boards/t1040qds: Adds ethernet support for T1040

Enable entherent for T1040QDS. It enables FM1@DTSEC3, FM1@DTSEC4, FM1@DTSEC5
    Define MDIO related configs
    Added eth.c file
    Update t1040.c to support RGMII and SGMII
    Update t1040qds.c to support ethernet
    Define the PHY address

Signed-off-by: Arpit Goel <B44344@freescale.com>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@freescale.com>
Signed-off-by: Poonam Aggrwal <poonam.aggrwal@freescale.com>
Signed-off-by: Priyanka Jain <Priyanka.Jain@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
[York Sun: remove dash from commit message]
Signed-off-by: York Sun <yorksun@freescale.com>

3 files changed, 494 insertions, 0 deletions

diff --git a/board/freescale/t1040qds/Makefile b/board/freescale/t1040qds/Makefile
index 93af9eb..c7470d7 100644
--- a/board/freescale/t1040qds/Makefile
+++ b/board/freescale/t1040qds/Makefile
@@ -9,3 +9,4 @@ obj-y	+= ddr.o
 obj-$(CONFIG_PCI)     += pci.o
 obj-y	+= law.o
 obj-y	+= tlb.o
+obj-y	+= eth.o
diff --git a/board/freescale/t1040qds/eth.c b/board/freescale/t1040qds/eth.c
new file mode 100644
index 0000000..3077b4a
--- /dev/null
+++ b/board/freescale/t1040qds/eth.c
@@ -0,0 +1,492 @@
+/*
+ * Copyright 2013 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/*
+ * The RGMII PHYs are provided by the two on-board PHY connected to
+ * dTSEC instances 4 and 5. The SGMII PHYs are provided by one on-board
+ * PHY or by the standard four-port SGMII riser card (VSC).
+ */
+
+#include <common.h>
+#include <netdev.h>
+#include <asm/fsl_serdes.h>
+#include <asm/immap_85xx.h>
+#include <fm_eth.h>
+#include <fsl_mdio.h>
+#include <malloc.h>
+#include <asm/fsl_dtsec.h>
+
+#include "../common/fman.h"
+#include "../common/qixis.h"
+
+#include "t1040qds_qixis.h"
+
+#ifdef CONFIG_FMAN_ENET
+ /* - In T1040 there are only 8 SERDES lanes, spread across 2 SERDES banks.
+ *   Bank 1 -> Lanes A, B, C, D
+ *   Bank 2 -> Lanes E, F, G, H
+ */
+
+ /* Mapping of 8 SERDES lanes to T1040 QDS board slots. A value of '0' here
+  * means that the mapping must be determined dynamically, or that the lane
+  * maps to something other than a board slot.
+  */
+static u8 lane_to_slot[] = {
+	0, 0, 0, 0, 0, 0, 0, 0
+};
+
+/* On the Vitesse VSC8234XHG SGMII riser card there are 4 SGMII PHYs
+ * housed.
+ */
+static int riser_phy_addr[] = {
+	CONFIG_SYS_FM1_DTSEC1_RISER_PHY_ADDR,
+	CONFIG_SYS_FM1_DTSEC2_RISER_PHY_ADDR,
+	CONFIG_SYS_FM1_DTSEC3_RISER_PHY_ADDR,
+	CONFIG_SYS_FM1_DTSEC4_RISER_PHY_ADDR,
+};
+
+/* Slot2 does not have EMI connections */
+#define EMI_NONE	0xFFFFFFFF
+#define EMI1_RGMII0	0
+#define EMI1_RGMII1	1
+#define EMI1_SLOT1	2
+#define EMI1_SLOT3	3
+#define EMI1_SLOT4	4
+#define EMI1_SLOT5	5
+#define EMI1_SLOT6	6
+#define EMI1_SLOT7	7
+#define EMI2		8
+
+static int mdio_mux[NUM_FM_PORTS];
+
+static const char * const mdio_names[] = {
+	"T1040_QDS_MDIO0",
+	"T1040_QDS_MDIO1",
+	"T1040_QDS_MDIO2",
+	"T1040_QDS_MDIO3",
+	"T1040_QDS_MDIO4",
+	"T1040_QDS_MDIO5",
+	"T1040_QDS_MDIO6",
+	"T1040_QDS_MDIO7",
+};
+
+struct t1040_qds_mdio {
+	u8 muxval;
+	struct mii_dev *realbus;
+};
+
+static const char *t1040_qds_mdio_name_for_muxval(u8 muxval)
+{
+	return mdio_names[muxval];
+}
+
+struct mii_dev *mii_dev_for_muxval(u8 muxval)
+{
+	struct mii_dev *bus;
+	const char *name = t1040_qds_mdio_name_for_muxval(muxval);
+
+	if (!name) {
+		printf("No bus for muxval %x\n", muxval);
+		return NULL;
+	}
+
+	bus = miiphy_get_dev_by_name(name);
+
+	if (!bus) {
+		printf("No bus by name %s\n", name);
+		return NULL;
+	}
+
+	return bus;
+}
+
+static void t1040_qds_mux_mdio(u8 muxval)
+{
+	u8 brdcfg4;
+	if (muxval <= 7) {
+		brdcfg4 = QIXIS_READ(brdcfg[4]);
+		brdcfg4 &= ~BRDCFG4_EMISEL_MASK;
+		brdcfg4 |= (muxval << BRDCFG4_EMISEL_SHIFT);
+		QIXIS_WRITE(brdcfg[4], brdcfg4);
+	}
+}
+
+static int t1040_qds_mdio_read(struct mii_dev *bus, int addr, int devad,
+				int regnum)
+{
+	struct t1040_qds_mdio *priv = bus->priv;
+
+	t1040_qds_mux_mdio(priv->muxval);
+
+	return priv->realbus->read(priv->realbus, addr, devad, regnum);
+}
+
+static int t1040_qds_mdio_write(struct mii_dev *bus, int addr, int devad,
+				int regnum, u16 value)
+{
+	struct t1040_qds_mdio *priv = bus->priv;
+
+	t1040_qds_mux_mdio(priv->muxval);
+
+	return priv->realbus->write(priv->realbus, addr, devad, regnum, value);
+}
+
+static int t1040_qds_mdio_reset(struct mii_dev *bus)
+{
+	struct t1040_qds_mdio *priv = bus->priv;
+
+	return priv->realbus->reset(priv->realbus);
+}
+
+static int t1040_qds_mdio_init(char *realbusname, u8 muxval)
+{
+	struct t1040_qds_mdio *pmdio;
+	struct mii_dev *bus = mdio_alloc();
+
+	if (!bus) {
+		printf("Failed to allocate t1040_qds MDIO bus\n");
+		return -1;
+	}
+
+	pmdio = malloc(sizeof(*pmdio));
+	if (!pmdio) {
+		printf("Failed to allocate t1040_qds private data\n");
+		free(bus);
+		return -1;
+	}
+
+	bus->read = t1040_qds_mdio_read;
+	bus->write = t1040_qds_mdio_write;
+	bus->reset = t1040_qds_mdio_reset;
+	sprintf(bus->name, t1040_qds_mdio_name_for_muxval(muxval));
+
+	pmdio->realbus = miiphy_get_dev_by_name(realbusname);
+
+	if (!pmdio->realbus) {
+		printf("No bus with name %s\n", realbusname);
+		free(bus);
+		free(pmdio);
+		return -1;
+	}
+
+	pmdio->muxval = muxval;
+	bus->priv = pmdio;
+
+	return mdio_register(bus);
+}
+
+/*
+ * Initialize the lane_to_slot[] array.
+ *
+ * On the T1040QDS board the mapping is controlled by ?? register.
+ */
+static void initialize_lane_to_slot(void)
+{
+	ccsr_gur_t *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
+	int serdes1_prtcl = (in_be32(&gur->rcwsr[4]) &
+				FSL_CORENET2_RCWSR4_SRDS1_PRTCL)
+		>> FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT;
+
+	QIXIS_WRITE(cms[0], 0x07);
+
+	switch (serdes1_prtcl) {
+	case 0x60:
+	case 0x66:
+	case 0x67:
+	case 0x69:
+		lane_to_slot[1] = 7;
+		lane_to_slot[2] = 6;
+		lane_to_slot[3] = 5;
+		break;
+	case 0x86:
+		lane_to_slot[1] = 7;
+		lane_to_slot[2] = 7;
+		lane_to_slot[3] = 7;
+		break;
+	case 0x87:
+		lane_to_slot[1] = 7;
+		lane_to_slot[2] = 7;
+		lane_to_slot[3] = 7;
+		lane_to_slot[7] = 7;
+		break;
+	case 0x89:
+		lane_to_slot[1] = 7;
+		lane_to_slot[2] = 7;
+		lane_to_slot[3] = 7;
+		lane_to_slot[7] = 7;
+		break;
+	case 0x8d:
+		lane_to_slot[1] = 7;
+		lane_to_slot[2] = 7;
+		lane_to_slot[3] = 7;
+		lane_to_slot[5] = 3;
+		lane_to_slot[6] = 3;
+		lane_to_slot[7] = 3;
+		break;
+	case 0x8F:
+	case 0x85:
+		lane_to_slot[1] = 7;
+		lane_to_slot[2] = 6;
+		lane_to_slot[3] = 5;
+		lane_to_slot[6] = 3;
+		lane_to_slot[7] = 3;
+		break;
+	case 0xA5:
+		lane_to_slot[1] = 7;
+		lane_to_slot[6] = 3;
+		lane_to_slot[7] = 3;
+		break;
+	case 0xA7:
+		lane_to_slot[1] = 7;
+		lane_to_slot[7] = 7;
+		break;
+	case 0xAA:
+		lane_to_slot[1] = 7;
+		lane_to_slot[6] = 7;
+		lane_to_slot[7] = 7;
+		break;
+	case 0x40:
+		lane_to_slot[2] = 7;
+		lane_to_slot[3] = 7;
+		break;
+	default:
+		printf("qds: Fman: Unsupported SerDes Protocol 0x%02x\n",
+		       serdes1_prtcl);
+		break;
+	}
+}
+
+/*
+ * Given the following ...
+ *
+ * 1) A pointer to an Fman Ethernet node (as identified by the 'compat'
+ * compatible string and 'addr' physical address)
+ *
+ * 2) An Fman port
+ *
+ * ... update the phy-handle property of the Ethernet node to point to the
+ * right PHY. This assumes that we already know the PHY for each port.
+ *
+ * The offset of the Fman Ethernet node is also passed in for convenience, but
+ * it is not used, and we recalculate the offset anyway.
+ *
+ * Note that what we call "Fman ports" (enum fm_port) is really an Fman MAC.
+ * Inside the Fman, "ports" are things that connect to MACs. We only call them
+ * ports in U-Boot because on previous Ethernet devices (e.g. Gianfar), MACs
+ * and ports are the same thing.
+ *
+ */
+void board_ft_fman_fixup_port(void *fdt, char *compat, phys_addr_t addr,
+			      enum fm_port port, int offset)
+{
+	phy_interface_t intf = fm_info_get_enet_if(port);
+	char phy[16];
+
+	/* The RGMII PHY is identified by the MAC connected to it */
+	if (intf == PHY_INTERFACE_MODE_RGMII) {
+		sprintf(phy, "rgmii_phy%u", port == FM1_DTSEC4 ? 1 : 2);
+		fdt_set_phy_handle(fdt, compat, addr, phy);
+	}
+
+	/* The SGMII PHY is identified by the MAC connected to it */
+	if (intf == PHY_INTERFACE_MODE_SGMII) {
+		int lane = serdes_get_first_lane(FSL_SRDS_1, SGMII_FM1_DTSEC1
+						 + port);
+		u8 slot;
+		if (lane < 0)
+			return;
+		slot = lane_to_slot[lane];
+		if (slot) {
+			/* Slot housing a SGMII riser card */
+			sprintf(phy, "phy_s%x_%02x", slot,
+				(fm_info_get_phy_address(port - FM1_DTSEC1)-
+				CONFIG_SYS_FM1_DTSEC1_RISER_PHY_ADDR + 1));
+			fdt_set_phy_handle(fdt, compat, addr, phy);
+		}
+	}
+}
+
+void fdt_fixup_board_enet(void *fdt)
+{
+	int i, lane, idx;
+
+	for (i = FM1_DTSEC1; i < FM1_DTSEC1 + CONFIG_SYS_NUM_FM1_DTSEC; i++) {
+		idx = i - FM1_DTSEC1;
+		switch (fm_info_get_enet_if(i)) {
+		case PHY_INTERFACE_MODE_SGMII:
+			lane = serdes_get_first_lane(FSL_SRDS_1,
+						     SGMII_FM1_DTSEC1 + idx);
+			if (lane < 0)
+				break;
+
+			switch (mdio_mux[i]) {
+			case EMI1_SLOT3:
+				fdt_status_okay_by_alias(fdt, "emi1_slot3");
+				break;
+			case EMI1_SLOT5:
+				fdt_status_okay_by_alias(fdt, "emi1_slot5");
+				break;
+			case EMI1_SLOT6:
+				fdt_status_okay_by_alias(fdt, "emi1_slot6");
+				break;
+			case EMI1_SLOT7:
+				fdt_status_okay_by_alias(fdt, "emi1_slot7");
+				break;
+			}
+		break;
+		case PHY_INTERFACE_MODE_RGMII:
+			if (i == FM1_DTSEC4)
+				fdt_status_okay_by_alias(fdt, "emi1_rgmii0");
+
+			if (i == FM1_DTSEC5)
+				fdt_status_okay_by_alias(fdt, "emi1_rgmii1");
+			break;
+		default:
+			break;
+		}
+	}
+}
+#endif /* #ifdef CONFIG_FMAN_ENET */
+
+static void set_brdcfg9_for_gtx_clk(void)
+{
+	u8 brdcfg9;
+	brdcfg9 = QIXIS_READ(brdcfg[9]);
+	brdcfg9 |= (1 << 5);
+	QIXIS_WRITE(brdcfg[9], brdcfg9);
+}
+
+void t1040_handle_phy_interface_sgmii(int i)
+{
+	int lane, idx, slot;
+	idx = i - FM1_DTSEC1;
+	lane = serdes_get_first_lane(FSL_SRDS_1,
+			SGMII_FM1_DTSEC1 + idx);
+
+	if (lane < 0)
+		return;
+	slot = lane_to_slot[lane];
+
+	switch (slot) {
+	case 1:
+		mdio_mux[i] = EMI1_SLOT1;
+		fm_info_set_mdio(i, mii_dev_for_muxval(mdio_mux[i]));
+		break;
+	case 3:
+		if (FM1_DTSEC4 == i)
+			fm_info_set_phy_address(i, riser_phy_addr[0]);
+		if (FM1_DTSEC5 == i)
+			fm_info_set_phy_address(i, riser_phy_addr[1]);
+
+		mdio_mux[i] = EMI1_SLOT3;
+
+		fm_info_set_mdio(i, mii_dev_for_muxval(mdio_mux[i]));
+		break;
+	case 4:
+		mdio_mux[i] = EMI1_SLOT4;
+		fm_info_set_mdio(i, mii_dev_for_muxval(mdio_mux[i]));
+		break;
+	case 5:
+		/* Slot housing a SGMII riser card? */
+		fm_info_set_phy_address(i, riser_phy_addr[0]);
+		mdio_mux[i] = EMI1_SLOT5;
+		fm_info_set_mdio(i, mii_dev_for_muxval(mdio_mux[i]));
+		break;
+	case 6:
+		/* Slot housing a SGMII riser card? */
+		fm_info_set_phy_address(i, riser_phy_addr[0]);
+		mdio_mux[i] = EMI1_SLOT6;
+		fm_info_set_mdio(i, mii_dev_for_muxval(mdio_mux[i]));
+		break;
+	case 7:
+		if (FM1_DTSEC1 == i)
+			fm_info_set_phy_address(i, riser_phy_addr[0]);
+		if (FM1_DTSEC2 == i)
+			fm_info_set_phy_address(i, riser_phy_addr[1]);
+		if (FM1_DTSEC3 == i)
+			fm_info_set_phy_address(i, riser_phy_addr[2]);
+
+		mdio_mux[i] = EMI1_SLOT7;
+		fm_info_set_mdio(i, mii_dev_for_muxval(mdio_mux[i]));
+		break;
+	default:
+		break;
+	}
+	fm_info_set_mdio(i, mii_dev_for_muxval(mdio_mux[i]));
+}
+void t1040_handle_phy_interface_rgmii(int i)
+{
+	fm_info_set_phy_address(i, i == FM1_DTSEC5 ?
+			CONFIG_SYS_FM1_DTSEC5_PHY_ADDR :
+			CONFIG_SYS_FM1_DTSEC4_PHY_ADDR);
+	mdio_mux[i] = (i == FM1_DTSEC5) ? EMI1_RGMII1 :
+		EMI1_RGMII0;
+	fm_info_set_mdio(i, mii_dev_for_muxval(mdio_mux[i]));
+}
+
+int board_eth_init(bd_t *bis)
+{
+#ifdef CONFIG_FMAN_ENET
+	struct memac_mdio_info memac_mdio_info;
+	unsigned int i;
+
+	printf("Initializing Fman\n");
+	set_brdcfg9_for_gtx_clk();
+
+	initialize_lane_to_slot();
+
+	/* Initialize the mdio_mux array so we can recognize empty elements */
+	for (i = 0; i < NUM_FM_PORTS; i++)
+		mdio_mux[i] = EMI_NONE;
+
+	memac_mdio_info.regs =
+		(struct memac_mdio_controller *)CONFIG_SYS_FM1_DTSEC_MDIO_ADDR;
+	memac_mdio_info.name = DEFAULT_FM_MDIO_NAME;
+
+	/* Register the real 1G MDIO bus */
+	fm_memac_mdio_init(bis, &memac_mdio_info);
+
+	/* Register the muxing front-ends to the MDIO buses */
+	t1040_qds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_RGMII0);
+	t1040_qds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_RGMII1);
+	t1040_qds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_SLOT1);
+	t1040_qds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_SLOT3);
+	t1040_qds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_SLOT4);
+	t1040_qds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_SLOT5);
+	t1040_qds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_SLOT6);
+	t1040_qds_mdio_init(DEFAULT_FM_MDIO_NAME, EMI1_SLOT7);
+
+	/*
+	 * Program on board RGMII PHY addresses. If the SGMII Riser
+	 * card used, we'll override the PHY address later. For any DTSEC that
+	 * is RGMII, we'll also override its PHY address later. We assume that
+	 * DTSEC4 and DTSEC5 are used for RGMII.
+	 */
+	fm_info_set_phy_address(FM1_DTSEC4, CONFIG_SYS_FM1_DTSEC4_PHY_ADDR);
+	fm_info_set_phy_address(FM1_DTSEC5, CONFIG_SYS_FM1_DTSEC5_PHY_ADDR);
+
+	for (i = FM1_DTSEC1; i < FM1_DTSEC1 + CONFIG_SYS_NUM_FM1_DTSEC; i++) {
+		switch (fm_info_get_enet_if(i)) {
+		case PHY_INTERFACE_MODE_QSGMII:
+			break;
+		case PHY_INTERFACE_MODE_SGMII:
+			t1040_handle_phy_interface_sgmii(i);
+			break;
+
+		case PHY_INTERFACE_MODE_RGMII:
+			/* Only DTSEC4 and DTSEC5 can be routed to RGMII */
+			t1040_handle_phy_interface_rgmii(i);
+			break;
+		default:
+			break;
+		}
+	}
+
+	cpu_eth_init(bis);
+#endif
+
+	return pci_eth_init(bis);
+}
diff --git a/board/freescale/t1040qds/t1040qds.c b/board/freescale/t1040qds/t1040qds.c
index de3ea5c..3dec447 100644
--- a/board/freescale/t1040qds/t1040qds.c
+++ b/board/freescale/t1040qds/t1040qds.c
@@ -223,6 +223,7 @@ void ft_board_setup(void *blob, bd_t *bd)
 
 #ifdef CONFIG_SYS_DPAA_FMAN
 	fdt_fixup_fman_ethernet(blob);
+	fdt_fixup_board_enet(blob);
 #endif
 }