1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include <sys/types.h> 29 #include <sys/serengeti.h> 30 #include <sys/errno.h> 31 #include <sys/systm.h> 32 #include <sys/cmn_err.h> 33 #include <sys/cheetahregs.h> 34 #include <sys/cpuvar.h> 35 36 /* 37 * When an ECC error occurs on an E$ DIMM, the error handling code requests a 38 * unum to provide a human-readable physical location to the part that 39 * experienced the error. 40 * 41 * Previously, on Serengeti and LW8, a prom call was made to get this 42 * information. However, calling COBP to do a simple string format is 43 * inefficient. All the necessary information is now kept here. 44 * 45 * Since this data is now kept in two places (COBP and here), care must be 46 * taken so that the two locations are kept the same. Any changes to the 47 * jnumber array will require a change to COBP code so that the two arrays 48 * match. Any changes to the unum string format will require changes in both 49 * the COBP code (to match the code here) and plat_ecc_unum.c (to read the 50 * new format). These changes should not be necessary, except to reflect a 51 * new cpu or board type. 52 */ 53 54 /* 55 * The following array holds the jnumbers for Ecache DIMMs. The first index 56 * is the proc position on the board (0 through 3) and the second index is 57 * the DIMM number (0 or 1). 58 */ 59 static int sg_j_number[SG_MAX_CMPS_PER_BD][SG_NUM_ECACHE_DIMMS_PER_CPU] = { 60 { 4400, 4300 }, 61 { 5400, 5300 }, 62 { 6400, 6300 }, 63 { 7400, 7300 } 64 }; 65 66 /* 67 * Generate the unum for the specified cpuid and physical address. Put the 68 * unum in buf, which is of size buflen. Return the length of the string in 69 * lenp. 70 * 71 * Return 0 if successful, and an error number otherwise. 72 */ 73 int 74 sg_get_ecacheunum(int cpuid, uint64_t physaddr, char *buf, uint_t buflen, 75 int *lenp) 76 { 77 int node = SG_PORTID_TO_NODEID(cpuid); 78 int board = SG_CPU_BD_PORTID_TO_BD_NUM(cpuid); 79 int proc = SG_PORTID_TO_CPU_POSN(cpuid); 80 int dimm; 81 82 /* 83 * node and dimm will always be valid. board and proc may be -1 if 84 * an invalid cpuid is passed in. 85 */ 86 if ((board == -1) || (proc == -1)) { 87 return (EINVAL); 88 } 89 90 /* Find the DIMM number (0 or 1) based on the value of physaddr bit 4 */ 91 if (IS_PANTHER(cpunodes[CPU->cpu_id].implementation) || 92 IS_JAGUAR(cpunodes[CPU->cpu_id].implementation)) 93 dimm = (physaddr & SG_ECACHE_DIMM_MASK) ? 0 : 1; 94 else 95 dimm = (physaddr & SG_ECACHE_DIMM_MASK) ? 1 : 0; 96 97 *lenp = snprintf(buf, buflen, "/N%d/SB%d/P%d/E%d J%d", 98 node, board, proc, dimm, sg_j_number[proc][dimm]); 99 100 return (0); 101 } 102