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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:22:22 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:22:22 +0000 |
commit | 3f13df4d019cfcbef3f9909e3b993896d3c934e6 (patch) | |
tree | 6c515810bee8549d81e68c548a26a63909f8e716 /exynos/exynos_drm.c | |
parent | Initial commit. (diff) | |
download | libdrm-upstream.tar.xz libdrm-upstream.zip |
Adding upstream version 2.4.114.upstream/2.4.114upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | exynos/exynos_drm.c | 444 |
1 files changed, 444 insertions, 0 deletions
diff --git a/exynos/exynos_drm.c b/exynos/exynos_drm.c new file mode 100644 index 0000000..3e322a1 --- /dev/null +++ b/exynos/exynos_drm.c @@ -0,0 +1,444 @@ +/* + * Copyright (C) 2012 Samsung Electronics Co., Ltd. + * + * 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. + * + * Authors: + * Inki Dae <inki.dae@samsung.com> + */ + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> + +#include <sys/mman.h> +#include <linux/stddef.h> + +#include <xf86drm.h> + +#include "libdrm_macros.h" +#include "exynos_drm.h" +#include "exynos_drmif.h" + +#define U642VOID(x) ((void *)(unsigned long)(x)) + +/* + * Create exynos drm device object. + * + * @fd: file descriptor to exynos drm driver opened. + * + * if true, return the device object else NULL. + */ +drm_public struct exynos_device * exynos_device_create(int fd) +{ + struct exynos_device *dev; + + dev = calloc(sizeof(*dev), 1); + if (!dev) { + fprintf(stderr, "failed to create device[%s].\n", + strerror(errno)); + return NULL; + } + + dev->fd = fd; + + return dev; +} + +/* + * Destroy exynos drm device object + * + * @dev: exynos drm device object. + */ +drm_public void exynos_device_destroy(struct exynos_device *dev) +{ + free(dev); +} + +/* + * Create a exynos buffer object to exynos drm device. + * + * @dev: exynos drm device object. + * @size: user-desired size. + * flags: user-desired memory type. + * user can set one or more types among several types to memory + * allocation and cache attribute types. and as default, + * EXYNOS_BO_NONCONTIG and EXYNOS-BO_NONCACHABLE types would + * be used. + * + * if true, return a exynos buffer object else NULL. + */ +drm_public struct exynos_bo * exynos_bo_create(struct exynos_device *dev, + size_t size, uint32_t flags) +{ + struct exynos_bo *bo; + struct drm_exynos_gem_create req = { + .size = size, + .flags = flags, + }; + + if (size == 0) { + fprintf(stderr, "invalid size.\n"); + goto fail; + } + + bo = calloc(sizeof(*bo), 1); + if (!bo) { + fprintf(stderr, "failed to create bo[%s].\n", + strerror(errno)); + goto err_free_bo; + } + + bo->dev = dev; + + if (drmIoctl(dev->fd, DRM_IOCTL_EXYNOS_GEM_CREATE, &req)){ + fprintf(stderr, "failed to create gem object[%s].\n", + strerror(errno)); + goto err_free_bo; + } + + bo->handle = req.handle; + bo->size = size; + bo->flags = flags; + + return bo; + +err_free_bo: + free(bo); +fail: + return NULL; +} + +/* + * Get information to gem region allocated. + * + * @dev: exynos drm device object. + * @handle: gem handle to request gem info. + * @size: size to gem object and returned by kernel side. + * @flags: gem flags to gem object and returned by kernel side. + * + * with this function call, you can get flags and size to gem handle + * through bo object. + * + * if true, return 0 else negative. + */ +drm_public int exynos_bo_get_info(struct exynos_device *dev, uint32_t handle, + size_t *size, uint32_t *flags) +{ + int ret; + struct drm_exynos_gem_info req = { + .handle = handle, + }; + + ret = drmIoctl(dev->fd, DRM_IOCTL_EXYNOS_GEM_GET, &req); + if (ret < 0) { + fprintf(stderr, "failed to get gem object information[%s].\n", + strerror(errno)); + return ret; + } + + *size = req.size; + *flags = req.flags; + + return 0; +} + +/* + * Destroy a exynos buffer object. + * + * @bo: a exynos buffer object to be destroyed. + */ +drm_public void exynos_bo_destroy(struct exynos_bo *bo) +{ + if (!bo) + return; + + if (bo->vaddr) + munmap(bo->vaddr, bo->size); + + if (bo->handle) { + drmCloseBufferHandle(bo->dev->fd, bo->handle); + } + + free(bo); +} + + +/* + * Get a exynos buffer object from a gem global object name. + * + * @dev: a exynos device object. + * @name: a gem global object name exported by another process. + * + * this interface is used to get a exynos buffer object from a gem + * global object name sent by another process for buffer sharing. + * + * if true, return a exynos buffer object else NULL. + * + */ +drm_public struct exynos_bo * +exynos_bo_from_name(struct exynos_device *dev, uint32_t name) +{ + struct exynos_bo *bo; + struct drm_gem_open req = { + .name = name, + }; + + bo = calloc(sizeof(*bo), 1); + if (!bo) { + fprintf(stderr, "failed to allocate bo[%s].\n", + strerror(errno)); + return NULL; + } + + if (drmIoctl(dev->fd, DRM_IOCTL_GEM_OPEN, &req)) { + fprintf(stderr, "failed to open gem object[%s].\n", + strerror(errno)); + goto err_free_bo; + } + + bo->dev = dev; + bo->name = name; + bo->handle = req.handle; + + return bo; + +err_free_bo: + free(bo); + return NULL; +} + +/* + * Get a gem global object name from a gem object handle. + * + * @bo: a exynos buffer object including gem handle. + * @name: a gem global object name to be got by kernel driver. + * + * this interface is used to get a gem global object name from a gem object + * handle to a buffer that wants to share it with another process. + * + * if true, return 0 else negative. + */ +drm_public int exynos_bo_get_name(struct exynos_bo *bo, uint32_t *name) +{ + if (!bo->name) { + struct drm_gem_flink req = { + .handle = bo->handle, + }; + int ret; + + ret = drmIoctl(bo->dev->fd, DRM_IOCTL_GEM_FLINK, &req); + if (ret) { + fprintf(stderr, "failed to get gem global name[%s].\n", + strerror(errno)); + return ret; + } + + bo->name = req.name; + } + + *name = bo->name; + + return 0; +} + +drm_public uint32_t exynos_bo_handle(struct exynos_bo *bo) +{ + return bo->handle; +} + +/* + * Mmap a buffer to user space. + * + * @bo: a exynos buffer object including a gem object handle to be mmapped + * to user space. + * + * if true, user pointer mmapped else NULL. + */ +drm_public void *exynos_bo_map(struct exynos_bo *bo) +{ + if (!bo->vaddr) { + struct exynos_device *dev = bo->dev; + struct drm_mode_map_dumb arg; + void *map = NULL; + int ret; + + memset(&arg, 0, sizeof(arg)); + arg.handle = bo->handle; + + ret = drmIoctl(dev->fd, DRM_IOCTL_MODE_MAP_DUMB, &arg); + if (ret) { + fprintf(stderr, "failed to map dumb buffer[%s].\n", + strerror(errno)); + return NULL; + } + + map = drm_mmap(0, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED, + dev->fd, arg.offset); + + if (map != MAP_FAILED) + bo->vaddr = map; + } + + return bo->vaddr; +} + +/* + * Export gem object to dmabuf as file descriptor. + * + * @dev: exynos device object + * @handle: gem handle to export as file descriptor of dmabuf + * @fd: file descriptor returned from kernel + * + * @return: 0 on success, -1 on error, and errno will be set + */ +drm_public int +exynos_prime_handle_to_fd(struct exynos_device *dev, uint32_t handle, int *fd) +{ + return drmPrimeHandleToFD(dev->fd, handle, 0, fd); +} + +/* + * Import file descriptor into gem handle. + * + * @dev: exynos device object + * @fd: file descriptor of dmabuf to import + * @handle: gem handle returned from kernel + * + * @return: 0 on success, -1 on error, and errno will be set + */ +drm_public int +exynos_prime_fd_to_handle(struct exynos_device *dev, int fd, uint32_t *handle) +{ + return drmPrimeFDToHandle(dev->fd, fd, handle); +} + + + +/* + * Request Wireless Display connection or disconnection. + * + * @dev: a exynos device object. + * @connect: indicate whether connectoin or disconnection request. + * @ext: indicate whether edid data includes extensions data or not. + * @edid: a pointer to edid data from Wireless Display device. + * + * this interface is used to request Virtual Display driver connection or + * disconnection. for this, user should get a edid data from the Wireless + * Display device and then send that data to kernel driver with connection + * request + * + * if true, return 0 else negative. + */ +drm_public int +exynos_vidi_connection(struct exynos_device *dev, uint32_t connect, + uint32_t ext, void *edid) +{ + struct drm_exynos_vidi_connection req = { + .connection = connect, + .extensions = ext, + .edid = (uint64_t)(uintptr_t)edid, + }; + int ret; + + ret = drmIoctl(dev->fd, DRM_IOCTL_EXYNOS_VIDI_CONNECTION, &req); + if (ret) { + fprintf(stderr, "failed to request vidi connection[%s].\n", + strerror(errno)); + return ret; + } + + return 0; +} + +static void +exynos_handle_vendor(int fd, struct drm_event *e, void *ctx) +{ + struct drm_exynos_g2d_event *g2d; + struct exynos_event_context *ectx = ctx; + + switch (e->type) { + case DRM_EXYNOS_G2D_EVENT: + if (ectx->version < 1 || ectx->g2d_event_handler == NULL) + break; + g2d = (struct drm_exynos_g2d_event *)e; + ectx->g2d_event_handler(fd, g2d->cmdlist_no, g2d->tv_sec, + g2d->tv_usec, U642VOID(g2d->user_data)); + break; + + default: + break; + } +} + +drm_public int +exynos_handle_event(struct exynos_device *dev, struct exynos_event_context *ctx) +{ + char buffer[1024]; + int len, i; + struct drm_event *e; + struct drm_event_vblank *vblank; + drmEventContextPtr evctx = &ctx->base; + + /* The DRM read semantics guarantees that we always get only + * complete events. */ + len = read(dev->fd, buffer, sizeof buffer); + if (len == 0) + return 0; + if (len < (int)sizeof *e) + return -1; + + i = 0; + while (i < len) { + e = (struct drm_event *)(buffer + i); + switch (e->type) { + case DRM_EVENT_VBLANK: + if (evctx->version < 1 || + evctx->vblank_handler == NULL) + break; + vblank = (struct drm_event_vblank *) e; + evctx->vblank_handler(dev->fd, + vblank->sequence, + vblank->tv_sec, + vblank->tv_usec, + U642VOID (vblank->user_data)); + break; + case DRM_EVENT_FLIP_COMPLETE: + if (evctx->version < 2 || + evctx->page_flip_handler == NULL) + break; + vblank = (struct drm_event_vblank *) e; + evctx->page_flip_handler(dev->fd, + vblank->sequence, + vblank->tv_sec, + vblank->tv_usec, + U642VOID (vblank->user_data)); + break; + default: + exynos_handle_vendor(dev->fd, e, evctx); + break; + } + i += e->length; + } + + return 0; +} |