sh: SE7206 build fixes.

A number of API changes happened underneath the 7206 patches, update
for everything that broke.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/boards/se/7206/irq.c

@@ -6,12 +6,10 @@
  * Hitachi SolutionEngine Support.
  *
  */
-
-#include <linux/config.h>
 #include <linux/init.h>
 #include <linux/irq.h>
-#include <asm/irq.h>
-#include <asm/io.h>
+#include <linux/io.h>
+#include <linux/irq.h>
 #include <asm/se7206.h>
 
 #define INTSTS0 0x31800000
@@ -20,9 +18,6 @@
 #define INTMSK1 0x31800006
 #define INTSEL  0x31800008
 
-/* shutdown is same as "disable" */
-#define shutdown_se7206_irq disable_se7206_irq
-
 static void disable_se7206_irq(unsigned int irq)
 {
 	unsigned short val;
@@ -84,18 +79,7 @@ static void enable_se7206_irq(unsigned int irq)
 	ctrl_outw(msk1, INTMSK1);
 }
 
-static unsigned int startup_se7206_irq(unsigned int irq)
-{
-	enable_se7206_irq(irq);
-	return 0; /* never anything pending */
-}
-
-static void ack_se7206_irq(unsigned int irq)
-{
-	disable_se7206_irq(irq);
-}
-
-static void end_se7206_irq(unsigned int irq)
+static void eoi_se7206_irq(unsigned int irq)
 {
 	unsigned short sts0,sts1;
 
@@ -121,20 +105,19 @@ static void end_se7206_irq(unsigned int irq)
 	ctrl_outw(sts1, INTSTS1);
 }
 
-static struct hw_interrupt_type se7206_irq_type = {
-	.typename =  "SE7206 FPGA-IRQ",
-	.startup = startup_se7206_irq,
-	.shutdown = shutdown_se7206_irq,
-	.enable = enable_se7206_irq,
-	.disable = disable_se7206_irq,
-	.ack = ack_se7206_irq,
-	.end = end_se7206_irq,
+static struct irq_chip se7206_irq_chip __read_mostly = {
+	.name		= "SE7206-FPGA-IRQ",
+	.mask		= disable_se7206_irq,
+	.unmask		= enable_se7206_irq,
+	.mask_ack	= disable_se7206_irq,
+	.eoi		= eoi_se7206_irq,
 };
 
 static void make_se7206_irq(unsigned int irq)
 {
 	disable_irq_nosync(irq);
-	irq_desc[irq].handler = &se7206_irq_type;
+	set_irq_chip_and_handler_name(irq, &se7206_irq_chip,
+				      handle_level_irq, "level");
 	disable_se7206_irq(irq);
 }
 
@@ -154,8 +137,3 @@ void __init init_se7206_IRQ(void)
 	/* IRQ0=LAN, IRQ1=ATA, IRQ3=SLT,PCM */
 	ctrl_outw(0x0001,INTSEL);
 }
-
-int se7206_irq_demux(int irq)
-{
-	return irq;
-}

arch/sh/boards/se/7206/setup.c

@@ -10,8 +10,8 @@
 
 #include <linux/init.h>
 #include <linux/platform_device.h>
-#include <asm/io.h>
 #include <asm/se7206.h>
+#include <asm/io.h>
 #include <asm/machvec.h>
 
 static struct resource smc91x_resources[] = {
@@ -72,7 +72,6 @@ struct sh_machine_vector mv_se __initmv = {
 	.mv_outsl		= se7206_outsl,
 
 	.mv_init_irq		= init_se7206_IRQ,
-	.mv_irq_demux		= se7206_irq_demux,
 #ifdef CONFIG_HEARTBEAT
 	.mv_heartbeat		= heartbeat_se,
 #endif

arch/sh/kernel/sys_sh.c

@@ -50,6 +50,7 @@ unsigned long shm_align_mask = PAGE_SIZE - 1;	/* Sane caches */
 
 EXPORT_SYMBOL(shm_align_mask);
 
+#ifdef CONFIG_MMU
 /*
  * To avoid cache aliases, we map the shared page with same color.
  */
@@ -135,6 +136,7 @@ full_search:
 			addr = COLOUR_ALIGN(addr, pgoff);
 	}
 }
+#endif /* CONFIG_MMU */
 
 static inline long
 do_mmap2(unsigned long addr, unsigned long len, unsigned long prot, 

arch/sh/kernel/timers/timer-cmt.c

@@ -96,8 +96,7 @@ static unsigned long cmt_timer_get_offset(void)
 	return count;
 }
 
-static irqreturn_t cmt_timer_interrupt(int irq, void *dev_id,
-				       struct pt_regs *regs)
+static irqreturn_t cmt_timer_interrupt(int irq, void *dev_id)
 {
 	unsigned long timer_status;
 
@@ -114,7 +113,7 @@ static irqreturn_t cmt_timer_interrupt(int irq, void *dev_id,
 	 * locally disabled. -arca
 	 */
 	write_seqlock(&xtime_lock);
-	handle_timer_tick(regs);
+	handle_timer_tick();
 	write_sequnlock(&xtime_lock);
 
 	return IRQ_HANDLED;
@@ -123,62 +122,10 @@ static irqreturn_t cmt_timer_interrupt(int irq, void *dev_id,
 static struct irqaction cmt_irq = {
 	.name		= "timer",
 	.handler	= cmt_timer_interrupt,
-	.flags		= SA_INTERRUPT,
+	.flags		= IRQF_DISABLED,
 	.mask		= CPU_MASK_NONE,
 };
 
-/*
- * Hah!  We'll see if this works (switching from usecs to nsecs).
- */
-static unsigned long cmt_timer_get_frequency(void)
-{
-	u32 freq;
-	struct timespec ts1, ts2;
-	unsigned long diff_nsec;
-	unsigned long factor;
-
-	/* Setup the timer:  We don't want to generate interrupts, just
-	 * have it count down at its natural rate.
-	 */
-	
-	ctrl_outw(ctrl_inw(CMT_CMSTR) & ~0x01, CMT_CMSTR);
-	ctrl_outw(CMT_CMCSR_CALIB, CMT_CMCSR_0);
-	ctrl_outw(0xffff, CMT_CMCOR_0);
-	ctrl_outw(0xffff, CMT_CMCNT_0);
-
-	rtc_sh_get_time(&ts2);
-
-	do {
-		rtc_sh_get_time(&ts1);
-	} while (ts1.tv_nsec == ts2.tv_nsec && ts1.tv_sec == ts2.tv_sec);
-
-	/* actually start the timer */
-	ctrl_outw(ctrl_inw(CMT_CMSTR) | 0x01, CMT_CMSTR);
-
-	do {
-		rtc_sh_get_time(&ts2);
-	} while (ts1.tv_nsec == ts2.tv_nsec && ts1.tv_sec == ts2.tv_sec);
-
-	freq = 0xffff - ctrl_inw(CMT_CMCNT_0);
-	if (ts2.tv_nsec < ts1.tv_nsec) {
-		ts2.tv_nsec += 1000000000;
-		ts2.tv_sec--;
-	}
-
-	diff_nsec = (ts2.tv_sec - ts1.tv_sec) * 1000000000 + (ts2.tv_nsec - ts1.tv_nsec);
-
-	/* this should work well if the RTC has a precision of n Hz, where
-	 * n is an integer.  I don't think we have to worry about the other
-	 * cases. */
-	factor = (1000000000 + diff_nsec/2) / diff_nsec;
-
-	if (factor * diff_nsec > 1100000000 ||
-	    factor * diff_nsec <  900000000)
-		panic("weird RTC (diff_nsec %ld)", diff_nsec);
-
-	return freq * factor;
-}
-
 static void cmt_clk_init(struct clk *clk)
 {
 	u8 divisor = CMT_CMCSR_INIT & 0x3;
@@ -245,12 +192,12 @@ struct sys_timer_ops cmt_timer_ops = {
 	.init		= cmt_timer_init,
 	.start		= cmt_timer_start,
 	.stop		= cmt_timer_stop,
-	.get_frequency	= cmt_timer_get_frequency,
+#ifndef CONFIG_GENERIC_TIME
 	.get_offset	= cmt_timer_get_offset,
+#endif
 };
 
 struct sys_timer cmt_timer = {
 	.name	= "cmt",
 	.ops	= &cmt_timer_ops,
 };
-

arch/sh/kernel/timers/timer-mtu2.c

@@ -98,8 +98,7 @@ static unsigned long mtu2_timer_get_offset(void)
 	return count;
 }
 
-static irqreturn_t mtu2_timer_interrupt(int irq, void *dev_id,
-				       struct pt_regs *regs)
+static irqreturn_t mtu2_timer_interrupt(int irq, void *dev_id)
 {
 	unsigned long timer_status;
 
@@ -110,7 +109,7 @@ static irqreturn_t mtu2_timer_interrupt(int irq, void *dev_id,
 
 	/* Do timer tick */
 	write_seqlock(&xtime_lock);
-	handle_timer_tick(regs);
+	handle_timer_tick();
 	write_sequnlock(&xtime_lock);
 
 	return IRQ_HANDLED;
@@ -119,62 +118,10 @@ static irqreturn_t mtu2_timer_interrupt(int irq, void *dev_id,
 static struct irqaction mtu2_irq = {
 	.name		= "timer",
 	.handler	= mtu2_timer_interrupt,
-	.flags		= SA_INTERRUPT,
+	.flags		= IRQF_DISABLED,
 	.mask		= CPU_MASK_NONE,
 };
 
-/*
- * Hah!  We'll see if this works (switching from usecs to nsecs).
- */
-static unsigned long mtu2_timer_get_frequency(void)
-{
-	u32 freq;
-	struct timespec ts1, ts2;
-	unsigned long diff_nsec;
-	unsigned long factor;
-
-	/* Setup the timer:  We don't want to generate interrupts, just
-	 * have it count down at its natural rate.
-	 */
-	
-	ctrl_outb(ctrl_inb(MTU2_TSTR) & ~MTU2_TSTR_CST1, MTU2_TSTR);
-	ctrl_outb(MTU2_TCR_CALIB, MTU2_TCR_1);
-	ctrl_outb(ctrl_inb(MTU2_TIER_1) & ~MTU2_TIER_TGIEA, MTU2_TIER_1);
-	ctrl_outw(0, MTU2_TCNT_1);
-
-	rtc_get_time(&ts2);
-
-	do {
-		rtc_get_time(&ts1);
-	} while (ts1.tv_nsec == ts2.tv_nsec && ts1.tv_sec == ts2.tv_sec);
-
-	/* actually start the timer */
-	ctrl_outw(ctrl_inw(CMT_CMSTR) | 0x01, CMT_CMSTR);
-
-	do {
-		rtc_get_time(&ts2);
-	} while (ts1.tv_nsec == ts2.tv_nsec && ts1.tv_sec == ts2.tv_sec);
-
-	freq = ctrl_inw(MTU2_TCNT_0);
-	if (ts2.tv_nsec < ts1.tv_nsec) {
-		ts2.tv_nsec += 1000000000;
-		ts2.tv_sec--;
-	}
-
-	diff_nsec = (ts2.tv_sec - ts1.tv_sec) * 1000000000 + (ts2.tv_nsec - ts1.tv_nsec);
-
-	/* this should work well if the RTC has a precision of n Hz, where
-	 * n is an integer.  I don't think we have to worry about the other
-	 * cases. */
-	factor = (1000000000 + diff_nsec/2) / diff_nsec;
-
-	if (factor * diff_nsec > 1100000000 ||
-	    factor * diff_nsec <  900000000)
-		panic("weird RTC (diff_nsec %ld)", diff_nsec);
-
-	return freq * factor;
-}
-
 static unsigned int divisors[] = { 1, 4, 16, 64, 1, 1, 256 };
 
 static void mtu2_clk_init(struct clk *clk)
@@ -250,8 +197,9 @@ struct sys_timer_ops mtu2_timer_ops = {
 	.init		= mtu2_timer_init,
 	.start		= mtu2_timer_start,
 	.stop		= mtu2_timer_stop,
-	.get_frequency	= mtu2_timer_get_frequency,
+#ifndef CONFIG_GENERIC_TIME
 	.get_offset	= mtu2_timer_get_offset,
+#endif
 };
 
 struct sys_timer mtu2_timer = {

arch/sh/kernel/traps.c

@@ -107,8 +107,6 @@ static inline void die_if_kernel(const char *str, struct pt_regs *regs,
 		die(str, regs, err);
 }
 
-static int handle_unaligned_notify_count = 10;
-
 /*
  * try and fix up kernelspace address errors
  * - userspace errors just cause EFAULT to be returned, resulting in SEGV
@@ -347,6 +345,13 @@ static inline int handle_unaligned_delayslot(struct pt_regs *regs)
 #define SH_PC_8BIT_OFFSET(instr) ((((signed char)(instr))*2) + 4)
 #define SH_PC_12BIT_OFFSET(instr) ((((signed short)(instr<<4))>>3) + 4)
 
+/*
+ * XXX: SH-2A needs this too, but it needs an overhaul thanks to mixed 32-bit
+ * opcodes..
+ */
+#ifndef CONFIG_CPU_SH2A
+static int handle_unaligned_notify_count = 10;
+
 static int handle_unaligned_access(u16 instruction, struct pt_regs *regs)
 {
 	u_int rm;
@@ -483,6 +488,7 @@ static int handle_unaligned_access(u16 instruction, struct pt_regs *regs)
 		regs->pc += 2;
 	return ret;
 }
+#endif /* CONFIG_CPU_SH2A */
 
 #ifdef CONFIG_CPU_HAS_SR_RB
 #define lookup_exception_vector(x)	\
@@ -501,8 +507,10 @@ asmlinkage void do_address_error(struct pt_regs *regs,
 {
 	unsigned long error_code = 0;
 	mm_segment_t oldfs;
+#ifndef CONFIG_CPU_SH2A
 	u16 instruction;
 	int tmp;
+#endif
 
 	/* Intentional ifdef */
 #ifdef CONFIG_CPU_HAS_SR_RB

include/asm-sh/cpu-sh2/timer.h

@@ -0,0 +1,6 @@
+#ifndef __ASM_CPU_SH2_TIMER_H
+#define __ASM_CPU_SH2_TIMER_H
+
+/* Nothing needed yet */
+
+#endif /* __ASM_CPU_SH2_TIMER_H */

include/asm-sh/se7206.h

@@ -0,0 +1,13 @@
+#ifndef __ASM_SH_SE7206_H
+#define __ASM_SH_SE7206_H
+
+#define PA_SMSC		0x30000000
+#define PA_MRSHPC	0x34000000
+#define PA_LED		0x31400000
+
+void init_se7206_IRQ(void);
+
+#define __IO_PREFIX	se7206
+#include <asm/io_generic.h>
+
+#endif /* __ASM_SH_SE7206_H */

include/asm-sh/timer.h

@@ -22,7 +22,7 @@ struct sys_timer {
 
 #define TICK_SIZE (tick_nsec / 1000)
 
-extern struct sys_timer tmu_timer;
+extern struct sys_timer tmu_timer, cmt_timer, mtu2_timer;
 extern struct sys_timer *sys_timer;
 
 #ifndef CONFIG_GENERIC_TIME