Commit | Line | Data |
---|---|---|
d1405b86 BH |
1 | #undef DEBUG |
2 | ||
3 | #include <linux/kernel.h> | |
4 | #include <linux/string.h> | |
d2dd482b | 5 | #include <linux/ioport.h> |
29cfe6f4 | 6 | #include <linux/etherdevice.h> |
1f5bef30 | 7 | #include <linux/of_address.h> |
d1405b86 | 8 | #include <asm/prom.h> |
83efafb3 | 9 | |
2083f681 AB |
10 | void of_parse_dma_window(struct device_node *dn, const __be32 *dma_window, |
11 | unsigned long *busno, unsigned long *phys, | |
12 | unsigned long *size) | |
d4ad66fa | 13 | { |
a7f67bdf | 14 | u32 cells; |
2083f681 | 15 | const __be32 *prop; |
d4ad66fa JK |
16 | |
17 | /* busno is always one cell */ | |
2083f681 AB |
18 | *busno = of_read_number(dma_window, 1); |
19 | dma_window++; | |
d4ad66fa | 20 | |
e2eb6392 | 21 | prop = of_get_property(dn, "ibm,#dma-address-cells", NULL); |
03ac829b | 22 | if (!prop) |
e2eb6392 | 23 | prop = of_get_property(dn, "#address-cells", NULL); |
03ac829b | 24 | |
2083f681 | 25 | cells = prop ? of_read_number(prop, 1) : of_n_addr_cells(dn); |
cc9fd71c | 26 | *phys = of_read_number(dma_window, cells); |
d4ad66fa JK |
27 | |
28 | dma_window += cells; | |
29 | ||
e2eb6392 | 30 | prop = of_get_property(dn, "ibm,#dma-size-cells", NULL); |
2083f681 | 31 | cells = prop ? of_read_number(prop, 1) : of_n_size_cells(dn); |
cc9fd71c BH |
32 | *size = of_read_number(dma_window, cells); |
33 | } |