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linux-next/drivers/net/vxge/vxge-main.h
Jon Mason 16fded7da2 vxge: MSIX one shot mode 
To reduce the possibility of losing an interrupt in the handler due to a
race between an interrupt processing and disable/enable of interrupts,
enable MSIX one shot.

Also, add support for adaptive interrupt coalesing

Signed-off-by: Jon Mason <jon.mason@exar.com>
Signed-off-by: Masroor Vettuparambil <masroor.vettuparambil@exar.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-01-19 23:18:14 -08:00

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/******************************************************************************
* This software may be used and distributed according to the terms of
* the GNU General Public License (GPL), incorporated herein by reference.
* Drivers based on or derived from this code fall under the GPL and must
* retain the authorship, copyright and license notice. This file is not
* a complete program and may only be used when the entire operating
* system is licensed under the GPL.
* See the file COPYING in this distribution for more information.
*
* vxge-main.h: Driver for Exar Corp's X3100 Series 10GbE PCIe I/O
* Virtualized Server Adapter.
* Copyright(c) 2002-2010 Exar Corp.
******************************************************************************/
#ifndef VXGE_MAIN_H
#define VXGE_MAIN_H
#include "vxge-traffic.h"
#include "vxge-config.h"
#include "vxge-version.h"
#include <linux/list.h>
#define VXGE_DRIVER_NAME "vxge"
#define VXGE_DRIVER_VENDOR "Neterion, Inc"
#define VXGE_DRIVER_FW_VERSION_MAJOR 1
#define DRV_VERSION VXGE_VERSION_MAJOR"."VXGE_VERSION_MINOR"."\
VXGE_VERSION_FIX"."VXGE_VERSION_BUILD"-"\
VXGE_VERSION_FOR
#define PCI_DEVICE_ID_TITAN_WIN 0x5733
#define PCI_DEVICE_ID_TITAN_UNI 0x5833
#define VXGE_HW_TITAN1_PCI_REVISION 1
#define VXGE_HW_TITAN1A_PCI_REVISION 2
#define VXGE_USE_DEFAULT 0xffffffff
#define VXGE_HW_VPATH_MSIX_ACTIVE 4
#define VXGE_ALARM_MSIX_ID 2
#define VXGE_HW_RXSYNC_FREQ_CNT 4
#define VXGE_LL_WATCH_DOG_TIMEOUT (15 * HZ)
#define VXGE_LL_RX_COPY_THRESHOLD 256
#define VXGE_DEF_FIFO_LENGTH 84
#define NO_STEERING 0
#define PORT_STEERING 0x1
#define RTH_STEERING 0x2
#define RX_TOS_STEERING 0x3
#define RX_VLAN_STEERING 0x4
#define RTH_BUCKET_SIZE 4
#define TX_PRIORITY_STEERING 1
#define TX_VLAN_STEERING 2
#define TX_PORT_STEERING 3
#define TX_MULTIQ_STEERING 4
#define VXGE_HW_MAC_ADDR_LEARN_DEFAULT VXGE_HW_RTS_MAC_DISABLE
#define VXGE_TTI_BTIMER_VAL 250000
#define VXGE_TTI_LTIMER_VAL 1000
#define VXGE_T1A_TTI_LTIMER_VAL 80
#define VXGE_TTI_RTIMER_VAL 0
#define VXGE_TTI_RTIMER_ADAPT_VAL 10
#define VXGE_T1A_TTI_RTIMER_VAL 400
#define VXGE_RTI_BTIMER_VAL 250
#define VXGE_RTI_LTIMER_VAL 100
#define VXGE_RTI_RTIMER_VAL 0
#define VXGE_RTI_RTIMER_ADAPT_VAL 15
#define VXGE_FIFO_INDICATE_MAX_PKTS VXGE_DEF_FIFO_LENGTH
#define VXGE_ISR_POLLING_CNT 8
#define VXGE_MAX_CONFIG_DEV 0xFF
#define VXGE_EXEC_MODE_DISABLE 0
#define VXGE_EXEC_MODE_ENABLE 1
#define VXGE_MAX_CONFIG_PORT 1
#define VXGE_ALL_VID_DISABLE 0
#define VXGE_ALL_VID_ENABLE 1
#define VXGE_PAUSE_CTRL_DISABLE 0
#define VXGE_PAUSE_CTRL_ENABLE 1
#define TTI_TX_URANGE_A 5
#define TTI_TX_URANGE_B 15
#define TTI_TX_URANGE_C 40
#define TTI_TX_UFC_A 5
#define TTI_TX_UFC_B 40
#define TTI_TX_UFC_C 60
#define TTI_TX_UFC_D 100
#define TTI_T1A_TX_UFC_A 30
#define TTI_T1A_TX_UFC_B 80
/* Slope - (max_mtu - min_mtu)/(max_mtu_ufc - min_mtu_ufc) */
/* Slope - 93 */
/* 60 - 9k Mtu, 140 - 1.5k mtu */
#define TTI_T1A_TX_UFC_C(mtu) (60 + ((VXGE_HW_MAX_MTU - mtu) / 93))
/* Slope - 37 */
/* 100 - 9k Mtu, 300 - 1.5k mtu */
#define TTI_T1A_TX_UFC_D(mtu) (100 + ((VXGE_HW_MAX_MTU - mtu) / 37))
#define RTI_RX_URANGE_A 5
#define RTI_RX_URANGE_B 15
#define RTI_RX_URANGE_C 40
#define RTI_T1A_RX_URANGE_A 1
#define RTI_T1A_RX_URANGE_B 20
#define RTI_T1A_RX_URANGE_C 50
#define RTI_RX_UFC_A 1
#define RTI_RX_UFC_B 5
#define RTI_RX_UFC_C 10
#define RTI_RX_UFC_D 15
#define RTI_T1A_RX_UFC_B 20
#define RTI_T1A_RX_UFC_C 50
#define RTI_T1A_RX_UFC_D 60
/*
* The interrupt rate is maintained at 3k per second with the moderation
* parameters for most traffic but not all. This is the maximum interrupt
* count allowed per function with INTA or per vector in the case of
* MSI-X in a 10 millisecond time period. Enabled only for Titan 1A.
*/
#define VXGE_T1A_MAX_INTERRUPT_COUNT 100
#define VXGE_T1A_MAX_TX_INTERRUPT_COUNT 200
/* Milli secs timer period */
#define VXGE_TIMER_DELAY 10000
#define VXGE_LL_MAX_FRAME_SIZE(dev) ((dev)->mtu + VXGE_HW_MAC_HEADER_MAX_SIZE)
#define is_sriov(function_mode) \
((function_mode == VXGE_HW_FUNCTION_MODE_SRIOV) || \
(function_mode == VXGE_HW_FUNCTION_MODE_SRIOV_8) || \
(function_mode == VXGE_HW_FUNCTION_MODE_SRIOV_4))
enum vxge_reset_event {
/* reset events */
VXGE_LL_VPATH_RESET = 0,
VXGE_LL_DEVICE_RESET = 1,
VXGE_LL_FULL_RESET = 2,
VXGE_LL_START_RESET = 3,
VXGE_LL_COMPL_RESET = 4
};
/* These flags represent the devices temporary state */
enum vxge_device_state_t {
__VXGE_STATE_RESET_CARD = 0,
__VXGE_STATE_CARD_UP
};
enum vxge_mac_addr_state {
/* mac address states */
VXGE_LL_MAC_ADDR_IN_LIST = 0,
VXGE_LL_MAC_ADDR_IN_DA_TABLE = 1
};
struct vxge_drv_config {
int config_dev_cnt;
int total_dev_cnt;
int g_no_cpus;
unsigned int vpath_per_dev;
};
struct macInfo {
unsigned char macaddr[ETH_ALEN];
unsigned char macmask[ETH_ALEN];
unsigned int vpath_no;
enum vxge_mac_addr_state state;
};
struct vxge_config {
int tx_pause_enable;
int rx_pause_enable;
#define NEW_NAPI_WEIGHT 64
int napi_weight;
#define VXGE_GRO_DONOT_AGGREGATE 0
#define VXGE_GRO_ALWAYS_AGGREGATE 1
int gro_enable;
int intr_type;
#define INTA 0
#define MSI 1
#define MSI_X 2
int addr_learn_en;
u32 rth_steering:2,
rth_algorithm:2,
rth_hash_type_tcpipv4:1,
rth_hash_type_ipv4:1,
rth_hash_type_tcpipv6:1,
rth_hash_type_ipv6:1,
rth_hash_type_tcpipv6ex:1,
rth_hash_type_ipv6ex:1,
rth_bkt_sz:8;
int rth_jhash_golden_ratio;
int tx_steering_type;
int fifo_indicate_max_pkts;
struct vxge_hw_device_hw_info device_hw_info;
};
struct vxge_msix_entry {
/* Mimicing the msix_entry struct of Kernel. */
u16 vector;
u16 entry;
u16 in_use;
void *arg;
};
/* Software Statistics */
struct vxge_sw_stats {
/* Network Stats (interface stats) */
/* Tx */
u64 tx_frms;
u64 tx_errors;
u64 tx_bytes;
u64 txd_not_free;
u64 txd_out_of_desc;
/* Virtual Path */
u64 vpaths_open;
u64 vpath_open_fail;
/* Rx */
u64 rx_frms;
u64 rx_errors;
u64 rx_bytes;
u64 rx_mcast;
/* Misc. */
u64 link_up;
u64 link_down;
u64 pci_map_fail;
u64 skb_alloc_fail;
};
struct vxge_mac_addrs {
struct list_head item;
u64 macaddr;
u64 macmask;
enum vxge_mac_addr_state state;
};
struct vxgedev;
struct vxge_fifo_stats {
u64 tx_frms;
u64 tx_errors;
u64 tx_bytes;
u64 txd_not_free;
u64 txd_out_of_desc;
u64 pci_map_fail;
};
struct vxge_fifo {
struct net_device *ndev;
struct pci_dev *pdev;
struct __vxge_hw_fifo *handle;
struct netdev_queue *txq;
int tx_steering_type;
int indicate_max_pkts;
/* Adaptive interrupt moderation parameters used in T1A */
unsigned long interrupt_count;
unsigned long jiffies;
u32 tx_vector_no;
/* Tx stats */
struct vxge_fifo_stats stats;
} ____cacheline_aligned;
struct vxge_ring_stats {
u64 prev_rx_frms;
u64 rx_frms;
u64 rx_errors;
u64 rx_dropped;
u64 rx_bytes;
u64 rx_mcast;
u64 pci_map_fail;
u64 skb_alloc_fail;
};
struct vxge_ring {
struct net_device *ndev;
struct pci_dev *pdev;
struct __vxge_hw_ring *handle;
/* The vpath id maintained in the driver -
* 0 to 'maximum_vpaths_in_function - 1'
*/
int driver_id;
/* Adaptive interrupt moderation parameters used in T1A */
unsigned long interrupt_count;
unsigned long jiffies;
/* copy of the flag indicating whether rx_csum is to be used */
u32 rx_csum:1,
rx_hwts:1;
int pkts_processed;
int budget;
int gro_enable;
struct napi_struct napi;
struct napi_struct *napi_p;
#define VXGE_MAX_MAC_ADDR_COUNT 30
int vlan_tag_strip;
struct vlan_group *vlgrp;
u32 rx_vector_no;
enum vxge_hw_status last_status;
/* Rx stats */
struct vxge_ring_stats stats;
} ____cacheline_aligned;
struct vxge_vpath {
struct vxge_fifo fifo;
struct vxge_ring ring;
struct __vxge_hw_vpath_handle *handle;
/* Actual vpath id for this vpath in the device - 0 to 16 */
int device_id;
int max_mac_addr_cnt;
int is_configured;
int is_open;
struct vxgedev *vdev;
u8 macaddr[ETH_ALEN];
u8 macmask[ETH_ALEN];
#define VXGE_MAX_LEARN_MAC_ADDR_CNT 2048
/* mac addresses currently programmed into NIC */
u16 mac_addr_cnt;
u16 mcast_addr_cnt;
struct list_head mac_addr_list;
u32 level_err;
u32 level_trace;
};
#define VXGE_COPY_DEBUG_INFO_TO_LL(vdev, err, trace) { \
for (i = 0; i < vdev->no_of_vpath; i++) { \
vdev->vpaths[i].level_err = err; \
vdev->vpaths[i].level_trace = trace; \
} \
vdev->level_err = err; \
vdev->level_trace = trace; \
}
struct vxgedev {
struct net_device *ndev;
struct pci_dev *pdev;
struct __vxge_hw_device *devh;
struct vlan_group *vlgrp;
int vlan_tag_strip;
struct vxge_config config;
unsigned long state;
/* Indicates which vpath to reset */
unsigned long vp_reset;
/* Timer used for polling vpath resets */
struct timer_list vp_reset_timer;
/* Timer used for polling vpath lockup */
struct timer_list vp_lockup_timer;
/*
* Flags to track whether device is in All Multicast
* or in promiscuous mode.
*/
u16 all_multi_flg;
/* A flag indicating whether rx_csum is to be used or not. */
u32 rx_csum:1,
rx_hwts:1,
titan1:1;
struct vxge_msix_entry *vxge_entries;
struct msix_entry *entries;
/*
* 4 for each vpath * 17;
* total is 68
*/
#define VXGE_MAX_REQUESTED_MSIX 68
#define VXGE_INTR_STRLEN 80
char desc[VXGE_MAX_REQUESTED_MSIX][VXGE_INTR_STRLEN];
enum vxge_hw_event cric_err_event;
int max_vpath_supported;
int no_of_vpath;
struct napi_struct napi;
/* A debug option, when enabled and if error condition occurs,
* the driver will do following steps:
* - mask all interrupts
* - Not clear the source of the alarm
* - gracefully stop all I/O
* A diagnostic dump of register and stats at this point
* reveals very useful information.
*/
int exec_mode;
int max_config_port;
struct vxge_vpath *vpaths;
struct __vxge_hw_vpath_handle *vp_handles[VXGE_HW_MAX_VIRTUAL_PATHS];
void __iomem *bar0;
struct vxge_sw_stats stats;
int mtu;
/* Below variables are used for vpath selection to transmit a packet */
u8 vpath_selector[VXGE_HW_MAX_VIRTUAL_PATHS];
u64 vpaths_deployed;
u32 intr_cnt;
u32 level_err;
u32 level_trace;
char fw_version[VXGE_HW_FW_STRLEN];
struct work_struct reset_task;
};
struct vxge_rx_priv {
struct sk_buff *skb;
unsigned char *skb_data;
dma_addr_t data_dma;
dma_addr_t data_size;
};
struct vxge_tx_priv {
struct sk_buff *skb;
dma_addr_t dma_buffers[MAX_SKB_FRAGS+1];
};
#define VXGE_MODULE_PARAM_INT(p, val) \
static int p = val; \
module_param(p, int, 0)
#define vxge_os_timer(timer, handle, arg, exp) do { \
init_timer(&timer); \
timer.function = handle; \
timer.data = (unsigned long) arg; \
mod_timer(&timer, (jiffies + exp)); \
} while (0);
void vxge_initialize_ethtool_ops(struct net_device *ndev);
enum vxge_hw_status vxge_reset_all_vpaths(struct vxgedev *vdev);
int vxge_fw_upgrade(struct vxgedev *vdev, char *fw_name, int override);
/**
* #define VXGE_DEBUG_INIT: debug for initialization functions
* #define VXGE_DEBUG_TX : debug transmit related functions
* #define VXGE_DEBUG_RX : debug recevice related functions
* #define VXGE_DEBUG_MEM : debug memory module
* #define VXGE_DEBUG_LOCK: debug locks
* #define VXGE_DEBUG_SEM : debug semaphore
* #define VXGE_DEBUG_ENTRYEXIT: debug functions by adding entry exit statements
*/
#define VXGE_DEBUG_INIT 0x00000001
#define VXGE_DEBUG_TX 0x00000002
#define VXGE_DEBUG_RX 0x00000004
#define VXGE_DEBUG_MEM 0x00000008
#define VXGE_DEBUG_LOCK 0x00000010
#define VXGE_DEBUG_SEM 0x00000020
#define VXGE_DEBUG_ENTRYEXIT 0x00000040
#define VXGE_DEBUG_INTR 0x00000080
#define VXGE_DEBUG_LL_CONFIG 0x00000100
/* Debug tracing for VXGE driver */
#ifndef VXGE_DEBUG_MASK
#define VXGE_DEBUG_MASK 0x0
#endif
#if (VXGE_DEBUG_LL_CONFIG & VXGE_DEBUG_MASK)
#define vxge_debug_ll_config(level, fmt, ...) \
vxge_debug_ll(level, VXGE_DEBUG_LL_CONFIG, fmt, __VA_ARGS__)
#else
#define vxge_debug_ll_config(level, fmt, ...)
#endif
#if (VXGE_DEBUG_INIT & VXGE_DEBUG_MASK)
#define vxge_debug_init(level, fmt, ...) \
vxge_debug_ll(level, VXGE_DEBUG_INIT, fmt, __VA_ARGS__)
#else
#define vxge_debug_init(level, fmt, ...)
#endif
#if (VXGE_DEBUG_TX & VXGE_DEBUG_MASK)
#define vxge_debug_tx(level, fmt, ...) \
vxge_debug_ll(level, VXGE_DEBUG_TX, fmt, __VA_ARGS__)
#else
#define vxge_debug_tx(level, fmt, ...)
#endif
#if (VXGE_DEBUG_RX & VXGE_DEBUG_MASK)
#define vxge_debug_rx(level, fmt, ...) \
vxge_debug_ll(level, VXGE_DEBUG_RX, fmt, __VA_ARGS__)
#else
#define vxge_debug_rx(level, fmt, ...)
#endif
#if (VXGE_DEBUG_MEM & VXGE_DEBUG_MASK)
#define vxge_debug_mem(level, fmt, ...) \
vxge_debug_ll(level, VXGE_DEBUG_MEM, fmt, __VA_ARGS__)
#else
#define vxge_debug_mem(level, fmt, ...)
#endif
#if (VXGE_DEBUG_ENTRYEXIT & VXGE_DEBUG_MASK)
#define vxge_debug_entryexit(level, fmt, ...) \
vxge_debug_ll(level, VXGE_DEBUG_ENTRYEXIT, fmt, __VA_ARGS__)
#else
#define vxge_debug_entryexit(level, fmt, ...)
#endif
#if (VXGE_DEBUG_INTR & VXGE_DEBUG_MASK)
#define vxge_debug_intr(level, fmt, ...) \
vxge_debug_ll(level, VXGE_DEBUG_INTR, fmt, __VA_ARGS__)
#else
#define vxge_debug_intr(level, fmt, ...)
#endif
#define VXGE_DEVICE_DEBUG_LEVEL_SET(level, mask, vdev) {\
vxge_hw_device_debug_set((struct __vxge_hw_device *)vdev->devh, \
level, mask);\
VXGE_COPY_DEBUG_INFO_TO_LL(vdev, \
vxge_hw_device_error_level_get((struct __vxge_hw_device *) \
vdev->devh), \
vxge_hw_device_trace_level_get((struct __vxge_hw_device *) \
vdev->devh));\
}
#ifdef NETIF_F_GSO
#define vxge_tcp_mss(skb) (skb_shinfo(skb)->gso_size)
#define vxge_udp_mss(skb) (skb_shinfo(skb)->gso_size)
#define vxge_offload_type(skb) (skb_shinfo(skb)->gso_type)
#endif
#endif
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