47 static int isa_get_dma_residue(unsigned int chan, dma_t *dma)  in isa_get_dma_residue()  argument
49 	unsigned int io_port = isa_dma_port[chan][ISA_DMA_COUNT];  in isa_get_dma_residue()
55 	return chan < 4 ? count : (count << 1);  in isa_get_dma_residue()
58 static void isa_enable_dma(unsigned int chan, dma_t *dma)  in isa_enable_dma()  argument
65 		mode = (chan & 3) | dma->dma_mode;  in isa_enable_dma()
100 		outb(address >> 16, isa_dma_port[chan][ISA_DMA_PGLO]);  in isa_enable_dma()
101 		outb(address >> 24, isa_dma_port[chan][ISA_DMA_PGHI]);  in isa_enable_dma()
103 		if (chan >= 4) {  in isa_enable_dma()
108 		outb(0, isa_dma_port[chan][ISA_DMA_CLRFF]);  in isa_enable_dma()
110 		outb(address, isa_dma_port[chan][ISA_DMA_ADDR]);  in isa_enable_dma()
111 		outb(address >> 8, isa_dma_port[chan][ISA_DMA_ADDR]);  in isa_enable_dma()
113 		outb(length, isa_dma_port[chan][ISA_DMA_COUNT]);  in isa_enable_dma()
114 		outb(length >> 8, isa_dma_port[chan][ISA_DMA_COUNT]);  in isa_enable_dma()
116 		outb(mode, isa_dma_port[chan][ISA_DMA_MODE]);  in isa_enable_dma()
119 	outb(chan & 3, isa_dma_port[chan][ISA_DMA_MASK]);  in isa_enable_dma()
122 static void isa_disable_dma(unsigned int chan, dma_t *dma)  in isa_disable_dma()  argument
124 	outb(chan | 4, isa_dma_port[chan][ISA_DMA_MASK]);  in isa_disable_dma()
175 		unsigned int chan, i;  in isa_init_dma()  local
177 		for (chan = 0; chan < 8; chan++) {  in isa_init_dma()
178 			isa_dma[chan].d_ops = &isa_dma_ops;  in isa_init_dma()
179 			isa_disable_dma(chan, NULL);  in isa_init_dma()
213 		for (chan = 0; chan < 8; chan++) {  in isa_init_dma()
214 			int ret = isa_dma_add(chan, &isa_dma[chan]);  in isa_init_dma()
217 				       chan, ret);  in isa_init_dma()