71 lines
2.2 KiB
C
71 lines
2.2 KiB
C
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/*
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* Copyright (c) 2008 Travis Geiselbrecht
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <sys/types.h>
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#include <debug.h>
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#include <printf.h>
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#include <dev/net/smc91c96.h>
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#include "smc91c96_p.h"
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#if !defined(SMC91C96_BASE_ADDR) || !defined(SMC91C96_IRQ)
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#error need to define SMC91C96_BASE_ADDR and SMC91C96_IRQ in project
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#endif
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static addr_t smc91c96_base = SMC91C96_BASE_ADDR;
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static uint8_t mac_addr[6];
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#define SMC_REG16(reg) ((volatile uint16_t *)(smc91c96_base + (reg)))
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#define SMC_REG8(reg) ((volatile uint8_t *)(smc91c96_base + (reg)))
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static inline void smc_bank(int bank)
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{
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*SMC_REG16(SMC_BSR) = bank;
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}
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void smc91c96_init(void)
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{
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int i;
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TRACE;
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// try to detect it
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if ((*SMC_REG16(SMC_BSR) & 0xff00) != 0x3300) {
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TRACEF("didn't see smc91c96 chip at 0x%x\n", (unsigned int)smc91c96_base);
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}
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// read revision
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smc_bank(3);
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TRACEF("detected, revision 0x%x\n", *SMC_REG16(SMC_REV));
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// read in the mac address
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smc_bank(1);
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for (i=0; i < 6; i++) {
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mac_addr[i] = *SMC_REG8(SMC_IAR0 + i);
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}
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TRACEF("mac address %02x:%02x:%02x:%02x:%02x:%02x\n",
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mac_addr[0], mac_addr[1], mac_addr[2],
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mac_addr[3], mac_addr[4], mac_addr[5]);
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smc_bank(0);
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}
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