/* * This file is part of the Chelsio T4 Ethernet driver for Linux. * * Copyright (c) 2003-2010 Chelsio Communications, Inc. All rights reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the * OpenIB.org BSD license below: * * Redistribution and use in source and binary forms, with or * without modification, are permitted provided that the following * conditions are met: * * - Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * * - Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #ifndef __CXGB4_OFLD_H #define __CXGB4_OFLD_H #include #include #include #include /* CPL message priority levels */ enum { CPL_PRIORITY_DATA = 0, /* data messages */ CPL_PRIORITY_SETUP = 1, /* connection setup messages */ CPL_PRIORITY_TEARDOWN = 0, /* connection teardown messages */ CPL_PRIORITY_LISTEN = 1, /* listen start/stop messages */ CPL_PRIORITY_ACK = 1, /* RX ACK messages */ CPL_PRIORITY_CONTROL = 1 /* control messages */ }; #define INIT_TP_WR(w, tid) do { \ (w)->wr.wr_hi = htonl(FW_WR_OP(FW_TP_WR) | \ FW_WR_IMMDLEN(sizeof(*w) - sizeof(w->wr))); \ (w)->wr.wr_mid = htonl(FW_WR_LEN16(DIV_ROUND_UP(sizeof(*w), 16)) | \ FW_WR_FLOWID(tid)); \ (w)->wr.wr_lo = cpu_to_be64(0); \ } while (0) #define INIT_TP_WR_CPL(w, cpl, tid) do { \ INIT_TP_WR(w, tid); \ OPCODE_TID(w) = htonl(MK_OPCODE_TID(cpl, tid)); \ } while (0) #define INIT_ULPTX_WR(w, wrlen, atomic, tid) do { \ (w)->wr.wr_hi = htonl(FW_WR_OP(FW_ULPTX_WR) | FW_WR_ATOMIC(atomic)); \ (w)->wr.wr_mid = htonl(FW_WR_LEN16(DIV_ROUND_UP(wrlen, 16)) | \ FW_WR_FLOWID(tid)); \ (w)->wr.wr_lo = cpu_to_be64(0); \ } while (0) /* Special asynchronous notification message */ #define CXGB4_MSG_AN ((void *)1) struct serv_entry { void *data; }; union aopen_entry { void *data; union aopen_entry *next; }; /* * Holds the size, base address, free list start, etc of the TID, server TID, * and active-open TID tables. The tables themselves are allocated dynamically. */ struct tid_info { void **tid_tab; unsigned int ntids; struct serv_entry *stid_tab; unsigned long *stid_bmap; unsigned int nstids; unsigned int stid_base; union aopen_entry *atid_tab; unsigned int natids; unsigned int nftids; unsigned int ftid_base; unsigned int aftid_base; unsigned int aftid_end; /* Server filter region */ unsigned int sftid_base; unsigned int nsftids; spinlock_t atid_lock ____cacheline_aligned_in_smp; union aopen_entry *afree; unsigned int atids_in_use; spinlock_t stid_lock; unsigned int stids_in_use; atomic_t tids_in_use; }; static inline void *lookup_tid(const struct tid_info *t, unsigned int tid) { return tid < t->ntids ? t->tid_tab[tid] : NULL; } static inline void *lookup_atid(const struct tid_info *t, unsigned int atid) { return atid < t->natids ? t->atid_tab[atid].data : NULL; } static inline void *lookup_stid(const struct tid_info *t, unsigned int stid) { stid -= t->stid_base; return stid < t->nstids ? t->stid_tab[stid].data : NULL; } static inline void cxgb4_insert_tid(struct tid_info *t, void *data, unsigned int tid) { t->tid_tab[tid] = data; atomic_inc(&t->tids_in_use); } int cxgb4_alloc_atid(struct tid_info *t, void *data); int cxgb4_alloc_stid(struct tid_info *t, int family, void *data); void cxgb4_free_atid(struct tid_info *t, unsigned int atid); void cxgb4_free_stid(struct tid_info *t, unsigned int stid, int family); void cxgb4_remove_tid(struct tid_info *t, unsigned int qid, unsigned int tid); struct in6_addr; int cxgb4_create_server(const struct net_device *dev, unsigned int stid, __be32 sip, __be16 sport, unsigned int queue); static inline void set_wr_txq(struct sk_buff *skb, int prio, int queue) { skb_set_queue_mapping(skb, (queue << 1) | prio); } enum cxgb4_uld { CXGB4_ULD_RDMA, CXGB4_ULD_ISCSI, CXGB4_ULD_MAX }; enum cxgb4_state { CXGB4_STATE_UP, CXGB4_STATE_START_RECOVERY, CXGB4_STATE_DOWN, CXGB4_STATE_DETACH }; enum cxgb4_control { CXGB4_CONTROL_DB_FULL, CXGB4_CONTROL_DB_EMPTY, CXGB4_CONTROL_DB_DROP, }; struct pci_dev; struct l2t_data; struct net_device; struct pkt_gl; struct tp_tcp_stats; struct cxgb4_range { unsigned int start; unsigned int size; }; struct cxgb4_virt_res { /* virtualized HW resources */ struct cxgb4_range ddp; struct cxgb4_range iscsi; struct cxgb4_range stag; struct cxgb4_range rq; struct cxgb4_range pbl; struct cxgb4_range qp; struct cxgb4_range cq; struct cxgb4_range ocq; }; #define OCQ_WIN_OFFSET(pdev, vres) \ (pci_resource_len((pdev), 2) - roundup_pow_of_two((vres)->ocq.size)) /* * Block of information the LLD provides to ULDs attaching to a device. */ struct cxgb4_lld_info { struct pci_dev *pdev; /* associated PCI device */ struct l2t_data *l2t; /* L2 table */ struct tid_info *tids; /* TID table */ struct net_device **ports; /* device ports */ const struct cxgb4_virt_res *vr; /* assorted HW resources */ const unsigned short *mtus; /* MTU table */ const unsigned short *rxq_ids; /* the ULD's Rx queue ids */ unsigned short nrxq; /* # of Rx queues */ unsigned short ntxq; /* # of Tx queues */ unsigned char nchan:4; /* # of channels */ unsigned char nports:4; /* # of ports */ unsigned char wr_cred; /* WR 16-byte credits */ unsigned char adapter_type; /* type of adapter */ unsigned char fw_api_ver; /* FW API version */ unsigned int fw_vers; /* FW version */ unsigned int iscsi_iolen; /* iSCSI max I/O length */ unsigned short udb_density; /* # of user DB/page */ unsigned short ucq_density; /* # of user CQs/page */ void __iomem *gts_reg; /* address of GTS register */ void __iomem *db_reg; /* address of kernel doorbell */ int dbfifo_int_thresh; /* doorbell fifo int threshold */ }; struct cxgb4_uld_info { const char *name; void *(*add)(const struct cxgb4_lld_info *p); int (*rx_handler)(void *handle, const __be64 *rsp, const struct pkt_gl *gl); int (*state_change)(void *handle, enum cxgb4_state new_state); int (*control)(void *handle, enum cxgb4_control control, ...); }; int cxgb4_register_uld(enum cxgb4_uld type, const struct cxgb4_uld_info *p); int cxgb4_unregister_uld(enum cxgb4_uld type); int cxgb4_ofld_send(struct net_device *dev, struct sk_buff *skb); unsigned int cxgb4_dbfifo_count(const struct net_device *dev, int lpfifo); unsigned int cxgb4_port_chan(const struct net_device *dev); unsigned int cxgb4_port_viid(const struct net_device *dev); unsigned int cxgb4_port_idx(const struct net_device *dev); unsigned int cxgb4_best_mtu(const unsigned short *mtus, unsigned short mtu, unsigned int *idx); void cxgb4_get_tcp_stats(struct pci_dev *pdev, struct tp_tcp_stats *v4, struct tp_tcp_stats *v6); void cxgb4_iscsi_init(struct net_device *dev, unsigned int tag_mask, const unsigned int *pgsz_order); struct sk_buff *cxgb4_pktgl_to_skb(const struct pkt_gl *gl, unsigned int skb_len, unsigned int pull_len); int cxgb4_sync_txq_pidx(struct net_device *dev, u16 qid, u16 pidx, u16 size); int cxgb4_flush_eq_cache(struct net_device *dev); #endif /* !__CXGB4_OFLD_H */