[mirror_ubuntu-eoan-kernel.git] / arch / sparc / include / asm / floppy_32.h

/* SPDX-License-Identifier: GPL-2.0 */
/* asm/floppy.h: Sparc specific parts of the Floppy driver.
 *
 * Copyright (C) 1995 David S. Miller (davem@davemloft.net)
 */

#ifndef __ASM_SPARC_FLOPPY_H
#define __ASM_SPARC_FLOPPY_H

#include <linux/of.h>
#include <linux/of_device.h>

#include <asm/pgtable.h>
#include <asm/idprom.h>
#include <asm/oplib.h>
#include <asm/auxio.h>
#include <asm/setup.h>
#include <asm/page.h>
#include <asm/irq.h>

/* We don't need no stinkin' I/O port allocation crap. */
#undef release_region
#undef request_region
#define release_region(X, Y)	do { } while(0)
#define request_region(X, Y, Z)	(1)

/* References:
 * 1) Netbsd Sun floppy driver.
 * 2) NCR 82077 controller manual
 * 3) Intel 82077 controller manual
 */
struct sun_flpy_controller {
	volatile unsigned char status_82072;  /* Main Status reg. */
#define dcr_82072              status_82072   /* Digital Control reg. */
#define status1_82077          status_82072   /* Auxiliary Status reg. 1 */

	volatile unsigned char data_82072;    /* Data fifo. */
#define status2_82077          data_82072     /* Auxiliary Status reg. 2 */

	volatile unsigned char dor_82077;     /* Digital Output reg. */
	volatile unsigned char tapectl_82077; /* What the? Tape control reg? */

	volatile unsigned char status_82077;  /* Main Status Register. */
#define drs_82077              status_82077   /* Digital Rate Select reg. */

	volatile unsigned char data_82077;    /* Data fifo. */
	volatile unsigned char ___unused;
	volatile unsigned char dir_82077;     /* Digital Input reg. */
#define dcr_82077              dir_82077      /* Config Control reg. */
};

/* You'll only ever find one controller on a SparcStation anyways. */
static struct sun_flpy_controller *sun_fdc = NULL;

struct sun_floppy_ops {
	unsigned char (*fd_inb)(int port);
	void (*fd_outb)(unsigned char value, int port);
};

static struct sun_floppy_ops sun_fdops;

#define fd_inb(port)              sun_fdops.fd_inb(port)
#define fd_outb(value,port)       sun_fdops.fd_outb(value,port)
#define fd_enable_dma()           sun_fd_enable_dma()
#define fd_disable_dma()          sun_fd_disable_dma()
#define fd_request_dma()          (0) /* nothing... */
#define fd_free_dma()             /* nothing... */
#define fd_clear_dma_ff()         /* nothing... */
#define fd_set_dma_mode(mode)     sun_fd_set_dma_mode(mode)
#define fd_set_dma_addr(addr)     sun_fd_set_dma_addr(addr)
#define fd_set_dma_count(count)   sun_fd_set_dma_count(count)
#define fd_enable_irq()           /* nothing... */
#define fd_disable_irq()          /* nothing... */
#define fd_cacheflush(addr, size) /* nothing... */
#define fd_request_irq()          sun_fd_request_irq()
#define fd_free_irq()             /* nothing... */
#if 0  /* P3: added by Alain, these cause a MMU corruption. 19960524 XXX */
#define fd_dma_mem_alloc(size)    ((unsigned long) vmalloc(size))
#define fd_dma_mem_free(addr,size) (vfree((void *)(addr)))
#endif

/* XXX This isn't really correct. XXX */
#define get_dma_residue(x)        (0)

#define FLOPPY0_TYPE  4
#define FLOPPY1_TYPE  0

/* Super paranoid... */
#undef HAVE_DISABLE_HLT

/* Here is where we catch the floppy driver trying to initialize,
 * therefore this is where we call the PROM device tree probing
 * routine etc. on the Sparc.
 */
#define FDC1                      sun_floppy_init()

#define N_FDC    1
#define N_DRIVE  8

/* No 64k boundary crossing problems on the Sparc. */
#define CROSS_64KB(a,s) (0)

/* Routines unique to each controller type on a Sun. */
static void sun_set_dor(unsigned char value, int fdc_82077)
{
	if (fdc_82077)
		sun_fdc->dor_82077 = value;
}

static unsigned char sun_read_dir(void)
{
	return sun_fdc->dir_82077;
}

static unsigned char sun_82072_fd_inb(int port)
{
	udelay(5);
	switch(port & 7) {
	default:
		printk("floppy: Asked to read unknown port %d\n", port);
		panic("floppy: Port bolixed.");
	case 4: /* FD_STATUS */
		return sun_fdc->status_82072 & ~STATUS_DMA;
	case 5: /* FD_DATA */
		return sun_fdc->data_82072;
	case 7: /* FD_DIR */
		return sun_read_dir();
	}
	panic("sun_82072_fd_inb: How did I get here?");
}

static void sun_82072_fd_outb(unsigned char value, int port)
{
	udelay(5);
	switch(port & 7) {
	default:
		printk("floppy: Asked to write to unknown port %d\n", port);
		panic("floppy: Port bolixed.");
	case 2: /* FD_DOR */
		sun_set_dor(value, 0);
		break;
	case 5: /* FD_DATA */
		sun_fdc->data_82072 = value;
		break;
	case 7: /* FD_DCR */
		sun_fdc->dcr_82072 = value;
		break;
	case 4: /* FD_STATUS */
		sun_fdc->status_82072 = value;
		break;
	}
	return;
}

static unsigned char sun_82077_fd_inb(int port)
{
	udelay(5);
	switch(port & 7) {
	default:
		printk("floppy: Asked to read unknown port %d\n", port);
		panic("floppy: Port bolixed.");
	case 0: /* FD_STATUS_0 */
		return sun_fdc->status1_82077;
	case 1: /* FD_STATUS_1 */
		return sun_fdc->status2_82077;
	case 2: /* FD_DOR */
		return sun_fdc->dor_82077;
	case 3: /* FD_TDR */
		return sun_fdc->tapectl_82077;
	case 4: /* FD_STATUS */
		return sun_fdc->status_82077 & ~STATUS_DMA;
	case 5: /* FD_DATA */
		return sun_fdc->data_82077;
	case 7: /* FD_DIR */
		return sun_read_dir();
	}
	panic("sun_82077_fd_inb: How did I get here?");
}

static void sun_82077_fd_outb(unsigned char value, int port)
{
	udelay(5);
	switch(port & 7) {
	default:
		printk("floppy: Asked to write to unknown port %d\n", port);
		panic("floppy: Port bolixed.");
	case 2: /* FD_DOR */
		sun_set_dor(value, 1);
		break;
	case 5: /* FD_DATA */
		sun_fdc->data_82077 = value;
		break;
	case 7: /* FD_DCR */
		sun_fdc->dcr_82077 = value;
		break;
	case 4: /* FD_STATUS */
		sun_fdc->status_82077 = value;
		break;
	case 3: /* FD_TDR */
		sun_fdc->tapectl_82077 = value;
		break;
	}
	return;
}

/* For pseudo-dma (Sun floppy drives have no real DMA available to
 * them so we must eat the data fifo bytes directly ourselves) we have
 * three state variables.  doing_pdma tells our inline low-level
 * assembly floppy interrupt entry point whether it should sit and eat
 * bytes from the fifo or just transfer control up to the higher level
 * floppy interrupt c-code.  I tried very hard but I could not get the
 * pseudo-dma to work in c-code without getting many overruns and
 * underruns.  If non-zero, doing_pdma encodes the direction of
 * the transfer for debugging.  1=read 2=write
 */

/* Common routines to all controller types on the Sparc. */
static inline void virtual_dma_init(void)
{
	/* nothing... */
}

static inline void sun_fd_disable_dma(void)
{
	doing_pdma = 0;
	pdma_base = NULL;
}

static inline void sun_fd_set_dma_mode(int mode)
{
	switch(mode) {
	case DMA_MODE_READ:
		doing_pdma = 1;
		break;
	case DMA_MODE_WRITE:
		doing_pdma = 2;
		break;
	default:
		printk("Unknown dma mode %d\n", mode);
		panic("floppy: Giving up...");
	}
}

static inline void sun_fd_set_dma_addr(char *buffer)
{
	pdma_vaddr = buffer;
}

static inline void sun_fd_set_dma_count(int length)
{
	pdma_size = length;
}

static inline void sun_fd_enable_dma(void)
{
	pdma_base = pdma_vaddr;
	pdma_areasize = pdma_size;
}

int sparc_floppy_request_irq(unsigned int irq, irq_handler_t irq_handler);

static int sun_fd_request_irq(void)
{
	static int once = 0;

	if (!once) {
		once = 1;
		return sparc_floppy_request_irq(FLOPPY_IRQ, floppy_interrupt);
	} else {
		return 0;
	}
}

static struct linux_prom_registers fd_regs[2];

static int sun_floppy_init(void)
{
	struct platform_device *op;
	struct device_node *dp;
	struct resource r;
	char state[128];
	phandle fd_node;
	phandle tnode;
	int num_regs;

	use_virtual_dma = 1;

	/* Forget it if we aren't on a machine that could possibly
	 * ever have a floppy drive.
	 */
	if (sparc_cpu_model != sun4m) {
		/* We certainly don't have a floppy controller. */
		goto no_sun_fdc;
	}
	/* Well, try to find one. */
	tnode = prom_getchild(prom_root_node);
	fd_node = prom_searchsiblings(tnode, "obio");
	if (fd_node != 0) {
		tnode = prom_getchild(fd_node);
		fd_node = prom_searchsiblings(tnode, "SUNW,fdtwo");
	} else {
		fd_node = prom_searchsiblings(tnode, "fd");
	}
	if (fd_node == 0) {
		goto no_sun_fdc;
	}

	/* The sun4m lets us know if the controller is actually usable. */
	if (prom_getproperty(fd_node, "status", state, sizeof(state)) != -1) {
		if(!strcmp(state, "disabled")) {
			goto no_sun_fdc;
		}
	}
	num_regs = prom_getproperty(fd_node, "reg", (char *) fd_regs, sizeof(fd_regs));
	num_regs = (num_regs / sizeof(fd_regs[0]));
	prom_apply_obio_ranges(fd_regs, num_regs);
	memset(&r, 0, sizeof(r));
	r.flags = fd_regs[0].which_io;
	r.start = fd_regs[0].phys_addr;
	sun_fdc = of_ioremap(&r, 0, fd_regs[0].reg_size, "floppy");

	/* Look up irq in platform_device.
	 * We try "SUNW,fdtwo" and "fd"
	 */
	op = NULL;
	for_each_node_by_name(dp, "SUNW,fdtwo") {
		op = of_find_device_by_node(dp);
		if (op)
			break;
	}
	if (!op) {
		for_each_node_by_name(dp, "fd") {
			op = of_find_device_by_node(dp);
			if (op)
				break;
		}
	}
	if (!op)
		goto no_sun_fdc;

	FLOPPY_IRQ = op->archdata.irqs[0];

	/* Last minute sanity check... */
	if (sun_fdc->status_82072 == 0xff) {
		sun_fdc = NULL;
		goto no_sun_fdc;
	}

	sun_fdops.fd_inb = sun_82077_fd_inb;
	sun_fdops.fd_outb = sun_82077_fd_outb;
	fdc_status = &sun_fdc->status_82077;

	if (sun_fdc->dor_82077 == 0x80) {
		sun_fdc->dor_82077 = 0x02;
		if (sun_fdc->dor_82077 == 0x80) {
			sun_fdops.fd_inb = sun_82072_fd_inb;
			sun_fdops.fd_outb = sun_82072_fd_outb;
			fdc_status = &sun_fdc->status_82072;
		}
	}

	/* Success... */
	allowed_drive_mask = 0x01;
	return (int) sun_fdc;

no_sun_fdc:
	return -1;
}

static int sparc_eject(void)
{
	set_dor(0x00, 0xff, 0x90);
	udelay(500);
	set_dor(0x00, 0x6f, 0x00);
	udelay(500);
	return 0;
}

#define fd_eject(drive) sparc_eject()

#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_SPARC_FLOPPY_H) */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
a439fe51	2	/* asm/floppy.h: Sparc specific parts of the Floppy driver.
f5e706ad SR	3	*
	4	* Copyright (C) 1995 David S. Miller (davem@davemloft.net)
	5	*/
	6
	7	#ifndef __ASM_SPARC_FLOPPY_H
	8	#define __ASM_SPARC_FLOPPY_H
	9
454eeb2d DM	10	#include <linux/of.h>
	11	#include <linux/of_device.h>
	12
f5e706ad	13	#include <asm/pgtable.h>
f5e706ad	14	#include <asm/idprom.h>
f5e706ad SR	15	#include <asm/oplib.h>
f5e706ad SR	16	#include <asm/auxio.h>
fbb86383 SR	17	#include <asm/setup.h>
fbb86383 SR	18	#include <asm/page.h>
f5e706ad SR	19	#include <asm/irq.h>
	20
	21	/* We don't need no stinkin' I/O port allocation crap. */
	22	#undef release_region
	23	#undef request_region
	24	#define release_region(X, Y) do { } while(0)
	25	#define request_region(X, Y, Z) (1)
	26
	27	/* References:
	28	* 1) Netbsd Sun floppy driver.
	29	* 2) NCR 82077 controller manual
	30	* 3) Intel 82077 controller manual
	31	*/
	32	struct sun_flpy_controller {
	33	volatile unsigned char status_82072; /* Main Status reg. */
	34	#define dcr_82072 status_82072 /* Digital Control reg. */
	35	#define status1_82077 status_82072 /* Auxiliary Status reg. 1 */
	36
	37	volatile unsigned char data_82072; /* Data fifo. */
	38	#define status2_82077 data_82072 /* Auxiliary Status reg. 2 */
	39
	40	volatile unsigned char dor_82077; /* Digital Output reg. */
	41	volatile unsigned char tapectl_82077; /* What the? Tape control reg? */
	42
	43	volatile unsigned char status_82077; /* Main Status Register. */
	44	#define drs_82077 status_82077 /* Digital Rate Select reg. */
	45
	46	volatile unsigned char data_82077; /* Data fifo. */
	47	volatile unsigned char ___unused;
	48	volatile unsigned char dir_82077; /* Digital Input reg. */
	49	#define dcr_82077 dir_82077 /* Config Control reg. */
	50	};
	51
	52	/* You'll only ever find one controller on a SparcStation anyways. */
	53	static struct sun_flpy_controller *sun_fdc = NULL;
f5e706ad SR	54
	55	struct sun_floppy_ops {
	56	unsigned char (*fd_inb)(int port);
	57	void (*fd_outb)(unsigned char value, int port);
	58	};
	59
	60	static struct sun_floppy_ops sun_fdops;
	61
	62	#define fd_inb(port) sun_fdops.fd_inb(port)
	63	#define fd_outb(value,port) sun_fdops.fd_outb(value,port)
	64	#define fd_enable_dma() sun_fd_enable_dma()
	65	#define fd_disable_dma() sun_fd_disable_dma()
	66	#define fd_request_dma() (0) /* nothing... */
	67	#define fd_free_dma() /* nothing... */
	68	#define fd_clear_dma_ff() /* nothing... */
	69	#define fd_set_dma_mode(mode) sun_fd_set_dma_mode(mode)
	70	#define fd_set_dma_addr(addr) sun_fd_set_dma_addr(addr)
	71	#define fd_set_dma_count(count) sun_fd_set_dma_count(count)
	72	#define fd_enable_irq() /* nothing... */
	73	#define fd_disable_irq() /* nothing... */
	74	#define fd_cacheflush(addr, size) /* nothing... */
	75	#define fd_request_irq() sun_fd_request_irq()
	76	#define fd_free_irq() /* nothing... */
	77	#if 0 /* P3: added by Alain, these cause a MMU corruption. 19960524 XXX */
	78	#define fd_dma_mem_alloc(size) ((unsigned long) vmalloc(size))
	79	#define fd_dma_mem_free(addr,size) (vfree((void *)(addr)))
	80	#endif
	81
	82	/* XXX This isn't really correct. XXX */
	83	#define get_dma_residue(x) (0)
	84
	85	#define FLOPPY0_TYPE 4
	86	#define FLOPPY1_TYPE 0
	87
	88	/* Super paranoid... */
	89	#undef HAVE_DISABLE_HLT
	90
	91	/* Here is where we catch the floppy driver trying to initialize,
	92	* therefore this is where we call the PROM device tree probing
	93	* routine etc. on the Sparc.
	94	*/
	95	#define FDC1 sun_floppy_init()
	96
	97	#define N_FDC 1
	98	#define N_DRIVE 8
	99
	100	/* No 64k boundary crossing problems on the Sparc. */
	101	#define CROSS_64KB(a,s) (0)
	102
	103	/* Routines unique to each controller type on a Sun. */
	104	static void sun_set_dor(unsigned char value, int fdc_82077)
	105	{
0301a6cb	106	if (fdc_82077)
f5e706ad	107	sun_fdc->dor_82077 = value;
f5e706ad SR	108	}
	109
	110	static unsigned char sun_read_dir(void)
	111	{
0301a6cb	112	return sun_fdc->dir_82077;
f5e706ad SR	113	}
	114
	115	static unsigned char sun_82072_fd_inb(int port)
	116	{
	117	udelay(5);
	118	switch(port & 7) {
	119	default:
	120	printk("floppy: Asked to read unknown port %d\n", port);
	121	panic("floppy: Port bolixed.");
	122	case 4: /* FD_STATUS */
	123	return sun_fdc->status_82072 & ~STATUS_DMA;
	124	case 5: /* FD_DATA */
	125	return sun_fdc->data_82072;
	126	case 7: /* FD_DIR */
	127	return sun_read_dir();
6cb79b3f	128	}
f5e706ad SR	129	panic("sun_82072_fd_inb: How did I get here?");
	130	}
	131
	132	static void sun_82072_fd_outb(unsigned char value, int port)
	133	{
	134	udelay(5);
	135	switch(port & 7) {
	136	default:
	137	printk("floppy: Asked to write to unknown port %d\n", port);
	138	panic("floppy: Port bolixed.");
	139	case 2: /* FD_DOR */
	140	sun_set_dor(value, 0);
	141	break;
	142	case 5: /* FD_DATA */
	143	sun_fdc->data_82072 = value;
	144	break;
	145	case 7: /* FD_DCR */
	146	sun_fdc->dcr_82072 = value;
	147	break;
	148	case 4: /* FD_STATUS */
	149	sun_fdc->status_82072 = value;
	150	break;
6cb79b3f	151	}
f5e706ad SR	152	return;
	153	}
	154
	155	static unsigned char sun_82077_fd_inb(int port)
	156	{
	157	udelay(5);
	158	switch(port & 7) {
	159	default:
	160	printk("floppy: Asked to read unknown port %d\n", port);
	161	panic("floppy: Port bolixed.");
	162	case 0: /* FD_STATUS_0 */
	163	return sun_fdc->status1_82077;
	164	case 1: /* FD_STATUS_1 */
	165	return sun_fdc->status2_82077;
	166	case 2: /* FD_DOR */
	167	return sun_fdc->dor_82077;
	168	case 3: /* FD_TDR */
	169	return sun_fdc->tapectl_82077;
	170	case 4: /* FD_STATUS */
	171	return sun_fdc->status_82077 & ~STATUS_DMA;
	172	case 5: /* FD_DATA */
	173	return sun_fdc->data_82077;
	174	case 7: /* FD_DIR */
	175	return sun_read_dir();
6cb79b3f	176	}
f5e706ad SR	177	panic("sun_82077_fd_inb: How did I get here?");
	178	}
	179
	180	static void sun_82077_fd_outb(unsigned char value, int port)
	181	{
	182	udelay(5);
	183	switch(port & 7) {
	184	default:
	185	printk("floppy: Asked to write to unknown port %d\n", port);
	186	panic("floppy: Port bolixed.");
	187	case 2: /* FD_DOR */
	188	sun_set_dor(value, 1);
	189	break;
	190	case 5: /* FD_DATA */
	191	sun_fdc->data_82077 = value;
	192	break;
	193	case 7: /* FD_DCR */
	194	sun_fdc->dcr_82077 = value;
	195	break;
	196	case 4: /* FD_STATUS */
	197	sun_fdc->status_82077 = value;
	198	break;
	199	case 3: /* FD_TDR */
	200	sun_fdc->tapectl_82077 = value;
	201	break;
6cb79b3f	202	}
f5e706ad SR	203	return;
	204	}
	205
	206	/* For pseudo-dma (Sun floppy drives have no real DMA available to
	207	* them so we must eat the data fifo bytes directly ourselves) we have
	208	* three state variables. doing_pdma tells our inline low-level
	209	* assembly floppy interrupt entry point whether it should sit and eat
	210	* bytes from the fifo or just transfer control up to the higher level
	211	* floppy interrupt c-code. I tried very hard but I could not get the
	212	* pseudo-dma to work in c-code without getting many overruns and
	213	* underruns. If non-zero, doing_pdma encodes the direction of
	214	* the transfer for debugging. 1=read 2=write
	215	*/
f5e706ad SR	216
	217	/* Common routines to all controller types on the Sparc. */
	218	static inline void virtual_dma_init(void)
	219	{
	220	/* nothing... */
	221	}
	222
	223	static inline void sun_fd_disable_dma(void)
	224	{
	225	doing_pdma = 0;
679bea5e	226	pdma_base = NULL;
f5e706ad SR	227	}
	228
	229	static inline void sun_fd_set_dma_mode(int mode)
	230	{
	231	switch(mode) {
	232	case DMA_MODE_READ:
	233	doing_pdma = 1;
	234	break;
	235	case DMA_MODE_WRITE:
	236	doing_pdma = 2;
	237	break;
	238	default:
	239	printk("Unknown dma mode %d\n", mode);
	240	panic("floppy: Giving up...");
	241	}
	242	}
	243
	244	static inline void sun_fd_set_dma_addr(char *buffer)
	245	{
	246	pdma_vaddr = buffer;
	247	}
	248
	249	static inline void sun_fd_set_dma_count(int length)
	250	{
	251	pdma_size = length;
	252	}
	253
	254	static inline void sun_fd_enable_dma(void)
	255	{
f5e706ad SR	256	pdma_base = pdma_vaddr;
	257	pdma_areasize = pdma_size;
	258	}
	259
f05a6865	260	int sparc_floppy_request_irq(unsigned int irq, irq_handler_t irq_handler);
f5e706ad SR	261
	262	static int sun_fd_request_irq(void)
	263	{
	264	static int once = 0;
f5e706ad	265
6baa9b20	266	if (!once) {
f5e706ad	267	once = 1;
6baa9b20 SR	268	return sparc_floppy_request_irq(FLOPPY_IRQ, floppy_interrupt);
	269	} else {
	270	return 0;
	271	}
f5e706ad SR	272	}
	273
	274	static struct linux_prom_registers fd_regs[2];
	275
	276	static int sun_floppy_init(void)
	277	{
6baa9b20 SR	278	struct platform_device *op;
6baa9b20 SR	279	struct device_node *dp;
144e988d	280	struct resource r;
f5e706ad	281	char state[128];
144e988d SR	282	phandle fd_node;
144e988d SR	283	phandle tnode;
8d125562	284	int num_regs;
f5e706ad SR	285
	286	use_virtual_dma = 1;
	287
f5e706ad SR	288	/* Forget it if we aren't on a machine that could possibly
	289	* ever have a floppy drive.
	290	*/
58fa4dcb	291	if (sparc_cpu_model != sun4m) {
f5e706ad SR	292	/* We certainly don't have a floppy controller. */
	293	goto no_sun_fdc;
	294	}
	295	/* Well, try to find one. */
	296	tnode = prom_getchild(prom_root_node);
	297	fd_node = prom_searchsiblings(tnode, "obio");
144e988d	298	if (fd_node != 0) {
f5e706ad SR	299	tnode = prom_getchild(fd_node);
	300	fd_node = prom_searchsiblings(tnode, "SUNW,fdtwo");
	301	} else {
	302	fd_node = prom_searchsiblings(tnode, "fd");
	303	}
144e988d	304	if (fd_node == 0) {
f5e706ad SR	305	goto no_sun_fdc;
	306	}
	307
	308	/* The sun4m lets us know if the controller is actually usable. */
144e988d	309	if (prom_getproperty(fd_node, "status", state, sizeof(state)) != -1) {
f5e706ad SR	310	if(!strcmp(state, "disabled")) {
	311	goto no_sun_fdc;
	312	}
	313	}
	314	num_regs = prom_getproperty(fd_node, "reg", (char *) fd_regs, sizeof(fd_regs));
	315	num_regs = (num_regs / sizeof(fd_regs[0]));
	316	prom_apply_obio_ranges(fd_regs, num_regs);
	317	memset(&r, 0, sizeof(r));
	318	r.flags = fd_regs[0].which_io;
	319	r.start = fd_regs[0].phys_addr;
144e988d	320	sun_fdc = of_ioremap(&r, 0, fd_regs[0].reg_size, "floppy");
f5e706ad	321
6baa9b20 SR	322	/* Look up irq in platform_device.
	323	* We try "SUNW,fdtwo" and "fd"
	324	*/
918f8322	325	op = NULL;
6baa9b20 SR	326	for_each_node_by_name(dp, "SUNW,fdtwo") {
	327	op = of_find_device_by_node(dp);
	328	if (op)
	329	break;
	330	}
	331	if (!op) {
	332	for_each_node_by_name(dp, "fd") {
	333	op = of_find_device_by_node(dp);
	334	if (op)
	335	break;
	336	}
	337	}
	338	if (!op)
	339	goto no_sun_fdc;
	340
	341	FLOPPY_IRQ = op->archdata.irqs[0];
	342
f5e706ad	343	/* Last minute sanity check... */
144e988d	344	if (sun_fdc->status_82072 == 0xff) {
f5e706ad SR	345	sun_fdc = NULL;
	346	goto no_sun_fdc;
	347	}
	348
	349	sun_fdops.fd_inb = sun_82077_fd_inb;
	350	sun_fdops.fd_outb = sun_82077_fd_outb;
	351	fdc_status = &sun_fdc->status_82077;
	352
	353	if (sun_fdc->dor_82077 == 0x80) {
	354	sun_fdc->dor_82077 = 0x02;
	355	if (sun_fdc->dor_82077 == 0x80) {
	356	sun_fdops.fd_inb = sun_82072_fd_inb;
	357	sun_fdops.fd_outb = sun_82072_fd_outb;
	358	fdc_status = &sun_fdc->status_82072;
	359	}
	360	}
	361
	362	/* Success... */
	363	allowed_drive_mask = 0x01;
	364	return (int) sun_fdc;
	365
	366	no_sun_fdc:
	367	return -1;
	368	}
	369
	370	static int sparc_eject(void)
	371	{
	372	set_dor(0x00, 0xff, 0x90);
	373	udelay(500);
	374	set_dor(0x00, 0x6f, 0x00);
	375	udelay(500);
	376	return 0;
	377	}
	378
	379	#define fd_eject(drive) sparc_eject()
	380
	381	#define EXTRA_FLOPPY_PARAMS
	382
334ae614 DM	383	static DEFINE_SPINLOCK(dma_spin_lock);
	384
	385	#define claim_dma_lock() \
	386	({ unsigned long flags; \
	387	spin_lock_irqsave(&dma_spin_lock, flags); \
	388	flags; \
	389	})
	390
	391	#define release_dma_lock(__flags) \
	392	spin_unlock_irqrestore(&dma_spin_lock, __flags);
	393
f5e706ad	394	#endif /* !(__ASM_SPARC_FLOPPY_H) */