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libqos/ahci: add ahci command helpers 

ahci_command_set_flags:  Set additional flags in the command header.
ahci_command_clr_flags:  Clear flags from the command header.
ahci_command_set_offset: Change the IO sector from 0.
ahci_command_adjust:     Adjust many values simultaneously.

To be used to adjust the command header if the default values/guesses
were incorrect or undesirable.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1424905602-24715-4-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

[ kwolf: Fixed conflicting prototype for ahci_command_adjust() ]

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
master
John Snow 2015-02-25 18:06:37 -05:00 committed by Kevin Wolf
parent d63b4017c2
commit f9f963e0fb
2 changed files with 47 additions and 0 deletions
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42
tests/libqos/ahci.c
View File

@ -713,6 +713,40 @@ void ahci_command_free(AHCICommand *cmd)
g_free(cmd);
}
void ahci_command_set_flags(AHCICommand *cmd, uint16_t cmdh_flags)
{
cmd->header.flags |= cmdh_flags;
}
void ahci_command_clr_flags(AHCICommand *cmd, uint16_t cmdh_flags)
{
cmd->header.flags &= ~cmdh_flags;
}
void ahci_command_set_offset(AHCICommand *cmd, uint64_t lba_sect)
{
RegH2DFIS *fis = &(cmd->fis);
if (cmd->props->lba28) {
g_assert_cmphex(lba_sect, <=, 0xFFFFFFF);
} else if (cmd->props->lba48) {
g_assert_cmphex(lba_sect, <=, 0xFFFFFFFFFFFF);
} else {
/* Can't set offset if we don't know the format. */
g_assert_not_reached();
}
/* LBA28 uses the low nibble of the device/control register for LBA24:27 */
fis->lba_lo[0] = (lba_sect & 0xFF);
fis->lba_lo[1] = (lba_sect >> 8) & 0xFF;
fis->lba_lo[2] = (lba_sect >> 16) & 0xFF;
if (cmd->props->lba28) {
fis->device = (fis->device & 0xF0) || (lba_sect >> 24) & 0x0F;
}
fis->lba_hi[0] = (lba_sect >> 24) & 0xFF;
fis->lba_hi[1] = (lba_sect >> 32) & 0xFF;
fis->lba_hi[2] = (lba_sect >> 40) & 0xFF;
}
void ahci_command_set_buffer(AHCICommand *cmd, uint64_t buffer)
{
cmd->buffer = buffer;
@ -740,6 +774,14 @@ void ahci_command_set_prd_size(AHCICommand *cmd, unsigned prd_size)
ahci_command_set_sizes(cmd, cmd->xbytes, prd_size);
}
void ahci_command_adjust(AHCICommand *cmd, uint64_t offset, uint64_t buffer,
uint64_t xbytes, unsigned prd_size)
{
ahci_command_set_sizes(cmd, xbytes, prd_size);
ahci_command_set_buffer(cmd, buffer);
ahci_command_set_offset(cmd, offset);
}
void ahci_command_commit(AHCIQState *ahci, AHCICommand *cmd, uint8_t port)
{
uint16_t i, prdtl;

5
tests/libqos/ahci.h
View File

@ -537,11 +537,16 @@ void ahci_command_verify(AHCIQState *ahci, AHCICommand *cmd);
void ahci_command_free(AHCICommand *cmd);
/* Command adjustments */
void ahci_command_set_flags(AHCICommand *cmd, uint16_t cmdh_flags);
void ahci_command_clr_flags(AHCICommand *cmd, uint16_t cmdh_flags);
void ahci_command_set_offset(AHCICommand *cmd, uint64_t lba_sect);
void ahci_command_set_buffer(AHCICommand *cmd, uint64_t buffer);
void ahci_command_set_size(AHCICommand *cmd, uint64_t xbytes);
void ahci_command_set_prd_size(AHCICommand *cmd, unsigned prd_size);
void ahci_command_set_sizes(AHCICommand *cmd, uint64_t xbytes,
unsigned prd_size);
void ahci_command_adjust(AHCICommand *cmd, uint64_t lba_sect, uint64_t gbuffer,
uint64_t xbytes, unsigned prd_size);
/* Command Misc */
uint8_t ahci_command_slot(AHCICommand *cmd);