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26dd3e4ff9
Historically a lot of these existed because we did not have a distinction between what was modular code and what was providing support to modules via EXPORT_SYMBOL and friends. That changed when we forked out support for the latter into the export.h file. This means we should be able to reduce the usage of module.h in code that is obj-y Makefile or bool Kconfig. In the case of some code where it is modular, we can extend that to also include files that are building basic support functionality but not related to loading or registering the final module; such files also have no need whatsoever for module.h The advantage in removing such instances is that module.h itself sources about 15 other headers; adding significantly to what we feed cpp, and it can obscure what headers we are effectively using. Since module.h might have been the implicit source for init.h (for __init) and for export.h (for EXPORT_SYMBOL) we consider each instance for the presence of either and replace/add as needed. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. Build coverage of all the mips defconfigs revealed the module.h header was masking a couple of implicit include instances, so we add the appropriate headers there. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: David Daney <david.daney@cavium.com> Cc: John Crispin <john@phrozen.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: "Steven J. Hill" <steven.hill@cavium.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/15131/ [james.hogan@imgtec.com: Preserve sort order where it already exists] Signed-off-by: James Hogan <james.hogan@imgtec.com>
124 lines
3 KiB
C
124 lines
3 KiB
C
/*
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* Interrupt handing routines for NEC VR4100 series.
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*
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* Copyright (C) 2005-2007 Yoichi Yuasa <yuasa@linux-mips.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/export.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <asm/irq_cpu.h>
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#include <asm/vr41xx/irq.h>
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typedef struct irq_cascade {
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int (*get_irq)(unsigned int);
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} irq_cascade_t;
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static irq_cascade_t irq_cascade[NR_IRQS] __cacheline_aligned;
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static struct irqaction cascade_irqaction = {
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.handler = no_action,
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.name = "cascade",
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.flags = IRQF_NO_THREAD,
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};
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int cascade_irq(unsigned int irq, int (*get_irq)(unsigned int))
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{
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int retval = 0;
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if (irq >= NR_IRQS)
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return -EINVAL;
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if (irq_cascade[irq].get_irq != NULL)
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free_irq(irq, NULL);
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irq_cascade[irq].get_irq = get_irq;
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if (get_irq != NULL) {
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retval = setup_irq(irq, &cascade_irqaction);
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if (retval < 0)
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irq_cascade[irq].get_irq = NULL;
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}
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return retval;
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}
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EXPORT_SYMBOL_GPL(cascade_irq);
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static void irq_dispatch(unsigned int irq)
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{
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irq_cascade_t *cascade;
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if (irq >= NR_IRQS) {
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atomic_inc(&irq_err_count);
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return;
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}
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cascade = irq_cascade + irq;
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if (cascade->get_irq != NULL) {
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struct irq_desc *desc = irq_to_desc(irq);
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struct irq_data *idata = irq_desc_get_irq_data(desc);
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struct irq_chip *chip = irq_desc_get_chip(desc);
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int ret;
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if (chip->irq_mask_ack)
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chip->irq_mask_ack(idata);
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else {
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chip->irq_mask(idata);
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chip->irq_ack(idata);
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}
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ret = cascade->get_irq(irq);
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irq = ret;
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if (ret < 0)
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atomic_inc(&irq_err_count);
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else
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irq_dispatch(irq);
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if (!irqd_irq_disabled(idata) && chip->irq_unmask)
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chip->irq_unmask(idata);
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} else
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do_IRQ(irq);
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}
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asmlinkage void plat_irq_dispatch(void)
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{
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unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM;
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if (pending & CAUSEF_IP7)
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do_IRQ(TIMER_IRQ);
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else if (pending & 0x7800) {
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if (pending & CAUSEF_IP3)
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irq_dispatch(INT1_IRQ);
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else if (pending & CAUSEF_IP4)
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irq_dispatch(INT2_IRQ);
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else if (pending & CAUSEF_IP5)
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irq_dispatch(INT3_IRQ);
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else if (pending & CAUSEF_IP6)
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irq_dispatch(INT4_IRQ);
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} else if (pending & CAUSEF_IP2)
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irq_dispatch(INT0_IRQ);
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else if (pending & CAUSEF_IP0)
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do_IRQ(MIPS_SOFTINT0_IRQ);
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else if (pending & CAUSEF_IP1)
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do_IRQ(MIPS_SOFTINT1_IRQ);
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else
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spurious_interrupt();
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}
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void __init arch_init_irq(void)
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{
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mips_cpu_irq_init();
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}
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