[Qemu-devel] [PATCH v2 10/19] qtest/ahci: add ahci_write_fis

[John Snow <jsnow@redhat.com>]

Similar to ahci_set_command_header, add a helper that takes an
in-memory representation of a command FIS and writes it to guest
memory, handling endianness as-needed.

Signed-off-by: John Snow <jsnow@redhat.com>
---
 tests/ahci-test.c   |  2 +-
 tests/libqos/ahci.c | 10 ++++++++++
 tests/libqos/ahci.h |  1 +
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/tests/ahci-test.c b/tests/ahci-test.c
index 211274e..658956d 100644
--- a/tests/ahci-test.c
+++ b/tests/ahci-test.c
@@ -728,7 +728,7 @@ static void ahci_test_identify(AHCIQState *ahci)
     g_assert_cmphex(ahci_px_rreg(ahci, i, AHCI_PX_IS), ==, 0);
 
     /* Commit the Command FIS to the Command Table */
-    memwrite(table, &fis, sizeof(fis));
+    ahci_write_fis(ahci, &fis, table);
 
     /* Commit the PRD entry to the Command Table */
     memwrite(table + 0x80, &prd, sizeof(prd));
diff --git a/tests/libqos/ahci.c b/tests/libqos/ahci.c
index ec72627..7336781 100644
--- a/tests/libqos/ahci.c
+++ b/tests/libqos/ahci.c
@@ -464,6 +464,16 @@ void ahci_destroy_command(AHCIQState *ahci, uint8_t px, uint8_t cx)
     ahci->port[px].prdtl[cx] = 0;
 }
 
+void ahci_write_fis(AHCIQState *ahci, RegH2DFIS *fis, uint64_t addr)
+{
+    RegH2DFIS tmp = *fis;
+
+    /* All other FIS fields are 8 bit and do not need to be flipped. */
+    tmp.count = cpu_to_le16(tmp.count);
+
+    memwrite(addr, &tmp, sizeof(tmp));
+}
+
 unsigned ahci_pick_cmd(AHCIQState *ahci, uint8_t px)
 {
     unsigned i;
diff --git a/tests/libqos/ahci.h b/tests/libqos/ahci.h
index 0d12582..d43210f 100644
--- a/tests/libqos/ahci.h
+++ b/tests/libqos/ahci.h
@@ -515,6 +515,7 @@ void ahci_get_command_header(AHCIQState *ahci, uint8_t px,
 void ahci_set_command_header(AHCIQState *ahci, uint8_t px,
                              uint8_t cx, AHCICommandHeader *cmd);
 void ahci_destroy_command(AHCIQState *ahci, uint8_t px, uint8_t cx);
+void ahci_write_fis(AHCIQState *ahci, RegH2DFIS *fis, uint64_t addr);
 unsigned ahci_pick_cmd(AHCIQState *ahci, uint8_t px);
 
 #endif
-- 
1.9.3