hw/dma: Use dma_addr_t type definition when relevant

Update the obvious places where dma_addr_t should be used
(instead of uint64_t, hwaddr, size_t, int32_t types).

This allows to have &dma_addr_t type portable on 32/64-bit
hosts.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220111184309.28637-11-f4bug@amsat.org>

hw/nvme/ctrl.c

@@ -1147,7 +1147,7 @@ static uint16_t nvme_tx(NvmeCtrl *n, NvmeSg *sg, uint8_t *ptr, uint32_t len,
 
     if (sg->flags & NVME_SG_DMA) {
         const MemTxAttrs attrs = MEMTXATTRS_UNSPECIFIED;
-        uint64_t residual;
+        dma_addr_t residual;
 
         if (dir == NVME_TX_DIRECTION_TO_DEVICE) {
             residual = dma_buf_write(ptr, len, &sg->qsg, attrs);

hw/rdma/rdma_utils.c

@@ -20,7 +20,7 @@
 void *rdma_pci_dma_map(PCIDevice *dev, dma_addr_t addr, dma_addr_t len)
 {
     void *p;
-    hwaddr pci_len = len;
+    dma_addr_t pci_len = len;
 
     if (!addr) {
         rdma_error_report("addr is NULL");

hw/scsi/megasas.c

@@ -1046,7 +1046,7 @@ static int megasas_pd_get_info_submit(SCSIDevice *sdev, int lun,
     uint16_t pd_id = ((sdev->id & 0xFF) << 8) | (lun & 0xFF);
     uint8_t cmdbuf[6];
     size_t len;
-    size_t residual;
+    dma_addr_t residual;
 
     if (!cmd->iov_buf) {
         cmd->iov_buf = g_malloc0(dcmd_size);
@@ -1152,7 +1152,7 @@ static int megasas_dcmd_ld_get_list(MegasasState *s, MegasasCmd *cmd)
 {
     struct mfi_ld_list info;
     size_t dcmd_size = sizeof(info);
-    size_t residual;
+    dma_addr_t residual;
     uint32_t num_ld_disks = 0, max_ld_disks;
     uint64_t ld_size;
     BusChild *kid;
@@ -1198,7 +1198,7 @@ static int megasas_dcmd_ld_list_query(MegasasState *s, MegasasCmd *cmd)
     uint16_t flags;
     struct mfi_ld_targetid_list info;
     size_t dcmd_size = sizeof(info);
-    size_t residual;
+    dma_addr_t residual;
     uint32_t num_ld_disks = 0, max_ld_disks = s->fw_luns;
     BusChild *kid;
 
@@ -1251,7 +1251,7 @@ static int megasas_ld_get_info_submit(SCSIDevice *sdev, int lun,
     size_t dcmd_size = sizeof(struct mfi_ld_info);
     uint8_t cdb[6];
     ssize_t len;
-    size_t residual;
+    dma_addr_t residual;
     uint16_t sdev_id = ((sdev->id & 0xFF) << 8) | (lun & 0xFF);
     uint64_t ld_size;
 
@@ -1625,7 +1625,7 @@ static int megasas_handle_dcmd(MegasasState *s, MegasasCmd *cmd)
 }
 
 static int megasas_finish_internal_dcmd(MegasasCmd *cmd,
-                                        SCSIRequest *req, size_t residual)
+                                        SCSIRequest *req, dma_addr_t residual)
 {
     int retval = MFI_STAT_OK;
     int lun = req->lun;

include/sysemu/dma.h

@@ -38,7 +38,7 @@ struct QEMUSGList {
     ScatterGatherEntry *sg;
     int nsg;
     int nalloc;
-    size_t size;
+    dma_addr_t size;
     DeviceState *dev;
     AddressSpace *as;
 };
@@ -301,8 +301,10 @@ BlockAIOCB *dma_blk_read(BlockBackend *blk,
 BlockAIOCB *dma_blk_write(BlockBackend *blk,
                           QEMUSGList *sg, uint64_t offset, uint32_t align,
                           BlockCompletionFunc *cb, void *opaque);
-uint64_t dma_buf_read(void *ptr, int32_t len, QEMUSGList *sg, MemTxAttrs attrs);
+dma_addr_t dma_buf_read(void *ptr, dma_addr_t len,
-uint64_t dma_buf_write(void *ptr, int32_t len, QEMUSGList *sg, MemTxAttrs attrs);
+                         QEMUSGList *sg, MemTxAttrs attrs);
+dma_addr_t dma_buf_write(void *ptr, dma_addr_t len,
+                          QEMUSGList *sg, MemTxAttrs attrs);
 
 void dma_acct_start(BlockBackend *blk, BlockAcctCookie *cookie,
                     QEMUSGList *sg, enum BlockAcctType type);

softmmu/dma-helpers.c

@@ -294,12 +294,12 @@ BlockAIOCB *dma_blk_write(BlockBackend *blk,
 }
 
 
-static MemTxResult dma_buf_rw(void *buf, int32_t len, uint64_t *residual,
+static MemTxResult dma_buf_rw(void *buf, dma_addr_t len, dma_addr_t *residual,
                               QEMUSGList *sg, DMADirection dir,
                               MemTxAttrs attrs)
 {
     uint8_t *ptr = buf;
-    uint64_t xresidual;
+    dma_addr_t xresidual;
     int sg_cur_index;
     MemTxResult res = MEMTX_OK;
 
@@ -308,7 +308,7 @@ static MemTxResult dma_buf_rw(void *buf, int32_t len, uint64_t *residual,
     len = MIN(len, xresidual);
     while (len > 0) {
         ScatterGatherEntry entry = sg->sg[sg_cur_index++];
-        int32_t xfer = MIN(len, entry.len);
+        dma_addr_t xfer = MIN(len, entry.len);
         res |= dma_memory_rw(sg->as, entry.base, ptr, xfer, dir, attrs);
         ptr += xfer;
         len -= xfer;
@@ -321,18 +321,20 @@ static MemTxResult dma_buf_rw(void *buf, int32_t len, uint64_t *residual,
     return res;
 }
 
-uint64_t dma_buf_read(void *ptr, int32_t len, QEMUSGList *sg, MemTxAttrs attrs)
+dma_addr_t dma_buf_read(void *ptr, dma_addr_t len,
+                         QEMUSGList *sg, MemTxAttrs attrs)
 {
-    uint64_t residual;
+    dma_addr_t residual;
 
     dma_buf_rw(ptr, len, &residual, sg, DMA_DIRECTION_FROM_DEVICE, attrs);
 
     return residual;
 }
 
-uint64_t dma_buf_write(void *ptr, int32_t len, QEMUSGList *sg, MemTxAttrs attrs)
+dma_addr_t dma_buf_write(void *ptr, dma_addr_t len,
+                          QEMUSGList *sg, MemTxAttrs attrs)
 {
-    uint64_t residual;
+    dma_addr_t residual;
 
     dma_buf_rw(ptr, len, &residual, sg, DMA_DIRECTION_TO_DEVICE, attrs);