| /* $Id: ide.h,v 1.6 2000/05/27 00:49:37 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 <linux/config.h> |
| #include <asm/pgtable.h> |
| #include <asm/io.h> |
| #include <asm/hdreg.h> |
| #include <asm/psr.h> |
| |
| #undef MAX_HWIFS |
| #define MAX_HWIFS 2 |
| |
| static __inline__ int ide_default_irq(ide_ioreg_t base) |
| { |
| return 0; |
| } |
| |
| static __inline__ ide_ioreg_t ide_default_io_base(int index) |
| { |
| return 0; |
| } |
| |
| /* |
| * Doing any sort of ioremap() here does not work |
| * because this function may be called with null aguments. |
| */ |
| static __inline__ void ide_init_hwif_ports(hw_regs_t *hw, ide_ioreg_t data_port, ide_ioreg_t ctrl_port, int *irq) |
| { |
| ide_ioreg_t reg = data_port; |
| int i; |
| |
| for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) { |
| hw->io_ports[i] = reg; |
| reg += 1; |
| } |
| if (ctrl_port) { |
| hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port; |
| } else { |
| hw->io_ports[IDE_CONTROL_OFFSET] = 0; |
| } |
| if (irq != NULL) |
| *irq = 0; |
| hw->io_ports[IDE_IRQ_OFFSET] = 0; |
| } |
| |
| /* |
| * This registers the standard ports for this architecture with the IDE |
| * driver. |
| */ |
| static __inline__ void ide_init_default_hwifs(void) |
| { |
| #ifndef CONFIG_BLK_DEV_IDEPCI |
| hw_regs_t hw; |
| int index; |
| |
| for (index = 0; index < MAX_HWIFS; index++) { |
| ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, NULL); |
| hw.irq = ide_default_irq(ide_default_io_base(index)); |
| ide_register_hw(&hw, NULL); |
| } |
| #endif /* CONFIG_BLK_DEV_IDEPCI */ |
| } |
| |
| #undef SUPPORT_SLOW_DATA_PORTS |
| #define SUPPORT_SLOW_DATA_PORTS 0 |
| |
| #undef SUPPORT_VLB_SYNC |
| #define SUPPORT_VLB_SYNC 0 |
| |
| #undef HD_DATA |
| #define HD_DATA ((ide_ioreg_t)0) |
| |
| /* From m68k code... */ |
| |
| #ifdef insl |
| #undef insl |
| #endif |
| #ifdef outsl |
| #undef outsl |
| #endif |
| #ifdef insw |
| #undef insw |
| #endif |
| #ifdef outsw |
| #undef outsw |
| #endif |
| |
| #define insl(data_reg, buffer, wcount) insw(data_reg, buffer, (wcount)<<1) |
| #define outsl(data_reg, buffer, wcount) outsw(data_reg, buffer, (wcount)<<1) |
| |
| #define insw(port, buf, nr) ide_insw((port), (buf), (nr)) |
| #define outsw(port, buf, nr) ide_outsw((port), (buf), (nr)) |
| |
| 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 */ |