314 lines
11 KiB
C
314 lines
11 KiB
C
/*
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* Copyright (c) 2003-2008 Chelsio, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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/* This file should not be included directly. Include common.h instead. */
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#ifndef __T3_ADAPTER_H__
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#define __T3_ADAPTER_H__
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#include <linux/pci.h>
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#include <linux/spinlock.h>
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#include <linux/interrupt.h>
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#include <linux/timer.h>
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#include <linux/cache.h>
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#include <linux/mutex.h>
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#include <linux/bitops.h>
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#include "t3cdev.h"
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#include <asm/io.h>
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struct vlan_group;
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struct adapter;
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struct sge_qset;
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enum { /* rx_offload flags */
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T3_RX_CSUM = 1 << 0,
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T3_LRO = 1 << 1,
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};
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struct port_info {
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struct adapter *adapter;
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struct vlan_group *vlan_grp;
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struct sge_qset *qs;
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u8 port_id;
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u8 rx_offload;
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u8 nqsets;
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u8 first_qset;
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struct cphy phy;
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struct cmac mac;
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struct link_config link_config;
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struct net_device_stats netstats;
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int activity;
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__be32 iscsi_ipv4addr;
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int link_fault; /* link fault was detected */
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};
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enum { /* adapter flags */
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FULL_INIT_DONE = (1 << 0),
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USING_MSI = (1 << 1),
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USING_MSIX = (1 << 2),
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QUEUES_BOUND = (1 << 3),
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TP_PARITY_INIT = (1 << 4),
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NAPI_INIT = (1 << 5),
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};
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struct fl_pg_chunk {
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struct page *page;
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void *va;
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unsigned int offset;
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u64 *p_cnt;
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DECLARE_PCI_UNMAP_ADDR(mapping);
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};
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struct rx_desc;
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struct rx_sw_desc;
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struct sge_fl { /* SGE per free-buffer list state */
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unsigned int buf_size; /* size of each Rx buffer */
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unsigned int credits; /* # of available Rx buffers */
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unsigned int pend_cred; /* new buffers since last FL DB ring */
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unsigned int size; /* capacity of free list */
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unsigned int cidx; /* consumer index */
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unsigned int pidx; /* producer index */
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unsigned int gen; /* free list generation */
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struct fl_pg_chunk pg_chunk;/* page chunk cache */
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unsigned int use_pages; /* whether FL uses pages or sk_buffs */
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unsigned int order; /* order of page allocations */
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unsigned int alloc_size; /* size of allocated buffer */
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struct rx_desc *desc; /* address of HW Rx descriptor ring */
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struct rx_sw_desc *sdesc; /* address of SW Rx descriptor ring */
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dma_addr_t phys_addr; /* physical address of HW ring start */
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unsigned int cntxt_id; /* SGE context id for the free list */
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unsigned long empty; /* # of times queue ran out of buffers */
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unsigned long alloc_failed; /* # of times buffer allocation failed */
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};
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/*
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* Bundle size for grouping offload RX packets for delivery to the stack.
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* Don't make this too big as we do prefetch on each packet in a bundle.
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*/
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# define RX_BUNDLE_SIZE 8
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struct rsp_desc;
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struct sge_rspq { /* state for an SGE response queue */
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unsigned int credits; /* # of pending response credits */
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unsigned int size; /* capacity of response queue */
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unsigned int cidx; /* consumer index */
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unsigned int gen; /* current generation bit */
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unsigned int polling; /* is the queue serviced through NAPI? */
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unsigned int holdoff_tmr; /* interrupt holdoff timer in 100ns */
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unsigned int next_holdoff; /* holdoff time for next interrupt */
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unsigned int rx_recycle_buf; /* whether recycling occurred
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within current sop-eop */
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struct rsp_desc *desc; /* address of HW response ring */
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dma_addr_t phys_addr; /* physical address of the ring */
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unsigned int cntxt_id; /* SGE context id for the response q */
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spinlock_t lock; /* guards response processing */
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struct sk_buff_head rx_queue; /* offload packet receive queue */
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struct sk_buff *pg_skb; /* used to build frag list in napi handler */
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unsigned long offload_pkts;
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unsigned long offload_bundles;
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unsigned long eth_pkts; /* # of ethernet packets */
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unsigned long pure_rsps; /* # of pure (non-data) responses */
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unsigned long imm_data; /* responses with immediate data */
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unsigned long rx_drops; /* # of packets dropped due to no mem */
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unsigned long async_notif; /* # of asynchronous notification events */
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unsigned long empty; /* # of times queue ran out of credits */
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unsigned long nomem; /* # of responses deferred due to no mem */
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unsigned long unhandled_irqs; /* # of spurious intrs */
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unsigned long starved;
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unsigned long restarted;
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};
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struct tx_desc;
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struct tx_sw_desc;
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struct sge_txq { /* state for an SGE Tx queue */
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unsigned long flags; /* HW DMA fetch status */
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unsigned int in_use; /* # of in-use Tx descriptors */
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unsigned int size; /* # of descriptors */
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unsigned int processed; /* total # of descs HW has processed */
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unsigned int cleaned; /* total # of descs SW has reclaimed */
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unsigned int stop_thres; /* SW TX queue suspend threshold */
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unsigned int cidx; /* consumer index */
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unsigned int pidx; /* producer index */
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unsigned int gen; /* current value of generation bit */
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unsigned int unacked; /* Tx descriptors used since last COMPL */
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struct tx_desc *desc; /* address of HW Tx descriptor ring */
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struct tx_sw_desc *sdesc; /* address of SW Tx descriptor ring */
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spinlock_t lock; /* guards enqueueing of new packets */
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unsigned int token; /* WR token */
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dma_addr_t phys_addr; /* physical address of the ring */
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struct sk_buff_head sendq; /* List of backpressured offload packets */
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struct tasklet_struct qresume_tsk; /* restarts the queue */
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unsigned int cntxt_id; /* SGE context id for the Tx q */
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unsigned long stops; /* # of times q has been stopped */
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unsigned long restarts; /* # of queue restarts */
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};
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enum { /* per port SGE statistics */
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SGE_PSTAT_TSO, /* # of TSO requests */
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SGE_PSTAT_RX_CSUM_GOOD, /* # of successful RX csum offloads */
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SGE_PSTAT_TX_CSUM, /* # of TX checksum offloads */
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SGE_PSTAT_VLANEX, /* # of VLAN tag extractions */
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SGE_PSTAT_VLANINS, /* # of VLAN tag insertions */
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SGE_PSTAT_MAX /* must be last */
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};
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struct napi_gro_fraginfo;
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struct sge_qset { /* an SGE queue set */
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struct adapter *adap;
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struct napi_struct napi;
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struct sge_rspq rspq;
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struct sge_fl fl[SGE_RXQ_PER_SET];
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struct sge_txq txq[SGE_TXQ_PER_SET];
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struct napi_gro_fraginfo lro_frag_tbl;
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int lro_enabled;
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void *lro_va;
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struct net_device *netdev;
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struct netdev_queue *tx_q; /* associated netdev TX queue */
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unsigned long txq_stopped; /* which Tx queues are stopped */
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struct timer_list tx_reclaim_timer; /* reclaims TX buffers */
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struct timer_list rx_reclaim_timer; /* reclaims RX buffers */
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unsigned long port_stats[SGE_PSTAT_MAX];
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} ____cacheline_aligned;
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struct sge {
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struct sge_qset qs[SGE_QSETS];
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spinlock_t reg_lock; /* guards non-atomic SGE registers (eg context) */
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};
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struct adapter {
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struct t3cdev tdev;
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struct list_head adapter_list;
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void __iomem *regs;
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struct pci_dev *pdev;
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unsigned long registered_device_map;
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unsigned long open_device_map;
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unsigned long flags;
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const char *name;
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int msg_enable;
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unsigned int mmio_len;
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struct adapter_params params;
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unsigned int slow_intr_mask;
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unsigned long irq_stats[IRQ_NUM_STATS];
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int msix_nvectors;
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struct {
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unsigned short vec;
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char desc[22];
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} msix_info[SGE_QSETS + 1];
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/* T3 modules */
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struct sge sge;
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struct mc7 pmrx;
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struct mc7 pmtx;
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struct mc7 cm;
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struct mc5 mc5;
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struct net_device *port[MAX_NPORTS];
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unsigned int check_task_cnt;
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struct delayed_work adap_check_task;
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struct work_struct ext_intr_handler_task;
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struct work_struct fatal_error_handler_task;
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struct work_struct link_fault_handler_task;
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struct dentry *debugfs_root;
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struct mutex mdio_lock;
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spinlock_t stats_lock;
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spinlock_t work_lock;
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};
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static inline u32 t3_read_reg(struct adapter *adapter, u32 reg_addr)
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{
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u32 val = readl(adapter->regs + reg_addr);
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CH_DBG(adapter, MMIO, "read register 0x%x value 0x%x\n", reg_addr, val);
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return val;
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}
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static inline void t3_write_reg(struct adapter *adapter, u32 reg_addr, u32 val)
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{
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CH_DBG(adapter, MMIO, "setting register 0x%x to 0x%x\n", reg_addr, val);
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writel(val, adapter->regs + reg_addr);
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}
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static inline struct port_info *adap2pinfo(struct adapter *adap, int idx)
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{
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return netdev_priv(adap->port[idx]);
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}
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#define OFFLOAD_DEVMAP_BIT 15
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#define tdev2adap(d) container_of(d, struct adapter, tdev)
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static inline int offload_running(struct adapter *adapter)
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{
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return test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map);
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}
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int t3_offload_tx(struct t3cdev *tdev, struct sk_buff *skb);
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void t3_os_ext_intr_handler(struct adapter *adapter);
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void t3_os_link_changed(struct adapter *adapter, int port_id, int link_status,
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int speed, int duplex, int fc);
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void t3_os_phymod_changed(struct adapter *adap, int port_id);
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void t3_os_link_fault(struct adapter *adapter, int port_id, int state);
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void t3_os_link_fault_handler(struct adapter *adapter, int port_id);
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void t3_sge_start(struct adapter *adap);
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void t3_sge_stop(struct adapter *adap);
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void t3_start_sge_timers(struct adapter *adap);
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void t3_stop_sge_timers(struct adapter *adap);
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void t3_free_sge_resources(struct adapter *adap);
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void t3_sge_err_intr_handler(struct adapter *adapter);
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irq_handler_t t3_intr_handler(struct adapter *adap, int polling);
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int t3_eth_xmit(struct sk_buff *skb, struct net_device *dev);
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int t3_mgmt_tx(struct adapter *adap, struct sk_buff *skb);
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void t3_update_qset_coalesce(struct sge_qset *qs, const struct qset_params *p);
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int t3_sge_alloc_qset(struct adapter *adapter, unsigned int id, int nports,
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int irq_vec_idx, const struct qset_params *p,
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int ntxq, struct net_device *dev,
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struct netdev_queue *netdevq);
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int t3_get_desc(const struct sge_qset *qs, unsigned int qnum, unsigned int idx,
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unsigned char *data);
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irqreturn_t t3_sge_intr_msix(int irq, void *cookie);
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#endif /* __T3_ADAPTER_H__ */
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