libqos/ahci: Swap memread/write with bufread/write

Where it makes sense, use the new faster primitives.
For generally small reads/writes such as for the PRDT
and FIS packets, stick with the more wasteful but
easier to debug memread/memwrite.

For ahci-test (before migration tests):
With this patch:
real    0m3.675s
user    0m2.582s
sys     0m1.718s

Without any qtest protocol improvements:
real    0m14.171s
user    0m12.072s
sys     0m12.527s

Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1430864578-22072-6-git-send-email-jsnow@redhat.com

Author: jnsnow

tests/ahci-test.c

@@ -874,15 +874,15 @@ static void ahci_test_io_rw_simple(AHCIQState *ahci, unsigned bufsize,
 
     /* Write some indicative pattern to our buffer. */
     generate_pattern(tx, bufsize, AHCI_SECTOR_SIZE);
-    memwrite(ptr, tx, bufsize);
+    bufwrite(ptr, tx, bufsize);
 
     /* Write this buffer to disk, then read it back to the DMA buffer. */
     ahci_guest_io(ahci, port, write_cmd, ptr, bufsize, sector);
     qmemset(ptr, 0x00, bufsize);
     ahci_guest_io(ahci, port, read_cmd, ptr, bufsize, sector);
 
     /*** Read back the Data ***/
-    memread(ptr, rx, bufsize);
+    bufread(ptr, rx, bufsize);
     g_assert_cmphex(memcmp(tx, rx, bufsize), ==, 0);
 
     ahci_free(ahci, ptr);
@@ -1018,7 +1018,7 @@ static void test_dma_fragmented(void)
     /* Create a DMA buffer in guest memory, and write our pattern to it. */
     ptr = guest_alloc(ahci->parent->alloc, bufsize);
     g_assert(ptr);
-    memwrite(ptr, tx, bufsize);
+    bufwrite(ptr, tx, bufsize);
 
     cmd = ahci_command_create(CMD_WRITE_DMA);
     ahci_command_adjust(cmd, 0, ptr, bufsize, 32);
@@ -1035,7 +1035,7 @@ static void test_dma_fragmented(void)
     g_free(cmd);
 
     /* Read back the guest's receive buffer into local memory */
-    memread(ptr, rx, bufsize);
+    bufread(ptr, rx, bufsize);
     guest_free(ahci->parent->alloc, ptr);
 
     g_assert_cmphex(memcmp(tx, rx, bufsize), ==, 0);

tests/libqos/ahci.c

@@ -653,13 +653,13 @@ void ahci_io(AHCIQState *ahci, uint8_t port, uint8_t ide_cmd,
     qmemset(ptr, 0x00, bufsize);
 
     if (props->write) {
-        memwrite(ptr, buffer, bufsize);
+        bufwrite(ptr, buffer, bufsize);
     }
 
     ahci_guest_io(ahci, port, ide_cmd, ptr, bufsize, sector);
 
     if (props->read) {
-        memread(ptr, buffer, bufsize);
+        bufread(ptr, buffer, bufsize);
     }
 
     ahci_free(ahci, ptr);