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/*
* Copyright (C) 1999 - 2010 Intel Corporation.
* Copyright (C) 2010 OKI SEMICONDUCTOR Co., LTD.
*
* This code was derived from the Intel e1000e Linux driver.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
#include "pch_gbe.h"
#include <linux/module.h> /* for __MODULE_STRING */
#define OPTION_UNSET -1
#define OPTION_DISABLED 0
#define OPTION_ENABLED 1
/**
* TxDescriptors - Transmit Descriptor Count
* @Valid Range: PCH_GBE_MIN_TXD - PCH_GBE_MAX_TXD
* @Default Value: PCH_GBE_DEFAULT_TXD
*/
static int TxDescriptors = OPTION_UNSET;
module_param(TxDescriptors, int, 0);
MODULE_PARM_DESC(TxDescriptors, "Number of transmit descriptors");
/**
* RxDescriptors -Receive Descriptor Count
* @Valid Range: PCH_GBE_MIN_RXD - PCH_GBE_MAX_RXD
* @Default Value: PCH_GBE_DEFAULT_RXD
*/
static int RxDescriptors = OPTION_UNSET;
module_param(RxDescriptors, int, 0);
MODULE_PARM_DESC(RxDescriptors, "Number of receive descriptors");
/**
* Speed - User Specified Speed Override
* @Valid Range: 0, 10, 100, 1000
* - 0: auto-negotiate at all supported speeds
* - 10: only link at 10 Mbps
* - 100: only link at 100 Mbps
* - 1000: only link at 1000 Mbps
* @Default Value: 0
*/
static int Speed = OPTION_UNSET;
module_param(Speed, int, 0);
MODULE_PARM_DESC(Speed, "Speed setting");
/**
* Duplex - User Specified Duplex Override
* @Valid Range: 0-2
* - 0: auto-negotiate for duplex
* - 1: only link at half duplex
* - 2: only link at full duplex
* @Default Value: 0
*/
static int Duplex = OPTION_UNSET;
module_param(Duplex, int, 0);
MODULE_PARM_DESC(Duplex, "Duplex setting");
#define HALF_DUPLEX 1
#define FULL_DUPLEX 2
/**
* AutoNeg - Auto-negotiation Advertisement Override
* @Valid Range: 0x01-0x0F, 0x20-0x2F
*
* The AutoNeg value is a bit mask describing which speed and duplex
* combinations should be advertised during auto-negotiation.
* The supported speed and duplex modes are listed below
*
* Bit 7 6 5 4 3 2 1 0
* Speed (Mbps) N/A N/A 1000 N/A 100 100 10 10
* Duplex Full Full Half Full Half
*
* @Default Value: 0x2F (copper)
*/
static int AutoNeg = OPTION_UNSET;
module_param(AutoNeg, int, 0);
MODULE_PARM_DESC(AutoNeg, "Advertised auto-negotiation setting");
#define PHY_ADVERTISE_10_HALF 0x0001
#define PHY_ADVERTISE_10_FULL 0x0002
#define PHY_ADVERTISE_100_HALF 0x0004
#define PHY_ADVERTISE_100_FULL 0x0008
#define PHY_ADVERTISE_1000_HALF 0x0010 /* Not used, just FYI */
#define PHY_ADVERTISE_1000_FULL 0x0020
#define PCH_AUTONEG_ADVERTISE_DEFAULT 0x2F
/**
* FlowControl - User Specified Flow Control Override
* @Valid Range: 0-3
* - 0: No Flow Control
* - 1: Rx only, respond to PAUSE frames but do not generate them
* - 2: Tx only, generate PAUSE frames but ignore them on receive
* - 3: Full Flow Control Support
* @Default Value: Read flow control settings from the EEPROM
*/
static int FlowControl = OPTION_UNSET;
module_param(FlowControl, int, 0);
MODULE_PARM_DESC(FlowControl, "Flow Control setting");
/*
* XsumRX - Receive Checksum Offload Enable/Disable
* @Valid Range: 0, 1
* - 0: disables all checksum offload
* - 1: enables receive IP/TCP/UDP checksum offload
* @Default Value: PCH_GBE_DEFAULT_RX_CSUM
*/
static int XsumRX = OPTION_UNSET;
module_param(XsumRX, int, 0);
MODULE_PARM_DESC(XsumRX, "Disable or enable Receive Checksum offload");
#define PCH_GBE_DEFAULT_RX_CSUM true /* trueorfalse */
/*
* XsumTX - Transmit Checksum Offload Enable/Disable
* @Valid Range: 0, 1
* - 0: disables all checksum offload
* - 1: enables transmit IP/TCP/UDP checksum offload
* @Default Value: PCH_GBE_DEFAULT_TX_CSUM
*/
static int XsumTX = OPTION_UNSET;
module_param(XsumTX, int, 0);
MODULE_PARM_DESC(XsumTX, "Disable or enable Transmit Checksum offload");
#define PCH_GBE_DEFAULT_TX_CSUM true /* trueorfalse */
/**
* pch_gbe_option - Force the MAC's flow control settings
* @hw: Pointer to the HW structure
* Returns:
* 0: Successful.
* Negative value: Failed.
*/
struct pch_gbe_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;
const struct pch_gbe_opt_list { int i; char *str; } *p;
} l;
} arg;
};
static const struct pch_gbe_opt_list speed_list[] = {
{ 0, "" },
{ SPEED_10, "" },
{ SPEED_100, "" },
{ SPEED_1000, "" }
};
static const struct pch_gbe_opt_list dplx_list[] = {
{ 0, "" },
{ HALF_DUPLEX, "" },
{ FULL_DUPLEX, "" }
};
static const struct pch_gbe_opt_list an_list[] =
#define AA "AutoNeg advertising "
{{ 0x01, AA "10/HD" },
{ 0x02, AA "10/FD" },
{ 0x03, AA "10/FD, 10/HD" },
{ 0x04, AA "100/HD" },
{ 0x05, AA "100/HD, 10/HD" },
{ 0x06, AA "100/HD, 10/FD" },
{ 0x07, AA "100/HD, 10/FD, 10/HD" },
{ 0x08, AA "100/FD" },
{ 0x09, AA "100/FD, 10/HD" },
{ 0x0a, AA "100/FD, 10/FD" },
{ 0x0b, AA "100/FD, 10/FD, 10/HD" },
{ 0x0c, AA "100/FD, 100/HD" },
{ 0x0d, AA "100/FD, 100/HD, 10/HD" },
{ 0x0e, AA "100/FD, 100/HD, 10/FD" },
{ 0x0f, AA "100/FD, 100/HD, 10/FD, 10/HD" },
{ 0x20, AA "1000/FD" },
{ 0x21, AA "1000/FD, 10/HD" },
{ 0x22, AA "1000/FD, 10/FD" },
{ 0x23, AA "1000/FD, 10/FD, 10/HD" },
{ 0x24, AA "1000/FD, 100/HD" },
{ 0x25, AA "1000/FD, 100/HD, 10/HD" },
{ 0x26, AA "1000/FD, 100/HD, 10/FD" },
{ 0x27, AA "1000/FD, 100/HD, 10/FD, 10/HD" },
{ 0x28, AA "1000/FD, 100/FD" },
{ 0x29, AA "1000/FD, 100/FD, 10/HD" },
{ 0x2a, AA "1000/FD, 100/FD, 10/FD" },
{ 0x2b, AA "1000/FD, 100/FD, 10/FD, 10/HD" },
{ 0x2c, AA "1000/FD, 100/FD, 100/HD" },
{ 0x2d, AA "1000/FD, 100/FD, 100/HD, 10/HD" },
{ 0x2e, AA "1000/FD, 100/FD, 100/HD, 10/FD" },
{ 0x2f, AA "1000/FD, 100/FD, 100/HD, 10/FD, 10/HD" }
};
static const struct pch_gbe_opt_list fc_list[] = {
{ PCH_GBE_FC_NONE, "Flow Control Disabled" },
{ PCH_GBE_FC_RX_PAUSE, "Flow Control Receive Only" },
{ PCH_GBE_FC_TX_PAUSE, "Flow Control Transmit Only" },
{ PCH_GBE_FC_FULL, "Flow Control Enabled" }
};
/**
* pch_gbe_validate_option - Validate option
* @value: value
* @opt: option
* @adapter: Board private structure
* Returns:
* 0: Successful.
* Negative value: Failed.
*/
static int pch_gbe_validate_option(int *value,
const struct pch_gbe_option *opt,
struct pch_gbe_adapter *adapter)
{
if (*value == OPTION_UNSET) {
*value = opt->def;
return 0;
}
switch (opt->type) {
case enable_option:
switch (*value) {
case OPTION_ENABLED:
pr_debug("%s Enabled\n", opt->name);
return 0;
case OPTION_DISABLED:
pr_debug("%s Disabled\n", opt->name);
return 0;
}
break;
case range_option:
if (*value >= opt->arg.r.min && *value <= opt->arg.r.max) {
pr_debug("%s set to %i\n", opt->name, *value);
return 0;
}
break;
case list_option: {
int i;
const struct pch_gbe_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')
pr_debug("%s\n", ent->str);
return 0;
}
}
}
break;
default:
BUG();
}
pr_debug("Invalid %s value specified (%i) %s\n",
opt->name, *value, opt->err);
*value = opt->def;
return -1;
}
/**
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