Re: [PATCH v42 40/98] hw/sd/sdcard: Store command type in SDProto

[Cédric Le Goater]

On 6/28/24 9:01 AM, Philippe Mathieu-Daudé wrote:

Store the command type altogether with the command handler and name.

Signed-off-by: Philippe Mathieu-Daudé <phi...@linaro.org>

Reviewed-by: Cédric Le Goater <c...@redhat.com>

Thanks,

C.

---
  include/hw/sd/sd.h |  5 +++--
  hw/sd/sd.c         | 44 ++++++++++++++++++++------------------------
  2 files changed, 23 insertions(+), 26 deletions(-)

diff --git a/include/hw/sd/sd.h b/include/hw/sd/sd.h
index 2c8748fb9b..29c76935a0 100644
--- a/include/hw/sd/sd.h
+++ b/include/hw/sd/sd.h
@@ -76,8 +76,9 @@ typedef enum  {
  } sd_uhs_mode_t;

typedef enum {

-    sd_none = -1,
-    sd_bc = 0, /* broadcast -- no response */
+    sd_none = 0,
+    sd_spi,
+    sd_bc,     /* broadcast -- no response */
      sd_bcr,    /* broadcast with response */
      sd_ac,     /* addressed -- no data transfer */
      sd_adtc,   /* addressed with data transfer */
diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 97fb3785ee..c4cc48926d 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -95,6 +95,7 @@ typedef sd_rsp_type_t (*sd_cmd_handler)(SDState *sd, 
SDRequest req);
  typedef struct SDProto {
      const char *name;
      struct {
+        const sd_cmd_type_t type;
          const char *name;
          sd_cmd_handler handler;
      } cmd[SDMMC_CMD_MAX], acmd[SDMMC_CMD_MAX];
@@ -351,20 +352,6 @@ static void sd_set_mode(SDState *sd)
      }
  }

-static const sd_cmd_type_t sd_cmd_type[SDMMC_CMD_MAX] = {

-    sd_bc,   sd_none, sd_bcr,  sd_bcr,  sd_none, sd_none, sd_none, sd_ac,
-    sd_bcr,  sd_ac,   sd_ac,   sd_adtc, sd_ac,   sd_ac,   sd_none, sd_ac,
-    /* 16 */
-    sd_ac,   sd_adtc, sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none,
-    sd_adtc, sd_adtc, sd_adtc, sd_adtc, sd_ac,   sd_ac,   sd_adtc, sd_none,
-    /* 32 */
-    sd_ac,   sd_ac,   sd_none, sd_none, sd_none, sd_none, sd_ac,   sd_none,
-    sd_none, sd_none, sd_bc,   sd_none, sd_none, sd_none, sd_none, sd_none,
-    /* 48 */
-    sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_ac,
-    sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none,
-};
-
  static const int sd_cmd_class[SDMMC_CMD_MAX] = {
      0,  0,  0,  0,  0,  9, 10,  0,  0,  0,  0,  1,  0,  0,  0,  0,
      2,  2,  2,  2,  3,  3,  3,  3,  4,  4,  4,  4,  6,  6,  6,  6,
@@ -571,10 +558,19 @@ static void sd_set_rca(SDState *sd, uint16_t value)

static uint16_t sd_req_get_rca(SDState *s, SDRequest req)

  {
-    if (sd_cmd_type[req.cmd] == sd_ac || sd_cmd_type[req.cmd] == sd_adtc) {
+    switch (s->proto->cmd[req.cmd].type) {
+    case sd_none:
+        /* Called from legacy code not ported to SDProto array */
+        assert(!s->proto->cmd[req.cmd].handler);
+        /* fall-through */
+    case sd_ac:
+    case sd_adtc:
          return req.arg >> 16;
+    case sd_spi:
+        g_assert_not_reached();
+    default:
+        return 0;
      }
-    return 0;
  }

/* Card Status register */

@@ -2277,22 +2273,22 @@ void sd_enable(SDState *sd, bool enable)
  static const SDProto sd_proto_spi = {
      .name = "SPI",
      .cmd = {
-        [0]  = {            "GO_IDLE_STATE", sd_cmd_GO_IDLE_STATE},
-        [1]  = {            "SEND_OP_COND", spi_cmd_SEND_OP_COND},
+        [0]  = {    sd_spi, "GO_IDLE_STATE", sd_cmd_GO_IDLE_STATE},
+        [1]  = {    sd_spi, "SEND_OP_COND", spi_cmd_SEND_OP_COND},
      },
      .acmd = {
-        [41] = {            "SEND_OP_COND", spi_cmd_SEND_OP_COND},
+        [41] = {    sd_spi, "SEND_OP_COND", spi_cmd_SEND_OP_COND},
      },
  };

static const SDProto sd_proto_sd = {

      .name = "SD",
      .cmd = {
-        [0]  = {             "GO_IDLE_STATE", sd_cmd_GO_IDLE_STATE},
-        [2]  = {             "ALL_SEND_CID", sd_cmd_ALL_SEND_CID},
-        [3]  = {             "SEND_RELATIVE_ADDR", sd_cmd_SEND_RELATIVE_ADDR},
-        [19] = {             "SEND_TUNING_BLOCK", sd_cmd_SEND_TUNING_BLOCK},
-        [23] = {             "SET_BLOCK_COUNT", sd_cmd_SET_BLOCK_COUNT},
+        [0]  = {    sd_bc,   "GO_IDLE_STATE", sd_cmd_GO_IDLE_STATE},
+        [2]  = {    sd_bcr,  "ALL_SEND_CID", sd_cmd_ALL_SEND_CID},
+        [3]  = {    sd_bcr,  "SEND_RELATIVE_ADDR", sd_cmd_SEND_RELATIVE_ADDR},
+        [19] = {    sd_adtc, "SEND_TUNING_BLOCK", sd_cmd_SEND_TUNING_BLOCK},
+        [23] = {    sd_ac,   "SET_BLOCK_COUNT", sd_cmd_SET_BLOCK_COUNT},
      },
  };