dma/bestcomm/bestcomm.c

37 struct bcom_engine *bcom_eng = NULL;
38 EXPORT_SYMBOL_GPL(bcom_eng);	/* needed for inline functions */
53 	if (!bcom_eng)
57 	spin_lock(&bcom_eng->lock);
60 		if (!bcom_eng->tdt[i].stop) {	/* we use stop as a marker */
61 			bcom_eng->tdt[i].stop = 0xfffffffful; /* dummy addr */
66 	spin_unlock(&bcom_eng->lock);
81 	tsk->irq = irq_of_parse_and_map(bcom_eng->ofnode, tsk->tasknum);
112 	bcom_eng->tdt[tasknum].stop = 0;
125 	bcom_eng->tdt[tsk->tasknum].start = 0;
126 	bcom_eng->tdt[tsk->tasknum].stop  = 0;
158 	tdt = &bcom_eng->tdt[task];
286 	bcom_eng->tdt = bcom_sram_alloc(tdt_size, sizeof(u32), &tdt_pa);
287 	bcom_eng->ctx = bcom_sram_alloc(ctx_size, BCOM_CTX_ALIGN, &ctx_pa);
288 	bcom_eng->var = bcom_sram_alloc(var_size, BCOM_VAR_ALIGN, &var_pa);
289 	bcom_eng->fdt = bcom_sram_alloc(fdt_size, BCOM_FDT_ALIGN, &fdt_pa);
291 	if (!bcom_eng->tdt || !bcom_eng->ctx || !bcom_eng->var || !bcom_eng->fdt) {
294 		bcom_sram_free(bcom_eng->tdt);
295 		bcom_sram_free(bcom_eng->ctx);
296 		bcom_sram_free(bcom_eng->var);
297 		bcom_sram_free(bcom_eng->fdt);
302 	memset_io(bcom_eng->tdt, 0x00, tdt_size);
303 	memset_io(bcom_eng->ctx, 0x00, ctx_size);
304 	memset_io(bcom_eng->var, 0x00, var_size);
305 	memset_io(bcom_eng->fdt, 0x00, fdt_size);
308 	memcpy_toio(&bcom_eng->fdt[48], fdt_ops, sizeof(fdt_ops));
313 		out_be16(&bcom_eng->regs->tcr[task], 0);
314 		out_8(&bcom_eng->regs->ipr[task], 0);
316 		bcom_eng->tdt[task].context	= ctx_pa;
317 		bcom_eng->tdt[task].var	= var_pa;
318 		bcom_eng->tdt[task].fdt	= fdt_pa;
324 	out_be32(&bcom_eng->regs->taskBar, tdt_pa);
327 	out_8(&bcom_eng->regs->ipr[BCOM_INITIATOR_ALWAYS], BCOM_IPR_ALWAYS);
334 	spin_lock_init(&bcom_eng->lock);
347 		out_be16(&bcom_eng->regs->tcr[task], 0);
348 		out_8(&bcom_eng->regs->ipr[task], 0);
351 	out_be32(&bcom_eng->regs->taskBar, 0ul);
354 	bcom_sram_free(bcom_eng->tdt);
355 	bcom_sram_free(bcom_eng->ctx);
356 	bcom_sram_free(bcom_eng->var);
357 	bcom_sram_free(bcom_eng->fdt);
396 	bcom_eng = kzalloc(sizeof(struct bcom_engine), GFP_KERNEL);
397 	if (!bcom_eng) {
403 	bcom_eng->ofnode = op->dev.of_node;
421 	bcom_eng->regs_base = res_bcom.start;
422 	bcom_eng->regs = ioremap(res_bcom.start, sizeof(struct mpc52xx_sdma));
423 	if (!bcom_eng->regs) {
437 		(long)bcom_eng->regs_base);
443 	iounmap(bcom_eng->regs);
447 	kfree(bcom_eng);
467 	iounmap(bcom_eng->regs);
468 	release_mem_region(bcom_eng->regs_base, sizeof(struct mpc52xx_sdma));
471 	of_node_put(bcom_eng->ofnode);
474 	kfree(bcom_eng);
475 	bcom_eng = NULL;