ZAC drives implement a 'ZAC Management In' command template,
which maps onto the ZBC IN command.
Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
---
drivers/ata/libata-eh.c | 1 +
drivers/ata/libata-scsi.c | 157 ++++++++++++++++++++++++++++++++++++++++++
drivers/ata/libata-trace.c | 10 +++
include/linux/ata.h | 5 ++
include/trace/events/libata.h | 1 +
5 files changed, 174 insertions(+)
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index dfe8fdc..4932ce5 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -2502,6 +2502,7 @@ const char *ata_get_cmd_descript(u8 command)
{ ATA_CMD_CFA_WRITE_MULT_NE, "CFA WRITE MULTIPLE WITHOUT ERASE" },
{ ATA_CMD_REQ_SENSE_DATA, "REQUEST SENSE DATA EXT" },
{ ATA_CMD_SANITIZE_DEVICE, "SANITIZE DEVICE" },
+ { ATA_CMD_ZAC_MGMT_IN, "ZAC MANAGEMENT IN" },
{ ATA_CMD_READ_LONG, "READ LONG (with retries)" },
{ ATA_CMD_READ_LONG_ONCE, "READ LONG (without retries)" },
{ ATA_CMD_WRITE_LONG, "WRITE LONG (with retries)" },
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 6d78b4b..3e402a8 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -3318,6 +3318,160 @@ invalid_opcode:
}
/**
+ * ata_scsi_report_zones_complete - convert ATA output
+ * @qc: command structure returning the data
+ *
+ * Convert T-13 little-endian field representation into
+ * T-10 big-endian field representation.
+ * What a mess.
+ */
+static void ata_scsi_report_zones_complete(struct ata_queued_cmd *qc)
+{
+ struct scsi_cmnd *scmd = qc->scsicmd;
+ struct sg_mapping_iter miter;
+ unsigned long flags;
+ unsigned int bytes = 0;
+
+ sg_miter_start(&miter, scsi_sglist(scmd), scsi_sg_count(scmd),
+ SG_MITER_TO_SG | SG_MITER_ATOMIC);
+
+ local_irq_save(flags);
+ while (sg_miter_next(&miter)) {
+ unsigned int offset = 0;
+
+ if (bytes == 0) {
+ char *hdr;
+ u32 list_length;
+ u64 max_lba, opt_lba;
+ u16 same;
+
+ /* Swizzle header */
+ hdr = miter.addr;
+ list_length = get_unaligned_le32(&hdr[0]);
+ same = get_unaligned_le16(&hdr[4]);
+ max_lba = get_unaligned_le64(&hdr[8]);
+ opt_lba = get_unaligned_le64(&hdr[16]);
+ put_unaligned_be32(list_length, &hdr[0]);
+ hdr[4] = same & 0xf;
+ put_unaligned_be64(max_lba, &hdr[8]);
+ put_unaligned_be64(opt_lba, &hdr[16]);
+ offset += 64;
+ bytes += 64;
+ }
+ while (offset < miter.length) {
+ char *rec;
+ u8 cond, type, non_seq, reset;
+ u64 size, start, wp;
+
+ /* Swizzle zone descriptor */
+ rec = miter.addr + offset;
+ type = rec[0] & 0xf;
+ cond = (rec[1] >> 4) & 0xf;
+ non_seq = (rec[1] & 2);
+ reset = (rec[1] & 1);
+ size = get_unaligned_le64(&rec[8]);
+ start = get_unaligned_le64(&rec[16]);
+ wp = get_unaligned_le64(&rec[24]);
+ rec[0] = type;
+ rec[1] = (cond << 4) | non_seq | reset;
+ put_unaligned_be64(size, &rec[8]);
+ put_unaligned_be64(start, &rec[16]);
+ put_unaligned_be64(wp, &rec[24]);
+ WARN_ON(offset + 64 > miter.length);
+ offset += 64;
+ bytes += 64;
+ }
+ }
+ sg_miter_stop(&miter);
+ local_irq_restore(flags);
+
+ ata_scsi_qc_complete(qc);
+}
+
+static unsigned int ata_scsi_zbc_in_xlat(struct ata_queued_cmd *qc)
+{
+ struct ata_taskfile *tf = &qc->tf;
+ struct scsi_cmnd *scmd = qc->scsicmd;
+ const u8 *cdb = scmd->cmnd;
+ u16 sect, fp = (u16)-1;
+ u8 sa, options, bp = 0xff;
+ u64 block;
+ u32 n_block;
+
+ if (unlikely(scmd->cmd_len < 16)) {
+ ata_dev_warn(qc->dev, "invalid cdb length %d\n",
+ scmd->cmd_len);
+ fp = 15;
+ goto invalid_fld;
+ }
+ scsi_16_lba_len(cdb, &block, &n_block);
+ if (n_block != scsi_bufflen(scmd)) {
+ ata_dev_warn(qc->dev, "non-matching transfer count (%d/%d)\n",
+ n_block, scsi_bufflen(scmd));
+ goto invalid_param_len;
+ }
+ sa = cdb[1] & 0x1f;
+ if (sa != ZI_REPORT_ZONES) {
+ ata_dev_warn(qc->dev, "invalid service action %d\n", sa);
+ fp = 1;
+ goto invalid_fld;
+ }
+ /*
+ * ZAC allows only for transfers in 512 byte blocks,
+ * and uses a 16 bit value for the transfer count.
+ */
+ if ((n_block / 512) > 0xffff || n_block < 512 || (n_block % 512)) {
+ ata_dev_warn(qc->dev, "invalid transfer count %d\n", n_block);
+ goto invalid_param_len;
+ }
+ sect = n_block / 512;
+ options = cdb[14];
+
+ if (ata_ncq_enabled(qc->dev) &&
+ (qc->dev->flags & ATA_DFLAG_NCQ_SEND_RECV)) {
+ tf->protocol = ATA_PROT_NCQ;
+ tf->command = ATA_CMD_FPDMA_RECV;
+ tf->hob_nsect = ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN & 0x1f;
+ tf->nsect = qc->tag << 3;
+ tf->feature = sect & 0xff;
+ tf->hob_feature = (sect >> 8) & 0xff;
+ tf->auxiliary = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES;
+ } else {
+ tf->command = ATA_CMD_ZAC_MGMT_IN;
+ tf->feature = ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES;
+ tf->protocol = ATA_PROT_DMA;
+ tf->hob_feature = options;
+ tf->hob_nsect = (sect >> 8) & 0xff;
+ tf->nsect = sect & 0xff;
+ }
+ tf->device = ATA_LBA;
+ tf->lbah = (block >> 16) & 0xff;
+ tf->lbam = (block >> 8) & 0xff;
+ tf->lbal = block & 0xff;
+ tf->hob_lbah = (block >> 40) & 0xff;
+ tf->hob_lbam = (block >> 32) & 0xff;
+ tf->hob_lbal = (block >> 24) & 0xff;
+
+ tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48;
+ qc->flags |= ATA_QCFLAG_RESULT_TF;
+
+ ata_qc_set_pc_nbytes(qc);
+
+ qc->complete_fn = ata_scsi_report_zones_complete;
+
+ return 0;
+
+invalid_fld:
+ ata_scsi_set_invalid_field(qc->dev, scmd, fp, bp);
+ return 1;
+
+invalid_param_len:
+ /* "Parameter list length error" */
+ ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x1a, 0x0);
+ return 1;
+}
+
+/**
* ata_mselect_caching - Simulate MODE SELECT for caching info page
* @qc: Storage for translated ATA taskfile
* @buf: input buffer
@@ -3632,6 +3786,9 @@ static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd)
return ata_scsi_mode_select_xlat;
break;
+ case ZBC_IN:
+ return ata_scsi_zbc_in_xlat;
+
case START_STOP:
return ata_scsi_start_stop_xlat;
}
diff --git a/drivers/ata/libata-trace.c b/drivers/ata/libata-trace.c
index 99ec1e8..9caeabd 100644
--- a/drivers/ata/libata-trace.c
+++ b/drivers/ata/libata-trace.c
@@ -162,6 +162,9 @@ libata_trace_parse_subcmd(struct trace_seq *p, unsigned char cmd,
case ATA_SUBCMD_FPDMA_RECV_RD_LOG_DMA_EXT:
trace_seq_printf(p, " READ_LOG_DMA_EXT");
break;
+ case ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN:
+ trace_seq_printf(p, " ZAC_MGMT_IN");
+ break;
}
break;
case ATA_CMD_FPDMA_SEND:
@@ -187,6 +190,13 @@ libata_trace_parse_subcmd(struct trace_seq *p, unsigned char cmd,
break;
}
break;
+ case ATA_CMD_ZAC_MGMT_IN:
+ switch (feature) {
+ case ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES:
+ trace_seq_printf(p, " REPORT_ZONES");
+ break;
+ }
+ break;
}
trace_seq_putc(p, 0);
diff --git a/include/linux/ata.h b/include/linux/ata.h
index 032bb22..2f01ba9 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -302,12 +302,14 @@ enum {
ATA_CMD_CFA_WRITE_MULT_NE = 0xCD,
ATA_CMD_REQ_SENSE_DATA = 0x0B,
ATA_CMD_SANITIZE_DEVICE = 0xB4,
+ ATA_CMD_ZAC_MGMT_IN = 0x4A,
/* marked obsolete in the ATA/ATAPI-7 spec */
ATA_CMD_RESTORE = 0x10,
/* Subcmds for ATA_CMD_FPDMA_RECV */
ATA_SUBCMD_FPDMA_RECV_RD_LOG_DMA_EXT = 0x01,
+ ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN = 0x02,
/* Subcmds for ATA_CMD_FPDMA_SEND */
ATA_SUBCMD_FPDMA_SEND_DSM = 0x00,
@@ -318,6 +320,9 @@ enum {
ATA_SUBCMD_NCQ_NON_DATA_SET_FEATURES = 0x05,
ATA_SUBCMD_NCQ_NON_DATA_ZERO_EXT = 0x06,
+ /* Subcmds for ATA_CMD_ZAC_MGMT_IN */
+ ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES = 0x00,
+
/* READ_LOG_EXT pages */
ATA_LOG_DIRECTORY = 0x0,
ATA_LOG_SATA_NCQ = 0x10,
diff --git a/include/trace/events/libata.h b/include/trace/events/libata.h
index 318c04b..b966417 100644
--- a/include/trace/events/libata.h
+++ b/include/trace/events/libata.h
@@ -98,6 +98,7 @@
ata_opcode_name(ATA_CMD_CFA_WRITE_MULT_NE), \
ata_opcode_name(ATA_CMD_REQ_SENSE_DATA), \
ata_opcode_name(ATA_CMD_SANITIZE_DEVICE), \
+ ata_opcode_name(ATA_CMD_ZAC_MGMT_IN), \
ata_opcode_name(ATA_CMD_RESTORE), \
ata_opcode_name(ATA_CMD_READ_LONG), \
ata_opcode_name(ATA_CMD_READ_LONG_ONCE), \
--
1.8.5.6
--
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