[Qemu-devel] [PATCH 7/8] ide/ahci: Use universal DMA helper functions

[David Gibson <david@gibson.dropbear.id.au>]

The AHCI device can provide both PCI and SysBus AHCI device
emulations.  For this reason, it wasn't previously converted to use
the pci_dma_*() helper functions.  Now that we have universal DMA
helper functions, this converts AHCI to use them.

The DMAContext is obtained from pci_dma_context() in the PCI case and
set to NULL in the SysBus case (i.e. we assume for now that a SysBus
AHCI has no IOMMU translation).

Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 hw/ide/ahci.c |    7 ++++---
 hw/ide/ahci.h |    3 ++-
 hw/ide/ich.c  |    2 +-
 3 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c
index aa05a48..624da69 100644
--- a/hw/ide/ahci.c
+++ b/hw/ide/ahci.c
@@ -717,7 +717,7 @@ static int ahci_populate_sglist(AHCIDevice *ad, QEMUSGList *sglist)
         AHCI_SG *tbl = (AHCI_SG *)prdt;
 
         /* FIXME: pass the correct DMAContext */
-        qemu_sglist_init(sglist, sglist_alloc_hint, NULL);
+        qemu_sglist_init(sglist, sglist_alloc_hint, ad->hba->dma);
         for (i = 0; i < sglist_alloc_hint; i++) {
             /* flags_size is zero-based */
             qemu_sglist_add(sglist, le64_to_cpu(tbl[i].addr),
@@ -1171,11 +1171,12 @@ static const IDEDMAOps ahci_dma_ops = {
     .reset = ahci_dma_reset,
 };
 
-void ahci_init(AHCIState *s, DeviceState *qdev, int ports)
+void ahci_init(AHCIState *s, DeviceState *qdev, DMAContext *dma, int ports)
 {
     qemu_irq *irqs;
     int i;
 
+    s->dma = dma;
     s->ports = ports;
     s->dev = g_malloc0(sizeof(AHCIDevice) * ports);
     ahci_reg_init(s);
@@ -1238,7 +1239,7 @@ static const VMStateDescription vmstate_sysbus_ahci = {
 static int sysbus_ahci_init(SysBusDevice *dev)
 {
     SysbusAHCIState *s = FROM_SYSBUS(SysbusAHCIState, dev);
-    ahci_init(&s->ahci, &dev->qdev, s->num_ports);
+    ahci_init(&s->ahci, &dev->qdev, NULL, s->num_ports);
 
     sysbus_init_mmio(dev, &s->ahci.mem);
     sysbus_init_irq(dev, &s->ahci.irq);
diff --git a/hw/ide/ahci.h b/hw/ide/ahci.h
index b223d2c..af8c6ef 100644
--- a/hw/ide/ahci.h
+++ b/hw/ide/ahci.h
@@ -299,6 +299,7 @@ typedef struct AHCIState {
     uint32_t idp_index;     /* Current IDP index */
     int ports;
     qemu_irq irq;
+    DMAContext *dma;
 } AHCIState;
 
 typedef struct AHCIPCIState {
@@ -329,7 +330,7 @@ typedef struct NCQFrame {
     uint8_t reserved10;
 } QEMU_PACKED NCQFrame;
 
-void ahci_init(AHCIState *s, DeviceState *qdev, int ports);
+void ahci_init(AHCIState *s, DeviceState *qdev, DMAContext *dma, int ports);
 void ahci_uninit(AHCIState *s);
 
 void ahci_reset(void *opaque);
diff --git a/hw/ide/ich.c b/hw/ide/ich.c
index 560ae37..5354e13 100644
--- a/hw/ide/ich.c
+++ b/hw/ide/ich.c
@@ -91,7 +91,7 @@ static int pci_ich9_ahci_init(PCIDevice *dev)
     uint8_t *sata_cap;
     d = DO_UPCAST(struct AHCIPCIState, card, dev);
 
-    ahci_init(&d->ahci, &dev->qdev, 6);
+    ahci_init(&d->ahci, &dev->qdev, pci_dma_context(dev), 6);
 
     pci_config_set_prog_interface(d->card.config, AHCI_PROGMODE_MAJOR_REV_1);
 
-- 
1.7.9