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spectra: Add basic mtd support

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Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Woodhouse
2009-10-14 23:09:13 +01:00
parent 44fa63fc23
commit b589aece50
6 changed files with 823 additions and 0 deletions
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7
drivers/block/spectra/Kconfig
View File

@@ -18,6 +18,13 @@ config MRST_NAND_HW
Driver communicates with the actual hardware's register interface.
in DMA mode.
config MRST_NAND_MTD
bool "Linux MTD mode"
depends on MTD
help
Driver communicates with the kernel MTD subsystem instead of its own
built-in hardware driver.
config MRST_NAND_EMU
bool "RAM emulator testing"
help

1
drivers/block/spectra/Makefile
View File

@@ -7,4 +7,5 @@ spectra-y := ffsport.o flash.o lld.o
spectra-$(CONFIG_MRST_NAND_HW) += lld_nand.o
spectra-$(CONFIG_MRST_NAND_HW_DMA) += lld_cdma.o
spectra-$(CONFIG_MRST_NAND_EMU) += lld_emu.o
spectra-$(CONFIG_MRST_NAND_MTD) += lld_mtd.o

79
drivers/block/spectra/lld.c
View File

@@ -103,6 +103,85 @@ u16 GLOB_LLD_Get_Bad_Block(u32 block)
#endif /* FLASH_EMU */
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
#if FLASH_MTD /* vector all the LLD calls to the LLD_MTD code */
#include "lld_mtd.h"
#include "lld_cdma.h"
/* common functions: */
u16 GLOB_LLD_Flash_Reset(void)
{
return mtd_Flash_Reset();
}
u16 GLOB_LLD_Read_Device_ID(void)
{
return mtd_Read_Device_ID();
}
int GLOB_LLD_Flash_Release(void)
{
return mtd_Flash_Release();
}
u16 GLOB_LLD_Flash_Init(void)
{
return mtd_Flash_Init();
}
u16 GLOB_LLD_Erase_Block(u32 block_add)
{
return mtd_Erase_Block(block_add);
}
u16 GLOB_LLD_Write_Page_Main(u8 *write_data, u32 block, u16 Page,
u16 PageCount)
{
return mtd_Write_Page_Main(write_data, block, Page, PageCount);
}
u16 GLOB_LLD_Read_Page_Main(u8 *read_data, u32 block, u16 Page,
u16 PageCount)
{
return mtd_Read_Page_Main(read_data, block, Page, PageCount);
}
u16 GLOB_LLD_Read_Page_Main_Polling(u8 *read_data,
u32 block, u16 page, u16 page_count)
{
return mtd_Read_Page_Main(read_data, block, page, page_count);
}
u16 GLOB_LLD_Write_Page_Main_Spare(u8 *write_data, u32 block,
u16 Page, u16 PageCount)
{
return mtd_Write_Page_Main_Spare(write_data, block, Page, PageCount);
}
u16 GLOB_LLD_Read_Page_Main_Spare(u8 *read_data, u32 block,
u16 Page, u16 PageCount)
{
return mtd_Read_Page_Main_Spare(read_data, block, Page, PageCount);
}
u16 GLOB_LLD_Write_Page_Spare(u8 *write_data, u32 block, u16 Page,
u16 PageCount)
{
return mtd_Write_Page_Spare(write_data, block, Page, PageCount);
}
u16 GLOB_LLD_Read_Page_Spare(u8 *read_data, u32 block, u16 Page,
u16 PageCount)
{
return mtd_Read_Page_Spare(read_data, block, Page, PageCount);
}
u16 GLOB_LLD_Get_Bad_Block(u32 block)
{
return mtd_Get_Bad_Block(block);
}
#endif /* FLASH_MTD */
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
#if FLASH_NAND /* vector all the LLD calls to the NAND controller code */

684
drivers/block/spectra/lld_mtd.c Normal file
View File

@@ -0,0 +1,684 @@
/*
* NAND Flash Controller Device Driver
* Copyright (c) 2009, Intel Corporation and its suppliers.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/mtd/mtd.h>
#include "flash.h"
#include "ffsdefs.h"
#include "lld_emu.h"
#include "lld.h"
#if CMD_DMA
#include "lld_cdma.h"
#endif
#define GLOB_LLD_PAGES 64
#define GLOB_LLD_PAGE_SIZE (512+16)
#define GLOB_LLD_PAGE_DATA_SIZE 512
#define GLOB_LLD_BLOCKS 2048
#if CMD_DMA
#include "lld_cdma.h"
u32 totalUsedBanks;
u32 valid_banks[MAX_CHANS];
#endif
static struct mtd_info *spectra_mtd;
static int mtddev = -1;
module_param(mtddev, int, 0);
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
* Function: mtd_Flash_Init
* Inputs: none
* Outputs: PASS=0 (notice 0=ok here)
* Description: Creates & initializes the flash RAM array.
*
*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
u16 mtd_Flash_Init(void)
{
if (mtddev == -1) {
printk(KERN_ERR "No MTD device specified. Give mtddev parameter\n");
return FAIL;
}
spectra_mtd = get_mtd_device(NULL, mtddev);
if (!spectra_mtd) {
printk(KERN_ERR "Failed to obtain MTD device #%d\n", mtddev);
return FAIL;
}
nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
__FILE__, __LINE__, __func__);
return PASS;
}
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
* Function: mtd_Flash_Release
* Inputs: none
* Outputs: PASS=0 (notice 0=ok here)
* Description: Releases the flash.
*
*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
int mtd_Flash_Release(void)
{
nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
__FILE__, __LINE__, __func__);
if (!spectra_mtd)
return PASS;
put_mtd_device(spectra_mtd);
spectra_mtd = NULL;
return PASS;
}
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
* Function: mtd_Read_Device_ID
* Inputs: none
* Outputs: PASS=1 FAIL=0
* Description: Reads the info from the controller registers.
* Sets up DeviceInfo structure with device parameters
*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
u16 mtd_Read_Device_ID(void)
{
nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
__FILE__, __LINE__, __func__);
if (!spectra_mtd)
return FAIL;
DeviceInfo.wDeviceMaker = 0;
DeviceInfo.wDeviceType = 8;
DeviceInfo.wSpectraStartBlock = SPECTRA_START_BLOCK;
DeviceInfo.wTotalBlocks = spectra_mtd->size / spectra_mtd->erasesize;
DeviceInfo.wSpectraEndBlock = DeviceInfo.wTotalBlocks - 1;
DeviceInfo.wPagesPerBlock = spectra_mtd->erasesize / spectra_mtd->writesize;
DeviceInfo.wPageSize = spectra_mtd->writesize + spectra_mtd->oobsize;
DeviceInfo.wPageDataSize = spectra_mtd->writesize;
DeviceInfo.wPageSpareSize = spectra_mtd->oobsize;
DeviceInfo.wBlockSize = DeviceInfo.wPageSize * DeviceInfo.wPagesPerBlock;
DeviceInfo.wBlockDataSize = DeviceInfo.wPageDataSize * DeviceInfo.wPagesPerBlock;
DeviceInfo.wDataBlockNum = (u32) (DeviceInfo.wSpectraEndBlock -
DeviceInfo.wSpectraStartBlock
+ 1);
DeviceInfo.MLCDevice = 0;//spectra_mtd->celltype & NAND_CI_CELLTYPE_MSK;
DeviceInfo.nBitsInPageNumber =
(u8)GLOB_Calc_Used_Bits(DeviceInfo.wPagesPerBlock);
DeviceInfo.nBitsInPageDataSize =
(u8)GLOB_Calc_Used_Bits(DeviceInfo.wPageDataSize);
DeviceInfo.nBitsInBlockDataSize =
(u8)GLOB_Calc_Used_Bits(DeviceInfo.wBlockDataSize);
#if CMD_DMA
totalUsedBanks = 4;
valid_banks[0] = 1;
valid_banks[1] = 1;
valid_banks[2] = 1;
valid_banks[3] = 1;
#endif
return PASS;
}
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
* Function: mtd_Flash_Reset
* Inputs: none
* Outputs: PASS=0 (notice 0=ok here)
* Description: Reset the flash
*
*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
u16 mtd_Flash_Reset(void)
{
nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
__FILE__, __LINE__, __func__);
return PASS;
}
void erase_callback(struct erase_info *e)
{
complete((void *)e->priv);
}
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
* Function: mtd_Erase_Block
* Inputs: Address
* Outputs: PASS=0 (notice 0=ok here)
* Description: Erase a block
*
*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
u16 mtd_Erase_Block(u32 block_add)
{
struct erase_info erase;
DECLARE_COMPLETION_ONSTACK(comp);
int ret;
nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
__FILE__, __LINE__, __func__);
if (block_add >= DeviceInfo.wTotalBlocks) {
printk(KERN_ERR "mtd_Erase_Block error! "
"Too big block address: %d\n", block_add);
return FAIL;
}
nand_dbg_print(NAND_DBG_DEBUG, "Erasing block %d\n",
(int)block_add);
erase.mtd = spectra_mtd;
erase.callback = erase_callback;
erase.addr = block_add * spectra_mtd->erasesize;
erase.len = spectra_mtd->erasesize;
erase.priv = (unsigned long)&comp;
ret = spectra_mtd->erase(spectra_mtd, &erase);
if (!ret) {
wait_for_completion(&comp);
if (erase.state != MTD_ERASE_DONE)
ret = -EIO;
}
if (ret) {
printk(KERN_WARNING "mtd_Erase_Block error! "
"erase of region [0x%llx, 0x%llx] failed\n",
erase.addr, erase.len);
return FAIL;
}
return PASS;
}
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
* Function: mtd_Write_Page_Main
* Inputs: Write buffer address pointer
* Block number
* Page number
* Number of pages to process
* Outputs: PASS=0 (notice 0=ok here)
* Description: Write the data in the buffer to main area of flash
*
*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
u16 mtd_Write_Page_Main(u8 *write_data, u32 Block,
u16 Page, u16 PageCount)
{
size_t retlen;
int ret = 0;
if (Block >= DeviceInfo.wTotalBlocks)
return FAIL;
if (Page + PageCount > DeviceInfo.wPagesPerBlock)
return FAIL;
nand_dbg_print(NAND_DBG_DEBUG, "mtd_Write_Page_Main: "
"lba %u Page %u PageCount %u\n",
(unsigned int)Block,
(unsigned int)Page, (unsigned int)PageCount);
while (PageCount) {
ret = spectra_mtd->write(spectra_mtd,
(Block * spectra_mtd->erasesize) + (Page * spectra_mtd->writesize),
DeviceInfo.wPageDataSize, &retlen, write_data);
if (ret) {
printk(KERN_ERR "%s failed %d\n", __func__, ret);
return FAIL;
}
write_data += DeviceInfo.wPageDataSize;
Page++;
PageCount--;
}
nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
__FILE__, __LINE__, __func__);
return PASS;
}
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
* Function: mtd_Read_Page_Main
* Inputs: Read buffer address pointer
* Block number
* Page number
* Number of pages to process
* Outputs: PASS=0 (notice 0=ok here)
* Description: Read the data from the flash main area to the buffer
*
*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
u16 mtd_Read_Page_Main(u8 *read_data, u32 Block,
u16 Page, u16 PageCount)
{
size_t retlen;
int ret = 0;
nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
__FILE__, __LINE__, __func__);
if (Block >= DeviceInfo.wTotalBlocks)
return FAIL;
if (Page + PageCount > DeviceInfo.wPagesPerBlock)
return FAIL;
nand_dbg_print(NAND_DBG_DEBUG, "mtd_Read_Page_Main: "
"lba %u Page %u PageCount %u\n",
(unsigned int)Block,
(unsigned int)Page, (unsigned int)PageCount);
while (PageCount) {
ret = spectra_mtd->read(spectra_mtd,
(Block * spectra_mtd->erasesize) + (Page * spectra_mtd->writesize),
DeviceInfo.wPageDataSize, &retlen, read_data);
if (ret) {
printk(KERN_ERR "%s failed %d\n", __func__, ret);
return FAIL;
}
read_data += DeviceInfo.wPageDataSize;
Page++;
PageCount--;
}
nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
__FILE__, __LINE__, __func__);
return PASS;
}
#ifndef ELDORA
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
* Function: mtd_Read_Page_Main_Spare
* Inputs: Write Buffer
* Address
* Buffer size
* Outputs: PASS=0 (notice 0=ok here)
* Description: Read from flash main+spare area
*
*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
u16 mtd_Read_Page_Main_Spare(u8 *read_data, u32 Block,
u16 Page, u16 PageCount)
{
nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
__FILE__, __LINE__, __func__);
if (Block >= DeviceInfo.wTotalBlocks) {
printk(KERN_ERR "Read Page Main+Spare "
"Error: Block Address too big\n");
return FAIL;
}
if (Page + PageCount > DeviceInfo.wPagesPerBlock) {
printk(KERN_ERR "Read Page Main+Spare "
"Error: Page number %d+%d too big in block %d\n",
Page, PageCount, Block);
return FAIL;
}
nand_dbg_print(NAND_DBG_DEBUG, "Read Page Main + Spare - "
"No. of pages %u block %u start page %u\n",
(unsigned int)PageCount,
(unsigned int)Block, (unsigned int)Page);
while (PageCount) {
struct mtd_oob_ops ops;
int ret;
ops.mode = MTD_OOB_AUTO;
ops.datbuf = read_data;
ops.len = DeviceInfo.wPageDataSize;
ops.oobbuf = read_data + DeviceInfo.wPageDataSize + BTSIG_OFFSET;
ops.ooblen = BTSIG_BYTES;
ops.ooboffs = 0;
ret = spectra_mtd->read_oob(spectra_mtd,
(Block * spectra_mtd->erasesize) + (Page * spectra_mtd->writesize),
&ops);
if (ret) {
printk(KERN_ERR "%s failed %d\n", __func__, ret);
return FAIL;
}
read_data += DeviceInfo.wPageSize;
Page++;
PageCount--;
}
return PASS;
}
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
* Function: mtd_Write_Page_Main_Spare
* Inputs: Write buffer
* address
* buffer length
* Outputs: PASS=0 (notice 0=ok here)
* Description: Write the buffer to main+spare area of flash
*
*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
u16 mtd_Write_Page_Main_Spare(u8 *write_data, u32 Block,
u16 Page, u16 page_count)
{
nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
__FILE__, __LINE__, __func__);
if (Block >= DeviceInfo.wTotalBlocks) {
printk(KERN_ERR "Write Page Main + Spare "
"Error: Block Address too big\n");
return FAIL;
}
if (Page + page_count > DeviceInfo.wPagesPerBlock) {
printk(KERN_ERR "Write Page Main + Spare "
"Error: Page number %d+%d too big in block %d\n",
Page, page_count, Block);
WARN_ON(1);
return FAIL;
}
nand_dbg_print(NAND_DBG_DEBUG, "Write Page Main+Spare - "
"No. of pages %u block %u start page %u\n",
(unsigned int)page_count,
(unsigned int)Block, (unsigned int)Page);
while (page_count) {
struct mtd_oob_ops ops;
int ret;
ops.mode = MTD_OOB_AUTO;
ops.datbuf = write_data;
ops.len = DeviceInfo.wPageDataSize;
ops.oobbuf = write_data + DeviceInfo.wPageDataSize + BTSIG_OFFSET;
ops.ooblen = BTSIG_BYTES;
ops.ooboffs = 0;
ret = spectra_mtd->write_oob(spectra_mtd,
(Block * spectra_mtd->erasesize) + (Page * spectra_mtd->writesize),
&ops);
if (ret) {
printk(KERN_ERR "%s failed %d\n", __func__, ret);
return FAIL;
}
write_data += DeviceInfo.wPageSize;
Page++;
page_count--;
}
return PASS;
}
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
* Function: mtd_Write_Page_Spare
* Inputs: Write buffer
* Address
* buffer size
* Outputs: PASS=0 (notice 0=ok here)
* Description: Write the buffer in the spare area
*
*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
u16 mtd_Write_Page_Spare(u8 *write_data, u32 Block,
u16 Page, u16 PageCount)
{
WARN_ON(1);
return FAIL;
}
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
* Function: mtd_Read_Page_Spare
* Inputs: Write Buffer
* Address
* Buffer size
* Outputs: PASS=0 (notice 0=ok here)
* Description: Read data from the spare area
*
*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
u16 mtd_Read_Page_Spare(u8 *read_data, u32 Block,
u16 Page, u16 PageCount)
{
nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
__FILE__, __LINE__, __func__);
if (Block >= DeviceInfo.wTotalBlocks) {
printk(KERN_ERR "Read Page Spare "
"Error: Block Address too big\n");
return FAIL;
}
if (Page + PageCount > DeviceInfo.wPagesPerBlock) {
printk(KERN_ERR "Read Page Spare "
"Error: Page number too big\n");
return FAIL;
}
nand_dbg_print(NAND_DBG_DEBUG, "Read Page Spare- "
"block %u page %u (%u pages)\n",
(unsigned int)Block, (unsigned int)Page, PageCount);
while (PageCount) {
struct mtd_oob_ops ops;
int ret;
ops.mode = MTD_OOB_AUTO;
ops.datbuf = NULL;
ops.len = 0;
ops.oobbuf = read_data;
ops.ooblen = BTSIG_BYTES;
ops.ooboffs = 0;
ret = spectra_mtd->read_oob(spectra_mtd,
(Block * spectra_mtd->erasesize) + (Page * spectra_mtd->writesize),
&ops);
if (ret) {
printk(KERN_ERR "%s failed %d\n", __func__, ret);
return FAIL;
}
read_data += DeviceInfo.wPageSize;
Page++;
PageCount--;
}
return PASS;
}
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
* Function: mtd_Enable_Disable_Interrupts
* Inputs: enable or disable
* Outputs: none
* Description: NOP
*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
void mtd_Enable_Disable_Interrupts(u16 INT_ENABLE)
{
nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
__FILE__, __LINE__, __func__);
}
u16 mtd_Get_Bad_Block(u32 block)
{
return 0;
}
#if CMD_DMA
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
* Support for CDMA functions
************************************
* mtd_CDMA_Flash_Init
* CDMA_process_data command (use LLD_CDMA)
* CDMA_MemCopy_CMD (use LLD_CDMA)
* mtd_CDMA_execute all commands
* mtd_CDMA_Event_Status
*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
u16 mtd_CDMA_Flash_Init(void)
{
u16 i;
nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
__FILE__, __LINE__, __func__);
for (i = 0; i < MAX_DESCS + MAX_CHANS; i++) {
PendingCMD[i].CMD = 0;
PendingCMD[i].Tag = 0;
PendingCMD[i].DataAddr = 0;
PendingCMD[i].Block = 0;
PendingCMD[i].Page = 0;
PendingCMD[i].PageCount = 0;
PendingCMD[i].DataDestAddr = 0;
PendingCMD[i].DataSrcAddr = 0;
PendingCMD[i].MemCopyByteCnt = 0;
PendingCMD[i].ChanSync[0] = 0;
PendingCMD[i].ChanSync[1] = 0;
PendingCMD[i].ChanSync[2] = 0;
PendingCMD[i].ChanSync[3] = 0;
PendingCMD[i].ChanSync[4] = 0;
PendingCMD[i].Status = 3;
}
return PASS;
}
static void mtd_isr(int irq, void *dev_id)
{
/* TODO: ... */
}
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
* Function: CDMA_Execute_CMDs
* Inputs: tag_count: the number of pending cmds to do
* Outputs: PASS/FAIL
* Description: execute each command in the pending CMD array
*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
u16 mtd_CDMA_Execute_CMDs(u16 tag_count)
{
u16 i, j;
u8 CMD; /* cmd parameter */
u8 *data;
u32 block;
u16 page;
u16 count;
u16 status = PASS;
nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
__FILE__, __LINE__, __func__);
nand_dbg_print(NAND_DBG_TRACE, "At start of Execute CMDs: "
"Tag Count %u\n", tag_count);
for (i = 0; i < totalUsedBanks; i++) {
PendingCMD[i].CMD = DUMMY_CMD;
PendingCMD[i].Tag = 0xFF;
PendingCMD[i].Block =
(DeviceInfo.wTotalBlocks / totalUsedBanks) * i;
for (j = 0; j <= MAX_CHANS; j++)
PendingCMD[i].ChanSync[j] = 0;
}
CDMA_Execute_CMDs(tag_count);
#ifdef VERBOSE
print_pending_cmds(tag_count);
#endif
#if DEBUG_SYNC
}
debug_sync_cnt++;
#endif
for (i = MAX_CHANS;
i < tag_count + MAX_CHANS; i++) {
CMD = PendingCMD[i].CMD;
data = PendingCMD[i].DataAddr;
block = PendingCMD[i].Block;
page = PendingCMD[i].Page;
count = PendingCMD[i].PageCount;
switch (CMD) {
case ERASE_CMD:
mtd_Erase_Block(block);
PendingCMD[i].Status = PASS;
break;
case WRITE_MAIN_CMD:
mtd_Write_Page_Main(data, block, page, count);
PendingCMD[i].Status = PASS;
break;
case WRITE_MAIN_SPARE_CMD:
mtd_Write_Page_Main_Spare(data, block, page, count);
PendingCMD[i].Status = PASS;
break;
case READ_MAIN_CMD:
mtd_Read_Page_Main(data, block, page, count);
PendingCMD[i].Status = PASS;
break;
case MEMCOPY_CMD:
memcpy(PendingCMD[i].DataDestAddr,
PendingCMD[i].DataSrcAddr,
PendingCMD[i].MemCopyByteCnt);
case DUMMY_CMD:
PendingCMD[i].Status = PASS;
break;
default:
PendingCMD[i].Status = FAIL;
break;
}
}
/*
* Temperory adding code to reset PendingCMD array for basic testing.
* It should be done at the end of event status function.
*/
for (i = tag_count + MAX_CHANS; i < MAX_DESCS; i++) {
PendingCMD[i].CMD = 0;
PendingCMD[i].Tag = 0;
PendingCMD[i].DataAddr = 0;
PendingCMD[i].Block = 0;
PendingCMD[i].Page = 0;
PendingCMD[i].PageCount = 0;
PendingCMD[i].DataDestAddr = 0;
PendingCMD[i].DataSrcAddr = 0;
PendingCMD[i].MemCopyByteCnt = 0;
PendingCMD[i].ChanSync[0] = 0;
PendingCMD[i].ChanSync[1] = 0;
PendingCMD[i].ChanSync[2] = 0;
PendingCMD[i].ChanSync[3] = 0;
PendingCMD[i].ChanSync[4] = 0;
PendingCMD[i].Status = CMD_NOT_DONE;
}
nand_dbg_print(NAND_DBG_TRACE, "At end of Execute CMDs.\n");
mtd_isr(0, 0); /* This is a null isr now. Need fill it in future */
return status;
}
/*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
* Function: mtd_Event_Status
* Inputs: none
* Outputs: Event_Status code
* Description: This function can also be used to force errors
*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/
u16 mtd_CDMA_Event_Status(void)
{
nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n",
__FILE__, __LINE__, __func__);
return EVENT_PASS;
}
#endif /* CMD_DMA */
#endif /* !ELDORA */

51
drivers/block/spectra/lld_mtd.h Normal file
View File

@@ -0,0 +1,51 @@
/*
* NAND Flash Controller Device Driver
* Copyright (c) 2009, Intel Corporation and its suppliers.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#ifndef _LLD_MTD_
#define _LLD_MTD_
#include "ffsport.h"
#include "ffsdefs.h"
/* prototypes: MTD API functions */
extern u16 mtd_Flash_Reset(void);
extern u16 mtd_Flash_Init(void);
extern int mtd_Flash_Release(void);
extern u16 mtd_Read_Device_ID(void);
extern u16 mtd_Erase_Block(u32 block_addr);
extern u16 mtd_Write_Page_Main(u8 *write_data, u32 Block,
u16 Page, u16 PageCount);
extern u16 mtd_Read_Page_Main(u8 *read_data, u32 Block, u16 Page,
u16 PageCount);
extern u16 mtd_Event_Status(void);
extern void mtd_Enable_Disable_Interrupts(u16 INT_ENABLE);
extern u16 mtd_Write_Page_Main_Spare(u8 *write_data, u32 Block,
u16 Page, u16 PageCount);
extern u16 mtd_Write_Page_Spare(u8 *write_data, u32 Block,
u16 Page, u16 PageCount);
extern u16 mtd_Read_Page_Main_Spare(u8 *read_data, u32 Block,
u16 Page, u16 PageCount);
extern u16 mtd_Read_Page_Spare(u8 *read_data, u32 Block, u16 Page,
u16 PageCount);
extern u16 mtd_Get_Bad_Block(u32 block);
u16 mtd_CDMA_Flash_Init(void);
u16 mtd_CDMA_Execute_CMDs(u16 tag_count);
u16 mtd_CDMA_Event_Status(void);
#endif /*_LLD_MTD_*/

1
drivers/block/spectra/spectraswconfig.h
View File

@@ -47,6 +47,7 @@
/***** Product Feature Support *****/
#define FLASH_EMU defined(CONFIG_MRST_NAND_EMU)
#define FLASH_NAND defined(CONFIG_MRST_NAND_HW)
#define FLASH_MTD defined(CONFIG_MRST_NAND_MTD)
#define CMD_DMA defined(CONFIG_MRST_NAND_HW_DMA)
#define SPECTRA_PARTITION_ID 0