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/*
* Copyright (C) 2016 Cavium, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License
* as published by the Free Software Foundation.
*/
#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 */
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