diff options
| author | Peter Crosthwaite <crosthwaitepeter@gmail.com> | 2015-11-06 14:09:00 -0500 |
|---|---|---|
| committer | John Snow <jsnow@redhat.com> | 2015-11-06 14:09:00 -0500 |
| commit | 802742670df73773c0dbaa251c63e4561cc794a1 (patch) | |
| tree | 47260ae2875eae62d0f9aaec70c66b728dd3002d /hw/ide | |
| parent | 9fbf0fa81fca8f527669dd4fa72662d66e7d6329 (diff) | |
ahci: Add some MMIO debug printfs
These are useful for bringup of AHCI.
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 517ba413dce7deb4ab17c0cc1e8bbdaaace2a0db.1445917756.git.crosthwaite.peter@gmail.com
Signed-off-by: John Snow <jsnow@redhat.com>
Diffstat (limited to 'hw/ide')
| -rw-r--r-- | hw/ide/ahci.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c index f547ebb46c..721918991c 100644 --- a/hw/ide/ahci.c +++ b/hw/ide/ahci.c @@ -378,17 +378,23 @@ static uint64_t ahci_mem_read(void *opaque, hwaddr addr, unsigned size) int ofst = addr - aligned; uint64_t lo = ahci_mem_read_32(opaque, aligned); uint64_t hi; + uint64_t val; /* if < 8 byte read does not cross 4 byte boundary */ if (ofst + size <= 4) { - return lo >> (ofst * 8); + val = lo >> (ofst * 8); + } else { + g_assert_cmpint(size, >, 1); + + /* If the 64bit read is unaligned, we will produce undefined + * results. AHCI does not support unaligned 64bit reads. */ + hi = ahci_mem_read_32(opaque, aligned + 4); + val = (hi << 32 | lo) >> (ofst * 8); } - g_assert_cmpint(size, >, 1); - /* If the 64bit read is unaligned, we will produce undefined - * results. AHCI does not support unaligned 64bit reads. */ - hi = ahci_mem_read_32(opaque, aligned + 4); - return (hi << 32 | lo) >> (ofst * 8); + DPRINTF(-1, "addr=0x%" HWADDR_PRIx " val=0x%" PRIx64 ", size=%d\n", + addr, val, size); + return val; } @@ -397,6 +403,9 @@ static void ahci_mem_write(void *opaque, hwaddr addr, { AHCIState *s = opaque; + DPRINTF(-1, "addr=0x%" HWADDR_PRIx " val=0x%" PRIx64 ", size=%d\n", + addr, val, size); + /* Only aligned reads are allowed on AHCI */ if (addr & 3) { fprintf(stderr, "ahci: Mis-aligned write to addr 0x" |