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Diffstat (limited to 'drivers/pci/ecam.h')
-rw-r--r--drivers/pci/ecam.h67
1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/pci/ecam.h b/drivers/pci/ecam.h
new file mode 100644
index 000000000..9878bebd4
--- /dev/null
+++ b/drivers/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