270 lines
7.1 KiB
C
270 lines
7.1 KiB
C
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/*
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* Copyright(c) 2007 Atheros Corporation. All rights reserved.
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*
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* Derived from Intel e1000 driver
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* Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <linux/netdevice.h>
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#include "atl1e.h"
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/* This is the only thing that needs to be changed to adjust the
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* maximum number of ports that the driver can manage.
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*/
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#define ATL1E_MAX_NIC 32
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#define OPTION_UNSET -1
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#define OPTION_DISABLED 0
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#define OPTION_ENABLED 1
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/* All parameters are treated the same, as an integer array of values.
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* This macro just reduces the need to repeat the same declaration code
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* over and over (plus this helps to avoid typo bugs).
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*/
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#define ATL1E_PARAM_INIT { [0 ... ATL1E_MAX_NIC] = OPTION_UNSET }
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#define ATL1E_PARAM(x, desc) \
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static int x[ATL1E_MAX_NIC + 1] = ATL1E_PARAM_INIT; \
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static unsigned int num_##x; \
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module_param_array_named(x, x, int, &num_##x, 0); \
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MODULE_PARM_DESC(x, desc);
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/* Transmit Memory count
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*
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* Valid Range: 64-2048
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*
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* Default Value: 128
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*/
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#define ATL1E_MIN_TX_DESC_CNT 32
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#define ATL1E_MAX_TX_DESC_CNT 1020
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#define ATL1E_DEFAULT_TX_DESC_CNT 128
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ATL1E_PARAM(tx_desc_cnt, "Transmit description count");
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/* Receive Memory Block Count
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*
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* Valid Range: 16-512
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*
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* Default Value: 128
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*/
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#define ATL1E_MIN_RX_MEM_SIZE 8 /* 8KB */
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#define ATL1E_MAX_RX_MEM_SIZE 1024 /* 1MB */
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#define ATL1E_DEFAULT_RX_MEM_SIZE 256 /* 128KB */
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ATL1E_PARAM(rx_mem_size, "memory size of rx buffer(KB)");
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/* User Specified MediaType Override
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*
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* Valid Range: 0-5
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* - 0 - auto-negotiate at all supported speeds
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* - 1 - only link at 100Mbps Full Duplex
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* - 2 - only link at 100Mbps Half Duplex
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* - 3 - only link at 10Mbps Full Duplex
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* - 4 - only link at 10Mbps Half Duplex
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* Default Value: 0
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*/
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ATL1E_PARAM(media_type, "MediaType Select");
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/* Interrupt Moderate Timer in units of 2 us
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*
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* Valid Range: 10-65535
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*
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* Default Value: 45000(90ms)
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*/
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#define INT_MOD_DEFAULT_CNT 100 /* 200us */
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#define INT_MOD_MAX_CNT 65000
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#define INT_MOD_MIN_CNT 50
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ATL1E_PARAM(int_mod_timer, "Interrupt Moderator Timer");
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#define AUTONEG_ADV_DEFAULT 0x2F
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#define AUTONEG_ADV_MASK 0x2F
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#define FLOW_CONTROL_DEFAULT FLOW_CONTROL_FULL
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#define FLASH_VENDOR_DEFAULT 0
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#define FLASH_VENDOR_MIN 0
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#define FLASH_VENDOR_MAX 2
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struct atl1e_option {
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enum { enable_option, range_option, list_option } type;
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char *name;
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char *err;
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int def;
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union {
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struct { /* range_option info */
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int min;
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int max;
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} r;
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struct { /* list_option info */
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int nr;
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struct atl1e_opt_list { int i; char *str; } *p;
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} l;
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} arg;
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};
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static int atl1e_validate_option(int *value, struct atl1e_option *opt,
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struct atl1e_adapter *adapter)
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{
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if (*value == OPTION_UNSET) {
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*value = opt->def;
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return 0;
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}
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switch (opt->type) {
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case enable_option:
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switch (*value) {
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case OPTION_ENABLED:
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netdev_info(adapter->netdev,
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"%s Enabled\n", opt->name);
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return 0;
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case OPTION_DISABLED:
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netdev_info(adapter->netdev,
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"%s Disabled\n", opt->name);
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return 0;
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}
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break;
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case range_option:
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if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
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netdev_info(adapter->netdev, "%s set to %i\n",
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opt->name, *value);
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return 0;
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}
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break;
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case list_option:{
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int i;
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struct atl1e_opt_list *ent;
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for (i = 0; i < opt->arg.l.nr; i++) {
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ent = &opt->arg.l.p[i];
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if (*value == ent->i) {
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if (ent->str[0] != '\0')
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netdev_info(adapter->netdev,
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"%s\n", ent->str);
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return 0;
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}
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}
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break;
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}
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default:
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BUG();
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}
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netdev_info(adapter->netdev, "Invalid %s specified (%i) %s\n",
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opt->name, *value, opt->err);
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*value = opt->def;
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return -1;
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}
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/**
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* atl1e_check_options - Range Checking for Command Line Parameters
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* @adapter: board private structure
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*
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* This routine checks all command line parameters for valid user
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* input. If an invalid value is given, or if no user specified
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* value exists, a default value is used. The final value is stored
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* in a variable in the adapter structure.
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*/
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void atl1e_check_options(struct atl1e_adapter *adapter)
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{
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int bd = adapter->bd_number;
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if (bd >= ATL1E_MAX_NIC) {
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netdev_notice(adapter->netdev,
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"no configuration for board #%i\n", bd);
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netdev_notice(adapter->netdev,
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"Using defaults for all values\n");
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}
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{ /* Transmit Ring Size */
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struct atl1e_option opt = {
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.type = range_option,
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.name = "Transmit Ddescription Count",
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.err = "using default of "
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__MODULE_STRING(ATL1E_DEFAULT_TX_DESC_CNT),
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.def = ATL1E_DEFAULT_TX_DESC_CNT,
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.arg = { .r = { .min = ATL1E_MIN_TX_DESC_CNT,
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.max = ATL1E_MAX_TX_DESC_CNT} }
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};
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int val;
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if (num_tx_desc_cnt > bd) {
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val = tx_desc_cnt[bd];
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atl1e_validate_option(&val, &opt, adapter);
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adapter->tx_ring.count = (u16) val & 0xFFFC;
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} else
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adapter->tx_ring.count = (u16)opt.def;
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}
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{ /* Receive Memory Block Count */
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struct atl1e_option opt = {
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.type = range_option,
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.name = "Memory size of rx buffer(KB)",
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.err = "using default of "
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__MODULE_STRING(ATL1E_DEFAULT_RX_MEM_SIZE),
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.def = ATL1E_DEFAULT_RX_MEM_SIZE,
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.arg = { .r = { .min = ATL1E_MIN_RX_MEM_SIZE,
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.max = ATL1E_MAX_RX_MEM_SIZE} }
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};
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int val;
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if (num_rx_mem_size > bd) {
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val = rx_mem_size[bd];
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atl1e_validate_option(&val, &opt, adapter);
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adapter->rx_ring.page_size = (u32)val * 1024;
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} else {
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adapter->rx_ring.page_size = (u32)opt.def * 1024;
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}
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}
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{ /* Interrupt Moderate Timer */
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struct atl1e_option opt = {
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.type = range_option,
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.name = "Interrupt Moderate Timer",
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.err = "using default of "
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__MODULE_STRING(INT_MOD_DEFAULT_CNT),
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.def = INT_MOD_DEFAULT_CNT,
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.arg = { .r = { .min = INT_MOD_MIN_CNT,
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.max = INT_MOD_MAX_CNT} }
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} ;
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int val;
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if (num_int_mod_timer > bd) {
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val = int_mod_timer[bd];
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atl1e_validate_option(&val, &opt, adapter);
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adapter->hw.imt = (u16) val;
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} else
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adapter->hw.imt = (u16)(opt.def);
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}
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{ /* MediaType */
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struct atl1e_option opt = {
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.type = range_option,
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.name = "Speed/Duplex Selection",
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.err = "using default of "
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__MODULE_STRING(MEDIA_TYPE_AUTO_SENSOR),
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.def = MEDIA_TYPE_AUTO_SENSOR,
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.arg = { .r = { .min = MEDIA_TYPE_AUTO_SENSOR,
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.max = MEDIA_TYPE_10M_HALF} }
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} ;
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int val;
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if (num_media_type > bd) {
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val = media_type[bd];
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atl1e_validate_option(&val, &opt, adapter);
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adapter->hw.media_type = (u16) val;
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} else
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adapter->hw.media_type = (u16)(opt.def);
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}
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}
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