1/* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 1998, 2003 by Ralf Baechle 7 */ 8#ifndef __ASM_MACH_JAZZ_FLOPPY_H 9#define __ASM_MACH_JAZZ_FLOPPY_H 10 11#include <linux/delay.h> 12#include <linux/linkage.h> 13#include <linux/types.h> 14#include <linux/mm.h> 15#include <asm/addrspace.h> 16#include <asm/jazz.h> 17#include <asm/jazzdma.h> 18#include <asm/pgtable.h> 19 20static inline unsigned char fd_inb(unsigned int port) 21{ 22 unsigned char c; 23 24 c = *(volatile unsigned char *) port; 25 udelay(1); 26 27 return c; 28} 29 30static inline void fd_outb(unsigned char value, unsigned int port) 31{ 32 *(volatile unsigned char *) port = value; 33} 34 35/* 36 * How to access the floppy DMA functions. 37 */ 38static inline void fd_enable_dma(void) 39{ 40 vdma_enable(JAZZ_FLOPPY_DMA); 41} 42 43static inline void fd_disable_dma(void) 44{ 45 vdma_disable(JAZZ_FLOPPY_DMA); 46} 47 48static inline int fd_request_dma(void) 49{ 50 return 0; 51} 52 53static inline void fd_free_dma(void) 54{ 55} 56 57static inline void fd_clear_dma_ff(void) 58{ 59} 60 61static inline void fd_set_dma_mode(char mode) 62{ 63 vdma_set_mode(JAZZ_FLOPPY_DMA, mode); 64} 65 66static inline void fd_set_dma_addr(char *a) 67{ 68 vdma_set_addr(JAZZ_FLOPPY_DMA, vdma_phys2log(CPHYSADDR((unsigned long)a))); 69} 70 71static inline void fd_set_dma_count(unsigned int count) 72{ 73 vdma_set_count(JAZZ_FLOPPY_DMA, count); 74} 75 76static inline int fd_get_dma_residue(void) 77{ 78 return vdma_get_residue(JAZZ_FLOPPY_DMA); 79} 80 81static inline void fd_enable_irq(void) 82{ 83} 84 85static inline void fd_disable_irq(void) 86{ 87} 88 89static inline int fd_request_irq(void) 90{ 91 return request_irq(FLOPPY_IRQ, floppy_interrupt, 92 0, "floppy", NULL); 93} 94 95static inline void fd_free_irq(void) 96{ 97 free_irq(FLOPPY_IRQ, NULL); 98} 99 100static inline unsigned long fd_getfdaddr1(void) 101{ 102 return JAZZ_FDC_BASE; 103} 104 105static inline unsigned long fd_dma_mem_alloc(unsigned long size) 106{ 107 unsigned long mem; 108 109 mem = __get_dma_pages(GFP_KERNEL, get_order(size)); 110 if(!mem) 111 return 0; 112 vdma_alloc(CPHYSADDR(mem), size); /* XXX error checking */ 113 114 return mem; 115} 116 117static inline void fd_dma_mem_free(unsigned long addr, unsigned long size) 118{ 119 vdma_free(vdma_phys2log(CPHYSADDR(addr))); 120 free_pages(addr, get_order(size)); 121} 122 123static inline unsigned long fd_drive_type(unsigned long n) 124{ 125 /* XXX This is wrong for machines with ED 2.88mb disk drives like the 126 Olivetti M700. Anyway, we should suck this from the ARC 127 firmware. */ 128 if (n == 0) 129 return 4; /* 3,5", 1.44mb */ 130 131 return 0; 132} 133 134#endif /* __ASM_MACH_JAZZ_FLOPPY_H */ 135