652 lines
18 KiB
C
652 lines
18 KiB
C
#include <assert.h>
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/*
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** File: dp.c Version 1.01, Oct. 17, 2007
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** Original: eth.c Version 1.00, Jan. 14, 1997
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**
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** Author: Giovanni Falzoni <gfalzoni@inwind.it>
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**
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** This file contains the ethernet device driver main task.
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** It has to be integrated with the board specific drivers.
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** It is a rewriting of Minix 2.0.0 ethernet driver (dp8390.c)
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** to remove bord specific code. It should operate (I hope)
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** with any board driver.
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**
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** The valid messages and their parameters are:
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**
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** m_type DL_PORT DL_PROC DL_COUNT DL_MODE DL_ADDR
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** +------------+---------+---------+--------+-------+---------+
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** | HARD_INT | | | | | |
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** +------------+---------+---------+--------+-------+---------+
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** | SYN_ALARM | | | | | |
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** +------------+---------+---------+--------+-------+---------+
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** | HARD_STOP | | | | | |
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** +------------+---------+---------+--------+-------+---------+
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** | FKEY_PRESSED | | | | | (99)
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** +------------+---------+---------+--------+-------+---------+
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** | DL_WRITE | port nr | proc nr | count | mode | address | (3)
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** +------------+---------+---------+--------+-------+---------+
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** | DL_WRITEV | port nr | proc nr | count | mode | address | (4)
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** +------------+---------+---------+--------+-------+---------+
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** | DL_READ | port nr | proc nr | count | | address | (5)
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** +------------+---------+---------+--------+-------+---------+
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** | DL_READV | port nr | proc nr | count | | address | (6)
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** +------------+---------+---------+--------+-------+---------+
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** | DL_CONF | port nr | proc nr | | mode | address | (7)
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** +------------+---------+---------+--------+-------+---------+
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** | DL_STOP | port_nr | | | | | (8)
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** +------------+---------+---------+--------+-------+---------+
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** | DL_GETSTAT | port nr | proc nr | | | address | (9)
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** +------------+---------+---------+--------+-------+---------+
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**
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** The messages sent are:
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**
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** m-type DL_PORT DL_PROC DL_COUNT DL_STAT DL_CLCK
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** +------------+---------+---------+--------+---------+---------+
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** |DL_TASK_REPL| port nr | proc nr |rd-count| err|stat| clock | (21)
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** +------------+---------+---------+--------+---------+---------+
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**
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** m_type m3_i1 m3_i2 m3_ca1
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** +------------+---------+---------+---------------+
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** |DL_CONF_REPL| port nr |last port| ethernet addr | (20)
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** +------------+---------+---------+---------------+
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**
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** $Id$
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**
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** 2007-10-17: modified by jfdsmit@gmail.com
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** added a third argument to the reply() function because not
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** every reply should be of DL_TASK_REPLY (one should be
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** DL_STAT_REPLY)
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*/
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#include "drivers.h"
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#include <minix/keymap.h>
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#include <net/hton.h>
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#include <net/gen/ether.h>
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#include <net/gen/eth_io.h>
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#include "dp.h"
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/*
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** Local data
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*/
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extern int errno;
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static dpeth_t de_table[DE_PORT_NR];
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static char *progname;
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typedef struct dp_conf { /* Configuration description structure */
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port_t dpc_port;
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int dpc_irq;
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phys_bytes dpc_mem;
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char *dpc_envvar;
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} dp_conf_t;
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/* Device default configuration */
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static dp_conf_t dp_conf[DE_PORT_NR] = {
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/* I/O port, IRQ, Buff addr, Env. var, Buf. selector */
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{ 0x300, 5, 0xC8000, "DPETH0", },
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{ 0x280, 10, 0xCC000, "DPETH1", },
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};
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static char CopyErrMsg[] = "unable to read/write user data";
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static char PortErrMsg[] = "illegal port";
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static char RecvErrMsg[] = "receive failed";
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static char SendErrMsg[] = "send failed";
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static char SizeErrMsg[] = "illegal packet size";
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static char TypeErrMsg[] = "illegal message type";
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static char DevName[] = "eth#?";
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static void do_getname(message *mp);
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/*
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** Name: void reply(dpeth_t *dep, int err, int m_type)
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** Function: Fills a reply message and sends it.
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*/
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static void reply(dpeth_t * dep, int err, int m_type)
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{
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message reply;
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int status = FALSE;
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if (dep->de_flags & DEF_ACK_SEND) status |= DL_PACK_SEND;
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if (dep->de_flags & DEF_ACK_RECV) status |= DL_PACK_RECV;
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reply.m_type = m_type;
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reply.DL_PORT = dep - de_table;
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reply.DL_PROC = dep->de_client;
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reply.DL_STAT = status /* | ((u32_t) err << 16) */;
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reply.DL_COUNT = dep->de_read_s;
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getuptime(&reply.DL_CLCK);
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DEBUG(printf("\t reply %d (%ld)\n", reply.m_type, reply.DL_STAT));
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if ((status = send(dep->de_client, &reply)) == OK) {
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dep->de_read_s = 0;
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dep->de_flags &= NOT(DEF_ACK_SEND | DEF_ACK_RECV);
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} else if (status != ELOCKED || err == OK)
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panic(dep->de_name, SendErrMsg, status);
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return;
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}
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/*
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** Name: void dp_confaddr(dpeth_t *dep)
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** Function: Checks environment for a User defined ethernet address.
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*/
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static void dp_confaddr(dpeth_t * dep)
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{
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static char ea_fmt[] = "x:x:x:x:x:x";
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char ea_key[16];
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int ix;
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long val;
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strcpy(ea_key, dp_conf[dep - de_table].dpc_envvar);
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strcat(ea_key, "_EA");
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for (ix = 0; ix < SA_ADDR_LEN; ix++) {
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val = dep->de_address.ea_addr[ix];
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if (env_parse(ea_key, ea_fmt, ix, &val, 0x00L, 0xFFL) != EP_SET)
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break;
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dep->de_address.ea_addr[ix] = val;
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}
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if (ix != 0 && ix != SA_ADDR_LEN)
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/* It's all or nothing, force a panic */
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env_parse(ea_key, "?", 0, &val, 0L, 0L);
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return;
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}
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/*
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** Name: void update_conf(dpeth_t *dep, dp_conf_t *dcp)
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** Function: Gets the default settings from 'dp_conf' table and
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** modifies them from the environment.
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*/
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static void update_conf(dpeth_t * dep, dp_conf_t * dcp)
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{
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static char dpc_fmt[] = "x:d:x";
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long val;
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dep->de_mode = DEM_SINK;
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val = dcp->dpc_port; /* Get I/O port address */
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switch (env_parse(dcp->dpc_envvar, dpc_fmt, 0, &val, 0x000L, 0x3FFL)) {
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case EP_OFF: dep->de_mode = DEM_DISABLED; break;
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case EP_ON:
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case EP_SET: dep->de_mode = DEM_ENABLED; break;
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}
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dep->de_base_port = val;
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val = dcp->dpc_irq | DEI_DEFAULT; /* Get Interrupt line (IRQ) */
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env_parse(dcp->dpc_envvar, dpc_fmt, 1, &val, 0L, (long) NR_IRQ_VECTORS - 1);
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dep->de_irq = val;
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val = dcp->dpc_mem; /* Get shared memory address */
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env_parse(dcp->dpc_envvar, dpc_fmt, 2, &val, 0L, LONG_MAX);
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dep->de_linmem = val;
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return;
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}
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/*
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** Name: void do_dump(message *mp)
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** Function: Displays statistics on screen (SFx key from console)
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*/
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static void do_dump(message *mp)
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{
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dpeth_t *dep;
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int port;
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printf("\n\n");
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for (port = 0, dep = de_table; port < DE_PORT_NR; port += 1, dep += 1) {
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if (dep->de_mode == DEM_DISABLED) continue;
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printf("%s statistics:\t\t", dep->de_name);
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/* Network interface status */
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printf("Status: 0x%04x (%d)\n\n", dep->de_flags, dep->de_int_pending);
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(*dep->de_dumpstatsf) (dep);
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/* Transmitted/received bytes */
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printf("Tx bytes:%10ld\t", dep->bytes_Tx);
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printf("Rx bytes:%10ld\n", dep->bytes_Rx);
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/* Transmitted/received packets */
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printf("Tx OK: %8ld\t", dep->de_stat.ets_packetT);
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printf("Rx OK: %8ld\n", dep->de_stat.ets_packetR);
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/* Transmit/receive errors */
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printf("Tx Err: %8ld\t", dep->de_stat.ets_sendErr);
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printf("Rx Err: %8ld\n", dep->de_stat.ets_recvErr);
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/* Transmit unnerruns/receive overrruns */
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printf("Tx Und: %8ld\t", dep->de_stat.ets_fifoUnder);
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printf("Rx Ovr: %8ld\n", dep->de_stat.ets_fifoOver);
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/* Transmit collisions/receive CRC errors */
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printf("Tx Coll: %8ld\t", dep->de_stat.ets_collision);
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printf("Rx CRC: %8ld\n", dep->de_stat.ets_CRCerr);
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}
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return;
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}
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/*
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** Name: void get_userdata_s(int user_proc, vir_bytes user_addr, int count, void *loc_addr)
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** Function: Copies data from user area.
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*/
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static void get_userdata_s(int user_proc, cp_grant_id_t grant,
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vir_bytes offset, int count, void *loc_addr)
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{
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int rc;
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vir_bytes len;
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len = (count > IOVEC_NR ? IOVEC_NR : count) * sizeof(iovec_t);
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if ((rc = sys_safecopyfrom(user_proc, grant, 0, (vir_bytes)loc_addr, len, D)) != OK)
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panic(DevName, CopyErrMsg, rc);
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return;
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}
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/*
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** Name: void do_first_init(dpeth_t *dep, dp_conf_t *dcp);
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** Function: Init action to setup task
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*/
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static void do_first_init(dpeth_t *dep, dp_conf_t *dcp)
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{
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if (dep->de_linmem != 0) {
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dep->de_memsegm = BIOS_SEG;
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/* phys2seg(&dep->de_memsegm, &dep->de_memoffs, dep->de_linmem); */
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} else
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dep->de_linmem = 0xFFFF0000;
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/* Make sure statisics are cleared */
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memset((void *) &(dep->de_stat), 0, sizeof(eth_stat_t));
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/* Device specific initialization */
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(*dep->de_initf) (dep);
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/* Set the interrupt handler policy. Request interrupts not to be reenabled
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* automatically. Return the IRQ line number when an interrupt occurs.
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*/
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dep->de_hook = dep->de_irq;
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sys_irqsetpolicy(dep->de_irq, 0 /*IRQ_REENABLE*/, &dep->de_hook);
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dep->de_int_pending = FALSE;
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sys_irqenable(&dep->de_hook);
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return;
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}
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/*
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** Name: void do_init(message *mp)
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** Function: Checks for hardware presence.
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** Provides initialization of hardware and data structures
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*/
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static void do_init(message * mp)
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{
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int port;
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dpeth_t *dep;
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dp_conf_t *dcp;
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message reply_mess;
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port = mp->DL_PORT;
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if (port >= 0 && port < DE_PORT_NR) {
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dep = &de_table[port];
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dcp = &dp_conf[port];
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strcpy(dep->de_name, DevName);
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dep->de_name[4] = '0' + port;
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if (dep->de_mode == DEM_DISABLED) {
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update_conf(dep, dcp); /* First time thru */
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if (dep->de_mode == DEM_ENABLED &&
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!el1_probe(dep) && /* Probe for 3c501 */
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!wdeth_probe(dep) && /* Probe for WD80x3 */
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!ne_probe(dep) && /* Probe for NEx000 */
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!el2_probe(dep) && /* Probe for 3c503 */
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!el3_probe(dep)) { /* Probe for 3c509 */
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printf("%s: warning no ethernet card found at 0x%04X\n",
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dep->de_name, dep->de_base_port);
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dep->de_mode = DEM_DISABLED;
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}
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}
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/* 'de_mode' may change if probe routines fail, test again */
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switch (dep->de_mode) {
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case DEM_DISABLED:
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/* Device is configured OFF or hardware probe failed */
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port = ENXIO;
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break;
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case DEM_ENABLED:
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/* Device is present and probed */
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if (dep->de_flags == DEF_EMPTY) {
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/* These actions only the first time */
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do_first_init(dep, dcp);
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dep->de_flags |= DEF_ENABLED;
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}
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dep->de_flags &= NOT(DEF_PROMISC | DEF_MULTI | DEF_BROAD);
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if (mp->DL_MODE & DL_PROMISC_REQ)
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dep->de_flags |= DEF_PROMISC | DEF_MULTI | DEF_BROAD;
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if (mp->DL_MODE & DL_MULTI_REQ) dep->de_flags |= DEF_MULTI;
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if (mp->DL_MODE & DL_BROAD_REQ) dep->de_flags |= DEF_BROAD;
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(*dep->de_flagsf) (dep);
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dep->de_client = mp->m_source;
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break;
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case DEM_SINK:
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/* Device not present (sink mode) */
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memset(dep->de_address.ea_addr, 0, sizeof(ether_addr_t));
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dp_confaddr(dep); /* Station address from env. */
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break;
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default: break;
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}
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*(ether_addr_t *) reply_mess.m3_ca1 = dep->de_address;
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} else /* Port number is out of range */
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port = ENXIO;
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reply_mess.m_type = DL_CONF_REPLY;
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reply_mess.m3_i1 = port;
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reply_mess.m3_i2 = DE_PORT_NR;
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DEBUG(printf("\t reply %d\n", reply_mess.m_type));
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if (send(mp->m_source, &reply_mess) != OK) /* Can't send */
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panic(dep->de_name, SendErrMsg, mp->m_source);
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return;
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}
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/*
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** Name: void dp_next_iovec(iovec_dat_t *iovp)
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** Function: Retrieves data from next iovec element.
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*/
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PUBLIC void dp_next_iovec(iovec_dat_s_t * iovp)
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{
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iovp->iod_iovec_s -= IOVEC_NR;
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iovp->iod_iovec_offset += IOVEC_NR * sizeof(iovec_t);
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get_userdata_s(iovp->iod_proc_nr, iovp->iod_grant, iovp->iod_iovec_offset,
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iovp->iod_iovec_s, iovp->iod_iovec);
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return;
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}
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/*
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** Name: int calc_iovec_size(iovec_dat_t *iovp)
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** Function: Compute the size of a request.
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*/
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static int calc_iovec_size(iovec_dat_s_t * iovp)
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{
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int size, ix;
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size = ix = 0;
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do {
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size += iovp->iod_iovec[ix].iov_size;
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if (++ix >= IOVEC_NR) {
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dp_next_iovec(iovp);
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ix = 0;
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}
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/* Till all vectors added */
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} while (ix < iovp->iod_iovec_s);
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return size;
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}
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/*
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** Name: void do_vwrite_s(message *mp, int vectored)
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** Function:
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*/
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static void do_vwrite_s(message * mp)
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{
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int port, size;
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dpeth_t *dep;
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port = mp->DL_PORT;
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if (port < 0 || port >= DE_PORT_NR) /* Check for illegal port number */
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panic(dep->de_name, PortErrMsg, port);
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dep = &de_table[port];
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dep->de_client = mp->DL_PROC;
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if (dep->de_mode == DEM_ENABLED) {
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if (dep->de_flags & DEF_SENDING) /* Is sending in progress? */
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panic(dep->de_name, "send already in progress ", NO_NUM);
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dep->de_write_iovec.iod_proc_nr = mp->DL_PROC;
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get_userdata_s(mp->DL_PROC, mp->DL_GRANT, 0,
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mp->DL_COUNT, dep->de_write_iovec.iod_iovec);
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dep->de_write_iovec.iod_iovec_s = mp->DL_COUNT;
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dep->de_write_iovec.iod_grant = (vir_bytes) mp->DL_GRANT;
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dep->de_write_iovec.iod_iovec_offset = 0;
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size = calc_iovec_size(&dep->de_write_iovec);
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if (size < ETH_MIN_PACK_SIZE || size > ETH_MAX_PACK_SIZE)
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panic(dep->de_name, SizeErrMsg, size);
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dep->de_flags |= DEF_SENDING;
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(*dep->de_sendf) (dep, FALSE, size);
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} else if (dep->de_mode == DEM_SINK)
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dep->de_flags |= DEF_ACK_SEND;
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reply(dep, OK, DL_TASK_REPLY);
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return;
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}
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/*
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** Name: void do_vread_s(message *mp, int vectored)
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** Function:
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*/
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static void do_vread_s(message * mp)
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{
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int port, size;
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dpeth_t *dep;
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port = mp->DL_PORT;
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if (port < 0 || port >= DE_PORT_NR) /* Check for illegal port number */
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panic(dep->de_name, PortErrMsg, port);
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dep = &de_table[port];
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dep->de_client = mp->DL_PROC;
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if (dep->de_mode == DEM_ENABLED) {
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if (dep->de_flags & DEF_READING) /* Reading in progress */
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panic(dep->de_name, "read already in progress", NO_NUM);
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dep->de_read_iovec.iod_proc_nr = mp->DL_PROC;
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get_userdata_s(mp->DL_PROC, (vir_bytes) mp->DL_GRANT, 0,
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mp->DL_COUNT, dep->de_read_iovec.iod_iovec);
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dep->de_read_iovec.iod_iovec_s = mp->DL_COUNT;
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dep->de_read_iovec.iod_grant = (vir_bytes) mp->DL_GRANT;
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dep->de_read_iovec.iod_iovec_offset = 0;
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size = calc_iovec_size(&dep->de_read_iovec);
|
|
if (size < ETH_MAX_PACK_SIZE) panic(dep->de_name, SizeErrMsg, size);
|
|
|
|
dep->de_flags |= DEF_READING;
|
|
(*dep->de_recvf) (dep, FALSE, size);
|
|
#if 0
|
|
if ((dep->de_flags & (DEF_READING | DEF_STOPPED)) == (DEF_READING | DEF_STOPPED))
|
|
/* The chip is stopped, and all arrived packets delivered */
|
|
(*dep->de_resetf) (dep);
|
|
dep->de_flags &= NOT(DEF_STOPPED);
|
|
#endif
|
|
}
|
|
reply(dep, OK, DL_TASK_REPLY);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
** Name: void do_getstat_s(message *mp)
|
|
** Function: Reports device statistics.
|
|
*/
|
|
static void do_getstat_s(message * mp)
|
|
{
|
|
int port, rc;
|
|
dpeth_t *dep;
|
|
|
|
port = mp->DL_PORT;
|
|
if (port < 0 || port >= DE_PORT_NR) /* Check for illegal port number */
|
|
panic(dep->de_name, PortErrMsg, port);
|
|
|
|
dep = &de_table[port];
|
|
dep->de_client = mp->DL_PROC;
|
|
|
|
if (dep->de_mode == DEM_ENABLED) (*dep->de_getstatsf) (dep);
|
|
if ((rc = sys_safecopyto(mp->DL_PROC, mp->DL_GRANT, 0,
|
|
(vir_bytes)&dep->de_stat,
|
|
(vir_bytes) sizeof(dep->de_stat), 0)) != OK)
|
|
panic(DevName, CopyErrMsg, rc);
|
|
reply(dep, OK, DL_STAT_REPLY);
|
|
return;
|
|
}
|
|
|
|
static void do_getname(mp)
|
|
message *mp;
|
|
{
|
|
int r;
|
|
|
|
strncpy(mp->DL_NAME, progname, sizeof(mp->DL_NAME));
|
|
mp->DL_NAME[sizeof(mp->DL_NAME)-1]= '\0';
|
|
mp->m_type= DL_NAME_REPLY;
|
|
r= send(mp->m_source, mp);
|
|
if (r != OK)
|
|
panic("dpeth", "do_getname: send failed: %d\n", r);
|
|
}
|
|
|
|
/*
|
|
** Name: void do_stop(message *mp)
|
|
** Function: Stops network interface.
|
|
*/
|
|
static void do_stop(message * mp)
|
|
{
|
|
int port;
|
|
dpeth_t *dep;
|
|
|
|
port = mp->DL_PORT;
|
|
if (port < 0 || port >= DE_PORT_NR) /* Check for illegal port number */
|
|
panic(dep->de_name, PortErrMsg, port);
|
|
|
|
dep = &de_table[port];
|
|
if (dep->de_mode == DEM_ENABLED && (dep->de_flags & DEF_ENABLED)) {
|
|
|
|
/* Stop device */
|
|
(dep->de_stopf) (dep);
|
|
dep->de_flags = DEF_EMPTY;
|
|
dep->de_mode = DEM_DISABLED;
|
|
}
|
|
return;
|
|
}
|
|
|
|
static void do_watchdog(void *message)
|
|
{
|
|
|
|
DEBUG(printf("\t no reply"));
|
|
return;
|
|
}
|
|
|
|
/*
|
|
** Name: int dpeth_task(void)
|
|
** Function: Main entry for dp task
|
|
*/
|
|
PUBLIC int main(int argc, char **argv)
|
|
{
|
|
message m;
|
|
dpeth_t *dep;
|
|
int rc, fkeys, sfkeys, tasknr;
|
|
|
|
(progname=strrchr(argv[0],'/')) ? progname++ : (progname=argv[0]);
|
|
|
|
env_setargs(argc, argv);
|
|
|
|
/* Request function key for debug dumps */
|
|
fkeys = sfkeys = 0; bit_set(sfkeys, 8);
|
|
if ((fkey_map(&fkeys, &sfkeys)) != OK)
|
|
printf("%s: couldn't program Shift+F8 key (%d)\n", DevName, errno);
|
|
|
|
#ifdef ETH_IGN_PROTO
|
|
{
|
|
static u16_t eth_ign_proto = 0;
|
|
long val;
|
|
val = 0xFFFF;
|
|
env_parse("ETH_IGN_PROTO", "x", 0, &val, 0x0000L, 0xFFFFL);
|
|
eth_ign_proto = htons((u16_t) val);
|
|
}
|
|
#endif
|
|
|
|
/* Try to notify inet that we are present (again) */
|
|
rc = _pm_findproc("inet", &tasknr);
|
|
if (rc == OK)
|
|
notify(tasknr);
|
|
|
|
while (TRUE) {
|
|
if ((rc = receive(ANY, &m)) != OK) panic(dep->de_name, RecvErrMsg, rc);
|
|
|
|
DEBUG(printf("eth: got message %d, ", m.m_type));
|
|
|
|
switch (m.m_type) {
|
|
case DEV_PING: /* Status request from RS */
|
|
notify(m.m_source);
|
|
continue;
|
|
case DL_WRITEV_S: /* Write message to device */
|
|
do_vwrite_s(&m);
|
|
break;
|
|
case DL_READV_S: /* Read message from device */
|
|
do_vread_s(&m);
|
|
break;
|
|
case DL_CONF: /* Initialize device */
|
|
do_init(&m);
|
|
break;
|
|
case DL_GETSTAT_S: /* Get device statistics */
|
|
do_getstat_s(&m);
|
|
break;
|
|
case DL_GETNAME:
|
|
do_getname(&m);
|
|
break;
|
|
case SYN_ALARM: /* to be defined */
|
|
do_watchdog(&m);
|
|
break;
|
|
case DL_STOP: /* Stop device */
|
|
do_stop(&m);
|
|
break;
|
|
case SYS_SIG: {
|
|
sigset_t sigset = m.NOTIFY_ARG;
|
|
if (sigismember(&sigset, SIGKSTOP)) { /* Shut down */
|
|
for (rc = 0; rc < DE_PORT_NR; rc += 1) {
|
|
if (de_table[rc].de_mode == DEM_ENABLED) {
|
|
m.m_type = DL_STOP;
|
|
m.DL_PORT = rc;
|
|
do_stop(&m);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case HARD_INT: /* Interrupt from device */
|
|
for (dep = de_table; dep < &de_table[DE_PORT_NR]; dep += 1) {
|
|
/* If device is enabled and interrupt pending */
|
|
if (dep->de_mode == DEM_ENABLED) {
|
|
dep->de_int_pending = TRUE;
|
|
(*dep->de_interruptf) (dep);
|
|
if (dep->de_flags & (DEF_ACK_SEND | DEF_ACK_RECV))
|
|
reply(dep, !OK, DL_TASK_REPLY);
|
|
dep->de_int_pending = FALSE;
|
|
sys_irqenable(&dep->de_hook);
|
|
}
|
|
}
|
|
break;
|
|
case FKEY_PRESSED: /* Function key pressed */
|
|
do_dump(&m);
|
|
break;
|
|
case PROC_EVENT:
|
|
break;
|
|
default: /* Invalid message type */
|
|
panic(DevName, TypeErrMsg, m.m_type);
|
|
break;
|
|
}
|
|
}
|
|
return OK; /* Never reached, but keeps compiler happy */
|
|
}
|
|
|
|
/** dp.c **/
|