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Commit | Line | Data |
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ff3eb55e BL |
1 | /* |
2 | * This file is subject to the terms and conditions of the GNU General Public | |
3 | * License. See the file "COPYING" in the main directory of this archive | |
4 | * for more details. | |
5 | * | |
6 | * Copyright (c) 2005 Silicon Graphics, Inc. All rights reserved. | |
7 | */ | |
8 | ||
9 | #include <linux/module.h> | |
10 | #include <linux/kernel.h> | |
ff3eb55e BL |
11 | #include <linux/slab.h> |
12 | #include <linux/spinlock.h> | |
13 | #include <linux/proc_fs.h> | |
a9415644 | 14 | #include <linux/capability.h> |
ff3eb55e BL |
15 | #include <linux/device.h> |
16 | #include <linux/delay.h> | |
7c0f6ba6 | 17 | #include <linux/uaccess.h> |
ff3eb55e BL |
18 | #include <asm/sn/sn_sal.h> |
19 | #include <asm/sn/addrs.h> | |
20 | #include <asm/sn/io.h> | |
21 | #include <asm/sn/types.h> | |
22 | #include <asm/sn/shubio.h> | |
23 | #include <asm/sn/tiocx.h> | |
ce0a3956 BL |
24 | #include <asm/sn/l1.h> |
25 | #include <asm/sn/module.h> | |
ff3eb55e BL |
26 | #include "tio.h" |
27 | #include "xtalk/xwidgetdev.h" | |
28 | #include "xtalk/hubdev.h" | |
29 | ||
30 | #define CX_DEV_NONE 0 | |
31 | #define DEVICE_NAME "tiocx" | |
32 | #define WIDGET_ID 0 | |
33 | #define TIOCX_DEBUG 0 | |
34 | ||
35 | #if TIOCX_DEBUG | |
36 | #define DBG(fmt...) printk(KERN_ALERT fmt) | |
37 | #else | |
38 | #define DBG(fmt...) | |
39 | #endif | |
40 | ||
41 | struct device_attribute dev_attr_cxdev_control; | |
42 | ||
43 | /** | |
44 | * tiocx_match - Try to match driver id list with device. | |
45 | * @dev: device pointer | |
46 | * @drv: driver pointer | |
47 | * | |
48 | * Returns 1 if match, 0 otherwise. | |
49 | */ | |
50 | static int tiocx_match(struct device *dev, struct device_driver *drv) | |
51 | { | |
52 | struct cx_dev *cx_dev = to_cx_dev(dev); | |
53 | struct cx_drv *cx_drv = to_cx_driver(drv); | |
54 | const struct cx_device_id *ids = cx_drv->id_table; | |
55 | ||
56 | if (!ids) | |
57 | return 0; | |
58 | ||
59 | while (ids->part_num) { | |
60 | if (ids->part_num == cx_dev->cx_id.part_num) | |
61 | return 1; | |
62 | ids++; | |
63 | } | |
64 | return 0; | |
65 | ||
66 | } | |
67 | ||
7eff2e7a | 68 | static int tiocx_uevent(struct device *dev, struct kobj_uevent_env *env) |
ff3eb55e BL |
69 | { |
70 | return -ENODEV; | |
71 | } | |
72 | ||
73 | static void tiocx_bus_release(struct device *dev) | |
74 | { | |
75 | kfree(to_cx_dev(dev)); | |
76 | } | |
77 | ||
ff3eb55e BL |
78 | /** |
79 | * cx_device_match - Find cx_device in the id table. | |
80 | * @ids: id table from driver | |
81 | * @cx_device: part/mfg id for the device | |
82 | * | |
83 | */ | |
84 | static const struct cx_device_id *cx_device_match(const struct cx_device_id | |
85 | *ids, | |
86 | struct cx_dev *cx_device) | |
87 | { | |
88 | /* | |
89 | * NOTES: We may want to check for CX_ANY_ID too. | |
90 | * Do we want to match against nasid too? | |
91 | * CX_DEV_NONE == 0, if the driver tries to register for | |
92 | * part/mfg == 0 we should return no-match (NULL) here. | |
93 | */ | |
94 | while (ids->part_num && ids->mfg_num) { | |
95 | if (ids->part_num == cx_device->cx_id.part_num && | |
96 | ids->mfg_num == cx_device->cx_id.mfg_num) | |
97 | return ids; | |
98 | ids++; | |
99 | } | |
100 | ||
101 | return NULL; | |
102 | } | |
103 | ||
104 | /** | |
105 | * cx_device_probe - Look for matching device. | |
106 | * Call driver probe routine if found. | |
107 | * @cx_driver: driver table (cx_drv struct) from driver | |
108 | * @cx_device: part/mfg id for the device | |
109 | */ | |
110 | static int cx_device_probe(struct device *dev) | |
111 | { | |
112 | const struct cx_device_id *id; | |
113 | struct cx_drv *cx_drv = to_cx_driver(dev->driver); | |
114 | struct cx_dev *cx_dev = to_cx_dev(dev); | |
115 | int error = 0; | |
116 | ||
117 | if (!cx_dev->driver && cx_drv->probe) { | |
118 | id = cx_device_match(cx_drv->id_table, cx_dev); | |
119 | if (id) { | |
120 | if ((error = cx_drv->probe(cx_dev, id)) < 0) | |
121 | return error; | |
122 | else | |
123 | cx_dev->driver = cx_drv; | |
124 | } | |
125 | } | |
126 | ||
127 | return error; | |
128 | } | |
129 | ||
130 | /** | |
131 | * cx_driver_remove - Remove driver from device struct. | |
132 | * @dev: device | |
133 | */ | |
134 | static int cx_driver_remove(struct device *dev) | |
135 | { | |
136 | struct cx_dev *cx_dev = to_cx_dev(dev); | |
137 | struct cx_drv *cx_drv = cx_dev->driver; | |
138 | if (cx_drv->remove) | |
139 | cx_drv->remove(cx_dev); | |
140 | cx_dev->driver = NULL; | |
141 | return 0; | |
142 | } | |
143 | ||
83dfb8b6 RK |
144 | struct bus_type tiocx_bus_type = { |
145 | .name = "tiocx", | |
146 | .match = tiocx_match, | |
147 | .uevent = tiocx_uevent, | |
148 | .probe = cx_device_probe, | |
149 | .remove = cx_driver_remove, | |
150 | }; | |
151 | ||
ff3eb55e BL |
152 | /** |
153 | * cx_driver_register - Register the driver. | |
154 | * @cx_driver: driver table (cx_drv struct) from driver | |
155 | * | |
156 | * Called from the driver init routine to register a driver. | |
157 | * The cx_drv struct contains the driver name, a pointer to | |
158 | * a table of part/mfg numbers and a pointer to the driver's | |
159 | * probe/attach routine. | |
160 | */ | |
161 | int cx_driver_register(struct cx_drv *cx_driver) | |
162 | { | |
163 | cx_driver->driver.name = cx_driver->name; | |
164 | cx_driver->driver.bus = &tiocx_bus_type; | |
ff3eb55e BL |
165 | |
166 | return driver_register(&cx_driver->driver); | |
167 | } | |
168 | ||
169 | /** | |
170 | * cx_driver_unregister - Unregister the driver. | |
171 | * @cx_driver: driver table (cx_drv struct) from driver | |
172 | */ | |
173 | int cx_driver_unregister(struct cx_drv *cx_driver) | |
174 | { | |
175 | driver_unregister(&cx_driver->driver); | |
176 | return 0; | |
177 | } | |
178 | ||
179 | /** | |
180 | * cx_device_register - Register a device. | |
181 | * @nasid: device's nasid | |
182 | * @part_num: device's part number | |
183 | * @mfg_num: device's manufacturer number | |
184 | * @hubdev: hub info associated with this device | |
25732ad4 | 185 | * @bt: board type of the device |
ff3eb55e BL |
186 | * |
187 | */ | |
188 | int | |
189 | cx_device_register(nasid_t nasid, int part_num, int mfg_num, | |
25732ad4 | 190 | struct hubdev_info *hubdev, int bt) |
ff3eb55e BL |
191 | { |
192 | struct cx_dev *cx_dev; | |
454ca604 | 193 | int r; |
ff3eb55e | 194 | |
f96cb1f0 | 195 | cx_dev = kzalloc(sizeof(struct cx_dev), GFP_KERNEL); |
ff3eb55e BL |
196 | DBG("cx_dev= 0x%p\n", cx_dev); |
197 | if (cx_dev == NULL) | |
198 | return -ENOMEM; | |
199 | ||
200 | cx_dev->cx_id.part_num = part_num; | |
201 | cx_dev->cx_id.mfg_num = mfg_num; | |
202 | cx_dev->cx_id.nasid = nasid; | |
203 | cx_dev->hubdev = hubdev; | |
25732ad4 | 204 | cx_dev->bt = bt; |
ff3eb55e BL |
205 | |
206 | cx_dev->dev.parent = NULL; | |
207 | cx_dev->dev.bus = &tiocx_bus_type; | |
208 | cx_dev->dev.release = tiocx_bus_release; | |
48ef2bb4 | 209 | dev_set_name(&cx_dev->dev, "%d", cx_dev->cx_id.nasid); |
454ca604 PG |
210 | r = device_register(&cx_dev->dev); |
211 | if (r) { | |
212 | kfree(cx_dev); | |
213 | return r; | |
214 | } | |
ff3eb55e BL |
215 | get_device(&cx_dev->dev); |
216 | ||
217 | device_create_file(&cx_dev->dev, &dev_attr_cxdev_control); | |
218 | ||
219 | return 0; | |
220 | } | |
221 | ||
222 | /** | |
223 | * cx_device_unregister - Unregister a device. | |
224 | * @cx_dev: part/mfg id for the device | |
225 | */ | |
226 | int cx_device_unregister(struct cx_dev *cx_dev) | |
227 | { | |
228 | put_device(&cx_dev->dev); | |
229 | device_unregister(&cx_dev->dev); | |
230 | return 0; | |
231 | } | |
232 | ||
233 | /** | |
234 | * cx_device_reload - Reload the device. | |
235 | * @nasid: device's nasid | |
236 | * @part_num: device's part number | |
237 | * @mfg_num: device's manufacturer number | |
238 | * | |
239 | * Remove the device associated with 'nasid' from device list and then | |
240 | * call device-register with the given part/mfg numbers. | |
241 | */ | |
242 | static int cx_device_reload(struct cx_dev *cx_dev) | |
243 | { | |
ff3eb55e BL |
244 | cx_device_unregister(cx_dev); |
245 | return cx_device_register(cx_dev->cx_id.nasid, cx_dev->cx_id.part_num, | |
25732ad4 BL |
246 | cx_dev->cx_id.mfg_num, cx_dev->hubdev, |
247 | cx_dev->bt); | |
ff3eb55e BL |
248 | } |
249 | ||
53493dcf | 250 | static inline u64 tiocx_intr_alloc(nasid_t nasid, int widget, |
ff3eb55e BL |
251 | u64 sn_irq_info, |
252 | int req_irq, nasid_t req_nasid, | |
253 | int req_slice) | |
254 | { | |
255 | struct ia64_sal_retval rv; | |
256 | rv.status = 0; | |
257 | rv.v0 = 0; | |
258 | ||
259 | ia64_sal_oemcall_nolock(&rv, SN_SAL_IOIF_INTERRUPT, | |
260 | SAL_INTR_ALLOC, nasid, | |
261 | widget, sn_irq_info, req_irq, | |
262 | req_nasid, req_slice); | |
263 | return rv.status; | |
264 | } | |
265 | ||
266 | static inline void tiocx_intr_free(nasid_t nasid, int widget, | |
267 | struct sn_irq_info *sn_irq_info) | |
268 | { | |
269 | struct ia64_sal_retval rv; | |
270 | rv.status = 0; | |
271 | rv.v0 = 0; | |
272 | ||
273 | ia64_sal_oemcall_nolock(&rv, SN_SAL_IOIF_INTERRUPT, | |
274 | SAL_INTR_FREE, nasid, | |
275 | widget, sn_irq_info->irq_irq, | |
276 | sn_irq_info->irq_cookie, 0, 0); | |
277 | } | |
278 | ||
279 | struct sn_irq_info *tiocx_irq_alloc(nasid_t nasid, int widget, int irq, | |
280 | nasid_t req_nasid, int slice) | |
281 | { | |
282 | struct sn_irq_info *sn_irq_info; | |
283 | int status; | |
284 | int sn_irq_size = sizeof(struct sn_irq_info); | |
285 | ||
286 | if ((nasid & 1) == 0) | |
287 | return NULL; | |
288 | ||
8ed9b2c7 | 289 | sn_irq_info = kzalloc(sn_irq_size, GFP_KERNEL); |
ff3eb55e BL |
290 | if (sn_irq_info == NULL) |
291 | return NULL; | |
292 | ||
ff3eb55e BL |
293 | status = tiocx_intr_alloc(nasid, widget, __pa(sn_irq_info), irq, |
294 | req_nasid, slice); | |
295 | if (status) { | |
296 | kfree(sn_irq_info); | |
297 | return NULL; | |
298 | } else { | |
299 | return sn_irq_info; | |
300 | } | |
301 | } | |
302 | ||
303 | void tiocx_irq_free(struct sn_irq_info *sn_irq_info) | |
304 | { | |
53493dcf | 305 | u64 bridge = (u64) sn_irq_info->irq_bridge; |
ff3eb55e BL |
306 | nasid_t nasid = NASID_GET(bridge); |
307 | int widget; | |
308 | ||
309 | if (nasid & 1) { | |
310 | widget = TIO_SWIN_WIDGETNUM(bridge); | |
311 | tiocx_intr_free(nasid, widget, sn_irq_info); | |
312 | kfree(sn_irq_info); | |
313 | } | |
314 | } | |
315 | ||
53493dcf | 316 | u64 tiocx_dma_addr(u64 addr) |
ff3eb55e BL |
317 | { |
318 | return PHYS_TO_TIODMA(addr); | |
319 | } | |
320 | ||
53493dcf | 321 | u64 tiocx_swin_base(int nasid) |
ff3eb55e BL |
322 | { |
323 | return TIO_SWIN_BASE(nasid, TIOCX_CORELET); | |
324 | } | |
325 | ||
326 | EXPORT_SYMBOL(cx_driver_register); | |
327 | EXPORT_SYMBOL(cx_driver_unregister); | |
328 | EXPORT_SYMBOL(cx_device_register); | |
329 | EXPORT_SYMBOL(cx_device_unregister); | |
330 | EXPORT_SYMBOL(tiocx_irq_alloc); | |
331 | EXPORT_SYMBOL(tiocx_irq_free); | |
332 | EXPORT_SYMBOL(tiocx_bus_type); | |
333 | EXPORT_SYMBOL(tiocx_dma_addr); | |
334 | EXPORT_SYMBOL(tiocx_swin_base); | |
335 | ||
ff3eb55e BL |
336 | static void tio_conveyor_set(nasid_t nasid, int enable_flag) |
337 | { | |
53493dcf PB |
338 | u64 ice_frz; |
339 | u64 disable_cb = (1ull << 61); | |
ff3eb55e BL |
340 | |
341 | if (!(nasid & 1)) | |
342 | return; | |
343 | ||
344 | ice_frz = REMOTE_HUB_L(nasid, TIO_ICE_FRZ_CFG); | |
345 | if (enable_flag) { | |
346 | if (!(ice_frz & disable_cb)) /* already enabled */ | |
347 | return; | |
348 | ice_frz &= ~disable_cb; | |
349 | } else { | |
350 | if (ice_frz & disable_cb) /* already disabled */ | |
351 | return; | |
352 | ice_frz |= disable_cb; | |
353 | } | |
354 | DBG(KERN_ALERT "TIO_ICE_FRZ_CFG= 0x%lx\n", ice_frz); | |
355 | REMOTE_HUB_S(nasid, TIO_ICE_FRZ_CFG, ice_frz); | |
356 | } | |
357 | ||
358 | #define tio_conveyor_enable(nasid) tio_conveyor_set(nasid, 1) | |
359 | #define tio_conveyor_disable(nasid) tio_conveyor_set(nasid, 0) | |
360 | ||
361 | static void tio_corelet_reset(nasid_t nasid, int corelet) | |
362 | { | |
363 | if (!(nasid & 1)) | |
364 | return; | |
365 | ||
366 | REMOTE_HUB_S(nasid, TIO_ICE_PMI_TX_CFG, 1 << corelet); | |
367 | udelay(2000); | |
368 | REMOTE_HUB_S(nasid, TIO_ICE_PMI_TX_CFG, 0); | |
369 | udelay(2000); | |
370 | } | |
371 | ||
25732ad4 | 372 | static int is_fpga_tio(int nasid, int *bt) |
ce0a3956 | 373 | { |
256a7e09 | 374 | u16 uninitialized_var(ioboard_type); /* GCC be quiet */ |
e088a4ad | 375 | long rc; |
ce0a3956 | 376 | |
f90aa8c4 PB |
377 | rc = ia64_sn_sysctl_ioboard_get(nasid, &ioboard_type); |
378 | if (rc) { | |
379 | printk(KERN_WARNING "ia64_sn_sysctl_ioboard_get failed: %ld\n", | |
380 | rc); | |
381 | return 0; | |
382 | } | |
25732ad4 BL |
383 | |
384 | switch (ioboard_type) { | |
ce0a3956 BL |
385 | case L1_BRICKTYPE_SA: |
386 | case L1_BRICKTYPE_ATHENA: | |
25732ad4 BL |
387 | case L1_BOARDTYPE_DAYTONA: |
388 | *bt = ioboard_type; | |
ce0a3956 BL |
389 | return 1; |
390 | } | |
25732ad4 | 391 | |
ce0a3956 BL |
392 | return 0; |
393 | } | |
394 | ||
395 | static int bitstream_loaded(nasid_t nasid) | |
ff3eb55e | 396 | { |
53493dcf | 397 | u64 cx_credits; |
ff3eb55e BL |
398 | |
399 | cx_credits = REMOTE_HUB_L(nasid, TIO_ICE_PMI_TX_DYN_CREDIT_STAT_CB3); | |
400 | cx_credits &= TIO_ICE_PMI_TX_DYN_CREDIT_STAT_CB3_CREDIT_CNT_MASK; | |
401 | DBG("cx_credits= 0x%lx\n", cx_credits); | |
402 | ||
403 | return (cx_credits == 0xf) ? 1 : 0; | |
404 | } | |
405 | ||
406 | static int tiocx_reload(struct cx_dev *cx_dev) | |
407 | { | |
408 | int part_num = CX_DEV_NONE; | |
409 | int mfg_num = CX_DEV_NONE; | |
410 | nasid_t nasid = cx_dev->cx_id.nasid; | |
411 | ||
ce0a3956 | 412 | if (bitstream_loaded(nasid)) { |
53493dcf | 413 | u64 cx_id; |
25732ad4 BL |
414 | int rv; |
415 | ||
416 | rv = ia64_sn_sysctl_tio_clock_reset(nasid); | |
417 | if (rv) { | |
418 | printk(KERN_ALERT "CX port JTAG reset failed.\n"); | |
419 | } else { | |
53493dcf | 420 | cx_id = *(volatile u64 *) |
25732ad4 | 421 | (TIO_SWIN_BASE(nasid, TIOCX_CORELET) + |
ff3eb55e | 422 | WIDGET_ID); |
25732ad4 BL |
423 | part_num = XWIDGET_PART_NUM(cx_id); |
424 | mfg_num = XWIDGET_MFG_NUM(cx_id); | |
425 | DBG("part= 0x%x, mfg= 0x%x\n", part_num, mfg_num); | |
426 | /* just ignore it if it's a CE */ | |
427 | if (part_num == TIO_CE_ASIC_PARTNUM) | |
428 | return 0; | |
429 | } | |
ff3eb55e BL |
430 | } |
431 | ||
432 | cx_dev->cx_id.part_num = part_num; | |
433 | cx_dev->cx_id.mfg_num = mfg_num; | |
434 | ||
435 | /* | |
436 | * Delete old device and register the new one. It's ok if | |
437 | * part_num/mfg_num == CX_DEV_NONE. We want to register | |
438 | * devices in the table even if a bitstream isn't loaded. | |
439 | * That allows use to see that a bitstream isn't loaded via | |
440 | * TIOCX_IOCTL_DEV_LIST. | |
441 | */ | |
442 | return cx_device_reload(cx_dev); | |
443 | } | |
444 | ||
ff381d22 | 445 | static ssize_t show_cxdev_control(struct device *dev, struct device_attribute *attr, char *buf) |
ff3eb55e BL |
446 | { |
447 | struct cx_dev *cx_dev = to_cx_dev(dev); | |
448 | ||
25732ad4 | 449 | return sprintf(buf, "0x%x 0x%x 0x%x 0x%x\n", |
ff3eb55e | 450 | cx_dev->cx_id.nasid, |
ce0a3956 | 451 | cx_dev->cx_id.part_num, cx_dev->cx_id.mfg_num, |
25732ad4 | 452 | cx_dev->bt); |
ff3eb55e BL |
453 | } |
454 | ||
ff381d22 | 455 | static ssize_t store_cxdev_control(struct device *dev, struct device_attribute *attr, const char *buf, |
ff3eb55e BL |
456 | size_t count) |
457 | { | |
458 | int n; | |
459 | struct cx_dev *cx_dev = to_cx_dev(dev); | |
460 | ||
461 | if (!capable(CAP_SYS_ADMIN)) | |
462 | return -EPERM; | |
463 | ||
464 | if (count <= 0) | |
465 | return 0; | |
466 | ||
467 | n = simple_strtoul(buf, NULL, 0); | |
468 | ||
469 | switch (n) { | |
470 | case 1: | |
c1ffb6a8 BL |
471 | tio_corelet_reset(cx_dev->cx_id.nasid, TIOCX_CORELET); |
472 | tiocx_reload(cx_dev); | |
473 | break; | |
474 | case 2: | |
ff3eb55e BL |
475 | tiocx_reload(cx_dev); |
476 | break; | |
477 | case 3: | |
478 | tio_corelet_reset(cx_dev->cx_id.nasid, TIOCX_CORELET); | |
479 | break; | |
480 | default: | |
481 | break; | |
482 | } | |
483 | ||
484 | return count; | |
485 | } | |
486 | ||
487 | DEVICE_ATTR(cxdev_control, 0644, show_cxdev_control, store_cxdev_control); | |
488 | ||
489 | static int __init tiocx_init(void) | |
490 | { | |
491 | cnodeid_t cnodeid; | |
492 | int found_tiocx_device = 0; | |
d7c6797f | 493 | int err; |
ff3eb55e | 494 | |
21517a57 | 495 | if (!ia64_platform_is("sn2")) |
6c5e6215 | 496 | return 0; |
21517a57 | 497 | |
d7c6797f JK |
498 | err = bus_register(&tiocx_bus_type); |
499 | if (err) | |
500 | return err; | |
ff3eb55e | 501 | |
24ee0a6d | 502 | for (cnodeid = 0; cnodeid < num_cnodes; cnodeid++) { |
ff3eb55e | 503 | nasid_t nasid; |
25732ad4 | 504 | int bt; |
ff3eb55e | 505 | |
24ee0a6d | 506 | nasid = cnodeid_to_nasid(cnodeid); |
ff3eb55e | 507 | |
25732ad4 | 508 | if ((nasid & 0x1) && is_fpga_tio(nasid, &bt)) { |
ff3eb55e | 509 | struct hubdev_info *hubdev; |
ff3eb55e BL |
510 | struct xwidget_info *widgetp; |
511 | ||
512 | DBG("Found TIO at nasid 0x%x\n", nasid); | |
513 | ||
514 | hubdev = | |
515 | (struct hubdev_info *)(NODEPDA(cnodeid)->pdinfo); | |
ff3eb55e BL |
516 | |
517 | widgetp = &hubdev->hdi_xwidget_info[TIOCX_CORELET]; | |
518 | ||
519 | /* The CE hangs off of the CX port but is not an FPGA */ | |
520 | if (widgetp->xwi_hwid.part_num == TIO_CE_ASIC_PARTNUM) | |
521 | continue; | |
522 | ||
523 | tio_corelet_reset(nasid, TIOCX_CORELET); | |
524 | tio_conveyor_enable(nasid); | |
525 | ||
526 | if (cx_device_register | |
527 | (nasid, widgetp->xwi_hwid.part_num, | |
25732ad4 | 528 | widgetp->xwi_hwid.mfg_num, hubdev, bt) < 0) |
ff3eb55e BL |
529 | return -ENXIO; |
530 | else | |
531 | found_tiocx_device++; | |
532 | } | |
533 | } | |
534 | ||
535 | /* It's ok if we find zero devices. */ | |
536 | DBG("found_tiocx_device= %d\n", found_tiocx_device); | |
537 | ||
538 | return 0; | |
539 | } | |
540 | ||
66234156 | 541 | static int cx_remove_device(struct device * dev, void * data) |
ff3eb55e | 542 | { |
66234156 PM |
543 | struct cx_dev *cx_dev = to_cx_dev(dev); |
544 | device_remove_file(dev, &dev_attr_cxdev_control); | |
545 | cx_device_unregister(cx_dev); | |
546 | return 0; | |
547 | } | |
ff3eb55e | 548 | |
66234156 PM |
549 | static void __exit tiocx_exit(void) |
550 | { | |
ff3eb55e BL |
551 | DBG("tiocx_exit\n"); |
552 | ||
553 | /* | |
554 | * Unregister devices. | |
555 | */ | |
66234156 | 556 | bus_for_each_dev(&tiocx_bus_type, NULL, NULL, cx_remove_device); |
ff3eb55e BL |
557 | bus_unregister(&tiocx_bus_type); |
558 | } | |
559 | ||
8ea6091f | 560 | fs_initcall(tiocx_init); |
ff3eb55e BL |
561 | module_exit(tiocx_exit); |
562 | ||
563 | /************************************************************************ | |
564 | * Module licensing and description | |
565 | ************************************************************************/ | |
566 | MODULE_LICENSE("GPL"); | |
567 | MODULE_AUTHOR("Bruce Losure <blosure@sgi.com>"); | |
568 | MODULE_DESCRIPTION("TIOCX module"); | |
569 | MODULE_SUPPORTED_DEVICE(DEVICE_NAME); |