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) 1996, 1997, 1998, 2003 by Ralf Baechle 7 */ 8 #ifndef __ASM_MACH_GENERIC_FLOPPY_H 9 #define __ASM_MACH_GENERIC_FLOPPY_H 10 11 #include <linux/delay.h> 12 #include <linux/init.h> 13 #include <linux/ioport.h> 14 #include <linux/sched.h> 15 #include <linux/linkage.h> 16 #include <linux/types.h> 17 #include <linux/mm.h> 18 19 #include <asm/bootinfo.h> 20 #include <asm/cachectl.h> 21 #include <asm/dma.h> 22 #include <asm/floppy.h> 23 #include <asm/io.h> 24 #include <asm/irq.h> 25 #include <asm/pgtable.h> 26 27 /* 28 * How to access the FDC's registers. 29 */ 30 static inline unsigned char fd_inb(unsigned int port) 31 { 32 return inb_p(port); 33 } 34 35 static inline void fd_outb(unsigned char value, unsigned int port) 36 { 37 outb_p(value, port); 38 } 39 40 /* 41 * How to access the floppy DMA functions. 42 */ 43 static inline void fd_enable_dma(void) 44 { 45 enable_dma(FLOPPY_DMA); 46 } 47 48 static inline void fd_disable_dma(void) 49 { 50 disable_dma(FLOPPY_DMA); 51 } 52 53 static inline int fd_request_dma(void) 54 { 55 return request_dma(FLOPPY_DMA, "floppy"); 56 } 57 58 static inline void fd_free_dma(void) 59 { 60 free_dma(FLOPPY_DMA); 61 } 62 63 static inline void fd_clear_dma_ff(void) 64 { 65 clear_dma_ff(FLOPPY_DMA); 66 } 67 68 static inline void fd_set_dma_mode(char mode) 69 { 70 set_dma_mode(FLOPPY_DMA, mode); 71 } 72 73 static inline void fd_set_dma_addr(char *addr) 74 { 75 set_dma_addr(FLOPPY_DMA, (unsigned long) addr); 76 } 77 78 static inline void fd_set_dma_count(unsigned int count) 79 { 80 set_dma_count(FLOPPY_DMA, count); 81 } 82 83 static inline int fd_get_dma_residue(void) 84 { 85 return get_dma_residue(FLOPPY_DMA); 86 } 87 88 static inline void fd_enable_irq(void) 89 { 90 enable_irq(FLOPPY_IRQ); 91 } 92 93 static inline void fd_disable_irq(void) 94 { 95 disable_irq(FLOPPY_IRQ); 96 } 97 98 static inline int fd_request_irq(void) 99 { 100 return request_irq(FLOPPY_IRQ, floppy_interrupt, 101 0, "floppy", NULL); 102 } 103 104 static inline void fd_free_irq(void) 105 { 106 free_irq(FLOPPY_IRQ, NULL); 107 } 108 109 #define fd_free_irq() free_irq(FLOPPY_IRQ, NULL); 110 111 112 static inline unsigned long fd_getfdaddr1(void) 113 { 114 return 0x3f0; 115 } 116 117 static inline unsigned long fd_dma_mem_alloc(unsigned long size) 118 { 119 unsigned long mem; 120 121 mem = __get_dma_pages(GFP_KERNEL, get_order(size)); 122 123 return mem; 124 } 125 126 static inline void fd_dma_mem_free(unsigned long addr, unsigned long size) 127 { 128 free_pages(addr, get_order(size)); 129 } 130 131 static inline unsigned long fd_drive_type(unsigned long n) 132 { 133 if (n == 0) 134 return 4; /* 3,5", 1.44mb */ 135 136 return 0; 137 } 138 139 #endif /* __ASM_MACH_GENERIC_FLOPPY_H */ 140