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| author | Borislav Petkov <borislav.petkov@amd.com> | 2010-11-24 19:52:09 +0100 |
|---|---|---|
| committer | Borislav Petkov <borislav.petkov@amd.com> | 2011-01-07 11:38:31 +0100 |
| commit | 390944439f746824faec51b576f50cb5ef18745b (patch) | |
| tree | 5fd15e75e8e5e5d3dc1e176c655829f9d0f83aa9 /drivers/edac/amd64_edac.c | |
| parent | 360b7f3c602ed80ce8c6b2585dcb76883a440c17 (diff) | |
| download | blackbird-op-linux-390944439f746824faec51b576f50cb5ef18745b.tar.gz blackbird-op-linux-390944439f746824faec51b576f50cb5ef18745b.zip | |
EDAC: Fixup scrubrate manipulation
Make the ->{get|set}_sdram_scrub_rate return the actual scrub rate
bandwidth it succeeded setting and remove superfluous arg pointer used
for that. A negative value returned still means that an error occurred
while setting the scrubrate. Document this for future reference.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
Diffstat (limited to 'drivers/edac/amd64_edac.c')
| -rw-r--r-- | drivers/edac/amd64_edac.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index f621aa8becee..8c176fb8a8fb 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -77,7 +77,11 @@ static int ddr3_dbam[] = { [0] = -1, *FIXME: Produce a better mapping/linearisation. */ -struct scrubrate scrubrates[] = { + +struct scrubrate { + u32 scrubval; /* bit pattern for scrub rate */ + u32 bandwidth; /* bandwidth consumed (bytes/sec) */ +} scrubrates[] = { { 0x01, 1600000000UL}, { 0x02, 800000000UL}, { 0x03, 400000000UL}, @@ -151,14 +155,12 @@ static int __amd64_set_scrub_rate(struct pci_dev *ctl, u32 new_bw, u32 min_rate) } scrubval = scrubrates[i].scrubval; - if (scrubval) - amd64_info("Setting scrub rate bandwidth: %u\n", - scrubrates[i].bandwidth); - else - amd64_info("Turning scrubbing off.\n"); pci_write_bits32(ctl, K8_SCRCTRL, scrubval, 0x001F); + if (scrubval) + return scrubrates[i].bandwidth; + return 0; } @@ -169,11 +171,11 @@ static int amd64_set_scrub_rate(struct mem_ctl_info *mci, u32 bw) return __amd64_set_scrub_rate(pvt->F3, bw, pvt->min_scrubrate); } -static int amd64_get_scrub_rate(struct mem_ctl_info *mci, u32 *bw) +static int amd64_get_scrub_rate(struct mem_ctl_info *mci) { struct amd64_pvt *pvt = mci->pvt_info; u32 scrubval = 0; - int status = -1, i; + int i, retval = -EINVAL; amd64_read_pci_cfg(pvt->F3, K8_SCRCTRL, &scrubval); @@ -183,13 +185,11 @@ static int amd64_get_scrub_rate(struct mem_ctl_info *mci, u32 *bw) for (i = 0; i < ARRAY_SIZE(scrubrates); i++) { if (scrubrates[i].scrubval == scrubval) { - *bw = scrubrates[i].bandwidth; - status = 0; + retval = scrubrates[i].bandwidth; break; } } - - return status; + return retval; } /* Map from a CSROW entry to the mask entry that operates on it */ |
