10  * NPE			0 (NPE-A)	1 (NPE-B)	2 (NPE-C)
17  * bits 0 -> 1	- NPE ID (RX and TX-done)
38 #include <linux/soc/ixp4xx/npe.h>
105 #define CORE_MDC_EN		0x10 /* MDIO using NPE-B ETH-0 only */
114 /* NPE message codes */
173 	struct npe *npe;  member
187 /* NPE message structure */
891 	/* NPE firmware pads short frames with zeros internally */  in eth_xmit()
1177 	struct npe *npe = port->npe;  in eth_open()  local
1181 	if (!npe_running(npe)) {  in eth_open()
1182 		err = npe_load_firmware(npe, npe_name(npe), &dev->dev);  in eth_open()
1186 		if (npe_recv_message(npe, &msg, "ETH_GET_STATUS")) {  in eth_open()
1187 			netdev_err(dev, "%s not responding\n", npe_name(npe));  in eth_open()
1203 		if (npe_send_recv_message(port->npe, &msg, "ETH_SET_RXQ"))  in eth_open()
1215 	if (npe_send_recv_message(port->npe, &msg, "ETH_SET_MAC"))  in eth_open()
1221 	if (npe_send_recv_message(port->npe, &msg, "ETH_SET_FIREWALL_MODE"))  in eth_open()
1298 	if (npe_send_recv_message(port->npe, &msg, "ETH_ENABLE_LOOPBACK"))  in eth_close()
1324 			    " left in NPE\n", buffs);  in eth_close()
1344 			    "left in NPE\n", buffs);  in eth_close()
1351 	if (npe_send_recv_message(port->npe, &msg, "ETH_DISABLE_LOOPBACK"))  in eth_close()
1387 	ret = of_parse_phandle_with_fixed_args(np, "intel,npe-handle", 1, 0,  in ixp4xx_of_get_platdata()
1390 		dev_err(dev, "no NPE engine specified\n");  in ixp4xx_of_get_platdata()
1393 	/* NPE ID 0x00, 0x10, 0x20... */  in ixp4xx_of_get_platdata()
1394 	plat->npe = (npe_spec.args[0] << 4);  in ixp4xx_of_get_platdata()
1449 		plat->npe = pdev->id;  in ixp4xx_eth_probe()
1450 		switch (plat->npe) {  in ixp4xx_eth_probe()
1455 			/* On all except IXP43x, NPE-B is used for the MDIO bus.  in ixp4xx_eth_probe()
1456 			 * If there is no NPE-B in the feature set, bail out,  in ixp4xx_eth_probe()
1463 				/* Else register the MDIO bus on NPE-B */  in ixp4xx_eth_probe()
1468 			/* IXP43x lacks NPE-B and uses NPE-C for the MDIO bus  in ixp4xx_eth_probe()
1469 			 * access, if there is no NPE-C, no bus, nothing works,  in ixp4xx_eth_probe()
1476 				/* Else register the MDIO bus on NPE-B */  in ixp4xx_eth_probe()
1491 	port->id = plat->npe;  in ixp4xx_eth_probe()
1522 	if (!(port->npe = npe_request(NPE_ID(port->id))))  in ixp4xx_eth_probe()
1564 		    npe_name(port->npe));  in ixp4xx_eth_probe()
1572 	npe_release(port->npe);  in ixp4xx_eth_probe()
1586 	npe_release(port->npe);  in ixp4xx_eth_remove()