| 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); |