forked from len0rd/rockbox
Updated TCC780x NAND driver. Still work-in-progress but lots better than the previous version.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16878 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Rob Purchase
parent
4fd277481a
commit
edf6d90ca4
1 changed files with 383 additions and 193 deletions
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@ -18,14 +18,18 @@
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****************************************************************************/
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#include "ata.h"
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#include "ata-target.h"
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#include "ata_idle_notify.h"
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#include "system.h"
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#include <string.h>
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#include "thread.h"
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#include "led.h"
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#include "disk.h"
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#include "panic.h"
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#include "usb.h"
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/* The NAND driver is currently work-in-progress and as such contains
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some dead code and debug stuff, such as the next few lines. */
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#if defined(BOOTLOADER)
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#include "../../../../bootloader/common.h" /* for printf */
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extern int line;
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#endif
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/* for compatibility */
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int ata_spinup_time = 0;
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@ -58,6 +62,21 @@ static struct mutex ata_mtx NOCACHEBSS_ATTR;
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#define NFC_CS1 (1<<22)
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#define NFC_READY (1<<20)
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#define ECC_CTRL (*(volatile unsigned long *)0xF005B000)
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#define ECC_BASE (*(volatile unsigned long *)0xF005B004)
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#define ECC_CLR (*(volatile unsigned long *)0xF005B00C)
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#define ECC_MLC0W (*(volatile unsigned long *)0xF005B030)
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#define ECC_MLC1W (*(volatile unsigned long *)0xF005B034)
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#define ECC_MLC2W (*(volatile unsigned long *)0xF005B038)
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#define ECC_ERR (*(volatile unsigned long *)0xF005B070)
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#define ECC_ERRADDR (*(volatile unsigned long *)0xF005B050)
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#define ECC_ERRDATA (*(volatile unsigned long *)0xF005B060)
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/* ECC_CTRL flags */
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#define ECC_M4EN (1<<6)
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#define ECC_ENC (1<<27)
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#define ECC_READY (1<<26)
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/* Chip characteristics, initialised by nand_get_chip_info() */
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static int page_size = 0;
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@ -71,20 +90,79 @@ static int total_banks = 0;
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static int sectors_per_page = 0;
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static int bytes_per_segment = 0;
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static int sectors_per_segment = 0;
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static int segments_per_bank = 0;
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/* Maximum values for static buffers */
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#define MAX_PAGE_SIZE 4096
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#define MAX_SPARE_SIZE 128
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#define MAX_BLOCKS_PER_BANK 8192
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#define MAX_BANKS 4
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#define MAX_PAGES_PER_BLOCK 128
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/*
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Block translation table - maps logical Segment Number to physical page address
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Format: 0xBTPPPPPP (B = Bank; T = Block Type flag; P = Page Address)
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*/
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static int segment_location[MAX_BLOCKS_PER_BANK * MAX_BANKS / 4];
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/* In theory we can support 4 banks, but only 2 have been seen on 2/4/8Gb D2s. */
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#ifdef COWON_D2
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#define MAX_BANKS 2
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#else
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#define MAX_BANKS 4
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#endif
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#define MAX_SEGMENTS (MAX_BLOCKS_PER_BANK * MAX_BANKS / 4)
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/* Logical/Physical translation table */
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struct lpt_entry
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{
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short chip;
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short phys_segment;
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//short segment_flag;
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};
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static struct lpt_entry lpt_lookup[MAX_SEGMENTS];
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/* Write Caches */
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#define MAX_WRITE_CACHES 8
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struct write_cache
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{
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short chip;
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short phys_segment;
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short log_segment;
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short page_map[MAX_PAGES_PER_BLOCK * 4];
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};
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static struct write_cache write_caches[MAX_WRITE_CACHES];
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static int write_caches_in_use = 0;
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/* Read buffer */
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unsigned int page_buf[(MAX_PAGE_SIZE + MAX_SPARE_SIZE) / 4];
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/* Conversion functions */
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static inline int phys_segment_to_page_addr(int phys_segment, int page_in_seg)
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{
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int page_addr = phys_segment * pages_per_block * 2;
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if (page_in_seg & 1)
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{
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/* Data is located in block+1 */
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page_addr += pages_per_block;
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}
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if (page_in_seg & 2)
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{
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/* Data is located in second plane */
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page_addr += (blocks_per_bank/2) * pages_per_block;
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}
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page_addr += page_in_seg/4;
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return page_addr;
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}
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/* NAND physical access functions */
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static void nand_chip_select(int chip)
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{
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@ -123,6 +201,8 @@ static void nand_chip_select(int chip)
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static void nand_read_id(int chip, unsigned char* id_buf)
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{
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int i;
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/* Enable NFC bus clock */
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BCLKCTR |= DEV_NAND;
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@ -147,12 +227,11 @@ static void nand_read_id(int chip, unsigned char* id_buf)
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NFC_CMD = 0x90;
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NFC_SADDR = 0x00;
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/* Read the 5 single bytes */
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id_buf[0] = NFC_SDATA & 0xFF;
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id_buf[1] = NFC_SDATA & 0xFF;
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id_buf[2] = NFC_SDATA & 0xFF;
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id_buf[3] = NFC_SDATA & 0xFF;
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id_buf[4] = NFC_SDATA & 0xFF;
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/* Read the 5 chip ID bytes */
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for (i = 0; i < 5; i++)
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{
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id_buf[i] = NFC_SDATA & 0xFF;
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}
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nand_chip_select(-1);
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@ -213,14 +292,9 @@ static void nand_read_uid(int chip, unsigned int* uid_buf)
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}
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/* NB: size must be divisible by 4 due to 32-bit read */
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static void nand_read_raw(int chip, int row, int column, int size, void* buf)
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{
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int i;
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/* Currently this relies on a word-aligned input buffer */
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unsigned int* int_buf = (unsigned int*)buf;
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if ((unsigned int)buf & 3) panicf("nand_read_raw() non-aligned input buffer");
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/* Enable NFC bus clock */
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BCLKCTR |= DEV_NAND;
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@ -260,57 +334,31 @@ static void nand_read_raw(int chip, int row, int column, int size, void* buf)
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while (!(NFC_CTRL & NFC_READY)) {};
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/* Read data into page buffer */
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for (i = 0; i < (size/4); i++)
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if (((unsigned int)buf & 3) || (size & 3))
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{
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int_buf[i] = NFC_WDATA;
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/* Use byte copy since either the buffer or size are not word-aligned */
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/* TODO: Byte copy only where necessary (use words for mid-section) */
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for (i = 0; i < size; i++)
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{
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((unsigned char*)buf)[i] = NFC_SDATA;
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}
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}
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else
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{
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/* Use 4-byte copy as buffer and size are both word-aligned */
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for (i = 0; i < (size/4); i++)
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{
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((unsigned int*)buf)[i] = NFC_WDATA;
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}
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}
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nand_chip_select(-1);
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/* Disable NFC bus clock */
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BCLKCTR &= ~DEV_NAND;
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}
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/* NB: Output buffer must currently be word-aligned */
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static bool nand_read_sector(int segment, int sector, void* buf)
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{
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int physaddr = segment_location[segment];
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int bank = physaddr >> 28;
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int page = physaddr & 0xffffff;
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int page_in_seg = sector / sectors_per_page;
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int sec_in_page = sector % sectors_per_page;
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/* TODO: Check if there are any 0x15 pages referring to this segment/sector
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combination. If present we need to read that data instead. */
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if (physaddr == -1) return false;
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if (page_in_seg & 1)
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{
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/* Data is located in block+1 */
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page += pages_per_block;
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}
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if (page_in_seg & 2)
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{
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/* Data is located in second plane */
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page += (blocks_per_bank/2) * pages_per_block;
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}
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page += page_in_seg/4;
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nand_read_raw(bank, page,
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sec_in_page * (SECTOR_SIZE+16),
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SECTOR_SIZE, buf);
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/* TODO: Read the 16 spare bytes, perform ECC correction */
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return true;
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}
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static void nand_get_chip_info(void)
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{
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bool found = false;
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@ -362,6 +410,7 @@ static void nand_get_chip_info(void)
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}
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pages_per_bank = blocks_per_bank * pages_per_block;
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segments_per_bank = blocks_per_bank / 4;
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bytes_per_segment = page_size * pages_per_block * 4;
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sectors_per_page = page_size / SECTOR_SIZE;
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sectors_per_segment = bytes_per_segment / SECTOR_SIZE;
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@ -405,97 +454,238 @@ static void nand_get_chip_info(void)
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/* Bank 1 returned differing id - assume it is junk */
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total_banks = 1;
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}
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/*
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Sanity checks:
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/* Check block 0, page 0 for "BMPM" string & total_banks byte. If this is
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confirmed for all D2s we can remove the above code & nand_read_uid(). */
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1. "BMP" tag at block 0, page 0, offset <page_size> [always present]
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2. Byte at <page_size>+4 contains number of banks [or 0xff if 1 bank]
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If this is confirmed for all D2s we can simplify the above code and
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also remove the icky nand_read_uid() function.
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*/
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nand_read_raw(0, /* bank */
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0, /* page */
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page_size, /* offset */
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8, id_buf);
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if (strncmp(id_buf, "BMP", 3)) panicf("BMP tag not present");
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if (strncmp(id_buf, "BMPM", 4)) panicf("BMPM tag not present");
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if (id_buf[4] != total_banks) panicf("BMPM total_banks mismatch");
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if (total_banks > 1)
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{
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if (id_buf[4] != total_banks) panicf("BMPM total_banks mismatch");
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}
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}
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/* TEMP testing function */
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static bool nand_read_sector_of_phys_page(int chip, int page,
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int sector, void* buf)
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{
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nand_read_raw(chip, page,
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sector * (SECTOR_SIZE+16),
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SECTOR_SIZE, buf);
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/* TODO: Read the 16 spare bytes, perform ECC correction */
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return true;
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}
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static bool nand_read_sector_of_phys_segment(int chip, int phys_segment,
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int page_in_seg, int sector,
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void* buf)
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{
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int page_addr = phys_segment_to_page_addr(phys_segment,
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page_in_seg);
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return nand_read_sector_of_phys_page(chip, page_addr, sector, buf);
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}
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static bool nand_read_sector_of_logical_segment(int log_segment, int sector,
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void* buf)
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{
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int page_in_segment = sector / sectors_per_page;
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int sector_in_page = sector % sectors_per_page;
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int chip = lpt_lookup[log_segment].chip;
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int phys_segment = lpt_lookup[log_segment].phys_segment;
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/* Check if any of the write caches refer to this segment/page.
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If present we need to read the cached page instead. */
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int cache_num = 0;
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bool found = false;
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while (!found && cache_num < write_caches_in_use)
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{
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if (write_caches[cache_num].log_segment == log_segment
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&& write_caches[cache_num].page_map[page_in_segment] != -1)
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{
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found = true;
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chip = write_caches[cache_num].chip;
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phys_segment = write_caches[cache_num].phys_segment;
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page_in_segment = write_caches[cache_num].page_map[page_in_segment];
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}
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else
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{
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cache_num++;
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}
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}
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return nand_read_sector_of_phys_segment(chip, phys_segment,
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page_in_segment,
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sector_in_page, buf);
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}
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#if 0 // LPT table is work-in-progress
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static void read_lpt_block(int chip, int phys_segment)
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{
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int page = 1; /* table starts at page 1 of segment */
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bool cont = true;
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struct lpt_entry* lpt_ptr = NULL;
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while (cont && page < pages_per_block)
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{
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int i = 0;
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nand_read_sector_of_phys_segment(chip, phys_segment,
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page, 0, /* only sector 0 is used */
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page_buf);
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/* Find out which chunk of the LPT table this section contains.
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Do this by reading the logical segment number of entry 0 */
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if (lpt_ptr == NULL)
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{
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int first_chip = page_buf[0] / segments_per_bank;
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int first_phys_segment = page_buf[0] % segments_per_bank;
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unsigned char spare_buf[16];
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nand_read_raw(first_chip,
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phys_segment_to_page_addr(first_phys_segment, 0),
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SECTOR_SIZE, /* offset */
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16, spare_buf);
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int first_log_segment = (spare_buf[6] << 8) | spare_buf[7];
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lpt_ptr = &lpt_lookup[first_log_segment];
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#if defined(BOOTLOADER) && 1
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printf("lpt @ %lx:%lx (ls:%lx)",
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first_chip, first_phys_segment, first_log_segment);
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#endif
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}
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while (cont && (i < SECTOR_SIZE/4))
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{
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if (page_buf[i] != 0xFFFFFFFF)
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{
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lpt_ptr->chip = page_buf[i] / segments_per_bank;
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lpt_ptr->phys_segment = page_buf[i] % segments_per_bank;
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lpt_ptr++;
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i++;
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}
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else cont = false;
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}
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page++;
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}
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}
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#endif
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static void read_write_cache_segment(int chip, int phys_segment)
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{
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int page;
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unsigned char spare_buf[16];
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if (write_caches_in_use == MAX_WRITE_CACHES)
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panicf("Max NAND write caches reached");
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write_caches[write_caches_in_use].chip = chip;
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write_caches[write_caches_in_use].phys_segment = phys_segment;
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/* Loop over each page in the phys segment (from page 1 onwards).
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Read spare for 1st sector, store location of page in array. */
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for (page = 1; page < pages_per_block * 4; page++)
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{
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unsigned short cached_page;
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unsigned short log_segment;
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nand_read_raw(chip, phys_segment_to_page_addr(phys_segment, page),
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SECTOR_SIZE, /* offset to first sector's spare */
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16, spare_buf);
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cached_page = (spare_buf[3] << 8) | spare_buf[2]; /* why does endian */
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log_segment = (spare_buf[6] << 8) | spare_buf[7]; /* -ness differ? */
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if (cached_page != 0xFFFF)
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{
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write_caches[write_caches_in_use].log_segment = log_segment;
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write_caches[write_caches_in_use].page_map[cached_page] = page;
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}
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}
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write_caches_in_use++;
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}
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/* TEMP testing functions */
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#ifdef BOOTLOADER
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#include "lcd.h"
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extern int line;
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unsigned int buf[(MAX_PAGE_SIZE + MAX_SPARE_SIZE) / 4];
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#if 0
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static void display_page(int chip, int page)
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{
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int i;
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nand_read_raw(chip, page, 0, page_size+spare_size, page_buf);
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for (i = 0; i < (page_size+spare_size)/4; i += 132)
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{
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int j,interesting = 0;
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line = 1;
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printf("c:%d p:%lx s:%d", chip, page, i/128);
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for (j=i; j<(i+131); j++)
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{
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if (page_buf[j] != 0xffffffff) interesting = 1;
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}
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if (interesting)
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{
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for (j=i; j<(i+131); j+=8)
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{
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printf("%lx %lx %lx %lx %lx %lx %lx %lx",
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page_buf[j],page_buf[j+1],page_buf[j+2],page_buf[j+3],
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page_buf[j+4],page_buf[j+5],page_buf[j+6],page_buf[j+7]);
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}
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while (!button_read_device()) {};
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while (button_read_device()) {};
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reset_screen();
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}
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}
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}
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#endif
|
||||
|
||||
static void nand_test(void)
|
||||
{
|
||||
int i;
|
||||
unsigned int seq_segments = 0;
|
||||
#if 0
|
||||
int chip,page;
|
||||
#endif
|
||||
int segment = 0;
|
||||
|
||||
printf("%d banks", total_banks);
|
||||
printf("* %d pages", pages_per_bank);
|
||||
printf("* %d bytes per page", page_size);
|
||||
|
||||
i = 0;
|
||||
while (segment_location[i] != -1
|
||||
&& i++ < (blocks_per_bank * total_banks / 4))
|
||||
while (lpt_lookup[segment].chip != -1
|
||||
&& segment < segments_per_bank * total_banks)
|
||||
{
|
||||
seq_segments++;
|
||||
segment++;
|
||||
}
|
||||
printf("%d sequential segments found (%dMb)", seq_segments,
|
||||
(seq_segments*bytes_per_segment)>>20);
|
||||
|
||||
while (!button_read_device()) {};
|
||||
while (button_read_device()) {};
|
||||
|
||||
#if 0
|
||||
/* Read & display sequential pages */
|
||||
for (chip = 0; chip < total_banks; chip++)
|
||||
{
|
||||
for (page = 0x0; page < 0x100; page++)
|
||||
{
|
||||
nand_read_raw(chip, page, 0, page_size+spare_size, buf);
|
||||
|
||||
for (i = 0; i < (page_size+spare_size)/4; i += 132)
|
||||
{
|
||||
int j,interesting = 0;
|
||||
line = 0;
|
||||
printf("c:%d p:%lx i:%d", chip, page, i);
|
||||
|
||||
for (j=i; j<(i+131); j++)
|
||||
{
|
||||
if (buf[j] != 0xffffffff) interesting = 1;
|
||||
}
|
||||
|
||||
if (interesting)
|
||||
{
|
||||
for (j=i; j<(i+63); j+=4)
|
||||
{
|
||||
printf("%lx %lx %lx %lx",
|
||||
buf[j], buf[j+1], buf[j+2], buf[j+3]);
|
||||
}
|
||||
printf("--->");
|
||||
while (!button_read_device()) {};
|
||||
while (button_read_device()) {};
|
||||
|
||||
line = 1;
|
||||
printf("<---");
|
||||
for (j=j; j<(i+131); j+=4)
|
||||
{
|
||||
printf("%lx %lx %lx %lx",
|
||||
buf[j], buf[j+1], buf[j+2], buf[j+3]);
|
||||
}
|
||||
while (!button_read_device()) {};
|
||||
while (button_read_device()) {};
|
||||
reset_screen();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif
|
||||
printf("%d sequential segments found (%dMb)",
|
||||
segment, (unsigned)(segment*bytes_per_segment)>>20);
|
||||
}
|
||||
#endif
|
||||
|
||||
|
|
@ -523,7 +713,7 @@ int ata_read_sectors(IF_MV2(int drive,) unsigned long start, int incount,
|
|||
|
||||
while (incount > 0 && secmod < sectors_per_segment)
|
||||
{
|
||||
if (!nand_read_sector(segment, secmod, inbuf))
|
||||
if (!nand_read_sector_of_logical_segment(segment, secmod, inbuf))
|
||||
{
|
||||
mutex_unlock(&ata_mtx);
|
||||
return -1;
|
||||
|
|
@ -554,7 +744,7 @@ int ata_write_sectors(IF_MV2(int drive,) unsigned long start, int count,
|
|||
(void)start;
|
||||
(void)count;
|
||||
(void)outbuf;
|
||||
return 0;
|
||||
return -1;
|
||||
}
|
||||
|
||||
void ata_spindown(int seconds)
|
||||
|
|
@ -600,81 +790,81 @@ void ata_enable(bool on)
|
|||
|
||||
int ata_init(void)
|
||||
{
|
||||
int i, bank, page;
|
||||
unsigned int spare_buf[4];
|
||||
|
||||
if (initialized) return 0;
|
||||
int i, bank, phys_segment;
|
||||
unsigned char spare_buf[16];
|
||||
|
||||
if (initialized) return 0;
|
||||
|
||||
/* Get chip characteristics and number of banks */
|
||||
nand_get_chip_info();
|
||||
|
||||
for (i = 0; i < (MAX_BLOCKS_PER_BANK * MAX_BANKS / 4); i++)
|
||||
|
||||
for (i = 0; i < MAX_SEGMENTS; i++)
|
||||
{
|
||||
segment_location[i] = -1;
|
||||
lpt_lookup[i].chip = -1;
|
||||
lpt_lookup[i].phys_segment = -1;
|
||||
//lpt_lookup[i].segment_flag = -1;
|
||||
}
|
||||
|
||||
write_caches_in_use = 0;
|
||||
|
||||
for (i = 0; i < MAX_WRITE_CACHES; i++)
|
||||
{
|
||||
int page;
|
||||
|
||||
write_caches[i].log_segment = -1;
|
||||
write_caches[i].chip = -1;
|
||||
write_caches[i].phys_segment = -1;
|
||||
|
||||
for (page = 0; page < MAX_PAGES_PER_BLOCK * 4; page++)
|
||||
{
|
||||
write_caches[i].page_map[page] = -1;
|
||||
}
|
||||
}
|
||||
|
||||
/* Scan banks to build up block translation table */
|
||||
for (bank = 0; bank < total_banks; bank++)
|
||||
{
|
||||
for (page = 0; page < pages_per_bank/2; page += pages_per_block*2)
|
||||
for (phys_segment = 0; phys_segment < segments_per_bank; phys_segment++)
|
||||
{
|
||||
unsigned char segment_flag;
|
||||
unsigned char stored_flag;
|
||||
unsigned short segment_id;
|
||||
|
||||
unsigned char* buf_ptr = (unsigned char*)spare_buf;
|
||||
|
||||
/* Read spare bytes from first sector of each segment */
|
||||
nand_read_raw(bank, page,
|
||||
nand_read_raw(bank, phys_segment_to_page_addr(phys_segment, 0),
|
||||
SECTOR_SIZE, /* offset */
|
||||
16, spare_buf);
|
||||
|
||||
segment_id = (buf_ptr[6] << 8) | buf_ptr[7];
|
||||
segment_flag = buf_ptr[4];
|
||||
|
||||
stored_flag = (segment_location[segment_id] >> 24) & 0xf;
|
||||
|
||||
#if defined(BOOTLOADER) && 0
|
||||
if (segment_flag == 0x15)
|
||||
switch (spare_buf[4]) /* block type */
|
||||
{
|
||||
printf("Segment %lx: c:%lx p:%lx, type:%lx, stored:x%lx",
|
||||
segment_id, bank, page, segment_flag, stored_flag);
|
||||
while (!button_read_device()) {};
|
||||
while (button_read_device()) {};
|
||||
}
|
||||
#endif
|
||||
|
||||
if (segment_flag == 0x13 || segment_flag == 0x17)
|
||||
{
|
||||
if (segment_id < (blocks_per_bank * total_banks / 4))
|
||||
{
|
||||
#if defined(BOOTLOADER) && 0
|
||||
if (segment_location[segment_id] != -1 && stored_flag != 0x3)
|
||||
{
|
||||
int orig_bank = segment_location[segment_id] >> 28;
|
||||
int orig_page = segment_location[segment_id] & 0xFFFFFF;
|
||||
|
||||
printf("Segment %d already set! (stored flag:x%lx)",
|
||||
segment_id, stored_flag);
|
||||
|
||||
printf("0x%08x 0x%08x 0x%08x 0x%08x",
|
||||
spare_buf[0],spare_buf[1],spare_buf[2],spare_buf[3]);
|
||||
|
||||
nand_read_raw(orig_bank, orig_page,
|
||||
SECTOR_SIZE,
|
||||
16, spare_buf);
|
||||
|
||||
printf("0x%08x 0x%08x 0x%08x 0x%08x",
|
||||
spare_buf[0],spare_buf[1],spare_buf[2],spare_buf[3]);
|
||||
}
|
||||
#endif
|
||||
/* Write bank, block type & physical address into table */
|
||||
segment_location[segment_id]
|
||||
= page | (bank << 28) | ((segment_flag & 0xf) << 24);
|
||||
}
|
||||
else
|
||||
case 0x12:
|
||||
{
|
||||
panicf("Invalid segment id:%d found", segment_id);
|
||||
/* Log->Phys Translation table (for Main data area) */
|
||||
//read_lpt_block(bank, phys_segment);
|
||||
break;
|
||||
}
|
||||
|
||||
case 0x13:
|
||||
case 0x17:
|
||||
{
|
||||
/* Main data area segment */
|
||||
int segment = (spare_buf[6] << 8) | spare_buf[7];
|
||||
|
||||
if (segment < MAX_SEGMENTS)
|
||||
{
|
||||
/* Store in LPT if not present or 0x17 overrides 0x13 */
|
||||
//if (lpt_lookup[segment].segment_flag == -1 ||
|
||||
// lpt_lookup[segment].segment_flag == 0x13)
|
||||
{
|
||||
lpt_lookup[segment].chip = bank;
|
||||
lpt_lookup[segment].phys_segment = phys_segment;
|
||||
//lpt_lookup[segment].segment_flag = spare_buf[4];
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
case 0x15:
|
||||
{
|
||||
/* Recently-written page data (for Main data area) */
|
||||
read_write_cache_segment(bank, phys_segment);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue