Revert "ACPI / EC: Add query flushing support"
[linux-drm-fsl-dcu.git] / arch / microblaze / kernel / prom_parse.c
1 #undef DEBUG
2
3 #include <linux/export.h>
4 #include <linux/kernel.h>
5 #include <linux/string.h>
6 #include <linux/ioport.h>
7 #include <linux/etherdevice.h>
8 #include <linux/of_address.h>
9 #include <asm/prom.h>
10
11 void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop,
12                 unsigned long *busno, unsigned long *phys, unsigned long *size)
13 {
14         const u32 *dma_window;
15         u32 cells;
16         const unsigned char *prop;
17
18         dma_window = dma_window_prop;
19
20         /* busno is always one cell */
21         *busno = *(dma_window++);
22
23         prop = of_get_property(dn, "ibm,#dma-address-cells", NULL);
24         if (!prop)
25                 prop = of_get_property(dn, "#address-cells", NULL);
26
27         cells = prop ? *(u32 *)prop : of_n_addr_cells(dn);
28         *phys = of_read_number(dma_window, cells);
29
30         dma_window += cells;
31
32         prop = of_get_property(dn, "ibm,#dma-size-cells", NULL);
33         cells = prop ? *(u32 *)prop : of_n_size_cells(dn);
34         *size = of_read_number(dma_window, cells);
35 }