ata_dbdma.c (360bf6787a0550ebf392950f85d166a37c5471f4) ata_dbdma.c (066f913a94b134b6d5e32b6af88f297c7da9c031)
1/*-
2 * Copyright 2008 by Nathan Whitehorn. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.

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199 }
200 return 0;
201}
202
203static int
204ata_dbdma_load(struct ata_request *request, void *addr, int *entries)
205{
206 struct ata_channel *ch = device_get_softc(request->parent);
1/*-
2 * Copyright 2008 by Nathan Whitehorn. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.

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199 }
200 return 0;
201}
202
203static int
204ata_dbdma_load(struct ata_request *request, void *addr, int *entries)
205{
206 struct ata_channel *ch = device_get_softc(request->parent);
207 struct ata_device *atadev = device_get_softc(request->dev);
208 struct ata_dbdma_dmaload_args args;
209
210 int error;
211
212 args.sc = device_get_softc(request->parent);
213 args.write = !(request->flags & ATA_R_READ);
214
215 if (!request->bytecount) {

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225 }
226 if (request->bytecount > ch->dma.max_iosize) {
227 device_printf(request->dev,
228 "FAILURE - oversized DMA transfer attempt %d > %d\n",
229 request->bytecount, ch->dma.max_iosize);
230 return EIO;
231 }
232
207 struct ata_dbdma_dmaload_args args;
208
209 int error;
210
211 args.sc = device_get_softc(request->parent);
212 args.write = !(request->flags & ATA_R_READ);
213
214 if (!request->bytecount) {

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224 }
225 if (request->bytecount > ch->dma.max_iosize) {
226 device_printf(request->dev,
227 "FAILURE - oversized DMA transfer attempt %d > %d\n",
228 request->bytecount, ch->dma.max_iosize);
229 return EIO;
230 }
231
233 request->dma = &ch->dma.slot[atadev->unit];
232 request->dma = &ch->dma.slot[0];
234
235 if ((error = bus_dmamap_load(request->dma->data_tag,
236 request->dma->data_map, request->data, request->bytecount,
237 &ata_dbdma_setprd, &args, BUS_DMA_NOWAIT))) {
238 device_printf(request->dev, "FAILURE - load data\n");
239 goto error;
240 }
241

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234 if ((error = bus_dmamap_load(request->dma->data_tag,
235 request->dma->data_map, request->data, request->bytecount,
236 &ata_dbdma_setprd, &args, BUS_DMA_NOWAIT))) {
237 device_printf(request->dev, "FAILURE - load data\n");
238 goto error;
239 }
240

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