/***************************************************************************** * SALTO - Xerox Alto I/II Simulator. * * Copyright (C) 2007 by Juergen Buchmueller * Partially based on info found in Eric Smith's Alto simulator: Altogether * * 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 * * Bus source and F1 handling for Ethernet task * * $Id: ether.h,v 1.1.1.1 2008/07/22 19:02:06 pm Exp $ *****************************************************************************/ #if !defined(_ETHER_H_INCLUDED_) #define _ETHER_H_INCLUDED_ #include "alto.h" #include "cpu.h" /** @brief bs task specific: Ethernet input data */ #define bs_ether_eidfct bs_task_4 /** @brief f1 task specific: Ethernet input look function */ #define f1_ether_eilfct f1_task_13 /** @brief f1 task specific: Ethernet post function */ #define f1_ether_epfct f1_task_14 /** @brief f1 task specific: Ethernet countdown wakeup function */ #define f1_ether_ewfct f1_task_15 /** @brief f2 task specific: Ethernet output data function */ #define f2_ether_eodfct f2_task_10 /** @brief f2 task specific: Ethernet output start function */ #define f2_ether_eosfct f2_task_11 /** @brief f2 task specific: Ethernet reset branch function */ #define f2_ether_erbfct f2_task_12 /** @brief f2 task specific: Ethernet end of transmission function */ #define f2_ether_eefct f2_task_13 /** @brief f2 task specific: Ethernet branch function */ #define f2_ether_ebfct f2_task_14 /** @brief f2 task specific: Ethernet countdown branch function */ #define f2_ether_ecbfct f2_task_15 /** @brief f2 task specific: Ethernet input start function */ #define f2_ether_eisfct f2_task_16 /** @brief hardware status: write latch full (WLF) */ #define GET_ETH_WLF(st) ALTO_BIT(st,16,4) #define PUT_ETH_WLF(st,val) ALTO_PUT(st,16,4,4,val) /** @brief hardware status: ouput end of transmission (OEOT) */ #define GET_ETH_OEOT(st) ALTO_BIT(st,16,5) #define PUT_ETH_OEOT(st,val) ALTO_PUT(st,16,5,5,val) /** @brief hardware status: input gone */ #define GET_ETH_IGONE(st) ALTO_BIT(st,16,6) #define PUT_ETH_IGONE(st,val) ALTO_PUT(st,16,6,6,val) /** @brief hardware status: output gone */ #define GET_ETH_OGONE(st) ALTO_BIT(st,16,7) #define PUT_ETH_OGONE(st,val) ALTO_PUT(st,16,7,7,val) /** @brief hardware status: input busy (set by EISFCT, bit isn't visible to microcode) */ #define GET_ETH_IBUSY(st) ALTO_BIT(st,16,8) #define PUT_ETH_IBUSY(st,val) ALTO_PUT(st,16,8,8,val) /** @brief hardware status: output busy (set by EOSFCT, bit isn't visible to microcode) */ #define GET_ETH_OBUSY(st) ALTO_BIT(st,16,9) #define PUT_ETH_OBUSY(st,val) ALTO_PUT(st,16,9,9,val) /** @brief hardware status: input data late */ #define GET_ETH_IDL(st) ALTO_BIT(st,16,10) #define PUT_ETH_IDL(st,val) ALTO_PUT(st,16,10,10,val) /** @brief hardware status: collision */ #define GET_ETH_COLL(st) ALTO_BIT(st,16,11) #define PUT_ETH_COLL(st,val) ALTO_PUT(st,16,11,11,val) /** @brief hardware status: CRC error */ #define GET_ETH_CRC(st) ALTO_BIT(st,16,12) #define PUT_ETH_CRC(st,val) ALTO_PUT(st,16,12,12,val) /** @brief hardware status: input command (set from BUS[14] on SIO, reset by EPFCT) */ #define GET_ETH_ICMD(st) ALTO_BIT(st,16,13) #define PUT_ETH_ICMD(st,val) ALTO_PUT(st,16,13,13,val) /** @brief hardware status: output command (set from BUS[15] on SIO, reset by EPFCT) */ #define GET_ETH_OCMD(st) ALTO_BIT(st,16,14) #define PUT_ETH_OCMD(st,val) ALTO_PUT(st,16,14,14,val) /** @brief hardware status: IT flip flop & ISRFULL' */ #define GET_ETH_IT(st) ALTO_GET(st,16,15,15) #define PUT_ETH_IT(st,val) ALTO_PUT(st,16,15,15,val) /** @brief size of the FIFO */ #define ETHER_FIFO_SIZE 16 typedef struct { /** @brief FIFO buffer */ int fifo[ETHER_FIFO_SIZE]; /** @brief FIFO input pointer */ int fifo_rd; /** @brief FIFO output pointer */ int fifo_wr; /** @brief status word */ int status; /** @brief receiver CRC */ uint32_t rx_crc; /** @brief transmitter CRC */ uint32_t tx_crc; /** @brief received words count */ size_t rx_count; /** @brief transmitted words count */ size_t tx_count; /** @brief if non-zero, interval in seconds at which to broadcast the duckbreath */ int duckbreath; } ethernet_t; /** @brief the ethernet context */ extern ethernet_t eth; /** @brief missing PROM ether.u41; "PE1" phase encoder 1 */ extern uint8_t ether_a41[256]; /** @brief missing PROM ether.u42; "PE2" phase encoder 2 */ extern uint8_t ether_a42[256]; /** @brief missing PROM ether.u49; "AFIFO" FIFO control */ extern uint8_t ether_a49[256]; /** @brief ethernet node id */ extern uint8_t ether_id; /** @brief missing PROM ether.u49; buffer empty (active low) */ #define ETHER_A49_BE ALTO_BIT(ether_a49[(eth.fifo_wr<<4)|eth.fifo_rd],4,3) /** @brief missing PROM ether.u49; buffer next(?) empty (active low) */ #define ETHER_A49_BNE ALTO_BIT(ether_a49[(eth.fifo_wr<<4)|eth.fifo_rd],4,2) /** @brief missing PROM ether.u49; buffer next next(?) empty (active low) */ #define ETHER_A49_BNNE ALTO_BIT(ether_a49[(eth.fifo_wr<<4)|eth.fifo_rd],4,1) /** @brief missing PROM ether.u49; buffer full (active low) */ #define ETHER_A49_BF ALTO_BIT(ether_a49[(eth.fifo_wr<<4)|eth.fifo_rd],4,0) /** @brief pass command line switches down to the Ethernet code */ extern int ether_args(const char *arg); /** @brief print usage info for the Ethernet switches */ extern int ether_usage(int argc, char **argv); /** @brief initialize ethernet task */ extern int init_ether(int task); #endif /* !defined(_ETHER_H_INCLUDED_) */