strip the kernel version suffix from target directories, except for brcm-2.4 (the -2.4 will be included in the board name here). CONFIG_LINUX_<ver>_<board> becomes CONFIG_TARGET_<board>, same for profiles.

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8653 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 264 insertions, 0 deletions

diff --git a/target/linux/rb532/files/arch/mips/rb500/irq.c b/target/linux/rb532/files/arch/mips/rb500/irq.c
new file mode 100644
index 0000000000..47521c7c57
--- /dev/null
+++ b/target/linux/rb532/files/arch/mips/rb500/irq.c
@@ -0,0 +1,264 @@
+/*
+ * BRIEF MODULE DESCRIPTION
+ *	RC32434 interrupt routines.
+ *
+ * Copyright 2002 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc.
+ *		stevel@mvista.com or source@mvista.com
+ *
+ *  This program is free software; you can redistribute	 it and/or modify it
+ *  under  the terms of	 the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the	License, or (at your
+ *  option) any later version.
+ *
+ *  THIS  SOFTWARE  IS PROVIDED	  ``AS	IS'' AND   ANY	EXPRESS OR IMPLIED
+ *  WARRANTIES,	  INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
+ *  NO	EVENT  SHALL   THE AUTHOR  BE	 LIABLE FOR ANY	  DIRECT, INDIRECT,
+ *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ *  NOT LIMITED	  TO, PROCUREMENT OF  SUBSTITUTE GOODS	OR SERVICES; LOSS OF
+ *  USE, DATA,	OR PROFITS; OR	BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN	 CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  You should have received a copy of the  GNU General Public License along
+ *  with this program; if not, write  to the Free Software Foundation, Inc.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/kernel_stat.h>
+#include <linux/module.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/timex.h>
+#include <linux/slab.h>
+#include <linux/random.h>
+#include <linux/delay.h>
+
+#include <asm/bitops.h>
+#include <asm/bootinfo.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/time.h>
+#include <asm/mipsregs.h>
+#include <asm/system.h>
+#include <asm/rc32434/rc32434.h>
+#include <asm/rc32434/gpio.h>
+
+extern void set_debug_traps(void);
+extern irq_cpustat_t irq_stat [NR_CPUS];
+unsigned int local_bh_count[NR_CPUS];
+unsigned int local_irq_count[NR_CPUS];
+
+static unsigned int startup_irq(unsigned int irq);
+static void rb500_end_irq(unsigned int irq_nr);
+static void mask_and_ack_irq(unsigned int irq_nr);
+static void rb500_enable_irq(unsigned int irq_nr);
+static void rb500_disable_irq(unsigned int irq_nr);
+
+extern void __init init_generic_irq(void);
+
+typedef struct {
+  u32 mask;       /* mask of valid bits in pending/mask registers */
+  volatile u32 *base_addr;
+} intr_group_t;
+
+#define RC32434_NR_IRQS  (GROUP4_IRQ_BASE + 32)
+
+#if (NR_IRQS < RC32434_NR_IRQS)
+#error Too little irqs defined. Did you override <asm/irq.h> ?
+#endif
+
+static const intr_group_t intr_group[NUM_INTR_GROUPS] = {
+  { 0x0000efff, (u32 *)KSEG1ADDR(IC_GROUP0_PEND + 0 * IC_GROUP_OFFSET) },
+  { 0x00001fff, (u32 *)KSEG1ADDR(IC_GROUP0_PEND + 1 * IC_GROUP_OFFSET) },
+  { 0x00000007, (u32 *)KSEG1ADDR(IC_GROUP0_PEND + 2 * IC_GROUP_OFFSET) },
+  { 0x0003ffff, (u32 *)KSEG1ADDR(IC_GROUP0_PEND + 3 * IC_GROUP_OFFSET) },
+  { 0xffffffff, (u32 *)KSEG1ADDR(IC_GROUP0_PEND + 4 * IC_GROUP_OFFSET) }
+};
+
+#define READ_PEND(base) (*(base))
+#define READ_MASK(base) (*(base + 2))
+#define WRITE_MASK(base, val) (*(base + 2) = (val))
+
+static inline int irq_to_group(unsigned int irq_nr)
+{
+  return ((irq_nr - GROUP0_IRQ_BASE) >> 5);
+}
+
+static inline int group_to_ip(unsigned int group)
+{
+  return group + 2;
+}
+
+static inline void enable_local_irq(unsigned int ip)
+{
+  int ipnum = 0x100 << ip;
+  clear_c0_cause(ipnum);
+  set_c0_status(ipnum);
+}
+
+static inline void disable_local_irq(unsigned int ip)
+{
+  int ipnum = 0x100 << ip;
+  clear_c0_status(ipnum);
+}
+
+static inline void ack_local_irq(unsigned int ip)
+{
+  int ipnum = 0x100 << ip;
+  clear_c0_cause(ipnum);
+}
+
+static void rb500_enable_irq(unsigned int irq_nr)
+{
+  int           ip = irq_nr - GROUP0_IRQ_BASE;
+  unsigned int  group, intr_bit;
+  volatile unsigned int  *addr;
+  
+  
+  if (ip < 0)
+    enable_local_irq(irq_nr);
+  else {
+    group = ip >> 5;
+ 
+    ip &= (1<<5)-1;
+    intr_bit = 1 << ip;
+ 
+    enable_local_irq(group_to_ip(group));
+    
+    addr = intr_group[group].base_addr;
+    WRITE_MASK(addr, READ_MASK(addr) & ~intr_bit);
+  }
+}
+
+static void rb500_disable_irq(unsigned int irq_nr)
+{
+  int           ip = irq_nr - GROUP0_IRQ_BASE;
+  unsigned int  group, intr_bit, mask;
+  volatile unsigned int  *addr;
+  
+  if (ip < 0) {
+	disable_local_irq(irq_nr);
+    }else{
+    group = ip >> 5;
+    
+    ip &= (1<<5) -1;
+    intr_bit = 1 << ip;
+    addr = intr_group[group].base_addr;
+    mask = READ_MASK(addr);
+    mask |= intr_bit;
+    WRITE_MASK(addr,mask);
+   
+    /*
+     * if there are no more interrupts enabled in this
+     * group, disable corresponding IP
+     */
+    if (mask == intr_group[group].mask)
+      disable_local_irq(group_to_ip(group));
+  }
+}
+
+static unsigned int startup_irq(unsigned int irq_nr)
+{
+  rb500_enable_irq(irq_nr);
+  return 0; 
+}
+
+static void shutdown_irq(unsigned int irq_nr)
+{
+  rb500_disable_irq(irq_nr);
+  return;
+}
+
+static void mask_and_ack_irq(unsigned int irq_nr)
+{
+  rb500_disable_irq(irq_nr);
+  ack_local_irq(group_to_ip(irq_to_group(irq_nr)));
+}
+
+static void rb500_end_irq(unsigned int irq_nr)
+{
+
+  int ip = irq_nr - GROUP0_IRQ_BASE;
+  unsigned int intr_bit, group;
+  volatile unsigned int *addr;
+
+	if ((irq_desc[irq_nr].status & (IRQ_DISABLED | IRQ_INPROGRESS))) {
+		printk("warning: end_irq %d did not enable (%x)\n", 
+			irq_nr, irq_desc[irq_nr].status);
+		return;
+	}
+	
+	if (ip < 0) {
+		enable_local_irq(irq_nr);
+	} else {
+		group = ip >> 5;
+	
+		ip &= (1 << 5) - 1;
+		intr_bit = 1 << ip;
+	
+		if (irq_nr >= GROUP4_IRQ_BASE && irq_nr <= (GROUP4_IRQ_BASE + 13)) {
+			gpio->gpioistat = gpio->gpioistat & ~intr_bit;
+		}
+	
+		enable_local_irq(group_to_ip(group));
+	
+		addr = intr_group[group].base_addr;
+		WRITE_MASK(addr, READ_MASK(addr) & ~intr_bit);
+	}
+}
+
+static struct hw_interrupt_type rc32434_irq_type = {
+  .typename = "RB500",
+  .startup = startup_irq,
+  .shutdown = shutdown_irq,
+  .enable = rb500_enable_irq,
+  .disable = rb500_disable_irq,
+  .ack = mask_and_ack_irq,
+  .end = rb500_end_irq,
+};
+
+
+void __init arch_init_irq(void)
+{
+	int i;
+
+	printk("Initializing IRQ's: %d out of %d\n", RC32434_NR_IRQS, NR_IRQS);
+	memset(irq_desc, 0, sizeof(irq_desc));
+  
+	for (i = 0; i < RC32434_NR_IRQS; i++) {
+		irq_desc[i].status = IRQ_DISABLED;
+		irq_desc[i].action = NULL;
+		irq_desc[i].depth = 1;
+		irq_desc[i].chip = &rc32434_irq_type;
+		spin_lock_init(&irq_desc[i].lock);
+	}
+}
+
+/* Main Interrupt dispatcher */
+asmlinkage void plat_irq_dispatch(void)
+{
+	unsigned int ip, pend, group;
+	volatile unsigned int *addr;
+	unsigned int cp0_cause = read_c0_cause() & read_c0_status();
+
+	if (cp0_cause & CAUSEF_IP7) {
+		ll_timer_interrupt(7);
+	} else if ((ip = (cp0_cause & 0x7c00))) {
+		group = 21 - rc32434_clz(ip);
+
+		addr = intr_group[group].base_addr;
+
+		pend = READ_PEND(addr);
+		pend &= ~READ_MASK(addr); // only unmasked interrupts
+		pend = 39 - rc32434_clz(pend);
+		do_IRQ((group << 5) + pend);
+	}
+}