[people/ms/u-boot.git] / common / fpga.c

/*
 * (C) Copyright 2002
 * Rich Ireland, Enterasys Networks, rireland@enterasys.com.
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 *
 */

/*
 *  Generic FPGA support
 */
#include <common.h>             /* core U-Boot definitions */
#include <xilinx.h>             /* xilinx specific definitions */
#include <altera.h>             /* altera specific definitions */

#if defined(CONFIG_FPGA)

#if 0
#define FPGA_DEBUG              /* define FPGA_DEBUG to get debug messages */
#endif

/* Local definitions */
#ifndef CONFIG_MAX_FPGA_DEVICES
#define CONFIG_MAX_FPGA_DEVICES		5
#endif

/* Enable/Disable debug console messages */
#ifdef FPGA_DEBUG
#define	PRINTF(fmt,args...)	printf (fmt ,##args)
#else
#define	PRINTF(fmt,args...)
#endif

/* Local static data */
static ulong relocation_offset = 0;
static int next_desc = FPGA_INVALID_DEVICE;
static fpga_desc desc_table[CONFIG_MAX_FPGA_DEVICES];

/* Local static functions */
static __attribute__((__const__)) fpga_desc * __attribute__((__const__)) fpga_get_desc( int devnum );
static __attribute__((__const__)) fpga_desc * __attribute__((__const__)) fpga_validate( int devnum, void *buf,
					 size_t bsize, char *fn );
static int fpga_dev_info( int devnum );


/* ------------------------------------------------------------------------- */

/* fpga_no_sup
 * 'no support' message function
 */
static void fpga_no_sup( char *fn, char *msg )
{
	if ( fn && msg ) {
		printf( "%s: No support for %s.\n", fn, msg);
	} else if ( msg ) {
		printf( "No support for %s.\n", msg);
	} else {
		printf( "No FPGA suport!\n");
	}
}


/* fpga_get_desc
 *	map a device number to a descriptor
 */
static __attribute__((__const__)) fpga_desc * __attribute__((__const__)) fpga_get_desc( int devnum )
{
	fpga_desc *desc = (fpga_desc * )NULL;

	if (( devnum >= 0 ) && (devnum < next_desc )) {
		desc = &desc_table[devnum];
		PRINTF( "%s: found fpga descriptor #%d @ 0x%p\n",
				__FUNCTION__, devnum, desc );
	}

	return desc;
}


/* fpga_validate
 *	generic parameter checking code
 */
static __attribute__((__const__)) fpga_desc * __attribute__((__const__)) fpga_validate( int devnum, void *buf,
					 size_t bsize, char *fn )
{
	fpga_desc * desc = fpga_get_desc( devnum );

	if ( !desc ) {
		printf( "%s: Invalid device number %d\n", fn, devnum );
	}

	if ( !buf ) {
		printf( "%s: Null buffer.\n", fn );
		return (fpga_desc * const)NULL;
	}
	return desc;
}


/* fpga_dev_info
 *	generic multiplexing code
 */
static int fpga_dev_info( int devnum )
{
	int ret_val = FPGA_FAIL;           /* assume failure */
	const fpga_desc * const desc = fpga_get_desc( devnum );

	if ( desc ) {
		PRINTF( "%s: Device Descriptor @ 0x%p\n",
				__FUNCTION__, desc->devdesc );

		switch ( desc->devtype ) {
		case fpga_xilinx:
#if defined(CONFIG_FPGA_XILINX)
			printf( "Xilinx Device\nDescriptor @ 0x%p\n", desc );
			ret_val = xilinx_info( desc->devdesc );
#else
			fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" );
#endif
			break;
		case fpga_altera:
#if defined(CONFIG_FPGA_ALTERA)
			printf( "Altera Device\nDescriptor @ 0x%p\n", desc );
			ret_val = altera_info( desc->devdesc );
#else
			fpga_no_sup( (char *)__FUNCTION__, "Altera devices" );
#endif
			break;
		default:
			printf( "%s: Invalid or unsupported device type %d\n",
					__FUNCTION__, desc->devtype );
		}
	} else {
		printf( "%s: Invalid device number %d\n",
			__FUNCTION__, devnum );
	}

	return ret_val;
}


/* fpga_reloc
 *	generic multiplexing code
 */
int fpga_reloc( fpga_type devtype, void *desc, ulong reloc_off )
{
	int ret_val = FPGA_FAIL;

	PRINTF( "%s: Relocating Device of type %d @ 0x%p with offset %lx\n",
				__FUNCTION__, devtype, desc, reloc_off );

	switch ( devtype ) {
	case fpga_xilinx:
#if defined(CONFIG_FPGA_XILINX)
		ret_val = xilinx_reloc( desc, reloc_off );
#else
		fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" );
#endif
		break;
	case fpga_altera:
#if defined(CONFIG_FPGA_ALTERA)
		ret_val = altera_reloc( desc, reloc_off );
#else
		fpga_no_sup( (char *)__FUNCTION__, "Altera devices" );
#endif
		break;
	default:
		printf( "%s: Invalid or unsupported device type %d\n",
			__FUNCTION__, devtype );
	}

	return ret_val;
}

/* ------------------------------------------------------------------------- */
/* fgpa_init is usually called from misc_init_r() and MUST be called
 * before any of the other fpga functions are used.
 */
void fpga_init( ulong reloc_off )
{
	relocation_offset = reloc_off;
	next_desc = 0;
	memset( desc_table, 0, sizeof(desc_table));

	PRINTF( "%s: CONFIG_FPGA = 0x%x\n", __FUNCTION__, CONFIG_FPGA );
}

/* fpga_count
 * Basic interface function to get the current number of devices available.
 */
int fpga_count( void )
{
	return next_desc;
}

/* fpga_add
 *	Attempts to relocate the device/board specific interface code
 *	to the proper RAM locations and adds the device descriptor to
 *	the device table.
 */
int fpga_add( fpga_type devtype, void *desc )
{
	int devnum = FPGA_INVALID_DEVICE;

	if ( next_desc  < 0 ) {
		printf( "%s: FPGA support not initialized!\n", __FUNCTION__ );
	} else if (( devtype > fpga_min_type ) && ( devtype < fpga_undefined )) {
		if ( desc ) {
			if ( next_desc < CONFIG_MAX_FPGA_DEVICES ) {
				if ( fpga_reloc( devtype, desc, relocation_offset )
				  == FPGA_SUCCESS ) {
					devnum = next_desc;
					desc_table[next_desc].devtype = devtype;
					desc_table[next_desc++].devdesc = desc;
				} else {
					printf( "%s: Unable to relocate device interface table!\n",
						__FUNCTION__ );
				}
			} else {
				printf( "%s: Exceeded Max FPGA device count\n", __FUNCTION__ );
			}
		} else {
			printf( "%s: NULL device descriptor\n", __FUNCTION__ );
		}
	} else {
		printf( "%s: Unsupported FPGA type %d\n", __FUNCTION__, devtype );
	}

	return devnum;
}

/*
 *	Generic multiplexing code
 */
int fpga_load( int devnum, void *buf, size_t bsize )
{
	int ret_val = FPGA_FAIL;           /* assume failure */
	fpga_desc * desc = fpga_validate( devnum, buf, bsize, (char *)__FUNCTION__ );

	if ( desc ) {
		switch ( desc->devtype ) {
		case fpga_xilinx:
#if defined(CONFIG_FPGA_XILINX)
			ret_val = xilinx_load( desc->devdesc, buf, bsize );
#else
			fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" );
#endif
			break;
		case fpga_altera:
#if defined(CONFIG_FPGA_ALTERA)
			ret_val = altera_load( desc->devdesc, buf, bsize );
#else
			fpga_no_sup( (char *)__FUNCTION__, "Altera devices" );
#endif
			break;
		default:
			printf( "%s: Invalid or unsupported device type %d\n",
				__FUNCTION__, desc->devtype );
		}
	}

	return ret_val;
}

/* fpga_dump
 *	generic multiplexing code
 */
int fpga_dump( int devnum, void *buf, size_t bsize )
{
	int ret_val = FPGA_FAIL;           /* assume failure */
	fpga_desc * desc = fpga_validate( devnum, buf, bsize, (char *)__FUNCTION__ );

	if ( desc ) {
		switch ( desc->devtype ) {
		case fpga_xilinx:
#if defined(CONFIG_FPGA_XILINX)
			ret_val = xilinx_dump( desc->devdesc, buf, bsize );
#else
			fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" );
#endif
			break;
		case fpga_altera:
#if defined(CONFIG_FPGA_ALTERA)
			ret_val = altera_dump( desc->devdesc, buf, bsize );
#else
			fpga_no_sup( (char *)__FUNCTION__, "Altera devices" );
#endif
			break;
		default:
			printf( "%s: Invalid or unsupported device type %d\n",
				__FUNCTION__, desc->devtype );
		}
	}

	return ret_val;
}


/* fpga_info
 *	front end to fpga_dev_info.  If devnum is invalid, report on all
 *	available devices.
 */
int fpga_info( int devnum )
{
	if ( devnum == FPGA_INVALID_DEVICE ) {
		if ( next_desc > 0 ) {
			int dev;

			for ( dev = 0; dev < next_desc; dev++ ) {
				fpga_dev_info( dev );
			}
			return FPGA_SUCCESS;
		} else {
			printf( "%s: No FPGA devices available.\n", __FUNCTION__ );
			return FPGA_FAIL;
		}
	}
	else return fpga_dev_info( devnum );
}

/* ------------------------------------------------------------------------- */

#endif  /* CONFIG_FPGA */
Commit	Line	Data
e2211743 WD	1	/*
	2	* (C) Copyright 2002
	3	* Rich Ireland, Enterasys Networks, rireland@enterasys.com.
	4	*
	5	* See file CREDITS for list of people who contributed to this
	6	* project.
	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License as
	10	* published by the Free Software Foundation; either version 2 of
	11	* the License, or (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	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
	21	* MA 02111-1307 USA
	22	*
	23	*/
	24
	25	/*
	26	* Generic FPGA support
	27	*/
	28	#include <common.h> /* core U-Boot definitions */
	29	#include <xilinx.h> /* xilinx specific definitions */
	30	#include <altera.h> /* altera specific definitions */
	31
	32	#if defined(CONFIG_FPGA)
	33
	34	#if 0
	35	#define FPGA_DEBUG /* define FPGA_DEBUG to get debug messages */
	36	#endif
	37
	38	/* Local definitions */
	39	#ifndef CONFIG_MAX_FPGA_DEVICES
	40	#define CONFIG_MAX_FPGA_DEVICES 5
	41	#endif
	42
	43	/* Enable/Disable debug console messages */
	44	#ifdef FPGA_DEBUG
	45	#define PRINTF(fmt,args...) printf (fmt ,##args)
	46	#else
	47	#define PRINTF(fmt,args...)
	48	#endif
	49
	50	/* Local static data */
	51	static ulong relocation_offset = 0;
	52	static int next_desc = FPGA_INVALID_DEVICE;
	53	static fpga_desc desc_table[CONFIG_MAX_FPGA_DEVICES];
	54
	55	/* Local static functions */
77ddac94 WD	56	static __attribute__((__const__)) fpga_desc * __attribute__((__const__)) fpga_get_desc( int devnum );
77ddac94 WD	57	static __attribute__((__const__)) fpga_desc * __attribute__((__const__)) fpga_validate( int devnum, void *buf,
8bde7f77	58	size_t bsize, char *fn );
e2211743 WD	59	static int fpga_dev_info( int devnum );
	60
	61
	62	/* ------------------------------------------------------------------------- */
	63
	64	/* fpga_no_sup
	65	* 'no support' message function
	66	*/
	67	static void fpga_no_sup( char fn, char msg )
	68	{
	69	if ( fn && msg ) {
0133502e	70	printf( "%s: No support for %s.\n", fn, msg);
e2211743	71	} else if ( msg ) {
0133502e	72	printf( "No support for %s.\n", msg);
e2211743	73	} else {
0133502e	74	printf( "No FPGA suport!\n");
e2211743 WD	75	}
	76	}
	77
	78
	79	/* fpga_get_desc
	80	* map a device number to a descriptor
	81	*/
77ddac94	82	static __attribute__((__const__)) fpga_desc * __attribute__((__const__)) fpga_get_desc( int devnum )
e2211743 WD	83	{
	84	fpga_desc desc = (fpga_desc )NULL;
	85
	86	if (( devnum >= 0 ) && (devnum < next_desc )) {
	87	desc = &desc_table[devnum];
	88	PRINTF( "%s: found fpga descriptor #%d @ 0x%p\n",
	89	__FUNCTION__, devnum, desc );
	90	}
	91
	92	return desc;
	93	}
	94
	95
	96	/* fpga_validate
	97	* generic parameter checking code
	98	*/
77ddac94	99	static __attribute__((__const__)) fpga_desc * __attribute__((__const__)) fpga_validate( int devnum, void *buf,
8bde7f77	100	size_t bsize, char *fn )
e2211743	101	{
77ddac94	102	fpga_desc * desc = fpga_get_desc( devnum );
e2211743 WD	103
	104	if ( !desc ) {
	105	printf( "%s: Invalid device number %d\n", fn, devnum );
	106	}
	107
	108	if ( !buf ) {
	109	printf( "%s: Null buffer.\n", fn );
	110	return (fpga_desc * const)NULL;
	111	}
e2211743 WD	112	return desc;
	113	}
	114
	115
	116	/* fpga_dev_info
	117	* generic multiplexing code
	118	*/
	119	static int fpga_dev_info( int devnum )
	120	{
	121	int ret_val = FPGA_FAIL; /* assume failure */
	122	const fpga_desc * const desc = fpga_get_desc( devnum );
	123
	124	if ( desc ) {
	125	PRINTF( "%s: Device Descriptor @ 0x%p\n",
	126	__FUNCTION__, desc->devdesc );
	127
	128	switch ( desc->devtype ) {
	129	case fpga_xilinx:
0133502e	130	#if defined(CONFIG_FPGA_XILINX)
e2211743 WD	131	printf( "Xilinx Device\nDescriptor @ 0x%p\n", desc );
	132	ret_val = xilinx_info( desc->devdesc );
	133	#else
64cd52ef	134	fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" );
e2211743 WD	135	#endif
	136	break;
	137	case fpga_altera:
0133502e	138	#if defined(CONFIG_FPGA_ALTERA)
e2211743 WD	139	printf( "Altera Device\nDescriptor @ 0x%p\n", desc );
	140	ret_val = altera_info( desc->devdesc );
	141	#else
77ddac94	142	fpga_no_sup( (char *)__FUNCTION__, "Altera devices" );
e2211743 WD	143	#endif
	144	break;
	145	default:
	146	printf( "%s: Invalid or unsupported device type %d\n",
	147	__FUNCTION__, desc->devtype );
	148	}
	149	} else {
	150	printf( "%s: Invalid device number %d\n",
	151	__FUNCTION__, devnum );
	152	}
	153
	154	return ret_val;
	155	}
	156
	157
	158	/* fpga_reloc
	159	* generic multiplexing code
	160	*/
	161	int fpga_reloc( fpga_type devtype, void *desc, ulong reloc_off )
	162	{
	163	int ret_val = FPGA_FAIL;
	164
	165	PRINTF( "%s: Relocating Device of type %d @ 0x%p with offset %lx\n",
	166	__FUNCTION__, devtype, desc, reloc_off );
	167
	168	switch ( devtype ) {
	169	case fpga_xilinx:
0133502e	170	#if defined(CONFIG_FPGA_XILINX)
e2211743 WD	171	ret_val = xilinx_reloc( desc, reloc_off );
e2211743 WD	172	#else
64cd52ef	173	fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" );
e2211743 WD	174	#endif
	175	break;
	176	case fpga_altera:
0133502e	177	#if defined(CONFIG_FPGA_ALTERA)
e2211743 WD	178	ret_val = altera_reloc( desc, reloc_off );
e2211743 WD	179	#else
77ddac94	180	fpga_no_sup( (char *)__FUNCTION__, "Altera devices" );
e2211743 WD	181	#endif
	182	break;
	183	default:
	184	printf( "%s: Invalid or unsupported device type %d\n",
	185	__FUNCTION__, devtype );
	186	}
	187
	188	return ret_val;
	189	}
	190
	191	/* ------------------------------------------------------------------------- */
	192	/* fgpa_init is usually called from misc_init_r() and MUST be called
	193	* before any of the other fpga functions are used.
	194	*/
	195	void fpga_init( ulong reloc_off )
	196	{
	197	relocation_offset = reloc_off;
	198	next_desc = 0;
	199	memset( desc_table, 0, sizeof(desc_table));
	200
	201	PRINTF( "%s: CONFIG_FPGA = 0x%x\n", __FUNCTION__, CONFIG_FPGA );
e2211743 WD	202	}
	203
	204	/* fpga_count
	205	* Basic interface function to get the current number of devices available.
	206	*/
77ddac94	207	int fpga_count( void )
e2211743 WD	208	{
	209	return next_desc;
	210	}
	211
	212	/* fpga_add
	213	* Attempts to relocate the device/board specific interface code
	214	* to the proper RAM locations and adds the device descriptor to
	215	* the device table.
	216	*/
	217	int fpga_add( fpga_type devtype, void *desc )
	218	{
	219	int devnum = FPGA_INVALID_DEVICE;
	220
	221	if ( next_desc < 0 ) {
	222	printf( "%s: FPGA support not initialized!\n", __FUNCTION__ );
	223	} else if (( devtype > fpga_min_type ) && ( devtype < fpga_undefined )) {
	224	if ( desc ) {
	225	if ( next_desc < CONFIG_MAX_FPGA_DEVICES ) {
	226	if ( fpga_reloc( devtype, desc, relocation_offset )
	227	== FPGA_SUCCESS ) {
	228	devnum = next_desc;
	229	desc_table[next_desc].devtype = devtype;
	230	desc_table[next_desc++].devdesc = desc;
	231	} else {
	232	printf( "%s: Unable to relocate device interface table!\n",
	233	__FUNCTION__ );
	234	}
	235	} else {
	236	printf( "%s: Exceeded Max FPGA device count\n", __FUNCTION__ );
	237	}
	238	} else {
	239	printf( "%s: NULL device descriptor\n", __FUNCTION__ );
	240	}
	241	} else {
	242	printf( "%s: Unsupported FPGA type %d\n", __FUNCTION__, devtype );
	243	}
	244
	245	return devnum;
	246	}
	247
	248	/*
	249	* Generic multiplexing code
	250	*/
	251	int fpga_load( int devnum, void *buf, size_t bsize )
	252	{
	253	int ret_val = FPGA_FAIL; /* assume failure */
77ddac94	254	fpga_desc * desc = fpga_validate( devnum, buf, bsize, (char *)__FUNCTION__ );
e2211743 WD	255
	256	if ( desc ) {
	257	switch ( desc->devtype ) {
	258	case fpga_xilinx:
0133502e	259	#if defined(CONFIG_FPGA_XILINX)
e2211743 WD	260	ret_val = xilinx_load( desc->devdesc, buf, bsize );
e2211743 WD	261	#else
64cd52ef	262	fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" );
e2211743 WD	263	#endif
	264	break;
	265	case fpga_altera:
0133502e	266	#if defined(CONFIG_FPGA_ALTERA)
e2211743 WD	267	ret_val = altera_load( desc->devdesc, buf, bsize );
e2211743 WD	268	#else
77ddac94	269	fpga_no_sup( (char *)__FUNCTION__, "Altera devices" );
e2211743 WD	270	#endif
	271	break;
	272	default:
	273	printf( "%s: Invalid or unsupported device type %d\n",
	274	__FUNCTION__, desc->devtype );
	275	}
	276	}
	277
	278	return ret_val;
	279	}
	280
	281	/* fpga_dump
	282	* generic multiplexing code
	283	*/
	284	int fpga_dump( int devnum, void *buf, size_t bsize )
	285	{
	286	int ret_val = FPGA_FAIL; /* assume failure */
77ddac94	287	fpga_desc * desc = fpga_validate( devnum, buf, bsize, (char *)__FUNCTION__ );
e2211743 WD	288
	289	if ( desc ) {
	290	switch ( desc->devtype ) {
	291	case fpga_xilinx:
0133502e	292	#if defined(CONFIG_FPGA_XILINX)
e2211743 WD	293	ret_val = xilinx_dump( desc->devdesc, buf, bsize );
e2211743 WD	294	#else
64cd52ef	295	fpga_no_sup( (char *)__FUNCTION__, "Xilinx devices" );
e2211743 WD	296	#endif
	297	break;
	298	case fpga_altera:
0133502e	299	#if defined(CONFIG_FPGA_ALTERA)
e2211743 WD	300	ret_val = altera_dump( desc->devdesc, buf, bsize );
e2211743 WD	301	#else
77ddac94	302	fpga_no_sup( (char *)__FUNCTION__, "Altera devices" );
e2211743 WD	303	#endif
	304	break;
	305	default:
	306	printf( "%s: Invalid or unsupported device type %d\n",
	307	__FUNCTION__, desc->devtype );
	308	}
	309	}
	310
	311	return ret_val;
	312	}
	313
	314
	315	/* fpga_info
	316	* front end to fpga_dev_info. If devnum is invalid, report on all
	317	* available devices.
	318	*/
	319	int fpga_info( int devnum )
	320	{
	321	if ( devnum == FPGA_INVALID_DEVICE ) {
	322	if ( next_desc > 0 ) {
	323	int dev;
	324
	325	for ( dev = 0; dev < next_desc; dev++ ) {
	326	fpga_dev_info( dev );
	327	}
	328	return FPGA_SUCCESS;
	329	} else {
	330	printf( "%s: No FPGA devices available.\n", __FUNCTION__ );
	331	return FPGA_FAIL;
	332	}
	333	}
	334	else return fpga_dev_info( devnum );
	335	}
	336
	337	/* ------------------------------------------------------------------------- */
	338
	339	#endif /* CONFIG_FPGA */