[Qemu-devel] [PATCH 12/14] usb-uhci: use the DMA memory access interface

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

This allows the device to work properly with an emulated IOMMU.

Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>
---
 hw/usb-uhci.c |   26 ++++++++++++++------------
 1 files changed, 14 insertions(+), 12 deletions(-)

diff --git a/hw/usb-uhci.c b/hw/usb-uhci.c
index c0de05b..bf43a0f 100644
--- a/hw/usb-uhci.c
+++ b/hw/usb-uhci.c
@@ -683,7 +683,7 @@ static int uhci_complete_td(UHCIState *s, UHCI_TD *td, UHCIAsync *async, uint32_
 
         if (len > 0) {
             /* write the data back */
-            cpu_physical_memory_write(td->buffer, async->buffer, len);
+            dma_memory_write(&s->dev.qdev, td->buffer, async->buffer, len);
         }
 
         if ((td->ctrl & TD_CTRL_SPD) && len < max_len) {
@@ -803,7 +803,7 @@ static int uhci_handle_td(UHCIState *s, uint32_t addr, UHCI_TD *td, uint32_t *in
     switch(pid) {
     case USB_TOKEN_OUT:
     case USB_TOKEN_SETUP:
-        cpu_physical_memory_read(td->buffer, async->buffer, max_len);
+        dma_memory_read(&s->dev.qdev, td->buffer, async->buffer, max_len);
         len = uhci_broadcast_packet(s, &async->packet);
         if (len >= 0)
             len = max_len;
@@ -846,7 +846,7 @@ static void uhci_async_complete(USBDevice *dev, USBPacket *packet)
         uint32_t link = async->td;
         uint32_t int_mask = 0, val;
 
-        cpu_physical_memory_read(link & ~0xf, (uint8_t *) &td, sizeof(td));
+        dma_memory_read(&s->dev.qdev, link & ~0xf, (uint8_t *) &td, sizeof(td));
         le32_to_cpus(&td.link);
         le32_to_cpus(&td.ctrl);
         le32_to_cpus(&td.token);
@@ -858,8 +858,8 @@ static void uhci_async_complete(USBDevice *dev, USBPacket *packet)
 
         /* update the status bits of the TD */
         val = cpu_to_le32(td.ctrl);
-        cpu_physical_memory_write((link & ~0xf) + 4,
-                                  (const uint8_t *)&val, sizeof(val));
+        dma_memory_write(&s->dev.qdev, (link & ~0xf) + 4,
+                         (const uint8_t *)&val, sizeof(val));
         uhci_async_free(s, async);
     } else {
         async->done = 1;
@@ -922,7 +922,7 @@ static void uhci_process_frame(UHCIState *s)
 
     DPRINTF("uhci: processing frame %d addr 0x%x\n" , s->frnum, frame_addr);
 
-    cpu_physical_memory_read(frame_addr, (uint8_t *)&link, 4);
+    dma_memory_read(&s->dev.qdev, frame_addr, (uint8_t *)&link, 4);
     le32_to_cpus(&link);
 
     int_mask = 0;
@@ -946,7 +946,8 @@ static void uhci_process_frame(UHCIState *s)
                 break;
             }
 
-            cpu_physical_memory_read(link & ~0xf, (uint8_t *) &qh, sizeof(qh));
+            dma_memory_read(&s->dev.qdev,
+                            link & ~0xf, (uint8_t *) &qh, sizeof(qh));
             le32_to_cpus(&qh.link);
             le32_to_cpus(&qh.el_link);
 
@@ -966,7 +967,8 @@ static void uhci_process_frame(UHCIState *s)
         }
 
         /* TD */
-        cpu_physical_memory_read(link & ~0xf, (uint8_t *) &td, sizeof(td));
+        dma_memory_read(&s->dev.qdev,
+                        link & ~0xf, (uint8_t *) &td, sizeof(td));
         le32_to_cpus(&td.link);
         le32_to_cpus(&td.ctrl);
         le32_to_cpus(&td.token);
@@ -980,8 +982,8 @@ static void uhci_process_frame(UHCIState *s)
         if (old_td_ctrl != td.ctrl) {
             /* update the status bits of the TD */
             val = cpu_to_le32(td.ctrl);
-            cpu_physical_memory_write((link & ~0xf) + 4,
-                                      (const uint8_t *)&val, sizeof(val));
+            dma_memory_write(&s->dev.qdev, (link & ~0xf) + 4,
+                             (const uint8_t *)&val, sizeof(val));
         }
 
         if (ret < 0) {
@@ -1009,8 +1011,8 @@ static void uhci_process_frame(UHCIState *s)
 	    /* update QH element link */
             qh.el_link = link;
             val = cpu_to_le32(qh.el_link);
-            cpu_physical_memory_write((curr_qh & ~0xf) + 4,
-                                          (const uint8_t *)&val, sizeof(val));
+            dma_memory_write(&s->dev.qdev, (curr_qh & ~0xf) + 4,
+                             (const uint8_t *)&val, sizeof(val));
 
             if (!depth_first(link)) {
                /* done with this QH */
-- 
1.7.4.4