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1da177e4 LT |
1 | /* |
2 | * Copyright (c) 2001-2002 by David Brownell | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify it | |
5 | * under the terms of the GNU General Public License as published by the | |
6 | * Free Software Foundation; either version 2 of the License, or (at your | |
7 | * option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, but | |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
11 | * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 | * for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software Foundation, | |
16 | * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
17 | */ | |
18 | ||
19 | ||
20 | #ifdef __KERNEL__ | |
21 | ||
22 | /* This file contains declarations of usbcore internals that are mostly | |
23 | * used or exposed by Host Controller Drivers. | |
24 | */ | |
25 | ||
26 | /* | |
27 | * USB Packet IDs (PIDs) | |
28 | */ | |
29 | #define USB_PID_UNDEF_0 0xf0 | |
30 | #define USB_PID_OUT 0xe1 | |
31 | #define USB_PID_ACK 0xd2 | |
32 | #define USB_PID_DATA0 0xc3 | |
33 | #define USB_PID_PING 0xb4 /* USB 2.0 */ | |
34 | #define USB_PID_SOF 0xa5 | |
35 | #define USB_PID_NYET 0x96 /* USB 2.0 */ | |
36 | #define USB_PID_DATA2 0x87 /* USB 2.0 */ | |
37 | #define USB_PID_SPLIT 0x78 /* USB 2.0 */ | |
38 | #define USB_PID_IN 0x69 | |
39 | #define USB_PID_NAK 0x5a | |
40 | #define USB_PID_DATA1 0x4b | |
41 | #define USB_PID_PREAMBLE 0x3c /* Token mode */ | |
42 | #define USB_PID_ERR 0x3c /* USB 2.0: handshake mode */ | |
43 | #define USB_PID_SETUP 0x2d | |
44 | #define USB_PID_STALL 0x1e | |
45 | #define USB_PID_MDATA 0x0f /* USB 2.0 */ | |
46 | ||
47 | /*-------------------------------------------------------------------------*/ | |
48 | ||
49 | /* | |
50 | * USB Host Controller Driver (usb_hcd) framework | |
51 | * | |
52 | * Since "struct usb_bus" is so thin, you can't share much code in it. | |
53 | * This framework is a layer over that, and should be more sharable. | |
54 | */ | |
55 | ||
56 | /*-------------------------------------------------------------------------*/ | |
57 | ||
17200583 | 58 | struct usb_hcd { |
1da177e4 LT |
59 | |
60 | /* | |
61 | * housekeeping | |
62 | */ | |
63 | struct usb_bus self; /* hcd is-a bus */ | |
17200583 | 64 | struct kref kref; /* reference counter */ |
1da177e4 LT |
65 | |
66 | const char *product_desc; /* product/vendor string */ | |
67 | char irq_descr[24]; /* driver + bus # */ | |
68 | ||
d5926ae7 AS |
69 | struct timer_list rh_timer; /* drives root-hub polling */ |
70 | struct urb *status_urb; /* the current status urb */ | |
1da177e4 LT |
71 | |
72 | /* | |
73 | * hardware info/state | |
74 | */ | |
75 | const struct hc_driver *driver; /* hw-specific hooks */ | |
8de98402 BH |
76 | |
77 | /* Flags that need to be manipulated atomically */ | |
78 | unsigned long flags; | |
79 | #define HCD_FLAG_HW_ACCESSIBLE 0x00000001 | |
80 | #define HCD_FLAG_SAW_IRQ 0x00000002 | |
81 | ||
1da177e4 LT |
82 | unsigned rh_registered:1;/* is root hub registered? */ |
83 | ||
d5926ae7 AS |
84 | /* The next flag is a stopgap, to be removed when all the HCDs |
85 | * support the new root-hub polling mechanism. */ | |
86 | unsigned uses_new_polling:1; | |
87 | unsigned poll_rh:1; /* poll for rh status? */ | |
88 | unsigned poll_pending:1; /* status has changed? */ | |
0165de09 | 89 | unsigned wireless:1; /* Wireless USB HCD */ |
d5926ae7 | 90 | |
1da177e4 LT |
91 | int irq; /* irq allocated */ |
92 | void __iomem *regs; /* device memory/io */ | |
93 | u64 rsrc_start; /* memory/io resource start */ | |
94 | u64 rsrc_len; /* memory/io resource length */ | |
7d35b929 | 95 | unsigned power_budget; /* in mA, 0 = no limit */ |
1da177e4 LT |
96 | |
97 | #define HCD_BUFFER_POOLS 4 | |
98 | struct dma_pool *pool [HCD_BUFFER_POOLS]; | |
99 | ||
100 | int state; | |
101 | # define __ACTIVE 0x01 | |
102 | # define __SUSPEND 0x04 | |
103 | # define __TRANSIENT 0x80 | |
104 | ||
105 | # define HC_STATE_HALT 0 | |
106 | # define HC_STATE_RUNNING (__ACTIVE) | |
107 | # define HC_STATE_QUIESCING (__SUSPEND|__TRANSIENT|__ACTIVE) | |
108 | # define HC_STATE_RESUMING (__SUSPEND|__TRANSIENT) | |
109 | # define HC_STATE_SUSPENDED (__SUSPEND) | |
110 | ||
111 | #define HC_IS_RUNNING(state) ((state) & __ACTIVE) | |
112 | #define HC_IS_SUSPENDED(state) ((state) & __SUSPEND) | |
113 | ||
114 | /* more shared queuing code would be good; it should support | |
115 | * smarter scheduling, handle transaction translators, etc; | |
116 | * input size of periodic table to an interrupt scheduler. | |
117 | * (ohci 32, uhci 1024, ehci 256/512/1024). | |
118 | */ | |
119 | ||
120 | /* The HC driver's private data is stored at the end of | |
121 | * this structure. | |
122 | */ | |
123 | unsigned long hcd_priv[0] | |
124 | __attribute__ ((aligned (sizeof(unsigned long)))); | |
125 | }; | |
126 | ||
127 | /* 2.4 does this a bit differently ... */ | |
128 | static inline struct usb_bus *hcd_to_bus (struct usb_hcd *hcd) | |
129 | { | |
130 | return &hcd->self; | |
131 | } | |
132 | ||
17200583 AS |
133 | static inline struct usb_hcd *bus_to_hcd (struct usb_bus *bus) |
134 | { | |
135 | return container_of(bus, struct usb_hcd, self); | |
136 | } | |
1da177e4 LT |
137 | |
138 | struct hcd_timeout { /* timeouts we allocate */ | |
139 | struct list_head timeout_list; | |
140 | struct timer_list timer; | |
141 | }; | |
142 | ||
143 | /*-------------------------------------------------------------------------*/ | |
144 | ||
1da177e4 | 145 | |
1da177e4 LT |
146 | struct hc_driver { |
147 | const char *description; /* "ehci-hcd" etc */ | |
148 | const char *product_desc; /* product/vendor string */ | |
149 | size_t hcd_priv_size; /* size of private data */ | |
150 | ||
151 | /* irq handler */ | |
7d12e780 | 152 | irqreturn_t (*irq) (struct usb_hcd *hcd); |
1da177e4 LT |
153 | |
154 | int flags; | |
155 | #define HCD_MEMORY 0x0001 /* HC regs use memory (else I/O) */ | |
156 | #define HCD_USB11 0x0010 /* USB 1.1 */ | |
157 | #define HCD_USB2 0x0020 /* USB 2.0 */ | |
158 | ||
159 | /* called to init HCD and root hub */ | |
160 | int (*reset) (struct usb_hcd *hcd); | |
161 | int (*start) (struct usb_hcd *hcd); | |
162 | ||
163 | /* NOTE: these suspend/resume calls relate to the HC as | |
5f827ea3 | 164 | * a whole, not just the root hub; they're for PCI bus glue. |
1da177e4 | 165 | */ |
5f827ea3 | 166 | /* called after suspending the hub, before entering D3 etc */ |
9a5d3e98 | 167 | int (*suspend) (struct usb_hcd *hcd, pm_message_t message); |
1da177e4 | 168 | |
5f827ea3 | 169 | /* called after entering D0 (etc), before resuming the hub */ |
1da177e4 LT |
170 | int (*resume) (struct usb_hcd *hcd); |
171 | ||
172 | /* cleanly make HCD stop writing memory and doing I/O */ | |
173 | void (*stop) (struct usb_hcd *hcd); | |
174 | ||
64a21d02 AG |
175 | /* shutdown HCD */ |
176 | void (*shutdown) (struct usb_hcd *hcd); | |
177 | ||
1da177e4 LT |
178 | /* return current frame number */ |
179 | int (*get_frame_number) (struct usb_hcd *hcd); | |
180 | ||
181 | /* manage i/o requests, device state */ | |
182 | int (*urb_enqueue) (struct usb_hcd *hcd, | |
183 | struct usb_host_endpoint *ep, | |
184 | struct urb *urb, | |
55016f10 | 185 | gfp_t mem_flags); |
1da177e4 LT |
186 | int (*urb_dequeue) (struct usb_hcd *hcd, struct urb *urb); |
187 | ||
188 | /* hw synch, freeing endpoint resources that urb_dequeue can't */ | |
189 | void (*endpoint_disable)(struct usb_hcd *hcd, | |
190 | struct usb_host_endpoint *ep); | |
191 | ||
192 | /* root hub support */ | |
193 | int (*hub_status_data) (struct usb_hcd *hcd, char *buf); | |
194 | int (*hub_control) (struct usb_hcd *hcd, | |
195 | u16 typeReq, u16 wValue, u16 wIndex, | |
196 | char *buf, u16 wLength); | |
0c0382e3 AS |
197 | int (*bus_suspend)(struct usb_hcd *); |
198 | int (*bus_resume)(struct usb_hcd *); | |
1da177e4 | 199 | int (*start_port_reset)(struct usb_hcd *, unsigned port_num); |
d5926ae7 AS |
200 | void (*hub_irq_enable)(struct usb_hcd *); |
201 | /* Needed only if port-change IRQs are level-triggered */ | |
1da177e4 LT |
202 | }; |
203 | ||
a6d2bb9f AS |
204 | extern int usb_hcd_submit_urb (struct urb *urb, gfp_t mem_flags); |
205 | extern int usb_hcd_unlink_urb (struct urb *urb, int status); | |
7d12e780 | 206 | extern void usb_hcd_giveback_urb (struct usb_hcd *hcd, struct urb *urb); |
a6d2bb9f AS |
207 | extern void usb_hcd_endpoint_disable (struct usb_device *udev, |
208 | struct usb_host_endpoint *ep); | |
209 | extern int usb_hcd_get_frame_number (struct usb_device *udev); | |
1da177e4 LT |
210 | |
211 | extern struct usb_hcd *usb_create_hcd (const struct hc_driver *driver, | |
212 | struct device *dev, char *bus_name); | |
17200583 | 213 | extern struct usb_hcd *usb_get_hcd (struct usb_hcd *hcd); |
1da177e4 LT |
214 | extern void usb_put_hcd (struct usb_hcd *hcd); |
215 | extern int usb_add_hcd(struct usb_hcd *hcd, | |
216 | unsigned int irqnum, unsigned long irqflags); | |
217 | extern void usb_remove_hcd(struct usb_hcd *hcd); | |
218 | ||
64a21d02 AG |
219 | struct platform_device; |
220 | extern void usb_hcd_platform_shutdown(struct platform_device* dev); | |
221 | ||
1da177e4 LT |
222 | #ifdef CONFIG_PCI |
223 | struct pci_dev; | |
224 | struct pci_device_id; | |
225 | extern int usb_hcd_pci_probe (struct pci_dev *dev, | |
226 | const struct pci_device_id *id); | |
227 | extern void usb_hcd_pci_remove (struct pci_dev *dev); | |
228 | ||
229 | #ifdef CONFIG_PM | |
9a5d3e98 | 230 | extern int usb_hcd_pci_suspend (struct pci_dev *dev, pm_message_t state); |
1da177e4 LT |
231 | extern int usb_hcd_pci_resume (struct pci_dev *dev); |
232 | #endif /* CONFIG_PM */ | |
233 | ||
64a21d02 AG |
234 | extern void usb_hcd_pci_shutdown (struct pci_dev *dev); |
235 | ||
1da177e4 LT |
236 | #endif /* CONFIG_PCI */ |
237 | ||
238 | /* pci-ish (pdev null is ok) buffer alloc/mapping support */ | |
239 | int hcd_buffer_create (struct usb_hcd *hcd); | |
240 | void hcd_buffer_destroy (struct usb_hcd *hcd); | |
241 | ||
242 | void *hcd_buffer_alloc (struct usb_bus *bus, size_t size, | |
55016f10 | 243 | gfp_t mem_flags, dma_addr_t *dma); |
1da177e4 LT |
244 | void hcd_buffer_free (struct usb_bus *bus, size_t size, |
245 | void *addr, dma_addr_t dma); | |
246 | ||
247 | /* generic bus glue, needed for host controllers that don't use PCI */ | |
7d12e780 | 248 | extern irqreturn_t usb_hcd_irq (int irq, void *__hcd); |
d5926ae7 | 249 | |
1da177e4 | 250 | extern void usb_hc_died (struct usb_hcd *hcd); |
d5926ae7 | 251 | extern void usb_hcd_poll_rh_status(struct usb_hcd *hcd); |
1da177e4 LT |
252 | |
253 | /* -------------------------------------------------------------------------- */ | |
254 | ||
255 | /* Enumeration is only for the hub driver, or HCD virtual root hubs */ | |
256 | extern struct usb_device *usb_alloc_dev(struct usb_device *parent, | |
257 | struct usb_bus *, unsigned port); | |
258 | extern int usb_new_device(struct usb_device *dev); | |
259 | extern void usb_disconnect(struct usb_device **); | |
260 | ||
261 | extern int usb_get_configuration(struct usb_device *dev); | |
262 | extern void usb_destroy_configuration(struct usb_device *dev); | |
263 | ||
264 | /*-------------------------------------------------------------------------*/ | |
265 | ||
266 | /* | |
267 | * HCD Root Hub support | |
268 | */ | |
269 | ||
270 | #include "hub.h" | |
271 | ||
272 | /* (shifted) direction/type/recipient from the USB 2.0 spec, table 9.2 */ | |
273 | #define DeviceRequest \ | |
274 | ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8) | |
275 | #define DeviceOutRequest \ | |
276 | ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_DEVICE)<<8) | |
277 | ||
278 | #define InterfaceRequest \ | |
279 | ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8) | |
280 | ||
281 | #define EndpointRequest \ | |
282 | ((USB_DIR_IN|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8) | |
283 | #define EndpointOutRequest \ | |
284 | ((USB_DIR_OUT|USB_TYPE_STANDARD|USB_RECIP_INTERFACE)<<8) | |
285 | ||
286 | /* class requests from the USB 2.0 hub spec, table 11-15 */ | |
287 | /* GetBusState and SetHubDescriptor are optional, omitted */ | |
288 | #define ClearHubFeature (0x2000 | USB_REQ_CLEAR_FEATURE) | |
289 | #define ClearPortFeature (0x2300 | USB_REQ_CLEAR_FEATURE) | |
290 | #define GetHubDescriptor (0xa000 | USB_REQ_GET_DESCRIPTOR) | |
291 | #define GetHubStatus (0xa000 | USB_REQ_GET_STATUS) | |
292 | #define GetPortStatus (0xa300 | USB_REQ_GET_STATUS) | |
293 | #define SetHubFeature (0x2000 | USB_REQ_SET_FEATURE) | |
294 | #define SetPortFeature (0x2300 | USB_REQ_SET_FEATURE) | |
295 | ||
296 | ||
297 | /*-------------------------------------------------------------------------*/ | |
298 | ||
299 | /* | |
300 | * Generic bandwidth allocation constants/support | |
301 | */ | |
302 | #define FRAME_TIME_USECS 1000L | |
303 | #define BitTime(bytecount) (7 * 8 * bytecount / 6) /* with integer truncation */ | |
304 | /* Trying not to use worst-case bit-stuffing | |
305 | of (7/6 * 8 * bytecount) = 9.33 * bytecount */ | |
306 | /* bytecount = data payload byte count */ | |
307 | ||
308 | #define NS_TO_US(ns) ((ns + 500L) / 1000L) | |
309 | /* convert & round nanoseconds to microseconds */ | |
310 | ||
311 | extern void usb_claim_bandwidth (struct usb_device *dev, struct urb *urb, | |
312 | int bustime, int isoc); | |
313 | extern void usb_release_bandwidth (struct usb_device *dev, struct urb *urb, | |
314 | int isoc); | |
315 | ||
316 | /* | |
317 | * Full/low speed bandwidth allocation constants/support. | |
318 | */ | |
319 | #define BW_HOST_DELAY 1000L /* nanoseconds */ | |
320 | #define BW_HUB_LS_SETUP 333L /* nanoseconds */ | |
321 | /* 4 full-speed bit times (est.) */ | |
322 | ||
323 | #define FRAME_TIME_BITS 12000L /* frame = 1 millisecond */ | |
324 | #define FRAME_TIME_MAX_BITS_ALLOC (90L * FRAME_TIME_BITS / 100L) | |
325 | #define FRAME_TIME_MAX_USECS_ALLOC (90L * FRAME_TIME_USECS / 100L) | |
326 | ||
327 | extern int usb_check_bandwidth (struct usb_device *dev, struct urb *urb); | |
328 | ||
329 | /* | |
498f78e6 | 330 | * Ceiling [nano/micro]seconds (typical) for that many bytes at high speed |
1da177e4 LT |
331 | * ISO is a bit less, no ACK ... from USB 2.0 spec, 5.11.3 (and needed |
332 | * to preallocate bandwidth) | |
333 | */ | |
334 | #define USB2_HOST_DELAY 5 /* nsec, guess */ | |
f956e7cd | 335 | #define HS_NSECS(bytes) ( ((55 * 8 * 2083) \ |
336 | + (2083UL * (3 + BitTime(bytes))))/1000 \ | |
1da177e4 | 337 | + USB2_HOST_DELAY) |
f956e7cd | 338 | #define HS_NSECS_ISO(bytes) ( ((38 * 8 * 2083) \ |
339 | + (2083UL * (3 + BitTime(bytes))))/1000 \ | |
1da177e4 | 340 | + USB2_HOST_DELAY) |
498f78e6 DS |
341 | #define HS_USECS(bytes) NS_TO_US (HS_NSECS(bytes)) |
342 | #define HS_USECS_ISO(bytes) NS_TO_US (HS_NSECS_ISO(bytes)) | |
1da177e4 LT |
343 | |
344 | extern long usb_calc_bus_time (int speed, int is_input, | |
345 | int isoc, int bytecount); | |
346 | ||
347 | /*-------------------------------------------------------------------------*/ | |
348 | ||
1da177e4 LT |
349 | extern void usb_set_device_state(struct usb_device *udev, |
350 | enum usb_device_state new_state); | |
351 | ||
352 | /*-------------------------------------------------------------------------*/ | |
353 | ||
354 | /* exported only within usbcore */ | |
355 | ||
356 | extern struct list_head usb_bus_list; | |
4186ecf8 | 357 | extern struct mutex usb_bus_list_lock; |
1da177e4 LT |
358 | extern wait_queue_head_t usb_kill_urb_queue; |
359 | ||
d5926ae7 AS |
360 | extern void usb_enable_root_hub_irq (struct usb_bus *bus); |
361 | ||
1da177e4 LT |
362 | extern int usb_find_interface_driver (struct usb_device *dev, |
363 | struct usb_interface *interface); | |
364 | ||
365 | #define usb_endpoint_out(ep_dir) (!((ep_dir) & USB_DIR_IN)) | |
366 | ||
0c0382e3 | 367 | #ifdef CONFIG_PM |
db2d55b7 | 368 | extern void usb_hcd_resume_root_hub (struct usb_hcd *hcd); |
1c50c317 | 369 | extern void usb_root_hub_lost_power (struct usb_device *rhdev); |
0c0382e3 AS |
370 | extern int hcd_bus_suspend (struct usb_bus *bus); |
371 | extern int hcd_bus_resume (struct usb_bus *bus); | |
372 | #else | |
db2d55b7 AM |
373 | static inline void usb_hcd_resume_root_hub(struct usb_hcd *hcd) |
374 | { | |
375 | return; | |
376 | } | |
377 | ||
0c0382e3 AS |
378 | static inline int hcd_bus_suspend(struct usb_bus *bus) |
379 | { | |
380 | return 0; | |
381 | } | |
382 | ||
383 | static inline int hcd_bus_resume (struct usb_bus *bus) | |
384 | { | |
385 | return 0; | |
386 | } | |
387 | #endif /* CONFIG_PM */ | |
388 | ||
1da177e4 LT |
389 | /* |
390 | * USB device fs stuff | |
391 | */ | |
392 | ||
393 | #ifdef CONFIG_USB_DEVICEFS | |
394 | ||
395 | /* | |
396 | * these are expected to be called from the USB core/hub thread | |
397 | * with the kernel lock held | |
398 | */ | |
1da177e4 | 399 | extern void usbfs_update_special (void); |
1da177e4 LT |
400 | extern int usbfs_init(void); |
401 | extern void usbfs_cleanup(void); | |
402 | ||
403 | #else /* CONFIG_USB_DEVICEFS */ | |
404 | ||
1da177e4 | 405 | static inline void usbfs_update_special (void) {} |
1da177e4 LT |
406 | static inline int usbfs_init(void) { return 0; } |
407 | static inline void usbfs_cleanup(void) { } | |
408 | ||
409 | #endif /* CONFIG_USB_DEVICEFS */ | |
410 | ||
411 | /*-------------------------------------------------------------------------*/ | |
412 | ||
4749f32d | 413 | #if defined(CONFIG_USB_MON) |
1da177e4 LT |
414 | |
415 | struct usb_mon_operations { | |
416 | void (*urb_submit)(struct usb_bus *bus, struct urb *urb); | |
417 | void (*urb_submit_error)(struct usb_bus *bus, struct urb *urb, int err); | |
418 | void (*urb_complete)(struct usb_bus *bus, struct urb *urb); | |
419 | /* void (*urb_unlink)(struct usb_bus *bus, struct urb *urb); */ | |
1da177e4 LT |
420 | }; |
421 | ||
422 | extern struct usb_mon_operations *mon_ops; | |
423 | ||
424 | static inline void usbmon_urb_submit(struct usb_bus *bus, struct urb *urb) | |
425 | { | |
426 | if (bus->monitored) | |
427 | (*mon_ops->urb_submit)(bus, urb); | |
428 | } | |
429 | ||
430 | static inline void usbmon_urb_submit_error(struct usb_bus *bus, struct urb *urb, | |
431 | int error) | |
432 | { | |
433 | if (bus->monitored) | |
434 | (*mon_ops->urb_submit_error)(bus, urb, error); | |
435 | } | |
436 | ||
437 | static inline void usbmon_urb_complete(struct usb_bus *bus, struct urb *urb) | |
438 | { | |
439 | if (bus->monitored) | |
440 | (*mon_ops->urb_complete)(bus, urb); | |
441 | } | |
1da177e4 LT |
442 | |
443 | int usb_mon_register(struct usb_mon_operations *ops); | |
444 | void usb_mon_deregister(void); | |
445 | ||
446 | #else | |
447 | ||
448 | static inline void usbmon_urb_submit(struct usb_bus *bus, struct urb *urb) {} | |
449 | static inline void usbmon_urb_submit_error(struct usb_bus *bus, struct urb *urb, | |
450 | int error) {} | |
451 | static inline void usbmon_urb_complete(struct usb_bus *bus, struct urb *urb) {} | |
1da177e4 LT |
452 | |
453 | #endif /* CONFIG_USB_MON */ | |
454 | ||
455 | /*-------------------------------------------------------------------------*/ | |
456 | ||
457 | /* hub.h ... DeviceRemovable in 2.4.2-ac11, gone in 2.4.10 */ | |
458 | // bleech -- resurfaced in 2.4.11 or 2.4.12 | |
459 | #define bitmap DeviceRemovable | |
460 | ||
461 | ||
462 | /*-------------------------------------------------------------------------*/ | |
463 | ||
464 | /* random stuff */ | |
465 | ||
466 | #define RUN_CONTEXT (in_irq () ? "in_irq" \ | |
467 | : (in_interrupt () ? "in_interrupt" : "can sleep")) | |
468 | ||
469 | ||
470 | #endif /* __KERNEL__ */ | |
471 |