1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2015-2016 MediaTek Inc.
4 * Author: Houlong Wei <houlong.wei@mediatek.com>
5 * Ming Hsiu Tsai <minghsiu.tsai@mediatek.com>
6 */
7
8 #include "mtk_mdp_core.h"
9 #include "mtk_mdp_vpu.h"
10 #include "mtk_vpu.h"
11
12
vpu_to_ctx(struct mtk_mdp_vpu * vpu)13 static inline struct mtk_mdp_ctx *vpu_to_ctx(struct mtk_mdp_vpu *vpu)
14 {
15 return container_of(vpu, struct mtk_mdp_ctx, vpu);
16 }
17
mtk_mdp_vpu_handle_init_ack(const struct mdp_ipi_comm_ack * msg)18 static void mtk_mdp_vpu_handle_init_ack(const struct mdp_ipi_comm_ack *msg)
19 {
20 struct mtk_mdp_vpu *vpu = (struct mtk_mdp_vpu *)
21 (unsigned long)msg->ap_inst;
22
23 /* mapping VPU address to kernel virtual address */
24 vpu->vsi = (struct mdp_process_vsi *)
25 vpu_mapping_dm_addr(vpu->pdev, msg->vpu_inst_addr);
26 vpu->inst_addr = msg->vpu_inst_addr;
27 }
28
mtk_mdp_vpu_ipi_handler(void * data,unsigned int len,void * priv)29 static void mtk_mdp_vpu_ipi_handler(void *data, unsigned int len,
30 void *priv)
31 {
32 const struct mdp_ipi_comm_ack *msg = data;
33 unsigned int msg_id = msg->msg_id;
34 struct mtk_mdp_vpu *vpu = (struct mtk_mdp_vpu *)
35 (unsigned long)msg->ap_inst;
36 struct mtk_mdp_ctx *ctx;
37
38 vpu->failure = msg->status;
39 if (!vpu->failure) {
40 switch (msg_id) {
41 case VPU_MDP_INIT_ACK:
42 mtk_mdp_vpu_handle_init_ack(data);
43 break;
44 case VPU_MDP_DEINIT_ACK:
45 case VPU_MDP_PROCESS_ACK:
46 break;
47 default:
48 ctx = vpu_to_ctx(vpu);
49 dev_err(&ctx->mdp_dev->pdev->dev,
50 "handle unknown ipi msg:0x%x\n",
51 msg_id);
52 break;
53 }
54 } else {
55 ctx = vpu_to_ctx(vpu);
56 mtk_mdp_dbg(0, "[%d]:msg 0x%x, failure:%d", ctx->id,
57 msg_id, vpu->failure);
58 }
59 }
60
mtk_mdp_vpu_register(struct platform_device * pdev)61 int mtk_mdp_vpu_register(struct platform_device *pdev)
62 {
63 struct mtk_mdp_dev *mdp = platform_get_drvdata(pdev);
64 int err;
65
66 err = vpu_ipi_register(mdp->vpu_dev, IPI_MDP,
67 mtk_mdp_vpu_ipi_handler, "mdp_vpu", NULL);
68 if (err)
69 dev_err(&mdp->pdev->dev,
70 "vpu_ipi_registration fail status=%d\n", err);
71
72 return err;
73 }
74
mtk_mdp_vpu_send_msg(void * msg,int len,struct mtk_mdp_vpu * vpu,int id)75 static int mtk_mdp_vpu_send_msg(void *msg, int len, struct mtk_mdp_vpu *vpu,
76 int id)
77 {
78 struct mtk_mdp_ctx *ctx = vpu_to_ctx(vpu);
79 int err;
80
81 if (!vpu->pdev) {
82 mtk_mdp_dbg(1, "[%d]:vpu pdev is NULL", ctx->id);
83 return -EINVAL;
84 }
85
86 mutex_lock(&ctx->mdp_dev->vpulock);
87 err = vpu_ipi_send(vpu->pdev, (enum ipi_id)id, msg, len);
88 if (err)
89 dev_err(&ctx->mdp_dev->pdev->dev,
90 "vpu_ipi_send fail status %d\n", err);
91 mutex_unlock(&ctx->mdp_dev->vpulock);
92
93 return err;
94 }
95
mtk_mdp_vpu_send_ap_ipi(struct mtk_mdp_vpu * vpu,uint32_t msg_id)96 static int mtk_mdp_vpu_send_ap_ipi(struct mtk_mdp_vpu *vpu, uint32_t msg_id)
97 {
98 int err;
99 struct mdp_ipi_comm msg;
100
101 msg.msg_id = msg_id;
102 msg.ipi_id = IPI_MDP;
103 msg.vpu_inst_addr = vpu->inst_addr;
104 msg.ap_inst = (unsigned long)vpu;
105 err = mtk_mdp_vpu_send_msg((void *)&msg, sizeof(msg), vpu, IPI_MDP);
106 if (!err && vpu->failure)
107 err = -EINVAL;
108
109 return err;
110 }
111
mtk_mdp_vpu_init(struct mtk_mdp_vpu * vpu)112 int mtk_mdp_vpu_init(struct mtk_mdp_vpu *vpu)
113 {
114 int err;
115 struct mdp_ipi_init msg;
116 struct mtk_mdp_ctx *ctx = vpu_to_ctx(vpu);
117
118 vpu->pdev = ctx->mdp_dev->vpu_dev;
119
120 msg.msg_id = AP_MDP_INIT;
121 msg.ipi_id = IPI_MDP;
122 msg.ap_inst = (unsigned long)vpu;
123 err = mtk_mdp_vpu_send_msg((void *)&msg, sizeof(msg), vpu, IPI_MDP);
124 if (!err && vpu->failure)
125 err = -EINVAL;
126
127 return err;
128 }
129
mtk_mdp_vpu_deinit(struct mtk_mdp_vpu * vpu)130 int mtk_mdp_vpu_deinit(struct mtk_mdp_vpu *vpu)
131 {
132 return mtk_mdp_vpu_send_ap_ipi(vpu, AP_MDP_DEINIT);
133 }
134
mtk_mdp_vpu_process(struct mtk_mdp_vpu * vpu)135 int mtk_mdp_vpu_process(struct mtk_mdp_vpu *vpu)
136 {
137 return mtk_mdp_vpu_send_ap_ipi(vpu, AP_MDP_PROCESS);
138 }
139