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-rw-r--r--arch/sparc/include/asm/floppy_64.h779
1 files changed, 779 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/floppy_64.h b/arch/sparc/include/asm/floppy_64.h
new file mode 100644
index 000000000..070c8c1f5
--- /dev/null
+++ b/arch/sparc/include/asm/floppy_64.h
@@ -0,0 +1,779 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* floppy.h: Sparc specific parts of the Floppy driver.
+ *
+ * Copyright (C) 1996, 2007, 2008 David S. Miller (davem@davemloft.net)
+ * 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/of.h>
+#include <linux/of_device.h>
+#include <linux/dma-mapping.h>
+
+#include <asm/auxio.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 platform_device *floppy_op = NULL;
+
+struct sun_floppy_ops {
+ unsigned char (*fd_inb) (unsigned long port, unsigned int reg);
+ void (*fd_outb) (unsigned char value, unsigned long base,
+ unsigned int reg);
+ 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(base, reg) sun_fdops.fd_inb(base, reg)
+#define fd_outb(value, base, reg) sun_fdops.fd_outb(value, base, reg)
+#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_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)
+
+/* 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 base, unsigned int reg)
+{
+ udelay(5);
+ switch (reg) {
+ default:
+ printk("floppy: Asked to read unknown port %x\n", reg);
+ panic("floppy: Port bolixed.");
+ case FD_STATUS:
+ return sbus_readb(&sun_fdc->status_82077) & ~STATUS_DMA;
+ case FD_DATA:
+ return sbus_readb(&sun_fdc->data_82077);
+ case 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 base,
+ unsigned int reg)
+{
+ udelay(5);
+ switch (reg) {
+ default:
+ printk("floppy: Asked to write to unknown port %x\n", reg);
+ panic("floppy: Port bolixed.");
+ case FD_DOR:
+ /* Happily, the 82077 has a real DOR register. */
+ sbus_writeb(value, &sun_fdc->dor_82077);
+ break;
+ case FD_DATA:
+ sbus_writeb(value, &sun_fdc->data_82077);
+ break;
+ case FD_DCR:
+ sbus_writeb(value, &sun_fdc->dcr_82077);
+ break;
+ case FD_DSR:
+ 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
+ */
+unsigned 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;
+ 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_base = pdma_vaddr;
+ pdma_areasize = pdma_size;
+}
+
+irqreturn_t sparc_floppy_irq(int irq, void *dev_cookie)
+{
+ if (likely(doing_pdma)) {
+ void __iomem *stat = (void __iomem *) fdc_status;
+ unsigned char *vaddr = pdma_vaddr;
+ unsigned long size = pdma_size;
+ u8 val;
+
+ while (size) {
+ val = readb(stat);
+ if (unlikely(!(val & 0x80))) {
+ pdma_vaddr = vaddr;
+ pdma_size = size;
+ return IRQ_HANDLED;
+ }
+ if (unlikely(!(val & 0x20))) {
+ pdma_vaddr = vaddr;
+ pdma_size = size;
+ doing_pdma = 0;
+ goto main_interrupt;
+ }
+ if (val & 0x40) {
+ /* read */
+ *vaddr++ = readb(stat + 1);
+ } else {
+ unsigned char data = *vaddr++;
+
+ /* write */
+ writeb(data, stat + 1);
+ }
+ size--;
+ }
+
+ pdma_vaddr = vaddr;
+ pdma_size = size;
+
+ /* Send Terminal Count pulse to floppy controller. */
+ val = readb(auxio_register);
+ val |= AUXIO_AUX1_FTCNT;
+ writeb(val, auxio_register);
+ val &= ~AUXIO_AUX1_FTCNT;
+ writeb(val, auxio_register);
+
+ doing_pdma = 0;
+ }
+
+main_interrupt:
+ return floppy_interrupt(irq, dev_cookie);
+}
+
+static int sun_fd_request_irq(void)
+{
+ static int once = 0;
+ int error;
+
+ if(!once) {
+ once = 1;
+
+ error = request_irq(FLOPPY_IRQ, sparc_floppy_irq,
+ 0, "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;
+}
+
+#include <asm/ebus_dma.h>
+#include <asm/ns87303.h>
+
+static struct ebus_dma_info sun_pci_fd_ebus_dma;
+static struct device *sun_floppy_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};
+
+irqreturn_t floppy_interrupt(int irq, void *dev_id);
+
+static unsigned char sun_pci_fd_inb(unsigned long base, unsigned int reg)
+{
+ udelay(5);
+ return inb(base + reg);
+}
+
+static void sun_pci_fd_outb(unsigned char val, unsigned long base,
+ unsigned int reg)
+{
+ udelay(5);
+ outb(val, base + reg);
+}
+
+static void sun_pci_fd_broken_outb(unsigned char val, unsigned long base,
+ unsigned int reg)
+{
+ 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 (reg == FD_DOR) {
+ if (((val & 0x03) == sun_pci_broken_drive) && (val & 0x20)) {
+ val |= 0x10;
+ }
+ }
+ outb(val, base + reg);
+}
+
+#ifdef PCI_FDC_SWAP_DRIVES
+static void sun_pci_fd_lde_broken_outb(unsigned char val, unsigned long base,
+ unsigned int reg)
+{
+ 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 (reg == FD_DOR) {
+ if (((val & 0x03) == sun_pci_broken_drive) && (val & 0x10)) {
+ val &= ~(0x03);
+ val |= 0x21;
+ }
+ }
+ outb(val, base + reg);
+}
+#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 =
+ dma_map_single(sun_floppy_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)
+ dma_unmap_single(sun_floppy_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 = DMA_TO_DEVICE;
+ else
+ sun_pci_dma_pending.direction = DMA_FROM_DEVICE;
+
+ 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);
+}
+
+/*
+ * 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
+
+static int __init ebus_fdthree_p(struct device_node *dp)
+{
+ if (of_node_name_eq(dp, "fdthree"))
+ return 1;
+ if (of_node_name_eq(dp, "floppy")) {
+ const char *compat;
+
+ compat = of_get_property(dp, "compatible", NULL);
+ if (compat && !strcmp(compat, "fdthree"))
+ return 1;
+ }
+ return 0;
+}
+
+static unsigned long __init sun_floppy_init(void)
+{
+ static int initialized = 0;
+ struct device_node *dp;
+ struct platform_device *op;
+ const char *prop;
+ char state[128];
+
+ if (initialized)
+ return sun_floppy_types[0];
+ initialized = 1;
+
+ op = NULL;
+
+ for_each_node_by_name(dp, "SUNW,fdtwo") {
+ if (!of_node_name_eq(dp->parent, "sbus"))
+ continue;
+ op = of_find_device_by_node(dp);
+ if (op)
+ break;
+ }
+ if (op) {
+ floppy_op = op;
+ FLOPPY_IRQ = op->archdata.irqs[0];
+ } else {
+ struct device_node *ebus_dp;
+ void __iomem *auxio_reg;
+ const char *state_prop;
+ unsigned long config;
+
+ dp = NULL;
+ for_each_node_by_name(ebus_dp, "ebus") {
+ for (dp = ebus_dp->child; dp; dp = dp->sibling) {
+ if (ebus_fdthree_p(dp))
+ goto found_fdthree;
+ }
+ }
+ found_fdthree:
+ if (!dp)
+ return 0;
+
+ op = of_find_device_by_node(dp);
+ if (!op)
+ return 0;
+
+ state_prop = of_get_property(op->dev.of_node, "status", NULL);
+ if (state_prop && !strncmp(state_prop, "disabled", 8))
+ return 0;
+
+ FLOPPY_IRQ = op->archdata.irqs[0];
+
+ /* Make sure the high density bit is set, some systems
+ * (most notably Ultra5/Ultra10) come up with it clear.
+ */
+ auxio_reg = (void __iomem *) op->resource[2].start;
+ writel(readl(auxio_reg)|0x2, auxio_reg);
+
+ sun_floppy_dev = &op->dev;
+
+ spin_lock_init(&sun_pci_fd_ebus_dma.lock);
+
+ /* XXX ioremap */
+ sun_pci_fd_ebus_dma.regs = (void __iomem *)
+ op->resource[1].start;
+ if (!sun_pci_fd_ebus_dma.regs)
+ return 0;
+
+ sun_pci_fd_ebus_dma.flags = (EBUS_DMA_FLAG_USE_EBDMA_HANDLER |
+ EBUS_DMA_FLAG_TCI_DISABLE);
+ sun_pci_fd_ebus_dma.callback = sun_pci_fd_dma_callback;
+ sun_pci_fd_ebus_dma.client_cookie = NULL;
+ sun_pci_fd_ebus_dma.irq = FLOPPY_IRQ;
+ strcpy(sun_pci_fd_ebus_dma.name, "floppy");
+ if (ebus_dma_register(&sun_pci_fd_ebus_dma))
+ return 0;
+
+ /* XXX ioremap */
+ sun_fdc = (struct sun_flpy_controller *) op->resource[0].start;
+
+ sun_fdops.fd_inb = sun_pci_fd_inb;
+ sun_fdops.fd_outb = sun_pci_fd_outb;
+
+ can_use_virtual_dma = use_virtual_dma = 0;
+ sun_fdops.fd_enable_dma = sun_pci_fd_enable_dma;
+ sun_fdops.fd_disable_dma = sun_pci_fd_disable_dma;
+ sun_fdops.fd_set_dma_mode = sun_pci_fd_set_dma_mode;
+ sun_fdops.fd_set_dma_addr = sun_pci_fd_set_dma_addr;
+ sun_fdops.fd_set_dma_count = sun_pci_fd_set_dma_count;
+ sun_fdops.get_dma_residue = sun_pci_get_dma_residue;
+
+ sun_fdops.fd_request_irq = sun_pci_fd_request_irq;
+ sun_fdops.fd_free_irq = sun_pci_fd_free_irq;
+
+ sun_fdops.fd_eject = sun_pci_fd_eject;
+
+ fdc_status = (unsigned long) &sun_fdc->status_82077;
+
+ /*
+ * XXX: Find out on which machines this is really needed.
+ */
+ if (1) {
+ sun_pci_broken_drive = 1;
+ sun_fdops.fd_outb = sun_pci_fd_broken_outb;
+ }
+
+ allowed_drive_mask = 0;
+ if (sun_pci_fd_test_drive((unsigned long)sun_fdc, 0))
+ sun_floppy_types[0] = 4;
+ if (sun_pci_fd_test_drive((unsigned long)sun_fdc, 1))
+ sun_floppy_types[1] = 4;
+
+ /*
+ * Find NS87303 SuperIO config registers (through ecpp).
+ */
+ config = 0;
+ for (dp = ebus_dp->child; dp; dp = dp->sibling) {
+ if (of_node_name_eq(dp, "ecpp")) {
+ struct platform_device *ecpp_op;
+
+ ecpp_op = of_find_device_by_node(dp);
+ if (ecpp_op)
+ config = ecpp_op->resource[1].start;
+ goto config_done;
+ }
+ }
+ config_done:
+
+ /*
+ * Sanity check, is this really the NS87303?
+ */
+ switch (config & 0x3ff) {
+ case 0x02e:
+ case 0x15c:
+ case 0x26e:
+ case 0x398:
+ break;
+ default:
+ config = 0;
+ }
+
+ if (!config)
+ return sun_floppy_types[0];
+
+ /* Enable PC-AT mode. */
+ ns87303_modify(config, ASC, 0, 0xc0);
+
+#ifdef PCI_FDC_SWAP_DRIVES
+ /*
+ * If only Floppy 1 is present, swap drives.
+ */
+ if (!sun_floppy_types[0] && sun_floppy_types[1]) {
+ /*
+ * Set the drive exchange bit in FCR on NS87303,
+ * make sure other bits are sane before doing so.
+ */
+ ns87303_modify(config, FER, FER_EDM, 0);
+ ns87303_modify(config, ASC, ASC_DRV2_SEL, 0);
+ ns87303_modify(config, FCR, 0, FCR_LDE);
+
+ config = sun_floppy_types[0];
+ sun_floppy_types[0] = sun_floppy_types[1];
+ sun_floppy_types[1] = config;
+
+ if (sun_pci_broken_drive != -1) {
+ sun_pci_broken_drive = 1 - sun_pci_broken_drive;
+ sun_fdops.fd_outb = sun_pci_fd_lde_broken_outb;
+ }
+ }
+#endif /* PCI_FDC_SWAP_DRIVES */
+
+ return sun_floppy_types[0];
+ }
+ prop = of_get_property(op->dev.of_node, "status", NULL);
+ if (prop && !strncmp(state, "disabled", 8))
+ return 0;
+
+ /*
+ * We cannot do of_ioremap here: it does request_region,
+ * which the generic floppy driver tries to do once again.
+ * But we must use the sdev resource values as they have
+ * had parent ranges applied.
+ */
+ sun_fdc = (struct sun_flpy_controller *)
+ (op->resource[0].start +
+ ((op->resource[0].flags & 0x1ffUL) << 32UL));
+
+ /* Last minute sanity check... */
+ if (sbus_readb(&sun_fdc->status1_82077) == 0xff) {
+ sun_fdc = (struct sun_flpy_controller *)-1;
+ return 0;
+ }
+
+ sun_fdops.fd_inb = sun_82077_fd_inb;
+ sun_fdops.fd_outb = sun_82077_fd_outb;
+
+ can_use_virtual_dma = use_virtual_dma = 1;
+ sun_fdops.fd_enable_dma = sun_fd_enable_dma;
+ sun_fdops.fd_disable_dma = sun_fd_disable_dma;
+ sun_fdops.fd_set_dma_mode = sun_fd_set_dma_mode;
+ sun_fdops.fd_set_dma_addr = sun_fd_set_dma_addr;
+ sun_fdops.fd_set_dma_count = sun_fd_set_dma_count;
+ sun_fdops.get_dma_residue = sun_get_dma_residue;
+
+ sun_fdops.fd_request_irq = sun_fd_request_irq;
+ sun_fdops.fd_free_irq = sun_fd_free_irq;
+
+ sun_fdops.fd_eject = sun_fd_eject;
+
+ fdc_status = (unsigned long) &sun_fdc->status_82077;
+
+ /* Success... */
+ allowed_drive_mask = 0x01;
+ sun_floppy_types[0] = 4;
+ sun_floppy_types[1] = 0;
+
+ return sun_floppy_types[0];
+}
+
+#define EXTRA_FLOPPY_PARAMS
+
+static DEFINE_SPINLOCK(dma_spin_lock);
+
+#define claim_dma_lock() \
+({ unsigned long flags; \
+ spin_lock_irqsave(&dma_spin_lock, flags); \
+ flags; \
+})
+
+#define release_dma_lock(__flags) \
+ spin_unlock_irqrestore(&dma_spin_lock, __flags);
+
+#endif /* !(__ASM_SPARC64_FLOPPY_H) */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 12:49:03 +0000