drivers/mtd/nand/raw/denali.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * NAND Flash Controller Device Driver
   4  * Copyright (c) 2009 - 2010, Intel Corporation and its suppliers.
   5  */
   6
   7 #ifndef __DENALI_H__
   8 #define __DENALI_H__
   9
  10 #include <linux/bits.h>
  11 #include <linux/completion.h>
  12 #include <linux/list.h>
  13 #include <linux/mtd/rawnand.h>
  14 #include <linux/spinlock_types.h>
  15 #include <linux/types.h>
  16
  17 #define DEVICE_RESET                            0x0
  18 #define     DEVICE_RESET__BANK(bank)                    BIT(bank)
  19
  20 #define TRANSFER_SPARE_REG                      0x10
  21 #define     TRANSFER_SPARE_REG__FLAG                    BIT(0)
  22
  23 #define LOAD_WAIT_CNT                           0x20
  24 #define     LOAD_WAIT_CNT__VALUE                        GENMASK(15, 0)
  25
  26 #define PROGRAM_WAIT_CNT                        0x30
  27 #define     PROGRAM_WAIT_CNT__VALUE                     GENMASK(15, 0)
  28
  29 #define ERASE_WAIT_CNT                          0x40
  30 #define     ERASE_WAIT_CNT__VALUE                       GENMASK(15, 0)
  31
  32 #define INT_MON_CYCCNT                          0x50
  33 #define     INT_MON_CYCCNT__VALUE                       GENMASK(15, 0)
  34
  35 #define RB_PIN_ENABLED                          0x60
  36 #define     RB_PIN_ENABLED__BANK(bank)                  BIT(bank)
  37
  38 #define MULTIPLANE_OPERATION                    0x70
  39 #define     MULTIPLANE_OPERATION__FLAG                  BIT(0)
  40
  41 #define MULTIPLANE_READ_ENABLE                  0x80
  42 #define     MULTIPLANE_READ_ENABLE__FLAG                BIT(0)
  43
  44 #define COPYBACK_DISABLE                        0x90
  45 #define     COPYBACK_DISABLE__FLAG                      BIT(0)
  46
  47 #define CACHE_WRITE_ENABLE                      0xa0
  48 #define     CACHE_WRITE_ENABLE__FLAG                    BIT(0)
  49
  50 #define CACHE_READ_ENABLE                       0xb0
  51 #define     CACHE_READ_ENABLE__FLAG                     BIT(0)
  52
  53 #define PREFETCH_MODE                           0xc0
  54 #define     PREFETCH_MODE__PREFETCH_EN                  BIT(0)
  55 #define     PREFETCH_MODE__PREFETCH_BURST_LENGTH        GENMASK(15, 4)
  56
  57 #define CHIP_ENABLE_DONT_CARE                   0xd0
  58 #define     CHIP_EN_DONT_CARE__FLAG                     BIT(0)
  59
  60 #define ECC_ENABLE                              0xe0
  61 #define     ECC_ENABLE__FLAG                            BIT(0)
  62
  63 #define GLOBAL_INT_ENABLE                       0xf0
  64 #define     GLOBAL_INT_EN_FLAG                          BIT(0)
  65
  66 #define TWHR2_AND_WE_2_RE                       0x100
  67 #define     TWHR2_AND_WE_2_RE__WE_2_RE                  GENMASK(5, 0)
  68 #define     TWHR2_AND_WE_2_RE__TWHR2                    GENMASK(13, 8)
  69
  70 #define TCWAW_AND_ADDR_2_DATA                   0x110
  71 /* The width of ADDR_2_DATA is 6 bit for old IP, 7 bit for new IP */
  72 #define     TCWAW_AND_ADDR_2_DATA__ADDR_2_DATA          GENMASK(6, 0)
  73 #define     TCWAW_AND_ADDR_2_DATA__TCWAW                GENMASK(13, 8)
  74
  75 #define RE_2_WE                                 0x120
  76 #define     RE_2_WE__VALUE                              GENMASK(5, 0)
  77
  78 #define ACC_CLKS                                0x130
  79 #define     ACC_CLKS__VALUE                             GENMASK(3, 0)
  80
  81 #define NUMBER_OF_PLANES                        0x140
  82 #define     NUMBER_OF_PLANES__VALUE                     GENMASK(2, 0)
  83
  84 #define PAGES_PER_BLOCK                         0x150
  85 #define     PAGES_PER_BLOCK__VALUE                      GENMASK(15, 0)
  86
  87 #define DEVICE_WIDTH                            0x160
  88 #define     DEVICE_WIDTH__VALUE                         GENMASK(1, 0)
  89
  90 #define DEVICE_MAIN_AREA_SIZE                   0x170
  91 #define     DEVICE_MAIN_AREA_SIZE__VALUE                GENMASK(15, 0)
  92
  93 #define DEVICE_SPARE_AREA_SIZE                  0x180
  94 #define     DEVICE_SPARE_AREA_SIZE__VALUE               GENMASK(15, 0)
  95
  96 #define TWO_ROW_ADDR_CYCLES                     0x190
  97 #define     TWO_ROW_ADDR_CYCLES__FLAG                   BIT(0)
  98
  99 #define MULTIPLANE_ADDR_RESTRICT                0x1a0
 100 #define     MULTIPLANE_ADDR_RESTRICT__FLAG              BIT(0)
 101
 102 #define ECC_CORRECTION                          0x1b0
 103 #define     ECC_CORRECTION__VALUE                       GENMASK(4, 0)
 104 #define     ECC_CORRECTION__ERASE_THRESHOLD             GENMASK(31, 16)
 105
 106 #define READ_MODE                               0x1c0
 107 #define     READ_MODE__VALUE                            GENMASK(3, 0)
 108
 109 #define WRITE_MODE                              0x1d0
 110 #define     WRITE_MODE__VALUE                           GENMASK(3, 0)
 111
 112 #define COPYBACK_MODE                           0x1e0
 113 #define     COPYBACK_MODE__VALUE                        GENMASK(3, 0)
 114
 115 #define RDWR_EN_LO_CNT                          0x1f0
 116 #define     RDWR_EN_LO_CNT__VALUE                       GENMASK(4, 0)
 117
 118 #define RDWR_EN_HI_CNT                          0x200
 119 #define     RDWR_EN_HI_CNT__VALUE                       GENMASK(4, 0)
 120
 121 #define MAX_RD_DELAY                            0x210
 122 #define     MAX_RD_DELAY__VALUE                         GENMASK(3, 0)
 123
 124 #define CS_SETUP_CNT                            0x220
 125 #define     CS_SETUP_CNT__VALUE                         GENMASK(4, 0)
 126 #define     CS_SETUP_CNT__TWB                           GENMASK(17, 12)
 127
 128 #define SPARE_AREA_SKIP_BYTES                   0x230
 129 #define     SPARE_AREA_SKIP_BYTES__VALUE                GENMASK(5, 0)
 130
 131 #define SPARE_AREA_MARKER                       0x240
 132 #define     SPARE_AREA_MARKER__VALUE                    GENMASK(15, 0)
 133
 134 #define DEVICES_CONNECTED                       0x250
 135 #define     DEVICES_CONNECTED__VALUE                    GENMASK(2, 0)
 136
 137 #define DIE_MASK                                0x260
 138 #define     DIE_MASK__VALUE                             GENMASK(7, 0)
 139
 140 #define FIRST_BLOCK_OF_NEXT_PLANE               0x270
 141 #define     FIRST_BLOCK_OF_NEXT_PLANE__VALUE            GENMASK(15, 0)
 142
 143 #define WRITE_PROTECT                           0x280
 144 #define     WRITE_PROTECT__FLAG                         BIT(0)
 145
 146 #define RE_2_RE                                 0x290
 147 #define     RE_2_RE__VALUE                              GENMASK(5, 0)
 148
 149 #define MANUFACTURER_ID                         0x300
 150 #define     MANUFACTURER_ID__VALUE                      GENMASK(7, 0)
 151
 152 #define DEVICE_ID                               0x310
 153 #define     DEVICE_ID__VALUE                            GENMASK(7, 0)
 154
 155 #define DEVICE_PARAM_0                          0x320
 156 #define     DEVICE_PARAM_0__VALUE                       GENMASK(7, 0)
 157
 158 #define DEVICE_PARAM_1                          0x330
 159 #define     DEVICE_PARAM_1__VALUE                       GENMASK(7, 0)
 160
 161 #define DEVICE_PARAM_2                          0x340
 162 #define     DEVICE_PARAM_2__VALUE                       GENMASK(7, 0)
 163
 164 #define LOGICAL_PAGE_DATA_SIZE                  0x350
 165 #define     LOGICAL_PAGE_DATA_SIZE__VALUE               GENMASK(15, 0)
 166
 167 #define LOGICAL_PAGE_SPARE_SIZE                 0x360
 168 #define     LOGICAL_PAGE_SPARE_SIZE__VALUE              GENMASK(15, 0)
 169
 170 #define REVISION                                0x370
 171 #define     REVISION__VALUE                             GENMASK(15, 0)
 172
 173 #define ONFI_DEVICE_FEATURES                    0x380
 174 #define     ONFI_DEVICE_FEATURES__VALUE                 GENMASK(5, 0)
 175
 176 #define ONFI_OPTIONAL_COMMANDS                  0x390
 177 #define     ONFI_OPTIONAL_COMMANDS__VALUE               GENMASK(5, 0)
 178
 179 #define ONFI_TIMING_MODE                        0x3a0
 180 #define     ONFI_TIMING_MODE__VALUE                     GENMASK(5, 0)
 181
 182 #define ONFI_PGM_CACHE_TIMING_MODE              0x3b0
 183 #define     ONFI_PGM_CACHE_TIMING_MODE__VALUE           GENMASK(5, 0)
 184
 185 #define ONFI_DEVICE_NO_OF_LUNS                  0x3c0
 186 #define     ONFI_DEVICE_NO_OF_LUNS__NO_OF_LUNS          GENMASK(7, 0)
 187 #define     ONFI_DEVICE_NO_OF_LUNS__ONFI_DEVICE         BIT(8)
 188
 189 #define ONFI_DEVICE_NO_OF_BLOCKS_PER_LUN_L      0x3d0
 190 #define     ONFI_DEVICE_NO_OF_BLOCKS_PER_LUN_L__VALUE   GENMASK(15, 0)
 191
 192 #define ONFI_DEVICE_NO_OF_BLOCKS_PER_LUN_U      0x3e0
 193 #define     ONFI_DEVICE_NO_OF_BLOCKS_PER_LUN_U__VALUE   GENMASK(15, 0)
 194
 195 #define FEATURES                                0x3f0
 196 #define     FEATURES__N_BANKS                           GENMASK(1, 0)
 197 #define     FEATURES__ECC_MAX_ERR                       GENMASK(5, 2)
 198 #define     FEATURES__DMA                               BIT(6)
 199 #define     FEATURES__CMD_DMA                           BIT(7)
 200 #define     FEATURES__PARTITION                         BIT(8)
 201 #define     FEATURES__XDMA_SIDEBAND                     BIT(9)
 202 #define     FEATURES__GPREG                             BIT(10)
 203 #define     FEATURES__INDEX_ADDR                        BIT(11)
 204
 205 #define TRANSFER_MODE                           0x400
 206 #define     TRANSFER_MODE__VALUE                        GENMASK(1, 0)
 207
 208 #define INTR_STATUS(bank)                       (0x410 + (bank) * 0x50)
 209 #define INTR_EN(bank)                           (0x420 + (bank) * 0x50)
 210 /* bit[1:0] is used differently depending on IP version */
 211 #define     INTR__ECC_UNCOR_ERR                         BIT(0)  /* new IP */
 212 #define     INTR__ECC_TRANSACTION_DONE                  BIT(0)  /* old IP */
 213 #define     INTR__ECC_ERR                               BIT(1)  /* old IP */
 214 #define     INTR__DMA_CMD_COMP                          BIT(2)
 215 #define     INTR__TIME_OUT                              BIT(3)
 216 #define     INTR__PROGRAM_FAIL                          BIT(4)
 217 #define     INTR__ERASE_FAIL                            BIT(5)
 218 #define     INTR__LOAD_COMP                             BIT(6)
 219 #define     INTR__PROGRAM_COMP                          BIT(7)
 220 #define     INTR__ERASE_COMP                            BIT(8)
 221 #define     INTR__PIPE_CPYBCK_CMD_COMP                  BIT(9)
 222 #define     INTR__LOCKED_BLK                            BIT(10)
 223 #define     INTR__UNSUP_CMD                             BIT(11)
 224 #define     INTR__INT_ACT                               BIT(12)
 225 #define     INTR__RST_COMP                              BIT(13)
 226 #define     INTR__PIPE_CMD_ERR                          BIT(14)
 227 #define     INTR__PAGE_XFER_INC                         BIT(15)
 228 #define     INTR__ERASED_PAGE                           BIT(16)
 229
 230 #define PAGE_CNT(bank)                          (0x430 + (bank) * 0x50)
 231 #define ERR_PAGE_ADDR(bank)                     (0x440 + (bank) * 0x50)
 232 #define ERR_BLOCK_ADDR(bank)                    (0x450 + (bank) * 0x50)
 233
 234 #define ECC_THRESHOLD                           0x600
 235 #define     ECC_THRESHOLD__VALUE                        GENMASK(9, 0)
 236
 237 #define ECC_ERROR_BLOCK_ADDRESS                 0x610
 238 #define     ECC_ERROR_BLOCK_ADDRESS__VALUE              GENMASK(15, 0)
 239
 240 #define ECC_ERROR_PAGE_ADDRESS                  0x620
 241 #define     ECC_ERROR_PAGE_ADDRESS__VALUE               GENMASK(11, 0)
 242 #define     ECC_ERROR_PAGE_ADDRESS__BANK                GENMASK(15, 12)
 243
 244 #define ECC_ERROR_ADDRESS                       0x630
 245 #define     ECC_ERROR_ADDRESS__OFFSET                   GENMASK(11, 0)
 246 #define     ECC_ERROR_ADDRESS__SECTOR                   GENMASK(15, 12)
 247
 248 #define ERR_CORRECTION_INFO                     0x640
 249 #define     ERR_CORRECTION_INFO__BYTE                   GENMASK(7, 0)
 250 #define     ERR_CORRECTION_INFO__DEVICE                 GENMASK(11, 8)
 251 #define     ERR_CORRECTION_INFO__UNCOR                  BIT(14)
 252 #define     ERR_CORRECTION_INFO__LAST_ERR               BIT(15)
 253
 254 #define ECC_COR_INFO(bank)                      (0x650 + (bank) / 2 * 0x10)
 255 #define     ECC_COR_INFO__SHIFT(bank)                   ((bank) % 2 * 8)
 256 #define     ECC_COR_INFO__MAX_ERRORS                    GENMASK(6, 0)
 257 #define     ECC_COR_INFO__UNCOR_ERR                     BIT(7)
 258
 259 #define CFG_DATA_BLOCK_SIZE                     0x6b0
 260
 261 #define CFG_LAST_DATA_BLOCK_SIZE                0x6c0
 262
 263 #define CFG_NUM_DATA_BLOCKS                     0x6d0
 264
 265 #define CFG_META_DATA_SIZE                      0x6e0
 266
 267 #define DMA_ENABLE                              0x700
 268 #define     DMA_ENABLE__FLAG                            BIT(0)
 269
 270 #define IGNORE_ECC_DONE                         0x710
 271 #define     IGNORE_ECC_DONE__FLAG                       BIT(0)
 272
 273 #define DMA_INTR                                0x720
 274 #define DMA_INTR_EN                             0x730
 275 #define     DMA_INTR__TARGET_ERROR                      BIT(0)
 276 #define     DMA_INTR__DESC_COMP_CHANNEL0                BIT(1)
 277 #define     DMA_INTR__DESC_COMP_CHANNEL1                BIT(2)
 278 #define     DMA_INTR__DESC_COMP_CHANNEL2                BIT(3)
 279 #define     DMA_INTR__DESC_COMP_CHANNEL3                BIT(4)
 280 #define     DMA_INTR__MEMCOPY_DESC_COMP                 BIT(5)
 281
 282 #define TARGET_ERR_ADDR_LO                      0x740
 283 #define     TARGET_ERR_ADDR_LO__VALUE                   GENMASK(15, 0)
 284
 285 #define TARGET_ERR_ADDR_HI                      0x750
 286 #define     TARGET_ERR_ADDR_HI__VALUE                   GENMASK(15, 0)
 287
 288 #define CHNL_ACTIVE                             0x760
 289 #define     CHNL_ACTIVE__CHANNEL0                       BIT(0)
 290 #define     CHNL_ACTIVE__CHANNEL1                       BIT(1)
 291 #define     CHNL_ACTIVE__CHANNEL2                       BIT(2)
 292 #define     CHNL_ACTIVE__CHANNEL3                       BIT(3)
 293
 294 /**
 295  * struct denali_chip_sel - per-CS data of Denali NAND
 296  *
 297  * @bank:                  bank id of the controller this CS is connected to
 298  * @hwhr2_and_we_2_re:     value of timing register HWHR2_AND_WE_2_RE
 299  * @tcwaw_and_addr_2_data: value of timing register TCWAW_AND_ADDR_2_DATA
 300  * @re_2_we:               value of timing register RE_2_WE
 301  * @acc_clks:              value of timing register ACC_CLKS
 302  * @rdwr_en_lo_cnt:        value of timing register RDWR_EN_LO_CNT
 303  * @rdwr_en_hi_cnt:        value of timing register RDWR_EN_HI_CNT
 304  * @cs_setup_cnt:          value of timing register CS_SETUP_CNT
 305  * @re_2_re:               value of timing register RE_2_RE
 306  */
 307 struct denali_chip_sel {
 308         int bank;
 309         u32 hwhr2_and_we_2_re;
 310         u32 tcwaw_and_addr_2_data;
 311         u32 re_2_we;
 312         u32 acc_clks;
 313         u32 rdwr_en_lo_cnt;
 314         u32 rdwr_en_hi_cnt;
 315         u32 cs_setup_cnt;
 316         u32 re_2_re;
 317 };
 318
 319 /**
 320  * struct denali_chip - per-chip data of Denali NAND
 321  *
 322  * @chip:  base NAND chip structure
 323  * @node:  node to be used to associate this chip with the controller
 324  * @nsels: the number of CS lines of this chip
 325  * @sels:  the array of per-cs data
 326  */
 327 struct denali_chip {
 328         struct nand_chip chip;
 329         struct list_head node;
 330         unsigned int nsels;
 331         struct denali_chip_sel sels[0];
 332 };
 333
 334 /**
 335  * struct denali_controller - Denali NAND controller data
 336  *
 337  * @controller:     base NAND controller structure
 338  * @dev:            device
 339  * @chips:          the list of chips attached to this controller
 340  * @clk_rate:       frequency of core clock
 341  * @clk_x_rate:     frequency of bus interface clock
 342  * @reg:            base of Register Interface
 343  * @host:           base of Host Data/Command interface
 344  * @complete:       completion used to wait for interrupts
 345  * @irq:            interrupt number
 346  * @irq_mask:       interrupt bits the controller is waiting for
 347  * @irq_status:     interrupt bits of events that have happened
 348  * @irq_lock:       lock to protect @irq_mask and @irq_status
 349  * @dma_avail:      set if DMA engine is available
 350  * @devs_per_cs:    number of devices connected in parallel
 351  * @oob_skip_bytes: number of bytes in OOB skipped by the ECC engine
 352  * @active_bank:    active bank id
 353  * @nbanks:         the number of banks supported by this controller
 354  * @revision:       IP revision
 355  * @caps:           controller capabilities that cannot be detected run-time
 356  * @ecc_caps:       ECC engine capabilities
 357  * @host_read:      callback for read access of Host Data/Command Interface
 358  * @host_write:     callback for write access of Host Data/Command Interface
 359  * @setup_dma:      callback for setup of the Data DMA
 360  */
 361 struct denali_controller {
 362         struct nand_controller controller;
 363         struct device *dev;
 364         struct list_head chips;
 365         unsigned long clk_rate;
 366         unsigned long clk_x_rate;
 367         void __iomem *reg;
 368         void __iomem *host;
 369         struct completion complete;
 370         int irq;
 371         u32 irq_mask;
 372         u32 irq_status;
 373         spinlock_t irq_lock;
 374         bool dma_avail;
 375         int devs_per_cs;
 376         int oob_skip_bytes;
 377         int active_bank;
 378         int nbanks;
 379         unsigned int revision;
 380         unsigned int caps;
 381         const struct nand_ecc_caps *ecc_caps;
 382         u32 (*host_read)(struct denali_controller *denali, u32 addr);
 383         void (*host_write)(struct denali_controller *denali, u32 addr,
 384                            u32 data);
 385         void (*setup_dma)(struct denali_controller *denali, dma_addr_t dma_addr,
 386                           int page, bool write);
 387 };
 388
 389 #define DENALI_CAP_HW_ECC_FIXUP                 BIT(0)
 390 #define DENALI_CAP_DMA_64BIT                    BIT(1)
 391
 392 int denali_calc_ecc_bytes(int step_size, int strength);
 393 int denali_chip_init(struct denali_controller *denali,
 394                      struct denali_chip *dchip);
 395 int denali_init(struct denali_controller *denali);
 396 void denali_remove(struct denali_controller *denali);
 397
 398 #endif /* __DENALI_H__ */