/*
 * Copyright (c) 2013 Google, Inc.
 *
 * SPDX-License-Identifier:     GPL-2.0+
 */

#ifndef __DM_TEST_H
#define __DM_TEST_H

#include <dm.h>
#include <test/test.h>

/**
 * struct dm_test_cdata - configuration data for test instance
 *
 * @ping_add: Amonut to add each time we get a ping
 * @base: Base address of this device
 */
struct dm_test_pdata {
        int ping_add;
        uint32_t base;
};

/**
 * struct test_ops - Operations supported by the test device
 *
 * @ping: Ping operation
 *      @dev: Device to operate on
 *      @pingval: Value to ping the device with
 *      @pingret: Returns resulting value from driver
 *      @return 0 if OK, -ve on error
 */
struct test_ops {
        int (*ping)(struct udevice *dev, int pingval, int *pingret);
};

/* Operations that our test driver supports */
enum {
        DM_TEST_OP_BIND = 0,
        DM_TEST_OP_UNBIND,
        DM_TEST_OP_PROBE,
        DM_TEST_OP_REMOVE,

        /* For uclass */
        DM_TEST_OP_POST_BIND,
        DM_TEST_OP_PRE_UNBIND,
        DM_TEST_OP_PRE_PROBE,
        DM_TEST_OP_POST_PROBE,
        DM_TEST_OP_PRE_REMOVE,
        DM_TEST_OP_INIT,
        DM_TEST_OP_DESTROY,

        DM_TEST_OP_COUNT,
};

/* Test driver types */
enum {
        DM_TEST_TYPE_FIRST = 0,
        DM_TEST_TYPE_SECOND,
};

/* The number added to the ping total on each probe */
#define DM_TEST_START_TOTAL     5

/**
 * struct dm_test_priv - private data for the test devices
 */
struct dm_test_priv {
        int ping_total;
        int op_count[DM_TEST_OP_COUNT];
        int uclass_flag;
        int uclass_total;
};

/**
 * struct dm_test_perdev_class_priv - private per-device data for test uclass
 */
struct dm_test_uclass_perdev_priv {
        int base_add;
};

/**
 * struct dm_test_uclass_priv - private data for test uclass
 */
struct dm_test_uclass_priv {
        int total_add;
};

/**
 * struct dm_test_parent_data - parent's information on each child
 *
 * @sum: Test value used to check parent data works correctly
 * @flag: Used to track calling of parent operations
 * @uclass_flag: Used to track calling of parent operations by uclass
 */
struct dm_test_parent_data {
        int sum;
        int flag;
};

/* Test values for test device's uclass platform data */
enum {
        TEST_UC_PDATA_INTVAL1 = 2,
        TEST_UC_PDATA_INTVAL2 = 334,
        TEST_UC_PDATA_INTVAL3 = 789452,
};

/**
 * struct dm_test_uclass_platda - uclass's information on each device
 *
 * @intval1: set to TEST_UC_PDATA_INTVAL1 in .post_bind method of test uclass
 * @intval2: set to TEST_UC_PDATA_INTVAL2 in .post_bind method of test uclass
 * @intval3: set to TEST_UC_PDATA_INTVAL3 in .post_bind method of test uclass
 */
struct dm_test_perdev_uc_pdata {
        int intval1;
        int intval2;
        int intval3;
};

/*
 * Operation counts for the test driver, used to check that each method is
 * called correctly
 */
extern int dm_testdrv_op_count[DM_TEST_OP_COUNT];

extern struct unit_test_state global_dm_test_state;

/*
 * struct dm_test_state - Entire state of dm test system
 *
 * This is often abreviated to dms.
 *
 * @root: Root device
 * @testdev: Test device
 * @force_fail_alloc: Force all memory allocs to fail
 * @skip_post_probe: Skip uclass post-probe processing
 * @removed: Used to keep track of a device that was removed
 */
struct dm_test_state {
        struct udevice *root;
        struct udevice *testdev;
        int force_fail_alloc;
        int skip_post_probe;
        struct udevice *removed;
};

/* Test flags for each test */
enum {
        DM_TESTF_SCAN_PDATA     = 1 << 0,       /* test needs platform data */
        DM_TESTF_PROBE_TEST     = 1 << 1,       /* probe test uclass */
        DM_TESTF_SCAN_FDT       = 1 << 2,       /* scan device tree */
        DM_TESTF_FLAT_TREE      = 1 << 3,       /* test needs flat DT */
        DM_TESTF_LIVE_TREE      = 1 << 4,       /* needs live device tree */
};

/* Declare a new driver model test */
#define DM_TEST(_name, _flags)  UNIT_TEST(_name, _flags, dm_test)

/* This platform data is needed in tests, so declare it here */
struct sandbox_sdl_plat {
        int xres;
        int yres;
        int bpix;
        int rot;
        const char *vidconsole_drv_name;
        int font_size;
};

/* Declare ping methods for the drivers */
int test_ping(struct udevice *dev, int pingval, int *pingret);
int testfdt_ping(struct udevice *dev, int pingval, int *pingret);

/**
 * dm_check_operations() - Check that we can perform ping operations
 *
 * This checks that the ping operations work as expected for a device
 *
 * @dms: Overall test state
 * @dev: Device to test
 * @base: Base address, used to check ping return value
 * @priv: Pointer to private test information
 * @return 0 if OK, -ve on error
 */
int dm_check_operations(struct unit_test_state *uts, struct udevice *dev,
                        uint32_t base, struct dm_test_priv *priv);

/**
 * dm_check_devices() - check the devices respond to operations correctly
 *
 * @dms: Overall test state
 * @num_devices: Number of test devices to check
 * @return 0 if OK, -ve on error
 */
int dm_check_devices(struct unit_test_state *uts, int num_devices);

/**
 * dm_leak_check_start() - Prepare to check for a memory leak
 *
 * Call this before allocating memory to record the amount of memory being
 * used.
 *
 * @dms: Overall test state
 */
void dm_leak_check_start(struct unit_test_state *uts);

/**
 * dm_leak_check_end() - Check that no memory has leaked
 *
 * Call this after dm_leak_check_start() and after you have hopefuilly freed
 * all the memory that was allocated. This function will print an error if
 * it sees a different amount of total memory allocated than before.
 *
 * @dms: Overall test state
 */int dm_leak_check_end(struct unit_test_state *uts);

#endif