source: mainline/uspace/drv/block/ata_bd/main.c@ f3baab1

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since f3baab1 was 2fd26bb, checked in by Jiri Svoboda <jiri@…>, 8 years ago

Make it simpler to get parent function session repeatedly without having to cache it.
  • Property mode set to 100644
File size: 7.2 KB
Line 
1/*
2 * Copyright (c) 2013 Jiri Svoboda
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @file
30 */
31
32#include <assert.h>
33#include <stdio.h>
34#include <errno.h>
35#include <str_error.h>
36#include <ddf/driver.h>
37#include <ddf/log.h>
38#include <device/hw_res_parsed.h>
39
40#include "ata_bd.h"
41#include "main.h"
42
43static int ata_dev_add(ddf_dev_t *dev);
44static int ata_dev_remove(ddf_dev_t *dev);
45static int ata_dev_gone(ddf_dev_t *dev);
46static int ata_fun_online(ddf_fun_t *fun);
47static int ata_fun_offline(ddf_fun_t *fun);
48
49static void ata_bd_connection(ipc_callid_t, ipc_call_t *, void *);
50
51static driver_ops_t driver_ops = {
52 .dev_add = &ata_dev_add,
53 .dev_remove = &ata_dev_remove,
54 .dev_gone = &ata_dev_gone,
55 .fun_online = &ata_fun_online,
56 .fun_offline = &ata_fun_offline
57};
58
59static driver_t ata_driver = {
60 .name = NAME,
61 .driver_ops = &driver_ops
62};
63
64static int ata_get_res(ddf_dev_t *dev, ata_base_t *ata_res)
65{
66 async_sess_t *parent_sess;
67 hw_res_list_parsed_t hw_res;
68 int rc;
69
70 parent_sess = ddf_dev_parent_sess_get(dev);
71 if (parent_sess == NULL)
72 return ENOMEM;
73
74 hw_res_list_parsed_init(&hw_res);
75 rc = hw_res_get_list_parsed(parent_sess, &hw_res, 0);
76 if (rc != EOK)
77 return rc;
78
79 if (hw_res.io_ranges.count != 2) {
80 rc = EINVAL;
81 goto error;
82 }
83
84 addr_range_t *cmd_rng = &hw_res.io_ranges.ranges[0];
85 addr_range_t *ctl_rng = &hw_res.io_ranges.ranges[1];
86 ata_res->cmd = RNGABS(*cmd_rng);
87 ata_res->ctl = RNGABS(*ctl_rng);
88
89 if (RNGSZ(*ctl_rng) < sizeof(ata_ctl_t)) {
90 rc = EINVAL;
91 goto error;
92 }
93
94 if (RNGSZ(*cmd_rng) < sizeof(ata_cmd_t)) {
95 rc = EINVAL;
96 goto error;
97 }
98
99 return EOK;
100error:
101 hw_res_list_parsed_clean(&hw_res);
102 return rc;
103}
104
105/** Add new device
106 *
107 * @param dev New device
108 * @return EOK on success or negative error code.
109 */
110static int ata_dev_add(ddf_dev_t *dev)
111{
112 ata_ctrl_t *ctrl;
113 ata_base_t res;
114 int rc;
115
116 rc = ata_get_res(dev, &res);
117 if (rc != EOK) {
118 ddf_msg(LVL_ERROR, "Invalid HW resource configuration.");
119 return EINVAL;
120 }
121
122 ctrl = ddf_dev_data_alloc(dev, sizeof(ata_ctrl_t));
123 if (ctrl == NULL) {
124 ddf_msg(LVL_ERROR, "Failed allocating soft state.");
125 rc = ENOMEM;
126 goto error;
127 }
128
129 ctrl->dev = dev;
130
131 rc = ata_ctrl_init(ctrl, &res);
132 if (rc != EOK) {
133 ddf_msg(LVL_ERROR, "Failed initializing ATA controller.");
134 rc = EIO;
135 goto error;
136 }
137
138 return EOK;
139error:
140 return rc;
141}
142
143static char *ata_fun_name(disk_t *disk)
144{
145 char *fun_name;
146
147 if (asprintf(&fun_name, "d%u", disk->disk_id) < 0)
148 return NULL;
149
150 return fun_name;
151}
152
153int ata_fun_create(disk_t *disk)
154{
155 ata_ctrl_t *ctrl = disk->ctrl;
156 int rc;
157 char *fun_name = NULL;
158 ddf_fun_t *fun = NULL;
159 ata_fun_t *afun = NULL;
160
161 fun_name = ata_fun_name(disk);
162 if (fun_name == NULL) {
163 ddf_msg(LVL_ERROR, "Out of memory.");
164 rc = ENOMEM;
165 goto error;
166 }
167
168 fun = ddf_fun_create(ctrl->dev, fun_exposed, fun_name);
169 if (fun == NULL) {
170 ddf_msg(LVL_ERROR, "Failed creating DDF function.");
171 rc = ENOMEM;
172 goto error;
173 }
174
175 /* Allocate soft state */
176 afun = ddf_fun_data_alloc(fun, sizeof(ata_fun_t));
177 if (afun == NULL) {
178 ddf_msg(LVL_ERROR, "Failed allocating softstate.");
179 rc = ENOMEM;
180 goto error;
181 }
182
183 afun->fun = fun;
184 afun->disk = disk;
185
186 bd_srvs_init(&afun->bds);
187 afun->bds.ops = &ata_bd_ops;
188 afun->bds.sarg = disk;
189
190 /* Set up a connection handler. */
191 ddf_fun_set_conn_handler(fun, ata_bd_connection);
192
193 rc = ddf_fun_bind(fun);
194 if (rc != EOK) {
195 ddf_msg(LVL_ERROR, "Failed binding DDF function %s: %s",
196 fun_name, str_error(rc));
197 goto error;
198 }
199
200 ddf_fun_add_to_category(fun, "disk");
201
202 free(fun_name);
203 disk->afun = afun;
204 return EOK;
205error:
206 if (fun != NULL)
207 ddf_fun_destroy(fun);
208 if (fun_name != NULL)
209 free(fun_name);
210
211 return rc;
212}
213
214int ata_fun_remove(disk_t *disk)
215{
216 int rc;
217 char *fun_name;
218
219 if (disk->afun == NULL)
220 return EOK;
221
222 fun_name = ata_fun_name(disk);
223 if (fun_name == NULL) {
224 ddf_msg(LVL_ERROR, "Out of memory.");
225 rc = ENOMEM;
226 goto error;
227 }
228
229 ddf_msg(LVL_DEBUG, "ata_fun_remove(%p, '%s')", disk, fun_name);
230 rc = ddf_fun_offline(disk->afun->fun);
231 if (rc != EOK) {
232 ddf_msg(LVL_ERROR, "Error offlining function '%s'.", fun_name);
233 goto error;
234 }
235
236 rc = ddf_fun_unbind(disk->afun->fun);
237 if (rc != EOK) {
238 ddf_msg(LVL_ERROR, "Failed unbinding function '%s'.", fun_name);
239 goto error;
240 }
241
242 ddf_fun_destroy(disk->afun->fun);
243 disk->afun = NULL;
244 free(fun_name);
245 return EOK;
246error:
247 if (fun_name != NULL)
248 free(fun_name);
249 return rc;
250}
251
252int ata_fun_unbind(disk_t *disk)
253{
254 int rc;
255 char *fun_name;
256
257 if (disk->afun == NULL)
258 return EOK;
259
260 fun_name = ata_fun_name(disk);
261 if (fun_name == NULL) {
262 ddf_msg(LVL_ERROR, "Out of memory.");
263 rc = ENOMEM;
264 goto error;
265 }
266
267 ddf_msg(LVL_DEBUG, "ata_fun_unbind(%p, '%s')", disk, fun_name);
268 rc = ddf_fun_unbind(disk->afun->fun);
269 if (rc != EOK) {
270 ddf_msg(LVL_ERROR, "Failed unbinding function '%s'.", fun_name);
271 goto error;
272 }
273
274 ddf_fun_destroy(disk->afun->fun);
275 disk->afun = NULL;
276 free(fun_name);
277 return EOK;
278error:
279 if (fun_name != NULL)
280 free(fun_name);
281 return rc;
282}
283
284static int ata_dev_remove(ddf_dev_t *dev)
285{
286 ata_ctrl_t *ctrl = (ata_ctrl_t *)ddf_dev_data_get(dev);
287
288 ddf_msg(LVL_DEBUG, "ata_dev_remove(%p)", dev);
289
290 return ata_ctrl_remove(ctrl);
291}
292
293static int ata_dev_gone(ddf_dev_t *dev)
294{
295 ata_ctrl_t *ctrl = (ata_ctrl_t *)ddf_dev_data_get(dev);
296
297 ddf_msg(LVL_DEBUG, "ata_dev_gone(%p)", dev);
298
299 return ata_ctrl_gone(ctrl);
300}
301
302static int ata_fun_online(ddf_fun_t *fun)
303{
304 ddf_msg(LVL_DEBUG, "ata_fun_online()");
305 return ddf_fun_online(fun);
306}
307
308static int ata_fun_offline(ddf_fun_t *fun)
309{
310 ddf_msg(LVL_DEBUG, "ata_fun_offline()");
311 return ddf_fun_offline(fun);
312}
313
314/** Block device connection handler */
315static void ata_bd_connection(ipc_callid_t iid, ipc_call_t *icall, void *arg)
316{
317 ata_fun_t *afun;
318
319 afun = (ata_fun_t *) ddf_fun_data_get((ddf_fun_t *)arg);
320 bd_conn(iid, icall, &afun->bds);
321}
322
323int main(int argc, char *argv[])
324{
325 printf(NAME ": HelenOS ATA(PI) device driver\n");
326 ddf_log_init(NAME);
327 return ddf_driver_main(&ata_driver);
328}
329
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