// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright ( c ) 2007 Atheros Corporation . All rights reserved .
*
* Derived from Intel e1000 driver
* Copyright ( c ) 1999 - 2005 Intel Corporation . All rights reserved .
*/
#include <linux/netdevice.h>
#include "atl1e.h"
/* This is the only thing that needs to be changed to adjust the
* maximum number of ports that the driver can manage .
*/
#define ATL1E_MAX_NIC 32
#define OPTION_UNSET -1
#define OPTION_DISABLED 0
#define OPTION_ENABLED 1
/* All parameters are treated the same, as an integer array of values.
* This macro just reduces the need to repeat the same declaration code
* over and over ( plus this helps to avoid typo bugs ) .
*/
#define ATL1E_PARAM_INIT { [0 ... ATL1E_MAX_NIC] = OPTION_UNSET }
#define ATL1E_PARAM(x, desc) \
static int x[ATL1E_MAX_NIC + 1 ] = ATL1E_PARAM_INIT; \
static unsigned int num_## x; \
module_param_array_named(x, x, int , &num_## x, 0 ); \
MODULE_PARM_DESC(x, desc);
/* Transmit Memory count
*
* Valid Range : 64 - 2048
*
* Default Value : 128
*/
#define ATL1E_MIN_TX_DESC_CNT 32
#define ATL1E_MAX_TX_DESC_CNT 1020
#define ATL1E_DEFAULT_TX_DESC_CNT 128
ATL1E_PARAM(tx_desc_cnt, "Transmit description count" );
/* Receive Memory Block Count
*
* Valid Range : 16 - 512
*
* Default Value : 128
*/
#define ATL1E_MIN_RX_MEM_SIZE 8 /* 8KB */
#define ATL1E_MAX_RX_MEM_SIZE 1024 /* 1MB */
#define ATL1E_DEFAULT_RX_MEM_SIZE 256 /* 128KB */
ATL1E_PARAM(rx_mem_size, "memory size of rx buffer(KB)" );
/* User Specified MediaType Override
*
* Valid Range : 0 - 5
* - 0 - auto - negotiate at all supported speeds
* - 1 - only link at 100 Mbps Full Duplex
* - 2 - only link at 100 Mbps Half Duplex
* - 3 - only link at 10 Mbps Full Duplex
* - 4 - only link at 10 Mbps Half Duplex
* Default Value : 0
*/
ATL1E_PARAM(media_type, "MediaType Select" );
/* Interrupt Moderate Timer in units of 2 us
*
* Valid Range : 10 - 65535
*
* Default Value : 45000 ( 90 ms )
*/
#define INT_MOD_DEFAULT_CNT 100 /* 200us */
#define INT_MOD_MAX_CNT 65000
#define INT_MOD_MIN_CNT 50
ATL1E_PARAM(int_mod_timer, "Interrupt Moderator Timer" );
#define AUTONEG_ADV_DEFAULT 0 x2F
#define AUTONEG_ADV_MASK 0 x2F
#define FLOW_CONTROL_DEFAULT FLOW_CONTROL_FULL
#define FLASH_VENDOR_DEFAULT 0
#define FLASH_VENDOR_MIN 0
#define FLASH_VENDOR_MAX 2
struct atl1e_option {
enum { enable_option, range_option, list_option } type;
char *name;
char *err;
int def;
union {
struct { /* range_option info */
int min;
int max;
} r;
struct { /* list_option info */
int nr;
struct atl1e_opt_list { int i; char *str; } *p;
} l;
} arg;
};
static int atl1e_validate_option(int *value, struct atl1e_option *opt,
struct atl1e_adapter *adapter)
{
if (*value == OPTION_UNSET) {
*value = opt->def;
return 0 ;
}
switch (opt->type) {
case enable_option:
switch (*value) {
case OPTION_ENABLED:
netdev_info(adapter->netdev,
"%s Enabled\n" , opt->name);
return 0 ;
case OPTION_DISABLED:
netdev_info(adapter->netdev,
"%s Disabled\n" , opt->name);
return 0 ;
}
break ;
case range_option:
if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
netdev_info(adapter->netdev, "%s set to %i\n" ,
opt->name, *value);
return 0 ;
}
break ;
case list_option:{
int i;
struct atl1e_opt_list *ent;
for (i = 0 ; i < opt->arg.l.nr; i++) {
ent = &opt->arg.l.p[i];
if (*value == ent->i) {
if (ent->str[0 ] != '\0' )
netdev_info(adapter->netdev,
"%s\n" , ent->str);
return 0 ;
}
}
break ;
}
default :
BUG();
}
netdev_info(adapter->netdev, "Invalid %s specified (%i) %s\n" ,
opt->name, *value, opt->err);
*value = opt->def;
return -1 ;
}
/**
* atl1e_check_options - Range Checking for Command Line Parameters
* @ adapter : board private structure
*
* This routine checks all command line parameters for valid user
* input . If an invalid value is given , or if no user specified
* value exists , a default value is used . The final value is stored
* in a variable in the adapter structure .
*/
void atl1e_check_options(struct atl1e_adapter *adapter)
{
int bd = adapter->bd_number;
if (bd >= ATL1E_MAX_NIC) {
netdev_notice(adapter->netdev,
"no configuration for board #%i\n" , bd);
netdev_notice(adapter->netdev,
"Using defaults for all values\n" );
}
{ /* Transmit Ring Size */
struct atl1e_option opt = {
.type = range_option,
.name = "Transmit Ddescription Count" ,
.err = "using default of "
__MODULE_STRING(ATL1E_DEFAULT_TX_DESC_CNT),
.def = ATL1E_DEFAULT_TX_DESC_CNT,
.arg = { .r = { .min = ATL1E_MIN_TX_DESC_CNT,
.max = ATL1E_MAX_TX_DESC_CNT} }
};
int val;
if (num_tx_desc_cnt > bd) {
val = tx_desc_cnt[bd];
atl1e_validate_option(&val, &opt, adapter);
adapter->tx_ring.count = (u16) val & 0 xFFFC;
} else
adapter->tx_ring.count = (u16)opt.def;
}
{ /* Receive Memory Block Count */
struct atl1e_option opt = {
.type = range_option,
.name = "Memory size of rx buffer(KB)" ,
.err = "using default of "
__MODULE_STRING(ATL1E_DEFAULT_RX_MEM_SIZE),
.def = ATL1E_DEFAULT_RX_MEM_SIZE,
.arg = { .r = { .min = ATL1E_MIN_RX_MEM_SIZE,
.max = ATL1E_MAX_RX_MEM_SIZE} }
};
int val;
if (num_rx_mem_size > bd) {
val = rx_mem_size[bd];
atl1e_validate_option(&val, &opt, adapter);
adapter->rx_ring.page_size = (u32)val * 1024 ;
} else {
adapter->rx_ring.page_size = (u32)opt.def * 1024 ;
}
}
{ /* Interrupt Moderate Timer */
struct atl1e_option opt = {
.type = range_option,
.name = "Interrupt Moderate Timer" ,
.err = "using default of "
__MODULE_STRING(INT_MOD_DEFAULT_CNT),
.def = INT_MOD_DEFAULT_CNT,
.arg = { .r = { .min = INT_MOD_MIN_CNT,
.max = INT_MOD_MAX_CNT} }
} ;
int val;
if (num_int_mod_timer > bd) {
val = int_mod_timer[bd];
atl1e_validate_option(&val, &opt, adapter);
adapter->hw.imt = (u16) val;
} else
adapter->hw.imt = (u16)(opt.def);
}
{ /* MediaType */
struct atl1e_option opt = {
.type = range_option,
.name = "Speed/Duplex Selection" ,
.err = "using default of "
__MODULE_STRING(MEDIA_TYPE_AUTO_SENSOR),
.def = MEDIA_TYPE_AUTO_SENSOR,
.arg = { .r = { .min = MEDIA_TYPE_AUTO_SENSOR,
.max = MEDIA_TYPE_10M_HALF} }
} ;
int val;
if (num_media_type > bd) {
val = media_type[bd];
atl1e_validate_option(&val, &opt, adapter);
adapter->hw.media_type = (u16) val;
} else
adapter->hw.media_type = (u16)(opt.def);
}
}
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