diff options
Diffstat (limited to 'src/gallium/winsys/nouveau/drm/nouveau_drm_api.c')
| -rw-r--r-- | src/gallium/winsys/nouveau/drm/nouveau_drm_api.c | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/gallium/winsys/nouveau/drm/nouveau_drm_api.c b/src/gallium/winsys/nouveau/drm/nouveau_drm_api.c new file mode 100644 index 0000000000..716d4bacd3 --- /dev/null +++ b/src/gallium/winsys/nouveau/drm/nouveau_drm_api.c @@ -0,0 +1,157 @@ +#include "pipe/p_context.h" +#include "pipe/p_state.h" +#include "util/u_format.h" +#include "util/u_memory.h" +#include "util/u_inlines.h" + +#include "nouveau_drm_api.h" + +#include "nouveau_drmif.h" +#include "nouveau_channel.h" +#include "nouveau_bo.h" + +#include "nouveau/nouveau_winsys.h" +#include "nouveau/nouveau_screen.h" + +static struct pipe_surface * +dri_surface_from_handle(struct drm_api *api, struct pipe_screen *pscreen, + unsigned handle, enum pipe_format format, + unsigned width, unsigned height, unsigned pitch) +{ + struct pipe_surface *ps = NULL; + struct pipe_texture *pt = NULL; + struct pipe_texture tmpl; + struct winsys_handle whandle; + + memset(&tmpl, 0, sizeof(tmpl)); + tmpl.tex_usage = PIPE_TEXTURE_USAGE_SCANOUT; + tmpl.target = PIPE_TEXTURE_2D; + tmpl.last_level = 0; + tmpl.depth0 = 1; + tmpl.format = format; + tmpl.width0 = width; + tmpl.height0 = height; + + memset(&whandle, 0, sizeof(whandle)); + whandle.stride = pitch; + whandle.handle = handle; + + pt = pscreen->texture_from_handle(pscreen, &tmpl, &whandle); + if (!pt) + return NULL; + + ps = pscreen->get_tex_surface(pscreen, pt, 0, 0, 0, + PIPE_BUFFER_USAGE_GPU_READ | + PIPE_BUFFER_USAGE_GPU_WRITE); + + /* we don't need the texture from this point on */ + pipe_texture_reference(&pt, NULL); + return ps; +} + +static struct pipe_surface * +nouveau_dri1_front_surface(struct pipe_context *pipe) +{ + return nouveau_winsys_screen(pipe->screen)->front; +} + +static struct dri1_api nouveau_dri1_api = { + nouveau_dri1_front_surface, +}; + +static void +nouveau_drm_destroy_winsys(struct pipe_winsys *s) +{ + struct nouveau_winsys *nv_winsys = nouveau_winsys(s); + struct nouveau_screen *nv_screen= nouveau_screen(nv_winsys->pscreen); + nouveau_device_close(&nv_screen->device); + FREE(nv_winsys); +} + +static struct pipe_screen * +nouveau_drm_create_screen(struct drm_api *api, int fd, + struct drm_create_screen_arg *arg) +{ + struct dri1_create_screen_arg *dri1 = (void *)arg; + struct nouveau_winsys *nvws; + struct pipe_winsys *ws; + struct nouveau_device *dev = NULL; + struct pipe_screen *(*init)(struct pipe_winsys *, + struct nouveau_device *); + int ret; + + ret = nouveau_device_open_existing(&dev, 0, fd, 0); + if (ret) + return NULL; + + switch (dev->chipset & 0xf0) { + case 0x30: + case 0x40: + case 0x60: + init = nvfx_screen_create; + break; + case 0x50: + case 0x80: + case 0x90: + case 0xa0: + init = nv50_screen_create; + break; + default: + debug_printf("%s: unknown chipset nv%02x\n", __func__, + dev->chipset); + return NULL; + } + + nvws = CALLOC_STRUCT(nouveau_winsys); + if (!nvws) { + nouveau_device_close(&dev); + return NULL; + } + ws = &nvws->base; + ws->destroy = nouveau_drm_destroy_winsys; + + nvws->pscreen = init(ws, dev); + if (!nvws->pscreen) { + ws->destroy(ws); + return NULL; + } + + if (arg && arg->mode == DRM_CREATE_DRI1) { + struct nouveau_dri *nvdri = dri1->ddx_info; + enum pipe_format format; + + if (nvdri->bpp == 16) + format = PIPE_FORMAT_B5G6R5_UNORM; + else + format = PIPE_FORMAT_B8G8R8A8_UNORM; + + nvws->front = dri_surface_from_handle(api, nvws->pscreen, + nvdri->front_offset, + format, nvdri->width, + nvdri->height, + nvdri->front_pitch * + (nvdri->bpp / 8)); + if (!nvws->front) { + debug_printf("%s: error referencing front buffer\n", + __func__); + ws->destroy(ws); + return NULL; + } + + dri1->api = &nouveau_dri1_api; + } + + return nvws->pscreen; +} + +struct drm_api drm_api_hooks = { + .name = "nouveau", + .driver_name = "nouveau", + .create_screen = nouveau_drm_create_screen, +}; + +struct drm_api * +drm_api_create() { + return &drm_api_hooks; +} + |