mtd: nand: add support for reading ONFI parameters from NAND device

[pandora-kernel.git] / include / linux / mtd / nand.h

diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 29656a3..7666c42 100644 (file)
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -228,6 +228,69 @@ typedef enum {
 /* Keep gcc happy */
 struct nand_chip;
 
+struct nand_onfi_params {
+       /* rev info and features block */
+       u8              sig[4]; /* 'O' 'N' 'F' 'I'  */
+       __le16          revision;
+       __le16          features;
+       __le16          opt_cmd;
+       u8              reserved[22];
+
+       /* manufacturer information block */
+       char            manufacturer[12];
+       char            model[20];
+       u8              jedec_id;
+       __le16          date_code;
+       u8              reserved2[13];
+
+       /* memory organization block */
+       __le32          byte_per_page;
+       __le16          spare_bytes_per_page;
+       __le32          data_bytes_per_ppage;
+       __le16          spare_bytes_per_ppage;
+       __le32          pages_per_block;
+       __le32          blocks_per_lun;
+       u8              lun_count;
+       u8              addr_cycles;
+       u8              bits_per_cell;
+       __le16          bb_per_lun;
+       __le16          block_endurance;
+       u8              guaranteed_good_blocks;
+       __le16          guaranteed_block_endurance;
+       u8              programs_per_page;
+       u8              ppage_attr;
+       u8              ecc_bits;
+       u8              interleaved_bits;
+       u8              interleaved_ops;
+       u8              reserved3[13];
+
+       /* electrical parameter block */
+       u8              io_pin_capacitance_max;
+       __le16          async_timing_mode;
+       __le16          program_cache_timing_mode;
+       __le16          t_prog;
+       __le16          t_bers;
+       __le16          t_r;
+       __le16          t_ccs;
+       __le16          src_sync_timing_mode;
+       __le16          src_ssync_features;
+       __le16          clk_pin_capacitance_typ;
+       __le16          io_pin_capacitance_typ;
+       __le16          input_pin_capacitance_typ;
+       u8              input_pin_capacitance_max;
+       u8              driver_strenght_support;
+       __le16          t_int_r;
+       __le16          t_ald;
+       u8              reserved4[7];
+
+       /* vendor */
+       u8              reserved5[90];
+
+       __le16 crc;
+} __attribute__((packed));
+
+#define ONFI_CRC_BASE  0x4F4E
+
 /**
  * struct nand_hw_control - Control structure for hardware controller (e.g ECC generator) shared among independent devices
  * @lock:               protection lock
@@ -360,6 +423,8 @@ struct nand_buffers {
  * @pagemask:          [INTERN] page number mask = number of (pages / chip) - 1
  * @pagebuf:           [INTERN] holds the pagenumber which is currently in data_buf
  * @subpagesize:       [INTERN] holds the subpagesize
+ * @onfi_version:      [INTERN] holds the chip ONFI version (BCD encoded), non 0 if ONFI supported
+ * @onfi_params:       [INTERN] holds the ONFI page parameter when ONFI is supported, 0 otherwise
  * @ecclayout:         [REPLACEABLE] the default ecc placement scheme
  * @bbt:               [INTERN] bad block table pointer
  * @bbt_td:            [REPLACEABLE] bad block table descriptor for flash lookup
@@ -412,6 +477,9 @@ struct nand_chip {
        int             badblockpos;
        int             badblockbits;
 
+       int             onfi_version;
+       struct nand_onfi_params onfi_params;
+
        flstate_t       state;
 
        uint8_t         *oob_poi;