android_kernel_samsung_sm8650-modules/hw_fence/include/hw_fence_drv_debug.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
 */

#ifndef __HW_FENCE_DRV_DEBUG
#define __HW_FENCE_DRV_DEBUG

#include "hw_fence_drv_ipc.h"

#define HW_FENCE_NAME_SIZE 64

enum hw_fence_drv_prio {
	HW_FENCE_HIGH = 0x000001,	/* High density debug messages (noisy) */
	HW_FENCE_LOW = 0x000002,	/* Low density debug messages */
	HW_FENCE_INFO = 0x000004,	/* Informational prints */
	HW_FENCE_INIT = 0x00008,	/* Initialization logs */
	HW_FENCE_QUEUE = 0x000010,	/* Queue logs */
	HW_FENCE_LUT = 0x000020,	/* Look-up and algorithm logs */
	HW_FENCE_IRQ = 0x000040,	/* Interrupt-related messages */
	HW_FENCE_PRINTK = 0x010000,
};

extern u32 msm_hw_fence_debug_level;

#define dprintk(__level, __fmt, ...) \
	do { \
		if (msm_hw_fence_debug_level & __level) \
			if (msm_hw_fence_debug_level & HW_FENCE_PRINTK) \
				pr_err(__fmt, ##__VA_ARGS__); \
	} while (0)


#define HWFNC_ERR(fmt, ...) \
	pr_err("[hwfence:%s:%d][err][%pS] "fmt, __func__, __LINE__, \
	__builtin_return_address(0), ##__VA_ARGS__)

#define HWFNC_DBG_H(fmt, ...) \
	dprintk(HW_FENCE_HIGH, "[hwfence:%s:%d][dbgh]"fmt, __func__, __LINE__, ##__VA_ARGS__)

#define HWFNC_DBG_L(fmt, ...) \
	dprintk(HW_FENCE_LOW, "[hwfence:%s:%d][dbgl]"fmt, __func__, __LINE__, ##__VA_ARGS__)

#define HWFNC_DBG_INFO(fmt, ...) \
	dprintk(HW_FENCE_INFO, "[hwfence:%s:%d][dbgi]"fmt, __func__, __LINE__, ##__VA_ARGS__)

#define HWFNC_DBG_INIT(fmt, ...) \
	dprintk(HW_FENCE_INIT, "[hwfence:%s:%d][dbg]"fmt, __func__, __LINE__, ##__VA_ARGS__)

#define HWFNC_DBG_Q(fmt, ...) \
	dprintk(HW_FENCE_QUEUE, "[hwfence:%s:%d][dbgq]"fmt, __func__, __LINE__, ##__VA_ARGS__)

#define HWFNC_DBG_LUT(fmt, ...) \
	dprintk(HW_FENCE_LUT, "[hwfence:%s:%d][dbglut]"fmt, __func__, __LINE__, ##__VA_ARGS__)

#define HWFNC_DBG_IRQ(fmt, ...) \
	dprintk(HW_FENCE_IRQ, "[hwfence:%s:%d][dbgirq]"fmt, __func__, __LINE__, ##__VA_ARGS__)

#define HWFNC_WARN(fmt, ...) \
	pr_warn("[hwfence:%s:%d][warn][%pS] "fmt, __func__, __LINE__, \
	__builtin_return_address(0), ##__VA_ARGS__)

int hw_fence_debug_debugfs_register(struct hw_fence_driver_data *drv_data);

#if IS_ENABLED(CONFIG_DEBUG_FS)

int process_validation_client_loopback(struct hw_fence_driver_data *drv_data, int client_id);

extern const struct file_operations hw_sync_debugfs_fops;

struct hw_fence_out_clients_map {
	int ipc_client_id; /* ipc client id for the hw fence client */
	int ipc_signal_id; /* ipc signal id for the hw fence client */
};

/* These signals are the ones that the actual clients should be triggering, hw-fence driver
 * does not need to have knowledge of these signals. Adding them here for debugging purposes.
 * Only fence controller and the cliens know these id's, since these
 * are to trigger the ipcc from the 'client hw-core' to the 'hw-fence controller'
 * The index of this struct must match the enum hw_fence_client_id
 */
static const struct hw_fence_out_clients_map
			dbg_out_clients_signal_map_no_dpu[HW_FENCE_CLIENT_MAX] = {
	{HW_FENCE_IPC_CLIENT_ID_APPS, 0},  /* CTRL_LOOPBACK */
	{HW_FENCE_IPC_CLIENT_ID_GPU, 0},  /* CTX0 */
	{HW_FENCE_IPC_CLIENT_ID_APPS, 2},  /* CTL0 */
	{HW_FENCE_IPC_CLIENT_ID_APPS, 4},  /* CTL1 */
	{HW_FENCE_IPC_CLIENT_ID_APPS, 6},  /* CTL2 */
	{HW_FENCE_IPC_CLIENT_ID_APPS, 8},  /* CTL3 */
	{HW_FENCE_IPC_CLIENT_ID_APPS, 10}, /* CTL4 */
	{HW_FENCE_IPC_CLIENT_ID_APPS, 12}, /* CTL5 */
	{HW_FENCE_IPC_CLIENT_ID_APPS, 21}, /* VAL0 */
	{HW_FENCE_IPC_CLIENT_ID_APPS, 22}, /* VAL1 */
	{HW_FENCE_IPC_CLIENT_ID_APPS, 23}, /* VAL2 */
	{HW_FENCE_IPC_CLIENT_ID_APPS, 24}, /* VAL3 */
	{HW_FENCE_IPC_CLIENT_ID_APPS, 25}, /* VAL4 */
	{HW_FENCE_IPC_CLIENT_ID_APPS, 26}, /* VAL5 */
	{HW_FENCE_IPC_CLIENT_ID_APPS, 27}, /* VAL6 */
};

/**
 * struct hw_dma_fence - fences created by hw-fence for debugging.
 * @base: base dma-fence structure, this must remain at beginning of the struct.
 * @name: name of each fence.
 * @client_handle: handle for the client owner of this fence, this is returned by the hw-fence
 *                 driver after a successful registration of the client and used by this fence
 *                 during release.
 */
struct hw_dma_fence {
	struct dma_fence base;
	char name[HW_FENCE_NAME_SIZE];
	void *client_handle;
};

static inline struct hw_dma_fence *to_hw_dma_fence(struct dma_fence *fence)
{
	return container_of(fence, struct hw_dma_fence, base);
}

static inline void _cleanup_fences(int i, struct dma_fence **fences, spinlock_t **fences_lock)
{
	struct hw_dma_fence *dma_fence;
	int fence_idx;

	for (fence_idx = i; fence_idx >= 0 ; fence_idx--) {
		kfree(fences_lock[fence_idx]);

		dma_fence = to_hw_dma_fence(fences[fence_idx]);
		kfree(dma_fence);
	}

	kfree(fences_lock);
	kfree(fences);
}

static const char *hw_fence_dbg_get_driver_name(struct dma_fence *fence)
{
	struct hw_dma_fence *hw_dma_fence = to_hw_dma_fence(fence);

	return hw_dma_fence->name;
}

static const char *hw_fence_dbg_get_timeline_name(struct dma_fence *fence)
{
	struct hw_dma_fence *hw_dma_fence = to_hw_dma_fence(fence);

	return hw_dma_fence->name;
}

static bool hw_fence_dbg_enable_signaling(struct dma_fence *fence)
{
	return true;
}

static void _hw_fence_release(struct hw_dma_fence *hw_dma_fence)
{
	if (IS_ERR_OR_NULL(hw_dma_fence->client_handle)) {
		HWFNC_ERR("invalid hwfence data, won't release hw_fence!\n");
		return;
	}

	/* release hw-fence */
	if (msm_hw_fence_destroy(hw_dma_fence->client_handle, &hw_dma_fence->base))
		HWFNC_ERR("failed to release hw_fence!\n");
}

static void hw_fence_dbg_release(struct dma_fence *fence)
{
	struct hw_dma_fence *hw_dma_fence;

	if (!fence)
		return;

	HWFNC_DBG_H("release backing fence %pK\n", fence);
	hw_dma_fence = to_hw_dma_fence(fence);

	if (test_bit(MSM_HW_FENCE_FLAG_ENABLED_BIT, &fence->flags))
		_hw_fence_release(hw_dma_fence);

	kfree(fence->lock);
	kfree(hw_dma_fence);
}

static struct dma_fence_ops hw_fence_dbg_ops = {
	.get_driver_name = hw_fence_dbg_get_driver_name,
	.get_timeline_name = hw_fence_dbg_get_timeline_name,
	.enable_signaling = hw_fence_dbg_enable_signaling,
	.wait = dma_fence_default_wait,
	.release = hw_fence_dbg_release,
};

#endif /* CONFIG_DEBUG_FS */

#endif /* __HW_FENCE_DRV_DEBUG */