forked from Minki/linux
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>
233 lines
7.6 KiB
C
233 lines
7.6 KiB
C
/****************************************************************************
|
|
* 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)
|
|
|
|
/* Bits in MMDREG_CTRL1 */
|
|
/* Reset */
|
|
#define MDIO_MMDREG_CTRL1_RESET_LBN (15)
|
|
#define MDIO_MMDREG_CTRL1_RESET_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)
|
|
|
|
/* 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)
|
|
|
|
/* 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_INFO(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);
|
|
|
|
/* 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 */
|