[U-Boot] [PATCH v3 02/11] arch/powerpc: Fix mapping of Freescale SerDes protocols

[Codrin Ciubotariu <codrin.ciubotariu@freescale.com>]

The number of supported serdes protocols on Freescale SoCs
has increased over time. Until now, an u64 variable have been
initialized on boot with the configured protocols. However,
since this number has increased (enum srds_prtcl has more
than 64 values), 64 bits are no longer sufficient to hold track
of all the configured protocols.
This patch replaces the u64 map values with static arrays.
To keep track of the number of serdes protocols, the
SERDES_PRCTL_COUNT vale has been added at the end of
enum srds_prtcl. This value must always be the last one.

Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@freescale.com>
---

Changes for v2: There is no v1 version of this patch;

Changes for v3:
	- replaced 'int' type of seredesX_prtcl_map[] with 'u8';
	- removed "Change-id" line from comment;

 arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c | 67 ++++++++++++++------------
 arch/powerpc/include/asm/fsl_serdes.h          |  1 +
 2 files changed, 38 insertions(+), 30 deletions(-)

diff --git a/arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c b/arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c
index 5cfae47..c7d9622 100644
--- a/arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c
+++ b/arch/powerpc/cpu/mpc85xx/fsl_corenet2_serdes.c
@@ -15,16 +15,16 @@
 #include "fsl_corenet2_serdes.h"
 
 #ifdef CONFIG_SYS_FSL_SRDS_1
-static u64 serdes1_prtcl_map;
+static u8 serdes1_prtcl_map[SERDES_PRCTL_COUNT];
 #endif
 #ifdef CONFIG_SYS_FSL_SRDS_2
-static u64 serdes2_prtcl_map;
+static u8 serdes2_prtcl_map[SERDES_PRCTL_COUNT];
 #endif
 #ifdef CONFIG_SYS_FSL_SRDS_3
-static u64 serdes3_prtcl_map;
+static u8 serdes3_prtcl_map[SERDES_PRCTL_COUNT];
 #endif
 #ifdef CONFIG_SYS_FSL_SRDS_4
-static u64 serdes4_prtcl_map;
+static u8 serdes4_prtcl_map[SERDES_PRCTL_COUNT];
 #endif
 
 #ifdef DEBUG
@@ -83,19 +83,19 @@ static const char *serdes_prtcl_str[] = {
 
 int is_serdes_configured(enum srds_prtcl device)
 {
-	u64 ret = 0;
+	int ret = 0;
 
 #ifdef CONFIG_SYS_FSL_SRDS_1
-	ret |= (1ULL << device) & serdes1_prtcl_map;
+	ret |= serdes1_prtcl_map[device];
 #endif
 #ifdef CONFIG_SYS_FSL_SRDS_2
-	ret |= (1ULL << device) & serdes2_prtcl_map;
+	ret |= serdes2_prtcl_map[device];
 #endif
 #ifdef CONFIG_SYS_FSL_SRDS_3
-	ret |= (1ULL << device) & serdes3_prtcl_map;
+	ret |= serdes3_prtcl_map[device];
 #endif
 #ifdef CONFIG_SYS_FSL_SRDS_4
-	ret |= (1ULL << device) & serdes4_prtcl_map;
+	ret |= serdes4_prtcl_map[device];
 #endif
 
 	return !!ret;
@@ -171,12 +171,14 @@ int serdes_get_first_lane(u32 sd, enum srds_prtcl device)
 #define BCAP_OVD_MASK		0x10000000
 #define BYP_CAL_MASK		0x02000000
 
-u64 serdes_init(u32 sd, u32 sd_addr, u32 sd_prctl_mask, u32 sd_prctl_shift)
+void serdes_init(u32 sd, u32 sd_addr, u32 sd_prctl_mask, u32 sd_prctl_shift,
+		u8 serdes_prtcl_map[SERDES_PRCTL_COUNT])
 {
 	ccsr_gur_t *gur = (void __iomem *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
-	u64 serdes_prtcl_map = 0;
 	u32 cfg;
 	int lane;
+
+	memset(serdes_prtcl_map, 0, sizeof(serdes_prtcl_map));
 #ifdef CONFIG_SYS_FSL_ERRATUM_A007186
 	struct ccsr_sfp_regs  __iomem *sfp_regs =
 			(struct ccsr_sfp_regs __iomem *)(CONFIG_SYS_SFP_ADDR);
@@ -312,38 +314,43 @@ u64 serdes_init(u32 sd, u32 sd_addr, u32 sd_prctl_mask, u32 sd_prctl_shift)
 
 	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);
+		if (unlikely(lane_prtcl >= SERDES_PRCTL_COUNT))
+			debug("Unknown SerDes lane protocol %d\n", lane_prtcl);
+		else
+			serdes_prtcl_map[lane_prtcl] = 1;
 	}
-
-	return serdes_prtcl_map;
 }
 
 void fsl_serdes_init(void)
 {
 
 #ifdef CONFIG_SYS_FSL_SRDS_1
-	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);
+	serdes_init(FSL_SRDS_1,
+		    CONFIG_SYS_FSL_CORENET_SERDES_ADDR,
+		    FSL_CORENET2_RCWSR4_SRDS1_PRTCL,
+		    FSL_CORENET2_RCWSR4_SRDS1_PRTCL_SHIFT,
+		    serdes1_prtcl_map);
 #endif
 #ifdef CONFIG_SYS_FSL_SRDS_2
-	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);
+	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,
+		    serdes2_prtcl_map);
 #endif
 #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);
+	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,
+		    serdes3_prtcl_map);
 #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);
+	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,
+		    serdes4_prtcl_map);
 #endif
 
 }
diff --git a/arch/powerpc/include/asm/fsl_serdes.h b/arch/powerpc/include/asm/fsl_serdes.h
index 8e0e190..2dd32c2 100644
--- a/arch/powerpc/include/asm/fsl_serdes.h
+++ b/arch/powerpc/include/asm/fsl_serdes.h
@@ -87,6 +87,7 @@ enum srds_prtcl {
 	SGMII_2500_FM2_DTSEC6,
 	SGMII_2500_FM2_DTSEC9,
 	SGMII_2500_FM2_DTSEC10,
+	SERDES_PRCTL_COUNT	/* Keep this item the last one */
 };
 
 enum srds {
-- 
1.7.11.7