1 /* SPDX-License-Identifier: GPL-2.0 */
2 /* parport.h: sparc64 specific parport initialization and dma.
20  * While sparc64 doesn't have an ISA DMA API, we provide something that looks
39 	struct ebus_dma_info info;  member
52 		return -EINVAL;  in request_dma()
54 		return -EBUSY;  in request_dma()
61 		printk(KERN_WARNING "Trying to free DMA%d\n", dmanr);  in free_dma()
65 		printk(KERN_WARNING "Trying to free free DMA%d\n", dmanr);  in free_dma()
72 	ebus_dma_enable(&sparc_ebus_dmas[dmanr].info, 1);  in enable_dma()
74 	if (ebus_dma_request(&sparc_ebus_dmas[dmanr].info,  in enable_dma()
82 	ebus_dma_enable(&sparc_ebus_dmas[dmanr].info, 0);  in disable_dma()
92 	ebus_dma_prepare(&sparc_ebus_dmas[dmanr].info, (mode != DMA_MODE_WRITE));  in set_dma_mode()
107 	return ebus_dma_residue(&sparc_ebus_dmas[dmanr].info);  in get_dma_residue()
112 	unsigned long base = op->resource[0].start;  in ecpp_probe()
113 	unsigned long config = op->resource[1].start;  in ecpp_probe()
114 	unsigned long d_base = op->resource[2].start;  in ecpp_probe()
120 	parent = op->dev.of_node->parent;  in ecpp_probe()
121 	if (of_node_name_eq(parent, "dma")) {  in ecpp_probe()
123 					  op->archdata.irqs[0], PARPORT_DMA_NOFIFO,  in ecpp_probe()
124 					  op->dev.parent->parent, 0);  in ecpp_probe()
126 			return -ENOMEM;  in ecpp_probe()
127 		dev_set_drvdata(&op->dev, p);  in ecpp_probe()
135 	err = -ENODEV;  in ecpp_probe()
139 	spin_lock_init(&sparc_ebus_dmas[slot].info.lock);  in ecpp_probe()
141 	d_len = (op->resource[2].end - d_base) + 1UL;  in ecpp_probe()
142 	sparc_ebus_dmas[slot].info.regs =  in ecpp_probe()
143 		of_ioremap(&op->resource[2], 0, d_len, "ECPP DMA");  in ecpp_probe()
145 	if (!sparc_ebus_dmas[slot].info.regs)  in ecpp_probe()
148 	sparc_ebus_dmas[slot].info.flags = 0;  in ecpp_probe()
149 	sparc_ebus_dmas[slot].info.callback = NULL;  in ecpp_probe()
150 	sparc_ebus_dmas[slot].info.client_cookie = NULL;  in ecpp_probe()
151 	sparc_ebus_dmas[slot].info.irq = 0xdeadbeef;  in ecpp_probe()
152 	strcpy(sparc_ebus_dmas[slot].info.name, "parport");  in ecpp_probe()
153 	if (ebus_dma_register(&sparc_ebus_dmas[slot].info))  in ecpp_probe()
156 	ebus_dma_irq_enable(&sparc_ebus_dmas[slot].info, 1);  in ecpp_probe()
173 				  op->archdata.irqs[0],  in ecpp_probe()
175 				  op->dev.parent,  in ecpp_probe()
177 	err = -ENOMEM;  in ecpp_probe()
181 	dev_set_drvdata(&op->dev, p);  in ecpp_probe()
186 	ebus_dma_irq_enable(&sparc_ebus_dmas[slot].info, 0);  in ecpp_probe()
187 	ebus_dma_unregister(&sparc_ebus_dmas[slot].info);  in ecpp_probe()
190 	of_iounmap(&op->resource[2], sparc_ebus_dmas[slot].info.regs, d_len);  in ecpp_probe()
201 	struct parport *p = dev_get_drvdata(&op->dev);  in ecpp_remove()
202 	int slot = p->dma;  in ecpp_remove()
207 		unsigned long d_base = op->resource[2].start;  in ecpp_remove()
210 		d_len = (op->resource[2].end - d_base) + 1UL;  in ecpp_remove()
212 		ebus_dma_irq_enable(&sparc_ebus_dmas[slot].info, 0);  in ecpp_remove()
213 		ebus_dma_unregister(&sparc_ebus_dmas[slot].info);  in ecpp_remove()
214 		of_iounmap(&op->resource[2],  in ecpp_remove()
215 			   sparc_ebus_dmas[slot].info.regs,  in ecpp_remove()
231 		.compatible = "ns87317-ecpp",