| /* |
| ************************************************************************* |
| * Ralink Tech Inc. |
| * 5F., No.36, Taiyuan St., Jhubei City, |
| * Hsinchu County 302, |
| * Taiwan, R.O.C. |
| * |
| * (c) Copyright 2002-2007, Ralink Technology, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify * |
| * it under the terms of the GNU General Public License as published by * |
| * the Free Software Foundation; either version 2 of the License, or * |
| * (at your option) any later version. * |
| * * |
| * This program is distributed in the hope that it will be useful, * |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of * |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * |
| * GNU General Public License for more details. * |
| * * |
| * You should have received a copy of the GNU General Public License * |
| * along with this program; if not, write to the * |
| * Free Software Foundation, Inc., * |
| * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * |
| * * |
| ************************************************************************* |
| |
| Module Name: |
| ee_prom.c |
| |
| Abstract: |
| Miniport generic portion header file |
| |
| Revision History: |
| Who When What |
| -------- ---------- ---------------------------------------------- |
| */ |
| |
| #include "../rt_config.h" |
| |
| /* IRQL = PASSIVE_LEVEL */ |
| static inline void RaiseClock(struct rt_rtmp_adapter *pAd, u32 * x) |
| { |
| *x = *x | EESK; |
| RTMP_IO_WRITE32(pAd, E2PROM_CSR, *x); |
| RTMPusecDelay(1); /* Max frequency = 1MHz in Spec. definition */ |
| } |
| |
| /* IRQL = PASSIVE_LEVEL */ |
| static inline void LowerClock(struct rt_rtmp_adapter *pAd, u32 * x) |
| { |
| *x = *x & ~EESK; |
| RTMP_IO_WRITE32(pAd, E2PROM_CSR, *x); |
| RTMPusecDelay(1); |
| } |
| |
| /* IRQL = PASSIVE_LEVEL */ |
| static inline u16 ShiftInBits(struct rt_rtmp_adapter *pAd) |
| { |
| u32 x, i; |
| u16 data = 0; |
| |
| RTMP_IO_READ32(pAd, E2PROM_CSR, &x); |
| |
| x &= ~(EEDO | EEDI); |
| |
| for (i = 0; i < 16; i++) { |
| data = data << 1; |
| RaiseClock(pAd, &x); |
| |
| RTMP_IO_READ32(pAd, E2PROM_CSR, &x); |
| LowerClock(pAd, &x); /*prevent read failed */ |
| |
| x &= ~(EEDI); |
| if (x & EEDO) |
| data |= 1; |
| } |
| |
| return data; |
| } |
| |
| /* IRQL = PASSIVE_LEVEL */ |
| static inline void ShiftOutBits(struct rt_rtmp_adapter *pAd, |
| u16 data, u16 count) |
| { |
| u32 x, mask; |
| |
| mask = 0x01 << (count - 1); |
| RTMP_IO_READ32(pAd, E2PROM_CSR, &x); |
| |
| x &= ~(EEDO | EEDI); |
| |
| do { |
| x &= ~EEDI; |
| if (data & mask) |
| x |= EEDI; |
| |
| RTMP_IO_WRITE32(pAd, E2PROM_CSR, x); |
| |
| RaiseClock(pAd, &x); |
| LowerClock(pAd, &x); |
| |
| mask = mask >> 1; |
| } while (mask); |
| |
| x &= ~EEDI; |
| RTMP_IO_WRITE32(pAd, E2PROM_CSR, x); |
| } |
| |
| /* IRQL = PASSIVE_LEVEL */ |
| static inline void EEpromCleanup(struct rt_rtmp_adapter *pAd) |
| { |
| u32 x; |
| |
| RTMP_IO_READ32(pAd, E2PROM_CSR, &x); |
| |
| x &= ~(EECS | EEDI); |
| RTMP_IO_WRITE32(pAd, E2PROM_CSR, x); |
| |
| RaiseClock(pAd, &x); |
| LowerClock(pAd, &x); |
| } |
| |
| static inline void EWEN(struct rt_rtmp_adapter *pAd) |
| { |
| u32 x; |
| |
| /* reset bits and set EECS */ |
| RTMP_IO_READ32(pAd, E2PROM_CSR, &x); |
| x &= ~(EEDI | EEDO | EESK); |
| x |= EECS; |
| RTMP_IO_WRITE32(pAd, E2PROM_CSR, x); |
| |
| /* kick a pulse */ |
| RaiseClock(pAd, &x); |
| LowerClock(pAd, &x); |
| |
| /* output the read_opcode and six pulse in that order */ |
| ShiftOutBits(pAd, EEPROM_EWEN_OPCODE, 5); |
| ShiftOutBits(pAd, 0, 6); |
| |
| EEpromCleanup(pAd); |
| } |
| |
| static inline void EWDS(struct rt_rtmp_adapter *pAd) |
| { |
| u32 x; |
| |
| /* reset bits and set EECS */ |
| RTMP_IO_READ32(pAd, E2PROM_CSR, &x); |
| x &= ~(EEDI | EEDO | EESK); |
| x |= EECS; |
| RTMP_IO_WRITE32(pAd, E2PROM_CSR, x); |
| |
| /* kick a pulse */ |
| RaiseClock(pAd, &x); |
| LowerClock(pAd, &x); |
| |
| /* output the read_opcode and six pulse in that order */ |
| ShiftOutBits(pAd, EEPROM_EWDS_OPCODE, 5); |
| ShiftOutBits(pAd, 0, 6); |
| |
| EEpromCleanup(pAd); |
| } |
| |
| /* IRQL = PASSIVE_LEVEL */ |
| int rtmp_ee_prom_read16(struct rt_rtmp_adapter *pAd, |
| u16 Offset, u16 * pValue) |
| { |
| u32 x; |
| u16 data; |
| |
| Offset /= 2; |
| /* reset bits and set EECS */ |
| RTMP_IO_READ32(pAd, E2PROM_CSR, &x); |
| x &= ~(EEDI | EEDO | EESK); |
| x |= EECS; |
| RTMP_IO_WRITE32(pAd, E2PROM_CSR, x); |
| |
| /* patch can not access e-Fuse issue */ |
| if (!(IS_RT3090(pAd) || IS_RT3572(pAd) || IS_RT3390(pAd))) { |
| /* kick a pulse */ |
| RaiseClock(pAd, &x); |
| LowerClock(pAd, &x); |
| } |
| /* output the read_opcode and register number in that order */ |
| ShiftOutBits(pAd, EEPROM_READ_OPCODE, 3); |
| ShiftOutBits(pAd, Offset, pAd->EEPROMAddressNum); |
| |
| /* Now read the data (16 bits) in from the selected EEPROM word */ |
| data = ShiftInBits(pAd); |
| |
| EEpromCleanup(pAd); |
| |
| *pValue = data; |
| |
| return NDIS_STATUS_SUCCESS; |
| } |