diff options
| author | Jonathan Gray <jsg@cvs.openbsd.org> | 2007-10-08 06:20:22 +0000 |
|---|---|---|
| committer | Jonathan Gray <jsg@cvs.openbsd.org> | 2007-10-08 06:20:22 +0000 |
| commit | 99d664dc8b07602793f1e6ce0bd82d6e1ddd5b1b (patch) | |
| tree | daeecaa672e0d61688c4935e00b1833926578205 | |
| parent | 115d741297a95f9b0a43fc0e3ebaee9ddfe4804c (diff) | |
Print registered/CAS latency information for SDRAM.
| -rw-r--r-- | sys/dev/i2c/spdmem.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/sys/dev/i2c/spdmem.c b/sys/dev/i2c/spdmem.c index 778af8b902f..77b39d6df45 100644 --- a/sys/dev/i2c/spdmem.c +++ b/sys/dev/i2c/spdmem.c @@ -1,4 +1,4 @@ -/* $OpenBSD: spdmem.c,v 1.6 2007/10/08 05:39:19 jsg Exp $ */ +/* $OpenBSD: spdmem.c,v 1.7 2007/10/08 06:20:21 jsg Exp $ */ /* $NetBSD: spdmem.c,v 1.3 2007/09/20 23:09:59 xtraeme Exp $ */ /* @@ -97,6 +97,7 @@ #define SPDMEM_SDR_BANKS 0x02 #define SPDMEM_SDR_CYCLE 0x06 #define SPDMEM_SDR_BANKS_PER_CHIP 0x0e +#define SPDMEM_SDR_MOD_ATTRIB 0x12 #define SPDMEM_SDR_SUPERSET 0x1d #define SPDMEM_SDR_FREQUENCY 126 @@ -104,6 +105,8 @@ #define SPDMEM_SDR_FREQ_66 0x66 #define SPDMEM_SDR_FREQ_100 0x64 #define SPDMEM_SDR_FREQ_133 0x85 +#define SPDMEM_SDR_CAS2 (1 << 1) +#define SPDMEM_SDR_CAS3 (1 << 2) /* Dual Data Rate SDRAM */ #define SPDMEM_DDR_ROWS 0x00 @@ -299,7 +302,8 @@ spdmem_attach(struct device *parent, struct device *self, void *aux) printf(" %s", type); strlcpy(sc->sc_type, type, SPDMEM_TYPE_MAXLEN); - if (((s->sm_type == SPDMEM_MEMTYPE_DDRSDRAM) && + if (((s->sm_type == SPDMEM_MEMTYPE_DDRSDRAM || + s->sm_type == SPDMEM_MEMTYPE_SDRAM) && (s->sm_data[SPDMEM_DDR_MOD_ATTRIB] & SPDMEM_DDR_ATTRIB_REG)) || ((s->sm_type == SPDMEM_MEMTYPE_DDR2SDRAM) && (s->sm_data[SPDMEM_DDR2_DIMMTYPE] & SPDMEM_DDR2_TYPE_REGMASK))) @@ -382,7 +386,17 @@ spdmem_attach(struct device *parent, struct device *self, void *aux) printf(" %s%d", ddr_type_string, p_clk); } - if (s->sm_type == SPDMEM_MEMTYPE_DDRSDRAM) { + /* Print CAS latency */ + switch (s->sm_type) { + case SPDMEM_MEMTYPE_SDRAM: + if (s->sm_len < 128) + break; + if (spdmem_read(sc, SPDMEM_SDR_CAS) & SPDMEM_SDR_CAS2) + printf("CL2"); + else if (spdmem_read(sc, SPDMEM_SDR_CAS) & SPDMEM_SDR_CAS3) + printf("CL3"); + break; + case SPDMEM_MEMTYPE_DDRSDRAM: for (i = 6; i >= 0; i--) { if (s->sm_data[SPDMEM_DDR_CAS] & (1 << i)) { cl = ((i * 10) / 2) + 10; @@ -390,13 +404,15 @@ spdmem_attach(struct device *parent, struct device *self, void *aux) break; } } - } else if (s->sm_type == SPDMEM_MEMTYPE_DDR2SDRAM) { + break; + case SPDMEM_MEMTYPE_DDR2SDRAM: for (i = 5; i >= 2; i--) { if (s->sm_data[SPDMEM_DDR_CAS] & (i << i)) { printf("CL%d", i); break; } } + break; } printf("\n"); |