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Several devices have multiple independant RX queues per net device, and some have a single interrupt doorbell for several queues. In either case, it's easier to support layouts like that if the structure representing the poll is independant from the net device itself. The signature of the ->poll() call back goes from: int foo_poll(struct net_device *dev, int *budget) to int foo_poll(struct napi_struct *napi, int budget) The caller is returned the number of RX packets processed (or the number of "NAPI credits" consumed if you want to get abstract). The callee no longer messes around bumping dev->quota, *budget, etc. because that is all handled in the caller upon return. The napi_struct is to be embedded in the device driver private data structures. Furthermore, it is the driver's responsibility to disable all NAPI instances in it's ->stop() device close handler. Since the napi_struct is privatized into the driver's private data structures, only the driver knows how to get at all of the napi_struct instances it may have per-device. With lots of help and suggestions from Rusty Russell, Roland Dreier, Michael Chan, Jeff Garzik, and Jamal Hadi Salim. Bug fixes from Thomas Graf, Roland Dreier, Peter Zijlstra, Joseph Fannin, Scott Wood, Hans J. Koch, and Michael Chan. [ Ported to current tree and all drivers converted. Integrated Stephen's follow-on kerneldoc additions, and restored poll_list handling to the old style to fix mutual exclusion issues. -DaveM ] Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
392 lines
12 KiB
C
392 lines
12 KiB
C
/*****************************************************************************
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* *
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* File: common.h *
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* $Revision: 1.21 $ *
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* $Date: 2005/06/22 00:43:25 $ *
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* Description: *
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* part of the Chelsio 10Gb Ethernet Driver. *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License, version 2, as *
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* published by the Free Software Foundation. *
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* *
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* You should have received a copy of the GNU General Public License along *
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* with this program; if not, write to the Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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* *
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED *
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF *
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. *
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* *
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* http://www.chelsio.com *
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* *
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* Copyright (c) 2003 - 2005 Chelsio Communications, Inc. *
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* All rights reserved. *
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* *
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* Maintainers: maintainers@chelsio.com *
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* *
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* Authors: Dimitrios Michailidis <dm@chelsio.com> *
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* Tina Yang <tainay@chelsio.com> *
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* Felix Marti <felix@chelsio.com> *
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* Scott Bardone <sbardone@chelsio.com> *
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* Kurt Ottaway <kottaway@chelsio.com> *
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* Frank DiMambro <frank@chelsio.com> *
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* *
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* History: *
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* *
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****************************************************************************/
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#ifndef _CXGB_COMMON_H_
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#define _CXGB_COMMON_H_
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#include <linux/types.h>
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#include <linux/delay.h>
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#include <linux/pci.h>
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#include <linux/ethtool.h>
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#include <linux/if_vlan.h>
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#include <linux/mii.h>
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#include <linux/crc32.h>
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#include <linux/init.h>
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#include <asm/io.h>
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#include <linux/pci_ids.h>
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#define DRV_DESCRIPTION "Chelsio 10Gb Ethernet Driver"
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#define DRV_NAME "cxgb"
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#define DRV_VERSION "2.2"
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#define PFX DRV_NAME ": "
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#define CH_ERR(fmt, ...) printk(KERN_ERR PFX fmt, ## __VA_ARGS__)
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#define CH_WARN(fmt, ...) printk(KERN_WARNING PFX fmt, ## __VA_ARGS__)
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#define CH_ALERT(fmt, ...) printk(KERN_ALERT PFX fmt, ## __VA_ARGS__)
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/*
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* More powerful macro that selectively prints messages based on msg_enable.
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* For info and debugging messages.
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*/
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#define CH_MSG(adapter, level, category, fmt, ...) do { \
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if ((adapter)->msg_enable & NETIF_MSG_##category) \
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printk(KERN_##level PFX "%s: " fmt, (adapter)->name, \
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## __VA_ARGS__); \
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} while (0)
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#ifdef DEBUG
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# define CH_DBG(adapter, category, fmt, ...) \
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CH_MSG(adapter, DEBUG, category, fmt, ## __VA_ARGS__)
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#else
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# define CH_DBG(fmt, ...)
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#endif
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#define CH_DEVICE(devid, ssid, idx) \
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{ PCI_VENDOR_ID_CHELSIO, devid, PCI_ANY_ID, ssid, 0, 0, idx }
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#define SUPPORTED_PAUSE (1 << 13)
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#define SUPPORTED_LOOPBACK (1 << 15)
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#define ADVERTISED_PAUSE (1 << 13)
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#define ADVERTISED_ASYM_PAUSE (1 << 14)
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typedef struct adapter adapter_t;
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struct t1_rx_mode {
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struct net_device *dev;
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u32 idx;
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struct dev_mc_list *list;
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};
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#define t1_rx_mode_promisc(rm) (rm->dev->flags & IFF_PROMISC)
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#define t1_rx_mode_allmulti(rm) (rm->dev->flags & IFF_ALLMULTI)
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#define t1_rx_mode_mc_cnt(rm) (rm->dev->mc_count)
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static inline u8 *t1_get_next_mcaddr(struct t1_rx_mode *rm)
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{
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u8 *addr = NULL;
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if (rm->idx++ < rm->dev->mc_count) {
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addr = rm->list->dmi_addr;
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rm->list = rm->list->next;
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}
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return addr;
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}
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#define MAX_NPORTS 4
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#define PORT_MASK ((1 << MAX_NPORTS) - 1)
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#define NMTUS 8
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#define TCB_SIZE 128
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#define SPEED_INVALID 0xffff
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#define DUPLEX_INVALID 0xff
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enum {
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CHBT_BOARD_N110,
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CHBT_BOARD_N210,
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CHBT_BOARD_7500,
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CHBT_BOARD_8000,
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CHBT_BOARD_CHT101,
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CHBT_BOARD_CHT110,
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CHBT_BOARD_CHT210,
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CHBT_BOARD_CHT204,
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CHBT_BOARD_CHT204V,
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CHBT_BOARD_CHT204E,
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CHBT_BOARD_CHN204,
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CHBT_BOARD_COUGAR,
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CHBT_BOARD_6800,
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CHBT_BOARD_SIMUL,
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};
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enum {
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CHBT_TERM_FPGA,
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CHBT_TERM_T1,
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CHBT_TERM_T2,
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CHBT_TERM_T3
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};
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enum {
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CHBT_MAC_CHELSIO_A,
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CHBT_MAC_IXF1010,
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CHBT_MAC_PM3393,
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CHBT_MAC_VSC7321,
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CHBT_MAC_DUMMY
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};
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enum {
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CHBT_PHY_88E1041,
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CHBT_PHY_88E1111,
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CHBT_PHY_88X2010,
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CHBT_PHY_XPAK,
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CHBT_PHY_MY3126,
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CHBT_PHY_8244,
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CHBT_PHY_DUMMY
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};
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enum {
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PAUSE_RX = 1 << 0,
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PAUSE_TX = 1 << 1,
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PAUSE_AUTONEG = 1 << 2
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};
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/* Revisions of T1 chip */
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enum {
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TERM_T1A = 0,
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TERM_T1B = 1,
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TERM_T2 = 3
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};
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struct sge_params {
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unsigned int cmdQ_size[2];
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unsigned int freelQ_size[2];
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unsigned int large_buf_capacity;
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unsigned int rx_coalesce_usecs;
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unsigned int last_rx_coalesce_raw;
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unsigned int default_rx_coalesce_usecs;
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unsigned int sample_interval_usecs;
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unsigned int coalesce_enable;
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unsigned int polling;
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};
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struct chelsio_pci_params {
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unsigned short speed;
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unsigned char width;
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unsigned char is_pcix;
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};
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struct tp_params {
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unsigned int pm_size;
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unsigned int cm_size;
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unsigned int pm_rx_base;
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unsigned int pm_tx_base;
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unsigned int pm_rx_pg_size;
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unsigned int pm_tx_pg_size;
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unsigned int pm_rx_num_pgs;
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unsigned int pm_tx_num_pgs;
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unsigned int rx_coalescing_size;
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unsigned int use_5tuple_mode;
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};
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struct mc5_params {
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unsigned int mode; /* selects MC5 width */
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unsigned int nservers; /* size of server region */
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unsigned int nroutes; /* size of routing region */
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};
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/* Default MC5 region sizes */
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#define DEFAULT_SERVER_REGION_LEN 256
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#define DEFAULT_RT_REGION_LEN 1024
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struct adapter_params {
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struct sge_params sge;
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struct mc5_params mc5;
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struct tp_params tp;
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struct chelsio_pci_params pci;
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const struct board_info *brd_info;
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unsigned short mtus[NMTUS];
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unsigned int nports; /* # of ethernet ports */
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unsigned int stats_update_period;
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unsigned short chip_revision;
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unsigned char chip_version;
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unsigned char is_asic;
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unsigned char has_msi;
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};
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struct link_config {
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unsigned int supported; /* link capabilities */
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unsigned int advertising; /* advertised capabilities */
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unsigned short requested_speed; /* speed user has requested */
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unsigned short speed; /* actual link speed */
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unsigned char requested_duplex; /* duplex user has requested */
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unsigned char duplex; /* actual link duplex */
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unsigned char requested_fc; /* flow control user has requested */
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unsigned char fc; /* actual link flow control */
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unsigned char autoneg; /* autonegotiating? */
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};
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struct cmac;
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struct cphy;
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struct port_info {
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struct net_device *dev;
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struct cmac *mac;
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struct cphy *phy;
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struct link_config link_config;
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struct net_device_stats netstats;
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};
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struct sge;
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struct peespi;
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struct adapter {
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u8 __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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u32 mmio_len;
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struct work_struct ext_intr_handler_task;
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struct adapter_params params;
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struct vlan_group *vlan_grp;
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/* Terminator modules. */
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struct sge *sge;
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struct peespi *espi;
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struct petp *tp;
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struct napi_struct napi;
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struct port_info port[MAX_NPORTS];
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struct delayed_work stats_update_task;
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struct timer_list stats_update_timer;
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spinlock_t tpi_lock;
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spinlock_t work_lock;
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spinlock_t mac_lock;
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/* guards async operations */
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spinlock_t async_lock ____cacheline_aligned;
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u32 slow_intr_mask;
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int t1powersave;
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};
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enum { /* adapter flags */
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FULL_INIT_DONE = 1 << 0,
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TSO_CAPABLE = 1 << 2,
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TCP_CSUM_CAPABLE = 1 << 3,
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UDP_CSUM_CAPABLE = 1 << 4,
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VLAN_ACCEL_CAPABLE = 1 << 5,
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RX_CSUM_ENABLED = 1 << 6,
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};
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struct mdio_ops;
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struct gmac;
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struct gphy;
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struct board_info {
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unsigned char board;
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unsigned char port_number;
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unsigned long caps;
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unsigned char chip_term;
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unsigned char chip_mac;
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unsigned char chip_phy;
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unsigned int clock_core;
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unsigned int clock_mc3;
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unsigned int clock_mc4;
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unsigned int espi_nports;
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unsigned int clock_cspi;
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unsigned int clock_elmer0;
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unsigned char mdio_mdien;
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unsigned char mdio_mdiinv;
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unsigned char mdio_mdc;
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unsigned char mdio_phybaseaddr;
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const struct gmac *gmac;
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const struct gphy *gphy;
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const struct mdio_ops *mdio_ops;
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const char *desc;
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};
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static inline int t1_is_asic(const adapter_t *adapter)
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{
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return adapter->params.is_asic;
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}
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extern struct pci_device_id t1_pci_tbl[];
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static inline int adapter_matches_type(const adapter_t *adapter,
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int version, int revision)
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{
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return adapter->params.chip_version == version &&
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adapter->params.chip_revision == revision;
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}
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#define t1_is_T1B(adap) adapter_matches_type(adap, CHBT_TERM_T1, TERM_T1B)
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#define is_T2(adap) adapter_matches_type(adap, CHBT_TERM_T2, TERM_T2)
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/* Returns true if an adapter supports VLAN acceleration and TSO */
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static inline int vlan_tso_capable(const adapter_t *adapter)
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{
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return !t1_is_T1B(adapter);
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}
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#define for_each_port(adapter, iter) \
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for (iter = 0; iter < (adapter)->params.nports; ++iter)
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#define board_info(adapter) ((adapter)->params.brd_info)
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#define is_10G(adapter) (board_info(adapter)->caps & SUPPORTED_10000baseT_Full)
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static inline unsigned int core_ticks_per_usec(const adapter_t *adap)
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{
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return board_info(adap)->clock_core / 1000000;
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}
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extern int __t1_tpi_read(adapter_t *adapter, u32 addr, u32 *valp);
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extern int __t1_tpi_write(adapter_t *adapter, u32 addr, u32 value);
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extern int t1_tpi_write(adapter_t *adapter, u32 addr, u32 value);
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extern int t1_tpi_read(adapter_t *adapter, u32 addr, u32 *value);
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extern void t1_interrupts_enable(adapter_t *adapter);
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extern void t1_interrupts_disable(adapter_t *adapter);
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extern void t1_interrupts_clear(adapter_t *adapter);
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extern int t1_elmer0_ext_intr_handler(adapter_t *adapter);
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extern int t1_slow_intr_handler(adapter_t *adapter);
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extern int t1_link_start(struct cphy *phy, struct cmac *mac, struct link_config *lc);
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extern const struct board_info *t1_get_board_info(unsigned int board_id);
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extern const struct board_info *t1_get_board_info_from_ids(unsigned int devid,
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unsigned short ssid);
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extern int t1_seeprom_read(adapter_t *adapter, u32 addr, u32 *data);
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extern int t1_get_board_rev(adapter_t *adapter, const struct board_info *bi,
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struct adapter_params *p);
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extern int t1_init_hw_modules(adapter_t *adapter);
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extern int t1_init_sw_modules(adapter_t *adapter, const struct board_info *bi);
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extern void t1_free_sw_modules(adapter_t *adapter);
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extern void t1_fatal_err(adapter_t *adapter);
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extern void t1_link_changed(adapter_t *adapter, int port_id);
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extern void t1_link_negotiated(adapter_t *adapter, int port_id, int link_stat,
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int speed, int duplex, int pause);
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#endif /* _CXGB_COMMON_H_ */
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