diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2023-06-14 18:30:02 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2023-06-25 14:31:08 -0700 |
| commit | 59f8d1510739e92135df62d52e8c29bc075c46ad (patch) | |
| tree | eefd4686a05a67fa7ea06088cfc5a7fb0a2e1cbf /drivers/cxl/mem.c | |
| parent | 3fe7feb0f37e4dcbd51b9a4019866dc55b965a55 (diff) | |
cxl/mbox: Move mailbox related driver state to its own data structure
'struct cxl_dev_state' makes too many assumptions about the capabilities
of a CXL device. In particular it assumes a CXL device has a mailbox and
all of the infrastructure and state that comes along with that.
In preparation for supporting accelerator / Type-2 devices that may not
have a mailbox and in general maintain a minimal core context structure,
make mailbox functionality a super-set of 'struct cxl_dev_state' with
'struct cxl_memdev_state'.
With this reorganization it allows for CXL devices that support HDM
decoder mapping, but not other general-expander / Type-3 capabilities,
to only enable that subset without the rest of the mailbox
infrastructure coming along for the ride.
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/168679260240.3436160.15520641540463704524.stgit@dwillia2-xfh.jf.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/cxl/mem.c')
| -rw-r--r-- | drivers/cxl/mem.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/cxl/mem.c b/drivers/cxl/mem.c index 519edd0eb196..584f9eec57e4 100644 --- a/drivers/cxl/mem.c +++ b/drivers/cxl/mem.c @@ -117,6 +117,7 @@ DEFINE_DEBUGFS_ATTRIBUTE(cxl_poison_clear_fops, NULL, static int cxl_mem_probe(struct device *dev) { struct cxl_memdev *cxlmd = to_cxl_memdev(dev); + struct cxl_memdev_state *mds = to_cxl_memdev_state(cxlmd->cxlds); struct cxl_dev_state *cxlds = cxlmd->cxlds; struct device *endpoint_parent; struct cxl_port *parent_port; @@ -141,10 +142,10 @@ static int cxl_mem_probe(struct device *dev) dentry = cxl_debugfs_create_dir(dev_name(dev)); debugfs_create_devm_seqfile(dev, "dpamem", dentry, cxl_mem_dpa_show); - if (test_bit(CXL_POISON_ENABLED_INJECT, cxlds->poison.enabled_cmds)) + if (test_bit(CXL_POISON_ENABLED_INJECT, mds->poison.enabled_cmds)) debugfs_create_file("inject_poison", 0200, dentry, cxlmd, &cxl_poison_inject_fops); - if (test_bit(CXL_POISON_ENABLED_CLEAR, cxlds->poison.enabled_cmds)) + if (test_bit(CXL_POISON_ENABLED_CLEAR, mds->poison.enabled_cmds)) debugfs_create_file("clear_poison", 0200, dentry, cxlmd, &cxl_poison_clear_fops); @@ -227,9 +228,12 @@ static umode_t cxl_mem_visible(struct kobject *kobj, struct attribute *a, int n) { if (a == &dev_attr_trigger_poison_list.attr) { struct device *dev = kobj_to_dev(kobj); + struct cxl_memdev *cxlmd = to_cxl_memdev(dev); + struct cxl_memdev_state *mds = + to_cxl_memdev_state(cxlmd->cxlds); if (!test_bit(CXL_POISON_ENABLED_LIST, - to_cxl_memdev(dev)->cxlds->poison.enabled_cmds)) + mds->poison.enabled_cmds)) return 0; } return a->mode; |