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path: root/drivers/cxl
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Diffstat (limited to 'drivers/cxl')
-rw-r--r--drivers/cxl/acpi.c46
1 files changed, 28 insertions, 18 deletions
diff --git a/drivers/cxl/acpi.c b/drivers/cxl/acpi.c
index dcf2b39e1048..1a3e6aafbdcc 100644
--- a/drivers/cxl/acpi.c
+++ b/drivers/cxl/acpi.c
@@ -316,31 +316,27 @@ static const struct cxl_root_ops acpi_root_ops = {
.qos_class = cxl_acpi_qos_class,
};
-static int cxl_parse_cfmws(union acpi_subtable_headers *header, void *arg,
- const unsigned long end)
+static int __cxl_parse_cfmws(struct acpi_cedt_cfmws *cfmws,
+ struct cxl_cfmws_context *ctx)
{
int target_map[CXL_DECODER_MAX_INTERLEAVE];
- struct cxl_cfmws_context *ctx = arg;
struct cxl_port *root_port = ctx->root_port;
struct resource *cxl_res = ctx->cxl_res;
struct cxl_cxims_context cxims_ctx;
struct cxl_root_decoder *cxlrd;
struct device *dev = ctx->dev;
- struct acpi_cedt_cfmws *cfmws;
cxl_calc_hb_fn cxl_calc_hb;
struct cxl_decoder *cxld;
unsigned int ways, i, ig;
struct resource *res;
int rc;
- cfmws = (struct acpi_cedt_cfmws *) header;
-
rc = cxl_acpi_cfmws_verify(dev, cfmws);
if (rc) {
dev_err(dev, "CFMWS range %#llx-%#llx not registered\n",
cfmws->base_hpa,
cfmws->base_hpa + cfmws->window_size - 1);
- return 0;
+ return rc;
}
rc = eiw_to_ways(cfmws->interleave_ways, &ways);
@@ -376,7 +372,7 @@ static int cxl_parse_cfmws(union acpi_subtable_headers *header, void *arg,
cxlrd = cxl_root_decoder_alloc(root_port, ways, cxl_calc_hb);
if (IS_ERR(cxlrd))
- return 0;
+ return PTR_ERR(cxlrd);
cxld = &cxlrd->cxlsd.cxld;
cxld->flags = cfmws_to_decoder_flags(cfmws->restrictions);
@@ -420,16 +416,7 @@ err_xormap:
put_device(&cxld->dev);
else
rc = cxl_decoder_autoremove(dev, cxld);
- if (rc) {
- dev_err(dev, "Failed to add decode range: %pr", res);
- return rc;
- }
- dev_dbg(dev, "add: %s node: %d range [%#llx - %#llx]\n",
- dev_name(&cxld->dev),
- phys_to_target_node(cxld->hpa_range.start),
- cxld->hpa_range.start, cxld->hpa_range.end);
-
- return 0;
+ return rc;
err_insert:
kfree(res->name);
@@ -438,6 +425,29 @@ err_name:
return -ENOMEM;
}
+static int cxl_parse_cfmws(union acpi_subtable_headers *header, void *arg,
+ const unsigned long end)
+{
+ struct acpi_cedt_cfmws *cfmws = (struct acpi_cedt_cfmws *)header;
+ struct cxl_cfmws_context *ctx = arg;
+ struct device *dev = ctx->dev;
+ int rc;
+
+ rc = __cxl_parse_cfmws(cfmws, ctx);
+ if (rc)
+ dev_err(dev,
+ "Failed to add decode range: [%#llx - %#llx] (%d)\n",
+ cfmws->base_hpa,
+ cfmws->base_hpa + cfmws->window_size - 1, rc);
+ else
+ dev_dbg(dev, "decode range: node: %d range [%#llx - %#llx]\n",
+ phys_to_target_node(cfmws->base_hpa), cfmws->base_hpa,
+ cfmws->base_hpa + cfmws->window_size - 1);
+
+ /* never fail cxl_acpi load for a single window failure */
+ return 0;
+}
+
__mock struct acpi_device *to_cxl_host_bridge(struct device *host,
struct device *dev)
{