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path: root/drivers/misc/cxl/pci.c
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Diffstat (limited to 'drivers/misc/cxl/pci.c')
-rw-r--r--drivers/misc/cxl/pci.c41
1 files changed, 27 insertions, 14 deletions
diff --git a/drivers/misc/cxl/pci.c b/drivers/misc/cxl/pci.c
index 1eb9859809bf..d18b3d9292fd 100644
--- a/drivers/misc/cxl/pci.c
+++ b/drivers/misc/cxl/pci.c
@@ -375,7 +375,7 @@ static u64 get_capp_unit_id(struct device_node *np, u32 phb_index)
return 0;
}
-static int calc_capp_routing(struct pci_dev *dev, u64 *chipid,
+int cxl_calc_capp_routing(struct pci_dev *dev, u64 *chipid,
u32 *phb_index, u64 *capp_unit_id)
{
int rc;
@@ -408,17 +408,9 @@ static int calc_capp_routing(struct pci_dev *dev, u64 *chipid,
return 0;
}
-static int init_implementation_adapter_regs_psl9(struct cxl *adapter, struct pci_dev *dev)
+int cxl_get_xsl9_dsnctl(u64 capp_unit_id, u64 *reg)
{
- u64 xsl_dsnctl, psl_fircntl;
- u64 chipid;
- u32 phb_index;
- u64 capp_unit_id;
- int rc;
-
- rc = calc_capp_routing(dev, &chipid, &phb_index, &capp_unit_id);
- if (rc)
- return rc;
+ u64 xsl_dsnctl;
/*
* CAPI Identifier bits [0:7]
@@ -454,6 +446,27 @@ static int init_implementation_adapter_regs_psl9(struct cxl *adapter, struct pci
xsl_dsnctl |= ((u64)0x04 << (63-55));
}
+ *reg = xsl_dsnctl;
+ return 0;
+}
+
+static int init_implementation_adapter_regs_psl9(struct cxl *adapter,
+ struct pci_dev *dev)
+{
+ u64 xsl_dsnctl, psl_fircntl;
+ u64 chipid;
+ u32 phb_index;
+ u64 capp_unit_id;
+ int rc;
+
+ rc = cxl_calc_capp_routing(dev, &chipid, &phb_index, &capp_unit_id);
+ if (rc)
+ return rc;
+
+ rc = cxl_get_xsl9_dsnctl(capp_unit_id, &xsl_dsnctl);
+ if (rc)
+ return rc;
+
cxl_p1_write(adapter, CXL_XSL9_DSNCTL, xsl_dsnctl);
/* Set fir_cntl to recommended value for production env */
@@ -505,7 +518,7 @@ static int init_implementation_adapter_regs_psl8(struct cxl *adapter, struct pci
u64 capp_unit_id;
int rc;
- rc = calc_capp_routing(dev, &chipid, &phb_index, &capp_unit_id);
+ rc = cxl_calc_capp_routing(dev, &chipid, &phb_index, &capp_unit_id);
if (rc)
return rc;
@@ -538,7 +551,7 @@ static int init_implementation_adapter_regs_xsl(struct cxl *adapter, struct pci_
u64 capp_unit_id;
int rc;
- rc = calc_capp_routing(dev, &chipid, &phb_index, &capp_unit_id);
+ rc = cxl_calc_capp_routing(dev, &chipid, &phb_index, &capp_unit_id);
if (rc)
return rc;
@@ -1897,7 +1910,7 @@ static void cxl_pci_remove_adapter(struct cxl *adapter)
#define CXL_MAX_PCIEX_PARENT 2
-static int cxl_slot_is_switched(struct pci_dev *dev)
+int cxl_slot_is_switched(struct pci_dev *dev)
{
struct device_node *np;
int depth = 0;

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