| /* |
| * 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 |
| |
| #include <linux/config.h> |
| |
| #define fd_inb(port) inb_p(port) |
| #define fd_outb(port,value) outb_p(port,value) |
| |
| #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, \ |
| SA_INTERRUPT|SA_SAMPLE_RANDOM, \ |
| "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(NULL, bus_addr, prev_size, prev_dir); |
| bus_addr = 0; |
| } |
| |
| if (!bus_addr) /* need to map it */ |
| bus_addr = pci_map_single(NULL, 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 |
| |
| #define FLOPPY_MOTOR_MASK 0xf0 |
| |
| /* |
| * Most Alphas have no problems with floppy DMA crossing 64k borders, |
| * except for XL and RUFFIAN. They are also the only one with DMA |
| * limits, so we use that to test in the generic kernel. |
| */ |
| |
| #define __CROSS_64KB(a,s) \ |
| ({ unsigned long __s64 = (unsigned long)(a); \ |
| unsigned long __e64 = __s64 + (unsigned long)(s) - 1; \ |
| (__s64 ^ __e64) & ~0xfffful; }) |
| |
| #ifdef CONFIG_ALPHA_GENERIC |
| # define CROSS_64KB(a,s) (__CROSS_64KB(a,s) && ~alpha_mv.max_dma_address) |
| #else |
| # if defined(CONFIG_ALPHA_XL) || defined(CONFIG_ALPHA_RUFFIAN) || defined(CONFIG_ALPHA_NAUTILUS) |
| # define CROSS_64KB(a,s) __CROSS_64KB(a,s) |
| # else |
| # define CROSS_64KB(a,s) (0) |
| # endif |
| #endif |
| |
| #define EXTRA_FLOPPY_PARAMS |
| |
| #endif /* __ASM_ALPHA_FLOPPY_H */ |