1/*
2 * Copyright 2013 Advanced Micro Devices, Inc.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
16 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
17 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
18 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
19 * USE OR OTHER DEALINGS IN THE SOFTWARE.
20 *
21 * The above copyright notice and this permission notice (including the
22 * next paragraph) shall be included in all copies or substantial portions
23 * of the Software.
24 *
25 * Authors: Christian K��nig <christian.koenig@amd.com>
26 */
27
28#include <linux/firmware.h>
29
30#include "radeon.h"
31#include "radeon_asic.h"
32#include "sid.h"
33#include "vce.h"
34
35#define VCE_V1_0_FW_SIZE	(256 * 1024)
36#define VCE_V1_0_STACK_SIZE	(64 * 1024)
37#define VCE_V1_0_DATA_SIZE	(7808 * (RADEON_MAX_VCE_HANDLES + 1))
38
39struct vce_v1_0_fw_signature
40{
41	int32_t off;
42	uint32_t len;
43	int32_t num;
44	struct {
45		uint32_t chip_id;
46		uint32_t keyselect;
47		uint32_t nonce[4];
48		uint32_t sigval[4];
49	} val[8];
50};
51
52/**
53 * vce_v1_0_get_rptr - get read pointer
54 *
55 * @rdev: radeon_device pointer
56 * @ring: radeon_ring pointer
57 *
58 * Returns the current hardware read pointer
59 */
60uint32_t vce_v1_0_get_rptr(struct radeon_device *rdev,
61			   struct radeon_ring *ring)
62{
63	if (ring->idx == TN_RING_TYPE_VCE1_INDEX)
64		return RREG32(VCE_RB_RPTR);
65	else
66		return RREG32(VCE_RB_RPTR2);
67}
68
69/**
70 * vce_v1_0_get_wptr - get write pointer
71 *
72 * @rdev: radeon_device pointer
73 * @ring: radeon_ring pointer
74 *
75 * Returns the current hardware write pointer
76 */
77uint32_t vce_v1_0_get_wptr(struct radeon_device *rdev,
78			   struct radeon_ring *ring)
79{
80	if (ring->idx == TN_RING_TYPE_VCE1_INDEX)
81		return RREG32(VCE_RB_WPTR);
82	else
83		return RREG32(VCE_RB_WPTR2);
84}
85
86/**
87 * vce_v1_0_set_wptr - set write pointer
88 *
89 * @rdev: radeon_device pointer
90 * @ring: radeon_ring pointer
91 *
92 * Commits the write pointer to the hardware
93 */
94void vce_v1_0_set_wptr(struct radeon_device *rdev,
95		       struct radeon_ring *ring)
96{
97	if (ring->idx == TN_RING_TYPE_VCE1_INDEX)
98		WREG32(VCE_RB_WPTR, ring->wptr);
99	else
100		WREG32(VCE_RB_WPTR2, ring->wptr);
101}
102
103void vce_v1_0_enable_mgcg(struct radeon_device *rdev, bool enable)
104{
105	u32 tmp;
106
107	if (enable && (rdev->cg_flags & RADEON_CG_SUPPORT_VCE_MGCG)) {
108		tmp = RREG32(VCE_CLOCK_GATING_A);
109		tmp |= CGC_DYN_CLOCK_MODE;
110		WREG32(VCE_CLOCK_GATING_A, tmp);
111
112		tmp = RREG32(VCE_UENC_CLOCK_GATING);
113		tmp &= ~0x1ff000;
114		tmp |= 0xff800000;
115		WREG32(VCE_UENC_CLOCK_GATING, tmp);
116
117		tmp = RREG32(VCE_UENC_REG_CLOCK_GATING);
118		tmp &= ~0x3ff;
119		WREG32(VCE_UENC_REG_CLOCK_GATING, tmp);
120	} else {
121		tmp = RREG32(VCE_CLOCK_GATING_A);
122		tmp &= ~CGC_DYN_CLOCK_MODE;
123		WREG32(VCE_CLOCK_GATING_A, tmp);
124
125		tmp = RREG32(VCE_UENC_CLOCK_GATING);
126		tmp |= 0x1ff000;
127		tmp &= ~0xff800000;
128		WREG32(VCE_UENC_CLOCK_GATING, tmp);
129
130		tmp = RREG32(VCE_UENC_REG_CLOCK_GATING);
131		tmp |= 0x3ff;
132		WREG32(VCE_UENC_REG_CLOCK_GATING, tmp);
133	}
134}
135
136static void vce_v1_0_init_cg(struct radeon_device *rdev)
137{
138	u32 tmp;
139
140	tmp = RREG32(VCE_CLOCK_GATING_A);
141	tmp |= CGC_DYN_CLOCK_MODE;
142	WREG32(VCE_CLOCK_GATING_A, tmp);
143
144	tmp = RREG32(VCE_CLOCK_GATING_B);
145	tmp |= 0x1e;
146	tmp &= ~0xe100e1;
147	WREG32(VCE_CLOCK_GATING_B, tmp);
148
149	tmp = RREG32(VCE_UENC_CLOCK_GATING);
150	tmp &= ~0xff9ff000;
151	WREG32(VCE_UENC_CLOCK_GATING, tmp);
152
153	tmp = RREG32(VCE_UENC_REG_CLOCK_GATING);
154	tmp &= ~0x3ff;
155	WREG32(VCE_UENC_REG_CLOCK_GATING, tmp);
156}
157
158int vce_v1_0_load_fw(struct radeon_device *rdev, uint32_t *data)
159{
160	struct vce_v1_0_fw_signature *sign = (void*)rdev->vce_fw->data;
161	uint32_t chip_id;
162	int i;
163
164	switch (rdev->family) {
165	case CHIP_TAHITI:
166		chip_id = 0x01000014;
167		break;
168	case CHIP_VERDE:
169		chip_id = 0x01000015;
170		break;
171	case CHIP_PITCAIRN:
172		chip_id = 0x01000016;
173		break;
174	case CHIP_ARUBA:
175		chip_id = 0x01000017;
176		break;
177	default:
178		return -EINVAL;
179	}
180
181	for (i = 0; i < le32_to_cpu(sign->num); ++i) {
182		if (le32_to_cpu(sign->val[i].chip_id) == chip_id)
183			break;
184	}
185
186	if (i == le32_to_cpu(sign->num))
187		return -EINVAL;
188
189	data += (256 - 64) / 4;
190	data[0] = sign->val[i].nonce[0];
191	data[1] = sign->val[i].nonce[1];
192	data[2] = sign->val[i].nonce[2];
193	data[3] = sign->val[i].nonce[3];
194	data[4] = cpu_to_le32(le32_to_cpu(sign->len) + 64);
195
196	memset(&data[5], 0, 44);
197	memcpy(&data[16], &sign[1], rdev->vce_fw->size - sizeof(*sign));
198
199	data += (le32_to_cpu(sign->len) + 64) / 4;
200	data[0] = sign->val[i].sigval[0];
201	data[1] = sign->val[i].sigval[1];
202	data[2] = sign->val[i].sigval[2];
203	data[3] = sign->val[i].sigval[3];
204
205	rdev->vce.keyselect = le32_to_cpu(sign->val[i].keyselect);
206
207	return 0;
208}
209
210unsigned vce_v1_0_bo_size(struct radeon_device *rdev)
211{
212	WARN_ON(VCE_V1_0_FW_SIZE < rdev->vce_fw->size);
213	return VCE_V1_0_FW_SIZE + VCE_V1_0_STACK_SIZE + VCE_V1_0_DATA_SIZE;
214}
215
216int vce_v1_0_resume(struct radeon_device *rdev)
217{
218	uint64_t addr = rdev->vce.gpu_addr;
219	uint32_t size;
220	int i;
221
222	WREG32_P(VCE_CLOCK_GATING_A, 0, ~(1 << 16));
223	WREG32_P(VCE_UENC_CLOCK_GATING, 0x1FF000, ~0xFF9FF000);
224	WREG32_P(VCE_UENC_REG_CLOCK_GATING, 0x3F, ~0x3F);
225	WREG32(VCE_CLOCK_GATING_B, 0);
226
227	WREG32_P(VCE_LMI_FW_PERIODIC_CTRL, 0x4, ~0x4);
228
229	WREG32(VCE_LMI_CTRL, 0x00398000);
230	WREG32_P(VCE_LMI_CACHE_CTRL, 0x0, ~0x1);
231	WREG32(VCE_LMI_SWAP_CNTL, 0);
232	WREG32(VCE_LMI_SWAP_CNTL1, 0);
233	WREG32(VCE_LMI_VM_CTRL, 0);
234
235	WREG32(VCE_VCPU_SCRATCH7, RADEON_MAX_VCE_HANDLES);
236
237	addr += 256;
238	size = VCE_V1_0_FW_SIZE;
239	WREG32(VCE_VCPU_CACHE_OFFSET0, addr & 0x7fffffff);
240	WREG32(VCE_VCPU_CACHE_SIZE0, size);
241
242	addr += size;
243	size = VCE_V1_0_STACK_SIZE;
244	WREG32(VCE_VCPU_CACHE_OFFSET1, addr & 0x7fffffff);
245	WREG32(VCE_VCPU_CACHE_SIZE1, size);
246
247	addr += size;
248	size = VCE_V1_0_DATA_SIZE;
249	WREG32(VCE_VCPU_CACHE_OFFSET2, addr & 0x7fffffff);
250	WREG32(VCE_VCPU_CACHE_SIZE2, size);
251
252	WREG32_P(VCE_LMI_CTRL2, 0x0, ~0x100);
253
254	WREG32(VCE_LMI_FW_START_KEYSEL, rdev->vce.keyselect);
255
256	for (i = 0; i < 10; ++i) {
257		mdelay(10);
258		if (RREG32(VCE_FW_REG_STATUS) & VCE_FW_REG_STATUS_DONE)
259			break;
260	}
261
262	if (i == 10)
263		return -ETIMEDOUT;
264
265	if (!(RREG32(VCE_FW_REG_STATUS) & VCE_FW_REG_STATUS_PASS))
266		return -EINVAL;
267
268	for (i = 0; i < 10; ++i) {
269		mdelay(10);
270		if (!(RREG32(VCE_FW_REG_STATUS) & VCE_FW_REG_STATUS_BUSY))
271			break;
272	}
273
274	if (i == 10)
275		return -ETIMEDOUT;
276
277	vce_v1_0_init_cg(rdev);
278
279	return 0;
280}
281
282/**
283 * vce_v1_0_start - start VCE block
284 *
285 * @rdev: radeon_device pointer
286 *
287 * Setup and start the VCE block
288 */
289int vce_v1_0_start(struct radeon_device *rdev)
290{
291	struct radeon_ring *ring;
292	int i, j, r;
293
294	/* set BUSY flag */
295	WREG32_P(VCE_STATUS, 1, ~1);
296
297	ring = &rdev->ring[TN_RING_TYPE_VCE1_INDEX];
298	WREG32(VCE_RB_RPTR, ring->wptr);
299	WREG32(VCE_RB_WPTR, ring->wptr);
300	WREG32(VCE_RB_BASE_LO, ring->gpu_addr);
301	WREG32(VCE_RB_BASE_HI, upper_32_bits(ring->gpu_addr));
302	WREG32(VCE_RB_SIZE, ring->ring_size / 4);
303
304	ring = &rdev->ring[TN_RING_TYPE_VCE2_INDEX];
305	WREG32(VCE_RB_RPTR2, ring->wptr);
306	WREG32(VCE_RB_WPTR2, ring->wptr);
307	WREG32(VCE_RB_BASE_LO2, ring->gpu_addr);
308	WREG32(VCE_RB_BASE_HI2, upper_32_bits(ring->gpu_addr));
309	WREG32(VCE_RB_SIZE2, ring->ring_size / 4);
310
311	WREG32_P(VCE_VCPU_CNTL, VCE_CLK_EN, ~VCE_CLK_EN);
312
313	WREG32_P(VCE_SOFT_RESET,
314		 VCE_ECPU_SOFT_RESET |
315		 VCE_FME_SOFT_RESET, ~(
316		 VCE_ECPU_SOFT_RESET |
317		 VCE_FME_SOFT_RESET));
318
319	mdelay(100);
320
321	WREG32_P(VCE_SOFT_RESET, 0, ~(
322		 VCE_ECPU_SOFT_RESET |
323		 VCE_FME_SOFT_RESET));
324
325	for (i = 0; i < 10; ++i) {
326		uint32_t status;
327		for (j = 0; j < 100; ++j) {
328			status = RREG32(VCE_STATUS);
329			if (status & 2)
330				break;
331			mdelay(10);
332		}
333		r = 0;
334		if (status & 2)
335			break;
336
337		DRM_ERROR("VCE not responding, trying to reset the ECPU!!!\n");
338		WREG32_P(VCE_SOFT_RESET, VCE_ECPU_SOFT_RESET, ~VCE_ECPU_SOFT_RESET);
339		mdelay(10);
340		WREG32_P(VCE_SOFT_RESET, 0, ~VCE_ECPU_SOFT_RESET);
341		mdelay(10);
342		r = -1;
343	}
344
345	/* clear BUSY flag */
346	WREG32_P(VCE_STATUS, 0, ~1);
347
348	if (r) {
349		DRM_ERROR("VCE not responding, giving up!!!\n");
350		return r;
351	}
352
353	return 0;
354}
355
356int vce_v1_0_init(struct radeon_device *rdev)
357{
358	struct radeon_ring *ring;
359	int r;
360
361	r = vce_v1_0_start(rdev);
362	if (r)
363		return r;
364
365	ring = &rdev->ring[TN_RING_TYPE_VCE1_INDEX];
366	ring->ready = true;
367	r = radeon_ring_test(rdev, TN_RING_TYPE_VCE1_INDEX, ring);
368	if (r) {
369		ring->ready = false;
370		return r;
371	}
372
373	ring = &rdev->ring[TN_RING_TYPE_VCE2_INDEX];
374	ring->ready = true;
375	r = radeon_ring_test(rdev, TN_RING_TYPE_VCE2_INDEX, ring);
376	if (r) {
377		ring->ready = false;
378		return r;
379	}
380
381	DRM_INFO("VCE initialized successfully.\n");
382
383	return 0;
384}
385