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STM32 OTGFS, STM32 L4 and F7: Adapt Janne Rosberg's patch to STM32 OTGHS host to OTGFS host, and to similar implements for L4 and F7.

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This commit is contained in:
Gregory Nutt 2017-03-07 07:17:24 -06:00
parent ce2845c5c3
commit 0631c1aafa
4 changed files with 125 additions and 76 deletions
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66
arch/arm/src/stm32/stm32_otgfshost.c
View File

@ -1827,20 +1827,20 @@ static ssize_t stm32_in_transfer(FAR struct stm32_usbhost_s *priv, int chidx,
FAR uint8_t *buffer, size_t buflen)
{
FAR struct stm32_chan_s *chan;
systime_t start;
systime_t elapsed;
ssize_t xfrd;
int ret;
/* Loop until the transfer completes (i.e., buflen is decremented to zero)
* or a fatal error occurs (any error other than a simple NAK)
* or a fatal error occurs any error other than a simple NAK. NAK would
* simply indicate the end of the transfer (short-transfer).
*/
chan = &priv->chan[chidx];
chan->buffer = buffer;
chan->buflen = buflen;
chan->xfrd = 0;
xfrd = 0;
start = clock_systimer();
while (chan->xfrd < chan->buflen)
{
/* Set up for the wait BEFORE starting the transfer */
@ -1865,36 +1865,48 @@ static ssize_t stm32_in_transfer(FAR struct stm32_usbhost_s *priv, int chidx,
ret = stm32_chan_wait(priv, chan);
/* EAGAIN indicates that the device NAKed the transfer and we need
* do try again. Anything else (success or other errors) will
* cause use to return
/* EAGAIN indicates that the device NAKed the transfer. In the case
* of a NAK, we do not retry but rather assume that the transfer is
* commplete and return the data that we have received. Retry could
* be handled in class driver.
*/
if (ret < 0)
{
usbhost_trace1(OTGFS_TRACE1_TRNSFRFAILED, ret);
/* Check for a special case: If (1) the transfer was NAKed and (2)
* no Tx FIFO empty or Rx FIFO not-empty event occurred, then we
* should be able to just flush the Rx and Tx FIFOs and try again.
* We can detect this latter case because the then the transfer
* buffer pointer and buffer size will be unaltered.
/* The transfer failed. If we received a NAK, return all data
* buffered so far (if any).
*/
elapsed = clock_systimer() - start;
if (ret != -EAGAIN || /* Not a NAK condition OR */
elapsed >= STM32_DATANAK_DELAY || /* Timeout has elapsed OR */
chan->xfrd > 0) /* Data has been partially transferred */
if (ret == -EAGAIN)
{
/* Break out and return the error */
/* Was data buffered prior to the NAK? */
uerr("ERROR: stm32_chan_wait failed: %d\n", ret);
return (ssize_t)ret;
if (xfrd > 0)
{
/* Yes, return the amount of data received */
return xfrd;
}
else
{
/* No... Break out and return the NAK */
return (ssize_t)ret;
}
}
usbhost_trace1(OTGFS_TRACE1_TRNSFRFAILED, ret);
/* Break out and return the error */
uerr("ERROR: stm32_chan_wait failed: %d\n", ret);
return (ssize_t)ret;
}
xfrd += chan->xfrd;
}
return (ssize_t)chan->xfrd;
return xfrd;
}
/****************************************************************************
@ -2557,7 +2569,8 @@ static inline void stm32_gint_hcinisr(FAR struct stm32_usbhost_s *priv,
#if 1
/* Halt the interrupt channel */
if (chan->eptype == OTGFS_EPTYPE_INTR)
if (chan->eptype == OTGFS_EPTYPE_INTR ||
chan->eptype == OTGFS_EPTYPE_BULK)
{
/* Halt the channel -- the CHH interrupt is expected next */
@ -2568,11 +2581,13 @@ static inline void stm32_gint_hcinisr(FAR struct stm32_usbhost_s *priv,
* REVISIT: This can cause a lot of interrupts!
*/
else if (chan->eptype == OTGFS_EPTYPE_CTRL ||
chan->eptype == OTGFS_EPTYPE_BULK)
else if (chan->eptype == OTGFS_EPTYPE_CTRL /*||
chan->eptype == OTGFS_EPTYPE_BULK*/)
{
/* Re-activate the channel by clearing CHDIS and assuring that
* CHENA is set
*
* TODO: set channel reason to NACK?
*/
regval = stm32_getreg(STM32_OTGFS_HCCHAR(chidx));
@ -2580,6 +2595,7 @@ static inline void stm32_gint_hcinisr(FAR struct stm32_usbhost_s *priv,
regval &= ~OTGFS_HCCHAR_CHDIS;
stm32_putreg(STM32_OTGFS_HCCHAR(chidx), regval);
}
#else
/* Halt all transfers on the NAK -- the CHH interrupt is expected next */

3
arch/arm/src/stm32/stm32_otghshost.c
View File

@ -2591,9 +2591,10 @@ static inline void stm32_gint_hcinisr(FAR struct stm32_usbhost_s *priv,
{
/* Re-activate the channel by clearing CHDIS and assuring that
* CHENA is set
*
* TODO: set channel reason to NACK?
*/
// TODO: set channel reason to NACK?
regval = stm32_getreg(STM32_OTGHS_HCCHAR(chidx));
regval |= OTGHS_HCCHAR_CHENA;
regval &= ~OTGHS_HCCHAR_CHDIS;

66
arch/arm/src/stm32f7/stm32_otghost.c
View File

@ -1826,20 +1826,20 @@ static ssize_t stm32_in_transfer(FAR struct stm32_usbhost_s *priv, int chidx,
FAR uint8_t *buffer, size_t buflen)
{
FAR struct stm32_chan_s *chan;
systime_t start;
systime_t elapsed;
ssize_t xfrd;
int ret;
/* Loop until the transfer completes (i.e., buflen is decremented to zero)
* or a fatal error occurs (any error other than a simple NAK)
* or a fatal error occurs any error other than a simple NAK. NAK would
* simply indicate the end of the transfer (short-transfer).
*/
chan = &priv->chan[chidx];
chan->buffer = buffer;
chan->buflen = buflen;
chan->xfrd = 0;
xfrd = 0;
start = clock_systimer();
while (chan->xfrd < chan->buflen)
{
/* Set up for the wait BEFORE starting the transfer */
@ -1864,36 +1864,48 @@ static ssize_t stm32_in_transfer(FAR struct stm32_usbhost_s *priv, int chidx,
ret = stm32_chan_wait(priv, chan);
/* EAGAIN indicates that the device NAKed the transfer and we need
* do try again. Anything else (success or other errors) will
* cause use to return
/* EAGAIN indicates that the device NAKed the transfer. In the case
* of a NAK, we do not retry but rather assume that the transfer is
* commplete and return the data that we have received. Retry could
* be handled in class driver.
*/
if (ret < 0)
{
usbhost_trace1(OTG_TRACE1_TRNSFRFAILED, ret);
/* Check for a special case: If (1) the transfer was NAKed and (2)
* no Tx FIFO empty or Rx FIFO not-empty event occurred, then we
* should be able to just flush the Rx and Tx FIFOs and try again.
* We can detect this latter case because the then the transfer
* buffer pointer and buffer size will be unaltered.
/* The transfer failed. If we received a NAK, return all data
* buffered so far (if any).
*/
elapsed = clock_systimer() - start;
if (ret != -EAGAIN || /* Not a NAK condition OR */
elapsed >= STM32_DATANAK_DELAY || /* Timeout has elapsed OR */
chan->xfrd > 0) /* Data has been partially transferred */
if (ret == -EAGAIN)
{
/* Break out and return the error */
/* Was data buffered prior to the NAK? */
uerr("ERROR: stm32_chan_wait failed: %d\n", ret);
return (ssize_t)ret;
if (xfrd > 0)
{
/* Yes, return the amount of data received */
return xfrd;
}
else
{
/* No... Break out and return the NAK */
return (ssize_t)ret;
}
}
usbhost_trace1(OTG_TRACE1_TRNSFRFAILED, ret);
/* Break out and return the error */
uerr("ERROR: stm32_chan_wait failed: %d\n", ret);
return (ssize_t)ret;
}
xfrd += chan->xfrd;
}
return (ssize_t)chan->xfrd;
return xfrd;
}
/****************************************************************************
@ -2556,7 +2568,8 @@ static inline void stm32_gint_hcinisr(FAR struct stm32_usbhost_s *priv,
#if 1
/* Halt the interrupt channel */
if (chan->eptype == OTG_EPTYPE_INTR)
if (chan->eptype == OTG_EPTYPE_INTR ||
chan->eptype == OTG_EPTYPE_BULK)
{
/* Halt the channel -- the CHH interrupt is expected next */
@ -2567,11 +2580,13 @@ static inline void stm32_gint_hcinisr(FAR struct stm32_usbhost_s *priv,
* REVISIT: This can cause a lot of interrupts!
*/
else if (chan->eptype == OTG_EPTYPE_CTRL ||
chan->eptype == OTG_EPTYPE_BULK)
else if (chan->eptype == OTG_EPTYPE_CTRL /*||
chan->eptype == OTG_EPTYPE_BULK*/)
{
/* Re-activate the channel by clearing CHDIS and assuring that
* CHENA is set
*
* TODO: set channel reason to NACK?
*/
regval = stm32_getreg(STM32_OTG_HCCHAR(chidx));
@ -2579,6 +2594,7 @@ static inline void stm32_gint_hcinisr(FAR struct stm32_usbhost_s *priv,
regval &= ~OTG_HCCHAR_CHDIS;
stm32_putreg(STM32_OTG_HCCHAR(chidx), regval);
}
#else
/* Halt all transfers on the NAK -- the CHH interrupt is expected next */

66
arch/arm/src/stm32l4/stm32l4_otgfshost.c
View File

@ -1831,20 +1831,20 @@ static ssize_t stm32l4_in_transfer(FAR struct stm32l4_usbhost_s *priv,
size_t buflen)
{
FAR struct stm32l4_chan_s *chan;
systime_t start;
systime_t elapsed;
ssize_t xfrd;
int ret;
/* Loop until the transfer completes (i.e., buflen is decremented to zero)
* or a fatal error occurs (any error other than a simple NAK)
* or a fatal error occurs any error other than a simple NAK. NAK would
* simply indicate the end of the transfer (short-transfer).
*/
chan = &priv->chan[chidx];
chan->buffer = buffer;
chan->buflen = buflen;
chan->xfrd = 0;
xfrd = 0;
start = clock_systimer();
while (chan->xfrd < chan->buflen)
{
/* Set up for the wait BEFORE starting the transfer */
@ -1869,36 +1869,48 @@ static ssize_t stm32l4_in_transfer(FAR struct stm32l4_usbhost_s *priv,
ret = stm32l4_chan_wait(priv, chan);
/* EAGAIN indicates that the device NAKed the transfer and we need
* do try again. Anything else (success or other errors) will
* cause use to return
/* EAGAIN indicates that the device NAKed the transfer. In the case
* of a NAK, we do not retry but rather assume that the transfer is
* commplete and return the data that we have received. Retry could
* be handled in class driver.
*/
if (ret < 0)
{
usbhost_trace1(OTGFS_TRACE1_TRNSFRFAILED, ret);
/* Check for a special case: If (1) the transfer was NAKed and (2)
* no Tx FIFO empty or Rx FIFO not-empty event occurred, then we
* should be able to just flush the Rx and Tx FIFOs and try again.
* We can detect this latter case because the then the transfer
* buffer pointer and buffer size will be unaltered.
/* The transfer failed. If we received a NAK, return all data
* buffered so far (if any).
*/
elapsed = clock_systimer() - start;
if (ret != -EAGAIN || /* Not a NAK condition OR */
elapsed >= STM32L4_DATANAK_DELAY || /* Timeout has elapsed OR */
chan->xfrd > 0) /* Data has been partially transferred */
if (ret == -EAGAIN)
{
/* Break out and return the error */
/* Was data buffered prior to the NAK? */
uerr("ERROR: stm32l4_chan_wait failed: %d\n", ret);
return (ssize_t)ret;
if (xfrd > 0)
{
/* Yes, return the amount of data received */
return xfrd;
}
else
{
/* No... Break out and return the NAK */
return (ssize_t)ret;
}
}
usbhost_trace1(OTGFS_TRACE1_TRNSFRFAILED, ret);
/* Break out and return the error */
uerr("ERROR: stm32l4_chan_wait failed: %d\n", ret);
return (ssize_t)ret;
}
xfrd += chan->xfrd;
}
return (ssize_t)chan->xfrd;
return xfrd;
}
/****************************************************************************
@ -2562,7 +2574,8 @@ static inline void stm32l4_gint_hcinisr(FAR struct stm32l4_usbhost_s *priv,
#if 1
/* Halt the interrupt channel */
if (chan->eptype == OTGFS_EPTYPE_INTR)
if (chan->eptype == OTGFS_EPTYPE_INTR ||
chan->eptype == OTGFS_EPTYPE_BULK)
{
/* Halt the channel -- the CHH interrupt is expected next */
@ -2573,11 +2586,13 @@ static inline void stm32l4_gint_hcinisr(FAR struct stm32l4_usbhost_s *priv,
* REVISIT: This can cause a lot of interrupts!
*/
else if (chan->eptype == OTGFS_EPTYPE_CTRL ||
chan->eptype == OTGFS_EPTYPE_BULK)
else if (chan->eptype == OTGFS_EPTYPE_CTRL /*||
chan->eptype == OTGFS_EPTYPE_BULK*/)
{
/* Re-activate the channel by clearing CHDIS and assuring that
* CHENA is set
*
* TODO: set channel reason to NACK?
*/
regval = stm32l4_getreg(STM32L4_OTGFS_HCCHAR(chidx));
@ -2585,6 +2600,7 @@ static inline void stm32l4_gint_hcinisr(FAR struct stm32l4_usbhost_s *priv,
regval &= ~OTGFS_HCCHAR_CHDIS;
stm32l4_putreg(STM32L4_OTGFS_HCCHAR(chidx), regval);
}
#else
/* Halt all transfers on the NAK -- the CHH interrupt is expected next */