diff options
Diffstat (limited to 'sound/oss/emu10k1/cardmo.c')
-rw-r--r-- | sound/oss/emu10k1/cardmo.c | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/sound/oss/emu10k1/cardmo.c b/sound/oss/emu10k1/cardmo.c new file mode 100644 index 000000000000..5938d31f9e21 --- /dev/null +++ b/sound/oss/emu10k1/cardmo.c | |||
@@ -0,0 +1,229 @@ | |||
1 | /* | ||
2 | ********************************************************************** | ||
3 | * cardmo.c - MIDI UART output HAL for emu10k1 driver | ||
4 | * Copyright 1999, 2000 Creative Labs, Inc. | ||
5 | * | ||
6 | ********************************************************************** | ||
7 | * | ||
8 | * Date Author Summary of changes | ||
9 | * ---- ------ ------------------ | ||
10 | * October 20, 1999 Bertrand Lee base code release | ||
11 | * November 2, 1999 Alan Cox cleaned up | ||
12 | * | ||
13 | ********************************************************************** | ||
14 | * | ||
15 | * This program is free software; you can redistribute it and/or | ||
16 | * modify it under the terms of the GNU General Public License as | ||
17 | * published by the Free Software Foundation; either version 2 of | ||
18 | * the License, or (at your option) any later version. | ||
19 | * | ||
20 | * This program is distributed in the hope that it will be useful, | ||
21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
23 | * GNU General Public License for more details. | ||
24 | * | ||
25 | * You should have received a copy of the GNU General Public | ||
26 | * License along with this program; if not, write to the Free | ||
27 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, | ||
28 | * USA. | ||
29 | * | ||
30 | ********************************************************************** | ||
31 | */ | ||
32 | |||
33 | #include <linux/slab.h> | ||
34 | |||
35 | #include "hwaccess.h" | ||
36 | #include "8010.h" | ||
37 | #include "cardmo.h" | ||
38 | #include "irqmgr.h" | ||
39 | |||
40 | /* Installs the IRQ handler for the MPU out port * | ||
41 | * and initialize parameters */ | ||
42 | |||
43 | int emu10k1_mpuout_open(struct emu10k1_card *card, struct midi_openinfo *openinfo) | ||
44 | { | ||
45 | struct emu10k1_mpuout *card_mpuout = card->mpuout; | ||
46 | |||
47 | DPF(2, "emu10k1_mpuout_open()\n"); | ||
48 | |||
49 | if (!(card_mpuout->status & FLAGS_AVAILABLE)) | ||
50 | return -1; | ||
51 | |||
52 | /* Copy open info and mark channel as in use */ | ||
53 | card_mpuout->intr = 0; | ||
54 | card_mpuout->openinfo = *openinfo; | ||
55 | card_mpuout->status &= ~FLAGS_AVAILABLE; | ||
56 | card_mpuout->laststatus = 0x80; | ||
57 | card_mpuout->firstmidiq = NULL; | ||
58 | card_mpuout->lastmidiq = NULL; | ||
59 | |||
60 | emu10k1_mpu_reset(card); | ||
61 | emu10k1_mpu_acquire(card); | ||
62 | |||
63 | return 0; | ||
64 | } | ||
65 | |||
66 | int emu10k1_mpuout_close(struct emu10k1_card *card) | ||
67 | { | ||
68 | struct emu10k1_mpuout *card_mpuout = card->mpuout; | ||
69 | struct midi_queue *midiq; | ||
70 | struct midi_hdr *midihdr; | ||
71 | unsigned long flags; | ||
72 | |||
73 | DPF(2, "emu10k1_mpuout_close()\n"); | ||
74 | |||
75 | emu10k1_irq_disable(card, card->is_audigy ? A_INTE_MIDITXENABLE : INTE_MIDITXENABLE); | ||
76 | |||
77 | spin_lock_irqsave(&card_mpuout->lock, flags); | ||
78 | |||
79 | while (card_mpuout->firstmidiq != NULL) { | ||
80 | midiq = card_mpuout->firstmidiq; | ||
81 | midihdr = (struct midi_hdr *) midiq->refdata; | ||
82 | |||
83 | card_mpuout->firstmidiq = midiq->next; | ||
84 | |||
85 | kfree(midihdr->data); | ||
86 | kfree(midihdr); | ||
87 | kfree(midiq); | ||
88 | } | ||
89 | |||
90 | card_mpuout->lastmidiq = NULL; | ||
91 | |||
92 | emu10k1_mpu_release(card); | ||
93 | |||
94 | card_mpuout->status |= FLAGS_AVAILABLE; | ||
95 | |||
96 | spin_unlock_irqrestore(&card_mpuout->lock, flags); | ||
97 | |||
98 | return 0; | ||
99 | } | ||
100 | |||
101 | /* If there isn't enough buffer space, reject Midi Buffer. * | ||
102 | * Otherwise, disable TX, create object to hold Midi * | ||
103 | * uffer, update buffer flags and other parameters * | ||
104 | * before enabling TX again. */ | ||
105 | |||
106 | int emu10k1_mpuout_add_buffer(struct emu10k1_card *card, struct midi_hdr *midihdr) | ||
107 | { | ||
108 | struct emu10k1_mpuout *card_mpuout = card->mpuout; | ||
109 | struct midi_queue *midiq; | ||
110 | unsigned long flags; | ||
111 | |||
112 | DPF(2, "emu10k1_mpuout_add_buffer()\n"); | ||
113 | |||
114 | if (card_mpuout->state == CARDMIDIOUT_STATE_SUSPEND) | ||
115 | return 0; | ||
116 | |||
117 | midihdr->flags |= MIDIBUF_INQUEUE; | ||
118 | midihdr->flags &= ~MIDIBUF_DONE; | ||
119 | |||
120 | if ((midiq = (struct midi_queue *) kmalloc(sizeof(struct midi_queue), GFP_KERNEL)) == NULL) { | ||
121 | /* Message lost */ | ||
122 | return -1; | ||
123 | } | ||
124 | |||
125 | midiq->next = NULL; | ||
126 | midiq->qtype = 1; | ||
127 | midiq->length = midihdr->bufferlength; | ||
128 | midiq->sizeLeft = midihdr->bufferlength; | ||
129 | midiq->midibyte = midihdr->data; | ||
130 | |||
131 | midiq->refdata = (unsigned long) midihdr; | ||
132 | |||
133 | spin_lock_irqsave(&card_mpuout->lock, flags); | ||
134 | |||
135 | if (card_mpuout->firstmidiq == NULL) { | ||
136 | card_mpuout->firstmidiq = midiq; | ||
137 | card_mpuout->lastmidiq = midiq; | ||
138 | } else { | ||
139 | (card_mpuout->lastmidiq)->next = midiq; | ||
140 | card_mpuout->lastmidiq = midiq; | ||
141 | } | ||
142 | |||
143 | card_mpuout->intr = 0; | ||
144 | |||
145 | emu10k1_irq_enable(card, card->is_audigy ? A_INTE_MIDITXENABLE : INTE_MIDITXENABLE); | ||
146 | |||
147 | spin_unlock_irqrestore(&card_mpuout->lock, flags); | ||
148 | |||
149 | return 0; | ||
150 | } | ||
151 | |||
152 | void emu10k1_mpuout_bh(unsigned long refdata) | ||
153 | { | ||
154 | struct emu10k1_card *card = (struct emu10k1_card *) refdata; | ||
155 | struct emu10k1_mpuout *card_mpuout = card->mpuout; | ||
156 | int cByteSent = 0; | ||
157 | struct midi_queue *midiq; | ||
158 | struct midi_queue *doneq = NULL; | ||
159 | unsigned long flags; | ||
160 | |||
161 | spin_lock_irqsave(&card_mpuout->lock, flags); | ||
162 | |||
163 | while (card_mpuout->firstmidiq != NULL) { | ||
164 | midiq = card_mpuout->firstmidiq; | ||
165 | |||
166 | while (cByteSent < 4 && midiq->sizeLeft) { | ||
167 | if (emu10k1_mpu_write_data(card, *midiq->midibyte) < 0) { | ||
168 | DPF(2, "emu10k1_mpuoutDpcCallback error!!\n"); | ||
169 | } else { | ||
170 | ++cByteSent; | ||
171 | --midiq->sizeLeft; | ||
172 | ++midiq->midibyte; | ||
173 | } | ||
174 | } | ||
175 | |||
176 | if (midiq->sizeLeft == 0) { | ||
177 | if (doneq == NULL) | ||
178 | doneq = midiq; | ||
179 | card_mpuout->firstmidiq = midiq->next; | ||
180 | } else | ||
181 | break; | ||
182 | } | ||
183 | |||
184 | if (card_mpuout->firstmidiq == NULL) | ||
185 | card_mpuout->lastmidiq = NULL; | ||
186 | |||
187 | if (doneq != NULL) { | ||
188 | while (doneq != card_mpuout->firstmidiq) { | ||
189 | unsigned long callback_msg[3]; | ||
190 | |||
191 | midiq = doneq; | ||
192 | doneq = midiq->next; | ||
193 | |||
194 | if (midiq->qtype) { | ||
195 | callback_msg[0] = 0; | ||
196 | callback_msg[1] = midiq->length; | ||
197 | callback_msg[2] = midiq->refdata; | ||
198 | |||
199 | emu10k1_midi_callback(ICARDMIDI_OUTLONGDATA, card_mpuout->openinfo.refdata, callback_msg); | ||
200 | } else if (((u8) midiq->refdata) < 0xF0 && ((u8) midiq->refdata) > 0x7F) | ||
201 | card_mpuout->laststatus = (u8) midiq->refdata; | ||
202 | |||
203 | kfree(midiq); | ||
204 | } | ||
205 | } | ||
206 | |||
207 | if ((card_mpuout->firstmidiq != NULL) || cByteSent) { | ||
208 | card_mpuout->intr = 0; | ||
209 | emu10k1_irq_enable(card, card->is_audigy ? A_INTE_MIDITXENABLE : INTE_MIDITXENABLE); | ||
210 | } | ||
211 | |||
212 | spin_unlock_irqrestore(&card_mpuout->lock, flags); | ||
213 | |||
214 | return; | ||
215 | } | ||
216 | |||
217 | int emu10k1_mpuout_irqhandler(struct emu10k1_card *card) | ||
218 | { | ||
219 | struct emu10k1_mpuout *card_mpuout = card->mpuout; | ||
220 | |||
221 | DPF(4, "emu10k1_mpuout_irqhandler\n"); | ||
222 | |||
223 | card_mpuout->intr = 1; | ||
224 | emu10k1_irq_disable(card, card->is_audigy ? A_INTE_MIDITXENABLE : INTE_MIDITXENABLE); | ||
225 | |||
226 | tasklet_hi_schedule(&card_mpuout->tasklet); | ||
227 | |||
228 | return 0; | ||
229 | } | ||