---

yaml
---
r: 245724
b: refs/heads/master
c: 5d94e81
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 45bb1674b976ef81429c1e42de05844b49d45dea
+refs/heads/master: 5d94e81f69d4b1d1102d3ab557ce0a817c11fbbb

trunk/arch/x86/include/asm/probe_roms.h

@@ -0,0 +1,8 @@
+#ifndef _PROBE_ROMS_H_
+#define _PROBE_ROMS_H_
+struct pci_dev;
+
+extern void __iomem *pci_map_biosrom(struct pci_dev *pdev);
+extern void pci_unmap_biosrom(void __iomem *rom);
+extern size_t pci_biosrom_size(struct pci_dev *pdev);
+#endif

trunk/arch/x86/include/asm/setup.h

@@ -104,10 +104,10 @@ void *extend_brk(size_t size, size_t align);
 	type *name;					\
 	RESERVE_BRK(name, sizeof(type) * entries)
 
+extern void probe_roms(void);
 #ifdef __i386__
 
 void __init i386_start_kernel(void);
-extern void probe_roms(void);
 
 #else
 void __init x86_64_start_kernel(char *real_mode);

trunk/arch/x86/kernel/Makefile

@@ -36,7 +36,7 @@ obj-y			+= traps.o irq.o irq_$(BITS).o dumpstack_$(BITS).o
 obj-y			+= time.o ioport.o ldt.o dumpstack.o
 obj-y			+= setup.o x86_init.o i8259.o irqinit.o jump_label.o
 obj-$(CONFIG_IRQ_WORK)  += irq_work.o
-obj-$(CONFIG_X86_32)	+= probe_roms_32.o
+obj-y			+= probe_roms.o
 obj-$(CONFIG_X86_32)	+= sys_i386_32.o i386_ksyms_32.o
 obj-$(CONFIG_X86_64)	+= sys_x86_64.o x8664_ksyms_64.o
 obj-$(CONFIG_X86_64)	+= syscall_64.o vsyscall_64.o

trunk/arch/x86/kernel/head32.c

@@ -23,7 +23,6 @@
 static void __init i386_default_early_setup(void)
 {
 	/* Initialize 32bit specific setup functions */
-	x86_init.resources.probe_roms = probe_roms;
 	x86_init.resources.reserve_resources = i386_reserve_resources;
 	x86_init.mpparse.setup_ioapic_ids = setup_ioapic_ids_from_mpc;
 

trunk/arch/x86/kernel/probe_roms_32.c → trunk/arch/x86/kernel/probe_roms.c

@@ -73,6 +73,107 @@ static struct resource video_rom_resource = {
 	.flags	= IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
 };
 
+/* does this oprom support the given pci device, or any of the devices
+ * that the driver supports?
+ */
+static bool match_id(struct pci_dev *pdev, unsigned short vendor, unsigned short device)
+{
+	struct pci_driver *drv = pdev->driver;
+	const struct pci_device_id *id;
+
+	if (pdev->vendor == vendor && pdev->device == device)
+		return true;
+
+	for (id = drv ? drv->id_table : NULL; id && id->vendor; id++)
+		if (id->vendor == vendor && id->device == device)
+			break;
+
+	return id && id->vendor;
+}
+
+static bool probe_list(struct pci_dev *pdev, unsigned short vendor,
+		       const unsigned char *rom_list)
+{
+	unsigned short device;
+
+	do {
+		if (probe_kernel_address(rom_list, device) != 0)
+			device = 0;
+
+		if (device && match_id(pdev, vendor, device))
+			break;
+
+		rom_list += 2;
+	} while (device);
+
+	return !!device;
+}
+
+static struct resource *find_oprom(struct pci_dev *pdev)
+{
+	struct resource *oprom = NULL;
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(adapter_rom_resources); i++) {
+		struct resource *res = &adapter_rom_resources[i];
+		unsigned short offset, vendor, device, list, rev;
+		const unsigned char *rom;
+
+		if (res->end == 0)
+			break;
+
+		rom = isa_bus_to_virt(res->start);
+		if (probe_kernel_address(rom + 0x18, offset) != 0)
+			continue;
+
+		if (probe_kernel_address(rom + offset + 0x4, vendor) != 0)
+			continue;
+
+		if (probe_kernel_address(rom + offset + 0x6, device) != 0)
+			continue;
+
+		if (match_id(pdev, vendor, device)) {
+			oprom = res;
+			break;
+		}
+
+		if (probe_kernel_address(rom + offset + 0x8, list) == 0 &&
+		    probe_kernel_address(rom + offset + 0xc, rev) == 0 &&
+		    rev >= 3 && list &&
+		    probe_list(pdev, vendor, rom + offset + list)) {
+			oprom = res;
+			break;
+		}
+	}
+
+	return oprom;
+}
+
+void *pci_map_biosrom(struct pci_dev *pdev)
+{
+	struct resource *oprom = find_oprom(pdev);
+
+	if (!oprom)
+		return NULL;
+
+	return ioremap(oprom->start, resource_size(oprom));
+}
+EXPORT_SYMBOL(pci_map_biosrom);
+
+void pci_unmap_biosrom(void __iomem *image)
+{
+	iounmap(image);
+}
+EXPORT_SYMBOL(pci_unmap_biosrom);
+
+size_t pci_biosrom_size(struct pci_dev *pdev)
+{
+	struct resource *oprom = find_oprom(pdev);
+
+	return oprom ? resource_size(oprom) : 0;
+}
+EXPORT_SYMBOL(pci_biosrom_size);
+
 #define ROMSIGNATURE 0xaa55
 
 static int __init romsignature(const unsigned char *rom)

trunk/arch/x86/kernel/x86_init.c

@@ -35,7 +35,7 @@ void iommu_shutdown_noop(void) { }
 struct x86_init_ops x86_init __initdata = {
 
 	.resources = {
-		.probe_roms		= x86_init_noop,
+		.probe_roms		= probe_roms,
 		.reserve_resources	= reserve_standard_io_resources,
 		.memory_setup		= default_machine_specific_memory_setup,
 	},