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libqos/ahci: fix ahci_write_fis for ncq on ppc64

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Don't try to correct the endianness of NCQ commands, which do not
use any fields wider than a single byte.

This corrects the /x86_64/ahci/io/ncq/simple test (and others)
for ppc64 BE hosts.

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: John Snow <jsnow@redhat.com>
Tested-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1436210229-4118-2-git-send-email-jsnow@redhat.com
This commit is contained in:
John Snow 2015-07-06 15:17:09 -04:00
parent c8232b39bb
commit 9ab9993f71
2 changed files with 12 additions and 10 deletions
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20
tests/libqos/ahci.c
View file

@ -545,16 +545,18 @@ 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)
void ahci_write_fis(AHCIQState *ahci, AHCICommand *cmd)
{
RegH2DFIS tmp = *fis;
RegH2DFIS tmp = cmd->fis;
uint64_t addr = cmd->header.ctba;
/* 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);
/* NCQ commands use exclusively 8 bit fields and needs no adjustment.
* Only the count field needs to be adjusted for non-NCQ commands.
* 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. */
if (!cmd->props->ncq) {
tmp.count = cpu_to_le16(tmp.count);
}
memwrite(addr, &tmp, sizeof(tmp));
}
@ -877,7 +879,7 @@ void ahci_command_commit(AHCIQState *ahci, AHCICommand *cmd, uint8_t port)
/* Commit the command header and command FIS */
ahci_set_command_header(ahci, port, cmd->slot, &(cmd->header));
ahci_write_fis(ahci, &(cmd->fis), table_ptr);
ahci_write_fis(ahci, cmd);
/* Construct and write the PRDs to the command table */
g_assert_cmphex(prdtl, ==, cmd->header.prdtl);

2
tests/libqos/ahci.h
View file

@ -548,7 +548,7 @@ void ahci_get_command_header(AHCIQState *ahci, uint8_t port,
void ahci_set_command_header(AHCIQState *ahci, uint8_t port,
uint8_t slot, AHCICommandHeader *cmd);
void ahci_destroy_command(AHCIQState *ahci, uint8_t port, uint8_t slot);
void ahci_write_fis(AHCIQState *ahci, RegH2DFIS *fis, uint64_t addr);
void ahci_write_fis(AHCIQState *ahci, AHCICommand *cmd);
unsigned ahci_pick_cmd(AHCIQState *ahci, uint8_t port);
unsigned size_to_prdtl(unsigned bytes, unsigned bytes_per_prd);
void ahci_guest_io(AHCIQState *ahci, uint8_t port, uint8_t ide_cmd,