[v2,06/11] hw/sd/sdcard: Convert SEND_TUNING_BLOCK to generic_read_byte (CMD19)

Commit Message

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

Signed-off-by: Philippe Mathieu-Daudé <[e-mail]>
---
 hw/sd/sd.c | 48 +++++++++++++++++++-----------------------------
 1 file changed, 19 insertions(+), 29 deletions(-)

Patch

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 605269163d..eece33194a 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -568,6 +568,21 @@  static void sd_set_sdstatus(SDState *sd)
     memset(sd->sd_status, 0, 64);
 }
 
+static const uint8_t sd_tuning_block_pattern4[64] = {
+    /*
+     * See: Physical Layer Simplified Specification Version 3.01,
+     * Table 4-2.
+     */
+    0xff, 0x0f, 0xff, 0x00,     0x0f, 0xfc, 0xc3, 0xcc,
+    0xc3, 0x3c, 0xcc, 0xff,     0xfe, 0xff, 0xfe, 0xef,
+    0xff, 0xdf, 0xff, 0xdd,     0xff, 0xfb, 0xff, 0xfb,
+    0xbf, 0xff, 0x7f, 0xff,     0x77, 0xf7, 0xbd, 0xef,
+    0xff, 0xf0, 0xff, 0xf0,     0x0f, 0xfc, 0xcc, 0x3c,
+    0xcc, 0x33, 0xcc, 0xcf,     0xff, 0xef, 0xff, 0xee,
+    0xff, 0xfd, 0xff, 0xfd,     0xdf, 0xff, 0xbf, 0xff,
+    0xbb, 0xff, 0xf7, 0xff,     0xf7, 0x7f, 0x7b, 0xde
+};
+
 static int sd_req_crc_validate(SDRequest *req)
 {
     uint8_t buffer[5];
@@ -1161,14 +1176,9 @@  static sd_rsp_type_t sd_cmd_SEND_TUNING_BLOCK(SDState *sd, SDRequest req)
         return sd_cmd_illegal(sd, req);
     }
 
-    if (sd->state != sd_transfer_state) {
-        return sd_invalid_state_for_cmd(sd, req);
-    }
-
-    sd->state = sd_sendingdata_state;
-    sd->data_offset = 0;
-
-    return sd_r1;
+    return sd_cmd_to_sendingdata(sd, req, 0,
+                                 sd_tuning_block_pattern4,
+                                 sizeof(sd_tuning_block_pattern4));
 }
 
 /* CMD23 */
@@ -2100,20 +2110,6 @@  void sd_write_byte(SDState *sd, uint8_t value)
     }
 }
 
-#define SD_TUNING_BLOCK_SIZE    64
-
-static const uint8_t sd_tuning_block_pattern[SD_TUNING_BLOCK_SIZE] = {
-    /* See: Physical Layer Simplified Specification Version 3.01, Table 4-2 */
-    0xff, 0x0f, 0xff, 0x00,         0x0f, 0xfc, 0xc3, 0xcc,
-    0xc3, 0x3c, 0xcc, 0xff,         0xfe, 0xff, 0xfe, 0xef,
-    0xff, 0xdf, 0xff, 0xdd,         0xff, 0xfb, 0xff, 0xfb,
-    0xbf, 0xff, 0x7f, 0xff,         0x77, 0xf7, 0xbd, 0xef,
-    0xff, 0xf0, 0xff, 0xf0,         0x0f, 0xfc, 0xcc, 0x3c,
-    0xcc, 0x33, 0xcc, 0xcf,         0xff, 0xef, 0xff, 0xee,
-    0xff, 0xfd, 0xff, 0xfd,         0xdf, 0xff, 0xbf, 0xff,
-    0xbb, 0xff, 0xf7, 0xff,         0xf7, 0x7f, 0x7b, 0xde,
-};
-
 uint8_t sd_read_byte(SDState *sd)
 {
     /* TODO: Append CRCs */
@@ -2142,6 +2138,7 @@  uint8_t sd_read_byte(SDState *sd)
     case 9:  /* CMD9:   SEND_CSD */
     case 10: /* CMD10:  SEND_CID */
     case 17: /* CMD17:  READ_SINGLE_BLOCK */
+    case 19: /* CMD19:  SEND_TUNING_BLOCK (SD) */
         sd_generic_read_byte(sd, &ret);
         break;
 
@@ -2176,13 +2173,6 @@  uint8_t sd_read_byte(SDState *sd)
         }
         break;
 
-    case 19:    /* CMD19:  SEND_TUNING_BLOCK (SD) */
-        if (sd->data_offset >= SD_TUNING_BLOCK_SIZE - 1) {
-            sd->state = sd_transfer_state;
-        }
-        ret = sd_tuning_block_pattern[sd->data_offset++];
-        break;
-
     case 22:  /* ACMD22: SEND_NUM_WR_BLOCKS */
         ret = sd->data[sd->data_offset ++];