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