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 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
22 * Use is subject to license terms.
23 */
24
25 #pragma ident "%Z%%M% %I% %E% SMI"
26
27 /*
28 * Given a unum including an offset calculate the associated system
29 * address. This may be different to when the original PA to unum
30 * calculation took place if interleave etc has changed.
31 */
32
33 #include <sys/errno.h>
34 #include <sys/types.h>
35 #include <sys/mc.h>
36
37 #include <mcamd_api.h>
38 #include <mcamd_err.h>
39
40 /*
41 * The submitted unum must have the MC and DIMM numbers and an offset.
42 * Any cs info it has will not be used - we will reconstruct cs info.
43 * This is because cs is not in the topology used for diagnosis.
44 */
45 int
mcamd_unumtopa(struct mcamd_hdl * hdl,mcamd_node_t * root,mc_unum_t * unump,uint64_t * pa)46 mcamd_unumtopa(struct mcamd_hdl *hdl, mcamd_node_t *root, mc_unum_t *unump,
47 uint64_t *pa)
48 {
49 mcamd_node_t *mc, *dimm;
50 uint64_t num, holesz;
51
52 mcamd_dprintf(hdl, MCAMD_DBG_FLOW, "mcamd_unumtopa: chip %d "
53 "mc %d dimm %d offset 0x%llx\n", unump->unum_chip, unump->unum_mc,
54 unump->unum_dimms[0], unump->unum_offset);
55
56 if (!MCAMD_RC_OFFSET_VALID(unump->unum_offset)) {
57 mcamd_dprintf(hdl, MCAMD_DBG_FLOW, "mcamd_unumtopa: offset "
58 "invalid\n");
59 return (mcamd_set_errno(hdl, EMCAMD_NOADDR));
60 }
61
62 /*
63 * Search current config for a MC number matching the chip in the
64 * unum.
65 */
66 for (mc = mcamd_mc_next(hdl, root, NULL); mc != NULL;
67 mc = mcamd_mc_next(hdl, root, mc)) {
68 if (!mcamd_get_numprops(hdl,
69 mc, MCAMD_PROP_NUM, &num,
70 mc, MCAMD_PROP_DRAMHOLE_SIZE, &holesz,
71 NULL)) {
72 mcamd_dprintf(hdl, MCAMD_DBG_ERR, "mcamd_unumtopa: "
73 "failed to lookup num, dramhole for MC 0x%p\n", mc);
74 return (mcamd_set_errno(hdl, EMCAMD_TREEINVALID));
75 }
76 if (num == unump->unum_chip)
77 break;
78 }
79 if (mc == NULL) {
80 mcamd_dprintf(hdl, MCAMD_DBG_FLOW, "mcamd_unumtopa; "
81 "no match for MC %d\n", unump->unum_chip);
82 return (mcamd_set_errno(hdl, EMCAMD_NOADDR));
83 }
84
85 /*
86 * Search DIMMs of this MC. We can match against the
87 * first dimm in the unum - if there is more than one they all
88 * share the same chip-selects anyway and the pa we will resolve
89 * to is not finer grained than the 128-bits of a dimm pair.
90 */
91 for (dimm = mcamd_dimm_next(hdl, mc, NULL); dimm != NULL;
92 dimm = mcamd_dimm_next(hdl, mc, dimm)) {
93 if (!mcamd_get_numprop(hdl, dimm, MCAMD_PROP_NUM, &num)) {
94 mcamd_dprintf(hdl, MCAMD_DBG_ERR, "mcamd_unumtopa: "
95 "failed to lookup num for dimm 0xx%p\n",
96 dimm);
97 return (mcamd_set_errno(hdl, EMCAMD_TREEINVALID));
98 }
99 if (num == unump->unum_dimms[0])
100 break;
101 }
102 if (dimm == NULL) {
103 mcamd_dprintf(hdl, MCAMD_DBG_FLOW, "mcamd_unumtopa; "
104 "no match for dimm %d cs %d on MC %d\n",
105 unump->unum_dimms[0], unump->unum_cs, unump->unum_chip);
106 return (mcamd_set_errno(hdl, EMCAMD_NOADDR));
107 }
108
109 mcamd_dprintf(hdl, MCAMD_DBG_FLOW, "mcamd_unumtopa: matched "
110 "mc 0x%p dimm 0x%p; resolving offset 0x%llx\n",
111 mc, dimm, unump->unum_offset);
112
113 if (mc_offset_to_pa(hdl, mc, dimm, unump->unum_offset, pa) < 0) {
114 mcamd_dprintf(hdl, MCAMD_DBG_FLOW, "mcamd_unumtopa: "
115 "mc_offset_to_pa failed: %s\n", mcamd_errmsg(hdl));
116 return (-1); /* errno already set */
117 }
118
119 mcamd_dprintf(hdl, MCAMD_DBG_FLOW, "mcamd_unumtopa: "
120 "mc_offset_to_pa succeeded and returned pa=0x%llx: %\n",
121 *pa);
122
123 /*
124 * If this MC has a dram address hole just below 4GB then we must
125 * hoist all address from the hole start upwards by the hole size
126 */
127 if (holesz != 0) {
128 if (*pa >= 0x100000000 - holesz)
129 *pa += holesz;
130 mcamd_dprintf(hdl, MCAMD_DBG_FLOW, "mcamd_untopa: hoist "
131 "above dram hole of size 0x%llx to get pa=0x%llx",
132 holesz, *pa);
133 }
134
135 return (0);
136 }
137