[IA64] PAL calls need physical mode, stacked
[linux-2.6] / include / asm-x86_64 / io_apic.h
1 #ifndef __ASM_IO_APIC_H
2 #define __ASM_IO_APIC_H
3
4 #include <asm/types.h>
5 #include <asm/mpspec.h>
6
7 /*
8  * Intel IO-APIC support for SMP and UP systems.
9  *
10  * Copyright (C) 1997, 1998, 1999, 2000 Ingo Molnar
11  */
12
13 #ifdef CONFIG_X86_IO_APIC
14
15 #ifdef CONFIG_PCI_MSI
16 static inline int use_pci_vector(void)  {return 1;}
17 static inline void disable_edge_ioapic_vector(unsigned int vector) { }
18 static inline void mask_and_ack_level_ioapic_vector(unsigned int vector) { }
19 static inline void end_edge_ioapic_vector (unsigned int vector) { }
20 #define startup_level_ioapic    startup_level_ioapic_vector
21 #define shutdown_level_ioapic   mask_IO_APIC_vector
22 #define enable_level_ioapic     unmask_IO_APIC_vector
23 #define disable_level_ioapic    mask_IO_APIC_vector
24 #define mask_and_ack_level_ioapic mask_and_ack_level_ioapic_vector
25 #define end_level_ioapic        end_level_ioapic_vector
26 #define set_ioapic_affinity     set_ioapic_affinity_vector
27
28 #define startup_edge_ioapic     startup_edge_ioapic_vector
29 #define shutdown_edge_ioapic    disable_edge_ioapic_vector
30 #define enable_edge_ioapic      unmask_IO_APIC_vector
31 #define disable_edge_ioapic     disable_edge_ioapic_vector
32 #define ack_edge_ioapic         ack_edge_ioapic_vector
33 #define end_edge_ioapic         end_edge_ioapic_vector
34 #else
35 static inline int use_pci_vector(void)  {return 0;}
36 static inline void disable_edge_ioapic_irq(unsigned int irq) { }
37 static inline void mask_and_ack_level_ioapic_irq(unsigned int irq) { }
38 static inline void end_edge_ioapic_irq (unsigned int irq) { }
39 #define startup_level_ioapic    startup_level_ioapic_irq
40 #define shutdown_level_ioapic   mask_IO_APIC_irq
41 #define enable_level_ioapic     unmask_IO_APIC_irq
42 #define disable_level_ioapic    mask_IO_APIC_irq
43 #define mask_and_ack_level_ioapic mask_and_ack_level_ioapic_irq
44 #define end_level_ioapic        end_level_ioapic_irq
45 #define set_ioapic_affinity     set_ioapic_affinity_irq
46
47 #define startup_edge_ioapic     startup_edge_ioapic_irq
48 #define shutdown_edge_ioapic    disable_edge_ioapic_irq
49 #define enable_edge_ioapic      unmask_IO_APIC_irq
50 #define disable_edge_ioapic     disable_edge_ioapic_irq
51 #define ack_edge_ioapic         ack_edge_ioapic_irq
52 #define end_edge_ioapic         end_edge_ioapic_irq
53 #endif
54
55 #define APIC_MISMATCH_DEBUG
56
57 #define IO_APIC_BASE(idx) \
58                 ((volatile int *)(__fix_to_virt(FIX_IO_APIC_BASE_0 + idx) \
59                 + (mp_ioapics[idx].mpc_apicaddr & ~PAGE_MASK)))
60
61 /*
62  * The structure of the IO-APIC:
63  */
64 union IO_APIC_reg_00 {
65         u32     raw;
66         struct {
67                 u32     __reserved_2    : 14,
68                         LTS             :  1,
69                         delivery_type   :  1,
70                         __reserved_1    :  8,
71                         ID              :  8;
72         } __attribute__ ((packed)) bits;
73 };
74
75 union IO_APIC_reg_01 {
76         u32     raw;
77         struct {
78                 u32     version         :  8,
79                 __reserved_2    :  7,
80                 PRQ             :  1,
81                 entries         :  8,
82                 __reserved_1    :  8;
83         } __attribute__ ((packed)) bits;
84 };
85
86 union IO_APIC_reg_02 {
87         u32     raw;
88         struct {
89                 u32     __reserved_2    : 24,
90                 arbitration     :  4,
91                 __reserved_1    :  4;
92         } __attribute__ ((packed)) bits;
93 };
94
95 union IO_APIC_reg_03 {
96         u32     raw;
97         struct {
98                 u32     boot_DT         :  1,
99                         __reserved_1    : 31;
100         } __attribute__ ((packed)) bits;
101 };
102
103 /*
104  * # of IO-APICs and # of IRQ routing registers
105  */
106 extern int nr_ioapics;
107 extern int nr_ioapic_registers[MAX_IO_APICS];
108
109 enum ioapic_irq_destination_types {
110         dest_Fixed = 0,
111         dest_LowestPrio = 1,
112         dest_SMI = 2,
113         dest__reserved_1 = 3,
114         dest_NMI = 4,
115         dest_INIT = 5,
116         dest__reserved_2 = 6,
117         dest_ExtINT = 7
118 };
119
120 struct IO_APIC_route_entry {
121         __u32   vector          :  8,
122                 delivery_mode   :  3,   /* 000: FIXED
123                                          * 001: lowest prio
124                                          * 111: ExtINT
125                                          */
126                 dest_mode       :  1,   /* 0: physical, 1: logical */
127                 delivery_status :  1,
128                 polarity        :  1,
129                 irr             :  1,
130                 trigger         :  1,   /* 0: edge, 1: level */
131                 mask            :  1,   /* 0: enabled, 1: disabled */
132                 __reserved_2    : 15;
133
134         union {         struct { __u32
135                                         __reserved_1    : 24,
136                                         physical_dest   :  4,
137                                         __reserved_2    :  4;
138                         } physical;
139
140                         struct { __u32
141                                         __reserved_1    : 24,
142                                         logical_dest    :  8;
143                         } logical;
144         } dest;
145
146 } __attribute__ ((packed));
147
148 /*
149  * MP-BIOS irq configuration table structures:
150  */
151
152 /* I/O APIC entries */
153 extern struct mpc_config_ioapic mp_ioapics[MAX_IO_APICS];
154
155 /* # of MP IRQ source entries */
156 extern int mp_irq_entries;
157
158 /* MP IRQ source entries */
159 extern struct mpc_config_intsrc mp_irqs[MAX_IRQ_SOURCES];
160
161 /* non-0 if default (table-less) MP configuration */
162 extern int mpc_default_type;
163
164 static inline unsigned int io_apic_read(unsigned int apic, unsigned int reg)
165 {
166         *IO_APIC_BASE(apic) = reg;
167         return *(IO_APIC_BASE(apic)+4);
168 }
169
170 static inline void io_apic_write(unsigned int apic, unsigned int reg, unsigned int value)
171 {
172         *IO_APIC_BASE(apic) = reg;
173         *(IO_APIC_BASE(apic)+4) = value;
174 }
175
176 /*
177  * Re-write a value: to be used for read-modify-write
178  * cycles where the read already set up the index register.
179  */
180 static inline void io_apic_modify(unsigned int apic, unsigned int value)
181 {
182         *(IO_APIC_BASE(apic)+4) = value;
183 }
184
185 /*
186  * Synchronize the IO-APIC and the CPU by doing
187  * a dummy read from the IO-APIC
188  */
189 static inline void io_apic_sync(unsigned int apic)
190 {
191         (void) *(IO_APIC_BASE(apic)+4);
192 }
193
194 /* 1 if "noapic" boot option passed */
195 extern int skip_ioapic_setup;
196
197 /*
198  * If we use the IO-APIC for IRQ routing, disable automatic
199  * assignment of PCI IRQ's.
200  */
201 #define io_apic_assign_pci_irqs (mp_irq_entries && !skip_ioapic_setup && io_apic_irqs)
202
203 #ifdef CONFIG_ACPI
204 extern int io_apic_get_version (int ioapic);
205 extern int io_apic_get_redir_entries (int ioapic);
206 extern int io_apic_set_pci_routing (int ioapic, int pin, int irq, int, int);
207 extern int timer_uses_ioapic_pin_0;
208 #endif
209
210 extern int sis_apic_bug; /* dummy */ 
211
212 #else  /* !CONFIG_X86_IO_APIC */
213 #define io_apic_assign_pci_irqs 0
214 #endif
215
216 extern int assign_irq_vector(int irq);
217
218 void enable_NMI_through_LVT0 (void * dummy);
219
220 extern spinlock_t i8259A_lock;
221
222 #endif