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authorBen Hutchings <bhutchings@solarflare.com>2009-11-29 10:15:25 -0500
committerDavid S. Miller <davem@davemloft.net>2009-11-29 20:23:56 -0500
commitafd4aea03f597f29421dc5767e7d1f754730ec23 (patch)
tree4db34733c970c379aeb9e7f8b453333ce2ca155b /drivers/net/sfc/mcdi_phy.c
parentf0d37f4228e440597d5d56c31292e2e1639c7539 (diff)
sfc: Add support for SFC9000 family (1)
This adds support for the SFC9000 family of 10G Ethernet controllers and LAN-on-motherboard chips, starting with the SFL9021 'Siena' and SFC9020 'Bethpage'. The SFC9000 family is based on the SFC4000 'Falcon' architecture, but with some significant changes: - Two ports are associated with two independent PCI functions (except SFC9010) - Integrated 10GBASE-T PHY(s) (SFL9021/9022) - MAC, PHY and board peripherals are managed by firmware - Driver does not require board-specific code - Firmware supports wake-on-LAN and lights-out management through NC-SI - IPv6 checksum offload and RSS - Filtering by MAC address and VLAN (not included in this code) - PCI SR-IOV (not included in this code) Credit for this code is largely due to my colleagues at Solarflare: Guido Barzini Steve Hodgson Kieran Mansley Matthew Slattery Neil Turton Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/sfc/mcdi_phy.c')
-rw-r--r--drivers/net/sfc/mcdi_phy.c597
1 files changed, 597 insertions, 0 deletions
diff --git a/drivers/net/sfc/mcdi_phy.c b/drivers/net/sfc/mcdi_phy.c
new file mode 100644
index 000000000000..0e1bcc5a0d52
--- /dev/null
+++ b/drivers/net/sfc/mcdi_phy.c
@@ -0,0 +1,597 @@
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
14#include "efx.h"
15#include "phy.h"
16#include "mcdi.h"
17#include "mcdi_pcol.h"
18#include "mdio_10g.h"
19
20struct efx_mcdi_phy_cfg {
21 u32 flags;
22 u32 type;
23 u32 supported_cap;
24 u32 channel;
25 u32 port;
26 u32 stats_mask;
27 u8 name[20];
28 u32 media;
29 u32 mmd_mask;
30 u8 revision[20];
31 u32 forced_cap;
32};
33
34static int
35efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_cfg *cfg)
36{
37 u8 outbuf[MC_CMD_GET_PHY_CFG_OUT_LEN];
38 size_t outlen;
39 int rc;
40
41 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_IN_LEN != 0);
42 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_OUT_NAME_LEN != sizeof(cfg->name));
43
44 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_CFG, NULL, 0,
45 outbuf, sizeof(outbuf), &outlen);
46 if (rc)
47 goto fail;
48
49 if (outlen < MC_CMD_GET_PHY_CFG_OUT_LEN) {
50 rc = -EMSGSIZE;
51 goto fail;
52 }
53
54 cfg->flags = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_FLAGS);
55 cfg->type = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_TYPE);
56 cfg->supported_cap =
57 MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_SUPPORTED_CAP);
58 cfg->channel = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_CHANNEL);
59 cfg->port = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_PRT);
60 cfg->stats_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_STATS_MASK);
61 memcpy(cfg->name, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_NAME),
62 sizeof(cfg->name));
63 cfg->media = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MEDIA_TYPE);
64 cfg->mmd_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MMD_MASK);
65 memcpy(cfg->revision, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_REVISION),
66 sizeof(cfg->revision));
67
68 return 0;
69
70fail:
71 EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc);
72 return rc;
73}
74
75static int efx_mcdi_set_link(struct efx_nic *efx, u32 capabilities,
76 u32 flags, u32 loopback_mode,
77 u32 loopback_speed)
78{
79 u8 inbuf[MC_CMD_SET_LINK_IN_LEN];
80 int rc;
81
82 BUILD_BUG_ON(MC_CMD_SET_LINK_OUT_LEN != 0);
83
84 MCDI_SET_DWORD(inbuf, SET_LINK_IN_CAP, capabilities);
85 MCDI_SET_DWORD(inbuf, SET_LINK_IN_FLAGS, flags);
86 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_MODE, loopback_mode);
87 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_SPEED, loopback_speed);
88
89 rc = efx_mcdi_rpc(efx, MC_CMD_SET_LINK, inbuf, sizeof(inbuf),
90 NULL, 0, NULL);
91 if (rc)
92 goto fail;
93
94 return 0;
95
96fail:
97 EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc);
98 return rc;
99}
100
101static int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes)
102{
103 u8 outbuf[MC_CMD_GET_LOOPBACK_MODES_OUT_LEN];
104 size_t outlen;
105 int rc;
106
107 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LOOPBACK_MODES, NULL, 0,
108 outbuf, sizeof(outbuf), &outlen);
109 if (rc)
110 goto fail;
111
112 if (outlen < MC_CMD_GET_LOOPBACK_MODES_OUT_LEN) {
113 rc = -EMSGSIZE;
114 goto fail;
115 }
116
117 *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_SUGGESTED);
118
119 return 0;
120
121fail:
122 EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc);
123 return rc;
124}
125
126int efx_mcdi_mdio_read(struct efx_nic *efx, unsigned int bus,
127 unsigned int prtad, unsigned int devad, u16 addr,
128 u16 *value_out, u32 *status_out)
129{
130 u8 inbuf[MC_CMD_MDIO_READ_IN_LEN];
131 u8 outbuf[MC_CMD_MDIO_READ_OUT_LEN];
132 size_t outlen;
133 int rc;
134
135 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, bus);
136 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_PRTAD, prtad);
137 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_DEVAD, devad);
138 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_ADDR, addr);
139
140 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_READ, inbuf, sizeof(inbuf),
141 outbuf, sizeof(outbuf), &outlen);
142 if (rc)
143 goto fail;
144
145 *value_out = (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE);
146 *status_out = MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS);
147 return 0;
148
149fail:
150 EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc);
151 return rc;
152}
153
154int efx_mcdi_mdio_write(struct efx_nic *efx, unsigned int bus,
155 unsigned int prtad, unsigned int devad, u16 addr,
156 u16 value, u32 *status_out)
157{
158 u8 inbuf[MC_CMD_MDIO_WRITE_IN_LEN];
159 u8 outbuf[MC_CMD_MDIO_WRITE_OUT_LEN];
160 size_t outlen;
161 int rc;
162
163 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, bus);
164 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_PRTAD, prtad);
165 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_DEVAD, devad);
166 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_ADDR, addr);
167 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_VALUE, value);
168
169 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_WRITE, inbuf, sizeof(inbuf),
170 outbuf, sizeof(outbuf), &outlen);
171 if (rc)
172 goto fail;
173
174 *status_out = MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS);
175 return 0;
176
177fail:
178 EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc);
179 return rc;
180}
181
182static u32 mcdi_to_ethtool_cap(u32 media, u32 cap)
183{
184 u32 result = 0;
185
186 switch (media) {
187 case MC_CMD_MEDIA_KX4:
188 result |= SUPPORTED_Backplane;
189 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
190 result |= SUPPORTED_1000baseKX_Full;
191 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
192 result |= SUPPORTED_10000baseKX4_Full;
193 break;
194
195 case MC_CMD_MEDIA_XFP:
196 case MC_CMD_MEDIA_SFP_PLUS:
197 result |= SUPPORTED_FIBRE;
198 break;
199
200 case MC_CMD_MEDIA_BASE_T:
201 result |= SUPPORTED_TP;
202 if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN))
203 result |= SUPPORTED_10baseT_Half;
204 if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN))
205 result |= SUPPORTED_10baseT_Full;
206 if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN))
207 result |= SUPPORTED_100baseT_Half;
208 if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN))
209 result |= SUPPORTED_100baseT_Full;
210 if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN))
211 result |= SUPPORTED_1000baseT_Half;
212 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
213 result |= SUPPORTED_1000baseT_Full;
214 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
215 result |= SUPPORTED_10000baseT_Full;
216 break;
217 }
218
219 if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
220 result |= SUPPORTED_Pause;
221 if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
222 result |= SUPPORTED_Asym_Pause;
223 if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
224 result |= SUPPORTED_Autoneg;
225
226 return result;
227}
228
229static u32 ethtool_to_mcdi_cap(u32 cap)
230{
231 u32 result = 0;
232
233 if (cap & SUPPORTED_10baseT_Half)
234 result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN);
235 if (cap & SUPPORTED_10baseT_Full)
236 result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN);
237 if (cap & SUPPORTED_100baseT_Half)
238 result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN);
239 if (cap & SUPPORTED_100baseT_Full)
240 result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN);
241 if (cap & SUPPORTED_1000baseT_Half)
242 result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN);
243 if (cap & (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseKX_Full))
244 result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN);
245 if (cap & (SUPPORTED_10000baseT_Full | SUPPORTED_10000baseKX4_Full))
246 result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN);
247 if (cap & SUPPORTED_Pause)
248 result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN);
249 if (cap & SUPPORTED_Asym_Pause)
250 result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN);
251 if (cap & SUPPORTED_Autoneg)
252 result |= (1 << MC_CMD_PHY_CAP_AN_LBN);
253
254 return result;
255}
256
257static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx)
258{
259 struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data;
260 enum efx_phy_mode mode, supported;
261 u32 flags;
262
263 /* TODO: Advertise the capabilities supported by this PHY */
264 supported = 0;
265 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_TXDIS_LBN))
266 supported |= PHY_MODE_TX_DISABLED;
267 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_LOWPOWER_LBN))
268 supported |= PHY_MODE_LOW_POWER;
269 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_POWEROFF_LBN))
270 supported |= PHY_MODE_OFF;
271
272 mode = efx->phy_mode & supported;
273
274 flags = 0;
275 if (mode & PHY_MODE_TX_DISABLED)
276 flags |= (1 << MC_CMD_SET_LINK_TXDIS_LBN);
277 if (mode & PHY_MODE_LOW_POWER)
278 flags |= (1 << MC_CMD_SET_LINK_LOWPOWER_LBN);
279 if (mode & PHY_MODE_OFF)
280 flags |= (1 << MC_CMD_SET_LINK_POWEROFF_LBN);
281
282 return flags;
283}
284
285static u32 mcdi_to_ethtool_media(u32 media)
286{
287 switch (media) {
288 case MC_CMD_MEDIA_XAUI:
289 case MC_CMD_MEDIA_CX4:
290 case MC_CMD_MEDIA_KX4:
291 return PORT_OTHER;
292
293 case MC_CMD_MEDIA_XFP:
294 case MC_CMD_MEDIA_SFP_PLUS:
295 return PORT_FIBRE;
296
297 case MC_CMD_MEDIA_BASE_T:
298 return PORT_TP;
299
300 default:
301 return PORT_OTHER;
302 }
303}
304
305static int efx_mcdi_phy_probe(struct efx_nic *efx)
306{
307 struct efx_mcdi_phy_cfg *phy_cfg;
308 int rc;
309
310 /* TODO: Move phy_data initialisation to
311 * phy_op->probe/remove, rather than init/fini */
312 phy_cfg = kzalloc(sizeof(*phy_cfg), GFP_KERNEL);
313 if (phy_cfg == NULL) {
314 rc = -ENOMEM;
315 goto fail_alloc;
316 }
317 rc = efx_mcdi_get_phy_cfg(efx, phy_cfg);
318 if (rc != 0)
319 goto fail;
320
321 efx->phy_type = phy_cfg->type;
322
323 efx->mdio_bus = phy_cfg->channel;
324 efx->mdio.prtad = phy_cfg->port;
325 efx->mdio.mmds = phy_cfg->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22);
326 efx->mdio.mode_support = 0;
327 if (phy_cfg->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22))
328 efx->mdio.mode_support |= MDIO_SUPPORTS_C22;
329 if (phy_cfg->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22))
330 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
331
332 /* Assert that we can map efx -> mcdi loopback modes */
333 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE);
334 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA);
335 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC);
336 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII);
337 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS);
338 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI);
339 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII);
340 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII);
341 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR);
342 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI);
343 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR);
344 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR);
345 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR);
346 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR);
347 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY);
348 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS);
349 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS);
350 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD);
351 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT);
352 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS);
353 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS);
354 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR);
355 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR);
356 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS);
357 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS);
358 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR);
359 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS);
360
361 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes);
362 if (rc != 0)
363 goto fail;
364 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode,
365 * but by convention we don't */
366 efx->loopback_modes &= ~(1 << LOOPBACK_NONE);
367
368 kfree(phy_cfg);
369
370 return 0;
371
372fail:
373 kfree(phy_cfg);
374fail_alloc:
375 return rc;
376}
377
378static int efx_mcdi_phy_init(struct efx_nic *efx)
379{
380 struct efx_mcdi_phy_cfg *phy_data;
381 u8 outbuf[MC_CMD_GET_LINK_OUT_LEN];
382 u32 caps;
383 int rc;
384
385 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);
386 if (phy_data == NULL)
387 return -ENOMEM;
388
389 rc = efx_mcdi_get_phy_cfg(efx, phy_data);
390 if (rc != 0)
391 goto fail;
392
393 efx->phy_data = phy_data;
394
395 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
396 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
397 outbuf, sizeof(outbuf), NULL);
398 if (rc)
399 goto fail;
400
401 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP);
402 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN))
403 efx->link_advertising =
404 mcdi_to_ethtool_cap(phy_data->media, caps);
405 else
406 phy_data->forced_cap = caps;
407
408 return 0;
409
410fail:
411 kfree(phy_data);
412 return rc;
413}
414
415int efx_mcdi_phy_reconfigure(struct efx_nic *efx)
416{
417 struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data;
418 u32 caps = (efx->link_advertising ?
419 ethtool_to_mcdi_cap(efx->link_advertising) :
420 phy_cfg->forced_cap);
421
422 return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
423 efx->loopback_mode, 0);
424}
425
426void efx_mcdi_phy_decode_link(struct efx_nic *efx,
427 struct efx_link_state *link_state,
428 u32 speed, u32 flags, u32 fcntl)
429{
430 switch (fcntl) {
431 case MC_CMD_FCNTL_AUTO:
432 WARN_ON(1); /* This is not a link mode */
433 link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX;
434 break;
435 case MC_CMD_FCNTL_BIDIR:
436 link_state->fc = EFX_FC_TX | EFX_FC_RX;
437 break;
438 case MC_CMD_FCNTL_RESPOND:
439 link_state->fc = EFX_FC_RX;
440 break;
441 default:
442 WARN_ON(1);
443 case MC_CMD_FCNTL_OFF:
444 link_state->fc = 0;
445 break;
446 }
447
448 link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_LINK_UP_LBN));
449 link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_FULL_DUPLEX_LBN));
450 link_state->speed = speed;
451}
452
453/* Verify that the forced flow control settings (!EFX_FC_AUTO) are
454 * supported by the link partner. Warn the user if this isn't the case
455 */
456void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa)
457{
458 struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data;
459 u32 rmtadv;
460
461 /* The link partner capabilities are only relevent if the
462 * link supports flow control autonegotiation */
463 if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
464 return;
465
466 /* If flow control autoneg is supported and enabled, then fine */
467 if (efx->wanted_fc & EFX_FC_AUTO)
468 return;
469
470 rmtadv = 0;
471 if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
472 rmtadv |= ADVERTISED_Pause;
473 if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
474 rmtadv |= ADVERTISED_Asym_Pause;
475
476 if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause)
477 EFX_ERR(efx, "warning: link partner doesn't support "
478 "pause frames");
479}
480
481static bool efx_mcdi_phy_poll(struct efx_nic *efx)
482{
483 struct efx_link_state old_state = efx->link_state;
484 u8 outbuf[MC_CMD_GET_LINK_OUT_LEN];
485 int rc;
486
487 WARN_ON(!mutex_is_locked(&efx->mac_lock));
488
489 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
490
491 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
492 outbuf, sizeof(outbuf), NULL);
493 if (rc) {
494 EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc);
495 efx->link_state.up = false;
496 } else {
497 efx_mcdi_phy_decode_link(
498 efx, &efx->link_state,
499 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
500 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
501 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
502 }
503
504 return !efx_link_state_equal(&efx->link_state, &old_state);
505}
506
507static void efx_mcdi_phy_fini(struct efx_nic *efx)
508{
509 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
510
511 efx->phy_data = NULL;
512 kfree(phy_data);
513}
514
515static void efx_mcdi_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
516{
517 struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data;
518 u8 outbuf[MC_CMD_GET_LINK_OUT_LEN];
519 int rc;
520
521 ecmd->supported =
522 mcdi_to_ethtool_cap(phy_cfg->media, phy_cfg->supported_cap);
523 ecmd->advertising = efx->link_advertising;
524 ecmd->speed = efx->link_state.speed;
525 ecmd->duplex = efx->link_state.fd;
526 ecmd->port = mcdi_to_ethtool_media(phy_cfg->media);
527 ecmd->phy_address = phy_cfg->port;
528 ecmd->transceiver = XCVR_INTERNAL;
529 ecmd->autoneg = !!(efx->link_advertising & ADVERTISED_Autoneg);
530 ecmd->mdio_support = (efx->mdio.mode_support &
531 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22));
532
533 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
534 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
535 outbuf, sizeof(outbuf), NULL);
536 if (rc) {
537 EFX_ERR(efx, "%s: failed rc=%d\n", __func__, rc);
538 return;
539 }
540 ecmd->lp_advertising =
541 mcdi_to_ethtool_cap(phy_cfg->media,
542 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP));
543}
544
545static int efx_mcdi_phy_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
546{
547 struct efx_mcdi_phy_cfg *phy_cfg = efx->phy_data;
548 u32 caps;
549 int rc;
550
551 if (ecmd->autoneg) {
552 caps = (ethtool_to_mcdi_cap(ecmd->advertising) |
553 1 << MC_CMD_PHY_CAP_AN_LBN);
554 } else if (ecmd->duplex) {
555 switch (ecmd->speed) {
556 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break;
557 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break;
558 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break;
559 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break;
560 default: return -EINVAL;
561 }
562 } else {
563 switch (ecmd->speed) {
564 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break;
565 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break;
566 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break;
567 default: return -EINVAL;
568 }
569 }
570
571 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
572 efx->loopback_mode, 0);
573 if (rc)
574 return rc;
575
576 if (ecmd->autoneg) {
577 efx_link_set_advertising(
578 efx, ecmd->advertising | ADVERTISED_Autoneg);
579 phy_cfg->forced_cap = 0;
580 } else {
581 efx_link_set_advertising(efx, 0);
582 phy_cfg->forced_cap = caps;
583 }
584 return 0;
585}
586
587struct efx_phy_operations efx_mcdi_phy_ops = {
588 .probe = efx_mcdi_phy_probe,
589 .init = efx_mcdi_phy_init,
590 .reconfigure = efx_mcdi_phy_reconfigure,
591 .poll = efx_mcdi_phy_poll,
592 .fini = efx_mcdi_phy_fini,
593 .get_settings = efx_mcdi_phy_get_settings,
594 .set_settings = efx_mcdi_phy_set_settings,
595 .run_tests = NULL,
596 .test_name = NULL,
597};
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-15 00:14:55 -0500