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authorPaul Gortmaker <paul.gortmaker@windriver.com>2012-05-17 19:06:13 -0400
committerPaul Gortmaker <paul.gortmaker@windriver.com>2012-05-17 19:06:13 -0400
commitbb8187d35f820671d6dd76700d77a6b55f95e2c5 (patch)
treeb699b184860cc7e9f2732c73d61ea92e3e2ad9e4 /drivers/mca/mca-proc.c
parenta88dc06cd515b3bb9dfa18606e88d0be9a5b6ddd (diff)
MCA: delete all remaining traces of microchannel bus support.
Hardware with MCA bus is limited to 386 and 486 class machines that are now 20+ years old and typically with less than 32MB of memory. A quick search on the internet, and you see that even the MCA hobbyist/enthusiast community has lost interest in the early 2000 era and never really even moved ahead from the 2.4 kernels to the 2.6 series. This deletes anything remaining related to CONFIG_MCA from core kernel code and from the x86 architecture. There is no point in carrying this any further into the future. One complication to watch for is inadvertently scooping up stuff relating to machine check, since there is overlap in the TLA name space (e.g. arch/x86/boot/mca.c). Cc: Thomas Gleixner <tglx@linutronix.de> Cc: James Bottomley <JBottomley@Parallels.com> Cc: x86@kernel.org Acked-by: Ingo Molnar <mingo@elte.hu> Acked-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Diffstat (limited to 'drivers/mca/mca-proc.c')
-rw-r--r--drivers/mca/mca-proc.c249
1 files changed, 0 insertions, 249 deletions
diff --git a/drivers/mca/mca-proc.c b/drivers/mca/mca-proc.c
deleted file mode 100644
index 81ea0d377bf4..000000000000
--- a/drivers/mca/mca-proc.c
+++ /dev/null
@@ -1,249 +0,0 @@
1/* -*- mode: c; c-basic-offset: 8 -*- */
2
3/*
4 * MCA bus support functions for the proc fs.
5 *
6 * NOTE: this code *requires* the legacy MCA api.
7 *
8 * Legacy API means the API that operates in terms of MCA slot number
9 *
10 * (C) 2002 James Bottomley <James.Bottomley@HansenPartnership.com>
11 *
12**-----------------------------------------------------------------------------
13**
14** This program is free software; you can redistribute it and/or modify
15** it under the terms of the GNU General Public License as published by
16** the Free Software Foundation; either version 2 of the License, or
17** (at your option) any later version.
18**
19** This program is distributed in the hope that it will be useful,
20** but WITHOUT ANY WARRANTY; without even the implied warranty of
21** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22** GNU General Public License for more details.
23**
24** You should have received a copy of the GNU General Public License
25** along with this program; if not, write to the Free Software
26** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27**
28**-----------------------------------------------------------------------------
29 */
30#include <linux/module.h>
31#include <linux/init.h>
32#include <linux/proc_fs.h>
33#include <linux/mca.h>
34
35static int get_mca_info_helper(struct mca_device *mca_dev, char *page, int len)
36{
37 int j;
38
39 for(j=0; j<8; j++)
40 len += sprintf(page+len, "%02x ",
41 mca_dev ? mca_dev->pos[j] : 0xff);
42 len += sprintf(page+len, " %s\n", mca_dev ? mca_dev->name : "");
43 return len;
44}
45
46static int get_mca_info(char *page, char **start, off_t off,
47 int count, int *eof, void *data)
48{
49 int i, len = 0;
50
51 if(MCA_bus) {
52 struct mca_device *mca_dev;
53 /* Format POS registers of eight MCA slots */
54
55 for(i=0; i<MCA_MAX_SLOT_NR; i++) {
56 mca_dev = mca_find_device_by_slot(i);
57
58 len += sprintf(page+len, "Slot %d: ", i+1);
59 len = get_mca_info_helper(mca_dev, page, len);
60 }
61
62 /* Format POS registers of integrated video subsystem */
63
64 mca_dev = mca_find_device_by_slot(MCA_INTEGVIDEO);
65 len += sprintf(page+len, "Video : ");
66 len = get_mca_info_helper(mca_dev, page, len);
67
68 /* Format POS registers of integrated SCSI subsystem */
69
70 mca_dev = mca_find_device_by_slot(MCA_INTEGSCSI);
71 len += sprintf(page+len, "SCSI : ");
72 len = get_mca_info_helper(mca_dev, page, len);
73
74 /* Format POS registers of motherboard */
75
76 mca_dev = mca_find_device_by_slot(MCA_MOTHERBOARD);
77 len += sprintf(page+len, "Planar: ");
78 len = get_mca_info_helper(mca_dev, page, len);
79 } else {
80 /* Leave it empty if MCA not detected - this should *never*
81 * happen!
82 */
83 }
84
85 if (len <= off+count) *eof = 1;
86 *start = page + off;
87 len -= off;
88 if (len>count) len = count;
89 if (len<0) len = 0;
90 return len;
91}
92
93/*--------------------------------------------------------------------*/
94
95static int mca_default_procfn(char* buf, struct mca_device *mca_dev)
96{
97 int len = 0, i;
98 int slot = mca_dev->slot;
99
100 /* Print out the basic information */
101
102 if(slot < MCA_MAX_SLOT_NR) {
103 len += sprintf(buf+len, "Slot: %d\n", slot+1);
104 } else if(slot == MCA_INTEGSCSI) {
105 len += sprintf(buf+len, "Integrated SCSI Adapter\n");
106 } else if(slot == MCA_INTEGVIDEO) {
107 len += sprintf(buf+len, "Integrated Video Adapter\n");
108 } else if(slot == MCA_MOTHERBOARD) {
109 len += sprintf(buf+len, "Motherboard\n");
110 }
111 if (mca_dev->name[0]) {
112
113 /* Drivers might register a name without /proc handler... */
114
115 len += sprintf(buf+len, "Adapter Name: %s\n",
116 mca_dev->name);
117 } else {
118 len += sprintf(buf+len, "Adapter Name: Unknown\n");
119 }
120 len += sprintf(buf+len, "Id: %02x%02x\n",
121 mca_dev->pos[1], mca_dev->pos[0]);
122 len += sprintf(buf+len, "Enabled: %s\nPOS: ",
123 mca_device_status(mca_dev) == MCA_ADAPTER_NORMAL ?
124 "Yes" : "No");
125 for(i=0; i<8; i++) {
126 len += sprintf(buf+len, "%02x ", mca_dev->pos[i]);
127 }
128 len += sprintf(buf+len, "\nDriver Installed: %s",
129 mca_device_claimed(mca_dev) ? "Yes" : "No");
130 buf[len++] = '\n';
131 buf[len] = 0;
132
133 return len;
134} /* mca_default_procfn() */
135
136static int get_mca_machine_info(char* page, char **start, off_t off,
137 int count, int *eof, void *data)
138{
139 int len = 0;
140
141 len += sprintf(page+len, "Model Id: 0x%x\n", machine_id);
142 len += sprintf(page+len, "Submodel Id: 0x%x\n", machine_submodel_id);
143 len += sprintf(page+len, "BIOS Revision: 0x%x\n", BIOS_revision);
144
145 if (len <= off+count) *eof = 1;
146 *start = page + off;
147 len -= off;
148 if (len>count) len = count;
149 if (len<0) len = 0;
150 return len;
151}
152
153static int mca_read_proc(char *page, char **start, off_t off,
154 int count, int *eof, void *data)
155{
156 struct mca_device *mca_dev = (struct mca_device *)data;
157 int len = 0;
158
159 /* Get the standard info */
160
161 len = mca_default_procfn(page, mca_dev);
162
163 /* Do any device-specific processing, if there is any */
164
165 if(mca_dev->procfn) {
166 len += mca_dev->procfn(page+len, mca_dev->slot,
167 mca_dev->proc_dev);
168 }
169 if (len <= off+count) *eof = 1;
170 *start = page + off;
171 len -= off;
172 if (len>count) len = count;
173 if (len<0) len = 0;
174 return len;
175} /* mca_read_proc() */
176
177/*--------------------------------------------------------------------*/
178
179void __init mca_do_proc_init(void)
180{
181 int i;
182 struct proc_dir_entry *proc_mca;
183 struct proc_dir_entry* node = NULL;
184 struct mca_device *mca_dev;
185
186 proc_mca = proc_mkdir("mca", NULL);
187 create_proc_read_entry("pos",0,proc_mca,get_mca_info,NULL);
188 create_proc_read_entry("machine",0,proc_mca,get_mca_machine_info,NULL);
189
190 /* Initialize /proc/mca entries for existing adapters */
191
192 for(i = 0; i < MCA_NUMADAPTERS; i++) {
193 enum MCA_AdapterStatus status;
194 mca_dev = mca_find_device_by_slot(i);
195 if(!mca_dev)
196 continue;
197
198 mca_dev->procfn = NULL;
199
200 if(i < MCA_MAX_SLOT_NR) sprintf(mca_dev->procname,"slot%d", i+1);
201 else if(i == MCA_INTEGVIDEO) sprintf(mca_dev->procname,"video");
202 else if(i == MCA_INTEGSCSI) sprintf(mca_dev->procname,"scsi");
203 else if(i == MCA_MOTHERBOARD) sprintf(mca_dev->procname,"planar");
204
205 status = mca_device_status(mca_dev);
206 if (status != MCA_ADAPTER_NORMAL &&
207 status != MCA_ADAPTER_DISABLED)
208 continue;
209
210 node = create_proc_read_entry(mca_dev->procname, 0, proc_mca,
211 mca_read_proc, (void *)mca_dev);
212
213 if(node == NULL) {
214 printk("Failed to allocate memory for MCA proc-entries!");
215 return;
216 }
217 }
218
219} /* mca_do_proc_init() */
220
221/**
222 * mca_set_adapter_procfn - Set the /proc callback
223 * @slot: slot to configure
224 * @procfn: callback function to call for /proc
225 * @dev: device information passed to the callback
226 *
227 * This sets up an information callback for /proc/mca/slot?. The
228 * function is called with the buffer, slot, and device pointer (or
229 * some equally informative context information, or nothing, if you
230 * prefer), and is expected to put useful information into the
231 * buffer. The adapter name, ID, and POS registers get printed
232 * before this is called though, so don't do it again.
233 *
234 * This should be called with a %NULL @procfn when a module
235 * unregisters, thus preventing kernel crashes and other such
236 * nastiness.
237 */
238
239void mca_set_adapter_procfn(int slot, MCA_ProcFn procfn, void* proc_dev)
240{
241 struct mca_device *mca_dev = mca_find_device_by_slot(slot);
242
243 if(!mca_dev)
244 return;
245
246 mca_dev->procfn = procfn;
247 mca_dev->proc_dev = proc_dev;
248}
249EXPORT_SYMBOL(mca_set_adapter_procfn);
generated by cgit v1.2.2 (git 2.25.0) at 2025-09-15 04:12:51 -0400