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1// SPDX-License-Identifier: GPL-2.0 OR MIT
2/* Copyright 2017-2019 Qiang Yu <yuq825@gmail.com> */
3
4#include <linux/module.h>
5#include <linux/of_platform.h>
6#include <linux/uaccess.h>
7#include <linux/slab.h>
8#include <drm/drm_ioctl.h>
9#include <drm/drm_drv.h>
10#include <drm/drm_prime.h>
11#include <drm/lima_drm.h>
12
13#include "lima_drv.h"
14#include "lima_gem.h"
15#include "lima_gem_prime.h"
16#include "lima_vm.h"
17
18int lima_sched_timeout_ms;
19
20MODULE_PARM_DESC(sched_timeout_ms, "task run timeout in ms");
21module_param_named(sched_timeout_ms, lima_sched_timeout_ms, int, 0444);
22
23static int lima_ioctl_get_param(struct drm_device *dev, void *data, struct drm_file *file)
24{
25 struct drm_lima_get_param *args = data;
26 struct lima_device *ldev = to_lima_dev(dev);
27
28 if (args->pad)
29 return -EINVAL;
30
31 switch (args->param) {
32 case DRM_LIMA_PARAM_GPU_ID:
33 switch (ldev->id) {
34 case lima_gpu_mali400:
35 args->value = DRM_LIMA_PARAM_GPU_ID_MALI400;
36 break;
37 case lima_gpu_mali450:
38 args->value = DRM_LIMA_PARAM_GPU_ID_MALI450;
39 break;
40 default:
41 args->value = DRM_LIMA_PARAM_GPU_ID_UNKNOWN;
42 break;
43 }
44 break;
45
46 case DRM_LIMA_PARAM_NUM_PP:
47 args->value = ldev->pipe[lima_pipe_pp].num_processor;
48 break;
49
50 case DRM_LIMA_PARAM_GP_VERSION:
51 args->value = ldev->gp_version;
52 break;
53
54 case DRM_LIMA_PARAM_PP_VERSION:
55 args->value = ldev->pp_version;
56 break;
57
58 default:
59 return -EINVAL;
60 }
61
62 return 0;
63}
64
65static int lima_ioctl_gem_create(struct drm_device *dev, void *data, struct drm_file *file)
66{
67 struct drm_lima_gem_create *args = data;
68
69 if (args->pad)
70 return -EINVAL;
71
72 if (args->flags)
73 return -EINVAL;
74
75 if (args->size == 0)
76 return -EINVAL;
77
78 return lima_gem_create_handle(dev, file, args->size, args->flags, &args->handle);
79}
80
81static int lima_ioctl_gem_info(struct drm_device *dev, void *data, struct drm_file *file)
82{
83 struct drm_lima_gem_info *args = data;
84
85 return lima_gem_get_info(file, args->handle, &args->va, &args->offset);
86}
87
88static int lima_ioctl_gem_submit(struct drm_device *dev, void *data, struct drm_file *file)
89{
90 struct drm_lima_gem_submit *args = data;
91 struct lima_device *ldev = to_lima_dev(dev);
92 struct lima_drm_priv *priv = file->driver_priv;
93 struct drm_lima_gem_submit_bo *bos;
94 struct lima_sched_pipe *pipe;
95 struct lima_sched_task *task;
96 struct lima_ctx *ctx;
97 struct lima_submit submit = {0};
98 size_t size;
99 int err = 0;
100
101 if (args->pipe >= lima_pipe_num || args->nr_bos == 0)
102 return -EINVAL;
103
104 if (args->flags & ~(LIMA_SUBMIT_FLAG_EXPLICIT_FENCE))
105 return -EINVAL;
106
107 pipe = ldev->pipe + args->pipe;
108 if (args->frame_size != pipe->frame_size)
109 return -EINVAL;
110
111 bos = kvcalloc(args->nr_bos, sizeof(*submit.bos) + sizeof(*submit.lbos), GFP_KERNEL);
112 if (!bos)
113 return -ENOMEM;
114
115 size = args->nr_bos * sizeof(*submit.bos);
116 if (copy_from_user(bos, u64_to_user_ptr(args->bos), size)) {
117 err = -EFAULT;
118 goto out0;
119 }
120
121 task = kmem_cache_zalloc(pipe->task_slab, GFP_KERNEL);
122 if (!task) {
123 err = -ENOMEM;
124 goto out0;
125 }
126
127 task->frame = task + 1;
128 if (copy_from_user(task->frame, u64_to_user_ptr(args->frame), args->frame_size)) {
129 err = -EFAULT;
130 goto out1;
131 }
132
133 err = pipe->task_validate(pipe, task);
134 if (err)
135 goto out1;
136
137 ctx = lima_ctx_get(&priv->ctx_mgr, args->ctx);
138 if (!ctx) {
139 err = -ENOENT;
140 goto out1;
141 }
142
143 submit.pipe = args->pipe;
144 submit.bos = bos;
145 submit.lbos = (void *)bos + size;
146 submit.nr_bos = args->nr_bos;
147 submit.task = task;
148 submit.ctx = ctx;
149 submit.flags = args->flags;
150 submit.in_sync[0] = args->in_sync[0];
151 submit.in_sync[1] = args->in_sync[1];
152 submit.out_sync = args->out_sync;
153
154 err = lima_gem_submit(file, &submit);
155
156 lima_ctx_put(ctx);
157out1:
158 if (err)
159 kmem_cache_free(pipe->task_slab, task);
160out0:
161 kvfree(bos);
162 return err;
163}
164
165static int lima_ioctl_gem_wait(struct drm_device *dev, void *data, struct drm_file *file)
166{
167 struct drm_lima_gem_wait *args = data;
168
169 if (args->op & ~(LIMA_GEM_WAIT_READ|LIMA_GEM_WAIT_WRITE))
170 return -EINVAL;
171
172 return lima_gem_wait(file, args->handle, args->op, args->timeout_ns);
173}
174
175static int lima_ioctl_ctx_create(struct drm_device *dev, void *data, struct drm_file *file)
176{
177 struct drm_lima_ctx_create *args = data;
178 struct lima_drm_priv *priv = file->driver_priv;
179 struct lima_device *ldev = to_lima_dev(dev);
180
181 if (args->_pad)
182 return -EINVAL;
183
184 return lima_ctx_create(ldev, &priv->ctx_mgr, &args->id);
185}
186
187static int lima_ioctl_ctx_free(struct drm_device *dev, void *data, struct drm_file *file)
188{
189 struct drm_lima_ctx_create *args = data;
190 struct lima_drm_priv *priv = file->driver_priv;
191
192 if (args->_pad)
193 return -EINVAL;
194
195 return lima_ctx_free(&priv->ctx_mgr, args->id);
196}
197
198static int lima_drm_driver_open(struct drm_device *dev, struct drm_file *file)
199{
200 int err;
201 struct lima_drm_priv *priv;
202 struct lima_device *ldev = to_lima_dev(dev);
203
204 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
205 if (!priv)
206 return -ENOMEM;
207
208 priv->vm = lima_vm_create(ldev);
209 if (!priv->vm) {
210 err = -ENOMEM;
211 goto err_out0;
212 }
213
214 lima_ctx_mgr_init(&priv->ctx_mgr);
215
216 file->driver_priv = priv;
217 return 0;
218
219err_out0:
220 kfree(priv);
221 return err;
222}
223
224static void lima_drm_driver_postclose(struct drm_device *dev, struct drm_file *file)
225{
226 struct lima_drm_priv *priv = file->driver_priv;
227
228 lima_ctx_mgr_fini(&priv->ctx_mgr);
229 lima_vm_put(priv->vm);
230 kfree(priv);
231}
232
233static const struct drm_ioctl_desc lima_drm_driver_ioctls[] = {
234 DRM_IOCTL_DEF_DRV(LIMA_GET_PARAM, lima_ioctl_get_param, DRM_RENDER_ALLOW),
235 DRM_IOCTL_DEF_DRV(LIMA_GEM_CREATE, lima_ioctl_gem_create, DRM_RENDER_ALLOW),
236 DRM_IOCTL_DEF_DRV(LIMA_GEM_INFO, lima_ioctl_gem_info, DRM_RENDER_ALLOW),
237 DRM_IOCTL_DEF_DRV(LIMA_GEM_SUBMIT, lima_ioctl_gem_submit, DRM_RENDER_ALLOW),
238 DRM_IOCTL_DEF_DRV(LIMA_GEM_WAIT, lima_ioctl_gem_wait, DRM_RENDER_ALLOW),
239 DRM_IOCTL_DEF_DRV(LIMA_CTX_CREATE, lima_ioctl_ctx_create, DRM_RENDER_ALLOW),
240 DRM_IOCTL_DEF_DRV(LIMA_CTX_FREE, lima_ioctl_ctx_free, DRM_RENDER_ALLOW),
241};
242
243static const struct file_operations lima_drm_driver_fops = {
244 .owner = THIS_MODULE,
245 .open = drm_open,
246 .release = drm_release,
247 .unlocked_ioctl = drm_ioctl,
248#ifdef CONFIG_COMPAT
249 .compat_ioctl = drm_compat_ioctl,
250#endif
251 .mmap = lima_gem_mmap,
252};
253
254static struct drm_driver lima_drm_driver = {
255 .driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ,
256 .open = lima_drm_driver_open,
257 .postclose = lima_drm_driver_postclose,
258 .ioctls = lima_drm_driver_ioctls,
259 .num_ioctls = ARRAY_SIZE(lima_drm_driver_ioctls),
260 .fops = &lima_drm_driver_fops,
261 .gem_free_object_unlocked = lima_gem_free_object,
262 .gem_open_object = lima_gem_object_open,
263 .gem_close_object = lima_gem_object_close,
264 .gem_vm_ops = &lima_gem_vm_ops,
265 .name = "lima",
266 .desc = "lima DRM",
267 .date = "20190217",
268 .major = 1,
269 .minor = 0,
270 .patchlevel = 0,
271
272 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
273 .gem_prime_import_sg_table = lima_gem_prime_import_sg_table,
274 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
275 .gem_prime_get_sg_table = lima_gem_prime_get_sg_table,
276 .gem_prime_mmap = lima_gem_prime_mmap,
277};
278
279static int lima_pdev_probe(struct platform_device *pdev)
280{
281 struct lima_device *ldev;
282 struct drm_device *ddev;
283 int err;
284
285 err = lima_sched_slab_init();
286 if (err)
287 return err;
288
289 ldev = devm_kzalloc(&pdev->dev, sizeof(*ldev), GFP_KERNEL);
290 if (!ldev) {
291 err = -ENOMEM;
292 goto err_out0;
293 }
294
295 ldev->pdev = pdev;
296 ldev->dev = &pdev->dev;
297 ldev->id = (enum lima_gpu_id)of_device_get_match_data(&pdev->dev);
298
299 platform_set_drvdata(pdev, ldev);
300
301 /* Allocate and initialize the DRM device. */
302 ddev = drm_dev_alloc(&lima_drm_driver, &pdev->dev);
303 if (IS_ERR(ddev))
304 return PTR_ERR(ddev);
305
306 ddev->dev_private = ldev;
307 ldev->ddev = ddev;
308
309 err = lima_device_init(ldev);
310 if (err)
311 goto err_out1;
312
313 /*
314 * Register the DRM device with the core and the connectors with
315 * sysfs.
316 */
317 err = drm_dev_register(ddev, 0);
318 if (err < 0)
319 goto err_out2;
320
321 return 0;
322
323err_out2:
324 lima_device_fini(ldev);
325err_out1:
326 drm_dev_put(ddev);
327err_out0:
328 lima_sched_slab_fini();
329 return err;
330}
331
332static int lima_pdev_remove(struct platform_device *pdev)
333{
334 struct lima_device *ldev = platform_get_drvdata(pdev);
335 struct drm_device *ddev = ldev->ddev;
336
337 drm_dev_unregister(ddev);
338 lima_device_fini(ldev);
339 drm_dev_put(ddev);
340 lima_sched_slab_fini();
341 return 0;
342}
343
344static const struct of_device_id dt_match[] = {
345 { .compatible = "arm,mali-400", .data = (void *)lima_gpu_mali400 },
346 { .compatible = "arm,mali-450", .data = (void *)lima_gpu_mali450 },
347 {}
348};
349MODULE_DEVICE_TABLE(of, dt_match);
350
351static struct platform_driver lima_platform_driver = {
352 .probe = lima_pdev_probe,
353 .remove = lima_pdev_remove,
354 .driver = {
355 .name = "lima",
356 .of_match_table = dt_match,
357 },
358};
359
360static int __init lima_init(void)
361{
362 return platform_driver_register(&lima_platform_driver);
363}
364module_init(lima_init);
365
366static void __exit lima_exit(void)
367{
368 platform_driver_unregister(&lima_platform_driver);
369}
370module_exit(lima_exit);
371
372MODULE_AUTHOR("Lima Project Developers");
373MODULE_DESCRIPTION("Lima DRM Driver");
374MODULE_LICENSE("GPL v2");