Commit | Line | Data |
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1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * Routine for IRQ handling from GF1/InterWave chip | |
c1017a4c | 4 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
1da177e4 LT |
5 | */ |
6 | ||
1da177e4 LT |
7 | #include <sound/core.h> |
8 | #include <sound/info.h> | |
9 | #include <sound/gus.h> | |
10 | ||
11 | #ifdef CONFIG_SND_DEBUG | |
12 | #define STAT_ADD(x) ((x)++) | |
13 | #else | |
14 | #define STAT_ADD(x) while (0) { ; } | |
15 | #endif | |
16 | ||
7d12e780 | 17 | irqreturn_t snd_gus_interrupt(int irq, void *dev_id) |
1da177e4 | 18 | { |
5e2da206 | 19 | struct snd_gus_card * gus = dev_id; |
1da177e4 LT |
20 | unsigned char status; |
21 | int loop = 100; | |
22 | int handled = 0; | |
23 | ||
24 | __again: | |
25 | status = inb(gus->gf1.reg_irqstat); | |
26 | if (status == 0) | |
27 | return IRQ_RETVAL(handled); | |
28 | handled = 1; | |
91f05060 | 29 | /* snd_printk(KERN_DEBUG "IRQ: status = 0x%x\n", status); */ |
1da177e4 LT |
30 | if (status & 0x02) { |
31 | STAT_ADD(gus->gf1.interrupt_stat_midi_in); | |
c2cbdbb1 IM |
32 | if (gus->gf1.interrupt_handler_midi_in) |
33 | gus->gf1.interrupt_handler_midi_in(gus); | |
1da177e4 LT |
34 | } |
35 | if (status & 0x01) { | |
36 | STAT_ADD(gus->gf1.interrupt_stat_midi_out); | |
c2cbdbb1 IM |
37 | if (gus->gf1.interrupt_handler_midi_out) |
38 | gus->gf1.interrupt_handler_midi_out(gus); | |
1da177e4 LT |
39 | } |
40 | if (status & (0x20 | 0x40)) { | |
41 | unsigned int already, _current_; | |
42 | unsigned char voice_status, voice; | |
5e2da206 | 43 | struct snd_gus_voice *pvoice; |
1da177e4 LT |
44 | |
45 | already = 0; | |
46 | while (((voice_status = snd_gf1_i_read8(gus, SNDRV_GF1_GB_VOICES_IRQ)) & 0xc0) != 0xc0) { | |
47 | voice = voice_status & 0x1f; | |
48 | _current_ = 1 << voice; | |
49 | if (already & _current_) | |
50 | continue; /* multi request */ | |
51 | already |= _current_; /* mark request */ | |
52 | #if 0 | |
91f05060 TI |
53 | printk(KERN_DEBUG "voice = %i, voice_status = 0x%x, " |
54 | "voice_verify = %i\n", | |
55 | voice, voice_status, inb(GUSP(gus, GF1PAGE))); | |
1da177e4 LT |
56 | #endif |
57 | pvoice = &gus->gf1.voices[voice]; | |
58 | if (pvoice->use) { | |
59 | if (!(voice_status & 0x80)) { /* voice position IRQ */ | |
60 | STAT_ADD(pvoice->interrupt_stat_wave); | |
61 | pvoice->handler_wave(gus, pvoice); | |
62 | } | |
63 | if (!(voice_status & 0x40)) { /* volume ramp IRQ */ | |
64 | STAT_ADD(pvoice->interrupt_stat_volume); | |
65 | pvoice->handler_volume(gus, pvoice); | |
66 | } | |
67 | } else { | |
68 | STAT_ADD(gus->gf1.interrupt_stat_voice_lost); | |
69 | snd_gf1_i_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL); | |
70 | snd_gf1_i_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); | |
71 | } | |
72 | } | |
73 | } | |
74 | if (status & 0x04) { | |
75 | STAT_ADD(gus->gf1.interrupt_stat_timer1); | |
c2cbdbb1 IM |
76 | if (gus->gf1.interrupt_handler_timer1) |
77 | gus->gf1.interrupt_handler_timer1(gus); | |
1da177e4 LT |
78 | } |
79 | if (status & 0x08) { | |
80 | STAT_ADD(gus->gf1.interrupt_stat_timer2); | |
c2cbdbb1 IM |
81 | if (gus->gf1.interrupt_handler_timer2) |
82 | gus->gf1.interrupt_handler_timer2(gus); | |
1da177e4 LT |
83 | } |
84 | if (status & 0x80) { | |
85 | if (snd_gf1_i_look8(gus, SNDRV_GF1_GB_DRAM_DMA_CONTROL) & 0x40) { | |
86 | STAT_ADD(gus->gf1.interrupt_stat_dma_write); | |
c2cbdbb1 IM |
87 | if (gus->gf1.interrupt_handler_dma_write) |
88 | gus->gf1.interrupt_handler_dma_write(gus); | |
1da177e4 LT |
89 | } |
90 | if (snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL) & 0x40) { | |
91 | STAT_ADD(gus->gf1.interrupt_stat_dma_read); | |
c2cbdbb1 IM |
92 | if (gus->gf1.interrupt_handler_dma_read) |
93 | gus->gf1.interrupt_handler_dma_read(gus); | |
1da177e4 LT |
94 | } |
95 | } | |
96 | if (--loop > 0) | |
97 | goto __again; | |
98 | return IRQ_NONE; | |
99 | } | |
100 | ||
101 | #ifdef CONFIG_SND_DEBUG | |
5e2da206 TI |
102 | static void snd_gus_irq_info_read(struct snd_info_entry *entry, |
103 | struct snd_info_buffer *buffer) | |
1da177e4 | 104 | { |
5e2da206 TI |
105 | struct snd_gus_card *gus; |
106 | struct snd_gus_voice *pvoice; | |
1da177e4 LT |
107 | int idx; |
108 | ||
109 | gus = entry->private_data; | |
110 | snd_iprintf(buffer, "midi out = %u\n", gus->gf1.interrupt_stat_midi_out); | |
111 | snd_iprintf(buffer, "midi in = %u\n", gus->gf1.interrupt_stat_midi_in); | |
112 | snd_iprintf(buffer, "timer1 = %u\n", gus->gf1.interrupt_stat_timer1); | |
113 | snd_iprintf(buffer, "timer2 = %u\n", gus->gf1.interrupt_stat_timer2); | |
114 | snd_iprintf(buffer, "dma write = %u\n", gus->gf1.interrupt_stat_dma_write); | |
115 | snd_iprintf(buffer, "dma read = %u\n", gus->gf1.interrupt_stat_dma_read); | |
116 | snd_iprintf(buffer, "voice lost = %u\n", gus->gf1.interrupt_stat_voice_lost); | |
117 | for (idx = 0; idx < 32; idx++) { | |
118 | pvoice = &gus->gf1.voices[idx]; | |
119 | snd_iprintf(buffer, "voice %i: wave = %u, volume = %u\n", | |
120 | idx, | |
121 | pvoice->interrupt_stat_wave, | |
122 | pvoice->interrupt_stat_volume); | |
123 | } | |
124 | } | |
125 | ||
5e2da206 | 126 | void snd_gus_irq_profile_init(struct snd_gus_card *gus) |
1da177e4 | 127 | { |
1bac5e1c | 128 | snd_card_ro_proc_new(gus->card, "gusirq", gus, snd_gus_irq_info_read); |
1da177e4 LT |
129 | } |
130 | ||
131 | #endif |