footbridge_intr.h revision 1.3
1 /* $NetBSD: footbridge_intr.h,v 1.3 2002/11/11 20:44:41 chris Exp $ */ 2 3 /* 4 * Copyright (c) 2001, 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 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 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 #ifndef _FOOTBRIDGE_INTR_H_ 39 #define _FOOTBRIDGE_INTR_H_ 40 41 #include <arm/armreg.h> 42 43 /* Define the various Interrupt Priority Levels */ 44 45 /* Hardware Interrupt Priority Levels are not mutually exclusive. */ 46 47 #define IPL_NONE 0 /* nothing */ 48 #define IPL_SOFT 1 /* generic soft interrupts */ 49 #define IPL_SOFTCLOCK 2 /* clock software interrupts */ 50 #define IPL_SOFTNET 3 /* network software interrupts */ 51 #define IPL_BIO 4 /* block I/O */ 52 #define IPL_NET 5 /* network */ 53 #define IPL_SOFTSERIAL 6 /* serial software interrupts */ 54 #define IPL_TTY 7 /* terminal */ 55 #define IPL_IMP 8 /* memory allocation */ 56 #define IPL_AUDIO 9 /* audio */ 57 #define IPL_CLOCK 10 /* clock */ 58 #define IPL_STATCLOCK 11 /* statclock */ 59 #define IPL_HIGH 12 /* everything */ 60 #define IPL_SERIAL 13 /* serial */ 61 62 #define NIPL 14 63 64 #define IST_UNUSABLE -1 /* interrupt cannot be used */ 65 #define IST_NONE 0 /* none (dummy) */ 66 #define IST_PULSE 1 /* pulsed */ 67 #define IST_EDGE 2 /* edge-triggered */ 68 #define IST_LEVEL 3 /* level-triggered */ 69 70 #define __NEWINTR /* enables new hooks in cpu_fork()/cpu_switch() */ 71 72 #ifndef _LOCORE 73 #include <arm/cpufunc.h> 74 75 #include <arm/footbridge/dc21285mem.h> 76 #include <arm/footbridge/dc21285reg.h> 77 78 #define INT_SWMASK \ 79 ((1U << IRQ_SOFTINT) | (1U << IRQ_RESERVED0) | \ 80 (1U << IRQ_RESERVED1) | (1U << IRQ_RESERVED2)) 81 #define ICU_INT_HWMASK (0xffffffff & ~(INT_SWMASK | (1U << IRQ_RESERVED3))) 82 83 /* only call this with interrupts off */ 84 static __inline void __attribute__((__unused__)) 85 footbridge_set_intrmask(void) 86 { 87 extern __volatile uint32_t intr_enabled; 88 /* fetch once so we write the same number to both registers */ 89 uint32_t tmp = intr_enabled & ICU_INT_HWMASK; 90 91 ((__volatile uint32_t*)(DC21285_ARMCSR_VBASE))[IRQ_ENABLE_SET>>2] = tmp; 92 ((__volatile uint32_t*)(DC21285_ARMCSR_VBASE))[IRQ_ENABLE_CLEAR>>2] = ~tmp; 93 } 94 95 static __inline void __attribute__((__unused__)) 96 footbridge_splx(int newspl) 97 { 98 extern __volatile uint32_t intr_enabled; 99 extern __volatile int current_spl_level; 100 extern __volatile int footbridge_ipending; 101 extern void footbridge_do_pending(void); 102 int oldirqstate, hwpend; 103 104 current_spl_level = newspl; 105 106 hwpend = (footbridge_ipending & ICU_INT_HWMASK) & ~newspl; 107 if (hwpend != 0) { 108 oldirqstate = disable_interrupts(I32_bit); 109 intr_enabled |= hwpend; 110 footbridge_set_intrmask(); 111 restore_interrupts(oldirqstate); 112 } 113 114 if ((footbridge_ipending & INT_SWMASK) & ~newspl) 115 footbridge_do_pending(); 116 } 117 118 static __inline int __attribute__((__unused__)) 119 footbridge_splraise(int ipl) 120 { 121 extern __volatile int current_spl_level; 122 extern int footbridge_imask[]; 123 int old; 124 125 old = current_spl_level; 126 current_spl_level |= footbridge_imask[ipl]; 127 128 return (old); 129 } 130 131 static __inline int __attribute__((__unused__)) 132 footbridge_spllower(int ipl) 133 { 134 extern __volatile int current_spl_level; 135 extern int footbridge_imask[]; 136 int old = current_spl_level; 137 138 footbridge_splx(footbridge_imask[ipl]); 139 return(old); 140 } 141 142 /* should only be defined in footbridge_intr.c */ 143 #if !defined(ARM_SPL_NOINLINE) 144 145 #define splx(newspl) footbridge_splx(newspl) 146 #define _spllower(ipl) footbridge_spllower(ipl) 147 #define _splraise(ipl) footbridge_splraise(ipl) 148 void _setsoftintr(int); 149 150 #else 151 152 int _splraise(int); 153 int _spllower(int); 154 void splx(int); 155 void _setsoftintr(int); 156 157 #endif /* ! ARM_SPL_NOINLINE */ 158 159 #include <sys/device.h> 160 #include <sys/queue.h> 161 #include <machine/irqhandler.h> 162 163 #define splsoft() _splraise(IPL_SOFT) 164 #define splsoftclock() _splraise(IPL_SOFTCLOCK) 165 #define splsoftnet() _splraise(IPL_SOFTNET) 166 #define splbio() _splraise(IPL_BIO) 167 #define splnet() _splraise(IPL_NET) 168 #define splsoftserial() _splraise(IPL_SOFTSERIAL) 169 #define spltty() _splraise(IPL_TTY) 170 #define spllpt() spltty() 171 #define splvm() _splraise(IPL_IMP) 172 #define splaudio() _splraise(IPL_AUDIO) 173 #define splclock() _splraise(IPL_CLOCK) 174 #define splstatclock() _splraise(IPL_STATCLOCK) 175 #define splhigh() _splraise(IPL_HIGH) 176 #define splserial() _splraise(IPL_SERIAL) 177 178 #define spl0() (void)_spllower(IPL_NONE) 179 #define spllowersoftclock() (void)_spllower(IPL_SOFTCLOCK) 180 181 #define splsched() splhigh() 182 #define spllock() splhigh() 183 184 /* Use generic software interrupt support. */ 185 #include <arm/softintr.h> 186 187 /* footbridge has 32 interrupt lines */ 188 #define NIRQ 32 189 190 struct intrhand { 191 TAILQ_ENTRY(intrhand) ih_list; /* link on intrq list */ 192 int (*ih_func)(void *); /* handler */ 193 void *ih_arg; /* arg for handler */ 194 int ih_ipl; /* IPL_* */ 195 int ih_irq; /* IRQ number */ 196 }; 197 198 #define IRQNAMESIZE sizeof("footbridge irq 31") 199 200 struct intrq { 201 TAILQ_HEAD(, intrhand) iq_list; /* handler list */ 202 struct evcnt iq_ev; /* event counter */ 203 int iq_mask; /* IRQs to mask while handling */ 204 int iq_levels; /* IPL_*'s this IRQ has */ 205 int iq_ist; /* share type */ 206 char iq_name[IRQNAMESIZE]; /* interrupt name */ 207 }; 208 209 #endif /* _LOCORE */ 210 211 #endif /* _FOOTBRIDGE_INTR_H */ 212
Indexes created Tue Sep 30 20:09:53 GMT 2025