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/*
* Copyright © 2019 Google LLC
*
* 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 <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include "drm-uapi/msm_drm.h"
#include "drm-shim/drm_shim.h"
struct msm_bo {
struct shim_bo base;
uint32_t offset;
};
static struct msm_bo *
msm_bo(struct shim_bo *bo)
{
return (struct msm_bo *)bo;
}
struct msm_device {
uint32_t next_offset;
};
static struct msm_device msm = {
.next_offset = 0x1000,
};
static int
msm_ioctl_noop(int fd, unsigned long request, void *arg)
{
return 0;
}
static int
msm_ioctl_gem_new(int fd, unsigned long request, void *arg)
{
struct shim_fd *shim_fd = drm_shim_fd_lookup(fd);
struct drm_msm_gem_new *create = arg;
struct msm_bo *bo = calloc(1, sizeof(*bo));
drm_shim_bo_init(&bo->base, create->size);
assert(UINT_MAX - msm.next_offset > create->size);
bo->offset = msm.next_offset;
msm.next_offset += create->size;
create->handle = drm_shim_bo_get_handle(shim_fd, &bo->base);
drm_shim_bo_put(&bo->base);
return 0;
}
static int
msm_ioctl_gem_info(int fd, unsigned long request, void *arg)
{
struct shim_fd *shim_fd = drm_shim_fd_lookup(fd);
struct drm_msm_gem_info *args = arg;
struct shim_bo *bo = drm_shim_bo_lookup(shim_fd, args->handle);
switch (args->info) {
case MSM_INFO_GET_OFFSET:
args->value = drm_shim_bo_get_mmap_offset(shim_fd, bo);
break;
case MSM_INFO_GET_IOVA:
args->value = msm_bo(bo)->offset;
break;
case MSM_INFO_SET_NAME:
break;
default:
fprintf(stderr, "Unknown DRM_IOCTL_MSM_GEM_INFO %d\n", args->info);
drm_shim_bo_put(bo);
return -1;
}
drm_shim_bo_put(bo);
return 0;
}
static int
msm_ioctl_get_param(int fd, unsigned long request, void *arg)
{
struct drm_msm_param *gp = arg;
switch (gp->param) {
case MSM_PARAM_GPU_ID:
gp->value = 630;
return 0;
case MSM_PARAM_GMEM_SIZE:
gp->value = 1024 * 1024;
return 0;
case MSM_PARAM_GMEM_BASE:
gp->value = 0x100000;
return 0;
case MSM_PARAM_CHIP_ID:
gp->value = (6 << 24) | (3 << 16) | (0 << 8) | (0xff << 0);
return 0;
case MSM_PARAM_NR_RINGS:
gp->value = 1;
return 0;
case MSM_PARAM_MAX_FREQ:
gp->value = 1000000;
return 0;
case MSM_PARAM_TIMESTAMP:
gp->value = 0;
return 0;
case MSM_PARAM_PP_PGTABLE:
gp->value = 1;
return 0;
case MSM_PARAM_FAULTS:
gp->value = 0;
return 0;
default:
fprintf(stderr, "Unknown DRM_IOCTL_MSM_GET_PARAM %d\n",
gp->param);
return -1;
}
}
static int
msm_ioctl_gem_madvise(int fd, unsigned long request, void *arg)
{
struct drm_msm_gem_madvise *args = arg;
args->retained = true;
return 0;
}
static ioctl_fn_t driver_ioctls[] = {
[DRM_MSM_GET_PARAM] = msm_ioctl_get_param,
[DRM_MSM_GEM_NEW] = msm_ioctl_gem_new,
[DRM_MSM_GEM_INFO] = msm_ioctl_gem_info,
[DRM_MSM_GEM_CPU_PREP] = msm_ioctl_noop,
[DRM_MSM_GEM_CPU_FINI] = msm_ioctl_noop,
[DRM_MSM_GEM_SUBMIT] = msm_ioctl_noop,
[DRM_MSM_WAIT_FENCE] = msm_ioctl_noop,
[DRM_MSM_GEM_MADVISE] = msm_ioctl_gem_madvise,
[DRM_MSM_SUBMITQUEUE_NEW] = msm_ioctl_noop,
[DRM_MSM_SUBMITQUEUE_CLOSE] = msm_ioctl_noop,
[DRM_MSM_SUBMITQUEUE_QUERY] = msm_ioctl_noop,
};
void
drm_shim_driver_init(void)
{
shim_device.bus_type = DRM_BUS_PLATFORM;
shim_device.driver_name = "msm";
shim_device.driver_ioctls = driver_ioctls;
shim_device.driver_ioctl_count = ARRAY_SIZE(driver_ioctls);
/* msm uses the DRM version to expose features, instead of getparam. */
shim_device.version_major = 1;
shim_device.version_minor = 5;
shim_device.version_patchlevel = 0;
drm_shim_override_file("OF_FULLNAME=/rdb/msm\n"
"OF_COMPATIBLE_N=1\n"
"OF_COMPATIBLE_0=qcom,adreno\n",
"/sys/dev/char/%d:%d/device/uevent",
DRM_MAJOR, render_node_minor);
}
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