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authorBen Hutchings <bhutchings@solarflare.com>2012-09-17 21:33:54 -0400
committerBen Hutchings <bhutchings@solarflare.com>2013-08-21 14:43:03 -0400
commit43f775b2fa759a9c126a911f999f35aeb0fbbb84 (patch)
tree619d7933f388e396ab51415fcfb35eefcae2c0b2 /drivers/net/ethernet/sfc/mcdi_port.c
parent319ec6444d723f9f01b96728c163d7eaf75e24d7 (diff)
sfc: Collect all MCDI port functions into mcdi_port.c
Collect together MCDI port functions from mcdi.c, mcdi_mac.c, mcdi_phy.c and siena.c. Rename the 'siena' functions accordingly. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Diffstat (limited to 'drivers/net/ethernet/sfc/mcdi_port.c')
-rw-r--r--drivers/net/ethernet/sfc/mcdi_port.c1010
1 files changed, 1010 insertions, 0 deletions
diff --git a/drivers/net/ethernet/sfc/mcdi_port.c b/drivers/net/ethernet/sfc/mcdi_port.c
new file mode 100644
index 000000000000..8f31e3d3f304
--- /dev/null
+++ b/drivers/net/ethernet/sfc/mcdi_port.c
@@ -0,0 +1,1010 @@
1/****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2009-2010 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 <linux/slab.h>
15#include "efx.h"
16#include "phy.h"
17#include "mcdi.h"
18#include "mcdi_pcol.h"
19#include "nic.h"
20#include "selftest.h"
21
22struct efx_mcdi_phy_data {
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
36static int
37efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_data *cfg)
38{
39 MCDI_DECLARE_BUF(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) {
52 rc = -EIO;
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
72fail:
73 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
74 return rc;
75}
76
77static int efx_mcdi_set_link(struct efx_nic *efx, u32 capabilities,
78 u32 flags, u32 loopback_mode,
79 u32 loopback_speed)
80{
81 MCDI_DECLARE_BUF(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
98fail:
99 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
100 return rc;
101}
102
103static int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes)
104{
105 MCDI_DECLARE_BUF(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) {
115 rc = -EIO;
116 goto fail;
117 }
118
119 *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_OUT_SUGGESTED);
120
121 return 0;
122
123fail:
124 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
125 return rc;
126}
127
128static int efx_mcdi_mdio_read(struct net_device *net_dev,
129 int prtad, int devad, u16 addr)
130{
131 struct efx_nic *efx = netdev_priv(net_dev);
132 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_READ_IN_LEN);
133 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_READ_OUT_LEN);
134 size_t outlen;
135 int rc;
136
137 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, efx->mdio_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 if (MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS) !=
148 MC_CMD_MDIO_STATUS_GOOD)
149 return -EIO;
150
151 return (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE);
152
153fail:
154 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
155 return rc;
156}
157
158static int efx_mcdi_mdio_write(struct net_device *net_dev,
159 int prtad, int devad, u16 addr, u16 value)
160{
161 struct efx_nic *efx = netdev_priv(net_dev);
162 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_WRITE_IN_LEN);
163 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_WRITE_OUT_LEN);
164 size_t outlen;
165 int rc;
166
167 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, efx->mdio_bus);
168 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_PRTAD, prtad);
169 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_DEVAD, devad);
170 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_ADDR, addr);
171 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_VALUE, value);
172
173 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_WRITE, inbuf, sizeof(inbuf),
174 outbuf, sizeof(outbuf), &outlen);
175 if (rc)
176 goto fail;
177
178 if (MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS) !=
179 MC_CMD_MDIO_STATUS_GOOD)
180 return -EIO;
181
182 return 0;
183
184fail:
185 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
186 return rc;
187}
188
189static u32 mcdi_to_ethtool_cap(u32 media, u32 cap)
190{
191 u32 result = 0;
192
193 switch (media) {
194 case MC_CMD_MEDIA_KX4:
195 result |= SUPPORTED_Backplane;
196 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
197 result |= SUPPORTED_1000baseKX_Full;
198 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
199 result |= SUPPORTED_10000baseKX4_Full;
200 break;
201
202 case MC_CMD_MEDIA_XFP:
203 case MC_CMD_MEDIA_SFP_PLUS:
204 result |= SUPPORTED_FIBRE;
205 break;
206
207 case MC_CMD_MEDIA_BASE_T:
208 result |= SUPPORTED_TP;
209 if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN))
210 result |= SUPPORTED_10baseT_Half;
211 if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN))
212 result |= SUPPORTED_10baseT_Full;
213 if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN))
214 result |= SUPPORTED_100baseT_Half;
215 if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN))
216 result |= SUPPORTED_100baseT_Full;
217 if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN))
218 result |= SUPPORTED_1000baseT_Half;
219 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
220 result |= SUPPORTED_1000baseT_Full;
221 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
222 result |= SUPPORTED_10000baseT_Full;
223 break;
224 }
225
226 if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
227 result |= SUPPORTED_Pause;
228 if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
229 result |= SUPPORTED_Asym_Pause;
230 if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
231 result |= SUPPORTED_Autoneg;
232
233 return result;
234}
235
236static u32 ethtool_to_mcdi_cap(u32 cap)
237{
238 u32 result = 0;
239
240 if (cap & SUPPORTED_10baseT_Half)
241 result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN);
242 if (cap & SUPPORTED_10baseT_Full)
243 result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN);
244 if (cap & SUPPORTED_100baseT_Half)
245 result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN);
246 if (cap & SUPPORTED_100baseT_Full)
247 result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN);
248 if (cap & SUPPORTED_1000baseT_Half)
249 result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN);
250 if (cap & (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseKX_Full))
251 result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN);
252 if (cap & (SUPPORTED_10000baseT_Full | SUPPORTED_10000baseKX4_Full))
253 result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN);
254 if (cap & SUPPORTED_Pause)
255 result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN);
256 if (cap & SUPPORTED_Asym_Pause)
257 result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN);
258 if (cap & SUPPORTED_Autoneg)
259 result |= (1 << MC_CMD_PHY_CAP_AN_LBN);
260
261 return result;
262}
263
264static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx)
265{
266 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
267 enum efx_phy_mode mode, supported;
268 u32 flags;
269
270 /* TODO: Advertise the capabilities supported by this PHY */
271 supported = 0;
272 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_TXDIS_LBN))
273 supported |= PHY_MODE_TX_DISABLED;
274 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_LOWPOWER_LBN))
275 supported |= PHY_MODE_LOW_POWER;
276 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_POWEROFF_LBN))
277 supported |= PHY_MODE_OFF;
278
279 mode = efx->phy_mode & supported;
280
281 flags = 0;
282 if (mode & PHY_MODE_TX_DISABLED)
283 flags |= (1 << MC_CMD_SET_LINK_IN_TXDIS_LBN);
284 if (mode & PHY_MODE_LOW_POWER)
285 flags |= (1 << MC_CMD_SET_LINK_IN_LOWPOWER_LBN);
286 if (mode & PHY_MODE_OFF)
287 flags |= (1 << MC_CMD_SET_LINK_IN_POWEROFF_LBN);
288
289 return flags;
290}
291
292static u32 mcdi_to_ethtool_media(u32 media)
293{
294 switch (media) {
295 case MC_CMD_MEDIA_XAUI:
296 case MC_CMD_MEDIA_CX4:
297 case MC_CMD_MEDIA_KX4:
298 return PORT_OTHER;
299
300 case MC_CMD_MEDIA_XFP:
301 case MC_CMD_MEDIA_SFP_PLUS:
302 return PORT_FIBRE;
303
304 case MC_CMD_MEDIA_BASE_T:
305 return PORT_TP;
306
307 default:
308 return PORT_OTHER;
309 }
310}
311
312static void efx_mcdi_phy_decode_link(struct efx_nic *efx,
313 struct efx_link_state *link_state,
314 u32 speed, u32 flags, u32 fcntl)
315{
316 switch (fcntl) {
317 case MC_CMD_FCNTL_AUTO:
318 WARN_ON(1); /* This is not a link mode */
319 link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX;
320 break;
321 case MC_CMD_FCNTL_BIDIR:
322 link_state->fc = EFX_FC_TX | EFX_FC_RX;
323 break;
324 case MC_CMD_FCNTL_RESPOND:
325 link_state->fc = EFX_FC_RX;
326 break;
327 default:
328 WARN_ON(1);
329 case MC_CMD_FCNTL_OFF:
330 link_state->fc = 0;
331 break;
332 }
333
334 link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_OUT_LINK_UP_LBN));
335 link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_OUT_FULL_DUPLEX_LBN));
336 link_state->speed = speed;
337}
338
339static int efx_mcdi_phy_probe(struct efx_nic *efx)
340{
341 struct efx_mcdi_phy_data *phy_data;
342 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
343 u32 caps;
344 int rc;
345
346 /* Initialise and populate phy_data */
347 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);
348 if (phy_data == NULL)
349 return -ENOMEM;
350
351 rc = efx_mcdi_get_phy_cfg(efx, phy_data);
352 if (rc != 0)
353 goto fail;
354
355 /* Read initial link advertisement */
356 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
357 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
358 outbuf, sizeof(outbuf), NULL);
359 if (rc)
360 goto fail;
361
362 /* Fill out nic state */
363 efx->phy_data = phy_data;
364 efx->phy_type = phy_data->type;
365
366 efx->mdio_bus = phy_data->channel;
367 efx->mdio.prtad = phy_data->port;
368 efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22);
369 efx->mdio.mode_support = 0;
370 if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22))
371 efx->mdio.mode_support |= MDIO_SUPPORTS_C22;
372 if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22))
373 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
374
375 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP);
376 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN))
377 efx->link_advertising =
378 mcdi_to_ethtool_cap(phy_data->media, caps);
379 else
380 phy_data->forced_cap = caps;
381
382 /* Assert that we can map efx -> mcdi loopback modes */
383 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE);
384 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA);
385 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC);
386 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII);
387 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS);
388 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI);
389 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII);
390 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII);
391 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR);
392 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI);
393 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR);
394 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR);
395 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR);
396 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR);
397 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY);
398 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS);
399 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS);
400 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD);
401 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT);
402 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS);
403 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS);
404 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR);
405 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR);
406 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS);
407 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS);
408 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR);
409 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS);
410
411 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes);
412 if (rc != 0)
413 goto fail;
414 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode,
415 * but by convention we don't */
416 efx->loopback_modes &= ~(1 << LOOPBACK_NONE);
417
418 /* Set the initial link mode */
419 efx_mcdi_phy_decode_link(
420 efx, &efx->link_state,
421 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
422 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
423 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
424
425 /* Default to Autonegotiated flow control if the PHY supports it */
426 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX;
427 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
428 efx->wanted_fc |= EFX_FC_AUTO;
429 efx_link_set_wanted_fc(efx, efx->wanted_fc);
430
431 return 0;
432
433fail:
434 kfree(phy_data);
435 return rc;
436}
437
438int efx_mcdi_port_reconfigure(struct efx_nic *efx)
439{
440 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
441 u32 caps = (efx->link_advertising ?
442 ethtool_to_mcdi_cap(efx->link_advertising) :
443 phy_cfg->forced_cap);
444
445 return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
446 efx->loopback_mode, 0);
447}
448
449/* Verify that the forced flow control settings (!EFX_FC_AUTO) are
450 * supported by the link partner. Warn the user if this isn't the case
451 */
452static void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa)
453{
454 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
455 u32 rmtadv;
456
457 /* The link partner capabilities are only relevant if the
458 * link supports flow control autonegotiation */
459 if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
460 return;
461
462 /* If flow control autoneg is supported and enabled, then fine */
463 if (efx->wanted_fc & EFX_FC_AUTO)
464 return;
465
466 rmtadv = 0;
467 if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
468 rmtadv |= ADVERTISED_Pause;
469 if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
470 rmtadv |= ADVERTISED_Asym_Pause;
471
472 if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause)
473 netif_err(efx, link, efx->net_dev,
474 "warning: link partner doesn't support pause frames");
475}
476
477static bool efx_mcdi_phy_poll(struct efx_nic *efx)
478{
479 struct efx_link_state old_state = efx->link_state;
480 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
481 int rc;
482
483 WARN_ON(!mutex_is_locked(&efx->mac_lock));
484
485 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
486
487 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
488 outbuf, sizeof(outbuf), NULL);
489 if (rc) {
490 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
491 __func__, rc);
492 efx->link_state.up = false;
493 } else {
494 efx_mcdi_phy_decode_link(
495 efx, &efx->link_state,
496 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
497 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
498 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
499 }
500
501 return !efx_link_state_equal(&efx->link_state, &old_state);
502}
503
504static void efx_mcdi_phy_remove(struct efx_nic *efx)
505{
506 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
507
508 efx->phy_data = NULL;
509 kfree(phy_data);
510}
511
512static void efx_mcdi_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
513{
514 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
515 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
516 int rc;
517
518 ecmd->supported =
519 mcdi_to_ethtool_cap(phy_cfg->media, phy_cfg->supported_cap);
520 ecmd->advertising = efx->link_advertising;
521 ethtool_cmd_speed_set(ecmd, efx->link_state.speed);
522 ecmd->duplex = efx->link_state.fd;
523 ecmd->port = mcdi_to_ethtool_media(phy_cfg->media);
524 ecmd->phy_address = phy_cfg->port;
525 ecmd->transceiver = XCVR_INTERNAL;
526 ecmd->autoneg = !!(efx->link_advertising & ADVERTISED_Autoneg);
527 ecmd->mdio_support = (efx->mdio.mode_support &
528 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22));
529
530 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
531 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
532 outbuf, sizeof(outbuf), NULL);
533 if (rc) {
534 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
535 __func__, rc);
536 return;
537 }
538 ecmd->lp_advertising =
539 mcdi_to_ethtool_cap(phy_cfg->media,
540 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP));
541}
542
543static int efx_mcdi_phy_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
544{
545 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
546 u32 caps;
547 int rc;
548
549 if (ecmd->autoneg) {
550 caps = (ethtool_to_mcdi_cap(ecmd->advertising) |
551 1 << MC_CMD_PHY_CAP_AN_LBN);
552 } else if (ecmd->duplex) {
553 switch (ethtool_cmd_speed(ecmd)) {
554 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break;
555 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break;
556 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break;
557 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break;
558 default: return -EINVAL;
559 }
560 } else {
561 switch (ethtool_cmd_speed(ecmd)) {
562 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break;
563 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break;
564 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break;
565 default: return -EINVAL;
566 }
567 }
568
569 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
570 efx->loopback_mode, 0);
571 if (rc)
572 return rc;
573
574 if (ecmd->autoneg) {
575 efx_link_set_advertising(
576 efx, ecmd->advertising | ADVERTISED_Autoneg);
577 phy_cfg->forced_cap = 0;
578 } else {
579 efx_link_set_advertising(efx, 0);
580 phy_cfg->forced_cap = caps;
581 }
582 return 0;
583}
584
585static int efx_mcdi_phy_test_alive(struct efx_nic *efx)
586{
587 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_STATE_OUT_LEN);
588 size_t outlen;
589 int rc;
590
591 BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0);
592
593 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0,
594 outbuf, sizeof(outbuf), &outlen);
595 if (rc)
596 return rc;
597
598 if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN)
599 return -EIO;
600 if (MCDI_DWORD(outbuf, GET_PHY_STATE_OUT_STATE) != MC_CMD_PHY_STATE_OK)
601 return -EINVAL;
602
603 return 0;
604}
605
606static const char *const mcdi_sft9001_cable_diag_names[] = {
607 "cable.pairA.length",
608 "cable.pairB.length",
609 "cable.pairC.length",
610 "cable.pairD.length",
611 "cable.pairA.status",
612 "cable.pairB.status",
613 "cable.pairC.status",
614 "cable.pairD.status",
615};
616
617static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode,
618 int *results)
619{
620 unsigned int retry, i, count = 0;
621 size_t outlen;
622 u32 status;
623 MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN);
624 MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN);
625 u8 *ptr;
626 int rc;
627
628 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0);
629 MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode);
630 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST,
631 inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL);
632 if (rc)
633 goto out;
634
635 /* Wait up to 10s for BIST to finish */
636 for (retry = 0; retry < 100; ++retry) {
637 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0);
638 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0,
639 outbuf, sizeof(outbuf), &outlen);
640 if (rc)
641 goto out;
642
643 status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT);
644 if (status != MC_CMD_POLL_BIST_RUNNING)
645 goto finished;
646
647 msleep(100);
648 }
649
650 rc = -ETIMEDOUT;
651 goto out;
652
653finished:
654 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1;
655
656 /* SFT9001 specific cable diagnostics output */
657 if (efx->phy_type == PHY_TYPE_SFT9001B &&
658 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT ||
659 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) {
660 ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A);
661 if (status == MC_CMD_POLL_BIST_PASSED &&
662 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) {
663 for (i = 0; i < 8; i++) {
664 results[count + i] =
665 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i],
666 EFX_DWORD_0);
667 }
668 }
669 count += 8;
670 }
671 rc = count;
672
673out:
674 return rc;
675}
676
677static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results,
678 unsigned flags)
679{
680 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
681 u32 mode;
682 int rc;
683
684 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
685 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results);
686 if (rc < 0)
687 return rc;
688
689 results += rc;
690 }
691
692 /* If we support both LONG and SHORT, then run each in response to
693 * break or not. Otherwise, run the one we support */
694 mode = 0;
695 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) {
696 if ((flags & ETH_TEST_FL_OFFLINE) &&
697 (phy_cfg->flags &
698 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)))
699 mode = MC_CMD_PHY_BIST_CABLE_LONG;
700 else
701 mode = MC_CMD_PHY_BIST_CABLE_SHORT;
702 } else if (phy_cfg->flags &
703 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))
704 mode = MC_CMD_PHY_BIST_CABLE_LONG;
705
706 if (mode != 0) {
707 rc = efx_mcdi_bist(efx, mode, results);
708 if (rc < 0)
709 return rc;
710 results += rc;
711 }
712
713 return 0;
714}
715
716static const char *efx_mcdi_phy_test_name(struct efx_nic *efx,
717 unsigned int index)
718{
719 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
720
721 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
722 if (index == 0)
723 return "bist";
724 --index;
725 }
726
727 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) |
728 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) {
729 if (index == 0)
730 return "cable";
731 --index;
732
733 if (efx->phy_type == PHY_TYPE_SFT9001B) {
734 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names))
735 return mcdi_sft9001_cable_diag_names[index];
736 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names);
737 }
738 }
739
740 return NULL;
741}
742
743#define SFP_PAGE_SIZE 128
744#define SFP_NUM_PAGES 2
745static int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx,
746 struct ethtool_eeprom *ee, u8 *data)
747{
748 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX);
749 MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN);
750 size_t outlen;
751 int rc;
752 unsigned int payload_len;
753 unsigned int space_remaining = ee->len;
754 unsigned int page;
755 unsigned int page_off;
756 unsigned int to_copy;
757 u8 *user_data = data;
758
759 BUILD_BUG_ON(SFP_PAGE_SIZE * SFP_NUM_PAGES != ETH_MODULE_SFF_8079_LEN);
760
761 page_off = ee->offset % SFP_PAGE_SIZE;
762 page = ee->offset / SFP_PAGE_SIZE;
763
764 while (space_remaining && (page < SFP_NUM_PAGES)) {
765 MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page);
766
767 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_MEDIA_INFO,
768 inbuf, sizeof(inbuf),
769 outbuf, sizeof(outbuf),
770 &outlen);
771 if (rc)
772 return rc;
773
774 if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST +
775 SFP_PAGE_SIZE))
776 return -EIO;
777
778 payload_len = MCDI_DWORD(outbuf,
779 GET_PHY_MEDIA_INFO_OUT_DATALEN);
780 if (payload_len != SFP_PAGE_SIZE)
781 return -EIO;
782
783 /* Copy as much as we can into data */
784 payload_len -= page_off;
785 to_copy = (space_remaining < payload_len) ?
786 space_remaining : payload_len;
787
788 memcpy(user_data,
789 MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + page_off,
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
801static 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
816static const struct efx_phy_operations efx_mcdi_phy_ops = {
817 .probe = efx_mcdi_phy_probe,
818 .init = efx_port_dummy_op_int,
819 .reconfigure = efx_mcdi_port_reconfigure,
820 .poll = efx_mcdi_phy_poll,
821 .fini = efx_port_dummy_op_void,
822 .remove = efx_mcdi_phy_remove,
823 .get_settings = efx_mcdi_phy_get_settings,
824 .set_settings = efx_mcdi_phy_set_settings,
825 .test_alive = efx_mcdi_phy_test_alive,
826 .run_tests = efx_mcdi_phy_run_tests,
827 .test_name = efx_mcdi_phy_test_name,
828 .get_module_eeprom = efx_mcdi_phy_get_module_eeprom,
829 .get_module_info = efx_mcdi_phy_get_module_info,
830};
831
832static unsigned int efx_mcdi_event_link_speed[] = {
833 [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100,
834 [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000,
835 [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000,
836};
837
838void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev)
839{
840 u32 flags, fcntl, speed, lpa;
841
842 speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED);
843 EFX_BUG_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed));
844 speed = efx_mcdi_event_link_speed[speed];
845
846 flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS);
847 fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL);
848 lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP);
849
850 /* efx->link_state is only modified by efx_mcdi_phy_get_link(),
851 * which is only run after flushing the event queues. Therefore, it
852 * is safe to modify the link state outside of the mac_lock here.
853 */
854 efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl);
855
856 efx_mcdi_phy_check_fcntl(efx, lpa);
857
858 efx_link_status_changed(efx);
859}
860
861int efx_mcdi_set_mac(struct efx_nic *efx)
862{
863 u32 reject, fcntl;
864 MCDI_DECLARE_BUF(cmdbytes, MC_CMD_SET_MAC_IN_LEN);
865
866 BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0);
867
868 memcpy(MCDI_PTR(cmdbytes, SET_MAC_IN_ADDR),
869 efx->net_dev->dev_addr, ETH_ALEN);
870
871 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_MTU,
872 EFX_MAX_FRAME_LEN(efx->net_dev->mtu));
873 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_DRAIN, 0);
874
875 /* The MCDI command provides for controlling accept/reject
876 * of broadcast packets too, but the driver doesn't currently
877 * expose this. */
878 reject = (efx->promiscuous) ? 0 :
879 (1 << MC_CMD_SET_MAC_IN_REJECT_UNCST_LBN);
880 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_REJECT, reject);
881
882 switch (efx->wanted_fc) {
883 case EFX_FC_RX | EFX_FC_TX:
884 fcntl = MC_CMD_FCNTL_BIDIR;
885 break;
886 case EFX_FC_RX:
887 fcntl = MC_CMD_FCNTL_RESPOND;
888 break;
889 default:
890 fcntl = MC_CMD_FCNTL_OFF;
891 break;
892 }
893 if (efx->wanted_fc & EFX_FC_AUTO)
894 fcntl = MC_CMD_FCNTL_AUTO;
895 if (efx->fc_disable)
896 fcntl = MC_CMD_FCNTL_OFF;
897
898 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_FCNTL, fcntl);
899
900 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, cmdbytes, sizeof(cmdbytes),
901 NULL, 0, NULL);
902}
903
904bool efx_mcdi_mac_check_fault(struct efx_nic *efx)
905{
906 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
907 size_t outlength;
908 int rc;
909
910 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
911
912 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
913 outbuf, sizeof(outbuf), &outlength);
914 if (rc) {
915 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n",
916 __func__, rc);
917 return true;
918 }
919
920 return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0;
921}
922
923static int efx_mcdi_mac_stats(struct efx_nic *efx, dma_addr_t dma_addr,
924 u32 dma_len, int enable, int clear)
925{
926 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN);
927 int rc;
928 efx_dword_t *cmd_ptr;
929 int period = enable ? 1000 : 0;
930
931 BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_DMA_LEN != 0);
932
933 MCDI_SET_QWORD(inbuf, MAC_STATS_IN_DMA_ADDR, dma_addr);
934 cmd_ptr = (efx_dword_t *)MCDI_PTR(inbuf, MAC_STATS_IN_CMD);
935 EFX_POPULATE_DWORD_7(*cmd_ptr,
936 MC_CMD_MAC_STATS_IN_DMA, !!enable,
937 MC_CMD_MAC_STATS_IN_CLEAR, clear,
938 MC_CMD_MAC_STATS_IN_PERIODIC_CHANGE, 1,
939 MC_CMD_MAC_STATS_IN_PERIODIC_ENABLE, !!enable,
940 MC_CMD_MAC_STATS_IN_PERIODIC_CLEAR, 0,
941 MC_CMD_MAC_STATS_IN_PERIODIC_NOEVENT, 1,
942 MC_CMD_MAC_STATS_IN_PERIOD_MS, period);
943 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len);
944
945 rc = efx_mcdi_rpc(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf),
946 NULL, 0, NULL);
947 if (rc)
948 goto fail;
949
950 return 0;
951
952fail:
953 netif_err(efx, hw, efx->net_dev, "%s: %s failed rc=%d\n",
954 __func__, enable ? "enable" : "disable", rc);
955 return rc;
956}
957
958void efx_mcdi_mac_start_stats(struct efx_nic *efx)
959{
960 __le64 *dma_stats = efx->stats_buffer.addr;
961
962 dma_stats[MC_CMD_MAC_GENERATION_END] = EFX_MC_STATS_GENERATION_INVALID;
963
964 efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr,
965 MC_CMD_MAC_NSTATS * sizeof(u64), 1, 0);
966}
967
968void efx_mcdi_mac_stop_stats(struct efx_nic *efx)
969{
970 efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr, 0, 0, 0);
971}
972
973int efx_mcdi_port_probe(struct efx_nic *efx)
974{
975 int rc;
976
977 /* Hook in PHY operations table */
978 efx->phy_op = &efx_mcdi_phy_ops;
979
980 /* Set up MDIO structure for PHY */
981 efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
982 efx->mdio.mdio_read = efx_mcdi_mdio_read;
983 efx->mdio.mdio_write = efx_mcdi_mdio_write;
984
985 /* Fill out MDIO structure, loopback modes, and initial link state */
986 rc = efx->phy_op->probe(efx);
987 if (rc != 0)
988 return rc;
989
990 /* Allocate buffer for stats */
991 rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer,
992 MC_CMD_MAC_NSTATS * sizeof(u64));
993 if (rc)
994 return rc;
995 netif_dbg(efx, probe, efx->net_dev,
996 "stats buffer at %llx (virt %p phys %llx)\n",
997 (u64)efx->stats_buffer.dma_addr,
998 efx->stats_buffer.addr,
999 (u64)virt_to_phys(efx->stats_buffer.addr));
1000
1001 efx_mcdi_mac_stats(efx, efx->stats_buffer.dma_addr, 0, 0, 1);
1002
1003 return 0;
1004}
1005
1006void efx_mcdi_port_remove(struct efx_nic *efx)
1007{
1008 efx->phy_op->remove(efx);
1009 efx_nic_free_buffer(efx, &efx->stats_buffer);
1010}
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-09 03:07:42 -0500