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