748682e855
Changelog: https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.83 Removed upstreamed: bcm27xx/patches-6.6/950-0483-usb-xhci-borrow-upstream-TRB_FETCH-quirk-on-VL805-ho.patch[1] Manually rebased: bcm27xx/patches-6.6/950-0061-Revert-Revert-xhci-add-quirk-for-host-controllers-th.patch bcm27xx/patches-6.6/950-0485-usb-xhci-add-XHCI_VLI_HUB_TT_QUIRK.patch bcm27xx/patches-6.6/950-0519-usb-dwc3-Set-DMA-and-coherent-masks-early.patch All other patches automatically rebased. 1. https://web.git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/drivers/usb/host/xhci-pci.c?h=linux-6.6.y&id=c401b1b4b835d66792e884b76264d742a20d931d Build system: x86/64 Build-tested: x86/64 Run-tested: x86/64 Signed-off-by: John Audia <therealgraysky@proton.me> [fixed issues with bcm27xx patches] Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
65 lines
2.2 KiB
Diff
65 lines
2.2 KiB
Diff
From 587b4b1f3c0d6795440fe02624a5d553fc7af817 Mon Sep 17 00:00:00 2001
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From: Jonathan Bell <jonathan@raspberrypi.com>
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Date: Mon, 26 Oct 2020 14:03:35 +0000
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Subject: [PATCH 0482/1085] xhci: quirks: add link TRB quirk for VL805
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The VL805 controller can't cope with the TR Dequeue Pointer for an endpoint
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being set to a Link TRB. The hardware-maintained endpoint context ends up
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stuck at the address of the Link TRB, leading to erroneous ring expansion
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events whenever the enqueue pointer wraps to the dequeue position.
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If the search for the end of the current TD and ring cycle state lands on
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a Link TRB, move to the next segment.
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Link: https://github.com/raspberrypi/linux/issues/3919
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[6.5.y Fixup - move downstream quirk bits further along]
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Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
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---
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drivers/usb/host/xhci-pci.c | 1 +
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drivers/usb/host/xhci-ring.c | 9 +++++++++
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drivers/usb/host/xhci.h | 3 +++
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3 files changed, 13 insertions(+)
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--- a/drivers/usb/host/xhci-pci.c
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+++ b/drivers/usb/host/xhci-pci.c
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@@ -486,6 +486,7 @@ static void xhci_pci_quirks(struct devic
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xhci->quirks |= XHCI_LPM_SUPPORT;
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xhci->quirks |= XHCI_TRB_OVERFETCH;
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xhci->quirks |= XHCI_EP_CTX_BROKEN_DCS;
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+ xhci->quirks |= XHCI_AVOID_DQ_ON_LINK;
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}
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if (pdev->vendor == PCI_VENDOR_ID_ASMEDIA &&
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--- a/drivers/usb/host/xhci-ring.c
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+++ b/drivers/usb/host/xhci-ring.c
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@@ -730,6 +730,15 @@ static int xhci_move_dequeue_past_td(str
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} while (!cycle_found || !td_last_trb_found);
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deq_found:
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+ /*
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+ * Quirk: the xHC does not correctly parse link TRBs if the HW Dequeue
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+ * pointer is set to one. Advance to the next TRB (and next segment).
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+ */
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+ if (xhci->quirks & XHCI_AVOID_DQ_ON_LINK && trb_is_link(new_deq)) {
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+ if (link_trb_toggles_cycle(new_deq))
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+ new_cycle ^= 0x1;
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+ next_trb(xhci, ep_ring, &new_seg, &new_deq);
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+ }
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/* Don't update the ring cycle state for the producer (us). */
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addr = xhci_trb_virt_to_dma(new_seg, new_deq);
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--- a/drivers/usb/host/xhci.h
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+++ b/drivers/usb/host/xhci.h
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@@ -1664,6 +1664,9 @@ struct xhci_hcd {
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#define XHCI_CDNS_SCTX_QUIRK BIT_ULL(48)
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#define XHCI_ETRON_HOST BIT_ULL(49)
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+/* Downstream VLI fixes */
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+#define XHCI_AVOID_DQ_ON_LINK BIT_ULL(56)
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+
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unsigned int num_active_eps;
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unsigned int limit_active_eps;
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struct xhci_port *hw_ports;
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