home *** CD-ROM | disk | FTP | other *** search
- /*
- * 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);
-
- __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)
- # define CROSS_64KB(a,s) __CROSS_64KB(a,s)
- # else
- # define CROSS_64KB(a,s) (0)
- # endif
- #endif
-
- #endif /* __ASM_ALPHA_FLOPPY_H */
-