xref: /freebsd/sys/dev/sfxge/common/efx_port.c (revision 39ee7a7a6bdd1557b1c3532abf60d139798ac88b)
1 /*-
2  * Copyright (c) 2009-2015 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("$FreeBSD$");
33 
34 #include "efsys.h"
35 #include "efx.h"
36 #include "efx_types.h"
37 #include "efx_impl.h"
38 
39 	__checkReturn	int
40 efx_port_init(
41 	__in		efx_nic_t *enp)
42 {
43 	efx_port_t *epp = &(enp->en_port);
44 	efx_phy_ops_t *epop = epp->ep_epop;
45 	int rc;
46 
47 	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
48 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
49 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
50 
51 	if (enp->en_mod_flags & EFX_MOD_PORT) {
52 		rc = EINVAL;
53 		goto fail1;
54 	}
55 
56 	enp->en_mod_flags |= EFX_MOD_PORT;
57 
58 	epp->ep_mac_type = EFX_MAC_INVALID;
59 	epp->ep_link_mode = EFX_LINK_UNKNOWN;
60 	epp->ep_mac_poll_needed = B_TRUE;
61 	epp->ep_mac_drain = B_TRUE;
62 
63 	/* Configure the MAC */
64 	if ((rc = efx_mac_select(enp)) != 0)
65 		goto fail1;
66 
67 	epp->ep_emop->emo_reconfigure(enp);
68 
69 	/* Pick up current phy capababilities */
70 	efx_port_poll(enp, NULL);
71 
72 	/*
73 	 * Turn on the PHY if available, otherwise reset it, and
74 	 * reconfigure it with the current configuration.
75 	 */
76 	if (epop->epo_power != NULL) {
77 		if ((rc = epop->epo_power(enp, B_TRUE)) != 0)
78 			goto fail2;
79 	} else {
80 		if ((rc = epop->epo_reset(enp)) != 0)
81 			goto fail2;
82 	}
83 
84 	EFSYS_ASSERT(enp->en_reset_flags & EFX_RESET_PHY);
85 	enp->en_reset_flags &= ~EFX_RESET_PHY;
86 
87 	if ((rc = epop->epo_reconfigure(enp)) != 0)
88 		goto fail3;
89 
90 	return (0);
91 
92 fail3:
93 	EFSYS_PROBE(fail3);
94 fail2:
95 	EFSYS_PROBE(fail2);
96 fail1:
97 	EFSYS_PROBE1(fail1, int, rc);
98 
99 	enp->en_mod_flags &= ~EFX_MOD_PORT;
100 
101 	return (rc);
102 }
103 
104 	__checkReturn	int
105 efx_port_poll(
106 	__in		efx_nic_t *enp,
107 	__out_opt	efx_link_mode_t	*link_modep)
108 {
109 	efx_port_t *epp = &(enp->en_port);
110 	efx_mac_ops_t *emop = epp->ep_emop;
111 	efx_link_mode_t ignore_link_mode;
112 	int rc;
113 
114 	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
115 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PORT);
116 
117 	EFSYS_ASSERT(emop != NULL);
118 	EFSYS_ASSERT(!epp->ep_mac_stats_pending);
119 
120 	if (link_modep == NULL)
121 		link_modep = &ignore_link_mode;
122 
123 	if ((rc = emop->emo_poll(enp, link_modep)) != 0)
124 		goto fail1;
125 
126 	return (0);
127 
128 fail1:
129 	EFSYS_PROBE1(fail1, int, rc);
130 
131 	return (rc);
132 }
133 
134 #if EFSYS_OPT_LOOPBACK
135 
136 	__checkReturn	int
137 efx_port_loopback_set(
138 	__in		efx_nic_t *enp,
139 	__in		efx_link_mode_t link_mode,
140 	__in		efx_loopback_type_t loopback_type)
141 {
142 	efx_port_t *epp = &(enp->en_port);
143 	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
144 	efx_mac_ops_t *emop = epp->ep_emop;
145 	int rc;
146 
147 	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
148 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PORT);
149 	EFSYS_ASSERT(emop != NULL);
150 
151 	EFSYS_ASSERT(link_mode < EFX_LINK_NMODES);
152 
153 	if (EFX_TEST_QWORD_BIT(encp->enc_loopback_types[link_mode],
154 		loopback_type) == 0) {
155 		rc = ENOTSUP;
156 		goto fail1;
157 	}
158 
159 	if (epp->ep_loopback_type == loopback_type &&
160 	    epp->ep_loopback_link_mode == link_mode)
161 		return (0);
162 
163 	if ((rc = emop->emo_loopback_set(enp, link_mode, loopback_type)) != 0)
164 		goto fail2;
165 
166 	return (0);
167 
168 fail2:
169 	EFSYS_PROBE(fail2);
170 fail1:
171 	EFSYS_PROBE1(fail1, int, rc);
172 
173 	return (rc);
174 }
175 
176 #if EFSYS_OPT_NAMES
177 
178 static const char 	*__efx_loopback_type_name[] = {
179 	"OFF",
180 	"DATA",
181 	"GMAC",
182 	"XGMII",
183 	"XGXS",
184 	"XAUI",
185 	"GMII",
186 	"SGMII",
187 	"XGBR",
188 	"XFI",
189 	"XAUI_FAR",
190 	"GMII_FAR",
191 	"SGMII_FAR",
192 	"XFI_FAR",
193 	"GPHY",
194 	"PHY_XS",
195 	"PCS",
196 	"PMA_PMD",
197 	"XPORT",
198 	"XGMII_WS",
199 	"XAUI_WS",
200 	"XAUI_WS_FAR",
201 	"XAUI_WS_NEAR",
202 	"GMII_WS",
203 	"XFI_WS",
204 	"XFI_WS_FAR",
205 	"PHYXS_WS",
206 	"PMA_INT",
207 	"SD_NEAR",
208 	"SD_FAR",
209 	"PMA_INT_WS",
210 	"SD_FEP2_WS",
211 	"SD_FEP1_5_WS",
212 	"SD_FEP_WS",
213 	"SD_FES_WS",
214 };
215 
216 	__checkReturn	const char *
217 efx_loopback_type_name(
218 	__in		efx_nic_t *enp,
219 	__in		efx_loopback_type_t type)
220 {
221 	EFX_STATIC_ASSERT(EFX_ARRAY_SIZE(__efx_loopback_type_name) ==
222 	    EFX_LOOPBACK_NTYPES);
223 
224 	_NOTE(ARGUNUSED(enp))
225 	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
226 	EFSYS_ASSERT3U(type, <, EFX_LOOPBACK_NTYPES);
227 
228 	return (__efx_loopback_type_name[type]);
229 }
230 
231 #endif	/* EFSYS_OPT_NAMES */
232 
233 #endif	/* EFSYS_OPT_LOOPBACK */
234 
235 			void
236 efx_port_fini(
237 	__in		efx_nic_t *enp)
238 {
239 	efx_port_t *epp = &(enp->en_port);
240 	efx_phy_ops_t *epop = epp->ep_epop;
241 
242 	EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
243 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PROBE);
244 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_NIC);
245 	EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_PORT);
246 
247 	EFSYS_ASSERT(epp->ep_mac_drain);
248 
249 	epp->ep_emop = NULL;
250 	epp->ep_mac_type = EFX_MAC_INVALID;
251 	epp->ep_mac_drain = B_FALSE;
252 	epp->ep_mac_poll_needed = B_FALSE;
253 
254 	/* Turn off the PHY */
255 	if (epop->epo_power != NULL)
256 		(void) epop->epo_power(enp, B_FALSE);
257 
258 	enp->en_mod_flags &= ~EFX_MOD_PORT;
259 }
260