2 * (C) Copyright 2007 Michal Simek
3 * (C) Copyright 2004 Atmark Techno, Inc.
5 * Michal SIMEK <monstr@monstr.eu>
6 * Yasushi SHOJI <yashi@atmark-techno.com>
8 * See file CREDITS for list of people who contributed to this
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License as
13 * published by the Free Software Foundation; either version 2 of
14 * the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 #include <asm/microblaze_intc.h>
34 extern void microblaze_disable_interrupts (void);
35 extern void microblaze_enable_interrupts (void);
37 void enable_interrupts (void)
42 int disable_interrupts (void)
48 #ifdef CONFIG_SYS_INTC_0
49 #ifdef CONFIG_SYS_FSL_2
50 extern void fsl_init2 (void);
54 static struct irq_action vecs[CONFIG_SYS_INTC_0_NUM];
56 /* mapping structure to interrupt controller */
57 microblaze_intc_t *intc = (microblaze_intc_t *) (CONFIG_SYS_INTC_0_ADDR);
65 void enable_one_interrupt (int irq)
71 intc->ier = (mask | offset);
73 printf ("Enable one interrupt irq %x - mask %x,ier %x\n", offset, mask,
75 printf ("INTC isr %x, ier %x, iar %x, mer %x\n", intc->isr, intc->ier,
76 intc->iar, intc->mer);
80 void disable_one_interrupt (int irq)
86 intc->ier = (mask & ~offset);
88 printf ("Disable one interrupt irq %x - mask %x,ier %x\n", irq, mask,
90 printf ("INTC isr %x, ier %x, iar %x, mer %x\n", intc->isr, intc->ier,
91 intc->iar, intc->mer);
95 /* adding new handler for interrupt */
96 void install_interrupt_handler (int irq, interrupt_handler_t * hdlr, void *arg)
98 struct irq_action *act;
99 /* irq out of range */
100 if ((irq < 0) || (irq > CONFIG_SYS_INTC_0_NUM)) {
101 puts ("IRQ out of range\n");
105 if (hdlr) { /* enable */
109 enable_one_interrupt (irq);
110 } else { /* disable */
111 act->handler = (interrupt_handler_t *) def_hdlr;
112 act->arg = (void *)irq;
113 disable_one_interrupt (irq);
117 /* initialization interrupt controller - hardware */
118 void intc_init (void)
122 intc->iar = 0xFFFFFFFF;
123 /* XIntc_Start - hw_interrupt enable and all interrupt enable */
126 printf ("INTC isr %x, ier %x, iar %x, mer %x\n", intc->isr, intc->ier,
127 intc->iar, intc->mer);
131 int interrupts_init (void)
134 /* initialize irq list */
135 for (i = 0; i < CONFIG_SYS_INTC_0_NUM; i++) {
136 vecs[i].handler = (interrupt_handler_t *) def_hdlr;
137 vecs[i].arg = (void *)i;
140 /* initialize intc controller */
142 #ifdef CONFIG_SYS_FSL_2
145 enable_interrupts ();
149 void interrupt_handler (void)
151 int irqs = (intc->isr & intc->ier); /* find active interrupt */
155 printf ("INTC isr %x, ier %x, iar %x, mer %x\n", intc->isr, intc->ier,
156 intc->iar, intc->mer);
158 printf ("Interrupt handler on %x line, r14 %x\n", irqs, value);
160 struct irq_action *act = vecs;
165 ("Jumping to interrupt handler rutine addr %x,count %x,arg %x\n",
166 act->handler, act->count, act->arg);
168 act->handler (act->arg);
179 printf ("Dump INTC reg, isr %x, ier %x, iar %x, mer %x\n", intc->isr,
180 intc->ier, intc->iar, intc->mer);
182 printf ("Interrupt handler on %x line, r14 %x\n", irqs, value);
187 #if defined(CONFIG_CMD_IRQ)
188 #ifdef CONFIG_SYS_INTC_0
189 int do_irqinfo (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
192 struct irq_action *act = vecs;
194 puts ("\nInterrupt-Information:\n\n"
195 "Nr Routine Arg Count\n"
196 "-----------------------------\n");
198 for (i = 0; i < CONFIG_SYS_INTC_0_NUM; i++) {
199 if (act->handler != (interrupt_handler_t*) def_hdlr) {
200 printf ("%02d %08x %08x %d\n", i,
201 (int)act->handler, (int)act->arg, act->count);
209 int do_irqinfo (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
211 puts ("Undefined interrupt controller\n");