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[Qemu-devel] [PATCH 02/19] libqos/ahci: Add ahci_port_clear helper
From: |
John Snow |
Subject: |
[Qemu-devel] [PATCH 02/19] libqos/ahci: Add ahci_port_clear helper |
Date: |
Fri, 30 Jan 2015 13:41:56 -0500 |
Add a helper that assists in clearing out potentially old error and FIS
information from an AHCI port's data structures. This ensures we always
start with a blank slate for interrupt and FIS receipt information.
Signed-off-by: John Snow <address@hidden>
---
tests/ahci-test.c | 9 ++-------
tests/libqos/ahci.c | 16 ++++++++++++++++
tests/libqos/ahci.h | 1 +
3 files changed, 19 insertions(+), 7 deletions(-)
diff --git a/tests/ahci-test.c b/tests/ahci-test.c
index c689b62..90647f2 100644
--- a/tests/ahci-test.c
+++ b/tests/ahci-test.c
@@ -687,13 +687,8 @@ static void ahci_test_identify(AHCIQState *ahci)
i = ahci_port_select(ahci);
g_test_message("Selected port %u for test", i);
- /* Clear out this port's interrupts (ignore the init register d2h fis) */
- reg = ahci_px_rreg(ahci, i, AHCI_PX_IS);
- ahci_px_wreg(ahci, i, AHCI_PX_IS, reg);
- g_assert_cmphex(ahci_px_rreg(ahci, i, AHCI_PX_IS), ==, 0);
-
- /* Wipe the FIS-Receive Buffer */
- qmemset(ahci->port[i].fb, 0x00, 0x100);
+ /* Clear out the FIS Receive area and any pending interrupts. */
+ ahci_port_clear(ahci, i);
/* Create a Command Table buffer. 0x80 is the smallest with a PRDTL of 0.
*/
/* We need at least one PRD, so round up to the nearest 0x80 multiple.
*/
diff --git a/tests/libqos/ahci.c b/tests/libqos/ahci.c
index 8874790..9195bd6 100644
--- a/tests/libqos/ahci.c
+++ b/tests/libqos/ahci.c
@@ -294,3 +294,19 @@ unsigned ahci_port_select(AHCIQState *ahci)
g_assert(i < 32);
return i;
}
+
+/**
+ * Clear a port's interrupts and status information prior to a test.
+ */
+void ahci_port_clear(AHCIQState *ahci, uint8_t px)
+{
+ uint32_t reg;
+
+ /* Clear out this port's interrupts (ignore the init register d2h fis) */
+ reg = ahci_px_rreg(ahci, px, AHCI_PX_IS);
+ ahci_px_wreg(ahci, px, AHCI_PX_IS, reg);
+ g_assert_cmphex(ahci_px_rreg(ahci, px, AHCI_PX_IS), ==, 0);
+
+ /* Wipe the FIS-Recieve Buffer */
+ qmemset(ahci->port[px].fb, 0x00, 0x100);
+}
diff --git a/tests/libqos/ahci.h b/tests/libqos/ahci.h
index b3992e1..49ddee5 100644
--- a/tests/libqos/ahci.h
+++ b/tests/libqos/ahci.h
@@ -432,5 +432,6 @@ void ahci_pci_enable(AHCIQState *ahci);
void start_ahci_device(AHCIQState *ahci);
void ahci_hba_enable(AHCIQState *ahci);
unsigned ahci_port_select(AHCIQState *ahci);
+void ahci_port_clear(AHCIQState *ahci, uint8_t px);
#endif
--
1.9.3
- [Qemu-devel] [PATCH 00/19] qtest/ahci: add dma test, John Snow, 2015/01/30
- [Qemu-devel] [PATCH 01/19] libqos/ahci: Add ahci_port_select helper, John Snow, 2015/01/30
- [Qemu-devel] [PATCH 06/19] libqos/ahci: Add ahci_port_check_interrupts helper, John Snow, 2015/01/30
- [Qemu-devel] [PATCH 07/19] libqos/ahci: Add port_check_nonbusy helper, John Snow, 2015/01/30
- [Qemu-devel] [PATCH 03/19] qtest/ahci: rename 'Command' to 'CommandHeader', John Snow, 2015/01/30
- [Qemu-devel] [PATCH 02/19] libqos/ahci: Add ahci_port_clear helper,
John Snow <=
- [Qemu-devel] [PATCH 05/19] libqos/ahci: Add ahci_port_check_error helper, John Snow, 2015/01/30
- [Qemu-devel] [PATCH 04/19] libqos/ahci: Add command header helpers, John Snow, 2015/01/30
- [Qemu-devel] [PATCH 09/19] qtest/ahci: Demagic ahci tests., John Snow, 2015/01/30
- [Qemu-devel] [PATCH 13/19] libqos/ahci: add ahci command size setters, John Snow, 2015/01/30
- [Qemu-devel] [PATCH 08/19] libqos/ahci: Add cmd response sanity check helpers, John Snow, 2015/01/30
- [Qemu-devel] [PATCH 10/19] libqos/ahci: Add ide cmd properties, John Snow, 2015/01/30
- [Qemu-devel] [PATCH 14/19] libqos/ahci: Add ahci_guest_io, John Snow, 2015/01/30
- [Qemu-devel] [PATCH 11/19] libqos/ahci: add ahci command functions, John Snow, 2015/01/30
- [Qemu-devel] [PATCH 17/19] qtest/ahci: Add a macro bootup routine, John Snow, 2015/01/30
- [Qemu-devel] [PATCH 12/19] libqos/ahci: add ahci command verify, John Snow, 2015/01/30