| /**************************************************************************** |
| * Driver for Solarflare Solarstorm network controllers and boards |
| * Copyright 2006-2008 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_MDIO_10G_H |
| #define EFX_MDIO_10G_H |
| |
| /* |
| * Definitions needed for doing 10G MDIO as specified in clause 45 |
| * MDIO, which do not appear in Linux yet. Also some helper functions. |
| */ |
| |
| #include "efx.h" |
| #include "boards.h" |
| |
| /* Numbering of the MDIO Manageable Devices (MMDs) */ |
| /* Physical Medium Attachment/ Physical Medium Dependent sublayer */ |
| #define MDIO_MMD_PMAPMD (1) |
| /* WAN Interface Sublayer */ |
| #define MDIO_MMD_WIS (2) |
| /* Physical Coding Sublayer */ |
| #define MDIO_MMD_PCS (3) |
| /* PHY Extender Sublayer */ |
| #define MDIO_MMD_PHYXS (4) |
| /* Extender Sublayer */ |
| #define MDIO_MMD_DTEXS (5) |
| /* Transmission convergence */ |
| #define MDIO_MMD_TC (6) |
| /* Auto negotiation */ |
| #define MDIO_MMD_AN (7) |
| |
| /* Generic register locations */ |
| #define MDIO_MMDREG_CTRL1 (0) |
| #define MDIO_MMDREG_STAT1 (1) |
| #define MDIO_MMDREG_IDHI (2) |
| #define MDIO_MMDREG_IDLOW (3) |
| #define MDIO_MMDREG_SPEED (4) |
| #define MDIO_MMDREG_DEVS0 (5) |
| #define MDIO_MMDREG_DEVS1 (6) |
| #define MDIO_MMDREG_CTRL2 (7) |
| #define MDIO_MMDREG_STAT2 (8) |
| #define MDIO_MMDREG_TXDIS (9) |
| |
| /* Bits in MMDREG_CTRL1 */ |
| /* Reset */ |
| #define MDIO_MMDREG_CTRL1_RESET_LBN (15) |
| #define MDIO_MMDREG_CTRL1_RESET_WIDTH (1) |
| /* Loopback */ |
| /* Loopback bit for WIS, PCS, PHYSX and DTEXS */ |
| #define MDIO_MMDREG_CTRL1_LBACK_LBN (14) |
| #define MDIO_MMDREG_CTRL1_LBACK_WIDTH (1) |
| |
| /* Bits in MMDREG_STAT1 */ |
| #define MDIO_MMDREG_STAT1_FAULT_LBN (7) |
| #define MDIO_MMDREG_STAT1_FAULT_WIDTH (1) |
| /* Link state */ |
| #define MDIO_MMDREG_STAT1_LINK_LBN (2) |
| #define MDIO_MMDREG_STAT1_LINK_WIDTH (1) |
| /* Low power ability */ |
| #define MDIO_MMDREG_STAT1_LPABLE_LBN (1) |
| #define MDIO_MMDREG_STAT1_LPABLE_WIDTH (1) |
| |
| /* Bits in ID reg */ |
| #define MDIO_ID_REV(_id32) (_id32 & 0xf) |
| #define MDIO_ID_MODEL(_id32) ((_id32 >> 4) & 0x3f) |
| #define MDIO_ID_OUI(_id32) (_id32 >> 10) |
| |
| /* Bits in MMDREG_DEVS0. Someone thoughtfully layed things out |
| * so the 'bit present' bit number of an MMD is the number of |
| * that MMD */ |
| #define DEV_PRESENT_BIT(_b) (1 << _b) |
| |
| #define MDIO_MMDREG_DEVS0_PHYXS DEV_PRESENT_BIT(MDIO_MMD_PHYXS) |
| #define MDIO_MMDREG_DEVS0_PCS DEV_PRESENT_BIT(MDIO_MMD_PCS) |
| #define MDIO_MMDREG_DEVS0_PMAPMD DEV_PRESENT_BIT(MDIO_MMD_PMAPMD) |
| |
| /* Bits in MMDREG_STAT2 */ |
| #define MDIO_MMDREG_STAT2_PRESENT_VAL (2) |
| #define MDIO_MMDREG_STAT2_PRESENT_LBN (14) |
| #define MDIO_MMDREG_STAT2_PRESENT_WIDTH (2) |
| |
| /* Bits in MMDREG_TXDIS */ |
| #define MDIO_MMDREG_TXDIS_GLOBAL_LBN (0) |
| #define MDIO_MMDREG_TXDIS_GLOBAL_WIDTH (1) |
| |
| /* MMD-specific bits, ordered by MMD, then register */ |
| #define MDIO_PMAPMD_CTRL1_LBACK_LBN (0) |
| #define MDIO_PMAPMD_CTRL1_LBACK_WIDTH (1) |
| |
| /* PMA type (4 bits) */ |
| #define MDIO_PMAPMD_CTRL2_10G_CX4 (0x0) |
| #define MDIO_PMAPMD_CTRL2_10G_EW (0x1) |
| #define MDIO_PMAPMD_CTRL2_10G_LW (0x2) |
| #define MDIO_PMAPMD_CTRL2_10G_SW (0x3) |
| #define MDIO_PMAPMD_CTRL2_10G_LX4 (0x4) |
| #define MDIO_PMAPMD_CTRL2_10G_ER (0x5) |
| #define MDIO_PMAPMD_CTRL2_10G_LR (0x6) |
| #define MDIO_PMAPMD_CTRL2_10G_SR (0x7) |
| /* Reserved */ |
| #define MDIO_PMAPMD_CTRL2_10G_BT (0x9) |
| /* Reserved */ |
| /* Reserved */ |
| #define MDIO_PMAPMD_CTRL2_1G_BT (0xc) |
| /* Reserved */ |
| #define MDIO_PMAPMD_CTRL2_100_BT (0xe) |
| #define MDIO_PMAPMD_CTRL2_10_BT (0xf) |
| #define MDIO_PMAPMD_CTRL2_TYPE_MASK (0xf) |
| |
| /* PHY XGXS lane state */ |
| #define MDIO_PHYXS_LANE_STATE (0x18) |
| #define MDIO_PHYXS_LANE_ALIGNED_LBN (12) |
| |
| /* AN registers */ |
| #define MDIO_AN_STATUS (1) |
| #define MDIO_AN_STATUS_XNP_LBN (7) |
| #define MDIO_AN_STATUS_PAGE_LBN (6) |
| #define MDIO_AN_STATUS_AN_DONE_LBN (5) |
| #define MDIO_AN_STATUS_LP_AN_CAP_LBN (0) |
| |
| #define MDIO_AN_10GBT_STATUS (33) |
| #define MDIO_AN_10GBT_STATUS_MS_FLT_LBN (15) /* MASTER/SLAVE config fault */ |
| #define MDIO_AN_10GBT_STATUS_MS_LBN (14) /* MASTER/SLAVE config */ |
| #define MDIO_AN_10GBT_STATUS_LOC_OK_LBN (13) /* Local OK */ |
| #define MDIO_AN_10GBT_STATUS_REM_OK_LBN (12) /* Remote OK */ |
| #define MDIO_AN_10GBT_STATUS_LP_10G_LBN (11) /* Link partner is 10GBT capable */ |
| #define MDIO_AN_10GBT_STATUS_LP_LTA_LBN (10) /* LP loop timing ability */ |
| #define MDIO_AN_10GBT_STATUS_LP_TRR_LBN (9) /* LP Training Reset Request */ |
| |
| |
| /* Packing of the prt and dev arguments of clause 45 style MDIO into a |
| * single int so they can be passed into the mdio_read/write functions |
| * that currently exist. Note that as Falcon is the only current user, |
| * the packed form is chosen to match what Falcon needs to write into |
| * a register. This is checked at compile-time so do not change it. If |
| * your target chip needs things layed out differently you will need |
| * to unpack the arguments in your chip-specific mdio functions. |
| */ |
| /* These are defined by the standard. */ |
| #define MDIO45_PRT_ID_WIDTH (5) |
| #define MDIO45_DEV_ID_WIDTH (5) |
| |
| /* The prt ID is just packed in immediately to the left of the dev ID */ |
| #define MDIO45_PRT_DEV_WIDTH (MDIO45_PRT_ID_WIDTH + MDIO45_DEV_ID_WIDTH) |
| |
| #define MDIO45_PRT_ID_MASK ((1 << MDIO45_PRT_DEV_WIDTH) - 1) |
| /* This is the prt + dev extended by 1 bit to hold the 'is clause 45' flag. */ |
| #define MDIO45_XPRT_ID_WIDTH (MDIO45_PRT_DEV_WIDTH + 1) |
| #define MDIO45_XPRT_ID_MASK ((1 << MDIO45_XPRT_ID_WIDTH) - 1) |
| #define MDIO45_XPRT_ID_IS10G (1 << (MDIO45_XPRT_ID_WIDTH - 1)) |
| |
| |
| #define MDIO45_PRT_ID_COMP_LBN MDIO45_DEV_ID_WIDTH |
| #define MDIO45_PRT_ID_COMP_WIDTH MDIO45_PRT_ID_WIDTH |
| #define MDIO45_DEV_ID_COMP_LBN 0 |
| #define MDIO45_DEV_ID_COMP_WIDTH MDIO45_DEV_ID_WIDTH |
| |
| /* Compose port and device into a phy_id */ |
| static inline int mdio_clause45_pack(u8 prt, u8 dev) |
| { |
| efx_dword_t phy_id; |
| EFX_POPULATE_DWORD_2(phy_id, MDIO45_PRT_ID_COMP, prt, |
| MDIO45_DEV_ID_COMP, dev); |
| return MDIO45_XPRT_ID_IS10G | EFX_DWORD_VAL(phy_id); |
| } |
| |
| static inline void mdio_clause45_unpack(u32 val, u8 *prt, u8 *dev) |
| { |
| efx_dword_t phy_id; |
| EFX_POPULATE_DWORD_1(phy_id, EFX_DWORD_0, val); |
| *prt = EFX_DWORD_FIELD(phy_id, MDIO45_PRT_ID_COMP); |
| *dev = EFX_DWORD_FIELD(phy_id, MDIO45_DEV_ID_COMP); |
| } |
| |
| static inline int mdio_clause45_read(struct efx_nic *efx, |
| u8 prt, u8 dev, u16 addr) |
| { |
| return efx->mii.mdio_read(efx->net_dev, |
| mdio_clause45_pack(prt, dev), addr); |
| } |
| |
| static inline void mdio_clause45_write(struct efx_nic *efx, |
| u8 prt, u8 dev, u16 addr, int value) |
| { |
| efx->mii.mdio_write(efx->net_dev, |
| mdio_clause45_pack(prt, dev), addr, value); |
| } |
| |
| |
| static inline u32 mdio_clause45_read_id(struct efx_nic *efx, int mmd) |
| { |
| int phy_id = efx->mii.phy_id; |
| u16 id_low = mdio_clause45_read(efx, phy_id, mmd, MDIO_MMDREG_IDLOW); |
| u16 id_hi = mdio_clause45_read(efx, phy_id, mmd, MDIO_MMDREG_IDHI); |
| return (id_hi << 16) | (id_low); |
| } |
| |
| static inline int mdio_clause45_phyxgxs_lane_sync(struct efx_nic *efx) |
| { |
| int i, sync, lane_status; |
| |
| for (i = 0; i < 2; ++i) |
| lane_status = mdio_clause45_read(efx, efx->mii.phy_id, |
| MDIO_MMD_PHYXS, |
| MDIO_PHYXS_LANE_STATE); |
| |
| sync = (lane_status & (1 << MDIO_PHYXS_LANE_ALIGNED_LBN)) != 0; |
| if (!sync) |
| EFX_LOG(efx, "XGXS lane status: %x\n", lane_status); |
| return sync; |
| } |
| |
| extern const char *mdio_clause45_mmd_name(int mmd); |
| |
| /* |
| * Reset a specific MMD and wait for reset to clear. |
| * Return number of spins left (>0) on success, -%ETIMEDOUT on failure. |
| * |
| * This function will sleep |
| */ |
| extern int mdio_clause45_reset_mmd(struct efx_nic *efx, int mmd, |
| int spins, int spintime); |
| |
| /* As mdio_clause45_check_mmd but for multiple MMDs */ |
| int mdio_clause45_check_mmds(struct efx_nic *efx, |
| unsigned int mmd_mask, unsigned int fatal_mask); |
| |
| /* Check the link status of specified mmds in bit mask */ |
| extern int mdio_clause45_links_ok(struct efx_nic *efx, |
| unsigned int mmd_mask); |
| |
| /* Generic transmit disable support though PMAPMD */ |
| extern void mdio_clause45_transmit_disable(struct efx_nic *efx); |
| |
| /* Generic part of reconfigure: set/clear loopback bits */ |
| extern void mdio_clause45_phy_reconfigure(struct efx_nic *efx); |
| |
| /* Read (some of) the PHY settings over MDIO */ |
| extern void mdio_clause45_get_settings(struct efx_nic *efx, |
| struct ethtool_cmd *ecmd); |
| |
| /* Set (some of) the PHY settings over MDIO */ |
| extern int mdio_clause45_set_settings(struct efx_nic *efx, |
| struct ethtool_cmd *ecmd); |
| |
| /* Wait for specified MMDs to exit reset within a timeout */ |
| extern int mdio_clause45_wait_reset_mmds(struct efx_nic *efx, |
| unsigned int mmd_mask); |
| |
| #endif /* EFX_MDIO_10G_H */ |