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 <linux/config.h>
  15 #include <asm/pgtable.h>
  16 #include <asm/io.h>
  17 #include <asm/psr.h>
  18
  19 #undef  MAX_HWIFS
  20 #define MAX_HWIFS       2
  21
  22 #define IDE_ARCH_OBSOLETE_INIT
  23 #define ide_default_io_ctl(base)        ((base) + 0x206) /* obsolete */
  24
  25 #define __ide_insl(data_reg, buffer, wcount) \
  26         __ide_insw(data_reg, buffer, (wcount)<<1)
  27 #define __ide_outsl(data_reg, buffer, wcount) \
  28         __ide_outsw(data_reg, buffer, (wcount)<<1)
  29
  30 /* On sparc, I/O ports and MMIO registers are accessed identically.  */
  31 #define __ide_mm_insw   __ide_insw
  32 #define __ide_mm_insl   __ide_insl
  33 #define __ide_mm_outsw  __ide_outsw
  34 #define __ide_mm_outsl  __ide_outsl
  35
  36 static __inline__ void __ide_insw(unsigned long port,
  37                                   void *dst,
  38                                   unsigned long count)
  39 {
  40         volatile unsigned short *data_port;
  41         /* unsigned long end = (unsigned long)dst + (count << 1); */ /* P3 */
  42         u16 *ps = dst;
  43         u32 *pi;
  44
  45         data_port = (volatile unsigned short *)port;
  46
  47         if(((unsigned long)ps) & 0x2) {
  48                 *ps++ = *data_port;
  49                 count--;
  50         }
  51         pi = (u32 *)ps;
  52         while(count >= 2) {
  53                 u32 w;
  54
  55                 w  = (*data_port) << 16;
  56                 w |= (*data_port);
  57                 *pi++ = w;
  58                 count -= 2;
  59         }
  60         ps = (u16 *)pi;
  61         if(count)
  62                 *ps++ = *data_port;
  63
  64         /* __flush_dcache_range((unsigned long)dst, end); */ /* P3 see hme */
  65 }
  66
  67 static __inline__ void __ide_outsw(unsigned long port,
  68                                    const void *src,
  69                                    unsigned long count)
  70 {
  71         volatile unsigned short *data_port;
  72         /* unsigned long end = (unsigned long)src + (count << 1); */
  73         const u16 *ps = src;
  74         const u32 *pi;
  75
  76         data_port = (volatile unsigned short *)port;
  77
  78         if(((unsigned long)src) & 0x2) {
  79                 *data_port = *ps++;
  80                 count--;
  81         }
  82         pi = (const u32 *)ps;
  83         while(count >= 2) {
  84                 u32 w;
  85
  86                 w = *pi++;
  87                 *data_port = (w >> 16);
  88                 *data_port = w;
  89                 count -= 2;
  90         }
  91         ps = (const u16 *)pi;
  92         if(count)
  93                 *data_port = *ps;
  94
  95         /* __flush_dcache_range((unsigned long)src, end); */ /* P3 see hme */
  96 }
  97
  98 #endif /* __KERNEL__ */
  99
 100 #endif /* _SPARC_IDE_H */