Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: use the new byteorder headers
  fbcon: Protect free_irq() by MACH_IS_ATARI check
  fbcon: remove broken mac vbl handler
  m68k: fix trigraph ignored warning in setox.S
  macfb annotations and compiler warning fix
  m68k: mac baboon interrupt enable/disable
  m68k: machw.h cleanup
  m68k: Mac via cleanup and commentry
  m68k: Reinstate mac rtc

8 files changed, 79 insertions, 77 deletions

diff --git a/arch/m68k/fpsp040/setox.S b/arch/m68k/fpsp040/setox.S
index 145af5447581..f1acf7e36d6b 100644
--- a/arch/m68k/fpsp040/setox.S
+++ b/arch/m68k/fpsp040/setox.S
@@ -36,9 +36,9 @@
 |	depending on their values, the program may run faster or slower --
 |	but no worse than 10% slower even in the extreme cases.
 |
-|	The program setoxm1 takes approximately ???/??? cycles for input
+|	The program setoxm1 takes approximately ??? / ??? cycles for input
 |	argument X, 0.25 <= |X| < 70log2. For |X| < 0.25, it takes
-|	approximately ???/??? cycles. For the less common arguments,
+|	approximately ??? / ??? cycles. For the less common arguments,
 |	depending on their values, the program may run faster or slower --
 |	but no worse than 10% slower even in the extreme cases.
 |
diff --git a/arch/m68k/mac/baboon.c b/arch/m68k/mac/baboon.c
index c7b25b0aacff..245d16d078ad 100644
--- a/arch/m68k/mac/baboon.c
+++ b/arch/m68k/mac/baboon.c
@@ -18,11 +18,14 @@
 #include <asm/macints.h>
 #include <asm/mac_baboon.h>
 
-/* #define DEBUG_BABOON */
 /* #define DEBUG_IRQS */
 
+extern void mac_enable_irq(unsigned int);
+extern void mac_disable_irq(unsigned int);
+
 int baboon_present;
 static volatile struct baboon *baboon;
+static unsigned char baboon_disabled;
 
 #if 0
 extern int macide_ack_intr(struct ata_channel *);
@@ -88,34 +91,51 @@ static irqreturn_t baboon_irq(int irq, void *dev_id)
 
 void __init baboon_register_interrupts(void)
 {
-	request_irq(IRQ_NUBUS_C, baboon_irq, IRQ_FLG_LOCK|IRQ_FLG_FAST,
-		    "baboon", (void *) baboon);
+	baboon_disabled = 0;
+	request_irq(IRQ_NUBUS_C, baboon_irq, 0, "baboon", (void *)baboon);
 }
 
-void baboon_irq_enable(int irq) {
+/*
+ * The means for masking individual baboon interrupts remains a mystery, so
+ * enable the umbrella interrupt only when no baboon interrupt is disabled.
+ */
+
+void baboon_irq_enable(int irq)
+{
+	int irq_idx = IRQ_IDX(irq);
+
 #ifdef DEBUG_IRQUSE
 	printk("baboon_irq_enable(%d)\n", irq);
 #endif
-	/* FIXME: figure out how to mask and unmask baboon interrupt sources */
-	enable_irq(IRQ_NUBUS_C);
+
+	baboon_disabled &= ~(1 << irq_idx);
+	if (!baboon_disabled)
+		mac_enable_irq(IRQ_NUBUS_C);
 }
 
-void baboon_irq_disable(int irq) {
+void baboon_irq_disable(int irq)
+{
+	int irq_idx = IRQ_IDX(irq);
+
 #ifdef DEBUG_IRQUSE
 	printk("baboon_irq_disable(%d)\n", irq);
 #endif
-	disable_irq(IRQ_NUBUS_C);
+
+	baboon_disabled |= 1 << irq_idx;
+	if (baboon_disabled)
+		mac_disable_irq(IRQ_NUBUS_C);
 }
 
-void baboon_irq_clear(int irq) {
-	int irq_idx	= IRQ_IDX(irq);
+void baboon_irq_clear(int irq)
+{
+	int irq_idx = IRQ_IDX(irq);
 
 	baboon->mb_ifr &= ~(1 << irq_idx);
 }
 
 int baboon_irq_pending(int irq)
 {
-	int irq_idx	= IRQ_IDX(irq);
+	int irq_idx = IRQ_IDX(irq);
 
 	return baboon->mb_ifr & (1 << irq_idx);
 }
diff --git a/arch/m68k/mac/config.c b/arch/m68k/mac/config.c
index c45e18449f32..8819b97be324 100644
--- a/arch/m68k/mac/config.c
+++ b/arch/m68k/mac/config.c
@@ -162,10 +162,7 @@ void __init config_mac(void)
 	mach_init_IRQ = mac_init_IRQ;
 	mach_get_model = mac_get_model;
 	mach_gettimeoffset = mac_gettimeoffset;
-#warning move to adb/via init
-#if 0
 	mach_hwclk = mac_hwclk;
-#endif
 	mach_set_clock_mmss = mac_set_clock_mmss;
 	mach_reset = mac_reset;
 	mach_halt = mac_poweroff;
diff --git a/arch/m68k/mac/debug.c b/arch/m68k/mac/debug.c
index 2165740786a5..65dd77a742a3 100644
--- a/arch/m68k/mac/debug.c
+++ b/arch/m68k/mac/debug.c
@@ -24,7 +24,6 @@
 #define BOOTINFO_COMPAT_1_0
 #include <asm/setup.h>
 #include <asm/bootinfo.h>
-#include <asm/machw.h>
 #include <asm/macints.h>
 
 extern unsigned long mac_videobase;
diff --git a/arch/m68k/mac/macints.c b/arch/m68k/mac/macints.c
index ecddac4a02b9..82e560c076ce 100644
--- a/arch/m68k/mac/macints.c
+++ b/arch/m68k/mac/macints.c
@@ -127,7 +127,6 @@
 #include <asm/irq.h>
 #include <asm/traps.h>
 #include <asm/bootinfo.h>
-#include <asm/machw.h>
 #include <asm/macintosh.h>
 #include <asm/mac_via.h>
 #include <asm/mac_psc.h>
@@ -215,8 +214,8 @@ irqreturn_t mac_debug_handler(int, void *);
 
 /* #define DEBUG_MACINTS */
 
-static void mac_enable_irq(unsigned int irq);
-static void mac_disable_irq(unsigned int irq);
+void mac_enable_irq(unsigned int irq);
+void mac_disable_irq(unsigned int irq);
 
 static struct irq_controller mac_irq_controller = {
 	.name		= "mac",
@@ -275,7 +274,7 @@ void __init mac_init_IRQ(void)
  * These routines are just dispatchers to the VIA/OSS/PSC routines.
  */
 
-static void mac_enable_irq(unsigned int irq)
+void mac_enable_irq(unsigned int irq)
 {
 	int irq_src = IRQ_SRC(irq);
 
@@ -308,7 +307,7 @@ static void mac_enable_irq(unsigned int irq)
 	}
 }
 
-static void mac_disable_irq(unsigned int irq)
+void mac_disable_irq(unsigned int irq)
 {
 	int irq_src = IRQ_SRC(irq);
 
diff --git a/arch/m68k/mac/misc.c b/arch/m68k/mac/misc.c
index 56d1f5676ade..a44c7086ab39 100644
--- a/arch/m68k/mac/misc.c
+++ b/arch/m68k/mac/misc.c
@@ -93,7 +93,7 @@ static void cuda_write_pram(int offset, __u8 data)
 #define cuda_write_pram NULL
 #endif
 
-#ifdef CONFIG_ADB_PMU68K
+#if 0 /* def CONFIG_ADB_PMU68K */
 static long pmu_read_time(void)
 {
 	struct adb_request req;
@@ -148,7 +148,7 @@ static void pmu_write_pram(int offset, __u8 data)
 #define pmu_write_pram NULL
 #endif
 
-#ifdef CONFIG_ADB_MACIISI
+#if 0 /* def CONFIG_ADB_MACIISI */
 extern int maciisi_request(struct adb_request *req,
 			void (*done)(struct adb_request *), int nbytes, ...);
 
@@ -717,13 +717,18 @@ int mac_hwclk(int op, struct rtc_time *t)
 		unmktime(now, 0,
 			 &t->tm_year, &t->tm_mon, &t->tm_mday,
 			 &t->tm_hour, &t->tm_min, &t->tm_sec);
+#if 0
 		printk("mac_hwclk: read %04d-%02d-%-2d %02d:%02d:%02d\n",
-			t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);
+			t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
+			t->tm_hour, t->tm_min, t->tm_sec);
+#endif
 	} else { /* write */
+#if 0
 		printk("mac_hwclk: tried to write %04d-%02d-%-2d %02d:%02d:%02d\n",
-			t->tm_year + 1900, t->tm_mon + 1, t->tm_mday, t->tm_hour, t->tm_min, t->tm_sec);
+			t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
+			t->tm_hour, t->tm_min, t->tm_sec);
+#endif
 
-#if 0	/* it trashes my rtc */
 		now = mktime(t->tm_year + 1900, t->tm_mon + 1, t->tm_mday,
 			     t->tm_hour, t->tm_min, t->tm_sec);
 
@@ -742,7 +747,6 @@ int mac_hwclk(int op, struct rtc_time *t)
 		case MAC_ADB_IISI:
 			maciisi_write_time(now);
 		}
-#endif
 	}
 	return 0;
 }
diff --git a/arch/m68k/mac/oss.c b/arch/m68k/mac/oss.c
index 43d83e054b8e..8426501119ca 100644
--- a/arch/m68k/mac/oss.c
+++ b/arch/m68k/mac/oss.c
@@ -21,7 +21,6 @@
 #include <linux/init.h>
 
 #include <asm/bootinfo.h>
-#include <asm/machw.h>
 #include <asm/macintosh.h>
 #include <asm/macints.h>
 #include <asm/mac_via.h>
diff --git a/arch/m68k/mac/via.c b/arch/m68k/mac/via.c
index 1bdb03c73c0f..f01d418e64fe 100644
--- a/arch/m68k/mac/via.c
+++ b/arch/m68k/mac/via.c
@@ -32,15 +32,10 @@
 #include <asm/bootinfo.h>
 #include <asm/macintosh.h>
 #include <asm/macints.h>
-#include <asm/machw.h>
 #include <asm/mac_via.h>
 #include <asm/mac_psc.h>
 
 volatile __u8 *via1, *via2;
-#if 0
-/* See note in mac_via.h about how this is possibly not useful */
-volatile long *via_memory_bogon=(long *)&via_memory_bogon;
-#endif
 int rbv_present;
 int via_alt_mapping;
 EXPORT_SYMBOL(via_alt_mapping);
@@ -66,7 +61,7 @@ static int gIER,gIFR,gBufA,gBufB;
 #define MAC_CLOCK_LOW		(MAC_CLOCK_TICK&0xFF)
 #define MAC_CLOCK_HIGH		(MAC_CLOCK_TICK>>8)
 
-/* To disable a NuBus slot on Quadras we make the slot IRQ lines outputs, set
+/* To disable a NuBus slot on Quadras we make that slot IRQ line an output set
  * high. On RBV we just use the slot interrupt enable register. On Macs with
  * genuine VIA chips we must use nubus_disabled to keep track of disabled slot
  * interrupts. When any slot IRQ is disabled we mask the (edge triggered) CA1
@@ -180,7 +175,7 @@ void __init via_init(void)
 	via1[vT1CH] = 0;
 	via1[vT2CL] = 0;
 	via1[vT2CH] = 0;
-	via1[vACR] &= 0x3F;
+	via1[vACR] &= ~0xC0; /* setup T1 timer with no PB7 output */
 	via1[vACR] &= ~0x03; /* disable port A & B latches */
 
 	/*
@@ -203,40 +198,41 @@ void __init via_init(void)
 
 	/* Everything below this point is VIA2/RBV only... */
 
-	if (oss_present) return;
+	if (oss_present)
+		return;
 
-#if 1
 	/* Some machines support an alternate IRQ mapping that spreads  */
 	/* Ethernet and Sound out to their own autolevel IRQs and moves */
 	/* VIA1 to level 6. A/UX uses this mapping and we do too.  Note */
 	/* that the IIfx emulates this alternate mapping using the OSS. */
 
-	switch(macintosh_config->ident) {
-		case MAC_MODEL_P475:
-		case MAC_MODEL_P475F:
-		case MAC_MODEL_P575:
-		case MAC_MODEL_Q605:
-		case MAC_MODEL_Q605_ACC:
-		case MAC_MODEL_C610:
-		case MAC_MODEL_Q610:
-		case MAC_MODEL_Q630:
-		case MAC_MODEL_C650:
-		case MAC_MODEL_Q650:
-		case MAC_MODEL_Q700:
-		case MAC_MODEL_Q800:
-		case MAC_MODEL_Q900:
-		case MAC_MODEL_Q950:
+	via_alt_mapping = 0;
+	if (macintosh_config->via_type == MAC_VIA_QUADRA)
+		switch (macintosh_config->ident) {
+		case MAC_MODEL_C660:
+		case MAC_MODEL_Q840:
+			/* not applicable */
+			break;
+		case MAC_MODEL_P588:
+		case MAC_MODEL_TV:
+		case MAC_MODEL_PB140:
+		case MAC_MODEL_PB145:
+		case MAC_MODEL_PB160:
+		case MAC_MODEL_PB165:
+		case MAC_MODEL_PB165C:
+		case MAC_MODEL_PB170:
+		case MAC_MODEL_PB180:
+		case MAC_MODEL_PB180C:
+		case MAC_MODEL_PB190:
+		case MAC_MODEL_PB520:
+			/* not yet tested */
+			break;
+		default:
 			via_alt_mapping = 1;
 			via1[vDirB] |= 0x40;
 			via1[vBufB] &= ~0x40;
 			break;
-		default:
-			via_alt_mapping = 0;
-			break;
-	}
-#else
-	via_alt_mapping = 0;
-#endif
+		}
 
 	/*
 	 * Now initialize VIA2. For RBV we just kill all interrupts;
@@ -252,14 +248,17 @@ void __init via_init(void)
 		via2[vT1CH] = 0;
 		via2[vT2CL] = 0;
 		via2[vT2CH] = 0;
-		via2[vACR] &= 0x3F;
+		via2[vACR] &= ~0xC0; /* setup T1 timer with no PB7 output */
 		via2[vACR] &= ~0x03; /* disable port A & B latches */
 	}
 
 	/*
-	 * Set vPCR for SCSI interrupts (but not on RBV)
+	 * Set vPCR for control line interrupts (but not on RBV)
 	 */
 	if (!rbv_present) {
+		/* For all VIA types, CA1 (SLOTS IRQ) and CB1 (ASC IRQ)
+		 * are made negative edge triggered here.
+		 */
 		if (macintosh_config->scsi_type == MAC_SCSI_OLD) {
 			/* CB2 (IRQ) indep. input, positive edge */
 			/* CA2 (DRQ) indep. input, positive edge */
@@ -466,21 +465,6 @@ irqreturn_t via1_irq(int irq, void *dev_id)
 		++irq_num;
 		irq_bit <<= 1;
 	} while (events >= irq_bit);
-
-#if 0 /* freakin' pmu is doing weird stuff */
-	if (!oss_present) {
-		/* This (still) seems to be necessary to get IDE
-		   working.  However, if you enable VBL interrupts,
-		   you're screwed... */
-		/* FIXME: should we check the SLOTIRQ bit before
-                   pulling this stunt? */
-		/* No, it won't be set. that's why we're doing this. */
-		via_irq_disable(IRQ_MAC_NUBUS);
-		via_irq_clear(IRQ_MAC_NUBUS);
-		m68k_handle_int(IRQ_MAC_NUBUS);
-		via_irq_enable(IRQ_MAC_NUBUS);
-	}
-#endif
 	return IRQ_HANDLED;
 }