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@@ -4,25 +4,6 @@
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* This file is subject to the terms and conditions of the GNU General Public
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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* License. See the file COPYING in the main directory of this archive
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* for more details.
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* for more details.
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- *
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- * 07/03/96: Timer initialization, and thus mach_sched_init(),
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- * removed from request_irq() and moved to init_time().
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- * We should therefore consider renaming our add_isr() and
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- * remove_isr() to request_irq() and free_irq()
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- * respectively, so they are compliant with the other
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- * architectures. /Jes
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- * 11/07/96: Changed all add_/remove_isr() to request_/free_irq() calls.
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- * Removed irq list support, if any machine needs an irq server
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- * it must implement this itself (as it's already done), instead
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- * only default handler are used with mach_default_handler.
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- * request_irq got some flags different from other architectures:
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- * - IRQ_FLG_REPLACE : Replace an existing handler (the default one
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- * can be replaced without this flag)
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- * - IRQ_FLG_LOCK : handler can't be replaced
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- * There are other machine depending flags, see there
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- * If you want to replace a default handler you should know what
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- * you're doing, since it might handle different other irq sources
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- * which must be served /Roman Zippel
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*/
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*/
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#include <linux/module.h>
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#include <linux/module.h>
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@@ -47,33 +28,22 @@
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#endif
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#endif
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extern u32 auto_irqhandler_fixup[];
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extern u32 auto_irqhandler_fixup[];
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-extern u32 user_irqhandler_fixup[];
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extern u16 user_irqvec_fixup[];
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extern u16 user_irqvec_fixup[];
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-/* table for system interrupt handlers */
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-static struct irq_node *irq_list[NR_IRQS];
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-static struct irq_controller *irq_controller[NR_IRQS];
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-static int irq_depth[NR_IRQS];
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-
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static int m68k_first_user_vec;
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static int m68k_first_user_vec;
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-static struct irq_controller auto_irq_controller = {
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+static struct irq_chip auto_irq_chip = {
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.name = "auto",
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.name = "auto",
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- .lock = __SPIN_LOCK_UNLOCKED(auto_irq_controller.lock),
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- .startup = m68k_irq_startup,
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- .shutdown = m68k_irq_shutdown,
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+ .irq_startup = m68k_irq_startup,
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+ .irq_shutdown = m68k_irq_shutdown,
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};
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};
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-static struct irq_controller user_irq_controller = {
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+static struct irq_chip user_irq_chip = {
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.name = "user",
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.name = "user",
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- .lock = __SPIN_LOCK_UNLOCKED(user_irq_controller.lock),
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- .startup = m68k_irq_startup,
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- .shutdown = m68k_irq_shutdown,
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+ .irq_startup = m68k_irq_startup,
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+ .irq_shutdown = m68k_irq_shutdown,
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};
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};
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-#define NUM_IRQ_NODES 100
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-static irq_node_t nodes[NUM_IRQ_NODES];
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-
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/*
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/*
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* void init_IRQ(void)
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* void init_IRQ(void)
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*
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*
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@@ -96,7 +66,7 @@ void __init init_IRQ(void)
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}
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}
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for (i = IRQ_AUTO_1; i <= IRQ_AUTO_7; i++)
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for (i = IRQ_AUTO_1; i <= IRQ_AUTO_7; i++)
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- irq_controller[i] = &auto_irq_controller;
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+ irq_set_chip_and_handler(i, &auto_irq_chip, handle_simple_irq);
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mach_init_IRQ();
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mach_init_IRQ();
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}
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}
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@@ -106,7 +76,7 @@ void __init init_IRQ(void)
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* @handler: called from auto vector interrupts
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* @handler: called from auto vector interrupts
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*
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*
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* setup the handler to be called from auto vector interrupts instead of the
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* setup the handler to be called from auto vector interrupts instead of the
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- * standard __m68k_handle_int(), it will be called with irq numbers in the range
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+ * standard do_IRQ(), it will be called with irq numbers in the range
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* from IRQ_AUTO_1 - IRQ_AUTO_7.
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* from IRQ_AUTO_1 - IRQ_AUTO_7.
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*/
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*/
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void __init m68k_setup_auto_interrupt(void (*handler)(unsigned int, struct pt_regs *))
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void __init m68k_setup_auto_interrupt(void (*handler)(unsigned int, struct pt_regs *))
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@@ -120,217 +90,49 @@ void __init m68k_setup_auto_interrupt(void (*handler)(unsigned int, struct pt_re
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* m68k_setup_user_interrupt
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* m68k_setup_user_interrupt
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* @vec: first user vector interrupt to handle
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* @vec: first user vector interrupt to handle
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* @cnt: number of active user vector interrupts
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* @cnt: number of active user vector interrupts
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- * @handler: called from user vector interrupts
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*
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*
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* setup user vector interrupts, this includes activating the specified range
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* setup user vector interrupts, this includes activating the specified range
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* of interrupts, only then these interrupts can be requested (note: this is
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* of interrupts, only then these interrupts can be requested (note: this is
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- * different from auto vector interrupts). An optional handler can be installed
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- * to be called instead of the default __m68k_handle_int(), it will be called
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- * with irq numbers starting from IRQ_USER.
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+ * different from auto vector interrupts).
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*/
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*/
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-void __init m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt,
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- void (*handler)(unsigned int, struct pt_regs *))
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+void __init m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt)
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{
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{
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int i;
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int i;
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BUG_ON(IRQ_USER + cnt > NR_IRQS);
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BUG_ON(IRQ_USER + cnt > NR_IRQS);
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m68k_first_user_vec = vec;
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m68k_first_user_vec = vec;
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for (i = 0; i < cnt; i++)
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for (i = 0; i < cnt; i++)
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- irq_controller[IRQ_USER + i] = &user_irq_controller;
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+ irq_set_chip(IRQ_USER + i, &user_irq_chip);
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*user_irqvec_fixup = vec - IRQ_USER;
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*user_irqvec_fixup = vec - IRQ_USER;
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- if (handler)
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- *user_irqhandler_fixup = (u32)handler;
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flush_icache();
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flush_icache();
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}
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}
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/**
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/**
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* m68k_setup_irq_controller
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* m68k_setup_irq_controller
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- * @contr: irq controller which controls specified irq
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+ * @chip: irq chip which controls specified irq
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+ * @handle: flow handler which handles specified irq
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* @irq: first irq to be managed by the controller
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* @irq: first irq to be managed by the controller
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+ * @cnt: number of irqs to be managed by the controller
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*
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*
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* Change the controller for the specified range of irq, which will be used to
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* Change the controller for the specified range of irq, which will be used to
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* manage these irq. auto/user irq already have a default controller, which can
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* manage these irq. auto/user irq already have a default controller, which can
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* be changed as well, but the controller probably should use m68k_irq_startup/
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* be changed as well, but the controller probably should use m68k_irq_startup/
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* m68k_irq_shutdown.
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* m68k_irq_shutdown.
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*/
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*/
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-void m68k_setup_irq_controller(struct irq_controller *contr, unsigned int irq,
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+void m68k_setup_irq_controller(struct irq_chip *chip,
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+ irq_flow_handler_t handle, unsigned int irq,
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unsigned int cnt)
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unsigned int cnt)
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{
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{
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int i;
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int i;
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- for (i = 0; i < cnt; i++)
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- irq_controller[irq + i] = contr;
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-}
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-
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-irq_node_t *new_irq_node(void)
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-{
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- irq_node_t *node;
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- short i;
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-
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- for (node = nodes, i = NUM_IRQ_NODES-1; i >= 0; node++, i--) {
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- if (!node->handler) {
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- memset(node, 0, sizeof(*node));
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- return node;
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- }
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+ for (i = 0; i < cnt; i++) {
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+ irq_set_chip(irq + i, chip);
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+ if (handle)
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+ irq_set_handler(irq + i, handle);
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}
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}
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-
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- printk ("new_irq_node: out of nodes\n");
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- return NULL;
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}
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}
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-int setup_irq(unsigned int irq, struct irq_node *node)
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-{
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- struct irq_controller *contr;
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- struct irq_node **prev;
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- unsigned long flags;
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-
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- if (irq >= NR_IRQS || !(contr = irq_controller[irq])) {
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- printk("%s: Incorrect IRQ %d from %s\n",
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- __func__, irq, node->devname);
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- return -ENXIO;
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- }
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-
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- spin_lock_irqsave(&contr->lock, flags);
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-
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- prev = irq_list + irq;
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- if (*prev) {
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- /* Can't share interrupts unless both agree to */
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- if (!((*prev)->flags & node->flags & IRQF_SHARED)) {
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- spin_unlock_irqrestore(&contr->lock, flags);
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- return -EBUSY;
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- }
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- while (*prev)
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- prev = &(*prev)->next;
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- }
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-
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- if (!irq_list[irq]) {
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- if (contr->startup)
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- contr->startup(irq);
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- else
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- contr->enable(irq);
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- }
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- node->next = NULL;
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- *prev = node;
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-
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- spin_unlock_irqrestore(&contr->lock, flags);
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-
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- return 0;
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-}
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-
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-int request_irq(unsigned int irq,
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- irq_handler_t handler,
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- unsigned long flags, const char *devname, void *dev_id)
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-{
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- struct irq_node *node;
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- int res;
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-
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- node = new_irq_node();
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- if (!node)
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- return -ENOMEM;
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-
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- node->handler = handler;
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- node->flags = flags;
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- node->dev_id = dev_id;
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- node->devname = devname;
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-
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- res = setup_irq(irq, node);
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- if (res)
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- node->handler = NULL;
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-
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- return res;
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-}
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-
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-EXPORT_SYMBOL(request_irq);
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-
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-void free_irq(unsigned int irq, void *dev_id)
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-{
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- struct irq_controller *contr;
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- struct irq_node **p, *node;
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- unsigned long flags;
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-
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- if (irq >= NR_IRQS || !(contr = irq_controller[irq])) {
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- printk("%s: Incorrect IRQ %d\n", __func__, irq);
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- return;
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- }
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-
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- spin_lock_irqsave(&contr->lock, flags);
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-
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- p = irq_list + irq;
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- while ((node = *p)) {
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- if (node->dev_id == dev_id)
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- break;
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- p = &node->next;
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- }
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-
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- if (node) {
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- *p = node->next;
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- node->handler = NULL;
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- } else
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- printk("%s: Removing probably wrong IRQ %d\n",
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- __func__, irq);
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-
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- if (!irq_list[irq]) {
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- if (contr->shutdown)
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- contr->shutdown(irq);
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- else
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- contr->disable(irq);
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- }
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-
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- spin_unlock_irqrestore(&contr->lock, flags);
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-}
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-
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-EXPORT_SYMBOL(free_irq);
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-
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-void enable_irq(unsigned int irq)
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-{
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- struct irq_controller *contr;
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- unsigned long flags;
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-
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- if (irq >= NR_IRQS || !(contr = irq_controller[irq])) {
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- printk("%s: Incorrect IRQ %d\n",
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- __func__, irq);
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- return;
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- }
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-
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- spin_lock_irqsave(&contr->lock, flags);
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- if (irq_depth[irq]) {
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- if (!--irq_depth[irq]) {
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- if (contr->enable)
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- contr->enable(irq);
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- }
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- } else
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- WARN_ON(1);
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- spin_unlock_irqrestore(&contr->lock, flags);
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-}
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-
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-EXPORT_SYMBOL(enable_irq);
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-
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-void disable_irq(unsigned int irq)
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-{
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- struct irq_controller *contr;
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- unsigned long flags;
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-
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- if (irq >= NR_IRQS || !(contr = irq_controller[irq])) {
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- printk("%s: Incorrect IRQ %d\n",
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- __func__, irq);
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- return;
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- }
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-
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- spin_lock_irqsave(&contr->lock, flags);
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- if (!irq_depth[irq]++) {
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- if (contr->disable)
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- contr->disable(irq);
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- }
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- spin_unlock_irqrestore(&contr->lock, flags);
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-}
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-
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-EXPORT_SYMBOL(disable_irq);
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-
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-void disable_irq_nosync(unsigned int irq) __attribute__((alias("disable_irq")));
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-
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-EXPORT_SYMBOL(disable_irq_nosync);
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-
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-int m68k_irq_startup(unsigned int irq)
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+unsigned int m68k_irq_startup_irq(unsigned int irq)
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{
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{
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if (irq <= IRQ_AUTO_7)
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if (irq <= IRQ_AUTO_7)
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vectors[VEC_SPUR + irq] = auto_inthandler;
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vectors[VEC_SPUR + irq] = auto_inthandler;
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@@ -339,41 +141,21 @@ int m68k_irq_startup(unsigned int irq)
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return 0;
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return 0;
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}
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}
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-void m68k_irq_shutdown(unsigned int irq)
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+unsigned int m68k_irq_startup(struct irq_data *data)
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{
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{
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- if (irq <= IRQ_AUTO_7)
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- vectors[VEC_SPUR + irq] = bad_inthandler;
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- else
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- vectors[m68k_first_user_vec + irq - IRQ_USER] = bad_inthandler;
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+ return m68k_irq_startup_irq(data->irq);
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}
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}
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-
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-/*
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- * Do we need these probe functions on the m68k?
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- *
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- * ... may be useful with ISA devices
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- */
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-unsigned long probe_irq_on (void)
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+void m68k_irq_shutdown(struct irq_data *data)
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{
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{
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-#ifdef CONFIG_Q40
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- if (MACH_IS_Q40)
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- return q40_probe_irq_on();
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-#endif
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- return 0;
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-}
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+ unsigned int irq = data->irq;
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-EXPORT_SYMBOL(probe_irq_on);
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-
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-int probe_irq_off (unsigned long irqs)
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|
-{
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|
|
|
-#ifdef CONFIG_Q40
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|
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- if (MACH_IS_Q40)
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|
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- return q40_probe_irq_off(irqs);
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-#endif
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- return 0;
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|
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+ if (irq <= IRQ_AUTO_7)
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|
|
|
+ vectors[VEC_SPUR + irq] = bad_inthandler;
|
|
|
|
+ else
|
|
|
|
+ vectors[m68k_first_user_vec + irq - IRQ_USER] = bad_inthandler;
|
|
}
|
|
}
|
|
|
|
|
|
-EXPORT_SYMBOL(probe_irq_off);
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|
|
|
|
|
|
|
unsigned int irq_canonicalize(unsigned int irq)
|
|
unsigned int irq_canonicalize(unsigned int irq)
|
|
{
|
|
{
|
|
@@ -386,52 +168,9 @@ unsigned int irq_canonicalize(unsigned int irq)
|
|
|
|
|
|
EXPORT_SYMBOL(irq_canonicalize);
|
|
EXPORT_SYMBOL(irq_canonicalize);
|
|
|
|
|
|
-asmlinkage void m68k_handle_int(unsigned int irq)
|
|
|
|
-{
|
|
|
|
- struct irq_node *node;
|
|
|
|
- kstat_cpu(0).irqs[irq]++;
|
|
|
|
- node = irq_list[irq];
|
|
|
|
- do {
|
|
|
|
- node->handler(irq, node->dev_id);
|
|
|
|
- node = node->next;
|
|
|
|
- } while (node);
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-asmlinkage void __m68k_handle_int(unsigned int irq, struct pt_regs *regs)
|
|
|
|
-{
|
|
|
|
- struct pt_regs *old_regs;
|
|
|
|
- old_regs = set_irq_regs(regs);
|
|
|
|
- m68k_handle_int(irq);
|
|
|
|
- set_irq_regs(old_regs);
|
|
|
|
-}
|
|
|
|
|
|
|
|
asmlinkage void handle_badint(struct pt_regs *regs)
|
|
asmlinkage void handle_badint(struct pt_regs *regs)
|
|
{
|
|
{
|
|
- kstat_cpu(0).irqs[0]++;
|
|
|
|
- printk("unexpected interrupt from %u\n", regs->vector);
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-int show_interrupts(struct seq_file *p, void *v)
|
|
|
|
-{
|
|
|
|
- struct irq_controller *contr;
|
|
|
|
- struct irq_node *node;
|
|
|
|
- int i = *(loff_t *) v;
|
|
|
|
-
|
|
|
|
- /* autovector interrupts */
|
|
|
|
- if (irq_list[i]) {
|
|
|
|
- contr = irq_controller[i];
|
|
|
|
- node = irq_list[i];
|
|
|
|
- seq_printf(p, "%-8s %3u: %10u %s", contr->name, i, kstat_cpu(0).irqs[i], node->devname);
|
|
|
|
- while ((node = node->next))
|
|
|
|
- seq_printf(p, ", %s", node->devname);
|
|
|
|
- seq_puts(p, "\n");
|
|
|
|
- }
|
|
|
|
- return 0;
|
|
|
|
-}
|
|
|
|
-
|
|
|
|
-#ifdef CONFIG_PROC_FS
|
|
|
|
-void init_irq_proc(void)
|
|
|
|
-{
|
|
|
|
- /* Insert /proc/irq driver here */
|
|
|
|
|
|
+ atomic_inc(&irq_err_count);
|
|
|
|
+ pr_warn("unexpected interrupt from %u\n", regs->vector);
|
|
}
|
|
}
|
|
-#endif
|
|
|