summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/tegra/gr3d.c
blob: 2bea2b2d204e809fd4dcc0b0bbaf7427317b8198 (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
/*
 * Copyright (C) 2013 Avionic Design GmbH
 * Copyright (C) 2013 NVIDIA Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/clk.h>
#include <linux/host1x.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/reset.h>
#include <linux/tegra-powergate.h>

#include "drm.h"
#include "gem.h"
#include "gr3d.h"

struct gr3d {
	struct tegra_drm_client client;
	struct host1x_channel *channel;
	struct clk *clk_secondary;
	struct clk *clk;
	struct reset_control *rst_secondary;
	struct reset_control *rst;

	DECLARE_BITMAP(addr_regs, GR3D_NUM_REGS);
};

static inline struct gr3d *to_gr3d(struct tegra_drm_client *client)
{
	return container_of(client, struct gr3d, client);
}

static int gr3d_init(struct host1x_client *client)
{
	struct tegra_drm_client *drm = host1x_to_drm_client(client);
	struct drm_device *dev = dev_get_drvdata(client->parent);
	unsigned long flags = HOST1X_SYNCPT_HAS_BASE;
	struct gr3d *gr3d = to_gr3d(drm);

	gr3d->channel = host1x_channel_request(client->dev);
	if (!gr3d->channel)
		return -ENOMEM;

	client->syncpts[0] = host1x_syncpt_request(client->dev, flags);
	if (!client->syncpts[0]) {
		host1x_channel_free(gr3d->channel);
		return -ENOMEM;
	}

	return tegra_drm_register_client(dev->dev_private, drm);
}

static int gr3d_exit(struct host1x_client *client)
{
	struct tegra_drm_client *drm = host1x_to_drm_client(client);
	struct drm_device *dev = dev_get_drvdata(client->parent);
	struct gr3d *gr3d = to_gr3d(drm);
	int err;

	err = tegra_drm_unregister_client(dev->dev_private, drm);
	if (err < 0)
		return err;

	host1x_syncpt_free(client->syncpts[0]);
	host1x_channel_free(gr3d->channel);

	return 0;
}

static const struct host1x_client_ops gr3d_client_ops = {
	.init = gr3d_init,
	.exit = gr3d_exit,
};

static int gr3d_open_channel(struct tegra_drm_client *client,
			     struct tegra_drm_context *context)
{
	struct gr3d *gr3d = to_gr3d(client);

	context->channel = host1x_channel_get(gr3d->channel);
	if (!context->channel)
		return -ENOMEM;

	return 0;
}

static void gr3d_close_channel(struct tegra_drm_context *context)
{
	host1x_channel_put(context->channel);
}

static int gr3d_is_addr_reg(struct device *dev, u32 class, u32 offset)
{
	struct gr3d *gr3d = dev_get_drvdata(dev);

	switch (class) {
	case HOST1X_CLASS_HOST1X:
		if (offset == 0x2b)
			return 1;

		break;

	case HOST1X_CLASS_GR3D:
		if (offset >= GR3D_NUM_REGS)
			break;

		if (test_bit(offset, gr3d->addr_regs))
			return 1;

		break;
	}

	return 0;
}

static const struct tegra_drm_client_ops gr3d_ops = {
	.open_channel = gr3d_open_channel,
	.close_channel = gr3d_close_channel,
	.is_addr_reg = gr3d_is_addr_reg,
	.submit = tegra_drm_submit,
};

static const struct of_device_id tegra_gr3d_match[] = {
	{ .compatible = "nvidia,tegra114-gr3d" },
	{ .compatible = "nvidia,tegra30-gr3d" },
	{ .compatible = "nvidia,tegra20-gr3d" },
	{ }
};
MODULE_DEVICE_TABLE(of, tegra_gr3d_match);

static const u32 gr3d_addr_regs[] = {
	GR3D_IDX_ATTRIBUTE( 0),
	GR3D_IDX_ATTRIBUTE( 1),
	GR3D_IDX_ATTRIBUTE( 2),
	GR3D_IDX_ATTRIBUTE( 3),
	GR3D_IDX_ATTRIBUTE( 4),
	GR3D_IDX_ATTRIBUTE( 5),
	GR3D_IDX_ATTRIBUTE( 6),
	GR3D_IDX_ATTRIBUTE( 7),
	GR3D_IDX_ATTRIBUTE( 8),
	GR3D_IDX_ATTRIBUTE( 9),
	GR3D_IDX_ATTRIBUTE(10),
	GR3D_IDX_ATTRIBUTE(11),
	GR3D_IDX_ATTRIBUTE(12),
	GR3D_IDX_ATTRIBUTE(13),
	GR3D_IDX_ATTRIBUTE(14),
	GR3D_IDX_ATTRIBUTE(15),
	GR3D_IDX_INDEX_BASE,
	GR3D_QR_ZTAG_ADDR,
	GR3D_QR_CTAG_ADDR,
	GR3D_QR_CZ_ADDR,
	GR3D_TEX_TEX_ADDR( 0),
	GR3D_TEX_TEX_ADDR( 1),
	GR3D_TEX_TEX_ADDR( 2),
	GR3D_TEX_TEX_ADDR( 3),
	GR3D_TEX_TEX_ADDR( 4),
	GR3D_TEX_TEX_ADDR( 5),
	GR3D_TEX_TEX_ADDR( 6),
	GR3D_TEX_TEX_ADDR( 7),
	GR3D_TEX_TEX_ADDR( 8),
	GR3D_TEX_TEX_ADDR( 9),
	GR3D_TEX_TEX_ADDR(10),
	GR3D_TEX_TEX_ADDR(11),
	GR3D_TEX_TEX_ADDR(12),
	GR3D_TEX_TEX_ADDR(13),
	GR3D_TEX_TEX_ADDR(14),
	GR3D_TEX_TEX_ADDR(15),
	GR3D_DW_MEMORY_OUTPUT_ADDRESS,
	GR3D_GLOBAL_SURFADDR( 0),
	GR3D_GLOBAL_SURFADDR( 1),
	GR3D_GLOBAL_SURFADDR( 2),
	GR3D_GLOBAL_SURFADDR( 3),
	GR3D_GLOBAL_SURFADDR( 4),
	GR3D_GLOBAL_SURFADDR( 5),
	GR3D_GLOBAL_SURFADDR( 6),
	GR3D_GLOBAL_SURFADDR( 7),
	GR3D_GLOBAL_SURFADDR( 8),
	GR3D_GLOBAL_SURFADDR( 9),
	GR3D_GLOBAL_SURFADDR(10),
	GR3D_GLOBAL_SURFADDR(11),
	GR3D_GLOBAL_SURFADDR(12),
	GR3D_GLOBAL_SURFADDR(13),
	GR3D_GLOBAL_SURFADDR(14),
	GR3D_GLOBAL_SURFADDR(15),
	GR3D_GLOBAL_SPILLSURFADDR,
	GR3D_GLOBAL_SURFOVERADDR( 0),
	GR3D_GLOBAL_SURFOVERADDR( 1),
	GR3D_GLOBAL_SURFOVERADDR( 2),
	GR3D_GLOBAL_SURFOVERADDR( 3),
	GR3D_GLOBAL_SURFOVERADDR( 4),
	GR3D_GLOBAL_SURFOVERADDR( 5),
	GR3D_GLOBAL_SURFOVERADDR( 6),
	GR3D_GLOBAL_SURFOVERADDR( 7),
	GR3D_GLOBAL_SURFOVERADDR( 8),
	GR3D_GLOBAL_SURFOVERADDR( 9),
	GR3D_GLOBAL_SURFOVERADDR(10),
	GR3D_GLOBAL_SURFOVERADDR(11),
	GR3D_GLOBAL_SURFOVERADDR(12),
	GR3D_GLOBAL_SURFOVERADDR(13),
	GR3D_GLOBAL_SURFOVERADDR(14),
	GR3D_GLOBAL_SURFOVERADDR(15),
	GR3D_GLOBAL_SAMP01SURFADDR( 0),
	GR3D_GLOBAL_SAMP01SURFADDR( 1),
	GR3D_GLOBAL_SAMP01SURFADDR( 2),
	GR3D_GLOBAL_SAMP01SURFADDR( 3),
	GR3D_GLOBAL_SAMP01SURFADDR( 4),
	GR3D_GLOBAL_SAMP01SURFADDR( 5),
	GR3D_GLOBAL_SAMP01SURFADDR( 6),
	GR3D_GLOBAL_SAMP01SURFADDR( 7),
	GR3D_GLOBAL_SAMP01SURFADDR( 8),
	GR3D_GLOBAL_SAMP01SURFADDR( 9),
	GR3D_GLOBAL_SAMP01SURFADDR(10),
	GR3D_GLOBAL_SAMP01SURFADDR(11),
	GR3D_GLOBAL_SAMP01SURFADDR(12),
	GR3D_GLOBAL_SAMP01SURFADDR(13),
	GR3D_GLOBAL_SAMP01SURFADDR(14),
	GR3D_GLOBAL_SAMP01SURFADDR(15),
	GR3D_GLOBAL_SAMP23SURFADDR( 0),
	GR3D_GLOBAL_SAMP23SURFADDR( 1),
	GR3D_GLOBAL_SAMP23SURFADDR( 2),
	GR3D_GLOBAL_SAMP23SURFADDR( 3),
	GR3D_GLOBAL_SAMP23SURFADDR( 4),
	GR3D_GLOBAL_SAMP23SURFADDR( 5),
	GR3D_GLOBAL_SAMP23SURFADDR( 6),
	GR3D_GLOBAL_SAMP23SURFADDR( 7),
	GR3D_GLOBAL_SAMP23SURFADDR( 8),
	GR3D_GLOBAL_SAMP23SURFADDR( 9),
	GR3D_GLOBAL_SAMP23SURFADDR(10),
	GR3D_GLOBAL_SAMP23SURFADDR(11),
	GR3D_GLOBAL_SAMP23SURFADDR(12),
	GR3D_GLOBAL_SAMP23SURFADDR(13),
	GR3D_GLOBAL_SAMP23SURFADDR(14),
	GR3D_GLOBAL_SAMP23SURFADDR(15),
};

static int gr3d_probe(struct platform_device *pdev)
{
	struct device_node *np = pdev->dev.of_node;
	struct host1x_syncpt **syncpts;
	struct gr3d *gr3d;
	unsigned int i;
	int err;

	gr3d = devm_kzalloc(&pdev->dev, sizeof(*gr3d), GFP_KERNEL);
	if (!gr3d)
		return -ENOMEM;

	syncpts = devm_kzalloc(&pdev->dev, sizeof(*syncpts), GFP_KERNEL);
	if (!syncpts)
		return -ENOMEM;

	gr3d->clk = devm_clk_get(&pdev->dev, NULL);
	if (IS_ERR(gr3d->clk)) {
		dev_err(&pdev->dev, "cannot get clock\n");
		return PTR_ERR(gr3d->clk);
	}

	gr3d->rst = devm_reset_control_get(&pdev->dev, "3d");
	if (IS_ERR(gr3d->rst)) {
		dev_err(&pdev->dev, "cannot get reset\n");
		return PTR_ERR(gr3d->rst);
	}

	if (of_device_is_compatible(np, "nvidia,tegra30-gr3d")) {
		gr3d->clk_secondary = devm_clk_get(&pdev->dev, "3d2");
		if (IS_ERR(gr3d->clk)) {
			dev_err(&pdev->dev, "cannot get secondary clock\n");
			return PTR_ERR(gr3d->clk);
		}

		gr3d->rst_secondary = devm_reset_control_get(&pdev->dev,
								"3d2");
		if (IS_ERR(gr3d->rst_secondary)) {
			dev_err(&pdev->dev, "cannot get secondary reset\n");
			return PTR_ERR(gr3d->rst_secondary);
		}
	}

	err = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_3D, gr3d->clk,
						gr3d->rst);
	if (err < 0) {
		dev_err(&pdev->dev, "failed to power up 3D unit\n");
		return err;
	}

	if (gr3d->clk_secondary) {
		err = tegra_powergate_sequence_power_up(TEGRA_POWERGATE_3D1,
							gr3d->clk_secondary,
							gr3d->rst_secondary);
		if (err < 0) {
			dev_err(&pdev->dev,
				"failed to power up secondary 3D unit\n");
			return err;
		}
	}

	INIT_LIST_HEAD(&gr3d->client.base.list);
	gr3d->client.base.ops = &gr3d_client_ops;
	gr3d->client.base.dev = &pdev->dev;
	gr3d->client.base.class = HOST1X_CLASS_GR3D;
	gr3d->client.base.syncpts = syncpts;
	gr3d->client.base.num_syncpts = 1;

	INIT_LIST_HEAD(&gr3d->client.list);
	gr3d->client.ops = &gr3d_ops;

	err = host1x_client_register(&gr3d->client.base);
	if (err < 0) {
		dev_err(&pdev->dev, "failed to register host1x client: %d\n",
			err);
		return err;
	}

	/* initialize address register map */
	for (i = 0; i < ARRAY_SIZE(gr3d_addr_regs); i++)
		set_bit(gr3d_addr_regs[i], gr3d->addr_regs);

	platform_set_drvdata(pdev, gr3d);

	return 0;
}

static int gr3d_remove(struct platform_device *pdev)
{
	struct gr3d *gr3d = platform_get_drvdata(pdev);
	int err;

	err = host1x_client_unregister(&gr3d->client.base);
	if (err < 0) {
		dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
			err);
		return err;
	}

	if (gr3d->clk_secondary) {
		tegra_powergate_power_off(TEGRA_POWERGATE_3D1);
		clk_disable_unprepare(gr3d->clk_secondary);
	}

	tegra_powergate_power_off(TEGRA_POWERGATE_3D);
	clk_disable_unprepare(gr3d->clk);

	return 0;
}

struct platform_driver tegra_gr3d_driver = {
	.driver = {
		.name = "tegra-gr3d",
		.of_match_table = tegra_gr3d_match,
	},
	.probe = gr3d_probe,
	.remove = gr3d_remove,
};