diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /sound/oss/emu10k1/cardmo.c | |
download | op-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip op-kernel-dev-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'sound/oss/emu10k1/cardmo.c')
-rw-r--r-- | sound/oss/emu10k1/cardmo.c | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/sound/oss/emu10k1/cardmo.c b/sound/oss/emu10k1/cardmo.c new file mode 100644 index 0000000..5938d31 --- /dev/null +++ b/sound/oss/emu10k1/cardmo.c @@ -0,0 +1,229 @@ +/* + ********************************************************************** + * cardmo.c - MIDI UART output HAL for emu10k1 driver + * Copyright 1999, 2000 Creative Labs, Inc. + * + ********************************************************************** + * + * Date Author Summary of changes + * ---- ------ ------------------ + * October 20, 1999 Bertrand Lee base code release + * November 2, 1999 Alan Cox cleaned up + * + ********************************************************************** + * + * 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 <linux/slab.h> + +#include "hwaccess.h" +#include "8010.h" +#include "cardmo.h" +#include "irqmgr.h" + +/* Installs the IRQ handler for the MPU out port * + * and initialize parameters */ + +int emu10k1_mpuout_open(struct emu10k1_card *card, struct midi_openinfo *openinfo) +{ + struct emu10k1_mpuout *card_mpuout = card->mpuout; + + DPF(2, "emu10k1_mpuout_open()\n"); + + if (!(card_mpuout->status & FLAGS_AVAILABLE)) + return -1; + + /* Copy open info and mark channel as in use */ + card_mpuout->intr = 0; + card_mpuout->openinfo = *openinfo; + card_mpuout->status &= ~FLAGS_AVAILABLE; + card_mpuout->laststatus = 0x80; + card_mpuout->firstmidiq = NULL; + card_mpuout->lastmidiq = NULL; + + emu10k1_mpu_reset(card); + emu10k1_mpu_acquire(card); + + return 0; +} + +int emu10k1_mpuout_close(struct emu10k1_card *card) +{ + struct emu10k1_mpuout *card_mpuout = card->mpuout; + struct midi_queue *midiq; + struct midi_hdr *midihdr; + unsigned long flags; + + DPF(2, "emu10k1_mpuout_close()\n"); + + emu10k1_irq_disable(card, card->is_audigy ? A_INTE_MIDITXENABLE : INTE_MIDITXENABLE); + + spin_lock_irqsave(&card_mpuout->lock, flags); + + while (card_mpuout->firstmidiq != NULL) { + midiq = card_mpuout->firstmidiq; + midihdr = (struct midi_hdr *) midiq->refdata; + + card_mpuout->firstmidiq = midiq->next; + + kfree(midihdr->data); + kfree(midihdr); + kfree(midiq); + } + + card_mpuout->lastmidiq = NULL; + + emu10k1_mpu_release(card); + + card_mpuout->status |= FLAGS_AVAILABLE; + + spin_unlock_irqrestore(&card_mpuout->lock, flags); + + return 0; +} + +/* If there isn't enough buffer space, reject Midi Buffer. * +* Otherwise, disable TX, create object to hold Midi * +* uffer, update buffer flags and other parameters * +* before enabling TX again. */ + +int emu10k1_mpuout_add_buffer(struct emu10k1_card *card, struct midi_hdr *midihdr) +{ + struct emu10k1_mpuout *card_mpuout = card->mpuout; + struct midi_queue *midiq; + unsigned long flags; + + DPF(2, "emu10k1_mpuout_add_buffer()\n"); + + if (card_mpuout->state == CARDMIDIOUT_STATE_SUSPEND) + return 0; + + midihdr->flags |= MIDIBUF_INQUEUE; + midihdr->flags &= ~MIDIBUF_DONE; + + if ((midiq = (struct midi_queue *) kmalloc(sizeof(struct midi_queue), GFP_KERNEL)) == NULL) { + /* Message lost */ + return -1; + } + + midiq->next = NULL; + midiq->qtype = 1; + midiq->length = midihdr->bufferlength; + midiq->sizeLeft = midihdr->bufferlength; + midiq->midibyte = midihdr->data; + + midiq->refdata = (unsigned long) midihdr; + + spin_lock_irqsave(&card_mpuout->lock, flags); + + if (card_mpuout->firstmidiq == NULL) { + card_mpuout->firstmidiq = midiq; + card_mpuout->lastmidiq = midiq; + } else { + (card_mpuout->lastmidiq)->next = midiq; + card_mpuout->lastmidiq = midiq; + } + + card_mpuout->intr = 0; + + emu10k1_irq_enable(card, card->is_audigy ? A_INTE_MIDITXENABLE : INTE_MIDITXENABLE); + + spin_unlock_irqrestore(&card_mpuout->lock, flags); + + return 0; +} + +void emu10k1_mpuout_bh(unsigned long refdata) +{ + struct emu10k1_card *card = (struct emu10k1_card *) refdata; + struct emu10k1_mpuout *card_mpuout = card->mpuout; + int cByteSent = 0; + struct midi_queue *midiq; + struct midi_queue *doneq = NULL; + unsigned long flags; + + spin_lock_irqsave(&card_mpuout->lock, flags); + + while (card_mpuout->firstmidiq != NULL) { + midiq = card_mpuout->firstmidiq; + + while (cByteSent < 4 && midiq->sizeLeft) { + if (emu10k1_mpu_write_data(card, *midiq->midibyte) < 0) { + DPF(2, "emu10k1_mpuoutDpcCallback error!!\n"); + } else { + ++cByteSent; + --midiq->sizeLeft; + ++midiq->midibyte; + } + } + + if (midiq->sizeLeft == 0) { + if (doneq == NULL) + doneq = midiq; + card_mpuout->firstmidiq = midiq->next; + } else + break; + } + + if (card_mpuout->firstmidiq == NULL) + card_mpuout->lastmidiq = NULL; + + if (doneq != NULL) { + while (doneq != card_mpuout->firstmidiq) { + unsigned long callback_msg[3]; + + midiq = doneq; + doneq = midiq->next; + + if (midiq->qtype) { + callback_msg[0] = 0; + callback_msg[1] = midiq->length; + callback_msg[2] = midiq->refdata; + + emu10k1_midi_callback(ICARDMIDI_OUTLONGDATA, card_mpuout->openinfo.refdata, callback_msg); + } else if (((u8) midiq->refdata) < 0xF0 && ((u8) midiq->refdata) > 0x7F) + card_mpuout->laststatus = (u8) midiq->refdata; + + kfree(midiq); + } + } + + if ((card_mpuout->firstmidiq != NULL) || cByteSent) { + card_mpuout->intr = 0; + emu10k1_irq_enable(card, card->is_audigy ? A_INTE_MIDITXENABLE : INTE_MIDITXENABLE); + } + + spin_unlock_irqrestore(&card_mpuout->lock, flags); + + return; +} + +int emu10k1_mpuout_irqhandler(struct emu10k1_card *card) +{ + struct emu10k1_mpuout *card_mpuout = card->mpuout; + + DPF(4, "emu10k1_mpuout_irqhandler\n"); + + card_mpuout->intr = 1; + emu10k1_irq_disable(card, card->is_audigy ? A_INTE_MIDITXENABLE : INTE_MIDITXENABLE); + + tasklet_hi_schedule(&card_mpuout->tasklet); + + return 0; +} |