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d91f38a99e
Removed upstreamed: generic/backport-6.1/701-v6.5-net-bgmac-postpone-turning-IRQs-off-to-avoid-SoC-han.patch[1] generic/pending-6.1/160-workqueue-fix-enum-type-for-gcc-13.patch[2] qualcommax/patches-6.1/0022-v6.5-soc-qcom-mdt_loader-Fix-unconditional-call-to-scm_pa.patch[3] Manually rebased: bcm27xx/patches-6.1/950-0359-xhci-quirks-add-link-TRB-quirk-for-VL805.patch bcm27xx/patches-6.1/950-0362-usb-xhci-add-VLI_TRB_CACHE_BUG-quirk.patch bcm27xx/patches-6.1/950-0390-usb-xhci-add-a-quirk-for-Superspeed-bulk-OUT-transfe.patch bcm27xx/patches-6.1/950-0469-usb-xhci-add-XHCI_VLI_HUB_TT_QUIRK.patch bcm53xx/patches-6.1/180-usb-xhci-add-support-for-performing-fake-doorbell.patch All other patches automatically rebased. 1. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.1.40&id=685b57a1221c38ec8b456f968264d2496715820c 2. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.1.40&id=2d57a1590f4d8c516f5aaf8fd5bb4f52d67275d8 3. https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.1.40&id=33f8dff6e1cbba5c2ec85fa5649c0a759a7e685c Build system: x86/64, filogic/xiaomi_redmi-router-ax6000-ubootmod Build-tested: x86/64, filogic/xiaomi_redmi-router-ax6000-ubootmod Run-tested: x86/64 Signed-off-by: John Audia <therealgraysky@proton.me>
61 lines
2.2 KiB
Diff
61 lines
2.2 KiB
Diff
From d0375d97a100054ab79539522b458855a6127e27 Mon Sep 17 00:00:00 2001
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From: Jonathan Bell <jonathan@raspberrypi.org>
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Date: Mon, 26 Oct 2020 14:03:35 +0000
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Subject: [PATCH] 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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See: https://github.com/raspberrypi/linux/issues/3919
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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 | 1 +
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3 files changed, 11 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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@@ -296,6 +296,7 @@ static void xhci_pci_quirks(struct devic
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if (pdev->vendor == PCI_VENDOR_ID_VIA && pdev->device == 0x3483) {
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xhci->quirks |= XHCI_LPM_SUPPORT;
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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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@@ -687,6 +687,15 @@ 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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@@ -1901,6 +1901,7 @@ struct xhci_hcd {
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#define XHCI_RESET_TO_DEFAULT BIT_ULL(44)
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#define XHCI_ZHAOXIN_TRB_FETCH BIT_ULL(45)
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#define XHCI_ZHAOXIN_HOST BIT_ULL(46)
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+#define XHCI_AVOID_DQ_ON_LINK BIT_ULL(47)
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unsigned int num_active_eps;
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unsigned int limit_active_eps;
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