diff options
| -rw-r--r-- | drivers/cxl/core/region.c | 24 | ||||
| -rw-r--r-- | drivers/cxl/cxl.h | 1 |
2 files changed, 25 insertions, 0 deletions
diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c index 912796fd708e..ed8469fa55a9 100644 --- a/drivers/cxl/core/region.c +++ b/drivers/cxl/core/region.c @@ -3483,6 +3483,15 @@ static int match_root_decoder(struct device *dev, const void *data) return range_contains(r1, r2); } +static int cxl_root_setup_translation(struct cxl_root *cxl_root, + struct cxl_region_context *ctx) +{ + if (!cxl_root->ops.translation_setup_root) + return 0; + + return cxl_root->ops.translation_setup_root(cxl_root, ctx); +} + /* * Note, when finished with the device, drop the reference with * put_device() or use the put_cxl_root_decoder helper. @@ -3495,6 +3504,21 @@ get_cxl_root_decoder(struct cxl_endpoint_decoder *cxled, struct cxl_port *port = cxled_to_port(cxled); struct cxl_root *cxl_root __free(put_cxl_root) = find_cxl_root(port); struct device *cxlrd_dev; + int rc; + + /* + * Adjust the endpoint's HPA range and interleaving + * configuration to the root decoder’s memory space before + * setting up the root decoder. + */ + rc = cxl_root_setup_translation(cxl_root, ctx); + if (rc) { + dev_err(cxlmd->dev.parent, + "%s:%s Failed to setup translation for address range %#llx:%#llx\n", + dev_name(&cxlmd->dev), dev_name(&cxled->cxld.dev), + ctx->hpa_range.start, ctx->hpa_range.end); + return ERR_PTR(rc); + } cxlrd_dev = device_find_child(&cxl_root->port.dev, &ctx->hpa_range, match_root_decoder); diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h index 0e15dc6e169f..8ea334d81edf 100644 --- a/drivers/cxl/cxl.h +++ b/drivers/cxl/cxl.h @@ -652,6 +652,7 @@ struct cxl_root_ops { int (*qos_class)(struct cxl_root *cxl_root, struct access_coordinate *coord, int entries, int *qos_class); + int (*translation_setup_root)(struct cxl_root *cxl_root, void *data); }; /** |