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1da177e4 LT |
1 | /* |
2 | * c 2001 PPC 64 Team, IBM Corp | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License | |
6 | * as published by the Free Software Foundation; either version | |
7 | * 2 of the License, or (at your option) any later version. | |
8 | */ | |
9 | ||
10 | #include <linux/config.h> | |
11 | #include <linux/types.h> | |
12 | #include <linux/threads.h> | |
13 | #include <linux/module.h> | |
14 | ||
15 | #include <asm/processor.h> | |
16 | #include <asm/ptrace.h> | |
17 | #include <asm/page.h> | |
1da177e4 | 18 | #include <asm/lppaca.h> |
8875ccfb | 19 | #include <asm/iseries/it_lp_queue.h> |
1888e7b5 | 20 | #include <asm/iseries/it_lp_reg_save.h> |
1da177e4 LT |
21 | #include <asm/paca.h> |
22 | ||
1da177e4 LT |
23 | |
24 | /* This symbol is provided by the linker - let it fill in the paca | |
25 | * field correctly */ | |
26 | extern unsigned long __toc_start; | |
27 | ||
3356bb9f DG |
28 | /* |
29 | * iSeries structure which the hypervisor knows about - this structure | |
30 | * should not cross a page boundary. The vpa_init/register_vpa call | |
31 | * is now known to fail if the lppaca structure crosses a page | |
32 | * boundary. The lppaca is also used on POWER5 pSeries boxes. The | |
33 | * lppaca is 640 bytes long, and cannot readily change since the | |
34 | * hypervisor knows its layout, so a 1kB alignment will suffice to | |
35 | * ensure that it doesn't cross a page boundary. | |
36 | */ | |
37 | struct lppaca lppaca[] = { | |
38 | [0 ... (NR_CPUS-1)] = { | |
39 | .desc = 0xd397d781, /* "LpPa" */ | |
40 | .size = sizeof(struct lppaca), | |
41 | .dyn_proc_status = 2, | |
42 | .decr_val = 0x00ff0000, | |
43 | .fpregs_in_use = 1, | |
44 | .end_of_quantum = 0xfffffffffffffffful, | |
45 | .slb_count = 64, | |
46 | .vmxregs_in_use = 0, | |
47 | }, | |
48 | }; | |
49 | ||
8882a4da | 50 | /* The Paca is an array with one entry per processor. Each contains an |
1da177e4 | 51 | * lppaca, which contains the information shared between the |
1888e7b5 | 52 | * hypervisor and Linux. |
1da177e4 LT |
53 | * On systems with hardware multi-threading, there are two threads |
54 | * per processor. The Paca array must contain an entry for each thread. | |
55 | * The VPD Areas will give a max logical processors = 2 * max physical | |
56 | * processors. The processor VPD array needs one entry per physical | |
57 | * processor (not thread). | |
58 | */ | |
ee48444b | 59 | #define PACA_INIT_COMMON(number, start, asrr, asrv) \ |
3356bb9f | 60 | .lppaca_ptr = &lppaca[number], \ |
1da177e4 LT |
61 | .lock_token = 0x8000, \ |
62 | .paca_index = (number), /* Paca Index */ \ | |
1da177e4 LT |
63 | .kernel_toc = (unsigned long)(&__toc_start) + 0x8000UL, \ |
64 | .stab_real = (asrr), /* Real pointer to segment table */ \ | |
65 | .stab_addr = (asrv), /* Virt pointer to segment table */ \ | |
66 | .cpu_start = (start), /* Processor start */ \ | |
3356bb9f | 67 | .hw_cpu_id = 0xffff, |
1da177e4 | 68 | |
1da177e4 | 69 | #ifdef CONFIG_PPC_ISERIES |
ee48444b | 70 | #define PACA_INIT_ISERIES(number) \ |
1888e7b5 | 71 | .reg_save_ptr = &iseries_reg_save[number], |
ee48444b ME |
72 | |
73 | #define PACA_INIT(number) \ | |
74 | { \ | |
75 | PACA_INIT_COMMON(number, 0, 0, 0) \ | |
76 | PACA_INIT_ISERIES(number) \ | |
77 | } | |
78 | ||
79 | #define BOOTCPU_PACA_INIT(number) \ | |
80 | { \ | |
c59c464a | 81 | PACA_INIT_COMMON(number, 1, 0, (u64)&initial_stab) \ |
ee48444b ME |
82 | PACA_INIT_ISERIES(number) \ |
83 | } | |
84 | ||
1da177e4 | 85 | #else |
ee48444b ME |
86 | #define PACA_INIT(number) \ |
87 | { \ | |
88 | PACA_INIT_COMMON(number, 0, 0, 0) \ | |
89 | } | |
90 | ||
91 | #define BOOTCPU_PACA_INIT(number) \ | |
92 | { \ | |
c59c464a | 93 | PACA_INIT_COMMON(number, 1, STAB0_PHYS_ADDR, (u64)&initial_stab) \ |
ee48444b | 94 | } |
1da177e4 | 95 | #endif |
ee48444b ME |
96 | |
97 | struct paca_struct paca[] = { | |
98 | BOOTCPU_PACA_INIT(0), | |
1da177e4 | 99 | #if NR_CPUS > 1 |
ee48444b | 100 | PACA_INIT( 1), PACA_INIT( 2), PACA_INIT( 3), |
1da177e4 | 101 | #if NR_CPUS > 4 |
ee48444b | 102 | PACA_INIT( 4), PACA_INIT( 5), PACA_INIT( 6), PACA_INIT( 7), |
1da177e4 | 103 | #if NR_CPUS > 8 |
ee48444b ME |
104 | PACA_INIT( 8), PACA_INIT( 9), PACA_INIT( 10), PACA_INIT( 11), |
105 | PACA_INIT( 12), PACA_INIT( 13), PACA_INIT( 14), PACA_INIT( 15), | |
106 | PACA_INIT( 16), PACA_INIT( 17), PACA_INIT( 18), PACA_INIT( 19), | |
107 | PACA_INIT( 20), PACA_INIT( 21), PACA_INIT( 22), PACA_INIT( 23), | |
108 | PACA_INIT( 24), PACA_INIT( 25), PACA_INIT( 26), PACA_INIT( 27), | |
109 | PACA_INIT( 28), PACA_INIT( 29), PACA_INIT( 30), PACA_INIT( 31), | |
1da177e4 | 110 | #if NR_CPUS > 32 |
ee48444b ME |
111 | PACA_INIT( 32), PACA_INIT( 33), PACA_INIT( 34), PACA_INIT( 35), |
112 | PACA_INIT( 36), PACA_INIT( 37), PACA_INIT( 38), PACA_INIT( 39), | |
113 | PACA_INIT( 40), PACA_INIT( 41), PACA_INIT( 42), PACA_INIT( 43), | |
114 | PACA_INIT( 44), PACA_INIT( 45), PACA_INIT( 46), PACA_INIT( 47), | |
115 | PACA_INIT( 48), PACA_INIT( 49), PACA_INIT( 50), PACA_INIT( 51), | |
116 | PACA_INIT( 52), PACA_INIT( 53), PACA_INIT( 54), PACA_INIT( 55), | |
117 | PACA_INIT( 56), PACA_INIT( 57), PACA_INIT( 58), PACA_INIT( 59), | |
118 | PACA_INIT( 60), PACA_INIT( 61), PACA_INIT( 62), PACA_INIT( 63), | |
1da177e4 | 119 | #if NR_CPUS > 64 |
ee48444b ME |
120 | PACA_INIT( 64), PACA_INIT( 65), PACA_INIT( 66), PACA_INIT( 67), |
121 | PACA_INIT( 68), PACA_INIT( 69), PACA_INIT( 70), PACA_INIT( 71), | |
122 | PACA_INIT( 72), PACA_INIT( 73), PACA_INIT( 74), PACA_INIT( 75), | |
123 | PACA_INIT( 76), PACA_INIT( 77), PACA_INIT( 78), PACA_INIT( 79), | |
124 | PACA_INIT( 80), PACA_INIT( 81), PACA_INIT( 82), PACA_INIT( 83), | |
125 | PACA_INIT( 84), PACA_INIT( 85), PACA_INIT( 86), PACA_INIT( 87), | |
126 | PACA_INIT( 88), PACA_INIT( 89), PACA_INIT( 90), PACA_INIT( 91), | |
127 | PACA_INIT( 92), PACA_INIT( 93), PACA_INIT( 94), PACA_INIT( 95), | |
128 | PACA_INIT( 96), PACA_INIT( 97), PACA_INIT( 98), PACA_INIT( 99), | |
129 | PACA_INIT(100), PACA_INIT(101), PACA_INIT(102), PACA_INIT(103), | |
130 | PACA_INIT(104), PACA_INIT(105), PACA_INIT(106), PACA_INIT(107), | |
131 | PACA_INIT(108), PACA_INIT(109), PACA_INIT(110), PACA_INIT(111), | |
132 | PACA_INIT(112), PACA_INIT(113), PACA_INIT(114), PACA_INIT(115), | |
133 | PACA_INIT(116), PACA_INIT(117), PACA_INIT(118), PACA_INIT(119), | |
134 | PACA_INIT(120), PACA_INIT(121), PACA_INIT(122), PACA_INIT(123), | |
135 | PACA_INIT(124), PACA_INIT(125), PACA_INIT(126), PACA_INIT(127), | |
1da177e4 LT |
136 | #endif |
137 | #endif | |
138 | #endif | |
139 | #endif | |
140 | #endif | |
141 | }; | |
142 | EXPORT_SYMBOL(paca); |