* [PATCH 1/4] libata: implement ZBC IN translation
2016-04-04 9:47 [PATCH 0/4] libata: ZAC support Hannes Reinecke
@ 2016-04-04 9:47 ` Hannes Reinecke
2016-04-04 15:49 ` Tejun Heo
2016-04-04 16:26 ` Shaun Tancheff
2016-04-04 9:47 ` [PATCH 2/4] libata: Implement ZBC OUT translation Hannes Reinecke
` (3 subsequent siblings)
4 siblings, 2 replies; 13+ messages in thread
From: Hannes Reinecke @ 2016-04-04 9:47 UTC (permalink / raw)
To: Tejun Heo
Cc: linux-ide, Martin K. Petersen, Christoph Hellwig, Shaun Tancheff,
Damien Le Moal, linux-scsi, Sathya Prakash, Hannes Reinecke
ZAC drives implement 'zac management in' command template,
which maps onto the ZBC IN command.
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
drivers/ata/libata-eh.c | 1 +
drivers/ata/libata-scsi.c | 144 ++++++++++++++++++++++++++++++++++++++++++
include/linux/ata.h | 4 ++
include/trace/events/libata.h | 1 +
4 files changed, 150 insertions(+)
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index e6b16f4..e947bd5 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -2480,6 +2480,7 @@ 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 d29832f..21c2b40 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -3310,6 +3310,147 @@ invalid_opcode:
return 1;
}
+/*
+ * ata_scsi_report_zones_complete
+ *
+ * Convert T-13 little-endian field representation into
+ * T-10 big-endian field representation.
+ */
+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];
+
+ 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 & 0x3f;
+ 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
@@ -3623,6 +3764,9 @@ 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/include/linux/ata.h b/include/linux/ata.h
index e402cb3..2e4a6af 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -301,6 +301,7 @@ 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,
@@ -309,6 +310,9 @@ enum {
ATA_SUBCMD_FPDMA_SEND_DSM = 0x00,
ATA_SUBCMD_FPDMA_SEND_WR_LOG_DMA_EXT = 0x02,
+ /* Subcmds for ATA_CMD_ZAC_MGMT_IN */
+ ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES = 0x00,
+
/* READ_LOG_EXT pages */
ATA_LOG_SATA_NCQ = 0x10,
ATA_LOG_NCQ_SEND_RECV = 0x13,
diff --git a/include/trace/events/libata.h b/include/trace/events/libata.h
index 8b0fbd9..02ec4e5 100644
--- a/include/trace/events/libata.h
+++ b/include/trace/events/libata.h
@@ -97,6 +97,7 @@
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
^ permalink raw reply related [flat|nested] 13+ messages in thread* Re: [PATCH 1/4] libata: implement ZBC IN translation
2016-04-04 9:47 ` [PATCH 1/4] libata: implement ZBC IN translation Hannes Reinecke
@ 2016-04-04 15:49 ` Tejun Heo
2016-04-06 7:51 ` Hannes Reinecke
2016-04-04 16:26 ` Shaun Tancheff
1 sibling, 1 reply; 13+ messages in thread
From: Tejun Heo @ 2016-04-04 15:49 UTC (permalink / raw)
To: Hannes Reinecke
Cc: linux-ide, Martin K. Petersen, Christoph Hellwig, Shaun Tancheff,
Damien Le Moal, linux-scsi, Sathya Prakash
On Mon, Apr 04, 2016 at 11:47:48AM +0200, Hannes Reinecke wrote:
> +/*
/**
> + * ata_scsi_report_zones_complete
> + *
> + * Convert T-13 little-endian field representation into
> + * T-10 big-endian field representation.
> + */
> +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;
Not this patch's fault but ugh........ :(
Thanks.
--
tejun
^ permalink raw reply [flat|nested] 13+ messages in thread* Re: [PATCH 1/4] libata: implement ZBC IN translation
2016-04-04 15:49 ` Tejun Heo
@ 2016-04-06 7:51 ` Hannes Reinecke
0 siblings, 0 replies; 13+ messages in thread
From: Hannes Reinecke @ 2016-04-06 7:51 UTC (permalink / raw)
To: Tejun Heo
Cc: linux-ide, Martin K. Petersen, Christoph Hellwig, Shaun Tancheff,
Damien Le Moal, linux-scsi, Sathya Prakash
On 04/04/2016 05:49 PM, Tejun Heo wrote:
> On Mon, Apr 04, 2016 at 11:47:48AM +0200, Hannes Reinecke wrote:
>> +/*
>
> /**
>
>> + * ata_scsi_report_zones_complete
>> + *
>> + * Convert T-13 little-endian field representation into
>> + * T-10 big-endian field representation.
>> + */
>> +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;
>
> Not this patch's fault but ugh........ :(
>
I know. I've been asking the very same questions to T-13.
But apparently it's by design ... gnaa.
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
hare@suse.de +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)
--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 13+ messages in thread
* Re: [PATCH 1/4] libata: implement ZBC IN translation
2016-04-04 9:47 ` [PATCH 1/4] libata: implement ZBC IN translation Hannes Reinecke
2016-04-04 15:49 ` Tejun Heo
@ 2016-04-04 16:26 ` Shaun Tancheff
1 sibling, 0 replies; 13+ messages in thread
From: Shaun Tancheff @ 2016-04-04 16:26 UTC (permalink / raw)
To: Hannes Reinecke
Cc: Tejun Heo, linux-ide, Martin K. Petersen, Christoph Hellwig,
Damien Le Moal, linux-scsi, Sathya Prakash
On Mon, Apr 4, 2016 at 4:47 PM, Hannes Reinecke <hare@suse.de> wrote:
> ZAC drives implement 'zac management in' command template,
> which maps onto the ZBC IN command.
>
> Signed-off-by: Hannes Reinecke <hare@suse.de>
> ---
> drivers/ata/libata-eh.c | 1 +
> drivers/ata/libata-scsi.c | 144 ++++++++++++++++++++++++++++++++++++++++++
> include/linux/ata.h | 4 ++
> include/trace/events/libata.h | 1 +
> 4 files changed, 150 insertions(+)
>
> diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
> index e6b16f4..e947bd5 100644
> --- a/drivers/ata/libata-eh.c
> +++ b/drivers/ata/libata-eh.c
> @@ -2480,6 +2480,7 @@ 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 d29832f..21c2b40 100644
> --- a/drivers/ata/libata-scsi.c
> +++ b/drivers/ata/libata-scsi.c
> @@ -3310,6 +3310,147 @@ invalid_opcode:
> return 1;
> }
>
> +/*
> + * ata_scsi_report_zones_complete
> + *
> + * Convert T-13 little-endian field representation into
> + * T-10 big-endian field representation.
> + */
> +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;
The bit munging around rec[0] and rec[1] look unnecessary to me.
Does the top nibble of re[0] and bits 2 and 3 of rec[1] really
need these cleanups?
> + 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];
> +
> + 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 & 0x3f;
> + 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
> @@ -3623,6 +3764,9 @@ 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/include/linux/ata.h b/include/linux/ata.h
> index e402cb3..2e4a6af 100644
> --- a/include/linux/ata.h
> +++ b/include/linux/ata.h
> @@ -301,6 +301,7 @@ 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,
> @@ -309,6 +310,9 @@ enum {
> ATA_SUBCMD_FPDMA_SEND_DSM = 0x00,
> ATA_SUBCMD_FPDMA_SEND_WR_LOG_DMA_EXT = 0x02,
>
> + /* Subcmds for ATA_CMD_ZAC_MGMT_IN */
> + ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES = 0x00,
> +
> /* READ_LOG_EXT pages */
> ATA_LOG_SATA_NCQ = 0x10,
> ATA_LOG_NCQ_SEND_RECV = 0x13,
> diff --git a/include/trace/events/libata.h b/include/trace/events/libata.h
> index 8b0fbd9..02ec4e5 100644
> --- a/include/trace/events/libata.h
> +++ b/include/trace/events/libata.h
> @@ -97,6 +97,7 @@
> 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
>
The zone report looks good.
Tested-by: Shaun Tancheff <shaun.tancheff@seagate.com>
--
Shaun Tancheff
^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH 2/4] libata: Implement ZBC OUT translation
2016-04-04 9:47 [PATCH 0/4] libata: ZAC support Hannes Reinecke
2016-04-04 9:47 ` [PATCH 1/4] libata: implement ZBC IN translation Hannes Reinecke
@ 2016-04-04 9:47 ` Hannes Reinecke
2016-04-04 13:08 ` Shaun Tancheff
2016-04-04 9:47 ` [PATCH 3/4] libata: support device-managed ZAC devices Hannes Reinecke
` (2 subsequent siblings)
4 siblings, 1 reply; 13+ messages in thread
From: Hannes Reinecke @ 2016-04-04 9:47 UTC (permalink / raw)
To: Tejun Heo
Cc: linux-ide, Martin K. Petersen, Christoph Hellwig, Shaun Tancheff,
Damien Le Moal, linux-scsi, Sathya Prakash, Hannes Reinecke
ZAC drives implement a 'zac management out' command template,
which maps onto the ZBC OUT command.
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
drivers/ata/libata-eh.c | 1 +
drivers/ata/libata-scsi.c | 73 +++++++++++++++++++++++++++++++++++++++++++
include/linux/ata.h | 7 +++++
include/trace/events/libata.h | 1 +
4 files changed, 82 insertions(+)
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index e947bd5..ee984f9 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -2481,6 +2481,7 @@ const char *ata_get_cmd_descript(u8 command)
{ 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_ZAC_MGMT_OUT, "ZAC MANAGEMENT OUT" },
{ 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 21c2b40..6db2aaf 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -3451,6 +3451,76 @@ invalid_param_len:
return 1;
}
+static unsigned int ata_scsi_zbc_out_xlat(struct ata_queued_cmd *qc)
+{
+ struct ata_taskfile *tf = &qc->tf;
+ struct scsi_cmnd *scmd = qc->scsicmd;
+ struct ata_device *dev = qc->dev;
+ const u8 *cdb = scmd->cmnd;
+ u8 reset_all, sa;
+ u64 block;
+ u32 n_block;
+ u16 fp = (u16)-1;
+
+ if (unlikely(scmd->cmd_len < 16)) {
+ fp = 15;
+ goto invalid_fld;
+ }
+
+ /*
+ * The service action definition got moved from
+ * 0x00 to 0x04 with zbc-r02, so accept both.
+ */
+ sa = cdb[1] & 0x1f;
+ /* Compatibility with ZBC r01 */
+ if (!sa)
+ sa = ZO_RESET_WRITE_POINTER;
+ if (sa != ZO_RESET_WRITE_POINTER) {
+ fp = 1;
+ goto invalid_fld;
+ }
+
+ scsi_16_lba_len(cdb, &block, &n_block);
+ if (n_block) {
+ /*
+ * ZAC MANAGEMENT OUT doesn't define any length
+ */
+ goto invalid_param_len;
+ }
+ if (block > dev->n_sectors)
+ goto out_of_range;
+
+ reset_all = cdb[14] & 0x1;
+
+ tf->protocol = ATA_PROT_NODATA;
+ tf->command = ATA_CMD_ZAC_MGMT_OUT;
+ tf->feature = sa;
+ tf->hob_feature = reset_all & 0x1;
+
+ 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->device = ATA_LBA;
+ tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48;
+
+ return 0;
+
+ invalid_fld:
+ ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff);
+ return 1;
+ out_of_range:
+ /* "Logical Block Address out of range" */
+ ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x00);
+ 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
@@ -3767,6 +3837,9 @@ static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd)
case ZBC_IN:
return ata_scsi_zbc_in_xlat;
+ case ZBC_OUT:
+ return ata_scsi_zbc_out_xlat;
+
case START_STOP:
return ata_scsi_start_stop_xlat;
}
diff --git a/include/linux/ata.h b/include/linux/ata.h
index 2e4a6af..eef9d80 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -302,6 +302,7 @@ enum {
ATA_CMD_REQ_SENSE_DATA = 0x0B,
ATA_CMD_SANITIZE_DEVICE = 0xB4,
ATA_CMD_ZAC_MGMT_IN = 0x4A,
+ ATA_CMD_ZAC_MGMT_OUT = 0x9F,
/* marked obsolete in the ATA/ATAPI-7 spec */
ATA_CMD_RESTORE = 0x10,
@@ -313,6 +314,12 @@ enum {
/* Subcmds for ATA_CMD_ZAC_MGMT_IN */
ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES = 0x00,
+ /* Subcmds for ATA_CMD_ZAC_MGMT_OUT */
+ ATA_SUBCMD_ZAC_MGMT_OUT_CLOSE_ZONE = 0x01,
+ ATA_SUBCMD_ZAC_MGMT_OUT_FINISH_ZONE = 0x02,
+ ATA_SUBCMD_ZAC_MGMT_OUT_OPEN_ZONE = 0x03,
+ ATA_SUBCMD_ZAC_MGMT_OUT_RESET_WRITE_POINTER = 0x04,
+
/* READ_LOG_EXT pages */
ATA_LOG_SATA_NCQ = 0x10,
ATA_LOG_NCQ_SEND_RECV = 0x13,
diff --git a/include/trace/events/libata.h b/include/trace/events/libata.h
index 02ec4e5..24dcd43 100644
--- a/include/trace/events/libata.h
+++ b/include/trace/events/libata.h
@@ -98,6 +98,7 @@
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_ZAC_MGMT_OUT), \
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
^ permalink raw reply related [flat|nested] 13+ messages in thread* Re: [PATCH 2/4] libata: Implement ZBC OUT translation
2016-04-04 9:47 ` [PATCH 2/4] libata: Implement ZBC OUT translation Hannes Reinecke
@ 2016-04-04 13:08 ` Shaun Tancheff
2016-04-04 13:18 ` Hannes Reinecke
0 siblings, 1 reply; 13+ messages in thread
From: Shaun Tancheff @ 2016-04-04 13:08 UTC (permalink / raw)
To: Hannes Reinecke
Cc: Tejun Heo, linux-ide, Martin K. Petersen, Christoph Hellwig,
Damien Le Moal, linux-scsi, Sathya Prakash
On Mon, Apr 4, 2016 at 4:47 PM, Hannes Reinecke <hare@suse.de> wrote:
> ZAC drives implement a 'zac management out' command template,
> which maps onto the ZBC OUT command.
>
> Signed-off-by: Hannes Reinecke <hare@suse.de>
> ---
> drivers/ata/libata-eh.c | 1 +
> drivers/ata/libata-scsi.c | 73 +++++++++++++++++++++++++++++++++++++++++++
> include/linux/ata.h | 7 +++++
> include/trace/events/libata.h | 1 +
> 4 files changed, 82 insertions(+)
>
> diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
> index e947bd5..ee984f9 100644
> --- a/drivers/ata/libata-eh.c
> +++ b/drivers/ata/libata-eh.c
> @@ -2481,6 +2481,7 @@ const char *ata_get_cmd_descript(u8 command)
> { 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_ZAC_MGMT_OUT, "ZAC MANAGEMENT OUT" },
> { 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 21c2b40..6db2aaf 100644
> --- a/drivers/ata/libata-scsi.c
> +++ b/drivers/ata/libata-scsi.c
> @@ -3451,6 +3451,76 @@ invalid_param_len:
> return 1;
> }
>
> +static unsigned int ata_scsi_zbc_out_xlat(struct ata_queued_cmd *qc)
> +{
> + struct ata_taskfile *tf = &qc->tf;
> + struct scsi_cmnd *scmd = qc->scsicmd;
> + struct ata_device *dev = qc->dev;
> + const u8 *cdb = scmd->cmnd;
> + u8 reset_all, sa;
> + u64 block;
> + u32 n_block;
> + u16 fp = (u16)-1;
> +
> + if (unlikely(scmd->cmd_len < 16)) {
> + fp = 15;
> + goto invalid_fld;
> + }
> +
> + /*
> + * The service action definition got moved from
> + * 0x00 to 0x04 with zbc-r02, so accept both.
> + */
> + sa = cdb[1] & 0x1f;
> + /* Compatibility with ZBC r01 */
> + if (!sa)
> + sa = ZO_RESET_WRITE_POINTER;
I think we can support the remaining zone commands here:
if (!(sa == ZO_CLOSE_ZONE || sa == ZO_FINISH_ZONE ||
sa == ZO_OPEN_ZONE || sa == ZO_RESET_WRITE_POINTER)) {
...
> + if (sa != ZO_RESET_WRITE_POINTER) {
> + fp = 1;
> + goto invalid_fld;
> + }
> +
> + scsi_16_lba_len(cdb, &block, &n_block);
> + if (n_block) {
> + /*
> + * ZAC MANAGEMENT OUT doesn't define any length
> + */
> + goto invalid_param_len;
> + }
> + if (block > dev->n_sectors)
> + goto out_of_range;
> +
> + reset_all = cdb[14] & 0x1;
> +
> + tf->protocol = ATA_PROT_NODATA;
> + tf->command = ATA_CMD_ZAC_MGMT_OUT;
> + tf->feature = sa;
> + tf->hob_feature = reset_all & 0x1;
> +
> + 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->device = ATA_LBA;
> + tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48;
> +
> + return 0;
> +
> + invalid_fld:
> + ata_scsi_set_invalid_field(qc->dev, scmd, fp, 0xff);
> + return 1;
> + out_of_range:
> + /* "Logical Block Address out of range" */
> + ata_scsi_set_sense(qc->dev, scmd, ILLEGAL_REQUEST, 0x21, 0x00);
> + 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
> @@ -3767,6 +3837,9 @@ static inline ata_xlat_func_t ata_get_xlat_func(struct ata_device *dev, u8 cmd)
> case ZBC_IN:
> return ata_scsi_zbc_in_xlat;
>
> + case ZBC_OUT:
> + return ata_scsi_zbc_out_xlat;
> +
> case START_STOP:
> return ata_scsi_start_stop_xlat;
> }
> diff --git a/include/linux/ata.h b/include/linux/ata.h
> index 2e4a6af..eef9d80 100644
> --- a/include/linux/ata.h
> +++ b/include/linux/ata.h
> @@ -302,6 +302,7 @@ enum {
> ATA_CMD_REQ_SENSE_DATA = 0x0B,
> ATA_CMD_SANITIZE_DEVICE = 0xB4,
> ATA_CMD_ZAC_MGMT_IN = 0x4A,
> + ATA_CMD_ZAC_MGMT_OUT = 0x9F,
>
> /* marked obsolete in the ATA/ATAPI-7 spec */
> ATA_CMD_RESTORE = 0x10,
> @@ -313,6 +314,12 @@ enum {
> /* Subcmds for ATA_CMD_ZAC_MGMT_IN */
> ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES = 0x00,
>
> + /* Subcmds for ATA_CMD_ZAC_MGMT_OUT */
> + ATA_SUBCMD_ZAC_MGMT_OUT_CLOSE_ZONE = 0x01,
> + ATA_SUBCMD_ZAC_MGMT_OUT_FINISH_ZONE = 0x02,
> + ATA_SUBCMD_ZAC_MGMT_OUT_OPEN_ZONE = 0x03,
> + ATA_SUBCMD_ZAC_MGMT_OUT_RESET_WRITE_POINTER = 0x04,
> +
> /* READ_LOG_EXT pages */
> ATA_LOG_SATA_NCQ = 0x10,
> ATA_LOG_NCQ_SEND_RECV = 0x13,
> diff --git a/include/trace/events/libata.h b/include/trace/events/libata.h
> index 02ec4e5..24dcd43 100644
> --- a/include/trace/events/libata.h
> +++ b/include/trace/events/libata.h
> @@ -98,6 +98,7 @@
> 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_ZAC_MGMT_OUT), \
> 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
>
--
Shaun Tancheff
^ permalink raw reply [flat|nested] 13+ messages in thread* Re: [PATCH 2/4] libata: Implement ZBC OUT translation
2016-04-04 13:08 ` Shaun Tancheff
@ 2016-04-04 13:18 ` Hannes Reinecke
0 siblings, 0 replies; 13+ messages in thread
From: Hannes Reinecke @ 2016-04-04 13:18 UTC (permalink / raw)
To: Shaun Tancheff
Cc: Tejun Heo, linux-ide, Martin K. Petersen, Christoph Hellwig,
Damien Le Moal, linux-scsi, Sathya Prakash
On 04/04/2016 03:08 PM, Shaun Tancheff wrote:
> On Mon, Apr 4, 2016 at 4:47 PM, Hannes Reinecke <hare@suse.de> wrote:
>> ZAC drives implement a 'zac management out' command template,
>> which maps onto the ZBC OUT command.
>>
>> Signed-off-by: Hannes Reinecke <hare@suse.de>
>> ---
>> drivers/ata/libata-eh.c | 1 +
>> drivers/ata/libata-scsi.c | 73 +++++++++++++++++++++++++++++++++++++++++++
>> include/linux/ata.h | 7 +++++
>> include/trace/events/libata.h | 1 +
>> 4 files changed, 82 insertions(+)
>>
>> diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
>> index e947bd5..ee984f9 100644
>> --- a/drivers/ata/libata-eh.c
>> +++ b/drivers/ata/libata-eh.c
>> @@ -2481,6 +2481,7 @@ const char *ata_get_cmd_descript(u8 command)
>> { 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_ZAC_MGMT_OUT, "ZAC MANAGEMENT OUT" },
>> { 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 21c2b40..6db2aaf 100644
>> --- a/drivers/ata/libata-scsi.c
>> +++ b/drivers/ata/libata-scsi.c
>> @@ -3451,6 +3451,76 @@ invalid_param_len:
>> return 1;
>> }
>>
>> +static unsigned int ata_scsi_zbc_out_xlat(struct ata_queued_cmd *qc)
>> +{
>> + struct ata_taskfile *tf = &qc->tf;
>> + struct scsi_cmnd *scmd = qc->scsicmd;
>> + struct ata_device *dev = qc->dev;
>> + const u8 *cdb = scmd->cmnd;
>> + u8 reset_all, sa;
>> + u64 block;
>> + u32 n_block;
>> + u16 fp = (u16)-1;
>> +
>> + if (unlikely(scmd->cmd_len < 16)) {
>> + fp = 15;
>> + goto invalid_fld;
>> + }
>> +
>> + /*
>> + * The service action definition got moved from
>> + * 0x00 to 0x04 with zbc-r02, so accept both.
>> + */
>> + sa = cdb[1] & 0x1f;
>> + /* Compatibility with ZBC r01 */
>> + if (!sa)
>> + sa = ZO_RESET_WRITE_POINTER;
>
> I think we can support the remaining zone commands here:
>
> if (!(sa == ZO_CLOSE_ZONE || sa == ZO_FINISH_ZONE ||
> sa == ZO_OPEN_ZONE || sa == ZO_RESET_WRITE_POINTER)) {
> ...
>
Sure, I just didn't do it for now as none of the drives I have
actually supports this.
But yes, will be fixing it up for the next round of submissions.
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
hare@suse.de +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)
^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH 3/4] libata: support device-managed ZAC devices
2016-04-04 9:47 [PATCH 0/4] libata: ZAC support Hannes Reinecke
2016-04-04 9:47 ` [PATCH 1/4] libata: implement ZBC IN translation Hannes Reinecke
2016-04-04 9:47 ` [PATCH 2/4] libata: Implement ZBC OUT translation Hannes Reinecke
@ 2016-04-04 9:47 ` Hannes Reinecke
2016-04-04 11:13 ` Sergei Shtylyov
2016-04-04 9:47 ` [PATCH 4/4] libata: support host-aware and host-managed " Hannes Reinecke
2016-04-04 15:50 ` [PATCH 0/4] libata: ZAC support Tejun Heo
4 siblings, 1 reply; 13+ messages in thread
From: Hannes Reinecke @ 2016-04-04 9:47 UTC (permalink / raw)
To: Tejun Heo
Cc: linux-ide, Martin K. Petersen, Christoph Hellwig, Shaun Tancheff,
Damien Le Moal, linux-scsi, Sathya Prakash, Hannes Reinecke
Device-managed ZAC devices just set the zoned capabilities field
in INQUIRY byte 69 (cf ACS-4). This corresponds to the 'zoned'
field in the block device characteristics VPD page.
As this is only defined in SPC-5/SBC-4 we also need to update
the supported SCSI version descriptor.
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
drivers/ata/libata-scsi.c | 19 ++++++++++---------
include/linux/ata.h | 5 +++++
2 files changed, 15 insertions(+), 9 deletions(-)
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 6db2aaf..ff95ef6 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -2076,14 +2076,14 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
0x00,
0xA0, /* SAM-5 (no version claimed) */
- 0x04,
- 0xC0, /* SBC-3 (no version claimed) */
+ 0x06,
+ 0x00, /* SBC-4 (no version claimed) */
- 0x04,
- 0x60, /* SPC-4 (no version claimed) */
+ 0x05,
+ 0xC0, /* SPC-5 (no version claimed) */
0x60,
- 0x20, /* ZBC (no version claimed) */
+ 0x24, /* ZBC r05 */
};
u8 hdr[] = {
@@ -2103,10 +2103,8 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
(args->dev->link->ap->pflags & ATA_PFLAG_EXTERNAL))
hdr[1] |= (1 << 7);
- if (args->dev->class == ATA_DEV_ZAC) {
+ if (args->dev->class == ATA_DEV_ZAC)
hdr[0] = TYPE_ZBC;
- hdr[2] = 0x6; /* ZBC is defined in SPC-4 */
- }
memcpy(rbuf, hdr, sizeof(hdr));
memcpy(&rbuf[8], "ATA ", 8);
@@ -2120,7 +2118,7 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
if (rbuf[32] == 0 || rbuf[32] == ' ')
memcpy(&rbuf[32], "n/a ", 4);
- if (args->dev->class == ATA_DEV_ZAC)
+ if (ata_id_zoned_cap(args->id) || args->dev->class == ATA_DEV_ZAC)
memcpy(rbuf + 58, versions_zbc, sizeof(versions_zbc));
else
memcpy(rbuf + 58, versions, sizeof(versions));
@@ -2316,12 +2314,15 @@ static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf)
{
int form_factor = ata_id_form_factor(args->id);
int media_rotation_rate = ata_id_rotation_rate(args->id);
+ u8 zoned = ata_id_zoned_cap(args->id);
rbuf[1] = 0xb1;
rbuf[3] = 0x3c;
rbuf[4] = media_rotation_rate >> 8;
rbuf[5] = media_rotation_rate;
rbuf[7] = form_factor;
+ if (zoned)
+ rbuf[8] = (zoned << 4);
return 0;
}
diff --git a/include/linux/ata.h b/include/linux/ata.h
index eef9d80..4ad7363 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -900,6 +900,11 @@ static inline bool ata_id_is_ssd(const u16 *id)
return id[ATA_ID_ROT_SPEED] == 0x01;
}
+static inline u8 ata_id_zoned_cap(const u16 *id)
+{
+ return (id[ATA_ID_ADDITIONAL_SUPP] & 0x3);
+}
+
static inline bool ata_id_pio_need_iordy(const u16 *id, const u8 pio)
{
/* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */
--
1.8.5.6
^ permalink raw reply related [flat|nested] 13+ messages in thread* Re: [PATCH 3/4] libata: support device-managed ZAC devices
2016-04-04 9:47 ` [PATCH 3/4] libata: support device-managed ZAC devices Hannes Reinecke
@ 2016-04-04 11:13 ` Sergei Shtylyov
2016-04-04 14:15 ` Hannes Reinecke
0 siblings, 1 reply; 13+ messages in thread
From: Sergei Shtylyov @ 2016-04-04 11:13 UTC (permalink / raw)
To: Hannes Reinecke, Tejun Heo
Cc: linux-ide, Martin K. Petersen, Christoph Hellwig, Shaun Tancheff,
Damien Le Moal, linux-scsi, Sathya Prakash
Hello.
On 4/4/2016 12:47 PM, Hannes Reinecke wrote:
> Device-managed ZAC devices just set the zoned capabilities field
> in INQUIRY byte 69 (cf ACS-4). This corresponds to the 'zoned'
> field in the block device characteristics VPD page.
> As this is only defined in SPC-5/SBC-4 we also need to update
> the supported SCSI version descriptor.
>
> Signed-off-by: Hannes Reinecke <hare@suse.de>
> ---
> drivers/ata/libata-scsi.c | 19 ++++++++++---------
> include/linux/ata.h | 5 +++++
> 2 files changed, 15 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
> index 6db2aaf..ff95ef6 100644
> --- a/drivers/ata/libata-scsi.c
> +++ b/drivers/ata/libata-scsi.c
[...]
> @@ -2316,12 +2314,15 @@ static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf)
> {
> int form_factor = ata_id_form_factor(args->id);
> int media_rotation_rate = ata_id_rotation_rate(args->id);
> + u8 zoned = ata_id_zoned_cap(args->id);
>
> rbuf[1] = 0xb1;
> rbuf[3] = 0x3c;
> rbuf[4] = media_rotation_rate >> 8;
> rbuf[5] = media_rotation_rate;
> rbuf[7] = form_factor;
> + if (zoned)
> + rbuf[8] = (zoned << 4);
Parens not needed here.
[...]
MBR, Sergei
^ permalink raw reply [flat|nested] 13+ messages in thread* Re: [PATCH 3/4] libata: support device-managed ZAC devices
2016-04-04 11:13 ` Sergei Shtylyov
@ 2016-04-04 14:15 ` Hannes Reinecke
0 siblings, 0 replies; 13+ messages in thread
From: Hannes Reinecke @ 2016-04-04 14:15 UTC (permalink / raw)
To: Sergei Shtylyov, Tejun Heo
Cc: linux-ide, Martin K. Petersen, Christoph Hellwig, Shaun Tancheff,
Damien Le Moal, linux-scsi, Sathya Prakash
On 04/04/2016 01:13 PM, Sergei Shtylyov wrote:
> Hello.
>
> On 4/4/2016 12:47 PM, Hannes Reinecke wrote:
>
>> Device-managed ZAC devices just set the zoned capabilities field
>> in INQUIRY byte 69 (cf ACS-4). This corresponds to the 'zoned'
>> field in the block device characteristics VPD page.
>> As this is only defined in SPC-5/SBC-4 we also need to update
>> the supported SCSI version descriptor.
>>
>> Signed-off-by: Hannes Reinecke <hare@suse.de>
>> ---
>> drivers/ata/libata-scsi.c | 19 ++++++++++---------
>> include/linux/ata.h | 5 +++++
>> 2 files changed, 15 insertions(+), 9 deletions(-)
>>
>> diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
>> index 6db2aaf..ff95ef6 100644
>> --- a/drivers/ata/libata-scsi.c
>> +++ b/drivers/ata/libata-scsi.c
> [...]
>> @@ -2316,12 +2314,15 @@ static unsigned int
>> ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf)
>> {
>> int form_factor = ata_id_form_factor(args->id);
>> int media_rotation_rate = ata_id_rotation_rate(args->id);
>> + u8 zoned = ata_id_zoned_cap(args->id);
>>
>> rbuf[1] = 0xb1;
>> rbuf[3] = 0x3c;
>> rbuf[4] = media_rotation_rate >> 8;
>> rbuf[5] = media_rotation_rate;
>> rbuf[7] = form_factor;
>> + if (zoned)
>> + rbuf[8] = (zoned << 4);
>
> Parens not needed here.
>
> [...]
>
> MBR, Sergei
>
Thanks, will be fixing it up with the next round of submissions.
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
hare@suse.de +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)
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^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH 4/4] libata: support host-aware and host-managed ZAC devices
2016-04-04 9:47 [PATCH 0/4] libata: ZAC support Hannes Reinecke
` (2 preceding siblings ...)
2016-04-04 9:47 ` [PATCH 3/4] libata: support device-managed ZAC devices Hannes Reinecke
@ 2016-04-04 9:47 ` Hannes Reinecke
2016-04-04 15:50 ` [PATCH 0/4] libata: ZAC support Tejun Heo
4 siblings, 0 replies; 13+ messages in thread
From: Hannes Reinecke @ 2016-04-04 9:47 UTC (permalink / raw)
To: Tejun Heo
Cc: linux-ide, Martin K. Petersen, Christoph Hellwig, Shaun Tancheff,
Damien Le Moal, linux-scsi, Sathya Prakash, Hannes Reinecke
Byte 69 bits 0:1 in the IDENTIFY DEVICE data indicate a
host-aware ZAC device.
Host-managed ZAC devices have their own individual signature,
and to not set the bits in the IDENTIFY DEVICE data.
And whenever we detect a ZAC-compatible device we should
be displaying the zoned block characteristics VPD page.
Signed-off-by: Hannes Reinecke <hare@suse.de>
---
drivers/ata/libata-core.c | 50 +++++++++++++++++++++++++++++++++++++++++++++++
drivers/ata/libata-scsi.c | 38 +++++++++++++++++++++++++++++++++--
include/linux/ata.h | 1 +
include/linux/libata.h | 7 +++++++
4 files changed, 94 insertions(+), 2 deletions(-)
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index a8d6336..3ec2bbd 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -66,6 +66,7 @@
#include <scsi/scsi_host.h>
#include <linux/libata.h>
#include <asm/byteorder.h>
+#include <asm/unaligned.h>
#include <linux/cdrom.h>
#include <linux/ratelimit.h>
#include <linux/pm_runtime.h>
@@ -2166,6 +2167,54 @@ static void ata_dev_config_sense_reporting(struct ata_device *dev)
}
}
+static void ata_dev_config_zac(struct ata_device *dev)
+{
+ struct ata_port *ap = dev->link->ap;
+ unsigned int err_mask;
+ u8 *identify_buf = ap->sector_buf;
+
+ dev->zac_zones_optimal_open = (u32)-1;
+ dev->zac_zones_optimal_nonseq = (u32)-1;
+ dev->zac_zones_max_open = (u32)-1;
+
+ /*
+ * Always set the 'ZAC' flag for Host-managed devices.
+ */
+ if (dev->class == ATA_DEV_ZAC)
+ dev->flags |= ATA_DFLAG_ZAC;
+ else if (ata_id_zoned_cap(dev->id) == 0x01)
+ /*
+ * Check for host-aware devices.
+ */
+ dev->flags |= ATA_DFLAG_ZAC;
+
+ if (!(dev->flags & ATA_DFLAG_ZAC))
+ return;
+
+ /*
+ * Read IDENTIFY DEVICE data log, page 9 (Zoned-device information)
+ */
+ err_mask = ata_read_log_page(dev, ATA_LOG_SATA_ID_DEV_DATA,
+ ATA_LOG_ZONED_INFORMATION,
+ identify_buf, 1);
+ if (!err_mask) {
+ u64 zoned_cap, opt_open, opt_nonseq, max_open;
+
+ zoned_cap = get_unaligned_le64(&identify_buf[8]);
+ if ((zoned_cap >> 63))
+ dev->zac_zoned_cap = (zoned_cap & 1);
+ opt_open = get_unaligned_le64(&identify_buf[24]);
+ if ((opt_open >> 63))
+ dev->zac_zones_optimal_open = (u32)opt_open;
+ opt_nonseq = get_unaligned_le64(&identify_buf[32]);
+ if ((opt_nonseq >> 63))
+ dev->zac_zones_optimal_nonseq = (u32)opt_nonseq;
+ max_open = get_unaligned_le64(&identify_buf[40]);
+ if ((max_open >> 63))
+ dev->zac_zones_max_open = (u32)max_open;
+ }
+}
+
/**
* ata_dev_configure - Configure the specified ATA/ATAPI device
* @dev: Target device to configure
@@ -2389,6 +2438,7 @@ int ata_dev_configure(struct ata_device *dev)
}
}
ata_dev_config_sense_reporting(dev);
+ ata_dev_config_zac(dev);
dev->cdb_len = 16;
}
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index ff95ef6..9b84155 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -2138,6 +2138,7 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
*/
static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf)
{
+ int num_pages;
const u8 pages[] = {
0x00, /* page 0x00, this page */
0x80, /* page 0x80, unit serial no page */
@@ -2146,10 +2147,14 @@ static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf)
0xb0, /* page 0xb0, block limits page */
0xb1, /* page 0xb1, block device characteristics page */
0xb2, /* page 0xb2, thin provisioning page */
+ 0xb6, /* page 0xb6, zoned block device characteristics */
};
- rbuf[3] = sizeof(pages); /* number of supported VPD pages */
- memcpy(rbuf + 4, pages, sizeof(pages));
+ num_pages = sizeof(pages);
+ if (!(args->dev->flags & ATA_DFLAG_ZAC))
+ num_pages--;
+ rbuf[3] = num_pages; /* number of supported VPD pages */
+ memcpy(rbuf + 4, pages, num_pages);
return 0;
}
@@ -2337,6 +2342,26 @@ static unsigned int ata_scsiop_inq_b2(struct ata_scsi_args *args, u8 *rbuf)
return 0;
}
+static unsigned int ata_scsiop_inq_b6(struct ata_scsi_args *args, u8 *rbuf)
+{
+ /*
+ * zbc-r05 SCSI Zoned Block device characteristics VPD page
+ */
+ rbuf[1] = 0xb6;
+ rbuf[3] = 0x3C;
+
+ /*
+ * URSWRZ bit is only meaningful for host-managed ZAC drives
+ */
+ if (args->dev->zac_zoned_cap & 1)
+ rbuf[4] |= 1;
+ put_unaligned_be32(args->dev->zac_zones_optimal_open, &rbuf[8]);
+ put_unaligned_be32(args->dev->zac_zones_optimal_nonseq, &rbuf[12]);
+ put_unaligned_be32(args->dev->zac_zones_max_open, &rbuf[16]);
+
+ return 0;
+}
+
/**
* ata_scsiop_noop - Command handler that simply returns success.
* @args: device IDENTIFY data / SCSI command of interest.
@@ -2654,6 +2679,9 @@ static unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf)
rbuf[14] |= 0x40; /* LBPRZ */
}
}
+ if (ata_id_zoned_cap(args->id) ||
+ args->dev->class == ATA_DEV_ZAC)
+ rbuf[12] = (1 << 4); /* RC_BASIS */
}
return 0;
}
@@ -4022,6 +4050,12 @@ void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd)
case 0xb2:
ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b2);
break;
+ case 0xb6:
+ if (dev->flags & ATA_DFLAG_ZAC) {
+ ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b6);
+ break;
+ }
+ /* Fallthrough */
default:
ata_scsi_invalid_field(dev, cmd, 2);
break;
diff --git a/include/linux/ata.h b/include/linux/ata.h
index 4ad7363..e4b120d 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -325,6 +325,7 @@ enum {
ATA_LOG_NCQ_SEND_RECV = 0x13,
ATA_LOG_SATA_ID_DEV_DATA = 0x30,
ATA_LOG_SATA_SETTINGS = 0x08,
+ ATA_LOG_ZONED_INFORMATION = 0x09,
ATA_LOG_DEVSLP_OFFSET = 0x30,
ATA_LOG_DEVSLP_SIZE = 0x08,
ATA_LOG_DEVSLP_MDAT = 0x00,
diff --git a/include/linux/libata.h b/include/linux/libata.h
index a418bca..13da8f2 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -181,6 +181,7 @@ enum {
ATA_DFLAG_DEVSLP = (1 << 27), /* device supports Device Sleep */
ATA_DFLAG_ACPI_DISABLED = (1 << 28), /* ACPI for the device is disabled */
ATA_DFLAG_D_SENSE = (1 << 29), /* Descriptor sense requested */
+ ATA_DFLAG_ZAC = (1 << 30), /* ZAC device */
ATA_DEV_UNKNOWN = 0, /* unknown device */
ATA_DEV_ATA = 1, /* ATA device */
@@ -729,6 +730,12 @@ struct ata_device {
/* NCQ send and receive log subcommand support */
u8 ncq_send_recv_cmds[ATA_LOG_NCQ_SEND_RECV_SIZE];
+ /* ZAC zone configuration */
+ u32 zac_zoned_cap;
+ u32 zac_zones_optimal_open;
+ u32 zac_zones_optimal_nonseq;
+ u32 zac_zones_max_open;
+
/* error history */
int spdn_cnt;
/* ering is CLEAR_END, read comment above CLEAR_END */
--
1.8.5.6
^ permalink raw reply related [flat|nested] 13+ messages in thread* Re: [PATCH 0/4] libata: ZAC support
2016-04-04 9:47 [PATCH 0/4] libata: ZAC support Hannes Reinecke
` (3 preceding siblings ...)
2016-04-04 9:47 ` [PATCH 4/4] libata: support host-aware and host-managed " Hannes Reinecke
@ 2016-04-04 15:50 ` Tejun Heo
4 siblings, 0 replies; 13+ messages in thread
From: Tejun Heo @ 2016-04-04 15:50 UTC (permalink / raw)
To: Hannes Reinecke
Cc: linux-ide, Martin K. Petersen, Christoph Hellwig, Shaun Tancheff,
Damien Le Moal, linux-scsi, Sathya Prakash
Hello, Hannes.
Except for the minor nits, looks good to me. Will wait for refresh
and apply to libata/for-4.7-zac.
Thanks.
--
tejun
^ permalink raw reply [flat|nested] 13+ messages in thread