168 lines
5.6 KiB
Diff
168 lines
5.6 KiB
Diff
From 2a6bbdddc2aca6af038c42054c3d3a7b09e5ac3a Mon Sep 17 00:00:00 2001
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From: Hans de Goede <hdegoede@redhat.com>
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Date: Fri, 2 Mar 2012 00:26:23 +0100
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Subject: [PATCH 138/140] usb: add USB_RET_IOERROR
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We already have USB_RET_NAK, but that means that a device does not want
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to send/receive right now. But with host / network redirection we can
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actually have a transaction fail due to some io error, rather then ie
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the device just not having any data atm.
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This patch adds a new error code named USB_RET_IOERROR for this, and uses
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it were appropriate.
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Notes:
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-Currently all usb-controllers handle this the same as NODEV, but that
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may change in the future, OHCI could indicate a CRC error instead for example.
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-This patch does not touch hw/usb-musb.c, that is because the code in there
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handles STALL and NAK specially and has a if status < 0 generic catch all
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for all other errors
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Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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---
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hw/usb-ehci.c | 2 ++
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hw/usb-ohci.c | 2 ++
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hw/usb-uhci.c | 1 +
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hw/usb.h | 11 ++++++-----
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usb-linux.c | 4 ++--
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usb-redir.c | 9 ++++++---
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6 files changed, 19 insertions(+), 10 deletions(-)
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diff --git a/hw/usb-ehci.c b/hw/usb-ehci.c
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index 72c3f2a..ba1b9da 100644
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--- a/hw/usb-ehci.c
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+++ b/hw/usb-ehci.c
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@@ -1275,6 +1275,7 @@ static void ehci_execute_complete(EHCIQueue *q)
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if (q->usb_status < 0) {
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switch(q->usb_status) {
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+ case USB_RET_IOERROR:
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case USB_RET_NODEV:
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q->qh.token |= (QTD_TOKEN_HALT | QTD_TOKEN_XACTERR);
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set_field(&q->qh.token, 0, QTD_TOKEN_CERR);
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@@ -1471,6 +1472,7 @@ static int ehci_process_itd(EHCIState *ehci,
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default:
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fprintf(stderr, "Unexpected iso usb result: %d\n", ret);
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/* Fall through */
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+ case USB_RET_IOERROR:
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case USB_RET_NODEV:
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/* 3.3.2: XACTERR is only allowed on IN transactions */
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if (dir) {
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diff --git a/hw/usb-ohci.c b/hw/usb-ohci.c
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index c2981c5..d805497 100644
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--- a/hw/usb-ohci.c
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+++ b/hw/usb-ohci.c
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@@ -828,6 +828,7 @@ static int ohci_service_iso_td(OHCIState *ohci, struct ohci_ed *ed,
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OHCI_CC_DATAUNDERRUN);
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} else {
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switch (ret) {
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+ case USB_RET_IOERROR:
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case USB_RET_NODEV:
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OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
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OHCI_CC_DEVICENOTRESPONDING);
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@@ -1051,6 +1052,7 @@ static int ohci_service_td(OHCIState *ohci, struct ohci_ed *ed)
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OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_DATAUNDERRUN);
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} else {
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switch (ret) {
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+ case USB_RET_IOERROR:
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case USB_RET_NODEV:
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OHCI_SET_BM(td.flags, TD_CC, OHCI_CC_DEVICENOTRESPONDING);
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case USB_RET_NAK:
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diff --git a/hw/usb-uhci.c b/hw/usb-uhci.c
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index f9e3ea5..a994943 100644
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--- a/hw/usb-uhci.c
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+++ b/hw/usb-uhci.c
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@@ -751,6 +751,7 @@ out:
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break;
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return 1;
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+ case USB_RET_IOERROR:
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case USB_RET_NODEV:
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default:
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break;
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diff --git a/hw/usb.h b/hw/usb.h
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index c6e1870..4010e12 100644
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--- a/hw/usb.h
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+++ b/hw/usb.h
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@@ -41,11 +41,12 @@
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#define USB_MSG_DETACH 0x101
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#define USB_MSG_RESET 0x102
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-#define USB_RET_NODEV (-1)
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-#define USB_RET_NAK (-2)
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-#define USB_RET_STALL (-3)
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-#define USB_RET_BABBLE (-4)
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-#define USB_RET_ASYNC (-5)
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+#define USB_RET_NODEV (-1)
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+#define USB_RET_NAK (-2)
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+#define USB_RET_STALL (-3)
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+#define USB_RET_BABBLE (-4)
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+#define USB_RET_IOERROR (-5)
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+#define USB_RET_ASYNC (-6)
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#define USB_SPEED_LOW 0
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#define USB_SPEED_FULL 1
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diff --git a/usb-linux.c b/usb-linux.c
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index b2d70f9..9f13d1e 100644
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--- a/usb-linux.c
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+++ b/usb-linux.c
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@@ -395,7 +395,7 @@ static void async_complete(void *opaque)
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break;
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default:
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- p->result = USB_RET_NAK;
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+ p->result = USB_RET_IOERROR;
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break;
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}
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@@ -725,7 +725,7 @@ static int urb_status_to_usb_ret(int status)
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case -EOVERFLOW:
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return USB_RET_BABBLE;
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default:
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- return USB_RET_NAK;
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+ return USB_RET_IOERROR;
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}
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}
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diff --git a/usb-redir.c b/usb-redir.c
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index 61860ef..f64443e 100644
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--- a/usb-redir.c
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+++ b/usb-redir.c
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@@ -441,7 +441,7 @@ static int usbredir_handle_iso_data(USBRedirDevice *dev, USBPacket *p,
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/* Check iso_error for stream errors, otherwise its an underrun */
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status = dev->endpoint[EP2I(ep)].iso_error;
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dev->endpoint[EP2I(ep)].iso_error = 0;
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- return status ? USB_RET_NAK : 0;
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+ return status ? USB_RET_IOERROR : 0;
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}
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DPRINTF2("iso-token-in ep %02X status %d len %d queue-size: %d\n", ep,
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isop->status, isop->len, dev->endpoint[EP2I(ep)].bufpq_size);
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@@ -449,7 +449,7 @@ static int usbredir_handle_iso_data(USBRedirDevice *dev, USBPacket *p,
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status = isop->status;
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if (status != usb_redir_success) {
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bufp_free(dev, isop, ep);
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- return USB_RET_NAK;
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+ return USB_RET_IOERROR;
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}
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len = isop->len;
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@@ -1045,11 +1045,14 @@ static int usbredir_handle_status(USBRedirDevice *dev,
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return USB_RET_STALL;
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case usb_redir_cancelled:
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WARNING("returning cancelled packet to HC?\n");
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+ return USB_RET_NAK;
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case usb_redir_inval:
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+ WARNING("got invalid param error from usb-host?\n");
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+ return USB_RET_NAK;
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case usb_redir_ioerror:
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case usb_redir_timeout:
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default:
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- return USB_RET_NAK;
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+ return USB_RET_IOERROR;
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}
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}
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--
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1.7.9.3
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