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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 | /* * 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_ALPHA_FLOPPY_H #define __ASM_ALPHA_FLOPPY_H #define fd_inb(port) inb_p(port) #define fd_outb(value,port) outb_p(value,port) #define fd_enable_dma() enable_dma(FLOPPY_DMA) #define fd_disable_dma() disable_dma(FLOPPY_DMA) #define fd_request_dma() request_dma(FLOPPY_DMA,"floppy") #define fd_free_dma() free_dma(FLOPPY_DMA) #define fd_clear_dma_ff() clear_dma_ff(FLOPPY_DMA) #define fd_set_dma_mode(mode) set_dma_mode(FLOPPY_DMA,mode) #define fd_set_dma_addr(addr) set_dma_addr(FLOPPY_DMA,virt_to_bus(addr)) #define fd_set_dma_count(count) set_dma_count(FLOPPY_DMA,count) #define fd_enable_irq() enable_irq(FLOPPY_IRQ) #define fd_disable_irq() disable_irq(FLOPPY_IRQ) #define fd_cacheflush(addr,size) /* nothing */ #define fd_request_irq() request_irq(FLOPPY_IRQ, floppy_interrupt,\ IRQF_DISABLED, "floppy", NULL) #define fd_free_irq() free_irq(FLOPPY_IRQ, NULL); #ifdef CONFIG_PCI #include <linux/pci.h> #define fd_dma_setup(addr,size,mode,io) alpha_fd_dma_setup(addr,size,mode,io) static __inline__ int alpha_fd_dma_setup(char *addr, unsigned long size, int mode, int io) { static unsigned long prev_size; static dma_addr_t bus_addr = 0; static char *prev_addr; static int prev_dir; int dir; dir = (mode != DMA_MODE_READ) ? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE; if (bus_addr && (addr != prev_addr || size != prev_size || dir != prev_dir)) { /* different from last time -- unmap prev */ pci_unmap_single(isa_bridge, bus_addr, prev_size, prev_dir); bus_addr = 0; } if (!bus_addr) /* need to map it */ bus_addr = pci_map_single(isa_bridge, addr, size, dir); /* remember this one as prev */ prev_addr = addr; prev_size = size; prev_dir = dir; fd_clear_dma_ff(); fd_cacheflush(addr, size); fd_set_dma_mode(mode); set_dma_addr(FLOPPY_DMA, bus_addr); fd_set_dma_count(size); virtual_dma_port = io; fd_enable_dma(); return 0; } #endif /* CONFIG_PCI */ __inline__ void virtual_dma_init(void) { /* Nothing to do on an Alpha */ } static int FDC1 = 0x3f0; static int FDC2 = -1; /* * Again, the CMOS information doesn't work on the alpha.. */ #define FLOPPY0_TYPE 6 #define FLOPPY1_TYPE 0 #define N_FDC 2 #define N_DRIVE 8 /* * Most Alphas have no problems with floppy DMA crossing 64k borders, * except for certain ones, like XL and RUFFIAN. * * However, the test is simple and fast, and this *is* floppy, after all, * so we do it for all platforms, just to make sure. * * This is advantageous in other circumstances as well, as in moving * about the PCI DMA windows and forcing the floppy to start doing * scatter-gather when it never had before, and there *is* a problem * on that platform... ;-} */ static inline unsigned long CROSS_64KB(void *a, unsigned long s) { unsigned long p = (unsigned long)a; return ((p + s - 1) ^ p) & ~0xffffUL; } #define EXTRA_FLOPPY_PARAMS #endif /* __ASM_ALPHA_FLOPPY_H */ |