mirror of
https://github.com/apache/nuttx.git
synced 2025-01-13 09:49:21 +08:00
Integrating SHDC
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1828 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
parent
e832c2ac9b
commit
f937ea210c
8 changed files with 85 additions and 82 deletions
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@ -426,7 +426,7 @@ static void ssi_semtake(sem_t *sem)
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static void ssi_txnull(struct lm32_ssidev_s *priv)
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{
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ssivdbg("TX: ones\n");
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ssivdbg("TX: ->0xffff\n");
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ssi_putreg(priv, LM3S_SSI_DR_OFFSET, 0xffff);
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}
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@ -545,7 +545,9 @@ static inline boolean ssi_rxfifoempty(struct lm32_ssidev_s *priv)
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static int ssi_performtx(struct lm32_ssidev_s *priv)
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{
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#ifndef CONFIG_SSI_POLLWAIT
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uint32 regval;
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#endif
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int ntxd = 0; /* Number of words written to Tx FIFO */
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/* Check if the Tx FIFO is full */
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@ -559,8 +561,15 @@ static int ssi_performtx(struct lm32_ssidev_s *priv)
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/* No.. Transfer more words until either the Tx FIFO is full or
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* until all of the user provided data has been sent.
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*/
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#if 1
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/* Further limit the number of words that we put into the Tx
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* FIFO to half the half the FIFO depth. Otherwise, we could
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* overrun the Rx FIFO on a very fast SSI bus.
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*/
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for (; ntxd < priv->ntxwords && ntxd < LM3S_TXFIFO_WORDS/2 && !ssi_txfifofull(priv); ntxd++)
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#else
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for (; ntxd < priv->ntxwords && !ssi_txfifofull(priv); ntxd++)
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#endif
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{
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priv->txword(priv);
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}
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@ -809,7 +818,7 @@ static int ssi_transfer(struct lm32_ssidev_s *priv, const void *txbuffer,
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*
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* Returned Value:
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* On success, a reference to the private data structgure for this IRQ.
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* NULL on failrue.
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* NULL on failure.
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*
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****************************************************************************/
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@ -203,6 +203,8 @@ Eagle100-specific Configuration Options
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CONFIG_SSI0_DISABLE - Select to disable support for SSI0
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CONFIG_SSI1_DISABLE - Select to disable support for SSI1
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CONFIG_SSI_POLLWAIT - Select to disable interrupt driven SSI support.
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Poll-waiting is recommended if the interrupt rate would be to
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high in the interrupt driven case.
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CONFIG_LM3S_ETHERNET - This must be set (along with CONFIG_NET)
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to build the LM3S Ethernet driver
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@ -129,7 +129,7 @@ CONFIG_UART1_2STOP=0
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#
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CONFIG_SSI0_DISABLE=n
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CONFIG_SSI1_DISABLE=y
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CONFIG_SSI_POLLWAIT=n
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CONFIG_SSI_POLLWAIT=y
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#
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# LM3S6918 specific serial device driver settings
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@ -129,7 +129,7 @@ CONFIG_UART1_2STOP=0
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#
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CONFIG_SSI0_DISABLE=n
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CONFIG_SSI1_DISABLE=y
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CONFIG_SSI_POLLWAIT=n
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CONFIG_SSI_POLLWAIT=y
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#
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# LM3S6918 specific serial device driver settings
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@ -129,7 +129,7 @@ CONFIG_UART1_2STOP=0
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#
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CONFIG_SSI0_DISABLE=n
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CONFIG_SSI1_DISABLE=y
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CONFIG_SSI_POLLWAIT=n
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CONFIG_SSI_POLLWAIT=y
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#
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# LM3S6918 specific serial device driver settings
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@ -129,7 +129,7 @@ CONFIG_UART1_2STOP=0
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#
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CONFIG_SSI0_DISABLE=n
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CONFIG_SSI1_DISABLE=y
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CONFIG_SSI_POLLWAIT=n
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CONFIG_SSI_POLLWAIT=y
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#
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# LM3S6918 specific serial device driver settings
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@ -90,15 +90,6 @@
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#define MMCSD_SLOTSTATUS_MEDIACHGD 0x08 /* Media changed in slot */
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/* Values in the MMC/SD command table ***************************************/
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/* These define the expected arguments of the MMC/SD command */
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#define MMCSD_CMDARG_NONE 0
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#define MMCSD_CMDARG_BLKLEN 1
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#define MMCSD_CMDARG_ADDRESS 2
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#define MMCSD_CMDARG_NSECT 3
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#define MMCSD_CMDARG_1AA 4
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#define MMCSD_CMDARG_DUMMY 5
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/* These define the value returned by the MMC/SD command */
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#define MMCSD_CMDRESP_R1 0
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@ -117,6 +108,7 @@
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#define MMCSD_DELAY_250MS (CLK_TCK/4 + 1)
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#define MMCSD_DELAY_500MS (CLK_TCK/2 + 1)
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#define MMCSD_DELAY_1SEC (CLK_TCK + 1)
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#define MMCSD_DELAY_10SEC (10 * CLK_TCK + 1)
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#define ELAPSED_TIME(t) (g_system_timer-(t))
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#define START_TIME (g_system_timer)
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@ -150,7 +142,6 @@ struct mmcsd_slot_s
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struct mmcsd_cmdinfo_s
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{
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ubyte cmd;
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ubyte arg;
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ubyte resp;
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ubyte chksum;
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};
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@ -219,10 +210,10 @@ static const struct block_operations g_bops =
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#if defined(CONFIG_FS_WRITABLE) && !defined(CONFIG_MMCSD_READONLY)
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mmcsd_write, /* write */
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#else
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NULL, /* write */
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NULL, /* write */
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#endif
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mmcsd_geometry, /* geometry */
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NULL /* ioctl */
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NULL /* ioctl */
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};
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/* A slot structure allocated for each configured slot */
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@ -277,13 +268,13 @@ static const uint32 g_transpeedtu[16] =
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#define MAX_USTUNDX 2
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static const uint16 g_taactu[8] =
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{
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/* Units of nanoseconds */
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/* Units of nanoseconds */
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1, /* 0: 1 ns */
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10, /* 1: 10 ns */
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100, /* 2: 100 ns */
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/* Units of microseconds */
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/* Units of microseconds */
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1, /* 3: 1 us 1,000 ns */
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10, /* 4: 10 us 10,000 ns */
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@ -302,21 +293,21 @@ static const uint16 g_taactv[] =
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/* Commands *****************************************************************/
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static const struct mmcsd_cmdinfo_s g_cmd0 = {CMD0, MMCSD_CMDARG_NONE, MMCSD_CMDRESP_R1, 0x95};
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static const struct mmcsd_cmdinfo_s g_cmd1 = {CMD1, MMCSD_CMDARG_NONE, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd8 = {CMD8, MMCSD_CMDARG_1AA, MMCSD_CMDRESP_R7, 0x87};
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static const struct mmcsd_cmdinfo_s g_cmd9 = {CMD9, MMCSD_CMDARG_NONE, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd10 = {CMD10, MMCSD_CMDARG_NONE, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd12 = {CMD12, MMCSD_CMDARG_NONE, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd16 = {CMD16, MMCSD_CMDARG_BLKLEN, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd17 = {CMD17, MMCSD_CMDARG_ADDRESS, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd18 = {CMD18, MMCSD_CMDARG_ADDRESS, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd24 = {CMD24, MMCSD_CMDARG_ADDRESS, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd25 = {CMD25, MMCSD_CMDARG_ADDRESS, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd55 = {CMD55, MMCSD_CMDARG_NONE, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd58 = {CMD58, MMCSD_CMDARG_NONE, MMCSD_CMDRESP_R3, 0xff};
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static const struct mmcsd_cmdinfo_s g_acmd23 = {ACMD23, MMCSD_CMDARG_NSECT, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_acmd41 = {ACMD41, MMCSD_CMDARG_NONE, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd0 = {CMD0, MMCSD_CMDRESP_R1, 0x95};
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static const struct mmcsd_cmdinfo_s g_cmd1 = {CMD1, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd8 = {CMD8, MMCSD_CMDRESP_R7, 0x87};
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static const struct mmcsd_cmdinfo_s g_cmd9 = {CMD9, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd10 = {CMD10, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd12 = {CMD12, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd16 = {CMD16, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd17 = {CMD17, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd18 = {CMD18, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd24 = {CMD24, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd25 = {CMD25, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd55 = {CMD55, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_cmd58 = {CMD58, MMCSD_CMDRESP_R3, 0xff};
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static const struct mmcsd_cmdinfo_s g_acmd23 = {ACMD23, MMCSD_CMDRESP_R1, 0xff};
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static const struct mmcsd_cmdinfo_s g_acmd41 = {ACMD41, MMCSD_CMDRESP_R1, 0xff};
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/****************************************************************************
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* Private Functions
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@ -399,22 +390,12 @@ static uint32 mmcsd_sendcmd(FAR struct mmcsd_slot_s *slot,
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SPI_SEND(spi, cmd->cmd);
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/* Send command's arguments */
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/* Send command's arguments (should be zero if there are no arguements) */
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if (cmd->arg == MMCSD_CMDARG_NONE)
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{
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SPI_SEND(spi, 0x00);
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SPI_SEND(spi, 0x00);
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SPI_SEND(spi, 0x00);
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SPI_SEND(spi, 0x00);
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}
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else
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{
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SPI_SEND(spi, arg >> 24);
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SPI_SEND(spi, arg >> 16);
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SPI_SEND(spi, arg >> 8);
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SPI_SEND(spi, arg);
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}
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SPI_SEND(spi, (arg >> 24) & 0xff);
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SPI_SEND(spi, (arg >> 16) & 0xff);
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SPI_SEND(spi, (arg >> 8) & 0xff);
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SPI_SEND(spi, arg & 0xff);
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/* Send CRC if needed. The SPI interface is initialized in non-protected
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* mode. However, the reset command (CMD0) and CMD8 are received by the
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@ -473,7 +454,8 @@ static uint32 mmcsd_sendcmd(FAR struct mmcsd_slot_s *slot,
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return (uint32)-1;
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}
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fvdbg("Return R1B=%04x\n", response);
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fvdbg("CMD%d[%08x] R1B=%02x\n",
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cmd->cmd & 0x3f, arg, response);
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}
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break;
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@ -481,7 +463,8 @@ static uint32 mmcsd_sendcmd(FAR struct mmcsd_slot_s *slot,
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case MMCSD_CMDRESP_R1:
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{
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fvdbg("Return R1=%02x\n", response);
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fvdbg("CMD%d[%08x] R1=%02x\n",
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cmd->cmd & 0x3f, arg, response);
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}
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break;
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@ -491,7 +474,9 @@ static uint32 mmcsd_sendcmd(FAR struct mmcsd_slot_s *slot,
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{
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result = ((uint32)(response & 0xff) << 8);
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result |= SPI_SEND(spi, 0xff) & 0xff;
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fvdbg("Return R2=%04x\n", result);
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fvdbg("CMD%d[%08x] R2=%04x\n",
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cmd->cmd & 0x3f, arg, result);
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}
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break;
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@ -499,22 +484,26 @@ static uint32 mmcsd_sendcmd(FAR struct mmcsd_slot_s *slot,
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case MMCSD_CMDRESP_R3:
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{
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slot->ocr = ((uint32)(response & 0xff) << 24);
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slot->ocr = ((uint32)(SPI_SEND(spi, 0xff) & 0xff) << 24);
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slot->ocr |= ((uint32)(SPI_SEND(spi, 0xff) & 0xff) << 16);
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slot->ocr |= ((uint32)(SPI_SEND(spi, 0xff) & 0xff) << 8);
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slot->ocr |= SPI_SEND(spi, 0xff) & 0xff;
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fvdbg("R1=%02x OCR=%08x\n", response, slot->ocr);
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fvdbg("CMD%d[%08x] R1=%02x OCR=%08x\n",
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cmd->cmd & 0x3f, arg, response, slot->ocr);
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}
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/* The R7 response is 5 bytes long */
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case MMCSD_CMDRESP_R7:
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default:
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{
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slot->r7 = ((uint32)(response & 0xff) << 24);
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slot->r7 = ((uint32)(SPI_SEND(spi, 0xff) & 0xff) << 24);
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slot->r7 |= ((uint32)(SPI_SEND(spi, 0xff) & 0xff) << 16);
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slot->r7 |= ((uint32)(SPI_SEND(spi, 0xff) & 0xff) << 8);
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slot->r7 |= SPI_SEND(spi, 0xff) & 0xff;
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fvdbg("R1=%02x R7=%08x\n", response, slot->r7);
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fvdbg("CMD%d[%08x] R1=%02x R7=%08x\n",
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cmd->cmd & 0x3f, arg, response, slot->r7);
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}
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break;
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}
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@ -869,7 +858,7 @@ static int mmcsd_recvblock(FAR struct mmcsd_slot_s *slot, ubyte *buffer, int nby
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return OK;
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}
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fdbg("Did not received data token (%02x)\n", token);
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fdbg("Did not receive data token (%02x)\n", token);
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return ERROR;
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}
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@ -1453,29 +1442,36 @@ static int mmcsd_mediainitialize(FAR struct mmcsd_slot_s *slot)
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* IDLE state.
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*/
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/* After power up at least 74 clock cycles are required prior to starting bus communication */
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fvdbg("Send CMD0\n");
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for (i = 0; i < 2; i++)
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{
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SPI_SELECT(spi, SPIDEV_MMCSD, TRUE);
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SPI_SEND(spi, 0xff);
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/* After power up at least 74 clock cycles are required prior to
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* starting bus communication
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*/
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for (j = 10; j; j--)
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{
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SPI_SEND(spi, 0xff);
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}
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/* Send CMD0 (GO_TO_IDLE) to put MMC/SD in IDLE/SPI mode.
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* Return from CMD0 is R1 which should now show IDLE STATE
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/* Send CMD0 (GO_TO_IDLE) with CS asserted to put MMC/SD in
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* IDLE/SPI mode. Return from CMD0 is R1 which should now
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* show IDLE STATE
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*/
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fvdbg("Send CMD0\n");
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SPI_SELECT(spi, SPIDEV_MMCSD, TRUE);
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result = mmcsd_sendcmd(slot, &g_cmd0, 0);
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if (result == MMCSD_SPIR1_IDLESTATE)
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{
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/* Break out of the loop with card selected */
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fvdbg("Card is in IDLE state\n");
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break;
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}
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/* De-select card and try again */
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SPI_SELECT(spi, SPIDEV_MMCSD, FALSE);
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}
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/* Verify that we exit the above loop with the card reporting IDLE state */
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@ -1493,26 +1489,25 @@ static int mmcsd_mediainitialize(FAR struct mmcsd_slot_s *slot)
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fvdbg("Send CMD8\n");
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result = mmcsd_sendcmd(slot, &g_cmd8, 0x1aa);
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if (result == MMCSD_SPIR1_IDLESTATE)
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{
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/* Should also check the operating voltage here */
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/* Verify the operating voltage and that the 0xaa was correctly echoed */
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if ((slot->r7 & MMCSD_SPIR7_ECHO_MASK) == 0xaa)
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if (((slot->r7 & MMCSD_SPIR7_VOLTAGE_MASK) == MMCSD_SPIR7_VOLTAGE_27) &&
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((slot->r7 & MMCSD_SPIR7_ECHO_MASK) == 0xaa))
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{
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/* Try CMD55/ACMD41 up to 100 times */
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/* Try CMD55/ACMD41 for up to 1 second or until the card exits
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* the IDLE state
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*/
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start = START_TIME;
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elapsed = 0;
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do
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{
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fvdbg("%d. Send CMD55\n", i);
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SPI_SEND(spi, 0xff);
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fvdbg("%d. Send CMD55/ACMD41\n", elapsed);
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result = mmcsd_sendcmd(slot, &g_cmd55, 0);
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if (result == MMCSD_SPIR1_IDLESTATE || result == MMCSD_SPIR1_OK)
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{
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fvdbg("%d. Send ACMD41\n", i);
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SPI_SEND(spi, 0xff);
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result = mmcsd_sendcmd(slot, &g_acmd41, 1 << 30);
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if (result == MMCSD_SPIR1_OK)
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{
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@ -1554,15 +1549,12 @@ static int mmcsd_mediainitialize(FAR struct mmcsd_slot_s *slot)
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{
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/* Both the MMC card and the SD card support CMD55 */
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fvdbg("Send CMD55\n");
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SPI_SEND(spi, 0xff);
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fvdbg("Send CMD55/ACMD41\n");
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result = mmcsd_sendcmd(slot, &g_cmd55, 0);
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if (result == MMCSD_SPIR1_IDLESTATE || result == MMCSD_SPIR1_OK)
|
||||
{
|
||||
/* But ACMD41 is supported only on SD */
|
||||
|
||||
fvdbg("Send ACMD41\n");
|
||||
SPI_SEND(spi, 0xff);
|
||||
result = mmcsd_sendcmd(slot, &g_acmd41, 0);
|
||||
if (result == MMCSD_SPIR1_IDLESTATE || result == MMCSD_SPIR1_OK)
|
||||
{
|
||||
|
|
@ -1579,11 +1571,10 @@ static int mmcsd_mediainitialize(FAR struct mmcsd_slot_s *slot)
|
|||
{
|
||||
if (IS_SD(slot->type))
|
||||
{
|
||||
fvdbg("%d. Send CMD55\n", i);
|
||||
fvdbg("%d. Send CMD55/ACMD41\n", elapsed);
|
||||
result = mmcsd_sendcmd(slot, &g_cmd55, 0);
|
||||
if (result == MMCSD_SPIR1_IDLESTATE || result == MMCSD_SPIR1_OK)
|
||||
{
|
||||
fvdbg("%d. Send ACMD41\n", i);
|
||||
SPI_SEND(spi, 0xff);
|
||||
result = mmcsd_sendcmd(slot, &g_acmd41, 0);
|
||||
if (result == MMCSD_SPIR1_OK)
|
||||
|
|
@ -1623,7 +1614,7 @@ static int mmcsd_mediainitialize(FAR struct mmcsd_slot_s *slot)
|
|||
return -EIO;
|
||||
}
|
||||
|
||||
/* Read CSD. CSD must always be valid */
|
||||
/* Read CSD. CSD must always be valid */
|
||||
|
||||
fvdbg("Get CSD\n");
|
||||
result = mmcsd_getcsd(slot, csd);
|
||||
|
|
|
|||
|
|
@ -126,8 +126,9 @@
|
|||
#define MMCSD_SPIR7_VERSION_MASK (0x0f << MMCSD_SPIR7_VERSION_SHIFT)
|
||||
#define MMCSD_SPIR7_VOLTAGE_SHIFT 8 /* Bits 8-11: Voltage accepted */
|
||||
#define MMCSD_SPIR7_VOLTAGE_MASK (0x0f << MMCSD_SPIR7_VOLTAGE_SHIFT)
|
||||
#define MMCSD_SPIR7_VOLTAGE_27 (0x01 << MMCSD_SPIR7_VOLTAGE_SHIFT) /* 2.7-3.6V */
|
||||
#define MMCSD_SPIR7_ECHO_SHIFT 0 /* Bits 0-7: Echoed check pattern */
|
||||
#define MMCSD_SPIR7_ECHO_MASK (0x0f << MMCSD_SPIR7_ECHO_SHIFT)
|
||||
#define MMCSD_SPIR7_ECHO_MASK (0xff << MMCSD_SPIR7_ECHO_SHIFT)
|
||||
|
||||
/* Data Response */
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue