ath9k_hw: Abstract the routine which returns interrupt status
Also move interrupt related code to mac.c
Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/mac.c b/drivers/net/wireless/ath/ath9k/mac.c
index a8dab23..4a36ec5 100644
--- a/drivers/net/wireless/ath/ath9k/mac.c
+++ b/drivers/net/wireless/ath/ath9k/mac.c
@@ -31,6 +31,158 @@
*ds_link = &((struct ath_desc *)ds)->ds_link;
}
+static bool ar9002_hw_get_isr(struct ath_hw *ah, enum ath9k_int *masked)
+{
+ u32 isr = 0;
+ u32 mask2 = 0;
+ struct ath9k_hw_capabilities *pCap = &ah->caps;
+ u32 sync_cause = 0;
+ bool fatal_int = false;
+ struct ath_common *common = ath9k_hw_common(ah);
+
+ if (!AR_SREV_9100(ah)) {
+ if (REG_READ(ah, AR_INTR_ASYNC_CAUSE) & AR_INTR_MAC_IRQ) {
+ if ((REG_READ(ah, AR_RTC_STATUS) & AR_RTC_STATUS_M)
+ == AR_RTC_STATUS_ON) {
+ isr = REG_READ(ah, AR_ISR);
+ }
+ }
+
+ sync_cause = REG_READ(ah, AR_INTR_SYNC_CAUSE) &
+ AR_INTR_SYNC_DEFAULT;
+
+ *masked = 0;
+
+ if (!isr && !sync_cause)
+ return false;
+ } else {
+ *masked = 0;
+ isr = REG_READ(ah, AR_ISR);
+ }
+
+ if (isr) {
+ if (isr & AR_ISR_BCNMISC) {
+ u32 isr2;
+ isr2 = REG_READ(ah, AR_ISR_S2);
+ if (isr2 & AR_ISR_S2_TIM)
+ mask2 |= ATH9K_INT_TIM;
+ if (isr2 & AR_ISR_S2_DTIM)
+ mask2 |= ATH9K_INT_DTIM;
+ if (isr2 & AR_ISR_S2_DTIMSYNC)
+ mask2 |= ATH9K_INT_DTIMSYNC;
+ if (isr2 & (AR_ISR_S2_CABEND))
+ mask2 |= ATH9K_INT_CABEND;
+ if (isr2 & AR_ISR_S2_GTT)
+ mask2 |= ATH9K_INT_GTT;
+ if (isr2 & AR_ISR_S2_CST)
+ mask2 |= ATH9K_INT_CST;
+ if (isr2 & AR_ISR_S2_TSFOOR)
+ mask2 |= ATH9K_INT_TSFOOR;
+ }
+
+ isr = REG_READ(ah, AR_ISR_RAC);
+ if (isr == 0xffffffff) {
+ *masked = 0;
+ return false;
+ }
+
+ *masked = isr & ATH9K_INT_COMMON;
+
+ if (ah->config.rx_intr_mitigation) {
+ if (isr & (AR_ISR_RXMINTR | AR_ISR_RXINTM))
+ *masked |= ATH9K_INT_RX;
+ }
+
+ if (isr & (AR_ISR_RXOK | AR_ISR_RXERR))
+ *masked |= ATH9K_INT_RX;
+ if (isr &
+ (AR_ISR_TXOK | AR_ISR_TXDESC | AR_ISR_TXERR |
+ AR_ISR_TXEOL)) {
+ u32 s0_s, s1_s;
+
+ *masked |= ATH9K_INT_TX;
+
+ s0_s = REG_READ(ah, AR_ISR_S0_S);
+ ah->intr_txqs |= MS(s0_s, AR_ISR_S0_QCU_TXOK);
+ ah->intr_txqs |= MS(s0_s, AR_ISR_S0_QCU_TXDESC);
+
+ s1_s = REG_READ(ah, AR_ISR_S1_S);
+ ah->intr_txqs |= MS(s1_s, AR_ISR_S1_QCU_TXERR);
+ ah->intr_txqs |= MS(s1_s, AR_ISR_S1_QCU_TXEOL);
+ }
+
+ if (isr & AR_ISR_RXORN) {
+ ath_print(common, ATH_DBG_INTERRUPT,
+ "receive FIFO overrun interrupt\n");
+ }
+
+ if (!AR_SREV_9100(ah)) {
+ if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
+ u32 isr5 = REG_READ(ah, AR_ISR_S5_S);
+ if (isr5 & AR_ISR_S5_TIM_TIMER)
+ *masked |= ATH9K_INT_TIM_TIMER;
+ }
+ }
+
+ *masked |= mask2;
+ }
+
+ if (AR_SREV_9100(ah))
+ return true;
+
+ if (isr & AR_ISR_GENTMR) {
+ u32 s5_s;
+
+ s5_s = REG_READ(ah, AR_ISR_S5_S);
+ if (isr & AR_ISR_GENTMR) {
+ ah->intr_gen_timer_trigger =
+ MS(s5_s, AR_ISR_S5_GENTIMER_TRIG);
+
+ ah->intr_gen_timer_thresh =
+ MS(s5_s, AR_ISR_S5_GENTIMER_THRESH);
+
+ if (ah->intr_gen_timer_trigger)
+ *masked |= ATH9K_INT_GENTIMER;
+
+ }
+ }
+
+ if (sync_cause) {
+ fatal_int =
+ (sync_cause &
+ (AR_INTR_SYNC_HOST1_FATAL | AR_INTR_SYNC_HOST1_PERR))
+ ? true : false;
+
+ if (fatal_int) {
+ if (sync_cause & AR_INTR_SYNC_HOST1_FATAL) {
+ ath_print(common, ATH_DBG_ANY,
+ "received PCI FATAL interrupt\n");
+ }
+ if (sync_cause & AR_INTR_SYNC_HOST1_PERR) {
+ ath_print(common, ATH_DBG_ANY,
+ "received PCI PERR interrupt\n");
+ }
+ *masked |= ATH9K_INT_FATAL;
+ }
+ if (sync_cause & AR_INTR_SYNC_RADM_CPL_TIMEOUT) {
+ ath_print(common, ATH_DBG_INTERRUPT,
+ "AR_INTR_SYNC_RADM_CPL_TIMEOUT\n");
+ REG_WRITE(ah, AR_RC, AR_RC_HOSTIF);
+ REG_WRITE(ah, AR_RC, 0);
+ *masked |= ATH9K_INT_FATAL;
+ }
+ if (sync_cause & AR_INTR_SYNC_LOCAL_TIMEOUT) {
+ ath_print(common, ATH_DBG_INTERRUPT,
+ "AR_INTR_SYNC_LOCAL_TIMEOUT\n");
+ }
+
+ REG_WRITE(ah, AR_INTR_SYNC_CAUSE_CLR, sync_cause);
+ (void) REG_READ(ah, AR_INTR_SYNC_CAUSE_CLR);
+ }
+
+ return true;
+}
+
void ar9002_hw_attach_mac_ops(struct ath_hw *ah)
{
struct ath_hw_ops *ops = ath9k_hw_ops(ah);
@@ -38,6 +190,7 @@
ops->rx_enable = ar9002_hw_rx_enable;
ops->set_desc_link = ar9002_hw_set_desc_link;
ops->get_desc_link = ar9002_hw_get_desc_link;
+ ops->get_isr = ar9002_hw_get_isr;
}
static void ath9k_hw_set_txq_interrupts(struct ath_hw *ah,
@@ -1089,3 +1242,140 @@
return ath9k_hw_setuptxqueue(ah, ATH9K_TX_QUEUE_BEACON, &qi);
}
EXPORT_SYMBOL(ath9k_hw_beaconq_setup);
+
+bool ath9k_hw_intrpend(struct ath_hw *ah)
+{
+ u32 host_isr;
+
+ if (AR_SREV_9100(ah))
+ return true;
+
+ host_isr = REG_READ(ah, AR_INTR_ASYNC_CAUSE);
+ if ((host_isr & AR_INTR_MAC_IRQ) && (host_isr != AR_INTR_SPURIOUS))
+ return true;
+
+ host_isr = REG_READ(ah, AR_INTR_SYNC_CAUSE);
+ if ((host_isr & AR_INTR_SYNC_DEFAULT)
+ && (host_isr != AR_INTR_SPURIOUS))
+ return true;
+
+ return false;
+}
+EXPORT_SYMBOL(ath9k_hw_intrpend);
+
+enum ath9k_int ath9k_hw_set_interrupts(struct ath_hw *ah,
+ enum ath9k_int ints)
+{
+ enum ath9k_int omask = ah->imask;
+ u32 mask, mask2;
+ struct ath9k_hw_capabilities *pCap = &ah->caps;
+ struct ath_common *common = ath9k_hw_common(ah);
+
+ ath_print(common, ATH_DBG_INTERRUPT, "0x%x => 0x%x\n", omask, ints);
+
+ if (omask & ATH9K_INT_GLOBAL) {
+ ath_print(common, ATH_DBG_INTERRUPT, "disable IER\n");
+ REG_WRITE(ah, AR_IER, AR_IER_DISABLE);
+ (void) REG_READ(ah, AR_IER);
+ if (!AR_SREV_9100(ah)) {
+ REG_WRITE(ah, AR_INTR_ASYNC_ENABLE, 0);
+ (void) REG_READ(ah, AR_INTR_ASYNC_ENABLE);
+
+ REG_WRITE(ah, AR_INTR_SYNC_ENABLE, 0);
+ (void) REG_READ(ah, AR_INTR_SYNC_ENABLE);
+ }
+ }
+
+ /* TODO: global int Ref count */
+ mask = ints & ATH9K_INT_COMMON;
+ mask2 = 0;
+
+ if (ints & ATH9K_INT_TX) {
+ if (ah->config.tx_intr_mitigation)
+ mask |= AR_IMR_TXMINTR | AR_IMR_TXINTM;
+ if (ah->txok_interrupt_mask)
+ mask |= AR_IMR_TXOK;
+ if (ah->txdesc_interrupt_mask)
+ mask |= AR_IMR_TXDESC;
+ if (ah->txerr_interrupt_mask)
+ mask |= AR_IMR_TXERR;
+ if (ah->txeol_interrupt_mask)
+ mask |= AR_IMR_TXEOL;
+ }
+ if (ints & ATH9K_INT_RX) {
+ if (AR_SREV_9300_20_OR_LATER(ah)) {
+ mask |= AR_IMR_RXERR | AR_IMR_RXOK_HP;
+ if (ah->config.rx_intr_mitigation) {
+ mask &= ~AR_IMR_RXOK_LP;
+ mask |= AR_IMR_RXMINTR | AR_IMR_RXINTM;
+ } else {
+ mask |= AR_IMR_RXOK_LP;
+ }
+ } else {
+ if (ah->config.rx_intr_mitigation)
+ mask |= AR_IMR_RXMINTR | AR_IMR_RXINTM;
+ else
+ mask |= AR_IMR_RXOK | AR_IMR_RXDESC;
+ }
+ if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
+ mask |= AR_IMR_GENTMR;
+ }
+
+ if (ints & (ATH9K_INT_BMISC)) {
+ mask |= AR_IMR_BCNMISC;
+ if (ints & ATH9K_INT_TIM)
+ mask2 |= AR_IMR_S2_TIM;
+ if (ints & ATH9K_INT_DTIM)
+ mask2 |= AR_IMR_S2_DTIM;
+ if (ints & ATH9K_INT_DTIMSYNC)
+ mask2 |= AR_IMR_S2_DTIMSYNC;
+ if (ints & ATH9K_INT_CABEND)
+ mask2 |= AR_IMR_S2_CABEND;
+ if (ints & ATH9K_INT_TSFOOR)
+ mask2 |= AR_IMR_S2_TSFOOR;
+ }
+
+ if (ints & (ATH9K_INT_GTT | ATH9K_INT_CST)) {
+ mask |= AR_IMR_BCNMISC;
+ if (ints & ATH9K_INT_GTT)
+ mask2 |= AR_IMR_S2_GTT;
+ if (ints & ATH9K_INT_CST)
+ mask2 |= AR_IMR_S2_CST;
+ }
+
+ ath_print(common, ATH_DBG_INTERRUPT, "new IMR 0x%x\n", mask);
+ REG_WRITE(ah, AR_IMR, mask);
+ ah->imrs2_reg &= ~(AR_IMR_S2_TIM | AR_IMR_S2_DTIM | AR_IMR_S2_DTIMSYNC |
+ AR_IMR_S2_CABEND | AR_IMR_S2_CABTO |
+ AR_IMR_S2_TSFOOR | AR_IMR_S2_GTT | AR_IMR_S2_CST);
+ ah->imrs2_reg |= mask2;
+ REG_WRITE(ah, AR_IMR_S2, ah->imrs2_reg);
+
+ if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) {
+ if (ints & ATH9K_INT_TIM_TIMER)
+ REG_SET_BIT(ah, AR_IMR_S5, AR_IMR_S5_TIM_TIMER);
+ else
+ REG_CLR_BIT(ah, AR_IMR_S5, AR_IMR_S5_TIM_TIMER);
+ }
+
+ if (ints & ATH9K_INT_GLOBAL) {
+ ath_print(common, ATH_DBG_INTERRUPT, "enable IER\n");
+ REG_WRITE(ah, AR_IER, AR_IER_ENABLE);
+ if (!AR_SREV_9100(ah)) {
+ REG_WRITE(ah, AR_INTR_ASYNC_ENABLE,
+ AR_INTR_MAC_IRQ);
+ REG_WRITE(ah, AR_INTR_ASYNC_MASK, AR_INTR_MAC_IRQ);
+
+
+ REG_WRITE(ah, AR_INTR_SYNC_ENABLE,
+ AR_INTR_SYNC_DEFAULT);
+ REG_WRITE(ah, AR_INTR_SYNC_MASK,
+ AR_INTR_SYNC_DEFAULT);
+ }
+ ath_print(common, ATH_DBG_INTERRUPT, "AR_IMR 0x%x IER 0x%x\n",
+ REG_READ(ah, AR_IMR), REG_READ(ah, AR_IER));
+ }
+
+ return omask;
+}
+EXPORT_SYMBOL(ath9k_hw_set_interrupts);