carl9170 firmware: set radar pattern and tx mode setup

[carl9170fw.git] / carlfw / src / main.c

diff --git a/carlfw/src/main.c b/carlfw/src/main.c
index b11f0489257068d3c21564c294e9835db30d2546..b5f26f9ee33e72764207166bf85ee336fa7ddcbf 100644 (file)
--- a/carlfw/src/main.c
+++ b/carlfw/src/main.c
@@ -29,7 +29,9 @@
 #include "printf.h"
 #include "gpio.h"
 #include "wl.h"
+#include "rf.h"
 #include "usb.h"
+#include "radar.h"
 
 #define AR9170_WATCH_DOG_TIMER            0x100
 
@@ -45,6 +47,38 @@ static void timer_init(const unsigned int timer, const unsigned int interval)
        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();
@@ -71,14 +105,9 @@ static void init(void)
        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) &
@@ -136,6 +165,59 @@ static void handle_timer(void)
 #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++;
+}
+
+#ifdef CONFIG_CARL9170FW_RADAR
+static void radar_pattern_generator(void)
+{
+       if (fw.phy.state == CARL9170_PHY_ON) {
+               if (fw.wlan.soft_radar == NO_RADAR ||
+                   fw.wlan.soft_radar >= __CARL9170FW_NUM_RADARS)
+                       return;
+
+               const struct radar_info *radar = &radars[fw.wlan.soft_radar];
+               if (radar->pulses >= fw.wlan.pattern_index) {
+                       fw.wlan.pattern_index = 0;
+               }
+
+               if (radar->pulses > fw.wlan.pattern_index) {
+                       const struct radar_info_pattern *pattern = &radar->pattern[fw.wlan.pattern_index];
+                       if (is_after_usecs(fw.wlan.radar_last, pattern->pulse_interval)) {
+                               fw.wlan.radar_last = get_clock_counter();
+                               set(0x1C3BC0, pattern->pulse_pattern);
+                               set(0x1C3BBC, pattern->pulse_mode);
+                               udelay(pattern->pulse_width);
+                               set(0x1C3BBC, ~pattern->pulse_mode);
+                               fw.wlan.pattern_index++;
+                       }
+               }
+       }
+}
+#else
+static void radar_pattern_generator(void)
+{
+}
+#endif /* CONFIG_CARL9170FW_RADAR */
+
 static void __noreturn main_loop(void)
 {
        /* main loop */
@@ -154,7 +236,9 @@ static void __noreturn main_loop(void)
 
                handle_timer();
 
-               fw.counter++;
+               tally_update();
+
+               radar_pattern_generator();
        }
 }
 
@@ -168,7 +252,7 @@ static void __noreturn main_loop(void)
  * we put _start() there with the linker script carl9170.lds.
  */
 
-void start(void)
+void __section(boot) __noreturn __visible start(void)
 {
        clock_set(AHB_40MHZ_OSC, true);