X-Git-Url: http://git.rohieb.name/openwrt.git/blobdiff_plain/a7f49cd3e861f1c192081a543a711fde8d7c1f08..3bedd206ff99279034442b09b5d1fb00f1cc6cb0:/target/linux/adm5120/files/drivers/ata/pata_rb153_cf.c diff --git a/target/linux/adm5120/files/drivers/ata/pata_rb153_cf.c b/target/linux/adm5120/files/drivers/ata/pata_rb153_cf.c index 16ec6762f..ef7f5835a 100644 --- a/target/linux/adm5120/files/drivers/ata/pata_rb153_cf.c +++ b/target/linux/adm5120/files/drivers/ata/pata_rb153_cf.c @@ -2,7 +2,7 @@ * A low-level PATA driver to handle a Compact Flash connected on the * Mikrotik's RouterBoard 153 board. * - * Copyright (C) 2007 Gabor Juhos + * Copyright (C) 2007-2008 Gabor Juhos * * This file was based on: drivers/ata/pata_ixp4xx_cf.c * Copyright (C) 2006-07 Tower Technologies @@ -12,27 +12,25 @@ * 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. + * 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 #include -#include - #include #include #include +#include +#include #include #include -#include - #define DRV_NAME "pata-rb153-cf" -#define DRV_VERSION "0.1" +#define DRV_VERSION "0.5.0" #define DRV_DESC "PATA driver for RouterBOARD 153 Compact Flash" #define RB153_CF_MAXPORTS 1 @@ -45,50 +43,62 @@ struct rb153_cf_info { void __iomem *iobase; unsigned int gpio_line; - int error; + int frozen; + unsigned int irq; }; -/* ------------------------------------------------------------------------ */ - static inline void rb153_pata_finish_io(struct ata_port *ap) { - struct ata_host *ah = ap->host; + struct rb153_cf_info *info = ap->host->private_data; - ata_altstatus(ap); + /* FIXME: Keep previous delay. If this is merely a fence then + * ata_sff_sync might be sufficient. */ + ata_sff_dma_pause(ap); ndelay(RB153_CF_IO_DELAY); - set_irq_type(ah->irq, IRQ_TYPE_LEVEL_HIGH); + set_irq_type(info->irq, IRQ_TYPE_LEVEL_HIGH); } static void rb153_pata_exec_command(struct ata_port *ap, - const struct ata_taskfile *tf) + const struct ata_taskfile *tf) { writeb(tf->command, ap->ioaddr.command_addr); rb153_pata_finish_io(ap); } -static void rb153_pata_data_xfer(struct ata_device *adev, unsigned char *buf, - unsigned int buflen, int write_data) +static unsigned int rb153_pata_data_xfer(struct ata_device *adev, + unsigned char *buf, + unsigned int buflen, + int write_data) { - struct ata_port *ap = adev->ap; - unsigned int i; + void __iomem *ioaddr = adev->link->ap->ioaddr.data_addr; + unsigned int t; + t = buflen; if (write_data) { - for (i = 0; i < buflen; i++) - writeb(buf[i], ap->ioaddr.data_addr); + for (; t > 0; t--, buf++) + writeb(*buf, ioaddr); } else { - for (; buflen > 0; buflen--) - buf[i] = readb(ap->ioaddr.data_addr); + for (; t > 0; t--, buf++) + *buf = readb(ioaddr); } - rb153_pata_finish_io(ap); + 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->error = 0; + info->frozen = 0; } static irqreturn_t rb153_pata_irq_handler(int irq, void *dev_instance) @@ -97,92 +107,46 @@ static irqreturn_t rb153_pata_irq_handler(int irq, void *dev_instance) struct rb153_cf_info *info = ah->private_data; if (gpio_get_value(info->gpio_line)) { - set_irq_type(ah->irq, IRQ_TYPE_LEVEL_LOW); - if (!info->error) - ata_interrupt(irq, dev_instance); + set_irq_type(info->irq, IRQ_TYPE_LEVEL_LOW); + if (!info->frozen) + ata_sff_interrupt(irq, dev_instance); } else { - set_irq_type(ah->irq, IRQ_TYPE_LEVEL_HIGH); + 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 = { - .port_disable = ata_port_disable, - - .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, - + .inherits = &ata_sff_port_ops, + .sff_exec_command = rb153_pata_exec_command, + .sff_data_xfer = rb153_pata_data_xfer, + .freeze = rb153_pata_freeze, .thaw = rb153_pata_thaw, - .error_handler = ata_bmdma_error_handler, - - .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, + ATA_PIO_SHT(DRV_NAME), }; -/* ------------------------------------------------------------------------ */ - -static void rb153_pata_setup_ports(struct ata_host *ah) +static void rb153_pata_setup_port(struct ata_host *ah) { struct rb153_cf_info *info = ah->private_data; struct ata_port *ap; - struct ata_ioports *iop; ap = ah->ports[0]; - iop = &ap->ioaddr; ap->ops = &rb153_pata_port_ops; ap->pio_mask = 0x1f; /* PIO4 */ - ap->flags |= ATA_FLAG_MMIO | ATA_FLAG_NO_LEGACY; + ap->flags = ATA_FLAG_NO_LEGACY | ATA_FLAG_MMIO; + + 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; - iop->cmd_addr = info->iobase + RB153_CF_REG_CMD; - iop->ctl_addr = info->iobase + RB153_CF_REG_CTRL; - iop->altstatus_addr = info->iobase + RB153_CF_REG_CTRL; - iop->data_addr = info->iobase + RB153_CF_REG_DATA; + ata_sff_std_ports(&ap->ioaddr); - ata_std_ports(iop); + ap->ioaddr.data_addr = info->iobase + RB153_CF_REG_DATA; } static __devinit int rb153_pata_driver_probe(struct platform_device *pdev) @@ -218,7 +182,6 @@ static __devinit int rb153_pata_driver_probe(struct platform_device *pdev) return ret; } - /* allocate host */ ah = ata_host_alloc(&pdev->dev, RB153_CF_MAXPORTS); if (!ah) return -ENOMEM; @@ -230,6 +193,8 @@ static __devinit int rb153_pata_driver_probe(struct platform_device *pdev) 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); @@ -243,10 +208,10 @@ static __devinit int rb153_pata_driver_probe(struct platform_device *pdev) goto err_free_gpio; } - rb153_pata_setup_ports(ah); + rb153_pata_setup_port(ah); - ret = ata_host_activate(ah, irq, ata_interrupt, IRQF_TRIGGER_HIGH, - &rb153_pata_sht); + ret = ata_host_activate(ah, irq, rb153_pata_irq_handler, + IRQF_TRIGGER_LOW, &rb153_pata_sht); if (ret) goto err_free_gpio; @@ -294,10 +259,10 @@ static void __exit rb153_pata_module_exit(void) platform_driver_unregister(&rb153_pata_platform_driver); } -MODULE_AUTHOR("Gabor Juhos "); +MODULE_AUTHOR("Gabor Juhos "); MODULE_DESCRIPTION(DRV_DESC); MODULE_VERSION(DRV_VERSION); -MODULE_LICENSE("GPL"); +MODULE_LICENSE("GPL v2"); module_init(rb153_pata_module_init); module_exit(rb153_pata_module_exit);