| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * ISP1362 HCD (Host Controller Driver) for USB. |
| * |
| * Copyright (C) 2005 Lothar Wassmann <LW@KARO-electronics.de> |
| * |
| * Derived from the SL811 HCD, rewritten for ISP116x. |
| * Copyright (C) 2005 Olav Kongas <ok@artecdesign.ee> |
| * |
| * Portions: |
| * Copyright (C) 2004 Psion Teklogix (for NetBook PRO) |
| * Copyright (C) 2004 David Brownell |
| */ |
| |
| /* |
| * The ISP1362 chip requires a large delay (300ns and 462ns) between |
| * accesses to the address and data register. |
| * The following timing options exist: |
| * |
| * 1. Configure your memory controller to add such delays if it can (the best) |
| * 2. Implement platform-specific delay function possibly |
| * combined with configuring the memory controller; see |
| * include/linux/usb_isp1362.h for more info. |
| * 3. Use ndelay (easiest, poorest). |
| * |
| * Use the corresponding macros USE_PLATFORM_DELAY and USE_NDELAY in the |
| * platform specific section of isp1362.h to select the appropriate variant. |
| * |
| * Also note that according to the Philips "ISP1362 Errata" document |
| * Rev 1.00 from 27 May data corruption may occur when the #WR signal |
| * is reasserted (even with #CS deasserted) within 132ns after a |
| * write cycle to any controller register. If the hardware doesn't |
| * implement the recommended fix (gating the #WR with #CS) software |
| * must ensure that no further write cycle (not necessarily to the chip!) |
| * is issued by the CPU within this interval. |
| |
| * For PXA25x this can be ensured by using VLIO with the maximum |
| * recovery time (MSCx = 0x7f8c) with a memory clock of 99.53 MHz. |
| */ |
| |
| #undef ISP1362_DEBUG |
| |
| /* |
| * The PXA255 UDC apparently doesn't handle GET_STATUS, GET_CONFIG and |
| * GET_INTERFACE requests correctly when the SETUP and DATA stages of the |
| * requests are carried out in separate frames. This will delay any SETUP |
| * packets until the start of the next frame so that this situation is |
| * unlikely to occur (and makes usbtest happy running with a PXA255 target |
| * device). |
| */ |
| #undef BUGGY_PXA2XX_UDC_USBTEST |
| |
| #undef PTD_TRACE |
| #undef URB_TRACE |
| #undef VERBOSE |
| #undef REGISTERS |
| |
| /* This enables a memory test on the ISP1362 chip memory to make sure the |
| * chip access timing is correct. |
| */ |
| #undef CHIP_BUFFER_TEST |
| |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/kernel.h> |
| #include <linux/delay.h> |
| #include <linux/ioport.h> |
| #include <linux/sched.h> |
| #include <linux/slab.h> |
| #include <linux/errno.h> |
| #include <linux/list.h> |
| #include <linux/interrupt.h> |
| #include <linux/usb.h> |
| #include <linux/usb/isp1362.h> |
| #include <linux/usb/hcd.h> |
| #include <linux/platform_device.h> |
| #include <linux/pm.h> |
| #include <linux/io.h> |
| #include <linux/bitmap.h> |
| #include <linux/prefetch.h> |
| #include <linux/debugfs.h> |
| #include <linux/seq_file.h> |
| |
| #include <asm/irq.h> |
| #include <asm/byteorder.h> |
| #include <asm/unaligned.h> |
| |
| static int dbg_level; |
| #ifdef ISP1362_DEBUG |
| module_param(dbg_level, int, 0644); |
| #else |
| module_param(dbg_level, int, 0); |
| #endif |
| |
| #include "../core/usb.h" |
| #include "isp1362.h" |
| |
| |
| #define DRIVER_VERSION "2005-04-04" |
| #define DRIVER_DESC "ISP1362 USB Host Controller Driver" |
| |
| MODULE_DESCRIPTION(DRIVER_DESC); |
| MODULE_LICENSE("GPL"); |
| |
| static const char hcd_name[] = "isp1362-hcd"; |
| |
| static void isp1362_hc_stop(struct usb_hcd *hcd); |
| static int isp1362_hc_start(struct usb_hcd *hcd); |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* |
| * When called from the interrupthandler only isp1362_hcd->irqenb is modified, |
| * since the interrupt handler will write isp1362_hcd->irqenb to HCuPINT upon |
| * completion. |
| * We don't need a 'disable' counterpart, since interrupts will be disabled |
| * only by the interrupt handler. |
| */ |
| static inline void isp1362_enable_int(struct isp1362_hcd *isp1362_hcd, u16 mask) |
| { |
| if ((isp1362_hcd->irqenb | mask) == isp1362_hcd->irqenb) |
| return; |
| if (mask & ~isp1362_hcd->irqenb) |
| isp1362_write_reg16(isp1362_hcd, HCuPINT, mask & ~isp1362_hcd->irqenb); |
| isp1362_hcd->irqenb |= mask; |
| if (isp1362_hcd->irq_active) |
| return; |
| isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static inline struct isp1362_ep_queue *get_ptd_queue(struct isp1362_hcd *isp1362_hcd, |
| u16 offset) |
| { |
| struct isp1362_ep_queue *epq = NULL; |
| |
| if (offset < isp1362_hcd->istl_queue[1].buf_start) |
| epq = &isp1362_hcd->istl_queue[0]; |
| else if (offset < isp1362_hcd->intl_queue.buf_start) |
| epq = &isp1362_hcd->istl_queue[1]; |
| else if (offset < isp1362_hcd->atl_queue.buf_start) |
| epq = &isp1362_hcd->intl_queue; |
| else if (offset < isp1362_hcd->atl_queue.buf_start + |
| isp1362_hcd->atl_queue.buf_size) |
| epq = &isp1362_hcd->atl_queue; |
| |
| if (epq) |
| DBG(1, "%s: PTD $%04x is on %s queue\n", __func__, offset, epq->name); |
| else |
| pr_warn("%s: invalid PTD $%04x\n", __func__, offset); |
| |
| return epq; |
| } |
| |
| static inline int get_ptd_offset(struct isp1362_ep_queue *epq, u8 index) |
| { |
| int offset; |
| |
| if (index * epq->blk_size > epq->buf_size) { |
| pr_warn("%s: Bad %s index %d(%d)\n", |
| __func__, epq->name, index, |
| epq->buf_size / epq->blk_size); |
| return -EINVAL; |
| } |
| offset = epq->buf_start + index * epq->blk_size; |
| DBG(3, "%s: %s PTD[%02x] # %04x\n", __func__, epq->name, index, offset); |
| |
| return offset; |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static inline u16 max_transfer_size(struct isp1362_ep_queue *epq, size_t size, |
| int mps) |
| { |
| u16 xfer_size = min_t(size_t, MAX_XFER_SIZE, size); |
| |
| xfer_size = min_t(size_t, xfer_size, epq->buf_avail * epq->blk_size - PTD_HEADER_SIZE); |
| if (xfer_size < size && xfer_size % mps) |
| xfer_size -= xfer_size % mps; |
| |
| return xfer_size; |
| } |
| |
| static int claim_ptd_buffers(struct isp1362_ep_queue *epq, |
| struct isp1362_ep *ep, u16 len) |
| { |
| int ptd_offset = -EINVAL; |
| int num_ptds = ((len + PTD_HEADER_SIZE - 1) / epq->blk_size) + 1; |
| int found; |
| |
| BUG_ON(len > epq->buf_size); |
| |
| if (!epq->buf_avail) |
| return -ENOMEM; |
| |
| if (ep->num_ptds) |
| pr_err("%s: %s len %d/%d num_ptds %d buf_map %08lx skip_map %08lx\n", __func__, |
| epq->name, len, epq->blk_size, num_ptds, epq->buf_map, epq->skip_map); |
| BUG_ON(ep->num_ptds != 0); |
| |
| found = bitmap_find_next_zero_area(&epq->buf_map, epq->buf_count, 0, |
| num_ptds, 0); |
| if (found >= epq->buf_count) |
| return -EOVERFLOW; |
| |
| DBG(1, "%s: Found %d PTDs[%d] for %d/%d byte\n", __func__, |
| num_ptds, found, len, (int)(epq->blk_size - PTD_HEADER_SIZE)); |
| ptd_offset = get_ptd_offset(epq, found); |
| WARN_ON(ptd_offset < 0); |
| ep->ptd_offset = ptd_offset; |
| ep->num_ptds += num_ptds; |
| epq->buf_avail -= num_ptds; |
| BUG_ON(epq->buf_avail > epq->buf_count); |
| ep->ptd_index = found; |
| bitmap_set(&epq->buf_map, found, num_ptds); |
| DBG(1, "%s: Done %s PTD[%d] $%04x, avail %d count %d claimed %d %08lx:%08lx\n", |
| __func__, epq->name, ep->ptd_index, ep->ptd_offset, |
| epq->buf_avail, epq->buf_count, num_ptds, epq->buf_map, epq->skip_map); |
| |
| return found; |
| } |
| |
| static inline void release_ptd_buffers(struct isp1362_ep_queue *epq, struct isp1362_ep *ep) |
| { |
| int last = ep->ptd_index + ep->num_ptds; |
| |
| if (last > epq->buf_count) |
| pr_err("%s: ep %p req %d len %d %s PTD[%d] $%04x num_ptds %d buf_count %d buf_avail %d buf_map %08lx skip_map %08lx\n", |
| __func__, ep, ep->num_req, ep->length, epq->name, ep->ptd_index, |
| ep->ptd_offset, ep->num_ptds, epq->buf_count, epq->buf_avail, |
| epq->buf_map, epq->skip_map); |
| BUG_ON(last > epq->buf_count); |
| |
| bitmap_clear(&epq->buf_map, ep->ptd_index, ep->num_ptds); |
| bitmap_set(&epq->skip_map, ep->ptd_index, ep->num_ptds); |
| epq->buf_avail += ep->num_ptds; |
| epq->ptd_count--; |
| |
| BUG_ON(epq->buf_avail > epq->buf_count); |
| BUG_ON(epq->ptd_count > epq->buf_count); |
| |
| DBG(1, "%s: Done %s PTDs $%04x released %d avail %d count %d\n", |
| __func__, epq->name, |
| ep->ptd_offset, ep->num_ptds, epq->buf_avail, epq->buf_count); |
| DBG(1, "%s: buf_map %08lx skip_map %08lx\n", __func__, |
| epq->buf_map, epq->skip_map); |
| |
| ep->num_ptds = 0; |
| ep->ptd_offset = -EINVAL; |
| ep->ptd_index = -EINVAL; |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* |
| Set up PTD's. |
| */ |
| static void prepare_ptd(struct isp1362_hcd *isp1362_hcd, struct urb *urb, |
| struct isp1362_ep *ep, struct isp1362_ep_queue *epq, |
| u16 fno) |
| { |
| struct ptd *ptd; |
| int toggle; |
| int dir; |
| u16 len; |
| size_t buf_len = urb->transfer_buffer_length - urb->actual_length; |
| |
| DBG(3, "%s: %s ep %p\n", __func__, epq->name, ep); |
| |
| ptd = &ep->ptd; |
| |
| ep->data = (unsigned char *)urb->transfer_buffer + urb->actual_length; |
| |
| switch (ep->nextpid) { |
| case USB_PID_IN: |
| toggle = usb_gettoggle(urb->dev, ep->epnum, 0); |
| dir = PTD_DIR_IN; |
| if (usb_pipecontrol(urb->pipe)) { |
| len = min_t(size_t, ep->maxpacket, buf_len); |
| } else if (usb_pipeisoc(urb->pipe)) { |
| len = min_t(size_t, urb->iso_frame_desc[fno].length, MAX_XFER_SIZE); |
| ep->data = urb->transfer_buffer + urb->iso_frame_desc[fno].offset; |
| } else |
| len = max_transfer_size(epq, buf_len, ep->maxpacket); |
| DBG(1, "%s: IN len %d/%d/%d from URB\n", __func__, len, ep->maxpacket, |
| (int)buf_len); |
| break; |
| case USB_PID_OUT: |
| toggle = usb_gettoggle(urb->dev, ep->epnum, 1); |
| dir = PTD_DIR_OUT; |
| if (usb_pipecontrol(urb->pipe)) |
| len = min_t(size_t, ep->maxpacket, buf_len); |
| else if (usb_pipeisoc(urb->pipe)) |
| len = min_t(size_t, urb->iso_frame_desc[0].length, MAX_XFER_SIZE); |
| else |
| len = max_transfer_size(epq, buf_len, ep->maxpacket); |
| if (len == 0) |
| pr_info("%s: Sending ZERO packet: %d\n", __func__, |
| urb->transfer_flags & URB_ZERO_PACKET); |
| DBG(1, "%s: OUT len %d/%d/%d from URB\n", __func__, len, ep->maxpacket, |
| (int)buf_len); |
| break; |
| case USB_PID_SETUP: |
| toggle = 0; |
| dir = PTD_DIR_SETUP; |
| len = sizeof(struct usb_ctrlrequest); |
| DBG(1, "%s: SETUP len %d\n", __func__, len); |
| ep->data = urb->setup_packet; |
| break; |
| case USB_PID_ACK: |
| toggle = 1; |
| len = 0; |
| dir = (urb->transfer_buffer_length && usb_pipein(urb->pipe)) ? |
| PTD_DIR_OUT : PTD_DIR_IN; |
| DBG(1, "%s: ACK len %d\n", __func__, len); |
| break; |
| default: |
| toggle = dir = len = 0; |
| pr_err("%s@%d: ep->nextpid %02x\n", __func__, __LINE__, ep->nextpid); |
| BUG_ON(1); |
| } |
| |
| ep->length = len; |
| if (!len) |
| ep->data = NULL; |
| |
| ptd->count = PTD_CC_MSK | PTD_ACTIVE_MSK | PTD_TOGGLE(toggle); |
| ptd->mps = PTD_MPS(ep->maxpacket) | PTD_SPD(urb->dev->speed == USB_SPEED_LOW) | |
| PTD_EP(ep->epnum); |
| ptd->len = PTD_LEN(len) | PTD_DIR(dir); |
| ptd->faddr = PTD_FA(usb_pipedevice(urb->pipe)); |
| |
| if (usb_pipeint(urb->pipe)) { |
| ptd->faddr |= PTD_SF_INT(ep->branch); |
| ptd->faddr |= PTD_PR(ep->interval ? __ffs(ep->interval) : 0); |
| } |
| if (usb_pipeisoc(urb->pipe)) |
| ptd->faddr |= PTD_SF_ISO(fno); |
| |
| DBG(1, "%s: Finished\n", __func__); |
| } |
| |
| static void isp1362_write_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep, |
| struct isp1362_ep_queue *epq) |
| { |
| struct ptd *ptd = &ep->ptd; |
| int len = PTD_GET_DIR(ptd) == PTD_DIR_IN ? 0 : ep->length; |
| |
| prefetch(ptd); |
| isp1362_write_buffer(isp1362_hcd, ptd, ep->ptd_offset, PTD_HEADER_SIZE); |
| if (len) |
| isp1362_write_buffer(isp1362_hcd, ep->data, |
| ep->ptd_offset + PTD_HEADER_SIZE, len); |
| |
| dump_ptd(ptd); |
| dump_ptd_out_data(ptd, ep->data); |
| } |
| |
| static void isp1362_read_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep, |
| struct isp1362_ep_queue *epq) |
| { |
| struct ptd *ptd = &ep->ptd; |
| int act_len; |
| |
| WARN_ON(list_empty(&ep->active)); |
| BUG_ON(ep->ptd_offset < 0); |
| |
| list_del_init(&ep->active); |
| DBG(1, "%s: ep %p removed from active list %p\n", __func__, ep, &epq->active); |
| |
| prefetchw(ptd); |
| isp1362_read_buffer(isp1362_hcd, ptd, ep->ptd_offset, PTD_HEADER_SIZE); |
| dump_ptd(ptd); |
| act_len = PTD_GET_COUNT(ptd); |
| if (PTD_GET_DIR(ptd) != PTD_DIR_IN || act_len == 0) |
| return; |
| if (act_len > ep->length) |
| pr_err("%s: ep %p PTD $%04x act_len %d ep->length %d\n", __func__, ep, |
| ep->ptd_offset, act_len, ep->length); |
| BUG_ON(act_len > ep->length); |
| /* Only transfer the amount of data that has actually been overwritten |
| * in the chip buffer. We don't want any data that doesn't belong to the |
| * transfer to leak out of the chip to the callers transfer buffer! |
| */ |
| prefetchw(ep->data); |
| isp1362_read_buffer(isp1362_hcd, ep->data, |
| ep->ptd_offset + PTD_HEADER_SIZE, act_len); |
| dump_ptd_in_data(ptd, ep->data); |
| } |
| |
| /* |
| * INT PTDs will stay in the chip until data is available. |
| * This function will remove a PTD from the chip when the URB is dequeued. |
| * Must be called with the spinlock held and IRQs disabled |
| */ |
| static void remove_ptd(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep) |
| |
| { |
| int index; |
| struct isp1362_ep_queue *epq; |
| |
| DBG(1, "%s: ep %p PTD[%d] $%04x\n", __func__, ep, ep->ptd_index, ep->ptd_offset); |
| BUG_ON(ep->ptd_offset < 0); |
| |
| epq = get_ptd_queue(isp1362_hcd, ep->ptd_offset); |
| BUG_ON(!epq); |
| |
| /* put ep in remove_list for cleanup */ |
| WARN_ON(!list_empty(&ep->remove_list)); |
| list_add_tail(&ep->remove_list, &isp1362_hcd->remove_list); |
| /* let SOF interrupt handle the cleanup */ |
| isp1362_enable_int(isp1362_hcd, HCuPINT_SOF); |
| |
| index = ep->ptd_index; |
| if (index < 0) |
| /* ISO queues don't have SKIP registers */ |
| return; |
| |
| DBG(1, "%s: Disabling PTD[%02x] $%04x %08lx|%08x\n", __func__, |
| index, ep->ptd_offset, epq->skip_map, 1 << index); |
| |
| /* prevent further processing of PTD (will be effective after next SOF) */ |
| epq->skip_map |= 1 << index; |
| if (epq == &isp1362_hcd->atl_queue) { |
| DBG(2, "%s: ATLSKIP = %08x -> %08lx\n", __func__, |
| isp1362_read_reg32(isp1362_hcd, HCATLSKIP), epq->skip_map); |
| isp1362_write_reg32(isp1362_hcd, HCATLSKIP, epq->skip_map); |
| if (~epq->skip_map == 0) |
| isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); |
| } else if (epq == &isp1362_hcd->intl_queue) { |
| DBG(2, "%s: INTLSKIP = %08x -> %08lx\n", __func__, |
| isp1362_read_reg32(isp1362_hcd, HCINTLSKIP), epq->skip_map); |
| isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, epq->skip_map); |
| if (~epq->skip_map == 0) |
| isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); |
| } |
| } |
| |
| /* |
| Take done or failed requests out of schedule. Give back |
| processed urbs. |
| */ |
| static void finish_request(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep, |
| struct urb *urb, int status) |
| __releases(isp1362_hcd->lock) |
| __acquires(isp1362_hcd->lock) |
| { |
| urb->hcpriv = NULL; |
| ep->error_count = 0; |
| |
| if (usb_pipecontrol(urb->pipe)) |
| ep->nextpid = USB_PID_SETUP; |
| |
| URB_DBG("%s: req %d FA %d ep%d%s %s: len %d/%d %s stat %d\n", __func__, |
| ep->num_req, usb_pipedevice(urb->pipe), |
| usb_pipeendpoint(urb->pipe), |
| !usb_pipein(urb->pipe) ? "out" : "in", |
| usb_pipecontrol(urb->pipe) ? "ctrl" : |
| usb_pipeint(urb->pipe) ? "int" : |
| usb_pipebulk(urb->pipe) ? "bulk" : |
| "iso", |
| urb->actual_length, urb->transfer_buffer_length, |
| !(urb->transfer_flags & URB_SHORT_NOT_OK) ? |
| "short_ok" : "", urb->status); |
| |
| |
| usb_hcd_unlink_urb_from_ep(isp1362_hcd_to_hcd(isp1362_hcd), urb); |
| spin_unlock(&isp1362_hcd->lock); |
| usb_hcd_giveback_urb(isp1362_hcd_to_hcd(isp1362_hcd), urb, status); |
| spin_lock(&isp1362_hcd->lock); |
| |
| /* take idle endpoints out of the schedule right away */ |
| if (!list_empty(&ep->hep->urb_list)) |
| return; |
| |
| /* async deschedule */ |
| if (!list_empty(&ep->schedule)) { |
| list_del_init(&ep->schedule); |
| return; |
| } |
| |
| |
| if (ep->interval) { |
| /* periodic deschedule */ |
| DBG(1, "deschedule qh%d/%p branch %d load %d bandwidth %d -> %d\n", ep->interval, |
| ep, ep->branch, ep->load, |
| isp1362_hcd->load[ep->branch], |
| isp1362_hcd->load[ep->branch] - ep->load); |
| isp1362_hcd->load[ep->branch] -= ep->load; |
| ep->branch = PERIODIC_SIZE; |
| } |
| } |
| |
| /* |
| * Analyze transfer results, handle partial transfers and errors |
| */ |
| static void postproc_ep(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep *ep) |
| { |
| struct urb *urb = get_urb(ep); |
| struct usb_device *udev; |
| struct ptd *ptd; |
| int short_ok; |
| u16 len; |
| int urbstat = -EINPROGRESS; |
| u8 cc; |
| |
| DBG(2, "%s: ep %p req %d\n", __func__, ep, ep->num_req); |
| |
| udev = urb->dev; |
| ptd = &ep->ptd; |
| cc = PTD_GET_CC(ptd); |
| if (cc == PTD_NOTACCESSED) { |
| pr_err("%s: req %d PTD %p Untouched by ISP1362\n", __func__, |
| ep->num_req, ptd); |
| cc = PTD_DEVNOTRESP; |
| } |
| |
| short_ok = !(urb->transfer_flags & URB_SHORT_NOT_OK); |
| len = urb->transfer_buffer_length - urb->actual_length; |
| |
| /* Data underrun is special. For allowed underrun |
| we clear the error and continue as normal. For |
| forbidden underrun we finish the DATA stage |
| immediately while for control transfer, |
| we do a STATUS stage. |
| */ |
| if (cc == PTD_DATAUNDERRUN) { |
| if (short_ok) { |
| DBG(1, "%s: req %d Allowed data underrun short_%sok %d/%d/%d byte\n", |
| __func__, ep->num_req, short_ok ? "" : "not_", |
| PTD_GET_COUNT(ptd), ep->maxpacket, len); |
| cc = PTD_CC_NOERROR; |
| urbstat = 0; |
| } else { |
| DBG(1, "%s: req %d Data Underrun %s nextpid %02x short_%sok %d/%d/%d byte\n", |
| __func__, ep->num_req, |
| usb_pipein(urb->pipe) ? "IN" : "OUT", ep->nextpid, |
| short_ok ? "" : "not_", |
| PTD_GET_COUNT(ptd), ep->maxpacket, len); |
| /* save the data underrun error code for later and |
| * proceed with the status stage |
| */ |
| urb->actual_length += PTD_GET_COUNT(ptd); |
| if (usb_pipecontrol(urb->pipe)) { |
| ep->nextpid = USB_PID_ACK; |
| BUG_ON(urb->actual_length > urb->transfer_buffer_length); |
| |
| if (urb->status == -EINPROGRESS) |
| urb->status = cc_to_error[PTD_DATAUNDERRUN]; |
| } else { |
| usb_settoggle(udev, ep->epnum, ep->nextpid == USB_PID_OUT, |
| PTD_GET_TOGGLE(ptd)); |
| urbstat = cc_to_error[PTD_DATAUNDERRUN]; |
| } |
| goto out; |
| } |
| } |
| |
| if (cc != PTD_CC_NOERROR) { |
| if (++ep->error_count >= 3 || cc == PTD_CC_STALL || cc == PTD_DATAOVERRUN) { |
| urbstat = cc_to_error[cc]; |
| DBG(1, "%s: req %d nextpid %02x, status %d, error %d, error_count %d\n", |
| __func__, ep->num_req, ep->nextpid, urbstat, cc, |
| ep->error_count); |
| } |
| goto out; |
| } |
| |
| switch (ep->nextpid) { |
| case USB_PID_OUT: |
| if (PTD_GET_COUNT(ptd) != ep->length) |
| pr_err("%s: count=%d len=%d\n", __func__, |
| PTD_GET_COUNT(ptd), ep->length); |
| BUG_ON(PTD_GET_COUNT(ptd) != ep->length); |
| urb->actual_length += ep->length; |
| BUG_ON(urb->actual_length > urb->transfer_buffer_length); |
| usb_settoggle(udev, ep->epnum, 1, PTD_GET_TOGGLE(ptd)); |
| if (urb->actual_length == urb->transfer_buffer_length) { |
| DBG(3, "%s: req %d xfer complete %d/%d status %d -> 0\n", __func__, |
| ep->num_req, len, ep->maxpacket, urbstat); |
| if (usb_pipecontrol(urb->pipe)) { |
| DBG(3, "%s: req %d %s Wait for ACK\n", __func__, |
| ep->num_req, |
| usb_pipein(urb->pipe) ? "IN" : "OUT"); |
| ep->nextpid = USB_PID_ACK; |
| } else { |
| if (len % ep->maxpacket || |
| !(urb->transfer_flags & URB_ZERO_PACKET)) { |
| urbstat = 0; |
| DBG(3, "%s: req %d URB %s status %d count %d/%d/%d\n", |
| __func__, ep->num_req, usb_pipein(urb->pipe) ? "IN" : "OUT", |
| urbstat, len, ep->maxpacket, urb->actual_length); |
| } |
| } |
| } |
| break; |
| case USB_PID_IN: |
| len = PTD_GET_COUNT(ptd); |
| BUG_ON(len > ep->length); |
| urb->actual_length += len; |
| BUG_ON(urb->actual_length > urb->transfer_buffer_length); |
| usb_settoggle(udev, ep->epnum, 0, PTD_GET_TOGGLE(ptd)); |
| /* if transfer completed or (allowed) data underrun */ |
| if ((urb->transfer_buffer_length == urb->actual_length) || |
| len % ep->maxpacket) { |
| DBG(3, "%s: req %d xfer complete %d/%d status %d -> 0\n", __func__, |
| ep->num_req, len, ep->maxpacket, urbstat); |
| if (usb_pipecontrol(urb->pipe)) { |
| DBG(3, "%s: req %d %s Wait for ACK\n", __func__, |
| ep->num_req, |
| usb_pipein(urb->pipe) ? "IN" : "OUT"); |
| ep->nextpid = USB_PID_ACK; |
| } else { |
| urbstat = 0; |
| DBG(3, "%s: req %d URB %s status %d count %d/%d/%d\n", |
| __func__, ep->num_req, usb_pipein(urb->pipe) ? "IN" : "OUT", |
| urbstat, len, ep->maxpacket, urb->actual_length); |
| } |
| } |
| break; |
| case USB_PID_SETUP: |
| if (urb->transfer_buffer_length == urb->actual_length) { |
| ep->nextpid = USB_PID_ACK; |
| } else if (usb_pipeout(urb->pipe)) { |
| usb_settoggle(udev, 0, 1, 1); |
| ep->nextpid = USB_PID_OUT; |
| } else { |
| usb_settoggle(udev, 0, 0, 1); |
| ep->nextpid = USB_PID_IN; |
| } |
| break; |
| case USB_PID_ACK: |
| DBG(3, "%s: req %d got ACK %d -> 0\n", __func__, ep->num_req, |
| urbstat); |
| WARN_ON(urbstat != -EINPROGRESS); |
| urbstat = 0; |
| ep->nextpid = 0; |
| break; |
| default: |
| BUG_ON(1); |
| } |
| |
| out: |
| if (urbstat != -EINPROGRESS) { |
| DBG(2, "%s: Finishing ep %p req %d urb %p status %d\n", __func__, |
| ep, ep->num_req, urb, urbstat); |
| finish_request(isp1362_hcd, ep, urb, urbstat); |
| } |
| } |
| |
| static void finish_unlinks(struct isp1362_hcd *isp1362_hcd) |
| { |
| struct isp1362_ep *ep; |
| struct isp1362_ep *tmp; |
| |
| list_for_each_entry_safe(ep, tmp, &isp1362_hcd->remove_list, remove_list) { |
| struct isp1362_ep_queue *epq = |
| get_ptd_queue(isp1362_hcd, ep->ptd_offset); |
| int index = ep->ptd_index; |
| |
| BUG_ON(epq == NULL); |
| if (index >= 0) { |
| DBG(1, "%s: remove PTD[%d] $%04x\n", __func__, index, ep->ptd_offset); |
| BUG_ON(ep->num_ptds == 0); |
| release_ptd_buffers(epq, ep); |
| } |
| if (!list_empty(&ep->hep->urb_list)) { |
| struct urb *urb = get_urb(ep); |
| |
| DBG(1, "%s: Finishing req %d ep %p from remove_list\n", __func__, |
| ep->num_req, ep); |
| finish_request(isp1362_hcd, ep, urb, -ESHUTDOWN); |
| } |
| WARN_ON(list_empty(&ep->active)); |
| if (!list_empty(&ep->active)) { |
| list_del_init(&ep->active); |
| DBG(1, "%s: ep %p removed from active list\n", __func__, ep); |
| } |
| list_del_init(&ep->remove_list); |
| DBG(1, "%s: ep %p removed from remove_list\n", __func__, ep); |
| } |
| DBG(1, "%s: Done\n", __func__); |
| } |
| |
| static inline void enable_atl_transfers(struct isp1362_hcd *isp1362_hcd, int count) |
| { |
| if (count > 0) { |
| if (count < isp1362_hcd->atl_queue.ptd_count) |
| isp1362_write_reg16(isp1362_hcd, HCATLDTC, count); |
| isp1362_enable_int(isp1362_hcd, HCuPINT_ATL); |
| isp1362_write_reg32(isp1362_hcd, HCATLSKIP, isp1362_hcd->atl_queue.skip_map); |
| isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); |
| } else |
| isp1362_enable_int(isp1362_hcd, HCuPINT_SOF); |
| } |
| |
| static inline void enable_intl_transfers(struct isp1362_hcd *isp1362_hcd) |
| { |
| isp1362_enable_int(isp1362_hcd, HCuPINT_INTL); |
| isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); |
| isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, isp1362_hcd->intl_queue.skip_map); |
| } |
| |
| static inline void enable_istl_transfers(struct isp1362_hcd *isp1362_hcd, int flip) |
| { |
| isp1362_enable_int(isp1362_hcd, flip ? HCuPINT_ISTL1 : HCuPINT_ISTL0); |
| isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, flip ? |
| HCBUFSTAT_ISTL1_FULL : HCBUFSTAT_ISTL0_FULL); |
| } |
| |
| static int submit_req(struct isp1362_hcd *isp1362_hcd, struct urb *urb, |
| struct isp1362_ep *ep, struct isp1362_ep_queue *epq) |
| { |
| int index; |
| |
| prepare_ptd(isp1362_hcd, urb, ep, epq, 0); |
| index = claim_ptd_buffers(epq, ep, ep->length); |
| if (index == -ENOMEM) { |
| DBG(1, "%s: req %d No free %s PTD available: %d, %08lx:%08lx\n", __func__, |
| ep->num_req, epq->name, ep->num_ptds, epq->buf_map, epq->skip_map); |
| return index; |
| } else if (index == -EOVERFLOW) { |
| DBG(1, "%s: req %d Not enough space for %d byte %s PTD %d %08lx:%08lx\n", |
| __func__, ep->num_req, ep->length, epq->name, ep->num_ptds, |
| epq->buf_map, epq->skip_map); |
| return index; |
| } else |
| BUG_ON(index < 0); |
| list_add_tail(&ep->active, &epq->active); |
| DBG(1, "%s: ep %p req %d len %d added to active list %p\n", __func__, |
| ep, ep->num_req, ep->length, &epq->active); |
| DBG(1, "%s: Submitting %s PTD $%04x for ep %p req %d\n", __func__, epq->name, |
| ep->ptd_offset, ep, ep->num_req); |
| isp1362_write_ptd(isp1362_hcd, ep, epq); |
| __clear_bit(ep->ptd_index, &epq->skip_map); |
| |
| return 0; |
| } |
| |
| static void start_atl_transfers(struct isp1362_hcd *isp1362_hcd) |
| { |
| int ptd_count = 0; |
| struct isp1362_ep_queue *epq = &isp1362_hcd->atl_queue; |
| struct isp1362_ep *ep; |
| int defer = 0; |
| |
| if (atomic_read(&epq->finishing)) { |
| DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); |
| return; |
| } |
| |
| list_for_each_entry(ep, &isp1362_hcd->async, schedule) { |
| struct urb *urb = get_urb(ep); |
| int ret; |
| |
| if (!list_empty(&ep->active)) { |
| DBG(2, "%s: Skipping active %s ep %p\n", __func__, epq->name, ep); |
| continue; |
| } |
| |
| DBG(1, "%s: Processing %s ep %p req %d\n", __func__, epq->name, |
| ep, ep->num_req); |
| |
| ret = submit_req(isp1362_hcd, urb, ep, epq); |
| if (ret == -ENOMEM) { |
| defer = 1; |
| break; |
| } else if (ret == -EOVERFLOW) { |
| defer = 1; |
| continue; |
| } |
| #ifdef BUGGY_PXA2XX_UDC_USBTEST |
| defer = ep->nextpid == USB_PID_SETUP; |
| #endif |
| ptd_count++; |
| } |
| |
| /* Avoid starving of endpoints */ |
| if (isp1362_hcd->async.next != isp1362_hcd->async.prev) { |
| DBG(2, "%s: Cycling ASYNC schedule %d\n", __func__, ptd_count); |
| list_move(&isp1362_hcd->async, isp1362_hcd->async.next); |
| } |
| if (ptd_count || defer) |
| enable_atl_transfers(isp1362_hcd, defer ? 0 : ptd_count); |
| |
| epq->ptd_count += ptd_count; |
| if (epq->ptd_count > epq->stat_maxptds) { |
| epq->stat_maxptds = epq->ptd_count; |
| DBG(0, "%s: max_ptds: %d\n", __func__, epq->stat_maxptds); |
| } |
| } |
| |
| static void start_intl_transfers(struct isp1362_hcd *isp1362_hcd) |
| { |
| int ptd_count = 0; |
| struct isp1362_ep_queue *epq = &isp1362_hcd->intl_queue; |
| struct isp1362_ep *ep; |
| |
| if (atomic_read(&epq->finishing)) { |
| DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); |
| return; |
| } |
| |
| list_for_each_entry(ep, &isp1362_hcd->periodic, schedule) { |
| struct urb *urb = get_urb(ep); |
| int ret; |
| |
| if (!list_empty(&ep->active)) { |
| DBG(1, "%s: Skipping active %s ep %p\n", __func__, |
| epq->name, ep); |
| continue; |
| } |
| |
| DBG(1, "%s: Processing %s ep %p req %d\n", __func__, |
| epq->name, ep, ep->num_req); |
| ret = submit_req(isp1362_hcd, urb, ep, epq); |
| if (ret == -ENOMEM) |
| break; |
| else if (ret == -EOVERFLOW) |
| continue; |
| ptd_count++; |
| } |
| |
| if (ptd_count) { |
| static int last_count; |
| |
| if (ptd_count != last_count) { |
| DBG(0, "%s: ptd_count: %d\n", __func__, ptd_count); |
| last_count = ptd_count; |
| } |
| enable_intl_transfers(isp1362_hcd); |
| } |
| |
| epq->ptd_count += ptd_count; |
| if (epq->ptd_count > epq->stat_maxptds) |
| epq->stat_maxptds = epq->ptd_count; |
| } |
| |
| static inline int next_ptd(struct isp1362_ep_queue *epq, struct isp1362_ep *ep) |
| { |
| u16 ptd_offset = ep->ptd_offset; |
| int num_ptds = (ep->length + PTD_HEADER_SIZE + (epq->blk_size - 1)) / epq->blk_size; |
| |
| DBG(2, "%s: PTD offset $%04x + %04x => %d * %04x -> $%04x\n", __func__, ptd_offset, |
| ep->length, num_ptds, epq->blk_size, ptd_offset + num_ptds * epq->blk_size); |
| |
| ptd_offset += num_ptds * epq->blk_size; |
| if (ptd_offset < epq->buf_start + epq->buf_size) |
| return ptd_offset; |
| else |
| return -ENOMEM; |
| } |
| |
| static void start_iso_transfers(struct isp1362_hcd *isp1362_hcd) |
| { |
| int ptd_count = 0; |
| int flip = isp1362_hcd->istl_flip; |
| struct isp1362_ep_queue *epq; |
| int ptd_offset; |
| struct isp1362_ep *ep; |
| struct isp1362_ep *tmp; |
| u16 fno = isp1362_read_reg32(isp1362_hcd, HCFMNUM); |
| |
| fill2: |
| epq = &isp1362_hcd->istl_queue[flip]; |
| if (atomic_read(&epq->finishing)) { |
| DBG(1, "%s: finish_transfers is active for %s\n", __func__, epq->name); |
| return; |
| } |
| |
| if (!list_empty(&epq->active)) |
| return; |
| |
| ptd_offset = epq->buf_start; |
| list_for_each_entry_safe(ep, tmp, &isp1362_hcd->isoc, schedule) { |
| struct urb *urb = get_urb(ep); |
| s16 diff = fno - (u16)urb->start_frame; |
| |
| DBG(1, "%s: Processing %s ep %p\n", __func__, epq->name, ep); |
| |
| if (diff > urb->number_of_packets) { |
| /* time frame for this URB has elapsed */ |
| finish_request(isp1362_hcd, ep, urb, -EOVERFLOW); |
| continue; |
| } else if (diff < -1) { |
| /* URB is not due in this frame or the next one. |
| * Comparing with '-1' instead of '0' accounts for double |
| * buffering in the ISP1362 which enables us to queue the PTD |
| * one frame ahead of time |
| */ |
| } else if (diff == -1) { |
| /* submit PTD's that are due in the next frame */ |
| prepare_ptd(isp1362_hcd, urb, ep, epq, fno); |
| if (ptd_offset + PTD_HEADER_SIZE + ep->length > |
| epq->buf_start + epq->buf_size) { |
| pr_err("%s: Not enough ISO buffer space for %d byte PTD\n", |
| __func__, ep->length); |
| continue; |
| } |
| ep->ptd_offset = ptd_offset; |
| list_add_tail(&ep->active, &epq->active); |
| |
| ptd_offset = next_ptd(epq, ep); |
| if (ptd_offset < 0) { |
| pr_warn("%s: req %d No more %s PTD buffers available\n", |
| __func__, ep->num_req, epq->name); |
| break; |
| } |
| } |
| } |
| list_for_each_entry(ep, &epq->active, active) { |
| if (epq->active.next == &ep->active) |
| ep->ptd.mps |= PTD_LAST_MSK; |
| isp1362_write_ptd(isp1362_hcd, ep, epq); |
| ptd_count++; |
| } |
| |
| if (ptd_count) |
| enable_istl_transfers(isp1362_hcd, flip); |
| |
| epq->ptd_count += ptd_count; |
| if (epq->ptd_count > epq->stat_maxptds) |
| epq->stat_maxptds = epq->ptd_count; |
| |
| /* check, whether the second ISTL buffer may also be filled */ |
| if (!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & |
| (flip ? HCBUFSTAT_ISTL0_FULL : HCBUFSTAT_ISTL1_FULL))) { |
| fno++; |
| ptd_count = 0; |
| flip = 1 - flip; |
| goto fill2; |
| } |
| } |
| |
| static void finish_transfers(struct isp1362_hcd *isp1362_hcd, unsigned long done_map, |
| struct isp1362_ep_queue *epq) |
| { |
| struct isp1362_ep *ep; |
| struct isp1362_ep *tmp; |
| |
| if (list_empty(&epq->active)) { |
| DBG(1, "%s: Nothing to do for %s queue\n", __func__, epq->name); |
| return; |
| } |
| |
| DBG(1, "%s: Finishing %s transfers %08lx\n", __func__, epq->name, done_map); |
| |
| atomic_inc(&epq->finishing); |
| list_for_each_entry_safe(ep, tmp, &epq->active, active) { |
| int index = ep->ptd_index; |
| |
| DBG(1, "%s: Checking %s PTD[%02x] $%04x\n", __func__, epq->name, |
| index, ep->ptd_offset); |
| |
| BUG_ON(index < 0); |
| if (__test_and_clear_bit(index, &done_map)) { |
| isp1362_read_ptd(isp1362_hcd, ep, epq); |
| epq->free_ptd = index; |
| BUG_ON(ep->num_ptds == 0); |
| release_ptd_buffers(epq, ep); |
| |
| DBG(1, "%s: ep %p req %d removed from active list\n", __func__, |
| ep, ep->num_req); |
| if (!list_empty(&ep->remove_list)) { |
| list_del_init(&ep->remove_list); |
| DBG(1, "%s: ep %p removed from remove list\n", __func__, ep); |
| } |
| DBG(1, "%s: Postprocessing %s ep %p req %d\n", __func__, epq->name, |
| ep, ep->num_req); |
| postproc_ep(isp1362_hcd, ep); |
| } |
| if (!done_map) |
| break; |
| } |
| if (done_map) |
| pr_warn("%s: done_map not clear: %08lx:%08lx\n", |
| __func__, done_map, epq->skip_map); |
| atomic_dec(&epq->finishing); |
| } |
| |
| static void finish_iso_transfers(struct isp1362_hcd *isp1362_hcd, struct isp1362_ep_queue *epq) |
| { |
| struct isp1362_ep *ep; |
| struct isp1362_ep *tmp; |
| |
| if (list_empty(&epq->active)) { |
| DBG(1, "%s: Nothing to do for %s queue\n", __func__, epq->name); |
| return; |
| } |
| |
| DBG(1, "%s: Finishing %s transfers\n", __func__, epq->name); |
| |
| atomic_inc(&epq->finishing); |
| list_for_each_entry_safe(ep, tmp, &epq->active, active) { |
| DBG(1, "%s: Checking PTD $%04x\n", __func__, ep->ptd_offset); |
| |
| isp1362_read_ptd(isp1362_hcd, ep, epq); |
| DBG(1, "%s: Postprocessing %s ep %p\n", __func__, epq->name, ep); |
| postproc_ep(isp1362_hcd, ep); |
| } |
| WARN_ON(epq->blk_size != 0); |
| atomic_dec(&epq->finishing); |
| } |
| |
| static irqreturn_t isp1362_irq(struct usb_hcd *hcd) |
| { |
| int handled = 0; |
| struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| u16 irqstat; |
| u16 svc_mask; |
| |
| spin_lock(&isp1362_hcd->lock); |
| |
| BUG_ON(isp1362_hcd->irq_active++); |
| |
| isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); |
| |
| irqstat = isp1362_read_reg16(isp1362_hcd, HCuPINT); |
| DBG(3, "%s: got IRQ %04x:%04x\n", __func__, irqstat, isp1362_hcd->irqenb); |
| |
| /* only handle interrupts that are currently enabled */ |
| irqstat &= isp1362_hcd->irqenb; |
| isp1362_write_reg16(isp1362_hcd, HCuPINT, irqstat); |
| svc_mask = irqstat; |
| |
| if (irqstat & HCuPINT_SOF) { |
| isp1362_hcd->irqenb &= ~HCuPINT_SOF; |
| isp1362_hcd->irq_stat[ISP1362_INT_SOF]++; |
| handled = 1; |
| svc_mask &= ~HCuPINT_SOF; |
| DBG(3, "%s: SOF\n", __func__); |
| isp1362_hcd->fmindex = isp1362_read_reg32(isp1362_hcd, HCFMNUM); |
| if (!list_empty(&isp1362_hcd->remove_list)) |
| finish_unlinks(isp1362_hcd); |
| if (!list_empty(&isp1362_hcd->async) && !(irqstat & HCuPINT_ATL)) { |
| if (list_empty(&isp1362_hcd->atl_queue.active)) { |
| start_atl_transfers(isp1362_hcd); |
| } else { |
| isp1362_enable_int(isp1362_hcd, HCuPINT_ATL); |
| isp1362_write_reg32(isp1362_hcd, HCATLSKIP, |
| isp1362_hcd->atl_queue.skip_map); |
| isp1362_set_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); |
| } |
| } |
| } |
| |
| if (irqstat & HCuPINT_ISTL0) { |
| isp1362_hcd->irq_stat[ISP1362_INT_ISTL0]++; |
| handled = 1; |
| svc_mask &= ~HCuPINT_ISTL0; |
| isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ISTL0_FULL); |
| DBG(1, "%s: ISTL0\n", __func__); |
| WARN_ON((int)!!isp1362_hcd->istl_flip); |
| WARN_ON(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & |
| HCBUFSTAT_ISTL0_ACTIVE); |
| WARN_ON(!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & |
| HCBUFSTAT_ISTL0_DONE)); |
| isp1362_hcd->irqenb &= ~HCuPINT_ISTL0; |
| } |
| |
| if (irqstat & HCuPINT_ISTL1) { |
| isp1362_hcd->irq_stat[ISP1362_INT_ISTL1]++; |
| handled = 1; |
| svc_mask &= ~HCuPINT_ISTL1; |
| isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ISTL1_FULL); |
| DBG(1, "%s: ISTL1\n", __func__); |
| WARN_ON(!(int)isp1362_hcd->istl_flip); |
| WARN_ON(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & |
| HCBUFSTAT_ISTL1_ACTIVE); |
| WARN_ON(!(isp1362_read_reg16(isp1362_hcd, HCBUFSTAT) & |
| HCBUFSTAT_ISTL1_DONE)); |
| isp1362_hcd->irqenb &= ~HCuPINT_ISTL1; |
| } |
| |
| if (irqstat & (HCuPINT_ISTL0 | HCuPINT_ISTL1)) { |
| WARN_ON((irqstat & (HCuPINT_ISTL0 | HCuPINT_ISTL1)) == |
| (HCuPINT_ISTL0 | HCuPINT_ISTL1)); |
| finish_iso_transfers(isp1362_hcd, |
| &isp1362_hcd->istl_queue[isp1362_hcd->istl_flip]); |
| start_iso_transfers(isp1362_hcd); |
| isp1362_hcd->istl_flip = 1 - isp1362_hcd->istl_flip; |
| } |
| |
| if (irqstat & HCuPINT_INTL) { |
| u32 done_map = isp1362_read_reg32(isp1362_hcd, HCINTLDONE); |
| u32 skip_map = isp1362_read_reg32(isp1362_hcd, HCINTLSKIP); |
| isp1362_hcd->irq_stat[ISP1362_INT_INTL]++; |
| |
| DBG(2, "%s: INTL\n", __func__); |
| |
| svc_mask &= ~HCuPINT_INTL; |
| |
| isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, skip_map | done_map); |
| if (~(done_map | skip_map) == 0) |
| /* All PTDs are finished, disable INTL processing entirely */ |
| isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_INTL_ACTIVE); |
| |
| handled = 1; |
| WARN_ON(!done_map); |
| if (done_map) { |
| DBG(3, "%s: INTL done_map %08x\n", __func__, done_map); |
| finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->intl_queue); |
| start_intl_transfers(isp1362_hcd); |
| } |
| } |
| |
| if (irqstat & HCuPINT_ATL) { |
| u32 done_map = isp1362_read_reg32(isp1362_hcd, HCATLDONE); |
| u32 skip_map = isp1362_read_reg32(isp1362_hcd, HCATLSKIP); |
| isp1362_hcd->irq_stat[ISP1362_INT_ATL]++; |
| |
| DBG(2, "%s: ATL\n", __func__); |
| |
| svc_mask &= ~HCuPINT_ATL; |
| |
| isp1362_write_reg32(isp1362_hcd, HCATLSKIP, skip_map | done_map); |
| if (~(done_map | skip_map) == 0) |
| isp1362_clr_mask16(isp1362_hcd, HCBUFSTAT, HCBUFSTAT_ATL_ACTIVE); |
| if (done_map) { |
| DBG(3, "%s: ATL done_map %08x\n", __func__, done_map); |
| finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->atl_queue); |
| start_atl_transfers(isp1362_hcd); |
| } |
| handled = 1; |
| } |
| |
| if (irqstat & HCuPINT_OPR) { |
| u32 intstat = isp1362_read_reg32(isp1362_hcd, HCINTSTAT); |
| isp1362_hcd->irq_stat[ISP1362_INT_OPR]++; |
| |
| svc_mask &= ~HCuPINT_OPR; |
| DBG(2, "%s: OPR %08x:%08x\n", __func__, intstat, isp1362_hcd->intenb); |
| intstat &= isp1362_hcd->intenb; |
| if (intstat & OHCI_INTR_UE) { |
| pr_err("Unrecoverable error\n"); |
| /* FIXME: do here reset or cleanup or whatever */ |
| } |
| if (intstat & OHCI_INTR_RHSC) { |
| isp1362_hcd->rhstatus = isp1362_read_reg32(isp1362_hcd, HCRHSTATUS); |
| isp1362_hcd->rhport[0] = isp1362_read_reg32(isp1362_hcd, HCRHPORT1); |
| isp1362_hcd->rhport[1] = isp1362_read_reg32(isp1362_hcd, HCRHPORT2); |
| } |
| if (intstat & OHCI_INTR_RD) { |
| pr_info("%s: RESUME DETECTED\n", __func__); |
| isp1362_show_reg(isp1362_hcd, HCCONTROL); |
| usb_hcd_resume_root_hub(hcd); |
| } |
| isp1362_write_reg32(isp1362_hcd, HCINTSTAT, intstat); |
| irqstat &= ~HCuPINT_OPR; |
| handled = 1; |
| } |
| |
| if (irqstat & HCuPINT_SUSP) { |
| isp1362_hcd->irq_stat[ISP1362_INT_SUSP]++; |
| handled = 1; |
| svc_mask &= ~HCuPINT_SUSP; |
| |
| pr_info("%s: SUSPEND IRQ\n", __func__); |
| } |
| |
| if (irqstat & HCuPINT_CLKRDY) { |
| isp1362_hcd->irq_stat[ISP1362_INT_CLKRDY]++; |
| handled = 1; |
| isp1362_hcd->irqenb &= ~HCuPINT_CLKRDY; |
| svc_mask &= ~HCuPINT_CLKRDY; |
| pr_info("%s: CLKRDY IRQ\n", __func__); |
| } |
| |
| if (svc_mask) |
| pr_err("%s: Unserviced interrupt(s) %04x\n", __func__, svc_mask); |
| |
| isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); |
| isp1362_hcd->irq_active--; |
| spin_unlock(&isp1362_hcd->lock); |
| |
| return IRQ_RETVAL(handled); |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| #define MAX_PERIODIC_LOAD 900 /* out of 1000 usec */ |
| static int balance(struct isp1362_hcd *isp1362_hcd, u16 interval, u16 load) |
| { |
| int i, branch = -ENOSPC; |
| |
| /* search for the least loaded schedule branch of that interval |
| * which has enough bandwidth left unreserved. |
| */ |
| for (i = 0; i < interval; i++) { |
| if (branch < 0 || isp1362_hcd->load[branch] > isp1362_hcd->load[i]) { |
| int j; |
| |
| for (j = i; j < PERIODIC_SIZE; j += interval) { |
| if ((isp1362_hcd->load[j] + load) > MAX_PERIODIC_LOAD) { |
| pr_err("%s: new load %d load[%02x] %d max %d\n", __func__, |
| load, j, isp1362_hcd->load[j], MAX_PERIODIC_LOAD); |
| break; |
| } |
| } |
| if (j < PERIODIC_SIZE) |
| continue; |
| branch = i; |
| } |
| } |
| return branch; |
| } |
| |
| /* NB! ALL the code above this point runs with isp1362_hcd->lock |
| held, irqs off |
| */ |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static int isp1362_urb_enqueue(struct usb_hcd *hcd, |
| struct urb *urb, |
| gfp_t mem_flags) |
| { |
| struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| struct usb_device *udev = urb->dev; |
| unsigned int pipe = urb->pipe; |
| int is_out = !usb_pipein(pipe); |
| int type = usb_pipetype(pipe); |
| int epnum = usb_pipeendpoint(pipe); |
| struct usb_host_endpoint *hep = urb->ep; |
| struct isp1362_ep *ep = NULL; |
| unsigned long flags; |
| int retval = 0; |
| |
| DBG(3, "%s: urb %p\n", __func__, urb); |
| |
| if (type == PIPE_ISOCHRONOUS) { |
| pr_err("Isochronous transfers not supported\n"); |
| return -ENOSPC; |
| } |
| |
| URB_DBG("%s: FA %d ep%d%s %s: len %d %s%s\n", __func__, |
| usb_pipedevice(pipe), epnum, |
| is_out ? "out" : "in", |
| usb_pipecontrol(pipe) ? "ctrl" : |
| usb_pipeint(pipe) ? "int" : |
| usb_pipebulk(pipe) ? "bulk" : |
| "iso", |
| urb->transfer_buffer_length, |
| (urb->transfer_flags & URB_ZERO_PACKET) ? "ZERO_PACKET " : "", |
| !(urb->transfer_flags & URB_SHORT_NOT_OK) ? |
| "short_ok" : ""); |
| |
| /* avoid all allocations within spinlocks: request or endpoint */ |
| if (!hep->hcpriv) { |
| ep = kzalloc(sizeof *ep, mem_flags); |
| if (!ep) |
| return -ENOMEM; |
| } |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| |
| /* don't submit to a dead or disabled port */ |
| if (!((isp1362_hcd->rhport[0] | isp1362_hcd->rhport[1]) & |
| USB_PORT_STAT_ENABLE) || |
| !HC_IS_RUNNING(hcd->state)) { |
| kfree(ep); |
| retval = -ENODEV; |
| goto fail_not_linked; |
| } |
| |
| retval = usb_hcd_link_urb_to_ep(hcd, urb); |
| if (retval) { |
| kfree(ep); |
| goto fail_not_linked; |
| } |
| |
| if (hep->hcpriv) { |
| ep = hep->hcpriv; |
| } else { |
| INIT_LIST_HEAD(&ep->schedule); |
| INIT_LIST_HEAD(&ep->active); |
| INIT_LIST_HEAD(&ep->remove_list); |
| ep->udev = usb_get_dev(udev); |
| ep->hep = hep; |
| ep->epnum = epnum; |
| ep->maxpacket = usb_maxpacket(udev, urb->pipe); |
| ep->ptd_offset = -EINVAL; |
| ep->ptd_index = -EINVAL; |
| usb_settoggle(udev, epnum, is_out, 0); |
| |
| if (type == PIPE_CONTROL) |
| ep->nextpid = USB_PID_SETUP; |
| else if (is_out) |
| ep->nextpid = USB_PID_OUT; |
| else |
| ep->nextpid = USB_PID_IN; |
| |
| switch (type) { |
| case PIPE_ISOCHRONOUS: |
| case PIPE_INTERRUPT: |
| if (urb->interval > PERIODIC_SIZE) |
| urb->interval = PERIODIC_SIZE; |
| ep->interval = urb->interval; |
| ep->branch = PERIODIC_SIZE; |
| ep->load = usb_calc_bus_time(udev->speed, !is_out, |
| type == PIPE_ISOCHRONOUS, |
| usb_maxpacket(udev, pipe)) / 1000; |
| break; |
| } |
| hep->hcpriv = ep; |
| } |
| ep->num_req = isp1362_hcd->req_serial++; |
| |
| /* maybe put endpoint into schedule */ |
| switch (type) { |
| case PIPE_CONTROL: |
| case PIPE_BULK: |
| if (list_empty(&ep->schedule)) { |
| DBG(1, "%s: Adding ep %p req %d to async schedule\n", |
| __func__, ep, ep->num_req); |
| list_add_tail(&ep->schedule, &isp1362_hcd->async); |
| } |
| break; |
| case PIPE_ISOCHRONOUS: |
| case PIPE_INTERRUPT: |
| urb->interval = ep->interval; |
| |
| /* urb submitted for already existing EP */ |
| if (ep->branch < PERIODIC_SIZE) |
| break; |
| |
| retval = balance(isp1362_hcd, ep->interval, ep->load); |
| if (retval < 0) { |
| pr_err("%s: balance returned %d\n", __func__, retval); |
| goto fail; |
| } |
| ep->branch = retval; |
| retval = 0; |
| isp1362_hcd->fmindex = isp1362_read_reg32(isp1362_hcd, HCFMNUM); |
| DBG(1, "%s: Current frame %04x branch %02x start_frame %04x(%04x)\n", |
| __func__, isp1362_hcd->fmindex, ep->branch, |
| ((isp1362_hcd->fmindex + PERIODIC_SIZE - 1) & |
| ~(PERIODIC_SIZE - 1)) + ep->branch, |
| (isp1362_hcd->fmindex & (PERIODIC_SIZE - 1)) + ep->branch); |
| |
| if (list_empty(&ep->schedule)) { |
| if (type == PIPE_ISOCHRONOUS) { |
| u16 frame = isp1362_hcd->fmindex; |
| |
| frame += max_t(u16, 8, ep->interval); |
| frame &= ~(ep->interval - 1); |
| frame |= ep->branch; |
| if (frame_before(frame, isp1362_hcd->fmindex)) |
| frame += ep->interval; |
| urb->start_frame = frame; |
| |
| DBG(1, "%s: Adding ep %p to isoc schedule\n", __func__, ep); |
| list_add_tail(&ep->schedule, &isp1362_hcd->isoc); |
| } else { |
| DBG(1, "%s: Adding ep %p to periodic schedule\n", __func__, ep); |
| list_add_tail(&ep->schedule, &isp1362_hcd->periodic); |
| } |
| } else |
| DBG(1, "%s: ep %p already scheduled\n", __func__, ep); |
| |
| DBG(2, "%s: load %d bandwidth %d -> %d\n", __func__, |
| ep->load / ep->interval, isp1362_hcd->load[ep->branch], |
| isp1362_hcd->load[ep->branch] + ep->load); |
| isp1362_hcd->load[ep->branch] += ep->load; |
| } |
| |
| urb->hcpriv = hep; |
| ALIGNSTAT(isp1362_hcd, urb->transfer_buffer); |
| |
| switch (type) { |
| case PIPE_CONTROL: |
| case PIPE_BULK: |
| start_atl_transfers(isp1362_hcd); |
| break; |
| case PIPE_INTERRUPT: |
| start_intl_transfers(isp1362_hcd); |
| break; |
| case PIPE_ISOCHRONOUS: |
| start_iso_transfers(isp1362_hcd); |
| break; |
| default: |
| BUG(); |
| } |
| fail: |
| if (retval) |
| usb_hcd_unlink_urb_from_ep(hcd, urb); |
| |
| |
| fail_not_linked: |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| if (retval) |
| DBG(0, "%s: urb %p failed with %d\n", __func__, urb, retval); |
| return retval; |
| } |
| |
| static int isp1362_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) |
| { |
| struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| struct usb_host_endpoint *hep; |
| unsigned long flags; |
| struct isp1362_ep *ep; |
| int retval = 0; |
| |
| DBG(3, "%s: urb %p\n", __func__, urb); |
| |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| retval = usb_hcd_check_unlink_urb(hcd, urb, status); |
| if (retval) |
| goto done; |
| |
| hep = urb->hcpriv; |
| |
| if (!hep) { |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| return -EIDRM; |
| } |
| |
| ep = hep->hcpriv; |
| if (ep) { |
| /* In front of queue? */ |
| if (ep->hep->urb_list.next == &urb->urb_list) { |
| if (!list_empty(&ep->active)) { |
| DBG(1, "%s: urb %p ep %p req %d active PTD[%d] $%04x\n", __func__, |
| urb, ep, ep->num_req, ep->ptd_index, ep->ptd_offset); |
| /* disable processing and queue PTD for removal */ |
| remove_ptd(isp1362_hcd, ep); |
| urb = NULL; |
| } |
| } |
| if (urb) { |
| DBG(1, "%s: Finishing ep %p req %d\n", __func__, ep, |
| ep->num_req); |
| finish_request(isp1362_hcd, ep, urb, status); |
| } else |
| DBG(1, "%s: urb %p active; wait4irq\n", __func__, urb); |
| } else { |
| pr_warn("%s: No EP in URB %p\n", __func__, urb); |
| retval = -EINVAL; |
| } |
| done: |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| |
| DBG(3, "%s: exit\n", __func__); |
| |
| return retval; |
| } |
| |
| static void isp1362_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep) |
| { |
| struct isp1362_ep *ep = hep->hcpriv; |
| struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| unsigned long flags; |
| |
| DBG(1, "%s: ep %p\n", __func__, ep); |
| if (!ep) |
| return; |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| if (!list_empty(&hep->urb_list)) { |
| if (!list_empty(&ep->active) && list_empty(&ep->remove_list)) { |
| DBG(1, "%s: Removing ep %p req %d PTD[%d] $%04x\n", __func__, |
| ep, ep->num_req, ep->ptd_index, ep->ptd_offset); |
| remove_ptd(isp1362_hcd, ep); |
| pr_info("%s: Waiting for Interrupt to clean up\n", __func__); |
| } |
| } |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| /* Wait for interrupt to clear out active list */ |
| while (!list_empty(&ep->active)) |
| msleep(1); |
| |
| DBG(1, "%s: Freeing EP %p\n", __func__, ep); |
| |
| usb_put_dev(ep->udev); |
| kfree(ep); |
| hep->hcpriv = NULL; |
| } |
| |
| static int isp1362_get_frame(struct usb_hcd *hcd) |
| { |
| struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| u32 fmnum; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| fmnum = isp1362_read_reg32(isp1362_hcd, HCFMNUM); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| |
| return (int)fmnum; |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| /* Adapted from ohci-hub.c */ |
| static int isp1362_hub_status_data(struct usb_hcd *hcd, char *buf) |
| { |
| struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| int ports, i, changed = 0; |
| unsigned long flags; |
| |
| if (!HC_IS_RUNNING(hcd->state)) |
| return -ESHUTDOWN; |
| |
| /* Report no status change now, if we are scheduled to be |
| called later */ |
| if (timer_pending(&hcd->rh_timer)) |
| return 0; |
| |
| ports = isp1362_hcd->rhdesca & RH_A_NDP; |
| BUG_ON(ports > 2); |
| |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| /* init status */ |
| if (isp1362_hcd->rhstatus & (RH_HS_LPSC | RH_HS_OCIC)) |
| buf[0] = changed = 1; |
| else |
| buf[0] = 0; |
| |
| for (i = 0; i < ports; i++) { |
| u32 status = isp1362_hcd->rhport[i]; |
| |
| if (status & (RH_PS_CSC | RH_PS_PESC | RH_PS_PSSC | |
| RH_PS_OCIC | RH_PS_PRSC)) { |
| changed = 1; |
| buf[0] |= 1 << (i + 1); |
| continue; |
| } |
| |
| if (!(status & RH_PS_CCS)) |
| continue; |
| } |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| return changed; |
| } |
| |
| static void isp1362_hub_descriptor(struct isp1362_hcd *isp1362_hcd, |
| struct usb_hub_descriptor *desc) |
| { |
| u32 reg = isp1362_hcd->rhdesca; |
| |
| DBG(3, "%s: enter\n", __func__); |
| |
| desc->bDescriptorType = USB_DT_HUB; |
| desc->bDescLength = 9; |
| desc->bHubContrCurrent = 0; |
| desc->bNbrPorts = reg & 0x3; |
| /* Power switching, device type, overcurrent. */ |
| desc->wHubCharacteristics = cpu_to_le16((reg >> 8) & |
| (HUB_CHAR_LPSM | |
| HUB_CHAR_COMPOUND | |
| HUB_CHAR_OCPM)); |
| DBG(0, "%s: hubcharacteristics = %02x\n", __func__, |
| desc->wHubCharacteristics); |
| desc->bPwrOn2PwrGood = (reg >> 24) & 0xff; |
| /* ports removable, and legacy PortPwrCtrlMask */ |
| desc->u.hs.DeviceRemovable[0] = desc->bNbrPorts == 1 ? 1 << 1 : 3 << 1; |
| desc->u.hs.DeviceRemovable[1] = ~0; |
| |
| DBG(3, "%s: exit\n", __func__); |
| } |
| |
| /* Adapted from ohci-hub.c */ |
| static int isp1362_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, |
| u16 wIndex, char *buf, u16 wLength) |
| { |
| struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| int retval = 0; |
| unsigned long flags; |
| unsigned long t1; |
| int ports = isp1362_hcd->rhdesca & RH_A_NDP; |
| u32 tmp = 0; |
| |
| switch (typeReq) { |
| case ClearHubFeature: |
| DBG(0, "ClearHubFeature: "); |
| switch (wValue) { |
| case C_HUB_OVER_CURRENT: |
| DBG(0, "C_HUB_OVER_CURRENT\n"); |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_OCIC); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| break; |
| case C_HUB_LOCAL_POWER: |
| DBG(0, "C_HUB_LOCAL_POWER\n"); |
| break; |
| default: |
| goto error; |
| } |
| break; |
| case SetHubFeature: |
| DBG(0, "SetHubFeature: "); |
| switch (wValue) { |
| case C_HUB_OVER_CURRENT: |
| case C_HUB_LOCAL_POWER: |
| DBG(0, "C_HUB_OVER_CURRENT or C_HUB_LOCAL_POWER\n"); |
| break; |
| default: |
| goto error; |
| } |
| break; |
| case GetHubDescriptor: |
| DBG(0, "GetHubDescriptor\n"); |
| isp1362_hub_descriptor(isp1362_hcd, (struct usb_hub_descriptor *)buf); |
| break; |
| case GetHubStatus: |
| DBG(0, "GetHubStatus\n"); |
| put_unaligned(cpu_to_le32(0), (__le32 *) buf); |
| break; |
| case GetPortStatus: |
| #ifndef VERBOSE |
| DBG(0, "GetPortStatus\n"); |
| #endif |
| if (!wIndex || wIndex > ports) |
| goto error; |
| tmp = isp1362_hcd->rhport[--wIndex]; |
| put_unaligned(cpu_to_le32(tmp), (__le32 *) buf); |
| break; |
| case ClearPortFeature: |
| DBG(0, "ClearPortFeature: "); |
| if (!wIndex || wIndex > ports) |
| goto error; |
| wIndex--; |
| |
| switch (wValue) { |
| case USB_PORT_FEAT_ENABLE: |
| DBG(0, "USB_PORT_FEAT_ENABLE\n"); |
| tmp = RH_PS_CCS; |
| break; |
| case USB_PORT_FEAT_C_ENABLE: |
| DBG(0, "USB_PORT_FEAT_C_ENABLE\n"); |
| tmp = RH_PS_PESC; |
| break; |
| case USB_PORT_FEAT_SUSPEND: |
| DBG(0, "USB_PORT_FEAT_SUSPEND\n"); |
| tmp = RH_PS_POCI; |
| break; |
| case USB_PORT_FEAT_C_SUSPEND: |
| DBG(0, "USB_PORT_FEAT_C_SUSPEND\n"); |
| tmp = RH_PS_PSSC; |
| break; |
| case USB_PORT_FEAT_POWER: |
| DBG(0, "USB_PORT_FEAT_POWER\n"); |
| tmp = RH_PS_LSDA; |
| |
| break; |
| case USB_PORT_FEAT_C_CONNECTION: |
| DBG(0, "USB_PORT_FEAT_C_CONNECTION\n"); |
| tmp = RH_PS_CSC; |
| break; |
| case USB_PORT_FEAT_C_OVER_CURRENT: |
| DBG(0, "USB_PORT_FEAT_C_OVER_CURRENT\n"); |
| tmp = RH_PS_OCIC; |
| break; |
| case USB_PORT_FEAT_C_RESET: |
| DBG(0, "USB_PORT_FEAT_C_RESET\n"); |
| tmp = RH_PS_PRSC; |
| break; |
| default: |
| goto error; |
| } |
| |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, tmp); |
| isp1362_hcd->rhport[wIndex] = |
| isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| break; |
| case SetPortFeature: |
| DBG(0, "SetPortFeature: "); |
| if (!wIndex || wIndex > ports) |
| goto error; |
| wIndex--; |
| switch (wValue) { |
| case USB_PORT_FEAT_SUSPEND: |
| DBG(0, "USB_PORT_FEAT_SUSPEND\n"); |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PSS); |
| isp1362_hcd->rhport[wIndex] = |
| isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| break; |
| case USB_PORT_FEAT_POWER: |
| DBG(0, "USB_PORT_FEAT_POWER\n"); |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, RH_PS_PPS); |
| isp1362_hcd->rhport[wIndex] = |
| isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| break; |
| case USB_PORT_FEAT_RESET: |
| DBG(0, "USB_PORT_FEAT_RESET\n"); |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| |
| t1 = jiffies + msecs_to_jiffies(USB_RESET_WIDTH); |
| while (time_before(jiffies, t1)) { |
| /* spin until any current reset finishes */ |
| for (;;) { |
| tmp = isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + wIndex); |
| if (!(tmp & RH_PS_PRS)) |
| break; |
| udelay(500); |
| } |
| if (!(tmp & RH_PS_CCS)) |
| break; |
| /* Reset lasts 10ms (claims datasheet) */ |
| isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + wIndex, (RH_PS_PRS)); |
| |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| msleep(10); |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| } |
| |
| isp1362_hcd->rhport[wIndex] = isp1362_read_reg32(isp1362_hcd, |
| HCRHPORT1 + wIndex); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| break; |
| default: |
| goto error; |
| } |
| break; |
| |
| default: |
| error: |
| /* "protocol stall" on error */ |
| DBG(0, "PROTOCOL STALL\n"); |
| retval = -EPIPE; |
| } |
| |
| return retval; |
| } |
| |
| #ifdef CONFIG_PM |
| static int isp1362_bus_suspend(struct usb_hcd *hcd) |
| { |
| int status = 0; |
| struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| unsigned long flags; |
| |
| if (time_before(jiffies, isp1362_hcd->next_statechange)) |
| msleep(5); |
| |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| |
| isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); |
| switch (isp1362_hcd->hc_control & OHCI_CTRL_HCFS) { |
| case OHCI_USB_RESUME: |
| DBG(0, "%s: resume/suspend?\n", __func__); |
| isp1362_hcd->hc_control &= ~OHCI_CTRL_HCFS; |
| isp1362_hcd->hc_control |= OHCI_USB_RESET; |
| isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); |
| fallthrough; |
| case OHCI_USB_RESET: |
| status = -EBUSY; |
| pr_warn("%s: needs reinit!\n", __func__); |
| goto done; |
| case OHCI_USB_SUSPEND: |
| pr_warn("%s: already suspended?\n", __func__); |
| goto done; |
| } |
| DBG(0, "%s: suspend root hub\n", __func__); |
| |
| /* First stop any processing */ |
| hcd->state = HC_STATE_QUIESCING; |
| if (!list_empty(&isp1362_hcd->atl_queue.active) || |
| !list_empty(&isp1362_hcd->intl_queue.active) || |
| !list_empty(&isp1362_hcd->istl_queue[0] .active) || |
| !list_empty(&isp1362_hcd->istl_queue[1] .active)) { |
| int limit; |
| |
| isp1362_write_reg32(isp1362_hcd, HCATLSKIP, ~0); |
| isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, ~0); |
| isp1362_write_reg16(isp1362_hcd, HCBUFSTAT, 0); |
| isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); |
| isp1362_write_reg32(isp1362_hcd, HCINTSTAT, OHCI_INTR_SF); |
| |
| DBG(0, "%s: stopping schedules ...\n", __func__); |
| limit = 2000; |
| while (limit > 0) { |
| udelay(250); |
| limit -= 250; |
| if (isp1362_read_reg32(isp1362_hcd, HCINTSTAT) & OHCI_INTR_SF) |
| break; |
| } |
| mdelay(7); |
| if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ATL) { |
| u32 done_map = isp1362_read_reg32(isp1362_hcd, HCATLDONE); |
| finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->atl_queue); |
| } |
| if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_INTL) { |
| u32 done_map = isp1362_read_reg32(isp1362_hcd, HCINTLDONE); |
| finish_transfers(isp1362_hcd, done_map, &isp1362_hcd->intl_queue); |
| } |
| if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ISTL0) |
| finish_iso_transfers(isp1362_hcd, &isp1362_hcd->istl_queue[0]); |
| if (isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_ISTL1) |
| finish_iso_transfers(isp1362_hcd, &isp1362_hcd->istl_queue[1]); |
| } |
| DBG(0, "%s: HCINTSTAT: %08x\n", __func__, |
| isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); |
| isp1362_write_reg32(isp1362_hcd, HCINTSTAT, |
| isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); |
| |
| /* Suspend hub */ |
| isp1362_hcd->hc_control = OHCI_USB_SUSPEND; |
| isp1362_show_reg(isp1362_hcd, HCCONTROL); |
| isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); |
| isp1362_show_reg(isp1362_hcd, HCCONTROL); |
| |
| #if 1 |
| isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); |
| if ((isp1362_hcd->hc_control & OHCI_CTRL_HCFS) != OHCI_USB_SUSPEND) { |
| pr_err("%s: controller won't suspend %08x\n", __func__, |
| isp1362_hcd->hc_control); |
| status = -EBUSY; |
| } else |
| #endif |
| { |
| /* no resumes until devices finish suspending */ |
| isp1362_hcd->next_statechange = jiffies + msecs_to_jiffies(5); |
| } |
| done: |
| if (status == 0) { |
| hcd->state = HC_STATE_SUSPENDED; |
| DBG(0, "%s: HCD suspended: %08x\n", __func__, |
| isp1362_read_reg32(isp1362_hcd, HCCONTROL)); |
| } |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| return status; |
| } |
| |
| static int isp1362_bus_resume(struct usb_hcd *hcd) |
| { |
| struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| u32 port; |
| unsigned long flags; |
| int status = -EINPROGRESS; |
| |
| if (time_before(jiffies, isp1362_hcd->next_statechange)) |
| msleep(5); |
| |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| isp1362_hcd->hc_control = isp1362_read_reg32(isp1362_hcd, HCCONTROL); |
| pr_info("%s: HCCONTROL: %08x\n", __func__, isp1362_hcd->hc_control); |
| if (hcd->state == HC_STATE_RESUMING) { |
| pr_warn("%s: duplicate resume\n", __func__); |
| status = 0; |
| } else |
| switch (isp1362_hcd->hc_control & OHCI_CTRL_HCFS) { |
| case OHCI_USB_SUSPEND: |
| DBG(0, "%s: resume root hub\n", __func__); |
| isp1362_hcd->hc_control &= ~OHCI_CTRL_HCFS; |
| isp1362_hcd->hc_control |= OHCI_USB_RESUME; |
| isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); |
| break; |
| case OHCI_USB_RESUME: |
| /* HCFS changes sometime after INTR_RD */ |
| DBG(0, "%s: remote wakeup\n", __func__); |
| break; |
| case OHCI_USB_OPER: |
| DBG(0, "%s: odd resume\n", __func__); |
| status = 0; |
| hcd->self.root_hub->dev.power.power_state = PMSG_ON; |
| break; |
| default: /* RESET, we lost power */ |
| DBG(0, "%s: root hub hardware reset\n", __func__); |
| status = -EBUSY; |
| } |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| if (status == -EBUSY) { |
| DBG(0, "%s: Restarting HC\n", __func__); |
| isp1362_hc_stop(hcd); |
| return isp1362_hc_start(hcd); |
| } |
| if (status != -EINPROGRESS) |
| return status; |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| port = isp1362_read_reg32(isp1362_hcd, HCRHDESCA) & RH_A_NDP; |
| while (port--) { |
| u32 stat = isp1362_read_reg32(isp1362_hcd, HCRHPORT1 + port); |
| |
| /* force global, not selective, resume */ |
| if (!(stat & RH_PS_PSS)) { |
| DBG(0, "%s: Not Resuming RH port %d\n", __func__, port); |
| continue; |
| } |
| DBG(0, "%s: Resuming RH port %d\n", __func__, port); |
| isp1362_write_reg32(isp1362_hcd, HCRHPORT1 + port, RH_PS_POCI); |
| } |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| |
| /* Some controllers (lucent) need extra-long delays */ |
| hcd->state = HC_STATE_RESUMING; |
| mdelay(20 /* usb 11.5.1.10 */ + 15); |
| |
| isp1362_hcd->hc_control = OHCI_USB_OPER; |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| isp1362_show_reg(isp1362_hcd, HCCONTROL); |
| isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| /* TRSMRCY */ |
| msleep(10); |
| |
| /* keep it alive for ~5x suspend + resume costs */ |
| isp1362_hcd->next_statechange = jiffies + msecs_to_jiffies(250); |
| |
| hcd->self.root_hub->dev.power.power_state = PMSG_ON; |
| hcd->state = HC_STATE_RUNNING; |
| return 0; |
| } |
| #else |
| #define isp1362_bus_suspend NULL |
| #define isp1362_bus_resume NULL |
| #endif |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static void dump_irq(struct seq_file *s, char *label, u16 mask) |
| { |
| seq_printf(s, "%-15s %04x%s%s%s%s%s%s\n", label, mask, |
| mask & HCuPINT_CLKRDY ? " clkrdy" : "", |
| mask & HCuPINT_SUSP ? " susp" : "", |
| mask & HCuPINT_OPR ? " opr" : "", |
| mask & HCuPINT_EOT ? " eot" : "", |
| mask & HCuPINT_ATL ? " atl" : "", |
| mask & HCuPINT_SOF ? " sof" : ""); |
| } |
| |
| static void dump_int(struct seq_file *s, char *label, u32 mask) |
| { |
| seq_printf(s, "%-15s %08x%s%s%s%s%s%s%s\n", label, mask, |
| mask & OHCI_INTR_MIE ? " MIE" : "", |
| mask & OHCI_INTR_RHSC ? " rhsc" : "", |
| mask & OHCI_INTR_FNO ? " fno" : "", |
| mask & OHCI_INTR_UE ? " ue" : "", |
| mask & OHCI_INTR_RD ? " rd" : "", |
| mask & OHCI_INTR_SF ? " sof" : "", |
| mask & OHCI_INTR_SO ? " so" : ""); |
| } |
| |
| static void dump_ctrl(struct seq_file *s, char *label, u32 mask) |
| { |
| seq_printf(s, "%-15s %08x%s%s%s\n", label, mask, |
| mask & OHCI_CTRL_RWC ? " rwc" : "", |
| mask & OHCI_CTRL_RWE ? " rwe" : "", |
| ({ |
| char *hcfs; |
| switch (mask & OHCI_CTRL_HCFS) { |
| case OHCI_USB_OPER: |
| hcfs = " oper"; |
| break; |
| case OHCI_USB_RESET: |
| hcfs = " reset"; |
| break; |
| case OHCI_USB_RESUME: |
| hcfs = " resume"; |
| break; |
| case OHCI_USB_SUSPEND: |
| hcfs = " suspend"; |
| break; |
| default: |
| hcfs = " ?"; |
| } |
| hcfs; |
| })); |
| } |
| |
| static void dump_regs(struct seq_file *s, struct isp1362_hcd *isp1362_hcd) |
| { |
| seq_printf(s, "HCREVISION [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCREVISION), |
| isp1362_read_reg32(isp1362_hcd, HCREVISION)); |
| seq_printf(s, "HCCONTROL [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCCONTROL), |
| isp1362_read_reg32(isp1362_hcd, HCCONTROL)); |
| seq_printf(s, "HCCMDSTAT [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCCMDSTAT), |
| isp1362_read_reg32(isp1362_hcd, HCCMDSTAT)); |
| seq_printf(s, "HCINTSTAT [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTSTAT), |
| isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); |
| seq_printf(s, "HCINTENB [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTENB), |
| isp1362_read_reg32(isp1362_hcd, HCINTENB)); |
| seq_printf(s, "HCFMINTVL [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMINTVL), |
| isp1362_read_reg32(isp1362_hcd, HCFMINTVL)); |
| seq_printf(s, "HCFMREM [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMREM), |
| isp1362_read_reg32(isp1362_hcd, HCFMREM)); |
| seq_printf(s, "HCFMNUM [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCFMNUM), |
| isp1362_read_reg32(isp1362_hcd, HCFMNUM)); |
| seq_printf(s, "HCLSTHRESH [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCLSTHRESH), |
| isp1362_read_reg32(isp1362_hcd, HCLSTHRESH)); |
| seq_printf(s, "HCRHDESCA [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHDESCA), |
| isp1362_read_reg32(isp1362_hcd, HCRHDESCA)); |
| seq_printf(s, "HCRHDESCB [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHDESCB), |
| isp1362_read_reg32(isp1362_hcd, HCRHDESCB)); |
| seq_printf(s, "HCRHSTATUS [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHSTATUS), |
| isp1362_read_reg32(isp1362_hcd, HCRHSTATUS)); |
| seq_printf(s, "HCRHPORT1 [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHPORT1), |
| isp1362_read_reg32(isp1362_hcd, HCRHPORT1)); |
| seq_printf(s, "HCRHPORT2 [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCRHPORT2), |
| isp1362_read_reg32(isp1362_hcd, HCRHPORT2)); |
| seq_printf(s, "\n"); |
| seq_printf(s, "HCHWCFG [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCHWCFG), |
| isp1362_read_reg16(isp1362_hcd, HCHWCFG)); |
| seq_printf(s, "HCDMACFG [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCDMACFG), |
| isp1362_read_reg16(isp1362_hcd, HCDMACFG)); |
| seq_printf(s, "HCXFERCTR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCXFERCTR), |
| isp1362_read_reg16(isp1362_hcd, HCXFERCTR)); |
| seq_printf(s, "HCuPINT [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCuPINT), |
| isp1362_read_reg16(isp1362_hcd, HCuPINT)); |
| seq_printf(s, "HCuPINTENB [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCuPINTENB), |
| isp1362_read_reg16(isp1362_hcd, HCuPINTENB)); |
| seq_printf(s, "HCCHIPID [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCCHIPID), |
| isp1362_read_reg16(isp1362_hcd, HCCHIPID)); |
| seq_printf(s, "HCSCRATCH [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCSCRATCH), |
| isp1362_read_reg16(isp1362_hcd, HCSCRATCH)); |
| seq_printf(s, "HCBUFSTAT [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCBUFSTAT), |
| isp1362_read_reg16(isp1362_hcd, HCBUFSTAT)); |
| seq_printf(s, "HCDIRADDR [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCDIRADDR), |
| isp1362_read_reg32(isp1362_hcd, HCDIRADDR)); |
| #if 0 |
| seq_printf(s, "HCDIRDATA [%02x] %04x\n", ISP1362_REG_NO(HCDIRDATA), |
| isp1362_read_reg16(isp1362_hcd, HCDIRDATA)); |
| #endif |
| seq_printf(s, "HCISTLBUFSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCISTLBUFSZ), |
| isp1362_read_reg16(isp1362_hcd, HCISTLBUFSZ)); |
| seq_printf(s, "HCISTLRATE [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCISTLRATE), |
| isp1362_read_reg16(isp1362_hcd, HCISTLRATE)); |
| seq_printf(s, "\n"); |
| seq_printf(s, "HCINTLBUFSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLBUFSZ), |
| isp1362_read_reg16(isp1362_hcd, HCINTLBUFSZ)); |
| seq_printf(s, "HCINTLBLKSZ[%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLBLKSZ), |
| isp1362_read_reg16(isp1362_hcd, HCINTLBLKSZ)); |
| seq_printf(s, "HCINTLDONE [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLDONE), |
| isp1362_read_reg32(isp1362_hcd, HCINTLDONE)); |
| seq_printf(s, "HCINTLSKIP [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLSKIP), |
| isp1362_read_reg32(isp1362_hcd, HCINTLSKIP)); |
| seq_printf(s, "HCINTLLAST [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLLAST), |
| isp1362_read_reg32(isp1362_hcd, HCINTLLAST)); |
| seq_printf(s, "HCINTLCURR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCINTLCURR), |
| isp1362_read_reg16(isp1362_hcd, HCINTLCURR)); |
| seq_printf(s, "\n"); |
| seq_printf(s, "HCATLBUFSZ [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLBUFSZ), |
| isp1362_read_reg16(isp1362_hcd, HCATLBUFSZ)); |
| seq_printf(s, "HCATLBLKSZ [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLBLKSZ), |
| isp1362_read_reg16(isp1362_hcd, HCATLBLKSZ)); |
| #if 0 |
| seq_printf(s, "HCATLDONE [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDONE), |
| isp1362_read_reg32(isp1362_hcd, HCATLDONE)); |
| #endif |
| seq_printf(s, "HCATLSKIP [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLSKIP), |
| isp1362_read_reg32(isp1362_hcd, HCATLSKIP)); |
| seq_printf(s, "HCATLLAST [%02x] %08x\n", ISP1362_REG_NO(ISP1362_REG_HCATLLAST), |
| isp1362_read_reg32(isp1362_hcd, HCATLLAST)); |
| seq_printf(s, "HCATLCURR [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLCURR), |
| isp1362_read_reg16(isp1362_hcd, HCATLCURR)); |
| seq_printf(s, "\n"); |
| seq_printf(s, "HCATLDTC [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDTC), |
| isp1362_read_reg16(isp1362_hcd, HCATLDTC)); |
| seq_printf(s, "HCATLDTCTO [%02x] %04x\n", ISP1362_REG_NO(ISP1362_REG_HCATLDTCTO), |
| isp1362_read_reg16(isp1362_hcd, HCATLDTCTO)); |
| } |
| |
| static int isp1362_show(struct seq_file *s, void *unused) |
| { |
| struct isp1362_hcd *isp1362_hcd = s->private; |
| struct isp1362_ep *ep; |
| int i; |
| |
| seq_printf(s, "%s\n%s version %s\n", |
| isp1362_hcd_to_hcd(isp1362_hcd)->product_desc, hcd_name, DRIVER_VERSION); |
| |
| /* collect statistics to help estimate potential win for |
| * DMA engines that care about alignment (PXA) |
| */ |
| seq_printf(s, "alignment: 16b/%ld 8b/%ld 4b/%ld 2b/%ld 1b/%ld\n", |
| isp1362_hcd->stat16, isp1362_hcd->stat8, isp1362_hcd->stat4, |
| isp1362_hcd->stat2, isp1362_hcd->stat1); |
| seq_printf(s, "max # ptds in ATL fifo: %d\n", isp1362_hcd->atl_queue.stat_maxptds); |
| seq_printf(s, "max # ptds in INTL fifo: %d\n", isp1362_hcd->intl_queue.stat_maxptds); |
| seq_printf(s, "max # ptds in ISTL fifo: %d\n", |
| max(isp1362_hcd->istl_queue[0] .stat_maxptds, |
| isp1362_hcd->istl_queue[1] .stat_maxptds)); |
| |
| /* FIXME: don't show the following in suspended state */ |
| spin_lock_irq(&isp1362_hcd->lock); |
| |
| dump_irq(s, "hc_irq_enable", isp1362_read_reg16(isp1362_hcd, HCuPINTENB)); |
| dump_irq(s, "hc_irq_status", isp1362_read_reg16(isp1362_hcd, HCuPINT)); |
| dump_int(s, "ohci_int_enable", isp1362_read_reg32(isp1362_hcd, HCINTENB)); |
| dump_int(s, "ohci_int_status", isp1362_read_reg32(isp1362_hcd, HCINTSTAT)); |
| dump_ctrl(s, "ohci_control", isp1362_read_reg32(isp1362_hcd, HCCONTROL)); |
| |
| for (i = 0; i < NUM_ISP1362_IRQS; i++) |
| if (isp1362_hcd->irq_stat[i]) |
| seq_printf(s, "%-15s: %d\n", |
| ISP1362_INT_NAME(i), isp1362_hcd->irq_stat[i]); |
| |
| dump_regs(s, isp1362_hcd); |
| list_for_each_entry(ep, &isp1362_hcd->async, schedule) { |
| struct urb *urb; |
| |
| seq_printf(s, "%p, ep%d%s, maxpacket %d:\n", ep, ep->epnum, |
| ({ |
| char *s; |
| switch (ep->nextpid) { |
| case USB_PID_IN: |
| s = "in"; |
| break; |
| case USB_PID_OUT: |
| s = "out"; |
| break; |
| case USB_PID_SETUP: |
| s = "setup"; |
| break; |
| case USB_PID_ACK: |
| s = "status"; |
| break; |
| default: |
| s = "?"; |
| break; |
| } |
| s;}), ep->maxpacket) ; |
| list_for_each_entry(urb, &ep->hep->urb_list, urb_list) { |
| seq_printf(s, " urb%p, %d/%d\n", urb, |
| urb->actual_length, |
| urb->transfer_buffer_length); |
| } |
| } |
| if (!list_empty(&isp1362_hcd->async)) |
| seq_printf(s, "\n"); |
| dump_ptd_queue(&isp1362_hcd->atl_queue); |
| |
| seq_printf(s, "periodic size= %d\n", PERIODIC_SIZE); |
| |
| list_for_each_entry(ep, &isp1362_hcd->periodic, schedule) { |
| seq_printf(s, "branch:%2d load:%3d PTD[%d] $%04x:\n", ep->branch, |
| isp1362_hcd->load[ep->branch], ep->ptd_index, ep->ptd_offset); |
| |
| seq_printf(s, " %d/%p (%sdev%d ep%d%s max %d)\n", |
| ep->interval, ep, |
| (ep->udev->speed == USB_SPEED_FULL) ? "" : "ls ", |
| ep->udev->devnum, ep->epnum, |
| (ep->epnum == 0) ? "" : |
| ((ep->nextpid == USB_PID_IN) ? |
| "in" : "out"), ep->maxpacket); |
| } |
| dump_ptd_queue(&isp1362_hcd->intl_queue); |
| |
| seq_printf(s, "ISO:\n"); |
| |
| list_for_each_entry(ep, &isp1362_hcd->isoc, schedule) { |
| seq_printf(s, " %d/%p (%sdev%d ep%d%s max %d)\n", |
| ep->interval, ep, |
| (ep->udev->speed == USB_SPEED_FULL) ? "" : "ls ", |
| ep->udev->devnum, ep->epnum, |
| (ep->epnum == 0) ? "" : |
| ((ep->nextpid == USB_PID_IN) ? |
| "in" : "out"), ep->maxpacket); |
| } |
| |
| spin_unlock_irq(&isp1362_hcd->lock); |
| seq_printf(s, "\n"); |
| |
| return 0; |
| } |
| DEFINE_SHOW_ATTRIBUTE(isp1362); |
| |
| /* expect just one isp1362_hcd per system */ |
| static void create_debug_file(struct isp1362_hcd *isp1362_hcd) |
| { |
| debugfs_create_file("isp1362", S_IRUGO, usb_debug_root, isp1362_hcd, |
| &isp1362_fops); |
| } |
| |
| static void remove_debug_file(struct isp1362_hcd *isp1362_hcd) |
| { |
| debugfs_remove(debugfs_lookup("isp1362", usb_debug_root)); |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static void __isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd) |
| { |
| int tmp = 20; |
| |
| isp1362_write_reg16(isp1362_hcd, HCSWRES, HCSWRES_MAGIC); |
| isp1362_write_reg32(isp1362_hcd, HCCMDSTAT, OHCI_HCR); |
| while (--tmp) { |
| mdelay(1); |
| if (!(isp1362_read_reg32(isp1362_hcd, HCCMDSTAT) & OHCI_HCR)) |
| break; |
| } |
| if (!tmp) |
| pr_err("Software reset timeout\n"); |
| } |
| |
| static void isp1362_sw_reset(struct isp1362_hcd *isp1362_hcd) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| __isp1362_sw_reset(isp1362_hcd); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| } |
| |
| static int isp1362_mem_config(struct usb_hcd *hcd) |
| { |
| struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| unsigned long flags; |
| u32 total; |
| u16 istl_size = ISP1362_ISTL_BUFSIZE; |
| u16 intl_blksize = ISP1362_INTL_BLKSIZE + PTD_HEADER_SIZE; |
| u16 intl_size = ISP1362_INTL_BUFFERS * intl_blksize; |
| u16 atl_blksize = ISP1362_ATL_BLKSIZE + PTD_HEADER_SIZE; |
| u16 atl_buffers = (ISP1362_BUF_SIZE - (istl_size + intl_size)) / atl_blksize; |
| u16 atl_size; |
| int i; |
| |
| WARN_ON(istl_size & 3); |
| WARN_ON(atl_blksize & 3); |
| WARN_ON(intl_blksize & 3); |
| WARN_ON(atl_blksize < PTD_HEADER_SIZE); |
| WARN_ON(intl_blksize < PTD_HEADER_SIZE); |
| |
| BUG_ON((unsigned)ISP1362_INTL_BUFFERS > 32); |
| if (atl_buffers > 32) |
| atl_buffers = 32; |
| atl_size = atl_buffers * atl_blksize; |
| total = atl_size + intl_size + istl_size; |
| dev_info(hcd->self.controller, "ISP1362 Memory usage:\n"); |
| dev_info(hcd->self.controller, " ISTL: 2 * %4d: %4d @ $%04x:$%04x\n", |
| istl_size / 2, istl_size, 0, istl_size / 2); |
| dev_info(hcd->self.controller, " INTL: %4d * (%3zu+8): %4d @ $%04x\n", |
| ISP1362_INTL_BUFFERS, intl_blksize - PTD_HEADER_SIZE, |
| intl_size, istl_size); |
| dev_info(hcd->self.controller, " ATL : %4d * (%3zu+8): %4d @ $%04x\n", |
| atl_buffers, atl_blksize - PTD_HEADER_SIZE, |
| atl_size, istl_size + intl_size); |
| dev_info(hcd->self.controller, " USED/FREE: %4d %4d\n", total, |
| ISP1362_BUF_SIZE - total); |
| |
| if (total > ISP1362_BUF_SIZE) { |
| dev_err(hcd->self.controller, "%s: Memory requested: %d, available %d\n", |
| __func__, total, ISP1362_BUF_SIZE); |
| return -ENOMEM; |
| } |
| |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| |
| for (i = 0; i < 2; i++) { |
| isp1362_hcd->istl_queue[i].buf_start = i * istl_size / 2, |
| isp1362_hcd->istl_queue[i].buf_size = istl_size / 2; |
| isp1362_hcd->istl_queue[i].blk_size = 4; |
| INIT_LIST_HEAD(&isp1362_hcd->istl_queue[i].active); |
| snprintf(isp1362_hcd->istl_queue[i].name, |
| sizeof(isp1362_hcd->istl_queue[i].name), "ISTL%d", i); |
| DBG(3, "%s: %5s buf $%04x %d\n", __func__, |
| isp1362_hcd->istl_queue[i].name, |
| isp1362_hcd->istl_queue[i].buf_start, |
| isp1362_hcd->istl_queue[i].buf_size); |
| } |
| isp1362_write_reg16(isp1362_hcd, HCISTLBUFSZ, istl_size / 2); |
| |
| isp1362_hcd->intl_queue.buf_start = istl_size; |
| isp1362_hcd->intl_queue.buf_size = intl_size; |
| isp1362_hcd->intl_queue.buf_count = ISP1362_INTL_BUFFERS; |
| isp1362_hcd->intl_queue.blk_size = intl_blksize; |
| isp1362_hcd->intl_queue.buf_avail = isp1362_hcd->intl_queue.buf_count; |
| isp1362_hcd->intl_queue.skip_map = ~0; |
| INIT_LIST_HEAD(&isp1362_hcd->intl_queue.active); |
| |
| isp1362_write_reg16(isp1362_hcd, HCINTLBUFSZ, |
| isp1362_hcd->intl_queue.buf_size); |
| isp1362_write_reg16(isp1362_hcd, HCINTLBLKSZ, |
| isp1362_hcd->intl_queue.blk_size - PTD_HEADER_SIZE); |
| isp1362_write_reg32(isp1362_hcd, HCINTLSKIP, ~0); |
| isp1362_write_reg32(isp1362_hcd, HCINTLLAST, |
| 1 << (ISP1362_INTL_BUFFERS - 1)); |
| |
| isp1362_hcd->atl_queue.buf_start = istl_size + intl_size; |
| isp1362_hcd->atl_queue.buf_size = atl_size; |
| isp1362_hcd->atl_queue.buf_count = atl_buffers; |
| isp1362_hcd->atl_queue.blk_size = atl_blksize; |
| isp1362_hcd->atl_queue.buf_avail = isp1362_hcd->atl_queue.buf_count; |
| isp1362_hcd->atl_queue.skip_map = ~0; |
| INIT_LIST_HEAD(&isp1362_hcd->atl_queue.active); |
| |
| isp1362_write_reg16(isp1362_hcd, HCATLBUFSZ, |
| isp1362_hcd->atl_queue.buf_size); |
| isp1362_write_reg16(isp1362_hcd, HCATLBLKSZ, |
| isp1362_hcd->atl_queue.blk_size - PTD_HEADER_SIZE); |
| isp1362_write_reg32(isp1362_hcd, HCATLSKIP, ~0); |
| isp1362_write_reg32(isp1362_hcd, HCATLLAST, |
| 1 << (atl_buffers - 1)); |
| |
| snprintf(isp1362_hcd->atl_queue.name, |
| sizeof(isp1362_hcd->atl_queue.name), "ATL"); |
| snprintf(isp1362_hcd->intl_queue.name, |
| sizeof(isp1362_hcd->intl_queue.name), "INTL"); |
| DBG(3, "%s: %5s buf $%04x %2d * %4d = %4d\n", __func__, |
| isp1362_hcd->intl_queue.name, |
| isp1362_hcd->intl_queue.buf_start, |
| ISP1362_INTL_BUFFERS, isp1362_hcd->intl_queue.blk_size, |
| isp1362_hcd->intl_queue.buf_size); |
| DBG(3, "%s: %5s buf $%04x %2d * %4d = %4d\n", __func__, |
| isp1362_hcd->atl_queue.name, |
| isp1362_hcd->atl_queue.buf_start, |
| atl_buffers, isp1362_hcd->atl_queue.blk_size, |
| isp1362_hcd->atl_queue.buf_size); |
| |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| |
| return 0; |
| } |
| |
| static int isp1362_hc_reset(struct usb_hcd *hcd) |
| { |
| int ret = 0; |
| struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| unsigned long t; |
| unsigned long timeout = 100; |
| unsigned long flags; |
| int clkrdy = 0; |
| |
| pr_debug("%s:\n", __func__); |
| |
| if (isp1362_hcd->board && isp1362_hcd->board->reset) { |
| isp1362_hcd->board->reset(hcd->self.controller, 1); |
| msleep(20); |
| if (isp1362_hcd->board->clock) |
| isp1362_hcd->board->clock(hcd->self.controller, 1); |
| isp1362_hcd->board->reset(hcd->self.controller, 0); |
| } else |
| isp1362_sw_reset(isp1362_hcd); |
| |
| /* chip has been reset. First we need to see a clock */ |
| t = jiffies + msecs_to_jiffies(timeout); |
| while (!clkrdy && time_before_eq(jiffies, t)) { |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| clkrdy = isp1362_read_reg16(isp1362_hcd, HCuPINT) & HCuPINT_CLKRDY; |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| if (!clkrdy) |
| msleep(4); |
| } |
| |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_CLKRDY); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| if (!clkrdy) { |
| pr_err("Clock not ready after %lums\n", timeout); |
| ret = -ENODEV; |
| } |
| return ret; |
| } |
| |
| static void isp1362_hc_stop(struct usb_hcd *hcd) |
| { |
| struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| unsigned long flags; |
| u32 tmp; |
| |
| pr_debug("%s:\n", __func__); |
| |
| del_timer_sync(&hcd->rh_timer); |
| |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| |
| isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); |
| |
| /* Switch off power for all ports */ |
| tmp = isp1362_read_reg32(isp1362_hcd, HCRHDESCA); |
| tmp &= ~(RH_A_NPS | RH_A_PSM); |
| isp1362_write_reg32(isp1362_hcd, HCRHDESCA, tmp); |
| isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPS); |
| |
| /* Reset the chip */ |
| if (isp1362_hcd->board && isp1362_hcd->board->reset) |
| isp1362_hcd->board->reset(hcd->self.controller, 1); |
| else |
| __isp1362_sw_reset(isp1362_hcd); |
| |
| if (isp1362_hcd->board && isp1362_hcd->board->clock) |
| isp1362_hcd->board->clock(hcd->self.controller, 0); |
| |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| } |
| |
| #ifdef CHIP_BUFFER_TEST |
| static int isp1362_chip_test(struct isp1362_hcd *isp1362_hcd) |
| { |
| int ret = 0; |
| u16 *ref; |
| unsigned long flags; |
| |
| ref = kmalloc(2 * ISP1362_BUF_SIZE, GFP_KERNEL); |
| if (ref) { |
| int offset; |
| u16 *tst = &ref[ISP1362_BUF_SIZE / 2]; |
| |
| for (offset = 0; offset < ISP1362_BUF_SIZE / 2; offset++) { |
| ref[offset] = ~offset; |
| tst[offset] = offset; |
| } |
| |
| for (offset = 0; offset < 4; offset++) { |
| int j; |
| |
| for (j = 0; j < 8; j++) { |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| isp1362_write_buffer(isp1362_hcd, (u8 *)ref + offset, 0, j); |
| isp1362_read_buffer(isp1362_hcd, (u8 *)tst + offset, 0, j); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| |
| if (memcmp(ref, tst, j)) { |
| ret = -ENODEV; |
| pr_err("%s: memory check with %d byte offset %d failed\n", |
| __func__, j, offset); |
| dump_data((u8 *)ref + offset, j); |
| dump_data((u8 *)tst + offset, j); |
| } |
| } |
| } |
| |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| isp1362_write_buffer(isp1362_hcd, ref, 0, ISP1362_BUF_SIZE); |
| isp1362_read_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| |
| if (memcmp(ref, tst, ISP1362_BUF_SIZE)) { |
| ret = -ENODEV; |
| pr_err("%s: memory check failed\n", __func__); |
| dump_data((u8 *)tst, ISP1362_BUF_SIZE / 2); |
| } |
| |
| for (offset = 0; offset < 256; offset++) { |
| int test_size = 0; |
| |
| yield(); |
| |
| memset(tst, 0, ISP1362_BUF_SIZE); |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| isp1362_write_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); |
| isp1362_read_buffer(isp1362_hcd, tst, 0, ISP1362_BUF_SIZE); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| if (memcmp(tst, tst + (ISP1362_BUF_SIZE / (2 * sizeof(*tst))), |
| ISP1362_BUF_SIZE / 2)) { |
| pr_err("%s: Failed to clear buffer\n", __func__); |
| dump_data((u8 *)tst, ISP1362_BUF_SIZE); |
| break; |
| } |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| isp1362_write_buffer(isp1362_hcd, ref, offset * 2, PTD_HEADER_SIZE); |
| isp1362_write_buffer(isp1362_hcd, ref + PTD_HEADER_SIZE / sizeof(*ref), |
| offset * 2 + PTD_HEADER_SIZE, test_size); |
| isp1362_read_buffer(isp1362_hcd, tst, offset * 2, |
| PTD_HEADER_SIZE + test_size); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| if (memcmp(ref, tst, PTD_HEADER_SIZE + test_size)) { |
| dump_data(((u8 *)ref) + offset, PTD_HEADER_SIZE + test_size); |
| dump_data((u8 *)tst, PTD_HEADER_SIZE + test_size); |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| isp1362_read_buffer(isp1362_hcd, tst, offset * 2, |
| PTD_HEADER_SIZE + test_size); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| if (memcmp(ref, tst, PTD_HEADER_SIZE + test_size)) { |
| ret = -ENODEV; |
| pr_err("%s: memory check with offset %02x failed\n", |
| __func__, offset); |
| break; |
| } |
| pr_warn("%s: memory check with offset %02x ok after second read\n", |
| __func__, offset); |
| } |
| } |
| kfree(ref); |
| } |
| return ret; |
| } |
| #endif |
| |
| static int isp1362_hc_start(struct usb_hcd *hcd) |
| { |
| int ret; |
| struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| struct isp1362_platform_data *board = isp1362_hcd->board; |
| u16 hwcfg; |
| u16 chipid; |
| unsigned long flags; |
| |
| pr_debug("%s:\n", __func__); |
| |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| chipid = isp1362_read_reg16(isp1362_hcd, HCCHIPID); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| |
| if ((chipid & HCCHIPID_MASK) != HCCHIPID_MAGIC) { |
| pr_err("%s: Invalid chip ID %04x\n", __func__, chipid); |
| return -ENODEV; |
| } |
| |
| #ifdef CHIP_BUFFER_TEST |
| ret = isp1362_chip_test(isp1362_hcd); |
| if (ret) |
| return -ENODEV; |
| #endif |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| /* clear interrupt status and disable all interrupt sources */ |
| isp1362_write_reg16(isp1362_hcd, HCuPINT, 0xff); |
| isp1362_write_reg16(isp1362_hcd, HCuPINTENB, 0); |
| |
| /* HW conf */ |
| hwcfg = HCHWCFG_INT_ENABLE | HCHWCFG_DBWIDTH(1); |
| if (board->sel15Kres) |
| hwcfg |= HCHWCFG_PULLDOWN_DS2 | |
| ((MAX_ROOT_PORTS > 1) ? HCHWCFG_PULLDOWN_DS1 : 0); |
| if (board->clknotstop) |
| hwcfg |= HCHWCFG_CLKNOTSTOP; |
| if (board->oc_enable) |
| hwcfg |= HCHWCFG_ANALOG_OC; |
| if (board->int_act_high) |
| hwcfg |= HCHWCFG_INT_POL; |
| if (board->int_edge_triggered) |
| hwcfg |= HCHWCFG_INT_TRIGGER; |
| if (board->dreq_act_high) |
| hwcfg |= HCHWCFG_DREQ_POL; |
| if (board->dack_act_high) |
| hwcfg |= HCHWCFG_DACK_POL; |
| isp1362_write_reg16(isp1362_hcd, HCHWCFG, hwcfg); |
| isp1362_show_reg(isp1362_hcd, HCHWCFG); |
| isp1362_write_reg16(isp1362_hcd, HCDMACFG, 0); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| |
| ret = isp1362_mem_config(hcd); |
| if (ret) |
| return ret; |
| |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| |
| /* Root hub conf */ |
| isp1362_hcd->rhdesca = 0; |
| if (board->no_power_switching) |
| isp1362_hcd->rhdesca |= RH_A_NPS; |
| if (board->power_switching_mode) |
| isp1362_hcd->rhdesca |= RH_A_PSM; |
| if (board->potpg) |
| isp1362_hcd->rhdesca |= (board->potpg << 24) & RH_A_POTPGT; |
| else |
| isp1362_hcd->rhdesca |= (25 << 24) & RH_A_POTPGT; |
| |
| isp1362_write_reg32(isp1362_hcd, HCRHDESCA, isp1362_hcd->rhdesca & ~RH_A_OCPM); |
| isp1362_write_reg32(isp1362_hcd, HCRHDESCA, isp1362_hcd->rhdesca | RH_A_OCPM); |
| isp1362_hcd->rhdesca = isp1362_read_reg32(isp1362_hcd, HCRHDESCA); |
| |
| isp1362_hcd->rhdescb = RH_B_PPCM; |
| isp1362_write_reg32(isp1362_hcd, HCRHDESCB, isp1362_hcd->rhdescb); |
| isp1362_hcd->rhdescb = isp1362_read_reg32(isp1362_hcd, HCRHDESCB); |
| |
| isp1362_read_reg32(isp1362_hcd, HCFMINTVL); |
| isp1362_write_reg32(isp1362_hcd, HCFMINTVL, (FSMP(FI) << 16) | FI); |
| isp1362_write_reg32(isp1362_hcd, HCLSTHRESH, LSTHRESH); |
| |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| |
| isp1362_hcd->hc_control = OHCI_USB_OPER; |
| hcd->state = HC_STATE_RUNNING; |
| |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| /* Set up interrupts */ |
| isp1362_hcd->intenb = OHCI_INTR_MIE | OHCI_INTR_RHSC | OHCI_INTR_UE; |
| isp1362_hcd->intenb |= OHCI_INTR_RD; |
| isp1362_hcd->irqenb = HCuPINT_OPR | HCuPINT_SUSP; |
| isp1362_write_reg32(isp1362_hcd, HCINTENB, isp1362_hcd->intenb); |
| isp1362_write_reg16(isp1362_hcd, HCuPINTENB, isp1362_hcd->irqenb); |
| |
| /* Go operational */ |
| isp1362_write_reg32(isp1362_hcd, HCCONTROL, isp1362_hcd->hc_control); |
| /* enable global power */ |
| isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPSC | RH_HS_DRWE); |
| |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| |
| return 0; |
| } |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static const struct hc_driver isp1362_hc_driver = { |
| .description = hcd_name, |
| .product_desc = "ISP1362 Host Controller", |
| .hcd_priv_size = sizeof(struct isp1362_hcd), |
| |
| .irq = isp1362_irq, |
| .flags = HCD_USB11 | HCD_MEMORY, |
| |
| .reset = isp1362_hc_reset, |
| .start = isp1362_hc_start, |
| .stop = isp1362_hc_stop, |
| |
| .urb_enqueue = isp1362_urb_enqueue, |
| .urb_dequeue = isp1362_urb_dequeue, |
| .endpoint_disable = isp1362_endpoint_disable, |
| |
| .get_frame_number = isp1362_get_frame, |
| |
| .hub_status_data = isp1362_hub_status_data, |
| .hub_control = isp1362_hub_control, |
| .bus_suspend = isp1362_bus_suspend, |
| .bus_resume = isp1362_bus_resume, |
| }; |
| |
| /*-------------------------------------------------------------------------*/ |
| |
| static int isp1362_remove(struct platform_device *pdev) |
| { |
| struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| |
| remove_debug_file(isp1362_hcd); |
| DBG(0, "%s: Removing HCD\n", __func__); |
| usb_remove_hcd(hcd); |
| DBG(0, "%s: put_hcd\n", __func__); |
| usb_put_hcd(hcd); |
| DBG(0, "%s: Done\n", __func__); |
| |
| return 0; |
| } |
| |
| static int isp1362_probe(struct platform_device *pdev) |
| { |
| struct usb_hcd *hcd; |
| struct isp1362_hcd *isp1362_hcd; |
| struct resource *data, *irq_res; |
| void __iomem *addr_reg; |
| void __iomem *data_reg; |
| int irq; |
| int retval = 0; |
| unsigned int irq_flags = 0; |
| |
| if (usb_disabled()) |
| return -ENODEV; |
| |
| /* basic sanity checks first. board-specific init logic should |
| * have initialized this the three resources and probably board |
| * specific platform_data. we don't probe for IRQs, and do only |
| * minimal sanity checking. |
| */ |
| if (pdev->num_resources < 3) |
| return -ENODEV; |
| |
| irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| if (!irq_res) |
| return -ENODEV; |
| |
| irq = irq_res->start; |
| |
| addr_reg = devm_platform_ioremap_resource(pdev, 1); |
| if (IS_ERR(addr_reg)) |
| return PTR_ERR(addr_reg); |
| |
| data = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| data_reg = devm_ioremap_resource(&pdev->dev, data); |
| if (IS_ERR(data_reg)) |
| return PTR_ERR(data_reg); |
| |
| /* allocate and initialize hcd */ |
| hcd = usb_create_hcd(&isp1362_hc_driver, &pdev->dev, dev_name(&pdev->dev)); |
| if (!hcd) |
| return -ENOMEM; |
| |
| hcd->rsrc_start = data->start; |
| isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| isp1362_hcd->data_reg = data_reg; |
| isp1362_hcd->addr_reg = addr_reg; |
| |
| isp1362_hcd->next_statechange = jiffies; |
| spin_lock_init(&isp1362_hcd->lock); |
| INIT_LIST_HEAD(&isp1362_hcd->async); |
| INIT_LIST_HEAD(&isp1362_hcd->periodic); |
| INIT_LIST_HEAD(&isp1362_hcd->isoc); |
| INIT_LIST_HEAD(&isp1362_hcd->remove_list); |
| isp1362_hcd->board = dev_get_platdata(&pdev->dev); |
| #if USE_PLATFORM_DELAY |
| if (!isp1362_hcd->board->delay) { |
| dev_err(hcd->self.controller, "No platform delay function given\n"); |
| retval = -ENODEV; |
| goto err; |
| } |
| #endif |
| |
| if (irq_res->flags & IORESOURCE_IRQ_HIGHEDGE) |
| irq_flags |= IRQF_TRIGGER_RISING; |
| if (irq_res->flags & IORESOURCE_IRQ_LOWEDGE) |
| irq_flags |= IRQF_TRIGGER_FALLING; |
| if (irq_res->flags & IORESOURCE_IRQ_HIGHLEVEL) |
| irq_flags |= IRQF_TRIGGER_HIGH; |
| if (irq_res->flags & IORESOURCE_IRQ_LOWLEVEL) |
| irq_flags |= IRQF_TRIGGER_LOW; |
| |
| retval = usb_add_hcd(hcd, irq, irq_flags | IRQF_SHARED); |
| if (retval != 0) |
| goto err; |
| device_wakeup_enable(hcd->self.controller); |
| |
| dev_info(&pdev->dev, "%s, irq %d\n", hcd->product_desc, irq); |
| |
| create_debug_file(isp1362_hcd); |
| |
| return 0; |
| |
| err: |
| usb_put_hcd(hcd); |
| |
| return retval; |
| } |
| |
| #ifdef CONFIG_PM |
| static int isp1362_suspend(struct platform_device *pdev, pm_message_t state) |
| { |
| struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| unsigned long flags; |
| int retval = 0; |
| |
| DBG(0, "%s: Suspending device\n", __func__); |
| |
| if (state.event == PM_EVENT_FREEZE) { |
| DBG(0, "%s: Suspending root hub\n", __func__); |
| retval = isp1362_bus_suspend(hcd); |
| } else { |
| DBG(0, "%s: Suspending RH ports\n", __func__); |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPS); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| } |
| if (retval == 0) |
| pdev->dev.power.power_state = state; |
| return retval; |
| } |
| |
| static int isp1362_resume(struct platform_device *pdev) |
| { |
| struct usb_hcd *hcd = platform_get_drvdata(pdev); |
| struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd); |
| unsigned long flags; |
| |
| DBG(0, "%s: Resuming\n", __func__); |
| |
| if (pdev->dev.power.power_state.event == PM_EVENT_SUSPEND) { |
| DBG(0, "%s: Resume RH ports\n", __func__); |
| spin_lock_irqsave(&isp1362_hcd->lock, flags); |
| isp1362_write_reg32(isp1362_hcd, HCRHSTATUS, RH_HS_LPSC); |
| spin_unlock_irqrestore(&isp1362_hcd->lock, flags); |
| return 0; |
| } |
| |
| pdev->dev.power.power_state = PMSG_ON; |
| |
| return isp1362_bus_resume(isp1362_hcd_to_hcd(isp1362_hcd)); |
| } |
| #else |
| #define isp1362_suspend NULL |
| #define isp1362_resume NULL |
| #endif |
| |
| static struct platform_driver isp1362_driver = { |
| .probe = isp1362_probe, |
| .remove = isp1362_remove, |
| |
| .suspend = isp1362_suspend, |
| .resume = isp1362_resume, |
| .driver = { |
| .name = hcd_name, |
| }, |
| }; |
| |
| module_platform_driver(isp1362_driver); |