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authorRichard Purdie <rpurdie@linux.intel.com>2010-08-27 15:14:24 +0100
committerRichard Purdie <rpurdie@linux.intel.com>2010-08-27 15:29:45 +0100
commit29d6678fd546377459ef75cf54abeef5b969b5cf (patch)
tree8edd65790e37a00d01c3f203f773fe4b5012db18 /meta/recipes-kernel/linux/linux-rp-2.6.26/zylonite_mtd-r0.patch
parentda49de6885ee1bc424e70bc02f21f6ab920efb55 (diff)
downloadopenembedded-core-contrib-29d6678fd546377459ef75cf54abeef5b969b5cf.tar.gz
Major layout change to the packages directory
Having one monolithic packages directory makes it hard to find things and is generally overwhelming. This commit splits it into several logical sections roughly based on function, recipes.txt gives more information about the classifications used. The opportunity is also used to switch from "packages" to "recipes" as used in OpenEmbedded as the term "packages" can be confusing to people and has many different meanings. Not all recipes have been classified yet, this is just a first pass at separating things out. Some packages are moved to meta-extras as they're no longer actively used or maintained. Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Diffstat (limited to 'meta/recipes-kernel/linux/linux-rp-2.6.26/zylonite_mtd-r0.patch')
-rw-r--r--meta/recipes-kernel/linux/linux-rp-2.6.26/zylonite_mtd-r0.patch4093
1 files changed, 4093 insertions, 0 deletions
diff --git a/meta/recipes-kernel/linux/linux-rp-2.6.26/zylonite_mtd-r0.patch b/meta/recipes-kernel/linux/linux-rp-2.6.26/zylonite_mtd-r0.patch
new file mode 100644
index 0000000000..cb5a9c5f72
--- /dev/null
+++ b/meta/recipes-kernel/linux/linux-rp-2.6.26/zylonite_mtd-r0.patch
@@ -0,0 +1,4093 @@
+Gross hacks to make the Zylonite boot from flash in VGA.
+
+Flash driver forward ported to 2.6.14
+
+Index: linux-2.6.23/drivers/mtd/nand/Kconfig
+===================================================================
+--- linux-2.6.23.orig/drivers/mtd/nand/Kconfig 2007-10-09 21:31:38.000000000 +0100
++++ linux-2.6.23/drivers/mtd/nand/Kconfig 2008-02-13 00:59:45.000000000 +0000
+@@ -223,6 +223,10 @@
+ tristate "Support for NAND Flash on Sharp SL Series (C7xx + others)"
+ depends on ARCH_PXA
+
++config MTD_NAND_ZYLONITE
++ tristate "Support for NAND Flash on Zylonite"
++ depends on ARCH_PXA
++
+ config MTD_NAND_BASLER_EXCITE
+ tristate "Support for NAND Flash on Basler eXcite"
+ depends on BASLER_EXCITE
+Index: linux-2.6.23/drivers/mtd/nand/Makefile
+===================================================================
+--- linux-2.6.23.orig/drivers/mtd/nand/Makefile 2007-10-09 21:31:38.000000000 +0100
++++ linux-2.6.23/drivers/mtd/nand/Makefile 2008-02-13 00:59:45.000000000 +0000
+@@ -19,6 +19,7 @@
+ obj-$(CONFIG_MTD_NAND_H1900) += h1910.o
+ obj-$(CONFIG_MTD_NAND_RTC_FROM4) += rtc_from4.o
+ obj-$(CONFIG_MTD_NAND_SHARPSL) += sharpsl.o
++obj-$(CONFIG_MTD_NAND_ZYLONITE) += mhn_nand.o
+ obj-$(CONFIG_MTD_NAND_TS7250) += ts7250.o
+ obj-$(CONFIG_MTD_NAND_NANDSIM) += nandsim.o
+ obj-$(CONFIG_MTD_NAND_CS553X) += cs553x_nand.o
+Index: linux-2.6.23/drivers/mtd/nand/mhn_nand.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23/drivers/mtd/nand/mhn_nand.c 2008-02-13 00:59:45.000000000 +0000
+@@ -0,0 +1,3869 @@
++/*
++ * drivers/mtd/nand/mhn_nand.c
++ *
++ * Copyright (C) 2005 Intel Coporation (chao.xie@intel.com)
++ *
++ * 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
++ * published by the Free Software Foundation.
++ *
++ * Overview:
++ * This is a device driver for the NAND flash device on zylonite board
++ * which utilizes the Samsung K9K1216Q0C parts. This is a 64Mibit NAND
++ * flash device.
++
++ *(C) Copyright 2006 Marvell International Ltd.
++ * All Rights Reserved
++ */
++
++#include <linux/slab.h>
++#include <linux/module.h>
++#include <linux/mtd/mtd.h>
++#include <linux/mtd/nand.h>
++#include <linux/mtd/partitions.h>
++#include <linux/interrupt.h>
++#include <linux/device.h>
++#include <linux/platform_device.h>
++#include <linux/delay.h>
++#include <linux/dma-mapping.h>
++#include <asm/hardware.h>
++#include <asm/io.h>
++#include <asm/irq.h>
++#include <asm/delay.h>
++#include <asm/dma.h>
++#include <asm/arch/mfp.h>
++//#include <asm/arch/cpu-freq-voltage-mhn.h>
++
++//#define NDCR 0xf0000000
++//#define NDCR (*((volatile u32 *)0xf0000000))
++//#define NDCR __REG_2(0x43100000) /* Data Flash Control register */
++#define NDCR_SPARE_EN (0x1<<31)
++#define NDCR_ECC_EN (0x1<<30)
++#define NDCR_DMA_EN (0x1<<29)
++#define NDCR_ND_RUN (0x1<<28)
++#define NDCR_DWIDTH_C (0x1<<27)
++#define NDCR_DWIDTH_M (0x1<<26)
++#define NDCR_PAGE_SZ (0x1<<24)
++#define NDCR_NCSX (0x1<<23)
++#define NDCR_ND_MODE (0x3<<21)
++#define NDCR_NAND_MODE 0x0
++#define NDCR_CLR_PG_CNT (0x1<<20)
++#define NDCR_CLR_ECC ( 0x1<<19)
++#define NDCR_RD_ID_CNT_MASK (0x7<<16)
++#define NDCR_RD_ID_CNT(x) (((x) << 16) & NDCR_RD_ID_CNT_MASK)
++#define NDCR_RA_START (0x1<<15)
++#define NDCR_PG_PER_BLK (0x1<<14)
++#define NDCR_ND_ARB_EN (0x1<<12)
++
++//#define NDSR (*((volatile u32 *)0xf0000014))
++//#define NDSR __REG_2(0x43100014) /* Data Controller Status Register */
++#define NDSR_RDY (0x1<<11)
++#define NDSR_CS0_PAGED (0x1<<10)
++#define NDSR_CS1_PAGED (0x1<<9)
++#define NDSR_CS0_CMDD (0x1<<8)
++#define NDSR_CS1_CMDD (0x1<<7)
++#define NDSR_CS0_BBD (0x1<<6)
++#define NDSR_CS1_BBD (0x1<<5)
++#define NDSR_DBERR (0x1<<4)
++#define NDSR_SBERR (0x1<<3)
++#define NDSR_WRDREQ (0x1<<2)
++#define NDSR_RDDREQ (0x1<<1)
++#define NDSR_WRCMDREQ (0x1)
++
++#define OSCR __REG(0x40A00010) /* OS Timer Counter Register */
++//#define NDCB0 __REG_2(0x43100048) /* Data Controller Command Buffer0 */
++//#define NDCB1 __REG_2(0x4310004C) /* Data Controller Command Buffer1 */
++//#define NDCB2 __REG_2(0x43100050) /* Data Controller Command Buffer2 */
++#define NDCB0_AUTO_RS (0x1<<25)
++#define NDCB0_CSEL (0x1<<24)
++#define NDCB0_CMD_TYPE_MASK (0x7<<21)
++#define NDCB0_CMD_TYPE(x) (((x) << 21) & NDCB0_CMD_TYPE_MASK)
++#define NDCB0_NC (0x1<<20)
++#define NDCB0_DBC (0x1<<19)
++#define NDCB0_ADDR_CYC_MASK (0x7<<16)
++#define NDCB0_ADDR_CYC(x) (((x) << 16) & NDCB0_ADDR_CYC_MASK)
++#define NDCB0_CMD2_MASK (0xff<<8)
++#define NDCB0_CMD1_MASK (0xff)
++#define NDCB0_ADDR_CYC_SHIFT (16)
++#define DCMD0 __REG(0x4000020c) /* DMA Command Address Register Channel 0 */
++#define DCMD1 __REG(0x4000021c) /* DMA Command Address Register Channel 1 */
++#define DCMD2 __REG(0x4000022c) /* DMA Command Address Register Channel 2 */
++#define DCMD3 __REG(0x4000023c) /* DMA Command Address Register Channel 3 */
++#define DCMD4 __REG(0x4000024c) /* DMA Command Address Register Channel 4 */
++#define DCMD5 __REG(0x4000025c) /* DMA Command Address Register Channel 5 */
++#define DCMD6 __REG(0x4000026c) /* DMA Command Address Register Channel 6 */
++#define DCMD7 __REG(0x4000027c) /* DMA Command Address Register Channel 7 */
++#define DCMD8 __REG(0x4000028c) /* DMA Command Address Register Channel 8 */
++#define DCMD9 __REG(0x4000029c) /* DMA Command Address Register Channel 9 */
++#define DCMD10 __REG(0x400002ac) /* DMA Command Address Register Channel 10 */
++#define DCMD11 __REG(0x400002bc) /* DMA Command Address Register Channel 11 */
++#define DCMD12 __REG(0x400002cc) /* DMA Command Address Register Channel 12 */
++#define DCMD13 __REG(0x400002dc) /* DMA Command Address Register Channel 13 */
++#define DCMD14 __REG(0x400002ec) /* DMA Command Address Register Channel 14 */
++#define DCMD15 __REG(0x400002fc) /* DMA Command Address Register Channel 15 */
++#define DCMD(x) __REG2(0x4000020c, (x) << 4)
++#define DCMD_INCSRCADDR (1 << 31) /* Source Address Increment Setting. */
++#define DCMD_INCTRGADDR (1 << 30) /* Target Address Increment Setting. */
++#define DCMD_FLOWSRC (1 << 29) /* Flow Control by the source. */
++#define DCMD_FLOWTRG (1 << 28) /* Flow Control by the target. */
++#define DCMD_STARTIRQEN (1 << 22) /* Start Interrupt Enable */
++#define DCMD_ENDIRQEN (1 << 21) /* End Interrupt Enable */
++#define DCMD_ENDIAN (1 << 18) /* Device Endian-ness. */
++#define DCMD_BURST8 (1 << 16) /* 8 byte burst */
++#define DCMD_BURST16 (2 << 16) /* 16 byte burst */
++#define DCMD_BURST32 (3 << 16) /* 32 byte burst */
++#define DCMD_WIDTH1 (1 << 14) /* 1 byte width */
++#define DCMD_WIDTH2 (2 << 14) /* 2 byte width (HalfWord) */
++#define DCMD_WIDTH4 (3 << 14) /* 4 byte width (Word) */
++#define DCMD_LENGTH 0x01fff /* length mask (max = 8K - 1) */
++#define DCMD_RXPCDR (DCMD_INCTRGADDR|DCMD_FLOWSRC|DCMD_BURST32|DCMD_WIDTH4)
++#define DCMD_RXMCDR (DCMD_INCTRGADDR|DCMD_FLOWSRC|DCMD_BURST32|DCMD_WIDTH4)
++#define DCMD_TXPCDR (DCMD_INCSRCADDR|DCMD_FLOWTRG|DCMD_BURST32|DCMD_WIDTH4)
++#define DRCMR(n) __REG2(0x40000100, (n)<<2)
++#define DRCMR97 __REG(0x40001184) /* Request to Channel Map Register for NAND interface data transmit & receive Request */
++#define DRCMR98 __REG(0x40001188) /* Reserved */
++#define DRCMR99 __REG(0x4000118C) /* Request to Channel Map Register for NAND interface command transmit Request */
++#define DRCMRRXSADR DRCMR2
++#define DRCMRTXSADR DRCMR3
++#define DRCMRRXBTRBR DRCMR4
++#define DRCMRTXBTTHR DRCMR5
++#define DRCMRRXFFRBR DRCMR6
++#define DRCMRTXFFTHR DRCMR7
++#define DRCMRRXMCDR DRCMR8
++#define DRCMRRXMODR DRCMR9
++#define DRCMRTXMODR DRCMR10
++#define DRCMRRXPCDR DRCMR11
++#define DRCMRTXPCDR DRCMR12
++#define DRCMRRXSSDR DRCMR13
++#define DRCMRTXSSDR DRCMR14
++#define DRCMRRXICDR DRCMR17
++#define DRCMRTXICDR DRCMR18
++#define DRCMRRXSTRBR DRCMR19
++#define DRCMRTXSTTHR DRCMR20
++#define DRCMRRXMMC DRCMR21
++#define DRCMRTXMMC DRCMR22
++#define DRCMRRXMMC2 DRCMR93
++#define DRCMRTXMMC2 DRCMR94
++#define DRCMRRXMMC3 DRCMR100
++#define DRCMRTXMMC3 DRCMR101
++#define DRCMRUDC(x) DRCMR((x) + 24)
++#define DRCMR_MAPVLD (1 << 7) /* Map Valid (read / write) */
++#define DRCMR_CHLNUM 0x1f /* mask for Channel Number (read / write) */
++#define DCSR0 __REG(0x40000000) /* DMA Control / Status Register for Channel 0 */
++#define DCSR1 __REG(0x40000004) /* DMA Control / Status Register for Channel 1 */
++#define DCSR2 __REG(0x40000008) /* DMA Control / Status Register for Channel 2 */
++#define DCSR3 __REG(0x4000000c) /* DMA Control / Status Register for Channel 3 */
++#define DCSR4 __REG(0x40000010) /* DMA Control / Status Register for Channel 4 */
++#define DCSR5 __REG(0x40000014) /* DMA Control / Status Register for Channel 5 */
++#define DCSR6 __REG(0x40000018) /* DMA Control / Status Register for Channel 6 */
++#define DCSR7 __REG(0x4000001c) /* DMA Control / Status Register for Channel 7 */
++#define DCSR8 __REG(0x40000020) /* DMA Control / Status Register for Channel 8 */
++#define DCSR9 __REG(0x40000024) /* DMA Control / Status Register for Channel 9 */
++#define DCSR10 __REG(0x40000028) /* DMA Control / Status Register for Channel 10 */
++#define DCSR11 __REG(0x4000002c) /* DMA Control / Status Register for Channel 11 */
++#define DCSR12 __REG(0x40000030) /* DMA Control / Status Register for Channel 12 */
++#define DCSR13 __REG(0x40000034) /* DMA Control / Status Register for Channel 13 */
++#define DCSR14 __REG(0x40000038) /* DMA Control / Status Register for Channel 14 */
++#define DCSR15 __REG(0x4000003c) /* DMA Control / Status Register for Channel 15 */
++#define DCSR16 __REG(0x40000040) /* DMA Control / Status Register for Channel 16 */
++#define DCSR17 __REG(0x40000044) /* DMA Control / Status Register for Channel 17 */
++#define DCSR18 __REG(0x40000048) /* DMA Control / Status Register for Channel 18 */
++#define DCSR19 __REG(0x4000004c) /* DMA Control / Status Register for Channel 19 */
++#define DCSR20 __REG(0x40000050) /* DMA Control / Status Register for Channel 20 */
++#define DCSR21 __REG(0x40000054) /* DMA Control / Status Register for Channel 21 */
++#define DCSR22 __REG(0x40000058) /* DMA Control / Status Register for Channel 22 */
++#define DCSR23 __REG(0x4000005c) /* DMA Control / Status Register for Channel 23 */
++#define DCSR24 __REG(0x40000060) /* DMA Control / Status Register for Channel 24 */
++#define DCSR25 __REG(0x40000064) /* DMA Control / Status Register for Channel 25 */
++#define DCSR26 __REG(0x40000068) /* DMA Control / Status Register for Channel 26 */
++#define DCSR27 __REG(0x4000006c) /* DMA Control / Status Register for Channel 27 */
++#define DCSR28 __REG(0x40000070) /* DMA Control / Status Register for Channel 28 */
++#define DCSR29 __REG(0x40000074) /* DMA Control / Status Register for Channel 29 */
++#define DCSR30 __REG(0x40000078) /* DMA Control / Status Register for Channel 30 */
++#define DCSR31 __REG(0x4000007c) /* DMA Control / Status Register for Channel 31 */
++#define DCSR(x) __REG2(0x40000000, (x) << 2)
++#define DCSR_RUN (1 << 31) /* Run Bit (read / write) */
++#define DCSR_NODESC (1 << 30) /* No-Descriptor Fetch (read / write) */
++#define DCSR_STOPIRQEN (1 << 29) /* Stop Interrupt Enable (read / write) */
++#define DCSR_EORIRQEN (1 << 28) /* End of Receive Interrupt Enable (R/W) */
++#define DCSR_EORJMPEN (1 << 27) /* Jump to next descriptor on EOR */
++#define DCSR_EORSTOPEN (1 << 26) /* STOP on an EOR */
++#define DCSR_SETCMPST (1 << 25) /* Set Descriptor Compare Status */
++#define DCSR_CLRCMPST (1 << 24) /* Clear Descriptor Compare Status */
++#define DCSR_CMPST (1 << 10) /* The Descriptor Compare Status */
++#define DCSR_EORINTR (1 << 9) /* The end of Receive */
++#define DCSR_REQPEND (1 << 8) /* Request Pending (read-only) */
++#define DCSR_RASINTR (1 << 4) /* Request After Channel Stopped */
++#define DCSR_STOPSTATE (1 << 3) /* Stop State (read-only) */
++#define DCSR_ENDINTR (1 << 2) /* End Interrupt (read / write) */
++#define DCSR_STARTINTR (1 << 1) /* Start Interrupt (read / write) */
++#define DCSR_BUSERR (1 << 0) /* Bus Error Interrupt (read / write) */
++#define DDADR(x) __REG2(0x40000200, (x) << 4)
++//#define __REG_2(x) (*((volatile u32 *)io_p2v_2(x)))
++#define IRQ_NAND PXA_IRQ(45)
++#define CKEN_NAND 4 ///< NAND Flash Controller Clock Enable
++
++/* #define CONFIG_MTD_NAND_MONAHANS_DEBUG */
++#ifdef CONFIG_MTD_NAND_MONAHANS_DEBUG
++#define D1(x) do { \
++ printk(KERN_DEBUG "%s: ", __FUNCTION__); \
++ x; \
++ }while(0)
++
++#define DPRINTK(fmt,args...) printk(KERN_DEBUG fmt, ##args )
++#define PRINT_BUF(buf, num) print_buf(buf, num)
++#else
++#define D1(x)
++#define DPRINTK(fmt,args...)
++#define PRINT_BUF(buf, num)
++#endif
++
++/* DFC timing 0 register */
++#define DFC_TIMING_tRP 0
++#define DFC_TIMING_tRH 3
++#define DFC_TIMING_tWP 8
++#define DFC_TIMING_tWH 11
++#define DFC_TIMING_tCS 16
++#define DFC_TIMING_tCH 19
++
++/* DFC timing 1 register */
++#define DFC_TIMING_tAR 0
++#define DFC_TIMING_tWHR 4
++#define DFC_TIMING_tR 16
++
++/* max value for each timing setting in DFC */
++#define DFC_TIMING_MAX_tCH 7
++#define DFC_TIMING_MAX_tCS 7
++#define DFC_TIMING_MAX_tWH 7
++#define DFC_TIMING_MAX_tWP 7
++#define DFC_TIMING_MAX_tRH 7
++#define DFC_TIMING_MAX_tRP 7
++#define DFC_TIMING_MAX_tR 65535
++#define DFC_TIMING_MAX_tWHR 15
++#define DFC_TIMING_MAX_tAR 15
++
++/*
++ * The Data Flash Controller Flash timing structure
++ * For NAND flash used on Zylonite board(Samsung K9K1216Q0C),
++ * user should use value at end of each row of following member
++ * bracketed.
++ */
++struct dfc_flash_timing {
++ uint32_t tCH; /* Enable signal hold time */
++ uint32_t tCS; /* Enable signal setup time */
++ uint32_t tWH; /* ND_nWE high duration */
++ uint32_t tWP; /* ND_nWE pulse time */
++ uint32_t tRH; /* ND_nRE high duration */
++ uint32_t tRP; /* ND_nRE pulse width */
++ uint32_t tR; /* ND_nWE high to ND_nRE low for read */
++ uint32_t tWHR;/* ND_nWE high to ND_nRE low delay for status read */
++ uint32_t tAR; /* ND_ALE low to ND_nRE low delay */
++};
++
++/* DFC command type */
++enum {
++ DFC_CMD_READ = 0x00000000,
++ DFC_CMD_PROGRAM = 0x00200000,
++ DFC_CMD_ERASE = 0x00400000,
++ DFC_CMD_READ_ID = 0x00600000,
++ DFC_CMD_STATUS_READ = 0x00800000,
++ DFC_CMD_RESET = 0x00a00000
++};
++
++/*
++ * The Data Flash Controller Flash specification structure
++ * For NAND flash used on Zylonite board(Samsung K9K1216Q0C),
++ * user should use value at end of each row of following member
++ * bracketed.
++ */
++struct dfc_flash_info {
++ struct dfc_flash_timing timing; /* NAND Flash timing */
++
++ int enable_arbiter;/* Data flash bus arbiter enable (ND_ARB_EN) */
++ uint32_t page_per_block;/* Pages per block (PG_PER_BLK) */
++ uint32_t row_addr_start;/* Row address start position (RA_START) */
++ uint32_t read_id_bytes; /* returned ID bytes(RD_ID_CNT) */
++ uint32_t dfc_mode; /* NAND, CARBONDALE, PIXLEY... (ND_MODE) */
++ uint32_t ncsx; /* Chip select don't care bit (NCSX) */
++ uint32_t page_size; /* Page size in bytes (PAGE_SZ) */
++ uint32_t oob_size; /* OOB size */
++ uint32_t flash_width; /* Width of Flash memory (DWIDTH_M) */
++ uint32_t dfc_width; /* Width of flash controller(DWIDTH_C) */
++ uint32_t num_blocks; /* Number of physical blocks in Flash */
++ uint32_t chip_id;
++
++ /* command codes */
++ uint32_t read1; /* Read */
++ uint32_t read2; /* unused, DFC don't support yet */
++ uint32_t program; /* two cycle command */
++ uint32_t read_status;
++ uint32_t read_id;
++ uint32_t erase; /* two cycle command */
++ uint32_t reset;
++ uint32_t lock; /* lock whole flash */
++ uint32_t unlock; /* two cycle command, supporting partial unlock */
++ uint32_t lock_status; /* read block lock status */
++
++ /* addr2ndcb1 - encode address cycles into register NDCB1 */
++ /* ndbbr2addr - convert register NDBBR to bad block address */
++ int (*addr2ndcb1)(uint16_t cmd, uint32_t addr, uint32_t *p);
++ int (*ndbbr2addr)(uint16_t cmd, uint32_t ndbbr,uint32_t *p);
++};
++
++enum {
++ DFC_FLASH_NULL = 0 ,
++ DFC_FLASH_Samsung_512Mb_X_16 = 1,
++ DFC_FLASH_Micron_1Gb_X_8 = 2,
++ DFC_FLASH_Micron_1Gb_X_16 = 3,
++ DFC_FLASH_STM_1Gb_X_16 = 4,
++ DFC_FLASH_STM_2Gb_X_16 = 5,
++ DFC_FLASH_END,
++};
++
++static int dfc_get_flash_info(int type, struct dfc_flash_info **flash_info);
++
++#define DFC_NDCR 0
++#define DFC_NDTR0CS0 1
++#define DFC_NDTR1CS0 3
++#define DFC_NDSR 5
++#define DFC_NDPCR 6
++#define DFC_NDBDR0 7
++#define DFC_NDBDR1 8
++#define DFC_NDDB 16
++#define DFC_NDCB0 18
++#define DFC_NDCB1 19
++#define DFC_NDCB2 20
++
++/* The Data Flash Controller Mode structure */
++struct dfc_mode {
++ int enable_dma; /* DMA, or nonDMA mode */
++ int enable_ecc; /* ECC on/off */
++ int enable_spare; /* Spare enable */
++ int chip_select; /* CS0 or CS1 */
++};
++
++/* The Data Flash Controller Context structure */
++struct dfc_context {
++ unsigned char __iomem *membase; /* DFC register base */
++ struct dfc_mode *dfc_mode; /* DFC mode */
++ int data_dma_ch; /* Data DMA channel number */
++ int cmd_dma_ch; /* CMD DMA channel number */
++ struct dfc_flash_info *flash_info; /* Flash Spec */
++ struct mtd_info *mtd;
++};
++
++#define NDCB0_DMA_ADDR 0x43100048
++#define NDDB_DMA_ADDR 0x43100040
++
++#define NDSR_MASK 0xFFF
++
++/* The following data is a rough evaluation */
++
++/* microsecond, for readID/readStatus/reset */
++#define NAND_OTHER_TIMEOUT 10
++/* microsecond, for readID/readStatus/reset */
++#define NAND_CMD_TIMEOUT 10
++
++#define BBT_BLOCK_BAD 0x03
++#define BBT_BLOCK_GOOD 0x00
++#define BBT_BLOCK_REV1 0x01
++#define BBT_BLOCK_REV2 0x02
++
++#define BUFLEN (2048 + 64)
++
++/*
++ * DFC data size enumeration transfered from/to controller,
++ * including padding (zero)to be a multiple of 32.
++ */
++enum {
++ DFC_DATA_SIZE_STATUS = 8, /* ReadStatus/ReadBlockLockStatus */
++ DFC_DATA_SIZE_ID = 7, /* ReadID */
++
++ DFC_DATA_SIZE_32 = 32,
++ DFC_DATA_SIZE_512 = 512, /* R/W disabling spare area */
++ DFC_DATA_SIZE_520 = 520, /* Spare=1, ECC=1 */
++ DFC_DATA_SIZE_528 = 528, /* Spare=1, ECC=0 */
++ DFC_DATA_SIZE_544 = 544, /* R/W enabling spare area.(DMA mode)*/
++
++ DFC_DATA_SIZE_64 = 64,
++ DFC_DATA_SIZE_2048 = 2048, /* R/W disabling spare area */
++ DFC_DATA_SIZE_2088 = 2088, /* R/W enabling spare area with ecc */
++ DFC_DATA_SIZE_2112 = 2112, /* R/W enabling spare area without ecc*/
++ DFC_DATA_SIZE_2096 = 2096, /* R/W enabling spare area */
++ DFC_DATA_SIZE_UNUSED = 0xFFFF
++};
++
++/* DFC padding size enumeration transfered from/to controller */
++enum {
++ /*
++ * ReadStatus/ReadBlockLockStatus/ReadID/
++ * Read/Program disabling spare area(Both 512 and 2048)
++ * Read/Program enabling spare area, disabling ECC
++ */
++ DFC_PADDING_SIZE_0 = 0,
++
++ /* Read/program with SPARE_EN=1, ECC_EN=0, pgSize=512 */
++ DFC_PADDING_SIZE_16 = 16,
++ /* for read/program with SPARE_EN=1, ECC_EN=1, pgSize=512 and 2048 */
++ DFC_PADDING_SIZE_24 = 24,
++ DFC_PADDING_SIZE_UNUSED = 0xFFFF
++};
++
++static unsigned int flash_config = DFC_FLASH_NULL;
++
++void dfc_set_timing(struct dfc_context *context, struct dfc_flash_timing *t);
++void dfc_set_dma(struct dfc_context *context);
++void dfc_set_ecc(struct dfc_context *context);
++void dfc_set_spare(struct dfc_context *context);
++
++int dfc_get_pattern(struct dfc_context *context, uint16_t cmd,
++ int *data_size, int *padding);
++
++static int dfc_wait_event(struct dfc_context *context, uint32_t event,
++ uint32_t *event_out, uint32_t timeout, int enable_int);
++
++int dfc_send_cmd(struct dfc_context *context, uint16_t cmd,
++ uint32_t addr, int num_pages);
++
++void dfc_stop(struct dfc_context *context);
++void dfc_read_fifo_partial(struct dfc_context *context, uint8_t *buffer,
++ int nbytes, int data_size);
++void dfc_write_fifo_partial(struct dfc_context *context, uint8_t *buffer,
++ int nbytes, int data_size);
++
++void dfc_read_fifo(struct dfc_context *context, uint8_t *buffer, int nbytes);
++void dfc_write_fifo(struct dfc_context *context, uint8_t *buffer, int nbytes);
++
++void dfc_read_badblock_addr(struct dfc_context *context, uint32_t *bbaddr);
++
++void dfc_clear_int(struct dfc_context *context, uint32_t int_mask);
++void dfc_enable_int(struct dfc_context *context, uint32_t int_mask);
++void dfc_disable_int(struct dfc_context *context, uint32_t int_mask);
++
++/* high level primitives */
++int dfc_init(struct dfc_context *context, int type);
++int dfc_init_no_gpio(struct dfc_context *context, int type);
++
++int dfc_reset_flash(struct dfc_context *context);
++
++int dfc_setup_cmd_dma(struct dfc_context *context,
++ uint16_t cmd, uint32_t addr, int num_pages,
++ uint32_t *buf, uint32_t buf_phys,
++ uint32_t next_desc_phys, uint32_t dma_int_en,
++ struct pxa_dma_desc *dma_desc);
++
++int dfc_setup_data_dma(struct dfc_context *context,
++ uint16_t cmd, uint32_t buf_phys,
++ uint32_t next_desc_phys, uint32_t dma_int_en,
++ struct pxa_dma_desc *dma_desc);
++
++void dfc_start_cmd_dma(struct dfc_context *context,
++ struct pxa_dma_desc *dma_desc);
++void dfc_start_data_dma(struct dfc_context *context,
++ struct pxa_dma_desc *dma_desc);
++static int monahans_df_dev_ready(struct mtd_info *mtd);
++
++#ifdef CONFIG_DVFM
++static int mhn_nand_dvfm_notifier(unsigned cmd, void *client_data, void *info);
++static struct mhn_fv_notifier dvfm_notifier = {
++ .name = "monahans-nand-flash",
++ .priority = 0,
++ .notifier_call = mhn_nand_dvfm_notifier,
++};
++#endif
++
++static unsigned short search_rel_block(int block, struct mtd_info *mtd);
++
++/*****************************************************************************
++ * The DFC registers read/write routines
++ *****************************************************************************/
++static inline void dfc_write(struct dfc_context *context, int offset,
++ unsigned long value)
++{
++ offset <<= 2;
++ writel(value, context->membase + offset);
++}
++
++static inline unsigned int dfc_read(struct dfc_context *context, int offset)
++{
++ offset <<= 2;
++ return __raw_readl(context->membase + offset);
++}
++
++/****************************************************************************
++ * Flash Information
++ ***************************************************************************/
++
++static int Samsung512MbX16Addr2NDCB1(uint16_t cmd, uint32_t addr, uint32_t *p);
++static int Samsung512MbX16NDBBR2Addr(uint16_t cmd, uint32_t ndbbr, uint32_t *p);
++
++static struct dfc_flash_info samsung512MbX16 =
++{
++ .timing = {
++ .tCH = 10, /* tCH, Enable signal hold time */
++ .tCS = 0, /* tCS, Enable signal setup time */
++ .tWH = 20, /* tWH, ND_nWE high duration */
++ .tWP = 40, /* tWP, ND_nWE pulse time */
++ .tRH = 30, /* tRH, ND_nRE high duration */
++ .tRP = 40, /* tRP, ND_nRE pulse width */
++ /* tR = tR+tRR+tWB+1, ND_nWE high to ND_nRE low for read */
++ .tR = 11123,
++ /* tWHR, ND_nWE high to ND_nRE low delay for status read */
++ .tWHR = 110,
++ .tAR = 10, /* tAR, ND_ALE low to ND_nRE low delay */
++ },
++ .enable_arbiter = 1, /* Data flash bus arbiter enable */
++ .page_per_block = 32, /* Pages per block */
++ .row_addr_start = 0, /* Second cycle start, Row address start position */
++ .read_id_bytes = 2, /* 2 bytes, returned ID bytes */
++ .dfc_mode = 0, /* NAND mode */
++ .ncsx = 0,
++ .page_size = 512, /* Page size in bytes */
++ .oob_size = 16, /* OOB size in bytes */
++ .flash_width = 16, /* Width of Flash memory */
++ .dfc_width = 16, /* Width of flash controller */
++ .num_blocks = 4096, /* Number of physical blocks in Flash */
++ .chip_id = 0x46ec,
++
++ /* command codes */
++ .read1 = 0x0000, /* Read */
++ .read2 = 0x0050, /* Read1 unused, current DFC don't support */
++ .program = 0x1080, /* Write, two cycle command */
++ .read_status = 0x0070, /* Read status */
++ .read_id = 0x0090, /* Read ID */
++ .erase = 0xD060, /* Erase, two cycle command */
++ .reset = 0x00FF, /* Reset */
++ .lock = 0x002A, /* Lock whole flash */
++ .unlock = 0x2423, /* Unlock, two cycle command, supporting partial unlock */
++ .lock_status = 0x007A, /* Read block lock status */
++ .addr2ndcb1 = Samsung512MbX16Addr2NDCB1,
++ .ndbbr2addr = Samsung512MbX16NDBBR2Addr,
++};
++
++static int Samsung512MbX16Addr2NDCB1(uint16_t cmd, uint32_t addr, uint32_t *p)
++{
++ uint32_t ndcb1 = 0;
++
++ if (addr >= 0x4000000) return -EINVAL;
++
++ if (cmd == samsung512MbX16.read1 || cmd == samsung512MbX16.program) {
++ ndcb1 = (addr & 0xFF) | ((addr >> 1) & 0x01FFFF00);
++ } else if (cmd == samsung512MbX16.erase) {
++ ndcb1 = ((addr >> 9) & 0x00FFFFFF);
++ }
++
++ *p = ndcb1;
++ return 0;
++
++}
++
++static int Samsung512MbX16NDBBR2Addr(uint16_t cmd, uint32_t ndbbr, uint32_t *p)
++{
++ *p = ndbbr << 9;
++ return 0;
++}
++
++static int Micron1GbX8Addr2NDCB1(uint16_t cmd, uint32_t addr, uint32_t *p);
++static int Micron1GbX8NDBBR2Addr(uint16_t cmd, uint32_t ndbbr, uint32_t *p);
++
++static struct dfc_flash_info micron1GbX8 =
++{
++ .timing = {
++ .tCH = 10, /* tCH, Enable signal hold time */
++ .tCS = 25, /* tCS, Enable signal setup time */
++ .tWH = 15, /* tWH, ND_nWE high duration */
++ .tWP = 25, /* tWP, ND_nWE pulse time */
++ .tRH = 15, /* tRH, ND_nRE high duration */
++ .tRP = 25, /* tRP, ND_nRE pulse width */
++ /* tR = tR+tRR+tWB+1, ND_nWE high to ND_nRE low for read */
++ .tR = 25000,
++ /* tWHR, ND_nWE high to ND_nRE low delay for status read */
++ .tWHR = 60,
++ .tAR = 10, /* tAR, ND_ALE low to ND_nRE low delay */
++ },
++ .enable_arbiter = 1, /* Data flash bus arbiter enable */
++ .page_per_block = 64, /* Pages per block */
++ .row_addr_start = 1, /* Second cycle start, Row address start position */
++ .read_id_bytes = 4, /* Returned ID bytes */
++ .dfc_mode = 0, /* NAND mode */
++ .ncsx = 0,
++ .page_size = 2048, /* Page size in bytes */
++ .oob_size = 64, /* OOB size in bytes */
++ .flash_width = 8, /* Width of Flash memory */
++ .dfc_width = 8, /* Width of flash controller */
++ .num_blocks = 1024, /* Number of physical blocks in Flash */
++ .chip_id = 0xa12c,
++ /* command codes */
++ .read1 = 0x3000, /* Read */
++ .read2 = 0x0050, /* Read1 unused, current DFC don't support */
++ .program = 0x1080, /* Write, two cycle command */
++ .read_status = 0x0070, /* Read status */
++ .read_id = 0x0090, /* Read ID */
++ .erase = 0xD060, /* Erase, two cycle command */
++ .reset = 0x00FF, /* Reset */
++ .lock = 0x002A, /* Lock whole flash */
++ .unlock = 0x2423, /* Unlock, two cycle command, supporting partial unlock */
++ .lock_status = 0x007A, /* Read block lock status */
++ .addr2ndcb1 = Micron1GbX8Addr2NDCB1,
++ .ndbbr2addr = Micron1GbX8NDBBR2Addr,
++};
++
++static int Micron1GbX8Addr2NDCB1(uint16_t cmd, uint32_t addr, uint32_t *p)
++{
++ uint32_t ndcb1 = 0;
++ uint32_t page;
++
++ if (addr >= 0x8000000)
++ return -EINVAL;
++ page = addr / micron1GbX8.page_size;
++ addr = (page / micron1GbX8.page_per_block) << 18 |
++ (page % micron1GbX8.page_per_block) << 12;
++
++ if (cmd == micron1GbX8.read1 || cmd == micron1GbX8.program) {
++ ndcb1 = (addr & 0xFFF) | ((addr << 4) & 0xFFFF0000);
++ }
++ else if (cmd == micron1GbX8.erase) {
++ ndcb1 = ((addr >> 18) << 6) & 0xFFFF;
++ }
++
++ *p = ndcb1;
++ return 0;
++}
++
++static int Micron1GbX8NDBBR2Addr(uint16_t cmd, uint32_t ndbbr, uint32_t *p)
++{
++ if (cmd == micron1GbX8.read1 || cmd == micron1GbX8.program) {
++ *p = ((ndbbr & 0xF) << 8) | ((ndbbr >> 8) << 16);
++ }
++ else if (cmd == micron1GbX8.erase) {
++ *p = (ndbbr >> 6) << 18;
++ }
++
++
++ return 0;
++}
++
++
++static int Micron1GbX16Addr2NDCB1(uint16_t cmd, uint32_t addr, uint32_t *p);
++static int Micron1GbX16NDBBR2Addr(uint16_t cmd, uint32_t ndbbr, uint32_t *p);
++
++static struct dfc_flash_info micron1GbX16 =
++{
++ .timing = {
++ .tCH = 10, /* tCH, Enable signal hold time */
++ .tCS = 25, /* tCS, Enable signal setup time */
++ .tWH = 15, /* tWH, ND_nWE high duration */
++ .tWP = 25, /* tWP, ND_nWE pulse time */
++ .tRH = 15, /* tRH, ND_nRE high duration */
++ .tRP = 25, /* tRP, ND_nRE pulse width */
++ /* tR = tR+tRR+tWB+1, ND_nWE high to ND_nRE low for read */
++ .tR = 25000,
++ /* tWHR, ND_nWE high to ND_nRE low delay for status read */
++ .tWHR = 60,
++ .tAR = 10, /* tAR, ND_ALE low to ND_nRE low delay */
++ },
++ .enable_arbiter = 1, /* Data flash bus arbiter enable */
++ .page_per_block = 64, /* Pages per block */
++ .row_addr_start = 1, /* Second cycle start, Row address start position */
++ .read_id_bytes = 4, /* Returned ID bytes */
++ .dfc_mode = 0, /* NAND mode */
++ .ncsx = 0,
++ .page_size = 2048, /* Page size in bytes */
++ .oob_size = 64, /* OOB size in bytes */
++ .flash_width = 16, /* Width of Flash memory */
++ .dfc_width = 16, /* Width of flash controller */
++ .num_blocks = 1024, /* Number of physical blocks in Flash */
++ .chip_id = 0xb12c,
++
++ /* command codes */
++ .read1 = 0x3000, /* Read */
++ .read2 = 0x0050, /* Read1 unused, current DFC don't support */
++ .program = 0x1080, /* Write, two cycle command */
++ .read_status = 0x0070, /* Read status */
++ .read_id = 0x0090, /* Read ID */
++ .erase = 0xD060, /* Erase, two cycle command */
++ .reset = 0x00FF, /* Reset */
++ .lock = 0x002A, /* Lock whole flash */
++ .unlock = 0x2423, /* Unlock, two cycle command, supporting partial unlock */
++ .lock_status = 0x007A, /* Read block lock status */
++ .addr2ndcb1 = Micron1GbX16Addr2NDCB1,
++ .ndbbr2addr = Micron1GbX16NDBBR2Addr,
++};
++
++static int Micron1GbX16Addr2NDCB1(uint16_t cmd, uint32_t addr, uint32_t *p)
++{
++ uint32_t ndcb1 = 0;
++ uint32_t page;
++
++ if (addr >= 0x8000000)
++ return -EINVAL;
++ page = addr / micron1GbX16.page_size;
++ addr = (page / micron1GbX16.page_per_block) << 17 |
++ (page % micron1GbX16.page_per_block) << 11;
++
++ if (cmd == micron1GbX16.read1 || cmd == micron1GbX16.program) {
++ ndcb1 = (addr & 0x7FF) | ((addr << 5) & 0xFFFF0000);
++ }
++ else if (cmd == micron1GbX16.erase) {
++ ndcb1 = ((addr >> 17) << 6) & 0xFFFF;
++ }
++ *p = ndcb1;
++ return 0;
++}
++
++static int Micron1GbX16NDBBR2Addr(uint16_t cmd, uint32_t ndbbr, uint32_t *p)
++{
++ if (cmd == micron1GbX16.read1 || cmd == micron1GbX16.program) {
++ *p = ((ndbbr & 0x7) << 8) | ((ndbbr >> 8) << 16);
++ }
++ else if (cmd == micron1GbX16.erase) {
++ *p = (ndbbr >> 6) << 17;
++ }
++
++ return 0;
++}
++
++static int STM1GbX16Addr2NDCB1(uint16_t cmd, uint32_t addr, uint32_t *p);
++static int STM1GbX16NDBBR2Addr(uint16_t cmd, uint32_t ndbbr, uint32_t *p);
++
++static struct dfc_flash_info stm1GbX16 =
++{
++ .timing = {
++ .tCH = 10, /* tCH, Enable signal hold time */
++ .tCS = 10, /* tCS, Enable signal setup time */
++ .tWH = 20, /* tWH, ND_nWE high duration */
++ .tWP = 25, /* tWP, ND_nWE pulse time */
++ .tRH = 20, /* tRH, ND_nRE high duration */
++ .tRP = 25, /* tRP, ND_nRE pulse width */
++ /* tR = tR+tRR+tWB+1, ND_nWE high to ND_nRE low for read */
++ .tR = 25000,
++ /* tWHR, ND_nWE high to ND_nRE low delay for status read */
++ .tWHR = 60,
++ .tAR = 10, /* tAR, ND_ALE low to ND_nRE low delay */
++ },
++ .enable_arbiter = 1, /* Data flash bus arbiter enable */
++ .page_per_block = 64, /* Pages per block */
++ .row_addr_start = 1, /* Second cycle start, Row address start position */
++ .read_id_bytes = 4, /* Returned ID bytes */
++ .dfc_mode = 0, /* NAND mode */
++ .ncsx = 0,
++ .page_size = 2048, /* Page size in bytes */
++ .oob_size = 64, /* OOB size in bytes */
++ .flash_width = 16, /* Width of Flash memory */
++ .dfc_width = 16, /* Width of flash controller */
++ .num_blocks = 1024, /* Number of physical blocks in Flash */
++ .chip_id = 0xb120,
++
++ /* command codes */
++ .read1 = 0x3000, /* Read */
++ .read2 = 0x0050, /* Read1 unused, current DFC don't support */
++ .program = 0x1080, /* Write, two cycle command */
++ .read_status = 0x0070, /* Read status */
++ .read_id = 0x0090, /* Read ID */
++ .erase = 0xD060, /* Erase, two cycle command */
++ .reset = 0x00FF, /* Reset */
++ .lock = 0x002A, /* Lock whole flash */
++ .unlock = 0x2423, /* Unlock, two cycle command, supporting partial unlock */
++ .lock_status = 0x007A, /* Read block lock status */
++ .addr2ndcb1 = STM1GbX16Addr2NDCB1,
++ .ndbbr2addr = STM1GbX16NDBBR2Addr,
++};
++
++static int STM1GbX16Addr2NDCB1(uint16_t cmd, uint32_t addr, uint32_t *p)
++{
++ uint32_t ndcb1 = 0;
++ uint32_t page;
++
++ if (addr >= 0x8000000)
++ return -EINVAL;
++ page = addr / stm1GbX16.page_size;
++ addr = (page / stm1GbX16.page_per_block) << 17 |
++ (page % stm1GbX16.page_per_block) << 11;
++
++ if (cmd == stm1GbX16.read1 || cmd == stm1GbX16.program) {
++ ndcb1 = (addr & 0x7FF) | ((addr << 5) & 0xFFFF0000);
++ }
++ else if (cmd == stm1GbX16.erase) {
++ ndcb1 = ((addr >> 17) << 6) & 0xFFFF;
++ }
++ *p = ndcb1;
++ return 0;
++}
++
++static int STM1GbX16NDBBR2Addr(uint16_t cmd, uint32_t ndbbr, uint32_t *p)
++{
++ if (cmd == stm1GbX16.read1 || cmd == stm1GbX16.program) {
++ *p = ((ndbbr & 0x7) << 8) | ((ndbbr >> 8) << 16);
++ }
++ else if (cmd == stm1GbX16.erase) {
++ *p = (ndbbr >> 6) << 17;
++ }
++
++ return 0;
++}
++
++static int STM2GbX16Addr2NDCB1(uint16_t cmd, uint32_t addr, uint32_t *p);
++static int STM2GbX16NDBBR2Addr(uint16_t cmd, uint32_t ndbbr, uint32_t *p);
++
++static struct dfc_flash_info stm2GbX16 =
++{
++ .timing = {
++ .tCH = 10, /* tCH, Enable signal hold time */
++ .tCS = 10, /* tCS, Enable signal setup time */
++ .tWH = 20, /* tWH, ND_nWE high duration */
++ .tWP = 25, /* tWP, ND_nWE pulse time */
++ .tRH = 20, /* tRH, ND_nRE high duration */
++ .tRP = 25, /* tRP, ND_nRE pulse width */
++ /* tR = tR+tRR+tWB+1, ND_nWE high to ND_nRE low for read */
++ .tR = 25000,
++ /* tWHR, ND_nWE high to ND_nRE low delay for status read */
++ .tWHR = 60,
++ .tAR = 10, /* tAR, ND_ALE low to ND_nRE low delay */
++ },
++ .enable_arbiter = 1, /* Data flash bus arbiter enable */
++ .page_per_block = 64, /* Pages per block */
++ .row_addr_start = 1, /* Second cycle start, Row address start position */
++ .read_id_bytes = 4, /* Returned ID bytes */
++ .dfc_mode = 0, /* NAND mode */
++ .ncsx = 0,
++ .page_size = 2048, /* Page size in bytes */
++ .oob_size = 64, /* OOB size in bytes */
++ .flash_width = 16, /* Width of Flash memory */
++ .dfc_width = 16, /* Width of flash controller */
++ .num_blocks = 2048, /* Number of physical blocks in Flash */
++ .chip_id = 0xca20,
++
++ /* command codes */
++ .read1 = 0x3000, /* Read */
++ .read2 = 0x0050, /* Read1 unused, current DFC don't support */
++ .program = 0x1080, /* Write, two cycle command */
++ .read_status = 0x0070, /* Read status */
++ .read_id = 0x0090, /* Read ID */
++ .erase = 0xD060, /* Erase, two cycle command */
++ .reset = 0x00FF, /* Reset */
++ .lock = 0x002A, /* Lock whole flash */
++ .unlock = 0x2423, /* Unlock, two cycle command, supporting partial unlock */
++ .lock_status = 0x007A, /* Read block lock status */
++ .addr2ndcb1 = STM2GbX16Addr2NDCB1,
++ .ndbbr2addr = STM2GbX16NDBBR2Addr,
++};
++
++static int STM2GbX16Addr2NDCB1(uint16_t cmd, uint32_t addr, uint32_t *p)
++{
++ uint32_t ndcb1 = 0;
++ uint32_t page;
++
++ if (addr >= 0x8000000)
++ return -EINVAL;
++ page = addr / stm2GbX16.page_size;
++ addr = (page / stm2GbX16.page_per_block) << 17 |
++ (page % stm2GbX16.page_per_block) << 11;
++
++ if (cmd == stm2GbX16.read1 || cmd == stm2GbX16.program) {
++ ndcb1 = (addr & 0x7FF) | ((addr << 5) & 0xFFFF0000);
++ }
++ else if (cmd == stm2GbX16.erase) {
++ ndcb1 = ((addr >> 17) << 6) & 0xFFFF;
++ }
++ *p = ndcb1;
++ return 0;
++}
++
++static int STM2GbX16NDBBR2Addr(uint16_t cmd, uint32_t ndbbr, uint32_t *p)
++{
++ if (cmd == stm2GbX16.read1 || cmd == stm2GbX16.program) {
++ *p = ((ndbbr & 0x7) << 8) | ((ndbbr >> 8) << 16);
++ }
++ else if (cmd == stm2GbX16.erase) {
++ *p = (ndbbr >> 6) << 17;
++ }
++
++ return 0;
++}
++
++static struct {
++ int type;
++ struct dfc_flash_info *flash_info;
++} type_info[] = {
++ { DFC_FLASH_Samsung_512Mb_X_16, &samsung512MbX16},
++ { DFC_FLASH_Micron_1Gb_X_8, &micron1GbX8},
++ { DFC_FLASH_Micron_1Gb_X_16, &micron1GbX16},
++ { DFC_FLASH_STM_1Gb_X_16, &stm1GbX16},
++ { DFC_FLASH_STM_2Gb_X_16, &stm2GbX16},
++ { DFC_FLASH_NULL, NULL},
++};
++
++int dfc_get_flash_info(int type, struct dfc_flash_info **flash_info)
++{
++ uint32_t i = 0;
++
++ while(type_info[i].type != DFC_FLASH_NULL) {
++ if (type_info[i].type == type) {
++ *flash_info = type_info[i].flash_info;
++ return 0;
++ }
++ i++;
++ }
++ *flash_info = NULL;
++ return -EINVAL;
++}
++
++/******************************************************************************
++ dfc_set_timing
++
++ Description:
++ This function sets flash timing property in DFC timing register
++ according to input timing value embodied in context structure.
++ It is called once during the hardware initialization.
++ Input Parameters:
++ Output Parameters:
++ None
++ Returns:
++ None
++*******************************************************************************/
++//#if defined(CONFIG_CPU_MONAHANS_L) || defined(CONFIG_CPU_MONAHANS_LV)
++#define DFC_CLOCK 208
++//#else
++//#define DFC_CLOCK 104
++//#endif
++#define CLOCK_NS DFC_CLOCK/1000
++
++void dfc_set_timing(struct dfc_context *context, struct dfc_flash_timing *t)
++{
++ struct dfc_flash_timing timing = *t;
++
++ uint32_t r0 = 0;
++ uint32_t r1 = 0;
++
++ /*
++ * num of clock cycles = time (ns) / one clock sycle (ns) + 1
++ * - integer division will truncate the result, so add a 1 in all cases
++ * - subtract the extra 1 cycle added to all register timing values
++ */
++ timing.tCH = min(((int) (timing.tCH * CLOCK_NS) + 1),
++ DFC_TIMING_MAX_tCH);
++ timing.tCS = min(((int) (timing.tCS * CLOCK_NS) + 1),
++ DFC_TIMING_MAX_tCS);
++ timing.tWH = min(((int) (timing.tWH * CLOCK_NS) + 1),
++ DFC_TIMING_MAX_tWH);
++ timing.tWP = min(((int) (timing.tWP * CLOCK_NS) + 1),
++ DFC_TIMING_MAX_tWP);
++ timing.tRH = min(((int) (timing.tRH * CLOCK_NS) + 1),
++ DFC_TIMING_MAX_tRH);
++ timing.tRP = min(((int) (timing.tRP * CLOCK_NS) + 1),
++ DFC_TIMING_MAX_tRP);
++
++ r0 = (timing.tCH << DFC_TIMING_tCH) |
++ (timing.tCS << DFC_TIMING_tCS) |
++ (timing.tWH << DFC_TIMING_tWH) |
++ (timing.tWP << DFC_TIMING_tWP) |
++ (timing.tRH << DFC_TIMING_tRH) |
++ (timing.tRP << DFC_TIMING_tRP);
++
++ dfc_write(context, DFC_NDTR0CS0, r0);
++
++ timing.tR = min(((int) (timing.tR * CLOCK_NS) + 1),
++ DFC_TIMING_MAX_tR);
++ timing.tWHR = min(((int) (timing.tWHR * CLOCK_NS) + 1),
++ DFC_TIMING_MAX_tWHR);
++ timing.tAR = min(((int) (timing.tAR * CLOCK_NS) + 1),
++ DFC_TIMING_MAX_tAR);
++
++ r1 = (timing.tR << DFC_TIMING_tR) |
++ (timing.tWHR << DFC_TIMING_tWHR) |
++ (timing.tAR << DFC_TIMING_tAR);
++
++ dfc_write(context, DFC_NDTR1CS0, r1);
++ return;
++}
++
++/******************************************************************************
++ dfc_set_dma
++
++ Description:
++ Enables or Disables DMA in line with setting in DFC mode of context
++ structure. DMA mode of DFC. Performs a read-modify-write operation that
++ only changes the driven DMA_EN bit field In DMA mode, all commands and
++ data are transferred by DMA. DMA can be enable/disable on the fly.
++ Input Parameters:
++ context -Pointer to DFC context structure
++ Output Parameters:
++ None
++ Returns:
++ None
++*******************************************************************************/
++void
++dfc_set_dma(struct dfc_context* context)
++{
++ uint32_t ndcr;
++
++ ndcr = dfc_read(context, DFC_NDCR);
++ if (context->dfc_mode->enable_dma)
++ ndcr |= NDCR_DMA_EN;
++ else
++ ndcr &= ~NDCR_DMA_EN;
++
++ dfc_write(context, DFC_NDCR, ndcr);
++
++ /* Read again to make sure write work */
++ ndcr = dfc_read(context, DFC_NDCR);
++ return;
++}
++
++
++/******************************************************************************
++ dfc_set_ecc
++
++ Description:
++ This function enables or disables hardware ECC capability of DFC in line
++ with setting in DFC mode of context structure.
++ Input Parameters:
++ context -Pointer to DFC context structure
++ Output Parameters:
++ None
++ Returns:
++ None
++*******************************************************************************/
++void
++dfc_set_ecc(struct dfc_context* context)
++{
++ uint32_t ndcr;
++
++ ndcr = dfc_read(context, DFC_NDCR);
++ if (context->dfc_mode->enable_ecc)
++ ndcr |= NDCR_ECC_EN;
++ else
++ ndcr &= ~NDCR_ECC_EN;
++
++ dfc_write(context, DFC_NDCR, ndcr);
++
++ /* Read again to make sure write work */
++ ndcr = dfc_read(context, DFC_NDCR);
++ return;
++}
++
++/******************************************************************************
++ dfc_set_spare
++
++ Description:
++ This function enables or disables accesses to spare area of NAND Flash
++ through DFC in line with setting in DFC mode of context structure.
++ Input Parameters:
++ context -Pointer to DFC context structure
++ Output Parameters:
++ None
++ Returns:
++ None
++*******************************************************************************/
++void
++dfc_set_spare(struct dfc_context* context)
++{
++ uint32_t ndcr;
++
++ ndcr = dfc_read(context, DFC_NDCR);
++ if (context->dfc_mode->enable_spare)
++ ndcr |= NDCR_SPARE_EN;
++ else
++ ndcr &= ~NDCR_SPARE_EN;
++
++ dfc_write(context, DFC_NDCR, ndcr);
++
++ /* Read again to make sure write work */
++ ndcr = dfc_read(context, DFC_NDCR);
++ return;
++}
++
++static unsigned int get_delta (unsigned int start)
++{
++ unsigned int stop = OSCR;
++ return (stop - start);
++}
++
++static int dfc_wait_event(struct dfc_context *context, uint32_t event,
++ uint32_t *event_out, uint32_t timeout, int enable_int)
++{
++ uint32_t ndsr;
++ uint32_t to = 3 * timeout; /* 3 ticks ~ 1us */
++ int status;
++ int start = OSCR;
++
++ if (enable_int)
++ dfc_enable_int(context, event);
++
++ while (1) {
++ ndsr = dfc_read(context, DFC_NDSR);
++ ndsr &= NDSR_MASK;
++ if (ndsr & event) {
++ /* event happened */
++ *event_out = ndsr & event;
++ dfc_clear_int(context, *event_out);
++ status = 0;
++ break;
++ } else if (get_delta(start) > to) {
++ status = -ETIME;
++ break;
++ }
++ }
++
++ if (enable_int)
++ dfc_disable_int(context, event);
++ return status;
++}
++
++/******************************************************************************
++ dfc_get_pattern
++
++ Description:
++ This function is used to retrieve buffer size setting for a transaction
++ based on cmd.
++ Input Parameters:
++ context - Pointer to DFC context structure
++ cmd
++ Specifies type of command to be sent to NAND flash .The LSB of this
++ parameter defines the first command code for 2-cycles command. The
++ MSB defines the second command code for 2-cycles command. If MSB is
++ set to zero, this indicates that one cycle command
++ Output Parameters:
++ data_size
++ It is used to retrieve length of data transferred to/from DFC,
++ which includes padding bytes
++ padding
++ It is used to retrieve how many padding bytes there should be
++ in buffer of data_size.
++ Returns:
++ 0
++ If size setting is returned successfully
++ -EINVAL
++ If page size specified in flash spec of context structure is not 512 or
++ 2048;If specified command index is not read1/program/erase/reset/readID/
++ readStatus.
++*******************************************************************************/
++int dfc_get_pattern(struct dfc_context *context, uint16_t cmd,
++ int *data_size, int *padding)
++{
++ struct dfc_mode* dfc_mode = context->dfc_mode;
++ struct dfc_flash_info * flash_info = context->flash_info;
++ uint32_t page_size = context->flash_info->page_size; /* 512 or 2048 */
++
++ if (cmd == flash_info->read1 ||
++ cmd == flash_info->program) {
++ if (512 == page_size) {
++ /* add for DMA */
++ if (dfc_mode->enable_dma) {
++ *data_size = DFC_DATA_SIZE_544;
++ if (dfc_mode->enable_ecc)
++ *padding = DFC_PADDING_SIZE_24;
++ else
++ *padding = DFC_PADDING_SIZE_16;
++ } else if (!dfc_mode->enable_spare) {
++ *data_size = DFC_DATA_SIZE_512;
++ *padding = DFC_PADDING_SIZE_0;
++ } else {
++
++ if (dfc_mode->enable_ecc)
++ *data_size = DFC_DATA_SIZE_520;
++ else
++ *data_size = DFC_DATA_SIZE_528;
++
++ *padding = DFC_PADDING_SIZE_0;
++ }
++ } else if (2048 == page_size) {
++ /* add for DMA */
++ if (dfc_mode->enable_dma) {
++ *data_size = DFC_DATA_SIZE_2112;
++ if (dfc_mode->enable_ecc)
++ *padding = DFC_PADDING_SIZE_24;
++ else
++ *padding = DFC_PADDING_SIZE_0;
++ } else if (!dfc_mode->enable_spare) {
++ *data_size = DFC_DATA_SIZE_2048;
++ *padding = DFC_PADDING_SIZE_0;
++ } else {
++
++ if (dfc_mode->enable_ecc)
++ *data_size = DFC_DATA_SIZE_2088;
++ else
++ *data_size = DFC_DATA_SIZE_2112;
++
++ *padding = DFC_PADDING_SIZE_0;
++ }
++ } else /* if the page_size is neither 512 or 2048 */
++ return -EINVAL;
++ } else if (cmd == flash_info->read_id) {
++ *data_size = DFC_DATA_SIZE_ID;
++ *padding = DFC_PADDING_SIZE_0;
++ } else if(cmd == flash_info->read_status) {
++ *data_size = DFC_DATA_SIZE_STATUS;
++ *padding = DFC_PADDING_SIZE_0;
++ } else if (cmd == flash_info->erase || cmd == flash_info->reset) {
++ *data_size = DFC_DATA_SIZE_UNUSED;
++ *padding = DFC_PADDING_SIZE_UNUSED;
++ } else
++ return -EINVAL;
++ return 0;
++}
++
++
++/******************************************************************************
++ dfc_send_cmd
++
++ Description:
++ This function configures DFC to send command through DFC to NAND flash
++ Input Parameters:
++ context
++ Pointer to DFC context structure
++ cmd
++ Specifies type of command to be sent to NAND flash .The LSB of this
++ parameter defines the first command code for 2-cycles command. The
++ MSB defines the second command code for 2-cycles command. If MSB is
++ set to zero, this indicates that one cycle command
++ addr
++ Address sent out to the flash device withthis command. For page read/
++ program commands , 4-cycles address is sent. For erase command only
++ 3-cycles address is sent. If it is equal to 0xFFFFFFFF, the address
++ should not be used.
++ num_pages
++ It specifies the number of pages of data to be transferred for
++ a program or read commands. Unused for any other commands than
++ read/program.
++
++ Output Parameters:
++ None
++ Returns:
++ 0
++ If size setting is returned successfully
++ -EINVAL
++ If specified command index is not read1/program/erase/reset/readID/
++ readStatus.
++*******************************************************************************/
++int dfc_send_cmd(struct dfc_context *context, uint16_t cmd,
++ uint32_t addr, int num_pages)
++{
++ struct dfc_flash_info *flash_info = context->flash_info;
++ struct dfc_mode *dfc_mode = context->dfc_mode;
++ uint8_t cmd2;
++ uint32_t event_out;
++ uint32_t ndcb0=0, ndcb1=0, ndcb2=0, ndcr;
++ int status;
++
++ /* It is a must to set ND_RUN firstly, then write command buffer
++ * If conversely,it does not work
++ */
++ dfc_write(context, DFC_NDSR, NDSR_MASK);
++
++ /* Set ND_RUN */
++ ndcr = dfc_read(context, DFC_NDCR);
++ dfc_write(context, DFC_NDCR, (ndcr | NDCR_ND_RUN));
++
++ // Wait for write command request
++ status = dfc_wait_event(context, NDSR_WRCMDREQ,
++ &event_out, NAND_CMD_TIMEOUT, 0);
++
++ if (status) /* Timeout */
++ return status;
++
++ cmd2 = (cmd>>8) & 0xFF;
++ ndcb0 = cmd | (dfc_mode->chip_select<<24) | ((cmd2?1:0)<<19);
++
++ if (cmd == flash_info->read1) {
++ if (0xFFFFFFFF != addr) {
++ ndcb0 |= NDCB0_ADDR_CYC(4);
++ status = flash_info->addr2ndcb1(cmd, addr, &ndcb1);
++ if (status)
++ return status;
++ ndcb2 = (num_pages - 1) << 8;
++ }
++ } else if (cmd == flash_info->program) {
++ ndcb0 |= NDCB0_CMD_TYPE(1) | NDCB0_AUTO_RS;
++ ndcb0 |= NDCB0_ADDR_CYC(4);
++ status = flash_info->addr2ndcb1(cmd, addr, &ndcb1);
++ if (status)
++ return status;
++ ndcb2 = (num_pages-1) << 8;
++ } else if (cmd == flash_info->erase) {
++ ndcb0 |= NDCB0_CMD_TYPE(2) | NDCB0_AUTO_RS;
++ ndcb0 |= NDCB0_ADDR_CYC(3);
++ status = flash_info->addr2ndcb1(cmd, addr, &ndcb1);
++ if (status)
++ return status;
++ } else if (cmd == flash_info->read_id) {
++ ndcb0 |= NDCB0_CMD_TYPE(3);
++ } else if(cmd == flash_info->read_status) {
++ ndcb0 |= NDCB0_CMD_TYPE(4);
++ } else if(cmd == flash_info->reset) {
++ ndcb0 |= NDCB0_CMD_TYPE(5);
++ } else if (cmd == flash_info->lock) {
++ ndcb0 |= NDCB0_CMD_TYPE(5);
++ } else
++ return -EINVAL;
++
++ /* Write to DFC command register */
++ dfc_write(context, DFC_NDCB0, ndcb0);
++ dfc_write(context, DFC_NDCB0, ndcb1);
++ dfc_write(context, DFC_NDCB0, ndcb2);
++
++ return 0;
++}
++
++/******************************************************************************
++ dfc_stop
++
++ Description:
++ This function clears ND_RUN bit of NDCR.
++ Input Parameters:
++ context--Pointer to DFC context structure
++ Output Parameters:
++ None
++ Returns:
++ None
++*******************************************************************************/
++void dfc_stop(struct dfc_context *context)
++{
++ unsigned int ndcr;
++ ndcr = dfc_read(context, DFC_NDCR);
++ dfc_write(context, DFC_NDCR, (ndcr & ~NDCR_ND_RUN));
++ ndcr = dfc_read(context, DFC_NDCR);
++
++ return;
++}
++
++int dfc_setup_cmd_dma(struct dfc_context *context,
++ uint16_t cmd, uint32_t addr, int num_pages,
++ uint32_t *buf, uint32_t buf_phys,
++ uint32_t next_desc_phys, uint32_t dma_int_en,
++ struct pxa_dma_desc *dma_desc)
++{
++ struct dfc_flash_info *flash_info = context->flash_info;
++ struct dfc_mode *dfc_mode = context->dfc_mode;
++ uint8_t cmd2;
++ uint32_t event_out;
++ uint32_t ndcb0=0, ndcb1=0, ndcb2=0, ndcr;
++ int status;
++
++ /*
++ * It is a must to set ND_RUN firstly, then write command buffer
++ * If conversely,it does not work
++ */
++ dfc_write(context, DFC_NDSR, NDSR_MASK);
++
++ /* Set ND_RUN */
++ ndcr = dfc_read(context, DFC_NDCR);
++ ndcr |= NDCR_ND_RUN;
++ dfc_write(context, DFC_NDCR, ndcr);
++
++ /* Wait for write command request */
++ status = dfc_wait_event(context, NDSR_WRCMDREQ,
++ &event_out, NAND_CMD_TIMEOUT, 0);
++
++ if (status)
++ return status; /* Timeout */
++
++ cmd2 = (cmd>>8) & 0xFF;
++ ndcb0 = cmd | (dfc_mode->chip_select<<24) | ((cmd2?1:0)<<19);
++
++ if (cmd == flash_info->read1) {
++ if (0xFFFFFFFF != addr) {
++ ndcb0 |= NDCB0_ADDR_CYC(4);
++ status = flash_info->addr2ndcb1(cmd, addr, &ndcb1);
++ if (status)
++ return status;
++ ndcb2 = (num_pages-1) << 8;
++ }
++ } else if (cmd == flash_info->program) {
++ ndcb0 |= NDCB0_CMD_TYPE(1) | NDCB0_AUTO_RS;
++ ndcb0 |= NDCB0_ADDR_CYC(4);
++
++ status = flash_info->addr2ndcb1(cmd, addr, &ndcb1);
++ if (status)
++ return status;
++ ndcb2 = (num_pages-1) << 8;
++ } else if (cmd == flash_info->erase) {
++ ndcb0 |= NDCB0_CMD_TYPE(2) | NDCB0_AUTO_RS;
++ ndcb0 |= NDCB0_ADDR_CYC(3);
++
++ status = flash_info->addr2ndcb1(cmd, addr, &ndcb1);
++ if (status)
++ return status;
++ } else if (cmd == flash_info->read_id) {
++ ndcb0 |= NDCB0_CMD_TYPE(3);
++ } else if (cmd == flash_info->read_status) {
++ ndcb0 |= NDCB0_CMD_TYPE(4);
++ } else if (cmd == flash_info->reset) {
++ ndcb0 |= NDCB0_CMD_TYPE(5);
++ } else if (cmd == flash_info->lock) {
++ ndcb0 |= NDCB0_CMD_TYPE(5);
++ } else
++ return -EINVAL;
++
++ *((uint32_t *)buf) = ndcb0;
++ *((uint32_t *)buf + 1) = ndcb1;
++ *((uint32_t *)buf + 2) = ndcb2;
++
++ dma_int_en &= (DCMD_STARTIRQEN | DCMD_ENDIRQEN);
++
++ dma_desc->ddadr = next_desc_phys;
++ dma_desc->dsadr = buf_phys;
++ dma_desc->dtadr = NDCB0_DMA_ADDR;
++ dma_desc->dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | dma_int_en |
++ DCMD_WIDTH4 | DCMD_BURST16 | 12;
++ return 0;
++}
++
++int dfc_setup_data_dma(struct dfc_context* context,
++ uint16_t cmd, uint32_t buf_phys,
++ uint32_t next_desc_phys, uint32_t dma_int_en,
++ struct pxa_dma_desc* dma_desc)
++{
++ struct dfc_flash_info * flash_info = context->flash_info;
++ int data_size, padding;
++
++ dfc_get_pattern(context, cmd, &data_size, &padding);
++
++ dma_desc->ddadr = next_desc_phys;
++ dma_int_en &= (DCMD_STARTIRQEN | DCMD_ENDIRQEN);
++
++ if (cmd == flash_info->program) {
++
++ dma_desc->dsadr = buf_phys;
++ dma_desc->dtadr = NDDB_DMA_ADDR;
++ dma_desc->dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG | dma_int_en |
++ DCMD_WIDTH4 | DCMD_BURST32 | data_size;
++
++ } else if (cmd == flash_info->read1 || cmd == flash_info->read_id ||
++ cmd == flash_info->read_status) {
++
++ dma_desc->dsadr = NDDB_DMA_ADDR;
++ dma_desc->dtadr = buf_phys;
++ dma_desc->dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC | dma_int_en |
++ DCMD_WIDTH4 | DCMD_BURST32 | data_size;
++ }
++ else
++ return -EINVAL;
++ return 0;
++}
++
++void dfc_start_cmd_dma(struct dfc_context* context, struct pxa_dma_desc* dma_desc)
++{
++ DRCMR99 = DRCMR_MAPVLD | context->cmd_dma_ch; /* NAND CMD DRCMR */
++ DDADR(context->cmd_dma_ch) = (uint32_t)dma_desc;
++ DCSR(context->cmd_dma_ch) |= DCSR_RUN;
++}
++
++void dfc_start_data_dma(struct dfc_context* context, struct pxa_dma_desc* dma_desc)
++{
++ DRCMR97 = DRCMR_MAPVLD | context->data_dma_ch;
++ DDADR(context->data_dma_ch) = (uint32_t)dma_desc;
++ DCSR(context->data_dma_ch) |= DCSR_RUN;
++}
++
++/******************************************************************************
++ dfc_read_fifo_partial
++
++ Description:
++ This function reads data from data buffer of DFC.Bytes can be any less than
++ or equal to data_size, the left is ignored by ReadFIFO though they will be
++ read from NDDB to clear data buffer.
++ Input Parameters:
++ context
++ Pointer to DFC context structure
++ nbytes
++ Indicating how much data should be read into buffer.
++ data_size
++ Specifing length of data transferred to/from DFC, which includes
++ padding bytes
++ Output Parameters:
++ pBuffer
++ Pointer to the data buffer where data should be placed.
++ Returns:
++ None
++*******************************************************************************/
++void dfc_read_fifo_partial(struct dfc_context *context, uint8_t *buffer,
++ int nbytes, int data_size)
++{
++ uint32_t data = 0;
++ uint32_t i = 0;
++ uint32_t bytes_multi;
++ uint32_t bytes_remain;
++
++
++ if (1 == data_size) {
++ data = dfc_read(context, DFC_NDDB) & 0xFF;
++ *buffer++ = (uint8_t)data;
++ } else if (2 == data_size) {
++ data = dfc_read(context, DFC_NDDB) & 0xFFFF;
++ *buffer++ = data & 0xFF;
++ *buffer++ = (data >> 8) & 0xFF;
++ } else {
++ bytes_multi = (nbytes & 0xFFFFFFFC);
++ bytes_remain = nbytes & 0x03;
++
++ i = 0;
++ /* Read the bytes_multi*4 bytes data */
++ while (i < bytes_multi) {
++ data = dfc_read(context, DFC_NDDB);
++ /* FIXME: we don't know whether the buffer
++ * align to 4 bytes or not. Cast the buffer
++ * to int is not safe here. Especially under
++ * gcc 4.x. Used memcpy here. But the memcpy
++ * may be not correct on BE architecture.
++ * --by Yin, Fengwei
++ */
++ memcpy(buffer, &data, sizeof(data));
++ i += sizeof(data);
++ buffer += sizeof(data);
++ }
++
++ /* Read the left bytes_remain bytes data */
++ if (bytes_remain) {
++ data = dfc_read(context, DFC_NDDB);
++ for (i = 0; i < bytes_remain; i++)
++ *buffer++ = (uint8_t)((data >> (8*i)) & 0xFF);
++ }
++
++ /* When read the remain bytes, we always read 4 bytes data
++ * to DFC. So the data_size should subtract following number.
++ */
++ data_size -= bytes_multi + (bytes_remain ? sizeof(data) : 0);
++
++ /* We need Read data_size bytes data totally */
++ while (data_size > 0) {
++ data = dfc_read(context, DFC_NDDB);
++ data_size -= sizeof(data);
++ }
++
++/*
++ while(i < ((uint32_t)data_size) ) {
++ if (i < bytes_multi) {
++ temp = (uint32_t *)buffer;
++ *temp = dfc_reg->nddb;
++ } else if (i == bytes_multi && bytes_remain){
++ uint32_t j = 0;
++ data = dfc_reg->nddb;
++ while (j++ < bytes_remain) {
++ *buffer++ = (uint8_t) \
++ ((data>>(8*j)) & 0xFF);
++ }
++ } else {
++ data = dfc_reg->nddb;
++ }
++ i += 4;
++ buffer += 4;
++ }
++*/
++ }
++ return;
++}
++
++/******************************************************************************
++ dfc_write_fifo_partial
++
++ Description:
++ Write to data buffer of DFC from a buffer. Bytes can be same as
++ data_size, also can be data_size-padding, but can¡¯t be random value,
++ the left will be automatically padded by WriteFIFO.
++ Input Parameters:
++ context
++ Pointer to DFC context structure
++ bytes
++ Indicating how much data should be read into buffer.
++ data_size
++ Specifing length of data transferred to/from DFC, which includes
++ padding bytes
++ buffer
++ Pointer to the data buffer where data will be taken from to be written
++ to DFC data buffer
++ Output Parameters:
++ None
++ Returns:
++ None
++*******************************************************************************/
++void dfc_write_fifo_partial(struct dfc_context *context, uint8_t *buffer,
++ int nbytes, int data_size)
++{
++ uint32_t i = 0;
++
++ uint32_t bytes_multi = (nbytes & 0xFFFFFFFC);
++ uint32_t bytes_remain = nbytes & 0x03;
++ uint32_t temp;
++ /*
++ * caller guarantee buffer contains appropriate data thereby
++ * it is impossible for nbytes not to be a multiple of 4 byte
++ */
++
++ /* Write the bytes_multi*4 bytes data */
++ while (i < bytes_multi) {
++ temp = buffer[0] | buffer[1] << 8 |
++ buffer[2] << 16 | buffer[3] << 24;
++ dfc_write(context, DFC_NDDB, temp);
++ buffer += 4;
++ i += 4;
++ }
++
++ /* Write the left bytes_remain bytes data */
++ if (bytes_remain) {
++ temp = 0xFFFFFFFF;
++ for (i = 0; i < bytes_remain; i++)
++ temp &= *buffer++ << i*8;
++
++ dfc_write(context, DFC_NDDB, temp);
++ }
++
++ /* When write the remain bytes, we always write 4 bytes data
++ * to DFC. So the data_size should subtract following number.
++ */
++ data_size -= bytes_multi + (bytes_remain ? sizeof(temp) : 0);
++
++ while (data_size > 0) {
++ dfc_write(context, DFC_NDDB, 0xFFFFFFFF);
++ data_size -= 4;
++ }
++
++/*
++ while (i < ((uint32_t)data_size)) {
++ if (i < bytes_multi) {
++ temp = (uint32_t *)buffer;
++ dfc_reg->nddb = *temp;
++ }
++ else if (i == bytes_multi && bytes_remain) {
++ uint32_t j = 0, data = 0xFFFFFFFF;
++ while (j < bytes_remain) {
++ data &= (uint8_t)(*buffer) << j;
++ buffer++;
++ j++;
++ }
++ dfc_reg->nddb = data;
++ }
++ else {
++ dfc_reg->nddb = 0xFFFFFFFF;
++ }
++ i += 4;
++ buffer += 4;
++ }
++*/
++
++ return;
++}
++
++/******************************************************************************
++ dfc_read_fifo
++ Description:
++ This function reads data from data buffer of DFC.Bytes can be any less
++ than or equal to data_size, the left is ignored by ReadFIFO though they
++ will be read from NDDB to clear data buffer.
++ Input Parameters:
++ context
++ Pointer to DFC context structure
++ nbytes
++ Indicating how much data should be read into buffer.
++ data_size
++ Specifing length of data transferred to/from DFC, which includes
++ padding bytes
++ Output Parameters:
++ buffer
++ Pointer to the data buffer where data should be placed.
++ Returns:
++ None
++*******************************************************************************/
++
++void dfc_read_fifo(struct dfc_context *context, uint8_t *buffer, int nbytes)
++{
++ uint32_t i = 0;
++
++ uint32_t bytes_multi = (nbytes & 0xFFFFFFFC);
++ uint32_t bytes_remain = nbytes & 0x03;
++ uint32_t temp;
++
++ /* Read the bytes_multi*4 bytes data */
++ while (i < bytes_multi) {
++ temp = dfc_read(context, DFC_NDDB);
++ /* FIXME: we don't know whether the buffer
++ * align to 4 bytes or not. Cast the buffer
++ * to int is not safe here. Especially under
++ * gcc 4.x. Used memcpy here. But the memcpy
++ * may be not correct on BE architecture.
++ * --by Yin, Fengwei
++ */
++ memcpy(buffer, &temp, sizeof(temp));
++ i += sizeof(temp);
++ buffer += sizeof(temp);
++ }
++
++ /* Read the left bytes_remain bytes data */
++ temp = dfc_read(context, DFC_NDDB);
++ for (i = 0; i < bytes_remain; i++) {
++ *buffer++ = (uint8_t)((temp >> (8*i)) & 0xFF);
++ }
++
++/*
++ while (i < bytes_multi) {
++ temp = (uint32_t *)buffer;
++ *temp = dfc_reg->nddb;
++ i += 4;
++ buffer += 4;
++ }
++
++ if (bytes_remain) {
++ data = dfc_reg->nddb;
++ for (i = 0; i < bytes_remain; i++) {
++ *buffer++ = (uint8_t)((data>>(8*i)) & 0xFF);
++ }
++ }
++*/
++
++ return;
++}
++
++/******************************************************************************
++ dfc_write_fifo
++ Description:
++ Write to data buffer of DFC from a buffer.Bytes can be same as data_size,
++ also can be data_size-padding, but can¡¯t be random value, the left will
++ be automatically padded by WriteFIFO.
++ Input Parameters:
++ context
++ Pointer to DFC context structure
++ nbytes
++ Indicating how much data should be read into buffer.
++ data_size
++ Specifing length of data transferred to/from DFC, which includes
++ padding bytes
++ buffer
++ Pointer to the data buffer where data will be taken from to be written to
++ DFC data buffer
++ Output Parameters:
++ None
++ Returns:
++ None
++*******************************************************************************/
++void dfc_write_fifo(struct dfc_context *context, uint8_t *buffer, int nbytes)
++{
++ uint32_t bytes_multi = (nbytes & 0xFFFFFFFC);
++ uint32_t bytes_remain = nbytes & 0x03;
++ uint32_t i=0;
++ uint32_t temp;
++
++ /* Write the bytes_multi*4 bytes data */
++ while (i < bytes_multi) {
++ temp = buffer[0] | buffer[1] << 8 |
++ buffer[2] << 16 | buffer[3] << 24;
++ dfc_write(context, DFC_NDDB, temp);
++ buffer += 4;
++ i += 4;
++ }
++
++ /* Write the left bytes_remain bytes data */
++ temp = 0xFFFFFFFF;
++ for (i = 0; i < bytes_remain; i++)
++ temp &= *buffer++ << i*8;
++ dfc_write(context, DFC_NDDB, temp);
++
++/*
++ while (i < nbytes) {
++ temp = (uint32_t *)buffer;
++ dfc_reg->nddb = *temp;
++ i += 4;
++ buffer += 4;
++ }
++*/
++}
++
++/******************************************************************************
++ dfc_read_badblock_addr
++
++ Description:
++ This function reads bad block address in units of block starting from 0
++ if bad block is detected. It takes into the account if the operation is
++ for CS0 or CS1 depending on settings of chip_select parameter of DFC
++ Mode structure.
++ Input Parameters:
++ context
++ Pointer to DFC context structure
++ Output Parameters:
++ pBadBlockAddr
++ Used to retrieve bad block address back to caller if bad block is
++ detected
++ Returns:
++ None
++*******************************************************************************/
++void dfc_read_badblock_addr(struct dfc_context *context, uint32_t *bbaddr)
++{
++ uint32_t ndbdr;
++ if (0 == context->dfc_mode->chip_select)
++ ndbdr = dfc_read(context, DFC_NDBDR0);
++ else
++ ndbdr = dfc_read(context, DFC_NDBDR1);
++
++ if (512 == context->flash_info->page_size) {
++ ndbdr = (ndbdr >> 5) & 0xFFF;
++ *bbaddr = ndbdr;
++ } else if (2048 == context->flash_info->page_size) {
++ /* 16 bits LB */
++ ndbdr = (ndbdr >> 8);
++ *bbaddr = ndbdr;
++ }
++ return;
++}
++
++/******************************************************************************
++ dfc_enable_int
++
++ Description:
++ This function is used to enable DFC interrupts. The bits in int_mask
++ will be used to unmask NDCR register to enable corresponding interrupts.
++ Input Parameters:
++ context
++ Pointer to DFC context structure
++ int_mask
++ Specifies what interrupts to enable
++ Output Parameters:
++ None
++ Returns:
++ None
++*******************************************************************************/
++void dfc_enable_int(struct dfc_context *context, uint32_t int_mask)
++{
++ uint32_t ndcr;
++
++ ndcr = dfc_read(context, DFC_NDCR);
++ ndcr &= ~int_mask;
++ dfc_write(context, DFC_NDCR, ndcr);
++
++ ndcr = dfc_read(context, DFC_NDCR);
++ return;
++}
++
++/******************************************************************************
++ dfc_disable_int
++
++ Description:
++ This function is used to disable DFC interrupts.
++ The bits inint_mask will be used to mask NDCR register to disable
++ corresponding interrupts.
++ Input Parameters:
++ context
++ Pointer to DFC context structure
++ int_mask
++ Specifies what interrupts to disable
++ Output Parameters:
++ None
++ Returns:
++ None
++*******************************************************************************/
++void dfc_disable_int(struct dfc_context *context, uint32_t int_mask)
++{
++ uint32_t ndcr;
++
++ ndcr = dfc_read(context, DFC_NDCR);
++ ndcr |= int_mask;
++ dfc_write(context, DFC_NDCR, ndcr);
++
++ ndcr = dfc_read(context, DFC_NDCR);
++ return;
++}
++
++/******************************************************************************
++ dfc_clear_int
++
++ Description:
++ This function is used to disable DFC interrupts.
++ The bits in int_mask will be used to clear corresponding interrupts
++ in NDCR register
++ Input Parameters:
++ context
++ Pointer to DFC context structure
++ int_mask
++ Specifies what interrupts to clear
++ Output Parameters:
++ None
++ Returns:
++ None
++*******************************************************************************/
++void dfc_clear_int(struct dfc_context *context, uint32_t int_mask)
++{
++ dfc_write(context, DFC_NDSR, int_mask);
++
++ dfc_read(context, DFC_NDSR);
++ return;
++}
++
++/*
++ * high level primitives
++ */
++
++/******************************************************************************
++ dfc_init
++
++ Description:
++ This function does entire DFC initialization according to the NAND
++ flash type currently used with platform, including setting MFP, set
++ flash timing, set DFC mode, configuring specified flash parameters
++ in DFC, clear ECC logic and page count register.
++ Input Parameters:
++ context
++ Pointer to DFC context structure
++ Output Parameters:
++ None
++ Returns:
++ 0
++ if MFPRs are set correctly
++ -EINVAL
++ if specified flash is not support by check bytes per page and pages per
++ block
++******************************************************************************/
++
++static mfp_cfg_t pxa300_nand_cfg[] = {
++ /* NAND */
++ MFP_CFG_X(DF_INT_RnB, AF0, DS10X, PULL_LOW),
++ MFP_CFG_X(DF_nRE_nOE, AF1, DS10X, PULL_LOW),
++ MFP_CFG_X(DF_nWE, AF1, DS10X, PULL_LOW),
++ MFP_CFG_X(DF_CLE_nOE, AF0, DS10X, PULL_LOW),
++ MFP_CFG_X(DF_nADV1_ALE, AF1, DS10X, PULL_LOW),
++ MFP_CFG_X(DF_nCS0, AF1, DS10X, PULL_LOW),
++ MFP_CFG_X(DF_nCS1, AF0, DS10X, PULL_LOW),
++ MFP_CFG_X(DF_IO0, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO1, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO2, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO3, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO4, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO5, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO6, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO7, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO8, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO9, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO10, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO11, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO12, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO13, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO14, AF1, DS08X, PULL_LOW),
++};
++
++#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
++
++int dfc_init(struct dfc_context* context, int type)
++{
++ int status;
++ struct dfc_flash_info * flash_info;
++ uint32_t ndcr = 0x00000FFF; /* disable all interrupts */
++
++ status = dfc_get_flash_info(type, &flash_info);
++ if (status)
++ return status;
++ context->flash_info = flash_info;
++
++ pxa3xx_mfp_config(ARRAY_AND_SIZE(pxa300_nand_cfg));
++ //enable_dfc_pins();
++
++ dfc_set_timing(context, &context->flash_info->timing);
++
++ if (flash_info->enable_arbiter)
++ ndcr |= NDCR_ND_ARB_EN;
++
++ if (64 == flash_info->page_per_block)
++ ndcr |= NDCR_PG_PER_BLK;
++ else if (32 != flash_info->page_per_block)
++ return -EINVAL;
++
++ if (flash_info->row_addr_start)
++ ndcr |= NDCR_RA_START;
++
++ ndcr |= (flash_info->read_id_bytes)<<16;
++
++ ndcr |= (flash_info->dfc_mode) << 21;
++
++ if (flash_info->ncsx)
++ ndcr |= NDCR_NCSX;
++
++ if (2048 == flash_info->page_size)
++ ndcr |= NDCR_PAGE_SZ;
++ else if (512 != flash_info->page_size)
++ return -EINVAL;
++
++ if (16 == flash_info->flash_width)
++ ndcr |= NDCR_DWIDTH_M;
++ else if (8 != flash_info->flash_width)
++ return -EINVAL;
++
++ if (16 == flash_info->dfc_width)
++ ndcr |= NDCR_DWIDTH_C;
++ else if (8 != flash_info->dfc_width)
++ return -EINVAL;
++
++ dfc_write(context, DFC_NDCR, ndcr);
++
++ dfc_set_dma(context);
++ dfc_set_ecc(context);
++ dfc_set_spare(context);
++
++ return 0;
++}
++
++/******************************************************************************
++ dfc_init_no_gpio
++
++ Description:
++ This function does entire DFC initialization according to the NAND
++ flash type currently used with platform, including set flash timing,
++ set DFC mode, configuring specified flash parameters in DFC, clear
++ ECC logic and page count register. The only difference with dfc_init
++ is that it does not set MFP&GPIO, very useful in OS loader
++ Input Parameters:
++ context
++ Pointer to DFC context structure
++ Output Parameters:
++ None
++ Returns:
++ 0
++ if MFPRs are set correctly
++ -EINVAL
++ if specified flash is not support by check bytes per page and pages
++ per block
++******************************************************************************/
++int dfc_init_no_gpio(struct dfc_context* context, int type)
++{
++ struct dfc_flash_info * flash_info;
++ uint32_t ndcr = 0x00000FFF; /* disable all interrupts */
++ int status;
++
++ status = dfc_get_flash_info(type, &flash_info);
++ if (status)
++ return status;
++ context->flash_info = flash_info;
++
++ dfc_set_timing(context, &context->flash_info->timing);
++
++ if (flash_info->enable_arbiter)
++ ndcr |= NDCR_ND_ARB_EN;
++
++ if (64 == flash_info->page_per_block)
++ ndcr |= NDCR_PG_PER_BLK;
++ else if (32 != flash_info->page_per_block)
++ return -EINVAL;
++
++ if (flash_info->row_addr_start)
++ ndcr |= NDCR_RA_START;
++
++ ndcr |= (flash_info->read_id_bytes)<<16;
++
++ ndcr |= (flash_info->dfc_mode) << 21;
++
++ if (flash_info->ncsx)
++ ndcr |= NDCR_NCSX;
++
++ if (2048 == flash_info->page_size)
++ ndcr |= NDCR_PAGE_SZ;
++ else if (512 != flash_info->page_size)
++ return -EINVAL;
++
++ if (16 == flash_info->flash_width)
++ ndcr |= NDCR_DWIDTH_M;
++ else if (8 != flash_info->flash_width)
++ return -EINVAL;
++
++ if (16 == flash_info->dfc_width)
++ ndcr |= NDCR_DWIDTH_C;
++ else if (8 != flash_info->dfc_width)
++ return -EINVAL;
++
++ dfc_write(context, DFC_NDCR, ndcr);
++
++ dfc_set_dma(context);
++ dfc_set_ecc(context);
++ dfc_set_spare(context);
++
++ return 0;
++}
++
++/*
++ * This macro will be used in following NAND operation functions.
++ * It is used to clear command buffer to ensure cmd buffer is empty
++ * in case of operation is timeout
++ */
++#define ClearCMDBuf() do { \
++ dfc_stop(context); \
++ udelay(NAND_OTHER_TIMEOUT); \
++ } while (0)
++
++/******************************************************************************
++ dfc_reset_flash
++
++ Description:
++ It reset the flash. The function can be called at any time when the
++ device is in Busy state during random read/program/erase mode and
++ reset operation will abort all these operations. After reset operation
++ the device is ready to wait for next command
++ Input Parameters:
++ context
++ Pointer to DFC context structure
++ Output Parameters:
++ None
++ Returns:
++ 0
++ execution succeeds
++ -ETIME
++ if timeout
++*******************************************************************************/
++int dfc_reset_flash(struct dfc_context *context)
++{
++ struct dfc_flash_info *flash_info = context->flash_info;
++ uint32_t event, event_out;
++ unsigned long timeo;
++ int status;
++
++ /* Send command */
++ dfc_send_cmd(context, (uint16_t)flash_info->reset, 0xFFFFFFFF, 0);
++
++ event = (context->dfc_mode->chip_select)? \
++ NDSR_CS1_CMDD : NDSR_CS0_CMDD;
++
++ /* Wait for CMDDM(command done successfully) */
++ status = dfc_wait_event(context, event, &event_out,
++ NAND_OTHER_TIMEOUT, 0);
++
++ if (status) {
++ ClearCMDBuf();
++ return status;
++ }
++
++
++ /* Wait until flash device is stable or timeout (10ms) */
++ timeo = jiffies + HZ;
++ do {
++ if (monahans_df_dev_ready(context->mtd))
++ break;
++ } while (time_before(jiffies, timeo));
++
++ return 0;
++}
++
++int dfc_readid(struct dfc_context *context, uint32_t *id)
++{
++ struct dfc_flash_info *flash_info = context->flash_info;
++ uint32_t event_out;
++ int status;
++ char tmp[DFC_DATA_SIZE_ID];
++
++ /* Send command */
++ status = dfc_send_cmd(context, (uint16_t)flash_info->read_id,
++ 0xFFFFFFFF, 0);
++ if (status) {
++ ClearCMDBuf();
++ return status;
++ }
++
++ /* Wait for CMDDM(command done successfully) */
++ status = dfc_wait_event(context, NDSR_RDDREQ, &event_out,
++ NAND_OTHER_TIMEOUT, 0);
++ if (status) {
++ ClearCMDBuf();
++ return status;
++ }
++ dfc_read_fifo_partial(context, (unsigned char *)tmp,
++ context->flash_info->read_id_bytes, DFC_DATA_SIZE_ID);
++
++ *id = tmp[0] | (tmp[1] << 8);
++ return 0;
++}
++
++#define ERR_NONE 0x0
++#define ERR_DMABUSERR (-0x01)
++#define ERR_SENDCMD (-0x02)
++#define ERR_DBERR (-0x03)
++#define ERR_BBERR (-0x04)
++#define ERR_BUSY (-0x05)
++
++#define STATE_CMD_SEND 0x1
++#define STATE_CMD_HANDLE 0x2
++#define STATE_DMA_TRANSFER 0x3
++#define STATE_DMA_DONE 0x4
++#define STATE_READY 0x5
++#define STATE_SUSPENDED 0x6
++#define STATE_DATA_TRANSFER 0x7
++
++#define NAND_RELOC_MAX 127
++#define NAND_RELOC_HEADER 0x524e
++#define MAX_CHIP 1
++#define NAND_CMD_DMA_LEN 12
++
++#define MAX_TIM_SIZE 0x1000
++#define MAX_BBT_SLOTS 24
++
++struct reloc_item {
++ unsigned short from;
++ unsigned short to;
++};
++
++struct reloc_table {
++ unsigned short header;
++ unsigned short total;
++ struct reloc_item reloc[NAND_RELOC_MAX];
++};
++
++struct monahans_dfc_info {
++ unsigned int state;
++ struct dfc_context *context;
++#ifdef CONFIG_MTD_NAND_MONAHANS_DMA
++ dma_addr_t data_buf_addr;
++ char *data_buf;
++ int data_dma;
++ struct pxa_dma_desc *data_desc;
++ dma_addr_t data_desc_addr;
++ dma_addr_t cmd_buf_addr;
++ char *cmd_buf;
++ int cmd_dma;
++ struct pxa_dma_desc *cmd_desc;
++ dma_addr_t cmd_desc_addr;
++ u64 dma_mask;
++#else
++ char *data_buf;
++#endif
++ u32 current_slot;
++ struct reloc_table table;
++ unsigned int table_init;
++ /* relate to the command */
++ unsigned int cmd;
++ unsigned int addr;
++ unsigned int column;
++ int retcode;
++ unsigned int buf_count;
++ struct completion cmd_complete;
++};
++
++static struct dfc_mode dfc_mode =
++{
++#ifdef CONFIG_MTD_NAND_MONAHANS_DMA
++ 1, /* enable DMA */
++#else
++ 0,
++#endif
++ 1, /* enable ECC */
++ 1, /* enable SPARE */
++ 0, /* CS0 */
++};
++
++
++struct dfc_context dfc_context =
++{
++ 0, /* Initialized at function monahans_df_init() */
++ &dfc_mode,
++ 0, /* data dma channel */
++ 0, /* cmd dma channel */
++ NULL, /* &zylonite_flashinfo */
++};
++
++
++/*
++ * MTD structure for Zylonite board
++ */
++static struct mtd_info *monahans_mtd = NULL;
++
++/*
++ * BootRom and XDB will use last 127 block, and they will keep all the status
++ * of the bootloader and image, so skip the first 2M size and last 2M size
++ */
++static struct mtd_partition partition_info[] = {
++ {
++ name: "Bootloader",
++//#ifdef CONFIG_CPU_MONAHANS_LV
++ size: 0x00060000,
++//#else
++// size: 0x00040000,
++//#endif
++ offset: 0,
++ mask_flags: MTD_WRITEABLE /* force read-only */
++ },{
++ name: "Kernel",
++ size: 0x00200000,
++//#ifdef CONFIG_CPU_MONAHANS_LV
++ offset: 0x00060000,
++//#else
++// offset: 0x00040000,
++//#endif
++ mask_flags: MTD_WRITEABLE /* force read-only */
++ },{
++ name: "Filesystem",
++ size: 0x05000000,
++//#ifdef CONFIG_CPU_MONAHANS_LV
++ offset: 0x00260000,
++//#else
++// offset: 0x00240000,
++//#endif
++ }, {
++ name: "MassStorage",
++ size: 0x0, /* It will be set at probe function */
++ offset: MTDPART_OFS_APPEND /* Append after fs section */
++ }, {
++ name: "BBT",
++ size: 0x0, /* It will be set at probe function */
++ offset: MTDPART_OFS_APPEND,/* Append after fs section */
++ mask_flags: MTD_WRITEABLE /* force read-only */
++ }
++};
++
++#define PART_NUM ARRAY_SIZE(partition_info)
++
++/* MHN_OBM_V2 is related to BBT in MOBM V2
++ * MHN_OBM_V3 is related to BBT in MOBM V3
++ */
++enum {
++ MHN_OBM_NULL = 0,
++ MHN_OBM_V1,
++ MHN_OBM_V2,
++ MHN_OBM_V3,
++ MHN_OBM_INVAL
++} MHN_OBM_TYPE;
++
++static uint8_t scan_ff_pattern[] = { 0xff, 0xff };
++static uint8_t scan_main_bbt_pattern[] = { 'p', 'x', 'a', '1' };
++static uint8_t scan_mirror_bbt_pattern[] = { '0', 'a', 'x', 'p' };
++
++static struct nand_bbt_descr monahans_bbt_default = {
++ .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
++ | NAND_BBT_2BIT | NAND_BBT_VERSION,
++ .maxblocks = 2,
++ .len = 2,
++ .offs = 0,
++ .pattern = scan_ff_pattern,
++};
++
++static struct nand_bbt_descr monahans_bbt_main = {
++ .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
++ | NAND_BBT_2BIT | NAND_BBT_VERSION,
++ .veroffs = 6,
++ .maxblocks = 2,
++ .offs = 2,
++ .len = 4,
++ .pattern = scan_main_bbt_pattern,
++};
++
++static struct nand_bbt_descr monahans_bbt_mirror = {
++ .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
++ | NAND_BBT_2BIT | NAND_BBT_VERSION,
++ .veroffs = 6,
++ .maxblocks = 2,
++ .offs = 2,
++ .len = 4,
++ .pattern = scan_mirror_bbt_pattern,
++};
++
++#if 0
++static struct nand_bbt_descr monahans_bbt_main = {
++ .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
++ | NAND_BBT_2BIT | NAND_BBT_VERSION,
++ .veroffs = 2,
++ .maxblocks = 2,
++ .offs = 0x0,
++ .len = 2,
++ .pattern = scan_ff_pattern
++};
++static struct nand_bbt_descr monahans_bbt_mirror = {
++ .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE
++ | NAND_BBT_2BIT | NAND_BBT_VERSION,
++ .veroffs = 2,
++ .maxblocks = 2,
++ .offs = 0x0,
++ .len = 2,
++ .pattern = scan_ff_pattern
++};
++#endif
++
++static struct nand_ecclayout monahans_lb_nand_oob = {
++ .eccbytes = 24,
++ .eccpos = {
++ 40, 41, 42, 43, 44, 45, 46, 47,
++ 48, 49, 50, 51, 52, 53, 54, 55,
++ 56, 57, 58, 59, 60, 61, 62, 63},
++ .oobfree = { {2, 38} }
++};
++
++/*
++ * Monahans OOB size is only 8 bytes, and the rest 8 bytes is controlled by
++ * hardware for ECC. We construct virutal ECC buffer. Acutally, ECC is 6 bytes
++ * and the remain 2 bytes are reserved.
++ */
++static struct nand_ecclayout monahans_sb_nand_oob = {
++ .eccbytes = 6,
++ .eccpos = {8, 9, 10, 11, 12, 13 },
++ .oobfree = { {2, 6} }
++};
++
++
++static inline int is_buf_blank(u8 * buf, int size)
++{
++ int i = 0;
++ while(i < size) {
++ if (*((unsigned long *)(buf + i)) != 0xFFFFFFFF)
++ return 0;
++ i += 4;
++ }
++ if (i > size) {
++ i -= 4;
++ while( i < size) {
++ if(*(buf + i) != 0xFF)
++ return 0;
++ i++;
++ }
++ }
++ return 1;
++}
++
++static void print_buf(char *buf, int num)
++{
++ int i = 0;
++
++ while (i < num) {
++ printk(KERN_ERR "0x%08x: %02x %02x %02x %02x %02x %02x %02x"
++ " %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
++ (unsigned int) (i), buf[i], buf[i+1], buf[i+2],
++ buf[i+3], buf[i+4], buf[i+5], buf[i+6], buf[i+7],
++ buf[i+8], buf[i+9], buf[i+10],buf[i+11], buf[i+12],
++ buf[i+13], buf[i+14], buf[i+15]);
++ i += 16;
++ }
++}
++
++static int inline enable_dfc_dma(struct dfc_context *context, int enable)
++{
++ int ret = dfc_mode.enable_dma;
++ unsigned long ndcr;
++
++ if (!enable) {
++ ndcr = dfc_read(context, DFC_NDCR);
++ ndcr &= ~NDCR_DMA_EN;
++ dfc_write(context, DFC_NDCR, ndcr);
++ dfc_mode.enable_dma = 0;
++ } else {
++ ndcr = dfc_read(context, DFC_NDCR);
++ ndcr |= NDCR_DMA_EN;
++ dfc_write(context, DFC_NDCR, ndcr);
++ dfc_mode.enable_dma = 1;
++ }
++ return ret;
++}
++
++
++static void inline dump_info(struct monahans_dfc_info *info)
++{
++ if (!info)
++ return;
++
++ printk(KERN_ERR "cmd:0x%x; addr:0x%x; retcode:%d; state:%d \n",
++ info->cmd, info->addr, info->retcode, info->state);
++}
++
++static void inline enable_hw_ecc(struct dfc_context* context, int enable)
++{
++ unsigned long ndcr;
++
++ if (!enable) {
++ ndcr = dfc_read(context, DFC_NDCR);
++ ndcr &= ~NDCR_ECC_EN;
++ dfc_write(context, DFC_NDCR, ndcr);
++ dfc_mode.enable_ecc = 0;
++ }
++ else {
++ ndcr = dfc_read(context, DFC_NDCR);
++ ndcr |= NDCR_ECC_EN;
++ dfc_write(context, DFC_NDCR, ndcr);
++ dfc_mode.enable_ecc = 1;
++ }
++}
++
++/*
++ * Now, we are not sure that the NDSR_RDY mean the flash is ready.
++ * Need more test.
++ */
++static int monahans_df_dev_ready(struct mtd_info *mtd)
++{
++ struct monahans_dfc_info *info = (struct monahans_dfc_info *)
++ (((struct nand_chip *)(mtd->priv))->priv);
++
++ struct dfc_context* context = info->context;
++
++ return ((dfc_read(context, DFC_NDSR) & NDSR_RDY));
++}
++
++/* each read, we can only read 4bytes from NDDB, we must buffer it */
++static u_char monahans_df_read_byte(struct mtd_info *mtd)
++{
++ char retval = 0xFF;
++ struct monahans_dfc_info *info = (struct monahans_dfc_info *)
++ (((struct nand_chip *)(mtd->priv))->priv);
++
++ if (info->column < info->buf_count) {
++ /* Has just send a new command? */
++ retval = info->data_buf[info->column++];
++ }
++ return retval;
++}
++
++static void monahans_df_write_byte(struct mtd_info *mtd, u8 byte)
++{
++ struct monahans_dfc_info *info = (struct monahans_dfc_info *)
++ (((struct nand_chip *)(mtd->priv))->priv);
++ info->data_buf[info->column++] = byte;
++}
++
++static u16 monahans_df_read_word(struct mtd_info *mtd)
++{
++ u16 retval = 0xFFFF;
++ struct monahans_dfc_info *info = (struct monahans_dfc_info *)
++ (((struct nand_chip *)(mtd->priv))->priv);
++
++ if (!(info->column & 0x01) && info->column < info->buf_count) {
++ retval = *((u16 *)(info->data_buf+info->column));
++ info->column += 2;
++ }
++ return retval;
++}
++
++static void monahans_df_write_word(struct mtd_info *mtd, u16 word)
++{
++ struct monahans_dfc_info *info = (struct monahans_dfc_info *)
++ (((struct nand_chip *)(mtd->priv))->priv);
++
++ if (!(info->column & 0x01) && info->column < info->buf_count) {
++ *((u16 *)(info->data_buf+info->column)) = word;
++ info->column += 2;
++ }
++}
++
++static void monahans_df_read_buf(struct mtd_info *mtd, u_char *buf, int len)
++{
++ struct monahans_dfc_info *info = (struct monahans_dfc_info *)
++ (((struct nand_chip *)(mtd->priv))->priv);
++ int real_len = min((unsigned int)len, info->buf_count - info->column);
++
++ memcpy(buf, info->data_buf + info->column, real_len);
++ info->column += real_len;
++}
++
++static void monahans_df_write_buf(struct mtd_info *mtd,
++ const u_char *buf, int len)
++{
++ struct monahans_dfc_info *info = (struct monahans_dfc_info *)
++ (((struct nand_chip *)(mtd->priv))->priv);
++ int real_len = min((unsigned int)len, info->buf_count - info->column);
++
++ memcpy(info->data_buf + info->column, buf, real_len);
++ info->column += real_len;
++}
++
++static int monahans_df_verify_buf(struct mtd_info *mtd,
++ const u_char *buf, int len)
++{
++ return 0;
++}
++
++#ifdef CONFIG_MTD_NAND_MONAHANS_DMA
++static void monahans_dfc_cmd_dma_irq(int channel, void *data,
++ struct pt_regs *regs)
++{
++ unsigned int dcsr;
++ struct monahans_dfc_info *info = (struct monahans_dfc_info *)data;
++ struct dfc_context* context = info->context;
++ struct dfc_mode* dfc_mode = context->dfc_mode;
++ unsigned int intm;
++
++ dcsr = DCSR(channel);
++ DCSR(channel) = dcsr;
++
++ intm = (dfc_mode->chip_select) ? \
++ (NDSR_CS1_BBD | NDSR_CS1_CMDD) : (NDSR_CS0_BBD | NDSR_CS0_CMDD);
++
++ D1(printk("cmd dma interrupt, channel:%d, DCSR:0x%08x\n", \
++ channel, dcsr));
++
++ if (dcsr & DCSR_BUSERR) {
++ info->retcode = ERR_DMABUSERR;
++ complete(&info->cmd_complete);
++ } else {
++ if ((info->cmd == NAND_CMD_READ0) ||
++ (info->cmd == NAND_CMD_READOOB)|| \
++ (info->cmd == NAND_CMD_READID) || \
++ (info->cmd == NAND_CMD_STATUS)) {
++ dfc_enable_int(context, NDSR_RDDREQ | NDSR_DBERR);
++ } else if (info->cmd == NAND_CMD_PAGEPROG)
++ dfc_enable_int(context, NDSR_WRDREQ);
++ else if (info->cmd == NAND_CMD_ERASE1)
++ dfc_enable_int(context, intm);
++ }
++
++ return;
++}
++
++
++static void monahans_dfc_data_dma_irq(int channel, void *data,
++ struct pt_regs *regs)
++{
++ unsigned int dcsr, intm;
++ struct monahans_dfc_info *info = (struct monahans_dfc_info *)data;
++ struct dfc_context* context = info->context;
++ struct dfc_mode* dfc_mode = context->dfc_mode;
++
++ dcsr = DCSR(channel);
++ DCSR(channel) = dcsr;
++
++ intm = (dfc_mode->chip_select) ? \
++ (NDSR_CS1_BBD | NDSR_CS1_CMDD) : (NDSR_CS0_BBD | NDSR_CS0_CMDD);
++
++ D1(printk("data dma interrupt, channel:%d, DCSR:0x%08x\n",
++ channel, dcsr));
++ if (dcsr & DCSR_BUSERR) {
++ info->retcode = ERR_DMABUSERR;
++ complete(&info->cmd_complete);
++ }
++
++ if (info->cmd == NAND_CMD_PAGEPROG) {
++ /* DMA interrupt may be interrupted by other IRQs*/
++ info->state = STATE_DMA_DONE;
++ dfc_enable_int(context, intm);
++ } else {
++ info->state = STATE_READY;
++ complete(&info->cmd_complete);
++ }
++
++}
++#endif
++
++static irqreturn_t monahans_dfc_irq(int irq, void *devid)
++{
++ unsigned int status, event, intm, cmd;
++ struct monahans_dfc_info *info = (struct monahans_dfc_info *)devid;
++ struct dfc_context* context = info->context;
++ struct dfc_mode* dfc_mode = context->dfc_mode;
++
++ intm = (dfc_mode->chip_select) ? \
++ (NDSR_CS1_BBD | NDSR_CS1_CMDD) : (NDSR_CS0_BBD | NDSR_CS0_CMDD);
++ event = (dfc_mode->chip_select) ? \
++ (NDSR_CS1_BBD | NDSR_CS1_CMDD) : (NDSR_CS0_BBD | NDSR_CS0_CMDD);
++
++ status = dfc_read(context, DFC_NDSR);
++ D1(printk("DFC irq, NDSR:0x%x\n", status));
++ if (status & (NDSR_RDDREQ | NDSR_DBERR)) {
++ if (status & NDSR_DBERR) {
++ info->retcode = ERR_DBERR;
++ }
++
++ dfc_disable_int(context, NDSR_RDDREQ | NDSR_DBERR);
++ dfc_clear_int(context, NDSR_RDDREQ | NDSR_DBERR);
++ if (info->cmd == NAND_CMD_READID)
++ cmd = context->flash_info->read_id;
++ else if (info->cmd == NAND_CMD_STATUS)
++ cmd = context->flash_info->read_status;
++ else if (info->cmd == NAND_CMD_READ0 ||
++ info->cmd == NAND_CMD_READOOB)
++ cmd = context->flash_info->read1;
++ else {
++ printk(KERN_ERR "No according command:0x%x happens\n",
++ info->cmd);
++ goto out;
++ }
++#ifdef CONFIG_MTD_NAND_MONAHANS_DMA
++ info->state = STATE_DMA_TRANSFER;
++ dfc_start_data_dma(context,
++ (struct pxa_dma_desc*)info->data_desc_addr);
++#else
++ info->state = STATE_DATA_TRANSFER;
++ complete(&info->cmd_complete);
++#endif
++ } else if (status & NDSR_WRDREQ) {
++ dfc_disable_int(context, NDSR_WRDREQ);
++ dfc_clear_int(context, NDSR_WRDREQ);
++#ifdef CONFIG_MTD_NAND_MONAHANS_DMA
++ info->state = STATE_DMA_TRANSFER;
++ dfc_start_data_dma(context,
++ (struct pxa_dma_desc*)info->data_desc_addr);
++#else
++ info->state = STATE_DATA_TRANSFER;
++ complete(&info->cmd_complete);
++#endif
++ } else if (status & event) {
++ if (status & NDSR_CS0_BBD) {
++ info->retcode = ERR_BBERR;
++ }
++
++ dfc_disable_int(context, intm);
++ dfc_clear_int(context, event);
++ info->state = STATE_READY;
++ complete(&info->cmd_complete);
++ }
++out:
++ return IRQ_HANDLED;
++}
++
++static int dfc_send_command(struct mtd_info *mtd, unsigned int cmd,
++ unsigned int addr, unsigned int num_pages,
++ unsigned int event)
++{
++
++ struct monahans_dfc_info *info = (struct monahans_dfc_info *)
++ (((struct nand_chip *)(mtd->priv))->priv);
++ struct dfc_context* context = info->context;
++ int status;
++ int ret;
++
++ D1(printk("ready send command, cmd:0x%x, at address:0x%x,"
++ " num_pages:%d, wait event:0x%x\n", cmd, addr, num_pages, event));
++
++ info->state = STATE_CMD_SEND;
++#ifdef CONFIG_MTD_NAND_MONAHANS_DMA
++ status = dfc_setup_cmd_dma(context, cmd, addr, num_pages,
++ (uint32_t *)info->cmd_buf, info->cmd_buf_addr,
++ DDADR_STOP, DCMD_ENDIRQEN, info->cmd_desc);
++#else
++ status = dfc_send_cmd(context, cmd, addr, num_pages);
++#endif
++ if (status) {
++ info->retcode = ERR_SENDCMD;
++ dfc_stop(context);
++ udelay(20);
++ printk(KERN_ERR "fail send command\n");
++ return info->retcode;
++ }
++ info->state = STATE_CMD_HANDLE;
++#ifdef CONFIG_MTD_NAND_MONAHANS_DMA
++ dfc_setup_data_dma(context, cmd, info->data_buf_addr,
++ DDADR_STOP, DCMD_ENDIRQEN, info->data_desc);
++ dfc_start_cmd_dma(context, (struct pxa_dma_desc*)info->cmd_desc_addr);
++#endif
++#ifndef CONFIG_MTD_NAND_MONAHANS_DMA
++ dfc_enable_int(context, event);
++#endif
++ ret = wait_for_completion_timeout(&info->cmd_complete, 2*HZ);
++ if (!ret){
++ printk(KERN_ERR "Command time out\n");
++ dump_info(info);
++ }
++ D1(printk("command return, cmd:0x%x, retcode:%d\n",
++ info->cmd, info->retcode));
++ return 0;
++}
++
++static void monahans_df_command(struct mtd_info *mtd, unsigned command,
++ int column, int page_addr )
++{
++ struct nand_chip *this = (struct nand_chip *)(mtd->priv);
++ struct monahans_dfc_info *info =
++ (struct monahans_dfc_info *)(this->priv);
++ struct dfc_context *context = info->context;
++ struct dfc_flash_info * flash_info = context->flash_info;
++ int ret, pages_shift;
++ int status;
++#ifndef CONFIG_MTD_NAND_MONAHANS_DMA
++ int datasize;
++ int paddingsize;
++#endif
++ unsigned int to;
++
++ D1(printk("command:0x%x at address:0x%x, column:0x%x\n",
++ command, page_addr, column));
++
++ if (info->state != STATE_READY) {
++ printk(KERN_ERR "CHIP is not ready.\n");
++ dump_info(info);
++ info->retcode = ERR_BUSY;
++ return;
++ }
++ info->retcode = ERR_NONE;
++ pages_shift = this->phys_erase_shift - this->page_shift;
++ if (info->table_init) {
++ to = search_rel_block((page_addr >> pages_shift), mtd);
++ if (to) {
++ page_addr = (to << pages_shift) | (page_addr
++ & ((1 << pages_shift) - 1));
++ }
++ }
++
++ switch ( command ) {
++ case NAND_CMD_READOOB:
++ /*
++ * DFC has mark the last 8 bytes OOB data if HARDEARE_ECC is
++ * enabled. We must first disable the HARDWARE_ECC for getting
++ * all the 16 bytes OOB
++ */
++ enable_hw_ecc(context, 0);
++ info->buf_count = mtd->writesize + mtd->oobsize;
++ info->column = mtd->writesize + column;
++ info->cmd = command;
++ info->addr = page_addr << this->page_shift;
++ ret = dfc_send_command(mtd, flash_info->read1, info->addr,
++ 1, NDSR_RDDREQ | NDSR_DBERR);
++#ifndef CONFIG_MTD_NAND_MONAHANS_DMA
++ dfc_get_pattern(info->context, flash_info->read1, &datasize,
++ &paddingsize);
++ dfc_read_fifo_partial(info->context, info->data_buf,
++ min(info->buf_count, datasize), datasize);
++ info->state = STATE_READY;
++#endif
++ /* We only are OOB, so if the data has error, does not matter */
++ if (info->retcode == ERR_DBERR)
++ info->retcode = ERR_NONE;
++ enable_hw_ecc(context, 1);
++ break;
++
++ case NAND_CMD_READ0:
++ enable_hw_ecc(context, 1);
++ info->column = column;
++ info->cmd = command;
++ info->buf_count = mtd->writesize + mtd->oobsize;
++ memset(info->data_buf, 0xFF, info->buf_count);
++ info->addr = page_addr << this->page_shift;
++
++ ret = dfc_send_command(mtd, flash_info->read1, info->addr,
++ 1, NDSR_RDDREQ | NDSR_DBERR);
++#ifndef CONFIG_MTD_NAND_MONAHANS_DMA
++ dfc_get_pattern(info->context, flash_info->read1, &datasize,
++ &paddingsize);
++ dfc_read_fifo_partial(info->context, info->data_buf,
++ min(info->buf_count, datasize), datasize);
++ info->state = STATE_READY;
++#endif
++ /* When the data buf is blank, the DFC will report DB error */
++ if (info->retcode == ERR_DBERR && is_buf_blank(info->data_buf,
++ mtd->writesize))
++ info->retcode = ERR_NONE;
++
++ if (info->retcode == ERR_DBERR) {
++ printk(KERN_ERR "DB error at address 0x%x\n",
++ info->addr);
++ print_buf(info->data_buf, info->buf_count);
++ }
++ break;
++ case NAND_CMD_SEQIN:
++ /* Write only OOB? */
++
++ info->cmd = command;
++ if (column >= mtd->writesize) {
++ info->buf_count = mtd->writesize + mtd->oobsize;
++ enable_hw_ecc(context, 0);
++ } else {
++ info->buf_count = mtd->writesize + mtd->oobsize;
++ enable_hw_ecc(context, 1);
++ }
++ memset(info->data_buf, 0xFF, mtd->writesize + mtd->oobsize);
++ info->column = column;
++ info->addr = page_addr << this->page_shift;
++ break;
++ case NAND_CMD_PAGEPROG:
++ /* prevois command is NAND_CMD_SEIN ?*/
++ if (info->cmd != NAND_CMD_SEQIN) {
++ info->cmd = command;
++ info->retcode = ERR_SENDCMD;
++ printk(KERN_ERR "Monahans NAND device: "
++ "No NAND_CMD_SEQIN executed before.\n");
++ enable_hw_ecc(context, 1);
++ break;
++ }
++ info->cmd = command;
++ ret = dfc_send_command(mtd, flash_info->program, info->addr,
++ 1, NDSR_WRDREQ);
++
++#ifndef CONFIG_MTD_NAND_MONAHANS_DMA
++ if (ret != 0)
++ break;
++
++ dfc_get_pattern(info->context, flash_info->program, &datasize,
++ &paddingsize);
++ dfc_write_fifo_partial(info->context, info->data_buf, datasize,
++ datasize);
++
++ if (info->context->dfc_mode->chip_select)
++ dfc_enable_int(info->context,
++ NDSR_CS1_BBD | NDSR_CS1_CMDD);
++ else
++ dfc_enable_int(info->context,
++ NDSR_CS0_BBD | NDSR_CS0_CMDD);
++
++ ret = wait_for_completion_timeout(&info->cmd_complete, 2*HZ);
++ if (!ret){
++ printk(KERN_ERR "Programm Command time out\n");
++ dump_info(info);
++ }
++
++ if (info->retcode == ERR_BBERR) {
++ mtd->block_markbad(mtd, info->addr);
++ }
++#endif
++ break;
++ case NAND_CMD_ERASE1:
++ info->cmd = command;
++ info->addr = (page_addr >> pages_shift) << this->phys_erase_shift;
++
++ if (info->context->dfc_mode->chip_select)
++ ret = dfc_send_command(mtd, flash_info->erase,
++ info->addr, 0, NDSR_CS1_BBD | NDSR_CS1_CMDD);
++ else
++ ret = dfc_send_command(mtd, flash_info->erase,
++ info->addr, 0, NDSR_CS0_BBD | NDSR_CS0_CMDD);
++
++ if (info->retcode == ERR_BBERR) {
++ mtd->block_markbad(mtd, info->addr);
++ }
++ break;
++ case NAND_CMD_ERASE2:
++ break;
++ case NAND_CMD_READID:
++ info->cmd = command;
++ info->buf_count = flash_info->read_id_bytes;
++ info->column = 0;
++ info->addr = 0xFFFFFFFF;
++ ret = dfc_send_command(mtd, flash_info->read_id, info->addr,
++ 0, NDSR_RDDREQ);
++#ifndef CONFIG_MTD_NAND_MONAHANS_DMA
++ dfc_get_pattern(info->context, flash_info->read_id, &datasize,
++ &paddingsize);
++ dfc_read_fifo_partial(info->context, info->data_buf,
++ info->buf_count, datasize);
++ info->state = STATE_READY;
++#endif
++ D1(printk("ReadID, [1]:0x%x, [2]:0x%x\n",
++ info->data_buf[0], info->data_buf[1]));
++ break;
++ case NAND_CMD_STATUS:
++ info->cmd = command;
++ info->buf_count = 1;
++ info->column = 0;
++ info->addr = 0xFFFFFFFF;
++ ret = dfc_send_command(mtd, flash_info->read_status,
++ info->addr, 0, NDSR_RDDREQ);
++#ifndef CONFIG_MTD_NAND_MONAHANS_DMA
++ dfc_get_pattern(info->context, flash_info->read_status,
++ &datasize, &paddingsize);
++ dfc_read_fifo_partial(info->context, info->data_buf,
++ info->buf_count, datasize);
++ info->state = STATE_READY;
++#endif
++ break;
++
++ case NAND_CMD_RESET:
++ status = dfc_reset_flash(&dfc_context);
++ if (status) {
++ printk(KERN_WARNING "Monahans NAND device:"
++ "NAND_CMD_RESET error\n");
++ }
++ break;
++ default:
++ printk(KERN_WARNING "Monahans NAND device:"
++ "Non-support the command.\n");
++ break;
++ }
++
++ if (info->retcode != ERR_NONE)
++ dfc_stop(info->context);
++}
++
++static void monahans_df_select_chip(struct mtd_info *mtd, int chip)
++{
++ struct monahans_dfc_info *info = (struct monahans_dfc_info *)
++ (((struct nand_chip *)(mtd->priv))->priv);
++
++ if (chip <= MAX_CHIP)
++ info->context->dfc_mode->chip_select = chip;
++ else
++ printk(KERN_ERR "Monahans NAND device:"
++ "not select the NAND chips!\n");
++}
++
++static int monahans_df_waitfunc(struct mtd_info *mtd,
++ struct nand_chip *this)
++{
++ struct monahans_dfc_info *info = (struct monahans_dfc_info *)
++ (((struct nand_chip *)(mtd->priv))->priv);
++
++ /* monahans_df_send_command has waited for command complete */
++ if (this->state == FL_WRITING || this->state == FL_ERASING) {
++ if (info->retcode == ERR_NONE)
++ return 0;
++ else {
++ /*
++ * any error make it return 0x01 which will tell
++ * the caller the erase and write fail
++ */
++ return 0x01;
++ }
++ }
++
++ return 0;
++}
++
++static int monahans_df_calculate_ecc(struct mtd_info *mtd,
++ const u_char *dat, u_char *ecc_code)
++{
++ return 0;
++}
++
++static int monahans_df_correct_data(struct mtd_info *mtd,
++ u_char *dat, u_char *read_ecc, u_char *calc_ecc)
++{
++ struct monahans_dfc_info *info = (struct monahans_dfc_info *)
++ (((struct nand_chip *)(mtd->priv))->priv);
++
++ /*
++ * Any error include ERR_SEND_CMD, ERR_DBERR, ERR_BUSERR, we
++ * consider it as a ecc error which will tell the caller the
++ * read fail We have distinguish all the errors, but the
++ * nand_read_ecc only check this function return value
++ */
++ if (info->retcode != ERR_NONE)
++ return -1;
++
++ return 0;
++}
++
++static void monahans_df_enable_hwecc(struct mtd_info *mtd, int mode)
++{
++ return;
++}
++
++/*
++ * The relocation table management is different between MOBM V2 and V3.
++ *
++ * MOBM V2 is applied on chips taped out before MhnLV A0.
++ * MOBM V3 is applied on chips taped out after MhnLV A0. It's also applied
++ * on MhnLV A0.
++ */
++static int calc_obm_ver(void)
++{
++ unsigned int cpuid;
++ /* read CPU ID */
++ __asm__ (
++ "mrc p15, 0, %0, c0, c0, 0\n"
++ : "=r" (cpuid)
++ );
++ /* It's not xscale chip. */
++ if ((cpuid & 0xFFFF0000) != 0x69050000)
++ return MHN_OBM_INVAL;
++ /* It's MhnP Ax */
++ if ((cpuid & 0x0000FFF0) == 0x00006420)
++ return MHN_OBM_V2;
++ /* It's MhnP Bx */
++ if ((cpuid & 0x0000FFF0) == 0x00006820) {
++ if ((cpuid & 0x0F) <= 5)
++ return MHN_OBM_V2;
++ else
++ return MHN_OBM_V3;
++ }
++ /* It's MhnL Ax */
++ if ((cpuid & 0x0000FFF0) == 0x00006880) {
++ if ((cpuid & 0x0F) == 0)
++ return MHN_OBM_V2;
++ else
++ return MHN_OBM_V3;
++ }
++ /* It's MhnLV Ax */
++ if ((cpuid & 0x0000FFF0) == 0x00006890)
++ return MHN_OBM_V3;
++ return MHN_OBM_INVAL;
++}
++
++
++/*
++ * MOBM maintains a relocation table. It's used to replace bad blocks.
++ * If block A is bad, it will use block B instead.
++ * There're 127 relocated blocks. All of them reside in the bottom of NAND
++ * flash. So they're reserved and can't be calculated in mtd size and chip
++ * size.
++ */
++static int read_reloc_table(struct mtd_info *mtd)
++{
++ struct nand_chip *this = NULL;
++ struct monahans_dfc_info *info = NULL;
++ struct dfc_context *context = NULL;
++ struct reloc_table *table = NULL;
++ int page, maxslot;
++ int obm, valid;
++
++ obm = calc_obm_ver();
++ this = (struct nand_chip *)(mtd->priv);
++ info = (struct monahans_dfc_info *)(this->priv);
++ context = info->context;
++
++ mtd->size -= (NAND_RELOC_MAX * mtd->erasesize);
++ this->chipsize -= (NAND_RELOC_MAX << this->phys_erase_shift);
++ page = (1 << (this->phys_erase_shift - this->page_shift)) - 1;
++
++ this->select_chip(mtd, 0);
++ valid = 0;
++ if (obm == MHN_OBM_V2) {
++ /* On MOBM V2, the relocation table resides in the last page
++ * of the first block.
++ */
++ memset(info->data_buf, 0, BUFLEN);
++ monahans_df_command(mtd, NAND_CMD_READ0, 0, page);
++ memcpy(((unsigned char *)&(info->table)), info->data_buf,
++ sizeof(struct reloc_table));
++ if (info->table.header == NAND_RELOC_HEADER)
++ valid = 1;
++ } else if (obm == MHN_OBM_V3) {
++ /* On MOBM V3, there're several relocation tables in the first
++ * block.
++ * When new bad blocks are found, a new relocation table will
++ * be generated and written back to the first block. But the
++ * original relocation table won't be erased. Even if the new
++ * relocation table is written wrong, system can still find an
++ * old one.
++ * One page contains one slot.
++ */
++ maxslot = 1 << (this->phys_erase_shift - this->page_shift);
++ page = maxslot - MAX_BBT_SLOTS;
++ for (; page < maxslot; page++) {
++ monahans_df_command(mtd, NAND_CMD_READ0, 0, page);
++ table = (struct reloc_table *)info->data_buf;
++ if (info->retcode == ERR_NONE) {
++ if (table->header != NAND_RELOC_HEADER) {
++ continue;
++ } else {
++ memcpy(((unsigned char *)&(info->table)),
++ table, sizeof(struct reloc_table));
++ valid = 1;
++ break;
++ }
++ }
++ }
++
++ } else {
++ printk(KERN_ERR "The version of MOBM isn't supported\n");
++ }
++ if (valid) {
++ memcpy(((unsigned char *)&(info->table)), info->data_buf,
++ sizeof(struct reloc_table));
++ printk(KERN_DEBUG "relocation table at page:%d\n", page);
++ PRINT_BUF((unsigned char *)&(info->table),
++ sizeof(struct reloc_table));
++ info->table_init = 1;
++ } else {
++ /* There should be a valid relocation table slot at least. */
++ printk(KERN_ERR "NO VALID relocation table can be \
++ recognized\n");
++ printk(KERN_ERR "CAUTION: It may cause unpredicated error\n");
++ printk(KERN_ERR "Please re-initialize the NAND flash.\n");
++ memset((unsigned char *)&(info->table), 0,
++ sizeof(struct reloc_table));
++ info->table_init = 0;
++ return -EINVAL;
++ }
++ return 0;
++}
++
++/* add the relocation entry into the relocation table
++ * It's valid on MOBM V3.
++ * If the relocated block is bad, an new entry will be added into the
++ * bottom of the relocation table.
++ */
++static int update_rel_table(struct mtd_info *mtd, int block)
++{
++ struct nand_chip *this = NULL;
++ struct monahans_dfc_info *info = NULL;
++ struct reloc_table *table = NULL;
++ int obm, reloc_block;
++
++ this = (struct nand_chip *)(mtd->priv);
++ info = (struct monahans_dfc_info *)(this->priv);
++ obm = calc_obm_ver();
++ if (obm == MHN_OBM_V3) {
++ table = &info->table;
++ if (info->table_init == 0) {
++ printk(KERN_ERR "Error: the initial relocation \
++ table can't be read\n");
++ memset(table, 0, sizeof(struct reloc_table));
++ table->header = NAND_RELOC_HEADER;
++ info->table_init = 1;
++ }
++ if (table->total == 0) {
++ /* Point to the first relocated block.
++ * It resides in the last block of flash.
++ * the relocation entry has calculated in
++ * chipsize
++ */
++ reloc_block = (this->chipsize
++ >> this->phys_erase_shift)
++ + NAND_RELOC_MAX - 1;
++ } else if (table->total < NAND_RELOC_MAX) {
++ reloc_block = table->reloc[table->total - 1].to - 1;
++ } else {
++ printk(KERN_ERR "Relocation table exceed max number, \
++ cannot mark block 0x%x as bad block\n", block);
++ return -ENOSPC;
++ }
++ /* Make sure that reloc_block is pointing to a valid block */
++ for (; ; reloc_block--) {
++ /* The relocate table is full */
++ if (reloc_block < (this->chipsize
++ >> this->phys_erase_shift))
++ return -ENOSPC;
++ this->cmdfunc(mtd, NAND_CMD_ERASE1, 0, reloc_block
++ << (this->phys_erase_shift
++ - this->page_shift));
++ if (info->retcode == ERR_NONE)
++ break;
++ }
++ /* Create the relocated block information in the table */
++ table->reloc[table->total].from = block;
++ table->reloc[table->total].to = reloc_block;
++ table->total++;
++ }
++ return 0;
++}
++
++/* Write the relocation table back to device, if there's room. */
++static int sync_rel_table(struct mtd_info *mtd, int *idx)
++{
++ struct nand_chip *this = NULL;
++ struct monahans_dfc_info *info = NULL;
++ int obm, start_page, len;
++
++ if (*idx >= MAX_BBT_SLOTS) {
++ printk(KERN_ERR "Can't write relocation table to device \
++ any more.\n");
++ return -1;
++ }
++ if (*idx < 0) {
++ printk(KERN_ERR "Wrong Slot is specified.\n");
++ return -1;
++ }
++ this = (struct nand_chip *)(mtd->priv);
++ info = (struct monahans_dfc_info *)(this->priv);
++ len = 4;
++ len += info->table.total << 2;
++ obm = calc_obm_ver();
++ if (obm == MHN_OBM_V3) {
++ /* write to device */
++ start_page = 1 << (this->phys_erase_shift - this->page_shift);
++ start_page = start_page - 1 - *idx;
++ memset(&(info->data_buf), 0xFF, BUFLEN);
++ memcpy(&(info->data_buf), &(info->table), len);
++
++ printk(KERN_DEBUG "DUMP relocation table before write. \
++ page:0x%x\n", start_page);
++ monahans_df_command(mtd, NAND_CMD_SEQIN, 0, start_page);
++ monahans_df_command(mtd, NAND_CMD_PAGEPROG, 0, start_page);
++ /* write to idx */
++ (*idx)++;
++ /* dump it */
++ memset(&(info->data_buf), 0, BUFLEN);
++ monahans_df_command(mtd, NAND_CMD_READOOB, 0, start_page);
++ PRINT_BUF(info->data_buf, len);
++ }
++ return 0;
++}
++
++
++/* Find the relocated block of the bad one.
++ * If it's a good block, return 0. Otherwise, return a relocated one.
++ * idx points to the next relocation entry
++ * If the relocated block is bad, an new entry will be added into the
++ * bottom of the relocation table.
++ */
++static unsigned short search_rel_block(int block, struct mtd_info *mtd)
++{
++ struct nand_chip *this = NULL;
++ struct monahans_dfc_info *info = NULL;
++ struct reloc_table *table = NULL;
++ int i, max, reloc_block = 0;
++
++ this = (struct nand_chip *)(mtd->priv);
++ info = (struct monahans_dfc_info *)(this->priv);
++ table = &(info->table);
++ if ((block <= 0) || (block > this->chipsize)
++ || (info->table_init == 0) || (table->total == 0))
++ return 0;
++ if (table->total > NAND_RELOC_MAX)
++ table->total = NAND_RELOC_MAX;
++ max = table->total;
++ for (i = 0; i < max; i++) {
++ if (block == table->reloc[i].from)
++ reloc_block = table->reloc[i].to;
++ }
++ return reloc_block;
++}
++
++/*
++ * Check whether the block is a bad one.
++ * At first, it will search the relocation table.
++ * If necessary, it will search the BBT. Because relocation table can only
++ * maintain limited record. If there're more bad blocks, they can't be
++ * recorded in relocation table. They can only be recorded in BBT.
++ */
++static int monahans_df_block_bad(struct mtd_info *mtd, loff_t ofs, int getchip)
++{
++ struct nand_chip *this = NULL;
++ int page, block, reloc_block, chipnr, res = 0;
++ u16 bad;
++
++ /* At here, we only support one flash chip */
++ this = (struct nand_chip *)mtd->priv;
++ block = (int)(ofs >> this->phys_erase_shift);
++ /* search the block in the relocation table */
++ reloc_block = search_rel_block(block, mtd);
++ if (reloc_block) {
++ ofs = ((reloc_block << this->phys_erase_shift) |
++ (ofs & ((1 << this->phys_erase_shift) - 1)));
++ }
++
++ /* search BBT
++ * Maybe the relocation table is full, but some bad blocks aren't
++ * recordered in it.
++ * The below code are copied from nand_block_bad().
++ */
++ if (getchip) {
++ page = (int)(ofs >> this->page_shift);
++ chipnr = (int)(ofs >> this->chip_shift);
++
++ /* Select the NAND chips */
++ this->select_chip(mtd, chipnr);
++ } else
++ page = (int)ofs;
++
++ if (this->options & NAND_BUSWIDTH_16) {
++ this->cmdfunc(mtd, NAND_CMD_READOOB, this->badblockpos & 0xFE,
++ page & this->pagemask);
++ bad = cpu_to_le16(this->read_word(mtd));
++ if (this->badblockpos & 0x1)
++ bad >>= 1;
++ if ((bad & 0xFF) != 0xFF)
++ res = 1;
++ } else {
++ this->cmdfunc(mtd, NAND_CMD_READOOB, this->badblockpos,
++ page & this->pagemask);
++ if (this->read_byte(mtd) != 0xFF)
++ res = 1;
++ }
++
++ return res;
++}
++
++static int monahans_df_block_markbad(struct mtd_info *mtd, loff_t ofs)
++{
++ struct nand_chip *this = NULL;
++ struct monahans_dfc_info *info = NULL;
++ unsigned char buf[2] = {0, 0};
++ int block, reloc_block, page, ret;
++
++ this = (struct nand_chip *)mtd->priv;
++ info = (struct monahans_dfc_info *)(this->priv);
++ /* Get block number */
++ block = ((int)ofs) >> this->bbt_erase_shift;
++ ret = update_rel_table(mtd, block);
++ if (!ret) {
++ sync_rel_table(mtd, &(info->current_slot));
++ return 0;
++ } else {
++ reloc_block = search_rel_block(block, mtd);
++ if (reloc_block)
++ block = reloc_block;
++ if (this->bbt)
++ this->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1);
++ }
++
++ /* Do we have a flash based bad block table ? */
++ if (this->options & NAND_USE_FLASH_BBT)
++ return nand_update_bbt(mtd, ofs);
++
++ /* mark the bad block flag at the first two pages */
++ page = block << (this->phys_erase_shift - this->page_shift);
++ ofs = mtd->writesize + this->badblockpos;
++ this->cmdfunc(mtd, NAND_CMD_SEQIN, ofs, page);
++ this->write_buf(mtd, buf, 2);
++ this->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
++ page++;
++ this->cmdfunc(mtd, NAND_CMD_SEQIN, ofs, page);
++ this->write_buf(mtd, buf, 2);
++ this->cmdfunc(mtd, NAND_CMD_PAGEPROG, -1, -1);
++ return 0;
++}
++
++static int dump_bbt_flash(struct mtd_info *mtd)
++{
++ struct nand_chip *this = NULL;
++ struct monahans_dfc_info *info = NULL;
++ int block, page, totlen;
++
++ this = (struct nand_chip *)mtd->priv;
++ info = (struct monahans_dfc_info *)this->priv;
++ block = (this->chipsize >> this->phys_erase_shift) - 1;
++ totlen = (this->chipsize >> this->phys_erase_shift) >> 2;
++ printk(KERN_ERR "totlen:0x%x\n", totlen);
++ this->select_chip(mtd, 0);
++ if (this->bbt_td) {
++ printk(KERN_ERR "BBT page:0x%x\n", this->bbt_td->pages[0]);
++ page = this->bbt_td->pages[0];
++ if (this->bbt_td->pages[0] <= 0) {
++ page = block << (this->phys_erase_shift
++ - this->page_shift);
++ }
++ while (totlen > 0) {
++ printk(KERN_ERR "page:0x%x\n", page);
++ monahans_df_command(mtd, NAND_CMD_READ0, 0, page);
++ printk(KERN_ERR "read result:0x%x\n", info->retcode);
++ PRINT_BUF(info->data_buf, BUFLEN);
++ totlen -= (1 << this->page_shift);
++ page++;
++ }
++ }
++ if (this->bbt_md) {
++ printk(KERN_ERR "BBT page:0x%x\n", this->bbt_md->pages[0]);
++ page = this->bbt_md->pages[0];
++ if (this->bbt_td->pages[0] <= 0) {
++ page = block << (this->phys_erase_shift
++ - this->page_shift);
++ }
++ while (totlen > 0) {
++ printk(KERN_ERR "page:0x%x\n", page);
++ monahans_df_command(mtd, NAND_CMD_READ0, 0, page);
++ printk(KERN_ERR "read result:0x%x\n", info->retcode);
++ PRINT_BUF(info->data_buf, BUFLEN);
++ totlen -= (1 << this->page_shift);
++ page++;
++ }
++
++ }
++ return 0;
++}
++
++static int dump_bbt_mem(struct mtd_info *mtd)
++{
++ struct nand_chip *this = NULL;
++
++ this = (struct nand_chip *)mtd->priv;
++ PRINT_BUF(this->bbt, 225);
++ return 0;
++}
++
++static int monahans_df_scan_bbt(struct mtd_info *mtd)
++{
++ struct nand_chip *this = NULL;
++ int ret;
++
++ this = (struct nand_chip *)mtd->priv;
++ ret = read_reloc_table(mtd);
++ if (ret) {
++ printk(KERN_ERR "Failed to get relocation table\n");
++ printk(KERN_ERR "Try to build a new BBT. It may result \
++ unpredicated error.\n");
++ /* Create new memory based and flash based BBT */
++ }
++ nand_scan_bbt(mtd, &monahans_bbt_default);
++ //dump_bbt_flash(mtd);
++ dump_bbt_mem(mtd);
++ return 0;
++#if 0
++ /* Read flashed based BBT from device */
++ return (nand_scan_bbt(mtd, &monahans_bbt_main));
++#endif
++}
++
++
++static int monahans_df_probe(struct platform_device *pdev)
++{
++ struct nand_chip *this;
++ struct monahans_dfc_info *info;
++ int status = -1;
++ unsigned int data_buf_len;
++#ifdef CONFIG_MTD_NAND_MONAHANS_DMA
++ unsigned int buf_len;
++#endif
++ int i, ret = 0;
++
++ printk(KERN_ERR "Nand driver probe\n");
++
++ dfc_context.membase = ioremap_nocache(0x43100000, 0x100000);
++ if (!dfc_context.membase)
++ printk(KERN_ERR "Couldn't ioremap\n");
++
++ pxa_set_cken(CKEN_NAND, 1);
++
++ for (i = DFC_FLASH_NULL + 1; i < DFC_FLASH_END; i++)
++ {
++ uint32_t id;
++
++ status = dfc_init(&dfc_context, i);
++ if (status)
++ continue;
++ status = dfc_readid(&dfc_context, &id);
++ if (status)
++ continue;
++ printk(KERN_DEBUG "id:0x%x, chipid:0x%x\n",
++ id, dfc_context.flash_info->chip_id);
++ if (id == dfc_context.flash_info->chip_id)
++ break;
++ }
++
++ if(i == DFC_FLASH_END) {
++ printk(KERN_ALERT "Monahans NAND device:"
++ "Nand Flash initialize failure!\n");
++ ret = -ENXIO;
++ goto out;
++ }
++ flash_config = i;
++
++ monahans_mtd = kzalloc(sizeof(struct mtd_info) + sizeof(struct nand_chip) +
++ sizeof(struct monahans_dfc_info) , GFP_KERNEL);
++ if (!monahans_mtd) {
++ printk (KERN_ERR "Monahans NAND device:"
++ "Unable to allocate NAND MTD device structure.\n");
++ ret = -ENOMEM;
++ goto out;
++ }
++
++ /* Get pointer to private data */
++ this = (struct nand_chip *)((void *)monahans_mtd + sizeof(struct mtd_info));
++ info = (struct monahans_dfc_info *)((void *)this + sizeof(struct nand_chip));
++ dfc_context.mtd = monahans_mtd;
++
++ monahans_mtd->priv = this;
++ this->priv = info;
++ data_buf_len = dfc_context.flash_info->page_size +
++ dfc_context.flash_info->oob_size;
++ info->state = STATE_READY;
++ init_completion(&info->cmd_complete);
++ info->table_init = 0;
++ memset(&info->table, 0x0, sizeof(struct reloc_table));
++ printk(KERN_DEBUG "%s: this->controller: 0x%x, &this->controller: 0x%x\n",__func__, (unsigned int)this->controller, (unsigned int)&(this->controller));
++#ifdef CONFIG_MTD_NAND_MONAHANS_DMA
++ info->dma_mask = 0xffffffffUL;
++
++ dev->dma_mask = &info->dma_mask;
++ dev->coherent_dma_mask = 0xffffffffUL;
++
++ /* alloc dma data buffer for data
++ * buffer + 2*descriptor + command buffer
++ */
++ buf_len = ALIGN(2*sizeof(struct pxa_dma_desc), 32) +
++ ALIGN(data_buf_len, 32) + ALIGN(NAND_CMD_DMA_LEN, 32);
++
++ printk(KERN_INFO "Try to allocate dma buffer(len:%d)"
++ "for data buffer + 2*descriptor + command buffer\n", buf_len);
++ info->data_desc = (struct pxa_dma_desc*)dma_alloc_writecombine(dev,
++ buf_len, &info->data_desc_addr, GFP_KERNEL);
++ if (!info->data_desc) {
++ printk(KERN_ERR "Monahans NAND device:"
++ "Unable to alloc dma buffer\n");
++ ret = -ENOMEM;
++ goto free_mtd;
++ }
++
++ info->cmd_desc = (struct pxa_dma_desc*)((char *)info->data_desc +
++ sizeof(struct pxa_dma_desc));
++ info->cmd_desc_addr = (dma_addr_t)((char *)info->data_desc_addr +
++ sizeof(struct pxa_dma_desc));
++ info->data_buf = (char *)info->data_desc +
++ ALIGN(2*sizeof(struct pxa_dma_desc), 32);
++ info->data_buf_addr = (dma_addr_t)((char *)info->data_desc_addr +
++ ALIGN(2*sizeof(struct pxa_dma_desc), 32));
++ info->cmd_buf = (char *)info->data_buf + ALIGN(data_buf_len, 32);
++ info->cmd_buf_addr = (dma_addr_t)((char *)info->data_buf_addr +
++ ALIGN(data_buf_len, 32));
++
++ D1(printk("Get dma buffer for data dma descriptor, virt:0x%x, phys0x:%x\n",
++ (unsigned int)info->data_desc, info->data_desc_addr));
++ D1(printk("Get dma buffer for command dma descriptors, virt:0x%x,"
++ "phys0x:%x\n", (unsigned int)info->cmd_desc, info->cmd_desc_addr));
++ D1(printk("Get dma buffer for data, virt:0x%x, phys0x:%x\n",
++ (unsigned int)info->data_buf, info->data_buf_addr));
++ D1(printk("Get dma buffer for command, virt:0x%x, phys0x:%x\n",
++ (unsigned int)info->cmd_buf, info->cmd_buf_addr));
++
++ D1(printk("Try to allocate dma channel for data\n"));
++
++ info->data_dma = pxa_request_dma("NAND DATA", DMA_PRIO_LOW,
++ monahans_dfc_data_dma_irq, info);
++ if (info->data_dma < 0) {
++ printk(KERN_ERR "Monahans NAND device:"
++ "Unable to alloc dma channel for data\n");
++ ret = info->data_dma;
++ goto free_buf;
++ }
++ D1(printk("Get dma channel:%d for data\n", info->data_dma));
++
++ D1(printk("Try to allocate dma channel for command\n"));
++ info->cmd_dma = pxa_request_dma("NAND CMD", DMA_PRIO_LOW,
++ monahans_dfc_cmd_dma_irq, info);
++ if (info->cmd_dma < 0) {
++ printk(KERN_ERR "Monahans NAND device:"
++ "Unable to alloc dma channel for command\n");
++ ret = info->cmd_dma;
++ goto free_data_dma;
++ }
++ D1(printk("Get dma channel:%d for command\n", info->cmd_dma));
++
++ dfc_context.cmd_dma_ch = info->cmd_dma;
++ dfc_context.data_dma_ch = info->data_dma;
++#else
++ printk(KERN_DEBUG "Try to allocate data buffer(len:%d)\n", data_buf_len);
++ info->data_buf = kmalloc(data_buf_len, GFP_KERNEL);
++ if (!info->data_buf) {
++ printk(KERN_ERR "Monahans NAND device:"
++ "Unable to alloc data buffer\n");
++ ret = -ENOMEM;
++ goto free_mtd;
++ }
++#endif
++
++ D1(printk("Try to request irq:%d\n", IRQ_NAND));
++ ret = request_irq(IRQ_NAND, monahans_dfc_irq, 0, pdev->name, info);
++ if (ret < 0) {
++ printk(KERN_ERR "Monahans NAND device: Unable to request irq\n");
++#ifdef CONFIG_MTD_NAND_MONAHANS_DMA
++ goto free_cmd_dma;
++#else
++ goto free_buf;
++#endif
++ }
++
++ D1(printk("Success request irq\n"));
++
++ /* set address of NAND IO lines */
++ this->options = (dfc_context.flash_info->flash_width == 16)? \
++ NAND_BUSWIDTH_16: 0 | NAND_USE_FLASH_BBT;
++
++ /* this->IO_ADDR_R = this->IO_ADDR_W = NDDB */
++ this->waitfunc = monahans_df_waitfunc;
++ this->select_chip = monahans_df_select_chip;
++ this->dev_ready = monahans_df_dev_ready;
++ this->cmdfunc = monahans_df_command;
++ this->read_word= monahans_df_read_word;
++ /*this->write_word= monahans_df_write_word;*/
++ this->read_byte = monahans_df_read_byte;
++ this->read_buf = monahans_df_read_buf;
++ this->write_buf = monahans_df_write_buf;
++ this->verify_buf = monahans_df_verify_buf;
++ this->ecc.hwctl = monahans_df_enable_hwecc;
++ this->ecc.calculate = monahans_df_calculate_ecc;
++ this->ecc.correct = monahans_df_correct_data;
++ this->block_bad = monahans_df_block_bad;
++ this->block_markbad = monahans_df_block_markbad;
++ this->scan_bbt = monahans_df_scan_bbt;
++ this->chip_delay= 25;
++ this->bbt_td = &monahans_bbt_main;
++ this->bbt_md = &monahans_bbt_mirror;
++
++ /* If the NAND flash is small block flash, only 512-byte pagesize
++ * is supported.
++ * Adjust parameters of BBT what is depended on large block nand
++ * flash or small block nand flash.
++ */
++ if (dfc_context.flash_info->oob_size > 16) {
++ this->ecc.layout = &monahans_lb_nand_oob;
++ this->ecc.mode = NAND_ECC_HW;
++ this->ecc.size = 2048;
++ this->ecc.bytes = 24;
++ this->bbt_td->offs = 2;
++ this->bbt_td->veroffs = 6;
++ this->bbt_md->offs = 2;
++ this->bbt_md->veroffs = 6;
++ this->badblockpos = NAND_LARGE_BADBLOCK_POS;
++ monahans_bbt_default.offs = NAND_LARGE_BADBLOCK_POS;
++ monahans_bbt_default.len = 2;
++ /* when scan_bbt() is executed, bbt version can get */
++ monahans_bbt_default.veroffs = 2;
++ } else {
++ this->ecc.layout = &monahans_sb_nand_oob;
++ this->ecc.mode = NAND_ECC_HW;
++ this->ecc.size = 512;
++ this->ecc.bytes = 6;
++ this->bbt_td->offs = 8;
++ this->bbt_td->veroffs = 12;
++ this->bbt_md->offs = 8;
++ this->bbt_md->veroffs = 12;
++ this->badblockpos = NAND_SMALL_BADBLOCK_POS;
++ monahans_bbt_default.offs = NAND_SMALL_BADBLOCK_POS;
++ monahans_bbt_default.len = 1;
++ monahans_bbt_default.veroffs = 8;
++ }
++
++ info->context = &dfc_context;
++ /* TODO: allocate dma buffer and channel */
++
++ platform_set_drvdata(pdev, monahans_mtd);
++
++ if (nand_scan(monahans_mtd, 1)) {
++ printk(KERN_ERR "Nand scan failed\n");
++ ret = -ENXIO;
++ goto free_irq;
++ }
++
++ /* There is a potential limitation that no more partition can be
++ * added between MassStorage and BBT(last block).
++ *
++ * The last 127 blocks is reserved for relocation table, they aren't
++ * statistical data of mtd size and chip size.
++ *
++ * BBT partitions contains 4 blocks. Two blocks are used to store
++ * main descriptor, the other two are used to store mirror descriptor.
++ */
++ partition_info[PART_NUM - 1].size = (monahans_bbt_main.maxblocks
++ + monahans_bbt_mirror.maxblocks)
++ << this->phys_erase_shift;
++ partition_info[PART_NUM - 1].offset = this->chipsize
++ - partition_info[PART_NUM - 1].size;
++ partition_info[PART_NUM - 2].offset = partition_info[PART_NUM - 3].offset
++ + partition_info[PART_NUM - 3].size;
++ partition_info[PART_NUM - 2].size = this->chipsize
++ - partition_info[PART_NUM - 2].offset
++ - partition_info[PART_NUM - 1].size;
++ add_mtd_partitions(monahans_mtd, partition_info, PART_NUM);
++
++#ifdef CONFIG_DVFM
++ dvfm_notifier.client_data = info;
++ mhn_fv_register_notifier(&dvfm_notifier);
++#endif
++
++ return 0;
++
++free_irq:
++ free_irq(IRQ_NAND, info);
++#ifdef CONFIG_MTD_NAND_MONAHANS_DMA
++free_cmd_dma:
++ pxa_free_dma(info->cmd_dma);
++free_data_dma:
++ pxa_free_dma(info->data_dma);
++free_buf:
++ dma_free_writecombine(dev, buf_len, info->data_desc, info->data_desc_addr);
++#else
++free_buf:
++ kfree(info->data_buf);
++#endif
++free_mtd:
++ kfree(monahans_mtd);
++out:
++ return ret;
++
++}
++
++static int __devexit monahans_df_remove(struct platform_device *dev)
++{
++ struct mtd_info *mtd = (struct mtd_info *)platform_get_drvdata(dev);
++ struct monahans_dfc_info *info = (struct monahans_dfc_info *)
++ (((struct nand_chip *)(mtd->priv))->priv);
++#ifdef CONFIG_MTD_NAND_MONAHANS_DMA
++ unsigned int data_buf_len = dfc_context.flash_info->page_size +
++ dfc_context.flash_info->oob_size;
++ unsigned int buf_len = ALIGN(2*sizeof(struct pxa_dma_desc), 32) +
++ ALIGN(data_buf_len, 32) + ALIGN(NAND_CMD_DMA_LEN, 32);
++#endif
++
++#ifdef CONFIG_DVFM
++ mhn_fv_unregister_notifier(&dvfm_notifier);
++#endif
++
++ platform_set_drvdata(dev, NULL);
++
++ del_mtd_device(mtd);
++ del_mtd_partitions(mtd);
++ free_irq(IRQ_NAND, info);
++#ifdef CONFIG_MTD_NAND_MONAHANS_DMA
++ pxa_free_dma(info->cmd_dma);
++ pxa_free_dma(info->data_dma);
++ dma_free_writecombine(dev, buf_len, info->data_desc,
++ info->data_desc_addr);
++#else
++ kfree(info->data_buf);
++#endif
++ kfree(mtd);
++
++ return 0;
++}
++
++#ifdef CONFIG_PM
++static int monahans_df_suspend(struct platform_device *dev, pm_message_t state, u32 level)
++{
++ struct mtd_info *mtd = (struct mtd_info *)platform_get_drvdata(dev);
++ struct monahans_dfc_info *info = (struct monahans_dfc_info *)
++ (((struct nand_chip *)(mtd->priv))->priv);
++
++ if( SUSPEND_DISABLE == level){ /*SUSPEND_NOTIFY*/
++ if (info->state != STATE_READY) {
++ printk(KERN_ERR "current state is %d\n", info->state);
++ return -EAGAIN;
++ }
++ info->state = STATE_SUSPENDED;
++ /*
++ * The PM code need read the mobm from NAND.
++ * So the NAND clock can't be stop here.
++ * The PM code will cover this.
++ */
++ /* pxa_set_cken(CKEN_NAND, 0); */
++ }
++ return 0;
++}
++
++static int monahans_df_resume(struct platform_device *dev, u32 level)
++{
++ struct mtd_info *mtd = (struct mtd_info *)platform_get_drvdata(dev);
++ struct monahans_dfc_info *info = (struct monahans_dfc_info *)
++ (((struct nand_chip *)(mtd->priv))->priv);
++ int status;
++
++ if(RESUME_ENABLE == level){
++ if (info->state != STATE_SUSPENDED)
++ printk(KERN_WARNING "Error State after resume back\n");
++
++ info->state = STATE_READY;
++
++ pxa_set_cken(CKEN_NAND, 1);
++
++ status = dfc_init(&dfc_context, flash_config);
++ if (status) {
++ printk(KERN_ALERT "Monahans NAND device:"
++ "Nand Flash initialize failure!\n");
++ return -ENXIO;
++ }
++ }
++ return 0;
++}
++#endif
++
++#ifdef CONFIG_DVFM
++static int mhn_nand_dvfm_notifier(unsigned cmd, void *client_data, void *info)
++{
++ struct monahans_dfc_info *dfc_info =
++ (struct monahans_dfc_info *)client_data;
++
++ switch (cmd) {
++ case FV_NOTIFIER_QUERY_SET :
++ if (dfc_info->state != STATE_READY)
++ return -1;
++ break;
++
++ case FV_NOTIFIER_PRE_SET :
++ break;
++
++ case FV_NOTIFIER_POST_SET :
++ break;
++ }
++
++ return 0;
++}
++#endif
++
++static struct platform_driver monahans_df_driver = {
++ .probe = monahans_df_probe,
++ .remove = __devexit_p(monahans_df_remove),
++#ifdef CONFIG_PM
++ .suspend = monahans_df_suspend,
++ .resume = monahans_df_resume,
++#endif
++ .driver = {
++ .name = "monahans-nand-flash",
++ }
++};
++
++static void __exit monahans_df_cleanup(void)
++{
++ printk(KERN_ERR "Nand driver registered\n");
++ platform_driver_unregister(&monahans_df_driver);
++}
++
++static int __init monahans_df_init(void)
++{
++ return platform_driver_register(&monahans_df_driver);
++}
++
++module_init(monahans_df_init);
++module_exit(monahans_df_cleanup);
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Jingqing.xu (jingqing.xu@intel.com)");
++MODULE_DESCRIPTION("Glue logic layer for NAND flash on monahans DFC");
++
++
+Index: linux-2.6.23/arch/arm/mach-pxa/zylonite.c
+===================================================================
+--- linux-2.6.23.orig/arch/arm/mach-pxa/zylonite.c 2008-02-13 00:59:45.000000000 +0000
++++ linux-2.6.23/arch/arm/mach-pxa/zylonite.c 2008-02-13 09:11:02.000000000 +0000
+@@ -29,6 +29,8 @@
+ #include "generic.h"
+
+ int gpio_backlight;
++int gpio_vsync;
++int gpio_vsync1;
+ int gpio_eth_irq;
+
+ int lcd_id;
+@@ -54,6 +56,16 @@
+ .resource = smc91x_resources,
+ };
+
++static struct platform_device nand_device = {
++ .name = "monahans-nand-flash",
++ .id = -1,
++};
++
++static struct platform_device touch_device = {
++ .name = "pxa2xx-touch",
++ .id = -1,
++};
++
+ #if defined(CONFIG_FB_PXA) || (CONFIG_FB_PXA_MODULES)
+ static void zylonite_backlight_power(int on)
+ {
+@@ -96,7 +108,7 @@
+ };
+
+ static struct pxafb_mode_info sharp_ls037_modes[] = {
+- [0] = {
++ [1] = {
+ .pixclock = 158000,
+ .xres = 240,
+ .yres = 320,
+@@ -109,8 +121,8 @@
+ .lower_margin = 3,
+ .sync = 0,
+ },
+- [1] = {
+- .pixclock = 39700,
++ [0] = {
++ .pixclock = 45000,
+ .xres = 480,
+ .yres = 640,
+ .bpp = 16,
+@@ -137,6 +149,11 @@
+ /* backlight GPIO: output, default on */
+ gpio_direction_output(gpio_backlight, 1);
+
++ gpio_direction_output(gpio_vsync, 0);
++ gpio_direction_output(gpio_vsync1, 0);
++
++ printk(KERN_ERR "LCD ID is %x\n", lcd_id);
++
+ if (lcd_id & 0x20) {
+ set_pxa_fb_info(&zylonite_sharp_lcd_info);
+ return;
+@@ -169,6 +186,8 @@
+ smc91x_resources[1].start = gpio_to_irq(gpio_eth_irq);
+ smc91x_resources[1].end = gpio_to_irq(gpio_eth_irq);
+ platform_device_register(&smc91x_device);
++ platform_device_register(&nand_device);
++ platform_device_register(&touch_device);
+
+ zylonite_init_lcd();
+ }
+Index: linux-2.6.23/arch/arm/mach-pxa/zylonite_pxa300.c
+===================================================================
+--- linux-2.6.23.orig/arch/arm/mach-pxa/zylonite_pxa300.c 2008-02-13 00:59:45.000000000 +0000
++++ linux-2.6.23/arch/arm/mach-pxa/zylonite_pxa300.c 2008-02-13 14:01:13.000000000 +0000
+@@ -62,12 +62,12 @@
+ GPIO110_UART3_RXD,
+
+ /* AC97 */
+- GPIO23_AC97_nACRESET,
++ /*GPIO23_AC97_nACRESET,
+ GPIO24_AC97_SYSCLK,
+ GPIO29_AC97_BITCLK,
+ GPIO25_AC97_SDATA_IN_0,
+ GPIO27_AC97_SDATA_OUT,
+- GPIO28_AC97_SYNC,
++ GPIO28_AC97_SYNC,*/
+
+ /* Keypad */
+ GPIO107_KP_DKIN_0,
+@@ -104,6 +104,41 @@
+ /* Ethernet */
+ GPIO2_nCS3,
+ GPIO99_GPIO,
++
++ /* NAND */
++ MFP_CFG_X(DF_INT_RnB, AF0, DS10X, PULL_LOW),
++ MFP_CFG_X(DF_nRE_nOE, AF1, DS10X, PULL_LOW),
++ MFP_CFG_X(DF_nWE, AF1, DS10X, PULL_LOW),
++ MFP_CFG_X(DF_CLE_nOE, AF0, DS10X, PULL_LOW),
++ MFP_CFG_X(DF_nADV1_ALE, AF1, DS10X, PULL_LOW),
++ MFP_CFG_X(DF_nCS0, AF1, DS10X, PULL_LOW),
++ MFP_CFG_X(DF_nCS1, AF0, DS10X, PULL_LOW),
++ MFP_CFG_X(DF_IO0, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO1, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO2, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO3, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO4, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO5, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO6, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO7, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO8, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO9, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO10, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO11, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO12, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO13, AF1, DS08X, PULL_LOW),
++ MFP_CFG_X(DF_IO14, AF1, DS08X, PULL_LOW),
++
++ /* AC97 */
++ MFP_CFG_X(GPIO23, AF1, DS03X, PULL_LOW),
++ MFP_CFG_X(GPIO27, AF1, DS03X, PULL_LOW),
++ MFP_CFG_X(GPIO28, AF1, DS03X, PULL_LOW),
++ MFP_CFG_X(GPIO29, AF1, DS03X, PULL_LOW),
++ MFP_CFG_X(GPIO25, AF1, DS03X, PULL_LOW),
++
++ MFP_CFG_X(GPIO26, AF0, DS01X, PULL_LOW), /* Interrupt */
++ MFP_CFG_X(GPIO24, AF0, DS03X, PULL_LOW), /*SYSCLK external */
++ MFP_CFG_X(GPIO11, AF0, DS01X, PULL_LOW),
+ };
+
+ static mfp_cfg_t pxa310_mfp_cfg[] __initdata = {
+@@ -163,6 +198,9 @@
+ pxa3xx_mfp_write(lcd_detect_pins[i], mfpr_save[i]);
+ }
+
++extern int gpio_vsync;
++extern int gpio_vsync1;
++
+ void __init zylonite_pxa300_init(void)
+ {
+ if (cpu_is_pxa300() || cpu_is_pxa310()) {
+@@ -174,6 +212,8 @@
+
+ /* GPIO pin assignment */
+ gpio_backlight = mfp_to_gpio(MFP_PIN_GPIO20);
++ gpio_vsync = mfp_to_gpio(GPIO76_LCD_VSYNC);
++ gpio_vsync1 = mfp_to_gpio(GPIO71_LCD_LDD_17);
+ }
+
+ if (cpu_is_pxa300()) {
+Index: linux-2.6.23/drivers/video/pxafb.c
+===================================================================
+--- linux-2.6.23.orig/drivers/video/pxafb.c 2008-02-13 00:59:45.000000000 +0000
++++ linux-2.6.23/drivers/video/pxafb.c 2008-02-13 00:59:45.000000000 +0000
+@@ -1543,9 +1543,9 @@
+ if (inf->lccr0 & LCCR0_INVALID_CONFIG_MASK)
+ dev_warn(&dev->dev, "machine LCCR0 setting contains illegal bits: %08x\n",
+ inf->lccr0 & LCCR0_INVALID_CONFIG_MASK);
+- if (inf->lccr3 & LCCR3_INVALID_CONFIG_MASK)
+- dev_warn(&dev->dev, "machine LCCR3 setting contains illegal bits: %08x\n",
+- inf->lccr3 & LCCR3_INVALID_CONFIG_MASK);
++ //if (inf->lccr3 & LCCR3_INVALID_CONFIG_MASK)
++ // dev_warn(&dev->dev, "machine LCCR3 setting contains illegal bits: %08x\n",
++ // inf->lccr3 & LCCR3_INVALID_CONFIG_MASK);
+ if (inf->lccr0 & LCCR0_DPD &&
+ ((inf->lccr0 & LCCR0_PAS) != LCCR0_Pas ||
+ (inf->lccr0 & LCCR0_SDS) != LCCR0_Sngl ||
+Index: linux-2.6.23/include/asm-arm/arch-pxa/mfp-pxa300.h
+===================================================================
+--- linux-2.6.23.orig/include/asm-arm/arch-pxa/mfp-pxa300.h 2008-02-13 00:59:45.000000000 +0000
++++ linux-2.6.23/include/asm-arm/arch-pxa/mfp-pxa300.h 2008-02-13 00:59:45.000000000 +0000
+@@ -175,13 +175,13 @@
+ #define GPIO68_LCD_LDD_14 MFP_CFG_DRV(GPIO68, AF1, DS01X)
+ #define GPIO69_LCD_LDD_15 MFP_CFG_DRV(GPIO69, AF1, DS01X)
+ #define GPIO70_LCD_LDD_16 MFP_CFG_DRV(GPIO70, AF1, DS01X)
+-#define GPIO71_LCD_LDD_17 MFP_CFG_DRV(GPIO71, AF1, DS01X)
++#define GPIO71_LCD_LDD_17 MFP_CFG_DRV(GPIO71, AF0, DS01X)
+ #define GPIO62_LCD_CS_N MFP_CFG_DRV(GPIO62, AF2, DS01X)
+ #define GPIO72_LCD_FCLK MFP_CFG_DRV(GPIO72, AF1, DS01X)
+ #define GPIO73_LCD_LCLK MFP_CFG_DRV(GPIO73, AF1, DS01X)
+ #define GPIO74_LCD_PCLK MFP_CFG_DRV(GPIO74, AF1, DS01X)
+ #define GPIO75_LCD_BIAS MFP_CFG_DRV(GPIO75, AF1, DS01X)
+-#define GPIO76_LCD_VSYNC MFP_CFG_DRV(GPIO76, AF2, DS01X)
++#define GPIO76_LCD_VSYNC MFP_CFG_DRV(GPIO76, AF0, DS01X)
+
+ #define GPIO15_LCD_CS_N MFP_CFG_DRV(GPIO15, AF2, DS01X)
+ #define GPIO127_LCD_CS_N MFP_CFG_DRV(GPIO127, AF1, DS01X)
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-06-17 15:38:47 +0000