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Diffstat (limited to 'include/asm-sparc64/floppy.h')
| -rw-r--r-- | include/asm-sparc64/floppy.h | 811 |
1 files changed, 811 insertions, 0 deletions
diff --git a/include/asm-sparc64/floppy.h b/include/asm-sparc64/floppy.h new file mode 100644 index 00000000000..e071b4b4edf --- /dev/null +++ b/include/asm-sparc64/floppy.h @@ -0,0 +1,811 @@ +/* $Id: floppy.h,v 1.32 2001/10/26 17:59:36 davem Exp $ + * asm-sparc64/floppy.h: Sparc specific parts of the Floppy driver. + * + * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) + * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) + * + * Ultra/PCI support added: Sep 1997 Eddie C. Dost (ecd@skynet.be) + */ + +#ifndef __ASM_SPARC64_FLOPPY_H +#define __ASM_SPARC64_FLOPPY_H + +#include <linux/config.h> +#include <linux/init.h> + +#include <asm/page.h> +#include <asm/pgtable.h> +#include <asm/system.h> +#include <asm/idprom.h> +#include <asm/oplib.h> +#include <asm/auxio.h> +#include <asm/sbus.h> +#include <asm/irq.h> + + +/* + * Define this to enable exchanging drive 0 and 1 if only drive 1 is + * probed on PCI machines. + */ +#undef PCI_FDC_SWAP_DRIVES + + +/* References: + * 1) Netbsd Sun floppy driver. + * 2) NCR 82077 controller manual + * 3) Intel 82077 controller manual + */ +struct sun_flpy_controller { + volatile unsigned char status1_82077; /* Auxiliary Status reg. 1 */ + volatile unsigned char status2_82077; /* Auxiliary Status reg. 2 */ + volatile unsigned char dor_82077; /* Digital Output reg. */ + volatile unsigned char tapectl_82077; /* 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 an Ultra anyways. */ +static struct sun_flpy_controller *sun_fdc = (struct sun_flpy_controller *)-1; +unsigned long fdc_status; +static struct sbus_dev *floppy_sdev = NULL; + +struct sun_floppy_ops { + unsigned char (*fd_inb) (unsigned long port); + void (*fd_outb) (unsigned char value, unsigned long port); + void (*fd_enable_dma) (void); + void (*fd_disable_dma) (void); + void (*fd_set_dma_mode) (int); + void (*fd_set_dma_addr) (char *); + void (*fd_set_dma_count) (int); + unsigned int (*get_dma_residue) (void); + int (*fd_request_irq) (void); + void (*fd_free_irq) (void); + int (*fd_eject) (int); +}; + +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_fdops.fd_enable_dma() +#define fd_disable_dma() sun_fdops.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_fdops.fd_set_dma_mode(mode) +#define fd_set_dma_addr(addr) sun_fdops.fd_set_dma_addr(addr) +#define fd_set_dma_count(count) sun_fdops.fd_set_dma_count(count) +#define get_dma_residue(x) sun_fdops.get_dma_residue() +#define fd_cacheflush(addr, size) /* nothing... */ +#define fd_request_irq() sun_fdops.fd_request_irq() +#define fd_free_irq() sun_fdops.fd_free_irq() +#define fd_eject(drive) sun_fdops.fd_eject(drive) + +static int FLOPPY_MOTOR_MASK = 0x10; + +/* Super paranoid... */ +#undef HAVE_DISABLE_HLT + +static int sun_floppy_types[2] = { 0, 0 }; + +/* 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 FLOPPY0_TYPE sun_floppy_init() +#define FLOPPY1_TYPE sun_floppy_types[1] + +#define FDC1 ((unsigned long)sun_fdc) + +#define N_FDC 1 +#define N_DRIVE 8 + +/* No 64k boundary crossing problems on the Sparc. */ +#define CROSS_64KB(a,s) (0) + +static unsigned char sun_82077_fd_inb(unsigned long port) +{ + udelay(5); + switch(port & 7) { + default: + printk("floppy: Asked to read unknown port %lx\n", port); + panic("floppy: Port bolixed."); + case 4: /* FD_STATUS */ + return sbus_readb(&sun_fdc->status_82077) & ~STATUS_DMA; + case 5: /* FD_DATA */ + return sbus_readb(&sun_fdc->data_82077); + case 7: /* FD_DIR */ + /* XXX: Is DCL on 0x80 in sun4m? */ + return sbus_readb(&sun_fdc->dir_82077); + }; + panic("sun_82072_fd_inb: How did I get here?"); +} + +static void sun_82077_fd_outb(unsigned char value, unsigned long port) +{ + udelay(5); + switch(port & 7) { + default: + printk("floppy: Asked to write to unknown port %lx\n", port); + panic("floppy: Port bolixed."); + case 2: /* FD_DOR */ + /* Happily, the 82077 has a real DOR register. */ + sbus_writeb(value, &sun_fdc->dor_82077); + break; + case 5: /* FD_DATA */ + sbus_writeb(value, &sun_fdc->data_82077); + break; + case 7: /* FD_DCR */ + sbus_writeb(value, &sun_fdc->dcr_82077); + break; + case 4: /* FD_STATUS */ + sbus_writeb(value, &sun_fdc->status_82077); + 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 + */ +char *pdma_vaddr; +unsigned long pdma_size; +volatile int doing_pdma = 0; + +/* This is software state */ +char *pdma_base = NULL; +unsigned long pdma_areasize; + +/* Common routines to all controller types on the Sparc. */ +static void sun_fd_disable_dma(void) +{ + doing_pdma = 0; + if (pdma_base) { + mmu_unlockarea(pdma_base, pdma_areasize); + pdma_base = NULL; + } +} + +static 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 void sun_fd_set_dma_addr(char *buffer) +{ + pdma_vaddr = buffer; +} + +static void sun_fd_set_dma_count(int length) +{ + pdma_size = length; +} + +static void sun_fd_enable_dma(void) +{ + pdma_vaddr = mmu_lockarea(pdma_vaddr, pdma_size); + pdma_base = pdma_vaddr; + pdma_areasize = pdma_size; +} + +/* Our low-level entry point in arch/sparc/kernel/entry.S */ +extern irqreturn_t floppy_hardint(int irq, void *unused, struct pt_regs *regs); + +static int sun_fd_request_irq(void) +{ + static int once = 0; + int error; + + if(!once) { + once = 1; + + error = request_fast_irq(FLOPPY_IRQ, floppy_hardint, + SA_INTERRUPT, "floppy", NULL); + + return ((error == 0) ? 0 : -1); + } + return 0; +} + +static void sun_fd_free_irq(void) +{ +} + +static unsigned int sun_get_dma_residue(void) +{ + /* XXX This isn't really correct. XXX */ + return 0; +} + +static int sun_fd_eject(int drive) +{ + set_dor(0x00, 0xff, 0x90); + udelay(500); + set_dor(0x00, 0x6f, 0x00); + udelay(500); + return 0; +} + +#ifdef CONFIG_PCI +#include <asm/ebus.h> +#include <asm/isa.h> +#include <asm/ns87303.h> + +static struct ebus_dma_info sun_pci_fd_ebus_dma; +static struct pci_dev *sun_pci_ebus_dev; +static int sun_pci_broken_drive = -1; + +struct sun_pci_dma_op { + unsigned int addr; + int len; + int direction; + char *buf; +}; +static struct sun_pci_dma_op sun_pci_dma_current = { -1U, 0, 0, NULL}; +static struct sun_pci_dma_op sun_pci_dma_pending = { -1U, 0, 0, NULL}; + +extern irqreturn_t floppy_interrupt(int irq, void *dev_id, struct pt_regs *regs); + +static unsigned char sun_pci_fd_inb(unsigned long port) +{ + udelay(5); + return inb(port); +} + +static void sun_pci_fd_outb(unsigned char val, unsigned long port) +{ + udelay(5); + outb(val, port); +} + +static void sun_pci_fd_broken_outb(unsigned char val, unsigned long port) +{ + udelay(5); + /* + * XXX: Due to SUN's broken floppy connector on AX and AXi + * we need to turn on MOTOR_0 also, if the floppy is + * jumpered to DS1 (like most PC floppies are). I hope + * this does not hurt correct hardware like the AXmp. + * (Eddie, Sep 12 1998). + */ + if (port == ((unsigned long)sun_fdc) + 2) { + if (((val & 0x03) == sun_pci_broken_drive) && (val & 0x20)) { + val |= 0x10; + } + } + outb(val, port); +} + +#ifdef PCI_FDC_SWAP_DRIVES +static void sun_pci_fd_lde_broken_outb(unsigned char val, unsigned long port) +{ + udelay(5); + /* + * XXX: Due to SUN's broken floppy connector on AX and AXi + * we need to turn on MOTOR_0 also, if the floppy is + * jumpered to DS1 (like most PC floppies are). I hope + * this does not hurt correct hardware like the AXmp. + * (Eddie, Sep 12 1998). + */ + if (port == ((unsigned long)sun_fdc) + 2) { + if (((val & 0x03) == sun_pci_broken_drive) && (val & 0x10)) { + val &= ~(0x03); + val |= 0x21; + } + } + outb(val, port); +} +#endif /* PCI_FDC_SWAP_DRIVES */ + +static void sun_pci_fd_enable_dma(void) +{ + BUG_ON((NULL == sun_pci_dma_pending.buf) || + (0 == sun_pci_dma_pending.len) || + (0 == sun_pci_dma_pending.direction)); + + sun_pci_dma_current.buf = sun_pci_dma_pending.buf; + sun_pci_dma_current.len = sun_pci_dma_pending.len; + sun_pci_dma_current.direction = sun_pci_dma_pending.direction; + + sun_pci_dma_pending.buf = NULL; + sun_pci_dma_pending.len = 0; + sun_pci_dma_pending.direction = 0; + sun_pci_dma_pending.addr = -1U; + + sun_pci_dma_current.addr = + pci_map_single(sun_pci_ebus_dev, + sun_pci_dma_current.buf, + sun_pci_dma_current.len, + sun_pci_dma_current.direction); + + ebus_dma_enable(&sun_pci_fd_ebus_dma, 1); + + if (ebus_dma_request(&sun_pci_fd_ebus_dma, + sun_pci_dma_current.addr, + sun_pci_dma_current.len)) + BUG(); +} + +static void sun_pci_fd_disable_dma(void) +{ + ebus_dma_enable(&sun_pci_fd_ebus_dma, 0); + if (sun_pci_dma_current.addr != -1U) + pci_unmap_single(sun_pci_ebus_dev, + sun_pci_dma_current.addr, + sun_pci_dma_current.len, + sun_pci_dma_current.direction); + sun_pci_dma_current.addr = -1U; +} + +static void sun_pci_fd_set_dma_mode(int mode) +{ + if (mode == DMA_MODE_WRITE) + sun_pci_dma_pending.direction = PCI_DMA_TODEVICE; + else + sun_pci_dma_pending.direction = PCI_DMA_FROMDEVICE; + + ebus_dma_prepare(&sun_pci_fd_ebus_dma, mode != DMA_MODE_WRITE); +} + +static void sun_pci_fd_set_dma_count(int length) +{ + sun_pci_dma_pending.len = length; +} + +static void sun_pci_fd_set_dma_addr(char *buffer) +{ + sun_pci_dma_pending.buf = buffer; +} + +static unsigned int sun_pci_get_dma_residue(void) +{ + return ebus_dma_residue(&sun_pci_fd_ebus_dma); +} + +static int sun_pci_fd_request_irq(void) +{ + return ebus_dma_irq_enable(&sun_pci_fd_ebus_dma, 1); +} + +static void sun_pci_fd_free_irq(void) +{ + ebus_dma_irq_enable(&sun_pci_fd_ebus_dma, 0); +} + +static int sun_pci_fd_eject(int drive) +{ + return -EINVAL; +} + +void sun_pci_fd_dma_callback(struct ebus_dma_info *p, int event, void *cookie) +{ + floppy_interrupt(0, NULL, NULL); +} + +/* + * Floppy probing, we'd like to use /dev/fd0 for a single Floppy on PCI, + * even if this is configured using DS1, thus looks like /dev/fd1 with + * the cabling used in Ultras. + */ +#define DOR (port + 2) +#define MSR (port + 4) +#define FIFO (port + 5) + +static void sun_pci_fd_out_byte(unsigned long port, unsigned char val, + unsigned long reg) +{ + unsigned char status; + int timeout = 1000; + + while (!((status = inb(MSR)) & 0x80) && --timeout) + udelay(100); + outb(val, reg); +} + +static unsigned char sun_pci_fd_sensei(unsigned long port) +{ + unsigned char result[2] = { 0x70, 0x00 }; + unsigned char status; + int i = 0; + + sun_pci_fd_out_byte(port, 0x08, FIFO); + do { + int timeout = 1000; + + while (!((status = inb(MSR)) & 0x80) && --timeout) + udelay(100); + + if (!timeout) + break; + + if ((status & 0xf0) == 0xd0) + result[i++] = inb(FIFO); + else + break; + } while (i < 2); + + return result[0]; +} + +static void sun_pci_fd_reset(unsigned long port) +{ + unsigned char mask = 0x00; + unsigned char status; + int timeout = 10000; + + outb(0x80, MSR); + do { + status = sun_pci_fd_sensei(port); + if ((status & 0xc0) == 0xc0) + mask |= 1 << (status & 0x03); + else + 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_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; + unsigned long 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 = 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 = 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) */ |