diff options
| author | Dave Jiang <dave.jiang@intel.com> | 2023-12-21 15:03:26 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2023-12-22 14:33:28 -0800 |
| commit | 80aa780dda20618be76162bf991d49cf962fda38 (patch) | |
| tree | a37679f09afb8fa8af2ff7d49c35d0f0e137457f /drivers/cxl/cxl.h | |
| parent | 63cef81b9dca6ddf1c34d697016f830ddcfadf28 (diff) | |
cxl: Add callback to parse the SSLBIS subtable from CDAT
Provide a callback to parse the Switched Scoped Latency and Bandwidth
Information Structure (SSLBIS) in the CDAT structures. The SSLBIS
contains the bandwidth and latency information that's tied to the
CXL switch that the data table has been read from. The extracted
values are stored to the cxl_dport correlated by the port_id
depending on the SSLBIS entry.
Coherent Device Attribute Table 1.03 2.1 Switched Scoped Latency
and Bandwidth Information Structure (DSLBIS)
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/170319620635.2212653.5194389158785365150.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/cxl/cxl.h')
| -rw-r--r-- | drivers/cxl/cxl.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h index be3b5eda875c..22f664b9f4c6 100644 --- a/drivers/cxl/cxl.h +++ b/drivers/cxl/cxl.h @@ -8,6 +8,7 @@ #include <linux/bitfield.h> #include <linux/bitops.h> #include <linux/log2.h> +#include <linux/node.h> #include <linux/io.h> /** @@ -634,6 +635,7 @@ struct cxl_rcrb_info { * @rch: Indicate whether this dport was enumerated in RCH or VH mode * @port: reference to cxl_port that contains this downstream port * @regs: Dport parsed register blocks + * @sw_coord: access coordinates (performance) for switch from CDAT */ struct cxl_dport { struct device *dport_dev; @@ -643,6 +645,7 @@ struct cxl_dport { bool rch; struct cxl_port *port; struct cxl_regs regs; + struct access_coordinate sw_coord; }; /** @@ -840,6 +843,7 @@ static inline struct cxl_dax_region *to_cxl_dax_region(struct device *dev) #endif void cxl_endpoint_parse_cdat(struct cxl_port *port); +void cxl_switch_parse_cdat(struct cxl_port *port); /* * Unit test builds overrides this to __weak, find the 'strong' version |