diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/basler/excite/excite_flashtest.c | 294 |
1 files changed, 0 insertions, 294 deletions
diff --git a/arch/mips/basler/excite/excite_flashtest.c b/arch/mips/basler/excite/excite_flashtest.c deleted file mode 100644 index f0024a8e329..00000000000 --- a/arch/mips/basler/excite/excite_flashtest.c +++ /dev/null @@ -1,294 +0,0 @@ -/* -* Copyright (C) 2005 by Basler Vision Technologies AG -* Author: Thies Moeller <thies.moeller@baslerweb.com> -* -* This program is free software; you can redistribute it and/or modify -* it under the terms of the GNU General Public License as published by -* the Free Software Foundation; either version 2 of the License, or -* (at your option) any later version. -* -* This program is distributed in the hope that 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -*/ - -#include <linux/module.h> -#include <linux/types.h> -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/ioport.h> -#include <linux/device.h> -#include <linux/delay.h> -#include <linux/err.h> -#include <linux/kernel.h> - -#include <excite.h> - -#include <asm/io.h> - -#include <linux/mtd/mtd.h> -#include <linux/mtd/nand.h> -#include <linux/mtd/nand_ecc.h> -#include <linux/mtd/partitions.h> -#include <asm/rm9k-ocd.h> // for ocd_write -#include <linux/workqueue.h> // for queue - -#include "excite_nandflash.h" -#include "nandflash.h" - -#define PFX "excite flashtest: " -typedef void __iomem *io_reg_t; - -#define io_readb(__a__) __raw_readb((__a__)) -#define io_writeb(__v__, __a__) __raw_writeb((__v__), (__a__)) - - - -static inline const struct resource *excite_nandflash_get_resource( - struct platform_device *d, unsigned long flags, const char *basename) -{ - const char fmt[] = "%s_%u"; - char buf[80]; - - if (unlikely(snprintf(buf, sizeof buf, fmt, basename, d->id) >= sizeof buf)) - return NULL; - - return platform_get_resource_byname(d, flags, buf); -} - -static inline io_reg_t -excite_nandflash_map_regs(struct platform_device *d, const char *basename) -{ - void *result = NULL; - const struct resource *const r = - excite_nandflash_get_resource(d, IORESOURCE_MEM, basename); - if (r) - result = ioremap_nocache(r->start, r->end + 1 - r->start); - return result; -} - -/* controller and mtd information */ - -struct excite_nandflash_drvdata { - struct mtd_info board_mtd; - struct nand_chip board_chip; - io_reg_t regs; -}; - - -/* command and control functions */ -static void excite_nandflash_hwcontrol(struct mtd_info *mtd, int cmd) -{ - struct nand_chip *this = mtd->priv; - io_reg_t regs = container_of(mtd,struct excite_nandflash_drvdata,board_mtd)->regs; - - switch (cmd) { - /* Select the command latch */ - case NAND_CTL_SETCLE: this->IO_ADDR_W = regs + EXCITE_NANDFLASH_CMD; - break; - /* Deselect the command latch */ - case NAND_CTL_CLRCLE: this->IO_ADDR_W = regs + EXCITE_NANDFLASH_DATA; - break; - /* Select the address latch */ - case NAND_CTL_SETALE: this->IO_ADDR_W = regs + EXCITE_NANDFLASH_ADDR; - break; - /* Deselect the address latch */ - case NAND_CTL_CLRALE: this->IO_ADDR_W = regs + EXCITE_NANDFLASH_DATA; - break; - /* Select the chip -- not used */ - case NAND_CTL_SETNCE: - break; - /* Deselect the chip -- not used */ - case NAND_CTL_CLRNCE: - break; - } - - this->IO_ADDR_R = this->IO_ADDR_W; -} - -/* excite_nandflash_devready() - * - * returns 0 if the nand is busy, 1 if it is ready - */ -static int excite_nandflash_devready(struct mtd_info *mtd) -{ - struct excite_nandflash_drvdata *drvdata = - container_of(mtd, struct excite_nandflash_drvdata, board_mtd); - - return io_readb(drvdata->regs + EXCITE_NANDFLASH_STATUS); -} - -/* device management functions */ - -/* excite_nandflash_remove - * - * called by device layer to remove the driver - * the binding to the mtd and all allocated - * resources are released - */ -static int excite_nandflash_remove(struct device *dev) -{ - struct excite_nandflash_drvdata *this = dev_get_drvdata(dev); - - pr_info(PFX "remove"); - - dev_set_drvdata(dev, NULL); - - if (this == NULL) { - pr_debug(PFX "call remove without private data!!"); - return 0; - } - - - /* free the common resources */ - if (this->regs != NULL) { - iounmap(this->regs); - this->regs = NULL; - } - - kfree(this); - - return 0; -} - -static int elapsed; - -void my_workqueue_handler(void *arg) -{ - elapsed = 1; -} - -DECLARE_WORK(sigElapsed, my_workqueue_handler, 0); - - -/* excite_nandflash_probe - * - * called by device layer when it finds a device matching - * one our driver can handled. This code checks to see if - * it can allocate all necessary resources then calls the - * nand layer to look for devices -*/ -static int excite_nandflash_probe(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - - struct excite_nandflash_drvdata *drvdata; /* private driver data */ - struct nand_chip *board_chip; /* private flash chip data */ - struct mtd_info *board_mtd; /* mtd info for this board */ - - int err = 0; - int count = 0; - struct timeval tv,endtv; - unsigned int dt; - - pr_info(PFX "probe dev: (%p)\n", dev); - - pr_info(PFX "adjust LB timing\n"); - ocd_writel(0x00000330, LDP2); - - drvdata = kmalloc(sizeof(*drvdata), GFP_KERNEL); - if (unlikely(!drvdata)) { - printk(KERN_ERR PFX "no memory for drvdata\n"); - err = -ENOMEM; - goto mem_error; - } - - /* Initialize structures */ - memset(drvdata, 0, sizeof(*drvdata)); - - /* bind private data into driver */ - dev_set_drvdata(dev, drvdata); - - /* allocate and map the resource */ - drvdata->regs = - excite_nandflash_map_regs(pdev, EXCITE_NANDFLASH_RESOURCE_REGS); - - if (unlikely(!drvdata->regs)) { - printk(KERN_ERR PFX "cannot reserve register region\n"); - err = -ENXIO; - goto io_error; - } - - /* initialise our chip */ - board_chip = &drvdata->board_chip; - - board_chip->IO_ADDR_R = drvdata->regs + EXCITE_NANDFLASH_DATA; - board_chip->IO_ADDR_W = drvdata->regs + EXCITE_NANDFLASH_DATA; - - board_chip->hwcontrol = excite_nandflash_hwcontrol; - board_chip->dev_ready = excite_nandflash_devready; - - board_chip->chip_delay = 25; - #if 0 - /* TODO: speedup the initial scan */ - board_chip->options = NAND_USE_FLASH_BBT; - #endif - board_chip->eccmode = NAND_ECC_SOFT; - - /* link chip to mtd */ - board_mtd = &drvdata->board_mtd; - board_mtd->priv = board_chip; - - - pr_info(PFX "FlashTest\n"); - elapsed = 0; -/* schedule_delayed_work(&sigElapsed, 1*HZ); - while (!elapsed) { - io_readb(drvdata->regs + EXCITE_NANDFLASH_STATUS); - count++; - } - pr_info(PFX "reads in 1 sec --> %d\n",count); -*/ - do_gettimeofday(&tv); - for (count = 0 ; count < 1000000; count ++) { - io_readb(drvdata->regs + EXCITE_NANDFLASH_STATUS); - } - do_gettimeofday(&endtv); - dt = (endtv.tv_sec - tv.tv_sec) * 1000000 + endtv.tv_usec - tv.tv_usec; - pr_info(PFX "%8d us timeval\n",dt); - pr_info(PFX "EndFlashTest\n"); - -/* return with error to unload everything -*/ -io_error: - iounmap(drvdata->regs); - -mem_error: - kfree(drvdata); - - if (err == 0) - err = -EINVAL; - return err; -} - -static struct device_driver excite_nandflash_driver = { - .name = "excite_nand", - .bus = &platform_bus_type, - .probe = excite_nandflash_probe, - .remove = excite_nandflash_remove, -}; - -static int __init excite_nandflash_init(void) -{ - pr_info(PFX "register Driver (Rev: $Revision:$)\n"); - return driver_register(&excite_nandflash_driver); -} - -static void __exit excite_nandflash_exit(void) -{ - driver_unregister(&excite_nandflash_driver); - pr_info(PFX "Driver unregistered"); -} - -module_init(excite_nandflash_init); -module_exit(excite_nandflash_exit); - -MODULE_AUTHOR("Thies Moeller <thies.moeller@baslerweb.com>"); -MODULE_DESCRIPTION("Basler eXcite NAND-Flash driver"); -MODULE_LICENSE("GPL"); |