1 /* flash.c: Allow mmap access to the OBP Flash, for OBP updates.
33 } flash;  variable
44 	if (flash.read_base == flash.write_base) {  in flash_mmap()
45 		addr = flash.read_base;  in flash_mmap()
46 		size = flash.read_size;  in flash_mmap()
54 			addr = flash.read_base;  in flash_mmap()
55 			size = flash.read_size;  in flash_mmap()
57 			addr = flash.write_base;  in flash_mmap()
58 			size = flash.write_size;  in flash_mmap()
91 			if (file->f_pos > flash.read_size)  in flash_llseek()
92 				file->f_pos = flash.read_size;  in flash_llseek()
95 			file->f_pos = flash.read_size;  in flash_llseek()
112 	if (count > flash.read_size - p)  in flash_read()
113 		count = flash.read_size - p;  in flash_read()
116 		u8 data = upa_readb(flash.read_base + p + i);  in flash_read()
130 	if (test_and_set_bit(0, (void *)&flash.busy) != 0) {  in flash_open()
143 	flash.busy = 0;  in flash_release()
150 	/* no write to the Flash, use mmap
151 	 * and play flash dependent tricks.
161 static struct miscdevice flash_dev = { FLASH_MINOR, "flash", &flash_fops };
175 	flash.read_base = op->resource[0].start;  in flash_probe()
176 	flash.read_size = resource_size(&op->resource[0]);  in flash_probe()
178 		flash.write_base = op->resource[1].start;  in flash_probe()
179 		flash.write_size = resource_size(&op->resource[1]);  in flash_probe()
181 		flash.write_base = op->resource[0].start;  in flash_probe()
182 		flash.write_size = resource_size(&op->resource[0]);  in flash_probe()
184 	flash.busy = 0;  in flash_probe()
186 	printk(KERN_INFO "%s: OBP Flash, RD %lx[%lx] WR %lx[%lx]\n",  in flash_probe()
188 	       flash.read_base, flash.read_size,  in flash_probe()
189 	       flash.write_base, flash.write_size);  in flash_probe()
211 		.name = "flash",