]>
Commit | Line | Data |
---|---|---|
1a59d1b8 | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
1da177e4 LT |
2 | /* |
3 | * Private structs/constants for PARISC IOSAPIC support | |
4 | * | |
5 | * Copyright (C) 2000 Hewlett Packard (Grant Grundler) | |
6 | * Copyright (C) 2000,2003 Grant Grundler (grundler at parisc-linux.org) | |
7 | * Copyright (C) 2002 Matthew Wilcox (willy at parisc-linux.org) | |
1da177e4 LT |
8 | */ |
9 | ||
10 | /* | |
11 | ** This file is private to iosapic driver. | |
12 | ** If stuff needs to be used by another driver, move it to a common file. | |
13 | ** | |
14 | ** WARNING: fields most data structures here are ordered to make sure | |
15 | ** they pack nicely for 64-bit compilation. (ie sizeof(long) == 8) | |
16 | */ | |
17 | ||
18 | ||
19 | /* | |
20 | ** Interrupt Routing Stuff | |
21 | ** ----------------------- | |
22 | ** The interrupt routing table consists of entries derived from | |
23 | ** MP Specification Draft 1.5. There is one interrupt routing | |
24 | ** table per cell. N- and L-class consist of a single cell. | |
25 | */ | |
26 | struct irt_entry { | |
27 | ||
28 | /* Entry Type 139 identifies an I/O SAPIC interrupt entry */ | |
29 | u8 entry_type; | |
30 | ||
31 | /* Entry Length 16 indicates entry is 16 bytes long */ | |
32 | u8 entry_length; | |
33 | ||
34 | /* | |
35 | ** Interrupt Type of 0 indicates a vectored interrupt, | |
36 | ** all other values are reserved | |
37 | */ | |
38 | u8 interrupt_type; | |
39 | ||
40 | /* | |
41 | ** PO and EL | |
42 | ** Polarity of SAPIC I/O input signals: | |
43 | ** 00 = Reserved | |
44 | ** 01 = Active high | |
45 | ** 10 = Reserved | |
46 | ** 11 = Active low | |
47 | ** Trigger mode of SAPIC I/O input signals: | |
48 | ** 00 = Reserved | |
49 | ** 01 = Edge-triggered | |
50 | ** 10 = Reserved | |
51 | ** 11 = Level-triggered | |
52 | */ | |
53 | u8 polarity_trigger; | |
54 | ||
55 | /* | |
56 | ** IRQ and DEVNO | |
57 | ** irq identifies PCI interrupt signal where | |
58 | ** 0x0 corresponds to INT_A#, | |
59 | ** 0x1 corresponds to INT_B#, | |
60 | ** 0x2 corresponds to INT_C# | |
61 | ** 0x3 corresponds to INT_D# | |
62 | ** PCI device number where interrupt originates | |
63 | */ | |
64 | u8 src_bus_irq_devno; | |
65 | ||
66 | /* Source Bus ID identifies the bus where interrupt signal comes from */ | |
67 | u8 src_bus_id; | |
68 | ||
69 | /* | |
70 | ** Segment ID is unique across a protection domain and | |
71 | ** identifies a segment of PCI buses (reserved in | |
72 | ** MP Specification Draft 1.5) | |
73 | */ | |
74 | u8 src_seg_id; | |
75 | ||
76 | /* | |
77 | ** Destination I/O SAPIC INTIN# identifies the INTIN n pin | |
78 | ** to which the signal is connected | |
79 | */ | |
80 | u8 dest_iosapic_intin; | |
81 | ||
82 | /* | |
83 | ** Destination I/O SAPIC Address identifies the I/O SAPIC | |
84 | ** to which the signal is connected | |
85 | */ | |
86 | u64 dest_iosapic_addr; | |
87 | }; | |
88 | ||
89 | #define IRT_IOSAPIC_TYPE 139 | |
90 | #define IRT_IOSAPIC_LENGTH 16 | |
91 | ||
92 | #define IRT_VECTORED_INTR 0 | |
93 | ||
94 | #define IRT_PO_MASK 0x3 | |
95 | #define IRT_ACTIVE_HI 1 | |
96 | #define IRT_ACTIVE_LO 3 | |
97 | ||
98 | #define IRT_EL_MASK 0x3 | |
99 | #define IRT_EL_SHIFT 2 | |
100 | #define IRT_EDGE_TRIG 1 | |
101 | #define IRT_LEVEL_TRIG 3 | |
102 | ||
103 | #define IRT_IRQ_MASK 0x3 | |
104 | #define IRT_DEV_MASK 0x1f | |
105 | #define IRT_DEV_SHIFT 2 | |
106 | ||
107 | #define IRT_IRQ_DEVNO_MASK ((IRT_DEV_MASK << IRT_DEV_SHIFT) | IRT_IRQ_MASK) | |
108 | ||
109 | #ifdef SUPPORT_MULTI_CELL | |
110 | struct iosapic_irt { | |
111 | struct iosapic_irt *irt_next; /* next routing table */ | |
112 | struct irt_entry *irt_base; /* intr routing table address */ | |
113 | size_t irte_count; /* number of entries in the table */ | |
114 | size_t irte_size; /* size (bytes) of each entry */ | |
115 | }; | |
116 | #endif | |
117 | ||
118 | struct vector_info { | |
119 | struct iosapic_info *iosapic; /* I/O SAPIC this vector is on */ | |
120 | struct irt_entry *irte; /* IRT entry */ | |
c2c4798e | 121 | u32 __iomem *eoi_addr; /* precalculate EOI reg address */ |
1da177e4 LT |
122 | u32 eoi_data; /* IA64: ? PA: swapped txn_data */ |
123 | int txn_irq; /* virtual IRQ number for processor */ | |
124 | ulong txn_addr; /* IA64: id_eid PA: partial HPA */ | |
125 | u32 txn_data; /* CPU interrupt bit */ | |
126 | u8 status; /* status/flags */ | |
127 | u8 irqline; /* INTINn(IRQ) */ | |
128 | }; | |
129 | ||
130 | ||
131 | struct iosapic_info { | |
132 | struct iosapic_info * isi_next; /* list of I/O SAPIC */ | |
133 | void __iomem * addr; /* remapped address */ | |
134 | unsigned long isi_hpa; /* physical base address */ | |
135 | struct vector_info * isi_vector; /* IRdT (IRQ line) array */ | |
136 | int isi_num_vectors; /* size of IRdT array */ | |
137 | int isi_status; /* status/flags */ | |
138 | unsigned int isi_version; /* DEBUG: data fr version reg */ | |
139 | }; | |
140 | ||
141 | ||
142 | ||
143 | #ifdef __IA64__ | |
144 | /* | |
145 | ** PA risc does NOT have any local sapics. IA64 does. | |
146 | ** PIB (Processor Interrupt Block) is handled by Astro or Dew (Stretch CEC). | |
147 | ** | |
148 | ** PA: Get id_eid from IRT and hardcode PIB to 0xfeeNNNN0 | |
149 | ** Emulate the data on PAT platforms. | |
150 | */ | |
151 | struct local_sapic_info { | |
152 | struct local_sapic_info *lsi_next; /* point to next CPU info */ | |
153 | int *lsi_cpu_id; /* point to logical CPU id */ | |
154 | unsigned long *lsi_id_eid; /* point to IA-64 CPU id */ | |
155 | int *lsi_status; /* point to CPU status */ | |
156 | void *lsi_private; /* point to special info */ | |
157 | }; | |
158 | ||
159 | /* | |
160 | ** "root" data structure which ties everything together. | |
161 | ** Should always be able to start with sapic_root and locate | |
162 | ** the desired information. | |
163 | */ | |
164 | struct sapic_info { | |
165 | struct sapic_info *si_next; /* info is per cell */ | |
166 | int si_cellid; /* cell id */ | |
167 | unsigned int si_status; /* status */ | |
168 | char *si_pib_base; /* intr blk base address */ | |
169 | local_sapic_info_t *si_local_info; | |
170 | io_sapic_info_t *si_io_info; | |
171 | extint_info_t *si_extint_info;/* External Intr info */ | |
172 | }; | |
173 | #endif | |
174 |