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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>
This commit is contained in:
Peter Crosthwaite 2015-11-06 14:09:00 -05:00 committed by John Snow
parent 9fbf0fa81f
commit 802742670d
1 changed files with 16 additions and 7 deletions
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23
hw/ide/ahci.c
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@ -378,17 +378,23 @@ static uint64_t ahci_mem_read(void *opaque, hwaddr addr, unsigned size)
int ofst = addr - aligned; int ofst = addr - aligned;
uint64_t lo = ahci_mem_read_32(opaque, aligned); uint64_t lo = ahci_mem_read_32(opaque, aligned);
uint64_t hi; uint64_t hi;
uint64_t val;
/* if < 8 byte read does not cross 4 byte boundary */ /* if < 8 byte read does not cross 4 byte boundary */
if (ofst + size <= 4) { if (ofst + size <= 4) {
return lo >> (ofst * 8); val = lo >> (ofst * 8);
} } else {
g_assert_cmpint(size, >, 1); g_assert_cmpint(size, >, 1);
/* If the 64bit read is unaligned, we will produce undefined /* If the 64bit read is unaligned, we will produce undefined
* results. AHCI does not support unaligned 64bit reads. */ * results. AHCI does not support unaligned 64bit reads. */
hi = ahci_mem_read_32(opaque, aligned + 4); hi = ahci_mem_read_32(opaque, aligned + 4);
return (hi << 32 | lo) >> (ofst * 8); val = (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; 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 */ /* Only aligned reads are allowed on AHCI */
if (addr & 3) { if (addr & 3) {
fprintf(stderr, "ahci: Mis-aligned write to addr 0x" fprintf(stderr, "ahci: Mis-aligned write to addr 0x"