2  * Linux ARCnet driver - "RIM I" (entirely mem-mapped) cards
4  * Written 1994-1999 by Avery Pennarun.
5  * Written 1999-2000 by Martin Mares <[email protected]>.
39 #include <linux/io.h>
63 /* We cannot probe for a RIM I card; one reason is I don't know how to reset
70 		pr_info("%s\n", "RIM I (entirely mem-mapped) support");  in arcrimi_probe()
71 		pr_info("E-mail me if you actually test the RIM I driver, please!\n");  in arcrimi_probe()
72 		pr_info("Given: node %02Xh, shmem %lXh, irq %d\n",  in arcrimi_probe()
73 			dev->dev_addr[0], dev->mem_start, dev->irq);  in arcrimi_probe()
76 	if (dev->mem_start <= 0 || dev->irq <= 0) {  in arcrimi_probe()
78 			pr_err("No autoprobe for RIM I; you must specify the shmem and irq!\n");  in arcrimi_probe()
79 		return -ENODEV;  in arcrimi_probe()
81 	if (dev->dev_addr[0] == 0) {  in arcrimi_probe()
83 			pr_err("You need to specify your card's station ID!\n");  in arcrimi_probe()
84 		return -ENODEV;  in arcrimi_probe()
91 	if (!request_mem_region(dev->mem_start, MIRROR_SIZE, "arcnet (90xx)")) {  in arcrimi_probe()
93 			pr_notice("Card memory already allocated\n");  in arcrimi_probe()
94 		return -ENODEV;  in arcrimi_probe()
102 	int res = -1;  in check_mirror()
105 		return -1;  in check_mirror()
131 	p = ioremap(dev->mem_start, MIRROR_SIZE);  in arcrimi_found()
133 		release_mem_region(dev->mem_start, MIRROR_SIZE);  in arcrimi_found()
134 		arc_printk(D_NORMAL, dev, "Can't ioremap\n");  in arcrimi_found()
135 		return -ENODEV;  in arcrimi_found()
139 	if (request_irq(dev->irq, arcnet_interrupt, 0, "arcnet (RIM I)", dev)) {  in arcrimi_found()
141 		release_mem_region(dev->mem_start, MIRROR_SIZE);  in arcrimi_found()
142 		arc_printk(D_NORMAL, dev, "Can't get IRQ %d!\n", dev->irq);  in arcrimi_found()
143 		return -ENODEV;  in arcrimi_found()
146 	shmem = dev->mem_start;  in arcrimi_found()
153 	/* guess the actual size of one "memory mirror" - the number of  in arcrimi_found()
159 	    check_mirror(shmem - MIRROR_SIZE, MIRROR_SIZE) == 0 &&  in arcrimi_found()
160 	    check_mirror(shmem - 2 * MIRROR_SIZE, MIRROR_SIZE) == 1)  in arcrimi_found()
163 	first_mirror = shmem - mirror_size;  in arcrimi_found()
165 		first_mirror -= mirror_size;  in arcrimi_found()
171 	last_mirror -= mirror_size;  in arcrimi_found()
173 	dev->mem_start = first_mirror;  in arcrimi_found()
174 	dev->mem_end = last_mirror + MIRROR_SIZE - 1;  in arcrimi_found()
179 	lp->card_name = "RIM I";  in arcrimi_found()
180 	lp->hw.command = arcrimi_command;  in arcrimi_found()
181 	lp->hw.status = arcrimi_status;  in arcrimi_found()
182 	lp->hw.intmask = arcrimi_setmask;  in arcrimi_found()
183 	lp->hw.reset = arcrimi_reset;  in arcrimi_found()
184 	lp->hw.owner = THIS_MODULE;  in arcrimi_found()
185 	lp->hw.copy_to_card = arcrimi_copy_to_card;  in arcrimi_found()
186 	lp->hw.copy_from_card = arcrimi_copy_from_card;  in arcrimi_found()
188 	/* re-reserve the memory region - arcrimi_probe() alloced this reqion  in arcrimi_found()
189 	 * but didn't know the real size.  Free that region and then re-get  in arcrimi_found()
195 	if (!request_mem_region(dev->mem_start,  in arcrimi_found()
196 				dev->mem_end - dev->mem_start + 1,  in arcrimi_found()
198 		arc_printk(D_NORMAL, dev, "Card memory already allocated\n");  in arcrimi_found()
202 	lp->mem_start = ioremap(dev->mem_start,  in arcrimi_found()
203 				dev->mem_end - dev->mem_start + 1);  in arcrimi_found()
204 	if (!lp->mem_start) {  in arcrimi_found()
205 		arc_printk(D_NORMAL, dev, "Can't remap device memory!\n");  in arcrimi_found()
210 	arcnet_set_addr(dev, arcnet_readb(lp->mem_start,  in arcrimi_found()
213 …c_printk(D_NORMAL, dev, "ARCnet RIM I: station %02Xh found at IRQ %d, ShMem %lXh (%ld*%d bytes)\n",  in arcrimi_found()
214 		   dev->dev_addr[0],  in arcrimi_found()
215 		   dev->irq, dev->mem_start,  in arcrimi_found()
216 		   (dev->mem_end - dev->mem_start + 1) / mirror_size,  in arcrimi_found()
226 	iounmap(lp->mem_start);  in arcrimi_found()
228 	release_mem_region(dev->mem_start, dev->mem_end - dev->mem_start + 1);  in arcrimi_found()
230 	free_irq(dev->irq, dev);  in arcrimi_found()
231 	return -EIO;  in arcrimi_found()
234 /* Do a hardware reset on the card, and set up necessary registers.
244 	void __iomem *ioaddr = lp->mem_start + 0x800;  in arcrimi_reset()
246 	arc_printk(D_INIT, dev, "Resetting %s (status=%02Xh)\n",  in arcrimi_reset()
247 		   dev->name, arcnet_readb(ioaddr, COM9026_REG_R_STATUS));  in arcrimi_reset()
250 		arcnet_writeb(TESTvalue, ioaddr, -0x800);	/* fake reset */  in arcrimi_reset()
253 	/* clear flags & end reset */  in arcrimi_reset()
257 	/* enable extended (512-byte) packets */  in arcrimi_reset()
267 	void __iomem *ioaddr = lp->mem_start + 0x800;  in arcrimi_setmask()
275 	void __iomem *ioaddr = lp->mem_start + 0x800;  in arcrimi_status()
283 	void __iomem *ioaddr = lp->mem_start + 0x800;  in arcrimi_command()
292 	void __iomem *memaddr = lp->mem_start + 0x800 + bufnum * 512 + offset;  in arcrimi_copy_to_card()
301 	void __iomem *memaddr = lp->mem_start + 0x800 + bufnum * 512 + offset;  in arcrimi_copy_from_card()
307 static int io;			/* use the insmod io= irq= node= options */  variable
312 module_param(io, int, 0);
326 		return -ENOMEM;  in arc_rimi_init()
331 	dev->mem_start = io;  in arc_rimi_init()
332 	dev->irq = irq;  in arc_rimi_init()
333 	if (dev->irq == 2)  in arc_rimi_init()
334 		dev->irq = 9;  in arc_rimi_init()
338 		return -EIO;  in arc_rimi_init()
351 	iounmap(lp->mem_start);  in arc_rimi_exit()
352 	release_mem_region(dev->mem_start, dev->mem_end - dev->mem_start + 1);  in arc_rimi_exit()
353 	free_irq(dev->irq, dev);  in arc_rimi_exit()
367 		pr_err("Too many arguments\n");  in arcrimi_setup()
375 	case 1:		/* IO address */  in arcrimi_setup()
376 		io = ints[1];  in arcrimi_setup()