audio/sb16/sb16_hw.c

21 hw_codec_write_byte(sb16_dev_t* dev, uint8 value)
27 		if (!(gISA->read_io_8(dev->port + SB16_CODEC_WRITE_STATUS) & 0x80))
32 	gISA->write_io_8(dev->port + SB16_CODEC_WRITE_DATA, value);
37 hw_codec_read_byte(sb16_dev_t* dev)
42 		if (gISA->read_io_8(dev->port + SB16_CODEC_READ_STATUS) & 0x80)
47 	return gISA->read_io_8(dev->port + SB16_CODEC_READ_DATA);
52 hw_codec_reg_write(sb16_dev_t* dev, uint8 index, uint8 value)
55 	gISA->write_io_8(dev->port + SB16_MIXER_ADDRESS, index);
56 	gISA->write_io_8(dev->port + SB16_MIXER_DATA, value);
61 hw_codec_reg_read(sb16_dev_t* dev, uint8 index)
64 	gISA->write_io_8(dev->port + SB16_MIXER_ADDRESS, index);
65 	return gISA->read_io_8(dev->port + SB16_MIXER_DATA);
70 hw_codec_read_version(sb16_dev_t* dev)
75 	hw_codec_write_byte(dev, SB16_CODEC_VERSION);
76 	major = hw_codec_read_byte(dev);
77 	minor = hw_codec_read_byte(dev);
89 hw_codec_read_irq_setup(sb16_dev_t* dev)
92 	int mask = hw_codec_reg_read(dev, SB16_IRQ_SETUP);
94 	dev->irq = 5;
97 		dev->irq = 2;
99 		dev->irq = 5;
101 		dev->irq = 7;
103 		dev->irq = 10;
108 hw_codec_read_dma_setup(sb16_dev_t* dev)
111     int mask = hw_codec_reg_read(dev, SB16_DMA_SETUP);
113     dev->dma8 = 1;
116         dev->dma8 = 0;
118         dev->dma8 = 1;
120         dev->dma8 = 3;
122     dev->dma16 = dev->dma8;
124         dev->dma16 = 5;
126         dev->dma16 = 6;
128         dev->dma16 = 7;
134 hw_codec_write_irq_setup(sb16_dev_t* dev)
139 	if (dev->irq == 2)
141 	if (dev->irq == 5)
143 	if (dev->irq == 7)
145 	if (dev->irq == 10)
148 	hw_codec_reg_write(dev, SB16_IRQ_SETUP, mask);
153 hw_codec_write_dma_setup(sb16_dev_t* dev)
156 	hw_codec_reg_write(dev, SB16_DMA_SETUP, (1 << dev->dma8) | (1 << dev->dma16));
163 	sb16_dev_t* dev = (sb16_dev_t*)cookie;
167 	int status = hw_codec_reg_read(dev, SB16_IRQ_STATUS);
175 			gISA->read_io_8(dev->port + SB16_CODEC_ACK_8_BIT);
177 			gISA->read_io_8(dev->port + SB16_CODEC_ACK_16_BIT);
180 		if (dev->irq >= 8)
186 		if (((dev->playback_stream.bits >> 3) & status) != 0) {
187 			sb16_stream_buffer_done(&dev->playback_stream);
190 		if (((dev->record_stream.bits >> 3) & status) != 0) {
191 			sb16_stream_buffer_done(&dev->record_stream);
206 hw_codec_reset(sb16_dev_t* dev)
212 		gISA->write_io_8(dev->port + SB16_CODEC_RESET, 1);
215 			gISA->read_io_8(dev->port + SB16_CODEC_RESET);
217 		gISA->write_io_8(dev->port + SB16_CODEC_RESET, 0);
219 		if (hw_codec_read_byte(dev) == 0xaa)
228 hw_codec_detect(sb16_dev_t* dev)
232 	if ((rc=hw_codec_reset(dev)) == B_OK) {
233 		if (hw_codec_read_version(dev) >= 0x400) {
234 			hw_codec_write_irq_setup(dev);
235 			hw_codec_write_dma_setup(dev);
250 sb16_stream_setup_buffers(sb16_dev_t* dev, sb16_stream_t* s, const char* desc)
257 sb16_stream_start(sb16_dev_t* dev, sb16_stream_t* s)
264 sb16_stream_stop(sb16_dev_t* dev, sb16_stream_t* s)
280 sb16_hw_init(sb16_dev_t* dev)
289 	if ((rc=hw_codec_detect(dev)) == B_OK) {
290 		if ((rc=gISA->lock_isa_dma_channel(dev->dma8)) == B_OK &&
291 			(rc=gISA->lock_isa_dma_channel(dev->dma16)) == B_OK) {
292 			rc = install_io_interrupt_handler(dev->irq, hw_codec_inth, dev, 0);
301 sb16_hw_stop(sb16_dev_t* dev)
307 sb16_hw_uninit(sb16_dev_t* dev)
309 	remove_io_interrupt_handler(dev->irq, hw_codec_inth, dev);
312 		gISA->unlock_isa_dma_channel(dev->dma8);
314 		if (dev->dma8 != dev->dma16)
315 			gISA->unlock_isa_dma_channel(dev->dma16);