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hw/sd/sdcard: Add sd_cmd_DE/SELECT_CARD handler (CMD7) 

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Message-Id: <20240628070216.92609-49-philmd@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2024-06-12 23:11:20 +02:00
parent 4064824fb7
commit 9193deb406
1 changed files with 47 additions and 38 deletions
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85
hw/sd/sd.c
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@ -237,7 +237,6 @@ static const char *sd_response_name(sd_rsp_type_t rsp)
static const char *sd_cmd_name(SDState *sd, uint8_t cmd)
{
static const char *cmd_abbrev[SDMMC_CMD_MAX] = {
[7] = "SELECT/DESELECT_CARD",
[8] = "SEND_IF_COND", [9] = "SEND_CSD",
[10] = "SEND_CID",
[12] = "STOP_TRANSMISSION", [13] = "SEND_STATUS",
@ -554,6 +553,11 @@ static uint16_t sd_req_get_rca(SDState *s, SDRequest req)
}
}
static bool sd_req_rca_same(SDState *s, SDRequest req)
{
return sd_req_get_rca(s, req) == s->rca;
}
/* Card Status register */
FIELD(CSR, AKE_SEQ_ERROR, 3, 1)
@ -1250,6 +1254,47 @@ static sd_rsp_type_t sd_cmd_SWITCH_FUNCTION(SDState *sd, SDRequest req)
return sd_cmd_to_sendingdata(sd, req, 0, NULL, 64);
}
/* CMD7 */
static sd_rsp_type_t sd_cmd_DE_SELECT_CARD(SDState *sd, SDRequest req)
{
bool same_rca = sd_req_rca_same(sd, req);
switch (sd->state) {
case sd_standby_state:
if (!same_rca) {
return sd_r0;
}
sd->state = sd_transfer_state;
return sd_r1b;
case sd_transfer_state:
case sd_sendingdata_state:
if (same_rca) {
break;
}
sd->state = sd_standby_state;
return sd_r1b;
case sd_disconnect_state:
if (!same_rca) {
return sd_r0;
}
sd->state = sd_programming_state;
return sd_r1b;
case sd_programming_state:
if (same_rca) {
break;
}
sd->state = sd_disconnect_state;
return sd_r1b;
default:
break;
}
return sd_invalid_state_for_cmd(sd, req);
}
/* CMD19 */
static sd_rsp_type_t sd_cmd_SEND_TUNING_BLOCK(SDState *sd, SDRequest req)
{
@ -1316,43 +1361,6 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req)
switch (req.cmd) {
/* Basic commands (Class 0 and Class 1) */
case 7: /* CMD7: SELECT/DESELECT_CARD */
rca = sd_req_get_rca(sd, req);
switch (sd->state) {
case sd_standby_state:
if (sd->rca != rca)
return sd_r0;
sd->state = sd_transfer_state;
return sd_r1b;
case sd_transfer_state:
case sd_sendingdata_state:
if (sd->rca == rca)
break;
sd->state = sd_standby_state;
return sd_r1b;
case sd_disconnect_state:
if (sd->rca != rca)
return sd_r0;
sd->state = sd_programming_state;
return sd_r1b;
case sd_programming_state:
if (sd->rca == rca)
break;
sd->state = sd_disconnect_state;
return sd_r1b;
default:
break;
}
break;
case 8: /* CMD8: SEND_IF_COND */
if (sd->spec_version < SD_PHY_SPECv2_00_VERS) {
break;
@ -2295,6 +2303,7 @@ static const SDProto sd_proto_sd = {
[4] = {0, sd_bc, "SEND_DSR", sd_cmd_unimplemented},
[5] = {9, sd_bc, "IO_SEND_OP_COND", sd_cmd_optional},
[6] = {10, sd_adtc, "SWITCH_FUNCTION", sd_cmd_SWITCH_FUNCTION},
[7] = {0, sd_ac, "(DE)SELECT_CARD", sd_cmd_DE_SELECT_CARD},
[11] = {0, sd_ac, "VOLTAGE_SWITCH", sd_cmd_optional},
[19] = {2, sd_adtc, "SEND_TUNING_BLOCK", sd_cmd_SEND_TUNING_BLOCK},
[20] = {2, sd_ac, "SPEED_CLASS_CONTROL", sd_cmd_optional},