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author | Peter Tyser <ptyser@xes-inc.com> | 2010-04-12 22:28:09 -0500 |
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committer | Wolfgang Denk <wd@denx.de> | 2010-04-13 09:13:16 +0200 |
commit | 8d1f268204b07e172f3cb5cee0a3974d605b0b98 (patch) | |
tree | c3359e920cc886e7060fb099bf933496aca37153 /cpu/mpc5xxx/interrupts.c | |
parent | 819833af39a91fa1c1e8252862bbda6f5a602f7b (diff) | |
download | u-boot-imx-8d1f268204b07e172f3cb5cee0a3974d605b0b98.zip u-boot-imx-8d1f268204b07e172f3cb5cee0a3974d605b0b98.tar.gz u-boot-imx-8d1f268204b07e172f3cb5cee0a3974d605b0b98.tar.bz2 |
ppc: Move cpu/$CPU to arch/ppc/cpu/$CPU
Signed-off-by: Peter Tyser <ptyser@xes-inc.com>
Diffstat (limited to 'cpu/mpc5xxx/interrupts.c')
-rw-r--r-- | cpu/mpc5xxx/interrupts.c | 346 |
1 files changed, 0 insertions, 346 deletions
diff --git a/cpu/mpc5xxx/interrupts.c b/cpu/mpc5xxx/interrupts.c deleted file mode 100644 index 6035771..0000000 --- a/cpu/mpc5xxx/interrupts.c +++ /dev/null @@ -1,346 +0,0 @@ -/* - * (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 - */ - -/* this section was ripped out of arch/ppc/syslib/mpc52xx_pic.c in the - * Linux 2.6 source with the following copyright. - * - * Based on (well, mostly copied from) the code from the 2.4 kernel by - * Dale Farnsworth <dfarnsworth@mvista.com> and Kent Borg. - * - * Copyright (C) 2004 Sylvain Munaut <tnt@246tNt.com> - * Copyright (C) 2003 Montavista Software, Inc - */ - -#include <common.h> -#include <asm/processor.h> -#include <asm/io.h> -#include <command.h> - -struct irq_action { - interrupt_handler_t *handler; - void *arg; - ulong count; -}; - -static struct irq_action irq_handlers[NR_IRQS]; - -static struct mpc5xxx_intr *intr; -static struct mpc5xxx_sdma *sdma; - -static void mpc5xxx_ic_disable(unsigned int irq) -{ - u32 val; - - if (irq == MPC5XXX_IRQ0) { - val = in_be32(&intr->ctrl); - val &= ~(1 << 11); - out_be32(&intr->ctrl, val); - } else if (irq < MPC5XXX_IRQ1) { - BUG(); - } else if (irq <= MPC5XXX_IRQ3) { - val = in_be32(&intr->ctrl); - val &= ~(1 << (10 - (irq - MPC5XXX_IRQ1))); - out_be32(&intr->ctrl, val); - } else if (irq < MPC5XXX_SDMA_IRQ_BASE) { - val = in_be32(&intr->main_mask); - val |= 1 << (16 - (irq - MPC5XXX_MAIN_IRQ_BASE)); - out_be32(&intr->main_mask, val); - } else if (irq < MPC5XXX_PERP_IRQ_BASE) { - val = in_be32(&sdma->IntMask); - val |= 1 << (irq - MPC5XXX_SDMA_IRQ_BASE); - out_be32(&sdma->IntMask, val); - } else { - val = in_be32(&intr->per_mask); - val |= 1 << (31 - (irq - MPC5XXX_PERP_IRQ_BASE)); - out_be32(&intr->per_mask, val); - } -} - -static void mpc5xxx_ic_enable(unsigned int irq) -{ - u32 val; - - if (irq == MPC5XXX_IRQ0) { - val = in_be32(&intr->ctrl); - val |= 1 << 11; - out_be32(&intr->ctrl, val); - } else if (irq < MPC5XXX_IRQ1) { - BUG(); - } else if (irq <= MPC5XXX_IRQ3) { - val = in_be32(&intr->ctrl); - val |= 1 << (10 - (irq - MPC5XXX_IRQ1)); - out_be32(&intr->ctrl, val); - } else if (irq < MPC5XXX_SDMA_IRQ_BASE) { - val = in_be32(&intr->main_mask); - val &= ~(1 << (16 - (irq - MPC5XXX_MAIN_IRQ_BASE))); - out_be32(&intr->main_mask, val); - } else if (irq < MPC5XXX_PERP_IRQ_BASE) { - val = in_be32(&sdma->IntMask); - val &= ~(1 << (irq - MPC5XXX_SDMA_IRQ_BASE)); - out_be32(&sdma->IntMask, val); - } else { - val = in_be32(&intr->per_mask); - val &= ~(1 << (31 - (irq - MPC5XXX_PERP_IRQ_BASE))); - out_be32(&intr->per_mask, val); - } -} - -static void mpc5xxx_ic_ack(unsigned int irq) -{ - u32 val; - - /* - * Only some irqs are reset here, others in interrupting hardware. - */ - - switch (irq) { - case MPC5XXX_IRQ0: - val = in_be32(&intr->ctrl); - val |= 0x08000000; - out_be32(&intr->ctrl, val); - break; - case MPC5XXX_CCS_IRQ: - val = in_be32(&intr->enc_status); - val |= 0x00000400; - out_be32(&intr->enc_status, val); - break; - case MPC5XXX_IRQ1: - val = in_be32(&intr->ctrl); - val |= 0x04000000; - out_be32(&intr->ctrl, val); - break; - case MPC5XXX_IRQ2: - val = in_be32(&intr->ctrl); - val |= 0x02000000; - out_be32(&intr->ctrl, val); - break; - case MPC5XXX_IRQ3: - val = in_be32(&intr->ctrl); - val |= 0x01000000; - out_be32(&intr->ctrl, val); - break; - default: - if (irq >= MPC5XXX_SDMA_IRQ_BASE - && irq < (MPC5XXX_SDMA_IRQ_BASE + MPC5XXX_SDMA_IRQ_NUM)) { - out_be32(&sdma->IntPend, - 1 << (irq - MPC5XXX_SDMA_IRQ_BASE)); - } - break; - } -} - -static void mpc5xxx_ic_disable_and_ack(unsigned int irq) -{ - mpc5xxx_ic_disable(irq); - mpc5xxx_ic_ack(irq); -} - -static void mpc5xxx_ic_end(unsigned int irq) -{ - mpc5xxx_ic_enable(irq); -} - -void mpc5xxx_init_irq(void) -{ - u32 intr_ctrl; - - /* Remap the necessary zones */ - intr = (struct mpc5xxx_intr *)(MPC5XXX_ICTL); - sdma = (struct mpc5xxx_sdma *)(MPC5XXX_SDMA); - - /* Disable all interrupt sources. */ - out_be32(&sdma->IntPend, 0xffffffff); /* 1 means clear pending */ - out_be32(&sdma->IntMask, 0xffffffff); /* 1 means disabled */ - out_be32(&intr->per_mask, 0x7ffffc00); /* 1 means disabled */ - out_be32(&intr->main_mask, 0x00010fff); /* 1 means disabled */ - intr_ctrl = in_be32(&intr->ctrl); - intr_ctrl |= 0x0f000000 | /* clear IRQ 0-3 */ - 0x00ff0000 | /* IRQ 0-3 level sensitive low active */ - 0x00001000 | /* MEE master external enable */ - 0x00000000 | /* 0 means disable IRQ 0-3 */ - 0x00000001; /* CEb route critical normally */ - out_be32(&intr->ctrl, intr_ctrl); - - /* Zero a bunch of the priority settings. */ - out_be32(&intr->per_pri1, 0); - out_be32(&intr->per_pri2, 0); - out_be32(&intr->per_pri3, 0); - out_be32(&intr->main_pri1, 0); - out_be32(&intr->main_pri2, 0); -} - -int mpc5xxx_get_irq(struct pt_regs *regs) -{ - u32 status; - int irq = -1; - - status = in_be32(&intr->enc_status); - - if (status & 0x00000400) { /* critical */ - irq = (status >> 8) & 0x3; - if (irq == 2) /* high priority peripheral */ - goto peripheral; - irq += MPC5XXX_CRIT_IRQ_BASE; - } else if (status & 0x00200000) { /* main */ - irq = (status >> 16) & 0x1f; - if (irq == 4) /* low priority peripheral */ - goto peripheral; - irq += MPC5XXX_MAIN_IRQ_BASE; - } else if (status & 0x20000000) { /* peripheral */ - peripheral: - irq = (status >> 24) & 0x1f; - if (irq == 0) { /* bestcomm */ - status = in_be32(&sdma->IntPend); - irq = ffs(status) + MPC5XXX_SDMA_IRQ_BASE - 1; - } else - irq += MPC5XXX_PERP_IRQ_BASE; - } - - return irq; -} - -/****************************************************************************/ - -int interrupt_init_cpu(ulong * decrementer_count) -{ - *decrementer_count = get_tbclk() / CONFIG_SYS_HZ; - - mpc5xxx_init_irq(); - - return (0); -} - -/****************************************************************************/ - -/* - * Handle external interrupts - */ -void external_interrupt(struct pt_regs *regs) -{ - int irq, unmask = 1; - - irq = mpc5xxx_get_irq(regs); - - mpc5xxx_ic_disable_and_ack(irq); - - enable_interrupts(); - - if (irq_handlers[irq].handler != NULL) - (*irq_handlers[irq].handler) (irq_handlers[irq].arg); - else { - printf("\nBogus External Interrupt IRQ %d\n", irq); - /* - * turn off the bogus interrupt, otherwise it - * might repeat forever - */ - unmask = 0; - } - - if (unmask) - mpc5xxx_ic_end(irq); -} - -void timer_interrupt_cpu(struct pt_regs *regs) -{ - /* 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); - - irq_handlers[irq].handler = handler; - irq_handlers[irq].arg = arg; - - mpc5xxx_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; - } - - mpc5xxx_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, re_enable; - u32 intr_ctrl; - char *irq_config[] = { "level sensitive, active high", - "edge sensitive, rising active edge", - "edge sensitive, falling active edge", - "level sensitive, active low" - }; - - re_enable = disable_interrupts(); - - intr_ctrl = in_be32(&intr->ctrl); - printf("Interrupt configuration:\n"); - - for (irq = 0; irq <= 3; irq++) { - printf("IRQ%d: %s\n", irq, - irq_config[(intr_ctrl >> (22 - 2 * irq)) & 0x3]); - } - - 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, - (ulong) irq_handlers[irq].handler, - (ulong) irq_handlers[irq].arg, - irq_handlers[irq].count); - - if (re_enable) - enable_interrupts(); -} -#endif |