forked from luck/tmp_suning_uos_patched
8ceee660aa
The driver supports the 10Xpress PHY and XFP modules on our reference designs SFE4001 and SFE4002 and the SMC models SMC10GPCIe-XFP and SMC10GPCIe-10BT. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
196 lines
7.4 KiB
C
196 lines
7.4 KiB
C
/****************************************************************************
|
|
* Driver for Solarflare Solarstorm network controllers and boards
|
|
* Copyright 2005-2006 Fen Systems Ltd.
|
|
* Copyright 2006 Solarflare Communications Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 as published
|
|
* by the Free Software Foundation, incorporated herein by reference.
|
|
*/
|
|
|
|
#ifndef EFX_GMII_H
|
|
#define EFX_GMII_H
|
|
|
|
/*
|
|
* GMII interface
|
|
*/
|
|
|
|
#include <linux/mii.h>
|
|
|
|
/* GMII registers, excluding registers already defined as MII
|
|
* registers in mii.h
|
|
*/
|
|
#define GMII_IER 0x12 /* Interrupt enable register */
|
|
#define GMII_ISR 0x13 /* Interrupt status register */
|
|
|
|
/* Interrupt enable register */
|
|
#define IER_ANEG_ERR 0x8000 /* Bit 15 - autonegotiation error */
|
|
#define IER_SPEED_CHG 0x4000 /* Bit 14 - speed changed */
|
|
#define IER_DUPLEX_CHG 0x2000 /* Bit 13 - duplex changed */
|
|
#define IER_PAGE_RCVD 0x1000 /* Bit 12 - page received */
|
|
#define IER_ANEG_DONE 0x0800 /* Bit 11 - autonegotiation complete */
|
|
#define IER_LINK_CHG 0x0400 /* Bit 10 - link status changed */
|
|
#define IER_SYM_ERR 0x0200 /* Bit 9 - symbol error */
|
|
#define IER_FALSE_CARRIER 0x0100 /* Bit 8 - false carrier */
|
|
#define IER_FIFO_ERR 0x0080 /* Bit 7 - FIFO over/underflow */
|
|
#define IER_MDIX_CHG 0x0040 /* Bit 6 - MDI crossover changed */
|
|
#define IER_DOWNSHIFT 0x0020 /* Bit 5 - downshift */
|
|
#define IER_ENERGY 0x0010 /* Bit 4 - energy detect */
|
|
#define IER_DTE_POWER 0x0004 /* Bit 2 - DTE power detect */
|
|
#define IER_POLARITY_CHG 0x0002 /* Bit 1 - polarity changed */
|
|
#define IER_JABBER 0x0001 /* Bit 0 - jabber */
|
|
|
|
/* Interrupt status register */
|
|
#define ISR_ANEG_ERR 0x8000 /* Bit 15 - autonegotiation error */
|
|
#define ISR_SPEED_CHG 0x4000 /* Bit 14 - speed changed */
|
|
#define ISR_DUPLEX_CHG 0x2000 /* Bit 13 - duplex changed */
|
|
#define ISR_PAGE_RCVD 0x1000 /* Bit 12 - page received */
|
|
#define ISR_ANEG_DONE 0x0800 /* Bit 11 - autonegotiation complete */
|
|
#define ISR_LINK_CHG 0x0400 /* Bit 10 - link status changed */
|
|
#define ISR_SYM_ERR 0x0200 /* Bit 9 - symbol error */
|
|
#define ISR_FALSE_CARRIER 0x0100 /* Bit 8 - false carrier */
|
|
#define ISR_FIFO_ERR 0x0080 /* Bit 7 - FIFO over/underflow */
|
|
#define ISR_MDIX_CHG 0x0040 /* Bit 6 - MDI crossover changed */
|
|
#define ISR_DOWNSHIFT 0x0020 /* Bit 5 - downshift */
|
|
#define ISR_ENERGY 0x0010 /* Bit 4 - energy detect */
|
|
#define ISR_DTE_POWER 0x0004 /* Bit 2 - DTE power detect */
|
|
#define ISR_POLARITY_CHG 0x0002 /* Bit 1 - polarity changed */
|
|
#define ISR_JABBER 0x0001 /* Bit 0 - jabber */
|
|
|
|
/* Logically extended advertisement register */
|
|
#define GM_ADVERTISE_SLCT ADVERTISE_SLCT
|
|
#define GM_ADVERTISE_CSMA ADVERTISE_CSMA
|
|
#define GM_ADVERTISE_10HALF ADVERTISE_10HALF
|
|
#define GM_ADVERTISE_1000XFULL ADVERTISE_1000XFULL
|
|
#define GM_ADVERTISE_10FULL ADVERTISE_10FULL
|
|
#define GM_ADVERTISE_1000XHALF ADVERTISE_1000XHALF
|
|
#define GM_ADVERTISE_100HALF ADVERTISE_100HALF
|
|
#define GM_ADVERTISE_1000XPAUSE ADVERTISE_1000XPAUSE
|
|
#define GM_ADVERTISE_100FULL ADVERTISE_100FULL
|
|
#define GM_ADVERTISE_1000XPSE_ASYM ADVERTISE_1000XPSE_ASYM
|
|
#define GM_ADVERTISE_100BASE4 ADVERTISE_100BASE4
|
|
#define GM_ADVERTISE_PAUSE_CAP ADVERTISE_PAUSE_CAP
|
|
#define GM_ADVERTISE_PAUSE_ASYM ADVERTISE_PAUSE_ASYM
|
|
#define GM_ADVERTISE_RESV ADVERTISE_RESV
|
|
#define GM_ADVERTISE_RFAULT ADVERTISE_RFAULT
|
|
#define GM_ADVERTISE_LPACK ADVERTISE_LPACK
|
|
#define GM_ADVERTISE_NPAGE ADVERTISE_NPAGE
|
|
#define GM_ADVERTISE_1000FULL (ADVERTISE_1000FULL << 8)
|
|
#define GM_ADVERTISE_1000HALF (ADVERTISE_1000HALF << 8)
|
|
#define GM_ADVERTISE_1000 (GM_ADVERTISE_1000FULL | \
|
|
GM_ADVERTISE_1000HALF)
|
|
#define GM_ADVERTISE_FULL (GM_ADVERTISE_1000FULL | \
|
|
ADVERTISE_FULL)
|
|
#define GM_ADVERTISE_ALL (GM_ADVERTISE_1000FULL | \
|
|
GM_ADVERTISE_1000HALF | \
|
|
ADVERTISE_ALL)
|
|
|
|
/* Logically extended link partner ability register */
|
|
#define GM_LPA_SLCT LPA_SLCT
|
|
#define GM_LPA_10HALF LPA_10HALF
|
|
#define GM_LPA_1000XFULL LPA_1000XFULL
|
|
#define GM_LPA_10FULL LPA_10FULL
|
|
#define GM_LPA_1000XHALF LPA_1000XHALF
|
|
#define GM_LPA_100HALF LPA_100HALF
|
|
#define GM_LPA_1000XPAUSE LPA_1000XPAUSE
|
|
#define GM_LPA_100FULL LPA_100FULL
|
|
#define GM_LPA_1000XPAUSE_ASYM LPA_1000XPAUSE_ASYM
|
|
#define GM_LPA_100BASE4 LPA_100BASE4
|
|
#define GM_LPA_PAUSE_CAP LPA_PAUSE_CAP
|
|
#define GM_LPA_PAUSE_ASYM LPA_PAUSE_ASYM
|
|
#define GM_LPA_RESV LPA_RESV
|
|
#define GM_LPA_RFAULT LPA_RFAULT
|
|
#define GM_LPA_LPACK LPA_LPACK
|
|
#define GM_LPA_NPAGE LPA_NPAGE
|
|
#define GM_LPA_1000FULL (LPA_1000FULL << 6)
|
|
#define GM_LPA_1000HALF (LPA_1000HALF << 6)
|
|
#define GM_LPA_10000FULL 0x00040000
|
|
#define GM_LPA_10000HALF 0x00080000
|
|
#define GM_LPA_DUPLEX (GM_LPA_1000FULL | GM_LPA_10000FULL \
|
|
| LPA_DUPLEX)
|
|
#define GM_LPA_10 (LPA_10FULL | LPA_10HALF)
|
|
#define GM_LPA_100 LPA_100
|
|
#define GM_LPA_1000 (GM_LPA_1000FULL | GM_LPA_1000HALF)
|
|
#define GM_LPA_10000 (GM_LPA_10000FULL | GM_LPA_10000HALF)
|
|
|
|
/* Retrieve GMII autonegotiation advertised abilities
|
|
*
|
|
* The MII advertisment register (MII_ADVERTISE) is logically extended
|
|
* to include advertisement bits ADVERTISE_1000FULL and
|
|
* ADVERTISE_1000HALF from MII_CTRL1000. The result can be tested
|
|
* against the GM_ADVERTISE_xxx constants.
|
|
*/
|
|
static inline unsigned int gmii_advertised(struct mii_if_info *gmii)
|
|
{
|
|
unsigned int advertise;
|
|
unsigned int ctrl1000;
|
|
|
|
advertise = gmii->mdio_read(gmii->dev, gmii->phy_id, MII_ADVERTISE);
|
|
ctrl1000 = gmii->mdio_read(gmii->dev, gmii->phy_id, MII_CTRL1000);
|
|
return (((ctrl1000 << 8) & GM_ADVERTISE_1000) | advertise);
|
|
}
|
|
|
|
/* Retrieve GMII autonegotiation link partner abilities
|
|
*
|
|
* The MII link partner ability register (MII_LPA) is logically
|
|
* extended by adding bits LPA_1000HALF and LPA_1000FULL from
|
|
* MII_STAT1000. The result can be tested against the GM_LPA_xxx
|
|
* constants.
|
|
*/
|
|
static inline unsigned int gmii_lpa(struct mii_if_info *gmii)
|
|
{
|
|
unsigned int lpa;
|
|
unsigned int stat1000;
|
|
|
|
lpa = gmii->mdio_read(gmii->dev, gmii->phy_id, MII_LPA);
|
|
stat1000 = gmii->mdio_read(gmii->dev, gmii->phy_id, MII_STAT1000);
|
|
return (((stat1000 << 6) & GM_LPA_1000) | lpa);
|
|
}
|
|
|
|
/* Calculate GMII autonegotiated link technology
|
|
*
|
|
* "negotiated" should be the result of gmii_advertised() logically
|
|
* ANDed with the result of gmii_lpa().
|
|
*
|
|
* "tech" will be negotiated with the unused bits masked out. For
|
|
* example, if both ends of the link are capable of both
|
|
* GM_LPA_1000FULL and GM_LPA_100FULL, GM_LPA_100FULL will be masked
|
|
* out.
|
|
*/
|
|
static inline unsigned int gmii_nway_result(unsigned int negotiated)
|
|
{
|
|
unsigned int other_bits;
|
|
|
|
/* Mask out the speed and duplexity bits */
|
|
other_bits = negotiated & ~(GM_LPA_10 | GM_LPA_100 | GM_LPA_1000);
|
|
|
|
if (negotiated & GM_LPA_1000FULL)
|
|
return (other_bits | GM_LPA_1000FULL);
|
|
else if (negotiated & GM_LPA_1000HALF)
|
|
return (other_bits | GM_LPA_1000HALF);
|
|
else
|
|
return (other_bits | mii_nway_result(negotiated));
|
|
}
|
|
|
|
/* Calculate GMII non-autonegotiated link technology
|
|
*
|
|
* This provides an equivalent to gmii_nway_result for the case when
|
|
* autonegotiation is disabled.
|
|
*/
|
|
static inline unsigned int gmii_forced_result(unsigned int bmcr)
|
|
{
|
|
unsigned int result;
|
|
int full_duplex;
|
|
|
|
full_duplex = bmcr & BMCR_FULLDPLX;
|
|
if (bmcr & BMCR_SPEED1000)
|
|
result = full_duplex ? GM_LPA_1000FULL : GM_LPA_1000HALF;
|
|
else if (bmcr & BMCR_SPEED100)
|
|
result = full_duplex ? GM_LPA_100FULL : GM_LPA_100HALF;
|
|
else
|
|
result = full_duplex ? GM_LPA_10FULL : GM_LPA_10HALF;
|
|
return result;
|
|
}
|
|
|
|
#endif /* EFX_GMII_H */
|