12 static void snd_gf1_dma_ack(struct snd_gus_card * gus)  in snd_gf1_dma_ack()  argument
16 	spin_lock_irqsave(&gus->reg_lock, flags);  in snd_gf1_dma_ack()
17 	snd_gf1_write8(gus, SNDRV_GF1_GB_DRAM_DMA_CONTROL, 0x00);  in snd_gf1_dma_ack()
18 	snd_gf1_look8(gus, SNDRV_GF1_GB_DRAM_DMA_CONTROL);  in snd_gf1_dma_ack()
19 	spin_unlock_irqrestore(&gus->reg_lock, flags);  in snd_gf1_dma_ack()
22 static void snd_gf1_dma_program(struct snd_gus_card * gus,  in snd_gf1_dma_program()  argument
36 	if (gus->gf1.dma1 > 3) {  in snd_gf1_dma_program()
37 		if (gus->gf1.enh_mode) {  in snd_gf1_dma_program()
58 	if (gus->gf1.dma1 > 3) {  in snd_gf1_dma_program()
63 	snd_gf1_dma_ack(gus);  in snd_gf1_dma_program()
64 …snd_dma_program(gus->gf1.dma1, buf_addr, count, dma_cmd & SNDRV_GF1_DMA_READ ? DMA_MODE_READ : DMA…  in snd_gf1_dma_program()
69 	spin_lock_irqsave(&gus->reg_lock, flags);  in snd_gf1_dma_program()
70 	if (gus->gf1.enh_mode) {  in snd_gf1_dma_program()
72 		snd_gf1_write16(gus, SNDRV_GF1_GW_DRAM_DMA_LOW, (unsigned short) (address >> 4));  in snd_gf1_dma_program()
73 		snd_gf1_write8(gus, SNDRV_GF1_GB_DRAM_DMA_HIGH, (unsigned char) address_high);  in snd_gf1_dma_program()
75 		snd_gf1_write16(gus, SNDRV_GF1_GW_DRAM_DMA_LOW, (unsigned short) (address >> 4));  in snd_gf1_dma_program()
76 	snd_gf1_write8(gus, SNDRV_GF1_GB_DRAM_DMA_CONTROL, dma_cmd);  in snd_gf1_dma_program()
77 	spin_unlock_irqrestore(&gus->reg_lock, flags);  in snd_gf1_dma_program()
80 static struct snd_gf1_dma_block *snd_gf1_dma_next_block(struct snd_gus_card * gus)  in snd_gf1_dma_next_block()  argument
85 	if (gus->gf1.dma_data_pcm) {  in snd_gf1_dma_next_block()
86 		block = gus->gf1.dma_data_pcm;  in snd_gf1_dma_next_block()
87 		if (gus->gf1.dma_data_pcm_last == block) {  in snd_gf1_dma_next_block()
88 			gus->gf1.dma_data_pcm =  in snd_gf1_dma_next_block()
89 			gus->gf1.dma_data_pcm_last = NULL;  in snd_gf1_dma_next_block()
91 			gus->gf1.dma_data_pcm = block->next;  in snd_gf1_dma_next_block()
93 	} else if (gus->gf1.dma_data_synth) {  in snd_gf1_dma_next_block()
94 		block = gus->gf1.dma_data_synth;  in snd_gf1_dma_next_block()
95 		if (gus->gf1.dma_data_synth_last == block) {  in snd_gf1_dma_next_block()
96 			gus->gf1.dma_data_synth =  in snd_gf1_dma_next_block()
97 			gus->gf1.dma_data_synth_last = NULL;  in snd_gf1_dma_next_block()
99 			gus->gf1.dma_data_synth = block->next;  in snd_gf1_dma_next_block()
105 		gus->gf1.dma_ack = block->ack;  in snd_gf1_dma_next_block()
106 		gus->gf1.dma_private_data = block->private_data;  in snd_gf1_dma_next_block()
112 static void snd_gf1_dma_interrupt(struct snd_gus_card * gus)  in snd_gf1_dma_interrupt()  argument
116 	snd_gf1_dma_ack(gus);  in snd_gf1_dma_interrupt()
117 	if (gus->gf1.dma_ack)  in snd_gf1_dma_interrupt()
118 		gus->gf1.dma_ack(gus, gus->gf1.dma_private_data);  in snd_gf1_dma_interrupt()
119 	spin_lock(&gus->dma_lock);  in snd_gf1_dma_interrupt()
120 	if (gus->gf1.dma_data_pcm == NULL &&  in snd_gf1_dma_interrupt()
121 	    gus->gf1.dma_data_synth == NULL) {  in snd_gf1_dma_interrupt()
122 	    	gus->gf1.dma_ack = NULL;  in snd_gf1_dma_interrupt()
123 		gus->gf1.dma_flags &= ~SNDRV_GF1_DMA_TRIGGER;  in snd_gf1_dma_interrupt()
124 		spin_unlock(&gus->dma_lock);  in snd_gf1_dma_interrupt()
127 	block = snd_gf1_dma_next_block(gus);  in snd_gf1_dma_interrupt()
128 	spin_unlock(&gus->dma_lock);  in snd_gf1_dma_interrupt()
131 	snd_gf1_dma_program(gus, block->addr, block->buf_addr, block->count, (unsigned short) block->cmd);  in snd_gf1_dma_interrupt()
140 int snd_gf1_dma_init(struct snd_gus_card * gus)  in snd_gf1_dma_init()  argument
142 	mutex_lock(&gus->dma_mutex);  in snd_gf1_dma_init()
143 	gus->gf1.dma_shared++;  in snd_gf1_dma_init()
144 	if (gus->gf1.dma_shared > 1) {  in snd_gf1_dma_init()
145 		mutex_unlock(&gus->dma_mutex);  in snd_gf1_dma_init()
148 	gus->gf1.interrupt_handler_dma_write = snd_gf1_dma_interrupt;  in snd_gf1_dma_init()
149 	gus->gf1.dma_data_pcm =   in snd_gf1_dma_init()
150 	gus->gf1.dma_data_pcm_last =  in snd_gf1_dma_init()
151 	gus->gf1.dma_data_synth =   in snd_gf1_dma_init()
152 	gus->gf1.dma_data_synth_last = NULL;  in snd_gf1_dma_init()
153 	mutex_unlock(&gus->dma_mutex);  in snd_gf1_dma_init()
157 int snd_gf1_dma_done(struct snd_gus_card * gus)  in snd_gf1_dma_done()  argument
161 	mutex_lock(&gus->dma_mutex);  in snd_gf1_dma_done()
162 	gus->gf1.dma_shared--;  in snd_gf1_dma_done()
163 	if (!gus->gf1.dma_shared) {  in snd_gf1_dma_done()
164 		snd_dma_disable(gus->gf1.dma1);  in snd_gf1_dma_done()
165 		snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_WRITE);  in snd_gf1_dma_done()
166 		snd_gf1_dma_ack(gus);  in snd_gf1_dma_done()
167 		while ((block = gus->gf1.dma_data_pcm)) {  in snd_gf1_dma_done()
168 			gus->gf1.dma_data_pcm = block->next;  in snd_gf1_dma_done()
171 		while ((block = gus->gf1.dma_data_synth)) {  in snd_gf1_dma_done()
172 			gus->gf1.dma_data_synth = block->next;  in snd_gf1_dma_done()
175 		gus->gf1.dma_data_pcm_last =  in snd_gf1_dma_done()
176 		gus->gf1.dma_data_synth_last = NULL;  in snd_gf1_dma_done()
178 	mutex_unlock(&gus->dma_mutex);  in snd_gf1_dma_done()
182 int snd_gf1_dma_transfer_block(struct snd_gus_card * gus,  in snd_gf1_dma_transfer_block()  argument
202 		    (long)gus->gf1.dma_data_pcm_last);  in snd_gf1_dma_transfer_block()
204 		    (long)gus->gf1.dma_data_pcm);  in snd_gf1_dma_transfer_block()
206 	spin_lock_irqsave(&gus->dma_lock, flags);  in snd_gf1_dma_transfer_block()
208 		if (gus->gf1.dma_data_synth_last) {  in snd_gf1_dma_transfer_block()
209 			gus->gf1.dma_data_synth_last->next = block;  in snd_gf1_dma_transfer_block()
210 			gus->gf1.dma_data_synth_last = block;  in snd_gf1_dma_transfer_block()
212 			gus->gf1.dma_data_synth =   in snd_gf1_dma_transfer_block()
213 			gus->gf1.dma_data_synth_last = block;  in snd_gf1_dma_transfer_block()
216 		if (gus->gf1.dma_data_pcm_last) {  in snd_gf1_dma_transfer_block()
217 			gus->gf1.dma_data_pcm_last->next = block;  in snd_gf1_dma_transfer_block()
218 			gus->gf1.dma_data_pcm_last = block;  in snd_gf1_dma_transfer_block()
220 			gus->gf1.dma_data_pcm =   in snd_gf1_dma_transfer_block()
221 			gus->gf1.dma_data_pcm_last = block;  in snd_gf1_dma_transfer_block()
224 	if (!(gus->gf1.dma_flags & SNDRV_GF1_DMA_TRIGGER)) {  in snd_gf1_dma_transfer_block()
225 		gus->gf1.dma_flags |= SNDRV_GF1_DMA_TRIGGER;  in snd_gf1_dma_transfer_block()
226 		block = snd_gf1_dma_next_block(gus);  in snd_gf1_dma_transfer_block()
227 		spin_unlock_irqrestore(&gus->dma_lock, flags);  in snd_gf1_dma_transfer_block()
230 		snd_gf1_dma_program(gus, block->addr, block->buf_addr, block->count, (unsigned short) block->cmd);  in snd_gf1_dma_transfer_block()
234 	spin_unlock_irqrestore(&gus->dma_lock, flags);  in snd_gf1_dma_transfer_block()