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scsi: smartpqi: allow for larger raid maps
Reviewed-by: Murthy Bhat <murthy.bhat@microsemi.com> Reviewed-by: Mahesh Rajashekhara <mahesh.rajashekhara@microsemi.com> Reviewed-by: Dave Carroll <david.carroll@microsemi.com> Reviewed-by: Scott Teel <scott.teel@microsemi.com> Reviewed-by: Kevin Barnett <kevin.barnett@microsemi.com> Signed-off-by: Ajish Koshy <ajish.koshy@microsemi.com> Signed-off-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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@ -1115,8 +1115,6 @@ static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info,
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char *err_msg;
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u32 raid_map_size;
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u32 r5or6_blocks_per_row;
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unsigned int num_phys_disks;
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unsigned int num_raid_map_entries;
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raid_map_size = get_unaligned_le32(&raid_map->structure_size);
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@ -1125,22 +1123,6 @@ static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info,
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goto bad_raid_map;
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}
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if (raid_map_size > sizeof(*raid_map)) {
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err_msg = "RAID map too large";
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goto bad_raid_map;
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}
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num_phys_disks = get_unaligned_le16(&raid_map->layout_map_count) *
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(get_unaligned_le16(&raid_map->data_disks_per_row) +
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get_unaligned_le16(&raid_map->metadata_disks_per_row));
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num_raid_map_entries = num_phys_disks *
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get_unaligned_le16(&raid_map->row_cnt);
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if (num_raid_map_entries > RAID_MAP_MAX_ENTRIES) {
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err_msg = "invalid number of map entries in RAID map";
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goto bad_raid_map;
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}
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if (device->raid_level == SA_RAID_1) {
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if (get_unaligned_le16(&raid_map->layout_map_count) != 2) {
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err_msg = "invalid RAID-1 map";
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@ -1179,28 +1161,46 @@ static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info,
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struct pqi_scsi_dev *device)
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{
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int rc;
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enum dma_data_direction dir;
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struct pqi_raid_path_request request;
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u32 raid_map_size;
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struct raid_map *raid_map;
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raid_map = kmalloc(sizeof(*raid_map), GFP_KERNEL);
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if (!raid_map)
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return -ENOMEM;
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rc = pqi_build_raid_path_request(ctrl_info, &request,
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CISS_GET_RAID_MAP, device->scsi3addr, raid_map,
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sizeof(*raid_map), 0, &dir);
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if (rc)
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goto error;
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rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
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NULL, NO_TIMEOUT);
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pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
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rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP,
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device->scsi3addr, raid_map, sizeof(*raid_map),
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0, NULL, NO_TIMEOUT);
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if (rc)
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goto error;
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raid_map_size = get_unaligned_le32(&raid_map->structure_size);
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if (raid_map_size > sizeof(*raid_map)) {
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kfree(raid_map);
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raid_map = kmalloc(raid_map_size, GFP_KERNEL);
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if (!raid_map)
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return -ENOMEM;
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rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP,
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device->scsi3addr, raid_map, raid_map_size,
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0, NULL, NO_TIMEOUT);
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if (rc)
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goto error;
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if (get_unaligned_le32(&raid_map->structure_size)
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!= raid_map_size) {
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dev_warn(&ctrl_info->pci_dev->dev,
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"Requested %d bytes, received %d bytes",
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raid_map_size,
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get_unaligned_le32(&raid_map->structure_size));
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goto error;
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}
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}
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rc = pqi_validate_raid_map(ctrl_info, device, raid_map);
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if (rc)
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goto error;
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@ -2459,9 +2459,6 @@ static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
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(map_row * total_disks_per_row) + first_column;
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}
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if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES))
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return PQI_RAID_BYPASS_INELIGIBLE;
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aio_handle = raid_map->disk_data[map_index].aio_handle;
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disk_block = get_unaligned_le64(&raid_map->disk_starting_blk) +
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first_row * strip_size +
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