291 lines
9.8 KiB
C
291 lines
9.8 KiB
C
/*
|
|
* Copyright (c) 2003-2007 Chelsio, 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.
|
|
*/
|
|
|
|
/* This file should not be included directly. Include common.h instead. */
|
|
|
|
#ifndef __T3_ADAPTER_H__
|
|
#define __T3_ADAPTER_H__
|
|
|
|
#include <linux/pci.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/timer.h>
|
|
#include <linux/cache.h>
|
|
#include <linux/mutex.h>
|
|
#include "t3cdev.h"
|
|
#include <asm/semaphore.h>
|
|
#include <asm/bitops.h>
|
|
#include <asm/io.h>
|
|
|
|
typedef irqreturn_t(*intr_handler_t) (int, void *);
|
|
|
|
struct vlan_group;
|
|
|
|
struct port_info {
|
|
struct vlan_group *vlan_grp;
|
|
const struct port_type_info *port_type;
|
|
u8 port_id;
|
|
u8 rx_csum_offload;
|
|
u8 nqsets;
|
|
u8 first_qset;
|
|
struct cphy phy;
|
|
struct cmac mac;
|
|
struct link_config link_config;
|
|
struct net_device_stats netstats;
|
|
int activity;
|
|
};
|
|
|
|
enum { /* adapter flags */
|
|
FULL_INIT_DONE = (1 << 0),
|
|
USING_MSI = (1 << 1),
|
|
USING_MSIX = (1 << 2),
|
|
QUEUES_BOUND = (1 << 3),
|
|
};
|
|
|
|
struct fl_pg_chunk {
|
|
struct page *page;
|
|
void *va;
|
|
unsigned int offset;
|
|
};
|
|
|
|
struct rx_desc;
|
|
struct rx_sw_desc;
|
|
|
|
struct sge_fl { /* SGE per free-buffer list state */
|
|
unsigned int buf_size; /* size of each Rx buffer */
|
|
unsigned int credits; /* # of available Rx buffers */
|
|
unsigned int size; /* capacity of free list */
|
|
unsigned int cidx; /* consumer index */
|
|
unsigned int pidx; /* producer index */
|
|
unsigned int gen; /* free list generation */
|
|
struct fl_pg_chunk pg_chunk;/* page chunk cache */
|
|
unsigned int use_pages; /* whether FL uses pages or sk_buffs */
|
|
struct rx_desc *desc; /* address of HW Rx descriptor ring */
|
|
struct rx_sw_desc *sdesc; /* address of SW Rx descriptor ring */
|
|
dma_addr_t phys_addr; /* physical address of HW ring start */
|
|
unsigned int cntxt_id; /* SGE context id for the free list */
|
|
unsigned long empty; /* # of times queue ran out of buffers */
|
|
unsigned long alloc_failed; /* # of times buffer allocation failed */
|
|
};
|
|
|
|
/*
|
|
* Bundle size for grouping offload RX packets for delivery to the stack.
|
|
* Don't make this too big as we do prefetch on each packet in a bundle.
|
|
*/
|
|
# define RX_BUNDLE_SIZE 8
|
|
|
|
struct rsp_desc;
|
|
|
|
struct sge_rspq { /* state for an SGE response queue */
|
|
unsigned int credits; /* # of pending response credits */
|
|
unsigned int size; /* capacity of response queue */
|
|
unsigned int cidx; /* consumer index */
|
|
unsigned int gen; /* current generation bit */
|
|
unsigned int polling; /* is the queue serviced through NAPI? */
|
|
unsigned int holdoff_tmr; /* interrupt holdoff timer in 100ns */
|
|
unsigned int next_holdoff; /* holdoff time for next interrupt */
|
|
struct rsp_desc *desc; /* address of HW response ring */
|
|
dma_addr_t phys_addr; /* physical address of the ring */
|
|
unsigned int cntxt_id; /* SGE context id for the response q */
|
|
spinlock_t lock; /* guards response processing */
|
|
struct sk_buff *rx_head; /* offload packet receive queue head */
|
|
struct sk_buff *rx_tail; /* offload packet receive queue tail */
|
|
|
|
unsigned long offload_pkts;
|
|
unsigned long offload_bundles;
|
|
unsigned long eth_pkts; /* # of ethernet packets */
|
|
unsigned long pure_rsps; /* # of pure (non-data) responses */
|
|
unsigned long imm_data; /* responses with immediate data */
|
|
unsigned long rx_drops; /* # of packets dropped due to no mem */
|
|
unsigned long async_notif; /* # of asynchronous notification events */
|
|
unsigned long empty; /* # of times queue ran out of credits */
|
|
unsigned long nomem; /* # of responses deferred due to no mem */
|
|
unsigned long unhandled_irqs; /* # of spurious intrs */
|
|
unsigned long starved;
|
|
unsigned long restarted;
|
|
};
|
|
|
|
struct tx_desc;
|
|
struct tx_sw_desc;
|
|
|
|
struct sge_txq { /* state for an SGE Tx queue */
|
|
unsigned long flags; /* HW DMA fetch status */
|
|
unsigned int in_use; /* # of in-use Tx descriptors */
|
|
unsigned int size; /* # of descriptors */
|
|
unsigned int processed; /* total # of descs HW has processed */
|
|
unsigned int cleaned; /* total # of descs SW has reclaimed */
|
|
unsigned int stop_thres; /* SW TX queue suspend threshold */
|
|
unsigned int cidx; /* consumer index */
|
|
unsigned int pidx; /* producer index */
|
|
unsigned int gen; /* current value of generation bit */
|
|
unsigned int unacked; /* Tx descriptors used since last COMPL */
|
|
struct tx_desc *desc; /* address of HW Tx descriptor ring */
|
|
struct tx_sw_desc *sdesc; /* address of SW Tx descriptor ring */
|
|
spinlock_t lock; /* guards enqueueing of new packets */
|
|
unsigned int token; /* WR token */
|
|
dma_addr_t phys_addr; /* physical address of the ring */
|
|
struct sk_buff_head sendq; /* List of backpressured offload packets */
|
|
struct tasklet_struct qresume_tsk; /* restarts the queue */
|
|
unsigned int cntxt_id; /* SGE context id for the Tx q */
|
|
unsigned long stops; /* # of times q has been stopped */
|
|
unsigned long restarts; /* # of queue restarts */
|
|
};
|
|
|
|
enum { /* per port SGE statistics */
|
|
SGE_PSTAT_TSO, /* # of TSO requests */
|
|
SGE_PSTAT_RX_CSUM_GOOD, /* # of successful RX csum offloads */
|
|
SGE_PSTAT_TX_CSUM, /* # of TX checksum offloads */
|
|
SGE_PSTAT_VLANEX, /* # of VLAN tag extractions */
|
|
SGE_PSTAT_VLANINS, /* # of VLAN tag insertions */
|
|
|
|
SGE_PSTAT_MAX /* must be last */
|
|
};
|
|
|
|
struct sge_qset { /* an SGE queue set */
|
|
struct sge_rspq rspq;
|
|
struct sge_fl fl[SGE_RXQ_PER_SET];
|
|
struct sge_txq txq[SGE_TXQ_PER_SET];
|
|
struct net_device *netdev; /* associated net device */
|
|
unsigned long txq_stopped; /* which Tx queues are stopped */
|
|
struct timer_list tx_reclaim_timer; /* reclaims TX buffers */
|
|
unsigned long port_stats[SGE_PSTAT_MAX];
|
|
} ____cacheline_aligned;
|
|
|
|
struct sge {
|
|
struct sge_qset qs[SGE_QSETS];
|
|
spinlock_t reg_lock; /* guards non-atomic SGE registers (eg context) */
|
|
};
|
|
|
|
struct adapter {
|
|
struct t3cdev tdev;
|
|
struct list_head adapter_list;
|
|
void __iomem *regs;
|
|
struct pci_dev *pdev;
|
|
unsigned long registered_device_map;
|
|
unsigned long open_device_map;
|
|
unsigned long flags;
|
|
|
|
const char *name;
|
|
int msg_enable;
|
|
unsigned int mmio_len;
|
|
|
|
struct adapter_params params;
|
|
unsigned int slow_intr_mask;
|
|
unsigned long irq_stats[IRQ_NUM_STATS];
|
|
|
|
struct {
|
|
unsigned short vec;
|
|
char desc[22];
|
|
} msix_info[SGE_QSETS + 1];
|
|
|
|
/* T3 modules */
|
|
struct sge sge;
|
|
struct mc7 pmrx;
|
|
struct mc7 pmtx;
|
|
struct mc7 cm;
|
|
struct mc5 mc5;
|
|
|
|
struct net_device *port[MAX_NPORTS];
|
|
unsigned int check_task_cnt;
|
|
struct delayed_work adap_check_task;
|
|
struct work_struct ext_intr_handler_task;
|
|
|
|
/*
|
|
* Dummy netdevices are needed when using multiple receive queues with
|
|
* NAPI as each netdevice can service only one queue.
|
|
*/
|
|
struct net_device *dummy_netdev[SGE_QSETS - 1];
|
|
|
|
struct dentry *debugfs_root;
|
|
|
|
struct mutex mdio_lock;
|
|
spinlock_t stats_lock;
|
|
spinlock_t work_lock;
|
|
};
|
|
|
|
static inline u32 t3_read_reg(struct adapter *adapter, u32 reg_addr)
|
|
{
|
|
u32 val = readl(adapter->regs + reg_addr);
|
|
|
|
CH_DBG(adapter, MMIO, "read register 0x%x value 0x%x\n", reg_addr, val);
|
|
return val;
|
|
}
|
|
|
|
static inline void t3_write_reg(struct adapter *adapter, u32 reg_addr, u32 val)
|
|
{
|
|
CH_DBG(adapter, MMIO, "setting register 0x%x to 0x%x\n", reg_addr, val);
|
|
writel(val, adapter->regs + reg_addr);
|
|
}
|
|
|
|
static inline struct port_info *adap2pinfo(struct adapter *adap, int idx)
|
|
{
|
|
return netdev_priv(adap->port[idx]);
|
|
}
|
|
|
|
/*
|
|
* We use the spare atalk_ptr to map a net device to its SGE queue set.
|
|
* This is a macro so it can be used as l-value.
|
|
*/
|
|
#define dev2qset(netdev) ((netdev)->atalk_ptr)
|
|
|
|
#define OFFLOAD_DEVMAP_BIT 15
|
|
|
|
#define tdev2adap(d) container_of(d, struct adapter, tdev)
|
|
|
|
static inline int offload_running(struct adapter *adapter)
|
|
{
|
|
return test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map);
|
|
}
|
|
|
|
int t3_offload_tx(struct t3cdev *tdev, struct sk_buff *skb);
|
|
|
|
void t3_os_ext_intr_handler(struct adapter *adapter);
|
|
void t3_os_link_changed(struct adapter *adapter, int port_id, int link_status,
|
|
int speed, int duplex, int fc);
|
|
|
|
void t3_sge_start(struct adapter *adap);
|
|
void t3_sge_stop(struct adapter *adap);
|
|
void t3_free_sge_resources(struct adapter *adap);
|
|
void t3_sge_err_intr_handler(struct adapter *adapter);
|
|
intr_handler_t t3_intr_handler(struct adapter *adap, int polling);
|
|
int t3_eth_xmit(struct sk_buff *skb, struct net_device *dev);
|
|
int t3_mgmt_tx(struct adapter *adap, struct sk_buff *skb);
|
|
void t3_update_qset_coalesce(struct sge_qset *qs, const struct qset_params *p);
|
|
int t3_sge_alloc_qset(struct adapter *adapter, unsigned int id, int nports,
|
|
int irq_vec_idx, const struct qset_params *p,
|
|
int ntxq, struct net_device *netdev);
|
|
int t3_get_desc(const struct sge_qset *qs, unsigned int qnum, unsigned int idx,
|
|
unsigned char *data);
|
|
irqreturn_t t3_sge_intr_msix(int irq, void *cookie);
|
|
|
|
#endif /* __T3_ADAPTER_H__ */
|