* Copyright (c) 2000-2005 ZyDAS Technology Corporation
* Copyright (c) 2007-2009 Atheros Communications, Inc.
* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
- * Copyright 2009, 2010 Christian Lamparter <chunkeey@googlemail.com>
+ * Copyright 2009-2011 Christian Lamparter <chunkeey@googlemail.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
#include "printf.h"
#include "gpio.h"
#include "wl.h"
+#include "usb.h"
#define AR9170_WATCH_DOG_TIMER 0x100
+static void timer_init(const unsigned int timer, const unsigned int interval)
+{
+ /* Set timer to periodic mode */
+ orl(AR9170_TIMER_REG_CONTROL, BIT(timer));
+
+ /* Set time interval */
+ set(AR9170_TIMER_REG_TIMER0 + (timer << 2), interval - 1);
+
+ /* Clear timer interrupt flag */
+ orl(AR9170_TIMER_REG_INTERRUPT, BIT(timer));
+}
+
static void init(void)
{
led_init();
/* USB init */
usb_init();
+ /* initialize DMA memory */
memset(&dma_mem, 0, sizeof(dma_mem));
/* fill DMA rings */
orl(AR9170_MAC_REG_AFTER_PNP, 1);
/* Init watch dog control flag */
-#ifdef CONFIG_CARL9170FW_WATCHDOG
fw.watchdog_enable = 1;
set(AR9170_TIMER_REG_WATCH_DOG, AR9170_WATCH_DOG_TIMER);
-#else
- fw.watchdog_enable = 0;
- set(AR9170_TIMER_REG_WATCH_DOG, 0xffff);
-#endif /* CONFIG_CARL9170FW_WATCHDOG */
#ifdef CONFIG_CARL9170FW_GPIO_INTERRUPT
fw.cached_gpio_state.gpio = get(AR9170_GPIO_REG_PORT_DATA) &
reboot();
}
-static void __attribute__((noreturn)) main_loop(void)
+static void timer0_isr(void)
+{
+ wlan_timer();
+
+#ifdef CONFIG_CARL9170FW_GPIO_INTERRUPT
+ gpio_timer();
+#endif /* CONFIG_CARL9170FW_GPIO_INTERRUPT */
+
+#ifdef CONFIG_CARL9170FW_DEBUG_LED_HEARTBEAT
+ set(AR9170_GPIO_REG_PORT_DATA, get(AR9170_GPIO_REG_PORT_DATA) ^ 1);
+#endif /* CONFIG_CARL9170FW_DEBUG_LED_HEARTBEAT */
+}
+
+static void handle_timer(void)
+{
+ uint32_t intr;
+
+ intr = get(AR9170_TIMER_REG_INTERRUPT);
+
+ /* ACK timer interrupt */
+ set(AR9170_TIMER_REG_INTERRUPT, intr);
+
+#define HANDLER(intr, flag, func) \
+ do { \
+ if ((intr & flag) != 0) { \
+ intr &= ~flag; \
+ func(); \
+ } \
+ } while (0)
+
+ HANDLER(intr, BIT(0), timer0_isr);
+
+ if (intr)
+ DBG("Unhandled Timer Event %x", (unsigned int) intr);
+
+#undef HANDLER
+}
+
+static void __noreturn main_loop(void)
{
/* main loop */
while (1) {
/*
* The bootcode will work with the device driver to load the firmware
- * onto the device's Program SRAM. The Program SRAM has a size of 32 KB
- * and also contains the stack, which grows down from 0x208000.
+ * onto the device's Program SRAM. The Program SRAM has a size of 16 KB
+ * and also contains the stack, which grows down from 0x204000.
*
* The Program SRAM starts at address 0x200000 on the device.
* The firmware entry point (0x200004) is located in boot.S.
* we put _start() there with the linker script carl9170.lds.
*/
-void __attribute__((noreturn)) start(void)
+void start(void)
{
- clock_set(true, AHB_40MHZ_OSC);
-
- /* initialize firmware context and DMA memory */
- memset(&fw, 0, sizeof(fw));
+ clock_set(AHB_40MHZ_OSC, true);
/* watchdog magic pattern check */
if ((get(AR9170_PWR_REG_WATCH_DOG_MAGIC) & 0xffff0000) == 0x12340000) {