1 // SPDX-License-Identifier: GPL-2.0
16 #include <asm/pci-functions.h>
36  * - AH: return code
51  * We could make the 0xe0000-0x100000 range rox, but this can break
61 	set_memory_x(PAGE_OFFSET + BIOS_BEGIN, (BIOS_END - BIOS_BEGIN) >> PAGE_SHIFT);  in set_bios_x()
69  * 	Standard BIOS 32-bit Service Directory Proposal
83 		unsigned char reserved[5]; 	/* Must be zero */
130 			printk(KERN_WARNING "bios32_service(0x%lx): returned 0x%x -- BIOS bug!\n",  in bios32_service()
159 			"xor %%ah, %%ah\n"  in check_pcibios()
197 			 unsigned int devfn, int reg, int len, u32 *value)  in pci_bios_read()  argument
205 	if (!value || (bus > 255) || (devfn > 255) || (reg > 255))  in pci_bios_read()
206 		return -EINVAL;  in pci_bios_read()
226 		"xor %%ah, %%ah\n"  in pci_bios_read()
232 		  "D" ((long)reg),  in pci_bios_read()
235 	 * Zero-extend the result beyond 8 or 16 bits, do not trust the  in pci_bios_read()
247 			  unsigned int devfn, int reg, int len, u32 value)  in pci_bios_write()  argument
255 	if ((bus > 255) || (devfn > 255) || (reg > 255))   in pci_bios_write()
256 		return -EINVAL;  in pci_bios_write()
274 		"xor %%ah, %%ah\n"  in pci_bios_write()
280 		  "D" ((long)reg),  in pci_bios_write()
318 		if (get_kernel_nofault(sig, &check->fields.signature))  in pci_find_bios()
321 		if (check->fields.signature != BIOS32_SIGNATURE)  in pci_find_bios()
323 		length = check->fields.length * 16;  in pci_find_bios()
328 			sum += check->chars[i];  in pci_find_bios()
331 		if (check->fields.revision != 0) {  in pci_find_bios()
333 				check->fields.revision, check);  in pci_find_bios()
337 		if (check->fields.entry >= 0x100000) {  in pci_find_bios()
342 			unsigned long bios32_entry = check->fields.entry;  in pci_find_bios()
389 		"xor %%ah, %%ah\n"  in pcibios_get_irq_routing_table()
408 			rt->size = opt.size + sizeof(struct irq_routing_table);  in pcibios_get_irq_routing_table()
409 			rt->exclusive_irqs = map;  in pcibios_get_irq_routing_table()
410 			memcpy(rt->slots, (void *) page, opt.size);  in pcibios_get_irq_routing_table()
425 		"xor %%ah, %%ah\n"  in pcibios_set_irq_routing()
429 		  "b" ((dev->bus->number << 8) | dev->devfn),  in pcibios_set_irq_routing()