📄 dp8390.c

📁 MINIX2.0操作系统源码 MINIX2.0操作系统源码
💻 C
📖 第 1 页 / 共 4 页
字号:
12 3 4 下一页
/*
 * dp8390.c
 *
 * This file contains a ethernet device driver for NS dp8390 based ethernet
 * cards.
 *
 * The valid messages and their parameters are:
 *
 *   m_type	  DL_PORT    DL_PROC   DL_COUNT   DL_MODE   DL_ADDR
 * |------------+----------+---------+----------+---------+---------|
 * | HARDINT	|          |         |          |         |         |
 * |------------|----------|---------|----------|---------|---------|
 * | DL_WRITE	| port nr  | proc nr | count    | mode    | address |
 * |------------|----------|---------|----------|---------|---------|
 * | DL_WRITEV	| port nr  | proc nr | count    | mode    | address |
 * |------------|----------|---------|----------|---------|---------|
 * | DL_READ	| port nr  | proc nr | count    |         | address |
 * |------------|----------|---------|----------|---------|---------|
 * | DL_READV	| port nr  | proc nr | count    |         | address |
 * |------------|----------|---------|----------|---------|---------|
 * | DL_INIT	| port nr  | proc nr | mode     |         | address |
 * |------------|----------|---------|----------|---------|---------|
 * | DL_GETSTAT	| port nr  | proc nr |          |         | address |
 * |------------|----------|---------|----------|---------|---------|
 * | DL_STOP	| port_nr  |         |          |         |	    |
 * |------------|----------|---------|----------|---------|---------|
 *
 * The messages sent are:
 *
 *   m-type	  DL_POR T   DL_PROC   DL_COUNT   DL_STAT   DL_CLCK
 * |------------|----------|---------|----------|---------|---------|
 * |DL_TASK_REPL| port nr  | proc nr | rd-count | err|stat| clock   |
 * |------------|----------|---------|----------|---------|---------|
 *
 *   m_type	  m3_i1     m3_i2       m3_ca1
 * |------------+---------+-----------+---------------|
 * |DL_INIT_REPL| port nr | last port | ethernet addr |
 * |------------|---------|-----------|---------------|
 *
 * Created:	before Dec 28, 1992 by Philip Homburg <philip@cs.vu.nl>
 *
 *		Modified to become a generic dp8390 driver.
 * 			March 10, 1994, Philip Homburg
 */

#include "kernel.h"
#include <stdlib.h>
#include <minix/com.h>
#include <net/hton.h>
#include <net/gen/ether.h>
#include <net/gen/eth_io.h>
#include "assert.h"
INIT_ASSERT
#include "protect.h"
#include "dp8390.h"
#include "proc.h"

#if ENABLE_NETWORKING

#if !__minix_vmd
#define printW()	(void) 0
#define debug		0
#endif

#define DE_PORT_NR	2

static dpeth_t de_table[DE_PORT_NR];
static int int_pending[NR_IRQ_VECTORS];
static int dpeth_tasknr= ANY;
static u16_t eth_ign_proto;

/* Configuration */
typedef struct dp_conf
{
	port_t dpc_port;
	int dpc_irq;
	phys_bytes dpc_mem;
	char *dpc_envvar;
	segm_t dpc_prot_sel;
} dp_conf_t;

dp_conf_t dp_conf[]=	/* Card addresses */
{
	/* I/O port, IRQ,  Buffer address,  Env. var,   Buf selector. */
	{  0x280,     3,    0xD0000,        "DPETH0",  DP_ETH0_SELECTOR },
	{  0x300,     5,    0xCC000,        "DPETH1",  DP_ETH1_SELECTOR },
};

/* Test if dp_conf has exactly DE_PORT_NR entries.  If not then you will see
 * the error: "array size is negative".
 */
extern int ___dummy[DE_PORT_NR == sizeof(dp_conf)/sizeof(dp_conf[0]) ? 1 : -1];


_PROTOTYPE( static void do_vwrite, (message *mp, int from_int,
							int vectored)	);
_PROTOTYPE( static void do_vread, (message *mp, int vectored)		);
_PROTOTYPE( static void do_init, (message *mp)				);
_PROTOTYPE( static void do_int, (dpeth_t *dep)				);
_PROTOTYPE( static void do_getstat, (message *mp)			);
_PROTOTYPE( static void do_stop, (message *mp)				);
_PROTOTYPE( static void dp_init, (dpeth_t *dep)				);
_PROTOTYPE( static void dp_confaddr, (dpeth_t *dep)			);
_PROTOTYPE( static void dp_reinit, (dpeth_t *dep)			);
_PROTOTYPE( static void dp_reset, (dpeth_t *dep)			);
_PROTOTYPE( static void dp_check_ints, (dpeth_t *dep)			);
_PROTOTYPE( static void dp_recv, (dpeth_t *dep)				);
_PROTOTYPE( static void dp_send, (dpeth_t *dep)				);
_PROTOTYPE( static void dp_getblock, (dpeth_t *dep, int page,
				size_t offset, size_t size, void *dst)	);
_PROTOTYPE( static void dp_pio8_getblock, (dpeth_t *dep, int page,
				size_t offset, size_t size, void *dst)	);
_PROTOTYPE( static void dp_pio16_getblock, (dpeth_t *dep, int page,
				size_t offset, size_t size, void *dst)	);
_PROTOTYPE( static int dp_pkt2user, (dpeth_t *dep, int page,
							int length)	);
_PROTOTYPE( static void dp_user2nic, (dpeth_t *dep, iovec_dat_t *iovp, 
		vir_bytes offset, int nic_addr, vir_bytes count)	);
_PROTOTYPE( static void dp_pio8_user2nic, (dpeth_t *dep,
				iovec_dat_t *iovp, vir_bytes offset,
				int nic_addr, vir_bytes count)		);
_PROTOTYPE( static void dp_pio16_user2nic, (dpeth_t *dep,
				iovec_dat_t *iovp, vir_bytes offset,
				int nic_addr, vir_bytes count)		);
_PROTOTYPE( static void dp_nic2user, (dpeth_t *dep, int nic_addr, 
		iovec_dat_t *iovp, vir_bytes offset, vir_bytes count)	);
_PROTOTYPE( static void dp_pio8_nic2user, (dpeth_t *dep, int nic_addr, 
		iovec_dat_t *iovp, vir_bytes offset, vir_bytes count)	);
_PROTOTYPE( static void dp_pio16_nic2user, (dpeth_t *dep, int nic_addr, 
		iovec_dat_t *iovp, vir_bytes offset, vir_bytes count)	);
_PROTOTYPE( static void dp_next_iovec, (iovec_dat_t *iovp)		);
_PROTOTYPE( static int dp_handler, (int irq)				);
_PROTOTYPE( static void conf_hw, (dpeth_t *dep)				);
_PROTOTYPE( static void update_conf, (dpeth_t *dep, dp_conf_t *dcp)	);
_PROTOTYPE( static int calc_iovec_size, (iovec_dat_t *iovp)		);
_PROTOTYPE( static void reply, (dpeth_t *dep, int err, int may_block)	);
_PROTOTYPE( static void mess_reply, (message *req, message *reply)	);
_PROTOTYPE( static void get_userdata, (int user_proc,
		vir_bytes user_addr, vir_bytes count, void *loc_addr)	);
_PROTOTYPE( static void put_userdata, (int user_proc,
		vir_bytes user_addr, vir_bytes count, void *loc_addr)	);

/*===========================================================================*
 *				dpeth_task				     *
 *===========================================================================*/
void dp8390_task()
{
	message m;
	int i, irq, r;
	dpeth_t *dep;
	long v;

	dpeth_tasknr= proc_number(proc_ptr);

	v= 0xFFFF;
	(void) env_parse("ETH_IGN_PROTO", "x", 0, &v, 0x0000L, 0xFFFFL);
	eth_ign_proto= htons((u16_t) v);

	while (TRUE)
	{
		if ((r= receive(ANY, &m)) != OK)
			panic("dp8390: receive failed", r);

		switch (m.m_type)
		{
		case DL_WRITE:	do_vwrite(&m, FALSE, FALSE);	break;
		case DL_WRITEV:	do_vwrite(&m, FALSE, TRUE);	break;
		case DL_READ:	do_vread(&m, FALSE);		break;
		case DL_READV:	do_vread(&m, TRUE);		break;
		case DL_INIT:	do_init(&m);			break;
		case DL_GETSTAT: do_getstat(&m);		break;
		case DL_STOP:	do_stop(&m);			break;
		case HARD_INT:
			for (i= 0, dep= &de_table[0]; i<DE_PORT_NR; i++, dep++)
			{
				if (dep->de_mode != DEM_ENABLED)
					continue;
				assert(dep->de_flags & DEF_ENABLED);
				irq= dep->de_irq;
				assert(irq >= 0 && irq < NR_IRQ_VECTORS);
				if (int_pending[irq])
				{
					int_pending[irq]= 0;
					dp_check_ints(dep);
					do_int(dep);
				}
			}
			break;
		default:
			panic("dp8390: illegal message", m.m_type);
		}
	}
}


/*===========================================================================*
 *				dp_dump					     *
 *===========================================================================*/
void dp_dump()
{
	dpeth_t *dep;
	int i, isr;

	printf("\n");
	for (i= 0, dep = &de_table[0]; i<DE_PORT_NR; i++, dep++)
	{
		if (dep->de_mode == DEM_DISABLED)
			printf("dp8390 port %d is disabled\n", i);
		else if (dep->de_mode == DEM_SINK)
			printf("dp8390 port %d is in sink mode\n", i);

		if (dep->de_mode != DEM_ENABLED)
			continue;

		printf("dp8390 statistics of port %d:\n", i);

		printf("recvErr    :%8ld\t", dep->de_stat.ets_recvErr);
		printf("sendErr    :%8ld\t", dep->de_stat.ets_sendErr);
		printf("OVW        :%8ld\n", dep->de_stat.ets_OVW);

		printf("CRCerr     :%8ld\t", dep->de_stat.ets_CRCerr);
		printf("frameAll   :%8ld\t", dep->de_stat.ets_frameAll);
		printf("missedP    :%8ld\n", dep->de_stat.ets_missedP);

		printf("packetR    :%8ld\t", dep->de_stat.ets_packetR);
		printf("packetT    :%8ld\t", dep->de_stat.ets_packetT);
		printf("transDef   :%8ld\n", dep->de_stat.ets_transDef);

		printf("collision  :%8ld\t", dep->de_stat.ets_collision);
		printf("transAb    :%8ld\t", dep->de_stat.ets_transAb);
		printf("carrSense  :%8ld\n", dep->de_stat.ets_carrSense);

		printf("fifoUnder  :%8ld\t", dep->de_stat.ets_fifoUnder);
		printf("fifoOver   :%8ld\t", dep->de_stat.ets_fifoOver);
		printf("CDheartbeat:%8ld\n", dep->de_stat.ets_CDheartbeat);

		printf("OWC        :%8ld\t", dep->de_stat.ets_OWC);

		isr= inb_reg0(dep, DP_ISR);
		printf("dp_isr = 0x%x + 0x%x, de_flags = 0x%x\n", isr,
					inb_reg0(dep, DP_ISR), dep->de_flags);
	}
}


/*===========================================================================*
 *				dp8390_stop				     *
 *===========================================================================*/
void dp8390_stop()
{
	message mess;
	int i;

	for (i= 0; i<DE_PORT_NR; i++)
	{
		if (de_table[i].de_mode != DEM_ENABLED)
			continue;
		mess.m_type= DL_STOP;
		mess.DL_PORT= i;
		do_stop(&mess);
	}
}


/*===========================================================================*
 *				do_vwrite				     *
 *===========================================================================*/
static void do_vwrite(mp, from_int, vectored)
message *mp;
int from_int;
int vectored;
{
	int port, count, size;
	int sendq_head;
	dpeth_t *dep;

	port = mp->DL_PORT;
	count = mp->DL_COUNT;
	if (port < 0 || port >= DE_PORT_NR)
		panic("dp8390: illegal port", port);
	dep= &de_table[port];
	dep->de_client= mp->DL_PROC;

	if (dep->de_mode == DEM_SINK)
	{
		assert(!from_int);
		dep->de_flags |= DEF_PACK_SEND;
		reply(dep, OK, FALSE);
		return;
	}
	assert(dep->de_mode == DEM_ENABLED);
	assert(dep->de_flags & DEF_ENABLED);
	if (dep->de_flags & DEF_SEND_AVAIL)
		panic("dp8390: send already in progress", NO_NUM);

	sendq_head= dep->de_sendq_head;
	if (dep->de_sendq[sendq_head].sq_filled)
	{
		if (from_int)
			panic("dp8390: should not be sending\n", NO_NUM);
		dep->de_sendmsg= *mp;
		dep->de_flags |= DEF_SEND_AVAIL;
		reply(dep, OK, FALSE);
		return;
	}
	assert(!(dep->de_flags & DEF_PACK_SEND));

	if (vectored)
	{
		get_userdata(mp->DL_PROC, (vir_bytes) mp->DL_ADDR,
			(count > IOVEC_NR ? IOVEC_NR : count) *
			sizeof(iovec_t), dep->de_write_iovec.iod_iovec);
		dep->de_write_iovec.iod_iovec_s = count;
		dep->de_write_iovec.iod_proc_nr = mp->DL_PROC;
		dep->de_write_iovec.iod_iovec_addr = (vir_bytes) mp->DL_ADDR;

		dep->de_tmp_iovec = dep->de_write_iovec;
		size = calc_iovec_size(&dep->de_tmp_iovec);
	}
	else
	{  
		dep->de_write_iovec.iod_iovec[0].iov_addr =
			(vir_bytes) mp->DL_ADDR;
		dep->de_write_iovec.iod_iovec[0].iov_size =
			mp->DL_COUNT;
		dep->de_write_iovec.iod_iovec_s = 1;
		dep->de_write_iovec.iod_proc_nr = mp->DL_PROC;
		dep->de_write_iovec.iod_iovec_addr = 0;
		size= mp->DL_COUNT;
	}
	if (size < ETH_MIN_PACK_SIZE || size > ETH_MAX_PACK_SIZE)
	{
		panic("dp8390: invalid packet size", size);
	}
	(dep->de_user2nicf)(dep, &dep->de_write_iovec, 0,
		dep->de_sendq[sendq_head].sq_sendpage * DP_PAGESIZE,
		size);
	dep->de_sendq[sendq_head].sq_filled= TRUE;
	if (dep->de_sendq_tail == sendq_head)
	{
		outb_reg0(dep, DP_TPSR, dep->de_sendq[sendq_head].sq_sendpage);
		outb_reg0(dep, DP_TBCR1, size >> 8);
		outb_reg0(dep, DP_TBCR0, size & 0xff);
		outb_reg0(dep, DP_CR, CR_TXP);	/* there it goes.. */
	}
	else
		dep->de_sendq[sendq_head].sq_size= size;
	
	if (++sendq_head == dep->de_sendq_nr)
		sendq_head= 0;
	assert(sendq_head < SENDQ_NR);
	dep->de_sendq_head= sendq_head;

	dep->de_flags |= DEF_PACK_SEND;

	/* If the interrupt handler called, don't send a reply. The reply
	 * will be sent after all interrupts are handled. 
	 */
	if (from_int)
		return;
	reply(dep, OK, FALSE);

	assert(dep->de_mode == DEM_ENABLED);
	assert(dep->de_flags & DEF_ENABLED);
}


/*===========================================================================*
 *				do_vread				     *
 *===========================================================================*/
static void do_vread(mp, vectored)
message *mp;
int vectored;
{
	int port, count;
	int size;
	dpeth_t *dep;

	port = mp->DL_PORT;
	count = mp->DL_COUNT;
	if (port < 0 || port >= DE_PORT_NR)
		panic("dp8390: illegal port", port);
	dep= &de_table[port];
	dep->de_client= mp->DL_PROC;
	if (dep->de_mode == DEM_SINK)
	{
		reply(dep, OK, FALSE);
		return;
	}
	assert(dep->de_mode == DEM_ENABLED);
	assert(dep->de_flags & DEF_ENABLED);

	if(dep->de_flags & DEF_READING)
		panic("dp8390: read already in progress", NO_NUM);

	if (vectored)
	{
		get_userdata(mp->DL_PROC, (vir_bytes) mp->DL_ADDR,
			(count > IOVEC_NR ? IOVEC_NR : count) *
			sizeof(iovec_t), dep->de_read_iovec.iod_iovec);
		dep->de_read_iovec.iod_iovec_s = count;
		dep->de_read_iovec.iod_proc_nr = mp->DL_PROC;
		dep->de_read_iovec.iod_iovec_addr = (vir_bytes) mp->DL_ADDR;

		dep->de_tmp_iovec = dep->de_read_iovec;
		size= calc_iovec_size(&dep->de_tmp_iovec);
	}
	else
	{
		dep->de_read_iovec.iod_iovec[0].iov_addr =
			(vir_bytes) mp->DL_ADDR;
		dep->de_read_iovec.iod_iovec[0].iov_size =
			mp->DL_COUNT;
		dep->de_read_iovec.iod_iovec_s = 1;
		dep->de_read_iovec.iod_proc_nr = mp->DL_PROC;
		dep->de_read_iovec.iod_iovec_addr = 0;
		size= count;
	}
	if (size < ETH_MAX_PACK_SIZE)
		panic("dp8390: wrong packet size", size);
	dep->de_flags |= DEF_READING;

	dp_recv(dep);

	if ((dep->de_flags & (DEF_READING|DEF_STOPPED)) ==
		(DEF_READING|DEF_STOPPED))
	{
		/* The chip is stopped, and all arrived packets are 
		 * delivered.
		 */
		dp_reset(dep);
	}
	reply(dep, OK, FALSE);
}


/*===========================================================================*
 *				do_init					     *
 *===========================================================================*/
static void do_init(mp)
12 3 4 下一页
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -