home *** CD-ROM | disk | FTP | other *** search
- /* $Id: ide.h,v 1.7 2002/01/16 20:58:40 davem Exp $
- * ide.h: SPARC PCI specific IDE glue.
- *
- * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
- * Adaptation from sparc64 version to sparc by Pete Zaitcev.
- */
-
- #ifndef _SPARC_IDE_H
- #define _SPARC_IDE_H
-
- #ifdef __KERNEL__
-
- #include <asm/pgtable.h>
- #include <asm/io.h>
- #include <asm/psr.h>
-
- #undef MAX_HWIFS
- #define MAX_HWIFS 2
-
- #define IDE_ARCH_OBSOLETE_INIT
- #define ide_default_io_ctl(base) ((base) + 0x206) /* obsolete */
-
- #define __ide_insl(data_reg, buffer, wcount) \
- __ide_insw(data_reg, buffer, (wcount)<<1)
- #define __ide_outsl(data_reg, buffer, wcount) \
- __ide_outsw(data_reg, buffer, (wcount)<<1)
-
- /* On sparc, I/O ports and MMIO registers are accessed identically. */
- #define __ide_mm_insw __ide_insw
- #define __ide_mm_insl __ide_insl
- #define __ide_mm_outsw __ide_outsw
- #define __ide_mm_outsl __ide_outsl
-
- static __inline__ void __ide_insw(unsigned long port,
- void *dst,
- unsigned long count)
- {
- volatile unsigned short *data_port;
- /* unsigned long end = (unsigned long)dst + (count << 1); */ /* P3 */
- u16 *ps = dst;
- u32 *pi;
-
- data_port = (volatile unsigned short *)port;
-
- if(((unsigned long)ps) & 0x2) {
- *ps++ = *data_port;
- count--;
- }
- pi = (u32 *)ps;
- while(count >= 2) {
- u32 w;
-
- w = (*data_port) << 16;
- w |= (*data_port);
- *pi++ = w;
- count -= 2;
- }
- ps = (u16 *)pi;
- if(count)
- *ps++ = *data_port;
-
- /* __flush_dcache_range((unsigned long)dst, end); */ /* P3 see hme */
- }
-
- static __inline__ void __ide_outsw(unsigned long port,
- const void *src,
- unsigned long count)
- {
- volatile unsigned short *data_port;
- /* unsigned long end = (unsigned long)src + (count << 1); */
- const u16 *ps = src;
- const u32 *pi;
-
- data_port = (volatile unsigned short *)port;
-
- if(((unsigned long)src) & 0x2) {
- *data_port = *ps++;
- count--;
- }
- pi = (const u32 *)ps;
- while(count >= 2) {
- u32 w;
-
- w = *pi++;
- *data_port = (w >> 16);
- *data_port = w;
- count -= 2;
- }
- ps = (const u16 *)pi;
- if(count)
- *data_port = *ps;
-
- /* __flush_dcache_range((unsigned long)src, end); */ /* P3 see hme */
- }
-
- #endif /* __KERNEL__ */
-
- #endif /* _SPARC_IDE_H */
-