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| author | Christoph Hellwig <hch@lst.de> | 2015-04-17 22:37:20 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-05-05 13:40:42 -0600 |
| commit | a7928c1578c550bd6f4dec62d65132e6db226c57 (patch) | |
| tree | 1a9a13abf0679e7dc4e1e5124cd4fcb3c0ac1265 /include/linux/ide.h | |
| parent | ac7cdff00a33d48d27217560fa3b16d802e5f535 (diff) | |
| download | lwn-a7928c1578c550bd6f4dec62d65132e6db226c57.tar.gz lwn-a7928c1578c550bd6f4dec62d65132e6db226c57.zip | |
block: move PM request support to IDE
This removes the request types and hacks from the block code and into the
old IDE driver. There is a small amunt of code duplication due to this,
but it's not too bad.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'include/linux/ide.h')
| -rw-r--r-- | include/linux/ide.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/include/linux/ide.h b/include/linux/ide.h index 9856b7d455d9..a633898f36ac 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -44,8 +44,14 @@ enum ata_cmd_type_bits { REQ_TYPE_ATA_TASKFILE = REQ_TYPE_DRV_PRIV + 1, REQ_TYPE_ATA_PC, REQ_TYPE_ATA_SENSE, /* sense request */ + REQ_TYPE_ATA_PM_SUSPEND,/* suspend request */ + REQ_TYPE_ATA_PM_RESUME, /* resume request */ }; +#define ata_pm_request(rq) \ + ((rq)->cmd_type == REQ_TYPE_ATA_PM_SUSPEND || \ + (rq)->cmd_type == REQ_TYPE_ATA_PM_RESUME) + /* Error codes returned in rq->errors to the higher part of the driver. */ enum { IDE_DRV_ERROR_GENERAL = 101, @@ -1321,6 +1327,19 @@ struct ide_port_info { u8 udma_mask; }; +/* + * State information carried for REQ_TYPE_ATA_PM_SUSPEND and REQ_TYPE_ATA_PM_RESUME + * requests. + */ +struct ide_pm_state { + /* PM state machine step value, currently driver specific */ + int pm_step; + /* requested PM state value (S1, S2, S3, S4, ...) */ + u32 pm_state; + void* data; /* for driver use */ +}; + + int ide_pci_init_one(struct pci_dev *, const struct ide_port_info *, void *); int ide_pci_init_two(struct pci_dev *, struct pci_dev *, const struct ide_port_info *, void *); |