+++ /dev/null
-// 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 <linux/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_lookup_and_remove("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__);
-
- timer_delete_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 void 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__);
-}
-
-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_reg = devm_platform_get_and_ioremap_resource(pdev, 0, &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);
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * ISP1362 HCD (Host Controller Driver) for USB.
- *
- * COPYRIGHT (C) by L. Wassmann <LW@KARO-electronics.de>
- */
-
-/* ------------------------------------------------------------------------- */
-
-#define MAX_ROOT_PORTS 2
-
-#define USE_32BIT 0
-
-/* These options are mutually exclusive */
-#define USE_PLATFORM_DELAY 0
-#define USE_NDELAY 0
-
-#define DUMMY_DELAY_ACCESS do {} while (0)
-
-/* ------------------------------------------------------------------------- */
-
-#define USB_RESET_WIDTH 50
-#define MAX_XFER_SIZE 1023
-
-/* Buffer sizes */
-#define ISP1362_BUF_SIZE 4096
-#define ISP1362_ISTL_BUFSIZE 512
-#define ISP1362_INTL_BLKSIZE 64
-#define ISP1362_INTL_BUFFERS 16
-#define ISP1362_ATL_BLKSIZE 64
-
-#define ISP1362_REG_WRITE_OFFSET 0x80
-
-#define REG_WIDTH_16 0x000
-#define REG_WIDTH_32 0x100
-#define REG_WIDTH_MASK 0x100
-#define REG_NO_MASK 0x0ff
-
-#ifdef ISP1362_DEBUG
-typedef const unsigned int isp1362_reg_t;
-
-#define REG_ACCESS_R 0x200
-#define REG_ACCESS_W 0x400
-#define REG_ACCESS_RW 0x600
-#define REG_ACCESS_MASK 0x600
-
-#define ISP1362_REG_NO(r) ((r) & REG_NO_MASK)
-
-#define ISP1362_REG(name, addr, width, rw) \
-static isp1362_reg_t ISP1362_REG_##name = ((addr) | (width) | (rw))
-
-#define REG_ACCESS_TEST(r) BUG_ON(((r) & ISP1362_REG_WRITE_OFFSET) && !((r) & REG_ACCESS_W))
-#define REG_WIDTH_TEST(r, w) BUG_ON(((r) & REG_WIDTH_MASK) != (w))
-#else
-typedef const unsigned char isp1362_reg_t;
-#define ISP1362_REG_NO(r) (r)
-
-#define ISP1362_REG(name, addr, width, rw) \
-static isp1362_reg_t __maybe_unused ISP1362_REG_##name = addr
-
-#define REG_ACCESS_TEST(r) do {} while (0)
-#define REG_WIDTH_TEST(r, w) do {} while (0)
-#endif
-
-/* OHCI compatible registers */
-/*
- * Note: Some of the ISP1362 'OHCI' registers implement only
- * a subset of the bits defined in the OHCI spec.
- *
- * Bitmasks for the individual bits of these registers are defined in "ohci.h"
- */
-ISP1362_REG(HCREVISION, 0x00, REG_WIDTH_32, REG_ACCESS_R);
-ISP1362_REG(HCCONTROL, 0x01, REG_WIDTH_32, REG_ACCESS_RW);
-ISP1362_REG(HCCMDSTAT, 0x02, REG_WIDTH_32, REG_ACCESS_RW);
-ISP1362_REG(HCINTSTAT, 0x03, REG_WIDTH_32, REG_ACCESS_RW);
-ISP1362_REG(HCINTENB, 0x04, REG_WIDTH_32, REG_ACCESS_RW);
-ISP1362_REG(HCINTDIS, 0x05, REG_WIDTH_32, REG_ACCESS_RW);
-ISP1362_REG(HCFMINTVL, 0x0d, REG_WIDTH_32, REG_ACCESS_RW);
-ISP1362_REG(HCFMREM, 0x0e, REG_WIDTH_32, REG_ACCESS_RW);
-ISP1362_REG(HCFMNUM, 0x0f, REG_WIDTH_32, REG_ACCESS_RW);
-ISP1362_REG(HCLSTHRESH, 0x11, REG_WIDTH_32, REG_ACCESS_RW);
-ISP1362_REG(HCRHDESCA, 0x12, REG_WIDTH_32, REG_ACCESS_RW);
-ISP1362_REG(HCRHDESCB, 0x13, REG_WIDTH_32, REG_ACCESS_RW);
-ISP1362_REG(HCRHSTATUS, 0x14, REG_WIDTH_32, REG_ACCESS_RW);
-ISP1362_REG(HCRHPORT1, 0x15, REG_WIDTH_32, REG_ACCESS_RW);
-ISP1362_REG(HCRHPORT2, 0x16, REG_WIDTH_32, REG_ACCESS_RW);
-
-/* Philips ISP1362 specific registers */
-ISP1362_REG(HCHWCFG, 0x20, REG_WIDTH_16, REG_ACCESS_RW);
-#define HCHWCFG_DISABLE_SUSPEND (1 << 15)
-#define HCHWCFG_GLOBAL_PWRDOWN (1 << 14)
-#define HCHWCFG_PULLDOWN_DS2 (1 << 13)
-#define HCHWCFG_PULLDOWN_DS1 (1 << 12)
-#define HCHWCFG_CLKNOTSTOP (1 << 11)
-#define HCHWCFG_ANALOG_OC (1 << 10)
-#define HCHWCFG_ONEINT (1 << 9)
-#define HCHWCFG_DACK_MODE (1 << 8)
-#define HCHWCFG_ONEDMA (1 << 7)
-#define HCHWCFG_DACK_POL (1 << 6)
-#define HCHWCFG_DREQ_POL (1 << 5)
-#define HCHWCFG_DBWIDTH_MASK (0x03 << 3)
-#define HCHWCFG_DBWIDTH(n) (((n) << 3) & HCHWCFG_DBWIDTH_MASK)
-#define HCHWCFG_INT_POL (1 << 2)
-#define HCHWCFG_INT_TRIGGER (1 << 1)
-#define HCHWCFG_INT_ENABLE (1 << 0)
-
-ISP1362_REG(HCDMACFG, 0x21, REG_WIDTH_16, REG_ACCESS_RW);
-#define HCDMACFG_CTR_ENABLE (1 << 7)
-#define HCDMACFG_BURST_LEN_MASK (0x03 << 5)
-#define HCDMACFG_BURST_LEN(n) (((n) << 5) & HCDMACFG_BURST_LEN_MASK)
-#define HCDMACFG_BURST_LEN_1 HCDMACFG_BURST_LEN(0)
-#define HCDMACFG_BURST_LEN_4 HCDMACFG_BURST_LEN(1)
-#define HCDMACFG_BURST_LEN_8 HCDMACFG_BURST_LEN(2)
-#define HCDMACFG_DMA_ENABLE (1 << 4)
-#define HCDMACFG_BUF_TYPE_MASK (0x07 << 1)
-#define HCDMACFG_BUF_TYPE(n) (((n) << 1) & HCDMACFG_BUF_TYPE_MASK)
-#define HCDMACFG_BUF_ISTL0 HCDMACFG_BUF_TYPE(0)
-#define HCDMACFG_BUF_ISTL1 HCDMACFG_BUF_TYPE(1)
-#define HCDMACFG_BUF_INTL HCDMACFG_BUF_TYPE(2)
-#define HCDMACFG_BUF_ATL HCDMACFG_BUF_TYPE(3)
-#define HCDMACFG_BUF_DIRECT HCDMACFG_BUF_TYPE(4)
-#define HCDMACFG_DMA_RW_SELECT (1 << 0)
-
-ISP1362_REG(HCXFERCTR, 0x22, REG_WIDTH_16, REG_ACCESS_RW);
-
-ISP1362_REG(HCuPINT, 0x24, REG_WIDTH_16, REG_ACCESS_RW);
-#define HCuPINT_SOF (1 << 0)
-#define HCuPINT_ISTL0 (1 << 1)
-#define HCuPINT_ISTL1 (1 << 2)
-#define HCuPINT_EOT (1 << 3)
-#define HCuPINT_OPR (1 << 4)
-#define HCuPINT_SUSP (1 << 5)
-#define HCuPINT_CLKRDY (1 << 6)
-#define HCuPINT_INTL (1 << 7)
-#define HCuPINT_ATL (1 << 8)
-#define HCuPINT_OTG (1 << 9)
-
-ISP1362_REG(HCuPINTENB, 0x25, REG_WIDTH_16, REG_ACCESS_RW);
-/* same bit definitions apply as for HCuPINT */
-
-ISP1362_REG(HCCHIPID, 0x27, REG_WIDTH_16, REG_ACCESS_R);
-#define HCCHIPID_MASK 0xff00
-#define HCCHIPID_MAGIC 0x3600
-
-ISP1362_REG(HCSCRATCH, 0x28, REG_WIDTH_16, REG_ACCESS_RW);
-
-ISP1362_REG(HCSWRES, 0x29, REG_WIDTH_16, REG_ACCESS_W);
-#define HCSWRES_MAGIC 0x00f6
-
-ISP1362_REG(HCBUFSTAT, 0x2c, REG_WIDTH_16, REG_ACCESS_RW);
-#define HCBUFSTAT_ISTL0_FULL (1 << 0)
-#define HCBUFSTAT_ISTL1_FULL (1 << 1)
-#define HCBUFSTAT_INTL_ACTIVE (1 << 2)
-#define HCBUFSTAT_ATL_ACTIVE (1 << 3)
-#define HCBUFSTAT_RESET_HWPP (1 << 4)
-#define HCBUFSTAT_ISTL0_ACTIVE (1 << 5)
-#define HCBUFSTAT_ISTL1_ACTIVE (1 << 6)
-#define HCBUFSTAT_ISTL0_DONE (1 << 8)
-#define HCBUFSTAT_ISTL1_DONE (1 << 9)
-#define HCBUFSTAT_PAIRED_PTDPP (1 << 10)
-
-ISP1362_REG(HCDIRADDR, 0x32, REG_WIDTH_32, REG_ACCESS_RW);
-#define HCDIRADDR_ADDR_MASK 0x0000ffff
-#define HCDIRADDR_ADDR(n) (((n) << 0) & HCDIRADDR_ADDR_MASK)
-#define HCDIRADDR_COUNT_MASK 0xffff0000
-#define HCDIRADDR_COUNT(n) (((n) << 16) & HCDIRADDR_COUNT_MASK)
-ISP1362_REG(HCDIRDATA, 0x45, REG_WIDTH_16, REG_ACCESS_RW);
-
-ISP1362_REG(HCISTLBUFSZ, 0x30, REG_WIDTH_16, REG_ACCESS_RW);
-ISP1362_REG(HCISTL0PORT, 0x40, REG_WIDTH_16, REG_ACCESS_RW);
-ISP1362_REG(HCISTL1PORT, 0x42, REG_WIDTH_16, REG_ACCESS_RW);
-ISP1362_REG(HCISTLRATE, 0x47, REG_WIDTH_16, REG_ACCESS_RW);
-
-ISP1362_REG(HCINTLBUFSZ, 0x33, REG_WIDTH_16, REG_ACCESS_RW);
-ISP1362_REG(HCINTLPORT, 0x43, REG_WIDTH_16, REG_ACCESS_RW);
-ISP1362_REG(HCINTLBLKSZ, 0x53, REG_WIDTH_16, REG_ACCESS_RW);
-ISP1362_REG(HCINTLDONE, 0x17, REG_WIDTH_32, REG_ACCESS_R);
-ISP1362_REG(HCINTLSKIP, 0x18, REG_WIDTH_32, REG_ACCESS_RW);
-ISP1362_REG(HCINTLLAST, 0x19, REG_WIDTH_32, REG_ACCESS_RW);
-ISP1362_REG(HCINTLCURR, 0x1a, REG_WIDTH_16, REG_ACCESS_R);
-
-ISP1362_REG(HCATLBUFSZ, 0x34, REG_WIDTH_16, REG_ACCESS_RW);
-ISP1362_REG(HCATLPORT, 0x44, REG_WIDTH_16, REG_ACCESS_RW);
-ISP1362_REG(HCATLBLKSZ, 0x54, REG_WIDTH_16, REG_ACCESS_RW);
-ISP1362_REG(HCATLDONE, 0x1b, REG_WIDTH_32, REG_ACCESS_R);
-ISP1362_REG(HCATLSKIP, 0x1c, REG_WIDTH_32, REG_ACCESS_RW);
-ISP1362_REG(HCATLLAST, 0x1d, REG_WIDTH_32, REG_ACCESS_RW);
-ISP1362_REG(HCATLCURR, 0x1e, REG_WIDTH_16, REG_ACCESS_R);
-
-ISP1362_REG(HCATLDTC, 0x51, REG_WIDTH_16, REG_ACCESS_RW);
-ISP1362_REG(HCATLDTCTO, 0x52, REG_WIDTH_16, REG_ACCESS_RW);
-
-
-ISP1362_REG(OTGCONTROL, 0x62, REG_WIDTH_16, REG_ACCESS_RW);
-ISP1362_REG(OTGSTATUS, 0x67, REG_WIDTH_16, REG_ACCESS_R);
-ISP1362_REG(OTGINT, 0x68, REG_WIDTH_16, REG_ACCESS_RW);
-ISP1362_REG(OTGINTENB, 0x69, REG_WIDTH_16, REG_ACCESS_RW);
-ISP1362_REG(OTGTIMER, 0x6A, REG_WIDTH_16, REG_ACCESS_RW);
-ISP1362_REG(OTGALTTMR, 0x6C, REG_WIDTH_16, REG_ACCESS_RW);
-
-/* Philips transfer descriptor, cpu-endian */
-struct ptd {
- u16 count;
-#define PTD_COUNT_MSK (0x3ff << 0)
-#define PTD_TOGGLE_MSK (1 << 10)
-#define PTD_ACTIVE_MSK (1 << 11)
-#define PTD_CC_MSK (0xf << 12)
- u16 mps;
-#define PTD_MPS_MSK (0x3ff << 0)
-#define PTD_SPD_MSK (1 << 10)
-#define PTD_LAST_MSK (1 << 11)
-#define PTD_EP_MSK (0xf << 12)
- u16 len;
-#define PTD_LEN_MSK (0x3ff << 0)
-#define PTD_DIR_MSK (3 << 10)
-#define PTD_DIR_SETUP (0)
-#define PTD_DIR_OUT (1)
-#define PTD_DIR_IN (2)
- u16 faddr;
-#define PTD_FA_MSK (0x7f << 0)
-/* PTD Byte 7: [StartingFrame (if ISO PTD) | StartingFrame[0..4], PollingRate[0..2] (if INT PTD)] */
-#define PTD_SF_ISO_MSK (0xff << 8)
-#define PTD_SF_INT_MSK (0x1f << 8)
-#define PTD_PR_MSK (0x07 << 13)
-} __attribute__ ((packed, aligned(2)));
-#define PTD_HEADER_SIZE sizeof(struct ptd)
-
-/* ------------------------------------------------------------------------- */
-/* Copied from ohci.h: */
-/*
- * Hardware transfer status codes -- CC from PTD
- */
-#define PTD_CC_NOERROR 0x00
-#define PTD_CC_CRC 0x01
-#define PTD_CC_BITSTUFFING 0x02
-#define PTD_CC_DATATOGGLEM 0x03
-#define PTD_CC_STALL 0x04
-#define PTD_DEVNOTRESP 0x05
-#define PTD_PIDCHECKFAIL 0x06
-#define PTD_UNEXPECTEDPID 0x07
-#define PTD_DATAOVERRUN 0x08
-#define PTD_DATAUNDERRUN 0x09
- /* 0x0A, 0x0B reserved for hardware */
-#define PTD_BUFFEROVERRUN 0x0C
-#define PTD_BUFFERUNDERRUN 0x0D
- /* 0x0E, 0x0F reserved for HCD */
-#define PTD_NOTACCESSED 0x0F
-
-
-/* map OHCI TD status codes (CC) to errno values */
-static const int cc_to_error[16] = {
- /* No Error */ 0,
- /* CRC Error */ -EILSEQ,
- /* Bit Stuff */ -EPROTO,
- /* Data Togg */ -EILSEQ,
- /* Stall */ -EPIPE,
- /* DevNotResp */ -ETIMEDOUT,
- /* PIDCheck */ -EPROTO,
- /* UnExpPID */ -EPROTO,
- /* DataOver */ -EOVERFLOW,
- /* DataUnder */ -EREMOTEIO,
- /* (for hw) */ -EIO,
- /* (for hw) */ -EIO,
- /* BufferOver */ -ECOMM,
- /* BuffUnder */ -ENOSR,
- /* (for HCD) */ -EALREADY,
- /* (for HCD) */ -EALREADY
-};
-
-
-/*
- * HcControl (control) register masks
- */
-#define OHCI_CTRL_HCFS (3 << 6) /* host controller functional state */
-#define OHCI_CTRL_RWC (1 << 9) /* remote wakeup connected */
-#define OHCI_CTRL_RWE (1 << 10) /* remote wakeup enable */
-
-/* pre-shifted values for HCFS */
-# define OHCI_USB_RESET (0 << 6)
-# define OHCI_USB_RESUME (1 << 6)
-# define OHCI_USB_OPER (2 << 6)
-# define OHCI_USB_SUSPEND (3 << 6)
-
-/*
- * HcCommandStatus (cmdstatus) register masks
- */
-#define OHCI_HCR (1 << 0) /* host controller reset */
-#define OHCI_SOC (3 << 16) /* scheduling overrun count */
-
-/*
- * masks used with interrupt registers:
- * HcInterruptStatus (intrstatus)
- * HcInterruptEnable (intrenable)
- * HcInterruptDisable (intrdisable)
- */
-#define OHCI_INTR_SO (1 << 0) /* scheduling overrun */
-#define OHCI_INTR_WDH (1 << 1) /* writeback of done_head */
-#define OHCI_INTR_SF (1 << 2) /* start frame */
-#define OHCI_INTR_RD (1 << 3) /* resume detect */
-#define OHCI_INTR_UE (1 << 4) /* unrecoverable error */
-#define OHCI_INTR_FNO (1 << 5) /* frame number overflow */
-#define OHCI_INTR_RHSC (1 << 6) /* root hub status change */
-#define OHCI_INTR_OC (1 << 30) /* ownership change */
-#define OHCI_INTR_MIE (1 << 31) /* master interrupt enable */
-
-/* roothub.portstatus [i] bits */
-#define RH_PS_CCS 0x00000001 /* current connect status */
-#define RH_PS_PES 0x00000002 /* port enable status*/
-#define RH_PS_PSS 0x00000004 /* port suspend status */
-#define RH_PS_POCI 0x00000008 /* port over current indicator */
-#define RH_PS_PRS 0x00000010 /* port reset status */
-#define RH_PS_PPS 0x00000100 /* port power status */
-#define RH_PS_LSDA 0x00000200 /* low speed device attached */
-#define RH_PS_CSC 0x00010000 /* connect status change */
-#define RH_PS_PESC 0x00020000 /* port enable status change */
-#define RH_PS_PSSC 0x00040000 /* port suspend status change */
-#define RH_PS_OCIC 0x00080000 /* over current indicator change */
-#define RH_PS_PRSC 0x00100000 /* port reset status change */
-
-/* roothub.status bits */
-#define RH_HS_LPS 0x00000001 /* local power status */
-#define RH_HS_OCI 0x00000002 /* over current indicator */
-#define RH_HS_DRWE 0x00008000 /* device remote wakeup enable */
-#define RH_HS_LPSC 0x00010000 /* local power status change */
-#define RH_HS_OCIC 0x00020000 /* over current indicator change */
-#define RH_HS_CRWE 0x80000000 /* clear remote wakeup enable */
-
-/* roothub.b masks */
-#define RH_B_DR 0x0000ffff /* device removable flags */
-#define RH_B_PPCM 0xffff0000 /* port power control mask */
-
-/* roothub.a masks */
-#define RH_A_NDP (0xff << 0) /* number of downstream ports */
-#define RH_A_PSM (1 << 8) /* power switching mode */
-#define RH_A_NPS (1 << 9) /* no power switching */
-#define RH_A_DT (1 << 10) /* device type (mbz) */
-#define RH_A_OCPM (1 << 11) /* over current protection mode */
-#define RH_A_NOCP (1 << 12) /* no over current protection */
-#define RH_A_POTPGT (0xff << 24) /* power on to power good time */
-
-#define FI 0x2edf /* 12000 bits per frame (-1) */
-#define FSMP(fi) (0x7fff & ((6 * ((fi) - 210)) / 7))
-#define LSTHRESH 0x628 /* lowspeed bit threshold */
-
-/* ------------------------------------------------------------------------- */
-
-/* PTD accessor macros. */
-#define PTD_GET_COUNT(p) (((p)->count & PTD_COUNT_MSK) >> 0)
-#define PTD_COUNT(v) (((v) << 0) & PTD_COUNT_MSK)
-#define PTD_GET_TOGGLE(p) (((p)->count & PTD_TOGGLE_MSK) >> 10)
-#define PTD_TOGGLE(v) (((v) << 10) & PTD_TOGGLE_MSK)
-#define PTD_GET_ACTIVE(p) (((p)->count & PTD_ACTIVE_MSK) >> 11)
-#define PTD_ACTIVE(v) (((v) << 11) & PTD_ACTIVE_MSK)
-#define PTD_GET_CC(p) (((p)->count & PTD_CC_MSK) >> 12)
-#define PTD_CC(v) (((v) << 12) & PTD_CC_MSK)
-#define PTD_GET_MPS(p) (((p)->mps & PTD_MPS_MSK) >> 0)
-#define PTD_MPS(v) (((v) << 0) & PTD_MPS_MSK)
-#define PTD_GET_SPD(p) (((p)->mps & PTD_SPD_MSK) >> 10)
-#define PTD_SPD(v) (((v) << 10) & PTD_SPD_MSK)
-#define PTD_GET_LAST(p) (((p)->mps & PTD_LAST_MSK) >> 11)
-#define PTD_LAST(v) (((v) << 11) & PTD_LAST_MSK)
-#define PTD_GET_EP(p) (((p)->mps & PTD_EP_MSK) >> 12)
-#define PTD_EP(v) (((v) << 12) & PTD_EP_MSK)
-#define PTD_GET_LEN(p) (((p)->len & PTD_LEN_MSK) >> 0)
-#define PTD_LEN(v) (((v) << 0) & PTD_LEN_MSK)
-#define PTD_GET_DIR(p) (((p)->len & PTD_DIR_MSK) >> 10)
-#define PTD_DIR(v) (((v) << 10) & PTD_DIR_MSK)
-#define PTD_GET_FA(p) (((p)->faddr & PTD_FA_MSK) >> 0)
-#define PTD_FA(v) (((v) << 0) & PTD_FA_MSK)
-#define PTD_GET_SF_INT(p) (((p)->faddr & PTD_SF_INT_MSK) >> 8)
-#define PTD_SF_INT(v) (((v) << 8) & PTD_SF_INT_MSK)
-#define PTD_GET_SF_ISO(p) (((p)->faddr & PTD_SF_ISO_MSK) >> 8)
-#define PTD_SF_ISO(v) (((v) << 8) & PTD_SF_ISO_MSK)
-#define PTD_GET_PR(p) (((p)->faddr & PTD_PR_MSK) >> 13)
-#define PTD_PR(v) (((v) << 13) & PTD_PR_MSK)
-
-#define LOG2_PERIODIC_SIZE 5 /* arbitrary; this matches OHCI */
-#define PERIODIC_SIZE (1 << LOG2_PERIODIC_SIZE)
-
-struct isp1362_ep {
- struct usb_host_endpoint *hep;
- struct usb_device *udev;
-
- /* philips transfer descriptor */
- struct ptd ptd;
-
- u8 maxpacket;
- u8 epnum;
- u8 nextpid;
- u16 error_count;
- u16 length; /* of current packet */
- s16 ptd_offset; /* buffer offset in ISP1362 where
- PTD has been stored
- (for access thru HCDIRDATA) */
- int ptd_index;
- int num_ptds;
- void *data; /* to databuf */
- /* queue of active EPs (the ones transmitted to the chip) */
- struct list_head active;
-
- /* periodic schedule */
- u8 branch;
- u16 interval;
- u16 load;
- u16 last_iso;
-
- /* async schedule */
- struct list_head schedule; /* list of all EPs that need processing */
- struct list_head remove_list;
- int num_req;
-};
-
-struct isp1362_ep_queue {
- struct list_head active; /* list of PTDs currently processed by HC */
- atomic_t finishing;
- unsigned long buf_map;
- unsigned long skip_map;
- int free_ptd;
- u16 buf_start;
- u16 buf_size;
- u16 blk_size; /* PTD buffer block size for ATL and INTL */
- u8 buf_count;
- u8 buf_avail;
- char name[16];
-
- /* for statistical tracking */
- u8 stat_maxptds; /* Max # of ptds seen simultaneously in fifo */
- u8 ptd_count; /* number of ptds submitted to this queue */
-};
-
-struct isp1362_hcd {
- spinlock_t lock;
- void __iomem *addr_reg;
- void __iomem *data_reg;
-
- struct isp1362_platform_data *board;
-
- unsigned long stat1, stat2, stat4, stat8, stat16;
-
- /* HC registers */
- u32 intenb; /* "OHCI" interrupts */
- u16 irqenb; /* uP interrupts */
-
- /* Root hub registers */
- u32 rhdesca;
- u32 rhdescb;
- u32 rhstatus;
- u32 rhport[MAX_ROOT_PORTS];
- unsigned long next_statechange;
-
- /* HC control reg shadow copy */
- u32 hc_control;
-
- /* async schedule: control, bulk */
- struct list_head async;
-
- /* periodic schedule: int */
- u16 load[PERIODIC_SIZE];
- struct list_head periodic;
- u16 fmindex;
-
- /* periodic schedule: isochronous */
- struct list_head isoc;
- unsigned int istl_flip:1;
- unsigned int irq_active:1;
-
- /* Schedules for the current frame */
- struct isp1362_ep_queue atl_queue;
- struct isp1362_ep_queue intl_queue;
- struct isp1362_ep_queue istl_queue[2];
-
- /* list of PTDs retrieved from HC */
- struct list_head remove_list;
- enum {
- ISP1362_INT_SOF,
- ISP1362_INT_ISTL0,
- ISP1362_INT_ISTL1,
- ISP1362_INT_EOT,
- ISP1362_INT_OPR,
- ISP1362_INT_SUSP,
- ISP1362_INT_CLKRDY,
- ISP1362_INT_INTL,
- ISP1362_INT_ATL,
- ISP1362_INT_OTG,
- NUM_ISP1362_IRQS
- } IRQ_NAMES;
- unsigned int irq_stat[NUM_ISP1362_IRQS];
- int req_serial;
-};
-
-static inline const char *ISP1362_INT_NAME(int n)
-{
- switch (n) {
- case ISP1362_INT_SOF: return "SOF";
- case ISP1362_INT_ISTL0: return "ISTL0";
- case ISP1362_INT_ISTL1: return "ISTL1";
- case ISP1362_INT_EOT: return "EOT";
- case ISP1362_INT_OPR: return "OPR";
- case ISP1362_INT_SUSP: return "SUSP";
- case ISP1362_INT_CLKRDY: return "CLKRDY";
- case ISP1362_INT_INTL: return "INTL";
- case ISP1362_INT_ATL: return "ATL";
- case ISP1362_INT_OTG: return "OTG";
- default: return "unknown";
- }
-}
-
-static inline void ALIGNSTAT(struct isp1362_hcd *isp1362_hcd, void *ptr)
-{
- unsigned long p = (unsigned long)ptr;
- if (!(p & 0xf))
- isp1362_hcd->stat16++;
- else if (!(p & 0x7))
- isp1362_hcd->stat8++;
- else if (!(p & 0x3))
- isp1362_hcd->stat4++;
- else if (!(p & 0x1))
- isp1362_hcd->stat2++;
- else
- isp1362_hcd->stat1++;
-}
-
-static inline struct isp1362_hcd *hcd_to_isp1362_hcd(struct usb_hcd *hcd)
-{
- return (struct isp1362_hcd *) (hcd->hcd_priv);
-}
-
-static inline struct usb_hcd *isp1362_hcd_to_hcd(struct isp1362_hcd *isp1362_hcd)
-{
- return container_of((void *)isp1362_hcd, struct usb_hcd, hcd_priv);
-}
-
-#define frame_before(f1, f2) ((s16)((u16)f1 - (u16)f2) < 0)
-
-/*
- * ISP1362 HW Interface
- */
-
-#define DBG(level, fmt...) \
- do { \
- if (dbg_level > level) \
- pr_debug(fmt); \
- } while (0)
-
-#ifdef VERBOSE
-# define VDBG(fmt...) DBG(3, fmt)
-#else
-# define VDBG(fmt...) do {} while (0)
-#endif
-
-#ifdef REGISTERS
-# define RDBG(fmt...) DBG(1, fmt)
-#else
-# define RDBG(fmt...) do {} while (0)
-#endif
-
-#ifdef URB_TRACE
-#define URB_DBG(fmt...) DBG(0, fmt)
-#else
-#define URB_DBG(fmt...) do {} while (0)
-#endif
-
-
-#if USE_PLATFORM_DELAY
-#if USE_NDELAY
-#error USE_PLATFORM_DELAY and USE_NDELAY defined simultaneously.
-#endif
-#define isp1362_delay(h, d) (h)->board->delay(isp1362_hcd_to_hcd(h)->self.controller, d)
-#elif USE_NDELAY
-#define isp1362_delay(h, d) ndelay(d)
-#else
-#define isp1362_delay(h, d) do {} while (0)
-#endif
-
-#define get_urb(ep) ({ \
- BUG_ON(list_empty(&ep->hep->urb_list)); \
- container_of(ep->hep->urb_list.next, struct urb, urb_list); \
-})
-
-/* basic access functions for ISP1362 chip registers */
-/* NOTE: The contents of the address pointer register cannot be read back! The driver must ensure,
- * that all register accesses are performed with interrupts disabled, since the interrupt
- * handler has no way of restoring the previous state.
- */
-static void isp1362_write_addr(struct isp1362_hcd *isp1362_hcd, isp1362_reg_t reg)
-{
- REG_ACCESS_TEST(reg);
- DUMMY_DELAY_ACCESS;
- writew(ISP1362_REG_NO(reg), isp1362_hcd->addr_reg);
- DUMMY_DELAY_ACCESS;
- isp1362_delay(isp1362_hcd, 1);
-}
-
-static void isp1362_write_data16(struct isp1362_hcd *isp1362_hcd, u16 val)
-{
- DUMMY_DELAY_ACCESS;
- writew(val, isp1362_hcd->data_reg);
-}
-
-static u16 isp1362_read_data16(struct isp1362_hcd *isp1362_hcd)
-{
- u16 val;
-
- DUMMY_DELAY_ACCESS;
- val = readw(isp1362_hcd->data_reg);
-
- return val;
-}
-
-static void isp1362_write_data32(struct isp1362_hcd *isp1362_hcd, u32 val)
-{
-#if USE_32BIT
- DUMMY_DELAY_ACCESS;
- writel(val, isp1362_hcd->data_reg);
-#else
- DUMMY_DELAY_ACCESS;
- writew((u16)val, isp1362_hcd->data_reg);
- DUMMY_DELAY_ACCESS;
- writew(val >> 16, isp1362_hcd->data_reg);
-#endif
-}
-
-static u32 isp1362_read_data32(struct isp1362_hcd *isp1362_hcd)
-{
- u32 val;
-
-#if USE_32BIT
- DUMMY_DELAY_ACCESS;
- val = readl(isp1362_hcd->data_reg);
-#else
- DUMMY_DELAY_ACCESS;
- val = (u32)readw(isp1362_hcd->data_reg);
- DUMMY_DELAY_ACCESS;
- val |= (u32)readw(isp1362_hcd->data_reg) << 16;
-#endif
- return val;
-}
-
-/* use readsw/writesw to access the fifo whenever possible */
-/* assume HCDIRDATA or XFERCTR & addr_reg have been set up */
-static void isp1362_read_fifo(struct isp1362_hcd *isp1362_hcd, void *buf, u16 len)
-{
- u8 *dp = buf;
- u16 data;
-
- if (!len)
- return;
-
- RDBG("%s: Reading %d byte from fifo to mem @ %p\n", __func__, len, buf);
-#if USE_32BIT
- if (len >= 4) {
- RDBG("%s: Using readsl for %d dwords\n", __func__, len >> 2);
- readsl(isp1362_hcd->data_reg, dp, len >> 2);
- dp += len & ~3;
- len &= 3;
- }
-#endif
- if (len >= 2) {
- RDBG("%s: Using readsw for %d words\n", __func__, len >> 1);
- insw((unsigned long)isp1362_hcd->data_reg, dp, len >> 1);
- dp += len & ~1;
- len &= 1;
- }
-
- BUG_ON(len & ~1);
- if (len > 0) {
- data = isp1362_read_data16(isp1362_hcd);
- RDBG("%s: Reading trailing byte %02x to mem @ %08x\n", __func__,
- (u8)data, (u32)dp);
- *dp = (u8)data;
- }
-}
-
-static void isp1362_write_fifo(struct isp1362_hcd *isp1362_hcd, void *buf, u16 len)
-{
- u8 *dp = buf;
- u16 data;
-
- if (!len)
- return;
-
- if ((unsigned long)dp & 0x1) {
- /* not aligned */
- for (; len > 1; len -= 2) {
- data = *dp++;
- data |= *dp++ << 8;
- isp1362_write_data16(isp1362_hcd, data);
- }
- if (len)
- isp1362_write_data16(isp1362_hcd, *dp);
- return;
- }
-
- RDBG("%s: Writing %d byte to fifo from memory @%p\n", __func__, len, buf);
-#if USE_32BIT
- if (len >= 4) {
- RDBG("%s: Using writesl for %d dwords\n", __func__, len >> 2);
- writesl(isp1362_hcd->data_reg, dp, len >> 2);
- dp += len & ~3;
- len &= 3;
- }
-#endif
- if (len >= 2) {
- RDBG("%s: Using writesw for %d words\n", __func__, len >> 1);
- outsw((unsigned long)isp1362_hcd->data_reg, dp, len >> 1);
- dp += len & ~1;
- len &= 1;
- }
-
- BUG_ON(len & ~1);
- if (len > 0) {
- /* finally write any trailing byte; we don't need to care
- * about the high byte of the last word written
- */
- data = (u16)*dp;
- RDBG("%s: Sending trailing byte %02x from mem @ %08x\n", __func__,
- data, (u32)dp);
- isp1362_write_data16(isp1362_hcd, data);
- }
-}
-
-#define isp1362_read_reg16(d, r) ({ \
- u16 __v; \
- REG_WIDTH_TEST(ISP1362_REG_##r, REG_WIDTH_16); \
- isp1362_write_addr(d, ISP1362_REG_##r); \
- __v = isp1362_read_data16(d); \
- RDBG("%s: Read %04x from %s[%02x]\n", __func__, __v, #r, \
- ISP1362_REG_NO(ISP1362_REG_##r)); \
- __v; \
-})
-
-#define isp1362_read_reg32(d, r) ({ \
- u32 __v; \
- REG_WIDTH_TEST(ISP1362_REG_##r, REG_WIDTH_32); \
- isp1362_write_addr(d, ISP1362_REG_##r); \
- __v = isp1362_read_data32(d); \
- RDBG("%s: Read %08x from %s[%02x]\n", __func__, __v, #r, \
- ISP1362_REG_NO(ISP1362_REG_##r)); \
- __v; \
-})
-
-#define isp1362_write_reg16(d, r, v) { \
- REG_WIDTH_TEST(ISP1362_REG_##r, REG_WIDTH_16); \
- isp1362_write_addr(d, (ISP1362_REG_##r) | ISP1362_REG_WRITE_OFFSET); \
- isp1362_write_data16(d, (u16)(v)); \
- RDBG("%s: Wrote %04x to %s[%02x]\n", __func__, (u16)(v), #r, \
- ISP1362_REG_NO(ISP1362_REG_##r)); \
-}
-
-#define isp1362_write_reg32(d, r, v) { \
- REG_WIDTH_TEST(ISP1362_REG_##r, REG_WIDTH_32); \
- isp1362_write_addr(d, (ISP1362_REG_##r) | ISP1362_REG_WRITE_OFFSET); \
- isp1362_write_data32(d, (u32)(v)); \
- RDBG("%s: Wrote %08x to %s[%02x]\n", __func__, (u32)(v), #r, \
- ISP1362_REG_NO(ISP1362_REG_##r)); \
-}
-
-#define isp1362_set_mask16(d, r, m) { \
- u16 __v; \
- __v = isp1362_read_reg16(d, r); \
- if ((__v | m) != __v) \
- isp1362_write_reg16(d, r, __v | m); \
-}
-
-#define isp1362_clr_mask16(d, r, m) { \
- u16 __v; \
- __v = isp1362_read_reg16(d, r); \
- if ((__v & ~m) != __v) \
- isp1362_write_reg16(d, r, __v & ~m); \
-}
-
-#define isp1362_set_mask32(d, r, m) { \
- u32 __v; \
- __v = isp1362_read_reg32(d, r); \
- if ((__v | m) != __v) \
- isp1362_write_reg32(d, r, __v | m); \
-}
-
-#define isp1362_clr_mask32(d, r, m) { \
- u32 __v; \
- __v = isp1362_read_reg32(d, r); \
- if ((__v & ~m) != __v) \
- isp1362_write_reg32(d, r, __v & ~m); \
-}
-
-#define isp1362_show_reg(d, r) { \
- if ((ISP1362_REG_##r & REG_WIDTH_MASK) == REG_WIDTH_32) \
- DBG(0, "%-12s[%02x]: %08x\n", #r, \
- ISP1362_REG_NO(ISP1362_REG_##r), isp1362_read_reg32(d, r)); \
- else \
- DBG(0, "%-12s[%02x]: %04x\n", #r, \
- ISP1362_REG_NO(ISP1362_REG_##r), isp1362_read_reg16(d, r)); \
-}
-
-static void isp1362_write_diraddr(struct isp1362_hcd *isp1362_hcd, u16 offset, u16 len)
-{
- len = (len + 1) & ~1;
-
- isp1362_clr_mask16(isp1362_hcd, HCDMACFG, HCDMACFG_CTR_ENABLE);
- isp1362_write_reg32(isp1362_hcd, HCDIRADDR,
- HCDIRADDR_ADDR(offset) | HCDIRADDR_COUNT(len));
-}
-
-static void isp1362_read_buffer(struct isp1362_hcd *isp1362_hcd, void *buf, u16 offset, int len)
-{
- isp1362_write_diraddr(isp1362_hcd, offset, len);
-
- DBG(3, "%s: Reading %d byte from buffer @%04x to memory @ %p\n",
- __func__, len, offset, buf);
-
- isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_EOT);
-
- isp1362_write_addr(isp1362_hcd, ISP1362_REG_HCDIRDATA);
-
- isp1362_read_fifo(isp1362_hcd, buf, len);
- isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_EOT);
-}
-
-static void isp1362_write_buffer(struct isp1362_hcd *isp1362_hcd, void *buf, u16 offset, int len)
-{
- isp1362_write_diraddr(isp1362_hcd, offset, len);
-
- DBG(3, "%s: Writing %d byte to buffer @%04x from memory @ %p\n",
- __func__, len, offset, buf);
-
- isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_EOT);
-
- isp1362_write_addr(isp1362_hcd, ISP1362_REG_HCDIRDATA | ISP1362_REG_WRITE_OFFSET);
- isp1362_write_fifo(isp1362_hcd, buf, len);
-
- isp1362_write_reg16(isp1362_hcd, HCuPINT, HCuPINT_EOT);
-}
-
-static void __attribute__((unused)) dump_data(char *buf, int len)
-{
- if (dbg_level > 0) {
- int k;
- int lf = 0;
-
- for (k = 0; k < len; ++k) {
- if (!lf)
- DBG(0, "%04x:", k);
- printk(" %02x", ((u8 *) buf)[k]);
- lf = 1;
- if (!k)
- continue;
- if (k % 16 == 15) {
- printk("\n");
- lf = 0;
- continue;
- }
- if (k % 8 == 7)
- printk(" ");
- if (k % 4 == 3)
- printk(" ");
- }
- if (lf)
- printk("\n");
- }
-}
-
-#if defined(PTD_TRACE)
-
-static void dump_ptd(struct ptd *ptd)
-{
- DBG(0, "EP %p: CC=%x EP=%d DIR=%x CNT=%d LEN=%d MPS=%d TGL=%x ACT=%x FA=%d SPD=%x SF=%x PR=%x LST=%x\n",
- container_of(ptd, struct isp1362_ep, ptd),
- PTD_GET_CC(ptd), PTD_GET_EP(ptd), PTD_GET_DIR(ptd),
- PTD_GET_COUNT(ptd), PTD_GET_LEN(ptd), PTD_GET_MPS(ptd),
- PTD_GET_TOGGLE(ptd), PTD_GET_ACTIVE(ptd), PTD_GET_FA(ptd),
- PTD_GET_SPD(ptd), PTD_GET_SF_INT(ptd), PTD_GET_PR(ptd), PTD_GET_LAST(ptd));
- DBG(0, " %04x %04x %04x %04x\n", ptd->count, ptd->mps, ptd->len, ptd->faddr);
-}
-
-static void dump_ptd_out_data(struct ptd *ptd, u8 *buf)
-{
- if (dbg_level > 0) {
- if (PTD_GET_DIR(ptd) != PTD_DIR_IN && PTD_GET_LEN(ptd)) {
- DBG(0, "--out->\n");
- dump_data(buf, PTD_GET_LEN(ptd));
- }
- }
-}
-
-static void dump_ptd_in_data(struct ptd *ptd, u8 *buf)
-{
- if (dbg_level > 0) {
- if (PTD_GET_DIR(ptd) == PTD_DIR_IN && PTD_GET_COUNT(ptd)) {
- DBG(0, "<--in--\n");
- dump_data(buf, PTD_GET_COUNT(ptd));
- }
- DBG(0, "-----\n");
- }
-}
-
-static void dump_ptd_queue(struct isp1362_ep_queue *epq)
-{
- struct isp1362_ep *ep;
- int dbg = dbg_level;
-
- dbg_level = 1;
- list_for_each_entry(ep, &epq->active, active) {
- dump_ptd(&ep->ptd);
- dump_data(ep->data, ep->length);
- }
- dbg_level = dbg;
-}
-#else
-#define dump_ptd(ptd) do {} while (0)
-#define dump_ptd_in_data(ptd, buf) do {} while (0)
-#define dump_ptd_out_data(ptd, buf) do {} while (0)
-#define dump_ptd_data(ptd, buf) do {} while (0)
-#define dump_ptd_queue(epq) do {} while (0)
-#endif
projects / thirdparty / linux.git / commitdiff
