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Viewing changes to pci/asihpi/hpioctl.c

  • Committer: Hui Wang
  • Date: 2018-06-07 01:04:04 UTC
  • Revision ID: git-v1:baf13208df10376d9e4588ad3524aeb3c9973bdf
sync the alsa hda driver from Takashi's tree

Signed-off-by: Hui Wang <hui.wang@canonical.com>

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pci/asihpi/hpioctl.c
 
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
#include <linux/nospec.h>
 
37
 
 
38
#ifdef MODULE_FIRMWARE
 
39
MODULE_FIRMWARE("asihpi/dsp5000.bin");
 
40
MODULE_FIRMWARE("asihpi/dsp6200.bin");
 
41
MODULE_FIRMWARE("asihpi/dsp6205.bin");
 
42
MODULE_FIRMWARE("asihpi/dsp6400.bin");
 
43
MODULE_FIRMWARE("asihpi/dsp6600.bin");
 
44
MODULE_FIRMWARE("asihpi/dsp8700.bin");
 
45
MODULE_FIRMWARE("asihpi/dsp8900.bin");
 
46
#endif
 
47
 
 
48
static int prealloc_stream_buf;
 
49
module_param(prealloc_stream_buf, int, 0444);
 
50
MODULE_PARM_DESC(prealloc_stream_buf,
 
51
        "Preallocate size for per-adapter stream buffer");
 
52
 
 
53
/* Allow the debug level to be changed after module load.
 
54
 E.g.   echo 2 > /sys/module/asihpi/parameters/hpiDebugLevel
 
55
*/
 
56
module_param(hpi_debug_level, int, 0644);
 
57
MODULE_PARM_DESC(hpi_debug_level, "debug verbosity 0..5");
 
58
 
 
59
/* List of adapters found */
 
60
static struct hpi_adapter adapters[HPI_MAX_ADAPTERS];
 
61
 
 
62
/* Wrapper function to HPI_Message to enable dumping of the
 
63
   message and response types.
 
64
*/
 
65
static void hpi_send_recv_f(struct hpi_message *phm, struct hpi_response *phr,
 
66
        struct file *file)
 
67
{
 
68
        if ((phm->adapter_index >= HPI_MAX_ADAPTERS)
 
69
                && (phm->object != HPI_OBJ_SUBSYSTEM))
 
70
                phr->error = HPI_ERROR_INVALID_OBJ_INDEX;
 
71
        else
 
72
                hpi_send_recv_ex(phm, phr, file);
 
73
}
 
74
 
 
75
/* This is called from hpifunc.c functions, called by ALSA
 
76
 * (or other kernel process) In this case there is no file descriptor
 
77
 * available for the message cache code
 
78
 */
 
79
void hpi_send_recv(struct hpi_message *phm, struct hpi_response *phr)
 
80
{
 
81
        hpi_send_recv_f(phm, phr, HOWNER_KERNEL);
 
82
}
 
83
 
 
84
EXPORT_SYMBOL(hpi_send_recv);
 
85
/* for radio-asihpi */
 
86
 
 
87
int asihpi_hpi_release(struct file *file)
 
88
{
 
89
        struct hpi_message hm;
 
90
        struct hpi_response hr;
 
91
 
 
92
/* HPI_DEBUG_LOG(INFO,"hpi_release file %p, pid %d\n", file, current->pid); */
 
93
        /* close the subsystem just in case the application forgot to. */
 
94
        hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
 
95
                HPI_SUBSYS_CLOSE);
 
96
        hpi_send_recv_ex(&hm, &hr, file);
 
97
        return 0;
 
98
}
 
99
 
 
100
long asihpi_hpi_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 
101
{
 
102
        struct hpi_ioctl_linux __user *phpi_ioctl_data;
 
103
        void __user *puhm;
 
104
        void __user *puhr;
 
105
        union hpi_message_buffer_v1 *hm;
 
106
        union hpi_response_buffer_v1 *hr;
 
107
        u16 msg_size;
 
108
        u16 res_max_size;
 
109
        u32 uncopied_bytes;
 
110
        int err = 0;
 
111
 
 
112
        if (cmd != HPI_IOCTL_LINUX)
 
113
                return -EINVAL;
 
114
 
 
115
        hm = kmalloc(sizeof(*hm), GFP_KERNEL);
 
116
        hr = kzalloc(sizeof(*hr), GFP_KERNEL);
 
117
        if (!hm || !hr) {
 
118
                err = -ENOMEM;
 
119
                goto out;
 
120
        }
 
121
 
 
122
        phpi_ioctl_data = (struct hpi_ioctl_linux __user *)arg;
 
123
 
 
124
        /* Read the message and response pointers from user space.  */
 
125
        if (get_user(puhm, &phpi_ioctl_data->phm)
 
126
                || get_user(puhr, &phpi_ioctl_data->phr)) {
 
127
                err = -EFAULT;
 
128
                goto out;
 
129
        }
 
130
 
 
131
        /* Now read the message size and data from user space.  */
 
132
        if (get_user(msg_size, (u16 __user *)puhm)) {
 
133
                err = -EFAULT;
 
134
                goto out;
 
135
        }
 
136
        if (msg_size > sizeof(*hm))
 
137
                msg_size = sizeof(*hm);
 
138
 
 
139
        /* printk(KERN_INFO "message size %d\n", hm->h.wSize); */
 
140
 
 
141
        uncopied_bytes = copy_from_user(hm, puhm, msg_size);
 
142
        if (uncopied_bytes) {
 
143
                HPI_DEBUG_LOG(ERROR, "uncopied bytes %d\n", uncopied_bytes);
 
144
                err = -EFAULT;
 
145
                goto out;
 
146
        }
 
147
 
 
148
        /* Override h.size in case it is changed between two userspace fetches */
 
149
        hm->h.size = msg_size;
 
150
 
 
151
        if (get_user(res_max_size, (u16 __user *)puhr)) {
 
152
                err = -EFAULT;
 
153
                goto out;
 
154
        }
 
155
        /* printk(KERN_INFO "user response size %d\n", res_max_size); */
 
156
        if (res_max_size < sizeof(struct hpi_response_header)) {
 
157
                HPI_DEBUG_LOG(WARNING, "small res size %d\n", res_max_size);
 
158
                err = -EFAULT;
 
159
                goto out;
 
160
        }
 
161
 
 
162
        res_max_size = min_t(size_t, res_max_size, sizeof(*hr));
 
163
 
 
164
        switch (hm->h.function) {
 
165
        case HPI_SUBSYS_CREATE_ADAPTER:
 
166
        case HPI_ADAPTER_DELETE:
 
167
                /* Application must not use these functions! */
 
168
                hr->h.size = sizeof(hr->h);
 
169
                hr->h.error = HPI_ERROR_INVALID_OPERATION;
 
170
                hr->h.function = hm->h.function;
 
171
                uncopied_bytes = copy_to_user(puhr, hr, hr->h.size);
 
172
                if (uncopied_bytes)
 
173
                        err = -EFAULT;
 
174
                else
 
175
                        err = 0;
 
176
                goto out;
 
177
        }
 
178
 
 
179
        hr->h.size = res_max_size;
 
180
        if (hm->h.object == HPI_OBJ_SUBSYSTEM) {
 
181
                hpi_send_recv_f(&hm->m0, &hr->r0, file);
 
182
        } else {
 
183
                u16 __user *ptr = NULL;
 
184
                u32 size = 0;
 
185
                /* -1=no data 0=read from user mem, 1=write to user mem */
 
186
                int wrflag = -1;
 
187
                struct hpi_adapter *pa = NULL;
 
188
 
 
189
                if (hm->h.adapter_index < ARRAY_SIZE(adapters))
 
190
                        pa = &adapters[array_index_nospec(hm->h.adapter_index,
 
191
                                                          ARRAY_SIZE(adapters))];
 
192
 
 
193
                if (!pa || !pa->adapter || !pa->adapter->type) {
 
194
                        hpi_init_response(&hr->r0, hm->h.object,
 
195
                                hm->h.function, HPI_ERROR_BAD_ADAPTER_NUMBER);
 
196
 
 
197
                        uncopied_bytes =
 
198
                                copy_to_user(puhr, hr, sizeof(hr->h));
 
199
                        if (uncopied_bytes)
 
200
                                err = -EFAULT;
 
201
                        else
 
202
                                err = 0;
 
203
                        goto out;
 
204
                }
 
205
 
 
206
                if (mutex_lock_interruptible(&pa->mutex)) {
 
207
                        err = -EINTR;
 
208
                        goto out;
 
209
                }
 
210
 
 
211
                /* Dig out any pointers embedded in the message.  */
 
212
                switch (hm->h.function) {
 
213
                case HPI_OSTREAM_WRITE:
 
214
                case HPI_ISTREAM_READ:{
 
215
                                /* Yes, sparse, this is correct. */
 
216
                                ptr = (u16 __user *)hm->m0.u.d.u.data.pb_data;
 
217
                                size = hm->m0.u.d.u.data.data_size;
 
218
 
 
219
                                /* Allocate buffer according to application request.
 
220
                                   ?Is it better to alloc/free for the duration
 
221
                                   of the transaction?
 
222
                                 */
 
223
                                if (pa->buffer_size < size) {
 
224
                                        HPI_DEBUG_LOG(DEBUG,
 
225
                                                "Realloc adapter %d stream "
 
226
                                                "buffer from %zd to %d\n",
 
227
                                                hm->h.adapter_index,
 
228
                                                pa->buffer_size, size);
 
229
                                        if (pa->p_buffer) {
 
230
                                                pa->buffer_size = 0;
 
231
                                                vfree(pa->p_buffer);
 
232
                                        }
 
233
                                        pa->p_buffer = vmalloc(size);
 
234
                                        if (pa->p_buffer)
 
235
                                                pa->buffer_size = size;
 
236
                                        else {
 
237
                                                HPI_DEBUG_LOG(ERROR,
 
238
                                                        "HPI could not allocate "
 
239
                                                        "stream buffer size %d\n",
 
240
                                                        size);
 
241
 
 
242
                                                mutex_unlock(&pa->mutex);
 
243
                                                err = -EINVAL;
 
244
                                                goto out;
 
245
                                        }
 
246
                                }
 
247
 
 
248
                                hm->m0.u.d.u.data.pb_data = pa->p_buffer;
 
249
                                if (hm->h.function == HPI_ISTREAM_READ)
 
250
                                        /* from card, WRITE to user mem */
 
251
                                        wrflag = 1;
 
252
                                else
 
253
                                        wrflag = 0;
 
254
                                break;
 
255
                        }
 
256
 
 
257
                default:
 
258
                        size = 0;
 
259
                        break;
 
260
                }
 
261
 
 
262
                if (size && (wrflag == 0)) {
 
263
                        uncopied_bytes =
 
264
                                copy_from_user(pa->p_buffer, ptr, size);
 
265
                        if (uncopied_bytes)
 
266
                                HPI_DEBUG_LOG(WARNING,
 
267
                                        "Missed %d of %d "
 
268
                                        "bytes from user\n", uncopied_bytes,
 
269
                                        size);
 
270
                }
 
271
 
 
272
                hpi_send_recv_f(&hm->m0, &hr->r0, file);
 
273
 
 
274
                if (size && (wrflag == 1)) {
 
275
                        uncopied_bytes =
 
276
                                copy_to_user(ptr, pa->p_buffer, size);
 
277
                        if (uncopied_bytes)
 
278
                                HPI_DEBUG_LOG(WARNING,
 
279
                                        "Missed %d of %d " "bytes to user\n",
 
280
                                        uncopied_bytes, size);
 
281
                }
 
282
 
 
283
                mutex_unlock(&pa->mutex);
 
284
        }
 
285
 
 
286
        /* on return response size must be set */
 
287
        /*printk(KERN_INFO "response size %d\n", hr->h.wSize); */
 
288
 
 
289
        if (!hr->h.size) {
 
290
                HPI_DEBUG_LOG(ERROR, "response zero size\n");
 
291
                err = -EFAULT;
 
292
                goto out;
 
293
        }
 
294
 
 
295
        if (hr->h.size > res_max_size) {
 
296
                HPI_DEBUG_LOG(ERROR, "response too big %d %d\n", hr->h.size,
 
297
                        res_max_size);
 
298
                hr->h.error = HPI_ERROR_RESPONSE_BUFFER_TOO_SMALL;
 
299
                hr->h.specific_error = hr->h.size;
 
300
                hr->h.size = sizeof(hr->h);
 
301
        }
 
302
 
 
303
        uncopied_bytes = copy_to_user(puhr, hr, hr->h.size);
 
304
        if (uncopied_bytes) {
 
305
                HPI_DEBUG_LOG(ERROR, "uncopied bytes %d\n", uncopied_bytes);
 
306
                err = -EFAULT;
 
307
                goto out;
 
308
        }
 
309
 
 
310
out:
 
311
        kfree(hm);
 
312
        kfree(hr);
 
313
        return err;
 
314
}
 
315
 
 
316
static int asihpi_irq_count;
 
317
 
 
318
static irqreturn_t asihpi_isr(int irq, void *dev_id)
 
319
{
 
320
        struct hpi_adapter *a = dev_id;
 
321
        int handled;
 
322
 
 
323
        if (!a->adapter->irq_query_and_clear) {
 
324
                pr_err("asihpi_isr ASI%04X:%d no handler\n", a->adapter->type,
 
325
                        a->adapter->index);
 
326
                return IRQ_NONE;
 
327
        }
 
328
 
 
329
        handled = a->adapter->irq_query_and_clear(a->adapter, 0);
 
330
 
 
331
        if (!handled)
 
332
                return IRQ_NONE;
 
333
 
 
334
        asihpi_irq_count++;
 
335
        /* printk(KERN_INFO "asihpi_isr %d ASI%04X:%d irq handled\n",
 
336
           asihpi_irq_count, a->adapter->type, a->adapter->index); */
 
337
 
 
338
        if (a->interrupt_callback)
 
339
                a->interrupt_callback(a);
 
340
 
 
341
        return IRQ_HANDLED;
 
342
}
 
343
 
 
344
int asihpi_adapter_probe(struct pci_dev *pci_dev,
 
345
                         const struct pci_device_id *pci_id)
 
346
{
 
347
        int idx, nm, low_latency_mode = 0, irq_supported = 0;
 
348
        int adapter_index;
 
349
        unsigned int memlen;
 
350
        struct hpi_message hm;
 
351
        struct hpi_response hr;
 
352
        struct hpi_adapter adapter;
 
353
        struct hpi_pci pci;
 
354
 
 
355
        memset(&adapter, 0, sizeof(adapter));
 
356
 
 
357
        dev_printk(KERN_DEBUG, &pci_dev->dev,
 
358
                "probe %04x:%04x,%04x:%04x,%04x\n", pci_dev->vendor,
 
359
                pci_dev->device, pci_dev->subsystem_vendor,
 
360
                pci_dev->subsystem_device, pci_dev->devfn);
 
361
 
 
362
        if (pci_enable_device(pci_dev) < 0) {
 
363
                dev_err(&pci_dev->dev,
 
364
                        "pci_enable_device failed, disabling device\n");
 
365
                return -EIO;
 
366
        }
 
367
 
 
368
        pci_set_master(pci_dev);        /* also sets latency timer if < 16 */
 
369
 
 
370
        hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
 
371
                HPI_SUBSYS_CREATE_ADAPTER);
 
372
        hpi_init_response(&hr, HPI_OBJ_SUBSYSTEM, HPI_SUBSYS_CREATE_ADAPTER,
 
373
                HPI_ERROR_PROCESSING_MESSAGE);
 
374
 
 
375
        hm.adapter_index = HPI_ADAPTER_INDEX_INVALID;
 
376
 
 
377
        nm = HPI_MAX_ADAPTER_MEM_SPACES;
 
378
 
 
379
        for (idx = 0; idx < nm; idx++) {
 
380
                HPI_DEBUG_LOG(INFO, "resource %d %pR\n", idx,
 
381
                        &pci_dev->resource[idx]);
 
382
 
 
383
                if (pci_resource_flags(pci_dev, idx) & IORESOURCE_MEM) {
 
384
                        memlen = pci_resource_len(pci_dev, idx);
 
385
                        pci.ap_mem_base[idx] =
 
386
                                ioremap(pci_resource_start(pci_dev, idx),
 
387
                                memlen);
 
388
                        if (!pci.ap_mem_base[idx]) {
 
389
                                HPI_DEBUG_LOG(ERROR,
 
390
                                        "ioremap failed, aborting\n");
 
391
                                /* unmap previously mapped pci mem space */
 
392
                                goto err;
 
393
                        }
 
394
                }
 
395
        }
 
396
 
 
397
        pci.pci_dev = pci_dev;
 
398
        hm.u.s.resource.bus_type = HPI_BUS_PCI;
 
399
        hm.u.s.resource.r.pci = &pci;
 
400
 
 
401
        /* call CreateAdapterObject on the relevant hpi module */
 
402
        hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
 
403
        if (hr.error)
 
404
                goto err;
 
405
 
 
406
        adapter_index = hr.u.s.adapter_index;
 
407
        adapter.adapter = hpi_find_adapter(adapter_index);
 
408
 
 
409
        if (prealloc_stream_buf) {
 
410
                adapter.p_buffer = vmalloc(prealloc_stream_buf);
 
411
                if (!adapter.p_buffer) {
 
412
                        HPI_DEBUG_LOG(ERROR,
 
413
                                "HPI could not allocate "
 
414
                                "kernel buffer size %d\n",
 
415
                                prealloc_stream_buf);
 
416
                        goto err;
 
417
                }
 
418
        }
 
419
 
 
420
        hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
 
421
                HPI_ADAPTER_OPEN);
 
422
        hm.adapter_index = adapter.adapter->index;
 
423
        hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
 
424
 
 
425
        if (hr.error) {
 
426
                HPI_DEBUG_LOG(ERROR, "HPI_ADAPTER_OPEN failed, aborting\n");
 
427
                goto err;
 
428
        }
 
429
 
 
430
        /* Check if current mode == Low Latency mode */
 
431
        hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
 
432
                HPI_ADAPTER_GET_MODE);
 
433
        hm.adapter_index = adapter.adapter->index;
 
434
        hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
 
435
 
 
436
        if (!hr.error
 
437
                && hr.u.ax.mode.adapter_mode == HPI_ADAPTER_MODE_LOW_LATENCY)
 
438
                low_latency_mode = 1;
 
439
        else
 
440
                dev_info(&pci_dev->dev,
 
441
                        "Adapter at index %d is not in low latency mode\n",
 
442
                        adapter.adapter->index);
 
443
 
 
444
        /* Check if IRQs are supported */
 
445
        hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
 
446
                HPI_ADAPTER_GET_PROPERTY);
 
447
        hm.adapter_index = adapter.adapter->index;
 
448
        hm.u.ax.property_set.property = HPI_ADAPTER_PROPERTY_SUPPORTS_IRQ;
 
449
        hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
 
450
        if (hr.error || !hr.u.ax.property_get.parameter1) {
 
451
                dev_info(&pci_dev->dev,
 
452
                        "IRQs not supported by adapter at index %d\n",
 
453
                        adapter.adapter->index);
 
454
        } else {
 
455
                irq_supported = 1;
 
456
        }
 
457
 
 
458
        /* WARNING can't init mutex in 'adapter'
 
459
         * and then copy it to adapters[] ?!?!
 
460
         */
 
461
        adapters[adapter_index] = adapter;
 
462
        mutex_init(&adapters[adapter_index].mutex);
 
463
        pci_set_drvdata(pci_dev, &adapters[adapter_index]);
 
464
 
 
465
        if (low_latency_mode && irq_supported) {
 
466
                if (!adapter.adapter->irq_query_and_clear) {
 
467
                        dev_err(&pci_dev->dev,
 
468
                                "no IRQ handler for adapter %d, aborting\n",
 
469
                                adapter.adapter->index);
 
470
                        goto err;
 
471
                }
 
472
 
 
473
                /* Disable IRQ generation on DSP side by setting the rate to 0 */
 
474
                hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
 
475
                        HPI_ADAPTER_SET_PROPERTY);
 
476
                hm.adapter_index = adapter.adapter->index;
 
477
                hm.u.ax.property_set.property = HPI_ADAPTER_PROPERTY_IRQ_RATE;
 
478
                hm.u.ax.property_set.parameter1 = 0;
 
479
                hm.u.ax.property_set.parameter2 = 0;
 
480
                hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
 
481
                if (hr.error) {
 
482
                        HPI_DEBUG_LOG(ERROR,
 
483
                                "HPI_ADAPTER_GET_MODE failed, aborting\n");
 
484
                        goto err;
 
485
                }
 
486
 
 
487
                /* Note: request_irq calls asihpi_isr here */
 
488
                if (request_irq(pci_dev->irq, asihpi_isr, IRQF_SHARED,
 
489
                                "asihpi", &adapters[adapter_index])) {
 
490
                        dev_err(&pci_dev->dev, "request_irq(%d) failed\n",
 
491
                                pci_dev->irq);
 
492
                        goto err;
 
493
                }
 
494
 
 
495
                adapters[adapter_index].interrupt_mode = 1;
 
496
 
 
497
                dev_info(&pci_dev->dev, "using irq %d\n", pci_dev->irq);
 
498
                adapters[adapter_index].irq = pci_dev->irq;
 
499
        } else {
 
500
                dev_info(&pci_dev->dev, "using polled mode\n");
 
501
        }
 
502
 
 
503
        dev_info(&pci_dev->dev, "probe succeeded for ASI%04X HPI index %d\n",
 
504
                 adapter.adapter->type, adapter_index);
 
505
 
 
506
        return 0;
 
507
 
 
508
err:
 
509
        for (idx = 0; idx < HPI_MAX_ADAPTER_MEM_SPACES; idx++) {
 
510
                if (pci.ap_mem_base[idx]) {
 
511
                        iounmap(pci.ap_mem_base[idx]);
 
512
                        pci.ap_mem_base[idx] = NULL;
 
513
                }
 
514
        }
 
515
 
 
516
        if (adapter.p_buffer) {
 
517
                adapter.buffer_size = 0;
 
518
                vfree(adapter.p_buffer);
 
519
        }
 
520
 
 
521
        HPI_DEBUG_LOG(ERROR, "adapter_probe failed\n");
 
522
        return -ENODEV;
 
523
}
 
524
 
 
525
void asihpi_adapter_remove(struct pci_dev *pci_dev)
 
526
{
 
527
        int idx;
 
528
        struct hpi_message hm;
 
529
        struct hpi_response hr;
 
530
        struct hpi_adapter *pa;
 
531
        struct hpi_pci pci;
 
532
 
 
533
        pa = pci_get_drvdata(pci_dev);
 
534
        pci = pa->adapter->pci;
 
535
 
 
536
        /* Disable IRQ generation on DSP side */
 
537
        hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
 
538
                HPI_ADAPTER_SET_PROPERTY);
 
539
        hm.adapter_index = pa->adapter->index;
 
540
        hm.u.ax.property_set.property = HPI_ADAPTER_PROPERTY_IRQ_RATE;
 
541
        hm.u.ax.property_set.parameter1 = 0;
 
542
        hm.u.ax.property_set.parameter2 = 0;
 
543
        hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
 
544
 
 
545
        hpi_init_message_response(&hm, &hr, HPI_OBJ_ADAPTER,
 
546
                HPI_ADAPTER_DELETE);
 
547
        hm.adapter_index = pa->adapter->index;
 
548
        hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
 
549
 
 
550
        /* unmap PCI memory space, mapped during device init. */
 
551
        for (idx = 0; idx < HPI_MAX_ADAPTER_MEM_SPACES; ++idx)
 
552
                iounmap(pci.ap_mem_base[idx]);
 
553
 
 
554
        if (pa->irq)
 
555
                free_irq(pa->irq, pa);
 
556
 
 
557
        vfree(pa->p_buffer);
 
558
 
 
559
        if (1)
 
560
                dev_info(&pci_dev->dev,
 
561
                         "remove %04x:%04x,%04x:%04x,%04x, HPI index %d\n",
 
562
                         pci_dev->vendor, pci_dev->device,
 
563
                         pci_dev->subsystem_vendor, pci_dev->subsystem_device,
 
564
                         pci_dev->devfn, pa->adapter->index);
 
565
 
 
566
        memset(pa, 0, sizeof(*pa));
 
567
}
 
568
 
 
569
void __init asihpi_init(void)
 
570
{
 
571
        struct hpi_message hm;
 
572
        struct hpi_response hr;
 
573
 
 
574
        memset(adapters, 0, sizeof(adapters));
 
575
 
 
576
        printk(KERN_INFO "ASIHPI driver " HPI_VER_STRING "\n");
 
577
 
 
578
        hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
 
579
                HPI_SUBSYS_DRIVER_LOAD);
 
580
        hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
 
581
}
 
582
 
 
583
void asihpi_exit(void)
 
584
{
 
585
        struct hpi_message hm;
 
586
        struct hpi_response hr;
 
587
 
 
588
        hpi_init_message_response(&hm, &hr, HPI_OBJ_SUBSYSTEM,
 
589
                HPI_SUBSYS_DRIVER_UNLOAD);
 
590
        hpi_send_recv_ex(&hm, &hr, HOWNER_KERNEL);
 
591
}