/**************************************************************************** * 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 /* 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 */