ide.h
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上传日期:2013-02-24
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- /*
- * linux/include/asm-arm/arch-pxa/ide.h
- *
- * Author: George Davis
- * Created: Jan 10, 2002
- * Copyright: MontaVista Software Inc.
- *
- * 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.
- *
- *
- * Originally based upon linux/include/asm-arm/arch-sa1100/ide.h
- *
- */
- #include <linux/config.h>
- #include <asm/irq.h>
- #include <asm/hardware.h>
- #include <asm/mach-types.h>
- /*
- * Set up a hw structure for a specified data port, control port and IRQ.
- * This should follow whatever the default interface uses.
- *
- * We fixup the IDE register offsets to use the non-overlapping locations
- * to facilitate successful implementation of the 16-bit I/O read fixups
- * required to work around erratum #86 for PXA250 rev B0 and earlier
- * since the IDE error reg can't be accessed from offset 1 by using
- * non-byte access.
- */
- static __inline__ void
- ide_init_hwif_ports(hw_regs_t *hw, int data_port, int ctrl_port, int *irq)
- {
- ide_ioreg_t reg;
- memset(hw, 0, sizeof(*hw));
- reg = (ide_ioreg_t)data_port;
- hw->io_ports[IDE_DATA_OFFSET] = reg + 8;
- hw->io_ports[IDE_ERROR_OFFSET] = reg + 13;
- hw->io_ports[IDE_NSECTOR_OFFSET] = reg + 2;
- hw->io_ports[IDE_SECTOR_OFFSET] = reg + 3;
- hw->io_ports[IDE_LCYL_OFFSET] = reg + 4;
- hw->io_ports[IDE_HCYL_OFFSET] = reg + 5;
- hw->io_ports[IDE_SELECT_OFFSET] = reg + 6;
- hw->io_ports[IDE_STATUS_OFFSET] = reg + 7;
- hw->io_ports[IDE_CONTROL_OFFSET] = (ide_ioreg_t) ctrl_port;
- if (irq)
- *irq = 0;
- }
- /*
- * Register the standard ports for this architecture with the IDE driver.
- */
- static __inline__ void
- ide_init_default_hwifs(void)
- {
- /* Nothing to declare... */
- }