Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
[linux-2.6] / include / asm-sparc64 / irq.h
1 /* irq.h: IRQ registers on the 64-bit Sparc.
2  *
3  * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
4  * Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
5  */
6
7 #ifndef _SPARC64_IRQ_H
8 #define _SPARC64_IRQ_H
9
10 #include <linux/linkage.h>
11 #include <linux/kernel.h>
12 #include <linux/errno.h>
13 #include <linux/interrupt.h>
14 #include <asm/pil.h>
15 #include <asm/ptrace.h>
16
17 /* IMAP/ICLR register defines */
18 #define IMAP_VALID              0x80000000UL    /* IRQ Enabled          */
19 #define IMAP_TID_UPA            0x7c000000UL    /* UPA TargetID         */
20 #define IMAP_TID_JBUS           0x7c000000UL    /* JBUS TargetID        */
21 #define IMAP_TID_SHIFT          26
22 #define IMAP_AID_SAFARI         0x7c000000UL    /* Safari AgentID       */
23 #define IMAP_AID_SHIFT          26
24 #define IMAP_NID_SAFARI         0x03e00000UL    /* Safari NodeID        */
25 #define IMAP_NID_SHIFT          21
26 #define IMAP_IGN                0x000007c0UL    /* IRQ Group Number     */
27 #define IMAP_INO                0x0000003fUL    /* IRQ Number           */
28 #define IMAP_INR                0x000007ffUL    /* Full interrupt number*/
29
30 #define ICLR_IDLE               0x00000000UL    /* Idle state           */
31 #define ICLR_TRANSMIT           0x00000001UL    /* Transmit state       */
32 #define ICLR_PENDING            0x00000003UL    /* Pending state        */
33
34 /* The largest number of unique interrupt sources we support.
35  * If this needs to ever be larger than 255, you need to change
36  * the type of ino_bucket->virt_irq as appropriate.
37  *
38  * ino_bucket->virt_irq allocation is made during {sun4v_,}build_irq().
39  */
40 #define NR_IRQS    255
41
42 extern void irq_install_pre_handler(int virt_irq,
43                                     void (*func)(unsigned int, void *, void *),
44                                     void *arg1, void *arg2);
45 #define irq_canonicalize(irq)   (irq)
46 extern unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap);
47 extern unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino);
48 extern unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino);
49 extern unsigned int sun4v_build_msi(u32 devhandle, unsigned int *virt_irq_p,
50                                     unsigned int msi_devino_start,
51                                     unsigned int msi_devino_end);
52 extern void sun4v_destroy_msi(unsigned int virt_irq);
53 extern unsigned int sun4u_build_msi(u32 portid, unsigned int *virt_irq_p,
54                                     unsigned int msi_devino_start,
55                                     unsigned int msi_devino_end,
56                                     unsigned long imap_base,
57                                     unsigned long iclr_base);
58 extern void sun4u_destroy_msi(unsigned int virt_irq);
59 extern unsigned int sbus_build_irq(void *sbus, unsigned int ino);
60
61 extern unsigned char virt_irq_alloc(unsigned int dev_handle,
62                                     unsigned int dev_ino);
63 #ifdef CONFIG_PCI_MSI
64 extern void virt_irq_free(unsigned int virt_irq);
65 #endif
66
67 extern void fixup_irqs(void);
68
69 static inline void set_softint(unsigned long bits)
70 {
71         __asm__ __volatile__("wr        %0, 0x0, %%set_softint"
72                              : /* No outputs */
73                              : "r" (bits));
74 }
75
76 static inline void clear_softint(unsigned long bits)
77 {
78         __asm__ __volatile__("wr        %0, 0x0, %%clear_softint"
79                              : /* No outputs */
80                              : "r" (bits));
81 }
82
83 static inline unsigned long get_softint(void)
84 {
85         unsigned long retval;
86
87         __asm__ __volatile__("rd        %%softint, %0"
88                              : "=r" (retval));
89         return retval;
90 }
91
92 #endif