Linux-2.6.12-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