~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/sound/pci/asihpi/hpioctl.c

Version: ~ [ linux-6.2-rc3 ] ~ [ linux-6.1.5 ] ~ [ linux-6.0.19 ] ~ [ linux-5.19.17 ] ~ [ linux-5.18.19 ] ~ [ linux-5.17.15 ] ~ [ linux-5.16.20 ] ~ [ linux-5.15.87 ] ~ [ linux-5.14.21 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.162 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.228 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.269 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.302 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.337 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.302 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.9 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*******************************************************************************
  2     AudioScience HPI driver
  3     Common Linux HPI ioctl and module probe/remove functions
  4 
  5     Copyright (C) 1997-2014  AudioScience Inc. <support@audioscience.com>
  6 
  7     This program is free software; you can redistribute it and/or modify
  8     it under the terms of version 2 of the GNU General Public License as
  9     published by the Free Software Foundation;
 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 *******************************************************************************/
 17 #define SOURCEFILE_NAME "hpioctl.c"
 18 
 19 #include "hpi_internal.h"
 20 #include "hpi_version.h"
 21 #include "hpimsginit.h"
 22 #include "hpidebug.h"
 23 #include "hpimsgx.h"
 24 #include "hpioctl.h"
 25 #include "hpicmn.h"
 26 
 27 #include <linux/fs.h>
 28 #include <linux/interrupt.h>
 29 #include <linux/slab.h>
 30 #include <linux/moduleparam.h>
 31 #include <linux/uaccess.h>
 32 #include <linux/pci.h>
 33 #include <linux/stringify.h>
 34 #include <linux/module.h>
 35 #include <linux/vmalloc.h>
 36 
 37 #ifdef MODULE_FIRMWARE
 38 MODULE_FIRMWARE("asihpi/dsp5000.bin");
 39 MODULE_FIRMWARE("asihpi/dsp6200.bin");
 40 MODULE_FIRMWARE("asihpi/dsp6205.bin");
 41 MODULE_FIRMWARE("asihpi/dsp6400.bin");
 42 MODULE_FIRMWARE("asihpi/dsp6600.bin");
 43 MODULE_FIRMWARE("asihpi/dsp8700.bin");
 44 MODULE_FIRMWARE("asihpi/dsp8900.bin");
 45 #endif
 46 
 47 static int prealloc_stream_buf;
 48 module_param(prealloc_stream_buf, int, S_IRUGO);
 49 MODULE_PARM_DESC(prealloc_stream_buf,
 50         "Preallocate size for per-adapter stream buffer");
 51 
 52 /* Allow the debug level to be changed after module load.
 53  E.g.   echo 2 > /sys/module/asihpi/parameters/hpiDebugLevel
 54 */
 55 module_param(hpi_debug_level, int, S_IRUGO | S_IWUSR);
 56 MODULE_PARM_DESC(hpi_debug_level, "debug verbosity 0..5");
 57 
 58 /* List of adapters found */
 59 static struct hpi_adapter adapters[HPI_MAX_ADAPTERS];
 60 
 61 /* Wrapper function to HPI_Message to enable dumping of the
 62    message and response types.
 63 */
 64 static void hpi_send_recv_f(struct hpi_message *phm, struct hpi_response *phr,
 65         struct file *file)
 66 {
 67         if ((phm->adapter_index >= HPI_MAX_ADAPTERS)
 68                 && (phm->object != HPI_OBJ_SUBSYSTEM))
 69                 phr->error = HPI_ERROR_INVALID_OBJ_INDEX;
 70         else
 71                 hpi_send_recv_ex(phm, phr, file);
 72 }
 73 
 74 /* This is called from hpifunc.c functions, called by ALSA
 75  * (or other kernel process) In this case there is no file descriptor
 76  * available for the message cache code
 77  */
 78 void hpi_send_recv(struct hpi_message *phm, struct hpi_response *phr)
 79 {
 80         hpi_send_recv_f(phm, phr, HOWNER_KERNEL);
 81 }
 82 
 83 EXPORT_SYMBOL(hpi_send_recv);
 84 /* for radio-asihpi */
 85 
 86 int asihpi_hpi_release(struct file *file)
 87 {
 88         struct hpi_message hm;
 89         struct hpi_response hr;
 90 
 91 /* HPI_DEBUG_LOG(INFO,"hpi_release file %p, pid %d\n", file, current->pid); */
 92         /* close the subsystem just in case the application forgot to. */
 93         hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
 94                 HPI_SUBSYS_CLOSE);
 95         hpi_send_recv_ex(&hm, &hr, file);
 96         return 0;
 97 }
 98 
 99 long asihpi_hpi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
100 {
101         struct hpi_ioctl_linux __user *phpi_ioctl_data;
102         void __user *puhm;
103         void __user *puhr;
104         union hpi_message_buffer_v1 *hm;
105         union hpi_response_buffer_v1 *hr;
106         u16 res_max_size;
107         u32 uncopied_bytes;
108         int err = 0;
109 
110         if (cmd != HPI_IOCTL_LINUX)
111                 return -EINVAL;
112 
113         hm = kmalloc(sizeof(*hm), GFP_KERNEL);
114         hr = kzalloc(sizeof(*hr), GFP_KERNEL);
115         if (!hm || !hr) {
116                 err = -ENOMEM;
117                 goto out;
118         }
119 
120         phpi_ioctl_data = (struct hpi_ioctl_linux __user *)arg;
121 
122         /* Read the message and response pointers from user space.  */
123         if (get_user(puhm, &phpi_ioctl_data->phm)
124                 || get_user(puhr, &phpi_ioctl_data->phr)) {
125                 err = -EFAULT;
126                 goto out;
127         }
128 
129         /* Now read the message size and data from user space.  */
130         if (get_user(hm->h.size, (u16 __user *)puhm)) {
131                 err = -EFAULT;
132                 goto out;
133         }
134         if (hm->h.size > sizeof(*hm))
135                 hm->h.size = sizeof(*hm);
136 
137         /* printk(KERN_INFO "message size %d\n", hm->h.wSize); */
138 
139         uncopied_bytes = copy_from_user(hm, puhm, hm->h.size);
140         if (uncopied_bytes) {
141                 HPI_DEBUG_LOG(ERROR, "uncopied bytes %d\n", uncopied_bytes);
142                 err = -EFAULT;
143                 goto out;
144         }
145 
146         if (get_user(res_max_size, (u16 __user *)puhr)) {
147                 err = -EFAULT;
148                 goto out;
149         }
150         /* printk(KERN_INFO "user response size %d\n", res_max_size); */
151         if (res_max_size < sizeof(struct hpi_response_header)) {
152                 HPI_DEBUG_LOG(WARNING, "small res size %d\n", res_max_size);
153                 err = -EFAULT;
154                 goto out;
155         }
156 
157         res_max_size = min_t(size_t, res_max_size, sizeof(*hr));
158 
159         switch (hm->h.function) {
160         case HPI_SUBSYS_CREATE_ADAPTER:
161         case HPI_ADAPTER_DELETE:
162                 /* Application must not use these functions! */
163                 hr->h.size = sizeof(hr->h);
164                 hr->h.error = HPI_ERROR_INVALID_OPERATION;
165                 hr->h.function = hm->h.function;
166                 uncopied_bytes = copy_to_user(puhr, hr, hr->h.size);
167                 if (uncopied_bytes)
168                         err = -EFAULT;
169                 else
170                         err = 0;
171                 goto out;
172         }
173 
174         hr->h.size = res_max_size;
175         if (hm->h.object == HPI_OBJ_SUBSYSTEM) {
176                 hpi_send_recv_f(&hm->m0, &hr->r0, file);
177         } else {
178                 u16 __user *ptr = NULL;
179                 u32 size = 0;
180                 /* -1=no data 0=read from user mem, 1=write to user mem */
181                 int wrflag = -1;
182                 struct hpi_adapter *pa = NULL;
183 
184                 if (hm->h.adapter_index < ARRAY_SIZE(adapters))
185                         pa = &adapters[hm->h.adapter_index];
186 
187                 if (!pa || !pa->adapter || !pa->adapter->type) {
188                         hpi_init_response(&hr->r0, hm->h.object,
189                                 hm->h.function, HPI_ERROR_BAD_ADAPTER_NUMBER);
190 
191                         uncopied_bytes =
192                                 copy_to_user(puhr, hr, sizeof(hr->h));
193                         if (uncopied_bytes)
194                                 err = -EFAULT;
195                         else
196                                 err = 0;
197                         goto out;
198                 }
199 
200                 if (mutex_lock_interruptible(&pa->mutex)) {
201                         err = -EINTR;
202                         goto out;
203                 }
204 
205                 /* Dig out any pointers embedded in the message.  */
206                 switch (hm->h.function) {
207                 case HPI_OSTREAM_WRITE:
208                 case HPI_ISTREAM_READ:{
209                                 /* Yes, sparse, this is correct. */
210                                 ptr = (u16 __user *)hm->m0.u.d.u.data.pb_data;
211                                 size = hm->m0.u.d.u.data.data_size;
212 
213                                 /* Allocate buffer according to application request.
214                                    ?Is it better to alloc/free for the duration
215                                    of the transaction?
216                                  */
217                                 if (pa->buffer_size < size) {
218                                         HPI_DEBUG_LOG(DEBUG,
219                                                 "Realloc adapter %d stream "
220                                                 "buffer from %zd to %d\n",
221                                                 hm->h.adapter_index,
222                                                 pa->buffer_size, size);
223                                         if (pa->p_buffer) {
224                                                 pa->buffer_size = 0;
225                                                 vfree(pa->p_buffer);
226                                         }
227                                         pa->p_buffer = vmalloc(size);
228                                         if (pa->p_buffer)
229                                                 pa->buffer_size = size;
230                                         else {
231                                                 HPI_DEBUG_LOG(ERROR,
232                                                         "HPI could not allocate "
233                                                         "stream buffer size %d\n",
234                                                         size);
235 
236                                                 mutex_unlock(&pa->mutex);
237                                                 err = -EINVAL;
238                                                 goto out;
239                                         }
240                                 }
241 
242                                 hm->m0.u.d.u.data.pb_data = pa->p_buffer;
243                                 if (hm->h.function == HPI_ISTREAM_READ)
244                                         /* from card, WRITE to user mem */
245                                         wrflag = 1;
246                                 else
247                                         wrflag = 0;
248                                 break;
249                         }
250 
251                 default:
252                         size = 0;
253                         break;
254                 }
255 
256                 if (size && (wrflag == 0)) {
257                         uncopied_bytes =
258                                 copy_from_user(pa->p_buffer, ptr, size);
259                         if (uncopied_bytes)
260                                 HPI_DEBUG_LOG(WARNING,
261                                         "Missed %d of %d "
262                                         "bytes from user\n", uncopied_bytes,
263                                         size);
264                 }
265 
266                 hpi_send_recv_f(&hm->m0, &hr->r0, file);
267 
268                 if (size && (wrflag == 1)) {
269                         uncopied_bytes =
270                                 copy_to_user(ptr, pa->p_buffer, size);
271                         if (uncopied_bytes)
272                                 HPI_DEBUG_LOG(WARNING,
273                                         "Missed %d of %d " "bytes to user\n",
274                                         uncopied_bytes, size);
275                 }
276 
277                 mutex_unlock(&pa->mutex);
278         }
279 
280         /* on return response size must be set */
281         /*printk(KERN_INFO "response size %d\n", hr->h.wSize); */
282 
283         if (!hr->h.size) {
284                 HPI_DEBUG_LOG(ERROR, "response zero size\n");
285                 err = -EFAULT;
286                 goto out;
287         }
288 
289         if (hr->h.size > res_max_size) {
290                 HPI_DEBUG_LOG(ERROR, "response too big %d %d\n", hr->h.size,
291                         res_max_size);
292                 hr->h.error = HPI_ERROR_RESPONSE_BUFFER_TOO_SMALL;
293                 hr->h.specific_error = hr->h.size;
294                 hr->h.size = sizeof(hr->h);
295         }
296 
297         uncopied_bytes = copy_to_user(puhr, hr, hr->h.size);
298         if (uncopied_bytes) {
299                 HPI_DEBUG_LOG(ERROR, "uncopied bytes %d\n", uncopied_bytes);
300                 err = -EFAULT;
301                 goto out;
302         }
303 
304 out:
305         kfree(hm);
306         kfree(hr);
307         return err;
308 }
309 
310 static int asihpi_irq_count;
311 
312 static irqreturn_t asihpi_isr(int irq, void *dev_id)
313 {
314         struct hpi_adapter *a = dev_id;
315         int handled;
316 
317         if (!a->adapter->irq_query_and_clear) {
318                 pr_err("asihpi_isr ASI%04X:%d no handler\n", a->adapter->type,
319                         a->adapter->index);
320                 return IRQ_NONE;
321         }
322 
323         handled = a->adapter->irq_query_and_clear(a->adapter, 0);
324 
325         if (!handled)
326                 return IRQ_NONE;
327 
328         asihpi_irq_count++;
329         /* printk(KERN_INFO "asihpi_isr %d ASI%04X:%d irq handled\n",
330            asihpi_irq_count, a->adapter->type, a->adapter->index); */
331 
332         if (a->interrupt_callback)
333                 a->interrupt_callback(a);
334 
335         return IRQ_HANDLED;
336 }
337 
338 int asihpi_adapter_probe(struct pci_dev *pci_dev,
339                          const struct pci_device_id *pci_id)
340 {
341         int idx, nm, low_latency_mode = 0, irq_supported = 0;
342         int adapter_index;
343         unsigned int memlen;
344         struct hpi_message hm;
345         struct hpi_response hr;
346         struct hpi_adapter adapter;
347         struct hpi_pci pci;
348 
349         memset(&adapter, 0, sizeof(adapter));
350 
351         dev_printk(KERN_DEBUG, &pci_dev->dev,
352                 "probe %04x:%04x,%04x:%04x,%04x\n", pci_dev->vendor,
353                 pci_dev->device, pci_dev->subsystem_vendor,
354                 pci_dev->subsystem_device, pci_dev->devfn);
355 
356         if (pci_enable_device(pci_dev) < 0) {
357                 dev_err(&pci_dev->dev,
358                         "pci_enable_device failed, disabling device\n");
359                 return -EIO;
360         }
361 
362         pci_set_master(pci_dev);        /* also sets latency timer if < 16 */
363 
364         hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
365                 HPI_SUBSYS_CREATE_ADAPTER);
366         hpi_init_response(&hr, HPI_OBJ_SUBSYSTEM, HPI_SUBSYS_CREATE_ADAPTER,
367                 HPI_ERROR_PROCESSING_MESSAGE);
368 
369         hm.adapter_index = HPI_ADAPTER_INDEX_INVALID;
370 
371         nm = HPI_MAX_ADAPTER_MEM_SPACES;
372 
373         for (idx = 0; idx < nm; idx++) {
374                 HPI_DEBUG_LOG(INFO, "resource %d %pR\n", idx,
375                         &pci_dev->resource[idx]);
376 
377                 if (pci_resource_flags(pci_dev, idx) & IORESOURCE_MEM) {
378                         memlen = pci_resource_len(pci_dev, idx);
379                         pci.ap_mem_base[idx] =
380                                 ioremap(pci_resource_start(pci_dev, idx),
381                                 memlen);
382                         if (!pci.ap_mem_base[idx]) {
383                                 HPI_DEBUG_LOG(ERROR,
384                                         "ioremap failed, aborting\n");
385                                 /* unmap previously mapped pci mem space */
386                                 goto err;
387                         }
388                 }
389         }
390 
391         pci.pci_dev = pci_dev;
392         hm.u.s.resource.bus_type = HPI_BUS_PCI;
393         hm.u.s.resource.r.pci = &pci;
394 
395         /* call CreateAdapterObject on the relevant hpi module */
396         hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
397         if (hr.error)
398                 goto err;
399 
400         adapter_index = hr.u.s.adapter_index;
401         adapter.adapter = hpi_find_adapter(adapter_index);
402 
403         if (prealloc_stream_buf) {
404                 adapter.p_buffer = vmalloc(prealloc_stream_buf);
405                 if (!adapter.p_buffer) {
406                         HPI_DEBUG_LOG(ERROR,
407                                 "HPI could not allocate "
408                                 "kernel buffer size %d\n",
409                                 prealloc_stream_buf);
410                         goto err;
411                 }
412         }
413 
414         hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
415                 HPI_ADAPTER_OPEN);
416         hm.adapter_index = adapter.adapter->index;
417         hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
418 
419         if (hr.error) {
420                 HPI_DEBUG_LOG(ERROR, "HPI_ADAPTER_OPEN failed, aborting\n");
421                 goto err;
422         }
423 
424         /* Check if current mode == Low Latency mode */
425         hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
426                 HPI_ADAPTER_GET_MODE);
427         hm.adapter_index = adapter.adapter->index;
428         hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
429 
430         if (!hr.error
431                 && hr.u.ax.mode.adapter_mode == HPI_ADAPTER_MODE_LOW_LATENCY)
432                 low_latency_mode = 1;
433         else
434                 dev_info(&pci_dev->dev,
435                         "Adapter at index %d is not in low latency mode\n",
436                         adapter.adapter->index);
437 
438         /* Check if IRQs are supported */
439         hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
440                 HPI_ADAPTER_GET_PROPERTY);
441         hm.adapter_index = adapter.adapter->index;
442         hm.u.ax.property_set.property = HPI_ADAPTER_PROPERTY_SUPPORTS_IRQ;
443         hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
444         if (hr.error || !hr.u.ax.property_get.parameter1) {
445                 dev_info(&pci_dev->dev,
446                         "IRQs not supported by adapter at index %d\n",
447                         adapter.adapter->index);
448         } else {
449                 irq_supported = 1;
450         }
451 
452         /* WARNING can't init mutex in 'adapter'
453          * and then copy it to adapters[] ?!?!
454          */
455         adapters[adapter_index] = adapter;
456         mutex_init(&adapters[adapter_index].mutex);
457         pci_set_drvdata(pci_dev, &adapters[adapter_index]);
458 
459         if (low_latency_mode && irq_supported) {
460                 if (!adapter.adapter->irq_query_and_clear) {
461                         dev_err(&pci_dev->dev,
462                                 "no IRQ handler for adapter %d, aborting\n",
463                                 adapter.adapter->index);
464                         goto err;
465                 }
466 
467                 /* Disable IRQ generation on DSP side by setting the rate to 0 */
468                 hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
469                         HPI_ADAPTER_SET_PROPERTY);
470                 hm.adapter_index = adapter.adapter->index;
471                 hm.u.ax.property_set.property = HPI_ADAPTER_PROPERTY_IRQ_RATE;
472                 hm.u.ax.property_set.parameter1 = 0;
473                 hm.u.ax.property_set.parameter2 = 0;
474                 hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
475                 if (hr.error) {
476                         HPI_DEBUG_LOG(ERROR,
477                                 "HPI_ADAPTER_GET_MODE failed, aborting\n");
478                         goto err;
479                 }
480 
481                 /* Note: request_irq calls asihpi_isr here */
482                 if (request_irq(pci_dev->irq, asihpi_isr, IRQF_SHARED,
483                                 "asihpi", &adapters[adapter_index])) {
484                         dev_err(&pci_dev->dev, "request_irq(%d) failed\n",
485                                 pci_dev->irq);
486                         goto err;
487                 }
488 
489                 adapters[adapter_index].interrupt_mode = 1;
490 
491                 dev_info(&pci_dev->dev, "using irq %d\n", pci_dev->irq);
492                 adapters[adapter_index].irq = pci_dev->irq;
493         } else {
494                 dev_info(&pci_dev->dev, "using polled mode\n");
495         }
496 
497         dev_info(&pci_dev->dev, "probe succeeded for ASI%04X HPI index %d\n",
498                  adapter.adapter->type, adapter_index);
499 
500         return 0;
501 
502 err:
503         for (idx = 0; idx < HPI_MAX_ADAPTER_MEM_SPACES; idx++) {
504                 if (pci.ap_mem_base[idx]) {
505                         iounmap(pci.ap_mem_base[idx]);
506                         pci.ap_mem_base[idx] = NULL;
507                 }
508         }
509 
510         if (adapter.p_buffer) {
511                 adapter.buffer_size = 0;
512                 vfree(adapter.p_buffer);
513         }
514 
515         HPI_DEBUG_LOG(ERROR, "adapter_probe failed\n");
516         return -ENODEV;
517 }
518 
519 void asihpi_adapter_remove(struct pci_dev *pci_dev)
520 {
521         int idx;
522         struct hpi_message hm;
523         struct hpi_response hr;
524         struct hpi_adapter *pa;
525         struct hpi_pci pci;
526 
527         pa = pci_get_drvdata(pci_dev);
528         pci = pa->adapter->pci;
529 
530         /* Disable IRQ generation on DSP side */
531         hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
532                 HPI_ADAPTER_SET_PROPERTY);
533         hm.adapter_index = pa->adapter->index;
534         hm.u.ax.property_set.property = HPI_ADAPTER_PROPERTY_IRQ_RATE;
535         hm.u.ax.property_set.parameter1 = 0;
536         hm.u.ax.property_set.parameter2 = 0;
537         hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
538 
539         hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
540                 HPI_ADAPTER_DELETE);
541         hm.adapter_index = pa->adapter->index;
542         hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
543 
544         /* unmap PCI memory space, mapped during device init. */
545         for (idx = 0; idx < HPI_MAX_ADAPTER_MEM_SPACES; ++idx)
546                 iounmap(pci.ap_mem_base[idx]);
547 
548         if (pa->irq)
549                 free_irq(pa->irq, pa);
550 
551         vfree(pa->p_buffer);
552 
553         if (1)
554                 dev_info(&pci_dev->dev,
555                          "remove %04x:%04x,%04x:%04x,%04x, HPI index %d\n",
556                          pci_dev->vendor, pci_dev->device,
557                          pci_dev->subsystem_vendor, pci_dev->subsystem_device,
558                          pci_dev->devfn, pa->adapter->index);
559 
560         memset(pa, 0, sizeof(*pa));
561 }
562 
563 void __init asihpi_init(void)
564 {
565         struct hpi_message hm;
566         struct hpi_response hr;
567 
568         memset(adapters, 0, sizeof(adapters));
569 
570         printk(KERN_INFO "ASIHPI driver " HPI_VER_STRING "\n");
571 
572         hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
573                 HPI_SUBSYS_DRIVER_LOAD);
574         hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
575 }
576 
577 void asihpi_exit(void)
578 {
579         struct hpi_message hm;
580         struct hpi_response hr;
581 
582         hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
583                 HPI_SUBSYS_DRIVER_UNLOAD);
584         hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
585 }
586 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp