[Qemu-devel] [PATCH 4/8] sdhci: fix CAPAB/MAXCURR registers, both are 64bit and read-only

["Philippe Mathieu-Daudé" <f4bug@amsat.org>]

running qtests:

  $ make check-qtest-arm
    GTESTER check-qtest-arm
  SDHC rd_4b @0x44 not implemented
  SDHC wr_4b @0x40 <- 0x89abcdef not implemented
  SDHC wr_4b @0x44 <- 0x01234567 not implemented

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
---
 include/hw/sd/sdhci.h |  4 ++--
 hw/sd/sdhci.c         | 25 ++++++++++++++++++++-----
 2 files changed, 22 insertions(+), 7 deletions(-)

diff --git a/include/hw/sd/sdhci.h b/include/hw/sd/sdhci.h
index f8e91ce903..d5093fe3fd 100644
--- a/include/hw/sd/sdhci.h
+++ b/include/hw/sd/sdhci.h
@@ -75,8 +75,8 @@ typedef struct SDHCIState {
     uint16_t acmd12errsts; /* Auto CMD12 error status register */
     uint64_t admasysaddr;  /* ADMA System Address Register */
 
-    uint32_t capareg;      /* Capabilities Register */
-    uint32_t maxcurr;      /* Maximum Current Capabilities Register */
+    uint64_t capareg;      /* Capabilities Register */
+    uint64_t maxcurr;      /* Maximum Current Capabilities Register */
     uint8_t  *fifo_buffer; /* SD host i/o FIFO buffer */
     uint32_t buf_maxsz;
     uint16_t data_count;   /* current element in FIFO buffer */
diff --git a/hw/sd/sdhci.c b/hw/sd/sdhci.c
index d6145342fb..4d269c7ac4 100644
--- a/hw/sd/sdhci.c
+++ b/hw/sd/sdhci.c
@@ -99,7 +99,7 @@
 
 static void sdhci_init_capareg(SDHCIState *s, Error **errp)
 {
-    if (s->capareg == UINT32_MAX) {
+    if (s->capareg == UINT64_MAX) {
         s->capareg = SDHC_CAPAB_REG_DEFAULT;
     }
 }
@@ -893,10 +893,16 @@ static uint64_t sdhci_read(void *opaque, hwaddr offset, unsigned size)
         ret = s->acmd12errsts;
         break;
     case SDHC_CAPAREG:
-        ret = s->capareg;
+        ret = (uint32_t)s->capareg;
+        break;
+    case SDHC_CAPAREG + 4:
+        ret = (uint32_t)(s->capareg >> 32);
         break;
     case SDHC_MAXCURR:
-        ret = s->maxcurr;
+        ret = (uint32_t)s->maxcurr;
+        break;
+    case SDHC_MAXCURR + 4:
+        ret = (uint32_t)(s->maxcurr >> 32);
         break;
     case SDHC_ADMAERR:
         ret =  s->admaerr;
@@ -1117,6 +1123,15 @@ sdhci_write(void *opaque, hwaddr offset, uint64_t val, unsigned size)
         }
         sdhci_update_irq(s);
         break;
+
+    case SDHC_CAPAREG:
+    case SDHC_CAPAREG + 4:
+    case SDHC_MAXCURR:
+    case SDHC_MAXCURR + 4:
+        qemu_log_mask(LOG_GUEST_ERROR, "SDHC wr_%ub @0x%02" HWADDR_PRIx
+                      " <- 0x%08x read-only\n", size, offset, value >> shift);
+        break;
+
     default:
         qemu_log_mask(LOG_UNIMP, "SDHC wr_%ub @0x%02" HWADDR_PRIx " <- 0x%08x "
                       "not implemented\n", size, offset, value >> shift);
@@ -1266,8 +1281,8 @@ const VMStateDescription sdhci_vmstate = {
 static Property sdhci_properties[] = {
     DEFINE_PROP_UINT8("sd-spec-version", SDHCIState,
                       capabilities.spec_version, SD_HOST_SPECv2_VERS),
-    DEFINE_PROP_UINT32("capareg", SDHCIState, capareg, UINT32_MAX),
-    DEFINE_PROP_UINT32("maxcurr", SDHCIState, maxcurr, 0),
+    DEFINE_PROP_UINT64("capareg", SDHCIState, capareg, UINT64_MAX),
+    DEFINE_PROP_UINT64("maxcurr", SDHCIState, maxcurr, 0),
     DEFINE_PROP_BOOL("pending-insert-quirk", SDHCIState, pending_insert_quirk,
                      false),
     DEFINE_PROP_LINK("dma-memory", SDHCIState, dma_mr,
-- 
2.15.1