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 #include <asm/mmu.h> 21 22 23 /* This symbol is provided by the linker - let it fill in the paca 24 * field correctly */ 25 extern unsigned long __toc_start; 26 27 /* 28 * iSeries structure which the hypervisor knows about - this structure 29 * should not cross a page boundary. The vpa_init/register_vpa call 30 * is now known to fail if the lppaca structure crosses a page 31 * boundary. The lppaca is also used on POWER5 pSeries boxes. The 32 * lppaca is 640 bytes long, and cannot readily change since the 33 * hypervisor knows its layout, so a 1kB alignment will suffice to 34 * ensure that it doesn't cross a page boundary. 35 */ 36 struct lppaca lppaca[] = { 37 [0 ... (NR_CPUS-1)] = { 38 .desc = 0xd397d781, /* "LpPa" */ 39 .size = sizeof(struct lppaca), 40 .dyn_proc_status = 2, 41 .decr_val = 0x00ff0000, 42 .fpregs_in_use = 1, 43 .end_of_quantum = 0xfffffffffffffffful, 44 .slb_count = 64, 45 .vmxregs_in_use = 0, 46 }, 47 }; 48 49 /* 50 * 3 persistent SLBs are registered here. The buffer will be zero 51 * initially, hence will all be invaild until we actually write them. 52 */ 53 struct slb_shadow slb_shadow[] __cacheline_aligned = { 54 [0 ... (NR_CPUS-1)] = { 55 .persistent = SLB_NUM_BOLTED, 56 .buffer_length = sizeof(struct slb_shadow), 57 }, 58 }; 59 60 /* The Paca is an array with one entry per processor. Each contains an 61 * lppaca, which contains the information shared between the 62 * hypervisor and Linux. 63 * On systems with hardware multi-threading, there are two threads 64 * per processor. The Paca array must contain an entry for each thread. 65 * The VPD Areas will give a max logical processors = 2 * max physical 66 * processors. The processor VPD array needs one entry per physical 67 * processor (not thread). 68 */ 69 #define PACA_INIT_COMMON(number) \ 70 .lppaca_ptr = &lppaca[number], \ 71 .lock_token = 0x8000, \ 72 .paca_index = (number), /* Paca Index */ \ 73 .kernel_toc = (unsigned long)(&__toc_start) + 0x8000UL, \ 74 .hw_cpu_id = 0xffff, \ 75 .slb_shadow_ptr = &slb_shadow[number], 76 77 #ifdef CONFIG_PPC_ISERIES 78 #define PACA_INIT_ISERIES(number) \ 79 .reg_save_ptr = &iseries_reg_save[number], 80 81 #define PACA_INIT(number) \ 82 { \ 83 PACA_INIT_COMMON(number) \ 84 PACA_INIT_ISERIES(number) \ 85 } 86 87 #else 88 #define PACA_INIT(number) \ 89 { \ 90 PACA_INIT_COMMON(number) \ 91 } 92 93 #endif 94 95 struct paca_struct paca[] = { 96 PACA_INIT(0), 97 #if NR_CPUS > 1 98 PACA_INIT( 1), PACA_INIT( 2), PACA_INIT( 3), 99 #if NR_CPUS > 4 100 PACA_INIT( 4), PACA_INIT( 5), PACA_INIT( 6), PACA_INIT( 7), 101 #if NR_CPUS > 8 102 PACA_INIT( 8), PACA_INIT( 9), PACA_INIT( 10), PACA_INIT( 11), 103 PACA_INIT( 12), PACA_INIT( 13), PACA_INIT( 14), PACA_INIT( 15), 104 PACA_INIT( 16), PACA_INIT( 17), PACA_INIT( 18), PACA_INIT( 19), 105 PACA_INIT( 20), PACA_INIT( 21), PACA_INIT( 22), PACA_INIT( 23), 106 PACA_INIT( 24), PACA_INIT( 25), PACA_INIT( 26), PACA_INIT( 27), 107 PACA_INIT( 28), PACA_INIT( 29), PACA_INIT( 30), PACA_INIT( 31), 108 #if NR_CPUS > 32 109 PACA_INIT( 32), PACA_INIT( 33), PACA_INIT( 34), PACA_INIT( 35), 110 PACA_INIT( 36), PACA_INIT( 37), PACA_INIT( 38), PACA_INIT( 39), 111 PACA_INIT( 40), PACA_INIT( 41), PACA_INIT( 42), PACA_INIT( 43), 112 PACA_INIT( 44), PACA_INIT( 45), PACA_INIT( 46), PACA_INIT( 47), 113 PACA_INIT( 48), PACA_INIT( 49), PACA_INIT( 50), PACA_INIT( 51), 114 PACA_INIT( 52), PACA_INIT( 53), PACA_INIT( 54), PACA_INIT( 55), 115 PACA_INIT( 56), PACA_INIT( 57), PACA_INIT( 58), PACA_INIT( 59), 116 PACA_INIT( 60), PACA_INIT( 61), PACA_INIT( 62), PACA_INIT( 63), 117 #if NR_CPUS > 64 118 PACA_INIT( 64), PACA_INIT( 65), PACA_INIT( 66), PACA_INIT( 67), 119 PACA_INIT( 68), PACA_INIT( 69), PACA_INIT( 70), PACA_INIT( 71), 120 PACA_INIT( 72), PACA_INIT( 73), PACA_INIT( 74), PACA_INIT( 75), 121 PACA_INIT( 76), PACA_INIT( 77), PACA_INIT( 78), PACA_INIT( 79), 122 PACA_INIT( 80), PACA_INIT( 81), PACA_INIT( 82), PACA_INIT( 83), 123 PACA_INIT( 84), PACA_INIT( 85), PACA_INIT( 86), PACA_INIT( 87), 124 PACA_INIT( 88), PACA_INIT( 89), PACA_INIT( 90), PACA_INIT( 91), 125 PACA_INIT( 92), PACA_INIT( 93), PACA_INIT( 94), PACA_INIT( 95), 126 PACA_INIT( 96), PACA_INIT( 97), PACA_INIT( 98), PACA_INIT( 99), 127 PACA_INIT(100), PACA_INIT(101), PACA_INIT(102), PACA_INIT(103), 128 PACA_INIT(104), PACA_INIT(105), PACA_INIT(106), PACA_INIT(107), 129 PACA_INIT(108), PACA_INIT(109), PACA_INIT(110), PACA_INIT(111), 130 PACA_INIT(112), PACA_INIT(113), PACA_INIT(114), PACA_INIT(115), 131 PACA_INIT(116), PACA_INIT(117), PACA_INIT(118), PACA_INIT(119), 132 PACA_INIT(120), PACA_INIT(121), PACA_INIT(122), PACA_INIT(123), 133 PACA_INIT(124), PACA_INIT(125), PACA_INIT(126), PACA_INIT(127), 134 #endif 135 #endif 136 #endif 137 #endif 138 #endif 139 }; 140 EXPORT_SYMBOL(paca); 141