| 1 | |
| 2 | #undef DEBUG
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| 3 |
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| 4 | #include <linux/kernel.h>
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| 5 | #include <linux/string.h>
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| 6 | #include <linux/ioport.h>
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| 7 | #include <linux/etherdevice.h>
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| 8 | #include <linux/of_address.h>
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| 9 | #include <asm/prom.h>
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| 10 |
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| 11 | void of_parse_dma_window(struct device_node *dn, const __be32 *dma_window,
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| 12 | unsigned long *busno, unsigned long *phys,
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| 13 | unsigned long *size)
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| 14 | {
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| 15 | u32 cells;
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| 16 | const __be32 *prop;
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| 17 |
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| 18 |
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| 19 | *busno = of_read_number(dma_window, 1);
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| 20 | dma_window++;
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| 21 |
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| 22 | prop = of_get_property(dn, "ibm,#dma-address-cells", NULL);
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| 23 | if (!prop)
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| 24 | prop = of_get_property(dn, "#address-cells", NULL);
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| 25 |
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| 26 | cells = prop ? of_read_number(prop, 1) : of_n_addr_cells(dn);
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| 27 | *phys = of_read_number(dma_window, cells);
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| 28 |
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| 29 | dma_window += cells;
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| 30 |
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| 31 | prop = of_get_property(dn, "ibm,#dma-size-cells", NULL);
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| 32 | cells = prop ? of_read_number(prop, 1) : of_n_size_cells(dn);
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| 33 | *size = of_read_number(dma_window, cells);
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| 34 | }
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