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@@ -1179,6 +1179,48 @@ ulong pci_conv_size_to_32(ulong old, ulong value, uint offset,
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return value;
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}
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+int pci_get_dma_regions(struct udevice *dev, struct pci_region *memp, int index)
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+{
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+ int pci_addr_cells, addr_cells, size_cells;
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+ int cells_per_record;
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+ const u32 *prop;
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+ int len;
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+ int i = 0;
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+
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+ prop = ofnode_get_property(dev_ofnode(dev), "dma-ranges", &len);
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+ if (!prop) {
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+ log_err("PCI: Device '%s': Cannot decode dma-ranges\n",
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+ dev->name);
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+ return -EINVAL;
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+ }
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+
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+ pci_addr_cells = ofnode_read_simple_addr_cells(dev_ofnode(dev));
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+ addr_cells = ofnode_read_simple_addr_cells(dev_ofnode(dev->parent));
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+ size_cells = ofnode_read_simple_size_cells(dev_ofnode(dev));
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+
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+ /* PCI addresses are always 3-cells */
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+ len /= sizeof(u32);
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+ cells_per_record = pci_addr_cells + addr_cells + size_cells;
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+ debug("%s: len=%d, cells_per_record=%d\n", __func__, len,
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+ cells_per_record);
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+
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+ while (len) {
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+ memp->bus_start = fdtdec_get_number(prop + 1, 2);
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+ prop += pci_addr_cells;
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+ memp->phys_start = fdtdec_get_number(prop, addr_cells);
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+ prop += addr_cells;
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+ memp->size = fdtdec_get_number(prop, size_cells);
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+ prop += size_cells;
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+
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+ if (i == index)
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+ return 0;
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+ i++;
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+ len -= cells_per_record;
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+ }
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+
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+ return -EINVAL;
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+}
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+
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int pci_get_regions(struct udevice *dev, struct pci_region **iop,
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struct pci_region **memp, struct pci_region **prefp)
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{
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