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ide: abort TRIM operation for invalid range

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ATA8-ACS3, 7.9 DATA SET MANAGEMENT - 06h, DMA

    7.9.5 Error Outputs
    If the Trim bit is set to one and:
      a) the device detects an invalid LBA Range Entry; or
      b) count is greater than IDENTIFY DEVICE data word 105
         (see 7.16.7.55),
    then the device shall return command aborted.
    A device may trim one or more LBA Range Entries before it returns
    command aborted. See table 209.

This check is not in the common ide_dma_cb() as the range for TRIM
is harder to reach: it is not in LBA/count registers and the buffer has
to be parsed first.

Signed-off-by: Anton Nefedov <anton.nefedov@virtuozzo.com>
Message-id: 1512735034-35327-4-git-send-email-anton.nefedov@virtuozzo.com
Signed-off-by: John Snow <jsnow@redhat.com>
This commit is contained in:
Anton Nefedov 2017-12-08 15:10:34 +03:00 committed by John Snow
parent d8b070fed2
commit 947858b0ba
1 changed files with 13 additions and 2 deletions
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13
hw/ide/core.c
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@ -400,6 +400,7 @@ typedef struct TrimAIOCB {
QEMUIOVector *qiov;
BlockAIOCB *aiocb;
int i, j;
bool is_invalid;
} TrimAIOCB;
static void trim_aio_cancel(BlockAIOCB *acb)
@ -427,8 +428,11 @@ static void ide_trim_bh_cb(void *opaque)
{
TrimAIOCB *iocb = opaque;
if (iocb->is_invalid) {
ide_dma_error(iocb->s);
} else {
iocb->common.cb(iocb->common.opaque, iocb->ret);
}
qemu_bh_delete(iocb->bh);
iocb->bh = NULL;
qemu_aio_unref(iocb);
@ -455,6 +459,11 @@ static void ide_issue_trim_cb(void *opaque, int ret)
continue;
}
if (!ide_sect_range_ok(s, sector, count)) {
iocb->is_invalid = true;
goto done;
}
/* Got an entry! Submit and exit. */
iocb->aiocb = blk_aio_pdiscard(s->blk,
sector << BDRV_SECTOR_BITS,
@ -470,6 +479,7 @@ static void ide_issue_trim_cb(void *opaque, int ret)
iocb->ret = ret;
}
done:
iocb->aiocb = NULL;
if (iocb->bh) {
qemu_bh_schedule(iocb->bh);
@ -490,6 +500,7 @@ BlockAIOCB *ide_issue_trim(
iocb->qiov = qiov;
iocb->i = -1;
iocb->j = 0;
iocb->is_invalid = false;
ide_issue_trim_cb(iocb, 0);
return &iocb->common;
}