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/* * 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 */ #ifndef __ASM_MIPS_FLOPPY_H #define __ASM_MIPS_FLOPPY_H #include <asm/bootinfo.h> #include <asm/jazz.h> #include <asm/jazzdma.h> #include <asm/mipsconfig.h> #include <asm/vector.h> #define fd_inb(port) feature->fd_inb(port) #define fd_outb(value,port) feature->fd_outb(value,port) #define fd_enable_dma() feature->fd_enable_dma() #define fd_disable_dma() feature->fd_disable_dma() #define fd_request_dma() feature->fd_request_dma() #define fd_free_dma() feature->fd_free_dma() #define fd_clear_dma_ff() feature->fd_clear_dma_ff() #define fd_set_dma_mode(mode) feature->fd_set_dma_mode(mode) #define fd_set_dma_addr(addr) feature->fd_set_dma_addr(virt_to_bus(addr)) #define fd_set_dma_count(count) feature->fd_set_dma_count(count) #define fd_get_dma_residue() feature->fd_get_dma_residue() #define fd_enable_irq() feature->fd_enable_irq() #define fd_disable_irq() feature->fd_disable_irq() #define fd_cacheflush(addr, size) feature->fd_cacheflush((void *)addr, size) #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 MAX_BUFFER_SECTORS 24 static unsigned long mips_dma_mem_alloc(unsigned long size) { int order = __get_order(size); unsigned long mem; mem = __get_dma_pages(GFP_KERNEL,order); if(!mem) return 0; if (boot_info.machtype == MACH_ACER_PICA_61 || boot_info.machtype == MACH_MIPS_MAGNUM_4000 || boot_info.machtype == MACH_OLIVETTI_M700) vdma_alloc(PHYSADDR(mem), size); return mem; } static void mips_dma_mem_free(unsigned long addr, unsigned long size) { if (boot_info.machtype == MACH_ACER_PICA_61 || boot_info.machtype == MACH_MIPS_MAGNUM_4000 || boot_info.machtype == MACH_OLIVETTI_M700) vdma_free(PHYSADDR(addr)); free_pages(addr, __get_order(size)); } #define fd_dma_mem_alloc(mem,size) mips_dma_mem_alloc(mem,size) #define fd_dma_mem_free(mem) mips_dma_mem_free(mem) /* * And on Mips's the CMOS info fails also ... * * FIXME: This information should come from the ARC configuration tree * or wherever a particular machine has stored this ... */ #define FLOPPY0_TYPE 4 /* this is wrong for the Olli M700, but who cares... */ #define FLOPPY1_TYPE 0 #define FDC1 ((boot_info.machtype == MACH_ACER_PICA_61 || \ boot_info.machtype == MACH_MIPS_MAGNUM_4000 || \ boot_info.machtype == MACH_OLIVETTI_M700) ? \ 0xe0003000 : 0x3f0) static int FDC2=-1; #define N_FDC 1 /* do you *really* want a second controller? */ #define N_DRIVE 8 /* * 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) #endif /* __ASM_MIPS_FLOPPY_H */ |