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Diffstat (limited to 'drivers/net/ax88796.h')
| -rw-r--r-- | drivers/net/ax88796.h | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/drivers/net/ax88796.h b/drivers/net/ax88796.h new file mode 100644 index 0000000..069ae80 --- /dev/null +++ b/drivers/net/ax88796.h @@ -0,0 +1,217 @@ +/* + * AX88796L(NE2000) support + * + * (c) 2007 Nobuhiro Iwamatsu <iwamatsu@nigauri.org> + * + * 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 + * + */ + +#ifndef __DRIVERS_AX88796L_H__ +#define __DRIVERS_AX88796L_H__ + +#define DP_DATA (0x10 << 1) +#define START_PG 0x40 /* First page of TX buffer */ +#define START_PG2 0x48 +#define STOP_PG 0x80 /* Last page +1 of RX ring */ +#define TX_PAGES 12 +#define RX_START (START_PG+TX_PAGES) +#define RX_END STOP_PG + +#define AX88796L_BASE_ADDRESS CONFIG_DRIVER_NE2000_BASE +#define AX88796L_BYTE_ACCESS 0x00001000 +#define AX88796L_OFFSET 0x00000400 +#define AX88796L_ADDRESS_BYTE AX88796L_BASE_ADDRESS + \ + AX88796L_BYTE_ACCESS + AX88796L_OFFSET +#define AX88796L_REG_MEMR AX88796L_ADDRESS_BYTE + (0x14<<1) +#define AX88796L_REG_CR AX88796L_ADDRESS_BYTE + (0x00<<1) + +#define AX88796L_CR (*(vu_short *)(AX88796L_REG_CR)) +#define AX88796L_MEMR (*(vu_short *)(AX88796L_REG_MEMR)) + +#define EECS_HIGH (AX88796L_MEMR |= 0x10) +#define EECS_LOW (AX88796L_MEMR &= 0xef) +#define EECLK_HIGH (AX88796L_MEMR |= 0x80) +#define EECLK_LOW (AX88796L_MEMR &= 0x7f) +#define EEDI_HIGH (AX88796L_MEMR |= 0x20) +#define EEDI_LOW (AX88796L_MEMR &= 0xdf) +#define EEDO ((AX88796L_MEMR & 0x40)>>6) + +#define PAGE0_SET (AX88796L_CR &= 0x3f) +#define PAGE1_SET (AX88796L_CR = (AX88796L_CR & 0x3f) | 0x40) + +#define BIT_DUMMY 0 +#define MAC_EEP_READ 1 +#define MAC_EEP_WRITE 2 +#define MAC_EEP_ERACE 3 +#define MAC_EEP_EWEN 4 +#define MAC_EEP_EWDS 5 + +/* R7780MP Specific code */ +#if defined(CONFIG_R7780MP) +#define ISA_OFFSET 0x1400 +#define DP_IN(_b_, _o_, _d_) (_d_) = \ + *( (vu_short *) ((_b_) + ((_o_) * 2) + ISA_OFFSET)) +#define DP_OUT(_b_, _o_, _d_) \ + *((vu_short *)((_b_) + ((_o_) * 2) + ISA_OFFSET)) = (_d_) +#define DP_IN_DATA(_b_, _d_) (_d_) = *( (vu_short *) ((_b_) + ISA_OFFSET)) +#define DP_OUT_DATA(_b_, _d_) *( (vu_short *) ((_b_)+ISA_OFFSET)) = (_d_) +#else +/* Please change for your target boards */ +#define ISA_OFFSET 0x0000 +#define DP_IN(_b_, _o_, _d_) (_d_) = *( (vu_short *)((_b_)+(_o_ )+ISA_OFFSET)) +#define DP_OUT(_b_, _o_, _d_) *((vu_short *)((_b_)+(_o_)+ISA_OFFSET)) = (_d_) +#define DP_IN_DATA(_b_, _d_) (_d_) = *( (vu_short *) ((_b_)+ISA_OFFSET)) +#define DP_OUT_DATA(_b_, _d_) *( (vu_short *) ((_b_)+ISA_OFFSET)) = (_d_) +#endif + + +/* + * Set 1 bit data + */ +static void ax88796_bitset(u32 bit) +{ + /* DATA1 */ + if( bit ) + EEDI_HIGH; + else + EEDI_LOW; + + EECLK_LOW; + udelay(1000); + EECLK_HIGH; + udelay(1000); + EEDI_LOW; +} + +/* + * Get 1 bit data + */ +static u8 ax88796_bitget(void) +{ + u8 bit; + + EECLK_LOW; + udelay(1000); + /* DATA */ + bit = EEDO; + EECLK_HIGH; + udelay(1000); + + return bit; +} + +/* + * Send COMMAND to EEPROM + */ +static void ax88796_eep_cmd(u8 cmd) +{ + ax88796_bitset(BIT_DUMMY); + switch(cmd){ + case MAC_EEP_READ: + ax88796_bitset(1); + ax88796_bitset(1); + ax88796_bitset(0); + break; + + case MAC_EEP_WRITE: + ax88796_bitset(1); + ax88796_bitset(0); + ax88796_bitset(1); + break; + + case MAC_EEP_ERACE: + ax88796_bitset(1); + ax88796_bitset(1); + ax88796_bitset(1); + break; + + case MAC_EEP_EWEN: + ax88796_bitset(1); + ax88796_bitset(0); + ax88796_bitset(0); + break; + + case MAC_EEP_EWDS: + ax88796_bitset(1); + ax88796_bitset(0); + ax88796_bitset(0); + break; + default: + break; + } +} + +static void ax88796_eep_setaddr(u16 addr) +{ + int i ; + for( i = 7 ; i >= 0 ; i-- ) + ax88796_bitset(addr & (1 << i)); +} + +/* + * Get data from EEPROM + */ +static u16 ax88796_eep_getdata(void) +{ + ushort data = 0; + int i; + + ax88796_bitget(); /* DUMMY */ + for( i = 0 ; i < 16 ; i++ ){ + data <<= 1; + data |= ax88796_bitget(); + } + return data; +} + +static void ax88796_mac_read(u8 *buff) +{ + int i ; + u16 data, addr = 0; + + for( i = 0 ; i < 3; i++ ) + { + EECS_HIGH; + EEDI_LOW; + udelay(1000); + /* READ COMMAND */ + ax88796_eep_cmd(MAC_EEP_READ); + /* ADDRESS */ + ax88796_eep_setaddr(addr++); + /* GET DATA */ + data = ax88796_eep_getdata(); + *buff++ = (uchar)(data & 0xff); + *buff++ = (uchar)((data >> 8) & 0xff); + EECLK_LOW; + EEDI_LOW; + EECS_LOW; + } +} + +int get_prom(u8* mac_addr) +{ + u8 prom[32]; + int i; + + ax88796_mac_read(prom); + for (i = 0; i < 6; i++){ + mac_addr[i] = prom[i]; + } + return 1; +} + +#endif /* __DRIVERS_AX88796L_H__ */ |