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author | Gregory Nutt <gnutt@nuttx.org> | 2013-09-08 13:42:56 -0600 |
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committer | Gregory Nutt <gnutt@nuttx.org> | 2013-09-08 13:42:56 -0600 |
commit | 8b5a8f98e261f31f15cae44fe8847ada4a0654e0 (patch) | |
tree | 7b76274110ab8ea553ae6629208a5bfa7410df90 /nuttx | |
parent | 56ecc7ff06b521dbda03a4c7b6274459a5709ab2 (diff) | |
download | px4-nuttx-8b5a8f98e261f31f15cae44fe8847ada4a0654e0.tar.gz px4-nuttx-8b5a8f98e261f31f15cae44fe8847ada4a0654e0.tar.bz2 px4-nuttx-8b5a8f98e261f31f15cae44fe8847ada4a0654e0.zip |
Trivial updates assocaited with USB host mass storage and SAMA5 EHCI
Diffstat (limited to 'nuttx')
-rwxr-xr-x | nuttx/arch/arm/src/sama5/sam_ehci.c | 32 | ||||
-rw-r--r-- | nuttx/drivers/usbhost/usbhost_storage.c | 13 | ||||
-rwxr-xr-x | nuttx/include/nuttx/usb/ehci.h | 4 |
3 files changed, 39 insertions, 10 deletions
diff --git a/nuttx/arch/arm/src/sama5/sam_ehci.c b/nuttx/arch/arm/src/sama5/sam_ehci.c index 5ea84870a..b8741d20a 100755 --- a/nuttx/arch/arm/src/sama5/sam_ehci.c +++ b/nuttx/arch/arm/src/sama5/sam_ehci.c @@ -2415,9 +2415,33 @@ static int sam_qh_ioccheck(struct sam_qh_s *qh, uint32_t **bp, void *arg) { /* An error occurred */ - udbg("ERROR: EP%d TOKEN=%08x", epinfo->epno, token); epinfo->status = (token & QH_TOKEN_STATUS_MASK) >> QH_TOKEN_STATUS_SHIFT; - epinfo->result = -EIO; + + /* The HALT condition is set on a variety of conditions: babble, error + * counter countdown to zero, or a STALL. If we can rule out babble + * (babble bit not set) and if the error counter is non-zero, then we can + * assume a STALL. In this case, we return -PERM to inform the class + * driver of the stall condition. + */ + + if ((token & (QH_TOKEN_BABBLE | QH_TOKEN_HALTED)) == QH_TOKEN_HALTED && + (token & QH_TOKEN_CERR_MASK) != 0) + { + /* It is a stall, Note the that the data toggle is reset + * after the stall. + */ + + udbg("EP%d Stalled: TOKEN=%08x\n", epinfo->epno, token); + epinfo->result = -EPERM; + epinfo->toggle = 0; + } + else + { + /* Otherwise, it is some kind of data transfer error */ + + udbg("ERROR: EP%d TOKEN=%08x\n", epinfo->epno, token); + epinfo->result = -EIO; + } } /* Is there a thread waiting for this transfer to complete? */ @@ -3921,7 +3945,7 @@ FAR struct usbhost_connection_s *sam_ehci_initialize(int controller) { irqstate_t flags; uint32_t regval; -#ifdef CONFIG_DEBUG_USB +#if defined(CONFIG_DEBUG_USB) && defined(CONFIG_DEBUG_VERBOSE) uint16_t regval16; unsigned int nports; #endif @@ -4152,7 +4176,7 @@ FAR struct usbhost_connection_s *sam_ehci_initialize(int controller) sam_putreg(ECHI_INT_ALLINTS, &HCOR->usbsts); -#ifdef CONFIG_DEBUG +#if defined(CONFIG_DEBUG_USB) && defined(CONFIG_DEBUG_VERBOSE) /* Show the ECHI version */ regval16 = sam_swap16(HCCR->hciversion); diff --git a/nuttx/drivers/usbhost/usbhost_storage.c b/nuttx/drivers/usbhost/usbhost_storage.c index 89ec6238f..d72203bdf 100644 --- a/nuttx/drivers/usbhost/usbhost_storage.c +++ b/nuttx/drivers/usbhost/usbhost_storage.c @@ -102,8 +102,9 @@ #define USBHOST_BOUTFOUND 0x04 #define USBHOST_ALLFOUND 0x07 -#define USBHOST_MAX_RETRIES 100 -#define USBHOST_MAX_CREFS 0x7fff +#define USBHOST_RETRY_USEC (50*1000) /* Retry each 50 milliseconds */ +#define USBHOST_MAX_RETRIES 100 /* Give up after 5 seconds */ +#define USBHOST_MAX_CREFS INT16_MAX /* Max cref count before signed overflow */ /**************************************************************************** * Private Types @@ -700,6 +701,7 @@ static inline int usbhost_maxlunreq(FAR struct usbhost_state_s *priv) *(priv->tbuffer) = 0; } + return OK; } @@ -1218,9 +1220,12 @@ static inline int usbhost_initvolume(FAR struct usbhost_state_s *priv) /* Wait just a bit */ - usleep(50*1000); + usleep(USBHOST_RETRY_USEC); - /* Send TESTUNITREADY to see if the unit is ready */ + /* Send TESTUNITREADY to see if the unit is ready. The most likely error + * error that can occur here is a a stall which simply means that the + * the device is not yet able to respond. + */ ret = usbhost_testunitready(priv); if (ret == OK) diff --git a/nuttx/include/nuttx/usb/ehci.h b/nuttx/include/nuttx/usb/ehci.h index dd96514d1..a10e6c99e 100755 --- a/nuttx/include/nuttx/usb/ehci.h +++ b/nuttx/include/nuttx/usb/ehci.h @@ -579,7 +579,7 @@ # define QTD_TOKEN_DBERR (1 << 5) /* Bit 5 Data Buffer Error */ # define QTD_TOKEN_HALTED (1 << 6) /* Bit 6 Halted */ # define QTD_TOKEN_ACTIVE (1 << 7) /* Bit 7 Active */ -# define QTD_TOKEN_ERRORS (0x7c << QTD_TOKEN_STATUS_SHIFT) +# define QTD_TOKEN_ERRORS (0x78 << QTD_TOKEN_STATUS_SHIFT) #define QTD_TOKEN_PID_SHIFT (8) /* Bits 8-9: PID Code */ #define QTD_TOKEN_PID_MASK (3 << QTD_TOKEN_PID_SHIFT) # define QTD_TOKEN_PID_OUT (0 << QTD_TOKEN_PID_SHIFT) /* OUT Token generates token (E1H) */ @@ -700,7 +700,7 @@ # define QH_TOKEN_DBERR (1 << 5) /* Bit 5 Data Buffer Error */ # define QH_TOKEN_HALTED (1 << 6) /* Bit 6 Halted */ # define QH_TOKEN_ACTIVE (1 << 7) /* Bit 7 Active */ -# define QH_TOKEN_ERRORS (0x7c << QH_TOKEN_STATUS_SHIFT) +# define QH_TOKEN_ERRORS (0x78 << QH_TOKEN_STATUS_SHIFT) #define QH_TOKEN_PID_SHIFT (8) /* Bits 8-9: PID Code */ #define QH_TOKEN_PID_MASK (3 << QH_TOKEN_PID_SHIFT) # define QH_TOKEN_PID_OUT (0 << QH_TOKEN_PID_SHIFT) /* OUT Token generates token (E1H) */ |