| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Lothar Waßmann | 15272 | 98.44% | 3 | 9.09% |
| Tobias Klauser | 59 | 0.38% | 3 | 9.09% |
| Akinobu Mita | 36 | 0.23% | 2 | 6.06% |
| Greg Kroah-Hartman | 34 | 0.22% | 3 | 9.09% |
| Jiri Slaby | 32 | 0.21% | 1 | 3.03% |
| Sergei Shtylyov | 11 | 0.07% | 2 | 6.06% |
| Joe Perches | 10 | 0.06% | 2 | 6.06% |
| Bruno Morelli | 10 | 0.06% | 1 | 3.03% |
| Peter Chen | 9 | 0.06% | 1 | 3.03% |
| John Youn | 8 | 0.05% | 1 | 3.03% |
| Julia Lawall | 6 | 0.04% | 3 | 9.09% |
| Yangtao Li | 4 | 0.03% | 1 | 3.03% |
| Jingoo Han | 4 | 0.03% | 1 | 3.03% |
| Sage Sharp | 3 | 0.02% | 1 | 3.03% |
| Linus Torvalds | 3 | 0.02% | 1 | 3.03% |
| Eric Lescouet | 3 | 0.02% | 1 | 3.03% |
| Gustavo A. R. Silva | 3 | 0.02% | 2 | 6.06% |
| Yue haibing | 2 | 0.01% | 1 | 3.03% |
| Ken MacLeod | 2 | 0.01% | 1 | 3.03% |
| Al Viro | 2 | 0.01% | 1 | 3.03% |
| Alan Stern | 1 | 0.01% | 1 | 3.03% |
| Total | 15514 | 33 |
// 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, is_out); 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, is_out)) / 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) { isp1362_hcd->debug_file = 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(isp1362_hcd->debug_file); } /*-------------------------------------------------------------------------*/ 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);
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