emufx.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

			kfree(icode->gpr_map);
		kfree(icode);
	}
	return err;
}


/*
 * initial DSP configuration for Emu10k1
 */

/* when volume = max, then copy only to avoid volume modification */
/* with iMAC0 (negative values) */
static void __devinit _volume(emu10k1_fx8010_code_t *icode, u32 *ptr, u32 dst, u32 src, u32 vol)
{
	OP(icode, ptr, iMAC0, dst, C_00000000, src, vol);
	OP(icode, ptr, iANDXOR, C_00000000, vol, C_ffffffff, C_7fffffff);
	OP(icode, ptr, iSKIP, GPR_COND, GPR_COND, CC_REG_NONZERO, C_00000001);
	OP(icode, ptr, iACC3, dst, src, C_00000000, C_00000000);
}
static void __devinit _volume_add(emu10k1_fx8010_code_t *icode, u32 *ptr, u32 dst, u32 src, u32 vol)
{
	OP(icode, ptr, iANDXOR, C_00000000, vol, C_ffffffff, C_7fffffff);
	OP(icode, ptr, iSKIP, GPR_COND, GPR_COND, CC_REG_NONZERO, C_00000002);
	OP(icode, ptr, iMACINT0, dst, dst, src, C_00000001);
	OP(icode, ptr, iSKIP, C_00000000, C_7fffffff, C_7fffffff, C_00000001);
	OP(icode, ptr, iMAC0, dst, dst, src, vol);
}
static void __devinit _volume_out(emu10k1_fx8010_code_t *icode, u32 *ptr, u32 dst, u32 src, u32 vol)
{
	OP(icode, ptr, iANDXOR, C_00000000, vol, C_ffffffff, C_7fffffff);
	OP(icode, ptr, iSKIP, GPR_COND, GPR_COND, CC_REG_NONZERO, C_00000002);
	OP(icode, ptr, iACC3, dst, src, C_00000000, C_00000000);
	OP(icode, ptr, iSKIP, C_00000000, C_7fffffff, C_7fffffff, C_00000001);
	OP(icode, ptr, iMAC0, dst, C_00000000, src, vol);
}

#define VOLUME(icode, ptr, dst, src, vol) \
		_volume(icode, ptr, GPR(dst), GPR(src), GPR(vol))
#define VOLUME_IN(icode, ptr, dst, src, vol) \
		_volume(icode, ptr, GPR(dst), EXTIN(src), GPR(vol))
#define VOLUME_ADD(icode, ptr, dst, src, vol) \
		_volume_add(icode, ptr, GPR(dst), GPR(src), GPR(vol))
#define VOLUME_ADDIN(icode, ptr, dst, src, vol) \
		_volume_add(icode, ptr, GPR(dst), EXTIN(src), GPR(vol))
#define VOLUME_OUT(icode, ptr, dst, src, vol) \
		_volume_out(icode, ptr, EXTOUT(dst), GPR(src), GPR(vol))
#define _SWITCH(icode, ptr, dst, src, sw) \
	OP((icode), ptr, iMACINT0, dst, C_00000000, src, sw);
#define SWITCH(icode, ptr, dst, src, sw) \
		_SWITCH(icode, ptr, GPR(dst), GPR(src), GPR(sw))
#define SWITCH_IN(icode, ptr, dst, src, sw) \
		_SWITCH(icode, ptr, GPR(dst), EXTIN(src), GPR(sw))
#define _SWITCH_NEG(icode, ptr, dst, src) \
	OP((icode), ptr, iANDXOR, dst, src, C_00000001, C_00000001);
#define SWITCH_NEG(icode, ptr, dst, src) \
		_SWITCH_NEG(icode, ptr, GPR(dst), GPR(src))


static int __devinit _snd_emu10k1_init_efx(emu10k1_t *emu)
{
	int err, i, z, gpr, tmp, playback, capture;
	u32 ptr;
	emu10k1_fx8010_code_t *icode;
	emu10k1_fx8010_pcm_t *ipcm = NULL;
	emu10k1_fx8010_control_gpr_t *controls = NULL, *ctl;
	mm_segment_t seg;

	spin_lock_init(&emu->fx8010.irq_lock);
	INIT_LIST_HEAD(&emu->fx8010.gpr_ctl);

	if ((icode = kcalloc(1, sizeof(*icode), GFP_KERNEL)) == NULL)
		return -ENOMEM;
	if ((icode->gpr_map = kcalloc(256 + 160 + 160 + 2 * 512, sizeof(u_int32_t), GFP_KERNEL)) == NULL ||
            (controls = kcalloc(SND_EMU10K1_GPR_CONTROLS, sizeof(emu10k1_fx8010_control_gpr_t), GFP_KERNEL)) == NULL ||
	    (ipcm = kcalloc(1, sizeof(*ipcm), GFP_KERNEL)) == NULL) {
		err = -ENOMEM;
		goto __err;
	}

	icode->tram_data_map = icode->gpr_map + 256;
	icode->tram_addr_map = icode->tram_data_map + 160;
	icode->code = icode->tram_addr_map + 160;
	
	/* clear free GPRs */
	for (i = 0; i < 256; i++)
		set_bit(i, icode->gpr_valid);

	/* clear TRAM data & address lines */
	for (i = 0; i < 160; i++)
		set_bit(i, icode->tram_valid);

	strcpy(icode->name, "SB Live! FX8010 code for ALSA v1.2 by Jaroslav Kysela");
	ptr = 0; i = 0;
	/* we have 10 inputs */
	playback = SND_EMU10K1_INPUTS;
	/* we have 6 playback channels and tone control doubles */
	capture = playback + (SND_EMU10K1_PLAYBACK_CHANNELS * 2);
	gpr = capture + SND_EMU10K1_CAPTURE_CHANNELS;
	tmp = 0x88;	/* we need 4 temporary GPR */
	/* from 0x8c to 0xff is the area for tone control */

	/* stop FX processor */
	snd_emu10k1_ptr_write(emu, DBG, 0, (emu->fx8010.dbg = 0) | EMU10K1_DBG_SINGLE_STEP);

	/*
	 *  Process FX Buses
	 */
	OP(icode, &ptr, iMACINT0, GPR(0), C_00000000, FXBUS(FXBUS_PCM_LEFT), C_00000004);
	OP(icode, &ptr, iMACINT0, GPR(1), C_00000000, FXBUS(FXBUS_PCM_RIGHT), C_00000004);
	OP(icode, &ptr, iMACINT0, GPR(2), C_00000000, FXBUS(FXBUS_MIDI_LEFT), C_00000004);
	OP(icode, &ptr, iMACINT0, GPR(3), C_00000000, FXBUS(FXBUS_MIDI_RIGHT), C_00000004);
	OP(icode, &ptr, iMACINT0, GPR(4), C_00000000, FXBUS(FXBUS_PCM_LEFT_REAR), C_00000004);
	OP(icode, &ptr, iMACINT0, GPR(5), C_00000000, FXBUS(FXBUS_PCM_RIGHT_REAR), C_00000004);
	OP(icode, &ptr, iMACINT0, GPR(6), C_00000000, FXBUS(FXBUS_PCM_CENTER), C_00000004);
	OP(icode, &ptr, iMACINT0, GPR(7), C_00000000, FXBUS(FXBUS_PCM_LFE), C_00000004);
	OP(icode, &ptr, iMACINT0, GPR(8), C_00000000, C_00000000, C_00000000);	/* S/PDIF left */
	OP(icode, &ptr, iMACINT0, GPR(9), C_00000000, C_00000000, C_00000000);	/* S/PDIF right */

	/* Raw S/PDIF PCM */
	ipcm->substream = 0;
	ipcm->channels = 2;
	ipcm->tram_start = 0;
	ipcm->buffer_size = (64 * 1024) / 2;
	ipcm->gpr_size = gpr++;
	ipcm->gpr_ptr = gpr++;
	ipcm->gpr_count = gpr++;
	ipcm->gpr_tmpcount = gpr++;
	ipcm->gpr_trigger = gpr++;
	ipcm->gpr_running = gpr++;
	ipcm->etram[0] = 0;
	ipcm->etram[1] = 1;

	icode->gpr_map[gpr + 0] = 0xfffff000;
	icode->gpr_map[gpr + 1] = 0xffff0000;
	icode->gpr_map[gpr + 2] = 0x70000000;
	icode->gpr_map[gpr + 3] = 0x00000007;
	icode->gpr_map[gpr + 4] = 0x001f << 11;
	icode->gpr_map[gpr + 5] = 0x001c << 11;
	icode->gpr_map[gpr + 6] = (0x22  - 0x01) - 1;	/* skip at 01 to 22 */
	icode->gpr_map[gpr + 7] = (0x22  - 0x06) - 1;	/* skip at 06 to 22 */
	icode->gpr_map[gpr + 8] = 0x2000000 + (2<<11);
	icode->gpr_map[gpr + 9] = 0x4000000 + (2<<11);
	icode->gpr_map[gpr + 10] = 1<<11;
	icode->gpr_map[gpr + 11] = (0x24 - 0x0a) - 1;	/* skip at 0a to 24 */
	icode->gpr_map[gpr + 12] = 0;

	/* if the trigger flag is not set, skip */
	/* 00: */ OP(icode, &ptr, iMAC0, C_00000000, GPR(ipcm->gpr_trigger), C_00000000, C_00000000);
	/* 01: */ OP(icode, &ptr, iSKIP, GPR_COND, GPR_COND, CC_REG_ZERO, GPR(gpr + 6));
	/* if the running flag is set, we're running */
	/* 02: */ OP(icode, &ptr, iMAC0, C_00000000, GPR(ipcm->gpr_running), C_00000000, C_00000000);
	/* 03: */ OP(icode, &ptr, iSKIP, GPR_COND, GPR_COND, CC_REG_NONZERO, C_00000004);
	/* wait until ((GPR_DBAC>>11) & 0x1f) == 0x1c) */
	/* 04: */ OP(icode, &ptr, iANDXOR, GPR(tmp + 0), GPR_DBAC, GPR(gpr + 4), C_00000000);
	/* 05: */ OP(icode, &ptr, iMACINT0, C_00000000, GPR(tmp + 0), C_ffffffff, GPR(gpr + 5));
	/* 06: */ OP(icode, &ptr, iSKIP, GPR_COND, GPR_COND, CC_REG_NONZERO, GPR(gpr + 7));
	/* 07: */ OP(icode, &ptr, iACC3, GPR(gpr + 12), C_00000010, C_00000001, C_00000000);

	/* 08: */ OP(icode, &ptr, iANDXOR, GPR(ipcm->gpr_running), GPR(ipcm->gpr_running), C_00000000, C_00000001);
	/* 09: */ OP(icode, &ptr, iACC3, GPR(gpr + 12), GPR(gpr + 12), C_ffffffff, C_00000000);
	/* 0a: */ OP(icode, &ptr, iSKIP, GPR_COND, GPR_COND, CC_REG_NONZERO, GPR(gpr + 11));
	/* 0b: */ OP(icode, &ptr, iACC3, GPR(gpr + 12), C_00000001, C_00000000, C_00000000);

	/* 0c: */ OP(icode, &ptr, iANDXOR, GPR(tmp + 0), ETRAM_DATA(ipcm->etram[0]), GPR(gpr + 0), C_00000000);
	/* 0d: */ OP(icode, &ptr, iLOG, GPR(tmp + 0), GPR(tmp + 0), GPR(gpr + 3), C_00000000);
	/* 0e: */ OP(icode, &ptr, iANDXOR, GPR(8), GPR(tmp + 0), GPR(gpr + 1), GPR(gpr + 2));
	/* 0f: */ OP(icode, &ptr, iSKIP, C_00000000, GPR_COND, CC_REG_MINUS, C_00000001);
	/* 10: */ OP(icode, &ptr, iANDXOR, GPR(8), GPR(8), GPR(gpr + 1), GPR(gpr + 2));

	/* 11: */ OP(icode, &ptr, iANDXOR, GPR(tmp + 0), ETRAM_DATA(ipcm->etram[1]), GPR(gpr + 0), C_00000000);
	/* 12: */ OP(icode, &ptr, iLOG, GPR(tmp + 0), GPR(tmp + 0), GPR(gpr + 3), C_00000000);
	/* 13: */ OP(icode, &ptr, iANDXOR, GPR(9), GPR(tmp + 0), GPR(gpr + 1), GPR(gpr + 2));
	/* 14: */ OP(icode, &ptr, iSKIP, C_00000000, GPR_COND, CC_REG_MINUS, C_00000001);
	/* 15: */ OP(icode, &ptr, iANDXOR, GPR(9), GPR(9), GPR(gpr + 1), GPR(gpr + 2));

	/* 16: */ OP(icode, &ptr, iACC3, GPR(tmp + 0), GPR(ipcm->gpr_ptr), C_00000001, C_00000000);
	/* 17: */ OP(icode, &ptr, iMACINT0, C_00000000, GPR(tmp + 0), C_ffffffff, GPR(ipcm->gpr_size));
	/* 18: */ OP(icode, &ptr, iSKIP, GPR_COND, GPR_COND, CC_REG_MINUS, C_00000001);
	/* 19: */ OP(icode, &ptr, iACC3, GPR(tmp + 0), C_00000000, C_00000000, C_00000000);
	/* 1a: */ OP(icode, &ptr, iACC3, GPR(ipcm->gpr_ptr), GPR(tmp + 0), C_00000000, C_00000000);
	
	/* 1b: */ OP(icode, &ptr, iACC3, GPR(ipcm->gpr_tmpcount), GPR(ipcm->gpr_tmpcount), C_ffffffff, C_00000000);
	/* 1c: */ OP(icode, &ptr, iSKIP, GPR_COND, GPR_COND, CC_REG_NONZERO, C_00000002);
	/* 1d: */ OP(icode, &ptr, iACC3, GPR(ipcm->gpr_tmpcount), GPR(ipcm->gpr_count), C_00000000, C_00000000);
	/* 1e: */ OP(icode, &ptr, iACC3, GPR_IRQ, C_80000000, C_00000000, C_00000000);
	/* 1f: */ OP(icode, &ptr, iANDXOR, GPR(ipcm->gpr_running), GPR(ipcm->gpr_running), C_00000001, C_00010000);

	/* 20: */ OP(icode, &ptr, iANDXOR, GPR(ipcm->gpr_running), GPR(ipcm->gpr_running), C_00010000, C_00000001);
	/* 21: */ OP(icode, &ptr, iSKIP, C_00000000, C_7fffffff, C_7fffffff, C_00000002);

	/* 22: */ OP(icode, &ptr, iMACINT1, ETRAM_ADDR(ipcm->etram[0]), GPR(gpr + 8), GPR_DBAC, C_ffffffff);
	/* 23: */ OP(icode, &ptr, iMACINT1, ETRAM_ADDR(ipcm->etram[1]), GPR(gpr + 9), GPR_DBAC, C_ffffffff);

	/* 24: */
	gpr += 13;

	/* Wave Playback Volume */
	for (z = 0; z < 2; z++)
		VOLUME(icode, &ptr, playback + z, z, gpr + z);
	snd_emu10k1_init_stereo_control(controls + i++, "Wave Playback Volume", gpr, 100);
	gpr += 2;

	/* Wave Surround Playback Volume */
	for (z = 0; z < 2; z++)
		VOLUME(icode, &ptr, playback + 2 + z, z, gpr + z);
	snd_emu10k1_init_stereo_control(controls + i++, "Wave Surround Playback Volume", gpr, 0);
	gpr += 2;
	
	/* Wave Center/LFE Playback Volume */
	OP(icode, &ptr, iACC3, GPR(tmp + 0), FXBUS(FXBUS_PCM_LEFT), FXBUS(FXBUS_PCM_RIGHT), C_00000000);
	OP(icode, &ptr, iMACINT0, GPR(tmp + 0), C_00000000, GPR(tmp + 0), C_00000002);
	VOLUME(icode, &ptr, playback + 4, tmp + 0, gpr);
	snd_emu10k1_init_mono_control(controls + i++, "Wave Center Playback Volume", gpr++, 0);
	VOLUME(icode, &ptr, playback + 5, tmp + 0, gpr);
	snd_emu10k1_init_mono_control(controls + i++, "Wave LFE Playback Volume", gpr++, 0);

	/* Wave Capture Volume + Switch */
	for (z = 0; z < 2; z++) {
		SWITCH(icode, &ptr, tmp + 0, z, gpr + 2 + z);
		VOLUME(icode, &ptr, capture + z, tmp + 0, gpr + z);
	}
	snd_emu10k1_init_stereo_control(controls + i++, "Wave Capture Volume", gpr, 0);
	snd_emu10k1_init_stereo_onoff_control(controls + i++, "Wave Capture Switch", gpr + 2, 0);
	gpr += 4;

	/* Music Playback Volume */
	for (z = 0; z < 2; z++)
		VOLUME_ADD(icode, &ptr, playback + z, 2 + z, gpr + z);
	snd_emu10k1_init_stereo_control(controls + i++, "Music Playback Volume", gpr, 100);
	gpr += 2;

	/* Music Capture Volume + Switch */
	for (z = 0; z < 2; z++) {
		SWITCH(icode, &ptr, tmp + 0, 2 + z, gpr + 2 + z);
		VOLUME_ADD(icode, &ptr, capture + z, tmp + 0, gpr + z);
	}
	snd_emu10k1_init_stereo_control(controls + i++, "Music Capture Volume", gpr, 0);
	snd_emu10k1_init_stereo_onoff_control(controls + i++, "Music Capture Switch", gpr + 2, 0);
	gpr += 4;

	/* Surround Digital Playback Volume (renamed later without Digital) */
	for (z = 0; z < 2; z++)
		VOLUME_ADD(icode, &ptr, playback + 2 + z, 4 + z, gpr + z);
	snd_emu10k1_init_stereo_control(controls + i++, "Surround Digital Playback Volume", gpr, 100);
	gpr += 2;

	/* Surround Capture Volume + Switch */
	for (z = 0; z < 2; z++) {
		SWITCH(icode, &ptr, tmp + 0, 4 + z, gpr + 2 + z);
		VOLUME_ADD(icode, &ptr, capture + z, tmp + 0, gpr + z);
	}
	snd_emu10k1_init_stereo_control(controls + i++, "Surround Capture Volume", gpr, 0);
	snd_emu10k1_init_stereo_onoff_control(controls + i++, "Surround Capture Switch", gpr + 2, 0);
	gpr += 4;

	/* Center Playback Volume (renamed later without Digital) */
	VOLUME_ADD(icode, &ptr, playback + 4, 6, gpr);
	snd_emu10k1_init_mono_control(controls + i++, "Center Digital Playback Volume", gpr++, 100);

	/* LFE Playback Volume + Switch (renamed later without Digital) */
	VOLUME_ADD(icode, &ptr, playback + 5, 7, gpr);
	snd_emu10k1_init_mono_control(controls + i++, "LFE Digital Playback Volume", gpr++, 100);

	/*
	 *  Process inputs
	 */

	if (emu->fx8010.extin_mask & ((1<<EXTIN_AC97_L)|(1<<EXTIN_AC97_R))) {
		/* AC'97 Playback Volume */
		VOLUME_ADDIN(icode, &ptr, playback + 0, EXTIN_AC97_L, gpr); gpr++;
		VOLUME_ADDIN(icode, &ptr, playback + 1, EXTIN_AC97_R, gpr); gpr++;
		snd_emu10k1_init_stereo_control(controls + i++, "AC97 Playback Volume", gpr-2, 0);
		/* AC'97 Capture Volume */
		VOLUME_ADDIN(icode, &ptr, capture + 0, EXTIN_AC97_L, gpr); gpr++;
		VOLUME_ADDIN(icode, &ptr, capture + 1, EXTIN_AC97_R, gpr); gpr++;
		snd_emu10k1_init_stereo_control(controls + i++, "AC97 Capture Volume", gpr-2, 100);
	}
	
	if (emu->fx8010.extin_mask & ((1<<EXTIN_SPDIF_CD_L)|(1<<EXTIN_SPDIF_CD_R))) {
		/* IEC958 TTL Playback Volume */
		for (z = 0; z < 2; z++)
			VOLUME_ADDIN(icode, &ptr, playback + z, EXTIN_SPDIF_CD_L + z, gpr + z);
		snd_emu10k1_init_stereo_control(controls + i++, "IEC958 TTL Playback Volume", gpr, 0);
		gpr += 2;
	
		/* IEC958 TTL Capture Volume + Switch */
		for (z = 0; z < 2; z++) {
			SWITCH_IN(icode, &ptr, tmp + 0, EXTIN_SPDIF_CD_L + z, gpr + 2 + z);
			VOLUME_ADD(icode, &ptr, capture + z, tmp + 0, gpr + z);
		}
		snd_emu10k1_init_stereo_control(controls + i++, "IEC958 TTL Capture Volume", gpr, 0);
		snd_emu10k1_init_stereo_onoff_control(controls + i++, "IEC958 TTL Capture Switch", gpr + 2, 0);
		gpr += 4;
	}
	
	if (emu->fx8010.extin_mask & ((1<<EXTIN_ZOOM_L)|(1<<EXTIN_ZOOM_R))) {
		/* Zoom Video Playback Volume */
		for (z = 0; z < 2; z++)
			VOLUME_ADDIN(icode, &ptr, playback + z, EXTIN_ZOOM_L + z, gpr + z);
		snd_emu10k1_init_stereo_control(controls + i++, "Zoom Video Playback Volume", gpr, 0);
		gpr += 2;
	
		/* Zoom Video Capture Volume + Switch */
		for (z = 0; z < 2; z++) {
			SWITCH_IN(icode, &ptr, tmp + 0, EXTIN_ZOOM_L + z, gpr + 2 + z);
			VOLUME_ADD(icode, &ptr, capture + z, tmp + 0, gpr + z);
		}
		snd_emu10k1_init_stereo_control(controls + i++, "Zoom Video Capture Volume", gpr, 0);
		snd_emu10k1_init_stereo_onoff_control(controls + i++, "Zoom Video Capture Switch", gpr + 2, 0);
		gpr += 4;
	}
	
	if (emu->fx8010.extin_mask & ((1<<EXTIN_TOSLINK_L)|(1<<EXTIN_TOSLINK_R))) {
		/* IEC958 Optical Playback Volume */
		for (z = 0; z < 2; z++)
			VOLUME_ADDIN(icode, &ptr, playback + z, EXTIN_TOSLINK_L + z, gpr + z);
		snd_emu10k1_init_stereo_control(controls + i++, "IEC958 LiveDrive Playback Volume", gpr, 0);
		gpr += 2;
	
		/* IEC958 Optical Capture Volume */
		for (z = 0; z < 2; z++) {
			SWITCH_IN(icode, &ptr, tmp + 0, EXTIN_TOSLINK_L + z, gpr + 2 + z);
			VOLUME_ADD(icode, &ptr, capture + z, tmp + 0, gpr + z);
		}
		snd_emu10k1_init_stereo_control(controls + i++, "IEC958 LiveDrive Capture Volume", gpr, 0);
		snd_emu10k1_init_stereo_onoff_control(controls + i++, "IEC958 LiveDrive Capture Switch", gpr + 2, 0);
		gpr += 4;
	}
	
	if (emu->fx8010.extin_mask & ((1<<EXTIN_LINE1_L)|(1<<EXTIN_LINE1_R))) {
		/* Line LiveDrive Playback Volume */
		for (z = 0; z < 2; z++)
			VOLUME_ADDIN(icode, &ptr, playback + z, EXTIN_LINE1_L + z, gpr + z);
		snd_emu10k1_init_stereo_control(controls + i++, "Line LiveDrive Playback Volume", gpr, 0);
		gpr += 2;
	
		/* Line LiveDrive Capture Volume + Switch */
		for (z = 0; z < 2; z++) {
			SWITCH_IN(icode, &ptr, tmp + 0, EXTIN_LINE1_L + z, gpr + 2 + z);
			VOLUME_ADD(icode, &ptr, capture + z, tmp + 0, gpr + z);
		}
		snd_emu10k1_init_stereo_control(controls + i++, "Line LiveDrive Capture Volume", gpr, 0);
		snd_emu10k1_init_stereo_onoff_control(controls + i++, "Line LiveDrive