summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/lima/lima_drv.c
blob: 124efe4fa97b39a600507ebee57581561bab7efc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
// SPDX-License-Identifier: GPL-2.0 OR MIT
/* Copyright 2017-2019 Qiang Yu <yuq825@gmail.com> */

#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/uaccess.h>
#include <linux/slab.h>
#include <drm/drm_ioctl.h>
#include <drm/drm_drv.h>
#include <drm/drm_prime.h>
#include <drm/lima_drm.h>

#include "lima_drv.h"
#include "lima_gem.h"
#include "lima_vm.h"

int lima_sched_timeout_ms;

MODULE_PARM_DESC(sched_timeout_ms, "task run timeout in ms");
module_param_named(sched_timeout_ms, lima_sched_timeout_ms, int, 0444);

static int lima_ioctl_get_param(struct drm_device *dev, void *data, struct drm_file *file)
{
	struct drm_lima_get_param *args = data;
	struct lima_device *ldev = to_lima_dev(dev);

	if (args->pad)
		return -EINVAL;

	switch (args->param) {
	case DRM_LIMA_PARAM_GPU_ID:
		switch (ldev->id) {
		case lima_gpu_mali400:
			args->value = DRM_LIMA_PARAM_GPU_ID_MALI400;
			break;
		case lima_gpu_mali450:
			args->value = DRM_LIMA_PARAM_GPU_ID_MALI450;
			break;
		default:
			args->value = DRM_LIMA_PARAM_GPU_ID_UNKNOWN;
			break;
		}
		break;

	case DRM_LIMA_PARAM_NUM_PP:
		args->value = ldev->pipe[lima_pipe_pp].num_processor;
		break;

	case DRM_LIMA_PARAM_GP_VERSION:
		args->value = ldev->gp_version;
		break;

	case DRM_LIMA_PARAM_PP_VERSION:
		args->value = ldev->pp_version;
		break;

	default:
		return -EINVAL;
	}

	return 0;
}

static int lima_ioctl_gem_create(struct drm_device *dev, void *data, struct drm_file *file)
{
	struct drm_lima_gem_create *args = data;

	if (args->pad)
		return -EINVAL;

	if (args->flags)
		return -EINVAL;

	if (args->size == 0)
		return -EINVAL;

	return lima_gem_create_handle(dev, file, args->size, args->flags, &args->handle);
}

static int lima_ioctl_gem_info(struct drm_device *dev, void *data, struct drm_file *file)
{
	struct drm_lima_gem_info *args = data;

	return lima_gem_get_info(file, args->handle, &args->va, &args->offset);
}

static int lima_ioctl_gem_submit(struct drm_device *dev, void *data, struct drm_file *file)
{
	struct drm_lima_gem_submit *args = data;
	struct lima_device *ldev = to_lima_dev(dev);
	struct lima_drm_priv *priv = file->driver_priv;
	struct drm_lima_gem_submit_bo *bos;
	struct lima_sched_pipe *pipe;
	struct lima_sched_task *task;
	struct lima_ctx *ctx;
	struct lima_submit submit = {0};
	size_t size;
	int err = 0;

	if (args->pipe >= lima_pipe_num || args->nr_bos == 0)
		return -EINVAL;

	if (args->flags & ~(LIMA_SUBMIT_FLAG_EXPLICIT_FENCE))
		return -EINVAL;

	pipe = ldev->pipe + args->pipe;
	if (args->frame_size != pipe->frame_size)
		return -EINVAL;

	bos = kvcalloc(args->nr_bos, sizeof(*submit.bos) + sizeof(*submit.lbos), GFP_KERNEL);
	if (!bos)
		return -ENOMEM;

	size = args->nr_bos * sizeof(*submit.bos);
	if (copy_from_user(bos, u64_to_user_ptr(args->bos), size)) {
		err = -EFAULT;
		goto out0;
	}

	task = kmem_cache_zalloc(pipe->task_slab, GFP_KERNEL);
	if (!task) {
		err = -ENOMEM;
		goto out0;
	}

	task->frame = task + 1;
	if (copy_from_user(task->frame, u64_to_user_ptr(args->frame), args->frame_size)) {
		err = -EFAULT;
		goto out1;
	}

	err = pipe->task_validate(pipe, task);
	if (err)
		goto out1;

	ctx = lima_ctx_get(&priv->ctx_mgr, args->ctx);
	if (!ctx) {
		err = -ENOENT;
		goto out1;
	}

	submit.pipe = args->pipe;
	submit.bos = bos;
	submit.lbos = (void *)bos + size;
	submit.nr_bos = args->nr_bos;
	submit.task = task;
	submit.ctx = ctx;
	submit.flags = args->flags;
	submit.in_sync[0] = args->in_sync[0];
	submit.in_sync[1] = args->in_sync[1];
	submit.out_sync = args->out_sync;

	err = lima_gem_submit(file, &submit);

	lima_ctx_put(ctx);
out1:
	if (err)
		kmem_cache_free(pipe->task_slab, task);
out0:
	kvfree(bos);
	return err;
}

static int lima_ioctl_gem_wait(struct drm_device *dev, void *data, struct drm_file *file)
{
	struct drm_lima_gem_wait *args = data;

	if (args->op & ~(LIMA_GEM_WAIT_READ|LIMA_GEM_WAIT_WRITE))
		return -EINVAL;

	return lima_gem_wait(file, args->handle, args->op, args->timeout_ns);
}

static int lima_ioctl_ctx_create(struct drm_device *dev, void *data, struct drm_file *file)
{
	struct drm_lima_ctx_create *args = data;
	struct lima_drm_priv *priv = file->driver_priv;
	struct lima_device *ldev = to_lima_dev(dev);

	if (args->_pad)
		return -EINVAL;

	return lima_ctx_create(ldev, &priv->ctx_mgr, &args->id);
}

static int lima_ioctl_ctx_free(struct drm_device *dev, void *data, struct drm_file *file)
{
	struct drm_lima_ctx_create *args = data;
	struct lima_drm_priv *priv = file->driver_priv;

	if (args->_pad)
		return -EINVAL;

	return lima_ctx_free(&priv->ctx_mgr, args->id);
}

static int lima_drm_driver_open(struct drm_device *dev, struct drm_file *file)
{
	int err;
	struct lima_drm_priv *priv;
	struct lima_device *ldev = to_lima_dev(dev);

	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	priv->vm = lima_vm_create(ldev);
	if (!priv->vm) {
		err = -ENOMEM;
		goto err_out0;
	}

	lima_ctx_mgr_init(&priv->ctx_mgr);

	file->driver_priv = priv;
	return 0;

err_out0:
	kfree(priv);
	return err;
}

static void lima_drm_driver_postclose(struct drm_device *dev, struct drm_file *file)
{
	struct lima_drm_priv *priv = file->driver_priv;

	lima_ctx_mgr_fini(&priv->ctx_mgr);
	lima_vm_put(priv->vm);
	kfree(priv);
}

static const struct drm_ioctl_desc lima_drm_driver_ioctls[] = {
	DRM_IOCTL_DEF_DRV(LIMA_GET_PARAM, lima_ioctl_get_param, DRM_RENDER_ALLOW),
	DRM_IOCTL_DEF_DRV(LIMA_GEM_CREATE, lima_ioctl_gem_create, DRM_RENDER_ALLOW),
	DRM_IOCTL_DEF_DRV(LIMA_GEM_INFO, lima_ioctl_gem_info, DRM_RENDER_ALLOW),
	DRM_IOCTL_DEF_DRV(LIMA_GEM_SUBMIT, lima_ioctl_gem_submit, DRM_RENDER_ALLOW),
	DRM_IOCTL_DEF_DRV(LIMA_GEM_WAIT, lima_ioctl_gem_wait, DRM_RENDER_ALLOW),
	DRM_IOCTL_DEF_DRV(LIMA_CTX_CREATE, lima_ioctl_ctx_create, DRM_RENDER_ALLOW),
	DRM_IOCTL_DEF_DRV(LIMA_CTX_FREE, lima_ioctl_ctx_free, DRM_RENDER_ALLOW),
};

DEFINE_DRM_GEM_FOPS(lima_drm_driver_fops);

static struct drm_driver lima_drm_driver = {
	.driver_features    = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ,
	.open               = lima_drm_driver_open,
	.postclose          = lima_drm_driver_postclose,
	.ioctls             = lima_drm_driver_ioctls,
	.num_ioctls         = ARRAY_SIZE(lima_drm_driver_ioctls),
	.fops               = &lima_drm_driver_fops,
	.name               = "lima",
	.desc               = "lima DRM",
	.date               = "20190217",
	.major              = 1,
	.minor              = 0,
	.patchlevel         = 0,

	.gem_create_object  = lima_gem_create_object,
	.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
	.gem_prime_import_sg_table = drm_gem_shmem_prime_import_sg_table,
	.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
	.gem_prime_mmap = drm_gem_prime_mmap,
};

static int lima_pdev_probe(struct platform_device *pdev)
{
	struct lima_device *ldev;
	struct drm_device *ddev;
	int err;

	err = lima_sched_slab_init();
	if (err)
		return err;

	ldev = devm_kzalloc(&pdev->dev, sizeof(*ldev), GFP_KERNEL);
	if (!ldev) {
		err = -ENOMEM;
		goto err_out0;
	}

	ldev->pdev = pdev;
	ldev->dev = &pdev->dev;
	ldev->id = (enum lima_gpu_id)of_device_get_match_data(&pdev->dev);

	platform_set_drvdata(pdev, ldev);

	/* Allocate and initialize the DRM device. */
	ddev = drm_dev_alloc(&lima_drm_driver, &pdev->dev);
	if (IS_ERR(ddev))
		return PTR_ERR(ddev);

	ddev->dev_private = ldev;
	ldev->ddev = ddev;

	err = lima_device_init(ldev);
	if (err)
		goto err_out1;

	/*
	 * Register the DRM device with the core and the connectors with
	 * sysfs.
	 */
	err = drm_dev_register(ddev, 0);
	if (err < 0)
		goto err_out2;

	return 0;

err_out2:
	lima_device_fini(ldev);
err_out1:
	drm_dev_put(ddev);
err_out0:
	lima_sched_slab_fini();
	return err;
}

static int lima_pdev_remove(struct platform_device *pdev)
{
	struct lima_device *ldev = platform_get_drvdata(pdev);
	struct drm_device *ddev = ldev->ddev;

	drm_dev_unregister(ddev);
	lima_device_fini(ldev);
	drm_dev_put(ddev);
	lima_sched_slab_fini();
	return 0;
}

static const struct of_device_id dt_match[] = {
	{ .compatible = "arm,mali-400", .data = (void *)lima_gpu_mali400 },
	{ .compatible = "arm,mali-450", .data = (void *)lima_gpu_mali450 },
	{}
};
MODULE_DEVICE_TABLE(of, dt_match);

static struct platform_driver lima_platform_driver = {
	.probe      = lima_pdev_probe,
	.remove     = lima_pdev_remove,
	.driver     = {
		.name   = "lima",
		.of_match_table = dt_match,
	},
};

static int __init lima_init(void)
{
	return platform_driver_register(&lima_platform_driver);
}
module_init(lima_init);

static void __exit lima_exit(void)
{
	platform_driver_unregister(&lima_platform_driver);
}
module_exit(lima_exit);

MODULE_AUTHOR("Lima Project Developers");
MODULE_DESCRIPTION("Lima DRM Driver");
MODULE_LICENSE("GPL v2");