diff options
Diffstat (limited to 'carl9170fw/carlfw/src/main.c')
| -rw-r--r-- | carl9170fw/carlfw/src/main.c | 256 |
1 files changed, 0 insertions, 256 deletions
diff --git a/carl9170fw/carlfw/src/main.c b/carl9170fw/carlfw/src/main.c deleted file mode 100644 index 17cbaf9..0000000 --- a/carl9170fw/carlfw/src/main.c +++ /dev/null @@ -1,256 +0,0 @@ -/* - * carl9170 firmware - used by the ar9170 wireless device - * - * initialization and main() loop - * - * Copyright (c) 2000-2005 ZyDAS Technology Corporation - * Copyright (c) 2007-2009 Atheros Communications, Inc. - * Copyright 2009 Johannes Berg <johannes@sipsolutions.net> - * 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 - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * 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., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "carl9170.h" -#include "timer.h" -#include "hostif.h" -#include "printf.h" -#include "gpio.h" -#include "wl.h" -#include "rf.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)); -} - -void clock_set(enum cpu_clock_t clock_, bool on) -{ - /* - * Word of Warning! - * This setting does more than just mess with the CPU Clock. - * So watch out, if you need _stable_ timer interrupts. - */ -#ifdef CONFIG_CARL9170FW_RADIO_FUNCTIONS - if (fw.phy.frequency < 3000000) - set(AR9170_PWR_REG_PLL_ADDAC, 0x5163); - else - set(AR9170_PWR_REG_PLL_ADDAC, 0x5143); -#else - set(AR9170_PWR_REG_PLL_ADDAC, 0x5163); -#endif /* CONFIG_CARL9170FW_RADIO_FUNCTIONS */ - - fw.ticks_per_usec = GET_VAL(AR9170_PWR_PLL_ADDAC_DIV, - get(AR9170_PWR_REG_PLL_ADDAC)); - - set(AR9170_PWR_REG_CLOCK_SEL, (uint32_t) ((on ? 0x70 : 0x600) | clock_)); - - switch (clock_) { - case AHB_20_22MHZ: - fw.ticks_per_usec >>= 1; - case AHB_40MHZ_OSC: - case AHB_40_44MHZ: - fw.ticks_per_usec >>= 1; - case AHB_80_88MHZ: - break; - } -} - -static void init(void) -{ - led_init(); - -#ifdef CONFIG_CARL9170FW_DEBUG_UART - uart_init(); -#endif /* CONFIG_CARL9170FW_DEBUG_UART */ - - /* 25/50/100ms timer (depends on cpu clock) */ - timer_init(0, 50000); - - /* USB init */ - usb_init(); - - /* initialize DMA memory */ - memset(&dma_mem, 0, sizeof(dma_mem)); - - /* fill DMA rings */ - dma_init_descriptors(); - - /* clear all interrupt */ - set(AR9170_MAC_REG_INT_CTRL, 0xffff); - - orl(AR9170_MAC_REG_AFTER_PNP, 1); - - /* Init watch dog control flag */ - fw.watchdog_enable = 1; - - set(AR9170_TIMER_REG_WATCH_DOG, AR9170_WATCH_DOG_TIMER); - -#ifdef CONFIG_CARL9170FW_GPIO_INTERRUPT - fw.cached_gpio_state.gpio = get(AR9170_GPIO_REG_PORT_DATA) & - CARL9170_GPIO_MASK; -#endif /* CONFIG_CARL9170FW_GPIO_INTERRUPT */ - - /* this will get the downqueue moving. */ - down_trigger(); -} - -static void handle_fw(void) -{ - if (fw.watchdog_enable == 1) - set(AR9170_TIMER_REG_WATCH_DOG, AR9170_WATCH_DOG_TIMER); - - if (fw.reboot) - reboot(); -} - -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 tally_update(void) -{ - unsigned int boff, time, delta; - - time = get_clock_counter(); - if (fw.phy.state == CARL9170_PHY_ON) { - delta = (time - fw.tally_clock); - - fw.tally.active += delta; - - boff = get(AR9170_MAC_REG_BACKOFF_STATUS); - if (boff & AR9170_MAC_BACKOFF_TX_PE) - fw.tally.tx_time += delta; - if (boff & AR9170_MAC_BACKOFF_CCA) - fw.tally.cca += delta; - } - - fw.tally_clock = time; - fw.counter++; -} - -static void __noreturn main_loop(void) -{ - /* main loop */ - while (1) { - handle_fw(); - - /* - * Due to frame order persevation, the wlan subroutines - * must be executed before handle_host_interface. - */ - handle_wlan(); - - handle_host_interface(); - - handle_usb(); - - handle_timer(); - - tally_update(); - } -} - -/* - * 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 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 __section(boot) start(void) -{ - clock_set(AHB_40MHZ_OSC, true); - - /* watchdog magic pattern check */ - if ((get(AR9170_PWR_REG_WATCH_DOG_MAGIC) & 0xffff0000) == 0x12340000) { - /* watch dog warm start */ - incl(AR9170_PWR_REG_WATCH_DOG_MAGIC); - usb_trigger_out(); - } else if ((get(AR9170_PWR_REG_WATCH_DOG_MAGIC) & 0xffff0000) == 0x98760000) { - /* suspend/resume */ - } - - /* write the magic pattern for watch dog */ - andl(AR9170_PWR_REG_WATCH_DOG_MAGIC, 0xFFFF); - orl(AR9170_PWR_REG_WATCH_DOG_MAGIC, 0x12340000); - - init(); - -#ifdef CONFIG_CARL9170FW_DEBUG - - BUG("TEST BUG"); - BUG_ON(0x2b || !0x2b); - INFO("INFO MESSAGE"); - - /* a set of unique characters to detect transfer data corruptions */ - DBG("AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz" - " ~`!1@2#3$4%%5^6&7*8(9)0_-+={[}]|\\:;\"'<,>.?/"); -#endif /* CONFIG_CARL9170FW_DEBUG */ - - /* - * Tell the host, that the firmware has booted and is - * now ready to process requests. - */ - send_cmd_to_host(0, CARL9170_RSP_BOOT, 0x00, NULL); - main_loop(); -} |