From 738d61f53781a9b677cb472cbd740aa74e7dcd6d Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Mon, 15 Jan 2007 17:09:14 +0900 Subject: [MTD] OneNAND: Reduce Double Density Package (DDP) operations - DDP code clean-up - Reduce block & bufferram operations in DDP Signed-off-by: Kyungmin Park --- include/linux/mtd/onenand.h | 3 +++ include/linux/mtd/onenand_regs.h | 4 +++- 2 files changed, 6 insertions(+), 1 deletion(-) (limited to 'include/linux') diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h index f775a7af389..a99b2944d26 100644 --- a/include/linux/mtd/onenand.h +++ b/include/linux/mtd/onenand.h @@ -150,6 +150,9 @@ struct onenand_chip { #define ONENAND_SET_SYS_CFG1(v, this) \ (this->write_word(v, this->base + ONENAND_REG_SYS_CFG1)) +#define ONENAND_IS_DDP(this) \ + (this->device_id & ONENAND_DEVICE_IS_DDP) + /* Check byte access in OneNAND */ #define ONENAND_CHECK_BYTE_ACCESS(addr) (addr & 0x1) diff --git a/include/linux/mtd/onenand_regs.h b/include/linux/mtd/onenand_regs.h index e31c8f5d427..5b46cb52d21 100644 --- a/include/linux/mtd/onenand_regs.h +++ b/include/linux/mtd/onenand_regs.h @@ -80,9 +80,11 @@ #define ONENAND_VERSION_PROCESS_SHIFT (8) /* - * Start Address 1 F100h (R/W) + * Start Address 1 F100h (R/W) & Start Address 2 F101h (R/W) */ #define ONENAND_DDP_SHIFT (15) +#define ONENAND_DDP_CHIP0 (0) +#define ONENAND_DDP_CHIP1 (1 << ONENAND_DDP_SHIFT) /* * Start Address 8 F107h (R/W) -- cgit v1.2.3 From 75384b0d9c04dc2d48f45825f84a982eaf5c2f53 Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Thu, 18 Jan 2007 11:10:57 +0900 Subject: [MTD] OneNAND: Update copyrights and code cleanup Update copyrights and code cleanup Signed-off-by: Kyungmin Park --- include/linux/mtd/onenand.h | 2 +- include/linux/mtd/onenand_regs.h | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h index a99b2944d26..60b3534de74 100644 --- a/include/linux/mtd/onenand.h +++ b/include/linux/mtd/onenand.h @@ -1,7 +1,7 @@ /* * linux/include/linux/mtd/onenand.h * - * Copyright (C) 2005-2006 Samsung Electronics + * Copyright (C) 2005-2007 Samsung Electronics * Kyungmin Park * * This program is free software; you can redistribute it and/or modify diff --git a/include/linux/mtd/onenand_regs.h b/include/linux/mtd/onenand_regs.h index 5b46cb52d21..af94719890e 100644 --- a/include/linux/mtd/onenand_regs.h +++ b/include/linux/mtd/onenand_regs.h @@ -3,7 +3,8 @@ * * OneNAND Register header file * - * Copyright (C) 2005-2006 Samsung Electronics + * Copyright (C) 2005-2007 Samsung Electronics + * Kyungmin Park * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as -- cgit v1.2.3 From 9bfbc9b24f663b15149874a94a69ba89b3b7e44c Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Wed, 31 Jan 2007 14:25:21 +0900 Subject: [MTD] OneNAND: Remove unused fields - Remove unused fields - Fix typo Signed-off-by: Kyungmin Park --- include/linux/mtd/onenand.h | 2 -- 1 file changed, 2 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h index 60b3534de74..a5e6c4bf7af 100644 --- a/include/linux/mtd/onenand.h +++ b/include/linux/mtd/onenand.h @@ -63,7 +63,6 @@ struct onenand_bufferram { * partly be set to inform onenand_scan about * @erase_shift: [INTERN] number of address bits in a block * @page_shift: [INTERN] number of address bits in a page - * @ppb_shift: [INTERN] number of address bits in a pages per block * @page_mask: [INTERN] a page per block mask * @bufferram_index: [INTERN] BufferRAM index * @bufferram: [INTERN] BufferRAM info @@ -103,7 +102,6 @@ struct onenand_chip { unsigned int erase_shift; unsigned int page_shift; - unsigned int ppb_shift; /* Pages per block shift */ unsigned int page_mask; unsigned int bufferram_index; -- cgit v1.2.3 From abf3c0f23df6686a984efc8fae7277fcdaffaa32 Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Fri, 2 Feb 2007 09:29:36 +0900 Subject: [MTD] OneNAND: Reduce internal BufferRAM operations It use blockpage instead of a pair (block, page). It can also cover a small chunk access. 0x00, 0x20, 0x40 and so on. And in JFFS2 behavior, sometimes it reads two pages alternatively. e.g., It first reads A page, B page and A page. So we check another bufferram to find requested page. Signed-off-by: Kyungmin Park --- include/linux/mtd/onenand.h | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) (limited to 'include/linux') diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h index a5e6c4bf7af..d8af8a95e58 100644 --- a/include/linux/mtd/onenand.h +++ b/include/linux/mtd/onenand.h @@ -42,14 +42,10 @@ typedef enum { /** * struct onenand_bufferram - OneNAND BufferRAM Data - * @block: block address in BufferRAM - * @page: page address in BufferRAM - * @valid: valid flag + * @blockpage: block & page address in BufferRAM */ struct onenand_bufferram { - int block; - int page; - int valid; + int blockpage; }; /** -- cgit v1.2.3 From 211ac75f5e867ab7a54811a514814149caca42c3 Mon Sep 17 00:00:00 2001 From: Kyungmin Park Date: Wed, 7 Feb 2007 12:15:01 +0900 Subject: [MTD] OneNAND: Error message printing and bad block scan erros Provide the bad block scan with its own read function so that important error messages that are not from the the bad block scan, can always be printed. Signed-off-by: Adrian Hunter Signed-off-by: Kyungmin Park --- include/linux/mtd/bbm.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/mtd/bbm.h b/include/linux/mtd/bbm.h index 1221b7c4415..fff8c53e543 100644 --- a/include/linux/mtd/bbm.h +++ b/include/linux/mtd/bbm.h @@ -92,6 +92,13 @@ struct nand_bbt_descr { */ #define ONENAND_BADBLOCK_POS 0 +/* + * Bad block scanning errors + */ +#define ONENAND_BBT_READ_ERROR 1 +#define ONENAND_BBT_READ_ECC_ERROR 2 +#define ONENAND_BBT_READ_FATAL_ERROR 4 + /** * struct bbm_info - [GENERIC] Bad Block Table data structure * @bbt_erase_shift: [INTERN] number of address bits in a bbt entry -- cgit v1.2.3