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linux/drivers/net/benet/be.h
Somnath Kotur cc4ce02093 be2net: Changes to use only priority codes allowed by f/w 
Changes to use one of the priority codes allowed by CNA f/w for NIC traffic
from host. The driver gets the bit map of the priority codes allowed for
host traffic through a asynchronous message from the f/w that the driver
subscribes to.

Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-10-21 07:11:14 -07:00

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/*
* Copyright (C) 2005 - 2010 ServerEngines
* All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation. The full GNU General
* Public License is included in this distribution in the file called COPYING.
*
* Contact Information:
* linux-drivers@serverengines.com
*
* ServerEngines
* 209 N. Fair Oaks Ave
* Sunnyvale, CA 94085
*/
#ifndef BE_H
#define BE_H
#include <linux/pci.h>
#include <linux/etherdevice.h>
#include <linux/version.h>
#include <linux/delay.h>
#include <net/tcp.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <linux/if_vlan.h>
#include <linux/workqueue.h>
#include <linux/interrupt.h>
#include <linux/firmware.h>
#include <linux/slab.h>
#include "be_hw.h"
#define DRV_VER "2.103.175u"
#define DRV_NAME "be2net"
#define BE_NAME "ServerEngines BladeEngine2 10Gbps NIC"
#define BE3_NAME "ServerEngines BladeEngine3 10Gbps NIC"
#define OC_NAME "Emulex OneConnect 10Gbps NIC"
#define OC_NAME1 "Emulex OneConnect 10Gbps NIC (be3)"
#define DRV_DESC "ServerEngines BladeEngine 10Gbps NIC Driver"
#define BE_VENDOR_ID 0x19a2
#define BE_DEVICE_ID1 0x211
#define BE_DEVICE_ID2 0x221
#define OC_DEVICE_ID1 0x700
#define OC_DEVICE_ID2 0x710
static inline char *nic_name(struct pci_dev *pdev)
{
switch (pdev->device) {
case OC_DEVICE_ID1:
return OC_NAME;
case OC_DEVICE_ID2:
return OC_NAME1;
case BE_DEVICE_ID2:
return BE3_NAME;
default:
return BE_NAME;
}
}
/* Number of bytes of an RX frame that are copied to skb->data */
#define BE_HDR_LEN 64
#define BE_MAX_JUMBO_FRAME_SIZE 9018
#define BE_MIN_MTU 256
#define BE_NUM_VLANS_SUPPORTED 64
#define BE_MAX_EQD 96
#define BE_MAX_TX_FRAG_COUNT 30
#define EVNT_Q_LEN 1024
#define TX_Q_LEN 2048
#define TX_CQ_LEN 1024
#define RX_Q_LEN 1024 /* Does not support any other value */
#define RX_CQ_LEN 1024
#define MCC_Q_LEN 128 /* total size not to exceed 8 pages */
#define MCC_CQ_LEN 256
#define MAX_RSS_QS 4 /* BE limit is 4 queues/port */
#define BE_MAX_MSIX_VECTORS (MAX_RSS_QS + 1 + 1)/* RSS qs + 1 def Rx + Tx */
#define BE_NAPI_WEIGHT 64
#define MAX_RX_POST BE_NAPI_WEIGHT /* Frags posted at a time */
#define RX_FRAGS_REFILL_WM (RX_Q_LEN - MAX_RX_POST)
#define FW_VER_LEN 32
#define BE_MAX_VF 32
struct be_dma_mem {
void *va;
dma_addr_t dma;
u32 size;
};
struct be_queue_info {
struct be_dma_mem dma_mem;
u16 len;
u16 entry_size; /* Size of an element in the queue */
u16 id;
u16 tail, head;
bool created;
atomic_t used; /* Number of valid elements in the queue */
};
static inline u32 MODULO(u16 val, u16 limit)
{
BUG_ON(limit & (limit - 1));
return val & (limit - 1);
}
static inline void index_adv(u16 *index, u16 val, u16 limit)
{
*index = MODULO((*index + val), limit);
}
static inline void index_inc(u16 *index, u16 limit)
{
*index = MODULO((*index + 1), limit);
}
static inline void *queue_head_node(struct be_queue_info *q)
{
return q->dma_mem.va + q->head * q->entry_size;
}
static inline void *queue_tail_node(struct be_queue_info *q)
{
return q->dma_mem.va + q->tail * q->entry_size;
}
static inline void queue_head_inc(struct be_queue_info *q)
{
index_inc(&q->head, q->len);
}
static inline void queue_tail_inc(struct be_queue_info *q)
{
index_inc(&q->tail, q->len);
}
struct be_eq_obj {
struct be_queue_info q;
char desc[32];
/* Adaptive interrupt coalescing (AIC) info */
bool enable_aic;
u16 min_eqd; /* in usecs */
u16 max_eqd; /* in usecs */
u16 cur_eqd; /* in usecs */
struct napi_struct napi;
};
struct be_mcc_obj {
struct be_queue_info q;
struct be_queue_info cq;
bool rearm_cq;
};
struct be_tx_stats {
u32 be_tx_reqs; /* number of TX requests initiated */
u32 be_tx_stops; /* number of times TX Q was stopped */
u32 be_tx_wrbs; /* number of tx WRBs used */
u32 be_tx_events; /* number of tx completion events */
u32 be_tx_compl; /* number of tx completion entries processed */
ulong be_tx_jiffies;
u64 be_tx_bytes;
u64 be_tx_bytes_prev;
u64 be_tx_pkts;
u32 be_tx_rate;
};
struct be_tx_obj {
struct be_queue_info q;
struct be_queue_info cq;
/* Remember the skbs that were transmitted */
struct sk_buff *sent_skb_list[TX_Q_LEN];
};
/* Struct to remember the pages posted for rx frags */
struct be_rx_page_info {
struct page *page;
DEFINE_DMA_UNMAP_ADDR(bus);
u16 page_offset;
bool last_page_user;
};
struct be_rx_stats {
u32 rx_post_fail;/* number of ethrx buffer alloc failures */
u32 rx_polls; /* number of times NAPI called poll function */
u32 rx_events; /* number of ucast rx completion events */
u32 rx_compl; /* number of rx completion entries processed */
ulong rx_jiffies;
u64 rx_bytes;
u64 rx_bytes_prev;
u64 rx_pkts;
u32 rx_rate;
u32 rx_mcast_pkts;
u32 rxcp_err; /* Num rx completion entries w/ err set. */
ulong rx_fps_jiffies; /* jiffies at last FPS calc */
u32 rx_frags;
u32 prev_rx_frags;
u32 rx_fps; /* Rx frags per second */
};
struct be_rx_obj {
struct be_adapter *adapter;
struct be_queue_info q;
struct be_queue_info cq;
struct be_rx_page_info page_info_tbl[RX_Q_LEN];
struct be_eq_obj rx_eq;
struct be_rx_stats stats;
u8 rss_id;
bool rx_post_starved; /* Zero rx frags have been posted to BE */
u32 cache_line_barrier[16];
};
struct be_vf_cfg {
unsigned char vf_mac_addr[ETH_ALEN];
u32 vf_if_handle;
u32 vf_pmac_id;
u16 vf_vlan_tag;
u32 vf_tx_rate;
};
#define BE_INVALID_PMAC_ID 0xffffffff
struct be_adapter {
struct pci_dev *pdev;
struct net_device *netdev;
u8 __iomem *csr;
u8 __iomem *db; /* Door Bell */
u8 __iomem *pcicfg; /* PCI config space */
spinlock_t mbox_lock; /* For serializing mbox cmds to BE card */
struct be_dma_mem mbox_mem;
/* Mbox mem is adjusted to align to 16 bytes. The allocated addr
* is stored for freeing purpose */
struct be_dma_mem mbox_mem_alloced;
struct be_mcc_obj mcc_obj;
spinlock_t mcc_lock; /* For serializing mcc cmds to BE card */
spinlock_t mcc_cq_lock;
struct msix_entry msix_entries[BE_MAX_MSIX_VECTORS];
bool msix_enabled;
bool isr_registered;
/* TX Rings */
struct be_eq_obj tx_eq;
struct be_tx_obj tx_obj;
struct be_tx_stats tx_stats;
u32 cache_line_break[8];
/* Rx rings */
struct be_rx_obj rx_obj[MAX_RSS_QS + 1]; /* one default non-rss Q */
u32 num_rx_qs;
u32 big_page_size; /* Compounded page size shared by rx wrbs */
struct vlan_group *vlan_grp;
u16 vlans_added;
u16 max_vlans; /* Number of vlans supported */
u8 vlan_tag[VLAN_N_VID];
u8 vlan_prio_bmap; /* Available Priority BitMap */
u16 recommended_prio; /* Recommended Priority */
struct be_dma_mem mc_cmd_mem;
struct be_dma_mem stats_cmd;
/* Work queue used to perform periodic tasks like getting statistics */
struct delayed_work work;
/* Ethtool knobs and info */
bool rx_csum; /* BE card must perform rx-checksumming */
char fw_ver[FW_VER_LEN];
u32 if_handle; /* Used to configure filtering */
u32 pmac_id; /* MAC addr handle used by BE card */
bool eeh_err;
bool link_up;
u32 port_num;
bool promiscuous;
bool wol;
u32 function_mode;
u32 function_caps;
u32 rx_fc; /* Rx flow control */
u32 tx_fc; /* Tx flow control */
bool ue_detected;
bool stats_ioctl_sent;
int link_speed;
u8 port_type;
u8 transceiver;
u8 autoneg;
u8 generation; /* BladeEngine ASIC generation */
u32 flash_status;
struct completion flash_compl;
bool sriov_enabled;
struct be_vf_cfg vf_cfg[BE_MAX_VF];
u8 base_eq_id;
u8 is_virtfn;
};
#define be_physfn(adapter) (!adapter->is_virtfn)
/* BladeEngine Generation numbers */
#define BE_GEN2 2
#define BE_GEN3 3
extern const struct ethtool_ops be_ethtool_ops;
#define tx_stats(adapter) (&adapter->tx_stats)
#define rx_stats(rxo) (&rxo->stats)
#define BE_SET_NETDEV_OPS(netdev, ops) (netdev->netdev_ops = ops)
#define for_all_rx_queues(adapter, rxo, i) \
for (i = 0, rxo = &adapter->rx_obj[i]; i < adapter->num_rx_qs; \
i++, rxo++)
/* Just skip the first default non-rss queue */
#define for_all_rss_queues(adapter, rxo, i) \
for (i = 0, rxo = &adapter->rx_obj[i+1]; i < (adapter->num_rx_qs - 1);\
i++, rxo++)
#define PAGE_SHIFT_4K 12
#define PAGE_SIZE_4K (1 << PAGE_SHIFT_4K)
/* Returns number of pages spanned by the data starting at the given addr */
#define PAGES_4K_SPANNED(_address, size) \
((u32)((((size_t)(_address) & (PAGE_SIZE_4K - 1)) + \
(size) + (PAGE_SIZE_4K - 1)) >> PAGE_SHIFT_4K))
/* Byte offset into the page corresponding to given address */
#define OFFSET_IN_PAGE(addr) \
((size_t)(addr) & (PAGE_SIZE_4K-1))
/* Returns bit offset within a DWORD of a bitfield */
#define AMAP_BIT_OFFSET(_struct, field) \
(((size_t)&(((_struct *)0)->field))%32)
/* Returns the bit mask of the field that is NOT shifted into location. */
static inline u32 amap_mask(u32 bitsize)
{
return (bitsize == 32 ? 0xFFFFFFFF : (1 << bitsize) - 1);
}
static inline void
amap_set(void *ptr, u32 dw_offset, u32 mask, u32 offset, u32 value)
{
u32 *dw = (u32 *) ptr + dw_offset;
*dw &= ~(mask << offset);
*dw |= (mask & value) << offset;
}
#define AMAP_SET_BITS(_struct, field, ptr, val) \
amap_set(ptr, \
offsetof(_struct, field)/32, \
amap_mask(sizeof(((_struct *)0)->field)), \
AMAP_BIT_OFFSET(_struct, field), \
val)
static inline u32 amap_get(void *ptr, u32 dw_offset, u32 mask, u32 offset)
{
u32 *dw = (u32 *) ptr;
return mask & (*(dw + dw_offset) >> offset);
}
#define AMAP_GET_BITS(_struct, field, ptr) \
amap_get(ptr, \
offsetof(_struct, field)/32, \
amap_mask(sizeof(((_struct *)0)->field)), \
AMAP_BIT_OFFSET(_struct, field))
#define be_dws_cpu_to_le(wrb, len) swap_dws(wrb, len)
#define be_dws_le_to_cpu(wrb, len) swap_dws(wrb, len)
static inline void swap_dws(void *wrb, int len)
{
#ifdef __BIG_ENDIAN
u32 *dw = wrb;
BUG_ON(len % 4);
do {
*dw = cpu_to_le32(*dw);
dw++;
len -= 4;
} while (len);
#endif /* __BIG_ENDIAN */
}
static inline u8 is_tcp_pkt(struct sk_buff *skb)
{
u8 val = 0;
if (ip_hdr(skb)->version == 4)
val = (ip_hdr(skb)->protocol == IPPROTO_TCP);
else if (ip_hdr(skb)->version == 6)
val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP);
return val;
}
static inline u8 is_udp_pkt(struct sk_buff *skb)
{
u8 val = 0;
if (ip_hdr(skb)->version == 4)
val = (ip_hdr(skb)->protocol == IPPROTO_UDP);
else if (ip_hdr(skb)->version == 6)
val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP);
return val;
}
static inline void be_check_sriov_fn_type(struct be_adapter *adapter)
{
u8 data;
pci_write_config_byte(adapter->pdev, 0xFE, 0xAA);
pci_read_config_byte(adapter->pdev, 0xFE, &data);
adapter->is_virtfn = (data != 0xAA);
}
static inline void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)
{
u32 addr;
addr = jhash(adapter->netdev->dev_addr, ETH_ALEN, 0);
mac[5] = (u8)(addr & 0xFF);
mac[4] = (u8)((addr >> 8) & 0xFF);
mac[3] = (u8)((addr >> 16) & 0xFF);
mac[2] = 0xC9;
mac[1] = 0x00;
mac[0] = 0x00;
}
extern void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm,
u16 num_popped);
extern void be_link_status_update(struct be_adapter *adapter, bool link_up);
extern void netdev_stats_update(struct be_adapter *adapter);
extern int be_load_fw(struct be_adapter *adapter, u8 *func);
#endif /* BE_H */
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