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, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 /*
30 * sun4v root nexus driver
31 */
32 #include <sys/conf.h>
33 #include <sys/cpuvar.h>
34 #include <sys/ivintr.h>
35 #include <sys/intreg.h>
36 #include <sys/ddi_subrdefs.h>
37 #include <sys/sunndi.h>
38 #include <sys/async.h>
39
40 /* Useful debugging Stuff */
41 #include <sys/nexusdebug.h>
42 #define ROOTNEX_MAP_DEBUG 0x1
43 #define ROOTNEX_INTR_DEBUG 0x2
44
45 extern uint_t root_phys_addr_lo_mask;
46 extern int rootnex_name_child(dev_info_t *child, char *name, int namelen);
47 extern int rootnex_ctl_uninitchild(dev_info_t *dip);
48
49 uint_t root_phys_addr_hi_mask = 0xfffffff;
50
51 #define BUS_ADDRTYPE_CONFIG 0xc
52
53 #define BUSTYPE_TO_ADDRTYPE(bustype) ((bustype >> 28) & 0xf)
54
55 static char *bus_addrtype[16] = {
56 "m", NULL, NULL, NULL, NULL, NULL, NULL, NULL,
57 "i", NULL, NULL, NULL, "", NULL, NULL, NULL
58 };
59
60 /*
61 * config information
62 */
63 int
64 rootnex_add_intr_impl(dev_info_t *dip, dev_info_t *rdip,
65 ddi_intr_handle_impl_t *hdlp);
66
67 int
68 rootnex_remove_intr_impl(dev_info_t *dip, dev_info_t *rdip,
69 ddi_intr_handle_impl_t *hdlp);
70
71 int
72 rootnex_get_intr_pri(dev_info_t *dip, dev_info_t *rdip,
73 ddi_intr_handle_impl_t *hdlp);
74
75 ddi_iblock_cookie_t rootnex_err_ibc;
76
77 /*
78 * rootnex_add_intr_impl:
79 */
80 /*ARGSUSED*/
81 int
rootnex_add_intr_impl(dev_info_t * dip,dev_info_t * rdip,ddi_intr_handle_impl_t * hdlp)82 rootnex_add_intr_impl(dev_info_t *dip, dev_info_t *rdip,
83 ddi_intr_handle_impl_t *hdlp)
84 {
85 return (i_ddi_add_ivintr(hdlp));
86 }
87
88 /*
89 * rootnex_remove_intr_impl:
90 */
91 /*ARGSUSED*/
92 int
rootnex_remove_intr_impl(dev_info_t * dip,dev_info_t * rdip,ddi_intr_handle_impl_t * hdlp)93 rootnex_remove_intr_impl(dev_info_t *dip, dev_info_t *rdip,
94 ddi_intr_handle_impl_t *hdlp)
95 {
96 i_ddi_rem_ivintr(hdlp);
97
98 return (DDI_SUCCESS);
99 }
100
101 /*
102 * rootnex_get_intr_pri:
103 */
104 /*ARGSUSED*/
105 int
rootnex_get_intr_pri(dev_info_t * dip,dev_info_t * rdip,ddi_intr_handle_impl_t * hdlp)106 rootnex_get_intr_pri(dev_info_t *dip, dev_info_t *rdip,
107 ddi_intr_handle_impl_t *hdlp)
108 {
109 return (hdlp->ih_pri);
110 }
111
112 int
rootnex_ctl_reportdev_impl(dev_info_t * dev)113 rootnex_ctl_reportdev_impl(dev_info_t *dev)
114 {
115 struct regspec *rp;
116 char buf[80];
117 char *p = buf;
118
119 (void) sprintf(p, "%s%d at root", ddi_driver_name(dev),
120 ddi_get_instance(dev));
121 p += strlen(p);
122
123 if (sparc_pd_getnreg(dev) > 0) {
124 rp = sparc_pd_getreg(dev, 0);
125
126 (void) strcpy(p, ": ");
127 p += strlen(p);
128
129 (void) snprintf(p, sizeof (buf) - (buf - p),
130 "0x%x 0x%x", rp->regspec_bustype & root_phys_addr_hi_mask,
131 rp->regspec_addr & root_phys_addr_lo_mask);
132
133 p += strlen(p);
134 }
135
136 /*
137 * This is where we need to print out the interrupt specifications
138 * for the FFB device and any UPA add-on devices. Not sure how to
139 * do this yet?
140 */
141 cmn_err(CE_CONT, "?%s\n", buf);
142 return (DDI_SUCCESS);
143 }
144
145 int
rootnex_name_child_impl(dev_info_t * child,char * name,int namelen)146 rootnex_name_child_impl(dev_info_t *child, char *name, int namelen)
147 {
148 struct ddi_parent_private_data *pdptr;
149 uint_t addrtype;
150 uint_t addrlow;
151 struct regspec *rp;
152
153 extern uint_t root_phys_addr_lo_mask;
154 extern void make_ddi_ppd(
155 dev_info_t *, struct ddi_parent_private_data **);
156
157 /*
158 * Fill in parent-private data and this function returns to us
159 * an indication if it used "registers" to fill in the data.
160 */
161 if (ddi_get_parent_data(child) == NULL) {
162 make_ddi_ppd(child, &pdptr);
163 ddi_set_parent_data(child, pdptr);
164 }
165
166 /*
167 * No reg property, return null string as address (e.g. pseudo)
168 */
169 name[0] = '\0';
170 if (sparc_pd_getnreg(child) == 0) {
171 return (DDI_SUCCESS);
172 }
173 rp = sparc_pd_getreg(child, 0);
174 ASSERT(rp != NULL);
175
176 /*
177 * Name node on behalf of child nexus.
178 */
179 if (ddi_get_parent(child) != ddi_root_node()) {
180 (void) snprintf(name, namelen, "%x,%x",
181 rp->regspec_bustype, rp->regspec_addr);
182 return (DDI_SUCCESS);
183 }
184
185 /*
186 * On sun4v, the 'name' of a root node device depends upon
187 * the first reg property, which contains two 32-bit address
188 * cells as follows:
189 *
190 * bit# 63-32: ssss.hhhh.hhhh.hhhh.hhhh.hhhh.hhhh.hhhh
191 * bit# 31-00: llll.llll.llll.llll.llll.llll.llll.llll
192 *
193 * where 'ssss' defines the address type and naming convention
194 * as follows:
195 *
196 * 0000 -> cacheable address space
197 * foo@m<high-addr>[,<low-addr>]
198 * 1000 -> non-cacheable IO address space
199 * foo@i<high-addr>[,<low-addr>]
200 * 1100 -> non-cacheable configuration address space
201 * foo@<high-addr>
202 *
203 * where <hish-addr> is hex-ASCII reprensation of the hh...hh
204 * bits and <low-addr> is hex-ASCII represenation of the
205 * ll...ll bits.
206 *
207 * Note that the leading zeros are omitted here. Also, if the
208 * <low-addr> bits are zero, then the trailing component is
209 * omitted as well.
210 */
211 addrtype = BUSTYPE_TO_ADDRTYPE(rp->regspec_bustype);
212 addrlow = rp->regspec_addr & root_phys_addr_lo_mask;
213 if (bus_addrtype[addrtype] == NULL)
214 cmn_err(CE_PANIC, "rootnex: wrong bustype: %x child: %s\n",
215 rp->regspec_bustype, ddi_node_name(child));
216 else if (addrtype == BUS_ADDRTYPE_CONFIG || addrlow == 0)
217 (void) snprintf(name, namelen, "%s%x",
218 bus_addrtype[addrtype],
219 rp->regspec_bustype & root_phys_addr_hi_mask);
220 else
221 (void) snprintf(name, namelen, "%s%x,%x",
222 bus_addrtype[addrtype],
223 rp->regspec_bustype & root_phys_addr_hi_mask, addrlow);
224
225 return (DDI_SUCCESS);
226 }
227
228
229 int
rootnex_ctl_initchild_impl(dev_info_t * dip)230 rootnex_ctl_initchild_impl(dev_info_t *dip)
231 {
232 struct ddi_parent_private_data *pd;
233 char name[MAXNAMELEN];
234
235 extern struct ddi_parent_private_data *init_regspec_64(dev_info_t *dip);
236
237 /* Name the child */
238 (void) rootnex_name_child(dip, name, MAXNAMELEN);
239 ddi_set_name_addr(dip, name);
240
241 /*
242 * Try to merge .conf node. If merge is successful, return
243 * DDI_FAILURE to allow caller to remove this node.
244 */
245 if (ndi_dev_is_persistent_node(dip) == 0 &&
246 (ndi_merge_node(dip, rootnex_name_child) == DDI_SUCCESS)) {
247 (void) rootnex_ctl_uninitchild(dip);
248 return (DDI_FAILURE);
249 }
250
251 /*
252 * If there are no "reg"s in the child node, return.
253 */
254 pd = init_regspec_64(dip);
255 if ((pd == NULL) || (pd->par_nreg == 0))
256 return (DDI_SUCCESS);
257
258 return (DDI_SUCCESS);
259 }
260
261 /*ARGSUSED*/
262 void
rootnex_ctl_uninitchild_impl(dev_info_t * dip)263 rootnex_ctl_uninitchild_impl(dev_info_t *dip)
264 {
265 }
266