This patch adds support for DIX to v3 hw driver.
For this, we build upon support for DIF, most significantly is adding new
DMA map and unmap paths.
Some pre-existing macro precedence issues are also tidied. They were
detected by checkpatch --strict.
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
#define HISI_SAS_COMMAND_TABLE_SZ (sizeof(union hisi_sas_command_table))
#define hisi_sas_status_buf_addr(buf) \
- (buf + offsetof(struct hisi_sas_slot_buf_table, status_buffer))
-#define hisi_sas_status_buf_addr_mem(slot) hisi_sas_status_buf_addr(slot->buf)
+ ((buf) + offsetof(struct hisi_sas_slot_buf_table, status_buffer))
+#define hisi_sas_status_buf_addr_mem(slot) hisi_sas_status_buf_addr((slot)->buf)
#define hisi_sas_status_buf_addr_dma(slot) \
- hisi_sas_status_buf_addr(slot->buf_dma)
+ hisi_sas_status_buf_addr((slot)->buf_dma)
#define hisi_sas_cmd_hdr_addr(buf) \
- (buf + offsetof(struct hisi_sas_slot_buf_table, command_header))
-#define hisi_sas_cmd_hdr_addr_mem(slot) hisi_sas_cmd_hdr_addr(slot->buf)
-#define hisi_sas_cmd_hdr_addr_dma(slot) hisi_sas_cmd_hdr_addr(slot->buf_dma)
+ ((buf) + offsetof(struct hisi_sas_slot_buf_table, command_header))
+#define hisi_sas_cmd_hdr_addr_mem(slot) hisi_sas_cmd_hdr_addr((slot)->buf)
+#define hisi_sas_cmd_hdr_addr_dma(slot) hisi_sas_cmd_hdr_addr((slot)->buf_dma)
#define hisi_sas_sge_addr(buf) \
- (buf + offsetof(struct hisi_sas_slot_buf_table, sge_page))
-#define hisi_sas_sge_addr_mem(slot) hisi_sas_sge_addr(slot->buf)
-#define hisi_sas_sge_addr_dma(slot) hisi_sas_sge_addr(slot->buf_dma)
+ ((buf) + offsetof(struct hisi_sas_slot_buf_table, sge_page))
+#define hisi_sas_sge_addr_mem(slot) hisi_sas_sge_addr((slot)->buf)
+#define hisi_sas_sge_addr_dma(slot) hisi_sas_sge_addr((slot)->buf_dma)
+
+#define hisi_sas_sge_dif_addr(buf) \
+ ((buf) + offsetof(struct hisi_sas_slot_dif_buf_table, sge_dif_page))
+#define hisi_sas_sge_dif_addr_mem(slot) hisi_sas_sge_dif_addr((slot)->buf)
+#define hisi_sas_sge_dif_addr_dma(slot) hisi_sas_sge_dif_addr((slot)->buf_dma)
#define HISI_SAS_MAX_SSP_RESP_SZ (sizeof(struct ssp_frame_hdr) + 1024)
#define HISI_SAS_MAX_SMP_RESP_SZ 1028
SHOST_DIF_TYPE2_PROTECTION | \
SHOST_DIF_TYPE3_PROTECTION)
-#define HISI_SAS_PROT_MASK (HISI_SAS_DIF_PROT_MASK)
+#define HISI_SAS_DIX_PROT_MASK (SHOST_DIX_TYPE1_PROTECTION | \
+ SHOST_DIX_TYPE2_PROTECTION | \
+ SHOST_DIX_TYPE3_PROTECTION)
+
+#define HISI_SAS_PROT_MASK (HISI_SAS_DIF_PROT_MASK | HISI_SAS_DIX_PROT_MASK)
#define HISI_SAS_WAIT_PHYUP_TIMEOUT 20
struct sas_task *task;
struct hisi_sas_port *port;
u64 n_elem;
+ u64 n_elem_dif;
int dlvry_queue;
int dlvry_queue_slot;
int cmplt_queue;
struct hisi_sas_sge sge[HISI_SAS_SGE_PAGE_CNT];
} __aligned(16);
+#define HISI_SAS_SGE_DIF_PAGE_CNT SG_CHUNK_SIZE
+struct hisi_sas_sge_dif_page {
+ struct hisi_sas_sge sge[HISI_SAS_SGE_DIF_PAGE_CNT];
+} __aligned(16);
+
struct hisi_sas_command_table_ssp {
struct ssp_frame_hdr hdr;
union {
struct hisi_sas_sge_page sge_page;
};
+struct hisi_sas_slot_dif_buf_table {
+ struct hisi_sas_slot_buf_table slot_buf;
+ struct hisi_sas_sge_dif_page sge_dif_page;
+};
+
extern struct scsi_transport_template *hisi_sas_stt;
extern bool hisi_sas_debugfs_enable;
task->lldd_task = NULL;
- if (!sas_protocol_ata(task->task_proto))
+ if (!sas_protocol_ata(task->task_proto)) {
+ struct sas_ssp_task *ssp_task = &task->ssp_task;
+ struct scsi_cmnd *scsi_cmnd = ssp_task->cmd;
+
if (slot->n_elem)
dma_unmap_sg(dev, task->scatter,
task->num_scatter,
task->data_dir);
+ if (slot->n_elem_dif)
+ dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd),
+ scsi_prot_sg_count(scsi_cmnd),
+ task->data_dir);
+ }
}
return rc;
}
+static void hisi_sas_dif_dma_unmap(struct hisi_hba *hisi_hba,
+ struct sas_task *task, int n_elem_dif)
+{
+ struct device *dev = hisi_hba->dev;
+
+ if (n_elem_dif) {
+ struct sas_ssp_task *ssp_task = &task->ssp_task;
+ struct scsi_cmnd *scsi_cmnd = ssp_task->cmd;
+
+ dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd),
+ scsi_prot_sg_count(scsi_cmnd),
+ task->data_dir);
+ }
+}
+
+static int hisi_sas_dif_dma_map(struct hisi_hba *hisi_hba,
+ int *n_elem_dif, struct sas_task *task)
+{
+ struct device *dev = hisi_hba->dev;
+ struct sas_ssp_task *ssp_task;
+ struct scsi_cmnd *scsi_cmnd;
+ int rc;
+
+ if (task->num_scatter) {
+ ssp_task = &task->ssp_task;
+ scsi_cmnd = ssp_task->cmd;
+
+ if (scsi_prot_sg_count(scsi_cmnd)) {
+ *n_elem_dif = dma_map_sg(dev,
+ scsi_prot_sglist(scsi_cmnd),
+ scsi_prot_sg_count(scsi_cmnd),
+ task->data_dir);
+
+ if (!*n_elem_dif)
+ return -ENOMEM;
+
+ if (*n_elem_dif > HISI_SAS_SGE_DIF_PAGE_CNT) {
+ dev_err(dev, "task prep: n_elem_dif(%d) too large\n",
+ *n_elem_dif);
+ rc = -EINVAL;
+ goto err_out_dif_dma_unmap;
+ }
+ }
+ }
+
+ return 0;
+
+err_out_dif_dma_unmap:
+ dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd),
+ scsi_prot_sg_count(scsi_cmnd), task->data_dir);
+ return rc;
+}
+
static int hisi_sas_task_prep(struct sas_task *task,
struct hisi_sas_dq **dq_pointer,
bool is_tmf, struct hisi_sas_tmf_task *tmf,
struct asd_sas_port *sas_port = device->port;
struct device *dev = hisi_hba->dev;
int dlvry_queue_slot, dlvry_queue, rc, slot_idx;
- int n_elem = 0, n_elem_req = 0, n_elem_resp = 0;
+ int n_elem = 0, n_elem_dif = 0, n_elem_req = 0, n_elem_resp = 0;
struct hisi_sas_dq *dq;
unsigned long flags;
int wr_q_index;
if (rc < 0)
goto prep_out;
+ if (!sas_protocol_ata(task->task_proto)) {
+ rc = hisi_sas_dif_dma_map(hisi_hba, &n_elem_dif, task);
+ if (rc < 0)
+ goto err_out_dma_unmap;
+ }
+
if (hisi_hba->hw->slot_index_alloc)
rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device);
else {
rc = hisi_sas_slot_index_alloc(hisi_hba, scsi_cmnd);
}
if (rc < 0)
- goto err_out_dma_unmap;
+ goto err_out_dif_dma_unmap;
slot_idx = rc;
slot = &hisi_hba->slot_info[slot_idx];
dlvry_queue_slot = wr_q_index;
slot->n_elem = n_elem;
+ slot->n_elem_dif = n_elem_dif;
slot->dlvry_queue = dlvry_queue;
slot->dlvry_queue_slot = dlvry_queue_slot;
cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue];
err_out_tag:
hisi_sas_slot_index_free(hisi_hba, slot_idx);
+err_out_dif_dma_unmap:
+ if (!sas_protocol_ata(task->task_proto))
+ hisi_sas_dif_dma_unmap(hisi_hba, task, n_elem_dif);
err_out_dma_unmap:
hisi_sas_dma_unmap(hisi_hba, task, n_elem,
n_elem_req, n_elem_resp);
/* roundup to avoid overly large block size */
max_command_entries_ru = roundup(max_command_entries, 64);
- sz_slot_buf_ru = roundup(sizeof(struct hisi_sas_slot_buf_table), 64);
+ if (hisi_hba->prot_mask & HISI_SAS_DIX_PROT_MASK)
+ sz_slot_buf_ru = sizeof(struct hisi_sas_slot_dif_buf_table);
+ else
+ sz_slot_buf_ru = sizeof(struct hisi_sas_slot_buf_table);
+ sz_slot_buf_ru = roundup(sz_slot_buf_ru, 64);
s = lcm(max_command_entries_ru, sz_slot_buf_ru);
blk_cnt = (max_command_entries_ru * sz_slot_buf_ru) / s;
slots_per_blk = s / sz_slot_buf_ru;
+
for (i = 0; i < blk_cnt; i++) {
- struct hisi_sas_slot_buf_table *buf;
- dma_addr_t buf_dma;
int slot_index = i * slots_per_blk;
+ dma_addr_t buf_dma;
+ void *buf;
- buf = dmam_alloc_coherent(dev, s, &buf_dma, GFP_KERNEL);
+ buf = dmam_alloc_coherent(dev, s, &buf_dma,
+ GFP_KERNEL | __GFP_ZERO);
if (!buf)
goto err_out;
- memset(buf, 0, s);
for (j = 0; j < slots_per_blk; j++, slot_index++) {
struct hisi_sas_slot *slot;
slot->buf_dma = buf_dma;
slot->idx = slot_index;
- buf++;
- buf_dma += sizeof(*buf);
+ buf += sz_slot_buf_ru;
+ buf_dma += sz_slot_buf_ru;
}
}
#define USR_DATA_BLOCK_SZ_OFF 20
#define USR_DATA_BLOCK_SZ_MSK (0x3 << USR_DATA_BLOCK_SZ_OFF)
#define T10_CHK_MSK_OFF 16
+#define T10_CHK_REF_TAG_MSK (0xf0 << T10_CHK_MSK_OFF)
+#define T10_CHK_APP_TAG_MSK (0xc << T10_CHK_MSK_OFF)
static bool hisi_sas_intr_conv;
MODULE_PARM_DESC(intr_conv, "interrupt converge enable (0-1)");
hdr->prd_table_addr = cpu_to_le64(hisi_sas_sge_addr_dma(slot));
- hdr->sg_len = cpu_to_le32(n_elem << CMD_HDR_DATA_SGL_LEN_OFF);
+ hdr->sg_len |= cpu_to_le32(n_elem << CMD_HDR_DATA_SGL_LEN_OFF);
+}
+
+static void prep_prd_sge_dif_v3_hw(struct hisi_hba *hisi_hba,
+ struct hisi_sas_slot *slot,
+ struct hisi_sas_cmd_hdr *hdr,
+ struct scatterlist *scatter,
+ int n_elem)
+{
+ struct hisi_sas_sge_dif_page *sge_dif_page;
+ struct scatterlist *sg;
+ int i;
+
+ sge_dif_page = hisi_sas_sge_dif_addr_mem(slot);
+
+ for_each_sg(scatter, sg, n_elem, i) {
+ struct hisi_sas_sge *entry = &sge_dif_page->sge[i];
+
+ entry->addr = cpu_to_le64(sg_dma_address(sg));
+ entry->page_ctrl_0 = 0;
+ entry->page_ctrl_1 = 0;
+ entry->data_len = cpu_to_le32(sg_dma_len(sg));
+ entry->data_off = 0;
+ }
+
+ hdr->dif_prd_table_addr =
+ cpu_to_le64(hisi_sas_sge_dif_addr_dma(slot));
+
+ hdr->sg_len |= cpu_to_le32(n_elem << CMD_HDR_DIF_SGL_LEN_OFF);
}
static u32 get_prot_chk_msk_v3_hw(struct scsi_cmnd *scsi_cmnd)
{
unsigned char prot_flags = scsi_cmnd->prot_flags;
- if (prot_flags & SCSI_PROT_TRANSFER_PI) {
- if (prot_flags & SCSI_PROT_REF_CHECK)
- return 0xc << 16;
- return 0xfc << 16;
- }
- return 0;
+ if (prot_flags & SCSI_PROT_REF_CHECK)
+ return T10_CHK_APP_TAG_MSK;
+ return T10_CHK_REF_TAG_MSK | T10_CHK_APP_TAG_MSK;
}
static void fill_prot_v3_hw(struct scsi_cmnd *scsi_cmnd,
u32 lbrt_chk_val = t10_pi_ref_tag(scsi_cmnd->request);
switch (prot_op) {
+ case SCSI_PROT_READ_INSERT:
+ prot->dw0 |= T10_INSRT_EN_MSK;
+ prot->lbrtgv = lbrt_chk_val;
+ break;
case SCSI_PROT_READ_STRIP:
prot->dw0 |= (T10_RMV_EN_MSK | T10_CHK_EN_MSK);
prot->lbrtcv = lbrt_chk_val;
prot->dw4 |= get_prot_chk_msk_v3_hw(scsi_cmnd);
break;
+ case SCSI_PROT_READ_PASS:
+ prot->dw0 |= T10_CHK_EN_MSK;
+ prot->lbrtcv = lbrt_chk_val;
+ prot->dw4 |= get_prot_chk_msk_v3_hw(scsi_cmnd);
+ break;
case SCSI_PROT_WRITE_INSERT:
prot->dw0 |= T10_INSRT_EN_MSK;
prot->lbrtgv = lbrt_chk_val;
break;
+ case SCSI_PROT_WRITE_STRIP:
+ prot->dw0 |= (T10_RMV_EN_MSK | T10_CHK_EN_MSK);
+ prot->lbrtcv = lbrt_chk_val;
+ break;
+ case SCSI_PROT_WRITE_PASS:
+ prot->dw0 |= T10_CHK_EN_MSK;
+ prot->lbrtcv = lbrt_chk_val;
+ prot->dw4 |= get_prot_chk_msk_v3_hw(scsi_cmnd);
+ break;
default:
WARN(1, "prot_op(0x%x) is not valid\n", prot_op);
break;
hdr->dw2 = cpu_to_le32(dw2);
hdr->transfer_tags = cpu_to_le32(slot->idx);
- if (has_data)
+ if (has_data) {
prep_prd_sge_v3_hw(hisi_hba, slot, hdr, task->scatter,
- slot->n_elem);
+ slot->n_elem);
+
+ if (scsi_prot_sg_count(scsi_cmnd))
+ prep_prd_sge_dif_v3_hw(hisi_hba, slot, hdr,
+ scsi_prot_sglist(scsi_cmnd),
+ slot->n_elem_dif);
+ }
hdr->cmd_table_addr = cpu_to_le64(hisi_sas_cmd_hdr_addr_dma(slot));
hdr->sts_buffer_addr = cpu_to_le64(hisi_sas_status_buf_addr_dma(slot));
fill_prot_v3_hw(scsi_cmnd, &prot);
memcpy(buf_cmd_prot, &prot,
sizeof(struct hisi_sas_protect_iu_v3_hw));
-
/*
* For READ, we need length of info read to memory, while for
* WRITE we need length of data written to the disk.
*/
- if (prot_op == SCSI_PROT_WRITE_INSERT) {
+ if (prot_op == SCSI_PROT_WRITE_INSERT ||
+ prot_op == SCSI_PROT_READ_INSERT ||
+ prot_op == SCSI_PROT_WRITE_PASS ||
+ prot_op == SCSI_PROT_READ_PASS) {
unsigned int interval = scsi_prot_interval(scsi_cmnd);
unsigned int ilog2_interval = ilog2(interval);
len = (task->total_xfer_len >> ilog2_interval) * 8;
}
-
}
hdr->dw1 = cpu_to_le32(dw1);
.bios_param = sas_bios_param,
.this_id = -1,
.sg_tablesize = HISI_SAS_SGE_PAGE_CNT,
+ .sg_prot_tablesize = HISI_SAS_SGE_PAGE_CNT,
.max_sectors = SCSI_DEFAULT_MAX_SECTORS,
.eh_device_reset_handler = sas_eh_device_reset_handler,
.eh_target_reset_handler = sas_eh_target_reset_handler,
dev_info(dev, "Registering for DIF/DIX prot_mask=0x%x\n",
prot_mask);
scsi_host_set_prot(hisi_hba->shost, prot_mask);
+ if (hisi_hba->prot_mask & HISI_SAS_DIX_PROT_MASK)
+ scsi_host_set_guard(hisi_hba->shost,
+ SHOST_DIX_GUARD_CRC);
}
scsi_scan_host(shost);
projects / linux-2.6-block.git / commitdiff