ymfpci_main.c

鼎力推荐！本程序是基于嵌入式LUNUX系统开发的源程序代码

	chip->timer = timer;
	return err;
}


/*
 *  proc interface
 */

static void snd_ymfpci_proc_read(snd_info_entry_t *entry, 
				 snd_info_buffer_t * buffer)
{
	ymfpci_t *chip = entry->private_data;
	int i;
	
	snd_iprintf(buffer, "YMFPCI\n\n");
	for (i = 0; i <= YDSXGR_WORKBASE; i += 4)
		snd_iprintf(buffer, "%04x: %04x\n", i, snd_ymfpci_readl(chip, i));
}

static int __devinit snd_ymfpci_proc_init(snd_card_t * card, ymfpci_t *chip)
{
	snd_info_entry_t *entry;
	
	if (! snd_card_proc_new(card, "ymfpci", &entry))
		snd_info_set_text_ops(entry, chip, 1024, snd_ymfpci_proc_read);
	return 0;
}

/*
 *  initialization routines
 */

static void snd_ymfpci_aclink_reset(struct pci_dev * pci)
{
	u8 cmd;

	pci_read_config_byte(pci, PCIR_DSXG_CTRL, &cmd);
#if 0 // force to reset
	if (cmd & 0x03) {
#endif
		pci_write_config_byte(pci, PCIR_DSXG_CTRL, cmd & 0xfc);
		pci_write_config_byte(pci, PCIR_DSXG_CTRL, cmd | 0x03);
		pci_write_config_byte(pci, PCIR_DSXG_CTRL, cmd & 0xfc);
		pci_write_config_word(pci, PCIR_DSXG_PWRCTRL1, 0);
		pci_write_config_word(pci, PCIR_DSXG_PWRCTRL2, 0);
#if 0
	}
#endif
}

static void snd_ymfpci_enable_dsp(ymfpci_t *chip)
{
	snd_ymfpci_writel(chip, YDSXGR_CONFIG, 0x00000001);
}

static void snd_ymfpci_disable_dsp(ymfpci_t *chip)
{
	u32 val;
	int timeout = 1000;

	val = snd_ymfpci_readl(chip, YDSXGR_CONFIG);
	if (val)
		snd_ymfpci_writel(chip, YDSXGR_CONFIG, 0x00000000);
	while (timeout-- > 0) {
		val = snd_ymfpci_readl(chip, YDSXGR_STATUS);
		if ((val & 0x00000002) == 0)
			break;
	}
}

#include "ymfpci_image.h"

static void snd_ymfpci_download_image(ymfpci_t *chip)
{
	int i;
	u16 ctrl;
	unsigned long *inst;

	snd_ymfpci_writel(chip, YDSXGR_NATIVEDACOUTVOL, 0x00000000);
	snd_ymfpci_disable_dsp(chip);
	snd_ymfpci_writel(chip, YDSXGR_MODE, 0x00010000);
	snd_ymfpci_writel(chip, YDSXGR_MODE, 0x00000000);
	snd_ymfpci_writel(chip, YDSXGR_MAPOFREC, 0x00000000);
	snd_ymfpci_writel(chip, YDSXGR_MAPOFEFFECT, 0x00000000);
	snd_ymfpci_writel(chip, YDSXGR_PLAYCTRLBASE, 0x00000000);
	snd_ymfpci_writel(chip, YDSXGR_RECCTRLBASE, 0x00000000);
	snd_ymfpci_writel(chip, YDSXGR_EFFCTRLBASE, 0x00000000);
	ctrl = snd_ymfpci_readw(chip, YDSXGR_GLOBALCTRL);
	snd_ymfpci_writew(chip, YDSXGR_GLOBALCTRL, ctrl & ~0x0007);

	/* setup DSP instruction code */
	for (i = 0; i < YDSXG_DSPLENGTH / 4; i++)
		snd_ymfpci_writel(chip, YDSXGR_DSPINSTRAM + (i << 2), DspInst[i]);

	/* setup control instruction code */
	switch (chip->device_id) {
	case PCI_DEVICE_ID_YAMAHA_724F:
	case PCI_DEVICE_ID_YAMAHA_740C:
	case PCI_DEVICE_ID_YAMAHA_744:
	case PCI_DEVICE_ID_YAMAHA_754:
		inst = CntrlInst1E;
		break;
	default:
		inst = CntrlInst;
		break;
	}
	for (i = 0; i < YDSXG_CTRLLENGTH / 4; i++)
		snd_ymfpci_writel(chip, YDSXGR_CTRLINSTRAM + (i << 2), inst[i]);

	snd_ymfpci_enable_dsp(chip);
}

static int __devinit snd_ymfpci_memalloc(ymfpci_t *chip)
{
	long size, playback_ctrl_size;
	int voice, bank, reg;
	u8 *ptr;
	dma_addr_t ptr_addr;

	playback_ctrl_size = 4 + 4 * YDSXG_PLAYBACK_VOICES;
	chip->bank_size_playback = snd_ymfpci_readl(chip, YDSXGR_PLAYCTRLSIZE) << 2;
	chip->bank_size_capture = snd_ymfpci_readl(chip, YDSXGR_RECCTRLSIZE) << 2;
	chip->bank_size_effect = snd_ymfpci_readl(chip, YDSXGR_EFFCTRLSIZE) << 2;
	chip->work_size = YDSXG_DEFAULT_WORK_SIZE;
	
	size = ((playback_ctrl_size + 0x00ff) & ~0x00ff) +
	       ((chip->bank_size_playback * 2 * YDSXG_PLAYBACK_VOICES + 0x00ff) & ~0x00ff) +
	       ((chip->bank_size_capture * 2 * YDSXG_CAPTURE_VOICES + 0x00ff) & ~0x00ff) +
	       ((chip->bank_size_effect * 2 * YDSXG_EFFECT_VOICES + 0x00ff) & ~0x00ff) +
	       chip->work_size;
	/* work_ptr must be aligned to 256 bytes, but it's already
	   covered with the kernel page allocation mechanism */
	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci),
				size, &chip->work_ptr) < 0) 
		return -ENOMEM;
	ptr = chip->work_ptr.area;
	ptr_addr = chip->work_ptr.addr;
	memset(ptr, 0, size);	/* for sure */

	chip->bank_base_playback = ptr;
	chip->bank_base_playback_addr = ptr_addr;
	chip->ctrl_playback = (u32 *)ptr;
	chip->ctrl_playback[0] = cpu_to_le32(YDSXG_PLAYBACK_VOICES);
	ptr += (playback_ctrl_size + 0x00ff) & ~0x00ff;
	ptr_addr += (playback_ctrl_size + 0x00ff) & ~0x00ff;
	for (voice = 0; voice < YDSXG_PLAYBACK_VOICES; voice++) {
		chip->voices[voice].number = voice;
		chip->voices[voice].bank = (snd_ymfpci_playback_bank_t *)ptr;
		chip->voices[voice].bank_addr = ptr_addr;
		for (bank = 0; bank < 2; bank++) {
			chip->bank_playback[voice][bank] = (snd_ymfpci_playback_bank_t *)ptr;
			ptr += chip->bank_size_playback;
			ptr_addr += chip->bank_size_playback;
		}
	}
	ptr = (char *)(((unsigned long)ptr + 0x00ff) & ~0x00ff);
	ptr_addr = (ptr_addr + 0x00ff) & ~0x00ff;
	chip->bank_base_capture = ptr;
	chip->bank_base_capture_addr = ptr_addr;
	for (voice = 0; voice < YDSXG_CAPTURE_VOICES; voice++)
		for (bank = 0; bank < 2; bank++) {
			chip->bank_capture[voice][bank] = (snd_ymfpci_capture_bank_t *)ptr;
			ptr += chip->bank_size_capture;
			ptr_addr += chip->bank_size_capture;
		}
	ptr = (char *)(((unsigned long)ptr + 0x00ff) & ~0x00ff);
	ptr_addr = (ptr_addr + 0x00ff) & ~0x00ff;
	chip->bank_base_effect = ptr;
	chip->bank_base_effect_addr = ptr_addr;
	for (voice = 0; voice < YDSXG_EFFECT_VOICES; voice++)
		for (bank = 0; bank < 2; bank++) {
			chip->bank_effect[voice][bank] = (snd_ymfpci_effect_bank_t *)ptr;
			ptr += chip->bank_size_effect;
			ptr_addr += chip->bank_size_effect;
		}
	ptr = (char *)(((unsigned long)ptr + 0x00ff) & ~0x00ff);
	ptr_addr = (ptr_addr + 0x00ff) & ~0x00ff;
	chip->work_base = ptr;
	chip->work_base_addr = ptr_addr;
	
	snd_assert(ptr + chip->work_size == chip->work_ptr.area + chip->work_ptr.bytes, );

	snd_ymfpci_writel(chip, YDSXGR_PLAYCTRLBASE, chip->bank_base_playback_addr);
	snd_ymfpci_writel(chip, YDSXGR_RECCTRLBASE, chip->bank_base_capture_addr);
	snd_ymfpci_writel(chip, YDSXGR_EFFCTRLBASE, chip->bank_base_effect_addr);
	snd_ymfpci_writel(chip, YDSXGR_WORKBASE, chip->work_base_addr);
	snd_ymfpci_writel(chip, YDSXGR_WORKSIZE, chip->work_size >> 2);

	/* S/PDIF output initialization */
	chip->spdif_bits = chip->spdif_pcm_bits = SNDRV_PCM_DEFAULT_CON_SPDIF & 0xffff;
	snd_ymfpci_writew(chip, YDSXGR_SPDIFOUTCTRL, 0);
	snd_ymfpci_writew(chip, YDSXGR_SPDIFOUTSTATUS, chip->spdif_bits);

	/* S/PDIF input initialization */
	snd_ymfpci_writew(chip, YDSXGR_SPDIFINCTRL, 0);

	/* digital mixer setup */
	for (reg = 0x80; reg < 0xc0; reg += 4)
		snd_ymfpci_writel(chip, reg, 0);
	snd_ymfpci_writel(chip, YDSXGR_NATIVEDACOUTVOL, 0x3fff3fff);
	snd_ymfpci_writel(chip, YDSXGR_ZVOUTVOL, 0x3fff3fff);
	snd_ymfpci_writel(chip, YDSXGR_SPDIFOUTVOL, 0x3fff3fff);
	snd_ymfpci_writel(chip, YDSXGR_NATIVEADCINVOL, 0x3fff3fff);
	snd_ymfpci_writel(chip, YDSXGR_NATIVEDACINVOL, 0x3fff3fff);
	snd_ymfpci_writel(chip, YDSXGR_PRIADCLOOPVOL, 0x3fff3fff);
	snd_ymfpci_writel(chip, YDSXGR_LEGACYOUTVOL, 0x3fff3fff);
	
	return 0;
}

static int snd_ymfpci_free(ymfpci_t *chip)
{
	u16 ctrl;

	snd_assert(chip != NULL, return -EINVAL);

	if (chip->res_reg_area) {	/* don't touch busy hardware */
		snd_ymfpci_writel(chip, YDSXGR_NATIVEDACOUTVOL, 0);
		snd_ymfpci_writel(chip, YDSXGR_BUF441OUTVOL, 0);
		snd_ymfpci_writel(chip, YDSXGR_LEGACYOUTVOL, 0);
		snd_ymfpci_writel(chip, YDSXGR_STATUS, ~0);
		snd_ymfpci_disable_dsp(chip);
		snd_ymfpci_writel(chip, YDSXGR_PLAYCTRLBASE, 0);
		snd_ymfpci_writel(chip, YDSXGR_RECCTRLBASE, 0);
		snd_ymfpci_writel(chip, YDSXGR_EFFCTRLBASE, 0);
		snd_ymfpci_writel(chip, YDSXGR_WORKBASE, 0);
		snd_ymfpci_writel(chip, YDSXGR_WORKSIZE, 0);
		ctrl = snd_ymfpci_readw(chip, YDSXGR_GLOBALCTRL);
		snd_ymfpci_writew(chip, YDSXGR_GLOBALCTRL, ctrl & ~0x0007);
	}

	snd_ymfpci_ac3_done(chip);

	/* Set PCI device to D3 state */
#if 0
	/* FIXME: temporarily disabled, otherwise we cannot fire up
	 * the chip again unless reboot.  ACPI bug?
	 */
	pci_set_power_state(chip->pci, 3);
#endif

#ifdef CONFIG_PM
	vfree(chip->saved_regs);
#endif
	if (chip->mpu_res) {
		release_resource(chip->mpu_res);
		kfree_nocheck(chip->mpu_res);
	}
	if (chip->fm_res) {
		release_resource(chip->fm_res);
		kfree_nocheck(chip->fm_res);
	}
#ifdef SUPPORT_JOYSTICK
	if (chip->joystick_res) {
		if (chip->gameport.io)
			gameport_unregister_port(&chip->gameport);
		release_resource(chip->joystick_res);
		kfree_nocheck(chip->joystick_res);
	}
#endif
	if (chip->reg_area_virt)
		iounmap(chip->reg_area_virt);
	if (chip->work_ptr.area)
		snd_dma_free_pages(&chip->work_ptr);
	
	if (chip->irq >= 0)
		free_irq(chip->irq, (void *)chip);
	if (chip->res_reg_area) {
		release_resource(chip->res_reg_area);
		kfree_nocheck(chip->res_reg_area);
	}

	pci_write_config_word(chip->pci, 0x40, chip->old_legacy_ctrl);
	
	pci_disable_device(chip->pci);
	kfree(chip);
	return 0;
}

static int snd_ymfpci_dev_free(snd_device_t *device)
{
	ymfpci_t *chip = device->device_data;
	return snd_ymfpci_free(chip);
}

#ifdef CONFIG_PM
static int saved_regs_index[] = {
	/* spdif */
	YDSXGR_SPDIFOUTCTRL,
	YDSXGR_SPDIFOUTSTATUS,
	YDSXGR_SPDIFINCTRL,
	/* volumes */
	YDSXGR_PRIADCLOOPVOL,
	YDSXGR_NATIVEDACINVOL,
	YDSXGR_NATIVEDACOUTVOL,
	// YDSXGR_BUF441OUTVOL,
	YDSXGR_NATIVEADCINVOL,
	YDSXGR_SPDIFLOOPVOL,
	YDSXGR_SPDIFOUTVOL,
	YDSXGR_ZVOUTVOL,
	YDSXGR_LEGACYOUTVOL,
	/* address bases */
	YDSXGR_PLAYCTRLBASE,
	YDSXGR_RECCTRLBASE,
	YDSXGR_EFFCTRLBASE,
	YDSXGR_WORKBASE,
	/* capture set up */
	YDSXGR_MAPOFREC,
	YDSXGR_RECFORMAT,
	YDSXGR_RECSLOTSR,
	YDSXGR_ADCFORMAT,
	YDSXGR_ADCSLOTSR,
};
#define YDSXGR_NUM_SAVED_REGS	ARRAY_SIZE(saved_regs_index)

static int snd_ymfpci_suspend(snd_card_t *card, unsigned int state)
{
	ymfpci_t *chip = card->pm_private_data;
	unsigned int i;
	
	snd_pcm_suspend_all(chip->pcm);
	snd_pcm_suspend_all(chip->pcm2);
	snd_pcm_suspend_all(chip->pcm_spdif);
	snd_pcm_suspend_all(chip->pcm_4ch);
	snd_ac97_suspend(chip->ac97);
	for (i = 0; i < YDSXGR_NUM_SAVED_REGS; i++)
		chip->saved_regs[i] = snd_ymfpci_readl(chip, saved_regs_index[i]);
	chip->saved_ydsxgr_mode = snd_ymfpci_readl(chip, YDSXGR_MODE);
	snd_ymfpci_writel(chip, YDSXGR_NATIVEDACOUTVOL, 0);
	snd_ymfpci_disable_dsp(chip);
	pci_disable_device(chip->pci);
	return 0;
}

static int snd_ymfpci_resume(snd_card_t *card, unsigned int state)
{
	ymfpci_t *chip = card->pm_private_data;
	unsigned int i;

	pci_enable_device(chip->pci);
	pci_set_master(chip->pci);
	snd_ymfpci_aclink_reset(chip->pci);
	snd_ymfpci_codec_ready(chip, 0);
	snd_ymfpci_download_image(chip);
	udelay(100);

	for (i = 0; i < YDSXGR_NUM_SAVED_REGS; i++)
		snd_ymfpci_writel(chip, saved_regs_index[i], chip->saved_regs[i]);

	snd_ac97_resume(chip->ac97);

	/* start hw again */
	if (chip->start_count > 0) {
		spin_lock_irq(&chip->reg_lock);
		snd_ymfpci_writel(chip, YDSXGR_MODE, chip->saved_ydsxgr_mode);
		chip->active_bank = snd_ymfpci_readl(chip, YDSXGR_CTRLSELECT);
		spin_unlock_irq(&chip->reg_lock);
	}
	return 0;
}
#endif /* CONFIG_PM */

int __devinit snd_ymfpci_create(snd_card_t * card,
				struct pci_dev * pci,
				unsigned short old_legacy_ctrl,
				ymfpci_t ** rchip)
{
	ymfpci_t *chip;
	int err;
	static snd_device_ops_t ops = {
		.dev_free =	snd_ymfpci_dev_free,
	};
	
	*rchip = NULL;

	/* enable PCI device */
	if ((err = pci_enable_device(pci)) < 0)
		return err;

	chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
	if (chip == NULL) {
		pci_disable_device(pci);
		return -ENOMEM;
	}
	chip->old_legacy_ctrl = old_legacy_ctrl;
	spin_lock_init(&chip->reg_lock);
	spin_lock_init(&chip->voice_lock);
	init_waitqueue_head(&chip->interrupt_sleep);
	atomic_set(&chip->interrupt_sleep_count, 0);
	chip->card = card;
	chip->pci = pci;
	chip->irq = -1;
	chip->device_id = pci->device;
	pci_read_config_byte(pci, PCI_REVISION_ID, (u8 *)&chip->rev);
	chip->reg_area_phys = pci_resource_start(pci, 0);
	chip->reg_area_virt = ioremap_nocache(chip->reg_area_phys, 0x8000);
	pci_set_master(pci);

	if ((chip->res_reg_area = request_mem_region(chip->reg_area_phys, 0x8000, "YMFPCI")) == NULL) {
		snd_printk("unable to grab memory region 0x%lx-0x%lx\n", chip->reg_area_phys, chip->reg_area_phys + 0x8000 - 1);
		snd_ymfpci_free(chip);
		return -EBUSY;
	}
	if (request_irq(pci->irq, snd_ymfpci_interrupt, SA_INTERRUPT|SA_SHIRQ, "YMFPCI", (void *) chip)) {
		snd_printk("unable to grab IRQ %d\n", pci->irq);
		snd_ymfpci_free(chip);
		return -EBUSY;
	}
	chip->irq = pci->irq;

	snd_ymfpci_aclink_reset(pci);
	if (snd_ymfpci_codec_ready(chip, 0) < 0) {
		snd_ymfpci_free(chip);
		return -EIO;
	}

	snd_ymfpci_download_image(chip);

	udelay(100); /* seems we need a delay after downloading image.. */

	if (snd_ymfpci_memalloc(chip) < 0) {
		snd_ymfpci_free(chip);
		return -EIO;
	}

	if ((err = snd_ymfpci_ac3_init(chip)) < 0) {
		snd_ymfpci_free(chip);
		return err;
	}

#ifdef CONFIG_PM
	chip->saved_regs = vmalloc(YDSXGR_NUM_SAVED_REGS * sizeof(u32));
	if (chip->saved_regs == NULL) {
		snd_ymfpci_free(chip);
		return -ENOMEM;
	}
	snd_card_set_pm_callback(card, snd_ymfpci_suspend, snd_ymfpci_resume, chip);
#endif

	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
		snd_ymfpci_free(chip);
		return err;
	}

	snd_ymfpci_proc_init(card, chip);

	snd_card_set_dev(card, &pci->dev);

	*rchip = chip;
	return 0;
}