1 // SPDX-License-Identifier: GPL-2.0-only
5  * (c) Copyright 2007 Hewlett-Packard Development Company, L.P.
27 	void *addr;  in map_mem()  local
31 	if (fd == -1) {  in map_mem()
33 		return -1;  in map_mem()
38 		if (rc == -1)  in map_mem()
42 	addr = mmap(NULL, length, PROT_READ|PROT_WRITE, MAP_SHARED, fd, offset);  in map_mem()
43 	if (addr == MAP_FAILED)  in map_mem()
47 		c = (int *) addr;  in map_mem()
48 		while (c < (int *) (addr + length))  in map_mem()
52 	rc = munmap(addr, length);  in map_mem()
53 	if (rc == -1) {  in map_mem()
55 		return -1;  in map_mem()
72 		return -1;  in scan_tree()
76 		name = namelist[i]->d_name;  in scan_tree()
91 …fprintf(stderr, "PASS: %s 0x%lx-0x%lx is %s\n", path2, offset, offset + length, touch ? "readable"…  in scan_tree()
93 				fprintf(stderr, "PASS: %s 0x%lx-0x%lx not mappable\n", path2, offset, offset + length);  in scan_tree()
95 				fprintf(stderr, "FAIL: %s 0x%lx-0x%lx not accessible\n", path2, offset, offset + length);  in scan_tree()
125 	if (fd == -1) {  in read_rom()
127 		return -1;  in read_rom()
134 		return -1;  in read_rom()
157 		return -1;  in scan_rom()
161 		name = namelist[i]->d_name;  in scan_rom()
177 			 * It's OK if the ROM is unreadable.  Maybe there  in scan_rom()
178 			 * is no ROM, or some other error occurred.  The  in scan_rom()
211 		fprintf(stderr, "PASS: /dev/mem 0x0-0xa0000 is readable\n");  in main()
213 		fprintf(stderr, "FAIL: /dev/mem 0x0-0xa0000 not accessible\n");  in main()
219 	 * up a non-responding card by just returning -1, but others will  in main()
223 		fprintf(stderr, "PASS: /dev/mem 0xa0000-0xc0000 is mappable\n");  in main()
225 		fprintf(stderr, "FAIL: /dev/mem 0xa0000-0xc0000 not accessible\n");  in main()
228 		fprintf(stderr, "PASS: /dev/mem 0xc0000-0x100000 is readable\n");  in main()
230 		fprintf(stderr, "FAIL: /dev/mem 0xc0000-0x100000 not accessible\n");  in main()
233 	 * Often you can map all the individual pieces above (0-0xA0000,  in main()
234 	 * 0xA0000-0xC0000, and 0xC0000-0x100000), but can't map the whole  in main()
241 		fprintf(stderr, "PASS: /dev/mem 0x0-0x100000 is mappable\n");  in main()
243 		fprintf(stderr, "PASS: /dev/mem 0x0-0x100000 not mappable\n");  in main()
245 		fprintf(stderr, "FAIL: /dev/mem 0x0-0x100000 not accessible\n");  in main()
252 	scan_rom("/sys/devices", "rom");  in main()