diff options
| -rw-r--r-- | arch/powerpc/kernel/asm-offsets.c | 6 | ||||
| -rw-r--r-- | arch/powerpc/platforms/iseries/exception.S | 12 | ||||
| -rw-r--r-- | arch/powerpc/platforms/iseries/lpardata.c | 39 | ||||
| -rw-r--r-- | include/asm-powerpc/iseries/alpaca.h | 31 |
4 files changed, 84 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c index e932b43bd82..292c6d8db0e 100644 --- a/arch/powerpc/kernel/asm-offsets.c +++ b/arch/powerpc/kernel/asm-offsets.c @@ -44,6 +44,9 @@ #include <asm/mmu.h> #include <asm/hvcall.h> #endif +#ifdef CONFIG_PPC_ISERIES +#include <asm/iseries/alpaca.h> +#endif #define DEFINE(sym, val) \ asm volatile("\n->" #sym " %0 " #val : : "i" (val)) @@ -321,6 +324,9 @@ int main(void) DEFINE(PAGE_OFFSET_VSID, KERNEL_VSID(PAGE_OFFSET)); DEFINE(VMALLOC_START_ESID, GET_ESID(VMALLOC_START)); DEFINE(VMALLOC_START_VSID, KERNEL_VSID(VMALLOC_START)); + + /* alpaca */ + DEFINE(ALPACA_SIZE, sizeof(struct alpaca)); #endif DEFINE(PGD_TABLE_SIZE, PGD_TABLE_SIZE); diff --git a/arch/powerpc/platforms/iseries/exception.S b/arch/powerpc/platforms/iseries/exception.S index 5381038f088..c775cd4b3d6 100644 --- a/arch/powerpc/platforms/iseries/exception.S +++ b/arch/powerpc/platforms/iseries/exception.S @@ -38,11 +38,19 @@ .globl system_reset_iSeries system_reset_iSeries: - mfspr r13,SPRN_SPRG3 /* Get paca address */ + mfspr r13,SPRN_SPRG3 /* Get alpaca address */ + LOAD_REG_IMMEDIATE(r23, alpaca) + li r0,ALPACA_SIZE + sub r23,r13,r23 + divdu r23,r23,r0 /* r23 has cpu number */ + LOAD_REG_IMMEDIATE(r13, paca) + mulli r0,r23,PACA_SIZE + add r13,r13,r0 + mtspr SPRN_SPRG3,r13 /* Save it away for the future */ mfmsr r24 ori r24,r24,MSR_RI mtmsrd r24 /* RI on */ - lhz r24,PACAPACAINDEX(r13) /* Get processor # */ + mr r24,r23 cmpwi 0,r24,0 /* Are we processor 0? */ bne 1f b .__start_initialization_iSeries /* Start up the first processor */ diff --git a/arch/powerpc/platforms/iseries/lpardata.c b/arch/powerpc/platforms/iseries/lpardata.c index 8162049bb04..dc8470850a8 100644 --- a/arch/powerpc/platforms/iseries/lpardata.c +++ b/arch/powerpc/platforms/iseries/lpardata.c @@ -18,6 +18,7 @@ #include <asm/paca.h> #include <asm/iseries/lpar_map.h> #include <asm/iseries/it_lp_queue.h> +#include <asm/iseries/alpaca.h> #include "naca.h" #include "vpd_areas.h" @@ -159,6 +160,40 @@ struct SpCommArea xSpCommArea = { .xFormat = 1, }; +#define ALPACA_INIT(number) \ +{ \ + .lppaca_ptr = &lppaca[number], \ + .reg_save_ptr = &iseries_reg_save[number], \ +} + +struct alpaca alpaca[] = { + ALPACA_INIT( 0), +#if NR_CPUS > 1 + ALPACA_INIT( 1), ALPACA_INIT( 2), ALPACA_INIT( 3), +#if NR_CPUS > 4 + ALPACA_INIT( 4), ALPACA_INIT( 5), ALPACA_INIT( 6), ALPACA_INIT( 7), +#if NR_CPUS > 8 + ALPACA_INIT( 8), ALPACA_INIT( 9), ALPACA_INIT(10), ALPACA_INIT(11), + ALPACA_INIT(12), ALPACA_INIT(13), ALPACA_INIT(14), ALPACA_INIT(15), + ALPACA_INIT(16), ALPACA_INIT(17), ALPACA_INIT(18), ALPACA_INIT(19), + ALPACA_INIT(20), ALPACA_INIT(21), ALPACA_INIT(22), ALPACA_INIT(23), + ALPACA_INIT(24), ALPACA_INIT(25), ALPACA_INIT(26), ALPACA_INIT(27), + ALPACA_INIT(28), ALPACA_INIT(29), ALPACA_INIT(30), ALPACA_INIT(31), +#if NR_CPUS > 32 + ALPACA_INIT(32), ALPACA_INIT(33), ALPACA_INIT(34), ALPACA_INIT(35), + ALPACA_INIT(36), ALPACA_INIT(37), ALPACA_INIT(38), ALPACA_INIT(39), + ALPACA_INIT(40), ALPACA_INIT(41), ALPACA_INIT(42), ALPACA_INIT(43), + ALPACA_INIT(44), ALPACA_INIT(45), ALPACA_INIT(46), ALPACA_INIT(47), + ALPACA_INIT(48), ALPACA_INIT(49), ALPACA_INIT(50), ALPACA_INIT(51), + ALPACA_INIT(52), ALPACA_INIT(53), ALPACA_INIT(54), ALPACA_INIT(55), + ALPACA_INIT(56), ALPACA_INIT(57), ALPACA_INIT(58), ALPACA_INIT(59), + ALPACA_INIT(60), ALPACA_INIT(61), ALPACA_INIT(62), ALPACA_INIT(63), +#endif +#endif +#endif +#endif +}; + /* The LparMap data is now located at offset 0x6000 in head.S * It was put there so that the HvReleaseData could address it * with a 32-bit offset as required by the iSeries hypervisor @@ -185,7 +220,7 @@ struct ItVpdAreas itVpdAreas = { .xSlicVpdLens = { /* VPD lengths */ 0,0,0, /* 0 - 2 */ sizeof(xItExtVpdPanel), /* 3 Extended VPD */ - sizeof(struct paca_struct), /* 4 length of Paca */ + sizeof(struct alpaca), /* 4 length of (fake) Paca */ 0, /* 5 */ sizeof(struct ItIplParmsReal),/* 6 length of IPL parms */ 26992, /* 7 length of MS VPD */ @@ -203,7 +238,7 @@ struct ItVpdAreas itVpdAreas = { .xSlicVpdAdrs = { /* VPD addresses */ 0,0,0, /* 0 - 2 */ &xItExtVpdPanel, /* 3 Extended VPD */ - &paca[0], /* 4 first Paca */ + &alpaca[0], /* 4 first (fake) Paca */ 0, /* 5 */ &xItIplParmsReal, /* 6 IPL parms */ &xMsVpd, /* 7 MS Vpd */ diff --git a/include/asm-powerpc/iseries/alpaca.h b/include/asm-powerpc/iseries/alpaca.h new file mode 100644 index 00000000000..26fc081cb84 --- /dev/null +++ b/include/asm-powerpc/iseries/alpaca.h @@ -0,0 +1,31 @@ +/* + * Copyright © 2008 Stephen Rothwell IBM Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#ifndef _ASM_POWERPC_ISERIES_ALPACA_H +#define _ASM_POWERPC_ISERIES_ALPACA_H + +/* + * This is the part of the paca that the iSeries hypervisor + * needs to be statically initialised. Immediately after boot + * we switch to the normal Linux paca. + */ +struct alpaca { + struct lppaca *lppaca_ptr; /* Pointer to LpPaca for PLIC */ + void *reg_save_ptr; /* Pointer to LpRegSave for PLIC */ +}; + +#endif /* _ASM_POWERPC_ISERIES_ALPACA_H */ |