diff options
Diffstat (limited to 'arch/powerpc')
-rw-r--r-- | arch/powerpc/kernel/Makefile | 5 | ||||
-rw-r--r-- | arch/powerpc/kernel/cpu_setup_power4.S | 233 | ||||
-rw-r--r-- | arch/powerpc/kernel/firmware.c | 45 | ||||
-rw-r--r-- | arch/powerpc/kernel/ioctl32.c | 49 | ||||
-rw-r--r-- | arch/powerpc/kernel/paca.c | 143 |
5 files changed, 474 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index b3ae2993efb..103cb8128ef 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -4,6 +4,7 @@ ifeq ($(CONFIG_PPC64),y) EXTRA_CFLAGS += -mno-minimal-toc +CFLAGS_ioctl32.o += -Ifs/ endif ifeq ($(CONFIG_PPC32),y) CFLAGS_prom_init.o += -fPIC @@ -13,7 +14,9 @@ endif obj-y := semaphore.o cputable.o ptrace.o syscalls.o \ signal_32.o pmc.o obj-$(CONFIG_PPC64) += setup_64.o binfmt_elf32.o sys_ppc32.o \ - signal_64.o ptrace32.o systbl.o + signal_64.o ptrace32.o systbl.o \ + paca.o ioctl32.o cpu_setup_power4.o \ + firmware.o obj-$(CONFIG_ALTIVEC) += vecemu.o vector.o obj-$(CONFIG_POWER4) += idle_power4.o obj-$(CONFIG_PPC_OF) += of_device.o diff --git a/arch/powerpc/kernel/cpu_setup_power4.S b/arch/powerpc/kernel/cpu_setup_power4.S new file mode 100644 index 00000000000..cca942fe611 --- /dev/null +++ b/arch/powerpc/kernel/cpu_setup_power4.S @@ -0,0 +1,233 @@ +/* + * This file contains low level CPU setup functions. + * Copyright (C) 2003 Benjamin Herrenschmidt (benh@kernel.crashing.org) + * + * 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. + * + */ + +#include <linux/config.h> +#include <asm/processor.h> +#include <asm/page.h> +#include <asm/cputable.h> +#include <asm/ppc_asm.h> +#include <asm/asm-offsets.h> +#include <asm/cache.h> + +_GLOBAL(__970_cpu_preinit) + /* + * Do nothing if not running in HV mode + */ + mfmsr r0 + rldicl. r0,r0,4,63 + beqlr + + /* + * Deal only with PPC970 and PPC970FX. + */ + mfspr r0,SPRN_PVR + srwi r0,r0,16 + cmpwi r0,0x39 + beq 1f + cmpwi r0,0x3c + beq 1f + cmpwi r0,0x44 + bnelr +1: + + /* Make sure HID4:rm_ci is off before MMU is turned off, that large + * pages are enabled with HID4:61 and clear HID5:DCBZ_size and + * HID5:DCBZ32_ill + */ + li r0,0 + mfspr r3,SPRN_HID4 + rldimi r3,r0,40,23 /* clear bit 23 (rm_ci) */ + rldimi r3,r0,2,61 /* clear bit 61 (lg_pg_en) */ + sync + mtspr SPRN_HID4,r3 + isync + sync + mfspr r3,SPRN_HID5 + rldimi r3,r0,6,56 /* clear bits 56 & 57 (DCBZ*) */ + sync + mtspr SPRN_HID5,r3 + isync + sync + + /* Setup some basic HID1 features */ + mfspr r0,SPRN_HID1 + li r3,0x1200 /* enable i-fetch cacheability */ + sldi r3,r3,44 /* and prefetch */ + or r0,r0,r3 + mtspr SPRN_HID1,r0 + mtspr SPRN_HID1,r0 + isync + + /* Clear HIOR */ + li r0,0 + sync + mtspr SPRN_HIOR,0 /* Clear interrupt prefix */ + isync + blr + +_GLOBAL(__setup_cpu_power4) + blr + +_GLOBAL(__setup_cpu_be) + /* Set large page sizes LP=0: 16MB, LP=1: 64KB */ + addi r3, 0, 0 + ori r3, r3, HID6_LB + sldi r3, r3, 32 + nor r3, r3, r3 + mfspr r4, SPRN_HID6 + and r4, r4, r3 + addi r3, 0, 0x02000 + sldi r3, r3, 32 + or r4, r4, r3 + mtspr SPRN_HID6, r4 + blr + +_GLOBAL(__setup_cpu_ppc970) + mfspr r0,SPRN_HID0 + li r11,5 /* clear DOZE and SLEEP */ + rldimi r0,r11,52,8 /* set NAP and DPM */ + mtspr SPRN_HID0,r0 + mfspr r0,SPRN_HID0 + mfspr r0,SPRN_HID0 + mfspr r0,SPRN_HID0 + mfspr r0,SPRN_HID0 + mfspr r0,SPRN_HID0 + mfspr r0,SPRN_HID0 + sync + isync + blr + +/* Definitions for the table use to save CPU states */ +#define CS_HID0 0 +#define CS_HID1 8 +#define CS_HID4 16 +#define CS_HID5 24 +#define CS_SIZE 32 + + .data + .balign L1_CACHE_BYTES,0 +cpu_state_storage: + .space CS_SIZE + .balign L1_CACHE_BYTES,0 + .text + +/* Called in normal context to backup CPU 0 state. This + * does not include cache settings. This function is also + * called for machine sleep. This does not include the MMU + * setup, BATs, etc... but rather the "special" registers + * like HID0, HID1, HID4, etc... + */ +_GLOBAL(__save_cpu_setup) + /* Some CR fields are volatile, we back it up all */ + mfcr r7 + + /* Get storage ptr */ + LOADADDR(r5,cpu_state_storage) + + /* We only deal with 970 for now */ + mfspr r0,SPRN_PVR + srwi r0,r0,16 + cmpwi r0,0x39 + beq 1f + cmpwi r0,0x3c + beq 1f + cmpwi r0,0x44 + bne 2f + +1: /* Save HID0,1,4 and 5 */ + mfspr r3,SPRN_HID0 + std r3,CS_HID0(r5) + mfspr r3,SPRN_HID1 + std r3,CS_HID1(r5) + mfspr r3,SPRN_HID4 + std r3,CS_HID4(r5) + mfspr r3,SPRN_HID5 + std r3,CS_HID5(r5) + +2: + mtcr r7 + blr + +/* Called with no MMU context (typically MSR:IR/DR off) to + * restore CPU state as backed up by the previous + * function. This does not include cache setting + */ +_GLOBAL(__restore_cpu_setup) + /* Get storage ptr (FIXME when using anton reloc as we + * are running with translation disabled here + */ + LOADADDR(r5,cpu_state_storage) + + /* We only deal with 970 for now */ + mfspr r0,SPRN_PVR + srwi r0,r0,16 + cmpwi r0,0x39 + beq 1f + cmpwi r0,0x3c + beq 1f + cmpwi r0,0x44 + bnelr + +1: /* Before accessing memory, we make sure rm_ci is clear */ + li r0,0 + mfspr r3,SPRN_HID4 + rldimi r3,r0,40,23 /* clear bit 23 (rm_ci) */ + sync + mtspr SPRN_HID4,r3 + isync + sync + + /* Clear interrupt prefix */ + li r0,0 + sync + mtspr SPRN_HIOR,0 + isync + + /* Restore HID0 */ + ld r3,CS_HID0(r5) + sync + isync + mtspr SPRN_HID0,r3 + mfspr r3,SPRN_HID0 + mfspr r3,SPRN_HID0 + mfspr r3,SPRN_HID0 + mfspr r3,SPRN_HID0 + mfspr r3,SPRN_HID0 + mfspr r3,SPRN_HID0 + sync + isync + + /* Restore HID1 */ + ld r3,CS_HID1(r5) + sync + isync + mtspr SPRN_HID1,r3 + mtspr SPRN_HID1,r3 + sync + isync + + /* Restore HID4 */ + ld r3,CS_HID4(r5) + sync + isync + mtspr SPRN_HID4,r3 + sync + isync + + /* Restore HID5 */ + ld r3,CS_HID5(r5) + sync + isync + mtspr SPRN_HID5,r3 + sync + isync + blr + diff --git a/arch/powerpc/kernel/firmware.c b/arch/powerpc/kernel/firmware.c new file mode 100644 index 00000000000..65eae752a52 --- /dev/null +++ b/arch/powerpc/kernel/firmware.c @@ -0,0 +1,45 @@ +/* + * Extracted from cputable.c + * + * Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org) + * + * Modifications for ppc64: + * Copyright (C) 2003 Dave Engebretsen <engebret@us.ibm.com> + * Copyright (C) 2005 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. + */ + +#include <linux/config.h> + +#include <asm/firmware.h> + +unsigned long ppc64_firmware_features; + +#ifdef CONFIG_PPC_PSERIES +firmware_feature_t firmware_features_table[FIRMWARE_MAX_FEATURES] = { + {FW_FEATURE_PFT, "hcall-pft"}, + {FW_FEATURE_TCE, "hcall-tce"}, + {FW_FEATURE_SPRG0, "hcall-sprg0"}, + {FW_FEATURE_DABR, "hcall-dabr"}, + {FW_FEATURE_COPY, "hcall-copy"}, + {FW_FEATURE_ASR, "hcall-asr"}, + {FW_FEATURE_DEBUG, "hcall-debug"}, + {FW_FEATURE_PERF, "hcall-perf"}, + {FW_FEATURE_DUMP, "hcall-dump"}, + {FW_FEATURE_INTERRUPT, "hcall-interrupt"}, + {FW_FEATURE_MIGRATE, "hcall-migrate"}, + {FW_FEATURE_PERFMON, "hcall-perfmon"}, + {FW_FEATURE_CRQ, "hcall-crq"}, + {FW_FEATURE_VIO, "hcall-vio"}, + {FW_FEATURE_RDMA, "hcall-rdma"}, + {FW_FEATURE_LLAN, "hcall-lLAN"}, + {FW_FEATURE_BULK, "hcall-bulk"}, + {FW_FEATURE_XDABR, "hcall-xdabr"}, + {FW_FEATURE_MULTITCE, "hcall-multi-tce"}, + {FW_FEATURE_SPLPAR, "hcall-splpar"}, +}; +#endif diff --git a/arch/powerpc/kernel/ioctl32.c b/arch/powerpc/kernel/ioctl32.c new file mode 100644 index 00000000000..3fa6a93adbd --- /dev/null +++ b/arch/powerpc/kernel/ioctl32.c @@ -0,0 +1,49 @@ +/* + * ioctl32.c: Conversion between 32bit and 64bit native ioctls. + * + * Based on sparc64 ioctl32.c by: + * + * Copyright (C) 1997-2000 Jakub Jelinek (jakub@redhat.com) + * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be) + * + * ppc64 changes: + * + * Copyright (C) 2000 Ken Aaker (kdaaker@rchland.vnet.ibm.com) + * Copyright (C) 2001 Anton Blanchard (antonb@au.ibm.com) + * + * These routines maintain argument size conversion between 32bit and 64bit + * ioctls. + * + * 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. + */ + +#define INCLUDES +#include "compat_ioctl.c" +#include <linux/syscalls.h> + +#define CODE +#include "compat_ioctl.c" + +#define HANDLE_IOCTL(cmd,handler) { cmd, (ioctl_trans_handler_t)handler, NULL }, +#define COMPATIBLE_IOCTL(cmd) HANDLE_IOCTL(cmd,sys_ioctl) + +#define IOCTL_TABLE_START \ + struct ioctl_trans ioctl_start[] = { +#define IOCTL_TABLE_END \ + }; + +IOCTL_TABLE_START +#include <linux/compat_ioctl.h> +#define DECLARES +#include "compat_ioctl.c" + +/* Little p (/dev/rtc, /dev/envctrl, etc.) */ +COMPATIBLE_IOCTL(_IOR('p', 20, int[7])) /* RTCGET */ +COMPATIBLE_IOCTL(_IOW('p', 21, int[7])) /* RTCSET */ + +IOCTL_TABLE_END + +int ioctl_table_size = ARRAY_SIZE(ioctl_start); diff --git a/arch/powerpc/kernel/paca.c b/arch/powerpc/kernel/paca.c new file mode 100644 index 00000000000..179948eb058 --- /dev/null +++ b/arch/powerpc/kernel/paca.c @@ -0,0 +1,143 @@ +/* + * c 2001 PPC 64 Team, IBM Corp + * + * 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. + */ + +#include <linux/config.h> +#include <linux/types.h> +#include <linux/threads.h> +#include <linux/module.h> + +#include <asm/processor.h> +#include <asm/ptrace.h> +#include <asm/page.h> + +#include <asm/lppaca.h> +#include <asm/iseries/it_lp_queue.h> +#include <asm/paca.h> + +static union { + struct systemcfg data; + u8 page[PAGE_SIZE]; +} systemcfg_store __attribute__((__section__(".data.page.aligned"))); +struct systemcfg *systemcfg = &systemcfg_store.data; +EXPORT_SYMBOL(systemcfg); + + +/* This symbol is provided by the linker - let it fill in the paca + * field correctly */ +extern unsigned long __toc_start; + +/* The Paca is an array with one entry per processor. Each contains an + * lppaca, which contains the information shared between the + * hypervisor and Linux. Each also contains an ItLpRegSave area which + * is used by the hypervisor to save registers. + * On systems with hardware multi-threading, there are two threads + * per processor. The Paca array must contain an entry for each thread. + * The VPD Areas will give a max logical processors = 2 * max physical + * processors. The processor VPD array needs one entry per physical + * processor (not thread). + */ +#define PACA_INIT_COMMON(number, start, asrr, asrv) \ + .lock_token = 0x8000, \ + .paca_index = (number), /* Paca Index */ \ + .default_decr = 0x00ff0000, /* Initial Decr */ \ + .kernel_toc = (unsigned long)(&__toc_start) + 0x8000UL, \ + .stab_real = (asrr), /* Real pointer to segment table */ \ + .stab_addr = (asrv), /* Virt pointer to segment table */ \ + .cpu_start = (start), /* Processor start */ \ + .hw_cpu_id = 0xffff, \ + .lppaca = { \ + .desc = 0xd397d781, /* "LpPa" */ \ + .size = sizeof(struct lppaca), \ + .dyn_proc_status = 2, \ + .decr_val = 0x00ff0000, \ + .fpregs_in_use = 1, \ + .end_of_quantum = 0xfffffffffffffffful, \ + .slb_count = 64, \ + .vmxregs_in_use = 0, \ + }, \ + +#ifdef CONFIG_PPC_ISERIES +#define PACA_INIT_ISERIES(number) \ + .lppaca_ptr = &paca[number].lppaca, \ + .reg_save_ptr = &paca[number].reg_save, \ + .reg_save = { \ + .xDesc = 0xd397d9e2, /* "LpRS" */ \ + .xSize = sizeof(struct ItLpRegSave) \ + } + +#define PACA_INIT(number) \ +{ \ + PACA_INIT_COMMON(number, 0, 0, 0) \ + PACA_INIT_ISERIES(number) \ +} + +#define BOOTCPU_PACA_INIT(number) \ +{ \ + PACA_INIT_COMMON(number, 1, 0, (u64)&initial_stab) \ + PACA_INIT_ISERIES(number) \ +} + +#else +#define PACA_INIT(number) \ +{ \ + PACA_INIT_COMMON(number, 0, 0, 0) \ +} + +#define BOOTCPU_PACA_INIT(number) \ +{ \ + PACA_INIT_COMMON(number, 1, STAB0_PHYS_ADDR, (u64)&initial_stab) \ +} +#endif + +struct paca_struct paca[] = { + BOOTCPU_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); |