dma: Let dma_memory_rw() take MemTxAttrs argument

Let devices specify transaction attributes when calling
dma_memory_rw().

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20211223115554.3155328-5-philmd@redhat.com>

hw/intc/spapr_xive.c

@@ -1684,7 +1684,8 @@ static target_ulong h_int_esb(PowerPCCPU *cpu,
         mmio_addr = xive->vc_base + xive_source_esb_mgmt(xsrc, lisn) + offset;
 
         if (dma_memory_rw(&address_space_memory, mmio_addr, &data, 8,
-                          (flags & SPAPR_XIVE_ESB_STORE))) {
+                          (flags & SPAPR_XIVE_ESB_STORE),
+                          MEMTXATTRS_UNSPECIFIED)) {
             qemu_log_mask(LOG_GUEST_ERROR, "XIVE: failed to access ESB @0x%"
                           HWADDR_PRIx "\n", mmio_addr);
             return H_HARDWARE;

hw/usb/hcd-ohci.c

@@ -586,7 +586,8 @@ static int ohci_copy_td(OHCIState *ohci, struct ohci_td *td,
     if (n > len)
         n = len;
 
-    if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, n, dir)) {
+    if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf,
+                      n, dir, MEMTXATTRS_UNSPECIFIED)) {
         return -1;
     }
     if (n == len) {
@@ -595,7 +596,7 @@ static int ohci_copy_td(OHCIState *ohci, struct ohci_td *td,
     ptr = td->be & ~0xfffu;
     buf += n;
     if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf,
-                      len - n, dir)) {
+                      len - n, dir, MEMTXATTRS_UNSPECIFIED)) {
         return -1;
     }
     return 0;
@@ -613,7 +614,8 @@ static int ohci_copy_iso_td(OHCIState *ohci,
     if (n > len)
         n = len;
 
-    if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf, n, dir)) {
+    if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf,
+                      n, dir, MEMTXATTRS_UNSPECIFIED)) {
         return -1;
     }
     if (n == len) {
@@ -622,7 +624,7 @@ static int ohci_copy_iso_td(OHCIState *ohci,
     ptr = end_addr & ~0xfffu;
     buf += n;
     if (dma_memory_rw(ohci->as, ptr + ohci->localmem_base, buf,
-                      len - n, dir)) {
+                      len - n, dir, MEMTXATTRS_UNSPECIFIED)) {
         return -1;
     }
     return 0;

include/hw/pci/pci.h

@@ -808,7 +808,8 @@ static inline MemTxResult pci_dma_rw(PCIDevice *dev, dma_addr_t addr,
                                      void *buf, dma_addr_t len,
                                      DMADirection dir)
 {
-    return dma_memory_rw(pci_get_address_space(dev), addr, buf, len, dir);
+    return dma_memory_rw(pci_get_address_space(dev), addr, buf, len,
+                         dir, MEMTXATTRS_UNSPECIFIED);
 }
 
 /**

include/sysemu/dma.h

@@ -121,15 +121,15 @@ static inline MemTxResult dma_memory_write_relaxed(AddressSpace *as,
  * @buf: buffer with the data transferred
  * @len: the number of bytes to read or write
  * @dir: indicates the transfer direction
+ * @attrs: memory transaction attributes
  */
 static inline MemTxResult dma_memory_rw(AddressSpace *as, dma_addr_t addr,
                                         void *buf, dma_addr_t len,
-                                        DMADirection dir)
+                                        DMADirection dir, MemTxAttrs attrs)
 {
     dma_barrier(as, dir);
 
-    return dma_memory_rw_relaxed(as, addr, buf, len, dir,
-                                 MEMTXATTRS_UNSPECIFIED);
+    return dma_memory_rw_relaxed(as, addr, buf, len, dir, attrs);
 }
 
 /**
@@ -147,7 +147,8 @@ static inline MemTxResult dma_memory_rw(AddressSpace *as, dma_addr_t addr,
 static inline MemTxResult dma_memory_read(AddressSpace *as, dma_addr_t addr,
                                           void *buf, dma_addr_t len)
 {
-    return dma_memory_rw(as, addr, buf, len, DMA_DIRECTION_TO_DEVICE);
+    return dma_memory_rw(as, addr, buf, len,
+                         DMA_DIRECTION_TO_DEVICE, MEMTXATTRS_UNSPECIFIED);
 }
 
 /**
@@ -166,7 +167,7 @@ static inline MemTxResult dma_memory_write(AddressSpace *as, dma_addr_t addr,
                                            const void *buf, dma_addr_t len)
 {
     return dma_memory_rw(as, addr, (void *)buf, len,
-                         DMA_DIRECTION_FROM_DEVICE);
+                         DMA_DIRECTION_FROM_DEVICE, MEMTXATTRS_UNSPECIFIED);
 }
 
 /**

softmmu/dma-helpers.c

@@ -305,7 +305,8 @@ static uint64_t dma_buf_rw(uint8_t *ptr, int32_t len, QEMUSGList *sg,
     while (len > 0) {
         ScatterGatherEntry entry = sg->sg[sg_cur_index++];
         int32_t xfer = MIN(len, entry.len);
-        dma_memory_rw(sg->as, entry.base, ptr, xfer, dir);
+        dma_memory_rw(sg->as, entry.base, ptr, xfer, dir,
+                      MEMTXATTRS_UNSPECIFIED);
         ptr += xfer;
         len -= xfer;
         resid -= xfer;