Linux kernel mirror (for testing)
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1/* $Id: ebus.h,v 1.10 2001/03/14 05:00:55 davem Exp $
2 * ebus.h: PCI to Ebus pseudo driver software state.
3 *
4 * Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
5 * Copyright (C) 1999 David S. Miller (davem@redhat.com)
6 */
7
8#ifndef __SPARC64_EBUS_H
9#define __SPARC64_EBUS_H
10
11#include <asm/pbm.h>
12#include <asm/oplib.h>
13#include <asm/prom.h>
14#include <asm/of_device.h>
15
16struct linux_ebus_child {
17 struct linux_ebus_child *next;
18 struct linux_ebus_device *parent;
19 struct linux_ebus *bus;
20 struct device_node *prom_node;
21 struct resource resource[PROMREG_MAX];
22 int num_addrs;
23 unsigned int irqs[PROMINTR_MAX];
24 int num_irqs;
25};
26
27struct linux_ebus_device {
28 struct of_device ofdev;
29 struct linux_ebus_device *next;
30 struct linux_ebus_child *children;
31 struct linux_ebus *bus;
32 struct device_node *prom_node;
33 struct resource resource[PROMREG_MAX];
34 int num_addrs;
35 unsigned int irqs[PROMINTR_MAX];
36 int num_irqs;
37};
38#define to_ebus_device(d) container_of(d, struct linux_ebus_device, ofdev.dev)
39
40struct linux_ebus {
41 struct of_device ofdev;
42 struct linux_ebus *next;
43 struct linux_ebus_device *devices;
44 struct pci_pbm_info *parent;
45 struct pci_dev *self;
46 int index;
47 int is_rio;
48 struct device_node *prom_node;
49};
50#define to_ebus(d) container_of(d, struct linux_ebus, ofdev.dev)
51
52struct ebus_dma_info {
53 spinlock_t lock;
54 void __iomem *regs;
55
56 unsigned int flags;
57#define EBUS_DMA_FLAG_USE_EBDMA_HANDLER 0x00000001
58#define EBUS_DMA_FLAG_TCI_DISABLE 0x00000002
59
60 /* These are only valid is EBUS_DMA_FLAG_USE_EBDMA_HANDLER is
61 * set.
62 */
63 void (*callback)(struct ebus_dma_info *p, int event, void *cookie);
64 void *client_cookie;
65 unsigned int irq;
66#define EBUS_DMA_EVENT_ERROR 1
67#define EBUS_DMA_EVENT_DMA 2
68#define EBUS_DMA_EVENT_DEVICE 4
69
70 unsigned char name[64];
71};
72
73extern int ebus_dma_register(struct ebus_dma_info *p);
74extern int ebus_dma_irq_enable(struct ebus_dma_info *p, int on);
75extern void ebus_dma_unregister(struct ebus_dma_info *p);
76extern int ebus_dma_request(struct ebus_dma_info *p, dma_addr_t bus_addr,
77 size_t len);
78extern void ebus_dma_prepare(struct ebus_dma_info *p, int write);
79extern unsigned int ebus_dma_residue(struct ebus_dma_info *p);
80extern unsigned int ebus_dma_addr(struct ebus_dma_info *p);
81extern void ebus_dma_enable(struct ebus_dma_info *p, int on);
82
83extern struct linux_ebus *ebus_chain;
84
85extern void ebus_init(void);
86
87#define for_each_ebus(bus) \
88 for((bus) = ebus_chain; (bus); (bus) = (bus)->next)
89
90#define for_each_ebusdev(dev, bus) \
91 for((dev) = (bus)->devices; (dev); (dev) = (dev)->next)
92
93#define for_each_edevchild(dev, child) \
94 for((child) = (dev)->children; (child); (child) = (child)->next)
95
96#endif /* !(__SPARC64_EBUS_H) */