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hw/sd: Introduce sd_cmd_handler type 

Add 2 command handler arrays in SDProto, for CMD and ACMD.
Have sd_normal_command() / sd_app_command() use these arrays:
if an command handler is registered, call it, otherwise fall
back to current code base.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Message-Id: <20210624142209.1193073-5-f4bug@amsat.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
master
Philippe Mathieu-Daudé 2021-06-24 13:00:08 +02:00 committed by Cédric Le Goater
parent 1b4a234278
commit 46859b6078
1 changed files with 13 additions and 0 deletions
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13
hw/sd/sd.c
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@ -87,8 +87,12 @@ enum SDCardStates {
sd_disconnect_state,
};
typedef sd_rsp_type_t (*sd_cmd_handler)(SDState *sd, SDRequest req);
typedef struct SDProto {
const char *name;
sd_cmd_handler cmd[SDMMC_CMD_MAX];
sd_cmd_handler acmd[SDMMC_CMD_MAX];
} SDProto;
struct SDState {
@ -1031,6 +1035,10 @@ static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req)
return sd_illegal;
}
if (sd_proto(sd)->cmd[req.cmd]) {
return sd_proto(sd)->cmd[req.cmd](sd, req);
}
switch (req.cmd) {
/* Basic commands (Class 0 and Class 1) */
case 0: /* CMD0: GO_IDLE_STATE */
@ -1575,6 +1583,11 @@ static sd_rsp_type_t sd_app_command(SDState *sd,
trace_sdcard_app_command(sd_proto(sd)->name, sd_acmd_name(req.cmd),
req.cmd, req.arg, sd_state_name(sd->state));
sd->card_status |= APP_CMD;
if (sd_proto(sd)->acmd[req.cmd]) {
return sd_proto(sd)->acmd[req.cmd](sd, req);
}
switch (req.cmd) {
case 6: /* ACMD6: SET_BUS_WIDTH */
if (sd->spi) {