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authorNeilBrown <neilb@suse.de>2010-05-21 18:31:36 -0400
committerNeilBrown <neilb@suse.de>2010-05-21 18:31:36 -0400
commit19fdb9eefb21b72edbc365b838502780c392bad6 (patch)
treedeae04c48532d6eab64ed4b0396737bb854b5506 /sound/pci/asihpi/hpios.h
parentbe6800a73aa2f3dc14744c3b80e676d189789f04 (diff)
parent3ff195b011d7decf501a4d55aeed312731094796 (diff)
Merge commit '3ff195b011d7decf501a4d55aeed312731094796' into for-linus
Conflicts: drivers/md/md.c - Resolved conflict in md_update_sb - Added extra 'NULL' arg to new instance of sysfs_get_dirent. Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'sound/pci/asihpi/hpios.h')
-rw-r--r--sound/pci/asihpi/hpios.h178
1 files changed, 178 insertions, 0 deletions
diff --git a/sound/pci/asihpi/hpios.h b/sound/pci/asihpi/hpios.h
new file mode 100644
index 000000000000..a62c3f1e5f09
--- /dev/null
+++ b/sound/pci/asihpi/hpios.h
@@ -0,0 +1,178 @@
1/******************************************************************************
2
3 AudioScience HPI driver
4 Copyright (C) 1997-2010 AudioScience Inc. <support@audioscience.com>
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of version 2 of the GNU General Public License as
8 published by the Free Software Foundation;
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
19HPI Operating System Specific macros for Linux Kernel driver
20
21(C) Copyright AudioScience Inc. 1997-2003
22******************************************************************************/
23#ifndef _HPIOS_H_
24#define _HPIOS_H_
25
26#undef HPI_OS_LINUX_KERNEL
27#define HPI_OS_LINUX_KERNEL
28
29#define HPI_OS_DEFINED
30#define HPI_KERNEL_MODE
31
32#define HPI_REASSIGN_DUPLICATE_ADAPTER_IDX
33
34#include <linux/io.h>
35#include <asm/system.h>
36#include <linux/ioctl.h>
37#include <linux/kernel.h>
38#include <linux/string.h>
39#include <linux/device.h>
40#include <linux/firmware.h>
41#include <linux/interrupt.h>
42#include <linux/pci.h>
43
44#define HPI_NO_OS_FILE_OPS
45
46#ifdef CONFIG_64BIT
47#define HPI64BIT
48#endif
49
50/** Details of a memory area allocated with pci_alloc_consistent
51Need all info for parameters to pci_free_consistent
52*/
53struct consistent_dma_area {
54 struct device *pdev;
55 /* looks like dma-mapping dma_devres ?! */
56 size_t size;
57 void *vaddr;
58 dma_addr_t dma_handle;
59};
60
61static inline u16 hpios_locked_mem_get_phys_addr(struct consistent_dma_area
62 *locked_mem_handle, u32 *p_physical_addr)
63{
64 *p_physical_addr = locked_mem_handle->dma_handle;
65 return 0;
66}
67
68static inline u16 hpios_locked_mem_get_virt_addr(struct consistent_dma_area
69 *locked_mem_handle, void **pp_virtual_addr)
70{
71 *pp_virtual_addr = locked_mem_handle->vaddr;
72 return 0;
73}
74
75static inline u16 hpios_locked_mem_valid(struct consistent_dma_area
76 *locked_mem_handle)
77{
78 return locked_mem_handle->size != 0;
79}
80
81struct hpi_ioctl_linux {
82 void __user *phm;
83 void __user *phr;
84};
85
86/* Conflict?: H is already used by a number of drivers hid, bluetooth hci,
87 and some sound drivers sb16, hdsp, emu10k. AFAIK 0xFC is ununsed command
88*/
89#define HPI_IOCTL_LINUX _IOWR('H', 0xFC, struct hpi_ioctl_linux)
90
91#define HPI_DEBUG_FLAG_ERROR KERN_ERR
92#define HPI_DEBUG_FLAG_WARNING KERN_WARNING
93#define HPI_DEBUG_FLAG_NOTICE KERN_NOTICE
94#define HPI_DEBUG_FLAG_INFO KERN_INFO
95#define HPI_DEBUG_FLAG_DEBUG KERN_DEBUG
96#define HPI_DEBUG_FLAG_VERBOSE KERN_DEBUG /* kernel has no verbose */
97
98#include <linux/spinlock.h>
99
100#define HPI_LOCKING
101
102struct hpios_spinlock {
103 spinlock_t lock; /* SEE hpios_spinlock */
104 int lock_context;
105};
106
107/* The reason for all this evilness is that ALSA calls some of a drivers
108 * operators in atomic context, and some not. But all our functions channel
109 * through the HPI_Message conduit, so we can't handle the different context
110 * per function
111 */
112#define IN_LOCK_BH 1
113#define IN_LOCK_IRQ 0
114static inline void cond_lock(struct hpios_spinlock *l)
115{
116 if (irqs_disabled()) {
117 /* NO bh or isr can execute on this processor,
118 so ordinary lock will do
119 */
120 spin_lock(&((l)->lock));
121 l->lock_context = IN_LOCK_IRQ;
122 } else {
123 spin_lock_bh(&((l)->lock));
124 l->lock_context = IN_LOCK_BH;
125 }
126}
127
128static inline void cond_unlock(struct hpios_spinlock *l)
129{
130 if (l->lock_context == IN_LOCK_BH)
131 spin_unlock_bh(&((l)->lock));
132 else
133 spin_unlock(&((l)->lock));
134}
135
136#define hpios_msgxlock_init(obj) spin_lock_init(&(obj)->lock)
137#define hpios_msgxlock_lock(obj) cond_lock(obj)
138#define hpios_msgxlock_un_lock(obj) cond_unlock(obj)
139
140#define hpios_dsplock_init(obj) spin_lock_init(&(obj)->dsp_lock.lock)
141#define hpios_dsplock_lock(obj) cond_lock(&(obj)->dsp_lock)
142#define hpios_dsplock_unlock(obj) cond_unlock(&(obj)->dsp_lock)
143
144#ifdef CONFIG_SND_DEBUG
145#define HPI_DEBUG
146#endif
147
148#define HPI_ALIST_LOCKING
149#define hpios_alistlock_init(obj) spin_lock_init(&((obj)->list_lock.lock))
150#define hpios_alistlock_lock(obj) spin_lock(&((obj)->list_lock.lock))
151#define hpios_alistlock_un_lock(obj) spin_unlock(&((obj)->list_lock.lock))
152
153struct hpi_adapter {
154 /* mutex prevents contention for one card
155 between multiple user programs (via ioctl) */
156 struct mutex mutex;
157 u16 index;
158 u16 type;
159
160 /* ALSA card structure */
161 void *snd_card_asihpi;
162
163 char *p_buffer;
164 size_t buffer_size;
165 struct pci_dev *pci;
166 void __iomem *ap_remapped_mem_base[HPI_MAX_ADAPTER_MEM_SPACES];
167};
168
169static inline void hpios_unmap_io(void __iomem *addr,
170 unsigned long size)
171{
172 iounmap(addr);
173}
174
175void __iomem *hpios_map_io(struct pci_dev *pci_dev, int idx,
176 unsigned int length);
177
178#endif