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Message-Id: <20201218184347.2180772-3-sam@ravnborg.org>
Date: Fri, 18 Dec 2020 19:43:36 +0100
From: Sam Ravnborg <sam@...nborg.org>
To: David S Miller <davem@...emloft.net>, sparclinux@...r.kernel.org,
Andreas Larsson <andreas@...sler.com>,
Arnd Bergmann <arnd@...nel.org>
Cc: Alexey Dobriyan <adobriyan@...il.com>,
Al Viro <viro@...iv.linux.org.uk>,
Andrew Morton <akpm@...ux-foundation.org>,
Anshuman Khandual <anshuman.khandual@....com>,
Arvind Sankar <nivedita@...m.mit.edu>,
Christian Brauner <christian.brauner@...ntu.com>,
Denis Efremov <efremov@...ux.com>,
Dmitry Safonov <0x7f454c46@...il.com>,
Geert Uytterhoeven <geert@...ux-m68k.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Ira Weiny <ira.weiny@...el.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
Mark Rutland <mark.rutland@....com>,
Mike Rapoport <rppt@...nel.org>,
Pekka Enberg <penberg@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
Sam Ravnborg <sam@...nborg.org>,
Stephen Rothwell <sfr@...b.auug.org.au>,
Thomas Gleixner <tglx@...utronix.de>,
Will Deacon <will@...nel.org>, Willy Tarreau <w@....eu>,
linux-kernel@...r.kernel.org, debian-sparc@...ts.debian.org,
gentoo-sparc@....o
Subject: [PATCH v1 02/13] sparc32: Drop floppy support
LEON do not have floppy support so we can drop it
Signed-off-by: Sam Ravnborg <sam@...nborg.org>
Cc: "David S. Miller" <davem@...emloft.net>
Cc: Sam Ravnborg <sam@...nborg.org>
Cc: Mike Rapoport <rppt@...nel.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Denis Efremov <efremov@...ux.com>
Cc: Willy Tarreau <w@....eu>
Cc: Christian Brauner <christian.brauner@...ntu.com>
Cc: sparclinux@...r.kernel.org
Cc: Arnd Bergmann <arnd@...nel.org>
Cc: Andreas Larsson <andreas@...sler.com>
---
arch/sparc/Kconfig | 2 +-
arch/sparc/include/asm/floppy.h | 786 ++++++++++++++++++++++++++++-
arch/sparc/include/asm/floppy_32.h | 393 ---------------
arch/sparc/include/asm/floppy_64.h | 779 ----------------------------
arch/sparc/kernel/entry.S | 137 -----
arch/sparc/kernel/irq.h | 3 -
arch/sparc/kernel/irq_32.c | 93 ----
arch/sparc/kernel/kernel.h | 2 -
8 files changed, 779 insertions(+), 1416 deletions(-)
delete mode 100644 arch/sparc/include/asm/floppy_32.h
delete mode 100644 arch/sparc/include/asm/floppy_64.h
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index c9c34dc52b7d..2c6d8d834f9a 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -200,7 +200,7 @@ config GENERIC_CALIBRATE_DELAY
config ARCH_MAY_HAVE_PC_FDC
bool
- default y
+ default y if SPARC64
config EMULATED_CMPXCHG
bool
diff --git a/arch/sparc/include/asm/floppy.h b/arch/sparc/include/asm/floppy.h
index 4b315802e635..070c8c1f5c8f 100644
--- a/arch/sparc/include/asm/floppy.h
+++ b/arch/sparc/include/asm/floppy.h
@@ -1,9 +1,779 @@
/* SPDX-License-Identifier: GPL-2.0 */
-#ifndef ___ASM_SPARC_FLOPPY_H
-#define ___ASM_SPARC_FLOPPY_H
-#if defined(__sparc__) && defined(__arch64__)
-#include <asm/floppy_64.h>
-#else
-#include <asm/floppy_32.h>
-#endif
-#endif
+/* floppy.h: Sparc specific parts of the Floppy driver.
+ *
+ * Copyright (C) 1996, 2007, 2008 David S. Miller (davem@...emloft.net)
+ * Copyright (C) 1997 Jakub Jelinek (jj@...site.mff.cuni.cz)
+ *
+ * Ultra/PCI support added: Sep 1997 Eddie C. Dost (ecd@...net.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) */
diff --git a/arch/sparc/include/asm/floppy_32.h b/arch/sparc/include/asm/floppy_32.h
deleted file mode 100644
index e10ab9ad3097..000000000000
--- a/arch/sparc/include/asm/floppy_32.h
+++ /dev/null
@@ -1,393 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/* asm/floppy.h: Sparc specific parts of the Floppy driver.
- *
- * Copyright (C) 1995 David S. Miller (davem@...emloft.net)
- */
-
-#ifndef __ASM_SPARC_FLOPPY_H
-#define __ASM_SPARC_FLOPPY_H
-
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/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(base, reg) sun_fdops.fd_inb(reg)
-#define fd_outb(value, base, reg) sun_fdops.fd_outb(value, reg)
-#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_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) {
- default:
- printk("floppy: Asked to read unknown port %d\n", port);
- panic("floppy: Port bolixed.");
- case FD_STATUS:
- return sun_fdc->status_82072 & ~STATUS_DMA;
- case FD_DATA:
- return sun_fdc->data_82072;
- case 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) {
- default:
- printk("floppy: Asked to write to unknown port %d\n", port);
- panic("floppy: Port bolixed.");
- case FD_DOR:
- sun_set_dor(value, 0);
- break;
- case FD_DATA:
- sun_fdc->data_82072 = value;
- break;
- case FD_DCR:
- sun_fdc->dcr_82072 = value;
- break;
- case FD_DSR:
- sun_fdc->status_82072 = value;
- break;
- }
- return;
-}
-
-static unsigned char sun_82077_fd_inb(int port)
-{
- udelay(5);
- switch (port) {
- default:
- printk("floppy: Asked to read unknown port %d\n", port);
- panic("floppy: Port bolixed.");
- case FD_SRA:
- return sun_fdc->status1_82077;
- case FD_SRB:
- return sun_fdc->status2_82077;
- case FD_DOR:
- return sun_fdc->dor_82077;
- case FD_TDR:
- return sun_fdc->tapectl_82077;
- case FD_STATUS:
- return sun_fdc->status_82077 & ~STATUS_DMA;
- case FD_DATA:
- return sun_fdc->data_82077;
- case 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) {
- default:
- printk("floppy: Asked to write to unknown port %d\n", port);
- panic("floppy: Port bolixed.");
- case FD_DOR:
- sun_set_dor(value, 1);
- break;
- case FD_DATA:
- sun_fdc->data_82077 = value;
- break;
- case FD_DCR:
- sun_fdc->dcr_82077 = value;
- break;
- case FD_DSR:
- sun_fdc->status_82077 = value;
- break;
- case 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) */
diff --git a/arch/sparc/include/asm/floppy_64.h b/arch/sparc/include/asm/floppy_64.h
deleted file mode 100644
index 070c8c1f5c8f..000000000000
--- a/arch/sparc/include/asm/floppy_64.h
+++ /dev/null
@@ -1,779 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/* floppy.h: Sparc specific parts of the Floppy driver.
- *
- * Copyright (C) 1996, 2007, 2008 David S. Miller (davem@...emloft.net)
- * Copyright (C) 1997 Jakub Jelinek (jj@...site.mff.cuni.cz)
- *
- * Ultra/PCI support added: Sep 1997 Eddie C. Dost (ecd@...net.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) */
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S
index d58940280f8d..9985b08a3467 100644
--- a/arch/sparc/kernel/entry.S
+++ b/arch/sparc/kernel/entry.S
@@ -55,143 +55,6 @@ arch_kgdb_breakpoint:
.size arch_kgdb_breakpoint,.-arch_kgdb_breakpoint
#endif
-#if defined(CONFIG_BLK_DEV_FD) || defined(CONFIG_BLK_DEV_FD_MODULE)
- .align 4
- .globl floppy_hardint
-floppy_hardint:
- /*
- * This code cannot touch registers %l0 %l1 and %l2
- * because SAVE_ALL depends on their values. It depends
- * on %l3 also, but we regenerate it before a call.
- * Other registers are:
- * %l3 -- base address of fdc registers
- * %l4 -- pdma_vaddr
- * %l5 -- scratch for ld/st address
- * %l6 -- pdma_size
- * %l7 -- scratch [floppy byte, ld/st address, aux. data]
- */
-
- /* Do we have work to do? */
- sethi %hi(doing_pdma), %l7
- ld [%l7 + %lo(doing_pdma)], %l7
- cmp %l7, 0
- be floppy_dosoftint
- nop
-
- /* Load fdc register base */
- sethi %hi(fdc_status), %l3
- ld [%l3 + %lo(fdc_status)], %l3
-
- /* Setup register addresses */
- sethi %hi(pdma_vaddr), %l5 ! transfer buffer
- ld [%l5 + %lo(pdma_vaddr)], %l4
- sethi %hi(pdma_size), %l5 ! bytes to go
- ld [%l5 + %lo(pdma_size)], %l6
-next_byte:
- ldub [%l3], %l7
-
- andcc %l7, 0x80, %g0 ! Does fifo still have data
- bz floppy_fifo_emptied ! fifo has been emptied...
- andcc %l7, 0x20, %g0 ! in non-dma mode still?
- bz floppy_overrun ! nope, overrun
- andcc %l7, 0x40, %g0 ! 0=write 1=read
- bz floppy_write
- sub %l6, 0x1, %l6
-
- /* Ok, actually read this byte */
- ldub [%l3 + 1], %l7
- orcc %g0, %l6, %g0
- stb %l7, [%l4]
- bne next_byte
- add %l4, 0x1, %l4
-
- b floppy_tdone
- nop
-
-floppy_write:
- /* Ok, actually write this byte */
- ldub [%l4], %l7
- orcc %g0, %l6, %g0
- stb %l7, [%l3 + 1]
- bne next_byte
- add %l4, 0x1, %l4
-
- /* fall through... */
-floppy_tdone:
- sethi %hi(pdma_vaddr), %l5
- st %l4, [%l5 + %lo(pdma_vaddr)]
- sethi %hi(pdma_size), %l5
- st %l6, [%l5 + %lo(pdma_size)]
- /* Flip terminal count pin */
- set auxio_register, %l7
- ld [%l7], %l7
-
- ldub [%l7], %l5
-
- or %l5, 0xc2, %l5
- stb %l5, [%l7]
- andn %l5, 0x02, %l5
-
-2:
- /* Kill some time so the bits set */
- WRITE_PAUSE
- WRITE_PAUSE
-
- stb %l5, [%l7]
-
- /* Prevent recursion */
- sethi %hi(doing_pdma), %l7
- b floppy_dosoftint
- st %g0, [%l7 + %lo(doing_pdma)]
-
- /* We emptied the FIFO, but we haven't read everything
- * as of yet. Store the current transfer address and
- * bytes left to read so we can continue when the next
- * fast IRQ comes in.
- */
-floppy_fifo_emptied:
- sethi %hi(pdma_vaddr), %l5
- st %l4, [%l5 + %lo(pdma_vaddr)]
- sethi %hi(pdma_size), %l7
- st %l6, [%l7 + %lo(pdma_size)]
-
- /* Restore condition codes */
- wr %l0, 0x0, %psr
- WRITE_PAUSE
-
- jmp %l1
- rett %l2
-
-floppy_overrun:
- sethi %hi(pdma_vaddr), %l5
- st %l4, [%l5 + %lo(pdma_vaddr)]
- sethi %hi(pdma_size), %l5
- st %l6, [%l5 + %lo(pdma_size)]
- /* Prevent recursion */
- sethi %hi(doing_pdma), %l7
- st %g0, [%l7 + %lo(doing_pdma)]
-
- /* fall through... */
-floppy_dosoftint:
- rd %wim, %l3
- SAVE_ALL
-
- /* Set all IRQs off. */
- or %l0, PSR_PIL, %l4
- wr %l4, 0x0, %psr
- WRITE_PAUSE
- wr %l4, PSR_ET, %psr
- WRITE_PAUSE
-
- mov 11, %o0 ! floppy irq level (unused anyway)
- mov %g0, %o1 ! devid is not used in fast interrupts
- call sparc_floppy_irq
- add %sp, STACKFRAME_SZ, %o2 ! struct pt_regs *regs
-
- RESTORE_ALL
-
-#endif /* (CONFIG_BLK_DEV_FD) */
-
/* Bad trap handler */
.globl bad_trap_handler
bad_trap_handler:
diff --git a/arch/sparc/kernel/irq.h b/arch/sparc/kernel/irq.h
index b02026ad6e34..0d9b740725b4 100644
--- a/arch/sparc/kernel/irq.h
+++ b/arch/sparc/kernel/irq.h
@@ -83,9 +83,6 @@ void handler_irq(unsigned int pil, struct pt_regs *regs);
unsigned long leon_get_irqmask(unsigned int irq);
-/* irq_32.c */
-void sparc_floppy_irq(int irq, void *dev_id, struct pt_regs *regs);
-
/* sun4m_irq.c */
void sun4m_nmi(struct pt_regs *regs);
diff --git a/arch/sparc/kernel/irq_32.c b/arch/sparc/kernel/irq_32.c
index e8452be5123b..510184c3aa17 100644
--- a/arch/sparc/kernel/irq_32.c
+++ b/arch/sparc/kernel/irq_32.c
@@ -235,99 +235,6 @@ void handler_irq(unsigned int pil, struct pt_regs *regs)
set_irq_regs(old_regs);
}
-#if defined(CONFIG_BLK_DEV_FD) || defined(CONFIG_BLK_DEV_FD_MODULE)
-static unsigned int floppy_irq;
-
-int sparc_floppy_request_irq(unsigned int irq, irq_handler_t irq_handler)
-{
- unsigned int cpu_irq;
- int err;
-
-
- err = request_irq(irq, irq_handler, 0, "floppy", NULL);
- if (err)
- return -1;
-
- /* Save for later use in floppy interrupt handler */
- floppy_irq = irq;
-
- cpu_irq = (irq & (NR_IRQS - 1));
-
- /* Dork with trap table if we get this far. */
-#define INSTANTIATE(table) \
- table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_one = SPARC_RD_PSR_L0; \
- table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_two = \
- SPARC_BRANCH((unsigned long) floppy_hardint, \
- (unsigned long) &table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_two);\
- table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_three = SPARC_RD_WIM_L3; \
- table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_four = SPARC_NOP;
-
- INSTANTIATE(sparc_ttable)
-
-#if defined CONFIG_SMP
- if (sparc_cpu_model != sparc_leon) {
- struct tt_entry *trap_table;
-
- trap_table = &trapbase_cpu1;
- INSTANTIATE(trap_table)
- trap_table = &trapbase_cpu2;
- INSTANTIATE(trap_table)
- trap_table = &trapbase_cpu3;
- INSTANTIATE(trap_table)
- }
-#endif
-#undef INSTANTIATE
- /*
- * XXX Correct thing whould be to flush only I- and D-cache lines
- * which contain the handler in question. But as of time of the
- * writing we have no CPU-neutral interface to fine-grained flushes.
- */
- flush_cache_all();
- return 0;
-}
-EXPORT_SYMBOL(sparc_floppy_request_irq);
-
-/*
- * These variables are used to access state from the assembler
- * interrupt handler, floppy_hardint, so we cannot put these in
- * the floppy driver image because that would not work in the
- * modular case.
- */
-volatile unsigned char *fdc_status;
-EXPORT_SYMBOL(fdc_status);
-
-char *pdma_vaddr;
-EXPORT_SYMBOL(pdma_vaddr);
-
-unsigned long pdma_size;
-EXPORT_SYMBOL(pdma_size);
-
-volatile int doing_pdma;
-EXPORT_SYMBOL(doing_pdma);
-
-char *pdma_base;
-EXPORT_SYMBOL(pdma_base);
-
-unsigned long pdma_areasize;
-EXPORT_SYMBOL(pdma_areasize);
-
-/* Use the generic irq support to call floppy_interrupt
- * which was setup using request_irq() in sparc_floppy_request_irq().
- * We only have one floppy interrupt so we do not need to check
- * for additional handlers being wired up by irq_link()
- */
-void sparc_floppy_irq(int irq, void *dev_id, struct pt_regs *regs)
-{
- struct pt_regs *old_regs;
-
- old_regs = set_irq_regs(regs);
- irq_enter();
- generic_handle_irq(floppy_irq);
- irq_exit();
- set_irq_regs(old_regs);
-}
-#endif
-
/* djhr
* This could probably be made indirect too and assigned in the CPU
* bits of the code. That would be much nicer I think and would also
diff --git a/arch/sparc/kernel/kernel.h b/arch/sparc/kernel/kernel.h
index 9cd09a3ef35f..c76e49032273 100644
--- a/arch/sparc/kernel/kernel.h
+++ b/arch/sparc/kernel/kernel.h
@@ -152,8 +152,6 @@ extern unsigned int real_irq_entry[];
extern unsigned int smp4d_ticker[];
extern unsigned int patchme_maybe_smp_msg[];
-void floppy_hardint(void);
-
/* trampoline_32.S */
extern unsigned long sun4m_cpu_startup;
extern unsigned long sun4d_cpu_startup;
--
2.27.0
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