From: John Snow <js...@redhat.com>
This patch adds a few helpers to help sanity-check the response of the
AHCI device after a command.
ahci_d2h_check_sanity inspects the D2H Register FIS,
ahci_pio_check_sanity inspects the PIO Setup FIS, and
ahci_cmd_check_sanity inspects the command header.
To support the PIO sanity check, a new structure is added for the
PIO Setup FIS type. Existing FIS types (H2D and D2H) have had their
members renamed slightly to condense reserved members into fewer
fields; and LBA fields are now represented by arrays of 8 byte chunks
instead of independent variables.
Signed-off-by: John Snow <js...@redhat.com>
Reviewed-by: Paolo Bonzini <pbonz...@redhat.com>
Message-id: 1423158090-25580-9-git-send-email-js...@redhat.com
Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com>
---
tests/ahci-test.c | 29 ++++------------------------
tests/libqos/ahci.c | 47 ++++++++++++++++++++++++++++++++++++++++++++++
tests/libqos/ahci.h | 54 ++++++++++++++++++++++++++++++++++++-----------------
3 files changed, 88 insertions(+), 42 deletions(-)
diff --git a/tests/ahci-test.c b/tests/ahci-test.c
index 4cc7e21..b67d935 100644
--- a/tests/ahci-test.c
+++ b/tests/ahci-test.c
@@ -657,12 +657,10 @@ static void ahci_test_port_spec(AHCIQState *ahci, uint8_t
port)
*/
static void ahci_test_identify(AHCIQState *ahci)
{
- RegD2HFIS *d2h = g_malloc0(0x20);
- RegD2HFIS *pio = g_malloc0(0x20);
RegH2DFIS fis;
AHCICommandHeader cmd;
PRD prd;
- uint32_t reg, data_ptr;
+ uint32_t data_ptr;
uint16_t buff[256];
unsigned i;
int rc;
@@ -752,27 +750,11 @@ static void ahci_test_identify(AHCIQState *ahci)
/* BUG: we expect AHCI_PX_IS_DPS to be set. */
ahci_port_check_interrupts(ahci, i, AHCI_PX_IS_DHRS | AHCI_PX_IS_PSS);
ahci_port_check_nonbusy(ahci, i, cx);
-
/* Investigate the CMD, assert that we read 512 bytes */
- ahci_get_command_header(ahci, i, cx, &cmd);
- g_assert_cmphex(512, ==, cmd.prdbc);
-
+ ahci_port_check_cmd_sanity(ahci, i, cx, 512);
/* Investigate FIS responses */
- memread(ahci->port[i].fb + 0x20, pio, 0x20);
- memread(ahci->port[i].fb + 0x40, d2h, 0x20);
- g_assert_cmphex(pio->fis_type, ==, 0x5f);
- g_assert_cmphex(d2h->fis_type, ==, 0x34);
- g_assert_cmphex(pio->flags, ==, d2h->flags);
- g_assert_cmphex(pio->status, ==, d2h->status);
- g_assert_cmphex(pio->error, ==, d2h->error);
-
- reg = ahci_px_rreg(ahci, i, AHCI_PX_TFD);
- g_assert_cmphex((reg & AHCI_PX_TFD_ERR), ==, pio->error);
- g_assert_cmphex((reg & AHCI_PX_TFD_STS), ==, pio->status);
- /* The PIO Setup FIS contains a "bytes read" field, which is a
- * 16-bit value. The Physical Region Descriptor Byte Count is
- * 32-bit, but for small transfers using one PRD, it should match. */
- g_assert_cmphex(le16_to_cpu(pio->res4), ==, cmd.prdbc);
+ ahci_port_check_d2h_sanity(ahci, i, cx);
+ ahci_port_check_pio_sanity(ahci, i, cx, 512);
/* Last, but not least: Investigate the IDENTIFY response data. */
memread(data_ptr, &buff, 512);
@@ -789,9 +771,6 @@ static void ahci_test_identify(AHCIQState *ahci)
string_bswap16(&buff[23], 8);
rc = memcmp(&buff[23], "version ", 8);
g_assert_cmphex(rc, ==, 0);
-
- g_free(d2h);
- g_free(pio);
}
/******************************************************************************/
diff --git a/tests/libqos/ahci.c b/tests/libqos/ahci.c
index db3055f..36a7c93 100644
--- a/tests/libqos/ahci.c
+++ b/tests/libqos/ahci.c
@@ -365,6 +365,53 @@ void ahci_port_check_nonbusy(AHCIQState *ahci, uint8_t
port, uint8_t slot)
ASSERT_BIT_CLEAR(reg, AHCI_PX_TFD_STS_DRQ);
}
+void ahci_port_check_d2h_sanity(AHCIQState *ahci, uint8_t port, uint8_t slot)
+{
+ RegD2HFIS *d2h = g_malloc0(0x20);
+ uint32_t reg;
+
+ memread(ahci->port[port].fb + 0x40, d2h, 0x20);
+ g_assert_cmphex(d2h->fis_type, ==, 0x34);
+
+ reg = ahci_px_rreg(ahci, port, AHCI_PX_TFD);
+ g_assert_cmphex((reg & AHCI_PX_TFD_ERR) >> 8, ==, d2h->error);
+ g_assert_cmphex((reg & AHCI_PX_TFD_STS), ==, d2h->status);
+
+ g_free(d2h);
+}
+
+void ahci_port_check_pio_sanity(AHCIQState *ahci, uint8_t port,
+ uint8_t slot, size_t buffsize)
+{
+ PIOSetupFIS *pio = g_malloc0(0x20);
+
+ /* We cannot check the Status or E_Status registers, becuase
+ * the status may have again changed between the PIO Setup FIS
+ * and the conclusion of the command with the D2H Register FIS. */
+ memread(ahci->port[port].fb + 0x20, pio, 0x20);
+ g_assert_cmphex(pio->fis_type, ==, 0x5f);
+
+ /* BUG: PIO Setup FIS as utilized by QEMU tries to fit the entire
+ * transfer size in a uint16_t field. The maximum transfer size can
+ * eclipse this; the field is meant to convey the size of data per
+ * each Data FIS, not the entire operation as a whole. For now,
+ * we will sanity check the broken case where applicable. */
+ if (buffsize <= UINT16_MAX) {
+ g_assert_cmphex(le16_to_cpu(pio->tx_count), ==, buffsize);
+ }
+
+ g_free(pio);
+}
+
+void ahci_port_check_cmd_sanity(AHCIQState *ahci, uint8_t port,
+ uint8_t slot, size_t buffsize)
+{
+ AHCICommandHeader cmd;
+
+ ahci_get_command_header(ahci, port, slot, &cmd);
+ g_assert_cmphex(buffsize, ==, cmd.prdbc);
+}
+
/* Get the command in #slot of port #port. */
void ahci_get_command_header(AHCIQState *ahci, uint8_t port,
uint8_t slot, AHCICommandHeader *cmd)
diff --git a/tests/libqos/ahci.h b/tests/libqos/ahci.h
index eaad076..f17aa23 100644
--- a/tests/libqos/ahci.h
+++ b/tests/libqos/ahci.h
@@ -283,25 +283,44 @@ typedef struct RegD2HFIS {
uint8_t status;
uint8_t error;
/* DW1 */
- uint8_t lba_low;
- uint8_t lba_mid;
- uint8_t lba_high;
+ uint8_t lba_lo[3];
uint8_t device;
/* DW2 */
- uint8_t lba3;
- uint8_t lba4;
- uint8_t lba5;
- uint8_t res1;
+ uint8_t lba_hi[3];
+ uint8_t res0;
/* DW3 */
uint16_t count;
- uint8_t res2;
- uint8_t res3;
+ uint16_t res1;
/* DW4 */
- uint16_t res4;
- uint16_t res5;
+ uint32_t res2;
} __attribute__((__packed__)) RegD2HFIS;
/**
+ * Register device-to-host FIS structure;
+ * PIO Setup variety.
+ */
+typedef struct PIOSetupFIS {
+ /* DW0 */
+ uint8_t fis_type;
+ uint8_t flags;
+ uint8_t status;
+ uint8_t error;
+ /* DW1 */
+ uint8_t lba_lo[3];
+ uint8_t device;
+ /* DW2 */
+ uint8_t lba_hi[3];
+ uint8_t res0;
+ /* DW3 */
+ uint16_t count;
+ uint8_t res1;
+ uint8_t e_status;
+ /* DW4 */
+ uint16_t tx_count;
+ uint16_t res2;
+} __attribute__((__packed__)) PIOSetupFIS;
+
+/**
* Register host-to-device FIS structure.
*/
typedef struct RegH2DFIS {
@@ -311,14 +330,10 @@ typedef struct RegH2DFIS {
uint8_t command;
uint8_t feature_low;
/* DW1 */
- uint8_t lba_low;
- uint8_t lba_mid;
- uint8_t lba_high;
+ uint8_t lba_lo[3];
uint8_t device;
/* DW2 */
- uint8_t lba3;
- uint8_t lba4;
- uint8_t lba5;
+ uint8_t lba_hi[3];
uint8_t feature_high;
/* DW3 */
uint16_t count;
@@ -437,6 +452,11 @@ void ahci_port_check_error(AHCIQState *ahci, uint8_t port);
void ahci_port_check_interrupts(AHCIQState *ahci, uint8_t port,
uint32_t intr_mask);
void ahci_port_check_nonbusy(AHCIQState *ahci, uint8_t port, uint8_t slot);
+void ahci_port_check_d2h_sanity(AHCIQState *ahci, uint8_t port, uint8_t slot);
+void ahci_port_check_pio_sanity(AHCIQState *ahci, uint8_t port,
+ uint8_t slot, size_t buffsize);
+void ahci_port_check_cmd_sanity(AHCIQState *ahci, uint8_t port,
+ uint8_t slot, size_t buffsize);
void ahci_get_command_header(AHCIQState *ahci, uint8_t port,
uint8_t slot, AHCICommandHeader *cmd);
void ahci_set_command_header(AHCIQState *ahci, uint8_t port,
--
2.1.0
