vdpa/ifc: add log for config space of virtio block

Add some log of virtio blk device config space information
at vDPA launch before QEMU connects.

Signed-off-by: Andy Pei <andy.pei@intel.com>
Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>

diff --git a/drivers/vdpa/ifc/ifcvf_vdpa.c b/drivers/vdpa/ifc/ifcvf_vdpa.c
index f4c6198ef7e0b17ea9054bd937eb37794efdbe3a..30850b0b348a62516e59505af85b652674ad194e 100644 (file)
--- a/drivers/vdpa/ifc/ifcvf_vdpa.c
+++ b/drivers/vdpa/ifc/ifcvf_vdpa.c
@@ -1387,6 +1387,9 @@ ifcvf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
        struct rte_kvargs *kvlist = NULL;
        int ret = 0;
        int16_t device_id;
+       uint64_t capacity = 0;
+       uint8_t *byte;
+       uint32_t i;
 
        if (rte_eal_process_type() != RTE_PROC_PRIMARY)
                return 0;
@@ -1453,6 +1456,37 @@ ifcvf_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
                internal->features = features &
                                        ~(1ULL << VIRTIO_F_IOMMU_PLATFORM);
                internal->features |= dev_info[IFCVF_BLK].features;
+
+               /* cannot read 64-bit register in one attempt,
+                * so read byte by byte.
+                */
+               for (i = 0; i < sizeof(internal->hw.blk_cfg->capacity); i++) {
+                       byte = (uint8_t *)&internal->hw.blk_cfg->capacity + i;
+                       capacity |= (uint64_t)*byte << (i * 8);
+               }
+               /* The capacity is number of sectors in 512-byte.
+                * So right shift 1 bit  we get in K,
+                * another right shift 10 bits we get in M,
+                * right shift 10 more bits, we get in G.
+                * To show capacity in G, we right shift 21 bits in total.
+                */
+               DRV_LOG(DEBUG, "capacity  : %"PRIu64"G", capacity >> 21);
+
+               DRV_LOG(DEBUG, "size_max  : 0x%08x",
+                       internal->hw.blk_cfg->size_max);
+               DRV_LOG(DEBUG, "seg_max   : 0x%08x",
+                       internal->hw.blk_cfg->seg_max);
+               DRV_LOG(DEBUG, "blk_size  : 0x%08x",
+                       internal->hw.blk_cfg->blk_size);
+               DRV_LOG(DEBUG, "geometry");
+               DRV_LOG(DEBUG, "    cylinders: %u",
+                       internal->hw.blk_cfg->geometry.cylinders);
+               DRV_LOG(DEBUG, "    heads    : %u",
+                       internal->hw.blk_cfg->geometry.heads);
+               DRV_LOG(DEBUG, "    sectors  : %u",
+                       internal->hw.blk_cfg->geometry.sectors);
+               DRV_LOG(DEBUG, "num_queues: 0x%08x",
+                       internal->hw.blk_cfg->num_queues);
        }
 
        list->internal = internal;