1 /*-
2 * SPDX-License-Identifier: ISC
3 *
4 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting
5 * Copyright (c) 2002-2008 Atheros Communications, Inc.
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 */
19 #include "opt_ah.h"
20
21 #include "ah.h"
22 #include "ah_internal.h"
23 #include "ah_devid.h"
24 #ifdef AH_DEBUG
25 #include "ah_desc.h" /* NB: for HAL_PHYERR* */
26 #endif
27
28 #include "ar5212/ar5212.h"
29 #include "ar5212/ar5212reg.h"
30 #include "ar5212/ar5212phy.h"
31
32 /*
33 * Read 16 bits of data from offset into *data
34 */
35 HAL_BOOL
ar5212EepromRead(struct ath_hal * ah,u_int off,uint16_t * data)36 ar5212EepromRead(struct ath_hal *ah, u_int off, uint16_t *data)
37 {
38 OS_REG_WRITE(ah, AR_EEPROM_ADDR, off);
39 OS_REG_WRITE(ah, AR_EEPROM_CMD, AR_EEPROM_CMD_READ);
40
41 if (!ath_hal_wait(ah, AR_EEPROM_STS,
42 AR_EEPROM_STS_READ_COMPLETE | AR_EEPROM_STS_READ_ERROR,
43 AR_EEPROM_STS_READ_COMPLETE)) {
44 HALDEBUG(ah, HAL_DEBUG_ANY, "%s: read failed for entry 0x%x\n",
45 __func__, off);
46 return AH_FALSE;
47 }
48 *data = OS_REG_READ(ah, AR_EEPROM_DATA) & 0xffff;
49 return AH_TRUE;
50 }
51