/* SPDX-License-Identifier: GPL-2.0-only */
/*
* QLogic iSCSI Offload Driver
* Copyright (c) 2016 Cavium Inc.
*/
#ifndef _QEDI_H_
#define _QEDI_H_
#define __PREVENT_QED_HSI__
#include <scsi/scsi_transport_iscsi.h>
#include <scsi/libiscsi.h>
#include <scsi/scsi_host.h>
#include <linux/uio_driver.h>
#include "qedi_hsi.h"
#include <linux/qed/qed_if.h>
#include "qedi_dbg.h"
#include <linux/qed/qed_iscsi_if.h>
#include <linux/qed/qed_ll2_if.h>
#include "qedi_version.h"
#include "qedi_nvm_iscsi_cfg.h"
#define QEDI_MODULE_NAME "qedi"
struct qedi_endpoint;
#ifndef GET_FIELD2
#define GET_FIELD2(value, name) \
(((value) & (name ## _MASK)) >> (name ## _OFFSET))
#endif
/*
* PCI function probe defines
*/
#define QEDI_MODE_NORMAL 0
#define QEDI_MODE_RECOVERY 1
#define QEDI_MODE_SHUTDOWN 2
#define ISCSI_WQE_SET_PTU_INVALIDATE 1
#define QEDI_MAX_ISCSI_TASK 4096
#define QEDI_MAX_TASK_NUM 0x0FFF
#define QEDI_MAX_ISCSI_CONNS_PER_HBA 1024
#define QEDI_ISCSI_MAX_BDS_PER_CMD 255 /* Firmware max BDs is 255 */
#define MAX_OUTSTANDING_TASKS_PER_CON 1024
#define QEDI_MAX_BD_LEN 0xffff
#define QEDI_BD_SPLIT_SZ 0x1000
#define QEDI_PAGE_SIZE 4096
#define QEDI_FAST_SGE_COUNT 4
/* MAX Length for cached SGL */
#define MAX_SGLEN_FOR_CACHESGL ((1U << 16) - 1)
#define MIN_NUM_CPUS_MSIX(x) min_t(u32, x->dev_info.num_cqs, \
num_online_cpus())
#define QEDI_LOCAL_PORT_MIN 60000
#define QEDI_LOCAL_PORT_MAX 61024
#define QEDI_LOCAL_PORT_RANGE (QEDI_LOCAL_PORT_MAX - QEDI_LOCAL_PORT_MIN)
#define QEDI_LOCAL_PORT_INVALID 0xffff
#define TX_RX_RING 16
#define RX_RING (TX_RX_RING - 1)
#define QEDI_PAGE_ALIGN(addr) ALIGN(addr, QEDI_PAGE_SIZE)
#define QEDI_PAGE_MASK (~((QEDI_PAGE_SIZE) - 1))
#define QEDI_HW_DMA_BOUNDARY 0xfff
#define QEDI_PATH_HANDLE 0xFE0000000UL
enum qedi_nvm_tgts {
QEDI_NVM_TGT_PRI,
QEDI_NVM_TGT_SEC,
};
struct qedi_nvm_iscsi_image {
struct nvm_iscsi_cfg iscsi_cfg;
u32 crc;
};
struct qedi_uio_ctrl {
/* meta data */
u32 uio_hsi_version;
/* user writes */
u32 host_tx_prod;
u32 host_rx_cons;
u32 host_rx_bd_cons;
u32 host_tx_pkt_len;
u32 host_rx_cons_cnt;
/* driver writes */
u32 hw_tx_cons;
u32 hw_rx_prod;
u32 hw_rx_bd_prod;
u32 hw_rx_prod_cnt;
/* other */
u8 mac_addr[6];
u8 reserve[2];
};
struct qedi_rx_bd {
u32 rx_pkt_index;
u32 rx_pkt_len;
u16 vlan_id;
};
#define QEDI_RX_DESC_CNT (QEDI_PAGE_SIZE / sizeof(struct qedi_rx_bd))
#define QEDI_MAX_RX_DESC_CNT (QEDI_RX_DESC_CNT - 1)
#define QEDI_NUM_RX_BD (QEDI_RX_DESC_CNT * 1)
#define QEDI_MAX_RX_BD (QEDI_NUM_RX_BD - 1)
#define QEDI_NEXT_RX_IDX(x) ((((x) & (QEDI_MAX_RX_DESC_CNT)) == \
(QEDI_MAX_RX_DESC_CNT - 1)) ? \
(x) + 2 : (x) + 1)
struct qedi_uio_dev {
struct uio_info qedi_uinfo;
u32 uio_dev;
struct list_head list;
u32 ll2_ring_size;
void *ll2_ring;
u32 ll2_buf_size;
void *ll2_buf;
void *rx_pkt;
void *tx_pkt;
struct qedi_ctx *qedi;
struct pci_dev *pdev;
void *uctrl;
};
/* List to maintain the skb pointers */
struct skb_work_list {
struct list_head list;
struct sk_buff *skb;
u16 vlan_id;
};
/* Queue sizes in number of elements */
#define QEDI_SQ_SIZE MAX_OUTSTANDING_TASKS_PER_CON
#define QEDI_CQ_SIZE 2048
#define QEDI_CMDQ_SIZE QEDI_MAX_ISCSI_TASK
#define QEDI_PROTO_CQ_PROD_IDX 0
struct qedi_glbl_q_params {
u64 hw_p_cq; /* Completion queue PBL */
u64 hw_p_rq; /* Request queue PBL */
u64 hw_p_cmdq; /* Command queue PBL */
};
struct global_queue {
union iscsi_cqe *cq;
dma_addr_t cq_dma;
u32 cq_mem_size;
u32 cq_cons_idx; /* Completion queue consumer index */
void *cq_pbl;
dma_addr_t cq_pbl_dma;
u32 cq_pbl_size;
};
struct qedi_fastpath {
struct qed_sb_info *sb_info;
u16 sb_id;
#define QEDI_NAME_SIZE 16
char name[QEDI_NAME_SIZE];
struct qedi_ctx *qedi;
};
/* Used to pass fastpath information needed to process CQEs */
struct qedi_io_work {
struct list_head list;
struct iscsi_cqe_solicited cqe;
u16 que_idx;
};
/**
* struct iscsi_cid_queue - Per adapter iscsi cid queue
*
* @cid_que_base: queue base memory
* @cid_que: queue memory pointer
* @cid_q_prod_idx: produce index
* @cid_q_cons_idx: consumer index
* @cid_q_max_idx: max index. used to detect wrap around condition
* @cid_free_cnt: queue size
* @conn_cid_tbl: iscsi cid to conn structure mapping table
*
* Per adapter iSCSI CID Queue
*/
struct iscsi_cid_queue {
void *cid_que_base;
u32 *cid_que;
u32 cid_q_prod_idx;
u32 cid_q_cons_idx;
u32 cid_q_max_idx;
u32 cid_free_cnt;
struct qedi_conn **conn_cid_tbl;
};
struct qedi_portid_tbl {
spinlock_t lock; /* Port id lock */
u16 start;
u16 max;
u16 next;
unsigned long *table;
};
struct qedi_itt_map {
__le32 itt;
struct qedi_cmd *p_cmd;
};
/* I/O tracing entry */
#define QEDI_IO_TRACE_SIZE 2048
struct qedi_io_log {
#define QEDI_IO_TRACE_REQ 0
#define QEDI_IO_TRACE_RSP 1
u8 direction;
u16 task_id;
u32 cid;
u32 port_id; /* Remote port fabric ID */
int lun;
u8 op; /* SCSI CDB */
u8 lba[4];
unsigned int bufflen; /* SCSI buffer length */
unsigned int sg_count; /* Number of SG elements */
u8 fast_sgs; /* number of fast sgls */
u8 slow_sgs; /* number of slow sgls */
u8 cached_sgs; /* number of cached sgls */
int result; /* Result passed back to mid-layer */
unsigned long jiffies; /* Time stamp when I/O logged */
int refcount; /* Reference count for task id */
unsigned int blk_req_cpu; /* CPU that the task is queued on by
* blk layer
*/
unsigned int req_cpu; /* CPU that the task is queued on */
unsigned int intr_cpu; /* Interrupt CPU that the task is received on */
unsigned int blk_rsp_cpu;/* CPU that task is actually processed and
* returned to blk layer
*/
bool cached_sge;
bool slow_sge;
bool fast_sge;
};
/* Number of entries in BDQ */
#define QEDI_BDQ_NUM 256
#define QEDI_BDQ_BUF_SIZE 256
/* DMA coherent buffers for BDQ */
struct qedi_bdq_buf {
void *buf_addr;
dma_addr_t buf_dma;
};
/* Main port level struct */
struct qedi_ctx {
struct qedi_dbg_ctx dbg_ctx;
struct Scsi_Host *shost;
struct pci_dev *pdev;
struct qed_dev *cdev;
struct qed_dev_iscsi_info dev_info;
struct qed_int_info int_info;
struct qedi_glbl_q_params *p_cpuq;
struct global_queue **global_queues;
/* uio declaration */
struct qedi_uio_dev *udev;
struct list_head ll2_skb_list;
spinlock_t ll2_lock; /* Light L2 lock */
spinlock_t hba_lock; /* per port lock */
struct task_struct *ll2_recv_thread;
unsigned long qedi_err_flags;
#define QEDI_ERR_ATTN_CLR_EN 0
#define QEDI_ERR_IS_RECOVERABLE 2
#define QEDI_ERR_OVERRIDE_EN 31
unsigned long flags;
#define UIO_DEV_OPENED 1
#define QEDI_IOTHREAD_WAKE 2
#define QEDI_IN_RECOVERY 5
#define QEDI_IN_OFFLINE 6
#define QEDI_IN_SHUTDOWN 7
#define QEDI_BLOCK_IO 8
u8 mac[ETH_ALEN];
u32 src_ip[4];
u8 ip_type;
/* Physical address of above array */
dma_addr_t hw_p_cpuq;
struct qedi_bdq_buf bdq[QEDI_BDQ_NUM];
void *bdq_pbl;
dma_addr_t bdq_pbl_dma;
size_t bdq_pbl_mem_size;
void *bdq_pbl_list;
dma_addr_t bdq_pbl_list_dma;
u8 bdq_pbl_list_num_entries;
struct qedi_nvm_iscsi_image *iscsi_image;
dma_addr_t nvm_buf_dma;
void __iomem *bdq_primary_prod;
void __iomem *bdq_secondary_prod;
u16 bdq_prod_idx;
u16 rq_num_entries;
u32 max_sqes;
u8 num_queues;
u32 max_active_conns;
s32 msix_count;
struct iscsi_cid_queue cid_que;
struct qedi_endpoint **ep_tbl;
struct qedi_portid_tbl lcl_port_tbl;
/* Rx fast path intr context */
struct qed_sb_info *sb_array;
struct qedi_fastpath *fp_array;
struct qed_iscsi_tid tasks;
#define QEDI_LINK_DOWN 0
#define QEDI_LINK_UP 1
atomic_t link_state;
#define QEDI_RESERVE_TASK_ID 0
#define MAX_ISCSI_TASK_ENTRIES 4096
#define QEDI_INVALID_TASK_ID (MAX_ISCSI_TASK_ENTRIES + 1)
unsigned long task_idx_map[MAX_ISCSI_TASK_ENTRIES / BITS_PER_LONG];
struct qedi_itt_map *itt_map;
u16 tid_reuse_count[QEDI_MAX_ISCSI_TASK];
struct qed_pf_params pf_params;
struct workqueue_struct *tmf_thread;
struct workqueue_struct *offload_thread;
u16 ll2_mtu;
struct workqueue_struct *dpc_wq;
struct delayed_work recovery_work;
struct delayed_work board_disable_work;
spinlock_t task_idx_lock; /* To protect gbl context */
s32 last_tidx_alloc;
s32 last_tidx_clear;
struct qedi_io_log io_trace_buf[QEDI_IO_TRACE_SIZE];
spinlock_t io_trace_lock; /* prtect trace Log buf */
u16 io_trace_idx;
unsigned int intr_cpu;
u32 cached_sgls;
bool use_cached_sge;
u32 slow_sgls;
bool use_slow_sge;
u32 fast_sgls;
bool use_fast_sge;
atomic_t num_offloads;
#define SYSFS_FLAG_FW_SEL_BOOT 2
#define IPV6_LEN 41
#define IPV4_LEN 17
struct iscsi_boot_kset *boot_kset;
/* Used for iscsi statistics */
struct mutex stats_lock;
};
struct qedi_work {
struct list_head list;
struct qedi_ctx *qedi;
union iscsi_cqe cqe;
u16 que_idx;
bool is_solicited;
};
struct qedi_percpu_s {
struct task_struct *iothread;
struct list_head work_list;
spinlock_t p_work_lock; /* Per cpu worker lock */
};
static inline void *qedi_get_task_mem(struct qed_iscsi_tid *info, u32 tid)
{
return (info->blocks[tid / info->num_tids_per_block] +
(tid % info->num_tids_per_block) * info->size);
}
#define QEDI_U64_HI(val) ((u32)(((u64)(val)) >> 32))
#define QEDI_U64_LO(val) ((u32)(((u64)(val)) & 0xffffffff))
#endif /* _QEDI_H_ */
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