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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | #ifndef __MACIO_ASIC_H__ |
3 | #define __MACIO_ASIC_H__ | |
88ced031 | 4 | #ifdef __KERNEL__ |
1da177e4 | 5 | |
4b1d99b3 | 6 | #include <linux/of_device.h> |
1da177e4 LT |
7 | |
8 | extern struct bus_type macio_bus_type; | |
9 | ||
10 | /* MacIO device driver is defined later */ | |
11 | struct macio_driver; | |
12 | struct macio_chip; | |
13 | ||
14 | #define MACIO_DEV_COUNT_RESOURCES 8 | |
15 | #define MACIO_DEV_COUNT_IRQS 8 | |
16 | ||
17 | /* | |
18 | * the macio_bus structure is used to describe a "virtual" bus | |
19 | * within a MacIO ASIC. It's typically provided by a macio_pci_asic | |
20 | * PCI device, but could be provided differently as well (nubus | |
21 | * machines using a fake OF tree). | |
22 | * | |
23 | * The pdev field can be NULL on non-PCI machines | |
24 | */ | |
25 | struct macio_bus | |
26 | { | |
27 | struct macio_chip *chip; /* macio_chip (private use) */ | |
28 | int index; /* macio chip index in system */ | |
29 | #ifdef CONFIG_PCI | |
30 | struct pci_dev *pdev; /* PCI device hosting this bus */ | |
31 | #endif | |
32 | }; | |
33 | ||
34 | /* | |
35 | * the macio_dev structure is used to describe a device | |
36 | * within an Apple MacIO ASIC. | |
37 | */ | |
38 | struct macio_dev | |
39 | { | |
40 | struct macio_bus *bus; /* macio bus this device is on */ | |
41 | struct macio_dev *media_bay; /* Device is part of a media bay */ | |
94a0cb1f | 42 | struct platform_device ofdev; |
128b4a0e | 43 | struct device_dma_parameters dma_parms; /* ide needs that */ |
1da177e4 LT |
44 | int n_resources; |
45 | struct resource resource[MACIO_DEV_COUNT_RESOURCES]; | |
46 | int n_interrupts; | |
47 | struct resource interrupt[MACIO_DEV_COUNT_IRQS]; | |
48 | }; | |
49 | #define to_macio_device(d) container_of(d, struct macio_dev, ofdev.dev) | |
50 | #define of_to_macio_device(d) container_of(d, struct macio_dev, ofdev) | |
51 | ||
52 | extern struct macio_dev *macio_dev_get(struct macio_dev *dev); | |
53 | extern void macio_dev_put(struct macio_dev *dev); | |
54 | ||
55 | /* | |
56 | * Accessors to resources & interrupts and other device | |
57 | * fields | |
58 | */ | |
59 | ||
60 | static inline int macio_resource_count(struct macio_dev *dev) | |
61 | { | |
62 | return dev->n_resources; | |
63 | } | |
64 | ||
65 | static inline unsigned long macio_resource_start(struct macio_dev *dev, int resource_no) | |
66 | { | |
67 | return dev->resource[resource_no].start; | |
68 | } | |
69 | ||
70 | static inline unsigned long macio_resource_end(struct macio_dev *dev, int resource_no) | |
71 | { | |
72 | return dev->resource[resource_no].end; | |
73 | } | |
74 | ||
75 | static inline unsigned long macio_resource_len(struct macio_dev *dev, int resource_no) | |
76 | { | |
77 | struct resource *res = &dev->resource[resource_no]; | |
78 | if (res->start == 0 || res->end == 0 || res->end < res->start) | |
79 | return 0; | |
28f65c11 | 80 | return resource_size(res); |
1da177e4 LT |
81 | } |
82 | ||
7fb19ea0 BH |
83 | extern int macio_enable_devres(struct macio_dev *dev); |
84 | ||
1da177e4 LT |
85 | extern int macio_request_resource(struct macio_dev *dev, int resource_no, const char *name); |
86 | extern void macio_release_resource(struct macio_dev *dev, int resource_no); | |
87 | extern int macio_request_resources(struct macio_dev *dev, const char *name); | |
88 | extern void macio_release_resources(struct macio_dev *dev); | |
89 | ||
90 | static inline int macio_irq_count(struct macio_dev *dev) | |
91 | { | |
92 | return dev->n_interrupts; | |
93 | } | |
94 | ||
95 | static inline int macio_irq(struct macio_dev *dev, int irq_no) | |
96 | { | |
97 | return dev->interrupt[irq_no].start; | |
98 | } | |
99 | ||
100 | static inline void macio_set_drvdata(struct macio_dev *dev, void *data) | |
101 | { | |
102 | dev_set_drvdata(&dev->ofdev.dev, data); | |
103 | } | |
104 | ||
105 | static inline void* macio_get_drvdata(struct macio_dev *dev) | |
106 | { | |
107 | return dev_get_drvdata(&dev->ofdev.dev); | |
108 | } | |
109 | ||
110 | static inline struct device_node *macio_get_of_node(struct macio_dev *mdev) | |
111 | { | |
61c7a080 | 112 | return mdev->ofdev.dev.of_node; |
1da177e4 LT |
113 | } |
114 | ||
115 | #ifdef CONFIG_PCI | |
116 | static inline struct pci_dev *macio_get_pci_dev(struct macio_dev *mdev) | |
117 | { | |
118 | return mdev->bus->pdev; | |
119 | } | |
120 | #endif | |
121 | ||
122 | /* | |
123 | * A driver for a mac-io chip based device | |
124 | */ | |
125 | struct macio_driver | |
126 | { | |
5e655772 | 127 | int (*probe)(struct macio_dev* dev, const struct of_device_id *match); |
1da177e4 LT |
128 | int (*remove)(struct macio_dev* dev); |
129 | ||
b1c42851 | 130 | int (*suspend)(struct macio_dev* dev, pm_message_t state); |
1da177e4 LT |
131 | int (*resume)(struct macio_dev* dev); |
132 | int (*shutdown)(struct macio_dev* dev); | |
133 | ||
d58b0c39 BH |
134 | #ifdef CONFIG_PMAC_MEDIABAY |
135 | void (*mediabay_event)(struct macio_dev* dev, int mb_state); | |
136 | #endif | |
1da177e4 LT |
137 | struct device_driver driver; |
138 | }; | |
139 | #define to_macio_driver(drv) container_of(drv,struct macio_driver, driver) | |
140 | ||
141 | extern int macio_register_driver(struct macio_driver *); | |
142 | extern void macio_unregister_driver(struct macio_driver *); | |
143 | ||
88ced031 | 144 | #endif /* __KERNEL__ */ |
1da177e4 | 145 | #endif /* __MACIO_ASIC_H__ */ |