1*a9da3307Snp /***************************************************************************
2*a9da3307Snp  *
3*a9da3307Snp  * devinfo_cpu : cpu devices
4*a9da3307Snp  *
5*a9da3307Snp  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
6*a9da3307Snp  * Use is subject to license terms.
7*a9da3307Snp  *
8*a9da3307Snp  * Licensed under the Academic Free License version 2.1
9*a9da3307Snp  *
10*a9da3307Snp  **************************************************************************/
12*a9da3307Snp #pragma ident	"%Z%%M%	%I%	%E% SMI"
14*a9da3307Snp #ifdef HAVE_CONFIG_H
15*a9da3307Snp #include <config.h>
16*a9da3307Snp #endif
18*a9da3307Snp #include <stdio.h>
19*a9da3307Snp #include <string.h>
20*a9da3307Snp #include <kstat.h>
21*a9da3307Snp #include <sys/utsname.h>
22*a9da3307Snp #include <libdevinfo.h>
23*a9da3307Snp #include <sys/systeminfo.h>
25*a9da3307Snp #include "../osspec.h"
26*a9da3307Snp #include "../logger.h"
27*a9da3307Snp #include "../hald.h"
28*a9da3307Snp #include "../hald_dbus.h"
29*a9da3307Snp #include "../device_info.h"
30*a9da3307Snp #include "../util.h"
31*a9da3307Snp #include "devinfo_cpu.h"
33*a9da3307Snp static HalDevice *devinfo_cpu_add(HalDevice *, di_node_t, char *, char *);
35*a9da3307Snp DevinfoDevHandler devinfo_cpu_handler = {
36*a9da3307Snp 	devinfo_cpu_add,
37*a9da3307Snp 	NULL,
38*a9da3307Snp 	NULL,
39*a9da3307Snp 	NULL,
40*a9da3307Snp 	NULL,
41*a9da3307Snp 	NULL
42*a9da3307Snp };
44*a9da3307Snp static HalDevice *
devinfo_cpu_add(HalDevice * parent,di_node_t node,char * devfs_path,char * device_type)45*a9da3307Snp devinfo_cpu_add(HalDevice *parent, di_node_t node, char *devfs_path, char *device_type)
46*a9da3307Snp {
48*a9da3307Snp 	HalDevice	*d;
49*a9da3307Snp 	char		*prom_device_type = NULL;
50*a9da3307Snp 	int		*int_cpu_id;
51*a9da3307Snp 	static int	cpu_id = -1;
52*a9da3307Snp 	uint64_t	clock_mhz;
53*a9da3307Snp 	di_prom_handle_t phdl;
54*a9da3307Snp 	kstat_ctl_t	*kc;
55*a9da3307Snp 	kstat_t		*ksp;
56*a9da3307Snp 	kstat_named_t	*ksdata;
57*a9da3307Snp 	dbus_bool_t	is_supp_freqs;
58*a9da3307Snp 	char		udi[HAL_PATH_MAX];
59*a9da3307Snp 	char		*driver_name, *s;
60*a9da3307Snp 	char		cpu_devfs_path[HAL_PATH_MAX];
62*a9da3307Snp 	/*
63*a9da3307Snp 	 * If it is x86, the software device tree node will have the
64*a9da3307Snp 	 * device_type information which is the one passed above. If it is
65*a9da3307Snp 	 * NULL, check if the node has a PROM entry, and check the device_type
66*a9da3307Snp 	 * in case of sparc. Else return NULL
67*a9da3307Snp 	 */
68*a9da3307Snp 	if (device_type == NULL) {
69*a9da3307Snp 		/*
70*a9da3307Snp 		 * Check the device type if it has a PROM entry. Because
71*a9da3307Snp 		 * in sparc, the device_type entry will in the PROM node
72*a9da3307Snp 		 */
73*a9da3307Snp 		if (di_nodeid (node) == DI_PROM_NODEID) {
74*a9da3307Snp 			phdl = di_prom_init ();
75*a9da3307Snp 			if (phdl == DI_PROM_HANDLE_NIL) {
76*a9da3307Snp 				HAL_ERROR (("Error in Initializing the PROM "
77*a9da3307Snp 				    "handle to find cpu device: %s",
78*a9da3307Snp 				    strerror (errno)));
79*a9da3307Snp 				return (NULL);
80*a9da3307Snp 			}
81*a9da3307Snp 			if (di_prom_prop_lookup_strings (phdl, node,
82*a9da3307Snp 			    "device_type", &prom_device_type) == -1) {
83*a9da3307Snp 				di_prom_fini (phdl);
84*a9da3307Snp 				return (NULL);
85*a9da3307Snp 			}
86*a9da3307Snp 			if (strcmp (prom_device_type, "cpu") != 0) {
87*a9da3307Snp 				di_prom_fini (phdl);
88*a9da3307Snp 				return (NULL);
89*a9da3307Snp 			}
90*a9da3307Snp 			/*
91*a9da3307Snp 			 * Get cpuid if available
92*a9da3307Snp 			 */
93*a9da3307Snp 			if (di_prom_prop_lookup_ints (phdl, node,
94*a9da3307Snp 			    "cpuid", &int_cpu_id) > 0) {
95*a9da3307Snp 				cpu_id = *int_cpu_id;
96*a9da3307Snp 			} else {
97*a9da3307Snp 				/*
98*a9da3307Snp 				 * There is no cpuid entry in this arch.Just
99*a9da3307Snp 				 * increment the cpuid which will be the
100*a9da3307Snp 				 * current instance
101*a9da3307Snp 				 */
102*a9da3307Snp 				++cpu_id;
103*a9da3307Snp 			}
104*a9da3307Snp 			di_prom_fini (phdl);
105*a9da3307Snp 		} else {
106*a9da3307Snp 			return (NULL);
107*a9da3307Snp 		}
109*a9da3307Snp 	} else if (strcmp (device_type, "cpu") == 0) {
110*a9da3307Snp 		/*
111*a9da3307Snp 		 * This is a x86 arch, because software device tree node
112*a9da3307Snp 		 * has the device_type entry for cpu. The "reg" property
113*a9da3307Snp 		 * will have the cpuid. If not just increment the cpuid
114*a9da3307Snp 		 * which will be the current cpu instance in the kstat
115*a9da3307Snp 		 */
116*a9da3307Snp 		if (di_prop_lookup_ints (DDI_DEV_T_ANY, node,
117*a9da3307Snp 		    "reg", &int_cpu_id) > 0) {
118*a9da3307Snp 			cpu_id = *int_cpu_id;
119*a9da3307Snp 		} else {
120*a9da3307Snp 			/*
121*a9da3307Snp 			 * There is no cpuid entry in this arch. Just
122*a9da3307Snp 			 * increment the cpuid which will be the
123*a9da3307Snp 			 * current instance
124*a9da3307Snp 			 */
125*a9da3307Snp 			++cpu_id;
126*a9da3307Snp 		}
128*a9da3307Snp 	} else {
129*a9da3307Snp 		return (NULL);
130*a9da3307Snp 	}
132*a9da3307Snp 	HAL_DEBUG (("CPUID=> %x", cpu_id));
134*a9da3307Snp 	d = hal_device_new ();
136*a9da3307Snp 	/*
137*a9da3307Snp 	 * devinfo_set_default_properties () uses di_instance() as part of
138*a9da3307Snp 	 * the udi. For some solaris devices like cpu di_instance() is not
139*a9da3307Snp 	 * present and it returns -1. For the udi to be unique can use the
140*a9da3307Snp 	 * cpu_id.
141*a9da3307Snp 	 */
142*a9da3307Snp 	hal_device_property_set_string (d, "info.parent",
143*a9da3307Snp 	    "/org/freedesktop/Hal/devices/local");
145*a9da3307Snp 	/*
146*a9da3307Snp 	 * If cpu driver is not installed, then devfs_path returned by
147*a9da3307Snp 	 * libdevinfo will be same for all cpu's.
148*a9da3307Snp 	 * Since HAL stores the devices in its tree based on the devfs_path,
149*a9da3307Snp 	 * To make it unique, will be concatenating devfs_path with cpu_id
150*a9da3307Snp 	 */
151*a9da3307Snp 	if (di_driver_name (node) == NULL) {
152*a9da3307Snp 		snprintf (cpu_devfs_path, HAL_PATH_MAX, "%s_%d",
153*a9da3307Snp 		    devfs_path, cpu_id);
154*a9da3307Snp 	} else {
155*a9da3307Snp 		snprintf (cpu_devfs_path, HAL_PATH_MAX, "%s", devfs_path);
156*a9da3307Snp 	}
158*a9da3307Snp 	HAL_DEBUG(("DevfsPath=> %s, CPUID=> %d", cpu_devfs_path, cpu_id));
160*a9da3307Snp 	hal_util_compute_udi (hald_get_gdl (), udi, sizeof (udi),
161*a9da3307Snp 	    "/org/freedesktop/Hal/devices%s_%d", cpu_devfs_path, cpu_id);
162*a9da3307Snp 	hal_device_set_udi (d, udi);
163*a9da3307Snp 	hal_device_property_set_string (d, "info.udi", udi);
164*a9da3307Snp 	if (di_prop_lookup_strings (DDI_DEV_T_ANY, node, "model", &s) > 0) {
165*a9da3307Snp 		hal_device_property_set_string (d, "info.product", s);
166*a9da3307Snp 	} else {
167*a9da3307Snp 		hal_device_property_set_string (d, "info.product",
168*a9da3307Snp 		    di_node_name (node));
169*a9da3307Snp 	}
170*a9da3307Snp 	hal_device_property_set_string (d, "solaris.devfs_path",
171*a9da3307Snp 	    cpu_devfs_path);
172*a9da3307Snp 	if ((driver_name = di_driver_name (node)) != NULL) {
173*a9da3307Snp 		hal_device_property_set_string (d, "info.solaris.driver",
174*a9da3307Snp 		    driver_name);
175*a9da3307Snp 	}
177*a9da3307Snp 	hal_device_add_capability (d, "processor");
179*a9da3307Snp 	hal_device_property_set_int (d, "processor.number", cpu_id);
181*a9da3307Snp 	/*
182*a9da3307Snp 	 * Get the cpu related info from the kstat
183*a9da3307Snp 	 */
184*a9da3307Snp 	kc = kstat_open ();
185*a9da3307Snp 	if (kc == NULL) {
186*a9da3307Snp 		HAL_ERROR (("Could not open kstat to get cpu info: %s",
187*a9da3307Snp 		    strerror (errno)));
188*a9da3307Snp 		goto next;
189*a9da3307Snp 	}
191*a9da3307Snp 	ksp = kstat_lookup (kc, "cpu_info", cpu_id, NULL);
192*a9da3307Snp 	if (ksp == NULL) {
193*a9da3307Snp 		HAL_ERROR (("Could not lookup kstat to get cpu info: %s",
194*a9da3307Snp 		    strerror (errno)));
195*a9da3307Snp 		if (kc) {
196*a9da3307Snp 			kstat_close (kc);
197*a9da3307Snp 		}
198*a9da3307Snp 		return (NULL);
199*a9da3307Snp 	}
201*a9da3307Snp 	kstat_read (kc, ksp, NULL);
202*a9da3307Snp 	ksdata = (kstat_named_t *)kstat_data_lookup (ksp, "clock_MHz");
203*a9da3307Snp 	if (ksdata == NULL) {
204*a9da3307Snp 		HAL_ERROR (("Could not get kstat clock_MHz data for cpu: %s",
205*a9da3307Snp 		    strerror (errno)));
206*a9da3307Snp 		goto next;
207*a9da3307Snp 	}
208*a9da3307Snp 	clock_mhz = (uint64_t)ksdata->value.l;
210*a9da3307Snp 	if (hal_device_property_set_uint64 (d, "processor.maximum_speed",
211*a9da3307Snp 	    clock_mhz) == FALSE) {
212*a9da3307Snp 		HAL_INFO (("Could not set the processor speed device prop"));
213*a9da3307Snp 	}
216*a9da3307Snp 	ksdata = (kstat_named_t *)kstat_data_lookup (ksp,
217*a9da3307Snp 	    "supported_frequencies_Hz");
218*a9da3307Snp 	if (ksdata == NULL) {
219*a9da3307Snp 		HAL_INFO (("Could not get kstat supported_frequencies_Hz data"
220*a9da3307Snp 		    " for cpu: %s", strerror (errno)));
221*a9da3307Snp 		is_supp_freqs = FALSE;
222*a9da3307Snp 	} else {
223*a9da3307Snp 		/*
224*a9da3307Snp 		 * If more than one freq is supported, then they are seperated
225*a9da3307Snp 		 * by a ":"
226*a9da3307Snp 		 */
227*a9da3307Snp 		if (strstr (ksdata->value.str.addr.ptr, ":") == NULL) {
228*a9da3307Snp 			is_supp_freqs = FALSE;
229*a9da3307Snp 		} else {
230*a9da3307Snp 			is_supp_freqs = TRUE;
231*a9da3307Snp 		}
232*a9da3307Snp 	}
234*a9da3307Snp 	if (hal_device_property_set_bool (d, "processor.can_throttle",
235*a9da3307Snp 	    is_supp_freqs) == FALSE) {
236*a9da3307Snp 		HAL_INFO (("Could not set the processor.can_throttle"
237*a9da3307Snp 		    " device prop"));
238*a9da3307Snp 	}
240*a9da3307Snp next:
241*a9da3307Snp 	if (kc) {
242*a9da3307Snp 		kstat_close (kc);
243*a9da3307Snp 	}
245*a9da3307Snp 	devinfo_add_enqueue (d, cpu_devfs_path, &devinfo_cpu_handler);
246*a9da3307Snp 	return (d);
247*a9da3307Snp }