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![David S. Miller](/assets/img/avatar_default.png)
The only real user was the assembler floppy interrupt handler, which does not need to be in assembly. This makes it so that there are less pieces of code which know about the internal layout of ivector_table[] and friends. Signed-off-by: David S. Miller <davem@davemloft.net>
811 lines
20 KiB
C
811 lines
20 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/config.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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extern irqreturn_t sparc_floppy_irq(int, void *, struct pt_regs *);
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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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SA_INTERRUPT, "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);
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} while ((mask != 0x0f) && --timeout);
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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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sun_pci_fd_reset(port);
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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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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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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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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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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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#endif /* CONFIG_PCI */
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#ifdef CONFIG_PCI
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|
static int __init ebus_fdthree_p(struct linux_ebus_device *edev)
|
|
{
|
|
if (!strcmp(edev->prom_name, "fdthree"))
|
|
return 1;
|
|
if (!strcmp(edev->prom_name, "floppy")) {
|
|
char compat[16];
|
|
prom_getstring(edev->prom_node,
|
|
"compatible",
|
|
compat, sizeof(compat));
|
|
compat[15] = '\0';
|
|
if (!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_name, "dma")) {
|
|
struct sparc_isa_device *child =
|
|
isa_dev->child;
|
|
|
|
while (child) {
|
|
if (!strcmp(child->prom_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;
|
|
|
|
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
|
|
}
|
|
|
|
prom_getproperty(edev->prom_node, "status",
|
|
state, sizeof(state));
|
|
if (!strncmp(state, "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_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 shure 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) */
|