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android-kvm / linux / 0e5dd45ce4c41d3e3857116a77f34f04c99e78ad / . / drivers / staging / csr / drv.c
blob: bdc25236ab008e8b21e43e071bf09a616bf212eb [file] [log] [blame]
/*
* ---------------------------------------------------------------------------
* FILE: drv.c
*
* PURPOSE:
* Conventional device interface for debugging/monitoring of the
* driver and h/w using unicli. This interface is also being used
* by the SME linux implementation and the helper apps.
*
* Copyright (C) 2005-2009 by Cambridge Silicon Radio Ltd.
*
* Refer to LICENSE.txt included with this source code for details on
* the license terms.
*
* ---------------------------------------------------------------------------
*/
/*
* Porting Notes:
* Part of this file contains an example for how to glue the OS layer
* with the HIP core lib, the SDIO glue layer, and the SME.
*
* When the unifi_sdio.ko modules loads, the linux kernel calls unifi_load().
* unifi_load() calls uf_sdio_load() which is exported by the SDIO glue
* layer. uf_sdio_load() registers this driver with the underlying SDIO driver.
* When a card is detected, the SDIO glue layer calls register_unifi_sdio()
* to pass the SDIO function context and ask the OS layer to initialise
* the card. register_unifi_sdio() allocates all the private data of the OS
* layer and calls uf_run_unifihelper() to start the SME. The SME calls
* unifi_sys_wifi_on_req() which uses the HIP core lib to initialise the card.
*/
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/poll.h>
#include <asm/uaccess.h>
#include <linux/jiffies.h>
#include <linux/version.h>
#include "csr_wifi_hip_unifiversion.h"
#include "unifi_priv.h"
#include "csr_wifi_hip_conversions.h"
#include "unifi_native.h"
/* Module parameter variables */
int buswidth = 0; /* 0 means use default, values 1,4 */
int sdio_clock = 50000; /* kHz */
int unifi_debug = 0;
/* fw_init prevents f/w initialisation on error. */
int fw_init[MAX_UNIFI_DEVS] = {-1, -1};
int use_5g = 0;
int led_mask = 0; /* 0x0c00 for dev-pc-1503c, dev-pc-1528a */
int disable_hw_reset = 0;
int disable_power_control = 0;
int enable_wol = UNIFI_WOL_OFF; /* 0 for none, 1 for SDIO IRQ, 2 for PIO */
#if (defined CSR_SUPPORT_SME) && (defined CSR_SUPPORT_WEXT)
int tl_80211d = (int)CSR_WIFI_SME_80211D_TRUST_LEVEL_MIB;
#endif
int sdio_block_size = -1; /* Override SDIO block size */
int sdio_byte_mode = 0; /* 0 for block mode + padding, 1 for byte mode */
int coredump_max = CSR_WIFI_HIP_NUM_COREDUMP_BUFFERS;
int run_bh_once = -1; /* Set for scheduled interrupt mode, -1 = default */
int bh_priority = -1;
#ifdef CSR_WIFI_HIP_DEBUG_OFFLINE
#define UNIFI_LOG_HIP_SIGNALS_FILTER_BULKDATA (1 << 1)
#define UNIFI_LOG_HIP_SIGNALS_FILTER_TIMESTAMP (1 << 2)
int log_hip_signals = 0;
#endif
MODULE_DESCRIPTION("CSR UniFi (SDIO)");
module_param(buswidth, int, S_IRUGO|S_IWUSR);
module_param(sdio_clock, int, S_IRUGO|S_IWUSR);
module_param(unifi_debug, int, S_IRUGO|S_IWUSR);
module_param_array(fw_init, int, NULL, S_IRUGO|S_IWUSR);
module_param(use_5g, int, S_IRUGO|S_IWUSR);
module_param(led_mask, int, S_IRUGO|S_IWUSR);
module_param(disable_hw_reset, int, S_IRUGO|S_IWUSR);
module_param(disable_power_control, int, S_IRUGO|S_IWUSR);
module_param(enable_wol, int, S_IRUGO|S_IWUSR);
#if (defined CSR_SUPPORT_SME) && (defined CSR_SUPPORT_WEXT)
module_param(tl_80211d, int, S_IRUGO|S_IWUSR);
#endif
module_param(sdio_block_size, int, S_IRUGO|S_IWUSR);
module_param(sdio_byte_mode, int, S_IRUGO|S_IWUSR);
module_param(coredump_max, int, S_IRUGO|S_IWUSR);
module_param(run_bh_once, int, S_IRUGO|S_IWUSR);
module_param(bh_priority, int, S_IRUGO|S_IWUSR);
#ifdef CSR_WIFI_HIP_DEBUG_OFFLINE
module_param(log_hip_signals, int, S_IRUGO|S_IWUSR);
#endif
MODULE_PARM_DESC(buswidth, "SDIO bus width (0=default), set 1 for 1-bit or 4 for 4-bit mode");
MODULE_PARM_DESC(sdio_clock, "SDIO bus frequency in kHz, (default = 50 MHz)");
MODULE_PARM_DESC(unifi_debug, "Diagnostic reporting level");
MODULE_PARM_DESC(fw_init, "Set to 0 to prevent f/w initialization on error");
MODULE_PARM_DESC(use_5g, "Use the 5G (802.11a) radio band");
MODULE_PARM_DESC(led_mask, "LED mask flags");
MODULE_PARM_DESC(disable_hw_reset, "Set to 1 to disable hardware reset");
MODULE_PARM_DESC(disable_power_control, "Set to 1 to disable SDIO power control");
MODULE_PARM_DESC(enable_wol, "Enable wake-on-wlan function 0=off, 1=SDIO, 2=PIO");
#if (defined CSR_SUPPORT_SME) && (defined CSR_SUPPORT_WEXT)
MODULE_PARM_DESC(tl_80211d, "802.11d Trust Level (1-6, default = 5)");
#endif
MODULE_PARM_DESC(sdio_block_size, "Set to override SDIO block size");
MODULE_PARM_DESC(sdio_byte_mode, "Set to 1 for byte mode SDIO");
MODULE_PARM_DESC(coredump_max, "Number of chip mini-coredump buffers to allocate");
MODULE_PARM_DESC(run_bh_once, "Run BH only when firmware interrupts");
MODULE_PARM_DESC(bh_priority, "Modify the BH thread priority");
#ifdef CSR_WIFI_HIP_DEBUG_OFFLINE
MODULE_PARM_DESC(log_hip_signals, "Set to 1 to enable HIP signal offline logging");
#endif
/* Callback for event logging to UDI clients */
static void udi_log_event(ul_client_t *client,
const u8 *signal, int signal_len,
const bulk_data_param_t *bulkdata,
int dir);
static void udi_set_log_filter(ul_client_t *pcli,
unifiio_filter_t *udi_filter);
/* Mutex to protect access to priv->sme_cli */
DEFINE_SEMAPHORE(udi_mutex);
s32 CsrHipResultToStatus(CsrResult csrResult)
{
s32 r = -EIO;
switch (csrResult)
{
case CSR_RESULT_SUCCESS:
r = 0;
break;
case CSR_WIFI_HIP_RESULT_RANGE:
r = -ERANGE;
break;
case CSR_WIFI_HIP_RESULT_NO_DEVICE:
r = -ENODEV;
break;
case CSR_WIFI_HIP_RESULT_INVALID_VALUE:
r = -EINVAL;
break;
case CSR_WIFI_HIP_RESULT_NOT_FOUND:
r = -ENOENT;
break;
case CSR_WIFI_HIP_RESULT_NO_SPACE:
r = -ENOSPC;
break;
case CSR_WIFI_HIP_RESULT_NO_MEMORY:
r = -ENOMEM;
break;
case CSR_RESULT_FAILURE:
r = -EIO;
break;
default:
/*unifi_warning(card->ospriv, "CsrHipResultToStatus: Unrecognised csrResult error code: %d\n", csrResult);*/
r = -EIO;
}
return r;
}
static const char*
trace_putest_cmdid(unifi_putest_command_t putest_cmd)
{
switch (putest_cmd) {
case UNIFI_PUTEST_START:
return "START";
case UNIFI_PUTEST_STOP:
return "STOP";
case UNIFI_PUTEST_SET_SDIO_CLOCK:
return "SET CLOCK";
case UNIFI_PUTEST_CMD52_READ:
return "CMD52R";
case UNIFI_PUTEST_CMD52_BLOCK_READ:
return "CMD52BR";
case UNIFI_PUTEST_CMD52_WRITE:
return "CMD52W";
case UNIFI_PUTEST_DL_FW:
return "D/L FW";
case UNIFI_PUTEST_DL_FW_BUFF:
return "D/L FW BUFFER";
case UNIFI_PUTEST_COREDUMP_PREPARE:
return "PREPARE COREDUMP";
case UNIFI_PUTEST_GP_READ16:
return "GP16R";
case UNIFI_PUTEST_GP_WRITE16:
return "GP16W";
default:
return "ERROR: unrecognised command";
}
}
#ifdef CSR_WIFI_HIP_DEBUG_OFFLINE
int uf_register_hip_offline_debug(unifi_priv_t *priv)
{
ul_client_t *udi_cli;
int i;
udi_cli = ul_register_client(priv, CLI_USING_WIRE_FORMAT, udi_log_event);
if (udi_cli == NULL) {
/* Too many clients already using this device */
unifi_error(priv, "Too many UDI clients already open\n");
return -ENOSPC;
}
unifi_trace(priv, UDBG1, "Offline HIP client is registered\n");
down(&priv->udi_logging_mutex);
udi_cli->event_hook = udi_log_event;
unifi_set_udi_hook(priv->card, logging_handler);
/* Log all signals by default */
for (i = 0; i < SIG_FILTER_SIZE; i++) {
udi_cli->signal_filter[i] = 0xFFFF;
}
priv->logging_client = udi_cli;
up(&priv->udi_logging_mutex);
return 0;
}
int uf_unregister_hip_offline_debug(unifi_priv_t *priv)
{
ul_client_t *udi_cli = priv->logging_client;
if (udi_cli == NULL)
{
unifi_error(priv, "Unknown HIP client unregister request\n");
return -ERANGE;
}
unifi_trace(priv, UDBG1, "Offline HIP client is unregistered\n");
down(&priv->udi_logging_mutex);
priv->logging_client = NULL;
udi_cli->event_hook = NULL;
up(&priv->udi_logging_mutex);
ul_deregister_client(udi_cli);
return 0;
}
#endif
/*
* ---------------------------------------------------------------------------
* unifi_open
* unifi_release
*
* Open and release entry points for the UniFi debug driver.
*
* Arguments:
* Normal linux driver args.
*
* Returns:
* Linux error code.
* ---------------------------------------------------------------------------
*/
static int
unifi_open(struct inode *inode, struct file *file)
{
int devno;
unifi_priv_t *priv;
ul_client_t *udi_cli;
devno = MINOR(inode->i_rdev) >> 1;
/*
* Increase the ref_count for the char device clients.
* Make sure you call uf_put_instance() to decreace it if
* unifi_open returns an error.
*/
priv = uf_get_instance(devno);
if (priv == NULL) {
unifi_error(NULL, "unifi_open: No device present\n");
return -ENODEV;
}
/* Register this instance in the client's list. */
/* The minor number determines the nature of the client (Unicli or SME). */
if (MINOR(inode->i_rdev) & 0x1) {
udi_cli = ul_register_client(priv, CLI_USING_WIRE_FORMAT, udi_log_event);
if (udi_cli == NULL) {
/* Too many clients already using this device */
unifi_error(priv, "Too many clients already open\n");
uf_put_instance(devno);
return -ENOSPC;
}
unifi_trace(priv, UDBG1, "Client is registered to /dev/unifiudi%d\n", devno);
} else {
/*
* Even-numbered device nodes are the control application.
* This is the userspace helper containing SME or
* unifi_manager.
*/
down(&udi_mutex);
#ifdef CSR_SME_USERSPACE
/* Check if a config client is already attached */
if (priv->sme_cli) {
up(&udi_mutex);
uf_put_instance(devno);
unifi_info(priv, "There is already a configuration client using the character device\n");
return -EBUSY;
}
#endif /* CSR_SME_USERSPACE */
#ifdef CSR_SUPPORT_SME
udi_cli = ul_register_client(priv,
CLI_USING_WIRE_FORMAT | CLI_SME_USERSPACE,
sme_log_event);
#else
/* Config client for native driver */
udi_cli = ul_register_client(priv,
0,
sme_native_log_event);
#endif
if (udi_cli == NULL) {
/* Too many clients already using this device */
up(&udi_mutex);
uf_put_instance(devno);
unifi_error(priv, "Too many clients already open\n");
return -ENOSPC;
}
/*
* Fill-in the pointer to the configuration client.
* This is the SME userspace helper or unifi_manager.
* Not used in the SME embedded version.
*/
unifi_trace(priv, UDBG1, "SME client (id:%d s:0x%X) is registered\n",
udi_cli->client_id, udi_cli->sender_id);
/* Store the SME UniFi Linux Client */
if (priv->sme_cli == NULL) {
priv->sme_cli = udi_cli;
}
up(&udi_mutex);
}
/*
* Store the pointer to the client.
* All char driver's entry points will pass this pointer.
*/
file->private_data = udi_cli;
return 0;
} /* unifi_open() */
static int
unifi_release(struct inode *inode, struct file *filp)
{
ul_client_t *udi_cli = (void*)filp->private_data;
int devno;
unifi_priv_t *priv;
priv = uf_find_instance(udi_cli->instance);
if (!priv) {
unifi_error(priv, "unifi_close: instance for device not found\n");
return -ENODEV;
}
devno = MINOR(inode->i_rdev) >> 1;
/* Even device nodes are the config client (i.e. SME or unifi_manager) */
if ((MINOR(inode->i_rdev) & 0x1) == 0) {
if (priv->sme_cli != udi_cli) {
unifi_notice(priv, "Surprise closing config device: not the sme client\n");
}
unifi_notice(priv, "SME client close (unifi%d)\n", devno);
/*
* Clear sme_cli before calling unifi_sys_... so it doesn't try to
* queue a reply to the (now gone) SME.
*/
down(&udi_mutex);
priv->sme_cli = NULL;
up(&udi_mutex);
#ifdef CSR_SME_USERSPACE
/* Power-down when config client closes */
{
CsrWifiRouterCtrlWifiOffReq req = {{CSR_WIFI_ROUTER_CTRL_HIP_REQ, 0, 0, 0, NULL}};
CsrWifiRouterCtrlWifiOffReqHandler(priv, &req.common);
}
uf_sme_deinit(priv);
/* It is possible that a blocking SME request was made from another process
* which did not get read by the SME before the WifiOffReq.
* So check for a pending request which will go unanswered and cancel
* the wait for event. As only one blocking request can be in progress at
* a time, up to one event should be completed.
*/
uf_sme_cancel_request(priv, 0);
#endif /* CSR_SME_USERSPACE */
} else {
unifi_trace(priv, UDBG2, "UDI client close (unifiudi%d)\n", devno);
/* If the pointer matches the logging client, stop logging. */
down(&priv->udi_logging_mutex);
if (udi_cli == priv->logging_client) {
priv->logging_client = NULL;
}
up(&priv->udi_logging_mutex);
if (udi_cli == priv->amp_client) {
priv->amp_client = NULL;
}
}
/* Deregister this instance from the client's list. */
ul_deregister_client(udi_cli);
uf_put_instance(devno);
return 0;
} /* unifi_release() */
/*
* ---------------------------------------------------------------------------
* unifi_read
*
* The read() driver entry point.
*
* Arguments:
* filp The file descriptor returned by unifi_open()
* p The user space buffer to copy the read data
* len The size of the p buffer
* poff
*
* Returns:
* number of bytes read or an error code on failure
* ---------------------------------------------------------------------------
*/
static ssize_t
unifi_read(struct file *filp, char *p, size_t len, loff_t *poff)
{
ul_client_t *pcli = (void*)filp->private_data;
unifi_priv_t *priv;
udi_log_t *logptr = NULL;
udi_msg_t *msgptr;
struct list_head *l;
int msglen;
priv = uf_find_instance(pcli->instance);
if (!priv) {
unifi_error(priv, "invalid priv\n");
return -ENODEV;
}
if (!pcli->udi_enabled) {
unifi_error(priv, "unifi_read: unknown client.");
return -EINVAL;
}
if (list_empty(&pcli->udi_log)) {
if (filp->f_flags & O_NONBLOCK) {
/* Non-blocking - just return if the udi_log is empty */
return 0;
} else {
/* Blocking - wait on the UDI wait queue */
if (wait_event_interruptible(pcli->udi_wq,
!list_empty(&pcli->udi_log)))
{
unifi_error(priv, "unifi_read: wait_event_interruptible failed.");
return -ERESTARTSYS;
}
}
}
/* Read entry from list head and remove it from the list */
if (down_interruptible(&pcli->udi_sem)) {
return -ERESTARTSYS;
}
l = pcli->udi_log.next;
list_del(l);
up(&pcli->udi_sem);
/* Get a pointer to whole struct */
logptr = list_entry(l, udi_log_t, q);
if (logptr == NULL) {
unifi_error(priv, "unifi_read: failed to get event.\n");
return -EINVAL;
}
/* Get the real message */
msgptr = &logptr->msg;
msglen = msgptr->length;
if (msglen > len) {
printk(KERN_WARNING "truncated read to %d actual msg len is %lu\n", msglen, (long unsigned int)len);
msglen = len;
}
/* and pass it to the client (SME or Unicli). */
if (copy_to_user(p, msgptr, msglen))
{
printk(KERN_ERR "Failed to copy UDI log to user\n");
kfree(logptr);
return -EFAULT;
}
/* It is our resposibility to free the message buffer. */
kfree(logptr);
return msglen;
} /* unifi_read() */
/*
* ---------------------------------------------------------------------------
* udi_send_signal_unpacked
*
* Sends an unpacked signal to UniFi.
*
* Arguments:
* priv Pointer to private context struct
* data Pointer to request structure and data to send
* data_len Length of data in data pointer.
*
* Returns:
* Number of bytes written, error otherwise.
*
* Notes:
* All clients that use this function to send a signal to the unifi
* must use the host formatted structures.
* ---------------------------------------------------------------------------
*/
static int
udi_send_signal_unpacked(unifi_priv_t *priv, unsigned char* data, uint data_len)
{
CSR_SIGNAL *sigptr = (CSR_SIGNAL*)data;
CSR_DATAREF *datarefptr;
bulk_data_param_t bulk_data;
uint signal_size, i;
uint bulk_data_offset = 0;
int bytecount, r;
CsrResult csrResult;
/* Number of bytes in the signal */
signal_size = SigGetSize(sigptr);
if (!signal_size || (signal_size > data_len)) {
unifi_error(priv, "unifi_sme_mlme_req - Invalid signal 0x%x size should be %d bytes\n",
sigptr->SignalPrimitiveHeader.SignalId,
signal_size);
return -EINVAL;
}
bytecount = signal_size;
/* Get a pointer to the information of the first data reference */
datarefptr = (CSR_DATAREF*)&sigptr->u;
/* Initialize the offset in the data buffer, bulk data is right after the signal. */
bulk_data_offset = signal_size;
/* store the references and the size of the bulk data to the bulkdata structure */
for (i = 0; i < UNIFI_MAX_DATA_REFERENCES; i++) {
/* the length of the bulk data is in the signal */
if ((datarefptr+i)->DataLength) {
void *dest;
csrResult = unifi_net_data_malloc(priv, &bulk_data.d[i], (datarefptr+i)->DataLength);
if (csrResult != CSR_RESULT_SUCCESS) {
unifi_error(priv, "udi_send_signal_unpacked: failed to allocate request_data.\n");
return -EIO;
}
dest = (void*)bulk_data.d[i].os_data_ptr;
memcpy(dest, data + bulk_data_offset, bulk_data.d[i].data_length);
} else {
bulk_data.d[i].data_length = 0;
}
bytecount += bulk_data.d[i].data_length;
/* advance the offset, to point the next bulk data */
bulk_data_offset += bulk_data.d[i].data_length;
}
unifi_trace(priv, UDBG3, "SME Send: signal 0x%.4X\n", sigptr->SignalPrimitiveHeader.SignalId);
/* Send the signal. */
r = ul_send_signal_unpacked(priv, sigptr, &bulk_data);
if (r < 0) {
unifi_error(priv, "udi_send_signal_unpacked: send failed (%d)\n", r);
for(i=0;i<UNIFI_MAX_DATA_REFERENCES;i++) {
if(bulk_data.d[i].data_length != 0) {
unifi_net_data_free(priv, &bulk_data.d[i]);
}
}
return -EIO;
}
return bytecount;
} /* udi_send_signal_unpacked() */
/*
* ---------------------------------------------------------------------------
* udi_send_signal_raw
*
* Sends a packed signal to UniFi.
*
* Arguments:
* priv Pointer to private context struct
* buf Pointer to request structure and data to send
* buflen Length of data in data pointer.
*
* Returns:
* Number of bytes written, error otherwise.
*
* Notes:
* All clients that use this function to send a signal to the unifi
* must use the wire formatted structures.
* ---------------------------------------------------------------------------
*/
static int
udi_send_signal_raw(unifi_priv_t *priv, unsigned char *buf, int buflen)
{
int signal_size;
int sig_id;
bulk_data_param_t data_ptrs;
int i, r;
unsigned int num_data_refs;
int bytecount;
CsrResult csrResult;
/*
* The signal is the first thing in buf, the signal id is the
* first 16 bits of the signal.
*/
/* Number of bytes in the signal */
sig_id = GET_SIGNAL_ID(buf);
signal_size = buflen;
signal_size -= GET_PACKED_DATAREF_LEN(buf, 0);
signal_size -= GET_PACKED_DATAREF_LEN(buf, 1);
if ((signal_size <= 0) || (signal_size > buflen)) {
unifi_error(priv, "udi_send_signal_raw - Couldn't find length of signal 0x%x\n",
sig_id);
return -EINVAL;
}
unifi_trace(priv, UDBG2, "udi_send_signal_raw: signal 0x%.4X len:%d\n",
sig_id, signal_size);
/* Zero the data ref arrays */
memset(&data_ptrs, 0, sizeof(data_ptrs));
/*
* Find the number of associated bulk data packets. Scan through
* the data refs to check that we have enough data and pick out
* pointers to appended bulk data.
*/
num_data_refs = 0;
bytecount = signal_size;
for (i = 0; i < UNIFI_MAX_DATA_REFERENCES; ++i)
{
unsigned int len = GET_PACKED_DATAREF_LEN(buf, i);
unifi_trace(priv, UDBG3, "udi_send_signal_raw: data_ref length = %d\n", len);
if (len != 0) {
void *dest;
csrResult = unifi_net_data_malloc(priv, &data_ptrs.d[i], len);
if (csrResult != CSR_RESULT_SUCCESS) {
unifi_error(priv, "udi_send_signal_raw: failed to allocate request_data.\n");
return -EIO;
}
dest = (void*)data_ptrs.d[i].os_data_ptr;
memcpy(dest, buf + bytecount, len);
bytecount += len;
num_data_refs++;
}
data_ptrs.d[i].data_length = len;
}
unifi_trace(priv, UDBG3, "Queueing signal 0x%.4X from UDI with %u data refs\n",
sig_id,
num_data_refs);
if (bytecount > buflen) {
unifi_error(priv, "udi_send_signal_raw: Not enough data (%d instead of %d)\n", buflen, bytecount);
return -EINVAL;
}
/* Send the signal calling the function that uses the wire-formatted signals. */
r = ul_send_signal_raw(priv, buf, signal_size, &data_ptrs);
if (r < 0) {
unifi_error(priv, "udi_send_signal_raw: send failed (%d)\n", r);
return -EIO;
}
#ifdef CSR_NATIVE_LINUX
if (sig_id == CSR_MLME_POWERMGT_REQUEST_ID) {
int power_mode = CSR_GET_UINT16_FROM_LITTLE_ENDIAN((buf +
SIZEOF_SIGNAL_HEADER + (UNIFI_MAX_DATA_REFERENCES*SIZEOF_DATAREF)));
#ifdef CSR_SUPPORT_WEXT
/* Overide the wext power mode to the new value */
priv->wext_conf.power_mode = power_mode;
#endif
/* Configure deep sleep signaling */
if (power_mode || (priv->interfacePriv[0]->connected == UnifiNotConnected)) {
csrResult = unifi_configure_low_power_mode(priv->card,
UNIFI_LOW_POWER_ENABLED,
UNIFI_PERIODIC_WAKE_HOST_DISABLED);
} else {
csrResult = unifi_configure_low_power_mode(priv->card,
UNIFI_LOW_POWER_DISABLED,
UNIFI_PERIODIC_WAKE_HOST_DISABLED);
}
}
#endif
return bytecount;
} /* udi_send_signal_raw */
/*
* ---------------------------------------------------------------------------
* unifi_write
*
* The write() driver entry point.
* A UniFi Debug Interface client such as unicli can write a signal
* plus bulk data to the driver for sending to the UniFi chip.
*
* Only one signal may be sent per write operation.
*
* Arguments:
* filp The file descriptor returned by unifi_open()
* p The user space buffer to get the data from
* len The size of the p buffer
* poff
*
* Returns:
* number of bytes written or an error code on failure
* ---------------------------------------------------------------------------
*/
static ssize_t
unifi_write(struct file *filp, const char *p, size_t len, loff_t *poff)
{
ul_client_t *pcli = (ul_client_t*)filp->private_data;
unifi_priv_t *priv;
unsigned char *buf;
unsigned char *bufptr;
int remaining;
int bytes_written;
int r;
bulk_data_param_t bulkdata;
CsrResult csrResult;
priv = uf_find_instance(pcli->instance);
if (!priv) {
unifi_error(priv, "invalid priv\n");
return -ENODEV;
}
unifi_trace(priv, UDBG5, "unifi_write: len = %d\n", len);
if (!pcli->udi_enabled) {
unifi_error(priv, "udi disabled\n");
return -EINVAL;
}
/*
* AMP client sends only one signal at a time, so we can use
* unifi_net_data_malloc to save the extra copy.
*/
if (pcli == priv->amp_client) {
int signal_size;
int sig_id;
unsigned char *signal_buf;
char *user_data_buf;
csrResult = unifi_net_data_malloc(priv, &bulkdata.d[0], len);
if (csrResult != CSR_RESULT_SUCCESS) {
unifi_error(priv, "unifi_write: failed to allocate request_data.\n");
return -ENOMEM;
}
user_data_buf = (char*)bulkdata.d[0].os_data_ptr;
/* Get the data from the AMP client. */
if (copy_from_user((void*)user_data_buf, p, len)) {
unifi_error(priv, "unifi_write: copy from user failed\n");
unifi_net_data_free(priv, &bulkdata.d[0]);
return -EFAULT;
}
bulkdata.d[1].os_data_ptr = NULL;
bulkdata.d[1].data_length = 0;
/* Number of bytes in the signal */
sig_id = GET_SIGNAL_ID(bulkdata.d[0].os_data_ptr);
signal_size = len;
signal_size -= GET_PACKED_DATAREF_LEN(bulkdata.d[0].os_data_ptr, 0);
signal_size -= GET_PACKED_DATAREF_LEN(bulkdata.d[0].os_data_ptr, 1);
if ((signal_size <= 0) || (signal_size > len)) {
unifi_error(priv, "unifi_write - Couldn't find length of signal 0x%x\n",
sig_id);
unifi_net_data_free(priv, &bulkdata.d[0]);
return -EINVAL;
}
unifi_trace(priv, UDBG2, "unifi_write: signal 0x%.4X len:%d\n",
sig_id, signal_size);
/* Allocate a buffer for the signal */
signal_buf = kmemdup(bulkdata.d[0].os_data_ptr, signal_size,
GFP_KERNEL);
if (!signal_buf) {
unifi_net_data_free(priv, &bulkdata.d[0]);
return -ENOMEM;
}
/* Get the signal from the os_data_ptr */
signal_buf[5] = (pcli->sender_id >> 8) & 0xff;
if (signal_size < len) {
/* Remove the signal from the os_data_ptr */
bulkdata.d[0].data_length -= signal_size;
bulkdata.d[0].os_data_ptr += signal_size;
} else {
bulkdata.d[0].data_length = 0;
bulkdata.d[0].os_data_ptr = NULL;
}
/* Send the signal calling the function that uses the wire-formatted signals. */
r = ul_send_signal_raw(priv, signal_buf, signal_size, &bulkdata);
if (r < 0) {
unifi_error(priv, "unifi_write: send failed (%d)\n", r);
if (bulkdata.d[0].os_data_ptr != NULL) {
unifi_net_data_free(priv, &bulkdata.d[0]);
}
}
/* Free the signal buffer and return */
kfree(signal_buf);
return len;
}
buf = kmalloc(len, GFP_KERNEL);
if (!buf) {
return -ENOMEM;
}
/* Get the data from the client (SME or Unicli). */
if (copy_from_user((void*)buf, p, len)) {
unifi_error(priv, "copy from user failed\n");
kfree(buf);
return -EFAULT;
}
/*
* In SME userspace build read() contains a SYS or MGT message.
* Note that even though the SME sends one signal at a time, we can not
* use unifi_net_data_malloc because in the early stages, before having
* initialised the core, it will fail since the I/O block size is unknown.
*/
#ifdef CSR_SME_USERSPACE
if (pcli->configuration & CLI_SME_USERSPACE) {
CsrWifiRouterTransportRecv(priv, buf, len);
kfree(buf);
return len;
}
#endif
/* ul_send_signal_raw will do a sanity check of len against signal content */
/*
* udi_send_signal_raw() and udi_send_signal_unpacked() return the number of bytes consumed.
* A write call can pass multiple signal concatenated together.
*/
bytes_written = 0;
remaining = len;
bufptr = buf;
while (remaining > 0)
{
int r;
/*
* Set the SenderProcessId.
* The SignalPrimitiveHeader is the first 3 16-bit words of the signal,
* the SenderProcessId is bytes 4,5.
* The MSB of the sender ID needs to be set to the client ID.
* The LSB is controlled by the SME.
*/
bufptr[5] = (pcli->sender_id >> 8) & 0xff;
/* use the appropriate interface, depending on the clients' configuration */
if (pcli->configuration & CLI_USING_WIRE_FORMAT) {
unifi_trace(priv, UDBG1, "unifi_write: call udi_send_signal().\n");
r = udi_send_signal_raw(priv, bufptr, remaining);
} else {
r = udi_send_signal_unpacked(priv, bufptr, remaining);
}
if (r < 0) {
/* Set the return value to the error code */
unifi_error(priv, "unifi_write: (udi or sme)_send_signal() returns %d\n", r);
bytes_written = r;
break;
}
bufptr += r;
remaining -= r;
bytes_written += r;
}
kfree(buf);
return bytes_written;
} /* unifi_write() */
static const char* build_type_to_string(unsigned char build_type)
{
switch (build_type)
{
case UNIFI_BUILD_NME: return "NME";
case UNIFI_BUILD_WEXT: return "WEXT";
case UNIFI_BUILD_AP: return "AP";
}
return "unknown";
}
/*
* ----------------------------------------------------------------
* unifi_ioctl
*
* Ioctl handler for unifi driver.
*
* Arguments:
* inodep Pointer to inode structure.
* filp Pointer to file structure.
* cmd Ioctl cmd passed by user.
* arg Ioctl arg passed by user.
*
* Returns:
* 0 on success, -ve error code on error.
* ----------------------------------------------------------------
*/
static long
unifi_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
ul_client_t *pcli = (ul_client_t*)filp->private_data;
unifi_priv_t *priv;
struct net_device *dev;
int r = 0;
int int_param, i;
u8* buf;
CsrResult csrResult;
#if (defined CSR_SUPPORT_SME)
unifi_cfg_command_t cfg_cmd;
#if (defined CSR_SUPPORT_WEXT)
CsrWifiSmeCoexConfig coex_config;
unsigned char uchar_param;
unsigned char varbind[MAX_VARBIND_LENGTH];
int vblen;
#endif
#endif
unifi_putest_command_t putest_cmd;
priv = uf_find_instance(pcli->instance);
if (!priv) {
unifi_error(priv, "ioctl error: unknown instance=%d\n", pcli->instance);
r = -ENODEV;
goto out;
}
unifi_trace(priv, UDBG5, "unifi_ioctl: cmd=0x%X, arg=0x%lX\n", cmd, arg);
switch (cmd) {
case UNIFI_GET_UDI_ENABLE:
unifi_trace(priv, UDBG4, "UniFi Get UDI Enable\n");
down(&priv->udi_logging_mutex);
int_param = (priv->logging_client == NULL) ? 0 : 1;
up(&priv->udi_logging_mutex);
if (put_user(int_param, (int*)arg))
{
unifi_error(priv, "UNIFI_GET_UDI_ENABLE: Failed to copy to user\n");
r = -EFAULT;
goto out;
}
break;
case UNIFI_SET_UDI_ENABLE:
unifi_trace(priv, UDBG4, "UniFi Set UDI Enable\n");
if (get_user(int_param, (int*)arg))
{
unifi_error(priv, "UNIFI_SET_UDI_ENABLE: Failed to copy from user\n");
r = -EFAULT;
goto out;
}
#ifdef CSR_WIFI_HIP_DEBUG_OFFLINE
if (log_hip_signals) {
unifi_error(priv, "omnicli cannot be used when log_hip_signals is used\n");
r = -EFAULT;
goto out;
}
#endif
down(&priv->udi_logging_mutex);
if (int_param) {
pcli->event_hook = udi_log_event;
unifi_set_udi_hook(priv->card, logging_handler);
/* Log all signals by default */
for (i = 0; i < SIG_FILTER_SIZE; i++) {
pcli->signal_filter[i] = 0xFFFF;
}
priv->logging_client = pcli;
} else {
priv->logging_client = NULL;
pcli->event_hook = NULL;
}
up(&priv->udi_logging_mutex);
break;
case UNIFI_SET_MIB:
unifi_trace(priv, UDBG4, "UniFi Set MIB\n");
#if (defined CSR_SUPPORT_SME) && (defined CSR_SUPPORT_WEXT)
/* Read first 2 bytes and check length */
if (copy_from_user((void*)varbind, (void*)arg, 2)) {
unifi_error(priv,
"UNIFI_SET_MIB: Failed to copy in varbind header\n");
r = -EFAULT;
goto out;
}
vblen = varbind[1];
if ((vblen + 2) > MAX_VARBIND_LENGTH) {
unifi_error(priv,
"UNIFI_SET_MIB: Varbind too long (%d, limit %d)\n",
(vblen+2), MAX_VARBIND_LENGTH);
r = -EINVAL;
goto out;
}
/* Read rest of varbind */
if (copy_from_user((void*)(varbind+2), (void*)(arg+2), vblen)) {
unifi_error(priv, "UNIFI_SET_MIB: Failed to copy in varbind\n");
r = -EFAULT;
goto out;
}
/* send to SME */
vblen += 2;
r = sme_mgt_mib_set(priv, varbind, vblen);
if (r) {
goto out;
}
#else
unifi_notice(priv, "UNIFI_SET_MIB: Unsupported.\n");
#endif /* CSR_SUPPORT_WEXT */
break;
case UNIFI_GET_MIB:
unifi_trace(priv, UDBG4, "UniFi Get MIB\n");
#if (defined CSR_SUPPORT_SME) && (defined CSR_SUPPORT_WEXT)
/* Read first 2 bytes and check length */
if (copy_from_user((void*)varbind, (void*)arg, 2)) {
unifi_error(priv, "UNIFI_GET_MIB: Failed to copy in varbind header\n");
r = -EFAULT;
goto out;
}
vblen = varbind[1];
if ((vblen+2) > MAX_VARBIND_LENGTH) {
unifi_error(priv, "UNIFI_GET_MIB: Varbind too long (%d, limit %d)\n",
(vblen+2), MAX_VARBIND_LENGTH);
r = -EINVAL;
goto out;
}
/* Read rest of varbind */
if (copy_from_user((void*)(varbind+2), (void*)(arg+2), vblen)) {
unifi_error(priv, "UNIFI_GET_MIB: Failed to copy in varbind\n");
r = -EFAULT;
goto out;
}
vblen += 2;
r = sme_mgt_mib_get(priv, varbind, &vblen);
if (r) {
goto out;
}
/* copy out varbind */
if (vblen > MAX_VARBIND_LENGTH) {
unifi_error(priv,
"UNIFI_GET_MIB: Varbind result too long (%d, limit %d)\n",
vblen, MAX_VARBIND_LENGTH);
r = -EINVAL;
goto out;
}
if (copy_to_user((void*)arg, varbind, vblen)) {
r = -EFAULT;
goto out;
}
#else
unifi_notice(priv, "UNIFI_GET_MIB: Unsupported.\n");
#endif /* CSR_SUPPORT_WEXT */
break;
case UNIFI_CFG:
#if (defined CSR_SUPPORT_SME)
if (get_user(cfg_cmd, (unifi_cfg_command_t*)arg))
{
unifi_error(priv, "UNIFI_CFG: Failed to get the command\n");
r = -EFAULT;
goto out;
}
unifi_trace(priv, UDBG1, "UNIFI_CFG: Command is %d (t=%u) sz=%d\n",
cfg_cmd, jiffies_to_msecs(jiffies), sizeof(unifi_cfg_command_t));
switch (cfg_cmd) {
case UNIFI_CFG_POWER:
r = unifi_cfg_power(priv, (unsigned char*)arg);
break;
case UNIFI_CFG_POWERSAVE:
r = unifi_cfg_power_save(priv, (unsigned char*)arg);
break;
case UNIFI_CFG_POWERSUPPLY:
r = unifi_cfg_power_supply(priv, (unsigned char*)arg);
break;
case UNIFI_CFG_FILTER:
r = unifi_cfg_packet_filters(priv, (unsigned char*)arg);
break;
case UNIFI_CFG_GET:
r = unifi_cfg_get_info(priv, (unsigned char*)arg);
break;
case UNIFI_CFG_WMM_QOSINFO:
r = unifi_cfg_wmm_qos_info(priv, (unsigned char*)arg);
break;
case UNIFI_CFG_WMM_ADDTS:
r = unifi_cfg_wmm_addts(priv, (unsigned char*)arg);
break;
case UNIFI_CFG_WMM_DELTS:
r = unifi_cfg_wmm_delts(priv, (unsigned char*)arg);
break;
case UNIFI_CFG_STRICT_DRAFT_N:
r = unifi_cfg_strict_draft_n(priv, (unsigned char*)arg);
break;
case UNIFI_CFG_ENABLE_OKC:
r = unifi_cfg_enable_okc(priv, (unsigned char*)arg);
break;
#ifdef CSR_SUPPORT_SME
case UNIFI_CFG_CORE_DUMP:
CsrWifiRouterCtrlWifiOffIndSend(priv->CSR_WIFI_SME_IFACEQUEUE,0,CSR_WIFI_SME_CONTROL_INDICATION_ERROR);
unifi_trace(priv, UDBG2, "UNIFI_CFG_CORE_DUMP: sent wifi off indication\n");
break;
#endif
#ifdef CSR_SUPPORT_WEXT_AP
case UNIFI_CFG_SET_AP_CONFIG:
r= unifi_cfg_set_ap_config(priv,(unsigned char*)arg);
break;
#endif
default:
unifi_error(priv, "UNIFI_CFG: Unknown Command (%d)\n", cfg_cmd);
r = -EINVAL;
goto out;
}
#endif
break;
case UNIFI_PUTEST:
if (get_user(putest_cmd, (unifi_putest_command_t*)arg))
{
unifi_error(priv, "UNIFI_PUTEST: Failed to get the command\n");
r = -EFAULT;
goto out;
}
unifi_trace(priv, UDBG1, "UNIFI_PUTEST: Command is %s\n",
trace_putest_cmdid(putest_cmd));
switch (putest_cmd) {
case UNIFI_PUTEST_START:
r = unifi_putest_start(priv, (unsigned char*)arg);
break;
case UNIFI_PUTEST_STOP:
r = unifi_putest_stop(priv, (unsigned char*)arg);
break;
case UNIFI_PUTEST_SET_SDIO_CLOCK:
r = unifi_putest_set_sdio_clock(priv, (unsigned char*)arg);
break;
case UNIFI_PUTEST_CMD52_READ:
r = unifi_putest_cmd52_read(priv, (unsigned char*)arg);
break;
case UNIFI_PUTEST_CMD52_BLOCK_READ:
r = unifi_putest_cmd52_block_read(priv, (unsigned char*)arg);
break;
case UNIFI_PUTEST_CMD52_WRITE:
r = unifi_putest_cmd52_write(priv, (unsigned char*)arg);
break;
case UNIFI_PUTEST_DL_FW:
r = unifi_putest_dl_fw(priv, (unsigned char*)arg);
break;
case UNIFI_PUTEST_DL_FW_BUFF:
r = unifi_putest_dl_fw_buff(priv, (unsigned char*)arg);
break;
case UNIFI_PUTEST_COREDUMP_PREPARE:
r = unifi_putest_coredump_prepare(priv, (unsigned char*)arg);
break;
case UNIFI_PUTEST_GP_READ16:
r = unifi_putest_gp_read16(priv, (unsigned char*)arg);
break;
case UNIFI_PUTEST_GP_WRITE16:
r = unifi_putest_gp_write16(priv, (unsigned char*)arg);
break;
default:
unifi_error(priv, "UNIFI_PUTEST: Unknown Command (%d)\n", putest_cmd);
r = -EINVAL;
goto out;
}
break;
case UNIFI_BUILD_TYPE:
unifi_trace(priv, UDBG2, "UNIFI_BUILD_TYPE userspace=%s\n", build_type_to_string(*(unsigned char*)arg));
#ifndef CSR_SUPPORT_WEXT_AP
if (UNIFI_BUILD_AP == *(unsigned char*)arg)
{
unifi_error(priv, "Userspace has AP support, which is incompatible\n");
}
#endif
#ifndef CSR_SUPPORT_WEXT
if (UNIFI_BUILD_WEXT == *(unsigned char*)arg)
{
unifi_error(priv, "Userspace has WEXT support, which is incompatible\n");
}
#endif
break;
case UNIFI_INIT_HW:
unifi_trace(priv, UDBG2, "UNIFI_INIT_HW.\n");
priv->init_progress = UNIFI_INIT_NONE;
#if defined(CSR_SUPPORT_WEXT) || defined (CSR_NATIVE_LINUX)
/* At this point we are ready to start the SME. */
r = sme_mgt_wifi_on(priv);
if (r) {
goto out;
}
#endif
break;
case UNIFI_INIT_NETDEV:
{
/* get the proper interfaceTagId */
u16 interfaceTag=0;
netInterface_priv_t *interfacePriv = priv->interfacePriv[interfaceTag];
dev = priv->netdev[interfaceTag];
unifi_trace(priv, UDBG2, "UNIFI_INIT_NETDEV.\n");
if (copy_from_user((void*)dev->dev_addr, (void*)arg, 6)) {
r = -EFAULT;
goto out;
}
/* Attach the network device to the stack */
if (!interfacePriv->netdev_registered)
{
r = uf_register_netdev(priv,interfaceTag);
if (r) {
unifi_error(priv, "Failed to register the network device.\n");
goto out;
}
}
/* Apply scheduled interrupt mode, if requested by module param */
if (run_bh_once != -1) {
unifi_set_interrupt_mode(priv->card, (u32)run_bh_once);
}
priv->init_progress = UNIFI_INIT_COMPLETED;
/* Firmware initialisation is complete, so let the SDIO bus
* clock be raised when convienent to the core.
*/
unifi_request_max_sdio_clock(priv->card);
#ifdef CSR_SUPPORT_WEXT
/* Notify the Android wpa_supplicant that we are ready */
wext_send_started_event(priv);
#endif
unifi_info(priv, "UniFi ready\n");
#ifdef ANDROID_BUILD
/* Release the wakelock */
unifi_trace(priv, UDBG1, "netdev_init: release wake lock\n");
wake_unlock(&unifi_sdio_wake_lock);
#endif
#ifdef CSR_NATIVE_SOFTMAC /* For softmac dev, force-enable the network interface rather than wait for a connected-ind */
{
struct net_device *dev = priv->netdev[interfaceTag];
#ifdef CSR_SUPPORT_WEXT
interfacePriv->wait_netdev_change = TRUE;
#endif
netif_carrier_on(dev);
}
#endif
}
break;
case UNIFI_GET_INIT_STATUS:
unifi_trace(priv, UDBG2, "UNIFI_GET_INIT_STATUS.\n");
if (put_user(priv->init_progress, (int*)arg))
{
printk(KERN_ERR "UNIFI_GET_INIT_STATUS: Failed to copy to user\n");
r = -EFAULT;
goto out;
}
break;
case UNIFI_KICK:
unifi_trace(priv, UDBG4, "Kick UniFi\n");
unifi_sdio_interrupt_handler(priv->card);
break;
case UNIFI_SET_DEBUG:
unifi_debug = arg;
unifi_trace(priv, UDBG4, "unifi_debug set to %d\n", unifi_debug);
break;
case UNIFI_SET_TRACE:
/* no longer supported */
r = -EINVAL;
break;
case UNIFI_SET_UDI_LOG_MASK:
{
unifiio_filter_t udi_filter;
uint16_t *sig_ids_addr;
#define UF_MAX_SIG_IDS 128 /* Impose a sensible limit */
if (copy_from_user((void*)(&udi_filter), (void*)arg, sizeof(udi_filter))) {
r = -EFAULT;
goto out;
}
if ((udi_filter.action < UfSigFil_AllOn) ||
(udi_filter.action > UfSigFil_SelectOff))
{
printk(KERN_WARNING
"UNIFI_SET_UDI_LOG_MASK: Bad action value: %d\n",
udi_filter.action);
r = -EINVAL;
goto out;
}
/* No signal list for "All" actions */
if ((udi_filter.action == UfSigFil_AllOn) ||
(udi_filter.action == UfSigFil_AllOff))
{
udi_filter.num_sig_ids = 0;
}
if (udi_filter.num_sig_ids > UF_MAX_SIG_IDS) {
printk(KERN_WARNING
"UNIFI_SET_UDI_LOG_MASK: too many signal ids (%d, max %d)\n",
udi_filter.num_sig_ids, UF_MAX_SIG_IDS);
r = -EINVAL;
goto out;
}
/* Copy in signal id list if given */
if (udi_filter.num_sig_ids > 0) {
/* Preserve userspace address of sig_ids array */
sig_ids_addr = udi_filter.sig_ids;
/* Allocate kernel memory for sig_ids and copy to it */
udi_filter.sig_ids =
kmalloc(udi_filter.num_sig_ids * sizeof(uint16_t), GFP_KERNEL);
if (!udi_filter.sig_ids) {
r = -ENOMEM;
goto out;
}
if (copy_from_user((void*)udi_filter.sig_ids,
(void*)sig_ids_addr,
udi_filter.num_sig_ids * sizeof(uint16_t)))
{
kfree(udi_filter.sig_ids);
r = -EFAULT;
goto out;
}
}
udi_set_log_filter(pcli, &udi_filter);
if (udi_filter.num_sig_ids > 0) {
kfree(udi_filter.sig_ids);
}
}
break;
case UNIFI_SET_AMP_ENABLE:
unifi_trace(priv, UDBG4, "UniFi Set AMP Enable\n");
if (get_user(int_param, (int*)arg))
{
unifi_error(priv, "UNIFI_SET_AMP_ENABLE: Failed to copy from user\n");
r = -EFAULT;
goto out;
}
if (int_param) {
priv->amp_client = pcli;
} else {
priv->amp_client = NULL;
}
int_param = 0;
buf = (u8*)&int_param;
buf[0] = UNIFI_SOFT_COMMAND_Q_LENGTH - 1;
buf[1] = UNIFI_SOFT_TRAFFIC_Q_LENGTH - 1;
if (copy_to_user((void*)arg, &int_param, sizeof(int))) {
r = -EFAULT;
goto out;
}
break;
case UNIFI_SET_UDI_SNAP_MASK:
{
unifiio_snap_filter_t snap_filter;
if (copy_from_user((void*)(&snap_filter), (void*)arg, sizeof(snap_filter))) {
r = -EFAULT;
goto out;
}
if (pcli->snap_filter.count) {
pcli->snap_filter.count = 0;
kfree(pcli->snap_filter.protocols);
}
if (snap_filter.count == 0) {
break;
}
pcli->snap_filter.protocols = kmalloc(snap_filter.count * sizeof(u16), GFP_KERNEL);
if (!pcli->snap_filter.protocols) {
r = -ENOMEM;
goto out;
}
if (copy_from_user((void*)pcli->snap_filter.protocols,
(void*)snap_filter.protocols,
snap_filter.count * sizeof(u16)))
{
kfree(pcli->snap_filter.protocols);
r = -EFAULT;
goto out;
}
pcli->snap_filter.count = snap_filter.count;
}
break;
case UNIFI_SME_PRESENT:
{
u8 ind;
unifi_trace(priv, UDBG4, "UniFi SME Present IOCTL.\n");
if (copy_from_user((void*)(&int_param), (void*)arg, sizeof(int)))
{
printk(KERN_ERR "UNIFI_SME_PRESENT: Failed to copy from user\n");
r = -EFAULT;
goto out;
}
priv->sme_is_present = int_param;
if (priv->sme_is_present == 1) {
ind = CONFIG_SME_PRESENT;
} else {
ind = CONFIG_SME_NOT_PRESENT;
}
/* Send an indication to the helper app. */
ul_log_config_ind(priv, &ind, sizeof(u8));
}
break;
case UNIFI_CFG_PERIOD_TRAFFIC:
{
#if (defined CSR_SUPPORT_SME) && (defined CSR_SUPPORT_WEXT)
CsrWifiSmeCoexConfig coexConfig;
#endif /* CSR_SUPPORT_SME && CSR_SUPPORT_WEXT */
unifi_trace(priv, UDBG4, "UniFi Configure Periodic Traffic.\n");
#if (defined CSR_SUPPORT_SME) && (defined CSR_SUPPORT_WEXT)
if (copy_from_user((void*)(&uchar_param), (void*)arg, sizeof(unsigned char))) {
unifi_error(priv, "UNIFI_CFG_PERIOD_TRAFFIC: Failed to copy from user\n");
r = -EFAULT;
goto out;
}
if (uchar_param == 0) {
r = sme_mgt_coex_config_get(priv, &coexConfig);
if (r) {
unifi_error(priv, "UNIFI_CFG_PERIOD_TRAFFIC: Get unifi_CoexInfoValue failed.\n");
goto out;
}
if (copy_to_user((void*)(arg + 1),
(void*)&coexConfig,
sizeof(CsrWifiSmeCoexConfig))) {
r = -EFAULT;
goto out;
}
goto out;
}
if (copy_from_user((void*)(&coex_config), (void*)(arg + 1), sizeof(CsrWifiSmeCoexConfig)))
{
unifi_error(priv, "UNIFI_CFG_PERIOD_TRAFFIC: Failed to copy from user\n");
r = -EFAULT;
goto out;
}
coexConfig = coex_config;
r = sme_mgt_coex_config_set(priv, &coexConfig);
if (r) {
unifi_error(priv, "UNIFI_CFG_PERIOD_TRAFFIC: Set unifi_CoexInfoValue failed.\n");
goto out;
}
#endif /* CSR_SUPPORT_SME && CSR_SUPPORT_WEXT */
break;
}
case UNIFI_CFG_UAPSD_TRAFFIC:
unifi_trace(priv, UDBG4, "UniFi Configure U-APSD Mask.\n");
#if (defined CSR_SUPPORT_SME) && (defined CSR_SUPPORT_WEXT)
if (copy_from_user((void*)(&uchar_param), (void*)arg, sizeof(unsigned char))) {
unifi_error(priv, "UNIFI_CFG_UAPSD_TRAFFIC: Failed to copy from user\n");
r = -EFAULT;
goto out;
}
unifi_trace(priv, UDBG4, "New U-APSD Mask: 0x%x\n", uchar_param);
#endif /* CSR_SUPPORT_SME && CSR_SUPPORT_WEXT */
break;
#ifndef UNIFI_DISABLE_COREDUMP
case UNIFI_COREDUMP_GET_REG:
unifi_trace(priv, UDBG4, "Mini-coredump data request\n");
{
unifiio_coredump_req_t dump_req; /* Public OS layer structure */
unifi_coredump_req_t priv_req; /* Private HIP structure */
if (copy_from_user((void*)(&dump_req), (void*)arg, sizeof(dump_req))) {
r = -EFAULT;
goto out;
}
memset(&priv_req, 0, sizeof(priv_req));
priv_req.index = dump_req.index;
priv_req.offset = dump_req.offset;
/* Convert OS-layer's XAP memory space ID to HIP's ID in case they differ */
switch (dump_req.space) {
case UNIFIIO_COREDUMP_MAC_REG: priv_req.space = UNIFI_COREDUMP_MAC_REG; break;
case UNIFIIO_COREDUMP_PHY_REG: priv_req.space = UNIFI_COREDUMP_PHY_REG; break;
case UNIFIIO_COREDUMP_SH_DMEM: priv_req.space = UNIFI_COREDUMP_SH_DMEM; break;
case UNIFIIO_COREDUMP_MAC_DMEM: priv_req.space = UNIFI_COREDUMP_MAC_DMEM; break;
case UNIFIIO_COREDUMP_PHY_DMEM: priv_req.space = UNIFI_COREDUMP_PHY_DMEM; break;
case UNIFIIO_COREDUMP_TRIGGER_MAGIC: priv_req.space = UNIFI_COREDUMP_TRIGGER_MAGIC; break;
default:
r = -EINVAL;
goto out;
}
if (priv_req.space == UNIFI_COREDUMP_TRIGGER_MAGIC) {
/* Force a coredump grab now */
unifi_trace(priv, UDBG2, "UNIFI_COREDUMP_GET_REG: Force capture\n");
csrResult = unifi_coredump_capture(priv->card, &priv_req);
r = CsrHipResultToStatus(csrResult);
unifi_trace(priv, UDBG5, "UNIFI_COREDUMP_GET_REG: status %d\n", r);
} else {
/* Retrieve the appropriate register entry */
csrResult = unifi_coredump_get_value(priv->card, &priv_req);
r = CsrHipResultToStatus(csrResult);
if (r) {
unifi_trace(priv, UDBG5, "UNIFI_COREDUMP_GET_REG: Status %d\n", r);
goto out;
}
/* Update the OS-layer structure with values returned in the private */
dump_req.value = priv_req.value;
dump_req.timestamp = priv_req.timestamp;
dump_req.requestor = priv_req.requestor;
dump_req.serial = priv_req.serial;
dump_req.chip_ver = priv_req.chip_ver;
dump_req.fw_ver = priv_req.fw_ver;
dump_req.drv_build = 0;
unifi_trace(priv, UDBG6,
"Dump: %d (seq %d): V:0x%04x (%d) @0x%02x:%04x = 0x%04x\n",
dump_req.index, dump_req.serial,
dump_req.chip_ver, dump_req.drv_build,
dump_req.space, dump_req.offset, dump_req.value);
}
if (copy_to_user((void*)arg, (void*)&dump_req, sizeof(dump_req))) {
r = -EFAULT;
goto out;
}
}
break;
#endif
default:
r = -EINVAL;
}
out:
return (long)r;
} /* unifi_ioctl() */
static unsigned int
unifi_poll(struct file *filp, poll_table *wait)
{
ul_client_t *pcli = (ul_client_t*)filp->private_data;
unsigned int mask = 0;
int ready;
ready = !list_empty(&pcli->udi_log);
poll_wait(filp, &pcli->udi_wq, wait);
if (ready) {
mask |= POLLIN | POLLRDNORM; /* readable */
}
return mask;
} /* unifi_poll() */
/*
* ---------------------------------------------------------------------------
* udi_set_log_filter
*
* Configure the bit mask that determines which signal primitives are
* passed to the logging process.
*
* Arguments:
* pcli Pointer to the client to configure.
* udi_filter Pointer to a unifiio_filter_t containing instructions.
*
* Returns:
* None.
*
* Notes:
* SigGetFilterPos() returns a 32-bit value that contains an index and a
* mask for accessing a signal_filter array. The top 16 bits specify an
* index into a signal_filter, the bottom 16 bits specify a mask to
* apply.
* ---------------------------------------------------------------------------
*/
static void
udi_set_log_filter(ul_client_t *pcli, unifiio_filter_t *udi_filter)
{
u32 filter_pos;
int i;
if (udi_filter->action == UfSigFil_AllOn)
{
for (i = 0; i < SIG_FILTER_SIZE; i++) {
pcli->signal_filter[i] = 0xFFFF;
}
}
else if (udi_filter->action == UfSigFil_AllOff)
{
for (i = 0; i < SIG_FILTER_SIZE; i++) {
pcli->signal_filter[i] = 0;
}
}
else if (udi_filter->action == UfSigFil_SelectOn)
{
for (i = 0; i < udi_filter->num_sig_ids; i++) {
filter_pos = SigGetFilterPos(udi_filter->sig_ids[i]);
if (filter_pos == 0xFFFFFFFF)
{
printk(KERN_WARNING
"Unrecognised signal id (0x%X) specifed in logging filter\n",
udi_filter->sig_ids[i]);
} else {
pcli->signal_filter[filter_pos >> 16] |= (filter_pos & 0xFFFF);
}
}
}
else if (udi_filter->action == UfSigFil_SelectOff)
{
for (i = 0; i < udi_filter->num_sig_ids; i++) {
filter_pos = SigGetFilterPos(udi_filter->sig_ids[i]);
if (filter_pos == 0xFFFFFFFF)
{
printk(KERN_WARNING
"Unrecognised signal id (0x%X) specifed in logging filter\n",
udi_filter->sig_ids[i]);
} else {
pcli->signal_filter[filter_pos >> 16] &= ~(filter_pos & 0xFFFF);
}
}
}
} /* udi_set_log_filter() */
/*
* ---------------------------------------------------------------------------
* udi_log_event
*
* Callback function to be registered as the UDI hook callback.
* Copies the signal content into a new udi_log_t struct and adds
* it to the read queue for this UDI client.
*
* Arguments:
* pcli A pointer to the client instance.
* signal Pointer to the received signal.
* signal_len Size of the signal structure in bytes.
* bulkdata Pointers to any associated bulk data.
* dir Direction of the signal. Zero means from host,
* non-zero means to host.
*
* Returns:
* None.
* ---------------------------------------------------------------------------
*/
void
udi_log_event(ul_client_t *pcli,
const u8 *signal, int signal_len,
const bulk_data_param_t *bulkdata,
int dir)
{
udi_log_t *logptr;
u8 *p;
int i;
int total_len;
udi_msg_t *msgptr;
u32 filter_pos;
#ifdef OMNICLI_LINUX_EXTRA_LOG
static volatile unsigned int printk_cpu = UINT_MAX;
unsigned long long t;
unsigned long nanosec_rem;
unsigned long n_1000;
#endif
/* Just a sanity check */
if ((signal == NULL) || (signal_len <= 0)) {
return;
}
#ifdef CSR_WIFI_HIP_DEBUG_OFFLINE
/* When HIP offline signal logging is enabled, omnicli cannot run */
if (log_hip_signals)
{
/* Add timestamp */
if (log_hip_signals & UNIFI_LOG_HIP_SIGNALS_FILTER_TIMESTAMP)
{
int timestamp = jiffies_to_msecs(jiffies);
unifi_debug_log_to_buf("T:");
unifi_debug_log_to_buf("%04X%04X ", *(((u16*)&timestamp) + 1),
*(u16*)&timestamp);
}
/* Add signal */
unifi_debug_log_to_buf("S%s:%04X R:%04X D:%04X ",
dir ? "T" : "F",
*(u16*)signal,
*(u16*)(signal + 2),
*(u16*)(signal + 4));
unifi_debug_hex_to_buf(signal + 6, signal_len - 6);
/* Add bulk data (assume 1 bulk data per signal) */
if ((log_hip_signals & UNIFI_LOG_HIP_SIGNALS_FILTER_BULKDATA) &&
(bulkdata->d[0].data_length > 0))
{
unifi_debug_log_to_buf("\nD:");
unifi_debug_hex_to_buf(bulkdata->d[0].os_data_ptr, bulkdata->d[0].data_length);
}
unifi_debug_log_to_buf("\n");
return;
}
#endif
#ifdef CSR_NATIVE_LINUX
uf_native_process_udi_signal(pcli, signal, signal_len, bulkdata, dir);
#endif
/*
* Apply the logging filter - only report signals that have their
* bit set in the filter mask.
*/
filter_pos = SigGetFilterPos(GET_SIGNAL_ID(signal));
if ((filter_pos != 0xFFFFFFFF) &&
((pcli->signal_filter[filter_pos >> 16] & (filter_pos & 0xFFFF)) == 0))
{
/* Signal is not wanted by client */
return;
}
/* Calculate the buffer we need to store signal plus bulk data */
total_len = signal_len;
for (i = 0; i < UNIFI_MAX_DATA_REFERENCES; i++) {
total_len += bulkdata->d[i].data_length;
}
/* Allocate log structure plus actual signal. */
logptr = kmalloc(sizeof(udi_log_t) + total_len, GFP_KERNEL);
if (logptr == NULL) {
printk(KERN_ERR
"Failed to allocate %lu bytes for a UDI log record\n",
(long unsigned int)(sizeof(udi_log_t) + total_len));
return;
}
/* Fill in udi_log struct */
INIT_LIST_HEAD(&logptr->q);
msgptr = &logptr->msg;
msgptr->length = sizeof(udi_msg_t) + total_len;
#ifdef OMNICLI_LINUX_EXTRA_LOG
t = cpu_clock(printk_cpu);
nanosec_rem = do_div(t, 1000000000);
n_1000 = nanosec_rem/1000;
msgptr->timestamp = (t <<10 ) | ((unsigned long)(n_1000 >> 10) & 0x3ff);
#else
msgptr->timestamp = jiffies_to_msecs(jiffies);
#endif
msgptr->direction = dir;
msgptr->signal_length = signal_len;
/* Copy signal and bulk data to the log */
p = (u8 *)(msgptr + 1);
memcpy(p, signal, signal_len);
p += signal_len;
/* Append any bulk data */
for (i = 0; i < UNIFI_MAX_DATA_REFERENCES; i++) {
int len = bulkdata->d[i].data_length;
/*
* Len here might not be the same as the length in the bulk data slot.
* The slot length will always be even, but len could be odd.
*/
if (len > 0) {
if (bulkdata->d[i].os_data_ptr) {
memcpy(p, bulkdata->d[i].os_data_ptr, len);
} else {
memset(p, 0, len);
}
p += len;
}
}
/* Add to tail of log queue */
if (down_interruptible(&pcli->udi_sem)) {
printk(KERN_WARNING "udi_log_event_q: Failed to get udi sem\n");
kfree(logptr);
return;
}
list_add_tail(&logptr->q, &pcli->udi_log);
up(&pcli->udi_sem);
/* Wake any waiting user process */
wake_up_interruptible(&pcli->udi_wq);
} /* udi_log_event() */
#ifdef CSR_SME_USERSPACE
int
uf_sme_queue_message(unifi_priv_t *priv, u8 *buffer, int length)
{
udi_log_t *logptr;
udi_msg_t *msgptr;
u8 *p;
/* Just a sanity check */
if ((buffer == NULL) || (length <= 0)) {
return -EINVAL;
}
/* Allocate log structure plus actual signal. */
logptr = kmalloc(sizeof(udi_log_t) + length, GFP_ATOMIC);
if (logptr == NULL) {
unifi_error(priv, "Failed to allocate %d bytes for an SME message\n",
sizeof(udi_log_t) + length);
kfree(buffer);
return -ENOMEM;
}
/* Fill in udi_log struct */
INIT_LIST_HEAD(&logptr->q);
msgptr = &logptr->msg;
msgptr->length = sizeof(udi_msg_t) + length;
msgptr->signal_length = length;
/* Copy signal and bulk data to the log */
p = (u8 *)(msgptr + 1);
memcpy(p, buffer, length);
/* Add to tail of log queue */
down(&udi_mutex);
if (priv->sme_cli == NULL) {
kfree(logptr);
kfree(buffer);
up(&udi_mutex);
unifi_info(priv, "Message for the SME dropped, SME has gone away\n");
return 0;
}
down(&priv->sme_cli->udi_sem);
list_add_tail(&logptr->q, &priv->sme_cli->udi_log);
up(&priv->sme_cli->udi_sem);
/* Wake any waiting user process */
wake_up_interruptible(&priv->sme_cli->udi_wq);
up(&udi_mutex);
/* It is our responsibility to free the buffer allocated in build_packed_*() */
kfree(buffer);
return 0;
} /* uf_sme_queue_message() */
#endif
/*
****************************************************************************
*
* Driver instantiation
*
****************************************************************************
*/
static const struct file_operations unifi_fops = {
.owner = THIS_MODULE,
.open = unifi_open,
.release = unifi_release,
.read = unifi_read,
.write = unifi_write,
.unlocked_ioctl = unifi_ioctl,
.poll = unifi_poll,
};
static dev_t unifi_first_devno;
static struct class *unifi_class;
int uf_create_device_nodes(unifi_priv_t *priv, int bus_id)
{
dev_t devno;
int r;
cdev_init(&priv->unifi_cdev, &unifi_fops);
/* cdev_init() should set the cdev owner, but it does not */
priv->unifi_cdev.owner = THIS_MODULE;
devno = MKDEV(MAJOR(unifi_first_devno),
MINOR(unifi_first_devno) + (bus_id * 2));
r = cdev_add(&priv->unifi_cdev, devno, 1);
if (r) {
return r;
}
#ifdef SDIO_EXPORTS_STRUCT_DEVICE
if (!device_create(unifi_class, priv->unifi_device,
devno, priv, "unifi%d", bus_id)) {
#else
priv->unifi_device = device_create(unifi_class, NULL,
devno, priv, "unifi%d", bus_id);
if (priv->unifi_device == NULL) {
#endif /* SDIO_EXPORTS_STRUCT_DEVICE */
cdev_del(&priv->unifi_cdev);
return -EINVAL;
}
cdev_init(&priv->unifiudi_cdev, &unifi_fops);
/* cdev_init() should set the cdev owner, but it does not */
priv->unifiudi_cdev.owner = THIS_MODULE;
devno = MKDEV(MAJOR(unifi_first_devno),
MINOR(unifi_first_devno) + (bus_id * 2) + 1);
r = cdev_add(&priv->unifiudi_cdev, devno, 1);
if (r) {
device_destroy(unifi_class, priv->unifi_cdev.dev);
cdev_del(&priv->unifi_cdev);
return r;
}
if (!device_create(unifi_class,
#ifdef SDIO_EXPORTS_STRUCT_DEVICE
priv->unifi_device,
#else
NULL,
#endif /* SDIO_EXPORTS_STRUCT_DEVICE */
devno, priv, "unifiudi%d", bus_id)) {
device_destroy(unifi_class, priv->unifi_cdev.dev);
cdev_del(&priv->unifiudi_cdev);
cdev_del(&priv->unifi_cdev);
return -EINVAL;
}
return 0;
}
void uf_destroy_device_nodes(unifi_priv_t *priv)
{
device_destroy(unifi_class, priv->unifiudi_cdev.dev);
device_destroy(unifi_class, priv->unifi_cdev.dev);
cdev_del(&priv->unifiudi_cdev);
cdev_del(&priv->unifi_cdev);
}
/*
* ----------------------------------------------------------------
* uf_create_debug_device
*
* Allocates device numbers for unifi character device nodes
* and creates a unifi class in sysfs
*
* Arguments:
* fops Pointer to the char device operations structure.
*
* Returns:
* 0 on success, -ve error code on error.
* ----------------------------------------------------------------
*/
static int
uf_create_debug_device(const struct file_operations *fops)
{
int ret;
/* Allocate two device numbers for each device. */
ret = alloc_chrdev_region(&unifi_first_devno, 0, MAX_UNIFI_DEVS*2, UNIFI_NAME);
if (ret) {
unifi_error(NULL, "Failed to add alloc dev numbers: %d\n", ret);
return ret;
}
/* Create a UniFi class */
unifi_class = class_create(THIS_MODULE, UNIFI_NAME);
if (IS_ERR(unifi_class)) {
unifi_error(NULL, "Failed to create UniFi class\n");
/* Release device numbers */
unregister_chrdev_region(unifi_first_devno, MAX_UNIFI_DEVS*2);
unifi_first_devno = 0;
return -EINVAL;
}
return 0;
} /* uf_create_debug_device() */
/*
* ----------------------------------------------------------------
* uf_remove_debug_device
*
* Destroys the unifi class and releases the allocated
* device numbers for unifi character device nodes.
*
* Arguments:
*
* Returns:
* ----------------------------------------------------------------
*/
static void
uf_remove_debug_device(void)
{
/* Destroy the UniFi class */
class_destroy(unifi_class);
/* Release device numbers */
unregister_chrdev_region(unifi_first_devno, MAX_UNIFI_DEVS*2);
unifi_first_devno = 0;
} /* uf_remove_debug_device() */
/*
* ---------------------------------------------------------------------------
*
* Module loading.
*
* ---------------------------------------------------------------------------
*/
int __init
unifi_load(void)
{
int r;
printk("UniFi SDIO Driver: %s %s %s\n",
CSR_WIFI_VERSION,
__DATE__, __TIME__);
#ifdef CSR_SME_USERSPACE
#ifdef CSR_SUPPORT_WEXT
printk("CSR SME with WEXT support\n");
#else
printk("CSR SME no WEXT support\n");
#endif /* CSR_SUPPORT_WEXT */
#endif /* CSR_SME_USERSPACE */
#ifdef CSR_NATIVE_LINUX
#ifdef CSR_SUPPORT_WEXT
#error WEXT unsupported in the native driver
#endif
printk("CSR native no WEXT support\n");
#endif
#ifdef CSR_WIFI_SPLIT_PATCH
printk("Split patch support\n");
#endif
printk("Kernel %d.%d.%d\n",
((LINUX_VERSION_CODE) >> 16) & 0xff,
((LINUX_VERSION_CODE) >> 8) & 0xff,
(LINUX_VERSION_CODE) & 0xff);
/*
* Instantiate the /dev/unifi* device nodes.
* We must do this before registering with the SDIO driver because it
* will immediately call the "insert" callback if the card is
* already present.
*/
r = uf_create_debug_device(&unifi_fops);
if (r) {
return r;
}
/* Now register with the SDIO driver */
r = uf_sdio_load();
if (r) {
uf_remove_debug_device();
return r;
}
if (sdio_block_size > -1) {
unifi_info(NULL, "sdio_block_size %d\n", sdio_block_size);
}
if (sdio_byte_mode) {
unifi_info(NULL, "sdio_byte_mode\n");
}
if (disable_power_control) {
unifi_info(NULL, "disable_power_control\n");
}
if (disable_hw_reset) {
unifi_info(NULL, "disable_hw_reset\n");
}
if (enable_wol) {
unifi_info(NULL, "enable_wol %d\n", enable_wol);
}
if (run_bh_once != -1) {
unifi_info(NULL, "run_bh_once %d\n", run_bh_once);
}
return 0;
} /* unifi_load() */
void __exit
unifi_unload(void)
{
/* The SDIO remove hook will call unifi_disconnect(). */
uf_sdio_unload();
uf_remove_debug_device();
} /* unifi_unload() */
module_init(unifi_load);
module_exit(unifi_unload);
MODULE_DESCRIPTION("UniFi Device driver");
MODULE_AUTHOR("Cambridge Silicon Radio Ltd.");
MODULE_LICENSE("GPL and additional rights");