+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (c) 2009 by Martin Fuzzey
- */
-
-/* this file is part of imx21-hcd.c */
-
-#ifdef CONFIG_DYNAMIC_DEBUG
-#define DEBUG
-#endif
-
-#ifndef DEBUG
-
-static inline void create_debug_files(struct imx21 *imx21) { }
-static inline void remove_debug_files(struct imx21 *imx21) { }
-static inline void debug_urb_submitted(struct imx21 *imx21, struct urb *urb) {}
-static inline void debug_urb_completed(struct imx21 *imx21, struct urb *urb,
- int status) {}
-static inline void debug_urb_unlinked(struct imx21 *imx21, struct urb *urb) {}
-static inline void debug_urb_queued_for_etd(struct imx21 *imx21,
- struct urb *urb) {}
-static inline void debug_urb_queued_for_dmem(struct imx21 *imx21,
- struct urb *urb) {}
-static inline void debug_etd_allocated(struct imx21 *imx21) {}
-static inline void debug_etd_freed(struct imx21 *imx21) {}
-static inline void debug_dmem_allocated(struct imx21 *imx21, int size) {}
-static inline void debug_dmem_freed(struct imx21 *imx21, int size) {}
-static inline void debug_isoc_submitted(struct imx21 *imx21,
- int frame, struct td *td) {}
-static inline void debug_isoc_completed(struct imx21 *imx21,
- int frame, struct td *td, int cc, int len) {}
-
-#else
-
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-
-static const char *dir_labels[] = {
- "TD 0",
- "OUT",
- "IN",
- "TD 1"
-};
-
-static const char *speed_labels[] = {
- "Full",
- "Low"
-};
-
-static const char *format_labels[] = {
- "Control",
- "ISO",
- "Bulk",
- "Interrupt"
-};
-
-static inline struct debug_stats *stats_for_urb(struct imx21 *imx21,
- struct urb *urb)
-{
- return usb_pipeisoc(urb->pipe) ?
- &imx21->isoc_stats : &imx21->nonisoc_stats;
-}
-
-static void debug_urb_submitted(struct imx21 *imx21, struct urb *urb)
-{
- stats_for_urb(imx21, urb)->submitted++;
-}
-
-static void debug_urb_completed(struct imx21 *imx21, struct urb *urb, int st)
-{
- if (st)
- stats_for_urb(imx21, urb)->completed_failed++;
- else
- stats_for_urb(imx21, urb)->completed_ok++;
-}
-
-static void debug_urb_unlinked(struct imx21 *imx21, struct urb *urb)
-{
- stats_for_urb(imx21, urb)->unlinked++;
-}
-
-static void debug_urb_queued_for_etd(struct imx21 *imx21, struct urb *urb)
-{
- stats_for_urb(imx21, urb)->queue_etd++;
-}
-
-static void debug_urb_queued_for_dmem(struct imx21 *imx21, struct urb *urb)
-{
- stats_for_urb(imx21, urb)->queue_dmem++;
-}
-
-static inline void debug_etd_allocated(struct imx21 *imx21)
-{
- imx21->etd_usage.maximum = max(
- ++(imx21->etd_usage.value),
- imx21->etd_usage.maximum);
-}
-
-static inline void debug_etd_freed(struct imx21 *imx21)
-{
- imx21->etd_usage.value--;
-}
-
-static inline void debug_dmem_allocated(struct imx21 *imx21, int size)
-{
- imx21->dmem_usage.value += size;
- imx21->dmem_usage.maximum = max(
- imx21->dmem_usage.value,
- imx21->dmem_usage.maximum);
-}
-
-static inline void debug_dmem_freed(struct imx21 *imx21, int size)
-{
- imx21->dmem_usage.value -= size;
-}
-
-
-static void debug_isoc_submitted(struct imx21 *imx21,
- int frame, struct td *td)
-{
- struct debug_isoc_trace *trace = &imx21->isoc_trace[
- imx21->isoc_trace_index++];
-
- imx21->isoc_trace_index %= ARRAY_SIZE(imx21->isoc_trace);
- trace->schedule_frame = td->frame;
- trace->submit_frame = frame;
- trace->request_len = td->len;
- trace->td = td;
-}
-
-static inline void debug_isoc_completed(struct imx21 *imx21,
- int frame, struct td *td, int cc, int len)
-{
- struct debug_isoc_trace *trace, *trace_failed;
- int i;
- int found = 0;
-
- trace = imx21->isoc_trace;
- for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace); i++, trace++) {
- if (trace->td == td) {
- trace->done_frame = frame;
- trace->done_len = len;
- trace->cc = cc;
- trace->td = NULL;
- found = 1;
- break;
- }
- }
-
- if (found && cc) {
- trace_failed = &imx21->isoc_trace_failed[
- imx21->isoc_trace_index_failed++];
-
- imx21->isoc_trace_index_failed %= ARRAY_SIZE(
- imx21->isoc_trace_failed);
- *trace_failed = *trace;
- }
-}
-
-
-static char *format_ep(struct usb_host_endpoint *ep, char *buf, int bufsize)
-{
- if (ep)
- snprintf(buf, bufsize, "ep_%02x (type:%02X kaddr:%p)",
- ep->desc.bEndpointAddress,
- usb_endpoint_type(&ep->desc),
- ep);
- else
- snprintf(buf, bufsize, "none");
- return buf;
-}
-
-static char *format_etd_dword0(u32 value, char *buf, int bufsize)
-{
- snprintf(buf, bufsize,
- "addr=%d ep=%d dir=%s speed=%s format=%s halted=%d",
- value & 0x7F,
- (value >> DW0_ENDPNT) & 0x0F,
- dir_labels[(value >> DW0_DIRECT) & 0x03],
- speed_labels[(value >> DW0_SPEED) & 0x01],
- format_labels[(value >> DW0_FORMAT) & 0x03],
- (value >> DW0_HALTED) & 0x01);
- return buf;
-}
-
-static int debug_status_show(struct seq_file *s, void *v)
-{
- struct imx21 *imx21 = s->private;
- int etds_allocated = 0;
- int etds_sw_busy = 0;
- int etds_hw_busy = 0;
- int dmem_blocks = 0;
- int queued_for_etd = 0;
- int queued_for_dmem = 0;
- unsigned int dmem_bytes = 0;
- int i;
- struct etd_priv *etd;
- u32 etd_enable_mask;
- unsigned long flags;
- struct imx21_dmem_area *dmem;
- struct ep_priv *ep_priv;
-
- spin_lock_irqsave(&imx21->lock, flags);
-
- etd_enable_mask = readl(imx21->regs + USBH_ETDENSET);
- for (i = 0, etd = imx21->etd; i < USB_NUM_ETD; i++, etd++) {
- if (etd->alloc)
- etds_allocated++;
- if (etd->urb)
- etds_sw_busy++;
- if (etd_enable_mask & (1<<i))
- etds_hw_busy++;
- }
-
- list_for_each_entry(dmem, &imx21->dmem_list, list) {
- dmem_bytes += dmem->size;
- dmem_blocks++;
- }
-
- list_for_each_entry(ep_priv, &imx21->queue_for_etd, queue)
- queued_for_etd++;
-
- list_for_each_entry(etd, &imx21->queue_for_dmem, queue)
- queued_for_dmem++;
-
- spin_unlock_irqrestore(&imx21->lock, flags);
-
- seq_printf(s,
- "Frame: %d\n"
- "ETDs allocated: %d/%d (max=%d)\n"
- "ETDs in use sw: %d\n"
- "ETDs in use hw: %d\n"
- "DMEM allocated: %d/%d (max=%d)\n"
- "DMEM blocks: %d\n"
- "Queued waiting for ETD: %d\n"
- "Queued waiting for DMEM: %d\n",
- readl(imx21->regs + USBH_FRMNUB) & 0xFFFF,
- etds_allocated, USB_NUM_ETD, imx21->etd_usage.maximum,
- etds_sw_busy,
- etds_hw_busy,
- dmem_bytes, DMEM_SIZE, imx21->dmem_usage.maximum,
- dmem_blocks,
- queued_for_etd,
- queued_for_dmem);
-
- return 0;
-}
-DEFINE_SHOW_ATTRIBUTE(debug_status);
-
-static int debug_dmem_show(struct seq_file *s, void *v)
-{
- struct imx21 *imx21 = s->private;
- struct imx21_dmem_area *dmem;
- unsigned long flags;
- char ep_text[40];
-
- spin_lock_irqsave(&imx21->lock, flags);
-
- list_for_each_entry(dmem, &imx21->dmem_list, list)
- seq_printf(s,
- "%04X: size=0x%X "
- "ep=%s\n",
- dmem->offset, dmem->size,
- format_ep(dmem->ep, ep_text, sizeof(ep_text)));
-
- spin_unlock_irqrestore(&imx21->lock, flags);
-
- return 0;
-}
-DEFINE_SHOW_ATTRIBUTE(debug_dmem);
-
-static int debug_etd_show(struct seq_file *s, void *v)
-{
- struct imx21 *imx21 = s->private;
- struct etd_priv *etd;
- char buf[60];
- u32 dword;
- int i, j;
- unsigned long flags;
-
- spin_lock_irqsave(&imx21->lock, flags);
-
- for (i = 0, etd = imx21->etd; i < USB_NUM_ETD; i++, etd++) {
- int state = -1;
- struct urb_priv *urb_priv;
- if (etd->urb) {
- urb_priv = etd->urb->hcpriv;
- if (urb_priv)
- state = urb_priv->state;
- }
-
- seq_printf(s,
- "etd_num: %d\n"
- "ep: %s\n"
- "alloc: %d\n"
- "len: %d\n"
- "busy sw: %d\n"
- "busy hw: %d\n"
- "urb state: %d\n"
- "current urb: %p\n",
-
- i,
- format_ep(etd->ep, buf, sizeof(buf)),
- etd->alloc,
- etd->len,
- etd->urb != NULL,
- (readl(imx21->regs + USBH_ETDENSET) & (1 << i)) > 0,
- state,
- etd->urb);
-
- for (j = 0; j < 4; j++) {
- dword = etd_readl(imx21, i, j);
- switch (j) {
- case 0:
- format_etd_dword0(dword, buf, sizeof(buf));
- break;
- case 2:
- snprintf(buf, sizeof(buf),
- "cc=0X%02X", dword >> DW2_COMPCODE);
- break;
- default:
- *buf = 0;
- break;
- }
- seq_printf(s,
- "dword %d: submitted=%08X cur=%08X [%s]\n",
- j,
- etd->submitted_dwords[j],
- dword,
- buf);
- }
- seq_printf(s, "\n");
- }
-
- spin_unlock_irqrestore(&imx21->lock, flags);
-
- return 0;
-}
-DEFINE_SHOW_ATTRIBUTE(debug_etd);
-
-static void debug_statistics_show_one(struct seq_file *s,
- const char *name, struct debug_stats *stats)
-{
- seq_printf(s, "%s:\n"
- "submitted URBs: %lu\n"
- "completed OK: %lu\n"
- "completed failed: %lu\n"
- "unlinked: %lu\n"
- "queued for ETD: %lu\n"
- "queued for DMEM: %lu\n\n",
- name,
- stats->submitted,
- stats->completed_ok,
- stats->completed_failed,
- stats->unlinked,
- stats->queue_etd,
- stats->queue_dmem);
-}
-
-static int debug_statistics_show(struct seq_file *s, void *v)
-{
- struct imx21 *imx21 = s->private;
- unsigned long flags;
-
- spin_lock_irqsave(&imx21->lock, flags);
-
- debug_statistics_show_one(s, "nonisoc", &imx21->nonisoc_stats);
- debug_statistics_show_one(s, "isoc", &imx21->isoc_stats);
- seq_printf(s, "unblock kludge triggers: %lu\n", imx21->debug_unblocks);
- spin_unlock_irqrestore(&imx21->lock, flags);
-
- return 0;
-}
-DEFINE_SHOW_ATTRIBUTE(debug_statistics);
-
-static void debug_isoc_show_one(struct seq_file *s,
- const char *name, int index, struct debug_isoc_trace *trace)
-{
- seq_printf(s, "%s %d:\n"
- "cc=0X%02X\n"
- "scheduled frame %d (%d)\n"
- "submitted frame %d (%d)\n"
- "completed frame %d (%d)\n"
- "requested length=%d\n"
- "completed length=%d\n\n",
- name, index,
- trace->cc,
- trace->schedule_frame, trace->schedule_frame & 0xFFFF,
- trace->submit_frame, trace->submit_frame & 0xFFFF,
- trace->done_frame, trace->done_frame & 0xFFFF,
- trace->request_len,
- trace->done_len);
-}
-
-static int debug_isoc_show(struct seq_file *s, void *v)
-{
- struct imx21 *imx21 = s->private;
- struct debug_isoc_trace *trace;
- unsigned long flags;
- int i;
-
- spin_lock_irqsave(&imx21->lock, flags);
-
- trace = imx21->isoc_trace_failed;
- for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace_failed); i++, trace++)
- debug_isoc_show_one(s, "isoc failed", i, trace);
-
- trace = imx21->isoc_trace;
- for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace); i++, trace++)
- debug_isoc_show_one(s, "isoc", i, trace);
-
- spin_unlock_irqrestore(&imx21->lock, flags);
-
- return 0;
-}
-DEFINE_SHOW_ATTRIBUTE(debug_isoc);
-
-static void create_debug_files(struct imx21 *imx21)
-{
- struct dentry *root;
-
- root = debugfs_create_dir(dev_name(imx21->dev), usb_debug_root);
- imx21->debug_root = root;
-
- debugfs_create_file("status", S_IRUGO, root, imx21, &debug_status_fops);
- debugfs_create_file("dmem", S_IRUGO, root, imx21, &debug_dmem_fops);
- debugfs_create_file("etd", S_IRUGO, root, imx21, &debug_etd_fops);
- debugfs_create_file("statistics", S_IRUGO, root, imx21,
- &debug_statistics_fops);
- debugfs_create_file("isoc", S_IRUGO, root, imx21, &debug_isoc_fops);
-}
-
-static void remove_debug_files(struct imx21 *imx21)
-{
- debugfs_remove_recursive(imx21->debug_root);
-}
-
-#endif
-
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * USB Host Controller Driver for IMX21
- *
- * Copyright (C) 2006 Loping Dog Embedded Systems
- * Copyright (C) 2009 Martin Fuzzey
- * Originally written by Jay Monkman <jtm@lopingdog.com>
- * Ported to 2.6.30, debugged and enhanced by Martin Fuzzey
- */
-
-
- /*
- * The i.MX21 USB hardware contains
- * * 32 transfer descriptors (called ETDs)
- * * 4Kb of Data memory
- *
- * The data memory is shared between the host and function controllers
- * (but this driver only supports the host controller)
- *
- * So setting up a transfer involves:
- * * Allocating a ETD
- * * Fill in ETD with appropriate information
- * * Allocating data memory (and putting the offset in the ETD)
- * * Activate the ETD
- * * Get interrupt when done.
- *
- * An ETD is assigned to each active endpoint.
- *
- * Low resource (ETD and Data memory) situations are handled differently for
- * isochronous and non insosynchronous transactions :
- *
- * Non ISOC transfers are queued if either ETDs or Data memory are unavailable
- *
- * ISOC transfers use 2 ETDs per endpoint to achieve double buffering.
- * They allocate both ETDs and Data memory during URB submission
- * (and fail if unavailable).
- */
-
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/list.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/usb.h>
-#include <linux/usb/hcd.h>
-#include <linux/dma-mapping.h>
-#include <linux/module.h>
-
-#include "imx21-hcd.h"
-
-#ifdef CONFIG_DYNAMIC_DEBUG
-#define DEBUG
-#endif
-
-#ifdef DEBUG
-#define DEBUG_LOG_FRAME(imx21, etd, event) \
- (etd)->event##_frame = readl((imx21)->regs + USBH_FRMNUB)
-#else
-#define DEBUG_LOG_FRAME(imx21, etd, event) do { } while (0)
-#endif
-
-static const char hcd_name[] = "imx21-hcd";
-
-static inline struct imx21 *hcd_to_imx21(struct usb_hcd *hcd)
-{
- return (struct imx21 *)hcd->hcd_priv;
-}
-
-
-/* =========================================== */
-/* Hardware access helpers */
-/* =========================================== */
-
-static inline void set_register_bits(struct imx21 *imx21, u32 offset, u32 mask)
-{
- void __iomem *reg = imx21->regs + offset;
- writel(readl(reg) | mask, reg);
-}
-
-static inline void clear_register_bits(struct imx21 *imx21,
- u32 offset, u32 mask)
-{
- void __iomem *reg = imx21->regs + offset;
- writel(readl(reg) & ~mask, reg);
-}
-
-static inline void clear_toggle_bit(struct imx21 *imx21, u32 offset, u32 mask)
-{
- void __iomem *reg = imx21->regs + offset;
-
- if (readl(reg) & mask)
- writel(mask, reg);
-}
-
-static inline void set_toggle_bit(struct imx21 *imx21, u32 offset, u32 mask)
-{
- void __iomem *reg = imx21->regs + offset;
-
- if (!(readl(reg) & mask))
- writel(mask, reg);
-}
-
-static void etd_writel(struct imx21 *imx21, int etd_num, int dword, u32 value)
-{
- writel(value, imx21->regs + USB_ETD_DWORD(etd_num, dword));
-}
-
-static u32 etd_readl(struct imx21 *imx21, int etd_num, int dword)
-{
- return readl(imx21->regs + USB_ETD_DWORD(etd_num, dword));
-}
-
-static inline int wrap_frame(int counter)
-{
- return counter & 0xFFFF;
-}
-
-static inline int frame_after(int frame, int after)
-{
- /* handle wrapping like jiffies time_afer */
- return (s16)((s16)after - (s16)frame) < 0;
-}
-
-static int imx21_hc_get_frame(struct usb_hcd *hcd)
-{
- struct imx21 *imx21 = hcd_to_imx21(hcd);
-
- return wrap_frame(readl(imx21->regs + USBH_FRMNUB));
-}
-
-static inline bool unsuitable_for_dma(dma_addr_t addr)
-{
- return (addr & 3) != 0;
-}
-
-#include "imx21-dbg.c"
-
-static void nonisoc_urb_completed_for_etd(
- struct imx21 *imx21, struct etd_priv *etd, int status);
-static void schedule_nonisoc_etd(struct imx21 *imx21, struct urb *urb);
-static void free_dmem(struct imx21 *imx21, struct etd_priv *etd);
-
-/* =========================================== */
-/* ETD management */
-/* =========================================== */
-
-static int alloc_etd(struct imx21 *imx21)
-{
- int i;
- struct etd_priv *etd = imx21->etd;
-
- for (i = 0; i < USB_NUM_ETD; i++, etd++) {
- if (etd->alloc == 0) {
- memset(etd, 0, sizeof(imx21->etd[0]));
- etd->alloc = 1;
- debug_etd_allocated(imx21);
- return i;
- }
- }
- return -1;
-}
-
-static void disactivate_etd(struct imx21 *imx21, int num)
-{
- int etd_mask = (1 << num);
- struct etd_priv *etd = &imx21->etd[num];
-
- writel(etd_mask, imx21->regs + USBH_ETDENCLR);
- clear_register_bits(imx21, USBH_ETDDONEEN, etd_mask);
- writel(etd_mask, imx21->regs + USB_ETDDMACHANLCLR);
- clear_toggle_bit(imx21, USBH_ETDDONESTAT, etd_mask);
-
- etd->active_count = 0;
-
- DEBUG_LOG_FRAME(imx21, etd, disactivated);
-}
-
-static void reset_etd(struct imx21 *imx21, int num)
-{
- struct etd_priv *etd = imx21->etd + num;
- int i;
-
- disactivate_etd(imx21, num);
-
- for (i = 0; i < 4; i++)
- etd_writel(imx21, num, i, 0);
- etd->urb = NULL;
- etd->ep = NULL;
- etd->td = NULL;
- etd->bounce_buffer = NULL;
-}
-
-static void free_etd(struct imx21 *imx21, int num)
-{
- if (num < 0)
- return;
-
- if (num >= USB_NUM_ETD) {
- dev_err(imx21->dev, "BAD etd=%d!\n", num);
- return;
- }
- if (imx21->etd[num].alloc == 0) {
- dev_err(imx21->dev, "ETD %d already free!\n", num);
- return;
- }
-
- debug_etd_freed(imx21);
- reset_etd(imx21, num);
- memset(&imx21->etd[num], 0, sizeof(imx21->etd[0]));
-}
-
-
-static void setup_etd_dword0(struct imx21 *imx21,
- int etd_num, struct urb *urb, u8 dir, u16 maxpacket)
-{
- etd_writel(imx21, etd_num, 0,
- ((u32) usb_pipedevice(urb->pipe)) << DW0_ADDRESS |
- ((u32) usb_pipeendpoint(urb->pipe) << DW0_ENDPNT) |
- ((u32) dir << DW0_DIRECT) |
- ((u32) ((urb->dev->speed == USB_SPEED_LOW) ?
- 1 : 0) << DW0_SPEED) |
- ((u32) fmt_urb_to_etd[usb_pipetype(urb->pipe)] << DW0_FORMAT) |
- ((u32) maxpacket << DW0_MAXPKTSIZ));
-}
-
-/*
- * Copy buffer to data controller data memory.
- * We cannot use memcpy_toio() because the hardware requires 32bit writes
- */
-static void copy_to_dmem(
- struct imx21 *imx21, int dmem_offset, void *src, int count)
-{
- void __iomem *dmem = imx21->regs + USBOTG_DMEM + dmem_offset;
- u32 word = 0;
- u8 *p = src;
- int byte = 0;
- int i;
-
- for (i = 0; i < count; i++) {
- byte = i % 4;
- word += (*p++ << (byte * 8));
- if (byte == 3) {
- writel(word, dmem);
- dmem += 4;
- word = 0;
- }
- }
-
- if (count && byte != 3)
- writel(word, dmem);
-}
-
-static void activate_etd(struct imx21 *imx21, int etd_num, u8 dir)
-{
- u32 etd_mask = 1 << etd_num;
- struct etd_priv *etd = &imx21->etd[etd_num];
-
- if (etd->dma_handle && unsuitable_for_dma(etd->dma_handle)) {
- /* For non aligned isoc the condition below is always true */
- if (etd->len <= etd->dmem_size) {
- /* Fits into data memory, use PIO */
- if (dir != TD_DIR_IN) {
- copy_to_dmem(imx21,
- etd->dmem_offset,
- etd->cpu_buffer, etd->len);
- }
- etd->dma_handle = 0;
-
- } else {
- /* Too big for data memory, use bounce buffer */
- enum dma_data_direction dmadir;
-
- if (dir == TD_DIR_IN) {
- dmadir = DMA_FROM_DEVICE;
- etd->bounce_buffer = kmalloc(etd->len,
- GFP_ATOMIC);
- } else {
- dmadir = DMA_TO_DEVICE;
- etd->bounce_buffer = kmemdup(etd->cpu_buffer,
- etd->len,
- GFP_ATOMIC);
- }
- if (!etd->bounce_buffer) {
- dev_err(imx21->dev, "failed bounce alloc\n");
- goto err_bounce_alloc;
- }
-
- etd->dma_handle =
- dma_map_single(imx21->dev,
- etd->bounce_buffer,
- etd->len,
- dmadir);
- if (dma_mapping_error(imx21->dev, etd->dma_handle)) {
- dev_err(imx21->dev, "failed bounce map\n");
- goto err_bounce_map;
- }
- }
- }
-
- clear_toggle_bit(imx21, USBH_ETDDONESTAT, etd_mask);
- set_register_bits(imx21, USBH_ETDDONEEN, etd_mask);
- clear_toggle_bit(imx21, USBH_XFILLSTAT, etd_mask);
- clear_toggle_bit(imx21, USBH_YFILLSTAT, etd_mask);
-
- if (etd->dma_handle) {
- set_register_bits(imx21, USB_ETDDMACHANLCLR, etd_mask);
- clear_toggle_bit(imx21, USBH_XBUFSTAT, etd_mask);
- clear_toggle_bit(imx21, USBH_YBUFSTAT, etd_mask);
- writel(etd->dma_handle, imx21->regs + USB_ETDSMSA(etd_num));
- set_register_bits(imx21, USB_ETDDMAEN, etd_mask);
- } else {
- if (dir != TD_DIR_IN) {
- /* need to set for ZLP and PIO */
- set_toggle_bit(imx21, USBH_XFILLSTAT, etd_mask);
- set_toggle_bit(imx21, USBH_YFILLSTAT, etd_mask);
- }
- }
-
- DEBUG_LOG_FRAME(imx21, etd, activated);
-
-#ifdef DEBUG
- if (!etd->active_count) {
- int i;
- etd->activated_frame = readl(imx21->regs + USBH_FRMNUB);
- etd->disactivated_frame = -1;
- etd->last_int_frame = -1;
- etd->last_req_frame = -1;
-
- for (i = 0; i < 4; i++)
- etd->submitted_dwords[i] = etd_readl(imx21, etd_num, i);
- }
-#endif
-
- etd->active_count = 1;
- writel(etd_mask, imx21->regs + USBH_ETDENSET);
- return;
-
-err_bounce_map:
- kfree(etd->bounce_buffer);
-
-err_bounce_alloc:
- free_dmem(imx21, etd);
- nonisoc_urb_completed_for_etd(imx21, etd, -ENOMEM);
-}
-
-/* =========================================== */
-/* Data memory management */
-/* =========================================== */
-
-static int alloc_dmem(struct imx21 *imx21, unsigned int size,
- struct usb_host_endpoint *ep)
-{
- unsigned int offset = 0;
- struct imx21_dmem_area *area;
- struct imx21_dmem_area *tmp;
-
- size += (~size + 1) & 0x3; /* Round to 4 byte multiple */
-
- if (size > DMEM_SIZE) {
- dev_err(imx21->dev, "size=%d > DMEM_SIZE(%d)\n",
- size, DMEM_SIZE);
- return -EINVAL;
- }
-
- list_for_each_entry(tmp, &imx21->dmem_list, list) {
- if ((size + offset) < offset)
- goto fail;
- if ((size + offset) <= tmp->offset)
- break;
- offset = tmp->size + tmp->offset;
- if ((offset + size) > DMEM_SIZE)
- goto fail;
- }
-
- area = kmalloc(sizeof(struct imx21_dmem_area), GFP_ATOMIC);
- if (area == NULL)
- return -ENOMEM;
-
- area->ep = ep;
- area->offset = offset;
- area->size = size;
- list_add_tail(&area->list, &tmp->list);
- debug_dmem_allocated(imx21, size);
- return offset;
-
-fail:
- return -ENOMEM;
-}
-
-/* Memory now available for a queued ETD - activate it */
-static void activate_queued_etd(struct imx21 *imx21,
- struct etd_priv *etd, u32 dmem_offset)
-{
- struct urb_priv *urb_priv = etd->urb->hcpriv;
- int etd_num = etd - &imx21->etd[0];
- u32 maxpacket = etd_readl(imx21, etd_num, 1) >> DW1_YBUFSRTAD;
- u8 dir = (etd_readl(imx21, etd_num, 2) >> DW2_DIRPID) & 0x03;
-
- dev_dbg(imx21->dev, "activating queued ETD %d now DMEM available\n",
- etd_num);
- etd_writel(imx21, etd_num, 1,
- ((dmem_offset + maxpacket) << DW1_YBUFSRTAD) | dmem_offset);
-
- etd->dmem_offset = dmem_offset;
- urb_priv->active = 1;
- activate_etd(imx21, etd_num, dir);
-}
-
-static void free_dmem(struct imx21 *imx21, struct etd_priv *etd)
-{
- struct imx21_dmem_area *area;
- struct etd_priv *tmp;
- int found = 0;
- int offset;
-
- if (!etd->dmem_size)
- return;
- etd->dmem_size = 0;
-
- offset = etd->dmem_offset;
- list_for_each_entry(area, &imx21->dmem_list, list) {
- if (area->offset == offset) {
- debug_dmem_freed(imx21, area->size);
- list_del(&area->list);
- kfree(area);
- found = 1;
- break;
- }
- }
-
- if (!found) {
- dev_err(imx21->dev,
- "Trying to free unallocated DMEM %d\n", offset);
- return;
- }
-
- /* Try again to allocate memory for anything we've queued */
- list_for_each_entry_safe(etd, tmp, &imx21->queue_for_dmem, queue) {
- offset = alloc_dmem(imx21, etd->dmem_size, etd->ep);
- if (offset >= 0) {
- list_del(&etd->queue);
- activate_queued_etd(imx21, etd, (u32)offset);
- }
- }
-}
-
-static void free_epdmem(struct imx21 *imx21, struct usb_host_endpoint *ep)
-{
- struct imx21_dmem_area *area, *tmp;
-
- list_for_each_entry_safe(area, tmp, &imx21->dmem_list, list) {
- if (area->ep == ep) {
- dev_err(imx21->dev,
- "Active DMEM %d for disabled ep=%p\n",
- area->offset, ep);
- list_del(&area->list);
- kfree(area);
- }
- }
-}
-
-
-/* =========================================== */
-/* End handling */
-/* =========================================== */
-
-/* Endpoint now idle - release its ETD(s) or assign to queued request */
-static void ep_idle(struct imx21 *imx21, struct ep_priv *ep_priv)
-{
- int i;
-
- for (i = 0; i < NUM_ISO_ETDS; i++) {
- int etd_num = ep_priv->etd[i];
- struct etd_priv *etd;
- if (etd_num < 0)
- continue;
-
- etd = &imx21->etd[etd_num];
- ep_priv->etd[i] = -1;
-
- free_dmem(imx21, etd); /* for isoc */
-
- if (list_empty(&imx21->queue_for_etd)) {
- free_etd(imx21, etd_num);
- continue;
- }
-
- dev_dbg(imx21->dev,
- "assigning idle etd %d for queued request\n", etd_num);
- ep_priv = list_first_entry(&imx21->queue_for_etd,
- struct ep_priv, queue);
- list_del(&ep_priv->queue);
- reset_etd(imx21, etd_num);
- ep_priv->waiting_etd = 0;
- ep_priv->etd[i] = etd_num;
-
- if (list_empty(&ep_priv->ep->urb_list)) {
- dev_err(imx21->dev, "No urb for queued ep!\n");
- continue;
- }
- schedule_nonisoc_etd(imx21, list_first_entry(
- &ep_priv->ep->urb_list, struct urb, urb_list));
- }
-}
-
-static void urb_done(struct usb_hcd *hcd, struct urb *urb, int status)
-__releases(imx21->lock)
-__acquires(imx21->lock)
-{
- struct imx21 *imx21 = hcd_to_imx21(hcd);
- struct ep_priv *ep_priv = urb->ep->hcpriv;
- struct urb_priv *urb_priv = urb->hcpriv;
-
- debug_urb_completed(imx21, urb, status);
- dev_vdbg(imx21->dev, "urb %p done %d\n", urb, status);
-
- kfree(urb_priv->isoc_td);
- kfree(urb->hcpriv);
- urb->hcpriv = NULL;
- usb_hcd_unlink_urb_from_ep(hcd, urb);
- spin_unlock(&imx21->lock);
- usb_hcd_giveback_urb(hcd, urb, status);
- spin_lock(&imx21->lock);
- if (list_empty(&ep_priv->ep->urb_list))
- ep_idle(imx21, ep_priv);
-}
-
-static void nonisoc_urb_completed_for_etd(
- struct imx21 *imx21, struct etd_priv *etd, int status)
-{
- struct usb_host_endpoint *ep = etd->ep;
-
- urb_done(imx21->hcd, etd->urb, status);
- etd->urb = NULL;
-
- if (!list_empty(&ep->urb_list)) {
- struct urb *urb = list_first_entry(
- &ep->urb_list, struct urb, urb_list);
-
- dev_vdbg(imx21->dev, "next URB %p\n", urb);
- schedule_nonisoc_etd(imx21, urb);
- }
-}
-
-
-/* =========================================== */
-/* ISOC Handling ... */
-/* =========================================== */
-
-static void schedule_isoc_etds(struct usb_hcd *hcd,
- struct usb_host_endpoint *ep)
-{
- struct imx21 *imx21 = hcd_to_imx21(hcd);
- struct ep_priv *ep_priv = ep->hcpriv;
- struct etd_priv *etd;
- struct urb_priv *urb_priv;
- struct td *td;
- int etd_num;
- int i;
- int cur_frame;
- u8 dir;
-
- for (i = 0; i < NUM_ISO_ETDS; i++) {
-too_late:
- if (list_empty(&ep_priv->td_list))
- break;
-
- etd_num = ep_priv->etd[i];
- if (etd_num < 0)
- break;
-
- etd = &imx21->etd[etd_num];
- if (etd->urb)
- continue;
-
- td = list_entry(ep_priv->td_list.next, struct td, list);
- list_del(&td->list);
- urb_priv = td->urb->hcpriv;
-
- cur_frame = imx21_hc_get_frame(hcd);
- if (frame_after(cur_frame, td->frame)) {
- dev_dbg(imx21->dev, "isoc too late frame %d > %d\n",
- cur_frame, td->frame);
- urb_priv->isoc_status = -EXDEV;
- td->urb->iso_frame_desc[
- td->isoc_index].actual_length = 0;
- td->urb->iso_frame_desc[td->isoc_index].status = -EXDEV;
- if (--urb_priv->isoc_remaining == 0)
- urb_done(hcd, td->urb, urb_priv->isoc_status);
- goto too_late;
- }
-
- urb_priv->active = 1;
- etd->td = td;
- etd->ep = td->ep;
- etd->urb = td->urb;
- etd->len = td->len;
- etd->dma_handle = td->dma_handle;
- etd->cpu_buffer = td->cpu_buffer;
-
- debug_isoc_submitted(imx21, cur_frame, td);
-
- dir = usb_pipeout(td->urb->pipe) ? TD_DIR_OUT : TD_DIR_IN;
- setup_etd_dword0(imx21, etd_num, td->urb, dir, etd->dmem_size);
- etd_writel(imx21, etd_num, 1, etd->dmem_offset);
- etd_writel(imx21, etd_num, 2,
- (TD_NOTACCESSED << DW2_COMPCODE) |
- ((td->frame & 0xFFFF) << DW2_STARTFRM));
- etd_writel(imx21, etd_num, 3,
- (TD_NOTACCESSED << DW3_COMPCODE0) |
- (td->len << DW3_PKTLEN0));
-
- activate_etd(imx21, etd_num, dir);
- }
-}
-
-static void isoc_etd_done(struct usb_hcd *hcd, int etd_num)
-{
- struct imx21 *imx21 = hcd_to_imx21(hcd);
- int etd_mask = 1 << etd_num;
- struct etd_priv *etd = imx21->etd + etd_num;
- struct urb *urb = etd->urb;
- struct urb_priv *urb_priv = urb->hcpriv;
- struct td *td = etd->td;
- struct usb_host_endpoint *ep = etd->ep;
- int isoc_index = td->isoc_index;
- unsigned int pipe = urb->pipe;
- int dir_in = usb_pipein(pipe);
- int cc;
- int bytes_xfrd;
-
- disactivate_etd(imx21, etd_num);
-
- cc = (etd_readl(imx21, etd_num, 3) >> DW3_COMPCODE0) & 0xf;
- bytes_xfrd = etd_readl(imx21, etd_num, 3) & 0x3ff;
-
- /* Input doesn't always fill the buffer, don't generate an error
- * when this happens.
- */
- if (dir_in && (cc == TD_DATAUNDERRUN))
- cc = TD_CC_NOERROR;
-
- if (cc == TD_NOTACCESSED)
- bytes_xfrd = 0;
-
- debug_isoc_completed(imx21,
- imx21_hc_get_frame(hcd), td, cc, bytes_xfrd);
- if (cc) {
- urb_priv->isoc_status = -EXDEV;
- dev_dbg(imx21->dev,
- "bad iso cc=0x%X frame=%d sched frame=%d "
- "cnt=%d len=%d urb=%p etd=%d index=%d\n",
- cc, imx21_hc_get_frame(hcd), td->frame,
- bytes_xfrd, td->len, urb, etd_num, isoc_index);
- }
-
- if (dir_in) {
- clear_toggle_bit(imx21, USBH_XFILLSTAT, etd_mask);
- if (!etd->dma_handle)
- memcpy_fromio(etd->cpu_buffer,
- imx21->regs + USBOTG_DMEM + etd->dmem_offset,
- bytes_xfrd);
- }
-
- urb->actual_length += bytes_xfrd;
- urb->iso_frame_desc[isoc_index].actual_length = bytes_xfrd;
- urb->iso_frame_desc[isoc_index].status = cc_to_error[cc];
-
- etd->td = NULL;
- etd->urb = NULL;
- etd->ep = NULL;
-
- if (--urb_priv->isoc_remaining == 0)
- urb_done(hcd, urb, urb_priv->isoc_status);
-
- schedule_isoc_etds(hcd, ep);
-}
-
-static struct ep_priv *alloc_isoc_ep(
- struct imx21 *imx21, struct usb_host_endpoint *ep)
-{
- struct ep_priv *ep_priv;
- int i;
-
- ep_priv = kzalloc(sizeof(struct ep_priv), GFP_ATOMIC);
- if (!ep_priv)
- return NULL;
-
- for (i = 0; i < NUM_ISO_ETDS; i++)
- ep_priv->etd[i] = -1;
-
- INIT_LIST_HEAD(&ep_priv->td_list);
- ep_priv->ep = ep;
- ep->hcpriv = ep_priv;
- return ep_priv;
-}
-
-static int alloc_isoc_etds(struct imx21 *imx21, struct ep_priv *ep_priv)
-{
- int i, j;
- int etd_num;
-
- /* Allocate the ETDs if required */
- for (i = 0; i < NUM_ISO_ETDS; i++) {
- if (ep_priv->etd[i] < 0) {
- etd_num = alloc_etd(imx21);
- if (etd_num < 0)
- goto alloc_etd_failed;
-
- ep_priv->etd[i] = etd_num;
- imx21->etd[etd_num].ep = ep_priv->ep;
- }
- }
- return 0;
-
-alloc_etd_failed:
- dev_err(imx21->dev, "isoc: Couldn't allocate etd\n");
- for (j = 0; j < i; j++) {
- free_etd(imx21, ep_priv->etd[j]);
- ep_priv->etd[j] = -1;
- }
- return -ENOMEM;
-}
-
-static int imx21_hc_urb_enqueue_isoc(struct usb_hcd *hcd,
- struct usb_host_endpoint *ep,
- struct urb *urb, gfp_t mem_flags)
-{
- struct imx21 *imx21 = hcd_to_imx21(hcd);
- struct urb_priv *urb_priv;
- unsigned long flags;
- struct ep_priv *ep_priv;
- struct td *td = NULL;
- int i;
- int ret;
- int cur_frame;
- u16 maxpacket;
-
- urb_priv = kzalloc(sizeof(struct urb_priv), mem_flags);
- if (urb_priv == NULL)
- return -ENOMEM;
-
- urb_priv->isoc_td = kcalloc(urb->number_of_packets, sizeof(struct td),
- mem_flags);
- if (urb_priv->isoc_td == NULL) {
- ret = -ENOMEM;
- goto alloc_td_failed;
- }
-
- spin_lock_irqsave(&imx21->lock, flags);
-
- if (ep->hcpriv == NULL) {
- ep_priv = alloc_isoc_ep(imx21, ep);
- if (ep_priv == NULL) {
- ret = -ENOMEM;
- goto alloc_ep_failed;
- }
- } else {
- ep_priv = ep->hcpriv;
- }
-
- ret = alloc_isoc_etds(imx21, ep_priv);
- if (ret)
- goto alloc_etd_failed;
-
- ret = usb_hcd_link_urb_to_ep(hcd, urb);
- if (ret)
- goto link_failed;
-
- urb->status = -EINPROGRESS;
- urb->actual_length = 0;
- urb->error_count = 0;
- urb->hcpriv = urb_priv;
- urb_priv->ep = ep;
-
- /* allocate data memory for largest packets if not already done */
- maxpacket = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
- for (i = 0; i < NUM_ISO_ETDS; i++) {
- struct etd_priv *etd = &imx21->etd[ep_priv->etd[i]];
-
- if (etd->dmem_size > 0 && etd->dmem_size < maxpacket) {
- /* not sure if this can really occur.... */
- dev_err(imx21->dev, "increasing isoc buffer %d->%d\n",
- etd->dmem_size, maxpacket);
- ret = -EMSGSIZE;
- goto alloc_dmem_failed;
- }
-
- if (etd->dmem_size == 0) {
- etd->dmem_offset = alloc_dmem(imx21, maxpacket, ep);
- if (etd->dmem_offset < 0) {
- dev_dbg(imx21->dev, "failed alloc isoc dmem\n");
- ret = -EAGAIN;
- goto alloc_dmem_failed;
- }
- etd->dmem_size = maxpacket;
- }
- }
-
- /* calculate frame */
- cur_frame = imx21_hc_get_frame(hcd);
- i = 0;
- if (list_empty(&ep_priv->td_list)) {
- urb->start_frame = wrap_frame(cur_frame + 5);
- } else {
- urb->start_frame = wrap_frame(list_entry(ep_priv->td_list.prev,
- struct td, list)->frame + urb->interval);
-
- if (frame_after(cur_frame, urb->start_frame)) {
- dev_dbg(imx21->dev,
- "enqueue: adjusting iso start %d (cur=%d) asap=%d\n",
- urb->start_frame, cur_frame,
- (urb->transfer_flags & URB_ISO_ASAP) != 0);
- i = DIV_ROUND_UP(wrap_frame(
- cur_frame - urb->start_frame),
- urb->interval);
-
- /* Treat underruns as if URB_ISO_ASAP was set */
- if ((urb->transfer_flags & URB_ISO_ASAP) ||
- i >= urb->number_of_packets) {
- urb->start_frame = wrap_frame(urb->start_frame
- + i * urb->interval);
- i = 0;
- }
- }
- }
-
- /* set up transfers */
- urb_priv->isoc_remaining = urb->number_of_packets - i;
- td = urb_priv->isoc_td;
- for (; i < urb->number_of_packets; i++, td++) {
- unsigned int offset = urb->iso_frame_desc[i].offset;
- td->ep = ep;
- td->urb = urb;
- td->len = urb->iso_frame_desc[i].length;
- td->isoc_index = i;
- td->frame = wrap_frame(urb->start_frame + urb->interval * i);
- td->dma_handle = urb->transfer_dma + offset;
- td->cpu_buffer = urb->transfer_buffer + offset;
- list_add_tail(&td->list, &ep_priv->td_list);
- }
-
- dev_vdbg(imx21->dev, "setup %d packets for iso frame %d->%d\n",
- urb->number_of_packets, urb->start_frame, td->frame);
-
- debug_urb_submitted(imx21, urb);
- schedule_isoc_etds(hcd, ep);
-
- spin_unlock_irqrestore(&imx21->lock, flags);
- return 0;
-
-alloc_dmem_failed:
- usb_hcd_unlink_urb_from_ep(hcd, urb);
-
-link_failed:
-alloc_etd_failed:
-alloc_ep_failed:
- spin_unlock_irqrestore(&imx21->lock, flags);
- kfree(urb_priv->isoc_td);
-
-alloc_td_failed:
- kfree(urb_priv);
- return ret;
-}
-
-static void dequeue_isoc_urb(struct imx21 *imx21,
- struct urb *urb, struct ep_priv *ep_priv)
-{
- struct urb_priv *urb_priv = urb->hcpriv;
- struct td *td, *tmp;
- int i;
-
- if (urb_priv->active) {
- for (i = 0; i < NUM_ISO_ETDS; i++) {
- int etd_num = ep_priv->etd[i];
- if (etd_num != -1 && imx21->etd[etd_num].urb == urb) {
- struct etd_priv *etd = imx21->etd + etd_num;
-
- reset_etd(imx21, etd_num);
- free_dmem(imx21, etd);
- }
- }
- }
-
- list_for_each_entry_safe(td, tmp, &ep_priv->td_list, list) {
- if (td->urb == urb) {
- dev_vdbg(imx21->dev, "removing td %p\n", td);
- list_del(&td->list);
- }
- }
-}
-
-/* =========================================== */
-/* NON ISOC Handling ... */
-/* =========================================== */
-
-static void schedule_nonisoc_etd(struct imx21 *imx21, struct urb *urb)
-{
- unsigned int pipe = urb->pipe;
- struct urb_priv *urb_priv = urb->hcpriv;
- struct ep_priv *ep_priv = urb_priv->ep->hcpriv;
- int state = urb_priv->state;
- int etd_num = ep_priv->etd[0];
- struct etd_priv *etd;
- u32 count;
- u16 etd_buf_size;
- u16 maxpacket;
- u8 dir;
- u8 bufround;
- u8 datatoggle;
- u8 interval = 0;
- u8 relpolpos = 0;
-
- if (etd_num < 0) {
- dev_err(imx21->dev, "No valid ETD\n");
- return;
- }
- if (readl(imx21->regs + USBH_ETDENSET) & (1 << etd_num))
- dev_err(imx21->dev, "submitting to active ETD %d\n", etd_num);
-
- etd = &imx21->etd[etd_num];
- maxpacket = usb_maxpacket(urb->dev, pipe, usb_pipeout(pipe));
- if (!maxpacket)
- maxpacket = 8;
-
- if (usb_pipecontrol(pipe) && (state != US_CTRL_DATA)) {
- if (state == US_CTRL_SETUP) {
- dir = TD_DIR_SETUP;
- if (unsuitable_for_dma(urb->setup_dma))
- usb_hcd_unmap_urb_setup_for_dma(imx21->hcd,
- urb);
- etd->dma_handle = urb->setup_dma;
- etd->cpu_buffer = urb->setup_packet;
- bufround = 0;
- count = 8;
- datatoggle = TD_TOGGLE_DATA0;
- } else { /* US_CTRL_ACK */
- dir = usb_pipeout(pipe) ? TD_DIR_IN : TD_DIR_OUT;
- bufround = 0;
- count = 0;
- datatoggle = TD_TOGGLE_DATA1;
- }
- } else {
- dir = usb_pipeout(pipe) ? TD_DIR_OUT : TD_DIR_IN;
- bufround = (dir == TD_DIR_IN) ? 1 : 0;
- if (unsuitable_for_dma(urb->transfer_dma))
- usb_hcd_unmap_urb_for_dma(imx21->hcd, urb);
-
- etd->dma_handle = urb->transfer_dma;
- etd->cpu_buffer = urb->transfer_buffer;
- if (usb_pipebulk(pipe) && (state == US_BULK0))
- count = 0;
- else
- count = urb->transfer_buffer_length;
-
- if (usb_pipecontrol(pipe)) {
- datatoggle = TD_TOGGLE_DATA1;
- } else {
- if (usb_gettoggle(
- urb->dev,
- usb_pipeendpoint(urb->pipe),
- usb_pipeout(urb->pipe)))
- datatoggle = TD_TOGGLE_DATA1;
- else
- datatoggle = TD_TOGGLE_DATA0;
- }
- }
-
- etd->urb = urb;
- etd->ep = urb_priv->ep;
- etd->len = count;
-
- if (usb_pipeint(pipe)) {
- interval = urb->interval;
- relpolpos = (readl(imx21->regs + USBH_FRMNUB) + 1) & 0xff;
- }
-
- /* Write ETD to device memory */
- setup_etd_dword0(imx21, etd_num, urb, dir, maxpacket);
-
- etd_writel(imx21, etd_num, 2,
- (u32) interval << DW2_POLINTERV |
- ((u32) relpolpos << DW2_RELPOLPOS) |
- ((u32) dir << DW2_DIRPID) |
- ((u32) bufround << DW2_BUFROUND) |
- ((u32) datatoggle << DW2_DATATOG) |
- ((u32) TD_NOTACCESSED << DW2_COMPCODE));
-
- /* DMA will always transfer buffer size even if TOBYCNT in DWORD3
- is smaller. Make sure we don't overrun the buffer!
- */
- if (count && count < maxpacket)
- etd_buf_size = count;
- else
- etd_buf_size = maxpacket;
-
- etd_writel(imx21, etd_num, 3,
- ((u32) (etd_buf_size - 1) << DW3_BUFSIZE) | (u32) count);
-
- if (!count)
- etd->dma_handle = 0;
-
- /* allocate x and y buffer space at once */
- etd->dmem_size = (count > maxpacket) ? maxpacket * 2 : maxpacket;
- etd->dmem_offset = alloc_dmem(imx21, etd->dmem_size, urb_priv->ep);
- if (etd->dmem_offset < 0) {
- /* Setup everything we can in HW and update when we get DMEM */
- etd_writel(imx21, etd_num, 1, (u32)maxpacket << 16);
-
- dev_dbg(imx21->dev, "Queuing etd %d for DMEM\n", etd_num);
- debug_urb_queued_for_dmem(imx21, urb);
- list_add_tail(&etd->queue, &imx21->queue_for_dmem);
- return;
- }
-
- etd_writel(imx21, etd_num, 1,
- (((u32) etd->dmem_offset + (u32) maxpacket) << DW1_YBUFSRTAD) |
- (u32) etd->dmem_offset);
-
- urb_priv->active = 1;
-
- /* enable the ETD to kick off transfer */
- dev_vdbg(imx21->dev, "Activating etd %d for %d bytes %s\n",
- etd_num, count, dir != TD_DIR_IN ? "out" : "in");
- activate_etd(imx21, etd_num, dir);
-
-}
-
-static void nonisoc_etd_done(struct usb_hcd *hcd, int etd_num)
-{
- struct imx21 *imx21 = hcd_to_imx21(hcd);
- struct etd_priv *etd = &imx21->etd[etd_num];
- struct urb *urb = etd->urb;
- u32 etd_mask = 1 << etd_num;
- struct urb_priv *urb_priv = urb->hcpriv;
- int dir;
- int cc;
- u32 bytes_xfrd;
- int etd_done;
-
- disactivate_etd(imx21, etd_num);
-
- dir = (etd_readl(imx21, etd_num, 0) >> DW0_DIRECT) & 0x3;
- cc = (etd_readl(imx21, etd_num, 2) >> DW2_COMPCODE) & 0xf;
- bytes_xfrd = etd->len - (etd_readl(imx21, etd_num, 3) & 0x1fffff);
-
- /* save toggle carry */
- usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
- usb_pipeout(urb->pipe),
- (etd_readl(imx21, etd_num, 0) >> DW0_TOGCRY) & 0x1);
-
- if (dir == TD_DIR_IN) {
- clear_toggle_bit(imx21, USBH_XFILLSTAT, etd_mask);
- clear_toggle_bit(imx21, USBH_YFILLSTAT, etd_mask);
-
- if (etd->bounce_buffer) {
- memcpy(etd->cpu_buffer, etd->bounce_buffer, bytes_xfrd);
- dma_unmap_single(imx21->dev,
- etd->dma_handle, etd->len, DMA_FROM_DEVICE);
- } else if (!etd->dma_handle && bytes_xfrd) {/* PIO */
- memcpy_fromio(etd->cpu_buffer,
- imx21->regs + USBOTG_DMEM + etd->dmem_offset,
- bytes_xfrd);
- }
- }
-
- kfree(etd->bounce_buffer);
- etd->bounce_buffer = NULL;
- free_dmem(imx21, etd);
-
- urb->error_count = 0;
- if (!(urb->transfer_flags & URB_SHORT_NOT_OK)
- && (cc == TD_DATAUNDERRUN))
- cc = TD_CC_NOERROR;
-
- if (cc != 0)
- dev_vdbg(imx21->dev, "cc is 0x%x\n", cc);
-
- etd_done = (cc_to_error[cc] != 0); /* stop if error */
-
- switch (usb_pipetype(urb->pipe)) {
- case PIPE_CONTROL:
- switch (urb_priv->state) {
- case US_CTRL_SETUP:
- if (urb->transfer_buffer_length > 0)
- urb_priv->state = US_CTRL_DATA;
- else
- urb_priv->state = US_CTRL_ACK;
- break;
- case US_CTRL_DATA:
- urb->actual_length += bytes_xfrd;
- urb_priv->state = US_CTRL_ACK;
- break;
- case US_CTRL_ACK:
- etd_done = 1;
- break;
- default:
- dev_err(imx21->dev,
- "Invalid pipe state %d\n", urb_priv->state);
- etd_done = 1;
- break;
- }
- break;
-
- case PIPE_BULK:
- urb->actual_length += bytes_xfrd;
- if ((urb_priv->state == US_BULK)
- && (urb->transfer_flags & URB_ZERO_PACKET)
- && urb->transfer_buffer_length > 0
- && ((urb->transfer_buffer_length %
- usb_maxpacket(urb->dev, urb->pipe,
- usb_pipeout(urb->pipe))) == 0)) {
- /* need a 0-packet */
- urb_priv->state = US_BULK0;
- } else {
- etd_done = 1;
- }
- break;
-
- case PIPE_INTERRUPT:
- urb->actual_length += bytes_xfrd;
- etd_done = 1;
- break;
- }
-
- if (etd_done)
- nonisoc_urb_completed_for_etd(imx21, etd, cc_to_error[cc]);
- else {
- dev_vdbg(imx21->dev, "next state=%d\n", urb_priv->state);
- schedule_nonisoc_etd(imx21, urb);
- }
-}
-
-
-static struct ep_priv *alloc_ep(void)
-{
- int i;
- struct ep_priv *ep_priv;
-
- ep_priv = kzalloc(sizeof(struct ep_priv), GFP_ATOMIC);
- if (!ep_priv)
- return NULL;
-
- for (i = 0; i < NUM_ISO_ETDS; ++i)
- ep_priv->etd[i] = -1;
-
- return ep_priv;
-}
-
-static int imx21_hc_urb_enqueue(struct usb_hcd *hcd,
- struct urb *urb, gfp_t mem_flags)
-{
- struct imx21 *imx21 = hcd_to_imx21(hcd);
- struct usb_host_endpoint *ep = urb->ep;
- struct urb_priv *urb_priv;
- struct ep_priv *ep_priv;
- struct etd_priv *etd;
- int ret;
- unsigned long flags;
-
- dev_vdbg(imx21->dev,
- "enqueue urb=%p ep=%p len=%d "
- "buffer=%p dma=%pad setupBuf=%p setupDma=%pad\n",
- urb, ep,
- urb->transfer_buffer_length,
- urb->transfer_buffer, &urb->transfer_dma,
- urb->setup_packet, &urb->setup_dma);
-
- if (usb_pipeisoc(urb->pipe))
- return imx21_hc_urb_enqueue_isoc(hcd, ep, urb, mem_flags);
-
- urb_priv = kzalloc(sizeof(struct urb_priv), mem_flags);
- if (!urb_priv)
- return -ENOMEM;
-
- spin_lock_irqsave(&imx21->lock, flags);
-
- ep_priv = ep->hcpriv;
- if (ep_priv == NULL) {
- ep_priv = alloc_ep();
- if (!ep_priv) {
- ret = -ENOMEM;
- goto failed_alloc_ep;
- }
- ep->hcpriv = ep_priv;
- ep_priv->ep = ep;
- }
-
- ret = usb_hcd_link_urb_to_ep(hcd, urb);
- if (ret)
- goto failed_link;
-
- urb->status = -EINPROGRESS;
- urb->actual_length = 0;
- urb->error_count = 0;
- urb->hcpriv = urb_priv;
- urb_priv->ep = ep;
-
- switch (usb_pipetype(urb->pipe)) {
- case PIPE_CONTROL:
- urb_priv->state = US_CTRL_SETUP;
- break;
- case PIPE_BULK:
- urb_priv->state = US_BULK;
- break;
- }
-
- debug_urb_submitted(imx21, urb);
- if (ep_priv->etd[0] < 0) {
- if (ep_priv->waiting_etd) {
- dev_dbg(imx21->dev,
- "no ETD available already queued %p\n",
- ep_priv);
- debug_urb_queued_for_etd(imx21, urb);
- goto out;
- }
- ep_priv->etd[0] = alloc_etd(imx21);
- if (ep_priv->etd[0] < 0) {
- dev_dbg(imx21->dev,
- "no ETD available queueing %p\n", ep_priv);
- debug_urb_queued_for_etd(imx21, urb);
- list_add_tail(&ep_priv->queue, &imx21->queue_for_etd);
- ep_priv->waiting_etd = 1;
- goto out;
- }
- }
-
- /* Schedule if no URB already active for this endpoint */
- etd = &imx21->etd[ep_priv->etd[0]];
- if (etd->urb == NULL) {
- DEBUG_LOG_FRAME(imx21, etd, last_req);
- schedule_nonisoc_etd(imx21, urb);
- }
-
-out:
- spin_unlock_irqrestore(&imx21->lock, flags);
- return 0;
-
-failed_link:
-failed_alloc_ep:
- spin_unlock_irqrestore(&imx21->lock, flags);
- kfree(urb_priv);
- return ret;
-}
-
-static int imx21_hc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
- int status)
-{
- struct imx21 *imx21 = hcd_to_imx21(hcd);
- unsigned long flags;
- struct usb_host_endpoint *ep;
- struct ep_priv *ep_priv;
- struct urb_priv *urb_priv = urb->hcpriv;
- int ret = -EINVAL;
-
- dev_vdbg(imx21->dev, "dequeue urb=%p iso=%d status=%d\n",
- urb, usb_pipeisoc(urb->pipe), status);
-
- spin_lock_irqsave(&imx21->lock, flags);
-
- ret = usb_hcd_check_unlink_urb(hcd, urb, status);
- if (ret)
- goto fail;
- ep = urb_priv->ep;
- ep_priv = ep->hcpriv;
-
- debug_urb_unlinked(imx21, urb);
-
- if (usb_pipeisoc(urb->pipe)) {
- dequeue_isoc_urb(imx21, urb, ep_priv);
- schedule_isoc_etds(hcd, ep);
- } else if (urb_priv->active) {
- int etd_num = ep_priv->etd[0];
- if (etd_num != -1) {
- struct etd_priv *etd = &imx21->etd[etd_num];
-
- disactivate_etd(imx21, etd_num);
- free_dmem(imx21, etd);
- etd->urb = NULL;
- kfree(etd->bounce_buffer);
- etd->bounce_buffer = NULL;
- }
- }
-
- urb_done(hcd, urb, status);
-
- spin_unlock_irqrestore(&imx21->lock, flags);
- return 0;
-
-fail:
- spin_unlock_irqrestore(&imx21->lock, flags);
- return ret;
-}
-
-/* =========================================== */
-/* Interrupt dispatch */
-/* =========================================== */
-
-static void process_etds(struct usb_hcd *hcd, struct imx21 *imx21, int sof)
-{
- int etd_num;
- int enable_sof_int = 0;
- unsigned long flags;
-
- spin_lock_irqsave(&imx21->lock, flags);
-
- for (etd_num = 0; etd_num < USB_NUM_ETD; etd_num++) {
- u32 etd_mask = 1 << etd_num;
- u32 enabled = readl(imx21->regs + USBH_ETDENSET) & etd_mask;
- u32 done = readl(imx21->regs + USBH_ETDDONESTAT) & etd_mask;
- struct etd_priv *etd = &imx21->etd[etd_num];
-
-
- if (done) {
- DEBUG_LOG_FRAME(imx21, etd, last_int);
- } else {
-/*
- * Kludge warning!
- *
- * When multiple transfers are using the bus we sometimes get into a state
- * where the transfer has completed (the CC field of the ETD is != 0x0F),
- * the ETD has self disabled but the ETDDONESTAT flag is not set
- * (and hence no interrupt occurs).
- * This causes the transfer in question to hang.
- * The kludge below checks for this condition at each SOF and processes any
- * blocked ETDs (after an arbitrary 10 frame wait)
- *
- * With a single active transfer the usbtest test suite will run for days
- * without the kludge.
- * With other bus activity (eg mass storage) even just test1 will hang without
- * the kludge.
- */
- u32 dword0;
- int cc;
-
- if (etd->active_count && !enabled) /* suspicious... */
- enable_sof_int = 1;
-
- if (!sof || enabled || !etd->active_count)
- continue;
-
- cc = etd_readl(imx21, etd_num, 2) >> DW2_COMPCODE;
- if (cc == TD_NOTACCESSED)
- continue;
-
- if (++etd->active_count < 10)
- continue;
-
- dword0 = etd_readl(imx21, etd_num, 0);
- dev_dbg(imx21->dev,
- "unblock ETD %d dev=0x%X ep=0x%X cc=0x%02X!\n",
- etd_num, dword0 & 0x7F,
- (dword0 >> DW0_ENDPNT) & 0x0F,
- cc);
-
-#ifdef DEBUG
- dev_dbg(imx21->dev,
- "frame: act=%d disact=%d"
- " int=%d req=%d cur=%d\n",
- etd->activated_frame,
- etd->disactivated_frame,
- etd->last_int_frame,
- etd->last_req_frame,
- readl(imx21->regs + USBH_FRMNUB));
- imx21->debug_unblocks++;
-#endif
- etd->active_count = 0;
-/* End of kludge */
- }
-
- if (etd->ep == NULL || etd->urb == NULL) {
- dev_dbg(imx21->dev,
- "Interrupt for unexpected etd %d"
- " ep=%p urb=%p\n",
- etd_num, etd->ep, etd->urb);
- disactivate_etd(imx21, etd_num);
- continue;
- }
-
- if (usb_pipeisoc(etd->urb->pipe))
- isoc_etd_done(hcd, etd_num);
- else
- nonisoc_etd_done(hcd, etd_num);
- }
-
- /* only enable SOF interrupt if it may be needed for the kludge */
- if (enable_sof_int)
- set_register_bits(imx21, USBH_SYSIEN, USBH_SYSIEN_SOFINT);
- else
- clear_register_bits(imx21, USBH_SYSIEN, USBH_SYSIEN_SOFINT);
-
-
- spin_unlock_irqrestore(&imx21->lock, flags);
-}
-
-static irqreturn_t imx21_irq(struct usb_hcd *hcd)
-{
- struct imx21 *imx21 = hcd_to_imx21(hcd);
- u32 ints = readl(imx21->regs + USBH_SYSISR);
-
- if (ints & USBH_SYSIEN_HERRINT)
- dev_dbg(imx21->dev, "Scheduling error\n");
-
- if (ints & USBH_SYSIEN_SORINT)
- dev_dbg(imx21->dev, "Scheduling overrun\n");
-
- if (ints & (USBH_SYSISR_DONEINT | USBH_SYSISR_SOFINT))
- process_etds(hcd, imx21, ints & USBH_SYSISR_SOFINT);
-
- writel(ints, imx21->regs + USBH_SYSISR);
- return IRQ_HANDLED;
-}
-
-static void imx21_hc_endpoint_disable(struct usb_hcd *hcd,
- struct usb_host_endpoint *ep)
-{
- struct imx21 *imx21 = hcd_to_imx21(hcd);
- unsigned long flags;
- struct ep_priv *ep_priv;
- int i;
-
- if (ep == NULL)
- return;
-
- spin_lock_irqsave(&imx21->lock, flags);
- ep_priv = ep->hcpriv;
- dev_vdbg(imx21->dev, "disable ep=%p, ep->hcpriv=%p\n", ep, ep_priv);
-
- if (!list_empty(&ep->urb_list))
- dev_dbg(imx21->dev, "ep's URB list is not empty\n");
-
- if (ep_priv != NULL) {
- for (i = 0; i < NUM_ISO_ETDS; i++) {
- if (ep_priv->etd[i] > -1)
- dev_dbg(imx21->dev, "free etd %d for disable\n",
- ep_priv->etd[i]);
-
- free_etd(imx21, ep_priv->etd[i]);
- }
- kfree(ep_priv);
- ep->hcpriv = NULL;
- }
-
- for (i = 0; i < USB_NUM_ETD; i++) {
- if (imx21->etd[i].alloc && imx21->etd[i].ep == ep) {
- dev_err(imx21->dev,
- "Active etd %d for disabled ep=%p!\n", i, ep);
- free_etd(imx21, i);
- }
- }
- free_epdmem(imx21, ep);
- spin_unlock_irqrestore(&imx21->lock, flags);
-}
-
-/* =========================================== */
-/* Hub handling */
-/* =========================================== */
-
-static int get_hub_descriptor(struct usb_hcd *hcd,
- struct usb_hub_descriptor *desc)
-{
- struct imx21 *imx21 = hcd_to_imx21(hcd);
- desc->bDescriptorType = USB_DT_HUB; /* HUB descriptor */
- desc->bHubContrCurrent = 0;
-
- desc->bNbrPorts = readl(imx21->regs + USBH_ROOTHUBA)
- & USBH_ROOTHUBA_NDNSTMPRT_MASK;
- desc->bDescLength = 9;
- desc->bPwrOn2PwrGood = 0;
- desc->wHubCharacteristics = (__force __u16) cpu_to_le16(
- HUB_CHAR_NO_LPSM | /* No power switching */
- HUB_CHAR_NO_OCPM); /* No over current protection */
-
- desc->u.hs.DeviceRemovable[0] = 1 << 1;
- desc->u.hs.DeviceRemovable[1] = ~0;
- return 0;
-}
-
-static int imx21_hc_hub_status_data(struct usb_hcd *hcd, char *buf)
-{
- struct imx21 *imx21 = hcd_to_imx21(hcd);
- int ports;
- int changed = 0;
- int i;
- unsigned long flags;
-
- spin_lock_irqsave(&imx21->lock, flags);
- ports = readl(imx21->regs + USBH_ROOTHUBA)
- & USBH_ROOTHUBA_NDNSTMPRT_MASK;
- if (ports > 7) {
- ports = 7;
- dev_err(imx21->dev, "ports %d > 7\n", ports);
- }
- for (i = 0; i < ports; i++) {
- if (readl(imx21->regs + USBH_PORTSTAT(i)) &
- (USBH_PORTSTAT_CONNECTSC |
- USBH_PORTSTAT_PRTENBLSC |
- USBH_PORTSTAT_PRTSTATSC |
- USBH_PORTSTAT_OVRCURIC |
- USBH_PORTSTAT_PRTRSTSC)) {
-
- changed = 1;
- buf[0] |= 1 << (i + 1);
- }
- }
- spin_unlock_irqrestore(&imx21->lock, flags);
-
- if (changed)
- dev_info(imx21->dev, "Hub status changed\n");
- return changed;
-}
-
-static int imx21_hc_hub_control(struct usb_hcd *hcd,
- u16 typeReq,
- u16 wValue, u16 wIndex, char *buf, u16 wLength)
-{
- struct imx21 *imx21 = hcd_to_imx21(hcd);
- int rc = 0;
- u32 status_write = 0;
-
- switch (typeReq) {
- case ClearHubFeature:
- dev_dbg(imx21->dev, "ClearHubFeature\n");
- switch (wValue) {
- case C_HUB_OVER_CURRENT:
- dev_dbg(imx21->dev, " OVER_CURRENT\n");
- break;
- case C_HUB_LOCAL_POWER:
- dev_dbg(imx21->dev, " LOCAL_POWER\n");
- break;
- default:
- dev_dbg(imx21->dev, " unknown\n");
- rc = -EINVAL;
- break;
- }
- break;
-
- case ClearPortFeature:
- dev_dbg(imx21->dev, "ClearPortFeature\n");
- switch (wValue) {
- case USB_PORT_FEAT_ENABLE:
- dev_dbg(imx21->dev, " ENABLE\n");
- status_write = USBH_PORTSTAT_CURCONST;
- break;
- case USB_PORT_FEAT_SUSPEND:
- dev_dbg(imx21->dev, " SUSPEND\n");
- status_write = USBH_PORTSTAT_PRTOVRCURI;
- break;
- case USB_PORT_FEAT_POWER:
- dev_dbg(imx21->dev, " POWER\n");
- status_write = USBH_PORTSTAT_LSDEVCON;
- break;
- case USB_PORT_FEAT_C_ENABLE:
- dev_dbg(imx21->dev, " C_ENABLE\n");
- status_write = USBH_PORTSTAT_PRTENBLSC;
- break;
- case USB_PORT_FEAT_C_SUSPEND:
- dev_dbg(imx21->dev, " C_SUSPEND\n");
- status_write = USBH_PORTSTAT_PRTSTATSC;
- break;
- case USB_PORT_FEAT_C_CONNECTION:
- dev_dbg(imx21->dev, " C_CONNECTION\n");
- status_write = USBH_PORTSTAT_CONNECTSC;
- break;
- case USB_PORT_FEAT_C_OVER_CURRENT:
- dev_dbg(imx21->dev, " C_OVER_CURRENT\n");
- status_write = USBH_PORTSTAT_OVRCURIC;
- break;
- case USB_PORT_FEAT_C_RESET:
- dev_dbg(imx21->dev, " C_RESET\n");
- status_write = USBH_PORTSTAT_PRTRSTSC;
- break;
- default:
- dev_dbg(imx21->dev, " unknown\n");
- rc = -EINVAL;
- break;
- }
-
- break;
-
- case GetHubDescriptor:
- dev_dbg(imx21->dev, "GetHubDescriptor\n");
- rc = get_hub_descriptor(hcd, (void *)buf);
- break;
-
- case GetHubStatus:
- dev_dbg(imx21->dev, " GetHubStatus\n");
- *(__le32 *) buf = 0;
- break;
-
- case GetPortStatus:
- dev_dbg(imx21->dev, "GetPortStatus: port: %d, 0x%x\n",
- wIndex, USBH_PORTSTAT(wIndex - 1));
- *(__le32 *) buf = readl(imx21->regs +
- USBH_PORTSTAT(wIndex - 1));
- break;
-
- case SetHubFeature:
- dev_dbg(imx21->dev, "SetHubFeature\n");
- switch (wValue) {
- case C_HUB_OVER_CURRENT:
- dev_dbg(imx21->dev, " OVER_CURRENT\n");
- break;
-
- case C_HUB_LOCAL_POWER:
- dev_dbg(imx21->dev, " LOCAL_POWER\n");
- break;
- default:
- dev_dbg(imx21->dev, " unknown\n");
- rc = -EINVAL;
- break;
- }
-
- break;
-
- case SetPortFeature:
- dev_dbg(imx21->dev, "SetPortFeature\n");
- switch (wValue) {
- case USB_PORT_FEAT_SUSPEND:
- dev_dbg(imx21->dev, " SUSPEND\n");
- status_write = USBH_PORTSTAT_PRTSUSPST;
- break;
- case USB_PORT_FEAT_POWER:
- dev_dbg(imx21->dev, " POWER\n");
- status_write = USBH_PORTSTAT_PRTPWRST;
- break;
- case USB_PORT_FEAT_RESET:
- dev_dbg(imx21->dev, " RESET\n");
- status_write = USBH_PORTSTAT_PRTRSTST;
- break;
- default:
- dev_dbg(imx21->dev, " unknown\n");
- rc = -EINVAL;
- break;
- }
- break;
-
- default:
- dev_dbg(imx21->dev, " unknown\n");
- rc = -EINVAL;
- break;
- }
-
- if (status_write)
- writel(status_write, imx21->regs + USBH_PORTSTAT(wIndex - 1));
- return rc;
-}
-
-/* =========================================== */
-/* Host controller management */
-/* =========================================== */
-
-static int imx21_hc_reset(struct usb_hcd *hcd)
-{
- struct imx21 *imx21 = hcd_to_imx21(hcd);
- unsigned long timeout;
- unsigned long flags;
-
- spin_lock_irqsave(&imx21->lock, flags);
-
- /* Reset the Host controller modules */
- writel(USBOTG_RST_RSTCTRL | USBOTG_RST_RSTRH |
- USBOTG_RST_RSTHSIE | USBOTG_RST_RSTHC,
- imx21->regs + USBOTG_RST_CTRL);
-
- /* Wait for reset to finish */
- timeout = jiffies + HZ;
- while (readl(imx21->regs + USBOTG_RST_CTRL) != 0) {
- if (time_after(jiffies, timeout)) {
- spin_unlock_irqrestore(&imx21->lock, flags);
- dev_err(imx21->dev, "timeout waiting for reset\n");
- return -ETIMEDOUT;
- }
- spin_unlock_irq(&imx21->lock);
- schedule_timeout_uninterruptible(1);
- spin_lock_irq(&imx21->lock);
- }
- spin_unlock_irqrestore(&imx21->lock, flags);
- return 0;
-}
-
-static int imx21_hc_start(struct usb_hcd *hcd)
-{
- struct imx21 *imx21 = hcd_to_imx21(hcd);
- unsigned long flags;
- int i, j;
- u32 hw_mode = USBOTG_HWMODE_CRECFG_HOST;
- u32 usb_control = 0;
-
- hw_mode |= ((imx21->pdata->host_xcvr << USBOTG_HWMODE_HOSTXCVR_SHIFT) &
- USBOTG_HWMODE_HOSTXCVR_MASK);
- hw_mode |= ((imx21->pdata->otg_xcvr << USBOTG_HWMODE_OTGXCVR_SHIFT) &
- USBOTG_HWMODE_OTGXCVR_MASK);
-
- if (imx21->pdata->host1_txenoe)
- usb_control |= USBCTRL_HOST1_TXEN_OE;
-
- if (!imx21->pdata->host1_xcverless)
- usb_control |= USBCTRL_HOST1_BYP_TLL;
-
- if (imx21->pdata->otg_ext_xcvr)
- usb_control |= USBCTRL_OTC_RCV_RXDP;
-
-
- spin_lock_irqsave(&imx21->lock, flags);
-
- writel((USBOTG_CLK_CTRL_HST | USBOTG_CLK_CTRL_MAIN),
- imx21->regs + USBOTG_CLK_CTRL);
- writel(hw_mode, imx21->regs + USBOTG_HWMODE);
- writel(usb_control, imx21->regs + USBCTRL);
- writel(USB_MISCCONTROL_SKPRTRY | USB_MISCCONTROL_ARBMODE,
- imx21->regs + USB_MISCCONTROL);
-
- /* Clear the ETDs */
- for (i = 0; i < USB_NUM_ETD; i++)
- for (j = 0; j < 4; j++)
- etd_writel(imx21, i, j, 0);
-
- /* Take the HC out of reset */
- writel(USBH_HOST_CTRL_HCUSBSTE_OPERATIONAL | USBH_HOST_CTRL_CTLBLKSR_1,
- imx21->regs + USBH_HOST_CTRL);
-
- /* Enable ports */
- if (imx21->pdata->enable_otg_host)
- writel(USBH_PORTSTAT_PRTPWRST | USBH_PORTSTAT_PRTENABST,
- imx21->regs + USBH_PORTSTAT(0));
-
- if (imx21->pdata->enable_host1)
- writel(USBH_PORTSTAT_PRTPWRST | USBH_PORTSTAT_PRTENABST,
- imx21->regs + USBH_PORTSTAT(1));
-
- if (imx21->pdata->enable_host2)
- writel(USBH_PORTSTAT_PRTPWRST | USBH_PORTSTAT_PRTENABST,
- imx21->regs + USBH_PORTSTAT(2));
-
-
- hcd->state = HC_STATE_RUNNING;
-
- /* Enable host controller interrupts */
- set_register_bits(imx21, USBH_SYSIEN,
- USBH_SYSIEN_HERRINT |
- USBH_SYSIEN_DONEINT | USBH_SYSIEN_SORINT);
- set_register_bits(imx21, USBOTG_CINT_STEN, USBOTG_HCINT);
-
- spin_unlock_irqrestore(&imx21->lock, flags);
-
- return 0;
-}
-
-static void imx21_hc_stop(struct usb_hcd *hcd)
-{
- struct imx21 *imx21 = hcd_to_imx21(hcd);
- unsigned long flags;
-
- spin_lock_irqsave(&imx21->lock, flags);
-
- writel(0, imx21->regs + USBH_SYSIEN);
- clear_register_bits(imx21, USBOTG_CINT_STEN, USBOTG_HCINT);
- clear_register_bits(imx21, USBOTG_CLK_CTRL_HST | USBOTG_CLK_CTRL_MAIN,
- USBOTG_CLK_CTRL);
- spin_unlock_irqrestore(&imx21->lock, flags);
-}
-
-/* =========================================== */
-/* Driver glue */
-/* =========================================== */
-
-static const struct hc_driver imx21_hc_driver = {
- .description = hcd_name,
- .product_desc = "IMX21 USB Host Controller",
- .hcd_priv_size = sizeof(struct imx21),
-
- .flags = HCD_DMA | HCD_USB11,
- .irq = imx21_irq,
-
- .reset = imx21_hc_reset,
- .start = imx21_hc_start,
- .stop = imx21_hc_stop,
-
- /* I/O requests */
- .urb_enqueue = imx21_hc_urb_enqueue,
- .urb_dequeue = imx21_hc_urb_dequeue,
- .endpoint_disable = imx21_hc_endpoint_disable,
-
- /* scheduling support */
- .get_frame_number = imx21_hc_get_frame,
-
- /* Root hub support */
- .hub_status_data = imx21_hc_hub_status_data,
- .hub_control = imx21_hc_hub_control,
-
-};
-
-static struct mx21_usbh_platform_data default_pdata = {
- .host_xcvr = MX21_USBXCVR_TXDIF_RXDIF,
- .otg_xcvr = MX21_USBXCVR_TXDIF_RXDIF,
- .enable_host1 = 1,
- .enable_host2 = 1,
- .enable_otg_host = 1,
-
-};
-
-static int imx21_remove(struct platform_device *pdev)
-{
- struct usb_hcd *hcd = platform_get_drvdata(pdev);
- struct imx21 *imx21 = hcd_to_imx21(hcd);
- struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-
- remove_debug_files(imx21);
- usb_remove_hcd(hcd);
-
- if (res != NULL) {
- clk_disable_unprepare(imx21->clk);
- clk_put(imx21->clk);
- iounmap(imx21->regs);
- release_mem_region(res->start, resource_size(res));
- }
-
- kfree(hcd);
- return 0;
-}
-
-
-static int imx21_probe(struct platform_device *pdev)
-{
- struct usb_hcd *hcd;
- struct imx21 *imx21;
- struct resource *res;
- int ret;
- int irq;
-
- printk(KERN_INFO "%s\n", imx21_hc_driver.product_desc);
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENODEV;
- irq = platform_get_irq(pdev, 0);
- if (irq < 0)
- return irq;
-
- hcd = usb_create_hcd(&imx21_hc_driver,
- &pdev->dev, dev_name(&pdev->dev));
- if (hcd == NULL) {
- dev_err(&pdev->dev, "Cannot create hcd (%s)\n",
- dev_name(&pdev->dev));
- return -ENOMEM;
- }
-
- imx21 = hcd_to_imx21(hcd);
- imx21->hcd = hcd;
- imx21->dev = &pdev->dev;
- imx21->pdata = dev_get_platdata(&pdev->dev);
- if (!imx21->pdata)
- imx21->pdata = &default_pdata;
-
- spin_lock_init(&imx21->lock);
- INIT_LIST_HEAD(&imx21->dmem_list);
- INIT_LIST_HEAD(&imx21->queue_for_etd);
- INIT_LIST_HEAD(&imx21->queue_for_dmem);
- create_debug_files(imx21);
-
- res = request_mem_region(res->start, resource_size(res), hcd_name);
- if (!res) {
- ret = -EBUSY;
- goto failed_request_mem;
- }
-
- imx21->regs = ioremap(res->start, resource_size(res));
- if (imx21->regs == NULL) {
- dev_err(imx21->dev, "Cannot map registers\n");
- ret = -ENOMEM;
- goto failed_ioremap;
- }
-
- /* Enable clocks source */
- imx21->clk = clk_get(imx21->dev, NULL);
- if (IS_ERR(imx21->clk)) {
- dev_err(imx21->dev, "no clock found\n");
- ret = PTR_ERR(imx21->clk);
- goto failed_clock_get;
- }
-
- ret = clk_set_rate(imx21->clk, clk_round_rate(imx21->clk, 48000000));
- if (ret)
- goto failed_clock_set;
- ret = clk_prepare_enable(imx21->clk);
- if (ret)
- goto failed_clock_enable;
-
- dev_info(imx21->dev, "Hardware HC revision: 0x%02X\n",
- (readl(imx21->regs + USBOTG_HWMODE) >> 16) & 0xFF);
-
- ret = usb_add_hcd(hcd, irq, 0);
- if (ret != 0) {
- dev_err(imx21->dev, "usb_add_hcd() returned %d\n", ret);
- goto failed_add_hcd;
- }
- device_wakeup_enable(hcd->self.controller);
-
- return 0;
-
-failed_add_hcd:
- clk_disable_unprepare(imx21->clk);
-failed_clock_enable:
-failed_clock_set:
- clk_put(imx21->clk);
-failed_clock_get:
- iounmap(imx21->regs);
-failed_ioremap:
- release_mem_region(res->start, resource_size(res));
-failed_request_mem:
- remove_debug_files(imx21);
- usb_put_hcd(hcd);
- return ret;
-}
-
-static struct platform_driver imx21_hcd_driver = {
- .driver = {
- .name = hcd_name,
- },
- .probe = imx21_probe,
- .remove = imx21_remove,
- .suspend = NULL,
- .resume = NULL,
-};
-
-module_platform_driver(imx21_hcd_driver);
-
-MODULE_DESCRIPTION("i.MX21 USB Host controller");
-MODULE_AUTHOR("Martin Fuzzey");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:imx21-hcd");
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * Macros and prototypes for i.MX21
- *
- * Copyright (C) 2006 Loping Dog Embedded Systems
- * Copyright (C) 2009 Martin Fuzzey
- * Originally written by Jay Monkman <jtm@lopingdog.com>
- * Ported to 2.6.30, debugged and enhanced by Martin Fuzzey
- */
-
-#ifndef __LINUX_IMX21_HCD_H__
-#define __LINUX_IMX21_HCD_H__
-
-#ifdef CONFIG_DYNAMIC_DEBUG
-#define DEBUG
-#endif
-
-#include <linux/platform_data/usb-mx2.h>
-
-#define NUM_ISO_ETDS 2
-#define USB_NUM_ETD 32
-#define DMEM_SIZE 4096
-
-/* Register definitions */
-#define USBOTG_HWMODE 0x00
-#define USBOTG_HWMODE_ANASDBEN (1 << 14)
-#define USBOTG_HWMODE_OTGXCVR_SHIFT 6
-#define USBOTG_HWMODE_OTGXCVR_MASK (3 << 6)
-#define USBOTG_HWMODE_OTGXCVR_TD_RD (0 << 6)
-#define USBOTG_HWMODE_OTGXCVR_TS_RD (2 << 6)
-#define USBOTG_HWMODE_OTGXCVR_TD_RS (1 << 6)
-#define USBOTG_HWMODE_OTGXCVR_TS_RS (3 << 6)
-#define USBOTG_HWMODE_HOSTXCVR_SHIFT 4
-#define USBOTG_HWMODE_HOSTXCVR_MASK (3 << 4)
-#define USBOTG_HWMODE_HOSTXCVR_TD_RD (0 << 4)
-#define USBOTG_HWMODE_HOSTXCVR_TS_RD (2 << 4)
-#define USBOTG_HWMODE_HOSTXCVR_TD_RS (1 << 4)
-#define USBOTG_HWMODE_HOSTXCVR_TS_RS (3 << 4)
-#define USBOTG_HWMODE_CRECFG_MASK (3 << 0)
-#define USBOTG_HWMODE_CRECFG_HOST (1 << 0)
-#define USBOTG_HWMODE_CRECFG_FUNC (2 << 0)
-#define USBOTG_HWMODE_CRECFG_HNP (3 << 0)
-
-#define USBOTG_CINT_STAT 0x04
-#define USBOTG_CINT_STEN 0x08
-#define USBOTG_ASHNPINT (1 << 5)
-#define USBOTG_ASFCINT (1 << 4)
-#define USBOTG_ASHCINT (1 << 3)
-#define USBOTG_SHNPINT (1 << 2)
-#define USBOTG_FCINT (1 << 1)
-#define USBOTG_HCINT (1 << 0)
-
-#define USBOTG_CLK_CTRL 0x0c
-#define USBOTG_CLK_CTRL_FUNC (1 << 2)
-#define USBOTG_CLK_CTRL_HST (1 << 1)
-#define USBOTG_CLK_CTRL_MAIN (1 << 0)
-
-#define USBOTG_RST_CTRL 0x10
-#define USBOTG_RST_RSTI2C (1 << 15)
-#define USBOTG_RST_RSTCTRL (1 << 5)
-#define USBOTG_RST_RSTFC (1 << 4)
-#define USBOTG_RST_RSTFSKE (1 << 3)
-#define USBOTG_RST_RSTRH (1 << 2)
-#define USBOTG_RST_RSTHSIE (1 << 1)
-#define USBOTG_RST_RSTHC (1 << 0)
-
-#define USBOTG_FRM_INTVL 0x14
-#define USBOTG_FRM_REMAIN 0x18
-#define USBOTG_HNP_CSR 0x1c
-#define USBOTG_HNP_ISR 0x2c
-#define USBOTG_HNP_IEN 0x30
-
-#define USBOTG_I2C_TXCVR_REG(x) (0x100 + (x))
-#define USBOTG_I2C_XCVR_DEVAD 0x118
-#define USBOTG_I2C_SEQ_OP_REG 0x119
-#define USBOTG_I2C_SEQ_RD_STARTAD 0x11a
-#define USBOTG_I2C_OP_CTRL_REG 0x11b
-#define USBOTG_I2C_SCLK_TO_SCK_HPER 0x11e
-#define USBOTG_I2C_MASTER_INT_REG 0x11f
-
-#define USBH_HOST_CTRL 0x80
-#define USBH_HOST_CTRL_HCRESET (1 << 31)
-#define USBH_HOST_CTRL_SCHDOVR(x) ((x) << 16)
-#define USBH_HOST_CTRL_RMTWUEN (1 << 4)
-#define USBH_HOST_CTRL_HCUSBSTE_RESET (0 << 2)
-#define USBH_HOST_CTRL_HCUSBSTE_RESUME (1 << 2)
-#define USBH_HOST_CTRL_HCUSBSTE_OPERATIONAL (2 << 2)
-#define USBH_HOST_CTRL_HCUSBSTE_SUSPEND (3 << 2)
-#define USBH_HOST_CTRL_CTLBLKSR_1 (0 << 0)
-#define USBH_HOST_CTRL_CTLBLKSR_2 (1 << 0)
-#define USBH_HOST_CTRL_CTLBLKSR_3 (2 << 0)
-#define USBH_HOST_CTRL_CTLBLKSR_4 (3 << 0)
-
-#define USBH_SYSISR 0x88
-#define USBH_SYSISR_PSCINT (1 << 6)
-#define USBH_SYSISR_FMOFINT (1 << 5)
-#define USBH_SYSISR_HERRINT (1 << 4)
-#define USBH_SYSISR_RESDETINT (1 << 3)
-#define USBH_SYSISR_SOFINT (1 << 2)
-#define USBH_SYSISR_DONEINT (1 << 1)
-#define USBH_SYSISR_SORINT (1 << 0)
-
-#define USBH_SYSIEN 0x8c
-#define USBH_SYSIEN_PSCINT (1 << 6)
-#define USBH_SYSIEN_FMOFINT (1 << 5)
-#define USBH_SYSIEN_HERRINT (1 << 4)
-#define USBH_SYSIEN_RESDETINT (1 << 3)
-#define USBH_SYSIEN_SOFINT (1 << 2)
-#define USBH_SYSIEN_DONEINT (1 << 1)
-#define USBH_SYSIEN_SORINT (1 << 0)
-
-#define USBH_XBUFSTAT 0x98
-#define USBH_YBUFSTAT 0x9c
-#define USBH_XYINTEN 0xa0
-#define USBH_XFILLSTAT 0xa8
-#define USBH_YFILLSTAT 0xac
-#define USBH_ETDENSET 0xc0
-#define USBH_ETDENCLR 0xc4
-#define USBH_IMMEDINT 0xcc
-#define USBH_ETDDONESTAT 0xd0
-#define USBH_ETDDONEEN 0xd4
-#define USBH_FRMNUB 0xe0
-#define USBH_LSTHRESH 0xe4
-
-#define USBH_ROOTHUBA 0xe8
-#define USBH_ROOTHUBA_PWRTOGOOD_MASK (0xff)
-#define USBH_ROOTHUBA_PWRTOGOOD_SHIFT (24)
-#define USBH_ROOTHUBA_NOOVRCURP (1 << 12)
-#define USBH_ROOTHUBA_OVRCURPM (1 << 11)
-#define USBH_ROOTHUBA_DEVTYPE (1 << 10)
-#define USBH_ROOTHUBA_PWRSWTMD (1 << 9)
-#define USBH_ROOTHUBA_NOPWRSWT (1 << 8)
-#define USBH_ROOTHUBA_NDNSTMPRT_MASK (0xff)
-
-#define USBH_ROOTHUBB 0xec
-#define USBH_ROOTHUBB_PRTPWRCM(x) (1 << ((x) + 16))
-#define USBH_ROOTHUBB_DEVREMOVE(x) (1 << (x))
-
-#define USBH_ROOTSTAT 0xf0
-#define USBH_ROOTSTAT_CLRRMTWUE (1 << 31)
-#define USBH_ROOTSTAT_OVRCURCHG (1 << 17)
-#define USBH_ROOTSTAT_DEVCONWUE (1 << 15)
-#define USBH_ROOTSTAT_OVRCURI (1 << 1)
-#define USBH_ROOTSTAT_LOCPWRS (1 << 0)
-
-#define USBH_PORTSTAT(x) (0xf4 + ((x) * 4))
-#define USBH_PORTSTAT_PRTRSTSC (1 << 20)
-#define USBH_PORTSTAT_OVRCURIC (1 << 19)
-#define USBH_PORTSTAT_PRTSTATSC (1 << 18)
-#define USBH_PORTSTAT_PRTENBLSC (1 << 17)
-#define USBH_PORTSTAT_CONNECTSC (1 << 16)
-#define USBH_PORTSTAT_LSDEVCON (1 << 9)
-#define USBH_PORTSTAT_PRTPWRST (1 << 8)
-#define USBH_PORTSTAT_PRTRSTST (1 << 4)
-#define USBH_PORTSTAT_PRTOVRCURI (1 << 3)
-#define USBH_PORTSTAT_PRTSUSPST (1 << 2)
-#define USBH_PORTSTAT_PRTENABST (1 << 1)
-#define USBH_PORTSTAT_CURCONST (1 << 0)
-
-#define USB_DMAREV 0x800
-#define USB_DMAINTSTAT 0x804
-#define USB_DMAINTSTAT_EPERR (1 << 1)
-#define USB_DMAINTSTAT_ETDERR (1 << 0)
-
-#define USB_DMAINTEN 0x808
-#define USB_DMAINTEN_EPERRINTEN (1 << 1)
-#define USB_DMAINTEN_ETDERRINTEN (1 << 0)
-
-#define USB_ETDDMAERSTAT 0x80c
-#define USB_EPDMAERSTAT 0x810
-#define USB_ETDDMAEN 0x820
-#define USB_EPDMAEN 0x824
-#define USB_ETDDMAXTEN 0x828
-#define USB_EPDMAXTEN 0x82c
-#define USB_ETDDMAENXYT 0x830
-#define USB_EPDMAENXYT 0x834
-#define USB_ETDDMABST4EN 0x838
-#define USB_EPDMABST4EN 0x83c
-
-#define USB_MISCCONTROL 0x840
-#define USB_MISCCONTROL_ISOPREVFRM (1 << 3)
-#define USB_MISCCONTROL_SKPRTRY (1 << 2)
-#define USB_MISCCONTROL_ARBMODE (1 << 1)
-#define USB_MISCCONTROL_FILTCC (1 << 0)
-
-#define USB_ETDDMACHANLCLR 0x848
-#define USB_EPDMACHANLCLR 0x84c
-#define USB_ETDSMSA(x) (0x900 + ((x) * 4))
-#define USB_EPSMSA(x) (0x980 + ((x) * 4))
-#define USB_ETDDMABUFPTR(x) (0xa00 + ((x) * 4))
-#define USB_EPDMABUFPTR(x) (0xa80 + ((x) * 4))
-
-#define USB_ETD_DWORD(x, w) (0x200 + ((x) * 16) + ((w) * 4))
-#define DW0_ADDRESS 0
-#define DW0_ENDPNT 7
-#define DW0_DIRECT 11
-#define DW0_SPEED 13
-#define DW0_FORMAT 14
-#define DW0_MAXPKTSIZ 16
-#define DW0_HALTED 27
-#define DW0_TOGCRY 28
-#define DW0_SNDNAK 30
-
-#define DW1_XBUFSRTAD 0
-#define DW1_YBUFSRTAD 16
-
-#define DW2_RTRYDELAY 0
-#define DW2_POLINTERV 0
-#define DW2_STARTFRM 0
-#define DW2_RELPOLPOS 8
-#define DW2_DIRPID 16
-#define DW2_BUFROUND 18
-#define DW2_DELAYINT 19
-#define DW2_DATATOG 22
-#define DW2_ERRORCNT 24
-#define DW2_COMPCODE 28
-
-#define DW3_TOTBYECNT 0
-#define DW3_PKTLEN0 0
-#define DW3_COMPCODE0 12
-#define DW3_PKTLEN1 16
-#define DW3_BUFSIZE 21
-#define DW3_COMPCODE1 28
-
-#define USBCTRL 0x600
-#define USBCTRL_I2C_WU_INT_STAT (1 << 27)
-#define USBCTRL_OTG_WU_INT_STAT (1 << 26)
-#define USBCTRL_HOST_WU_INT_STAT (1 << 25)
-#define USBCTRL_FNT_WU_INT_STAT (1 << 24)
-#define USBCTRL_I2C_WU_INT_EN (1 << 19)
-#define USBCTRL_OTG_WU_INT_EN (1 << 18)
-#define USBCTRL_HOST_WU_INT_EN (1 << 17)
-#define USBCTRL_FNT_WU_INT_EN (1 << 16)
-#define USBCTRL_OTC_RCV_RXDP (1 << 13)
-#define USBCTRL_HOST1_BYP_TLL (1 << 12)
-#define USBCTRL_OTG_BYP_VAL(x) ((x) << 10)
-#define USBCTRL_HOST1_BYP_VAL(x) ((x) << 8)
-#define USBCTRL_OTG_PWR_MASK (1 << 6)
-#define USBCTRL_HOST1_PWR_MASK (1 << 5)
-#define USBCTRL_HOST2_PWR_MASK (1 << 4)
-#define USBCTRL_USB_BYP (1 << 2)
-#define USBCTRL_HOST1_TXEN_OE (1 << 1)
-
-#define USBOTG_DMEM 0x1000
-
-/* Values in TD blocks */
-#define TD_DIR_SETUP 0
-#define TD_DIR_OUT 1
-#define TD_DIR_IN 2
-#define TD_FORMAT_CONTROL 0
-#define TD_FORMAT_ISO 1
-#define TD_FORMAT_BULK 2
-#define TD_FORMAT_INT 3
-#define TD_TOGGLE_CARRY 0
-#define TD_TOGGLE_DATA0 2
-#define TD_TOGGLE_DATA1 3
-
-/* control transfer states */
-#define US_CTRL_SETUP 2
-#define US_CTRL_DATA 1
-#define US_CTRL_ACK 0
-
-/* bulk transfer main state and 0-length packet */
-#define US_BULK 1
-#define US_BULK0 0
-
-/*ETD format description*/
-#define IMX_FMT_CTRL 0x0
-#define IMX_FMT_ISO 0x1
-#define IMX_FMT_BULK 0x2
-#define IMX_FMT_INT 0x3
-
-static char fmt_urb_to_etd[4] = {
-/*PIPE_ISOCHRONOUS*/ IMX_FMT_ISO,
-/*PIPE_INTERRUPT*/ IMX_FMT_INT,
-/*PIPE_CONTROL*/ IMX_FMT_CTRL,
-/*PIPE_BULK*/ IMX_FMT_BULK
-};
-
-/* condition (error) CC codes and mapping (OHCI like) */
-
-#define TD_CC_NOERROR 0x00
-#define TD_CC_CRC 0x01
-#define TD_CC_BITSTUFFING 0x02
-#define TD_CC_DATATOGGLEM 0x03
-#define TD_CC_STALL 0x04
-#define TD_DEVNOTRESP 0x05
-#define TD_PIDCHECKFAIL 0x06
-/*#define TD_UNEXPECTEDPID 0x07 - reserved, not active on MX2*/
-#define TD_DATAOVERRUN 0x08
-#define TD_DATAUNDERRUN 0x09
-#define TD_BUFFEROVERRUN 0x0C
-#define TD_BUFFERUNDERRUN 0x0D
-#define TD_SCHEDULEOVERRUN 0x0E
-#define TD_NOTACCESSED 0x0F
-
-static const int cc_to_error[16] = {
- /* No Error */ 0,
- /* CRC Error */ -EILSEQ,
- /* Bit Stuff */ -EPROTO,
- /* Data Togg */ -EILSEQ,
- /* Stall */ -EPIPE,
- /* DevNotResp */ -ETIMEDOUT,
- /* PIDCheck */ -EPROTO,
- /* UnExpPID */ -EPROTO,
- /* DataOver */ -EOVERFLOW,
- /* DataUnder */ -EREMOTEIO,
- /* (for hw) */ -EIO,
- /* (for hw) */ -EIO,
- /* BufferOver */ -ECOMM,
- /* BuffUnder */ -ENOSR,
- /* (for HCD) */ -ENOSPC,
- /* (for HCD) */ -EALREADY
-};
-
-/* HCD data associated with a usb core URB */
-struct urb_priv {
- struct urb *urb;
- struct usb_host_endpoint *ep;
- int active;
- int state;
- struct td *isoc_td;
- int isoc_remaining;
- int isoc_status;
-};
-
-/* HCD data associated with a usb core endpoint */
-struct ep_priv {
- struct usb_host_endpoint *ep;
- struct list_head td_list;
- struct list_head queue;
- int etd[NUM_ISO_ETDS];
- int waiting_etd;
-};
-
-/* isoc packet */
-struct td {
- struct list_head list;
- struct urb *urb;
- struct usb_host_endpoint *ep;
- dma_addr_t dma_handle;
- void *cpu_buffer;
- int len;
- int frame;
- int isoc_index;
-};
-
-/* HCD data associated with a hardware ETD */
-struct etd_priv {
- struct usb_host_endpoint *ep;
- struct urb *urb;
- struct td *td;
- struct list_head queue;
- dma_addr_t dma_handle;
- void *cpu_buffer;
- void *bounce_buffer;
- int alloc;
- int len;
- int dmem_size;
- int dmem_offset;
- int active_count;
-#ifdef DEBUG
- int activated_frame;
- int disactivated_frame;
- int last_int_frame;
- int last_req_frame;
- u32 submitted_dwords[4];
-#endif
-};
-
-/* Hardware data memory info */
-struct imx21_dmem_area {
- struct usb_host_endpoint *ep;
- unsigned int offset;
- unsigned int size;
- struct list_head list;
-};
-
-#ifdef DEBUG
-struct debug_usage_stats {
- unsigned int value;
- unsigned int maximum;
-};
-
-struct debug_stats {
- unsigned long submitted;
- unsigned long completed_ok;
- unsigned long completed_failed;
- unsigned long unlinked;
- unsigned long queue_etd;
- unsigned long queue_dmem;
-};
-
-struct debug_isoc_trace {
- int schedule_frame;
- int submit_frame;
- int request_len;
- int done_frame;
- int done_len;
- int cc;
- struct td *td;
-};
-#endif
-
-/* HCD data structure */
-struct imx21 {
- spinlock_t lock;
- struct device *dev;
- struct usb_hcd *hcd;
- struct mx21_usbh_platform_data *pdata;
- struct list_head dmem_list;
- struct list_head queue_for_etd; /* eps queued due to etd shortage */
- struct list_head queue_for_dmem; /* etds queued due to dmem shortage */
- struct etd_priv etd[USB_NUM_ETD];
- struct clk *clk;
- void __iomem *regs;
-#ifdef DEBUG
- struct dentry *debug_root;
- struct debug_stats nonisoc_stats;
- struct debug_stats isoc_stats;
- struct debug_usage_stats etd_usage;
- struct debug_usage_stats dmem_usage;
- struct debug_isoc_trace isoc_trace[20];
- struct debug_isoc_trace isoc_trace_failed[20];
- unsigned long debug_unblocks;
- int isoc_trace_index;
- int isoc_trace_index_failed;
-#endif
-};
-
-#endif
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