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/*
* Copyright © 2018 Broadcom
*
* 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/v3d_drm.h"
#include "drm-shim/drm_shim.h"
bool drm_shim_driver_prefers_first_render_node = true;
struct v3d_bo {
struct shim_bo base;
uint32_t offset;
};
static struct v3d_bo *
v3d_bo(struct shim_bo *bo)
{
return (struct v3d_bo *)bo;
}
struct v3d_device {
uint32_t next_offset;
};
static struct v3d_device v3d = {
.next_offset = 0x1000,
};
static int
v3d_ioctl_noop(int fd, unsigned long request, void *arg)
{
return 0;
}
static int
v3d_ioctl_create_bo(int fd, unsigned long request, void *arg)
{
struct shim_fd *shim_fd = drm_shim_fd_lookup(fd);
struct drm_v3d_create_bo *create = arg;
struct v3d_bo *bo = calloc(1, sizeof(*bo));
drm_shim_bo_init(&bo->base, create->size);
assert(UINT_MAX - v3d.next_offset > create->size);
bo->offset = v3d.next_offset;
v3d.next_offset += create->size;
create->offset = bo->offset;
create->handle = drm_shim_bo_get_handle(shim_fd, &bo->base);
drm_shim_bo_put(&bo->base);
return 0;
}
static int
v3d_ioctl_get_bo_offset(int fd, unsigned long request, void *arg)
{
struct shim_fd *shim_fd = drm_shim_fd_lookup(fd);
struct drm_v3d_get_bo_offset *args = arg;
struct shim_bo *bo = drm_shim_bo_lookup(shim_fd, args->handle);
args->offset = v3d_bo(bo)->offset;
drm_shim_bo_put(bo);
return 0;
}
static int
v3d_ioctl_mmap_bo(int fd, unsigned long request, void *arg)
{
struct shim_fd *shim_fd = drm_shim_fd_lookup(fd);
struct drm_v3d_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
v3d_ioctl_get_param(int fd, unsigned long request, void *arg)
{
struct drm_v3d_get_param *gp = arg;
static const uint32_t v3d42_reg_map[] = {
[DRM_V3D_PARAM_V3D_UIFCFG] = 0x00000045,
[DRM_V3D_PARAM_V3D_HUB_IDENT1] = 0x000e1124,
[DRM_V3D_PARAM_V3D_HUB_IDENT2] = 0x00000100,
[DRM_V3D_PARAM_V3D_HUB_IDENT3] = 0x00000e00,
[DRM_V3D_PARAM_V3D_CORE0_IDENT0] = 0x04443356,
[DRM_V3D_PARAM_V3D_CORE0_IDENT1] = 0x81001422,
[DRM_V3D_PARAM_V3D_CORE0_IDENT2] = 0x40078121,
};
switch (gp->param) {
case DRM_V3D_PARAM_SUPPORTS_TFU:
gp->value = 1;
return 0;
default:
break;
}
if (gp->param < ARRAY_SIZE(v3d42_reg_map) && v3d42_reg_map[gp->param]) {
gp->value = v3d42_reg_map[gp->param];
return 0;
}
fprintf(stderr, "Unknown DRM_IOCTL_V3D_GET_PARAM %d\n", gp->param);
return -1;
}
static ioctl_fn_t driver_ioctls[] = {
[DRM_V3D_SUBMIT_CL] = v3d_ioctl_noop,
[DRM_V3D_SUBMIT_TFU] = v3d_ioctl_noop,
[DRM_V3D_WAIT_BO] = v3d_ioctl_noop,
[DRM_V3D_CREATE_BO] = v3d_ioctl_create_bo,
[DRM_V3D_GET_PARAM] = v3d_ioctl_get_param,
[DRM_V3D_GET_BO_OFFSET] = v3d_ioctl_get_bo_offset,
[DRM_V3D_MMAP_BO] = v3d_ioctl_mmap_bo,
};
void
drm_shim_driver_init(void)
{
shim_device.bus_type = DRM_BUS_PLATFORM;
shim_device.driver_name = "v3d";
shim_device.driver_ioctls = driver_ioctls;
shim_device.driver_ioctl_count = ARRAY_SIZE(driver_ioctls);
drm_shim_override_file("OF_FULLNAME=/rdb/v3d\n"
"OF_COMPATIBLE_N=1\n"
"OF_COMPATIBLE_0=brcm,7278-v3d\n",
"/sys/dev/char/%d:%d/device/uevent",
DRM_MAJOR, render_node_minor);
}
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