src/freedreno/drm-shim/freedreno_noop.c

   1 /*
   2  * Copyright © 2019 Google LLC
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include <limits.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <sys/ioctl.h>
  28 #include "drm-uapi/msm_drm.h"
  29 #include "drm-shim/drm_shim.h"
  30
  31 struct msm_bo {
  32         struct shim_bo base;
  33         uint32_t offset;
  34 };
  35
  36 static struct msm_bo *
  37 msm_bo(struct shim_bo *bo)
  38 {
  39         return (struct msm_bo *)bo;
  40 }
  41
  42 struct msm_device {
  43         uint32_t next_offset;
  44 };
  45
  46 static struct msm_device msm = {
  47         .next_offset = 0x1000,
  48 };
  49
  50 static int
  51 msm_ioctl_noop(int fd, unsigned long request, void *arg)
  52 {
  53         return 0;
  54 }
  55
  56 static int
  57 msm_ioctl_gem_new(int fd, unsigned long request, void *arg)
  58 {
  59         struct shim_fd *shim_fd = drm_shim_fd_lookup(fd);
  60         struct drm_msm_gem_new *create = arg;
  61         struct msm_bo *bo = calloc(1, sizeof(*bo));
  62
  63         drm_shim_bo_init(&bo->base, create->size);
  64
  65         assert(UINT_MAX - msm.next_offset > create->size);
  66
  67         bo->offset = msm.next_offset;
  68         msm.next_offset += create->size;
  69
  70         create->handle = drm_shim_bo_get_handle(shim_fd, &bo->base);
  71
  72         drm_shim_bo_put(&bo->base);
  73
  74         return 0;
  75 }
  76
  77 static int
  78 msm_ioctl_gem_info(int fd, unsigned long request, void *arg)
  79 {
  80         struct shim_fd *shim_fd = drm_shim_fd_lookup(fd);
  81         struct drm_msm_gem_info *args = arg;
  82         struct shim_bo *bo = drm_shim_bo_lookup(shim_fd, args->handle);
  83
  84         switch (args->info) {
  85         case MSM_INFO_GET_OFFSET:
  86                 args->value = drm_shim_bo_get_mmap_offset(shim_fd, bo);
  87                 break;
  88         case MSM_INFO_GET_IOVA:
  89                 args->value = msm_bo(bo)->offset;
  90                 break;
  91         case MSM_INFO_SET_NAME:
  92                 break;
  93         default:
  94                 fprintf(stderr, "Unknown DRM_IOCTL_MSM_GEM_INFO %d\n", args->info);
  95                 drm_shim_bo_put(bo);
  96                 return -1;
  97         }
  98
  99         drm_shim_bo_put(bo);
 100
 101         return 0;
 102 }
 103
 104 static int
 105 msm_ioctl_get_param(int fd, unsigned long request, void *arg)
 106 {
 107         struct drm_msm_param *gp = arg;
 108
 109         switch (gp->param) {
 110         case MSM_PARAM_GPU_ID:
 111                 gp->value = 630;
 112                 return 0;
 113         case MSM_PARAM_GMEM_SIZE:
 114                 gp->value = 1024 * 1024;
 115                 return 0;
 116         case MSM_PARAM_GMEM_BASE:
 117                 gp->value = 0x100000;
 118                 return 0;
 119         case MSM_PARAM_CHIP_ID:
 120                 gp->value = (6 << 24) | (3 << 16) | (0 << 8) | (0xff << 0);
 121                 return 0;
 122         case MSM_PARAM_NR_RINGS:
 123                 gp->value = 1;
 124                 return 0;
 125         case MSM_PARAM_MAX_FREQ:
 126                 gp->value = 1000000;
 127                 return 0;
 128         case MSM_PARAM_TIMESTAMP:
 129                 gp->value = 0;
 130                 return 0;
 131         case MSM_PARAM_PP_PGTABLE:
 132                 gp->value = 1;
 133                 return 0;
 134         case MSM_PARAM_FAULTS:
 135                 gp->value = 0;
 136                 return 0;
 137         default:
 138                 fprintf(stderr, "Unknown DRM_IOCTL_MSM_GET_PARAM %d\n",
 139                                 gp->param);
 140                 return -1;
 141         }
 142 }
 143
 144 static int
 145 msm_ioctl_gem_madvise(int fd, unsigned long request, void *arg)
 146 {
 147         struct drm_msm_gem_madvise *args = arg;
 148
 149         args->retained = true;
 150
 151         return 0;
 152 }
 153
 154 static ioctl_fn_t driver_ioctls[] = {
 155         [DRM_MSM_GET_PARAM] = msm_ioctl_get_param,
 156         [DRM_MSM_GEM_NEW] = msm_ioctl_gem_new,
 157         [DRM_MSM_GEM_INFO] = msm_ioctl_gem_info,
 158         [DRM_MSM_GEM_CPU_PREP] = msm_ioctl_noop,
 159         [DRM_MSM_GEM_CPU_FINI] = msm_ioctl_noop,
 160         [DRM_MSM_GEM_SUBMIT] = msm_ioctl_noop,
 161         [DRM_MSM_WAIT_FENCE] = msm_ioctl_noop,
 162         [DRM_MSM_GEM_MADVISE] = msm_ioctl_gem_madvise,
 163         [DRM_MSM_SUBMITQUEUE_NEW] = msm_ioctl_noop,
 164         [DRM_MSM_SUBMITQUEUE_CLOSE] = msm_ioctl_noop,
 165         [DRM_MSM_SUBMITQUEUE_QUERY] = msm_ioctl_noop,
 166 };
 167
 168 void
 169 drm_shim_driver_init(void)
 170 {
 171         shim_device.bus_type = DRM_BUS_PLATFORM;
 172         shim_device.driver_name = "msm";
 173         shim_device.driver_ioctls = driver_ioctls;
 174         shim_device.driver_ioctl_count = ARRAY_SIZE(driver_ioctls);
 175
 176         /* msm uses the DRM version to expose features, instead of getparam. */
 177         shim_device.version_major = 1;
 178         shim_device.version_minor = 5;
 179         shim_device.version_patchlevel = 0;
 180
 181         drm_shim_override_file("OF_FULLNAME=/rdb/msm\n"
 182                         "OF_COMPATIBLE_N=1\n"
 183                         "OF_COMPATIBLE_0=qcom,adreno\n",
 184                         "/sys/dev/char/%d:%d/device/uevent",
 185                         DRM_MAJOR, render_node_minor);
 186 }