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("$FreeBSD$");
33
34#include "efx.h"
35#include "efx_impl.h"
36
37#if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2
38
39	__checkReturn	efx_rc_t
40ef10_intr_init(
41	__in		efx_nic_t *enp,
42	__in		efx_intr_type_t type,
43	__in		efsys_mem_t *esmp)
44{
45	_NOTE(ARGUNUSED(enp, type, esmp))
46	return (0);
47}
48
49			void
50ef10_intr_enable(
51	__in		efx_nic_t *enp)
52{
53	_NOTE(ARGUNUSED(enp))
54}
55
56			void
57ef10_intr_disable(
58	__in		efx_nic_t *enp)
59{
60	_NOTE(ARGUNUSED(enp))
61}
62
63			void
64ef10_intr_disable_unlocked(
65	__in		efx_nic_t *enp)
66{
67	_NOTE(ARGUNUSED(enp))
68}
69
70static	__checkReturn	efx_rc_t
71efx_mcdi_trigger_interrupt(
72	__in		efx_nic_t *enp,
73	__in		unsigned int level)
74{
75	efx_mcdi_req_t req;
76	EFX_MCDI_DECLARE_BUF(payload, MC_CMD_TRIGGER_INTERRUPT_IN_LEN,
77		MC_CMD_TRIGGER_INTERRUPT_OUT_LEN);
78	efx_rc_t rc;
79
80	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
81	    enp->en_family == EFX_FAMILY_MEDFORD ||
82	    enp->en_family == EFX_FAMILY_MEDFORD2);
83
84	if (level >= enp->en_nic_cfg.enc_intr_limit) {
85		rc = EINVAL;
86		goto fail1;
87	}
88
89	req.emr_cmd = MC_CMD_TRIGGER_INTERRUPT;
90	req.emr_in_buf = payload;
91	req.emr_in_length = MC_CMD_TRIGGER_INTERRUPT_IN_LEN;
92	req.emr_out_buf = payload;
93	req.emr_out_length = MC_CMD_TRIGGER_INTERRUPT_OUT_LEN;
94
95	MCDI_IN_SET_DWORD(req, TRIGGER_INTERRUPT_IN_INTR_LEVEL, level);
96
97	efx_mcdi_execute(enp, &req);
98
99	if (req.emr_rc != 0) {
100		rc = req.emr_rc;
101		goto fail2;
102	}
103
104	return (0);
105
106fail2:
107	EFSYS_PROBE(fail2);
108
109fail1:
110	EFSYS_PROBE1(fail1, efx_rc_t, rc);
111
112	return (rc);
113}
114
115	__checkReturn	efx_rc_t
116ef10_intr_trigger(
117	__in		efx_nic_t *enp,
118	__in		unsigned int level)
119{
120	efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
121	efx_rc_t rc;
122
123	if (encp->enc_bug41750_workaround) {
124		/*
125		 * bug 41750: Test interrupts don't work on Greenport
126		 * bug 50084: Test interrupts don't work on VFs
127		 */
128		rc = ENOTSUP;
129		goto fail1;
130	}
131
132	if ((rc = efx_mcdi_trigger_interrupt(enp, level)) != 0)
133		goto fail2;
134
135	return (0);
136
137fail2:
138	EFSYS_PROBE(fail2);
139fail1:
140	EFSYS_PROBE1(fail1, efx_rc_t, rc);
141
142	return (rc);
143}
144
145			void
146ef10_intr_status_line(
147	__in		efx_nic_t *enp,
148	__out		boolean_t *fatalp,
149	__out		uint32_t *qmaskp)
150{
151	efx_dword_t dword;
152
153	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
154	    enp->en_family == EFX_FAMILY_MEDFORD ||
155	    enp->en_family == EFX_FAMILY_MEDFORD2);
156
157	/* Read the queue mask and implicitly acknowledge the interrupt. */
158	EFX_BAR_READD(enp, ER_DZ_BIU_INT_ISR_REG, &dword, B_FALSE);
159	*qmaskp = EFX_DWORD_FIELD(dword, EFX_DWORD_0);
160
161	EFSYS_PROBE1(qmask, uint32_t, *qmaskp);
162
163	*fatalp = B_FALSE;
164}
165
166			void
167ef10_intr_status_message(
168	__in		efx_nic_t *enp,
169	__in		unsigned int message,
170	__out		boolean_t *fatalp)
171{
172	EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON ||
173	    enp->en_family == EFX_FAMILY_MEDFORD ||
174	    enp->en_family == EFX_FAMILY_MEDFORD2);
175
176	_NOTE(ARGUNUSED(enp, message))
177
178	/* EF10 fatal errors are reported via events */
179	*fatalp = B_FALSE;
180}
181
182			void
183ef10_intr_fatal(
184	__in		efx_nic_t *enp)
185{
186	/* EF10 fatal errors are reported via events */
187	_NOTE(ARGUNUSED(enp))
188}
189
190			void
191ef10_intr_fini(
192	__in		efx_nic_t *enp)
193{
194	_NOTE(ARGUNUSED(enp))
195}
196
197#endif	/* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD || EFSYS_OPT_MEDFORD2 */
198