tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2016 MediaTek Inc.
4 * Author: PC Chen <pc.chen@mediatek.com>
5 */
6
7#include "mtk_vcodec_drv.h"
8#include "mtk_vcodec_util.h"
9#include "vdec_ipi_msg.h"
10#include "vdec_vpu_if.h"
11#include "mtk_vcodec_fw.h"
12
13static void handle_init_ack_msg(const struct vdec_vpu_ipi_init_ack *msg)
14{
15 struct vdec_vpu_inst *vpu = (struct vdec_vpu_inst *)
16 (unsigned long)msg->ap_inst_addr;
17
18 mtk_vcodec_debug(vpu, "+ ap_inst_addr = 0x%llx", msg->ap_inst_addr);
19
20 /* mapping VPU address to kernel virtual address */
21 /* the content in vsi is initialized to 0 in VPU */
22 vpu->vsi = mtk_vcodec_fw_map_dm_addr(vpu->ctx->dev->fw_handler,
23 msg->vpu_inst_addr);
24 vpu->inst_addr = msg->vpu_inst_addr;
25
26 mtk_vcodec_debug(vpu, "- vpu_inst_addr = 0x%x", vpu->inst_addr);
27}
28
29/*
30 * vpu_dec_ipi_handler - Handler for VPU ipi message.
31 *
32 * @data: ipi message
33 * @len : length of ipi message
34 * @priv: callback private data which is passed by decoder when register.
35 *
36 * This function runs in interrupt context and it means there's an IPI MSG
37 * from VPU.
38 */
39static void vpu_dec_ipi_handler(void *data, unsigned int len, void *priv)
40{
41 const struct vdec_vpu_ipi_ack *msg = data;
42 struct vdec_vpu_inst *vpu = (struct vdec_vpu_inst *)
43 (unsigned long)msg->ap_inst_addr;
44
45 mtk_vcodec_debug(vpu, "+ id=%X", msg->msg_id);
46
47 if (msg->status == 0) {
48 switch (msg->msg_id) {
49 case VPU_IPIMSG_DEC_INIT_ACK:
50 handle_init_ack_msg(data);
51 break;
52
53 case VPU_IPIMSG_DEC_START_ACK:
54 case VPU_IPIMSG_DEC_END_ACK:
55 case VPU_IPIMSG_DEC_DEINIT_ACK:
56 case VPU_IPIMSG_DEC_RESET_ACK:
57 break;
58
59 default:
60 mtk_vcodec_err(vpu, "invalid msg=%X", msg->msg_id);
61 break;
62 }
63 }
64
65 mtk_vcodec_debug(vpu, "- id=%X", msg->msg_id);
66 vpu->failure = msg->status;
67 vpu->signaled = 1;
68}
69
70static int vcodec_vpu_send_msg(struct vdec_vpu_inst *vpu, void *msg, int len)
71{
72 int err;
73
74 mtk_vcodec_debug(vpu, "id=%X", *(uint32_t *)msg);
75
76 vpu->failure = 0;
77 vpu->signaled = 0;
78
79 err = mtk_vcodec_fw_ipi_send(vpu->ctx->dev->fw_handler, vpu->id, msg,
80 len, 2000);
81 if (err) {
82 mtk_vcodec_err(vpu, "send fail vpu_id=%d msg_id=%X status=%d",
83 vpu->id, *(uint32_t *)msg, err);
84 return err;
85 }
86
87 return vpu->failure;
88}
89
90static int vcodec_send_ap_ipi(struct vdec_vpu_inst *vpu, unsigned int msg_id)
91{
92 struct vdec_ap_ipi_cmd msg;
93 int err = 0;
94
95 mtk_vcodec_debug(vpu, "+ id=%X", msg_id);
96
97 memset(&msg, 0, sizeof(msg));
98 msg.msg_id = msg_id;
99 msg.vpu_inst_addr = vpu->inst_addr;
100
101 err = vcodec_vpu_send_msg(vpu, &msg, sizeof(msg));
102 mtk_vcodec_debug(vpu, "- id=%X ret=%d", msg_id, err);
103 return err;
104}
105
106int vpu_dec_init(struct vdec_vpu_inst *vpu)
107{
108 struct vdec_ap_ipi_init msg;
109 int err;
110
111 mtk_vcodec_debug_enter(vpu);
112
113 init_waitqueue_head(&vpu->wq);
114 vpu->handler = vpu_dec_ipi_handler;
115
116 err = mtk_vcodec_fw_ipi_register(vpu->ctx->dev->fw_handler, vpu->id,
117 vpu->handler, "vdec", NULL);
118 if (err != 0) {
119 mtk_vcodec_err(vpu, "vpu_ipi_register fail status=%d", err);
120 return err;
121 }
122
123 memset(&msg, 0, sizeof(msg));
124 msg.msg_id = AP_IPIMSG_DEC_INIT;
125 msg.ap_inst_addr = (unsigned long)vpu;
126
127 mtk_vcodec_debug(vpu, "vdec_inst=%p", vpu);
128
129 err = vcodec_vpu_send_msg(vpu, (void *)&msg, sizeof(msg));
130 mtk_vcodec_debug(vpu, "- ret=%d", err);
131 return err;
132}
133
134int vpu_dec_start(struct vdec_vpu_inst *vpu, uint32_t *data, unsigned int len)
135{
136 struct vdec_ap_ipi_dec_start msg;
137 int i;
138 int err = 0;
139
140 mtk_vcodec_debug_enter(vpu);
141
142 if (len > ARRAY_SIZE(msg.data)) {
143 mtk_vcodec_err(vpu, "invalid len = %d\n", len);
144 return -EINVAL;
145 }
146
147 memset(&msg, 0, sizeof(msg));
148 msg.msg_id = AP_IPIMSG_DEC_START;
149 msg.vpu_inst_addr = vpu->inst_addr;
150
151 for (i = 0; i < len; i++)
152 msg.data[i] = data[i];
153
154 err = vcodec_vpu_send_msg(vpu, (void *)&msg, sizeof(msg));
155 mtk_vcodec_debug(vpu, "- ret=%d", err);
156 return err;
157}
158
159int vpu_dec_end(struct vdec_vpu_inst *vpu)
160{
161 return vcodec_send_ap_ipi(vpu, AP_IPIMSG_DEC_END);
162}
163
164int vpu_dec_deinit(struct vdec_vpu_inst *vpu)
165{
166 return vcodec_send_ap_ipi(vpu, AP_IPIMSG_DEC_DEINIT);
167}
168
169int vpu_dec_reset(struct vdec_vpu_inst *vpu)
170{
171 return vcodec_send_ap_ipi(vpu, AP_IPIMSG_DEC_RESET);
172}