diff options
Diffstat (limited to 'drivers/cxl/acpi.c')
| -rw-r--r-- | drivers/cxl/acpi.c | 43 |
1 files changed, 15 insertions, 28 deletions
diff --git a/drivers/cxl/acpi.c b/drivers/cxl/acpi.c index 259441245687..8c2ced91518b 100644 --- a/drivers/cxl/acpi.c +++ b/drivers/cxl/acpi.c @@ -168,10 +168,10 @@ static int add_host_bridge_uport(struct device *match, void *arg) struct device *host = root_port->dev.parent; struct acpi_device *bridge = to_cxl_host_bridge(host, match); struct acpi_pci_root *pci_root; - int single_port_map[1], rc; - struct cxl_decoder *cxld; struct cxl_dport *dport; + struct cxl_hdm *cxlhdm; struct cxl_port *port; + int rc; if (!bridge) return 0; @@ -200,37 +200,24 @@ static int add_host_bridge_uport(struct device *match, void *arg) rc = devm_cxl_port_enumerate_dports(host, port); if (rc < 0) return rc; - if (rc > 1) - return 0; - - /* TODO: Scan CHBCR for HDM Decoder resources */ - - /* - * Per the CXL specification (8.2.5.12 CXL HDM Decoder Capability - * Structure) single ported host-bridges need not publish a decoder - * capability when a passthrough decode can be assumed, i.e. all - * transactions that the uport sees are claimed and passed to the single - * dport. Disable the range until the first CXL region is enumerated / - * activated. - */ - cxld = cxl_switch_decoder_alloc(port, 1); - if (IS_ERR(cxld)) - return PTR_ERR(cxld); - cxl_device_lock(&port->dev); - dport = list_first_entry(&port->dports, typeof(*dport), list); - cxl_device_unlock(&port->dev); + if (rc == 1) { + rc = devm_cxl_add_passthrough_decoder(host, port); + goto out; + } - single_port_map[0] = dport->port_id; + cxlhdm = devm_cxl_setup_hdm(host, port); + if (IS_ERR(cxlhdm)) { + rc = PTR_ERR(cxlhdm); + goto out; + } - rc = cxl_decoder_add(cxld, single_port_map); + rc = devm_cxl_enumerate_decoders(host, cxlhdm); if (rc) - put_device(&cxld->dev); - else - rc = cxl_decoder_autoremove(host, cxld); + dev_err(&port->dev, "Couldn't enumerate decoders (%d)\n", rc); - if (rc == 0) - dev_dbg(host, "add: %s\n", dev_name(&cxld->dev)); +out: + cxl_device_unlock(&port->dev); return rc; } |