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 20 static 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 30 static 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 */ 38 static inline void fd_enable_dma(void) 39 { 40 vdma_enable(JAZZ_FLOPPY_DMA); 41 } 42 43 static inline void fd_disable_dma(void) 44 { 45 vdma_disable(JAZZ_FLOPPY_DMA); 46 } 47 48 static inline int fd_request_dma(void) 49 { 50 return 0; 51 } 52 53 static inline void fd_free_dma(void) 54 { 55 } 56 57 static inline void fd_clear_dma_ff(void) 58 { 59 } 60 61 static inline void fd_set_dma_mode(char mode) 62 { 63 vdma_set_mode(JAZZ_FLOPPY_DMA, mode); 64 } 65 66 static inline void fd_set_dma_addr(char *a) 67 { 68 vdma_set_addr(JAZZ_FLOPPY_DMA, vdma_phys2log(CPHYSADDR((unsigned long)a))); 69 } 70 71 static inline void fd_set_dma_count(unsigned int count) 72 { 73 vdma_set_count(JAZZ_FLOPPY_DMA, count); 74 } 75 76 static inline int fd_get_dma_residue(void) 77 { 78 return vdma_get_residue(JAZZ_FLOPPY_DMA); 79 } 80 81 static inline void fd_enable_irq(void) 82 { 83 } 84 85 static inline void fd_disable_irq(void) 86 { 87 } 88 89 static inline int fd_request_irq(void) 90 { 91 return request_irq(FLOPPY_IRQ, floppy_interrupt, 92 0, "floppy", NULL); 93 } 94 95 static inline void fd_free_irq(void) 96 { 97 free_irq(FLOPPY_IRQ, NULL); 98 } 99 100 static inline unsigned long fd_getfdaddr1(void) 101 { 102 return JAZZ_FDC_BASE; 103 } 104 105 static 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 } 116 117 static 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 } 122 123 static 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