Add sysfs node to show supported NPS mode for the
partition configuration selected using xcp_config
v2: Hide node if dynamic nps switch not supported
v3: Fix removal of files in case of error
Signed-off-by: Asad Kamal <asad.kamal@xxxxxxx>
Reviewed-by: Lijo Lazar <lijo.lazar@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c | 48 ++++++++++++++++++++++++-
1 file changed, 47 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
index 83a16918ea76..e209b5e101df 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
@@ -471,6 +471,16 @@ static const char *xcp_desc[] = {
[AMDGPU_CPX_PARTITION_MODE] = "CPX",
};
+static const char *nps_desc[] = {
+ [UNKNOWN_MEMORY_PARTITION_MODE] = "UNKNOWN",
+ [AMDGPU_NPS1_PARTITION_MODE] = "NPS1",
+ [AMDGPU_NPS2_PARTITION_MODE] = "NPS2",
+ [AMDGPU_NPS3_PARTITION_MODE] = "NPS3",
+ [AMDGPU_NPS4_PARTITION_MODE] = "NPS4",
+ [AMDGPU_NPS6_PARTITION_MODE] = "NPS6",
+ [AMDGPU_NPS8_PARTITION_MODE] = "NPS8",
+};
+
ATTRIBUTE_GROUPS(xcp_cfg_res_sysfs);
#define to_xcp_attr(x) \
@@ -540,6 +550,26 @@ static ssize_t supported_xcp_configs_show(struct kobject *kobj,
return size;
}
+static ssize_t supported_nps_configs_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ struct amdgpu_xcp_cfg *xcp_cfg = to_xcp_cfg(kobj);
+ int size = 0, mode;
+ char *sep = "";
+
+ if (!xcp_cfg || !xcp_cfg->compatible_nps_modes)
+ return sysfs_emit(buf, "Not supported\n");
+
+ for_each_inst(mode, xcp_cfg->compatible_nps_modes) {
+ size += sysfs_emit_at(buf, size, "%s%s", sep, nps_desc[mode]);
+ sep = ", ";
+ }
+
+ size += sysfs_emit_at(buf, size, "\n");
+
+ return size;
+}
+
static ssize_t xcp_config_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
@@ -596,6 +626,9 @@ static const struct kobj_type xcp_cfg_sysfs_ktype = {
static struct kobj_attribute supp_part_sysfs_mode =
__ATTR_RO(supported_xcp_configs);
+static struct kobj_attribute supp_nps_sysfs_mode =
+ __ATTR_RO(supported_nps_configs);
+
static const struct attribute *xcp_attrs[] = {
&supp_part_sysfs_mode.attr,
&xcp_cfg_sysfs_mode.attr,
@@ -625,13 +658,24 @@ void amdgpu_xcp_cfg_sysfs_init(struct amdgpu_device *adev)
if (r)
goto err1;
+ if (adev->gmc.supported_nps_modes != 0) {
+ r = sysfs_create_file(&xcp_cfg->kobj, &supp_nps_sysfs_mode.attr);
+ if (r) {
+ sysfs_remove_files(&xcp_cfg->kobj, xcp_attrs);
+ goto err1;
+ }
+ }
+
mode = (xcp_cfg->xcp_mgr->mode ==
AMDGPU_UNKNOWN_COMPUTE_PARTITION_MODE) ?
AMDGPU_SPX_PARTITION_MODE :
xcp_cfg->xcp_mgr->mode;
r = amdgpu_xcp_get_res_info(xcp_cfg->xcp_mgr, mode, xcp_cfg);
- if (r)
+ if (r) {
+ sysfs_remove_file(&xcp_cfg->kobj, &supp_nps_sysfs_mode.attr);
+ sysfs_remove_files(&xcp_cfg->kobj, xcp_attrs);
goto err1;
+ }
xcp_cfg->mode = mode;
for (i = 0; i < xcp_cfg->num_res; i++) {
@@ -653,6 +697,7 @@ void amdgpu_xcp_cfg_sysfs_init(struct amdgpu_device *adev)
kobject_put(&xcp_res->kobj);
}
+ sysfs_remove_file(&xcp_cfg->kobj, &supp_nps_sysfs_mode.attr);
sysfs_remove_files(&xcp_cfg->kobj, xcp_attrs);
err1:
kobject_put(&xcp_cfg->kobj);
@@ -673,6 +718,7 @@ void amdgpu_xcp_cfg_sysfs_fini(struct amdgpu_device *adev)
kobject_put(&xcp_res->kobj);
}
+ sysfs_remove_file(&xcp_cfg->kobj, &supp_nps_sysfs_mode.attr);
sysfs_remove_files(&xcp_cfg->kobj, xcp_attrs);
kobject_put(&xcp_cfg->kobj);
}
--
2.46.0
