diff options
Diffstat (limited to 'sys/dev/i2c')
| -rw-r--r-- | sys/dev/i2c/spdmem.c | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/sys/dev/i2c/spdmem.c b/sys/dev/i2c/spdmem.c index 1870ad74ca4..19197afb0d2 100644 --- a/sys/dev/i2c/spdmem.c +++ b/sys/dev/i2c/spdmem.c @@ -1,4 +1,4 @@ -/* $OpenBSD: spdmem.c,v 1.22 2007/11/26 15:30:53 jsg Exp $ */ +/* $OpenBSD: spdmem.c,v 1.23 2007/11/26 17:40:56 jsg Exp $ */ /* $NetBSD: spdmem.c,v 1.3 2007/09/20 23:09:59 xtraeme Exp $ */ /* @@ -67,6 +67,9 @@ #define SPDMEM_MEMTYPE_DDRSDRAM 0x07 #define SPDMEM_MEMTYPE_DDR2SDRAM 0x08 +#define SPDMEM_MEMTYPE_DIRECT_RAMBUS 0x01 +#define SPDMEM_MEMTYPE_RAMBUS 0x11 + /* possible values for the supply voltage */ #define SPDMEM_VOLTAGE_TTL_5V 0x00 #define SPDMEM_VOLTAGE_TTL_LV 0x01 @@ -125,8 +128,9 @@ #define SPDMEM_SDR_CAS3 (1 << 2) /* Rambus Direct DRAM */ -#define SPDMEM_RDR_ROWS_COLS 0x00 #define SPDMEM_RDR_MODULE_TYPE 0x00 +#define SPDMEM_RDR_ROWS_COLS 0x01 +#define SPDMEM_RDR_BANK 0x02 #define SPDMEM_RDR_TYPE_RIMM 1 #define SPDMEM_RDR_TYPE_SORIMM 2 @@ -335,6 +339,21 @@ spdmem_sdram_decode(struct spdmem_softc *sc, struct spdmem *s) void spdmem_rdr_decode(struct spdmem_softc *sc, struct spdmem *s) { + int rimm_size; + uint8_t row_bits, col_bits, bank_bits; + + row_bits = s->sm_data[SPDMEM_RDR_ROWS_COLS] >> 4; + col_bits = s->sm_data[SPDMEM_RDR_ROWS_COLS] & 0x0f; + bank_bits = s->sm_data[SPDMEM_RDR_BANK] & 0x07; + + /* subtracting 13 here is a cheaper way of dividing by 8k later */ + rimm_size = 1 << (row_bits + col_bits + bank_bits - 13); + + if (rimm_size < 1024) + printf(" %dMB ", rimm_size); + else + printf(" %dGB ", rimm_size / 1024); + switch(s->sm_data[SPDMEM_RDR_MODULE_TYPE]) { case SPDMEM_RDR_TYPE_RIMM: printf("RIMM"); @@ -525,9 +544,12 @@ spdmem_attach(struct device *parent, struct device *self, void *aux) /* * Decode and print SPD contents */ - if (s->sm_len < 4) - spdmem_rdr_decode(sc, s); - else { + if (s->sm_len < 4) { + if (s->sm_type == SPDMEM_MEMTYPE_DIRECT_RAMBUS) + spdmem_rdr_decode(sc, s); + else + printf(" no decode method for Rambus memory"); + } else { switch(s->sm_type) { case SPDMEM_MEMTYPE_EDO: case SPDMEM_MEMTYPE_SDRAM: |