[PULL,03/22] dma: Let dma_memory_set() take MemTxAttrs argument

Commit Message

Philippe Mathieu-Daudé Dec. 31, 2021, 12:55 a.m. UTC

Let devices specify transaction attributes when calling
dma_memory_set().

Reviewed-by: Richard Henderson <[e-mail]>
Reviewed-by: Li Qiang <[e-mail]>
Reviewed-by: Edgar E. Iglesias <[e-mail]>
Signed-off-by: Philippe Mathieu-Daudé <[e-mail]>
Acked-by: Stefan Hajnoczi <[e-mail]>
Message-Id: <[e-mail]>
---
 include/hw/ppc/spapr_vio.h | 3 ++-
 include/sysemu/dma.h       | 3 ++-
 hw/nvram/fw_cfg.c          | 3 ++-
 softmmu/dma-helpers.c      | 5 ++---
 4 files changed, 8 insertions(+), 6 deletions(-)

Patch

diff --git a/include/hw/ppc/spapr_vio.h b/include/hw/ppc/spapr_vio.h
index 4c45f1579fa..c90e74a67dd 100644
--- a/include/hw/ppc/spapr_vio.h
+++ b/include/hw/ppc/spapr_vio.h
@@ -111,7 +111,8 @@  static inline int spapr_vio_dma_write(SpaprVioDevice *dev, uint64_t taddr,
 static inline int spapr_vio_dma_set(SpaprVioDevice *dev, uint64_t taddr,
                                     uint8_t c, uint32_t size)
 {
-    return (dma_memory_set(&dev->as, taddr, c, size) != 0) ?
+    return (dma_memory_set(&dev->as, taddr,
+                           c, size, MEMTXATTRS_UNSPECIFIED) != 0) ?
         H_DEST_PARM : H_SUCCESS;
 }
 
diff --git a/include/sysemu/dma.h b/include/sysemu/dma.h
index 296f3b57c9c..d23516f020a 100644
--- a/include/sysemu/dma.h
+++ b/include/sysemu/dma.h
@@ -175,9 +175,10 @@  static inline MemTxResult dma_memory_write(AddressSpace *as, dma_addr_t addr,
  * @addr: address within that address space
  * @c: constant byte to fill the memory
  * @len: the number of bytes to fill with the constant byte
+ * @attrs: memory transaction attributes
  */
 MemTxResult dma_memory_set(AddressSpace *as, dma_addr_t addr,
-                           uint8_t c, dma_addr_t len);
+                           uint8_t c, dma_addr_t len, MemTxAttrs attrs);
 
 /**
  * address_space_map: Map a physical memory region into a host virtual address.
diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c
index c06b30de112..f7803fe3c30 100644
--- a/hw/nvram/fw_cfg.c
+++ b/hw/nvram/fw_cfg.c
@@ -399,7 +399,8 @@  static void fw_cfg_dma_transfer(FWCfgState *s)
              * tested before.
              */
             if (read) {
-                if (dma_memory_set(s->dma_as, dma.address, 0, len)) {
+                if (dma_memory_set(s->dma_as, dma.address, 0, len,
+                                   MEMTXATTRS_UNSPECIFIED)) {
                     dma.control |= FW_CFG_DMA_CTL_ERROR;
                 }
             }
diff --git a/softmmu/dma-helpers.c b/softmmu/dma-helpers.c
index 7d766a5e89a..1f07217ad4a 100644
--- a/softmmu/dma-helpers.c
+++ b/softmmu/dma-helpers.c
@@ -19,7 +19,7 @@ 
 /* #define DEBUG_IOMMU */
 
 MemTxResult dma_memory_set(AddressSpace *as, dma_addr_t addr,
-                           uint8_t c, dma_addr_t len)
+                           uint8_t c, dma_addr_t len, MemTxAttrs attrs)
 {
     dma_barrier(as, DMA_DIRECTION_FROM_DEVICE);
 
@@ -31,8 +31,7 @@  MemTxResult dma_memory_set(AddressSpace *as, dma_addr_t addr,
     memset(fillbuf, c, FILLBUF_SIZE);
     while (len > 0) {
         l = len < FILLBUF_SIZE ? len : FILLBUF_SIZE;
-        error |= address_space_write(as, addr, MEMTXATTRS_UNSPECIFIED,
-                                     fillbuf, l);
+        error |= address_space_write(as, addr, attrs, fillbuf, l);
         len -= l;
         addr += l;
     }