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#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/mman.h>
#include <drm.h>
#include "dove_bufmgr.h"
#include "dove_ioctl.h"
#ifndef container_of
#define container_of(ptr, type, member) ({ \
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
#endif
struct dove_bo {
struct drm_dove_bo bo;
uint32_t ref;
uint32_t name; /* Global name */
};
#define to_dove_bo(_bo) container_of(_bo, struct dove_bo, bo)
#ifndef DRM_IOCTL_MODE_CREATE_DUMB
/* create a dumb scanout buffer */
struct drm_mode_create_dumb {
uint32_t height;
uint32_t width;
uint32_t bpp;
uint32_t flags;
/* handle, pitch, size will be returned */
uint32_t handle;
uint32_t pitch;
uint64_t size;
};
#define DRM_IOCTL_MODE_CREATE_DUMB DRM_IOWR(0xB2, struct drm_mode_create_dumb)
#endif
#ifndef DRM_IOCTL_MODE_DESTROY_DUMB
struct drm_mode_destroy_dumb {
uint32_t handle;
};
#define DRM_IOCTL_MODE_DESTROY_DUMB DRM_IOWR(0xB4, struct drm_mode_destroy_dumb)
#endif
#ifndef DRM_IOCTL_MODE_MAP_DUMB
struct drm_mode_map_dumb {
uint32_t handle;
uint32_t pad;
uint64_t offset;
};
#define DRM_IOCTL_MODE_MAP_DUMB DRM_IOWR(0xB3, struct drm_mode_map_dumb)
#endif
struct drm_dove_bo *drm_dove_bo_create_phys(int fd, uint32_t phys, size_t size)
{
struct dove_bo *bo;
bo = calloc(1, sizeof *bo);
if (bo) {
struct drm_dove_gem_create_phys arg;
int ret;
memset(&arg, 0, sizeof(arg));
arg.phys = phys;
arg.size = size;
ret = drmIoctl(fd, DRM_IOCTL_DOVE_GEM_CREATE_PHYS, &arg);
if (ret) {
free(bo);
return NULL;
}
bo->bo.ref = 1;
bo->bo.handle = arg.handle;
bo->bo.size = size;
bo->bo.phys = phys;
bo->bo.type = DRM_DOVE_BO_LINEAR;
bo->ref = 1;
}
return &bo->bo;
}
struct drm_dove_bo *drm_dove_bo_create(int fd, unsigned w, unsigned h, unsigned bpp)
{
struct dove_bo *bo;
bo = calloc(1, sizeof *bo);
if (bo) {
struct drm_dove_gem_create arg;
int ret;
memset(&arg, 0, sizeof(arg));
arg.width = w;
arg.height = h;
arg.bpp = bpp;
ret = drmIoctl(fd, DRM_IOCTL_DOVE_GEM_CREATE, &arg);
if (ret) {
free(bo);
return NULL;
}
bo->bo.ref = 1;
bo->bo.handle = arg.handle;
bo->bo.size = arg.size;
bo->bo.pitch = arg.pitch;
bo->bo.type = DRM_DOVE_BO_SHMEM;
bo->ref = 1;
}
return &bo->bo;
}
struct drm_dove_bo *drm_dove_bo_create_from_name(int fd, uint32_t name)
{
struct dove_bo *bo;
bo = calloc(1, sizeof *bo);
if (bo) {
struct drm_gem_open arg;
int ret;
memset(&arg, 0, sizeof(arg));
arg.name = name;
ret = drmIoctl(fd, DRM_IOCTL_GEM_OPEN, &arg);
if (ret == -1) {
free(bo);
return NULL;
}
bo->bo.ref = 1;
bo->bo.handle = arg.handle;
bo->bo.size = arg.size;
bo->bo.type = DRM_DOVE_BO_LINEAR; /* assumed */
bo->ref = 1;
bo->name = name;
}
return &bo->bo;
}
struct drm_dove_bo *drm_dove_bo_dumb_create(int fd, unsigned w, unsigned h,
unsigned bpp)
{
struct dove_bo *bo;
bo = calloc(1, sizeof *bo);
if (bo) {
struct drm_mode_create_dumb arg;
int ret;
memset(&arg, 0, sizeof(arg));
arg.width = w;
arg.height = h;
arg.bpp = bpp;
ret = drmIoctl(fd, DRM_IOCTL_MODE_CREATE_DUMB, &arg);
if (ret) {
free(bo);
return NULL;
}
bo->bo.ref = 1;
bo->bo.handle = arg.handle;
bo->bo.size = arg.size;
bo->bo.pitch = arg.pitch;
bo->bo.type = DRM_DOVE_BO_DUMB;
bo->ref = 1;
}
return &bo->bo;
}
void drm_dove_bo_get(int fd, struct drm_dove_bo *dbo)
{
struct dove_bo *bo = to_dove_bo(dbo);
bo->ref++;
}
void drm_dove_bo_put(int fd, struct drm_dove_bo *dbo)
{
struct dove_bo *bo = to_dove_bo(dbo);
if (bo->ref-- == 1) {
int ret;
if (bo->bo.ptr) {
munmap(bo->bo.ptr, bo->bo.size);
bo->bo.ptr = NULL;
}
if (bo->bo.type == DRM_DOVE_BO_DUMB) {
struct drm_mode_destroy_dumb arg;
memset(&arg, 0, sizeof(arg));
arg.handle = bo->bo.handle;
ret = drmIoctl(fd, DRM_IOCTL_MODE_DESTROY_DUMB, &arg);
} else {
struct drm_gem_close close;
memset(&close, 0, sizeof(close));
close.handle = bo->bo.handle;
ret = ioctl(fd, DRM_IOCTL_GEM_CLOSE, &close);
}
if (ret == 0)
free(bo);
}
}
int drm_dove_bo_flink(int fd, struct drm_dove_bo *dbo, uint32_t *name)
{
struct dove_bo *bo = to_dove_bo(dbo);
if (!bo->name) {
struct drm_gem_flink flink;
int ret;
memset(&flink, 0, sizeof(flink));
flink.handle = bo->bo.handle;
ret = ioctl(fd, DRM_IOCTL_GEM_FLINK, &flink);
if (ret)
return ret;
bo->name = flink.name;
}
*name = bo->name;
return 0;
}
int drm_dove_bo_map(int fd, struct drm_dove_bo *dbo)
{
struct dove_bo *bo = to_dove_bo(dbo);
void *map;
int ret;
if (bo->bo.ptr)
return 0;
if (bo->bo.type == DRM_DOVE_BO_DUMB) {
struct drm_mode_map_dumb arg;
memset(&arg, 0, sizeof(arg));
arg.handle = bo->bo.handle;
ret = drmIoctl(fd, DRM_IOCTL_MODE_MAP_DUMB, &arg);
if (ret)
return ret;
map = mmap(0, bo->bo.size, PROT_READ | PROT_WRITE, MAP_SHARED, fd,
arg.offset);
if (map == MAP_FAILED)
return -1;
} else if (bo->bo.type == DRM_DOVE_BO_SHMEM) {
struct drm_dove_gem_mmap arg;
memset(&arg, 0, sizeof(arg));
arg.handle = bo->bo.handle;
arg.offset = 0;
arg.size = bo->bo.size;
ret = drmIoctl(fd, DRM_IOCTL_DOVE_GEM_MMAP, &arg);
if (ret)
return -1;
map = (void *)(uintptr_t)arg.addr;
} else {
errno = EINVAL;
return -1;
}
bo->bo.ptr = map;
return 0;
}
uint32_t drm_dove_bo_phys(int fd, struct drm_dove_bo *dbo)
{
struct dove_bo *bo = to_dove_bo(dbo);
struct drm_dove_gem_prop arg;
int ret;
memset(&arg, 0, sizeof(arg));
arg.handle = bo->bo.handle;
ret = drmIoctl(fd, DRM_IOCTL_DOVE_GEM_PROP, &arg);
return ret ? -1 : (uint32_t)arg.phys;
}
int drm_dove_bo_subdata(int fd, struct drm_dove_bo *bo, unsigned long offset,
unsigned long size, const void *data)
{
struct drm_dove_gem_pwrite arg;
memset(&arg, 0, sizeof(arg));
arg.handle = bo->handle;
arg.offset = offset;
arg.size = size;
arg.ptr = (uint64_t)(uintptr_t)data;
return drmIoctl(fd, DRM_IOCTL_DOVE_GEM_PWRITE, &arg);
}
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