Annotation of funnyos/sys/bus.h, Revision 1.4
1.1 init 1: /*
1.4 ! init 2: * $Id: bus.h,v 1.3 2007/10/16 18:31:07 init Exp $
1.1 init 3: */
4: #ifndef _SYS_BUS_H
5: #define _SYS_BUS_H
6:
7: #include <sys/device.h>
8:
9: /*
1.2 init 10: * Each bus (bus driver instance) has its own bus_handle.
11: * Device drivers attached to bus aquire bus_handle to perform all bus i/o.
1.1 init 12: */
1.2 init 13: struct bus_handle {
1.4 ! init 14: struct device *bh_ownerdevp; /* device that owns this handler XXX kill that it is ugly */
1.3 init 15: uint8_t (*bus_read_1)(void *ddp, uint32_t addr);
16: uint16_t (*bus_read_2)(void *ddp, uint32_t addr);
17: uint32_t (*bus_read_4)(void *ddp, uint32_t addr);
18: int (*bus_write_1)(void *ddp, uint32_t addr, uint8_t data);
19: int (*bus_write_2)(void *ddp, uint32_t addr, uint16_t data);
20: int (*bus_write_4)(void *ddp, uint32_t addr, uint32_t data);
1.1 init 21: /* XXX DMA related stuff */
22: };
23:
24: #define bus_read_1(dev, addr) ((struct busops *)dev->dv_devdata)->bus_read_1(dev, addr)
25:
26: #define bus_write_1(dev, addr, data) ((struct busops *)dev->dv_devdata)->bus_write_1(dev, addr, data)
27:
28: #endif /* _SYS_BUS_H */
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