iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

cxl/acpi: Move add_host_bridge_uport() after cxl_get_chbs()

Browse Source 
Just moving code to reorder functions to later share cxl_get_chbs()
with add_host_bridge_uport().

This makes changes in the next patch visible. No other changes at all.

Signed-off-by: Robert Richter <rrichter@amd.com>
Signed-off-by: Terry Bowman <terry.bowman@amd.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20230622205523.85375-9-terry.bowman@amd.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Robert Richter 2023-06-22 15:55:04 -05:00 committed by Dan Williams
parent d076bb8c4c
commit f44c7b7ad9
1 changed files with 45 additions and 45 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

90
drivers/cxl/acpi.c
View File

@ -327,51 +327,6 @@ __mock struct acpi_device *to_cxl_host_bridge(struct device *host,
return NULL; return NULL;
} }
/*
* A host bridge is a dport to a CFMWS decode and it is a uport to the
* dport (PCIe Root Ports) in the host bridge.
*/
static int add_host_bridge_uport(struct device *match, void *arg)
{
struct cxl_port *root_port = arg;
struct device *host = root_port->dev.parent;
struct acpi_device *hb = to_cxl_host_bridge(host, match);
struct acpi_pci_root *pci_root;
struct cxl_dport *dport;
struct cxl_port *port;
struct device *bridge;
int rc;
if (!hb)
return 0;
pci_root = acpi_pci_find_root(hb->handle);
bridge = pci_root->bus->bridge;
dport = cxl_find_dport_by_dev(root_port, bridge);
if (!dport) {
dev_dbg(host, "host bridge expected and not found\n");
return 0;
}
if (dport->rch) {
dev_info(bridge, "host supports CXL (restricted)\n");
return 0;
}
rc = devm_cxl_register_pci_bus(host, bridge, pci_root->bus);
if (rc)
return rc;
port = devm_cxl_add_port(host, bridge, dport->component_reg_phys,
dport);
if (IS_ERR(port))
return PTR_ERR(port);
dev_info(bridge, "host supports CXL\n");
return 0;
}
/* Note, @dev is used by mock_acpi_table_parse_cedt() */ /* Note, @dev is used by mock_acpi_table_parse_cedt() */
struct cxl_chbs_context { struct cxl_chbs_context {
struct device *dev; struct device *dev;
@ -467,6 +422,51 @@ static int add_host_bridge_dport(struct device *match, void *arg)
return 0; return 0;
} }
/*
* A host bridge is a dport to a CFMWS decode and it is a uport to the
* dport (PCIe Root Ports) in the host bridge.
*/
static int add_host_bridge_uport(struct device *match, void *arg)
{
struct cxl_port *root_port = arg;
struct device *host = root_port->dev.parent;
struct acpi_device *hb = to_cxl_host_bridge(host, match);
struct acpi_pci_root *pci_root;
struct cxl_dport *dport;
struct cxl_port *port;
struct device *bridge;
int rc;
if (!hb)
return 0;
pci_root = acpi_pci_find_root(hb->handle);
bridge = pci_root->bus->bridge;
dport = cxl_find_dport_by_dev(root_port, bridge);
if (!dport) {
dev_dbg(host, "host bridge expected and not found\n");
return 0;
}
if (dport->rch) {
dev_info(bridge, "host supports CXL (restricted)\n");
return 0;
}
rc = devm_cxl_register_pci_bus(host, bridge, pci_root->bus);
if (rc)
return rc;
port = devm_cxl_add_port(host, bridge, dport->component_reg_phys,
dport);
if (IS_ERR(port))
return PTR_ERR(port);
dev_info(bridge, "host supports CXL\n");
return 0;
}
static int add_root_nvdimm_bridge(struct device *match, void *data) static int add_root_nvdimm_bridge(struct device *match, void *data)
{ {
struct cxl_decoder *cxld; struct cxl_decoder *cxld;