xref: /illumos-gate/usr/src/uts/i86pc/sys/acpidev_dr.h (revision a31148363f598def767ac48c5d82e1572e44b935)
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 /*
23  * Copyright (c) 2010, Intel Corporation.
24  * All rights reserved.
25  */
26 /*
27  * Interfaces to support System Board Dynamic Reconfiguration.
28  */
29 
30 #ifndef	_SYS_ACPIDEV_DR_H
31 #define	_SYS_ACPIDEV_DR_H
32 #include <sys/types.h>
33 #include <sys/obpdefs.h>
34 #include <sys/cpuvar.h>
35 #include <sys/memlist.h>
36 #include <sys/sunddi.h>
37 #include <sys/acpi/acpi.h>
38 #include <sys/acpica.h>
39 #include <sys/acpidev.h>
40 #include <sys/acpidev_rsc.h>
41 
42 #ifdef __cplusplus
43 extern "C" {
44 #endif
45 
46 #ifdef	_KERNEL
47 
48 /* Maximum number of DR capable system boards supported. */
49 #define	ACPIDEV_DR_MAX_BOARDS		0x40
50 #define	ACPIDEV_DR_SEGS_PER_MEM_DEV	0x10
51 #define	ACPIDEV_DR_MEMLISTS_PER_SEG	0x10
52 #define	ACPIDEV_DR_MAX_MEMLIST_ENTRIES	0x10000
53 
54 #define	ACPIDEV_DR_PROP_PORTID		"portid"
55 #define	ACPIDEV_DR_PROP_BOARDNUM	OBP_BOARDNUM
56 #define	ACPIDEV_DR_PROP_DEVNAME		OBP_NAME
57 
58 /*
59  * Format strings for DR capable system boards.
60  * They will be used as attachment point names.
61  */
62 #define	ACPIDEV_DR_CPU_BD_FMT		"CPU%u"
63 #define	ACPIDEV_DR_MEMORY_BD_FMT	"MEM%u"
64 #define	ACPIDEV_DR_IO_BD_FMT		"IO%u"
65 #define	ACPIDEV_DR_SYSTEM_BD_FMT	"SB%u"
66 
67 typedef enum {
68 	ACPIDEV_INVALID_BOARD = 0,
69 	ACPIDEV_CPU_BOARD,
70 	ACPIDEV_MEMORY_BOARD,
71 	ACPIDEV_IO_BOARD,
72 	ACPIDEV_SYSTEM_BOARD
73 } acpidev_board_type_t;
74 
75 /* Check whether the system is DR capable. */
76 extern int acpidev_dr_capable(void);
77 
78 extern uint32_t acpidev_dr_max_boards(void);
79 extern uint32_t acpidev_dr_max_mem_units_per_board(void);
80 extern uint32_t acpidev_dr_max_io_units_per_board(void);
81 extern uint32_t acpidev_dr_max_cmp_units_per_board(void);
82 extern uint32_t acpidev_dr_max_cpu_units_per_cmp(void);
83 extern uint32_t acpidev_dr_max_segments_per_mem_device(void);
84 extern uint32_t acpidev_dr_max_memlists_per_segment(void);
85 extern ACPI_STATUS acpidev_dr_get_mem_alignment(ACPI_HANDLE hdl, uint64_t *ap);
86 
87 /* Initialize support of DR operations. */
88 extern void acpidev_dr_init(void);
89 
90 /* Scan for DR capable boards and setup environment for DR operations. */
91 extern void acpidev_dr_check(acpidev_walk_info_t *infop);
92 
93 /*
94  * Initialize DR interfaces to enable DR operations.
95  */
96 extern ACPI_STATUS acpidev_dr_initialize(dev_info_t *pdip);
97 
98 /* Get ACPI handle of the DR capable board. */
99 extern ACPI_STATUS acpidev_dr_get_board_handle(uint_t board,
100     ACPI_HANDLE *hdlp);
101 
102 /* Get board type of the DR capable board. */
103 extern acpidev_board_type_t acpidev_dr_get_board_type(ACPI_HANDLE hdl);
104 
105 /* Get board number of the DR capable board. */
106 extern ACPI_STATUS acpidev_dr_get_board_number(ACPI_HANDLE hdl,
107     uint32_t *bnump);
108 
109 /* Get board name of the DR capable board. */
110 extern ACPI_STATUS acpidev_dr_get_board_name(ACPI_HANDLE hdl,
111     char *buf, size_t len);
112 
113 /* Get attachment point of the DR capable board. */
114 extern ACPI_STATUS acpidev_dr_get_attachment_point(ACPI_HANDLE hdl,
115     char *buf, size_t len);
116 
117 /*
118  * Figure out device type of the object/device.
119  * It only supports device types which may be involved in DR operations.
120  */
121 extern acpidev_class_id_t acpidev_dr_device_get_class(ACPI_HANDLE hdl);
122 
123 /* Get memory device index/id. */
124 extern ACPI_STATUS acpidev_dr_device_get_memory_index(ACPI_HANDLE hdl,
125     uint32_t *idxp);
126 
127 /* Check whether the device is a DR capable board or not. */
128 extern int acpidev_dr_device_is_board(ACPI_HANDLE hdl);
129 
130 /* Check whether the device is present or not. */
131 extern int acpidev_dr_device_is_present(ACPI_HANDLE hdl);
132 
133 /* Check whether the device is powered-on or not. */
134 extern int acpidev_dr_device_is_powered(ACPI_HANDLE hdl);
135 
136 /* Check whether the device is DR capable. */
137 extern int acpidev_dr_device_hotplug_capable(ACPI_HANDLE hdl);
138 
139 /* Check whether the device has an eject device list. */
140 extern int acpidev_dr_device_has_edl(ACPI_HANDLE hdl);
141 
142 /*
143  * Simulate OBP property interfaces to support drmach driver,
144  * so we can keep drmach in consistency with SPARC version.
145  * Return size of data copied to buf if it's big enough,
146  * otherwise return size of buffer needed.
147  */
148 extern int acpidev_dr_device_getprop(ACPI_HANDLE hdl, char *name,
149     caddr_t buf, size_t len);
150 
151 /*
152  * Get "reg" or "assigned-address" property of the device.
153  * Return "assigned-address" property if assigned is non-zero,
154  * otherwise return "reg" property.
155  * Caller needs to release returned resources by calling
156  * acpidev_dr_device_free_regspec().
157  */
158 extern ACPI_STATUS acpidev_dr_device_get_regspec(ACPI_HANDLE hdl,
159     boolean_t assigned, acpidev_regspec_t **regpp, uint_t *cntp);
160 
161 /* Free resources returned by acpidev_dr_device_get_regspec(). */
162 extern void acpidev_dr_device_free_regspec(acpidev_regspec_t *regp,
163     uint_t count);
164 
165 /* Walk devices in eject device list (ACPI _EDL method). */
166 extern ACPI_STATUS acpidev_dr_device_walk_edl(ACPI_HANDLE hdl,
167     ACPI_WALK_CALLBACK cb, void *arg, void **retval);
168 
169 /* Walk devices in eject dependency list (ACPI _EJD method). */
170 extern ACPI_STATUS acpidev_dr_device_walk_ejd(ACPI_HANDLE hdl,
171     ACPI_WALK_CALLBACK cb, void *arg, void **retval);
172 
173 /*
174  * Walk child and dependent devices which may be involved in DR operations.
175  * PCI host bridges embedded in physical processors may be presented in eject
176  * device list instead of as children of processors.
177  */
178 extern ACPI_STATUS acpidev_dr_device_walk_device(ACPI_HANDLE hdl,
179     uint_t max_lvl, ACPI_WALK_CALLBACK cb, void *arg, void **retval);
180 
181 /* Check whether the device is in working state without any error. */
182 extern ACPI_STATUS acpidev_dr_device_check_status(ACPI_HANDLE hdl);
183 
184 /* Power on the device. */
185 extern ACPI_STATUS acpidev_dr_device_poweron(ACPI_HANDLE hdl);
186 
187 /* Power off the device. */
188 extern ACPI_STATUS acpidev_dr_device_poweroff(ACPI_HANDLE hdl);
189 
190 /*
191  * Create device nodes for hot-added devices under hdl.
192  * Return:
193  * AE_OK: on success
194  * AE_SUPPORT: if it's not capable of DR operation.
195  * AE_ERROR: for other errors
196  */
197 extern ACPI_STATUS acpidev_dr_device_insert(ACPI_HANDLE hdl);
198 
199 /*
200  * Destroy device nodes to be removed under hdl.
201  * AE_OK: on success
202  * AE_SUPPORT: if it's not capable of DR operation.
203  * AE_ERROR: for other errors
204  */
205 extern ACPI_STATUS acpidev_dr_device_remove(ACPI_HANDLE hdl);
206 
207 /* Block dynamic reconfiguration operations. */
208 extern void acpidev_dr_lock_all(void);
209 
210 /* Unblock dynamic reconfiguration operations. */
211 extern void acpidev_dr_unlock_all(void);
212 
213 extern ACPI_STATUS acpidev_dr_allocate_cpuid(ACPI_HANDLE hdl,
214     processorid_t *idp);
215 extern ACPI_STATUS acpidev_dr_free_cpuid(ACPI_HANDLE hdl);
216 
217 /*
218  * Query NUMA relative information for the CPU device.
219  * It returns APIC id, Proximity id and latency information of the CPU device.
220  * Latency information is retrieved from the ACPI _SLI method or the ACPI SLIT
221  * table.
222  */
223 extern int acpidev_dr_get_cpu_numa_info(cpu_t *cp, void **hdlpp,
224     uint32_t *apicidp, uint32_t *pxmidp, uint32_t *slicntp, uchar_t **slipp);
225 
226 /*
227  * Release resources allocated by acpidev_dr_get_cpu_numa_info().
228  */
229 extern void acpidev_dr_free_cpu_numa_info(void *hdlp);
230 
231 /*
232  * Query NUMA relative information for a memory device.
233  * It returns proximity id and latency information of the memory device.
234  * Latency information is obtained from the ACPI _SLI method or the ACPI
235  * SLIT table.
236  */
237 extern ACPI_STATUS acpidev_dr_get_mem_numa_info(ACPI_HANDLE hdl,
238     struct memlist *ml, void **hdlpp, uint32_t *pxmidp,
239     uint32_t *slicntp, uchar_t **slipp);
240 
241 /*
242  * Release resources allocated by acpidev_dr_get_mem_numa_info().
243  */
244 extern void acpidev_dr_free_mem_numa_info(void *hdlp);
245 
246 #endif	/* _KERNEL */
247 
248 #ifdef __cplusplus
249 }
250 #endif
251 
252 #endif	/* _SYS_ACPIDEV_DR_H */
253