diff options
Diffstat (limited to 'openwrt/target/linux/aruba-2.6/patches/002-irq.patch')
-rw-r--r-- | openwrt/target/linux/aruba-2.6/patches/002-irq.patch | 524 |
1 files changed, 0 insertions, 524 deletions
diff --git a/openwrt/target/linux/aruba-2.6/patches/002-irq.patch b/openwrt/target/linux/aruba-2.6/patches/002-irq.patch deleted file mode 100644 index 8faffaf9bb..0000000000 --- a/openwrt/target/linux/aruba-2.6/patches/002-irq.patch +++ /dev/null @@ -1,524 +0,0 @@ -diff -Nur linux-2.6.15/arch/mips/aruba/idtIRQ.S linux-2.6.15-openwrt/arch/mips/aruba/idtIRQ.S ---- linux-2.6.15/arch/mips/aruba/idtIRQ.S 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.15-openwrt/arch/mips/aruba/idtIRQ.S 2006-01-10 00:32:32.000000000 +0100 -@@ -0,0 +1,87 @@ -+/************************************************************************** -+ * -+ * BRIEF MODULE DESCRIPTION -+ * Intterrupt dispatcher code for IDT boards -+ * -+ * Copyright 2004 IDT Inc. (rischelp@idt.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. -+ * -+ * -+ ************************************************************************** -+ * May 2004 rkt, neb -+ * -+ * Initial Release -+ * -+ * -+ * -+ ************************************************************************** -+ */ -+ -+ -+#include <asm/asm.h> -+#include <asm/mipsregs.h> -+#include <asm/regdef.h> -+#include <asm/stackframe.h> -+ -+ .text -+ .set noreorder -+ .set noat -+ .align 5 -+ NESTED(idtIRQ, PT_SIZE, sp) -+ .set noat -+ SAVE_ALL -+ CLI -+ -+ .set at -+ .set noreorder -+ -+ /* Get the pending interrupts */ -+ mfc0 t0, CP0_CAUSE -+ nop -+ -+ /* Isolate the allowed ones by anding the irq mask */ -+ mfc0 t2, CP0_STATUS -+ move a1, sp /* need a nop here, hence we anticipate */ -+ andi t0, CAUSEF_IP -+ and t0, t2 -+ -+ /* check for r4k counter/timer IRQ. */ -+ -+ andi t1, t0, CAUSEF_IP7 -+ beqz t1, 1f -+ nop -+ -+ jal aruba_timer_interrupt -+ -+ li a0, 7 -+ -+ j ret_from_irq -+ nop -+1: -+ jal aruba_irqdispatch -+ move a0, t0 -+ j ret_from_irq -+ nop -+ -+ END(idtIRQ) -+ -+ -diff -Nur linux-2.6.15/arch/mips/aruba/irq.c linux-2.6.15-openwrt/arch/mips/aruba/irq.c ---- linux-2.6.15/arch/mips/aruba/irq.c 1970-01-01 01:00:00.000000000 +0100 -+++ linux-2.6.15-openwrt/arch/mips/aruba/irq.c 2006-01-10 00:32:32.000000000 +0100 -@@ -0,0 +1,429 @@ -+/************************************************************************** -+ * -+ * BRIEF MODULE DESCRIPTION -+ * Interrupt routines for IDT EB434 boards / Atheros boards -+ * Modified by Aruba Networks -+ * -+ * Copyright 2004 IDT Inc. (rischelp@idt.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. -+ * -+ * -+ ************************************************************************** -+ * May 2004 rkt, neb -+ * -+ * Initial Release -+ * -+ * -+ * -+ ************************************************************************** -+ */ -+ -+#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/mipsregs.h> -+#include <asm/system.h> -+#include <asm/idt-boards/rc32434/rc32434.h> -+#include <asm/idt-boards/rc32434/rc32434_gpio.h> -+ -+#include <asm/irq.h> -+ -+#undef DEBUG_IRQ -+#ifdef DEBUG_IRQ -+/* note: prints function name for you */ -+#define DPRINTK(fmt, args...) printk("%s: " fmt, __FUNCTION__ , ## args) -+#else -+#define DPRINTK(fmt, args...) -+#endif -+ -+extern asmlinkage void idtIRQ(void); -+static unsigned int startup_irq(unsigned int irq); -+static void end_irq(unsigned int irq_nr); -+static void mask_and_ack_irq(unsigned int irq_nr); -+static void aruba_enable_irq(unsigned int irq_nr); -+static void aruba_disable_irq(unsigned int irq_nr); -+ -+extern void __init init_generic_irq(void); -+ -+typedef struct { -+ u32 mask; -+ volatile u32 *base_addr; -+} intr_group_t; -+ -+static const intr_group_t intr_group_merlot[NUM_INTR_GROUPS] = { -+ {0xffffffff, (u32 *) KSEG1ADDR(IC_GROUP0_PEND + 0)}, -+}; -+ -+#define READ_PEND_MERLOT(base) (*((volatile unsigned long *)(0xbc003010))) -+#define READ_MASK_MERLOT(base) (*((volatile unsigned long *)(0xbc003014))) -+#define WRITE_MASK_MERLOT(base, val) ((*((volatile unsigned long *)(0xbc003014))) = (val), READ_MASK_MERLOT()) -+ -+static const intr_group_t intr_group_muscat[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_MUSCAT(base) (*(base)) -+#define READ_MASK_MUSCAT(base) (*(base + 2)) -+#define WRITE_MASK_MUSCAT(base, val) (*(base + 2) = (val)) -+ -+static inline int irq_to_group(unsigned int irq_nr) -+{ -+ switch (mips_machtype) { -+ case MACH_ARUBA_AP70: -+ return ((irq_nr - GROUP0_IRQ_BASE) >> 5); -+ case MACH_ARUBA_AP65: -+ case MACH_ARUBA_AP60: -+ default: -+ return 0; -+ } -+} -+ -+static inline int group_to_ip(unsigned int group) -+{ -+ switch (mips_machtype) { -+ case MACH_ARUBA_AP70: -+ return group + 2; -+ case MACH_ARUBA_AP65: -+ case MACH_ARUBA_AP60: -+ default: -+ return 6; -+ } -+} -+ -+static inline void enable_local_irq(unsigned int ip) -+{ -+ set_c0_status(0x100 << ip); -+ irq_enable_hazard(); -+} -+ -+static inline void disable_local_irq(unsigned int ip) -+{ -+ clear_c0_status(0x100 << ip); -+ irq_disable_hazard(); -+} -+ -+static void aruba_enable_irq(unsigned int irq_nr) -+{ -+ unsigned long flags; -+ int ip = irq_nr - GROUP0_IRQ_BASE; -+ unsigned int group, intr_bit; -+ volatile unsigned int *addr; -+ -+ -+ local_irq_save(flags); -+ -+ if (ip < 0) { -+ enable_local_irq(irq_nr); -+ } else { -+ // calculate group -+ switch (mips_machtype) { -+ case MACH_ARUBA_AP70: -+ group = ip >> 5; -+ break; -+ case MACH_ARUBA_AP65: -+ case MACH_ARUBA_AP60: -+ default: -+ group = 0; -+ break; -+ } -+ -+ // calc interrupt bit within group -+ ip -= (group << 5); -+ intr_bit = 1 << ip; -+ -+ switch (mips_machtype) { -+ case MACH_ARUBA_AP70: -+ addr = intr_group_muscat[group].base_addr; -+ WRITE_MASK_MUSCAT(addr, READ_MASK_MUSCAT(addr) & ~intr_bit); -+ break; -+ case MACH_ARUBA_AP65: -+ case MACH_ARUBA_AP60: -+ default: -+ addr = intr_group_merlot[group].base_addr; -+ WRITE_MASK_MERLOT(addr, READ_MASK_MERLOT(addr) | intr_bit); -+ break; -+ } -+ enable_local_irq(group_to_ip(group)); -+ } -+ -+ back_to_back_c0_hazard(); -+ local_irq_restore(flags); -+ -+} -+ -+static void aruba_disable_irq(unsigned int irq_nr) -+{ -+ unsigned long flags; -+ int ip = irq_nr - GROUP0_IRQ_BASE; -+ unsigned int group, intr_bit, mask; -+ volatile unsigned int *addr; -+ -+ local_irq_save(flags); -+ -+ if (ip < 0) { -+ disable_local_irq(irq_nr); -+ } else { -+ // calculate group -+ switch (mips_machtype) { -+ case MACH_ARUBA_AP70: -+ group = ip >> 5; -+ break; -+ case MACH_ARUBA_AP65: -+ case MACH_ARUBA_AP60: -+ default: -+ group = 0; -+ break; -+ } -+ -+ // calc interrupt bit within group -+ ip -= group << 5; -+ intr_bit = 1 << ip; -+ -+ switch (mips_machtype) { -+ case MACH_ARUBA_AP70: -+ addr = intr_group_muscat[group].base_addr; -+ // mask intr within group -+ mask = READ_MASK_MUSCAT(addr); -+ mask |= intr_bit; -+ WRITE_MASK_MUSCAT(addr, mask); -+ -+ /* -+ if there are no more interrupts enabled in this -+ group, disable corresponding IP -+ */ -+ if (mask == intr_group_muscat[group].mask) -+ disable_local_irq(group_to_ip(group)); -+ break; -+ case MACH_ARUBA_AP65: -+ case MACH_ARUBA_AP60: -+ default: -+ addr = intr_group_merlot[group].base_addr; -+ // mask intr within group -+ mask = READ_MASK_MERLOT(addr); -+ mask &= ~intr_bit; -+ if (!mask) -+ disable_local_irq(group_to_ip(group)); -+ WRITE_MASK_MERLOT(addr, mask); -+ break; -+ } -+ } -+ -+ back_to_back_c0_hazard(); -+ local_irq_restore(flags); -+} -+ -+static unsigned int startup_irq(unsigned int irq_nr) -+{ -+ aruba_enable_irq(irq_nr); -+ return 0; -+} -+ -+static void shutdown_irq(unsigned int irq_nr) -+{ -+ aruba_disable_irq(irq_nr); -+} -+ -+static void mask_and_ack_irq(unsigned int irq_nr) -+{ -+ aruba_disable_irq(irq_nr); -+} -+ -+static void 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); -+ /* fall through; enable the interrupt -+ * -- It'll get stuck otherwise -+ */ -+ -+ } -+ -+ if (ip<0) { -+ enable_local_irq(irq_nr); -+ } else { -+ -+ switch (mips_machtype) { -+ case MACH_ARUBA_AP70: -+ if (irq_nr == GROUP4_IRQ_BASE + 9) idt_gpio->gpioistat &= 0xfffffdff; -+ else if (irq_nr == GROUP4_IRQ_BASE + 10) idt_gpio->gpioistat &= 0xfffffbff; -+ else if (irq_nr == GROUP4_IRQ_BASE + 11) idt_gpio->gpioistat &= 0xfffff7ff; -+ else if (irq_nr == GROUP4_IRQ_BASE + 12) idt_gpio->gpioistat &= 0xffffefff; -+ -+ group = ip >> 5; -+ -+ // calc interrupt bit within group -+ ip -= (group << 5); -+ intr_bit = 1 << ip; -+ -+ // first enable the IP mapped to this IRQ -+ enable_local_irq(group_to_ip(group)); -+ -+ addr = intr_group_muscat[group].base_addr; -+ // unmask intr within group -+ WRITE_MASK_MUSCAT(addr, READ_MASK_MUSCAT(addr) & ~intr_bit); -+ break; -+ -+ case MACH_ARUBA_AP65: -+ case MACH_ARUBA_AP60: -+ default: -+ group = 0; -+ -+ // calc interrupt bit within group -+ intr_bit = 1 << ip; -+ -+ // first enable the IP mapped to this IRQ -+ enable_local_irq(group_to_ip(group)); -+ -+ addr = intr_group_merlot[group].base_addr; -+ // unmask intr within group -+ WRITE_MASK_MERLOT(addr, READ_MASK_MERLOT(addr) | intr_bit); -+ break; -+ } -+ } -+} -+ -+static struct hw_interrupt_type aruba_irq_type = { -+ .typename = "ARUBA", -+ .startup = startup_irq, -+ .shutdown = shutdown_irq, -+ .enable = aruba_enable_irq, -+ .disable = aruba_disable_irq, -+ .ack = mask_and_ack_irq, -+ .end = 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)); -+ set_except_vector(0, idtIRQ); -+ -+ set_c0_status(0xFF00); -+ -+ 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].handler = &aruba_irq_type; -+ spin_lock_init(&irq_desc[i].lock); -+ } -+} -+ -+/* Main Interrupt dispatcher */ -+void aruba_irqdispatch(unsigned long cp0_cause, struct pt_regs *regs) -+{ -+ unsigned int pend, group, ip; -+ volatile unsigned int *addr; -+ -+ if(cp0_cause == 0) { -+ printk("INTERRUPT(S) FIRED WHILE MASKED\n"); -+#ifdef ARUBA_DEBUG -+ // debuging use -- figure out which interrupt(s) fired -+ cp0_cause = read_c0_cause() & CAUSEF_IP; -+ while (cp0_cause) { -+ unsigned long intr_bit; -+ unsigned int irq_nr; -+ intr_bit = (31 - rc32434_clz(cp0_cause)); -+ irq_nr = intr_bit - GROUP0_IRQ_BASE; -+ printk(" ---> MASKED IRQ %d\n",irq_nr); -+ cp0_cause &= ~(1 << intr_bit); -+ } -+#endif -+ return; -+ } -+ -+ switch (mips_machtype) { -+ case MACH_ARUBA_AP70: -+ if ((ip = (cp0_cause & 0x7c00))) { -+ group = 21 - rc32434_clz(ip); -+ -+ addr = intr_group_muscat[group].base_addr; -+ -+ pend = READ_PEND_MUSCAT(addr); -+ pend &= ~READ_MASK_MUSCAT(addr); // only unmasked interrupts -+ pend = 39 - rc32434_clz(pend); -+ do_IRQ((group << 5) + pend, regs); -+ } -+ break; -+ case MACH_ARUBA_AP65: -+ case MACH_ARUBA_AP60: -+ default: -+ if (cp0_cause & 0x4000) { // 1 << (8 +6) == irq 6 -+ // Misc Interrupt -+ group = 0; -+ addr = intr_group_merlot[group].base_addr; -+ pend = READ_PEND_MERLOT(addr); -+ pend &= READ_MASK_MERLOT(addr); // only unmasked interrupts -+ /* handle one misc interrupt at a time */ -+ while (pend) -+ { -+ unsigned long intr_bit; -+ unsigned int irq_nr; -+ -+ intr_bit = (31 - rc32434_clz(pend)); -+ irq_nr = intr_bit + GROUP0_IRQ_BASE; -+ -+ do_IRQ(irq_nr, regs); -+ pend &= ~(1 << intr_bit); -+ } -+ } else if (cp0_cause & 0x3c00) { // irq 2-5 -+ while (cp0_cause) -+ { -+ unsigned long intr_bit; -+ unsigned int irq_nr; -+ -+ intr_bit = (31 - rc32434_clz(cp0_cause)); -+ irq_nr = intr_bit - GROUP0_IRQ_BASE; -+ -+ do_IRQ(irq_nr, regs); -+ cp0_cause &= ~(1 << intr_bit); -+ } -+ } -+ break; -+ } -+} |