struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
unsigned int cdb_length, struct pqi_queue_group *queue_group,
struct pqi_encryption_info *encryption_info, bool raid_bypass);
+static int pqi_aio_submit_r1_write_io(struct pqi_ctrl_info *ctrl_info,
+ struct scsi_cmnd *scmd, struct pqi_queue_group *queue_group,
+ struct pqi_encryption_info *encryption_info, struct pqi_scsi_dev *device,
+ struct pqi_scsi_dev_raid_map_data *rmd);
static int pqi_aio_submit_r56_write_io(struct pqi_ctrl_info *ctrl_info,
struct scsi_cmnd *scmd, struct pqi_queue_group *queue_group,
struct pqi_encryption_info *encryption_info, struct pqi_scsi_dev *device,
"RAID-1(1+0)",
"RAID-5",
"RAID-5+1",
- "RAID-ADG",
- "RAID-1(ADM)",
+ "RAID-6",
+ "RAID-1(Triple)",
};
static char *pqi_raid_level_to_string(u8 raid_level)
#define SA_RAID_5 3 /* also used for RAID 50 */
#define SA_RAID_51 4
#define SA_RAID_6 5 /* also used for RAID 60 */
-#define SA_RAID_ADM 6 /* also used for RAID 1+0 ADM */
-#define SA_RAID_MAX SA_RAID_ADM
+#define SA_RAID_TRIPLE 6 /* also used for RAID 1+0 Triple */
+#define SA_RAID_MAX SA_RAID_TRIPLE
#define SA_RAID_UNKNOWN 0xff
static inline void pqi_scsi_done(struct scsi_cmnd *scmd)
err_msg = "invalid RAID-1 map";
goto bad_raid_map;
}
- } else if (device->raid_level == SA_RAID_ADM) {
+ } else if (device->raid_level == SA_RAID_TRIPLE) {
if (get_unaligned_le16(&raid_map->layout_map_count) != 3) {
- err_msg = "invalid RAID-1(ADM) map";
+ err_msg = "invalid RAID-1(Triple) map";
goto bad_raid_map;
}
} else if ((device->raid_level == SA_RAID_5 ||
sizeof(existing_device->box));
memcpy(existing_device->phys_connector, new_device->phys_connector,
sizeof(existing_device->phys_connector));
- existing_device->offload_to_mirror = 0;
+ existing_device->next_bypass_group = 0;
kfree(existing_device->raid_map);
existing_device->raid_map = new_device->raid_map;
existing_device->raid_bypass_configured =
case SA_RAID_0:
break;
case SA_RAID_1:
- if (rmd->is_write)
+ case SA_RAID_TRIPLE:
+ if (rmd->is_write && !ctrl_info->enable_r1_writes)
is_supported = false;
break;
case SA_RAID_5:
if (rmd->is_write && !ctrl_info->enable_r6_writes)
is_supported = false;
break;
- case SA_RAID_ADM:
- if (rmd->is_write)
- is_supported = false;
- break;
default:
is_supported = false;
}
return 0;
}
-static int pqi_calc_aio_raid_adm(struct pqi_scsi_dev_raid_map_data *rmd,
- struct pqi_scsi_dev *device)
-{
- /* RAID ADM */
- /*
- * Handles N-way mirrors (R1-ADM) and R10 with # of drives
- * divisible by 3.
- */
- rmd->offload_to_mirror = device->offload_to_mirror;
-
- if (rmd->offload_to_mirror == 0) {
- /* use physical disk in the first mirrored group. */
- rmd->map_index %= rmd->data_disks_per_row;
- } else {
- do {
- /*
- * Determine mirror group that map_index
- * indicates.
- */
- rmd->current_group =
- rmd->map_index / rmd->data_disks_per_row;
-
- if (rmd->offload_to_mirror !=
- rmd->current_group) {
- if (rmd->current_group <
- rmd->layout_map_count - 1) {
- /*
- * Select raid index from
- * next group.
- */
- rmd->map_index += rmd->data_disks_per_row;
- rmd->current_group++;
- } else {
- /*
- * Select raid index from first
- * group.
- */
- rmd->map_index %= rmd->data_disks_per_row;
- rmd->current_group = 0;
- }
- }
- } while (rmd->offload_to_mirror != rmd->current_group);
- }
-
- /* Set mirror group to use next time. */
- rmd->offload_to_mirror =
- (rmd->offload_to_mirror >= rmd->layout_map_count - 1) ?
- 0 : rmd->offload_to_mirror + 1;
- device->offload_to_mirror = rmd->offload_to_mirror;
- /*
- * Avoid direct use of device->offload_to_mirror within this
- * function since multiple threads might simultaneously
- * increment it beyond the range of device->layout_map_count -1.
- */
-
- return 0;
-}
-
static int pqi_calc_aio_r5_or_r6(struct pqi_scsi_dev_raid_map_data *rmd,
struct raid_map *raid_map)
{
}
}
+static void pqi_calc_aio_r1_nexus(struct raid_map *raid_map,
+ struct pqi_scsi_dev_raid_map_data *rmd)
+{
+ u32 index;
+ u32 group;
+
+ group = rmd->map_index / rmd->data_disks_per_row;
+
+ index = rmd->map_index - (group * rmd->data_disks_per_row);
+ rmd->it_nexus[0] = raid_map->disk_data[index].aio_handle;
+ index += rmd->data_disks_per_row;
+ rmd->it_nexus[1] = raid_map->disk_data[index].aio_handle;
+ if (rmd->layout_map_count > 2) {
+ index += rmd->data_disks_per_row;
+ rmd->it_nexus[2] = raid_map->disk_data[index].aio_handle;
+ }
+
+ rmd->num_it_nexus_entries = rmd->layout_map_count;
+}
+
static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
struct pqi_queue_group *queue_group)
{
- struct raid_map *raid_map;
int rc;
+ struct raid_map *raid_map;
+ u32 group;
+ u32 next_bypass_group;
struct pqi_encryption_info *encryption_info_ptr;
struct pqi_encryption_info encryption_info;
struct pqi_scsi_dev_raid_map_data rmd = {0};
if (rc)
return PQI_RAID_BYPASS_INELIGIBLE;
- /* RAID 1 */
- if (device->raid_level == SA_RAID_1) {
- if (device->offload_to_mirror)
- rmd.map_index += rmd.data_disks_per_row;
- device->offload_to_mirror = !device->offload_to_mirror;
- } else if (device->raid_level == SA_RAID_ADM) {
- rc = pqi_calc_aio_raid_adm(&rmd, device);
+ if (device->raid_level == SA_RAID_1 ||
+ device->raid_level == SA_RAID_TRIPLE) {
+ if (rmd.is_write) {
+ pqi_calc_aio_r1_nexus(raid_map, &rmd);
+ } else {
+ group = device->next_bypass_group;
+ next_bypass_group = group + 1;
+ if (next_bypass_group >= rmd.layout_map_count)
+ next_bypass_group = 0;
+ device->next_bypass_group = next_bypass_group;
+ rmd.map_index += group * rmd.data_disks_per_row;
+ }
} else if ((device->raid_level == SA_RAID_5 ||
device->raid_level == SA_RAID_6) &&
(rmd.layout_map_count > 1 || rmd.is_write)) {
return pqi_aio_submit_io(ctrl_info, scmd, rmd.aio_handle,
rmd.cdb, rmd.cdb_length, queue_group,
encryption_info_ptr, true);
+ case SA_RAID_1:
+ case SA_RAID_TRIPLE:
+ return pqi_aio_submit_r1_write_io(ctrl_info, scmd, queue_group,
+ encryption_info_ptr, device, &rmd);
case SA_RAID_5:
case SA_RAID_6:
return pqi_aio_submit_r56_write_io(ctrl_info, scmd, queue_group,
return 0;
}
+static int pqi_build_aio_r1_sg_list(struct pqi_ctrl_info *ctrl_info,
+ struct pqi_aio_r1_path_request *request, struct scsi_cmnd *scmd,
+ struct pqi_io_request *io_request)
+{
+ u16 iu_length;
+ int sg_count;
+ bool chained;
+ unsigned int num_sg_in_iu;
+ struct scatterlist *sg;
+ struct pqi_sg_descriptor *sg_descriptor;
+
+ sg_count = scsi_dma_map(scmd);
+ if (sg_count < 0)
+ return sg_count;
+
+ iu_length = offsetof(struct pqi_aio_r1_path_request, sg_descriptors) -
+ PQI_REQUEST_HEADER_LENGTH;
+ num_sg_in_iu = 0;
+
+ if (sg_count == 0)
+ goto out;
+
+ sg = scsi_sglist(scmd);
+ sg_descriptor = request->sg_descriptors;
+
+ num_sg_in_iu = pqi_build_sg_list(sg_descriptor, sg, sg_count, io_request,
+ ctrl_info->max_sg_per_iu, &chained);
+
+ request->partial = chained;
+ iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
+
+out:
+ put_unaligned_le16(iu_length, &request->header.iu_length);
+ request->num_sg_descriptors = num_sg_in_iu;
+
+ return 0;
+}
+
static int pqi_build_aio_r56_sg_list(struct pqi_ctrl_info *ctrl_info,
struct pqi_aio_r56_path_request *request, struct scsi_cmnd *scmd,
struct pqi_io_request *io_request)
return 0;
}
+static int pqi_aio_submit_r1_write_io(struct pqi_ctrl_info *ctrl_info,
+ struct scsi_cmnd *scmd, struct pqi_queue_group *queue_group,
+ struct pqi_encryption_info *encryption_info, struct pqi_scsi_dev *device,
+ struct pqi_scsi_dev_raid_map_data *rmd)
+
+{
+ int rc;
+ struct pqi_io_request *io_request;
+ struct pqi_aio_r1_path_request *r1_request;
+
+ io_request = pqi_alloc_io_request(ctrl_info);
+ io_request->io_complete_callback = pqi_aio_io_complete;
+ io_request->scmd = scmd;
+ io_request->raid_bypass = true;
+
+ r1_request = io_request->iu;
+ memset(r1_request, 0, offsetof(struct pqi_aio_r1_path_request, sg_descriptors));
+
+ r1_request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_RAID1_IO;
+
+ put_unaligned_le16(*(u16 *)device->scsi3addr & 0x3fff, &r1_request->volume_id);
+ r1_request->num_drives = rmd->num_it_nexus_entries;
+ put_unaligned_le32(rmd->it_nexus[0], &r1_request->it_nexus_1);
+ put_unaligned_le32(rmd->it_nexus[1], &r1_request->it_nexus_2);
+ if (rmd->num_it_nexus_entries == 3)
+ put_unaligned_le32(rmd->it_nexus[2], &r1_request->it_nexus_3);
+
+ put_unaligned_le32(scsi_bufflen(scmd), &r1_request->data_length);
+ r1_request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
+ put_unaligned_le16(io_request->index, &r1_request->request_id);
+ r1_request->error_index = r1_request->request_id;
+ if (rmd->cdb_length > sizeof(r1_request->cdb))
+ rmd->cdb_length = sizeof(r1_request->cdb);
+ r1_request->cdb_length = rmd->cdb_length;
+ memcpy(r1_request->cdb, rmd->cdb, rmd->cdb_length);
+
+ /* The direction is always write. */
+ r1_request->data_direction = SOP_READ_FLAG;
+
+ if (encryption_info) {
+ r1_request->encryption_enable = true;
+ put_unaligned_le16(encryption_info->data_encryption_key_index,
+ &r1_request->data_encryption_key_index);
+ put_unaligned_le32(encryption_info->encrypt_tweak_lower,
+ &r1_request->encrypt_tweak_lower);
+ put_unaligned_le32(encryption_info->encrypt_tweak_upper,
+ &r1_request->encrypt_tweak_upper);
+ }
+
+ rc = pqi_build_aio_r1_sg_list(ctrl_info, r1_request, scmd, io_request);
+ if (rc) {
+ pqi_free_io_request(io_request);
+ return SCSI_MLQUEUE_HOST_BUSY;
+ }
+
+ pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
+
+ return 0;
+}
+
static int pqi_aio_submit_r56_write_io(struct pqi_ctrl_info *ctrl_info,
struct scsi_cmnd *scmd, struct pqi_queue_group *queue_group,
struct pqi_encryption_info *encryption_info, struct pqi_scsi_dev *device,
projects / linux-2.6-microblaze.git / commitdiff