[Qemu-devel] [PATCH 10/19] libqos/ahci: Add ide cmd properties

[John Snow <jsnow@redhat.com>]

Add a structure that defines some properties of various IDE commands.
These will be used to simplify the interface to the libqos AHCI calls,
lessening the redundancy of specifying and respecifying properties of
commands to various helper functions.

The "Invalid Command Sentinel" here that caps the property array is an
invalid ATA command, namely 0x01. 0x00 is NOP and 0xFF is reserved for
vendor usage, so I chose the first invalid one instead.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 tests/libqos/ahci.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/tests/libqos/ahci.c b/tests/libqos/ahci.c
index 924b9f0..f0e2a27 100644
--- a/tests/libqos/ahci.c
+++ b/tests/libqos/ahci.c
@@ -34,6 +34,48 @@
 #include "hw/pci/pci_ids.h"
 #include "hw/pci/pci_regs.h"
 
+typedef struct AHCICommandProp {
+    uint8_t  cmd;        /* Command Code */
+    bool     data;       /* Data transfer command? */
+    bool     pio;
+    bool     dma;
+    bool     lba28;
+    bool     lba48;
+    bool     read;
+    bool     write;
+    bool     atapi;
+    bool     ncq;
+    uint64_t size;       /* Static transfer size, for commands like IDENTIFY. */
+    uint32_t interrupts; /* Expected interrupts for this command. */
+} AHCICommandProp;
+
+#define CMD_INVALID_SENTINEL 0x01
+
+AHCICommandProp ahci_command_properties[] = {
+    { .cmd = CMD_READ_PIO,      .data = true,  .pio = true,
+                                .lba28 = true, .read = true },
+    { .cmd = CMD_WRITE_PIO,     .data = true,  .pio = true,
+                                .lba28 = true, .write = true },
+    { .cmd = CMD_READ_PIO_EXT,  .data = true,  .pio = true,
+                                .lba48 = true, .read = true },
+    { .cmd = CMD_WRITE_PIO_EXT, .data = true,  .pio = true,
+                                .lba48 = true, .write = true },
+    { .cmd = CMD_READ_DMA,      .data = true,  .dma = true,
+                                .lba28 = true, .read = true },
+    { .cmd = CMD_WRITE_DMA,     .data = true,  .dma = true,
+                                .lba28 = true, .write = true },
+    { .cmd = CMD_READ_DMA_EXT,  .data = true,  .dma = true,
+                                .lba48 = true, .read = true },
+    { .cmd = CMD_WRITE_DMA_EXT, .data = true,  .dma = true,
+                                .lba48 = true, .write = true },
+    { .cmd = CMD_IDENTIFY,      .data = true,  .pio = true,
+                                .size = 512,   .read = true },
+    { .cmd = CMD_READ_MAX,      .lba28 = true },
+    { .cmd = CMD_READ_MAX_EXT,  .lba48 = true },
+    { .cmd = CMD_FLUSH_CACHE,   .data = false },
+    { .cmd = CMD_INVALID_SENTINEL }
+};
+
 /**
  * Allocate space in the guest using information in the AHCIQState object.
  */
-- 
1.9.3