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 19 static inline unsigned char fd_inb(unsigned int base, unsigned int reg) 20 { 21 unsigned char c; 22 23 c = *(volatile unsigned char *) (base + reg); 24 udelay(1); 25 26 return c; 27 } 28 29 static inline void fd_outb(unsigned char value, unsigned int base, unsigned int reg) 30 { 31 *(volatile unsigned char *) (base + reg) = value; 32 } 33 34 /* 35 * How to access the floppy DMA functions. 36 */ 37 static inline void fd_enable_dma(void) 38 { 39 vdma_enable(JAZZ_FLOPPY_DMA); 40 } 41 42 static inline void fd_disable_dma(void) 43 { 44 vdma_disable(JAZZ_FLOPPY_DMA); 45 } 46 47 static inline int fd_request_dma(void) 48 { 49 return 0; 50 } 51 52 static inline void fd_free_dma(void) 53 { 54 } 55 56 static inline void fd_clear_dma_ff(void) 57 { 58 } 59 60 static inline void fd_set_dma_mode(char mode) 61 { 62 vdma_set_mode(JAZZ_FLOPPY_DMA, mode); 63 } 64 65 static inline void fd_set_dma_addr(char *a) 66 { 67 vdma_set_addr(JAZZ_FLOPPY_DMA, vdma_phys2log(CPHYSADDR((unsigned long)a))); 68 } 69 70 static inline void fd_set_dma_count(unsigned int count) 71 { 72 vdma_set_count(JAZZ_FLOPPY_DMA, count); 73 } 74 75 static inline int fd_get_dma_residue(void) 76 { 77 return vdma_get_residue(JAZZ_FLOPPY_DMA); 78 } 79 80 static inline void fd_enable_irq(void) 81 { 82 } 83 84 static inline void fd_disable_irq(void) 85 { 86 } 87 88 static inline int fd_request_irq(void) 89 { 90 return request_irq(FLOPPY_IRQ, floppy_interrupt, 91 0, "floppy", NULL); 92 } 93 94 static inline void fd_free_irq(void) 95 { 96 free_irq(FLOPPY_IRQ, NULL); 97 } 98 99 static inline unsigned long fd_getfdaddr1(void) 100 { 101 return JAZZ_FDC_BASE; 102 } 103 104 static inline unsigned long fd_dma_mem_alloc(unsigned long size) 105 { 106 unsigned long mem; 107 108 mem = __get_dma_pages(GFP_KERNEL, get_order(size)); 109 if(!mem) 110 return 0; 111 vdma_alloc(CPHYSADDR(mem), size); /* XXX error checking */ 112 113 return mem; 114 } 115 116 static inline void fd_dma_mem_free(unsigned long addr, unsigned long size) 117 { 118 vdma_free(vdma_phys2log(CPHYSADDR(addr))); 119 free_pages(addr, get_order(size)); 120 } 121 122 static inline unsigned long fd_drive_type(unsigned long n) 123 { 124 /* XXX This is wrong for machines with ED 2.88mb disk drives like the 125 Olivetti M700. Anyway, we should suck this from the ARC 126 firmware. */ 127 if (n == 0) 128 return 4; /* 3,5", 1.44mb */ 129 130 return 0; 131 } 132 133 #endif /* __ASM_MACH_JAZZ_FLOPPY_H */ 134