6.8-stable review patch. If anyone has any objections, please let me know.
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From: Minas Harutyunyan Minas.Harutyunyan@synopsys.com
commit b258e42688501cadb1a6dd658d6f015df9f32d8f upstream.
Fixed ISOC completion flow in DDMA mode. Added isoc descriptor actual length value and update urb's start_frame value. Fixed initialization of ISOC DMA descriptors flow.
Fixes: 56f5b1cff22a ("staging: Core files for the DWC2 driver") Fixes: 20f2eb9c4cf8 ("staging: dwc2: add microframe scheduler from downstream Pi kernel") Fixes: c17b337c1ea4 ("usb: dwc2: host: program descriptor for next frame") Fixes: dc4c76e7b22c ("staging: HCD descriptor DMA support for the DWC2 driver") Fixes: 762d3a1a9cd7 ("usb: dwc2: host: process all completed urbs") CC: stable@vger.kernel.org Signed-off-by: Minas Harutyunyan Minas.Harutyunyan@synopsys.com Link: https://lore.kernel.org/r/a8b1e1711cc6cabfb45d92ede12e35445c66f06c.170894469... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/dwc2/hcd.c | 12 ++++++++++-- drivers/usb/dwc2/hcd_ddma.c | 17 +++++++++++------ drivers/usb/dwc2/hw.h | 2 +- 3 files changed, 22 insertions(+), 9 deletions(-)
--- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -2701,8 +2701,11 @@ enum dwc2_transaction_type dwc2_hcd_sele hsotg->available_host_channels--; } qh = list_entry(qh_ptr, struct dwc2_qh, qh_list_entry); - if (dwc2_assign_and_init_hc(hsotg, qh)) + if (dwc2_assign_and_init_hc(hsotg, qh)) { + if (hsotg->params.uframe_sched) + hsotg->available_host_channels++; break; + }
/* * Move the QH from the periodic ready schedule to the @@ -2735,8 +2738,11 @@ enum dwc2_transaction_type dwc2_hcd_sele hsotg->available_host_channels--; }
- if (dwc2_assign_and_init_hc(hsotg, qh)) + if (dwc2_assign_and_init_hc(hsotg, qh)) { + if (hsotg->params.uframe_sched) + hsotg->available_host_channels++; break; + }
/* * Move the QH from the non-periodic inactive schedule to the @@ -4143,6 +4149,8 @@ void dwc2_host_complete(struct dwc2_hsot urb->actual_length);
if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) { + if (!hsotg->params.dma_desc_enable) + urb->start_frame = qtd->qh->start_active_frame; urb->error_count = dwc2_hcd_urb_get_error_count(qtd->urb); for (i = 0; i < urb->number_of_packets; ++i) { urb->iso_frame_desc[i].actual_length = --- a/drivers/usb/dwc2/hcd_ddma.c +++ b/drivers/usb/dwc2/hcd_ddma.c @@ -559,7 +559,7 @@ static void dwc2_init_isoc_dma_desc(stru idx = qh->td_last; inc = qh->host_interval; hsotg->frame_number = dwc2_hcd_get_frame_number(hsotg); - cur_idx = dwc2_frame_list_idx(hsotg->frame_number); + cur_idx = idx; next_idx = dwc2_desclist_idx_inc(qh->td_last, inc, qh->dev_speed);
/* @@ -866,6 +866,8 @@ static int dwc2_cmpl_host_isoc_dma_desc( { struct dwc2_dma_desc *dma_desc; struct dwc2_hcd_iso_packet_desc *frame_desc; + u16 frame_desc_idx; + struct urb *usb_urb = qtd->urb->priv; u16 remain = 0; int rc = 0;
@@ -878,8 +880,11 @@ static int dwc2_cmpl_host_isoc_dma_desc( DMA_FROM_DEVICE);
dma_desc = &qh->desc_list[idx]; + frame_desc_idx = (idx - qtd->isoc_td_first) & (usb_urb->number_of_packets - 1);
- frame_desc = &qtd->urb->iso_descs[qtd->isoc_frame_index_last]; + frame_desc = &qtd->urb->iso_descs[frame_desc_idx]; + if (idx == qtd->isoc_td_first) + usb_urb->start_frame = dwc2_hcd_get_frame_number(hsotg); dma_desc->buf = (u32)(qtd->urb->dma + frame_desc->offset); if (chan->ep_is_in) remain = (dma_desc->status & HOST_DMA_ISOC_NBYTES_MASK) >> @@ -900,7 +905,7 @@ static int dwc2_cmpl_host_isoc_dma_desc( frame_desc->status = 0; }
- if (++qtd->isoc_frame_index == qtd->urb->packet_count) { + if (++qtd->isoc_frame_index == usb_urb->number_of_packets) { /* * urb->status is not used for isoc transfers here. The * individual frame_desc status are used instead. @@ -1005,11 +1010,11 @@ static void dwc2_complete_isoc_xfer_ddma return; idx = dwc2_desclist_idx_inc(idx, qh->host_interval, chan->speed); - if (!rc) + if (rc == 0) continue;
- if (rc == DWC2_CMPL_DONE) - break; + if (rc == DWC2_CMPL_DONE || rc == DWC2_CMPL_STOP) + goto stop_scan;
/* rc == DWC2_CMPL_STOP */
--- a/drivers/usb/dwc2/hw.h +++ b/drivers/usb/dwc2/hw.h @@ -698,7 +698,7 @@ #define TXSTS_QTOP_TOKEN_MASK (0x3 << 25) #define TXSTS_QTOP_TOKEN_SHIFT 25 #define TXSTS_QTOP_TERMINATE BIT(24) -#define TXSTS_QSPCAVAIL_MASK (0xff << 16) +#define TXSTS_QSPCAVAIL_MASK (0x7f << 16) #define TXSTS_QSPCAVAIL_SHIFT 16 #define TXSTS_FSPCAVAIL_MASK (0xffff << 0) #define TXSTS_FSPCAVAIL_SHIFT 0