1 // SPDX-License-Identifier: GPL-2.0-only
3  * Written by Pekka Paalanen, 2008-2009 <[email protected]>
16 				"(or 8 MB if read_far is non-zero).");
20 MODULE_PARM_DESC(read_far, " Offset of a 32-bit read within 8 MB "
33 static void do_write_test(void __iomem *p)  in do_write_test()  argument
39 	for (i = 0; i < 256; i++)  in do_write_test()
40 		iowrite8(i, p + i);  in do_write_test()
43 		iowrite16(v16(i), p + i);  in do_write_test()
46 		iowrite32(v32(i), p + i);  in do_write_test()
49 static void do_read_test(void __iomem *p)  in do_read_test()  argument
56 	for (i = 0; i < 256; i++)  in do_read_test()
57 		if (ioread8(p + i) != i)  in do_read_test()
61 		if (ioread16(p + i) != v16(i))  in do_read_test()
65 		if (ioread32(p + i) != v32(i))  in do_read_test()
68 	mmiotrace_printk("Read errors: 8-bit %d, 16-bit %d, 32-bit %d.\n",  in do_read_test()
72 static void do_read_far_test(void __iomem *p)  in do_read_far_test()  argument
77 	ioread32(p + read_far);  in do_read_far_test()
82 	void __iomem *p = ioremap(mmio_address, size);  in do_test()  local
83 	if (!p) {  in do_test()
87 	mmiotrace_printk("ioremap returned %p.\n", p);  in do_test()
88 	do_write_test(p);  in do_test()
89 	do_read_test(p);  in do_test()
90 	if (read_far && read_far < size - 4)  in do_test()
91 		do_read_far_test(p);  in do_test()
92 	iounmap(p);  in do_test()
103 	void __iomem *p;  in do_test_bulk_ioremapping()  local
107 		p = ioremap(mmio_address, PAGE_SIZE);  in do_test_bulk_ioremapping()
108 		if (p)  in do_test_bulk_ioremapping()
109 			iounmap(p);  in do_test_bulk_ioremapping()
127 		return -ENXIO;  in init()