rmixl_intr.h revision 1.1.2.12 1 /* $NetBSD: rmixl_intr.h,v 1.1.2.12 2012/01/04 16:17:53 matt Exp $ */
2 /*-
3 * Copyright (c) 2010 The NetBSD Foundation, Inc.
4 * All rights reserved.
5 *
6 * This code is derived from software contributed to The NetBSD Foundation
7 * by Cliff Neighbors.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
29 */
30
31 #ifndef _MIPS_RMI_RMIXL_INTR_H_
32 #define _MIPS_RMI_RMIXL_INTR_H_
33
34 #ifdef _KERNEL_OPT
35 #include "opt_multiprocessor.h"
36 #endif
37
38 /*
39 * A 'vector' is bit number in EIRR/EIMR
40 * - IRT or non-IRT interrupts use vectors 8..63
41 * - vector or dynamically assigned (except for IPI and FMN)
42 */
43 #define NINTRVECS 64 /* bit width of the EIRR */
44 #define RMIXLP_NIRTS 160 /* #entries in Interrupt Redirection Table */
45 #define RMIXLR_NIRTS 32 /* #entries in Interrupt Redirection Table */
46 #define RMIXLS_NIRTS 32 /* #entries in Interrupt Redirection Table */
47
48 /*
49 * vectors (0 <= vec < 8) are CAUSE[8..15] (including softintrs and count/compare)
50 */
51 #define RMIXL_INTRVEC_IPI 8
52
53 #define RMIXLP_IRT_PCIE_MSIX 46
54
55 /*
56 * iv_list and ref count manage sharing of each vector
57 */
58 typedef struct rmixl_intrhand {
59 LIST_ENTRY(rmixl_intrhand) ih_link;
60 int (*ih_func)(void *);
61 void *ih_arg;
62 bool ih_mpsafe; /* true if does not need kernel lock */
63 uint8_t ih_vec; /* vector is bit number in EIRR/EIMR */
64 } rmixl_intrhand_t;
65
66 typedef struct rmixl_intrvec {
67 LIST_HEAD(, rmixl_intrhand) iv_hands;
68 TAILQ_ENTRY(rmixl_intrvec) iv_lruq_link;
69 rmixl_intrhand_t iv_intrhand;
70 uint8_t iv_ipl; /* interrupt priority */
71 } rmixl_intrvec_t;
72
73 typedef TAILQ_HEAD(rmixl_intrvecq, rmixl_intrvec) rmixl_intrvecq_t;
74
75 static inline int
76 rmixl_intr_deliver(int (*func)(void *), void *arg, bool mpsafe_p,
77 struct evcnt *ev, int ipl)
78 {
79 int rv;
80 #ifndef MULTIPROCESSOR
81 mpsafe_p = true;
82 #endif
83 if (mpsafe_p) {
84 rv = (*func)(arg);
85 } else {
86 KASSERTMSG(ipl == IPL_VM,
87 ("%s: %s: ipl (%d) != IPL_VM for KERNEL_LOCK",
88 __func__, ev->ev_name, ipl));
89 KERNEL_LOCK(1, NULL);
90 rv = (*func)(arg);
91 KERNEL_UNLOCK_ONE(NULL);
92 }
93 ev->ev_count++;
94 return rv;
95 }
96
97 /*
98 * stuff exported from rmixl_spl.S
99 */
100 extern const struct splsw rmixl_splsw;
101 extern uint64_t ipl_eimr_map[];
102 extern kmutex_t *rmixl_intr_lock;
103
104 void * rmixl_intr_establish(size_t /* irt */, int /* ipl */, int /* ist */,
105 int (*)(void *), void *, bool);
106 void rmixl_intr_disestablish(void *);
107 void * rmixl_vec_establish(size_t /* vec */, rmixl_intrhand_t *, int /* ipl */,
108 int (*)(void *), void *, bool);
109 void rmixl_vec_disestablish(void *);
110 size_t rmixl_intr_get_vec(int /* ipl */);
111 const char *
112 rmixl_intr_string(size_t);
113 const char *
114 rmixl_irt_string(size_t);
115 void rmixl_intr_init_cpu(struct cpu_info *);
116 void rmixl_intr_init_clk(void);
117 #ifdef MULTIPROCESSOR
118 void rmixl_intr_init_ipi(void);
119 #endif
120
121 void * gpio_intr_establish(size_t /* pin */, int /* ipl */, int /* ist */,
122 int (*)(void *), void *, bool);
123
124 void gpio_intr_disestablish(void *);
125 #endif /* _MIPS_RMI_RMIXL_INTR_H_ */
126