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779 lines
19 KiB
779 lines
19 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* floppy.h: Sparc specific parts of the Floppy driver. |
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* |
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* Copyright (C) 1996, 2007, 2008 David S. Miller ([email protected]) |
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* Copyright (C) 1997 Jakub Jelinek ([email protected]) |
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* |
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* Ultra/PCI support added: Sep 1997 Eddie C. Dost ([email protected]) |
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*/ |
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|
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#ifndef __ASM_SPARC64_FLOPPY_H |
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#define __ASM_SPARC64_FLOPPY_H |
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|
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#include <linux/of.h> |
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#include <linux/of_device.h> |
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#include <linux/dma-mapping.h> |
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|
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#include <asm/auxio.h> |
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|
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/* |
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* Define this to enable exchanging drive 0 and 1 if only drive 1 is |
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* probed on PCI machines. |
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*/ |
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#undef PCI_FDC_SWAP_DRIVES |
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/* References: |
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* 1) Netbsd Sun floppy driver. |
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* 2) NCR 82077 controller manual |
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* 3) Intel 82077 controller manual |
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*/ |
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struct sun_flpy_controller { |
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volatile unsigned char status1_82077; /* Auxiliary Status reg. 1 */ |
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volatile unsigned char status2_82077; /* Auxiliary Status reg. 2 */ |
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volatile unsigned char dor_82077; /* Digital Output reg. */ |
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volatile unsigned char tapectl_82077; /* Tape Control reg */ |
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volatile unsigned char status_82077; /* Main Status Register. */ |
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#define drs_82077 status_82077 /* Digital Rate Select reg. */ |
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volatile unsigned char data_82077; /* Data fifo. */ |
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volatile unsigned char ___unused; |
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volatile unsigned char dir_82077; /* Digital Input reg. */ |
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#define dcr_82077 dir_82077 /* Config Control reg. */ |
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}; |
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/* You'll only ever find one controller on an Ultra anyways. */ |
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static struct sun_flpy_controller *sun_fdc = (struct sun_flpy_controller *)-1; |
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unsigned long fdc_status; |
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static struct platform_device *floppy_op = NULL; |
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struct sun_floppy_ops { |
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unsigned char (*fd_inb) (unsigned long port, unsigned int reg); |
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void (*fd_outb) (unsigned char value, unsigned long base, |
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unsigned int reg); |
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void (*fd_enable_dma) (void); |
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void (*fd_disable_dma) (void); |
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void (*fd_set_dma_mode) (int); |
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void (*fd_set_dma_addr) (char *); |
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void (*fd_set_dma_count) (int); |
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unsigned int (*get_dma_residue) (void); |
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int (*fd_request_irq) (void); |
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void (*fd_free_irq) (void); |
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int (*fd_eject) (int); |
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}; |
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static struct sun_floppy_ops sun_fdops; |
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#define fd_inb(base, reg) sun_fdops.fd_inb(base, reg) |
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#define fd_outb(value, base, reg) sun_fdops.fd_outb(value, base, reg) |
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#define fd_enable_dma() sun_fdops.fd_enable_dma() |
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#define fd_disable_dma() sun_fdops.fd_disable_dma() |
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#define fd_request_dma() (0) /* nothing... */ |
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#define fd_free_dma() /* nothing... */ |
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#define fd_clear_dma_ff() /* nothing... */ |
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#define fd_set_dma_mode(mode) sun_fdops.fd_set_dma_mode(mode) |
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#define fd_set_dma_addr(addr) sun_fdops.fd_set_dma_addr(addr) |
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#define fd_set_dma_count(count) sun_fdops.fd_set_dma_count(count) |
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#define get_dma_residue(x) sun_fdops.get_dma_residue() |
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#define fd_request_irq() sun_fdops.fd_request_irq() |
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#define fd_free_irq() sun_fdops.fd_free_irq() |
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#define fd_eject(drive) sun_fdops.fd_eject(drive) |
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|
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/* Super paranoid... */ |
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#undef HAVE_DISABLE_HLT |
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static int sun_floppy_types[2] = { 0, 0 }; |
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|
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/* Here is where we catch the floppy driver trying to initialize, |
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* therefore this is where we call the PROM device tree probing |
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* routine etc. on the Sparc. |
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*/ |
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#define FLOPPY0_TYPE sun_floppy_init() |
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#define FLOPPY1_TYPE sun_floppy_types[1] |
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#define FDC1 ((unsigned long)sun_fdc) |
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#define N_FDC 1 |
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#define N_DRIVE 8 |
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/* No 64k boundary crossing problems on the Sparc. */ |
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#define CROSS_64KB(a,s) (0) |
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static unsigned char sun_82077_fd_inb(unsigned long base, unsigned int reg) |
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{ |
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udelay(5); |
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switch (reg) { |
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default: |
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printk("floppy: Asked to read unknown port %x\n", reg); |
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panic("floppy: Port bolixed."); |
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case FD_STATUS: |
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return sbus_readb(&sun_fdc->status_82077) & ~STATUS_DMA; |
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case FD_DATA: |
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return sbus_readb(&sun_fdc->data_82077); |
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case FD_DIR: |
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/* XXX: Is DCL on 0x80 in sun4m? */ |
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return sbus_readb(&sun_fdc->dir_82077); |
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} |
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panic("sun_82072_fd_inb: How did I get here?"); |
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} |
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static void sun_82077_fd_outb(unsigned char value, unsigned long base, |
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unsigned int reg) |
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{ |
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udelay(5); |
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switch (reg) { |
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default: |
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printk("floppy: Asked to write to unknown port %x\n", reg); |
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panic("floppy: Port bolixed."); |
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case FD_DOR: |
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/* Happily, the 82077 has a real DOR register. */ |
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sbus_writeb(value, &sun_fdc->dor_82077); |
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break; |
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case FD_DATA: |
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sbus_writeb(value, &sun_fdc->data_82077); |
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break; |
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case FD_DCR: |
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sbus_writeb(value, &sun_fdc->dcr_82077); |
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break; |
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case FD_DSR: |
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sbus_writeb(value, &sun_fdc->status_82077); |
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break; |
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} |
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return; |
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} |
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/* For pseudo-dma (Sun floppy drives have no real DMA available to |
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* them so we must eat the data fifo bytes directly ourselves) we have |
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* three state variables. doing_pdma tells our inline low-level |
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* assembly floppy interrupt entry point whether it should sit and eat |
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* bytes from the fifo or just transfer control up to the higher level |
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* floppy interrupt c-code. I tried very hard but I could not get the |
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* pseudo-dma to work in c-code without getting many overruns and |
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* underruns. If non-zero, doing_pdma encodes the direction of |
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* the transfer for debugging. 1=read 2=write |
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*/ |
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unsigned char *pdma_vaddr; |
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unsigned long pdma_size; |
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volatile int doing_pdma = 0; |
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/* This is software state */ |
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char *pdma_base = NULL; |
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unsigned long pdma_areasize; |
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/* Common routines to all controller types on the Sparc. */ |
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static void sun_fd_disable_dma(void) |
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{ |
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doing_pdma = 0; |
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pdma_base = NULL; |
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} |
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static void sun_fd_set_dma_mode(int mode) |
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{ |
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switch(mode) { |
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case DMA_MODE_READ: |
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doing_pdma = 1; |
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break; |
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case DMA_MODE_WRITE: |
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doing_pdma = 2; |
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break; |
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default: |
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printk("Unknown dma mode %d\n", mode); |
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panic("floppy: Giving up..."); |
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} |
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} |
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static void sun_fd_set_dma_addr(char *buffer) |
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{ |
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pdma_vaddr = buffer; |
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} |
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static void sun_fd_set_dma_count(int length) |
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{ |
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pdma_size = length; |
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} |
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static void sun_fd_enable_dma(void) |
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{ |
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pdma_base = pdma_vaddr; |
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pdma_areasize = pdma_size; |
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} |
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irqreturn_t sparc_floppy_irq(int irq, void *dev_cookie) |
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{ |
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if (likely(doing_pdma)) { |
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void __iomem *stat = (void __iomem *) fdc_status; |
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unsigned char *vaddr = pdma_vaddr; |
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unsigned long size = pdma_size; |
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u8 val; |
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while (size) { |
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val = readb(stat); |
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if (unlikely(!(val & 0x80))) { |
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pdma_vaddr = vaddr; |
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pdma_size = size; |
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return IRQ_HANDLED; |
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} |
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if (unlikely(!(val & 0x20))) { |
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pdma_vaddr = vaddr; |
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pdma_size = size; |
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doing_pdma = 0; |
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goto main_interrupt; |
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} |
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if (val & 0x40) { |
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/* read */ |
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*vaddr++ = readb(stat + 1); |
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} else { |
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unsigned char data = *vaddr++; |
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/* write */ |
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writeb(data, stat + 1); |
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} |
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size--; |
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} |
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pdma_vaddr = vaddr; |
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pdma_size = size; |
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/* Send Terminal Count pulse to floppy controller. */ |
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val = readb(auxio_register); |
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val |= AUXIO_AUX1_FTCNT; |
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writeb(val, auxio_register); |
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val &= ~AUXIO_AUX1_FTCNT; |
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writeb(val, auxio_register); |
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doing_pdma = 0; |
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} |
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main_interrupt: |
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return floppy_interrupt(irq, dev_cookie); |
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} |
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static int sun_fd_request_irq(void) |
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{ |
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static int once = 0; |
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int error; |
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if(!once) { |
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once = 1; |
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error = request_irq(FLOPPY_IRQ, sparc_floppy_irq, |
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0, "floppy", NULL); |
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return ((error == 0) ? 0 : -1); |
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} |
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return 0; |
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} |
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static void sun_fd_free_irq(void) |
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{ |
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} |
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static unsigned int sun_get_dma_residue(void) |
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{ |
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/* XXX This isn't really correct. XXX */ |
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return 0; |
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} |
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static int sun_fd_eject(int drive) |
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{ |
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set_dor(0x00, 0xff, 0x90); |
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udelay(500); |
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set_dor(0x00, 0x6f, 0x00); |
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udelay(500); |
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return 0; |
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} |
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#include <asm/ebus_dma.h> |
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#include <asm/ns87303.h> |
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static struct ebus_dma_info sun_pci_fd_ebus_dma; |
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static struct device *sun_floppy_dev; |
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static int sun_pci_broken_drive = -1; |
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struct sun_pci_dma_op { |
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unsigned int addr; |
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int len; |
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int direction; |
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char *buf; |
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}; |
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static struct sun_pci_dma_op sun_pci_dma_current = { -1U, 0, 0, NULL}; |
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static struct sun_pci_dma_op sun_pci_dma_pending = { -1U, 0, 0, NULL}; |
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irqreturn_t floppy_interrupt(int irq, void *dev_id); |
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static unsigned char sun_pci_fd_inb(unsigned long base, unsigned int reg) |
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{ |
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udelay(5); |
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return inb(base + reg); |
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} |
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static void sun_pci_fd_outb(unsigned char val, unsigned long base, |
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unsigned int reg) |
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{ |
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udelay(5); |
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outb(val, base + reg); |
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} |
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static void sun_pci_fd_broken_outb(unsigned char val, unsigned long base, |
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unsigned int reg) |
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{ |
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udelay(5); |
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/* |
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* XXX: Due to SUN's broken floppy connector on AX and AXi |
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* we need to turn on MOTOR_0 also, if the floppy is |
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* jumpered to DS1 (like most PC floppies are). I hope |
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* this does not hurt correct hardware like the AXmp. |
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* (Eddie, Sep 12 1998). |
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*/ |
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if (reg == FD_DOR) { |
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if (((val & 0x03) == sun_pci_broken_drive) && (val & 0x20)) { |
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val |= 0x10; |
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} |
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} |
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outb(val, base + reg); |
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} |
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#ifdef PCI_FDC_SWAP_DRIVES |
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static void sun_pci_fd_lde_broken_outb(unsigned char val, unsigned long base, |
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unsigned int reg) |
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{ |
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udelay(5); |
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/* |
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* XXX: Due to SUN's broken floppy connector on AX and AXi |
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* we need to turn on MOTOR_0 also, if the floppy is |
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* jumpered to DS1 (like most PC floppies are). I hope |
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* this does not hurt correct hardware like the AXmp. |
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* (Eddie, Sep 12 1998). |
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*/ |
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if (reg == FD_DOR) { |
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if (((val & 0x03) == sun_pci_broken_drive) && (val & 0x10)) { |
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val &= ~(0x03); |
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val |= 0x21; |
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} |
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} |
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outb(val, base + reg); |
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} |
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#endif /* PCI_FDC_SWAP_DRIVES */ |
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static void sun_pci_fd_enable_dma(void) |
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{ |
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BUG_ON((NULL == sun_pci_dma_pending.buf) || |
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(0 == sun_pci_dma_pending.len) || |
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(0 == sun_pci_dma_pending.direction)); |
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sun_pci_dma_current.buf = sun_pci_dma_pending.buf; |
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sun_pci_dma_current.len = sun_pci_dma_pending.len; |
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sun_pci_dma_current.direction = sun_pci_dma_pending.direction; |
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sun_pci_dma_pending.buf = NULL; |
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sun_pci_dma_pending.len = 0; |
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sun_pci_dma_pending.direction = 0; |
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sun_pci_dma_pending.addr = -1U; |
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sun_pci_dma_current.addr = |
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dma_map_single(sun_floppy_dev, |
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sun_pci_dma_current.buf, |
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sun_pci_dma_current.len, |
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sun_pci_dma_current.direction); |
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ebus_dma_enable(&sun_pci_fd_ebus_dma, 1); |
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if (ebus_dma_request(&sun_pci_fd_ebus_dma, |
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sun_pci_dma_current.addr, |
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sun_pci_dma_current.len)) |
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BUG(); |
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} |
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static void sun_pci_fd_disable_dma(void) |
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{ |
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ebus_dma_enable(&sun_pci_fd_ebus_dma, 0); |
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if (sun_pci_dma_current.addr != -1U) |
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dma_unmap_single(sun_floppy_dev, |
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sun_pci_dma_current.addr, |
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sun_pci_dma_current.len, |
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sun_pci_dma_current.direction); |
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sun_pci_dma_current.addr = -1U; |
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} |
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static void sun_pci_fd_set_dma_mode(int mode) |
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{ |
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if (mode == DMA_MODE_WRITE) |
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sun_pci_dma_pending.direction = DMA_TO_DEVICE; |
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else |
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sun_pci_dma_pending.direction = DMA_FROM_DEVICE; |
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ebus_dma_prepare(&sun_pci_fd_ebus_dma, mode != DMA_MODE_WRITE); |
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} |
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static void sun_pci_fd_set_dma_count(int length) |
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{ |
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sun_pci_dma_pending.len = length; |
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} |
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static void sun_pci_fd_set_dma_addr(char *buffer) |
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{ |
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sun_pci_dma_pending.buf = buffer; |
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} |
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static unsigned int sun_pci_get_dma_residue(void) |
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{ |
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return ebus_dma_residue(&sun_pci_fd_ebus_dma); |
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} |
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static int sun_pci_fd_request_irq(void) |
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{ |
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return ebus_dma_irq_enable(&sun_pci_fd_ebus_dma, 1); |
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} |
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static void sun_pci_fd_free_irq(void) |
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{ |
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ebus_dma_irq_enable(&sun_pci_fd_ebus_dma, 0); |
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} |
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static int sun_pci_fd_eject(int drive) |
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{ |
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return -EINVAL; |
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} |
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void sun_pci_fd_dma_callback(struct ebus_dma_info *p, int event, void *cookie) |
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{ |
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floppy_interrupt(0, NULL); |
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} |
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|
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/* |
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* Floppy probing, we'd like to use /dev/fd0 for a single Floppy on PCI, |
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* even if this is configured using DS1, thus looks like /dev/fd1 with |
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* the cabling used in Ultras. |
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*/ |
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#define DOR (port + 2) |
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#define MSR (port + 4) |
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#define FIFO (port + 5) |
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|
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static void sun_pci_fd_out_byte(unsigned long port, unsigned char val, |
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unsigned long reg) |
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{ |
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unsigned char status; |
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int timeout = 1000; |
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|
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while (!((status = inb(MSR)) & 0x80) && --timeout) |
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udelay(100); |
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outb(val, reg); |
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} |
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|
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static unsigned char sun_pci_fd_sensei(unsigned long port) |
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{ |
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unsigned char result[2] = { 0x70, 0x00 }; |
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unsigned char status; |
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int i = 0; |
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sun_pci_fd_out_byte(port, 0x08, FIFO); |
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do { |
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int timeout = 1000; |
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|
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while (!((status = inb(MSR)) & 0x80) && --timeout) |
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udelay(100); |
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|
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if (!timeout) |
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break; |
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if ((status & 0xf0) == 0xd0) |
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result[i++] = inb(FIFO); |
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else |
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break; |
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} while (i < 2); |
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|
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return result[0]; |
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} |
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|
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static void sun_pci_fd_reset(unsigned long port) |
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{ |
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unsigned char mask = 0x00; |
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unsigned char status; |
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int timeout = 10000; |
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|
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outb(0x80, MSR); |
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do { |
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status = sun_pci_fd_sensei(port); |
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if ((status & 0xc0) == 0xc0) |
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mask |= 1 << (status & 0x03); |
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else |
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udelay(100); |
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} while ((mask != 0x0f) && --timeout); |
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} |
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|
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static int sun_pci_fd_test_drive(unsigned long port, int drive) |
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{ |
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unsigned char status, data; |
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int timeout = 1000; |
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int ready; |
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|
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sun_pci_fd_reset(port); |
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|
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data = (0x10 << drive) | 0x0c | drive; |
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sun_pci_fd_out_byte(port, data, DOR); |
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|
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sun_pci_fd_out_byte(port, 0x07, FIFO); |
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sun_pci_fd_out_byte(port, drive & 0x03, FIFO); |
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|
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do { |
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udelay(100); |
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status = sun_pci_fd_sensei(port); |
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} while (((status & 0xc0) == 0x80) && --timeout); |
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|
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if (!timeout) |
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ready = 0; |
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else |
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ready = (status & 0x10) ? 0 : 1; |
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|
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sun_pci_fd_reset(port); |
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return ready; |
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} |
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#undef FIFO |
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#undef MSR |
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#undef DOR |
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|
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static int __init ebus_fdthree_p(struct device_node *dp) |
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{ |
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if (of_node_name_eq(dp, "fdthree")) |
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return 1; |
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if (of_node_name_eq(dp, "floppy")) { |
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const char *compat; |
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|
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compat = of_get_property(dp, "compatible", NULL); |
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if (compat && !strcmp(compat, "fdthree")) |
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return 1; |
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} |
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return 0; |
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} |
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|
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static unsigned long __init sun_floppy_init(void) |
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{ |
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static int initialized = 0; |
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struct device_node *dp; |
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struct platform_device *op; |
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const char *prop; |
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char state[128]; |
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|
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if (initialized) |
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return sun_floppy_types[0]; |
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initialized = 1; |
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|
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op = NULL; |
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|
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for_each_node_by_name(dp, "SUNW,fdtwo") { |
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if (!of_node_name_eq(dp->parent, "sbus")) |
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continue; |
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op = of_find_device_by_node(dp); |
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if (op) |
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break; |
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} |
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if (op) { |
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floppy_op = op; |
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FLOPPY_IRQ = op->archdata.irqs[0]; |
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} else { |
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struct device_node *ebus_dp; |
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void __iomem *auxio_reg; |
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const char *state_prop; |
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unsigned long config; |
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|
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dp = NULL; |
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for_each_node_by_name(ebus_dp, "ebus") { |
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for (dp = ebus_dp->child; dp; dp = dp->sibling) { |
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if (ebus_fdthree_p(dp)) |
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goto found_fdthree; |
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} |
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} |
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found_fdthree: |
|
if (!dp) |
|
return 0; |
|
|
|
op = of_find_device_by_node(dp); |
|
if (!op) |
|
return 0; |
|
|
|
state_prop = of_get_property(op->dev.of_node, "status", NULL); |
|
if (state_prop && !strncmp(state_prop, "disabled", 8)) |
|
return 0; |
|
|
|
FLOPPY_IRQ = op->archdata.irqs[0]; |
|
|
|
/* Make sure the high density bit is set, some systems |
|
* (most notably Ultra5/Ultra10) come up with it clear. |
|
*/ |
|
auxio_reg = (void __iomem *) op->resource[2].start; |
|
writel(readl(auxio_reg)|0x2, auxio_reg); |
|
|
|
sun_floppy_dev = &op->dev; |
|
|
|
spin_lock_init(&sun_pci_fd_ebus_dma.lock); |
|
|
|
/* XXX ioremap */ |
|
sun_pci_fd_ebus_dma.regs = (void __iomem *) |
|
op->resource[1].start; |
|
if (!sun_pci_fd_ebus_dma.regs) |
|
return 0; |
|
|
|
sun_pci_fd_ebus_dma.flags = (EBUS_DMA_FLAG_USE_EBDMA_HANDLER | |
|
EBUS_DMA_FLAG_TCI_DISABLE); |
|
sun_pci_fd_ebus_dma.callback = sun_pci_fd_dma_callback; |
|
sun_pci_fd_ebus_dma.client_cookie = NULL; |
|
sun_pci_fd_ebus_dma.irq = FLOPPY_IRQ; |
|
strcpy(sun_pci_fd_ebus_dma.name, "floppy"); |
|
if (ebus_dma_register(&sun_pci_fd_ebus_dma)) |
|
return 0; |
|
|
|
/* XXX ioremap */ |
|
sun_fdc = (struct sun_flpy_controller *) op->resource[0].start; |
|
|
|
sun_fdops.fd_inb = sun_pci_fd_inb; |
|
sun_fdops.fd_outb = sun_pci_fd_outb; |
|
|
|
can_use_virtual_dma = use_virtual_dma = 0; |
|
sun_fdops.fd_enable_dma = sun_pci_fd_enable_dma; |
|
sun_fdops.fd_disable_dma = sun_pci_fd_disable_dma; |
|
sun_fdops.fd_set_dma_mode = sun_pci_fd_set_dma_mode; |
|
sun_fdops.fd_set_dma_addr = sun_pci_fd_set_dma_addr; |
|
sun_fdops.fd_set_dma_count = sun_pci_fd_set_dma_count; |
|
sun_fdops.get_dma_residue = sun_pci_get_dma_residue; |
|
|
|
sun_fdops.fd_request_irq = sun_pci_fd_request_irq; |
|
sun_fdops.fd_free_irq = sun_pci_fd_free_irq; |
|
|
|
sun_fdops.fd_eject = sun_pci_fd_eject; |
|
|
|
fdc_status = (unsigned long) &sun_fdc->status_82077; |
|
|
|
/* |
|
* XXX: Find out on which machines this is really needed. |
|
*/ |
|
if (1) { |
|
sun_pci_broken_drive = 1; |
|
sun_fdops.fd_outb = sun_pci_fd_broken_outb; |
|
} |
|
|
|
allowed_drive_mask = 0; |
|
if (sun_pci_fd_test_drive((unsigned long)sun_fdc, 0)) |
|
sun_floppy_types[0] = 4; |
|
if (sun_pci_fd_test_drive((unsigned long)sun_fdc, 1)) |
|
sun_floppy_types[1] = 4; |
|
|
|
/* |
|
* Find NS87303 SuperIO config registers (through ecpp). |
|
*/ |
|
config = 0; |
|
for (dp = ebus_dp->child; dp; dp = dp->sibling) { |
|
if (of_node_name_eq(dp, "ecpp")) { |
|
struct platform_device *ecpp_op; |
|
|
|
ecpp_op = of_find_device_by_node(dp); |
|
if (ecpp_op) |
|
config = ecpp_op->resource[1].start; |
|
goto config_done; |
|
} |
|
} |
|
config_done: |
|
|
|
/* |
|
* Sanity check, is this really the NS87303? |
|
*/ |
|
switch (config & 0x3ff) { |
|
case 0x02e: |
|
case 0x15c: |
|
case 0x26e: |
|
case 0x398: |
|
break; |
|
default: |
|
config = 0; |
|
} |
|
|
|
if (!config) |
|
return sun_floppy_types[0]; |
|
|
|
/* Enable PC-AT mode. */ |
|
ns87303_modify(config, ASC, 0, 0xc0); |
|
|
|
#ifdef PCI_FDC_SWAP_DRIVES |
|
/* |
|
* If only Floppy 1 is present, swap drives. |
|
*/ |
|
if (!sun_floppy_types[0] && sun_floppy_types[1]) { |
|
/* |
|
* Set the drive exchange bit in FCR on NS87303, |
|
* make sure other bits are sane before doing so. |
|
*/ |
|
ns87303_modify(config, FER, FER_EDM, 0); |
|
ns87303_modify(config, ASC, ASC_DRV2_SEL, 0); |
|
ns87303_modify(config, FCR, 0, FCR_LDE); |
|
|
|
config = sun_floppy_types[0]; |
|
sun_floppy_types[0] = sun_floppy_types[1]; |
|
sun_floppy_types[1] = config; |
|
|
|
if (sun_pci_broken_drive != -1) { |
|
sun_pci_broken_drive = 1 - sun_pci_broken_drive; |
|
sun_fdops.fd_outb = sun_pci_fd_lde_broken_outb; |
|
} |
|
} |
|
#endif /* PCI_FDC_SWAP_DRIVES */ |
|
|
|
return sun_floppy_types[0]; |
|
} |
|
prop = of_get_property(op->dev.of_node, "status", NULL); |
|
if (prop && !strncmp(state, "disabled", 8)) |
|
return 0; |
|
|
|
/* |
|
* We cannot do of_ioremap here: it does request_region, |
|
* which the generic floppy driver tries to do once again. |
|
* But we must use the sdev resource values as they have |
|
* had parent ranges applied. |
|
*/ |
|
sun_fdc = (struct sun_flpy_controller *) |
|
(op->resource[0].start + |
|
((op->resource[0].flags & 0x1ffUL) << 32UL)); |
|
|
|
/* Last minute sanity check... */ |
|
if (sbus_readb(&sun_fdc->status1_82077) == 0xff) { |
|
sun_fdc = (struct sun_flpy_controller *)-1; |
|
return 0; |
|
} |
|
|
|
sun_fdops.fd_inb = sun_82077_fd_inb; |
|
sun_fdops.fd_outb = sun_82077_fd_outb; |
|
|
|
can_use_virtual_dma = use_virtual_dma = 1; |
|
sun_fdops.fd_enable_dma = sun_fd_enable_dma; |
|
sun_fdops.fd_disable_dma = sun_fd_disable_dma; |
|
sun_fdops.fd_set_dma_mode = sun_fd_set_dma_mode; |
|
sun_fdops.fd_set_dma_addr = sun_fd_set_dma_addr; |
|
sun_fdops.fd_set_dma_count = sun_fd_set_dma_count; |
|
sun_fdops.get_dma_residue = sun_get_dma_residue; |
|
|
|
sun_fdops.fd_request_irq = sun_fd_request_irq; |
|
sun_fdops.fd_free_irq = sun_fd_free_irq; |
|
|
|
sun_fdops.fd_eject = sun_fd_eject; |
|
|
|
fdc_status = (unsigned long) &sun_fdc->status_82077; |
|
|
|
/* Success... */ |
|
allowed_drive_mask = 0x01; |
|
sun_floppy_types[0] = 4; |
|
sun_floppy_types[1] = 0; |
|
|
|
return sun_floppy_types[0]; |
|
} |
|
|
|
#define EXTRA_FLOPPY_PARAMS |
|
|
|
static DEFINE_SPINLOCK(dma_spin_lock); |
|
|
|
#define claim_dma_lock() \ |
|
({ unsigned long flags; \ |
|
spin_lock_irqsave(&dma_spin_lock, flags); \ |
|
flags; \ |
|
}) |
|
|
|
#define release_dma_lock(__flags) \ |
|
spin_unlock_irqrestore(&dma_spin_lock, __flags); |
|
|
|
#endif /* !(__ASM_SPARC64_FLOPPY_H) */
|
|
|