ALSA: fireworks: accessing to user space outside spinlock
[cascardo/linux.git] / sound / firewire / fireworks / fireworks.h
1 /*
2  * fireworks.h - a part of driver for Fireworks based devices
3  *
4  * Copyright (c) 2009-2010 Clemens Ladisch
5  * Copyright (c) 2013-2014 Takashi Sakamoto
6  *
7  * Licensed under the terms of the GNU General Public License, version 2.
8  */
9 #ifndef SOUND_FIREWORKS_H_INCLUDED
10 #define SOUND_FIREWORKS_H_INCLUDED
11
12 #include <linux/compat.h>
13 #include <linux/device.h>
14 #include <linux/firewire.h>
15 #include <linux/firewire-constants.h>
16 #include <linux/module.h>
17 #include <linux/mod_devicetable.h>
18 #include <linux/delay.h>
19 #include <linux/slab.h>
20
21 #include <sound/core.h>
22 #include <sound/initval.h>
23 #include <sound/pcm.h>
24 #include <sound/info.h>
25 #include <sound/rawmidi.h>
26 #include <sound/pcm_params.h>
27 #include <sound/firewire.h>
28 #include <sound/hwdep.h>
29
30 #include "../packets-buffer.h"
31 #include "../iso-resources.h"
32 #include "../amdtp-am824.h"
33 #include "../cmp.h"
34 #include "../lib.h"
35
36 #define SND_EFW_MAX_MIDI_OUT_PORTS      2
37 #define SND_EFW_MAX_MIDI_IN_PORTS       2
38
39 #define SND_EFW_MULTIPLIER_MODES        3
40 #define HWINFO_NAME_SIZE_BYTES          32
41 #define HWINFO_MAX_CAPS_GROUPS          8
42
43 /*
44  * This should be greater than maximum bytes for EFW response content.
45  * Currently response against command for isochronous channel mapping is
46  * confirmed to be the maximum one. But for flexibility, use maximum data
47  * payload for asynchronous primary packets at S100 (Cable base rate) in
48  * IEEE Std 1394-1995.
49  */
50 #define SND_EFW_RESPONSE_MAXIMUM_BYTES  0x200U
51
52 extern unsigned int snd_efw_resp_buf_size;
53 extern bool snd_efw_resp_buf_debug;
54
55 struct snd_efw_phys_grp {
56         u8 type;        /* see enum snd_efw_grp_type */
57         u8 count;
58 } __packed;
59
60 struct snd_efw {
61         struct snd_card *card;
62         struct fw_unit *unit;
63         int card_index;
64
65         struct mutex mutex;
66         spinlock_t lock;
67
68         bool registered;
69         struct delayed_work dwork;
70
71         /* for transaction */
72         u32 seqnum;
73         bool resp_addr_changable;
74
75         /* for quirks */
76         bool is_af9;
77         bool is_fireworks3;
78         u32 firmware_version;
79
80         unsigned int midi_in_ports;
81         unsigned int midi_out_ports;
82
83         unsigned int supported_sampling_rate;
84         unsigned int pcm_capture_channels[SND_EFW_MULTIPLIER_MODES];
85         unsigned int pcm_playback_channels[SND_EFW_MULTIPLIER_MODES];
86
87         struct amdtp_stream tx_stream;
88         struct amdtp_stream rx_stream;
89         struct cmp_connection out_conn;
90         struct cmp_connection in_conn;
91         unsigned int capture_substreams;
92         unsigned int playback_substreams;
93
94         /* hardware metering parameters */
95         unsigned int phys_out;
96         unsigned int phys_in;
97         unsigned int phys_out_grp_count;
98         unsigned int phys_in_grp_count;
99         struct snd_efw_phys_grp phys_out_grps[HWINFO_MAX_CAPS_GROUPS];
100         struct snd_efw_phys_grp phys_in_grps[HWINFO_MAX_CAPS_GROUPS];
101
102         /* for uapi */
103         int dev_lock_count;
104         bool dev_lock_changed;
105         wait_queue_head_t hwdep_wait;
106
107         /* response queue */
108         u8 *resp_buf;
109         u8 *pull_ptr;
110         u8 *push_ptr;
111 };
112
113 int snd_efw_transaction_cmd(struct fw_unit *unit,
114                             const void *cmd, unsigned int size);
115 int snd_efw_transaction_run(struct fw_unit *unit,
116                             const void *cmd, unsigned int cmd_size,
117                             void *resp, unsigned int resp_size);
118 int snd_efw_transaction_register(void);
119 void snd_efw_transaction_unregister(void);
120 void snd_efw_transaction_bus_reset(struct fw_unit *unit);
121 void snd_efw_transaction_add_instance(struct snd_efw *efw);
122 void snd_efw_transaction_remove_instance(struct snd_efw *efw);
123
124 struct snd_efw_hwinfo {
125         u32 flags;
126         u32 guid_hi;
127         u32 guid_lo;
128         u32 type;
129         u32 version;
130         char vendor_name[HWINFO_NAME_SIZE_BYTES];
131         char model_name[HWINFO_NAME_SIZE_BYTES];
132         u32 supported_clocks;
133         u32 amdtp_rx_pcm_channels;
134         u32 amdtp_tx_pcm_channels;
135         u32 phys_out;
136         u32 phys_in;
137         u32 phys_out_grp_count;
138         struct snd_efw_phys_grp phys_out_grps[HWINFO_MAX_CAPS_GROUPS];
139         u32 phys_in_grp_count;
140         struct snd_efw_phys_grp phys_in_grps[HWINFO_MAX_CAPS_GROUPS];
141         u32 midi_out_ports;
142         u32 midi_in_ports;
143         u32 max_sample_rate;
144         u32 min_sample_rate;
145         u32 dsp_version;
146         u32 arm_version;
147         u32 mixer_playback_channels;
148         u32 mixer_capture_channels;
149         u32 fpga_version;
150         u32 amdtp_rx_pcm_channels_2x;
151         u32 amdtp_tx_pcm_channels_2x;
152         u32 amdtp_rx_pcm_channels_4x;
153         u32 amdtp_tx_pcm_channels_4x;
154         u32 reserved[16];
155 } __packed;
156 enum snd_efw_grp_type {
157         SND_EFW_CH_TYPE_ANALOG                  = 0,
158         SND_EFW_CH_TYPE_SPDIF                   = 1,
159         SND_EFW_CH_TYPE_ADAT                    = 2,
160         SND_EFW_CH_TYPE_SPDIF_OR_ADAT           = 3,
161         SND_EFW_CH_TYPE_ANALOG_MIRRORING        = 4,
162         SND_EFW_CH_TYPE_HEADPHONES              = 5,
163         SND_EFW_CH_TYPE_I2S                     = 6,
164         SND_EFW_CH_TYPE_GUITAR                  = 7,
165         SND_EFW_CH_TYPE_PIEZO_GUITAR            = 8,
166         SND_EFW_CH_TYPE_GUITAR_STRING           = 9,
167         SND_EFW_CH_TYPE_DUMMY
168 };
169 struct snd_efw_phys_meters {
170         u32 status;     /* guitar state/midi signal/clock input detect */
171         u32 reserved0;
172         u32 reserved1;
173         u32 reserved2;
174         u32 reserved3;
175         u32 out_meters;
176         u32 in_meters;
177         u32 reserved4;
178         u32 reserved5;
179         u32 values[0];
180 } __packed;
181 enum snd_efw_clock_source {
182         SND_EFW_CLOCK_SOURCE_INTERNAL   = 0,
183         SND_EFW_CLOCK_SOURCE_SYTMATCH   = 1,
184         SND_EFW_CLOCK_SOURCE_WORDCLOCK  = 2,
185         SND_EFW_CLOCK_SOURCE_SPDIF      = 3,
186         SND_EFW_CLOCK_SOURCE_ADAT_1     = 4,
187         SND_EFW_CLOCK_SOURCE_ADAT_2     = 5,
188         SND_EFW_CLOCK_SOURCE_CONTINUOUS = 6     /* internal variable clock */
189 };
190 enum snd_efw_transport_mode {
191         SND_EFW_TRANSPORT_MODE_WINDOWS  = 0,
192         SND_EFW_TRANSPORT_MODE_IEC61883 = 1,
193 };
194 int snd_efw_command_set_resp_addr(struct snd_efw *efw,
195                                   u16 addr_high, u32 addr_low);
196 int snd_efw_command_set_tx_mode(struct snd_efw *efw,
197                                 enum snd_efw_transport_mode mode);
198 int snd_efw_command_get_hwinfo(struct snd_efw *efw,
199                                struct snd_efw_hwinfo *hwinfo);
200 int snd_efw_command_get_phys_meters(struct snd_efw *efw,
201                                     struct snd_efw_phys_meters *meters,
202                                     unsigned int len);
203 int snd_efw_command_get_clock_source(struct snd_efw *efw,
204                                      enum snd_efw_clock_source *source);
205 int snd_efw_command_get_sampling_rate(struct snd_efw *efw, unsigned int *rate);
206 int snd_efw_command_set_sampling_rate(struct snd_efw *efw, unsigned int rate);
207
208 int snd_efw_stream_init_duplex(struct snd_efw *efw);
209 int snd_efw_stream_start_duplex(struct snd_efw *efw, unsigned int rate);
210 void snd_efw_stream_stop_duplex(struct snd_efw *efw);
211 void snd_efw_stream_update_duplex(struct snd_efw *efw);
212 void snd_efw_stream_destroy_duplex(struct snd_efw *efw);
213 void snd_efw_stream_lock_changed(struct snd_efw *efw);
214 int snd_efw_stream_lock_try(struct snd_efw *efw);
215 void snd_efw_stream_lock_release(struct snd_efw *efw);
216
217 void snd_efw_proc_init(struct snd_efw *efw);
218
219 int snd_efw_create_midi_devices(struct snd_efw *efw);
220
221 int snd_efw_create_pcm_devices(struct snd_efw *efw);
222 int snd_efw_get_multiplier_mode(unsigned int sampling_rate, unsigned int *mode);
223
224 int snd_efw_create_hwdep_device(struct snd_efw *efw);
225
226 #define SND_EFW_DEV_ENTRY(vendor, model) \
227 { \
228         .match_flags    = IEEE1394_MATCH_VENDOR_ID | \
229                           IEEE1394_MATCH_MODEL_ID, \
230         .vendor_id      = vendor,\
231         .model_id       = model \
232 }
233
234 #endif