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kernel/linux-rt-4.4.41/arch/mips/include/asm/mach-jazz/floppy.h 2.51 KB
5113f6f70   김현기   kernel add
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  /*
   * This file is subject to the terms and conditions of the GNU General Public
   * License.  See the file "COPYING" in the main directory of this archive
   * for more details.
   *
   * Copyright (C) 1998, 2003 by Ralf Baechle
   */
  #ifndef __ASM_MACH_JAZZ_FLOPPY_H
  #define __ASM_MACH_JAZZ_FLOPPY_H
  
  #include <linux/delay.h>
  #include <linux/linkage.h>
  #include <linux/types.h>
  #include <linux/mm.h>
  #include <asm/addrspace.h>
  #include <asm/jazz.h>
  #include <asm/jazzdma.h>
  #include <asm/pgtable.h>
  
  static inline unsigned char fd_inb(unsigned int port)
  {
  	unsigned char c;
  
  	c = *(volatile unsigned char *) port;
  	udelay(1);
  
  	return c;
  }
  
  static inline void fd_outb(unsigned char value, unsigned int port)
  {
  	*(volatile unsigned char *) port = value;
  }
  
  /*
   * How to access the floppy DMA functions.
   */
  static inline void fd_enable_dma(void)
  {
  	vdma_enable(JAZZ_FLOPPY_DMA);
  }
  
  static inline void fd_disable_dma(void)
  {
  	vdma_disable(JAZZ_FLOPPY_DMA);
  }
  
  static inline int fd_request_dma(void)
  {
  	return 0;
  }
  
  static inline void fd_free_dma(void)
  {
  }
  
  static inline void fd_clear_dma_ff(void)
  {
  }
  
  static inline void fd_set_dma_mode(char mode)
  {
  	vdma_set_mode(JAZZ_FLOPPY_DMA, mode);
  }
  
  static inline void fd_set_dma_addr(char *a)
  {
  	vdma_set_addr(JAZZ_FLOPPY_DMA, vdma_phys2log(CPHYSADDR((unsigned long)a)));
  }
  
  static inline void fd_set_dma_count(unsigned int count)
  {
  	vdma_set_count(JAZZ_FLOPPY_DMA, count);
  }
  
  static inline int fd_get_dma_residue(void)
  {
  	return vdma_get_residue(JAZZ_FLOPPY_DMA);
  }
  
  static inline void fd_enable_irq(void)
  {
  }
  
  static inline void fd_disable_irq(void)
  {
  }
  
  static inline int fd_request_irq(void)
  {
  	return request_irq(FLOPPY_IRQ, floppy_interrupt,
  			   0, "floppy", NULL);
  }
  
  static inline void fd_free_irq(void)
  {
  	free_irq(FLOPPY_IRQ, NULL);
  }
  
  static inline unsigned long fd_getfdaddr1(void)
  {
  	return JAZZ_FDC_BASE;
  }
  
  static inline unsigned long fd_dma_mem_alloc(unsigned long size)
  {
  	unsigned long mem;
  
  	mem = __get_dma_pages(GFP_KERNEL, get_order(size));
  	if(!mem)
  		return 0;
  	vdma_alloc(CPHYSADDR(mem), size);	/* XXX error checking */
  
  	return mem;
  }
  
  static inline void fd_dma_mem_free(unsigned long addr, unsigned long size)
  {
  	vdma_free(vdma_phys2log(CPHYSADDR(addr)));
  	free_pages(addr, get_order(size));
  }
  
  static inline unsigned long fd_drive_type(unsigned long n)
  {
  	/* XXX This is wrong for machines with ED 2.88mb disk drives like the
  	   Olivetti M700.  Anyway, we should suck this from the ARC
  	   firmware.  */
  	if (n == 0)
  		return 4;	/* 3,5", 1.44mb */
  
  	return 0;
  }
  
  #endif /* __ASM_MACH_JAZZ_FLOPPY_H */