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/*
* Copyright (c) 2016 MediaTek Inc.
* Author: PC Chen <pc.chen@mediatek.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "mtk_vcodec_drv.h"
#include "mtk_vcodec_util.h"
#include "vdec_ipi_msg.h"
#include "vdec_vpu_if.h"
static void handle_init_ack_msg(struct vdec_vpu_ipi_init_ack *msg)
{
struct vdec_vpu_inst *vpu = (struct vdec_vpu_inst *)
(unsigned long)msg->ap_inst_addr;
mtk_vcodec_debug(vpu, "+ ap_inst_addr = 0x%llx", msg->ap_inst_addr);
/* mapping VPU address to kernel virtual address */
/* the content in vsi is initialized to 0 in VPU */
vpu->vsi = vpu_mapping_dm_addr(vpu->dev, msg->vpu_inst_addr);
vpu->inst_addr = msg->vpu_inst_addr;
mtk_vcodec_debug(vpu, "- vpu_inst_addr = 0x%x", vpu->inst_addr);
}
/*
* This function runs in interrupt context and it means there's an IPI MSG
* from VPU.
*/
void vpu_dec_ipi_handler(void *data, unsigned int len, void *priv)
{
struct vdec_vpu_ipi_ack *msg = data;
struct vdec_vpu_inst *vpu = (struct vdec_vpu_inst *)
(unsigned long)msg->ap_inst_addr;
mtk_vcodec_debug(vpu, "+ id=%X", msg->msg_id);
if (msg->status == 0) {
switch (msg->msg_id) {
case VPU_IPIMSG_DEC_INIT_ACK:
handle_init_ack_msg(data);
break;
case VPU_IPIMSG_DEC_START_ACK:
case VPU_IPIMSG_DEC_END_ACK:
case VPU_IPIMSG_DEC_DEINIT_ACK:
case VPU_IPIMSG_DEC_RESET_ACK:
break;
default:
mtk_vcodec_err(vpu, "invalid msg=%X", msg->msg_id);
break;
}
}
mtk_vcodec_debug(vpu, "- id=%X", msg->msg_id);
vpu->failure = msg->status;
vpu->signaled = 1;
}
static int vcodec_vpu_send_msg(struct vdec_vpu_inst *vpu, void *msg, int len)
{
int err;
mtk_vcodec_debug(vpu, "id=%X", *(uint32_t *)msg);
vpu->failure = 0;
vpu->signaled = 0;
err = vpu_ipi_send(vpu->dev, vpu->id, msg, len);
if (err) {
mtk_vcodec_err(vpu, "send fail vpu_id=%d msg_id=%X status=%d",
vpu->id, *(uint32_t *)msg, err);
return err;
}
return vpu->failure;
}
static int vcodec_send_ap_ipi(struct vdec_vpu_inst *vpu, unsigned int msg_id)
{
struct vdec_ap_ipi_cmd msg;
int err = 0;
mtk_vcodec_debug(vpu, "+ id=%X", msg_id);
memset(&msg, 0, sizeof(msg));
msg.msg_id = msg_id;
msg.vpu_inst_addr = vpu->inst_addr;
err = vcodec_vpu_send_msg(vpu, &msg, sizeof(msg));
mtk_vcodec_debug(vpu, "- id=%X ret=%d", msg_id, err);
return err;
}
int vpu_dec_init(struct vdec_vpu_inst *vpu)
{
struct vdec_ap_ipi_init msg;
int err;
mtk_vcodec_debug_enter(vpu);
init_waitqueue_head(&vpu->wq);
err = vpu_ipi_register(vpu->dev, vpu->id, vpu->handler, "vdec", NULL);
if (err != 0) {
mtk_vcodec_err(vpu, "vpu_ipi_register fail status=%d", err);
return err;
}
memset(&msg, 0, sizeof(msg));
msg.msg_id = AP_IPIMSG_DEC_INIT;
msg.ap_inst_addr = (unsigned long)vpu;
mtk_vcodec_debug(vpu, "vdec_inst=%p", vpu);
err = vcodec_vpu_send_msg(vpu, (void *)&msg, sizeof(msg));
mtk_vcodec_debug(vpu, "- ret=%d", err);
return err;
}
int vpu_dec_start(struct vdec_vpu_inst *vpu, uint32_t *data, unsigned int len)
{
struct vdec_ap_ipi_dec_start msg;
int i;
int err = 0;
mtk_vcodec_debug_enter(vpu);
if (len > ARRAY_SIZE(msg.data)) {
mtk_vcodec_err(vpu, "invalid len = %d\n", len);
return -EINVAL;
}
memset(&msg, 0, sizeof(msg));
msg.msg_id = AP_IPIMSG_DEC_START;
msg.vpu_inst_addr = vpu->inst_addr;
for (i = 0; i < len; i++)
msg.data[i] = data[i];
err = vcodec_vpu_send_msg(vpu, (void *)&msg, sizeof(msg));
mtk_vcodec_debug(vpu, "- ret=%d", err);
return err;
}
int vpu_dec_end(struct vdec_vpu_inst *vpu)
{
return vcodec_send_ap_ipi(vpu, AP_IPIMSG_DEC_END);
}
int vpu_dec_deinit(struct vdec_vpu_inst *vpu)
{
return vcodec_send_ap_ipi(vpu, AP_IPIMSG_DEC_DEINIT);
}
int vpu_dec_reset(struct vdec_vpu_inst *vpu)
{
return vcodec_send_ap_ipi(vpu, AP_IPIMSG_DEC_RESET);
}
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