[mirror_ubuntu-artful-kernel.git] / drivers / spi / spi-test.h

/*
 *  linux/drivers/spi/spi-test.h
 *
 *  (c) Martin Sperl <kernel@martin.sperl.org>
 *
 *  spi_test definitions
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  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 <linux/spi/spi.h>

#define SPI_TEST_MAX_TRANSFERS 4
#define SPI_TEST_MAX_SIZE (32 * PAGE_SIZE)
#define SPI_TEST_MAX_ITERATE 32

/* the "dummy" start addresses used in spi_test
 * these addresses get translated at a later stage
 */
#define RX_START	BIT(30)
#define TX_START	BIT(31)
#define RX(off)		((void *)(RX_START + off))
#define TX(off)		((void *)(TX_START + off))

/* some special defines for offsets */
#define SPI_TEST_MAX_SIZE_HALF	BIT(29)

/* detection pattern for unfinished reads...
 * - 0x00 or 0xff could be valid levels for tx_buf = NULL,
 * so we do not use either of them
 */
#define SPI_TEST_PATTERN_UNWRITTEN 0xAA
#define SPI_TEST_PATTERN_DO_NOT_WRITE 0x55
#define SPI_TEST_CHECK_DO_NOT_WRITE 64

/**
 * struct spi_test - describes a specific (set of) tests to execute
 *
 * @description:      description of the test
 *
 * @msg:              a template @spi_message usedfor the default settings
 * @transfers:        array of @spi_transfers that are part of the
 *                    resulting spi_message.
 * @transfer_count:   number of transfers
 *
 * @run_test:         run a specific spi_test - this allows to override
 *                    the default implementation of @spi_test_run_transfer
 *                    either to add some custom filters for a specific test
 *                    or to effectively run some very custom tests...
 * @execute_msg:      run the spi_message for real - this allows to override
 *                    @spi_test_execute_msg to apply final modifications
 *                    on the spi_message
 * @expected_return:  the expected return code - in some cases we want to
 *                    test also for error conditions
 *
 * @iterate_len:      list of length to iterate on
 * @iterate_tx_align: change the alignment of @spi_transfer.tx_buf
 *                    for all values in the below range if set.
 *                    the ranges are:
 *                    [0 : @spi_master.dma_alignment[ if set
 *                    [0 : iterate_tx_align[ if unset
 * @iterate_rx_align: change the alignment of @spi_transfer.rx_buf
 *                    see @iterate_tx_align for details
 * @iterate_transfer_mask: the bitmask of transfers to which the iterations
 *                         apply - if 0, then it applies to all transfer
 *
 * @fill_option:      define the way how tx_buf is filled
 * @fill_pattern:     fill pattern to apply to the tx_buf
 *                    (used in some of the @fill_options)
 * @elapsed_time:     elapsed time in nanoseconds
 */

struct spi_test {
	char description[64];
	struct spi_message msg;
	struct spi_transfer transfers[SPI_TEST_MAX_TRANSFERS];
	unsigned int transfer_count;
	int (*run_test)(struct spi_device *spi, struct spi_test *test,
			void *tx, void *rx);
	int (*execute_msg)(struct spi_device *spi, struct spi_test *test,
			   void *tx, void *rx);
	int expected_return;
	/* iterate over all values, terminated by a -1 */
	int iterate_len[SPI_TEST_MAX_ITERATE];
	int iterate_tx_align;
	int iterate_rx_align;
	u32 iterate_transfer_mask;
	/* the tx-fill operation */
	u32 fill_option;
#define FILL_MEMSET_8	0	/* just memset with 8 bit */
#define FILL_MEMSET_16	1	/* just memset with 16 bit */
#define FILL_MEMSET_24	2	/* just memset with 24 bit */
#define FILL_MEMSET_32	3	/* just memset with 32 bit */
#define FILL_COUNT_8	4	/* fill with a 8 byte counter */
#define FILL_COUNT_16	5	/* fill with a 16 bit counter */
#define FILL_COUNT_24	6	/* fill with a 24 bit counter */
#define FILL_COUNT_32	7	/* fill with a 32 bit counter */
#define FILL_TRANSFER_BYTE_8  8	/* fill with the transfer byte - 8 bit */
#define FILL_TRANSFER_BYTE_16 9	/* fill with the transfer byte - 16 bit */
#define FILL_TRANSFER_BYTE_24 10 /* fill with the transfer byte - 24 bit */
#define FILL_TRANSFER_BYTE_32 11 /* fill with the transfer byte - 32 bit */
#define FILL_TRANSFER_NUM     16 /* fill with the transfer number */
	u32 fill_pattern;
	unsigned long long elapsed_time;
};

/* default implementation for @spi_test.run_test */
int spi_test_run_test(struct spi_device *spi,
		      const struct spi_test *test,
		      void *tx, void *rx);

/* default implementation for @spi_test.execute_msg */
int spi_test_execute_msg(struct spi_device *spi,
			 struct spi_test *test,
			 void *tx, void *rx);

/* function to execute a set of tests */
int spi_test_run_tests(struct spi_device *spi,
		       struct spi_test *tests);

#define ITERATE_LEN_LIST 0, 1, 2, 3, 7, 11, 16, 31, 32, 64, 97, 128, 251, 256, \
		1021, 1024, 1031, 4093, PAGE_SIZE, 4099, 65536, 65537
/* some of the default @spi_transfer.len to test, terminated by a -1 */
#define ITERATE_LEN ITERATE_LEN_LIST, -1
#define ITERATE_MAX_LEN ITERATE_LEN_LIST, (SPI_TEST_MAX_SIZE - 1), \
		SPI_TEST_MAX_SIZE, -1

/* the default alignment to test */
#define ITERATE_ALIGN sizeof(int)
Commit	Line	Data
84e0c4e5 MS	1	/*
	2	* linux/drivers/spi/spi-test.h
	3	*
	4	* (c) Martin Sperl <kernel@martin.sperl.org>
	5	*
	6	* spi_test definitions
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation; either version 2 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*/
	18
	19	#include <linux/spi/spi.h>
	20
	21	#define SPI_TEST_MAX_TRANSFERS 4
	22	#define SPI_TEST_MAX_SIZE (32 * PAGE_SIZE)
739f3e92	23	#define SPI_TEST_MAX_ITERATE 32
84e0c4e5 MS	24
	25	/* the "dummy" start addresses used in spi_test
	26	* these addresses get translated at a later stage
	27	*/
	28	#define RX_START BIT(30)
	29	#define TX_START BIT(31)
	30	#define RX(off) ((void *)(RX_START + off))
	31	#define TX(off) ((void *)(TX_START + off))
	32
	33	/* some special defines for offsets */
	34	#define SPI_TEST_MAX_SIZE_HALF BIT(29)
	35
	36	/* detection pattern for unfinished reads...
	37	* - 0x00 or 0xff could be valid levels for tx_buf = NULL,
	38	* so we do not use either of them
	39	*/
	40	#define SPI_TEST_PATTERN_UNWRITTEN 0xAA
	41	#define SPI_TEST_PATTERN_DO_NOT_WRITE 0x55
	42	#define SPI_TEST_CHECK_DO_NOT_WRITE 64
	43
	44	/**
	45	* struct spi_test - describes a specific (set of) tests to execute
	46	*
	47	* @description: description of the test
	48	*
	49	* @msg: a template @spi_message usedfor the default settings
	50	* @transfers: array of @spi_transfers that are part of the
8916671e AM	51	* resulting spi_message.
8916671e AM	52	* @transfer_count: number of transfers
84e0c4e5 MS	53	*
	54	* @run_test: run a specific spi_test - this allows to override
	55	* the default implementation of @spi_test_run_transfer
	56	* either to add some custom filters for a specific test
	57	* or to effectively run some very custom tests...
	58	* @execute_msg: run the spi_message for real - this allows to override
	59	* @spi_test_execute_msg to apply final modifications
	60	* on the spi_message
	61	* @expected_return: the expected return code - in some cases we want to
	62	* test also for error conditions
	63	*
8916671e	64	* @iterate_len: list of length to iterate on
84e0c4e5 MS	65	* @iterate_tx_align: change the alignment of @spi_transfer.tx_buf
	66	* for all values in the below range if set.
	67	* the ranges are:
	68	* [0 : @spi_master.dma_alignment[ if set
	69	* [0 : iterate_tx_align[ if unset
	70	* @iterate_rx_align: change the alignment of @spi_transfer.rx_buf
	71	* see @iterate_tx_align for details
	72	* @iterate_transfer_mask: the bitmask of transfers to which the iterations
	73	* apply - if 0, then it applies to all transfer
	74	*
	75	* @fill_option: define the way how tx_buf is filled
	76	* @fill_pattern: fill pattern to apply to the tx_buf
	77	* (used in some of the @fill_options)
ea9936f3	78	* @elapsed_time: elapsed time in nanoseconds
84e0c4e5 MS	79	*/
	80
	81	struct spi_test {
	82	char description[64];
	83	struct spi_message msg;
	84	struct spi_transfer transfers[SPI_TEST_MAX_TRANSFERS];
	85	unsigned int transfer_count;
	86	int (run_test)(struct spi_device spi, struct spi_test *test,
	87	void tx, void rx);
	88	int (execute_msg)(struct spi_device spi, struct spi_test *test,
	89	void tx, void rx);
	90	int expected_return;
8916671e	91	/* iterate over all values, terminated by a -1 */
84e0c4e5 MS	92	int iterate_len[SPI_TEST_MAX_ITERATE];
	93	int iterate_tx_align;
	94	int iterate_rx_align;
	95	u32 iterate_transfer_mask;
	96	/* the tx-fill operation */
	97	u32 fill_option;
	98	#define FILL_MEMSET_8 0 /* just memset with 8 bit */
	99	#define FILL_MEMSET_16 1 /* just memset with 16 bit */
	100	#define FILL_MEMSET_24 2 /* just memset with 24 bit */
	101	#define FILL_MEMSET_32 3 /* just memset with 32 bit */
	102	#define FILL_COUNT_8 4 /* fill with a 8 byte counter */
	103	#define FILL_COUNT_16 5 /* fill with a 16 bit counter */
	104	#define FILL_COUNT_24 6 /* fill with a 24 bit counter */
	105	#define FILL_COUNT_32 7 /* fill with a 32 bit counter */
	106	#define FILL_TRANSFER_BYTE_8 8 /* fill with the transfer byte - 8 bit */
	107	#define FILL_TRANSFER_BYTE_16 9 /* fill with the transfer byte - 16 bit */
	108	#define FILL_TRANSFER_BYTE_24 10 /* fill with the transfer byte - 24 bit */
	109	#define FILL_TRANSFER_BYTE_32 11 /* fill with the transfer byte - 32 bit */
	110	#define FILL_TRANSFER_NUM 16 /* fill with the transfer number */
	111	u32 fill_pattern;
ea9936f3	112	unsigned long long elapsed_time;
84e0c4e5 MS	113	};
	114
	115	/* default implementation for @spi_test.run_test */
	116	int spi_test_run_test(struct spi_device *spi,
	117	const struct spi_test *test,
	118	void tx, void rx);
	119
	120	/* default implementation for @spi_test.execute_msg */
	121	int spi_test_execute_msg(struct spi_device *spi,
	122	struct spi_test *test,
	123	void tx, void rx);
	124
	125	/* function to execute a set of tests */
	126	int spi_test_run_tests(struct spi_device *spi,
	127	struct spi_test *tests);
	128
0bd7fda5	129	#define ITERATE_LEN_LIST 0, 1, 2, 3, 7, 11, 16, 31, 32, 64, 97, 128, 251, 256, \
739f3e92	130	1021, 1024, 1031, 4093, PAGE_SIZE, 4099, 65536, 65537
8916671e AM	131	/* some of the default @spi_transfer.len to test, terminated by a -1 */
	132	#define ITERATE_LEN ITERATE_LEN_LIST, -1
	133	#define ITERATE_MAX_LEN ITERATE_LEN_LIST, (SPI_TEST_MAX_SIZE - 1), \
	134	SPI_TEST_MAX_SIZE, -1
84e0c4e5 MS	135
	136	/* the default alignment to test */
	137	#define ITERATE_ALIGN sizeof(int)