1 /* SPDX-License-Identifier: GPL-2.0 */ 1
2 #ifndef __MACIO_ASIC_H__
3 #define __MACIO_ASIC_H__
4 #ifdef __KERNEL__
5
6 #include <linux/of.h>
7 #include <linux/platform_device.h>
8
9 extern const struct bus_type macio_bus_type;
10
11 /* MacIO device driver is defined later */
12 struct macio_driver;
13 struct macio_chip;
14
15 #define MACIO_DEV_COUNT_RESOURCES 8
16 #define MACIO_DEV_COUNT_IRQS 8
17
18 /*
19 * the macio_bus structure is used to describe
20 * within a MacIO ASIC. It's typically provide
21 * PCI device, but could be provided different
22 * machines using a fake OF tree).
23 *
24 * The pdev field can be NULL on non-PCI machi
25 */
26 struct macio_bus
27 {
28 struct macio_chip *chip;
29 int index;
30 #ifdef CONFIG_PCI
31 struct pci_dev *pdev;
32 #endif
33 };
34
35 /*
36 * the macio_dev structure is used to describe
37 * within an Apple MacIO ASIC.
38 */
39 struct macio_dev
40 {
41 struct macio_bus *bus;
42 struct macio_dev *media_bay;
43 struct platform_device ofdev;
44 struct device_dma_parameters dma_parms
45 int n_resources;
46 struct resource resource[MACIO
47 int n_interrupts;
48 struct resource interrupt[MACI
49 };
50 #define to_macio_device(d) container_of(d, str
51 #define of_to_macio_device(d) container_of(d,
52
53 extern struct macio_dev *macio_dev_get(struct
54 extern void macio_dev_put(struct macio_dev *de
55
56 /*
57 * Accessors to resources & interrupts and oth
58 * fields
59 */
60
61 static inline int macio_resource_count(struct
62 {
63 return dev->n_resources;
64 }
65
66 static inline unsigned long macio_resource_sta
67 {
68 return dev->resource[resource_no].star
69 }
70
71 static inline unsigned long macio_resource_end
72 {
73 return dev->resource[resource_no].end;
74 }
75
76 static inline unsigned long macio_resource_len
77 {
78 struct resource *res = &dev->resource[
79 if (res->start == 0 || res->end == 0 |
80 return 0;
81 return resource_size(res);
82 }
83
84 extern int macio_enable_devres(struct macio_de
85
86 extern int macio_request_resource(struct macio
87 extern void macio_release_resource(struct maci
88 extern int macio_request_resources(struct maci
89 extern void macio_release_resources(struct mac
90
91 static inline int macio_irq_count(struct macio
92 {
93 return dev->n_interrupts;
94 }
95
96 static inline int macio_irq(struct macio_dev *
97 {
98 return dev->interrupt[irq_no].start;
99 }
100
101 static inline void macio_set_drvdata(struct ma
102 {
103 dev_set_drvdata(&dev->ofdev.dev, data)
104 }
105
106 static inline void* macio_get_drvdata(struct m
107 {
108 return dev_get_drvdata(&dev->ofdev.dev
109 }
110
111 static inline struct device_node *macio_get_of
112 {
113 return mdev->ofdev.dev.of_node;
114 }
115
116 #ifdef CONFIG_PCI
117 static inline struct pci_dev *macio_get_pci_de
118 {
119 return mdev->bus->pdev;
120 }
121 #endif
122
123 /*
124 * A driver for a mac-io chip based device
125 */
126 struct macio_driver
127 {
128 int (*probe)(struct macio_dev* dev
129 void (*remove)(struct macio_dev *de
130
131 int (*suspend)(struct macio_dev* d
132 int (*resume)(struct macio_dev* de
133 int (*shutdown)(struct macio_dev*
134
135 #ifdef CONFIG_PMAC_MEDIABAY
136 void (*mediabay_event)(struct macio
137 #endif
138 struct device_driver driver;
139 };
140 #define to_macio_driver(drv) container_of(drv,
141
142 extern int macio_register_driver(struct macio_
143 extern void macio_unregister_driver(struct mac
144
145 #endif /* __KERNEL__ */
146 #endif /* __MACIO_ASIC_H__ */
147
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