1 files changed, 131 insertions, 0 deletions
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_api.h b/drivers/net/ethernet/pensando/ionic/ionic_api.h
new file mode 100644
index 000000000000..bd88666836b8
--- /dev/null
+++ b/drivers/net/ethernet/pensando/ionic/ionic_api.h
@@ -0,0 +1,131 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2018-2025, Advanced Micro Devices, Inc. */
+
+#ifndef _IONIC_API_H_
+#define _IONIC_API_H_
+
+#include <linux/auxiliary_bus.h>
+#include "ionic_if.h"
+#include "ionic_regs.h"
+
+/**
+ * struct ionic_aux_dev - Auxiliary device information
+ * @lif:        Logical interface
+ * @idx:        Index identifier
+ * @adev:       Auxiliary device
+ */
+struct ionic_aux_dev {
+	struct ionic_lif *lif;
+	int idx;
+	struct auxiliary_device adev;
+};
+
+/**
+ * struct ionic_admin_ctx - Admin command context
+ * @work:       Work completion wait queue element
+ * @cmd:        Admin command (64B) to be copied to the queue
+ * @comp:       Admin completion (16B) copied from the queue
+ */
+struct ionic_admin_ctx {
+	struct completion work;
+	union ionic_adminq_cmd cmd;
+	union ionic_adminq_comp comp;
+};
+
+#define IONIC_INTR_INDEX_NOT_ASSIGNED	-1
+#define IONIC_INTR_NAME_MAX_SZ		32
+
+/**
+ * struct ionic_intr_info - Interrupt information
+ * @name:          Name identifier
+ * @rearm_count:   Interrupt rearm count
+ * @index:         Interrupt index position
+ * @vector:        Interrupt number
+ * @dim_coal_hw:   Interrupt coalesce value in hardware units
+ * @affinity_mask: CPU affinity mask
+ * @aff_notify:    context for notification of IRQ affinity changes
+ */
+struct ionic_intr_info {
+	char name[IONIC_INTR_NAME_MAX_SZ];
+	u64 rearm_count;
+	unsigned int index;
+	unsigned int vector;
+	u32 dim_coal_hw;
+	cpumask_var_t *affinity_mask;
+	struct irq_affinity_notify aff_notify;
+};
+
+/**
+ * ionic_adminq_post_wait - Post an admin command and wait for response
+ * @lif:        Logical interface
+ * @ctx:        API admin command context
+ *
+ * Post the command to an admin queue in the ethernet driver.  If this command
+ * succeeds, then the command has been posted, but that does not indicate a
+ * completion.  If this command returns success, then the completion callback
+ * will eventually be called.
+ *
+ * Return: zero or negative error status
+ */
+int ionic_adminq_post_wait(struct ionic_lif *lif, struct ionic_admin_ctx *ctx);
+
+/**
+ * ionic_error_to_errno - Transform ionic_if errors to os errno
+ * @code:       Ionic error number
+ *
+ * Return:      Negative OS error number or zero
+ */
+int ionic_error_to_errno(enum ionic_status_code code);
+
+/**
+ * ionic_request_rdma_reset - request reset or disable the device or lif
+ * @lif:        Logical interface
+ *
+ * The reset is triggered asynchronously. It will wait until reset request
+ * completes or times out.
+ */
+void ionic_request_rdma_reset(struct ionic_lif *lif);
+
+/**
+ * ionic_intr_alloc - Reserve a device interrupt
+ * @lif:        Logical interface
+ * @intr:       Reserved ionic interrupt structure
+ *
+ * Reserve an interrupt index and get irq number for that index.
+ *
+ * Return: zero or negative error status
+ */
+int ionic_intr_alloc(struct ionic_lif *lif, struct ionic_intr_info *intr);
+
+/**
+ * ionic_intr_free - Release a device interrupt index
+ * @lif:        Logical interface
+ * @intr:       Interrupt index
+ *
+ * Mark the interrupt index unused so that it can be reserved again.
+ */
+void ionic_intr_free(struct ionic_lif *lif, int intr);
+
+/**
+ * ionic_get_cmb - Reserve cmb pages
+ * @lif:         Logical interface
+ * @pgid:        First page index
+ * @pgaddr:      First page bus addr (contiguous)
+ * @order:       Log base two number of pages (PAGE_SIZE)
+ * @stride_log2: Size of stride to determine CMB pool
+ * @expdb:       Will be set to true if this CMB region has expdb enabled
+ *
+ * Return: zero or negative error status
+ */
+int ionic_get_cmb(struct ionic_lif *lif, u32 *pgid, phys_addr_t *pgaddr,
+		  int order, u8 stride_log2, bool *expdb);
+
+/**
+ * ionic_put_cmb - Release cmb pages
+ * @lif:        Logical interface
+ * @pgid:       First page index
+ * @order:      Log base two number of pages (PAGE_SIZE)
+ */
+void ionic_put_cmb(struct ionic_lif *lif, u32 pgid, int order);
+
+#endif /* _IONIC_API_H_ */