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/*
**********************************************************************
* voicemgr.c - Voice manager for emu10k1 driver
* Copyright 1999, 2000 Creative Labs, Inc.
*
**********************************************************************
*
* Date Author Summary of changes
* ---- ------ ------------------
* October 20, 1999 Bertrand Lee base code release
*
**********************************************************************
*
* 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., 675 Mass Ave, Cambridge, MA 02139,
* USA.
*
**********************************************************************
*/
#include "voicemgr.h"
#include "8010.h"
#define PITCH_48000 0x00004000
#define PITCH_96000 0x00008000
#define PITCH_85000 0x00007155
#define PITCH_80726 0x00006ba2
#define PITCH_67882 0x00005a82
#define PITCH_57081 0x00004c1c
static u32 emu10k1_select_interprom(struct emu10k1_card *card,
struct emu_voice *voice)
{
if(voice->pitch_target==PITCH_48000)
return CCCA_INTERPROM_0;
else if(voice->pitch_target<PITCH_48000)
return CCCA_INTERPROM_1;
else if(voice->pitch_target>=PITCH_96000)
return CCCA_INTERPROM_0;
else if(voice->pitch_target>=PITCH_85000)
return CCCA_INTERPROM_6;
else if(voice->pitch_target>=PITCH_80726)
return CCCA_INTERPROM_5;
else if(voice->pitch_target>=PITCH_67882)
return CCCA_INTERPROM_4;
else if(voice->pitch_target>=PITCH_57081)
return CCCA_INTERPROM_3;
else
return CCCA_INTERPROM_2;
}
/**
* 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;
u32 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 = (u32) mem->dma_handle[pagecount] + i * EMUPAGESIZE;
DPD(3, "Bus Addx: %#x\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(((u32) 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;
int i;
unsigned long flags;
DPF(2, "emu10k1_voice_alloc()\n");
spin_lock_irqsave(&card->lock, flags);
if (voice->flags & VOICE_FLAGS_STEREO) {
for (i = 0; i < NUM_G; i += 2)
if ((voicetable[i] == VOICE_USAGE_FREE) && (voicetable[i + 1] == VOICE_USAGE_FREE)) {
voicetable[i] = voice->usage;
voicetable[i + 1] = voice->usage;
break;
}
} else {
for (i = 0; i < NUM_G; i++)
if (voicetable[i] == VOICE_USAGE_FREE) {
voicetable[i] = voice->usage;
break;
}
}
spin_unlock_irqrestore(&card->lock, flags);
if (i >= NUM_G)
return -1;
voice->card = card;
voice->num = i;
for (i = 0; i < (voice->flags & VOICE_FLAGS_STEREO ? 2 : 1); i++) {
DPD(2, " voice allocated -> %d\n", voice->num + i);
sblive_writeptr_tag(card, voice->num + i, IFATN, 0xffff,
DCYSUSV, 0,
VTFT, 0x0000ffff,
PTRX, 0,
TAGLIST_END);
}
return 0;
}
void emu10k1_voice_free(struct emu_voice *voice)
{
struct emu10k1_card *card = voice->card;
int i;
unsigned long flags;
DPF(2, "emu10k1_voice_free()\n");
if (voice->usage == VOICE_USAGE_FREE)
return;
for (i = 0; i < (voice->flags & VOICE_FLAGS_STEREO ? 2 : 1); i++) {
DPD(2, " voice released -> %d\n", voice->num + i);
sblive_writeptr_tag(card, voice->num + i, DCYSUSV, 0,
VTFT, 0x0000ffff,
PTRX_PITCHTARGET, 0,
CVCF, 0x0000ffff,
//CPF, 0,
TAGLIST_END);
sblive_writeptr(card, CPF, voice->num + i, 0);
}
voice->usage = VOICE_USAGE_FREE;
spin_lock_irqsave(&card->lock, flags);
card->voicetable[voice->num] = VOICE_USAGE_FREE;
if (voice->flags & VOICE_FLAGS_STEREO)
card->voicetable[voice->num + 1] = VOICE_USAGE_FREE;
spin_unlock_irqrestore(&card->lock, flags);
}
void emu10k1_voice_playback_setup(struct emu_voice *voice)
{
struct emu10k1_card *card = voice->card;
u32 start;
int i;
DPF(2, "emu10k1_voice_playback_setup()\n");
if (voice->flags & VOICE_FLAGS_STEREO) {
/* Set stereo bit */
start = 28;
sblive_writeptr(card, CPF, voice->num, CPF_STEREO_MASK);
sblive_writeptr(card, CPF, voice->num + 1, CPF_STEREO_MASK);
} else {
start = 30;
sblive_writeptr(card, CPF, voice->num, 0);
}
if(!(voice->flags & VOICE_FLAGS_16BIT))
start *= 2;
voice->start += start;
for (i = 0; i
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