diff options
| author | Christoph Hellwig <hch@lst.de> | 2011-05-19 10:58:19 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2011-06-15 14:36:16 +0200 |
| commit | d353fb72f59cd0e1f67baf773e74719cda761a89 (patch) | |
| tree | 994311cabf1fd896af097c7165fa4176b991c09c /hw/ide/internal.h | |
| parent | 4e1e00515e2522bbae98a0653ea2692ec20851ac (diff) | |
| download | qemu-d353fb72f59cd0e1f67baf773e74719cda761a89.tar.gz | |
ide: add TRIM support
Add support for TRIM sub function of the data set management command,
and wire it up to the qemu discard infrastructure.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'hw/ide/internal.h')
| -rw-r--r-- | hw/ide/internal.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/hw/ide/internal.h b/hw/ide/internal.h index ea3edf5c33..02e805f070 100644 --- a/hw/ide/internal.h +++ b/hw/ide/internal.h @@ -62,7 +62,11 @@ typedef struct IDEDMAOps IDEDMAOps; */ #define CFA_REQ_EXT_ERROR_CODE 0x03 /* CFA Request Extended Error Code */ /* - * 0x04->0x07 Reserved + * 0x04->0x05 Reserved + */ +#define WIN_DSM 0x06 +/* + * 0x07 Reserved */ #define WIN_SRST 0x08 /* ATAPI soft reset command */ #define WIN_DEVICE_RESET 0x08 @@ -190,6 +194,9 @@ typedef struct IDEDMAOps IDEDMAOps; #define IDE_DMA_BUF_SECTORS 256 +/* feature values for Data Set Management */ +#define DSM_TRIM 0x01 + #if (IDE_DMA_BUF_SECTORS < MAX_MULT_SECTORS) #error "IDE_DMA_BUF_SECTORS must be bigger or equal to MAX_MULT_SECTORS" #endif @@ -382,6 +389,7 @@ struct unreported_events { enum ide_dma_cmd { IDE_DMA_READ, IDE_DMA_WRITE, + IDE_DMA_TRIM, }; #define ide_cmd_is_read(s) \ @@ -521,6 +529,7 @@ struct IDEDeviceInfo { #define BM_STATUS_PIO_RETRY 0x10 #define BM_STATUS_RETRY_READ 0x20 #define BM_STATUS_RETRY_FLUSH 0x40 +#define BM_STATUS_RETRY_TRIM 0x80 #define BM_MIGRATION_COMPAT_STATUS_BITS \ (BM_STATUS_DMA_RETRY | BM_STATUS_PIO_RETRY | \ @@ -591,6 +600,9 @@ void ide_transfer_start(IDEState *s, uint8_t *buf, int size, EndTransferFunc *end_transfer_func); void ide_transfer_stop(IDEState *s); void ide_set_inactive(IDEState *s); +BlockDriverAIOCB *ide_issue_trim(BlockDriverState *bs, + int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, + BlockDriverCompletionFunc *cb, void *opaque); /* hw/ide/atapi.c */ void ide_atapi_cmd(IDEState *s); |