File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/arch/powerpc/include/asm/macio.h b/arch/powerpc/include/asm/macio.h
new file mode 100644
index 0000000..27af7f8
--- /dev/null
+++ b/arch/powerpc/include/asm/macio.h
@@ -0,0 +1,144 @@
+#ifndef __MACIO_ASIC_H__
+#define __MACIO_ASIC_H__
+#ifdef __KERNEL__
+
+#include <linux/of_device.h>
+
+extern struct bus_type macio_bus_type;
+
+/* MacIO device driver is defined later */
+struct macio_driver;
+struct macio_chip;
+
+#define MACIO_DEV_COUNT_RESOURCES 8
+#define MACIO_DEV_COUNT_IRQS 8
+
+/*
+ * the macio_bus structure is used to describe a "virtual" bus
+ * within a MacIO ASIC. It's typically provided by a macio_pci_asic
+ * PCI device, but could be provided differently as well (nubus
+ * machines using a fake OF tree).
+ *
+ * The pdev field can be NULL on non-PCI machines
+ */
+struct macio_bus
+{
+ struct macio_chip *chip; /* macio_chip (private use) */
+ int index; /* macio chip index in system */
+#ifdef CONFIG_PCI
+ struct pci_dev *pdev; /* PCI device hosting this bus */
+#endif
+};
+
+/*
+ * the macio_dev structure is used to describe a device
+ * within an Apple MacIO ASIC.
+ */
+struct macio_dev
+{
+ struct macio_bus *bus; /* macio bus this device is on */
+ struct macio_dev *media_bay; /* Device is part of a media bay */
+ struct platform_device ofdev;
+ struct device_dma_parameters dma_parms; /* ide needs that */
+ int n_resources;
+ struct resource resource[MACIO_DEV_COUNT_RESOURCES];
+ int n_interrupts;
+ struct resource interrupt[MACIO_DEV_COUNT_IRQS];
+};
+#define to_macio_device(d) container_of(d, struct macio_dev, ofdev.dev)
+#define of_to_macio_device(d) container_of(d, struct macio_dev, ofdev)
+
+extern struct macio_dev *macio_dev_get(struct macio_dev *dev);
+extern void macio_dev_put(struct macio_dev *dev);
+
+/*
+ * Accessors to resources & interrupts and other device
+ * fields
+ */
+
+static inline int macio_resource_count(struct macio_dev *dev)
+{
+ return dev->n_resources;
+}
+
+static inline unsigned long macio_resource_start(struct macio_dev *dev, int resource_no)
+{
+ return dev->resource[resource_no].start;
+}
+
+static inline unsigned long macio_resource_end(struct macio_dev *dev, int resource_no)
+{
+ return dev->resource[resource_no].end;
+}
+
+static inline unsigned long macio_resource_len(struct macio_dev *dev, int resource_no)
+{
+ struct resource *res = &dev->resource[resource_no];
+ if (res->start == 0 || res->end == 0 || res->end < res->start)
+ return 0;
+ return resource_size(res);
+}
+
+extern int macio_enable_devres(struct macio_dev *dev);
+
+extern int macio_request_resource(struct macio_dev *dev, int resource_no, const char *name);
+extern void macio_release_resource(struct macio_dev *dev, int resource_no);
+extern int macio_request_resources(struct macio_dev *dev, const char *name);
+extern void macio_release_resources(struct macio_dev *dev);
+
+static inline int macio_irq_count(struct macio_dev *dev)
+{
+ return dev->n_interrupts;
+}
+
+static inline int macio_irq(struct macio_dev *dev, int irq_no)
+{
+ return dev->interrupt[irq_no].start;
+}
+
+static inline void macio_set_drvdata(struct macio_dev *dev, void *data)
+{
+ dev_set_drvdata(&dev->ofdev.dev, data);
+}
+
+static inline void* macio_get_drvdata(struct macio_dev *dev)
+{
+ return dev_get_drvdata(&dev->ofdev.dev);
+}
+
+static inline struct device_node *macio_get_of_node(struct macio_dev *mdev)
+{
+ return mdev->ofdev.dev.of_node;
+}
+
+#ifdef CONFIG_PCI
+static inline struct pci_dev *macio_get_pci_dev(struct macio_dev *mdev)
+{
+ return mdev->bus->pdev;
+}
+#endif
+
+/*
+ * A driver for a mac-io chip based device
+ */
+struct macio_driver
+{
+ int (*probe)(struct macio_dev* dev, const struct of_device_id *match);
+ int (*remove)(struct macio_dev* dev);
+
+ int (*suspend)(struct macio_dev* dev, pm_message_t state);
+ int (*resume)(struct macio_dev* dev);
+ int (*shutdown)(struct macio_dev* dev);
+
+#ifdef CONFIG_PMAC_MEDIABAY
+ void (*mediabay_event)(struct macio_dev* dev, int mb_state);
+#endif
+ struct device_driver driver;
+};
+#define to_macio_driver(drv) container_of(drv,struct macio_driver, driver)
+
+extern int macio_register_driver(struct macio_driver *);
+extern void macio_unregister_driver(struct macio_driver *);
+
+#endif /* __KERNEL__ */
+#endif /* __MACIO_ASIC_H__ */