[Qemu-devel] [PATCH 14/19] libqos/ahci: Add ahci_guest_io

[John Snow <jsnow@redhat.com>]

ahci_guest_io is a shorthand function that will, in one shot,
execute a data command on the guest to the specified guest buffer
location, in the requested amount.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 tests/libqos/ahci.c | 15 +++++++++++++++
 tests/libqos/ahci.h |  2 ++
 2 files changed, 17 insertions(+)

diff --git a/tests/libqos/ahci.c b/tests/libqos/ahci.c
index 3375d54..d55dab8 100644
--- a/tests/libqos/ahci.c
+++ b/tests/libqos/ahci.c
@@ -536,6 +536,21 @@ inline unsigned size_to_prdtl(unsigned bytes, unsigned bytes_per_prd)
     return (bytes + bytes_per_prd - 1) / bytes_per_prd;
 }
 
+/* Given a guest buffer address, perform an IO operation */
+void ahci_guest_io(AHCIQState *ahci, uint8_t px, uint8_t ide_cmd,
+                   uint64_t buffer, size_t bufsize)
+{
+    AHCICommand *cmd;
+
+    cmd = ahci_command_create(ide_cmd);
+    ahci_command_set_buffer(cmd, buffer);
+    ahci_command_set_size(cmd, bufsize);
+    ahci_command_commit(ahci, cmd, px);
+    ahci_command_issue(ahci, cmd);
+    ahci_command_verify(ahci, cmd);
+    ahci_command_free(cmd);
+}
+
 typedef struct AHCICommand {
     /* Test Management Data */
     uint8_t name;
diff --git a/tests/libqos/ahci.h b/tests/libqos/ahci.h
index 1300967..cbde141 100644
--- a/tests/libqos/ahci.h
+++ b/tests/libqos/ahci.h
@@ -520,6 +520,8 @@ void ahci_set_command_header(AHCIQState *ahci, uint8_t px,
 void ahci_destroy_command(AHCIQState *ahci, uint8_t px, uint8_t cx);
 unsigned ahci_pick_cmd(AHCIQState *ahci, uint8_t px);
 unsigned size_to_prdtl(unsigned bytes, unsigned bytes_per_prd);
+void ahci_guest_io(AHCIQState *ahci, uint8_t px, uint8_t ide_cmd,
+                   uint64_t gbuffer, size_t size);
 
 /* Command Lifecycle */
 AHCICommand *ahci_command_create(uint8_t command_name);
-- 
1.9.3