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/types.h> 11 #include <linux/threads.h> 12 #include <linux/module.h> 13 14 #include <asm/processor.h> 15 #include <asm/ptrace.h> 16 #include <asm/page.h> 17 #include <asm/lppaca.h> 18 #include <asm/iseries/it_lp_reg_save.h> 19 #include <asm/paca.h> 20 21 22 /* This symbol is provided by the linker - let it fill in the paca 23 * field correctly */ 24 extern unsigned long __toc_start; 25 26 /* 27 * iSeries structure which the hypervisor knows about - this structure 28 * should not cross a page boundary. The vpa_init/register_vpa call 29 * is now known to fail if the lppaca structure crosses a page 30 * boundary. The lppaca is also used on POWER5 pSeries boxes. The 31 * lppaca is 640 bytes long, and cannot readily change since the 32 * hypervisor knows its layout, so a 1kB alignment will suffice to 33 * ensure that it doesn't cross a page boundary. 34 */ 35 struct lppaca lppaca[] = { 36 [0 ... (NR_CPUS-1)] = { 37 .desc = 0xd397d781, /* "LpPa" */ 38 .size = sizeof(struct lppaca), 39 .dyn_proc_status = 2, 40 .decr_val = 0x00ff0000, 41 .fpregs_in_use = 1, 42 .end_of_quantum = 0xfffffffffffffffful, 43 .slb_count = 64, 44 .vmxregs_in_use = 0, 45 }, 46 }; 47 48 /* The Paca is an array with one entry per processor. Each contains an 49 * lppaca, which contains the information shared between the 50 * hypervisor and Linux. 51 * On systems with hardware multi-threading, there are two threads 52 * per processor. The Paca array must contain an entry for each thread. 53 * The VPD Areas will give a max logical processors = 2 * max physical 54 * processors. The processor VPD array needs one entry per physical 55 * processor (not thread). 56 */ 57 #define PACA_INIT_COMMON(number) \ 58 .lppaca_ptr = &lppaca[number], \ 59 .lock_token = 0x8000, \ 60 .paca_index = (number), /* Paca Index */ \ 61 .kernel_toc = (unsigned long)(&__toc_start) + 0x8000UL, \ 62 .hw_cpu_id = 0xffff, 63 64 #ifdef CONFIG_PPC_ISERIES 65 #define PACA_INIT_ISERIES(number) \ 66 .reg_save_ptr = &iseries_reg_save[number], 67 68 #define PACA_INIT(number) \ 69 { \ 70 PACA_INIT_COMMON(number) \ 71 PACA_INIT_ISERIES(number) \ 72 } 73 74 #else 75 #define PACA_INIT(number) \ 76 { \ 77 PACA_INIT_COMMON(number) \ 78 } 79 80 #endif 81 82 struct paca_struct paca[] = { 83 PACA_INIT(0), 84 #if NR_CPUS > 1 85 PACA_INIT( 1), PACA_INIT( 2), PACA_INIT( 3), 86 #if NR_CPUS > 4 87 PACA_INIT( 4), PACA_INIT( 5), PACA_INIT( 6), PACA_INIT( 7), 88 #if NR_CPUS > 8 89 PACA_INIT( 8), PACA_INIT( 9), PACA_INIT( 10), PACA_INIT( 11), 90 PACA_INIT( 12), PACA_INIT( 13), PACA_INIT( 14), PACA_INIT( 15), 91 PACA_INIT( 16), PACA_INIT( 17), PACA_INIT( 18), PACA_INIT( 19), 92 PACA_INIT( 20), PACA_INIT( 21), PACA_INIT( 22), PACA_INIT( 23), 93 PACA_INIT( 24), PACA_INIT( 25), PACA_INIT( 26), PACA_INIT( 27), 94 PACA_INIT( 28), PACA_INIT( 29), PACA_INIT( 30), PACA_INIT( 31), 95 #if NR_CPUS > 32 96 PACA_INIT( 32), PACA_INIT( 33), PACA_INIT( 34), PACA_INIT( 35), 97 PACA_INIT( 36), PACA_INIT( 37), PACA_INIT( 38), PACA_INIT( 39), 98 PACA_INIT( 40), PACA_INIT( 41), PACA_INIT( 42), PACA_INIT( 43), 99 PACA_INIT( 44), PACA_INIT( 45), PACA_INIT( 46), PACA_INIT( 47), 100 PACA_INIT( 48), PACA_INIT( 49), PACA_INIT( 50), PACA_INIT( 51), 101 PACA_INIT( 52), PACA_INIT( 53), PACA_INIT( 54), PACA_INIT( 55), 102 PACA_INIT( 56), PACA_INIT( 57), PACA_INIT( 58), PACA_INIT( 59), 103 PACA_INIT( 60), PACA_INIT( 61), PACA_INIT( 62), PACA_INIT( 63), 104 #if NR_CPUS > 64 105 PACA_INIT( 64), PACA_INIT( 65), PACA_INIT( 66), PACA_INIT( 67), 106 PACA_INIT( 68), PACA_INIT( 69), PACA_INIT( 70), PACA_INIT( 71), 107 PACA_INIT( 72), PACA_INIT( 73), PACA_INIT( 74), PACA_INIT( 75), 108 PACA_INIT( 76), PACA_INIT( 77), PACA_INIT( 78), PACA_INIT( 79), 109 PACA_INIT( 80), PACA_INIT( 81), PACA_INIT( 82), PACA_INIT( 83), 110 PACA_INIT( 84), PACA_INIT( 85), PACA_INIT( 86), PACA_INIT( 87), 111 PACA_INIT( 88), PACA_INIT( 89), PACA_INIT( 90), PACA_INIT( 91), 112 PACA_INIT( 92), PACA_INIT( 93), PACA_INIT( 94), PACA_INIT( 95), 113 PACA_INIT( 96), PACA_INIT( 97), PACA_INIT( 98), PACA_INIT( 99), 114 PACA_INIT(100), PACA_INIT(101), PACA_INIT(102), PACA_INIT(103), 115 PACA_INIT(104), PACA_INIT(105), PACA_INIT(106), PACA_INIT(107), 116 PACA_INIT(108), PACA_INIT(109), PACA_INIT(110), PACA_INIT(111), 117 PACA_INIT(112), PACA_INIT(113), PACA_INIT(114), PACA_INIT(115), 118 PACA_INIT(116), PACA_INIT(117), PACA_INIT(118), PACA_INIT(119), 119 PACA_INIT(120), PACA_INIT(121), PACA_INIT(122), PACA_INIT(123), 120 PACA_INIT(124), PACA_INIT(125), PACA_INIT(126), PACA_INIT(127), 121 #endif 122 #endif 123 #endif 124 #endif 125 #endif 126 }; 127 EXPORT_SYMBOL(paca); 128