phone-side
/
nuttx-bb
9
0
Fork 0
Code Releases Activity

Remove non-DMA transfer support 

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@2575 7fd9a85b-ad96-42d3-883c-3090e2eb8679
This commit is contained in:
patacongo 2010-04-07 00:58:04 +00:00
parent 5480126b00
commit ffe8f0a43f
1 changed files with 27 additions and 363 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

390
nuttx/arch/arm/src/sam3u/sam3u_hsmci.c
View File

@ -73,8 +73,8 @@
/* Configuration ************************************************************/
#if !defined(CONFIG_SDIO_DMA) || !defined(CONFIG_SAM3U_DMA)
# warning "HSMCI requires CONFIG_SDIO_DMA and CONFIG_SAM3U_DMA"
#ifndef CONFIG_SAM3U_DMA
# warning "HSMCI driver requires CONFIG_SAM3U_DMA"
#endif
#ifndef CONFIG_SCHED_WORKQUEUE
@ -85,19 +85,10 @@
# define CONFIG_HSMCI_PRI NVIC_SYSH_PRIORITY_DEFAULT
#endif
#ifndef CONFIG_HSMCI_DMAPRIO
# define CONFIG_HSMCI_DMAPRIO DMA_CCR_PRIMED
#endif
#if !defined(CONFIG_DEBUG_FS) || !defined(CONFIG_DEBUG_VERBOSE)
# undef CONFIG_HSMCI_XFRDEBUG
#endif
/* Friendly CLKCR bit re-definitions ****************************************/
#define HSMCI_CLKCR_RISINGEDGE (0)
#define HSMCI_CLKCR_FALLINGEDGE HSMCI_CLKCR_NEGEDGE
/* Mode dependent settings. These depend on clock devisor settings that must
* be defined in the board-specific board.h header file: HSMCI_INIT_CLKDIV,
* HSMCI_MMCXFR_CLKDIV, and HSMCI_SDXFR_CLKDIV.
@ -126,11 +117,6 @@
DMACH_FLAG_PERIPHWIDTH_32BITS | DMACH_FLAG_PERIPHCHUNKSIZE_1 | \
DMACH_FLAG_MEMWIDTH_32BITS | DMACH_FLAG_MEMINCREMENT | DMACH_FLAG_MEMCHUNKSIZE_4)
/* FIFO sizes */
#define HSMCI_HALFFIFO_WORDS (8)
#define HSMCI_HALFFIFO_BYTES (8*4)
/* Status errors:
*
* HSMCI_INT_UNRE Data transmit underrun
@ -179,25 +165,15 @@
( HSMCI_INT_UNRE | HSMCI_INT_OVRE | HSMCI_INT_BLKOVRE | HSMCI_INT_CSTOE | \
HSMCI_INT_DTOE | HSMCI_INT_DCRCE )
#define HSMCI_DATA_RECV_ERRORS \
( HSMCI_INT_OVRE | HSMCI_INT_CSTOE | HSMCI_INT_DTOE | HSMCI_INT_DCRCE )
#define HSMCI_DATA_DMARECV_ERRORS \
( HSMCI_INT_OVRE | HSMCI_INT_BLKOVRE | HSMCI_INT_CSTOE | HSMCI_INT_DTOE | \
HSMCI_INT_DCRCE )
#define HSMCI_DATA_SEND_ERRORS \
( HSMCI_INT_UNRE | HSMCI_INT_CSTOE | HSMCI_INT_DTOE | HSMCI_INT_DCRCE )
#define HSMCI_DATA_DMASEND_ERRORS \
( HSMCI_INT_UNRE | HSMCI_INT_CSTOE | HSMCI_INT_DTOE | HSMCI_INT_DCRCE )
/* Data transfer status and interrupt mask bits */
#define HSMCI_RECV_INTS \
( HSMCI_DATA_RECV_ERRORS | HSMCI_INT_XFRDONE )
#define HSMCI_SEND_INTS \
( HSMCI_DATA_SEND_ERROR | HSMCI_INT_XFRDONE )
#define HSMCI_DMARECV_INTS \
( HSMCI_DATA_DMARECV_ERRORS | HSMCI_INT_XFRDONE | HSMCI_INT_DMADONE )
#define HSMCI_DMASEND_INTS \
@ -265,7 +241,6 @@ struct sam3u_dev_s
/* DMA data transfer support */
bool widebus; /* Required for DMA support */
bool dmamode; /* true: DMA mode transfer */
DMA_HANDLE dma; /* Handle for DMA channel */
};
@ -308,7 +283,6 @@ static void sam3u_enablewaitints(struct sam3u_dev_s *priv, uint32_t waitmask,
static void sam3u_disablewaitints(struct sam3u_dev_s *priv, sdio_eventset_t wkupevents);
static void sam3u_enablexfrints(struct sam3u_dev_s *priv, uint32_t xfrmask);
static void sam3u_disablexfrints(struct sam3u_dev_s *priv);
static inline uint32_t sam3u_getpwrctrl(void);
/* DMA Helpers **************************************************************/
@ -334,8 +308,6 @@ static void sam3u_dmacallback(DMA_HANDLE handle, void *arg, int result);
static uint8_t sam3u_log2(uint16_t value);
static void sam3u_dataconfig(uint32_t timeout, uint32_t dlen, uint32_t dctrl);
static void sam3u_datadisable(void);
static void sam3u_sendfifo(struct sam3u_dev_s *priv);
static void sam3u_recvfifo(struct sam3u_dev_s *priv);
static void sam3u_eventtimeout(int argc, uint32_t arg);
static void sam3u_endwait(struct sam3u_dev_s *priv, sdio_eventset_t wkupevent);
static void sam3u_endtransfer(struct sam3u_dev_s *priv, sdio_eventset_t wkupevent);
@ -359,10 +331,6 @@ static int sam3u_attach(FAR struct sdio_dev_s *dev);
static void sam3u_sendcmd(FAR struct sdio_dev_s *dev, uint32_t cmd,
uint32_t arg);
static int sam3u_recvsetup(FAR struct sdio_dev_s *dev, FAR uint8_t *buffer,
size_t nbytes);
static int sam3u_sendsetup(FAR struct sdio_dev_s *dev,
FAR const uint8_t *buffer, uint32_t nbytes);
static int sam3u_cancel(FAR struct sdio_dev_s *dev);
static int sam3u_waitresponse(FAR struct sdio_dev_s *dev, uint32_t cmd);
@ -388,7 +356,9 @@ static int sam3u_registercallback(FAR struct sdio_dev_s *dev,
/* DMA */
#ifdef CONFIG_SDIO_DMA
static bool sam3u_dmasupported(FAR struct sdio_dev_s *dev);
#endif
static int sam3u_dmarecvsetup(FAR struct sdio_dev_s *dev,
FAR uint8_t *buffer, size_t buflen);
static int sam3u_dmasendsetup(FAR struct sdio_dev_s *dev,
@ -412,8 +382,8 @@ struct sam3u_dev_s g_sdiodev =
.clock = sam3u_clock,
.attach = sam3u_attach,
.sendcmd = sam3u_sendcmd,
.recvsetup = sam3u_recvsetup,
.sendsetup = sam3u_sendsetup,
.recvsetup = sam3u_dmarecvsetup,
.sendsetup = sam3u_dmasendsetup,
.cancel = sam3u_cancel,
.waitresponse = sam3u_waitresponse,
.recvR1 = sam3u_recvshortcrc,
@ -427,9 +397,11 @@ struct sam3u_dev_s g_sdiodev =
.eventwait = sam3u_eventwait,
.callbackenable = sam3u_callbackenable,
.registercallback = sam3u_registercallback,
#ifdef CONFIG_SDIO_DMA
.dmasupported = sam3u_dmasupported,
.dmarecvsetup = sam3u_dmarecvsetup,
.dmasendsetup = sam3u_dmasendsetup,
#endif
},
};
@ -622,27 +594,6 @@ static void sam3u_disablexfrints(struct sam3u_dev_s *priv)
irqrestore(flags);
}
/****************************************************************************
* Name: sam3u_getpwrctrl
*
* Description:
* Return the current value of the the PWRCTRL field of the HSMCI POWER
* register. This function can be used to see the the HSMCI is power ON
* or OFF
*
* Input Parameters:
* None
*
* Returned Value:
* The current value of the the PWRCTRL field of the HSMCI POWER register.
*
****************************************************************************/
static inline uint32_t sam3u_getpwrctrl(void)
{
return getreg32(SAM3U_HSMCI_POWER) & HSMCI_POWER_PWRCTRL_MASK;
}
/****************************************************************************
* DMA Helpers
****************************************************************************/
@ -698,10 +649,7 @@ static void sam3u_sample(struct sam3u_dev_s *priv, int index)
{
struct sam3u_sampleregs_s *regs = &g_sampleregs[index];
#ifdef CONFIG_DEBUG_DMA
if (priv->dmamode)
{
sam3u_dmasample(priv->dma, &regs->dma);
}
sam3u_dmasample(priv->dma, &regs->dma);
#endif
sam3u_sdiosample(&regs->hsmci);
}
@ -744,10 +692,7 @@ static void sam3u_dumpsample(struct sam3u_dev_s *priv,
struct sam3u_sampleregs_s *regs, const char *msg)
{
#ifdef CONFIG_DEBUG_DMA
if (priv->dmamode)
{
sam3u_dmadump(priv->dma, &regs->dma, msg);
}
sam3u_dmadump(priv->dma, &regs->dma, msg);
#endif
sam3u_sdiodump(&regs->hsmci, msg);
}
@ -766,18 +711,12 @@ static void sam3u_dumpsamples(struct sam3u_dev_s *priv)
{
sam3u_dumpsample(priv, &g_sampleregs[SAMPLENDX_BEFORE_SETUP], "Before setup");
#ifdef CONFIG_DEBUG_DMA
if (priv->dmamode)
{
sam3u_dumpsample(priv, &g_sampleregs[SAMPLENDX_BEFORE_ENABLE], "Before DMA enable");
}
sam3u_dumpsample(priv, &g_sampleregs[SAMPLENDX_BEFORE_ENABLE], "Before DMA enable");
#endif
sam3u_dumpsample(priv, &g_sampleregs[SAMPLENDX_AFTER_SETUP], "After setup");
sam3u_dumpsample(priv, &g_sampleregs[SAMPLENDX_END_TRANSFER], "End of transfer");
#ifdef CONFIG_DEBUG_DMA
if (priv->dmamode)
{
sam3u_dumpsample(priv, &g_sampleregs[SAMPLENDX_DMA_CALLBACK], "DMA Callback");
}
sam3u_dumpsample(priv, &g_sampleregs[SAMPLENDX_DMA_CALLBACK], "DMA Callback");
#endif
}
#endif
@ -894,126 +833,6 @@ static void sam3u_datadisable(void)
putreg32(regval, SAM3U_HSMCI_DCTRL);
}
/****************************************************************************
* Name: sam3u_sendfifo
*
* Description:
* Send SDIO data in interrupt mode
*
* Input Parameters:
* priv - An instance of the HSMCI device interface
*
* Returned Value:
* None
*
****************************************************************************/
static void sam3u_sendfifo(struct sam3u_dev_s *priv)
{
union
{
uint32_t w;
uint8_t b[2];
} data;
/* Loop while there is more data to be sent and the RX FIFO is not full */
while (priv->remaining > 0 &&
(getreg32(SAM3U_HSMCI_SR) & HSMCI_INT_TXFIFOF) == 0)
{
/* Is there a full word remaining in the user buffer? */
if (priv->remaining >= sizeof(uint32_t))
{
/* Yes, transfer the word to the TX FIFO */
data.w = *priv->buffer++;
priv->remaining -= sizeof(uint32_t);
}
else
{
/* No.. transfer just the bytes remaining in the user buffer,
* padding with zero as necessary to extend to a full word.
*/
uint8_t *ptr = (uint8_t *)priv->remaining;
int i;
data.w = 0;
for (i = 0; i < priv->remaining; i++)
{
data.b[i] = *ptr++;
}
/* Now the transfer is finished */
priv->remaining = 0;
}
/* Put the word in the FIFO */
putreg32(data.w, SAM3U_HSMCI_FIFO);
}
}
/****************************************************************************
* Name: sam3u_recvfifo
*
* Description:
* Receive SDIO data in interrupt mode
*
* Input Parameters:
* priv - An instance of the HSMCI device interface
*
* Returned Value:
* None
*
****************************************************************************/
static void sam3u_recvfifo(struct sam3u_dev_s *priv)
{
union
{
uint32_t w;
uint8_t b[2];
} data;
/* Loop while there is space to store the data and there is more
* data available in the RX FIFO.
*/
while (priv->remaining > 0 &&
(getreg32(SAM3U_HSMCI_SR) & HSMCI_INT_RXDAVL) != 0)
{
/* Read the next word from the RX FIFO */
data.w = getreg32(SAM3U_HSMCI_FIFO);
if (priv->remaining >= sizeof(uint32_t))
{
/* Transfer the whole word to the user buffer */
*priv->buffer++ = data.w;
priv->remaining -= sizeof(uint32_t);
}
else
{
/* Transfer any trailing fractional word */
uint8_t *ptr = (uint8_t*)priv->buffer;
int i;
for (i = 0; i < priv->remaining; i++)
{
*ptr++ = data.b[i];
}
/* Now the transfer is finished */
priv->remaining = 0;
}
}
}
/****************************************************************************
* Name: sam3u_eventtimeout
*
@ -1110,21 +929,16 @@ static void sam3u_endtransfer(struct sam3u_dev_s *priv, sdio_eventset_t wkupeven
sam3u_disablexfrints(priv);
/* If this was a DMA transfer, make sure that DMA is stopped */
/* DMA debug instrumentation */
if (priv->dmamode)
{
/* DMA debug instrumentation */
sam3u_sample(priv, SAMPLENDX_END_TRANSFER);
sam3u_sample(priv, SAMPLENDX_END_TRANSFER);
/* Make sure that the DMA is stopped (it will be stopped automatically
* on normal transfers, but not necessarily when the transfer terminates
* on an error condition.
*/
/* Make sure that the DMA is stopped (it will be stopped automatically
* on normal transfers, but not necessarily when the transfer terminates
* on an error condition.
*/
sam3u_dmastop(priv->dma);
}
sam3u_dmastop(priv->dma);
/* Mark the transfer finished */
@ -1179,49 +993,11 @@ static int sam3u_interrupt(int irq, void *context)
pending = enabled & priv->xfrmask;
if (pending != 0)
{
if (!priv->dmamode)
{
/* Is the RX FIFO half full or more? Is so then we must be
* processing a receive transaction.
*/
if ((pending & HSMCI_INT_RXFIFOHF) != 0)
{
/* Receive data from the RX FIFO */
sam3u_recvfifo(priv);
}
/* Otherwise, Is the transmit FIFO half empty or less? If so we must
* be processing a send transaction. NOTE: We can't be processing
* both!
*/
else if ((pending & HSMCI_INT_TXFIFOHE) != 0)
{
/* Send data via the TX FIFO */
sam3u_sendfifo(priv);
}
}
/* Handle data end events */
if ((pending & HSMCI_INT_BLKE) != 0)
{
/* Handle any data remaining the RX FIFO. If the RX FIFO is
* less than half full at the end of the transfer, then no
* half-full interrupt will be received.
*/
if (!priv->dmamode)
{
/* Receive data from the RX FIFO */
sam3u_recvfifo(priv);
}
/* Then terminate the transfer */
/* Terminate the transfer */
sam3u_endtransfer(priv, SDIOWAIT_TRANSFERDONE);
}
@ -1398,7 +1174,6 @@ static void sam3u_reset(FAR struct sdio_dev_s *dev)
/* DMA data transfer support */
priv->widebus = false; /* Required for DMA support */
priv->dmamode = false; /* true: DMA mode transfer */
irqrestore(flags);
}
@ -1609,112 +1384,6 @@ static void sam3u_sendcmd(FAR struct sdio_dev_s *dev, uint32_t cmd, uint32_t arg
putreg32(regval, SAM3U_HSMCI_CMDR);
}
/****************************************************************************
* Name: sam3u_recvsetup
*
* Description:
* Setup hardware in preparation for data trasfer from the card in non-DMA
* (interrupt driven mode). This method will do whatever controller setup
* is necessary. This would be called for SD memory just BEFORE sending
* CMD13 (SEND_STATUS), CMD17 (READ_SINGLE_BLOCK), CMD18
* (READ_MULTIPLE_BLOCKS), ACMD51 (SEND_SCR), etc. Normally, HSMCI_WAITEVENT
* will be called to receive the indication that the transfer is complete.
*
* Input Parameters:
* dev - An instance of the SDIO device interface
* buffer - Address of the buffer in which to receive the data
* nbytes - The number of bytes in the transfer
*
* Returned Value:
* Number of bytes sent on success; a negated errno on failure
*
****************************************************************************/
static int sam3u_recvsetup(FAR struct sdio_dev_s *dev, FAR uint8_t *buffer,
size_t nbytes)
{
struct sam3u_dev_s *priv = (struct sam3u_dev_s *)dev;
uint32_t dblocksize;
DEBUGASSERT(priv != NULL && buffer != NULL && nbytes > 0);
DEBUGASSERT(((uint32_t)buffer & 3) == 0);
/* Reset the DPSM configuration */
sam3u_datadisable();
sam3u_sampleinit();
sam3u_sample(priv, SAMPLENDX_BEFORE_SETUP);
/* Save the destination buffer information for use by the interrupt handler */
priv->buffer = (uint32_t*)buffer;
priv->remaining = nbytes;
priv->dmamode = false;
/* Then set up the SDIO data path */
dblocksize = sam3u_log2(nbytes) << HSMCI_DCTRL_DBLOCKSIZE_SHIFT;
sam3u_dataconfig(HSMCI_DTIMER_DATATIMEOUT, nbytes, dblocksize|HSMCI_DCTRL_DTDIR);
/* And enable interrupts */
sam3u_enablexfrints(priv, HSMCI_RECV_INTS);
sam3u_sample(priv, SAMPLENDX_AFTER_SETUP);
return OK;
}
/****************************************************************************
* Name: sam3u_sendsetup
*
* Description:
* Setup hardware in preparation for data trasfer from the card. This method
* will do whatever controller setup is necessary. This would be called
* for SD memory just AFTER sending CMD24 (WRITE_BLOCK), CMD25
* (WRITE_MULTIPLE_BLOCK), ... and before HSMCI_SENDDATA is called.
*
* Input Parameters:
* dev - An instance of the SDIO device interface
* buffer - Address of the buffer containing the data to send
* nbytes - The number of bytes in the transfer
*
* Returned Value:
* Number of bytes sent on success; a negated errno on failure
*
****************************************************************************/
static int sam3u_sendsetup(FAR struct sdio_dev_s *dev, FAR const uint8_t *buffer,
size_t nbytes)
{
struct sam3u_dev_s *priv = (struct sam3u_dev_s *)dev;
uint32_t dblocksize;
DEBUGASSERT(priv != NULL && buffer != NULL && nbytes > 0);
DEBUGASSERT(((uint32_t)buffer & 3) == 0);
/* Reset the DPSM configuration */
sam3u_datadisable();
sam3u_sampleinit();
sam3u_sample(priv, SAMPLENDX_BEFORE_SETUP);
/* Save the source buffer information for use by the interrupt handler */
priv->buffer = (uint32_t*)buffer;
priv->remaining = nbytes;
priv->dmamode = false;
/* Then set up the HSMCI data path */
dblocksize = sam3u_log2(nbytes) << HSMCI_DCTRL_DBLOCKSIZE_SHIFT;
sam3u_dataconfig(HSMCI_DTIMER_DATATIMEOUT, nbytes, dblocksize);
/* Enable TX interrrupts */
sam3u_enablexfrints(priv, HSMCI_SEND_INTS);
sam3u_sample(priv, SAMPLENDX_AFTER_SETUP);
return OK;
}
/****************************************************************************
* Name: sam3u_cancel
*
@ -1749,17 +1418,12 @@ static int sam3u_cancel(FAR struct sdio_dev_s *dev)
(void)wd_cancel(priv->waitwdog);
/* If this was a DMA transfer, make sure that DMA is stopped */
/* Make sure that the DMA is stopped (it will be stopped automatically
* on normal transfers, but not necessarily when the transfer terminates
* on an error condition.
*/
if (priv->dmamode)
{
/* Make sure that the DMA is stopped (it will be stopped automatically
* on normal transfers, but not necessarily when the transfer terminates
* on an error condition.
*/
sam3u_dmastop(priv->dma);
}
sam3u_dmastop(priv->dma);
/* Mark no transfer in progress */
@ -2287,10 +1951,12 @@ static int sam3u_registercallback(FAR struct sdio_dev_s *dev,
*
****************************************************************************/
#ifdef CONFIG_SDIO_DMA
static bool sam3u_dmasupported(FAR struct sdio_dev_s *dev)
{
return true;
}
#endif
/****************************************************************************
* Name: sam3u_dmarecvsetup
@ -2336,7 +2002,6 @@ static int sam3u_dmarecvsetup(FAR struct sdio_dev_s *dev, FAR uint8_t *buffer,
priv->buffer = (uint32_t*)buffer;
priv->remaining = buflen;
priv->dmamode = true;
/* Then set up the HSMCI data path */
@ -2404,7 +2069,6 @@ static int sam3u_dmasendsetup(FAR struct sdio_dev_s *dev,
priv->buffer = (uint32_t*)buffer;
priv->remaining = buflen;
priv->dmamode = true;
/* Then set up the HSMCI data path */