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authorIan Munsie <imunsie@au1.ibm.com>2016-07-14 07:17:03 +1000
committerMichael Ellerman <mpe@ellerman.id.au>2016-07-14 20:26:36 +1000
commit62ccf2d2efefa01d0eb92cd6ecbb45ea0499fb1c (patch)
tree37ad5f8a63faae75cf5885e5558c9eb0f39fe7e0 /drivers/misc
parent48b3adf33459c1c42766d9c2068a592216fe7812 (diff)
downloadop-kernel-dev-62ccf2d2efefa01d0eb92cd6ecbb45ea0499fb1c.zip
op-kernel-dev-62ccf2d2efefa01d0eb92cd6ecbb45ea0499fb1c.tar.gz
cxl: Move cxl_afu_get / cxl_afu_put to base
The Mellanox CX4 uses a model where the AFU is one physical function of the device, and is used by other peer physical functions of the same device. This will require those other devices to grab a reference on the AFU when they are initialised to make sure that it does not go away during their lifetime. Move the AFU refcount functions to base.c so they can be called from the PHB code. Signed-off-by: Ian Munsie <imunsie@au1.ibm.com> Reviewed-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> Reviewed-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/cxl/base.c13
-rw-r--r--drivers/misc/cxl/cxl.h12
2 files changed, 13 insertions, 12 deletions
diff --git a/drivers/misc/cxl/base.c b/drivers/misc/cxl/base.c
index 2330980..7557835 100644
--- a/drivers/misc/cxl/base.c
+++ b/drivers/misc/cxl/base.c
@@ -54,6 +54,19 @@ static inline void cxl_calls_put(struct cxl_calls *calls) { }
#endif /* CONFIG_CXL_MODULE */
+/* AFU refcount management */
+struct cxl_afu *cxl_afu_get(struct cxl_afu *afu)
+{
+ return (get_device(&afu->dev) == NULL) ? NULL : afu;
+}
+EXPORT_SYMBOL_GPL(cxl_afu_get);
+
+void cxl_afu_put(struct cxl_afu *afu)
+{
+ put_device(&afu->dev);
+}
+EXPORT_SYMBOL_GPL(cxl_afu_put);
+
void cxl_slbia(struct mm_struct *mm)
{
struct cxl_calls *calls;
diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h
index 36b3237..d4aae6f 100644
--- a/drivers/misc/cxl/cxl.h
+++ b/drivers/misc/cxl/cxl.h
@@ -440,18 +440,6 @@ struct cxl_afu {
bool enabled;
};
-/* AFU refcount management */
-static inline struct cxl_afu *cxl_afu_get(struct cxl_afu *afu)
-{
-
- return (get_device(&afu->dev) == NULL) ? NULL : afu;
-}
-
-static inline void cxl_afu_put(struct cxl_afu *afu)
-{
- put_device(&afu->dev);
-}
-
struct cxl_irq_name {
struct list_head list;
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