* 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.
+ * with this program; If not, see <http://www.gnu.org/licenses/>.
*/
#include "carl9170.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;
- }
-
- timer_init(1, (fw.ticks_per_usec * 25) >> 1);
-}
-
static void init(void)
{
led_init();
reboot();
}
-static void timer0_isr(void)
+static void tally_update(void)
{
- wlan_timer();
-
-#ifdef CONFIG_CARL9170FW_GPIO_INTERRUPT
- gpio_timer();
-#endif /* CONFIG_CARL9170FW_GPIO_INTERRUPT */
+ unsigned int time;
+ time = get_clock_counter();
#ifdef CONFIG_CARL9170FW_RADIO_FUNCTIONS
- tally_update();
-#endif /* CONFIG_CARL9170FW_RADIO_FUNCTIONS */
+ if (fw.phy.state == CARL9170_PHY_ON) {
+ unsigned int boff, delta;
-#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 */
-}
+ delta = (time - fw.tally_clock);
-static void timer1_isr(void)
-{
-}
-
-static void handle_timer(void)
-{
- uint32_t intr;
+ fw.tally.active += delta;
- 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);
-
- HANDLER(intr, BIT(1), timer1_isr);
-
- if (intr)
- DBG("Unhandled Timer Event %x", (unsigned int) intr);
-
-#undef HANDLER
+ 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;
+ }
+#endif /* CONFIG_CARL9170FW_RADIO_FUNCTIONS */
+ fw.tally_clock = time;
+ fw.counter++;
}
static void __noreturn main_loop(void)
handle_timer();
- fw.counter++;
+ tally_update();
}
}
* we put _start() there with the linker script carl9170.lds.
*/
-void __section(boot) start(void)
+void __in_section(boot) __noreturn __visible start(void)
{
clock_set(AHB_40MHZ_OSC, true);