1 files changed, 494 insertions, 0 deletions

diff --git a/drivers/media/platform/amphion/vpu_dbg.c b/drivers/media/platform/amphion/vpu_dbg.c
new file mode 100644
index 0000000000..982c2c7774
--- /dev/null
+++ b/drivers/media/platform/amphion/vpu_dbg.c
@@ -0,0 +1,494 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2020-2021 NXP
+ */
+
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/ioctl.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/pm_runtime.h>
+#include <media/v4l2-device.h>
+#include <linux/debugfs.h>
+#include "vpu.h"
+#include "vpu_defs.h"
+#include "vpu_core.h"
+#include "vpu_helpers.h"
+#include "vpu_cmds.h"
+#include "vpu_rpc.h"
+#include "vpu_v4l2.h"
+
+struct print_buf_desc {
+	u32 start_h_phy;
+	u32 start_h_vir;
+	u32 start_m;
+	u32 bytes;
+	u32 read;
+	u32 write;
+	char buffer[];
+};
+
+static char *vb2_stat_name[] = {
+	[VB2_BUF_STATE_DEQUEUED] = "dequeued",
+	[VB2_BUF_STATE_IN_REQUEST] = "in_request",
+	[VB2_BUF_STATE_PREPARING] = "preparing",
+	[VB2_BUF_STATE_QUEUED] = "queued",
+	[VB2_BUF_STATE_ACTIVE] = "active",
+	[VB2_BUF_STATE_DONE] = "done",
+	[VB2_BUF_STATE_ERROR] = "error",
+};
+
+static char *vpu_stat_name[] = {
+	[VPU_BUF_STATE_IDLE] = "idle",
+	[VPU_BUF_STATE_INUSE] = "inuse",
+	[VPU_BUF_STATE_DECODED] = "decoded",
+	[VPU_BUF_STATE_READY] = "ready",
+	[VPU_BUF_STATE_SKIP] = "skip",
+	[VPU_BUF_STATE_ERROR] = "error",
+};
+
+static inline const char *to_vpu_stat_name(int state)
+{
+	if (state <= VPU_BUF_STATE_ERROR)
+		return vpu_stat_name[state];
+	return "unknown";
+}
+
+static int vpu_dbg_instance(struct seq_file *s, void *data)
+{
+	struct vpu_inst *inst = s->private;
+	char str[128];
+	int num;
+	struct vb2_queue *vq;
+	int i;
+
+	if (!inst->fh.m2m_ctx)
+		return 0;
+	num = scnprintf(str, sizeof(str), "[%s]\n", vpu_core_type_desc(inst->type));
+	if (seq_write(s, str, num))
+		return 0;
+
+	num = scnprintf(str, sizeof(str), "tgig = %d,pid = %d\n", inst->tgid, inst->pid);
+	if (seq_write(s, str, num))
+		return 0;
+	num = scnprintf(str, sizeof(str), "state = %s\n", vpu_codec_state_name(inst->state));
+	if (seq_write(s, str, num))
+		return 0;
+	num = scnprintf(str, sizeof(str),
+			"min_buffer_out = %d, min_buffer_cap = %d\n",
+			inst->min_buffer_out, inst->min_buffer_cap);
+	if (seq_write(s, str, num))
+		return 0;
+
+	vq = v4l2_m2m_get_src_vq(inst->fh.m2m_ctx);
+	num = scnprintf(str, sizeof(str),
+			"output (%2d, %2d): fmt = %c%c%c%c %d x %d, %d;",
+			vb2_is_streaming(vq),
+			vq->num_buffers,
+			inst->out_format.pixfmt,
+			inst->out_format.pixfmt >> 8,
+			inst->out_format.pixfmt >> 16,
+			inst->out_format.pixfmt >> 24,
+			inst->out_format.width,
+			inst->out_format.height,
+			vq->last_buffer_dequeued);
+	if (seq_write(s, str, num))
+		return 0;
+	for (i = 0; i < inst->out_format.mem_planes; i++) {
+		num = scnprintf(str, sizeof(str), " %d(%d)",
+				vpu_get_fmt_plane_size(&inst->out_format, i),
+				inst->out_format.bytesperline[i]);
+		if (seq_write(s, str, num))
+			return 0;
+	}
+	if (seq_write(s, "\n", 1))
+		return 0;
+
+	vq = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
+	num = scnprintf(str, sizeof(str),
+			"capture(%2d, %2d): fmt = %c%c%c%c %d x %d, %d;",
+			vb2_is_streaming(vq),
+			vq->num_buffers,
+			inst->cap_format.pixfmt,
+			inst->cap_format.pixfmt >> 8,
+			inst->cap_format.pixfmt >> 16,
+			inst->cap_format.pixfmt >> 24,
+			inst->cap_format.width,
+			inst->cap_format.height,
+			vq->last_buffer_dequeued);
+	if (seq_write(s, str, num))
+		return 0;
+	for (i = 0; i < inst->cap_format.mem_planes; i++) {
+		num = scnprintf(str, sizeof(str), " %d(%d)",
+				vpu_get_fmt_plane_size(&inst->cap_format, i),
+				inst->cap_format.bytesperline[i]);
+		if (seq_write(s, str, num))
+			return 0;
+	}
+	if (seq_write(s, "\n", 1))
+		return 0;
+	num = scnprintf(str, sizeof(str), "crop: (%d, %d) %d x %d\n",
+			inst->crop.left,
+			inst->crop.top,
+			inst->crop.width,
+			inst->crop.height);
+	if (seq_write(s, str, num))
+		return 0;
+
+	vq = v4l2_m2m_get_src_vq(inst->fh.m2m_ctx);
+	for (i = 0; i < vq->num_buffers; i++) {
+		struct vb2_buffer *vb = vq->bufs[i];
+		struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+
+		if (vb->state == VB2_BUF_STATE_DEQUEUED)
+			continue;
+		num = scnprintf(str, sizeof(str),
+				"output [%2d] state = %10s, %8s\n",
+				i, vb2_stat_name[vb->state],
+				to_vpu_stat_name(vpu_get_buffer_state(vbuf)));
+		if (seq_write(s, str, num))
+			return 0;
+	}
+
+	vq = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
+	for (i = 0; i < vq->num_buffers; i++) {
+		struct vb2_buffer *vb = vq->bufs[i];
+		struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+
+		if (vb->state == VB2_BUF_STATE_DEQUEUED)
+			continue;
+		num = scnprintf(str, sizeof(str),
+				"capture[%2d] state = %10s, %8s\n",
+				i, vb2_stat_name[vb->state],
+				to_vpu_stat_name(vpu_get_buffer_state(vbuf)));
+		if (seq_write(s, str, num))
+			return 0;
+	}
+
+	num = scnprintf(str, sizeof(str), "sequence = %d\n", inst->sequence);
+	if (seq_write(s, str, num))
+		return 0;
+
+	if (inst->use_stream_buffer) {
+		num = scnprintf(str, sizeof(str), "stream_buffer = %d / %d, <%pad, 0x%x>\n",
+				vpu_helper_get_used_space(inst),
+				inst->stream_buffer.length,
+				&inst->stream_buffer.phys,
+				inst->stream_buffer.length);
+		if (seq_write(s, str, num))
+			return 0;
+	}
+	num = scnprintf(str, sizeof(str), "kfifo len = 0x%x\n", kfifo_len(&inst->msg_fifo));
+	if (seq_write(s, str, num))
+		return 0;
+
+	num = scnprintf(str, sizeof(str), "flow :\n");
+	if (seq_write(s, str, num))
+		return 0;
+
+	mutex_lock(&inst->core->cmd_lock);
+	for (i = 0; i < ARRAY_SIZE(inst->flows); i++) {
+		u32 idx = (inst->flow_idx + i) % (ARRAY_SIZE(inst->flows));
+
+		if (!inst->flows[idx])
+			continue;
+		num = scnprintf(str, sizeof(str), "\t[%s] %s\n",
+				inst->flows[idx] >= VPU_MSG_ID_NOOP ? "M" : "C",
+				vpu_id_name(inst->flows[idx]));
+		if (seq_write(s, str, num)) {
+			mutex_unlock(&inst->core->cmd_lock);
+			return 0;
+		}
+	}
+	mutex_unlock(&inst->core->cmd_lock);
+
+	i = 0;
+	while (true) {
+		num = call_vop(inst, get_debug_info, str, sizeof(str), i++);
+		if (num <= 0)
+			break;
+		if (seq_write(s, str, num))
+			return 0;
+	}
+
+	return 0;
+}
+
+static int vpu_dbg_core(struct seq_file *s, void *data)
+{
+	struct vpu_core *core = s->private;
+	struct vpu_shared_addr *iface = core->iface;
+	char str[128];
+	int num;
+
+	num = scnprintf(str, sizeof(str), "[%s]\n", vpu_core_type_desc(core->type));
+	if (seq_write(s, str, num))
+		return 0;
+
+	num = scnprintf(str, sizeof(str), "boot_region  = <%pad, 0x%x>\n",
+			&core->fw.phys, core->fw.length);
+	if (seq_write(s, str, num))
+		return 0;
+	num = scnprintf(str, sizeof(str), "rpc_region   = <%pad, 0x%x> used = 0x%x\n",
+			&core->rpc.phys, core->rpc.length, core->rpc.bytesused);
+	if (seq_write(s, str, num))
+		return 0;
+	num = scnprintf(str, sizeof(str), "fwlog_region = <%pad, 0x%x>\n",
+			&core->log.phys, core->log.length);
+	if (seq_write(s, str, num))
+		return 0;
+
+	num = scnprintf(str, sizeof(str), "power %s\n",
+			vpu_iface_get_power_state(core) ? "on" : "off");
+	if (seq_write(s, str, num))
+		return 0;
+	num = scnprintf(str, sizeof(str), "state = %d\n", core->state);
+	if (seq_write(s, str, num))
+		return 0;
+	if (core->state == VPU_CORE_DEINIT)
+		return 0;
+	num = scnprintf(str, sizeof(str), "fw version = %d.%d.%d\n",
+			(core->fw_version >> 16) & 0xff,
+			(core->fw_version >> 8) & 0xff,
+			core->fw_version & 0xff);
+	if (seq_write(s, str, num))
+		return 0;
+	num = scnprintf(str, sizeof(str), "instances = %d/%d (0x%02lx), %d\n",
+			hweight32(core->instance_mask),
+			core->supported_instance_count,
+			core->instance_mask,
+			core->request_count);
+	if (seq_write(s, str, num))
+		return 0;
+	num = scnprintf(str, sizeof(str), "kfifo len = 0x%x\n", kfifo_len(&core->msg_fifo));
+	if (seq_write(s, str, num))
+		return 0;
+	num = scnprintf(str, sizeof(str),
+			"cmd_buf:[0x%x, 0x%x], wptr = 0x%x, rptr = 0x%x\n",
+			iface->cmd_desc->start,
+			iface->cmd_desc->end,
+			iface->cmd_desc->wptr,
+			iface->cmd_desc->rptr);
+	if (seq_write(s, str, num))
+		return 0;
+	num = scnprintf(str, sizeof(str),
+			"msg_buf:[0x%x, 0x%x], wptr = 0x%x, rptr = 0x%x\n",
+			iface->msg_desc->start,
+			iface->msg_desc->end,
+			iface->msg_desc->wptr,
+			iface->msg_desc->rptr);
+	if (seq_write(s, str, num))
+		return 0;
+
+	return 0;
+}
+
+static int vpu_dbg_fwlog(struct seq_file *s, void *data)
+{
+	struct vpu_core *core = s->private;
+	struct print_buf_desc *print_buf;
+	int length;
+	u32 rptr;
+	u32 wptr;
+	int ret = 0;
+
+	if (!core->log.virt || core->state == VPU_CORE_DEINIT)
+		return 0;
+
+	print_buf = core->log.virt;
+	rptr = print_buf->read;
+	wptr = print_buf->write;
+
+	if (rptr == wptr)
+		return 0;
+	else if (rptr < wptr)
+		length = wptr - rptr;
+	else
+		length = print_buf->bytes + wptr - rptr;
+
+	if (s->count + length >= s->size) {
+		s->count = s->size;
+		return 0;
+	}
+
+	if (rptr + length >= print_buf->bytes) {
+		int num = print_buf->bytes - rptr;
+
+		if (seq_write(s, print_buf->buffer + rptr, num))
+			ret = -1;
+		length -= num;
+		rptr = 0;
+	}
+
+	if (length) {
+		if (seq_write(s, print_buf->buffer + rptr, length))
+			ret = -1;
+		rptr += length;
+	}
+	if (!ret)
+		print_buf->read = rptr;
+
+	return 0;
+}
+
+static int vpu_dbg_inst_open(struct inode *inode, struct file *filp)
+{
+	return single_open(filp, vpu_dbg_instance, inode->i_private);
+}
+
+static ssize_t vpu_dbg_inst_write(struct file *file,
+				  const char __user *user_buf, size_t size, loff_t *ppos)
+{
+	struct seq_file *s = file->private_data;
+	struct vpu_inst *inst = s->private;
+
+	vpu_session_debug(inst);
+
+	return size;
+}
+
+static ssize_t vpu_dbg_core_write(struct file *file,
+				  const char __user *user_buf, size_t size, loff_t *ppos)
+{
+	struct seq_file *s = file->private_data;
+	struct vpu_core *core = s->private;
+
+	pm_runtime_resume_and_get(core->dev);
+	mutex_lock(&core->lock);
+	if (vpu_iface_get_power_state(core) && !core->request_count) {
+		dev_info(core->dev, "reset\n");
+		if (!vpu_core_sw_reset(core)) {
+			vpu_core_set_state(core, VPU_CORE_ACTIVE);
+			core->hang_mask = 0;
+		}
+	}
+	mutex_unlock(&core->lock);
+	pm_runtime_put_sync(core->dev);
+
+	return size;
+}
+
+static int vpu_dbg_core_open(struct inode *inode, struct file *filp)
+{
+	return single_open(filp, vpu_dbg_core, inode->i_private);
+}
+
+static int vpu_dbg_fwlog_open(struct inode *inode, struct file *filp)
+{
+	return single_open(filp, vpu_dbg_fwlog, inode->i_private);
+}
+
+static const struct file_operations vpu_dbg_inst_fops = {
+	.owner = THIS_MODULE,
+	.open = vpu_dbg_inst_open,
+	.release = single_release,
+	.read = seq_read,
+	.write = vpu_dbg_inst_write,
+};
+
+static const struct file_operations vpu_dbg_core_fops = {
+	.owner = THIS_MODULE,
+	.open = vpu_dbg_core_open,
+	.release = single_release,
+	.read = seq_read,
+	.write = vpu_dbg_core_write,
+};
+
+static const struct file_operations vpu_dbg_fwlog_fops = {
+	.owner = THIS_MODULE,
+	.open = vpu_dbg_fwlog_open,
+	.release = single_release,
+	.read = seq_read,
+};
+
+int vpu_inst_create_dbgfs_file(struct vpu_inst *inst)
+{
+	struct vpu_dev *vpu;
+	char name[64];
+
+	if (!inst || !inst->core || !inst->core->vpu)
+		return -EINVAL;
+
+	vpu = inst->core->vpu;
+	if (!vpu->debugfs)
+		return -EINVAL;
+
+	if (inst->debugfs)
+		return 0;
+
+	scnprintf(name, sizeof(name), "instance.%d.%d", inst->core->id, inst->id);
+	inst->debugfs = debugfs_create_file((const char *)name,
+					    VERIFY_OCTAL_PERMISSIONS(0644),
+					    vpu->debugfs,
+					    inst,
+					    &vpu_dbg_inst_fops);
+
+	return 0;
+}
+
+int vpu_inst_remove_dbgfs_file(struct vpu_inst *inst)
+{
+	if (!inst)
+		return 0;
+
+	debugfs_remove(inst->debugfs);
+	inst->debugfs = NULL;
+
+	return 0;
+}
+
+int vpu_core_create_dbgfs_file(struct vpu_core *core)
+{
+	struct vpu_dev *vpu;
+	char name[64];
+
+	if (!core || !core->vpu)
+		return -EINVAL;
+
+	vpu = core->vpu;
+	if (!vpu->debugfs)
+		return -EINVAL;
+
+	if (!core->debugfs) {
+		scnprintf(name, sizeof(name), "core.%d", core->id);
+		core->debugfs = debugfs_create_file((const char *)name,
+						    VERIFY_OCTAL_PERMISSIONS(0644),
+						    vpu->debugfs,
+						    core,
+						    &vpu_dbg_core_fops);
+	}
+	if (!core->debugfs_fwlog) {
+		scnprintf(name, sizeof(name), "fwlog.%d", core->id);
+		core->debugfs_fwlog = debugfs_create_file((const char *)name,
+							  VERIFY_OCTAL_PERMISSIONS(0444),
+							  vpu->debugfs,
+							  core,
+							  &vpu_dbg_fwlog_fops);
+	}
+
+	return 0;
+}
+
+int vpu_core_remove_dbgfs_file(struct vpu_core *core)
+{
+	if (!core)
+		return 0;
+	debugfs_remove(core->debugfs);
+	core->debugfs = NULL;
+	debugfs_remove(core->debugfs_fwlog);
+	core->debugfs_fwlog = NULL;
+
+	return 0;
+}
+
+void vpu_inst_record_flow(struct vpu_inst *inst, u32 flow)
+{
+	if (!inst)
+		return;
+
+	inst->flows[inst->flow_idx] = flow;
+	inst->flow_idx = (inst->flow_idx + 1) % (ARRAY_SIZE(inst->flows));
+}