1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved. 7 */ 8 9 /* 10 * Cross Partition (XP) uv-based functions. 11 * 12 * Architecture specific implementation of common functions. 13 * 14 */ 15 16 #include <linux/device.h> 17 #include <asm/uv/uv_hub.h> 18 #include "../sgi-gru/grukservices.h" 19 #include "xp.h" 20 21 /* 22 * Convert a virtual memory address to a physical memory address. 23 */ 24 static unsigned long 25 xp_pa_uv(void *addr) 26 { 27 return uv_gpa(addr); 28 } 29 30 static enum xp_retval 31 xp_remote_memcpy_uv(unsigned long dst_gpa, const unsigned long src_gpa, 32 size_t len) 33 { 34 int ret; 35 36 ret = gru_copy_gpa(dst_gpa, src_gpa, len); 37 if (ret == 0) 38 return xpSuccess; 39 40 dev_err(xp, "gru_copy_gpa() failed, dst_gpa=0x%016lx src_gpa=0x%016lx " 41 "len=%ld\n", dst_gpa, src_gpa, len); 42 return xpGruCopyError; 43 } 44 45 static int 46 xp_cpu_to_nasid_uv(int cpuid) 47 { 48 /* ??? Is this same as sn2 nasid in mach/part bitmaps set up by SAL? */ 49 return UV_PNODE_TO_NASID(uv_cpu_to_pnode(cpuid)); 50 } 51 52 enum xp_retval 53 xp_init_uv(void) 54 { 55 BUG_ON(!is_uv()); 56 57 xp_max_npartitions = XP_MAX_NPARTITIONS_UV; 58 xp_partition_id = 0; /* !!! not correct value */ 59 xp_region_size = 0; /* !!! not correct value */ 60 61 xp_pa = xp_pa_uv; 62 xp_remote_memcpy = xp_remote_memcpy_uv; 63 xp_cpu_to_nasid = xp_cpu_to_nasid_uv; 64 65 return xpSuccess; 66 } 67 68 void 69 xp_exit_uv(void) 70 { 71 BUG_ON(!is_uv()); 72 } 73