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[Qemu-devel] [PATCH 7/7] usb-hcd-xhci: Update endpoint context dequeue p
From: |
Hans de Goede |
Subject: |
[Qemu-devel] [PATCH 7/7] usb-hcd-xhci: Update endpoint context dequeue pointer for streams too |
Date: |
Mon, 23 Sep 2013 20:54:07 +0200 |
With streams the endpoint context dequeue pointer should point to the
dequeue value for the currently active stream.
At least Linux guests expect it to point to value set by an set_ep_dequeue
upon completion of the set_ep_dequeue (before kicking the ep).
Otherwise the Linux kernel will complain (and things won't work):
xhci_hcd 0000:00:05.0: Mismatch between completed Set TR Deq Ptr command & xHCI
internal state.
xhci_hcd 0000:00:05.0: ep deq seg = ffff8800366f0880, deq ptr = ffff8800366ec010
Signed-off-by: Hans de Goede <address@hidden>
---
hw/usb/hcd-xhci.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
index 4890344..0bbf296 100644
--- a/hw/usb/hcd-xhci.c
+++ b/hw/usb/hcd-xhci.c
@@ -1216,6 +1216,7 @@ static XHCIStreamContext *xhci_find_stream(XHCIEPContext
*epctx,
static void xhci_set_ep_state(XHCIState *xhci, XHCIEPContext *epctx,
XHCIStreamContext *sctx, uint32_t state)
{
+ XHCIRing *ring = NULL;
uint32_t ctx[5];
uint32_t ctx2[2];
@@ -1226,6 +1227,7 @@ static void xhci_set_ep_state(XHCIState *xhci,
XHCIEPContext *epctx,
/* update ring dequeue ptr */
if (epctx->nr_pstreams) {
if (sctx != NULL) {
+ ring = &sctx->ring;
xhci_dma_read_u32s(xhci, sctx->pctx, ctx2, sizeof(ctx2));
ctx2[0] &= 0xe;
ctx2[0] |= sctx->ring.dequeue | sctx->ring.ccs;
@@ -1233,8 +1235,12 @@ static void xhci_set_ep_state(XHCIState *xhci,
XHCIEPContext *epctx,
xhci_dma_write_u32s(xhci, sctx->pctx, ctx2, sizeof(ctx2));
}
} else {
- ctx[2] = epctx->ring.dequeue | epctx->ring.ccs;
- ctx[3] = (epctx->ring.dequeue >> 16) >> 16;
+ ring = &epctx->ring;
+ }
+ if (ring) {
+ ctx[2] = ring->dequeue | ring->ccs;
+ ctx[3] = (ring->dequeue >> 16) >> 16;
+
DPRINTF("xhci: set epctx: " DMA_ADDR_FMT " state=%d
dequeue=%08x%08x\n",
epctx->pctx, state, ctx[3], ctx[2]);
}
--
1.8.3.1
- [Qemu-devel] [PATCH 0/7] usb: host-libusb and xhci fixes, Hans de Goede, 2013/09/23
- [Qemu-devel] [PATCH 1/7] usb-host-libusb: Fix reset handling, Hans de Goede, 2013/09/23
- [Qemu-devel] [PATCH 2/7] usb-host-libusb: Configuration 0 may be a valid configuration, Hans de Goede, 2013/09/23
- [Qemu-devel] [PATCH 3/7] usb-host-libusb: Detach kernel drivers earlier, Hans de Goede, 2013/09/23
- [Qemu-devel] [PATCH 4/7] usb-hcd-xhci: Remove unused sstreamsm member from XHCIStreamContext, Hans de Goede, 2013/09/23
- [Qemu-devel] [PATCH 5/7] usb-hcd-xhci: Remove unused cancelled member from XHCITransfer, Hans de Goede, 2013/09/23
- [Qemu-devel] [PATCH 6/7] usb-hcd-xhci: Report completion of active transfer with CC_STOPPED on ep stop, Hans de Goede, 2013/09/23
- [Qemu-devel] [PATCH 7/7] usb-hcd-xhci: Update endpoint context dequeue pointer for streams too,
Hans de Goede <=