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authorJens Axboe <axboe@suse.de>2006-01-06 09:28:07 +0100
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-06 08:36:09 -0800
commit9b847548663ef1039dd49f0eb4463d001e596bc3 (patch)
tree105a0eece522b1347bea57f609f6c04ed673fdb3 /include/linux
parent88202a0c84e1951d6630d1d557d4801a8cc5b5ef (diff)
[PATCH] Suspend support for libata
This patch adds suspend patch to libata, and ata_piix in particular. For most low level drivers, they should just need to add the 4 hooks to work. As I can only test ata_piix, I didn't enable it for more though. Suspend support is the single most important feature on a notebook, and most new notebooks have sata drives. It's quite embarrassing that we _still_ do not support this. Right now, it's perfectly possible to suspend the drive in mid-transfer. Signed-off-by: Jens Axboe <axboe@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/ata.h2
-rw-r--r--include/linux/libata.h8
2 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/ata.h b/include/linux/ata.h
index d2873b732bb..3eb80c391b3 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -141,6 +141,8 @@ enum {
ATA_CMD_PACKET = 0xA0,
ATA_CMD_VERIFY = 0x40,
ATA_CMD_VERIFY_EXT = 0x42,
+ ATA_CMD_STANDBYNOW1 = 0xE0,
+ ATA_CMD_IDLEIMMEDIATE = 0xE1,
ATA_CMD_INIT_DEV_PARAMS = 0x91,
/* SETFEATURES stuff */
diff --git a/include/linux/libata.h b/include/linux/libata.h
index e828e172ccb..cdab75c209a 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -124,6 +124,8 @@ enum {
ATA_FLAG_DEBUGMSG = (1 << 10),
ATA_FLAG_NO_ATAPI = (1 << 11), /* No ATAPI support */
+ ATA_FLAG_SUSPENDED = (1 << 12), /* port is suspended */
+
ATA_QCFLAG_ACTIVE = (1 << 1), /* cmd not yet ack'd to scsi lyer */
ATA_QCFLAG_SG = (1 << 3), /* have s/g table? */
ATA_QCFLAG_SINGLE = (1 << 4), /* no s/g, just a single buffer */
@@ -436,6 +438,8 @@ extern void ata_std_ports(struct ata_ioports *ioaddr);
extern int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
unsigned int n_ports);
extern void ata_pci_remove_one (struct pci_dev *pdev);
+extern int ata_pci_device_suspend(struct pci_dev *pdev, pm_message_t state);
+extern int ata_pci_device_resume(struct pci_dev *pdev);
#endif /* CONFIG_PCI */
extern int ata_device_add(const struct ata_probe_ent *ent);
extern void ata_host_set_remove(struct ata_host_set *host_set);
@@ -445,6 +449,10 @@ extern int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmn
extern int ata_scsi_error(struct Scsi_Host *host);
extern int ata_scsi_release(struct Scsi_Host *host);
extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_cmd *qc);
+extern int ata_scsi_device_resume(struct scsi_device *);
+extern int ata_scsi_device_suspend(struct scsi_device *);
+extern int ata_device_resume(struct ata_port *, struct ata_device *);
+extern int ata_device_suspend(struct ata_port *, struct ata_device *);
extern int ata_ratelimit(void);
/*