diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0702-xhci-add-quirk-for-host-controllers-that-don-t-updat.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0702-xhci-add-quirk-for-host-controllers-that-don-t-updat.patch | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0702-xhci-add-quirk-for-host-controllers-that-don-t-updat.patch b/target/linux/brcm2708/patches-4.19/950-0702-xhci-add-quirk-for-host-controllers-that-don-t-updat.patch deleted file mode 100644 index 7a71acd78c..0000000000 --- a/target/linux/brcm2708/patches-4.19/950-0702-xhci-add-quirk-for-host-controllers-that-don-t-updat.patch +++ /dev/null @@ -1,90 +0,0 @@ -From 92900af9134a2e5435ee68d69cdd23d1f8cb4980 Mon Sep 17 00:00:00 2001 -From: Jonathan Bell <jonathan@raspberrypi.org> -Date: Thu, 11 Jul 2019 17:55:43 +0100 -Subject: [PATCH 702/725] xhci: add quirk for host controllers that don't - update endpoint DCS - -Seen on a VLI VL805 PCIe to USB controller. For non-stream endpoints -at least, if the xHC halts on a particular TRB due to an error then -the DCS field in the Out Endpoint Context maintained by the hardware -is not updated with the current cycle state. - -Using the quirk XHCI_EP_CTX_BROKEN_DCS and instead fetch the DCS bit -from the TRB that the xHC stopped on. - -See: https://github.com/raspberrypi/linux/issues/3060 - -Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org> ---- - drivers/usb/host/xhci-pci.c | 4 +++- - drivers/usb/host/xhci-ring.c | 26 +++++++++++++++++++++++++- - drivers/usb/host/xhci.h | 1 + - 3 files changed, 29 insertions(+), 2 deletions(-) - ---- a/drivers/usb/host/xhci-pci.c -+++ b/drivers/usb/host/xhci-pci.c -@@ -223,8 +223,10 @@ static void xhci_pci_quirks(struct devic - xhci->quirks |= XHCI_BROKEN_STREAMS; - - if (pdev->vendor == PCI_VENDOR_ID_VIA && -- pdev->device == 0x3483) -+ pdev->device == 0x3483) { - xhci->quirks |= XHCI_LPM_SUPPORT; -+ xhci->quirks |= XHCI_EP_CTX_BROKEN_DCS; -+ } - - if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA && - pdev->device == 0x1042) ---- a/drivers/usb/host/xhci-ring.c -+++ b/drivers/usb/host/xhci-ring.c -@@ -520,7 +520,10 @@ void xhci_find_new_dequeue_state(struct - struct xhci_virt_ep *ep = &dev->eps[ep_index]; - struct xhci_ring *ep_ring; - struct xhci_segment *new_seg; -+ struct xhci_segment *halted_seg = NULL; - union xhci_trb *new_deq; -+ union xhci_trb *halted_trb; -+ int index = 0; - dma_addr_t addr; - u64 hw_dequeue; - bool cycle_found = false; -@@ -541,7 +544,28 @@ void xhci_find_new_dequeue_state(struct - hw_dequeue = xhci_get_hw_deq(xhci, dev, ep_index, stream_id); - new_seg = ep_ring->deq_seg; - new_deq = ep_ring->dequeue; -- state->new_cycle_state = hw_dequeue & 0x1; -+ -+ /* -+ * Quirk: xHC write-back of the DCS field in the hardware dequeue -+ * pointer is wrong - use the cycle state of the TRB pointed to by -+ * the dequeue pointer. -+ */ -+ if (xhci->quirks & XHCI_EP_CTX_BROKEN_DCS && -+ !(ep->ep_state & EP_HAS_STREAMS)) -+ halted_seg = trb_in_td(xhci, cur_td->start_seg, -+ cur_td->first_trb, cur_td->last_trb, -+ hw_dequeue & ~0xf, false); -+ if (halted_seg) { -+ index = ((dma_addr_t)(hw_dequeue & ~0xf) - halted_seg->dma) / -+ sizeof(*halted_trb); -+ halted_trb = &halted_seg->trbs[index]; -+ state->new_cycle_state = halted_trb->generic.field[3] & 0x1; -+ xhci_dbg(xhci, "Endpoint DCS = %d TRB index = %d cycle = %d\n", -+ (u8)(hw_dequeue & 0x1), index, -+ state->new_cycle_state); -+ } else { -+ state->new_cycle_state = hw_dequeue & 0x1; -+ } - state->stream_id = stream_id; - - /* ---- a/drivers/usb/host/xhci.h -+++ b/drivers/usb/host/xhci.h -@@ -1865,6 +1865,7 @@ struct xhci_hcd { - #define XHCI_ZERO_64B_REGS BIT_ULL(32) - #define XHCI_RESET_PLL_ON_DISCONNECT BIT_ULL(34) - #define XHCI_SNPS_BROKEN_SUSPEND BIT_ULL(35) -+#define XHCI_EP_CTX_BROKEN_DCS BIT_ULL(36) - - unsigned int num_active_eps; - unsigned int limit_active_eps; |