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refactor atheros system code - also add support for the reset button (sends netlink messages in the same format as broadcom-diag)
SVN-Revision: 7869
This commit is contained in:
Felix Fietkau
parent
ce4fbcf3f4
commit
e062f4185e
@ -3,20 +3,11 @@
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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# Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved.
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# Copyright (C) 2006 FON Technology, SL.
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# Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
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# Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
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#
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# Makefile for Atheros ar531x boards
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#
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# Note! Dependencies are done automagically by 'make dep', which also
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# removes any old dependencies. DON'T put your own dependencies here
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# unless it's something special (ie not a .c file).
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#
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obj-y += board.o prom.o irq.o
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obj-$(CONFIG_ATHEROS_AR5312) += ar5312.o
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obj-$(CONFIG_ATHEROS_AR5315) += ar5315.o
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obj-y += board.o prom.o reset.o
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obj-$(CONFIG_ATHEROS_AR5312) += ar5312/
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obj-$(CONFIG_ATHEROS_AR5315) += ar5315/
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@ -0,0 +1,11 @@
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#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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# Copyright (C) 2007 FON Technology, SL.
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# Copyright (C) 2007 Imre Kaloz <kaloz@openwrt.org>
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# Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org>
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#
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obj-y := board.o irq.o
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@ -27,7 +27,7 @@
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#include <asm/time.h>
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#include <asm/irq.h>
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#include <asm/io.h>
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#include "ar531x.h"
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#include "../ar531x.h"
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#define NO_PHY 0x1f
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@ -312,47 +312,6 @@ int __init ar5312_init_devices(void)
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}
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/*
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* Called when an interrupt is received, this function
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* determines exactly which interrupt it was, and it
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* invokes the appropriate handler.
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*
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* Implicitly, we also define interrupt priority by
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* choosing which to dispatch first.
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*/
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asmlinkage void ar5312_irq_dispatch(void)
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{
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int pending = read_c0_status() & read_c0_cause();
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if (pending & CAUSEF_IP2)
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do_IRQ(AR5312_IRQ_WLAN0_INTRS);
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else if (pending & CAUSEF_IP3)
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do_IRQ(AR5312_IRQ_ENET0_INTRS);
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else if (pending & CAUSEF_IP4)
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do_IRQ(AR5312_IRQ_ENET1_INTRS);
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else if (pending & CAUSEF_IP5)
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do_IRQ(AR5312_IRQ_WLAN1_INTRS);
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else if (pending & CAUSEF_IP6) {
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unsigned int ar531x_misc_intrs = sysRegRead(AR531X_ISR) & sysRegRead(AR531X_IMR);
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if (ar531x_misc_intrs & AR531X_ISR_TIMER) {
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do_IRQ(AR531X_MISC_IRQ_TIMER);
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(void)sysRegRead(AR531X_TIMER);
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} else if (ar531x_misc_intrs & AR531X_ISR_AHBPROC)
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do_IRQ(AR531X_MISC_IRQ_AHB_PROC);
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else if ((ar531x_misc_intrs & AR531X_ISR_UART0))
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do_IRQ(AR531X_MISC_IRQ_UART0);
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else if (ar531x_misc_intrs & AR531X_ISR_WD)
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do_IRQ(AR531X_MISC_IRQ_WATCHDOG);
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else
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do_IRQ(AR531X_MISC_IRQ_NONE);
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} else if (pending & CAUSEF_IP7) {
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do_IRQ(AR531X_IRQ_CPU_CLOCK);
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}
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else
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do_IRQ(AR531X_IRQ_NONE);
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}
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static void ar5312_halt(void)
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{
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while (1);
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@ -451,110 +410,6 @@ static void __init ar5312_time_init(void)
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}
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/* Enable the specified AR531X_MISC_IRQ interrupt */
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static void
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ar5312_misc_intr_enable(unsigned int irq)
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{
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unsigned int imr;
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imr = sysRegRead(AR531X_IMR);
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imr |= (1 << (irq - AR531X_MISC_IRQ_BASE - 1));
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sysRegWrite(AR531X_IMR, imr);
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sysRegRead(AR531X_IMR); /* flush write buffer */
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}
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/* Disable the specified AR531X_MISC_IRQ interrupt */
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static void
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ar5312_misc_intr_disable(unsigned int irq)
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{
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unsigned int imr;
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imr = sysRegRead(AR531X_IMR);
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imr &= ~(1 << (irq - AR531X_MISC_IRQ_BASE - 1));
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sysRegWrite(AR531X_IMR, imr);
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sysRegRead(AR531X_IMR); /* flush write buffer */
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}
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/* Turn on the specified AR531X_MISC_IRQ interrupt */
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static unsigned int
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ar5312_misc_intr_startup(unsigned int irq)
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{
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ar5312_misc_intr_enable(irq);
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return 0;
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}
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/* Turn off the specified AR531X_MISC_IRQ interrupt */
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static void
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ar5312_misc_intr_shutdown(unsigned int irq)
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{
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ar5312_misc_intr_disable(irq);
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}
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static void
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ar5312_misc_intr_ack(unsigned int irq)
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{
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ar5312_misc_intr_disable(irq);
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}
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static void
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ar5312_misc_intr_end(unsigned int irq)
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{
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if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
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ar5312_misc_intr_enable(irq);
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}
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static struct irq_chip ar5312_misc_intr_controller = {
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.typename = "AR5312 misc",
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.startup = ar5312_misc_intr_startup,
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.shutdown = ar5312_misc_intr_shutdown,
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.enable = ar5312_misc_intr_enable,
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.disable = ar5312_misc_intr_disable,
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.ack = ar5312_misc_intr_ack,
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.end = ar5312_misc_intr_end,
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};
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static irqreturn_t ar5312_ahb_proc_handler(int cpl, void *dev_id)
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{
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u32 proc1 = sysRegRead(AR531X_PROC1);
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u32 procAddr = sysRegRead(AR531X_PROCADDR); /* clears error state */
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u32 dma1 = sysRegRead(AR531X_DMA1);
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u32 dmaAddr = sysRegRead(AR531X_DMAADDR); /* clears error state */
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printk("AHB interrupt: PROCADDR=0x%8.8x PROC1=0x%8.8x DMAADDR=0x%8.8x DMA1=0x%8.8x\n",
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procAddr, proc1, dmaAddr, dma1);
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machine_restart("AHB error"); /* Catastrophic failure */
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return IRQ_HANDLED;
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}
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static struct irqaction ar5312_ahb_proc_interrupt = {
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.handler = ar5312_ahb_proc_handler,
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.flags = SA_INTERRUPT,
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.name = "ar5312_ahb_proc_interrupt",
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};
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static struct irqaction cascade = {
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.handler = no_action,
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.flags = SA_INTERRUPT,
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.name = "cascade",
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};
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void __init ar5312_misc_intr_init(int irq_base)
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{
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int i;
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for (i = irq_base; i < irq_base + AR531X_MISC_IRQ_COUNT; i++) {
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irq_desc[i].status = IRQ_DISABLED;
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irq_desc[i].action = NULL;
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irq_desc[i].depth = 1;
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irq_desc[i].chip = &ar5312_misc_intr_controller;
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}
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setup_irq(AR531X_MISC_IRQ_AHB_PROC, &ar5312_ahb_proc_interrupt);
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setup_irq(AR5312_IRQ_MISC_INTRS, &cascade);
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}
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void __init ar5312_prom_init(void)
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{
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u32 memsize, memcfg, bank0AC, bank1AC;
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174
target/linux/atheros-2.6/files/arch/mips/atheros/ar5312/irq.c
Normal file
174
target/linux/atheros-2.6/files/arch/mips/atheros/ar5312/irq.c
Normal file
@ -0,0 +1,174 @@
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved.
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* Copyright (C) 2006 FON Technology, SL.
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* Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
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* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
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*/
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/*
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* Platform devices for Atheros SoCs
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/string.h>
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#include <linux/kernel.h>
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#include <linux/reboot.h>
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#include <asm/bootinfo.h>
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#include <asm/time.h>
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#include <asm/irq.h>
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#include <asm/io.h>
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#include "../ar531x.h"
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/*
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* Called when an interrupt is received, this function
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* determines exactly which interrupt it was, and it
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* invokes the appropriate handler.
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*
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* Implicitly, we also define interrupt priority by
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* choosing which to dispatch first.
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*/
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asmlinkage void ar5312_irq_dispatch(void)
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{
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int pending = read_c0_status() & read_c0_cause();
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if (pending & CAUSEF_IP2)
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do_IRQ(AR5312_IRQ_WLAN0_INTRS);
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else if (pending & CAUSEF_IP3)
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do_IRQ(AR5312_IRQ_ENET0_INTRS);
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else if (pending & CAUSEF_IP4)
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do_IRQ(AR5312_IRQ_ENET1_INTRS);
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else if (pending & CAUSEF_IP5)
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do_IRQ(AR5312_IRQ_WLAN1_INTRS);
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else if (pending & CAUSEF_IP6) {
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unsigned int ar531x_misc_intrs = sysRegRead(AR531X_ISR) & sysRegRead(AR531X_IMR);
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if (ar531x_misc_intrs & AR531X_ISR_TIMER) {
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do_IRQ(AR531X_MISC_IRQ_TIMER);
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(void)sysRegRead(AR531X_TIMER);
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} else if (ar531x_misc_intrs & AR531X_ISR_AHBPROC)
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do_IRQ(AR531X_MISC_IRQ_AHB_PROC);
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else if ((ar531x_misc_intrs & AR531X_ISR_UART0))
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do_IRQ(AR531X_MISC_IRQ_UART0);
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else if (ar531x_misc_intrs & AR531X_ISR_WD)
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do_IRQ(AR531X_MISC_IRQ_WATCHDOG);
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else
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do_IRQ(AR531X_MISC_IRQ_NONE);
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} else if (pending & CAUSEF_IP7) {
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do_IRQ(AR531X_IRQ_CPU_CLOCK);
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}
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else
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do_IRQ(AR531X_IRQ_NONE);
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}
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/* Enable the specified AR531X_MISC_IRQ interrupt */
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static void
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ar5312_misc_intr_enable(unsigned int irq)
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{
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unsigned int imr;
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imr = sysRegRead(AR531X_IMR);
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imr |= (1 << (irq - AR531X_MISC_IRQ_BASE - 1));
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sysRegWrite(AR531X_IMR, imr);
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sysRegRead(AR531X_IMR); /* flush write buffer */
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}
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/* Disable the specified AR531X_MISC_IRQ interrupt */
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static void
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ar5312_misc_intr_disable(unsigned int irq)
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{
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unsigned int imr;
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imr = sysRegRead(AR531X_IMR);
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imr &= ~(1 << (irq - AR531X_MISC_IRQ_BASE - 1));
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sysRegWrite(AR531X_IMR, imr);
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sysRegRead(AR531X_IMR); /* flush write buffer */
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}
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/* Turn on the specified AR531X_MISC_IRQ interrupt */
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static unsigned int
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ar5312_misc_intr_startup(unsigned int irq)
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{
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ar5312_misc_intr_enable(irq);
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return 0;
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}
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/* Turn off the specified AR531X_MISC_IRQ interrupt */
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static void
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ar5312_misc_intr_shutdown(unsigned int irq)
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{
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ar5312_misc_intr_disable(irq);
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}
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static void
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ar5312_misc_intr_ack(unsigned int irq)
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{
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ar5312_misc_intr_disable(irq);
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}
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static void
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ar5312_misc_intr_end(unsigned int irq)
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{
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if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
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ar5312_misc_intr_enable(irq);
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}
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static struct irq_chip ar5312_misc_intr_controller = {
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.typename = "AR5312 misc",
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.startup = ar5312_misc_intr_startup,
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.shutdown = ar5312_misc_intr_shutdown,
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.enable = ar5312_misc_intr_enable,
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.disable = ar5312_misc_intr_disable,
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.ack = ar5312_misc_intr_ack,
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.end = ar5312_misc_intr_end,
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};
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static irqreturn_t ar5312_ahb_proc_handler(int cpl, void *dev_id)
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{
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u32 proc1 = sysRegRead(AR531X_PROC1);
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u32 procAddr = sysRegRead(AR531X_PROCADDR); /* clears error state */
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u32 dma1 = sysRegRead(AR531X_DMA1);
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u32 dmaAddr = sysRegRead(AR531X_DMAADDR); /* clears error state */
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printk("AHB interrupt: PROCADDR=0x%8.8x PROC1=0x%8.8x DMAADDR=0x%8.8x DMA1=0x%8.8x\n",
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procAddr, proc1, dmaAddr, dma1);
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machine_restart("AHB error"); /* Catastrophic failure */
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return IRQ_HANDLED;
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}
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static struct irqaction ar5312_ahb_proc_interrupt = {
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.handler = ar5312_ahb_proc_handler,
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.flags = SA_INTERRUPT,
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.name = "ar5312_ahb_proc_interrupt",
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};
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static struct irqaction cascade = {
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.handler = no_action,
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.flags = SA_INTERRUPT,
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.name = "cascade",
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};
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void __init ar5312_misc_intr_init(int irq_base)
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{
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int i;
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for (i = irq_base; i < irq_base + AR531X_MISC_IRQ_COUNT; i++) {
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irq_desc[i].status = IRQ_DISABLED;
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irq_desc[i].action = NULL;
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irq_desc[i].depth = 1;
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irq_desc[i].chip = &ar5312_misc_intr_controller;
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}
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setup_irq(AR531X_MISC_IRQ_AHB_PROC, &ar5312_ahb_proc_interrupt);
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setup_irq(AR5312_IRQ_MISC_INTRS, &cascade);
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}
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@ -0,0 +1,11 @@
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#
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# This file is subject to the terms and conditions of the GNU General Public
|
||||
# License. See the file "COPYING" in the main directory of this archive
|
||||
# for more details.
|
||||
#
|
||||
# Copyright (C) 2007 FON Technology, SL.
|
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# Copyright (C) 2007 Imre Kaloz <kaloz@openwrt.org>
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# Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org>
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#
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obj-y := board.o irq.o
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@ -342,12 +342,12 @@
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#define AR5315_GPIO_CR_M(x) (1 << (x)) /* mask for i/o */
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#define AR5315_GPIO_CR_O(x) (1 << (x)) /* output */
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#define AR5315_GPIO_CR_I(x) (0 << (x)) /* input */
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#define AR5315_GPIO_CR_I(x) (0) /* input */
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#define AR5315_GPIO_INT_S(x,Y) ((x) << (8 * (Y))) /* interrupt enable */
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#define AR5315_GPIO_INT_M(Y) ((0x3F) << (8 * (Y))) /* mask for int */
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#define AR5315_GPIO_INT_LVL(x,Y) ((x) << (8 * (Y) + 6)) /* interrupt level */
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#define AR5315_GPIO_INT_LVL_M(Y) ((0x3) << (8 * (Y) + 6)) /* mask for int level */
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#define AR5315_GPIO_INT_S(x) (x) /* interrupt enable */
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#define AR5315_GPIO_INT_M (0x3F) /* mask for int */
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#define AR5315_GPIO_INT_LVL(x) ((x) << 6) /* interrupt level */
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#define AR5315_GPIO_INT_LVL_M ((0x3) << 6) /* mask for int level */
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#define AR5315_RESET_GPIO 5
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#define AR5315_NUM_GPIO 22
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@ -26,9 +26,10 @@
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#include <asm/time.h>
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#include <asm/irq.h>
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#include <asm/io.h>
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#include "ar531x.h"
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#include "../ar531x.h"
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static int is_5315 = 0;
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static struct resource ar5315_eth_res[] = {
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{
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.name = "eth0_membase",
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@ -182,7 +183,6 @@ int __init ar5315_init_devices(void)
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{
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struct ar531x_config *config;
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struct ar531x_boarddata *bcfg;
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u32 devid;
|
||||
int dev = 0;
|
||||
|
||||
if (!is_5315)
|
||||
@ -193,8 +193,9 @@ int __init ar5315_init_devices(void)
|
||||
bcfg = (struct ar531x_boarddata *) board_config;
|
||||
|
||||
#if 0
|
||||
{
|
||||
/* Detect the hardware based on the device ID */
|
||||
devid = sysRegRead(AR5315_SREV) & AR5315_REV_MAJ >> AR5315_REV_MAJ_S;
|
||||
u32 devid = sysRegRead(AR5315_SREV) & AR5315_REV_MAJ >> AR5315_REV_MAJ_S;
|
||||
switch(devid) {
|
||||
case 0x9:
|
||||
mips_machtype = MACH_ATHEROS_AR2317;
|
||||
@ -205,6 +206,7 @@ int __init ar5315_init_devices(void)
|
||||
mips_machtype = MACH_ATHEROS_AR2315;
|
||||
break;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
config = (struct ar531x_config *) kzalloc(sizeof(struct ar531x_config), GFP_KERNEL);
|
||||
@ -221,47 +223,10 @@ int __init ar5315_init_devices(void)
|
||||
ar5315_devs[dev++] = &ar5315_wmac;
|
||||
ar5315_devs[dev++] = &ar5315_spiflash;
|
||||
|
||||
|
||||
return platform_add_devices(ar5315_devs, dev);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Called when an interrupt is received, this function
|
||||
* determines exactly which interrupt it was, and it
|
||||
* invokes the appropriate handler.
|
||||
*
|
||||
* Implicitly, we also define interrupt priority by
|
||||
* choosing which to dispatch first.
|
||||
*/
|
||||
asmlinkage void ar5315_irq_dispatch(void)
|
||||
{
|
||||
int pending = read_c0_status() & read_c0_cause();
|
||||
|
||||
if (pending & CAUSEF_IP3)
|
||||
do_IRQ(AR5315_IRQ_WLAN0_INTRS);
|
||||
else if (pending & CAUSEF_IP4)
|
||||
do_IRQ(AR5315_IRQ_ENET0_INTRS);
|
||||
else if (pending & CAUSEF_IP2) {
|
||||
unsigned int ar531x_misc_intrs = sysRegRead(AR5315_ISR) & sysRegRead(AR5315_IMR);
|
||||
|
||||
if (ar531x_misc_intrs & AR5315_ISR_TIMER)
|
||||
do_IRQ(AR531X_MISC_IRQ_TIMER);
|
||||
else if (ar531x_misc_intrs & AR5315_ISR_AHB)
|
||||
do_IRQ(AR531X_MISC_IRQ_AHB_PROC);
|
||||
else if (ar531x_misc_intrs & AR5315_ISR_GPIO) {
|
||||
sysRegWrite(AR5315_ISR, sysRegRead(AR5315_IMR) | ~AR5315_ISR_GPIO);
|
||||
} else if (ar531x_misc_intrs & AR5315_ISR_UART0)
|
||||
do_IRQ(AR531X_MISC_IRQ_UART0);
|
||||
else if (ar531x_misc_intrs & AR5315_ISR_WD)
|
||||
do_IRQ(AR531X_MISC_IRQ_WATCHDOG);
|
||||
else
|
||||
do_IRQ(AR531X_MISC_IRQ_NONE);
|
||||
} else if (pending & CAUSEF_IP7)
|
||||
do_IRQ(AR531X_IRQ_CPU_CLOCK);
|
||||
else
|
||||
do_IRQ(AR531X_IRQ_NONE);
|
||||
}
|
||||
|
||||
static void ar5315_halt(void)
|
||||
{
|
||||
while (1);
|
||||
@ -362,169 +327,6 @@ static void __init ar5315_time_init(void)
|
||||
mips_hpt_frequency = ar5315_cpu_frequency() / 2;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* Enable the specified AR531X_MISC_IRQ interrupt */
|
||||
static void
|
||||
ar5315_misc_intr_enable(unsigned int irq)
|
||||
{
|
||||
unsigned int imr;
|
||||
|
||||
imr = sysRegRead(AR5315_IMR);
|
||||
switch(irq)
|
||||
{
|
||||
case AR531X_MISC_IRQ_TIMER:
|
||||
imr |= AR5315_ISR_TIMER;
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_AHB_PROC:
|
||||
imr |= AR5315_ISR_AHB;
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_AHB_DMA:
|
||||
imr |= 0/* ?? */;
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_GPIO:
|
||||
imr |= AR5315_ISR_GPIO;
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_UART0:
|
||||
imr |= AR5315_ISR_UART0;
|
||||
break;
|
||||
|
||||
|
||||
case AR531X_MISC_IRQ_WATCHDOG:
|
||||
imr |= AR5315_ISR_WD;
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_LOCAL:
|
||||
imr |= 0/* ?? */;
|
||||
break;
|
||||
|
||||
}
|
||||
sysRegWrite(AR5315_IMR, imr);
|
||||
imr=sysRegRead(AR5315_IMR); /* flush write buffer */
|
||||
}
|
||||
|
||||
/* Disable the specified AR531X_MISC_IRQ interrupt */
|
||||
static void
|
||||
ar5315_misc_intr_disable(unsigned int irq)
|
||||
{
|
||||
unsigned int imr;
|
||||
|
||||
imr = sysRegRead(AR5315_IMR);
|
||||
switch(irq)
|
||||
{
|
||||
case AR531X_MISC_IRQ_TIMER:
|
||||
imr &= (~AR5315_ISR_TIMER);
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_AHB_PROC:
|
||||
imr &= (~AR5315_ISR_AHB);
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_AHB_DMA:
|
||||
imr &= 0/* ?? */;
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_GPIO:
|
||||
imr &= ~AR5315_ISR_GPIO;
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_UART0:
|
||||
imr &= (~AR5315_ISR_UART0);
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_WATCHDOG:
|
||||
imr &= (~AR5315_ISR_WD);
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_LOCAL:
|
||||
imr &= ~0/* ?? */;
|
||||
break;
|
||||
|
||||
}
|
||||
sysRegWrite(AR5315_IMR, imr);
|
||||
sysRegRead(AR5315_IMR); /* flush write buffer */
|
||||
}
|
||||
|
||||
/* Turn on the specified AR531X_MISC_IRQ interrupt */
|
||||
static unsigned int
|
||||
ar5315_misc_intr_startup(unsigned int irq)
|
||||
{
|
||||
ar5315_misc_intr_enable(irq);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Turn off the specified AR531X_MISC_IRQ interrupt */
|
||||
static void
|
||||
ar5315_misc_intr_shutdown(unsigned int irq)
|
||||
{
|
||||
ar5315_misc_intr_disable(irq);
|
||||
}
|
||||
|
||||
static void
|
||||
ar5315_misc_intr_ack(unsigned int irq)
|
||||
{
|
||||
ar5315_misc_intr_disable(irq);
|
||||
}
|
||||
|
||||
static void
|
||||
ar5315_misc_intr_end(unsigned int irq)
|
||||
{
|
||||
if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
|
||||
ar5315_misc_intr_enable(irq);
|
||||
}
|
||||
|
||||
static struct irq_chip ar5315_misc_intr_controller = {
|
||||
.typename = "AR5315 misc",
|
||||
.startup = ar5315_misc_intr_startup,
|
||||
.shutdown = ar5315_misc_intr_shutdown,
|
||||
.enable = ar5315_misc_intr_enable,
|
||||
.disable = ar5315_misc_intr_disable,
|
||||
.ack = ar5315_misc_intr_ack,
|
||||
.end = ar5315_misc_intr_end,
|
||||
};
|
||||
|
||||
static irqreturn_t ar5315_ahb_proc_handler(int cpl, void *dev_id)
|
||||
{
|
||||
sysRegWrite(AR5315_AHB_ERR0,AHB_ERROR_DET);
|
||||
sysRegRead(AR5315_AHB_ERR1);
|
||||
|
||||
printk("AHB fatal error\n");
|
||||
machine_restart("AHB error"); /* Catastrophic failure */
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static struct irqaction ar5315_ahb_proc_interrupt = {
|
||||
.handler = ar5315_ahb_proc_handler,
|
||||
.flags = SA_INTERRUPT,
|
||||
.name = "ar5315_ahb_proc_interrupt",
|
||||
};
|
||||
|
||||
|
||||
static struct irqaction cascade = {
|
||||
.handler = no_action,
|
||||
.flags = SA_INTERRUPT,
|
||||
.name = "cascade",
|
||||
};
|
||||
|
||||
void ar5315_misc_intr_init(int irq_base)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = irq_base; i < irq_base + AR531X_MISC_IRQ_COUNT; i++) {
|
||||
irq_desc[i].status = IRQ_DISABLED;
|
||||
irq_desc[i].action = NULL;
|
||||
irq_desc[i].depth = 1;
|
||||
irq_desc[i].chip = &ar5315_misc_intr_controller;
|
||||
}
|
||||
setup_irq(AR531X_MISC_IRQ_AHB_PROC, &ar5315_ahb_proc_interrupt);
|
||||
setup_irq(AR5315_IRQ_MISC_INTRS, &cascade);
|
||||
}
|
||||
|
||||
void __init ar5315_prom_init(void)
|
||||
{
|
||||
u32 memsize, memcfg;
|
||||
330
target/linux/atheros-2.6/files/arch/mips/atheros/ar5315/irq.c
Normal file
330
target/linux/atheros-2.6/files/arch/mips/atheros/ar5315/irq.c
Normal file
@ -0,0 +1,330 @@
|
||||
/*
|
||||
* This file is subject to the terms and conditions of the GNU General Public
|
||||
* License. See the file "COPYING" in the main directory of this archive
|
||||
* for more details.
|
||||
*
|
||||
* Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved.
|
||||
* Copyright (C) 2006 FON Technology, SL.
|
||||
* Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
|
||||
* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
|
||||
*/
|
||||
|
||||
/*
|
||||
* Platform devices for Atheros SoCs
|
||||
*/
|
||||
|
||||
#include <linux/init.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/types.h>
|
||||
#include <linux/string.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/reboot.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <asm/bootinfo.h>
|
||||
#include <asm/irq_cpu.h>
|
||||
#include <asm/io.h>
|
||||
#include "../ar531x.h"
|
||||
|
||||
static u32 gpiointmask = 0, gpiointval = 0;
|
||||
|
||||
static inline void ar5315_gpio_irq(void)
|
||||
{
|
||||
u32 pend;
|
||||
sysRegWrite(AR5315_ISR, sysRegRead(AR5315_IMR) | ~AR5315_ISR_GPIO);
|
||||
|
||||
/* only do one gpio interrupt at a time */
|
||||
pend = (sysRegRead(AR5315_GPIO_DI) ^ gpiointval) & gpiointmask;
|
||||
if (!pend)
|
||||
return;
|
||||
|
||||
do_IRQ(AR531X_GPIO_IRQ_BASE + 31 - clz(pend));
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Called when an interrupt is received, this function
|
||||
* determines exactly which interrupt it was, and it
|
||||
* invokes the appropriate handler.
|
||||
*
|
||||
* Implicitly, we also define interrupt priority by
|
||||
* choosing which to dispatch first.
|
||||
*/
|
||||
asmlinkage void ar5315_irq_dispatch(void)
|
||||
{
|
||||
int pending = read_c0_status() & read_c0_cause();
|
||||
|
||||
if (pending & CAUSEF_IP3)
|
||||
do_IRQ(AR5315_IRQ_WLAN0_INTRS);
|
||||
else if (pending & CAUSEF_IP4)
|
||||
do_IRQ(AR5315_IRQ_ENET0_INTRS);
|
||||
else if (pending & CAUSEF_IP2) {
|
||||
unsigned int ar531x_misc_intrs = sysRegRead(AR5315_ISR) & sysRegRead(AR5315_IMR);
|
||||
|
||||
if (ar531x_misc_intrs & AR5315_ISR_SPI)
|
||||
do_IRQ(AR531X_MISC_IRQ_SPI);
|
||||
else if (ar531x_misc_intrs & AR5315_ISR_TIMER)
|
||||
do_IRQ(AR531X_MISC_IRQ_TIMER);
|
||||
else if (ar531x_misc_intrs & AR5315_ISR_AHB)
|
||||
do_IRQ(AR531X_MISC_IRQ_AHB_PROC);
|
||||
else if (ar531x_misc_intrs & AR5315_ISR_GPIO)
|
||||
ar5315_gpio_irq();
|
||||
else if (ar531x_misc_intrs & AR5315_ISR_UART0)
|
||||
do_IRQ(AR531X_MISC_IRQ_UART0);
|
||||
else if (ar531x_misc_intrs & AR5315_ISR_WD)
|
||||
do_IRQ(AR531X_MISC_IRQ_WATCHDOG);
|
||||
else
|
||||
do_IRQ(AR531X_MISC_IRQ_NONE);
|
||||
} else if (pending & CAUSEF_IP7)
|
||||
do_IRQ(AR531X_IRQ_CPU_CLOCK);
|
||||
else
|
||||
do_IRQ(AR531X_IRQ_NONE);
|
||||
}
|
||||
|
||||
static void ar5315_gpio_intr_enable(unsigned int irq)
|
||||
{
|
||||
u32 gpio, mask;
|
||||
gpio = irq - AR531X_GPIO_IRQ_BASE;
|
||||
mask = 1 << gpio;
|
||||
gpiointmask |= mask;
|
||||
|
||||
/* reconfigure GPIO line as input */
|
||||
sysRegMask(AR5315_GPIO_CR, AR5315_GPIO_CR_M(gpio), AR5315_GPIO_CR_I(gpio));
|
||||
|
||||
/* Enable interrupt with edge detection */
|
||||
sysRegMask(AR5315_GPIO_INT, AR5315_GPIO_INT_M | AR5315_GPIO_INT_LVL_M, gpio | AR5315_GPIO_INT_LVL(3));
|
||||
}
|
||||
|
||||
static void ar5315_gpio_intr_disable(unsigned int irq)
|
||||
{
|
||||
u32 gpio, mask;
|
||||
gpio = irq - AR531X_GPIO_IRQ_BASE;
|
||||
mask = 1 << gpio;
|
||||
|
||||
gpiointmask &= ~mask;
|
||||
|
||||
/* Disable interrupt with edge detection */
|
||||
sysRegMask(AR5315_GPIO_INT, AR5315_GPIO_INT_M | AR5315_GPIO_INT_LVL_M, gpio | AR5315_GPIO_INT_LVL(0));
|
||||
}
|
||||
|
||||
/* Turn on the specified AR531X_MISC_IRQ interrupt */
|
||||
static unsigned int ar5315_gpio_intr_startup(unsigned int irq)
|
||||
{
|
||||
ar5315_gpio_intr_enable(irq);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Turn off the specified AR531X_MISC_IRQ interrupt */
|
||||
static void
|
||||
ar5315_gpio_intr_shutdown(unsigned int irq)
|
||||
{
|
||||
ar5315_gpio_intr_disable(irq);
|
||||
}
|
||||
|
||||
static void
|
||||
ar5315_gpio_intr_ack(unsigned int irq)
|
||||
{
|
||||
ar5315_gpio_intr_disable(irq);
|
||||
}
|
||||
|
||||
static void
|
||||
ar5315_gpio_intr_end(unsigned int irq)
|
||||
{
|
||||
if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
|
||||
ar5315_gpio_intr_enable(irq);
|
||||
}
|
||||
|
||||
static struct irq_chip ar5315_gpio_intr_controller = {
|
||||
.typename = "AR5315 GPIO",
|
||||
.startup = ar5315_gpio_intr_startup,
|
||||
.shutdown = ar5315_gpio_intr_shutdown,
|
||||
.enable = ar5315_gpio_intr_enable,
|
||||
.disable = ar5315_gpio_intr_disable,
|
||||
.ack = ar5315_gpio_intr_ack,
|
||||
.end = ar5315_gpio_intr_end,
|
||||
};
|
||||
|
||||
|
||||
/* Enable the specified AR531X_MISC_IRQ interrupt */
|
||||
static void
|
||||
ar5315_misc_intr_enable(unsigned int irq)
|
||||
{
|
||||
unsigned int imr;
|
||||
|
||||
imr = sysRegRead(AR5315_IMR);
|
||||
switch(irq)
|
||||
{
|
||||
case AR531X_MISC_IRQ_SPI:
|
||||
imr |= AR5315_ISR_SPI;
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_TIMER:
|
||||
imr |= AR5315_ISR_TIMER;
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_AHB_PROC:
|
||||
imr |= AR5315_ISR_AHB;
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_AHB_DMA:
|
||||
imr |= 0/* ?? */;
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_GPIO:
|
||||
imr |= AR5315_ISR_GPIO;
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_UART0:
|
||||
imr |= AR5315_ISR_UART0;
|
||||
break;
|
||||
|
||||
|
||||
case AR531X_MISC_IRQ_WATCHDOG:
|
||||
imr |= AR5315_ISR_WD;
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_LOCAL:
|
||||
imr |= 0/* ?? */;
|
||||
break;
|
||||
|
||||
}
|
||||
sysRegWrite(AR5315_IMR, imr);
|
||||
imr=sysRegRead(AR5315_IMR); /* flush write buffer */
|
||||
}
|
||||
|
||||
/* Disable the specified AR531X_MISC_IRQ interrupt */
|
||||
static void
|
||||
ar5315_misc_intr_disable(unsigned int irq)
|
||||
{
|
||||
unsigned int imr;
|
||||
|
||||
imr = sysRegRead(AR5315_IMR);
|
||||
switch(irq)
|
||||
{
|
||||
case AR531X_MISC_IRQ_SPI:
|
||||
imr &= ~AR5315_ISR_SPI;
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_TIMER:
|
||||
imr &= (~AR5315_ISR_TIMER);
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_AHB_PROC:
|
||||
imr &= (~AR5315_ISR_AHB);
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_AHB_DMA:
|
||||
imr &= 0/* ?? */;
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_GPIO:
|
||||
imr &= ~AR5315_ISR_GPIO;
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_UART0:
|
||||
imr &= (~AR5315_ISR_UART0);
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_WATCHDOG:
|
||||
imr &= (~AR5315_ISR_WD);
|
||||
break;
|
||||
|
||||
case AR531X_MISC_IRQ_LOCAL:
|
||||
imr &= ~0/* ?? */;
|
||||
break;
|
||||
|
||||
}
|
||||
sysRegWrite(AR5315_IMR, imr);
|
||||
sysRegRead(AR5315_IMR); /* flush write buffer */
|
||||
}
|
||||
|
||||
/* Turn on the specified AR531X_MISC_IRQ interrupt */
|
||||
static unsigned int
|
||||
ar5315_misc_intr_startup(unsigned int irq)
|
||||
{
|
||||
ar5315_misc_intr_enable(irq);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Turn off the specified AR531X_MISC_IRQ interrupt */
|
||||
static void
|
||||
ar5315_misc_intr_shutdown(unsigned int irq)
|
||||
{
|
||||
ar5315_misc_intr_disable(irq);
|
||||
}
|
||||
|
||||
static void
|
||||
ar5315_misc_intr_ack(unsigned int irq)
|
||||
{
|
||||
ar5315_misc_intr_disable(irq);
|
||||
}
|
||||
|
||||
static void
|
||||
ar5315_misc_intr_end(unsigned int irq)
|
||||
{
|
||||
if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
|
||||
ar5315_misc_intr_enable(irq);
|
||||
}
|
||||
|
||||
static struct irq_chip ar5315_misc_intr_controller = {
|
||||
.typename = "AR5315 misc",
|
||||
.startup = ar5315_misc_intr_startup,
|
||||
.shutdown = ar5315_misc_intr_shutdown,
|
||||
.enable = ar5315_misc_intr_enable,
|
||||
.disable = ar5315_misc_intr_disable,
|
||||
.ack = ar5315_misc_intr_ack,
|
||||
.end = ar5315_misc_intr_end,
|
||||
};
|
||||
|
||||
static irqreturn_t ar5315_ahb_proc_handler(int cpl, void *dev_id)
|
||||
{
|
||||
sysRegWrite(AR5315_AHB_ERR0,AHB_ERROR_DET);
|
||||
sysRegRead(AR5315_AHB_ERR1);
|
||||
|
||||
printk("AHB fatal error\n");
|
||||
machine_restart("AHB error"); /* Catastrophic failure */
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static struct irqaction ar5315_ahb_proc_interrupt = {
|
||||
.handler = ar5315_ahb_proc_handler,
|
||||
.flags = SA_INTERRUPT,
|
||||
.name = "ar5315_ahb_proc_interrupt",
|
||||
};
|
||||
|
||||
|
||||
static struct irqaction cascade = {
|
||||
.handler = no_action,
|
||||
.flags = SA_INTERRUPT,
|
||||
.name = "cascade",
|
||||
};
|
||||
|
||||
static void ar5315_gpio_intr_init(int irq_base)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = irq_base; i < irq_base + AR531X_GPIO_IRQ_COUNT; i++) {
|
||||
irq_desc[i].status = IRQ_DISABLED;
|
||||
irq_desc[i].action = NULL;
|
||||
irq_desc[i].depth = 1;
|
||||
irq_desc[i].chip = &ar5315_gpio_intr_controller;
|
||||
}
|
||||
setup_irq(AR531X_MISC_IRQ_GPIO, &cascade);
|
||||
gpiointval = sysRegRead(AR5315_GPIO_DI);
|
||||
}
|
||||
|
||||
void ar5315_misc_intr_init(int irq_base)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = irq_base; i < irq_base + AR531X_MISC_IRQ_COUNT; i++) {
|
||||
irq_desc[i].status = IRQ_DISABLED;
|
||||
irq_desc[i].action = NULL;
|
||||
irq_desc[i].depth = 1;
|
||||
irq_desc[i].chip = &ar5315_misc_intr_controller;
|
||||
}
|
||||
setup_irq(AR531X_MISC_IRQ_AHB_PROC, &ar5315_ahb_proc_interrupt);
|
||||
setup_irq(AR5315_IRQ_MISC_INTRS, &cascade);
|
||||
ar5315_gpio_intr_init(AR531X_GPIO_IRQ_BASE);
|
||||
}
|
||||
|
||||
@ -3,8 +3,32 @@
|
||||
|
||||
#include <asm/cpu-info.h>
|
||||
#include <ar531x_platform.h>
|
||||
#include "ar5312.h"
|
||||
#include "ar5315.h"
|
||||
#include "ar5312/ar5312.h"
|
||||
#include "ar5315/ar5315.h"
|
||||
|
||||
|
||||
/*
|
||||
* C access to CLZ instruction
|
||||
* (count leading zeroes).
|
||||
*/
|
||||
static inline int clz(unsigned long val)
|
||||
{
|
||||
int ret;
|
||||
|
||||
__asm__ volatile (
|
||||
".set\tnoreorder\n\t"
|
||||
".set\tnoat\n\t"
|
||||
".set\tmips32\n\t"
|
||||
"clz\t%0,%1\n\t"
|
||||
".set\tmips0\n\t"
|
||||
".set\tat\n\t"
|
||||
".set\treorder"
|
||||
: "=r" (ret)
|
||||
: "r" (val)
|
||||
);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* Atheros CPUs before the AR2315 are using MIPS 4Kc core, later designs are
|
||||
@ -27,9 +51,6 @@
|
||||
#define DO_AR5315(...)
|
||||
#endif
|
||||
|
||||
#include <irq.h>
|
||||
|
||||
#define AR531X_HIGH_PRIO 0x10
|
||||
#define AR531X_MISC_IRQ_BASE 0x20
|
||||
#define AR531X_GPIO_IRQ_BASE 0x30
|
||||
|
||||
@ -47,7 +68,8 @@
|
||||
#define AR531X_MISC_IRQ_UART0_DMA AR531X_MISC_IRQ_BASE+6
|
||||
#define AR531X_MISC_IRQ_WATCHDOG AR531X_MISC_IRQ_BASE+7
|
||||
#define AR531X_MISC_IRQ_LOCAL AR531X_MISC_IRQ_BASE+8
|
||||
#define AR531X_MISC_IRQ_COUNT 9
|
||||
#define AR531X_MISC_IRQ_SPI AR531X_MISC_IRQ_BASE+9
|
||||
#define AR531X_MISC_IRQ_COUNT 10
|
||||
|
||||
/* GPIO Interrupts [0..7], share AR531X_MISC_IRQ_GPIO */
|
||||
#define AR531X_GPIO_IRQ_NONE AR531X_MISC_IRQ_BASE+0
|
||||
@ -127,5 +149,18 @@ extern void ar5315_prom_init(void);
|
||||
extern void ar5315_misc_intr_init(int irq_base);
|
||||
extern void ar5315_plat_setup(void);
|
||||
extern asmlinkage void ar5315_irq_dispatch(void);
|
||||
extern void ar5315_pci_irq(int irq);
|
||||
static inline u32 sysRegMask(u32 phys, u32 mask, u32 value)
|
||||
{
|
||||
u32 reg;
|
||||
|
||||
reg = sysRegRead(phys);
|
||||
reg &= ~mask;
|
||||
reg |= value & mask;
|
||||
sysRegWrite(phys, reg);
|
||||
reg = sysRegRead(phys); /* flush write to the hardware */
|
||||
|
||||
return reg;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
@ -23,6 +23,7 @@
|
||||
#include <linux/serial.h>
|
||||
#include <linux/serial_core.h>
|
||||
#include <asm/bootinfo.h>
|
||||
#include <asm/irq_cpu.h>
|
||||
#include <asm/io.h>
|
||||
#include "ar531x.h"
|
||||
|
||||
@ -189,4 +190,18 @@ void __init plat_timer_setup(struct irqaction *irq)
|
||||
write_c0_compare(count + 1000);
|
||||
}
|
||||
|
||||
asmlinkage void plat_irq_dispatch(void)
|
||||
{
|
||||
DO_AR5312(ar5312_irq_dispatch();)
|
||||
DO_AR5315(ar5315_irq_dispatch();)
|
||||
}
|
||||
|
||||
void __init arch_init_irq(void)
|
||||
{
|
||||
clear_c0_status(ST0_IM);
|
||||
mips_cpu_irq_init();
|
||||
|
||||
/* Initialize interrupt controllers */
|
||||
DO_AR5312(ar5312_misc_intr_init(AR531X_MISC_IRQ_BASE);)
|
||||
DO_AR5315(ar5315_misc_intr_init(AR531X_MISC_IRQ_BASE);)
|
||||
}
|
||||
|
||||
@ -1,86 +0,0 @@
|
||||
/*
|
||||
* This file is subject to the terms and conditions of the GNU General Public
|
||||
* License. See the file "COPYING" in the main directory of this archive
|
||||
* for more details.
|
||||
*
|
||||
* Copyright (C) 2003 Atheros Communications, Inc., All Rights Reserved.
|
||||
* Copyright (C) 2006 FON Technology, SL.
|
||||
* Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
|
||||
* Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
|
||||
*/
|
||||
|
||||
/*
|
||||
* Interrupt support for AR531X WiSOC.
|
||||
*/
|
||||
|
||||
#include <linux/autoconf.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/kernel_stat.h>
|
||||
#include <linux/signal.h>
|
||||
#include <linux/sched.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/random.h>
|
||||
#include <linux/pm.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/reboot.h>
|
||||
#include <linux/irq.h>
|
||||
#include <asm/bootinfo.h>
|
||||
#include <asm/mipsregs.h>
|
||||
#include <asm/irq_cpu.h>
|
||||
#include "ar531x.h"
|
||||
|
||||
|
||||
/* ARGSUSED */
|
||||
irqreturn_t
|
||||
spurious_irq_handler(int cpl, void *dev_id)
|
||||
{
|
||||
/*
|
||||
printk("spurious_irq_handler: %d cause=0x%8.8x status=0x%8.8x\n",
|
||||
cpl, cause_intrs, status_intrs);
|
||||
*/
|
||||
return IRQ_NONE;
|
||||
}
|
||||
|
||||
/* ARGSUSED */
|
||||
irqreturn_t
|
||||
spurious_misc_handler(int cpl, void *dev_id)
|
||||
{
|
||||
/*
|
||||
printk("spurious_misc_handler: 0x%x isr=0x%8.8x imr=0x%8.8x\n",
|
||||
cpl, ar531x_isr, ar531x_imr);
|
||||
*/
|
||||
return IRQ_NONE;
|
||||
}
|
||||
|
||||
static struct irqaction spurious_irq = {
|
||||
.handler = spurious_irq_handler,
|
||||
.flags = SA_INTERRUPT,
|
||||
.name = "spurious_irq",
|
||||
};
|
||||
|
||||
static struct irqaction spurious_misc = {
|
||||
.handler = spurious_misc_handler,
|
||||
.flags = SA_INTERRUPT,
|
||||
.name = "spurious_misc",
|
||||
};
|
||||
|
||||
asmlinkage void plat_irq_dispatch(void)
|
||||
{
|
||||
DO_AR5312(ar5312_irq_dispatch();)
|
||||
DO_AR5315(ar5315_irq_dispatch();)
|
||||
}
|
||||
|
||||
void __init arch_init_irq(void)
|
||||
{
|
||||
clear_c0_status(ST0_IM);
|
||||
mips_cpu_irq_init();
|
||||
|
||||
/* Initialize interrupt controllers */
|
||||
DO_AR5312(ar5312_misc_intr_init(AR531X_MISC_IRQ_BASE);)
|
||||
DO_AR5315(ar5315_misc_intr_init(AR531X_MISC_IRQ_BASE);)
|
||||
|
||||
/* Default "spurious interrupt" handlers */
|
||||
setup_irq(AR531X_IRQ_NONE, &spurious_irq);
|
||||
setup_irq(AR531X_MISC_IRQ_NONE, &spurious_misc);
|
||||
}
|
||||
108
target/linux/atheros-2.6/files/arch/mips/atheros/reset.c
Normal file
108
target/linux/atheros-2.6/files/arch/mips/atheros/reset.c
Normal file
@ -0,0 +1,108 @@
|
||||
#include <linux/module.h>
|
||||
#include <linux/timer.h>
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/kobject.h>
|
||||
#include <linux/workqueue.h>
|
||||
#include <linux/skbuff.h>
|
||||
#include <linux/netlink.h>
|
||||
#include <net/sock.h>
|
||||
#include <asm/uaccess.h>
|
||||
#include "ar531x.h"
|
||||
#include "ar5315/ar5315.h"
|
||||
|
||||
struct event_t {
|
||||
struct work_struct wq;
|
||||
int set;
|
||||
long int jiffies;
|
||||
};
|
||||
|
||||
extern struct sock *uevent_sock;
|
||||
extern u64 uevent_next_seqnum(void);
|
||||
static int seen;
|
||||
|
||||
static inline void add_msg(struct sk_buff *skb, char *msg)
|
||||
{
|
||||
char *scratch;
|
||||
scratch = skb_put(skb, strlen(msg) + 1);
|
||||
sprintf(scratch, msg);
|
||||
}
|
||||
|
||||
static void hotplug_button(struct work_struct *wq)
|
||||
{
|
||||
struct sk_buff *skb;
|
||||
struct event_t *event;
|
||||
size_t len;
|
||||
char *scratch, *s;
|
||||
char buf[128];
|
||||
|
||||
event = container_of(wq, struct event_t, wq);
|
||||
if (!uevent_sock)
|
||||
goto done;
|
||||
|
||||
/* allocate message with the maximum possible size */
|
||||
s = event->set ? "pressed" : "released";
|
||||
len = strlen(s) + 2;
|
||||
skb = alloc_skb(len + 2048, GFP_KERNEL);
|
||||
if (!skb)
|
||||
goto done;
|
||||
|
||||
/* add header */
|
||||
scratch = skb_put(skb, len);
|
||||
sprintf(scratch, "%s@",s);
|
||||
|
||||
/* copy keys to our continuous event payload buffer */
|
||||
add_msg(skb, "HOME=/");
|
||||
add_msg(skb, "PATH=/sbin:/bin:/usr/sbin:/usr/bin");
|
||||
add_msg(skb, "SUBSYSTEM=button");
|
||||
add_msg(skb, "BUTTON=reset");
|
||||
add_msg(skb, (event->set ? "ACTION=pressed" : "ACTION=released"));
|
||||
sprintf(buf, "SEEN=%ld", (event->jiffies - seen)/HZ);
|
||||
add_msg(skb, buf);
|
||||
snprintf(buf, 128, "SEQNUM=%llu", uevent_next_seqnum());
|
||||
add_msg(skb, buf);
|
||||
|
||||
NETLINK_CB(skb).dst_group = 1;
|
||||
netlink_broadcast(uevent_sock, skb, 0, 1, GFP_KERNEL);
|
||||
|
||||
done:
|
||||
kfree(event);
|
||||
}
|
||||
|
||||
static irqreturn_t button_handler(int irq, void *dev_id)
|
||||
{
|
||||
static int pressed = 0;
|
||||
struct event_t *event;
|
||||
u32 gpio = ~0;
|
||||
|
||||
event = (struct event_t *) kzalloc(sizeof(struct event_t), GFP_ATOMIC);
|
||||
if (!event)
|
||||
return IRQ_NONE;
|
||||
|
||||
pressed = !pressed;
|
||||
|
||||
DO_AR5315(gpio = sysRegRead(AR5315_GPIO_DI);)
|
||||
gpio &= 1 << (irq - AR531X_GPIO_IRQ_BASE);
|
||||
|
||||
event->set = gpio;
|
||||
event->jiffies = jiffies;
|
||||
|
||||
INIT_WORK(&event->wq, (void *)(void *)hotplug_button);
|
||||
schedule_work(&event->wq);
|
||||
|
||||
seen = jiffies;
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
int __init ar531x_init_reset(void)
|
||||
{
|
||||
struct ar531x_boarddata *bcfg;
|
||||
bcfg = (struct ar531x_boarddata *) board_config;
|
||||
|
||||
seen = jiffies;
|
||||
request_irq(AR531X_GPIO_IRQ_BASE + bcfg->resetConfigGpio, &button_handler, IRQF_SAMPLE_RANDOM, "ar531x_reset", NULL);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
module_init(ar531x_init_reset);
|
||||
Loading…
Reference in New Issue
Block a user