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From: "Philippe Mathieu-Daudé" <f4bug@amsat.org>
To: qemu-devel@nongnu.org
Cc: "Alexander Bulekov" <alxndr@bu.edu>,
	"Philippe Mathieu-Daudé" <f4bug@amsat.org>
Subject: [PULL 09/13] hw/sd/sdcard: Introduce the INVALID_ADDRESS definition
Date: Wed, 21 Oct 2020 19:34:46 +0200	[thread overview]
Message-ID: <20201021173450.2616910-10-f4bug@amsat.org> (raw)
In-Reply-To: <20201021173450.2616910-1-f4bug@amsat.org>

'0' is used as a value to indicate an invalid (or unset)
address. Use a definition instead of a magic value.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Alexander Bulekov <alxndr@bu.edu>
Message-Id: <20201015063824.212980-3-f4bug@amsat.org>
---
 hw/sd/sd.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/hw/sd/sd.c b/hw/sd/sd.c
index 2606b969e34..30ae435d669 100644
--- a/hw/sd/sd.c
+++ b/hw/sd/sd.c
@@ -53,6 +53,8 @@
 
 #define SDSC_MAX_CAPACITY   (2 * GiB)
 
+#define INVALID_ADDRESS     0
+
 typedef enum {
     sd_r0 = 0,    /* no response */
     sd_r1,        /* normal response command */
@@ -575,8 +577,8 @@ static void sd_reset(DeviceState *dev)
     sd->wpgrps_size = sect;
     sd->wp_groups = bitmap_new(sd->wpgrps_size);
     memset(sd->function_group, 0, sizeof(sd->function_group));
-    sd->erase_start = 0;
-    sd->erase_end = 0;
+    sd->erase_start = INVALID_ADDRESS;
+    sd->erase_end = INVALID_ADDRESS;
     sd->size = size;
     sd->blk_len = 0x200;
     sd->pwd_len = 0;
@@ -750,7 +752,8 @@ static void sd_erase(SDState *sd)
     uint64_t erase_end = sd->erase_end;
 
     trace_sdcard_erase(sd->erase_start, sd->erase_end);
-    if (!sd->erase_start || !sd->erase_end) {
+    if (sd->erase_start == INVALID_ADDRESS
+            || sd->erase_end == INVALID_ADDRESS) {
         sd->card_status |= ERASE_SEQ_ERROR;
         return;
     }
@@ -763,8 +766,8 @@ static void sd_erase(SDState *sd)
 
     erase_start = sd_addr_to_wpnum(erase_start);
     erase_end = sd_addr_to_wpnum(erase_end);
-    sd->erase_start = 0;
-    sd->erase_end = 0;
+    sd->erase_start = INVALID_ADDRESS;
+    sd->erase_end = INVALID_ADDRESS;
     sd->csd[14] |= 0x40;
 
     for (i = erase_start; i <= erase_end; i++) {
-- 
2.26.2



  parent reply	other threads:[~2020-10-21 17:37 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-21 17:34 [PULL 00/13] SD/MMC patches for 2020-10-21 Philippe Mathieu-Daudé
2020-10-21 17:34 ` [PULL 01/13] hw/sd/sdhci: Fix qemu_log_mask() format string Philippe Mathieu-Daudé
2020-10-21 17:34 ` [PULL 02/13] hw/sd/sdhci: Document the datasheet used Philippe Mathieu-Daudé
2020-10-21 17:34 ` [PULL 03/13] hw/sd/sdhci: Fix DMA Transfer Block Size field Philippe Mathieu-Daudé
2020-10-21 17:34 ` [PULL 04/13] hw/sd/sdhci: Stop multiple transfers when block count is cleared Philippe Mathieu-Daudé
2020-10-21 17:34 ` [PULL 05/13] hw/sd/sdhci: Resume pending DMA transfers on MMIO accesses Philippe Mathieu-Daudé
2020-10-21 17:34 ` [PULL 06/13] hw/sd/sdhci: Let sdhci_update_irq() return if IRQ was delivered Philippe Mathieu-Daudé
2020-10-21 17:34 ` [PULL 07/13] hw/sd/sdhci: Yield if interrupt delivered during multiple transfer Philippe Mathieu-Daudé
2020-10-21 17:34 ` [PULL 08/13] hw/sd/sdcard: Add trace event for ERASE command (CMD38) Philippe Mathieu-Daudé
2020-10-21 17:34 ` Philippe Mathieu-Daudé [this message]
2020-10-21 17:34 ` [PULL 10/13] hw/sd/sdcard: Do not use legal address '0' for INVALID_ADDRESS Philippe Mathieu-Daudé
2020-10-21 17:34 ` [PULL 11/13] hw/sd/sdcard: Reset both start/end addresses on error Philippe Mathieu-Daudé
2020-10-21 17:34 ` [PULL 12/13] hw/sd/sdcard: Do not attempt to erase out of range addresses Philippe Mathieu-Daudé
2020-10-21 17:34 ` [PULL 13/13] hw/sd/sdcard: Assert if accessing an illegal group Philippe Mathieu-Daudé
2020-10-22 11:33 ` [PULL 00/13] SD/MMC patches for 2020-10-21 Peter Maydell

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