armv8: Add SerDes framework for Layerscape Architecture

Add support of SerDes framework for Layerscape Architecture.
    - Add support of 2 SerDes block
    - Add SerDes protocol parsing and detection
    - Create table of SerDes protocol supported by LS2085A

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Minghuan Lian <Minghuan.Lian@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>

1 files changed, 117 insertions, 0 deletions

diff --git a/arch/arm/cpu/armv8/fsl-lsch3/ls2085a_serdes.c b/arch/arm/cpu/armv8/fsl-lsch3/ls2085a_serdes.c
new file mode 100644
index 0000000..098745b
--- /dev/null
+++ b/arch/arm/cpu/armv8/fsl-lsch3/ls2085a_serdes.c
@@ -0,0 +1,117 @@
+/*
+ * Copyright 2015 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/fsl_serdes.h>
+#include <asm/arch-fsl-lsch3/immap_lsch3.h>
+
+struct serdes_config {
+	u8 protocol;
+	u8 lanes[SRDS_MAX_LANES];
+};
+
+static struct serdes_config serdes1_cfg_tbl[] = {
+	/* SerDes 1 */
+	{0x03, {PCIE1, PCIE1, PCIE1, PCIE1, PCIE2, PCIE2, PCIE2, PCIE2 } },
+	{0x05, {PCIE2, PCIE2, PCIE2, PCIE2, SGMII4, SGMII3, SGMII2, SGMII1 } },
+	{0x07, {SGMII8, SGMII7, SGMII6, SGMII5, SGMII4, SGMII3, SGMII2,
+		SGMII1 } },
+	{0x09, {SGMII8, SGMII7, SGMII6, SGMII5, SGMII4, SGMII3, SGMII2,
+		SGMII1 } },
+	{0x0A, {SGMII8, SGMII7, SGMII6, SGMII5, SGMII4, SGMII3, SGMII2,
+		SGMII1 } },
+	{0x0C, {SGMII8, SGMII7, SGMII6, SGMII5, SGMII4, SGMII3, SGMII2,
+		SGMII1 } },
+	{0x0E, {SGMII8, SGMII7, SGMII6, SGMII5, SGMII4, SGMII3, SGMII2,
+		SGMII1 } },
+	{0x26, {SGMII8, SGMII7, SGMII6, SGMII5, SGMII4, SGMII3, XFI2, XFI1 } },
+	{0x28, {SGMII8, SGMII7, SGMII6, SGMII5, XFI4, XFI3, XFI2, XFI1 } },
+	{0x2A, {XFI8, XFI7, XFI6, XFI5, XFI4, XFI3, XFI2, XFI1 } },
+	{0x2B, {SGMII8, SGMII7, SGMII6, SGMII5, XAUI1, XAUI1, XAUI1, XAUI1  } },
+	{0x32, {XAUI2, XAUI2, XAUI2, XAUI2, XAUI1, XAUI1, XAUI1, XAUI1  } },
+	{0x33, {PCIE2, PCIE2, PCIE2, PCIE2, QSGMII_D, QSGMII_C, QSGMII_B,
+		QSGMII_A} },
+	{0x35, {QSGMII_D, QSGMII_C, QSGMII_B, PCIE2, XFI4, XFI3, XFI2, XFI1 } },
+		{}
+};
+static struct serdes_config serdes2_cfg_tbl[] = {
+	/* SerDes 2 */
+	{0x07, {SGMII9, SGMII10, SGMII11, SGMII12, SGMII13, SGMII14, SGMII15,
+		SGMII16 } },
+	{0x09, {SGMII9, SGMII10, SGMII11, SGMII12, SGMII13, SGMII14, SGMII15,
+		SGMII16 } },
+	{0x0A, {SGMII9, SGMII10, SGMII11, SGMII12, SGMII13, SGMII14, SGMII15,
+		SGMII16 } },
+	{0x0C, {SGMII9, SGMII10, SGMII11, SGMII12, SGMII13, SGMII14, SGMII15,
+		SGMII16 } },
+	{0x0E, {SGMII9, SGMII10, SGMII11, SGMII12, SGMII13, SGMII14, SGMII15,
+		SGMII16 } },
+	{0x3D, {PCIE3, PCIE3, PCIE3, PCIE3, PCIE3, PCIE3, PCIE3, PCIE3 } },
+	{0x3E, {PCIE3, PCIE3, PCIE3, PCIE3, PCIE3, PCIE3, PCIE3, PCIE3 } },
+	{0x3F, {PCIE3, PCIE3, PCIE3, PCIE3, PCIE4, PCIE4, PCIE4, PCIE4 } },
+	{0x40, {PCIE3, PCIE3, PCIE3, PCIE3, PCIE4, PCIE4, PCIE4, PCIE4 } },
+	{0x41, {PCIE3, PCIE3, PCIE3, PCIE3, PCIE4, PCIE4, SATA1, SATA2 } },
+	{0x42, {PCIE3, PCIE3, PCIE3, PCIE3, PCIE4, PCIE4, SATA1, SATA2 } },
+	{0x43, {PCIE3, PCIE3, PCIE3, PCIE3, NONE, NONE, SATA1, SATA2 } },
+	{0x44, {PCIE3, PCIE3, PCIE3, PCIE3, NONE, NONE, SATA1, SATA2 } },
+	{0x45, {PCIE3, SGMII10, SGMII11, SGMII12, PCIE4, SGMII14, SGMII15,
+		SGMII16 } },
+	{0x47, {SGMII9, SGMII10, SGMII11, SGMII12, PCIE4, PCIE4, PCIE4,
+		PCIE4 } },
+	{0x49, {SGMII9, SGMII10, SGMII11, SGMII12, PCIE4, PCIE4, SATA1,
+		SATA2 } },
+	{0x4A, {SGMII9, SGMII10, SGMII11, SGMII12, PCIE4, PCIE4, SATA1,
+		SATA2 } },
+	{}
+};
+
+static struct serdes_config *serdes_cfg_tbl[] = {
+	serdes1_cfg_tbl,
+	serdes2_cfg_tbl,
+};
+
+enum srds_prtcl serdes_get_prtcl(int serdes, int cfg, int lane)
+{
+	struct serdes_config *ptr;
+
+	if (serdes >= ARRAY_SIZE(serdes_cfg_tbl))
+		return 0;
+
+	ptr = serdes_cfg_tbl[serdes];
+	while (ptr->protocol) {
+		if (ptr->protocol == cfg)
+			return ptr->lanes[lane];
+		ptr++;
+	}
+
+	return 0;
+}
+
+int is_serdes_prtcl_valid(int serdes, u32 prtcl)
+{
+	int i;
+	struct serdes_config *ptr;
+
+	if (serdes >= ARRAY_SIZE(serdes_cfg_tbl))
+		return 0;
+
+	ptr = serdes_cfg_tbl[serdes];
+	while (ptr->protocol) {
+		if (ptr->protocol == prtcl)
+			break;
+		ptr++;
+	}
+
+	if (!ptr->protocol)
+		return 0;
+
+	for (i = 0; i < SRDS_MAX_LANES; i++) {
+		if (ptr->lanes[i] != NONE)
+			return 1;
+	}
+
+	return 0;
+}