r600g: add support for virtual address space on cayman v11

Virtual address space put the userspace in charge of their GPU
address space. It's up to userspace to bind bo into the virtual
address space. Command stream can them be executed using the
IB_VM chunck.

This patch add support for this configuration. It doesn't remove
the 64K ib size limit thought this limit can be extanded up to
1M for IB_VM chunk.

v2: fix rendering
v3: fix rendering when using index buffer
v4: make vm conditional on kernel support add basic va management
v5: catch the case when we already have va for a bo
v6: agd5f: update on top of ioctl changes
v7: agd5f: further ioctl updates
v8: indentation cleanup + fix non cayman
v9: rebase against lastest mesa + improvement from Marek & Michel
v10: fix cut/paste bug
v11: don't rely on updated radeon_drm.h

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/gallium/drivers/r600/r600_resource.c b/src/gallium/drivers/r600/r600_resource.c
index f3ab3613c84..01db97ad42c 100644
--- a/src/gallium/drivers/r600/r600_resource.c
+++ b/src/gallium/drivers/r600/r600_resource.c
@@ -62,3 +62,14 @@ void r600_init_context_resource_functions(struct r600_pipe_context *r600)
 	r600->context.transfer_destroy = u_transfer_destroy_vtbl;
 	r600->context.transfer_inline_write = u_transfer_inline_write_vtbl;
 }
+
+uint64_t r600_resource_va(struct pipe_screen *screen, struct pipe_resource *resource)
+{
+	struct r600_screen *rscreen = (struct r600_screen*)screen;
+	struct r600_resource *rresource = (struct r600_resource*)resource;
+
+	if (rresource->buf) {
+		return rscreen->ws->buffer_get_virtual_address(rresource->buf);
+	}
+	return 0;
+}