X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Fpowerpc%2Fkernel%2Fpaca.c;h=c9bf17eec31b1d14c5fd144b18e372e05e6b5868;hb=860da5e578c25d1ab4528c0d1ad13f9969e3490f;hp=c68741fed14bbb356ac02aaf5cf86a064a3c6ef1;hpb=c4e00fac42f268ed0a547cdd1d12bb8399864040;p=linux-2.6-omap-h63xx.git diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c index c68741fed14..c9bf17eec31 100644 --- a/arch/powerpc/kernel/paca.c +++ b/arch/powerpc/kernel/paca.c @@ -7,30 +7,24 @@ * 2 of the License, or (at your option) any later version. */ -#include #include #include -#include -#include -#include #include -#include #include - /* This symbol is provided by the linker - let it fill in the paca * field correctly */ extern unsigned long __toc_start; /* - * iSeries structure which the hypervisor knows about - this structure + * The structure which the hypervisor knows about - this structure * should not cross a page boundary. The vpa_init/register_vpa call * is now known to fail if the lppaca structure crosses a page - * boundary. The lppaca is also used on POWER5 pSeries boxes. The - * lppaca is 640 bytes long, and cannot readily change since the - * hypervisor knows its layout, so a 1kB alignment will suffice to - * ensure that it doesn't cross a page boundary. + * boundary. The lppaca is also used on legacy iSeries and POWER5 + * pSeries boxes. The lppaca is 640 bytes long, and cannot readily + * change since the hypervisor knows its layout, so a 1kB alignment + * will suffice to ensure that it doesn't cross a page boundary. */ struct lppaca lppaca[] = { [0 ... (NR_CPUS-1)] = { @@ -45,6 +39,17 @@ struct lppaca lppaca[] = { }, }; +/* + * 3 persistent SLBs are registered here. The buffer will be zero + * initially, hence will all be invaild until we actually write them. + */ +struct slb_shadow slb_shadow[] __cacheline_aligned = { + [0 ... (NR_CPUS-1)] = { + .persistent = SLB_NUM_BOLTED, + .buffer_length = sizeof(struct slb_shadow), + }, +}; + /* The Paca is an array with one entry per processor. Each contains an * lppaca, which contains the information shared between the * hypervisor and Linux. @@ -54,74 +59,29 @@ struct lppaca lppaca[] = { * processors. The processor VPD array needs one entry per physical * processor (not thread). */ -#define PACA_INIT_COMMON(number) \ - .lppaca_ptr = &lppaca[number], \ - .lock_token = 0x8000, \ - .paca_index = (number), /* Paca Index */ \ - .kernel_toc = (unsigned long)(&__toc_start) + 0x8000UL, \ - .hw_cpu_id = 0xffff, +struct paca_struct paca[NR_CPUS]; +EXPORT_SYMBOL(paca); -#ifdef CONFIG_PPC_ISERIES -#define PACA_INIT_ISERIES(number) \ - .reg_save_ptr = &iseries_reg_save[number], +void __init initialise_pacas(void) +{ + int cpu; -#define PACA_INIT(number) \ -{ \ - PACA_INIT_COMMON(number) \ - PACA_INIT_ISERIES(number) \ -} + /* The TOC register (GPR2) points 32kB into the TOC, so that 64kB + * of the TOC can be addressed using a single machine instruction. + */ + unsigned long kernel_toc = (unsigned long)(&__toc_start) + 0x8000UL; -#else -#define PACA_INIT(number) \ -{ \ - PACA_INIT_COMMON(number) \ -} + /* Can't use for_each_*_cpu, as they aren't functional yet */ + for (cpu = 0; cpu < NR_CPUS; cpu++) { + struct paca_struct *new_paca = &paca[cpu]; -#endif + new_paca->lppaca_ptr = &lppaca[cpu]; + new_paca->lock_token = 0x8000; + new_paca->paca_index = cpu; + new_paca->kernel_toc = kernel_toc; + new_paca->hw_cpu_id = 0xffff; + new_paca->slb_shadow_ptr = &slb_shadow[cpu]; + new_paca->__current = &init_task; -struct paca_struct paca[] = { - PACA_INIT(0), -#if NR_CPUS > 1 - PACA_INIT( 1), PACA_INIT( 2), PACA_INIT( 3), -#if NR_CPUS > 4 - PACA_INIT( 4), PACA_INIT( 5), PACA_INIT( 6), PACA_INIT( 7), -#if NR_CPUS > 8 - PACA_INIT( 8), PACA_INIT( 9), PACA_INIT( 10), PACA_INIT( 11), - PACA_INIT( 12), PACA_INIT( 13), PACA_INIT( 14), PACA_INIT( 15), - PACA_INIT( 16), PACA_INIT( 17), PACA_INIT( 18), PACA_INIT( 19), - PACA_INIT( 20), PACA_INIT( 21), PACA_INIT( 22), PACA_INIT( 23), - PACA_INIT( 24), PACA_INIT( 25), PACA_INIT( 26), PACA_INIT( 27), - PACA_INIT( 28), PACA_INIT( 29), PACA_INIT( 30), PACA_INIT( 31), -#if NR_CPUS > 32 - PACA_INIT( 32), PACA_INIT( 33), PACA_INIT( 34), PACA_INIT( 35), - PACA_INIT( 36), PACA_INIT( 37), PACA_INIT( 38), PACA_INIT( 39), - PACA_INIT( 40), PACA_INIT( 41), PACA_INIT( 42), PACA_INIT( 43), - PACA_INIT( 44), PACA_INIT( 45), PACA_INIT( 46), PACA_INIT( 47), - PACA_INIT( 48), PACA_INIT( 49), PACA_INIT( 50), PACA_INIT( 51), - PACA_INIT( 52), PACA_INIT( 53), PACA_INIT( 54), PACA_INIT( 55), - PACA_INIT( 56), PACA_INIT( 57), PACA_INIT( 58), PACA_INIT( 59), - PACA_INIT( 60), PACA_INIT( 61), PACA_INIT( 62), PACA_INIT( 63), -#if NR_CPUS > 64 - PACA_INIT( 64), PACA_INIT( 65), PACA_INIT( 66), PACA_INIT( 67), - PACA_INIT( 68), PACA_INIT( 69), PACA_INIT( 70), PACA_INIT( 71), - PACA_INIT( 72), PACA_INIT( 73), PACA_INIT( 74), PACA_INIT( 75), - PACA_INIT( 76), PACA_INIT( 77), PACA_INIT( 78), PACA_INIT( 79), - PACA_INIT( 80), PACA_INIT( 81), PACA_INIT( 82), PACA_INIT( 83), - PACA_INIT( 84), PACA_INIT( 85), PACA_INIT( 86), PACA_INIT( 87), - PACA_INIT( 88), PACA_INIT( 89), PACA_INIT( 90), PACA_INIT( 91), - PACA_INIT( 92), PACA_INIT( 93), PACA_INIT( 94), PACA_INIT( 95), - PACA_INIT( 96), PACA_INIT( 97), PACA_INIT( 98), PACA_INIT( 99), - PACA_INIT(100), PACA_INIT(101), PACA_INIT(102), PACA_INIT(103), - PACA_INIT(104), PACA_INIT(105), PACA_INIT(106), PACA_INIT(107), - PACA_INIT(108), PACA_INIT(109), PACA_INIT(110), PACA_INIT(111), - PACA_INIT(112), PACA_INIT(113), PACA_INIT(114), PACA_INIT(115), - PACA_INIT(116), PACA_INIT(117), PACA_INIT(118), PACA_INIT(119), - PACA_INIT(120), PACA_INIT(121), PACA_INIT(122), PACA_INIT(123), - PACA_INIT(124), PACA_INIT(125), PACA_INIT(126), PACA_INIT(127), -#endif -#endif -#endif -#endif -#endif -}; -EXPORT_SYMBOL(paca); + } +}