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qtest/ahci: add ahci_write_fis

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Similar to ahci_set_command_header, add a helper that takes an
in-memory representation of a command FIS and writes it to guest
memory, handling endianness as-needed.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1423158090-25580-11-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
John Snow 2015-02-05 12:41:21 -05:00 • committed by Stefan Hajnoczi
parent 36e367261c
commit 52515766f1
3 changed files with 17 additions and 2 deletions
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14
tests/libqos/ahci.c
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@ -464,6 +464,20 @@ void ahci_destroy_command(AHCIQState *ahci, uint8_t port, uint8_t slot)
ahci->port[port].prdtl[slot] = 0;
}
void ahci_write_fis(AHCIQState *ahci, RegH2DFIS *fis, uint64_t addr)
{
RegH2DFIS tmp = *fis;
/* The auxiliary FIS fields are defined per-command and are not
* currently implemented in libqos/ahci.o, but may or may not need
* to be flipped. */
/* All other FIS fields are 8 bit and do not need to be flipped. */
tmp.count = cpu_to_le16(tmp.count);
memwrite(addr, &tmp, sizeof(tmp));
}
unsigned ahci_pick_cmd(AHCIQState *ahci, uint8_t port)
{
unsigned i;