Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6

Documentation/kernel-parameters.txt

···
 		irqmask=0xMMMM		[IA-32] Set a bit mask of IRQs allowed to be assigned
 					automatically to PCI devices. You can make the kernel
 					exclude IRQs of your ISA cards this way.
+		pirqaddr=0xAAAAA	[IA-32] Specify the physical address
+					of the PIRQ table (normally generated
+					by the BIOS) if it is outside the
+					F0000h-100000h range.
 		lastbus=N		[IA-32] Scan all buses till bus #N. Can be useful
 					if the kernel is unable to find your secondary buses
 					and you want to tell it explicitly which ones they are.

arch/i386/kernel/acpi/boot.c

···
 #endif
 
 #ifdef CONFIG_PCI_MMCONFIG
-static int __init acpi_parse_mcfg(unsigned long phys_addr, unsigned long size)
+/* The physical address of the MMCONFIG aperture.  Set from ACPI tables. */
+struct acpi_table_mcfg_config *pci_mmcfg_config;
+int pci_mmcfg_config_num;
+
+int __init acpi_parse_mcfg(unsigned long phys_addr, unsigned long size)
 {
 	struct acpi_table_mcfg *mcfg;
+	unsigned long i;
+	int config_size;
 
 	if (!phys_addr || !size)
 		return -EINVAL;
···
 		return -ENODEV;
 	}
 
-	if (mcfg->base_reserved) {
-		printk(KERN_ERR PREFIX "MMCONFIG not in low 4GB of memory\n");
+	/* how many config structures do we have */
+	pci_mmcfg_config_num = 0;
+	i = size - sizeof(struct acpi_table_mcfg);
+	while (i >= sizeof(struct acpi_table_mcfg_config)) {
+		++pci_mmcfg_config_num;
+		i -= sizeof(struct acpi_table_mcfg_config);
+	};
+	if (pci_mmcfg_config_num == 0) {
+		printk(KERN_ERR PREFIX "MMCONFIG has no entries\n");
 		return -ENODEV;
 	}
 
-	pci_mmcfg_base_addr = mcfg->base_address;
+	config_size = pci_mmcfg_config_num * sizeof(*pci_mmcfg_config);
+	pci_mmcfg_config = kmalloc(config_size, GFP_KERNEL);
+	if (!pci_mmcfg_config) {
+		printk(KERN_WARNING PREFIX
+		       "No memory for MCFG config tables\n");
+		return -ENOMEM;
+	}
+
+	memcpy(pci_mmcfg_config, &mcfg->config, config_size);
+	for (i = 0; i < pci_mmcfg_config_num; ++i) {
+		if (mcfg->config[i].base_reserved) {
+			printk(KERN_ERR PREFIX
+			       "MMCONFIG not in low 4GB of memory\n");
+			return -ENODEV;
+		}
+	}
 
 	return 0;
 }
-#else
-#define	acpi_parse_mcfg NULL
-#endif /* !CONFIG_PCI_MMCONFIG */
+#endif /* CONFIG_PCI_MMCONFIG */
 
 #ifdef CONFIG_X86_LOCAL_APIC
 static int __init
···
 }
 EXPORT_SYMBOL(acpi_unmap_lsapic);
 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
+
+int
+acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base)
+{
+	/* TBD */
+	return -EINVAL;
+}
+EXPORT_SYMBOL(acpi_register_ioapic);
+
+int
+acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base)
+{
+	/* TBD */
+	return -EINVAL;
+}
+EXPORT_SYMBOL(acpi_unregister_ioapic);
 
 static unsigned long __init
 acpi_scan_rsdp (
···
 	acpi_process_madt();
 
 	acpi_table_parse(ACPI_HPET, acpi_parse_hpet);
-	acpi_table_parse(ACPI_MCFG, acpi_parse_mcfg);
 
 	return 0;
 }

arch/i386/pci/common.c

···
 
 int pci_routeirq;
 int pcibios_last_bus = -1;
-struct pci_bus *pci_root_bus = NULL;
+unsigned long pirq_table_addr;
+struct pci_bus *pci_root_bus;
 struct pci_raw_ops *raw_pci_ops;
 
 static int pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *value)
···
 
 	printk("PCI: Probing PCI hardware (bus %02x)\n", busnum);
 
-	return pci_scan_bus(busnum, &pci_root_ops, NULL);
+	return pci_scan_bus_parented(NULL, busnum, &pci_root_ops, NULL);
 }
 
 extern u8 pci_cache_line_size;
···
 		return NULL;
 	} else if (!strcmp(str, "biosirq")) {
 		pci_probe |= PCI_BIOS_IRQ_SCAN;
+		return NULL;
+	} else if (!strncmp(str, "pirqaddr=", 9)) {
+		pirq_table_addr = simple_strtoul(str+9, NULL, 0);
 		return NULL;
 	}
 #endif

arch/i386/pci/irq.c

···
 int (*pcibios_enable_irq)(struct pci_dev *dev) = NULL;
 
 /*
+ *  Check passed address for the PCI IRQ Routing Table signature
+ *  and perform checksum verification.
+ */
+
+static inline struct irq_routing_table * pirq_check_routing_table(u8 *addr)
+{
+	struct irq_routing_table *rt;
+	int i;
+	u8 sum;
+
+	rt = (struct irq_routing_table *) addr;
+	if (rt->signature != PIRQ_SIGNATURE ||
+	    rt->version != PIRQ_VERSION ||
+	    rt->size % 16 ||
+	    rt->size < sizeof(struct irq_routing_table))
+		return NULL;
+	sum = 0;
+	for (i=0; i < rt->size; i++)
+		sum += addr[i];
+	if (!sum) {
+		DBG("PCI: Interrupt Routing Table found at 0x%p\n", rt);
+		return rt;
+	}
+	return NULL;
+}
+
+
+
+/*
  *  Search 0xf0000 -- 0xfffff for the PCI IRQ Routing Table.
  */
 
···
 {
 	u8 *addr;
 	struct irq_routing_table *rt;
-	int i;
-	u8 sum;
 
-	for(addr = (u8 *) __va(0xf0000); addr < (u8 *) __va(0x100000); addr += 16) {
-		rt = (struct irq_routing_table *) addr;
-		if (rt->signature != PIRQ_SIGNATURE ||
-		    rt->version != PIRQ_VERSION ||
-		    rt->size % 16 ||
-		    rt->size < sizeof(struct irq_routing_table))
-			continue;
-		sum = 0;
-		for(i=0; i<rt->size; i++)
-			sum += addr[i];
-		if (!sum) {
-			DBG("PCI: Interrupt Routing Table found at 0x%p\n", rt);
+	if (pirq_table_addr) {
+		rt = pirq_check_routing_table((u8 *) __va(pirq_table_addr));
+		if (rt)
 			return rt;
-		}
+		printk(KERN_WARNING "PCI: PIRQ table NOT found at pirqaddr\n");
+	}
+	for(addr = (u8 *) __va(0xf0000); addr < (u8 *) __va(0x100000); addr += 16) {
+		rt = pirq_check_routing_table(addr);
+		if (rt)
+			return rt;
 	}
 	return NULL;
 }

arch/i386/pci/legacy.c

···
 
 	printk("PCI: Probing PCI hardware\n");
 	pci_root_bus = pcibios_scan_root(0);
+	if (pci_root_bus)
+		pci_bus_add_devices(pci_root_bus);
 
 	pcibios_fixup_peer_bridges();
 

arch/i386/pci/mmconfig.c

···
 
 #include <linux/pci.h>
 #include <linux/init.h>
+#include <linux/acpi.h>
 #include "pci.h"
-
-/* The physical address of the MMCONFIG aperture.  Set from ACPI tables. */
-u32 pci_mmcfg_base_addr;
 
 #define mmcfg_virt_addr ((void __iomem *) fix_to_virt(FIX_PCIE_MCFG))
 
···
 /*
  * Functions for accessing PCI configuration space with MMCONFIG accesses
  */
-
-static inline void pci_exp_set_dev_base(int bus, int devfn)
+static u32 get_base_addr(unsigned int seg, int bus)
 {
-	u32 dev_base = pci_mmcfg_base_addr | (bus << 20) | (devfn << 12);
+	int cfg_num = -1;
+	struct acpi_table_mcfg_config *cfg;
+
+	while (1) {
+		++cfg_num;
+		if (cfg_num >= pci_mmcfg_config_num) {
+			/* something bad is going on, no cfg table is found. */
+			/* so we fall back to the old way we used to do this */
+			/* and just rely on the first entry to be correct. */
+			return pci_mmcfg_config[0].base_address;
+		}
+		cfg = &pci_mmcfg_config[cfg_num];
+		if (cfg->pci_segment_group_number != seg)
+			continue;
+		if ((cfg->start_bus_number <= bus) &&
+		    (cfg->end_bus_number >= bus))
+			return cfg->base_address;
+	}
+}
+
+static inline void pci_exp_set_dev_base(unsigned int seg, int bus, int devfn)
+{
+	u32 dev_base = get_base_addr(seg, bus) | (bus << 20) | (devfn << 12);
 	if (dev_base != mmcfg_last_accessed_device) {
 		mmcfg_last_accessed_device = dev_base;
 		set_fixmap_nocache(FIX_PCIE_MCFG, dev_base);
···
 
 	spin_lock_irqsave(&pci_config_lock, flags);
 
-	pci_exp_set_dev_base(bus, devfn);
+	pci_exp_set_dev_base(seg, bus, devfn);
 
 	switch (len) {
 	case 1:
···
 
 	spin_lock_irqsave(&pci_config_lock, flags);
 
-	pci_exp_set_dev_base(bus, devfn);
+	pci_exp_set_dev_base(seg, bus, devfn);
 
 	switch (len) {
 	case 1:
···
 {
 	if ((pci_probe & PCI_PROBE_MMCONF) == 0)
 		goto out;
-	if (!pci_mmcfg_base_addr)
+
+	acpi_table_parse(ACPI_MCFG, acpi_parse_mcfg);
+	if ((pci_mmcfg_config_num == 0) ||
+	    (pci_mmcfg_config == NULL) ||
+	    (pci_mmcfg_config[0].base_address == 0))
 		goto out;
 
 	/* Kludge for now. Don't use mmconfig on AMD systems because

arch/i386/pci/numa.c

···
 		return 0;
 
 	pci_root_bus = pcibios_scan_root(0);
+	if (pci_root_bus)
+		pci_bus_add_devices(pci_root_bus);
 	if (num_online_nodes() > 1)
 		for_each_online_node(quad) {
 			if (quad == 0)

arch/i386/pci/pci.h

···
 #define PCI_ASSIGN_ALL_BUSSES	0x4000
 
 extern unsigned int pci_probe;
+extern unsigned long pirq_table_addr;
 
 /* pci-i386.c */
 

arch/ia64/kernel/acpi.c

···
 	if (BAD_MADT_ENTRY(iosapic, end))
 		return -EINVAL;
 
-	iosapic_init(iosapic->address, iosapic->global_irq_base);
-
-	return 0;
+	return iosapic_init(iosapic->address, iosapic->global_irq_base);
 }
 
 
···
  
 
 #ifdef CONFIG_ACPI_NUMA
-acpi_status __init
+acpi_status __devinit
 acpi_map_iosapic (acpi_handle handle, u32 depth, void *context, void **ret)
 {
 	struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
···
 	return AE_OK;
 }
 #endif /* CONFIG_NUMA */
+
+int
+acpi_register_ioapic (acpi_handle handle, u64 phys_addr, u32 gsi_base)
+{
+	int err;
+
+	if ((err = iosapic_init(phys_addr, gsi_base)))
+		return err;
+
+#if CONFIG_ACPI_NUMA
+	acpi_map_iosapic(handle, 0, NULL, NULL);
+#endif /* CONFIG_ACPI_NUMA */
+
+	return 0;
+}
+EXPORT_SYMBOL(acpi_register_ioapic);
+
+int
+acpi_unregister_ioapic (acpi_handle handle, u32 gsi_base)
+{
+	return iosapic_remove(gsi_base);
+}
+EXPORT_SYMBOL(acpi_unregister_ioapic);
+
 #endif /* CONFIG_ACPI_BOOT */

arch/ia64/kernel/iosapic.c

···
 	char __iomem	*addr;		/* base address of IOSAPIC */
 	unsigned int 	gsi_base;	/* first GSI assigned to this IOSAPIC */
 	unsigned short 	num_rte;	/* number of RTE in this IOSAPIC */
+	int		rtes_inuse;	/* # of RTEs in use on this IOSAPIC */
 #ifdef CONFIG_NUMA
 	unsigned short	node;		/* numa node association via pxm */
 #endif
 } iosapic_lists[NR_IOSAPICS];
 
-static int num_iosapic;
-
-static unsigned char pcat_compat __initdata;	/* 8259 compatibility flag */
+static unsigned char pcat_compat __devinitdata;	/* 8259 compatibility flag */
 
 static int iosapic_kmalloc_ok;
 static LIST_HEAD(free_rte_list);
···
 {
 	int i;
 
-	for (i = 0; i < num_iosapic; i++) {
+	for (i = 0; i < NR_IOSAPICS; i++) {
 		if ((unsigned) (gsi - iosapic_lists[i].gsi_base) < iosapic_lists[i].num_rte)
 			return i;
 	}
···
 		rte->refcnt++;
 		list_add_tail(&rte->rte_list, &iosapic_intr_info[vector].rtes);
 		iosapic_intr_info[vector].count++;
+		iosapic_lists[index].rtes_inuse++;
 	}
 	else if (vector_is_shared(vector)) {
 		struct iosapic_intr_info *info = &iosapic_intr_info[vector];
···
 iosapic_unregister_intr (unsigned int gsi)
 {
 	unsigned long flags;
-	int irq, vector;
+	int irq, vector, index;
 	irq_desc_t *idesc;
 	u32 low32;
 	unsigned long trigger, polarity;
···
 		list_del(&rte->rte_list);
 		iosapic_intr_info[vector].count--;
 		iosapic_free_rte(rte);
+		index = find_iosapic(gsi);
+		iosapic_lists[index].rtes_inuse--;
+		WARN_ON(iosapic_lists[index].rtes_inuse < 0);
 
 		trigger	 = iosapic_intr_info[vector].trigger;
 		polarity = iosapic_intr_info[vector].polarity;
···
 	}
 }
 
-void __init
+static inline int
+iosapic_alloc (void)
+{
+	int index;
+
+	for (index = 0; index < NR_IOSAPICS; index++)
+		if (!iosapic_lists[index].addr)
+			return index;
+
+	printk(KERN_WARNING "%s: failed to allocate iosapic\n", __FUNCTION__);
+	return -1;
+}
+
+static inline void
+iosapic_free (int index)
+{
+	memset(&iosapic_lists[index], 0, sizeof(iosapic_lists[0]));
+}
+
+static inline int
+iosapic_check_gsi_range (unsigned int gsi_base, unsigned int ver)
+{
+	int index;
+	unsigned int gsi_end, base, end;
+
+	/* check gsi range */
+	gsi_end = gsi_base + ((ver >> 16) & 0xff);
+	for (index = 0; index < NR_IOSAPICS; index++) {
+		if (!iosapic_lists[index].addr)
+			continue;
+
+		base = iosapic_lists[index].gsi_base;
+		end  = base + iosapic_lists[index].num_rte - 1;
+
+		if (gsi_base < base && gsi_end < base)
+			continue;/* OK */
+
+		if (gsi_base > end && gsi_end > end)
+			continue; /* OK */
+
+		return -EBUSY;
+	}
+	return 0;
+}
+
+int __devinit
 iosapic_init (unsigned long phys_addr, unsigned int gsi_base)
 {
-	int num_rte;
+	int num_rte, err, index;
 	unsigned int isa_irq, ver;
 	char __iomem *addr;
+	unsigned long flags;
 
-	addr = ioremap(phys_addr, 0);
-	ver = iosapic_version(addr);
+	spin_lock_irqsave(&iosapic_lock, flags);
+	{
+		addr = ioremap(phys_addr, 0);
+		ver = iosapic_version(addr);
 
-	/*
-	 * The MAX_REDIR register holds the highest input pin
-	 * number (starting from 0).
-	 * We add 1 so that we can use it for number of pins (= RTEs)
-	 */
-	num_rte = ((ver >> 16) & 0xff) + 1;
+		if ((err = iosapic_check_gsi_range(gsi_base, ver))) {
+			iounmap(addr);
+			spin_unlock_irqrestore(&iosapic_lock, flags);
+			return err;
+		}
 
-	iosapic_lists[num_iosapic].addr = addr;
-	iosapic_lists[num_iosapic].gsi_base = gsi_base;
-	iosapic_lists[num_iosapic].num_rte = num_rte;
+		/*
+		 * The MAX_REDIR register holds the highest input pin
+		 * number (starting from 0).
+		 * We add 1 so that we can use it for number of pins (= RTEs)
+		 */
+		num_rte = ((ver >> 16) & 0xff) + 1;
+
+		index = iosapic_alloc();
+		iosapic_lists[index].addr = addr;
+		iosapic_lists[index].gsi_base = gsi_base;
+		iosapic_lists[index].num_rte = num_rte;
 #ifdef CONFIG_NUMA
-	iosapic_lists[num_iosapic].node = MAX_NUMNODES;
+		iosapic_lists[index].node = MAX_NUMNODES;
 #endif
-	num_iosapic++;
+	}
+	spin_unlock_irqrestore(&iosapic_lock, flags);
 
 	if ((gsi_base == 0) && pcat_compat) {
 		/*
···
 		for (isa_irq = 0; isa_irq < 16; ++isa_irq)
 			iosapic_override_isa_irq(isa_irq, isa_irq, IOSAPIC_POL_HIGH, IOSAPIC_EDGE);
 	}
+	return 0;
 }
 
+#ifdef CONFIG_HOTPLUG
+int
+iosapic_remove (unsigned int gsi_base)
+{
+	int index, err = 0;
+	unsigned long flags;
+
+	spin_lock_irqsave(&iosapic_lock, flags);
+	{
+		index = find_iosapic(gsi_base);
+		if (index < 0) {
+			printk(KERN_WARNING "%s: No IOSAPIC for GSI base %u\n",
+			       __FUNCTION__, gsi_base);
+			goto out;
+		}
+
+		if (iosapic_lists[index].rtes_inuse) {
+			err = -EBUSY;
+			printk(KERN_WARNING "%s: IOSAPIC for GSI base %u is busy\n",
+			       __FUNCTION__, gsi_base);
+			goto out;
+		}
+
+		iounmap(iosapic_lists[index].addr);
+		iosapic_free(index);
+	}
+ out:
+	spin_unlock_irqrestore(&iosapic_lock, flags);
+	return err;
+}
+#endif /* CONFIG_HOTPLUG */
+
 #ifdef CONFIG_NUMA
-void __init
+void __devinit
 map_iosapic_to_node(unsigned int gsi_base, int node)
 {
 	int index;

arch/ia64/pci/pci.c

···
 	acpi_walk_resources(device->handle, METHOD_NAME__CRS, add_window,
 			&info);
 
-	pbus = pci_scan_bus(bus, &pci_root_ops, controller);
+	pbus = pci_scan_bus_parented(NULL, bus, &pci_root_ops, controller);
 	if (pbus)
 		pcibios_setup_root_windows(pbus, controller);
 
···
 	res->end = region->end + offset;
 }
 
+static int __devinit is_valid_resource(struct pci_dev *dev, int idx)
+{
+	unsigned int i, type_mask = IORESOURCE_IO | IORESOURCE_MEM;
+	struct resource *devr = &dev->resource[idx];
+
+	if (!dev->bus)
+		return 0;
+	for (i=0; i<PCI_BUS_NUM_RESOURCES; i++) {
+		struct resource *busr = dev->bus->resource[i];
+
+		if (!busr || ((busr->flags ^ devr->flags) & type_mask))
+			continue;
+		if ((devr->start) && (devr->start >= busr->start) &&
+				(devr->end <= busr->end))
+			return 1;
+	}
+	return 0;
+}
+
 static void __devinit pcibios_fixup_device_resources(struct pci_dev *dev)
 {
 	struct pci_bus_region region;
···
 		region.start = dev->resource[i].start;
 		region.end = dev->resource[i].end;
 		pcibios_bus_to_resource(dev, &dev->resource[i], &region);
-		pci_claim_resource(dev, i);
+		if ((is_valid_resource(dev, i)))
+			pci_claim_resource(dev, i);
 	}
 }
 
···
 {
 	struct pci_dev *dev;
 
+	if (b->self) {
+		pci_read_bridge_bases(b);
+		pcibios_fixup_device_resources(b->self);
+	}
 	list_for_each_entry(dev, &b->devices, bus_list)
 		pcibios_fixup_device_resources(dev);
 
···
 	u16 cmd, old_cmd;
 	int idx;
 	struct resource *r;
+	unsigned long type_mask = IORESOURCE_IO | IORESOURCE_MEM;
 
 	if (!dev)
 		return -EINVAL;
 
 	pci_read_config_word(dev, PCI_COMMAND, &cmd);
 	old_cmd = cmd;
-	for (idx=0; idx<6; idx++) {
+	for (idx=0; idx<PCI_NUM_RESOURCES; idx++) {
 		/* Only set up the desired resources.  */
 		if (!(mask & (1 << idx)))
 			continue;
 
 		r = &dev->resource[idx];
+		if (!(r->flags & type_mask))
+			continue;
+		if ((idx == PCI_ROM_RESOURCE) &&
+				(!(r->flags & IORESOURCE_ROM_ENABLE)))
+			continue;
 		if (!r->start && r->end) {
 			printk(KERN_ERR
 			       "PCI: Device %s not available because of resource collisions\n",
···
 		if (r->flags & IORESOURCE_MEM)
 			cmd |= PCI_COMMAND_MEMORY;
 	}
-	if (dev->resource[PCI_ROM_RESOURCE].start)
-		cmd |= PCI_COMMAND_MEMORY;
 	if (cmd != old_cmd) {
 		printk("PCI: Enabling device %s (%04x -> %04x)\n", pci_name(dev), old_cmd, cmd);
 		pci_write_config_word(dev, PCI_COMMAND, cmd);

arch/ppc/kernel/pci.c

···
 		*offset += hose->pci_mem_offset;
 		res_bit = IORESOURCE_MEM;
 	} else {
-		io_offset = (unsigned long)hose->io_base_virt;
+		io_offset = hose->io_base_virt - ___IO_BASE;
 		*offset += io_offset;
 		res_bit = IORESOURCE_IO;
 	}
···
 
 		/* found it! construct the final physical address */
 		if (mmap_state == pci_mmap_io)
-			*offset += hose->io_base_phys - _IO_BASE;
+			*offset += hose->io_base_phys - io_offset;
 		return rp;
 	}
 
···
 	}
 
 	return result;
+}
+
+void pci_resource_to_user(const struct pci_dev *dev, int bar,
+			  const struct resource *rsrc,
+			  u64 *start, u64 *end)
+{
+	struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
+	unsigned long offset = 0;
+
+	if (hose == NULL)
+		return;
+
+	if (rsrc->flags & IORESOURCE_IO)
+		offset = ___IO_BASE - hose->io_base_virt + hose->io_base_phys;
+
+	*start = rsrc->start + offset;
+	*end = rsrc->end + offset;
 }
 
 void __init

arch/ppc64/kernel/pci.c

···
 		*offset += hose->pci_mem_offset;
 		res_bit = IORESOURCE_MEM;
 	} else {
-		io_offset = (unsigned long)hose->io_base_virt;
+		io_offset = (unsigned long)hose->io_base_virt - pci_io_base;
 		*offset += io_offset;
 		res_bit = IORESOURCE_IO;
 	}
···
 
 		/* found it! construct the final physical address */
 		if (mmap_state == pci_mmap_io)
-			*offset += hose->io_base_phys - io_offset;
+		       	*offset += hose->io_base_phys - io_offset;
 		return rp;
 	}
 
···
 	return 0;
 }
 EXPORT_SYMBOL(pci_read_irq_line);
+
+void pci_resource_to_user(const struct pci_dev *dev, int bar,
+			  const struct resource *rsrc,
+			  u64 *start, u64 *end)
+{
+	struct pci_controller *hose = pci_bus_to_host(dev->bus);
+	unsigned long offset = 0;
+
+	if (hose == NULL)
+		return;
+
+	if (rsrc->flags & IORESOURCE_IO)
+		offset = pci_io_base - (unsigned long)hose->io_base_virt +
+			hose->io_base_phys;
+
+	*start = rsrc->start + offset;
+	*end = rsrc->end + offset;
+}
 
 #endif /* CONFIG_PPC_MULTIPLATFORM */

arch/x86_64/pci/mmconfig.c

···
 
 #include <linux/pci.h>
 #include <linux/init.h>
+#include <linux/acpi.h>
 #include "pci.h"
 
 #define MMCONFIG_APER_SIZE (256*1024*1024)
 
-/* The physical address of the MMCONFIG aperture.  Set from ACPI tables. */
-u32 pci_mmcfg_base_addr;
-
 /* Static virtual mapping of the MMCONFIG aperture */
-char *pci_mmcfg_virt;
+struct mmcfg_virt {
+	struct acpi_table_mcfg_config *cfg;
+	char *virt;
+};
+static struct mmcfg_virt *pci_mmcfg_virt;
 
-static inline char *pci_dev_base(unsigned int bus, unsigned int devfn)
+static char *get_virt(unsigned int seg, int bus)
 {
-	return pci_mmcfg_virt + ((bus << 20) | (devfn << 12));
+	int cfg_num = -1;
+	struct acpi_table_mcfg_config *cfg;
+
+	while (1) {
+		++cfg_num;
+		if (cfg_num >= pci_mmcfg_config_num) {
+			/* something bad is going on, no cfg table is found. */
+			/* so we fall back to the old way we used to do this */
+			/* and just rely on the first entry to be correct. */
+			return pci_mmcfg_virt[0].virt;
+		}
+		cfg = pci_mmcfg_virt[cfg_num].cfg;
+		if (cfg->pci_segment_group_number != seg)
+			continue;
+		if ((cfg->start_bus_number <= bus) &&
+		    (cfg->end_bus_number >= bus))
+			return pci_mmcfg_virt[cfg_num].virt;
+	}
+}
+
+static inline char *pci_dev_base(unsigned int seg, unsigned int bus, unsigned int devfn)
+{
+
+	return get_virt(seg, bus) + ((bus << 20) | (devfn << 12));
 }
 
 static int pci_mmcfg_read(unsigned int seg, unsigned int bus,
 			  unsigned int devfn, int reg, int len, u32 *value)
 {
-	char *addr = pci_dev_base(bus, devfn); 
+	char *addr = pci_dev_base(seg, bus, devfn);
 
 	if (unlikely(!value || (bus > 255) || (devfn > 255) || (reg > 4095)))
 		return -EINVAL;
···
 static int pci_mmcfg_write(unsigned int seg, unsigned int bus,
 			   unsigned int devfn, int reg, int len, u32 value)
 {
-	char *addr = pci_dev_base(bus,devfn);
+	char *addr = pci_dev_base(seg, bus, devfn);
 
 	if (unlikely((bus > 255) || (devfn > 255) || (reg > 4095)))
 		return -EINVAL;
···
 
 static int __init pci_mmcfg_init(void)
 {
+	int i;
+
 	if ((pci_probe & PCI_PROBE_MMCONF) == 0)
 		return 0;
-	if (!pci_mmcfg_base_addr)
+
+	acpi_table_parse(ACPI_MCFG, acpi_parse_mcfg);
+	if ((pci_mmcfg_config_num == 0) ||
+	    (pci_mmcfg_config == NULL) ||
+	    (pci_mmcfg_config[0].base_address == 0))
 		return 0;
 
 	/* Kludge for now. Don't use mmconfig on AMD systems because
···
 		return 0; 
 
 	/* RED-PEN i386 doesn't do _nocache right now */
-	pci_mmcfg_virt = ioremap_nocache(pci_mmcfg_base_addr, MMCONFIG_APER_SIZE);
-	if (!pci_mmcfg_virt) { 
-		printk("PCI: Cannot map mmconfig aperture\n");
+	pci_mmcfg_virt = kmalloc(sizeof(*pci_mmcfg_virt) * pci_mmcfg_config_num, GFP_KERNEL);
+	if (pci_mmcfg_virt == NULL) {
+		printk("PCI: Can not allocate memory for mmconfig structures\n");
 		return 0;
-	}	
+	}
+	for (i = 0; i < pci_mmcfg_config_num; ++i) {
+		pci_mmcfg_virt[i].cfg = &pci_mmcfg_config[i];
+		pci_mmcfg_virt[i].virt = ioremap_nocache(pci_mmcfg_config[i].base_address, MMCONFIG_APER_SIZE);
+		if (!pci_mmcfg_virt[i].virt) {
+			printk("PCI: Cannot map mmconfig aperture for segment %d\n",
+			       pci_mmcfg_config[i].pci_segment_group_number);
+			return 0;
+		}
+		printk(KERN_INFO "PCI: Using MMCONFIG at %x\n", pci_mmcfg_config[i].base_address);
+	}
 
-	printk(KERN_INFO "PCI: Using MMCONFIG at %x\n", pci_mmcfg_base_addr);
 	raw_pci_ops = &pci_mmcfg;
 	pci_probe = (pci_probe & ~PCI_PROBE_MASK) | PCI_PROBE_MMCONF;
 

drivers/acpi/container.c

···
 		return_VALUE(-ENODEV);
 	}
 
-	result = acpi_bus_scan(*device);
+	result = acpi_bus_start(*device);
 
 	return_VALUE(result);
 }

drivers/acpi/pci_bind.c

···
 
 
 /**
- * acpi_os_get_pci_id
+ * acpi_get_pci_id
  * ------------------
  * This function is used by the ACPI Interpreter (a.k.a. Core Subsystem)
  * to resolve PCI information for ACPI-PCI devices defined in the namespace.
  * This typically occurs when resolving PCI operation region information.
  */
-#ifdef ACPI_FUTURE_USAGE
 acpi_status
-acpi_os_get_pci_id (
+acpi_get_pci_id (
 	acpi_handle		handle,
 	struct acpi_pci_id	*id)
 {
···
 	struct acpi_device	*device = NULL;
 	struct acpi_pci_data	*data = NULL;
 
-	ACPI_FUNCTION_TRACE("acpi_os_get_pci_id");
+	ACPI_FUNCTION_TRACE("acpi_get_pci_id");
 
 	if (!id)
 		return_ACPI_STATUS(AE_BAD_PARAMETER);
···
 	}
 
 	status = acpi_get_data(handle, acpi_pci_data_handler, (void**) &data);
-	if (ACPI_FAILURE(status) || !data || !data->dev) {
+	if (ACPI_FAILURE(status) || !data) {
 		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, 
 			"Invalid ACPI-PCI context for device %s\n",
 			acpi_device_bid(device)));
···
 
 	return_ACPI_STATUS(AE_OK);
 }
-#endif  /*  ACPI_FUTURE_USAGE  */
+EXPORT_SYMBOL(acpi_get_pci_id);
 
 	
 int
···
 	char			*pathname = NULL;
 	struct acpi_buffer	buffer = {0, NULL};
 	acpi_handle		handle = NULL;
+	struct pci_dev		*dev;
+	struct pci_bus 		*bus;
 
 	ACPI_FUNCTION_TRACE("acpi_pci_bind");
 
···
 	 * Locate matching device in PCI namespace.  If it doesn't exist
 	 * this typically means that the device isn't currently inserted
 	 * (e.g. docking station, port replicator, etc.).
+	 * We cannot simply search the global pci device list, since
+	 * PCI devices are added to the global pci list when the root
+	 * bridge start ops are run, which may not have happened yet.
 	 */
-	data->dev = pci_find_slot(data->id.bus, PCI_DEVFN(data->id.device, data->id.function));
+	bus = pci_find_bus(data->id.segment, data->id.bus);
+	if (bus) {
+		list_for_each_entry(dev, &bus->devices, bus_list) {
+			if (dev->devfn == PCI_DEVFN(data->id.device,
+						data->id.function)) {
+				data->dev = dev;
+				break;
+			}
+		}
+	}
 	if (!data->dev) {
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO, 
 			"Device %02x:%02x:%02x.%02x not present in PCI namespace\n",

drivers/acpi/pci_root.c

···
 
 static int acpi_pci_root_add (struct acpi_device *device);
 static int acpi_pci_root_remove (struct acpi_device *device, int type);
+static int acpi_pci_root_start (struct acpi_device *device);
 
 static struct acpi_driver acpi_pci_root_driver = {
 	.name =		ACPI_PCI_ROOT_DRIVER_NAME,
···
 	.ops =		{
 				.add =    acpi_pci_root_add,
 				.remove = acpi_pci_root_remove,
+				.start =  acpi_pci_root_start,
 			},
 };
 
···
 	if (!root)
 		return_VALUE(-ENOMEM);
 	memset(root, 0, sizeof(struct acpi_pci_root));
+	INIT_LIST_HEAD(&root->node);
 
 	root->handle = device->handle;
 	strcpy(acpi_device_name(device), ACPI_PCI_ROOT_DEVICE_NAME);
···
 			root->id.bus);
 
 end:
-	if (result)
+	if (result) {
+		if (!list_empty(&root->node))
+			list_del(&root->node);
 		kfree(root);
+	}
 
 	return_VALUE(result);
 }
 
+static int
+acpi_pci_root_start (
+	struct acpi_device	*device)
+{
+	struct acpi_pci_root	*root;
+
+	ACPI_FUNCTION_TRACE("acpi_pci_root_start");
+
+	list_for_each_entry(root, &acpi_pci_roots, node) {
+		if (root->handle == device->handle) {
+			pci_bus_add_devices(root->bus);
+			return_VALUE(0);
+		}
+	}
+	return_VALUE(-ENODEV);
+}
 
 static int
 acpi_pci_root_remove (

drivers/acpi/processor_core.c

···
 		return_VALUE(-ENODEV);
 	}
 
-	acpi_bus_scan(*device);
+	acpi_bus_start(*device);
 
 	pr = acpi_driver_data(*device);
 	if (!pr)

drivers/acpi/scan.c

···
 	 * upon possible configuration and currently allocated resources.
 	 */
 
+	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Driver successfully bound to device\n"));
+	return_VALUE(0);
+}
+
+int
+acpi_start_single_object (
+		struct acpi_device *device)
+{
+	int result = 0;
+	struct acpi_driver *driver;
+
+	ACPI_FUNCTION_TRACE("acpi_start_single_object");
+
+	if (!(driver = device->driver))
+		return_VALUE(0);
+
 	if (driver->ops.start) {
 		result = driver->ops.start(device);
 		if (result && driver->ops.remove)
 			driver->ops.remove(device, ACPI_BUS_REMOVAL_NORMAL);
-		return_VALUE(result);
 	}
 
-	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Driver successfully bound to device\n"));
-
-	if (driver->ops.scan) {
-		driver->ops.scan(device);
-	}
-
-	return_VALUE(0);
+	return_VALUE(result);
 }
 
 static int acpi_driver_attach(struct acpi_driver * drv)
···
 
 		if (!acpi_bus_match(dev, drv)) {
 			if (!acpi_bus_driver_init(dev, drv)) {
+				acpi_start_single_object(dev);
 				atomic_inc(&drv->references);
 				count++;
 				ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found driver [%s] for device [%s]\n",
···
 }
 
 
-int
-acpi_bus_add (
+static int
+acpi_add_single_object (
 	struct acpi_device	**child,
 	struct acpi_device	*parent,
 	acpi_handle		handle,
···
 	int			result = 0;
 	struct acpi_device	*device = NULL;
 
-	ACPI_FUNCTION_TRACE("acpi_bus_add");
+	ACPI_FUNCTION_TRACE("acpi_add_single_object");
 
 	if (!child)
 		return_VALUE(-EINVAL);
···
 	 *
 	 * TBD: Assumes LDM provides driver hot-plug capability.
 	 */
-	acpi_bus_find_driver(device);
+	result = acpi_bus_find_driver(device);
 
 end:
 	if (!result)
···
 
 	return_VALUE(result);
 }
-EXPORT_SYMBOL(acpi_bus_add);
 
 
-int acpi_bus_scan (struct acpi_device	*start)
+static int acpi_bus_scan (struct acpi_device	*start,
+		struct acpi_bus_ops *ops)
 {
 	acpi_status		status = AE_OK;
 	struct acpi_device	*parent = NULL;
···
 			continue;
 		}
 
-		status = acpi_bus_add(&child, parent, chandle, type);
-		if (ACPI_FAILURE(status))
-			continue;
+		if (ops->acpi_op_add)
+			status = acpi_add_single_object(&child, parent,
+					chandle, type);
+		 else
+			status = acpi_bus_get_device(chandle, &child);
+
+		 if (ACPI_FAILURE(status))
+			 continue;
+
+		if (ops->acpi_op_start) {
+			status = acpi_start_single_object(child);
+			if (ACPI_FAILURE(status))
+				continue;
+		}
 
 		/*
 		 * If the device is present, enabled, and functioning then
···
 
 	return_VALUE(0);
 }
-EXPORT_SYMBOL(acpi_bus_scan);
 
+int
+acpi_bus_add (
+	struct acpi_device	**child,
+	struct acpi_device	*parent,
+	acpi_handle		handle,
+	int			type)
+{
+	int result;
+	struct acpi_bus_ops ops;
+
+	ACPI_FUNCTION_TRACE("acpi_bus_add");
+
+	result = acpi_add_single_object(child, parent, handle, type);
+	if (!result) {
+		memset(&ops, 0, sizeof(ops));
+		ops.acpi_op_add = 1;
+		result = acpi_bus_scan(*child, &ops);
+	}
+	return_VALUE(result);
+}
+EXPORT_SYMBOL(acpi_bus_add);
+
+int
+acpi_bus_start (
+	struct acpi_device *device)
+{
+	int result;
+	struct acpi_bus_ops ops;
+
+	ACPI_FUNCTION_TRACE("acpi_bus_start");
+
+	if (!device)
+		return_VALUE(-EINVAL);
+
+	result = acpi_start_single_object(device);
+	if (!result) {
+		memset(&ops, 0, sizeof(ops));
+		ops.acpi_op_start = 1;
+		result = acpi_bus_scan(device, &ops);
+	}
+	return_VALUE(result);
+}
+EXPORT_SYMBOL(acpi_bus_start);
 
 static int
 acpi_bus_trim(struct acpi_device	*start,
···
 	/*
 	 * Enumerate all fixed-feature devices.
 	 */
-	if (acpi_fadt.pwr_button == 0)
-		result = acpi_bus_add(&device, acpi_root, 
+	if (acpi_fadt.pwr_button == 0) {
+		result = acpi_add_single_object(&device, acpi_root,
 			NULL, ACPI_BUS_TYPE_POWER_BUTTON);
+		if (!result)
+			result = acpi_start_single_object(device);
+	}
 
-	if (acpi_fadt.sleep_button == 0)
-		result = acpi_bus_add(&device, acpi_root, 
+	if (acpi_fadt.sleep_button == 0) {
+		result = acpi_add_single_object(&device, acpi_root,
 			NULL, ACPI_BUS_TYPE_SLEEP_BUTTON);
+		if (!result)
+			result = acpi_start_single_object(device);
+	}
 
 	return_VALUE(result);
 }
···
 static int __init acpi_scan_init(void)
 {
 	int result;
+	struct acpi_bus_ops ops;
 
 	ACPI_FUNCTION_TRACE("acpi_scan_init");
 
···
 	/*
 	 * Create the root device in the bus's device tree
 	 */
-	result = acpi_bus_add(&acpi_root, NULL, ACPI_ROOT_OBJECT, 
+	result = acpi_add_single_object(&acpi_root, NULL, ACPI_ROOT_OBJECT,
 		ACPI_BUS_TYPE_SYSTEM);
 	if (result)
 		goto Done;
+
+	result = acpi_start_single_object(acpi_root);
 
 	/*
 	 * Enumerate devices in the ACPI namespace.
 	 */
 	result = acpi_bus_scan_fixed(acpi_root);
-	if (!result) 
-		result = acpi_bus_scan(acpi_root);
+	if (!result) {
+		memset(&ops, 0, sizeof(ops));
+		ops.acpi_op_add = 1;
+		ops.acpi_op_start = 1;
+		result = acpi_bus_scan(acpi_root, &ops);
+	}
 
 	if (result)
 		acpi_device_unregister(acpi_root, ACPI_BUS_REMOVAL_NORMAL);

drivers/char/moxa.c

···
 		int n = (sizeof(moxa_pcibrds) / sizeof(moxa_pcibrds[0])) - 1;
 		i = 0;
 		while (i < n) {
-			while ((p = pci_find_device(moxa_pcibrds[i].vendor, moxa_pcibrds[i].device, p))!=NULL)
+			while ((p = pci_get_device(moxa_pcibrds[i].vendor, moxa_pcibrds[i].device, p))!=NULL)
 			{
 				if (pci_enable_device(p))
 					continue;

drivers/char/rio/rio_linux.c

···
 
 #ifdef CONFIG_PCI
     /* First look for the JET devices: */
-    while ((pdev = pci_find_device (PCI_VENDOR_ID_SPECIALIX, 
+    while ((pdev = pci_get_device (PCI_VENDOR_ID_SPECIALIX,
                                     PCI_DEVICE_ID_SPECIALIX_SX_XIO_IO8, 
                                     pdev))) {
        if (pci_enable_device(pdev)) continue;
···
   */
 
     /* Then look for the older RIO/PCI devices: */
-    while ((pdev = pci_find_device (PCI_VENDOR_ID_SPECIALIX, 
+    while ((pdev = pci_get_device (PCI_VENDOR_ID_SPECIALIX,
                                     PCI_DEVICE_ID_SPECIALIX_RIO, 
                                     pdev))) {
        if (pci_enable_device(pdev)) continue;

drivers/message/fusion/mptfc.c

···
 	.id_table	= mptfc_pci_table,
 	.probe		= mptfc_probe,
 	.remove		= __devexit_p(mptscsih_remove),
-	.driver         = {
-		.shutdown = mptscsih_shutdown,
-        },
+	.shutdown	= mptscsih_shutdown,
 #ifdef CONFIG_PM
 	.suspend	= mptscsih_suspend,
 	.resume		= mptscsih_resume,

drivers/message/fusion/mptscsih.c

···
 #endif
 
 void 		mptscsih_remove(struct pci_dev *);
-void 		mptscsih_shutdown(struct device *);
+void 		mptscsih_shutdown(struct pci_dev *);
 #ifdef CONFIG_PM
 int 		mptscsih_suspend(struct pci_dev *pdev, pm_message_t state);
 int 		mptscsih_resume(struct pci_dev *pdev);
···
 #endif
 #endif
 
-	mptscsih_shutdown(&pdev->dev);
+	mptscsih_shutdown(pdev);
 
 	sz1=0;
 
···
  *
  */
 void
-mptscsih_shutdown(struct device * dev)
+mptscsih_shutdown(struct pci_dev *pdev)
 {
-	MPT_ADAPTER 		*ioc = pci_get_drvdata(to_pci_dev(dev));
+	MPT_ADAPTER 		*ioc = pci_get_drvdata(pdev);
 	struct Scsi_Host 	*host = ioc->sh;
 	MPT_SCSI_HOST		*hd;
 
···
 int
 mptscsih_suspend(struct pci_dev *pdev, pm_message_t state)
 {
-	mptscsih_shutdown(&pdev->dev);
+	mptscsih_shutdown(pdev);
 	return mpt_suspend(pdev,state);
 }
 

drivers/message/fusion/mptscsih.h

···
 #endif
 
 extern void mptscsih_remove(struct pci_dev *);
-extern void mptscsih_shutdown(struct device *);
+extern void mptscsih_shutdown(struct pci_dev *);
 #ifdef CONFIG_PM
 extern int mptscsih_suspend(struct pci_dev *pdev, u32 state);
 extern int mptscsih_resume(struct pci_dev *pdev);

drivers/message/fusion/mptspi.c

···
 	.id_table	= mptspi_pci_table,
 	.probe		= mptspi_probe,
 	.remove		= __devexit_p(mptscsih_remove),
-	.driver         = {
-		.shutdown = mptscsih_shutdown,
-        },
+	.shutdown	= mptscsih_shutdown,
 #ifdef CONFIG_PM
 	.suspend	= mptscsih_suspend,
 	.resume		= mptscsih_resume,

drivers/net/e100.c

···
 #endif
 
 
-static void e100_shutdown(struct device *dev)
+static void e100_shutdown(struct pci_dev *pdev)
 {
-	struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
 	struct net_device *netdev = pci_get_drvdata(pdev);
 	struct nic *nic = netdev_priv(netdev);
 
···
 	.suspend =      e100_suspend,
 	.resume =       e100_resume,
 #endif
-
-	.driver = {
-		.shutdown = e100_shutdown,
-	}
-
+	.shutdown =	e100_shutdown,
 };
 
 static int __init e100_init_module(void)

drivers/net/via-rhine.c

···
 static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
 static struct ethtool_ops netdev_ethtool_ops;
 static int  rhine_close(struct net_device *dev);
-static void rhine_shutdown (struct device *gdev);
+static void rhine_shutdown (struct pci_dev *pdev);
 
 #define RHINE_WAIT_FOR(condition) do {					\
 	int i=1024;							\
···
 	pci_set_drvdata(pdev, NULL);
 }
 
-static void rhine_shutdown (struct device *gendev)
+static void rhine_shutdown (struct pci_dev *pdev)
 {
-	struct pci_dev *pdev = to_pci_dev(gendev);
 	struct net_device *dev = pci_get_drvdata(pdev);
 	struct rhine_private *rp = netdev_priv(dev);
 	void __iomem *ioaddr = rp->base;
···
 	pci_save_state(pdev);
 
 	spin_lock_irqsave(&rp->lock, flags);
-	rhine_shutdown(&pdev->dev);
+	rhine_shutdown(pdev);
 	spin_unlock_irqrestore(&rp->lock, flags);
 
 	free_irq(dev->irq, dev);
···
 	.suspend	= rhine_suspend,
 	.resume		= rhine_resume,
 #endif /* CONFIG_PM */
-	.driver = {
-		.shutdown = rhine_shutdown,
-	}
+	.shutdown =	rhine_shutdown,
 };
 
 

drivers/parisc/dino.c

···
 	bus = pci_scan_bus_parented(&dev->dev, dino_current_bus,
 				    &dino_cfg_ops, NULL);
 	if(bus) {
+		pci_bus_add_devices(bus);
 		/* This code *depends* on scanning being single threaded
 		 * if it isn't, this global bus number count will fail
 		 */

drivers/parisc/lba_pci.c

···
 	lba_bus = lba_dev->hba.hba_bus =
 		pci_scan_bus_parented(&dev->dev, lba_dev->hba.bus_num.start,
 				cfg_ops, NULL);
+	if (lba_bus)
+		pci_bus_add_devices(lba_bus);
 
 	/* This is in lieu of calling pci_assign_unassigned_resources() */
 	if (is_pdc_pat()) {

drivers/pci/bus.c

···
 		 * If there is an unattached subordinate bus, attach
 		 * it and then scan for unattached PCI devices.
 		 */
-		if (dev->subordinate && list_empty(&dev->subordinate->node)) {
-			spin_lock(&pci_bus_lock);
-			list_add_tail(&dev->subordinate->node, &dev->bus->children);
-			spin_unlock(&pci_bus_lock);
+		if (dev->subordinate) {
+		       if (list_empty(&dev->subordinate->node)) {
+			       spin_lock(&pci_bus_lock);
+			       list_add_tail(&dev->subordinate->node,
+					       &dev->bus->children);
+			       spin_unlock(&pci_bus_lock);
+		       }
 			pci_bus_add_devices(dev->subordinate);
 
 			sysfs_create_link(&dev->subordinate->class_dev.kobj, &dev->dev.kobj, "bridge");

drivers/pci/hotplug/Makefile

···
 				ibmphp_hpc.o
 
 acpiphp-objs		:=	acpiphp_core.o	\
-				acpiphp_glue.o	\
-				acpiphp_pci.o	\
-				acpiphp_res.o
+				acpiphp_glue.o
 
 rpaphp-objs		:=	rpaphp_core.o	\
 				rpaphp_pci.o	\

drivers/pci/hotplug/acpiphp.h

···
  * Copyright (C) 2002 Hiroshi Aono ([e-mail])
  * Copyright (C) 2002,2003 Takayoshi Kochi ([e-mail])
  * Copyright (C) 2002,2003 NEC Corporation
+ * Copyright (C) 2003-2005 Matthew Wilcox ([e-mail])
+ * Copyright (C) 2003-2005 Hewlett Packard
  *
  * All rights reserved.
  *
···
 
 struct acpiphp_bridge;
 struct acpiphp_slot;
-struct pci_resource;
 
 /*
  * struct slot - slot information for each *physical* slot
···
 	struct list_head	slot_list;
 
 	struct acpiphp_slot	*acpi_slot;
-};
-
-/*
- * struct pci_resource - describes pci resource (mem, pfmem, io, bus)
- */
-struct pci_resource {
-	struct pci_resource * next;
-	u64 base;
-	u32 length;
 };
 
 /**
···
 	int type;
 	int nr_slots;
 
-	u8 seg;
-	u8 bus;
-	u8 sub;
-
 	u32 flags;
 
 	/* This bus (host bridge) or Secondary bus (PCI-to-PCI bridge) */
···
 	struct hpp_param hpp;
 
 	spinlock_t res_lock;
-
-	/* available resources on this bus */
-	struct pci_resource *mem_head;
-	struct pci_resource *p_mem_head;
-	struct pci_resource *io_head;
-	struct pci_resource *bus_head;
 };
 
 
···
 
 	u8		function;	/* pci function# */
 	u32		flags;		/* see below */
-
-	/* resources used for this function */
-	struct pci_resource *mem_head;
-	struct pci_resource *p_mem_head;
-	struct pci_resource *io_head;
-	struct pci_resource *bus_head;
 };
 
 /**
···
 extern u8 acpiphp_get_latch_status (struct acpiphp_slot *slot);
 extern u8 acpiphp_get_adapter_status (struct acpiphp_slot *slot);
 extern u32 acpiphp_get_address (struct acpiphp_slot *slot);
-
-/* acpiphp_pci.c */
-extern struct pci_dev *acpiphp_allocate_pcidev (struct pci_bus *pbus, int dev, int fn);
-extern int acpiphp_configure_slot (struct acpiphp_slot *slot);
-extern int acpiphp_configure_function (struct acpiphp_func *func);
-extern void acpiphp_unconfigure_function (struct acpiphp_func *func);
-extern int acpiphp_detect_pci_resource (struct acpiphp_bridge *bridge);
-extern int acpiphp_init_func_resource (struct acpiphp_func *func);
-
-/* acpiphp_res.c */
-extern struct pci_resource *acpiphp_get_io_resource (struct pci_resource **head, u32 size);
-extern struct pci_resource *acpiphp_get_resource (struct pci_resource **head, u32 size);
-extern struct pci_resource *acpiphp_get_resource_with_base (struct pci_resource **head, u64 base, u32 size);
-extern int acpiphp_resource_sort_and_combine (struct pci_resource **head);
-extern struct pci_resource *acpiphp_make_resource (u64 base, u32 length);
-extern void acpiphp_move_resource (struct pci_resource **from, struct pci_resource **to);
-extern void acpiphp_free_resource (struct pci_resource **res);
-extern void acpiphp_dump_resource (struct acpiphp_bridge *bridge); /* debug */
-extern void acpiphp_dump_func_resource (struct acpiphp_func *func); /* debug */
 
 /* variables */
 extern int acpiphp_debug;

drivers/pci/hotplug/acpiphp_core.c

···
  * Copyright (C) 2002 Hiroshi Aono ([e-mail])
  * Copyright (C) 2002,2003 Takayoshi Kochi ([e-mail])
  * Copyright (C) 2002,2003 NEC Corporation
+ * Copyright (C) 2003-2005 Matthew Wilcox ([e-mail])
+ * Copyright (C) 2003-2005 Hewlett Packard
  *
  * All rights reserved.
  *
···
 static int num_slots;
 static struct acpiphp_attention_info *attention_info;
 
-#define DRIVER_VERSION	"0.4"
-#define DRIVER_AUTHOR	"Greg Kroah-Hartman <[e-mail]>, Takayoshi Kochi <[e-mail]>"
+#define DRIVER_VERSION	"0.5"
+#define DRIVER_AUTHOR	"Greg Kroah-Hartman <[e-mail]>, Takayoshi Kochi <[e-mail]>, Matthew Wilcox <[e-mail]>"
 #define DRIVER_DESC	"ACPI Hot Plug PCI Controller Driver"
 
 MODULE_AUTHOR(DRIVER_AUTHOR);
···
 /**
  * get_address - get pci address of a slot
  * @hotplug_slot: slot to get status
- * @busdev: pointer to struct pci_busdev (seg, bus, dev)
- *
+ * @value: pointer to struct pci_busdev (seg, bus, dev)
  */
 static int get_address(struct hotplug_slot *hotplug_slot, u32 *value)
 {

drivers/pci/hotplug/acpiphp_glue.c

···
  * Copyright (C) 2002,2003 Takayoshi Kochi ([e-mail])
  * Copyright (C) 2002 Hiroshi Aono ([e-mail])
  * Copyright (C) 2002,2003 NEC Corporation
+ * Copyright (C) 2003-2005 Matthew Wilcox ([e-mail])
+ * Copyright (C) 2003-2005 Hewlett Packard
+ * Copyright (C) 2005 Rajesh Shah ([e-mail])
+ * Copyright (C) 2005 Intel Corporation
  *
  * All rights reserved.
  *
···
  *
  * Send feedback to <[e-mail]>
  *
+ */
+
+/*
+ * Lifetime rules for pci_dev:
+ *  - The one in acpiphp_func has its refcount elevated by pci_get_slot()
+ *    when the driver is loaded or when an insertion event occurs.  It loses
+ *    a refcount when its ejected or the driver unloads.
+ *  - The one in acpiphp_bridge has its refcount elevated by pci_get_slot()
+ *    when the bridge is scanned and it loses a refcount when the bridge
+ *    is removed.
  */
 
 #include <linux/init.h>
···
 
 		bridge->nr_slots++;
 
-		dbg("found ACPI PCI Hotplug slot at PCI %02x:%02x Slot:%d\n",
-		    slot->bridge->bus, slot->device, slot->sun);
+		dbg("found ACPI PCI Hotplug slot %d at PCI %04x:%02x:%02x\n",
+				slot->sun, pci_domain_nr(bridge->pci_bus),
+				bridge->pci_bus->number, slot->device);
 	}
 
 	newfunc->slot = slot;
 	list_add_tail(&newfunc->sibling, &slot->funcs);
 
 	/* associate corresponding pci_dev */
-	newfunc->pci_dev = pci_find_slot(bridge->bus,
+	newfunc->pci_dev = pci_get_slot(bridge->pci_bus,
 					 PCI_DEVFN(device, function));
 	if (newfunc->pci_dev) {
-		if (acpiphp_init_func_resource(newfunc) < 0) {
-			kfree(newfunc);
-			return AE_ERROR;
-		}
 		slot->flags |= (SLOT_ENABLED | SLOT_POWEREDON);
 	}
 
···
 	return count;
 }
 
-
-/* decode ACPI _CRS data and convert into our internal resource list
- * TBD: _TRA, etc.
- */
-static acpi_status
-decode_acpi_resource(struct acpi_resource *resource, void *context)
-{
-	struct acpiphp_bridge *bridge = (struct acpiphp_bridge *) context;
-	struct acpi_resource_address64 address;
-	struct pci_resource *res;
-
-	if (resource->id != ACPI_RSTYPE_ADDRESS16 &&
-	    resource->id != ACPI_RSTYPE_ADDRESS32 &&
-	    resource->id != ACPI_RSTYPE_ADDRESS64)
-		return AE_OK;
-
-	acpi_resource_to_address64(resource, &address);
-
-	if (address.producer_consumer == ACPI_PRODUCER && address.address_length > 0) {
-		dbg("resource type: %d: 0x%llx - 0x%llx\n", address.resource_type,
-		    (unsigned long long)address.min_address_range,
-		    (unsigned long long)address.max_address_range);
-		res = acpiphp_make_resource(address.min_address_range,
-				    address.address_length);
-		if (!res) {
-			err("out of memory\n");
-			return AE_OK;
-		}
-
-		switch (address.resource_type) {
-		case ACPI_MEMORY_RANGE:
-			if (address.attribute.memory.cache_attribute == ACPI_PREFETCHABLE_MEMORY) {
-				res->next = bridge->p_mem_head;
-				bridge->p_mem_head = res;
-			} else {
-				res->next = bridge->mem_head;
-				bridge->mem_head = res;
-			}
-			break;
-		case ACPI_IO_RANGE:
-			res->next = bridge->io_head;
-			bridge->io_head = res;
-			break;
-		case ACPI_BUS_NUMBER_RANGE:
-			res->next = bridge->bus_head;
-			bridge->bus_head = res;
-			break;
-		default:
-			/* invalid type */
-			kfree(res);
-			break;
-		}
-	}
-
-	return AE_OK;
-}
 
 /* decode ACPI 2.0 _HPP hot plug parameters */
 static void decode_hpp(struct acpiphp_bridge *bridge)
···
 	/* decode ACPI 2.0 _HPP (hot plug parameters) */
 	decode_hpp(bridge);
 
-	/* subtract all resources already allocated */
-	acpiphp_detect_pci_resource(bridge);
-
 	/* register all slot objects under this bridge */
 	status = acpi_walk_namespace(ACPI_TYPE_DEVICE, bridge->handle, (u32)1,
 				     register_slot, bridge, NULL);
 
 	/* install notify handler */
-	status = acpi_install_notify_handler(bridge->handle,
+	if (bridge->type != BRIDGE_TYPE_HOST) {
+		status = acpi_install_notify_handler(bridge->handle,
 					     ACPI_SYSTEM_NOTIFY,
 					     handle_hotplug_event_bridge,
 					     bridge);
 
-	if (ACPI_FAILURE(status)) {
-		err("failed to register interrupt notify handler\n");
+		if (ACPI_FAILURE(status)) {
+			err("failed to register interrupt notify handler\n");
+		}
 	}
 
 	list_add(&bridge->list, &bridge_list);
-
-	dbg("Bridge resource:\n");
-	acpiphp_dump_resource(bridge);
 }
 
 
 /* allocate and initialize host bridge data structure */
-static void add_host_bridge(acpi_handle *handle, int seg, int bus)
+static void add_host_bridge(acpi_handle *handle, struct pci_bus *pci_bus)
 {
-	acpi_status status;
 	struct acpiphp_bridge *bridge;
 
 	bridge = kmalloc(sizeof(struct acpiphp_bridge), GFP_KERNEL);
···
 
 	bridge->type = BRIDGE_TYPE_HOST;
 	bridge->handle = handle;
-	bridge->seg = seg;
-	bridge->bus = bus;
 
-	bridge->pci_bus = pci_find_bus(seg, bus);
+	bridge->pci_bus = pci_bus;
 
 	spin_lock_init(&bridge->res_lock);
-
-	/* to be overridden when we decode _CRS	*/
-	bridge->sub = bridge->bus;
-
-	/* decode resources */
-
-	status = acpi_walk_resources(handle, METHOD_NAME__CRS,
-		decode_acpi_resource, bridge);
-
-	if (ACPI_FAILURE(status)) {
-		err("failed to decode bridge resources\n");
-		kfree(bridge);
-		return;
-	}
-
-	acpiphp_resource_sort_and_combine(&bridge->io_head);
-	acpiphp_resource_sort_and_combine(&bridge->mem_head);
-	acpiphp_resource_sort_and_combine(&bridge->p_mem_head);
-	acpiphp_resource_sort_and_combine(&bridge->bus_head);
-
-	dbg("ACPI _CRS resource:\n");
-	acpiphp_dump_resource(bridge);
-
-	if (bridge->bus_head) {
-		bridge->bus = bridge->bus_head->base;
-		bridge->sub = bridge->bus_head->base + bridge->bus_head->length - 1;
-	}
 
 	init_bridge_misc(bridge);
 }
 
 
 /* allocate and initialize PCI-to-PCI bridge data structure */
-static void add_p2p_bridge(acpi_handle *handle, int seg, int bus, int dev, int fn)
+static void add_p2p_bridge(acpi_handle *handle, struct pci_dev *pci_dev)
 {
 	struct acpiphp_bridge *bridge;
-	u8 tmp8;
-	u16 tmp16;
-	u64 base64, limit64;
-	u32 base, limit, base32u, limit32u;
 
 	bridge = kmalloc(sizeof(struct acpiphp_bridge), GFP_KERNEL);
 	if (bridge == NULL) {
···
 
 	bridge->type = BRIDGE_TYPE_P2P;
 	bridge->handle = handle;
-	bridge->seg = seg;
 
-	bridge->pci_dev = pci_find_slot(bus, PCI_DEVFN(dev, fn));
-	if (!bridge->pci_dev) {
-		err("Can't get pci_dev\n");
-		kfree(bridge);
-		return;
-	}
-
-	bridge->pci_bus = bridge->pci_dev->subordinate;
+	bridge->pci_dev = pci_dev_get(pci_dev);
+	bridge->pci_bus = pci_dev->subordinate;
 	if (!bridge->pci_bus) {
 		err("This is not a PCI-to-PCI bridge!\n");
-		kfree(bridge);
-		return;
+		goto err;
 	}
 
 	spin_lock_init(&bridge->res_lock);
 
-	bridge->bus = bridge->pci_bus->number;
-	bridge->sub = bridge->pci_bus->subordinate;
-
-	/*
-	 * decode resources under this P2P bridge
-	 */
-
-	/* I/O resources */
-	pci_read_config_byte(bridge->pci_dev, PCI_IO_BASE, &tmp8);
-	base = tmp8;
-	pci_read_config_byte(bridge->pci_dev, PCI_IO_LIMIT, &tmp8);
-	limit = tmp8;
-
-	switch (base & PCI_IO_RANGE_TYPE_MASK) {
-	case PCI_IO_RANGE_TYPE_16:
-		base = (base << 8) & 0xf000;
-		limit = ((limit << 8) & 0xf000) + 0xfff;
-		bridge->io_head = acpiphp_make_resource((u64)base, limit - base + 1);
-		if (!bridge->io_head) {
-			err("out of memory\n");
-			kfree(bridge);
-			return;
-		}
-		dbg("16bit I/O range: %04x-%04x\n",
-		    (u32)bridge->io_head->base,
-		    (u32)(bridge->io_head->base + bridge->io_head->length - 1));
-		break;
-	case PCI_IO_RANGE_TYPE_32:
-		pci_read_config_word(bridge->pci_dev, PCI_IO_BASE_UPPER16, &tmp16);
-		base = ((u32)tmp16 << 16) | ((base << 8) & 0xf000);
-		pci_read_config_word(bridge->pci_dev, PCI_IO_LIMIT_UPPER16, &tmp16);
-		limit = (((u32)tmp16 << 16) | ((limit << 8) & 0xf000)) + 0xfff;
-		bridge->io_head = acpiphp_make_resource((u64)base, limit - base + 1);
-		if (!bridge->io_head) {
-			err("out of memory\n");
-			kfree(bridge);
-			return;
-		}
-		dbg("32bit I/O range: %08x-%08x\n",
-		    (u32)bridge->io_head->base,
-		    (u32)(bridge->io_head->base + bridge->io_head->length - 1));
-		break;
-	case 0x0f:
-		dbg("I/O space unsupported\n");
-		break;
-	default:
-		warn("Unknown I/O range type\n");
-	}
-
-	/* Memory resources (mandatory for P2P bridge) */
-	pci_read_config_word(bridge->pci_dev, PCI_MEMORY_BASE, &tmp16);
-	base = (tmp16 & 0xfff0) << 16;
-	pci_read_config_word(bridge->pci_dev, PCI_MEMORY_LIMIT, &tmp16);
-	limit = ((tmp16 & 0xfff0) << 16) | 0xfffff;
-	bridge->mem_head = acpiphp_make_resource((u64)base, limit - base + 1);
-	if (!bridge->mem_head) {
-		err("out of memory\n");
-		kfree(bridge);
-		return;
-	}
-	dbg("32bit Memory range: %08x-%08x\n",
-	    (u32)bridge->mem_head->base,
-	    (u32)(bridge->mem_head->base + bridge->mem_head->length-1));
-
-	/* Prefetchable Memory resources (optional) */
-	pci_read_config_word(bridge->pci_dev, PCI_PREF_MEMORY_BASE, &tmp16);
-	base = tmp16;
-	pci_read_config_word(bridge->pci_dev, PCI_PREF_MEMORY_LIMIT, &tmp16);
-	limit = tmp16;
-
-	switch (base & PCI_MEMORY_RANGE_TYPE_MASK) {
-	case PCI_PREF_RANGE_TYPE_32:
-		base = (base & 0xfff0) << 16;
-		limit = ((limit & 0xfff0) << 16) | 0xfffff;
-		bridge->p_mem_head = acpiphp_make_resource((u64)base, limit - base + 1);
-		if (!bridge->p_mem_head) {
-			err("out of memory\n");
-			kfree(bridge);
-			return;
-		}
-		dbg("32bit Prefetchable memory range: %08x-%08x\n",
-		    (u32)bridge->p_mem_head->base,
-		    (u32)(bridge->p_mem_head->base + bridge->p_mem_head->length - 1));
-		break;
-	case PCI_PREF_RANGE_TYPE_64:
-		pci_read_config_dword(bridge->pci_dev, PCI_PREF_BASE_UPPER32, &base32u);
-		pci_read_config_dword(bridge->pci_dev, PCI_PREF_LIMIT_UPPER32, &limit32u);
-		base64 = ((u64)base32u << 32) | ((base & 0xfff0) << 16);
-		limit64 = (((u64)limit32u << 32) | ((limit & 0xfff0) << 16)) + 0xfffff;
-
-		bridge->p_mem_head = acpiphp_make_resource(base64, limit64 - base64 + 1);
-		if (!bridge->p_mem_head) {
-			err("out of memory\n");
-			kfree(bridge);
-			return;
-		}
-		dbg("64bit Prefetchable memory range: %08x%08x-%08x%08x\n",
-		    (u32)(bridge->p_mem_head->base >> 32),
-		    (u32)(bridge->p_mem_head->base & 0xffffffff),
-		    (u32)((bridge->p_mem_head->base + bridge->p_mem_head->length - 1) >> 32),
-		    (u32)((bridge->p_mem_head->base + bridge->p_mem_head->length - 1) & 0xffffffff));
-		break;
-	case 0x0f:
-		break;
-	default:
-		warn("Unknown prefetchale memory type\n");
-	}
-
 	init_bridge_misc(bridge);
+	return;
+ err:
+	pci_dev_put(pci_dev);
+	kfree(bridge);
+	return;
 }
 
 
···
 {
 	acpi_status status;
 	acpi_handle dummy_handle;
-	unsigned long *segbus = context;
 	unsigned long tmp;
-	int seg, bus, device, function;
+	int device, function;
 	struct pci_dev *dev;
-
-	/* get PCI address */
-	seg = (*segbus >> 8) & 0xff;
-	bus = *segbus & 0xff;
+	struct pci_bus *pci_bus = context;
 
 	status = acpi_get_handle(handle, "_ADR", &dummy_handle);
 	if (ACPI_FAILURE(status))
···
 	device = (tmp >> 16) & 0xffff;
 	function = tmp & 0xffff;
 
-	dev = pci_find_slot(bus, PCI_DEVFN(device, function));
+	dev = pci_get_slot(pci_bus, PCI_DEVFN(device, function));
 
-	if (!dev)
-		return AE_OK;
-
-	if (!dev->subordinate)
-		return AE_OK;
+	if (!dev || !dev->subordinate)
+		goto out;
 
 	/* check if this bridge has ejectable slots */
 	if (detect_ejectable_slots(handle) > 0) {
 		dbg("found PCI-to-PCI bridge at PCI %s\n", pci_name(dev));
-		add_p2p_bridge(handle, seg, bus, device, function);
+		add_p2p_bridge(handle, dev);
 	}
 
+ out:
+	pci_dev_put(dev);
 	return AE_OK;
 }
 
···
 	unsigned long tmp;
 	int seg, bus;
 	acpi_handle dummy_handle;
+	struct pci_bus *pci_bus;
 
 	/* if the bridge doesn't have _STA, we assume it is always there */
 	status = acpi_get_handle(handle, "_STA", &dummy_handle);
···
 		bus = 0;
 	}
 
-	/* check if this bridge has ejectable slots */
-	if (detect_ejectable_slots(handle) > 0) {
-		dbg("found PCI host-bus bridge with hot-pluggable slots\n");
-		add_host_bridge(handle, seg, bus);
+	pci_bus = pci_find_bus(seg, bus);
+	if (!pci_bus) {
+		err("Can't find bus %04x:%02x\n", seg, bus);
 		return 0;
 	}
 
-	tmp = seg << 8 | bus;
+	/* check if this bridge has ejectable slots */
+	if (detect_ejectable_slots(handle) > 0) {
+		dbg("found PCI host-bus bridge with hot-pluggable slots\n");
+		add_host_bridge(handle, pci_bus);
+		return 0;
+	}
 
 	/* search P2P bridges under this host bridge */
 	status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, (u32)1,
-				     find_p2p_bridge, &tmp, NULL);
+				     find_p2p_bridge, pci_bus, NULL);
 
 	if (ACPI_FAILURE(status))
 		warn("find_p2p_bridge faied (error code = 0x%x)\n",status);
···
 	return 0;
 }
 
+static struct acpiphp_bridge *acpiphp_handle_to_bridge(acpi_handle handle)
+{
+	struct list_head *head;
+	list_for_each(head, &bridge_list) {
+		struct acpiphp_bridge *bridge = list_entry(head,
+						struct acpiphp_bridge, list);
+		if (bridge->handle == handle)
+			return bridge;
+	}
+
+	return NULL;
+}
+
+static void cleanup_bridge(struct acpiphp_bridge *bridge)
+{
+	struct list_head *list, *tmp;
+	struct acpiphp_slot *slot;
+	acpi_status status;
+	acpi_handle handle = bridge->handle;
+
+	status = acpi_remove_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
+					    handle_hotplug_event_bridge);
+	if (ACPI_FAILURE(status))
+		err("failed to remove notify handler\n");
+
+	slot = bridge->slots;
+	while (slot) {
+		struct acpiphp_slot *next = slot->next;
+		list_for_each_safe (list, tmp, &slot->funcs) {
+			struct acpiphp_func *func;
+			func = list_entry(list, struct acpiphp_func, sibling);
+			status = acpi_remove_notify_handler(func->handle,
+						ACPI_SYSTEM_NOTIFY,
+						handle_hotplug_event_func);
+			if (ACPI_FAILURE(status))
+				err("failed to remove notify handler\n");
+			pci_dev_put(func->pci_dev);
+			list_del(list);
+			kfree(func);
+		}
+		kfree(slot);
+		slot = next;
+	}
+
+	pci_dev_put(bridge->pci_dev);
+	list_del(&bridge->list);
+	kfree(bridge);
+}
+
+static acpi_status
+cleanup_p2p_bridge(acpi_handle handle, u32 lvl, void *context, void **rv)
+{
+	struct acpiphp_bridge *bridge;
+
+	if (!(bridge = acpiphp_handle_to_bridge(handle)))
+		return AE_OK;
+	cleanup_bridge(bridge);
+	return AE_OK;
+}
 
 static void remove_bridge(acpi_handle handle)
 {
-	/* No-op for now .. */
+	struct acpiphp_bridge *bridge;
+
+	bridge = acpiphp_handle_to_bridge(handle);
+	if (bridge) {
+		cleanup_bridge(bridge);
+	} else {
+		/* clean-up p2p bridges under this host bridge */
+		acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
+				(u32)1, cleanup_p2p_bridge, NULL, NULL);
+	}
 }
 
+static struct pci_dev * get_apic_pci_info(acpi_handle handle)
+{
+	struct acpi_pci_id id;
+	struct pci_bus *bus;
+	struct pci_dev *dev;
+
+	if (ACPI_FAILURE(acpi_get_pci_id(handle, &id)))
+		return NULL;
+
+	bus = pci_find_bus(id.segment, id.bus);
+	if (!bus)
+		return NULL;
+
+	dev = pci_get_slot(bus, PCI_DEVFN(id.device, id.function));
+	if (!dev)
+		return NULL;
+
+	if ((dev->class != PCI_CLASS_SYSTEM_PIC_IOAPIC) &&
+	    (dev->class != PCI_CLASS_SYSTEM_PIC_IOXAPIC))
+	{
+		pci_dev_put(dev);
+		return NULL;
+	}
+
+	return dev;
+}
+
+static int get_gsi_base(acpi_handle handle, u32 *gsi_base)
+{
+	acpi_status status;
+	int result = -1;
+	unsigned long gsb;
+	struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+	union acpi_object *obj;
+	void *table;
+
+	status = acpi_evaluate_integer(handle, "_GSB", NULL, &gsb);
+	if (ACPI_SUCCESS(status)) {
+		*gsi_base = (u32)gsb;
+		return 0;
+	}
+
+	status = acpi_evaluate_object(handle, "_MAT", NULL, &buffer);
+	if (ACPI_FAILURE(status) || !buffer.length || !buffer.pointer)
+		return -1;
+
+	obj = buffer.pointer;
+	if (obj->type != ACPI_TYPE_BUFFER)
+		goto out;
+
+	table = obj->buffer.pointer;
+	switch (((acpi_table_entry_header *)table)->type) {
+	case ACPI_MADT_IOSAPIC:
+		*gsi_base = ((struct acpi_table_iosapic *)table)->global_irq_base;
+		result = 0;
+		break;
+	case ACPI_MADT_IOAPIC:
+		*gsi_base = ((struct acpi_table_ioapic *)table)->global_irq_base;
+		result = 0;
+		break;
+	default:
+		break;
+	}
+ out:
+	acpi_os_free(buffer.pointer);
+	return result;
+}
+
+static acpi_status
+ioapic_add(acpi_handle handle, u32 lvl, void *context, void **rv)
+{
+	acpi_status status;
+	unsigned long sta;
+	acpi_handle tmp;
+	struct pci_dev *pdev;
+	u32 gsi_base;
+	u64 phys_addr;
+
+	/* Evaluate _STA if present */
+	status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
+	if (ACPI_SUCCESS(status) && sta != ACPI_STA_ALL)
+		return AE_CTRL_DEPTH;
+
+	/* Scan only PCI bus scope */
+	status = acpi_get_handle(handle, "_HID", &tmp);
+	if (ACPI_SUCCESS(status))
+		return AE_CTRL_DEPTH;
+
+	if (get_gsi_base(handle, &gsi_base))
+		return AE_OK;
+
+	pdev = get_apic_pci_info(handle);
+	if (!pdev)
+		return AE_OK;
+
+	if (pci_enable_device(pdev)) {
+		pci_dev_put(pdev);
+		return AE_OK;
+	}
+
+	pci_set_master(pdev);
+
+	if (pci_request_region(pdev, 0, "I/O APIC(acpiphp)")) {
+		pci_disable_device(pdev);
+		pci_dev_put(pdev);
+		return AE_OK;
+	}
+
+	phys_addr = pci_resource_start(pdev, 0);
+	if (acpi_register_ioapic(handle, phys_addr, gsi_base)) {
+		pci_release_region(pdev, 0);
+		pci_disable_device(pdev);
+		pci_dev_put(pdev);
+		return AE_OK;
+	}
+
+	return AE_OK;
+}
+
+static int acpiphp_configure_ioapics(acpi_handle handle)
+{
+	acpi_walk_namespace(ACPI_TYPE_DEVICE, handle,
+			    ACPI_UINT32_MAX, ioapic_add, NULL, NULL);
+	return 0;
+}
 
 static int power_on_slot(struct acpiphp_slot *slot)
 {
···
 	acpi_status status;
 	struct acpiphp_func *func;
 	struct list_head *l;
-	struct acpi_object_list arg_list;
-	union acpi_object arg;
 
 	int retval = 0;
 
···
 	list_for_each (l, &slot->funcs) {
 		func = list_entry(l, struct acpiphp_func, sibling);
 
-		if (func->pci_dev && (func->flags & FUNC_HAS_PS3)) {
+		if (func->flags & FUNC_HAS_PS3) {
 			status = acpi_evaluate_object(func->handle, "_PS3", NULL, NULL);
 			if (ACPI_FAILURE(status)) {
 				warn("%s: _PS3 failed\n", __FUNCTION__);
-				retval = -1;
-				goto err_exit;
-			} else
-				break;
-		}
-	}
-
-	list_for_each (l, &slot->funcs) {
-		func = list_entry(l, struct acpiphp_func, sibling);
-
-		/* We don't want to call _EJ0 on non-existing functions. */
-		if (func->pci_dev && (func->flags & FUNC_HAS_EJ0)) {
-			/* _EJ0 method take one argument */
-			arg_list.count = 1;
-			arg_list.pointer = &arg;
-			arg.type = ACPI_TYPE_INTEGER;
-			arg.integer.value = 1;
-
-			status = acpi_evaluate_object(func->handle, "_EJ0", &arg_list, NULL);
-			if (ACPI_FAILURE(status)) {
-				warn("%s: _EJ0 failed\n", __FUNCTION__);
 				retval = -1;
 				goto err_exit;
 			} else
···
  */
 static int enable_device(struct acpiphp_slot *slot)
 {
-	u8 bus;
 	struct pci_dev *dev;
-	struct pci_bus *child;
+	struct pci_bus *bus = slot->bridge->pci_bus;
 	struct list_head *l;
 	struct acpiphp_func *func;
 	int retval = 0;
-	int num;
+	int num, max, pass;
 
 	if (slot->flags & SLOT_ENABLED)
 		goto err_exit;
 
 	/* sanity check: dev should be NULL when hot-plugged in */
-	dev = pci_find_slot(slot->bridge->bus, PCI_DEVFN(slot->device, 0));
+	dev = pci_get_slot(bus, PCI_DEVFN(slot->device, 0));
 	if (dev) {
 		/* This case shouldn't happen */
 		err("pci_dev structure already exists.\n");
+		pci_dev_put(dev);
 		retval = -1;
 		goto err_exit;
 	}
 
-	/* allocate resources to device */
-	retval = acpiphp_configure_slot(slot);
-	if (retval)
-		goto err_exit;
-
-	/* returned `dev' is the *first function* only! */
-	num = pci_scan_slot(slot->bridge->pci_bus, PCI_DEVFN(slot->device, 0));
-	if (num)
-		pci_bus_add_devices(slot->bridge->pci_bus);
-	dev = pci_find_slot(slot->bridge->bus, PCI_DEVFN(slot->device, 0));
-
-	if (!dev) {
+	num = pci_scan_slot(bus, PCI_DEVFN(slot->device, 0));
+	if (num == 0) {
 		err("No new device found\n");
 		retval = -1;
 		goto err_exit;
 	}
 
-	if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
-		pci_read_config_byte(dev, PCI_SECONDARY_BUS, &bus);
-		child = (struct pci_bus*) pci_add_new_bus(dev->bus, dev, bus);
-		pci_do_scan_bus(child);
+	max = bus->secondary;
+	for (pass = 0; pass < 2; pass++) {
+		list_for_each_entry(dev, &bus->devices, bus_list) {
+			if (PCI_SLOT(dev->devfn) != slot->device)
+				continue;
+			if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE ||
+			    dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)
+				max = pci_scan_bridge(bus, dev, max, pass);
+		}
 	}
+
+	pci_bus_assign_resources(bus);
+	pci_bus_add_devices(bus);
 
 	/* associate pci_dev to our representation */
 	list_for_each (l, &slot->funcs) {
 		func = list_entry(l, struct acpiphp_func, sibling);
-
-		func->pci_dev = pci_find_slot(slot->bridge->bus,
-					      PCI_DEVFN(slot->device,
+		func->pci_dev = pci_get_slot(bus, PCI_DEVFN(slot->device,
 							func->function));
-		if (!func->pci_dev)
-			continue;
-
-		/* configure device */
-		retval = acpiphp_configure_function(func);
-		if (retval)
-			goto err_exit;
 	}
 
 	slot->flags |= SLOT_ENABLED;
-
-	dbg("Available resources:\n");
-	acpiphp_dump_resource(slot->bridge);
 
  err_exit:
 	return retval;
···
 
 	list_for_each (l, &slot->funcs) {
 		func = list_entry(l, struct acpiphp_func, sibling);
+		if (!func->pci_dev)
+			continue;
 
-		if (func->pci_dev)
-			acpiphp_unconfigure_function(func);
+		pci_remove_bus_device(func->pci_dev);
+		pci_dev_put(func->pci_dev);
+		func->pci_dev = NULL;
 	}
 
 	slot->flags &= (~SLOT_ENABLED);
···
 }
 
 /**
+ * acpiphp_eject_slot - physically eject the slot
+ */
+static int acpiphp_eject_slot(struct acpiphp_slot *slot)
+{
+	acpi_status status;
+	struct acpiphp_func *func;
+	struct list_head *l;
+	struct acpi_object_list arg_list;
+	union acpi_object arg;
+
+	list_for_each (l, &slot->funcs) {
+		func = list_entry(l, struct acpiphp_func, sibling);
+
+		/* We don't want to call _EJ0 on non-existing functions. */
+		if ((func->flags & FUNC_HAS_EJ0)) {
+			/* _EJ0 method take one argument */
+			arg_list.count = 1;
+			arg_list.pointer = &arg;
+			arg.type = ACPI_TYPE_INTEGER;
+			arg.integer.value = 1;
+
+			status = acpi_evaluate_object(func->handle, "_EJ0", &arg_list, NULL);
+			if (ACPI_FAILURE(status)) {
+				warn("%s: _EJ0 failed\n", __FUNCTION__);
+				return -1;
+			} else
+				break;
+		}
+	}
+	return 0;
+}
+
+/**
  * acpiphp_check_bridge - re-enumerate devices
  *
  * Iterate over all slots under this bridge and make sure that if a
···
 			if (retval) {
 				err("Error occurred in disabling\n");
 				goto err_exit;
+			} else {
+				acpiphp_eject_slot(slot);
 			}
 			disabled++;
 		} else {
···
 
  err_exit:
 	return retval;
+}
+
+static void program_hpp(struct pci_dev *dev, struct acpiphp_bridge *bridge)
+{
+	u16 pci_cmd, pci_bctl;
+	struct pci_dev *cdev;
+
+	/* Program hpp values for this device */
+	if (!(dev->hdr_type == PCI_HEADER_TYPE_NORMAL ||
+			(dev->hdr_type == PCI_HEADER_TYPE_BRIDGE &&
+			(dev->class >> 8) == PCI_CLASS_BRIDGE_PCI)))
+		return;
+	pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE,
+			bridge->hpp.cache_line_size);
+	pci_write_config_byte(dev, PCI_LATENCY_TIMER,
+			bridge->hpp.latency_timer);
+	pci_read_config_word(dev, PCI_COMMAND, &pci_cmd);
+	if (bridge->hpp.enable_SERR)
+		pci_cmd |= PCI_COMMAND_SERR;
+	else
+		pci_cmd &= ~PCI_COMMAND_SERR;
+	if (bridge->hpp.enable_PERR)
+		pci_cmd |= PCI_COMMAND_PARITY;
+	else
+		pci_cmd &= ~PCI_COMMAND_PARITY;
+	pci_write_config_word(dev, PCI_COMMAND, pci_cmd);
+
+	/* Program bridge control value and child devices */
+	if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) {
+		pci_write_config_byte(dev, PCI_SEC_LATENCY_TIMER,
+				bridge->hpp.latency_timer);
+		pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &pci_bctl);
+		if (bridge->hpp.enable_SERR)
+			pci_bctl |= PCI_BRIDGE_CTL_SERR;
+		else
+			pci_bctl &= ~PCI_BRIDGE_CTL_SERR;
+		if (bridge->hpp.enable_PERR)
+			pci_bctl |= PCI_BRIDGE_CTL_PARITY;
+		else
+			pci_bctl &= ~PCI_BRIDGE_CTL_PARITY;
+		pci_write_config_word(dev, PCI_BRIDGE_CONTROL, pci_bctl);
+		if (dev->subordinate) {
+			list_for_each_entry(cdev, &dev->subordinate->devices,
+					bus_list)
+				program_hpp(cdev, bridge);
+		}
+	}
+}
+
+static void acpiphp_set_hpp_values(acpi_handle handle, struct pci_bus *bus)
+{
+	struct acpiphp_bridge bridge;
+	struct pci_dev *dev;
+
+	memset(&bridge, 0, sizeof(bridge));
+	bridge.handle = handle;
+	decode_hpp(&bridge);
+	list_for_each_entry(dev, &bus->devices, bus_list)
+		program_hpp(dev, &bridge);
+
+}
+
+/*
+ * Remove devices for which we could not assign resources, call
+ * arch specific code to fix-up the bus
+ */
+static void acpiphp_sanitize_bus(struct pci_bus *bus)
+{
+	struct pci_dev *dev;
+	int i;
+	unsigned long type_mask = IORESOURCE_IO | IORESOURCE_MEM;
+
+	list_for_each_entry(dev, &bus->devices, bus_list) {
+		for (i=0; i<PCI_BRIDGE_RESOURCES; i++) {
+			struct resource *res = &dev->resource[i];
+			if ((res->flags & type_mask) && !res->start &&
+					res->end) {
+				/* Could not assign a required resources
+				 * for this device, remove it */
+				pci_remove_bus_device(dev);
+				break;
+			}
+		}
+	}
+}
+
+/* Program resources in newly inserted bridge */
+static int acpiphp_configure_bridge (acpi_handle handle)
+{
+	struct acpi_pci_id pci_id;
+	struct pci_bus *bus;
+
+	if (ACPI_FAILURE(acpi_get_pci_id(handle, &pci_id))) {
+		err("cannot get PCI domain and bus number for bridge\n");
+		return -EINVAL;
+	}
+	bus = pci_find_bus(pci_id.segment, pci_id.bus);
+	if (!bus) {
+		err("cannot find bus %d:%d\n",
+				pci_id.segment, pci_id.bus);
+		return -EINVAL;
+	}
+
+	pci_bus_size_bridges(bus);
+	pci_bus_assign_resources(bus);
+	acpiphp_sanitize_bus(bus);
+	acpiphp_set_hpp_values(handle, bus);
+	pci_enable_bridges(bus);
+	acpiphp_configure_ioapics(handle);
+	return 0;
+}
+
+static void handle_bridge_insertion(acpi_handle handle, u32 type)
+{
+	struct acpi_device *device, *pdevice;
+	acpi_handle phandle;
+
+	if ((type != ACPI_NOTIFY_BUS_CHECK) &&
+			(type != ACPI_NOTIFY_DEVICE_CHECK)) {
+		err("unexpected notification type %d\n", type);
+		return;
+	}
+
+	acpi_get_parent(handle, &phandle);
+	if (acpi_bus_get_device(phandle, &pdevice)) {
+		dbg("no parent device, assuming NULL\n");
+		pdevice = NULL;
+	}
+	if (acpi_bus_add(&device, pdevice, handle, ACPI_BUS_TYPE_DEVICE)) {
+		err("cannot add bridge to acpi list\n");
+		return;
+	}
+	if (!acpiphp_configure_bridge(handle) &&
+		!acpi_bus_start(device))
+		add_bridge(handle);
+	else
+		err("cannot configure and start bridge\n");
+
 }
 
 /*
···
 	char objname[64];
 	struct acpi_buffer buffer = { .length = sizeof(objname),
 				      .pointer = objname };
+	struct acpi_device *device;
 
-	bridge = (struct acpiphp_bridge *)context;
+	if (acpi_bus_get_device(handle, &device)) {
+		/* This bridge must have just been physically inserted */
+		handle_bridge_insertion(handle, type);
+		return;
+	}
+
+	bridge = acpiphp_handle_to_bridge(handle);
+	if (!bridge) {
+		err("cannot get bridge info\n");
+		return;
+	}
 
 	acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer);
 
···
 	}
 }
 
-
 /**
  * handle_hotplug_event_func - handle ACPI event on functions (i.e. slots)
  *
···
 	case ACPI_NOTIFY_EJECT_REQUEST:
 		/* request device eject */
 		dbg("%s: Device eject notify on %s\n", __FUNCTION__, objname);
-		acpiphp_disable_slot(func->slot);
+		if (!(acpiphp_disable_slot(func->slot)))
+			acpiphp_eject_slot(func->slot);
 		break;
 
 	default:
···
 	}
 }
 
+static int is_root_bridge(acpi_handle handle)
+{
+	acpi_status status;
+	struct acpi_device_info *info;
+	struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
+	int i;
+
+	status = acpi_get_object_info(handle, &buffer);
+	if (ACPI_SUCCESS(status)) {
+		info = buffer.pointer;
+		if ((info->valid & ACPI_VALID_HID) &&
+			!strcmp(PCI_ROOT_HID_STRING,
+					info->hardware_id.value)) {
+			acpi_os_free(buffer.pointer);
+			return 1;
+		}
+		if (info->valid & ACPI_VALID_CID) {
+			for (i=0; i < info->compatibility_id.count; i++) {
+				if (!strcmp(PCI_ROOT_HID_STRING,
+					info->compatibility_id.id[i].value)) {
+					acpi_os_free(buffer.pointer);
+					return 1;
+				}
+			}
+		}
+	}
+	return 0;
+}
+
+static acpi_status
+find_root_bridges(acpi_handle handle, u32 lvl, void *context, void **rv)
+{
+	int *count = (int *)context;
+
+	if (is_root_bridge(handle)) {
+		acpi_install_notify_handler(handle, ACPI_SYSTEM_NOTIFY,
+				handle_hotplug_event_bridge, NULL);
+			(*count)++;
+	}
+	return AE_OK ;
+}
 
 static struct acpi_pci_driver acpi_pci_hp_driver = {
 	.add =		add_bridge,
···
  */
 int __init acpiphp_glue_init(void)
 {
-	int num;
+	int num = 0;
 
-	if (list_empty(&pci_root_buses))
-		return -1;
-
-	num = acpi_pci_register_driver(&acpi_pci_hp_driver);
+	acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT,
+			ACPI_UINT32_MAX, find_root_bridges, &num, NULL);
 
 	if (num <= 0)
 		return -1;
+	else
+		acpi_pci_register_driver(&acpi_pci_hp_driver);
 
 	return 0;
 }
···
  */
 void __exit acpiphp_glue_exit(void)
 {
-	struct list_head *l1, *l2, *n1, *n2;
-	struct acpiphp_bridge *bridge;
-	struct acpiphp_slot *slot, *next;
-	struct acpiphp_func *func;
-	acpi_status status;
-
-	list_for_each_safe (l1, n1, &bridge_list) {
-		bridge = (struct acpiphp_bridge *)l1;
-		slot = bridge->slots;
-		while (slot) {
-			next = slot->next;
-			list_for_each_safe (l2, n2, &slot->funcs) {
-				func = list_entry(l2, struct acpiphp_func, sibling);
-				acpiphp_free_resource(&func->io_head);
-				acpiphp_free_resource(&func->mem_head);
-				acpiphp_free_resource(&func->p_mem_head);
-				acpiphp_free_resource(&func->bus_head);
-				status = acpi_remove_notify_handler(func->handle,
-								    ACPI_SYSTEM_NOTIFY,
-								    handle_hotplug_event_func);
-				if (ACPI_FAILURE(status))
-					err("failed to remove notify handler\n");
-				kfree(func);
-			}
-			kfree(slot);
-			slot = next;
-		}
-		status = acpi_remove_notify_handler(bridge->handle, ACPI_SYSTEM_NOTIFY,
-						    handle_hotplug_event_bridge);
-		if (ACPI_FAILURE(status))
-			err("failed to remove notify handler\n");
-
-		acpiphp_free_resource(&bridge->io_head);
-		acpiphp_free_resource(&bridge->mem_head);
-		acpiphp_free_resource(&bridge->p_mem_head);
-		acpiphp_free_resource(&bridge->bus_head);
-
-		kfree(bridge);
-	}
-
 	acpi_pci_unregister_driver(&acpi_pci_hp_driver);
 }
 
···
 
 	list_for_each (node, &bridge_list) {
 		bridge = (struct acpiphp_bridge *)node;
-		dbg("Bus%d %dslot(s)\n", bridge->bus, bridge->nr_slots);
+		dbg("Bus %04x:%02x has %d slot%s\n",
+				pci_domain_nr(bridge->pci_bus),
+				bridge->pci_bus->number, bridge->nr_slots,
+				bridge->nr_slots == 1 ? "" : "s");
 		num_slots += bridge->nr_slots;
 	}
 
-	dbg("Total %dslots\n", num_slots);
+	dbg("Total %d slots\n", num_slots);
 	return num_slots;
 }
 
···
 	return retval;
 }
 
-
 /**
  * acpiphp_disable_slot - power off slot
  */
···
 	if (retval)
 		goto err_exit;
 
-	acpiphp_resource_sort_and_combine(&slot->bridge->io_head);
-	acpiphp_resource_sort_and_combine(&slot->bridge->mem_head);
-	acpiphp_resource_sort_and_combine(&slot->bridge->p_mem_head);
-	acpiphp_resource_sort_and_combine(&slot->bridge->bus_head);
-	dbg("Available resources:\n");
-	acpiphp_dump_resource(slot->bridge);
-
  err_exit:
 	up(&slot->crit_sect);
 	return retval;
···
  */
 u8 acpiphp_get_power_status(struct acpiphp_slot *slot)
 {
-	unsigned int sta;
-
-	sta = get_slot_status(slot);
-
-	return (sta & ACPI_STA_ENABLED) ? 1 : 0;
+	return (slot->flags & SLOT_POWEREDON);
 }
 
 
···
 u32 acpiphp_get_address(struct acpiphp_slot *slot)
 {
 	u32 address;
+	struct pci_bus *pci_bus = slot->bridge->pci_bus;
 
-	address = ((slot->bridge->seg) << 16) |
-		  ((slot->bridge->bus) << 8) |
+	address = (pci_domain_nr(pci_bus) << 16) |
+		  (pci_bus->number << 8) |
 		  slot->device;
 
 	return address;

drivers/pci/hotplug/acpiphp_pci.c

···
-/*
- * ACPI PCI HotPlug PCI configuration space management
- *
- * Copyright (C) 1995,2001 Compaq Computer Corporation
- * Copyright (C) 2001 Greg Kroah-Hartman ([e-mail])
- * Copyright (C) 2001,2002 IBM Corp.
- * Copyright (C) 2002 Takayoshi Kochi ([e-mail])
- * Copyright (C) 2002 Hiroshi Aono ([e-mail])
- * Copyright (C) 2002 NEC Corporation
- *
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT.  See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Send feedback to <[e-mail]>
- *
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/acpi.h>
-#include "../pci.h"
-#include "pci_hotplug.h"
-#include "acpiphp.h"
-
-#define MY_NAME "acpiphp_pci"
-
-
-/* allocate mem/pmem/io resource to a new function */
-static int init_config_space (struct acpiphp_func *func)
-{
-	u32 bar, len;
-	u32 address[] = {
-		PCI_BASE_ADDRESS_0,
-		PCI_BASE_ADDRESS_1,
-		PCI_BASE_ADDRESS_2,
-		PCI_BASE_ADDRESS_3,
-		PCI_BASE_ADDRESS_4,
-		PCI_BASE_ADDRESS_5,
-		0
-	};
-	int count;
-	struct acpiphp_bridge *bridge;
-	struct pci_resource *res;
-	struct pci_bus *pbus;
-	int bus, device, function;
-	unsigned int devfn;
-	u16 tmp;
-
-	bridge = func->slot->bridge;
-	pbus = bridge->pci_bus;
-	bus = bridge->bus;
-	device = func->slot->device;
-	function = func->function;
-	devfn = PCI_DEVFN(device, function);
-
-	for (count = 0; address[count]; count++) {	/* for 6 BARs */
-		pci_bus_write_config_dword(pbus, devfn,
-					   address[count], 0xFFFFFFFF);
-		pci_bus_read_config_dword(pbus, devfn, address[count], &bar);
-
-		if (!bar)	/* This BAR is not implemented */
-			continue;
-
-		dbg("Device %02x.%02x BAR %d wants %x\n", device, function, count, bar);
-
-		if (bar & PCI_BASE_ADDRESS_SPACE_IO) {
-			/* This is IO */
-
-			len = bar & (PCI_BASE_ADDRESS_IO_MASK & 0xFFFF);
-			len = len & ~(len - 1);
-
-			dbg("len in IO %x, BAR %d\n", len, count);
-
-			spin_lock(&bridge->res_lock);
-			res = acpiphp_get_io_resource(&bridge->io_head, len);
-			spin_unlock(&bridge->res_lock);
-
-			if (!res) {
-				err("cannot allocate requested io for %02x:%02x.%d len %x\n",
-				    bus, device, function, len);
-				return -1;
-			}
-			pci_bus_write_config_dword(pbus, devfn,
-						   address[count],
-						   (u32)res->base);
-			res->next = func->io_head;
-			func->io_head = res;
-
-		} else {
-			/* This is Memory */
-			if (bar & PCI_BASE_ADDRESS_MEM_PREFETCH) {
-				/* pfmem */
-
-				len = bar & 0xFFFFFFF0;
-				len = ~len + 1;
-
-				dbg("len in PFMEM %x, BAR %d\n", len, count);
-
-				spin_lock(&bridge->res_lock);
-				res = acpiphp_get_resource(&bridge->p_mem_head, len);
-				spin_unlock(&bridge->res_lock);
-
-				if (!res) {
-					err("cannot allocate requested pfmem for %02x:%02x.%d len %x\n",
-					    bus, device, function, len);
-					return -1;
-				}
-
-				pci_bus_write_config_dword(pbus, devfn,
-							   address[count],
-							   (u32)res->base);
-
-				if (bar & PCI_BASE_ADDRESS_MEM_TYPE_64) {	/* takes up another dword */
-					dbg("inside the pfmem 64 case, count %d\n", count);
-					count += 1;
-					pci_bus_write_config_dword(pbus, devfn,
-								   address[count],
-								   (u32)(res->base >> 32));
-				}
-
-				res->next = func->p_mem_head;
-				func->p_mem_head = res;
-
-			} else {
-				/* regular memory */
-
-				len = bar & 0xFFFFFFF0;
-				len = ~len + 1;
-
-				dbg("len in MEM %x, BAR %d\n", len, count);
-
-				spin_lock(&bridge->res_lock);
-				res = acpiphp_get_resource(&bridge->mem_head, len);
-				spin_unlock(&bridge->res_lock);
-
-				if (!res) {
-					err("cannot allocate requested pfmem for %02x:%02x.%d len %x\n",
-					    bus, device, function, len);
-					return -1;
-				}
-
-				pci_bus_write_config_dword(pbus, devfn,
-							   address[count],
-							   (u32)res->base);
-
-				if (bar & PCI_BASE_ADDRESS_MEM_TYPE_64) {
-					/* takes up another dword */
-					dbg("inside mem 64 case, reg. mem, count %d\n", count);
-					count += 1;
-					pci_bus_write_config_dword(pbus, devfn,
-								   address[count],
-								   (u32)(res->base >> 32));
-				}
-
-				res->next = func->mem_head;
-				func->mem_head = res;
-
-			}
-		}
-	}
-
-	/* disable expansion rom */
-	pci_bus_write_config_dword(pbus, devfn, PCI_ROM_ADDRESS, 0x00000000);
-
-	/* set PCI parameters from _HPP */
-	pci_bus_write_config_byte(pbus, devfn, PCI_CACHE_LINE_SIZE,
-				  bridge->hpp.cache_line_size);
-	pci_bus_write_config_byte(pbus, devfn, PCI_LATENCY_TIMER,
-				  bridge->hpp.latency_timer);
-
-	pci_bus_read_config_word(pbus, devfn, PCI_COMMAND, &tmp);
-	if (bridge->hpp.enable_SERR)
-		tmp |= PCI_COMMAND_SERR;
-	if (bridge->hpp.enable_PERR)
-		tmp |= PCI_COMMAND_PARITY;
-	pci_bus_write_config_word(pbus, devfn, PCI_COMMAND, tmp);
-
-	return 0;
-}
-
-/* detect_used_resource - subtract resource under dev from bridge */
-static int detect_used_resource (struct acpiphp_bridge *bridge, struct pci_dev *dev)
-{
-	int count;
-
-	dbg("Device %s\n", pci_name(dev));
-
-	for (count = 0; count < DEVICE_COUNT_RESOURCE; count++) {
-		struct pci_resource *res;
-		struct pci_resource **head;
-		unsigned long base = dev->resource[count].start;
-		unsigned long len = dev->resource[count].end - base + 1;
-		unsigned long flags = dev->resource[count].flags;
-
-		if (!flags)
-			continue;
-
-		dbg("BAR[%d] 0x%lx - 0x%lx (0x%lx)\n", count, base,
-				base + len - 1, flags);
-
-		if (flags & IORESOURCE_IO) {
-			head = &bridge->io_head;
-		} else if (flags & IORESOURCE_PREFETCH) {
-			head = &bridge->p_mem_head;
-		} else {
-			head = &bridge->mem_head;
-		}
-
-		spin_lock(&bridge->res_lock);
-		res = acpiphp_get_resource_with_base(head, base, len);
-		spin_unlock(&bridge->res_lock);
-		if (res)
-			kfree(res);
-	}
-
-	return 0;
-}
-
-
-/**
- * acpiphp_detect_pci_resource - detect resources under bridge
- * @bridge: detect all resources already used under this bridge
- *
- * collect all resources already allocated for all devices under a bridge.
- */
-int acpiphp_detect_pci_resource (struct acpiphp_bridge *bridge)
-{
-	struct list_head *l;
-	struct pci_dev *dev;
-
-	list_for_each (l, &bridge->pci_bus->devices) {
-		dev = pci_dev_b(l);
-		detect_used_resource(bridge, dev);
-	}
-
-	return 0;
-}
-
-
-/**
- * acpiphp_init_slot_resource - gather resource usage information of a slot
- * @slot: ACPI slot object to be checked, should have valid pci_dev member
- *
- * TBD: PCI-to-PCI bridge case
- *      use pci_dev->resource[]
- */
-int acpiphp_init_func_resource (struct acpiphp_func *func)
-{
-	u64 base;
-	u32 bar, len;
-	u32 address[] = {
-		PCI_BASE_ADDRESS_0,
-		PCI_BASE_ADDRESS_1,
-		PCI_BASE_ADDRESS_2,
-		PCI_BASE_ADDRESS_3,
-		PCI_BASE_ADDRESS_4,
-		PCI_BASE_ADDRESS_5,
-		0
-	};
-	int count;
-	struct pci_resource *res;
-	struct pci_dev *dev;
-
-	dev = func->pci_dev;
-	dbg("Hot-pluggable device %s\n", pci_name(dev));
-
-	for (count = 0; address[count]; count++) {	/* for 6 BARs */
-		pci_read_config_dword(dev, address[count], &bar);
-
-		if (!bar)	/* This BAR is not implemented */
-			continue;
-
-		pci_write_config_dword(dev, address[count], 0xFFFFFFFF);
-		pci_read_config_dword(dev, address[count], &len);
-
-		if (len & PCI_BASE_ADDRESS_SPACE_IO) {
-			/* This is IO */
-			base = bar & 0xFFFFFFFC;
-			len = len & (PCI_BASE_ADDRESS_IO_MASK & 0xFFFF);
-			len = len & ~(len - 1);
-
-			dbg("BAR[%d] %08x - %08x (IO)\n", count, (u32)base, (u32)base + len - 1);
-
-			res = acpiphp_make_resource(base, len);
-			if (!res)
-				goto no_memory;
-
-			res->next = func->io_head;
-			func->io_head = res;
-
-		} else {
-			/* This is Memory */
-			base = bar & 0xFFFFFFF0;
-			if (len & PCI_BASE_ADDRESS_MEM_PREFETCH) {
-				/* pfmem */
-
-				len &= 0xFFFFFFF0;
-				len = ~len + 1;
-
-				if (len & PCI_BASE_ADDRESS_MEM_TYPE_64) {	/* takes up another dword */
-					dbg("prefetch mem 64\n");
-					count += 1;
-				}
-				dbg("BAR[%d] %08x - %08x (PMEM)\n", count, (u32)base, (u32)base + len - 1);
-				res = acpiphp_make_resource(base, len);
-				if (!res)
-					goto no_memory;
-
-				res->next = func->p_mem_head;
-				func->p_mem_head = res;
-
-			} else {
-				/* regular memory */
-
-				len &= 0xFFFFFFF0;
-				len = ~len + 1;
-
-				if (len & PCI_BASE_ADDRESS_MEM_TYPE_64) {
-					/* takes up another dword */
-					dbg("mem 64\n");
-					count += 1;
-				}
-				dbg("BAR[%d] %08x - %08x (MEM)\n", count, (u32)base, (u32)base + len - 1);
-				res = acpiphp_make_resource(base, len);
-				if (!res)
-					goto no_memory;
-
-				res->next = func->mem_head;
-				func->mem_head = res;
-
-			}
-		}
-
-		pci_write_config_dword(dev, address[count], bar);
-	}
-#if 1
-	acpiphp_dump_func_resource(func);
-#endif
-
-	return 0;
-
- no_memory:
-	err("out of memory\n");
-	acpiphp_free_resource(&func->io_head);
-	acpiphp_free_resource(&func->mem_head);
-	acpiphp_free_resource(&func->p_mem_head);
-
-	return -1;
-}
-
-
-/**
- * acpiphp_configure_slot - allocate PCI resources
- * @slot: slot to be configured
- *
- * initializes a PCI functions on a device inserted
- * into the slot
- *
- */
-int acpiphp_configure_slot (struct acpiphp_slot *slot)
-{
-	struct acpiphp_func *func;
-	struct list_head *l;
-	u8 hdr;
-	u32 dvid;
-	int retval = 0;
-	int is_multi = 0;
-
-	pci_bus_read_config_byte(slot->bridge->pci_bus,
-				 PCI_DEVFN(slot->device, 0),
-				 PCI_HEADER_TYPE, &hdr);
-
-	if (hdr & 0x80)
-		is_multi = 1;
-
-	list_for_each (l, &slot->funcs) {
-		func = list_entry(l, struct acpiphp_func, sibling);
-		if (is_multi || func->function == 0) {
-			pci_bus_read_config_dword(slot->bridge->pci_bus,
-						  PCI_DEVFN(slot->device,
-							    func->function),
-						  PCI_VENDOR_ID, &dvid);
-			if (dvid != 0xffffffff) {
-				retval = init_config_space(func);
-				if (retval)
-					break;
-			}
-		}
-	}
-
-	return retval;
-}
-
-/**
- * acpiphp_configure_function - configure PCI function
- * @func: function to be configured
- *
- * initializes a PCI functions on a device inserted
- * into the slot
- *
- */
-int acpiphp_configure_function (struct acpiphp_func *func)
-{
-	/* all handled by the pci core now */
-	return 0;
-}
-
-/**
- * acpiphp_unconfigure_function - unconfigure PCI function
- * @func: function to be unconfigured
- *
- */
-void acpiphp_unconfigure_function (struct acpiphp_func *func)
-{
-	struct acpiphp_bridge *bridge;
-
-	/* if pci_dev is NULL, ignore it */
-	if (!func->pci_dev)
-		return;
-
-	pci_remove_bus_device(func->pci_dev);
-
-	/* free all resources */
-	bridge = func->slot->bridge;
-
-	spin_lock(&bridge->res_lock);
-	acpiphp_move_resource(&func->io_head, &bridge->io_head);
-	acpiphp_move_resource(&func->mem_head, &bridge->mem_head);
-	acpiphp_move_resource(&func->p_mem_head, &bridge->p_mem_head);
-	acpiphp_move_resource(&func->bus_head, &bridge->bus_head);
-	spin_unlock(&bridge->res_lock);
-}

drivers/pci/hotplug/acpiphp_res.c

···
-/*
- * ACPI PCI HotPlug Utility functions
- *
- * Copyright (C) 1995,2001 Compaq Computer Corporation
- * Copyright (C) 2001 Greg Kroah-Hartman ([e-mail])
- * Copyright (C) 2001 IBM Corp.
- * Copyright (C) 2002 Hiroshi Aono ([e-mail])
- * Copyright (C) 2002 Takayoshi Kochi ([e-mail])
- * Copyright (C) 2002 NEC Corporation
- *
- * All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- * NON INFRINGEMENT.  See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Send feedback to <[e-mail]>, <[e-mail]>
- *
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/proc_fs.h>
-#include <linux/sysctl.h>
-#include <linux/pci.h>
-#include <linux/smp.h>
-#include <linux/smp_lock.h>
-
-#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/errno.h>
-#include <linux/ioport.h>
-#include <linux/slab.h>
-#include <linux/interrupt.h>
-#include <linux/timer.h>
-
-#include <linux/ioctl.h>
-#include <linux/fcntl.h>
-
-#include <linux/list.h>
-
-#include "pci_hotplug.h"
-#include "acpiphp.h"
-
-#define MY_NAME "acpiphp_res"
-
-
-/*
- * sort_by_size - sort nodes by their length, smallest first
- */
-static int sort_by_size(struct pci_resource **head)
-{
-	struct pci_resource *current_res;
-	struct pci_resource *next_res;
-	int out_of_order = 1;
-
-	if (!(*head))
-		return 1;
-
-	if (!((*head)->next))
-		return 0;
-
-	while (out_of_order) {
-		out_of_order = 0;
-
-		/* Special case for swapping list head */
-		if (((*head)->next) &&
-		    ((*head)->length > (*head)->next->length)) {
-			out_of_order++;
-			current_res = *head;
-			*head = (*head)->next;
-			current_res->next = (*head)->next;
-			(*head)->next = current_res;
-		}
-
-		current_res = *head;
-
-		while (current_res->next && current_res->next->next) {
-			if (current_res->next->length > current_res->next->next->length) {
-				out_of_order++;
-				next_res = current_res->next;
-				current_res->next = current_res->next->next;
-				current_res = current_res->next;
-				next_res->next = current_res->next;
-				current_res->next = next_res;
-			} else
-				current_res = current_res->next;
-		}
-	}  /* End of out_of_order loop */
-
-	return 0;
-}
-
-#if 0
-/*
- * sort_by_max_size - sort nodes by their length, largest first
- */
-static int sort_by_max_size(struct pci_resource **head)
-{
-	struct pci_resource *current_res;
-	struct pci_resource *next_res;
-	int out_of_order = 1;
-
-	if (!(*head))
-		return 1;
-
-	if (!((*head)->next))
-		return 0;
-
-	while (out_of_order) {
-		out_of_order = 0;
-
-		/* Special case for swapping list head */
-		if (((*head)->next) &&
-		    ((*head)->length < (*head)->next->length)) {
-			out_of_order++;
-			current_res = *head;
-			*head = (*head)->next;
-			current_res->next = (*head)->next;
-			(*head)->next = current_res;
-		}
-
-		current_res = *head;
-
-		while (current_res->next && current_res->next->next) {
-			if (current_res->next->length < current_res->next->next->length) {
-				out_of_order++;
-				next_res = current_res->next;
-				current_res->next = current_res->next->next;
-				current_res = current_res->next;
-				next_res->next = current_res->next;
-				current_res->next = next_res;
-			} else
-				current_res = current_res->next;
-		}
-	}  /* End of out_of_order loop */
-
-	return 0;
-}
-#endif
-
-/**
- * get_io_resource - get resource for I/O ports
- *
- * this function sorts the resource list by size and then
- * returns the first node of "size" length that is not in the
- * ISA aliasing window.  If it finds a node larger than "size"
- * it will split it up.
- *
- * size must be a power of two.
- *
- * difference from get_resource is handling of ISA aliasing space.
- *
- */
-struct pci_resource *acpiphp_get_io_resource (struct pci_resource **head, u32 size)
-{
-	struct pci_resource *prevnode;
-	struct pci_resource *node;
-	struct pci_resource *split_node;
-	u64 temp_qword;
-
-	if (!(*head))
-		return NULL;
-
-	if (acpiphp_resource_sort_and_combine(head))
-		return NULL;
-
-	if (sort_by_size(head))
-		return NULL;
-
-	for (node = *head; node; node = node->next) {
-		if (node->length < size)
-			continue;
-
-		if (node->base & (size - 1)) {
-			/* this one isn't base aligned properly
-			   so we'll make a new entry and split it up */
-			temp_qword = (node->base | (size-1)) + 1;
-
-			/* Short circuit if adjusted size is too small */
-			if ((node->length - (temp_qword - node->base)) < size)
-				continue;
-
-			split_node = acpiphp_make_resource(node->base, temp_qword - node->base);
-
-			if (!split_node)
-				return NULL;
-
-			node->base = temp_qword;
-			node->length -= split_node->length;
-
-			/* Put it in the list */
-			split_node->next = node->next;
-			node->next = split_node;
-		} /* End of non-aligned base */
-
-		/* Don't need to check if too small since we already did */
-		if (node->length > size) {
-			/* this one is longer than we need
-			   so we'll make a new entry and split it up */
-			split_node = acpiphp_make_resource(node->base + size, node->length - size);
-
-			if (!split_node)
-				return NULL;
-
-			node->length = size;
-
-			/* Put it in the list */
-			split_node->next = node->next;
-			node->next = split_node;
-		}  /* End of too big on top end */
-
-		/* For IO make sure it's not in the ISA aliasing space */
-		if ((node->base & 0x300L) && !(node->base & 0xfffff000))
-			continue;
-
-		/* If we got here, then it is the right size
-		   Now take it out of the list */
-		if (*head == node) {
-			*head = node->next;
-		} else {
-			prevnode = *head;
-			while (prevnode->next != node)
-				prevnode = prevnode->next;
-
-			prevnode->next = node->next;
-		}
-		node->next = NULL;
-		/* Stop looping */
-		break;
-	}
-
-	return node;
-}
-
-
-#if 0
-/**
- * get_max_resource - get the largest resource
- *
- * Gets the largest node that is at least "size" big from the
- * list pointed to by head.  It aligns the node on top and bottom
- * to "size" alignment before returning it.
- */
-static struct pci_resource *acpiphp_get_max_resource (struct pci_resource **head, u32 size)
-{
-	struct pci_resource *max;
-	struct pci_resource *temp;
-	struct pci_resource *split_node;
-	u64 temp_qword;
-
-	if (!(*head))
-		return NULL;
-
-	if (acpiphp_resource_sort_and_combine(head))
-		return NULL;
-
-	if (sort_by_max_size(head))
-		return NULL;
-
-	for (max = *head;max; max = max->next) {
-
-		/* If not big enough we could probably just bail,
-		   instead we'll continue to the next. */
-		if (max->length < size)
-			continue;
-
-		if (max->base & (size - 1)) {
-			/* this one isn't base aligned properly
-			   so we'll make a new entry and split it up */
-			temp_qword = (max->base | (size-1)) + 1;
-
-			/* Short circuit if adjusted size is too small */
-			if ((max->length - (temp_qword - max->base)) < size)
-				continue;
-
-			split_node = acpiphp_make_resource(max->base, temp_qword - max->base);
-
-			if (!split_node)
-				return NULL;
-
-			max->base = temp_qword;
-			max->length -= split_node->length;
-
-			/* Put it next in the list */
-			split_node->next = max->next;
-			max->next = split_node;
-		}
-
-		if ((max->base + max->length) & (size - 1)) {
-			/* this one isn't end aligned properly at the top
-			   so we'll make a new entry and split it up */
-			temp_qword = ((max->base + max->length) & ~(size - 1));
-
-			split_node = acpiphp_make_resource(temp_qword,
-							   max->length + max->base - temp_qword);
-
-			if (!split_node)
-				return NULL;
-
-			max->length -= split_node->length;
-
-			/* Put it in the list */
-			split_node->next = max->next;
-			max->next = split_node;
-		}
-
-		/* Make sure it didn't shrink too much when we aligned it */
-		if (max->length < size)
-			continue;
-
-		/* Now take it out of the list */
-		temp = (struct pci_resource*) *head;
-		if (temp == max) {
-			*head = max->next;
-		} else {
-			while (temp && temp->next != max) {
-				temp = temp->next;
-			}
-
-			temp->next = max->next;
-		}
-
-		max->next = NULL;
-		return max;
-	}
-
-	/* If we get here, we couldn't find one */
-	return NULL;
-}
-#endif
-
-/**
- * get_resource - get resource (mem, pfmem)
- *
- * this function sorts the resource list by size and then
- * returns the first node of "size" length.  If it finds a node
- * larger than "size" it will split it up.
- *
- * size must be a power of two.
- *
- */
-struct pci_resource *acpiphp_get_resource (struct pci_resource **head, u32 size)
-{
-	struct pci_resource *prevnode;
-	struct pci_resource *node;
-	struct pci_resource *split_node;
-	u64 temp_qword;
-
-	if (!(*head))
-		return NULL;
-
-	if (acpiphp_resource_sort_and_combine(head))
-		return NULL;
-
-	if (sort_by_size(head))
-		return NULL;
-
-	for (node = *head; node; node = node->next) {
-		dbg("%s: req_size =%x node=%p, base=%x, length=%x\n",
-		    __FUNCTION__, size, node, (u32)node->base, node->length);
-		if (node->length < size)
-			continue;
-
-		if (node->base & (size - 1)) {
-			dbg("%s: not aligned\n", __FUNCTION__);
-			/* this one isn't base aligned properly
-			   so we'll make a new entry and split it up */
-			temp_qword = (node->base | (size-1)) + 1;
-
-			/* Short circuit if adjusted size is too small */
-			if ((node->length - (temp_qword - node->base)) < size)
-				continue;
-
-			split_node = acpiphp_make_resource(node->base, temp_qword - node->base);
-
-			if (!split_node)
-				return NULL;
-
-			node->base = temp_qword;
-			node->length -= split_node->length;
-
-			/* Put it in the list */
-			split_node->next = node->next;
-			node->next = split_node;
-		} /* End of non-aligned base */
-
-		/* Don't need to check if too small since we already did */
-		if (node->length > size) {
-			dbg("%s: too big\n", __FUNCTION__);
-			/* this one is longer than we need
-			   so we'll make a new entry and split it up */
-			split_node = acpiphp_make_resource(node->base + size, node->length - size);
-
-			if (!split_node)
-				return NULL;
-
-			node->length = size;
-
-			/* Put it in the list */
-			split_node->next = node->next;
-			node->next = split_node;
-		}  /* End of too big on top end */
-
-		dbg("%s: got one!!!\n", __FUNCTION__);
-		/* If we got here, then it is the right size
-		   Now take it out of the list */
-		if (*head == node) {
-			*head = node->next;
-		} else {
-			prevnode = *head;
-			while (prevnode->next != node)
-				prevnode = prevnode->next;
-
-			prevnode->next = node->next;
-		}
-		node->next = NULL;
-		/* Stop looping */
-		break;
-	}
-	return node;
-}
-
-/**
- * get_resource_with_base - get resource with specific base address
- *
- * this function
- * returns the first node of "size" length located at specified base address.
- * If it finds a node larger than "size" it will split it up.
- *
- * size must be a power of two.
- *
- */
-struct pci_resource *acpiphp_get_resource_with_base (struct pci_resource **head, u64 base, u32 size)
-{
-	struct pci_resource *prevnode;
-	struct pci_resource *node;
-	struct pci_resource *split_node;
-	u64 temp_qword;
-
-	if (!(*head))
-		return NULL;
-
-	if (acpiphp_resource_sort_and_combine(head))
-		return NULL;
-
-	for (node = *head; node; node = node->next) {
-		dbg(": 1st req_base=%x req_size =%x node=%p, base=%x, length=%x\n",
-		    (u32)base, size, node, (u32)node->base, node->length);
-		if (node->base > base)
-			continue;
-
-		if ((node->base + node->length) < (base + size))
-			continue;
-
-		if (node->base < base) {
-			dbg(": split 1\n");
-			/* this one isn't base aligned properly
-			   so we'll make a new entry and split it up */
-			temp_qword = base;
-
-			/* Short circuit if adjusted size is too small */
-			if ((node->length - (temp_qword - node->base)) < size)
-				continue;
-
-			split_node = acpiphp_make_resource(node->base, temp_qword - node->base);
-
-			if (!split_node)
-				return NULL;
-
-			node->base = temp_qword;
-			node->length -= split_node->length;
-
-			/* Put it in the list */
-			split_node->next = node->next;
-			node->next = split_node;
-		}
-
-		dbg(": 2nd req_base=%x req_size =%x node=%p, base=%x, length=%x\n",
-		    (u32)base, size, node, (u32)node->base, node->length);
-
-		/* Don't need to check if too small since we already did */
-		if (node->length > size) {
-			dbg(": split 2\n");
-			/* this one is longer than we need
-			   so we'll make a new entry and split it up */
-			split_node = acpiphp_make_resource(node->base + size, node->length - size);
-
-			if (!split_node)
-				return NULL;
-
-			node->length = size;
-
-			/* Put it in the list */
-			split_node->next = node->next;
-			node->next = split_node;
-		}  /* End of too big on top end */
-
-		dbg(": got one!!!\n");
-		/* If we got here, then it is the right size
-		   Now take it out of the list */
-		if (*head == node) {
-			*head = node->next;
-		} else {
-			prevnode = *head;
-			while (prevnode->next != node)
-				prevnode = prevnode->next;
-
-			prevnode->next = node->next;
-		}
-		node->next = NULL;
-		/* Stop looping */
-		break;
-	}
-	return node;
-}
-
-
-/**
- * acpiphp_resource_sort_and_combine
- *
- * Sorts all of the nodes in the list in ascending order by
- * their base addresses.  Also does garbage collection by
- * combining adjacent nodes.
- *
- * returns 0 if success
- */
-int acpiphp_resource_sort_and_combine (struct pci_resource **head)
-{
-	struct pci_resource *node1;
-	struct pci_resource *node2;
-	int out_of_order = 1;
-
-	if (!(*head))
-		return 1;
-
-	dbg("*head->next = %p\n",(*head)->next);
-
-	if (!(*head)->next)
-		return 0;	/* only one item on the list, already sorted! */
-
-	dbg("*head->base = 0x%x\n",(u32)(*head)->base);
-	dbg("*head->next->base = 0x%x\n", (u32)(*head)->next->base);
-	while (out_of_order) {
-		out_of_order = 0;
-
-		/* Special case for swapping list head */
-		if (((*head)->next) &&
-		    ((*head)->base > (*head)->next->base)) {
-			node1 = *head;
-			(*head) = (*head)->next;
-			node1->next = (*head)->next;
-			(*head)->next = node1;
-			out_of_order++;
-		}
-
-		node1 = (*head);
-
-		while (node1->next && node1->next->next) {
-			if (node1->next->base > node1->next->next->base) {
-				out_of_order++;
-				node2 = node1->next;
-				node1->next = node1->next->next;
-				node1 = node1->next;
-				node2->next = node1->next;
-				node1->next = node2;
-			} else
-				node1 = node1->next;
-		}
-	}  /* End of out_of_order loop */
-
-	node1 = *head;
-
-	while (node1 && node1->next) {
-		if ((node1->base + node1->length) == node1->next->base) {
-			/* Combine */
-			dbg("8..\n");
-			node1->length += node1->next->length;
-			node2 = node1->next;
-			node1->next = node1->next->next;
-			kfree(node2);
-		} else
-			node1 = node1->next;
-	}
-
-	return 0;
-}
-
-
-/**
- * acpiphp_make_resource - make resource structure
- * @base: base address of a resource
- * @length: length of a resource
- */
-struct pci_resource *acpiphp_make_resource (u64 base, u32 length)
-{
-	struct pci_resource *res;
-
-	res = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
-	if (res) {
-		memset(res, 0, sizeof(struct pci_resource));
-		res->base = base;
-		res->length = length;
-	}
-
-	return res;
-}
-
-
-/**
- * acpiphp_move_resource - move linked resources from one to another
- * @from: head of linked resource list
- * @to: head of linked resource list
- */
-void acpiphp_move_resource (struct pci_resource **from, struct pci_resource **to)
-{
-	struct pci_resource *tmp;
-
-	while (*from) {
-		tmp = (*from)->next;
-		(*from)->next = *to;
-		*to = *from;
-		*from = tmp;
-	}
-
-	/* *from = NULL is guaranteed */
-}
-
-
-/**
- * acpiphp_free_resource - free all linked resources
- * @res: head of linked resource list
- */
-void acpiphp_free_resource (struct pci_resource **res)
-{
-	struct pci_resource *tmp;
-
-	while (*res) {
-		tmp = (*res)->next;
-		kfree(*res);
-		*res = tmp;
-	}
-
-	/* *res = NULL is guaranteed */
-}
-
-
-/* debug support functions;  will go away sometime :) */
-static void dump_resource(struct pci_resource *head)
-{
-	struct pci_resource *p;
-	int cnt;
-
-	p = head;
-	cnt = 0;
-
-	while (p) {
-		dbg("[%02d] %08x - %08x\n",
-		    cnt++, (u32)p->base, (u32)p->base + p->length - 1);
-		p = p->next;
-	}
-}
-
-void acpiphp_dump_resource(struct acpiphp_bridge *bridge)
-{
-	dbg("I/O resource:\n");
-	dump_resource(bridge->io_head);
-	dbg("MEM resource:\n");
-	dump_resource(bridge->mem_head);
-	dbg("PMEM resource:\n");
-	dump_resource(bridge->p_mem_head);
-	dbg("BUS resource:\n");
-	dump_resource(bridge->bus_head);
-}
-
-void acpiphp_dump_func_resource(struct acpiphp_func *func)
-{
-	dbg("I/O resource:\n");
-	dump_resource(func->io_head);
-	dbg("MEM resource:\n");
-	dump_resource(func->mem_head);
-	dbg("PMEM resource:\n");
-	dump_resource(func->p_mem_head);
-	dbg("BUS resource:\n");
-	dump_resource(func->bus_head);
-}

drivers/pci/hotplug/cpqphp_core.c

···
 static void __iomem *cpqhp_rom_start;
 static int power_mode;
 static int debug;
+static int initialized;
 
 #define DRIVER_VERSION	"0.9.8"
 #define DRIVER_AUTHOR	"Dan Zink <[e-mail]>, Greg Kroah-Hartman <[e-mail]>"
···
 {
 	int loop;
 	int retval = 0;
-	static int initialized = 0;
 
 	if (initialized)
 		return 0;
···
 	}
 
 	// Stop the notification mechanism
-	cpqhp_event_stop_thread();
+	if (initialized)
+		cpqhp_event_stop_thread();
 
 	//unmap the rom address
 	if (cpqhp_rom_start)

drivers/pci/msi.c

···
 static kmem_cache_t* msi_cachep;
 
 static int pci_msi_enable = 1;
-static int last_alloc_vector = 0;
-static int nr_released_vectors = 0;
+static int last_alloc_vector;
+static int nr_released_vectors;
 static int nr_reserved_vectors = NR_HP_RESERVED_VECTORS;
-static int nr_msix_devices = 0;
+static int nr_msix_devices;
 
 #ifndef CONFIG_X86_IO_APIC
 int vector_irq[NR_VECTORS] = { [0 ... NR_VECTORS - 1] = -1};
···
 	return 0;	/* never anything pending */
 }
 
-static void release_msi(unsigned int vector);
-static void shutdown_msi_irq(unsigned int vector)
-{
-	release_msi(vector);
-}
-
-#define shutdown_msi_irq_wo_maskbit	shutdown_msi_irq
-static void enable_msi_irq_wo_maskbit(unsigned int vector) {}
-static void disable_msi_irq_wo_maskbit(unsigned int vector) {}
-static void ack_msi_irq_wo_maskbit(unsigned int vector) {}
-static void end_msi_irq_wo_maskbit(unsigned int vector)
-{
-	move_msi(vector);
-	ack_APIC_irq();
-}
-
 static unsigned int startup_msi_irq_w_maskbit(unsigned int vector)
+{
+	startup_msi_irq_wo_maskbit(vector);
+	unmask_MSI_irq(vector);
+	return 0;	/* never anything pending */
+}
+
+static void shutdown_msi_irq(unsigned int vector)
 {
 	struct msi_desc *entry;
 	unsigned long flags;
 
 	spin_lock_irqsave(&msi_lock, flags);
 	entry = msi_desc[vector];
-	if (!entry || !entry->dev) {
-		spin_unlock_irqrestore(&msi_lock, flags);
-		return 0;
-	}
-	entry->msi_attrib.state = 1;	/* Mark it active */
+	if (entry && entry->dev)
+		entry->msi_attrib.state = 0;	/* Mark it not active */
 	spin_unlock_irqrestore(&msi_lock, flags);
-
-	unmask_MSI_irq(vector);
-	return 0;	/* never anything pending */
 }
 
-#define shutdown_msi_irq_w_maskbit	shutdown_msi_irq
-#define enable_msi_irq_w_maskbit	unmask_MSI_irq
-#define disable_msi_irq_w_maskbit	mask_MSI_irq
-#define ack_msi_irq_w_maskbit		mask_MSI_irq
+static void end_msi_irq_wo_maskbit(unsigned int vector)
+{
+	move_msi(vector);
+	ack_APIC_irq();
+}
 
 static void end_msi_irq_w_maskbit(unsigned int vector)
 {
 	move_msi(vector);
 	unmask_MSI_irq(vector);
 	ack_APIC_irq();
+}
+
+static void do_nothing(unsigned int vector)
+{
 }
 
 /*
···
 static struct hw_interrupt_type msix_irq_type = {
 	.typename	= "PCI-MSI-X",
 	.startup	= startup_msi_irq_w_maskbit,
-	.shutdown	= shutdown_msi_irq_w_maskbit,
-	.enable		= enable_msi_irq_w_maskbit,
-	.disable	= disable_msi_irq_w_maskbit,
-	.ack		= ack_msi_irq_w_maskbit,
+	.shutdown	= shutdown_msi_irq,
+	.enable		= unmask_MSI_irq,
+	.disable	= mask_MSI_irq,
+	.ack		= mask_MSI_irq,
 	.end		= end_msi_irq_w_maskbit,
 	.set_affinity	= set_msi_irq_affinity
 };
···
 static struct hw_interrupt_type msi_irq_w_maskbit_type = {
 	.typename	= "PCI-MSI",
 	.startup	= startup_msi_irq_w_maskbit,
-	.shutdown	= shutdown_msi_irq_w_maskbit,
-	.enable		= enable_msi_irq_w_maskbit,
-	.disable	= disable_msi_irq_w_maskbit,
-	.ack		= ack_msi_irq_w_maskbit,
+	.shutdown	= shutdown_msi_irq,
+	.enable		= unmask_MSI_irq,
+	.disable	= mask_MSI_irq,
+	.ack		= mask_MSI_irq,
 	.end		= end_msi_irq_w_maskbit,
 	.set_affinity	= set_msi_irq_affinity
 };
···
 static struct hw_interrupt_type msi_irq_wo_maskbit_type = {
 	.typename	= "PCI-MSI",
 	.startup	= startup_msi_irq_wo_maskbit,
-	.shutdown	= shutdown_msi_irq_wo_maskbit,
-	.enable		= enable_msi_irq_wo_maskbit,
-	.disable	= disable_msi_irq_wo_maskbit,
-	.ack		= ack_msi_irq_wo_maskbit,
+	.shutdown	= shutdown_msi_irq,
+	.enable		= do_nothing,
+	.disable	= do_nothing,
+	.ack		= do_nothing,
 	.end		= end_msi_irq_wo_maskbit,
 	.set_affinity	= set_msi_irq_affinity
 };
···
 {
 	struct msi_desc *entry;
 
-	entry = (struct msi_desc*) kmem_cache_alloc(msi_cachep, SLAB_KERNEL);
+	entry = kmem_cache_alloc(msi_cachep, SLAB_KERNEL);
 	if (!entry)
 		return NULL;
 
···
 	}
 }
 
-static void release_msi(unsigned int vector)
-{
-	struct msi_desc *entry;
-	unsigned long flags;
-
-	spin_lock_irqsave(&msi_lock, flags);
-	entry = msi_desc[vector];
-	if (entry && entry->dev)
-		entry->msi_attrib.state = 0;	/* Mark it not active */
-	spin_unlock_irqrestore(&msi_lock, flags);
-}
-
 static int msi_free_vector(struct pci_dev* dev, int vector, int reassign)
 {
 	struct msi_desc *entry;
···
 /**
  * pci_enable_msix - configure device's MSI-X capability structure
  * @dev: pointer to the pci_dev data structure of MSI-X device function
- * @data: pointer to an array of MSI-X entries
+ * @entries: pointer to an array of MSI-X entries
  * @nvec: number of MSI-X vectors requested for allocation by device driver
  *
  * Setup the MSI-X capability structure of device function with the number

drivers/pci/msi.h

···
 #define PCI_MSIX_FLAGS_BIRMASK		(7 << 0)
 #define PCI_MSIX_FLAGS_BITMASK		(1 << 0)
 
-#define PCI_MSIX_ENTRY_LOWER_ADDR_OFFSET	0
-#define PCI_MSIX_ENTRY_UPPER_ADDR_OFFSET	4
-#define PCI_MSIX_ENTRY_DATA_OFFSET		8
-#define PCI_MSIX_ENTRY_VECTOR_CTRL_OFFSET	12
 #define PCI_MSIX_ENTRY_SIZE			16
+#define  PCI_MSIX_ENTRY_LOWER_ADDR_OFFSET	0
+#define  PCI_MSIX_ENTRY_UPPER_ADDR_OFFSET	4
+#define  PCI_MSIX_ENTRY_DATA_OFFSET		8
+#define  PCI_MSIX_ENTRY_VECTOR_CTRL_OFFSET	12
 
 #define msi_control_reg(base)		(base + PCI_MSI_FLAGS)
 #define msi_lower_address_reg(base)	(base + PCI_MSI_ADDRESS_LO)
···
 #define msi_enable(control, num) multi_msi_enable(control, num); \
 	control |= PCI_MSI_FLAGS_ENABLE
 
-#define msix_control_reg		msi_control_reg
 #define msix_table_offset_reg(base)	(base + 0x04)
 #define msix_pba_offset_reg(base)	(base + 0x08)
 #define msix_enable(control)	 	control |= PCI_MSIX_FLAGS_ENABLE

drivers/pci/pci-sysfs.c

···
 	char * str = buf;
 	int i;
 	int max = 7;
+	u64 start, end;
 
 	if (pci_dev->subordinate)
 		max = DEVICE_COUNT_RESOURCE;
 
 	for (i = 0; i < max; i++) {
-		str += sprintf(str,"0x%016lx 0x%016lx 0x%016lx\n",
-			       pci_resource_start(pci_dev,i),
-			       pci_resource_end(pci_dev,i),
-			       pci_resource_flags(pci_dev,i));
+		struct resource *res =  &pci_dev->resource[i];
+		pci_resource_to_user(pci_dev, i, res, &start, &end);
+		str += sprintf(str,"0x%016llx 0x%016llx 0x%016llx\n",
+			       (unsigned long long)start,
+			       (unsigned long long)end,
+			       (unsigned long long)res->flags);
 	}
 	return (str - buf);
 }
···
 						       struct device, kobj));
 	struct resource *res = (struct resource *)attr->private;
 	enum pci_mmap_state mmap_type;
+	u64 start, end;
+	int i;
 
-	vma->vm_pgoff += res->start >> PAGE_SHIFT;
+	for (i = 0; i < PCI_ROM_RESOURCE; i++)
+		if (res == &pdev->resource[i])
+			break;
+	if (i >= PCI_ROM_RESOURCE)
+		return -ENODEV;
+
+	/* pci_mmap_page_range() expects the same kind of entry as coming
+	 * from /proc/bus/pci/ which is a "user visible" value. If this is
+	 * different from the resource itself, arch will do necessary fixup.
+	 */
+	pci_resource_to_user(pdev, i, res, &start, &end);
+	vma->vm_pgoff += start >> PAGE_SHIFT;
 	mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io;
 
 	return pci_mmap_page_range(pdev, vma, mmap_type, 0);

drivers/pci/probe.c

···
 	struct pci_bus *child;
 
 	child = pci_alloc_child_bus(parent, dev, busnr);
-	if (child)
+	if (child) {
+		spin_lock(&pci_bus_lock);
 		list_add_tail(&child->node, &parent->children);
+		spin_unlock(&pci_bus_lock);
+	}
 	return child;
 }
 
···
 {
 	struct pci_bus *child;
 	int is_cardbus = (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS);
-	u32 buses;
+	u32 buses, i;
 	u16 bctl;
 
 	pci_read_config_dword(dev, PCI_PRIMARY_BUS, &buses);
···
 			return max;
 		}
 
-		child = pci_alloc_child_bus(bus, dev, busnr);
+		child = pci_add_new_bus(bus, dev, busnr);
 		if (!child)
 			return max;
 		child->primary = buses & 0xFF;
···
 		/* Clear errors */
 		pci_write_config_word(dev, PCI_STATUS, 0xffff);
 
-		child = pci_alloc_child_bus(bus, dev, ++max);
+		/* Prevent assigning a bus number that already exists.
+		 * This can happen when a bridge is hot-plugged */
+		if (pci_find_bus(pci_domain_nr(bus), max+1))
+			return max;
+		child = pci_add_new_bus(bus, dev, ++max);
 		buses = (buses & 0xff000000)
 		      | ((unsigned int)(child->primary)     <<  0)
 		      | ((unsigned int)(child->secondary)   <<  8)
···
 			 * as cards with a PCI-to-PCI bridge can be
 			 * inserted later.
 			 */
-			max += CARDBUS_RESERVE_BUSNR;
+			for (i=0; i<CARDBUS_RESERVE_BUSNR; i++)
+				if (pci_find_bus(pci_domain_nr(bus),
+							max+i+1))
+					break;
+			max += i;
 		}
 		/*
 		 * Set the subordinate bus number to its real value.
···
 	 * and the bus list for fixup functions, etc.
 	 */
 	INIT_LIST_HEAD(&dev->global_list);
+	spin_lock(&pci_bus_lock);
 	list_add_tail(&dev->bus_list, &bus->devices);
+	spin_unlock(&pci_bus_lock);
 
 	return dev;
 }
···
 		pr_debug("PCI: Bus %04x:%02x already known\n", pci_domain_nr(b), bus);
 		goto err_out;
 	}
+	spin_lock(&pci_bus_lock);
 	list_add_tail(&b->node, &pci_root_buses);
+	spin_unlock(&pci_bus_lock);
 
 	memset(dev, 0, sizeof(*dev));
 	dev->parent = parent;
···
 
 	b->subordinate = pci_scan_child_bus(b);
 
-	pci_bus_add_devices(b);
-
 	return b;
 
 sys_create_link_err:
···
 class_dev_reg_err:
 	device_unregister(dev);
 dev_reg_err:
+	spin_lock(&pci_bus_lock);
 	list_del(&b->node);
+	spin_unlock(&pci_bus_lock);
 err_out:
 	kfree(dev);
 	kfree(b);

drivers/pci/proc.c

···
 			dev->device,
 			dev->irq);
 	/* Here should be 7 and not PCI_NUM_RESOURCES as we need to preserve compatibility */
-	for(i=0; i<7; i++)
+	for (i=0; i<7; i++) {
+		u64 start, end;
+		pci_resource_to_user(dev, i, &dev->resource[i], &start, &end);
 		seq_printf(m, LONG_FORMAT,
-			dev->resource[i].start |
+			((unsigned long)start) |
 			(dev->resource[i].flags & PCI_REGION_FLAG_MASK));
-	for(i=0; i<7; i++)
+	}
+	for (i=0; i<7; i++) {
+		u64 start, end;
+		pci_resource_to_user(dev, i, &dev->resource[i], &start, &end);
 		seq_printf(m, LONG_FORMAT,
 			dev->resource[i].start < dev->resource[i].end ?
-			dev->resource[i].end - dev->resource[i].start + 1 : 0);
+			(unsigned long)(end - start) + 1 : 0);
+	}
 	seq_putc(m, '\t');
 	if (drv)
 		seq_printf(m, "%s", drv->name);

drivers/pci/remove.c

···
 
 static void pci_destroy_dev(struct pci_dev *dev)
 {
-	pci_proc_detach_device(dev);
-	pci_remove_sysfs_dev_files(dev);
-	device_unregister(&dev->dev);
+	if (!list_empty(&dev->global_list)) {
+		pci_proc_detach_device(dev);
+		pci_remove_sysfs_dev_files(dev);
+		device_unregister(&dev->dev);
+		spin_lock(&pci_bus_lock);
+		list_del(&dev->global_list);
+		dev->global_list.next = dev->global_list.prev = NULL;
+		spin_unlock(&pci_bus_lock);
+	}
 
 	/* Remove the device from the device lists, and prevent any further
 	 * list accesses from this device */
 	spin_lock(&pci_bus_lock);
 	list_del(&dev->bus_list);
-	list_del(&dev->global_list);
 	dev->bus_list.next = dev->bus_list.prev = NULL;
-	dev->global_list.next = dev->global_list.prev = NULL;
 	spin_unlock(&pci_bus_lock);
 
 	pci_free_resources(dev);

drivers/pci/setup-bus.c

···
 	for (list = head.next; list;) {
 		res = list->res;
 		idx = res - &list->dev->resource[0];
-		pci_assign_resource(list->dev, idx);
+		if (pci_assign_resource(list->dev, idx)) {
+			res->start = 0;
+			res->flags = 0;
+		}
 		tmp = list;
 		list = list->next;
 		kfree(tmp);

drivers/scsi/3w-9xxx.c

···
 } /* End __twa_shutdown() */
 
 /* Wrapper for __twa_shutdown */
-static void twa_shutdown(struct device *dev)
+static void twa_shutdown(struct pci_dev *pdev)
 {
-	struct Scsi_Host *host = pci_get_drvdata(to_pci_dev(dev));
+	struct Scsi_Host *host = pci_get_drvdata(pdev);
 	TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
 
 	__twa_shutdown(tw_dev);
···
 	.id_table	= twa_pci_tbl,
 	.probe		= twa_probe,
 	.remove		= twa_remove,
-	.driver		= {
-		.shutdown = twa_shutdown
-	}
+	.shutdown	= twa_shutdown
 };
 
 /* This function is called on driver initialization */

drivers/scsi/3w-xxxx.c

···
 } /* End __tw_shutdown() */
 
 /* Wrapper for __tw_shutdown */
-static void tw_shutdown(struct device *dev)
+static void tw_shutdown(struct pci_dev *pdev)
 {
-	struct Scsi_Host *host = pci_get_drvdata(to_pci_dev(dev));
+	struct Scsi_Host *host = pci_get_drvdata(pdev);
 	TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
 
 	__tw_shutdown(tw_dev);
···
 	.id_table	= tw_pci_tbl,
 	.probe		= tw_probe,
 	.remove		= tw_remove,
-	.driver		= {
-		.shutdown = tw_shutdown
-	}
+	.shutdown	= tw_shutdown,
 };
 
 /* This function is called on driver initialization */

drivers/scsi/ipr.c

···
 
 /**
  * ipr_shutdown - Shutdown handler.
- * @dev:	device struct
+ * @pdev:	pci device struct
  *
  * This function is invoked upon system shutdown/reboot. It will issue
  * an adapter shutdown to the adapter to flush the write cache.
···
  * Return value:
  * 	none
  **/
-static void ipr_shutdown(struct device *dev)
+static void ipr_shutdown(struct pci_dev *pdev)
 {
-	struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(to_pci_dev(dev));
+	struct ipr_ioa_cfg *ioa_cfg = pci_get_drvdata(pdev);
 	unsigned long lock_flags = 0;
 
 	spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
···
 	.id_table = ipr_pci_table,
 	.probe = ipr_probe,
 	.remove = ipr_remove,
-	.driver = {
-		.shutdown = ipr_shutdown,
-	},
+	.shutdown = ipr_shutdown,
 };
 
 /**

drivers/scsi/megaraid.c

···
 }
 
 static void
-megaraid_shutdown(struct device *dev)
+megaraid_shutdown(struct pci_dev *pdev)
 {
-	struct Scsi_Host *host = pci_get_drvdata(to_pci_dev(dev));
+	struct Scsi_Host *host = pci_get_drvdata(pdev);
 	adapter_t *adapter = (adapter_t *)host->hostdata;
 
 	__megaraid_shutdown(adapter);
···
 	.id_table	= megaraid_pci_tbl,
 	.probe		= megaraid_probe_one,
 	.remove		= __devexit_p(megaraid_remove_one),
-	.driver		= {
-		.shutdown = megaraid_shutdown,
-	},
+	.shutdown	= megaraid_shutdown,
 };
 
 static int __init megaraid_init(void)

include/acpi/acpi_bus.h

···
 typedef int (*acpi_op_match)	(struct acpi_device *device,
 				 struct acpi_driver *driver);
 
+struct acpi_bus_ops {
+	u32 			acpi_op_add:1;
+	u32			acpi_op_remove:1;
+	u32			acpi_op_lock:1;
+	u32			acpi_op_start:1;
+	u32			acpi_op_stop:1;
+	u32			acpi_op_suspend:1;
+	u32			acpi_op_resume:1;
+	u32			acpi_op_scan:1;
+	u32			acpi_op_bind:1;
+	u32			acpi_op_unbind:1;
+	u32			acpi_op_match:1;
+	u32			reserved:21;
+};
+
 struct acpi_device_ops {
 	acpi_op_add		add;
 	acpi_op_remove		remove;
···
 int acpi_bus_receive_event (struct acpi_bus_event *event);
 int acpi_bus_register_driver (struct acpi_driver *driver);
 int acpi_bus_unregister_driver (struct acpi_driver *driver);
-int acpi_bus_scan (struct acpi_device *start);
 int acpi_bus_add (struct acpi_device **child, struct acpi_device *parent,
 		acpi_handle handle, int type);
+int acpi_bus_start (struct acpi_device *device);
 
 
 int acpi_match_ids (struct acpi_device	*device, char	*ids);

include/acpi/acpi_drivers.h

···
 
 struct pci_bus;
 
+acpi_status acpi_get_pci_id (acpi_handle handle, struct acpi_pci_id *id);
 int acpi_pci_bind (struct acpi_device *device);
 int acpi_pci_unbind (struct acpi_device *device);
 int acpi_pci_bind_root (struct acpi_device *device, struct acpi_pci_id *id, struct pci_bus *bus);

include/asm-alpha/pci.h

···
 	/* Nothing to do. */
 }
 
+#ifdef CONFIG_PCI
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+					enum pci_dma_burst_strategy *strat,
+					unsigned long *strategy_parameter)
+{
+	unsigned long cacheline_size;
+	u8 byte;
+
+	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
+	if (byte == 0)
+		cacheline_size = 1024;
+	else
+		cacheline_size = (int) byte * 4;
+
+	*strat = PCI_DMA_BURST_BOUNDARY;
+	*strategy_parameter = cacheline_size;
+}
+#endif
+
 /* TODO: integrate with include/asm-generic/pci.h ? */
 static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
 {

include/asm-arm/pci.h

···
 #define pci_unmap_len(PTR, LEN_NAME)		((PTR)->LEN_NAME)
 #define pci_unmap_len_set(PTR, LEN_NAME, VAL)	(((PTR)->LEN_NAME) = (VAL))
 
+#ifdef CONFIG_PCI
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+					enum pci_dma_burst_strategy *strat,
+					unsigned long *strategy_parameter)
+{
+	*strat = PCI_DMA_BURST_INFINITY;
+	*strategy_parameter = ~0UL;
+}
+#endif
+
 #define HAVE_PCI_MMAP
 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
                                enum pci_mmap_state mmap_state, int write_combine);

include/asm-frv/pci.h

···
  */
 #define PCI_DMA_BUS_IS_PHYS	(1)
 
+#ifdef CONFIG_PCI
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+					enum pci_dma_burst_strategy *strat,
+					unsigned long *strategy_parameter)
+{
+	*strat = PCI_DMA_BURST_INFINITY;
+	*strategy_parameter = ~0UL;
+}
+#endif
+
 /*
  *	These are pretty much arbitary with the CoMEM implementation.
  *	We have the whole address space to ourselves.

include/asm-i386/pci.h

···
 {
 }
 
+#ifdef CONFIG_PCI
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+					enum pci_dma_burst_strategy *strat,
+					unsigned long *strategy_parameter)
+{
+	*strat = PCI_DMA_BURST_INFINITY;
+	*strategy_parameter = ~0UL;
+}
+#endif
+
 #endif /* __KERNEL__ */
 
 /* implement the pci_ DMA API in terms of the generic device dma_ one */

include/asm-ia64/iosapic.h

···
 }
 
 extern void __init iosapic_system_init (int pcat_compat);
-extern void __init iosapic_init (unsigned long address,
+extern int __devinit iosapic_init (unsigned long address,
 				    unsigned int gsi_base);
+#ifdef CONFIG_HOTPLUG
+extern int iosapic_remove (unsigned int gsi_base);
+#endif /* CONFIG_HOTPLUG */
 extern int gsi_to_vector (unsigned int gsi);
 extern int gsi_to_irq (unsigned int gsi);
 extern void iosapic_enable_intr (unsigned int vector);
···
 
 extern void iosapic_pci_fixup (int);
 #ifdef CONFIG_NUMA
-extern void __init map_iosapic_to_node (unsigned int, int);
+extern void __devinit map_iosapic_to_node (unsigned int, int);
 #endif
 #else
 #define iosapic_system_init(pcat_compat)			do { } while (0)
-#define iosapic_init(address,gsi_base)				do { } while (0)
+#define iosapic_init(address,gsi_base)				(-EINVAL)
+#ifdef CONFIG_HOTPLUG
+#define iosapic_remove(gsi_base)				(-ENODEV)
+#endif /* CONFIG_HOTPLUG */
 #define iosapic_register_intr(gsi,polarity,trigger)		(gsi)
 #define iosapic_unregister_intr(irq)				do { } while (0)
 #define iosapic_override_isa_irq(isa_irq,gsi,polarity,trigger)	do { } while (0)

include/asm-ia64/pci.h

···
 #define sg_dma_len(sg)		((sg)->dma_length)
 #define sg_dma_address(sg)	((sg)->dma_address)
 
+#ifdef CONFIG_PCI
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+					enum pci_dma_burst_strategy *strat,
+					unsigned long *strategy_parameter)
+{
+	unsigned long cacheline_size;
+	u8 byte;
+
+	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
+	if (byte == 0)
+		cacheline_size = 1024;
+	else
+		cacheline_size = (int) byte * 4;
+
+	*strat = PCI_DMA_BURST_MULTIPLE;
+	*strategy_parameter = cacheline_size;
+}
+#endif
+
 #define HAVE_PCI_MMAP
 extern int pci_mmap_page_range (struct pci_dev *dev, struct vm_area_struct *vma,
 				enum pci_mmap_state mmap_state, int write_combine);

include/asm-mips/pci.h

···
 extern void pci_dac_dma_sync_single_for_device(struct pci_dev *pdev,
 	dma64_addr_t dma_addr, size_t len, int direction);
 
+#ifdef CONFIG_PCI
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+					enum pci_dma_burst_strategy *strat,
+					unsigned long *strategy_parameter)
+{
+	*strat = PCI_DMA_BURST_INFINITY;
+	*strategy_parameter = ~0UL;
+}
+#endif
+
 extern void pcibios_resource_to_bus(struct pci_dev *dev,
 	struct pci_bus_region *region, struct resource *res);
 

include/asm-parisc/pci.h

···
 /* export the pci_ DMA API in terms of the dma_ one */
 #include <asm-generic/pci-dma-compat.h>
 
+#ifdef CONFIG_PCI
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+					enum pci_dma_burst_strategy *strat,
+					unsigned long *strategy_parameter)
+{
+	unsigned long cacheline_size;
+	u8 byte;
+
+	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
+	if (byte == 0)
+		cacheline_size = 1024;
+	else
+		cacheline_size = (int) byte * 4;
+
+	*strat = PCI_DMA_BURST_MULTIPLE;
+	*strategy_parameter = cacheline_size;
+}
+#endif
+
 extern void
 pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
 			 struct resource *res);

include/asm-ppc/pci.h

···
 #define pci_unmap_len(PTR, LEN_NAME)		(0)
 #define pci_unmap_len_set(PTR, LEN_NAME, VAL)	do { } while (0)
 
+#ifdef CONFIG_PCI
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+					enum pci_dma_burst_strategy *strat,
+					unsigned long *strategy_parameter)
+{
+	*strat = PCI_DMA_BURST_INFINITY;
+	*strategy_parameter = ~0UL;
+}
+#endif
+
 /*
  * At present there are very few 32-bit PPC machines that can have
  * memory above the 4GB point, and we don't support that.
···
 					 unsigned long offset,
 					 unsigned long size,
 					 pgprot_t prot);
+
+#define HAVE_ARCH_PCI_RESOURCE_TO_USER
+extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
+				 const struct resource *rsrc,
+				 u64 *start, u64 *end);
+
 
 #endif	/* __KERNEL__ */
 

include/asm-ppc64/pci.h

···
 	return 0;
 }
 
+#ifdef CONFIG_PCI
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+					enum pci_dma_burst_strategy *strat,
+					unsigned long *strategy_parameter)
+{
+	unsigned long cacheline_size;
+	u8 byte;
+
+	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
+	if (byte == 0)
+		cacheline_size = 1024;
+	else
+		cacheline_size = (int) byte * 4;
+
+	*strat = PCI_DMA_BURST_MULTIPLE;
+	*strategy_parameter = cacheline_size;
+}
+#endif
+
 extern int pci_domain_nr(struct pci_bus *bus);
 
 /* Decide whether to display the domain number in /proc */
···
 					 unsigned long offset,
 					 unsigned long size,
 					 pgprot_t prot);
+
+#ifdef CONFIG_PPC_MULTIPLATFORM
+#define HAVE_ARCH_PCI_RESOURCE_TO_USER
+extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
+				 const struct resource *rsrc,
+				 u64 *start, u64 *end);
+#endif /* CONFIG_PPC_MULTIPLATFORM */
 
 
 #endif	/* __KERNEL__ */

include/asm-sh/pci.h

···
 #define sg_dma_address(sg)	(virt_to_bus((sg)->dma_address))
 #define sg_dma_len(sg)		((sg)->length)
 
+#ifdef CONFIG_PCI
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+					enum pci_dma_burst_strategy *strat,
+					unsigned long *strategy_parameter)
+{
+	*strat = PCI_DMA_BURST_INFINITY;
+	*strategy_parameter = ~0UL;
+}
+#endif
+
 /* Board-specific fixup routines. */
 extern void pcibios_fixup(void);
 extern void pcibios_fixup_irqs(void);

include/asm-sh64/pci.h

···
 #define sg_dma_address(sg)	((sg)->dma_address)
 #define sg_dma_len(sg)		((sg)->length)
 
+#ifdef CONFIG_PCI
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+					enum pci_dma_burst_strategy *strat,
+					unsigned long *strategy_parameter)
+{
+	*strat = PCI_DMA_BURST_INFINITY;
+	*strategy_parameter = ~0UL;
+}
+#endif
+
 /* Board-specific fixup routines. */
 extern void pcibios_fixup(void);
 extern void pcibios_fixup_irqs(void);

include/asm-sparc/pci.h

···
 
 #define pci_dac_dma_supported(dev, mask)	(0)
 
+#ifdef CONFIG_PCI
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+					enum pci_dma_burst_strategy *strat,
+					unsigned long *strategy_parameter)
+{
+	*strat = PCI_DMA_BURST_INFINITY;
+	*strategy_parameter = ~0UL;
+}
+#endif
+
 static inline void pcibios_add_platform_entries(struct pci_dev *dev)
 {
 }

include/asm-sparc64/pci.h

···
 	return (dma_addr == PCI_DMA_ERROR_CODE);
 }
 
+#ifdef CONFIG_PCI
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+					enum pci_dma_burst_strategy *strat,
+					unsigned long *strategy_parameter)
+{
+	unsigned long cacheline_size;
+	u8 byte;
+
+	pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
+	if (byte == 0)
+		cacheline_size = 1024;
+	else
+		cacheline_size = (int) byte * 4;
+
+	*strat = PCI_DMA_BURST_BOUNDARY;
+	*strategy_parameter = cacheline_size;
+}
+#endif
+
 /* Return the index of the PCI controller for device PDEV. */
 
 extern int pci_domain_nr(struct pci_bus *bus);

include/asm-v850/pci.h

···
 pci_free_consistent (struct pci_dev *pdev, size_t size, void *cpu_addr,
 		     dma_addr_t dma_addr);
 
+#ifdef CONFIG_PCI
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+					enum pci_dma_burst_strategy *strat,
+					unsigned long *strategy_parameter)
+{
+	*strat = PCI_DMA_BURST_INFINITY;
+	*strategy_parameter = ~0UL;
+}
+#endif
+
 static inline void pcibios_add_platform_entries(struct pci_dev *dev)
 {
 }

include/asm-x86_64/pci.h

···
 	flush_write_buffers();
 }
 
+#ifdef CONFIG_PCI
+static inline void pci_dma_burst_advice(struct pci_dev *pdev,
+					enum pci_dma_burst_strategy *strat,
+					unsigned long *strategy_parameter)
+{
+	*strat = PCI_DMA_BURST_INFINITY;
+	*strategy_parameter = ~0UL;
+}
+#endif
+
 #define HAVE_PCI_MMAP
 extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
 			       enum pci_mmap_state mmap_state, int write_combine);

include/linux/acpi.h

···
 
 /* PCI MMCONFIG */
 
+/* Defined in PCI Firmware Specification 3.0 */
+struct acpi_table_mcfg_config {
+	u32				base_address;
+	u32				base_reserved;
+	u16				pci_segment_group_number;
+	u8				start_bus_number;
+	u8				end_bus_number;
+	u8				reserved[4];
+} __attribute__ ((packed));
 struct acpi_table_mcfg {
 	struct acpi_table_header	header;
 	u8				reserved[8];
-	u32				base_address;
-	u32				base_reserved;
+	struct acpi_table_mcfg_config	config[0];
 } __attribute__ ((packed));
 
 /* Table Handlers */
···
 int acpi_get_table_header_early (enum acpi_table_id id, struct acpi_table_header **header);
 int acpi_table_parse_madt (enum acpi_madt_entry_id id, acpi_madt_entry_handler handler, unsigned int max_entries);
 int acpi_table_parse_srat (enum acpi_srat_entry_id id, acpi_madt_entry_handler handler, unsigned int max_entries);
+int acpi_parse_mcfg (unsigned long phys_addr, unsigned long size);
 void acpi_table_print (struct acpi_table_header *header, unsigned long phys_addr);
 void acpi_table_print_madt_entry (acpi_table_entry_header *madt);
 void acpi_table_print_srat_entry (acpi_table_entry_header *srat);
···
 int acpi_unmap_lsapic(int cpu);
 #endif /* CONFIG_ACPI_HOTPLUG_CPU */
 
+int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base);
+int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base);
+
 extern int acpi_mp_config;
 
-extern u32 pci_mmcfg_base_addr;
+extern struct acpi_table_mcfg_config *pci_mmcfg_config;
+extern int pci_mmcfg_config_num;
 
 extern int sbf_port ;
 

include/linux/pci.h

···
 /* Generic PCI functions used internally */
 
 extern struct pci_bus *pci_find_bus(int domain, int busnr);
+void pci_bus_add_devices(struct pci_bus *bus);
 struct pci_bus *pci_scan_bus_parented(struct device *parent, int bus, struct pci_ops *ops, void *sysdata);
 static inline struct pci_bus *pci_scan_bus(int bus, struct pci_ops *ops, void *sysdata)
 {
-	return pci_scan_bus_parented(NULL, bus, ops, sysdata);
+	struct pci_bus *root_bus;
+	root_bus = pci_scan_bus_parented(NULL, bus, ops, sysdata);
+	if (root_bus)
+		pci_bus_add_devices(root_bus);
+	return root_bus;
 }
 int pci_scan_slot(struct pci_bus *bus, int devfn);
 struct pci_dev * pci_scan_single_device(struct pci_bus *bus, int devfn);
 unsigned int pci_scan_child_bus(struct pci_bus *bus);
 void pci_bus_add_device(struct pci_dev *dev);
-void pci_bus_add_devices(struct pci_bus *bus);
 void pci_name_device(struct pci_dev *dev);
 char *pci_class_name(u32 class);
 void pci_read_bridge_bases(struct pci_bus *child);
···
 #define	pci_pool_alloc(pool, flags, handle) dma_pool_alloc(pool, flags, handle)
 #define	pci_pool_free(pool, vaddr, addr) dma_pool_free(pool, vaddr, addr)
 
+enum pci_dma_burst_strategy {
+	PCI_DMA_BURST_INFINITY,	/* make bursts as large as possible,
+				   strategy_parameter is N/A */
+	PCI_DMA_BURST_BOUNDARY, /* disconnect at every strategy_parameter
+				   byte boundaries */
+	PCI_DMA_BURST_MULTIPLE, /* disconnect at some multiple of
+				   strategy_parameter byte boundaries */
+};
+
 #if defined(CONFIG_ISA) || defined(CONFIG_EISA)
 extern struct pci_dev *isa_bridge;
 #endif
···
 }
 #endif
 
+#define pci_dma_burst_advice(pdev, strat, strategy_parameter) do { } while (0)
+
 #endif /* !CONFIG_PCI */
 
 /* these helpers provide future and backwards compatibility
···
 #else
 #define pci_pretty_name(dev) ""
 #endif
+
+
+/* Some archs don't want to expose struct resource to userland as-is
+ * in sysfs and /proc
+ */
+#ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER
+static inline void pci_resource_to_user(const struct pci_dev *dev, int bar,
+                const struct resource *rsrc, u64 *start, u64 *end)
+{
+	*start = rsrc->start;
+	*end = rsrc->end;
+}
+#endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */
+
 
 /*
  *  The world is not perfect and supplies us with broken PCI devices.

include/linux/pci_ids.h

···
 
 #define PCI_BASE_CLASS_SYSTEM		0x08
 #define PCI_CLASS_SYSTEM_PIC		0x0800
+#define PCI_CLASS_SYSTEM_PIC_IOAPIC	0x080010
+#define PCI_CLASS_SYSTEM_PIC_IOXAPIC	0x080020
 #define PCI_CLASS_SYSTEM_DMA		0x0801
 #define PCI_CLASS_SYSTEM_TIMER		0x0802
 #define PCI_CLASS_SYSTEM_RTC		0x0803