freebsd-skq/sys/dev/ath/ath_hal/ar9001/ar9130_eeprom.c

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Introduce AR9130 (HOWL) WMAC support to the FreeBSD HAL. The AR9130 is an AR9160/AR5416 family WMAC which is glued directly to the AR913x SoC peripheral bus (APB) rather than via a PCI/PCIe bridge. The specifics: * A new build option is required to use the AR9130 - AH_SUPPORT_AR9130. This is needed due to the different location the RTC registers live with this chip; hopefully this will be undone in the future. This does currently mean that enabling this option will break non-AR9130 builds, so don't enable it unless you're specifically building an image for the AR913x SoC. * Add the new probe, attach, EEPROM and PLL methods specific to Howl. * Add a work-around to ah_eeprom_v14.c which disables some of the checks for endian-ness and magic in the EEPROM image if an eepromdata block is provided. This'll be fixed at a later stage by porting the ath9k probe code and making sure it doesn't break in other setups (which my previous attempt at this did.) * Sprinkle Howl modifications throughput the interrupt path - it doesn't implement the SYNC interrupt registers, so ignore those. * Sprinkle Howl chip powerup/down throughout the reset path; the RTC methods were * Sprinkle some other Howl workarounds in the reset path. * Hard-code an alternative setup for the AR_CFG register for Howl, that sets up things suitable for Big-Endian MIPS (which is the only platform this chip is glued to.) This has been tested on the AR913x based TP-Link WR-1043nd mode, in legacy, HT/20 and HT/40 modes. Caveats: * 2ghz has only been tested. I've not seen any 5ghz radios glued to this chipset so I can't test it. * AR5416_INTERRUPT_MITIGATION is not supported on the AR9130. At least, it isn't implemented in ath9k. Please don't enable this. * This hasn't been tested in MBSS mode or in RX/TX block-aggregation mode.
2011-04-28 12:47:40 +00:00
/*
* Copyright (c) 2011 Adrian Chadd, Xenion Pty Ltd
* Copyright (c) 2010 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 "ar9001/ar9130_eeprom.h"
/* XXX this shouldn't be done here */
/* This is in 16 bit words; not bytes -adrian */
#define ATH_DATA_EEPROM_SIZE 2048
HAL_BOOL
ar9130EepromRead(struct ath_hal *ah, u_int off, uint16_t *data)
{
if (ah->ah_eepromdata == AH_NULL) {
HALDEBUG(ah, HAL_DEBUG_ANY, "%s: no eeprom data!\n", __func__);
return AH_FALSE;
}
if (off > ATH_DATA_EEPROM_SIZE) {
HALDEBUG(ah, HAL_DEBUG_ANY, "ar9130EepromRead: offset %x > %x\n", off, ATH_DATA_EEPROM_SIZE);
return AH_FALSE;
}
(*data) = ah->ah_eepromdata[off];
return AH_TRUE;
}