[PATCH v3 09/15] vdpa/ifc: add some log at VDPA launch before qemu connect

[Andy Pei]

Add some log of virtio blk device config space information
at VDPA launch before qemu connects.

Signed-off-by: Andy Pei <andy....@intel.com>
---
 drivers/vdpa/ifc/ifcvf_vdpa.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/drivers/vdpa/ifc/ifcvf_vdpa.c b/drivers/vdpa/ifc/ifcvf_vdpa.c
index 24ae27b..3c4e5f6 100644
--- a/drivers/vdpa/ifc/ifcvf_vdpa.c
+++ b/drivers/vdpa/ifc/ifcvf_vdpa.c
@@ -1436,6 +1436,9 @@ struct rte_vdpa_dev_info dev_info[] = {
        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;
@@ -1502,6 +1505,31 @@ struct rte_vdpa_dev_info dev_info[] = {
                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);
+               }
+               DRV_LOG(INFO, "capacity  : %"PRIu64"G", capacity >> 21);
+
+               DRV_LOG(INFO, "size_max  : 0x%08x",
+                       internal->hw.blk_cfg->size_max);
+               DRV_LOG(INFO, "seg_max   : 0x%08x",
+                       internal->hw.blk_cfg->seg_max);
+               DRV_LOG(INFO, "blk_size  : 0x%08x",
+                       internal->hw.blk_cfg->blk_size);
+               DRV_LOG(INFO, "geometry");
+               DRV_LOG(INFO, "    cylinders: %u",
+                       internal->hw.blk_cfg->geometry.cylinders);
+               DRV_LOG(INFO, "    heads    : %u",
+                       internal->hw.blk_cfg->geometry.heads);
+               DRV_LOG(INFO, "    sectors  : %u",
+                       internal->hw.blk_cfg->geometry.sectors);
+               DRV_LOG(INFO, "num_queues: 0x%08x",
+                       internal->hw.blk_cfg->num_queues);
        }
 
        list->internal = internal;
-- 
1.8.3.1