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145 lines
3.9 KiB
145 lines
3.9 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __MACIO_ASIC_H__ |
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#define __MACIO_ASIC_H__ |
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#ifdef __KERNEL__ |
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#include <linux/of_device.h> |
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extern struct bus_type macio_bus_type; |
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/* MacIO device driver is defined later */ |
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struct macio_driver; |
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struct macio_chip; |
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#define MACIO_DEV_COUNT_RESOURCES 8 |
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#define MACIO_DEV_COUNT_IRQS 8 |
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/* |
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* the macio_bus structure is used to describe a "virtual" bus |
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* within a MacIO ASIC. It's typically provided by a macio_pci_asic |
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* PCI device, but could be provided differently as well (nubus |
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* machines using a fake OF tree). |
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* |
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* The pdev field can be NULL on non-PCI machines |
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*/ |
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struct macio_bus |
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{ |
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struct macio_chip *chip; /* macio_chip (private use) */ |
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int index; /* macio chip index in system */ |
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#ifdef CONFIG_PCI |
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struct pci_dev *pdev; /* PCI device hosting this bus */ |
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#endif |
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}; |
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/* |
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* the macio_dev structure is used to describe a device |
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* within an Apple MacIO ASIC. |
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*/ |
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struct macio_dev |
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{ |
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struct macio_bus *bus; /* macio bus this device is on */ |
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struct macio_dev *media_bay; /* Device is part of a media bay */ |
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struct platform_device ofdev; |
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struct device_dma_parameters dma_parms; /* ide needs that */ |
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int n_resources; |
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struct resource resource[MACIO_DEV_COUNT_RESOURCES]; |
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int n_interrupts; |
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struct resource interrupt[MACIO_DEV_COUNT_IRQS]; |
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}; |
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#define to_macio_device(d) container_of(d, struct macio_dev, ofdev.dev) |
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#define of_to_macio_device(d) container_of(d, struct macio_dev, ofdev) |
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extern struct macio_dev *macio_dev_get(struct macio_dev *dev); |
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extern void macio_dev_put(struct macio_dev *dev); |
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/* |
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* Accessors to resources & interrupts and other device |
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* fields |
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*/ |
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static inline int macio_resource_count(struct macio_dev *dev) |
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{ |
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return dev->n_resources; |
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} |
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static inline unsigned long macio_resource_start(struct macio_dev *dev, int resource_no) |
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{ |
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return dev->resource[resource_no].start; |
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} |
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static inline unsigned long macio_resource_end(struct macio_dev *dev, int resource_no) |
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{ |
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return dev->resource[resource_no].end; |
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} |
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static inline unsigned long macio_resource_len(struct macio_dev *dev, int resource_no) |
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{ |
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struct resource *res = &dev->resource[resource_no]; |
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if (res->start == 0 || res->end == 0 || res->end < res->start) |
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return 0; |
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return resource_size(res); |
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} |
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extern int macio_enable_devres(struct macio_dev *dev); |
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extern int macio_request_resource(struct macio_dev *dev, int resource_no, const char *name); |
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extern void macio_release_resource(struct macio_dev *dev, int resource_no); |
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extern int macio_request_resources(struct macio_dev *dev, const char *name); |
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extern void macio_release_resources(struct macio_dev *dev); |
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static inline int macio_irq_count(struct macio_dev *dev) |
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{ |
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return dev->n_interrupts; |
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} |
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static inline int macio_irq(struct macio_dev *dev, int irq_no) |
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{ |
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return dev->interrupt[irq_no].start; |
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} |
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static inline void macio_set_drvdata(struct macio_dev *dev, void *data) |
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{ |
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dev_set_drvdata(&dev->ofdev.dev, data); |
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} |
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static inline void* macio_get_drvdata(struct macio_dev *dev) |
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{ |
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return dev_get_drvdata(&dev->ofdev.dev); |
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} |
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static inline struct device_node *macio_get_of_node(struct macio_dev *mdev) |
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{ |
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return mdev->ofdev.dev.of_node; |
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} |
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#ifdef CONFIG_PCI |
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static inline struct pci_dev *macio_get_pci_dev(struct macio_dev *mdev) |
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{ |
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return mdev->bus->pdev; |
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} |
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#endif |
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/* |
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* A driver for a mac-io chip based device |
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*/ |
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struct macio_driver |
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{ |
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int (*probe)(struct macio_dev* dev, const struct of_device_id *match); |
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int (*remove)(struct macio_dev* dev); |
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int (*suspend)(struct macio_dev* dev, pm_message_t state); |
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int (*resume)(struct macio_dev* dev); |
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int (*shutdown)(struct macio_dev* dev); |
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#ifdef CONFIG_PMAC_MEDIABAY |
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void (*mediabay_event)(struct macio_dev* dev, int mb_state); |
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#endif |
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struct device_driver driver; |
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}; |
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#define to_macio_driver(drv) container_of(drv,struct macio_driver, driver) |
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extern int macio_register_driver(struct macio_driver *); |
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extern void macio_unregister_driver(struct macio_driver *); |
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#endif /* __KERNEL__ */ |
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#endif /* __MACIO_ASIC_H__ */
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