440 lines
10 KiB
C
440 lines
10 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2009 by Martin Fuzzey
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*/
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/* this file is part of imx21-hcd.c */
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#ifdef CONFIG_DYNAMIC_DEBUG
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#define DEBUG
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#endif
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#ifndef DEBUG
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static inline void create_debug_files(struct imx21 *imx21) { }
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static inline void remove_debug_files(struct imx21 *imx21) { }
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static inline void debug_urb_submitted(struct imx21 *imx21, struct urb *urb) {}
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static inline void debug_urb_completed(struct imx21 *imx21, struct urb *urb,
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int status) {}
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static inline void debug_urb_unlinked(struct imx21 *imx21, struct urb *urb) {}
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static inline void debug_urb_queued_for_etd(struct imx21 *imx21,
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struct urb *urb) {}
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static inline void debug_urb_queued_for_dmem(struct imx21 *imx21,
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struct urb *urb) {}
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static inline void debug_etd_allocated(struct imx21 *imx21) {}
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static inline void debug_etd_freed(struct imx21 *imx21) {}
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static inline void debug_dmem_allocated(struct imx21 *imx21, int size) {}
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static inline void debug_dmem_freed(struct imx21 *imx21, int size) {}
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static inline void debug_isoc_submitted(struct imx21 *imx21,
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int frame, struct td *td) {}
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static inline void debug_isoc_completed(struct imx21 *imx21,
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int frame, struct td *td, int cc, int len) {}
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#else
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#include <linux/debugfs.h>
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#include <linux/seq_file.h>
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static const char *dir_labels[] = {
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"TD 0",
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"OUT",
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"IN",
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"TD 1"
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};
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static const char *speed_labels[] = {
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"Full",
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"Low"
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};
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static const char *format_labels[] = {
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"Control",
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"ISO",
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"Bulk",
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"Interrupt"
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};
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static inline struct debug_stats *stats_for_urb(struct imx21 *imx21,
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struct urb *urb)
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{
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return usb_pipeisoc(urb->pipe) ?
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&imx21->isoc_stats : &imx21->nonisoc_stats;
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}
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static void debug_urb_submitted(struct imx21 *imx21, struct urb *urb)
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{
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stats_for_urb(imx21, urb)->submitted++;
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}
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static void debug_urb_completed(struct imx21 *imx21, struct urb *urb, int st)
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{
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if (st)
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stats_for_urb(imx21, urb)->completed_failed++;
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else
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stats_for_urb(imx21, urb)->completed_ok++;
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}
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static void debug_urb_unlinked(struct imx21 *imx21, struct urb *urb)
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{
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stats_for_urb(imx21, urb)->unlinked++;
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}
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static void debug_urb_queued_for_etd(struct imx21 *imx21, struct urb *urb)
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{
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stats_for_urb(imx21, urb)->queue_etd++;
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}
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static void debug_urb_queued_for_dmem(struct imx21 *imx21, struct urb *urb)
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{
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stats_for_urb(imx21, urb)->queue_dmem++;
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}
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static inline void debug_etd_allocated(struct imx21 *imx21)
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{
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imx21->etd_usage.maximum = max(
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++(imx21->etd_usage.value),
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imx21->etd_usage.maximum);
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}
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static inline void debug_etd_freed(struct imx21 *imx21)
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{
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imx21->etd_usage.value--;
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}
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static inline void debug_dmem_allocated(struct imx21 *imx21, int size)
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{
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imx21->dmem_usage.value += size;
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imx21->dmem_usage.maximum = max(
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imx21->dmem_usage.value,
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imx21->dmem_usage.maximum);
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}
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static inline void debug_dmem_freed(struct imx21 *imx21, int size)
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{
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imx21->dmem_usage.value -= size;
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}
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static void debug_isoc_submitted(struct imx21 *imx21,
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int frame, struct td *td)
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{
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struct debug_isoc_trace *trace = &imx21->isoc_trace[
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imx21->isoc_trace_index++];
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imx21->isoc_trace_index %= ARRAY_SIZE(imx21->isoc_trace);
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trace->schedule_frame = td->frame;
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trace->submit_frame = frame;
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trace->request_len = td->len;
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trace->td = td;
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}
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static inline void debug_isoc_completed(struct imx21 *imx21,
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int frame, struct td *td, int cc, int len)
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{
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struct debug_isoc_trace *trace, *trace_failed;
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int i;
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int found = 0;
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trace = imx21->isoc_trace;
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for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace); i++, trace++) {
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if (trace->td == td) {
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trace->done_frame = frame;
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trace->done_len = len;
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trace->cc = cc;
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trace->td = NULL;
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found = 1;
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break;
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}
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}
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if (found && cc) {
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trace_failed = &imx21->isoc_trace_failed[
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imx21->isoc_trace_index_failed++];
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imx21->isoc_trace_index_failed %= ARRAY_SIZE(
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imx21->isoc_trace_failed);
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*trace_failed = *trace;
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}
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}
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static char *format_ep(struct usb_host_endpoint *ep, char *buf, int bufsize)
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{
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if (ep)
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snprintf(buf, bufsize, "ep_%02x (type:%02X kaddr:%p)",
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ep->desc.bEndpointAddress,
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usb_endpoint_type(&ep->desc),
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ep);
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else
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snprintf(buf, bufsize, "none");
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return buf;
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}
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static char *format_etd_dword0(u32 value, char *buf, int bufsize)
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{
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snprintf(buf, bufsize,
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"addr=%d ep=%d dir=%s speed=%s format=%s halted=%d",
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value & 0x7F,
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(value >> DW0_ENDPNT) & 0x0F,
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dir_labels[(value >> DW0_DIRECT) & 0x03],
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speed_labels[(value >> DW0_SPEED) & 0x01],
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format_labels[(value >> DW0_FORMAT) & 0x03],
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(value >> DW0_HALTED) & 0x01);
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return buf;
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}
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static int debug_status_show(struct seq_file *s, void *v)
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{
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struct imx21 *imx21 = s->private;
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int etds_allocated = 0;
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int etds_sw_busy = 0;
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int etds_hw_busy = 0;
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int dmem_blocks = 0;
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int queued_for_etd = 0;
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int queued_for_dmem = 0;
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unsigned int dmem_bytes = 0;
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int i;
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struct etd_priv *etd;
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u32 etd_enable_mask;
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unsigned long flags;
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struct imx21_dmem_area *dmem;
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struct ep_priv *ep_priv;
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spin_lock_irqsave(&imx21->lock, flags);
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etd_enable_mask = readl(imx21->regs + USBH_ETDENSET);
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for (i = 0, etd = imx21->etd; i < USB_NUM_ETD; i++, etd++) {
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if (etd->alloc)
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etds_allocated++;
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if (etd->urb)
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etds_sw_busy++;
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if (etd_enable_mask & (1<<i))
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etds_hw_busy++;
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}
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list_for_each_entry(dmem, &imx21->dmem_list, list) {
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dmem_bytes += dmem->size;
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dmem_blocks++;
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}
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list_for_each_entry(ep_priv, &imx21->queue_for_etd, queue)
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queued_for_etd++;
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list_for_each_entry(etd, &imx21->queue_for_dmem, queue)
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queued_for_dmem++;
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spin_unlock_irqrestore(&imx21->lock, flags);
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seq_printf(s,
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"Frame: %d\n"
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"ETDs allocated: %d/%d (max=%d)\n"
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"ETDs in use sw: %d\n"
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"ETDs in use hw: %d\n"
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"DMEM allocated: %d/%d (max=%d)\n"
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"DMEM blocks: %d\n"
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"Queued waiting for ETD: %d\n"
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"Queued waiting for DMEM: %d\n",
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readl(imx21->regs + USBH_FRMNUB) & 0xFFFF,
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etds_allocated, USB_NUM_ETD, imx21->etd_usage.maximum,
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etds_sw_busy,
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etds_hw_busy,
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dmem_bytes, DMEM_SIZE, imx21->dmem_usage.maximum,
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dmem_blocks,
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queued_for_etd,
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queued_for_dmem);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(debug_status);
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static int debug_dmem_show(struct seq_file *s, void *v)
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{
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struct imx21 *imx21 = s->private;
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struct imx21_dmem_area *dmem;
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unsigned long flags;
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char ep_text[40];
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spin_lock_irqsave(&imx21->lock, flags);
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list_for_each_entry(dmem, &imx21->dmem_list, list)
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seq_printf(s,
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"%04X: size=0x%X "
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"ep=%s\n",
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dmem->offset, dmem->size,
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format_ep(dmem->ep, ep_text, sizeof(ep_text)));
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spin_unlock_irqrestore(&imx21->lock, flags);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(debug_dmem);
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static int debug_etd_show(struct seq_file *s, void *v)
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{
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struct imx21 *imx21 = s->private;
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struct etd_priv *etd;
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char buf[60];
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u32 dword;
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int i, j;
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unsigned long flags;
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spin_lock_irqsave(&imx21->lock, flags);
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for (i = 0, etd = imx21->etd; i < USB_NUM_ETD; i++, etd++) {
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int state = -1;
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struct urb_priv *urb_priv;
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if (etd->urb) {
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urb_priv = etd->urb->hcpriv;
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if (urb_priv)
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state = urb_priv->state;
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}
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seq_printf(s,
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"etd_num: %d\n"
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"ep: %s\n"
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"alloc: %d\n"
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"len: %d\n"
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"busy sw: %d\n"
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"busy hw: %d\n"
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"urb state: %d\n"
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"current urb: %p\n",
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i,
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format_ep(etd->ep, buf, sizeof(buf)),
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etd->alloc,
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etd->len,
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etd->urb != NULL,
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(readl(imx21->regs + USBH_ETDENSET) & (1 << i)) > 0,
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state,
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etd->urb);
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for (j = 0; j < 4; j++) {
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dword = etd_readl(imx21, i, j);
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switch (j) {
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case 0:
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format_etd_dword0(dword, buf, sizeof(buf));
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break;
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case 2:
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snprintf(buf, sizeof(buf),
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"cc=0X%02X", dword >> DW2_COMPCODE);
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break;
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default:
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*buf = 0;
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break;
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}
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seq_printf(s,
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"dword %d: submitted=%08X cur=%08X [%s]\n",
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j,
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etd->submitted_dwords[j],
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dword,
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buf);
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}
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seq_printf(s, "\n");
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}
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spin_unlock_irqrestore(&imx21->lock, flags);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(debug_etd);
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static void debug_statistics_show_one(struct seq_file *s,
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const char *name, struct debug_stats *stats)
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{
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seq_printf(s, "%s:\n"
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"submitted URBs: %lu\n"
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"completed OK: %lu\n"
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"completed failed: %lu\n"
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"unlinked: %lu\n"
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"queued for ETD: %lu\n"
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"queued for DMEM: %lu\n\n",
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name,
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stats->submitted,
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stats->completed_ok,
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stats->completed_failed,
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stats->unlinked,
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stats->queue_etd,
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stats->queue_dmem);
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}
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static int debug_statistics_show(struct seq_file *s, void *v)
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{
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struct imx21 *imx21 = s->private;
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unsigned long flags;
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spin_lock_irqsave(&imx21->lock, flags);
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debug_statistics_show_one(s, "nonisoc", &imx21->nonisoc_stats);
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debug_statistics_show_one(s, "isoc", &imx21->isoc_stats);
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seq_printf(s, "unblock kludge triggers: %lu\n", imx21->debug_unblocks);
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spin_unlock_irqrestore(&imx21->lock, flags);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(debug_statistics);
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static void debug_isoc_show_one(struct seq_file *s,
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const char *name, int index, struct debug_isoc_trace *trace)
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{
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seq_printf(s, "%s %d:\n"
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"cc=0X%02X\n"
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"scheduled frame %d (%d)\n"
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"submitted frame %d (%d)\n"
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"completed frame %d (%d)\n"
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"requested length=%d\n"
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"completed length=%d\n\n",
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name, index,
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trace->cc,
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trace->schedule_frame, trace->schedule_frame & 0xFFFF,
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trace->submit_frame, trace->submit_frame & 0xFFFF,
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trace->done_frame, trace->done_frame & 0xFFFF,
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trace->request_len,
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trace->done_len);
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}
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static int debug_isoc_show(struct seq_file *s, void *v)
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{
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struct imx21 *imx21 = s->private;
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struct debug_isoc_trace *trace;
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unsigned long flags;
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int i;
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spin_lock_irqsave(&imx21->lock, flags);
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trace = imx21->isoc_trace_failed;
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for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace_failed); i++, trace++)
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debug_isoc_show_one(s, "isoc failed", i, trace);
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trace = imx21->isoc_trace;
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for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace); i++, trace++)
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debug_isoc_show_one(s, "isoc", i, trace);
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spin_unlock_irqrestore(&imx21->lock, flags);
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return 0;
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}
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DEFINE_SHOW_ATTRIBUTE(debug_isoc);
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static void create_debug_files(struct imx21 *imx21)
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{
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struct dentry *root;
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root = debugfs_create_dir(dev_name(imx21->dev), NULL);
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imx21->debug_root = root;
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debugfs_create_file("status", S_IRUGO, root, imx21, &debug_status_fops);
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debugfs_create_file("dmem", S_IRUGO, root, imx21, &debug_dmem_fops);
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debugfs_create_file("etd", S_IRUGO, root, imx21, &debug_etd_fops);
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debugfs_create_file("statistics", S_IRUGO, root, imx21,
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&debug_statistics_fops);
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debugfs_create_file("isoc", S_IRUGO, root, imx21, &debug_isoc_fops);
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}
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static void remove_debug_files(struct imx21 *imx21)
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{
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debugfs_remove_recursive(imx21->debug_root);
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}
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#endif
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