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-rw-r--r--drivers/ieee1394/cmp.c311
1 files changed, 0 insertions, 311 deletions
diff --git a/drivers/ieee1394/cmp.c b/drivers/ieee1394/cmp.c
deleted file mode 100644
index 69aed26e83a1..000000000000
--- a/drivers/ieee1394/cmp.c
+++ /dev/null
@@ -1,311 +0,0 @@
1/* -*- c-basic-offset: 8 -*-
2 *
3 * cmp.c - Connection Management Procedures
4 * Copyright (C) 2001 Kristian Høgsberg
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 */
20
21/* TODO
22 * ----
23 *
24 * - Implement IEC61883-1 output plugs and connection management.
25 * This should probably be part of the general subsystem, as it could
26 * be shared with dv1394.
27 *
28 * - Add IEC61883 unit directory when loading this module. This
29 * requires a run-time changeable config rom.
30 */
31
32#include <linux/module.h>
33#include <linux/list.h>
34#include <linux/sched.h>
35#include <linux/types.h>
36#include <linux/wait.h>
37#include <linux/interrupt.h>
38
39#include "hosts.h"
40#include "highlevel.h"
41#include "ieee1394.h"
42#include "ieee1394_core.h"
43#include "cmp.h"
44
45struct plug {
46 union {
47 struct cmp_pcr pcr;
48 quadlet_t quadlet;
49 } u;
50 void (*update)(struct cmp_pcr *plug, void *data);
51 void *data;
52};
53
54struct cmp_host {
55 struct hpsb_host *host;
56
57 union {
58 struct cmp_mpr ompr;
59 quadlet_t ompr_quadlet;
60 } u;
61 struct plug opcr[2];
62
63 union {
64 struct cmp_mpr impr;
65 quadlet_t impr_quadlet;
66 } v;
67 struct plug ipcr[2];
68};
69
70enum {
71 CMP_P2P_CONNECTION,
72 CMP_BC_CONNECTION
73};
74
75#define CSR_PCR_MAP 0x900
76#define CSR_PCR_MAP_END 0x9fc
77
78static struct hpsb_highlevel cmp_highlevel;
79
80static void cmp_add_host(struct hpsb_host *host);
81static void cmp_host_reset(struct hpsb_host *host);
82static int pcr_read(struct hpsb_host *host, int nodeid, quadlet_t *buf,
83 u64 addr, size_t length, u16 flags);
84static int pcr_lock(struct hpsb_host *host, int nodeid, quadlet_t *store,
85 u64 addr, quadlet_t data, quadlet_t arg, int extcode, u16 flags);
86
87static struct hpsb_highlevel cmp_highlevel = {
88 .name = "cmp",
89 .add_host = cmp_add_host,
90 .host_reset = cmp_host_reset,
91};
92
93static struct hpsb_address_ops pcr_ops = {
94 .read = pcr_read,
95 .lock = pcr_lock,
96};
97
98
99struct cmp_pcr *
100cmp_register_opcr(struct hpsb_host *host, int opcr_number, int payload,
101 void (*update)(struct cmp_pcr *pcr, void *data),
102 void *data)
103{
104 struct cmp_host *ch;
105 struct plug *plug;
106
107 ch = hpsb_get_hostinfo(&cmp_highlevel, host);
108
109 if (opcr_number >= ch->u.ompr.nplugs ||
110 ch->opcr[opcr_number].update != NULL)
111 return NULL;
112
113 plug = &ch->opcr[opcr_number];
114 plug->u.pcr.online = 1;
115 plug->u.pcr.bcast_count = 0;
116 plug->u.pcr.p2p_count = 0;
117 plug->u.pcr.overhead = 0;
118 plug->u.pcr.payload = payload;
119 plug->update = update;
120 plug->data = data;
121
122 return &plug->u.pcr;
123}
124
125void cmp_unregister_opcr(struct hpsb_host *host, struct cmp_pcr *opcr)
126{
127 struct cmp_host *ch;
128 struct plug *plug;
129
130 ch = hpsb_get_hostinfo(&cmp_highlevel, host);
131 plug = (struct plug *)opcr;
132 if (plug - ch->opcr >= ch->u.ompr.nplugs) BUG();
133
134 plug->u.pcr.online = 0;
135 plug->update = NULL;
136}
137
138static void reset_plugs(struct cmp_host *ch)
139{
140 int i;
141
142 ch->u.ompr.non_persistent_ext = 0xff;
143 for (i = 0; i < ch->u.ompr.nplugs; i++) {
144 ch->opcr[i].u.pcr.bcast_count = 0;
145 ch->opcr[i].u.pcr.p2p_count = 0;
146 ch->opcr[i].u.pcr.overhead = 0;
147 }
148}
149
150static void cmp_add_host(struct hpsb_host *host)
151{
152 struct cmp_host *ch = hpsb_create_hostinfo(&cmp_highlevel, host, sizeof (*ch));
153
154 if (ch == NULL) {
155 HPSB_ERR("Failed to allocate cmp_host");
156 return;
157 }
158
159 hpsb_register_addrspace(&cmp_highlevel, host, &pcr_ops,
160 CSR_REGISTER_BASE + CSR_PCR_MAP,
161 CSR_REGISTER_BASE + CSR_PCR_MAP_END);
162
163 ch->host = host;
164 ch->u.ompr.rate = IEEE1394_SPEED_100;
165 ch->u.ompr.bcast_channel_base = 63;
166 ch->u.ompr.nplugs = 2;
167
168 reset_plugs(ch);
169}
170
171static void cmp_host_reset(struct hpsb_host *host)
172{
173 struct cmp_host *ch;
174
175 ch = hpsb_get_hostinfo(&cmp_highlevel, host);
176 if (ch == NULL) {
177 HPSB_ERR("cmp: Tried to reset unknown host");
178 return;
179 }
180
181 reset_plugs(ch);
182}
183
184static int pcr_read(struct hpsb_host *host, int nodeid, quadlet_t *buf,
185 u64 addr, size_t length, u16 flags)
186{
187 int csraddr = addr - CSR_REGISTER_BASE;
188 int plug;
189 struct cmp_host *ch;
190
191 if (length != 4)
192 return RCODE_TYPE_ERROR;
193
194 ch = hpsb_get_hostinfo(&cmp_highlevel, host);
195 if (csraddr == 0x900) {
196 *buf = cpu_to_be32(ch->u.ompr_quadlet);
197 return RCODE_COMPLETE;
198 }
199 else if (csraddr < 0x904 + ch->u.ompr.nplugs * 4) {
200 plug = (csraddr - 0x904) / 4;
201 *buf = cpu_to_be32(ch->opcr[plug].u.quadlet);
202 return RCODE_COMPLETE;
203 }
204 else if (csraddr < 0x980) {
205 return RCODE_ADDRESS_ERROR;
206 }
207 else if (csraddr == 0x980) {
208 *buf = cpu_to_be32(ch->v.impr_quadlet);
209 return RCODE_COMPLETE;
210 }
211 else if (csraddr < 0x984 + ch->v.impr.nplugs * 4) {
212 plug = (csraddr - 0x984) / 4;
213 *buf = cpu_to_be32(ch->ipcr[plug].u.quadlet);
214 return RCODE_COMPLETE;
215 }
216 else
217 return RCODE_ADDRESS_ERROR;
218}
219
220static int pcr_lock(struct hpsb_host *host, int nodeid, quadlet_t *store,
221 u64 addr, quadlet_t data, quadlet_t arg, int extcode, u16 flags)
222{
223 int csraddr = addr - CSR_REGISTER_BASE;
224 int plug;
225 struct cmp_host *ch;
226
227 ch = hpsb_get_hostinfo(&cmp_highlevel, host);
228
229 if (extcode != EXTCODE_COMPARE_SWAP)
230 return RCODE_TYPE_ERROR;
231
232 if (csraddr == 0x900) {
233 /* FIXME: Ignore writes to bits 30-31 and 0-7 */
234 *store = cpu_to_be32(ch->u.ompr_quadlet);
235 if (arg == cpu_to_be32(ch->u.ompr_quadlet))
236 ch->u.ompr_quadlet = be32_to_cpu(data);
237
238 return RCODE_COMPLETE;
239 }
240 if (csraddr < 0x904 + ch->u.ompr.nplugs * 4) {
241 plug = (csraddr - 0x904) / 4;
242 *store = cpu_to_be32(ch->opcr[plug].u.quadlet);
243
244 if (arg == *store)
245 ch->opcr[plug].u.quadlet = be32_to_cpu(data);
246
247 if (be32_to_cpu(*store) != ch->opcr[plug].u.quadlet &&
248 ch->opcr[plug].update != NULL)
249 ch->opcr[plug].update(&ch->opcr[plug].u.pcr,
250 ch->opcr[plug].data);
251
252 return RCODE_COMPLETE;
253 }
254 else if (csraddr < 0x980) {
255 return RCODE_ADDRESS_ERROR;
256 }
257 else if (csraddr == 0x980) {
258 /* FIXME: Ignore writes to bits 24-31 and 0-7 */
259 *store = cpu_to_be32(ch->u.ompr_quadlet);
260 if (arg == cpu_to_be32(ch->u.ompr_quadlet))
261 ch->u.ompr_quadlet = be32_to_cpu(data);
262
263 return RCODE_COMPLETE;
264 }
265 else if (csraddr < 0x984 + ch->v.impr.nplugs * 4) {
266 plug = (csraddr - 0x984) / 4;
267 *store = cpu_to_be32(ch->ipcr[plug].u.quadlet);
268
269 if (arg == *store)
270 ch->ipcr[plug].u.quadlet = be32_to_cpu(data);
271
272 if (be32_to_cpu(*store) != ch->ipcr[plug].u.quadlet &&
273 ch->ipcr[plug].update != NULL)
274 ch->ipcr[plug].update(&ch->ipcr[plug].u.pcr,
275 ch->ipcr[plug].data);
276
277 return RCODE_COMPLETE;
278 }
279 else
280 return RCODE_ADDRESS_ERROR;
281}
282
283
284/* Module interface */
285
286MODULE_AUTHOR("Kristian Hogsberg <hogsberg@users.sf.net>");
287MODULE_DESCRIPTION("Connection Management Procedures (CMP)");
288MODULE_SUPPORTED_DEVICE("cmp");
289MODULE_LICENSE("GPL");
290
291EXPORT_SYMBOL(cmp_register_opcr);
292EXPORT_SYMBOL(cmp_unregister_opcr);
293
294static int __init cmp_init_module (void)
295{
296 hpsb_register_highlevel (&cmp_highlevel);
297
298 HPSB_INFO("Loaded CMP driver");
299
300 return 0;
301}
302
303static void __exit cmp_exit_module (void)
304{
305 hpsb_unregister_highlevel(&cmp_highlevel);
306
307 HPSB_INFO("Unloaded CMP driver");
308}
309
310module_init(cmp_init_module);
311module_exit(cmp_exit_module);
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-15 08:10:01 -0500