1619 lines
46 KiB
C
1619 lines
46 KiB
C
/*
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* lance.c
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*
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* This file contains a ethernet device driver for AMD LANCE based ethernet
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* cards.
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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_COUNT DL_MODE DL_GRANT
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* |--------------+----------+---------+---------|
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* | DL_WRITEV_S | count | | grant |
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* |--------------|----------|---------|---------|
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* | DL_READV_S | count | | grant |
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* |--------------|----------|---------|---------|
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* | DL_CONF | | mode | |
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* |--------------|----------|---------|---------|
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* | DL_GETSTAT_S | | | grant |
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* |--------------|----------|---------|---------|
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* | hardware int | | | |
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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_COUNT DL_FLAGS
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* |---------------+----------+---------|
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* | DL_TASK_REPLY | rd-count | flags |
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* |---------------|----------|---------|
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*
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* m_type
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* |---------------|
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* | DL_STAT_REPLY |
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* |---------------|
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*
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* m_type DL_STAT DL_ADDR
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* |---------------+---------+---------------|
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* | DL_CONF_REPLY | code | ethernet addr |
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* |---------------|---------|---------------|
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*
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* Created: Jul 27, 2002 by Kazuya Kodama <kazuya@nii.ac.jp>
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* Adapted for Minix 3: Sep 05, 2005 by Joren l'Ami <jwlami@cs.vu.nl>
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*/
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#define VERBOSE 0 /* Verbose debugging output */
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#define LANCE_FKEY 0 /* Use function key to dump Lance stats */
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#include <minix/drivers.h>
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#include <minix/netdriver.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 <assert.h>
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#include <minix/syslib.h>
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#include <minix/endpoint.h>
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#include <machine/pci.h>
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#include <minix/ds.h>
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#include "lance.h"
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static ether_card_t ec_state;
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static int ec_instance;
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/* Configuration */
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typedef struct ec_conf
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{
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port_t ec_port;
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int ec_irq;
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phys_bytes ec_mem;
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} ec_conf_t;
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/* We hardly use these. Just "LANCE0=on/off" "LANCE1=on/off" mean. */
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#define EC_CONF_NR 3
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ec_conf_t ec_conf[EC_CONF_NR]= /* Card addresses */
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{
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/* I/O port, IRQ, Buffer address. */
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{ 0x1000, 9, 0x00000, },
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{ 0xD000, 15, 0x00000, },
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{ 0x0000, 0, 0x00000, },
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};
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/* General */
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static void do_init(message *mp);
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static void ec_init(ether_card_t *ec);
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static void ec_confaddr(ether_card_t *ec);
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static void ec_reinit(ether_card_t *ec);
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static void ec_check_ints(ether_card_t *ec);
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static void conf_hw(ether_card_t *ec);
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static void update_conf(ether_card_t *ec, ec_conf_t *ecp);
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static void mess_reply(message *req, message *reply);
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static void do_int(ether_card_t *ec);
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static void reply(ether_card_t *ec);
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static void ec_reset(ether_card_t *ec);
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static void ec_send(ether_card_t *ec);
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static void ec_recv(ether_card_t *ec);
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static void do_vwrite_s(message *mp, int from_int);
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static void do_vread_s(const message *mp);
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static void ec_user2nic(ether_card_t *dep, iovec_dat_t *iovp, vir_bytes
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offset, int nic_addr, vir_bytes count);
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static void ec_nic2user(ether_card_t *ec, int nic_addr, iovec_dat_t
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*iovp, vir_bytes offset, vir_bytes count);
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static int calc_iovec_size(iovec_dat_t *iovp);
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static void ec_next_iovec(iovec_dat_t *iovp);
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static void do_getstat_s(message *mp);
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static void lance_stop(ether_card_t *ec);
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static void lance_dump(void);
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static void getAddressing(int devind, ether_card_t *ec);
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/* probe+init LANCE cards */
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static int lance_probe(ether_card_t *ec, int skip);
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static void lance_init_card(ether_card_t *ec);
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/* Accesses Lance Control and Status Registers */
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static u8_t in_byte(port_t port);
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static u16_t in_word(port_t port);
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static void out_word(port_t port, u16_t value);
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static u16_t read_csr(port_t ioaddr, u16_t csrno);
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static void write_csr(port_t ioaddr, u16_t csrno, u16_t value);
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/* --- LANCE --- */
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/* General */
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typedef unsigned long Address;
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#define virt_to_bus(x) (vir2phys((unsigned long)x))
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unsigned long vir2phys( unsigned long x )
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{
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int r;
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unsigned long value;
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if ( (r=sys_umap( SELF, VM_D, x, 4, &value )) != OK ) {
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printf("lance: umap of 0x%lx failed\n",x );
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panic("sys_umap failed: %d", r);
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}
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return value;
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}
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/* DMA limitations */
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#define DMA_ADDR_MASK 0xFFFFFF /* mask to verify DMA address is 24-bit */
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#define CORRECT_DMA_MEM() ( (virt_to_bus(lance_buf + sizeof(struct lance_interface)) & ~DMA_ADDR_MASK) == 0 )
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#define ETH_FRAME_LEN 1518
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#define LANCE_MUST_PAD 0x00000001
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#define LANCE_ENABLE_AUTOSELECT 0x00000002
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#define LANCE_SELECT_PHONELINE 0x00000004
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#define LANCE_MUST_UNRESET 0x00000008
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static const struct lance_chip_type
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{
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int id_number;
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const char *name;
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int flags;
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} chip_table[] = {
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{0x0000, "LANCE 7990", /* Ancient lance chip. */
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LANCE_MUST_PAD + LANCE_MUST_UNRESET},
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{0x0003, "PCnet/ISA 79C960", /* 79C960 PCnet/ISA. */
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LANCE_ENABLE_AUTOSELECT},
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{0x2260, "PCnet/ISA+ 79C961", /* 79C961 PCnet/ISA+, Plug-n-Play. */
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LANCE_ENABLE_AUTOSELECT},
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{0x2420, "PCnet/PCI 79C970", /* 79C970 or 79C974 PCnet-SCSI, PCI. */
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LANCE_ENABLE_AUTOSELECT},
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{0x2430, "PCnet32", /* 79C965 PCnet for VL bus. */
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LANCE_ENABLE_AUTOSELECT},
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{0x2621, "PCnet/PCI-II 79C970A", /* 79C970A PCInetPCI II. */
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LANCE_ENABLE_AUTOSELECT},
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{0x2625, "PCnet-FAST III 79C973",/* 79C973 PCInet-FAST III. */
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LANCE_ENABLE_AUTOSELECT},
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{0x2626, "PCnet/HomePNA 79C978",
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LANCE_ENABLE_AUTOSELECT|LANCE_SELECT_PHONELINE},
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{0x0, "PCnet (unknown)",
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LANCE_ENABLE_AUTOSELECT},
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};
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/* ############## for LANCE device ############## */
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#define LANCE_ETH_ADDR 0x0
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#define LANCE_DATA 0x10
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#define LANCE_ADDR 0x12
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#define LANCE_RESET 0x14
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#define LANCE_BUS_IF 0x16
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#define LANCE_TOTAL_SIZE 0x18
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/* Use 2^4=16 {Rx,Tx} buffers */
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#define LANCE_LOG_RX_BUFFERS 4
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#define RX_RING_SIZE (1 << (LANCE_LOG_RX_BUFFERS))
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#define RX_RING_MOD_MASK (RX_RING_SIZE - 1)
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#define RX_RING_LEN_BITS ((LANCE_LOG_RX_BUFFERS) << 29)
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#define LANCE_LOG_TX_BUFFERS 4
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#define TX_RING_SIZE (1 << (LANCE_LOG_TX_BUFFERS))
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#define TX_RING_MOD_MASK (TX_RING_SIZE - 1)
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#define TX_RING_LEN_BITS ((LANCE_LOG_TX_BUFFERS) << 29)
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/* for lance_interface */
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struct lance_init_block
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{
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unsigned short mode;
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unsigned char phys_addr[6];
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unsigned long filter[2];
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Address rx_ring;
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Address tx_ring;
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};
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struct lance_rx_head
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{
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union {
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Address base;
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unsigned char addr[4];
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} u;
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short buf_length; /* 2s complement */
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short msg_length;
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};
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struct lance_tx_head
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{
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union {
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Address base;
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unsigned char addr[4];
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} u;
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short buf_length; /* 2s complement */
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short misc;
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};
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struct lance_interface
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{
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struct lance_init_block init_block;
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struct lance_rx_head rx_ring[RX_RING_SIZE];
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struct lance_tx_head tx_ring[TX_RING_SIZE];
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unsigned char rbuf[RX_RING_SIZE][ETH_FRAME_LEN];
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unsigned char tbuf[TX_RING_SIZE][ETH_FRAME_LEN];
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};
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/* =============== global variables =============== */
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/* AKA the stuff that really should have been in ether_card_t */
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static struct lance_interface *lp;
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#define LANCE_BUF_SIZE (sizeof(struct lance_interface))
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static char *lance_buf = NULL;
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static int rx_slot_nr = 0; /* Rx-slot number */
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static int tx_slot_nr = 0; /* Tx-slot number */
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static int cur_tx_slot_nr = 0; /* Tx-slot number */
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static char isstored[TX_RING_SIZE]; /* Tx-slot in-use */
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phys_bytes lance_buf_phys;
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/* SEF functions and variables. */
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static void sef_local_startup(void);
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static int sef_cb_init_fresh(int type, sef_init_info_t *info);
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static void sef_cb_signal_handler(int signo);
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/*===========================================================================*
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* main *
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*===========================================================================*/
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int main( int argc, char **argv )
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{
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message m;
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int ipc_status;
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int r;
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ether_card_t *ec;
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/* SEF local startup. */
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env_setargs(argc, argv);
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sef_local_startup();
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ec= &ec_state;
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while (TRUE)
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{
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if (ec->ec_irq != 0)
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sys_irqenable(&ec->ec_hook);
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if ((r= netdriver_receive(ANY, &m, &ipc_status)) != OK)
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panic("netdriver_receive failed: %d", r);
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if (ec->ec_irq != 0)
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sys_irqdisable(&ec->ec_hook);
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if (is_ipc_notify(ipc_status)) {
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switch(_ENDPOINT_P(m.m_source)) {
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case TTY_PROC_NR:
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lance_dump();
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break;
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case HARDWARE:
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if (ec->mode == EC_ENABLED)
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{
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ec->ec_int_pending = 0;
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ec_check_ints(ec);
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do_int(ec);
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}
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break;
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default:
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panic("illegal notify source: %d", m.m_source);
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}
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/* get next message */
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continue;
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}
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switch (m.m_type)
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{
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case DL_WRITEV_S:
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do_vwrite_s(&m, FALSE);
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break;
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case DL_READV_S:
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do_vread_s(&m);
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break;
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case DL_CONF:
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do_init(&m);
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break;
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case DL_GETSTAT_S:
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do_getstat_s(&m);
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break;
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default:
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panic("illegal message: %d", m.m_type);
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}
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}
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return 0;
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}
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/*===========================================================================*
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* sef_local_startup *
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*===========================================================================*/
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static void sef_local_startup()
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{
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/* Register init callbacks. */
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sef_setcb_init_fresh(sef_cb_init_fresh);
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sef_setcb_init_lu(sef_cb_init_fresh);
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sef_setcb_init_restart(sef_cb_init_fresh);
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/* Register live update callbacks. */
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sef_setcb_lu_prepare(sef_cb_lu_prepare_always_ready);
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sef_setcb_lu_state_isvalid(sef_cb_lu_state_isvalid_workfree);
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/* Register signal callbacks. */
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sef_setcb_signal_handler(sef_cb_signal_handler);
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/* Let SEF perform startup. */
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sef_startup();
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}
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/*===========================================================================*
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* sef_cb_init_fresh *
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*===========================================================================*/
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static int sef_cb_init_fresh(int type, sef_init_info_t *UNUSED(info))
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{
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/* Initialize the lance driver. */
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long v;
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#if LANCE_FKEY
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int r, fkeys, sfkeys;
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#endif
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#if LANCE_FKEY
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fkeys = sfkeys = 0;
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bit_set( sfkeys, 7 );
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if ( (r = fkey_map(&fkeys, &sfkeys)) != OK )
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printf("Warning: lance couldn't observe Shift+F7 key: %d\n",r);
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#endif
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v = 0;
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(void) env_parse("instance", "d", 0, &v, 0, 255);
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ec_instance = (int) v;
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/* Announce we are up! */
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netdriver_announce();
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return OK;
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}
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/*===========================================================================*
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* sef_cb_signal_handler *
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*===========================================================================*/
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static void sef_cb_signal_handler(int signo)
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{
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/* Only check for termination signal, ignore anything else. */
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if (signo != SIGTERM) return;
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if (ec_state.mode == EC_ENABLED)
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lance_stop(&ec_state);
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#if VERBOSE
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printf("LANCE driver stopped.\n");
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#endif
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exit(0);
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}
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/*===========================================================================*
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* lance_dump *
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*===========================================================================*/
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static void lance_dump()
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{
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ether_card_t *ec;
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int isr, csr;
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unsigned short ioaddr;
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printf("\n");
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ec = &ec_state;
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if (ec->mode == EC_DISABLED)
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printf("lance instance %d is disabled\n", ec_instance);
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else if (ec->mode == EC_SINK)
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printf("lance instance %d is in sink mode\n", ec_instance);
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if (ec->mode != EC_ENABLED)
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return;
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printf("lance statistics of instance %d:\n", ec_instance);
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printf("recvErr :%8ld\t", ec->eth_stat.ets_recvErr);
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printf("sendErr :%8ld\t", ec->eth_stat.ets_sendErr);
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printf("OVW :%8ld\n", ec->eth_stat.ets_OVW);
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printf("CRCerr :%8ld\t", ec->eth_stat.ets_CRCerr);
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printf("frameAll :%8ld\t", ec->eth_stat.ets_frameAll);
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printf("missedP :%8ld\n", ec->eth_stat.ets_missedP);
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printf("packetR :%8ld\t", ec->eth_stat.ets_packetR);
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printf("packetT :%8ld\t", ec->eth_stat.ets_packetT);
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printf("transDef :%8ld\n", ec->eth_stat.ets_transDef);
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printf("collision :%8ld\t", ec->eth_stat.ets_collision);
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printf("transAb :%8ld\t", ec->eth_stat.ets_transAb);
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printf("carrSense :%8ld\n", ec->eth_stat.ets_carrSense);
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printf("fifoUnder :%8ld\t", ec->eth_stat.ets_fifoUnder);
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printf("fifoOver :%8ld\t", ec->eth_stat.ets_fifoOver);
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printf("CDheartbeat:%8ld\n", ec->eth_stat.ets_CDheartbeat);
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printf("OWC :%8ld\t", ec->eth_stat.ets_OWC);
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ioaddr = ec->ec_port;
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isr = read_csr(ioaddr, LANCE_CSR0);
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printf("isr = 0x%x, flags = 0x%x\n", isr,
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ec->flags);
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printf("irq = %d\tioadr = 0x%x\n", ec->ec_irq, ec->ec_port);
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csr = read_csr(ioaddr, LANCE_CSR0);
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printf("CSR0: 0x%x\n", csr);
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csr = read_csr(ioaddr, LANCE_CSR3);
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printf("CSR3: 0x%x\n", csr);
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csr = read_csr(ioaddr, LANCE_CSR4);
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printf("CSR4: 0x%x\n", csr);
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csr = read_csr(ioaddr, LANCE_CSR5);
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printf("CSR5: 0x%x\n", csr);
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csr = read_csr(ioaddr, LANCE_CSR15);
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printf("CSR15: 0x%x\n", csr);
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}
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/*===========================================================================*
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* do_init *
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*===========================================================================*/
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static void do_init(mp)
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message *mp;
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{
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ether_card_t *ec;
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message reply_mess;
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pci_init();
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if(!lance_buf && !(lance_buf = alloc_contig(LANCE_BUF_SIZE, AC_ALIGN4K|AC_LOWER16M, &lance_buf_phys))) {
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panic("alloc_contig failed: %d", LANCE_BUF_SIZE);
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}
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ec= &ec_state;
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strlcpy(ec->port_name, "lance#0", sizeof(ec->port_name));
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ec->port_name[6] += ec_instance;
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if (ec->mode == EC_DISABLED)
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{
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/* This is the default, try to (re)locate the device. */
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/* only try to enable if memory is correct for DMA */
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if ( CORRECT_DMA_MEM() )
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{
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conf_hw(ec);
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}
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else
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{
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printf("LANCE: DMA denied because address out of range\n" );
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}
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if (ec->mode == EC_DISABLED)
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{
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/* Probe failed, or the device is configured off. */
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reply_mess.m_type= DL_CONF_REPLY;
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reply_mess.DL_STAT = ENXIO;
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mess_reply(mp, &reply_mess);
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return;
|
|
}
|
|
if (ec->mode == EC_ENABLED)
|
|
ec_init(ec);
|
|
}
|
|
|
|
if (ec->mode == EC_SINK)
|
|
{
|
|
ec->mac_address.ea_addr[0] =
|
|
ec->mac_address.ea_addr[1] =
|
|
ec->mac_address.ea_addr[2] =
|
|
ec->mac_address.ea_addr[3] =
|
|
ec->mac_address.ea_addr[4] =
|
|
ec->mac_address.ea_addr[5] = 0;
|
|
ec_confaddr(ec);
|
|
reply_mess.m_type = DL_CONF_REPLY;
|
|
reply_mess.DL_STAT = OK;
|
|
*(ether_addr_t *) reply_mess.DL_HWADDR = ec->mac_address;
|
|
mess_reply(mp, &reply_mess);
|
|
return;
|
|
}
|
|
assert(ec->mode == EC_ENABLED);
|
|
assert(ec->flags & ECF_ENABLED);
|
|
|
|
ec->flags &= ~(ECF_PROMISC | ECF_MULTI | ECF_BROAD);
|
|
|
|
if (mp->DL_MODE & DL_PROMISC_REQ)
|
|
ec->flags |= ECF_PROMISC | ECF_MULTI | ECF_BROAD;
|
|
if (mp->DL_MODE & DL_MULTI_REQ)
|
|
ec->flags |= ECF_MULTI;
|
|
if (mp->DL_MODE & DL_BROAD_REQ)
|
|
ec->flags |= ECF_BROAD;
|
|
|
|
ec_reinit(ec);
|
|
|
|
reply_mess.m_type = DL_CONF_REPLY;
|
|
reply_mess.DL_STAT = OK;
|
|
*(ether_addr_t *) reply_mess.DL_HWADDR = ec->mac_address;
|
|
|
|
mess_reply(mp, &reply_mess);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* do_int *
|
|
*===========================================================================*/
|
|
static void do_int(ec)
|
|
ether_card_t *ec;
|
|
{
|
|
if (ec->flags & (ECF_PACK_SEND | ECF_PACK_RECV))
|
|
reply(ec);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* conf_hw *
|
|
*===========================================================================*/
|
|
static void conf_hw(ec)
|
|
ether_card_t *ec;
|
|
{
|
|
static eth_stat_t empty_stat = {0, 0, 0, 0, 0, 0 /* ,... */ };
|
|
|
|
int confnr;
|
|
ec_conf_t *ecp;
|
|
|
|
ec->mode= EC_DISABLED; /* Superfluous */
|
|
|
|
/* Pick a default configuration. This hardly matters anymore. */
|
|
confnr= MIN(ec_instance, EC_CONF_NR-1);
|
|
|
|
ecp= &ec_conf[confnr];
|
|
update_conf(ec, ecp);
|
|
if (ec->mode != EC_ENABLED)
|
|
return;
|
|
|
|
if (!lance_probe(ec, ec_instance))
|
|
{
|
|
printf("%s: No ethernet card found on PCI-BIOS info.\n",
|
|
ec->port_name);
|
|
ec->mode= EC_DISABLED;
|
|
return;
|
|
}
|
|
|
|
/* XXX */ if (ec->ec_linmem == 0) ec->ec_linmem= 0xFFFF0000;
|
|
|
|
ec->flags = ECF_EMPTY;
|
|
ec->eth_stat = empty_stat;
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* update_conf *
|
|
*===========================================================================*/
|
|
static void update_conf(ec, ecp)
|
|
ether_card_t *ec;
|
|
ec_conf_t *ecp;
|
|
{
|
|
long v;
|
|
char eckey[16];
|
|
static char ec_fmt[] = "x:d:x:x";
|
|
|
|
/* Get the default settings and modify them from the environment. */
|
|
strlcpy(eckey, "LANCE0", sizeof(eckey));
|
|
eckey[5] += ec_instance;
|
|
ec->mode= EC_SINK;
|
|
v= ecp->ec_port;
|
|
switch (env_parse(eckey, ec_fmt, 0, &v, 0x0000L, 0xFFFFL))
|
|
{
|
|
case EP_OFF:
|
|
ec->mode= EC_DISABLED;
|
|
break;
|
|
case EP_ON:
|
|
case EP_SET:
|
|
default:
|
|
ec->mode= EC_ENABLED; /* Might become disabled if
|
|
* all probes fail */
|
|
break;
|
|
}
|
|
|
|
ec->ec_port= v;
|
|
|
|
v= ecp->ec_irq | DEI_DEFAULT;
|
|
(void) env_parse(eckey, ec_fmt, 1, &v, 0L, (long) NR_IRQ_VECTORS - 1);
|
|
ec->ec_irq= v;
|
|
|
|
v= ecp->ec_mem;
|
|
(void) env_parse(eckey, ec_fmt, 2, &v, 0L, 0xFFFFFL);
|
|
ec->ec_linmem= v;
|
|
|
|
v= 0;
|
|
(void) env_parse(eckey, ec_fmt, 3, &v, 0x2000L, 0x8000L);
|
|
ec->ec_ramsize= v;
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* ec_init *
|
|
*===========================================================================*/
|
|
static void ec_init(ec)
|
|
ether_card_t *ec;
|
|
{
|
|
int r;
|
|
#if VERBOSE
|
|
int i;
|
|
#endif
|
|
|
|
/* General initialization */
|
|
ec->flags = ECF_EMPTY;
|
|
lance_init_card(ec); /* Get mac_address, etc ...*/
|
|
|
|
ec_confaddr(ec);
|
|
|
|
#if VERBOSE
|
|
printf("%s: Ethernet address ", ec->port_name);
|
|
for (i= 0; i < 6; i++)
|
|
printf("%x%c", ec->mac_address.ea_addr[i],
|
|
i < 5 ? ':' : '\n');
|
|
#endif
|
|
|
|
/* Finish the initialization */
|
|
ec->flags |= ECF_ENABLED;
|
|
|
|
/* Set the interrupt handler */
|
|
ec->ec_hook = ec->ec_irq;
|
|
if ((r=sys_irqsetpolicy(ec->ec_irq, 0, &ec->ec_hook)) != OK)
|
|
printf("lance: error, couldn't set IRQ policy: %d\n", r);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* reply *
|
|
*===========================================================================*/
|
|
static void reply(ec)
|
|
ether_card_t *ec;
|
|
{
|
|
message reply;
|
|
int flags,r;
|
|
|
|
flags = DL_NOFLAGS;
|
|
if (ec->flags & ECF_PACK_SEND)
|
|
flags |= DL_PACK_SEND;
|
|
if (ec->flags & ECF_PACK_RECV)
|
|
flags |= DL_PACK_RECV;
|
|
|
|
reply.m_type = DL_TASK_REPLY;
|
|
reply.DL_FLAGS = flags;
|
|
reply.DL_COUNT = ec->read_s;
|
|
|
|
r = send(ec->client, &reply);
|
|
if (r < 0)
|
|
panic("send failed: %d", r);
|
|
|
|
ec->read_s = 0;
|
|
ec->flags &= ~(ECF_PACK_SEND | ECF_PACK_RECV);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* mess_reply *
|
|
*===========================================================================*/
|
|
static void mess_reply(req, reply_mess)
|
|
message *req;
|
|
message *reply_mess;
|
|
{
|
|
if (send(req->m_source, reply_mess) != OK)
|
|
panic("unable to mess_reply");
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* ec_confaddr *
|
|
*===========================================================================*/
|
|
static void ec_confaddr(ec)
|
|
ether_card_t *ec;
|
|
{
|
|
int i;
|
|
char eakey[16];
|
|
static char eafmt[]= "x:x:x:x:x:x";
|
|
long v;
|
|
|
|
/* User defined ethernet address? */
|
|
strlcpy(eakey, "LANCE0_EA", sizeof(eakey));
|
|
eakey[5] += ec_instance;
|
|
|
|
for (i = 0; i < 6; i++)
|
|
{
|
|
v= ec->mac_address.ea_addr[i];
|
|
if (env_parse(eakey, eafmt, i, &v, 0x00L, 0xFFL) != EP_SET)
|
|
break;
|
|
ec->mac_address.ea_addr[i]= v;
|
|
}
|
|
|
|
if (i != 0 && i != 6)
|
|
{
|
|
/* It's all or nothing; force a panic. */
|
|
(void) env_parse(eakey, "?", 0, &v, 0L, 0L);
|
|
}
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* ec_reinit *
|
|
*===========================================================================*/
|
|
static void ec_reinit(ec)
|
|
ether_card_t *ec;
|
|
{
|
|
int i;
|
|
unsigned short ioaddr = ec->ec_port;
|
|
|
|
/* stop */
|
|
write_csr(ioaddr, LANCE_CSR0, LANCE_CSR0_STOP);
|
|
|
|
/* purge Tx-ring */
|
|
tx_slot_nr = cur_tx_slot_nr = 0;
|
|
for (i=0; i<TX_RING_SIZE; i++)
|
|
{
|
|
lp->tx_ring[i].u.base = 0;
|
|
isstored[i]=0;
|
|
}
|
|
|
|
/* re-init Rx-ring */
|
|
rx_slot_nr = 0;
|
|
for (i=0; i<RX_RING_SIZE; i++)
|
|
{
|
|
lp->rx_ring[i].buf_length = -ETH_FRAME_LEN;
|
|
lp->rx_ring[i].u.addr[3] |= 0x80;
|
|
}
|
|
|
|
/* Set 'Receive Mode' */
|
|
if (ec->flags & ECF_PROMISC)
|
|
{
|
|
write_csr(ioaddr, LANCE_CSR15, LANCE_CSR15_PROM);
|
|
}
|
|
else
|
|
{
|
|
if (ec->flags & (ECF_BROAD | ECF_MULTI))
|
|
{
|
|
write_csr(ioaddr, LANCE_CSR15, 0x0000);
|
|
}
|
|
else
|
|
{
|
|
write_csr(ioaddr, LANCE_CSR15, LANCE_CSR15_DRCVBC);
|
|
}
|
|
}
|
|
|
|
/* start && enable interrupt */
|
|
write_csr(ioaddr, LANCE_CSR0,
|
|
LANCE_CSR0_IDON|LANCE_CSR0_IENA|LANCE_CSR0_STRT);
|
|
|
|
return;
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* ec_check_ints *
|
|
*===========================================================================*/
|
|
static void ec_check_ints(ec)
|
|
ether_card_t *ec;
|
|
{
|
|
int must_restart = 0;
|
|
int check,status;
|
|
int isr = 0x0000;
|
|
unsigned short ioaddr = ec->ec_port;
|
|
|
|
if (!(ec->flags & ECF_ENABLED))
|
|
panic("got premature interrupt");
|
|
|
|
for (;;)
|
|
{
|
|
#if VERBOSE
|
|
printf("ETH: Reading ISR...");
|
|
#endif
|
|
isr = read_csr(ioaddr, LANCE_CSR0);
|
|
if (isr & (LANCE_CSR0_ERR|LANCE_CSR0_RINT|LANCE_CSR0_TINT)) {
|
|
write_csr(ioaddr, LANCE_CSR0,
|
|
isr & ~(LANCE_CSR0_IENA|LANCE_CSR0_TDMD|LANCE_CSR0_STOP
|
|
|LANCE_CSR0_STRT|LANCE_CSR0_INIT) );
|
|
}
|
|
write_csr(ioaddr, LANCE_CSR0,
|
|
LANCE_CSR0_BABL|LANCE_CSR0_CERR|LANCE_CSR0_MISS|LANCE_CSR0_MERR
|
|
|LANCE_CSR0_IDON|LANCE_CSR0_IENA);
|
|
|
|
#define ISR_RST 0x0000
|
|
|
|
if ((isr & (LANCE_CSR0_TINT|LANCE_CSR0_RINT|LANCE_CSR0_MISS
|
|
|LANCE_CSR0_BABL|LANCE_CSR0_ERR)) == 0x0000)
|
|
{
|
|
#if VERBOSE
|
|
printf("OK\n");
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
if (isr & LANCE_CSR0_MISS)
|
|
{
|
|
#if VERBOSE
|
|
printf("RX Missed Frame\n");
|
|
#endif
|
|
ec->eth_stat.ets_recvErr++;
|
|
}
|
|
if ((isr & LANCE_CSR0_BABL) || (isr & LANCE_CSR0_TINT))
|
|
{
|
|
if (isr & LANCE_CSR0_BABL)
|
|
{
|
|
#if VERBOSE
|
|
printf("TX Timeout\n");
|
|
#endif
|
|
ec->eth_stat.ets_sendErr++;
|
|
}
|
|
if (isr & LANCE_CSR0_TINT)
|
|
{
|
|
#if VERBOSE
|
|
printf("TX INT\n");
|
|
#endif
|
|
/* status check: restart if needed. */
|
|
status = lp->tx_ring[cur_tx_slot_nr].u.base;
|
|
|
|
/* ??? */
|
|
if (status & 0x40000000)
|
|
{
|
|
status = lp->tx_ring[cur_tx_slot_nr].misc;
|
|
ec->eth_stat.ets_sendErr++;
|
|
if (status & 0x0400)
|
|
ec->eth_stat.ets_transAb++;
|
|
if (status & 0x0800)
|
|
ec->eth_stat.ets_carrSense++;
|
|
if (status & 0x1000)
|
|
ec->eth_stat.ets_OWC++;
|
|
if (status & 0x4000)
|
|
{
|
|
ec->eth_stat.ets_fifoUnder++;
|
|
must_restart=1;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (status & 0x18000000)
|
|
ec->eth_stat.ets_collision++;
|
|
ec->eth_stat.ets_packetT++;
|
|
}
|
|
}
|
|
/* transmit a packet on the next slot if it exists. */
|
|
check = 0;
|
|
if (isstored[cur_tx_slot_nr]==1)
|
|
{
|
|
/* free the tx-slot just transmitted */
|
|
isstored[cur_tx_slot_nr]=0;
|
|
cur_tx_slot_nr = (cur_tx_slot_nr + 1) & TX_RING_MOD_MASK;
|
|
|
|
/* next tx-slot is ready? */
|
|
if (isstored[cur_tx_slot_nr]==1)
|
|
check=1;
|
|
else
|
|
check=0;
|
|
}
|
|
else
|
|
{
|
|
panic("got premature TX INT..");
|
|
}
|
|
if (check==1)
|
|
{
|
|
lp->tx_ring[cur_tx_slot_nr].u.addr[3] = 0x83;
|
|
write_csr(ioaddr, LANCE_CSR0, LANCE_CSR0_IENA|LANCE_CSR0_TDMD);
|
|
}
|
|
/* we set a buffered message in the slot if it exists. */
|
|
/* and transmit it, if needed. */
|
|
if (ec->flags & ECF_SEND_AVAIL)
|
|
ec_send(ec);
|
|
}
|
|
if (isr & LANCE_CSR0_RINT)
|
|
{
|
|
#if VERBOSE
|
|
printf("RX INT\n");
|
|
#endif
|
|
ec_recv(ec);
|
|
}
|
|
|
|
if (isr & ISR_RST)
|
|
{
|
|
ec->flags = ECF_STOPPED;
|
|
#if VERBOSE
|
|
printf("ISR_RST\n");
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
/* ??? cf. lance driver on linux */
|
|
if (must_restart == 1)
|
|
{
|
|
#if VERBOSE
|
|
printf("ETH: restarting...\n");
|
|
#endif
|
|
/* stop */
|
|
write_csr(ioaddr, LANCE_CSR0, LANCE_CSR0_STOP);
|
|
/* start */
|
|
write_csr(ioaddr, LANCE_CSR0, LANCE_CSR0_STRT);
|
|
}
|
|
}
|
|
|
|
if ((ec->flags & (ECF_READING|ECF_STOPPED)) == (ECF_READING|ECF_STOPPED))
|
|
{
|
|
#if VERBOSE
|
|
printf("ETH: resetting...\n");
|
|
#endif
|
|
ec_reset(ec);
|
|
}
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* ec_reset *
|
|
*===========================================================================*/
|
|
static void ec_reset(ec)
|
|
ether_card_t *ec;
|
|
{
|
|
/* Stop/start the chip, and clear all RX,TX-slots */
|
|
unsigned short ioaddr = ec->ec_port;
|
|
int i;
|
|
|
|
/* stop */
|
|
write_csr(ioaddr, LANCE_CSR0, LANCE_CSR0_STOP);
|
|
/* start */
|
|
write_csr(ioaddr, LANCE_CSR0, LANCE_CSR0_STRT);
|
|
|
|
/* purge Tx-ring */
|
|
tx_slot_nr = cur_tx_slot_nr = 0;
|
|
for (i=0; i<TX_RING_SIZE; i++)
|
|
{
|
|
lp->tx_ring[i].u.base = 0;
|
|
isstored[i]=0;
|
|
}
|
|
|
|
/* re-init Rx-ring */
|
|
rx_slot_nr = 0;
|
|
for (i=0; i<RX_RING_SIZE; i++)
|
|
{
|
|
lp->rx_ring[i].buf_length = -ETH_FRAME_LEN;
|
|
lp->rx_ring[i].u.addr[3] |= 0x80;
|
|
}
|
|
|
|
/* store a buffered message on the slot if exists */
|
|
ec_send(ec);
|
|
ec->flags &= ~ECF_STOPPED;
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* ec_send *
|
|
*===========================================================================*/
|
|
static void ec_send(ec)
|
|
ether_card_t *ec;
|
|
{
|
|
/* from ec_check_ints() or ec_reset(). */
|
|
/* this function proccesses the buffered message. (slot/transmit) */
|
|
if (!(ec->flags & ECF_SEND_AVAIL))
|
|
return;
|
|
|
|
ec->flags &= ~ECF_SEND_AVAIL;
|
|
switch(ec->sendmsg.m_type)
|
|
{
|
|
case DL_WRITEV_S: do_vwrite_s(&ec->sendmsg, TRUE); break;
|
|
default:
|
|
panic("wrong type: %d", ec->sendmsg.m_type);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* do_vread_s *
|
|
*===========================================================================*/
|
|
static void do_vread_s(const message *mp)
|
|
{
|
|
int count, r;
|
|
ether_card_t *ec;
|
|
|
|
ec= &ec_state;
|
|
|
|
ec->client= mp->m_source;
|
|
count = mp->DL_COUNT;
|
|
|
|
r = sys_safecopyfrom(mp->m_source, mp->DL_GRANT, 0,
|
|
(vir_bytes)ec->read_iovec.iod_iovec,
|
|
(count > IOVEC_NR ? IOVEC_NR : count) *
|
|
sizeof(iovec_s_t));
|
|
if (r != OK)
|
|
panic("do_vread_s: sys_safecopyfrom failed: %d", r);
|
|
ec->read_iovec.iod_iovec_s = count;
|
|
ec->read_iovec.iod_proc_nr = mp->m_source;
|
|
ec->read_iovec.iod_grant = (cp_grant_id_t) mp->DL_GRANT;
|
|
ec->read_iovec.iod_iovec_offset = 0;
|
|
|
|
ec->tmp_iovec = ec->read_iovec;
|
|
|
|
ec->flags |= ECF_READING;
|
|
|
|
ec_recv(ec);
|
|
|
|
if ((ec->flags & (ECF_READING|ECF_STOPPED)) == (ECF_READING|ECF_STOPPED))
|
|
ec_reset(ec);
|
|
reply(ec);
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* ec_recv *
|
|
*===========================================================================*/
|
|
static void ec_recv(ec)
|
|
ether_card_t *ec;
|
|
{
|
|
vir_bytes length;
|
|
int packet_processed;
|
|
int status;
|
|
unsigned short ioaddr = ec->ec_port;
|
|
|
|
if ((ec->flags & ECF_READING)==0)
|
|
return;
|
|
if (!(ec->flags & ECF_ENABLED))
|
|
return;
|
|
|
|
/* we check all the received slots until find a properly received packet */
|
|
packet_processed = FALSE;
|
|
while (!packet_processed)
|
|
{
|
|
status = lp->rx_ring[rx_slot_nr].u.base >> 24;
|
|
if ( (status & 0x80) == 0x00 )
|
|
{
|
|
status = lp->rx_ring[rx_slot_nr].u.base >> 24;
|
|
|
|
/* ??? */
|
|
if (status != 0x03)
|
|
{
|
|
if (status & 0x01)
|
|
ec->eth_stat.ets_recvErr++;
|
|
if (status & 0x04)
|
|
ec->eth_stat.ets_fifoOver++;
|
|
if (status & 0x08)
|
|
ec->eth_stat.ets_CRCerr++;
|
|
if (status & 0x10)
|
|
ec->eth_stat.ets_OVW++;
|
|
if (status & 0x20)
|
|
ec->eth_stat.ets_frameAll++;
|
|
length = 0;
|
|
}
|
|
else
|
|
{
|
|
ec->eth_stat.ets_packetR++;
|
|
length = lp->rx_ring[rx_slot_nr].msg_length;
|
|
}
|
|
if (length > 0)
|
|
{
|
|
ec_nic2user(ec, (int)(lp->rbuf[rx_slot_nr]),
|
|
&ec->read_iovec, 0, length);
|
|
|
|
ec->read_s = length;
|
|
ec->flags |= ECF_PACK_RECV;
|
|
ec->flags &= ~ECF_READING;
|
|
packet_processed = TRUE;
|
|
}
|
|
/* set up this slot again, and we move to the next slot */
|
|
lp->rx_ring[rx_slot_nr].buf_length = -ETH_FRAME_LEN;
|
|
lp->rx_ring[rx_slot_nr].u.addr[3] |= 0x80;
|
|
|
|
write_csr(ioaddr, LANCE_CSR0,
|
|
LANCE_CSR0_BABL|LANCE_CSR0_CERR|LANCE_CSR0_MISS
|
|
|LANCE_CSR0_MERR|LANCE_CSR0_IDON|LANCE_CSR0_IENA);
|
|
|
|
rx_slot_nr = (rx_slot_nr + 1) & RX_RING_MOD_MASK;
|
|
}
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* do_vwrite_s *
|
|
*===========================================================================*/
|
|
static void do_vwrite_s(mp, from_int)
|
|
message *mp;
|
|
int from_int;
|
|
{
|
|
int count, check, r;
|
|
ether_card_t *ec;
|
|
unsigned short ioaddr;
|
|
|
|
ec = &ec_state;
|
|
|
|
ec->client= mp->m_source;
|
|
count = mp->DL_COUNT;
|
|
|
|
if (isstored[tx_slot_nr]==1)
|
|
{
|
|
/* all slots are used, so this message is buffered */
|
|
ec->sendmsg= *mp;
|
|
ec->flags |= ECF_SEND_AVAIL;
|
|
reply(ec);
|
|
return;
|
|
}
|
|
|
|
/* convert the message to write_iovec */
|
|
r = sys_safecopyfrom(mp->m_source, mp->DL_GRANT, 0,
|
|
(vir_bytes)ec->write_iovec.iod_iovec,
|
|
(count > IOVEC_NR ? IOVEC_NR : count) *
|
|
sizeof(iovec_s_t));
|
|
if (r != OK)
|
|
panic("do_vwrite_s: sys_safecopyfrom failed: %d", r);
|
|
ec->write_iovec.iod_iovec_s = count;
|
|
ec->write_iovec.iod_proc_nr = mp->m_source;
|
|
ec->write_iovec.iod_grant = mp->DL_GRANT;
|
|
ec->write_iovec.iod_iovec_offset = 0;
|
|
|
|
ec->tmp_iovec = ec->write_iovec;
|
|
ec->write_s = calc_iovec_size(&ec->tmp_iovec);
|
|
|
|
/* copy write_iovec to the slot on DMA address */
|
|
ec_user2nic(ec, &ec->write_iovec, 0,
|
|
(int)(lp->tbuf[tx_slot_nr]), ec->write_s);
|
|
/* set-up for transmitting, and transmit it if needed. */
|
|
lp->tx_ring[tx_slot_nr].buf_length = -ec->write_s;
|
|
lp->tx_ring[tx_slot_nr].misc = 0x0;
|
|
lp->tx_ring[tx_slot_nr].u.base
|
|
= virt_to_bus(lp->tbuf[tx_slot_nr]) & 0xffffff;
|
|
isstored[tx_slot_nr]=1;
|
|
if (cur_tx_slot_nr == tx_slot_nr)
|
|
check=1;
|
|
else
|
|
check=0;
|
|
tx_slot_nr = (tx_slot_nr + 1) & TX_RING_MOD_MASK;
|
|
|
|
if (check == 1)
|
|
{
|
|
ioaddr = ec->ec_port;
|
|
lp->tx_ring[cur_tx_slot_nr].u.addr[3] = 0x83;
|
|
write_csr(ioaddr, LANCE_CSR0, LANCE_CSR0_IENA|LANCE_CSR0_TDMD);
|
|
}
|
|
|
|
ec->flags |= ECF_PACK_SEND;
|
|
|
|
/* reply by calling do_int() if this function is called from interrupt. */
|
|
if (from_int)
|
|
return;
|
|
reply(ec);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* ec_user2nic *
|
|
*===========================================================================*/
|
|
static void ec_user2nic(ec, iovp, offset, nic_addr, count)
|
|
ether_card_t *ec;
|
|
iovec_dat_t *iovp;
|
|
vir_bytes offset;
|
|
int nic_addr;
|
|
vir_bytes count;
|
|
{
|
|
int bytes, i, r;
|
|
|
|
i= 0;
|
|
while (count > 0)
|
|
{
|
|
if (i >= IOVEC_NR)
|
|
{
|
|
ec_next_iovec(iovp);
|
|
i= 0;
|
|
continue;
|
|
}
|
|
if (offset >= iovp->iod_iovec[i].iov_size)
|
|
{
|
|
offset -= iovp->iod_iovec[i].iov_size;
|
|
i++;
|
|
continue;
|
|
}
|
|
bytes = iovp->iod_iovec[i].iov_size - offset;
|
|
if (bytes > count)
|
|
bytes = count;
|
|
|
|
if ( (r=sys_safecopyfrom(iovp->iod_proc_nr,
|
|
iovp->iod_iovec[i].iov_grant, offset,
|
|
nic_addr, bytes )) != OK )
|
|
panic("ec_user2nic: sys_safecopyfrom failed: %d", r);
|
|
|
|
count -= bytes;
|
|
nic_addr += bytes;
|
|
offset += bytes;
|
|
}
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* ec_nic2user *
|
|
*===========================================================================*/
|
|
static void ec_nic2user(ec, nic_addr, iovp, offset, count)
|
|
ether_card_t *ec;
|
|
int nic_addr;
|
|
iovec_dat_t *iovp;
|
|
vir_bytes offset;
|
|
vir_bytes count;
|
|
{
|
|
int bytes, i, r;
|
|
|
|
i= 0;
|
|
while (count > 0)
|
|
{
|
|
if (i >= IOVEC_NR)
|
|
{
|
|
ec_next_iovec(iovp);
|
|
i= 0;
|
|
continue;
|
|
}
|
|
if (offset >= iovp->iod_iovec[i].iov_size)
|
|
{
|
|
offset -= iovp->iod_iovec[i].iov_size;
|
|
i++;
|
|
continue;
|
|
}
|
|
bytes = iovp->iod_iovec[i].iov_size - offset;
|
|
if (bytes > count)
|
|
bytes = count;
|
|
if ( (r=sys_safecopyto( iovp->iod_proc_nr, iovp->iod_iovec[i].iov_grant,
|
|
offset, nic_addr, bytes )) != OK )
|
|
panic("ec_nic2user: sys_safecopyto failed: %d", r);
|
|
|
|
count -= bytes;
|
|
nic_addr += bytes;
|
|
offset += bytes;
|
|
}
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* calc_iovec_size *
|
|
*===========================================================================*/
|
|
static int calc_iovec_size(iovec_dat_t *iovp)
|
|
{
|
|
int size,i;
|
|
|
|
size = i = 0;
|
|
|
|
while (i < iovp->iod_iovec_s)
|
|
{
|
|
if (i >= IOVEC_NR)
|
|
{
|
|
ec_next_iovec(iovp);
|
|
i= 0;
|
|
continue;
|
|
}
|
|
size += iovp->iod_iovec[i].iov_size;
|
|
i++;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* ec_next_iovec *
|
|
*===========================================================================*/
|
|
static void ec_next_iovec(iovp)
|
|
iovec_dat_t *iovp;
|
|
{
|
|
int r;
|
|
|
|
iovp->iod_iovec_s -= IOVEC_NR;
|
|
iovp->iod_iovec_offset += IOVEC_NR * sizeof(iovec_s_t);
|
|
|
|
r = sys_safecopyfrom(iovp->iod_proc_nr, iovp->iod_grant,
|
|
iovp->iod_iovec_offset,
|
|
(vir_bytes)iovp->iod_iovec,
|
|
(iovp->iod_iovec_s > IOVEC_NR ?
|
|
IOVEC_NR : iovp->iod_iovec_s) *
|
|
sizeof(iovec_s_t));
|
|
if (r != OK)
|
|
panic("ec_next_iovec: sys_safecopyfrom failed: %d", r);
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* do_getstat_s *
|
|
*===========================================================================*/
|
|
static void do_getstat_s(mp)
|
|
message *mp;
|
|
{
|
|
int r;
|
|
ether_card_t *ec;
|
|
|
|
ec= &ec_state;
|
|
|
|
r = sys_safecopyto(mp->m_source, mp->DL_GRANT, 0,
|
|
(vir_bytes)&ec->eth_stat, sizeof(ec->eth_stat));
|
|
|
|
if (r != OK)
|
|
panic("do_getstat_s: sys_safecopyto failed: %d", r);
|
|
|
|
mp->m_type= DL_STAT_REPLY;
|
|
r= send(mp->m_source, mp);
|
|
if (r != OK)
|
|
panic("do_getstat_s: send failed: %d", r);
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* lance_stop *
|
|
*===========================================================================*/
|
|
static void lance_stop(ec)
|
|
ether_card_t *ec;
|
|
{
|
|
unsigned short ioaddr;
|
|
|
|
if (!(ec->flags & ECF_ENABLED))
|
|
return;
|
|
|
|
ioaddr = ec->ec_port;
|
|
|
|
/* stop */
|
|
write_csr(ioaddr, LANCE_CSR0, LANCE_CSR0_STOP);
|
|
|
|
/* Reset */
|
|
in_word(ioaddr+LANCE_RESET);
|
|
|
|
ec->flags = ECF_EMPTY;
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* getAddressing *
|
|
*===========================================================================*/
|
|
static void getAddressing(devind, ec)
|
|
int devind;
|
|
ether_card_t *ec;
|
|
{
|
|
unsigned int membase, ioaddr;
|
|
int reg, irq;
|
|
|
|
for (reg = PCI_BAR; reg <= PCI_BAR_6; reg += 4)
|
|
{
|
|
ioaddr = pci_attr_r32(devind, reg);
|
|
|
|
if ((ioaddr & PCI_BAR_IO_MASK) == 0 || (ioaddr & PCI_BAR_IO) == 0)
|
|
continue;
|
|
/* Strip the I/O address out of the returned value */
|
|
ioaddr &= PCI_BAR_IO_MASK;
|
|
/* Get the memory base address */
|
|
membase = pci_attr_r32(devind, PCI_BAR_2);
|
|
/* KK: Get the IRQ number */
|
|
irq = pci_attr_r8(devind, PCI_IPR);
|
|
if (irq)
|
|
irq = pci_attr_r8(devind, PCI_ILR);
|
|
|
|
ec->ec_linmem = membase;
|
|
ec->ec_port = ioaddr;
|
|
ec->ec_irq = irq;
|
|
}
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* lance_probe *
|
|
*===========================================================================*/
|
|
static int lance_probe(ec, skip)
|
|
ether_card_t *ec;
|
|
int skip;
|
|
{
|
|
unsigned short pci_cmd;
|
|
unsigned short ioaddr;
|
|
int lance_version, chip_version;
|
|
int devind, r;
|
|
u16_t vid, did;
|
|
|
|
r= pci_first_dev(&devind, &vid, &did);
|
|
if (r == 0)
|
|
return 0;
|
|
|
|
while (skip--)
|
|
{
|
|
r= pci_next_dev(&devind, &vid, &did);
|
|
if (!r)
|
|
return 0;
|
|
}
|
|
|
|
pci_reserve(devind);
|
|
|
|
getAddressing(devind, ec);
|
|
|
|
|
|
/* ===== Bus Master ? ===== */
|
|
pci_cmd = pci_attr_r32(devind, PCI_CR);
|
|
if (!(pci_cmd & PCI_CR_MAST_EN)) {
|
|
pci_cmd |= PCI_CR_MAST_EN;
|
|
pci_attr_w32(devind, PCI_CR, pci_cmd);
|
|
}
|
|
|
|
/* ===== Probe Details ===== */
|
|
ioaddr = ec->ec_port;
|
|
|
|
/* Reset */
|
|
in_word(ioaddr+LANCE_RESET);
|
|
|
|
if (read_csr(ioaddr, LANCE_CSR0) != LANCE_CSR0_STOP)
|
|
{
|
|
ec->mode=EC_DISABLED;
|
|
}
|
|
|
|
/* Probe Chip Version */
|
|
out_word(ioaddr+LANCE_ADDR, 88); /* Get the version of the chip */
|
|
if (in_word(ioaddr+LANCE_ADDR) != 88)
|
|
lance_version = 0;
|
|
else
|
|
{
|
|
chip_version = read_csr(ioaddr, LANCE_CSR88);
|
|
chip_version |= read_csr(ioaddr, LANCE_CSR89) << 16;
|
|
|
|
if ((chip_version & 0xfff) != 0x3)
|
|
{
|
|
ec->mode=EC_DISABLED;
|
|
}
|
|
chip_version = (chip_version >> 12) & 0xffff;
|
|
for (lance_version = 1; chip_table[lance_version].id_number != 0;
|
|
++lance_version)
|
|
if (chip_table[lance_version].id_number == chip_version)
|
|
break;
|
|
}
|
|
|
|
#if VERBOSE
|
|
printf("%s: %s at %X:%d\n",
|
|
ec->port_name, chip_table[lance_version].name,
|
|
ec->ec_port, ec->ec_irq);
|
|
#endif
|
|
|
|
return lance_version;
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* lance_init_card *
|
|
*===========================================================================*/
|
|
static void lance_init_card(ec)
|
|
ether_card_t *ec;
|
|
{
|
|
int i;
|
|
Address l = (vir_bytes)lance_buf;
|
|
unsigned short ioaddr = ec->ec_port;
|
|
|
|
/* ============= setup init_block(cf. lance_probe1) ================ */
|
|
/* make sure data structure is 8-byte aligned and below 16MB (for DMA) */
|
|
|
|
lp = (struct lance_interface *)l;
|
|
|
|
/* disable Tx and Rx */
|
|
lp->init_block.mode = LANCE_CSR15_DTX|LANCE_CSR15_DRX;
|
|
lp->init_block.filter[0] = lp->init_block.filter[1] = 0x0;
|
|
/* using multiple Rx/Tx buffer */
|
|
lp->init_block.rx_ring
|
|
= (virt_to_bus(&lp->rx_ring) & 0xffffff) | RX_RING_LEN_BITS;
|
|
lp->init_block.tx_ring
|
|
= (virt_to_bus(&lp->tx_ring) & 0xffffff) | TX_RING_LEN_BITS;
|
|
|
|
l = virt_to_bus(&lp->init_block);
|
|
write_csr(ioaddr, LANCE_CSR1, (unsigned short)l);
|
|
write_csr(ioaddr, LANCE_CSR2, (unsigned short)(l >> 16));
|
|
write_csr(ioaddr, LANCE_CSR4,
|
|
LANCE_CSR4_APAD_XMT|LANCE_CSR4_MFCOM|LANCE_CSR4_RCVCCOM
|
|
|LANCE_CSR4_TXSTRTM|LANCE_CSR4_JABM);
|
|
|
|
/* ============= Get MAC address (cf. lance_probe1) ================ */
|
|
for (i = 0; i < 6; ++i)
|
|
ec->mac_address.ea_addr[i]=in_byte(ioaddr+LANCE_ETH_ADDR+i);
|
|
|
|
/* ============ (re)start init_block(cf. lance_reset) =============== */
|
|
/* Reset the LANCE */
|
|
(void)in_word(ioaddr+LANCE_RESET);
|
|
|
|
/* ----- Re-initialize the LANCE ----- */
|
|
/* Set station address */
|
|
for (i = 0; i < 6; ++i)
|
|
lp->init_block.phys_addr[i] = ec->mac_address.ea_addr[i];
|
|
/* Preset the receive ring headers */
|
|
for (i=0; i<RX_RING_SIZE; i++)
|
|
{
|
|
lp->rx_ring[i].buf_length = -ETH_FRAME_LEN;
|
|
/* OWN */
|
|
lp->rx_ring[i].u.base = virt_to_bus(lp->rbuf[i]) & 0xffffff;
|
|
/* we set the top byte as the very last thing */
|
|
lp->rx_ring[i].u.addr[3] = 0x80;
|
|
}
|
|
/* Preset the transmitting ring headers */
|
|
for (i=0; i<TX_RING_SIZE; i++)
|
|
{
|
|
lp->tx_ring[i].u.base = 0;
|
|
isstored[i] = 0;
|
|
}
|
|
/* enable Rx and Tx */
|
|
lp->init_block.mode = 0x0;
|
|
|
|
l = (Address)virt_to_bus(&lp->init_block);
|
|
write_csr(ioaddr, LANCE_CSR1, (short)l);
|
|
write_csr(ioaddr, LANCE_CSR2, (short)(l >> 16));
|
|
write_csr(ioaddr, LANCE_CSR4,
|
|
LANCE_CSR4_APAD_XMT|LANCE_CSR4_MFCOM|LANCE_CSR4_RCVCCOM
|
|
|LANCE_CSR4_TXSTRTM|LANCE_CSR4_JABM);
|
|
|
|
/* ----- start when init done. ----- */
|
|
/* stop */
|
|
write_csr(ioaddr, LANCE_CSR0, LANCE_CSR0_STOP);
|
|
/* init */
|
|
write_csr(ioaddr, LANCE_CSR0, LANCE_CSR0_INIT);
|
|
/* poll for IDON */
|
|
for (i = 10000; i > 0; --i)
|
|
if (read_csr(ioaddr, LANCE_CSR0) & LANCE_CSR0_IDON)
|
|
break;
|
|
|
|
/* Set 'Multicast Table' */
|
|
for (i=0;i<4;++i)
|
|
{
|
|
write_csr(ioaddr, LANCE_CSR8 + i, 0xffff);
|
|
}
|
|
|
|
/* Set 'Receive Mode' */
|
|
if (ec->flags & ECF_PROMISC)
|
|
{
|
|
write_csr(ioaddr, LANCE_CSR15, LANCE_CSR15_PROM);
|
|
}
|
|
else
|
|
{
|
|
if (ec->flags & (ECF_BROAD | ECF_MULTI))
|
|
{
|
|
write_csr(ioaddr, LANCE_CSR15, 0x0000);
|
|
}
|
|
else
|
|
{
|
|
write_csr(ioaddr, LANCE_CSR15, LANCE_CSR15_DRCVBC);
|
|
}
|
|
}
|
|
|
|
/* start && enable interrupt */
|
|
write_csr(ioaddr, LANCE_CSR0,
|
|
LANCE_CSR0_IDON|LANCE_CSR0_IENA|LANCE_CSR0_STRT);
|
|
|
|
return;
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* in_byte *
|
|
*===========================================================================*/
|
|
static u8_t in_byte(port_t port)
|
|
{
|
|
int r;
|
|
u32_t value;
|
|
|
|
r= sys_inb(port, &value);
|
|
if (r != OK)
|
|
panic("sys_inb failed: %d", r);
|
|
return value;
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* in_word *
|
|
*===========================================================================*/
|
|
static u16_t in_word(port_t port)
|
|
{
|
|
int r;
|
|
u32_t value;
|
|
|
|
r= sys_inw(port, &value);
|
|
if (r != OK)
|
|
panic("sys_inw failed: %d", r);
|
|
return value;
|
|
}
|
|
|
|
|
|
/*===========================================================================*
|
|
* out_word *
|
|
*===========================================================================*/
|
|
static void out_word(port_t port, u16_t value)
|
|
{
|
|
int r;
|
|
|
|
r= sys_outw(port, value);
|
|
if (r != OK)
|
|
panic("sys_outw failed: %d", r);
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* read_csr *
|
|
*===========================================================================*/
|
|
static u16_t read_csr(port_t ioaddr, u16_t csrno)
|
|
{
|
|
out_word(ioaddr+LANCE_ADDR, csrno);
|
|
return in_word(ioaddr+LANCE_DATA);
|
|
}
|
|
|
|
/*===========================================================================*
|
|
* write_csr *
|
|
*===========================================================================*/
|
|
static void write_csr(port_t ioaddr, u16_t csrno, u16_t value)
|
|
{
|
|
out_word(ioaddr+LANCE_ADDR, csrno);
|
|
out_word(ioaddr+LANCE_DATA, value);
|
|
}
|