hw/sd/omap_mmc: Don't use sd_cmd_type_t

In commit 1ab08790bb75e4 we did some refactoring of the SD card
implementation, which included a rearrangement of the sd_cmd_type_t
enum values.  Unfortunately we didn't notice that this enum is not
used solely inside the SD card model itself, but is also used by the
OMAP MMC controller device.  In the OMAP MMC controller, it is used
to implement the handling of the Type field of the MMC_CMD register,
so changing the enum values so that they no longer lined up with the
bit definitions for that register field broke the controller model.
The effect is that Linux fails to boot from an SD card on the "sx1"
machine.

Give omap-mmc its own enum which we can document as needing to match
the encoding used in this device's register, so it isn't sharing
sd_cmd_type_t with the SD card model any more.  We can then move
sd_cmd_type_t's definition out of sd.h and into sd.c, which is the
only place that uses it.

Cc: qemu-stable@nongnu.org
Fixes: 1ab08790bb75 ("hw/sd/sdcard: Store command type in SDProto")
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20241017162755.710698-1-peter.maydell@linaro.org
(cherry picked from commit 77dd098a5e790e3ede0dea5ddd5f690086fe608c)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

diff --git a/hw/sd/omap_mmc.c b/hw/sd/omap_mmc.c
index edd3cf2a1eb8350b93438897c53ef2135ed01818..b20edac2cefbe4e81b99875c0ec657d0cab90e7d 100644 (file)
--- a/hw/sd/omap_mmc.c
+++ b/hw/sd/omap_mmc.c
@@ -103,6 +103,7 @@ static void omap_mmc_fifolevel_update(struct omap_mmc_s *host)
     }
 }
 
+/* These must match the encoding of the MMC_CMD Response field */
 typedef enum {
     sd_nore = 0,       /* no response */
     sd_r1,             /* normal response command */
@@ -112,8 +113,17 @@ typedef enum {
     sd_r1b = -1,
 } sd_rsp_type_t;
 
+/* These must match the encoding of the MMC_CMD Type field */
+typedef enum {
+    SD_TYPE_BC = 0,     /* broadcast -- no response */
+    SD_TYPE_BCR = 1,    /* broadcast with response */
+    SD_TYPE_AC = 2,     /* addressed -- no data transfer */
+    SD_TYPE_ADTC = 3,   /* addressed with data transfer */
+} MMCCmdType;
+
 static void omap_mmc_command(struct omap_mmc_s *host, int cmd, int dir,
-                sd_cmd_type_t type, int busy, sd_rsp_type_t resptype, int init)
+                             MMCCmdType type, int busy,
+                             sd_rsp_type_t resptype, int init)
 {
     uint32_t rspstatus, mask;
     int rsplen, timeout;
@@ -128,7 +138,7 @@ static void omap_mmc_command(struct omap_mmc_s *host, int cmd, int dir,
     if (resptype == sd_r1 && busy)
         resptype = sd_r1b;
 
-    if (type == sd_adtc) {
+    if (type == SD_TYPE_ADTC) {
         host->fifo_start = 0;
         host->fifo_len = 0;
         host->transfer = 1;
@@ -433,10 +443,10 @@ static void omap_mmc_write(void *opaque, hwaddr offset,
         for (i = 0; i < 8; i ++)
             s->rsp[i] = 0x0000;
         omap_mmc_command(s, value & 63, (value >> 15) & 1,
-                (sd_cmd_type_t) ((value >> 12) & 3),
-                (value >> 11) & 1,
-                (sd_rsp_type_t) ((value >> 8) & 7),
-                (value >> 7) & 1);
+                         (MMCCmdType)((value >> 12) & 3),
+                         (value >> 11) & 1,
+                         (sd_rsp_type_t) ((value >> 8) & 7),
+                         (value >> 7) & 1);
         omap_mmc_update(s);
         break;
 

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 26d6eebe898d4e0e65341ccc0c765e2c773f0176..e96181385f632e2545e7926e119ba4703522a2e5 100644 (file)
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -71,6 +71,14 @@ typedef enum {
     sd_illegal = -2,
 } sd_rsp_type_t;
 
+typedef enum {
+    sd_spi,
+    sd_bc,     /* broadcast -- no response */
+    sd_bcr,    /* broadcast with response */
+    sd_ac,     /* addressed -- no data transfer */
+    sd_adtc,   /* addressed with data transfer */
+} sd_cmd_type_t;
+
 enum SDCardModes {
     sd_inactive,
     sd_card_identification_mode,

diff --git a/include/hw/sd/sd.h b/include/hw/sd/sd.h
index d35a839f5ef95696edfacfbd2c47921662ccfc1c..f2458f37b3c266837c25d9c08c952aacded47f23 100644 (file)
--- a/include/hw/sd/sd.h
+++ b/include/hw/sd/sd.h
@@ -75,14 +75,6 @@ typedef enum  {
     UHS_III             = 3,    /* currently not supported */
 } sd_uhs_mode_t;
 
-typedef enum {
-    sd_spi,
-    sd_bc,     /* broadcast -- no response */
-    sd_bcr,    /* broadcast with response */
-    sd_ac,     /* addressed -- no data transfer */
-    sd_adtc,   /* addressed with data transfer */
-} sd_cmd_type_t;
-
 typedef struct {
     uint8_t cmd;
     uint32_t arg;