From: Nicholas Piggin <[email protected]>
qtests spapr dma was broken because the iommu was not set up.
spapr requires hypercalls to set up the iommu (TCE tables), but
there is no support for that or a side-channel to the iommu in
qtests at the moment, so add a quick workaround in QEMU to have
the spapr iommu provide a linear map to memory when running
qtests.
The buggy msix checks can all be removed since the tests all work
now.
Reviewed-by: Fabiano Rosas <[email protected]>
Signed-off-by: Nicholas Piggin <[email protected]>
---
hw/ppc/spapr_iommu.c | 10 +++++++++-
tests/qtest/e1000e-test.c | 21 ---------------------
tests/qtest/igb-test.c | 21 ---------------------
tests/qtest/libqos/generic-pcihost.c | 1 -
tests/qtest/libqos/pci-pc.c | 3 ---
tests/qtest/libqos/pci-spapr.c | 7 ++++---
tests/qtest/libqos/pci.c | 14 --------------
tests/qtest/libqos/pci.h | 4 ----
tests/qtest/nvme-test.c | 4 ----
tests/qtest/vhost-user-blk-test.c | 6 ------
tests/qtest/virtio-blk-test.c | 12 ------------
11 files changed, 13 insertions(+), 90 deletions(-)
diff --git a/hw/ppc/spapr_iommu.c b/hw/ppc/spapr_iommu.c
index e6264b07..5470602e 100644
--- a/hw/ppc/spapr_iommu.c
+++ b/hw/ppc/spapr_iommu.c
@@ -22,6 +22,8 @@
#include "qemu/log.h"
#include "qemu/module.h"
#include "system/kvm.h"
+#include "system/qtest.h"
+#include "exec/target_page.h"
#include "kvm_ppc.h"
#include "migration/vmstate.h"
#include "system/dma.h"
@@ -125,7 +127,13 @@ static IOMMUTLBEntry
spapr_tce_translate_iommu(IOMMUMemoryRegion *iommu,
.perm = IOMMU_NONE,
};
- if ((addr >> tcet->page_shift) < tcet->nb_table) {
+ if (qtest_enabled()) {
+ /* spapr qtests does not set up the IOMMU, shortcut a linear map */
+ ret.iova = addr & TARGET_PAGE_MASK;
+ ret.translated_addr = addr & TARGET_PAGE_MASK;
+ ret.addr_mask = ~TARGET_PAGE_MASK;
+ ret.perm = IOMMU_RW;
+ } else if ((addr >> tcet->page_shift) < tcet->nb_table) {
/* Check if we are in bound */
hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
diff --git a/tests/qtest/e1000e-test.c b/tests/qtest/e1000e-test.c
index de9738fd..8300bf5a 100644
--- a/tests/qtest/e1000e-test.c
+++ b/tests/qtest/e1000e-test.c
@@ -139,13 +139,6 @@ static void test_e1000e_tx(void *obj, void *data,
QGuestAllocator * alloc)
{
QE1000E_PCI *e1000e = obj;
QE1000E *d = &e1000e->e1000e;
- QOSGraphObject *e_object = obj;
- QPCIDevice *dev = e_object->get_driver(e_object, "pci-device");
-
- /* FIXME: add spapr support */
- if (qpci_check_buggy_msi(dev)) {
- return;
- }
e1000e_send_verify(d, data, alloc);
}
@@ -154,13 +147,6 @@ static void test_e1000e_rx(void *obj, void *data,
QGuestAllocator * alloc)
{
QE1000E_PCI *e1000e = obj;
QE1000E *d = &e1000e->e1000e;
- QOSGraphObject *e_object = obj;
- QPCIDevice *dev = e_object->get_driver(e_object, "pci-device");
-
- /* FIXME: add spapr support */
- if (qpci_check_buggy_msi(dev)) {
- return;
- }
e1000e_receive_verify(d, data, alloc);
}
@@ -173,13 +159,6 @@ static void test_e1000e_multiple_transfers(void *obj, void
*data,
QE1000E_PCI *e1000e = obj;
QE1000E *d = &e1000e->e1000e;
- QOSGraphObject *e_object = obj;
- QPCIDevice *dev = e_object->get_driver(e_object, "pci-device");
-
- /* FIXME: add spapr support */
- if (qpci_check_buggy_msi(dev)) {
- return;
- }
for (i = 0; i < iterations; i++) {
e1000e_send_verify(d, data, alloc);
diff --git a/tests/qtest/igb-test.c b/tests/qtest/igb-test.c
index 3d397ea6..1b3b5aa6 100644
--- a/tests/qtest/igb-test.c
+++ b/tests/qtest/igb-test.c
@@ -142,13 +142,6 @@ static void test_igb_tx(void *obj, void *data,
QGuestAllocator * alloc)
{
QE1000E_PCI *e1000e = obj;
QE1000E *d = &e1000e->e1000e;
- QOSGraphObject *e_object = obj;
- QPCIDevice *dev = e_object->get_driver(e_object, "pci-device");
-
- /* FIXME: add spapr support */
- if (qpci_check_buggy_msi(dev)) {
- return;
- }
igb_send_verify(d, data, alloc);
}
@@ -157,13 +150,6 @@ static void test_igb_rx(void *obj, void *data,
QGuestAllocator * alloc)
{
QE1000E_PCI *e1000e = obj;
QE1000E *d = &e1000e->e1000e;
- QOSGraphObject *e_object = obj;
- QPCIDevice *dev = e_object->get_driver(e_object, "pci-device");
-
- /* FIXME: add spapr support */
- if (qpci_check_buggy_msi(dev)) {
- return;
- }
igb_receive_verify(d, data, alloc);
}
@@ -176,13 +162,6 @@ static void test_igb_multiple_transfers(void *obj, void
*data,
QE1000E_PCI *e1000e = obj;
QE1000E *d = &e1000e->e1000e;
- QOSGraphObject *e_object = obj;
- QPCIDevice *dev = e_object->get_driver(e_object, "pci-device");
-
- /* FIXME: add spapr support */
- if (qpci_check_buggy_msi(dev)) {
- return;
- }
for (i = 0; i < iterations; i++) {
igb_send_verify(d, data, alloc);
diff --git a/tests/qtest/libqos/generic-pcihost.c
b/tests/qtest/libqos/generic-pcihost.c
index b7761752..93cc3b85 100644
--- a/tests/qtest/libqos/generic-pcihost.c
+++ b/tests/qtest/libqos/generic-pcihost.c
@@ -182,7 +182,6 @@ void qpci_init_generic(QGenericPCIBus *qpci, QTestState
*qts,
qpci->gpex_pio_base = 0x3eff0000;
qpci->bus.not_hotpluggable = !hotpluggable;
- qpci->bus.has_buggy_msi = false;
qpci->bus.pio_readb = qpci_generic_pio_readb;
qpci->bus.pio_readw = qpci_generic_pio_readw;
diff --git a/tests/qtest/libqos/pci-pc.c b/tests/qtest/libqos/pci-pc.c
index 147009f4..8b79d858 100644
--- a/tests/qtest/libqos/pci-pc.c
+++ b/tests/qtest/libqos/pci-pc.c
@@ -124,9 +124,6 @@ void qpci_init_pc(QPCIBusPC *qpci, QTestState *qts,
QGuestAllocator *alloc)
{
assert(qts);
- /* tests can use pci-bus */
- qpci->bus.has_buggy_msi = false;
-
qpci->bus.pio_readb = qpci_pc_pio_readb;
qpci->bus.pio_readw = qpci_pc_pio_readw;
qpci->bus.pio_readl = qpci_pc_pio_readl;
diff --git a/tests/qtest/libqos/pci-spapr.c b/tests/qtest/libqos/pci-spapr.c
index 3723cbb3..b58cc1b5 100644
--- a/tests/qtest/libqos/pci-spapr.c
+++ b/tests/qtest/libqos/pci-spapr.c
@@ -20,6 +20,10 @@
* PCI devices are always little-endian
* SPAPR by default is big-endian
* so PCI accessors need to swap data endianness
+ *
+ * The spapr iommu model has a qtest_enabled() check that short-cuts
+ * the TCE table and provides a linear map for DMA, since qtests does
+ * not have a way to make hcalls to set up the TCE table.
*/
static uint8_t qpci_spapr_pio_readb(QPCIBus *bus, uint32_t addr)
@@ -155,9 +159,6 @@ void qpci_init_spapr(QPCIBusSPAPR *qpci, QTestState *qts,
{
assert(qts);
- /* tests cannot use spapr, needs to be fixed first */
- qpci->bus.has_buggy_msi = true;
-
qpci->alloc = alloc;
qpci->bus.pio_readb = qpci_spapr_pio_readb;
diff --git a/tests/qtest/libqos/pci.c b/tests/qtest/libqos/pci.c
index 986ce31d..76b13ade 100644
--- a/tests/qtest/libqos/pci.c
+++ b/tests/qtest/libqos/pci.c
@@ -53,20 +53,6 @@ void qpci_device_foreach(QPCIBus *bus, int vendor_id, int
device_id,
}
}
-bool qpci_has_buggy_msi(QPCIDevice *dev)
-{
- return dev->bus->has_buggy_msi;
-}
-
-bool qpci_check_buggy_msi(QPCIDevice *dev)
-{
- if (qpci_has_buggy_msi(dev)) {
- g_test_skip("Skipping due to incomplete support for MSI");
- return true;
- }
- return false;
-}
-
static void qpci_device_set(QPCIDevice *dev, QPCIBus *bus, int devfn)
{
g_assert(dev);
diff --git a/tests/qtest/libqos/pci.h b/tests/qtest/libqos/pci.h
index 9f8f154c..ef40a691 100644
--- a/tests/qtest/libqos/pci.h
+++ b/tests/qtest/libqos/pci.h
@@ -51,7 +51,6 @@ struct QPCIBus {
QTestState *qts;
uint64_t pio_alloc_ptr, pio_limit;
uint64_t mmio_alloc_ptr, mmio_limit;
- bool has_buggy_msi; /* TRUE for spapr, FALSE for pci */
bool not_hotpluggable; /* TRUE if devices cannot be hotplugged */
};
@@ -83,9 +82,6 @@ QPCIDevice *qpci_device_find(QPCIBus *bus, int devfn);
void qpci_device_init(QPCIDevice *dev, QPCIBus *bus, QPCIAddress *addr);
int qpci_secondary_buses_init(QPCIBus *bus);
-bool qpci_has_buggy_msi(QPCIDevice *dev);
-bool qpci_check_buggy_msi(QPCIDevice *dev);
-
void qpci_device_enable(QPCIDevice *dev);
uint8_t qpci_find_capability(QPCIDevice *dev, uint8_t id, uint8_t start_addr);
void qpci_msix_enable(QPCIDevice *dev);
diff --git a/tests/qtest/nvme-test.c b/tests/qtest/nvme-test.c
index f9395cc2..388011be 100644
--- a/tests/qtest/nvme-test.c
+++ b/tests/qtest/nvme-test.c
@@ -492,10 +492,6 @@ static void test_migrate(void *obj, void *data,
QGuestAllocator *alloc)
{ 333, false }
};
- if (qpci_check_buggy_msi(pdev)) {
- return;
- }
-
