include/asm-sparc/ide.h

   1 /* $Id: ide.h,v 1.7 2002/01/16 20:58:40 davem Exp $
   2  * ide.h: SPARC PCI specific IDE glue.
   3  *
   4  * Copyright (C) 1997  David S. Miller (davem@caip.rutgers.edu)
   5  * Copyright (C) 1998  Eddie C. Dost   (ecd@skynet.be)
   6  * Adaptation from sparc64 version to sparc by Pete Zaitcev.
   7  */
   8
   9 #ifndef _SPARC_IDE_H
  10 #define _SPARC_IDE_H
  11
  12 #ifdef __KERNEL__
  13
  14 #include <asm/pgtable.h>
  15 #include <asm/io.h>
  16 #include <asm/psr.h>
  17
  18 #undef  MAX_HWIFS
  19 #define MAX_HWIFS       2
  20
  21 #define ide_default_io_ctl(base)        ((base) + 0x206) /* obsolete */
  22
  23 #define __ide_insl(data_reg, buffer, wcount) \
  24         __ide_insw(data_reg, buffer, (wcount)<<1)
  25 #define __ide_outsl(data_reg, buffer, wcount) \
  26         __ide_outsw(data_reg, buffer, (wcount)<<1)
  27
  28 /* On sparc, I/O ports and MMIO registers are accessed identically.  */
  29 #define __ide_mm_insw   __ide_insw
  30 #define __ide_mm_insl   __ide_insl
  31 #define __ide_mm_outsw  __ide_outsw
  32 #define __ide_mm_outsl  __ide_outsl
  33
  34 static __inline__ void __ide_insw(unsigned long port,
  35                                   void *dst,
  36                                   unsigned long count)
  37 {
  38         volatile unsigned short *data_port;
  39         /* unsigned long end = (unsigned long)dst + (count << 1); */ /* P3 */
  40         u16 *ps = dst;
  41         u32 *pi;
  42
  43         data_port = (volatile unsigned short *)port;
  44
  45         if(((unsigned long)ps) & 0x2) {
  46                 *ps++ = *data_port;
  47                 count--;
  48         }
  49         pi = (u32 *)ps;
  50         while(count >= 2) {
  51                 u32 w;
  52
  53                 w  = (*data_port) << 16;
  54                 w |= (*data_port);
  55                 *pi++ = w;
  56                 count -= 2;
  57         }
  58         ps = (u16 *)pi;
  59         if(count)
  60                 *ps++ = *data_port;
  61
  62         /* __flush_dcache_range((unsigned long)dst, end); */ /* P3 see hme */
  63 }
  64
  65 static __inline__ void __ide_outsw(unsigned long port,
  66                                    const void *src,
  67                                    unsigned long count)
  68 {
  69         volatile unsigned short *data_port;
  70         /* unsigned long end = (unsigned long)src + (count << 1); */
  71         const u16 *ps = src;
  72         const u32 *pi;
  73
  74         data_port = (volatile unsigned short *)port;
  75
  76         if(((unsigned long)src) & 0x2) {
  77                 *data_port = *ps++;
  78                 count--;
  79         }
  80         pi = (const u32 *)ps;
  81         while(count >= 2) {
  82                 u32 w;
  83
  84                 w = *pi++;
  85                 *data_port = (w >> 16);
  86                 *data_port = w;
  87                 count -= 2;
  88         }
  89         ps = (const u16 *)pi;
  90         if(count)
  91                 *data_port = *ps;
  92
  93         /* __flush_dcache_range((unsigned long)src, end); */ /* P3 see hme */
  94 }
  95
  96 #endif /* __KERNEL__ */
  97
  98 #endif /* _SPARC_IDE_H */