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_ARCH_OBSOLETE_INIT
  22 #define ide_default_io_ctl(base)        ((base) + 0x206) /* obsolete */
  23
  24 #define __ide_insl(data_reg, buffer, wcount) \
  25         __ide_insw(data_reg, buffer, (wcount)<<1)
  26 #define __ide_outsl(data_reg, buffer, wcount) \
  27         __ide_outsw(data_reg, buffer, (wcount)<<1)
  28
  29 /* On sparc, I/O ports and MMIO registers are accessed identically.  */
  30 #define __ide_mm_insw   __ide_insw
  31 #define __ide_mm_insl   __ide_insl
  32 #define __ide_mm_outsw  __ide_outsw
  33 #define __ide_mm_outsl  __ide_outsl
  34
  35 static __inline__ void __ide_insw(unsigned long port,
  36                                   void *dst,
  37                                   unsigned long count)
  38 {
  39         volatile unsigned short *data_port;
  40         /* unsigned long end = (unsigned long)dst + (count << 1); */ /* P3 */
  41         u16 *ps = dst;
  42         u32 *pi;
  43
  44         data_port = (volatile unsigned short *)port;
  45
  46         if(((unsigned long)ps) & 0x2) {
  47                 *ps++ = *data_port;
  48                 count--;
  49         }
  50         pi = (u32 *)ps;
  51         while(count >= 2) {
  52                 u32 w;
  53
  54                 w  = (*data_port) << 16;
  55                 w |= (*data_port);
  56                 *pi++ = w;
  57                 count -= 2;
  58         }
  59         ps = (u16 *)pi;
  60         if(count)
  61                 *ps++ = *data_port;
  62
  63         /* __flush_dcache_range((unsigned long)dst, end); */ /* P3 see hme */
  64 }
  65
  66 static __inline__ void __ide_outsw(unsigned long port,
  67                                    const void *src,
  68                                    unsigned long count)
  69 {
  70         volatile unsigned short *data_port;
  71         /* unsigned long end = (unsigned long)src + (count << 1); */
  72         const u16 *ps = src;
  73         const u32 *pi;
  74
  75         data_port = (volatile unsigned short *)port;
  76
  77         if(((unsigned long)src) & 0x2) {
  78                 *data_port = *ps++;
  79                 count--;
  80         }
  81         pi = (const u32 *)ps;
  82         while(count >= 2) {
  83                 u32 w;
  84
  85                 w = *pi++;
  86                 *data_port = (w >> 16);
  87                 *data_port = w;
  88                 count -= 2;
  89         }
  90         ps = (const u16 *)pi;
  91         if(count)
  92                 *data_port = *ps;
  93
  94         /* __flush_dcache_range((unsigned long)src, end); */ /* P3 see hme */
  95 }
  96
  97 #endif /* __KERNEL__ */
  98
  99 #endif /* _SPARC_IDE_H */