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Diffstat (limited to 'cpu/leon2/interrupts.c')
| -rw-r--r-- | cpu/leon2/interrupts.c | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/cpu/leon2/interrupts.c b/cpu/leon2/interrupts.c deleted file mode 100644 index 9b0da96..0000000 --- a/cpu/leon2/interrupts.c +++ /dev/null @@ -1,217 +0,0 @@ -/* - * (C) Copyright 2007 - * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com - * - * (C) Copyright 2006 - * Detlev Zundel, DENX Software Engineering, dzu@denx.de - * - * (C) Copyright -2003 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * (C) Copyright 2001 - * Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc. - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include <asm/stack.h> -#include <common.h> -#include <asm/io.h> -#include <asm/processor.h> -#include <command.h> -#include <asm/irq.h> - -#include <asm/leon.h> - -/* 15 normal irqs and a non maskable interrupt */ -#define NR_IRQS 15 - -struct irq_action { - interrupt_handler_t *handler; - void *arg; - unsigned int count; -}; - -static struct irq_action irq_handlers[NR_IRQS] = { {0}, }; -static int spurious_irq_cnt = 0; -static int spurious_irq = 0; - -static inline unsigned int leon2_get_irqmask(unsigned int irq) -{ - if ((irq < 0) || (irq >= NR_IRQS)) { - return 0; - } else { - return (1 << irq); - } -} - -static void leon2_ic_disable(unsigned int irq) -{ - unsigned int mask, pil; - LEON2_regs *leon2 = (LEON2_regs *) LEON2_PREGS; - - pil = intLock(); - - /* get mask of interrupt */ - mask = leon2_get_irqmask(irq); - - /* set int level */ - leon2->Interrupt_Mask = - SPARC_NOCACHE_READ(&leon2->Interrupt_Mask) & (~mask); - - intUnlock(pil); -} - -static void leon2_ic_enable(unsigned int irq) -{ - unsigned int mask, pil; - LEON2_regs *leon2 = (LEON2_regs *) LEON2_PREGS; - - pil = intLock(); - - /* get mask of interrupt */ - mask = leon2_get_irqmask(irq); - - /* set int level */ - leon2->Interrupt_Mask = - SPARC_NOCACHE_READ(&leon2->Interrupt_Mask) | mask; - - intUnlock(pil); -} - -void handler_irq(int irq, struct pt_regs *regs) -{ - if (irq_handlers[irq].handler) { - if (((unsigned int)irq_handlers[irq].handler > CONFIG_SYS_RAM_END) || - ((unsigned int)irq_handlers[irq].handler < CONFIG_SYS_RAM_BASE) - ) { - printf("handler_irq: bad handler: %x, irq number %d\n", - (unsigned int)irq_handlers[irq].handler, irq); - return; - } - irq_handlers[irq].handler(irq_handlers[irq].arg); - irq_handlers[irq].count++; - } else { - spurious_irq_cnt++; - spurious_irq = irq; - } -} - -void leon2_force_int(int irq) -{ - LEON2_regs *leon2 = (LEON2_regs *) LEON2_PREGS; - - if ((irq >= NR_IRQS) || (irq < 0)) - return; - printf("Forcing interrupt %d\n", irq); - - leon2->Interrupt_Force = - SPARC_NOCACHE_READ(&leon2->Interrupt_Force) | (1 << irq); -} - -/****************************************************************************/ - -int interrupt_init_cpu(void) -{ - return (0); -} - -/****************************************************************************/ - -/* Handle Timer 0 IRQ */ -void timer_interrupt_cpu(void *arg) -{ - LEON2_regs *leon2 = (LEON2_regs *) LEON2_PREGS; - - leon2->Timer_Control_1 = - (LEON2_TIMER_CTRL_EN | LEON2_TIMER_CTRL_RS | LEON2_TIMER_CTRL_LD); - - /* nothing to do here */ - return; -} - -/****************************************************************************/ - -/* - * Install and free a interrupt handler. - */ - -void irq_install_handler(int irq, interrupt_handler_t * handler, void *arg) -{ - if (irq < 0 || irq >= NR_IRQS) { - printf("irq_install_handler: bad irq number %d\n", irq); - return; - } - - if (irq_handlers[irq].handler != NULL) - printf("irq_install_handler: 0x%08lx replacing 0x%08lx\n", - (ulong) handler, (ulong) irq_handlers[irq].handler); - - if (((unsigned int)handler > CONFIG_SYS_RAM_END) || - ((unsigned int)handler < CONFIG_SYS_RAM_BASE) - ) { - printf("irq_install_handler: bad handler: %x, irq number %d\n", - (unsigned int)handler, irq); - return; - } - irq_handlers[irq].handler = handler; - irq_handlers[irq].arg = arg; - - /* enable irq on LEON2 hardware */ - leon2_ic_enable(irq); - -} - -void irq_free_handler(int irq) -{ - if (irq < 0 || irq >= NR_IRQS) { - printf("irq_free_handler: bad irq number %d\n", irq); - return; - } - - /* disable irq on LEON2 hardware */ - leon2_ic_disable(irq); - - irq_handlers[irq].handler = NULL; - irq_handlers[irq].arg = NULL; -} - -/****************************************************************************/ - -#if defined(CONFIG_CMD_IRQ) -void do_irqinfo(cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char *argv[]) -{ - int irq; - unsigned int pil = get_pil(); - printf("PIL level: %u\n\r", pil); - printf("Spurious IRQ: %u, last unknown IRQ: %d\n", - spurious_irq_cnt, spurious_irq); - - puts("\nInterrupt-Information:\n" "Nr Routine Arg Count\n"); - - for (irq = 0; irq < NR_IRQS; irq++) { - if (irq_handlers[irq].handler != NULL) { - printf("%02d %08lx %08lx %ld\n", irq, - (unsigned int)irq_handlers[irq].handler, - (unsigned int)irq_handlers[irq].arg, - irq_handlers[irq].count); - } - } -} -#endif |