diff options
| author | Yazen Ghannam <Yazen.Ghannam@amd.com> | 2016-11-17 17:57:42 -0500 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2016-11-28 17:50:12 +0100 |
| commit | 8051c0af3c846937d5454766fe407b08a7681256 (patch) | |
| tree | 5a55c06710081a59e92f83a7e7f9e4b82c9124b6 /drivers/edac | |
| parent | a6c14dce85e2d0472c4c7c1694034560d1772bc2 (diff) | |
| download | linux-8051c0af3c846937d5454766fe407b08a7681256.tar.bz2 | |
EDAC, amd64: Add Fam17h scrubber support
Fam17h has new register offsets and fields for setting up the DRAM
scrubber so add support for this.
Signed-off-by: Yazen Ghannam <Yazen.Ghannam@amd.com>
Cc: Aravind Gopalakrishnan <aravindksg.lkml@gmail.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: x86-ml <x86@kernel.org>
Link: http://lkml.kernel.org/r/1479423463-8536-17-git-send-email-Yazen.Ghannam@amd.com
Signed-off-by: Borislav Petkov <bp@suse.de>
Diffstat (limited to 'drivers/edac')
| -rw-r--r-- | drivers/edac/amd64_edac.c | 43 | ||||
| -rw-r--r-- | drivers/edac/amd64_edac.h | 2 |
2 files changed, 40 insertions, 5 deletions
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c index 461da1323f2f..52ae415aa699 100644 --- a/drivers/edac/amd64_edac.c +++ b/drivers/edac/amd64_edac.c @@ -164,8 +164,23 @@ static inline int amd64_read_dct_pci_cfg(struct amd64_pvt *pvt, u8 dct, * other archs, we might not have access to the caches directly. */ +static inline void __f17h_set_scrubval(struct amd64_pvt *pvt, u32 scrubval) +{ + /* + * Fam17h supports scrub values between 0x5 and 0x14. Also, the values + * are shifted down by 0x5, so scrubval 0x5 is written to the register + * as 0x0, scrubval 0x6 as 0x1, etc. + */ + if (scrubval >= 0x5 && scrubval <= 0x14) { + scrubval -= 0x5; + pci_write_bits32(pvt->F6, F17H_SCR_LIMIT_ADDR, scrubval, 0xF); + pci_write_bits32(pvt->F6, F17H_SCR_BASE_ADDR, 1, 0x1); + } else { + pci_write_bits32(pvt->F6, F17H_SCR_BASE_ADDR, 0, 0x1); + } +} /* - * scan the scrub rate mapping table for a close or matching bandwidth value to + * Scan the scrub rate mapping table for a close or matching bandwidth value to * issue. If requested is too big, then use last maximum value found. */ static int __set_scrub_rate(struct amd64_pvt *pvt, u32 new_bw, u32 min_rate) @@ -196,7 +211,9 @@ static int __set_scrub_rate(struct amd64_pvt *pvt, u32 new_bw, u32 min_rate) scrubval = scrubrates[i].scrubval; - if (pvt->fam == 0x15 && pvt->model == 0x60) { + if (pvt->fam == 0x17) { + __f17h_set_scrubval(pvt, scrubval); + } else if (pvt->fam == 0x15 && pvt->model == 0x60) { f15h_select_dct(pvt, 0); pci_write_bits32(pvt->F2, F15H_M60H_SCRCTRL, scrubval, 0x001F); f15h_select_dct(pvt, 1); @@ -233,18 +250,34 @@ static int set_scrub_rate(struct mem_ctl_info *mci, u32 bw) static int get_scrub_rate(struct mem_ctl_info *mci) { struct amd64_pvt *pvt = mci->pvt_info; - u32 scrubval = 0; int i, retval = -EINVAL; + u32 scrubval = 0; - if (pvt->fam == 0x15) { + switch (pvt->fam) { + case 0x15: /* Erratum #505 */ if (pvt->model < 0x10) f15h_select_dct(pvt, 0); if (pvt->model == 0x60) amd64_read_pci_cfg(pvt->F2, F15H_M60H_SCRCTRL, &scrubval); - } else + break; + + case 0x17: + amd64_read_pci_cfg(pvt->F6, F17H_SCR_BASE_ADDR, &scrubval); + if (scrubval & BIT(0)) { + amd64_read_pci_cfg(pvt->F6, F17H_SCR_LIMIT_ADDR, &scrubval); + scrubval &= 0xF; + scrubval += 0x5; + } else { + scrubval = 0; + } + break; + + default: amd64_read_pci_cfg(pvt->F3, SCRCTRL, &scrubval); + break; + } scrubval = scrubval & 0x001F; diff --git a/drivers/edac/amd64_edac.h b/drivers/edac/amd64_edac.h index 738166393673..34d915782d4a 100644 --- a/drivers/edac/amd64_edac.h +++ b/drivers/edac/amd64_edac.h @@ -204,6 +204,8 @@ #define DCT_SEL_HI 0x114 #define F15H_M60H_SCRCTRL 0x1C8 +#define F17H_SCR_BASE_ADDR 0x48 +#define F17H_SCR_LIMIT_ADDR 0x4C /* * Function 3 - Misc Control |