Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 142 insertions, 0 deletions

diff --git a/sound/isa/gus/gus_irq.c b/sound/isa/gus/gus_irq.c
new file mode 100644
index 000000000000..1e2a15eb8106
--- /dev/null
+++ b/sound/isa/gus/gus_irq.c
@@ -0,0 +1,142 @@
+/*
+ *  Routine for IRQ handling from GF1/InterWave chip
+ *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
+ *
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   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
+ *
+ */
+
+#include <sound/driver.h>
+#include <sound/core.h>
+#include <sound/info.h>
+#include <sound/gus.h>
+
+#ifdef CONFIG_SND_DEBUG
+#define STAT_ADD(x)     ((x)++)
+#else
+#define STAT_ADD(x)     while (0) { ; }
+#endif
+
+irqreturn_t snd_gus_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+        snd_gus_card_t * gus = dev_id;
+        unsigned char status;
+        int loop = 100;
+        int handled = 0;
+
+__again:
+        status = inb(gus->gf1.reg_irqstat);
+        if (status == 0)
+                return IRQ_RETVAL(handled);
+        handled = 1;
+        // snd_printk("IRQ: status = 0x%x\n", status);
+        if (status & 0x02) {
+                STAT_ADD(gus->gf1.interrupt_stat_midi_in);
+                gus->gf1.interrupt_handler_midi_in(gus);
+        }
+        if (status & 0x01) {
+                STAT_ADD(gus->gf1.interrupt_stat_midi_out);
+                gus->gf1.interrupt_handler_midi_out(gus);
+        }
+        if (status & (0x20 | 0x40)) {
+                unsigned int already, _current_;
+                unsigned char voice_status, voice;
+                snd_gus_voice_t *pvoice;
+
+                already = 0;
+                while (((voice_status = snd_gf1_i_read8(gus, SNDRV_GF1_GB_VOICES_IRQ)) & 0xc0) != 0xc0) {
+                        voice = voice_status & 0x1f;
+                        _current_ = 1 << voice;
+                        if (already & _current_)
+                                continue;       /* multi request */
+                        already |= _current_;   /* mark request */
+#if 0
+                        printk("voice = %i, voice_status = 0x%x, voice_verify = %i\n", voice, voice_status, inb(GUSP(gus, GF1PAGE)));
+#endif
+                        pvoice = &gus->gf1.voices[voice]; 
+                        if (pvoice->use) {
+                                if (!(voice_status & 0x80)) {   /* voice position IRQ */
+                                        STAT_ADD(pvoice->interrupt_stat_wave);
+                                        pvoice->handler_wave(gus, pvoice);
+                                }
+                                if (!(voice_status & 0x40)) {   /* volume ramp IRQ */
+                                        STAT_ADD(pvoice->interrupt_stat_volume);
+                                        pvoice->handler_volume(gus, pvoice);
+                                }
+                        } else {
+                                STAT_ADD(gus->gf1.interrupt_stat_voice_lost);
+                                snd_gf1_i_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
+                                snd_gf1_i_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
+                        }
+                }
+        }
+        if (status & 0x04) {
+                STAT_ADD(gus->gf1.interrupt_stat_timer1);
+                gus->gf1.interrupt_handler_timer1(gus);
+        }
+        if (status & 0x08) {
+                STAT_ADD(gus->gf1.interrupt_stat_timer2);
+                gus->gf1.interrupt_handler_timer2(gus);
+        }
+        if (status & 0x80) {
+                if (snd_gf1_i_look8(gus, SNDRV_GF1_GB_DRAM_DMA_CONTROL) & 0x40) {
+                        STAT_ADD(gus->gf1.interrupt_stat_dma_write);
+                        gus->gf1.interrupt_handler_dma_write(gus);
+                }
+                if (snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL) & 0x40) {
+                        STAT_ADD(gus->gf1.interrupt_stat_dma_read);
+                        gus->gf1.interrupt_handler_dma_read(gus);
+                }
+        }
+        if (--loop > 0)
+                goto __again;
+        return IRQ_NONE;
+}
+
+#ifdef CONFIG_SND_DEBUG
+static void snd_gus_irq_info_read(snd_info_entry_t *entry, 
+                                  snd_info_buffer_t * buffer)
+{
+        snd_gus_card_t *gus;
+        snd_gus_voice_t *pvoice;
+        int idx;
+
+        gus = entry->private_data;
+        snd_iprintf(buffer, "midi out = %u\n", gus->gf1.interrupt_stat_midi_out);
+        snd_iprintf(buffer, "midi in = %u\n", gus->gf1.interrupt_stat_midi_in);
+        snd_iprintf(buffer, "timer1 = %u\n", gus->gf1.interrupt_stat_timer1);
+        snd_iprintf(buffer, "timer2 = %u\n", gus->gf1.interrupt_stat_timer2);
+        snd_iprintf(buffer, "dma write = %u\n", gus->gf1.interrupt_stat_dma_write);
+        snd_iprintf(buffer, "dma read = %u\n", gus->gf1.interrupt_stat_dma_read);
+        snd_iprintf(buffer, "voice lost = %u\n", gus->gf1.interrupt_stat_voice_lost);
+        for (idx = 0; idx < 32; idx++) {
+                pvoice = &gus->gf1.voices[idx];
+                snd_iprintf(buffer, "voice %i: wave = %u, volume = %u\n",
+                                        idx,
+                                        pvoice->interrupt_stat_wave,
+                                        pvoice->interrupt_stat_volume);
+        }
+}
+
+void snd_gus_irq_profile_init(snd_gus_card_t *gus)
+{
+        snd_info_entry_t *entry;
+
+        if (! snd_card_proc_new(gus->card, "gusirq", &entry))
+                snd_info_set_text_ops(entry, gus, 1024, snd_gus_irq_info_read);
+}
+
+#endif