[Qemu-devel] [PATCH 08/23] ide: Convert DMA read/write commands to ide_cmd_table handler

[Stefan Hajnoczi <stefanha@redhat.com>]

From: Kevin Wolf <kwolf@redhat.com>

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 hw/ide/core.c | 69 ++++++++++++++++++++++++++++++++---------------------------
 1 file changed, 38 insertions(+), 31 deletions(-)

diff --git a/hw/ide/core.c b/hw/ide/core.c
index 86af4b0..2c8a0ff 100644
--- a/hw/ide/core.c
+++ b/hw/ide/core.c
@@ -1152,6 +1152,38 @@ static bool cmd_write_pio(IDEState *s, uint8_t cmd)
     return false;
 }
 
+static bool cmd_read_dma(IDEState *s, uint8_t cmd)
+{
+    bool lba48 = (cmd == WIN_READDMA_EXT);
+
+    if (!s->bs) {
+        ide_abort_command(s);
+        return true;
+    }
+
+    ide_cmd_lba48_transform(s, lba48);
+    ide_sector_start_dma(s, IDE_DMA_READ);
+
+    return false;
+}
+
+static bool cmd_write_dma(IDEState *s, uint8_t cmd)
+{
+    bool lba48 = (cmd == WIN_WRITEDMA_EXT);
+
+    if (!s->bs) {
+        ide_abort_command(s);
+        return true;
+    }
+
+    ide_cmd_lba48_transform(s, lba48);
+    ide_sector_start_dma(s, IDE_DMA_WRITE);
+
+    s->media_changed = 1;
+
+    return false;
+}
+
 #define HD_OK (1u << IDE_HD)
 #define CD_OK (1u << IDE_CD)
 #define CFA_OK (1u << IDE_CFATA)
@@ -1175,13 +1207,13 @@ static const struct {
     [WIN_READ]                    = { cmd_read_pio, ALL_OK },
     [WIN_READ_ONCE]               = { cmd_read_pio, ALL_OK },
     [WIN_READ_EXT]                = { cmd_read_pio, HD_CFA_OK },
-    [WIN_READDMA_EXT]             = { NULL, HD_CFA_OK },
+    [WIN_READDMA_EXT]             = { cmd_read_dma, HD_CFA_OK },
     [WIN_READ_NATIVE_MAX_EXT]     = { NULL, HD_CFA_OK },
     [WIN_MULTREAD_EXT]            = { cmd_read_multiple, HD_CFA_OK },
     [WIN_WRITE]                   = { cmd_write_pio, HD_CFA_OK },
     [WIN_WRITE_ONCE]              = { cmd_write_pio, HD_CFA_OK },
     [WIN_WRITE_EXT]               = { cmd_write_pio, HD_CFA_OK },
-    [WIN_WRITEDMA_EXT]            = { NULL, HD_CFA_OK },
+    [WIN_WRITEDMA_EXT]            = { cmd_write_dma, HD_CFA_OK },
     [CFA_WRITE_SECT_WO_ERASE]     = { cmd_write_pio, CFA_OK },
     [WIN_MULTWRITE_EXT]           = { cmd_write_multiple, HD_CFA_OK },
     [WIN_WRITE_VERIFY]            = { cmd_write_pio, HD_CFA_OK },
@@ -1206,10 +1238,10 @@ static const struct {
     [WIN_MULTREAD]                = { cmd_read_multiple, HD_CFA_OK },
     [WIN_MULTWRITE]               = { cmd_write_multiple, HD_CFA_OK },
     [WIN_SETMULT]                 = { cmd_set_multiple_mode, HD_CFA_OK | SET_DSC },
-    [WIN_READDMA]                 = { NULL, HD_CFA_OK },
-    [WIN_READDMA_ONCE]            = { NULL, HD_CFA_OK },
-    [WIN_WRITEDMA]                = { NULL, HD_CFA_OK },
-    [WIN_WRITEDMA_ONCE]           = { NULL, HD_CFA_OK },
+    [WIN_READDMA]                 = { cmd_read_dma, HD_CFA_OK },
+    [WIN_READDMA_ONCE]            = { cmd_read_dma, HD_CFA_OK },
+    [WIN_WRITEDMA]                = { cmd_write_dma, HD_CFA_OK },
+    [WIN_WRITEDMA_ONCE]           = { cmd_write_dma, HD_CFA_OK },
     [CFA_WRITE_MULTI_WO_ERASE]    = { cmd_write_multiple, CFA_OK },
     [WIN_STANDBYNOW1]             = { cmd_nop, ALL_OK },
     [WIN_IDLEIMMEDIATE]           = { cmd_nop, ALL_OK },
@@ -1277,31 +1309,6 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val)
     }
 
     switch(val) {
-    case WIN_READDMA_EXT:
-        lba48 = 1;
-        /* fall through */
-    case WIN_READDMA:
-    case WIN_READDMA_ONCE:
-        if (!s->bs) {
-            goto abort_cmd;
-        }
-	ide_cmd_lba48_transform(s, lba48);
-        ide_sector_start_dma(s, IDE_DMA_READ);
-        break;
-
-    case WIN_WRITEDMA_EXT:
-        lba48 = 1;
-        /* fall through */
-    case WIN_WRITEDMA:
-    case WIN_WRITEDMA_ONCE:
-        if (!s->bs) {
-            goto abort_cmd;
-        }
-	ide_cmd_lba48_transform(s, lba48);
-        ide_sector_start_dma(s, IDE_DMA_WRITE);
-        s->media_changed = 1;
-        break;
-
     case WIN_READ_NATIVE_MAX_EXT:
         lba48 = 1;
         /* fall through */
-- 
1.8.1.4