fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-sparc64 / irq.h
blob182dba05c702634ec8758a070380d9f668257882
1 /* $Id: irq.h,v 1.21 2002/01/23 11:27:36 davem Exp $
2 * irq.h: IRQ registers on the 64-bit Sparc.
4 * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
5 * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
6 */
8 #ifndef _SPARC64_IRQ_H
9 #define _SPARC64_IRQ_H
11 #include <linux/linkage.h>
12 #include <linux/kernel.h>
13 #include <linux/errno.h>
14 #include <linux/interrupt.h>
15 #include <asm/pil.h>
16 #include <asm/ptrace.h>
18 /* IMAP/ICLR register defines */
19 #define IMAP_VALID 0x80000000UL /* IRQ Enabled */
20 #define IMAP_TID_UPA 0x7c000000UL /* UPA TargetID */
21 #define IMAP_TID_JBUS 0x7c000000UL /* JBUS TargetID */
22 #define IMAP_TID_SHIFT 26
23 #define IMAP_AID_SAFARI 0x7c000000UL /* Safari AgentID */
24 #define IMAP_AID_SHIFT 26
25 #define IMAP_NID_SAFARI 0x03e00000UL /* Safari NodeID */
26 #define IMAP_NID_SHIFT 21
27 #define IMAP_IGN 0x000007c0UL /* IRQ Group Number */
28 #define IMAP_INO 0x0000003fUL /* IRQ Number */
29 #define IMAP_INR 0x000007ffUL /* Full interrupt number*/
31 #define ICLR_IDLE 0x00000000UL /* Idle state */
32 #define ICLR_TRANSMIT 0x00000001UL /* Transmit state */
33 #define ICLR_PENDING 0x00000003UL /* Pending state */
35 /* The largest number of unique interrupt sources we support.
36 * If this needs to ever be larger than 255, you need to change
37 * the type of ino_bucket->virt_irq as appropriate.
39 * ino_bucket->virt_irq allocation is made during {sun4v_,}build_irq().
41 #define NR_IRQS 255
43 extern void irq_install_pre_handler(int virt_irq,
44 void (*func)(unsigned int, void *, void *),
45 void *arg1, void *arg2);
46 #define irq_canonicalize(irq) (irq)
47 extern unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap);
48 extern unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino);
49 extern unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino);
50 extern unsigned int sun4v_build_msi(u32 devhandle, unsigned int *virt_irq_p,
51 unsigned int msi_devino_start,
52 unsigned int msi_devino_end);
53 extern void sun4v_destroy_msi(unsigned int virt_irq);
54 extern unsigned int sun4u_build_msi(u32 portid, unsigned int *virt_irq_p,
55 unsigned int msi_devino_start,
56 unsigned int msi_devino_end,
57 unsigned long imap_base,
58 unsigned long iclr_base);
59 extern void sun4u_destroy_msi(unsigned int virt_irq);
60 extern unsigned int sbus_build_irq(void *sbus, unsigned int ino);
62 extern unsigned char virt_irq_alloc(unsigned int dev_handle,
63 unsigned int dev_ino);
64 #ifdef CONFIG_PCI_MSI
65 extern void virt_irq_free(unsigned int virt_irq);
66 #endif
68 extern void fixup_irqs(void);
70 static __inline__ void set_softint(unsigned long bits)
72 __asm__ __volatile__("wr %0, 0x0, %%set_softint"
73 : /* No outputs */
74 : "r" (bits));
77 static __inline__ void clear_softint(unsigned long bits)
79 __asm__ __volatile__("wr %0, 0x0, %%clear_softint"
80 : /* No outputs */
81 : "r" (bits));
84 static __inline__ unsigned long get_softint(void)
86 unsigned long retval;
88 __asm__ __volatile__("rd %%softint, %0"
89 : "=r" (retval));
90 return retval;
93 #endif