/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NITROX_DEV_H
#define __NITROX_DEV_H
#include <linux/dma-mapping.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/if .h>
#define VERSION_LEN 32
/* Maximum queues in PF mode */
#define MAX_PF_QUEUES 64
/* Maximum device queues */
#define MAX_DEV_QUEUES (MAX_PF_QUEUES)
/* Maximum UCD Blocks */
#define CNN55XX_MAX_UCD_BLOCKS 8
/**
* struct nitrox_cmdq - NITROX command queue
* @ cmd_qlock : command queue lock
* @ resp_qlock : response queue lock
* @ backlog_qlock : backlog queue lock
* @ ndev : NITROX device
* @ response_head : submitted request list
* @ backlog_head : backlog queue
* @ dbell_csr_addr : doorbell register address for this queue
* @ compl_cnt_csr_addr : completion count register address of the slc port
* @ base : command queue base address
* @ dma : dma address of the base
* @ pending_count : request pending at device
* @ backlog_count : backlog request count
* @ write_idx : next write index for the command
* @ instr_size : command size
* @ qno : command queue number
* @ qsize : command queue size
* @ unalign_base : unaligned base address
* @ unalign_dma : unaligned dma address
*/
struct nitrox_cmdq {
spinlock_t cmd_qlock;
spinlock_t resp_qlock;
spinlock_t backlog_qlock;
struct nitrox_device *ndev;
struct list_head response_head;
struct list_head backlog_head;
u8 __iomem *dbell_csr_addr;
u8 __iomem *compl_cnt_csr_addr;
u8 *base;
dma_addr_t dma;
struct work_struct backlog_qflush;
atomic_t pending_count;
atomic_t backlog_count;
int write_idx;
u8 instr_size;
u8 qno;
u32 qsize;
u8 *unalign_base;
dma_addr_t unalign_dma;
};
/**
* struct nitrox_hw - NITROX hardware information
* @ partname : partname ex : CNN55xxx - xxx
* @ fw_name : firmware version
* @ freq : NITROX frequency
* @ vendor_id : vendor ID
* @ device_id : device ID
* @ revision_id : revision ID
* @ se_cores : number of symmetric cores
* @ ae_cores : number of asymmetric cores
* @ zip_cores : number of zip cores
*/
struct nitrox_hw {
char partname[IFNAMSIZ * 2 ];
char fw_name[CNN55XX_MAX_UCD_BLOCKS][VERSION_LEN];
int freq;
u16 vendor_id;
u16 device_id;
u8 revision_id;
u8 se_cores;
u8 ae_cores;
u8 zip_cores;
};
struct nitrox_stats {
atomic64_t posted;
atomic64_t completed;
atomic64_t dropped;
};
#define IRQ_NAMESZ 32
struct nitrox_q_vector {
char name[IRQ_NAMESZ];
bool valid;
int ring;
struct tasklet_struct resp_tasklet;
union {
struct nitrox_cmdq *cmdq;
struct nitrox_device *ndev;
};
};
enum mcode_type {
MCODE_TYPE_INVALID,
MCODE_TYPE_AE,
MCODE_TYPE_SE_SSL,
MCODE_TYPE_SE_IPSEC,
};
/**
* mbox_msg - Mailbox message data
* @ type : message type
* @ opcode : message opcode
* @ data : message data
*/
union mbox_msg {
u64 value;
struct {
u64 type: 2 ;
u64 opcode: 6 ;
u64 data: 58 ;
};
struct {
u64 type: 2 ;
u64 opcode: 6 ;
u64 chipid: 8 ;
u64 vfid: 8 ;
} id;
struct {
u64 type: 2 ;
u64 opcode: 6 ;
u64 count: 4 ;
u64 info: 40 ;
u64 next_se_grp: 3 ;
u64 next_ae_grp: 3 ;
} mcode_info;
};
/**
* nitrox_vfdev - NITROX VF device instance in PF
* @ state : VF device state
* @ vfno : VF number
* @ nr_queues : number of queues enabled in VF
* @ ring : ring to communicate with VF
* @ msg : Mailbox message data from VF
* @ mbx_resp : Mailbox counters
*/
struct nitrox_vfdev {
atomic_t state;
int vfno;
int nr_queues;
int ring;
union mbox_msg msg;
atomic64_t mbx_resp;
};
/**
* struct nitrox_iov - SR - IOV information
* @ num_vfs : number of VF ( s ) enabled
* @ max_vf_queues : Maximum number of queues allowed for VF
* @ vfdev : VF ( s ) devices
* @ pf2vf_wq : workqueue for PF2VF communication
* @ msix : MSI - X entry for PF in SR - IOV case
*/
struct nitrox_iov {
int num_vfs;
int max_vf_queues;
struct nitrox_vfdev *vfdev;
struct workqueue_struct *pf2vf_wq;
struct msix_entry msix;
};
/*
* NITROX Device states
*/
enum ndev_state {
__NDEV_NOT_READY,
__NDEV_READY,
__NDEV_IN_RESET,
};
/* NITROX support modes for VF(s) */
enum vf_mode {
__NDEV_MODE_PF,
__NDEV_MODE_VF16,
__NDEV_MODE_VF32,
__NDEV_MODE_VF64,
__NDEV_MODE_VF128,
};
#define __NDEV_SRIOV_BIT 0
/* command queue size */
#define DEFAULT_CMD_QLEN 2048
/* command timeout in milliseconds */
#define CMD_TIMEOUT 2000
#define DEV(ndev) ((struct device *)(&(ndev)->pdev->dev))
#define NITROX_CSR_ADDR(ndev, offset) \
((ndev)->bar_addr + (offset))
/**
* struct nitrox_device - NITROX Device Information .
* @ list : pointer to linked list of devices
* @ bar_addr : iomap address
* @ pdev : PCI device information
* @ state : NITROX device state
* @ flags : flags to indicate device the features
* @ timeout : Request timeout in jiffies
* @ refcnt : Device usage count
* @ idx : device index ( 0 . . N )
* @ node : NUMA node id attached
* @ qlen : Command queue length
* @ nr_queues : Number of command queues
* @ mode : Device mode PF / VF
* @ ctx_pool : DMA pool for crypto context
* @ pkt_inq : Packet input rings
* @ aqmq : AQM command queues
* @ qvec : MSI - X queue vectors information
* @ iov : SR - IOV informatin
* @ num_vecs : number of MSI - X vectors
* @ stats : request statistics
* @ hw : hardware information
* @ debugfs_dir : debugfs directory
*/
struct nitrox_device {
struct list_head list;
u8 __iomem *bar_addr;
struct pci_dev *pdev;
atomic_t state;
unsigned long flags;
unsigned long timeout;
refcount_t refcnt;
u8 idx;
int node;
u16 qlen;
u16 nr_queues;
enum vf_mode mode;
struct dma_pool *ctx_pool;
struct nitrox_cmdq *pkt_inq;
struct nitrox_cmdq *aqmq[MAX_DEV_QUEUES] ____cacheline_aligned_in_smp;
struct nitrox_q_vector *qvec;
struct nitrox_iov iov;
int num_vecs;
struct nitrox_stats stats;
struct nitrox_hw hw;
#if IS_ENABLED(CONFIG_DEBUG_FS)
struct dentry *debugfs_dir;
#endif
};
/**
* nitrox_read_csr - Read from device register
* @ ndev : NITROX device
* @ offset : offset of the register to read
*
* Returns : value read
*/
static inline u64 nitrox_read_csr(struct nitrox_device *ndev, u64 offset)
{
return readq(ndev->bar_addr + offset);
}
/**
* nitrox_write_csr - Write to device register
* @ ndev : NITROX device
* @ offset : offset of the register to write
* @ value : value to write
*/
static inline void nitrox_write_csr(struct nitrox_device *ndev, u64 offset,
u64 value)
{
writeq(value, (ndev->bar_addr + offset));
}
static inline bool nitrox_ready(struct nitrox_device *ndev)
{
return atomic_read(&ndev->state) == __NDEV_READY;
}
static inline bool nitrox_vfdev_ready(struct nitrox_vfdev *vfdev)
{
return atomic_read(&vfdev->state) == __NDEV_READY;
}
#endif /* __NITROX_DEV_H */
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(vorverarbeitet am 2026-09-29)
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