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> 18 #include <asm/lppaca.h> 19 #include <asm/iseries/it_lp_queue.h> 20 #include <asm/iseries/it_lp_reg_save.h> 21 #include <asm/paca.h> 22 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 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 50 /* The Paca is an array with one entry per processor. Each contains an 51 * lppaca, which contains the information shared between the 52 * hypervisor and Linux. 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 */ 59 #define PACA_INIT_COMMON(number) \ 60 .lppaca_ptr = &lppaca[number], \ 61 .lock_token = 0x8000, \ 62 .paca_index = (number), /* Paca Index */ \ 63 .kernel_toc = (unsigned long)(&__toc_start) + 0x8000UL, \ 64 .hw_cpu_id = 0xffff, 65 66 #ifdef CONFIG_PPC_ISERIES 67 #define PACA_INIT_ISERIES(number) \ 68 .reg_save_ptr = &iseries_reg_save[number], 69 70 #define PACA_INIT(number) \ 71 { \ 72 PACA_INIT_COMMON(number) \ 73 PACA_INIT_ISERIES(number) \ 74 } 75 76 #else 77 #define PACA_INIT(number) \ 78 { \ 79 PACA_INIT_COMMON(number) \ 80 } 81 82 #endif 83 84 struct paca_struct paca[] = { 85 PACA_INIT(0), 86 #if NR_CPUS > 1 87 PACA_INIT( 1), PACA_INIT( 2), PACA_INIT( 3), 88 #if NR_CPUS > 4 89 PACA_INIT( 4), PACA_INIT( 5), PACA_INIT( 6), PACA_INIT( 7), 90 #if NR_CPUS > 8 91 PACA_INIT( 8), PACA_INIT( 9), PACA_INIT( 10), PACA_INIT( 11), 92 PACA_INIT( 12), PACA_INIT( 13), PACA_INIT( 14), PACA_INIT( 15), 93 PACA_INIT( 16), PACA_INIT( 17), PACA_INIT( 18), PACA_INIT( 19), 94 PACA_INIT( 20), PACA_INIT( 21), PACA_INIT( 22), PACA_INIT( 23), 95 PACA_INIT( 24), PACA_INIT( 25), PACA_INIT( 26), PACA_INIT( 27), 96 PACA_INIT( 28), PACA_INIT( 29), PACA_INIT( 30), PACA_INIT( 31), 97 #if NR_CPUS > 32 98 PACA_INIT( 32), PACA_INIT( 33), PACA_INIT( 34), PACA_INIT( 35), 99 PACA_INIT( 36), PACA_INIT( 37), PACA_INIT( 38), PACA_INIT( 39), 100 PACA_INIT( 40), PACA_INIT( 41), PACA_INIT( 42), PACA_INIT( 43), 101 PACA_INIT( 44), PACA_INIT( 45), PACA_INIT( 46), PACA_INIT( 47), 102 PACA_INIT( 48), PACA_INIT( 49), PACA_INIT( 50), PACA_INIT( 51), 103 PACA_INIT( 52), PACA_INIT( 53), PACA_INIT( 54), PACA_INIT( 55), 104 PACA_INIT( 56), PACA_INIT( 57), PACA_INIT( 58), PACA_INIT( 59), 105 PACA_INIT( 60), PACA_INIT( 61), PACA_INIT( 62), PACA_INIT( 63), 106 #if NR_CPUS > 64 107 PACA_INIT( 64), PACA_INIT( 65), PACA_INIT( 66), PACA_INIT( 67), 108 PACA_INIT( 68), PACA_INIT( 69), PACA_INIT( 70), PACA_INIT( 71), 109 PACA_INIT( 72), PACA_INIT( 73), PACA_INIT( 74), PACA_INIT( 75), 110 PACA_INIT( 76), PACA_INIT( 77), PACA_INIT( 78), PACA_INIT( 79), 111 PACA_INIT( 80), PACA_INIT( 81), PACA_INIT( 82), PACA_INIT( 83), 112 PACA_INIT( 84), PACA_INIT( 85), PACA_INIT( 86), PACA_INIT( 87), 113 PACA_INIT( 88), PACA_INIT( 89), PACA_INIT( 90), PACA_INIT( 91), 114 PACA_INIT( 92), PACA_INIT( 93), PACA_INIT( 94), PACA_INIT( 95), 115 PACA_INIT( 96), PACA_INIT( 97), PACA_INIT( 98), PACA_INIT( 99), 116 PACA_INIT(100), PACA_INIT(101), PACA_INIT(102), PACA_INIT(103), 117 PACA_INIT(104), PACA_INIT(105), PACA_INIT(106), PACA_INIT(107), 118 PACA_INIT(108), PACA_INIT(109), PACA_INIT(110), PACA_INIT(111), 119 PACA_INIT(112), PACA_INIT(113), PACA_INIT(114), PACA_INIT(115), 120 PACA_INIT(116), PACA_INIT(117), PACA_INIT(118), PACA_INIT(119), 121 PACA_INIT(120), PACA_INIT(121), PACA_INIT(122), PACA_INIT(123), 122 PACA_INIT(124), PACA_INIT(125), PACA_INIT(126), PACA_INIT(127), 123 #endif 124 #endif 125 #endif 126 #endif 127 #endif 128 }; 129 EXPORT_SYMBOL(paca); 130