diff options
| author |   jsg <jsg@openbsd.org> | 2007-10-18 23:05:20 +0000 |
|---|---|---|
| committer | jsg <jsg@openbsd.org> | 2007-10-18 23:05:20 +0000 |
| commit | d92729ebcfe92cb74ace3a78023b35c7c9ce50fb (patch) | |
| tree | 1f9cf0c60f10e32fb59ec20864ebd29725976c67 /sys/dev/i2c | |
| parent | additional root devices pci* attaches at (diff) | |
| download | wireguard-openbsd-d92729ebcfe92cb74ace3a78023b35c7c9ce50fb.tar.xz wireguard-openbsd-d92729ebcfe92cb74ace3a78023b35c7c9ce50fb.zip | |
Correct tenths of a nanosecond cycle encodings for DDR2,
this makes the PC2-xxxx values show properly in all cases.
From giovanni <qgiovanni@gmail.com>
tested/ok cnst@ ok deraadt@
Diffstat (limited to 'sys/dev/i2c')
| -rw-r--r-- | sys/dev/i2c/spdmem.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/sys/dev/i2c/spdmem.c b/sys/dev/i2c/spdmem.c index bd85651a4fa..1a459b58646 100644 --- a/sys/dev/i2c/spdmem.c +++ b/sys/dev/i2c/spdmem.c @@ -1,4 +1,4 @@ -/* $OpenBSD: spdmem.c,v 1.15 2007/10/17 02:35:25 deraadt Exp $ */ +/* $OpenBSD: spdmem.c,v 1.16 2007/10/18 23:05:20 jsg Exp $ */ /* $NetBSD: spdmem.c,v 1.3 2007/09/20 23:09:59 xtraeme Exp $ */ /* @@ -135,6 +135,10 @@ #define SPDMEM_DDR2_TYPE_REGMASK ((1 << 4) | (1 << 0)) +static const uint8_t ddr2_cycle_tenths[] = { + 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 25, 33, 66, 75, 0 +}; + /* Direct Rambus DRAM */ #define SPDMEM_RDR_ROWS_COLS 0x00 @@ -327,8 +331,8 @@ spdmem_attach(struct device *parent, struct device *self, void *aux) cycle_time = (s->sm_data[SPDMEM_DDR_CYCLE] >> 4) * 100 + (s->sm_data[SPDMEM_DDR_CYCLE] & 0x0f) * 10; else if (s->sm_type == SPDMEM_MEMTYPE_DDR2SDRAM) { - cycle_time = (s->sm_data[SPDMEM_DDR_CYCLE] >> 4) * 100 + - (s->sm_data[SPDMEM_DDR_CYCLE] & 0x0f); + cycle_time = (s->sm_data[SPDMEM_DDR2_CYCLE] >> 4) * 100 + + ddr2_cycle_tenths[(s->sm_data[SPDMEM_DDR2_CYCLE] & 0x0f)]; } if (cycle_time != 0) { |