135 lines
3.7 KiB
C
135 lines
3.7 KiB
C
/*
|
|
* Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
|
|
* Copyright (c) 2002-2004 Atheros Communications, Inc.
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
#include "opt_ah.h"
|
|
|
|
#include "ah.h"
|
|
#include "ah_internal.h"
|
|
|
|
#include "ar5210/ar5210.h"
|
|
#include "ar5210/ar5210reg.h"
|
|
|
|
/*
|
|
* Return non-zero if an interrupt is pending.
|
|
*/
|
|
HAL_BOOL
|
|
ar5210IsInterruptPending(struct ath_hal *ah)
|
|
{
|
|
return (OS_REG_READ(ah, AR_INTPEND) ? AH_TRUE : AH_FALSE);
|
|
}
|
|
|
|
/*
|
|
* Read the Interrupt Status Register value and return
|
|
* an abstracted bitmask of the data found in the ISR.
|
|
* Note that reading the ISR clear pending interrupts.
|
|
*/
|
|
HAL_BOOL
|
|
ar5210GetPendingInterrupts(struct ath_hal *ah, HAL_INT *masked)
|
|
{
|
|
#define AR_FATAL_INT \
|
|
(AR_ISR_MCABT_INT | AR_ISR_SSERR_INT | AR_ISR_DPERR_INT | AR_ISR_RXORN_INT)
|
|
struct ath_hal_5210 *ahp = AH5210(ah);
|
|
uint32_t isr;
|
|
|
|
isr = OS_REG_READ(ah, AR_ISR);
|
|
if (isr == 0xffffffff) {
|
|
*masked = 0;
|
|
return AH_FALSE;
|
|
}
|
|
|
|
/*
|
|
* Mask interrupts that have no device-independent
|
|
* representation; these are added back below. We
|
|
* also masked with the abstracted IMR to insure no
|
|
* status bits leak through that weren't requested
|
|
* (e.g. RXNOFRM) and that might confuse the caller.
|
|
*/
|
|
*masked = (isr & (HAL_INT_COMMON - HAL_INT_BNR)) & ahp->ah_maskReg;
|
|
|
|
if (isr & AR_FATAL_INT)
|
|
*masked |= HAL_INT_FATAL;
|
|
if (isr & (AR_ISR_RXOK_INT | AR_ISR_RXERR_INT))
|
|
*masked |= HAL_INT_RX;
|
|
if (isr & (AR_ISR_TXOK_INT | AR_ISR_TXDESC_INT | AR_ISR_TXERR_INT | AR_ISR_TXEOL_INT))
|
|
*masked |= HAL_INT_TX;
|
|
|
|
/*
|
|
* On fatal errors collect ISR state for debugging.
|
|
*/
|
|
if (*masked & HAL_INT_FATAL) {
|
|
AH_PRIVATE(ah)->ah_fatalState[0] = isr;
|
|
}
|
|
|
|
return AH_TRUE;
|
|
#undef AR_FATAL_INT
|
|
}
|
|
|
|
HAL_INT
|
|
ar5210GetInterrupts(struct ath_hal *ah)
|
|
{
|
|
return AH5210(ah)->ah_maskReg;
|
|
}
|
|
|
|
HAL_INT
|
|
ar5210SetInterrupts(struct ath_hal *ah, HAL_INT ints)
|
|
{
|
|
struct ath_hal_5210 *ahp = AH5210(ah);
|
|
uint32_t omask = ahp->ah_maskReg;
|
|
uint32_t mask;
|
|
|
|
HALDEBUG(ah, HAL_DEBUG_INTERRUPT, "%s: 0x%x => 0x%x\n",
|
|
__func__, omask, ints);
|
|
|
|
/*
|
|
* Disable interrupts here before reading & modifying
|
|
* the mask so that the ISR does not modify the mask
|
|
* out from under us.
|
|
*/
|
|
if (omask & HAL_INT_GLOBAL) {
|
|
HALDEBUG(ah, HAL_DEBUG_INTERRUPT, "%s: disable IER\n", __func__);
|
|
OS_REG_WRITE(ah, AR_IER, AR_IER_DISABLE);
|
|
}
|
|
|
|
mask = ints & (HAL_INT_COMMON - HAL_INT_BNR);
|
|
if (ints & HAL_INT_RX)
|
|
mask |= AR_IMR_RXOK_INT | AR_IMR_RXERR_INT;
|
|
if (ints & HAL_INT_TX) {
|
|
if (ahp->ah_txOkInterruptMask)
|
|
mask |= AR_IMR_TXOK_INT;
|
|
if (ahp->ah_txErrInterruptMask)
|
|
mask |= AR_IMR_TXERR_INT;
|
|
if (ahp->ah_txDescInterruptMask)
|
|
mask |= AR_IMR_TXDESC_INT;
|
|
if (ahp->ah_txEolInterruptMask)
|
|
mask |= AR_IMR_TXEOL_INT;
|
|
}
|
|
|
|
/* Write the new IMR and store off our SW copy. */
|
|
HALDEBUG(ah, HAL_DEBUG_INTERRUPT, "%s: new IMR 0x%x\n", __func__, mask);
|
|
OS_REG_WRITE(ah, AR_IMR, mask);
|
|
ahp->ah_maskReg = ints;
|
|
|
|
/* Re-enable interrupts as appropriate. */
|
|
if (ints & HAL_INT_GLOBAL) {
|
|
HALDEBUG(ah, HAL_DEBUG_INTERRUPT, "%s: enable IER\n", __func__);
|
|
OS_REG_WRITE(ah, AR_IER, AR_IER_ENABLE);
|
|
}
|
|
|
|
return omask;
|
|
}
|