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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> | |
21517a57 | 17 | #include <asm/system.h> |
ff3eb55e BL |
18 | #include <asm/uaccess.h> |
19 | #include <asm/sn/sn_sal.h> | |
20 | #include <asm/sn/addrs.h> | |
21 | #include <asm/sn/io.h> | |
22 | #include <asm/sn/types.h> | |
23 | #include <asm/sn/shubio.h> | |
24 | #include <asm/sn/tiocx.h> | |
ce0a3956 BL |
25 | #include <asm/sn/l1.h> |
26 | #include <asm/sn/module.h> | |
ff3eb55e BL |
27 | #include "tio.h" |
28 | #include "xtalk/xwidgetdev.h" | |
29 | #include "xtalk/hubdev.h" | |
30 | ||
31 | #define CX_DEV_NONE 0 | |
32 | #define DEVICE_NAME "tiocx" | |
33 | #define WIDGET_ID 0 | |
34 | #define TIOCX_DEBUG 0 | |
35 | ||
36 | #if TIOCX_DEBUG | |
37 | #define DBG(fmt...) printk(KERN_ALERT fmt) | |
38 | #else | |
39 | #define DBG(fmt...) | |
40 | #endif | |
41 | ||
42 | struct device_attribute dev_attr_cxdev_control; | |
43 | ||
44 | /** | |
45 | * tiocx_match - Try to match driver id list with device. | |
46 | * @dev: device pointer | |
47 | * @drv: driver pointer | |
48 | * | |
49 | * Returns 1 if match, 0 otherwise. | |
50 | */ | |
51 | static int tiocx_match(struct device *dev, struct device_driver *drv) | |
52 | { | |
53 | struct cx_dev *cx_dev = to_cx_dev(dev); | |
54 | struct cx_drv *cx_drv = to_cx_driver(drv); | |
55 | const struct cx_device_id *ids = cx_drv->id_table; | |
56 | ||
57 | if (!ids) | |
58 | return 0; | |
59 | ||
60 | while (ids->part_num) { | |
61 | if (ids->part_num == cx_dev->cx_id.part_num) | |
62 | return 1; | |
63 | ids++; | |
64 | } | |
65 | return 0; | |
66 | ||
67 | } | |
68 | ||
6d20b035 | 69 | static int tiocx_uevent(struct device *dev, char **envp, int num_envp, |
ff3eb55e BL |
70 | char *buffer, int buffer_size) |
71 | { | |
72 | return -ENODEV; | |
73 | } | |
74 | ||
75 | static void tiocx_bus_release(struct device *dev) | |
76 | { | |
77 | kfree(to_cx_dev(dev)); | |
78 | } | |
79 | ||
ff3eb55e BL |
80 | /** |
81 | * cx_device_match - Find cx_device in the id table. | |
82 | * @ids: id table from driver | |
83 | * @cx_device: part/mfg id for the device | |
84 | * | |
85 | */ | |
86 | static const struct cx_device_id *cx_device_match(const struct cx_device_id | |
87 | *ids, | |
88 | struct cx_dev *cx_device) | |
89 | { | |
90 | /* | |
91 | * NOTES: We may want to check for CX_ANY_ID too. | |
92 | * Do we want to match against nasid too? | |
93 | * CX_DEV_NONE == 0, if the driver tries to register for | |
94 | * part/mfg == 0 we should return no-match (NULL) here. | |
95 | */ | |
96 | while (ids->part_num && ids->mfg_num) { | |
97 | if (ids->part_num == cx_device->cx_id.part_num && | |
98 | ids->mfg_num == cx_device->cx_id.mfg_num) | |
99 | return ids; | |
100 | ids++; | |
101 | } | |
102 | ||
103 | return NULL; | |
104 | } | |
105 | ||
106 | /** | |
107 | * cx_device_probe - Look for matching device. | |
108 | * Call driver probe routine if found. | |
109 | * @cx_driver: driver table (cx_drv struct) from driver | |
110 | * @cx_device: part/mfg id for the device | |
111 | */ | |
112 | static int cx_device_probe(struct device *dev) | |
113 | { | |
114 | const struct cx_device_id *id; | |
115 | struct cx_drv *cx_drv = to_cx_driver(dev->driver); | |
116 | struct cx_dev *cx_dev = to_cx_dev(dev); | |
117 | int error = 0; | |
118 | ||
119 | if (!cx_dev->driver && cx_drv->probe) { | |
120 | id = cx_device_match(cx_drv->id_table, cx_dev); | |
121 | if (id) { | |
122 | if ((error = cx_drv->probe(cx_dev, id)) < 0) | |
123 | return error; | |
124 | else | |
125 | cx_dev->driver = cx_drv; | |
126 | } | |
127 | } | |
128 | ||
129 | return error; | |
130 | } | |
131 | ||
132 | /** | |
133 | * cx_driver_remove - Remove driver from device struct. | |
134 | * @dev: device | |
135 | */ | |
136 | static int cx_driver_remove(struct device *dev) | |
137 | { | |
138 | struct cx_dev *cx_dev = to_cx_dev(dev); | |
139 | struct cx_drv *cx_drv = cx_dev->driver; | |
140 | if (cx_drv->remove) | |
141 | cx_drv->remove(cx_dev); | |
142 | cx_dev->driver = NULL; | |
143 | return 0; | |
144 | } | |
145 | ||
83dfb8b6 RK |
146 | struct bus_type tiocx_bus_type = { |
147 | .name = "tiocx", | |
148 | .match = tiocx_match, | |
149 | .uevent = tiocx_uevent, | |
150 | .probe = cx_device_probe, | |
151 | .remove = cx_driver_remove, | |
152 | }; | |
153 | ||
ff3eb55e BL |
154 | /** |
155 | * cx_driver_register - Register the driver. | |
156 | * @cx_driver: driver table (cx_drv struct) from driver | |
157 | * | |
158 | * Called from the driver init routine to register a driver. | |
159 | * The cx_drv struct contains the driver name, a pointer to | |
160 | * a table of part/mfg numbers and a pointer to the driver's | |
161 | * probe/attach routine. | |
162 | */ | |
163 | int cx_driver_register(struct cx_drv *cx_driver) | |
164 | { | |
165 | cx_driver->driver.name = cx_driver->name; | |
166 | cx_driver->driver.bus = &tiocx_bus_type; | |
ff3eb55e BL |
167 | |
168 | return driver_register(&cx_driver->driver); | |
169 | } | |
170 | ||
171 | /** | |
172 | * cx_driver_unregister - Unregister the driver. | |
173 | * @cx_driver: driver table (cx_drv struct) from driver | |
174 | */ | |
175 | int cx_driver_unregister(struct cx_drv *cx_driver) | |
176 | { | |
177 | driver_unregister(&cx_driver->driver); | |
178 | return 0; | |
179 | } | |
180 | ||
181 | /** | |
182 | * cx_device_register - Register a device. | |
183 | * @nasid: device's nasid | |
184 | * @part_num: device's part number | |
185 | * @mfg_num: device's manufacturer number | |
186 | * @hubdev: hub info associated with this device | |
25732ad4 | 187 | * @bt: board type of the device |
ff3eb55e BL |
188 | * |
189 | */ | |
190 | int | |
191 | cx_device_register(nasid_t nasid, int part_num, int mfg_num, | |
25732ad4 | 192 | struct hubdev_info *hubdev, int bt) |
ff3eb55e BL |
193 | { |
194 | struct cx_dev *cx_dev; | |
195 | ||
f96cb1f0 | 196 | cx_dev = kzalloc(sizeof(struct cx_dev), GFP_KERNEL); |
ff3eb55e BL |
197 | DBG("cx_dev= 0x%p\n", cx_dev); |
198 | if (cx_dev == NULL) | |
199 | return -ENOMEM; | |
200 | ||
201 | cx_dev->cx_id.part_num = part_num; | |
202 | cx_dev->cx_id.mfg_num = mfg_num; | |
203 | cx_dev->cx_id.nasid = nasid; | |
204 | cx_dev->hubdev = hubdev; | |
25732ad4 | 205 | cx_dev->bt = bt; |
ff3eb55e BL |
206 | |
207 | cx_dev->dev.parent = NULL; | |
208 | cx_dev->dev.bus = &tiocx_bus_type; | |
209 | cx_dev->dev.release = tiocx_bus_release; | |
c1ffb6a8 BL |
210 | snprintf(cx_dev->dev.bus_id, BUS_ID_SIZE, "%d", |
211 | cx_dev->cx_id.nasid); | |
ff3eb55e BL |
212 | device_register(&cx_dev->dev); |
213 | get_device(&cx_dev->dev); | |
214 | ||
215 | device_create_file(&cx_dev->dev, &dev_attr_cxdev_control); | |
216 | ||
217 | return 0; | |
218 | } | |
219 | ||
220 | /** | |
221 | * cx_device_unregister - Unregister a device. | |
222 | * @cx_dev: part/mfg id for the device | |
223 | */ | |
224 | int cx_device_unregister(struct cx_dev *cx_dev) | |
225 | { | |
226 | put_device(&cx_dev->dev); | |
227 | device_unregister(&cx_dev->dev); | |
228 | return 0; | |
229 | } | |
230 | ||
231 | /** | |
232 | * cx_device_reload - Reload the device. | |
233 | * @nasid: device's nasid | |
234 | * @part_num: device's part number | |
235 | * @mfg_num: device's manufacturer number | |
236 | * | |
237 | * Remove the device associated with 'nasid' from device list and then | |
238 | * call device-register with the given part/mfg numbers. | |
239 | */ | |
240 | static int cx_device_reload(struct cx_dev *cx_dev) | |
241 | { | |
ff3eb55e BL |
242 | cx_device_unregister(cx_dev); |
243 | return cx_device_register(cx_dev->cx_id.nasid, cx_dev->cx_id.part_num, | |
25732ad4 BL |
244 | cx_dev->cx_id.mfg_num, cx_dev->hubdev, |
245 | cx_dev->bt); | |
ff3eb55e BL |
246 | } |
247 | ||
53493dcf | 248 | static inline u64 tiocx_intr_alloc(nasid_t nasid, int widget, |
ff3eb55e BL |
249 | u64 sn_irq_info, |
250 | int req_irq, nasid_t req_nasid, | |
251 | int req_slice) | |
252 | { | |
253 | struct ia64_sal_retval rv; | |
254 | rv.status = 0; | |
255 | rv.v0 = 0; | |
256 | ||
257 | ia64_sal_oemcall_nolock(&rv, SN_SAL_IOIF_INTERRUPT, | |
258 | SAL_INTR_ALLOC, nasid, | |
259 | widget, sn_irq_info, req_irq, | |
260 | req_nasid, req_slice); | |
261 | return rv.status; | |
262 | } | |
263 | ||
264 | static inline void tiocx_intr_free(nasid_t nasid, int widget, | |
265 | struct sn_irq_info *sn_irq_info) | |
266 | { | |
267 | struct ia64_sal_retval rv; | |
268 | rv.status = 0; | |
269 | rv.v0 = 0; | |
270 | ||
271 | ia64_sal_oemcall_nolock(&rv, SN_SAL_IOIF_INTERRUPT, | |
272 | SAL_INTR_FREE, nasid, | |
273 | widget, sn_irq_info->irq_irq, | |
274 | sn_irq_info->irq_cookie, 0, 0); | |
275 | } | |
276 | ||
277 | struct sn_irq_info *tiocx_irq_alloc(nasid_t nasid, int widget, int irq, | |
278 | nasid_t req_nasid, int slice) | |
279 | { | |
280 | struct sn_irq_info *sn_irq_info; | |
281 | int status; | |
282 | int sn_irq_size = sizeof(struct sn_irq_info); | |
283 | ||
284 | if ((nasid & 1) == 0) | |
285 | return NULL; | |
286 | ||
8ed9b2c7 | 287 | sn_irq_info = kzalloc(sn_irq_size, GFP_KERNEL); |
ff3eb55e BL |
288 | if (sn_irq_info == NULL) |
289 | return NULL; | |
290 | ||
ff3eb55e BL |
291 | status = tiocx_intr_alloc(nasid, widget, __pa(sn_irq_info), irq, |
292 | req_nasid, slice); | |
293 | if (status) { | |
294 | kfree(sn_irq_info); | |
295 | return NULL; | |
296 | } else { | |
297 | return sn_irq_info; | |
298 | } | |
299 | } | |
300 | ||
301 | void tiocx_irq_free(struct sn_irq_info *sn_irq_info) | |
302 | { | |
53493dcf | 303 | u64 bridge = (u64) sn_irq_info->irq_bridge; |
ff3eb55e BL |
304 | nasid_t nasid = NASID_GET(bridge); |
305 | int widget; | |
306 | ||
307 | if (nasid & 1) { | |
308 | widget = TIO_SWIN_WIDGETNUM(bridge); | |
309 | tiocx_intr_free(nasid, widget, sn_irq_info); | |
310 | kfree(sn_irq_info); | |
311 | } | |
312 | } | |
313 | ||
53493dcf | 314 | u64 tiocx_dma_addr(u64 addr) |
ff3eb55e BL |
315 | { |
316 | return PHYS_TO_TIODMA(addr); | |
317 | } | |
318 | ||
53493dcf | 319 | u64 tiocx_swin_base(int nasid) |
ff3eb55e BL |
320 | { |
321 | return TIO_SWIN_BASE(nasid, TIOCX_CORELET); | |
322 | } | |
323 | ||
324 | EXPORT_SYMBOL(cx_driver_register); | |
325 | EXPORT_SYMBOL(cx_driver_unregister); | |
326 | EXPORT_SYMBOL(cx_device_register); | |
327 | EXPORT_SYMBOL(cx_device_unregister); | |
328 | EXPORT_SYMBOL(tiocx_irq_alloc); | |
329 | EXPORT_SYMBOL(tiocx_irq_free); | |
330 | EXPORT_SYMBOL(tiocx_bus_type); | |
331 | EXPORT_SYMBOL(tiocx_dma_addr); | |
332 | EXPORT_SYMBOL(tiocx_swin_base); | |
333 | ||
ff3eb55e BL |
334 | static void tio_conveyor_set(nasid_t nasid, int enable_flag) |
335 | { | |
53493dcf PB |
336 | u64 ice_frz; |
337 | u64 disable_cb = (1ull << 61); | |
ff3eb55e BL |
338 | |
339 | if (!(nasid & 1)) | |
340 | return; | |
341 | ||
342 | ice_frz = REMOTE_HUB_L(nasid, TIO_ICE_FRZ_CFG); | |
343 | if (enable_flag) { | |
344 | if (!(ice_frz & disable_cb)) /* already enabled */ | |
345 | return; | |
346 | ice_frz &= ~disable_cb; | |
347 | } else { | |
348 | if (ice_frz & disable_cb) /* already disabled */ | |
349 | return; | |
350 | ice_frz |= disable_cb; | |
351 | } | |
352 | DBG(KERN_ALERT "TIO_ICE_FRZ_CFG= 0x%lx\n", ice_frz); | |
353 | REMOTE_HUB_S(nasid, TIO_ICE_FRZ_CFG, ice_frz); | |
354 | } | |
355 | ||
356 | #define tio_conveyor_enable(nasid) tio_conveyor_set(nasid, 1) | |
357 | #define tio_conveyor_disable(nasid) tio_conveyor_set(nasid, 0) | |
358 | ||
359 | static void tio_corelet_reset(nasid_t nasid, int corelet) | |
360 | { | |
361 | if (!(nasid & 1)) | |
362 | return; | |
363 | ||
364 | REMOTE_HUB_S(nasid, TIO_ICE_PMI_TX_CFG, 1 << corelet); | |
365 | udelay(2000); | |
366 | REMOTE_HUB_S(nasid, TIO_ICE_PMI_TX_CFG, 0); | |
367 | udelay(2000); | |
368 | } | |
369 | ||
25732ad4 | 370 | static int is_fpga_tio(int nasid, int *bt) |
ce0a3956 | 371 | { |
f90aa8c4 PB |
372 | u16 ioboard_type; |
373 | s64 rc; | |
ce0a3956 | 374 | |
f90aa8c4 PB |
375 | rc = ia64_sn_sysctl_ioboard_get(nasid, &ioboard_type); |
376 | if (rc) { | |
377 | printk(KERN_WARNING "ia64_sn_sysctl_ioboard_get failed: %ld\n", | |
378 | rc); | |
379 | return 0; | |
380 | } | |
25732ad4 BL |
381 | |
382 | switch (ioboard_type) { | |
ce0a3956 BL |
383 | case L1_BRICKTYPE_SA: |
384 | case L1_BRICKTYPE_ATHENA: | |
25732ad4 BL |
385 | case L1_BOARDTYPE_DAYTONA: |
386 | *bt = ioboard_type; | |
ce0a3956 BL |
387 | return 1; |
388 | } | |
25732ad4 | 389 | |
ce0a3956 BL |
390 | return 0; |
391 | } | |
392 | ||
393 | static int bitstream_loaded(nasid_t nasid) | |
ff3eb55e | 394 | { |
53493dcf | 395 | u64 cx_credits; |
ff3eb55e BL |
396 | |
397 | cx_credits = REMOTE_HUB_L(nasid, TIO_ICE_PMI_TX_DYN_CREDIT_STAT_CB3); | |
398 | cx_credits &= TIO_ICE_PMI_TX_DYN_CREDIT_STAT_CB3_CREDIT_CNT_MASK; | |
399 | DBG("cx_credits= 0x%lx\n", cx_credits); | |
400 | ||
401 | return (cx_credits == 0xf) ? 1 : 0; | |
402 | } | |
403 | ||
404 | static int tiocx_reload(struct cx_dev *cx_dev) | |
405 | { | |
406 | int part_num = CX_DEV_NONE; | |
407 | int mfg_num = CX_DEV_NONE; | |
408 | nasid_t nasid = cx_dev->cx_id.nasid; | |
409 | ||
ce0a3956 | 410 | if (bitstream_loaded(nasid)) { |
53493dcf | 411 | u64 cx_id; |
25732ad4 BL |
412 | int rv; |
413 | ||
414 | rv = ia64_sn_sysctl_tio_clock_reset(nasid); | |
415 | if (rv) { | |
416 | printk(KERN_ALERT "CX port JTAG reset failed.\n"); | |
417 | } else { | |
53493dcf | 418 | cx_id = *(volatile u64 *) |
25732ad4 | 419 | (TIO_SWIN_BASE(nasid, TIOCX_CORELET) + |
ff3eb55e | 420 | WIDGET_ID); |
25732ad4 BL |
421 | part_num = XWIDGET_PART_NUM(cx_id); |
422 | mfg_num = XWIDGET_MFG_NUM(cx_id); | |
423 | DBG("part= 0x%x, mfg= 0x%x\n", part_num, mfg_num); | |
424 | /* just ignore it if it's a CE */ | |
425 | if (part_num == TIO_CE_ASIC_PARTNUM) | |
426 | return 0; | |
427 | } | |
ff3eb55e BL |
428 | } |
429 | ||
430 | cx_dev->cx_id.part_num = part_num; | |
431 | cx_dev->cx_id.mfg_num = mfg_num; | |
432 | ||
433 | /* | |
434 | * Delete old device and register the new one. It's ok if | |
435 | * part_num/mfg_num == CX_DEV_NONE. We want to register | |
436 | * devices in the table even if a bitstream isn't loaded. | |
437 | * That allows use to see that a bitstream isn't loaded via | |
438 | * TIOCX_IOCTL_DEV_LIST. | |
439 | */ | |
440 | return cx_device_reload(cx_dev); | |
441 | } | |
442 | ||
ff381d22 | 443 | static ssize_t show_cxdev_control(struct device *dev, struct device_attribute *attr, char *buf) |
ff3eb55e BL |
444 | { |
445 | struct cx_dev *cx_dev = to_cx_dev(dev); | |
446 | ||
25732ad4 | 447 | return sprintf(buf, "0x%x 0x%x 0x%x 0x%x\n", |
ff3eb55e | 448 | cx_dev->cx_id.nasid, |
ce0a3956 | 449 | cx_dev->cx_id.part_num, cx_dev->cx_id.mfg_num, |
25732ad4 | 450 | cx_dev->bt); |
ff3eb55e BL |
451 | } |
452 | ||
ff381d22 | 453 | static ssize_t store_cxdev_control(struct device *dev, struct device_attribute *attr, const char *buf, |
ff3eb55e BL |
454 | size_t count) |
455 | { | |
456 | int n; | |
457 | struct cx_dev *cx_dev = to_cx_dev(dev); | |
458 | ||
459 | if (!capable(CAP_SYS_ADMIN)) | |
460 | return -EPERM; | |
461 | ||
462 | if (count <= 0) | |
463 | return 0; | |
464 | ||
465 | n = simple_strtoul(buf, NULL, 0); | |
466 | ||
467 | switch (n) { | |
468 | case 1: | |
c1ffb6a8 BL |
469 | tio_corelet_reset(cx_dev->cx_id.nasid, TIOCX_CORELET); |
470 | tiocx_reload(cx_dev); | |
471 | break; | |
472 | case 2: | |
ff3eb55e BL |
473 | tiocx_reload(cx_dev); |
474 | break; | |
475 | case 3: | |
476 | tio_corelet_reset(cx_dev->cx_id.nasid, TIOCX_CORELET); | |
477 | break; | |
478 | default: | |
479 | break; | |
480 | } | |
481 | ||
482 | return count; | |
483 | } | |
484 | ||
485 | DEVICE_ATTR(cxdev_control, 0644, show_cxdev_control, store_cxdev_control); | |
486 | ||
487 | static int __init tiocx_init(void) | |
488 | { | |
489 | cnodeid_t cnodeid; | |
490 | int found_tiocx_device = 0; | |
491 | ||
21517a57 | 492 | if (!ia64_platform_is("sn2")) |
6c5e6215 | 493 | return 0; |
21517a57 | 494 | |
ff3eb55e BL |
495 | bus_register(&tiocx_bus_type); |
496 | ||
24ee0a6d | 497 | for (cnodeid = 0; cnodeid < num_cnodes; cnodeid++) { |
ff3eb55e | 498 | nasid_t nasid; |
25732ad4 | 499 | int bt; |
ff3eb55e | 500 | |
24ee0a6d | 501 | nasid = cnodeid_to_nasid(cnodeid); |
ff3eb55e | 502 | |
25732ad4 | 503 | if ((nasid & 0x1) && is_fpga_tio(nasid, &bt)) { |
ff3eb55e | 504 | struct hubdev_info *hubdev; |
ff3eb55e BL |
505 | struct xwidget_info *widgetp; |
506 | ||
507 | DBG("Found TIO at nasid 0x%x\n", nasid); | |
508 | ||
509 | hubdev = | |
510 | (struct hubdev_info *)(NODEPDA(cnodeid)->pdinfo); | |
ff3eb55e BL |
511 | |
512 | widgetp = &hubdev->hdi_xwidget_info[TIOCX_CORELET]; | |
513 | ||
514 | /* The CE hangs off of the CX port but is not an FPGA */ | |
515 | if (widgetp->xwi_hwid.part_num == TIO_CE_ASIC_PARTNUM) | |
516 | continue; | |
517 | ||
518 | tio_corelet_reset(nasid, TIOCX_CORELET); | |
519 | tio_conveyor_enable(nasid); | |
520 | ||
521 | if (cx_device_register | |
522 | (nasid, widgetp->xwi_hwid.part_num, | |
25732ad4 | 523 | widgetp->xwi_hwid.mfg_num, hubdev, bt) < 0) |
ff3eb55e BL |
524 | return -ENXIO; |
525 | else | |
526 | found_tiocx_device++; | |
527 | } | |
528 | } | |
529 | ||
530 | /* It's ok if we find zero devices. */ | |
531 | DBG("found_tiocx_device= %d\n", found_tiocx_device); | |
532 | ||
533 | return 0; | |
534 | } | |
535 | ||
66234156 | 536 | static int cx_remove_device(struct device * dev, void * data) |
ff3eb55e | 537 | { |
66234156 PM |
538 | struct cx_dev *cx_dev = to_cx_dev(dev); |
539 | device_remove_file(dev, &dev_attr_cxdev_control); | |
540 | cx_device_unregister(cx_dev); | |
541 | return 0; | |
542 | } | |
ff3eb55e | 543 | |
66234156 PM |
544 | static void __exit tiocx_exit(void) |
545 | { | |
ff3eb55e BL |
546 | DBG("tiocx_exit\n"); |
547 | ||
548 | /* | |
549 | * Unregister devices. | |
550 | */ | |
66234156 | 551 | bus_for_each_dev(&tiocx_bus_type, NULL, NULL, cx_remove_device); |
ff3eb55e BL |
552 | bus_unregister(&tiocx_bus_type); |
553 | } | |
554 | ||
c1ffb6a8 | 555 | subsys_initcall(tiocx_init); |
ff3eb55e BL |
556 | module_exit(tiocx_exit); |
557 | ||
558 | /************************************************************************ | |
559 | * Module licensing and description | |
560 | ************************************************************************/ | |
561 | MODULE_LICENSE("GPL"); | |
562 | MODULE_AUTHOR("Bruce Losure <blosure@sgi.com>"); | |
563 | MODULE_DESCRIPTION("TIOCX module"); | |
564 | MODULE_SUPPORTED_DEVICE(DEVICE_NAME); |