include/asm-cris/arch-v32/ide.h

   1 /*
   2  *  linux/include/asm-cris/ide.h
   3  *
   4  *  Copyright (C) 2000-2004  Axis Communications AB
   5  *
   6  *  Authors:    Bjorn Wesen, Mikael Starvik
   7  *
   8  */
   9
  10 /*
  11  *  This file contains the ETRAX FS specific IDE code.
  12  */
  13
  14 #ifndef __ASMCRIS_IDE_H
  15 #define __ASMCRIS_IDE_H
  16
  17 #ifdef __KERNEL__
  18
  19 #include <asm/arch/hwregs/intr_vect.h>
  20 #include <asm/arch/hwregs/ata_defs.h>
  21 #include <asm/io.h>
  22 #include <asm-generic/ide_iops.h>
  23
  24
  25 /* ETRAX FS can support 4 IDE busses on the same pins (serialized) */
  26
  27 #define MAX_HWIFS       4
  28
  29 static inline int ide_default_irq(unsigned long base)
  30 {
  31         /* all IDE busses share the same IRQ,
  32          * this has the side-effect that ide-probe.c will cluster our 4 interfaces
  33          * together in a hwgroup, and will serialize accesses. this is good, because
  34          * we can't access more than one interface at the same time on ETRAX100.
  35          */
  36         return ATA_INTR_VECT;
  37 }
  38
  39 static inline unsigned long ide_default_io_base(int index)
  40 {
  41         reg_ata_rw_ctrl2 ctrl2 = {.sel = index};
  42         /* we have no real I/O base address per interface, since all go through the
  43          * same register. but in a bitfield in that register, we have the i/f number.
  44          * so we can use the io_base to remember that bitfield.
  45          */
  46         ctrl2.sel = index;
  47
  48         return REG_TYPE_CONV(unsigned long, reg_ata_rw_ctrl2, ctrl2);
  49 }
  50
  51 /* some configuration options we don't need */
  52
  53 #undef SUPPORT_VLB_SYNC
  54 #define SUPPORT_VLB_SYNC 0
  55
  56 #define IDE_ARCH_ACK_INTR
  57 #define ide_ack_intr(hwif)      (hwif)->hw.ack_intr(hwif)
  58
  59 #endif /* __KERNEL__ */
  60
  61 #endif /* __ASMCRIS_IDE_H */