/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. */ /* * Cross Partition (XP) uv-based functions. * * Architecture specific implementation of common functions. * */ #include <linux/device.h> #include <asm/uv/uv_hub.h> #if defined CONFIG_X86_64 #include <asm/uv/bios.h> #elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV #include <asm/sn/sn_sal.h> #endif #include "../sgi-gru/grukservices.h" #include "xp.h" /* * Convert a virtual memory address to a physical memory address. */ static unsigned long xp_pa_uv(void *addr) { return uv_gpa(addr); } static enum xp_retval xp_remote_memcpy_uv(unsigned long dst_gpa, const unsigned long src_gpa, size_t len) { int ret; ret = gru_copy_gpa(dst_gpa, src_gpa, len); if (ret == 0) return xpSuccess; dev_err(xp, "gru_copy_gpa() failed, dst_gpa=0x%016lx src_gpa=0x%016lx " "len=%ld\n", dst_gpa, src_gpa, len); return xpGruCopyError; } static int xp_cpu_to_nasid_uv(int cpuid) { /* ??? Is this same as sn2 nasid in mach/part bitmaps set up by SAL? */ return UV_PNODE_TO_NASID(uv_cpu_to_pnode(cpuid)); } static enum xp_retval xp_expand_memprotect_uv(unsigned long phys_addr, unsigned long size) { int ret; #if defined CONFIG_X86_64 ret = uv_bios_change_memprotect(phys_addr, size, UV_MEMPROT_ALLOW_RW); if (ret != BIOS_STATUS_SUCCESS) { dev_err(xp, "uv_bios_change_memprotect(,, " "UV_MEMPROT_ALLOW_RW) failed, ret=%d\n", ret); return xpBiosError; } #elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV u64 nasid_array; ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_1, &nasid_array); if (ret != 0) { dev_err(xp, "sn_change_memprotect(,, " "SN_MEMPROT_ACCESS_CLASS_1,) failed ret=%d\n", ret); return xpSalError; } #else #error not a supported configuration #endif return xpSuccess; } static enum xp_retval xp_restrict_memprotect_uv(unsigned long phys_addr, unsigned long size) { int ret; #if defined CONFIG_X86_64 ret = uv_bios_change_memprotect(phys_addr, size, UV_MEMPROT_RESTRICT_ACCESS); if (ret != BIOS_STATUS_SUCCESS) { dev_err(xp, "uv_bios_change_memprotect(,, " "UV_MEMPROT_RESTRICT_ACCESS) failed, ret=%d\n", ret); return xpBiosError; } #elif defined CONFIG_IA64_GENERIC || defined CONFIG_IA64_SGI_UV u64 nasid_array; ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_0, &nasid_array); if (ret != 0) { dev_err(xp, "sn_change_memprotect(,, " "SN_MEMPROT_ACCESS_CLASS_0,) failed ret=%d\n", ret); return xpSalError; } #else #error not a supported configuration #endif return xpSuccess; } enum xp_retval xp_init_uv(void) { BUG_ON(!is_uv()); xp_max_npartitions = XP_MAX_NPARTITIONS_UV; xp_partition_id = sn_partition_id; xp_region_size = sn_region_size; xp_pa = xp_pa_uv; xp_remote_memcpy = xp_remote_memcpy_uv; xp_cpu_to_nasid = xp_cpu_to_nasid_uv; xp_expand_memprotect = xp_expand_memprotect_uv; xp_restrict_memprotect = xp_restrict_memprotect_uv; return xpSuccess; } void xp_exit_uv(void) { BUG_ON(!is_uv()); }