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16 .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
30 .Nd activate or deactivate a resource
47 These functions activate or deactivate a previously allocated resource.
53 the PCI bus driver enables memory decoding in a PCI device's command register
54 when activating a memory resource.
62 A pointer to the
65 .Xr bus_alloc_resource 9 .
68 Resources which can be mapped for CPU access by a
69 .Xr bus_space 9
70 tag and handle will create a mapping of the entire resource when activated.
74 .Xr rman_get_bustag 9
76 .Xr rman_get_bushandle 9 .
78 .Xr bus_space 9
81 If the mapping is associated with a virtual address,
83 .Xr rman_get_virtual 9 .
88 .Xr bus_alloc_resource 9 .
89 A driver may use this if it wishes to allocate its own mappings of a resource
91 .Xr bus_map_resource 9 .
93 A wrapper API for
94 .Xr bus_space 9
97 .Xr bus_space 9
100 .Xr bus_space 9
110 These two statements both read a 32-bit register at the start of a
119 .Xr bus_alloc_resource 9 ,
120 .Xr bus_map_resource 9 ,
121 .Xr bus_space 9 ,
122 .Xr device 9 ,
123 .Xr driver 9