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sdcard: Use the ldst API 

The load/store API will ease further code movement.

Per the Physical Layer Simplified Spec. "3.6 Bus Protocol":

  "In the CMD line the Most Significant Bit (MSB) is transmitted
   first, the Least Significant Bit (LSB) is the last."

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2018-06-29 15:11:20 +01:00 committed by Peter Maydell
parent 13606b9951
commit b3141c0625
6 changed files with 19 additions and 35 deletions
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13
hw/sd/bcm2835_sdhost.c
View File

@ -118,8 +118,6 @@ static void bcm2835_sdhost_send_command(BCM2835SDHostState *s)
goto error;
}
if (!(s->cmd & SDCMD_NO_RESPONSE)) {
#define RWORD(n) (((uint32_t)rsp[n] << 24) | (rsp[n + 1] << 16) \
| (rsp[n + 2] << 8) | rsp[n + 3])
if (rlen == 0 || (rlen == 4 && (s->cmd & SDCMD_LONG_RESPONSE))) {
goto error;
}
@ -127,15 +125,14 @@ static void bcm2835_sdhost_send_command(BCM2835SDHostState *s)
goto error;
}
if (rlen == 4) {
s->rsp[0] = RWORD(0);
s->rsp[0] = ldl_be_p(&rsp[0]);
s->rsp[1] = s->rsp[2] = s->rsp[3] = 0;
} else {
s->rsp[0] = RWORD(12);
s->rsp[1] = RWORD(8);
s->rsp[2] = RWORD(4);
s->rsp[3] = RWORD(0);
s->rsp[0] = ldl_be_p(&rsp[12]);
s->rsp[1] = ldl_be_p(&rsp[8]);
s->rsp[2] = ldl_be_p(&rsp[4]);
s->rsp[3] = ldl_be_p(&rsp[0]);
}
#undef RWORD
}
/* We never really delay commands, so if this was a 'busywait' command
* then we've completed it now and can raise the interrupt.

3
hw/sd/milkymist-memcard.c
View File

@ -100,8 +100,7 @@ static void memcard_sd_command(MilkymistMemcardState *s)
SDRequest req;
req.cmd = s->command[0] & 0x3f;
req.arg = (s->command[1] << 24) | (s->command[2] << 16)
| (s->command[3] << 8) | s->command[4];
req.arg = ldl_be_p(s->command + 1);
req.crc = s->command[5];
s->response[0] = req.cmd;

6
hw/sd/omap_mmc.c
View File

@ -163,8 +163,7 @@ static void omap_mmc_command(struct omap_mmc_s *host, int cmd, int dir,
CID_CSD_OVERWRITE;
if (host->sdio & (1 << 13))
mask |= AKE_SEQ_ERROR;
rspstatus = (response[0] << 24) | (response[1] << 16) |
(response[2] << 8) | (response[3] << 0);
rspstatus = ldl_be_p(response);
break;
case sd_r2:
@ -182,8 +181,7 @@ static void omap_mmc_command(struct omap_mmc_s *host, int cmd, int dir,
}
rsplen = 4;
rspstatus = (response[0] << 24) | (response[1] << 16) |
(response[2] << 8) | (response[3] << 0);
rspstatus = ldl_be_p(response);
if (rspstatus & 0x80000000)
host->status &= 0xe000;
else

11
hw/sd/pl181.c
View File

@ -182,23 +182,20 @@ static void pl181_send_command(PL181State *s)
if (rlen < 0)
goto error;
if (s->cmd & PL181_CMD_RESPONSE) {
#define RWORD(n) (((uint32_t)response[n] << 24) | (response[n + 1] << 16) \
| (response[n + 2] << 8) | response[n + 3])
if (rlen == 0 || (rlen == 4 && (s->cmd & PL181_CMD_LONGRESP)))
goto error;
if (rlen != 4 && rlen != 16)
goto error;
s->response[0] = RWORD(0);
s->response[0] = ldl_be_p(&response[0]);
if (rlen == 4) {
s->response[1] = s->response[2] = s->response[3] = 0;
} else {
s->response[1] = RWORD(4);
s->response[2] = RWORD(8);
s->response[3] = RWORD(12) & ~1;
s->response[1] = ldl_be_p(&response[4]);
s->response[2] = ldl_be_p(&response[8]);
s->response[3] = ldl_be_p(&response[12]) & ~1;
}
DPRINTF("Response received\n");
s->status |= PL181_STATUS_CMDRESPEND;
#undef RWORD
} else {
DPRINTF("Command sent\n");
s->status |= PL181_STATUS_CMDSENT;

15
hw/sd/sdhci.c
View File

@ -342,17 +342,13 @@ static void sdhci_send_command(SDHCIState *s)
if (s->cmdreg & SDHC_CMD_RESPONSE) {
if (rlen == 4) {
s->rspreg[0] = (response[0] << 24) | (response[1] << 16) |
(response[2] << 8) | response[3];
s->rspreg[0] = ldl_be_p(response);
s->rspreg[1] = s->rspreg[2] = s->rspreg[3] = 0;
trace_sdhci_response4(s->rspreg[0]);
} else if (rlen == 16) {
s->rspreg[0] = (response[11] << 24) | (response[12] << 16) |
(response[13] << 8) | response[14];
s->rspreg[1] = (response[7] << 24) | (response[8] << 16) |
(response[9] << 8) | response[10];
s->rspreg[2] = (response[3] << 24) | (response[4] << 16) |
(response[5] << 8) | response[6];
s->rspreg[0] = ldl_be_p(&response[11]);
s->rspreg[1] = ldl_be_p(&response[7]);
s->rspreg[2] = ldl_be_p(&response[3]);
s->rspreg[3] = (response[0] << 16) | (response[1] << 8) |
response[2];
trace_sdhci_response16(s->rspreg[3], s->rspreg[2],
@ -396,8 +392,7 @@ static void sdhci_end_transfer(SDHCIState *s)
trace_sdhci_end_transfer(request.cmd, request.arg);
sdbus_do_command(&s->sdbus, &request, response);
/* Auto CMD12 response goes to the upper Response register */
s->rspreg[3] = (response[0] << 24) | (response[1] << 16) |
(response[2] << 8) | response[3];
s->rspreg[3] = ldl_be_p(response);
}
s->prnsts &= ~(SDHC_DOING_READ | SDHC_DOING_WRITE |

6
hw/sd/ssi-sd.c
View File

@ -96,8 +96,7 @@ static uint32_t ssi_sd_transfer(SSISlave *dev, uint32_t val)
uint8_t longresp[16];
/* FIXME: Check CRC. */
request.cmd = s->cmd;
request.arg = (s->cmdarg[0] << 24) | (s->cmdarg[1] << 16)
| (s->cmdarg[2] << 8) | s->cmdarg[3];
request.arg = ldl_be_p(s->cmdarg);
DPRINTF("CMD%d arg 0x%08x\n", s->cmd, request.arg);
s->arglen = sdbus_do_command(&s->sdbus, &request, longresp);
if (s->arglen <= 0) {
@ -122,8 +121,7 @@ static uint32_t ssi_sd_transfer(SSISlave *dev, uint32_t val)
/* CMD13 returns a 2-byte statuse work. Other commands
only return the first byte. */
s->arglen = (s->cmd == 13) ? 2 : 1;
cardstatus = (longresp[0] << 24) | (longresp[1] << 16)
| (longresp[2] << 8) | longresp[3];
cardstatus = ldl_be_p(longresp);
status = 0;
if (((cardstatus >> 9) & 0xf) < 4)
status |= SSI_SDR_IDLE;