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powerpc/85xx: Rework MPC8536 SERDES is_serdes_configured support

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Move serdes init until after we are in ram so we can keep track of a
global static protocal map for the particular serdes config we are in.
This makes is_serdes_configured() much simplier and not constantly
reading registers to determine if a given device is enabled based on the
protocol.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Kumar Gala
2010-05-22 13:21:39 -05:00
parent c26de2d8b1
commit af0250652a
4 changed files with 40 additions and 40 deletions
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66
arch/powerpc/cpu/mpc85xx/mpc8536_serdes.c
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@ -66,10 +66,11 @@
#define FSL_SRDSCR3_LANEE_SGMII 0x00000000
#define FSL_SRDSCR3_LANEE_SATA 0x00150005
#define SRDS1_MAX_LANES 8
#define SRDS2_MAX_LANES 2
static u32 serdes1_prtcl_map, serdes2_prtcl_map;
static u8 serdes1_cfg_tbl[][SRDS1_MAX_LANES] = {
[0x2] = {PCIE1, PCIE1, PCIE1, PCIE1, NONE, NONE, NONE, NONE},
[0x3] = {PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1, PCIE1},
@ -86,39 +87,12 @@ static u8 serdes2_cfg_tbl[][SRDS2_MAX_LANES] = {
int is_serdes_configured(enum srds_prtcl device)
{
int i;
ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
u32 pordevsr = in_be32(&gur->pordevsr);
u32 srds1_cfg = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
MPC85xx_PORDEVSR_IO_SEL_SHIFT;
int ret = (1 << device) & serdes1_prtcl_map;
u32 srds2_cfg = (pordevsr & MPC85xx_PORDEVSR_SRDS2_IO_SEL) >>
GUTS_PORDEVSR_SERDES2_IO_SEL_SHIFT;
if (ret)
return ret;
debug("%s: dev = %d\n", __FUNCTION__, device);
debug("PORDEVSR[IO_SEL] = %x\n", srds1_cfg);
debug("PORDEVSR[SRDS2_IO_SEL] = %x\n", srds2_cfg);
if (srds1_cfg > ARRAY_SIZE(serdes1_cfg_tbl)) {
printf("Invalid PORDEVSR[IO_SEL] = %d\n", srds1_cfg);
return 0;
}
if (srds2_cfg > ARRAY_SIZE(serdes2_cfg_tbl)) {
printf("Invalid PORDEVSR[SRDS2_IO_SEL] = %d\n", srds2_cfg);
return 0;
}
for (i = 0; i < SRDS1_MAX_LANES; i++) {
if (serdes1_cfg_tbl[srds1_cfg][i] == device)
return 1;
}
for (i = 0; i < SRDS2_MAX_LANES; i++) {
if (serdes2_cfg_tbl[srds2_cfg][i] == device)
return 1;
}
return 0;
return (1 << device) & serdes2_prtcl_map;
}
void fsl_serdes_init(void)
@ -126,13 +100,20 @@ void fsl_serdes_init(void)
void *guts = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
void *sd = (void *)CONFIG_SYS_MPC85xx_SERDES2_ADDR;
u32 pordevsr = in_be32(guts + GUTS_PORDEVSR_OFFS);
u32 srds2_io_sel;
u32 srds1_io_sel, srds2_io_sel;
u32 tmp;
int lane;
srds1_io_sel = (pordevsr & MPC85xx_PORDEVSR_IO_SEL) >>
MPC85xx_PORDEVSR_IO_SEL_SHIFT;
/* parse the SRDS2_IO_SEL of PORDEVSR */
srds2_io_sel = (pordevsr & GUTS_PORDEVSR_SERDES2_IO_SEL)
>> GUTS_PORDEVSR_SERDES2_IO_SEL_SHIFT;
debug("PORDEVSR[SRDS1_IO_SEL] = %x\n", srds1_io_sel);
debug("PORDEVSR[SRDS2_IO_SEL] = %x\n", srds2_io_sel);
switch (srds2_io_sel) {
case 1: /* Lane A - SATA1, Lane E - SATA2 */
/* CR 0 */
@ -246,4 +227,23 @@ void fsl_serdes_init(void)
default:
break;
}
if (srds1_io_sel > ARRAY_SIZE(serdes1_cfg_tbl)) {
printf("Invalid PORDEVSR[SRDS1_IO_SEL] = %d\n", srds1_io_sel);
return;
}
for (lane = 0; lane < SRDS1_MAX_LANES; lane++) {
enum srds_prtcl lane_prtcl = serdes1_cfg_tbl[srds1_io_sel][lane];
serdes1_prtcl_map |= (1 << lane_prtcl);
}
if (srds2_io_sel > ARRAY_SIZE(serdes2_cfg_tbl)) {
printf("Invalid PORDEVSR[SRDS2_IO_SEL] = %d\n", srds2_io_sel);
return;
}
for (lane = 0; lane < SRDS2_MAX_LANES; lane++) {
enum srds_prtcl lane_prtcl = serdes2_cfg_tbl[srds2_io_sel][lane];
serdes2_prtcl_map |= (1 << lane_prtcl);
}
}