[mirror_ubuntu-jammy-kernel.git] / drivers / mtd / maps / fortunet.c

/* fortunet.c memory map
 *
 * $Id: fortunet.c,v 1.11 2005/11/07 11:14:27 gleixner Exp $
 */

#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/string.h>

#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/partitions.h>

#include <asm/io.h>

#define MAX_NUM_REGIONS		4
#define MAX_NUM_PARTITIONS	8

#define DEF_WINDOW_ADDR_PHY	0x00000000
#define DEF_WINDOW_SIZE		0x00800000		// 8 Mega Bytes

#define MTD_FORTUNET_PK		"MTD FortuNet: "

#define MAX_NAME_SIZE		128

struct map_region
{
	int			window_addr_physical;
	int			altbankwidth;
	struct map_info		map_info;
	struct mtd_info		*mymtd;
	struct mtd_partition	parts[MAX_NUM_PARTITIONS];
	char			map_name[MAX_NAME_SIZE];
	char			parts_name[MAX_NUM_PARTITIONS][MAX_NAME_SIZE];
};

static struct map_region	map_regions[MAX_NUM_REGIONS];
static int			map_regions_set[MAX_NUM_REGIONS] = {0,0,0,0};
static int			map_regions_parts[MAX_NUM_REGIONS] = {0,0,0,0};


struct map_info default_map = {
	.size = DEF_WINDOW_SIZE,
	.bankwidth = 4,
};

static char * __init get_string_option(char *dest,int dest_size,char *sor)
{
	if(!dest_size)
		return sor;
	dest_size--;
	while(*sor)
	{
		if(*sor==',')
		{
			sor++;
			break;
		}
		else if(*sor=='\"')
		{
			sor++;
			while(*sor)
			{
				if(*sor=='\"')
				{
					sor++;
					break;
				}
				*dest = *sor;
				dest++;
				sor++;
				dest_size--;
				if(!dest_size)
				{
					*dest = 0;
					return sor;
				}
			}
		}
		else
		{
			*dest = *sor;
			dest++;
			sor++;
			dest_size--;
			if(!dest_size)
			{
				*dest = 0;
				return sor;
			}
		}
	}
	*dest = 0;
	return sor;
}

static int __init MTD_New_Region(char *line)
{
	char	string[MAX_NAME_SIZE];
	int	params[6];
	get_options (get_string_option(string,sizeof(string),line),6,params);
	if(params[0]<1)
	{
		printk(MTD_FORTUNET_PK "Bad parameters for MTD Region "
			" name,region-number[,base,size,bankwidth,altbankwidth]\n");
		return 1;
	}
	if((params[1]<0)||(params[1]>=MAX_NUM_REGIONS))
	{
		printk(MTD_FORTUNET_PK "Bad region index of %d only have 0..%u regions\n",
			params[1],MAX_NUM_REGIONS-1);
		return 1;
	}
	memset(&map_regions[params[1]],0,sizeof(map_regions[params[1]]));
	memcpy(&map_regions[params[1]].map_info,
		&default_map,sizeof(map_regions[params[1]].map_info));
        map_regions_set[params[1]] = 1;
        map_regions[params[1]].window_addr_physical = DEF_WINDOW_ADDR_PHY;
        map_regions[params[1]].altbankwidth = 2;
        map_regions[params[1]].mymtd = NULL;
	map_regions[params[1]].map_info.name = map_regions[params[1]].map_name;
	strcpy(map_regions[params[1]].map_info.name,string);
	if(params[0]>1)
	{
		map_regions[params[1]].window_addr_physical = params[2];
	}
	if(params[0]>2)
	{
		map_regions[params[1]].map_info.size = params[3];
	}
	if(params[0]>3)
	{
		map_regions[params[1]].map_info.bankwidth = params[4];
	}
	if(params[0]>4)
	{
		map_regions[params[1]].altbankwidth = params[5];
	}
	return 1;
}

static int __init MTD_New_Partition(char *line)
{
	char	string[MAX_NAME_SIZE];
	int	params[4];
	get_options (get_string_option(string,sizeof(string),line),4,params);
	if(params[0]<3)
	{
		printk(MTD_FORTUNET_PK "Bad parameters for MTD Partition "
			" name,region-number,size,offset\n");
		return 1;
	}
	if((params[1]<0)||(params[1]>=MAX_NUM_REGIONS))
	{
		printk(MTD_FORTUNET_PK "Bad region index of %d only have 0..%u regions\n",
			params[1],MAX_NUM_REGIONS-1);
		return 1;
	}
	if(map_regions_parts[params[1]]>=MAX_NUM_PARTITIONS)
	{
		printk(MTD_FORTUNET_PK "Out of space for partition in this region\n");
		return 1;
	}
	map_regions[params[1]].parts[map_regions_parts[params[1]]].name =
		map_regions[params[1]].	parts_name[map_regions_parts[params[1]]];
	strcpy(map_regions[params[1]].parts[map_regions_parts[params[1]]].name,string);
	map_regions[params[1]].parts[map_regions_parts[params[1]]].size =
		params[2];
	map_regions[params[1]].parts[map_regions_parts[params[1]]].offset =
		params[3];
	map_regions[params[1]].parts[map_regions_parts[params[1]]].mask_flags = 0;
	map_regions_parts[params[1]]++;
	return 1;
}

__setup("MTD_Region=", MTD_New_Region);
__setup("MTD_Partition=", MTD_New_Partition);

/* Backwards-spelling-compatibility */
__setup("MTD_Partion=", MTD_New_Partition);

int __init init_fortunet(void)
{
	int	ix,iy;
	for(iy=ix=0;ix<MAX_NUM_REGIONS;ix++)
	{
		if(map_regions_parts[ix]&&(!map_regions_set[ix]))
		{
			printk(MTD_FORTUNET_PK "Region %d is not setup (Setting to default)\n",
				ix);
			memset(&map_regions[ix],0,sizeof(map_regions[ix]));
			memcpy(&map_regions[ix].map_info,&default_map,
				sizeof(map_regions[ix].map_info));
			map_regions_set[ix] = 1;
			map_regions[ix].window_addr_physical = DEF_WINDOW_ADDR_PHY;
			map_regions[ix].altbankwidth = 2;
			map_regions[ix].mymtd = NULL;
			map_regions[ix].map_info.name = map_regions[ix].map_name;
			strcpy(map_regions[ix].map_info.name,"FORTUNET");
		}
		if(map_regions_set[ix])
		{
			iy++;
			printk(KERN_NOTICE MTD_FORTUNET_PK "%s flash device at physically "
				" address %x size %x\n",
				map_regions[ix].map_info.name,
				map_regions[ix].window_addr_physical,
				map_regions[ix].map_info.size);

			map_regions[ix].map_info.phys =	map_regions[ix].window_addr_physical,

			map_regions[ix].map_info.virt =
				ioremap_nocache(
				map_regions[ix].window_addr_physical,
				map_regions[ix].map_info.size);
			if(!map_regions[ix].map_info.virt)
			{
				printk(MTD_FORTUNET_PK "%s flash failed to ioremap!\n",
					map_regions[ix].map_info.name);
				return -ENXIO;
			}
			simple_map_init(&map_regions[ix].map_info);

			printk(KERN_NOTICE MTD_FORTUNET_PK "%s flash is virtually at: %x\n",
				map_regions[ix].map_info.name,
				map_regions[ix].map_info.virt);
			map_regions[ix].mymtd = do_map_probe("cfi_probe",
				&map_regions[ix].map_info);
			if((!map_regions[ix].mymtd)&&(
				map_regions[ix].altbankwidth!=map_regions[ix].map_info.bankwidth))
			{
				printk(KERN_NOTICE MTD_FORTUNET_PK "Trying alternate bankwidth "
					"for %s flash.\n",
					map_regions[ix].map_info.name);
				map_regions[ix].map_info.bankwidth =
					map_regions[ix].altbankwidth;
				map_regions[ix].mymtd = do_map_probe("cfi_probe",
					&map_regions[ix].map_info);
			}
			map_regions[ix].mymtd->owner = THIS_MODULE;
			add_mtd_partitions(map_regions[ix].mymtd,
				map_regions[ix].parts,map_regions_parts[ix]);
		}
	}
	if(iy)
		return 0;
	return -ENXIO;
}

static void __exit cleanup_fortunet(void)
{
	int	ix;
	for(ix=0;ix<MAX_NUM_REGIONS;ix++)
	{
		if(map_regions_set[ix])
		{
			if( map_regions[ix].mymtd )
			{
				del_mtd_partitions( map_regions[ix].mymtd );
				map_destroy( map_regions[ix].mymtd );
			}
			iounmap((void *)map_regions[ix].map_info.virt);
		}
	}
}

module_init(init_fortunet);
module_exit(cleanup_fortunet);

MODULE_AUTHOR("FortuNet, Inc.");
MODULE_DESCRIPTION("MTD map driver for FortuNet boards");
Commit	Line	Data
1da177e4 LT	1	/* fortunet.c memory map
1da177e4 LT	2	*
69f34c98	3	* $Id: fortunet.c,v 1.11 2005/11/07 11:14:27 gleixner Exp $
1da177e4 LT	4	*/
	5
	6	#include <linux/module.h>
	7	#include <linux/types.h>
	8	#include <linux/kernel.h>
	9	#include <linux/init.h>
4e57b681 TS	10	#include <linux/string.h>
4e57b681 TS	11
1da177e4 LT	12	#include <linux/mtd/mtd.h>
	13	#include <linux/mtd/map.h>
	14	#include <linux/mtd/partitions.h>
	15
4e57b681 TS	16	#include <asm/io.h>
4e57b681 TS	17
1da177e4 LT	18	#define MAX_NUM_REGIONS 4
	19	#define MAX_NUM_PARTITIONS 8
	20
	21	#define DEF_WINDOW_ADDR_PHY 0x00000000
	22	#define DEF_WINDOW_SIZE 0x00800000 // 8 Mega Bytes
	23
	24	#define MTD_FORTUNET_PK "MTD FortuNet: "
	25
	26	#define MAX_NAME_SIZE 128
	27
	28	struct map_region
	29	{
	30	int window_addr_physical;
	31	int altbankwidth;
	32	struct map_info map_info;
	33	struct mtd_info *mymtd;
	34	struct mtd_partition parts[MAX_NUM_PARTITIONS];
	35	char map_name[MAX_NAME_SIZE];
	36	char parts_name[MAX_NUM_PARTITIONS][MAX_NAME_SIZE];
	37	};
	38
	39	static struct map_region map_regions[MAX_NUM_REGIONS];
	40	static int map_regions_set[MAX_NUM_REGIONS] = {0,0,0,0};
	41	static int map_regions_parts[MAX_NUM_REGIONS] = {0,0,0,0};
	42
	43
	44
	45	struct map_info default_map = {
	46	.size = DEF_WINDOW_SIZE,
	47	.bankwidth = 4,
	48	};
	49
	50	static char * __init get_string_option(char dest,int dest_size,char sor)
	51	{
	52	if(!dest_size)
	53	return sor;
	54	dest_size--;
	55	while(*sor)
	56	{
	57	if(*sor==',')
	58	{
	59	sor++;
	60	break;
	61	}
	62	else if(*sor=='\"')
	63	{
	64	sor++;
	65	while(*sor)
	66	{
	67	if(*sor=='\"')
	68	{
	69	sor++;
	70	break;
	71	}
	72	dest = sor;
	73	dest++;
	74	sor++;
	75	dest_size--;
	76	if(!dest_size)
	77	{
	78	*dest = 0;
	79	return sor;
	80	}
	81	}
82	}
83	else
84	{
85	dest = sor;
86	dest++;
87	sor++;
88	dest_size--;
89	if(!dest_size)
90	{
91	*dest = 0;
92	return sor;
93	}
94	}
95	}
96	*dest = 0;
97	return sor;
98	}
99
100	static int __init MTD_New_Region(char *line)
101	{
102	char string[MAX_NAME_SIZE];
103	int params[6];
104	get_options (get_string_option(string,sizeof(string),line),6,params);
105	if(params[0]<1)
106	{
107	printk(MTD_FORTUNET_PK "Bad parameters for MTD Region "
108	" name,region-number[,base,size,bankwidth,altbankwidth]\n");
109	return 1;
110	}
111	if((params[1]<0)\|\|(params[1]>=MAX_NUM_REGIONS))
112	{
113	printk(MTD_FORTUNET_PK "Bad region index of %d only have 0..%u regions\n",
114	params[1],MAX_NUM_REGIONS-1);
115	return 1;
116	}
117	memset(&map_regions[params[1]],0,sizeof(map_regions[params[1]]));
118	memcpy(&map_regions[params[1]].map_info,
119	&default_map,sizeof(map_regions[params[1]].map_info));
120	map_regions_set[params[1]] = 1;
121	map_regions[params[1]].window_addr_physical = DEF_WINDOW_ADDR_PHY;
122	map_regions[params[1]].altbankwidth = 2;
123	map_regions[params[1]].mymtd = NULL;
124	map_regions[params[1]].map_info.name = map_regions[params[1]].map_name;
125	strcpy(map_regions[params[1]].map_info.name,string);
126	if(params[0]>1)
127	{
128	map_regions[params[1]].window_addr_physical = params[2];
129	}
130	if(params[0]>2)
131	{
132	map_regions[params[1]].map_info.size = params[3];
133	}
134	if(params[0]>3)
135	{
136	map_regions[params[1]].map_info.bankwidth = params[4];
137	}
138	if(params[0]>4)
139	{
140	map_regions[params[1]].altbankwidth = params[5];
141	}
142	return 1;
143	}
144
145	static int __init MTD_New_Partition(char *line)
146	{
147	char string[MAX_NAME_SIZE];
148	int params[4];
149	get_options (get_string_option(string,sizeof(string),line),4,params);
150	if(params[0]<3)
151	{
152	printk(MTD_FORTUNET_PK "Bad parameters for MTD Partition "
153	" name,region-number,size,offset\n");
154	return 1;
155	}
156	if((params[1]<0)\|\|(params[1]>=MAX_NUM_REGIONS))
157	{
158	printk(MTD_FORTUNET_PK "Bad region index of %d only have 0..%u regions\n",
159	params[1],MAX_NUM_REGIONS-1);
160	return 1;
161	}
162	if(map_regions_parts[params[1]]>=MAX_NUM_PARTITIONS)
163	{
164	printk(MTD_FORTUNET_PK "Out of space for partition in this region\n");
165	return 1;
166	}
167	map_regions[params[1]].parts[map_regions_parts[params[1]]].name =
168	map_regions[params[1]]. parts_name[map_regions_parts[params[1]]];
169	strcpy(map_regions[params[1]].parts[map_regions_parts[params[1]]].name,string);
170	map_regions[params[1]].parts[map_regions_parts[params[1]]].size =
171	params[2];
172	map_regions[params[1]].parts[map_regions_parts[params[1]]].offset =
173	params[3];
174	map_regions[params[1]].parts[map_regions_parts[params[1]]].mask_flags = 0;
175	map_regions_parts[params[1]]++;
176	return 1;
177	}
178
179	__setup("MTD_Region=", MTD_New_Region);
180	__setup("MTD_Partition=", MTD_New_Partition);
181
182	/* Backwards-spelling-compatibility */
183	__setup("MTD_Partion=", MTD_New_Partition);
184
185	int __init init_fortunet(void)
186	{
187	int ix,iy;
188	for(iy=ix=0;ix<MAX_NUM_REGIONS;ix++)
189	{
190	if(map_regions_parts[ix]&&(!map_regions_set[ix]))
191	{
192	printk(MTD_FORTUNET_PK "Region %d is not setup (Setting to default)\n",
193	ix);
194	memset(&map_regions[ix],0,sizeof(map_regions[ix]));
195	memcpy(&map_regions[ix].map_info,&default_map,
196	sizeof(map_regions[ix].map_info));
197	map_regions_set[ix] = 1;
198	map_regions[ix].window_addr_physical = DEF_WINDOW_ADDR_PHY;
199	map_regions[ix].altbankwidth = 2;
200	map_regions[ix].mymtd = NULL;
201	map_regions[ix].map_info.name = map_regions[ix].map_name;
202	strcpy(map_regions[ix].map_info.name,"FORTUNET");
203	}
204	if(map_regions_set[ix])
205	{
206	iy++;
207	printk(KERN_NOTICE MTD_FORTUNET_PK "%s flash device at physically "
208	" address %x size %x\n",
209	map_regions[ix].map_info.name,
210	map_regions[ix].window_addr_physical,
211	map_regions[ix].map_info.size);
212
213	map_regions[ix].map_info.phys = map_regions[ix].window_addr_physical,
214
69f34c98	215	map_regions[ix].map_info.virt =
1da177e4 LT	216	ioremap_nocache(
	217	map_regions[ix].window_addr_physical,
	218	map_regions[ix].map_info.size);
	219	if(!map_regions[ix].map_info.virt)
	220	{
	221	printk(MTD_FORTUNET_PK "%s flash failed to ioremap!\n",
	222	map_regions[ix].map_info.name);
	223	return -ENXIO;
	224	}
	225	simple_map_init(&map_regions[ix].map_info);
	226
	227	printk(KERN_NOTICE MTD_FORTUNET_PK "%s flash is virtually at: %x\n",
	228	map_regions[ix].map_info.name,
	229	map_regions[ix].map_info.virt);
	230	map_regions[ix].mymtd = do_map_probe("cfi_probe",
	231	&map_regions[ix].map_info);
	232	if((!map_regions[ix].mymtd)&&(
	233	map_regions[ix].altbankwidth!=map_regions[ix].map_info.bankwidth))
	234	{
	235	printk(KERN_NOTICE MTD_FORTUNET_PK "Trying alternate bankwidth "
	236	"for %s flash.\n",
	237	map_regions[ix].map_info.name);
	238	map_regions[ix].map_info.bankwidth =
	239	map_regions[ix].altbankwidth;
	240	map_regions[ix].mymtd = do_map_probe("cfi_probe",
	241	&map_regions[ix].map_info);
	242	}
	243	map_regions[ix].mymtd->owner = THIS_MODULE;
	244	add_mtd_partitions(map_regions[ix].mymtd,
	245	map_regions[ix].parts,map_regions_parts[ix]);
	246	}
	247	}
	248	if(iy)
	249	return 0;
	250	return -ENXIO;
	251	}
	252
	253	static void __exit cleanup_fortunet(void)
	254	{
	255	int ix;
	256	for(ix=0;ix<MAX_NUM_REGIONS;ix++)
	257	{
	258	if(map_regions_set[ix])
	259	{
	260	if( map_regions[ix].mymtd )
	261	{
	262	del_mtd_partitions( map_regions[ix].mymtd );
	263	map_destroy( map_regions[ix].mymtd );
	264	}
	265	iounmap((void *)map_regions[ix].map_info.virt);
	266	}
	267	}
	268	}
	269
	270	module_init(init_fortunet);
	271	module_exit(cleanup_fortunet);
	272
	273	MODULE_AUTHOR("FortuNet, Inc.");
	274	MODULE_DESCRIPTION("MTD map driver for FortuNet boards");