@@ -490,7 +490,6 @@ static void ls_pcie_setup_ep(struct ls_pcie *pcie, struct ls_pcie_info *info)
}
}
-
/*
* Return next available LUT index.
*/
@@ -528,6 +527,48 @@ static u32 ls_pcie_next_streamid(void)
return next_stream_id++;
}
+/*
+ * An msi-map is a property to be added to the pci controller
+ * node. It is a table, where each entry consists of 4 fields
+ * e.g.:
+ *
+ * msi-map = <[devid] [phandle-to-msi-ctrl] [stream-id] [count]
+ * [devid] [phandle-to-msi-ctrl] [stream-id] [count]>;
+ */
+static void fdt_pcie_set_msi_map_entry(void *blob, struct ls_pcie *pcie,
+ u32 devid, u32 streamid)
+{
+ char pcie_path[19];
+ u32 *prop;
+ u32 phandle;
+ int nodeoffset;
+
+ /* find pci controller node */
+ snprintf(pcie_path, sizeof(pcie_path), "/soc/pcie@%llx",
+ (u64)pcie->dbi);
+ nodeoffset = fdt_path_offset(blob, pcie_path);
+ if (nodeoffset < 0) {
+ printf("\n%s: ERROR: unable to update PCIe node: %s\n",
+ __func__, pcie_path);
+ return;
+ }
+
+ /* get phandle to MSI controller */
+ prop = (u32 *)fdt_getprop(blob, nodeoffset, "msi-parent", 0);
+ if (prop == NULL) {
+ printf("\n%s: ERROR: missing msi-parent: %s\n", __func__,
+ pcie_path);
+ return;
+ }
+ phandle = be32_to_cpu(*prop);
+
+ /* set one msi-map row */
+ fdt_appendprop_u32(blob, nodeoffset, "msi-map", devid);
+ fdt_appendprop_u32(blob, nodeoffset, "msi-map", phandle);
+ fdt_appendprop_u32(blob, nodeoffset, "msi-map", streamid);
+ fdt_appendprop_u32(blob, nodeoffset, "msi-map", 1);
+}
+
int ls_pcie_init_ctrl(int busno, enum srds_prtcl dev, struct ls_pcie_info *info)
{
struct ls_pcie *pcie;