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1888e7b51c
On iSeries, the paca contains, amongst other things an ItLpRegSave structure used by the hypervisor to save registers. The hypervisor locates this area through a pointer at the beginning of the paca, so the structure itself can be located elsewhere. This patch moves the reg_save area out into its own array. This reduces the amount of iSeries specific gunk which is visible to general powerpc code via paca.h Built and booted on POWER5 LPAR and iSeries RS64. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
132 lines
4.9 KiB
C
132 lines
4.9 KiB
C
/*
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* c 2001 PPC 64 Team, IBM Corp
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/config.h>
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#include <linux/types.h>
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#include <linux/threads.h>
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#include <linux/module.h>
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#include <asm/processor.h>
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#include <asm/ptrace.h>
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#include <asm/page.h>
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#include <asm/lppaca.h>
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#include <asm/iseries/it_lp_queue.h>
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#include <asm/iseries/it_lp_reg_save.h>
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#include <asm/paca.h>
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/* This symbol is provided by the linker - let it fill in the paca
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* field correctly */
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extern unsigned long __toc_start;
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/* The Paca is an array with one entry per processor. Each contains an
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* lppaca, which contains the information shared between the
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* hypervisor and Linux.
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* On systems with hardware multi-threading, there are two threads
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* per processor. The Paca array must contain an entry for each thread.
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* The VPD Areas will give a max logical processors = 2 * max physical
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* processors. The processor VPD array needs one entry per physical
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* processor (not thread).
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*/
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#define PACA_INIT_COMMON(number, start, asrr, asrv) \
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.lock_token = 0x8000, \
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.paca_index = (number), /* Paca Index */ \
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.default_decr = 0x00ff0000, /* Initial Decr */ \
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.kernel_toc = (unsigned long)(&__toc_start) + 0x8000UL, \
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.stab_real = (asrr), /* Real pointer to segment table */ \
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.stab_addr = (asrv), /* Virt pointer to segment table */ \
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.cpu_start = (start), /* Processor start */ \
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.hw_cpu_id = 0xffff, \
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.lppaca = { \
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.desc = 0xd397d781, /* "LpPa" */ \
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.size = sizeof(struct lppaca), \
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.dyn_proc_status = 2, \
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.decr_val = 0x00ff0000, \
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.fpregs_in_use = 1, \
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.end_of_quantum = 0xfffffffffffffffful, \
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.slb_count = 64, \
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.vmxregs_in_use = 0, \
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}, \
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#ifdef CONFIG_PPC_ISERIES
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#define PACA_INIT_ISERIES(number) \
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.lppaca_ptr = &paca[number].lppaca, \
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.reg_save_ptr = &iseries_reg_save[number],
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#define PACA_INIT(number) \
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{ \
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PACA_INIT_COMMON(number, 0, 0, 0) \
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PACA_INIT_ISERIES(number) \
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}
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#define BOOTCPU_PACA_INIT(number) \
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{ \
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PACA_INIT_COMMON(number, 1, 0, (u64)&initial_stab) \
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PACA_INIT_ISERIES(number) \
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}
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#else
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#define PACA_INIT(number) \
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{ \
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PACA_INIT_COMMON(number, 0, 0, 0) \
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}
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#define BOOTCPU_PACA_INIT(number) \
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{ \
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PACA_INIT_COMMON(number, 1, STAB0_PHYS_ADDR, (u64)&initial_stab) \
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}
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#endif
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struct paca_struct paca[] = {
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BOOTCPU_PACA_INIT(0),
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#if NR_CPUS > 1
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PACA_INIT( 1), PACA_INIT( 2), PACA_INIT( 3),
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#if NR_CPUS > 4
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PACA_INIT( 4), PACA_INIT( 5), PACA_INIT( 6), PACA_INIT( 7),
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#if NR_CPUS > 8
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PACA_INIT( 8), PACA_INIT( 9), PACA_INIT( 10), PACA_INIT( 11),
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PACA_INIT( 12), PACA_INIT( 13), PACA_INIT( 14), PACA_INIT( 15),
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PACA_INIT( 16), PACA_INIT( 17), PACA_INIT( 18), PACA_INIT( 19),
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PACA_INIT( 20), PACA_INIT( 21), PACA_INIT( 22), PACA_INIT( 23),
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PACA_INIT( 24), PACA_INIT( 25), PACA_INIT( 26), PACA_INIT( 27),
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PACA_INIT( 28), PACA_INIT( 29), PACA_INIT( 30), PACA_INIT( 31),
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#if NR_CPUS > 32
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PACA_INIT( 32), PACA_INIT( 33), PACA_INIT( 34), PACA_INIT( 35),
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PACA_INIT( 36), PACA_INIT( 37), PACA_INIT( 38), PACA_INIT( 39),
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PACA_INIT( 40), PACA_INIT( 41), PACA_INIT( 42), PACA_INIT( 43),
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PACA_INIT( 44), PACA_INIT( 45), PACA_INIT( 46), PACA_INIT( 47),
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PACA_INIT( 48), PACA_INIT( 49), PACA_INIT( 50), PACA_INIT( 51),
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PACA_INIT( 52), PACA_INIT( 53), PACA_INIT( 54), PACA_INIT( 55),
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PACA_INIT( 56), PACA_INIT( 57), PACA_INIT( 58), PACA_INIT( 59),
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PACA_INIT( 60), PACA_INIT( 61), PACA_INIT( 62), PACA_INIT( 63),
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#if NR_CPUS > 64
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PACA_INIT( 64), PACA_INIT( 65), PACA_INIT( 66), PACA_INIT( 67),
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PACA_INIT( 68), PACA_INIT( 69), PACA_INIT( 70), PACA_INIT( 71),
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PACA_INIT( 72), PACA_INIT( 73), PACA_INIT( 74), PACA_INIT( 75),
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PACA_INIT( 76), PACA_INIT( 77), PACA_INIT( 78), PACA_INIT( 79),
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PACA_INIT( 80), PACA_INIT( 81), PACA_INIT( 82), PACA_INIT( 83),
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PACA_INIT( 84), PACA_INIT( 85), PACA_INIT( 86), PACA_INIT( 87),
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PACA_INIT( 88), PACA_INIT( 89), PACA_INIT( 90), PACA_INIT( 91),
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PACA_INIT( 92), PACA_INIT( 93), PACA_INIT( 94), PACA_INIT( 95),
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PACA_INIT( 96), PACA_INIT( 97), PACA_INIT( 98), PACA_INIT( 99),
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PACA_INIT(100), PACA_INIT(101), PACA_INIT(102), PACA_INIT(103),
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PACA_INIT(104), PACA_INIT(105), PACA_INIT(106), PACA_INIT(107),
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PACA_INIT(108), PACA_INIT(109), PACA_INIT(110), PACA_INIT(111),
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PACA_INIT(112), PACA_INIT(113), PACA_INIT(114), PACA_INIT(115),
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PACA_INIT(116), PACA_INIT(117), PACA_INIT(118), PACA_INIT(119),
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PACA_INIT(120), PACA_INIT(121), PACA_INIT(122), PACA_INIT(123),
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PACA_INIT(124), PACA_INIT(125), PACA_INIT(126), PACA_INIT(127),
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#endif
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#endif
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#endif
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#endif
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#endif
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};
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EXPORT_SYMBOL(paca);
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