[03/21] hw/sd/sdcard: Add sd_cmd_SEND_IF_COND handler (CMD8)

Commit Message

Philippe Mathieu-Daudé June 27, 2024, 4:43 p.m. UTC

Signed-off-by: Philippe Mathieu-Daudé <[e-mail]>
---
 hw/sd/sd.c | 43 ++++++++++++++++++++++++-------------------
 1 file changed, 24 insertions(+), 19 deletions(-)

Patch

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 6ad98db981..e2f7e99ea2 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -240,7 +240,7 @@  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] = {
-         [8]    = "SEND_IF_COND",            [9]    = "SEND_CSD",
+                                             [9]    = "SEND_CSD",
         [10]    = "SEND_CID",
         [12]    = "STOP_TRANSMISSION",      [13]    = "SEND_STATUS",
                                             [15]    = "GO_INACTIVE_STATE",
@@ -1303,6 +1303,27 @@  static sd_rsp_type_t sd_cmd_DE_SELECT_CARD(SDState *sd, SDRequest req)
     return sd_invalid_state_for_cmd(sd, req);
 }
 
+/* CMD8 */
+static sd_rsp_type_t sd_cmd_SEND_IF_COND(SDState *sd, SDRequest req)
+{
+    if (sd->spec_version < SD_PHY_SPECv2_00_VERS) {
+        return sd_cmd_illegal(sd, req);
+    }
+    if (sd->state != sd_idle_state) {
+        return sd_invalid_state_for_cmd(sd, req);
+    }
+    sd->vhs = 0;
+
+    /* No response if not exactly one VHS bit is set.  */
+    if (!(req.arg >> 8) || (req.arg >> (ctz32(req.arg & ~0xff) + 1))) {
+        return sd_is_spi(sd) ? sd_r7 : sd_r0;
+    }
+
+    /* Accept.  */
+    sd->vhs = req.arg;
+    return sd_r7;
+}
+
 /* CMD19 */
 static sd_rsp_type_t sd_cmd_SEND_TUNING_BLOCK(SDState *sd, SDRequest req)
 {
@@ -1369,24 +1390,6 @@  static sd_rsp_type_t sd_normal_command(SDState *sd, SDRequest req)
 
     switch (req.cmd) {
     /* Basic commands (Class 0 and Class 1) */
-    case 8:  /* CMD8:   SEND_IF_COND */
-        if (sd->spec_version < SD_PHY_SPECv2_00_VERS) {
-            break;
-        }
-        if (sd->state != sd_idle_state) {
-            break;
-        }
-        sd->vhs = 0;
-
-        /* No response if not exactly one VHS bit is set.  */
-        if (!(req.arg >> 8) || (req.arg >> (ctz32(req.arg & ~0xff) + 1))) {
-            return sd_is_spi(sd) ? sd_r7 : sd_r0;
-        }
-
-        /* Accept.  */
-        sd->vhs = req.arg;
-        return sd_r7;
-
     case 9:  /* CMD9:   SEND_CSD */
         rca = sd_req_get_rca(sd, req);
         switch (sd->state) {
@@ -2278,6 +2281,7 @@  static const SDProto sd_proto_spi = {
         [1]  = {0,  sd_spi, "SEND_OP_COND", spi_cmd_SEND_OP_COND},
         [5]  = {9,  sd_spi, "IO_SEND_OP_COND", sd_cmd_optional},
         [6]  = {10, sd_spi, "SWITCH_FUNCTION", sd_cmd_SWITCH_FUNCTION},
+        [8]  = {0,  sd_spi, "SEND_IF_COND", sd_cmd_SEND_IF_COND},
         [34] = {10, sd_spi, "READ_SEC_CMD", sd_cmd_optional},
         [35] = {10, sd_spi, "WRITE_SEC_CMD", sd_cmd_optional},
         [36] = {10, sd_spi, "SEND_PSI", sd_cmd_optional},
@@ -2302,6 +2306,7 @@  static const SDProto sd_proto_sd = {
         [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},
+        [8]  = {0,  sd_bcr,  "SEND_IF_COND", sd_cmd_SEND_IF_COND},
         [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},