1 /*-
2 * Copyright (c) 2012-2016 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/12/sys/dev/sfxge/common/ef10_intr.c 342344 2018-12-21 16:57:59Z arybchik $");
33
34 #include "efx.h"
35 #include "efx_impl.h"
36
37
38 #if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD
39
40 __checkReturn efx_rc_t
ef10_intr_init(__in efx_nic_t * enp,__in efx_intr_type_t type,__in efsys_mem_t * esmp)41 ef10_intr_init(
42 __in efx_nic_t *enp,
43 __in efx_intr_type_t type,
44 __in efsys_mem_t *esmp)
45 {
46 _NOTE(ARGUNUSED(enp, type, esmp))
47 return (0);
48 }
49
50
51 void
ef10_intr_enable(__in efx_nic_t * enp)52 ef10_intr_enable(
53 __in efx_nic_t *enp)
54 {
55 _NOTE(ARGUNUSED(enp))
56 }
57
58
59 void
ef10_intr_disable(__in efx_nic_t * enp)60 ef10_intr_disable(
61 __in efx_nic_t *enp)
62 {
63 _NOTE(ARGUNUSED(enp))
64 }
65
66
67 void
ef10_intr_disable_unlocked(__in efx_nic_t * enp)68 ef10_intr_disable_unlocked(
69 __in efx_nic_t *enp)
70 {
71 _NOTE(ARGUNUSED(enp))
72 }
73
74
75 static __checkReturn efx_rc_t
efx_mcdi_trigger_interrupt(__in efx_nic_t * enp,__in unsigned int level)76 efx_mcdi_trigger_interrupt(
77 __in efx_nic_t *enp,
78 __in unsigned int level)
79 {
80 efx_mcdi_req_t req;
81 EFX_MCDI_DECLARE_BUF(payload, MC_CMD_TRIGGER_INTERRUPT_IN_LEN,
82 MC_CMD_TRIGGER_INTERRUPT_OUT_LEN);
83 efx_rc_t rc;
84
85 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
86 enp->en_family == EFX_FAMILY_MEDFORD);
87
88 if (level >= enp->en_nic_cfg.enc_intr_limit) {
89 rc = EINVAL;
90 goto fail1;
91 }
92
93 req.emr_cmd = MC_CMD_TRIGGER_INTERRUPT;
94 req.emr_in_buf = payload;
95 req.emr_in_length = MC_CMD_TRIGGER_INTERRUPT_IN_LEN;
96 req.emr_out_buf = payload;
97 req.emr_out_length = MC_CMD_TRIGGER_INTERRUPT_OUT_LEN;
98
99 MCDI_IN_SET_DWORD(req, TRIGGER_INTERRUPT_IN_INTR_LEVEL, level);
100
101 efx_mcdi_execute(enp, &req);
102
103 if (req.emr_rc != 0) {
104 rc = req.emr_rc;
105 goto fail2;
106 }
107
108 return (0);
109
110 fail2:
111 EFSYS_PROBE(fail2);
112
113 fail1:
114 EFSYS_PROBE1(fail1, efx_rc_t, rc);
115
116 return (rc);
117 }
118
119 __checkReturn efx_rc_t
ef10_intr_trigger(__in efx_nic_t * enp,__in unsigned int level)120 ef10_intr_trigger(
121 __in efx_nic_t *enp,
122 __in unsigned int level)
123 {
124 efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
125 efx_rc_t rc;
126
127 if (encp->enc_bug41750_workaround) {
128 /*
129 * bug 41750: Test interrupts don't work on Greenport
130 * bug 50084: Test interrupts don't work on VFs
131 */
132 rc = ENOTSUP;
133 goto fail1;
134 }
135
136 if ((rc = efx_mcdi_trigger_interrupt(enp, level)) != 0)
137 goto fail2;
138
139 return (0);
140
141 fail2:
142 EFSYS_PROBE(fail2);
143 fail1:
144 EFSYS_PROBE1(fail1, efx_rc_t, rc);
145
146 return (rc);
147 }
148
149 void
ef10_intr_status_line(__in efx_nic_t * enp,__out boolean_t * fatalp,__out uint32_t * qmaskp)150 ef10_intr_status_line(
151 __in efx_nic_t *enp,
152 __out boolean_t *fatalp,
153 __out uint32_t *qmaskp)
154 {
155 efx_dword_t dword;
156
157 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
158 enp->en_family == EFX_FAMILY_MEDFORD);
159
160 /* Read the queue mask and implicitly acknowledge the interrupt. */
161 EFX_BAR_READD(enp, ER_DZ_BIU_INT_ISR_REG, &dword, B_FALSE);
162 *qmaskp = EFX_DWORD_FIELD(dword, EFX_DWORD_0);
163
164 EFSYS_PROBE1(qmask, uint32_t, *qmaskp);
165
166 *fatalp = B_FALSE;
167 }
168
169 void
ef10_intr_status_message(__in efx_nic_t * enp,__in unsigned int message,__out boolean_t * fatalp)170 ef10_intr_status_message(
171 __in efx_nic_t *enp,
172 __in unsigned int message,
173 __out boolean_t *fatalp)
174 {
175 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
176 enp->en_family == EFX_FAMILY_MEDFORD);
177
178 _NOTE(ARGUNUSED(enp, message))
179
180 /* EF10 fatal errors are reported via events */
181 *fatalp = B_FALSE;
182 }
183
184 void
ef10_intr_fatal(__in efx_nic_t * enp)185 ef10_intr_fatal(
186 __in efx_nic_t *enp)
187 {
188 /* EF10 fatal errors are reported via events */
189 _NOTE(ARGUNUSED(enp))
190 }
191
192 void
ef10_intr_fini(__in efx_nic_t * enp)193 ef10_intr_fini(
194 __in efx_nic_t *enp)
195 {
196 _NOTE(ARGUNUSED(enp))
197 }
198
199 #endif /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD */
200