| /**************************************************************************** |
| * 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 */ |
