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authorBen Widawsky <ben.widawsky@intel.com>2021-05-20 13:48:52 -0700
committerDan Williams <dan.j.williams@intel.com>2021-05-26 11:20:17 -0700
commitdd2a93a814e7ffbd4d2c3e361f4609c9bd384a96 (patch)
treeafd4d290b3c076f8def35d91a550935255d779a2 /drivers/cxl
parent199cf8c3feec2947015da84643312790b21531cb (diff)
downloadlinux-dd2a93a814e7ffbd4d2c3e361f4609c9bd384a96.tar.bz2
cxl/mem: Demarcate vendor specific capability IDs
Vendor capabilities occupy 0x8000 to 0xFFFF according to CXL 2.0 spec 8.2.8.2.1 CXL Device Capabilities. While they are not defined by the spec, they are allowed and not "unknown". Call this detail out in the logs to let users easily distinguish the difference. This patch is a squash of two earlier patches and take in some minor suggestions from both Vishal and Dan. Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Ben Widawsky <ben.widawsky@intel.com> Reviewed-by: Vishal Verma <vishal.l.verma@intel.com> Link: https://lore.kernel.org/r/20210520204852.1070780-1-ben.widawsky@intel.com Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/cxl')
-rw-r--r--drivers/cxl/core.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/cxl/core.c b/drivers/cxl/core.c
index 84b90db57420..38979c97158d 100644
--- a/drivers/cxl/core.c
+++ b/drivers/cxl/core.c
@@ -60,7 +60,10 @@ void cxl_setup_device_regs(struct device *dev, void __iomem *base,
regs->memdev = register_block;
break;
default:
- dev_dbg(dev, "Unknown cap ID: %d (0x%x)\n", cap_id, offset);
+ if (cap_id >= 0x8000)
+ dev_dbg(dev, "Vendor cap ID: %#x offset: %#x\n", cap_id, offset);
+ else
+ dev_dbg(dev, "Unknown cap ID: %#x offset: %#x\n", cap_id, offset);
break;
}
}