ia64/linux-2.6.18-xen.hg

view include/asm-m68k/irq.h @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents 831230e53067
children
line source
1 #ifndef _M68K_IRQ_H_
2 #define _M68K_IRQ_H_
4 #include <linux/linkage.h>
5 #include <linux/hardirq.h>
6 #include <linux/spinlock_types.h>
8 /*
9 * This should be the same as the max(NUM_X_SOURCES) for all the
10 * different m68k hosts compiled into the kernel.
11 * Currently the Atari has 72 and the Amiga 24, but if both are
12 * supported in the kernel it is better to make room for 72.
13 */
14 #if defined(CONFIG_VME) || defined(CONFIG_SUN3) || defined(CONFIG_SUN3X)
15 #define NR_IRQS 200
16 #elif defined(CONFIG_ATARI) || defined(CONFIG_MAC)
17 #define NR_IRQS 72
18 #elif defined(CONFIG_Q40)
19 #define NR_IRQS 43
20 #elif defined(CONFIG_AMIGA)
21 #define NR_IRQS 32
22 #elif defined(CONFIG_APOLLO)
23 #define NR_IRQS 24
24 #elif defined(CONFIG_HP300)
25 #define NR_IRQS 8
26 #else
27 #error unknown nr of irqs
28 #endif
30 /*
31 * The hardirq mask has to be large enough to have
32 * space for potentially all IRQ sources in the system
33 * nesting on a single CPU:
34 */
35 #if (1 << HARDIRQ_BITS) < NR_IRQS
36 # error HARDIRQ_BITS is too low!
37 #endif
39 /*
40 * Interrupt source definitions
41 * General interrupt sources are the level 1-7.
42 * Adding an interrupt service routine for one of these sources
43 * results in the addition of that routine to a chain of routines.
44 * Each one is called in succession. Each individual interrupt
45 * service routine should determine if the device associated with
46 * that routine requires service.
47 */
49 #define IRQ_SPURIOUS 0
51 #define IRQ_AUTO_1 1 /* level 1 interrupt */
52 #define IRQ_AUTO_2 2 /* level 2 interrupt */
53 #define IRQ_AUTO_3 3 /* level 3 interrupt */
54 #define IRQ_AUTO_4 4 /* level 4 interrupt */
55 #define IRQ_AUTO_5 5 /* level 5 interrupt */
56 #define IRQ_AUTO_6 6 /* level 6 interrupt */
57 #define IRQ_AUTO_7 7 /* level 7 interrupt (non-maskable) */
59 #define IRQ_USER 8
61 extern unsigned int irq_canonicalize(unsigned int irq);
62 extern void enable_irq(unsigned int);
63 extern void disable_irq(unsigned int);
64 #define disable_irq_nosync disable_irq
66 struct pt_regs;
68 /*
69 * various flags for request_irq() - the Amiga now uses the standard
70 * mechanism like all other architectures - IRQF_DISABLED and
71 * IRQF_SHARED are your friends.
72 */
73 #ifndef MACH_AMIGA_ONLY
74 #define IRQ_FLG_LOCK (0x0001) /* handler is not replaceable */
75 #define IRQ_FLG_REPLACE (0x0002) /* replace existing handler */
76 #define IRQ_FLG_FAST (0x0004)
77 #define IRQ_FLG_SLOW (0x0008)
78 #define IRQ_FLG_STD (0x8000) /* internally used */
79 #endif
81 /*
82 * This structure is used to chain together the ISRs for a particular
83 * interrupt source (if it supports chaining).
84 */
85 typedef struct irq_node {
86 int (*handler)(int, void *, struct pt_regs *);
87 void *dev_id;
88 struct irq_node *next;
89 unsigned long flags;
90 const char *devname;
91 } irq_node_t;
93 /*
94 * This structure has only 4 elements for speed reasons
95 */
96 typedef struct irq_handler {
97 int (*handler)(int, void *, struct pt_regs *);
98 unsigned long flags;
99 void *dev_id;
100 const char *devname;
101 } irq_handler_t;
103 struct irq_controller {
104 const char *name;
105 spinlock_t lock;
106 int (*startup)(unsigned int irq);
107 void (*shutdown)(unsigned int irq);
108 void (*enable)(unsigned int irq);
109 void (*disable)(unsigned int irq);
110 };
112 extern int m68k_irq_startup(unsigned int);
113 extern void m68k_irq_shutdown(unsigned int);
115 /*
116 * This function returns a new irq_node_t
117 */
118 extern irq_node_t *new_irq_node(void);
120 extern void m68k_setup_auto_interrupt(void (*handler)(unsigned int, struct pt_regs *));
121 extern void m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt,
122 void (*handler)(unsigned int, struct pt_regs *));
123 extern void m68k_setup_irq_controller(struct irq_controller *, unsigned int, unsigned int);
125 asmlinkage void m68k_handle_int(unsigned int, struct pt_regs *);
127 #endif /* _M68K_IRQ_H_ */