diff options
Diffstat (limited to 'target/linux/adm5120/files/drivers/ata/pata_rb153_cf.c')
| -rw-r--r-- | target/linux/adm5120/files/drivers/ata/pata_rb153_cf.c | 316 |
1 files changed, 0 insertions, 316 deletions
diff --git a/target/linux/adm5120/files/drivers/ata/pata_rb153_cf.c b/target/linux/adm5120/files/drivers/ata/pata_rb153_cf.c deleted file mode 100644 index 8c0a0a36cc..0000000000 --- a/target/linux/adm5120/files/drivers/ata/pata_rb153_cf.c +++ /dev/null @@ -1,316 +0,0 @@ -/* - * A low-level PATA driver to handle a Compact Flash connected on the - * Mikrotik's RouterBoard 153 board. - * - * Copyright (C) 2007,2008 Gabor Juhos <juhosg at openwrt.org> - * - * This file was based on: drivers/ata/pata_ixp4xx_cf.c - * Copyright (C) 2006-07 Tower Technologies - * Author: Alessandro Zummo <a.zummo@towertech.it> - * - * Also was based on the driver for Linux 2.4.xx published by Mikrotik for - * their RouterBoard 1xx and 5xx series devices. The original Mikrotik code - * seems not to have a license. - * - * 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. - * - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/platform_device.h> - -#include <linux/io.h> -#include <linux/interrupt.h> -#include <linux/irq.h> - -#include <linux/libata.h> -#include <scsi/scsi_host.h> - -#include <asm/gpio.h> - -#define DRV_NAME "pata-rb153-cf" -#define DRV_VERSION "0.4.0" -#define DRV_DESC "PATA driver for RouterBOARD 153 Compact Flash" - -#define RB153_CF_MAXPORTS 1 -#define RB153_CF_IO_DELAY 100 - -#define RB153_CF_REG_CMD 0x0800 -#define RB153_CF_REG_CTRL 0x080E -#define RB153_CF_REG_DATA 0x0C00 - -struct rb153_cf_info { - unsigned int irq; - void __iomem *iobase; - unsigned int gpio_line; - int frozen; -}; - -/* ------------------------------------------------------------------------ */ - -static inline void rb153_pata_finish_io(struct ata_port *ap) -{ - struct rb153_cf_info *info = ap->host->private_data; - - ata_altstatus(ap); - ndelay(RB153_CF_IO_DELAY); - - set_irq_type(info->irq, IRQ_TYPE_LEVEL_HIGH); -} - -static void rb153_pata_exec_command(struct ata_port *ap, - const struct ata_taskfile *tf) -{ - writeb(tf->command, ap->ioaddr.command_addr); - rb153_pata_finish_io(ap); -} - -static unsigned int rb153_pata_data_xfer(struct ata_device *adev, unsigned char *buf, - unsigned int buflen, int write_data) -{ - void __iomem *ioaddr = adev->link->ap->ioaddr.data_addr; - unsigned int t; - - t = buflen; - if (write_data) { - for (; t > 0; t--, buf++) - writeb(*buf, ioaddr); - } else { - for (; t > 0; t--, buf++) - *buf = readb(ioaddr); - } - - rb153_pata_finish_io(adev->link->ap); - return buflen; -} - -static void rb153_pata_freeze(struct ata_port *ap) -{ - struct rb153_cf_info *info = ap->host->private_data; - - info->frozen = 1; -} - -static void rb153_pata_thaw(struct ata_port *ap) -{ - struct rb153_cf_info *info = ap->host->private_data; - - info->frozen = 0; -} - -static irqreturn_t rb153_pata_irq_handler(int irq, void *dev_instance) -{ - struct ata_host *ah = dev_instance; - struct rb153_cf_info *info = ah->private_data; - - if (gpio_get_value(info->gpio_line)) { - set_irq_type(info->irq, IRQ_TYPE_LEVEL_LOW); - if (!info->frozen) - ata_interrupt(irq, dev_instance); - } else { - set_irq_type(info->irq, IRQ_TYPE_LEVEL_HIGH); - } - - return IRQ_HANDLED; -} - -static void rb153_pata_irq_clear(struct ata_port *ap) -{ -} - -static int rb153_pata_port_start(struct ata_port *ap) -{ - return 0; -} - -static struct ata_port_operations rb153_pata_port_ops = { - .tf_load = ata_tf_load, - .tf_read = ata_tf_read, - - .exec_command = rb153_pata_exec_command, - .check_status = ata_check_status, - .dev_select = ata_std_dev_select, - - .data_xfer = rb153_pata_data_xfer, - - .qc_prep = ata_qc_prep, - .qc_issue = ata_qc_issue_prot, - - .freeze = rb153_pata_freeze, - .thaw = rb153_pata_thaw, - .error_handler = ata_bmdma_error_handler, - .cable_detect = ata_cable_40wire, - - .irq_handler = rb153_pata_irq_handler, - .irq_clear = rb153_pata_irq_clear, - .irq_on = ata_irq_on, - - .port_start = rb153_pata_port_start, -}; - -/* ------------------------------------------------------------------------ */ - -static struct scsi_host_template rb153_pata_sht = { - .module = THIS_MODULE, - .name = DRV_NAME, - .ioctl = ata_scsi_ioctl, - .queuecommand = ata_scsi_queuecmd, - .slave_configure = ata_scsi_slave_config, - .slave_destroy = ata_scsi_slave_destroy, - .bios_param = ata_std_bios_param, - .proc_name = DRV_NAME, - - .can_queue = ATA_DEF_QUEUE, - .this_id = ATA_SHT_THIS_ID, - .sg_tablesize = LIBATA_MAX_PRD, - .dma_boundary = ATA_DMA_BOUNDARY, - .cmd_per_lun = ATA_SHT_CMD_PER_LUN, - .emulated = ATA_SHT_EMULATED, - .use_clustering = ATA_SHT_USE_CLUSTERING, -}; - -/* ------------------------------------------------------------------------ */ - -static void rb153_pata_setup_port(struct ata_port *ap, - struct rb153_cf_info *info, unsigned long raw_cmd) -{ - ap->ioaddr.cmd_addr = info->iobase + RB153_CF_REG_CMD; - ap->ioaddr.ctl_addr = info->iobase + RB153_CF_REG_CTRL; - ap->ioaddr.altstatus_addr = info->iobase + RB153_CF_REG_CTRL; - - ata_std_ports(&ap->ioaddr); - - ap->ioaddr.data_addr = info->iobase + RB153_CF_REG_DATA; - - ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", raw_cmd, - raw_cmd + RB153_CF_REG_CTRL); -} - -static __devinit int rb153_pata_driver_probe(struct platform_device *pdev) -{ - unsigned int irq; - int gpio; - struct resource *res; - struct ata_host *ah; - struct ata_port *ap; - struct rb153_cf_info *info; - int ret; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "no IOMEM resource found\n"); - return -EINVAL; - } - - irq = platform_get_irq(pdev, 0); - if (irq <= 0) { - dev_err(&pdev->dev, "no IRQ resource found\n"); - return -ENOENT; - } - - gpio = irq_to_gpio(irq); - if (gpio < 0) { - dev_err(&pdev->dev, "no GPIO found for irq%d\n", irq); - return -ENOENT; - } - - ret = gpio_request(gpio, DRV_NAME); - if (ret) { - dev_err(&pdev->dev, "GPIO request failed\n"); - return ret; - } - - /* allocate host */ - ah = ata_host_alloc(&pdev->dev, RB153_CF_MAXPORTS); - if (!ah) - return -ENOMEM; - - platform_set_drvdata(pdev, ah); - - info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL); - if (!info) - return -ENOMEM; - - ah->private_data = info; - info->gpio_line = gpio; - info->irq = irq; - - info->iobase = devm_ioremap_nocache(&pdev->dev, res->start, - res->end - res->start + 1); - if (!info->iobase) - return -ENOMEM; - - ret = gpio_direction_input(gpio); - if (ret) { - dev_err(&pdev->dev, "unable to set GPIO direction, err=%d\n", - ret); - goto err_free_gpio; - } - - ap = ah->ports[0]; - - ap->ops = &rb153_pata_port_ops; - ap->pio_mask = 0x1f; /* PIO4 */ - ap->flags = ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO; - - rb153_pata_setup_port(ap, info, res->start); - - ret = ata_host_activate(ah, irq, rb153_pata_irq_handler, - IRQF_TRIGGER_LOW, &rb153_pata_sht); - if (ret) - goto err_free_gpio; - - return 0; - -err_free_gpio: - gpio_free(gpio); - - return ret; -} - -static __devexit int rb153_pata_driver_remove(struct platform_device *pdev) -{ - struct ata_host *ah = platform_get_drvdata(pdev); - struct rb153_cf_info *info = ah->private_data; - - ata_host_detach(ah); - gpio_free(info->gpio_line); - - return 0; -} - -static struct platform_driver rb153_pata_platform_driver = { - .probe = rb153_pata_driver_probe, - .remove = __devexit_p(rb153_pata_driver_remove), - .driver = { - .name = DRV_NAME, - .owner = THIS_MODULE, - }, -}; - -/* ------------------------------------------------------------------------ */ - -#define DRV_INFO DRV_DESC " version " DRV_VERSION - -static int __init rb153_pata_module_init(void) -{ - printk(KERN_INFO DRV_INFO "\n"); - - return platform_driver_register(&rb153_pata_platform_driver); -} - -static void __exit rb153_pata_module_exit(void) -{ - platform_driver_unregister(&rb153_pata_platform_driver); -} - -MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org>"); -MODULE_DESCRIPTION(DRV_DESC); -MODULE_VERSION(DRV_VERSION); -MODULE_LICENSE("GPL v2"); - -module_init(rb153_pata_module_init); -module_exit(rb153_pata_module_exit); |