1 /* $NetBSD: rmixl_intr.h,v 1.3 2011/04/14 05:16:28 cliff 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 * - non-IRT-based interrupts use vectors 0..31 41 * - IRT-based interrupts use vectors 32..63 42 * - RMIXL_VECTOR_IRT(vec) is used to index into the IRT 43 * - IRT entry n always routes to vector RMIXL_IRT_VECTOR(n) 44 * - only 1 intrhand_t per vector 45 */ 46 #define NINTRVECS 64 /* bit width of the EIRR */ 47 #define NIRTS 32 /* #entries in the Interrupt Redirection Table */ 48 49 /* 50 * mapping between IRT index and vector number 51 */ 52 #define RMIXL_VECTOR_IS_IRT(vec) ((vec) >= 32) 53 #define RMIXL_IRT_VECTOR(irt) ((irt) + 32) 54 #define RMIXL_VECTOR_IRT(vec) ((vec) - 32) 55 56 /* 57 * vectors (0 <= vec < 8) are CAUSE[8..15] (including softintrs and count/compare) 58 * vectors (8 <= vec < 31) are for other non-IRT based interrupts 59 * we use one for FMN, and each IPI currently gets own vector; 60 * if NIPIS >= (32 - 8 - 1), then redesign so IPIs share vector(s) 61 */ 62 #if NIPIS >= 23 63 # error too many IPIs 64 #endif 65 #define RMIXL_INTRVEC_IPI 8 66 #define RMIXL_INTRVEC_FMN (RMIXL_INTRVEC_IPI + NIPIS) 67 68 typedef enum { 69 RMIXL_TRIG_NONE=0, 70 RMIXL_TRIG_EDGE, 71 RMIXL_TRIG_LEVEL, 72 } rmixl_intr_trigger_t; 73 74 typedef enum { 75 RMIXL_POLR_NONE=0, 76 RMIXL_POLR_RISING, 77 RMIXL_POLR_HIGH, 78 RMIXL_POLR_FALLING, 79 RMIXL_POLR_LOW, 80 } rmixl_intr_polarity_t; 81 82 83 /* 84 * iv_list and ref count manage sharing of each vector 85 */ 86 typedef struct rmixl_intrhand { 87 int (*ih_func)(void *); 88 void *ih_arg; 89 int ih_mpsafe; /* true if does not need kernel lock */ 90 int ih_vec; /* vector is bit number in EIRR/EIMR */ 91 int ih_ipl; /* interrupt priority */ 92 int ih_cpumask; /* CPUs which may handle this irpt */ 93 } rmixl_intrhand_t; 94 95 /* 96 * stuff exported from rmixl_spl.S 97 */ 98 extern const struct splsw rmixl_splsw; 99 extern uint64_t ipl_eimr_map[]; 100 101 extern void *rmixl_intr_establish(int, int, int, 102 rmixl_intr_trigger_t, rmixl_intr_polarity_t, 103 int (*)(void *), void *, bool); 104 extern void rmixl_intr_disestablish(void *); 105 extern void *rmixl_vec_establish(int, int, int, 106 int (*)(void *), void *, bool); 107 extern void rmixl_vec_disestablish(void *); 108 extern const char *rmixl_intr_string(int); 109 extern void rmixl_intr_init_cpu(struct cpu_info *); 110 extern void rmixl_intr_init_clk(void); 111 #ifdef MULTIPROCESSOR 112 extern void rmixl_intr_init_ipi(void); 113 #endif 114 115 #endif /* _MIPS_RMI_RMIXL_INTR_H_ */ 116