powerpc/corenet2: Add SerDes for corenet2

Create new files to handle 2nd generation Chassis as the registers are
organized differently.

 - Add SerDes protocol parsing and detection
 - Add support of 4 SerDes
 - Add CPRI protocol in fsl_serdes.h
	The Common Public Radio Interface (CPRI) is publicly available
	specification that standardizes the protocol interface between the
	radio equipment control (REC) and the radio equipment (RE) in wireless
	basestations. This allows interoperability of equipment from different
	vendors,and preserves the software investment made by wireless service
	providers.

Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>

1 files changed, 203 insertions, 0 deletions

diff --git a/arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c b/arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c
new file mode 100644
index 0000000000..01dcdf6bc1
--- /dev/null
+++ b/arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c
@@ -0,0 +1,203 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/fsl_serdes.h>
+#include <asm/immap_85xx.h>
+#include <asm/io.h>
+#include <asm/processor.h>
+#include <asm/fsl_law.h>
+#include <asm/errno.h>
+#include "fsl_corenet2_serdes.h"
+
+static u64 serdes1_prtcl_map;
+static u64 serdes2_prtcl_map;
+#ifdef CONFIG_SYS_FSL_SRDS_3
+static u64 serdes3_prtcl_map;
+#endif
+#ifdef CONFIG_SYS_FSL_SRDS_4
+static u64 serdes4_prtcl_map;
+#endif
+
+#ifdef DEBUG
+static const char *serdes_prtcl_str[] = {
+	[NONE] = "NA",
+	[PCIE1] = "PCIE1",
+	[PCIE2] = "PCIE2",
+	[PCIE3] = "PCIE3",
+	[PCIE4] = "PCIE4",
+	[SATA1] = "SATA1",
+	[SATA2] = "SATA2",
+	[SRIO1] = "SRIO1",
+	[SRIO2] = "SRIO2",
+	[SGMII_FM1_DTSEC1] = "SGMII_FM1_DTSEC1",
+	[SGMII_FM1_DTSEC2] = "SGMII_FM1_DTSEC2",
+	[SGMII_FM1_DTSEC3] = "SGMII_FM1_DTSEC3",
+	[SGMII_FM1_DTSEC4] = "SGMII_FM1_DTSEC4",
+	[SGMII_FM1_DTSEC5] = "SGMII_FM1_DTSEC5",
+	[SGMII_FM1_DTSEC6] = "SGMII_FM1_DTSEC6",
+	[SGMII_FM2_DTSEC1] = "SGMII_FM2_DTSEC1",
+	[SGMII_FM2_DTSEC2] = "SGMII_FM2_DTSEC2",
+	[SGMII_FM2_DTSEC3] = "SGMII_FM2_DTSEC3",
+	[SGMII_FM2_DTSEC4] = "SGMII_FM2_DTSEC4",
+	[XAUI_FM1] = "XAUI_FM1",
+	[XAUI_FM2] = "XAUI_FM2",
+	[AURORA] = "DEBUG",
+	[CPRI1] = "CPRI1",
+	[CPRI2] = "CPRI2",
+	[CPRI3] = "CPRI3",
+	[CPRI4] = "CPRI4",
+	[CPRI5] = "CPRI5",
+	[CPRI6] = "CPRI6",
+	[CPRI7] = "CPRI7",
+	[CPRI8] = "CPRI8",
+	[XAUI_FM1_MAC9] = "XAUI_FM1_MAC9",
+	[XAUI_FM1_MAC10] = "XAUI_FM1_MAC10",
+	[XAUI_FM2_MAC9] = "XAUI_FM2_MAC9",
+	[XAUI_FM2_MAC10] = "XAUI_FM2_MAC10",
+	[HIGIG_FM1_MAC9] = "HiGig_FM1_MAC9",
+	[HIGIG_FM1_MAC10] = "HiGig_FM1_MAC10",
+	[HIGIG_FM2_MAC9] = "HiGig_FM2_MAC9",
+	[HIGIG_FM2_MAC10] = "HiGig_FM2_MAC10",
+	[QSGMII_FM1_A] = "QSGMII_FM1_A",
+	[QSGMII_FM1_B] = "QSGMII_FM1_B",
+	[QSGMII_FM2_A] = "QSGMII_FM2_A",
+	[QSGMII_FM2_B] = "QSGMII_FM2_B",
+	[XFI_FM1_MAC9] = "XFI_FM1_MAC9",
+	[XFI_FM1_MAC10] = "XFI_FM1_MAC10",
+	[XFI_FM2_MAC9] = "XFI_FM2_MAC9",
+	[XFI_FM2_MAC10] = "XFI_FM2_MAC10",
+	[INTERLAKEN] = "INTERLAKEN",
+};
+#endif
+
+int is_serdes_configured(enum srds_prtcl device)
+{
+	u64 ret = 0;
+
+	ret |= (1ULL << device) & serdes1_prtcl_map;
+	ret |= (1ULL << device) & serdes2_prtcl_map;
+#ifdef CONFIG_SYS_FSL_SRDS_3
+	ret |= (1ULL << device) & serdes3_prtcl_map;
+#endif
+#ifdef CONFIG_SYS_FSL_SRDS_4
+	ret |= (1ULL << device) & serdes4_prtcl_map;
+#endif
+
+	return !!ret;
+}
+
+int serdes_get_first_lane(u32 sd, enum srds_prtcl device)
+{
+	const ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+	u32 cfg = in_be32(&gur->rcwsr[4]);
+	int i;
+
+	switch (sd) {
+	case FSL_SRDS_1:
+		cfg &= FSL_CORENET2_RCWSR4_SRDS1_PRTCL;
+		cfg >>= FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT;
+		break;
+	case FSL_SRDS_2:
+		cfg &= FSL_CORENET2_RCWSR4_SRDS2_PRTCL;
+		cfg >>= FSL_CORENET2_RCWSR4_SRDS2_PRTCL_SHIFT;
+		break;
+#ifdef CONFIG_SYS_FSL_SRDS_3
+	case FSL_SRDS_3:
+		cfg &= FSL_CORENET2_RCWSR4_SRDS3_PRTCL;
+		cfg >>= FSL_CORENET2_RCWSR4_SRDS3_PRTCL_SHIFT;
+		break;
+#endif
+#ifdef CONFIG_SYS_FSL_SRDS_4
+	case FSL_SRDS_4:
+		cfg &= FSL_CORENET2_RCWSR4_SRDS4_PRTCL;
+		cfg >>= FSL_CORENET2_RCWSR4_SRDS4_PRTCL_SHIFT;
+		break;
+#endif
+	default:
+		printf("invalid SerDes%d\n", sd);
+		break;
+	}
+	/* Is serdes enabled at all? */
+	if (unlikely(cfg == 0))
+		return -ENODEV;
+
+	for (i = 0; i < SRDS_MAX_LANES; i++) {
+		if (serdes_get_prtcl(sd, cfg, i) == device)
+			return i;
+	}
+
+	return -ENODEV;
+}
+
+u64 serdes_init(u32 sd, u32 sd_addr, u32 sd_prctl_mask, u32 sd_prctl_shift)
+{
+	ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+	u64 serdes_prtcl_map = 0;
+	u32 cfg;
+	int lane;
+
+	cfg = in_be32(&gur->rcwsr[4]) & sd_prctl_mask;
+	/* Is serdes enabled at all? */
+	if (!cfg) {
+		printf("SERDES%d is not enabled\n", sd + 1);
+		return 0;
+	}
+
+	cfg >>= sd_prctl_shift;
+	printf("Using SERDES%d Protocol: 0x%x\n", sd + 1, cfg);
+	if (!is_serdes_prtcl_valid(sd, cfg))
+		printf("SERDES%d[PRTCL] = 0x%x is not valid\n", sd + 1, cfg);
+
+	for (lane = 0; lane < SRDS_MAX_LANES; lane++) {
+		enum srds_prtcl lane_prtcl = serdes_get_prtcl(sd, cfg, lane);
+		serdes_prtcl_map |= (1ULL << lane_prtcl);
+	}
+
+	return serdes_prtcl_map;
+}
+
+void fsl_serdes_init(void)
+{
+
+	serdes1_prtcl_map = serdes_init(FSL_SRDS_1,
+		CONFIG_SYS_FSL_CORENET_SERDES_ADDR,
+		FSL_CORENET2_RCWSR4_SRDS1_PRTCL,
+		FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT);
+	serdes2_prtcl_map = serdes_init(FSL_SRDS_2,
+		CONFIG_SYS_FSL_CORENET_SERDES_ADDR + FSL_SRDS_2 * 0x1000,
+		FSL_CORENET2_RCWSR4_SRDS2_PRTCL,
+		FSL_CORENET2_RCWSR4_SRDS2_PRTCL_SHIFT);
+#ifdef CONFIG_SYS_FSL_SRDS_3
+	serdes3_prtcl_map = serdes_init(FSL_SRDS_3,
+		CONFIG_SYS_FSL_CORENET_SERDES_ADDR + FSL_SRDS_3 * 0x1000,
+		FSL_CORENET2_RCWSR4_SRDS3_PRTCL,
+		FSL_CORENET2_RCWSR4_SRDS3_PRTCL_SHIFT);
+#endif
+#ifdef CONFIG_SYS_FSL_SRDS_4
+	serdes4_prtcl_map = serdes_init(FSL_SRDS_4,
+		CONFIG_SYS_FSL_CORENET_SERDES_ADDR + FSL_SRDS_4 * 0x1000,
+		FSL_CORENET2_RCWSR4_SRDS4_PRTCL,
+		FSL_CORENET2_RCWSR4_SRDS4_PRTCL_SHIFT);
+#endif
+
+}