mtd: add data structures for Extended Parameter Page

[karo-tx-linux.git] / include / linux / mtd / nand.h

diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index fbf3bba372728334128d5a6a174f19a917cf9774..01a7f3c71bd04423df2fd405425dcfe9093a7e1d 100644 (file)
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -227,7 +227,10 @@ struct nand_onfi_params {
        __le16 revision;
        __le16 features;
        __le16 opt_cmd;
-       u8 reserved[22];
+       u8 reserved0[2];
+       __le16 ext_param_page_length; /* since ONFI 2.1 */
+       u8 num_of_param_pages;        /* since ONFI 2.1 */
+       u8 reserved1[17];
 
        /* manufacturer information block */
        char manufacturer[12];
@@ -284,6 +287,40 @@ struct nand_onfi_params {
 
 #define ONFI_CRC_BASE  0x4F4E
 
+/* Extended ECC information Block Definition (since ONFI 2.1) */
+struct onfi_ext_ecc_info {
+       u8 ecc_bits;
+       u8 codeword_size;
+       __le16 bb_per_lun;
+       __le16 block_endurance;
+       u8 reserved[2];
+} __packed;
+
+#define ONFI_SECTION_TYPE_0    0       /* Unused section. */
+#define ONFI_SECTION_TYPE_1    1       /* for additional sections. */
+#define ONFI_SECTION_TYPE_2    2       /* for ECC information. */
+struct onfi_ext_section {
+       u8 type;
+       u8 length;
+} __packed;
+
+#define ONFI_EXT_SECTION_MAX 8
+
+/* Extended Parameter Page Definition (since ONFI 2.1) */
+struct onfi_ext_param_page {
+       __le16 crc;
+       u8 sig[4];             /* 'E' 'P' 'P' 'S' */
+       u8 reserved0[10];
+       struct onfi_ext_section sections[ONFI_EXT_SECTION_MAX];
+
+       /*
+        * The actual size of the Extended Parameter Page is in
+        * @ext_param_page_length of nand_onfi_params{}.
+        * The following are the variable length sections.
+        * So we do not add any fields below. Please see the ONFI spec.
+        */
+} __packed;
+
 /**
  * struct nand_hw_control - Control structure for hardware controller (e.g ECC generator) shared among independent devices
  * @lock:               protection lock