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sdcard: Use the ldst API

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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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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 |