1/*
2 * Copyright 2016 Advanced Micro Devices, Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * Author: Huang Rui
23 *
24 */
25
26#include <linux/firmware.h>
27#include <linux/module.h>
28#include <linux/pci.h>
29
30#include "amdgpu.h"
31#include "amdgpu_psp.h"
32#include "amdgpu_ucode.h"
33#include "soc15_common.h"
34#include "psp_v10_0.h"
35
36#include "mp/mp_10_0_offset.h"
37#include "gc/gc_9_1_offset.h"
38#include "sdma0/sdma0_4_1_offset.h"
39
40MODULE_FIRMWARE("amdgpu/raven_asd.bin");
41MODULE_FIRMWARE("amdgpu/picasso_asd.bin");
42MODULE_FIRMWARE("amdgpu/raven2_asd.bin");
43MODULE_FIRMWARE("amdgpu/picasso_ta.bin");
44MODULE_FIRMWARE("amdgpu/raven2_ta.bin");
45MODULE_FIRMWARE("amdgpu/raven_ta.bin");
46
47static int psp_v10_0_init_microcode(struct psp_context *psp)
48{
49	struct amdgpu_device *adev = psp->adev;
50	char ucode_prefix[30];
51	int err = 0;
52	DRM_DEBUG("\n");
53
54	amdgpu_ucode_ip_version_decode(adev, MP0_HWIP, ucode_prefix, sizeof(ucode_prefix));
55
56	err = psp_init_asd_microcode(psp, ucode_prefix);
57	if (err)
58		return err;
59
60	err = psp_init_ta_microcode(psp, ucode_prefix);
61	if ((amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 1, 0)) &&
62	    (adev->pdev->revision == 0xa1) &&
63	    (psp->securedisplay_context.context.bin_desc.fw_version >=
64	     0x27000008)) {
65		adev->psp.securedisplay_context.context.bin_desc.size_bytes = 0;
66	}
67	return err;
68}
69
70static int psp_v10_0_ring_create(struct psp_context *psp,
71				 enum psp_ring_type ring_type)
72{
73	int ret = 0;
74	unsigned int psp_ring_reg = 0;
75	struct psp_ring *ring = &psp->km_ring;
76	struct amdgpu_device *adev = psp->adev;
77
78	/* Write low address of the ring to C2PMSG_69 */
79	psp_ring_reg = lower_32_bits(ring->ring_mem_mc_addr);
80	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_69, psp_ring_reg);
81	/* Write high address of the ring to C2PMSG_70 */
82	psp_ring_reg = upper_32_bits(ring->ring_mem_mc_addr);
83	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_70, psp_ring_reg);
84	/* Write size of ring to C2PMSG_71 */
85	psp_ring_reg = ring->ring_size;
86	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_71, psp_ring_reg);
87	/* Write the ring initialization command to C2PMSG_64 */
88	psp_ring_reg = ring_type;
89	psp_ring_reg = psp_ring_reg << 16;
90	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_64, psp_ring_reg);
91
92	/* There might be handshake issue with hardware which needs delay */
93	mdelay(20);
94
95	/* Wait for response flag (bit 31) in C2PMSG_64 */
96	ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_64),
97			   0x80000000, 0x8000FFFF, false);
98
99	return ret;
100}
101
102static int psp_v10_0_ring_stop(struct psp_context *psp,
103			       enum psp_ring_type ring_type)
104{
105	int ret = 0;
106	unsigned int psp_ring_reg = 0;
107	struct amdgpu_device *adev = psp->adev;
108
109	/* Write the ring destroy command to C2PMSG_64 */
110	psp_ring_reg = 3 << 16;
111	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_64, psp_ring_reg);
112
113	/* There might be handshake issue with hardware which needs delay */
114	mdelay(20);
115
116	/* Wait for response flag (bit 31) in C2PMSG_64 */
117	ret = psp_wait_for(psp, SOC15_REG_OFFSET(MP0, 0, mmMP0_SMN_C2PMSG_64),
118			   0x80000000, 0x80000000, false);
119
120	return ret;
121}
122
123static int psp_v10_0_ring_destroy(struct psp_context *psp,
124				  enum psp_ring_type ring_type)
125{
126	int ret = 0;
127	struct psp_ring *ring = &psp->km_ring;
128	struct amdgpu_device *adev = psp->adev;
129
130	ret = psp_v10_0_ring_stop(psp, ring_type);
131	if (ret)
132		DRM_ERROR("Fail to stop psp ring\n");
133
134	amdgpu_bo_free_kernel(&adev->firmware.rbuf,
135			      &ring->ring_mem_mc_addr,
136			      (void **)&ring->ring_mem);
137
138	return ret;
139}
140
141static int psp_v10_0_mode1_reset(struct psp_context *psp)
142{
143	DRM_INFO("psp mode 1 reset not supported now! \n");
144	return -EINVAL;
145}
146
147static uint32_t psp_v10_0_ring_get_wptr(struct psp_context *psp)
148{
149	struct amdgpu_device *adev = psp->adev;
150
151	return RREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_67);
152}
153
154static void psp_v10_0_ring_set_wptr(struct psp_context *psp, uint32_t value)
155{
156	struct amdgpu_device *adev = psp->adev;
157
158	WREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_67, value);
159}
160
161static const struct psp_funcs psp_v10_0_funcs = {
162	.init_microcode = psp_v10_0_init_microcode,
163	.ring_create = psp_v10_0_ring_create,
164	.ring_stop = psp_v10_0_ring_stop,
165	.ring_destroy = psp_v10_0_ring_destroy,
166	.mode1_reset = psp_v10_0_mode1_reset,
167	.ring_get_wptr = psp_v10_0_ring_get_wptr,
168	.ring_set_wptr = psp_v10_0_ring_set_wptr,
169};
170
171void psp_v10_0_set_psp_funcs(struct psp_context *psp)
172{
173	psp->funcs = &psp_v10_0_funcs;
174}
175