362 lines
8.9 KiB
C
362 lines
8.9 KiB
C
/*
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* sound/pas2_card.c
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*
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* Detection routine for the Pro Audio Spectrum cards.
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*
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* Copyright by Hannu Savolainen 1993
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer. 2.
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <i386/isa/sound/sound_config.h>
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#if defined(CONFIG_PAS)
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#define _PAS2_CARD_C_
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#define DEFINE_TRANSLATIONS
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#include <i386/isa/sound/pas_hw.h>
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/*
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* The Address Translation code is used to convert I/O register addresses to
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* be relative to the given base -register
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*/
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int translat_code;
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static int pas_intr_mask = 0;
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static int pas_irq = 0;
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static sound_os_info *pas_osp;
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char pas_model;
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static char *pas_model_names[] =
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{"", "Pro AudioSpectrum+", "CDPC", "Pro AudioSpectrum 16", "Pro AudioSpectrum 16D"};
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/*
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* pas_read() and pas_write() are equivalents of inb and outb
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*/
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/*
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* These routines perform the I/O address translation required
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*/
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/*
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* to support other than the default base address
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*/
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extern void mix_write(u_char data, int ioaddr);
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u_char
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pas_read(int ioaddr)
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{
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return inb(ioaddr ^ translat_code);
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}
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void
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pas_write(u_char data, int ioaddr)
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{
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outb(ioaddr ^ translat_code, data);
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}
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static void
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pas2_msg(char *foo)
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{
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printf(" PAS2: %s.\n", foo);
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}
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/******************* Begin of the Interrupt Handler ********************/
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void
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pasintr(int irq)
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{
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int status;
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status = pas_read(INTERRUPT_STATUS);
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pas_write(status, INTERRUPT_STATUS); /* Clear interrupt */
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if (status & I_S_PCM_SAMPLE_BUFFER_IRQ) {
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#ifdef CONFIG_AUDIO
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pas_pcm_interrupt(status, 1);
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#endif
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status &= ~I_S_PCM_SAMPLE_BUFFER_IRQ;
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}
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if (status & I_S_MIDI_IRQ) {
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#ifdef CONFIG_MIDI
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pas_midi_interrupt();
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#endif
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status &= ~I_S_MIDI_IRQ;
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}
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}
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int
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pas_set_intr(int mask)
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{
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if (!mask)
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return 0;
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pas_intr_mask |= mask;
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pas_write(pas_intr_mask, INTERRUPT_MASK);
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return 0;
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}
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int
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pas_remove_intr(int mask)
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{
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if (!mask)
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return 0;
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pas_intr_mask &= ~mask;
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pas_write(pas_intr_mask, INTERRUPT_MASK);
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return 0;
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}
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/******************* End of the Interrupt handler **********************/
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/******************* Begin of the Initialization Code ******************/
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static int
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config_pas_hw(struct address_info * hw_config)
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{
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char ok = 1;
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u_int int_ptrs; /* scsi/sound interrupt pointers */
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pas_irq = hw_config->irq;
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pas_write(0x00, INTERRUPT_MASK);
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pas_write(0x36, SAMPLE_COUNTER_CONTROL); /* Local timer control *
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* register */
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pas_write(0x36, SAMPLE_RATE_TIMER); /* Sample rate timer (16 bit) */
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pas_write(0, SAMPLE_RATE_TIMER);
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pas_write(0x74, SAMPLE_COUNTER_CONTROL); /* Local timer control *
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* register */
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pas_write(0x74, SAMPLE_BUFFER_COUNTER); /* Sample count register (16 *
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* bit) */
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pas_write(0, SAMPLE_BUFFER_COUNTER);
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pas_write(F_F_PCM_BUFFER_COUNTER | F_F_PCM_RATE_COUNTER | F_F_MIXER_UNMUTE | 1, FILTER_FREQUENCY);
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pas_write(P_C_PCM_DMA_ENABLE | P_C_PCM_MONO | P_C_PCM_DAC_MODE | P_C_MIXER_CROSS_L_TO_L | P_C_MIXER_CROSS_R_TO_R, PCM_CONTROL);
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pas_write(S_M_PCM_RESET | S_M_FM_RESET | S_M_SB_RESET | S_M_MIXER_RESET /* | S_M_OPL3_DUAL_MONO */ , SERIAL_MIXER);
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pas_write(I_C_1_BOOT_RESET_ENABLE
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#ifdef PAS_JOYSTICK_ENABLE
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| I_C_1_JOYSTICK_ENABLE
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#endif
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,IO_CONFIGURATION_1);
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if (pas_irq < 0 || pas_irq > 15) {
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printf("PAS2: Invalid IRQ %d", pas_irq);
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ok = 0;
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} else {
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int_ptrs = pas_read(IO_CONFIGURATION_3);
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int_ptrs |= I_C_3_PCM_IRQ_translate[pas_irq] & 0xf;
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pas_write(int_ptrs, IO_CONFIGURATION_3);
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if (!I_C_3_PCM_IRQ_translate[pas_irq]) {
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printf("PAS2: Invalid IRQ %d", pas_irq);
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ok = 0;
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} else {
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if (snd_set_irq_handler(pas_irq, pasintr, hw_config->osp) < 0)
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ok = 0;
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}
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}
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if (hw_config->dma < 0 || hw_config->dma > 7) {
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printf("PAS2: Invalid DMA selection %d", hw_config->dma);
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ok = 0;
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} else {
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pas_write(I_C_2_PCM_DMA_translate[hw_config->dma], IO_CONFIGURATION_2);
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if (!I_C_2_PCM_DMA_translate[hw_config->dma]) {
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printf("PAS2: Invalid DMA selection %d", hw_config->dma);
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ok = 0;
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} else {
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if (0) {
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printf("pas2_card.c: Can't allocate DMA channel\n");
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ok = 0;
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}
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}
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}
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/*
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* This fixes the timing problems of the PAS due to the Symphony
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* chipset as per Media Vision. Only define this if your PAS doesn't
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* work correctly.
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*/
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#ifdef SYMPHONY_PAS
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outb(0xa8, 0x05);
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outb(0xa9, 0x60);
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#endif
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#ifdef BROKEN_BUS_CLOCK
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pas_write(S_C_1_PCS_ENABLE | S_C_1_PCS_STEREO | S_C_1_PCS_REALSOUND | S_C_1_FM_EMULATE_CLOCK, SYSTEM_CONFIGURATION_1);
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#else
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/*
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* pas_write(S_C_1_PCS_ENABLE, SYSTEM_CONFIGURATION_1);
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*/
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pas_write(S_C_1_PCS_ENABLE | S_C_1_PCS_STEREO | S_C_1_PCS_REALSOUND, SYSTEM_CONFIGURATION_1);
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#endif
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pas_write(0x18, SYSTEM_CONFIGURATION_3); /* ??? */
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pas_write(F_F_MIXER_UNMUTE | 0x01, FILTER_FREQUENCY); /* Sets mute off and *
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* selects filter rate *
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* of 17.897 kHz */
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pas_write(8, PRESCALE_DIVIDER);
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mix_write(P_M_MV508_ADDRESS | 5, PARALLEL_MIXER);
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mix_write(5, PARALLEL_MIXER);
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#if defined(CONFIG_SB_EMULATION) && defined(CONFIG_SB)
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{
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struct address_info *sb_config;
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if ((sb_config = sound_getconf(SNDCARD_SB))) {
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u_char irq_dma;
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/*
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* Turn on Sound Blaster compatibility
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*/
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/*
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* bit 1 = SB emulation
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*/
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/*
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* bit 0 = MPU401 emulation (CDPC only :-( )
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*/
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pas_write(0x02, COMPATIBILITY_ENABLE);
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/*
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* "Emulation address"
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*/
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pas_write((sb_config->io_base >> 4) & 0x0f, EMULATION_ADDRESS);
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if (!E_C_SB_DMA_translate[sb_config->dma])
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printf("\n\nPAS16 Warning: Invalid SB DMA %d\n\n",
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sb_config->dma);
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if (!E_C_SB_IRQ_translate[sb_config->irq])
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printf("\n\nPAS16 Warning: Invalid SB IRQ %d\n\n",
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sb_config->irq);
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irq_dma = E_C_SB_DMA_translate[sb_config->dma] |
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E_C_SB_IRQ_translate[sb_config->irq];
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pas_write(irq_dma, EMULATION_CONFIGURATION);
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}
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}
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#else
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pas_write(0x00, COMPATIBILITY_ENABLE);
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#endif
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if (!ok)
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pas2_msg("Driver not enabled");
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return ok;
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}
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static int
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detect_pas_hw(struct address_info * hw_config)
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{
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u_char board_id, foo;
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/*
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* WARNING: Setting an option like W:1 or so that disables warm boot
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* reset of the card will screw up this detect code something fierce.
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* Adding code to handle this means possibly interfering with other
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* cards on the bus if you have something on base port 0x388. SO be
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* forewarned.
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*/
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outb(MASTER_DECODE, 0xBC); /* Talk to first board */
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outb(MASTER_DECODE, hw_config->io_base >> 2); /* Set base address */
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translat_code = PAS_DEFAULT_BASE ^ hw_config->io_base;
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pas_write(1, WAIT_STATE); /* One wait-state */
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board_id = pas_read(INTERRUPT_MASK);
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if (board_id == 0xff)
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return 0;
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/*
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* We probably have a PAS-series board, now check for a PAS2-series
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* board by trying to change the board revision bits. PAS2-series
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* hardware won't let you do this - the bits are read-only.
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*/
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foo = board_id ^ 0xe0;
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pas_write(foo, INTERRUPT_MASK);
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foo = inb(INTERRUPT_MASK);
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pas_write(board_id, INTERRUPT_MASK);
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if (board_id != foo) /* Not a PAS2 */
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return 0;
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pas_model = pas_read(CHIP_REV);
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return pas_model;
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}
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void
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attach_pas_card(struct address_info * hw_config)
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{
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pas_irq = hw_config->irq;
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pas_osp = hw_config->osp;
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if (detect_pas_hw(hw_config)) {
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if ((pas_model = pas_read(CHIP_REV))) {
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char temp[100];
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sprintf(temp,
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"%s rev %d", pas_model_names[(int) pas_model],
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pas_read(BOARD_REV_ID));
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conf_printf(temp, hw_config);
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}
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if (config_pas_hw(hw_config)) {
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#ifdef CONFIG_AUDIO
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pas_pcm_init(hw_config);
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#endif
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#if defined(CONFIG_SB_EMULATION) && defined(CONFIG_SB)
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sb_dsp_disable_midi(); /* The SB emulation don't
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* support * midi */
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#endif
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#ifdef CONFIG_MIDI
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pas_midi_init();
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#endif
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pas_init_mixer();
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}
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}
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}
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int
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probe_pas(struct address_info * hw_config)
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{
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pas_osp = hw_config->osp;
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return detect_pas_hw(hw_config);
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}
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#endif
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