mtd/maps/esb2rom.c

118 static void esb2rom_cleanup(struct esb2rom_window *window)
123 	/* Disable writes through the rom window */
124 	pci_read_config_byte(window->pdev, BIOS_CNTL, &byte);
125 	pci_write_config_byte(window->pdev, BIOS_CNTL,
129 	list_for_each_entry_safe(map, scratch, &window->maps, list) {
137 	if (window->rsrc.parent)
138 		release_resource(&window->rsrc);
139 	if (window->virt) {
140 		iounmap(window->virt);
141 		window->virt = NULL;
142 		window->phys = 0;
143 		window->size = 0;
145 	pci_dev_put(window->pdev);
152 	struct esb2rom_window *window = &esb2rom_window;
165 	 * Also you can page firmware hubs if an 8MiB window isn't enough
168 	window->pdev = pci_dev_get(pdev);
170 	/* RLG:  experiment 2.  Force the window registers to the widest values */
186 	/* Find a region continuous to the end of the ROM window  */
187 	window->phys = 0;
192 		window->phys = 0xff400000;
194 		window->phys = 0xff500000;
196 		window->phys = 0xff600000;
198 		window->phys = 0xFF700000;
200 		window->phys = 0xffc00000;
202 		window->phys = 0xffc80000;
204 		window->phys = 0xffd00000;
206 		window->phys = 0xffd80000;
208 		window->phys = 0xffe00000;
210 		window->phys = 0xffe80000;
212 		window->phys = 0xfff00000;
214 		window->phys = 0xfff80000;
216 	if (window->phys == 0) {
217 		printk(KERN_ERR MOD_NAME ": Rom window is closed\n");
222 	window->phys -= 0x400000UL;
223 	window->size = (0xffffffffUL - window->phys) + 1UL;
225 	/* Enable writes through the rom window */
237 	 * Try to reserve the window mem region.  If this fails then
238 	 * it is likely due to the window being "reserved" by the BIOS.
240 	window->rsrc.name = MOD_NAME;
241 	window->rsrc.start = window->phys;
242 	window->rsrc.end   = window->phys + window->size - 1;
243 	window->rsrc.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
244 	if (request_resource(&iomem_resource, &window->rsrc)) {
245 		window->rsrc.parent = NULL;
248 			__func__, &window->rsrc);
252 	window->virt = ioremap(window->phys, window->size);
253 	if (!window->virt) {
255 			window->phys, window->size);
260 	map_top = window->phys;
261 	if ((window->phys & 0x3fffff) != 0) {
263 		map_top = window->phys + 0x400000;
289 		offset = map_top - window->phys;
291 			(((unsigned long)(window->virt)) + offset);
325 				" rom(%llu) larger than window(%lu). fixing...\n",
329 		if (window->rsrc.parent) {
339 			if (request_resource(&window->rsrc, &map->rsrc)) {
347 		map->map.virt = window->virt;
348 		map->map.phys = window->phys;
365 		list_add(&map->list, &window->maps);
374 	if (list_empty(&window->maps)) {
375 		esb2rom_cleanup(window);
383 	struct esb2rom_window *window = &esb2rom_window;
384 	esb2rom_cleanup(window);