136 lines
2.7 KiB
C
136 lines
2.7 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1998, 2003 by Ralf Baechle
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*/
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#ifndef __ASM_MACH_JAZZ_FLOPPY_H
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#define __ASM_MACH_JAZZ_FLOPPY_H
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#include <linux/delay.h>
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#include <linux/init.h>
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#include <linux/linkage.h>
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#include <linux/types.h>
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#include <linux/mm.h>
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#include <asm/addrspace.h>
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#include <asm/jazz.h>
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#include <asm/jazzdma.h>
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#include <asm/pgtable.h>
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static inline unsigned char fd_inb(unsigned int port)
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{
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unsigned char c;
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c = *(volatile unsigned char *) port;
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udelay(1);
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return c;
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}
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static inline void fd_outb(unsigned char value, unsigned int port)
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{
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*(volatile unsigned char *) port = value;
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}
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/*
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* How to access the floppy DMA functions.
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*/
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static inline void fd_enable_dma(void)
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{
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vdma_enable(JAZZ_FLOPPY_DMA);
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}
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static inline void fd_disable_dma(void)
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{
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vdma_disable(JAZZ_FLOPPY_DMA);
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}
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static inline int fd_request_dma(void)
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{
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return 0;
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}
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static inline void fd_free_dma(void)
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{
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}
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static inline void fd_clear_dma_ff(void)
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{
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}
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static inline void fd_set_dma_mode(char mode)
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{
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vdma_set_mode(JAZZ_FLOPPY_DMA, mode);
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}
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static inline void fd_set_dma_addr(char *a)
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{
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vdma_set_addr(JAZZ_FLOPPY_DMA, vdma_phys2log(CPHYSADDR((unsigned long)a)));
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}
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static inline void fd_set_dma_count(unsigned int count)
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{
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vdma_set_count(JAZZ_FLOPPY_DMA, count);
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}
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static inline int fd_get_dma_residue(void)
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{
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return vdma_get_residue(JAZZ_FLOPPY_DMA);
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}
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static inline void fd_enable_irq(void)
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{
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}
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static inline void fd_disable_irq(void)
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{
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}
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static inline int fd_request_irq(void)
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{
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return request_irq(FLOPPY_IRQ, floppy_interrupt,
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SA_INTERRUPT | SA_SAMPLE_RANDOM, "floppy", NULL);
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}
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static inline void fd_free_irq(void)
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{
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free_irq(FLOPPY_IRQ, NULL);
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}
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static inline unsigned long fd_getfdaddr1(void)
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{
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return JAZZ_FDC_BASE;
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}
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static inline unsigned long fd_dma_mem_alloc(unsigned long size)
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{
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unsigned long mem;
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mem = __get_dma_pages(GFP_KERNEL, get_order(size));
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if(!mem)
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return 0;
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vdma_alloc(CPHYSADDR(mem), size); /* XXX error checking */
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return mem;
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}
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static inline void fd_dma_mem_free(unsigned long addr, unsigned long size)
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{
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vdma_free(vdma_phys2log(CPHYSADDR(addr)));
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free_pages(addr, get_order(size));
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}
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static inline unsigned long fd_drive_type(unsigned long n)
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{
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/* XXX This is wrong for machines with ED 2.88mb disk drives like the
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Olivetti M700. Anyway, we should suck this from the ARC
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firmware. */
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if (n == 0)
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return 4; /* 3,5", 1.44mb */
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return 0;
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}
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#endif /* __ASM_MACH_JAZZ_FLOPPY_H */
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