1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/******************************************************************************
AudioScience HPI driver
Copyright (C) 1997-2010 AudioScience Inc. <support@audioscience.com>
This program is free software; you can redistribute it and/or modify
it under the terms of version 2 of the GNU General Public License as
published by the Free Software Foundation;
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
HPI Operating System Specific macros for Linux Kernel driver
(C) Copyright AudioScience Inc. 1997-2003
******************************************************************************/
#ifndef _HPIOS_H_
#define _HPIOS_H_
#undef HPI_OS_LINUX_KERNEL
#define HPI_OS_LINUX_KERNEL
#define HPI_OS_DEFINED
#define HPI_KERNEL_MODE
#define HPI_REASSIGN_DUPLICATE_ADAPTER_IDX
#include <linux/io.h>
#include <asm/system.h>
#include <linux/ioctl.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/device.h>
#include <linux/firmware.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#define HPI_NO_OS_FILE_OPS
#ifdef CONFIG_64BIT
#define HPI64BIT
#endif
/** Details of a memory area allocated with pci_alloc_consistent
Need all info for parameters to pci_free_consistent
*/
struct consistent_dma_area {
struct device *pdev;
/* looks like dma-mapping dma_devres ?! */
size_t size;
void *vaddr;
dma_addr_t dma_handle;
};
static inline u16 hpios_locked_mem_get_phys_addr(struct consistent_dma_area
*locked_mem_handle, u32 *p_physical_addr)
{
*p_physical_addr = locked_mem_handle->dma_handle;
return 0;
}
static inline u16 hpios_locked_mem_get_virt_addr(struct consistent_dma_area
*locked_mem_handle, void **pp_virtual_addr)
{
*pp_virtual_addr = locked_mem_handle->vaddr;
return 0;
}
static inline u16 hpios_locked_mem_valid(struct consistent_dma_area
*locked_mem_handle)
{
return locked_mem_handle->size != 0;
}
struct hpi_ioctl_linux {
void __user *phm;
void __user *phr;
};
/* Conflict?: H is already used by a number of drivers hid, bluetooth hci,
and some sound drivers sb16, hdsp, emu10k. AFAIK 0xFC is ununsed command
*/
#define HPI_IOCTL_LINUX _IOWR('H', 0xFC, struct hpi_ioctl_linux)
#define HPI_DEBUG_FLAG_ERROR KERN_ERR
#define HPI_DEBUG_FLAG_WARNING KERN_WARNING
#define HPI_DEBUG_FLAG_NOTICE KERN_NOTICE
#define HPI_DEBUG_FLAG_INFO KERN_INFO
#define HPI_DEBUG_FLAG_DEBUG KERN_DEBUG
#define HPI_DEBUG_FLAG_VERBOSE KERN_DEBUG /* kernel has no verbose */
#include <linux/spinlock.h>
#define HPI_LOCKING
struct hpios_spinlock {
spinlock_t lock; /* SEE hpios_spinlock */
int lock_context;
};
/* The reason for all this evilness is that ALSA calls some of a drivers
* operators in atomic context, and some not. But all our functions channel
* through the HPI_Message conduit, so we can't handle the different context
* per function
*/
#define IN_LOCK_BH 1
#define IN_LOCK_IRQ 0
static inline void cond_lock(struct hpios_spinlock *l)
{
if (irqs_disabled()) {
/* NO bh or isr can execute on this processor,
so ordinary lock will do
*/
spin_lock(&((l)->lock));
l->lock_context = IN_LOCK_IRQ;
} else {
spin_lock_bh(&((l)->lock));
l->lock_context = IN_LOCK_BH;
}
}
static inline void cond_unlock(struct hpios_spinlock *l)
{
if (l->lock_context == IN_LOCK_BH)
spin_unlock_bh(&((l)->lock));
else
spin_unlock(&((l)->lock));
}
#define hpios_msgxlock_init(obj) spin_lock_init(&(obj)->lock)
#define hpios_msgxlock_lock(obj) cond_lock(obj)
#define hpios_msgxlock_un_lock(obj) cond_unlock(obj)
#define hpios_dsplock_init(obj) spin_lock_init(&(obj)->dsp_lock.lock)
#define hpios_dsplock_lock(obj) cond_lock(&(obj)->dsp_lock)
#define hpios_dsplock_unlock(obj) cond_unlock(&(obj)->dsp_lock)
#ifdef CONFIG_SND_DEBUG
#define HPI_DEBUG
#endif
#define HPI_ALIST_LOCKING
#define hpios_alistlock_init(obj) spin_lock_init(&((obj)->list_lock.lock))
#define hpios_alistlock_lock(obj) spin_lock(&((obj)->list_lock.lock))
#define hpios_alistlock_un_lock(obj) spin_unlock(&((obj)->list_lock.lock))
struct hpi_adapter {
/* mutex prevents contention for one card
between multiple user programs (via ioctl) */
struct mutex mutex;
u16 index;
u16 type;
/* ALSA card structure */
void *snd_card_asihpi;
char *p_buffer;
size_t buffer_size;
struct pci_dev *pci;
void __iomem *ap_remapped_mem_base[HPI_MAX_ADAPTER_MEM_SPACES];
};
#endif
|
