From f33b95801001376e10f2d1fd0433046defb06af4 Mon Sep 17 00:00:00 2001 From: Christian Gmeiner Date: Wed, 27 Jan 2021 13:32:57 +0100 Subject: [PATCH] vc4: add drm-shim Is enought to run shader-db. Signed-off-by: Christian Gmeiner Reviewed-by: Eric Anholt Part-of: --- src/broadcom/drm-shim/README.md | 10 ++++ src/broadcom/drm-shim/meson.build | 9 +++ src/broadcom/drm-shim/vc4_noop.c | 123 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 142 insertions(+) create mode 100644 src/broadcom/drm-shim/vc4_noop.c diff --git a/src/broadcom/drm-shim/README.md b/src/broadcom/drm-shim/README.md index dde21c1..16cbff7 100644 --- a/src/broadcom/drm-shim/README.md +++ b/src/broadcom/drm-shim/README.md @@ -15,3 +15,13 @@ The submit ioctl is stubbed out to not execute anything. Export `MESA_LOADER_DRIVER_OVERRIDE=v3d LD_PRELOAD=$prefix/lib/libv3d_noop_drm_shim.so`. This will be a V3D 4.2 device. + +### vc4_noop backend + +This implements the minimum of vc4 in order to make shader-db work. +The submit ioctl is stubbed out to not execute anything. + +Export `MESA_LOADER_DRIVER_OVERRIDE=vc4 +LD_PRELOAD=$prefix/lib/libvc4_noop_drm_shim.so`. This will be a VC4 +2.1 device. + diff --git a/src/broadcom/drm-shim/meson.build b/src/broadcom/drm-shim/meson.build index cbad070..b44b6c1 100644 --- a/src/broadcom/drm-shim/meson.build +++ b/src/broadcom/drm-shim/meson.build @@ -18,6 +18,15 @@ # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE # SOFTWARE. +libvc4_noop_drm_shim = shared_library( + ['vc4_noop_drm_shim'], + 'vc4_noop.c', + include_directories: [inc_include, inc_src, inc_mapi, inc_mesa, inc_gallium, inc_gallium_aux], + dependencies: dep_drm_shim, + gnu_symbol_visibility : 'hidden', + install : true, +) + libv3d_noop_drm_shim = shared_library( ['v3d_noop_drm_shim'], 'v3d_noop.c', diff --git a/src/broadcom/drm-shim/vc4_noop.c b/src/broadcom/drm-shim/vc4_noop.c new file mode 100644 index 0000000..3f85158 --- /dev/null +++ b/src/broadcom/drm-shim/vc4_noop.c @@ -0,0 +1,123 @@ +/* + * Copyright (c) 2021 Etnaviv Project + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#include +#include +#include +#include +#include "drm-uapi/vc4_drm.h" +#include "drm-shim/drm_shim.h" + +bool drm_shim_driver_prefers_first_render_node = true; + +static int +vc4_ioctl_noop(int fd, unsigned long request, void *arg) +{ + return 0; +} + +static int +vc4_ioctl_create_bo(int fd, unsigned long request, void *arg) +{ + struct shim_fd *shim_fd = drm_shim_fd_lookup(fd); + struct drm_vc4_create_bo *create = arg; + struct shim_bo *bo = calloc(1, sizeof(*bo)); + + drm_shim_bo_init(bo, create->size); + create->handle = drm_shim_bo_get_handle(shim_fd, bo); + drm_shim_bo_put(bo); + + return 0; +} + +static int +vc4_ioctl_mmap_bo(int fd, unsigned long request, void *arg) +{ + struct shim_fd *shim_fd = drm_shim_fd_lookup(fd); + struct drm_vc4_mmap_bo *map = arg; + struct shim_bo *bo = drm_shim_bo_lookup(shim_fd, map->handle); + + map->offset = drm_shim_bo_get_mmap_offset(shim_fd, bo); + + drm_shim_bo_put(bo); + + return 0; +} + +static int +vc4_ioctl_get_param(int fd, unsigned long request, void *arg) +{ + struct drm_vc4_get_param *gp = arg; + static const uint32_t param_map[] = { + [DRM_VC4_PARAM_V3D_IDENT0] = 0x2000000, + [DRM_VC4_PARAM_V3D_IDENT1] = 0x0000001, + }; + + switch (gp->param) { + case DRM_VC4_PARAM_SUPPORTS_BRANCHES: + case DRM_VC4_PARAM_SUPPORTS_ETC1: + case DRM_VC4_PARAM_SUPPORTS_THREADED_FS: + case DRM_VC4_PARAM_SUPPORTS_FIXED_RCL_ORDER: + gp->value = 1; + return 0; + + case DRM_VC4_PARAM_SUPPORTS_MADVISE: + case DRM_VC4_PARAM_SUPPORTS_PERFMON: + gp->value = 0; + return 0; + + default: + break; + } + + if (gp->param < ARRAY_SIZE(param_map) && param_map[gp->param]) { + gp->value = param_map[gp->param]; + return 0; + } + + fprintf(stderr, "Unknown DRM_IOCTL_VC4_GET_PARAM %d\n", gp->param); + return -1; +} + +static ioctl_fn_t driver_ioctls[] = { + [DRM_VC4_CREATE_BO] = vc4_ioctl_create_bo, + [DRM_VC4_MMAP_BO] = vc4_ioctl_mmap_bo, + [DRM_VC4_GET_PARAM] = vc4_ioctl_get_param, + [DRM_VC4_GET_TILING] = vc4_ioctl_noop, + [DRM_VC4_LABEL_BO] = vc4_ioctl_noop, +}; + +void +drm_shim_driver_init(void) +{ + shim_device.bus_type = DRM_BUS_PLATFORM; + shim_device.driver_name = "vc4"; + shim_device.driver_ioctls = driver_ioctls; + shim_device.driver_ioctl_count = ARRAY_SIZE(driver_ioctls); + + drm_shim_override_file("OF_FULLNAME=/rdb/vc4\n" + "OF_COMPATIBLE_N=1\n" + "OF_COMPATIBLE_0=brcm,7278-vc4\n", + "/sys/dev/char/%d:%d/device/uevent", + DRM_MAJOR, render_node_minor); +} -- 2.7.4