1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright 2020-2021 NXP
4 */
5
6#include <linux/init.h>
7#include <linux/device.h>
8#include <linux/ioctl.h>
9#include <linux/list.h>
10#include <linux/module.h>
11#include <linux/kernel.h>
12#include <linux/slab.h>
13#include <linux/delay.h>
14#include <linux/types.h>
15#include "vpu.h"
16#include "vpu_core.h"
17#include "vpu_imx8q.h"
18#include "vpu_rpc.h"
19
20#define IMX8Q_CSR_CM0Px_ADDR_OFFSET 0x00000000
21#define IMX8Q_CSR_CM0Px_CPUWAIT 0x00000004
22
23#ifdef CONFIG_IMX_SCU
24#include <linux/firmware/imx/ipc.h>
25#include <linux/firmware/imx/svc/misc.h>
26
27#define VPU_DISABLE_BITS 0x7
28#define VPU_IMX_DECODER_FUSE_OFFSET 14
29#define VPU_ENCODER_MASK 0x1
30#define VPU_DECODER_MASK 0x3UL
31#define VPU_DECODER_H264_MASK 0x2UL
32#define VPU_DECODER_HEVC_MASK 0x1UL
33
34static u32 imx8q_fuse;
35
36struct vpu_sc_msg_misc {
37 struct imx_sc_rpc_msg hdr;
38 u32 word;
39} __packed;
40#endif
41
42int vpu_imx8q_setup_dec(struct vpu_dev *vpu)
43{
44 const off_t offset = DEC_MFD_XREG_SLV_BASE + MFD_BLK_CTRL;
45
46 vpu_writel(vpu, reg: offset + MFD_BLK_CTRL_MFD_SYS_CLOCK_ENABLE_SET, val: 0x1f);
47 vpu_writel(vpu, reg: offset + MFD_BLK_CTRL_MFD_SYS_RESET_SET, val: 0xffffffff);
48
49 return 0;
50}
51
52int vpu_imx8q_setup_enc(struct vpu_dev *vpu)
53{
54 return 0;
55}
56
57int vpu_imx8q_setup(struct vpu_dev *vpu)
58{
59 const off_t offset = SCB_XREG_SLV_BASE + SCB_SCB_BLK_CTRL;
60
61 vpu_readl(vpu, reg: offset + 0x108);
62
63 vpu_writel(vpu, reg: offset + SCB_BLK_CTRL_SCB_CLK_ENABLE_SET, val: 0x1);
64 vpu_writel(vpu, reg: offset + 0x190, val: 0xffffffff);
65 vpu_writel(vpu, reg: offset + SCB_BLK_CTRL_XMEM_RESET_SET, val: 0xffffffff);
66 vpu_writel(vpu, reg: offset + SCB_BLK_CTRL_SCB_CLK_ENABLE_SET, val: 0xE);
67 vpu_writel(vpu, reg: offset + SCB_BLK_CTRL_CACHE_RESET_SET, val: 0x7);
68 vpu_writel(vpu, XMEM_CONTROL, val: 0x102);
69
70 vpu_readl(vpu, reg: offset + 0x108);
71
72 return 0;
73}
74
75static int vpu_imx8q_reset_enc(struct vpu_dev *vpu)
76{
77 return 0;
78}
79
80static int vpu_imx8q_reset_dec(struct vpu_dev *vpu)
81{
82 const off_t offset = DEC_MFD_XREG_SLV_BASE + MFD_BLK_CTRL;
83
84 vpu_writel(vpu, reg: offset + MFD_BLK_CTRL_MFD_SYS_RESET_CLR, val: 0xffffffff);
85
86 return 0;
87}
88
89int vpu_imx8q_reset(struct vpu_dev *vpu)
90{
91 const off_t offset = SCB_XREG_SLV_BASE + SCB_SCB_BLK_CTRL;
92
93 vpu_writel(vpu, reg: offset + SCB_BLK_CTRL_CACHE_RESET_CLR, val: 0x7);
94 vpu_imx8q_reset_enc(vpu);
95 vpu_imx8q_reset_dec(vpu);
96
97 return 0;
98}
99
100int vpu_imx8q_set_system_cfg_common(struct vpu_rpc_system_config *config, u32 regs, u32 core_id)
101{
102 if (!config)
103 return -EINVAL;
104
105 switch (core_id) {
106 case 0:
107 config->malone_base_addr[0] = regs + DEC_MFD_XREG_SLV_BASE;
108 config->num_malones = 1;
109 config->num_windsors = 0;
110 break;
111 case 1:
112 config->windsor_base_addr[0] = regs + ENC_MFD_XREG_SLV_0_BASE;
113 config->num_windsors = 1;
114 config->num_malones = 0;
115 break;
116 case 2:
117 config->windsor_base_addr[0] = regs + ENC_MFD_XREG_SLV_1_BASE;
118 config->num_windsors = 1;
119 config->num_malones = 0;
120 break;
121 default:
122 return -EINVAL;
123 }
124 if (config->num_windsors) {
125 config->windsor_irq_pin[0x0][0x0] = WINDSOR_PAL_IRQ_PIN_L;
126 config->windsor_irq_pin[0x0][0x1] = WINDSOR_PAL_IRQ_PIN_H;
127 }
128
129 config->malone_base_addr[0x1] = 0x0;
130 config->hif_offset[0x0] = MFD_HIF;
131 config->hif_offset[0x1] = 0x0;
132
133 config->dpv_base_addr = 0x0;
134 config->dpv_irq_pin = 0x0;
135 config->pixif_base_addr = regs + DEC_MFD_XREG_SLV_BASE + MFD_PIX_IF;
136 config->cache_base_addr[0] = regs + MC_CACHE_0_BASE;
137 config->cache_base_addr[1] = regs + MC_CACHE_1_BASE;
138
139 return 0;
140}
141
142int vpu_imx8q_boot_core(struct vpu_core *core)
143{
144 csr_writel(core, IMX8Q_CSR_CM0Px_ADDR_OFFSET, val: core->fw.phys);
145 csr_writel(core, IMX8Q_CSR_CM0Px_CPUWAIT, val: 0);
146 return 0;
147}
148
149int vpu_imx8q_get_power_state(struct vpu_core *core)
150{
151 if (csr_readl(core, IMX8Q_CSR_CM0Px_CPUWAIT) == 1)
152 return 0;
153 return 1;
154}
155
156int vpu_imx8q_on_firmware_loaded(struct vpu_core *core)
157{
158 u8 *p;
159
160 p = core->fw.virt;
161 p[16] = core->vpu->res->plat_type;
162 p[17] = core->id;
163 p[18] = 1;
164
165 return 0;
166}
167
168int vpu_imx8q_check_memory_region(dma_addr_t base, dma_addr_t addr, u32 size)
169{
170 const struct vpu_rpc_region_t imx8q_regions[] = {
171 {0x00000000, 0x08000000, VPU_CORE_MEMORY_CACHED},
172 {0x08000000, 0x10000000, VPU_CORE_MEMORY_UNCACHED},
173 {0x10000000, 0x20000000, VPU_CORE_MEMORY_CACHED},
174 {0x20000000, 0x40000000, VPU_CORE_MEMORY_UNCACHED}
175 };
176 int i;
177
178 if (addr < base)
179 return VPU_CORE_MEMORY_INVALID;
180
181 addr -= base;
182 for (i = 0; i < ARRAY_SIZE(imx8q_regions); i++) {
183 const struct vpu_rpc_region_t *region = &imx8q_regions[i];
184
185 if (addr >= region->start && addr + size < region->end)
186 return region->type;
187 }
188
189 return VPU_CORE_MEMORY_INVALID;
190}
191
192#ifdef CONFIG_IMX_SCU
193static u32 vpu_imx8q_get_fuse(void)
194{
195 static u32 fuse_got;
196 struct imx_sc_ipc *ipc;
197 struct vpu_sc_msg_misc msg;
198 struct imx_sc_rpc_msg *hdr = &msg.hdr;
199 int ret;
200
201 if (fuse_got)
202 return imx8q_fuse;
203
204 ret = imx_scu_get_handle(ipc: &ipc);
205 if (ret) {
206 pr_err("error: get sct handle fail: %d\n", ret);
207 return 0;
208 }
209
210 hdr->ver = IMX_SC_RPC_VERSION;
211 hdr->svc = IMX_SC_RPC_SVC_MISC;
212 hdr->func = IMX_SC_MISC_FUNC_OTP_FUSE_READ;
213 hdr->size = 2;
214
215 msg.word = VPU_DISABLE_BITS;
216
217 ret = imx_scu_call_rpc(ipc, msg: &msg, have_resp: true);
218 if (ret)
219 return 0;
220
221 imx8q_fuse = msg.word;
222 fuse_got = 1;
223 return imx8q_fuse;
224}
225
226bool vpu_imx8q_check_codec(enum vpu_core_type type)
227{
228 u32 fuse = vpu_imx8q_get_fuse();
229
230 if (type == VPU_CORE_TYPE_ENC) {
231 if (fuse & VPU_ENCODER_MASK)
232 return false;
233 } else if (type == VPU_CORE_TYPE_DEC) {
234 fuse >>= VPU_IMX_DECODER_FUSE_OFFSET;
235 fuse &= VPU_DECODER_MASK;
236
237 if (fuse == VPU_DECODER_MASK)
238 return false;
239 }
240 return true;
241}
242
243bool vpu_imx8q_check_fmt(enum vpu_core_type type, u32 pixelfmt)
244{
245 u32 fuse = vpu_imx8q_get_fuse();
246
247 if (type == VPU_CORE_TYPE_DEC) {
248 fuse >>= VPU_IMX_DECODER_FUSE_OFFSET;
249 fuse &= VPU_DECODER_MASK;
250
251 if (fuse == VPU_DECODER_HEVC_MASK && pixelfmt == V4L2_PIX_FMT_HEVC)
252 return false;
253 if (fuse == VPU_DECODER_H264_MASK && pixelfmt == V4L2_PIX_FMT_H264)
254 return false;
255 if (fuse == VPU_DECODER_MASK)
256 return false;
257 }
258
259 return true;
260}
261#else
262bool vpu_imx8q_check_codec(enum vpu_core_type type)
263{
264 return true;
265}
266
267bool vpu_imx8q_check_fmt(enum vpu_core_type type, u32 pixelfmt)
268{
269 return true;
270}
271#endif
272

source code of linux/drivers/media/platform/amphion/vpu_imx8q.c