diff options
| author | Jayachandran C | 2016-06-10 21:55:09 +0200 |
|---|---|---|
| committer | Bjorn Helgaas | 2016-06-10 15:21:17 -0500 |
| commit | 80955f9ee51760db64795b3778365ccb8c3a2729 (patch) | |
| tree | 8afd490616bc73edd7d494a5d518ce05d1f84bea /include | |
| parent | af8c34ce6ae32addda3788d54a7e340cad22516b (diff) | |
PCI: Move ecam.h to linux/include/pci-ecam.h
This header will be used from arch/arm64 for ACPI PCI implementation so it
needs to be moved out of drivers/pci.
Update users of the header file to use the new name. No functional
changes.
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/pci-ecam.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/include/linux/pci-ecam.h b/include/linux/pci-ecam.h new file mode 100644 index 000000000000..9878bebd45bb --- /dev/null +++ b/include/linux/pci-ecam.h @@ -0,0 +1,67 @@ +/* + * Copyright 2016 Broadcom + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License, version 2, as + * published by the Free Software Foundation (the "GPL"). + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License version 2 (GPLv2) for more details. + * + * You should have received a copy of the GNU General Public License + * version 2 (GPLv2) along with this source code. + */ +#ifndef DRIVERS_PCI_ECAM_H +#define DRIVERS_PCI_ECAM_H + +#include <linux/kernel.h> +#include <linux/platform_device.h> + +/* + * struct to hold pci ops and bus shift of the config window + * for a PCI controller. + */ +struct pci_config_window; +struct pci_ecam_ops { + unsigned int bus_shift; + struct pci_ops pci_ops; + int (*init)(struct device *, + struct pci_config_window *); +}; + +/* + * struct to hold the mappings of a config space window. This + * is expected to be used as sysdata for PCI controllers that + * use ECAM. + */ +struct pci_config_window { + struct resource res; + struct resource busr; + void *priv; + struct pci_ecam_ops *ops; + union { + void __iomem *win; /* 64-bit single mapping */ + void __iomem **winp; /* 32-bit per-bus mapping */ + }; +}; + +/* create and free pci_config_window */ +struct pci_config_window *pci_ecam_create(struct device *dev, + struct resource *cfgres, struct resource *busr, + struct pci_ecam_ops *ops); +void pci_ecam_free(struct pci_config_window *cfg); + +/* map_bus when ->sysdata is an instance of pci_config_window */ +void __iomem *pci_ecam_map_bus(struct pci_bus *bus, unsigned int devfn, + int where); +/* default ECAM ops */ +extern struct pci_ecam_ops pci_generic_ecam_ops; + +#ifdef CONFIG_PCI_HOST_GENERIC +/* for DT-based PCI controllers that support ECAM */ +int pci_host_common_probe(struct platform_device *pdev, + struct pci_ecam_ops *ops); +#endif +#endif |