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afd4aea0 BH |
1 | /**************************************************************************** |
2 | * Driver for Solarflare Solarstorm network controllers and boards | |
0a6f40c6 | 3 | * Copyright 2009-2010 Solarflare Communications Inc. |
afd4aea0 BH |
4 | * |
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. | |
8 | */ | |
9 | ||
10 | /* | |
11 | * Driver for PHY related operations via MCDI. | |
12 | */ | |
13 | ||
5a0e3ad6 | 14 | #include <linux/slab.h> |
afd4aea0 BH |
15 | #include "efx.h" |
16 | #include "phy.h" | |
17 | #include "mcdi.h" | |
18 | #include "mcdi_pcol.h" | |
affaf485 SH |
19 | #include "nic.h" |
20 | #include "selftest.h" | |
afd4aea0 | 21 | |
3bd93035 | 22 | struct efx_mcdi_phy_data { |
afd4aea0 BH |
23 | u32 flags; |
24 | u32 type; | |
25 | u32 supported_cap; | |
26 | u32 channel; | |
27 | u32 port; | |
28 | u32 stats_mask; | |
29 | u8 name[20]; | |
30 | u32 media; | |
31 | u32 mmd_mask; | |
32 | u8 revision[20]; | |
33 | u32 forced_cap; | |
34 | }; | |
35 | ||
36 | static int | |
3bd93035 | 37 | efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_data *cfg) |
afd4aea0 BH |
38 | { |
39 | u8 outbuf[MC_CMD_GET_PHY_CFG_OUT_LEN]; | |
40 | size_t outlen; | |
41 | int rc; | |
42 | ||
43 | BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_IN_LEN != 0); | |
44 | BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_OUT_NAME_LEN != sizeof(cfg->name)); | |
45 | ||
46 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_CFG, NULL, 0, | |
47 | outbuf, sizeof(outbuf), &outlen); | |
48 | if (rc) | |
49 | goto fail; | |
50 | ||
51 | if (outlen < MC_CMD_GET_PHY_CFG_OUT_LEN) { | |
00bbb4a5 | 52 | rc = -EIO; |
afd4aea0 BH |
53 | goto fail; |
54 | } | |
55 | ||
56 | cfg->flags = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_FLAGS); | |
57 | cfg->type = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_TYPE); | |
58 | cfg->supported_cap = | |
59 | MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_SUPPORTED_CAP); | |
60 | cfg->channel = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_CHANNEL); | |
61 | cfg->port = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_PRT); | |
62 | cfg->stats_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_STATS_MASK); | |
63 | memcpy(cfg->name, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_NAME), | |
64 | sizeof(cfg->name)); | |
65 | cfg->media = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MEDIA_TYPE); | |
66 | cfg->mmd_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MMD_MASK); | |
67 | memcpy(cfg->revision, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_REVISION), | |
68 | sizeof(cfg->revision)); | |
69 | ||
70 | return 0; | |
71 | ||
72 | fail: | |
62776d03 | 73 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
74 | return rc; |
75 | } | |
76 | ||
77 | static int efx_mcdi_set_link(struct efx_nic *efx, u32 capabilities, | |
78 | u32 flags, u32 loopback_mode, | |
79 | u32 loopback_speed) | |
80 | { | |
81 | u8 inbuf[MC_CMD_SET_LINK_IN_LEN]; | |
82 | int rc; | |
83 | ||
84 | BUILD_BUG_ON(MC_CMD_SET_LINK_OUT_LEN != 0); | |
85 | ||
86 | MCDI_SET_DWORD(inbuf, SET_LINK_IN_CAP, capabilities); | |
87 | MCDI_SET_DWORD(inbuf, SET_LINK_IN_FLAGS, flags); | |
88 | MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_MODE, loopback_mode); | |
89 | MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_SPEED, loopback_speed); | |
90 | ||
91 | rc = efx_mcdi_rpc(efx, MC_CMD_SET_LINK, inbuf, sizeof(inbuf), | |
92 | NULL, 0, NULL); | |
93 | if (rc) | |
94 | goto fail; | |
95 | ||
96 | return 0; | |
97 | ||
98 | fail: | |
62776d03 | 99 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
100 | return rc; |
101 | } | |
102 | ||
103 | static int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes) | |
104 | { | |
105 | u8 outbuf[MC_CMD_GET_LOOPBACK_MODES_OUT_LEN]; | |
106 | size_t outlen; | |
107 | int rc; | |
108 | ||
109 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_LOOPBACK_MODES, NULL, 0, | |
110 | outbuf, sizeof(outbuf), &outlen); | |
111 | if (rc) | |
112 | goto fail; | |
113 | ||
114 | if (outlen < MC_CMD_GET_LOOPBACK_MODES_OUT_LEN) { | |
00bbb4a5 | 115 | rc = -EIO; |
afd4aea0 BH |
116 | goto fail; |
117 | } | |
118 | ||
05a9320f | 119 | *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_OUT_SUGGESTED); |
afd4aea0 BH |
120 | |
121 | return 0; | |
122 | ||
123 | fail: | |
62776d03 | 124 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
125 | return rc; |
126 | } | |
127 | ||
128 | int efx_mcdi_mdio_read(struct efx_nic *efx, unsigned int bus, | |
129 | unsigned int prtad, unsigned int devad, u16 addr, | |
130 | u16 *value_out, u32 *status_out) | |
131 | { | |
132 | u8 inbuf[MC_CMD_MDIO_READ_IN_LEN]; | |
133 | u8 outbuf[MC_CMD_MDIO_READ_OUT_LEN]; | |
134 | size_t outlen; | |
135 | int rc; | |
136 | ||
137 | MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, bus); | |
138 | MCDI_SET_DWORD(inbuf, MDIO_READ_IN_PRTAD, prtad); | |
139 | MCDI_SET_DWORD(inbuf, MDIO_READ_IN_DEVAD, devad); | |
140 | MCDI_SET_DWORD(inbuf, MDIO_READ_IN_ADDR, addr); | |
141 | ||
142 | rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_READ, inbuf, sizeof(inbuf), | |
143 | outbuf, sizeof(outbuf), &outlen); | |
144 | if (rc) | |
145 | goto fail; | |
146 | ||
147 | *value_out = (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE); | |
148 | *status_out = MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS); | |
149 | return 0; | |
150 | ||
151 | fail: | |
62776d03 | 152 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
153 | return rc; |
154 | } | |
155 | ||
156 | int efx_mcdi_mdio_write(struct efx_nic *efx, unsigned int bus, | |
157 | unsigned int prtad, unsigned int devad, u16 addr, | |
158 | u16 value, u32 *status_out) | |
159 | { | |
160 | u8 inbuf[MC_CMD_MDIO_WRITE_IN_LEN]; | |
161 | u8 outbuf[MC_CMD_MDIO_WRITE_OUT_LEN]; | |
162 | size_t outlen; | |
163 | int rc; | |
164 | ||
165 | MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, bus); | |
166 | MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_PRTAD, prtad); | |
167 | MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_DEVAD, devad); | |
168 | MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_ADDR, addr); | |
169 | MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_VALUE, value); | |
170 | ||
171 | rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_WRITE, inbuf, sizeof(inbuf), | |
172 | outbuf, sizeof(outbuf), &outlen); | |
173 | if (rc) | |
174 | goto fail; | |
175 | ||
176 | *status_out = MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS); | |
177 | return 0; | |
178 | ||
179 | fail: | |
62776d03 | 180 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc); |
afd4aea0 BH |
181 | return rc; |
182 | } | |
183 | ||
184 | static u32 mcdi_to_ethtool_cap(u32 media, u32 cap) | |
185 | { | |
186 | u32 result = 0; | |
187 | ||
188 | switch (media) { | |
189 | case MC_CMD_MEDIA_KX4: | |
190 | result |= SUPPORTED_Backplane; | |
191 | if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) | |
192 | result |= SUPPORTED_1000baseKX_Full; | |
193 | if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) | |
194 | result |= SUPPORTED_10000baseKX4_Full; | |
195 | break; | |
196 | ||
197 | case MC_CMD_MEDIA_XFP: | |
198 | case MC_CMD_MEDIA_SFP_PLUS: | |
199 | result |= SUPPORTED_FIBRE; | |
200 | break; | |
201 | ||
202 | case MC_CMD_MEDIA_BASE_T: | |
203 | result |= SUPPORTED_TP; | |
204 | if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN)) | |
205 | result |= SUPPORTED_10baseT_Half; | |
206 | if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN)) | |
207 | result |= SUPPORTED_10baseT_Full; | |
208 | if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN)) | |
209 | result |= SUPPORTED_100baseT_Half; | |
210 | if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN)) | |
211 | result |= SUPPORTED_100baseT_Full; | |
212 | if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN)) | |
213 | result |= SUPPORTED_1000baseT_Half; | |
214 | if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) | |
215 | result |= SUPPORTED_1000baseT_Full; | |
216 | if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) | |
217 | result |= SUPPORTED_10000baseT_Full; | |
218 | break; | |
219 | } | |
220 | ||
221 | if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) | |
222 | result |= SUPPORTED_Pause; | |
223 | if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) | |
224 | result |= SUPPORTED_Asym_Pause; | |
225 | if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) | |
226 | result |= SUPPORTED_Autoneg; | |
227 | ||
228 | return result; | |
229 | } | |
230 | ||
231 | static u32 ethtool_to_mcdi_cap(u32 cap) | |
232 | { | |
233 | u32 result = 0; | |
234 | ||
235 | if (cap & SUPPORTED_10baseT_Half) | |
236 | result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN); | |
237 | if (cap & SUPPORTED_10baseT_Full) | |
238 | result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN); | |
239 | if (cap & SUPPORTED_100baseT_Half) | |
240 | result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN); | |
241 | if (cap & SUPPORTED_100baseT_Full) | |
242 | result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN); | |
243 | if (cap & SUPPORTED_1000baseT_Half) | |
244 | result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN); | |
245 | if (cap & (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseKX_Full)) | |
246 | result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN); | |
247 | if (cap & (SUPPORTED_10000baseT_Full | SUPPORTED_10000baseKX4_Full)) | |
248 | result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN); | |
249 | if (cap & SUPPORTED_Pause) | |
250 | result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN); | |
251 | if (cap & SUPPORTED_Asym_Pause) | |
252 | result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN); | |
253 | if (cap & SUPPORTED_Autoneg) | |
254 | result |= (1 << MC_CMD_PHY_CAP_AN_LBN); | |
255 | ||
256 | return result; | |
257 | } | |
258 | ||
259 | static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx) | |
260 | { | |
3bd93035 | 261 | struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; |
afd4aea0 BH |
262 | enum efx_phy_mode mode, supported; |
263 | u32 flags; | |
264 | ||
265 | /* TODO: Advertise the capabilities supported by this PHY */ | |
266 | supported = 0; | |
05a9320f | 267 | if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_TXDIS_LBN)) |
afd4aea0 | 268 | supported |= PHY_MODE_TX_DISABLED; |
05a9320f | 269 | if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_LOWPOWER_LBN)) |
afd4aea0 | 270 | supported |= PHY_MODE_LOW_POWER; |
05a9320f | 271 | if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_POWEROFF_LBN)) |
afd4aea0 BH |
272 | supported |= PHY_MODE_OFF; |
273 | ||
274 | mode = efx->phy_mode & supported; | |
275 | ||
276 | flags = 0; | |
277 | if (mode & PHY_MODE_TX_DISABLED) | |
05a9320f | 278 | flags |= (1 << MC_CMD_SET_LINK_IN_TXDIS_LBN); |
afd4aea0 | 279 | if (mode & PHY_MODE_LOW_POWER) |
05a9320f | 280 | flags |= (1 << MC_CMD_SET_LINK_IN_LOWPOWER_LBN); |
afd4aea0 | 281 | if (mode & PHY_MODE_OFF) |
05a9320f | 282 | flags |= (1 << MC_CMD_SET_LINK_IN_POWEROFF_LBN); |
afd4aea0 BH |
283 | |
284 | return flags; | |
285 | } | |
286 | ||
287 | static u32 mcdi_to_ethtool_media(u32 media) | |
288 | { | |
289 | switch (media) { | |
290 | case MC_CMD_MEDIA_XAUI: | |
291 | case MC_CMD_MEDIA_CX4: | |
292 | case MC_CMD_MEDIA_KX4: | |
293 | return PORT_OTHER; | |
294 | ||
295 | case MC_CMD_MEDIA_XFP: | |
296 | case MC_CMD_MEDIA_SFP_PLUS: | |
297 | return PORT_FIBRE; | |
298 | ||
299 | case MC_CMD_MEDIA_BASE_T: | |
300 | return PORT_TP; | |
301 | ||
302 | default: | |
303 | return PORT_OTHER; | |
304 | } | |
305 | } | |
306 | ||
307 | static int efx_mcdi_phy_probe(struct efx_nic *efx) | |
308 | { | |
3bd93035 | 309 | struct efx_mcdi_phy_data *phy_data; |
ff3b00a0 SH |
310 | u8 outbuf[MC_CMD_GET_LINK_OUT_LEN]; |
311 | u32 caps; | |
afd4aea0 BH |
312 | int rc; |
313 | ||
ff3b00a0 SH |
314 | /* Initialise and populate phy_data */ |
315 | phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL); | |
316 | if (phy_data == NULL) | |
317 | return -ENOMEM; | |
318 | ||
319 | rc = efx_mcdi_get_phy_cfg(efx, phy_data); | |
afd4aea0 BH |
320 | if (rc != 0) |
321 | goto fail; | |
322 | ||
ff3b00a0 SH |
323 | /* Read initial link advertisement */ |
324 | BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); | |
325 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, | |
326 | outbuf, sizeof(outbuf), NULL); | |
327 | if (rc) | |
328 | goto fail; | |
329 | ||
330 | /* Fill out nic state */ | |
331 | efx->phy_data = phy_data; | |
332 | efx->phy_type = phy_data->type; | |
afd4aea0 | 333 | |
ff3b00a0 SH |
334 | efx->mdio_bus = phy_data->channel; |
335 | efx->mdio.prtad = phy_data->port; | |
336 | efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22); | |
afd4aea0 | 337 | efx->mdio.mode_support = 0; |
ff3b00a0 | 338 | if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22)) |
afd4aea0 | 339 | efx->mdio.mode_support |= MDIO_SUPPORTS_C22; |
ff3b00a0 | 340 | if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22)) |
afd4aea0 BH |
341 | efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; |
342 | ||
ff3b00a0 SH |
343 | caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP); |
344 | if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN)) | |
345 | efx->link_advertising = | |
346 | mcdi_to_ethtool_cap(phy_data->media, caps); | |
347 | else | |
348 | phy_data->forced_cap = caps; | |
349 | ||
afd4aea0 BH |
350 | /* Assert that we can map efx -> mcdi loopback modes */ |
351 | BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE); | |
352 | BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA); | |
353 | BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC); | |
354 | BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII); | |
355 | BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS); | |
356 | BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI); | |
357 | BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII); | |
358 | BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII); | |
359 | BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR); | |
360 | BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI); | |
361 | BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR); | |
362 | BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR); | |
363 | BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR); | |
364 | BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR); | |
365 | BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY); | |
366 | BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS); | |
367 | BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS); | |
368 | BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD); | |
369 | BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT); | |
370 | BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS); | |
371 | BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS); | |
372 | BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR); | |
373 | BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR); | |
374 | BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS); | |
375 | BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS); | |
376 | BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR); | |
377 | BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS); | |
378 | ||
379 | rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes); | |
380 | if (rc != 0) | |
381 | goto fail; | |
382 | /* The MC indicates that LOOPBACK_NONE is a valid loopback mode, | |
383 | * but by convention we don't */ | |
384 | efx->loopback_modes &= ~(1 << LOOPBACK_NONE); | |
385 | ||
7a6b8f6f SH |
386 | /* Set the initial link mode */ |
387 | efx_mcdi_phy_decode_link( | |
388 | efx, &efx->link_state, | |
389 | MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), | |
390 | MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), | |
391 | MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); | |
392 | ||
393 | /* Default to Autonegotiated flow control if the PHY supports it */ | |
394 | efx->wanted_fc = EFX_FC_RX | EFX_FC_TX; | |
395 | if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) | |
396 | efx->wanted_fc |= EFX_FC_AUTO; | |
cffe9d4c | 397 | efx_link_set_wanted_fc(efx, efx->wanted_fc); |
7a6b8f6f | 398 | |
afd4aea0 BH |
399 | return 0; |
400 | ||
401 | fail: | |
402 | kfree(phy_data); | |
403 | return rc; | |
404 | } | |
405 | ||
406 | int efx_mcdi_phy_reconfigure(struct efx_nic *efx) | |
407 | { | |
3bd93035 | 408 | struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; |
afd4aea0 BH |
409 | u32 caps = (efx->link_advertising ? |
410 | ethtool_to_mcdi_cap(efx->link_advertising) : | |
411 | phy_cfg->forced_cap); | |
412 | ||
413 | return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), | |
414 | efx->loopback_mode, 0); | |
415 | } | |
416 | ||
417 | void efx_mcdi_phy_decode_link(struct efx_nic *efx, | |
418 | struct efx_link_state *link_state, | |
419 | u32 speed, u32 flags, u32 fcntl) | |
420 | { | |
421 | switch (fcntl) { | |
422 | case MC_CMD_FCNTL_AUTO: | |
423 | WARN_ON(1); /* This is not a link mode */ | |
424 | link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX; | |
425 | break; | |
426 | case MC_CMD_FCNTL_BIDIR: | |
427 | link_state->fc = EFX_FC_TX | EFX_FC_RX; | |
428 | break; | |
429 | case MC_CMD_FCNTL_RESPOND: | |
430 | link_state->fc = EFX_FC_RX; | |
431 | break; | |
432 | default: | |
433 | WARN_ON(1); | |
434 | case MC_CMD_FCNTL_OFF: | |
435 | link_state->fc = 0; | |
436 | break; | |
437 | } | |
438 | ||
05a9320f BH |
439 | link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_OUT_LINK_UP_LBN)); |
440 | link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_OUT_FULL_DUPLEX_LBN)); | |
afd4aea0 BH |
441 | link_state->speed = speed; |
442 | } | |
443 | ||
444 | /* Verify that the forced flow control settings (!EFX_FC_AUTO) are | |
445 | * supported by the link partner. Warn the user if this isn't the case | |
446 | */ | |
447 | void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa) | |
448 | { | |
3bd93035 | 449 | struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; |
afd4aea0 BH |
450 | u32 rmtadv; |
451 | ||
25985edc | 452 | /* The link partner capabilities are only relevant if the |
afd4aea0 | 453 | * link supports flow control autonegotiation */ |
7a6b8f6f | 454 | if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) |
afd4aea0 BH |
455 | return; |
456 | ||
457 | /* If flow control autoneg is supported and enabled, then fine */ | |
458 | if (efx->wanted_fc & EFX_FC_AUTO) | |
459 | return; | |
460 | ||
461 | rmtadv = 0; | |
462 | if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) | |
463 | rmtadv |= ADVERTISED_Pause; | |
464 | if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) | |
465 | rmtadv |= ADVERTISED_Asym_Pause; | |
466 | ||
467 | if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause) | |
62776d03 BH |
468 | netif_err(efx, link, efx->net_dev, |
469 | "warning: link partner doesn't support pause frames"); | |
afd4aea0 BH |
470 | } |
471 | ||
472 | static bool efx_mcdi_phy_poll(struct efx_nic *efx) | |
473 | { | |
474 | struct efx_link_state old_state = efx->link_state; | |
475 | u8 outbuf[MC_CMD_GET_LINK_OUT_LEN]; | |
476 | int rc; | |
477 | ||
478 | WARN_ON(!mutex_is_locked(&efx->mac_lock)); | |
479 | ||
480 | BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); | |
481 | ||
482 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, | |
483 | outbuf, sizeof(outbuf), NULL); | |
484 | if (rc) { | |
62776d03 BH |
485 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", |
486 | __func__, rc); | |
afd4aea0 BH |
487 | efx->link_state.up = false; |
488 | } else { | |
489 | efx_mcdi_phy_decode_link( | |
490 | efx, &efx->link_state, | |
491 | MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), | |
492 | MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), | |
493 | MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); | |
494 | } | |
495 | ||
496 | return !efx_link_state_equal(&efx->link_state, &old_state); | |
497 | } | |
498 | ||
ff3b00a0 | 499 | static void efx_mcdi_phy_remove(struct efx_nic *efx) |
afd4aea0 BH |
500 | { |
501 | struct efx_mcdi_phy_data *phy_data = efx->phy_data; | |
502 | ||
503 | efx->phy_data = NULL; | |
504 | kfree(phy_data); | |
505 | } | |
506 | ||
507 | static void efx_mcdi_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd) | |
508 | { | |
3bd93035 | 509 | struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; |
afd4aea0 BH |
510 | u8 outbuf[MC_CMD_GET_LINK_OUT_LEN]; |
511 | int rc; | |
512 | ||
513 | ecmd->supported = | |
514 | mcdi_to_ethtool_cap(phy_cfg->media, phy_cfg->supported_cap); | |
515 | ecmd->advertising = efx->link_advertising; | |
70739497 | 516 | ethtool_cmd_speed_set(ecmd, efx->link_state.speed); |
afd4aea0 BH |
517 | ecmd->duplex = efx->link_state.fd; |
518 | ecmd->port = mcdi_to_ethtool_media(phy_cfg->media); | |
519 | ecmd->phy_address = phy_cfg->port; | |
520 | ecmd->transceiver = XCVR_INTERNAL; | |
521 | ecmd->autoneg = !!(efx->link_advertising & ADVERTISED_Autoneg); | |
522 | ecmd->mdio_support = (efx->mdio.mode_support & | |
523 | (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22)); | |
524 | ||
525 | BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); | |
526 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, | |
527 | outbuf, sizeof(outbuf), NULL); | |
528 | if (rc) { | |
62776d03 BH |
529 | netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", |
530 | __func__, rc); | |
afd4aea0 BH |
531 | return; |
532 | } | |
533 | ecmd->lp_advertising = | |
534 | mcdi_to_ethtool_cap(phy_cfg->media, | |
535 | MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP)); | |
536 | } | |
537 | ||
538 | static int efx_mcdi_phy_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd) | |
539 | { | |
3bd93035 | 540 | struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; |
afd4aea0 BH |
541 | u32 caps; |
542 | int rc; | |
543 | ||
544 | if (ecmd->autoneg) { | |
545 | caps = (ethtool_to_mcdi_cap(ecmd->advertising) | | |
546 | 1 << MC_CMD_PHY_CAP_AN_LBN); | |
547 | } else if (ecmd->duplex) { | |
25db0338 | 548 | switch (ethtool_cmd_speed(ecmd)) { |
afd4aea0 BH |
549 | case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break; |
550 | case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break; | |
551 | case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break; | |
552 | case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break; | |
553 | default: return -EINVAL; | |
554 | } | |
555 | } else { | |
25db0338 | 556 | switch (ethtool_cmd_speed(ecmd)) { |
afd4aea0 BH |
557 | case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break; |
558 | case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break; | |
559 | case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break; | |
560 | default: return -EINVAL; | |
561 | } | |
562 | } | |
563 | ||
564 | rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), | |
565 | efx->loopback_mode, 0); | |
566 | if (rc) | |
567 | return rc; | |
568 | ||
569 | if (ecmd->autoneg) { | |
570 | efx_link_set_advertising( | |
571 | efx, ecmd->advertising | ADVERTISED_Autoneg); | |
572 | phy_cfg->forced_cap = 0; | |
573 | } else { | |
574 | efx_link_set_advertising(efx, 0); | |
575 | phy_cfg->forced_cap = caps; | |
576 | } | |
577 | return 0; | |
578 | } | |
579 | ||
4f16c073 BH |
580 | static int efx_mcdi_phy_test_alive(struct efx_nic *efx) |
581 | { | |
582 | u8 outbuf[MC_CMD_GET_PHY_STATE_OUT_LEN]; | |
583 | size_t outlen; | |
584 | int rc; | |
585 | ||
586 | BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0); | |
587 | ||
588 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0, | |
589 | outbuf, sizeof(outbuf), &outlen); | |
590 | if (rc) | |
591 | return rc; | |
592 | ||
593 | if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN) | |
00bbb4a5 | 594 | return -EIO; |
05a9320f | 595 | if (MCDI_DWORD(outbuf, GET_PHY_STATE_OUT_STATE) != MC_CMD_PHY_STATE_OK) |
4f16c073 BH |
596 | return -EINVAL; |
597 | ||
598 | return 0; | |
599 | } | |
600 | ||
affaf485 SH |
601 | static const char *const mcdi_sft9001_cable_diag_names[] = { |
602 | "cable.pairA.length", | |
603 | "cable.pairB.length", | |
604 | "cable.pairC.length", | |
605 | "cable.pairD.length", | |
606 | "cable.pairA.status", | |
607 | "cable.pairB.status", | |
608 | "cable.pairC.status", | |
609 | "cable.pairD.status", | |
610 | }; | |
611 | ||
612 | static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode, | |
613 | int *results) | |
614 | { | |
615 | unsigned int retry, i, count = 0; | |
616 | size_t outlen; | |
617 | u32 status; | |
618 | u8 *buf, *ptr; | |
619 | int rc; | |
620 | ||
621 | buf = kzalloc(0x100, GFP_KERNEL); | |
622 | if (buf == NULL) | |
623 | return -ENOMEM; | |
624 | ||
625 | BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0); | |
626 | MCDI_SET_DWORD(buf, START_BIST_IN_TYPE, bist_mode); | |
627 | rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST, buf, MC_CMD_START_BIST_IN_LEN, | |
628 | NULL, 0, NULL); | |
629 | if (rc) | |
630 | goto out; | |
631 | ||
632 | /* Wait up to 10s for BIST to finish */ | |
633 | for (retry = 0; retry < 100; ++retry) { | |
634 | BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0); | |
635 | rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0, | |
636 | buf, 0x100, &outlen); | |
637 | if (rc) | |
638 | goto out; | |
639 | ||
640 | status = MCDI_DWORD(buf, POLL_BIST_OUT_RESULT); | |
641 | if (status != MC_CMD_POLL_BIST_RUNNING) | |
642 | goto finished; | |
643 | ||
644 | msleep(100); | |
645 | } | |
646 | ||
647 | rc = -ETIMEDOUT; | |
648 | goto out; | |
649 | ||
650 | finished: | |
651 | results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1; | |
652 | ||
653 | /* SFT9001 specific cable diagnostics output */ | |
654 | if (efx->phy_type == PHY_TYPE_SFT9001B && | |
655 | (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT || | |
656 | bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) { | |
657 | ptr = MCDI_PTR(buf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A); | |
658 | if (status == MC_CMD_POLL_BIST_PASSED && | |
659 | outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) { | |
660 | for (i = 0; i < 8; i++) { | |
661 | results[count + i] = | |
662 | EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i], | |
663 | EFX_DWORD_0); | |
664 | } | |
665 | } | |
666 | count += 8; | |
667 | } | |
668 | rc = count; | |
669 | ||
670 | out: | |
671 | kfree(buf); | |
672 | ||
673 | return rc; | |
674 | } | |
675 | ||
676 | static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results, | |
677 | unsigned flags) | |
678 | { | |
3bd93035 | 679 | struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; |
affaf485 SH |
680 | u32 mode; |
681 | int rc; | |
682 | ||
05a9320f | 683 | if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) { |
affaf485 SH |
684 | rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results); |
685 | if (rc < 0) | |
686 | return rc; | |
687 | ||
688 | results += rc; | |
689 | } | |
690 | ||
691 | /* If we support both LONG and SHORT, then run each in response to | |
692 | * break or not. Otherwise, run the one we support */ | |
693 | mode = 0; | |
05a9320f | 694 | if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) { |
affaf485 SH |
695 | if ((flags & ETH_TEST_FL_OFFLINE) && |
696 | (phy_cfg->flags & | |
05a9320f | 697 | (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) |
affaf485 SH |
698 | mode = MC_CMD_PHY_BIST_CABLE_LONG; |
699 | else | |
700 | mode = MC_CMD_PHY_BIST_CABLE_SHORT; | |
701 | } else if (phy_cfg->flags & | |
05a9320f | 702 | (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)) |
affaf485 SH |
703 | mode = MC_CMD_PHY_BIST_CABLE_LONG; |
704 | ||
705 | if (mode != 0) { | |
706 | rc = efx_mcdi_bist(efx, mode, results); | |
707 | if (rc < 0) | |
708 | return rc; | |
709 | results += rc; | |
710 | } | |
711 | ||
712 | return 0; | |
713 | } | |
714 | ||
d215697f | 715 | static const char *efx_mcdi_phy_test_name(struct efx_nic *efx, |
716 | unsigned int index) | |
affaf485 | 717 | { |
3bd93035 | 718 | struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; |
affaf485 | 719 | |
05a9320f | 720 | if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) { |
affaf485 SH |
721 | if (index == 0) |
722 | return "bist"; | |
723 | --index; | |
724 | } | |
725 | ||
05a9320f BH |
726 | if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) | |
727 | (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) { | |
affaf485 SH |
728 | if (index == 0) |
729 | return "cable"; | |
730 | --index; | |
731 | ||
732 | if (efx->phy_type == PHY_TYPE_SFT9001B) { | |
733 | if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names)) | |
734 | return mcdi_sft9001_cable_diag_names[index]; | |
735 | index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names); | |
736 | } | |
737 | } | |
738 | ||
739 | return NULL; | |
740 | } | |
741 | ||
c087bd2c SH |
742 | #define SFP_PAGE_SIZE 128 |
743 | #define SFP_NUM_PAGES 2 | |
744 | static int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx, | |
745 | struct ethtool_eeprom *ee, u8 *data) | |
746 | { | |
747 | u8 outbuf[MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX]; | |
748 | u8 inbuf[MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN]; | |
749 | size_t outlen; | |
750 | int rc; | |
751 | unsigned int payload_len; | |
752 | unsigned int space_remaining = ee->len; | |
753 | unsigned int page; | |
754 | unsigned int page_off; | |
755 | unsigned int to_copy; | |
756 | u8 *user_data = data; | |
757 | ||
758 | BUILD_BUG_ON(SFP_PAGE_SIZE * SFP_NUM_PAGES != ETH_MODULE_SFF_8079_LEN); | |
759 | ||
760 | page_off = ee->offset % SFP_PAGE_SIZE; | |
761 | page = ee->offset / SFP_PAGE_SIZE; | |
762 | ||
763 | while (space_remaining && (page < SFP_NUM_PAGES)) { | |
764 | MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page); | |
765 | ||
766 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_MEDIA_INFO, | |
767 | inbuf, sizeof(inbuf), | |
768 | outbuf, sizeof(outbuf), | |
769 | &outlen); | |
770 | if (rc) | |
771 | return rc; | |
772 | ||
773 | if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST + | |
774 | SFP_PAGE_SIZE)) | |
775 | return -EIO; | |
776 | ||
777 | payload_len = MCDI_DWORD(outbuf, | |
778 | GET_PHY_MEDIA_INFO_OUT_DATALEN); | |
779 | if (payload_len != SFP_PAGE_SIZE) | |
780 | return -EIO; | |
781 | ||
782 | /* Copy as much as we can into data */ | |
783 | payload_len -= page_off; | |
784 | to_copy = (space_remaining < payload_len) ? | |
785 | space_remaining : payload_len; | |
786 | ||
787 | memcpy(user_data, | |
788 | outbuf + page_off + | |
789 | MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST, | |
790 | to_copy); | |
791 | ||
792 | space_remaining -= to_copy; | |
793 | user_data += to_copy; | |
794 | page_off = 0; | |
795 | page++; | |
796 | } | |
797 | ||
798 | return 0; | |
799 | } | |
800 | ||
801 | static int efx_mcdi_phy_get_module_info(struct efx_nic *efx, | |
802 | struct ethtool_modinfo *modinfo) | |
803 | { | |
804 | struct efx_mcdi_phy_data *phy_cfg = efx->phy_data; | |
805 | ||
806 | switch (phy_cfg->media) { | |
807 | case MC_CMD_MEDIA_SFP_PLUS: | |
808 | modinfo->type = ETH_MODULE_SFF_8079; | |
809 | modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN; | |
810 | return 0; | |
811 | default: | |
812 | return -EOPNOTSUPP; | |
813 | } | |
814 | } | |
815 | ||
6c8c2513 | 816 | const struct efx_phy_operations efx_mcdi_phy_ops = { |
afd4aea0 | 817 | .probe = efx_mcdi_phy_probe, |
9c636baf | 818 | .init = efx_port_dummy_op_int, |
afd4aea0 BH |
819 | .reconfigure = efx_mcdi_phy_reconfigure, |
820 | .poll = efx_mcdi_phy_poll, | |
ff3b00a0 SH |
821 | .fini = efx_port_dummy_op_void, |
822 | .remove = efx_mcdi_phy_remove, | |
afd4aea0 BH |
823 | .get_settings = efx_mcdi_phy_get_settings, |
824 | .set_settings = efx_mcdi_phy_set_settings, | |
4f16c073 | 825 | .test_alive = efx_mcdi_phy_test_alive, |
affaf485 SH |
826 | .run_tests = efx_mcdi_phy_run_tests, |
827 | .test_name = efx_mcdi_phy_test_name, | |
c087bd2c SH |
828 | .get_module_eeprom = efx_mcdi_phy_get_module_eeprom, |
829 | .get_module_info = efx_mcdi_phy_get_module_info, | |
afd4aea0 | 830 | }; |