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linux/drivers/net/cnic_if.h
Michael Chan a463696039 [SCSI] cnic: Add new Broadcom CNIC driver. 
The CNIC driver controls BNX2 hardware rings and resources used by
iSCSI.  Most hardware resources for iSCSI are separate from those
used for ethernet networking.

iSCSI uses a separate MAC address and IP address.  The CNIC driver
creates a UIO interface to handle the non-offloaded packets such as
ARP, etc in userspace.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-06-09 10:22:42 -05:00

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/* cnic_if.h: Broadcom CNIC core network driver.
*
* Copyright (c) 2006 Broadcom Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation.
*
*/
#ifndef CNIC_IF_H
#define CNIC_IF_H
#define CNIC_MODULE_VERSION "2.0.0"
#define CNIC_MODULE_RELDATE "May 21, 2009"
#define CNIC_ULP_RDMA 0
#define CNIC_ULP_ISCSI 1
#define CNIC_ULP_L4 2
#define MAX_CNIC_ULP_TYPE_EXT 2
#define MAX_CNIC_ULP_TYPE 3
struct kwqe {
u32 kwqe_op_flag;
#define KWQE_OPCODE_MASK 0x00ff0000
#define KWQE_OPCODE_SHIFT 16
#define KWQE_FLAGS_LAYER_SHIFT 28
#define KWQE_OPCODE(x) ((x & KWQE_OPCODE_MASK) >> KWQE_OPCODE_SHIFT)
u32 kwqe_info0;
u32 kwqe_info1;
u32 kwqe_info2;
u32 kwqe_info3;
u32 kwqe_info4;
u32 kwqe_info5;
u32 kwqe_info6;
};
struct kwqe_16 {
u32 kwqe_info0;
u32 kwqe_info1;
u32 kwqe_info2;
u32 kwqe_info3;
};
struct kcqe {
u32 kcqe_info0;
u32 kcqe_info1;
u32 kcqe_info2;
u32 kcqe_info3;
u32 kcqe_info4;
u32 kcqe_info5;
u32 kcqe_info6;
u32 kcqe_op_flag;
#define KCQE_RAMROD_COMPLETION (0x1<<27) /* Everest */
#define KCQE_FLAGS_LAYER_MASK (0x7<<28)
#define KCQE_FLAGS_LAYER_MASK_MISC (0<<28)
#define KCQE_FLAGS_LAYER_MASK_L2 (2<<28)
#define KCQE_FLAGS_LAYER_MASK_L3 (3<<28)
#define KCQE_FLAGS_LAYER_MASK_L4 (4<<28)
#define KCQE_FLAGS_LAYER_MASK_L5_RDMA (5<<28)
#define KCQE_FLAGS_LAYER_MASK_L5_ISCSI (6<<28)
#define KCQE_FLAGS_NEXT (1<<31)
#define KCQE_FLAGS_OPCODE_MASK (0xff<<16)
#define KCQE_FLAGS_OPCODE_SHIFT (16)
#define KCQE_OPCODE(op) \
(((op) & KCQE_FLAGS_OPCODE_MASK) >> KCQE_FLAGS_OPCODE_SHIFT)
};
#define MAX_CNIC_CTL_DATA 64
#define MAX_DRV_CTL_DATA 64
#define CNIC_CTL_STOP_CMD 1
#define CNIC_CTL_START_CMD 2
#define CNIC_CTL_COMPLETION_CMD 3
#define DRV_CTL_IO_WR_CMD 0x101
#define DRV_CTL_IO_RD_CMD 0x102
#define DRV_CTL_CTX_WR_CMD 0x103
#define DRV_CTL_CTXTBL_WR_CMD 0x104
#define DRV_CTL_COMPLETION_CMD 0x105
struct cnic_ctl_completion {
u32 cid;
};
struct drv_ctl_completion {
u32 comp_count;
};
struct cnic_ctl_info {
int cmd;
union {
struct cnic_ctl_completion comp;
char bytes[MAX_CNIC_CTL_DATA];
} data;
};
struct drv_ctl_io {
u32 cid_addr;
u32 offset;
u32 data;
dma_addr_t dma_addr;
};
struct drv_ctl_info {
int cmd;
union {
struct drv_ctl_completion comp;
struct drv_ctl_io io;
char bytes[MAX_DRV_CTL_DATA];
} data;
};
struct cnic_ops {
struct module *cnic_owner;
/* Calls to these functions are protected by RCU. When
* unregistering, we wait for any calls to complete before
* continuing.
*/
int (*cnic_handler)(void *, void *);
int (*cnic_ctl)(void *, struct cnic_ctl_info *);
};
#define MAX_CNIC_VEC 8
struct cnic_irq {
unsigned int vector;
void *status_blk;
u32 status_blk_num;
u32 irq_flags;
#define CNIC_IRQ_FL_MSIX 0x00000001
};
struct cnic_eth_dev {
struct module *drv_owner;
u32 drv_state;
#define CNIC_DRV_STATE_REGD 0x00000001
#define CNIC_DRV_STATE_USING_MSIX 0x00000002
u32 chip_id;
u32 max_kwqe_pending;
struct pci_dev *pdev;
void __iomem *io_base;
u32 ctx_tbl_offset;
u32 ctx_tbl_len;
int ctx_blk_size;
u32 starting_cid;
u32 max_iscsi_conn;
u32 max_fcoe_conn;
u32 max_rdma_conn;
u32 reserved0[2];
int num_irq;
struct cnic_irq irq_arr[MAX_CNIC_VEC];
int (*drv_register_cnic)(struct net_device *,
struct cnic_ops *, void *);
int (*drv_unregister_cnic)(struct net_device *);
int (*drv_submit_kwqes_32)(struct net_device *,
struct kwqe *[], u32);
int (*drv_submit_kwqes_16)(struct net_device *,
struct kwqe_16 *[], u32);
int (*drv_ctl)(struct net_device *, struct drv_ctl_info *);
unsigned long reserved1[2];
};
struct cnic_sockaddr {
union {
struct sockaddr_in v4;
struct sockaddr_in6 v6;
} local;
union {
struct sockaddr_in v4;
struct sockaddr_in6 v6;
} remote;
};
struct cnic_sock {
struct cnic_dev *dev;
void *context;
u32 src_ip[4];
u32 dst_ip[4];
u16 src_port;
u16 dst_port;
u16 vlan_id;
unsigned char old_ha[6];
unsigned char ha[6];
u32 mtu;
u32 cid;
u32 l5_cid;
u32 pg_cid;
int ulp_type;
u32 ka_timeout;
u32 ka_interval;
u8 ka_max_probe_count;
u8 tos;
u8 ttl;
u8 snd_seq_scale;
u32 rcv_buf;
u32 snd_buf;
u32 seed;
unsigned long tcp_flags;
#define SK_TCP_NO_DELAY_ACK 0x1
#define SK_TCP_KEEP_ALIVE 0x2
#define SK_TCP_NAGLE 0x4
#define SK_TCP_TIMESTAMP 0x8
#define SK_TCP_SACK 0x10
#define SK_TCP_SEG_SCALING 0x20
unsigned long flags;
#define SK_F_INUSE 0
#define SK_F_OFFLD_COMPLETE 1
#define SK_F_OFFLD_SCHED 2
#define SK_F_PG_OFFLD_COMPLETE 3
#define SK_F_CONNECT_START 4
#define SK_F_IPV6 5
#define SK_F_CLOSING 7
atomic_t ref_count;
u32 state;
struct kwqe kwqe1;
struct kwqe kwqe2;
struct kwqe kwqe3;
};
struct cnic_dev {
struct net_device *netdev;
struct pci_dev *pcidev;
void __iomem *regview;
struct list_head list;
int (*register_device)(struct cnic_dev *dev, int ulp_type,
void *ulp_ctx);
int (*unregister_device)(struct cnic_dev *dev, int ulp_type);
int (*submit_kwqes)(struct cnic_dev *dev, struct kwqe *wqes[],
u32 num_wqes);
int (*submit_kwqes_16)(struct cnic_dev *dev, struct kwqe_16 *wqes[],
u32 num_wqes);
int (*cm_create)(struct cnic_dev *, int, u32, u32, struct cnic_sock **,
void *);
int (*cm_destroy)(struct cnic_sock *);
int (*cm_connect)(struct cnic_sock *, struct cnic_sockaddr *);
int (*cm_abort)(struct cnic_sock *);
int (*cm_close)(struct cnic_sock *);
struct cnic_dev *(*cm_select_dev)(struct sockaddr_in *, int ulp_type);
int (*iscsi_nl_msg_recv)(struct cnic_dev *dev, u32 msg_type,
char *data, u16 data_size);
unsigned long flags;
#define CNIC_F_CNIC_UP 1
#define CNIC_F_BNX2_CLASS 3
#define CNIC_F_BNX2X_CLASS 4
atomic_t ref_count;
u8 mac_addr[6];
int max_iscsi_conn;
int max_fcoe_conn;
int max_rdma_conn;
void *cnic_priv;
};
#define CNIC_WR(dev, off, val) writel(val, dev->regview + off)
#define CNIC_WR16(dev, off, val) writew(val, dev->regview + off)
#define CNIC_WR8(dev, off, val) writeb(val, dev->regview + off)
#define CNIC_RD(dev, off) readl(dev->regview + off)
#define CNIC_RD16(dev, off) readw(dev->regview + off)
struct cnic_ulp_ops {
/* Calls to these functions are protected by RCU. When
* unregistering, we wait for any calls to complete before
* continuing.
*/
void (*cnic_init)(struct cnic_dev *dev);
void (*cnic_exit)(struct cnic_dev *dev);
void (*cnic_start)(void *ulp_ctx);
void (*cnic_stop)(void *ulp_ctx);
void (*indicate_kcqes)(void *ulp_ctx, struct kcqe *cqes[],
u32 num_cqes);
void (*indicate_netevent)(void *ulp_ctx, unsigned long event);
void (*cm_connect_complete)(struct cnic_sock *);
void (*cm_close_complete)(struct cnic_sock *);
void (*cm_abort_complete)(struct cnic_sock *);
void (*cm_remote_close)(struct cnic_sock *);
void (*cm_remote_abort)(struct cnic_sock *);
void (*iscsi_nl_send_msg)(struct cnic_dev *dev, u32 msg_type,
char *data, u16 data_size);
struct module *owner;
};
extern int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops);
extern int cnic_unregister_driver(int ulp_type);
#endif
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