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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>
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@ -378,17 +378,23 @@ static uint64_t ahci_mem_read(void *opaque, hwaddr addr, unsigned size)
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int ofst = addr - aligned;
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uint64_t lo = ahci_mem_read_32(opaque, aligned);
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uint64_t hi;
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uint64_t val;
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/* if < 8 byte read does not cross 4 byte boundary */
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if (ofst + size <= 4) {
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return lo >> (ofst * 8);
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}
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g_assert_cmpint(size, >, 1);
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val = lo >> (ofst * 8);
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} else {
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g_assert_cmpint(size, >, 1);
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/* If the 64bit read is unaligned, we will produce undefined
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* results. AHCI does not support unaligned 64bit reads. */
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hi = ahci_mem_read_32(opaque, aligned + 4);
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return (hi << 32 | lo) >> (ofst * 8);
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/* If the 64bit read is unaligned, we will produce undefined
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* results. AHCI does not support unaligned 64bit reads. */
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hi = ahci_mem_read_32(opaque, aligned + 4);
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val = (hi << 32 | lo) >> (ofst * 8);
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}
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DPRINTF(-1, "addr=0x%" HWADDR_PRIx " val=0x%" PRIx64 ", size=%d\n",
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addr, val, size);
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return val;
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}
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@ -397,6 +403,9 @@ static void ahci_mem_write(void *opaque, hwaddr addr,
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{
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AHCIState *s = opaque;
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DPRINTF(-1, "addr=0x%" HWADDR_PRIx " val=0x%" PRIx64 ", size=%d\n",
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addr, val, size);
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/* Only aligned reads are allowed on AHCI */
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if (addr & 3) {
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fprintf(stderr, "ahci: Mis-aligned write to addr 0x"
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