Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: (46 commits)
mmc-omap: Clean up omap set_ios and make MMC_POWER_ON work
mmc-omap: Fix omap to use MMC_POWER_ON
mmc-omap: add missing '\n'
mmc: make tifm_sd_set_dma_data() static
mmc: remove old card states
mmc: support unsafe resume of cards
mmc: separate out reading EXT_CSD
mmc: break apart switch function
MMC: Fix handling of low-voltage cards
MMC: Consolidate voltage definitions
mmc: add bus handler
wbsd: check for data opcode earlier
mmc: Separate out protocol ops
mmc: Move core functions to subdir
mmc: deprecate mmc bus topology
mmc: remove card upon suspend
mmc: allow suspended block driver to be removed
mmc: Flush pending detects on host removal
mmc: Move host and card drivers to subdirs
mmc: Move queue functions to mmc_block
...
diff --git a/drivers/misc/tifm_7xx1.c b/drivers/misc/tifm_7xx1.c
index bc60e2f..1ba6c08 100644
--- a/drivers/misc/tifm_7xx1.c
+++ b/drivers/misc/tifm_7xx1.c
@@ -11,10 +11,20 @@
#include <linux/tifm.h>
#include <linux/dma-mapping.h>
-#include <linux/freezer.h>
#define DRIVER_NAME "tifm_7xx1"
-#define DRIVER_VERSION "0.7"
+#define DRIVER_VERSION "0.8"
+
+#define TIFM_IRQ_ENABLE 0x80000000
+#define TIFM_IRQ_SOCKMASK(x) (x)
+#define TIFM_IRQ_CARDMASK(x) ((x) << 8)
+#define TIFM_IRQ_FIFOMASK(x) ((x) << 16)
+#define TIFM_IRQ_SETALL 0xffffffff
+
+static void tifm_7xx1_dummy_eject(struct tifm_adapter *fm,
+ struct tifm_dev *sock)
+{
+}
static void tifm_7xx1_eject(struct tifm_adapter *fm, struct tifm_dev *sock)
{
@@ -22,7 +32,7 @@
spin_lock_irqsave(&fm->lock, flags);
fm->socket_change_set |= 1 << sock->socket_id;
- wake_up_all(&fm->change_set_notify);
+ tifm_queue_work(&fm->media_switcher);
spin_unlock_irqrestore(&fm->lock, flags);
}
@@ -30,8 +40,7 @@
{
struct tifm_adapter *fm = dev_id;
struct tifm_dev *sock;
- unsigned int irq_status;
- unsigned int sock_irq_status, cnt;
+ unsigned int irq_status, cnt;
spin_lock(&fm->lock);
irq_status = readl(fm->addr + FM_INTERRUPT_STATUS);
@@ -45,12 +54,12 @@
for (cnt = 0; cnt < fm->num_sockets; cnt++) {
sock = fm->sockets[cnt];
- sock_irq_status = (irq_status >> cnt)
- & (TIFM_IRQ_FIFOMASK(1)
- | TIFM_IRQ_CARDMASK(1));
-
- if (sock && sock_irq_status)
- sock->signal_irq(sock, sock_irq_status);
+ if (sock) {
+ if ((irq_status >> cnt) & TIFM_IRQ_FIFOMASK(1))
+ sock->data_event(sock);
+ if ((irq_status >> cnt) & TIFM_IRQ_CARDMASK(1))
+ sock->card_event(sock);
+ }
}
fm->socket_change_set |= irq_status
@@ -58,57 +67,57 @@
}
writel(irq_status, fm->addr + FM_INTERRUPT_STATUS);
- if (!fm->socket_change_set)
+ if (fm->finish_me)
+ complete_all(fm->finish_me);
+ else if (!fm->socket_change_set)
writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE);
else
- wake_up_all(&fm->change_set_notify);
+ tifm_queue_work(&fm->media_switcher);
spin_unlock(&fm->lock);
return IRQ_HANDLED;
}
-static tifm_media_id tifm_7xx1_toggle_sock_power(char __iomem *sock_addr,
- int is_x2)
+static unsigned char tifm_7xx1_toggle_sock_power(char __iomem *sock_addr)
{
unsigned int s_state;
int cnt;
writel(0x0e00, sock_addr + SOCK_CONTROL);
- for (cnt = 0; cnt < 100; cnt++) {
+ for (cnt = 16; cnt <= 256; cnt <<= 1) {
if (!(TIFM_SOCK_STATE_POWERED
& readl(sock_addr + SOCK_PRESENT_STATE)))
break;
- msleep(10);
+
+ msleep(cnt);
}
s_state = readl(sock_addr + SOCK_PRESENT_STATE);
if (!(TIFM_SOCK_STATE_OCCUPIED & s_state))
- return FM_NULL;
+ return 0;
- if (is_x2) {
- writel((s_state & 7) | 0x0c00, sock_addr + SOCK_CONTROL);
- } else {
- // SmartMedia cards need extra 40 msec
- if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7) == 1)
- msleep(40);
- writel(readl(sock_addr + SOCK_CONTROL) | TIFM_CTRL_LED,
- sock_addr + SOCK_CONTROL);
- msleep(10);
- writel((s_state & 0x7) | 0x0c00 | TIFM_CTRL_LED,
- sock_addr + SOCK_CONTROL);
- }
+ writel(readl(sock_addr + SOCK_CONTROL) | TIFM_CTRL_LED,
+ sock_addr + SOCK_CONTROL);
- for (cnt = 0; cnt < 100; cnt++) {
+ /* xd needs some extra time before power on */
+ if (((readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7)
+ == TIFM_TYPE_XD)
+ msleep(40);
+
+ writel((s_state & 7) | 0x0c00, sock_addr + SOCK_CONTROL);
+ /* wait for power to stabilize */
+ msleep(20);
+ for (cnt = 16; cnt <= 256; cnt <<= 1) {
if ((TIFM_SOCK_STATE_POWERED
& readl(sock_addr + SOCK_PRESENT_STATE)))
break;
- msleep(10);
+
+ msleep(cnt);
}
- if (!is_x2)
- writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED),
- sock_addr + SOCK_CONTROL);
+ writel(readl(sock_addr + SOCK_CONTROL) & (~TIFM_CTRL_LED),
+ sock_addr + SOCK_CONTROL);
return (readl(sock_addr + SOCK_PRESENT_STATE) >> 4) & 7;
}
@@ -119,127 +128,77 @@
return base_addr + ((sock_num + 1) << 10);
}
-static int tifm_7xx1_switch_media(void *data)
+static void tifm_7xx1_switch_media(struct work_struct *work)
{
- struct tifm_adapter *fm = data;
- unsigned long flags;
- tifm_media_id media_id;
- char *card_name = "xx";
- int cnt, rc;
+ struct tifm_adapter *fm = container_of(work, struct tifm_adapter,
+ media_switcher);
struct tifm_dev *sock;
- unsigned int socket_change_set;
+ unsigned long flags;
+ unsigned char media_id;
+ unsigned int socket_change_set, cnt;
- while (1) {
- rc = wait_event_interruptible(fm->change_set_notify,
- fm->socket_change_set);
- if (rc == -ERESTARTSYS)
- try_to_freeze();
+ spin_lock_irqsave(&fm->lock, flags);
+ socket_change_set = fm->socket_change_set;
+ fm->socket_change_set = 0;
- spin_lock_irqsave(&fm->lock, flags);
- socket_change_set = fm->socket_change_set;
- fm->socket_change_set = 0;
+ dev_dbg(fm->cdev.dev, "checking media set %x\n",
+ socket_change_set);
- dev_dbg(fm->dev, "checking media set %x\n",
- socket_change_set);
+ if (!socket_change_set) {
+ spin_unlock_irqrestore(&fm->lock, flags);
+ return;
+ }
- if (kthread_should_stop())
- socket_change_set = (1 << fm->num_sockets) - 1;
+ for (cnt = 0; cnt < fm->num_sockets; cnt++) {
+ if (!(socket_change_set & (1 << cnt)))
+ continue;
+ sock = fm->sockets[cnt];
+ if (sock) {
+ printk(KERN_INFO
+ "%s : demand removing card from socket %u:%u\n",
+ fm->cdev.class_id, fm->id, cnt);
+ fm->sockets[cnt] = NULL;
+ spin_unlock_irqrestore(&fm->lock, flags);
+ device_unregister(&sock->dev);
+ spin_lock_irqsave(&fm->lock, flags);
+ writel(0x0e00, tifm_7xx1_sock_addr(fm->addr, cnt)
+ + SOCK_CONTROL);
+ }
+
spin_unlock_irqrestore(&fm->lock, flags);
- if (!socket_change_set)
- continue;
+ media_id = tifm_7xx1_toggle_sock_power(
+ tifm_7xx1_sock_addr(fm->addr, cnt));
- spin_lock_irqsave(&fm->lock, flags);
- for (cnt = 0; cnt < fm->num_sockets; cnt++) {
- if (!(socket_change_set & (1 << cnt)))
- continue;
- sock = fm->sockets[cnt];
- if (sock) {
- printk(KERN_INFO DRIVER_NAME
- ": demand removing card from socket %d\n",
- cnt);
- fm->sockets[cnt] = NULL;
- spin_unlock_irqrestore(&fm->lock, flags);
- device_unregister(&sock->dev);
+ // tifm_alloc_device will check if media_id is valid
+ sock = tifm_alloc_device(fm, cnt, media_id);
+ if (sock) {
+ sock->addr = tifm_7xx1_sock_addr(fm->addr, cnt);
+
+ if (!device_register(&sock->dev)) {
spin_lock_irqsave(&fm->lock, flags);
- writel(0x0e00,
- tifm_7xx1_sock_addr(fm->addr, cnt)
- + SOCK_CONTROL);
- }
- if (kthread_should_stop())
- continue;
-
- spin_unlock_irqrestore(&fm->lock, flags);
- media_id = tifm_7xx1_toggle_sock_power(
- tifm_7xx1_sock_addr(fm->addr, cnt),
- fm->num_sockets == 2);
- if (media_id) {
- sock = tifm_alloc_device(fm);
- if (sock) {
- sock->addr = tifm_7xx1_sock_addr(fm->addr,
- cnt);
- sock->media_id = media_id;
- sock->socket_id = cnt;
- switch (media_id) {
- case 1:
- card_name = "xd";
- break;
- case 2:
- card_name = "ms";
- break;
- case 3:
- card_name = "sd";
- break;
- default:
- tifm_free_device(&sock->dev);
- spin_lock_irqsave(&fm->lock, flags);
- continue;
- }
- snprintf(sock->dev.bus_id, BUS_ID_SIZE,
- "tifm_%s%u:%u", card_name,
- fm->id, cnt);
- printk(KERN_INFO DRIVER_NAME
- ": %s card detected in socket %d\n",
- card_name, cnt);
- if (!device_register(&sock->dev)) {
- spin_lock_irqsave(&fm->lock, flags);
- if (!fm->sockets[cnt]) {
- fm->sockets[cnt] = sock;
- sock = NULL;
- }
- spin_unlock_irqrestore(&fm->lock, flags);
- }
- if (sock)
- tifm_free_device(&sock->dev);
+ if (!fm->sockets[cnt]) {
+ fm->sockets[cnt] = sock;
+ sock = NULL;
}
- spin_lock_irqsave(&fm->lock, flags);
- }
- }
-
- if (!kthread_should_stop()) {
- writel(TIFM_IRQ_FIFOMASK(socket_change_set)
- | TIFM_IRQ_CARDMASK(socket_change_set),
- fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
- writel(TIFM_IRQ_FIFOMASK(socket_change_set)
- | TIFM_IRQ_CARDMASK(socket_change_set),
- fm->addr + FM_SET_INTERRUPT_ENABLE);
- writel(TIFM_IRQ_ENABLE,
- fm->addr + FM_SET_INTERRUPT_ENABLE);
- spin_unlock_irqrestore(&fm->lock, flags);
- } else {
- for (cnt = 0; cnt < fm->num_sockets; cnt++) {
- if (fm->sockets[cnt])
- fm->socket_change_set |= 1 << cnt;
- }
- if (!fm->socket_change_set) {
- spin_unlock_irqrestore(&fm->lock, flags);
- return 0;
- } else {
spin_unlock_irqrestore(&fm->lock, flags);
}
+ if (sock)
+ tifm_free_device(&sock->dev);
}
+ spin_lock_irqsave(&fm->lock, flags);
}
- return 0;
+
+ writel(TIFM_IRQ_FIFOMASK(socket_change_set)
+ | TIFM_IRQ_CARDMASK(socket_change_set),
+ fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
+
+ writel(TIFM_IRQ_FIFOMASK(socket_change_set)
+ | TIFM_IRQ_CARDMASK(socket_change_set),
+ fm->addr + FM_SET_INTERRUPT_ENABLE);
+
+ writel(TIFM_IRQ_ENABLE, fm->addr + FM_SET_INTERRUPT_ENABLE);
+ spin_unlock_irqrestore(&fm->lock, flags);
}
#ifdef CONFIG_PM
@@ -258,9 +217,11 @@
static int tifm_7xx1_resume(struct pci_dev *dev)
{
struct tifm_adapter *fm = pci_get_drvdata(dev);
- int cnt, rc;
+ int rc;
+ unsigned int good_sockets = 0, bad_sockets = 0;
unsigned long flags;
- tifm_media_id new_ids[fm->num_sockets];
+ unsigned char new_ids[fm->num_sockets];
+ DECLARE_COMPLETION_ONSTACK(finish_resume);
pci_set_power_state(dev, PCI_D0);
pci_restore_state(dev);
@@ -271,45 +232,49 @@
dev_dbg(&dev->dev, "resuming host\n");
- for (cnt = 0; cnt < fm->num_sockets; cnt++)
- new_ids[cnt] = tifm_7xx1_toggle_sock_power(
- tifm_7xx1_sock_addr(fm->addr, cnt),
- fm->num_sockets == 2);
+ for (rc = 0; rc < fm->num_sockets; rc++)
+ new_ids[rc] = tifm_7xx1_toggle_sock_power(
+ tifm_7xx1_sock_addr(fm->addr, rc));
spin_lock_irqsave(&fm->lock, flags);
- fm->socket_change_set = 0;
- for (cnt = 0; cnt < fm->num_sockets; cnt++) {
- if (fm->sockets[cnt]) {
- if (fm->sockets[cnt]->media_id == new_ids[cnt])
- fm->socket_change_set |= 1 << cnt;
-
- fm->sockets[cnt]->media_id = new_ids[cnt];
+ for (rc = 0; rc < fm->num_sockets; rc++) {
+ if (fm->sockets[rc]) {
+ if (fm->sockets[rc]->type == new_ids[rc])
+ good_sockets |= 1 << rc;
+ else
+ bad_sockets |= 1 << rc;
}
}
writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
fm->addr + FM_SET_INTERRUPT_ENABLE);
- if (!fm->socket_change_set) {
+ dev_dbg(&dev->dev, "change sets on resume: good %x, bad %x\n",
+ good_sockets, bad_sockets);
+
+ fm->socket_change_set = 0;
+ if (good_sockets) {
+ fm->finish_me = &finish_resume;
spin_unlock_irqrestore(&fm->lock, flags);
- return 0;
- } else {
- fm->socket_change_set = 0;
- spin_unlock_irqrestore(&fm->lock, flags);
+ rc = wait_for_completion_timeout(&finish_resume, HZ);
+ dev_dbg(&dev->dev, "wait returned %d\n", rc);
+ writel(TIFM_IRQ_FIFOMASK(good_sockets)
+ | TIFM_IRQ_CARDMASK(good_sockets),
+ fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
+ writel(TIFM_IRQ_FIFOMASK(good_sockets)
+ | TIFM_IRQ_CARDMASK(good_sockets),
+ fm->addr + FM_SET_INTERRUPT_ENABLE);
+ spin_lock_irqsave(&fm->lock, flags);
+ fm->finish_me = NULL;
+ fm->socket_change_set ^= good_sockets & fm->socket_change_set;
}
- wait_event_timeout(fm->change_set_notify, fm->socket_change_set, HZ);
-
- spin_lock_irqsave(&fm->lock, flags);
- writel(TIFM_IRQ_FIFOMASK(fm->socket_change_set)
- | TIFM_IRQ_CARDMASK(fm->socket_change_set),
- fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
- writel(TIFM_IRQ_FIFOMASK(fm->socket_change_set)
- | TIFM_IRQ_CARDMASK(fm->socket_change_set),
- fm->addr + FM_SET_INTERRUPT_ENABLE);
- writel(TIFM_IRQ_ENABLE,
- fm->addr + FM_SET_INTERRUPT_ENABLE);
- fm->socket_change_set = 0;
+ fm->socket_change_set |= bad_sockets;
+ if (fm->socket_change_set)
+ tifm_queue_work(&fm->media_switcher);
spin_unlock_irqrestore(&fm->lock, flags);
+ writel(TIFM_IRQ_ENABLE,
+ fm->addr + FM_SET_INTERRUPT_ENABLE);
+
return 0;
}
@@ -345,20 +310,14 @@
pci_intx(dev, 1);
- fm = tifm_alloc_adapter();
+ fm = tifm_alloc_adapter(dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM
+ ? 4 : 2, &dev->dev);
if (!fm) {
rc = -ENOMEM;
goto err_out_int;
}
- fm->dev = &dev->dev;
- fm->num_sockets = (dev->device == PCI_DEVICE_ID_TI_XX21_XX11_FM)
- ? 4 : 2;
- fm->sockets = kzalloc(sizeof(struct tifm_dev*) * fm->num_sockets,
- GFP_KERNEL);
- if (!fm->sockets)
- goto err_out_free;
-
+ INIT_WORK(&fm->media_switcher, tifm_7xx1_switch_media);
fm->eject = tifm_7xx1_eject;
pci_set_drvdata(dev, fm);
@@ -367,19 +326,16 @@
if (!fm->addr)
goto err_out_free;
- rc = request_irq(dev->irq, tifm_7xx1_isr, IRQF_SHARED, DRIVER_NAME, fm);
+ rc = request_irq(dev->irq, tifm_7xx1_isr, SA_SHIRQ, DRIVER_NAME, fm);
if (rc)
goto err_out_unmap;
- init_waitqueue_head(&fm->change_set_notify);
- rc = tifm_add_adapter(fm, tifm_7xx1_switch_media);
+ rc = tifm_add_adapter(fm);
if (rc)
goto err_out_irq;
- writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
writel(TIFM_IRQ_ENABLE | TIFM_IRQ_SOCKMASK((1 << fm->num_sockets) - 1),
fm->addr + FM_SET_INTERRUPT_ENABLE);
- wake_up_process(fm->media_switcher);
return 0;
err_out_irq:
@@ -401,18 +357,12 @@
static void tifm_7xx1_remove(struct pci_dev *dev)
{
struct tifm_adapter *fm = pci_get_drvdata(dev);
- unsigned long flags;
+ fm->eject = tifm_7xx1_dummy_eject;
writel(TIFM_IRQ_SETALL, fm->addr + FM_CLEAR_INTERRUPT_ENABLE);
mmiowb();
free_irq(dev->irq, fm);
- spin_lock_irqsave(&fm->lock, flags);
- fm->socket_change_set = (1 << fm->num_sockets) - 1;
- spin_unlock_irqrestore(&fm->lock, flags);
-
- kthread_stop(fm->media_switcher);
-
tifm_remove_adapter(fm);
pci_set_drvdata(dev, NULL);
diff --git a/drivers/misc/tifm_core.c b/drivers/misc/tifm_core.c
index 6b10ebe..d195fb0 100644
--- a/drivers/misc/tifm_core.c
+++ b/drivers/misc/tifm_core.c
@@ -14,71 +14,124 @@
#include <linux/idr.h>
#define DRIVER_NAME "tifm_core"
-#define DRIVER_VERSION "0.7"
+#define DRIVER_VERSION "0.8"
+static struct workqueue_struct *workqueue;
static DEFINE_IDR(tifm_adapter_idr);
static DEFINE_SPINLOCK(tifm_adapter_lock);
-static tifm_media_id *tifm_device_match(tifm_media_id *ids,
- struct tifm_dev *dev)
+static const char *tifm_media_type_name(unsigned char type, unsigned char nt)
{
- while (*ids) {
- if (dev->media_id == *ids)
- return ids;
- ids++;
- }
- return NULL;
+ const char *card_type_name[3][3] = {
+ { "SmartMedia/xD", "MemoryStick", "MMC/SD" },
+ { "XD", "MS", "SD"},
+ { "xd", "ms", "sd"}
+ };
+
+ if (nt > 2 || type < 1 || type > 3)
+ return NULL;
+ return card_type_name[nt][type - 1];
}
-static int tifm_match(struct device *dev, struct device_driver *drv)
+static int tifm_dev_match(struct tifm_dev *sock, struct tifm_device_id *id)
{
- struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
- struct tifm_driver *fm_drv;
-
- fm_drv = container_of(drv, struct tifm_driver, driver);
- if (!fm_drv->id_table)
- return -EINVAL;
- if (tifm_device_match(fm_drv->id_table, fm_dev))
+ if (sock->type == id->type)
return 1;
- return -ENODEV;
+ return 0;
+}
+
+static int tifm_bus_match(struct device *dev, struct device_driver *drv)
+{
+ struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
+ struct tifm_driver *fm_drv = container_of(drv, struct tifm_driver,
+ driver);
+ struct tifm_device_id *ids = fm_drv->id_table;
+
+ if (ids) {
+ while (ids->type) {
+ if (tifm_dev_match(sock, ids))
+ return 1;
+ ++ids;
+ }
+ }
+ return 0;
}
static int tifm_uevent(struct device *dev, char **envp, int num_envp,
char *buffer, int buffer_size)
{
- struct tifm_dev *fm_dev;
+ struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
int i = 0;
int length = 0;
- const char *card_type_name[] = {"INV", "SM", "MS", "SD"};
- if (!dev || !(fm_dev = container_of(dev, struct tifm_dev, dev)))
- return -ENODEV;
if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
- "TIFM_CARD_TYPE=%s", card_type_name[fm_dev->media_id]))
+ "TIFM_CARD_TYPE=%s",
+ tifm_media_type_name(sock->type, 1)))
return -ENOMEM;
return 0;
}
+static int tifm_device_probe(struct device *dev)
+{
+ struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
+ struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
+ driver);
+ int rc = -ENODEV;
+
+ get_device(dev);
+ if (dev->driver && drv->probe) {
+ rc = drv->probe(sock);
+ if (!rc)
+ return 0;
+ }
+ put_device(dev);
+ return rc;
+}
+
+static void tifm_dummy_event(struct tifm_dev *sock)
+{
+ return;
+}
+
+static int tifm_device_remove(struct device *dev)
+{
+ struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
+ struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
+ driver);
+
+ if (dev->driver && drv->remove) {
+ sock->card_event = tifm_dummy_event;
+ sock->data_event = tifm_dummy_event;
+ drv->remove(sock);
+ sock->dev.driver = NULL;
+ }
+
+ put_device(dev);
+ return 0;
+}
+
#ifdef CONFIG_PM
static int tifm_device_suspend(struct device *dev, pm_message_t state)
{
- struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
- struct tifm_driver *drv = fm_dev->drv;
+ struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
+ struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
+ driver);
- if (drv && drv->suspend)
- return drv->suspend(fm_dev, state);
+ if (dev->driver && drv->suspend)
+ return drv->suspend(sock, state);
return 0;
}
static int tifm_device_resume(struct device *dev)
{
- struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
- struct tifm_driver *drv = fm_dev->drv;
+ struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
+ struct tifm_driver *drv = container_of(dev->driver, struct tifm_driver,
+ driver);
- if (drv && drv->resume)
- return drv->resume(fm_dev);
+ if (dev->driver && drv->resume)
+ return drv->resume(sock);
return 0;
}
@@ -89,19 +142,33 @@
#endif /* CONFIG_PM */
+static ssize_t type_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
+ return sprintf(buf, "%x", sock->type);
+}
+
+static struct device_attribute tifm_dev_attrs[] = {
+ __ATTR(type, S_IRUGO, type_show, NULL),
+ __ATTR_NULL
+};
+
static struct bus_type tifm_bus_type = {
- .name = "tifm",
- .match = tifm_match,
- .uevent = tifm_uevent,
- .suspend = tifm_device_suspend,
- .resume = tifm_device_resume
+ .name = "tifm",
+ .dev_attrs = tifm_dev_attrs,
+ .match = tifm_bus_match,
+ .uevent = tifm_uevent,
+ .probe = tifm_device_probe,
+ .remove = tifm_device_remove,
+ .suspend = tifm_device_suspend,
+ .resume = tifm_device_resume
};
static void tifm_free(struct class_device *cdev)
{
struct tifm_adapter *fm = container_of(cdev, struct tifm_adapter, cdev);
- kfree(fm->sockets);
kfree(fm);
}
@@ -110,28 +177,25 @@
.release = tifm_free
};
-struct tifm_adapter *tifm_alloc_adapter(void)
+struct tifm_adapter *tifm_alloc_adapter(unsigned int num_sockets,
+ struct device *dev)
{
struct tifm_adapter *fm;
- fm = kzalloc(sizeof(struct tifm_adapter), GFP_KERNEL);
+ fm = kzalloc(sizeof(struct tifm_adapter)
+ + sizeof(struct tifm_dev*) * num_sockets, GFP_KERNEL);
if (fm) {
fm->cdev.class = &tifm_adapter_class;
- spin_lock_init(&fm->lock);
+ fm->cdev.dev = dev;
class_device_initialize(&fm->cdev);
+ spin_lock_init(&fm->lock);
+ fm->num_sockets = num_sockets;
}
return fm;
}
EXPORT_SYMBOL(tifm_alloc_adapter);
-void tifm_free_adapter(struct tifm_adapter *fm)
-{
- class_device_put(&fm->cdev);
-}
-EXPORT_SYMBOL(tifm_free_adapter);
-
-int tifm_add_adapter(struct tifm_adapter *fm,
- int (*mediathreadfn)(void *data))
+int tifm_add_adapter(struct tifm_adapter *fm)
{
int rc;
@@ -141,59 +205,80 @@
spin_lock(&tifm_adapter_lock);
rc = idr_get_new(&tifm_adapter_idr, fm, &fm->id);
spin_unlock(&tifm_adapter_lock);
- if (!rc) {
- snprintf(fm->cdev.class_id, BUS_ID_SIZE, "tifm%u", fm->id);
- fm->media_switcher = kthread_create(mediathreadfn,
- fm, "tifm/%u", fm->id);
+ if (rc)
+ return rc;
- if (!IS_ERR(fm->media_switcher))
- return class_device_add(&fm->cdev);
-
+ snprintf(fm->cdev.class_id, BUS_ID_SIZE, "tifm%u", fm->id);
+ rc = class_device_add(&fm->cdev);
+ if (rc) {
spin_lock(&tifm_adapter_lock);
idr_remove(&tifm_adapter_idr, fm->id);
spin_unlock(&tifm_adapter_lock);
- rc = -ENOMEM;
}
+
return rc;
}
EXPORT_SYMBOL(tifm_add_adapter);
void tifm_remove_adapter(struct tifm_adapter *fm)
{
- class_device_del(&fm->cdev);
+ unsigned int cnt;
+
+ flush_workqueue(workqueue);
+ for (cnt = 0; cnt < fm->num_sockets; ++cnt) {
+ if (fm->sockets[cnt])
+ device_unregister(&fm->sockets[cnt]->dev);
+ }
spin_lock(&tifm_adapter_lock);
idr_remove(&tifm_adapter_idr, fm->id);
spin_unlock(&tifm_adapter_lock);
+ class_device_del(&fm->cdev);
}
EXPORT_SYMBOL(tifm_remove_adapter);
+void tifm_free_adapter(struct tifm_adapter *fm)
+{
+ class_device_put(&fm->cdev);
+}
+EXPORT_SYMBOL(tifm_free_adapter);
+
void tifm_free_device(struct device *dev)
{
- struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
- kfree(fm_dev);
+ struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev);
+ kfree(sock);
}
EXPORT_SYMBOL(tifm_free_device);
-static void tifm_dummy_signal_irq(struct tifm_dev *sock,
- unsigned int sock_irq_status)
+struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm, unsigned int id,
+ unsigned char type)
{
- return;
-}
+ struct tifm_dev *sock = NULL;
-struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm)
-{
- struct tifm_dev *dev = kzalloc(sizeof(struct tifm_dev), GFP_KERNEL);
+ if (!tifm_media_type_name(type, 0))
+ return sock;
- if (dev) {
- spin_lock_init(&dev->lock);
+ sock = kzalloc(sizeof(struct tifm_dev), GFP_KERNEL);
+ if (sock) {
+ spin_lock_init(&sock->lock);
+ sock->type = type;
+ sock->socket_id = id;
+ sock->card_event = tifm_dummy_event;
+ sock->data_event = tifm_dummy_event;
- dev->dev.parent = fm->dev;
- dev->dev.bus = &tifm_bus_type;
- dev->dev.release = tifm_free_device;
- dev->signal_irq = tifm_dummy_signal_irq;
+ sock->dev.parent = fm->cdev.dev;
+ sock->dev.bus = &tifm_bus_type;
+ sock->dev.dma_mask = fm->cdev.dev->dma_mask;
+ sock->dev.release = tifm_free_device;
+
+ snprintf(sock->dev.bus_id, BUS_ID_SIZE,
+ "tifm_%s%u:%u", tifm_media_type_name(type, 2),
+ fm->id, id);
+ printk(KERN_INFO DRIVER_NAME
+ ": %s card detected in socket %u:%u\n",
+ tifm_media_type_name(type, 0), fm->id, id);
}
- return dev;
+ return sock;
}
EXPORT_SYMBOL(tifm_alloc_device);
@@ -218,54 +303,15 @@
}
EXPORT_SYMBOL(tifm_unmap_sg);
-static int tifm_device_probe(struct device *dev)
+void tifm_queue_work(struct work_struct *work)
{
- struct tifm_driver *drv;
- struct tifm_dev *fm_dev;
- int rc = 0;
- const tifm_media_id *id;
-
- drv = container_of(dev->driver, struct tifm_driver, driver);
- fm_dev = container_of(dev, struct tifm_dev, dev);
- get_device(dev);
- if (!fm_dev->drv && drv->probe && drv->id_table) {
- rc = -ENODEV;
- id = tifm_device_match(drv->id_table, fm_dev);
- if (id)
- rc = drv->probe(fm_dev);
- if (rc >= 0) {
- rc = 0;
- fm_dev->drv = drv;
- }
- }
- if (rc)
- put_device(dev);
- return rc;
+ queue_work(workqueue, work);
}
-
-static int tifm_device_remove(struct device *dev)
-{
- struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
- struct tifm_driver *drv = fm_dev->drv;
-
- if (drv) {
- fm_dev->signal_irq = tifm_dummy_signal_irq;
- if (drv->remove)
- drv->remove(fm_dev);
- fm_dev->drv = NULL;
- }
-
- put_device(dev);
- return 0;
-}
+EXPORT_SYMBOL(tifm_queue_work);
int tifm_register_driver(struct tifm_driver *drv)
{
drv->driver.bus = &tifm_bus_type;
- drv->driver.probe = tifm_device_probe;
- drv->driver.remove = tifm_device_remove;
- drv->driver.suspend = tifm_device_suspend;
- drv->driver.resume = tifm_device_resume;
return driver_register(&drv->driver);
}
@@ -279,13 +325,25 @@
static int __init tifm_init(void)
{
- int rc = bus_register(&tifm_bus_type);
+ int rc;
- if (!rc) {
- rc = class_register(&tifm_adapter_class);
- if (rc)
- bus_unregister(&tifm_bus_type);
- }
+ workqueue = create_freezeable_workqueue("tifm");
+ if (!workqueue)
+ return -ENOMEM;
+
+ rc = bus_register(&tifm_bus_type);
+
+ if (rc)
+ goto err_out_wq;
+
+ rc = class_register(&tifm_adapter_class);
+ if (!rc)
+ return 0;
+
+ bus_unregister(&tifm_bus_type);
+
+err_out_wq:
+ destroy_workqueue(workqueue);
return rc;
}
@@ -294,6 +352,7 @@
{
class_unregister(&tifm_adapter_class);
bus_unregister(&tifm_bus_type);
+ destroy_workqueue(workqueue);
}
subsys_initcall(tifm_init);
diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig
index 12af9c7..6c97491 100644
--- a/drivers/mmc/Kconfig
+++ b/drivers/mmc/Kconfig
@@ -19,110 +19,10 @@
This is an option for use by developers; most people should
say N here. This enables MMC core and driver debugging.
-config MMC_BLOCK
- tristate "MMC block device driver"
- depends on MMC && BLOCK
- default y
- help
- Say Y here to enable the MMC block device driver support.
- This provides a block device driver, which you can use to
- mount the filesystem. Almost everyone wishing MMC support
- should say Y or M here.
+source "drivers/mmc/core/Kconfig"
-config MMC_ARMMMCI
- tristate "ARM AMBA Multimedia Card Interface support"
- depends on ARM_AMBA && MMC
- help
- This selects the ARM(R) AMBA(R) PrimeCell Multimedia Card
- Interface (PL180 and PL181) support. If you have an ARM(R)
- platform with a Multimedia Card slot, say Y or M here.
+source "drivers/mmc/card/Kconfig"
- If unsure, say N.
-
-config MMC_PXA
- tristate "Intel PXA25x/26x/27x Multimedia Card Interface support"
- depends on ARCH_PXA && MMC
- help
- This selects the Intel(R) PXA(R) Multimedia card Interface.
- If you have a PXA(R) platform with a Multimedia Card slot,
- say Y or M here.
-
- If unsure, say N.
-
-config MMC_SDHCI
- tristate "Secure Digital Host Controller Interface support (EXPERIMENTAL)"
- depends on PCI && MMC && EXPERIMENTAL
- help
- This select the generic Secure Digital Host Controller Interface.
- It is used by manufacturers such as Texas Instruments(R), Ricoh(R)
- and Toshiba(R). Most controllers found in laptops are of this type.
- If you have a controller with this interface, say Y or M here.
-
- If unsure, say N.
-
-config MMC_OMAP
- tristate "TI OMAP Multimedia Card Interface support"
- depends on ARCH_OMAP && MMC
- select TPS65010 if MACH_OMAP_H2
- help
- This selects the TI OMAP Multimedia card Interface.
- If you have an OMAP board with a Multimedia Card slot,
- say Y or M here.
-
- If unsure, say N.
-
-config MMC_WBSD
- tristate "Winbond W83L51xD SD/MMC Card Interface support"
- depends on MMC && ISA_DMA_API
- help
- This selects the Winbond(R) W83L51xD Secure digital and
- Multimedia card Interface.
- If you have a machine with a integrated W83L518D or W83L519D
- SD/MMC card reader, say Y or M here.
-
- If unsure, say N.
-
-config MMC_AU1X
- tristate "Alchemy AU1XX0 MMC Card Interface support"
- depends on MMC && SOC_AU1200
- help
- This selects the AMD Alchemy(R) Multimedia card interface.
- If you have a Alchemy platform with a MMC slot, say Y or M here.
-
- If unsure, say N.
-
-config MMC_AT91
- tristate "AT91 SD/MMC Card Interface support"
- depends on ARCH_AT91 && MMC
- help
- This selects the AT91 MCI controller.
-
- If unsure, say N.
-
-config MMC_IMX
- tristate "Motorola i.MX Multimedia Card Interface support"
- depends on ARCH_IMX && MMC
- help
- This selects the Motorola i.MX Multimedia card Interface.
- If you have a i.MX platform with a Multimedia Card slot,
- say Y or M here.
-
- If unsure, say N.
-
-config MMC_TIFM_SD
- tristate "TI Flash Media MMC/SD Interface support (EXPERIMENTAL)"
- depends on MMC && EXPERIMENTAL && PCI
- select TIFM_CORE
- help
- Say Y here if you want to be able to access MMC/SD cards with
- the Texas Instruments(R) Flash Media card reader, found in many
- laptops.
- This option 'selects' (turns on, enables) 'TIFM_CORE', but you
- probably also need appropriate card reader host adapter, such as
- 'Misc devices: TI Flash Media PCI74xx/PCI76xx host adapter support
- (TIFM_7XX1)'.
-
- To compile this driver as a module, choose M here: the
- module will be called tifm_sd.
+source "drivers/mmc/host/Kconfig"
endmenu
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index 83ffb93..9979f5e 100644
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -2,32 +2,11 @@
# Makefile for the kernel mmc device drivers.
#
-#
-# Core
-#
-obj-$(CONFIG_MMC) += mmc_core.o
-
-#
-# Media drivers
-#
-obj-$(CONFIG_MMC_BLOCK) += mmc_block.o
-
-#
-# Host drivers
-#
-obj-$(CONFIG_MMC_ARMMMCI) += mmci.o
-obj-$(CONFIG_MMC_PXA) += pxamci.o
-obj-$(CONFIG_MMC_IMX) += imxmmc.o
-obj-$(CONFIG_MMC_SDHCI) += sdhci.o
-obj-$(CONFIG_MMC_WBSD) += wbsd.o
-obj-$(CONFIG_MMC_AU1X) += au1xmmc.o
-obj-$(CONFIG_MMC_OMAP) += omap.o
-obj-$(CONFIG_MMC_AT91) += at91_mci.o
-obj-$(CONFIG_MMC_TIFM_SD) += tifm_sd.o
-
-mmc_core-y := mmc.o mmc_sysfs.o
-mmc_core-$(CONFIG_BLOCK) += mmc_queue.o
-
ifeq ($(CONFIG_MMC_DEBUG),y)
-EXTRA_CFLAGS += -DDEBUG
+ EXTRA_CFLAGS += -DDEBUG
endif
+
+obj-$(CONFIG_MMC) += core/
+obj-$(CONFIG_MMC) += card/
+obj-$(CONFIG_MMC) += host/
+
diff --git a/drivers/mmc/card/Kconfig b/drivers/mmc/card/Kconfig
new file mode 100644
index 0000000..01a9fd3
--- /dev/null
+++ b/drivers/mmc/card/Kconfig
@@ -0,0 +1,17 @@
+#
+# MMC/SD card drivers
+#
+
+comment "MMC/SD Card Drivers"
+ depends MMC
+
+config MMC_BLOCK
+ tristate "MMC block device driver"
+ depends on MMC && BLOCK
+ default y
+ help
+ Say Y here to enable the MMC block device driver support.
+ This provides a block device driver, which you can use to
+ mount the filesystem. Almost everyone wishing MMC support
+ should say Y or M here.
+
diff --git a/drivers/mmc/card/Makefile b/drivers/mmc/card/Makefile
new file mode 100644
index 0000000..cf8c939
--- /dev/null
+++ b/drivers/mmc/card/Makefile
@@ -0,0 +1,11 @@
+#
+# Makefile for MMC/SD card drivers
+#
+
+ifeq ($(CONFIG_MMC_DEBUG),y)
+ EXTRA_CFLAGS += -DDEBUG
+endif
+
+obj-$(CONFIG_MMC_BLOCK) += mmc_block.o
+mmc_block-objs := block.o queue.o
+
diff --git a/drivers/mmc/mmc_block.c b/drivers/mmc/card/block.c
similarity index 92%
rename from drivers/mmc/mmc_block.c
rename to drivers/mmc/card/block.c
index 86439a0..d24ab23 100644
--- a/drivers/mmc/mmc_block.c
+++ b/drivers/mmc/card/block.c
@@ -2,6 +2,7 @@
* Block driver for media (i.e., flash cards)
*
* Copyright 2002 Hewlett-Packard Company
+ * Copyright 2005-2007 Pierre Ossman
*
* Use consistent with the GNU GPL is permitted,
* provided that this copyright notice is
@@ -31,13 +32,13 @@
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
-#include <linux/mmc/protocol.h>
-#include <linux/mmc/host.h>
+#include <linux/mmc/mmc.h>
+#include <linux/mmc/sd.h>
#include <asm/system.h>
#include <asm/uaccess.h>
-#include "mmc_queue.h"
+#include "queue.h"
/*
* max 8 partitions per card
@@ -223,10 +224,9 @@
struct mmc_blk_data *md = mq->data;
struct mmc_card *card = md->queue.card;
struct mmc_blk_request brq;
- int ret = 1;
+ int ret = 1, sg_pos, data_size;
- if (mmc_card_claim_host(card))
- goto flush_queue;
+ mmc_claim_host(card->host);
do {
struct mmc_command cmd;
@@ -283,6 +283,20 @@
brq.data.sg = mq->sg;
brq.data.sg_len = blk_rq_map_sg(req->q, req, brq.data.sg);
+ if (brq.data.blocks !=
+ (req->nr_sectors >> (md->block_bits - 9))) {
+ data_size = brq.data.blocks * brq.data.blksz;
+ for (sg_pos = 0; sg_pos < brq.data.sg_len; sg_pos++) {
+ data_size -= mq->sg[sg_pos].length;
+ if (data_size <= 0) {
+ mq->sg[sg_pos].length += data_size;
+ sg_pos++;
+ break;
+ }
+ }
+ brq.data.sg_len = sg_pos;
+ }
+
mmc_wait_for_req(card->host, &brq.mrq);
if (brq.cmd.error) {
printk(KERN_ERR "%s: error %d sending read/write command\n",
@@ -342,7 +356,7 @@
spin_unlock_irq(&md->lock);
} while (ret);
- mmc_card_release_host(card);
+ mmc_release_host(card->host);
return 1;
@@ -378,9 +392,7 @@
spin_unlock_irq(&md->lock);
}
-flush_queue:
-
- mmc_card_release_host(card);
+ mmc_release_host(card->host);
spin_lock_irq(&md->lock);
while (ret) {
@@ -477,11 +489,20 @@
blk_queue_hardsect_size(md->queue.queue, 1 << md->block_bits);
- /*
- * The CSD capacity field is in units of read_blkbits.
- * set_capacity takes units of 512 bytes.
- */
- set_capacity(md->disk, card->csd.capacity << (card->csd.read_blkbits - 9));
+ if (!mmc_card_sd(card) && mmc_card_blockaddr(card)) {
+ /*
+ * The EXT_CSD sector count is in number or 512 byte
+ * sectors.
+ */
+ set_capacity(md->disk, card->ext_csd.sectors);
+ } else {
+ /*
+ * The CSD capacity field is in units of read_blkbits.
+ * set_capacity takes units of 512 bytes.
+ */
+ set_capacity(md->disk,
+ card->csd.capacity << (card->csd.read_blkbits - 9));
+ }
return md;
err_putdisk:
@@ -502,12 +523,12 @@
if (mmc_card_blockaddr(card))
return 0;
- mmc_card_claim_host(card);
+ mmc_claim_host(card->host);
cmd.opcode = MMC_SET_BLOCKLEN;
cmd.arg = 1 << md->block_bits;
cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
err = mmc_wait_for_cmd(card->host, &cmd, 5);
- mmc_card_release_host(card);
+ mmc_release_host(card->host);
if (err) {
printk(KERN_ERR "%s: unable to set block size to %d: %d\n",
diff --git a/drivers/mmc/mmc_queue.c b/drivers/mmc/card/queue.c
similarity index 96%
rename from drivers/mmc/mmc_queue.c
rename to drivers/mmc/card/queue.c
index c27e426..2e77963 100644
--- a/drivers/mmc/mmc_queue.c
+++ b/drivers/mmc/card/queue.c
@@ -1,7 +1,8 @@
/*
- * linux/drivers/mmc/mmc_queue.c
+ * linux/drivers/mmc/queue.c
*
* Copyright (C) 2003 Russell King, All Rights Reserved.
+ * Copyright 2006-2007 Pierre Ossman
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -14,7 +15,7 @@
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
-#include "mmc_queue.h"
+#include "queue.h"
#define MMC_QUEUE_SUSPENDED (1 << 0)
@@ -179,7 +180,6 @@
blk_cleanup_queue(mq->queue);
return ret;
}
-EXPORT_SYMBOL(mmc_init_queue);
void mmc_cleanup_queue(struct mmc_queue *mq)
{
@@ -191,6 +191,9 @@
q->queuedata = NULL;
spin_unlock_irqrestore(q->queue_lock, flags);
+ /* Make sure the queue isn't suspended, as that will deadlock */
+ mmc_queue_resume(mq);
+
/* Then terminate our worker thread */
kthread_stop(mq->thread);
@@ -226,7 +229,6 @@
down(&mq->thread_sem);
}
}
-EXPORT_SYMBOL(mmc_queue_suspend);
/**
* mmc_queue_resume - resume a previously suspended MMC request queue
@@ -247,4 +249,4 @@
spin_unlock_irqrestore(q->queue_lock, flags);
}
}
-EXPORT_SYMBOL(mmc_queue_resume);
+
diff --git a/drivers/mmc/mmc_queue.h b/drivers/mmc/card/queue.h
similarity index 100%
rename from drivers/mmc/mmc_queue.h
rename to drivers/mmc/card/queue.h
diff --git a/drivers/mmc/core/Kconfig b/drivers/mmc/core/Kconfig
new file mode 100644
index 0000000..94222b9
--- /dev/null
+++ b/drivers/mmc/core/Kconfig
@@ -0,0 +1,17 @@
+#
+# MMC core configuration
+#
+
+config MMC_UNSAFE_RESUME
+ bool "Allow unsafe resume (DANGEROUS)"
+ depends on MMC != n
+ help
+ If you say Y here, the MMC layer will assume that all cards
+ stayed in their respective slots during the suspend. The
+ normal behaviour is to remove them at suspend and
+ redetecting them at resume. Breaking this assumption will
+ in most cases result in data corruption.
+
+ This option is usually just for embedded systems which use
+ a MMC/SD card for rootfs. Most people should say N here.
+
diff --git a/drivers/mmc/core/Makefile b/drivers/mmc/core/Makefile
new file mode 100644
index 0000000..1075b02
--- /dev/null
+++ b/drivers/mmc/core/Makefile
@@ -0,0 +1,11 @@
+#
+# Makefile for the kernel mmc core.
+#
+
+ifeq ($(CONFIG_MMC_DEBUG),y)
+ EXTRA_CFLAGS += -DDEBUG
+endif
+
+obj-$(CONFIG_MMC) += mmc_core.o
+mmc_core-y := core.o sysfs.o mmc.o mmc_ops.o sd.o sd_ops.o
+
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
new file mode 100644
index 0000000..72c7cf4
--- /dev/null
+++ b/drivers/mmc/core/core.c
@@ -0,0 +1,727 @@
+/*
+ * linux/drivers/mmc/core/core.c
+ *
+ * Copyright (C) 2003-2004 Russell King, All Rights Reserved.
+ * SD support Copyright (C) 2004 Ian Molton, All Rights Reserved.
+ * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
+ * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/completion.h>
+#include <linux/device.h>
+#include <linux/delay.h>
+#include <linux/pagemap.h>
+#include <linux/err.h>
+#include <asm/scatterlist.h>
+#include <linux/scatterlist.h>
+
+#include <linux/mmc/card.h>
+#include <linux/mmc/host.h>
+#include <linux/mmc/mmc.h>
+#include <linux/mmc/sd.h>
+
+#include "core.h"
+#include "sysfs.h"
+
+#include "mmc_ops.h"
+#include "sd_ops.h"
+
+extern int mmc_attach_mmc(struct mmc_host *host, u32 ocr);
+extern int mmc_attach_sd(struct mmc_host *host, u32 ocr);
+
+/**
+ * mmc_request_done - finish processing an MMC request
+ * @host: MMC host which completed request
+ * @mrq: MMC request which request
+ *
+ * MMC drivers should call this function when they have completed
+ * their processing of a request.
+ */
+void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
+{
+ struct mmc_command *cmd = mrq->cmd;
+ int err = cmd->error;
+
+ pr_debug("%s: req done (CMD%u): %d/%d/%d: %08x %08x %08x %08x\n",
+ mmc_hostname(host), cmd->opcode, err,
+ mrq->data ? mrq->data->error : 0,
+ mrq->stop ? mrq->stop->error : 0,
+ cmd->resp[0], cmd->resp[1], cmd->resp[2], cmd->resp[3]);
+
+ if (err && cmd->retries) {
+ cmd->retries--;
+ cmd->error = 0;
+ host->ops->request(host, mrq);
+ } else if (mrq->done) {
+ mrq->done(mrq);
+ }
+}
+
+EXPORT_SYMBOL(mmc_request_done);
+
+/**
+ * mmc_start_request - start a command on a host
+ * @host: MMC host to start command on
+ * @mrq: MMC request to start
+ *
+ * Queue a command on the specified host. We expect the
+ * caller to be holding the host lock with interrupts disabled.
+ */
+void
+mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
+{
+#ifdef CONFIG_MMC_DEBUG
+ unsigned int i, sz;
+#endif
+
+ pr_debug("%s: starting CMD%u arg %08x flags %08x\n",
+ mmc_hostname(host), mrq->cmd->opcode,
+ mrq->cmd->arg, mrq->cmd->flags);
+
+ WARN_ON(!host->claimed);
+
+ mrq->cmd->error = 0;
+ mrq->cmd->mrq = mrq;
+ if (mrq->data) {
+ BUG_ON(mrq->data->blksz > host->max_blk_size);
+ BUG_ON(mrq->data->blocks > host->max_blk_count);
+ BUG_ON(mrq->data->blocks * mrq->data->blksz >
+ host->max_req_size);
+
+#ifdef CONFIG_MMC_DEBUG
+ sz = 0;
+ for (i = 0;i < mrq->data->sg_len;i++)
+ sz += mrq->data->sg[i].length;
+ BUG_ON(sz != mrq->data->blocks * mrq->data->blksz);
+#endif
+
+ mrq->cmd->data = mrq->data;
+ mrq->data->error = 0;
+ mrq->data->mrq = mrq;
+ if (mrq->stop) {
+ mrq->data->stop = mrq->stop;
+ mrq->stop->error = 0;
+ mrq->stop->mrq = mrq;
+ }
+ }
+ host->ops->request(host, mrq);
+}
+
+EXPORT_SYMBOL(mmc_start_request);
+
+static void mmc_wait_done(struct mmc_request *mrq)
+{
+ complete(mrq->done_data);
+}
+
+int mmc_wait_for_req(struct mmc_host *host, struct mmc_request *mrq)
+{
+ DECLARE_COMPLETION_ONSTACK(complete);
+
+ mrq->done_data = &complete;
+ mrq->done = mmc_wait_done;
+
+ mmc_start_request(host, mrq);
+
+ wait_for_completion(&complete);
+
+ return 0;
+}
+
+EXPORT_SYMBOL(mmc_wait_for_req);
+
+/**
+ * mmc_wait_for_cmd - start a command and wait for completion
+ * @host: MMC host to start command
+ * @cmd: MMC command to start
+ * @retries: maximum number of retries
+ *
+ * Start a new MMC command for a host, and wait for the command
+ * to complete. Return any error that occurred while the command
+ * was executing. Do not attempt to parse the response.
+ */
+int mmc_wait_for_cmd(struct mmc_host *host, struct mmc_command *cmd, int retries)
+{
+ struct mmc_request mrq;
+
+ BUG_ON(!host->claimed);
+
+ memset(&mrq, 0, sizeof(struct mmc_request));
+
+ memset(cmd->resp, 0, sizeof(cmd->resp));
+ cmd->retries = retries;
+
+ mrq.cmd = cmd;
+ cmd->data = NULL;
+
+ mmc_wait_for_req(host, &mrq);
+
+ return cmd->error;
+}
+
+EXPORT_SYMBOL(mmc_wait_for_cmd);
+
+/**
+ * mmc_set_data_timeout - set the timeout for a data command
+ * @data: data phase for command
+ * @card: the MMC card associated with the data transfer
+ * @write: flag to differentiate reads from writes
+ */
+void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card,
+ int write)
+{
+ unsigned int mult;
+
+ /*
+ * SD cards use a 100 multiplier rather than 10
+ */
+ mult = mmc_card_sd(card) ? 100 : 10;
+
+ /*
+ * Scale up the multiplier (and therefore the timeout) by
+ * the r2w factor for writes.
+ */
+ if (write)
+ mult <<= card->csd.r2w_factor;
+
+ data->timeout_ns = card->csd.tacc_ns * mult;
+ data->timeout_clks = card->csd.tacc_clks * mult;
+
+ /*
+ * SD cards also have an upper limit on the timeout.
+ */
+ if (mmc_card_sd(card)) {
+ unsigned int timeout_us, limit_us;
+
+ timeout_us = data->timeout_ns / 1000;
+ timeout_us += data->timeout_clks * 1000 /
+ (card->host->ios.clock / 1000);
+
+ if (write)
+ limit_us = 250000;
+ else
+ limit_us = 100000;
+
+ /*
+ * SDHC cards always use these fixed values.
+ */
+ if (timeout_us > limit_us || mmc_card_blockaddr(card)) {
+ data->timeout_ns = limit_us * 1000;
+ data->timeout_clks = 0;
+ }
+ }
+}
+EXPORT_SYMBOL(mmc_set_data_timeout);
+
+/**
+ * __mmc_claim_host - exclusively claim a host
+ * @host: mmc host to claim
+ * @card: mmc card to claim host for
+ *
+ * Claim a host for a set of operations. If a valid card
+ * is passed and this wasn't the last card selected, select
+ * the card before returning.
+ *
+ * Note: you should use mmc_card_claim_host or mmc_claim_host.
+ */
+void mmc_claim_host(struct mmc_host *host)
+{
+ DECLARE_WAITQUEUE(wait, current);
+ unsigned long flags;
+
+ add_wait_queue(&host->wq, &wait);
+ spin_lock_irqsave(&host->lock, flags);
+ while (1) {
+ set_current_state(TASK_UNINTERRUPTIBLE);
+ if (!host->claimed)
+ break;
+ spin_unlock_irqrestore(&host->lock, flags);
+ schedule();
+ spin_lock_irqsave(&host->lock, flags);
+ }
+ set_current_state(TASK_RUNNING);
+ host->claimed = 1;
+ spin_unlock_irqrestore(&host->lock, flags);
+ remove_wait_queue(&host->wq, &wait);
+}
+
+EXPORT_SYMBOL(mmc_claim_host);
+
+/**
+ * mmc_release_host - release a host
+ * @host: mmc host to release
+ *
+ * Release a MMC host, allowing others to claim the host
+ * for their operations.
+ */
+void mmc_release_host(struct mmc_host *host)
+{
+ unsigned long flags;
+
+ BUG_ON(!host->claimed);
+
+ spin_lock_irqsave(&host->lock, flags);
+ host->claimed = 0;
+ spin_unlock_irqrestore(&host->lock, flags);
+
+ wake_up(&host->wq);
+}
+
+EXPORT_SYMBOL(mmc_release_host);
+
+/*
+ * Internal function that does the actual ios call to the host driver,
+ * optionally printing some debug output.
+ */
+static inline void mmc_set_ios(struct mmc_host *host)
+{
+ struct mmc_ios *ios = &host->ios;
+
+ pr_debug("%s: clock %uHz busmode %u powermode %u cs %u Vdd %u "
+ "width %u timing %u\n",
+ mmc_hostname(host), ios->clock, ios->bus_mode,
+ ios->power_mode, ios->chip_select, ios->vdd,
+ ios->bus_width, ios->timing);
+
+ host->ops->set_ios(host, ios);
+}
+
+/*
+ * Control chip select pin on a host.
+ */
+void mmc_set_chip_select(struct mmc_host *host, int mode)
+{
+ host->ios.chip_select = mode;
+ mmc_set_ios(host);
+}
+
+/*
+ * Sets the host clock to the highest possible frequency that
+ * is below "hz".
+ */
+void mmc_set_clock(struct mmc_host *host, unsigned int hz)
+{
+ WARN_ON(hz < host->f_min);
+
+ if (hz > host->f_max)
+ hz = host->f_max;
+
+ host->ios.clock = hz;
+ mmc_set_ios(host);
+}
+
+/*
+ * Change the bus mode (open drain/push-pull) of a host.
+ */
+void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode)
+{
+ host->ios.bus_mode = mode;
+ mmc_set_ios(host);
+}
+
+/*
+ * Change data bus width of a host.
+ */
+void mmc_set_bus_width(struct mmc_host *host, unsigned int width)
+{
+ host->ios.bus_width = width;
+ mmc_set_ios(host);
+}
+
+/*
+ * Mask off any voltages we don't support and select
+ * the lowest voltage
+ */
+u32 mmc_select_voltage(struct mmc_host *host, u32 ocr)
+{
+ int bit;
+
+ ocr &= host->ocr_avail;
+
+ bit = ffs(ocr);
+ if (bit) {
+ bit -= 1;
+
+ ocr &= 3 << bit;
+
+ host->ios.vdd = bit;
+ mmc_set_ios(host);
+ } else {
+ ocr = 0;
+ }
+
+ return ocr;
+}
+
+/*
+ * Select timing parameters for host.
+ */
+void mmc_set_timing(struct mmc_host *host, unsigned int timing)
+{
+ host->ios.timing = timing;
+ mmc_set_ios(host);
+}
+
+/*
+ * Allocate a new MMC card
+ */
+struct mmc_card *mmc_alloc_card(struct mmc_host *host)
+{
+ struct mmc_card *card;
+
+ card = kmalloc(sizeof(struct mmc_card), GFP_KERNEL);
+ if (!card)
+ return ERR_PTR(-ENOMEM);
+
+ mmc_init_card(card, host);
+
+ return card;
+}
+
+/*
+ * Apply power to the MMC stack. This is a two-stage process.
+ * First, we enable power to the card without the clock running.
+ * We then wait a bit for the power to stabilise. Finally,
+ * enable the bus drivers and clock to the card.
+ *
+ * We must _NOT_ enable the clock prior to power stablising.
+ *
+ * If a host does all the power sequencing itself, ignore the
+ * initial MMC_POWER_UP stage.
+ */
+static void mmc_power_up(struct mmc_host *host)
+{
+ int bit = fls(host->ocr_avail) - 1;
+
+ host->ios.vdd = bit;
+ host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
+ host->ios.chip_select = MMC_CS_DONTCARE;
+ host->ios.power_mode = MMC_POWER_UP;
+ host->ios.bus_width = MMC_BUS_WIDTH_1;
+ host->ios.timing = MMC_TIMING_LEGACY;
+ mmc_set_ios(host);
+
+ mmc_delay(1);
+
+ host->ios.clock = host->f_min;
+ host->ios.power_mode = MMC_POWER_ON;
+ mmc_set_ios(host);
+
+ mmc_delay(2);
+}
+
+static void mmc_power_off(struct mmc_host *host)
+{
+ host->ios.clock = 0;
+ host->ios.vdd = 0;
+ host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
+ host->ios.chip_select = MMC_CS_DONTCARE;
+ host->ios.power_mode = MMC_POWER_OFF;
+ host->ios.bus_width = MMC_BUS_WIDTH_1;
+ host->ios.timing = MMC_TIMING_LEGACY;
+ mmc_set_ios(host);
+}
+
+/*
+ * Assign a mmc bus handler to a host. Only one bus handler may control a
+ * host at any given time.
+ */
+void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops)
+{
+ unsigned long flags;
+
+ BUG_ON(!host);
+ BUG_ON(!ops);
+
+ BUG_ON(!host->claimed);
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ BUG_ON(host->bus_ops);
+ BUG_ON(host->bus_refs);
+
+ host->bus_ops = ops;
+ host->bus_refs = 1;
+ host->bus_dead = 0;
+
+ spin_unlock_irqrestore(&host->lock, flags);
+}
+
+/*
+ * Remove the current bus handler from a host. Assumes that there are
+ * no interesting cards left, so the bus is powered down.
+ */
+void mmc_detach_bus(struct mmc_host *host)
+{
+ unsigned long flags;
+
+ BUG_ON(!host);
+
+ BUG_ON(!host->claimed);
+ BUG_ON(!host->bus_ops);
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ host->bus_dead = 1;
+
+ spin_unlock_irqrestore(&host->lock, flags);
+
+ mmc_power_off(host);
+
+ mmc_bus_put(host);
+}
+
+/*
+ * Cleanup when the last reference to the bus operator is dropped.
+ */
+void __mmc_release_bus(struct mmc_host *host)
+{
+ BUG_ON(!host);
+ BUG_ON(host->bus_refs);
+ BUG_ON(!host->bus_dead);
+
+ host->bus_ops = NULL;
+}
+
+/**
+ * mmc_detect_change - process change of state on a MMC socket
+ * @host: host which changed state.
+ * @delay: optional delay to wait before detection (jiffies)
+ *
+ * All we know is that card(s) have been inserted or removed
+ * from the socket(s). We don't know which socket or cards.
+ */
+void mmc_detect_change(struct mmc_host *host, unsigned long delay)
+{
+#ifdef CONFIG_MMC_DEBUG
+ mmc_claim_host(host);
+ BUG_ON(host->removed);
+ mmc_release_host(host);
+#endif
+
+ mmc_schedule_delayed_work(&host->detect, delay);
+}
+
+EXPORT_SYMBOL(mmc_detect_change);
+
+
+static void mmc_rescan(struct work_struct *work)
+{
+ struct mmc_host *host =
+ container_of(work, struct mmc_host, detect.work);
+ u32 ocr;
+ int err;
+
+ mmc_bus_get(host);
+
+ if (host->bus_ops == NULL) {
+ /*
+ * Only we can add a new handler, so it's safe to
+ * release the lock here.
+ */
+ mmc_bus_put(host);
+
+ mmc_claim_host(host);
+
+ mmc_power_up(host);
+ mmc_go_idle(host);
+
+ mmc_send_if_cond(host, host->ocr_avail);
+
+ err = mmc_send_app_op_cond(host, 0, &ocr);
+ if (err == MMC_ERR_NONE) {
+ if (mmc_attach_sd(host, ocr))
+ mmc_power_off(host);
+ } else {
+ /*
+ * If we fail to detect any SD cards then try
+ * searching for MMC cards.
+ */
+ err = mmc_send_op_cond(host, 0, &ocr);
+ if (err == MMC_ERR_NONE) {
+ if (mmc_attach_mmc(host, ocr))
+ mmc_power_off(host);
+ } else {
+ mmc_power_off(host);
+ mmc_release_host(host);
+ }
+ }
+ } else {
+ if (host->bus_ops->detect && !host->bus_dead)
+ host->bus_ops->detect(host);
+
+ mmc_bus_put(host);
+ }
+}
+
+
+/**
+ * mmc_alloc_host - initialise the per-host structure.
+ * @extra: sizeof private data structure
+ * @dev: pointer to host device model structure
+ *
+ * Initialise the per-host structure.
+ */
+struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
+{
+ struct mmc_host *host;
+
+ host = mmc_alloc_host_sysfs(extra, dev);
+ if (host) {
+ spin_lock_init(&host->lock);
+ init_waitqueue_head(&host->wq);
+ INIT_DELAYED_WORK(&host->detect, mmc_rescan);
+
+ /*
+ * By default, hosts do not support SGIO or large requests.
+ * They have to set these according to their abilities.
+ */
+ host->max_hw_segs = 1;
+ host->max_phys_segs = 1;
+ host->max_seg_size = PAGE_CACHE_SIZE;
+
+ host->max_req_size = PAGE_CACHE_SIZE;
+ host->max_blk_size = 512;
+ host->max_blk_count = PAGE_CACHE_SIZE / 512;
+ }
+
+ return host;
+}
+
+EXPORT_SYMBOL(mmc_alloc_host);
+
+/**
+ * mmc_add_host - initialise host hardware
+ * @host: mmc host
+ */
+int mmc_add_host(struct mmc_host *host)
+{
+ int ret;
+
+ ret = mmc_add_host_sysfs(host);
+ if (ret == 0) {
+ mmc_power_off(host);
+ mmc_detect_change(host, 0);
+ }
+
+ return ret;
+}
+
+EXPORT_SYMBOL(mmc_add_host);
+
+/**
+ * mmc_remove_host - remove host hardware
+ * @host: mmc host
+ *
+ * Unregister and remove all cards associated with this host,
+ * and power down the MMC bus.
+ */
+void mmc_remove_host(struct mmc_host *host)
+{
+#ifdef CONFIG_MMC_DEBUG
+ mmc_claim_host(host);
+ host->removed = 1;
+ mmc_release_host(host);
+#endif
+
+ mmc_flush_scheduled_work();
+
+ mmc_bus_get(host);
+ if (host->bus_ops && !host->bus_dead) {
+ if (host->bus_ops->remove)
+ host->bus_ops->remove(host);
+
+ mmc_claim_host(host);
+ mmc_detach_bus(host);
+ mmc_release_host(host);
+ }
+ mmc_bus_put(host);
+
+ BUG_ON(host->card);
+
+ mmc_power_off(host);
+ mmc_remove_host_sysfs(host);
+}
+
+EXPORT_SYMBOL(mmc_remove_host);
+
+/**
+ * mmc_free_host - free the host structure
+ * @host: mmc host
+ *
+ * Free the host once all references to it have been dropped.
+ */
+void mmc_free_host(struct mmc_host *host)
+{
+ mmc_free_host_sysfs(host);
+}
+
+EXPORT_SYMBOL(mmc_free_host);
+
+#ifdef CONFIG_PM
+
+/**
+ * mmc_suspend_host - suspend a host
+ * @host: mmc host
+ * @state: suspend mode (PM_SUSPEND_xxx)
+ */
+int mmc_suspend_host(struct mmc_host *host, pm_message_t state)
+{
+ mmc_flush_scheduled_work();
+
+ mmc_bus_get(host);
+ if (host->bus_ops && !host->bus_dead) {
+ if (host->bus_ops->suspend)
+ host->bus_ops->suspend(host);
+ if (!host->bus_ops->resume) {
+ if (host->bus_ops->remove)
+ host->bus_ops->remove(host);
+
+ mmc_claim_host(host);
+ mmc_detach_bus(host);
+ mmc_release_host(host);
+ }
+ }
+ mmc_bus_put(host);
+
+ mmc_power_off(host);
+
+ return 0;
+}
+
+EXPORT_SYMBOL(mmc_suspend_host);
+
+/**
+ * mmc_resume_host - resume a previously suspended host
+ * @host: mmc host
+ */
+int mmc_resume_host(struct mmc_host *host)
+{
+ mmc_bus_get(host);
+ if (host->bus_ops && !host->bus_dead) {
+ mmc_power_up(host);
+ BUG_ON(!host->bus_ops->resume);
+ host->bus_ops->resume(host);
+ }
+ mmc_bus_put(host);
+
+ /*
+ * We add a slight delay here so that resume can progress
+ * in parallel.
+ */
+ mmc_detect_change(host, 1);
+
+ return 0;
+}
+
+EXPORT_SYMBOL(mmc_resume_host);
+
+#endif
+
+MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/core/core.h b/drivers/mmc/core/core.h
new file mode 100644
index 0000000..177264d
--- /dev/null
+++ b/drivers/mmc/core/core.h
@@ -0,0 +1,70 @@
+/*
+ * linux/drivers/mmc/core/core.h
+ *
+ * Copyright (C) 2003 Russell King, All Rights Reserved.
+ * Copyright 2007 Pierre Ossman
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef _MMC_CORE_CORE_H
+#define _MMC_CORE_CORE_H
+
+#include <linux/delay.h>
+
+#define MMC_CMD_RETRIES 3
+
+struct mmc_bus_ops {
+ void (*remove)(struct mmc_host *);
+ void (*detect)(struct mmc_host *);
+ void (*suspend)(struct mmc_host *);
+ void (*resume)(struct mmc_host *);
+};
+
+void mmc_attach_bus(struct mmc_host *host, const struct mmc_bus_ops *ops);
+void mmc_detach_bus(struct mmc_host *host);
+
+void __mmc_release_bus(struct mmc_host *host);
+
+static inline void mmc_bus_get(struct mmc_host *host)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&host->lock, flags);
+ host->bus_refs++;
+ spin_unlock_irqrestore(&host->lock, flags);
+}
+
+static inline void mmc_bus_put(struct mmc_host *host)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&host->lock, flags);
+ host->bus_refs--;
+ if ((host->bus_refs == 0) && host->bus_ops)
+ __mmc_release_bus(host);
+ spin_unlock_irqrestore(&host->lock, flags);
+}
+
+void mmc_set_chip_select(struct mmc_host *host, int mode);
+void mmc_set_clock(struct mmc_host *host, unsigned int hz);
+void mmc_set_bus_mode(struct mmc_host *host, unsigned int mode);
+void mmc_set_bus_width(struct mmc_host *host, unsigned int width);
+u32 mmc_select_voltage(struct mmc_host *host, u32 ocr);
+void mmc_set_timing(struct mmc_host *host, unsigned int timing);
+
+struct mmc_card *mmc_alloc_card(struct mmc_host *host);
+
+static inline void mmc_delay(unsigned int ms)
+{
+ if (ms < 1000 / HZ) {
+ cond_resched();
+ mdelay(ms);
+ } else {
+ msleep(ms);
+ }
+}
+
+#endif
+
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
new file mode 100644
index 0000000..42cc286
--- /dev/null
+++ b/drivers/mmc/core/mmc.c
@@ -0,0 +1,537 @@
+/*
+ * linux/drivers/mmc/mmc.c
+ *
+ * Copyright (C) 2003-2004 Russell King, All Rights Reserved.
+ * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
+ * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/err.h>
+
+#include <linux/mmc/host.h>
+#include <linux/mmc/card.h>
+#include <linux/mmc/mmc.h>
+
+#include "core.h"
+#include "sysfs.h"
+#include "mmc_ops.h"
+
+static const unsigned int tran_exp[] = {
+ 10000, 100000, 1000000, 10000000,
+ 0, 0, 0, 0
+};
+
+static const unsigned char tran_mant[] = {
+ 0, 10, 12, 13, 15, 20, 25, 30,
+ 35, 40, 45, 50, 55, 60, 70, 80,
+};
+
+static const unsigned int tacc_exp[] = {
+ 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000,
+};
+
+static const unsigned int tacc_mant[] = {
+ 0, 10, 12, 13, 15, 20, 25, 30,
+ 35, 40, 45, 50, 55, 60, 70, 80,
+};
+
+#define UNSTUFF_BITS(resp,start,size) \
+ ({ \
+ const int __size = size; \
+ const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \
+ const int __off = 3 - ((start) / 32); \
+ const int __shft = (start) & 31; \
+ u32 __res; \
+ \
+ __res = resp[__off] >> __shft; \
+ if (__size + __shft > 32) \
+ __res |= resp[__off-1] << ((32 - __shft) % 32); \
+ __res & __mask; \
+ })
+
+/*
+ * Given the decoded CSD structure, decode the raw CID to our CID structure.
+ */
+static int mmc_decode_cid(struct mmc_card *card)
+{
+ u32 *resp = card->raw_cid;
+
+ /*
+ * The selection of the format here is based upon published
+ * specs from sandisk and from what people have reported.
+ */
+ switch (card->csd.mmca_vsn) {
+ case 0: /* MMC v1.0 - v1.2 */
+ case 1: /* MMC v1.4 */
+ card->cid.manfid = UNSTUFF_BITS(resp, 104, 24);
+ card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8);
+ card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8);
+ card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8);
+ card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8);
+ card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8);
+ card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8);
+ card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8);
+ card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4);
+ card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4);
+ card->cid.serial = UNSTUFF_BITS(resp, 16, 24);
+ card->cid.month = UNSTUFF_BITS(resp, 12, 4);
+ card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997;
+ break;
+
+ case 2: /* MMC v2.0 - v2.2 */
+ case 3: /* MMC v3.1 - v3.3 */
+ case 4: /* MMC v4 */
+ card->cid.manfid = UNSTUFF_BITS(resp, 120, 8);
+ card->cid.oemid = UNSTUFF_BITS(resp, 104, 16);
+ card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8);
+ card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8);
+ card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8);
+ card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8);
+ card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8);
+ card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8);
+ card->cid.serial = UNSTUFF_BITS(resp, 16, 32);
+ card->cid.month = UNSTUFF_BITS(resp, 12, 4);
+ card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997;
+ break;
+
+ default:
+ printk("%s: card has unknown MMCA version %d\n",
+ mmc_hostname(card->host), card->csd.mmca_vsn);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/*
+ * Given a 128-bit response, decode to our card CSD structure.
+ */
+static int mmc_decode_csd(struct mmc_card *card)
+{
+ struct mmc_csd *csd = &card->csd;
+ unsigned int e, m, csd_struct;
+ u32 *resp = card->raw_csd;
+
+ /*
+ * We only understand CSD structure v1.1 and v1.2.
+ * v1.2 has extra information in bits 15, 11 and 10.
+ */
+ csd_struct = UNSTUFF_BITS(resp, 126, 2);
+ if (csd_struct != 1 && csd_struct != 2) {
+ printk("%s: unrecognised CSD structure version %d\n",
+ mmc_hostname(card->host), csd_struct);
+ return -EINVAL;
+ }
+
+ csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4);
+ m = UNSTUFF_BITS(resp, 115, 4);
+ e = UNSTUFF_BITS(resp, 112, 3);
+ csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10;
+ csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100;
+
+ m = UNSTUFF_BITS(resp, 99, 4);
+ e = UNSTUFF_BITS(resp, 96, 3);
+ csd->max_dtr = tran_exp[e] * tran_mant[m];
+ csd->cmdclass = UNSTUFF_BITS(resp, 84, 12);
+
+ e = UNSTUFF_BITS(resp, 47, 3);
+ m = UNSTUFF_BITS(resp, 62, 12);
+ csd->capacity = (1 + m) << (e + 2);
+
+ csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4);
+ csd->read_partial = UNSTUFF_BITS(resp, 79, 1);
+ csd->write_misalign = UNSTUFF_BITS(resp, 78, 1);
+ csd->read_misalign = UNSTUFF_BITS(resp, 77, 1);
+ csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3);
+ csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4);
+ csd->write_partial = UNSTUFF_BITS(resp, 21, 1);
+
+ return 0;
+}
+
+/*
+ * Read and decode extended CSD.
+ */
+static int mmc_read_ext_csd(struct mmc_card *card)
+{
+ int err;
+ u8 *ext_csd;
+
+ BUG_ON(!card);
+
+ err = MMC_ERR_FAILED;
+
+ if (card->csd.mmca_vsn < CSD_SPEC_VER_4)
+ return MMC_ERR_NONE;
+
+ /*
+ * As the ext_csd is so large and mostly unused, we don't store the
+ * raw block in mmc_card.
+ */
+ ext_csd = kmalloc(512, GFP_KERNEL);
+ if (!ext_csd) {
+ printk(KERN_ERR "%s: could not allocate a buffer to "
+ "receive the ext_csd. mmc v4 cards will be "
+ "treated as v3.\n", mmc_hostname(card->host));
+ return MMC_ERR_FAILED;
+ }
+
+ err = mmc_send_ext_csd(card, ext_csd);
+ if (err != MMC_ERR_NONE) {
+ /*
+ * High capacity cards should have this "magic" size
+ * stored in their CSD.
+ */
+ if (card->csd.capacity == (4096 * 512)) {
+ printk(KERN_ERR "%s: unable to read EXT_CSD "
+ "on a possible high capacity card. "
+ "Card will be ignored.\n",
+ mmc_hostname(card->host));
+ } else {
+ printk(KERN_WARNING "%s: unable to read "
+ "EXT_CSD, performance might "
+ "suffer.\n",
+ mmc_hostname(card->host));
+ err = MMC_ERR_NONE;
+ }
+ goto out;
+ }
+
+ card->ext_csd.sectors =
+ ext_csd[EXT_CSD_SEC_CNT + 0] << 0 |
+ ext_csd[EXT_CSD_SEC_CNT + 1] << 8 |
+ ext_csd[EXT_CSD_SEC_CNT + 2] << 16 |
+ ext_csd[EXT_CSD_SEC_CNT + 3] << 24;
+ if (card->ext_csd.sectors)
+ mmc_card_set_blockaddr(card);
+
+ switch (ext_csd[EXT_CSD_CARD_TYPE]) {
+ case EXT_CSD_CARD_TYPE_52 | EXT_CSD_CARD_TYPE_26:
+ card->ext_csd.hs_max_dtr = 52000000;
+ break;
+ case EXT_CSD_CARD_TYPE_26:
+ card->ext_csd.hs_max_dtr = 26000000;
+ break;
+ default:
+ /* MMC v4 spec says this cannot happen */
+ printk(KERN_WARNING "%s: card is mmc v4 but doesn't "
+ "support any high-speed modes.\n",
+ mmc_hostname(card->host));
+ goto out;
+ }
+
+out:
+ kfree(ext_csd);
+
+ return err;
+}
+
+/*
+ * Handle the detection and initialisation of a card.
+ *
+ * In the case of a resume, "curcard" will contain the card
+ * we're trying to reinitialise.
+ */
+static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
+ struct mmc_card *oldcard)
+{
+ struct mmc_card *card;
+ int err;
+ u32 cid[4];
+ unsigned int max_dtr;
+
+ BUG_ON(!host);
+ BUG_ON(!host->claimed);
+
+ /*
+ * Since we're changing the OCR value, we seem to
+ * need to tell some cards to go back to the idle
+ * state. We wait 1ms to give cards time to
+ * respond.
+ */
+ mmc_go_idle(host);
+
+ /* The extra bit indicates that we support high capacity */
+ err = mmc_send_op_cond(host, ocr | (1 << 30), NULL);
+ if (err != MMC_ERR_NONE)
+ goto err;
+
+ /*
+ * Fetch CID from card.
+ */
+ err = mmc_all_send_cid(host, cid);
+ if (err != MMC_ERR_NONE)
+ goto err;
+
+ if (oldcard) {
+ if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0)
+ goto err;
+
+ card = oldcard;
+ } else {
+ /*
+ * Allocate card structure.
+ */
+ card = mmc_alloc_card(host);
+ if (IS_ERR(card))
+ goto err;
+
+ card->type = MMC_TYPE_MMC;
+ card->rca = 1;
+ memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
+ }
+
+ /*
+ * Set card RCA.
+ */
+ err = mmc_set_relative_addr(card);
+ if (err != MMC_ERR_NONE)
+ goto free_card;
+
+ mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
+
+ if (!oldcard) {
+ /*
+ * Fetch CSD from card.
+ */
+ err = mmc_send_csd(card, card->raw_csd);
+ if (err != MMC_ERR_NONE)
+ goto free_card;
+
+ err = mmc_decode_csd(card);
+ if (err < 0)
+ goto free_card;
+ err = mmc_decode_cid(card);
+ if (err < 0)
+ goto free_card;
+ }
+
+ /*
+ * Select card, as all following commands rely on that.
+ */
+ err = mmc_select_card(card);
+ if (err != MMC_ERR_NONE)
+ goto free_card;
+
+ if (!oldcard) {
+ /*
+ * Fetch and process extened CSD.
+ */
+ err = mmc_read_ext_csd(card);
+ if (err != MMC_ERR_NONE)
+ goto free_card;
+ }
+
+ /*
+ * Activate high speed (if supported)
+ */
+ if ((card->ext_csd.hs_max_dtr != 0) &&
+ (host->caps & MMC_CAP_MMC_HIGHSPEED)) {
+ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_HS_TIMING, 1);
+ if (err != MMC_ERR_NONE)
+ goto free_card;
+
+ mmc_card_set_highspeed(card);
+
+ mmc_set_timing(card->host, MMC_TIMING_MMC_HS);
+ }
+
+ /*
+ * Compute bus speed.
+ */
+ max_dtr = (unsigned int)-1;
+
+ if (mmc_card_highspeed(card)) {
+ if (max_dtr > card->ext_csd.hs_max_dtr)
+ max_dtr = card->ext_csd.hs_max_dtr;
+ } else if (max_dtr > card->csd.max_dtr) {
+ max_dtr = card->csd.max_dtr;
+ }
+
+ mmc_set_clock(host, max_dtr);
+
+ /*
+ * Activate wide bus (if supported).
+ */
+ if ((card->csd.mmca_vsn >= CSD_SPEC_VER_4) &&
+ (host->caps & MMC_CAP_4_BIT_DATA)) {
+ err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_BUS_WIDTH, EXT_CSD_BUS_WIDTH_4);
+ if (err != MMC_ERR_NONE)
+ goto free_card;
+
+ mmc_set_bus_width(card->host, MMC_BUS_WIDTH_4);
+ }
+
+ if (!oldcard)
+ host->card = card;
+
+ return MMC_ERR_NONE;
+
+free_card:
+ if (!oldcard)
+ mmc_remove_card(card);
+err:
+
+ return MMC_ERR_FAILED;
+}
+
+/*
+ * Host is being removed. Free up the current card.
+ */
+static void mmc_remove(struct mmc_host *host)
+{
+ BUG_ON(!host);
+ BUG_ON(!host->card);
+
+ mmc_remove_card(host->card);
+ host->card = NULL;
+}
+
+/*
+ * Card detection callback from host.
+ */
+static void mmc_detect(struct mmc_host *host)
+{
+ int err;
+
+ BUG_ON(!host);
+ BUG_ON(!host->card);
+
+ mmc_claim_host(host);
+
+ /*
+ * Just check if our card has been removed.
+ */
+ err = mmc_send_status(host->card, NULL);
+
+ mmc_release_host(host);
+
+ if (err != MMC_ERR_NONE) {
+ mmc_remove_card(host->card);
+ host->card = NULL;
+
+ mmc_claim_host(host);
+ mmc_detach_bus(host);
+ mmc_release_host(host);
+ }
+}
+
+#ifdef CONFIG_MMC_UNSAFE_RESUME
+
+/*
+ * Suspend callback from host.
+ */
+static void mmc_suspend(struct mmc_host *host)
+{
+ BUG_ON(!host);
+ BUG_ON(!host->card);
+
+ mmc_claim_host(host);
+ mmc_deselect_cards(host);
+ host->card->state &= ~MMC_STATE_HIGHSPEED;
+ mmc_release_host(host);
+}
+
+/*
+ * Resume callback from host.
+ *
+ * This function tries to determine if the same card is still present
+ * and, if so, restore all state to it.
+ */
+static void mmc_resume(struct mmc_host *host)
+{
+ int err;
+
+ BUG_ON(!host);
+ BUG_ON(!host->card);
+
+ mmc_claim_host(host);
+
+ err = mmc_sd_init_card(host, host->ocr, host->card);
+ if (err != MMC_ERR_NONE) {
+ mmc_remove_card(host->card);
+ host->card = NULL;
+
+ mmc_detach_bus(host);
+ }
+
+ mmc_release_host(host);
+}
+
+#else
+
+#define mmc_suspend NULL
+#define mmc_resume NULL
+
+#endif
+
+static const struct mmc_bus_ops mmc_ops = {
+ .remove = mmc_remove,
+ .detect = mmc_detect,
+ .suspend = mmc_suspend,
+ .resume = mmc_resume,
+};
+
+/*
+ * Starting point for MMC card init.
+ */
+int mmc_attach_mmc(struct mmc_host *host, u32 ocr)
+{
+ int err;
+
+ BUG_ON(!host);
+ BUG_ON(!host->claimed);
+
+ mmc_attach_bus(host, &mmc_ops);
+
+ /*
+ * Sanity check the voltages that the card claims to
+ * support.
+ */
+ if (ocr & 0x7F) {
+ printk(KERN_WARNING "%s: card claims to support voltages "
+ "below the defined range. These will be ignored.\n",
+ mmc_hostname(host));
+ ocr &= ~0x7F;
+ }
+
+ host->ocr = mmc_select_voltage(host, ocr);
+
+ /*
+ * Can we support the voltage of the card?
+ */
+ if (!host->ocr)
+ goto err;
+
+ /*
+ * Detect and init the card.
+ */
+ err = mmc_sd_init_card(host, host->ocr, NULL);
+ if (err != MMC_ERR_NONE)
+ goto err;
+
+ mmc_release_host(host);
+
+ err = mmc_register_card(host->card);
+ if (err)
+ goto reclaim_host;
+
+ return 0;
+
+reclaim_host:
+ mmc_claim_host(host);
+ mmc_remove_card(host->card);
+ host->card = NULL;
+err:
+ mmc_detach_bus(host);
+ mmc_release_host(host);
+
+ return 0;
+}
+
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
new file mode 100644
index 0000000..7dd720f
--- /dev/null
+++ b/drivers/mmc/core/mmc_ops.c
@@ -0,0 +1,276 @@
+/*
+ * linux/drivers/mmc/mmc_ops.h
+ *
+ * Copyright 2006-2007 Pierre Ossman
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+
+#include <linux/types.h>
+#include <asm/scatterlist.h>
+#include <linux/scatterlist.h>
+
+#include <linux/mmc/host.h>
+#include <linux/mmc/card.h>
+#include <linux/mmc/mmc.h>
+
+#include "core.h"
+#include "mmc_ops.h"
+
+static int _mmc_select_card(struct mmc_host *host, struct mmc_card *card)
+{
+ int err;
+ struct mmc_command cmd;
+
+ BUG_ON(!host);
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+
+ cmd.opcode = MMC_SELECT_CARD;
+
+ if (card) {
+ cmd.arg = card->rca << 16;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
+ } else {
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_NONE | MMC_CMD_AC;
+ }
+
+ err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
+ if (err != MMC_ERR_NONE)
+ return err;
+
+ return MMC_ERR_NONE;
+}
+
+int mmc_select_card(struct mmc_card *card)
+{
+ BUG_ON(!card);
+
+ return _mmc_select_card(card->host, card);
+}
+
+int mmc_deselect_cards(struct mmc_host *host)
+{
+ return _mmc_select_card(host, NULL);
+}
+
+int mmc_go_idle(struct mmc_host *host)
+{
+ int err;
+ struct mmc_command cmd;
+
+ mmc_set_chip_select(host, MMC_CS_HIGH);
+
+ mmc_delay(1);
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+
+ cmd.opcode = MMC_GO_IDLE_STATE;
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_NONE | MMC_CMD_BC;
+
+ err = mmc_wait_for_cmd(host, &cmd, 0);
+
+ mmc_delay(1);
+
+ mmc_set_chip_select(host, MMC_CS_DONTCARE);
+
+ mmc_delay(1);
+
+ return err;
+}
+
+int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
+{
+ struct mmc_command cmd;
+ int i, err = 0;
+
+ BUG_ON(!host);
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+
+ cmd.opcode = MMC_SEND_OP_COND;
+ cmd.arg = ocr;
+ cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
+
+ for (i = 100; i; i--) {
+ err = mmc_wait_for_cmd(host, &cmd, 0);
+ if (err != MMC_ERR_NONE)
+ break;
+
+ if (cmd.resp[0] & MMC_CARD_BUSY || ocr == 0)
+ break;
+
+ err = MMC_ERR_TIMEOUT;
+
+ mmc_delay(10);
+ }
+
+ if (rocr)
+ *rocr = cmd.resp[0];
+
+ return err;
+}
+
+int mmc_all_send_cid(struct mmc_host *host, u32 *cid)
+{
+ int err;
+ struct mmc_command cmd;
+
+ BUG_ON(!host);
+ BUG_ON(!cid);
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+
+ cmd.opcode = MMC_ALL_SEND_CID;
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
+
+ err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
+ if (err != MMC_ERR_NONE)
+ return err;
+
+ memcpy(cid, cmd.resp, sizeof(u32) * 4);
+
+ return MMC_ERR_NONE;
+}
+
+int mmc_set_relative_addr(struct mmc_card *card)
+{
+ int err;
+ struct mmc_command cmd;
+
+ BUG_ON(!card);
+ BUG_ON(!card->host);
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+
+ cmd.opcode = MMC_SET_RELATIVE_ADDR;
+ cmd.arg = card->rca << 16;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
+
+ err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES);
+ if (err != MMC_ERR_NONE)
+ return err;
+
+ return MMC_ERR_NONE;
+}
+
+int mmc_send_csd(struct mmc_card *card, u32 *csd)
+{
+ int err;
+ struct mmc_command cmd;
+
+ BUG_ON(!card);
+ BUG_ON(!card->host);
+ BUG_ON(!csd);
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+
+ cmd.opcode = MMC_SEND_CSD;
+ cmd.arg = card->rca << 16;
+ cmd.flags = MMC_RSP_R2 | MMC_CMD_AC;
+
+ err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES);
+ if (err != MMC_ERR_NONE)
+ return err;
+
+ memcpy(csd, cmd.resp, sizeof(u32) * 4);
+
+ return MMC_ERR_NONE;
+}
+
+int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd)
+{
+ struct mmc_request mrq;
+ struct mmc_command cmd;
+ struct mmc_data data;
+ struct scatterlist sg;
+
+ BUG_ON(!card);
+ BUG_ON(!card->host);
+ BUG_ON(!ext_csd);
+
+ memset(&mrq, 0, sizeof(struct mmc_request));
+ memset(&cmd, 0, sizeof(struct mmc_command));
+ memset(&data, 0, sizeof(struct mmc_data));
+
+ mrq.cmd = &cmd;
+ mrq.data = &data;
+
+ cmd.opcode = MMC_SEND_EXT_CSD;
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+
+ data.blksz = 512;
+ data.blocks = 1;
+ data.flags = MMC_DATA_READ;
+ data.sg = &sg;
+ data.sg_len = 1;
+
+ sg_init_one(&sg, ext_csd, 512);
+
+ mmc_set_data_timeout(&data, card, 0);
+
+ mmc_wait_for_req(card->host, &mrq);
+
+ if (cmd.error != MMC_ERR_NONE)
+ return cmd.error;
+ if (data.error != MMC_ERR_NONE)
+ return data.error;
+
+ return MMC_ERR_NONE;
+}
+
+int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value)
+{
+ int err;
+ struct mmc_command cmd;
+
+ BUG_ON(!card);
+ BUG_ON(!card->host);
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+
+ cmd.opcode = MMC_SWITCH;
+ cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
+ (index << 16) |
+ (value << 8) |
+ set;
+ cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
+
+ err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES);
+ if (err != MMC_ERR_NONE)
+ return err;
+
+ return MMC_ERR_NONE;
+}
+
+int mmc_send_status(struct mmc_card *card, u32 *status)
+{
+ int err;
+ struct mmc_command cmd;
+
+ BUG_ON(!card);
+ BUG_ON(!card->host);
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+
+ cmd.opcode = MMC_SEND_STATUS;
+ cmd.arg = card->rca << 16;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
+
+ err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES);
+ if (err != MMC_ERR_NONE)
+ return err;
+
+ if (status)
+ *status = cmd.resp[0];
+
+ return MMC_ERR_NONE;
+}
+
diff --git a/drivers/mmc/core/mmc_ops.h b/drivers/mmc/core/mmc_ops.h
new file mode 100644
index 0000000..7a481e8
--- /dev/null
+++ b/drivers/mmc/core/mmc_ops.h
@@ -0,0 +1,27 @@
+/*
+ * linux/drivers/mmc/mmc_ops.h
+ *
+ * Copyright 2006-2007 Pierre Ossman
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+
+#ifndef _MMC_MMC_OPS_H
+#define _MMC_MMC_OPS_H
+
+int mmc_select_card(struct mmc_card *card);
+int mmc_deselect_cards(struct mmc_host *host);
+int mmc_go_idle(struct mmc_host *host);
+int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr);
+int mmc_all_send_cid(struct mmc_host *host, u32 *cid);
+int mmc_set_relative_addr(struct mmc_card *card);
+int mmc_send_csd(struct mmc_card *card, u32 *csd);
+int mmc_send_ext_csd(struct mmc_card *card, u8 *ext_csd);
+int mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value);
+int mmc_send_status(struct mmc_card *card, u32 *status);
+
+#endif
+
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
new file mode 100644
index 0000000..c1dfd03
--- /dev/null
+++ b/drivers/mmc/core/sd.c
@@ -0,0 +1,587 @@
+/*
+ * linux/drivers/mmc/sd.c
+ *
+ * Copyright (C) 2003-2004 Russell King, All Rights Reserved.
+ * SD support Copyright (C) 2004 Ian Molton, All Rights Reserved.
+ * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/err.h>
+
+#include <linux/mmc/host.h>
+#include <linux/mmc/card.h>
+#include <linux/mmc/mmc.h>
+
+#include "core.h"
+#include "sysfs.h"
+#include "mmc_ops.h"
+#include "sd_ops.h"
+
+#include "core.h"
+
+static const unsigned int tran_exp[] = {
+ 10000, 100000, 1000000, 10000000,
+ 0, 0, 0, 0
+};
+
+static const unsigned char tran_mant[] = {
+ 0, 10, 12, 13, 15, 20, 25, 30,
+ 35, 40, 45, 50, 55, 60, 70, 80,
+};
+
+static const unsigned int tacc_exp[] = {
+ 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000,
+};
+
+static const unsigned int tacc_mant[] = {
+ 0, 10, 12, 13, 15, 20, 25, 30,
+ 35, 40, 45, 50, 55, 60, 70, 80,
+};
+
+#define UNSTUFF_BITS(resp,start,size) \
+ ({ \
+ const int __size = size; \
+ const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \
+ const int __off = 3 - ((start) / 32); \
+ const int __shft = (start) & 31; \
+ u32 __res; \
+ \
+ __res = resp[__off] >> __shft; \
+ if (__size + __shft > 32) \
+ __res |= resp[__off-1] << ((32 - __shft) % 32); \
+ __res & __mask; \
+ })
+
+/*
+ * Given the decoded CSD structure, decode the raw CID to our CID structure.
+ */
+static void mmc_decode_cid(struct mmc_card *card)
+{
+ u32 *resp = card->raw_cid;
+
+ memset(&card->cid, 0, sizeof(struct mmc_cid));
+
+ /*
+ * SD doesn't currently have a version field so we will
+ * have to assume we can parse this.
+ */
+ card->cid.manfid = UNSTUFF_BITS(resp, 120, 8);
+ card->cid.oemid = UNSTUFF_BITS(resp, 104, 16);
+ card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8);
+ card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8);
+ card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8);
+ card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8);
+ card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8);
+ card->cid.hwrev = UNSTUFF_BITS(resp, 60, 4);
+ card->cid.fwrev = UNSTUFF_BITS(resp, 56, 4);
+ card->cid.serial = UNSTUFF_BITS(resp, 24, 32);
+ card->cid.year = UNSTUFF_BITS(resp, 12, 8);
+ card->cid.month = UNSTUFF_BITS(resp, 8, 4);
+
+ card->cid.year += 2000; /* SD cards year offset */
+}
+
+/*
+ * Given a 128-bit response, decode to our card CSD structure.
+ */
+static int mmc_decode_csd(struct mmc_card *card)
+{
+ struct mmc_csd *csd = &card->csd;
+ unsigned int e, m, csd_struct;
+ u32 *resp = card->raw_csd;
+
+ csd_struct = UNSTUFF_BITS(resp, 126, 2);
+
+ switch (csd_struct) {
+ case 0:
+ m = UNSTUFF_BITS(resp, 115, 4);
+ e = UNSTUFF_BITS(resp, 112, 3);
+ csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10;
+ csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100;
+
+ m = UNSTUFF_BITS(resp, 99, 4);
+ e = UNSTUFF_BITS(resp, 96, 3);
+ csd->max_dtr = tran_exp[e] * tran_mant[m];
+ csd->cmdclass = UNSTUFF_BITS(resp, 84, 12);
+
+ e = UNSTUFF_BITS(resp, 47, 3);
+ m = UNSTUFF_BITS(resp, 62, 12);
+ csd->capacity = (1 + m) << (e + 2);
+
+ csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4);
+ csd->read_partial = UNSTUFF_BITS(resp, 79, 1);
+ csd->write_misalign = UNSTUFF_BITS(resp, 78, 1);
+ csd->read_misalign = UNSTUFF_BITS(resp, 77, 1);
+ csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3);
+ csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4);
+ csd->write_partial = UNSTUFF_BITS(resp, 21, 1);
+ break;
+ case 1:
+ /*
+ * This is a block-addressed SDHC card. Most
+ * interesting fields are unused and have fixed
+ * values. To avoid getting tripped by buggy cards,
+ * we assume those fixed values ourselves.
+ */
+ mmc_card_set_blockaddr(card);
+
+ csd->tacc_ns = 0; /* Unused */
+ csd->tacc_clks = 0; /* Unused */
+
+ m = UNSTUFF_BITS(resp, 99, 4);
+ e = UNSTUFF_BITS(resp, 96, 3);
+ csd->max_dtr = tran_exp[e] * tran_mant[m];
+ csd->cmdclass = UNSTUFF_BITS(resp, 84, 12);
+
+ m = UNSTUFF_BITS(resp, 48, 22);
+ csd->capacity = (1 + m) << 10;
+
+ csd->read_blkbits = 9;
+ csd->read_partial = 0;
+ csd->write_misalign = 0;
+ csd->read_misalign = 0;
+ csd->r2w_factor = 4; /* Unused */
+ csd->write_blkbits = 9;
+ csd->write_partial = 0;
+ break;
+ default:
+ printk("%s: unrecognised CSD structure version %d\n",
+ mmc_hostname(card->host), csd_struct);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/*
+ * Given a 64-bit response, decode to our card SCR structure.
+ */
+static int mmc_decode_scr(struct mmc_card *card)
+{
+ struct sd_scr *scr = &card->scr;
+ unsigned int scr_struct;
+ u32 resp[4];
+
+ BUG_ON(!mmc_card_sd(card));
+
+ resp[3] = card->raw_scr[1];
+ resp[2] = card->raw_scr[0];
+
+ scr_struct = UNSTUFF_BITS(resp, 60, 4);
+ if (scr_struct != 0) {
+ printk("%s: unrecognised SCR structure version %d\n",
+ mmc_hostname(card->host), scr_struct);
+ return -EINVAL;
+ }
+
+ scr->sda_vsn = UNSTUFF_BITS(resp, 56, 4);
+ scr->bus_widths = UNSTUFF_BITS(resp, 48, 4);
+
+ return 0;
+}
+
+/*
+ * Fetches and decodes switch information
+ */
+static int mmc_read_switch(struct mmc_card *card)
+{
+ int err;
+ u8 *status;
+
+ err = MMC_ERR_FAILED;
+
+ status = kmalloc(64, GFP_KERNEL);
+ if (!status) {
+ printk("%s: could not allocate a buffer for switch "
+ "capabilities.\n",
+ mmc_hostname(card->host));
+ return err;
+ }
+
+ err = mmc_sd_switch(card, 0, 0, 1, status);
+ if (err != MMC_ERR_NONE) {
+ /*
+ * Card not supporting high-speed will ignore the
+ * command.
+ */
+ err = MMC_ERR_NONE;
+ goto out;
+ }
+
+ if (status[13] & 0x02)
+ card->sw_caps.hs_max_dtr = 50000000;
+
+out:
+ kfree(status);
+
+ return err;
+}
+
+/*
+ * Test if the card supports high-speed mode and, if so, switch to it.
+ */
+static int mmc_switch_hs(struct mmc_card *card)
+{
+ int err;
+ u8 *status;
+
+ if (!(card->host->caps & MMC_CAP_SD_HIGHSPEED))
+ return MMC_ERR_NONE;
+
+ if (card->sw_caps.hs_max_dtr == 0)
+ return MMC_ERR_NONE;
+
+ err = MMC_ERR_FAILED;
+
+ status = kmalloc(64, GFP_KERNEL);
+ if (!status) {
+ printk("%s: could not allocate a buffer for switch "
+ "capabilities.\n",
+ mmc_hostname(card->host));
+ return err;
+ }
+
+ err = mmc_sd_switch(card, 1, 0, 1, status);
+ if (err != MMC_ERR_NONE)
+ goto out;
+
+ if ((status[16] & 0xF) != 1) {
+ printk(KERN_WARNING "%s: Problem switching card "
+ "into high-speed mode!\n",
+ mmc_hostname(card->host));
+ } else {
+ mmc_card_set_highspeed(card);
+ mmc_set_timing(card->host, MMC_TIMING_SD_HS);
+ }
+
+out:
+ kfree(status);
+
+ return err;
+}
+
+/*
+ * Handle the detection and initialisation of a card.
+ *
+ * In the case of a resume, "curcard" will contain the card
+ * we're trying to reinitialise.
+ */
+static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
+ struct mmc_card *oldcard)
+{
+ struct mmc_card *card;
+ int err;
+ u32 cid[4];
+ unsigned int max_dtr;
+
+ BUG_ON(!host);
+ BUG_ON(!host->claimed);
+
+ /*
+ * Since we're changing the OCR value, we seem to
+ * need to tell some cards to go back to the idle
+ * state. We wait 1ms to give cards time to
+ * respond.
+ */
+ mmc_go_idle(host);
+
+ /*
+ * If SD_SEND_IF_COND indicates an SD 2.0
+ * compliant card and we should set bit 30
+ * of the ocr to indicate that we can handle
+ * block-addressed SDHC cards.
+ */
+ err = mmc_send_if_cond(host, ocr);
+ if (err == MMC_ERR_NONE)
+ ocr |= 1 << 30;
+
+ err = mmc_send_app_op_cond(host, ocr, NULL);
+ if (err != MMC_ERR_NONE)
+ goto err;
+
+ /*
+ * Fetch CID from card.
+ */
+ err = mmc_all_send_cid(host, cid);
+ if (err != MMC_ERR_NONE)
+ goto err;
+
+ if (oldcard) {
+ if (memcmp(cid, oldcard->raw_cid, sizeof(cid)) != 0)
+ goto err;
+
+ card = oldcard;
+ } else {
+ /*
+ * Allocate card structure.
+ */
+ card = mmc_alloc_card(host);
+ if (IS_ERR(card))
+ goto err;
+
+ card->type = MMC_TYPE_SD;
+ memcpy(card->raw_cid, cid, sizeof(card->raw_cid));
+ }
+
+ /*
+ * Set card RCA.
+ */
+ err = mmc_send_relative_addr(host, &card->rca);
+ if (err != MMC_ERR_NONE)
+ goto free_card;
+
+ mmc_set_bus_mode(host, MMC_BUSMODE_PUSHPULL);
+
+ if (!oldcard) {
+ /*
+ * Fetch CSD from card.
+ */
+ err = mmc_send_csd(card, card->raw_csd);
+ if (err != MMC_ERR_NONE)
+ goto free_card;
+
+ err = mmc_decode_csd(card);
+ if (err < 0)
+ goto free_card;
+
+ mmc_decode_cid(card);
+ }
+
+ /*
+ * Select card, as all following commands rely on that.
+ */
+ err = mmc_select_card(card);
+ if (err != MMC_ERR_NONE)
+ goto free_card;
+
+ if (!oldcard) {
+ /*
+ * Fetch SCR from card.
+ */
+ err = mmc_app_send_scr(card, card->raw_scr);
+ if (err != MMC_ERR_NONE)
+ goto free_card;
+
+ err = mmc_decode_scr(card);
+ if (err < 0)
+ goto free_card;
+
+ /*
+ * Fetch switch information from card.
+ */
+ err = mmc_read_switch(card);
+ if (err != MMC_ERR_NONE)
+ goto free_card;
+ }
+
+ /*
+ * Attempt to change to high-speed (if supported)
+ */
+ err = mmc_switch_hs(card);
+ if (err != MMC_ERR_NONE)
+ goto free_card;
+
+ /*
+ * Compute bus speed.
+ */
+ max_dtr = (unsigned int)-1;
+
+ if (mmc_card_highspeed(card)) {
+ if (max_dtr > card->sw_caps.hs_max_dtr)
+ max_dtr = card->sw_caps.hs_max_dtr;
+ } else if (max_dtr > card->csd.max_dtr) {
+ max_dtr = card->csd.max_dtr;
+ }
+
+ mmc_set_clock(host, max_dtr);
+
+ /*
+ * Switch to wider bus (if supported).
+ */
+ if ((host->caps && MMC_CAP_4_BIT_DATA) &&
+ (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) {
+ err = mmc_app_set_bus_width(card, MMC_BUS_WIDTH_4);
+ if (err != MMC_ERR_NONE)
+ goto free_card;
+
+ mmc_set_bus_width(host, MMC_BUS_WIDTH_4);
+ }
+
+ if (!oldcard)
+ host->card = card;
+
+ return MMC_ERR_NONE;
+
+free_card:
+ if (!oldcard)
+ mmc_remove_card(card);
+err:
+
+ return MMC_ERR_FAILED;
+}
+
+/*
+ * Host is being removed. Free up the current card.
+ */
+static void mmc_sd_remove(struct mmc_host *host)
+{
+ BUG_ON(!host);
+ BUG_ON(!host->card);
+
+ mmc_remove_card(host->card);
+ host->card = NULL;
+}
+
+/*
+ * Card detection callback from host.
+ */
+static void mmc_sd_detect(struct mmc_host *host)
+{
+ int err;
+
+ BUG_ON(!host);
+ BUG_ON(!host->card);
+
+ mmc_claim_host(host);
+
+ /*
+ * Just check if our card has been removed.
+ */
+ err = mmc_send_status(host->card, NULL);
+
+ mmc_release_host(host);
+
+ if (err != MMC_ERR_NONE) {
+ mmc_remove_card(host->card);
+ host->card = NULL;
+
+ mmc_claim_host(host);
+ mmc_detach_bus(host);
+ mmc_release_host(host);
+ }
+}
+
+#ifdef CONFIG_MMC_UNSAFE_RESUME
+
+/*
+ * Suspend callback from host.
+ */
+static void mmc_sd_suspend(struct mmc_host *host)
+{
+ BUG_ON(!host);
+ BUG_ON(!host->card);
+
+ mmc_claim_host(host);
+ mmc_deselect_cards(host);
+ host->card->state &= ~MMC_STATE_HIGHSPEED;
+ mmc_release_host(host);
+}
+
+/*
+ * Resume callback from host.
+ *
+ * This function tries to determine if the same card is still present
+ * and, if so, restore all state to it.
+ */
+static void mmc_sd_resume(struct mmc_host *host)
+{
+ int err;
+
+ BUG_ON(!host);
+ BUG_ON(!host->card);
+
+ mmc_claim_host(host);
+
+ err = mmc_sd_init_card(host, host->ocr, host->card);
+ if (err != MMC_ERR_NONE) {
+ mmc_remove_card(host->card);
+ host->card = NULL;
+
+ mmc_detach_bus(host);
+ }
+
+ mmc_release_host(host);
+}
+
+#else
+
+#define mmc_sd_suspend NULL
+#define mmc_sd_resume NULL
+
+#endif
+
+static const struct mmc_bus_ops mmc_sd_ops = {
+ .remove = mmc_sd_remove,
+ .detect = mmc_sd_detect,
+ .suspend = mmc_sd_suspend,
+ .resume = mmc_sd_resume,
+};
+
+/*
+ * Starting point for SD card init.
+ */
+int mmc_attach_sd(struct mmc_host *host, u32 ocr)
+{
+ int err;
+
+ BUG_ON(!host);
+ BUG_ON(!host->claimed);
+
+ mmc_attach_bus(host, &mmc_sd_ops);
+
+ /*
+ * Sanity check the voltages that the card claims to
+ * support.
+ */
+ if (ocr & 0x7F) {
+ printk(KERN_WARNING "%s: card claims to support voltages "
+ "below the defined range. These will be ignored.\n",
+ mmc_hostname(host));
+ ocr &= ~0x7F;
+ }
+
+ if (ocr & MMC_VDD_165_195) {
+ printk(KERN_WARNING "%s: SD card claims to support the "
+ "incompletely defined 'low voltage range'. This "
+ "will be ignored.\n", mmc_hostname(host));
+ ocr &= ~MMC_VDD_165_195;
+ }
+
+ host->ocr = mmc_select_voltage(host, ocr);
+
+ /*
+ * Can we support the voltage(s) of the card(s)?
+ */
+ if (!host->ocr)
+ goto err;
+
+ /*
+ * Detect and init the card.
+ */
+ err = mmc_sd_init_card(host, host->ocr, NULL);
+ if (err != MMC_ERR_NONE)
+ goto err;
+
+ mmc_release_host(host);
+
+ err = mmc_register_card(host->card);
+ if (err)
+ goto reclaim_host;
+
+ return 0;
+
+reclaim_host:
+ mmc_claim_host(host);
+ mmc_remove_card(host->card);
+ host->card = NULL;
+err:
+ mmc_detach_bus(host);
+ mmc_release_host(host);
+
+ return 0;
+}
+
diff --git a/drivers/mmc/core/sd_ops.c b/drivers/mmc/core/sd_ops.c
new file mode 100644
index 0000000..9697ce5
--- /dev/null
+++ b/drivers/mmc/core/sd_ops.c
@@ -0,0 +1,316 @@
+/*
+ * linux/drivers/mmc/sd_ops.h
+ *
+ * Copyright 2006-2007 Pierre Ossman
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+
+#include <linux/types.h>
+#include <asm/scatterlist.h>
+#include <linux/scatterlist.h>
+
+#include <linux/mmc/host.h>
+#include <linux/mmc/card.h>
+#include <linux/mmc/mmc.h>
+#include <linux/mmc/sd.h>
+
+#include "core.h"
+#include "sd_ops.h"
+
+/**
+ * mmc_wait_for_app_cmd - start an application command and wait for
+ completion
+ * @host: MMC host to start command
+ * @rca: RCA to send MMC_APP_CMD to
+ * @cmd: MMC command to start
+ * @retries: maximum number of retries
+ *
+ * Sends a MMC_APP_CMD, checks the card response, sends the command
+ * in the parameter and waits for it to complete. Return any error
+ * that occurred while the command was executing. Do not attempt to
+ * parse the response.
+ */
+int mmc_wait_for_app_cmd(struct mmc_host *host, struct mmc_card *card,
+ struct mmc_command *cmd, int retries)
+{
+ struct mmc_request mrq;
+
+ int i, err;
+
+ BUG_ON(!cmd);
+ BUG_ON(retries < 0);
+
+ err = MMC_ERR_INVALID;
+
+ /*
+ * We have to resend MMC_APP_CMD for each attempt so
+ * we cannot use the retries field in mmc_command.
+ */
+ for (i = 0;i <= retries;i++) {
+ memset(&mrq, 0, sizeof(struct mmc_request));
+
+ err = mmc_app_cmd(host, card);
+ if (err != MMC_ERR_NONE)
+ continue;
+
+ memset(&mrq, 0, sizeof(struct mmc_request));
+
+ memset(cmd->resp, 0, sizeof(cmd->resp));
+ cmd->retries = 0;
+
+ mrq.cmd = cmd;
+ cmd->data = NULL;
+
+ mmc_wait_for_req(host, &mrq);
+
+ err = cmd->error;
+ if (cmd->error == MMC_ERR_NONE)
+ break;
+ }
+
+ return err;
+}
+
+EXPORT_SYMBOL(mmc_wait_for_app_cmd);
+
+int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card)
+{
+ int err;
+ struct mmc_command cmd;
+
+ BUG_ON(!host);
+ BUG_ON(card && (card->host != host));
+
+ cmd.opcode = MMC_APP_CMD;
+
+ if (card) {
+ cmd.arg = card->rca << 16;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
+ } else {
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_BCR;
+ }
+
+ err = mmc_wait_for_cmd(host, &cmd, 0);
+ if (err != MMC_ERR_NONE)
+ return err;
+
+ /* Check that card supported application commands */
+ if (!(cmd.resp[0] & R1_APP_CMD))
+ return MMC_ERR_FAILED;
+
+ return MMC_ERR_NONE;
+}
+
+int mmc_app_set_bus_width(struct mmc_card *card, int width)
+{
+ int err;
+ struct mmc_command cmd;
+
+ BUG_ON(!card);
+ BUG_ON(!card->host);
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+
+ cmd.opcode = SD_APP_SET_BUS_WIDTH;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
+
+ switch (width) {
+ case MMC_BUS_WIDTH_1:
+ cmd.arg = SD_BUS_WIDTH_1;
+ break;
+ case MMC_BUS_WIDTH_4:
+ cmd.arg = SD_BUS_WIDTH_4;
+ break;
+ default:
+ return MMC_ERR_INVALID;
+ }
+
+ err = mmc_wait_for_app_cmd(card->host, card, &cmd, MMC_CMD_RETRIES);
+ if (err != MMC_ERR_NONE)
+ return err;
+
+ return MMC_ERR_NONE;
+}
+
+int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
+{
+ struct mmc_command cmd;
+ int i, err = 0;
+
+ BUG_ON(!host);
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+
+ cmd.opcode = SD_APP_OP_COND;
+ cmd.arg = ocr;
+ cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
+
+ for (i = 100; i; i--) {
+ err = mmc_wait_for_app_cmd(host, NULL, &cmd, MMC_CMD_RETRIES);
+ if (err != MMC_ERR_NONE)
+ break;
+
+ if (cmd.resp[0] & MMC_CARD_BUSY || ocr == 0)
+ break;
+
+ err = MMC_ERR_TIMEOUT;
+
+ mmc_delay(10);
+ }
+
+ if (rocr)
+ *rocr = cmd.resp[0];
+
+ return err;
+}
+
+int mmc_send_if_cond(struct mmc_host *host, u32 ocr)
+{
+ struct mmc_command cmd;
+ int err;
+ static const u8 test_pattern = 0xAA;
+
+ /*
+ * To support SD 2.0 cards, we must always invoke SD_SEND_IF_COND
+ * before SD_APP_OP_COND. This command will harmlessly fail for
+ * SD 1.0 cards.
+ */
+ cmd.opcode = SD_SEND_IF_COND;
+ cmd.arg = ((ocr & 0xFF8000) != 0) << 8 | test_pattern;
+ cmd.flags = MMC_RSP_R7 | MMC_CMD_BCR;
+
+ err = mmc_wait_for_cmd(host, &cmd, 0);
+ if (err != MMC_ERR_NONE)
+ return err;
+
+ if ((cmd.resp[0] & 0xFF) != test_pattern)
+ return MMC_ERR_FAILED;
+
+ return MMC_ERR_NONE;
+}
+
+int mmc_send_relative_addr(struct mmc_host *host, unsigned int *rca)
+{
+ int err;
+ struct mmc_command cmd;
+
+ BUG_ON(!host);
+ BUG_ON(!rca);
+
+ memset(&cmd, 0, sizeof(struct mmc_command));
+
+ cmd.opcode = SD_SEND_RELATIVE_ADDR;
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
+
+ err = mmc_wait_for_cmd(host, &cmd, MMC_CMD_RETRIES);
+ if (err != MMC_ERR_NONE)
+ return err;
+
+ *rca = cmd.resp[0] >> 16;
+
+ return MMC_ERR_NONE;
+}
+
+int mmc_app_send_scr(struct mmc_card *card, u32 *scr)
+{
+ int err;
+ struct mmc_request mrq;
+ struct mmc_command cmd;
+ struct mmc_data data;
+ struct scatterlist sg;
+
+ BUG_ON(!card);
+ BUG_ON(!card->host);
+ BUG_ON(!scr);
+
+ err = mmc_app_cmd(card->host, card);
+ if (err != MMC_ERR_NONE)
+ return err;
+
+ memset(&mrq, 0, sizeof(struct mmc_request));
+ memset(&cmd, 0, sizeof(struct mmc_command));
+ memset(&data, 0, sizeof(struct mmc_data));
+
+ mrq.cmd = &cmd;
+ mrq.data = &data;
+
+ cmd.opcode = SD_APP_SEND_SCR;
+ cmd.arg = 0;
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+
+ data.blksz = 8;
+ data.blocks = 1;
+ data.flags = MMC_DATA_READ;
+ data.sg = &sg;
+ data.sg_len = 1;
+
+ sg_init_one(&sg, scr, 8);
+
+ mmc_set_data_timeout(&data, card, 0);
+
+ mmc_wait_for_req(card->host, &mrq);
+
+ if (cmd.error != MMC_ERR_NONE)
+ return cmd.error;
+ if (data.error != MMC_ERR_NONE)
+ return data.error;
+
+ scr[0] = ntohl(scr[0]);
+ scr[1] = ntohl(scr[1]);
+
+ return MMC_ERR_NONE;
+}
+
+int mmc_sd_switch(struct mmc_card *card, int mode, int group,
+ u8 value, u8 *resp)
+{
+ struct mmc_request mrq;
+ struct mmc_command cmd;
+ struct mmc_data data;
+ struct scatterlist sg;
+
+ BUG_ON(!card);
+ BUG_ON(!card->host);
+
+ mode = !!mode;
+ value &= 0xF;
+
+ memset(&mrq, 0, sizeof(struct mmc_request));
+ memset(&cmd, 0, sizeof(struct mmc_command));
+ memset(&data, 0, sizeof(struct mmc_data));
+
+ mrq.cmd = &cmd;
+ mrq.data = &data;
+
+ cmd.opcode = SD_SWITCH;
+ cmd.arg = mode << 31 | 0x00FFFFFF;
+ cmd.arg &= ~(0xF << (group * 4));
+ cmd.arg |= value << (group * 4);
+ cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
+
+ data.blksz = 64;
+ data.blocks = 1;
+ data.flags = MMC_DATA_READ;
+ data.sg = &sg;
+ data.sg_len = 1;
+
+ sg_init_one(&sg, resp, 64);
+
+ mmc_set_data_timeout(&data, card, 0);
+
+ mmc_wait_for_req(card->host, &mrq);
+
+ if (cmd.error != MMC_ERR_NONE)
+ return cmd.error;
+ if (data.error != MMC_ERR_NONE)
+ return data.error;
+
+ return MMC_ERR_NONE;
+}
+
diff --git a/drivers/mmc/core/sd_ops.h b/drivers/mmc/core/sd_ops.h
new file mode 100644
index 0000000..1240fdd
--- /dev/null
+++ b/drivers/mmc/core/sd_ops.h
@@ -0,0 +1,25 @@
+/*
+ * linux/drivers/mmc/sd_ops.h
+ *
+ * Copyright 2006-2007 Pierre Ossman
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+
+#ifndef _MMC_SD_OPS_H
+#define _MMC_SD_OPS_H
+
+int mmc_app_cmd(struct mmc_host *host, struct mmc_card *card);
+int mmc_app_set_bus_width(struct mmc_card *card, int width);
+int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr);
+int mmc_send_if_cond(struct mmc_host *host, u32 ocr);
+int mmc_send_relative_addr(struct mmc_host *host, unsigned int *rca);
+int mmc_app_send_scr(struct mmc_card *card, u32 *scr);
+int mmc_sd_switch(struct mmc_card *card, int mode, int group,
+ u8 value, u8 *resp);
+
+#endif
+
diff --git a/drivers/mmc/mmc_sysfs.c b/drivers/mmc/core/sysfs.c
similarity index 97%
rename from drivers/mmc/mmc_sysfs.c
rename to drivers/mmc/core/sysfs.c
index e0e82d8..843b1fb 100644
--- a/drivers/mmc/mmc_sysfs.c
+++ b/drivers/mmc/core/sysfs.c
@@ -1,5 +1,5 @@
/*
- * linux/drivers/mmc/mmc_sysfs.c
+ * linux/drivers/mmc/core/sysfs.c
*
* Copyright (C) 2003 Russell King, All Rights Reserved.
*
@@ -18,7 +18,7 @@
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
-#include "mmc.h"
+#include "sysfs.h"
#define dev_to_mmc_card(d) container_of(d, struct mmc_card, dev)
#define to_mmc_driver(d) container_of(d, struct mmc_driver, drv)
@@ -72,12 +72,11 @@
/*
* This currently matches any MMC driver to any MMC card - drivers
* themselves make the decision whether to drive this card in their
- * probe method. However, we force "bad" cards to fail.
+ * probe method.
*/
static int mmc_bus_match(struct device *dev, struct device_driver *drv)
{
- struct mmc_card *card = dev_to_mmc_card(dev);
- return !mmc_card_bad(card);
+ return 1;
}
static int
@@ -217,6 +216,8 @@
device_del(&card->dev);
}
}
+ if (ret == 0)
+ mmc_card_set_present(card);
return ret;
}
diff --git a/drivers/mmc/mmc.h b/drivers/mmc/core/sysfs.h
similarity index 86%
rename from drivers/mmc/mmc.h
rename to drivers/mmc/core/sysfs.h
index 149affe..80e29b3 100644
--- a/drivers/mmc/mmc.h
+++ b/drivers/mmc/core/sysfs.h
@@ -1,15 +1,16 @@
/*
- * linux/drivers/mmc/mmc.h
+ * linux/drivers/mmc/core/sysfs.h
*
* Copyright (C) 2003 Russell King, All Rights Reserved.
+ * Copyright 2007 Pierre Ossman
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
-#ifndef _MMC_H
-#define _MMC_H
-/* core-internal functions */
+#ifndef _MMC_CORE_SYSFS_H
+#define _MMC_CORE_SYSFS_H
+
void mmc_init_card(struct mmc_card *card, struct mmc_host *host);
int mmc_register_card(struct mmc_card *card);
void mmc_remove_card(struct mmc_card *card);
@@ -22,4 +23,5 @@
int mmc_schedule_work(struct work_struct *work);
int mmc_schedule_delayed_work(struct delayed_work *work, unsigned long delay);
void mmc_flush_scheduled_work(void);
+
#endif
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
new file mode 100644
index 0000000..ed4deab
--- /dev/null
+++ b/drivers/mmc/host/Kconfig
@@ -0,0 +1,103 @@
+#
+# MMC/SD host controller drivers
+#
+
+comment "MMC/SD Host Controller Drivers"
+ depends on MMC
+
+config MMC_ARMMMCI
+ tristate "ARM AMBA Multimedia Card Interface support"
+ depends on ARM_AMBA && MMC
+ help
+ This selects the ARM(R) AMBA(R) PrimeCell Multimedia Card
+ Interface (PL180 and PL181) support. If you have an ARM(R)
+ platform with a Multimedia Card slot, say Y or M here.
+
+ If unsure, say N.
+
+config MMC_PXA
+ tristate "Intel PXA25x/26x/27x Multimedia Card Interface support"
+ depends on ARCH_PXA && MMC
+ help
+ This selects the Intel(R) PXA(R) Multimedia card Interface.
+ If you have a PXA(R) platform with a Multimedia Card slot,
+ say Y or M here.
+
+ If unsure, say N.
+
+config MMC_SDHCI
+ tristate "Secure Digital Host Controller Interface support (EXPERIMENTAL)"
+ depends on PCI && MMC && EXPERIMENTAL
+ help
+ This select the generic Secure Digital Host Controller Interface.
+ It is used by manufacturers such as Texas Instruments(R), Ricoh(R)
+ and Toshiba(R). Most controllers found in laptops are of this type.
+ If you have a controller with this interface, say Y or M here.
+
+ If unsure, say N.
+
+config MMC_OMAP
+ tristate "TI OMAP Multimedia Card Interface support"
+ depends on ARCH_OMAP && MMC
+ select TPS65010 if MACH_OMAP_H2
+ help
+ This selects the TI OMAP Multimedia card Interface.
+ If you have an OMAP board with a Multimedia Card slot,
+ say Y or M here.
+
+ If unsure, say N.
+
+config MMC_WBSD
+ tristate "Winbond W83L51xD SD/MMC Card Interface support"
+ depends on MMC && ISA_DMA_API
+ help
+ This selects the Winbond(R) W83L51xD Secure digital and
+ Multimedia card Interface.
+ If you have a machine with a integrated W83L518D or W83L519D
+ SD/MMC card reader, say Y or M here.
+
+ If unsure, say N.
+
+config MMC_AU1X
+ tristate "Alchemy AU1XX0 MMC Card Interface support"
+ depends on MMC && SOC_AU1200
+ help
+ This selects the AMD Alchemy(R) Multimedia card interface.
+ If you have a Alchemy platform with a MMC slot, say Y or M here.
+
+ If unsure, say N.
+
+config MMC_AT91
+ tristate "AT91 SD/MMC Card Interface support"
+ depends on ARCH_AT91 && MMC
+ help
+ This selects the AT91 MCI controller.
+
+ If unsure, say N.
+
+config MMC_IMX
+ tristate "Motorola i.MX Multimedia Card Interface support"
+ depends on ARCH_IMX && MMC
+ help
+ This selects the Motorola i.MX Multimedia card Interface.
+ If you have a i.MX platform with a Multimedia Card slot,
+ say Y or M here.
+
+ If unsure, say N.
+
+config MMC_TIFM_SD
+ tristate "TI Flash Media MMC/SD Interface support (EXPERIMENTAL)"
+ depends on MMC && EXPERIMENTAL && PCI
+ select TIFM_CORE
+ help
+ Say Y here if you want to be able to access MMC/SD cards with
+ the Texas Instruments(R) Flash Media card reader, found in many
+ laptops.
+ This option 'selects' (turns on, enables) 'TIFM_CORE', but you
+ probably also need appropriate card reader host adapter, such as
+ 'Misc devices: TI Flash Media PCI74xx/PCI76xx host adapter support
+ (TIFM_7XX1)'.
+
+ To compile this driver as a module, choose M here: the
+ module will be called tifm_sd.
+
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
new file mode 100644
index 0000000..6685f64
--- /dev/null
+++ b/drivers/mmc/host/Makefile
@@ -0,0 +1,18 @@
+#
+# Makefile for MMC/SD host controller drivers
+#
+
+ifeq ($(CONFIG_MMC_DEBUG),y)
+ EXTRA_CFLAGS += -DDEBUG
+endif
+
+obj-$(CONFIG_MMC_ARMMMCI) += mmci.o
+obj-$(CONFIG_MMC_PXA) += pxamci.o
+obj-$(CONFIG_MMC_IMX) += imxmmc.o
+obj-$(CONFIG_MMC_SDHCI) += sdhci.o
+obj-$(CONFIG_MMC_WBSD) += wbsd.o
+obj-$(CONFIG_MMC_AU1X) += au1xmmc.o
+obj-$(CONFIG_MMC_OMAP) += omap.o
+obj-$(CONFIG_MMC_AT91) += at91_mci.o
+obj-$(CONFIG_MMC_TIFM_SD) += tifm_sd.o
+
diff --git a/drivers/mmc/at91_mci.c b/drivers/mmc/host/at91_mci.c
similarity index 99%
rename from drivers/mmc/at91_mci.c
rename to drivers/mmc/host/at91_mci.c
index 459f4b4fe..e37943c 100644
--- a/drivers/mmc/at91_mci.c
+++ b/drivers/mmc/host/at91_mci.c
@@ -67,7 +67,6 @@
#include <linux/atmel_pdc.h>
#include <linux/mmc/host.h>
-#include <linux/mmc/protocol.h>
#include <asm/io.h>
#include <asm/irq.h>
diff --git a/drivers/mmc/au1xmmc.c b/drivers/mmc/host/au1xmmc.c
similarity index 99%
rename from drivers/mmc/au1xmmc.c
rename to drivers/mmc/host/au1xmmc.c
index b834be2..b7156a4 100644
--- a/drivers/mmc/au1xmmc.c
+++ b/drivers/mmc/host/au1xmmc.c
@@ -42,7 +42,6 @@
#include <linux/dma-mapping.h>
#include <linux/mmc/host.h>
-#include <linux/mmc/protocol.h>
#include <asm/io.h>
#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-au1x00/au1xxx_dbdma.h>
diff --git a/drivers/mmc/au1xmmc.h b/drivers/mmc/host/au1xmmc.h
similarity index 100%
rename from drivers/mmc/au1xmmc.h
rename to drivers/mmc/host/au1xmmc.h
diff --git a/drivers/mmc/imxmmc.c b/drivers/mmc/host/imxmmc.c
similarity index 99%
rename from drivers/mmc/imxmmc.c
rename to drivers/mmc/host/imxmmc.c
index 0de5c9e..7ee2045 100644
--- a/drivers/mmc/imxmmc.c
+++ b/drivers/mmc/host/imxmmc.c
@@ -41,7 +41,6 @@
#include <linux/dma-mapping.h>
#include <linux/mmc/host.h>
#include <linux/mmc/card.h>
-#include <linux/mmc/protocol.h>
#include <linux/delay.h>
#include <asm/dma.h>
diff --git a/drivers/mmc/imxmmc.h b/drivers/mmc/host/imxmmc.h
similarity index 100%
rename from drivers/mmc/imxmmc.h
rename to drivers/mmc/host/imxmmc.h
diff --git a/drivers/mmc/mmci.c b/drivers/mmc/host/mmci.c
similarity index 99%
rename from drivers/mmc/mmci.c
rename to drivers/mmc/host/mmci.c
index 5941dd9..d11c2d2 100644
--- a/drivers/mmc/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -17,7 +17,6 @@
#include <linux/err.h>
#include <linux/highmem.h>
#include <linux/mmc/host.h>
-#include <linux/mmc/protocol.h>
#include <linux/amba/bus.h>
#include <linux/clk.h>
diff --git a/drivers/mmc/mmci.h b/drivers/mmc/host/mmci.h
similarity index 100%
rename from drivers/mmc/mmci.h
rename to drivers/mmc/host/mmci.h
diff --git a/drivers/mmc/omap.c b/drivers/mmc/host/omap.c
similarity index 97%
rename from drivers/mmc/omap.c
rename to drivers/mmc/host/omap.c
index 1e96a2f..1914e65 100644
--- a/drivers/mmc/omap.c
+++ b/drivers/mmc/host/omap.c
@@ -22,7 +22,6 @@
#include <linux/spinlock.h>
#include <linux/timer.h>
#include <linux/mmc/host.h>
-#include <linux/mmc/protocol.h>
#include <linux/mmc/card.h>
#include <linux/clk.h>
@@ -605,7 +604,7 @@
}
if (mmc_omap_cover_is_open(host)) {
if (!complained) {
- dev_info(mmc_dev(host->mmc), "cover is open");
+ dev_info(mmc_dev(host->mmc), "cover is open\n");
complained = 1;
}
if (mmc_omap_enable_poll)
@@ -937,48 +936,55 @@
}
}
+static int mmc_omap_calc_divisor(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+ struct mmc_omap_host *host = mmc_priv(mmc);
+ int func_clk_rate = clk_get_rate(host->fclk);
+ int dsor;
+
+ if (ios->clock == 0)
+ return 0;
+
+ dsor = func_clk_rate / ios->clock;
+ if (dsor < 1)
+ dsor = 1;
+
+ if (func_clk_rate / dsor > ios->clock)
+ dsor++;
+
+ if (dsor > 250)
+ dsor = 250;
+ dsor++;
+
+ if (ios->bus_width == MMC_BUS_WIDTH_4)
+ dsor |= 1 << 15;
+
+ return dsor;
+}
+
static void mmc_omap_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
{
struct mmc_omap_host *host = mmc_priv(mmc);
int dsor;
- int realclock, i;
+ int i;
- realclock = ios->clock;
-
- if (ios->clock == 0)
- dsor = 0;
- else {
- int func_clk_rate = clk_get_rate(host->fclk);
-
- dsor = func_clk_rate / realclock;
- if (dsor < 1)
- dsor = 1;
-
- if (func_clk_rate / dsor > realclock)
- dsor++;
-
- if (dsor > 250)
- dsor = 250;
- dsor++;
-
- if (ios->bus_width == MMC_BUS_WIDTH_4)
- dsor |= 1 << 15;
- }
+ dsor = mmc_omap_calc_divisor(mmc, ios);
+ host->bus_mode = ios->bus_mode;
+ host->hw_bus_mode = host->bus_mode;
switch (ios->power_mode) {
case MMC_POWER_OFF:
mmc_omap_power(host, 0);
break;
case MMC_POWER_UP:
- case MMC_POWER_ON:
+ /* Cannot touch dsor yet, just power up MMC */
mmc_omap_power(host, 1);
+ return;
+ case MMC_POWER_ON:
dsor |= 1 << 11;
break;
}
- host->bus_mode = ios->bus_mode;
- host->hw_bus_mode = host->bus_mode;
-
clk_enable(host->fclk);
/* On insanely high arm_per frequencies something sometimes
@@ -987,7 +993,7 @@
* Writing to the CON register twice seems to do the trick. */
for (i = 0; i < 2; i++)
OMAP_MMC_WRITE(host, CON, dsor);
- if (ios->power_mode == MMC_POWER_UP) {
+ if (ios->power_mode == MMC_POWER_ON) {
/* Send clock cycles, poll completion */
OMAP_MMC_WRITE(host, IE, 0);
OMAP_MMC_WRITE(host, STAT, 0xffff);
diff --git a/drivers/mmc/pxamci.c b/drivers/mmc/host/pxamci.c
similarity index 99%
rename from drivers/mmc/pxamci.c
rename to drivers/mmc/host/pxamci.c
index 9774fc6..a98ff98 100644
--- a/drivers/mmc/pxamci.c
+++ b/drivers/mmc/host/pxamci.c
@@ -24,7 +24,6 @@
#include <linux/interrupt.h>
#include <linux/dma-mapping.h>
#include <linux/mmc/host.h>
-#include <linux/mmc/protocol.h>
#include <asm/dma.h>
#include <asm/io.h>
diff --git a/drivers/mmc/pxamci.h b/drivers/mmc/host/pxamci.h
similarity index 100%
rename from drivers/mmc/pxamci.h
rename to drivers/mmc/host/pxamci.h
diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/host/sdhci.c
similarity index 97%
rename from drivers/mmc/sdhci.c
rename to drivers/mmc/host/sdhci.c
index d749f08..ff5bf73 100644
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1,7 +1,7 @@
/*
* linux/drivers/mmc/sdhci.c - Secure Digital Host Controller Interface driver
*
- * Copyright (C) 2005-2006 Pierre Ossman, All Rights Reserved.
+ * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -15,7 +15,6 @@
#include <linux/dma-mapping.h>
#include <linux/mmc/host.h>
-#include <linux/mmc/protocol.h>
#include <asm/scatterlist.h>
@@ -247,14 +246,13 @@
chunk_remain = min(blksize, 4);
}
- size = min(host->size, host->remain);
- size = min(size, chunk_remain);
+ size = min(host->remain, chunk_remain);
chunk_remain -= size;
blksize -= size;
host->offset += size;
host->remain -= size;
- host->size -= size;
+
while (size) {
*buffer = data & 0xFF;
buffer++;
@@ -289,14 +287,13 @@
buffer = sdhci_sg_to_buffer(host) + host->offset;
while (blksize) {
- size = min(host->size, host->remain);
- size = min(size, chunk_remain);
+ size = min(host->remain, chunk_remain);
chunk_remain -= size;
blksize -= size;
host->offset += size;
host->remain -= size;
- host->size -= size;
+
while (size) {
data >>= 8;
data |= (u32)*buffer << 24;
@@ -325,7 +322,7 @@
BUG_ON(!host->data);
- if (host->size == 0)
+ if (host->num_sg == 0)
return;
if (host->data->flags & MMC_DATA_READ)
@@ -339,10 +336,8 @@
else
sdhci_write_block_pio(host);
- if (host->size == 0)
+ if (host->num_sg == 0)
break;
-
- BUG_ON(host->num_sg == 0);
}
DBG("PIO transfer complete.\n");
@@ -408,8 +403,6 @@
writel(sg_dma_address(data->sg), host->ioaddr + SDHCI_DMA_ADDRESS);
} else {
- host->size = data->blksz * data->blocks;
-
host->cur_sg = data->sg;
host->num_sg = data->sg_len;
@@ -473,10 +466,6 @@
"though there were blocks left.\n",
mmc_hostname(host->mmc));
data->error = MMC_ERR_FAILED;
- } else if (host->size != 0) {
- printk(KERN_ERR "%s: %d bytes were left untransferred.\n",
- mmc_hostname(host->mmc), host->size);
- data->error = MMC_ERR_FAILED;
}
DBG("Ending data transfer (%d bytes)\n", data->bytes_xfered);
@@ -669,20 +658,16 @@
pwr = SDHCI_POWER_ON;
- switch (power) {
- case MMC_VDD_170:
- case MMC_VDD_180:
- case MMC_VDD_190:
+ switch (1 << power) {
+ case MMC_VDD_165_195:
pwr |= SDHCI_POWER_180;
break;
- case MMC_VDD_290:
- case MMC_VDD_300:
- case MMC_VDD_310:
+ case MMC_VDD_29_30:
+ case MMC_VDD_30_31:
pwr |= SDHCI_POWER_300;
break;
- case MMC_VDD_320:
- case MMC_VDD_330:
- case MMC_VDD_340:
+ case MMC_VDD_32_33:
+ case MMC_VDD_33_34:
pwr |= SDHCI_POWER_330;
break;
default:
@@ -1294,7 +1279,7 @@
if (caps & SDHCI_CAN_VDD_300)
mmc->ocr_avail |= MMC_VDD_29_30|MMC_VDD_30_31;
if (caps & SDHCI_CAN_VDD_180)
- mmc->ocr_avail |= MMC_VDD_17_18|MMC_VDD_18_19;
+ mmc->ocr_avail |= MMC_VDD_165_195;
if (mmc->ocr_avail == 0) {
printk(KERN_ERR "%s: Hardware doesn't report any "
diff --git a/drivers/mmc/sdhci.h b/drivers/mmc/host/sdhci.h
similarity index 97%
rename from drivers/mmc/sdhci.h
rename to drivers/mmc/host/sdhci.h
index e324f0a..7400f4b 100644
--- a/drivers/mmc/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -1,7 +1,7 @@
/*
* linux/drivers/mmc/sdhci.h - Secure Digital Host Controller Interface driver
*
- * Copyright (C) 2005 Pierre Ossman, All Rights Reserved.
+ * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -187,8 +187,6 @@
int offset; /* Offset into current sg */
int remain; /* Bytes left in current */
- int size; /* Remaining bytes in transfer */
-
char slot_descr[20]; /* Name for reservations */
int irq; /* Device IRQ */
diff --git a/drivers/mmc/host/tifm_sd.c b/drivers/mmc/host/tifm_sd.c
new file mode 100644
index 0000000..7511f96
--- /dev/null
+++ b/drivers/mmc/host/tifm_sd.c
@@ -0,0 +1,1102 @@
+/*
+ * tifm_sd.c - TI FlashMedia driver
+ *
+ * Copyright (C) 2006 Alex Dubov <oakad@yahoo.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Special thanks to Brad Campbell for extensive testing of this driver.
+ *
+ */
+
+
+#include <linux/tifm.h>
+#include <linux/mmc/host.h>
+#include <linux/highmem.h>
+#include <linux/scatterlist.h>
+#include <asm/io.h>
+
+#define DRIVER_NAME "tifm_sd"
+#define DRIVER_VERSION "0.8"
+
+static int no_dma = 0;
+static int fixed_timeout = 0;
+module_param(no_dma, bool, 0644);
+module_param(fixed_timeout, bool, 0644);
+
+/* Constants here are mostly from OMAP5912 datasheet */
+#define TIFM_MMCSD_RESET 0x0002
+#define TIFM_MMCSD_CLKMASK 0x03ff
+#define TIFM_MMCSD_POWER 0x0800
+#define TIFM_MMCSD_4BBUS 0x8000
+#define TIFM_MMCSD_RXDE 0x8000 /* rx dma enable */
+#define TIFM_MMCSD_TXDE 0x0080 /* tx dma enable */
+#define TIFM_MMCSD_BUFINT 0x0c00 /* set bits: AE, AF */
+#define TIFM_MMCSD_DPE 0x0020 /* data timeout counted in kilocycles */
+#define TIFM_MMCSD_INAB 0x0080 /* abort / initialize command */
+#define TIFM_MMCSD_READ 0x8000
+
+#define TIFM_MMCSD_ERRMASK 0x01e0 /* set bits: CCRC, CTO, DCRC, DTO */
+#define TIFM_MMCSD_EOC 0x0001 /* end of command phase */
+#define TIFM_MMCSD_CD 0x0002 /* card detect */
+#define TIFM_MMCSD_CB 0x0004 /* card enter busy state */
+#define TIFM_MMCSD_BRS 0x0008 /* block received/sent */
+#define TIFM_MMCSD_EOFB 0x0010 /* card exit busy state */
+#define TIFM_MMCSD_DTO 0x0020 /* data time-out */
+#define TIFM_MMCSD_DCRC 0x0040 /* data crc error */
+#define TIFM_MMCSD_CTO 0x0080 /* command time-out */
+#define TIFM_MMCSD_CCRC 0x0100 /* command crc error */
+#define TIFM_MMCSD_AF 0x0400 /* fifo almost full */
+#define TIFM_MMCSD_AE 0x0800 /* fifo almost empty */
+#define TIFM_MMCSD_OCRB 0x1000 /* OCR busy */
+#define TIFM_MMCSD_CIRQ 0x2000 /* card irq (cmd40/sdio) */
+#define TIFM_MMCSD_CERR 0x4000 /* card status error */
+
+#define TIFM_MMCSD_ODTO 0x0040 /* open drain / extended timeout */
+#define TIFM_MMCSD_CARD_RO 0x0200 /* card is read-only */
+
+#define TIFM_MMCSD_FIFO_SIZE 0x0020
+
+#define TIFM_MMCSD_RSP_R0 0x0000
+#define TIFM_MMCSD_RSP_R1 0x0100
+#define TIFM_MMCSD_RSP_R2 0x0200
+#define TIFM_MMCSD_RSP_R3 0x0300
+#define TIFM_MMCSD_RSP_R4 0x0400
+#define TIFM_MMCSD_RSP_R5 0x0500
+#define TIFM_MMCSD_RSP_R6 0x0600
+
+#define TIFM_MMCSD_RSP_BUSY 0x0800
+
+#define TIFM_MMCSD_CMD_BC 0x0000
+#define TIFM_MMCSD_CMD_BCR 0x1000
+#define TIFM_MMCSD_CMD_AC 0x2000
+#define TIFM_MMCSD_CMD_ADTC 0x3000
+
+#define TIFM_MMCSD_MAX_BLOCK_SIZE 0x0800UL
+
+enum {
+ CMD_READY = 0x0001,
+ FIFO_READY = 0x0002,
+ BRS_READY = 0x0004,
+ SCMD_ACTIVE = 0x0008,
+ SCMD_READY = 0x0010,
+ CARD_BUSY = 0x0020,
+ DATA_CARRY = 0x0040
+};
+
+struct tifm_sd {
+ struct tifm_dev *dev;
+
+ unsigned short eject:1,
+ open_drain:1,
+ no_dma:1;
+ unsigned short cmd_flags;
+
+ unsigned int clk_freq;
+ unsigned int clk_div;
+ unsigned long timeout_jiffies;
+
+ struct tasklet_struct finish_tasklet;
+ struct timer_list timer;
+ struct mmc_request *req;
+
+ int sg_len;
+ int sg_pos;
+ unsigned int block_pos;
+ struct scatterlist bounce_buf;
+ unsigned char bounce_buf_data[TIFM_MMCSD_MAX_BLOCK_SIZE];
+};
+
+/* for some reason, host won't respond correctly to readw/writew */
+static void tifm_sd_read_fifo(struct tifm_sd *host, struct page *pg,
+ unsigned int off, unsigned int cnt)
+{
+ struct tifm_dev *sock = host->dev;
+ unsigned char *buf;
+ unsigned int pos = 0, val;
+
+ buf = kmap_atomic(pg, KM_BIO_DST_IRQ) + off;
+ if (host->cmd_flags & DATA_CARRY) {
+ buf[pos++] = host->bounce_buf_data[0];
+ host->cmd_flags &= ~DATA_CARRY;
+ }
+
+ while (pos < cnt) {
+ val = readl(sock->addr + SOCK_MMCSD_DATA);
+ buf[pos++] = val & 0xff;
+ if (pos == cnt) {
+ host->bounce_buf_data[0] = (val >> 8) & 0xff;
+ host->cmd_flags |= DATA_CARRY;
+ break;
+ }
+ buf[pos++] = (val >> 8) & 0xff;
+ }
+ kunmap_atomic(buf - off, KM_BIO_DST_IRQ);
+}
+
+static void tifm_sd_write_fifo(struct tifm_sd *host, struct page *pg,
+ unsigned int off, unsigned int cnt)
+{
+ struct tifm_dev *sock = host->dev;
+ unsigned char *buf;
+ unsigned int pos = 0, val;
+
+ buf = kmap_atomic(pg, KM_BIO_SRC_IRQ) + off;
+ if (host->cmd_flags & DATA_CARRY) {
+ val = host->bounce_buf_data[0] | ((buf[pos++] << 8) & 0xff00);
+ writel(val, sock->addr + SOCK_MMCSD_DATA);
+ host->cmd_flags &= ~DATA_CARRY;
+ }
+
+ while (pos < cnt) {
+ val = buf[pos++];
+ if (pos == cnt) {
+ host->bounce_buf_data[0] = val & 0xff;
+ host->cmd_flags |= DATA_CARRY;
+ break;
+ }
+ val |= (buf[pos++] << 8) & 0xff00;
+ writel(val, sock->addr + SOCK_MMCSD_DATA);
+ }
+ kunmap_atomic(buf - off, KM_BIO_SRC_IRQ);
+}
+
+static void tifm_sd_transfer_data(struct tifm_sd *host)
+{
+ struct mmc_data *r_data = host->req->cmd->data;
+ struct scatterlist *sg = r_data->sg;
+ unsigned int off, cnt, t_size = TIFM_MMCSD_FIFO_SIZE * 2;
+ unsigned int p_off, p_cnt;
+ struct page *pg;
+
+ if (host->sg_pos == host->sg_len)
+ return;
+ while (t_size) {
+ cnt = sg[host->sg_pos].length - host->block_pos;
+ if (!cnt) {
+ host->block_pos = 0;
+ host->sg_pos++;
+ if (host->sg_pos == host->sg_len) {
+ if ((r_data->flags & MMC_DATA_WRITE)
+ && DATA_CARRY)
+ writel(host->bounce_buf_data[0],
+ host->dev->addr
+ + SOCK_MMCSD_DATA);
+
+ return;
+ }
+ cnt = sg[host->sg_pos].length;
+ }
+ off = sg[host->sg_pos].offset + host->block_pos;
+
+ pg = nth_page(sg[host->sg_pos].page, off >> PAGE_SHIFT);
+ p_off = offset_in_page(off);
+ p_cnt = PAGE_SIZE - p_off;
+ p_cnt = min(p_cnt, cnt);
+ p_cnt = min(p_cnt, t_size);
+
+ if (r_data->flags & MMC_DATA_READ)
+ tifm_sd_read_fifo(host, pg, p_off, p_cnt);
+ else if (r_data->flags & MMC_DATA_WRITE)
+ tifm_sd_write_fifo(host, pg, p_off, p_cnt);
+
+ t_size -= p_cnt;
+ host->block_pos += p_cnt;
+ }
+}
+
+static void tifm_sd_copy_page(struct page *dst, unsigned int dst_off,
+ struct page *src, unsigned int src_off,
+ unsigned int count)
+{
+ unsigned char *src_buf = kmap_atomic(src, KM_BIO_SRC_IRQ) + src_off;
+ unsigned char *dst_buf = kmap_atomic(dst, KM_BIO_DST_IRQ) + dst_off;
+
+ memcpy(dst_buf, src_buf, count);
+
+ kunmap_atomic(dst_buf - dst_off, KM_BIO_DST_IRQ);
+ kunmap_atomic(src_buf - src_off, KM_BIO_SRC_IRQ);
+}
+
+static void tifm_sd_bounce_block(struct tifm_sd *host, struct mmc_data *r_data)
+{
+ struct scatterlist *sg = r_data->sg;
+ unsigned int t_size = r_data->blksz;
+ unsigned int off, cnt;
+ unsigned int p_off, p_cnt;
+ struct page *pg;
+
+ dev_dbg(&host->dev->dev, "bouncing block\n");
+ while (t_size) {
+ cnt = sg[host->sg_pos].length - host->block_pos;
+ if (!cnt) {
+ host->block_pos = 0;
+ host->sg_pos++;
+ if (host->sg_pos == host->sg_len)
+ return;
+ cnt = sg[host->sg_pos].length;
+ }
+ off = sg[host->sg_pos].offset + host->block_pos;
+
+ pg = nth_page(sg[host->sg_pos].page, off >> PAGE_SHIFT);
+ p_off = offset_in_page(off);
+ p_cnt = PAGE_SIZE - p_off;
+ p_cnt = min(p_cnt, cnt);
+ p_cnt = min(p_cnt, t_size);
+
+ if (r_data->flags & MMC_DATA_WRITE)
+ tifm_sd_copy_page(host->bounce_buf.page,
+ r_data->blksz - t_size,
+ pg, p_off, p_cnt);
+ else if (r_data->flags & MMC_DATA_READ)
+ tifm_sd_copy_page(pg, p_off, host->bounce_buf.page,
+ r_data->blksz - t_size, p_cnt);
+
+ t_size -= p_cnt;
+ host->block_pos += p_cnt;
+ }
+}
+
+static int tifm_sd_set_dma_data(struct tifm_sd *host, struct mmc_data *r_data)
+{
+ struct tifm_dev *sock = host->dev;
+ unsigned int t_size = TIFM_DMA_TSIZE * r_data->blksz;
+ unsigned int dma_len, dma_blk_cnt, dma_off;
+ struct scatterlist *sg = NULL;
+ unsigned long flags;
+
+ if (host->sg_pos == host->sg_len)
+ return 1;
+
+ if (host->cmd_flags & DATA_CARRY) {
+ host->cmd_flags &= ~DATA_CARRY;
+ local_irq_save(flags);
+ tifm_sd_bounce_block(host, r_data);
+ local_irq_restore(flags);
+ if (host->sg_pos == host->sg_len)
+ return 1;
+ }
+
+ dma_len = sg_dma_len(&r_data->sg[host->sg_pos]) - host->block_pos;
+ if (!dma_len) {
+ host->block_pos = 0;
+ host->sg_pos++;
+ if (host->sg_pos == host->sg_len)
+ return 1;
+ dma_len = sg_dma_len(&r_data->sg[host->sg_pos]);
+ }
+
+ if (dma_len < t_size) {
+ dma_blk_cnt = dma_len / r_data->blksz;
+ dma_off = host->block_pos;
+ host->block_pos += dma_blk_cnt * r_data->blksz;
+ } else {
+ dma_blk_cnt = TIFM_DMA_TSIZE;
+ dma_off = host->block_pos;
+ host->block_pos += t_size;
+ }
+
+ if (dma_blk_cnt)
+ sg = &r_data->sg[host->sg_pos];
+ else if (dma_len) {
+ if (r_data->flags & MMC_DATA_WRITE) {
+ local_irq_save(flags);
+ tifm_sd_bounce_block(host, r_data);
+ local_irq_restore(flags);
+ } else
+ host->cmd_flags |= DATA_CARRY;
+
+ sg = &host->bounce_buf;
+ dma_off = 0;
+ dma_blk_cnt = 1;
+ } else
+ return 1;
+
+ dev_dbg(&sock->dev, "setting dma for %d blocks\n", dma_blk_cnt);
+ writel(sg_dma_address(sg) + dma_off, sock->addr + SOCK_DMA_ADDRESS);
+ if (r_data->flags & MMC_DATA_WRITE)
+ writel((dma_blk_cnt << 8) | TIFM_DMA_TX | TIFM_DMA_EN,
+ sock->addr + SOCK_DMA_CONTROL);
+ else
+ writel((dma_blk_cnt << 8) | TIFM_DMA_EN,
+ sock->addr + SOCK_DMA_CONTROL);
+
+ return 0;
+}
+
+static unsigned int tifm_sd_op_flags(struct mmc_command *cmd)
+{
+ unsigned int rc = 0;
+
+ switch (mmc_resp_type(cmd)) {
+ case MMC_RSP_NONE:
+ rc |= TIFM_MMCSD_RSP_R0;
+ break;
+ case MMC_RSP_R1B:
+ rc |= TIFM_MMCSD_RSP_BUSY; // deliberate fall-through
+ case MMC_RSP_R1:
+ rc |= TIFM_MMCSD_RSP_R1;
+ break;
+ case MMC_RSP_R2:
+ rc |= TIFM_MMCSD_RSP_R2;
+ break;
+ case MMC_RSP_R3:
+ rc |= TIFM_MMCSD_RSP_R3;
+ break;
+ default:
+ BUG();
+ }
+
+ switch (mmc_cmd_type(cmd)) {
+ case MMC_CMD_BC:
+ rc |= TIFM_MMCSD_CMD_BC;
+ break;
+ case MMC_CMD_BCR:
+ rc |= TIFM_MMCSD_CMD_BCR;
+ break;
+ case MMC_CMD_AC:
+ rc |= TIFM_MMCSD_CMD_AC;
+ break;
+ case MMC_CMD_ADTC:
+ rc |= TIFM_MMCSD_CMD_ADTC;
+ break;
+ default:
+ BUG();
+ }
+ return rc;
+}
+
+static void tifm_sd_exec(struct tifm_sd *host, struct mmc_command *cmd)
+{
+ struct tifm_dev *sock = host->dev;
+ unsigned int cmd_mask = tifm_sd_op_flags(cmd);
+
+ if (host->open_drain)
+ cmd_mask |= TIFM_MMCSD_ODTO;
+
+ if (cmd->data && (cmd->data->flags & MMC_DATA_READ))
+ cmd_mask |= TIFM_MMCSD_READ;
+
+ dev_dbg(&sock->dev, "executing opcode 0x%x, arg: 0x%x, mask: 0x%x\n",
+ cmd->opcode, cmd->arg, cmd_mask);
+
+ writel((cmd->arg >> 16) & 0xffff, sock->addr + SOCK_MMCSD_ARG_HIGH);
+ writel(cmd->arg & 0xffff, sock->addr + SOCK_MMCSD_ARG_LOW);
+ writel(cmd->opcode | cmd_mask, sock->addr + SOCK_MMCSD_COMMAND);
+}
+
+static void tifm_sd_fetch_resp(struct mmc_command *cmd, struct tifm_dev *sock)
+{
+ cmd->resp[0] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x1c) << 16)
+ | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x18);
+ cmd->resp[1] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x14) << 16)
+ | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x10);
+ cmd->resp[2] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x0c) << 16)
+ | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x08);
+ cmd->resp[3] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x04) << 16)
+ | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x00);
+}
+
+static void tifm_sd_check_status(struct tifm_sd *host)
+{
+ struct tifm_dev *sock = host->dev;
+ struct mmc_command *cmd = host->req->cmd;
+
+ if (cmd->error != MMC_ERR_NONE)
+ goto finish_request;
+
+ if (!(host->cmd_flags & CMD_READY))
+ return;
+
+ if (cmd->data) {
+ if (cmd->data->error != MMC_ERR_NONE) {
+ if ((host->cmd_flags & SCMD_ACTIVE)
+ && !(host->cmd_flags & SCMD_READY))
+ return;
+
+ goto finish_request;
+ }
+
+ if (!(host->cmd_flags & BRS_READY))
+ return;
+
+ if (!(host->no_dma || (host->cmd_flags & FIFO_READY)))
+ return;
+
+ if (cmd->data->flags & MMC_DATA_WRITE) {
+ if (host->req->stop) {
+ if (!(host->cmd_flags & SCMD_ACTIVE)) {
+ host->cmd_flags |= SCMD_ACTIVE;
+ writel(TIFM_MMCSD_EOFB
+ | readl(sock->addr
+ + SOCK_MMCSD_INT_ENABLE),
+ sock->addr
+ + SOCK_MMCSD_INT_ENABLE);
+ tifm_sd_exec(host, host->req->stop);
+ return;
+ } else {
+ if (!(host->cmd_flags & SCMD_READY)
+ || (host->cmd_flags & CARD_BUSY))
+ return;
+ writel((~TIFM_MMCSD_EOFB)
+ & readl(sock->addr
+ + SOCK_MMCSD_INT_ENABLE),
+ sock->addr
+ + SOCK_MMCSD_INT_ENABLE);
+ }
+ } else {
+ if (host->cmd_flags & CARD_BUSY)
+ return;
+ writel((~TIFM_MMCSD_EOFB)
+ & readl(sock->addr
+ + SOCK_MMCSD_INT_ENABLE),
+ sock->addr + SOCK_MMCSD_INT_ENABLE);
+ }
+ } else {
+ if (host->req->stop) {
+ if (!(host->cmd_flags & SCMD_ACTIVE)) {
+ host->cmd_flags |= SCMD_ACTIVE;
+ tifm_sd_exec(host, host->req->stop);
+ return;
+ } else {
+ if (!(host->cmd_flags & SCMD_READY))
+ return;
+ }
+ }
+ }
+ }
+finish_request:
+ tasklet_schedule(&host->finish_tasklet);
+}
+
+/* Called from interrupt handler */
+static void tifm_sd_data_event(struct tifm_dev *sock)
+{
+ struct tifm_sd *host;
+ unsigned int fifo_status = 0;
+ struct mmc_data *r_data = NULL;
+
+ spin_lock(&sock->lock);
+ host = mmc_priv((struct mmc_host*)tifm_get_drvdata(sock));
+ fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS);
+ dev_dbg(&sock->dev, "data event: fifo_status %x, flags %x\n",
+ fifo_status, host->cmd_flags);
+
+ if (host->req) {
+ r_data = host->req->cmd->data;
+
+ if (r_data && (fifo_status & TIFM_FIFO_READY)) {
+ if (tifm_sd_set_dma_data(host, r_data)) {
+ host->cmd_flags |= FIFO_READY;
+ tifm_sd_check_status(host);
+ }
+ }
+ }
+
+ writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS);
+ spin_unlock(&sock->lock);
+}
+
+/* Called from interrupt handler */
+static void tifm_sd_card_event(struct tifm_dev *sock)
+{
+ struct tifm_sd *host;
+ unsigned int host_status = 0;
+ int cmd_error = MMC_ERR_NONE;
+ struct mmc_command *cmd = NULL;
+ unsigned long flags;
+
+ spin_lock(&sock->lock);
+ host = mmc_priv((struct mmc_host*)tifm_get_drvdata(sock));
+ host_status = readl(sock->addr + SOCK_MMCSD_STATUS);
+ dev_dbg(&sock->dev, "host event: host_status %x, flags %x\n",
+ host_status, host->cmd_flags);
+
+ if (host->req) {
+ cmd = host->req->cmd;
+
+ if (host_status & TIFM_MMCSD_ERRMASK) {
+ writel(host_status & TIFM_MMCSD_ERRMASK,
+ sock->addr + SOCK_MMCSD_STATUS);
+ if (host_status & TIFM_MMCSD_CTO)
+ cmd_error = MMC_ERR_TIMEOUT;
+ else if (host_status & TIFM_MMCSD_CCRC)
+ cmd_error = MMC_ERR_BADCRC;
+
+ if (cmd->data) {
+ if (host_status & TIFM_MMCSD_DTO)
+ cmd->data->error = MMC_ERR_TIMEOUT;
+ else if (host_status & TIFM_MMCSD_DCRC)
+ cmd->data->error = MMC_ERR_BADCRC;
+ }
+
+ writel(TIFM_FIFO_INT_SETALL,
+ sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
+ writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
+
+ if (host->req->stop) {
+ if (host->cmd_flags & SCMD_ACTIVE) {
+ host->req->stop->error = cmd_error;
+ host->cmd_flags |= SCMD_READY;
+ } else {
+ cmd->error = cmd_error;
+ host->cmd_flags |= SCMD_ACTIVE;
+ tifm_sd_exec(host, host->req->stop);
+ goto done;
+ }
+ } else
+ cmd->error = cmd_error;
+ } else {
+ if (host_status & (TIFM_MMCSD_EOC | TIFM_MMCSD_CERR)) {
+ if (!(host->cmd_flags & CMD_READY)) {
+ host->cmd_flags |= CMD_READY;
+ tifm_sd_fetch_resp(cmd, sock);
+ } else if (host->cmd_flags & SCMD_ACTIVE) {
+ host->cmd_flags |= SCMD_READY;
+ tifm_sd_fetch_resp(host->req->stop,
+ sock);
+ }
+ }
+ if (host_status & TIFM_MMCSD_BRS)
+ host->cmd_flags |= BRS_READY;
+ }
+
+ if (host->no_dma && cmd->data) {
+ if (host_status & TIFM_MMCSD_AE)
+ writel(host_status & TIFM_MMCSD_AE,
+ sock->addr + SOCK_MMCSD_STATUS);
+
+ if (host_status & (TIFM_MMCSD_AE | TIFM_MMCSD_AF
+ | TIFM_MMCSD_BRS)) {
+ local_irq_save(flags);
+ tifm_sd_transfer_data(host);
+ local_irq_restore(flags);
+ host_status &= ~TIFM_MMCSD_AE;
+ }
+ }
+
+ if (host_status & TIFM_MMCSD_EOFB)
+ host->cmd_flags &= ~CARD_BUSY;
+ else if (host_status & TIFM_MMCSD_CB)
+ host->cmd_flags |= CARD_BUSY;
+
+ tifm_sd_check_status(host);
+ }
+done:
+ writel(host_status, sock->addr + SOCK_MMCSD_STATUS);
+ spin_unlock(&sock->lock);
+}
+
+static void tifm_sd_set_data_timeout(struct tifm_sd *host,
+ struct mmc_data *data)
+{
+ struct tifm_dev *sock = host->dev;
+ unsigned int data_timeout = data->timeout_clks;
+
+ if (fixed_timeout)
+ return;
+
+ data_timeout += data->timeout_ns /
+ ((1000000000UL / host->clk_freq) * host->clk_div);
+
+ if (data_timeout < 0xffff) {
+ writel(data_timeout, sock->addr + SOCK_MMCSD_DATA_TO);
+ writel((~TIFM_MMCSD_DPE)
+ & readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG),
+ sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG);
+ } else {
+ data_timeout = (data_timeout >> 10) + 1;
+ if (data_timeout > 0xffff)
+ data_timeout = 0; /* set to unlimited */
+ writel(data_timeout, sock->addr + SOCK_MMCSD_DATA_TO);
+ writel(TIFM_MMCSD_DPE
+ | readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG),
+ sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG);
+ }
+}
+
+static void tifm_sd_request(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+ struct tifm_sd *host = mmc_priv(mmc);
+ struct tifm_dev *sock = host->dev;
+ unsigned long flags;
+ struct mmc_data *r_data = mrq->cmd->data;
+
+ spin_lock_irqsave(&sock->lock, flags);
+ if (host->eject) {
+ spin_unlock_irqrestore(&sock->lock, flags);
+ goto err_out;
+ }
+
+ if (host->req) {
+ printk(KERN_ERR "%s : unfinished request detected\n",
+ sock->dev.bus_id);
+ spin_unlock_irqrestore(&sock->lock, flags);
+ goto err_out;
+ }
+
+ host->cmd_flags = 0;
+ host->block_pos = 0;
+ host->sg_pos = 0;
+
+ if (r_data) {
+ tifm_sd_set_data_timeout(host, r_data);
+
+ if ((r_data->flags & MMC_DATA_WRITE) && !mrq->stop)
+ writel(TIFM_MMCSD_EOFB
+ | readl(sock->addr + SOCK_MMCSD_INT_ENABLE),
+ sock->addr + SOCK_MMCSD_INT_ENABLE);
+
+ if (host->no_dma) {
+ writel(TIFM_MMCSD_BUFINT
+ | readl(sock->addr + SOCK_MMCSD_INT_ENABLE),
+ sock->addr + SOCK_MMCSD_INT_ENABLE);
+ writel(((TIFM_MMCSD_FIFO_SIZE - 1) << 8)
+ | (TIFM_MMCSD_FIFO_SIZE - 1),
+ sock->addr + SOCK_MMCSD_BUFFER_CONFIG);
+
+ host->sg_len = r_data->sg_len;
+ } else {
+ sg_init_one(&host->bounce_buf, host->bounce_buf_data,
+ r_data->blksz);
+
+ if(1 != tifm_map_sg(sock, &host->bounce_buf, 1,
+ r_data->flags & MMC_DATA_WRITE
+ ? PCI_DMA_TODEVICE
+ : PCI_DMA_FROMDEVICE)) {
+ printk(KERN_ERR "%s : scatterlist map failed\n",
+ sock->dev.bus_id);
+ spin_unlock_irqrestore(&sock->lock, flags);
+ goto err_out;
+ }
+ host->sg_len = tifm_map_sg(sock, r_data->sg,
+ r_data->sg_len,
+ r_data->flags
+ & MMC_DATA_WRITE
+ ? PCI_DMA_TODEVICE
+ : PCI_DMA_FROMDEVICE);
+ if (host->sg_len < 1) {
+ printk(KERN_ERR "%s : scatterlist map failed\n",
+ sock->dev.bus_id);
+ tifm_unmap_sg(sock, &host->bounce_buf, 1,
+ r_data->flags & MMC_DATA_WRITE
+ ? PCI_DMA_TODEVICE
+ : PCI_DMA_FROMDEVICE);
+ spin_unlock_irqrestore(&sock->lock, flags);
+ goto err_out;
+ }
+
+ writel(TIFM_FIFO_INT_SETALL,
+ sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
+ writel(ilog2(r_data->blksz) - 2,
+ sock->addr + SOCK_FIFO_PAGE_SIZE);
+ writel(TIFM_FIFO_ENABLE,
+ sock->addr + SOCK_FIFO_CONTROL);
+ writel(TIFM_FIFO_INTMASK,
+ sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
+
+ if (r_data->flags & MMC_DATA_WRITE)
+ writel(TIFM_MMCSD_TXDE,
+ sock->addr + SOCK_MMCSD_BUFFER_CONFIG);
+ else
+ writel(TIFM_MMCSD_RXDE,
+ sock->addr + SOCK_MMCSD_BUFFER_CONFIG);
+
+ tifm_sd_set_dma_data(host, r_data);
+ }
+
+ writel(r_data->blocks - 1,
+ sock->addr + SOCK_MMCSD_NUM_BLOCKS);
+ writel(r_data->blksz - 1,
+ sock->addr + SOCK_MMCSD_BLOCK_LEN);
+ }
+
+ host->req = mrq;
+ mod_timer(&host->timer, jiffies + host->timeout_jiffies);
+ writel(TIFM_CTRL_LED | readl(sock->addr + SOCK_CONTROL),
+ sock->addr + SOCK_CONTROL);
+ tifm_sd_exec(host, mrq->cmd);
+ spin_unlock_irqrestore(&sock->lock, flags);
+ return;
+
+err_out:
+ mrq->cmd->error = MMC_ERR_TIMEOUT;
+ mmc_request_done(mmc, mrq);
+}
+
+static void tifm_sd_end_cmd(unsigned long data)
+{
+ struct tifm_sd *host = (struct tifm_sd*)data;
+ struct tifm_dev *sock = host->dev;
+ struct mmc_host *mmc = tifm_get_drvdata(sock);
+ struct mmc_request *mrq;
+ struct mmc_data *r_data = NULL;
+ unsigned long flags;
+
+ spin_lock_irqsave(&sock->lock, flags);
+
+ del_timer(&host->timer);
+ mrq = host->req;
+ host->req = NULL;
+
+ if (!mrq) {
+ printk(KERN_ERR " %s : no request to complete?\n",
+ sock->dev.bus_id);
+ spin_unlock_irqrestore(&sock->lock, flags);
+ return;
+ }
+
+ r_data = mrq->cmd->data;
+ if (r_data) {
+ if (host->no_dma) {
+ writel((~TIFM_MMCSD_BUFINT)
+ & readl(sock->addr + SOCK_MMCSD_INT_ENABLE),
+ sock->addr + SOCK_MMCSD_INT_ENABLE);
+ } else {
+ tifm_unmap_sg(sock, &host->bounce_buf, 1,
+ (r_data->flags & MMC_DATA_WRITE)
+ ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
+ tifm_unmap_sg(sock, r_data->sg, r_data->sg_len,
+ (r_data->flags & MMC_DATA_WRITE)
+ ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
+ }
+
+ r_data->bytes_xfered = r_data->blocks
+ - readl(sock->addr + SOCK_MMCSD_NUM_BLOCKS) - 1;
+ r_data->bytes_xfered *= r_data->blksz;
+ r_data->bytes_xfered += r_data->blksz
+ - readl(sock->addr + SOCK_MMCSD_BLOCK_LEN) + 1;
+ }
+
+ writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL),
+ sock->addr + SOCK_CONTROL);
+
+ spin_unlock_irqrestore(&sock->lock, flags);
+ mmc_request_done(mmc, mrq);
+}
+
+static void tifm_sd_abort(unsigned long data)
+{
+ struct tifm_sd *host = (struct tifm_sd*)data;
+
+ printk(KERN_ERR
+ "%s : card failed to respond for a long period of time "
+ "(%x, %x)\n",
+ host->dev->dev.bus_id, host->req->cmd->opcode, host->cmd_flags);
+
+ tifm_eject(host->dev);
+}
+
+static void tifm_sd_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+ struct tifm_sd *host = mmc_priv(mmc);
+ struct tifm_dev *sock = host->dev;
+ unsigned int clk_div1, clk_div2;
+ unsigned long flags;
+
+ spin_lock_irqsave(&sock->lock, flags);
+
+ dev_dbg(&sock->dev, "ios: clock = %u, vdd = %x, bus_mode = %x, "
+ "chip_select = %x, power_mode = %x, bus_width = %x\n",
+ ios->clock, ios->vdd, ios->bus_mode, ios->chip_select,
+ ios->power_mode, ios->bus_width);
+
+ if (ios->bus_width == MMC_BUS_WIDTH_4) {
+ writel(TIFM_MMCSD_4BBUS | readl(sock->addr + SOCK_MMCSD_CONFIG),
+ sock->addr + SOCK_MMCSD_CONFIG);
+ } else {
+ writel((~TIFM_MMCSD_4BBUS)
+ & readl(sock->addr + SOCK_MMCSD_CONFIG),
+ sock->addr + SOCK_MMCSD_CONFIG);
+ }
+
+ if (ios->clock) {
+ clk_div1 = 20000000 / ios->clock;
+ if (!clk_div1)
+ clk_div1 = 1;
+
+ clk_div2 = 24000000 / ios->clock;
+ if (!clk_div2)
+ clk_div2 = 1;
+
+ if ((20000000 / clk_div1) > ios->clock)
+ clk_div1++;
+ if ((24000000 / clk_div2) > ios->clock)
+ clk_div2++;
+ if ((20000000 / clk_div1) > (24000000 / clk_div2)) {
+ host->clk_freq = 20000000;
+ host->clk_div = clk_div1;
+ writel((~TIFM_CTRL_FAST_CLK)
+ & readl(sock->addr + SOCK_CONTROL),
+ sock->addr + SOCK_CONTROL);
+ } else {
+ host->clk_freq = 24000000;
+ host->clk_div = clk_div2;
+ writel(TIFM_CTRL_FAST_CLK
+ | readl(sock->addr + SOCK_CONTROL),
+ sock->addr + SOCK_CONTROL);
+ }
+ } else {
+ host->clk_div = 0;
+ }
+ host->clk_div &= TIFM_MMCSD_CLKMASK;
+ writel(host->clk_div
+ | ((~TIFM_MMCSD_CLKMASK)
+ & readl(sock->addr + SOCK_MMCSD_CONFIG)),
+ sock->addr + SOCK_MMCSD_CONFIG);
+
+ host->open_drain = (ios->bus_mode == MMC_BUSMODE_OPENDRAIN);
+
+ /* chip_select : maybe later */
+ //vdd
+ //power is set before probe / after remove
+
+ spin_unlock_irqrestore(&sock->lock, flags);
+}
+
+static int tifm_sd_ro(struct mmc_host *mmc)
+{
+ int rc = 0;
+ struct tifm_sd *host = mmc_priv(mmc);
+ struct tifm_dev *sock = host->dev;
+ unsigned long flags;
+
+ spin_lock_irqsave(&sock->lock, flags);
+ if (TIFM_MMCSD_CARD_RO & readl(sock->addr + SOCK_PRESENT_STATE))
+ rc = 1;
+ spin_unlock_irqrestore(&sock->lock, flags);
+ return rc;
+}
+
+static const struct mmc_host_ops tifm_sd_ops = {
+ .request = tifm_sd_request,
+ .set_ios = tifm_sd_ios,
+ .get_ro = tifm_sd_ro
+};
+
+static int tifm_sd_initialize_host(struct tifm_sd *host)
+{
+ int rc;
+ unsigned int host_status = 0;
+ struct tifm_dev *sock = host->dev;
+
+ writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE);
+ mmiowb();
+ host->clk_div = 61;
+ host->clk_freq = 20000000;
+ writel(TIFM_MMCSD_RESET, sock->addr + SOCK_MMCSD_SYSTEM_CONTROL);
+ writel(host->clk_div | TIFM_MMCSD_POWER,
+ sock->addr + SOCK_MMCSD_CONFIG);
+
+ /* wait up to 0.51 sec for reset */
+ for (rc = 32; rc <= 256; rc <<= 1) {
+ if (1 & readl(sock->addr + SOCK_MMCSD_SYSTEM_STATUS)) {
+ rc = 0;
+ break;
+ }
+ msleep(rc);
+ }
+
+ if (rc) {
+ printk(KERN_ERR "%s : controller failed to reset\n",
+ sock->dev.bus_id);
+ return -ENODEV;
+ }
+
+ writel(0, sock->addr + SOCK_MMCSD_NUM_BLOCKS);
+ writel(host->clk_div | TIFM_MMCSD_POWER,
+ sock->addr + SOCK_MMCSD_CONFIG);
+ writel(TIFM_MMCSD_RXDE, sock->addr + SOCK_MMCSD_BUFFER_CONFIG);
+
+ // command timeout fixed to 64 clocks for now
+ writel(64, sock->addr + SOCK_MMCSD_COMMAND_TO);
+ writel(TIFM_MMCSD_INAB, sock->addr + SOCK_MMCSD_COMMAND);
+
+ for (rc = 16; rc <= 64; rc <<= 1) {
+ host_status = readl(sock->addr + SOCK_MMCSD_STATUS);
+ writel(host_status, sock->addr + SOCK_MMCSD_STATUS);
+ if (!(host_status & TIFM_MMCSD_ERRMASK)
+ && (host_status & TIFM_MMCSD_EOC)) {
+ rc = 0;
+ break;
+ }
+ msleep(rc);
+ }
+
+ if (rc) {
+ printk(KERN_ERR
+ "%s : card not ready - probe failed on initialization\n",
+ sock->dev.bus_id);
+ return -ENODEV;
+ }
+
+ writel(TIFM_MMCSD_CERR | TIFM_MMCSD_BRS | TIFM_MMCSD_EOC
+ | TIFM_MMCSD_ERRMASK,
+ sock->addr + SOCK_MMCSD_INT_ENABLE);
+ mmiowb();
+
+ return 0;
+}
+
+static int tifm_sd_probe(struct tifm_dev *sock)
+{
+ struct mmc_host *mmc;
+ struct tifm_sd *host;
+ int rc = -EIO;
+
+ if (!(TIFM_SOCK_STATE_OCCUPIED
+ & readl(sock->addr + SOCK_PRESENT_STATE))) {
+ printk(KERN_WARNING "%s : card gone, unexpectedly\n",
+ sock->dev.bus_id);
+ return rc;
+ }
+
+ mmc = mmc_alloc_host(sizeof(struct tifm_sd), &sock->dev);
+ if (!mmc)
+ return -ENOMEM;
+
+ host = mmc_priv(mmc);
+ host->no_dma = no_dma;
+ tifm_set_drvdata(sock, mmc);
+ host->dev = sock;
+ host->timeout_jiffies = msecs_to_jiffies(1000);
+
+ tasklet_init(&host->finish_tasklet, tifm_sd_end_cmd,
+ (unsigned long)host);
+ setup_timer(&host->timer, tifm_sd_abort, (unsigned long)host);
+
+ mmc->ops = &tifm_sd_ops;
+ mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
+ mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MULTIWRITE;
+ mmc->f_min = 20000000 / 60;
+ mmc->f_max = 24000000;
+
+ mmc->max_blk_count = 2048;
+ mmc->max_hw_segs = mmc->max_blk_count;
+ mmc->max_blk_size = min(TIFM_MMCSD_MAX_BLOCK_SIZE, PAGE_SIZE);
+ mmc->max_seg_size = mmc->max_blk_count * mmc->max_blk_size;
+ mmc->max_req_size = mmc->max_seg_size;
+ mmc->max_phys_segs = mmc->max_hw_segs;
+
+ sock->card_event = tifm_sd_card_event;
+ sock->data_event = tifm_sd_data_event;
+ rc = tifm_sd_initialize_host(host);
+
+ if (!rc)
+ rc = mmc_add_host(mmc);
+ if (!rc)
+ return 0;
+
+ mmc_free_host(mmc);
+ return rc;
+}
+
+static void tifm_sd_remove(struct tifm_dev *sock)
+{
+ struct mmc_host *mmc = tifm_get_drvdata(sock);
+ struct tifm_sd *host = mmc_priv(mmc);
+ unsigned long flags;
+
+ spin_lock_irqsave(&sock->lock, flags);
+ host->eject = 1;
+ writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE);
+ mmiowb();
+ spin_unlock_irqrestore(&sock->lock, flags);
+
+ tasklet_kill(&host->finish_tasklet);
+
+ spin_lock_irqsave(&sock->lock, flags);
+ if (host->req) {
+ writel(TIFM_FIFO_INT_SETALL,
+ sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
+ writel(0, sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
+ host->req->cmd->error = MMC_ERR_TIMEOUT;
+ if (host->req->stop)
+ host->req->stop->error = MMC_ERR_TIMEOUT;
+ tasklet_schedule(&host->finish_tasklet);
+ }
+ spin_unlock_irqrestore(&sock->lock, flags);
+ mmc_remove_host(mmc);
+ dev_dbg(&sock->dev, "after remove\n");
+
+ /* The meaning of the bit majority in this constant is unknown. */
+ writel(0xfff8 & readl(sock->addr + SOCK_CONTROL),
+ sock->addr + SOCK_CONTROL);
+
+ mmc_free_host(mmc);
+}
+
+#ifdef CONFIG_PM
+
+static int tifm_sd_suspend(struct tifm_dev *sock, pm_message_t state)
+{
+ struct mmc_host *mmc = tifm_get_drvdata(sock);
+ int rc;
+
+ rc = mmc_suspend_host(mmc, state);
+ /* The meaning of the bit majority in this constant is unknown. */
+ writel(0xfff8 & readl(sock->addr + SOCK_CONTROL),
+ sock->addr + SOCK_CONTROL);
+ return rc;
+}
+
+static int tifm_sd_resume(struct tifm_dev *sock)
+{
+ struct mmc_host *mmc = tifm_get_drvdata(sock);
+ struct tifm_sd *host = mmc_priv(mmc);
+ int rc;
+
+ rc = tifm_sd_initialize_host(host);
+ dev_dbg(&sock->dev, "resume initialize %d\n", rc);
+
+ if (rc)
+ host->eject = 1;
+ else
+ rc = mmc_resume_host(mmc);
+
+ return rc;
+}
+
+#else
+
+#define tifm_sd_suspend NULL
+#define tifm_sd_resume NULL
+
+#endif /* CONFIG_PM */
+
+static struct tifm_device_id tifm_sd_id_tbl[] = {
+ { TIFM_TYPE_SD }, { }
+};
+
+static struct tifm_driver tifm_sd_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE
+ },
+ .id_table = tifm_sd_id_tbl,
+ .probe = tifm_sd_probe,
+ .remove = tifm_sd_remove,
+ .suspend = tifm_sd_suspend,
+ .resume = tifm_sd_resume
+};
+
+static int __init tifm_sd_init(void)
+{
+ return tifm_register_driver(&tifm_sd_driver);
+}
+
+static void __exit tifm_sd_exit(void)
+{
+ tifm_unregister_driver(&tifm_sd_driver);
+}
+
+MODULE_AUTHOR("Alex Dubov");
+MODULE_DESCRIPTION("TI FlashMedia SD driver");
+MODULE_LICENSE("GPL");
+MODULE_DEVICE_TABLE(tifm, tifm_sd_id_tbl);
+MODULE_VERSION(DRIVER_VERSION);
+
+module_init(tifm_sd_init);
+module_exit(tifm_sd_exit);
diff --git a/drivers/mmc/wbsd.c b/drivers/mmc/host/wbsd.c
similarity index 92%
rename from drivers/mmc/wbsd.c
rename to drivers/mmc/host/wbsd.c
index 05ccfc4..867ca6a 100644
--- a/drivers/mmc/wbsd.c
+++ b/drivers/mmc/host/wbsd.c
@@ -1,7 +1,7 @@
/*
* linux/drivers/mmc/wbsd.c - Winbond W83L51xD SD/MMC driver
*
- * Copyright (C) 2004-2006 Pierre Ossman, All Rights Reserved.
+ * Copyright (C) 2004-2007 Pierre Ossman, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -33,7 +33,6 @@
#include <linux/pnp.h>
#include <linux/highmem.h>
#include <linux/mmc/host.h>
-#include <linux/mmc/protocol.h>
#include <asm/io.h>
#include <asm/dma.h>
@@ -178,9 +177,8 @@
ier = 0;
ier |= WBSD_EINT_CARD;
ier |= WBSD_EINT_FIFO_THRE;
- ier |= WBSD_EINT_CCRC;
- ier |= WBSD_EINT_TIMEOUT;
ier |= WBSD_EINT_CRC;
+ ier |= WBSD_EINT_TIMEOUT;
ier |= WBSD_EINT_TC;
outb(ier, host->base + WBSD_EIR);
@@ -278,90 +276,36 @@
static inline void wbsd_sg_to_dma(struct wbsd_host *host, struct mmc_data *data)
{
- unsigned int len, i, size;
+ unsigned int len, i;
struct scatterlist *sg;
char *dmabuf = host->dma_buffer;
char *sgbuf;
- size = host->size;
-
sg = data->sg;
len = data->sg_len;
- /*
- * Just loop through all entries. Size might not
- * be the entire list though so make sure that
- * we do not transfer too much.
- */
for (i = 0; i < len; i++) {
sgbuf = page_address(sg[i].page) + sg[i].offset;
- if (size < sg[i].length)
- memcpy(dmabuf, sgbuf, size);
- else
- memcpy(dmabuf, sgbuf, sg[i].length);
+ memcpy(dmabuf, sgbuf, sg[i].length);
dmabuf += sg[i].length;
-
- if (size < sg[i].length)
- size = 0;
- else
- size -= sg[i].length;
-
- if (size == 0)
- break;
}
-
- /*
- * Check that we didn't get a request to transfer
- * more data than can fit into the SG list.
- */
-
- BUG_ON(size != 0);
-
- host->size -= size;
}
static inline void wbsd_dma_to_sg(struct wbsd_host *host, struct mmc_data *data)
{
- unsigned int len, i, size;
+ unsigned int len, i;
struct scatterlist *sg;
char *dmabuf = host->dma_buffer;
char *sgbuf;
- size = host->size;
-
sg = data->sg;
len = data->sg_len;
- /*
- * Just loop through all entries. Size might not
- * be the entire list though so make sure that
- * we do not transfer too much.
- */
for (i = 0; i < len; i++) {
sgbuf = page_address(sg[i].page) + sg[i].offset;
- if (size < sg[i].length)
- memcpy(sgbuf, dmabuf, size);
- else
- memcpy(sgbuf, dmabuf, sg[i].length);
+ memcpy(sgbuf, dmabuf, sg[i].length);
dmabuf += sg[i].length;
-
- if (size < sg[i].length)
- size = 0;
- else
- size -= sg[i].length;
-
- if (size == 0)
- break;
}
-
- /*
- * Check that we didn't get a request to transfer
- * more data than can fit into the SG list.
- */
-
- BUG_ON(size != 0);
-
- host->size -= size;
}
/*
@@ -484,7 +428,7 @@
/*
* Handle excessive data.
*/
- if (data->bytes_xfered == host->size)
+ if (host->num_sg == 0)
return;
buffer = wbsd_sg_to_buffer(host) + host->offset;
@@ -514,31 +458,14 @@
data->bytes_xfered++;
/*
- * Transfer done?
- */
- if (data->bytes_xfered == host->size)
- return;
-
- /*
* End of scatter list entry?
*/
if (host->remain == 0) {
/*
* Get next entry. Check if last.
*/
- if (!wbsd_next_sg(host)) {
- /*
- * We should never reach this point.
- * It means that we're trying to
- * transfer more blocks than can fit
- * into the scatter list.
- */
- BUG_ON(1);
-
- host->size = data->bytes_xfered;
-
+ if (!wbsd_next_sg(host))
return;
- }
buffer = wbsd_sg_to_buffer(host);
}
@@ -550,7 +477,7 @@
* hardware problem. The chip doesn't trigger
* FIFO threshold interrupts properly.
*/
- if ((host->size - data->bytes_xfered) < 16)
+ if ((data->blocks * data->blksz - data->bytes_xfered) < 16)
tasklet_schedule(&host->fifo_tasklet);
}
@@ -564,7 +491,7 @@
* Check that we aren't being called after the
* entire buffer has been transfered.
*/
- if (data->bytes_xfered == host->size)
+ if (host->num_sg == 0)
return;
buffer = wbsd_sg_to_buffer(host) + host->offset;
@@ -594,31 +521,14 @@
data->bytes_xfered++;
/*
- * Transfer done?
- */
- if (data->bytes_xfered == host->size)
- return;
-
- /*
* End of scatter list entry?
*/
if (host->remain == 0) {
/*
* Get next entry. Check if last.
*/
- if (!wbsd_next_sg(host)) {
- /*
- * We should never reach this point.
- * It means that we're trying to
- * transfer more blocks than can fit
- * into the scatter list.
- */
- BUG_ON(1);
-
- host->size = data->bytes_xfered;
-
+ if (!wbsd_next_sg(host))
return;
- }
buffer = wbsd_sg_to_buffer(host);
}
@@ -638,6 +548,7 @@
u16 blksize;
u8 setup;
unsigned long dmaflags;
+ unsigned int size;
DBGF("blksz %04x blks %04x flags %08x\n",
data->blksz, data->blocks, data->flags);
@@ -647,7 +558,7 @@
/*
* Calculate size.
*/
- host->size = data->blocks * data->blksz;
+ size = data->blocks * data->blksz;
/*
* Check timeout values for overflow.
@@ -705,8 +616,8 @@
/*
* The buffer for DMA is only 64 kB.
*/
- BUG_ON(host->size > 0x10000);
- if (host->size > 0x10000) {
+ BUG_ON(size > 0x10000);
+ if (size > 0x10000) {
data->error = MMC_ERR_INVALID;
return;
}
@@ -729,7 +640,7 @@
else
set_dma_mode(host->dma, DMA_MODE_WRITE & ~0x40);
set_dma_addr(host->dma, host->dma_addr);
- set_dma_count(host->dma, host->size);
+ set_dma_count(host->dma, size);
enable_dma(host->dma);
release_dma_lock(dmaflags);
@@ -812,6 +723,10 @@
count = get_dma_residue(host->dma);
release_dma_lock(dmaflags);
+ data->bytes_xfered = host->mrq->data->blocks *
+ host->mrq->data->blksz - count;
+ data->bytes_xfered -= data->bytes_xfered % data->blksz;
+
/*
* Any leftover data?
*/
@@ -820,7 +735,8 @@
"%d bytes left.\n",
mmc_hostname(host->mmc), count);
- data->error = MMC_ERR_FAILED;
+ if (data->error == MMC_ERR_NONE)
+ data->error = MMC_ERR_FAILED;
} else {
/*
* Transfer data from DMA buffer to
@@ -828,8 +744,11 @@
*/
if (data->flags & MMC_DATA_READ)
wbsd_dma_to_sg(host, data);
+ }
- data->bytes_xfered = host->size;
+ if (data->error != MMC_ERR_NONE) {
+ if (data->bytes_xfered)
+ data->bytes_xfered -= data->blksz;
}
}
@@ -869,24 +788,7 @@
goto done;
}
- /*
- * Does the request include data?
- */
if (cmd->data) {
- wbsd_prepare_data(host, cmd->data);
-
- if (cmd->data->error != MMC_ERR_NONE)
- goto done;
- }
-
- wbsd_send_command(host, cmd);
-
- /*
- * If this is a data transfer the request
- * will be finished after the data has
- * transfered.
- */
- if (cmd->data && (cmd->error == MMC_ERR_NONE)) {
/*
* The hardware is so delightfully stupid that it has a list
* of "data" commands. If a command isn't on this list, it'll
@@ -918,14 +820,30 @@
"supported by this controller.\n",
mmc_hostname(host->mmc), cmd->opcode);
#endif
- cmd->data->error = MMC_ERR_INVALID;
-
- if (cmd->data->stop)
- wbsd_send_command(host, cmd->data->stop);
+ cmd->error = MMC_ERR_INVALID;
goto done;
};
+ }
+ /*
+ * Does the request include data?
+ */
+ if (cmd->data) {
+ wbsd_prepare_data(host, cmd->data);
+
+ if (cmd->data->error != MMC_ERR_NONE)
+ goto done;
+ }
+
+ wbsd_send_command(host, cmd);
+
+ /*
+ * If this is a data transfer the request
+ * will be finished after the data has
+ * transfered.
+ */
+ if (cmd->data && (cmd->error == MMC_ERR_NONE)) {
/*
* Dirty fix for hardware bug.
*/
@@ -1167,7 +1085,7 @@
/*
* Done?
*/
- if (host->size == data->bytes_xfered) {
+ if (host->num_sg == 0) {
wbsd_write_index(host, WBSD_IDX_FIFOEN, 0);
tasklet_schedule(&host->finish_tasklet);
}
@@ -1245,30 +1163,6 @@
spin_unlock(&host->lock);
}
-static void wbsd_tasklet_block(unsigned long param)
-{
- struct wbsd_host *host = (struct wbsd_host *)param;
- struct mmc_data *data;
-
- spin_lock(&host->lock);
-
- if ((wbsd_read_index(host, WBSD_IDX_CRCSTATUS) & WBSD_CRC_MASK) !=
- WBSD_CRC_OK) {
- data = wbsd_get_data(host);
- if (!data)
- goto end;
-
- DBGF("CRC error\n");
-
- data->error = MMC_ERR_BADCRC;
-
- tasklet_schedule(&host->finish_tasklet);
- }
-
-end:
- spin_unlock(&host->lock);
-}
-
/*
* Interrupt handling
*/
@@ -1299,8 +1193,6 @@
tasklet_hi_schedule(&host->crc_tasklet);
if (isr & WBSD_INT_TIMEOUT)
tasklet_hi_schedule(&host->timeout_tasklet);
- if (isr & WBSD_INT_BUSYEND)
- tasklet_hi_schedule(&host->block_tasklet);
if (isr & WBSD_INT_TC)
tasklet_schedule(&host->finish_tasklet);
@@ -1601,8 +1493,6 @@
(unsigned long)host);
tasklet_init(&host->finish_tasklet, wbsd_tasklet_finish,
(unsigned long)host);
- tasklet_init(&host->block_tasklet, wbsd_tasklet_block,
- (unsigned long)host);
return 0;
}
@@ -1621,7 +1511,6 @@
tasklet_kill(&host->crc_tasklet);
tasklet_kill(&host->timeout_tasklet);
tasklet_kill(&host->finish_tasklet);
- tasklet_kill(&host->block_tasklet);
}
/*
diff --git a/drivers/mmc/wbsd.h b/drivers/mmc/host/wbsd.h
similarity index 95%
rename from drivers/mmc/wbsd.h
rename to drivers/mmc/host/wbsd.h
index d06718b..873bda1 100644
--- a/drivers/mmc/wbsd.h
+++ b/drivers/mmc/host/wbsd.h
@@ -1,7 +1,7 @@
/*
* linux/drivers/mmc/wbsd.h - Winbond W83L51xD SD/MMC driver
*
- * Copyright (C) 2004-2005 Pierre Ossman, All Rights Reserved.
+ * Copyright (C) 2004-2007 Pierre Ossman, All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -46,10 +46,10 @@
#define WBSD_EINT_CARD 0x40
#define WBSD_EINT_FIFO_THRE 0x20
-#define WBSD_EINT_CCRC 0x10
+#define WBSD_EINT_CRC 0x10
#define WBSD_EINT_TIMEOUT 0x08
#define WBSD_EINT_PROGEND 0x04
-#define WBSD_EINT_CRC 0x02
+#define WBSD_EINT_BUSYEND 0x02
#define WBSD_EINT_TC 0x01
#define WBSD_INT_PENDING 0x80
@@ -158,8 +158,6 @@
unsigned int offset; /* Offset into current entry */
unsigned int remain; /* Data left in curren entry */
- int size; /* Total size of transfer */
-
char* dma_buffer; /* ISA DMA buffer */
dma_addr_t dma_addr; /* Physical address for same */
@@ -182,7 +180,6 @@
struct tasklet_struct crc_tasklet;
struct tasklet_struct timeout_tasklet;
struct tasklet_struct finish_tasklet;
- struct tasklet_struct block_tasklet;
struct timer_list ignore_timer; /* Ignore detection timer */
};
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
deleted file mode 100644
index 4a73e8b..0000000
--- a/drivers/mmc/mmc.c
+++ /dev/null
@@ -1,1724 +0,0 @@
-/*
- * linux/drivers/mmc/mmc.c
- *
- * Copyright (C) 2003-2004 Russell King, All Rights Reserved.
- * SD support Copyright (C) 2004 Ian Molton, All Rights Reserved.
- * SD support Copyright (C) 2005 Pierre Ossman, All Rights Reserved.
- * MMCv4 support Copyright (C) 2006 Philip Langdale, All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/completion.h>
-#include <linux/device.h>
-#include <linux/delay.h>
-#include <linux/pagemap.h>
-#include <linux/err.h>
-#include <asm/scatterlist.h>
-#include <linux/scatterlist.h>
-
-#include <linux/mmc/card.h>
-#include <linux/mmc/host.h>
-#include <linux/mmc/protocol.h>
-
-#include "mmc.h"
-
-#define CMD_RETRIES 3
-
-/*
- * OCR Bit positions to 10s of Vdd mV.
- */
-static const unsigned short mmc_ocr_bit_to_vdd[] = {
- 150, 155, 160, 165, 170, 180, 190, 200,
- 210, 220, 230, 240, 250, 260, 270, 280,
- 290, 300, 310, 320, 330, 340, 350, 360
-};
-
-static const unsigned int tran_exp[] = {
- 10000, 100000, 1000000, 10000000,
- 0, 0, 0, 0
-};
-
-static const unsigned char tran_mant[] = {
- 0, 10, 12, 13, 15, 20, 25, 30,
- 35, 40, 45, 50, 55, 60, 70, 80,
-};
-
-static const unsigned int tacc_exp[] = {
- 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000,
-};
-
-static const unsigned int tacc_mant[] = {
- 0, 10, 12, 13, 15, 20, 25, 30,
- 35, 40, 45, 50, 55, 60, 70, 80,
-};
-
-
-/**
- * mmc_request_done - finish processing an MMC request
- * @host: MMC host which completed request
- * @mrq: MMC request which request
- *
- * MMC drivers should call this function when they have completed
- * their processing of a request.
- */
-void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
-{
- struct mmc_command *cmd = mrq->cmd;
- int err = cmd->error;
-
- pr_debug("%s: req done (CMD%u): %d/%d/%d: %08x %08x %08x %08x\n",
- mmc_hostname(host), cmd->opcode, err,
- mrq->data ? mrq->data->error : 0,
- mrq->stop ? mrq->stop->error : 0,
- cmd->resp[0], cmd->resp[1], cmd->resp[2], cmd->resp[3]);
-
- if (err && cmd->retries) {
- cmd->retries--;
- cmd->error = 0;
- host->ops->request(host, mrq);
- } else if (mrq->done) {
- mrq->done(mrq);
- }
-}
-
-EXPORT_SYMBOL(mmc_request_done);
-
-/**
- * mmc_start_request - start a command on a host
- * @host: MMC host to start command on
- * @mrq: MMC request to start
- *
- * Queue a command on the specified host. We expect the
- * caller to be holding the host lock with interrupts disabled.
- */
-void
-mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
-{
- pr_debug("%s: starting CMD%u arg %08x flags %08x\n",
- mmc_hostname(host), mrq->cmd->opcode,
- mrq->cmd->arg, mrq->cmd->flags);
-
- WARN_ON(!host->claimed);
-
- mrq->cmd->error = 0;
- mrq->cmd->mrq = mrq;
- if (mrq->data) {
- BUG_ON(mrq->data->blksz > host->max_blk_size);
- BUG_ON(mrq->data->blocks > host->max_blk_count);
- BUG_ON(mrq->data->blocks * mrq->data->blksz >
- host->max_req_size);
-
- mrq->cmd->data = mrq->data;
- mrq->data->error = 0;
- mrq->data->mrq = mrq;
- if (mrq->stop) {
- mrq->data->stop = mrq->stop;
- mrq->stop->error = 0;
- mrq->stop->mrq = mrq;
- }
- }
- host->ops->request(host, mrq);
-}
-
-EXPORT_SYMBOL(mmc_start_request);
-
-static void mmc_wait_done(struct mmc_request *mrq)
-{
- complete(mrq->done_data);
-}
-
-int mmc_wait_for_req(struct mmc_host *host, struct mmc_request *mrq)
-{
- DECLARE_COMPLETION_ONSTACK(complete);
-
- mrq->done_data = &complete;
- mrq->done = mmc_wait_done;
-
- mmc_start_request(host, mrq);
-
- wait_for_completion(&complete);
-
- return 0;
-}
-
-EXPORT_SYMBOL(mmc_wait_for_req);
-
-/**
- * mmc_wait_for_cmd - start a command and wait for completion
- * @host: MMC host to start command
- * @cmd: MMC command to start
- * @retries: maximum number of retries
- *
- * Start a new MMC command for a host, and wait for the command
- * to complete. Return any error that occurred while the command
- * was executing. Do not attempt to parse the response.
- */
-int mmc_wait_for_cmd(struct mmc_host *host, struct mmc_command *cmd, int retries)
-{
- struct mmc_request mrq;
-
- BUG_ON(!host->claimed);
-
- memset(&mrq, 0, sizeof(struct mmc_request));
-
- memset(cmd->resp, 0, sizeof(cmd->resp));
- cmd->retries = retries;
-
- mrq.cmd = cmd;
- cmd->data = NULL;
-
- mmc_wait_for_req(host, &mrq);
-
- return cmd->error;
-}
-
-EXPORT_SYMBOL(mmc_wait_for_cmd);
-
-/**
- * mmc_wait_for_app_cmd - start an application command and wait for
- completion
- * @host: MMC host to start command
- * @rca: RCA to send MMC_APP_CMD to
- * @cmd: MMC command to start
- * @retries: maximum number of retries
- *
- * Sends a MMC_APP_CMD, checks the card response, sends the command
- * in the parameter and waits for it to complete. Return any error
- * that occurred while the command was executing. Do not attempt to
- * parse the response.
- */
-int mmc_wait_for_app_cmd(struct mmc_host *host, unsigned int rca,
- struct mmc_command *cmd, int retries)
-{
- struct mmc_request mrq;
- struct mmc_command appcmd;
-
- int i, err;
-
- BUG_ON(!host->claimed);
- BUG_ON(retries < 0);
-
- err = MMC_ERR_INVALID;
-
- /*
- * We have to resend MMC_APP_CMD for each attempt so
- * we cannot use the retries field in mmc_command.
- */
- for (i = 0;i <= retries;i++) {
- memset(&mrq, 0, sizeof(struct mmc_request));
-
- appcmd.opcode = MMC_APP_CMD;
- appcmd.arg = rca << 16;
- appcmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
- appcmd.retries = 0;
- memset(appcmd.resp, 0, sizeof(appcmd.resp));
- appcmd.data = NULL;
-
- mrq.cmd = &appcmd;
- appcmd.data = NULL;
-
- mmc_wait_for_req(host, &mrq);
-
- if (appcmd.error) {
- err = appcmd.error;
- continue;
- }
-
- /* Check that card supported application commands */
- if (!(appcmd.resp[0] & R1_APP_CMD))
- return MMC_ERR_FAILED;
-
- memset(&mrq, 0, sizeof(struct mmc_request));
-
- memset(cmd->resp, 0, sizeof(cmd->resp));
- cmd->retries = 0;
-
- mrq.cmd = cmd;
- cmd->data = NULL;
-
- mmc_wait_for_req(host, &mrq);
-
- err = cmd->error;
- if (cmd->error == MMC_ERR_NONE)
- break;
- }
-
- return err;
-}
-
-EXPORT_SYMBOL(mmc_wait_for_app_cmd);
-
-/**
- * mmc_set_data_timeout - set the timeout for a data command
- * @data: data phase for command
- * @card: the MMC card associated with the data transfer
- * @write: flag to differentiate reads from writes
- */
-void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card,
- int write)
-{
- unsigned int mult;
-
- /*
- * SD cards use a 100 multiplier rather than 10
- */
- mult = mmc_card_sd(card) ? 100 : 10;
-
- /*
- * Scale up the multiplier (and therefore the timeout) by
- * the r2w factor for writes.
- */
- if (write)
- mult <<= card->csd.r2w_factor;
-
- data->timeout_ns = card->csd.tacc_ns * mult;
- data->timeout_clks = card->csd.tacc_clks * mult;
-
- /*
- * SD cards also have an upper limit on the timeout.
- */
- if (mmc_card_sd(card)) {
- unsigned int timeout_us, limit_us;
-
- timeout_us = data->timeout_ns / 1000;
- timeout_us += data->timeout_clks * 1000 /
- (card->host->ios.clock / 1000);
-
- if (write)
- limit_us = 250000;
- else
- limit_us = 100000;
-
- /*
- * SDHC cards always use these fixed values.
- */
- if (timeout_us > limit_us || mmc_card_blockaddr(card)) {
- data->timeout_ns = limit_us * 1000;
- data->timeout_clks = 0;
- }
- }
-}
-EXPORT_SYMBOL(mmc_set_data_timeout);
-
-static int mmc_select_card(struct mmc_host *host, struct mmc_card *card);
-
-/**
- * __mmc_claim_host - exclusively claim a host
- * @host: mmc host to claim
- * @card: mmc card to claim host for
- *
- * Claim a host for a set of operations. If a valid card
- * is passed and this wasn't the last card selected, select
- * the card before returning.
- *
- * Note: you should use mmc_card_claim_host or mmc_claim_host.
- */
-int __mmc_claim_host(struct mmc_host *host, struct mmc_card *card)
-{
- DECLARE_WAITQUEUE(wait, current);
- unsigned long flags;
- int err = 0;
-
- add_wait_queue(&host->wq, &wait);
- spin_lock_irqsave(&host->lock, flags);
- while (1) {
- set_current_state(TASK_UNINTERRUPTIBLE);
- if (!host->claimed)
- break;
- spin_unlock_irqrestore(&host->lock, flags);
- schedule();
- spin_lock_irqsave(&host->lock, flags);
- }
- set_current_state(TASK_RUNNING);
- host->claimed = 1;
- spin_unlock_irqrestore(&host->lock, flags);
- remove_wait_queue(&host->wq, &wait);
-
- if (card != (void *)-1) {
- err = mmc_select_card(host, card);
- if (err != MMC_ERR_NONE)
- return err;
- }
-
- return err;
-}
-
-EXPORT_SYMBOL(__mmc_claim_host);
-
-/**
- * mmc_release_host - release a host
- * @host: mmc host to release
- *
- * Release a MMC host, allowing others to claim the host
- * for their operations.
- */
-void mmc_release_host(struct mmc_host *host)
-{
- unsigned long flags;
-
- BUG_ON(!host->claimed);
-
- spin_lock_irqsave(&host->lock, flags);
- host->claimed = 0;
- spin_unlock_irqrestore(&host->lock, flags);
-
- wake_up(&host->wq);
-}
-
-EXPORT_SYMBOL(mmc_release_host);
-
-static inline void mmc_set_ios(struct mmc_host *host)
-{
- struct mmc_ios *ios = &host->ios;
-
- pr_debug("%s: clock %uHz busmode %u powermode %u cs %u Vdd %u "
- "width %u timing %u\n",
- mmc_hostname(host), ios->clock, ios->bus_mode,
- ios->power_mode, ios->chip_select, ios->vdd,
- ios->bus_width, ios->timing);
-
- host->ops->set_ios(host, ios);
-}
-
-static int mmc_select_card(struct mmc_host *host, struct mmc_card *card)
-{
- int err;
- struct mmc_command cmd;
-
- BUG_ON(!host->claimed);
-
- if (host->card_selected == card)
- return MMC_ERR_NONE;
-
- host->card_selected = card;
-
- cmd.opcode = MMC_SELECT_CARD;
- cmd.arg = card->rca << 16;
- cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
-
- err = mmc_wait_for_cmd(host, &cmd, CMD_RETRIES);
- if (err != MMC_ERR_NONE)
- return err;
-
- /*
- * We can only change the bus width of SD cards when
- * they are selected so we have to put the handling
- * here.
- *
- * The card is in 1 bit mode by default so
- * we only need to change if it supports the
- * wider version.
- */
- if (mmc_card_sd(card) &&
- (card->scr.bus_widths & SD_SCR_BUS_WIDTH_4)) {
-
- /*
- * Default bus width is 1 bit.
- */
- host->ios.bus_width = MMC_BUS_WIDTH_1;
-
- if (host->caps & MMC_CAP_4_BIT_DATA) {
- struct mmc_command cmd;
- cmd.opcode = SD_APP_SET_BUS_WIDTH;
- cmd.arg = SD_BUS_WIDTH_4;
- cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
-
- err = mmc_wait_for_app_cmd(host, card->rca, &cmd,
- CMD_RETRIES);
- if (err != MMC_ERR_NONE)
- return err;
-
- host->ios.bus_width = MMC_BUS_WIDTH_4;
- }
- }
-
- mmc_set_ios(host);
-
- return MMC_ERR_NONE;
-}
-
-/*
- * Ensure that no card is selected.
- */
-static void mmc_deselect_cards(struct mmc_host *host)
-{
- struct mmc_command cmd;
-
- if (host->card_selected) {
- host->card_selected = NULL;
-
- cmd.opcode = MMC_SELECT_CARD;
- cmd.arg = 0;
- cmd.flags = MMC_RSP_NONE | MMC_CMD_AC;
-
- mmc_wait_for_cmd(host, &cmd, 0);
- }
-}
-
-
-static inline void mmc_delay(unsigned int ms)
-{
- if (ms < 1000 / HZ) {
- cond_resched();
- mdelay(ms);
- } else {
- msleep(ms);
- }
-}
-
-/*
- * Mask off any voltages we don't support and select
- * the lowest voltage
- */
-static u32 mmc_select_voltage(struct mmc_host *host, u32 ocr)
-{
- int bit;
-
- ocr &= host->ocr_avail;
-
- bit = ffs(ocr);
- if (bit) {
- bit -= 1;
-
- ocr &= 3 << bit;
-
- host->ios.vdd = bit;
- mmc_set_ios(host);
- } else {
- ocr = 0;
- }
-
- return ocr;
-}
-
-#define UNSTUFF_BITS(resp,start,size) \
- ({ \
- const int __size = size; \
- const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \
- const int __off = 3 - ((start) / 32); \
- const int __shft = (start) & 31; \
- u32 __res; \
- \
- __res = resp[__off] >> __shft; \
- if (__size + __shft > 32) \
- __res |= resp[__off-1] << ((32 - __shft) % 32); \
- __res & __mask; \
- })
-
-/*
- * Given the decoded CSD structure, decode the raw CID to our CID structure.
- */
-static void mmc_decode_cid(struct mmc_card *card)
-{
- u32 *resp = card->raw_cid;
-
- memset(&card->cid, 0, sizeof(struct mmc_cid));
-
- if (mmc_card_sd(card)) {
- /*
- * SD doesn't currently have a version field so we will
- * have to assume we can parse this.
- */
- card->cid.manfid = UNSTUFF_BITS(resp, 120, 8);
- card->cid.oemid = UNSTUFF_BITS(resp, 104, 16);
- card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8);
- card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8);
- card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8);
- card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8);
- card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8);
- card->cid.hwrev = UNSTUFF_BITS(resp, 60, 4);
- card->cid.fwrev = UNSTUFF_BITS(resp, 56, 4);
- card->cid.serial = UNSTUFF_BITS(resp, 24, 32);
- card->cid.year = UNSTUFF_BITS(resp, 12, 8);
- card->cid.month = UNSTUFF_BITS(resp, 8, 4);
-
- card->cid.year += 2000; /* SD cards year offset */
- } else {
- /*
- * The selection of the format here is based upon published
- * specs from sandisk and from what people have reported.
- */
- switch (card->csd.mmca_vsn) {
- case 0: /* MMC v1.0 - v1.2 */
- case 1: /* MMC v1.4 */
- card->cid.manfid = UNSTUFF_BITS(resp, 104, 24);
- card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8);
- card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8);
- card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8);
- card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8);
- card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8);
- card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8);
- card->cid.prod_name[6] = UNSTUFF_BITS(resp, 48, 8);
- card->cid.hwrev = UNSTUFF_BITS(resp, 44, 4);
- card->cid.fwrev = UNSTUFF_BITS(resp, 40, 4);
- card->cid.serial = UNSTUFF_BITS(resp, 16, 24);
- card->cid.month = UNSTUFF_BITS(resp, 12, 4);
- card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997;
- break;
-
- case 2: /* MMC v2.0 - v2.2 */
- case 3: /* MMC v3.1 - v3.3 */
- case 4: /* MMC v4 */
- card->cid.manfid = UNSTUFF_BITS(resp, 120, 8);
- card->cid.oemid = UNSTUFF_BITS(resp, 104, 16);
- card->cid.prod_name[0] = UNSTUFF_BITS(resp, 96, 8);
- card->cid.prod_name[1] = UNSTUFF_BITS(resp, 88, 8);
- card->cid.prod_name[2] = UNSTUFF_BITS(resp, 80, 8);
- card->cid.prod_name[3] = UNSTUFF_BITS(resp, 72, 8);
- card->cid.prod_name[4] = UNSTUFF_BITS(resp, 64, 8);
- card->cid.prod_name[5] = UNSTUFF_BITS(resp, 56, 8);
- card->cid.serial = UNSTUFF_BITS(resp, 16, 32);
- card->cid.month = UNSTUFF_BITS(resp, 12, 4);
- card->cid.year = UNSTUFF_BITS(resp, 8, 4) + 1997;
- break;
-
- default:
- printk("%s: card has unknown MMCA version %d\n",
- mmc_hostname(card->host), card->csd.mmca_vsn);
- mmc_card_set_bad(card);
- break;
- }
- }
-}
-
-/*
- * Given a 128-bit response, decode to our card CSD structure.
- */
-static void mmc_decode_csd(struct mmc_card *card)
-{
- struct mmc_csd *csd = &card->csd;
- unsigned int e, m, csd_struct;
- u32 *resp = card->raw_csd;
-
- if (mmc_card_sd(card)) {
- csd_struct = UNSTUFF_BITS(resp, 126, 2);
-
- switch (csd_struct) {
- case 0:
- m = UNSTUFF_BITS(resp, 115, 4);
- e = UNSTUFF_BITS(resp, 112, 3);
- csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10;
- csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100;
-
- m = UNSTUFF_BITS(resp, 99, 4);
- e = UNSTUFF_BITS(resp, 96, 3);
- csd->max_dtr = tran_exp[e] * tran_mant[m];
- csd->cmdclass = UNSTUFF_BITS(resp, 84, 12);
-
- e = UNSTUFF_BITS(resp, 47, 3);
- m = UNSTUFF_BITS(resp, 62, 12);
- csd->capacity = (1 + m) << (e + 2);
-
- csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4);
- csd->read_partial = UNSTUFF_BITS(resp, 79, 1);
- csd->write_misalign = UNSTUFF_BITS(resp, 78, 1);
- csd->read_misalign = UNSTUFF_BITS(resp, 77, 1);
- csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3);
- csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4);
- csd->write_partial = UNSTUFF_BITS(resp, 21, 1);
- break;
- case 1:
- /*
- * This is a block-addressed SDHC card. Most
- * interesting fields are unused and have fixed
- * values. To avoid getting tripped by buggy cards,
- * we assume those fixed values ourselves.
- */
- mmc_card_set_blockaddr(card);
-
- csd->tacc_ns = 0; /* Unused */
- csd->tacc_clks = 0; /* Unused */
-
- m = UNSTUFF_BITS(resp, 99, 4);
- e = UNSTUFF_BITS(resp, 96, 3);
- csd->max_dtr = tran_exp[e] * tran_mant[m];
- csd->cmdclass = UNSTUFF_BITS(resp, 84, 12);
-
- m = UNSTUFF_BITS(resp, 48, 22);
- csd->capacity = (1 + m) << 10;
-
- csd->read_blkbits = 9;
- csd->read_partial = 0;
- csd->write_misalign = 0;
- csd->read_misalign = 0;
- csd->r2w_factor = 4; /* Unused */
- csd->write_blkbits = 9;
- csd->write_partial = 0;
- break;
- default:
- printk("%s: unrecognised CSD structure version %d\n",
- mmc_hostname(card->host), csd_struct);
- mmc_card_set_bad(card);
- return;
- }
- } else {
- /*
- * We only understand CSD structure v1.1 and v1.2.
- * v1.2 has extra information in bits 15, 11 and 10.
- */
- csd_struct = UNSTUFF_BITS(resp, 126, 2);
- if (csd_struct != 1 && csd_struct != 2) {
- printk("%s: unrecognised CSD structure version %d\n",
- mmc_hostname(card->host), csd_struct);
- mmc_card_set_bad(card);
- return;
- }
-
- csd->mmca_vsn = UNSTUFF_BITS(resp, 122, 4);
- m = UNSTUFF_BITS(resp, 115, 4);
- e = UNSTUFF_BITS(resp, 112, 3);
- csd->tacc_ns = (tacc_exp[e] * tacc_mant[m] + 9) / 10;
- csd->tacc_clks = UNSTUFF_BITS(resp, 104, 8) * 100;
-
- m = UNSTUFF_BITS(resp, 99, 4);
- e = UNSTUFF_BITS(resp, 96, 3);
- csd->max_dtr = tran_exp[e] * tran_mant[m];
- csd->cmdclass = UNSTUFF_BITS(resp, 84, 12);
-
- e = UNSTUFF_BITS(resp, 47, 3);
- m = UNSTUFF_BITS(resp, 62, 12);
- csd->capacity = (1 + m) << (e + 2);
-
- csd->read_blkbits = UNSTUFF_BITS(resp, 80, 4);
- csd->read_partial = UNSTUFF_BITS(resp, 79, 1);
- csd->write_misalign = UNSTUFF_BITS(resp, 78, 1);
- csd->read_misalign = UNSTUFF_BITS(resp, 77, 1);
- csd->r2w_factor = UNSTUFF_BITS(resp, 26, 3);
- csd->write_blkbits = UNSTUFF_BITS(resp, 22, 4);
- csd->write_partial = UNSTUFF_BITS(resp, 21, 1);
- }
-}
-
-/*
- * Given a 64-bit response, decode to our card SCR structure.
- */
-static void mmc_decode_scr(struct mmc_card *card)
-{
- struct sd_scr *scr = &card->scr;
- unsigned int scr_struct;
- u32 resp[4];
-
- BUG_ON(!mmc_card_sd(card));
-
- resp[3] = card->raw_scr[1];
- resp[2] = card->raw_scr[0];
-
- scr_struct = UNSTUFF_BITS(resp, 60, 4);
- if (scr_struct != 0) {
- printk("%s: unrecognised SCR structure version %d\n",
- mmc_hostname(card->host), scr_struct);
- mmc_card_set_bad(card);
- return;
- }
-
- scr->sda_vsn = UNSTUFF_BITS(resp, 56, 4);
- scr->bus_widths = UNSTUFF_BITS(resp, 48, 4);
-}
-
-/*
- * Locate a MMC card on this MMC host given a raw CID.
- */
-static struct mmc_card *mmc_find_card(struct mmc_host *host, u32 *raw_cid)
-{
- struct mmc_card *card;
-
- list_for_each_entry(card, &host->cards, node) {
- if (memcmp(card->raw_cid, raw_cid, sizeof(card->raw_cid)) == 0)
- return card;
- }
- return NULL;
-}
-
-/*
- * Allocate a new MMC card, and assign a unique RCA.
- */
-static struct mmc_card *
-mmc_alloc_card(struct mmc_host *host, u32 *raw_cid, unsigned int *frca)
-{
- struct mmc_card *card, *c;
- unsigned int rca = *frca;
-
- card = kmalloc(sizeof(struct mmc_card), GFP_KERNEL);
- if (!card)
- return ERR_PTR(-ENOMEM);
-
- mmc_init_card(card, host);
- memcpy(card->raw_cid, raw_cid, sizeof(card->raw_cid));
-
- again:
- list_for_each_entry(c, &host->cards, node)
- if (c->rca == rca) {
- rca++;
- goto again;
- }
-
- card->rca = rca;
-
- *frca = rca;
-
- return card;
-}
-
-/*
- * Tell attached cards to go to IDLE state
- */
-static void mmc_idle_cards(struct mmc_host *host)
-{
- struct mmc_command cmd;
-
- host->ios.chip_select = MMC_CS_HIGH;
- mmc_set_ios(host);
-
- mmc_delay(1);
-
- cmd.opcode = MMC_GO_IDLE_STATE;
- cmd.arg = 0;
- cmd.flags = MMC_RSP_NONE | MMC_CMD_BC;
-
- mmc_wait_for_cmd(host, &cmd, 0);
-
- mmc_delay(1);
-
- host->ios.chip_select = MMC_CS_DONTCARE;
- mmc_set_ios(host);
-
- mmc_delay(1);
-}
-
-/*
- * Apply power to the MMC stack. This is a two-stage process.
- * First, we enable power to the card without the clock running.
- * We then wait a bit for the power to stabilise. Finally,
- * enable the bus drivers and clock to the card.
- *
- * We must _NOT_ enable the clock prior to power stablising.
- *
- * If a host does all the power sequencing itself, ignore the
- * initial MMC_POWER_UP stage.
- */
-static void mmc_power_up(struct mmc_host *host)
-{
- int bit = fls(host->ocr_avail) - 1;
-
- host->ios.vdd = bit;
- host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
- host->ios.chip_select = MMC_CS_DONTCARE;
- host->ios.power_mode = MMC_POWER_UP;
- host->ios.bus_width = MMC_BUS_WIDTH_1;
- host->ios.timing = MMC_TIMING_LEGACY;
- mmc_set_ios(host);
-
- mmc_delay(1);
-
- host->ios.clock = host->f_min;
- host->ios.power_mode = MMC_POWER_ON;
- mmc_set_ios(host);
-
- mmc_delay(2);
-}
-
-static void mmc_power_off(struct mmc_host *host)
-{
- host->ios.clock = 0;
- host->ios.vdd = 0;
- host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
- host->ios.chip_select = MMC_CS_DONTCARE;
- host->ios.power_mode = MMC_POWER_OFF;
- host->ios.bus_width = MMC_BUS_WIDTH_1;
- host->ios.timing = MMC_TIMING_LEGACY;
- mmc_set_ios(host);
-}
-
-static int mmc_send_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
-{
- struct mmc_command cmd;
- int i, err = 0;
-
- cmd.opcode = MMC_SEND_OP_COND;
- cmd.arg = ocr;
- cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
-
- for (i = 100; i; i--) {
- err = mmc_wait_for_cmd(host, &cmd, 0);
- if (err != MMC_ERR_NONE)
- break;
-
- if (cmd.resp[0] & MMC_CARD_BUSY || ocr == 0)
- break;
-
- err = MMC_ERR_TIMEOUT;
-
- mmc_delay(10);
- }
-
- if (rocr)
- *rocr = cmd.resp[0];
-
- return err;
-}
-
-static int mmc_send_app_op_cond(struct mmc_host *host, u32 ocr, u32 *rocr)
-{
- struct mmc_command cmd;
- int i, err = 0;
-
- cmd.opcode = SD_APP_OP_COND;
- cmd.arg = ocr;
- cmd.flags = MMC_RSP_R3 | MMC_CMD_BCR;
-
- for (i = 100; i; i--) {
- err = mmc_wait_for_app_cmd(host, 0, &cmd, CMD_RETRIES);
- if (err != MMC_ERR_NONE)
- break;
-
- if (cmd.resp[0] & MMC_CARD_BUSY || ocr == 0)
- break;
-
- err = MMC_ERR_TIMEOUT;
-
- mmc_delay(10);
- }
-
- if (rocr)
- *rocr = cmd.resp[0];
-
- return err;
-}
-
-static int mmc_send_if_cond(struct mmc_host *host, u32 ocr, int *rsd2)
-{
- struct mmc_command cmd;
- int err, sd2;
- static const u8 test_pattern = 0xAA;
-
- /*
- * To support SD 2.0 cards, we must always invoke SD_SEND_IF_COND
- * before SD_APP_OP_COND. This command will harmlessly fail for
- * SD 1.0 cards.
- */
- cmd.opcode = SD_SEND_IF_COND;
- cmd.arg = ((ocr & 0xFF8000) != 0) << 8 | test_pattern;
- cmd.flags = MMC_RSP_R7 | MMC_CMD_BCR;
-
- err = mmc_wait_for_cmd(host, &cmd, 0);
- if (err == MMC_ERR_NONE) {
- if ((cmd.resp[0] & 0xFF) == test_pattern) {
- sd2 = 1;
- } else {
- sd2 = 0;
- err = MMC_ERR_FAILED;
- }
- } else {
- /*
- * Treat errors as SD 1.0 card.
- */
- sd2 = 0;
- err = MMC_ERR_NONE;
- }
- if (rsd2)
- *rsd2 = sd2;
- return err;
-}
-
-/*
- * Discover cards by requesting their CID. If this command
- * times out, it is not an error; there are no further cards
- * to be discovered. Add new cards to the list.
- *
- * Create a mmc_card entry for each discovered card, assigning
- * it an RCA, and save the raw CID for decoding later.
- */
-static void mmc_discover_cards(struct mmc_host *host)
-{
- struct mmc_card *card;
- unsigned int first_rca = 1, err;
-
- while (1) {
- struct mmc_command cmd;
-
- cmd.opcode = MMC_ALL_SEND_CID;
- cmd.arg = 0;
- cmd.flags = MMC_RSP_R2 | MMC_CMD_BCR;
-
- err = mmc_wait_for_cmd(host, &cmd, CMD_RETRIES);
- if (err == MMC_ERR_TIMEOUT) {
- err = MMC_ERR_NONE;
- break;
- }
- if (err != MMC_ERR_NONE) {
- printk(KERN_ERR "%s: error requesting CID: %d\n",
- mmc_hostname(host), err);
- break;
- }
-
- card = mmc_find_card(host, cmd.resp);
- if (!card) {
- card = mmc_alloc_card(host, cmd.resp, &first_rca);
- if (IS_ERR(card)) {
- err = PTR_ERR(card);
- break;
- }
- list_add(&card->node, &host->cards);
- }
-
- card->state &= ~MMC_STATE_DEAD;
-
- if (host->mode == MMC_MODE_SD) {
- mmc_card_set_sd(card);
-
- cmd.opcode = SD_SEND_RELATIVE_ADDR;
- cmd.arg = 0;
- cmd.flags = MMC_RSP_R6 | MMC_CMD_BCR;
-
- err = mmc_wait_for_cmd(host, &cmd, CMD_RETRIES);
- if (err != MMC_ERR_NONE)
- mmc_card_set_dead(card);
- else {
- card->rca = cmd.resp[0] >> 16;
-
- if (!host->ops->get_ro) {
- printk(KERN_WARNING "%s: host does not "
- "support reading read-only "
- "switch. assuming write-enable.\n",
- mmc_hostname(host));
- } else {
- if (host->ops->get_ro(host))
- mmc_card_set_readonly(card);
- }
- }
- } else {
- cmd.opcode = MMC_SET_RELATIVE_ADDR;
- cmd.arg = card->rca << 16;
- cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
-
- err = mmc_wait_for_cmd(host, &cmd, CMD_RETRIES);
- if (err != MMC_ERR_NONE)
- mmc_card_set_dead(card);
- }
- }
-}
-
-static void mmc_read_csds(struct mmc_host *host)
-{
- struct mmc_card *card;
-
- list_for_each_entry(card, &host->cards, node) {
- struct mmc_command cmd;
- int err;
-
- if (card->state & (MMC_STATE_DEAD|MMC_STATE_PRESENT))
- continue;
-
- cmd.opcode = MMC_SEND_CSD;
- cmd.arg = card->rca << 16;
- cmd.flags = MMC_RSP_R2 | MMC_CMD_AC;
-
- err = mmc_wait_for_cmd(host, &cmd, CMD_RETRIES);
- if (err != MMC_ERR_NONE) {
- mmc_card_set_dead(card);
- continue;
- }
-
- memcpy(card->raw_csd, cmd.resp, sizeof(card->raw_csd));
-
- mmc_decode_csd(card);
- mmc_decode_cid(card);
- }
-}
-
-static void mmc_process_ext_csds(struct mmc_host *host)
-{
- int err;
- struct mmc_card *card;
-
- struct mmc_request mrq;
- struct mmc_command cmd;
- struct mmc_data data;
-
- struct scatterlist sg;
-
- /*
- * As the ext_csd is so large and mostly unused, we don't store the
- * raw block in mmc_card.
- */
- u8 *ext_csd;
- ext_csd = kmalloc(512, GFP_KERNEL);
- if (!ext_csd) {
- printk("%s: could not allocate a buffer to receive the ext_csd."
- "mmc v4 cards will be treated as v3.\n",
- mmc_hostname(host));
- return;
- }
-
- list_for_each_entry(card, &host->cards, node) {
- if (card->state & (MMC_STATE_DEAD|MMC_STATE_PRESENT))
- continue;
- if (mmc_card_sd(card))
- continue;
- if (card->csd.mmca_vsn < CSD_SPEC_VER_4)
- continue;
-
- err = mmc_select_card(host, card);
- if (err != MMC_ERR_NONE) {
- mmc_card_set_dead(card);
- continue;
- }
-
- memset(&cmd, 0, sizeof(struct mmc_command));
-
- cmd.opcode = MMC_SEND_EXT_CSD;
- cmd.arg = 0;
- cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
-
- memset(&data, 0, sizeof(struct mmc_data));
-
- mmc_set_data_timeout(&data, card, 0);
-
- data.blksz = 512;
- data.blocks = 1;
- data.flags = MMC_DATA_READ;
- data.sg = &sg;
- data.sg_len = 1;
-
- memset(&mrq, 0, sizeof(struct mmc_request));
-
- mrq.cmd = &cmd;
- mrq.data = &data;
-
- sg_init_one(&sg, ext_csd, 512);
-
- mmc_wait_for_req(host, &mrq);
-
- if (cmd.error != MMC_ERR_NONE || data.error != MMC_ERR_NONE) {
- printk("%s: unable to read EXT_CSD, performance "
- "might suffer.\n", mmc_hostname(card->host));
- continue;
- }
-
- switch (ext_csd[EXT_CSD_CARD_TYPE]) {
- case EXT_CSD_CARD_TYPE_52 | EXT_CSD_CARD_TYPE_26:
- card->ext_csd.hs_max_dtr = 52000000;
- break;
- case EXT_CSD_CARD_TYPE_26:
- card->ext_csd.hs_max_dtr = 26000000;
- break;
- default:
- /* MMC v4 spec says this cannot happen */
- printk("%s: card is mmc v4 but doesn't support "
- "any high-speed modes.\n",
- mmc_hostname(card->host));
- continue;
- }
-
- if (host->caps & MMC_CAP_MMC_HIGHSPEED) {
- /* Activate highspeed support. */
- cmd.opcode = MMC_SWITCH;
- cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
- (EXT_CSD_HS_TIMING << 16) |
- (1 << 8) |
- EXT_CSD_CMD_SET_NORMAL;
- cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
-
- err = mmc_wait_for_cmd(host, &cmd, CMD_RETRIES);
- if (err != MMC_ERR_NONE) {
- printk("%s: failed to switch card to mmc v4 "
- "high-speed mode.\n",
- mmc_hostname(card->host));
- continue;
- }
-
- mmc_card_set_highspeed(card);
-
- host->ios.timing = MMC_TIMING_SD_HS;
- mmc_set_ios(host);
- }
-
- /* Check for host support for wide-bus modes. */
- if (host->caps & MMC_CAP_4_BIT_DATA) {
- /* Activate 4-bit support. */
- cmd.opcode = MMC_SWITCH;
- cmd.arg = (MMC_SWITCH_MODE_WRITE_BYTE << 24) |
- (EXT_CSD_BUS_WIDTH << 16) |
- (EXT_CSD_BUS_WIDTH_4 << 8) |
- EXT_CSD_CMD_SET_NORMAL;
- cmd.flags = MMC_RSP_R1B | MMC_CMD_AC;
-
- err = mmc_wait_for_cmd(host, &cmd, CMD_RETRIES);
- if (err != MMC_ERR_NONE) {
- printk("%s: failed to switch card to "
- "mmc v4 4-bit bus mode.\n",
- mmc_hostname(card->host));
- continue;
- }
-
- host->ios.bus_width = MMC_BUS_WIDTH_4;
- mmc_set_ios(host);
- }
- }
-
- kfree(ext_csd);
-
- mmc_deselect_cards(host);
-}
-
-static void mmc_read_scrs(struct mmc_host *host)
-{
- int err;
- struct mmc_card *card;
- struct mmc_request mrq;
- struct mmc_command cmd;
- struct mmc_data data;
- struct scatterlist sg;
-
- list_for_each_entry(card, &host->cards, node) {
- if (card->state & (MMC_STATE_DEAD|MMC_STATE_PRESENT))
- continue;
- if (!mmc_card_sd(card))
- continue;
-
- err = mmc_select_card(host, card);
- if (err != MMC_ERR_NONE) {
- mmc_card_set_dead(card);
- continue;
- }
-
- memset(&cmd, 0, sizeof(struct mmc_command));
-
- cmd.opcode = MMC_APP_CMD;
- cmd.arg = card->rca << 16;
- cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
-
- err = mmc_wait_for_cmd(host, &cmd, 0);
- if ((err != MMC_ERR_NONE) || !(cmd.resp[0] & R1_APP_CMD)) {
- mmc_card_set_dead(card);
- continue;
- }
-
- memset(&cmd, 0, sizeof(struct mmc_command));
-
- cmd.opcode = SD_APP_SEND_SCR;
- cmd.arg = 0;
- cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
-
- memset(&data, 0, sizeof(struct mmc_data));
-
- mmc_set_data_timeout(&data, card, 0);
-
- data.blksz = 1 << 3;
- data.blocks = 1;
- data.flags = MMC_DATA_READ;
- data.sg = &sg;
- data.sg_len = 1;
-
- memset(&mrq, 0, sizeof(struct mmc_request));
-
- mrq.cmd = &cmd;
- mrq.data = &data;
-
- sg_init_one(&sg, (u8*)card->raw_scr, 8);
-
- mmc_wait_for_req(host, &mrq);
-
- if (cmd.error != MMC_ERR_NONE || data.error != MMC_ERR_NONE) {
- mmc_card_set_dead(card);
- continue;
- }
-
- card->raw_scr[0] = ntohl(card->raw_scr[0]);
- card->raw_scr[1] = ntohl(card->raw_scr[1]);
-
- mmc_decode_scr(card);
- }
-
- mmc_deselect_cards(host);
-}
-
-static void mmc_read_switch_caps(struct mmc_host *host)
-{
- int err;
- struct mmc_card *card;
- struct mmc_request mrq;
- struct mmc_command cmd;
- struct mmc_data data;
- unsigned char *status;
- struct scatterlist sg;
-
- if (!(host->caps & MMC_CAP_SD_HIGHSPEED))
- return;
-
- status = kmalloc(64, GFP_KERNEL);
- if (!status) {
- printk(KERN_WARNING "%s: Unable to allocate buffer for "
- "reading switch capabilities.\n",
- mmc_hostname(host));
- return;
- }
-
- list_for_each_entry(card, &host->cards, node) {
- if (card->state & (MMC_STATE_DEAD|MMC_STATE_PRESENT))
- continue;
- if (!mmc_card_sd(card))
- continue;
- if (card->scr.sda_vsn < SCR_SPEC_VER_1)
- continue;
-
- err = mmc_select_card(host, card);
- if (err != MMC_ERR_NONE) {
- mmc_card_set_dead(card);
- continue;
- }
-
- memset(&cmd, 0, sizeof(struct mmc_command));
-
- cmd.opcode = SD_SWITCH;
- cmd.arg = 0x00FFFFF1;
- cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
-
- memset(&data, 0, sizeof(struct mmc_data));
-
- mmc_set_data_timeout(&data, card, 0);
-
- data.blksz = 64;
- data.blocks = 1;
- data.flags = MMC_DATA_READ;
- data.sg = &sg;
- data.sg_len = 1;
-
- memset(&mrq, 0, sizeof(struct mmc_request));
-
- mrq.cmd = &cmd;
- mrq.data = &data;
-
- sg_init_one(&sg, status, 64);
-
- mmc_wait_for_req(host, &mrq);
-
- if (cmd.error != MMC_ERR_NONE || data.error != MMC_ERR_NONE) {
- printk("%s: unable to read switch capabilities, "
- "performance might suffer.\n",
- mmc_hostname(card->host));
- continue;
- }
-
- if (status[13] & 0x02)
- card->sw_caps.hs_max_dtr = 50000000;
-
- memset(&cmd, 0, sizeof(struct mmc_command));
-
- cmd.opcode = SD_SWITCH;
- cmd.arg = 0x80FFFFF1;
- cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
-
- memset(&data, 0, sizeof(struct mmc_data));
-
- mmc_set_data_timeout(&data, card, 0);
-
- data.blksz = 64;
- data.blocks = 1;
- data.flags = MMC_DATA_READ;
- data.sg = &sg;
- data.sg_len = 1;
-
- memset(&mrq, 0, sizeof(struct mmc_request));
-
- mrq.cmd = &cmd;
- mrq.data = &data;
-
- sg_init_one(&sg, status, 64);
-
- mmc_wait_for_req(host, &mrq);
-
- if (cmd.error != MMC_ERR_NONE || data.error != MMC_ERR_NONE ||
- (status[16] & 0xF) != 1) {
- printk(KERN_WARNING "%s: Problem switching card "
- "into high-speed mode!\n",
- mmc_hostname(host));
- continue;
- }
-
- mmc_card_set_highspeed(card);
-
- host->ios.timing = MMC_TIMING_SD_HS;
- mmc_set_ios(host);
- }
-
- kfree(status);
-
- mmc_deselect_cards(host);
-}
-
-static unsigned int mmc_calculate_clock(struct mmc_host *host)
-{
- struct mmc_card *card;
- unsigned int max_dtr = host->f_max;
-
- list_for_each_entry(card, &host->cards, node)
- if (!mmc_card_dead(card)) {
- if (mmc_card_highspeed(card) && mmc_card_sd(card)) {
- if (max_dtr > card->sw_caps.hs_max_dtr)
- max_dtr = card->sw_caps.hs_max_dtr;
- } else if (mmc_card_highspeed(card) && !mmc_card_sd(card)) {
- if (max_dtr > card->ext_csd.hs_max_dtr)
- max_dtr = card->ext_csd.hs_max_dtr;
- } else if (max_dtr > card->csd.max_dtr) {
- max_dtr = card->csd.max_dtr;
- }
- }
-
- pr_debug("%s: selected %d.%03dMHz transfer rate\n",
- mmc_hostname(host),
- max_dtr / 1000000, (max_dtr / 1000) % 1000);
-
- return max_dtr;
-}
-
-/*
- * Check whether cards we already know about are still present.
- * We do this by requesting status, and checking whether a card
- * responds.
- *
- * A request for status does not cause a state change in data
- * transfer mode.
- */
-static void mmc_check_cards(struct mmc_host *host)
-{
- struct list_head *l, *n;
-
- mmc_deselect_cards(host);
-
- list_for_each_safe(l, n, &host->cards) {
- struct mmc_card *card = mmc_list_to_card(l);
- struct mmc_command cmd;
- int err;
-
- cmd.opcode = MMC_SEND_STATUS;
- cmd.arg = card->rca << 16;
- cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
-
- err = mmc_wait_for_cmd(host, &cmd, CMD_RETRIES);
- if (err == MMC_ERR_NONE)
- continue;
-
- mmc_card_set_dead(card);
- }
-}
-
-static void mmc_setup(struct mmc_host *host)
-{
- if (host->ios.power_mode != MMC_POWER_ON) {
- int err;
- u32 ocr;
-
- host->mode = MMC_MODE_SD;
-
- mmc_power_up(host);
- mmc_idle_cards(host);
-
- err = mmc_send_if_cond(host, host->ocr_avail, NULL);
- if (err != MMC_ERR_NONE) {
- return;
- }
- err = mmc_send_app_op_cond(host, 0, &ocr);
-
- /*
- * If we fail to detect any SD cards then try
- * searching for MMC cards.
- */
- if (err != MMC_ERR_NONE) {
- host->mode = MMC_MODE_MMC;
-
- err = mmc_send_op_cond(host, 0, &ocr);
- if (err != MMC_ERR_NONE)
- return;
- }
-
- host->ocr = mmc_select_voltage(host, ocr);
-
- /*
- * Since we're changing the OCR value, we seem to
- * need to tell some cards to go back to the idle
- * state. We wait 1ms to give cards time to
- * respond.
- */
- if (host->ocr)
- mmc_idle_cards(host);
- } else {
- host->ios.bus_mode = MMC_BUSMODE_OPENDRAIN;
- host->ios.clock = host->f_min;
- mmc_set_ios(host);
-
- /*
- * We should remember the OCR mask from the existing
- * cards, and detect the new cards OCR mask, combine
- * the two and re-select the VDD. However, if we do
- * change VDD, we should do an idle, and then do a
- * full re-initialisation. We would need to notify
- * drivers so that they can re-setup the cards as
- * well, while keeping their queues at bay.
- *
- * For the moment, we take the easy way out - if the
- * new cards don't like our currently selected VDD,
- * they drop off the bus.
- */
- }
-
- if (host->ocr == 0)
- return;
-
- /*
- * Send the selected OCR multiple times... until the cards
- * all get the idea that they should be ready for CMD2.
- * (My SanDisk card seems to need this.)
- */
- if (host->mode == MMC_MODE_SD) {
- int err, sd2;
- err = mmc_send_if_cond(host, host->ocr, &sd2);
- if (err == MMC_ERR_NONE) {
- /*
- * If SD_SEND_IF_COND indicates an SD 2.0
- * compliant card and we should set bit 30
- * of the ocr to indicate that we can handle
- * block-addressed SDHC cards.
- */
- mmc_send_app_op_cond(host, host->ocr | (sd2 << 30), NULL);
- }
- } else {
- mmc_send_op_cond(host, host->ocr, NULL);
- }
-
- mmc_discover_cards(host);
-
- /*
- * Ok, now switch to push-pull mode.
- */
- host->ios.bus_mode = MMC_BUSMODE_PUSHPULL;
- mmc_set_ios(host);
-
- mmc_read_csds(host);
-
- if (host->mode == MMC_MODE_SD) {
- mmc_read_scrs(host);
- mmc_read_switch_caps(host);
- } else
- mmc_process_ext_csds(host);
-}
-
-
-/**
- * mmc_detect_change - process change of state on a MMC socket
- * @host: host which changed state.
- * @delay: optional delay to wait before detection (jiffies)
- *
- * All we know is that card(s) have been inserted or removed
- * from the socket(s). We don't know which socket or cards.
- */
-void mmc_detect_change(struct mmc_host *host, unsigned long delay)
-{
- mmc_schedule_delayed_work(&host->detect, delay);
-}
-
-EXPORT_SYMBOL(mmc_detect_change);
-
-
-static void mmc_rescan(struct work_struct *work)
-{
- struct mmc_host *host =
- container_of(work, struct mmc_host, detect.work);
- struct list_head *l, *n;
- unsigned char power_mode;
-
- mmc_claim_host(host);
-
- /*
- * Check for removed cards and newly inserted ones. We check for
- * removed cards first so we can intelligently re-select the VDD.
- */
- power_mode = host->ios.power_mode;
- if (power_mode == MMC_POWER_ON)
- mmc_check_cards(host);
-
- mmc_setup(host);
-
- /*
- * Some broken cards process CMD1 even in stand-by state. There is
- * no reply, but an ILLEGAL_COMMAND error is cached and returned
- * after next command. We poll for card status here to clear any
- * possibly pending error.
- */
- if (power_mode == MMC_POWER_ON)
- mmc_check_cards(host);
-
- if (!list_empty(&host->cards)) {
- /*
- * (Re-)calculate the fastest clock rate which the
- * attached cards and the host support.
- */
- host->ios.clock = mmc_calculate_clock(host);
- mmc_set_ios(host);
- }
-
- mmc_release_host(host);
-
- list_for_each_safe(l, n, &host->cards) {
- struct mmc_card *card = mmc_list_to_card(l);
-
- /*
- * If this is a new and good card, register it.
- */
- if (!mmc_card_present(card) && !mmc_card_dead(card)) {
- if (mmc_register_card(card))
- mmc_card_set_dead(card);
- else
- mmc_card_set_present(card);
- }
-
- /*
- * If this card is dead, destroy it.
- */
- if (mmc_card_dead(card)) {
- list_del(&card->node);
- mmc_remove_card(card);
- }
- }
-
- /*
- * If we discover that there are no cards on the
- * bus, turn off the clock and power down.
- */
- if (list_empty(&host->cards))
- mmc_power_off(host);
-}
-
-
-/**
- * mmc_alloc_host - initialise the per-host structure.
- * @extra: sizeof private data structure
- * @dev: pointer to host device model structure
- *
- * Initialise the per-host structure.
- */
-struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
-{
- struct mmc_host *host;
-
- host = mmc_alloc_host_sysfs(extra, dev);
- if (host) {
- spin_lock_init(&host->lock);
- init_waitqueue_head(&host->wq);
- INIT_LIST_HEAD(&host->cards);
- INIT_DELAYED_WORK(&host->detect, mmc_rescan);
-
- /*
- * By default, hosts do not support SGIO or large requests.
- * They have to set these according to their abilities.
- */
- host->max_hw_segs = 1;
- host->max_phys_segs = 1;
- host->max_seg_size = PAGE_CACHE_SIZE;
-
- host->max_req_size = PAGE_CACHE_SIZE;
- host->max_blk_size = 512;
- host->max_blk_count = PAGE_CACHE_SIZE / 512;
- }
-
- return host;
-}
-
-EXPORT_SYMBOL(mmc_alloc_host);
-
-/**
- * mmc_add_host - initialise host hardware
- * @host: mmc host
- */
-int mmc_add_host(struct mmc_host *host)
-{
- int ret;
-
- ret = mmc_add_host_sysfs(host);
- if (ret == 0) {
- mmc_power_off(host);
- mmc_detect_change(host, 0);
- }
-
- return ret;
-}
-
-EXPORT_SYMBOL(mmc_add_host);
-
-/**
- * mmc_remove_host - remove host hardware
- * @host: mmc host
- *
- * Unregister and remove all cards associated with this host,
- * and power down the MMC bus.
- */
-void mmc_remove_host(struct mmc_host *host)
-{
- struct list_head *l, *n;
-
- list_for_each_safe(l, n, &host->cards) {
- struct mmc_card *card = mmc_list_to_card(l);
-
- mmc_remove_card(card);
- }
-
- mmc_power_off(host);
- mmc_remove_host_sysfs(host);
-}
-
-EXPORT_SYMBOL(mmc_remove_host);
-
-/**
- * mmc_free_host - free the host structure
- * @host: mmc host
- *
- * Free the host once all references to it have been dropped.
- */
-void mmc_free_host(struct mmc_host *host)
-{
- mmc_flush_scheduled_work();
- mmc_free_host_sysfs(host);
-}
-
-EXPORT_SYMBOL(mmc_free_host);
-
-#ifdef CONFIG_PM
-
-/**
- * mmc_suspend_host - suspend a host
- * @host: mmc host
- * @state: suspend mode (PM_SUSPEND_xxx)
- */
-int mmc_suspend_host(struct mmc_host *host, pm_message_t state)
-{
- mmc_claim_host(host);
- mmc_deselect_cards(host);
- mmc_power_off(host);
- mmc_release_host(host);
-
- return 0;
-}
-
-EXPORT_SYMBOL(mmc_suspend_host);
-
-/**
- * mmc_resume_host - resume a previously suspended host
- * @host: mmc host
- */
-int mmc_resume_host(struct mmc_host *host)
-{
- mmc_rescan(&host->detect.work);
-
- return 0;
-}
-
-EXPORT_SYMBOL(mmc_resume_host);
-
-#endif
-
-MODULE_LICENSE("GPL");
diff --git a/drivers/mmc/tifm_sd.c b/drivers/mmc/tifm_sd.c
deleted file mode 100644
index 0581d09..0000000
--- a/drivers/mmc/tifm_sd.c
+++ /dev/null
@@ -1,987 +0,0 @@
-/*
- * tifm_sd.c - TI FlashMedia driver
- *
- * Copyright (C) 2006 Alex Dubov <oakad@yahoo.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- */
-
-
-#include <linux/tifm.h>
-#include <linux/mmc/protocol.h>
-#include <linux/mmc/host.h>
-#include <linux/highmem.h>
-#include <asm/io.h>
-
-#define DRIVER_NAME "tifm_sd"
-#define DRIVER_VERSION "0.7"
-
-static int no_dma = 0;
-static int fixed_timeout = 0;
-module_param(no_dma, bool, 0644);
-module_param(fixed_timeout, bool, 0644);
-
-/* Constants here are mostly from OMAP5912 datasheet */
-#define TIFM_MMCSD_RESET 0x0002
-#define TIFM_MMCSD_CLKMASK 0x03ff
-#define TIFM_MMCSD_POWER 0x0800
-#define TIFM_MMCSD_4BBUS 0x8000
-#define TIFM_MMCSD_RXDE 0x8000 /* rx dma enable */
-#define TIFM_MMCSD_TXDE 0x0080 /* tx dma enable */
-#define TIFM_MMCSD_BUFINT 0x0c00 /* set bits: AE, AF */
-#define TIFM_MMCSD_DPE 0x0020 /* data timeout counted in kilocycles */
-#define TIFM_MMCSD_INAB 0x0080 /* abort / initialize command */
-#define TIFM_MMCSD_READ 0x8000
-
-#define TIFM_MMCSD_DATAMASK 0x401d /* set bits: CERR, EOFB, BRS, CB, EOC */
-#define TIFM_MMCSD_ERRMASK 0x01e0 /* set bits: CCRC, CTO, DCRC, DTO */
-#define TIFM_MMCSD_EOC 0x0001 /* end of command phase */
-#define TIFM_MMCSD_CB 0x0004 /* card enter busy state */
-#define TIFM_MMCSD_BRS 0x0008 /* block received/sent */
-#define TIFM_MMCSD_EOFB 0x0010 /* card exit busy state */
-#define TIFM_MMCSD_DTO 0x0020 /* data time-out */
-#define TIFM_MMCSD_DCRC 0x0040 /* data crc error */
-#define TIFM_MMCSD_CTO 0x0080 /* command time-out */
-#define TIFM_MMCSD_CCRC 0x0100 /* command crc error */
-#define TIFM_MMCSD_AF 0x0400 /* fifo almost full */
-#define TIFM_MMCSD_AE 0x0800 /* fifo almost empty */
-#define TIFM_MMCSD_CERR 0x4000 /* card status error */
-
-#define TIFM_MMCSD_FIFO_SIZE 0x0020
-
-#define TIFM_MMCSD_RSP_R0 0x0000
-#define TIFM_MMCSD_RSP_R1 0x0100
-#define TIFM_MMCSD_RSP_R2 0x0200
-#define TIFM_MMCSD_RSP_R3 0x0300
-#define TIFM_MMCSD_RSP_R4 0x0400
-#define TIFM_MMCSD_RSP_R5 0x0500
-#define TIFM_MMCSD_RSP_R6 0x0600
-
-#define TIFM_MMCSD_RSP_BUSY 0x0800
-
-#define TIFM_MMCSD_CMD_BC 0x0000
-#define TIFM_MMCSD_CMD_BCR 0x1000
-#define TIFM_MMCSD_CMD_AC 0x2000
-#define TIFM_MMCSD_CMD_ADTC 0x3000
-
-typedef enum {
- IDLE = 0,
- CMD, /* main command ended */
- BRS, /* block transfer finished */
- SCMD, /* stop command ended */
- CARD, /* card left busy state */
- FIFO, /* FIFO operation completed (uncertain) */
- READY
-} card_state_t;
-
-enum {
- FIFO_RDY = 0x0001, /* hardware dependent value */
- EJECT = 0x0004,
- EJECT_DONE = 0x0008,
- CARD_BUSY = 0x0010,
- OPENDRAIN = 0x0040, /* hardware dependent value */
- CARD_EVENT = 0x0100, /* hardware dependent value */
- CARD_RO = 0x0200, /* hardware dependent value */
- FIFO_EVENT = 0x10000 }; /* hardware dependent value */
-
-struct tifm_sd {
- struct tifm_dev *dev;
-
- unsigned int flags;
- card_state_t state;
- unsigned int clk_freq;
- unsigned int clk_div;
- unsigned long timeout_jiffies;
-
- struct tasklet_struct finish_tasklet;
- struct timer_list timer;
- struct mmc_request *req;
- wait_queue_head_t notify;
-
- size_t written_blocks;
- size_t buffer_size;
- size_t buffer_pos;
-
-};
-
-static char* tifm_sd_data_buffer(struct mmc_data *data)
-{
- return page_address(data->sg->page) + data->sg->offset;
-}
-
-static int tifm_sd_transfer_data(struct tifm_dev *sock, struct tifm_sd *host,
- unsigned int host_status)
-{
- struct mmc_command *cmd = host->req->cmd;
- unsigned int t_val = 0, cnt = 0;
- char *buffer;
-
- if (host_status & TIFM_MMCSD_BRS) {
- /* in non-dma rx mode BRS fires when fifo is still not empty */
- if (no_dma && (cmd->data->flags & MMC_DATA_READ)) {
- buffer = tifm_sd_data_buffer(host->req->data);
- while (host->buffer_size > host->buffer_pos) {
- t_val = readl(sock->addr + SOCK_MMCSD_DATA);
- buffer[host->buffer_pos++] = t_val & 0xff;
- buffer[host->buffer_pos++] =
- (t_val >> 8) & 0xff;
- }
- }
- return 1;
- } else if (no_dma) {
- buffer = tifm_sd_data_buffer(host->req->data);
- if ((cmd->data->flags & MMC_DATA_READ) &&
- (host_status & TIFM_MMCSD_AF)) {
- for (cnt = 0; cnt < TIFM_MMCSD_FIFO_SIZE; cnt++) {
- t_val = readl(sock->addr + SOCK_MMCSD_DATA);
- if (host->buffer_size > host->buffer_pos) {
- buffer[host->buffer_pos++] =
- t_val & 0xff;
- buffer[host->buffer_pos++] =
- (t_val >> 8) & 0xff;
- }
- }
- } else if ((cmd->data->flags & MMC_DATA_WRITE)
- && (host_status & TIFM_MMCSD_AE)) {
- for (cnt = 0; cnt < TIFM_MMCSD_FIFO_SIZE; cnt++) {
- if (host->buffer_size > host->buffer_pos) {
- t_val = buffer[host->buffer_pos++]
- & 0x00ff;
- t_val |= ((buffer[host->buffer_pos++])
- << 8) & 0xff00;
- writel(t_val,
- sock->addr + SOCK_MMCSD_DATA);
- }
- }
- }
- }
- return 0;
-}
-
-static unsigned int tifm_sd_op_flags(struct mmc_command *cmd)
-{
- unsigned int rc = 0;
-
- switch (mmc_resp_type(cmd)) {
- case MMC_RSP_NONE:
- rc |= TIFM_MMCSD_RSP_R0;
- break;
- case MMC_RSP_R1B:
- rc |= TIFM_MMCSD_RSP_BUSY; // deliberate fall-through
- case MMC_RSP_R1:
- rc |= TIFM_MMCSD_RSP_R1;
- break;
- case MMC_RSP_R2:
- rc |= TIFM_MMCSD_RSP_R2;
- break;
- case MMC_RSP_R3:
- rc |= TIFM_MMCSD_RSP_R3;
- break;
- default:
- BUG();
- }
-
- switch (mmc_cmd_type(cmd)) {
- case MMC_CMD_BC:
- rc |= TIFM_MMCSD_CMD_BC;
- break;
- case MMC_CMD_BCR:
- rc |= TIFM_MMCSD_CMD_BCR;
- break;
- case MMC_CMD_AC:
- rc |= TIFM_MMCSD_CMD_AC;
- break;
- case MMC_CMD_ADTC:
- rc |= TIFM_MMCSD_CMD_ADTC;
- break;
- default:
- BUG();
- }
- return rc;
-}
-
-static void tifm_sd_exec(struct tifm_sd *host, struct mmc_command *cmd)
-{
- struct tifm_dev *sock = host->dev;
- unsigned int cmd_mask = tifm_sd_op_flags(cmd) |
- (host->flags & OPENDRAIN);
-
- if (cmd->data && (cmd->data->flags & MMC_DATA_READ))
- cmd_mask |= TIFM_MMCSD_READ;
-
- dev_dbg(&sock->dev, "executing opcode 0x%x, arg: 0x%x, mask: 0x%x\n",
- cmd->opcode, cmd->arg, cmd_mask);
-
- writel((cmd->arg >> 16) & 0xffff, sock->addr + SOCK_MMCSD_ARG_HIGH);
- writel(cmd->arg & 0xffff, sock->addr + SOCK_MMCSD_ARG_LOW);
- writel(cmd->opcode | cmd_mask, sock->addr + SOCK_MMCSD_COMMAND);
-}
-
-static void tifm_sd_fetch_resp(struct mmc_command *cmd, struct tifm_dev *sock)
-{
- cmd->resp[0] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x1c) << 16)
- | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x18);
- cmd->resp[1] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x14) << 16)
- | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x10);
- cmd->resp[2] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x0c) << 16)
- | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x08);
- cmd->resp[3] = (readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x04) << 16)
- | readl(sock->addr + SOCK_MMCSD_RESPONSE + 0x00);
-}
-
-static void tifm_sd_process_cmd(struct tifm_dev *sock, struct tifm_sd *host,
- unsigned int host_status)
-{
- struct mmc_command *cmd = host->req->cmd;
-
-change_state:
- switch (host->state) {
- case IDLE:
- return;
- case CMD:
- if (host_status & (TIFM_MMCSD_EOC | TIFM_MMCSD_CERR)) {
- tifm_sd_fetch_resp(cmd, sock);
- if (cmd->data) {
- host->state = BRS;
- } else {
- host->state = READY;
- }
- goto change_state;
- }
- break;
- case BRS:
- if (tifm_sd_transfer_data(sock, host, host_status)) {
- if (cmd->data->flags & MMC_DATA_WRITE) {
- host->state = CARD;
- } else {
- if (no_dma) {
- if (host->req->stop) {
- tifm_sd_exec(host, host->req->stop);
- host->state = SCMD;
- } else {
- host->state = READY;
- }
- } else {
- host->state = FIFO;
- }
- }
- goto change_state;
- }
- break;
- case SCMD:
- if (host_status & TIFM_MMCSD_EOC) {
- tifm_sd_fetch_resp(host->req->stop, sock);
- host->state = READY;
- goto change_state;
- }
- break;
- case CARD:
- dev_dbg(&sock->dev, "waiting for CARD, have %zd blocks\n",
- host->written_blocks);
- if (!(host->flags & CARD_BUSY)
- && (host->written_blocks == cmd->data->blocks)) {
- if (no_dma) {
- if (host->req->stop) {
- tifm_sd_exec(host, host->req->stop);
- host->state = SCMD;
- } else {
- host->state = READY;
- }
- } else {
- host->state = FIFO;
- }
- goto change_state;
- }
- break;
- case FIFO:
- if (host->flags & FIFO_RDY) {
- host->flags &= ~FIFO_RDY;
- if (host->req->stop) {
- tifm_sd_exec(host, host->req->stop);
- host->state = SCMD;
- } else {
- host->state = READY;
- }
- goto change_state;
- }
- break;
- case READY:
- tasklet_schedule(&host->finish_tasklet);
- return;
- }
-
-}
-
-/* Called from interrupt handler */
-static void tifm_sd_signal_irq(struct tifm_dev *sock,
- unsigned int sock_irq_status)
-{
- struct tifm_sd *host;
- unsigned int host_status = 0, fifo_status = 0;
- int error_code = 0;
-
- spin_lock(&sock->lock);
- host = mmc_priv((struct mmc_host*)tifm_get_drvdata(sock));
-
- if (sock_irq_status & FIFO_EVENT) {
- fifo_status = readl(sock->addr + SOCK_DMA_FIFO_STATUS);
- writel(fifo_status, sock->addr + SOCK_DMA_FIFO_STATUS);
-
- host->flags |= fifo_status & FIFO_RDY;
- }
-
- if (sock_irq_status & CARD_EVENT) {
- host_status = readl(sock->addr + SOCK_MMCSD_STATUS);
- writel(host_status, sock->addr + SOCK_MMCSD_STATUS);
-
- if (!host->req)
- goto done;
-
- if (host_status & TIFM_MMCSD_ERRMASK) {
- if (host_status & (TIFM_MMCSD_CTO | TIFM_MMCSD_DTO))
- error_code = MMC_ERR_TIMEOUT;
- else if (host_status
- & (TIFM_MMCSD_CCRC | TIFM_MMCSD_DCRC))
- error_code = MMC_ERR_BADCRC;
-
- writel(TIFM_FIFO_INT_SETALL,
- sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
- writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
-
- if (host->req->stop) {
- if (host->state == SCMD) {
- host->req->stop->error = error_code;
- } else if (host->state == BRS
- || host->state == CARD
- || host->state == FIFO) {
- host->req->cmd->error = error_code;
- tifm_sd_exec(host, host->req->stop);
- host->state = SCMD;
- goto done;
- } else {
- host->req->cmd->error = error_code;
- }
- } else {
- host->req->cmd->error = error_code;
- }
- host->state = READY;
- }
-
- if (host_status & TIFM_MMCSD_CB)
- host->flags |= CARD_BUSY;
- if ((host_status & TIFM_MMCSD_EOFB)
- && (host->flags & CARD_BUSY)) {
- host->written_blocks++;
- host->flags &= ~CARD_BUSY;
- }
- }
-
- if (host->req)
- tifm_sd_process_cmd(sock, host, host_status);
-done:
- dev_dbg(&sock->dev, "host_status %x, fifo_status %x\n",
- host_status, fifo_status);
- spin_unlock(&sock->lock);
-}
-
-static void tifm_sd_prepare_data(struct tifm_sd *host, struct mmc_command *cmd)
-{
- struct tifm_dev *sock = host->dev;
- unsigned int dest_cnt;
-
- /* DMA style IO */
- dev_dbg(&sock->dev, "setting dma for %d blocks\n",
- cmd->data->blocks);
- writel(TIFM_FIFO_INT_SETALL,
- sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
- writel(ilog2(cmd->data->blksz) - 2,
- sock->addr + SOCK_FIFO_PAGE_SIZE);
- writel(TIFM_FIFO_ENABLE, sock->addr + SOCK_FIFO_CONTROL);
- writel(TIFM_FIFO_INTMASK, sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
-
- dest_cnt = (cmd->data->blocks) << 8;
-
- writel(sg_dma_address(cmd->data->sg), sock->addr + SOCK_DMA_ADDRESS);
-
- writel(cmd->data->blocks - 1, sock->addr + SOCK_MMCSD_NUM_BLOCKS);
- writel(cmd->data->blksz - 1, sock->addr + SOCK_MMCSD_BLOCK_LEN);
-
- if (cmd->data->flags & MMC_DATA_WRITE) {
- writel(TIFM_MMCSD_TXDE, sock->addr + SOCK_MMCSD_BUFFER_CONFIG);
- writel(dest_cnt | TIFM_DMA_TX | TIFM_DMA_EN,
- sock->addr + SOCK_DMA_CONTROL);
- } else {
- writel(TIFM_MMCSD_RXDE, sock->addr + SOCK_MMCSD_BUFFER_CONFIG);
- writel(dest_cnt | TIFM_DMA_EN, sock->addr + SOCK_DMA_CONTROL);
- }
-}
-
-static void tifm_sd_set_data_timeout(struct tifm_sd *host,
- struct mmc_data *data)
-{
- struct tifm_dev *sock = host->dev;
- unsigned int data_timeout = data->timeout_clks;
-
- if (fixed_timeout)
- return;
-
- data_timeout += data->timeout_ns /
- ((1000000000UL / host->clk_freq) * host->clk_div);
-
- if (data_timeout < 0xffff) {
- writel(data_timeout, sock->addr + SOCK_MMCSD_DATA_TO);
- writel((~TIFM_MMCSD_DPE)
- & readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG),
- sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG);
- } else {
- data_timeout = (data_timeout >> 10) + 1;
- if (data_timeout > 0xffff)
- data_timeout = 0; /* set to unlimited */
- writel(data_timeout, sock->addr + SOCK_MMCSD_DATA_TO);
- writel(TIFM_MMCSD_DPE
- | readl(sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG),
- sock->addr + SOCK_MMCSD_SDIO_MODE_CONFIG);
- }
-}
-
-static void tifm_sd_request(struct mmc_host *mmc, struct mmc_request *mrq)
-{
- struct tifm_sd *host = mmc_priv(mmc);
- struct tifm_dev *sock = host->dev;
- unsigned long flags;
- int sg_count = 0;
- struct mmc_data *r_data = mrq->cmd->data;
-
- spin_lock_irqsave(&sock->lock, flags);
- if (host->flags & EJECT) {
- spin_unlock_irqrestore(&sock->lock, flags);
- goto err_out;
- }
-
- if (host->req) {
- printk(KERN_ERR DRIVER_NAME ": unfinished request detected\n");
- spin_unlock_irqrestore(&sock->lock, flags);
- goto err_out;
- }
-
- if (r_data) {
- tifm_sd_set_data_timeout(host, r_data);
-
- sg_count = tifm_map_sg(sock, r_data->sg, r_data->sg_len,
- mrq->cmd->flags & MMC_DATA_WRITE
- ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
- if (sg_count != 1) {
- printk(KERN_ERR DRIVER_NAME
- ": scatterlist map failed\n");
- spin_unlock_irqrestore(&sock->lock, flags);
- goto err_out;
- }
-
- host->written_blocks = 0;
- host->flags &= ~CARD_BUSY;
- tifm_sd_prepare_data(host, mrq->cmd);
- }
-
- host->req = mrq;
- mod_timer(&host->timer, jiffies + host->timeout_jiffies);
- host->state = CMD;
- writel(TIFM_CTRL_LED | readl(sock->addr + SOCK_CONTROL),
- sock->addr + SOCK_CONTROL);
- tifm_sd_exec(host, mrq->cmd);
- spin_unlock_irqrestore(&sock->lock, flags);
- return;
-
-err_out:
- if (sg_count > 0)
- tifm_unmap_sg(sock, r_data->sg, r_data->sg_len,
- (r_data->flags & MMC_DATA_WRITE)
- ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
-
- mrq->cmd->error = MMC_ERR_TIMEOUT;
- mmc_request_done(mmc, mrq);
-}
-
-static void tifm_sd_end_cmd(unsigned long data)
-{
- struct tifm_sd *host = (struct tifm_sd*)data;
- struct tifm_dev *sock = host->dev;
- struct mmc_host *mmc = tifm_get_drvdata(sock);
- struct mmc_request *mrq;
- struct mmc_data *r_data = NULL;
- unsigned long flags;
-
- spin_lock_irqsave(&sock->lock, flags);
-
- del_timer(&host->timer);
- mrq = host->req;
- host->req = NULL;
- host->state = IDLE;
-
- if (!mrq) {
- printk(KERN_ERR DRIVER_NAME ": no request to complete?\n");
- spin_unlock_irqrestore(&sock->lock, flags);
- return;
- }
-
- r_data = mrq->cmd->data;
- if (r_data) {
- if (r_data->flags & MMC_DATA_WRITE) {
- r_data->bytes_xfered = host->written_blocks
- * r_data->blksz;
- } else {
- r_data->bytes_xfered = r_data->blocks -
- readl(sock->addr + SOCK_MMCSD_NUM_BLOCKS) - 1;
- r_data->bytes_xfered *= r_data->blksz;
- r_data->bytes_xfered += r_data->blksz -
- readl(sock->addr + SOCK_MMCSD_BLOCK_LEN) + 1;
- }
- tifm_unmap_sg(sock, r_data->sg, r_data->sg_len,
- (r_data->flags & MMC_DATA_WRITE)
- ? PCI_DMA_TODEVICE : PCI_DMA_FROMDEVICE);
- }
-
- writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL),
- sock->addr + SOCK_CONTROL);
-
- spin_unlock_irqrestore(&sock->lock, flags);
- mmc_request_done(mmc, mrq);
-}
-
-static void tifm_sd_request_nodma(struct mmc_host *mmc, struct mmc_request *mrq)
-{
- struct tifm_sd *host = mmc_priv(mmc);
- struct tifm_dev *sock = host->dev;
- unsigned long flags;
- struct mmc_data *r_data = mrq->cmd->data;
-
- spin_lock_irqsave(&sock->lock, flags);
- if (host->flags & EJECT) {
- spin_unlock_irqrestore(&sock->lock, flags);
- goto err_out;
- }
-
- if (host->req) {
- printk(KERN_ERR DRIVER_NAME ": unfinished request detected\n");
- spin_unlock_irqrestore(&sock->lock, flags);
- goto err_out;
- }
-
- if (r_data) {
- tifm_sd_set_data_timeout(host, r_data);
-
- host->buffer_size = mrq->cmd->data->blocks
- * mrq->cmd->data->blksz;
-
- writel(TIFM_MMCSD_BUFINT
- | readl(sock->addr + SOCK_MMCSD_INT_ENABLE),
- sock->addr + SOCK_MMCSD_INT_ENABLE);
- writel(((TIFM_MMCSD_FIFO_SIZE - 1) << 8)
- | (TIFM_MMCSD_FIFO_SIZE - 1),
- sock->addr + SOCK_MMCSD_BUFFER_CONFIG);
-
- host->written_blocks = 0;
- host->flags &= ~CARD_BUSY;
- host->buffer_pos = 0;
- writel(r_data->blocks - 1, sock->addr + SOCK_MMCSD_NUM_BLOCKS);
- writel(r_data->blksz - 1, sock->addr + SOCK_MMCSD_BLOCK_LEN);
- }
-
- host->req = mrq;
- mod_timer(&host->timer, jiffies + host->timeout_jiffies);
- host->state = CMD;
- writel(TIFM_CTRL_LED | readl(sock->addr + SOCK_CONTROL),
- sock->addr + SOCK_CONTROL);
- tifm_sd_exec(host, mrq->cmd);
- spin_unlock_irqrestore(&sock->lock, flags);
- return;
-
-err_out:
- mrq->cmd->error = MMC_ERR_TIMEOUT;
- mmc_request_done(mmc, mrq);
-}
-
-static void tifm_sd_end_cmd_nodma(unsigned long data)
-{
- struct tifm_sd *host = (struct tifm_sd*)data;
- struct tifm_dev *sock = host->dev;
- struct mmc_host *mmc = tifm_get_drvdata(sock);
- struct mmc_request *mrq;
- struct mmc_data *r_data = NULL;
- unsigned long flags;
-
- spin_lock_irqsave(&sock->lock, flags);
-
- del_timer(&host->timer);
- mrq = host->req;
- host->req = NULL;
- host->state = IDLE;
-
- if (!mrq) {
- printk(KERN_ERR DRIVER_NAME ": no request to complete?\n");
- spin_unlock_irqrestore(&sock->lock, flags);
- return;
- }
-
- r_data = mrq->cmd->data;
- if (r_data) {
- writel((~TIFM_MMCSD_BUFINT) &
- readl(sock->addr + SOCK_MMCSD_INT_ENABLE),
- sock->addr + SOCK_MMCSD_INT_ENABLE);
-
- if (r_data->flags & MMC_DATA_WRITE) {
- r_data->bytes_xfered = host->written_blocks
- * r_data->blksz;
- } else {
- r_data->bytes_xfered = r_data->blocks -
- readl(sock->addr + SOCK_MMCSD_NUM_BLOCKS) - 1;
- r_data->bytes_xfered *= r_data->blksz;
- r_data->bytes_xfered += r_data->blksz -
- readl(sock->addr + SOCK_MMCSD_BLOCK_LEN) + 1;
- }
- host->buffer_pos = 0;
- host->buffer_size = 0;
- }
-
- writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL),
- sock->addr + SOCK_CONTROL);
-
- spin_unlock_irqrestore(&sock->lock, flags);
-
- mmc_request_done(mmc, mrq);
-}
-
-static void tifm_sd_terminate(struct tifm_sd *host)
-{
- struct tifm_dev *sock = host->dev;
- unsigned long flags;
-
- writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE);
- mmiowb();
- spin_lock_irqsave(&sock->lock, flags);
- host->flags |= EJECT;
- if (host->req) {
- writel(TIFM_FIFO_INT_SETALL,
- sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
- writel(0, sock->addr + SOCK_DMA_FIFO_INT_ENABLE_SET);
- tasklet_schedule(&host->finish_tasklet);
- }
- spin_unlock_irqrestore(&sock->lock, flags);
-}
-
-static void tifm_sd_abort(unsigned long data)
-{
- struct tifm_sd *host = (struct tifm_sd*)data;
-
- printk(KERN_ERR DRIVER_NAME
- ": card failed to respond for a long period of time");
-
- tifm_sd_terminate(host);
- tifm_eject(host->dev);
-}
-
-static void tifm_sd_ios(struct mmc_host *mmc, struct mmc_ios *ios)
-{
- struct tifm_sd *host = mmc_priv(mmc);
- struct tifm_dev *sock = host->dev;
- unsigned int clk_div1, clk_div2;
- unsigned long flags;
-
- spin_lock_irqsave(&sock->lock, flags);
-
- dev_dbg(&sock->dev, "Setting bus width %d, power %d\n", ios->bus_width,
- ios->power_mode);
- if (ios->bus_width == MMC_BUS_WIDTH_4) {
- writel(TIFM_MMCSD_4BBUS | readl(sock->addr + SOCK_MMCSD_CONFIG),
- sock->addr + SOCK_MMCSD_CONFIG);
- } else {
- writel((~TIFM_MMCSD_4BBUS)
- & readl(sock->addr + SOCK_MMCSD_CONFIG),
- sock->addr + SOCK_MMCSD_CONFIG);
- }
-
- if (ios->clock) {
- clk_div1 = 20000000 / ios->clock;
- if (!clk_div1)
- clk_div1 = 1;
-
- clk_div2 = 24000000 / ios->clock;
- if (!clk_div2)
- clk_div2 = 1;
-
- if ((20000000 / clk_div1) > ios->clock)
- clk_div1++;
- if ((24000000 / clk_div2) > ios->clock)
- clk_div2++;
- if ((20000000 / clk_div1) > (24000000 / clk_div2)) {
- host->clk_freq = 20000000;
- host->clk_div = clk_div1;
- writel((~TIFM_CTRL_FAST_CLK)
- & readl(sock->addr + SOCK_CONTROL),
- sock->addr + SOCK_CONTROL);
- } else {
- host->clk_freq = 24000000;
- host->clk_div = clk_div2;
- writel(TIFM_CTRL_FAST_CLK
- | readl(sock->addr + SOCK_CONTROL),
- sock->addr + SOCK_CONTROL);
- }
- } else {
- host->clk_div = 0;
- }
- host->clk_div &= TIFM_MMCSD_CLKMASK;
- writel(host->clk_div
- | ((~TIFM_MMCSD_CLKMASK)
- & readl(sock->addr + SOCK_MMCSD_CONFIG)),
- sock->addr + SOCK_MMCSD_CONFIG);
-
- if (ios->bus_mode == MMC_BUSMODE_OPENDRAIN)
- host->flags |= OPENDRAIN;
- else
- host->flags &= ~OPENDRAIN;
-
- /* chip_select : maybe later */
- //vdd
- //power is set before probe / after remove
- //I believe, power_off when already marked for eject is sufficient to
- // allow removal.
- if ((host->flags & EJECT) && ios->power_mode == MMC_POWER_OFF) {
- host->flags |= EJECT_DONE;
- wake_up_all(&host->notify);
- }
-
- spin_unlock_irqrestore(&sock->lock, flags);
-}
-
-static int tifm_sd_ro(struct mmc_host *mmc)
-{
- int rc;
- struct tifm_sd *host = mmc_priv(mmc);
- struct tifm_dev *sock = host->dev;
- unsigned long flags;
-
- spin_lock_irqsave(&sock->lock, flags);
-
- host->flags |= (CARD_RO & readl(sock->addr + SOCK_PRESENT_STATE));
- rc = (host->flags & CARD_RO) ? 1 : 0;
-
- spin_unlock_irqrestore(&sock->lock, flags);
- return rc;
-}
-
-static struct mmc_host_ops tifm_sd_ops = {
- .request = tifm_sd_request,
- .set_ios = tifm_sd_ios,
- .get_ro = tifm_sd_ro
-};
-
-static int tifm_sd_initialize_host(struct tifm_sd *host)
-{
- int rc;
- unsigned int host_status = 0;
- struct tifm_dev *sock = host->dev;
-
- writel(0, sock->addr + SOCK_MMCSD_INT_ENABLE);
- mmiowb();
- host->clk_div = 61;
- host->clk_freq = 20000000;
- writel(TIFM_MMCSD_RESET, sock->addr + SOCK_MMCSD_SYSTEM_CONTROL);
- writel(host->clk_div | TIFM_MMCSD_POWER,
- sock->addr + SOCK_MMCSD_CONFIG);
-
- /* wait up to 0.51 sec for reset */
- for (rc = 2; rc <= 256; rc <<= 1) {
- if (1 & readl(sock->addr + SOCK_MMCSD_SYSTEM_STATUS)) {
- rc = 0;
- break;
- }
- msleep(rc);
- }
-
- if (rc) {
- printk(KERN_ERR DRIVER_NAME
- ": controller failed to reset\n");
- return -ENODEV;
- }
-
- writel(0, sock->addr + SOCK_MMCSD_NUM_BLOCKS);
- writel(host->clk_div | TIFM_MMCSD_POWER,
- sock->addr + SOCK_MMCSD_CONFIG);
- writel(TIFM_MMCSD_RXDE, sock->addr + SOCK_MMCSD_BUFFER_CONFIG);
-
- // command timeout fixed to 64 clocks for now
- writel(64, sock->addr + SOCK_MMCSD_COMMAND_TO);
- writel(TIFM_MMCSD_INAB, sock->addr + SOCK_MMCSD_COMMAND);
-
- /* INAB should take much less than reset */
- for (rc = 1; rc <= 16; rc <<= 1) {
- host_status = readl(sock->addr + SOCK_MMCSD_STATUS);
- writel(host_status, sock->addr + SOCK_MMCSD_STATUS);
- if (!(host_status & TIFM_MMCSD_ERRMASK)
- && (host_status & TIFM_MMCSD_EOC)) {
- rc = 0;
- break;
- }
- msleep(rc);
- }
-
- if (rc) {
- printk(KERN_ERR DRIVER_NAME
- ": card not ready - probe failed on initialization\n");
- return -ENODEV;
- }
-
- writel(TIFM_MMCSD_DATAMASK | TIFM_MMCSD_ERRMASK,
- sock->addr + SOCK_MMCSD_INT_ENABLE);
- mmiowb();
-
- return 0;
-}
-
-static int tifm_sd_probe(struct tifm_dev *sock)
-{
- struct mmc_host *mmc;
- struct tifm_sd *host;
- int rc = -EIO;
-
- if (!(TIFM_SOCK_STATE_OCCUPIED
- & readl(sock->addr + SOCK_PRESENT_STATE))) {
- printk(KERN_WARNING DRIVER_NAME ": card gone, unexpectedly\n");
- return rc;
- }
-
- mmc = mmc_alloc_host(sizeof(struct tifm_sd), &sock->dev);
- if (!mmc)
- return -ENOMEM;
-
- host = mmc_priv(mmc);
- tifm_set_drvdata(sock, mmc);
- host->dev = sock;
- host->timeout_jiffies = msecs_to_jiffies(1000);
-
- init_waitqueue_head(&host->notify);
- tasklet_init(&host->finish_tasklet,
- no_dma ? tifm_sd_end_cmd_nodma : tifm_sd_end_cmd,
- (unsigned long)host);
- setup_timer(&host->timer, tifm_sd_abort, (unsigned long)host);
-
- tifm_sd_ops.request = no_dma ? tifm_sd_request_nodma : tifm_sd_request;
- mmc->ops = &tifm_sd_ops;
- mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34;
- mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_MULTIWRITE;
- mmc->f_min = 20000000 / 60;
- mmc->f_max = 24000000;
- mmc->max_hw_segs = 1;
- mmc->max_phys_segs = 1;
- // limited by DMA counter - it's safer to stick with
- // block counter has 11 bits though
- mmc->max_blk_count = 256;
- // 2k maximum hw block length
- mmc->max_blk_size = 2048;
- mmc->max_req_size = mmc->max_blk_size * mmc->max_blk_count;
- mmc->max_seg_size = mmc->max_req_size;
- sock->signal_irq = tifm_sd_signal_irq;
- rc = tifm_sd_initialize_host(host);
-
- if (!rc)
- rc = mmc_add_host(mmc);
- if (rc)
- goto out_free_mmc;
-
- return 0;
-out_free_mmc:
- mmc_free_host(mmc);
- return rc;
-}
-
-static void tifm_sd_remove(struct tifm_dev *sock)
-{
- struct mmc_host *mmc = tifm_get_drvdata(sock);
- struct tifm_sd *host = mmc_priv(mmc);
-
- del_timer_sync(&host->timer);
- tifm_sd_terminate(host);
- wait_event_timeout(host->notify, host->flags & EJECT_DONE,
- host->timeout_jiffies);
- tasklet_kill(&host->finish_tasklet);
- mmc_remove_host(mmc);
-
- /* The meaning of the bit majority in this constant is unknown. */
- writel(0xfff8 & readl(sock->addr + SOCK_CONTROL),
- sock->addr + SOCK_CONTROL);
-
- tifm_set_drvdata(sock, NULL);
- mmc_free_host(mmc);
-}
-
-#ifdef CONFIG_PM
-
-static int tifm_sd_suspend(struct tifm_dev *sock, pm_message_t state)
-{
- struct mmc_host *mmc = tifm_get_drvdata(sock);
- int rc;
-
- rc = mmc_suspend_host(mmc, state);
- /* The meaning of the bit majority in this constant is unknown. */
- writel(0xfff8 & readl(sock->addr + SOCK_CONTROL),
- sock->addr + SOCK_CONTROL);
- return rc;
-}
-
-static int tifm_sd_resume(struct tifm_dev *sock)
-{
- struct mmc_host *mmc = tifm_get_drvdata(sock);
- struct tifm_sd *host = mmc_priv(mmc);
-
- if (sock->media_id != FM_SD
- || tifm_sd_initialize_host(host)) {
- tifm_eject(sock);
- return 0;
- } else {
- return mmc_resume_host(mmc);
- }
-}
-
-#else
-
-#define tifm_sd_suspend NULL
-#define tifm_sd_resume NULL
-
-#endif /* CONFIG_PM */
-
-static tifm_media_id tifm_sd_id_tbl[] = {
- FM_SD, 0
-};
-
-static struct tifm_driver tifm_sd_driver = {
- .driver = {
- .name = DRIVER_NAME,
- .owner = THIS_MODULE
- },
- .id_table = tifm_sd_id_tbl,
- .probe = tifm_sd_probe,
- .remove = tifm_sd_remove,
- .suspend = tifm_sd_suspend,
- .resume = tifm_sd_resume
-};
-
-static int __init tifm_sd_init(void)
-{
- return tifm_register_driver(&tifm_sd_driver);
-}
-
-static void __exit tifm_sd_exit(void)
-{
- tifm_unregister_driver(&tifm_sd_driver);
-}
-
-MODULE_AUTHOR("Alex Dubov");
-MODULE_DESCRIPTION("TI FlashMedia SD driver");
-MODULE_LICENSE("GPL");
-MODULE_DEVICE_TABLE(tifm, tifm_sd_id_tbl);
-MODULE_VERSION(DRIVER_VERSION);
-
-module_init(tifm_sd_init);
-module_exit(tifm_sd_exit);
diff --git a/include/asm-arm/arch-imx/mmc.h b/include/asm-arm/arch-imx/mmc.h
index 1937151..84c7269 100644
--- a/include/asm-arm/arch-imx/mmc.h
+++ b/include/asm-arm/arch-imx/mmc.h
@@ -1,7 +1,7 @@
#ifndef ASMARM_ARCH_MMC_H
#define ASMARM_ARCH_MMC_H
-#include <linux/mmc/protocol.h>
+#include <linux/mmc/host.h>
struct imxmmc_platform_data {
int (*card_present)(void);
diff --git a/include/asm-arm/arch-pxa/mmc.h b/include/asm-arm/arch-pxa/mmc.h
index a38a28c..ef4f570 100644
--- a/include/asm-arm/arch-pxa/mmc.h
+++ b/include/asm-arm/arch-pxa/mmc.h
@@ -1,7 +1,7 @@
#ifndef ASMARM_ARCH_MMC_H
#define ASMARM_ARCH_MMC_H
-#include <linux/mmc/protocol.h>
+#include <linux/mmc/host.h>
#include <linux/interrupt.h>
struct device;
diff --git a/include/asm-arm/mach/mmc.h b/include/asm-arm/mach/mmc.h
index 1b3555d..eb91145 100644
--- a/include/asm-arm/mach/mmc.h
+++ b/include/asm-arm/mach/mmc.h
@@ -4,7 +4,7 @@
#ifndef ASMARM_MACH_MMC_H
#define ASMARM_MACH_MMC_H
-#include <linux/mmc/protocol.h>
+#include <linux/mmc/host.h>
struct mmc_platform_data {
unsigned int ocr_mask; /* available voltages */
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index e45712ac..badf702 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -10,7 +10,7 @@
#ifndef LINUX_MMC_CARD_H
#define LINUX_MMC_CARD_H
-#include <linux/mmc/mmc.h>
+#include <linux/mmc/core.h>
struct mmc_cid {
unsigned int manfid;
@@ -41,6 +41,7 @@
struct mmc_ext_csd {
unsigned int hs_max_dtr;
+ unsigned int sectors;
};
struct sd_scr {
@@ -60,18 +61,17 @@
* MMC device
*/
struct mmc_card {
- struct list_head node; /* node in hosts devices list */
struct mmc_host *host; /* the host this device belongs to */
struct device dev; /* the device */
unsigned int rca; /* relative card address of device */
+ unsigned int type; /* card type */
+#define MMC_TYPE_MMC 0 /* MMC card */
+#define MMC_TYPE_SD 1 /* SD card */
unsigned int state; /* (our) card state */
#define MMC_STATE_PRESENT (1<<0) /* present in sysfs */
-#define MMC_STATE_DEAD (1<<1) /* device no longer in stack */
-#define MMC_STATE_BAD (1<<2) /* unrecognised device */
-#define MMC_STATE_SDCARD (1<<3) /* is an SD card */
-#define MMC_STATE_READONLY (1<<4) /* card is read-only */
-#define MMC_STATE_HIGHSPEED (1<<5) /* card is in high speed mode */
-#define MMC_STATE_BLOCKADDR (1<<6) /* card uses block-addressing */
+#define MMC_STATE_READONLY (1<<1) /* card is read-only */
+#define MMC_STATE_HIGHSPEED (1<<2) /* card is in high speed mode */
+#define MMC_STATE_BLOCKADDR (1<<3) /* card uses block-addressing */
u32 raw_cid[4]; /* raw card CID */
u32 raw_csd[4]; /* raw card CSD */
u32 raw_scr[2]; /* raw card SCR */
@@ -82,18 +82,15 @@
struct sd_switch_caps sw_caps; /* switch (CMD6) caps */
};
+#define mmc_card_mmc(c) ((c)->type == MMC_TYPE_MMC)
+#define mmc_card_sd(c) ((c)->type == MMC_TYPE_SD)
+
#define mmc_card_present(c) ((c)->state & MMC_STATE_PRESENT)
-#define mmc_card_dead(c) ((c)->state & MMC_STATE_DEAD)
-#define mmc_card_bad(c) ((c)->state & MMC_STATE_BAD)
-#define mmc_card_sd(c) ((c)->state & MMC_STATE_SDCARD)
#define mmc_card_readonly(c) ((c)->state & MMC_STATE_READONLY)
#define mmc_card_highspeed(c) ((c)->state & MMC_STATE_HIGHSPEED)
#define mmc_card_blockaddr(c) ((c)->state & MMC_STATE_BLOCKADDR)
#define mmc_card_set_present(c) ((c)->state |= MMC_STATE_PRESENT)
-#define mmc_card_set_dead(c) ((c)->state |= MMC_STATE_DEAD)
-#define mmc_card_set_bad(c) ((c)->state |= MMC_STATE_BAD)
-#define mmc_card_set_sd(c) ((c)->state |= MMC_STATE_SDCARD)
#define mmc_card_set_readonly(c) ((c)->state |= MMC_STATE_READONLY)
#define mmc_card_set_highspeed(c) ((c)->state |= MMC_STATE_HIGHSPEED)
#define mmc_card_set_blockaddr(c) ((c)->state |= MMC_STATE_BLOCKADDR)
@@ -119,11 +116,4 @@
extern int mmc_register_driver(struct mmc_driver *);
extern void mmc_unregister_driver(struct mmc_driver *);
-static inline int mmc_card_claim_host(struct mmc_card *card)
-{
- return __mmc_claim_host(card->host, card);
-}
-
-#define mmc_card_release_host(c) mmc_release_host((c)->host)
-
#endif
diff --git a/include/linux/mmc/core.h b/include/linux/mmc/core.h
new file mode 100644
index 0000000..04bbe12f
--- /dev/null
+++ b/include/linux/mmc/core.h
@@ -0,0 +1,112 @@
+/*
+ * linux/include/linux/mmc/core.h
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef LINUX_MMC_CORE_H
+#define LINUX_MMC_CORE_H
+
+#include <linux/interrupt.h>
+#include <linux/device.h>
+
+struct request;
+struct mmc_data;
+struct mmc_request;
+
+struct mmc_command {
+ u32 opcode;
+ u32 arg;
+ u32 resp[4];
+ unsigned int flags; /* expected response type */
+#define MMC_RSP_PRESENT (1 << 0)
+#define MMC_RSP_136 (1 << 1) /* 136 bit response */
+#define MMC_RSP_CRC (1 << 2) /* expect valid crc */
+#define MMC_RSP_BUSY (1 << 3) /* card may send busy */
+#define MMC_RSP_OPCODE (1 << 4) /* response contains opcode */
+#define MMC_CMD_MASK (3 << 5) /* command type */
+#define MMC_CMD_AC (0 << 5)
+#define MMC_CMD_ADTC (1 << 5)
+#define MMC_CMD_BC (2 << 5)
+#define MMC_CMD_BCR (3 << 5)
+
+/*
+ * These are the response types, and correspond to valid bit
+ * patterns of the above flags. One additional valid pattern
+ * is all zeros, which means we don't expect a response.
+ */
+#define MMC_RSP_NONE (0)
+#define MMC_RSP_R1 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
+#define MMC_RSP_R1B (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE|MMC_RSP_BUSY)
+#define MMC_RSP_R2 (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)
+#define MMC_RSP_R3 (MMC_RSP_PRESENT)
+#define MMC_RSP_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
+#define MMC_RSP_R7 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
+
+#define mmc_resp_type(cmd) ((cmd)->flags & (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC|MMC_RSP_BUSY|MMC_RSP_OPCODE))
+
+/*
+ * These are the command types.
+ */
+#define mmc_cmd_type(cmd) ((cmd)->flags & MMC_CMD_MASK)
+
+ unsigned int retries; /* max number of retries */
+ unsigned int error; /* command error */
+
+#define MMC_ERR_NONE 0
+#define MMC_ERR_TIMEOUT 1
+#define MMC_ERR_BADCRC 2
+#define MMC_ERR_FIFO 3
+#define MMC_ERR_FAILED 4
+#define MMC_ERR_INVALID 5
+
+ struct mmc_data *data; /* data segment associated with cmd */
+ struct mmc_request *mrq; /* associated request */
+};
+
+struct mmc_data {
+ unsigned int timeout_ns; /* data timeout (in ns, max 80ms) */
+ unsigned int timeout_clks; /* data timeout (in clocks) */
+ unsigned int blksz; /* data block size */
+ unsigned int blocks; /* number of blocks */
+ unsigned int error; /* data error */
+ unsigned int flags;
+
+#define MMC_DATA_WRITE (1 << 8)
+#define MMC_DATA_READ (1 << 9)
+#define MMC_DATA_STREAM (1 << 10)
+#define MMC_DATA_MULTI (1 << 11)
+
+ unsigned int bytes_xfered;
+
+ struct mmc_command *stop; /* stop command */
+ struct mmc_request *mrq; /* associated request */
+
+ unsigned int sg_len; /* size of scatter list */
+ struct scatterlist *sg; /* I/O scatter list */
+};
+
+struct mmc_request {
+ struct mmc_command *cmd;
+ struct mmc_data *data;
+ struct mmc_command *stop;
+
+ void *done_data; /* completion data */
+ void (*done)(struct mmc_request *);/* completion function */
+};
+
+struct mmc_host;
+struct mmc_card;
+
+extern int mmc_wait_for_req(struct mmc_host *, struct mmc_request *);
+extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int);
+extern int mmc_wait_for_app_cmd(struct mmc_host *, struct mmc_card *,
+ struct mmc_command *, int);
+
+extern void mmc_set_data_timeout(struct mmc_data *, const struct mmc_card *, int);
+
+extern void mmc_claim_host(struct mmc_host *host);
+extern void mmc_release_host(struct mmc_host *host);
+
+#endif
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index bfcef8a..b1350df 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -10,36 +10,13 @@
#ifndef LINUX_MMC_HOST_H
#define LINUX_MMC_HOST_H
-#include <linux/mmc/mmc.h>
+#include <linux/mmc/core.h>
struct mmc_ios {
unsigned int clock; /* clock rate */
unsigned short vdd;
-#define MMC_VDD_150 0
-#define MMC_VDD_155 1
-#define MMC_VDD_160 2
-#define MMC_VDD_165 3
-#define MMC_VDD_170 4
-#define MMC_VDD_180 5
-#define MMC_VDD_190 6
-#define MMC_VDD_200 7
-#define MMC_VDD_210 8
-#define MMC_VDD_220 9
-#define MMC_VDD_230 10
-#define MMC_VDD_240 11
-#define MMC_VDD_250 12
-#define MMC_VDD_260 13
-#define MMC_VDD_270 14
-#define MMC_VDD_280 15
-#define MMC_VDD_290 16
-#define MMC_VDD_300 17
-#define MMC_VDD_310 18
-#define MMC_VDD_320 19
-#define MMC_VDD_330 20
-#define MMC_VDD_340 21
-#define MMC_VDD_350 22
-#define MMC_VDD_360 23
+/* vdd stores the bit number of the selected voltage range from below. */
unsigned char bus_mode; /* command output mode */
@@ -88,6 +65,24 @@
unsigned int f_max;
u32 ocr_avail;
+#define MMC_VDD_165_195 0x00000080 /* VDD voltage 1.65 - 1.95 */
+#define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
+#define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */
+#define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */
+#define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */
+#define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */
+#define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */
+#define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */
+#define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */
+#define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */
+#define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */
+#define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */
+#define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */
+#define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */
+#define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
+#define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
+#define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
+
unsigned long caps; /* Host capabilities */
#define MMC_CAP_4_BIT_DATA (1 << 0) /* Can the host do 4 bit transfers */
@@ -106,6 +101,8 @@
unsigned int max_blk_count; /* maximum number of blocks in one req */
/* private data */
+ spinlock_t lock; /* lock for claim and bus ops */
+
struct mmc_ios ios; /* current io bus settings */
u32 ocr; /* the current OCR setting */
@@ -113,15 +110,19 @@
#define MMC_MODE_MMC 0
#define MMC_MODE_SD 1
- struct list_head cards; /* devices attached to this host */
+ struct mmc_card *card; /* device attached to this host */
wait_queue_head_t wq;
- spinlock_t lock; /* claimed lock */
unsigned int claimed:1; /* host exclusively claimed */
- struct mmc_card *card_selected; /* the selected MMC card */
-
struct delayed_work detect;
+#ifdef CONFIG_MMC_DEBUG
+ unsigned int removed:1; /* host is being removed */
+#endif
+
+ const struct mmc_bus_ops *bus_ops; /* current bus driver */
+ unsigned int bus_refs; /* reference counter */
+ unsigned int bus_dead:1; /* bus has been released */
unsigned long private[0] ____cacheline_aligned;
};
diff --git a/include/linux/mmc/mmc.h b/include/linux/mmc/mmc.h
index cdc54be..e3ed9b9 100644
--- a/include/linux/mmc/mmc.h
+++ b/include/linux/mmc/mmc.h
@@ -1,119 +1,257 @@
/*
- * linux/include/linux/mmc/mmc.h
+ * Header for MultiMediaCard (MMC)
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
+ * Copyright 2002 Hewlett-Packard Company
+ *
+ * Use consistent with the GNU GPL is permitted,
+ * provided that this copyright notice is
+ * preserved in its entirety in all copies and derived works.
+ *
+ * HEWLETT-PACKARD COMPANY MAKES NO WARRANTIES, EXPRESSED OR IMPLIED,
+ * AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS
+ * FITNESS FOR ANY PARTICULAR PURPOSE.
+ *
+ * Many thanks to Alessandro Rubini and Jonathan Corbet!
+ *
+ * Based strongly on code by:
+ *
+ * Author: Yong-iL Joh <tolkien@mizi.com>
+ * Date : $Date: 2002/06/18 12:37:30 $
+ *
+ * Author: Andrew Christian
+ * 15 May 2002
*/
-#ifndef MMC_H
-#define MMC_H
-#include <linux/list.h>
-#include <linux/interrupt.h>
-#include <linux/device.h>
+#ifndef MMC_MMC_H
+#define MMC_MMC_H
-struct request;
-struct mmc_data;
-struct mmc_request;
+/* Standard MMC commands (4.1) type argument response */
+ /* class 1 */
+#define MMC_GO_IDLE_STATE 0 /* bc */
+#define MMC_SEND_OP_COND 1 /* bcr [31:0] OCR R3 */
+#define MMC_ALL_SEND_CID 2 /* bcr R2 */
+#define MMC_SET_RELATIVE_ADDR 3 /* ac [31:16] RCA R1 */
+#define MMC_SET_DSR 4 /* bc [31:16] RCA */
+#define MMC_SWITCH 6 /* ac [31:0] See below R1b */
+#define MMC_SELECT_CARD 7 /* ac [31:16] RCA R1 */
+#define MMC_SEND_EXT_CSD 8 /* adtc R1 */
+#define MMC_SEND_CSD 9 /* ac [31:16] RCA R2 */
+#define MMC_SEND_CID 10 /* ac [31:16] RCA R2 */
+#define MMC_READ_DAT_UNTIL_STOP 11 /* adtc [31:0] dadr R1 */
+#define MMC_STOP_TRANSMISSION 12 /* ac R1b */
+#define MMC_SEND_STATUS 13 /* ac [31:16] RCA R1 */
+#define MMC_GO_INACTIVE_STATE 15 /* ac [31:16] RCA */
-struct mmc_command {
- u32 opcode;
- u32 arg;
- u32 resp[4];
- unsigned int flags; /* expected response type */
-#define MMC_RSP_PRESENT (1 << 0)
-#define MMC_RSP_136 (1 << 1) /* 136 bit response */
-#define MMC_RSP_CRC (1 << 2) /* expect valid crc */
-#define MMC_RSP_BUSY (1 << 3) /* card may send busy */
-#define MMC_RSP_OPCODE (1 << 4) /* response contains opcode */
-#define MMC_CMD_MASK (3 << 5) /* command type */
-#define MMC_CMD_AC (0 << 5)
-#define MMC_CMD_ADTC (1 << 5)
-#define MMC_CMD_BC (2 << 5)
-#define MMC_CMD_BCR (3 << 5)
+ /* class 2 */
+#define MMC_SET_BLOCKLEN 16 /* ac [31:0] block len R1 */
+#define MMC_READ_SINGLE_BLOCK 17 /* adtc [31:0] data addr R1 */
+#define MMC_READ_MULTIPLE_BLOCK 18 /* adtc [31:0] data addr R1 */
+
+ /* class 3 */
+#define MMC_WRITE_DAT_UNTIL_STOP 20 /* adtc [31:0] data addr R1 */
+
+ /* class 4 */
+#define MMC_SET_BLOCK_COUNT 23 /* adtc [31:0] data addr R1 */
+#define MMC_WRITE_BLOCK 24 /* adtc [31:0] data addr R1 */
+#define MMC_WRITE_MULTIPLE_BLOCK 25 /* adtc R1 */
+#define MMC_PROGRAM_CID 26 /* adtc R1 */
+#define MMC_PROGRAM_CSD 27 /* adtc R1 */
+
+ /* class 6 */
+#define MMC_SET_WRITE_PROT 28 /* ac [31:0] data addr R1b */
+#define MMC_CLR_WRITE_PROT 29 /* ac [31:0] data addr R1b */
+#define MMC_SEND_WRITE_PROT 30 /* adtc [31:0] wpdata addr R1 */
+
+ /* class 5 */
+#define MMC_ERASE_GROUP_START 35 /* ac [31:0] data addr R1 */
+#define MMC_ERASE_GROUP_END 36 /* ac [31:0] data addr R1 */
+#define MMC_ERASE 38 /* ac R1b */
+
+ /* class 9 */
+#define MMC_FAST_IO 39 /* ac <Complex> R4 */
+#define MMC_GO_IRQ_STATE 40 /* bcr R5 */
+
+ /* class 7 */
+#define MMC_LOCK_UNLOCK 42 /* adtc R1b */
+
+ /* class 8 */
+#define MMC_APP_CMD 55 /* ac [31:16] RCA R1 */
+#define MMC_GEN_CMD 56 /* adtc [0] RD/WR R1 */
/*
- * These are the response types, and correspond to valid bit
- * patterns of the above flags. One additional valid pattern
- * is all zeros, which means we don't expect a response.
+ * MMC_SWITCH argument format:
+ *
+ * [31:26] Always 0
+ * [25:24] Access Mode
+ * [23:16] Location of target Byte in EXT_CSD
+ * [15:08] Value Byte
+ * [07:03] Always 0
+ * [02:00] Command Set
*/
-#define MMC_RSP_NONE (0)
-#define MMC_RSP_R1 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
-#define MMC_RSP_R1B (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE|MMC_RSP_BUSY)
-#define MMC_RSP_R2 (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC)
-#define MMC_RSP_R3 (MMC_RSP_PRESENT)
-#define MMC_RSP_R6 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
-#define MMC_RSP_R7 (MMC_RSP_PRESENT|MMC_RSP_CRC|MMC_RSP_OPCODE)
-
-#define mmc_resp_type(cmd) ((cmd)->flags & (MMC_RSP_PRESENT|MMC_RSP_136|MMC_RSP_CRC|MMC_RSP_BUSY|MMC_RSP_OPCODE))
/*
- * These are the command types.
+ MMC status in R1
+ Type
+ e : error bit
+ s : status bit
+ r : detected and set for the actual command response
+ x : detected and set during command execution. the host must poll
+ the card by sending status command in order to read these bits.
+ Clear condition
+ a : according to the card state
+ b : always related to the previous command. Reception of
+ a valid command will clear it (with a delay of one command)
+ c : clear by read
*/
-#define mmc_cmd_type(cmd) ((cmd)->flags & MMC_CMD_MASK)
- unsigned int retries; /* max number of retries */
- unsigned int error; /* command error */
+#define R1_OUT_OF_RANGE (1 << 31) /* er, c */
+#define R1_ADDRESS_ERROR (1 << 30) /* erx, c */
+#define R1_BLOCK_LEN_ERROR (1 << 29) /* er, c */
+#define R1_ERASE_SEQ_ERROR (1 << 28) /* er, c */
+#define R1_ERASE_PARAM (1 << 27) /* ex, c */
+#define R1_WP_VIOLATION (1 << 26) /* erx, c */
+#define R1_CARD_IS_LOCKED (1 << 25) /* sx, a */
+#define R1_LOCK_UNLOCK_FAILED (1 << 24) /* erx, c */
+#define R1_COM_CRC_ERROR (1 << 23) /* er, b */
+#define R1_ILLEGAL_COMMAND (1 << 22) /* er, b */
+#define R1_CARD_ECC_FAILED (1 << 21) /* ex, c */
+#define R1_CC_ERROR (1 << 20) /* erx, c */
+#define R1_ERROR (1 << 19) /* erx, c */
+#define R1_UNDERRUN (1 << 18) /* ex, c */
+#define R1_OVERRUN (1 << 17) /* ex, c */
+#define R1_CID_CSD_OVERWRITE (1 << 16) /* erx, c, CID/CSD overwrite */
+#define R1_WP_ERASE_SKIP (1 << 15) /* sx, c */
+#define R1_CARD_ECC_DISABLED (1 << 14) /* sx, a */
+#define R1_ERASE_RESET (1 << 13) /* sr, c */
+#define R1_STATUS(x) (x & 0xFFFFE000)
+#define R1_CURRENT_STATE(x) ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */
+#define R1_READY_FOR_DATA (1 << 8) /* sx, a */
+#define R1_APP_CMD (1 << 5) /* sr, c */
-#define MMC_ERR_NONE 0
-#define MMC_ERR_TIMEOUT 1
-#define MMC_ERR_BADCRC 2
-#define MMC_ERR_FIFO 3
-#define MMC_ERR_FAILED 4
-#define MMC_ERR_INVALID 5
+/* These are unpacked versions of the actual responses */
- struct mmc_data *data; /* data segment associated with cmd */
- struct mmc_request *mrq; /* associated request */
+struct _mmc_csd {
+ u8 csd_structure;
+ u8 spec_vers;
+ u8 taac;
+ u8 nsac;
+ u8 tran_speed;
+ u16 ccc;
+ u8 read_bl_len;
+ u8 read_bl_partial;
+ u8 write_blk_misalign;
+ u8 read_blk_misalign;
+ u8 dsr_imp;
+ u16 c_size;
+ u8 vdd_r_curr_min;
+ u8 vdd_r_curr_max;
+ u8 vdd_w_curr_min;
+ u8 vdd_w_curr_max;
+ u8 c_size_mult;
+ union {
+ struct { /* MMC system specification version 3.1 */
+ u8 erase_grp_size;
+ u8 erase_grp_mult;
+ } v31;
+ struct { /* MMC system specification version 2.2 */
+ u8 sector_size;
+ u8 erase_grp_size;
+ } v22;
+ } erase;
+ u8 wp_grp_size;
+ u8 wp_grp_enable;
+ u8 default_ecc;
+ u8 r2w_factor;
+ u8 write_bl_len;
+ u8 write_bl_partial;
+ u8 file_format_grp;
+ u8 copy;
+ u8 perm_write_protect;
+ u8 tmp_write_protect;
+ u8 file_format;
+ u8 ecc;
};
-struct mmc_data {
- unsigned int timeout_ns; /* data timeout (in ns, max 80ms) */
- unsigned int timeout_clks; /* data timeout (in clocks) */
- unsigned int blksz; /* data block size */
- unsigned int blocks; /* number of blocks */
- unsigned int error; /* data error */
- unsigned int flags;
+/*
+ * OCR bits are mostly in host.h
+ */
+#define MMC_CARD_BUSY 0x80000000 /* Card Power up status bit */
-#define MMC_DATA_WRITE (1 << 8)
-#define MMC_DATA_READ (1 << 9)
-#define MMC_DATA_STREAM (1 << 10)
-#define MMC_DATA_MULTI (1 << 11)
+/*
+ * Card Command Classes (CCC)
+ */
+#define CCC_BASIC (1<<0) /* (0) Basic protocol functions */
+ /* (CMD0,1,2,3,4,7,9,10,12,13,15) */
+#define CCC_STREAM_READ (1<<1) /* (1) Stream read commands */
+ /* (CMD11) */
+#define CCC_BLOCK_READ (1<<2) /* (2) Block read commands */
+ /* (CMD16,17,18) */
+#define CCC_STREAM_WRITE (1<<3) /* (3) Stream write commands */
+ /* (CMD20) */
+#define CCC_BLOCK_WRITE (1<<4) /* (4) Block write commands */
+ /* (CMD16,24,25,26,27) */
+#define CCC_ERASE (1<<5) /* (5) Ability to erase blocks */
+ /* (CMD32,33,34,35,36,37,38,39) */
+#define CCC_WRITE_PROT (1<<6) /* (6) Able to write protect blocks */
+ /* (CMD28,29,30) */
+#define CCC_LOCK_CARD (1<<7) /* (7) Able to lock down card */
+ /* (CMD16,CMD42) */
+#define CCC_APP_SPEC (1<<8) /* (8) Application specific */
+ /* (CMD55,56,57,ACMD*) */
+#define CCC_IO_MODE (1<<9) /* (9) I/O mode */
+ /* (CMD5,39,40,52,53) */
+#define CCC_SWITCH (1<<10) /* (10) High speed switch */
+ /* (CMD6,34,35,36,37,50) */
+ /* (11) Reserved */
+ /* (CMD?) */
- unsigned int bytes_xfered;
+/*
+ * CSD field definitions
+ */
- struct mmc_command *stop; /* stop command */
- struct mmc_request *mrq; /* associated request */
+#define CSD_STRUCT_VER_1_0 0 /* Valid for system specification 1.0 - 1.2 */
+#define CSD_STRUCT_VER_1_1 1 /* Valid for system specification 1.4 - 2.2 */
+#define CSD_STRUCT_VER_1_2 2 /* Valid for system specification 3.1 - 3.2 - 3.31 - 4.0 - 4.1 */
+#define CSD_STRUCT_EXT_CSD 3 /* Version is coded in CSD_STRUCTURE in EXT_CSD */
- unsigned int sg_len; /* size of scatter list */
- struct scatterlist *sg; /* I/O scatter list */
-};
+#define CSD_SPEC_VER_0 0 /* Implements system specification 1.0 - 1.2 */
+#define CSD_SPEC_VER_1 1 /* Implements system specification 1.4 */
+#define CSD_SPEC_VER_2 2 /* Implements system specification 2.0 - 2.2 */
+#define CSD_SPEC_VER_3 3 /* Implements system specification 3.1 - 3.2 - 3.31 */
+#define CSD_SPEC_VER_4 4 /* Implements system specification 4.0 - 4.1 */
-struct mmc_request {
- struct mmc_command *cmd;
- struct mmc_data *data;
- struct mmc_command *stop;
+/*
+ * EXT_CSD fields
+ */
- void *done_data; /* completion data */
- void (*done)(struct mmc_request *);/* completion function */
-};
+#define EXT_CSD_BUS_WIDTH 183 /* R/W */
+#define EXT_CSD_HS_TIMING 185 /* R/W */
+#define EXT_CSD_CARD_TYPE 196 /* RO */
+#define EXT_CSD_SEC_CNT 212 /* RO, 4 bytes */
-struct mmc_host;
-struct mmc_card;
+/*
+ * EXT_CSD field definitions
+ */
-extern int mmc_wait_for_req(struct mmc_host *, struct mmc_request *);
-extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int);
-extern int mmc_wait_for_app_cmd(struct mmc_host *, unsigned int,
- struct mmc_command *, int);
+#define EXT_CSD_CMD_SET_NORMAL (1<<0)
+#define EXT_CSD_CMD_SET_SECURE (1<<1)
+#define EXT_CSD_CMD_SET_CPSECURE (1<<2)
-extern void mmc_set_data_timeout(struct mmc_data *, const struct mmc_card *, int);
+#define EXT_CSD_CARD_TYPE_26 (1<<0) /* Card can run at 26MHz */
+#define EXT_CSD_CARD_TYPE_52 (1<<1) /* Card can run at 52MHz */
-extern int __mmc_claim_host(struct mmc_host *host, struct mmc_card *card);
+#define EXT_CSD_BUS_WIDTH_1 0 /* Card is in 1 bit mode */
+#define EXT_CSD_BUS_WIDTH_4 1 /* Card is in 4 bit mode */
+#define EXT_CSD_BUS_WIDTH_8 2 /* Card is in 8 bit mode */
-static inline void mmc_claim_host(struct mmc_host *host)
-{
- __mmc_claim_host(host, (struct mmc_card *)-1);
-}
+/*
+ * MMC_SWITCH access modes
+ */
-extern void mmc_release_host(struct mmc_host *host);
+#define MMC_SWITCH_MODE_CMD_SET 0x00 /* Change the command set */
+#define MMC_SWITCH_MODE_SET_BITS 0x01 /* Set bits which are 1 in value */
+#define MMC_SWITCH_MODE_CLEAR_BITS 0x02 /* Clear bits which are 1 in value */
+#define MMC_SWITCH_MODE_WRITE_BYTE 0x03 /* Set target to value */
-#endif
+#endif /* MMC_MMC_PROTOCOL_H */
+
diff --git a/include/linux/mmc/protocol.h b/include/linux/mmc/protocol.h
deleted file mode 100644
index c90b676..0000000
--- a/include/linux/mmc/protocol.h
+++ /dev/null
@@ -1,327 +0,0 @@
-/*
- * Header for MultiMediaCard (MMC)
- *
- * Copyright 2002 Hewlett-Packard Company
- *
- * Use consistent with the GNU GPL is permitted,
- * provided that this copyright notice is
- * preserved in its entirety in all copies and derived works.
- *
- * HEWLETT-PACKARD COMPANY MAKES NO WARRANTIES, EXPRESSED OR IMPLIED,
- * AS TO THE USEFULNESS OR CORRECTNESS OF THIS CODE OR ITS
- * FITNESS FOR ANY PARTICULAR PURPOSE.
- *
- * Many thanks to Alessandro Rubini and Jonathan Corbet!
- *
- * Based strongly on code by:
- *
- * Author: Yong-iL Joh <tolkien@mizi.com>
- * Date : $Date: 2002/06/18 12:37:30 $
- *
- * Author: Andrew Christian
- * 15 May 2002
- */
-
-#ifndef MMC_MMC_PROTOCOL_H
-#define MMC_MMC_PROTOCOL_H
-
-/* Standard MMC commands (4.1) type argument response */
- /* class 1 */
-#define MMC_GO_IDLE_STATE 0 /* bc */
-#define MMC_SEND_OP_COND 1 /* bcr [31:0] OCR R3 */
-#define MMC_ALL_SEND_CID 2 /* bcr R2 */
-#define MMC_SET_RELATIVE_ADDR 3 /* ac [31:16] RCA R1 */
-#define MMC_SET_DSR 4 /* bc [31:16] RCA */
-#define MMC_SWITCH 6 /* ac [31:0] See below R1b */
-#define MMC_SELECT_CARD 7 /* ac [31:16] RCA R1 */
-#define MMC_SEND_EXT_CSD 8 /* adtc R1 */
-#define MMC_SEND_CSD 9 /* ac [31:16] RCA R2 */
-#define MMC_SEND_CID 10 /* ac [31:16] RCA R2 */
-#define MMC_READ_DAT_UNTIL_STOP 11 /* adtc [31:0] dadr R1 */
-#define MMC_STOP_TRANSMISSION 12 /* ac R1b */
-#define MMC_SEND_STATUS 13 /* ac [31:16] RCA R1 */
-#define MMC_GO_INACTIVE_STATE 15 /* ac [31:16] RCA */
-
- /* class 2 */
-#define MMC_SET_BLOCKLEN 16 /* ac [31:0] block len R1 */
-#define MMC_READ_SINGLE_BLOCK 17 /* adtc [31:0] data addr R1 */
-#define MMC_READ_MULTIPLE_BLOCK 18 /* adtc [31:0] data addr R1 */
-
- /* class 3 */
-#define MMC_WRITE_DAT_UNTIL_STOP 20 /* adtc [31:0] data addr R1 */
-
- /* class 4 */
-#define MMC_SET_BLOCK_COUNT 23 /* adtc [31:0] data addr R1 */
-#define MMC_WRITE_BLOCK 24 /* adtc [31:0] data addr R1 */
-#define MMC_WRITE_MULTIPLE_BLOCK 25 /* adtc R1 */
-#define MMC_PROGRAM_CID 26 /* adtc R1 */
-#define MMC_PROGRAM_CSD 27 /* adtc R1 */
-
- /* class 6 */
-#define MMC_SET_WRITE_PROT 28 /* ac [31:0] data addr R1b */
-#define MMC_CLR_WRITE_PROT 29 /* ac [31:0] data addr R1b */
-#define MMC_SEND_WRITE_PROT 30 /* adtc [31:0] wpdata addr R1 */
-
- /* class 5 */
-#define MMC_ERASE_GROUP_START 35 /* ac [31:0] data addr R1 */
-#define MMC_ERASE_GROUP_END 36 /* ac [31:0] data addr R1 */
-#define MMC_ERASE 38 /* ac R1b */
-
- /* class 9 */
-#define MMC_FAST_IO 39 /* ac <Complex> R4 */
-#define MMC_GO_IRQ_STATE 40 /* bcr R5 */
-
- /* class 7 */
-#define MMC_LOCK_UNLOCK 42 /* adtc R1b */
-
- /* class 8 */
-#define MMC_APP_CMD 55 /* ac [31:16] RCA R1 */
-#define MMC_GEN_CMD 56 /* adtc [0] RD/WR R1 */
-
-/* SD commands type argument response */
- /* class 0 */
-/* This is basically the same command as for MMC with some quirks. */
-#define SD_SEND_RELATIVE_ADDR 3 /* bcr R6 */
-#define SD_SEND_IF_COND 8 /* bcr [11:0] See below R7 */
-
- /* class 10 */
-#define SD_SWITCH 6 /* adtc [31:0] See below R1 */
-
- /* Application commands */
-#define SD_APP_SET_BUS_WIDTH 6 /* ac [1:0] bus width R1 */
-#define SD_APP_SEND_NUM_WR_BLKS 22 /* adtc R1 */
-#define SD_APP_OP_COND 41 /* bcr [31:0] OCR R3 */
-#define SD_APP_SEND_SCR 51 /* adtc R1 */
-
-/*
- * MMC_SWITCH argument format:
- *
- * [31:26] Always 0
- * [25:24] Access Mode
- * [23:16] Location of target Byte in EXT_CSD
- * [15:08] Value Byte
- * [07:03] Always 0
- * [02:00] Command Set
- */
-
-/*
- * SD_SWITCH argument format:
- *
- * [31] Check (0) or switch (1)
- * [30:24] Reserved (0)
- * [23:20] Function group 6
- * [19:16] Function group 5
- * [15:12] Function group 4
- * [11:8] Function group 3
- * [7:4] Function group 2
- * [3:0] Function group 1
- */
-
-/*
- * SD_SEND_IF_COND argument format:
- *
- * [31:12] Reserved (0)
- * [11:8] Host Voltage Supply Flags
- * [7:0] Check Pattern (0xAA)
- */
-
-/*
- MMC status in R1
- Type
- e : error bit
- s : status bit
- r : detected and set for the actual command response
- x : detected and set during command execution. the host must poll
- the card by sending status command in order to read these bits.
- Clear condition
- a : according to the card state
- b : always related to the previous command. Reception of
- a valid command will clear it (with a delay of one command)
- c : clear by read
- */
-
-#define R1_OUT_OF_RANGE (1 << 31) /* er, c */
-#define R1_ADDRESS_ERROR (1 << 30) /* erx, c */
-#define R1_BLOCK_LEN_ERROR (1 << 29) /* er, c */
-#define R1_ERASE_SEQ_ERROR (1 << 28) /* er, c */
-#define R1_ERASE_PARAM (1 << 27) /* ex, c */
-#define R1_WP_VIOLATION (1 << 26) /* erx, c */
-#define R1_CARD_IS_LOCKED (1 << 25) /* sx, a */
-#define R1_LOCK_UNLOCK_FAILED (1 << 24) /* erx, c */
-#define R1_COM_CRC_ERROR (1 << 23) /* er, b */
-#define R1_ILLEGAL_COMMAND (1 << 22) /* er, b */
-#define R1_CARD_ECC_FAILED (1 << 21) /* ex, c */
-#define R1_CC_ERROR (1 << 20) /* erx, c */
-#define R1_ERROR (1 << 19) /* erx, c */
-#define R1_UNDERRUN (1 << 18) /* ex, c */
-#define R1_OVERRUN (1 << 17) /* ex, c */
-#define R1_CID_CSD_OVERWRITE (1 << 16) /* erx, c, CID/CSD overwrite */
-#define R1_WP_ERASE_SKIP (1 << 15) /* sx, c */
-#define R1_CARD_ECC_DISABLED (1 << 14) /* sx, a */
-#define R1_ERASE_RESET (1 << 13) /* sr, c */
-#define R1_STATUS(x) (x & 0xFFFFE000)
-#define R1_CURRENT_STATE(x) ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */
-#define R1_READY_FOR_DATA (1 << 8) /* sx, a */
-#define R1_APP_CMD (1 << 5) /* sr, c */
-
-/* These are unpacked versions of the actual responses */
-
-struct _mmc_csd {
- u8 csd_structure;
- u8 spec_vers;
- u8 taac;
- u8 nsac;
- u8 tran_speed;
- u16 ccc;
- u8 read_bl_len;
- u8 read_bl_partial;
- u8 write_blk_misalign;
- u8 read_blk_misalign;
- u8 dsr_imp;
- u16 c_size;
- u8 vdd_r_curr_min;
- u8 vdd_r_curr_max;
- u8 vdd_w_curr_min;
- u8 vdd_w_curr_max;
- u8 c_size_mult;
- union {
- struct { /* MMC system specification version 3.1 */
- u8 erase_grp_size;
- u8 erase_grp_mult;
- } v31;
- struct { /* MMC system specification version 2.2 */
- u8 sector_size;
- u8 erase_grp_size;
- } v22;
- } erase;
- u8 wp_grp_size;
- u8 wp_grp_enable;
- u8 default_ecc;
- u8 r2w_factor;
- u8 write_bl_len;
- u8 write_bl_partial;
- u8 file_format_grp;
- u8 copy;
- u8 perm_write_protect;
- u8 tmp_write_protect;
- u8 file_format;
- u8 ecc;
-};
-
-#define MMC_VDD_145_150 0x00000001 /* VDD voltage 1.45 - 1.50 */
-#define MMC_VDD_150_155 0x00000002 /* VDD voltage 1.50 - 1.55 */
-#define MMC_VDD_155_160 0x00000004 /* VDD voltage 1.55 - 1.60 */
-#define MMC_VDD_160_165 0x00000008 /* VDD voltage 1.60 - 1.65 */
-#define MMC_VDD_165_170 0x00000010 /* VDD voltage 1.65 - 1.70 */
-#define MMC_VDD_17_18 0x00000020 /* VDD voltage 1.7 - 1.8 */
-#define MMC_VDD_18_19 0x00000040 /* VDD voltage 1.8 - 1.9 */
-#define MMC_VDD_19_20 0x00000080 /* VDD voltage 1.9 - 2.0 */
-#define MMC_VDD_20_21 0x00000100 /* VDD voltage 2.0 ~ 2.1 */
-#define MMC_VDD_21_22 0x00000200 /* VDD voltage 2.1 ~ 2.2 */
-#define MMC_VDD_22_23 0x00000400 /* VDD voltage 2.2 ~ 2.3 */
-#define MMC_VDD_23_24 0x00000800 /* VDD voltage 2.3 ~ 2.4 */
-#define MMC_VDD_24_25 0x00001000 /* VDD voltage 2.4 ~ 2.5 */
-#define MMC_VDD_25_26 0x00002000 /* VDD voltage 2.5 ~ 2.6 */
-#define MMC_VDD_26_27 0x00004000 /* VDD voltage 2.6 ~ 2.7 */
-#define MMC_VDD_27_28 0x00008000 /* VDD voltage 2.7 ~ 2.8 */
-#define MMC_VDD_28_29 0x00010000 /* VDD voltage 2.8 ~ 2.9 */
-#define MMC_VDD_29_30 0x00020000 /* VDD voltage 2.9 ~ 3.0 */
-#define MMC_VDD_30_31 0x00040000 /* VDD voltage 3.0 ~ 3.1 */
-#define MMC_VDD_31_32 0x00080000 /* VDD voltage 3.1 ~ 3.2 */
-#define MMC_VDD_32_33 0x00100000 /* VDD voltage 3.2 ~ 3.3 */
-#define MMC_VDD_33_34 0x00200000 /* VDD voltage 3.3 ~ 3.4 */
-#define MMC_VDD_34_35 0x00400000 /* VDD voltage 3.4 ~ 3.5 */
-#define MMC_VDD_35_36 0x00800000 /* VDD voltage 3.5 ~ 3.6 */
-#define MMC_CARD_BUSY 0x80000000 /* Card Power up status bit */
-
-/*
- * Card Command Classes (CCC)
- */
-#define CCC_BASIC (1<<0) /* (0) Basic protocol functions */
- /* (CMD0,1,2,3,4,7,9,10,12,13,15) */
-#define CCC_STREAM_READ (1<<1) /* (1) Stream read commands */
- /* (CMD11) */
-#define CCC_BLOCK_READ (1<<2) /* (2) Block read commands */
- /* (CMD16,17,18) */
-#define CCC_STREAM_WRITE (1<<3) /* (3) Stream write commands */
- /* (CMD20) */
-#define CCC_BLOCK_WRITE (1<<4) /* (4) Block write commands */
- /* (CMD16,24,25,26,27) */
-#define CCC_ERASE (1<<5) /* (5) Ability to erase blocks */
- /* (CMD32,33,34,35,36,37,38,39) */
-#define CCC_WRITE_PROT (1<<6) /* (6) Able to write protect blocks */
- /* (CMD28,29,30) */
-#define CCC_LOCK_CARD (1<<7) /* (7) Able to lock down card */
- /* (CMD16,CMD42) */
-#define CCC_APP_SPEC (1<<8) /* (8) Application specific */
- /* (CMD55,56,57,ACMD*) */
-#define CCC_IO_MODE (1<<9) /* (9) I/O mode */
- /* (CMD5,39,40,52,53) */
-#define CCC_SWITCH (1<<10) /* (10) High speed switch */
- /* (CMD6,34,35,36,37,50) */
- /* (11) Reserved */
- /* (CMD?) */
-
-/*
- * CSD field definitions
- */
-
-#define CSD_STRUCT_VER_1_0 0 /* Valid for system specification 1.0 - 1.2 */
-#define CSD_STRUCT_VER_1_1 1 /* Valid for system specification 1.4 - 2.2 */
-#define CSD_STRUCT_VER_1_2 2 /* Valid for system specification 3.1 - 3.2 - 3.31 - 4.0 - 4.1 */
-#define CSD_STRUCT_EXT_CSD 3 /* Version is coded in CSD_STRUCTURE in EXT_CSD */
-
-#define CSD_SPEC_VER_0 0 /* Implements system specification 1.0 - 1.2 */
-#define CSD_SPEC_VER_1 1 /* Implements system specification 1.4 */
-#define CSD_SPEC_VER_2 2 /* Implements system specification 2.0 - 2.2 */
-#define CSD_SPEC_VER_3 3 /* Implements system specification 3.1 - 3.2 - 3.31 */
-#define CSD_SPEC_VER_4 4 /* Implements system specification 4.0 - 4.1 */
-
-/*
- * EXT_CSD fields
- */
-
-#define EXT_CSD_BUS_WIDTH 183 /* R/W */
-#define EXT_CSD_HS_TIMING 185 /* R/W */
-#define EXT_CSD_CARD_TYPE 196 /* RO */
-
-/*
- * EXT_CSD field definitions
- */
-
-#define EXT_CSD_CMD_SET_NORMAL (1<<0)
-#define EXT_CSD_CMD_SET_SECURE (1<<1)
-#define EXT_CSD_CMD_SET_CPSECURE (1<<2)
-
-#define EXT_CSD_CARD_TYPE_26 (1<<0) /* Card can run at 26MHz */
-#define EXT_CSD_CARD_TYPE_52 (1<<1) /* Card can run at 52MHz */
-
-#define EXT_CSD_BUS_WIDTH_1 0 /* Card is in 1 bit mode */
-#define EXT_CSD_BUS_WIDTH_4 1 /* Card is in 4 bit mode */
-#define EXT_CSD_BUS_WIDTH_8 2 /* Card is in 8 bit mode */
-
-/*
- * MMC_SWITCH access modes
- */
-
-#define MMC_SWITCH_MODE_CMD_SET 0x00 /* Change the command set */
-#define MMC_SWITCH_MODE_SET_BITS 0x01 /* Set bits which are 1 in value */
-#define MMC_SWITCH_MODE_CLEAR_BITS 0x02 /* Clear bits which are 1 in value */
-#define MMC_SWITCH_MODE_WRITE_BYTE 0x03 /* Set target to value */
-
-/*
- * SCR field definitions
- */
-
-#define SCR_SPEC_VER_0 0 /* Implements system specification 1.0 - 1.01 */
-#define SCR_SPEC_VER_1 1 /* Implements system specification 1.10 */
-#define SCR_SPEC_VER_2 2 /* Implements system specification 2.00 */
-
-/*
- * SD bus widths
- */
-#define SD_BUS_WIDTH_1 0
-#define SD_BUS_WIDTH_4 2
-
-#endif /* MMC_MMC_PROTOCOL_H */
-
diff --git a/include/linux/mmc/sd.h b/include/linux/mmc/sd.h
new file mode 100644
index 0000000..f310062
--- /dev/null
+++ b/include/linux/mmc/sd.h
@@ -0,0 +1,83 @@
+/*
+ * include/linux/mmc/sd.h
+ *
+ * Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+
+#ifndef MMC_SD_H
+#define MMC_SD_H
+
+/* SD commands type argument response */
+ /* class 0 */
+/* This is basically the same command as for MMC with some quirks. */
+#define SD_SEND_RELATIVE_ADDR 3 /* bcr R6 */
+#define SD_SEND_IF_COND 8 /* bcr [11:0] See below R7 */
+
+ /* class 10 */
+#define SD_SWITCH 6 /* adtc [31:0] See below R1 */
+
+ /* Application commands */
+#define SD_APP_SET_BUS_WIDTH 6 /* ac [1:0] bus width R1 */
+#define SD_APP_SEND_NUM_WR_BLKS 22 /* adtc R1 */
+#define SD_APP_OP_COND 41 /* bcr [31:0] OCR R3 */
+#define SD_APP_SEND_SCR 51 /* adtc R1 */
+
+/*
+ * SD_SWITCH argument format:
+ *
+ * [31] Check (0) or switch (1)
+ * [30:24] Reserved (0)
+ * [23:20] Function group 6
+ * [19:16] Function group 5
+ * [15:12] Function group 4
+ * [11:8] Function group 3
+ * [7:4] Function group 2
+ * [3:0] Function group 1
+ */
+
+/*
+ * SD_SEND_IF_COND argument format:
+ *
+ * [31:12] Reserved (0)
+ * [11:8] Host Voltage Supply Flags
+ * [7:0] Check Pattern (0xAA)
+ */
+
+/*
+ * SCR field definitions
+ */
+
+#define SCR_SPEC_VER_0 0 /* Implements system specification 1.0 - 1.01 */
+#define SCR_SPEC_VER_1 1 /* Implements system specification 1.10 */
+#define SCR_SPEC_VER_2 2 /* Implements system specification 2.00 */
+
+/*
+ * SD bus widths
+ */
+#define SD_BUS_WIDTH_1 0
+#define SD_BUS_WIDTH_4 2
+
+/*
+ * SD_SWITCH mode
+ */
+#define SD_SWITCH_CHECK 0
+#define SD_SWITCH_SET 1
+
+/*
+ * SD_SWITCH function groups
+ */
+#define SD_SWITCH_GRP_ACCESS 0
+
+/*
+ * SD_SWITCH access modes
+ */
+#define SD_SWITCH_ACCESS_DEF 0
+#define SD_SWITCH_ACCESS_HS 1
+
+#endif
+
diff --git a/include/linux/tifm.h b/include/linux/tifm.h
index 3deb0a6..2a19698 100644
--- a/include/linux/tifm.h
+++ b/include/linux/tifm.h
@@ -14,16 +14,16 @@
#include <linux/spinlock.h>
#include <linux/interrupt.h>
-#include <linux/wait.h>
#include <linux/delay.h>
#include <linux/pci.h>
-#include <linux/kthread.h>
+#include <linux/workqueue.h>
/* Host registers (relative to pci base address): */
enum {
FM_SET_INTERRUPT_ENABLE = 0x008,
FM_CLEAR_INTERRUPT_ENABLE = 0x00c,
- FM_INTERRUPT_STATUS = 0x014 };
+ FM_INTERRUPT_STATUS = 0x014
+};
/* Socket registers (relative to socket base address): */
enum {
@@ -58,14 +58,8 @@
SOCK_MS_DATA = 0x188,
SOCK_MS_STATUS = 0x18c,
SOCK_MS_SYSTEM = 0x190,
- SOCK_FIFO_ACCESS = 0x200 };
-
-
-#define TIFM_IRQ_ENABLE 0x80000000
-#define TIFM_IRQ_SOCKMASK(x) (x)
-#define TIFM_IRQ_CARDMASK(x) ((x) << 8)
-#define TIFM_IRQ_FIFOMASK(x) ((x) << 16)
-#define TIFM_IRQ_SETALL 0xffffffff
+ SOCK_FIFO_ACCESS = 0x200
+};
#define TIFM_CTRL_LED 0x00000040
#define TIFM_CTRL_FAST_CLK 0x00000100
@@ -73,63 +67,76 @@
#define TIFM_SOCK_STATE_OCCUPIED 0x00000008
#define TIFM_SOCK_STATE_POWERED 0x00000080
-#define TIFM_FIFO_ENABLE 0x00000001 /* Meaning of this constant is unverified */
+#define TIFM_FIFO_ENABLE 0x00000001
+#define TIFM_FIFO_READY 0x00000001
#define TIFM_FIFO_INT_SETALL 0x0000ffff
-#define TIFM_FIFO_INTMASK 0x00000005 /* Meaning of this constant is unverified */
+#define TIFM_FIFO_INTMASK 0x00000005
-#define TIFM_DMA_RESET 0x00000002 /* Meaning of this constant is unverified */
-#define TIFM_DMA_TX 0x00008000 /* Meaning of this constant is unverified */
-#define TIFM_DMA_EN 0x00000001 /* Meaning of this constant is unverified */
+#define TIFM_DMA_RESET 0x00000002
+#define TIFM_DMA_TX 0x00008000
+#define TIFM_DMA_EN 0x00000001
+#define TIFM_DMA_TSIZE 0x0000007f
-typedef enum {FM_NULL = 0, FM_XD = 0x01, FM_MS = 0x02, FM_SD = 0x03} tifm_media_id;
+#define TIFM_TYPE_XD 1
+#define TIFM_TYPE_MS 2
+#define TIFM_TYPE_SD 3
+
+struct tifm_device_id {
+ unsigned char type;
+};
struct tifm_driver;
struct tifm_dev {
- char __iomem *addr;
- spinlock_t lock;
- tifm_media_id media_id;
- unsigned int socket_id;
+ char __iomem *addr;
+ spinlock_t lock;
+ unsigned char type;
+ unsigned int socket_id;
- void (*signal_irq)(struct tifm_dev *sock,
- unsigned int sock_irq_status);
+ void (*card_event)(struct tifm_dev *sock);
+ void (*data_event)(struct tifm_dev *sock);
- struct tifm_driver *drv;
- struct device dev;
+ struct device dev;
};
struct tifm_driver {
- tifm_media_id *id_table;
- int (*probe)(struct tifm_dev *dev);
- void (*remove)(struct tifm_dev *dev);
- int (*suspend)(struct tifm_dev *dev,
- pm_message_t state);
- int (*resume)(struct tifm_dev *dev);
+ struct tifm_device_id *id_table;
+ int (*probe)(struct tifm_dev *dev);
+ void (*remove)(struct tifm_dev *dev);
+ int (*suspend)(struct tifm_dev *dev,
+ pm_message_t state);
+ int (*resume)(struct tifm_dev *dev);
- struct device_driver driver;
+ struct device_driver driver;
};
struct tifm_adapter {
- char __iomem *addr;
- spinlock_t lock;
- unsigned int irq_status;
- unsigned int socket_change_set;
- wait_queue_head_t change_set_notify;
- unsigned int id;
- unsigned int num_sockets;
- struct tifm_dev **sockets;
- struct task_struct *media_switcher;
- struct class_device cdev;
- struct device *dev;
+ char __iomem *addr;
+ spinlock_t lock;
+ unsigned int irq_status;
+ unsigned int socket_change_set;
+ unsigned int id;
+ unsigned int num_sockets;
+ struct completion *finish_me;
- void (*eject)(struct tifm_adapter *fm, struct tifm_dev *sock);
+ struct work_struct media_switcher;
+ struct class_device cdev;
+
+ void (*eject)(struct tifm_adapter *fm,
+ struct tifm_dev *sock);
+
+ struct tifm_dev *sockets[0];
};
-struct tifm_adapter *tifm_alloc_adapter(void);
-void tifm_free_device(struct device *dev);
-void tifm_free_adapter(struct tifm_adapter *fm);
-int tifm_add_adapter(struct tifm_adapter *fm, int (*mediathreadfn)(void *data));
+struct tifm_adapter *tifm_alloc_adapter(unsigned int num_sockets,
+ struct device *dev);
+int tifm_add_adapter(struct tifm_adapter *fm);
void tifm_remove_adapter(struct tifm_adapter *fm);
-struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm);
+void tifm_free_adapter(struct tifm_adapter *fm);
+
+void tifm_free_device(struct device *dev);
+struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm, unsigned int id,
+ unsigned char type);
+
int tifm_register_driver(struct tifm_driver *drv);
void tifm_unregister_driver(struct tifm_driver *drv);
void tifm_eject(struct tifm_dev *sock);
@@ -137,11 +144,11 @@
int direction);
void tifm_unmap_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
int direction);
-
+void tifm_queue_work(struct work_struct *work);
static inline void *tifm_get_drvdata(struct tifm_dev *dev)
{
- return dev_get_drvdata(&dev->dev);
+ return dev_get_drvdata(&dev->dev);
}
static inline void tifm_set_drvdata(struct tifm_dev *dev, void *data)
@@ -149,8 +156,4 @@
dev_set_drvdata(&dev->dev, data);
}
-struct tifm_device_id {
- tifm_media_id media_id;
-};
-
#endif
