]>
Commit | Line | Data |
---|---|---|
d1405b86 BH |
1 | #undef DEBUG |
2 | ||
3 | #include <linux/kernel.h> | |
4 | #include <linux/string.h> | |
d1405b86 | 5 | #include <linux/module.h> |
d2dd482b | 6 | #include <linux/ioport.h> |
29cfe6f4 | 7 | #include <linux/etherdevice.h> |
1f5bef30 | 8 | #include <linux/of_address.h> |
d1405b86 | 9 | #include <asm/prom.h> |
83efafb3 | 10 | |
a7f67bdf | 11 | void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop, |
d4ad66fa JK |
12 | unsigned long *busno, unsigned long *phys, unsigned long *size) |
13 | { | |
a7f67bdf JK |
14 | const u32 *dma_window; |
15 | u32 cells; | |
16 | const unsigned char *prop; | |
d4ad66fa | 17 | |
a7f67bdf | 18 | dma_window = dma_window_prop; |
d4ad66fa JK |
19 | |
20 | /* busno is always one cell */ | |
21 | *busno = *(dma_window++); | |
22 | ||
e2eb6392 | 23 | prop = of_get_property(dn, "ibm,#dma-address-cells", NULL); |
03ac829b | 24 | if (!prop) |
e2eb6392 | 25 | prop = of_get_property(dn, "#address-cells", NULL); |
03ac829b | 26 | |
a8bda5dd | 27 | cells = prop ? *(u32 *)prop : of_n_addr_cells(dn); |
cc9fd71c | 28 | *phys = of_read_number(dma_window, cells); |
d4ad66fa JK |
29 | |
30 | dma_window += cells; | |
31 | ||
e2eb6392 | 32 | prop = of_get_property(dn, "ibm,#dma-size-cells", NULL); |
9213feea | 33 | cells = prop ? *(u32 *)prop : of_n_size_cells(dn); |
cc9fd71c BH |
34 | *size = of_read_number(dma_window, cells); |
35 | } |