[PATCH v15.1 05/13] media: amphion: implement vpu core communication based on mailbox

Ming Qian
2022-01-26T03:10:39Z

driver use mailbox to communicate with vpu core.
and there are a command buffer and a message buffer.
driver will write commands to the command buffer,
then trigger a vpu core interrupt
vpu core will write messages to the message buffer,
then trigger a cpu interrupt.

Signed-off-by: Ming Qian <ming.qian@nxp.com>
Signed-off-by: Shijie Qin <shijie.qin@nxp.com>
Signed-off-by: Zhou Peng <eagle.zhou@nxp.com>
Reported-by: kernel test robot <lkp@intel.com>
Tested-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
---
drivers/media/platform/amphion/vpu_cmds.c | 436 ++++++++++++++++++++++
drivers/media/platform/amphion/vpu_cmds.h | 25 ++
drivers/media/platform/amphion/vpu_mbox.c | 118 ++++++
drivers/media/platform/amphion/vpu_mbox.h | 16 +
drivers/media/platform/amphion/vpu_msgs.c | 385 +++++++++++++++++++
drivers/media/platform/amphion/vpu_msgs.h | 14 +
6 files changed, 994 insertions(+)
create mode 100644 drivers/media/platform/amphion/vpu_cmds.c
create mode 100644 drivers/media/platform/amphion/vpu_cmds.h
create mode 100644 drivers/media/platform/amphion/vpu_mbox.c
create mode 100644 drivers/media/platform/amphion/vpu_mbox.h
create mode 100644 drivers/media/platform/amphion/vpu_msgs.c
create mode 100644 drivers/media/platform/amphion/vpu_msgs.h

diff --git a/drivers/media/platform/amphion/vpu_cmds.c b/drivers/media/platform/amphion/vpu_cmds.c
new file mode 100644
index 000000000000..51e404ebda8f
--- /dev/null
+++ b/drivers/media/platform/amphion/vpu_cmds.c
@@ -0,0 +1,436 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2020-2021 NXP
+ */
+
+#include <linux/init.h>
+#include <linux/interconnect.h>
+#include <linux/ioctl.h>
+#include <linux/list.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/vmalloc.h>
+#include "vpu.h"
+#include "vpu_defs.h"
+#include "vpu_cmds.h"
+#include "vpu_rpc.h"
+#include "vpu_mbox.h"
+
+struct vpu_cmd_request {
+ u32 request;
+ u32 response;
+ u32 handled;
+};
+
+struct vpu_cmd_t {
+ struct list_head list;
+ u32 id;
+ struct vpu_cmd_request *request;
+ struct vpu_rpc_event *pkt;
+ unsigned long key;
+};
+
+static struct vpu_cmd_request vpu_cmd_requests[] = {
+ {
+ .request = VPU_CMD_ID_CONFIGURE_CODEC,
+ .response = VPU_MSG_ID_MEM_REQUEST,
+ .handled = 1,
+ },
+ {
+ .request = VPU_CMD_ID_START,
+ .response = VPU_MSG_ID_START_DONE,
+ .handled = 0,
+ },
+ {
+ .request = VPU_CMD_ID_STOP,
+ .response = VPU_MSG_ID_STOP_DONE,
+ .handled = 0,
+ },
+ {
+ .request = VPU_CMD_ID_ABORT,
+ .response = VPU_MSG_ID_ABORT_DONE,
+ .handled = 0,
+ },
+ {
+ .request = VPU_CMD_ID_RST_BUF,
+ .response = VPU_MSG_ID_BUF_RST,
+ .handled = 1,
+ },
+};
+
+static int vpu_cmd_send(struct vpu_core *core, struct vpu_rpc_event *pkt)
+{
+ int ret = 0;
+
+ ret = vpu_iface_send_cmd(core, pkt);
+ if (ret)
+ return ret;
+
+ /*write cmd data to cmd buffer before trigger a cmd interrupt*/
+ mb();
+ vpu_mbox_send_type(core, COMMAND);
+
+ return ret;
+}
+
+static struct vpu_cmd_t *vpu_alloc_cmd(struct vpu_inst *inst, u32 id, void *data)
+{
+ struct vpu_cmd_t *cmd;
+ int i;
+ int ret;
+
+ cmd = vzalloc(sizeof(*cmd));
+ if (!cmd)
+ return NULL;
+
+ cmd->pkt = vzalloc(sizeof(*cmd->pkt));
+ if (!cmd->pkt) {
+ vfree(cmd);
+ return NULL;
+ }
+
+ cmd->id = id;
+ ret = vpu_iface_pack_cmd(inst->core, cmd->pkt, inst->id, id, data);
+ if (ret) {
+ dev_err(inst->dev, "iface pack cmd(%d) fail\n", id);
+ vfree(cmd->pkt);
+ vfree(cmd);
+ return NULL;
+ }
+ for (i = 0; i < ARRAY_SIZE(vpu_cmd_requests); i++) {
+ if (vpu_cmd_requests[i].request == id) {
+ cmd->request = &vpu_cmd_requests[i];
+ break;
+ }
+ }
+
+ return cmd;
+}
+
+static void vpu_free_cmd(struct vpu_cmd_t *cmd)
+{
+ if (!cmd)
+ return;
+ if (cmd->pkt)
+ vfree(cmd->pkt);
+ vfree(cmd);
+}
+
+static int vpu_session_process_cmd(struct vpu_inst *inst, struct vpu_cmd_t *cmd)
+{
+ int ret;
+
+ if (!inst || !cmd || !cmd->pkt)
+ return -EINVAL;
+
+ dev_dbg(inst->dev, "[%d]send cmd(0x%x)\n", inst->id, cmd->id);
+ vpu_iface_pre_send_cmd(inst);
+ ret = vpu_cmd_send(inst->core, cmd->pkt);
+ if (!ret) {
+ vpu_iface_post_send_cmd(inst);
+ vpu_inst_record_flow(inst, cmd->id);
+ } else {
+ dev_err(inst->dev, "[%d] iface send cmd(0x%x) fail\n", inst->id, cmd->id);
+ }
+
+ return ret;
+}
+
+static void vpu_process_cmd_request(struct vpu_inst *inst)
+{
+ struct vpu_cmd_t *cmd;
+ struct vpu_cmd_t *tmp;
+
+ if (!inst || inst->pending)
+ return;
+
+ list_for_each_entry_safe(cmd, tmp, &inst->cmd_q, list) {
+ list_del_init(&cmd->list);
+ if (vpu_session_process_cmd(inst, cmd))
+ dev_err(inst->dev, "[%d] process cmd(%d) fail\n", inst->id, cmd->id);
+ if (cmd->request) {
+ inst->pending = (void *)cmd;
+ break;
+ }
+ vpu_free_cmd(cmd);
+ }
+}
+
+static int vpu_request_cmd(struct vpu_inst *inst, u32 id, void *data,
+ unsigned long *key, int *sync)
+{
+ struct vpu_core *core;
+ struct vpu_cmd_t *cmd;
+
+ if (!inst || !inst->core)
+ return -EINVAL;
+
+ core = inst->core;
+ cmd = vpu_alloc_cmd(inst, id, data);
+ if (!cmd)
+ return -ENOMEM;
+
+ mutex_lock(&core->cmd_lock);
+ cmd->key = core->cmd_seq++;
+ if (key)
+ *key = cmd->key;
+ if (sync)
+ *sync = cmd->request ? true : false;
+ list_add_tail(&cmd->list, &inst->cmd_q);
+ vpu_process_cmd_request(inst);
+ mutex_unlock(&core->cmd_lock);
+
+ return 0;
+}
+
+static void vpu_clear_pending(struct vpu_inst *inst)
+{
+ if (!inst || !inst->pending)
+ return;
+
+ vpu_free_cmd(inst->pending);
+ wake_up_all(&inst->core->ack_wq);
+ inst->pending = NULL;
+}
+
+static bool vpu_check_response(struct vpu_cmd_t *cmd, u32 response, u32 handled)
+{
+ struct vpu_cmd_request *request;
+
+ if (!cmd || !cmd->request)
+ return false;
+
+ request = cmd->request;
+ if (request->response != response)
+ return false;
+ if (request->handled != handled)
+ return false;
+
+ return true;
+}
+
+int vpu_response_cmd(struct vpu_inst *inst, u32 response, u32 handled)
+{
+ struct vpu_core *core;
+
+ if (!inst || !inst->core)
+ return -EINVAL;
+
+ core = inst->core;
+ mutex_lock(&core->cmd_lock);
+ if (vpu_check_response(inst->pending, response, handled))
+ vpu_clear_pending(inst);
+
+ vpu_process_cmd_request(inst);
+ mutex_unlock(&core->cmd_lock);
+
+ return 0;
+}
+
+void vpu_clear_request(struct vpu_inst *inst)
+{
+ struct vpu_cmd_t *cmd;
+ struct vpu_cmd_t *tmp;
+
+ mutex_lock(&inst->core->cmd_lock);
+ if (inst->pending)
+ vpu_clear_pending(inst);
+
+ list_for_each_entry_safe(cmd, tmp, &inst->cmd_q, list) {
+ list_del_init(&cmd->list);
+ vpu_free_cmd(cmd);
+ }
+ mutex_unlock(&inst->core->cmd_lock);
+}
+
+static bool check_is_responsed(struct vpu_inst *inst, unsigned long key)
+{
+ struct vpu_core *core = inst->core;
+ struct vpu_cmd_t *cmd;
+ bool flag = true;
+
+ mutex_lock(&core->cmd_lock);
+ cmd = inst->pending;
+ if (cmd && key == cmd->key) {
+ flag = false;
+ goto exit;
+ }
+ list_for_each_entry(cmd, &inst->cmd_q, list) {
+ if (key == cmd->key) {
+ flag = false;
+ break;
+ }
+ }
+exit:
+ mutex_unlock(&core->cmd_lock);
+
+ return flag;
+}
+
+static int sync_session_response(struct vpu_inst *inst, unsigned long key)
+{
+ struct vpu_core *core;
+
+ if (!inst || !inst->core)
+ return -EINVAL;
+
+ core = inst->core;
+
+ call_vop(inst, wait_prepare);
+ wait_event_timeout(core->ack_wq, check_is_responsed(inst, key), VPU_TIMEOUT);
+ call_vop(inst, wait_finish);
+
+ if (!check_is_responsed(inst, key)) {
+ dev_err(inst->dev, "[%d] sync session timeout\n", inst->id);
+ set_bit(inst->id, &core->hang_mask);
+ mutex_lock(&inst->core->cmd_lock);
+ vpu_clear_pending(inst);
+ mutex_unlock(&inst->core->cmd_lock);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int vpu_session_send_cmd(struct vpu_inst *inst, u32 id, void *data)
+{
+ unsigned long key;
+ int sync = false;
+ int ret = -EINVAL;
+
+ if (inst->id < 0)
+ return -EINVAL;
+
+ ret = vpu_request_cmd(inst, id, data, &key, &sync);
+ if (!ret && sync)
+ ret = sync_session_response(inst, key);
+
+ if (ret)
+ dev_err(inst->dev, "[%d] send cmd(0x%x) fail\n", inst->id, id);
+
+ return ret;
+}
+
+int vpu_session_configure_codec(struct vpu_inst *inst)
+{
+ return vpu_session_send_cmd(inst, VPU_CMD_ID_CONFIGURE_CODEC, NULL);
+}
+
+int vpu_session_start(struct vpu_inst *inst)
+{
+ vpu_trace(inst->dev, "[%d]\n", inst->id);
+
+ return vpu_session_send_cmd(inst, VPU_CMD_ID_START, NULL);
+}
+
+int vpu_session_stop(struct vpu_inst *inst)
+{
+ int ret;
+
+ vpu_trace(inst->dev, "[%d]\n", inst->id);
+
+ ret = vpu_session_send_cmd(inst, VPU_CMD_ID_STOP, NULL);
+ /* workaround for a firmware bug,
+ * if the next command is too close after stop cmd,
+ * the firmware may enter wfi wrongly.
+ */
+ usleep_range(3000, 5000);
+ return ret;
+}
+
+int vpu_session_encode_frame(struct vpu_inst *inst, s64 timestamp)
+{
+ return vpu_session_send_cmd(inst, VPU_CMD_ID_FRAME_ENCODE, &timestamp);
+}
+
+int vpu_session_alloc_fs(struct vpu_inst *inst, struct vpu_fs_info *fs)
+{
+ return vpu_session_send_cmd(inst, VPU_CMD_ID_FS_ALLOC, fs);
+}
+
+int vpu_session_release_fs(struct vpu_inst *inst, struct vpu_fs_info *fs)
+{
+ return vpu_session_send_cmd(inst, VPU_CMD_ID_FS_RELEASE, fs);
+}
+
+int vpu_session_abort(struct vpu_inst *inst)
+{
+ return vpu_session_send_cmd(inst, VPU_CMD_ID_ABORT, NULL);
+}
+
+int vpu_session_rst_buf(struct vpu_inst *inst)
+{
+ return vpu_session_send_cmd(inst, VPU_CMD_ID_RST_BUF, NULL);
+}
+
+int vpu_session_fill_timestamp(struct vpu_inst *inst, struct vpu_ts_info *info)
+{
+ return vpu_session_send_cmd(inst, VPU_CMD_ID_TIMESTAMP, info);
+}
+
+int vpu_session_update_parameters(struct vpu_inst *inst, void *arg)
+{
+ if (inst->type & VPU_CORE_TYPE_DEC)
+ vpu_iface_set_decode_params(inst, arg, 1);
+ else
+ vpu_iface_set_encode_params(inst, arg, 1);
+
+ return vpu_session_send_cmd(inst, VPU_CMD_ID_UPDATE_PARAMETER, arg);
+}
+
+int vpu_session_debug(struct vpu_inst *inst)
+{
+ return vpu_session_send_cmd(inst, VPU_CMD_ID_DEBUG, NULL);
+}
+
+int vpu_core_snapshot(struct vpu_core *core)
+{
+ struct vpu_inst *inst;
+ int ret;
+
+ if (!core || list_empty(&core->instances))
+ return 0;
+
+ inst = list_first_entry(&core->instances, struct vpu_inst, list);
+
+ reinit_completion(&core->cmp);
+ ret = vpu_session_send_cmd(inst, VPU_CMD_ID_SNAPSHOT, NULL);
+ if (ret)
+ return ret;
+ ret = wait_for_completion_timeout(&core->cmp, VPU_TIMEOUT);
+ if (!ret) {
+ dev_err(core->dev, "snapshot timeout\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+int vpu_core_sw_reset(struct vpu_core *core)
+{
+ struct vpu_rpc_event pkt;
+ int ret;
+
+ memset(&pkt, 0, sizeof(pkt));
+ vpu_iface_pack_cmd(core, &pkt, 0, VPU_CMD_ID_FIRM_RESET, NULL);
+
+ reinit_completion(&core->cmp);
+ mutex_lock(&core->cmd_lock);
+ ret = vpu_cmd_send(core, &pkt);
+ mutex_unlock(&core->cmd_lock);
+ if (ret)
+ return ret;
+ ret = wait_for_completion_timeout(&core->cmp, VPU_TIMEOUT);
+ if (!ret) {
+ dev_err(core->dev, "sw reset timeout\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
diff --git a/drivers/media/platform/amphion/vpu_cmds.h b/drivers/media/platform/amphion/vpu_cmds.h
new file mode 100644
index 000000000000..bc538d277bc9
--- /dev/null
+++ b/drivers/media/platform/amphion/vpu_cmds.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2020-2021 NXP
+ */
+
+#ifndef _AMPHION_VPU_CMDS_H
+#define _AMPHION_VPU_CMDS_H
+
+int vpu_session_configure_codec(struct vpu_inst *inst);
+int vpu_session_start(struct vpu_inst *inst);
+int vpu_session_stop(struct vpu_inst *inst);
+int vpu_session_abort(struct vpu_inst *inst);
+int vpu_session_rst_buf(struct vpu_inst *inst);
+int vpu_session_encode_frame(struct vpu_inst *inst, s64 timestamp);
+int vpu_session_alloc_fs(struct vpu_inst *inst, struct vpu_fs_info *fs);
+int vpu_session_release_fs(struct vpu_inst *inst, struct vpu_fs_info *fs);
+int vpu_session_fill_timestamp(struct vpu_inst *inst, struct vpu_ts_info *info);
+int vpu_session_update_parameters(struct vpu_inst *inst, void *arg);
+int vpu_core_snapshot(struct vpu_core *core);
+int vpu_core_sw_reset(struct vpu_core *core);
+int vpu_response_cmd(struct vpu_inst *inst, u32 response, u32 handled);
+void vpu_clear_request(struct vpu_inst *inst);
+int vpu_session_debug(struct vpu_inst *inst);
+
+#endif
diff --git a/drivers/media/platform/amphion/vpu_mbox.c b/drivers/media/platform/amphion/vpu_mbox.c
new file mode 100644
index 000000000000..bf759eb2fd46
--- /dev/null
+++ b/drivers/media/platform/amphion/vpu_mbox.c
@@ -0,0 +1,118 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2020-2021 NXP
+ */
+
+#include <linux/init.h>
+#include <linux/interconnect.h>
+#include <linux/ioctl.h>
+#include <linux/list.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+#include <linux/platform_device.h>
+#include "vpu.h"
+#include "vpu_mbox.h"
+#include "vpu_msgs.h"
+
+static void vpu_mbox_rx_callback(struct mbox_client *cl, void *msg)
+{
+ struct vpu_mbox *rx = container_of(cl, struct vpu_mbox, cl);
+ struct vpu_core *core = container_of(rx, struct vpu_core, rx);
+
+ vpu_isr(core, *(u32 *)msg);
+}
+
+static int vpu_mbox_request_channel(struct device *dev, struct vpu_mbox *mbox)
+{
+ struct mbox_chan *ch;
+ struct mbox_client *cl;
+
+ if (!dev || !mbox)
+ return -EINVAL;
+ if (mbox->ch)
+ return 0;
+
+ cl = &mbox->cl;
+ cl->dev = dev;
+ if (mbox->block) {
+ cl->tx_block = true;
+ cl->tx_tout = 1000;
+ } else {
+ cl->tx_block = false;
+ }
+ cl->knows_txdone = false;
+ cl->rx_callback = vpu_mbox_rx_callback;
+
+ ch = mbox_request_channel_byname(cl, mbox->name);
+ if (IS_ERR(ch)) {
+ dev_err(dev, "Failed to request mbox chan %s, ret : %ld\n",
+ mbox->name, PTR_ERR(ch));
+ return PTR_ERR(ch);
+ }
+
+ mbox->ch = ch;
+ return 0;
+}
+
+int vpu_mbox_init(struct vpu_core *core)
+{
+ scnprintf(core->tx_type.name, sizeof(core->tx_type.name) - 1, "tx0");
+ core->tx_type.block = true;
+
+ scnprintf(core->tx_data.name, sizeof(core->tx_data.name) - 1, "tx1");
+ core->tx_data.block = false;
+
+ scnprintf(core->rx.name, sizeof(core->rx.name) - 1, "rx");
+ core->rx.block = true;
+
+ return 0;
+}
+
+int vpu_mbox_request(struct vpu_core *core)
+{
+ int ret;
+
+ ret = vpu_mbox_request_channel(core->dev, &core->tx_type);
+ if (ret)
+ goto error;
+ ret = vpu_mbox_request_channel(core->dev, &core->tx_data);
+ if (ret)
+ goto error;
+ ret = vpu_mbox_request_channel(core->dev, &core->rx);
+ if (ret)
+ goto error;
+
+ dev_dbg(core->dev, "%s request mbox\n", vpu_core_type_desc(core->type));
+ return 0;
+error:
+ vpu_mbox_free(core);
+ return ret;
+}
+
+void vpu_mbox_free(struct vpu_core *core)
+{
+ mbox_free_channel(core->tx_type.ch);
+ mbox_free_channel(core->tx_data.ch);
+ mbox_free_channel(core->rx.ch);
+ core->tx_type.ch = NULL;
+ core->tx_data.ch = NULL;
+ core->rx.ch = NULL;
+ dev_dbg(core->dev, "%s free mbox\n", vpu_core_type_desc(core->type));
+}
+
+void vpu_mbox_send_type(struct vpu_core *core, u32 type)
+{
+ mbox_send_message(core->tx_type.ch, &type);
+}
+
+void vpu_mbox_send_msg(struct vpu_core *core, u32 type, u32 data)
+{
+ mbox_send_message(core->tx_data.ch, &data);
+ mbox_send_message(core->tx_type.ch, &type);
+}
+
+void vpu_mbox_enable_rx(struct vpu_dev *dev)
+{
+}
diff --git a/drivers/media/platform/amphion/vpu_mbox.h b/drivers/media/platform/amphion/vpu_mbox.h
new file mode 100644
index 000000000000..79cfd874e92b
--- /dev/null
+++ b/drivers/media/platform/amphion/vpu_mbox.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2020-2021 NXP
+ */
+
+#ifndef _AMPHION_VPU_MBOX_H
+#define _AMPHION_VPU_MBOX_H
+
+int vpu_mbox_init(struct vpu_core *core);
+int vpu_mbox_request(struct vpu_core *core);
+void vpu_mbox_free(struct vpu_core *core);
+void vpu_mbox_send_msg(struct vpu_core *core, u32 type, u32 data);
+void vpu_mbox_send_type(struct vpu_core *core, u32 type);
+void vpu_mbox_enable_rx(struct vpu_dev *dev);
+
+#endif
diff --git a/drivers/media/platform/amphion/vpu_msgs.c b/drivers/media/platform/amphion/vpu_msgs.c
new file mode 100644
index 000000000000..a406ab08e490
--- /dev/null
+++ b/drivers/media/platform/amphion/vpu_msgs.c
@@ -0,0 +1,385 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2020-2021 NXP
+ */
+
+#include <linux/init.h>
+#include <linux/interconnect.h>
+#include <linux/ioctl.h>
+#include <linux/list.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include "vpu.h"
+#include "vpu_core.h"
+#include "vpu_rpc.h"
+#include "vpu_mbox.h"
+#include "vpu_defs.h"
+#include "vpu_cmds.h"
+#include "vpu_msgs.h"
+#include "vpu_v4l2.h"
+
+#define VPU_PKT_HEADER_LENGTH 3
+
+struct vpu_msg_handler {
+ u32 id;
+ void (*done)(struct vpu_inst *inst, struct vpu_rpc_event *pkt);
+};
+
+static void vpu_session_handle_start_done(struct vpu_inst *inst, struct vpu_rpc_event *pkt)
+{
+ vpu_trace(inst->dev, "[%d]\n", inst->id);
+}
+
+static void vpu_session_handle_mem_request(struct vpu_inst *inst, struct vpu_rpc_event *pkt)
+{
+ struct vpu_pkt_mem_req_data req_data;
+
+ vpu_iface_unpack_msg_data(inst->core, pkt, (void *)&req_data);
+ vpu_trace(inst->dev, "[%d] %d:%d %d:%d %d:%d\n",
+ inst->id,
+ req_data.enc_frame_size,
+ req_data.enc_frame_num,
+ req_data.ref_frame_size,
+ req_data.ref_frame_num,
+ req_data.act_buf_size,
+ req_data.act_buf_num);
+ call_vop(inst, mem_request,
+ req_data.enc_frame_size,
+ req_data.enc_frame_num,
+ req_data.ref_frame_size,
+ req_data.ref_frame_num,
+ req_data.act_buf_size,
+ req_data.act_buf_num);
+}
+
+static void vpu_session_handle_stop_done(struct vpu_inst *inst, struct vpu_rpc_event *pkt)
+{
+ vpu_trace(inst->dev, "[%d]\n", inst->id);
+
+ call_vop(inst, stop_done);
+}
+
+static void vpu_session_handle_seq_hdr(struct vpu_inst *inst, struct vpu_rpc_event *pkt)
+{
+ struct vpu_dec_codec_info info;
+ const struct vpu_core_resources *res;
+
+ memset(&info, 0, sizeof(info));
+ res = vpu_get_resource(inst);
+ info.stride = res ? res->stride : 1;
+ vpu_iface_unpack_msg_data(inst->core, pkt, (void *)&info);
+ call_vop(inst, event_notify, VPU_MSG_ID_SEQ_HDR_FOUND, &info);
+}
+
+static void vpu_session_handle_resolution_change(struct vpu_inst *inst, struct vpu_rpc_event *pkt)
+{
+ call_vop(inst, event_notify, VPU_MSG_ID_RES_CHANGE, NULL);
+}
+
+static void vpu_session_handle_enc_frame_done(struct vpu_inst *inst, struct vpu_rpc_event *pkt)
+{
+ struct vpu_enc_pic_info info;
+
+ vpu_iface_unpack_msg_data(inst->core, pkt, (void *)&info);
+ dev_dbg(inst->dev, "[%d] frame id = %d, wptr = 0x%x, size = %d\n",
+ inst->id, info.frame_id, info.wptr, info.frame_size);
+ call_vop(inst, get_one_frame, &info);
+}
+
+static void vpu_session_handle_frame_request(struct vpu_inst *inst, struct vpu_rpc_event *pkt)
+{
+ struct vpu_fs_info fs;
+
+ vpu_iface_unpack_msg_data(inst->core, pkt, &fs);
+ call_vop(inst, event_notify, VPU_MSG_ID_FRAME_REQ, &fs);
+}
+
+static void vpu_session_handle_frame_release(struct vpu_inst *inst, struct vpu_rpc_event *pkt)
+{
+ if (inst->core->type == VPU_CORE_TYPE_ENC) {
+ struct vpu_frame_info info;
+
+ memset(&info, 0, sizeof(info));
+ vpu_iface_unpack_msg_data(inst->core, pkt, (void *)&info.sequence);
+ dev_dbg(inst->dev, "[%d] %d\n", inst->id, info.sequence);
+ info.type = inst->out_format.type;
+ call_vop(inst, buf_done, &info);
+ } else if (inst->core->type == VPU_CORE_TYPE_DEC) {
+ struct vpu_fs_info fs;
+
+ vpu_iface_unpack_msg_data(inst->core, pkt, &fs);
+ call_vop(inst, event_notify, VPU_MSG_ID_FRAME_RELEASE, &fs);
+ }
+}
+
+static void vpu_session_handle_input_done(struct vpu_inst *inst, struct vpu_rpc_event *pkt)
+{
+ dev_dbg(inst->dev, "[%d]\n", inst->id);
+ call_vop(inst, input_done);
+}
+
+static void vpu_session_handle_pic_decoded(struct vpu_inst *inst, struct vpu_rpc_event *pkt)
+{
+ struct vpu_dec_pic_info info;
+
+ vpu_iface_unpack_msg_data(inst->core, pkt, (void *)&info);
+ call_vop(inst, get_one_frame, &info);
+}
+
+static void vpu_session_handle_pic_done(struct vpu_inst *inst, struct vpu_rpc_event *pkt)
+{
+ struct vpu_dec_pic_info info;
+ struct vpu_frame_info frame;
+
+ memset(&frame, 0, sizeof(frame));
+ vpu_iface_unpack_msg_data(inst->core, pkt, (void *)&info);
+ if (inst->core->type == VPU_CORE_TYPE_DEC)
+ frame.type = inst->cap_format.type;
+ frame.id = info.id;
+ frame.luma = info.luma;
+ frame.skipped = info.skipped;
+ frame.timestamp = info.timestamp;
+
+ call_vop(inst, buf_done, &frame);
+}
+
+static void vpu_session_handle_eos(struct vpu_inst *inst, struct vpu_rpc_event *pkt)
+{
+ call_vop(inst, event_notify, VPU_MSG_ID_PIC_EOS, NULL);
+}
+
+static void vpu_session_handle_error(struct vpu_inst *inst, struct vpu_rpc_event *pkt)
+{
+ dev_err(inst->dev, "unsupported stream\n");
+ call_vop(inst, event_notify, VPU_MSG_ID_UNSUPPORTED, NULL);
+ vpu_v4l2_set_error(inst);
+}
+
+static void vpu_session_handle_firmware_xcpt(struct vpu_inst *inst, struct vpu_rpc_event *pkt)
+{
+ char *str = (char *)pkt->data;
+
+ dev_err(inst->dev, "%s firmware xcpt: %s\n",
+ vpu_core_type_desc(inst->core->type), str);
+ call_vop(inst, event_notify, VPU_MSG_ID_FIRMWARE_XCPT, NULL);
+ set_bit(inst->id, &inst->core->hang_mask);
+ vpu_v4l2_set_error(inst);
+}
+
+struct vpu_msg_handler handlers[] = {
+ {VPU_MSG_ID_START_DONE, vpu_session_handle_start_done},
+ {VPU_MSG_ID_STOP_DONE, vpu_session_handle_stop_done},
+ {VPU_MSG_ID_MEM_REQUEST, vpu_session_handle_mem_request},
+ {VPU_MSG_ID_SEQ_HDR_FOUND, vpu_session_handle_seq_hdr},
+ {VPU_MSG_ID_RES_CHANGE, vpu_session_handle_resolution_change},
+ {VPU_MSG_ID_FRAME_INPUT_DONE, vpu_session_handle_input_done},
+ {VPU_MSG_ID_FRAME_REQ, vpu_session_handle_frame_request},
+ {VPU_MSG_ID_FRAME_RELEASE, vpu_session_handle_frame_release},
+ {VPU_MSG_ID_ENC_DONE, vpu_session_handle_enc_frame_done},
+ {VPU_MSG_ID_PIC_DECODED, vpu_session_handle_pic_decoded},
+ {VPU_MSG_ID_DEC_DONE, vpu_session_handle_pic_done},
+ {VPU_MSG_ID_PIC_EOS, vpu_session_handle_eos},
+ {VPU_MSG_ID_UNSUPPORTED, vpu_session_handle_error},
+ {VPU_MSG_ID_FIRMWARE_XCPT, vpu_session_handle_firmware_xcpt},
+};
+
+static int vpu_session_handle_msg(struct vpu_inst *inst, struct vpu_rpc_event *msg)
+{
+ int ret;
+ u32 msg_id;
+ struct vpu_msg_handler *handler = NULL;
+ unsigned int i;
+
+ ret = vpu_iface_convert_msg_id(inst->core, msg->hdr.id);
+ if (ret < 0)
+ return -EINVAL;
+
+ msg_id = ret;
+ dev_dbg(inst->dev, "[%d] receive event(0x%x)\n", inst->id, msg_id);
+
+ for (i = 0; i < ARRAY_SIZE(handlers); i++) {
+ if (handlers[i].id == msg_id) {
+ handler = &handlers[i];
+ break;
+ }
+ }
+
+ if (handler && handler->done)
+ handler->done(inst, msg);
+
+ vpu_response_cmd(inst, msg_id, 1);
+
+ return 0;
+}
+
+static bool vpu_inst_receive_msg(struct vpu_inst *inst, struct vpu_rpc_event *pkt)
+{
+ u32 bytes = sizeof(struct vpu_rpc_event_header);
+ u32 ret;
+
+ memset(pkt, 0, sizeof(*pkt));
+ if (kfifo_len(&inst->msg_fifo) < bytes)
+ return false;
+
+ ret = kfifo_out(&inst->msg_fifo, pkt, bytes);
+ if (ret != bytes)
+ return false;
+
+ if (pkt->hdr.num > 0) {
+ bytes = pkt->hdr.num * sizeof(u32);
+ ret = kfifo_out(&inst->msg_fifo, pkt->data, bytes);
+ if (ret != bytes)
+ return false;
+ }
+
+ return true;
+}
+
+void vpu_inst_run_work(struct work_struct *work)
+{
+ struct vpu_inst *inst = container_of(work, struct vpu_inst, msg_work);
+ struct vpu_rpc_event pkt;
+
+ while (vpu_inst_receive_msg(inst, &pkt))
+ vpu_session_handle_msg(inst, &pkt);
+}
+
+static void vpu_inst_handle_msg(struct vpu_inst *inst, struct vpu_rpc_event *pkt)
+{
+ u32 bytes;
+ u32 id = pkt->hdr.id;
+ int ret;
+
+ if (!inst->workqueue)
+ return;
+
+ bytes = sizeof(pkt->hdr) + pkt->hdr.num * sizeof(u32);
+ ret = kfifo_in(&inst->msg_fifo, pkt, bytes);
+ if (ret != bytes)
+ dev_err(inst->dev, "[%d:%d]overflow: %d\n", inst->core->id, inst->id, id);
+ queue_work(inst->workqueue, &inst->msg_work);
+}
+
+static int vpu_handle_msg(struct vpu_core *core)
+{
+ struct vpu_rpc_event pkt;
+ struct vpu_inst *inst;
+ int ret;
+
+ memset(&pkt, 0, sizeof(pkt));
+ while (!vpu_iface_receive_msg(core, &pkt)) {
+ dev_dbg(core->dev, "event index = %d, id = %d, num = %d\n",
+ pkt.hdr.index, pkt.hdr.id, pkt.hdr.num);
+
+ ret = vpu_iface_convert_msg_id(core, pkt.hdr.id);
+ if (ret < 0)
+ continue;
+
+ inst = vpu_core_find_instance(core, pkt.hdr.index);
+ if (inst) {
+ vpu_response_cmd(inst, ret, 0);
+ mutex_lock(&core->cmd_lock);
+ vpu_inst_record_flow(inst, ret);
+ mutex_unlock(&core->cmd_lock);
+
+ vpu_inst_handle_msg(inst, &pkt);
+ vpu_inst_put(inst);
+ }
+ memset(&pkt, 0, sizeof(pkt));
+ }
+
+ return 0;
+}
+
+static int vpu_isr_thread(struct vpu_core *core, u32 irq_code)
+{
+ dev_dbg(core->dev, "irq code = 0x%x\n", irq_code);
+ switch (irq_code) {
+ case VPU_IRQ_CODE_SYNC:
+ vpu_mbox_send_msg(core, PRC_BUF_OFFSET, core->rpc.phys - core->fw.phys);
+ vpu_mbox_send_msg(core, BOOT_ADDRESS, core->fw.phys);
+ vpu_mbox_send_msg(core, INIT_DONE, 2);
+ break;
+ case VPU_IRQ_CODE_BOOT_DONE:
+ break;
+ case VPU_IRQ_CODE_SNAPSHOT_DONE:
+ break;
+ default:
+ vpu_handle_msg(core);
+ break;
+ }
+
+ return 0;
+}
+
+static void vpu_core_run_msg_work(struct vpu_core *core)
+{
+ const unsigned int SIZE = sizeof(u32);
+
+ while (kfifo_len(&core->msg_fifo) >= SIZE) {
+ u32 data;
+
+ if (kfifo_out(&core->msg_fifo, &data, SIZE) == SIZE)
+ vpu_isr_thread(core, data);
+ }
+}
+
+void vpu_msg_run_work(struct work_struct *work)
+{
+ struct vpu_core *core = container_of(work, struct vpu_core, msg_work);
+ unsigned long delay = msecs_to_jiffies(10);
+
+ vpu_core_run_msg_work(core);
+ queue_delayed_work(core->workqueue, &core->msg_delayed_work, delay);
+}
+
+void vpu_msg_delayed_work(struct work_struct *work)
+{
+ struct vpu_core *core;
+ struct delayed_work *dwork;
+ u32 bytes = sizeof(bytes);
+ u32 i;
+
+ if (!work)
+ return;
+
+ dwork = to_delayed_work(work);
+ core = container_of(dwork, struct vpu_core, msg_delayed_work);
+ if (kfifo_len(&core->msg_fifo) >= bytes)
+ vpu_core_run_msg_work(core);
+
+ bytes = sizeof(struct vpu_rpc_event_header);
+ for (i = 0; i < core->supported_instance_count; i++) {
+ struct vpu_inst *inst = vpu_core_find_instance(core, i);
+
+ if (!inst)
+ continue;
+
+ if (inst->workqueue && kfifo_len(&inst->msg_fifo) >= bytes)
+ queue_work(inst->workqueue, &inst->msg_work);
+
+ vpu_inst_put(inst);
+ }
+}
+
+int vpu_isr(struct vpu_core *core, u32 irq)
+{
+ switch (irq) {
+ case VPU_IRQ_CODE_SYNC:
+ break;
+ case VPU_IRQ_CODE_BOOT_DONE:
+ complete(&core->cmp);
+ break;
+ case VPU_IRQ_CODE_SNAPSHOT_DONE:
+ complete(&core->cmp);
+ break;
+ default:
+ break;
+ }
+
+ if (kfifo_in(&core->msg_fifo, &irq, sizeof(irq)) != sizeof(irq))
+ dev_err(core->dev, "[%d]overflow: %d\n", core->id, irq);
+ queue_work(core->workqueue, &core->msg_work);
+
+ return 0;
+}
diff --git a/drivers/media/platform/amphion/vpu_msgs.h b/drivers/media/platform/amphion/vpu_msgs.h
new file mode 100644
index 000000000000..c466b4f62aad
--- /dev/null
+++ b/drivers/media/platform/amphion/vpu_msgs.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2020-2021 NXP
+ */
+
+#ifndef _AMPHION_VPU_MSGS_H
+#define _AMPHION_VPU_MSGS_H
+
+int vpu_isr(struct vpu_core *core, u32 irq);
+void vpu_inst_run_work(struct work_struct *work);
+void vpu_msg_run_work(struct work_struct *work);
+void vpu_msg_delayed_work(struct work_struct *work);
+
+#endif
--
2.33.0