diff options
Diffstat (limited to 'include/asm-ppc/floppy.h')
| -rw-r--r-- | include/asm-ppc/floppy.h | 178 |
1 files changed, 0 insertions, 178 deletions
diff --git a/include/asm-ppc/floppy.h b/include/asm-ppc/floppy.h deleted file mode 100644 index 7d9b3f4..0000000 --- a/include/asm-ppc/floppy.h +++ /dev/null @@ -1,178 +0,0 @@ -/* - * 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 - */ -#ifdef __KERNEL__ -#ifndef __ASM_PPC_FLOPPY_H -#define __ASM_PPC_FLOPPY_H - -#define fd_inb(port) inb_p(port) -#define fd_outb(value,port) outb_p(value,port) - -#define fd_disable_dma() fd_ops->_disable_dma(FLOPPY_DMA) -#define fd_free_dma() fd_ops->_free_dma(FLOPPY_DMA) -#define fd_get_dma_residue() fd_ops->_get_dma_residue(FLOPPY_DMA) -#define fd_dma_setup(addr, size, mode, io) fd_ops->_dma_setup(addr, size, mode, io) -#define fd_enable_irq() enable_irq(FLOPPY_IRQ) -#define fd_disable_irq() disable_irq(FLOPPY_IRQ) -#define fd_free_irq() free_irq(FLOPPY_IRQ, NULL); - -static int fd_request_dma(void); - -struct fd_dma_ops { - void (*_disable_dma)(unsigned int dmanr); - void (*_free_dma)(unsigned int dmanr); - int (*_get_dma_residue)(unsigned int dummy); - int (*_dma_setup)(char *addr, unsigned long size, int mode, int io); -}; - -static int virtual_dma_count; -static int virtual_dma_residue; -static char *virtual_dma_addr; -static int virtual_dma_mode; -static int doing_vdma; -static struct fd_dma_ops *fd_ops; - -static irqreturn_t floppy_hardint(int irq, void *dev_id) -{ - unsigned char st; - int lcount; - char *lptr; - - if (!doing_vdma) - return floppy_interrupt(irq, dev_id); - - - st = 1; - for (lcount=virtual_dma_count, lptr=virtual_dma_addr; - lcount; lcount--, lptr++) { - st=inb(virtual_dma_port+4) & 0xa0 ; - if (st != 0xa0) - break; - if (virtual_dma_mode) - outb_p(*lptr, virtual_dma_port+5); - else - *lptr = inb_p(virtual_dma_port+5); - } - virtual_dma_count = lcount; - virtual_dma_addr = lptr; - st = inb(virtual_dma_port+4); - - if (st == 0x20) - return IRQ_HANDLED; - if (!(st & 0x20)) { - virtual_dma_residue += virtual_dma_count; - virtual_dma_count=0; - doing_vdma = 0; - floppy_interrupt(irq, dev_id); - return IRQ_HANDLED; - } - return IRQ_HANDLED; -} - -static void vdma_disable_dma(unsigned int dummy) -{ - doing_vdma = 0; - virtual_dma_residue += virtual_dma_count; - virtual_dma_count=0; -} - -static void vdma_nop(unsigned int dummy) -{ -} - - -static int vdma_get_dma_residue(unsigned int dummy) -{ - return virtual_dma_count + virtual_dma_residue; -} - - -static int fd_request_irq(void) -{ - if (can_use_virtual_dma) - return request_irq(FLOPPY_IRQ, floppy_hardint, - IRQF_DISABLED, "floppy", NULL); - else - return request_irq(FLOPPY_IRQ, floppy_interrupt, - IRQF_DISABLED, "floppy", NULL); -} - -static int vdma_dma_setup(char *addr, unsigned long size, int mode, int io) -{ - doing_vdma = 1; - virtual_dma_port = io; - virtual_dma_mode = (mode == DMA_MODE_WRITE); - virtual_dma_addr = addr; - virtual_dma_count = size; - virtual_dma_residue = 0; - return 0; -} - -static int hard_dma_setup(char *addr, unsigned long size, int mode, int io) -{ - /* actual, physical DMA */ - doing_vdma = 0; - clear_dma_ff(FLOPPY_DMA); - set_dma_mode(FLOPPY_DMA,mode); - set_dma_addr(FLOPPY_DMA,(unsigned int)virt_to_bus(addr)); - set_dma_count(FLOPPY_DMA,size); - enable_dma(FLOPPY_DMA); - return 0; -} - -static struct fd_dma_ops real_dma_ops = -{ - ._disable_dma = disable_dma, - ._free_dma = free_dma, - ._get_dma_residue = get_dma_residue, - ._dma_setup = hard_dma_setup -}; - -static struct fd_dma_ops virt_dma_ops = -{ - ._disable_dma = vdma_disable_dma, - ._free_dma = vdma_nop, - ._get_dma_residue = vdma_get_dma_residue, - ._dma_setup = vdma_dma_setup -}; - -static int fd_request_dma() -{ - if (can_use_virtual_dma & 1) { - fd_ops = &virt_dma_ops; - return 0; - } - else { - fd_ops = &real_dma_ops; - return request_dma(FLOPPY_DMA, "floppy"); - } -} - -static int FDC1 = 0x3f0; -static int FDC2 = -1; - -/* - * Again, the CMOS information not available - */ -#define FLOPPY0_TYPE 6 -#define FLOPPY1_TYPE 0 - -#define N_FDC 2 /* Don't change this! */ -#define N_DRIVE 8 - -/* - * The PowerPC has no problems with floppy DMA crossing 64k borders. - */ -#define CROSS_64KB(a,s) (0) - -#endif /* __ASM_PPC_FLOPPY_H */ - -#define EXTRA_FLOPPY_PARAMS - -#endif /* __KERNEL__ */ |