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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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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!
229 lines
6.2 KiB
C
229 lines
6.2 KiB
C
/*
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**********************************************************************
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* cardmo.c - MIDI UART output HAL for emu10k1 driver
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* Copyright 1999, 2000 Creative Labs, Inc.
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*
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**********************************************************************
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*
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* Date Author Summary of changes
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* ---- ------ ------------------
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* October 20, 1999 Bertrand Lee base code release
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* November 2, 1999 Alan Cox cleaned up
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*
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**********************************************************************
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to the Free
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* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
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* USA.
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*
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**********************************************************************
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*/
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#include <linux/slab.h>
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#include "hwaccess.h"
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#include "8010.h"
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#include "cardmo.h"
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#include "irqmgr.h"
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/* Installs the IRQ handler for the MPU out port *
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* and initialize parameters */
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int emu10k1_mpuout_open(struct emu10k1_card *card, struct midi_openinfo *openinfo)
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{
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struct emu10k1_mpuout *card_mpuout = card->mpuout;
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DPF(2, "emu10k1_mpuout_open()\n");
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if (!(card_mpuout->status & FLAGS_AVAILABLE))
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return -1;
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/* Copy open info and mark channel as in use */
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card_mpuout->intr = 0;
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card_mpuout->openinfo = *openinfo;
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card_mpuout->status &= ~FLAGS_AVAILABLE;
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card_mpuout->laststatus = 0x80;
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card_mpuout->firstmidiq = NULL;
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card_mpuout->lastmidiq = NULL;
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emu10k1_mpu_reset(card);
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emu10k1_mpu_acquire(card);
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return 0;
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}
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int emu10k1_mpuout_close(struct emu10k1_card *card)
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{
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struct emu10k1_mpuout *card_mpuout = card->mpuout;
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struct midi_queue *midiq;
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struct midi_hdr *midihdr;
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unsigned long flags;
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DPF(2, "emu10k1_mpuout_close()\n");
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emu10k1_irq_disable(card, card->is_audigy ? A_INTE_MIDITXENABLE : INTE_MIDITXENABLE);
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spin_lock_irqsave(&card_mpuout->lock, flags);
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while (card_mpuout->firstmidiq != NULL) {
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midiq = card_mpuout->firstmidiq;
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midihdr = (struct midi_hdr *) midiq->refdata;
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card_mpuout->firstmidiq = midiq->next;
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kfree(midihdr->data);
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kfree(midihdr);
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kfree(midiq);
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}
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card_mpuout->lastmidiq = NULL;
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emu10k1_mpu_release(card);
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card_mpuout->status |= FLAGS_AVAILABLE;
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spin_unlock_irqrestore(&card_mpuout->lock, flags);
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return 0;
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}
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/* If there isn't enough buffer space, reject Midi Buffer. *
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* Otherwise, disable TX, create object to hold Midi *
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* uffer, update buffer flags and other parameters *
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* before enabling TX again. */
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int emu10k1_mpuout_add_buffer(struct emu10k1_card *card, struct midi_hdr *midihdr)
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{
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struct emu10k1_mpuout *card_mpuout = card->mpuout;
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struct midi_queue *midiq;
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unsigned long flags;
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DPF(2, "emu10k1_mpuout_add_buffer()\n");
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if (card_mpuout->state == CARDMIDIOUT_STATE_SUSPEND)
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return 0;
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midihdr->flags |= MIDIBUF_INQUEUE;
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midihdr->flags &= ~MIDIBUF_DONE;
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if ((midiq = (struct midi_queue *) kmalloc(sizeof(struct midi_queue), GFP_KERNEL)) == NULL) {
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/* Message lost */
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return -1;
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}
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midiq->next = NULL;
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midiq->qtype = 1;
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midiq->length = midihdr->bufferlength;
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midiq->sizeLeft = midihdr->bufferlength;
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midiq->midibyte = midihdr->data;
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midiq->refdata = (unsigned long) midihdr;
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spin_lock_irqsave(&card_mpuout->lock, flags);
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if (card_mpuout->firstmidiq == NULL) {
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card_mpuout->firstmidiq = midiq;
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card_mpuout->lastmidiq = midiq;
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} else {
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(card_mpuout->lastmidiq)->next = midiq;
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card_mpuout->lastmidiq = midiq;
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}
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card_mpuout->intr = 0;
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emu10k1_irq_enable(card, card->is_audigy ? A_INTE_MIDITXENABLE : INTE_MIDITXENABLE);
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spin_unlock_irqrestore(&card_mpuout->lock, flags);
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return 0;
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}
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void emu10k1_mpuout_bh(unsigned long refdata)
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{
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struct emu10k1_card *card = (struct emu10k1_card *) refdata;
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struct emu10k1_mpuout *card_mpuout = card->mpuout;
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int cByteSent = 0;
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struct midi_queue *midiq;
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struct midi_queue *doneq = NULL;
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unsigned long flags;
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spin_lock_irqsave(&card_mpuout->lock, flags);
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while (card_mpuout->firstmidiq != NULL) {
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midiq = card_mpuout->firstmidiq;
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while (cByteSent < 4 && midiq->sizeLeft) {
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if (emu10k1_mpu_write_data(card, *midiq->midibyte) < 0) {
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DPF(2, "emu10k1_mpuoutDpcCallback error!!\n");
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} else {
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++cByteSent;
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--midiq->sizeLeft;
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++midiq->midibyte;
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}
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}
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if (midiq->sizeLeft == 0) {
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if (doneq == NULL)
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doneq = midiq;
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card_mpuout->firstmidiq = midiq->next;
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} else
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break;
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}
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if (card_mpuout->firstmidiq == NULL)
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card_mpuout->lastmidiq = NULL;
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if (doneq != NULL) {
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while (doneq != card_mpuout->firstmidiq) {
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unsigned long callback_msg[3];
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midiq = doneq;
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doneq = midiq->next;
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if (midiq->qtype) {
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callback_msg[0] = 0;
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callback_msg[1] = midiq->length;
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callback_msg[2] = midiq->refdata;
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emu10k1_midi_callback(ICARDMIDI_OUTLONGDATA, card_mpuout->openinfo.refdata, callback_msg);
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} else if (((u8) midiq->refdata) < 0xF0 && ((u8) midiq->refdata) > 0x7F)
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card_mpuout->laststatus = (u8) midiq->refdata;
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kfree(midiq);
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}
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}
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if ((card_mpuout->firstmidiq != NULL) || cByteSent) {
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card_mpuout->intr = 0;
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emu10k1_irq_enable(card, card->is_audigy ? A_INTE_MIDITXENABLE : INTE_MIDITXENABLE);
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}
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spin_unlock_irqrestore(&card_mpuout->lock, flags);
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return;
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}
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int emu10k1_mpuout_irqhandler(struct emu10k1_card *card)
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{
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struct emu10k1_mpuout *card_mpuout = card->mpuout;
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DPF(4, "emu10k1_mpuout_irqhandler\n");
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card_mpuout->intr = 1;
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emu10k1_irq_disable(card, card->is_audigy ? A_INTE_MIDITXENABLE : INTE_MIDITXENABLE);
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tasklet_hi_schedule(&card_mpuout->tasklet);
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return 0;
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}
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