drivers/net/wireless/ath/ath9k/ar9003_mac.c

Source file repositories/reference/linux-study-clean/drivers/net/wireless/ath/ath9k/ar9003_mac.c

File Facts

System
Linux kernel
Corpus path
drivers/net/wireless/ath/ath9k/ar9003_mac.c
Extension
.c
Size
18009 bytes
Lines
636
Domain
Driver Families
Bucket
drivers/net
Inferred role
Driver Families: exported/initcall integration point
Status
integration implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (isr & AR_ISR_BCNMISC) {
			u32 isr2;
			isr2 = REG_READ(ah, AR_ISR_S2);

			mask2 |= ((isr2 & AR_ISR_S2_TIM) >>
				  MAP_ISR_S2_TIM);
			mask2 |= ((isr2 & AR_ISR_S2_DTIM) >>
				  MAP_ISR_S2_DTIM);
			mask2 |= ((isr2 & AR_ISR_S2_DTIMSYNC) >>
				  MAP_ISR_S2_DTIMSYNC);
			mask2 |= ((isr2 & AR_ISR_S2_CABEND) >>
				  MAP_ISR_S2_CABEND);
			mask2 |= ((isr2 & AR_ISR_S2_GTT) <<
				  MAP_ISR_S2_GTT);
			mask2 |= ((isr2 & AR_ISR_S2_CST) <<
				  MAP_ISR_S2_CST);
			mask2 |= ((isr2 & AR_ISR_S2_TSFOOR) >>
				  MAP_ISR_S2_TSFOOR);
			mask2 |= ((isr2 & AR_ISR_S2_BB_WATCHDOG) >>
				  MAP_ISR_S2_BB_WATCHDOG);

			if (!(pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)) {
				REG_WRITE(ah, AR_ISR_S2, isr2);
				isr &= ~AR_ISR_BCNMISC;
			}
		}

		if ((pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED))
			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_RXLP;

		if (ah->config.tx_intr_mitigation)
			if (isr & (AR_ISR_TXMINTR | AR_ISR_TXINTM))
				*masked |= ATH9K_INT_TX;

		if (isr & (AR_ISR_LP_RXOK | AR_ISR_RXERR))
			*masked |= ATH9K_INT_RXLP;

		if (isr & AR_ISR_HP_RXOK)
			*masked |= ATH9K_INT_RXHP;

		if (isr & (AR_ISR_TXOK | AR_ISR_TXERR | AR_ISR_TXEOL)) {
			*masked |= ATH9K_INT_TX;

			if (!(pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)) {
				u32 s0, s1;
				s0 = REG_READ(ah, AR_ISR_S0);
				REG_WRITE(ah, AR_ISR_S0, s0);
				s1 = REG_READ(ah, AR_ISR_S1);
				REG_WRITE(ah, AR_ISR_S1, s1);

				isr &= ~(AR_ISR_TXOK | AR_ISR_TXERR |
					 AR_ISR_TXEOL);
			}
		}

		if (isr & AR_ISR_GENTMR) {
			u32 s5;

			if (pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)
				s5 = REG_READ(ah, AR_ISR_S5_S(ah));
			else
				s5 = REG_READ(ah, AR_ISR_S5);

			ah->intr_gen_timer_trigger =
				MS(s5, AR_ISR_S5_GENTIMER_TRIG);

			ah->intr_gen_timer_thresh =
				MS(s5, AR_ISR_S5_GENTIMER_THRESH);

			if (ah->intr_gen_timer_trigger)
				*masked |= ATH9K_INT_GENTIMER;

			if (!(pCap->hw_caps & ATH9K_HW_CAP_RAC_SUPPORTED)) {
				REG_WRITE(ah, AR_ISR_S5, s5);
				isr &= ~AR_ISR_GENTMR;
			}

		}

Annotation

Implementation Notes