| /* |
| * Architecture specific parts of the Floppy driver |
| * |
| * 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) 1995 - 2000 Ralf Baechle |
| */ |
| #ifndef _ASM_FLOPPY_H |
| #define _ASM_FLOPPY_H |
| |
| #include <asm/bootinfo.h> |
| #include <asm/jazz.h> |
| #include <asm/jazzdma.h> |
| |
| struct fd_ops { |
| unsigned char (*fd_inb)(unsigned int port); |
| void (*fd_outb)(unsigned char value, unsigned int port); |
| |
| /* |
| * How to access the floppy DMA functions. |
| */ |
| void (*fd_enable_dma)(int channel); |
| void (*fd_disable_dma)(int channel); |
| int (*fd_request_dma)(int channel); |
| void (*fd_free_dma)(int channel); |
| void (*fd_clear_dma_ff)(int channel); |
| void (*fd_set_dma_mode)(int channel, char mode); |
| void (*fd_set_dma_addr)(int channel, unsigned int a); |
| void (*fd_set_dma_count)(int channel, unsigned int count); |
| int (*fd_get_dma_residue)(int channel); |
| void (*fd_enable_irq)(int irq); |
| void (*fd_disable_irq)(int irq); |
| unsigned long (*fd_getfdaddr1)(void); |
| unsigned long (*fd_dma_mem_alloc)(unsigned long size); |
| void (*fd_dma_mem_free)(unsigned long addr, unsigned long size); |
| unsigned long (*fd_drive_type)(unsigned long); |
| }; |
| |
| extern struct fd_ops *fd_ops; |
| |
| #define fd_inb(port) fd_ops->fd_inb(port) |
| #define fd_outb(value,port) fd_ops->fd_outb(value,port) |
| |
| #define fd_enable_dma() fd_ops->fd_enable_dma(FLOPPY_DMA) |
| #define fd_disable_dma() fd_ops->fd_disable_dma(FLOPPY_DMA) |
| #define fd_request_dma() fd_ops->fd_request_dma(FLOPPY_DMA) |
| #define fd_free_dma() fd_ops->fd_free_dma(FLOPPY_DMA) |
| #define fd_clear_dma_ff() fd_ops->fd_clear_dma_ff(FLOPPY_DMA) |
| #define fd_set_dma_mode(mode) fd_ops->fd_set_dma_mode(FLOPPY_DMA, mode) |
| #define fd_set_dma_addr(addr) fd_ops->fd_set_dma_addr(FLOPPY_DMA, \ |
| virt_to_bus(addr)) |
| #define fd_set_dma_count(count) fd_ops->fd_set_dma_count(FLOPPY_DMA,count) |
| #define fd_get_dma_residue() fd_ops->fd_get_dma_residue(FLOPPY_DMA) |
| |
| #define fd_enable_irq() fd_ops->fd_enable_irq(FLOPPY_IRQ) |
| #define fd_disable_irq() fd_ops->fd_disable_irq(FLOPPY_IRQ) |
| #define fd_request_irq() request_irq(FLOPPY_IRQ, floppy_interrupt, \ |
| SA_INTERRUPT | SA_SAMPLE_RANDOM, \ |
| "floppy", NULL) |
| #define fd_free_irq() free_irq(FLOPPY_IRQ, NULL); |
| #define fd_dma_mem_alloc(size) fd_ops->fd_dma_mem_alloc(size) |
| #define fd_dma_mem_free(mem,size) fd_ops->fd_dma_mem_free(mem,size) |
| #define fd_drive_type(n) fd_ops->fd_drive_type(n) |
| #define fd_cacheflush(addr,size) dma_cache_wback_inv(addr,size) |
| |
| #define MAX_BUFFER_SECTORS 24 |
| |
| |
| /* |
| * And on Mips's the CMOS info fails also ... |
| * |
| * FIXME: This information should come from the ARC configuration tree |
| * or whereever a particular machine has stored this ... |
| */ |
| #define FLOPPY0_TYPE fd_drive_type(0) |
| #define FLOPPY1_TYPE fd_drive_type(1) |
| |
| #define FDC1 fd_ops->fd_getfdaddr1(); |
| |
| #define N_FDC 1 /* do you *really* want a second controller? */ |
| #define N_DRIVE 8 |
| |
| #define FLOPPY_MOTOR_MASK 0xf0 |
| |
| /* |
| * The DMA channel used by the floppy controller cannot access data at |
| * addresses >= 16MB |
| * |
| * Went back to the 1MB limit, as some people had problems with the floppy |
| * driver otherwise. It doesn't matter much for performance anyway, as most |
| * floppy accesses go through the track buffer. |
| * |
| * On MIPSes using vdma, this actually means that *all* transfers go thru |
| * the * track buffer since 0x1000000 is always smaller than KSEG0/1. |
| * Actually this needs to be a bit more complicated since the so much different |
| * hardware available with MIPS CPUs ... |
| */ |
| #define CROSS_64KB(a,s) ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64) |
| |
| #define EXTRA_FLOPPY_PARAMS |
| |
| #endif /* _ASM_FLOPPY_H */ |