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libqos/ahci: Add ahci_port_check_error helper

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ahci_port_check_error checks a given port's error registers and asserts
that everything from the port-level view is still OK.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1423158090-25580-6-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
John Snow 2015-02-05 12:41:16 -05:00 • committed by Stefan Hajnoczi
parent 6cae27a6af
commit 85c34e9395
3 changed files with 24 additions and 7 deletions
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22
tests/libqos/ahci.c
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@ -311,6 +311,28 @@ void ahci_port_clear(AHCIQState *ahci, uint8_t port)
qmemset(ahci->port[port].fb, 0x00, 0x100);
}
/**
* Check a port for errors.
*/
void ahci_port_check_error(AHCIQState *ahci, uint8_t port)
{
uint32_t reg;
/* The upper 9 bits of the IS register all indicate errors. */
reg = ahci_px_rreg(ahci, port, AHCI_PX_IS);
reg >>= 23;
g_assert_cmphex(reg, ==, 0);
/* The Sata Error Register should be empty. */
reg = ahci_px_rreg(ahci, port, AHCI_PX_SERR);
g_assert_cmphex(reg, ==, 0);
/* The TFD also has two error sections. */
reg = ahci_px_rreg(ahci, port, AHCI_PX_TFD);
ASSERT_BIT_CLEAR(reg, AHCI_PX_TFD_STS_ERR);
ASSERT_BIT_CLEAR(reg, AHCI_PX_TFD_ERR);
}
/* Get the command in #slot of port #port. */
void ahci_get_command_header(AHCIQState *ahci, uint8_t port,
uint8_t slot, AHCICommandHeader *cmd)