aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-powerpc/fsl_lbc.h
blob: 303f5484c0507154a8177614eb8b3d6a83a538cd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
/* Freescale Local Bus Controller
 *
 * Copyright (c) 2006-2007 Freescale Semiconductor
 *
 * Authors: Nick Spence <nick.spence@freescale.com>,
 *          Scott Wood <scottwood@freescale.com>
 *
 * 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
 */

#ifndef __ASM_FSL_LBC_H
#define __ASM_FSL_LBC_H

#include <linux/types.h>
#include <linux/spinlock.h>
#include <asm/io.h>

struct fsl_lbc_bank {
	__be32 br;             /**< Base Register  */
#define BR_BA           0xFFFF8000
#define BR_BA_SHIFT             15
#define BR_PS           0x00001800
#define BR_PS_SHIFT             11
#define BR_PS_8         0x00000800  /* Port Size 8 bit */
#define BR_PS_16        0x00001000  /* Port Size 16 bit */
#define BR_PS_32        0x00001800  /* Port Size 32 bit */
#define BR_DECC         0x00000600
#define BR_DECC_SHIFT            9
#define BR_DECC_OFF     0x00000000  /* HW ECC checking and generation off */
#define BR_DECC_CHK     0x00000200  /* HW ECC checking on, generation off */
#define BR_DECC_CHK_GEN 0x00000400  /* HW ECC checking and generation on */
#define BR_WP           0x00000100
#define BR_WP_SHIFT              8
#define BR_MSEL         0x000000E0
#define BR_MSEL_SHIFT            5
#define BR_MS_GPCM      0x00000000  /* GPCM */
#define BR_MS_FCM       0x00000020  /* FCM */
#define BR_MS_SDRAM     0x00000060  /* SDRAM */
#define BR_MS_UPMA      0x00000080  /* UPMA */
#define BR_MS_UPMB      0x000000A0  /* UPMB */
#define BR_MS_UPMC      0x000000C0  /* UPMC */
#define BR_V            0x00000001
#define BR_V_SHIFT               0
#define BR_RES          ~(BR_BA|BR_PS|BR_DECC|BR_WP|BR_MSEL|BR_V)

	__be32 or;             /**< Base Register  */
#define OR0 0x5004
#define OR1 0x500C
#define OR2 0x5014
#define OR3 0x501C
#define OR4 0x5024
#define OR5 0x502C
#define OR6 0x5034
#define OR7 0x503C

#define OR_FCM_AM               0xFFFF8000
#define OR_FCM_AM_SHIFT                 15
#define OR_FCM_BCTLD            0x00001000
#define OR_FCM_BCTLD_SHIFT              12
#define OR_FCM_PGS              0x00000400
#define OR_FCM_PGS_SHIFT                10
#define OR_FCM_CSCT             0x00000200
#define OR_FCM_CSCT_SHIFT                9
#define OR_FCM_CST              0x00000100
#define OR_FCM_CST_SHIFT                 8
#define OR_FCM_CHT              0x00000080
#define OR_FCM_CHT_SHIFT                 7
#define OR_FCM_SCY              0x00000070
#define OR_FCM_SCY_SHIFT                 4
#define OR_FCM_SCY_1            0x00000010
#define OR_FCM_SCY_2            0x00000020
#define OR_FCM_SCY_3            0x00000030
#define OR_FCM_SCY_4            0x00000040
#define OR_FCM_SCY_5            0x00000050
#define OR_FCM_SCY_6            0x00000060
#define OR_FCM_SCY_7            0x00000070
#define OR_FCM_RST              0x00000008
#define OR_FCM_RST_SHIFT                 3
#define OR_FCM_TRLX             0x00000004
#define OR_FCM_TRLX_SHIFT                2
#define OR_FCM_EHTR             0x00000002
#define OR_FCM_EHTR_SHIFT                1
};

struct fsl_lbc_regs {
	struct fsl_lbc_bank bank[8];
	u8 res0[0x28];
	__be32 mar;             /**< UPM Address Register */
	u8 res1[0x4];
	__be32 mamr;            /**< UPMA Mode Register */
#define MxMR_OP_NO	(0 << 28) /**< normal operation */
#define MxMR_OP_WA	(1 << 28) /**< write array */
#define MxMR_OP_RA	(2 << 28) /**< read array */
#define MxMR_OP_RP	(3 << 28) /**< run pattern */
#define MxMR_MAD	0x3f      /**< machine address */
	__be32 mbmr;            /**< UPMB Mode Register */
	__be32 mcmr;            /**< UPMC Mode Register */
	u8 res2[0x8];
	__be32 mrtpr;           /**< Memory Refresh Timer Prescaler Register */
	__be32 mdr;             /**< UPM Data Register */
	u8 res3[0x4];
	__be32 lsor;            /**< Special Operation Initiation Register */
	__be32 lsdmr;           /**< SDRAM Mode Register */
	u8 res4[0x8];
	__be32 lurt;            /**< UPM Refresh Timer */
	__be32 lsrt;            /**< SDRAM Refresh Timer */
	u8 res5[0x8];
	__be32 ltesr;           /**< Transfer Error Status Register */
#define LTESR_BM   0x80000000
#define LTESR_FCT  0x40000000
#define LTESR_PAR  0x20000000
#define LTESR_WP   0x04000000
#define LTESR_ATMW 0x00800000
#define LTESR_ATMR 0x00400000
#define LTESR_CS   0x00080000
#define LTESR_CC   0x00000001
#define LTESR_NAND_MASK (LTESR_FCT | LTESR_PAR | LTESR_CC)
	__be32 ltedr;           /**< Transfer Error Disable Register */
	__be32 lteir;           /**< Transfer Error Interrupt Register */
	__be32 lteatr;          /**< Transfer Error Attributes Register */
	__be32 ltear;           /**< Transfer Error Address Register */
	u8 res6[0xC];
	__be32 lbcr;            /**< Configuration Register */
#define LBCR_LDIS  0x80000000
#define LBCR_LDIS_SHIFT    31
#define LBCR_BCTLC 0x00C00000
#define LBCR_BCTLC_SHIFT   22
#define LBCR_AHD   0x00200000
#define LBCR_LPBSE 0x00020000
#define LBCR_LPBSE_SHIFT   17
#define LBCR_EPAR  0x00010000
#define LBCR_EPAR_SHIFT    16
#define LBCR_BMT   0x0000FF00
#define LBCR_BMT_SHIFT      8
#define LBCR_INIT  0x00040000
	__be32 lcrr;            /**< Clock Ratio Register */
#define LCRR_DBYP    0x80000000
#define LCRR_DBYP_SHIFT      31
#define LCRR_BUFCMDC 0x30000000
#define LCRR_BUFCMDC_SHIFT   28
#define LCRR_ECL     0x03000000
#define LCRR_ECL_SHIFT       24
#define LCRR_EADC    0x00030000
#define LCRR_EADC_SHIFT      16
#define LCRR_CLKDIV  0x0000000F
#define LCRR_CLKDIV_SHIFT     0
	u8 res7[0x8];
	__be32 fmr;             /**< Flash Mode Register */
#define FMR_CWTO     0x0000F000
#define FMR_CWTO_SHIFT       12
#define FMR_BOOT     0x00000800
#define FMR_ECCM     0x00000100
#define FMR_AL       0x00000030
#define FMR_AL_SHIFT          4
#define FMR_OP       0x00000003
#define FMR_OP_SHIFT          0
	__be32 fir;             /**< Flash Instruction Register */
#define FIR_OP0      0xF0000000
#define FIR_OP0_SHIFT        28
#define FIR_OP1      0x0F000000
#define FIR_OP1_SHIFT        24
#define FIR_OP2      0x00F00000
#define FIR_OP2_SHIFT        20
#define FIR_OP3      0x000F0000
#define FIR_OP3_SHIFT        16
#define FIR_OP4      0x0000F000
#define FIR_OP4_SHIFT        12
#define FIR_OP5      0x00000F00
#define FIR_OP5_SHIFT         8
#define FIR_OP6      0x000000F0
#define FIR_OP6_SHIFT         4
#define FIR_OP7      0x0000000F
#define FIR_OP7_SHIFT         0
#define FIR_OP_NOP   0x0	/* No operation and end of sequence */
#define FIR_OP_CA    0x1        /* Issue current column address */
#define FIR_OP_PA    0x2        /* Issue current block+page address */
#define FIR_OP_UA    0x3        /* Issue user defined address */
#define FIR_OP_CM0   0x4        /* Issue command from FCR[CMD0] */
#define FIR_OP_CM1   0x5        /* Issue command from FCR[CMD1] */
#define FIR_OP_CM2   0x6        /* Issue command from FCR[CMD2] */
#define FIR_OP_CM3   0x7        /* Issue command from FCR[CMD3] */
#define FIR_OP_WB    0x8        /* Write FBCR bytes from FCM buffer */
#define FIR_OP_WS    0x9        /* Write 1 or 2 bytes from MDR[AS] */
#define FIR_OP_RB    0xA        /* Read FBCR bytes to FCM buffer */
#define FIR_OP_RS    0xB        /* Read 1 or 2 bytes to MDR[AS] */
#define FIR_OP_CW0   0xC        /* Wait then issue FCR[CMD0] */
#define FIR_OP_CW1   0xD        /* Wait then issue FCR[CMD1] */
#define FIR_OP_RBW   0xE        /* Wait then read FBCR bytes */
#define FIR_OP_RSW   0xE        /* Wait then read 1 or 2 bytes */
	__be32 fcr;             /**< Flash Command Register */
#define FCR_CMD0     0xFF000000
#define FCR_CMD0_SHIFT       24
#define FCR_CMD1     0x00FF0000
#define FCR_CMD1_SHIFT       16
#define FCR_CMD2     0x0000FF00
#define FCR_CMD2_SHIFT        8
#define FCR_CMD3     0x000000FF
#define FCR_CMD3_SHIFT        0
	__be32 fbar;            /**< Flash Block Address Register */
#define FBAR_BLK     0x00FFFFFF
	__be32 fpar;            /**< Flash Page Address Register */
#define FPAR_SP_PI   0x00007C00
#define FPAR_SP_PI_SHIFT     10
#define FPAR_SP_MS   0x00000200
#define FPAR_SP_CI   0x000001FF
#define FPAR_SP_CI_SHIFT      0
#define FPAR_LP_PI   0x0003F000
#define FPAR_LP_PI_SHIFT     12
#define FPAR_LP_MS   0x00000800
#define FPAR_LP_CI   0x000007FF
#define FPAR_LP_CI_SHIFT      0
	__be32 fbcr;            /**< Flash Byte Count Register */
#define FBCR_BC      0x00000FFF
	u8 res11[0x8];
	u8 res8[0xF00];
};

extern struct fsl_lbc_regs __iomem *fsl_lbc_regs;
extern spinlock_t fsl_lbc_lock;

/*
 * FSL UPM routines
 */
struct fsl_upm {
	__be32 __iomem *mxmr;
	int width;
};

extern int fsl_lbc_find(phys_addr_t addr_base);
extern int fsl_upm_find(phys_addr_t addr_base, struct fsl_upm *upm);

/**
 * fsl_upm_start_pattern - start UPM patterns execution
 * @upm:	pointer to the fsl_upm structure obtained via fsl_upm_find
 * @pat_offset:	UPM pattern offset for the command to be executed
 *
 * This routine programmes UPM so the next memory access that hits an UPM
 * will trigger pattern execution, starting at pat_offset.
 */
static inline void fsl_upm_start_pattern(struct fsl_upm *upm, u8 pat_offset)
{
	clrsetbits_be32(upm->mxmr, MxMR_MAD, MxMR_OP_RP | pat_offset);
}

/**
 * fsl_upm_end_pattern - end UPM patterns execution
 * @upm:	pointer to the fsl_upm structure obtained via fsl_upm_find
 *
 * This routine reverts UPM to normal operation mode.
 */
static inline void fsl_upm_end_pattern(struct fsl_upm *upm)
{
	clrbits32(upm->mxmr, MxMR_OP_RP);

	while (in_be32(upm->mxmr) & MxMR_OP_RP)
		cpu_relax();
}

/**
 * fsl_upm_run_pattern - actually run an UPM pattern
 * @upm:	pointer to the fsl_upm structure obtained via fsl_upm_find
 * @io_base:	remapped pointer to where memory access should happen
 * @mar:	MAR register content during pattern execution
 *
 * This function triggers dummy write to the memory specified by the io_base,
 * thus UPM pattern actually executed. Note that mar usage depends on the
 * pre-programmed AMX bits in the UPM RAM.
 */
static inline int fsl_upm_run_pattern(struct fsl_upm *upm,
				      void __iomem *io_base, u32 mar)
{
	int ret = 0;
	unsigned long flags;

	spin_lock_irqsave(&fsl_lbc_lock, flags);

	out_be32(&fsl_lbc_regs->mar, mar << (32 - upm->width));

	switch (upm->width) {
	case 8:
		out_8(io_base, 0x0);
		break;
	case 16:
		out_be16(io_base, 0x0);
		break;
	case 32:
		out_be32(io_base, 0x0);
		break;
	default:
		ret = -EINVAL;
		break;
	}

	spin_unlock_irqrestore(&fsl_lbc_lock, flags);

	return ret;
}

#endif /* __ASM_FSL_LBC_H */