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ahci/qtest: Execute IDENTIFY prior to data commands 

If you try to execute an NCQ command before trying to engage with the
device by issuing an IDENTIFY command, the error bits that are part of
the signature will fool the test suite into thinking there was a failure.

Issue IDENTIFY first on "boot", which will clear the signature out of
the registers for us.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1435016308-6150-9-git-send-email-jsnow@redhat.com
This commit is contained in:
John Snow 2015-07-04 02:06:03 -04:00
parent 0437d32ae2
commit 34475239b8
1 changed files with 6 additions and 0 deletions
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6
tests/ahci-test.c
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@ -228,6 +228,8 @@ static AHCIQState *ahci_boot_and_enable(const char *cli, ...)
{
AHCIQState *ahci;
va_list ap;
uint16_t buff[256];
uint8_t port;
if (cli) {
va_start(ap, cli);
@ -239,6 +241,10 @@ static AHCIQState *ahci_boot_and_enable(const char *cli, ...)
ahci_pci_enable(ahci);
ahci_hba_enable(ahci);
/* Initialize test device */
port = ahci_port_select(ahci);
ahci_port_clear(ahci, port);
ahci_io(ahci, port, CMD_IDENTIFY, &buff, sizeof(buff), 0);
return ahci;
}