> -----Original Message-----
> From: Pei, Andy <andy....@intel.com>
> Sent: Monday, May 23, 2022 5:35 PM
> To: dev@dpdk.org
> Cc: Xia, Chenbo <chenbo....@intel.com>; maxime.coque...@redhat.com; Cao,
> Gang <gang....@intel.com>; Liu, Changpeng <changpeng....@intel.com>; Xu,
> Rosen <rosen...@intel.com>; Xiao, QimaiX <qimaix.x...@intel.com>
> Subject: [PATCH v9 11/13] vdpa/ifc: add log for config space of virtio blk
>
> 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 | 34 ++++++++++++++++++++++++++++++++++
> 1 file changed, 34 insertions(+)
>
> diff --git a/drivers/vdpa/ifc/ifcvf_vdpa.c b/drivers/vdpa/ifc/ifcvf_vdpa.c
> index 1c5746a..80d6261 100644
> --- a/drivers/vdpa/ifc/ifcvf_vdpa.c
> +++ b/drivers/vdpa/ifc/ifcvf_vdpa.c
> @@ -1382,6 +1382,9 @@ 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;
> @@ -1448,6 +1451,37 @@ 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);
> + }
> + /* 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;
> --
> 1.8.3.1
Reviewed-by: Chenbo Xia <chenbo....@intel.com>
