[PATCH 06/16] util/vfio-helpers: Trace PCI BAR region info

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

For debug purpose, trace BAR regions info.

Reviewed-by: Fam Zheng <fam@euphon.net>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 util/vfio-helpers.c | 8 ++++++++
 util/trace-events   | 1 +
 2 files changed, 9 insertions(+)

diff --git a/util/vfio-helpers.c b/util/vfio-helpers.c
index ac9cc20ce29..4204ce55445 100644
--- a/util/vfio-helpers.c
+++ b/util/vfio-helpers.c
@@ -137,6 +137,7 @@ 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,
@@ -146,6 +147,10 @@ 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;
 }
@@ -440,6 +445,9 @@ 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);
diff --git a/util/trace-events b/util/trace-events
index b697d2d5429..a6a541270b7 100644
--- a/util/trace-events
+++ b/util/trace-events
@@ -88,3 +88,4 @@ qemu_vfio_dma_unmap(void *s, void *host) "s %p host %p"
 qemu_vfio_iommu_iova_pgsizes(uint64_t iova_pgsizes) "iommu page size bitmask: 0x%08"PRIx64
 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 %d (region ofs 0x%"PRIx64" size %"PRId64")"
 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 %d (region ofs 0x%"PRIx64" size %"PRId64")"
+qemu_vfio_region_info(const char *desc, uint64_t offset, uint64_t size, uint32_t cap_offset) "region '%s' ofs 0x%"PRIx64" size %"PRId64" cap_ofs %"PRId32
-- 
2.26.2