Merge remote-tracking branch 'remotes/stefanha-gitlab/tags/block-pull-request' into...

[mirror_qemu.git] / util / vfio-helpers.c

diff --git a/util/vfio-helpers.c b/util/vfio-helpers.c
index 2bec48e1635fc7bfc544a4f38a4261293d5fdadb..97dfa3fd57cc1eac43e308551ee59275740d730e 100644 (file)
--- 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;
 }
@@ -158,10 +163,13 @@ void *qemu_vfio_pci_map_bar(QEMUVFIOState *s, int index,
                             Error **errp)
 {
     void *p;
+    assert(QEMU_IS_ALIGNED(offset, qemu_real_host_page_size));
     assert_bar_index_valid(s, index);
     p = mmap(NULL, MIN(size, s->bar_region_info[index].size - offset),
              prot, MAP_SHARED,
              s->device, s->bar_region_info[index].offset + offset);
+    trace_qemu_vfio_pci_map_bar(index, s->bar_region_info[index].offset ,
+                                size, offset, p);
     if (p == MAP_FAILED) {
         error_setg_errno(errp, errno, "Failed to map BAR region");
         p = NULL;
@@ -228,6 +236,10 @@ static int qemu_vfio_pci_read_config(QEMUVFIOState *s, void *buf,
 {
     int ret;
 
+    trace_qemu_vfio_pci_read_config(buf, ofs, size,
+                                    s->config_region_info.offset,
+                                    s->config_region_info.size);
+    assert(QEMU_IS_ALIGNED(s->config_region_info.offset + ofs, size));
     do {
         ret = pread(s->device, buf, size, s->config_region_info.offset + ofs);
     } while (ret == -1 && errno == EINTR);
@@ -238,6 +250,10 @@ static int qemu_vfio_pci_write_config(QEMUVFIOState *s, void *buf, int size, int
 {
     int ret;
 
+    trace_qemu_vfio_pci_write_config(buf, ofs, size,
+                                     s->config_region_info.offset,
+                                     s->config_region_info.size);
+    assert(QEMU_IS_ALIGNED(s->config_region_info.offset + ofs, size));
     do {
         ret = pwrite(s->device, buf, size, s->config_region_info.offset + ofs);
     } while (ret == -1 && errno == EINTR);
@@ -301,7 +317,7 @@ static int qemu_vfio_init_pci(QEMUVFIOState *s, const char *device,
     }
 
     if (!ioctl(s->container, VFIO_CHECK_EXTENSION, VFIO_TYPE1_IOMMU)) {
-        error_setg_errno(errp, errno, "VFIO IOMMU check failed");
+        error_setg_errno(errp, errno, "VFIO IOMMU Type1 is not supported");
         ret = -EINVAL;
         goto fail_container;
     }
@@ -409,6 +425,9 @@ 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);
@@ -516,23 +535,12 @@ QEMUVFIOState *qemu_vfio_open_pci(const char *device, Error **errp)
     return s;
 }
 
-static void qemu_vfio_dump_mapping(IOVAMapping *m)
-{
-    if (QEMU_VFIO_DEBUG) {
-        printf("  vfio mapping %p %" PRIx64 " to %" PRIx64 "\n", m->host,
-               (uint64_t)m->size, (uint64_t)m->iova);
-    }
-}
-
 static void qemu_vfio_dump_mappings(QEMUVFIOState *s)
 {
-    int i;
-
-    if (QEMU_VFIO_DEBUG) {
-        printf("vfio mappings\n");
-        for (i = 0; i < s->nr_mappings; ++i) {
-            qemu_vfio_dump_mapping(&s->mappings[i]);
-        }
+    for (int i = 0; i < s->nr_mappings; ++i) {
+        trace_qemu_vfio_dump_mapping(s->mappings[i].host,
+                                     s->mappings[i].iova,
+                                     s->mappings[i].size);
     }
 }
 
@@ -622,7 +630,7 @@ static int qemu_vfio_do_mapping(QEMUVFIOState *s, void *host, size_t size,
         .vaddr = (uintptr_t)host,
         .size = size,
     };
-    trace_qemu_vfio_do_mapping(s, host, size, iova);
+    trace_qemu_vfio_do_mapping(s, host, iova, size);
 
     if (ioctl(s->container, VFIO_IOMMU_MAP_DMA, &dma_map)) {
         error_report("VFIO_MAP_DMA failed: %s", strerror(errno));
@@ -778,6 +786,7 @@ int qemu_vfio_dma_map(QEMUVFIOState *s, void *host, size_t size,
             }
         }
     }
+    trace_qemu_vfio_dma_mapped(s, host, iova0, size);
     if (iova) {
         *iova = iova0;
     }