diff options
| author | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2023-05-26 12:58:21 +0300 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2023-05-30 21:20:35 +0300 |
| commit | d717d7f3df18494baafd9595fb4bcb9c380d7389 (patch) | |
| tree | a85db24346118496f9f723791c5dac631bbc99de /drivers/cxl/cxl.h | |
| parent | 143f83e2003a4c3ca0c2558254129569048e0759 (diff) | |
| download | linux-d717d7f3df18494baafd9595fb4bcb9c380d7389.tar.xz | |
cxl: Add functions to get an instance of / count regblocks of a given type
Until the recently release CXL 3.0 specification, there
was only ever one instance of any given register block pointed
to by the Register Block Locator DVSEC. Now, the specification allows
for multiple CXL PMU instances, each with their own register block.
To enable this add cxl_find_regblock_instance() that takes an index
parameter and use that to implement cxl_count_regblock() and
cxl_find_regblock().
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20230526095824.16336-3-Jonathan.Cameron@huawei.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/cxl/cxl.h')
| -rw-r--r-- | drivers/cxl/cxl.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h index f93a28538962..1c3d9461de1f 100644 --- a/drivers/cxl/cxl.h +++ b/drivers/cxl/cxl.h @@ -260,6 +260,9 @@ int cxl_map_device_regs(struct device *dev, struct cxl_device_regs *regs, struct cxl_register_map *map); enum cxl_regloc_type; +int cxl_count_regblock(struct pci_dev *pdev, enum cxl_regloc_type type); +int cxl_find_regblock_instance(struct pci_dev *pdev, enum cxl_regloc_type type, + struct cxl_register_map *map, int index); int cxl_find_regblock(struct pci_dev *pdev, enum cxl_regloc_type type, struct cxl_register_map *map); |