aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorDavid S. Miller <davem@sunset.davemloft.net>2007-08-02 00:19:14 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-08-03 14:08:42 -0700
commit0a808a3131b2a6656475d82219f5e5d25edd7160 (patch)
tree12a4f0690bf01ccc9956ba974dd64237ee9f807c
parent3daadf33013a1c4d7abf4a65b24644cdd8ae896a (diff)
downloadlinux-stericsson-0a808a3131b2a6656475d82219f5e5d25edd7160.tar.gz
[SPARC32]: Fix modular build of floppy driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--arch/sparc/kernel/entry.S7
-rw-r--r--arch/sparc/kernel/irq.c84
-rw-r--r--arch/sparc/kernel/sparc_ksyms.c1
-rw-r--r--include/asm-sparc/floppy.h20
-rw-r--r--include/asm-sparc/irq.h7
5 files changed, 75 insertions, 44 deletions
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S
index eac38388f5fd..88d2cefd01be 100644
--- a/arch/sparc/kernel/entry.S
+++ b/arch/sparc/kernel/entry.S
@@ -1,7 +1,6 @@
-/* $Id: entry.S,v 1.170 2001/11/13 00:57:05 davem Exp $
- * arch/sparc/kernel/entry.S: Sparc trap low-level entry points.
+/* arch/sparc/kernel/entry.S: Sparc trap low-level entry points.
*
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1995, 2007 David S. Miller (davem@davemloft.net)
* Copyright (C) 1996 Eddie C. Dost (ecd@skynet.be)
* Copyright (C) 1996 Miguel de Icaza (miguel@nuclecu.unam.mx)
* Copyright (C) 1996-1999 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
@@ -129,7 +128,7 @@ trap_low:
RESTORE_ALL
#endif
-#ifdef CONFIG_BLK_DEV_FD
+#if defined(CONFIG_BLK_DEV_FD) || defined(CONFIG_BLK_DEV_FD_MODULE)
.text
.align 4
.globl floppy_hardint
diff --git a/arch/sparc/kernel/irq.c b/arch/sparc/kernel/irq.c
index 75b2240ad0f9..b76dc03fc318 100644
--- a/arch/sparc/kernel/irq.c
+++ b/arch/sparc/kernel/irq.c
@@ -351,34 +351,14 @@ void handler_irq(int irq, struct pt_regs * regs)
set_irq_regs(old_regs);
}
-#ifdef CONFIG_BLK_DEV_FD
-extern void floppy_interrupt(int irq, void *dev_id);
-
-void sparc_floppy_irq(int irq, void *dev_id, struct pt_regs *regs)
-{
- struct pt_regs *old_regs;
- int cpu = smp_processor_id();
-
- old_regs = set_irq_regs(regs);
- disable_pil_irq(irq);
- irq_enter();
- kstat_cpu(cpu).irqs[irq]++;
- floppy_interrupt(irq, dev_id);
- irq_exit();
- enable_pil_irq(irq);
- set_irq_regs(old_regs);
- // XXX Eek, it's totally changed with preempt_count() and such
- // if (softirq_pending(cpu))
- // do_softirq();
-}
-#endif
+#if defined(CONFIG_BLK_DEV_FD) || defined(CONFIG_BLK_DEV_FD_MODULE)
/* Fast IRQs on the Sparc can only have one routine attached to them,
* thus no sharing possible.
*/
-int request_fast_irq(unsigned int irq,
- irq_handler_t handler,
- unsigned long irqflags, const char *devname)
+static int request_fast_irq(unsigned int irq,
+ void (*handler)(void),
+ unsigned long irqflags, const char *devname)
{
struct irqaction *action;
unsigned long flags;
@@ -457,7 +437,6 @@ int request_fast_irq(unsigned int irq,
*/
flush_cache_all();
- action->handler = handler;
action->flags = irqflags;
cpus_clear(action->mask);
action->name = devname;
@@ -475,6 +454,61 @@ out:
return ret;
}
+/* 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);
+
+extern void floppy_hardint(void);
+
+static irqreturn_t (*floppy_irq_handler)(int irq, void *dev_id);
+
+void sparc_floppy_irq(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct pt_regs *old_regs;
+ int cpu = smp_processor_id();
+
+ old_regs = set_irq_regs(regs);
+ disable_pil_irq(irq);
+ irq_enter();
+ kstat_cpu(cpu).irqs[irq]++;
+ floppy_irq_handler(irq, dev_id);
+ irq_exit();
+ enable_pil_irq(irq);
+ set_irq_regs(old_regs);
+ // XXX Eek, it's totally changed with preempt_count() and such
+ // if (softirq_pending(cpu))
+ // do_softirq();
+}
+
+int sparc_floppy_request_irq(int irq, unsigned long flags,
+ irqreturn_t (*irq_handler)(int irq, void *))
+{
+ floppy_irq_handler = irq_handler;
+ return request_fast_irq(irq, floppy_hardint, flags, "floppy");
+}
+EXPORT_SYMBOL(sparc_floppy_request_irq);
+
+#endif
+
int request_irq(unsigned int irq,
irq_handler_t handler,
unsigned long irqflags, const char * devname, void *dev_id)
diff --git a/arch/sparc/kernel/sparc_ksyms.c b/arch/sparc/kernel/sparc_ksyms.c
index 7b4abde43028..ef647acc479e 100644
--- a/arch/sparc/kernel/sparc_ksyms.c
+++ b/arch/sparc/kernel/sparc_ksyms.c
@@ -143,7 +143,6 @@ EXPORT_SYMBOL(mstk48t02_regs);
EXPORT_SYMBOL(set_auxio);
EXPORT_SYMBOL(get_auxio);
#endif
-EXPORT_SYMBOL(request_fast_irq);
EXPORT_SYMBOL(io_remap_pfn_range);
/* P3: iounit_xxx may be needed, sun4d users */
/* EXPORT_SYMBOL(iounit_map_dma_init); */
diff --git a/include/asm-sparc/floppy.h b/include/asm-sparc/floppy.h
index 28ce2b9c3da8..acd06d8ff70a 100644
--- a/include/asm-sparc/floppy.h
+++ b/include/asm-sparc/floppy.h
@@ -48,7 +48,7 @@ struct sun_flpy_controller {
/* You'll only ever find one controller on a SparcStation anyways. */
static struct sun_flpy_controller *sun_fdc = NULL;
-volatile unsigned char *fdc_status;
+extern volatile unsigned char *fdc_status;
struct sun_floppy_ops {
unsigned char (*fd_inb)(int port);
@@ -225,13 +225,13 @@ static void sun_82077_fd_outb(unsigned char value, int port)
* 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;
+extern char *pdma_vaddr;
+extern unsigned long pdma_size;
+extern volatile int doing_pdma;
/* This is software state */
-char *pdma_base = NULL;
-unsigned long pdma_areasize;
+extern char *pdma_base;
+extern unsigned long pdma_areasize;
/* Common routines to all controller types on the Sparc. */
static __inline__ void virtual_dma_init(void)
@@ -281,7 +281,8 @@ static __inline__ void sun_fd_enable_dma(void)
}
/* Our low-level entry point in arch/sparc/kernel/entry.S */
-irqreturn_t floppy_hardint(int irq, void *unused);
+extern int sparc_floppy_request_irq(int irq, unsigned long flags,
+ irqreturn_t (*irq_handler)(int irq, void *));
static int sun_fd_request_irq(void)
{
@@ -290,8 +291,9 @@ static int sun_fd_request_irq(void)
if(!once) {
once = 1;
- error = request_fast_irq(FLOPPY_IRQ, floppy_hardint,
- IRQF_DISABLED, "floppy");
+ error = sparc_floppy_request_irq(FLOPPY_IRQ,
+ IRQF_DISABLED,
+ floppy_interrupt);
return ((error == 0) ? 0 : -1);
} else return 0;
}
diff --git a/include/asm-sparc/irq.h b/include/asm-sparc/irq.h
index 61fb99643afd..fe205cc444b8 100644
--- a/include/asm-sparc/irq.h
+++ b/include/asm-sparc/irq.h
@@ -1,7 +1,6 @@
-/* $Id: irq.h,v 1.32 2000/08/26 02:42:28 anton Exp $
- * irq.h: IRQ registers on the Sparc.
+/* irq.h: IRQ registers on the Sparc.
*
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1995, 2007 David S. Miller (davem@davemloft.net)
*/
#ifndef _SPARC_IRQ_H
@@ -13,6 +12,4 @@
#define irq_canonicalize(irq) (irq)
-extern int request_fast_irq(unsigned int irq, irq_handler_t handler, unsigned long flags, __const__ char *devname);
-
#endif