diff options
Diffstat (limited to 'src/gallium/winsys/drm/nouveau/drm/nouveau_drm_api.c')
| -rw-r--r-- | src/gallium/winsys/drm/nouveau/drm/nouveau_drm_api.c | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/src/gallium/winsys/drm/nouveau/drm/nouveau_drm_api.c b/src/gallium/winsys/drm/nouveau/drm/nouveau_drm_api.c new file mode 100644 index 00000000000..c0127e803f1 --- /dev/null +++ b/src/gallium/winsys/drm/nouveau/drm/nouveau_drm_api.c @@ -0,0 +1,194 @@ +#include "util/u_memory.h" + +#include "nouveau_drm_api.h" +#include "nouveau_winsys_pipe.h" + +#include "nouveau_drmif.h" +#include "nouveau_channel.h" +#include "nouveau_bo.h" + +static struct pipe_screen * +nouveau_drm_create_screen(int fd, int pciid) +{ + struct pipe_winsys *ws; + struct nouveau_winsys *nvws; + struct nouveau_device *dev = NULL; + struct pipe_screen *(*init)(struct pipe_winsys *, + struct nouveau_winsys *); + int ret; + + ret = nouveau_device_open_existing(&dev, 0, fd, 0); + if (ret) + return NULL; + + switch (dev->chipset & 0xf0) { + case 0x00: + init = nv04_screen_create; + break; + case 0x10: + init = nv10_screen_create; + break; + case 0x20: + init = nv20_screen_create; + break; + case 0x30: + init = nv30_screen_create; + break; + case 0x40: + case 0x60: + init = nv40_screen_create; + break; + 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; + } + + ws = nouveau_pipe_winsys_new(dev); + if (!ws) { + nouveau_device_close(&dev); + return NULL; + } + + nvws = nouveau_winsys_new(ws); + if (!nvws) { + ws->destroy(ws); + return NULL; + } + + nouveau_pipe_winsys(ws)->pscreen = init(ws, nvws); + if (!nouveau_pipe_winsys(ws)->pscreen) { + ws->destroy(ws); + return NULL; + } + + return nouveau_pipe_winsys(ws)->pscreen; +} + +static struct pipe_context * +nouveau_drm_create_context(struct pipe_screen *pscreen) +{ + struct nouveau_pipe_winsys *nvpws = nouveau_screen(pscreen); + struct pipe_context *(*init)(struct pipe_screen *, unsigned); + unsigned chipset = nvpws->channel->device->chipset; + int i; + + switch (chipset & 0xf0) { + case 0x00: + init = nv04_create; + break; + case 0x10: + init = nv10_create; + break; + case 0x20: + init = nv20_create; + break; + case 0x30: + init = nv30_create; + break; + case 0x40: + case 0x60: + init = nv40_create; + break; + case 0x80: + case 0x90: + case 0xa0: + init = nv50_create; + break; + default: + debug_printf("%s: unknown chipset nv%02x\n", __func__, chipset); + return NULL; + } + + /* Find a free slot for a pipe context, allocate a new one if needed */ + for (i = 0; i < nvpws->nr_pctx; i++) { + if (nvpws->pctx[i] == NULL) + break; + } + + if (i == nvpws->nr_pctx) { + nvpws->nr_pctx++; + nvpws->pctx = realloc(nvpws->pctx, + sizeof(*nvpws->pctx) * nvpws->nr_pctx); + } + + nvpws->pctx[i] = init(pscreen, i); + return nvpws->pctx[i]; +} + +static boolean +nouveau_drm_pb_from_pt(struct pipe_texture *pt, struct pipe_buffer **ppb, + unsigned *stride) +{ + return false; +} + +static struct pipe_buffer * +nouveau_drm_pb_from_handle(struct pipe_screen *pscreen, const char *name, + unsigned handle) +{ + struct nouveau_pipe_winsys *nvpws = nouveau_screen(pscreen); + struct nouveau_device *dev = nvpws->channel->device; + struct nouveau_pipe_buffer *nvpb; + int ret; + + nvpb = CALLOC_STRUCT(nouveau_pipe_buffer); + if (!nvpb) + return NULL; + + ret = nouveau_bo_handle_ref(dev, handle, &nvpb->bo); + if (ret) { + debug_printf("%s: ref name 0x%08x failed with %d\n", + __func__, handle, ret); + FREE(nvpb); + return NULL; + } + + pipe_reference_init(&nvpb->base.reference, 1); + nvpb->base.screen = pscreen; + nvpb->base.alignment = 0; + nvpb->base.usage = PIPE_BUFFER_USAGE_GPU_READ_WRITE | + PIPE_BUFFER_USAGE_CPU_READ_WRITE; + nvpb->base.size = nvpb->bo->size; + return &nvpb->base; +} + +static boolean +nouveau_drm_handle_from_pb(struct pipe_screen *pscreen, struct pipe_buffer *pb, + unsigned *handle) +{ + struct nouveau_pipe_buffer *nvpb = nouveau_pipe_buffer(pb); + + if (!nvpb) + return FALSE; + + *handle = nvpb->bo->handle; + return TRUE; +} + +static boolean +nouveau_drm_name_from_pb(struct pipe_screen *pscreen, struct pipe_buffer *pb, + unsigned *handle) +{ + struct nouveau_pipe_buffer *nvpb = nouveau_pipe_buffer(pb); + + if (!nvpb) + return FALSE; + + return nouveau_bo_handle_get(nvpb->bo, handle) == 0; +} + +struct drm_api drm_api_hooks = { + .create_screen = nouveau_drm_create_screen, + .create_context = nouveau_drm_create_context, + .buffer_from_texture = nouveau_drm_pb_from_pt, + .buffer_from_handle = nouveau_drm_pb_from_handle, + .handle_from_buffer = nouveau_drm_handle_from_pb, + .global_handle_from_buffer = nouveau_drm_name_from_pb, +}; + |