diff -urN linux-2.4.18-pre4/drivers/sound/emu10k1/audio.c linux/drivers/sound/emu10k1/audio.c
--- linux-2.4.18-pre4/drivers/sound/emu10k1/audio.c	Tue Jan 15 19:00:53 2002
+++ linux/drivers/sound/emu10k1/audio.c	Fri Jan 18 17:36:13 2002
@@ -983,11 +983,11 @@
 	unsigned long pgoff;
 	int rd, wr;
 
-	DPF(4, "emu10k1_mm_nopage()\n");
-	DPD(4, "addr: %#lx\n", address);
+	DPF(3, "emu10k1_mm_nopage()\n");
+	DPD(3, "addr: %#lx\n", address);
 
 	if (address > vma->vm_end) {
-		DPF(2, "EXIT, returning NOPAGE_SIGBUS\n");
+		DPF(1, "EXIT, returning NOPAGE_SIGBUS\n");
 		return NOPAGE_SIGBUS; /* Disallow mremap */
 	}
 
@@ -1009,14 +1009,14 @@
 			pgoff -= woinst->buffer.pages;
 			dmapage = virt_to_page ((u8 *) wiinst->buffer.addr + pgoff * PAGE_SIZE);
 		} else
-			dmapage = virt_to_page (woinst->buffer.mem[0].addr[pgoff]);
+			dmapage = virt_to_page (woinst->voice[0].mem.addr[pgoff]);
 	} else {
 		dmapage = virt_to_page ((u8 *) wiinst->buffer.addr + pgoff * PAGE_SIZE);
 	}
 
 	get_page (dmapage);
 
-	DPD(4, "page: %#lx\n", dmapage);
+	DPD(3, "page: %#lx\n", (unsigned long) dmapage);
 	return dmapage;
 }
 
@@ -1083,8 +1083,8 @@
 	n_pages = ((vma->vm_end - vma->vm_start) + PAGE_SIZE - 1) >> PAGE_SHIFT;
 	pgoffset = vma->vm_pgoff;
 
-	DPD(3, "vma_start: %#lx, vma_end: %#lx, vma_offset: %d\n", vma->vm_start, vma->vm_end, pgoffset);
-	DPD(3, "n_pages: %d, max_pages: %d\n", n_pages, max_pages);
+	DPD(2, "vma_start: %#lx, vma_end: %#lx, vma_offset: %ld\n", vma->vm_start, vma->vm_end, pgoffset);
+	DPD(2, "n_pages: %ld, max_pages: %ld\n", n_pages, max_pages);
 
 	if (pgoffset + n_pages > max_pages)
 		return -EINVAL;
@@ -1092,7 +1092,6 @@
 	vma->vm_flags |= VM_RESERVED;
 	vma->vm_ops = &emu10k1_mm_ops;
 	vma->vm_private_data = wave_dev;
-
 	return 0;
 }
 
@@ -1211,7 +1210,7 @@
 		woinst->num_voices = 1;
 		for (i = 0; i < WAVEOUT_MAXVOICES; i++) {
 			woinst->voice[i].usage = VOICE_USAGE_FREE;
-			woinst->buffer.mem[i].emupageindex = -1;
+			woinst->voice[i].mem.emupageindex = -1;
 		}
 
 		init_waitqueue_head(&woinst->wait_queue);
@@ -1330,23 +1329,13 @@
 	if (file->f_mode & FMODE_READ) {
 		spin_lock_irqsave(&wiinst->lock, flags);
 
-		if (wiinst->state == WAVE_STATE_CLOSED) {
-			calculate_ifrag(wiinst);
-			if (emu10k1_wavein_open(wave_dev) < 0) {
-				spin_unlock_irqrestore(&wiinst->lock, flags);
-				return (mask |= POLLERR);
-			}
-		}
+		if (wiinst->state & WAVE_STATE_OPEN) {
+			emu10k1_wavein_update(wave_dev->card, wiinst);
+			emu10k1_wavein_getxfersize(wiinst, &bytestocopy);
 
-		if (!(wiinst->state & WAVE_STATE_STARTED)) {
-			wave_dev->enablebits |= PCM_ENABLE_INPUT;
-			emu10k1_wavein_start(wave_dev);
+			if (bytestocopy >= wiinst->buffer.fragment_size)
+				mask |= POLLIN | POLLRDNORM;
 		}
-		emu10k1_wavein_update(wave_dev->card, wiinst);
-		emu10k1_wavein_getxfersize(wiinst, &bytestocopy);
-
-		if (bytestocopy >= wiinst->buffer.fragment_size)
-			mask |= POLLIN | POLLRDNORM;
 
 		spin_unlock_irqrestore(&wiinst->lock, flags);
 	}
diff -urN linux-2.4.18-pre4/drivers/sound/emu10k1/audio.h linux/drivers/sound/emu10k1/audio.h
--- linux-2.4.18-pre4/drivers/sound/emu10k1/audio.h	Tue Jan 15 19:00:53 2002
+++ linux/drivers/sound/emu10k1/audio.h	Fri Jan 18 17:33:30 2002
@@ -33,7 +33,7 @@
 #ifndef _AUDIO_H
 #define _AUDIO_H
 
-#define MINFRAGS	2	/* _don't_ got bellow 2 */
+#define MINFRAGS	3	/* _don't_ go bellow 3 */
 
 struct emu10k1_wavedevice
 {
diff -urN linux-2.4.18-pre4/drivers/sound/emu10k1/cardwi.c linux/drivers/sound/emu10k1/cardwi.c
--- linux-2.4.18-pre4/drivers/sound/emu10k1/cardwi.c	Tue Jan 15 19:00:53 2002
+++ linux/drivers/sound/emu10k1/cardwi.c	Fri Jan 18 17:33:30 2002
@@ -96,6 +96,7 @@
 	wave_fmt->bytesperchannel = wave_fmt->bitsperchannel >> 3;
 	wave_fmt->bytespersample = wave_fmt->channels * wave_fmt->bytesperchannel;
 	wave_fmt->bytespersec = wave_fmt->bytespersample * wave_fmt->samplingrate;
+	wave_fmt->bytespervoicesample = wave_fmt->bytespersample;
 }
 
 static int alloc_buffer(struct emu10k1_card *card, struct wavein_buffer *buffer)
diff -urN linux-2.4.18-pre4/drivers/sound/emu10k1/cardwo.c linux/drivers/sound/emu10k1/cardwo.c
--- linux-2.4.18-pre4/drivers/sound/emu10k1/cardwo.c	Tue Jan 15 19:00:53 2002
+++ linux/drivers/sound/emu10k1/cardwo.c	Fri Jan 18 17:33:30 2002
@@ -108,95 +108,20 @@
 	}
 
 	wave_fmt->bytesperchannel = wave_fmt->bitsperchannel >> 3;
+	wave_fmt->bytespersample = wave_fmt->channels * wave_fmt->bytesperchannel;
+	wave_fmt->bytespersec = wave_fmt->bytespersample * wave_fmt->samplingrate;
 
 	if (wave_fmt->channels == 2)
 		wave_fmt->bytespervoicesample = wave_fmt->channels * wave_fmt->bytesperchannel;
 	else
 		wave_fmt->bytespervoicesample = wave_fmt->bytesperchannel;
-
-	wave_fmt->bytespersample = wave_fmt->channels * wave_fmt->bytesperchannel;
-	wave_fmt->bytespersec = wave_fmt->bytespersample * wave_fmt->samplingrate;
-}
-
-/**
- * alloc_buffer -
- *
- * allocates the memory buffer for a voice. Two page tables are kept for each buffer.
- * One (dma_handle) keeps track of the host memory pages used and the other (virtualpagetable)
- * is passed to the device so that it can do DMA to host memory. 
- *
- */
-static int alloc_buffer(struct emu10k1_card *card, struct waveout_buffer *buffer, unsigned int voicenum)
-{
-	u32 pageindex, pagecount;
-	unsigned long busaddx;
-	int i;
-
-	DPD(2, "requested pages is: %d\n", buffer->pages);
-
-	if ((buffer->mem[voicenum].emupageindex =
-	 emu10k1_addxmgr_alloc(buffer->pages * PAGE_SIZE, card)) < 0)
-		return -1;
-
-	/* Fill in virtual memory table */
-	for (pagecount = 0; pagecount < buffer->pages; pagecount++) {
-		if ((buffer->mem[voicenum].addr[pagecount] =
-		 pci_alloc_consistent(card->pci_dev, PAGE_SIZE,
-		 &buffer->mem[voicenum].dma_handle[pagecount])) == NULL) {
-			buffer->pages = pagecount;
-			return -1;
-		}
-
-		DPD(2, "Virtual Addx: %p\n", buffer->mem[voicenum].addr[pagecount]);
-
-		for (i = 0; i < PAGE_SIZE / EMUPAGESIZE; i++) {
-			busaddx = buffer->mem[voicenum].dma_handle[pagecount] + i * EMUPAGESIZE;
-
-			DPD(3, "Bus Addx: %#lx\n", busaddx);
-
-			pageindex = buffer->mem[voicenum].emupageindex + pagecount * PAGE_SIZE / EMUPAGESIZE + i;
-
-			((u32 *) card->virtualpagetable.addr)[pageindex] = cpu_to_le32((busaddx * 2) | pageindex);
-		}
-	}
-
-	return 0;
-}
-
-/**
- * free_buffer -
- *
- * frees the memory buffer for a voice.
- */
-static void free_buffer(struct emu10k1_card *card, struct waveout_buffer *buffer, unsigned int voicenum)
-{
-	u32 pagecount, pageindex;
-	int i;
-
-	if (buffer->mem[voicenum].emupageindex < 0)
-		return;
-
-	for (pagecount = 0; pagecount < buffer->pages; pagecount++) {
-		pci_free_consistent(card->pci_dev, PAGE_SIZE,
-		 buffer->mem[voicenum].addr[pagecount],
-		 buffer->mem[voicenum].dma_handle[pagecount]);
-
-		for (i = 0; i < PAGE_SIZE / EMUPAGESIZE; i++) {
-			pageindex = buffer->mem[voicenum].emupageindex + pagecount * PAGE_SIZE / EMUPAGESIZE + i;
-			((u32 *) card->virtualpagetable.addr)[pageindex] =
-			 cpu_to_le32((card->silentpage.dma_handle * 2) | pageindex);
-		}
-	}
-
-	emu10k1_addxmgr_free(card, buffer->mem[voicenum].emupageindex);
-	buffer->mem[voicenum].emupageindex = -1;
 }
 
 static int get_voice(struct emu10k1_card *card, struct woinst *woinst, unsigned int voicenum)
 {
 	struct emu_voice *voice = &woinst->voice[voicenum];
-	/* Allocate voices here, if no voices available, return error.
-	 * Init voice_allocdesc first.*/
+
+	/* Allocate voices here, if no voices available, return error. */
 
 	voice->usage = VOICE_USAGE_PLAYBACK;
 
@@ -219,7 +144,7 @@
 
 	DPD(2, "Initial pitch --> %#x\n", voice->initial_pitch);
 
-	voice->startloop = (woinst->buffer.mem[voicenum].emupageindex << 12) /
+	voice->startloop = (voice->mem.emupageindex << 12) /
 	 woinst->format.bytespervoicesample;
 	voice->endloop = voice->startloop + woinst->buffer.size / woinst->format.bytespervoicesample;
 	voice->start = voice->startloop;
@@ -302,7 +227,7 @@
 	DPF(2, "emu10k1_waveout_open()\n");
 
 	for (voicenum = 0; voicenum < woinst->num_voices; voicenum++) {
-		if (alloc_buffer(card, buffer, voicenum) < 0) {
+		if (emu10k1_voice_alloc_buffer(card, &woinst->voice[voicenum].mem, woinst->buffer.pages) < 0) {
 			ERROR();
 			emu10k1_waveout_close(wave_dev);
 			return -1;
@@ -324,7 +249,7 @@
 	delay = (48000 * woinst->buffer.fragment_size) /
 		 (woinst->format.samplingrate * woinst->format.bytespervoicesample);
 
-	emu10k1_timer_install(card, &woinst->timer, delay / 2);
+	emu10k1_timer_install(card, &woinst->timer, delay);
 
 	woinst->state = WAVE_STATE_OPEN;
 
@@ -345,7 +270,7 @@
 
 	for (voicenum = 0; voicenum < woinst->num_voices; voicenum++) {
 		emu10k1_voice_free(&woinst->voice[voicenum]);
-		free_buffer(card, &woinst->buffer, voicenum);
+		emu10k1_voice_free_buffer(card, &woinst->voice[voicenum].mem);
 	}
 
 	woinst->state = WAVE_STATE_CLOSED;
@@ -404,7 +329,7 @@
 		delay = (48000 * woinst->buffer.fragment_size) /
 			 (woinst->format.samplingrate * woinst->format.bytespervoicesample);
 
-		emu10k1_timer_install(card, &woinst->timer, delay / 2);
+		emu10k1_timer_install(card, &woinst->timer, delay);
 	}
 
 	return 0;
@@ -449,7 +374,7 @@
 
 	pending_bytes = buffer->size - buffer->free_bytes;
 
-	buffer->fill_silence = (pending_bytes < (signed) buffer->fragment_size) ? 1 : 0;
+	buffer->fill_silence = (pending_bytes < (signed) buffer->fragment_size * 2) ? 1 : 0;
 
 	if (pending_bytes > (signed) buffer->silence_bytes) {
 		*total_free_bytes = (buffer->free_bytes + buffer->silence_bytes);
@@ -508,14 +433,14 @@
         unsigned int pg;
 	unsigned int pgoff;
 	unsigned int voice_num;
-	struct waveout_mem *mem = woinst->buffer.mem;
+	struct emu_voice *voice = woinst->voice;
 
 	pg = str / PAGE_SIZE;
 	pgoff = str % PAGE_SIZE;
 
 	while (len) { 
 		for (voice_num = 0; voice_num < woinst->num_voices; voice_num++) {
-			__copy_from_user((u8 *)(mem[voice_num].addr[pg]) + pgoff, src, woinst->format.bytespervoicesample);
+			__copy_from_user((u8 *)(voice[voice_num].mem.addr[pg]) + pgoff, src, woinst->format.bytespervoicesample);
 			src += woinst->format.bytespervoicesample;
 		}
 
@@ -540,7 +465,7 @@
 	unsigned int pg;
 	unsigned int pgoff;
 	unsigned int voice_num;
-        struct waveout_mem *mem = woinst->buffer.mem;
+        struct emu_voice *voice = woinst->voice;
 	unsigned int  k;
 
 	pg = str / PAGE_SIZE;
@@ -549,22 +474,22 @@
 	if (len > PAGE_SIZE - pgoff) {
 		k = PAGE_SIZE - pgoff;
 		for (voice_num = 0; voice_num < woinst->num_voices; voice_num++)
-			memset((u8 *)mem[voice_num].addr[pg] + pgoff, data, k);
+			memset((u8 *)voice[voice_num].mem.addr[pg] + pgoff, data, k);
 		len -= k;
 		while (len > PAGE_SIZE) {
 			pg++;
 			for (voice_num = 0; voice_num < woinst->num_voices; voice_num++)
-				memset(mem[voice_num].addr[pg], data, PAGE_SIZE);
+				memset(voice[voice_num].mem.addr[pg], data, PAGE_SIZE);
 
 			len -= PAGE_SIZE;
 		}
 		pg++;
 		for (voice_num = 0; voice_num < woinst->num_voices; voice_num++)
-			memset(mem[voice_num].addr[pg], data, len);
+			memset(voice[voice_num].mem.addr[pg], data, len);
 
 	} else {
 		for (voice_num = 0; voice_num < woinst->num_voices; voice_num++)
-			memset((u8 *)mem[voice_num].addr[pg] + pgoff, data, len);
+			memset((u8 *)voice[voice_num].mem.addr[pg] + pgoff, data, len);
 	}
 }
 
@@ -578,6 +503,7 @@
 void emu10k1_waveout_xferdata(struct woinst *woinst, u8 *data, u32 *size)
 {
 	struct waveout_buffer *buffer = &woinst->buffer;
+	struct voice_mem *mem = &woinst->voice[0].mem;
 	u32 sizetocopy, sizetocopy_now, start;
 	unsigned long flags;
 
@@ -606,14 +532,14 @@
 			copy_ilv_block(woinst, start, data, sizetocopy_now);
 			copy_ilv_block(woinst, 0, data + sizetocopy_now * woinst->num_voices, sizetocopy);
 		} else {
-			copy_block(buffer->mem[0].addr, start, data, sizetocopy_now);
-			copy_block(buffer->mem[0].addr, 0, data + sizetocopy_now, sizetocopy);
+			copy_block(mem->addr, start, data, sizetocopy_now);
+			copy_block(mem->addr, 0, data + sizetocopy_now, sizetocopy);
 		}
 	} else {
 		if (woinst->num_voices > 1)
 			copy_ilv_block(woinst, start, data, sizetocopy);
 		else
-			copy_block(buffer->mem[0].addr, start, data, sizetocopy);
+			copy_block(mem->addr, start, data, sizetocopy);
 	}
 }
 
@@ -670,7 +596,7 @@
 {
 	u32 hw_pos;
 	u32 diff;
-	
+
 	/* There is no actual start yet */
 	if (!(woinst->state & WAVE_STATE_STARTED)) {
 		hw_pos = woinst->buffer.hw_pos;
diff -urN linux-2.4.18-pre4/drivers/sound/emu10k1/cardwo.h linux/drivers/sound/emu10k1/cardwo.h
--- linux-2.4.18-pre4/drivers/sound/emu10k1/cardwo.h	Tue Jan 15 19:00:53 2002
+++ linux/drivers/sound/emu10k1/cardwo.h	Fri Jan 18 17:33:30 2002
@@ -47,20 +47,12 @@
 #define WAVEOUT_MINFRAGSHIFT	6
 #define WAVEOUT_MAXVOICES 6
 
-/* waveout_mem is cardwo internal */
-struct waveout_mem {
-	int emupageindex;
-	void *addr[BUFMAXPAGES];
-	dma_addr_t dma_handle[BUFMAXPAGES];
-};
-
 struct waveout_buffer {
 	u16 ossfragshift;
 	u32 numfrags;
 	u32 fragment_size;	/* in bytes units */
 	u32 size;		/* in bytes units */
 	u32 pages;		/* buffer size in page units*/
-	struct waveout_mem mem[WAVEOUT_MAXVOICES];
 	u32 silence_pos;	/* software cursor position (including silence bytes) */
 	u32 hw_pos;		/* hardware cursor position */
 	u32 free_bytes;		/* free bytes available on the buffer (not including silence bytes) */
diff -urN linux-2.4.18-pre4/drivers/sound/emu10k1/efxmgr.c linux/drivers/sound/emu10k1/efxmgr.c
--- linux-2.4.18-pre4/drivers/sound/emu10k1/efxmgr.c	Tue Jan 15 19:00:53 2002
+++ linux/drivers/sound/emu10k1/efxmgr.c	Fri Jan 18 17:33:30 2002
@@ -173,7 +173,7 @@
 	unsigned long flags;
 	int muting;
 
-	const s32 log2lin[5] ={                  //  attenuation (dB)
+	static const s32 log2lin[4] ={           //  attenuation (dB)
 		0x7fffffff,                      //       0.0         
 		0x7fffffff * 0.840896415253715 , //       1.5          
 		0x7fffffff * 0.707106781186548,  //       3.0
diff -urN linux-2.4.18-pre4/drivers/sound/emu10k1/hwaccess.h linux/drivers/sound/emu10k1/hwaccess.h
--- linux-2.4.18-pre4/drivers/sound/emu10k1/hwaccess.h	Tue Jan 15 19:00:53 2002
+++ linux/drivers/sound/emu10k1/hwaccess.h	Fri Jan 18 17:34:45 2002
@@ -126,6 +126,7 @@
 #define CMD_SETMCH_FX		_IOW('D', 17, struct mixer_private_ioctl)
 #define CMD_SETPASSTHROUGH	_IOW('D', 18, struct mixer_private_ioctl)
 #define CMD_PRIVATE3_VERSION	_IOW('D', 19, struct mixer_private_ioctl)
+#define CMD_AC97_BOOST		_IOW('D', 20, struct mixer_private_ioctl)
 
 //up this number when breaking compatibility
 #define PRIVATE3_VERSION 1
@@ -216,7 +217,7 @@
 
 void sblive_writeptr(struct emu10k1_card *, u32 , u32 , u32 );
 void sblive_writeptr_tag(struct emu10k1_card *card, u32 channel, ...);
-#define TAGLIST_END 0
+#define TAGLIST_END	0
 
 u32 sblive_readptr(struct emu10k1_card *, u32 , u32 );
 
diff -urN linux-2.4.18-pre4/drivers/sound/emu10k1/irqmgr.c linux/drivers/sound/emu10k1/irqmgr.c
--- linux-2.4.18-pre4/drivers/sound/emu10k1/irqmgr.c	Tue Jan 15 19:00:53 2002
+++ linux/drivers/sound/emu10k1/irqmgr.c	Fri Jan 18 17:33:30 2002
@@ -1,4 +1,3 @@
-
 /*
  **********************************************************************
  *     irqmgr.c - IRQ manager for emu10k1 driver
@@ -41,7 +40,7 @@
 void emu10k1_interrupt(int irq, void *dev_id, struct pt_regs *regs)
 {
 	struct emu10k1_card *card = (struct emu10k1_card *) dev_id;
-	u32 irqstatus;
+	u32 irqstatus, irqstatus_tmp;
 
 	DPD(4, "emu10k1_interrupt called, irq =  %u\n", irq);
 
@@ -60,8 +59,7 @@
 	while ((irqstatus = inl(card->iobase + IPR))) {
 		DPD(4, "irq status %#x\n", irqstatus);
 
-		/* acknowledge interrupt */
-		outl(irqstatus, card->iobase + IPR);
+		irqstatus_tmp = irqstatus;
 
 		if (irqstatus & IRQTYPE_TIMER) {
 			emu10k1_timer_irqhandler(card);
@@ -98,7 +96,15 @@
 			irqstatus &=~IPR_VOLDECR;
 		}
 
-		if (irqstatus)
-			emu10k1_irq_disable(card, irqstatus);
+		if (irqstatus){
+			printk(KERN_ERR "emu10k1: Warning, unhandled interrupt: 0x%08x\n", irqstatus);
+			//make sure any interrupts we don't handle are disabled:
+			emu10k1_irq_disable(card, ~(INTE_MIDIRXENABLE | INTE_MIDITXENABLE | INTE_INTERVALTIMERENB |
+						INTE_VOLDECRENABLE | INTE_VOLINCRENABLE | INTE_MUTEENABLE |
+						INTE_FXDSPENABLE));
+		}
+
+		/* acknowledge interrupt */
+                outl(irqstatus_tmp, card->iobase + IPR);
 	}
 }
diff -urN linux-2.4.18-pre4/drivers/sound/emu10k1/main.c linux/drivers/sound/emu10k1/main.c
--- linux-2.4.18-pre4/drivers/sound/emu10k1/main.c	Tue Jan 15 19:00:53 2002
+++ linux/drivers/sound/emu10k1/main.c	Fri Jan 18 17:34:45 2002
@@ -1,4 +1,4 @@
-/*
+ /*
  **********************************************************************
  *     main.c - Creative EMU10K1 audio driver
  *     Copyright 1999, 2000 Creative Labs, Inc.
@@ -69,6 +69,11 @@
  *     0.16 Mixer improvements, added old treble/bass support (Daniel Bertrand)
  *          Small code format cleanup.
  *          Deadlock bug fix for emu10k1_volxxx_irqhandler().
+ *     0.17 Fix for mixer SOUND_MIXER_INFO ioctl.
+ *          Fix for HIGHMEM machines (emu10k1 can only do 31 bit bus master) 
+ *	     midi poll initial implementation.
+ *          Small mixer fixes/cleanups.
+ *	     Improved support for 5.1 cards.
  *
  *********************************************************************/
 
@@ -102,11 +107,10 @@
 #define SNDCARD_EMU10K1 46
 #endif
  
-#define DRIVER_VERSION "0.16"
+#define DRIVER_VERSION "0.17"
 
-/* FIXME: is this right? */
-/* does the card support 32 bit bus master?*/
-#define EMU10K1_DMA_MASK                0xffffffff	/* DMA buffer mask for pci_alloc_consist */
+/* the emu10k1 _seems_ to only supports 29 bit (512MiB) bit bus master */
+#define EMU10K1_DMA_MASK                0x1fffffff	/* DMA buffer mask for pci_alloc_consist */
 
 #ifndef PCI_VENDOR_ID_CREATIVE
 #define PCI_VENDOR_ID_CREATIVE 0x1102
@@ -211,6 +215,8 @@
 static int __devinit emu10k1_mixer_init(struct emu10k1_card *card)
 {
 	char s[32];
+
+	struct ac97_codec *codec = &card->ac97;
 	card->ac97.dev_mixer = register_sound_mixer(&emu10k1_mixer_fops, -1);
 	if (card->ac97.dev_mixer < 0) {
 		printk(KERN_ERR "emu10k1: cannot register mixer device\n");
@@ -228,11 +234,14 @@
 			printk(KERN_ERR "emu10k1: unable to probe AC97 codec\n");
 			goto err_out;
 		}
-		/* 5.1: Enable the additional AC97 Slots. If the emu10k1 version
-			does not support this, it shouldn't do any harm */
-		sblive_writeptr(card, AC97SLOT, 0, AC97SLOT_CNTR | AC97SLOT_LFE);
+		/* 5.1: Enable the additional AC97 Slots and unmute extra channels on AC97 codec */
+		if (codec->codec_read(codec, AC97_EXTENDED_ID) & 0x0080){
+			printk(KERN_INFO "emu10k1: SBLive! 5.1 card detected\n"); 
+			sblive_writeptr(card, AC97SLOT, 0, AC97SLOT_CNTR | AC97SLOT_LFE);
+			codec->codec_write(codec, AC97_SURROUND_MASTER, 0x0);
+		}
 
-		// Force 5bit
+		// Force 5bit:		    
 		//card->ac97.bit_resolution=5;
 
 		if (!proc_mkdir ("driver/emu10k1", 0)) {
@@ -586,15 +595,15 @@
 	CONNECT(PCM1_IN_R, ANALOG_REAR_R);
 
 	/* Digital In + PCM + AC97 In + MULTI_FRONT --> Digital out */
-	OP(6, 0x10b, 0x100, 0x102, 0x10c);
-	OP(6, 0x10b, 0x10b, 0x113, 0x40);
+	OP(6, 0x10a, 0x100, 0x102, 0x10c);
+	OP(6, 0x10a, 0x10a, 0x113, 0x40);
 
 	CONNECT(MULTI_FRONT_L, DIGITAL_OUT_L);
 	CONNECT(PCM_IN_L, DIGITAL_OUT_L);
 	CONNECT(AC97_IN_L, DIGITAL_OUT_L);
 	CONNECT(SPDIF_CD_L, DIGITAL_OUT_L);
 
-	OP(6, 0x10a, 0x101, 0x103, 0x10e);
+	OP(6, 0x10b, 0x101, 0x103, 0x10e);
 	OP(6, 0x10b, 0x10b, 0x114, 0x40);
 
 	CONNECT(MULTI_FRONT_R, DIGITAL_OUT_R);
@@ -768,7 +777,7 @@
 				    VTFT, 0xffff,
 				    CVCF, 0xffff,
 				    PTRX, 0,
-				    CPF, 0,
+				    //CPF, 0,
 				    CCR, 0,
 
 				    PSST, 0,
@@ -794,7 +803,9 @@
 				    ENVVOL, 0,
 				    ENVVAL, 0,
                                     TAGLIST_END);
+		sblive_writeptr(card, CPF, nCh, 0);
 	}
+	
 
 	/*
 	 ** Init to 0x02109204 :
@@ -951,8 +962,9 @@
 				    VTFT, 0,
 				    CVCF, 0,
 				    PTRX, 0,
-				    CPF, 0,
+				    //CPF, 0,
 				    TAGLIST_END);
+		sblive_writeptr(card, CPF, ch, 0);
 	}
 
 	/* Disable audio and lock cache */
diff -urN linux-2.4.18-pre4/drivers/sound/emu10k1/midi.c linux/drivers/sound/emu10k1/midi.c
--- linux-2.4.18-pre4/drivers/sound/emu10k1/midi.c	Tue Jan 15 19:00:53 2002
+++ linux/drivers/sound/emu10k1/midi.c	Fri Jan 18 17:34:45 2002
@@ -31,6 +31,7 @@
 
 #define __NO_VERSION__
 #include <linux/module.h>
+#include <linux/poll.h>
 #include <linux/slab.h>
 #include <linux/version.h>
 #include <linux/sched.h>
@@ -371,8 +372,32 @@
 
 static unsigned int emu10k1_midi_poll(struct file *file, struct poll_table_struct *wait)
 {
+	struct emu10k1_mididevice *midi_dev = (struct emu10k1_mididevice *) file->private_data;
+	unsigned long flags;
+	unsigned int mask = 0;
+
 	DPF(4, "emu10k1_midi_poll() called\n");
-	return 0;
+
+	if (file->f_mode & FMODE_WRITE)
+		poll_wait(file, &midi_dev->oWait, wait);
+
+	if (file->f_mode & FMODE_READ)
+		poll_wait(file, &midi_dev->iWait, wait);
+
+	spin_lock_irqsave(&midi_spinlock, flags);
+
+	if (file->f_mode & FMODE_WRITE)
+		mask |= POLLOUT | POLLWRNORM;
+
+	if (file->f_mode & FMODE_READ) {
+		if (midi_dev->mistate == MIDIIN_STATE_STARTED)
+			if (midi_dev->icnt > 0)
+				mask |= POLLIN | POLLRDNORM;
+	}
+
+	spin_unlock_irqrestore(&midi_spinlock, flags);
+
+	return mask;
 }
 
 int emu10k1_midi_callback(unsigned long msg, unsigned long refdata, unsigned long *pmsg)
diff -urN linux-2.4.18-pre4/drivers/sound/emu10k1/mixer.c linux/drivers/sound/emu10k1/mixer.c
--- linux-2.4.18-pre4/drivers/sound/emu10k1/mixer.c	Tue Jan 15 19:00:53 2002
+++ linux/drivers/sound/emu10k1/mixer.c	Fri Jan 18 17:34:45 2002
@@ -444,6 +444,7 @@
 
 		case CMD_SETGPR2OSS:
 			id = ctl->val[0];
+			/* 0 == left, 1 == right */
 			ch = ctl->val[1];
 			addr = ctl->val[2];
 
@@ -460,13 +461,13 @@
 			if (addr >= 0) {
 				unsigned int state = card->ac97.mixer_state[id];
 
-				if (ch) {
+				if (ch == 1) {
 					state >>= 8;
 					card->ac97.stereo_mixers |= (1 << id);
-				} else {
-					card->ac97.supported_mixers |= (1 << id);
 				}
 
+				card->ac97.supported_mixers |= (1 << id);
+
 				if (id == SOUND_MIXER_TREBLE) {
 					set_treble(card, card->ac97.mixer_state[id] & 0xff, (card->ac97.mixer_state[id] >> 8) & 0xff);
 				} else if (id == SOUND_MIXER_BASS) {
@@ -475,10 +476,10 @@
 					emu10k1_set_volume_gpr(card, addr, state & 0xff,
 							       volume_params[id]);
 			} else {
-				if (ch) {
-					card->ac97.stereo_mixers &= ~(1 << id);
-					card->ac97.stereo_mixers |= card->ac97_stereo_mixers;
-				} else {
+				card->ac97.stereo_mixers &= ~(1 << id);
+				card->ac97.stereo_mixers |= card->ac97_stereo_mixers;
+
+				if (ch == 0) {
 					card->ac97.supported_mixers &= ~(1 << id);
 					card->ac97.supported_mixers |= card->ac97_supported_mixers;
 				}
@@ -499,6 +500,12 @@
 				ret = -EFAULT;
 			break;
 
+		case CMD_AC97_BOOST:
+			if(ctl->val[0])
+				emu10k1_ac97_write(&card->ac97, 0x18, 0x0);	
+			else
+				emu10k1_ac97_write(&card->ac97, 0x18, 0x0808);
+			break;
 		default:
 			ret = -EINVAL;
 			break;
@@ -572,6 +579,8 @@
 	int val;
 	int scale;
 
+	card->ac97.modcnt++;
+
 	if (get_user(val, (int *)arg))
 		return -EFAULT;
 
@@ -626,7 +635,7 @@
 			return 0;
 		}
 
-		if ((_IOC_DIR(cmd) == (_IOC_WRITE|_IOC_READ)) && oss_mixer <= SOUND_MIXER_NRDEVICES)
+		if ((_SIOC_DIR(cmd) == (_SIOC_WRITE|_SIOC_READ)) && oss_mixer <= SOUND_MIXER_NRDEVICES)
 			ret = emu10k1_dsp_mixer(card, oss_mixer, arg);
 		else
 			ret = card->ac97.mixer_ioctl(&card->ac97, cmd, arg);
diff -urN linux-2.4.18-pre4/drivers/sound/emu10k1/recmgr.c linux/drivers/sound/emu10k1/recmgr.c
--- linux-2.4.18-pre4/drivers/sound/emu10k1/recmgr.c	Tue Jan 15 19:00:53 2002
+++ linux/drivers/sound/emu10k1/recmgr.c	Fri Jan 18 17:33:30 2002
@@ -130,7 +130,7 @@
 		break;
 	}
 
-	DPD(2, "bus addx: %#x\n", buffer->dma_handle);
+	DPD(2, "bus addx: %#lx\n", (unsigned long) buffer->dma_handle);
 
 	sblive_writeptr(card, buffer->addrreg, 0, buffer->dma_handle);
 
diff -urN linux-2.4.18-pre4/drivers/sound/emu10k1/voicemgr.c linux/drivers/sound/emu10k1/voicemgr.c
--- linux-2.4.18-pre4/drivers/sound/emu10k1/voicemgr.c	Tue Jan 15 19:00:53 2002
+++ linux/drivers/sound/emu10k1/voicemgr.c	Fri Jan 18 17:33:30 2002
@@ -32,6 +32,84 @@
 #include "voicemgr.h"
 #include "8010.h"
 
+/**
+ * emu10k1_voice_alloc_buffer -
+ *
+ * allocates the memory buffer for a voice. Two page tables are kept for each buffer.
+ * One (dma_handle) keeps track of the host memory pages used and the other (virtualpagetable)
+ * is passed to the device so that it can do DMA to host memory.
+ *
+ */
+int emu10k1_voice_alloc_buffer(struct emu10k1_card *card, struct voice_mem *mem, u32 pages)
+{
+	u32 pageindex, pagecount;
+	unsigned long busaddx;
+	int i;
+
+	DPD(2, "requested pages is: %d\n", pages);
+
+	if ((mem->emupageindex = emu10k1_addxmgr_alloc(pages * PAGE_SIZE, card)) < 0)
+	{
+		DPF(1, "couldn't allocate emu10k1 address space\n");
+		return -1;
+	}
+
+	/* Fill in virtual memory table */
+	for (pagecount = 0; pagecount < pages; pagecount++) {
+		if ((mem->addr[pagecount] = pci_alloc_consistent(card->pci_dev, PAGE_SIZE, &mem->dma_handle[pagecount]))
+			== NULL) {
+			mem->pages = pagecount;
+			DPF(1, "couldn't allocate dma memory\n");
+			return -1;
+		}
+
+		DPD(2, "Virtual Addx: %p\n", mem->addr[pagecount]);
+
+		for (i = 0; i < PAGE_SIZE / EMUPAGESIZE; i++) {
+			busaddx = mem->dma_handle[pagecount] + i * EMUPAGESIZE;
+
+			DPD(3, "Bus Addx: %#lx\n", busaddx);
+
+			pageindex = mem->emupageindex + pagecount * PAGE_SIZE / EMUPAGESIZE + i;
+
+			((u32 *) card->virtualpagetable.addr)[pageindex] = cpu_to_le32((busaddx * 2) | pageindex);
+		}
+	}
+
+	mem->pages = pagecount;
+
+	return 0;
+}
+
+/**
+ * emu10k1_voice_free_buffer -
+ *
+ * frees the memory buffer for a voice.
+ */
+void emu10k1_voice_free_buffer(struct emu10k1_card *card, struct voice_mem *mem)
+{
+	u32 pagecount, pageindex;
+	int i;
+
+	if (mem->emupageindex < 0)
+		return;
+
+	for (pagecount = 0; pagecount < mem->pages; pagecount++) {
+		pci_free_consistent(card->pci_dev, PAGE_SIZE,
+					mem->addr[pagecount],
+					mem->dma_handle[pagecount]);
+
+		for (i = 0; i < PAGE_SIZE / EMUPAGESIZE; i++) {
+			pageindex = mem->emupageindex + pagecount * PAGE_SIZE / EMUPAGESIZE + i;
+			((u32 *) card->virtualpagetable.addr)[pageindex] =
+				cpu_to_le32((card->silentpage.dma_handle * 2) | pageindex);
+		}
+	}
+
+	emu10k1_addxmgr_free(card, mem->emupageindex);
+	mem->emupageindex = -1;
+}
+
 int emu10k1_voice_alloc(struct emu10k1_card *card, struct emu_voice *voice)
 {
 	u8 *voicetable = card->voicetable;
@@ -96,8 +174,10 @@
 							VTFT, 0x0000ffff,
 							PTRX_PITCHTARGET, 0,
 							CVCF, 0x0000ffff,
-							CPF, 0,
+							//CPF, 0,
 							TAGLIST_END);
+		
+		sblive_writeptr(card, CPF, voice->num + i, 0);
 	}
 
 	voice->usage = VOICE_USAGE_FREE;
diff -urN linux-2.4.18-pre4/drivers/sound/emu10k1/voicemgr.h linux/drivers/sound/emu10k1/voicemgr.h
--- linux-2.4.18-pre4/drivers/sound/emu10k1/voicemgr.h	Tue Jan 15 19:00:53 2002
+++ linux/drivers/sound/emu10k1/voicemgr.h	Fri Jan 18 17:33:30 2002
@@ -64,6 +64,12 @@
 	u32 byampl_env_decay;
 };
 
+struct voice_mem {
+	int emupageindex;
+	void *addr[BUFMAXPAGES];
+	dma_addr_t dma_handle[BUFMAXPAGES];
+	u32 pages;
+};
 
 struct emu_voice
 {
@@ -72,16 +78,20 @@
 	u8 num;			/* Voice ID */
 	u8 flags;		/* Stereo/mono, 8/16 bit */
 
-        u32 startloop;
-        u32 endloop;
+	u32 startloop;
+	u32 endloop;
 	u32 start;
 
 	u32 initial_pitch;
 	u32 pitch_target;
 
 	struct voice_param params[2];
+
+	struct voice_mem mem;
 };
 
+int emu10k1_voice_alloc_buffer(struct emu10k1_card *, struct voice_mem *, u32);
+void emu10k1_voice_free_buffer(struct emu10k1_card *, struct voice_mem *);
 int emu10k1_voice_alloc(struct emu10k1_card *, struct emu_voice *);
 void emu10k1_voice_free(struct emu_voice *);
 void emu10k1_voice_playback_setup(struct emu_voice *);