diff options
Diffstat (limited to 'hw/ide/core.c')
| -rw-r--r-- | hw/ide/core.c | 97 |
1 files changed, 95 insertions, 2 deletions
diff --git a/hw/ide/core.c b/hw/ide/core.c index 14bda82fd5..ca17a436c0 100644 --- a/hw/ide/core.c +++ b/hw/ide/core.c @@ -78,7 +78,7 @@ static void ide_identify(IDEState *s) { uint16_t *p; unsigned int oldsize; - IDEDevice *dev; + IDEDevice *dev = s->unit ? s->bus->slave : s->bus->master; if (s->identify_set) { memcpy(s->io_buffer, s->identify_data, sizeof(s->identify_data)); @@ -124,6 +124,9 @@ static void ide_identify(IDEState *s) put_le16(p + 66, 120); put_le16(p + 67, 120); put_le16(p + 68, 120); + if (dev && dev->conf.discard_granularity) { + put_le16(p + 69, (1 << 14)); /* determinate TRIM behavior */ + } if (s->ncq_queues) { put_le16(p + 75, s->ncq_queues - 1); @@ -154,9 +157,12 @@ static void ide_identify(IDEState *s) put_le16(p + 101, s->nb_sectors >> 16); put_le16(p + 102, s->nb_sectors >> 32); put_le16(p + 103, s->nb_sectors >> 48); - dev = s->unit ? s->bus->slave : s->bus->master; + if (dev && dev->conf.physical_block_size) put_le16(p + 106, 0x6000 | get_physical_block_exp(&dev->conf)); + if (dev && dev->conf.discard_granularity) { + put_le16(p + 169, 1); /* TRIM support */ + } memcpy(s->identify_data, p, sizeof(s->identify_data)); s->identify_set = 1; @@ -299,6 +305,74 @@ static void ide_set_signature(IDEState *s) } } +typedef struct TrimAIOCB { + BlockDriverAIOCB common; + QEMUBH *bh; + int ret; +} TrimAIOCB; + +static void trim_aio_cancel(BlockDriverAIOCB *acb) +{ + TrimAIOCB *iocb = container_of(acb, TrimAIOCB, common); + + qemu_bh_delete(iocb->bh); + iocb->bh = NULL; + qemu_aio_release(iocb); +} + +static AIOPool trim_aio_pool = { + .aiocb_size = sizeof(TrimAIOCB), + .cancel = trim_aio_cancel, +}; + +static void ide_trim_bh_cb(void *opaque) +{ + TrimAIOCB *iocb = opaque; + + iocb->common.cb(iocb->common.opaque, iocb->ret); + + qemu_bh_delete(iocb->bh); + iocb->bh = NULL; + + qemu_aio_release(iocb); +} + +BlockDriverAIOCB *ide_issue_trim(BlockDriverState *bs, + int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, + BlockDriverCompletionFunc *cb, void *opaque) +{ + TrimAIOCB *iocb; + int i, j, ret; + + iocb = qemu_aio_get(&trim_aio_pool, bs, cb, opaque); + iocb->bh = qemu_bh_new(ide_trim_bh_cb, iocb); + iocb->ret = 0; + + for (j = 0; j < qiov->niov; j++) { + uint64_t *buffer = qiov->iov[j].iov_base; + + for (i = 0; i < qiov->iov[j].iov_len / 8; i++) { + /* 6-byte LBA + 2-byte range per entry */ + uint64_t entry = le64_to_cpu(buffer[i]); + uint64_t sector = entry & 0x0000ffffffffffffULL; + uint16_t count = entry >> 48; + + if (count == 0) { + break; + } + + ret = bdrv_discard(bs, sector, count); + if (!iocb->ret) { + iocb->ret = ret; + } + } + } + + qemu_bh_schedule(iocb->bh); + + return &iocb->common; +} + static inline void ide_abort_command(IDEState *s) { s->status = READY_STAT | ERR_STAT; @@ -474,6 +548,9 @@ handle_rw_error: if (s->dma_cmd == IDE_DMA_READ) op |= BM_STATUS_RETRY_READ; + else if (s->dma_cmd == IDE_DMA_TRIM) + op |= BM_STATUS_RETRY_TRIM; + if (ide_handle_rw_error(s, -ret, op)) { return; } @@ -519,6 +596,10 @@ handle_rw_error: s->bus->dma->aiocb = dma_bdrv_write(s->bs, &s->sg, sector_num, ide_dma_cb, s); break; + case IDE_DMA_TRIM: + s->bus->dma->aiocb = dma_bdrv_io(s->bs, &s->sg, sector_num, + ide_issue_trim, ide_dma_cb, s, 1); + break; } if (!s->bus->dma->aiocb) { @@ -818,6 +899,18 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val) return; switch(val) { + case WIN_DSM: + switch (s->feature) { + case DSM_TRIM: + if (!s->bs) { + goto abort_cmd; + } + ide_sector_start_dma(s, IDE_DMA_TRIM); + break; + default: + goto abort_cmd; + } + break; case WIN_IDENTIFY: if (s->bs && s->drive_kind != IDE_CD) { if (s->drive_kind != IDE_CFATA) |