1 /****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2006-2008 Solarflare Communications Inc.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published
7 * by the Free Software Foundation, incorporated herein by reference.
10 #ifndef EFX_MDIO_10G_H
11 #define EFX_MDIO_10G_H
14 * Definitions needed for doing 10G MDIO as specified in clause 45
15 * MDIO, which do not appear in Linux yet. Also some helper functions.
21 /* Numbering of the MDIO Manageable Devices (MMDs) */
22 /* Physical Medium Attachment/ Physical Medium Dependent sublayer */
23 #define MDIO_MMD_PMAPMD (1)
24 /* WAN Interface Sublayer */
25 #define MDIO_MMD_WIS (2)
26 /* Physical Coding Sublayer */
27 #define MDIO_MMD_PCS (3)
28 /* PHY Extender Sublayer */
29 #define MDIO_MMD_PHYXS (4)
30 /* Extender Sublayer */
31 #define MDIO_MMD_DTEXS (5)
32 /* Transmission convergence */
33 #define MDIO_MMD_TC (6)
34 /* Auto negotiation */
35 #define MDIO_MMD_AN (7)
37 /* Generic register locations */
38 #define MDIO_MMDREG_CTRL1 (0)
39 #define MDIO_MMDREG_STAT1 (1)
40 #define MDIO_MMDREG_IDHI (2)
41 #define MDIO_MMDREG_IDLOW (3)
42 #define MDIO_MMDREG_SPEED (4)
43 #define MDIO_MMDREG_DEVS0 (5)
44 #define MDIO_MMDREG_DEVS1 (6)
45 #define MDIO_MMDREG_CTRL2 (7)
46 #define MDIO_MMDREG_STAT2 (8)
47 #define MDIO_MMDREG_TXDIS (9)
49 /* Bits in MMDREG_CTRL1 */
51 #define MDIO_MMDREG_CTRL1_RESET_LBN (15)
52 #define MDIO_MMDREG_CTRL1_RESET_WIDTH (1)
54 /* Loopback bit for WIS, PCS, PHYSX and DTEXS */
55 #define MDIO_MMDREG_CTRL1_LBACK_LBN (14)
56 #define MDIO_MMDREG_CTRL1_LBACK_WIDTH (1)
58 /* Bits in MMDREG_STAT1 */
59 #define MDIO_MMDREG_STAT1_FAULT_LBN (7)
60 #define MDIO_MMDREG_STAT1_FAULT_WIDTH (1)
62 #define MDIO_MMDREG_STAT1_LINK_LBN (2)
63 #define MDIO_MMDREG_STAT1_LINK_WIDTH (1)
64 /* Low power ability */
65 #define MDIO_MMDREG_STAT1_LPABLE_LBN (1)
66 #define MDIO_MMDREG_STAT1_LPABLE_WIDTH (1)
69 #define MDIO_ID_REV(_id32) (_id32 & 0xf)
70 #define MDIO_ID_MODEL(_id32) ((_id32 >> 4) & 0x3f)
71 #define MDIO_ID_OUI(_id32) (_id32 >> 10)
73 /* Bits in MMDREG_DEVS0. Someone thoughtfully layed things out
74 * so the 'bit present' bit number of an MMD is the number of
76 #define DEV_PRESENT_BIT(_b) (1 << _b)
78 #define MDIO_MMDREG_DEVS0_PHYXS DEV_PRESENT_BIT(MDIO_MMD_PHYXS)
79 #define MDIO_MMDREG_DEVS0_PCS DEV_PRESENT_BIT(MDIO_MMD_PCS)
80 #define MDIO_MMDREG_DEVS0_PMAPMD DEV_PRESENT_BIT(MDIO_MMD_PMAPMD)
82 /* Bits in MMDREG_STAT2 */
83 #define MDIO_MMDREG_STAT2_PRESENT_VAL (2)
84 #define MDIO_MMDREG_STAT2_PRESENT_LBN (14)
85 #define MDIO_MMDREG_STAT2_PRESENT_WIDTH (2)
87 /* Bits in MMDREG_TXDIS */
88 #define MDIO_MMDREG_TXDIS_GLOBAL_LBN (0)
89 #define MDIO_MMDREG_TXDIS_GLOBAL_WIDTH (1)
91 /* MMD-specific bits, ordered by MMD, then register */
92 #define MDIO_PMAPMD_CTRL1_LBACK_LBN (0)
93 #define MDIO_PMAPMD_CTRL1_LBACK_WIDTH (1)
95 /* PMA type (4 bits) */
96 #define MDIO_PMAPMD_CTRL2_10G_CX4 (0x0)
97 #define MDIO_PMAPMD_CTRL2_10G_EW (0x1)
98 #define MDIO_PMAPMD_CTRL2_10G_LW (0x2)
99 #define MDIO_PMAPMD_CTRL2_10G_SW (0x3)
100 #define MDIO_PMAPMD_CTRL2_10G_LX4 (0x4)
101 #define MDIO_PMAPMD_CTRL2_10G_ER (0x5)
102 #define MDIO_PMAPMD_CTRL2_10G_LR (0x6)
103 #define MDIO_PMAPMD_CTRL2_10G_SR (0x7)
105 #define MDIO_PMAPMD_CTRL2_10G_BT (0x9)
108 #define MDIO_PMAPMD_CTRL2_1G_BT (0xc)
110 #define MDIO_PMAPMD_CTRL2_100_BT (0xe)
111 #define MDIO_PMAPMD_CTRL2_10_BT (0xf)
112 #define MDIO_PMAPMD_CTRL2_TYPE_MASK (0xf)
114 /* PHY XGXS lane state */
115 #define MDIO_PHYXS_LANE_STATE (0x18)
116 #define MDIO_PHYXS_LANE_ALIGNED_LBN (12)
119 #define MDIO_AN_STATUS (1)
120 #define MDIO_AN_STATUS_XNP_LBN (7)
121 #define MDIO_AN_STATUS_PAGE_LBN (6)
122 #define MDIO_AN_STATUS_AN_DONE_LBN (5)
123 #define MDIO_AN_STATUS_LP_AN_CAP_LBN (0)
125 #define MDIO_AN_10GBT_STATUS (33)
126 #define MDIO_AN_10GBT_STATUS_MS_FLT_LBN (15) /* MASTER/SLAVE config fault */
127 #define MDIO_AN_10GBT_STATUS_MS_LBN (14) /* MASTER/SLAVE config */
128 #define MDIO_AN_10GBT_STATUS_LOC_OK_LBN (13) /* Local OK */
129 #define MDIO_AN_10GBT_STATUS_REM_OK_LBN (12) /* Remote OK */
130 #define MDIO_AN_10GBT_STATUS_LP_10G_LBN (11) /* Link partner is 10GBT capable */
131 #define MDIO_AN_10GBT_STATUS_LP_LTA_LBN (10) /* LP loop timing ability */
132 #define MDIO_AN_10GBT_STATUS_LP_TRR_LBN (9) /* LP Training Reset Request */
135 /* Packing of the prt and dev arguments of clause 45 style MDIO into a
136 * single int so they can be passed into the mdio_read/write functions
137 * that currently exist. Note that as Falcon is the only current user,
138 * the packed form is chosen to match what Falcon needs to write into
139 * a register. This is checked at compile-time so do not change it. If
140 * your target chip needs things layed out differently you will need
141 * to unpack the arguments in your chip-specific mdio functions.
143 /* These are defined by the standard. */
144 #define MDIO45_PRT_ID_WIDTH (5)
145 #define MDIO45_DEV_ID_WIDTH (5)
147 /* The prt ID is just packed in immediately to the left of the dev ID */
148 #define MDIO45_PRT_DEV_WIDTH (MDIO45_PRT_ID_WIDTH + MDIO45_DEV_ID_WIDTH)
150 #define MDIO45_PRT_ID_MASK ((1 << MDIO45_PRT_DEV_WIDTH) - 1)
151 /* This is the prt + dev extended by 1 bit to hold the 'is clause 45' flag. */
152 #define MDIO45_XPRT_ID_WIDTH (MDIO45_PRT_DEV_WIDTH + 1)
153 #define MDIO45_XPRT_ID_MASK ((1 << MDIO45_XPRT_ID_WIDTH) - 1)
154 #define MDIO45_XPRT_ID_IS10G (1 << (MDIO45_XPRT_ID_WIDTH - 1))
157 #define MDIO45_PRT_ID_COMP_LBN MDIO45_DEV_ID_WIDTH
158 #define MDIO45_PRT_ID_COMP_WIDTH MDIO45_PRT_ID_WIDTH
159 #define MDIO45_DEV_ID_COMP_LBN 0
160 #define MDIO45_DEV_ID_COMP_WIDTH MDIO45_DEV_ID_WIDTH
162 /* Compose port and device into a phy_id */
163 static inline int mdio_clause45_pack(u8 prt, u8 dev)
166 EFX_POPULATE_DWORD_2(phy_id, MDIO45_PRT_ID_COMP, prt,
167 MDIO45_DEV_ID_COMP, dev);
168 return MDIO45_XPRT_ID_IS10G | EFX_DWORD_VAL(phy_id);
171 static inline void mdio_clause45_unpack(u32 val, u8 *prt, u8 *dev)
174 EFX_POPULATE_DWORD_1(phy_id, EFX_DWORD_0, val);
175 *prt = EFX_DWORD_FIELD(phy_id, MDIO45_PRT_ID_COMP);
176 *dev = EFX_DWORD_FIELD(phy_id, MDIO45_DEV_ID_COMP);
179 static inline int mdio_clause45_read(struct efx_nic *efx,
180 u8 prt, u8 dev, u16 addr)
182 return efx->mii.mdio_read(efx->net_dev,
183 mdio_clause45_pack(prt, dev), addr);
186 static inline void mdio_clause45_write(struct efx_nic *efx,
187 u8 prt, u8 dev, u16 addr, int value)
189 efx->mii.mdio_write(efx->net_dev,
190 mdio_clause45_pack(prt, dev), addr, value);
194 static inline u32 mdio_clause45_read_id(struct efx_nic *efx, int mmd)
196 int phy_id = efx->mii.phy_id;
197 u16 id_low = mdio_clause45_read(efx, phy_id, mmd, MDIO_MMDREG_IDLOW);
198 u16 id_hi = mdio_clause45_read(efx, phy_id, mmd, MDIO_MMDREG_IDHI);
199 return (id_hi << 16) | (id_low);
202 static inline int mdio_clause45_phyxgxs_lane_sync(struct efx_nic *efx)
204 int i, sync, lane_status;
206 for (i = 0; i < 2; ++i)
207 lane_status = mdio_clause45_read(efx, efx->mii.phy_id,
209 MDIO_PHYXS_LANE_STATE);
211 sync = (lane_status & (1 << MDIO_PHYXS_LANE_ALIGNED_LBN)) != 0;
213 EFX_INFO(efx, "XGXS lane status: %x\n", lane_status);
217 extern const char *mdio_clause45_mmd_name(int mmd);
220 * Reset a specific MMD and wait for reset to clear.
221 * Return number of spins left (>0) on success, -%ETIMEDOUT on failure.
223 * This function will sleep
225 extern int mdio_clause45_reset_mmd(struct efx_nic *efx, int mmd,
226 int spins, int spintime);
228 /* As mdio_clause45_check_mmd but for multiple MMDs */
229 int mdio_clause45_check_mmds(struct efx_nic *efx,
230 unsigned int mmd_mask, unsigned int fatal_mask);
232 /* Check the link status of specified mmds in bit mask */
233 extern int mdio_clause45_links_ok(struct efx_nic *efx,
234 unsigned int mmd_mask);
236 /* Generic transmit disable support though PMAPMD */
237 extern void mdio_clause45_transmit_disable(struct efx_nic *efx);
239 /* Generic part of reconfigure: set/clear loopback bits */
240 extern void mdio_clause45_phy_reconfigure(struct efx_nic *efx);
242 /* Read (some of) the PHY settings over MDIO */
243 extern void mdio_clause45_get_settings(struct efx_nic *efx,
244 struct ethtool_cmd *ecmd);
246 /* Set (some of) the PHY settings over MDIO */
247 extern int mdio_clause45_set_settings(struct efx_nic *efx,
248 struct ethtool_cmd *ecmd);
250 /* Wait for specified MMDs to exit reset within a timeout */
251 extern int mdio_clause45_wait_reset_mmds(struct efx_nic *efx,
252 unsigned int mmd_mask);
254 #endif /* EFX_MDIO_10G_H */