> -----Original Message----- > From: Wangzhou (B) > Sent: Tuesday, June 16, 2015 12:30 PM > To: Gabriele Paoloni > Cc: Lorenzo Pieralisi; James Morse; Bjorn Helgaas; Jingoo Han; Pratyush > Anand; Arnd Bergmann; fabrice.gasnier@xxxxxx; Liviu Dudau; linux- > pci@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; > devicetree@xxxxxxxxxxxxxxx; Yuanzhichang; Zhudacai; zhangjukuo; > qiuzhenfa; Liguozhu (Kenneth) > Subject: Re: [PATCH v2 2/4] PCI: designware: Add ARM64 support > > On 2015/6/11 22:32, Gabriele Paoloni wrote: > > Hi Zhou Wang > > > > I apologize, I made a mistake as I didn't rebase the patch on the > latest Kernel (where I was convinced I did), my bad. > > > > The patch below is based on v4.1-rc7 > > > > It passes checkpatch and compiles OK > > > > Cheers > > > > Gab > > > > Hi Gab, > > I will try to merge your patch into next version, please help to > review :) > Sure I will :) Thanks Gab > Many thanks for your patch. > Zhou > > > ------------------------------------------- > > ------------------------------------------- > > This patch is a rework of > > "[PATCH v2 2/4] PCI: designware: Add ARM64 support" from Zhou Wang. > > > > The intention is to complete the unification between ARM and > > ARM64 now that the dependency on arch/arm/kernel/bios32.c is gone. > > > > I have also included the rework asked by James Morse: > > io_base declared as resource_size_t > > > > It compiles fine on ARCH arm and arm64 on Linux 4.1-rc7. > > > > It needs to be tested. > > > > Signed-off-by: Gabriele Paoloni <gabriele.paoloni@xxxxxxxxxx> > > > > --- > > drivers/pci/host/pci-dra7xx.c | 1 + > > drivers/pci/host/pci-exynos.c | 2 +- > > drivers/pci/host/pci-imx6.c | 2 +- > > drivers/pci/host/pci-keystone.c | 2 +- > > drivers/pci/host/pci-layerscape.c | 2 +- > > drivers/pci/host/pcie-designware.c | 242 +++++++++++++++------------ > ---------- > > drivers/pci/host/pcie-designware.h | 10 +- > > drivers/pci/host/pcie-spear13xx.c | 2 +- > > 8 files changed, 109 insertions(+), 154 deletions(-) > > > > diff --git a/drivers/pci/host/pci-dra7xx.c b/drivers/pci/host/pci- > dra7xx.c > > index 2d57e19..5c8b6ab 100644 > > --- a/drivers/pci/host/pci-dra7xx.c > > +++ b/drivers/pci/host/pci-dra7xx.c > > @@ -280,6 +280,7 @@ static int __init dra7xx_add_pcie_port(struct > dra7xx_pcie *dra7xx, > > > > pp = &dra7xx->pp; > > pp->dev = dev; > > + pp->root_bus_nr = 0; > > pp->ops = &dra7xx_pcie_host_ops; > > > > pp->irq = platform_get_irq(pdev, 1); > > diff --git a/drivers/pci/host/pci-exynos.c b/drivers/pci/host/pci- > exynos.c > > index c139237..4b6db6c 100644 > > --- a/drivers/pci/host/pci-exynos.c > > +++ b/drivers/pci/host/pci-exynos.c > > @@ -534,7 +534,7 @@ static int __init exynos_add_pcie_port(struct > pcie_port *pp, > > } > > } > > > > - pp->root_bus_nr = -1; > > + pp->root_bus_nr = 0; > > pp->ops = &exynos_pcie_host_ops; > > > > ret = dw_pcie_host_init(pp); > > diff --git a/drivers/pci/host/pci-imx6.c b/drivers/pci/host/pci- > imx6.c > > index fdb9536..c4a80c5 100644 > > --- a/drivers/pci/host/pci-imx6.c > > +++ b/drivers/pci/host/pci-imx6.c > > @@ -541,7 +541,7 @@ static int __init imx6_add_pcie_port(struct > pcie_port *pp, > > } > > } > > > > - pp->root_bus_nr = -1; > > + pp->root_bus_nr = 0; > > pp->ops = &imx6_pcie_host_ops; > > > > ret = dw_pcie_host_init(pp); > > diff --git a/drivers/pci/host/pci-keystone.c b/drivers/pci/host/pci- > keystone.c > > index 75333b0..df91f5e 100644 > > --- a/drivers/pci/host/pci-keystone.c > > +++ b/drivers/pci/host/pci-keystone.c > > @@ -312,7 +312,7 @@ static int __init ks_add_pcie_port(struct > keystone_pcie *ks_pcie, > > return ret; > > } > > > > - pp->root_bus_nr = -1; > > + pp->root_bus_nr = 0; > > pp->ops = &keystone_pcie_host_ops; > > ret = ks_dw_pcie_host_init(ks_pcie, ks_pcie->msi_intc_np); > > if (ret) { > > diff --git a/drivers/pci/host/pci-layerscape.c > b/drivers/pci/host/pci-layerscape.c > > index 4a6e62f..5c7a9c4 100644 > > --- a/drivers/pci/host/pci-layerscape.c > > +++ b/drivers/pci/host/pci-layerscape.c > > @@ -101,7 +101,7 @@ static int ls_add_pcie_port(struct ls_pcie *pcie) > > pp = &pcie->pp; > > pp->dev = pcie->dev; > > pp->dbi_base = pcie->dbi; > > - pp->root_bus_nr = -1; > > + pp->root_bus_nr = 0; > > pp->ops = &ls_pcie_host_ops; > > > > ret = dw_pcie_host_init(pp); > > diff --git a/drivers/pci/host/pcie-designware.c > b/drivers/pci/host/pcie-designware.c > > index 2e9f84f..844febee 100644 > > --- a/drivers/pci/host/pcie-designware.c > > +++ b/drivers/pci/host/pcie-designware.c > > @@ -11,6 +11,7 @@ > > * published by the Free Software Foundation. > > */ > > > > +#include <linux/hardirq.h> > > #include <linux/irq.h> > > #include <linux/irqdomain.h> > > #include <linux/kernel.h> > > @@ -67,16 +68,7 @@ > > #define PCIE_ATU_FUNC(x) (((x) & 0x7) << 16) > > #define PCIE_ATU_UPPER_TARGET 0x91C > > > > -static struct hw_pci dw_pci; > > - > > -static unsigned long global_io_offset; > > - > > -static inline struct pcie_port *sys_to_pcie(struct pci_sys_data *sys) > > -{ > > - BUG_ON(!sys->private_data); > > - > > - return sys->private_data; > > -} > > +static struct pci_ops dw_pcie_ops; > > > > int dw_pcie_cfg_read(void __iomem *addr, int where, int size, u32 > *val) > > { > > @@ -238,7 +230,7 @@ static void dw_pcie_msi_set_irq(struct pcie_port > *pp, int irq) > > static int assign_irq(int no_irqs, struct msi_desc *desc, int *pos) > > { > > int irq, pos0, i; > > - struct pcie_port *pp = sys_to_pcie(desc->dev->bus->sysdata); > > + struct pcie_port *pp = desc->dev->bus->sysdata; > > > > pos0 = bitmap_find_free_region(pp->msi_irq_in_use, MAX_MSI_IRQS, > > order_base_2(no_irqs)); > > @@ -281,7 +273,7 @@ static int dw_msi_setup_irq(struct msi_controller > *chip, struct pci_dev *pdev, > > { > > int irq, pos; > > struct msi_msg msg; > > - struct pcie_port *pp = sys_to_pcie(pdev->bus->sysdata); > > + struct pcie_port *pp = pdev->bus->sysdata; > > > > if (desc->msi_attrib.is_msix) > > return -EINVAL; > > @@ -310,7 +302,7 @@ static void dw_msi_teardown_irq(struct > msi_controller *chip, unsigned int irq) > > { > > struct irq_data *data = irq_get_irq_data(irq); > > struct msi_desc *msi = irq_data_get_msi(data); > > - struct pcie_port *pp = sys_to_pcie(msi->dev->bus->sysdata); > > + struct pcie_port *pp = msi->dev->bus->sysdata; > > > > clear_irq_range(pp, irq, 1, data->hwirq); > > } > > @@ -342,16 +334,24 @@ static const struct irq_domain_ops > msi_domain_ops = { > > .map = dw_pcie_msi_map, > > }; > > > > -int dw_pcie_host_init(struct pcie_port *pp) > > +int __init dw_pcie_host_init(struct pcie_port *pp) > > { > > struct device_node *np = pp->dev->of_node; > > struct platform_device *pdev = to_platform_device(pp->dev); > > - struct of_pci_range range; > > - struct of_pci_range_parser parser; > > + struct pci_bus *bus; > > struct resource *cfg_res; > > + LIST_HEAD(res); > > u32 val, na, ns; > > const __be32 *addrp; > > int i, index, ret; > > + int rlen; > > + struct resource_entry *win; > > + const __be32 *parser_range_end = of_get_property(np, "ranges", > &rlen); > > + > > + if (parser_range_end == NULL) > > + return -ENOENT; > > + parser_range_end += rlen/sizeof(__be32); > > + > > > > /* Find the address cell size and the number of cells in order to > get > > * the untranslated address. > > @@ -375,78 +375,67 @@ int dw_pcie_host_init(struct pcie_port *pp) > > dev_err(pp->dev, "missing *config* reg space\n"); > > } > > > > - if (of_pci_range_parser_init(&parser, np)) { > > - dev_err(pp->dev, "missing ranges property\n"); > > - return -EINVAL; > > - } > > + ret = of_pci_get_host_bridge_resources(np, 0, 0xff, &res, &pp- > >io_base); > > + if (ret) > > + return ret; > > > > /* Get the I/O and memory ranges from DT */ > > - for_each_of_pci_range(&parser, &range) { > > - unsigned long restype = range.flags & IORESOURCE_TYPE_BITS; > > - > > - if (restype == IORESOURCE_IO) { > > - of_pci_range_to_resource(&range, np, &pp->io); > > - pp->io.name = "I/O"; > > - pp->io.start = max_t(resource_size_t, > > - PCIBIOS_MIN_IO, > > - range.pci_addr + global_io_offset); > > - pp->io.end = min_t(resource_size_t, > > - IO_SPACE_LIMIT, > > - range.pci_addr + range.size > > - + global_io_offset - 1); > > - pp->io_size = resource_size(&pp->io); > > - pp->io_bus_addr = range.pci_addr; > > - pp->io_base = range.cpu_addr; > > - > > - /* Find the untranslated IO space address */ > > - pp->io_mod_base = of_read_number(parser.range - > > - parser.np + na, ns); > > - } > > - if (restype == IORESOURCE_MEM) { > > - of_pci_range_to_resource(&range, np, &pp->mem); > > - pp->mem.name = "MEM"; > > - pp->mem_size = resource_size(&pp->mem); > > - pp->mem_bus_addr = range.pci_addr; > > - > > - /* Find the untranslated MEM space address */ > > - pp->mem_mod_base = of_read_number(parser.range - > > - parser.np + na, ns); > > - } > > - if (restype == 0) { > > - of_pci_range_to_resource(&range, np, &pp->cfg); > > - pp->cfg0_size = resource_size(&pp->cfg)/2; > > - pp->cfg1_size = resource_size(&pp->cfg)/2; > > - pp->cfg0_base = pp->cfg.start; > > - pp->cfg1_base = pp->cfg.start + pp->cfg0_size; > > + resource_list_for_each_entry(win, &res) { > > + switch (resource_type(win->res)) { > > + case IORESOURCE_IO: > > + pp->io = win->res; > > + pp->io->name = "I/O"; > > + pp->io_size = resource_size(pp->io); > > + pp->io_bus_addr = pp->io->start - win->offset; > > + /* magic 5 below comes from magic na and ns in > > + * of_pci_range_parser_init() */ > > + pp->io_mod_base = of_read_number(parser_range_end - > > + of_n_addr_cells(np) - 5 + na, ns); > > + ret = pci_remap_iospace(pp->io, pp->io_base); > > + if (ret) { > > + dev_warn(pp->dev, "error %d: failed to map > resource %pR\n", > > + ret, pp->io); > > + continue; > > + } > > + break; > > + case IORESOURCE_MEM: > > + pp->mem = win->res; > > + pp->mem->name = "MEM"; > > + pp->mem_size = resource_size(pp->mem); > > + pp->mem_bus_addr = pp->mem->start - win->offset; > > + pp->mem_mod_base = of_read_number(parser_range_end - > > + of_n_addr_cells(np) - 5 + na, ns); > > + break; > > + case 0: > > + pp->cfg = win->res; > > + pp->cfg0_size = resource_size(pp->cfg)/2; > > + pp->cfg1_size = resource_size(pp->cfg)/2; > > + pp->cfg0_base = pp->cfg->start; > > + pp->cfg1_base = pp->cfg->start + pp->cfg0_size; > > > > /* Find the untranslated configuration space address > */ > > - pp->cfg0_mod_base = of_read_number(parser.range - > > - parser.np + na, ns); > > - pp->cfg1_mod_base = pp->cfg0_mod_base + > > - pp->cfg0_size; > > + pp->cfg0_mod_base = of_read_number(parser_range_end - > > + of_n_addr_cells(np) - 5 + na, ns); > > + pp->cfg1_mod_base = pp->cfg0_mod_base + pp->cfg0_size; > > + break; > > + case IORESOURCE_BUS: > > + pp->busn = win->res; > > + break; > > + default: > > + continue; > > } > > } > > > > - ret = of_pci_parse_bus_range(np, &pp->busn); > > - if (ret < 0) { > > - pp->busn.name = np->name; > > - pp->busn.start = 0; > > - pp->busn.end = 0xff; > > - pp->busn.flags = IORESOURCE_BUS; > > - dev_dbg(pp->dev, "failed to parse bus-range property: %d, > using default %pR\n", > > - ret, &pp->busn); > > - } > > - > > if (!pp->dbi_base) { > > - pp->dbi_base = devm_ioremap(pp->dev, pp->cfg.start, > > - resource_size(&pp->cfg)); > > + pp->dbi_base = devm_ioremap(pp->dev, pp->cfg->start, > > + resource_size(pp->cfg)); > > if (!pp->dbi_base) { > > dev_err(pp->dev, "error with ioremap\n"); > > return -ENOMEM; > > } > > } > > > > - pp->mem_base = pp->mem.start; > > + pp->mem_base = pp->mem->start; > > > > if (!pp->va_cfg0_base) { > > pp->va_cfg0_base = devm_ioremap(pp->dev, pp->cfg0_base, > > @@ -493,24 +482,47 @@ int dw_pcie_host_init(struct pcie_port *pp) > > if (pp->ops->host_init) > > pp->ops->host_init(pp); > > > > - dw_pcie_wr_own_conf(pp, PCI_BASE_ADDRESS_0, 4, 0); > > + if (dw_pcie_wr_own_conf(pp, PCI_BASE_ADDRESS_0, 4, 0) > > + != PCIBIOS_SUCCESSFUL) > > + return -EINVAL; > > > > /* program correct class for RC */ > > - dw_pcie_wr_own_conf(pp, PCI_CLASS_DEVICE, 2, > PCI_CLASS_BRIDGE_PCI); > > + if (dw_pcie_wr_own_conf(pp, PCI_CLASS_DEVICE, 2, > PCI_CLASS_BRIDGE_PCI) > > + != PCIBIOS_SUCCESSFUL) > > + return -EINVAL; > > + > > + if (dw_pcie_rd_own_conf(pp, PCIE_LINK_WIDTH_SPEED_CONTROL, 4, > &val) > > + != PCIBIOS_SUCCESSFUL) > > + return -EINVAL; > > > > - dw_pcie_rd_own_conf(pp, PCIE_LINK_WIDTH_SPEED_CONTROL, 4, &val); > > val |= PORT_LOGIC_SPEED_CHANGE; > > - dw_pcie_wr_own_conf(pp, PCIE_LINK_WIDTH_SPEED_CONTROL, 4, val); > > > > -#ifdef CONFIG_PCI_MSI > > - dw_pcie_msi_chip.dev = pp->dev; > > - dw_pci.msi_ctrl = &dw_pcie_msi_chip; > > + if (dw_pcie_wr_own_conf(pp, PCIE_LINK_WIDTH_SPEED_CONTROL, 4, val) > > + != PCIBIOS_SUCCESSFUL) > > + return -EINVAL; > > + > > + bus = pci_create_root_bus(pp->dev, pp->root_bus_nr, &dw_pcie_ops, > > + pp, &res); > > + if (!bus) > > + return -ENOMEM; > > + > > +#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN > > + bus->msi = container_of(&pp->irq_domain, struct msi_controller, > domain); > > +#else > > + bus->msi = &dw_pcie_msi_chip; > > #endif > > > > - dw_pci.nr_controllers = 1; > > - dw_pci.private_data = (void **)&pp; > > + pci_scan_child_bus(bus); > > + if (pp->ops->scan_bus) > > + pp->ops->scan_bus(pp); > > > > - pci_common_init_dev(pp->dev, &dw_pci); > > +#ifdef CONFIG_ARM > > + /* support old dtbs that incorrectly describe IRQs */ > > + pci_fixup_irqs(pci_common_swizzle, of_irq_parse_and_map_pci); > > +#endif > > + > > + pci_assign_unassigned_bus_resources(bus); > > + pci_bus_add_devices(bus); > > > > return 0; > > } > > @@ -653,7 +665,7 @@ static int dw_pcie_valid_config(struct pcie_port > *pp, > > static int dw_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where, > > int size, u32 *val) > > { > > - struct pcie_port *pp = sys_to_pcie(bus->sysdata); > > + struct pcie_port *pp = bus->sysdata; > > int ret; > > > > if (dw_pcie_valid_config(pp, bus, PCI_SLOT(devfn)) == 0) { > > @@ -677,7 +689,7 @@ static int dw_pcie_rd_conf(struct pci_bus *bus, > u32 devfn, int where, > > static int dw_pcie_wr_conf(struct pci_bus *bus, u32 devfn, > > int where, int size, u32 val) > > { > > - struct pcie_port *pp = sys_to_pcie(bus->sysdata); > > + struct pcie_port *pp = bus->sysdata; > > int ret; > > > > if (dw_pcie_valid_config(pp, bus, PCI_SLOT(devfn)) == 0) > > @@ -701,64 +713,6 @@ static struct pci_ops dw_pcie_ops = { > > .write = dw_pcie_wr_conf, > > }; > > > > -static int dw_pcie_setup(int nr, struct pci_sys_data *sys) > > -{ > > - struct pcie_port *pp; > > - > > - pp = sys_to_pcie(sys); > > - > > - if (global_io_offset < SZ_1M && pp->io_size > 0) { > > - sys->io_offset = global_io_offset - pp->io_bus_addr; > > - pci_ioremap_io(global_io_offset, pp->io_base); > > - global_io_offset += SZ_64K; > > - pci_add_resource_offset(&sys->resources, &pp->io, > > - sys->io_offset); > > - } > > - > > - sys->mem_offset = pp->mem.start - pp->mem_bus_addr; > > - pci_add_resource_offset(&sys->resources, &pp->mem, sys- > >mem_offset); > > - pci_add_resource(&sys->resources, &pp->busn); > > - > > - return 1; > > -} > > - > > -static struct pci_bus *dw_pcie_scan_bus(int nr, struct pci_sys_data > *sys) > > -{ > > - struct pci_bus *bus; > > - struct pcie_port *pp = sys_to_pcie(sys); > > - > > - pp->root_bus_nr = sys->busnr; > > - bus = pci_create_root_bus(pp->dev, sys->busnr, > > - &dw_pcie_ops, sys, &sys->resources); > > - if (!bus) > > - return NULL; > > - > > - pci_scan_child_bus(bus); > > - > > - if (bus && pp->ops->scan_bus) > > - pp->ops->scan_bus(pp); > > - > > - return bus; > > -} > > - > > -static int dw_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 > pin) > > -{ > > - struct pcie_port *pp = sys_to_pcie(dev->bus->sysdata); > > - int irq; > > - > > - irq = of_irq_parse_and_map_pci(dev, slot, pin); > > - if (!irq) > > - irq = pp->irq; > > - > > - return irq; > > -} > > - > > -static struct hw_pci dw_pci = { > > - .setup = dw_pcie_setup, > > - .scan = dw_pcie_scan_bus, > > - .map_irq = dw_pcie_map_irq, > > -}; > > - > > void dw_pcie_setup_rc(struct pcie_port *pp) > > { > > u32 val; > > diff --git a/drivers/pci/host/pcie-designware.h > b/drivers/pci/host/pcie-designware.h > > index d0bbd27..ab78710 100644 > > --- a/drivers/pci/host/pcie-designware.h > > +++ b/drivers/pci/host/pcie-designware.h > > @@ -34,7 +34,7 @@ struct pcie_port { > > u64 cfg1_mod_base; > > void __iomem *va_cfg1_base; > > u32 cfg1_size; > > - u64 io_base; > > + resource_size_t io_base; > > u64 io_mod_base; > > phys_addr_t io_bus_addr; > > u32 io_size; > > @@ -42,10 +42,10 @@ struct pcie_port { > > u64 mem_mod_base; > > phys_addr_t mem_bus_addr; > > u32 mem_size; > > - struct resource cfg; > > - struct resource io; > > - struct resource mem; > > - struct resource busn; > > + struct resource *cfg; > > + struct resource *io; > > + struct resource *mem; > > + struct resource *busn; > > int irq; > > u32 lanes; > > struct pcie_host_ops *ops; > > diff --git a/drivers/pci/host/pcie-spear13xx.c > b/drivers/pci/host/pcie-spear13xx.c > > index 020d788..e78ddf8 100644 > > --- a/drivers/pci/host/pcie-spear13xx.c > > +++ b/drivers/pci/host/pcie-spear13xx.c > > @@ -287,7 +287,7 @@ static int spear13xx_add_pcie_port(struct > pcie_port *pp, > > return ret; > > } > > > > - pp->root_bus_nr = -1; > > + pp->root_bus_nr = 0; > > pp->ops = &spear13xx_pcie_host_ops; > > > > ret = dw_pcie_host_init(pp); > > > > -------------------------------------------------- > > -------------------------------------------------- > > > >> -----Original Message----- > >> From: Wangzhou (B) > >> Sent: Thursday, June 11, 2015 6:44 AM > >> To: Gabriele Paoloni > >> Cc: Lorenzo Pieralisi; James Morse; Bjorn Helgaas; Jingoo Han; > Pratyush > >> Anand; Arnd Bergmann; fabrice.gasnier@xxxxxx; Liviu Dudau; linux- > >> pci@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; > >> devicetree@xxxxxxxxxxxxxxx; Yuanzhichang; Zhudacai; zhangjukuo; > >> qiuzhenfa; Liguozhu (Kenneth) > >> Subject: Re: [PATCH v2 2/4] PCI: designware: Add ARM64 support > >> > >> On 2015/6/10 21:35, Gabriele Paoloni wrote: > >>> Hi Zhou Wang and all > >>> > >>> I have worked on a patch that unify ARM and ARM64. As you can see I > >> have removed the parser and now I use > >> "of_pci_get_host_bridge_resources" in order to retrieve the > resources > >> associated to each pci host bridge window. > >>> The resources now are not copied to the designware pcie_port pp, > >> instead they are passed by pointer. > >>> > >>> This patch is intended to replace entirely "[PATCH v2 2/4]"; so I > >> have also included all the changes about the other drivers > >>> > >>> Please find the patch inline below. > >>> > >>> Let me know if you think it is ok. > >>> > >>> Regards > >>> > >>> Gab > >>> > >>> ------------------------------------ > >>> ------------------------------------ > >>> > >>> This patch is a rework of > >>> "[PATCH v2 2/4] PCI: designware: Add ARM64 support" from Zhou Wang. > >>> > >>> The intention is to complete the unification between ARM and > >>> ARM64 now that the dependency on arch/arm/kernel/bios32.c is gone. > >>> > >>> I have also included the rework asked by James Morse: > >>> io_base declared as resource_size_t > >>> > >>> It compiles fine on ARCH arm and arm64. > >> > >> Hi Gabriele, > >> > >> I manually apply this patch on my series, as there are some format > >> errors > >> about this patch. And I think this patch is a experimental one, it > >> could not > >> be compiled successfully. > >> > >>> > >>> It needs to be tested. > >>> > >>> Signed-off-by: Gabriele Paoloni <gabriele.paoloni@xxxxxxxxxx> > >>> > >>> [...] > >>> > >>> -int dw_pcie_host_init(struct pcie_port *pp) > >>> +int __init dw_pcie_host_init(struct pcie_port *pp) > >>> { > >>> struct device_node *np = pp->dev->of_node; > >>> struct platform_device *pdev = to_platform_device(pp->dev); > >>> - struct of_pci_range range; > >>> - struct of_pci_range_parser parser; > >>> + struct pci_bus *bus; > >>> struct resource *cfg_res; > >>> + LIST_HEAD(res); > >>> u32 val, na, ns; > >>> const __be32 *addrp; > >>> int i, index, ret; > >>> + int rlen; > >>> + struct pci_host_bridge_window *win; > >> > >> This struct is not in latest kernel, I think you should use struct > >> resource_entry. > >> > >> Thanks, > >> Zhou > >> > >>> + const __be32 *parser_range_end = of_get_property(np, "ranges", > >> &rlen); > >>> + > >>> + if (parser_range_end == NULL) > >>> + return -ENOENT; > >>> + parser_range_end += rlen/sizeof(__be32); > >>> + > >>> > >>> /* Find the address cell size and the number of cells in order to > >> get > >>> * the untranslated address. > >>> @@ -375,78 +375,67 @@ int dw_pcie_host_init(struct pcie_port *pp) > >>> dev_err(pp->dev, "missing *config* reg space\n"); > >>> } > >>> > >>> - if (of_pci_range_parser_init(&parser, np)) { > >>> - dev_err(pp->dev, "missing ranges property\n"); > >>> - return -EINVAL; > >>> - } > >>> + ret = of_pci_get_host_bridge_resources(np, 0, 0xff, &res, &pp- > >>> io_base); > >>> + if (ret) > >>> + return ret; > >>> > >>> /* Get the I/O and memory ranges from DT */ > >>> - for_each_of_pci_range(&parser, &range) { > >>> - unsigned long restype = range.flags & IORESOURCE_TYPE_BITS; > >>> - > >>> - if (restype == IORESOURCE_IO) { > >>> - of_pci_range_to_resource(&range, np, &pp->io); > >>> - pp->io.name = "I/O"; > >>> - pp->io.start = max_t(resource_size_t, > >>> - PCIBIOS_MIN_IO, > >>> - range.pci_addr + global_io_offset); > >>> - pp->io.end = min_t(resource_size_t, > >>> - IO_SPACE_LIMIT, > >>> - range.pci_addr + range.size > >>> - + global_io_offset - 1); > >>> - pp->io_size = resource_size(&pp->io); > >>> - pp->io_bus_addr = range.pci_addr; > >>> - pp->io_base = range.cpu_addr; > >>> - > >>> - /* Find the untranslated IO space address */ > >>> - pp->io_mod_base = of_read_number(parser.range - > >>> - parser.np + na, ns); > >>> - } > >>> - if (restype == IORESOURCE_MEM) { > >>> - of_pci_range_to_resource(&range, np, &pp->mem); > >>> - pp->mem.name = "MEM"; > >>> - pp->mem_size = resource_size(&pp->mem); > >>> - pp->mem_bus_addr = range.pci_addr; > >>> - > >>> - /* Find the untranslated MEM space address */ > >>> - pp->mem_mod_base = of_read_number(parser.range - > >>> - parser.np + na, ns); > >>> - } > >>> - if (restype == 0) { > >>> - of_pci_range_to_resource(&range, np, &pp->cfg); > >>> - pp->cfg0_size = resource_size(&pp->cfg)/2; > >>> - pp->cfg1_size = resource_size(&pp->cfg)/2; > >>> - pp->cfg0_base = pp->cfg.start; > >>> - pp->cfg1_base = pp->cfg.start + pp->cfg0_size; > >>> + list_for_each_entry(win, &res, list) { > >>> + switch (resource_type(win->res)) { > >>> + case IORESOURCE_IO: > >>> + pp->io = win->res; > >>> + pp->io->name = "I/O"; > >>> + pp->io_size = resource_size(pp->io); > >>> + pp->io_bus_addr = pp->io->start - win->offset; > >>> + /* magic 5 below comes from magic na and ns in > >>> + * of_pci_range_parser_init() */ > >>> + pp->io_mod_base = of_read_number(parser_range_end - > >>> + of_n_addr_cells(np) - 5 + na, ns); > >>> + ret = pci_remap_iospace(pp->io, pp->io_base); > >>> + if (ret) { > >>> + dev_warn(pp->dev, "error %d: failed to map > >> resource %pR\n", > >>> + ret, pp->io); > >>> + continue; > >>> + } > >>> + break; > >>> + case IORESOURCE_MEM: > >>> + pp->mem = win->res; > >>> + pp->mem->name = "MEM"; > >>> + pp->mem_size = resource_size(pp->mem); > >>> + pp->mem_bus_addr = pp->mem->start - win->offset; > >>> + pp->mem_mod_base = of_read_number(parser_range_end - > >>> + of_n_addr_cells(np) - 5 + na, ns); > >>> + break; > >>> + case 0: > >>> + pp->cfg = win->res; > >>> + pp->cfg0_size = resource_size(pp->cfg)/2; > >>> + pp->cfg1_size = resource_size(pp->cfg)/2; > >>> + pp->cfg0_base = pp->cfg->start; > >>> + pp->cfg1_base = pp->cfg->start + pp->cfg0_size; > >>> > >>> /* Find the untranslated configuration space address > >> */ > >>> - pp->cfg0_mod_base = of_read_number(parser.range - > >>> - parser.np + na, ns); > >>> - pp->cfg1_mod_base = pp->cfg0_mod_base + > >>> - pp->cfg0_size; > >>> + pp->cfg0_mod_base = of_read_number(parser_range_end - > >>> + of_n_addr_cells(np) - 5 + na, ns); > >>> + pp->cfg1_mod_base = pp->cfg0_mod_base + pp->cfg0_size; > >>> + break; > >>> + case IORESOURCE_BUS: > >>> + pp->busn = win->res; > >>> + break; > >>> + default: > >>> + continue; > >>> } > >>> } > >>> > >>> - ret = of_pci_parse_bus_range(np, &pp->busn); > >>> - if (ret < 0) { > >>> - pp->busn.name = np->name; > >>> - pp->busn.start = 0; > >>> - pp->busn.end = 0xff; > >>> - pp->busn.flags = IORESOURCE_BUS; > >>> - dev_dbg(pp->dev, "failed to parse bus-range property: %d, > >> using default %pR\n", > >>> - ret, &pp->busn); > >>> - } > >>> - > >>> if (!pp->dbi_base) { > >>> - pp->dbi_base = devm_ioremap(pp->dev, pp->cfg.start, > >>> - resource_size(&pp->cfg)); > >>> + pp->dbi_base = devm_ioremap(pp->dev, pp->cfg->start, > >>> + resource_size(pp->cfg)); > >>> if (!pp->dbi_base) { > >>> dev_err(pp->dev, "error with ioremap\n"); > >>> return -ENOMEM; > >>> } > >>> } > >>> > >>> - pp->mem_base = pp->mem.start; > >>> + pp->mem_base = pp->mem->start; > >>> > >>> if (!pp->va_cfg0_base) { > >>> pp->va_cfg0_base = devm_ioremap(pp->dev, pp->cfg0_base, @@ > >> -493,24 +482,47 @@ int dw_pcie_host_init(struct pcie_port *pp) > >>> if (pp->ops->host_init) > >>> pp->ops->host_init(pp); > >>> > >>> - dw_pcie_wr_own_conf(pp, PCI_BASE_ADDRESS_0, 4, 0); > >>> + if (dw_pcie_wr_own_conf(pp, PCI_BASE_ADDRESS_0, 4, 0) > >>> + != PCIBIOS_SUCCESSFUL) > >>> + return -EINVAL; > >>> > >>> /* program correct class for RC */ > >>> - dw_pcie_wr_own_conf(pp, PCI_CLASS_DEVICE, 2, > >> PCI_CLASS_BRIDGE_PCI); > >>> + if (dw_pcie_wr_own_conf(pp, PCI_CLASS_DEVICE, 2, > >> PCI_CLASS_BRIDGE_PCI) > >>> + != PCIBIOS_SUCCESSFUL) > >>> + return -EINVAL; > >>> + > >>> + if (dw_pcie_rd_own_conf(pp, PCIE_LINK_WIDTH_SPEED_CONTROL, 4, > >> &val) > >>> + != PCIBIOS_SUCCESSFUL) > >>> + return -EINVAL; > >>> > >>> - dw_pcie_rd_own_conf(pp, PCIE_LINK_WIDTH_SPEED_CONTROL, 4, &val); > >>> val |= PORT_LOGIC_SPEED_CHANGE; > >>> - dw_pcie_wr_own_conf(pp, PCIE_LINK_WIDTH_SPEED_CONTROL, 4, val); > >>> > >>> -#ifdef CONFIG_PCI_MSI > >>> - dw_pcie_msi_chip.dev = pp->dev; > >>> - dw_pci.msi_ctrl = &dw_pcie_msi_chip; > >>> + if (dw_pcie_wr_own_conf(pp, PCIE_LINK_WIDTH_SPEED_CONTROL, 4, val) > >>> + != PCIBIOS_SUCCESSFUL) > >>> + return -EINVAL; > >>> + > >>> + bus = pci_create_root_bus(pp->dev, pp->root_bus_nr, &dw_pcie_ops, > >>> + pp, &res); > >>> + if (!bus) > >>> + return -ENOMEM; > >>> + > >>> +#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN > >>> + bus->msi = container_of(&pp->irq_domain, struct msi_controller, > >>> +domain); #else > >>> + bus->msi = &dw_pcie_msi_chip; > >>> #endif > >>> > >>> - dw_pci.nr_controllers = 1; > >>> - dw_pci.private_data = (void **)&pp; > >>> + pci_scan_child_bus(bus); > >>> + if (pp->ops->scan_bus) > >>> + pp->ops->scan_bus(pp); > >>> > >>> - pci_common_init_dev(pp->dev, &dw_pci); > >>> +#ifdef CONFIG_ARM > >>> + /* support old dtbs that incorrectly describe IRQs */ > >>> + pci_fixup_irqs(pci_common_swizzle, of_irq_parse_and_map_pci); > >> #endif > >>> + > >>> + pci_assign_unassigned_bus_resources(bus); > >>> + pci_bus_add_devices(bus); > >>> > >>> return 0; > >>> } > >>> @@ -653,7 +665,7 @@ static int dw_pcie_valid_config(struct > pcie_port > >> *pp, static int dw_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int > >> where, > >>> int size, u32 *val) > >>> { > >>> - struct pcie_port *pp = sys_to_pcie(bus->sysdata); > >>> + struct pcie_port *pp = bus->sysdata; > >>> int ret; > >>> > >>> if (dw_pcie_valid_config(pp, bus, PCI_SLOT(devfn)) == 0) { @@ - > >> 677,7 +689,7 @@ static int dw_pcie_rd_conf(struct pci_bus *bus, u32 > >> devfn, int where, static int dw_pcie_wr_conf(struct pci_bus *bus, > u32 > >> devfn, > >>> int where, int size, u32 val) > >>> { > >>> - struct pcie_port *pp = sys_to_pcie(bus->sysdata); > >>> + struct pcie_port *pp = bus->sysdata; > >>> int ret; > >>> > >>> if (dw_pcie_valid_config(pp, bus, PCI_SLOT(devfn)) == 0) @@ - > >> 701,64 +713,6 @@ static struct pci_ops dw_pcie_ops = { > >>> .write = dw_pcie_wr_conf, > >>> }; > >>> > >>> -static int dw_pcie_setup(int nr, struct pci_sys_data *sys) -{ > >>> - struct pcie_port *pp; > >>> - > >>> - pp = sys_to_pcie(sys); > >>> - > >>> - if (global_io_offset < SZ_1M && pp->io_size > 0) { > >>> - sys->io_offset = global_io_offset - pp->io_bus_addr; > >>> - pci_ioremap_io(global_io_offset, pp->io_base); > >>> - global_io_offset += SZ_64K; > >>> - pci_add_resource_offset(&sys->resources, &pp->io, > >>> - sys->io_offset); > >>> - } > >>> - > >>> - sys->mem_offset = pp->mem.start - pp->mem_bus_addr; > >>> - pci_add_resource_offset(&sys->resources, &pp->mem, sys- > >>> mem_offset); > >>> - pci_add_resource(&sys->resources, &pp->busn); > >>> - > >>> - return 1; > >>> -} > >>> - > >>> -static struct pci_bus *dw_pcie_scan_bus(int nr, struct > pci_sys_data > >> *sys) -{ > >>> - struct pci_bus *bus; > >>> - struct pcie_port *pp = sys_to_pcie(sys); > >>> - > >>> - pp->root_bus_nr = sys->busnr; > >>> - bus = pci_create_root_bus(pp->dev, sys->busnr, > >>> - &dw_pcie_ops, sys, &sys->resources); > >>> - if (!bus) > >>> - return NULL; > >>> - > >>> - pci_scan_child_bus(bus); > >>> - > >>> - if (bus && pp->ops->scan_bus) > >>> - pp->ops->scan_bus(pp); > >>> - > >>> - return bus; > >>> -} > >>> - > >>> -static int dw_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 > >> pin) -{ > >>> - struct pcie_port *pp = sys_to_pcie(dev->bus->sysdata); > >>> - int irq; > >>> - > >>> - irq = of_irq_parse_and_map_pci(dev, slot, pin); > >>> - if (!irq) > >>> - irq = pp->irq; > >>> - > >>> - return irq; > >>> -} > >>> - > >>> -static struct hw_pci dw_pci = { > >>> - .setup = dw_pcie_setup, > >>> - .scan = dw_pcie_scan_bus, > >>> - .map_irq = dw_pcie_map_irq, > >>> -}; > >>> - > >>> void dw_pcie_setup_rc(struct pcie_port *pp) { > >>> u32 val; > >>> diff --git a/drivers/pci/host/pcie-designware.h > >> b/drivers/pci/host/pcie-designware.h > >>> index d0bbd27..ab78710 100644 > >>> --- a/drivers/pci/host/pcie-designware.h > >>> +++ b/drivers/pci/host/pcie-designware.h > >>> @@ -34,7 +34,7 @@ struct pcie_port { > >>> u64 cfg1_mod_base; > >>> void __iomem *va_cfg1_base; > >>> u32 cfg1_size; > >>> - u64 io_base; > >>> + resource_size_t io_base; > >>> u64 io_mod_base; > >>> phys_addr_t io_bus_addr; > >>> u32 io_size; > >>> @@ -42,10 +42,10 @@ struct pcie_port { > >>> u64 mem_mod_base; > >>> phys_addr_t mem_bus_addr; > >>> u32 mem_size; > >>> - struct resource cfg; > >>> - struct resource io; > >>> - struct resource mem; > >>> - struct resource busn; > >>> + struct resource *cfg; > >>> + struct resource *io; > >>> + struct resource *mem; > >>> + struct resource *busn; > >>> int irq; > >>> u32 lanes; > >>> struct pcie_host_ops *ops; > >>> diff --git a/drivers/pci/host/pcie-spear13xx.c > >> b/drivers/pci/host/pcie-spear13xx.c > >>> index 020d788..e78ddf8 100644 > >>> --- a/drivers/pci/host/pcie-spear13xx.c > >>> +++ b/drivers/pci/host/pcie-spear13xx.c > >>> @@ -287,7 +287,7 @@ static int spear13xx_add_pcie_port(struct > >> pcie_port *pp, > >>> return ret; > >>> } > >>> > >>> - pp->root_bus_nr = -1; > >>> + pp->root_bus_nr = 0; > >>> pp->ops = &spear13xx_pcie_host_ops; > >>> > >>> ret = dw_pcie_host_init(pp); > >>> ------------------------------------ > >>> ------------------------------------ > >>> > >>> > >>> > >>> > >>>> -----Original Message----- > >>>> From: Lorenzo Pieralisi [mailto:lorenzo.pieralisi@xxxxxxx] > >>>> Sent: Tuesday, June 09, 2015 12:15 PM > >>>> To: Wangzhou (B) > >>>> Cc: James Morse; Bjorn Helgaas; Jingoo Han; Pratyush Anand; Arnd > >>>> Bergmann; fabrice.gasnier@xxxxxx; Liviu Dudau; linux- > >>>> pci@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; > >>>> devicetree@xxxxxxxxxxxxxxx; Gabriele Paoloni; Yuanzhichang; > Zhudacai; > >>>> zhangjukuo; qiuzhenfa; Liguozhu (Kenneth) > >>>> Subject: Re: [PATCH v2 2/4] PCI: designware: Add ARM64 support > >>>> > >>>> On Fri, Jun 05, 2015 at 09:11:30AM +0100, Zhou Wang wrote: > >>>> > >>>> [...] > >>>> > >>>>>>> -int dw_pcie_host_init(struct pcie_port *pp) > >>>>>>> +int __init dw_pcie_host_init(struct pcie_port *pp) > >>>>>>> { > >>>>>>> struct device_node *np = pp->dev->of_node; > >>>>>>> struct platform_device *pdev = to_platform_device(pp->dev); > >>>>>>> struct of_pci_range range; > >>>>>>> struct of_pci_range_parser parser; > >>>>>>> + struct pci_bus *bus; > >>>>>>> struct resource *cfg_res; > >>>>>>> + LIST_HEAD(res); > >>>>>>> u32 val, na, ns; > >>>>>>> const __be32 *addrp; > >>>>>>> int i, index, ret; > >>>>>>> @@ -502,15 +498,49 @@ int dw_pcie_host_init(struct pcie_port > *pp) > >>>>>>> val |= PORT_LOGIC_SPEED_CHANGE; > >>>>>>> dw_pcie_wr_own_conf(pp, PCIE_LINK_WIDTH_SPEED_CONTROL, 4, > >>>> val); > >>>>>>> > >>>>>>> -#ifdef CONFIG_PCI_MSI > >>>>>>> - dw_pcie_msi_chip.dev = pp->dev; > >>>>>>> - dw_pci.msi_ctrl = &dw_pcie_msi_chip; > >>>>>>> +#ifdef CONFIG_ARM > >>>>>>> + /* > >>>>>>> + * FIXME: we should really be able to use > >>>>>>> + * of_pci_get_host_bridge_resources on arm32 as well, > >>>>>>> + * but the conversion needs some more testing > >>>>>>> + */ > >>>>>>> + if (global_io_offset < SZ_1M && pp->io_size > 0) { > >>>>>>> + pci_ioremap_io(global_io_offset, pp->io_base); > >>>>>>> + global_io_offset += SZ_64K; > >>>>>>> + pci_add_resource_offset(&res, &pp->io, > >>>>>>> + global_io_offset - pp->io_bus_addr); > >>>>>>> + } > >>>>>>> + pci_add_resource_offset(&res, &pp->mem, > >>>>>>> + pp->mem.start - pp->mem_bus_addr); > >>>>>>> + pci_add_resource(&res, &pp->busn); > >>>>>> > >>>>>> I don't think this #ifdef is necessary. In the spirit of 'the > >>>>>> conversion needs some more testing', I removed it leaving just > the > >>>> below arm64 code. > >>>>>> > >>>>>> This worked on my Freescale i.MX6 Quad SABRE Lite Board, I went > as > >>>>>> far as scanning for wireless access points. > >>>>>> > >>>>> > >>>>> I think it depends on which kind of PCIe device you use, if we > use > >> a > >>>>> PCIe device with a I/O Bar, it may not work well without above > code. > >>>>> But so far, I have not met a PCIe device which must work with a > I/O > >>>> Bar. > >>>> > >>>> There are two problems here: > >>>> > >>>> 1) the io_base address you get from > of_pci_get_host_bridge_resources > >>>> must be mapped using pci_remap_iospace. You are not doing this, > >> so > >>>> even if you had a PCIe card with I/O bar it would not work on > >> arm64 > >>>> as the code stands. Remember that I/O space on arm/arm64 works > as > >> a > >>>> memory access with offset from PCI_IOBASE and that's the value > >> you > >>>> get > >>>> in the I/O resource. See: > >>>> > >>>> drivers/pci/host/pci-host-generic.c > >>>> drivers/pci/host/pci-versatile.c > >>>> drivers/pci/host/pci-xgene.c > >>>> > >>>> 2) (1) above would sort out I/O space access for both arm and > arm64 > >> so, > >>>> as James said, the #ifdef is useless. > >>>> > >>>> I hope this makes things clearer. > >>>> > >>>> Thanks, > >>>> Lorenzo > >>>> > >>>>> > >>>>>>> +#else > >>>>>>> + ret = of_pci_get_host_bridge_resources(np, 0, 0xff, &res, > >>>>>>> +&pp->io_base); > >>>>>> > >>>>>> of_pci_get_host_bridge_resources expects &pp->io_base to be a > >>>>>> resource_size_t*, but &io_base is u64*. This generates a warning > >> on > >>>>>> arm with the above change. Changing the the type in > >>>>>> drivers/pci/host/pcie-designware.h fixes this. > >>>>>> > >>>>>> > >>>>>> Thanks, > >>>>>> > >>>>>> James > >>>>>> > >>>>> > >>>>> OK, will modify this in next version. > >>>>> > >>>>> Best Regards and thanks again for your test, Zhou > >>>>> > >>>>>>> + if (ret) > >>>>>>> + return ret; > >>>>>>> +#endif > >>>>>>> + > >>>>>>> + bus = pci_create_root_bus(pp->dev, pp->root_bus_nr, > >>>> &dw_pcie_ops, > >>>>>>> + pp, &res); > >>>>>>> + if (!bus) > >>>>>>> + return -ENOMEM; > >>>>>>> + > >>>>>>> +#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN > >>>>>>> + bus->msi = container_of(&pp->irq_domain, struct > >>>> msi_controller, > >>>>>>> +domain); #else > >>>>>>> + bus->msi = &dw_pcie_msi_chip; > >>>>>>> #endif > >>>>>>> > >>>>>>> - dw_pci.nr_controllers = 1; > >>>>>>> - dw_pci.private_data = (void **)&pp; > >>>>>>> + pci_scan_child_bus(bus); > >>>>>>> + if (pp->ops->scan_bus) > >>>>>>> + pp->ops->scan_bus(pp); > >>>>>>> > >>>>>>> - pci_common_init_dev(pp->dev, &dw_pci); > >>>>>>> +#ifdef CONFIG_ARM > >>>>>>> + /* support old dtbs that incorrectly describe IRQs */ > >>>>>>> + pci_fixup_irqs(pci_common_swizzle, > >>>> of_irq_parse_and_map_pci); > >>>>>>> +#endif > >>>>>>> + > >>>>>>> + pci_assign_unassigned_bus_resources(bus); > >>>>>>> + pci_bus_add_devices(bus); > >>>>>>> > >>>>>>> return 0; > >>>>>>> } > >>>>>>> @@ -653,7 +683,7 @@ static int dw_pcie_valid_config(struct > >>>>>>> pcie_port *pp, static int dw_pcie_rd_conf(struct pci_bus *bus, > >>>> u32 devfn, int where, > >>>>>>> int size, u32 *val) > >>>>>>> { > >>>>>>> - struct pcie_port *pp = sys_to_pcie(bus->sysdata); > >>>>>>> + struct pcie_port *pp = bus->sysdata; > >>>>>>> int ret; > >>>>>>> > >>>>>>> if (dw_pcie_valid_config(pp, bus, PCI_SLOT(devfn)) == 0) > >>>> { @@ > >>>>>>> -677,7 +707,7 @@ static int dw_pcie_rd_conf(struct pci_bus *bus, > >>>>>>> u32 devfn, int where, static int dw_pcie_wr_conf(struct > pci_bus > >>>> *bus, u32 devfn, > >>>>>>> int where, int size, u32 val) > >>>>>>> { > >>>>>>> - struct pcie_port *pp = sys_to_pcie(bus->sysdata); > >>>>>>> + struct pcie_port *pp = bus->sysdata; > >>>>>>> int ret; > >>>>>>> > >>>>>>> if (dw_pcie_valid_config(pp, bus, PCI_SLOT(devfn)) == 0) @@ > >>>>>>> -701,64 +731,6 @@ static struct pci_ops dw_pcie_ops = { > >>>>>>> .write = dw_pcie_wr_conf, > >>>>>>> }; > >>>>>>> > >>>>>>> -static int dw_pcie_setup(int nr, struct pci_sys_data *sys) -{ > >>>>>>> - struct pcie_port *pp; > >>>>>>> - > >>>>>>> - pp = sys_to_pcie(sys); > >>>>>>> - > >>>>>>> - if (global_io_offset < SZ_1M && pp->io_size > 0) { > >>>>>>> - sys->io_offset = global_io_offset - pp->io_bus_addr; > >>>>>>> - pci_ioremap_io(global_io_offset, pp->io_base); > >>>>>>> - global_io_offset += SZ_64K; > >>>>>>> - pci_add_resource_offset(&sys->resources, &pp->io, > >>>>>>> - sys->io_offset); > >>>>>>> - } > >>>>>>> - > >>>>>>> - sys->mem_offset = pp->mem.start - pp->mem_bus_addr; > >>>>>>> - pci_add_resource_offset(&sys->resources, &pp->mem, sys- > >>>>> mem_offset); > >>>>>>> - pci_add_resource(&sys->resources, &pp->busn); > >>>>>>> - > >>>>>>> - return 1; > >>>>>>> -} > >>>>>>> - > >>>>>>> -static struct pci_bus *dw_pcie_scan_bus(int nr, struct > >>>>>>> pci_sys_data *sys) -{ > >>>>>>> - struct pci_bus *bus; > >>>>>>> - struct pcie_port *pp = sys_to_pcie(sys); > >>>>>>> - > >>>>>>> - pp->root_bus_nr = sys->busnr; > >>>>>>> - bus = pci_create_root_bus(pp->dev, sys->busnr, > >>>>>>> - &dw_pcie_ops, sys, &sys->resources); > >>>>>>> - if (!bus) > >>>>>>> - return NULL; > >>>>>>> - > >>>>>>> - pci_scan_child_bus(bus); > >>>>>>> - > >>>>>>> - if (bus && pp->ops->scan_bus) > >>>>>>> - pp->ops->scan_bus(pp); > >>>>>>> - > >>>>>>> - return bus; > >>>>>>> -} > >>>>>>> - > >>>>>>> -static int dw_pcie_map_irq(const struct pci_dev *dev, u8 slot, > >> u8 > >>>>>>> pin) -{ > >>>>>>> - struct pcie_port *pp = sys_to_pcie(dev->bus->sysdata); > >>>>>>> - int irq; > >>>>>>> - > >>>>>>> - irq = of_irq_parse_and_map_pci(dev, slot, pin); > >>>>>>> - if (!irq) > >>>>>>> - irq = pp->irq; > >>>>>>> - > >>>>>>> - return irq; > >>>>>>> -} > >>>>>>> - > >>>>>>> -static struct hw_pci dw_pci = { > >>>>>>> - .setup = dw_pcie_setup, > >>>>>>> - .scan = dw_pcie_scan_bus, > >>>>>>> - .map_irq = dw_pcie_map_irq, > >>>>>>> -}; > >>>>>>> - > >>>>>>> void dw_pcie_setup_rc(struct pcie_port *pp) { > >>>>>>> u32 val; > >>>>>> > >>>>>> > >>>>>> . > >>>>>> > >>>>> > >>>>> > >>>>> -- > >>>>> To unsubscribe from this list: send the line "unsubscribe linux- > >> pci" > >>>>> in the body of a message to majordomo@xxxxxxxxxxxxxxx More > >> majordomo > >>>>> info at http://vger.kernel.org/majordomo-info.html > >>>>> > >>> > >>> . > >>> > >> > > > > > > . > > > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html