linux-toradex.git/include/linux/pci-ecam.h, branch v5.10-rc2

PCI/ACPI: Add Ampere Altra SOC MCFG quirk

2020-09-17T17:27:43+00:00

Ampere Altra SOC supports only 32-bit ECAM reads.  Add an MCFG quirk for
the platform.

Link: https://lore.kernel.org/r/1596751055-12316-1-git-send-email-tuanphan@os.amperecomputing.com
Signed-off-by: Tuan Phan 
Signed-off-by: Bjorn Helgaas

PCI: host-generic: Eliminate pci_host_common_probe wrappers

2020-05-07T08:29:43+00:00

Most ECAM host drivers are just different pci_ecam_ops which can be DT
match table data. That's already the case in some cases, but let's
do that for all the ECAM drivers. Then we can use
of_device_get_match_data() in pci_host_common_probe() and eliminate the
probe wrapper functions and use pci_host_common_probe() directly for
probe.

Link: https://lore.kernel.org/r/20200409234923.21598-4-robh@kernel.org
Signed-off-by: Rob Herring 
Signed-off-by: Lorenzo Pieralisi 
Acked-by: Bjorn Helgaas 
Cc: Zhou Wang 
Cc: Lorenzo Pieralisi 
Cc: Andrew Murray 
Cc: Bjorn Helgaas 
Cc: Will Deacon 
Cc: Robert Richter 
Cc: Marc Gonzalez 
Cc: Mans Rullgard 
Cc: linux-pci@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org

PCI: host-generic: Support building as modules

2020-05-01T15:29:27+00:00

Enable building host-generic and its host-common dependency as a
module.

Link: https://lore.kernel.org/r/20200409234923.21598-3-robh@kernel.org
Signed-off-by: Rob Herring 
Signed-off-by: Lorenzo Pieralisi 
Acked-by: Will Deacon 
Acked-by: Bjorn Helgaas 
Cc: Lorenzo Pieralisi 
Cc: Andrew Murray 
Cc: Bjorn Helgaas 
Cc: Will Deacon 
Cc: linux-pci@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org

PCI: Constify struct pci_ecam_ops

2020-05-01T15:28:59+00:00

struct pci_ecam_ops is typically DT match table data which is defined to
be const. It's also best practice for ops structs to be const. Ideally,
we'd make struct pci_ops const as well, but that becomes pretty
invasive, so for now we just cast it where needed.

Link: https://lore.kernel.org/r/20200409234923.21598-2-robh@kernel.org
Signed-off-by: Rob Herring 
Signed-off-by: Lorenzo Pieralisi 
Acked-by: Bjorn Helgaas 
Acked-by: Catalin Marinas 
Cc: Catalin Marinas 
Cc: Will Deacon 
Cc: Lorenzo Pieralisi 
Cc: Andrew Murray 
Cc: Bjorn Helgaas 
Cc: "Rafael J. Wysocki" 
Cc: Len Brown 
Cc: Jonathan Chocron 
Cc: Zhou Wang 
Cc: Robert Richter 
Cc: Toan Le 
Cc: Marc Gonzalez 
Cc: Mans Rullgard 
Cc: linux-acpi@vger.kernel.org

PCI: al: Add Amazon Annapurna Labs PCIe host controller driver

2019-04-25T21:33:07+00:00

Add driver for Amazon's Annapurna Labs PCIe host controller.  The
controller is based on DesignWare's IP.

The controller doesn't support accessing the Root Port's config space via
ECAM, so we obtain its base address via an AMZN0001 device.

Furthermore, the DesignWare PCIe controller doesn't filter out config
transactions sent to devices 1 and up on its bus, so they are filtered by
the driver.

All subordinate buses do support ECAM access.

Implementing specific PCI config access functions involves:
 - Adding an init function to obtain the Root Port's base address from
   an AMZN0001 device.
 - Adding a new entry in the MCFG quirk array.

[bhelgaas: Note that there is no Kconfig option for this driver because it
is only intended for use with the generic ACPI host bridge driver.  This
driver is only needed because the DesignWare IP doesn't completely support
ECAM access to the root bus.]

Link: https://lore.kernel.org/lkml/1553774276-24675-1-git-send-email-jonnyc@amazon.com
Co-developed-by: Vladimir Aerov 
Signed-off-by: Jonathan Chocron 
Signed-off-by: Vladimir Aerov 
Signed-off-by: Bjorn Helgaas 
Reviewed-by: David Woodhouse 
Reviewed-by: Benjamin Herrenschmidt 
Acked-by: Lorenzo Pieralisi

PCI: Add support for unbinding the generic PCI host controller

2018-05-30T16:35:23+00:00

Add support for unbinding the generic PCI host controller.  This is
particularly useful when working in virtual environments where the
controller may come and go, but possibly not only there.

Signed-off-by: Jan Kiszka 
Signed-off-by: Bjorn Helgaas 
CC: Will Deacon 
CC: Lorenzo Pieralisi

PCI: Add SPDX GPL-2.0 to replace GPL v2 boilerplate

2018-01-28T21:48:29+00:00

Add SPDX GPL-2.0 to all PCI files that specified the GPL version 2 license.

Remove the boilerplate GPL version 2 language, relying on the assertion in
b24413180f56 ("License cleanup: add SPDX GPL-2.0 license identifier to
files with no license") that the SPDX identifier may be used instead of the
full boilerplate text.

Signed-off-by: Bjorn Helgaas 
Reviewed-by: Greg Kroah-Hartman

PCI: Change pci_host_common_probe() visibility

2017-04-18T19:21:04+00:00

pci_host_common_probe() is defined when CONFIG_PCI_HOST_COMMON=y;
therefore the function declaration should match that.

  drivers/pci/host/pcie-tango.c:300:9: error:
	implicit declaration of function 'pci_host_common_probe'

Signed-off-by: Marc Gonzalez 
Signed-off-by: Bjorn Helgaas

PCI: Include pci.h for struct pci_ops definition

2017-03-23T13:44:14+00:00

struct pci_ecam_ops embeds a struct pci_ops.  Explicitly request the
definition for struct pci_ops, otherwise gcc might complain:

  include/linux/pci-ecam.h:29:19: error: field 'pci_ops' has incomplete type

Signed-off-by: Marc Gonzalez 
Signed-off-by: Bjorn Helgaas

PCI: Add MCFG quirks for X-Gene host controller

2016-12-06T19:45:50+00:00

PCIe controllers in X-Gene SoCs are not ECAM compliant: software needs to
configure additional controller's register to address device at
bus:dev:function.

Add a quirk to discover controller MMIO register space and configure
controller registers to select and address the target secondary device.

The quirk will only be applied for X-Gene PCIe MCFG table with
OEM revison 1, 2, 3 or 4 (PCIe controller v1 and v2 on X-Gene SoCs).

Tested-by: Jon Masters 
Signed-off-by: Duc Dang 
Signed-off-by: Bjorn Helgaas