diff options
| author | John Snow <jsnow@redhat.com> | 2015-07-04 02:06:05 -0400 |
|---|---|---|
| committer | John Snow <jsnow@redhat.com> | 2015-07-04 02:06:05 -0400 |
| commit | c82bd3c893825fc76af3634f5461f5eabd94e9df (patch) | |
| tree | 1923f2cac9d3ea441dac00806796fe34832d0db8 /hw/ide/ahci.c | |
| parent | 7f6cf5ee1236d94fc25830a47438e57aa294d9fe (diff) | |
ahci: add cmd header to ncq transfer state
While the rest of the AHCI device can rely on a single bookmarked
pointer for the AHCI Command Header currently being processed, NCQ
is asynchronous and may have many commands in flight simultaneously.
Add a cmdh pointer to the ncq_tfs object and make the sglist prepare
function take an AHCICmdHeader pointer so we can be explicit about
where we'd like to build SGlists from.
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435767578-32743-11-git-send-email-jsnow@redhat.com
Diffstat (limited to 'hw/ide/ahci.c')
| -rw-r--r-- | hw/ide/ahci.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c index 1027a60a9b..b77512b0a0 100644 --- a/hw/ide/ahci.c +++ b/hw/ide/ahci.c @@ -833,9 +833,8 @@ static int prdt_tbl_entry_size(const AHCI_SG *tbl) } static int ahci_populate_sglist(AHCIDevice *ad, QEMUSGList *sglist, - int64_t limit, int32_t offset) + AHCICmdHdr *cmd, int64_t limit, int32_t offset) { - AHCICmdHdr *cmd = ad->cur_cmd; uint16_t opts = le16_to_cpu(cmd->opts); uint16_t prdtl = le16_to_cpu(cmd->prdtl); uint64_t cfis_addr = le64_to_cpu(cmd->tbl_addr); @@ -1058,6 +1057,7 @@ static void process_ncq_command(AHCIState *s, int port, uint8_t *cmd_fis, ncq_tfs->used = 1; ncq_tfs->drive = ad; ncq_tfs->slot = slot; + ncq_tfs->cmdh = &((AHCICmdHdr *)ad->lst)[slot]; ncq_tfs->cmd = ncq_fis->command; ncq_tfs->lba = ((uint64_t)ncq_fis->lba5 << 40) | ((uint64_t)ncq_fis->lba4 << 32) | @@ -1092,7 +1092,7 @@ static void process_ncq_command(AHCIState *s, int port, uint8_t *cmd_fis, ncq_tfs->sector_count = 0x10000; } size = ncq_tfs->sector_count * 512; - ahci_populate_sglist(ad, &ncq_tfs->sglist, size, 0); + ahci_populate_sglist(ad, &ncq_tfs->sglist, ncq_tfs->cmdh, size, 0); if (ncq_tfs->sglist.size < size) { error_report("ahci: PRDT length for NCQ command (0x%zx) " @@ -1362,7 +1362,8 @@ static int32_t ahci_dma_prepare_buf(IDEDMA *dma, int32_t limit) AHCIDevice *ad = DO_UPCAST(AHCIDevice, dma, dma); IDEState *s = &ad->port.ifs[0]; - if (ahci_populate_sglist(ad, &s->sg, limit, s->io_buffer_offset) == -1) { + if (ahci_populate_sglist(ad, &s->sg, ad->cur_cmd, + limit, s->io_buffer_offset) == -1) { DPRINTF(ad->port_no, "ahci_dma_prepare_buf failed.\n"); return -1; } @@ -1397,7 +1398,7 @@ static int ahci_dma_rw_buf(IDEDMA *dma, int is_write) uint8_t *p = s->io_buffer + s->io_buffer_index; int l = s->io_buffer_size - s->io_buffer_index; - if (ahci_populate_sglist(ad, &s->sg, l, s->io_buffer_offset)) { + if (ahci_populate_sglist(ad, &s->sg, ad->cur_cmd, l, s->io_buffer_offset)) { return 0; } |