1 files changed, 67 insertions, 0 deletions
diff --git a/include/linux/ism.h b/include/linux/ism.h
new file mode 100644
index 000000000000..b7feb4dcd5a8
--- /dev/null
+++ b/include/linux/ism.h
@@ -0,0 +1,67 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ *  Internal Shared Memory
+ *
+ *  Definitions for the ISM module
+ *
+ *  Copyright IBM Corp. 2022
+ */
+#ifndef _ISM_H
+#define _ISM_H
+
+#include <linux/workqueue.h>
+
+/* Unless we gain unexpected popularity, this limit should hold for a while */
+#define MAX_CLIENTS		8
+#define ISM_NR_DMBS		1920
+
+struct ism_dev {
+	spinlock_t lock; /* protects the ism device */
+	spinlock_t cmd_lock; /* serializes cmds */
+	struct list_head list;
+	struct dibs_dev *dibs;
+	struct pci_dev *pdev;
+
+	struct ism_sba *sba;
+	dma_addr_t sba_dma_addr;
+	DECLARE_BITMAP(sba_bitmap, ISM_NR_DMBS);
+	void *priv[MAX_CLIENTS];
+
+	struct ism_eq *ieq;
+	dma_addr_t ieq_dma_addr;
+
+	int ieq_idx;
+
+	struct ism_client *subs[MAX_CLIENTS];
+};
+
+struct ism_event {
+	u32 type;
+	u32 code;
+	u64 tok;
+	u64 time;
+	u64 info;
+};
+
+struct ism_client {
+	const char *name;
+	void (*handle_event)(struct ism_dev *dev, struct ism_event *event);
+	/* Private area - don't touch! */
+	u8 id;
+};
+
+int ism_register_client(struct ism_client *client);
+int  ism_unregister_client(struct ism_client *client);
+static inline void *ism_get_priv(struct ism_dev *dev,
+				 struct ism_client *client) {
+	return dev->priv[client->id];
+}
+
+static inline void ism_set_priv(struct ism_dev *dev, struct ism_client *client,
+				void *priv) {
+	dev->priv[client->id] = priv;
+}
+
+const struct smcd_ops *ism_get_smcd_ops(void);
+
+#endif	/* _ISM_H */