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