gallium: Add dmabuf arg to memory fd allocation API

Modify the memory fd allocation API to provide an argument to specify
if the allocating fd should be a dmabuf.

Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27805>

src/gallium/auxiliary/driver_trace/tr_screen.c

@@ -635,7 +635,8 @@ trace_screen_allocate_memory(struct pipe_screen *_screen,
 static struct pipe_memory_allocation *
 trace_screen_allocate_memory_fd(struct pipe_screen *_screen,
                                 uint64_t size,
-                                int *fd)
+                                int *fd,
+                                bool dmabuf)
 {
    struct trace_screen *tr_scr = trace_screen(_screen);
    struct pipe_screen *screen = tr_scr->screen;
@@ -646,8 +647,9 @@ trace_screen_allocate_memory_fd(struct pipe_screen *_screen,
    trace_dump_arg(ptr, screen);
    trace_dump_arg(uint, size);
    trace_dump_arg(ptr, fd);
+   trace_dump_arg(bool, dmabuf);
 
-   result = screen->allocate_memory_fd(screen, size, fd);
+   result = screen->allocate_memory_fd(screen, size, fd, dmabuf);
 
    trace_dump_ret(ptr, result);
 

src/gallium/drivers/llvmpipe/lp_texture.c

@@ -360,7 +360,7 @@ llvmpipe_memobj_create_from_handle(struct pipe_screen *pscreen,
    struct llvmpipe_memory_object *memobj = CALLOC_STRUCT(llvmpipe_memory_object);
 
    if (handle->type == WINSYS_HANDLE_TYPE_FD &&
-       pscreen->import_memory_fd(pscreen, handle->handle, &memobj->data, &memobj->size)) {
+       pscreen->import_memory_fd(pscreen, handle->handle, &memobj->data, &memobj->size, false)) {
       return &memobj->b;
    }
    free(memobj);
@@ -991,7 +991,8 @@ static const char *driver_id = "llvmpipe" MESA_GIT_SHA1;
 static struct pipe_memory_allocation *
 llvmpipe_allocate_memory_fd(struct pipe_screen *screen,
                             uint64_t size,
-                            int *fd)
+                            int *fd,
+                            bool dmabuf)
 {
    uint64_t alignment;
    if (!os_get_page_size(&alignment))
@@ -1005,7 +1006,8 @@ static bool
 llvmpipe_import_memory_fd(struct pipe_screen *screen,
                           int fd,
                           struct pipe_memory_allocation **ptr,
-                          uint64_t *size)
+                          uint64_t *size,
+                          bool dmabuf)
 {
    return os_import_memory_fd(fd, (void**)ptr, size, driver_id);
 }

src/gallium/frontends/lavapipe/lvp_device.c

@@ -1776,7 +1776,7 @@ VKAPI_ATTR VkResult VKAPI_CALL lvp_AllocateMemory(
 #ifdef PIPE_MEMORY_FD
    else if(import_info) {
       uint64_t size;
-      if(!device->pscreen->import_memory_fd(device->pscreen, import_info->fd, &mem->pmem, &size)) {
+      if(!device->pscreen->import_memory_fd(device->pscreen, import_info->fd, &mem->pmem, &size, false)) {
          close(import_info->fd);
          error = VK_ERROR_INVALID_EXTERNAL_HANDLE;
          goto fail;
@@ -1795,7 +1795,7 @@ VKAPI_ATTR VkResult VKAPI_CALL lvp_AllocateMemory(
       mem->memory_type = LVP_DEVICE_MEMORY_TYPE_OPAQUE_FD;
    }
    else if (export_info && export_info->handleTypes) {
-      mem->pmem = device->pscreen->allocate_memory_fd(device->pscreen, pAllocateInfo->allocationSize, &mem->backed_fd);
+      mem->pmem = device->pscreen->allocate_memory_fd(device->pscreen, pAllocateInfo->allocationSize, &mem->backed_fd, false);
       if (!mem->pmem || mem->backed_fd < 0) {
          goto fail;
       }

src/gallium/include/pipe/p_screen.h

@@ -667,7 +667,8 @@ struct pipe_screen {
     */
    struct pipe_memory_allocation *(*allocate_memory_fd)(struct pipe_screen *screen,
                                                         uint64_t size,
-                                                        int *fd);
+                                                        int *fd,
+                                                        bool dmabuf);
 
    /**
     * Import memory from an fd-handle.
@@ -675,7 +676,8 @@ struct pipe_screen {
    bool (*import_memory_fd)(struct pipe_screen *screen,
                             int fd,
                             struct pipe_memory_allocation **pmem,
-                            uint64_t *size);
+                            uint64_t *size,
+                            bool dmabuf);
 
    /**
     * Free previously allocated fd-based memory.