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afd4aea0 BH |
1 | /**************************************************************************** |
2 | * Driver for Solarflare Solarstorm network controllers and boards | |
3 | * Copyright 2009 Solarflare Communications Inc. | |
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" | |
19 | #include "mdio_10g.h" | |
20 | ||
21 | struct efx_mcdi_phy_cfg { | |
22 | u32 flags; | |
23 | u32 type; | |
24 | u32 supported_cap; | |
25 | u32 channel; | |
26 | u32 port; | |
27 | u32 stats_mask; | |
28 | u8 name[20]; | |
29 | u32 media; | |
30 | u32 mmd_mask; | |
31 | u8 revision[20]; | |
32 | u32 forced_cap; | |
33 | }; | |
34 | ||
35 | static int | |
36 | efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_cfg *cfg) | |
37 | { | |
38 | u8 outbuf[MC_CMD_GET_PHY_CFG_OUT_LEN]; | |
39 | size_t outlen; | |
40 | int rc; | |
41 | ||
42 | BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_IN_LEN != 0); | |
43 | BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_OUT_NAME_LEN != sizeof(cfg->name)); | |
44 | ||
45 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_CFG, NULL, 0, | |
46 | outbuf, sizeof(outbuf), &outlen); | |
47 | if (rc) | |
48 | goto fail; | |
49 | ||
50 | if (outlen < MC_CMD_GET_PHY_CFG_OUT_LEN) { | |
51 | rc = -EMSGSIZE; | |
52 | goto fail; | |
53 | } | |
54 | ||
55 | cfg->flags = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_FLAGS); | |
56 | cfg->type = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_TYPE); | |
57 | cfg->supported_cap = | |
58 | MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_SUPPORTED_CAP); | |
59 | cfg->channel = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_CHANNEL); | |
60 | cfg->port = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_PRT); | |
61 | cfg->stats_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_STATS_MASK); | |
62 | memcpy(cfg->name, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_NAME), | |
63 | sizeof(cfg->name)); | |
64 | cfg->media = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MEDIA_TYPE); | |
65 | cfg->mmd_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MMD_MASK); | |
66 | memcpy(cfg->revision, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_REVISION), | |
67 | sizeof(cfg->revision)); | |
68 | ||
69 | return 0; | |
70 | ||
71 | fail: | |
72 | EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc); | |
73 | return rc; | |
74 | } | |
75 | ||
76 | static int efx_mcdi_set_link(struct efx_nic *efx, u32 capabilities, | |
77 | u32 flags, u32 loopback_mode, | |
78 | u32 loopback_speed) | |
79 | { | |
80 | u8 inbuf[MC_CMD_SET_LINK_IN_LEN]; | |
81 | int rc; | |
82 | ||
83 | BUILD_BUG_ON(MC_CMD_SET_LINK_OUT_LEN != 0); | |
84 | ||
85 | MCDI_SET_DWORD(inbuf, SET_LINK_IN_CAP, capabilities); | |
86 | MCDI_SET_DWORD(inbuf, SET_LINK_IN_FLAGS, flags); | |
87 | MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_MODE, loopback_mode); | |
88 | MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_SPEED, loopback_speed); | |
89 | ||
90 | rc = efx_mcdi_rpc(efx, MC_CMD_SET_LINK, inbuf, sizeof(inbuf), | |
91 | NULL, 0, NULL); | |
92 | if (rc) | |
93 | goto fail; | |
94 | ||
95 | return 0; | |
96 | ||
97 | fail: | |
98 | EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc); | |
99 | return rc; | |
100 | } | |
101 | ||
102 | static int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes) | |
103 | { | |
104 | u8 outbuf[MC_CMD_GET_LOOPBACK_MODES_OUT_LEN]; | |
105 | size_t outlen; | |
106 | int rc; | |
107 | ||
108 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_LOOPBACK_MODES, NULL, 0, | |
109 | outbuf, sizeof(outbuf), &outlen); | |
110 | if (rc) | |
111 | goto fail; | |
112 | ||
113 | if (outlen < MC_CMD_GET_LOOPBACK_MODES_OUT_LEN) { | |
114 | rc = -EMSGSIZE; | |
115 | goto fail; | |
116 | } | |
117 | ||
118 | *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_SUGGESTED); | |
119 | ||
120 | return 0; | |
121 | ||
122 | fail: | |
123 | EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc); | |
124 | return rc; | |
125 | } | |
126 | ||
127 | int efx_mcdi_mdio_read(struct efx_nic *efx, unsigned int bus, | |
128 | unsigned int prtad, unsigned int devad, u16 addr, | |
129 | u16 *value_out, u32 *status_out) | |
130 | { | |
131 | u8 inbuf[MC_CMD_MDIO_READ_IN_LEN]; | |
132 | u8 outbuf[MC_CMD_MDIO_READ_OUT_LEN]; | |
133 | size_t outlen; | |
134 | int rc; | |
135 | ||
136 | MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, bus); | |
137 | MCDI_SET_DWORD(inbuf, MDIO_READ_IN_PRTAD, prtad); | |
138 | MCDI_SET_DWORD(inbuf, MDIO_READ_IN_DEVAD, devad); | |
139 | MCDI_SET_DWORD(inbuf, MDIO_READ_IN_ADDR, addr); | |
140 | ||
141 | rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_READ, inbuf, sizeof(inbuf), | |
142 | outbuf, sizeof(outbuf), &outlen); | |
143 | if (rc) | |
144 | goto fail; | |
145 | ||
146 | *value_out = (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE); | |
147 | *status_out = MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS); | |
148 | return 0; | |
149 | ||
150 | fail: | |
151 | EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc); | |
152 | return rc; | |
153 | } | |
154 | ||
155 | int efx_mcdi_mdio_write(struct efx_nic *efx, unsigned int bus, | |
156 | unsigned int prtad, unsigned int devad, u16 addr, | |
157 | u16 value, u32 *status_out) | |
158 | { | |
159 | u8 inbuf[MC_CMD_MDIO_WRITE_IN_LEN]; | |
160 | u8 outbuf[MC_CMD_MDIO_WRITE_OUT_LEN]; | |
161 | size_t outlen; | |
162 | int rc; | |
163 | ||
164 | MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, bus); | |
165 | MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_PRTAD, prtad); | |
166 | MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_DEVAD, devad); | |
167 | MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_ADDR, addr); | |
168 | MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_VALUE, value); | |
169 | ||
170 | rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_WRITE, inbuf, sizeof(inbuf), | |
171 | outbuf, sizeof(outbuf), &outlen); | |
172 | if (rc) | |
173 | goto fail; | |
174 | ||
175 | *status_out = MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS); | |
176 | return 0; | |
177 | ||
178 | fail: | |
179 | EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc); | |
180 | return rc; | |
181 | } | |
182 | ||
183 | static u32 mcdi_to_ethtool_cap(u32 media, u32 cap) | |
184 | { | |
185 | u32 result = 0; | |
186 | ||
187 | switch (media) { | |
188 | case MC_CMD_MEDIA_KX4: | |
189 | result |= SUPPORTED_Backplane; | |
190 | if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) | |
191 | result |= SUPPORTED_1000baseKX_Full; | |
192 | if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) | |
193 | result |= SUPPORTED_10000baseKX4_Full; | |
194 | break; | |
195 | ||
196 | case MC_CMD_MEDIA_XFP: | |
197 | case MC_CMD_MEDIA_SFP_PLUS: | |
198 | result |= SUPPORTED_FIBRE; | |
199 | break; | |
200 | ||
201 | case MC_CMD_MEDIA_BASE_T: | |
202 | result |= SUPPORTED_TP; | |
203 | if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN)) | |
204 | result |= SUPPORTED_10baseT_Half; | |
205 | if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN)) | |
206 | result |= SUPPORTED_10baseT_Full; | |
207 | if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN)) | |
208 | result |= SUPPORTED_100baseT_Half; | |
209 | if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN)) | |
210 | result |= SUPPORTED_100baseT_Full; | |
211 | if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN)) | |
212 | result |= SUPPORTED_1000baseT_Half; | |
213 | if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN)) | |
214 | result |= SUPPORTED_1000baseT_Full; | |
215 | if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN)) | |
216 | result |= SUPPORTED_10000baseT_Full; | |
217 | break; | |
218 | } | |
219 | ||
220 | if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) | |
221 | result |= SUPPORTED_Pause; | |
222 | if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) | |
223 | result |= SUPPORTED_Asym_Pause; | |
224 | if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) | |
225 | result |= SUPPORTED_Autoneg; | |
226 | ||
227 | return result; | |
228 | } | |
229 | ||
230 | static u32 ethtool_to_mcdi_cap(u32 cap) | |
231 | { | |
232 | u32 result = 0; | |
233 | ||
234 | if (cap & SUPPORTED_10baseT_Half) | |
235 | result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN); | |
236 | if (cap & SUPPORTED_10baseT_Full) | |
237 | result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN); | |
238 | if (cap & SUPPORTED_100baseT_Half) | |
239 | result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN); | |
240 | if (cap & SUPPORTED_100baseT_Full) | |
241 | result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN); | |
242 | if (cap & SUPPORTED_1000baseT_Half) | |
243 | result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN); | |
244 | if (cap & (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseKX_Full)) | |
245 | result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN); | |
246 | if (cap & (SUPPORTED_10000baseT_Full | SUPPORTED_10000baseKX4_Full)) | |
247 | result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN); | |
248 | if (cap & SUPPORTED_Pause) | |
249 | result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN); | |
250 | if (cap & SUPPORTED_Asym_Pause) | |
251 | result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN); | |
252 | if (cap & SUPPORTED_Autoneg) | |
253 | result |= (1 << MC_CMD_PHY_CAP_AN_LBN); | |
254 | ||
255 | return result; | |
256 | } | |
257 | ||
258 | static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx) | |
259 | { | |
260 | struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data; | |
261 | enum efx_phy_mode mode, supported; | |
262 | u32 flags; | |
263 | ||
264 | /* TODO: Advertise the capabilities supported by this PHY */ | |
265 | supported = 0; | |
266 | if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_TXDIS_LBN)) | |
267 | supported |= PHY_MODE_TX_DISABLED; | |
268 | if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_LOWPOWER_LBN)) | |
269 | supported |= PHY_MODE_LOW_POWER; | |
270 | if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_POWEROFF_LBN)) | |
271 | supported |= PHY_MODE_OFF; | |
272 | ||
273 | mode = efx->phy_mode & supported; | |
274 | ||
275 | flags = 0; | |
276 | if (mode & PHY_MODE_TX_DISABLED) | |
277 | flags |= (1 << MC_CMD_SET_LINK_TXDIS_LBN); | |
278 | if (mode & PHY_MODE_LOW_POWER) | |
279 | flags |= (1 << MC_CMD_SET_LINK_LOWPOWER_LBN); | |
280 | if (mode & PHY_MODE_OFF) | |
281 | flags |= (1 << MC_CMD_SET_LINK_POWEROFF_LBN); | |
282 | ||
283 | return flags; | |
284 | } | |
285 | ||
286 | static u32 mcdi_to_ethtool_media(u32 media) | |
287 | { | |
288 | switch (media) { | |
289 | case MC_CMD_MEDIA_XAUI: | |
290 | case MC_CMD_MEDIA_CX4: | |
291 | case MC_CMD_MEDIA_KX4: | |
292 | return PORT_OTHER; | |
293 | ||
294 | case MC_CMD_MEDIA_XFP: | |
295 | case MC_CMD_MEDIA_SFP_PLUS: | |
296 | return PORT_FIBRE; | |
297 | ||
298 | case MC_CMD_MEDIA_BASE_T: | |
299 | return PORT_TP; | |
300 | ||
301 | default: | |
302 | return PORT_OTHER; | |
303 | } | |
304 | } | |
305 | ||
306 | static int efx_mcdi_phy_probe(struct efx_nic *efx) | |
307 | { | |
ff3b00a0 SH |
308 | struct efx_mcdi_phy_cfg *phy_data; |
309 | u8 outbuf[MC_CMD_GET_LINK_OUT_LEN]; | |
310 | u32 caps; | |
afd4aea0 BH |
311 | int rc; |
312 | ||
ff3b00a0 SH |
313 | /* Initialise and populate phy_data */ |
314 | phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL); | |
315 | if (phy_data == NULL) | |
316 | return -ENOMEM; | |
317 | ||
318 | rc = efx_mcdi_get_phy_cfg(efx, phy_data); | |
afd4aea0 BH |
319 | if (rc != 0) |
320 | goto fail; | |
321 | ||
ff3b00a0 SH |
322 | /* Read initial link advertisement */ |
323 | BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); | |
324 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, | |
325 | outbuf, sizeof(outbuf), NULL); | |
326 | if (rc) | |
327 | goto fail; | |
328 | ||
329 | /* Fill out nic state */ | |
330 | efx->phy_data = phy_data; | |
331 | efx->phy_type = phy_data->type; | |
afd4aea0 | 332 | |
ff3b00a0 SH |
333 | efx->mdio_bus = phy_data->channel; |
334 | efx->mdio.prtad = phy_data->port; | |
335 | efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22); | |
afd4aea0 | 336 | efx->mdio.mode_support = 0; |
ff3b00a0 | 337 | if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22)) |
afd4aea0 | 338 | efx->mdio.mode_support |= MDIO_SUPPORTS_C22; |
ff3b00a0 | 339 | if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22)) |
afd4aea0 BH |
340 | efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; |
341 | ||
ff3b00a0 SH |
342 | caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP); |
343 | if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN)) | |
344 | efx->link_advertising = | |
345 | mcdi_to_ethtool_cap(phy_data->media, caps); | |
346 | else | |
347 | phy_data->forced_cap = caps; | |
348 | ||
afd4aea0 BH |
349 | /* Assert that we can map efx -> mcdi loopback modes */ |
350 | BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE); | |
351 | BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA); | |
352 | BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC); | |
353 | BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII); | |
354 | BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS); | |
355 | BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI); | |
356 | BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII); | |
357 | BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII); | |
358 | BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR); | |
359 | BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI); | |
360 | BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR); | |
361 | BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR); | |
362 | BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR); | |
363 | BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR); | |
364 | BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY); | |
365 | BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS); | |
366 | BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS); | |
367 | BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD); | |
368 | BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT); | |
369 | BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS); | |
370 | BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS); | |
371 | BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR); | |
372 | BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR); | |
373 | BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS); | |
374 | BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS); | |
375 | BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR); | |
376 | BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS); | |
377 | ||
378 | rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes); | |
379 | if (rc != 0) | |
380 | goto fail; | |
381 | /* The MC indicates that LOOPBACK_NONE is a valid loopback mode, | |
382 | * but by convention we don't */ | |
383 | efx->loopback_modes &= ~(1 << LOOPBACK_NONE); | |
384 | ||
7a6b8f6f SH |
385 | /* Set the initial link mode */ |
386 | efx_mcdi_phy_decode_link( | |
387 | efx, &efx->link_state, | |
388 | MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), | |
389 | MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), | |
390 | MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); | |
391 | ||
392 | /* Default to Autonegotiated flow control if the PHY supports it */ | |
393 | efx->wanted_fc = EFX_FC_RX | EFX_FC_TX; | |
394 | if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) | |
395 | efx->wanted_fc |= EFX_FC_AUTO; | |
396 | ||
afd4aea0 BH |
397 | return 0; |
398 | ||
399 | fail: | |
400 | kfree(phy_data); | |
401 | return rc; | |
402 | } | |
403 | ||
404 | int efx_mcdi_phy_reconfigure(struct efx_nic *efx) | |
405 | { | |
406 | struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data; | |
407 | u32 caps = (efx->link_advertising ? | |
408 | ethtool_to_mcdi_cap(efx->link_advertising) : | |
409 | phy_cfg->forced_cap); | |
410 | ||
411 | return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), | |
412 | efx->loopback_mode, 0); | |
413 | } | |
414 | ||
415 | void efx_mcdi_phy_decode_link(struct efx_nic *efx, | |
416 | struct efx_link_state *link_state, | |
417 | u32 speed, u32 flags, u32 fcntl) | |
418 | { | |
419 | switch (fcntl) { | |
420 | case MC_CMD_FCNTL_AUTO: | |
421 | WARN_ON(1); /* This is not a link mode */ | |
422 | link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX; | |
423 | break; | |
424 | case MC_CMD_FCNTL_BIDIR: | |
425 | link_state->fc = EFX_FC_TX | EFX_FC_RX; | |
426 | break; | |
427 | case MC_CMD_FCNTL_RESPOND: | |
428 | link_state->fc = EFX_FC_RX; | |
429 | break; | |
430 | default: | |
431 | WARN_ON(1); | |
432 | case MC_CMD_FCNTL_OFF: | |
433 | link_state->fc = 0; | |
434 | break; | |
435 | } | |
436 | ||
437 | link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_LINK_UP_LBN)); | |
438 | link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_FULL_DUPLEX_LBN)); | |
439 | link_state->speed = speed; | |
440 | } | |
441 | ||
442 | /* Verify that the forced flow control settings (!EFX_FC_AUTO) are | |
443 | * supported by the link partner. Warn the user if this isn't the case | |
444 | */ | |
445 | void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa) | |
446 | { | |
447 | struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data; | |
448 | u32 rmtadv; | |
449 | ||
450 | /* The link partner capabilities are only relevent if the | |
451 | * link supports flow control autonegotiation */ | |
7a6b8f6f | 452 | if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN)) |
afd4aea0 BH |
453 | return; |
454 | ||
455 | /* If flow control autoneg is supported and enabled, then fine */ | |
456 | if (efx->wanted_fc & EFX_FC_AUTO) | |
457 | return; | |
458 | ||
459 | rmtadv = 0; | |
460 | if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN)) | |
461 | rmtadv |= ADVERTISED_Pause; | |
462 | if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN)) | |
463 | rmtadv |= ADVERTISED_Asym_Pause; | |
464 | ||
465 | if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause) | |
466 | EFX_ERR(efx, "warning: link partner doesn't support " | |
467 | "pause frames"); | |
468 | } | |
469 | ||
470 | static bool efx_mcdi_phy_poll(struct efx_nic *efx) | |
471 | { | |
472 | struct efx_link_state old_state = efx->link_state; | |
473 | u8 outbuf[MC_CMD_GET_LINK_OUT_LEN]; | |
474 | int rc; | |
475 | ||
476 | WARN_ON(!mutex_is_locked(&efx->mac_lock)); | |
477 | ||
478 | BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); | |
479 | ||
480 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, | |
481 | outbuf, sizeof(outbuf), NULL); | |
482 | if (rc) { | |
483 | EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc); | |
484 | efx->link_state.up = false; | |
485 | } else { | |
486 | efx_mcdi_phy_decode_link( | |
487 | efx, &efx->link_state, | |
488 | MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED), | |
489 | MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS), | |
490 | MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL)); | |
491 | } | |
492 | ||
493 | return !efx_link_state_equal(&efx->link_state, &old_state); | |
494 | } | |
495 | ||
ff3b00a0 | 496 | static void efx_mcdi_phy_remove(struct efx_nic *efx) |
afd4aea0 BH |
497 | { |
498 | struct efx_mcdi_phy_data *phy_data = efx->phy_data; | |
499 | ||
500 | efx->phy_data = NULL; | |
501 | kfree(phy_data); | |
502 | } | |
503 | ||
504 | static void efx_mcdi_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd) | |
505 | { | |
506 | struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data; | |
507 | u8 outbuf[MC_CMD_GET_LINK_OUT_LEN]; | |
508 | int rc; | |
509 | ||
510 | ecmd->supported = | |
511 | mcdi_to_ethtool_cap(phy_cfg->media, phy_cfg->supported_cap); | |
512 | ecmd->advertising = efx->link_advertising; | |
513 | ecmd->speed = efx->link_state.speed; | |
514 | ecmd->duplex = efx->link_state.fd; | |
515 | ecmd->port = mcdi_to_ethtool_media(phy_cfg->media); | |
516 | ecmd->phy_address = phy_cfg->port; | |
517 | ecmd->transceiver = XCVR_INTERNAL; | |
518 | ecmd->autoneg = !!(efx->link_advertising & ADVERTISED_Autoneg); | |
519 | ecmd->mdio_support = (efx->mdio.mode_support & | |
520 | (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22)); | |
521 | ||
522 | BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0); | |
523 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0, | |
524 | outbuf, sizeof(outbuf), NULL); | |
525 | if (rc) { | |
526 | EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc); | |
527 | return; | |
528 | } | |
529 | ecmd->lp_advertising = | |
530 | mcdi_to_ethtool_cap(phy_cfg->media, | |
531 | MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP)); | |
532 | } | |
533 | ||
534 | static int efx_mcdi_phy_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd) | |
535 | { | |
536 | struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data; | |
537 | u32 caps; | |
538 | int rc; | |
539 | ||
540 | if (ecmd->autoneg) { | |
541 | caps = (ethtool_to_mcdi_cap(ecmd->advertising) | | |
542 | 1 << MC_CMD_PHY_CAP_AN_LBN); | |
543 | } else if (ecmd->duplex) { | |
544 | switch (ecmd->speed) { | |
545 | case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break; | |
546 | case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break; | |
547 | case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break; | |
548 | case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break; | |
549 | default: return -EINVAL; | |
550 | } | |
551 | } else { | |
552 | switch (ecmd->speed) { | |
553 | case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break; | |
554 | case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break; | |
555 | case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break; | |
556 | default: return -EINVAL; | |
557 | } | |
558 | } | |
559 | ||
560 | rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx), | |
561 | efx->loopback_mode, 0); | |
562 | if (rc) | |
563 | return rc; | |
564 | ||
565 | if (ecmd->autoneg) { | |
566 | efx_link_set_advertising( | |
567 | efx, ecmd->advertising | ADVERTISED_Autoneg); | |
568 | phy_cfg->forced_cap = 0; | |
569 | } else { | |
570 | efx_link_set_advertising(efx, 0); | |
571 | phy_cfg->forced_cap = caps; | |
572 | } | |
573 | return 0; | |
574 | } | |
575 | ||
4f16c073 BH |
576 | static int efx_mcdi_phy_test_alive(struct efx_nic *efx) |
577 | { | |
578 | u8 outbuf[MC_CMD_GET_PHY_STATE_OUT_LEN]; | |
579 | size_t outlen; | |
580 | int rc; | |
581 | ||
582 | BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0); | |
583 | ||
584 | rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0, | |
585 | outbuf, sizeof(outbuf), &outlen); | |
586 | if (rc) | |
587 | return rc; | |
588 | ||
589 | if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN) | |
590 | return -EMSGSIZE; | |
591 | if (MCDI_DWORD(outbuf, GET_PHY_STATE_STATE) != MC_CMD_PHY_STATE_OK) | |
592 | return -EINVAL; | |
593 | ||
594 | return 0; | |
595 | } | |
596 | ||
afd4aea0 BH |
597 | struct efx_phy_operations efx_mcdi_phy_ops = { |
598 | .probe = efx_mcdi_phy_probe, | |
ff3b00a0 | 599 | .init = efx_port_dummy_op_int, |
afd4aea0 BH |
600 | .reconfigure = efx_mcdi_phy_reconfigure, |
601 | .poll = efx_mcdi_phy_poll, | |
ff3b00a0 SH |
602 | .fini = efx_port_dummy_op_void, |
603 | .remove = efx_mcdi_phy_remove, | |
afd4aea0 BH |
604 | .get_settings = efx_mcdi_phy_get_settings, |
605 | .set_settings = efx_mcdi_phy_set_settings, | |
4f16c073 | 606 | .test_alive = efx_mcdi_phy_test_alive, |
afd4aea0 BH |
607 | .run_tests = NULL, |
608 | .test_name = NULL, | |
609 | }; |