375 lines
9.0 KiB
C
375 lines
9.0 KiB
C
// SPDX-License-Identifier: GPL-2.0 OR MIT
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/* Copyright 2017-2019 Qiang Yu <yuq825@gmail.com> */
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#include <linux/module.h>
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#include <linux/of_platform.h>
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#include <linux/uaccess.h>
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#include <linux/slab.h>
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#include <drm/drm_ioctl.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_prime.h>
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#include <drm/lima_drm.h>
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#include "lima_drv.h"
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#include "lima_gem.h"
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#include "lima_gem_prime.h"
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#include "lima_vm.h"
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int lima_sched_timeout_ms;
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MODULE_PARM_DESC(sched_timeout_ms, "task run timeout in ms");
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module_param_named(sched_timeout_ms, lima_sched_timeout_ms, int, 0444);
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static int lima_ioctl_get_param(struct drm_device *dev, void *data, struct drm_file *file)
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{
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struct drm_lima_get_param *args = data;
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struct lima_device *ldev = to_lima_dev(dev);
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if (args->pad)
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return -EINVAL;
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switch (args->param) {
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case DRM_LIMA_PARAM_GPU_ID:
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switch (ldev->id) {
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case lima_gpu_mali400:
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args->value = DRM_LIMA_PARAM_GPU_ID_MALI400;
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break;
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case lima_gpu_mali450:
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args->value = DRM_LIMA_PARAM_GPU_ID_MALI450;
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break;
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default:
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args->value = DRM_LIMA_PARAM_GPU_ID_UNKNOWN;
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break;
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}
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break;
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case DRM_LIMA_PARAM_NUM_PP:
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args->value = ldev->pipe[lima_pipe_pp].num_processor;
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break;
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case DRM_LIMA_PARAM_GP_VERSION:
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args->value = ldev->gp_version;
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break;
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case DRM_LIMA_PARAM_PP_VERSION:
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args->value = ldev->pp_version;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int lima_ioctl_gem_create(struct drm_device *dev, void *data, struct drm_file *file)
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{
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struct drm_lima_gem_create *args = data;
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if (args->pad)
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return -EINVAL;
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if (args->flags)
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return -EINVAL;
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if (args->size == 0)
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return -EINVAL;
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return lima_gem_create_handle(dev, file, args->size, args->flags, &args->handle);
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}
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static int lima_ioctl_gem_info(struct drm_device *dev, void *data, struct drm_file *file)
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{
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struct drm_lima_gem_info *args = data;
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return lima_gem_get_info(file, args->handle, &args->va, &args->offset);
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}
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static int lima_ioctl_gem_submit(struct drm_device *dev, void *data, struct drm_file *file)
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{
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struct drm_lima_gem_submit *args = data;
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struct lima_device *ldev = to_lima_dev(dev);
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struct lima_drm_priv *priv = file->driver_priv;
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struct drm_lima_gem_submit_bo *bos;
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struct lima_sched_pipe *pipe;
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struct lima_sched_task *task;
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struct lima_ctx *ctx;
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struct lima_submit submit = {0};
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size_t size;
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int err = 0;
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if (args->pipe >= lima_pipe_num || args->nr_bos == 0)
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return -EINVAL;
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if (args->flags & ~(LIMA_SUBMIT_FLAG_EXPLICIT_FENCE))
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return -EINVAL;
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pipe = ldev->pipe + args->pipe;
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if (args->frame_size != pipe->frame_size)
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return -EINVAL;
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bos = kvcalloc(args->nr_bos, sizeof(*submit.bos) + sizeof(*submit.lbos), GFP_KERNEL);
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if (!bos)
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return -ENOMEM;
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size = args->nr_bos * sizeof(*submit.bos);
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if (copy_from_user(bos, u64_to_user_ptr(args->bos), size)) {
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err = -EFAULT;
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goto out0;
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}
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task = kmem_cache_zalloc(pipe->task_slab, GFP_KERNEL);
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if (!task) {
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err = -ENOMEM;
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goto out0;
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}
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task->frame = task + 1;
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if (copy_from_user(task->frame, u64_to_user_ptr(args->frame), args->frame_size)) {
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err = -EFAULT;
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goto out1;
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}
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err = pipe->task_validate(pipe, task);
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if (err)
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goto out1;
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ctx = lima_ctx_get(&priv->ctx_mgr, args->ctx);
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if (!ctx) {
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err = -ENOENT;
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goto out1;
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}
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submit.pipe = args->pipe;
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submit.bos = bos;
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submit.lbos = (void *)bos + size;
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submit.nr_bos = args->nr_bos;
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submit.task = task;
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submit.ctx = ctx;
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submit.flags = args->flags;
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submit.in_sync[0] = args->in_sync[0];
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submit.in_sync[1] = args->in_sync[1];
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submit.out_sync = args->out_sync;
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err = lima_gem_submit(file, &submit);
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lima_ctx_put(ctx);
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out1:
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if (err)
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kmem_cache_free(pipe->task_slab, task);
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out0:
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kvfree(bos);
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return err;
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}
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static int lima_ioctl_gem_wait(struct drm_device *dev, void *data, struct drm_file *file)
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{
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struct drm_lima_gem_wait *args = data;
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if (args->op & ~(LIMA_GEM_WAIT_READ|LIMA_GEM_WAIT_WRITE))
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return -EINVAL;
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return lima_gem_wait(file, args->handle, args->op, args->timeout_ns);
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}
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static int lima_ioctl_ctx_create(struct drm_device *dev, void *data, struct drm_file *file)
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{
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struct drm_lima_ctx_create *args = data;
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struct lima_drm_priv *priv = file->driver_priv;
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struct lima_device *ldev = to_lima_dev(dev);
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if (args->_pad)
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return -EINVAL;
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return lima_ctx_create(ldev, &priv->ctx_mgr, &args->id);
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}
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static int lima_ioctl_ctx_free(struct drm_device *dev, void *data, struct drm_file *file)
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{
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struct drm_lima_ctx_create *args = data;
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struct lima_drm_priv *priv = file->driver_priv;
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if (args->_pad)
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return -EINVAL;
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return lima_ctx_free(&priv->ctx_mgr, args->id);
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}
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static int lima_drm_driver_open(struct drm_device *dev, struct drm_file *file)
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{
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int err;
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struct lima_drm_priv *priv;
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struct lima_device *ldev = to_lima_dev(dev);
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priv = kzalloc(sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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priv->vm = lima_vm_create(ldev);
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if (!priv->vm) {
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err = -ENOMEM;
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goto err_out0;
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}
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lima_ctx_mgr_init(&priv->ctx_mgr);
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file->driver_priv = priv;
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return 0;
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err_out0:
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kfree(priv);
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return err;
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}
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static void lima_drm_driver_postclose(struct drm_device *dev, struct drm_file *file)
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{
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struct lima_drm_priv *priv = file->driver_priv;
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lima_ctx_mgr_fini(&priv->ctx_mgr);
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lima_vm_put(priv->vm);
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kfree(priv);
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}
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static const struct drm_ioctl_desc lima_drm_driver_ioctls[] = {
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DRM_IOCTL_DEF_DRV(LIMA_GET_PARAM, lima_ioctl_get_param, DRM_RENDER_ALLOW),
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DRM_IOCTL_DEF_DRV(LIMA_GEM_CREATE, lima_ioctl_gem_create, DRM_RENDER_ALLOW),
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DRM_IOCTL_DEF_DRV(LIMA_GEM_INFO, lima_ioctl_gem_info, DRM_RENDER_ALLOW),
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DRM_IOCTL_DEF_DRV(LIMA_GEM_SUBMIT, lima_ioctl_gem_submit, DRM_RENDER_ALLOW),
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DRM_IOCTL_DEF_DRV(LIMA_GEM_WAIT, lima_ioctl_gem_wait, DRM_RENDER_ALLOW),
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DRM_IOCTL_DEF_DRV(LIMA_CTX_CREATE, lima_ioctl_ctx_create, DRM_RENDER_ALLOW),
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DRM_IOCTL_DEF_DRV(LIMA_CTX_FREE, lima_ioctl_ctx_free, DRM_RENDER_ALLOW),
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};
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static const struct file_operations lima_drm_driver_fops = {
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.owner = THIS_MODULE,
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.open = drm_open,
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.release = drm_release,
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.unlocked_ioctl = drm_ioctl,
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#ifdef CONFIG_COMPAT
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.compat_ioctl = drm_compat_ioctl,
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#endif
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.mmap = lima_gem_mmap,
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};
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static struct drm_driver lima_drm_driver = {
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.driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ,
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.open = lima_drm_driver_open,
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.postclose = lima_drm_driver_postclose,
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.ioctls = lima_drm_driver_ioctls,
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.num_ioctls = ARRAY_SIZE(lima_drm_driver_ioctls),
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.fops = &lima_drm_driver_fops,
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.gem_free_object_unlocked = lima_gem_free_object,
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.gem_open_object = lima_gem_object_open,
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.gem_close_object = lima_gem_object_close,
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.gem_vm_ops = &lima_gem_vm_ops,
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.name = "lima",
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.desc = "lima DRM",
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.date = "20190217",
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.major = 1,
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.minor = 0,
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.patchlevel = 0,
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.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
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.gem_prime_import_sg_table = lima_gem_prime_import_sg_table,
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.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
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.gem_prime_get_sg_table = lima_gem_prime_get_sg_table,
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.gem_prime_mmap = lima_gem_prime_mmap,
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};
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static int lima_pdev_probe(struct platform_device *pdev)
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{
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struct lima_device *ldev;
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struct drm_device *ddev;
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int err;
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err = lima_sched_slab_init();
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if (err)
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return err;
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ldev = devm_kzalloc(&pdev->dev, sizeof(*ldev), GFP_KERNEL);
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if (!ldev) {
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err = -ENOMEM;
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goto err_out0;
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}
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ldev->pdev = pdev;
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ldev->dev = &pdev->dev;
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ldev->id = (enum lima_gpu_id)of_device_get_match_data(&pdev->dev);
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platform_set_drvdata(pdev, ldev);
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/* Allocate and initialize the DRM device. */
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ddev = drm_dev_alloc(&lima_drm_driver, &pdev->dev);
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if (IS_ERR(ddev))
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return PTR_ERR(ddev);
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ddev->dev_private = ldev;
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ldev->ddev = ddev;
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err = lima_device_init(ldev);
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if (err)
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goto err_out1;
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/*
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* Register the DRM device with the core and the connectors with
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* sysfs.
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*/
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err = drm_dev_register(ddev, 0);
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if (err < 0)
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goto err_out2;
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return 0;
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err_out2:
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lima_device_fini(ldev);
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err_out1:
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drm_dev_put(ddev);
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err_out0:
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lima_sched_slab_fini();
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return err;
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}
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static int lima_pdev_remove(struct platform_device *pdev)
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{
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struct lima_device *ldev = platform_get_drvdata(pdev);
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struct drm_device *ddev = ldev->ddev;
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drm_dev_unregister(ddev);
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lima_device_fini(ldev);
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drm_dev_put(ddev);
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lima_sched_slab_fini();
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return 0;
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}
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static const struct of_device_id dt_match[] = {
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{ .compatible = "arm,mali-400", .data = (void *)lima_gpu_mali400 },
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{ .compatible = "arm,mali-450", .data = (void *)lima_gpu_mali450 },
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{}
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};
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MODULE_DEVICE_TABLE(of, dt_match);
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static struct platform_driver lima_platform_driver = {
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.probe = lima_pdev_probe,
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.remove = lima_pdev_remove,
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.driver = {
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.name = "lima",
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.of_match_table = dt_match,
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},
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};
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static int __init lima_init(void)
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{
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return platform_driver_register(&lima_platform_driver);
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}
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module_init(lima_init);
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static void __exit lima_exit(void)
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{
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platform_driver_unregister(&lima_platform_driver);
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}
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module_exit(lima_exit);
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MODULE_AUTHOR("Lima Project Developers");
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MODULE_DESCRIPTION("Lima DRM Driver");
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MODULE_LICENSE("GPL v2");
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