diff options
Diffstat (limited to 'arch/powerpc/cpu/mpc85xx')
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.c | 40 | ||||
| -rw-r--r-- | arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.h | 2 |
2 files changed, 39 insertions, 3 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.c b/arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.c index f58d6d6..1177247 100644 --- a/arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.c +++ b/arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.c @@ -29,6 +29,7 @@ #include <asm/io.h> #include <asm/processor.h> #include <asm/fsl_law.h> +#include <asm/errno.h> #include "fsl_corenet_serdes.h" static u32 serdes_prtcl_map; @@ -91,7 +92,7 @@ int serdes_get_lane_idx(int lane) return lanes[lane].idx; } -int serdes_get_bank(int lane) +int serdes_get_bank_by_lane(int lane) { return lanes[lane].bank; } @@ -132,6 +133,41 @@ int is_serdes_configured(enum srds_prtcl device) return (1 << device) & serdes_prtcl_map; } +static int __serdes_get_first_lane(uint32_t prtcl, enum srds_prtcl device) +{ + int i; + + for (i = 0; i < SRDS_MAX_LANES; i++) { + if (serdes_get_prtcl(prtcl, i) == device) + return i; + } + + return -ENODEV; +} + +/* + * Returns the SERDES lane (0..SRDS_MAX_LANES-1) that routes to the given + * device. This depends on the current SERDES protocol, as defined in the RCW. + * + * Returns a negative error code if SERDES is disabled or the given device is + * not supported in the current SERDES protocol. + */ +int serdes_get_first_lane(enum srds_prtcl device) +{ + u32 prtcl; + const ccsr_gur_t *gur; + + gur = (typeof(gur))CONFIG_SYS_MPC85xx_GUTS_ADDR; + + /* Is serdes enabled at all? */ + if (unlikely((in_be32(&gur->rcwsr[5]) & 0x2000) == 0)) + return -ENODEV; + + prtcl = (in_be32(&gur->rcwsr[4]) & FSL_CORENET_RCWSR4_SRDS_PRTCL) >> 26; + + return __serdes_get_first_lane(prtcl, device); +} + #ifndef CONFIG_SYS_DCSRBAR_PHYS #define CONFIG_SYS_DCSRBAR_PHYS 0x80000000 /* Must be 1GB-aligned for rev1.0 */ #define CONFIG_SYS_DCSRBAR 0x80000000 @@ -325,7 +361,7 @@ void fsl_serdes_init(void) for (lane = 0; lane < SRDS_MAX_LANES; lane++) { enum srds_prtcl lane_prtcl = serdes_get_prtcl(cfg, lane); if (serdes_lane_enabled(lane)) { - have_bank[serdes_get_bank(lane)] = 1; + have_bank[serdes_get_bank_by_lane(lane)] = 1; serdes_prtcl_map |= (1 << lane_prtcl); } } diff --git a/arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.h b/arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.h index 42d771e..f261351 100644 --- a/arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.h +++ b/arch/powerpc/cpu/mpc85xx/fsl_corenet_serdes.h @@ -33,7 +33,7 @@ enum srds_bank { int is_serdes_prtcl_valid(u32 prtcl); int serdes_get_lane_idx(int lane); -int serdes_get_bank(int lane); +int serdes_get_bank_by_lane(int lane); int serdes_lane_enabled(int lane); enum srds_prtcl serdes_get_prtcl(int cfg, int lane); |