mirror of https://gitee.com/openkylin/linux.git
858 lines
21 KiB
C
858 lines
21 KiB
C
/* $Id: floppy.h,v 1.32 2001/10/26 17:59:36 davem Exp $
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* asm-sparc64/floppy.h: Sparc specific parts of the Floppy driver.
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*
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* Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
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* Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
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*
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* Ultra/PCI support added: Sep 1997 Eddie C. Dost (ecd@skynet.be)
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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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#include <linux/init.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <asm/system.h>
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#include <asm/idprom.h>
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#include <asm/oplib.h>
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#include <asm/auxio.h>
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#include <asm/sbus.h>
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#include <asm/irq.h>
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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 sbus_dev *floppy_sdev = NULL;
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struct sun_floppy_ops {
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unsigned char (*fd_inb) (unsigned long port);
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void (*fd_outb) (unsigned char value, unsigned long port);
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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(port) sun_fdops.fd_inb(port)
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#define fd_outb(value,port) sun_fdops.fd_outb(value,port)
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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_cacheflush(addr, size) /* nothing... */
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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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static int FLOPPY_MOTOR_MASK = 0x10;
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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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/* 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 port)
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{
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udelay(5);
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switch(port & 7) {
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default:
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printk("floppy: Asked to read unknown port %lx\n", port);
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panic("floppy: Port bolixed.");
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case 4: /* FD_STATUS */
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return sbus_readb(&sun_fdc->status_82077) & ~STATUS_DMA;
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case 5: /* FD_DATA */
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return sbus_readb(&sun_fdc->data_82077);
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case 7: /* 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 port)
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{
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udelay(5);
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switch(port & 7) {
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default:
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printk("floppy: Asked to write to unknown port %lx\n", port);
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panic("floppy: Port bolixed.");
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case 2: /* 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 5: /* FD_DATA */
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sbus_writeb(value, &sun_fdc->data_82077);
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break;
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case 7: /* FD_DCR */
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sbus_writeb(value, &sun_fdc->dcr_82077);
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break;
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case 4: /* FD_STATUS */
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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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if (pdma_base) {
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mmu_unlockarea(pdma_base, pdma_areasize);
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pdma_base = NULL;
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}
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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_vaddr = mmu_lockarea(pdma_vaddr, pdma_size);
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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, struct pt_regs *regs)
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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, regs);
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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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IRQF_DISABLED, "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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#ifdef CONFIG_PCI
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#include <asm/ebus.h>
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#include <asm/isa.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 pci_dev *sun_pci_ebus_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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extern irqreturn_t floppy_interrupt(int irq, void *dev_id, struct pt_regs *regs);
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static unsigned char sun_pci_fd_inb(unsigned long port)
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{
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udelay(5);
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return inb(port);
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}
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static void sun_pci_fd_outb(unsigned char val, unsigned long port)
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{
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udelay(5);
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outb(val, port);
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}
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static void sun_pci_fd_broken_outb(unsigned char val, unsigned long port)
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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 (port == ((unsigned long)sun_fdc) + 2) {
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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, port);
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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 port)
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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 (port == ((unsigned long)sun_fdc) + 2) {
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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, port);
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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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pci_map_single(sun_pci_ebus_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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pci_unmap_single(sun_pci_ebus_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 = PCI_DMA_TODEVICE;
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else
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sun_pci_dma_pending.direction = PCI_DMA_FROMDEVICE;
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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, NULL);
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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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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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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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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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while (!((status = inb(MSR)) & 0x80) && --timeout)
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udelay(100);
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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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return result[0];
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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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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);
|
|
} while ((mask != 0x0f) && --timeout);
|
|
}
|
|
|
|
static int sun_pci_fd_test_drive(unsigned long port, int drive)
|
|
{
|
|
unsigned char status, data;
|
|
int timeout = 1000;
|
|
int ready;
|
|
|
|
sun_pci_fd_reset(port);
|
|
|
|
data = (0x10 << drive) | 0x0c | drive;
|
|
sun_pci_fd_out_byte(port, data, DOR);
|
|
|
|
sun_pci_fd_out_byte(port, 0x07, FIFO);
|
|
sun_pci_fd_out_byte(port, drive & 0x03, FIFO);
|
|
|
|
do {
|
|
udelay(100);
|
|
status = sun_pci_fd_sensei(port);
|
|
} while (((status & 0xc0) == 0x80) && --timeout);
|
|
|
|
if (!timeout)
|
|
ready = 0;
|
|
else
|
|
ready = (status & 0x10) ? 0 : 1;
|
|
|
|
sun_pci_fd_reset(port);
|
|
return ready;
|
|
}
|
|
#undef FIFO
|
|
#undef MSR
|
|
#undef DOR
|
|
|
|
#endif /* CONFIG_PCI */
|
|
|
|
#ifdef CONFIG_PCI
|
|
static int __init ebus_fdthree_p(struct linux_ebus_device *edev)
|
|
{
|
|
if (!strcmp(edev->prom_node->name, "fdthree"))
|
|
return 1;
|
|
if (!strcmp(edev->prom_node->name, "floppy")) {
|
|
char *compat;
|
|
|
|
compat = of_get_property(edev->prom_node,
|
|
"compatible", NULL);
|
|
if (compat && !strcmp(compat, "fdthree"))
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PCI
|
|
#undef ISA_FLOPPY_WORKS
|
|
|
|
#ifdef ISA_FLOPPY_WORKS
|
|
static unsigned long __init isa_floppy_init(void)
|
|
{
|
|
struct sparc_isa_bridge *isa_br;
|
|
struct sparc_isa_device *isa_dev = NULL;
|
|
|
|
for_each_isa(isa_br) {
|
|
for_each_isadev(isa_dev, isa_br) {
|
|
if (!strcmp(isa_dev->prom_node->name, "dma")) {
|
|
struct sparc_isa_device *child =
|
|
isa_dev->child;
|
|
|
|
while (child) {
|
|
if (!strcmp(child->prom_node->name,
|
|
"floppy")) {
|
|
isa_dev = child;
|
|
goto isa_done;
|
|
}
|
|
child = child->next;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
isa_done:
|
|
if (!isa_dev)
|
|
return 0;
|
|
|
|
/* We could use DMA on devices behind the ISA bridge, but...
|
|
*
|
|
* There is a slight problem. Normally on x86 kit the x86 processor
|
|
* delays I/O port instructions when the ISA bus "dma in progress"
|
|
* signal is active. Well, sparc64 systems do not monitor this
|
|
* signal thus we would need to block all I/O port accesses in software
|
|
* when a dma transfer is active for some device.
|
|
*/
|
|
|
|
sun_fdc = (struct sun_flpy_controller *)isa_dev->resource.start;
|
|
FLOPPY_IRQ = isa_dev->irq;
|
|
|
|
sun_fdops.fd_inb = sun_pci_fd_inb;
|
|
sun_fdops.fd_outb = sun_pci_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;
|
|
|
|
/* Floppy eject is manual. Actually, could determine this
|
|
* via presence of 'manual' property in OBP node.
|
|
*/
|
|
sun_fdops.fd_eject = sun_pci_fd_eject;
|
|
|
|
fdc_status = (unsigned long) &sun_fdc->status_82077;
|
|
FLOPPY_MOTOR_MASK = 0xf0;
|
|
|
|
allowed_drive_mask = 0;
|
|
sun_floppy_types[0] = 0;
|
|
sun_floppy_types[1] = 4;
|
|
|
|
sun_pci_broken_drive = 1;
|
|
sun_fdops.fd_outb = sun_pci_fd_broken_outb;
|
|
|
|
return sun_floppy_types[0];
|
|
}
|
|
#endif /* ISA_FLOPPY_WORKS */
|
|
|
|
#endif
|
|
|
|
static unsigned long __init sun_floppy_init(void)
|
|
{
|
|
char state[128];
|
|
struct sbus_bus *bus;
|
|
struct sbus_dev *sdev = NULL;
|
|
static int initialized = 0;
|
|
|
|
if (initialized)
|
|
return sun_floppy_types[0];
|
|
initialized = 1;
|
|
|
|
for_all_sbusdev (sdev, bus) {
|
|
if (!strcmp(sdev->prom_name, "SUNW,fdtwo"))
|
|
break;
|
|
}
|
|
if(sdev) {
|
|
floppy_sdev = sdev;
|
|
FLOPPY_IRQ = sdev->irqs[0];
|
|
} else {
|
|
#ifdef CONFIG_PCI
|
|
struct linux_ebus *ebus;
|
|
struct linux_ebus_device *edev = NULL;
|
|
unsigned long config = 0;
|
|
void __iomem *auxio_reg;
|
|
char *state_prop;
|
|
|
|
for_each_ebus(ebus) {
|
|
for_each_ebusdev(edev, ebus) {
|
|
if (ebus_fdthree_p(edev))
|
|
goto ebus_done;
|
|
}
|
|
}
|
|
ebus_done:
|
|
if (!edev) {
|
|
#ifdef ISA_FLOPPY_WORKS
|
|
return isa_floppy_init();
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
state_prop = of_get_property(edev->prom_node, "status", NULL);
|
|
if (state_prop && !strncmp(state_prop, "disabled", 8))
|
|
return 0;
|
|
|
|
FLOPPY_IRQ = edev->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 *) edev->resource[2].start;
|
|
writel(readl(auxio_reg)|0x2, auxio_reg);
|
|
|
|
sun_pci_ebus_dev = ebus->self;
|
|
|
|
spin_lock_init(&sun_pci_fd_ebus_dma.lock);
|
|
|
|
/* XXX ioremap */
|
|
sun_pci_fd_ebus_dma.regs = (void __iomem *)
|
|
edev->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 *)edev->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;
|
|
FLOPPY_MOTOR_MASK = 0xf0;
|
|
|
|
/*
|
|
* 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).
|
|
*/
|
|
for_each_ebus(ebus) {
|
|
for_each_ebusdev(edev, ebus) {
|
|
if (!strcmp(edev->prom_node->name, "ecpp")) {
|
|
config = edev->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];
|
|
#else
|
|
return 0;
|
|
#endif
|
|
}
|
|
prom_getproperty(sdev->prom_node, "status", state, sizeof(state));
|
|
if(!strncmp(state, "disabled", 8))
|
|
return 0;
|
|
|
|
/*
|
|
* We cannot do sbus_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 *)
|
|
(sdev->resource[0].start +
|
|
((sdev->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
|
|
|
|
#endif /* !(__ASM_SPARC64_FLOPPY_H) */
|