4ee06b7e67
Remove stale ide.h "configuration options": * INITIAL_MULT_COUNT - always defined to 0 * SUPPORT_SLOW_DATA_PORTS - unused * OK_TO_RESET_CONTROLLER - always defined to 1 * DISABLE_IRQ_NOSYNC - always defined to 0 Leave SUPPORT_VLB_SYNC (defined to 0 for CRIS and FRV, otherwise to 1) for now but disallow overriding it by <asm/ide.h>. There should be no functionality changes caused by this patch. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
/*
|
|
* linux/include/asm-cris/ide.h
|
|
*
|
|
* Copyright (C) 2000, 2001, 2002 Axis Communications AB
|
|
*
|
|
* Authors: Bjorn Wesen
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* This file contains the ETRAX 100LX specific IDE code.
|
|
*/
|
|
|
|
#ifndef __ASMCRIS_IDE_H
|
|
#define __ASMCRIS_IDE_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
#include <asm/arch/svinto.h>
|
|
#include <asm/io.h>
|
|
#include <asm-generic/ide_iops.h>
|
|
|
|
|
|
/* ETRAX 100 can support 4 IDE busses on the same pins (serialized) */
|
|
|
|
#define MAX_HWIFS 4
|
|
|
|
static inline int ide_default_irq(unsigned long base)
|
|
{
|
|
/* all IDE busses share the same IRQ, number 4.
|
|
* this has the side-effect that ide-probe.c will cluster our 4 interfaces
|
|
* together in a hwgroup, and will serialize accesses. this is good, because
|
|
* we can't access more than one interface at the same time on ETRAX100.
|
|
*/
|
|
return 4;
|
|
}
|
|
|
|
static inline unsigned long ide_default_io_base(int index)
|
|
{
|
|
/* we have no real I/O base address per interface, since all go through the
|
|
* same register. but in a bitfield in that register, we have the i/f number.
|
|
* so we can use the io_base to remember that bitfield.
|
|
*/
|
|
static const unsigned long io_bases[MAX_HWIFS] = {
|
|
IO_FIELD(R_ATA_CTRL_DATA, sel, 0),
|
|
IO_FIELD(R_ATA_CTRL_DATA, sel, 1),
|
|
IO_FIELD(R_ATA_CTRL_DATA, sel, 2),
|
|
IO_FIELD(R_ATA_CTRL_DATA, sel, 3)
|
|
};
|
|
return io_bases[index];
|
|
}
|
|
|
|
/* this is called once for each interface, to setup the port addresses. data_port is the result
|
|
* of the ide_default_io_base call above. ctrl_port will be 0, but that is don't care for us.
|
|
*/
|
|
|
|
static inline void ide_init_hwif_ports(hw_regs_t *hw, unsigned long data_port, unsigned long ctrl_port, int *irq)
|
|
{
|
|
int i;
|
|
|
|
/* fill in ports for ATA addresses 0 to 7 */
|
|
|
|
for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {
|
|
hw->io_ports[i] = data_port |
|
|
IO_FIELD(R_ATA_CTRL_DATA, addr, i) |
|
|
IO_STATE(R_ATA_CTRL_DATA, cs0, active);
|
|
}
|
|
|
|
/* the IDE control register is at ATA address 6, with CS1 active instead of CS0 */
|
|
|
|
hw->io_ports[IDE_CONTROL_OFFSET] = data_port |
|
|
IO_FIELD(R_ATA_CTRL_DATA, addr, 6) |
|
|
IO_STATE(R_ATA_CTRL_DATA, cs1, active);
|
|
|
|
/* whats this for ? */
|
|
|
|
hw->io_ports[IDE_IRQ_OFFSET] = 0;
|
|
}
|
|
|
|
static inline void ide_init_default_hwifs(void)
|
|
{
|
|
hw_regs_t hw;
|
|
int index;
|
|
|
|
for(index = 0; index < MAX_HWIFS; index++) {
|
|
ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, NULL);
|
|
hw.irq = ide_default_irq(ide_default_io_base(index));
|
|
ide_register_hw(&hw, NULL);
|
|
}
|
|
}
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* __ASMCRIS_IDE_H */
|