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authorPhilippe Mathieu-Daudé <philmd@redhat.com>2020-11-03 03:07:29 +0100
committerStefan Hajnoczi <stefanha@redhat.com>2020-11-03 19:06:23 +0000
commitdf058222e77963e9bece723d19142354ed443d4a (patch)
tree68fc0b0d4948dbbebbc2370c56e9a0b6a6e79a23
parent3d87c2d9435a4c71d588a770a8a34382c1afa9c1 (diff)
util/vfio-helpers: Trace PCI BAR region info
For debug purpose, trace BAR regions info. Reviewed-by: Fam Zheng <fam@euphon.net> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: 20201103020733.2303148-4-philmd@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Tested-by: Eric Auger <eric.auger@redhat.com>
-rw-r--r--util/trace-events1
-rw-r--r--util/vfio-helpers.c8
2 files changed, 9 insertions, 0 deletions
diff --git a/util/trace-events b/util/trace-events
index 8d3615e717..0753e4a0ed 100644
--- a/util/trace-events
+++ b/util/trace-events
@@ -87,3 +87,4 @@ qemu_vfio_dma_map(void *s, void *host, size_t size, bool temporary, uint64_t *io
qemu_vfio_dma_unmap(void *s, void *host) "s %p host %p"
qemu_vfio_pci_read_config(void *buf, int ofs, int size, uint64_t region_ofs, uint64_t region_size) "read cfg ptr %p ofs 0x%x size 0x%x (region addr 0x%"PRIx64" size 0x%"PRIx64")"
qemu_vfio_pci_write_config(void *buf, int ofs, int size, uint64_t region_ofs, uint64_t region_size) "write cfg ptr %p ofs 0x%x size 0x%x (region addr 0x%"PRIx64" size 0x%"PRIx64")"
+qemu_vfio_region_info(const char *desc, uint64_t region_ofs, uint64_t region_size, uint32_t cap_offset) "region '%s' addr 0x%"PRIx64" size 0x%"PRIx64" cap_ofs 0x%"PRIx32
diff --git a/util/vfio-helpers.c b/util/vfio-helpers.c
index 1d4efafcaa..cd6287c3a9 100644
--- a/util/vfio-helpers.c
+++ b/util/vfio-helpers.c
@@ -136,6 +136,7 @@ static inline void assert_bar_index_valid(QEMUVFIOState *s, int index)
static int qemu_vfio_pci_init_bar(QEMUVFIOState *s, int index, Error **errp)
{
+ g_autofree char *barname = NULL;
assert_bar_index_valid(s, index);
s->bar_region_info[index] = (struct vfio_region_info) {
.index = VFIO_PCI_BAR0_REGION_INDEX + index,
@@ -145,6 +146,10 @@ static int qemu_vfio_pci_init_bar(QEMUVFIOState *s, int index, Error **errp)
error_setg_errno(errp, errno, "Failed to get BAR region info");
return -errno;
}
+ barname = g_strdup_printf("bar[%d]", index);
+ trace_qemu_vfio_region_info(barname, s->bar_region_info[index].offset,
+ s->bar_region_info[index].size,
+ s->bar_region_info[index].cap_offset);
return 0;
}
@@ -416,6 +421,9 @@ static int qemu_vfio_init_pci(QEMUVFIOState *s, const char *device,
ret = -errno;
goto fail;
}
+ trace_qemu_vfio_region_info("config", s->config_region_info.offset,
+ s->config_region_info.size,
+ s->config_region_info.cap_offset);
for (i = 0; i < ARRAY_SIZE(s->bar_region_info); i++) {
ret = qemu_vfio_pci_init_bar(s, i, errp);