Esempio n. 1
0
static void add_resources(struct pci_root_info *info,
			  struct list_head *resources)
{
	int i;
	struct resource *res, *root, *conflict;

	coalesce_windows(info, IORESOURCE_MEM);
	coalesce_windows(info, IORESOURCE_IO);

	for (i = 0; i < info->res_num; i++) {
		res = &info->res[i];

		if (res->flags & IORESOURCE_MEM)
			root = &iomem_resource;
		else if (res->flags & IORESOURCE_IO)
			root = &ioport_resource;
		else
			continue;

		conflict = insert_resource_conflict(root, res);
		if (conflict)
			dev_info(&info->bridge->dev,
				 "ignoring host bridge window %pR (conflicts with %s %pR)\n",
				 res, conflict->name, conflict);
		else
			pci_add_resource_offset(resources, res,
					info->res_offset[i]);
	}
}
Esempio n. 2
0
static void __init pci_controller_apertures(struct pci_controller *pci_ctrl,
        struct list_head *resources)
{
    struct resource *res;
    unsigned long io_offset;
    int i;

    io_offset = (unsigned long)pci_ctrl->io_space.base;
    res = &pci_ctrl->io_resource;
    if (!res->flags) {
        if (io_offset)
            printk (KERN_ERR "I/O resource not set for host"
                    " bridge %d\n", pci_ctrl->index);
        res->start = 0;
        res->end = IO_SPACE_LIMIT;
        res->flags = IORESOURCE_IO;
    }
    res->start += io_offset;
    res->end += io_offset;
    pci_add_resource_offset(resources, res, io_offset);

    for (i = 0; i < 3; i++) {
        res = &pci_ctrl->mem_resources[i];
        if (!res->flags) {
            if (i > 0)
                continue;
            printk(KERN_ERR "Memory resource not set for "
                   "host bridge %d\n", pci_ctrl->index);
            res->start = 0;
            res->end = ~0U;
            res->flags = IORESOURCE_MEM;
        }
        pci_add_resource(resources, res);
    }
}
Esempio n. 3
0
/*
 * Initialization. Try all known PCI access methods. Note that we support
 * using both PCI BIOS and direct access: in such cases, we use I/O ports
 * to access config space, but we still keep BIOS order of cards to be
 * compatible with 2.0.X. This should go away some day.
 */
static int __init pcibios_init(void)
{
	resource_size_t io_offset, mem_offset;
	LIST_HEAD(resources);
	struct pci_bus *bus;

	ioport_resource.start	= 0xA0000000;
	ioport_resource.end	= 0xDFFFFFFF;
	iomem_resource.start	= 0xA0000000;
	iomem_resource.end	= 0xDFFFFFFF;

	if (insert_resource(&iomem_resource, &pci_iomem_resource) < 0)
		panic("Unable to insert PCI IOMEM resource\n");
	if (insert_resource(&ioport_resource, &pci_ioport_resource) < 0)
		panic("Unable to insert PCI IOPORT resource\n");

	if (!pci_probe)
		return 0;

	if (pci_check_direct() < 0) {
		printk(KERN_WARNING "PCI: No PCI bus detected\n");
		return 0;
	}

	printk(KERN_INFO "PCI: Probing PCI hardware [mempage %08x]\n",
	       MEM_PAGING_REG);

	io_offset = pci_ioport_resource.start -
	    (pci_ioport_resource.start & 0x00ffffff);
	mem_offset = pci_iomem_resource.start -
	    ((pci_iomem_resource.start & 0x03ffffff) | MEM_PAGING_REG);

	pci_add_resource_offset(&resources, &pci_ioport_resource, io_offset);
	pci_add_resource_offset(&resources, &pci_iomem_resource, mem_offset);
	bus = pci_scan_root_bus(NULL, 0, &pci_direct_ampci, NULL, &resources);
	if (!bus)
		return 0;
	pcibios_resource_survey();
	pci_bus_add_devices(bus);
	return 0;
}
Esempio n. 4
0
static int __init pci_v3_setup_resources(struct pci_sys_data *sys)
{
	if (request_resource(&iomem_resource, &non_mem)) {
		printk(KERN_ERR "PCI: unable to allocate non-prefetchable "
		       "memory region\n");
		return -EBUSY;
	}
	if (request_resource(&iomem_resource, &pre_mem)) {
		release_resource(&non_mem);
		printk(KERN_ERR "PCI: unable to allocate prefetchable "
		       "memory region\n");
		return -EBUSY;
	}

	/*
	 * the mem resource for this bus
	 * the prefetch mem resource for this bus
	 */
	pci_add_resource_offset(&sys->resources, &non_mem, sys->mem_offset);
	pci_add_resource_offset(&sys->resources, &pre_mem, sys->mem_offset);

	return 1;
}
Esempio n. 5
0
static int __init kirkwood_pcie_setup(int nr, struct pci_sys_data *sys)
{
	struct pcie_port *pp;
	int index;

	if (nr >= num_pcie_ports)
		return 0;

	index = pcie_port_map[nr];
	printk(KERN_INFO "PCI: bus%d uses PCIe port %d\n", sys->busnr, index);

	pp = kzalloc(sizeof(*pp), GFP_KERNEL);
	if (!pp)
		panic("PCIe: failed to allocate pcie_port data");
	sys->private_data = pp;
	pp->root_bus_nr = sys->busnr;
	spin_lock_init(&pp->conf_lock);

	switch (index) {
	case 0:
		kirkwood_enable_pcie_clk("0");
		pcie0_ioresources_init(pp);
		pci_ioremap_io(SZ_64K * sys->busnr, KIRKWOOD_PCIE_IO_PHYS_BASE);
		break;
	case 1:
		kirkwood_enable_pcie_clk("1");
		pcie1_ioresources_init(pp);
		pci_ioremap_io(SZ_64K * sys->busnr, KIRKWOOD_PCIE1_IO_PHYS_BASE);
		break;
	default:
		panic("PCIe setup: invalid controller %d", index);
	}

	if (request_resource(&iomem_resource, &pp->res))
		panic("Request PCIe%d Memory resource failed\n", index);

	pci_add_resource_offset(&sys->resources, &pp->res, sys->mem_offset);

	/*
	 * Generic PCIe unit setup.
	 */
	orion_pcie_set_local_bus_nr(pp->base, sys->busnr);

	orion_pcie_setup(pp->base);

	return 1;
}
Esempio n. 6
0
static int __init dove_pcie_setup(int nr, struct pci_sys_data *sys)
{
	struct pcie_port *pp;

	if (nr >= num_pcie_ports)
		return 0;

	pp = &pcie_port[nr];
	sys->private_data = pp;
	pp->root_bus_nr = sys->busnr;

	/*
	 * Generic PCIe unit setup.
	 */
	orion_pcie_set_local_bus_nr(pp->base, sys->busnr);

	orion_pcie_setup(pp->base);

	if (pp->index == 0)
		pci_ioremap_io(sys->busnr * SZ_64K, DOVE_PCIE0_IO_PHYS_BASE);
	else
		pci_ioremap_io(sys->busnr * SZ_64K, DOVE_PCIE1_IO_PHYS_BASE);

	/*
	 * IORESOURCE_MEM
	 */
	snprintf(pp->mem_space_name, sizeof(pp->mem_space_name),
		 "PCIe %d MEM", pp->index);
	pp->mem_space_name[sizeof(pp->mem_space_name) - 1] = 0;
	pp->res.name = pp->mem_space_name;
	if (pp->index == 0) {
		pp->res.start = DOVE_PCIE0_MEM_PHYS_BASE;
		pp->res.end = pp->res.start + DOVE_PCIE0_MEM_SIZE - 1;
	} else {
		pp->res.start = DOVE_PCIE1_MEM_PHYS_BASE;
		pp->res.end = pp->res.start + DOVE_PCIE1_MEM_SIZE - 1;
	}
	pp->res.flags = IORESOURCE_MEM;
	if (request_resource(&iomem_resource, &pp->res))
		panic("Request PCIe Memory resource failed\n");
	pci_add_resource_offset(&sys->resources, &pp->res, sys->mem_offset);

	return 1;
}
Esempio n. 7
0
static int __init mv78xx0_pcie_setup(int nr, struct pci_sys_data *sys)
{
	struct pcie_port *pp;

	if (nr >= num_pcie_ports)
		return 0;

	pp = &pcie_port[nr];
	sys->private_data = pp;
	pp->root_bus_nr = sys->busnr;

	/*
	 * Generic PCIe unit setup.
	 */
	orion_pcie_set_local_bus_nr(pp->base, sys->busnr);
	orion_pcie_setup(pp->base);

	pci_ioremap_io(nr * SZ_64K, MV78XX0_PCIE_IO_PHYS_BASE(nr));

	pci_add_resource_offset(&sys->resources, &pp->res, sys->mem_offset);

	return 1;
}
Esempio n. 8
0
void pci_add_resource(struct list_head *resources, struct resource *res)
{
	pci_add_resource_offset(resources, res, 0);
}