arch/powerpc/include/asm/fsl_lbc.h

   1 /* Freescale Local Bus Controller
   2  *
   3  * Copyright © 2006-2007, 2010 Freescale Semiconductor
   4  *
   5  * Authors: Nick Spence <nick.spence@freescale.com>,
   6  *          Scott Wood <scottwood@freescale.com>
   7  *          Jack Lan <jack.lan@freescale.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #ifndef __ASM_FSL_LBC_H
  25 #define __ASM_FSL_LBC_H
  26
  27 #include <linux/compiler.h>
  28 #include <linux/types.h>
  29 #include <linux/io.h>
  30 #include <linux/device.h>
  31 #include <linux/spinlock.h>
  32
  33 struct fsl_lbc_bank {
  34         __be32 br;             /**< Base Register  */
  35 #define BR_BA           0xFFFF8000
  36 #define BR_BA_SHIFT             15
  37 #define BR_PS           0x00001800
  38 #define BR_PS_SHIFT             11
  39 #define BR_PS_8         0x00000800  /* Port Size 8 bit */
  40 #define BR_PS_16        0x00001000  /* Port Size 16 bit */
  41 #define BR_PS_32        0x00001800  /* Port Size 32 bit */
  42 #define BR_DECC         0x00000600
  43 #define BR_DECC_SHIFT            9
  44 #define BR_DECC_OFF     0x00000000  /* HW ECC checking and generation off */
  45 #define BR_DECC_CHK     0x00000200  /* HW ECC checking on, generation off */
  46 #define BR_DECC_CHK_GEN 0x00000400  /* HW ECC checking and generation on */
  47 #define BR_WP           0x00000100
  48 #define BR_WP_SHIFT              8
  49 #define BR_MSEL         0x000000E0
  50 #define BR_MSEL_SHIFT            5
  51 #define BR_MS_GPCM      0x00000000  /* GPCM */
  52 #define BR_MS_FCM       0x00000020  /* FCM */
  53 #define BR_MS_SDRAM     0x00000060  /* SDRAM */
  54 #define BR_MS_UPMA      0x00000080  /* UPMA */
  55 #define BR_MS_UPMB      0x000000A0  /* UPMB */
  56 #define BR_MS_UPMC      0x000000C0  /* UPMC */
  57 #define BR_V            0x00000001
  58 #define BR_V_SHIFT               0
  59 #define BR_RES          ~(BR_BA|BR_PS|BR_DECC|BR_WP|BR_MSEL|BR_V)
  60
  61         __be32 or;             /**< Base Register  */
  62 #define OR0 0x5004
  63 #define OR1 0x500C
  64 #define OR2 0x5014
  65 #define OR3 0x501C
  66 #define OR4 0x5024
  67 #define OR5 0x502C
  68 #define OR6 0x5034
  69 #define OR7 0x503C
  70
  71 #define OR_FCM_AM               0xFFFF8000
  72 #define OR_FCM_AM_SHIFT                 15
  73 #define OR_FCM_BCTLD            0x00001000
  74 #define OR_FCM_BCTLD_SHIFT              12
  75 #define OR_FCM_PGS              0x00000400
  76 #define OR_FCM_PGS_SHIFT                10
  77 #define OR_FCM_CSCT             0x00000200
  78 #define OR_FCM_CSCT_SHIFT                9
  79 #define OR_FCM_CST              0x00000100
  80 #define OR_FCM_CST_SHIFT                 8
  81 #define OR_FCM_CHT              0x00000080
  82 #define OR_FCM_CHT_SHIFT                 7
  83 #define OR_FCM_SCY              0x00000070
  84 #define OR_FCM_SCY_SHIFT                 4
  85 #define OR_FCM_SCY_1            0x00000010
  86 #define OR_FCM_SCY_2            0x00000020
  87 #define OR_FCM_SCY_3            0x00000030
  88 #define OR_FCM_SCY_4            0x00000040
  89 #define OR_FCM_SCY_5            0x00000050
  90 #define OR_FCM_SCY_6            0x00000060
  91 #define OR_FCM_SCY_7            0x00000070
  92 #define OR_FCM_RST              0x00000008
  93 #define OR_FCM_RST_SHIFT                 3
  94 #define OR_FCM_TRLX             0x00000004
  95 #define OR_FCM_TRLX_SHIFT                2
  96 #define OR_FCM_EHTR             0x00000002
  97 #define OR_FCM_EHTR_SHIFT                1
  98 };
  99
 100 struct fsl_lbc_regs {
 101         struct fsl_lbc_bank bank[12];
 102         u8 res0[0x8];
 103         __be32 mar;             /**< UPM Address Register */
 104         u8 res1[0x4];
 105         __be32 mamr;            /**< UPMA Mode Register */
 106 #define MxMR_OP_NO      (0 << 28) /**< normal operation */
 107 #define MxMR_OP_WA      (1 << 28) /**< write array */
 108 #define MxMR_OP_RA      (2 << 28) /**< read array */
 109 #define MxMR_OP_RP      (3 << 28) /**< run pattern */
 110 #define MxMR_MAD        0x3f      /**< machine address */
 111         __be32 mbmr;            /**< UPMB Mode Register */
 112         __be32 mcmr;            /**< UPMC Mode Register */
 113         u8 res2[0x8];
 114         __be32 mrtpr;           /**< Memory Refresh Timer Prescaler Register */
 115         __be32 mdr;             /**< UPM Data Register */
 116         u8 res3[0x4];
 117         __be32 lsor;            /**< Special Operation Initiation Register */
 118         __be32 lsdmr;           /**< SDRAM Mode Register */
 119         u8 res4[0x8];
 120         __be32 lurt;            /**< UPM Refresh Timer */
 121         __be32 lsrt;            /**< SDRAM Refresh Timer */
 122         u8 res5[0x8];
 123         __be32 ltesr;           /**< Transfer Error Status Register */
 124 #define LTESR_BM   0x80000000
 125 #define LTESR_FCT  0x40000000
 126 #define LTESR_PAR  0x20000000
 127 #define LTESR_WP   0x04000000
 128 #define LTESR_ATMW 0x00800000
 129 #define LTESR_ATMR 0x00400000
 130 #define LTESR_CS   0x00080000
 131 #define LTESR_UPM  0x00000002
 132 #define LTESR_CC   0x00000001
 133 #define LTESR_NAND_MASK (LTESR_FCT | LTESR_PAR | LTESR_CC)
 134 #define LTESR_MASK      (LTESR_BM | LTESR_FCT | LTESR_PAR | LTESR_WP \
 135                          | LTESR_ATMW | LTESR_ATMR | LTESR_CS | LTESR_UPM \
 136                          | LTESR_CC)
 137 #define LTESR_CLEAR     0xFFFFFFFF
 138 #define LTECCR_CLEAR    0xFFFFFFFF
 139 #define LTESR_STATUS    LTESR_MASK
 140 #define LTEIR_ENABLE    LTESR_MASK
 141 #define LTEDR_ENABLE    0x00000000
 142         __be32 ltedr;           /**< Transfer Error Disable Register */
 143         __be32 lteir;           /**< Transfer Error Interrupt Register */
 144         __be32 lteatr;          /**< Transfer Error Attributes Register */
 145         __be32 ltear;           /**< Transfer Error Address Register */
 146         __be32 lteccr;          /**< Transfer Error ECC Register */
 147         u8 res6[0x8];
 148         __be32 lbcr;            /**< Configuration Register */
 149 #define LBCR_LDIS  0x80000000
 150 #define LBCR_LDIS_SHIFT    31
 151 #define LBCR_BCTLC 0x00C00000
 152 #define LBCR_BCTLC_SHIFT   22
 153 #define LBCR_AHD   0x00200000
 154 #define LBCR_LPBSE 0x00020000
 155 #define LBCR_LPBSE_SHIFT   17
 156 #define LBCR_EPAR  0x00010000
 157 #define LBCR_EPAR_SHIFT    16
 158 #define LBCR_BMT   0x0000FF00
 159 #define LBCR_BMT_SHIFT      8
 160 #define LBCR_INIT  0x00040000
 161         __be32 lcrr;            /**< Clock Ratio Register */
 162 #define LCRR_DBYP    0x80000000
 163 #define LCRR_DBYP_SHIFT      31
 164 #define LCRR_BUFCMDC 0x30000000
 165 #define LCRR_BUFCMDC_SHIFT   28
 166 #define LCRR_ECL     0x03000000
 167 #define LCRR_ECL_SHIFT       24
 168 #define LCRR_EADC    0x00030000
 169 #define LCRR_EADC_SHIFT      16
 170 #define LCRR_CLKDIV  0x0000000F
 171 #define LCRR_CLKDIV_SHIFT     0
 172         u8 res7[0x8];
 173         __be32 fmr;             /**< Flash Mode Register */
 174 #define FMR_CWTO     0x0000F000
 175 #define FMR_CWTO_SHIFT       12
 176 #define FMR_BOOT     0x00000800
 177 #define FMR_ECCM     0x00000100
 178 #define FMR_AL       0x00000030
 179 #define FMR_AL_SHIFT          4
 180 #define FMR_OP       0x00000003
 181 #define FMR_OP_SHIFT          0
 182         __be32 fir;             /**< Flash Instruction Register */
 183 #define FIR_OP0      0xF0000000
 184 #define FIR_OP0_SHIFT        28
 185 #define FIR_OP1      0x0F000000
 186 #define FIR_OP1_SHIFT        24
 187 #define FIR_OP2      0x00F00000
 188 #define FIR_OP2_SHIFT        20
 189 #define FIR_OP3      0x000F0000
 190 #define FIR_OP3_SHIFT        16
 191 #define FIR_OP4      0x0000F000
 192 #define FIR_OP4_SHIFT        12
 193 #define FIR_OP5      0x00000F00
 194 #define FIR_OP5_SHIFT         8
 195 #define FIR_OP6      0x000000F0
 196 #define FIR_OP6_SHIFT         4
 197 #define FIR_OP7      0x0000000F
 198 #define FIR_OP7_SHIFT         0
 199 #define FIR_OP_NOP   0x0        /* No operation and end of sequence */
 200 #define FIR_OP_CA    0x1        /* Issue current column address */
 201 #define FIR_OP_PA    0x2        /* Issue current block+page address */
 202 #define FIR_OP_UA    0x3        /* Issue user defined address */
 203 #define FIR_OP_CM0   0x4        /* Issue command from FCR[CMD0] */
 204 #define FIR_OP_CM1   0x5        /* Issue command from FCR[CMD1] */
 205 #define FIR_OP_CM2   0x6        /* Issue command from FCR[CMD2] */
 206 #define FIR_OP_CM3   0x7        /* Issue command from FCR[CMD3] */
 207 #define FIR_OP_WB    0x8        /* Write FBCR bytes from FCM buffer */
 208 #define FIR_OP_WS    0x9        /* Write 1 or 2 bytes from MDR[AS] */
 209 #define FIR_OP_RB    0xA        /* Read FBCR bytes to FCM buffer */
 210 #define FIR_OP_RS    0xB        /* Read 1 or 2 bytes to MDR[AS] */
 211 #define FIR_OP_CW0   0xC        /* Wait then issue FCR[CMD0] */
 212 #define FIR_OP_CW1   0xD        /* Wait then issue FCR[CMD1] */
 213 #define FIR_OP_RBW   0xE        /* Wait then read FBCR bytes */
 214 #define FIR_OP_RSW   0xE        /* Wait then read 1 or 2 bytes */
 215         __be32 fcr;             /**< Flash Command Register */
 216 #define FCR_CMD0     0xFF000000
 217 #define FCR_CMD0_SHIFT       24
 218 #define FCR_CMD1     0x00FF0000
 219 #define FCR_CMD1_SHIFT       16
 220 #define FCR_CMD2     0x0000FF00
 221 #define FCR_CMD2_SHIFT        8
 222 #define FCR_CMD3     0x000000FF
 223 #define FCR_CMD3_SHIFT        0
 224         __be32 fbar;            /**< Flash Block Address Register */
 225 #define FBAR_BLK     0x00FFFFFF
 226         __be32 fpar;            /**< Flash Page Address Register */
 227 #define FPAR_SP_PI   0x00007C00
 228 #define FPAR_SP_PI_SHIFT     10
 229 #define FPAR_SP_MS   0x00000200
 230 #define FPAR_SP_CI   0x000001FF
 231 #define FPAR_SP_CI_SHIFT      0
 232 #define FPAR_LP_PI   0x0003F000
 233 #define FPAR_LP_PI_SHIFT     12
 234 #define FPAR_LP_MS   0x00000800
 235 #define FPAR_LP_CI   0x000007FF
 236 #define FPAR_LP_CI_SHIFT      0
 237         __be32 fbcr;            /**< Flash Byte Count Register */
 238 #define FBCR_BC      0x00000FFF
 239         u8 res11[0x8];
 240         u8 res8[0xF00];
 241 };
 242
 243 /*
 244  * FSL UPM routines
 245  */
 246 struct fsl_upm {
 247         __be32 __iomem *mxmr;
 248         int width;
 249 };
 250
 251 extern u32 fsl_lbc_addr(phys_addr_t addr_base);
 252 extern int fsl_lbc_find(phys_addr_t addr_base);
 253 extern int fsl_upm_find(phys_addr_t addr_base, struct fsl_upm *upm);
 254
 255 /**
 256  * fsl_upm_start_pattern - start UPM patterns execution
 257  * @upm:        pointer to the fsl_upm structure obtained via fsl_upm_find
 258  * @pat_offset: UPM pattern offset for the command to be executed
 259  *
 260  * This routine programmes UPM so the next memory access that hits an UPM
 261  * will trigger pattern execution, starting at pat_offset.
 262  */
 263 static inline void fsl_upm_start_pattern(struct fsl_upm *upm, u8 pat_offset)
 264 {
 265         clrsetbits_be32(upm->mxmr, MxMR_MAD, MxMR_OP_RP | pat_offset);
 266 }
 267
 268 /**
 269  * fsl_upm_end_pattern - end UPM patterns execution
 270  * @upm:        pointer to the fsl_upm structure obtained via fsl_upm_find
 271  *
 272  * This routine reverts UPM to normal operation mode.
 273  */
 274 static inline void fsl_upm_end_pattern(struct fsl_upm *upm)
 275 {
 276         clrbits32(upm->mxmr, MxMR_OP_RP);
 277
 278         while (in_be32(upm->mxmr) & MxMR_OP_RP)
 279                 cpu_relax();
 280 }
 281
 282 /* overview of the fsl lbc controller */
 283
 284 struct fsl_lbc_ctrl {
 285         /* device info */
 286         struct device                   *dev;
 287         struct fsl_lbc_regs __iomem     *regs;
 288         int                             irq;
 289         wait_queue_head_t               irq_wait;
 290         spinlock_t                      lock;
 291         void                            *nand;
 292
 293         /* status read from LTESR by irq handler */
 294         unsigned int                    irq_status;
 295 };
 296
 297 extern int fsl_upm_run_pattern(struct fsl_upm *upm, void __iomem *io_base,
 298                                u32 mar);
 299 extern struct fsl_lbc_ctrl *fsl_lbc_ctrl_dev;
 300
 301 #endif /* __ASM_FSL_LBC_H */