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-rw-r--r--drivers/crypto/cavium/cpt/cptvf.h129
1 files changed, 129 insertions, 0 deletions
diff --git a/drivers/crypto/cavium/cpt/cptvf.h b/drivers/crypto/cavium/cpt/cptvf.h
new file mode 100644
index 000000000..c695676ad
--- /dev/null
+++ b/drivers/crypto/cavium/cpt/cptvf.h
@@ -0,0 +1,129 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2016 Cavium, Inc.
+ */
+
+#ifndef __CPTVF_H
+#define __CPTVF_H
+
+#include <linux/list.h>
+#include "cpt_common.h"
+
+/* Default command queue length */
+#define CPT_CMD_QLEN 2046
+#define CPT_CMD_QCHUNK_SIZE 1023
+
+/* Default command timeout in seconds */
+#define CPT_COMMAND_TIMEOUT 4
+#define CPT_TIMER_THOLD 0xFFFF
+#define CPT_NUM_QS_PER_VF 1
+#define CPT_INST_SIZE 64
+#define CPT_NEXT_CHUNK_PTR_SIZE 8
+
+#define CPT_VF_MSIX_VECTORS 2
+#define CPT_VF_INTR_MBOX_MASK BIT(0)
+#define CPT_VF_INTR_DOVF_MASK BIT(1)
+#define CPT_VF_INTR_IRDE_MASK BIT(2)
+#define CPT_VF_INTR_NWRP_MASK BIT(3)
+#define CPT_VF_INTR_SERR_MASK BIT(4)
+#define DMA_DIRECT_DIRECT 0 /* Input DIRECT, Output DIRECT */
+#define DMA_GATHER_SCATTER 1
+#define FROM_DPTR 1
+
+/**
+ * Enumeration cpt_vf_int_vec_e
+ *
+ * CPT VF MSI-X Vector Enumeration
+ * Enumerates the MSI-X interrupt vectors.
+ */
+enum cpt_vf_int_vec_e {
+ CPT_VF_INT_VEC_E_MISC = 0x00,
+ CPT_VF_INT_VEC_E_DONE = 0x01
+};
+
+struct command_chunk {
+ u8 *head;
+ dma_addr_t dma_addr;
+ u32 size; /* Chunk size, max CPT_INST_CHUNK_MAX_SIZE */
+ struct hlist_node nextchunk;
+};
+
+struct command_queue {
+ spinlock_t lock; /* command queue lock */
+ u32 idx; /* Command queue host write idx */
+ u32 nchunks; /* Number of command chunks */
+ struct command_chunk *qhead; /* Command queue head, instructions
+ * are inserted here
+ */
+ struct hlist_head chead;
+};
+
+struct command_qinfo {
+ u32 cmd_size;
+ u32 qchunksize; /* Command queue chunk size */
+ struct command_queue queue[CPT_NUM_QS_PER_VF];
+};
+
+struct pending_entry {
+ u8 busy; /* Entry status (free/busy) */
+
+ volatile u64 *completion_addr; /* Completion address */
+ void *post_arg;
+ void (*callback)(int, void *); /* Kernel ASYNC request callabck */
+ void *callback_arg; /* Kernel ASYNC request callabck arg */
+};
+
+struct pending_queue {
+ struct pending_entry *head; /* head of the queue */
+ u32 front; /* Process work from here */
+ u32 rear; /* Append new work here */
+ atomic64_t pending_count;
+ spinlock_t lock; /* Queue lock */
+};
+
+struct pending_qinfo {
+ u32 nr_queues; /* Number of queues supported */
+ u32 qlen; /* Queue length */
+ struct pending_queue queue[CPT_NUM_QS_PER_VF];
+};
+
+#define for_each_pending_queue(qinfo, q, i) \
+ for (i = 0, q = &qinfo->queue[i]; i < qinfo->nr_queues; i++, \
+ q = &qinfo->queue[i])
+
+struct cpt_vf {
+ u16 flags; /* Flags to hold device status bits */
+ u8 vfid; /* Device Index 0...CPT_MAX_VF_NUM */
+ u8 vftype; /* VF type of SE_TYPE(1) or AE_TYPE(1) */
+ u8 vfgrp; /* VF group (0 - 8) */
+ u8 node; /* Operating node: Bits (46:44) in BAR0 address */
+ u8 priority; /* VF priority ring: 1-High proirity round
+ * robin ring;0-Low priority round robin ring;
+ */
+ struct pci_dev *pdev; /* pci device handle */
+ void __iomem *reg_base; /* Register start address */
+ void *wqe_info; /* BH worker info */
+ /* MSI-X */
+ cpumask_var_t affinity_mask[CPT_VF_MSIX_VECTORS];
+ /* Command and Pending queues */
+ u32 qsize;
+ u32 nr_queues;
+ struct command_qinfo cqinfo; /* Command queue information */
+ struct pending_qinfo pqinfo; /* Pending queue information */
+ /* VF-PF mailbox communication */
+ bool pf_acked;
+ bool pf_nacked;
+};
+
+int cptvf_send_vf_up(struct cpt_vf *cptvf);
+int cptvf_send_vf_down(struct cpt_vf *cptvf);
+int cptvf_send_vf_to_grp_msg(struct cpt_vf *cptvf);
+int cptvf_send_vf_priority_msg(struct cpt_vf *cptvf);
+int cptvf_send_vq_size_msg(struct cpt_vf *cptvf);
+int cptvf_check_pf_ready(struct cpt_vf *cptvf);
+void cptvf_handle_mbox_intr(struct cpt_vf *cptvf);
+void cvm_crypto_exit(void);
+int cvm_crypto_init(struct cpt_vf *cptvf);
+void vq_post_process(struct cpt_vf *cptvf, u32 qno);
+void cptvf_write_vq_doorbell(struct cpt_vf *cptvf, u32 val);
+#endif /* __CPTVF_H */