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author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-21 20:57:23 +0200 |
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committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-10-21 20:57:23 +0200 |
commit | 2bfba3c444fe8b2ab1c38112a89d8f03b61136ca (patch) | |
tree | 17580eee63d868c9d6b97a6bc956a08f25631532 /drivers/ide/falconide.c | |
parent | 2515ddc6db8eb49a79f0fe5e67ff09ac7c81eab4 (diff) | |
download | kernel_samsung_tuna-2bfba3c444fe8b2ab1c38112a89d8f03b61136ca.zip kernel_samsung_tuna-2bfba3c444fe8b2ab1c38112a89d8f03b61136ca.tar.gz kernel_samsung_tuna-2bfba3c444fe8b2ab1c38112a89d8f03b61136ca.tar.bz2 |
ide: remove useless subdirs from drivers/ide/
Suggested-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/falconide.c')
-rw-r--r-- | drivers/ide/falconide.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/drivers/ide/falconide.c b/drivers/ide/falconide.c new file mode 100644 index 0000000..39d500d --- /dev/null +++ b/drivers/ide/falconide.c @@ -0,0 +1,153 @@ +/* + * Atari Falcon IDE Driver + * + * Created 12 Jul 1997 by Geert Uytterhoeven + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive for + * more details. + */ + +#include <linux/module.h> +#include <linux/types.h> +#include <linux/mm.h> +#include <linux/interrupt.h> +#include <linux/blkdev.h> +#include <linux/ide.h> +#include <linux/init.h> + +#include <asm/setup.h> +#include <asm/atarihw.h> +#include <asm/atariints.h> +#include <asm/atari_stdma.h> + +#define DRV_NAME "falconide" + + /* + * Base of the IDE interface + */ + +#define ATA_HD_BASE 0xfff00000 + + /* + * Offsets from the above base + */ + +#define ATA_HD_CONTROL 0x39 + + /* + * falconide_intr_lock is used to obtain access to the IDE interrupt, + * which is shared between several drivers. + */ + +int falconide_intr_lock; +EXPORT_SYMBOL(falconide_intr_lock); + +static void falconide_input_data(ide_drive_t *drive, struct request *rq, + void *buf, unsigned int len) +{ + unsigned long data_addr = drive->hwif->io_ports.data_addr; + + if (drive->media == ide_disk && rq && rq->cmd_type == REQ_TYPE_FS) + return insw(data_addr, buf, (len + 1) / 2); + + insw_swapw(data_addr, buf, (len + 1) / 2); +} + +static void falconide_output_data(ide_drive_t *drive, struct request *rq, + void *buf, unsigned int len) +{ + unsigned long data_addr = drive->hwif->io_ports.data_addr; + + if (drive->media == ide_disk && rq && rq->cmd_type == REQ_TYPE_FS) + return outsw(data_addr, buf, (len + 1) / 2); + + outsw_swapw(data_addr, buf, (len + 1) / 2); +} + +/* Atari has a byte-swapped IDE interface */ +static const struct ide_tp_ops falconide_tp_ops = { + .exec_command = ide_exec_command, + .read_status = ide_read_status, + .read_altstatus = ide_read_altstatus, + .read_sff_dma_status = ide_read_sff_dma_status, + + .set_irq = ide_set_irq, + + .tf_load = ide_tf_load, + .tf_read = ide_tf_read, + + .input_data = falconide_input_data, + .output_data = falconide_output_data, +}; + +static const struct ide_port_info falconide_port_info = { + .tp_ops = &falconide_tp_ops, + .host_flags = IDE_HFLAG_NO_DMA, +}; + +static void __init falconide_setup_ports(hw_regs_t *hw) +{ + int i; + + memset(hw, 0, sizeof(*hw)); + + hw->io_ports.data_addr = ATA_HD_BASE; + + for (i = 1; i < 8; i++) + hw->io_ports_array[i] = ATA_HD_BASE + 1 + i * 4; + + hw->io_ports.ctl_addr = ATA_HD_BASE + ATA_HD_CONTROL; + + hw->irq = IRQ_MFP_IDE; + hw->ack_intr = NULL; + + hw->chipset = ide_generic; +} + + /* + * Probe for a Falcon IDE interface + */ + +static int __init falconide_init(void) +{ + struct ide_host *host; + hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL }; + int rc; + + if (!MACH_IS_ATARI || !ATARIHW_PRESENT(IDE)) + return -ENODEV; + + printk(KERN_INFO "ide: Falcon IDE controller\n"); + + if (!request_mem_region(ATA_HD_BASE, 0x40, DRV_NAME)) { + printk(KERN_ERR "%s: resources busy\n", DRV_NAME); + return -EBUSY; + } + + falconide_setup_ports(&hw); + + host = ide_host_alloc(&falconide_port_info, hws); + if (host == NULL) { + rc = -ENOMEM; + goto err; + } + + ide_get_lock(NULL, NULL); + rc = ide_host_register(host, &falconide_port_info, hws); + ide_release_lock(); + + if (rc) + goto err_free; + + return 0; +err_free: + ide_host_free(host); +err: + release_mem_region(ATA_HD_BASE, 0x40); + return rc; +} + +module_init(falconide_init); + +MODULE_LICENSE("GPL"); |