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 #include "efx.h"
33 #include "efx_impl.h"
34
35 #if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2
36
37 __checkReturn efx_rc_t
ef10_intr_init(__in efx_nic_t * enp,__in efx_intr_type_t type,__in efsys_mem_t * esmp)38 ef10_intr_init(
39 __in efx_nic_t *enp,
40 __in efx_intr_type_t type,
41 __in efsys_mem_t *esmp)
42 {
43 _NOTE(ARGUNUSED(enp, type, esmp))
44 return (0);
45 }
46
47 void
ef10_intr_enable(__in efx_nic_t * enp)48 ef10_intr_enable(
49 __in efx_nic_t *enp)
50 {
51 _NOTE(ARGUNUSED(enp))
52 }
53
54 void
ef10_intr_disable(__in efx_nic_t * enp)55 ef10_intr_disable(
56 __in efx_nic_t *enp)
57 {
58 _NOTE(ARGUNUSED(enp))
59 }
60
61 void
ef10_intr_disable_unlocked(__in efx_nic_t * enp)62 ef10_intr_disable_unlocked(
63 __in efx_nic_t *enp)
64 {
65 _NOTE(ARGUNUSED(enp))
66 }
67
68 static __checkReturn efx_rc_t
efx_mcdi_trigger_interrupt(__in efx_nic_t * enp,__in unsigned int level)69 efx_mcdi_trigger_interrupt(
70 __in efx_nic_t *enp,
71 __in unsigned int level)
72 {
73 efx_mcdi_req_t req;
74 EFX_MCDI_DECLARE_BUF(payload, MC_CMD_TRIGGER_INTERRUPT_IN_LEN,
75 MC_CMD_TRIGGER_INTERRUPT_OUT_LEN);
76 efx_rc_t rc;
77
78 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
79 enp->en_family == EFX_FAMILY_MEDFORD ||
80 enp->en_family == EFX_FAMILY_MEDFORD2);
81
82 if (level >= enp->en_nic_cfg.enc_intr_limit) {
83 rc = EINVAL;
84 goto fail1;
85 }
86
87 req.emr_cmd = MC_CMD_TRIGGER_INTERRUPT;
88 req.emr_in_buf = payload;
89 req.emr_in_length = MC_CMD_TRIGGER_INTERRUPT_IN_LEN;
90 req.emr_out_buf = payload;
91 req.emr_out_length = MC_CMD_TRIGGER_INTERRUPT_OUT_LEN;
92
93 MCDI_IN_SET_DWORD(req, TRIGGER_INTERRUPT_IN_INTR_LEVEL, level);
94
95 efx_mcdi_execute(enp, &req);
96
97 if (req.emr_rc != 0) {
98 rc = req.emr_rc;
99 goto fail2;
100 }
101
102 return (0);
103
104 fail2:
105 EFSYS_PROBE(fail2);
106
107 fail1:
108 EFSYS_PROBE1(fail1, efx_rc_t, rc);
109
110 return (rc);
111 }
112
113 __checkReturn efx_rc_t
ef10_intr_trigger(__in efx_nic_t * enp,__in unsigned int level)114 ef10_intr_trigger(
115 __in efx_nic_t *enp,
116 __in unsigned int level)
117 {
118 efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
119 efx_rc_t rc;
120
121 if (encp->enc_bug41750_workaround) {
122 /*
123 * bug 41750: Test interrupts don't work on Greenport
124 * bug 50084: Test interrupts don't work on VFs
125 */
126 rc = ENOTSUP;
127 goto fail1;
128 }
129
130 if ((rc = efx_mcdi_trigger_interrupt(enp, level)) != 0)
131 goto fail2;
132
133 return (0);
134
135 fail2:
136 EFSYS_PROBE(fail2);
137 fail1:
138 EFSYS_PROBE1(fail1, efx_rc_t, rc);
139
140 return (rc);
141 }
142
143 void
ef10_intr_status_line(__in efx_nic_t * enp,__out boolean_t * fatalp,__out uint32_t * qmaskp)144 ef10_intr_status_line(
145 __in efx_nic_t *enp,
146 __out boolean_t *fatalp,
147 __out uint32_t *qmaskp)
148 {
149 efx_dword_t dword;
150
151 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
152 enp->en_family == EFX_FAMILY_MEDFORD ||
153 enp->en_family == EFX_FAMILY_MEDFORD2);
154
155 /* Read the queue mask and implicitly acknowledge the interrupt. */
156 EFX_BAR_READD(enp, ER_DZ_BIU_INT_ISR_REG, &dword, B_FALSE);
157 *qmaskp = EFX_DWORD_FIELD(dword, EFX_DWORD_0);
158
159 EFSYS_PROBE1(qmask, uint32_t, *qmaskp);
160
161 *fatalp = B_FALSE;
162 }
163
164 void
ef10_intr_status_message(__in efx_nic_t * enp,__in unsigned int message,__out boolean_t * fatalp)165 ef10_intr_status_message(
166 __in efx_nic_t *enp,
167 __in unsigned int message,
168 __out boolean_t *fatalp)
169 {
170 EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
171 enp->en_family == EFX_FAMILY_MEDFORD ||
172 enp->en_family == EFX_FAMILY_MEDFORD2);
173
174 _NOTE(ARGUNUSED(enp, message))
175
176 /* EF10 fatal errors are reported via events */
177 *fatalp = B_FALSE;
178 }
179
180 void
ef10_intr_fatal(__in efx_nic_t * enp)181 ef10_intr_fatal(
182 __in efx_nic_t *enp)
183 {
184 /* EF10 fatal errors are reported via events */
185 _NOTE(ARGUNUSED(enp))
186 }
187
188 void
ef10_intr_fini(__in efx_nic_t * enp)189 ef10_intr_fini(
190 __in efx_nic_t *enp)
191 {
192 _NOTE(ARGUNUSED(enp))
193 }
194
195 #endif /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2 */
196