interwave.c

是关于linux2.5.1的完全源码

		if (inb(iwcard->gus_status_reg)) {
			snd_gus_interrupt(irq, iwcard->gus, regs);
			loop++;
		}
		if (inb(iwcard->pcm_status_reg) & 0x01) {	/* IRQ bit is set? */
			snd_cs4231_interrupt(irq, iwcard->cs4231, regs);
			loop++;
		}
	} while (loop && --max > 0);
}

static void __init snd_interwave_reset(snd_gus_card_t * gus)
{
	snd_gf1_write8(gus, SNDRV_GF1_GB_RESET, 0x00);
	udelay(160);
	snd_gf1_write8(gus, SNDRV_GF1_GB_RESET, 0x01);
	udelay(160);
}

static void __init snd_interwave_bank_sizes(snd_gus_card_t * gus, int *sizes)
{
	unsigned int idx;
	unsigned int local;
	unsigned char d;

	for (idx = 0; idx < 4; idx++) {
		sizes[idx] = 0;
		d = 0x55;
		for (local = idx << 22;
		     local < (idx << 22) + 0x400000;
		     local += 0x40000, d++) {
			snd_gf1_poke(gus, local, d);
			snd_gf1_poke(gus, local + 1, d + 1);
#if 0
			printk("d = 0x%x, local = 0x%x, local + 1 = 0x%x, idx << 22 = 0x%x\n",
			       d,
			       snd_gf1_peek(gus, local),
			       snd_gf1_peek(gus, local + 1),
			       snd_gf1_peek(gus, idx << 22));
#endif
			if (snd_gf1_peek(gus, local) != d ||
			    snd_gf1_peek(gus, local + 1) != d + 1 ||
			    snd_gf1_peek(gus, idx << 22) != 0x55)
				break;
			sizes[idx]++;
		}
	}
#if 0
	printk("sizes: %i %i %i %i\n", sizes[0], sizes[1], sizes[2], sizes[3]);
#endif
}

struct rom_hdr {
	/* 000 */ unsigned char iwave[8];
	/* 008 */ unsigned char rom_hdr_revision;
	/* 009 */ unsigned char series_number;
	/* 010 */ unsigned char series_name[16];
	/* 026 */ unsigned char date[10];
	/* 036 */ unsigned short vendor_revision_major;
	/* 038 */ unsigned short vendor_revision_minor;
	/* 040 */ unsigned int rom_size;
	/* 044 */ unsigned char copyright[128];
	/* 172 */ unsigned char vendor_name[64];
	/* 236 */ unsigned char rom_description[128];
	/* 364 */ unsigned char pad[147];
	/* 511 */ unsigned char csum;
};

static void __init snd_interwave_detect_memory(snd_gus_card_t * gus)
{
	static unsigned int lmc[13] =
	{
		0x00000001, 0x00000101, 0x01010101, 0x00000401,
		0x04040401, 0x00040101, 0x04040101, 0x00000004,
		0x00000404, 0x04040404, 0x00000010, 0x00001010,
		0x10101010
	};

	int bank_pos, pages;
	unsigned int i, lmct;
	int psizes[4];
	unsigned char csum;
	struct rom_hdr romh;

	snd_interwave_reset(gus);
	snd_gf1_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_read8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01);		/* enhanced mode */
	snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);	/* DRAM I/O cycles selected */
	snd_gf1_write16(gus, SNDRV_GF1_GW_MEMORY_CONFIG, (snd_gf1_look16(gus, SNDRV_GF1_GW_MEMORY_CONFIG) & 0xff10) | 0x004c);
	/* ok.. simple test of memory size */
	pages = 0;
	snd_gf1_poke(gus, 0, 0x55);
	snd_gf1_poke(gus, 1, 0xaa);
#if 1
	if (snd_gf1_peek(gus, 0) == 0x55 && snd_gf1_peek(gus, 1) == 0xaa)
#else
	if (0)			/* ok.. for testing of 0k RAM */
#endif
	{
		snd_interwave_bank_sizes(gus, psizes);
		lmct = (psizes[3] << 24) | (psizes[2] << 16) |
		    (psizes[1] << 8) | psizes[0];
#if 0
		printk("lmct = 0x%08x\n", lmct);
#endif
		for (i = 0; i < sizeof(lmc) / sizeof(unsigned int); i++)
			if (lmct == lmc[i]) {
#if 0
				printk("found !!! %i\n", i);
#endif
				snd_gf1_write16(gus, SNDRV_GF1_GW_MEMORY_CONFIG, (snd_gf1_look16(gus, SNDRV_GF1_GW_MEMORY_CONFIG) & 0xfff0) | i);
				snd_interwave_bank_sizes(gus, psizes);
				break;
			}
		if (i >= sizeof(lmc) / sizeof(unsigned int) && !gus->gf1.enh_mode)
			 snd_gf1_write16(gus, SNDRV_GF1_GW_MEMORY_CONFIG, (snd_gf1_look16(gus, SNDRV_GF1_GW_MEMORY_CONFIG) & 0xfff0) | 2);
		for (i = 0; i < 4; i++) {
			gus->gf1.mem_alloc.banks_8[i].address =
			    gus->gf1.mem_alloc.banks_16[i].address = i << 22;
			gus->gf1.mem_alloc.banks_8[i].size =
			    gus->gf1.mem_alloc.banks_16[i].size = psizes[i] << 18;
			pages += psizes[i];
		}
	}
	pages <<= 18;
	gus->gf1.memory = pages;

	snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x03);	/* select ROM */
	snd_gf1_write16(gus, SNDRV_GF1_GW_MEMORY_CONFIG, (snd_gf1_look16(gus, SNDRV_GF1_GW_MEMORY_CONFIG) & 0xff1f) | (4 << 5));
	gus->gf1.rom_banks = 0;
	gus->gf1.rom_memory = 0;
	for (bank_pos = 0; bank_pos < 16L * 1024L * 1024L; bank_pos += 4L * 1024L * 1024L) {
		for (i = 0; i < sizeof(struct rom_hdr); i++)
			*(((unsigned char *) &romh) + i) = snd_gf1_peek(gus, i + bank_pos);
#ifdef CONFIG_SND_DEBUG_ROM
		printk("ROM at 0x%06x = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x\n", bank_pos,
		       romh.iwave[0], romh.iwave[1], romh.iwave[2], romh.iwave[3],
		       romh.iwave[4], romh.iwave[5], romh.iwave[6], romh.iwave[7]);
#endif
		if (strncmp(romh.iwave, "INTRWAVE", 8))
			continue;	/* first check */
		csum = 0;
		for (i = 0; i < sizeof(struct rom_hdr) - 1; i++)
			csum += *(((unsigned char *) &romh) + i);
#ifdef CONFIG_SND_DEBUG_ROM
		printk("ROM checksum = 0x%x == 0x%x (computed)\n", romh.csum, (unsigned char) (256 - csum));
#endif
		if (256 - csum != romh.csum)
			continue;	/* not valid rom */
		gus->gf1.rom_banks++;
		gus->gf1.rom_present |= 1 << (bank_pos >> 22);
#ifdef SNDRV_LITTLE_ENDIAN
		gus->gf1.rom_memory = romh.rom_size;
#else
		gus->gf1.rom_memory = ((romh.rom_size >> 24) & 0x000000ff) |
				      ((romh.rom_size >>  8) & 0x0000ff00) |
				      ((romh.rom_size <<  8) & 0x00ff0000) |
				      ((romh.rom_size << 24) & 0xff000000);
#endif
	}
#if 0
	if (gus->gf1.rom_memory > 0) {
		if (gus->gf1.rom_banks == 1 && gus->gf1.rom_present == 8)
			gus->card->type = SNDRV_CARD_TYPE_IW_DYNASONIC;
	}
#endif
	snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x00);	/* select RAM */

	if (!gus->gf1.enh_mode)
		snd_interwave_reset(gus);
}

static void __init snd_interwave_init(int dev, snd_gus_card_t * gus)
{
	unsigned long flags;

	/* ok.. some InterWave specific initialization */
	spin_lock_irqsave(&gus->reg_lock, flags);
	snd_gf1_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, 0x00);
	snd_gf1_write8(gus, SNDRV_GF1_GB_COMPATIBILITY, 0x1f);
	snd_gf1_write8(gus, SNDRV_GF1_GB_DECODE_CONTROL, 0x49);
	snd_gf1_write8(gus, SNDRV_GF1_GB_VERSION_NUMBER, 0x11);
	snd_gf1_write8(gus, SNDRV_GF1_GB_MPU401_CONTROL_A, 0x00);
	snd_gf1_write8(gus, SNDRV_GF1_GB_MPU401_CONTROL_B, 0x30);
	snd_gf1_write8(gus, SNDRV_GF1_GB_EMULATION_IRQ, 0x00);
	spin_unlock_irqrestore(&gus->reg_lock, flags);
	gus->equal_irq = 1;
	gus->codec_flag = 1;
	gus->interwave = 1;
	gus->max_flag = 1;
	gus->joystick_dac = snd_joystick_dac[dev];

}

#define INTERWAVE_CONTROLS (sizeof(snd_interwave_controls)/sizeof(snd_kcontrol_new_t))

static snd_kcontrol_new_t snd_interwave_controls[] = {
CS4231_DOUBLE("Master Playback Switch", 0, CS4231_LINE_LEFT_OUTPUT, CS4231_LINE_RIGHT_OUTPUT, 7, 7, 1, 1),
CS4231_DOUBLE("Master Playback Volume", 0, CS4231_LINE_LEFT_OUTPUT, CS4231_LINE_RIGHT_OUTPUT, 0, 0, 31, 1),
CS4231_DOUBLE("Mic Playback Switch", 0, CS4231_LEFT_MIC_INPUT, CS4231_RIGHT_MIC_INPUT, 7, 7, 1, 1),
CS4231_DOUBLE("Mic Playback Volume", 0, CS4231_LEFT_MIC_INPUT, CS4231_RIGHT_MIC_INPUT, 0, 0, 31, 1)
};

static int __init snd_interwave_mixer(cs4231_t *chip)
{
	snd_card_t *card = chip->card;
	snd_ctl_elem_id_t id1, id2;
	int idx, err;

	memset(&id1, 0, sizeof(id1));
	memset(&id2, 0, sizeof(id2));
	id1.iface = id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
#if 0
	/* remove mono microphone controls */
	strcpy(id1.name, "Mic Playback Switch");
	if ((err = snd_ctl_remove_id(card, &id1)) < 0)
		return err;
	strcpy(id1.name, "Mic Playback Volume");
	if ((err = snd_ctl_remove_id(card, &id1)) < 0)
		return err;
#endif
	/* add new master and mic controls */
	for (idx = 0; idx < INTERWAVE_CONTROLS; idx++)
		if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_interwave_controls[idx], chip))) < 0)
			return err;
	snd_cs4231_out(chip, CS4231_LINE_LEFT_OUTPUT, 0x9f);
	snd_cs4231_out(chip, CS4231_LINE_RIGHT_OUTPUT, 0x9f);
	snd_cs4231_out(chip, CS4231_LEFT_MIC_INPUT, 0x9f);
	snd_cs4231_out(chip, CS4231_RIGHT_MIC_INPUT, 0x9f);
	/* reassign AUXA to SYNTHESIZER */
	strcpy(id1.name, "Aux Playback Switch");
	strcpy(id2.name, "Synth Playback Switch");
	if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
		return err;
	strcpy(id1.name, "Aux Playback Volume");
	strcpy(id2.name, "Synth Playback Volume");
	if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
		return err;
	/* reassign AUXB to CD */
	strcpy(id1.name, "Aux Playback Switch"); id1.index = 1;
	strcpy(id2.name, "CD Playback Switch");
	if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
		return err;
	strcpy(id1.name, "Aux Playback Volume");
	strcpy(id2.name, "CD Playback Volume");
	if ((err = snd_ctl_rename_id(card, &id1, &id2)) < 0)
		return err;
	return 0;
}

#ifdef __ISAPNP__

static int __init snd_interwave_isapnp(int dev, struct snd_interwave *iwcard)
{
	const struct isapnp_card_id *id = snd_interwave_isapnp_id[dev];
	struct isapnp_card *card = snd_interwave_isapnp_cards[dev];
	struct isapnp_dev *pdev;

	iwcard->dev = isapnp_find_dev(card, id->devs[0].vendor, id->devs[0].function, NULL);
	if (iwcard->dev->active) {
		iwcard->dev = NULL;
		return -EBUSY;
	}
#ifdef SNDRV_STB
	iwcard->devtc = isapnp_find_dev(card, id->devs[1].vendor, id->devs[1].function, NULL);
	if (iwcard->devtc->active) {
		iwcard->dev = iwcard->devtc = NULL;
		return -EBUSY;
	}
#endif
	/* Synth & Codec initialization */
	pdev = iwcard->dev;
	if (pdev->prepare(pdev)<0)
		return -EAGAIN;
	if (snd_port[dev] != SNDRV_AUTO_PORT) {
		isapnp_resource_change(&pdev->resource[0], snd_port[dev], 16);
		isapnp_resource_change(&pdev->resource[1], snd_port[dev] + 0x100, 12);
		isapnp_resource_change(&pdev->resource[2], snd_port[dev] + 0x10c, 4);
	}
	if (snd_dma1[dev] != SNDRV_AUTO_DMA)
		isapnp_resource_change(&pdev->dma_resource[0], snd_dma1[dev], 1);
	if (snd_dma2[dev] != SNDRV_AUTO_DMA)
		isapnp_resource_change(&pdev->dma_resource[1], snd_dma2[dev], 1);
	if (snd_dma2[dev] < 0)
		isapnp_resource_change(&pdev->dma_resource[1], 4, 1);
	if (snd_irq[dev] != SNDRV_AUTO_IRQ)
		isapnp_resource_change(&pdev->irq_resource[0], snd_irq[dev], 1);
	if (pdev->activate(pdev)<0) {
		snd_printk("isapnp configure failure (out of resources?)\n");
		return -EBUSY;
	}
	if (pdev->resource[0].start + 0x100 != pdev->resource[1].start ||
	    pdev->resource[0].start + 0x10c != pdev->resource[2].start) {
		snd_printk("isapnp configure failure (wrong ports)\n");
		pdev->deactivate(pdev);
		return -ENOENT;
	}
	snd_port[dev] = pdev->resource[0].start;
	snd_dma1[dev] = pdev->dma_resource[0].start;
	if (snd_dma2[dev] >= 0)
		snd_dma2[dev] = pdev->dma_resource[1].start;
	snd_irq[dev] = pdev->irq_resource[0].start;
	snd_printdd("isapnp IW: sb port=0x%lx, gf1 port=0x%lx, codec port=0x%lx\n",
				pdev->resource[0].start,
				pdev->resource[1].start,
				pdev->resource[2].start);
	snd_printdd("isapnp IW: dma1=%i, dma2=%i, irq=%i\n", snd_dma1[dev], snd_dma2[dev], snd_irq[dev]);
#ifdef SNDRV_STB
	/* Tone Control initialization */
	pdev = iwcard->devtc;
	if (pdev->prepare(pdev)<0) {
		iwcard->dev->deactivate(iwcard->dev);
		return -EAGAIN;
	}
	if (snd_port_tc[dev] != SNDRV_AUTO_PORT)
		isapnp_resource_change(&pdev->resource[0], snd_port_tc[dev], 1);
	if (pdev->activate(pdev)<0) {
		snd_printk("Tone Control isapnp configure failure (out of resources?)\n");
		iwcard->dev->deactivate(iwcard->dev);
		return -EBUSY;
	}
	snd_port_tc[dev] = pdev->resource[0].start;
	snd_printdd("isapnp IW: tone control port=0x%lx\n", snd_port_tc[dev]);
#endif
	return 0;
}

static void snd_interwave_deactivate(struct snd_interwave *iwcard)
{
	if (iwcard->dev) {
		iwcard->dev->deactivate(iwcard->dev);
		iwcard->dev = NULL;
	}
#ifdef SNDRV_STB
	if (iwcard->devtc) {
		iwcard->devtc->deactivate(iwcard->devtc);
		iwcard->devtc = NULL;
	}
#endif
}

#endif /* __ISAPNP__ */