1. 12 3月, 2016 1 次提交
  2. 09 1月, 2016 1 次提交
  3. 08 1月, 2016 1 次提交
  4. 07 1月, 2016 1 次提交
    • R
      PCI: iproc: Add iProc PCIe MSI support · 3bc2b234
      Ray Jui 提交于
      Add PCIe MSI support for both PAXB and PAXC interfaces on all iProc-based
      platforms.
      
      The iProc PCIe MSI support deploys an event queue-based implementation.
      Each event queue is serviced by a GIC interrupt and can support up to 64
      MSI vectors.  Host memory is allocated for the event queues, and each event
      queue consists of 64 word-sized entries.  MSI data is written to the lower
      16-bit of each entry, whereas the upper 16-bit of the entry is reserved for
      the controller for internal processing.
      
      Each event queue is tracked by a head pointer and tail pointer.  Head
      pointer indicates the next entry in the event queue to be processed by
      the driver and is updated by the driver after processing is done.
      The controller uses the tail pointer as the next MSI data insertion
      point.  The controller ensures MSI data is flushed to host memory before
      updating the tail pointer and then triggering the interrupt.
      
      MSI IRQ affinity is supported by evenly distributing the interrupts to each
      CPU core.  MSI vector is moved from one GIC interrupt to another in order
      to steer to the target CPU.
      
      Therefore, the actual number of supported MSI vectors is:
      
        M * 64 / N
      
      where M denotes the number of GIC interrupts (event queues), and N denotes
      the number of CPU cores.
      
      This iProc event queue-based MSI support should not be used with newer
      platforms with integrated MSI support in the GIC (e.g., giv2m or
      gicv3-its).
      
      [bhelgaas: fold in Kconfig fixes from Arnd Bergmann <arnd@arndb.de>]
      Signed-off-by: NRay Jui <rjui@broadcom.com>
      Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
      Reviewed-by: NAnup Patel <anup.patel@broadcom.com>
      Reviewed-by: NVikram Prakash <vikramp@broadcom.com>
      Reviewed-by: NScott Branden <sbranden@broadcom.com>
      Reviewed-by: NMarc Zyngier <marc.zyngier@arm.com>
      3bc2b234
  5. 06 1月, 2016 1 次提交
  6. 09 12月, 2015 1 次提交
  7. 25 11月, 2015 1 次提交
    • A
      PCI: iproc: Hide CONFIG_PCIE_IPROC · c1b98e41
      Arnd Bergmann 提交于
      PCIE_IPROC_BCMA does not require CONFIG_OF in Kconfig, but
      CONFIG_PCIE_IPROC does, so we can get a warning when building for an ARM
      platform without DT support:
      
        warning: (PCIE_IPROC_PLATFORM && PCIE_IPROC_BCMA) selects PCIE_IPROC which has unmet direct dependencies (PCI && OF && (ARM || ARM64))
      
      It turns out that CONFIG_PCIE_IPROC never needs to be enabled by a user
      anyway, we can simply rely on it being selected implictly through either
      PCIE_IPROC_PLATFORM or PCIE_IPROC_BCMA.
      
      Fixes: 4785ffbd ("PCI: iproc: Add BCMA PCIe driver")
      Signed-off-by: NArnd Bergmann <arnd@arndb.de>
      Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
      Acked-by: NHauke Mehrtens <hauke@hauke-m.de>
      c1b98e41
  8. 03 11月, 2015 3 次提交
  9. 30 10月, 2015 2 次提交
    • G
      PCI: rcar: Build pcie-rcar.c only on ARM · 7c537c67
      Geert Uytterhoeven 提交于
      The pcie-rcar.c driver (controlled by PCI_RCAR_GEN2_PCIE) uses struct
      pci_sys_data and pci_ioremap_io(), which only exist on ARM.  Building it on
      other arches, e.g., arm64/shmobile, causes errors like this:
      
        drivers/pci/host/pcie-rcar.c:138:52: warning: 'struct pci_sys_data' declared inside parameter list
        drivers/pci/host/pcie-rcar.c:380:4: error: implicit declaration of function 'pci_ioremap_io' [-Werror=implicit-function-declaration]
      
      Build pcie-rcar.c only on ARM.
      
      [bhelgaas: changelog, split to separate pci-rcar-gen2 from pcie-rcar]
      Reported-by: Wolfram Sang <wsa@the-dreams.de> (pci_ioremap_io())
      Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
      Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
      7c537c67
    • G
      PCI: rcar: Build pci-rcar-gen2.c only on ARM · 6cbfeae7
      Geert Uytterhoeven 提交于
      The pci-rcar-gen2.c driver (controlled by PCI_RCAR_GEN2) uses struct
      pci_sys_data, which only exists on ARM.  Building it on other arches, e.g.,
      arm64/shmobile, causes errors like this:
      
        drivers/pci/host/pci-rcar-gen2.c: In function 'rcar_pci_cfg_base': drivers/pci/host/pci-rcar-gen2.c:112:34: error: dereferencing pointer to incomplete type
          struct rcar_pci_priv *priv = sys->private_data;
                                          ^
      
      Build pci-rcar-gen2.c only on ARM.
      
      [bhelgaas: changelog, split to separate pci-rcar-gen2 from pcie-rcar]
      Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
      Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
      6cbfeae7
  10. 24 10月, 2015 1 次提交
  11. 21 8月, 2015 1 次提交
  12. 12 8月, 2015 1 次提交
  13. 30 7月, 2015 2 次提交
  14. 06 6月, 2015 1 次提交
    • D
      PCI: xgene: Add APM X-Gene v1 PCIe MSI/MSIX termination driver · dcd19de3
      Duc Dang 提交于
      APM X-Gene v1 SoC supports its own implementation of MSI, which is not
      compliant to GIC V2M specification for MSI Termination.
      
      There is a single MSI block in X-Gene v1 SOC which serves all 5 PCIe ports.
      This MSI block supports 2048 MSI termination ports coalesced into 16
      physical HW IRQ lines and shared across all 5 PCIe ports.
      
      As there are only 16 HW IRQs to serve 2048 MSI vectors, to support
      set_affinity correctly for each MSI vectors, the 16 HW IRQs are statically
      allocated to 8 X-Gene v1 cores (2 HW IRQs for each cores).  To steer MSI
      interrupt to target CPU, MSI vector is moved around these HW IRQs lines.
      With this approach, the total MSI vectors this driver supports is reduced
      to 256.
      
      [bhelgaas: squash doc, driver, maintainer update]
      Signed-off-by: NDuc Dang <dhdang@apm.com>
      Signed-off-by: NTanmay Inamdar <tinamdar@apm.com>
      Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
      Reviewed-by: NMarc Zyngier <marc.zyngier@arm.com>
      dcd19de3
  15. 20 5月, 2015 1 次提交
    • H
      PCI: iproc: Add BCMA PCIe driver · 4785ffbd
      Hauke Mehrtens 提交于
      This driver adds support for the PCIe 2.0 controller found on the BCMA bus.
      This controller can be found on (mostly) all Broadcom BCM470X / BCM5301X
      ARM SoCs.
      
      The driver found in the Broadcom SDK does some more stuff, like setting up
      some DMA memory areas, chaining MPS and MRRS to 512 and also some PHY
      changes like "improving" the PCIe jitter and doing some special
      initialization for the 3rd PCIe port.
      
      This was tested on a bcm4708 board with 2 PCIe ports and wireless cards
      connected to them.
      
      PCI_DOMAINS is needed by this driver, because normally there is more than
      one PCIe controller and without PCI_DOMAINS only the first controller gets
      registered.  This controller gets 6 IRQs; the last one is trigged by all
      IRQ events.
      
      [bhelgaas: fix "GPLv2" MODULE_LICENSE typo]
      Signed-off-by: NHauke Mehrtens <hauke@hauke-m.de>
      Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
      Acked-by: NRafał Miłecki <zajec5@gmail.com>
      Acked-by: NRay Jui <rjui@broadcom.com.com>
      4785ffbd
  16. 09 4月, 2015 1 次提交
  17. 29 1月, 2015 1 次提交
  18. 14 11月, 2014 3 次提交
  19. 02 10月, 2014 1 次提交
  20. 05 9月, 2014 1 次提交
    • M
      PCI: keystone: Add TI Keystone PCIe driver · 0c4ffcfe
      Murali Karicheri 提交于
      The Keystone PCIe controller is based on v3.65 version of the Designware
      h/w.  Main differences are:
      
          1. No ATU support
          2. Legacy and MSI IRQ functions are implemented in application register
             space
          3. MSI interrupts are multiplexed over 8 IRQ lines to the Host side.
      
      All of the application register space handing code is organized into
      pci-keystone-dw.c and the functions are called from pci-keystone.c to
      implement PCI controller driver.  Also add necessary DT documentation and
      update the MAINTAINERS file for the driver.
      
      [bhelgaas: spelling and whitespace fixes]
      Signed-off-by: NMurali Karicheri <m-karicheri2@ti.com>
      Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
      Acked-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
      CC: Russell King <linux@arm.linux.org.uk>
      CC: Grant Likely <grant.likely@linaro.org>
      CC: Rob Herring <robh+dt@kernel.org>
      CC: Mohit Kumar <mohit.kumar@st.com>
      CC: Pratyush Anand <pratyush.anand@st.com>
      CC: Jingoo Han <jg1.han@samsung.com>
      CC: Richard Zhu <r65037@freescale.com>
      CC: Kishon Vijay Abraham I <kishon@ti.com>
      CC: Marek Vasut <marex@denx.de>
      CC: Arnd Bergmann <arnd@arndb.de>
      CC: Pawel Moll <pawel.moll@arm.com>
      CC: Mark Rutland <mark.rutland@arm.com>
      CC: Ian Campbell <ijc+devicetree@hellion.org.uk>
      CC: Kumar Gala <galak@codeaurora.org>
      CC: Randy Dunlap <rdunlap@infradead.org>
      CC: Grant Likely <grant.likely@linaro.org>
      0c4ffcfe
  21. 04 9月, 2014 1 次提交
  22. 18 8月, 2014 1 次提交
    • S
      PCI: spear: Remove module option · 8d7004a6
      Sachin Kamat 提交于
      We get the following error when built as a module. Though the general fix
      would be in this case to export the below mentioned symbols, considering
      that dw_pcie_host_init() is marked with __init and other PCI drivers do not
      support modular build, I have disabled building this driver as a module
      too.
      
        ERROR: "dw_pcie_host_init" [drivers/pci/host/pcie-spear13xx.ko] undefined!
        ERROR: "dw_handle_msi_irq" [drivers/pci/host/pcie-spear13xx.ko] undefined!
        ERROR: "dw_pcie_msi_init" [drivers/pci/host/pcie-spear13xx.ko] undefined!
        ERROR: "dw_pcie_cfg_write" [drivers/pci/host/pcie-spear13xx.ko] undefined!
        ERROR: "dw_pcie_cfg_read" [drivers/pci/host/pcie-spear13xx.ko] undefined!
        ERROR: "dw_pcie_setup_rc" [drivers/pci/host/pcie-spear13xx.ko] undefined!
        ERROR: "dw_pcie_link_up" [drivers/pci/host/pcie-spear13xx.ko] undefined!
        make[1]: *** [__modpost] Error 1
        make: *** [modules] Error 2
      Signed-off-by: NSachin Kamat <sachin.kamat@samsung.com>
      Signed-off-by: NBjorn Helgaas <bhelgaas@google.com>
      Reviewed-by: NJingoo Han <jg1.han@samsung.com>
      Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
      8d7004a6
  23. 23 7月, 2014 2 次提交
  24. 14 7月, 2014 1 次提交
  25. 31 5月, 2014 1 次提交
  26. 28 5月, 2014 1 次提交
  27. 27 2月, 2014 1 次提交
  28. 31 10月, 2013 1 次提交
  29. 30 9月, 2013 1 次提交
  30. 28 9月, 2013 1 次提交
  31. 14 8月, 2013 1 次提交
  32. 13 8月, 2013 1 次提交
  33. 27 6月, 2013 1 次提交