+++ /dev/null
-/*
- * (C) Copyright 2000-2002
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * (C) Copyright 2002 (440 port)
- * Scott McNutt, Artesyn Communication Producs, smcnutt@artsyncp.com
- *
- * (C) Copyright 2003 (440GX port)
- * Travis B. Sawyer, Sandburst Corporation, tsawyer@sandburst.com
- *
- * (C) Copyright 2008 (PPC440X05 port for Virtex 5 FX)
- * Ricardo Ribalda-Universidad Autonoma de Madrid-ricardo.ribalda@uam.es
- * Work supported by Qtechnology (htpp://qtec.com)
- *
- * 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 <common.h>
-#include <watchdog.h>
-#include <command.h>
-#include <asm/processor.h>
-#include <asm/interrupt.h>
-#include <ppc4xx.h>
-#include <ppc_asm.tmpl>
-#include <commproc.h>
-
-#if (UIC_MAX > 3)
-#define UICB0_ALL (UIC_MASK(VECNUM_UIC1CI) | UIC_MASK(VECNUM_UIC1NCI) | \
- UIC_MASK(VECNUM_UIC2CI) | UIC_MASK(VECNUM_UIC2NCI) | \
- UIC_MASK(VECNUM_UIC3CI) | UIC_MASK(VECNUM_UIC3NCI))
-#elif (UIC_MAX > 2)
-#define UICB0_ALL (UIC_MASK(VECNUM_UIC1CI) | UIC_MASK(VECNUM_UIC1NCI) | \
- UIC_MASK(VECNUM_UIC2CI) | UIC_MASK(VECNUM_UIC2NCI))
-#elif (UIC_MAX > 1)
-#define UICB0_ALL (UIC_MASK(VECNUM_UIC1CI) | UIC_MASK(VECNUM_UIC1NCI))
-#else
-#define UICB0_ALL 0
-#endif
-
-u32 get_dcr(u16);
-
-DECLARE_GLOBAL_DATA_PTR;
-
-void pic_enable(void)
-{
-#if (UIC_MAX > 1)
- /* Install the UIC1 handlers */
- irq_install_handler(VECNUM_UIC1NCI, (void *)(void *)external_interrupt, 0);
- irq_install_handler(VECNUM_UIC1CI, (void *)(void *)external_interrupt, 0);
-#endif
-#if (UIC_MAX > 2)
- irq_install_handler(VECNUM_UIC2NCI, (void *)(void *)external_interrupt, 0);
- irq_install_handler(VECNUM_UIC2CI, (void *)(void *)external_interrupt, 0);
-#endif
-#if (UIC_MAX > 3)
- irq_install_handler(VECNUM_UIC3NCI, (void *)(void *)external_interrupt, 0);
- irq_install_handler(VECNUM_UIC3CI, (void *)(void *)external_interrupt, 0);
-#endif
-}
-
-/* Handler for UIC interrupt */
-static void uic_interrupt(u32 uic_base, int vec_base)
-{
- u32 uic_msr;
- u32 msr_shift;
- int vec;
-
- /*
- * Read masked interrupt status register to determine interrupt source
- */
- uic_msr = get_dcr(uic_base + UIC_MSR);
- msr_shift = uic_msr;
- vec = vec_base;
-
- while (msr_shift != 0) {
- if (msr_shift & 0x80000000)
- interrupt_run_handler(vec);
- /*
- * Shift msr to next position and increment vector
- */
- msr_shift <<= 1;
- vec++;
- }
-}
-
-/*
- * Handle external interrupts
- */
-void external_interrupt(struct pt_regs *regs)
-{
- u32 uic_msr;
-
- /*
- * Read masked interrupt status register to determine interrupt source
- */
- uic_msr = mfdcr(UIC0MSR);
-
-#if (UIC_MAX > 1)
- if ((UIC_MASK(VECNUM_UIC1CI) & uic_msr) ||
- (UIC_MASK(VECNUM_UIC1NCI) & uic_msr))
- uic_interrupt(UIC1_DCR_BASE, 32);
-#endif
-
-#if (UIC_MAX > 2)
- if ((UIC_MASK(VECNUM_UIC2CI) & uic_msr) ||
- (UIC_MASK(VECNUM_UIC2NCI) & uic_msr))
- uic_interrupt(UIC2_DCR_BASE, 64);
-#endif
-
-#if (UIC_MAX > 3)
- if ((UIC_MASK(VECNUM_UIC3CI) & uic_msr) ||
- (UIC_MASK(VECNUM_UIC3NCI) & uic_msr))
- uic_interrupt(UIC3_DCR_BASE, 96);
-#endif
-
- mtdcr(UIC0SR, (uic_msr & UICB0_ALL));
-
- if (uic_msr & ~(UICB0_ALL))
- uic_interrupt(UIC0_DCR_BASE, 0);
-
- return;
-}
-
-void pic_irq_ack(unsigned int vec)
-{
- if ((vec >= 0) && (vec < 32))
- mtdcr(UIC0SR, UIC_MASK(vec));
- else if ((vec >= 32) && (vec < 64))
- mtdcr(UIC1SR, UIC_MASK(vec));
- else if ((vec >= 64) && (vec < 96))
- mtdcr(UIC2SR, UIC_MASK(vec));
- else if (vec >= 96)
- mtdcr(UIC3SR, UIC_MASK(vec));
-}
-
-/*
- * Install and free a interrupt handler.
- */
-void pic_irq_enable(unsigned int vec)
-{
-
- if ((vec >= 0) && (vec < 32))
- mtdcr(UIC0ER, mfdcr(UIC0ER) | UIC_MASK(vec));
- else if ((vec >= 32) && (vec < 64))
- mtdcr(UIC1ER, mfdcr(UIC1ER) | UIC_MASK(vec));
- else if ((vec >= 64) && (vec < 96))
- mtdcr(UIC2ER, mfdcr(UIC2ER) | UIC_MASK(vec));
- else if (vec >= 96)
- mtdcr(UIC3ER, mfdcr(UIC3ER) | UIC_MASK(vec));
-
- debug("Install interrupt vector %d\n", vec);
-}
-
-void pic_irq_disable(unsigned int vec)
-{
- if ((vec >= 0) && (vec < 32))
- mtdcr(UIC0ER, mfdcr(UIC0ER) & ~UIC_MASK(vec));
- else if ((vec >= 32) && (vec < 64))
- mtdcr(UIC1ER, mfdcr(UIC1ER) & ~UIC_MASK(vec));
- else if ((vec >= 64) && (vec < 96))
- mtdcr(UIC2ER, mfdcr(UIC2ER) & ~UIC_MASK(vec));
- else if (vec >= 96)
- mtdcr(UIC3ER, mfdcr(UIC3ER) & ~UIC_MASK(vec));
-}
projects / u-boot / blobdiff