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authorJohn Snow <jsnow@redhat.com>2015-07-04 02:06:04 -0400
committerJohn Snow <jsnow@redhat.com>2015-07-04 02:06:04 -0400
commit4614619ee4ad96d2715dc41f9430fb43335c15d2 (patch)
treeb73ebe441895cc5cfb0162827d1c8c6532bb1f6a /hw/ide
parenta718978ed58abc1ad92567a9c17525136be02a71 (diff)
ahci: stash ncq command
For migration and werror=stop/rerror=stop resume purposes, it will be convenient to have the command handy inside of ncq_tfs. Eventually, we'd like to avoid reading from the FIS entirely after the initial read, so this is a byte (hah!) sized step in that direction. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 1435767578-32743-3-git-send-email-jsnow@redhat.com
Diffstat (limited to 'hw/ide')
-rw-r--r--hw/ide/ahci.c3
-rw-r--r--hw/ide/ahci.h1
2 files changed, 3 insertions, 1 deletions
diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c
index de1759a24d..9540a64a39 100644
--- a/hw/ide/ahci.c
+++ b/hw/ide/ahci.c
@@ -996,6 +996,7 @@ 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->cmd = ncq_fis->command;
ncq_tfs->lba = ((uint64_t)ncq_fis->lba5 << 40) |
((uint64_t)ncq_fis->lba4 << 32) |
((uint64_t)ncq_fis->lba3 << 24) |
@@ -1047,7 +1048,7 @@ static void process_ncq_command(AHCIState *s, int port, uint8_t *cmd_fis,
ncq_tfs->lba, ncq_tfs->lba + ncq_tfs->sector_count - 1,
ide_state->nb_sectors - 1);
- switch(ncq_fis->command) {
+ switch (ncq_tfs->cmd) {
case READ_FPDMA_QUEUED:
DPRINTF(port, "NCQ reading %d sectors from LBA %"PRId64", "
"tag %d\n",
diff --git a/hw/ide/ahci.h b/hw/ide/ahci.h
index b8872a4e4d..33607d7fad 100644
--- a/hw/ide/ahci.h
+++ b/hw/ide/ahci.h
@@ -259,6 +259,7 @@ typedef struct NCQTransferState {
uint16_t sector_count;
uint64_t lba;
uint8_t tag;
+ uint8_t cmd;
int slot;
int used;
} NCQTransferState;