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-rw-r--r--drivers/misc/cxl/api.c21
-rw-r--r--drivers/misc/cxl/cxl.h3
-rw-r--r--include/misc/cxl.h7
3 files changed, 31 insertions, 0 deletions
diff --git a/drivers/misc/cxl/api.c b/drivers/misc/cxl/api.c
index f11dc0e5fdd6..7707055d33ab 100644
--- a/drivers/misc/cxl/api.c
+++ b/drivers/misc/cxl/api.c
@@ -94,6 +94,27 @@ static irq_hw_number_t cxl_find_afu_irq(struct cxl_context *ctx, int num)
return 0;
}
+
+int cxl_set_priv(struct cxl_context *ctx, void *priv)
+{
+ if (!ctx)
+ return -EINVAL;
+
+ ctx->priv = priv;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(cxl_set_priv);
+
+void *cxl_get_priv(struct cxl_context *ctx)
+{
+ if (!ctx)
+ return ERR_PTR(-EINVAL);
+
+ return ctx->priv;
+}
+EXPORT_SYMBOL_GPL(cxl_get_priv);
+
int cxl_allocate_afu_irqs(struct cxl_context *ctx, int num)
{
int res;
diff --git a/drivers/misc/cxl/cxl.h b/drivers/misc/cxl/cxl.h
index 422ee53868a8..27578fceda8a 100644
--- a/drivers/misc/cxl/cxl.h
+++ b/drivers/misc/cxl/cxl.h
@@ -484,6 +484,9 @@ struct cxl_context {
/* Only used in PR mode */
u64 process_token;
+ /* driver private data */
+ void *priv;
+
unsigned long *irq_bitmap; /* Accessed from IRQ context */
struct cxl_irq_ranges irqs;
struct list_head irq_names;
diff --git a/include/misc/cxl.h b/include/misc/cxl.h
index 17419f61e611..b6d040f31f76 100644
--- a/include/misc/cxl.h
+++ b/include/misc/cxl.h
@@ -86,6 +86,13 @@ struct cxl_context *cxl_dev_context_init(struct pci_dev *dev);
int cxl_release_context(struct cxl_context *ctx);
/*
+ * Set and get private data associated with a context. Allows drivers to have a
+ * back pointer to some useful structure.
+ */
+int cxl_set_priv(struct cxl_context *ctx, void *priv);
+void *cxl_get_priv(struct cxl_context *ctx);
+
+/*
* Allocate AFU interrupts for this context. num=0 will allocate the default
* for this AFU as given in the AFU descriptor. This number doesn't include the
* interrupt 0 (CAIA defines AFU IRQ 0 for page faults). Each interrupt to be