*
*/
+#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/blkdev.h>
#include <linux/spinlock.h>
#include <linux/hdreg.h>
#include <linux/uaccess.h>
#include <linux/suspend.h>
+#include <asm/unaligned.h>
#include "libata.h"
*/
for (i = 1; i < ARRAY_SIZE(link_pm_policy); i++) {
const int len = strlen(link_pm_policy[i].name);
- if (strncmp(link_pm_policy[i].name, buf, len) == 0 &&
- buf[len] == '\n') {
+ if (strncmp(link_pm_policy[i].name, buf, len) == 0) {
policy = link_pm_policy[i].value;
break;
}
dev->flags |= ATA_DFLAG_NO_UNLOAD;
/* configure max sectors */
- blk_queue_max_sectors(sdev->request_queue, dev->max_sectors);
+ blk_queue_max_hw_sectors(sdev->request_queue, dev->max_sectors);
if (dev->class == ATA_DEV_ATAPI) {
struct request_queue *q = sdev->request_queue;
blk_queue_dma_drain(q, atapi_drain_needed, buf, ATAPI_MAX_DRAIN);
} else {
- if (ata_id_is_ssd(dev->id))
- queue_flag_set_unlocked(QUEUE_FLAG_NONROT,
- sdev->request_queue);
-
/* ATA devices must be sector aligned */
blk_queue_update_dma_alignment(sdev->request_queue,
ATA_SECT_SIZE - 1);
* ata_scsi_change_queue_depth - SCSI callback for queue depth config
* @sdev: SCSI device to configure queue depth for
* @queue_depth: new queue depth
+ * @reason: calling context
*
* This is libata standard hostt->change_queue_depth callback.
* SCSI will call into this callback when user tries to set queue
* RETURNS:
* Newly configured queue depth.
*/
-int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth)
+int ata_scsi_change_queue_depth(struct scsi_device *sdev, int queue_depth,
+ int reason)
{
struct ata_port *ap = ata_shost_to_port(sdev->host);
struct ata_device *dev;
unsigned long flags;
+ if (reason != SCSI_QDEPTH_DEFAULT)
+ return -EOPNOTSUPP;
+
if (queue_depth < 1 || queue_depth == sdev->queue_depth)
return sdev->queue_depth;
0x80, /* page 0x80, unit serial no page */
0x83, /* page 0x83, device ident page */
0x89, /* page 0x89, ata info page */
+ 0xb0, /* page 0xb0, block limits page */
0xb1, /* page 0xb1, block device characteristics page */
};
return 0;
}
+static unsigned int ata_scsiop_inq_b0(struct ata_scsi_args *args, u8 *rbuf)
+{
+ u32 min_io_sectors;
+
+ rbuf[1] = 0xb0;
+ rbuf[3] = 0x3c; /* required VPD size with unmap support */
+
+ /*
+ * Optimal transfer length granularity.
+ *
+ * This is always one physical block, but for disks with a smaller
+ * logical than physical sector size we need to figure out what the
+ * latter is.
+ */
+ if (ata_id_has_large_logical_sectors(args->id))
+ min_io_sectors = ata_id_logical_per_physical_sectors(args->id);
+ else
+ min_io_sectors = 1;
+ put_unaligned_be16(min_io_sectors, &rbuf[6]);
+
+ /*
+ * Optimal unmap granularity.
+ *
+ * The ATA spec doesn't even know about a granularity or alignment
+ * for the TRIM command. We can leave away most of the unmap related
+ * VPD page entries, but we have specifify a granularity to signal
+ * that we support some form of unmap - in thise case via WRITE SAME
+ * with the unmap bit set.
+ */
+ if (ata_id_has_trim(args->id)) {
+ put_unaligned_be32(65535 * 512 / 8, &rbuf[20]);
+ put_unaligned_be32(1, &rbuf[28]);
+ }
+
+ return 0;
+}
+
static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf)
{
int form_factor = ata_id_form_factor(args->id);
rbuf[13] = log_per_phys;
rbuf[14] = (lowest_aligned >> 8) & 0x3f;
rbuf[15] = lowest_aligned;
+
+ if (ata_id_has_trim(args->id)) {
+ rbuf[14] |= 0x80; /* TPE */
+
+ if (ata_id_has_zero_after_trim(args->id))
+ rbuf[14] |= 0x40; /* TPRZ */
+ }
}
return 0;
goto invalid_fld;
/*
- * Filter TPM commands by default. These provide an
- * essentially uncontrolled encrypted "back door" between
- * applications and the disk. Set libata.allow_tpm=1 if you
- * have a real reason for wanting to use them. This ensures
- * that installed software cannot easily mess stuff up without
- * user intent. DVR type users will probably ship with this enabled
- * for movie content management.
- *
- * Note that for ATA8 we can issue a DCS change and DCS freeze lock
- * for this and should do in future but that it is not sufficient as
- * DCS is an optional feature set. Thus we also do the software filter
- * so that we comply with the TC consortium stated goal that the user
- * can turn off TC features of their system.
- */
- if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm)
- goto invalid_fld;
-
- /* We may not issue DMA commands if no DMA mode is set */
- if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0)
- goto invalid_fld;
-
- /*
* 12 and 16 byte CDBs use different offsets to
* provide the various register values.
*/
tf->device = dev->devno ?
tf->device | ATA_DEV1 : tf->device & ~ATA_DEV1;
+ /* READ/WRITE LONG use a non-standard sect_size */
+ qc->sect_size = ATA_SECT_SIZE;
+ switch (tf->command) {
+ case ATA_CMD_READ_LONG:
+ case ATA_CMD_READ_LONG_ONCE:
+ case ATA_CMD_WRITE_LONG:
+ case ATA_CMD_WRITE_LONG_ONCE:
+ if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1)
+ goto invalid_fld;
+ qc->sect_size = scsi_bufflen(scmd);
+ }
+
+ /*
+ * Set flags so that all registers will be written, pass on
+ * write indication (used for PIO/DMA setup), result TF is
+ * copied back and we don't whine too much about its failure.
+ */
+ tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
+ if (scmd->sc_data_direction == DMA_TO_DEVICE)
+ tf->flags |= ATA_TFLAG_WRITE;
+
+ qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET;
+
+ /*
+ * Set transfer length.
+ *
+ * TODO: find out if we need to do more here to
+ * cover scatter/gather case.
+ */
+ ata_qc_set_pc_nbytes(qc);
+
+ /* We may not issue DMA commands if no DMA mode is set */
+ if (tf->protocol == ATA_PROT_DMA && dev->dma_mode == 0)
+ goto invalid_fld;
+
/* sanity check for pio multi commands */
if ((cdb[1] & 0xe0) && !is_multi_taskfile(tf))
goto invalid_fld;
multi_count);
}
- /* READ/WRITE LONG use a non-standard sect_size */
- qc->sect_size = ATA_SECT_SIZE;
- switch (tf->command) {
- case ATA_CMD_READ_LONG:
- case ATA_CMD_READ_LONG_ONCE:
- case ATA_CMD_WRITE_LONG:
- case ATA_CMD_WRITE_LONG_ONCE:
- if (tf->protocol != ATA_PROT_PIO || tf->nsect != 1)
- goto invalid_fld;
- qc->sect_size = scsi_bufflen(scmd);
- }
-
/*
* Filter SET_FEATURES - XFER MODE command -- otherwise,
* SET_FEATURES - XFER MODE must be preceded/succeeded
* controller (i.e. the reason for ->set_piomode(),
* ->set_dmamode(), and ->post_set_mode() hooks).
*/
- if ((tf->command == ATA_CMD_SET_FEATURES)
- && (tf->feature == SETFEATURES_XFER))
+ if (tf->command == ATA_CMD_SET_FEATURES &&
+ tf->feature == SETFEATURES_XFER)
goto invalid_fld;
/*
- * Set flags so that all registers will be written,
- * and pass on write indication (used for PIO/DMA
- * setup.)
+ * Filter TPM commands by default. These provide an
+ * essentially uncontrolled encrypted "back door" between
+ * applications and the disk. Set libata.allow_tpm=1 if you
+ * have a real reason for wanting to use them. This ensures
+ * that installed software cannot easily mess stuff up without
+ * user intent. DVR type users will probably ship with this enabled
+ * for movie content management.
+ *
+ * Note that for ATA8 we can issue a DCS change and DCS freeze lock
+ * for this and should do in future but that it is not sufficient as
+ * DCS is an optional feature set. Thus we also do the software filter
+ * so that we comply with the TC consortium stated goal that the user
+ * can turn off TC features of their system.
*/
- tf->flags |= (ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE);
+ if (tf->command >= 0x5C && tf->command <= 0x5F && !libata_allow_tpm)
+ goto invalid_fld;
- if (scmd->sc_data_direction == DMA_TO_DEVICE)
- tf->flags |= ATA_TFLAG_WRITE;
+ return 0;
+
+ invalid_fld:
+ ata_scsi_set_sense(scmd, ILLEGAL_REQUEST, 0x24, 0x00);
+ /* "Invalid field in cdb" */
+ return 1;
+}
+
+static unsigned int ata_scsi_write_same_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;
+ u64 block;
+ u32 n_block;
+ u32 size;
+ void *buf;
+
+ /* we may not issue DMA commands if no DMA mode is set */
+ if (unlikely(!dev->dma_mode))
+ goto invalid_fld;
+
+ if (unlikely(scmd->cmd_len < 16))
+ goto invalid_fld;
+ scsi_16_lba_len(cdb, &block, &n_block);
+
+ /* for now we only support WRITE SAME with the unmap bit set */
+ if (unlikely(!(cdb[1] & 0x8)))
+ goto invalid_fld;
/*
- * Set transfer length.
- *
- * TODO: find out if we need to do more here to
- * cover scatter/gather case.
+ * WRITE SAME always has a sector sized buffer as payload, this
+ * should never be a multiple entry S/G list.
*/
- ata_qc_set_pc_nbytes(qc);
+ if (!scsi_sg_count(scmd))
+ goto invalid_fld;
- /* request result TF and be quiet about device error */
- qc->flags |= ATA_QCFLAG_RESULT_TF | ATA_QCFLAG_QUIET;
+ buf = page_address(sg_page(scsi_sglist(scmd)));
+ size = ata_set_lba_range_entries(buf, 512, block, n_block);
+
+ tf->protocol = ATA_PROT_DMA;
+ tf->hob_feature = 0;
+ tf->feature = ATA_DSM_TRIM;
+ tf->hob_nsect = (size / 512) >> 8;
+ tf->nsect = size / 512;
+ tf->command = ATA_CMD_DSM;
+ tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE | ATA_TFLAG_LBA48 |
+ ATA_TFLAG_WRITE;
+
+ ata_qc_set_pc_nbytes(qc);
return 0;
case WRITE_16:
return ata_scsi_rw_xlat;
+ case WRITE_SAME_16:
+ return ata_scsi_write_same_xlat;
+
case SYNCHRONIZE_CACHE:
if (ata_try_flush_cache(dev))
return ata_scsi_flush_xlat;
case 0x89:
ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89);
break;
+ case 0xb0:
+ ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b0);
+ break;
case 0xb1:
ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1);
break;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff