efx_port.c revision 310928 
1/*-
2 * Copyright (c) 2009-2016 Solarflare Communications Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice,
9 *    this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 *    this list of conditions and the following disclaimer in the documentation
12 *    and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
21 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
23 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
24 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * The views and conclusions contained in the software and documentation are
27 * those of the authors and should not be interpreted as representing official
28 * policies, either expressed or implied, of the FreeBSD Project.
29 */
30
31#include <sys/cdefs.h>
32__FBSDID("$FreeBSD: stable/11/sys/dev/sfxge/common/efx_port.c 310928 2016-12-31 11:10:01Z arybchik $");
33
34#include "efx.h"
35#include "efx_impl.h"
36
37	__checkReturn	efx_rc_t
38efx_port_init(
39	__in		efx_nic_t *enp)
40{
41	efx_port_t *epp = &(enp->en_port);
42	const efx_phy_ops_t *epop = epp->ep_epop;
43	efx_rc_t rc;
44
45	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
46	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
47	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
48
49	if (enp->en_mod_flags & EFX_MOD_PORT) {
50		rc = EINVAL;
51		goto fail1;
52	}
53
54	enp->en_mod_flags |= EFX_MOD_PORT;
55
56	epp->ep_mac_type = EFX_MAC_INVALID;
57	epp->ep_link_mode = EFX_LINK_UNKNOWN;
58	epp->ep_mac_drain = B_TRUE;
59
60	/* Configure the MAC */
61	if ((rc = efx_mac_select(enp)) != 0)
62		goto fail1;
63
64	epp->ep_emop->emo_reconfigure(enp);
65
66	/* Pick up current phy capababilities */
67	efx_port_poll(enp, NULL);
68
69	/*
70	 * Turn on the PHY if available, otherwise reset it, and
71	 * reconfigure it with the current configuration.
72	 */
73	if (epop->epo_power != NULL) {
74		if ((rc = epop->epo_power(enp, B_TRUE)) != 0)
75			goto fail2;
76	} else {
77		if ((rc = epop->epo_reset(enp)) != 0)
78			goto fail2;
79	}
80
81	EFSYS_ASSERT(enp->en_reset_flags & EFX_RESET_PHY);
82	enp->en_reset_flags &= ~EFX_RESET_PHY;
83
84	if ((rc = epop->epo_reconfigure(enp)) != 0)
85		goto fail3;
86
87	return (0);
88
89fail3:
90	EFSYS_PROBE(fail3);
91fail2:
92	EFSYS_PROBE(fail2);
93fail1:
94	EFSYS_PROBE1(fail1, efx_rc_t, rc);
95
96	enp->en_mod_flags &= ~EFX_MOD_PORT;
97
98	return (rc);
99}
100
101	__checkReturn	efx_rc_t
102efx_port_poll(
103	__in		efx_nic_t *enp,
104	__out_opt	efx_link_mode_t	*link_modep)
105{
106	efx_port_t *epp = &(enp->en_port);
107	const efx_mac_ops_t *emop = epp->ep_emop;
108	efx_link_mode_t ignore_link_mode;
109	efx_rc_t rc;
110
111	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
112	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PORT);
113
114	EFSYS_ASSERT(emop != NULL);
115	EFSYS_ASSERT(!epp->ep_mac_stats_pending);
116
117	if (link_modep == NULL)
118		link_modep = &ignore_link_mode;
119
120	if ((rc = emop->emo_poll(enp, link_modep)) != 0)
121		goto fail1;
122
123	return (0);
124
125fail1:
126	EFSYS_PROBE1(fail1, efx_rc_t, rc);
127
128	return (rc);
129}
130
131#if EFSYS_OPT_LOOPBACK
132
133	__checkReturn	efx_rc_t
134efx_port_loopback_set(
135	__in		efx_nic_t *enp,
136	__in		efx_link_mode_t link_mode,
137	__in		efx_loopback_type_t loopback_type)
138{
139	efx_port_t *epp = &(enp->en_port);
140	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
141	const efx_mac_ops_t *emop = epp->ep_emop;
142	efx_rc_t rc;
143
144	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
145	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PORT);
146	EFSYS_ASSERT(emop != NULL);
147
148	EFSYS_ASSERT(link_mode < EFX_LINK_NMODES);
149
150	if (EFX_TEST_QWORD_BIT(encp->enc_loopback_types[link_mode],
151		loopback_type) == 0) {
152		rc = ENOTSUP;
153		goto fail1;
154	}
155
156	if (epp->ep_loopback_type == loopback_type &&
157	    epp->ep_loopback_link_mode == link_mode)
158		return (0);
159
160	if ((rc = emop->emo_loopback_set(enp, link_mode, loopback_type)) != 0)
161		goto fail2;
162
163	return (0);
164
165fail2:
166	EFSYS_PROBE(fail2);
167fail1:
168	EFSYS_PROBE1(fail1, efx_rc_t, rc);
169
170	return (rc);
171}
172
173#if EFSYS_OPT_NAMES
174
175static const char * const __efx_loopback_type_name[] = {
176	"OFF",
177	"DATA",
178	"GMAC",
179	"XGMII",
180	"XGXS",
181	"XAUI",
182	"GMII",
183	"SGMII",
184	"XGBR",
185	"XFI",
186	"XAUI_FAR",
187	"GMII_FAR",
188	"SGMII_FAR",
189	"XFI_FAR",
190	"GPHY",
191	"PHY_XS",
192	"PCS",
193	"PMA_PMD",
194	"XPORT",
195	"XGMII_WS",
196	"XAUI_WS",
197	"XAUI_WS_FAR",
198	"XAUI_WS_NEAR",
199	"GMII_WS",
200	"XFI_WS",
201	"XFI_WS_FAR",
202	"PHYXS_WS",
203	"PMA_INT",
204	"SD_NEAR",
205	"SD_FAR",
206	"PMA_INT_WS",
207	"SD_FEP2_WS",
208	"SD_FEP1_5_WS",
209	"SD_FEP_WS",
210	"SD_FES_WS",
211};
212
213	__checkReturn	const char *
214efx_loopback_type_name(
215	__in		efx_nic_t *enp,
216	__in		efx_loopback_type_t type)
217{
218	EFX_STATIC_ASSERT(EFX_ARRAY_SIZE(__efx_loopback_type_name) ==
219	    EFX_LOOPBACK_NTYPES);
220
221	_NOTE(ARGUNUSED(enp))
222	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
223	EFSYS_ASSERT3U(type, <, EFX_LOOPBACK_NTYPES);
224
225	return (__efx_loopback_type_name[type]);
226}
227
228#endif	/* EFSYS_OPT_NAMES */
229
230#endif	/* EFSYS_OPT_LOOPBACK */
231
232			void
233efx_port_fini(
234	__in		efx_nic_t *enp)
235{
236	efx_port_t *epp = &(enp->en_port);
237	const efx_phy_ops_t *epop = epp->ep_epop;
238
239	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
240	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
241	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
242	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PORT);
243
244	EFSYS_ASSERT(epp->ep_mac_drain);
245
246	epp->ep_emop = NULL;
247	epp->ep_mac_type = EFX_MAC_INVALID;
248	epp->ep_mac_drain = B_FALSE;
249
250	/* Turn off the PHY */
251	if (epop->epo_power != NULL)
252		(void) epop->epo_power(enp, B_FALSE);
253
254	enp->en_mod_flags &= ~EFX_MOD_PORT;
255}
256