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