ACPI: delete tracing macros from drivers/acpi/*.c
[linux-2.6.git] / drivers / acpi / motherboard.c
1 /* 
2  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
3  *  This program is free software; you can redistribute it and/or modify
4  *  it under the terms of the GNU General Public License as published by
5  *  the Free Software Foundation; either version 2 of the License, or (at
6  *  your option) any later version.
7  *
8  *  This program is distributed in the hope that it will be useful, but
9  *  WITHOUT ANY WARRANTY; without even the implied warranty of
10  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
11  *  General Public License for more details.
12  *
13  *  You should have received a copy of the GNU General Public License along
14  *  with this program; if not, write to the Free Software Foundation, Inc.,
15  *  59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
16  *
17  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
18  */
19
20 /* Purpose: Prevent PCMCIA cards from using motherboard resources. */
21
22 #include <linux/kernel.h>
23 #include <linux/init.h>
24 #include <linux/types.h>
25 #include <linux/pci.h>
26 #include <linux/ioport.h>
27 #include <asm/io.h>
28
29 #include <acpi/acpi_bus.h>
30 #include <acpi/acpi_drivers.h>
31
32 #define _COMPONENT              ACPI_SYSTEM_COMPONENT
33 ACPI_MODULE_NAME("acpi_motherboard")
34
35 /* Dell use PNP0C01 instead of PNP0C02 */
36 #define ACPI_MB_HID1                    "PNP0C01"
37 #define ACPI_MB_HID2                    "PNP0C02"
38 /**
39  * Doesn't care about legacy IO ports, only IO ports beyond 0x1000 are reserved
40  * Doesn't care about the failure of 'request_region', since other may reserve
41  * the io ports as well
42  */
43 #define IS_RESERVED_ADDR(base, len) \
44         (((len) > 0) && ((base) > 0) && ((base) + (len) < IO_SPACE_LIMIT) \
45         && ((base) + (len) > PCIBIOS_MIN_IO))
46 /*
47  * Clearing the flag (IORESOURCE_BUSY) allows drivers to use
48  * the io ports if they really know they can use it, while
49  * still preventing hotplug PCI devices from using it.
50  */
51 static acpi_status acpi_reserve_io_ranges(struct acpi_resource *res, void *data)
52 {
53         struct resource *requested_res = NULL;
54
55
56         if (res->type == ACPI_RESOURCE_TYPE_IO) {
57                 struct acpi_resource_io *io_res = &res->data.io;
58
59                 if (io_res->minimum != io_res->maximum)
60                         return AE_OK;
61                 if (IS_RESERVED_ADDR
62                     (io_res->minimum, io_res->address_length)) {
63                         ACPI_DEBUG_PRINT((ACPI_DB_INFO,
64                                           "Motherboard resources 0x%08x - 0x%08x\n",
65                                           io_res->minimum,
66                                           io_res->minimum +
67                                           io_res->address_length));
68                         requested_res =
69                             request_region(io_res->minimum,
70                                            io_res->address_length, "motherboard");
71                 }
72         } else if (res->type == ACPI_RESOURCE_TYPE_FIXED_IO) {
73                 struct acpi_resource_fixed_io *fixed_io_res =
74                     &res->data.fixed_io;
75
76                 if (IS_RESERVED_ADDR
77                     (fixed_io_res->address, fixed_io_res->address_length)) {
78                         ACPI_DEBUG_PRINT((ACPI_DB_INFO,
79                                           "Motherboard resources 0x%08x - 0x%08x\n",
80                                           fixed_io_res->address,
81                                           fixed_io_res->address +
82                                           fixed_io_res->address_length));
83                         requested_res =
84                             request_region(fixed_io_res->address,
85                                            fixed_io_res->address_length,
86                                            "motherboard");
87                 }
88         } else {
89                 /* Memory mapped IO? */
90         }
91
92         if (requested_res)
93                 requested_res->flags &= ~IORESOURCE_BUSY;
94         return AE_OK;
95 }
96
97 static int acpi_motherboard_add(struct acpi_device *device)
98 {
99         if (!device)
100                 return -EINVAL;
101         acpi_walk_resources(device->handle, METHOD_NAME__CRS,
102                             acpi_reserve_io_ranges, NULL);
103
104         return 0;
105 }
106
107 static struct acpi_driver acpi_motherboard_driver1 = {
108         .name = "motherboard",
109         .class = "",
110         .ids = ACPI_MB_HID1,
111         .ops = {
112                 .add = acpi_motherboard_add,
113                 },
114 };
115
116 static struct acpi_driver acpi_motherboard_driver2 = {
117         .name = "motherboard",
118         .class = "",
119         .ids = ACPI_MB_HID2,
120         .ops = {
121                 .add = acpi_motherboard_add,
122                 },
123 };
124
125 static void __init acpi_request_region (struct acpi_generic_address *addr,
126         unsigned int length, char *desc)
127 {
128         if (!addr->address || !length)
129                 return;
130
131         if (addr->address_space_id == ACPI_ADR_SPACE_SYSTEM_IO)
132                 request_region(addr->address, length, desc);
133         else if (addr->address_space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY)
134                 request_mem_region(addr->address, length, desc);
135 }
136
137 static void __init acpi_reserve_resources(void)
138 {
139         acpi_request_region(&acpi_gbl_FADT->xpm1a_evt_blk,
140                                acpi_gbl_FADT->pm1_evt_len, "ACPI PM1a_EVT_BLK");
141
142         acpi_request_region(&acpi_gbl_FADT->xpm1b_evt_blk,
143                                acpi_gbl_FADT->pm1_evt_len, "ACPI PM1b_EVT_BLK");
144
145         acpi_request_region(&acpi_gbl_FADT->xpm1a_cnt_blk,
146                                acpi_gbl_FADT->pm1_cnt_len, "ACPI PM1a_CNT_BLK");
147
148         acpi_request_region(&acpi_gbl_FADT->xpm1b_cnt_blk,
149                                acpi_gbl_FADT->pm1_cnt_len, "ACPI PM1b_CNT_BLK");
150
151         if (acpi_gbl_FADT->pm_tm_len == 4)
152                 acpi_request_region(&acpi_gbl_FADT->xpm_tmr_blk, 4, "ACPI PM_TMR");
153
154         acpi_request_region(&acpi_gbl_FADT->xpm2_cnt_blk,
155                                acpi_gbl_FADT->pm2_cnt_len, "ACPI PM2_CNT_BLK");
156
157         /* Length of GPE blocks must be a non-negative multiple of 2 */
158
159         if (!(acpi_gbl_FADT->gpe0_blk_len & 0x1))
160                 acpi_request_region(&acpi_gbl_FADT->xgpe0_blk,
161                                acpi_gbl_FADT->gpe0_blk_len, "ACPI GPE0_BLK");
162
163         if (!(acpi_gbl_FADT->gpe1_blk_len & 0x1))
164                 acpi_request_region(&acpi_gbl_FADT->xgpe1_blk,
165                                acpi_gbl_FADT->gpe1_blk_len, "ACPI GPE1_BLK");
166 }
167
168 static int __init acpi_motherboard_init(void)
169 {
170         acpi_bus_register_driver(&acpi_motherboard_driver1);
171         acpi_bus_register_driver(&acpi_motherboard_driver2);
172         /*
173          * Guarantee motherboard IO reservation first
174          * This module must run after scan.c
175          */
176         if (!acpi_disabled)
177                 acpi_reserve_resources();
178         return 0;
179 }
180
181 /**
182  * Reserve motherboard resources after PCI claim BARs,
183  * but before PCI assign resources for uninitialized PCI devices
184  */
185 fs_initcall(acpi_motherboard_init);