39 int __init isa_dma_add(unsigned int chan, dma_t *dma)  in isa_dma_add()  argument
41 	if (!dma->d_ops)  in isa_dma_add()
44 	sg_init_table(&dma->buf, 1);  in isa_dma_add()
48 	dma_chan[chan] = dma;  in isa_dma_add()
59 	dma_t *dma = dma_channel(chan);  in request_dma()  local
62 	if (!dma)  in request_dma()
65 	if (xchg(&dma->lock, 1) != 0)  in request_dma()
68 	dma->device_id = device_id;  in request_dma()
69 	dma->active    = 0;  in request_dma()
70 	dma->invalid   = 1;  in request_dma()
73 	if (dma->d_ops->request)  in request_dma()
74 		ret = dma->d_ops->request(chan, dma);  in request_dma()
77 		xchg(&dma->lock, 0);  in request_dma()
97 	dma_t *dma = dma_channel(chan);  in free_dma()  local
99 	if (!dma)  in free_dma()
102 	if (dma->active) {  in free_dma()
104 		dma->d_ops->disable(chan, dma);  in free_dma()
105 		dma->active = 0;  in free_dma()
108 	if (xchg(&dma->lock, 0) != 0) {  in free_dma()
109 		if (dma->d_ops->free)  in free_dma()
110 			dma->d_ops->free(chan, dma);  in free_dma()
126 	dma_t *dma = dma_channel(chan);  in set_dma_sg()  local
128 	if (dma->active)  in set_dma_sg()
131 	dma->sg = sg;  in set_dma_sg()
132 	dma->sgcount = nr_sg;  in set_dma_sg()
133 	dma->invalid = 1;  in set_dma_sg()
143 	dma_t *dma = dma_channel(chan);  in __set_dma_addr()  local
145 	if (dma->active)  in __set_dma_addr()
148 	dma->sg = NULL;  in __set_dma_addr()
149 	dma->addr = addr;  in __set_dma_addr()
150 	dma->invalid = 1;  in __set_dma_addr()
160 	dma_t *dma = dma_channel(chan);  in set_dma_count()  local
162 	if (dma->active)  in set_dma_count()
165 	dma->sg = NULL;  in set_dma_count()
166 	dma->count = count;  in set_dma_count()
167 	dma->invalid = 1;  in set_dma_count()
175 	dma_t *dma = dma_channel(chan);  in set_dma_mode()  local
177 	if (dma->active)  in set_dma_mode()
180 	dma->dma_mode = mode;  in set_dma_mode()
181 	dma->invalid = 1;  in set_dma_mode()
189 	dma_t *dma = dma_channel(chan);  in enable_dma()  local
191 	if (!dma->lock)  in enable_dma()
194 	if (dma->active == 0) {  in enable_dma()
195 		dma->active = 1;  in enable_dma()
196 		dma->d_ops->enable(chan, dma);  in enable_dma()
210 	dma_t *dma = dma_channel(chan);  in disable_dma()  local
212 	if (!dma->lock)  in disable_dma()
215 	if (dma->active == 1) {  in disable_dma()
216 		dma->active = 0;  in disable_dma()
217 		dma->d_ops->disable(chan, dma);  in disable_dma()
232 	dma_t *dma = dma_channel(chan);  in dma_channel_active()  local
233 	return dma->active;  in dma_channel_active()
245 	dma_t *dma = dma_channel(chan);  in set_dma_speed()  local
248 	if (dma->d_ops->setspeed)  in set_dma_speed()
249 		ret = dma->d_ops->setspeed(chan, dma, cycle_ns);  in set_dma_speed()
250 	dma->speed = ret;  in set_dma_speed()
256 	dma_t *dma = dma_channel(chan);  in get_dma_residue()  local
259 	if (dma->d_ops->residue)  in get_dma_residue()
260 		ret = dma->d_ops->residue(chan, dma);  in get_dma_residue()
272 		dma_t *dma = dma_channel(i);  in proc_dma_show()  local
273 		if (dma && dma->lock)  in proc_dma_show()
274 			seq_printf(m, "%2d: %s\n", i, dma->device_id);  in proc_dma_show()