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116 lines
3.9 KiB
116 lines
3.9 KiB
11 years ago
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From 2b66f2f4f07ed87db0e241489d4e93881fe50a85 Mon Sep 17 00:00:00 2001
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From: P33M <P33M@github.com>
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Date: Tue, 30 Jul 2013 09:58:48 +0100
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Subject: [PATCH 085/174] dwc_otg: fiq_split: use TTs with more granularity
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This fixes certain issues with split transaction scheduling.
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- Isochronous multi-packet OUT transactions now hog the TT until
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they are completed - this prevents hubs aborting transactions
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if they get a periodic start-split out-of-order
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- Don't perform TT allocation on non-periodic endpoints - this
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allows simultaneous use of the TT's bulk/control and periodic
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transaction buffers
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This commit will mainly affect USB audio playback.
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---
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drivers/usb/host/dwc_otg/dwc_otg_hcd.c | 26 +++++++++++++-------------
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drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c | 20 ++++++++++++++++----
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2 files changed, 29 insertions(+), 17 deletions(-)
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--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
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+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
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@@ -1356,6 +1356,7 @@ dwc_otg_transaction_type_e dwc_otg_hcd_s
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{
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dwc_list_link_t *qh_ptr;
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dwc_otg_qh_t *qh;
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+ dwc_otg_qtd_t *qtd;
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int num_channels;
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dwc_irqflags_t flags;
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dwc_spinlock_t *channel_lock = hcd->channel_lock;
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@@ -1379,11 +1380,18 @@ dwc_otg_transaction_type_e dwc_otg_hcd_s
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qh = DWC_LIST_ENTRY(qh_ptr, dwc_otg_qh_t, qh_list_entry);
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- if(qh->do_split && dwc_otg_hcd_allocate_port(hcd, qh))
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- {
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- qh_ptr = DWC_LIST_NEXT(qh_ptr);
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- g_next_sched_frame = dwc_frame_num_inc(dwc_otg_hcd_get_frame_number(hcd), 1);
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- continue;
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+ if(qh->do_split) {
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+ qtd = DWC_CIRCLEQ_FIRST(&qh->qtd_list);
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+ if(!(qh->ep_type == UE_ISOCHRONOUS &&
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+ (qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_MID ||
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+ qtd->isoc_split_pos == DWC_HCSPLIT_XACTPOS_END))) {
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+ if(dwc_otg_hcd_allocate_port(hcd, qh))
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+ {
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+ qh_ptr = DWC_LIST_NEXT(qh_ptr);
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+ g_next_sched_frame = dwc_frame_num_inc(dwc_otg_hcd_get_frame_number(hcd), 1);
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+ continue;
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+ }
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+ }
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}
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if (microframe_schedule) {
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@@ -1451,18 +1459,10 @@ dwc_otg_transaction_type_e dwc_otg_hcd_s
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}
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}
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- if (qh->do_split && dwc_otg_hcd_allocate_port(hcd, qh))
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- {
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- g_next_sched_frame = dwc_frame_num_inc(dwc_otg_hcd_get_frame_number(hcd), 1);
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- qh_ptr = DWC_LIST_NEXT(qh_ptr);
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- continue;
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- }
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-
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if (microframe_schedule) {
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DWC_SPINLOCK_IRQSAVE(channel_lock, &flags);
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if (hcd->available_host_channels < 1) {
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DWC_SPINUNLOCK_IRQRESTORE(channel_lock, flags);
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- if(qh->do_split) dwc_otg_hcd_release_port(hcd, qh);
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break;
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}
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hcd->available_host_channels--;
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--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
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+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_intr.c
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@@ -1328,10 +1328,20 @@ static void release_channel(dwc_otg_hcd_
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#ifdef FIQ_DEBUG
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int endp = qtd->urb ? qtd->urb->pipe_info.ep_num : 0;
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#endif
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+ int hog_port = 0;
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DWC_DEBUGPL(DBG_HCDV, " %s: channel %d, halt_status %d, xfer_len %d\n",
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__func__, hc->hc_num, halt_status, hc->xfer_len);
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+ if(fiq_split_enable && hc->do_split) {
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+ if(!hc->ep_is_in && hc->ep_type == UE_ISOCHRONOUS) {
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+ if(hc->xact_pos == DWC_HCSPLIT_XACTPOS_MID ||
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+ hc->xact_pos == DWC_HCSPLIT_XACTPOS_BEGIN) {
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+ hog_port = 1;
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+ }
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+ }
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+ }
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+
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switch (halt_status) {
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case DWC_OTG_HC_XFER_URB_COMPLETE:
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free_qtd = 1;
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@@ -1417,12 +1427,14 @@ cleanup:
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fiq_print(FIQDBG_ERR, "PRTNOTAL");
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//BUG();
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}
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-
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- hcd->hub_port[hc->hub_addr] &= ~(1 << hc->port_addr);
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+ if(!hog_port && (hc->ep_type == DWC_OTG_EP_TYPE_ISOC ||
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+ hc->ep_type == DWC_OTG_EP_TYPE_INTR)) {
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+ hcd->hub_port[hc->hub_addr] &= ~(1 << hc->port_addr);
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#ifdef FIQ_DEBUG
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- hcd->hub_port_alloc[hc->hub_addr * 16 + hc->port_addr] = -1;
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+ hcd->hub_port_alloc[hc->hub_addr * 16 + hc->port_addr] = -1;
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#endif
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- fiq_print(FIQDBG_PORTHUB, "H%dP%d:RR%d", hc->hub_addr, hc->port_addr, endp);
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+ fiq_print(FIQDBG_PORTHUB, "H%dP%d:RR%d", hc->hub_addr, hc->port_addr, endp);
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+ }
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}
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/* Try to queue more transfers now that there's a free channel. */
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