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linux-next/drivers/net/ehea/ehea.h
Hannes Hering 357eb46d8f ehea: Fix napi list corruption on ifconfig down 
This patch fixes the napi list handling when an ehea interface is shut
down to avoid corruption of the napi list.

Signed-off-by: Hannes Hering <hering2@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-04 11:48:39 -07:00

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/*
* linux/drivers/net/ehea/ehea.h
*
* eHEA ethernet device driver for IBM eServer System p
*
* (C) Copyright IBM Corp. 2006
*
* Authors:
* Christoph Raisch <raisch@de.ibm.com>
* Jan-Bernd Themann <themann@de.ibm.com>
* Thomas Klein <tklein@de.ibm.com>
*
*
* 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; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __EHEA_H__
#define __EHEA_H__
#include <linux/module.h>
#include <linux/ethtool.h>
#include <linux/vmalloc.h>
#include <linux/if_vlan.h>
#include <linux/inet_lro.h>
#include <asm/ibmebus.h>
#include <asm/abs_addr.h>
#include <asm/io.h>
#define DRV_NAME "ehea"
#define DRV_VERSION "EHEA_0102"
/* eHEA capability flags */
#define DLPAR_PORT_ADD_REM 1
#define DLPAR_MEM_ADD 2
#define DLPAR_MEM_REM 4
#define EHEA_CAPABILITIES (DLPAR_PORT_ADD_REM | DLPAR_MEM_ADD | DLPAR_MEM_REM)
#define EHEA_MSG_DEFAULT (NETIF_MSG_LINK | NETIF_MSG_TIMER \
| NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
#define EHEA_MAX_ENTRIES_RQ1 32767
#define EHEA_MAX_ENTRIES_RQ2 16383
#define EHEA_MAX_ENTRIES_RQ3 16383
#define EHEA_MAX_ENTRIES_SQ 32767
#define EHEA_MIN_ENTRIES_QP 127
#define EHEA_SMALL_QUEUES
#define EHEA_NUM_TX_QP 1
#define EHEA_LRO_MAX_AGGR 64
#ifdef EHEA_SMALL_QUEUES
#define EHEA_MAX_CQE_COUNT 1023
#define EHEA_DEF_ENTRIES_SQ 1023
#define EHEA_DEF_ENTRIES_RQ1 4095
#define EHEA_DEF_ENTRIES_RQ2 1023
#define EHEA_DEF_ENTRIES_RQ3 1023
#else
#define EHEA_MAX_CQE_COUNT 4080
#define EHEA_DEF_ENTRIES_SQ 4080
#define EHEA_DEF_ENTRIES_RQ1 8160
#define EHEA_DEF_ENTRIES_RQ2 2040
#define EHEA_DEF_ENTRIES_RQ3 2040
#endif
#define EHEA_MAX_ENTRIES_EQ 20
#define EHEA_SG_SQ 2
#define EHEA_SG_RQ1 1
#define EHEA_SG_RQ2 0
#define EHEA_SG_RQ3 0
#define EHEA_MAX_PACKET_SIZE 9022 /* for jumbo frames */
#define EHEA_RQ2_PKT_SIZE 1522
#define EHEA_L_PKT_SIZE 256 /* low latency */
#define MAX_LRO_DESCRIPTORS 8
/* Send completion signaling */
/* Protection Domain Identifier */
#define EHEA_PD_ID 0xaabcdeff
#define EHEA_RQ2_THRESHOLD 1
#define EHEA_RQ3_THRESHOLD 9 /* use RQ3 threshold of 1522 bytes */
#define EHEA_SPEED_10G 10000
#define EHEA_SPEED_1G 1000
#define EHEA_SPEED_100M 100
#define EHEA_SPEED_10M 10
#define EHEA_SPEED_AUTONEG 0
/* Broadcast/Multicast registration types */
#define EHEA_BCMC_SCOPE_ALL 0x08
#define EHEA_BCMC_SCOPE_SINGLE 0x00
#define EHEA_BCMC_MULTICAST 0x04
#define EHEA_BCMC_BROADCAST 0x00
#define EHEA_BCMC_UNTAGGED 0x02
#define EHEA_BCMC_TAGGED 0x00
#define EHEA_BCMC_VLANID_ALL 0x01
#define EHEA_BCMC_VLANID_SINGLE 0x00
#define EHEA_CACHE_LINE 128
/* Memory Regions */
#define EHEA_MR_ACC_CTRL 0x00800000
#define EHEA_BUSMAP_START 0x8000000000000000ULL
#define EHEA_INVAL_ADDR 0xFFFFFFFFFFFFFFFFULL
#define EHEA_DIR_INDEX_SHIFT 13 /* 8k Entries in 64k block */
#define EHEA_TOP_INDEX_SHIFT (EHEA_DIR_INDEX_SHIFT * 2)
#define EHEA_MAP_ENTRIES (1 << EHEA_DIR_INDEX_SHIFT)
#define EHEA_MAP_SIZE (0x10000) /* currently fixed map size */
#define EHEA_INDEX_MASK (EHEA_MAP_ENTRIES - 1)
#define EHEA_WATCH_DOG_TIMEOUT 10*HZ
/* utility functions */
#define ehea_info(fmt, args...) \
printk(KERN_INFO DRV_NAME ": " fmt "\n", ## args)
#define ehea_error(fmt, args...) \
printk(KERN_ERR DRV_NAME ": Error in %s: " fmt "\n", __func__, ## args)
#ifdef DEBUG
#define ehea_debug(fmt, args...) \
printk(KERN_DEBUG DRV_NAME ": " fmt, ## args)
#else
#define ehea_debug(fmt, args...) do {} while (0)
#endif
void ehea_dump(void *adr, int len, char *msg);
#define EHEA_BMASK(pos, length) (((pos) << 16) + (length))
#define EHEA_BMASK_IBM(from, to) (((63 - to) << 16) + ((to) - (from) + 1))
#define EHEA_BMASK_SHIFTPOS(mask) (((mask) >> 16) & 0xffff)
#define EHEA_BMASK_MASK(mask) \
(0xffffffffffffffffULL >> ((64 - (mask)) & 0xffff))
#define EHEA_BMASK_SET(mask, value) \
((EHEA_BMASK_MASK(mask) & ((u64)(value))) << EHEA_BMASK_SHIFTPOS(mask))
#define EHEA_BMASK_GET(mask, value) \
(EHEA_BMASK_MASK(mask) & (((u64)(value)) >> EHEA_BMASK_SHIFTPOS(mask)))
/*
* Generic ehea page
*/
struct ehea_page {
u8 entries[PAGE_SIZE];
};
/*
* Generic queue in linux kernel virtual memory
*/
struct hw_queue {
u64 current_q_offset; /* current queue entry */
struct ehea_page **queue_pages; /* array of pages belonging to queue */
u32 qe_size; /* queue entry size */
u32 queue_length; /* queue length allocated in bytes */
u32 pagesize;
u32 toggle_state; /* toggle flag - per page */
u32 reserved; /* 64 bit alignment */
};
/*
* For pSeries this is a 64bit memory address where
* I/O memory is mapped into CPU address space
*/
struct h_epa {
void __iomem *addr;
};
struct h_epa_user {
u64 addr;
};
struct h_epas {
struct h_epa kernel; /* kernel space accessible resource,
set to 0 if unused */
struct h_epa_user user; /* user space accessible resource
set to 0 if unused */
};
/*
* Memory map data structures
*/
struct ehea_dir_bmap
{
u64 ent[EHEA_MAP_ENTRIES];
};
struct ehea_top_bmap
{
struct ehea_dir_bmap *dir[EHEA_MAP_ENTRIES];
};
struct ehea_bmap
{
struct ehea_top_bmap *top[EHEA_MAP_ENTRIES];
};
struct ehea_qp;
struct ehea_cq;
struct ehea_eq;
struct ehea_port;
struct ehea_av;
/*
* Queue attributes passed to ehea_create_qp()
*/
struct ehea_qp_init_attr {
/* input parameter */
u32 qp_token; /* queue token */
u8 low_lat_rq1;
u8 signalingtype; /* cqe generation flag */
u8 rq_count; /* num of receive queues */
u8 eqe_gen; /* eqe generation flag */
u16 max_nr_send_wqes; /* max number of send wqes */
u16 max_nr_rwqes_rq1; /* max number of receive wqes */
u16 max_nr_rwqes_rq2;
u16 max_nr_rwqes_rq3;
u8 wqe_size_enc_sq;
u8 wqe_size_enc_rq1;
u8 wqe_size_enc_rq2;
u8 wqe_size_enc_rq3;
u8 swqe_imm_data_len; /* immediate data length for swqes */
u16 port_nr;
u16 rq2_threshold;
u16 rq3_threshold;
u64 send_cq_handle;
u64 recv_cq_handle;
u64 aff_eq_handle;
/* output parameter */
u32 qp_nr;
u16 act_nr_send_wqes;
u16 act_nr_rwqes_rq1;
u16 act_nr_rwqes_rq2;
u16 act_nr_rwqes_rq3;
u8 act_wqe_size_enc_sq;
u8 act_wqe_size_enc_rq1;
u8 act_wqe_size_enc_rq2;
u8 act_wqe_size_enc_rq3;
u32 nr_sq_pages;
u32 nr_rq1_pages;
u32 nr_rq2_pages;
u32 nr_rq3_pages;
u32 liobn_sq;
u32 liobn_rq1;
u32 liobn_rq2;
u32 liobn_rq3;
};
/*
* Event Queue attributes, passed as parameter
*/
struct ehea_eq_attr {
u32 type;
u32 max_nr_of_eqes;
u8 eqe_gen; /* generate eqe flag */
u64 eq_handle;
u32 act_nr_of_eqes;
u32 nr_pages;
u32 ist1; /* Interrupt service token */
u32 ist2;
u32 ist3;
u32 ist4;
};
/*
* Event Queue
*/
struct ehea_eq {
struct ehea_adapter *adapter;
struct hw_queue hw_queue;
u64 fw_handle;
struct h_epas epas;
spinlock_t spinlock;
struct ehea_eq_attr attr;
};
/*
* HEA Queues
*/
struct ehea_qp {
struct ehea_adapter *adapter;
u64 fw_handle; /* QP handle for firmware calls */
struct hw_queue hw_squeue;
struct hw_queue hw_rqueue1;
struct hw_queue hw_rqueue2;
struct hw_queue hw_rqueue3;
struct h_epas epas;
struct ehea_qp_init_attr init_attr;
};
/*
* Completion Queue attributes
*/
struct ehea_cq_attr {
/* input parameter */
u32 max_nr_of_cqes;
u32 cq_token;
u64 eq_handle;
/* output parameter */
u32 act_nr_of_cqes;
u32 nr_pages;
};
/*
* Completion Queue
*/
struct ehea_cq {
struct ehea_adapter *adapter;
u64 fw_handle;
struct hw_queue hw_queue;
struct h_epas epas;
struct ehea_cq_attr attr;
};
/*
* Memory Region
*/
struct ehea_mr {
struct ehea_adapter *adapter;
u64 handle;
u64 vaddr;
u32 lkey;
};
/*
* Port state information
*/
struct port_stats {
int poll_receive_errors;
int queue_stopped;
int err_tcp_cksum;
int err_ip_cksum;
int err_frame_crc;
};
#define EHEA_IRQ_NAME_SIZE 20
/*
* Queue SKB Array
*/
struct ehea_q_skb_arr {
struct sk_buff **arr; /* skb array for queue */
int len; /* array length */
int index; /* array index */
int os_skbs; /* rq2/rq3 only: outstanding skbs */
};
/*
* Port resources
*/
struct ehea_port_res {
struct napi_struct napi;
struct port_stats p_stats;
struct ehea_mr send_mr; /* send memory region */
struct ehea_mr recv_mr; /* receive memory region */
spinlock_t xmit_lock;
struct ehea_port *port;
char int_recv_name[EHEA_IRQ_NAME_SIZE];
char int_send_name[EHEA_IRQ_NAME_SIZE];
struct ehea_qp *qp;
struct ehea_cq *send_cq;
struct ehea_cq *recv_cq;
struct ehea_eq *eq;
struct ehea_q_skb_arr rq1_skba;
struct ehea_q_skb_arr rq2_skba;
struct ehea_q_skb_arr rq3_skba;
struct ehea_q_skb_arr sq_skba;
int sq_skba_size;
spinlock_t netif_queue;
int queue_stopped;
int swqe_refill_th;
atomic_t swqe_avail;
int swqe_ll_count;
u32 swqe_id_counter;
u64 tx_packets;
u64 rx_packets;
u32 poll_counter;
struct net_lro_mgr lro_mgr;
struct net_lro_desc lro_desc[MAX_LRO_DESCRIPTORS];
};
#define EHEA_MAX_PORTS 16
#define EHEA_NUM_PORTRES_FW_HANDLES 6 /* QP handle, SendCQ handle,
RecvCQ handle, EQ handle,
SendMR handle, RecvMR handle */
#define EHEA_NUM_PORT_FW_HANDLES 1 /* EQ handle */
#define EHEA_NUM_ADAPTER_FW_HANDLES 2 /* MR handle, NEQ handle */
struct ehea_adapter {
u64 handle;
struct of_device *ofdev;
struct ehea_port *port[EHEA_MAX_PORTS];
struct ehea_eq *neq; /* notification event queue */
struct tasklet_struct neq_tasklet;
struct ehea_mr mr;
u32 pd; /* protection domain */
u64 max_mc_mac; /* max number of multicast mac addresses */
int active_ports;
struct list_head list;
};
struct ehea_mc_list {
struct list_head list;
u64 macaddr;
};
/* kdump support */
struct ehea_fw_handle_entry {
u64 adh; /* Adapter Handle */
u64 fwh; /* Firmware Handle */
};
struct ehea_fw_handle_array {
struct ehea_fw_handle_entry *arr;
int num_entries;
struct mutex lock;
};
struct ehea_bcmc_reg_entry {
u64 adh; /* Adapter Handle */
u32 port_id; /* Logical Port Id */
u8 reg_type; /* Registration Type */
u64 macaddr;
};
struct ehea_bcmc_reg_array {
struct ehea_bcmc_reg_entry *arr;
int num_entries;
spinlock_t lock;
};
#define EHEA_PORT_UP 1
#define EHEA_PORT_DOWN 0
#define EHEA_PHY_LINK_UP 1
#define EHEA_PHY_LINK_DOWN 0
#define EHEA_MAX_PORT_RES 16
struct ehea_port {
struct ehea_adapter *adapter; /* adapter that owns this port */
struct net_device *netdev;
struct net_device_stats stats;
struct ehea_port_res port_res[EHEA_MAX_PORT_RES];
struct of_device ofdev; /* Open Firmware Device */
struct ehea_mc_list *mc_list; /* Multicast MAC addresses */
struct vlan_group *vgrp;
struct ehea_eq *qp_eq;
struct work_struct reset_task;
struct mutex port_lock;
char int_aff_name[EHEA_IRQ_NAME_SIZE];
int allmulti; /* Indicates IFF_ALLMULTI state */
int promisc; /* Indicates IFF_PROMISC state */
int num_tx_qps;
int num_add_tx_qps;
int num_mcs;
int resets;
unsigned long flags;
u64 mac_addr;
u32 logical_port_id;
u32 port_speed;
u32 msg_enable;
u32 sig_comp_iv;
u32 state;
u32 lro_max_aggr;
u8 phy_link;
u8 full_duplex;
u8 autoneg;
u8 num_def_qps;
};
struct port_res_cfg {
int max_entries_rcq;
int max_entries_scq;
int max_entries_sq;
int max_entries_rq1;
int max_entries_rq2;
int max_entries_rq3;
};
enum ehea_flag_bits {
__EHEA_STOP_XFER,
__EHEA_DISABLE_PORT_RESET
};
void ehea_set_ethtool_ops(struct net_device *netdev);
int ehea_sense_port_attr(struct ehea_port *port);
int ehea_set_portspeed(struct ehea_port *port, u32 port_speed);
extern struct work_struct ehea_rereg_mr_task;
#endif /* __EHEA_H__ */
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