Now that dport and decoder enumeration is centralized in the port
driver, the @host argument for these helpers can be made implicit. For
the root port the host is the port's uport device (ACPI0017 for
cxl_acpi), and for all other descendant ports the devm context is the
parent of @port.
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
---
drivers/cxl/acpi.c | 2 +-
drivers/cxl/core/hdm.c | 10 +++++-----
drivers/cxl/core/pci.c | 8 ++------
drivers/cxl/core/port.c | 9 +++++++--
drivers/cxl/cxl.h | 8 ++++----
drivers/cxl/cxlpci.h | 2 +-
drivers/cxl/port.c | 8 ++++----
tools/testing/cxl/test/cxl.c | 14 +++++---------
tools/testing/cxl/test/mock.c | 28 ++++++++++++----------------
tools/testing/cxl/test/mock.h | 9 ++++-----
10 files changed, 45 insertions(+), 53 deletions(-)
diff --git a/drivers/cxl/acpi.c b/drivers/cxl/acpi.c
index 82591642ea90..683f2ca32c97 100644
--- a/drivers/cxl/acpi.c
+++ b/drivers/cxl/acpi.c
@@ -256,7 +256,7 @@ static int add_host_bridge_dport(struct device *match, void *arg)
return 0;
}
- dport = devm_cxl_add_dport(host, root_port, match, uid, ctx.chbcr);
+ dport = devm_cxl_add_dport(root_port, match, uid, ctx.chbcr);
if (IS_ERR(dport)) {
dev_err(host, "failed to add downstream port: %s\n",
dev_name(match));
diff --git a/drivers/cxl/core/hdm.c b/drivers/cxl/core/hdm.c
index 802048dc2046..701b510c76d2 100644
--- a/drivers/cxl/core/hdm.c
+++ b/drivers/cxl/core/hdm.c
@@ -44,7 +44,7 @@ static int add_hdm_decoder(struct cxl_port *port, struct cxl_decoder *cxld,
* are claimed and passed to the single dport. Disable the range until the first
* CXL region is enumerated / activated.
*/
-int devm_cxl_add_passthrough_decoder(struct device *host, struct cxl_port *port)
+int devm_cxl_add_passthrough_decoder(struct cxl_port *port)
{
struct cxl_decoder *cxld;
struct cxl_dport *dport;
@@ -96,18 +96,18 @@ static void __iomem *map_hdm_decoder_regs(struct cxl_port *port,
* devm_cxl_setup_hdm - map HDM decoder component registers
* @port: cxl_port to map
*/
-struct cxl_hdm *devm_cxl_setup_hdm(struct device *host, struct cxl_port *port)
+struct cxl_hdm *devm_cxl_setup_hdm(struct cxl_port *port)
{
void __iomem *crb, __iomem *hdm;
struct device *dev = &port->dev;
struct cxl_hdm *cxlhdm;
- cxlhdm = devm_kzalloc(host, sizeof(*cxlhdm), GFP_KERNEL);
+ cxlhdm = devm_kzalloc(dev, sizeof(*cxlhdm), GFP_KERNEL);
if (!cxlhdm)
return ERR_PTR(-ENOMEM);
cxlhdm->port = port;
- crb = devm_cxl_iomap_block(host, port->component_reg_phys,
+ crb = devm_cxl_iomap_block(dev, port->component_reg_phys,
CXL_COMPONENT_REG_BLOCK_SIZE);
if (!crb) {
dev_err(dev, "No component registers mapped\n");
@@ -197,7 +197,7 @@ static void init_hdm_decoder(struct cxl_decoder *cxld, int *target_map,
* devm_cxl_enumerate_decoders - add decoder objects per HDM register set
* @port: cxl_port HDM capability to scan
*/
-int devm_cxl_enumerate_decoders(struct device *host, struct cxl_hdm *cxlhdm)
+int devm_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm)
{
void __iomem *hdm = cxlhdm->regs.hdm_decoder;
struct cxl_port *port = cxlhdm->port;
diff --git a/drivers/cxl/core/pci.c b/drivers/cxl/core/pci.c
index a04220ebc03f..420296abc57a 100644
--- a/drivers/cxl/core/pci.c
+++ b/drivers/cxl/core/pci.c
@@ -15,7 +15,6 @@
struct cxl_walk_context {
struct pci_bus *bus;
- struct device *host;
struct cxl_port *port;
int type;
int error;
@@ -26,7 +25,6 @@ static int match_add_dports(struct pci_dev *pdev, void *data)
{
struct cxl_walk_context *ctx = data;
struct cxl_port *port = ctx->port;
- struct device *host = ctx->host;
struct pci_bus *bus = ctx->bus;
int type = pci_pcie_type(pdev);
struct cxl_register_map map;
@@ -50,7 +48,7 @@ static int match_add_dports(struct pci_dev *pdev, void *data)
dev_dbg(&port->dev, "failed to find component registers\n");
port_num = FIELD_GET(PCI_EXP_LNKCAP_PN, lnkcap);
- dport = devm_cxl_add_dport(host, port, &pdev->dev, port_num,
+ dport = devm_cxl_add_dport(port, &pdev->dev, port_num,
cxl_regmap_to_base(pdev, &map));
if (IS_ERR(dport)) {
ctx->error = PTR_ERR(dport);
@@ -65,13 +63,12 @@ static int match_add_dports(struct pci_dev *pdev, void *data)
/**
* devm_cxl_port_enumerate_dports - enumerate downstream ports of the upstream port
- * @host: devm context
* @port: cxl_port whose ->uport is the upstream of dports to be enumerated
*
* Returns a positive number of dports enumerated or a negative error
* code.
*/
-int devm_cxl_port_enumerate_dports(struct device *host, struct cxl_port *port)
+int devm_cxl_port_enumerate_dports(struct cxl_port *port)
{
struct pci_bus *bus = cxl_port_to_pci_bus(port);
struct cxl_walk_context ctx;
@@ -86,7 +83,6 @@ int devm_cxl_port_enumerate_dports(struct device *host, struct cxl_port *port)
type = PCI_EXP_TYPE_DOWNSTREAM;
ctx = (struct cxl_walk_context) {
- .host = host,
.port = port,
.bus = bus,
.type = type,
diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c
index efe66a8633a8..26c3eb9180cd 100644
--- a/drivers/cxl/core/port.c
+++ b/drivers/cxl/core/port.c
@@ -573,7 +573,6 @@ static void cxl_dport_unlink(void *data)
/**
* devm_cxl_add_dport - append downstream port data to a cxl_port
- * @host: devm context for allocations
* @port: the cxl_port that references this dport
* @dport_dev: firmware or PCI device representing the dport
* @port_id: identifier for this dport in a decoder's target list
@@ -583,14 +582,20 @@ static void cxl_dport_unlink(void *data)
* either the port's host (for root ports), or the port itself (for
* switch ports)
*/
-struct cxl_dport *devm_cxl_add_dport(struct device *host, struct cxl_port *port,
+struct cxl_dport *devm_cxl_add_dport(struct cxl_port *port,
struct device *dport_dev, int port_id,
resource_size_t component_reg_phys)
{
char link_name[CXL_TARGET_STRLEN];
struct cxl_dport *dport;
+ struct device *host;
int rc;
+ if (is_cxl_root(port))
+ host = port->uport;
+ else
+ host = &port->dev;
+
if (!host->driver) {
dev_WARN_ONCE(&port->dev, 1, "dport:%s bad devm context\n",
dev_name(dport_dev));
diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h
index cee71c6e2fed..7c714e559e95 100644
--- a/drivers/cxl/cxl.h
+++ b/drivers/cxl/cxl.h
@@ -307,7 +307,7 @@ struct cxl_port *devm_cxl_add_port(struct device *host, struct device *uport,
resource_size_t component_reg_phys,
struct cxl_port *parent_port);
struct cxl_port *find_cxl_root(struct device *dev);
-struct cxl_dport *devm_cxl_add_dport(struct device *host, struct cxl_port *port,
+struct cxl_dport *devm_cxl_add_dport(struct cxl_port *port,
struct device *dport, int port_id,
resource_size_t component_reg_phys);
struct cxl_decoder *to_cxl_decoder(struct device *dev);
@@ -321,9 +321,9 @@ int cxl_decoder_add(struct cxl_decoder *cxld, int *target_map);
int cxl_decoder_add_locked(struct cxl_decoder *cxld, int *target_map);
int cxl_decoder_autoremove(struct device *host, struct cxl_decoder *cxld);
struct cxl_hdm;
-struct cxl_hdm *devm_cxl_setup_hdm(struct device *host, struct cxl_port *port);
-int devm_cxl_enumerate_decoders(struct device *host, struct cxl_hdm *cxlhdm);
-int devm_cxl_add_passthrough_decoder(struct device *host, struct cxl_port *port);
+struct cxl_hdm *devm_cxl_setup_hdm(struct cxl_port *port);
+int devm_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm);
+int devm_cxl_add_passthrough_decoder(struct cxl_port *port);
extern struct bus_type cxl_bus_type;
diff --git a/drivers/cxl/cxlpci.h b/drivers/cxl/cxlpci.h
index 47640f19e899..766de340c4ce 100644
--- a/drivers/cxl/cxlpci.h
+++ b/drivers/cxl/cxlpci.h
@@ -58,5 +58,5 @@ static inline resource_size_t cxl_regmap_to_base(struct pci_dev *pdev,
return pci_resource_start(pdev, map->barno) + map->block_offset;
}
-int devm_cxl_port_enumerate_dports(struct device *host, struct cxl_port *port);
+int devm_cxl_port_enumerate_dports(struct cxl_port *port);
#endif /* __CXL_PCI_H__ */
diff --git a/drivers/cxl/port.c b/drivers/cxl/port.c
index 7b42f27c0c96..ae94a537eccc 100644
--- a/drivers/cxl/port.c
+++ b/drivers/cxl/port.c
@@ -31,18 +31,18 @@ static int cxl_port_probe(struct device *dev)
struct cxl_hdm *cxlhdm;
int rc;
- rc = devm_cxl_port_enumerate_dports(dev, port);
+ rc = devm_cxl_port_enumerate_dports(port);
if (rc < 0)
return rc;
if (rc == 1)
- return devm_cxl_add_passthrough_decoder(dev, port);
+ return devm_cxl_add_passthrough_decoder(port);
- cxlhdm = devm_cxl_setup_hdm(dev, port);
+ cxlhdm = devm_cxl_setup_hdm(port);
if (IS_ERR(cxlhdm))
return PTR_ERR(cxlhdm);
- rc = devm_cxl_enumerate_decoders(dev, cxlhdm);
+ rc = devm_cxl_enumerate_decoders(cxlhdm);
if (rc) {
dev_err(&port->dev, "Couldn't enumerate decoders (%d)\n", rc);
return rc;
diff --git a/tools/testing/cxl/test/cxl.c b/tools/testing/cxl/test/cxl.c
index ce6ace286fc7..40ed567952e6 100644
--- a/tools/testing/cxl/test/cxl.c
+++ b/tools/testing/cxl/test/cxl.c
@@ -399,8 +399,7 @@ static struct acpi_pci_root *mock_acpi_pci_find_root(acpi_handle handle)
return &mock_pci_root[host_bridge_index(adev)];
}
-static struct cxl_hdm *mock_cxl_setup_hdm(struct device *host,
- struct cxl_port *port)
+static struct cxl_hdm *mock_cxl_setup_hdm(struct cxl_port *port)
{
struct cxl_hdm *cxlhdm = devm_kzalloc(&port->dev, sizeof(*cxlhdm), GFP_KERNEL);
@@ -411,21 +410,18 @@ static struct cxl_hdm *mock_cxl_setup_hdm(struct device *host,
return cxlhdm;
}
-static int mock_cxl_add_passthrough_decoder(struct device *host,
- struct cxl_port *port)
+static int mock_cxl_add_passthrough_decoder(struct cxl_port *port)
{
dev_err(&port->dev, "unexpected passthrough decoder for cxl_test\n");
return -EOPNOTSUPP;
}
-static int mock_cxl_enumerate_decoders(struct device *host,
- struct cxl_hdm *cxlhdm)
+static int mock_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm)
{
return 0;
}
-static int mock_cxl_port_enumerate_dports(struct device *host,
- struct cxl_port *port)
+static int mock_cxl_port_enumerate_dports(struct cxl_port *port)
{
struct device *dev = &port->dev;
int i;
@@ -437,7 +433,7 @@ static int mock_cxl_port_enumerate_dports(struct device *host,
if (pdev->dev.parent != port->uport)
continue;
- dport = devm_cxl_add_dport(host, port, &pdev->dev, pdev->id,
+ dport = devm_cxl_add_dport(port, &pdev->dev, pdev->id,
CXL_RESOURCE_NONE);
if (IS_ERR(dport)) {
diff --git a/tools/testing/cxl/test/mock.c b/tools/testing/cxl/test/mock.c
index 18d3b65e2a9b..6e8c9d63c92d 100644
--- a/tools/testing/cxl/test/mock.c
+++ b/tools/testing/cxl/test/mock.c
@@ -131,66 +131,62 @@ __wrap_nvdimm_bus_register(struct device *dev,
}
EXPORT_SYMBOL_GPL(__wrap_nvdimm_bus_register);
-struct cxl_hdm *__wrap_devm_cxl_setup_hdm(struct device *host,
- struct cxl_port *port)
+struct cxl_hdm *__wrap_devm_cxl_setup_hdm(struct cxl_port *port)
{
int index;
struct cxl_hdm *cxlhdm;
struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
if (ops && ops->is_mock_port(port->uport))
- cxlhdm = ops->devm_cxl_setup_hdm(host, port);
+ cxlhdm = ops->devm_cxl_setup_hdm(port);
else
- cxlhdm = devm_cxl_setup_hdm(host, port);
+ cxlhdm = devm_cxl_setup_hdm(port);
put_cxl_mock_ops(index);
return cxlhdm;
}
EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_setup_hdm, CXL);
-int __wrap_devm_cxl_add_passthrough_decoder(struct device *host,
- struct cxl_port *port)
+int __wrap_devm_cxl_add_passthrough_decoder(struct cxl_port *port)
{
int rc, index;
struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
if (ops && ops->is_mock_port(port->uport))
- rc = ops->devm_cxl_add_passthrough_decoder(host, port);
+ rc = ops->devm_cxl_add_passthrough_decoder(port);
else
- rc = devm_cxl_add_passthrough_decoder(host, port);
+ rc = devm_cxl_add_passthrough_decoder(port);
put_cxl_mock_ops(index);
return rc;
}
EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_add_passthrough_decoder, CXL);
-int __wrap_devm_cxl_enumerate_decoders(struct device *host,
- struct cxl_hdm *cxlhdm)
+int __wrap_devm_cxl_enumerate_decoders(struct cxl_hdm *cxlhdm)
{
int rc, index;
struct cxl_port *port = cxlhdm->port;
struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
if (ops && ops->is_mock_port(port->uport))
- rc = ops->devm_cxl_enumerate_decoders(host, cxlhdm);
+ rc = ops->devm_cxl_enumerate_decoders(cxlhdm);
else
- rc = devm_cxl_enumerate_decoders(host, cxlhdm);
+ rc = devm_cxl_enumerate_decoders(cxlhdm);
put_cxl_mock_ops(index);
return rc;
}
EXPORT_SYMBOL_NS_GPL(__wrap_devm_cxl_enumerate_decoders, CXL);
-int __wrap_devm_cxl_port_enumerate_dports(struct device *host,
- struct cxl_port *port)
+int __wrap_devm_cxl_port_enumerate_dports(struct cxl_port *port)
{
int rc, index;
struct cxl_mock_ops *ops = get_cxl_mock_ops(&index);
if (ops && ops->is_mock_port(port->uport))
- rc = ops->devm_cxl_port_enumerate_dports(host, port);
+ rc = ops->devm_cxl_port_enumerate_dports(port);
else
- rc = devm_cxl_port_enumerate_dports(host, port);
+ rc = devm_cxl_port_enumerate_dports(port);
put_cxl_mock_ops(index);
return rc;
diff --git a/tools/testing/cxl/test/mock.h b/tools/testing/cxl/test/mock.h
index 15e48063ea4b..738f24e3988a 100644
--- a/tools/testing/cxl/test/mock.h
+++ b/tools/testing/cxl/test/mock.h
@@ -19,11 +19,10 @@ struct cxl_mock_ops {
bool (*is_mock_bus)(struct pci_bus *bus);
bool (*is_mock_port)(struct device *dev);
bool (*is_mock_dev)(struct device *dev);
- int (*devm_cxl_port_enumerate_dports)(struct device *host,
- struct cxl_port *port);
- struct cxl_hdm *(*devm_cxl_setup_hdm)(struct device *host, struct cxl_port *port);
- int (*devm_cxl_add_passthrough_decoder)(struct device *host, struct cxl_port *port);
- int (*devm_cxl_enumerate_decoders)(struct device *host, struct cxl_hdm *hdm);
+ int (*devm_cxl_port_enumerate_dports)(struct cxl_port *port);
+ struct cxl_hdm *(*devm_cxl_setup_hdm)(struct cxl_port *port);
+ int (*devm_cxl_add_passthrough_decoder)(struct cxl_port *port);
+ int (*devm_cxl_enumerate_decoders)(struct cxl_hdm *hdm);
};
void register_cxl_mock_ops(struct cxl_mock_ops *ops);
