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Message-ID: <CAErSpo7EdJkxOq6f-1htW7LWDc42bVGqBDirzV6v=u5PxYo4tQ@mail.gmail.com> Date: Fri, 30 Jan 2015 09:45:02 -0600 From: Bjorn Helgaas <bhelgaas@...gle.com> To: Yijing Wang <wangyijing@...wei.com> Cc: Jiang Liu <jiang.liu@...ux.intel.com>, "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>, Yinghai Lu <yinghai@...nel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, Marc Zyngier <marc.zyngier@....com>, linux-arm <linux-arm-kernel@...ts.infradead.org>, Russell King <linux@....linux.org.uk>, "x86@...nel.org" <x86@...nel.org>, Thomas Gleixner <tglx@...utronix.de>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Rusty Russell <rusty@...tcorp.com.au>, Tony Luck <tony.luck@...el.com>, "linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>, "David S. Miller" <davem@...emloft.net>, Guan Xuetao <gxt@...c.pku.edu.cn>, linux-alpha@...r.kernel.org, linux-m68k@...ts.linux-m68k.org, Liviu Dudau <liviu@...au.co.uk>, Arnd Bergmann <arnd@...db.de>, Geert Uytterhoeven <geert@...ux-m68k.org> Subject: Re: [PATCH v2 00/30] Refine PCI scan interfaces and make generic pci host bridge On Fri, Jan 30, 2015 at 3:10 AM, Yijing Wang <wangyijing@...wei.com> wrote: > Hi Bjorn, > Any comments for this series ? I'm so sorry to bother you. :) It's next in my queue after Wei Yang's powerpc sriov series. Here's the queue I work from: https://patchwork.ozlabs.org/project/linux-pci/list/?order=date Bjorn > On 2015/1/21 8:29, Yijing Wang wrote: >> v1->v2: >> Split pci_host_bridge_list into a new patch, remove .phb_probe_mode >> and rework powerpc .phb_of_scan_bus() for simpilicty suggested by >> Arnd. Refresh some patch description log, and add a new patch to fix >> build warning in ia64. >> >> This series is based on Bjorn's pci-next branch. >> >> Patch 1-4 ripped out pci_bus_add_devices() from pci scan interfaces >> for better pci scan flow. >> >> Patch 5-11 make a generic pci_host_bridge to hold pci_host_bridge >> related informations, and introduce a pci_host_bridge_ops to >> support platform host drivers provide its own pci_host_bridge >> related operations to setup pci_host_bridge during pci enumeration. >> >> Patch 12-28 apply the new pci scan interfaces to platform pci host >> bridge drivers. >> >> Now in kernel, we scan pci bus use the following ways: >> 1. pci_scan_bus. >> parent = NULL, default io/mem/bus resources >> call pci_bus_add_devices() >> >> 2. pci_scan_bus_parented() + pci_bus_add_devices() >> default io/mem/bus resources, only used by xen >> >> 3. pci_scan_root_bus() + pci_bus_add_devices() >> >> 4. pci_create_root_bus() + pci_scan_child_bus() + pci_bus_add_devices() >> >> 5. pci_create_root_bus() + xx_of_scan_bus() + pci_bus_add_devices() >> >> And we have a lot of arch specific pci_domain_nr() and other platform >> specific weak function like pcibios_root_bridge_prepare(). >> >> After applied this series, we have following scan interfaces: >> >> 1. pci_scan_bus_legacy() >> parent = NULL, default io/mem/bus resources. >> for legacy pci scan >> >> 2. pci_scan_root_bus() >> for callers provide its own parent and io/mem/bus resources >> but no platform specific pci_host_bridge operations >> >> 3. pci_scan_root_bridge() >> for callers provide its own parent and io/mem/bus resources >> and pci_host_bridge_ops. >> >> Besides, above pci scan interfaces all need addtionally call pci_bus_add_devices() >> to set match_driver true and try to attach drivers. >> >> Also we could eliminate all arch specific pci_domain_nr() after applied this series. >> >> I tested this series on x86 (with or without ACPI). >> Comments and tests are warmly welcome! >> >> Arnd Bergmann (1): >> xen/PCI: Don't use deprecated function pci_scan_bus_parented() >> >> Yijing Wang (29): >> PCI: Rip out pci_bus_add_devices() from pci_scan_bus() >> PCI: Rip out pci_bus_add_devices() from pci_scan_root_bus() >> PCI: Remove deprecated pci_scan_bus_parented() >> PCI: Rename pci_scan_bus() to pci_scan_bus_legacy() >> PCI: Combine PCI domain and bus number in u32 arg >> PCI: Pass PCI domain number combined with root bus number >> PCI: Introduce pci_host_assign_domain_nr() to assign domain >> PCI: Separate pci_host_bridge creation out of pci_create_root_bus() >> PCI: Introduce pci_host_bridge_list to manage host bridges >> PCI: Save sysdata in pci_host_bridge drvdata >> PCI: Introduce pci_host_bridge_ops to support host specific >> operations >> PCI: Introduce new scan function pci_scan_root_bridge() >> PCI/x86: Refine pci_acpi_scan_root() with generic pci_host_bridge >> PCI/IA64: Refine pci_acpi_scan_root() with generic pci_host_bridge >> PCI/IA64: Fix the build warning about pci_domain_nr() >> PCI/powerpc: Rename pcibios_root_bridge_prepare() >> PCI/powerpc: Use pci_scan_root_bridge() for simplicity >> PCI: Remove weak pcibios_root_bridge_prepare() >> PCI/sparc: Use pci_scan_root_bridge() for simplicity >> PCI: Introduce pci_bus_child_max_busnr() >> PCI/Parisc: Use pci_scan_root_bus() for simplicity >> PCI/mvebu: Use pci_common_init_dev() to simplify code >> PCI/tegra: Remove redundant tegra_pcie_scan_bus() >> PCI/designware: Use pci_scan_root_bus() for simplicity >> PCI/xgene: Use pci_scan_root_bus() instead of pci_create_root_bus() >> PCI: Rename __pci_create_root_bus() to pci_create_root_bus() >> PCI: Export find_pci_host_bridge() >> PCI: Remove platform specific pci_domain_nr() >> PCI: Remove pci_bus_assign_domain_nr() >> >> arch/alpha/include/asm/pci.h | 2 - >> arch/alpha/kernel/pci.c | 7 +- >> arch/alpha/kernel/sys_nautilus.c | 4 +- >> arch/frv/mb93090-mb00/pci-vdk.c | 6 +- >> arch/ia64/include/asm/pci.h | 1 - >> arch/ia64/pci/pci.c | 34 +++--- >> arch/ia64/sn/kernel/io_acpi_init.c | 6 +- >> arch/ia64/sn/kernel/io_init.c | 8 +- >> arch/m68k/coldfire/pci.c | 3 +- >> arch/microblaze/pci/pci-common.c | 17 +-- >> arch/mips/include/asm/pci.h | 2 - >> arch/mips/pci/pci.c | 5 +- >> arch/mn10300/unit-asb2305/pci.c | 5 +- >> arch/powerpc/include/asm/machdep.h | 2 +- >> arch/powerpc/kernel/pci-common.c | 77 ++++++------ >> arch/powerpc/platforms/pseries/pci.c | 8 +- >> arch/powerpc/platforms/pseries/pseries.h | 2 +- >> arch/powerpc/platforms/pseries/setup.c | 2 +- >> arch/s390/pci/pci.c | 13 +-- >> arch/sh/drivers/pci/pci.c | 6 +- >> arch/sh/include/asm/pci.h | 2 - >> arch/sparc/kernel/leon_pci.c | 1 + >> arch/sparc/kernel/pci.c | 50 ++++---- >> arch/sparc/kernel/pcic.c | 4 +- >> arch/tile/include/asm/pci.h | 2 - >> arch/tile/kernel/pci.c | 6 +- >> arch/tile/kernel/pci_gx.c | 7 +- >> arch/unicore32/kernel/pci.c | 13 +-- >> arch/x86/include/asm/pci.h | 6 - >> arch/x86/pci/acpi.c | 38 +++--- >> arch/x86/pci/common.c | 4 +- >> arch/xtensa/kernel/pci.c | 2 + >> drivers/parisc/dino.c | 11 +-- >> drivers/parisc/lba_pci.c | 7 +- >> drivers/pci/host-bridge.c | 90 ++++++++++++++- >> drivers/pci/host/pci-mvebu.c | 18 +--- >> drivers/pci/host/pci-tegra.c | 16 --- >> drivers/pci/host/pci-xgene.c | 3 +- >> drivers/pci/host/pcie-designware.c | 4 +- >> drivers/pci/hotplug/acpiphp_glue.c | 29 +----- >> drivers/pci/hotplug/ibmphp_core.c | 6 +- >> drivers/pci/pci.c | 42 ++++++- >> drivers/pci/probe.c | 196 ++++++++++++------------------ >> drivers/pci/xen-pcifront.c | 11 ++- >> include/linux/pci.h | 47 +++++--- >> include/uapi/linux/pci.h | 3 + >> 46 files changed, 424 insertions(+), 404 deletions(-) >> >> >> . >> > > > -- > Thanks! > Yijing > > -- > To unsubscribe from this list: send the line "unsubscribe linux-pci" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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