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/*
* This file is part of the Chelsio T4 Ethernet driver for Linux.
*
* Copyright (c) 2003-2010 Chelsio Communications, 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.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/bitmap.h>
#include <linux/crc32.h>
#include <linux/ctype.h>
#include <linux/debugfs.h>
#include <linux/err.h>
#include <linux/etherdevice.h>
#include <linux/firmware.h>
#include <linux/if_vlan.h>
#include <linux/init.h>
#include <linux/log2.h>
#include <linux/mdio.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/mutex.h>
#include <linux/netdevice.h>
#include <linux/pci.h>
#include <linux/aer.h>
#include <linux/rtnetlink.h>
#include <linux/sched.h>
#include <linux/seq_file.h>
#include <linux/sockios.h>
#include <linux/vmalloc.h>
#include <linux/workqueue.h>
#include <net/neighbour.h>
#include <net/netevent.h>
#include <asm/uaccess.h>
#include "cxgb4.h"
#include "t4_regs.h"
#include "t4_msg.h"
#include "t4fw_api.h"
#include "l2t.h"
#define DRV_DESC "Chelsio T4 Network Driver"
/*
* Max interrupt hold-off timer value in us. Queues fall back to this value
* under extreme memory pressure so it's largish to give the system time to
* recover.
*/
#define MAX_SGE_TIMERVAL 200U
Casey Leedom
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#ifdef CONFIG_PCI_IOV
/*
* Virtual Function provisioning constants. We need two extra Ingress Queues
* with Interrupt capability to serve as the VF's Firmware Event Queue and
* Forwarded Interrupt Queue (when using MSI mode) -- neither will have Free
* Lists associated with them). For each Ethernet/Control Egress Queue and
* for each Free List, we need an Egress Context.
*/
enum {
VFRES_NPORTS = 1, /* # of "ports" per VF */
VFRES_NQSETS = 2, /* # of "Queue Sets" per VF */
VFRES_NVI = VFRES_NPORTS, /* # of Virtual Interfaces */
VFRES_NETHCTRL = VFRES_NQSETS, /* # of EQs used for ETH or CTRL Qs */
VFRES_NIQFLINT = VFRES_NQSETS+2,/* # of ingress Qs/w Free List(s)/intr */
VFRES_NIQ = 0, /* # of non-fl/int ingress queues */
VFRES_NEQ = VFRES_NQSETS*2, /* # of egress queues */
VFRES_TC = 0, /* PCI-E traffic class */
VFRES_NEXACTF = 16, /* # of exact MPS filters */
VFRES_R_CAPS = FW_CMD_CAP_DMAQ|FW_CMD_CAP_VF|FW_CMD_CAP_PORT,
VFRES_WX_CAPS = FW_CMD_CAP_DMAQ|FW_CMD_CAP_VF,
};
/*
* Provide a Port Access Rights Mask for the specified PF/VF. This is very
* static and likely not to be useful in the long run. We really need to
* implement some form of persistent configuration which the firmware
* controls.
*/
static unsigned int pfvfres_pmask(struct adapter *adapter,
unsigned int pf, unsigned int vf)
{
unsigned int portn, portvec;
/*
* Give PF's access to all of the ports.
*/
if (vf == 0)
return FW_PFVF_CMD_PMASK_MASK;
/*
* For VFs, we'll assign them access to the ports based purely on the
* PF. We assign active ports in order, wrapping around if there are
* fewer active ports than PFs: e.g. active port[pf % nports].
* Unfortunately the adapter's port_info structs haven't been
* initialized yet so we have to compute this.
*/
if (adapter->params.nports == 0)
return 0;
portn = pf % adapter->params.nports;
portvec = adapter->params.portvec;
for (;;) {
/*
* Isolate the lowest set bit in the port vector. If we're at
* the port number that we want, return that as the pmask.
* otherwise mask that bit out of the port vector and
* decrement our port number ...
*/
unsigned int pmask = portvec ^ (portvec & (portvec-1));
if (portn == 0)
return pmask;
portn--;
portvec &= ~pmask;
}
/*NOTREACHED*/
}
#endif
enum {
MEMWIN0_APERTURE = 65536,
MEMWIN0_BASE = 0x30000,
MEMWIN1_APERTURE = 32768,
MEMWIN1_BASE = 0x28000,
MEMWIN2_APERTURE = 2048,
MEMWIN2_BASE = 0x1b800,
};
enum {
MAX_TXQ_ENTRIES = 16384,
MAX_CTRL_TXQ_ENTRIES = 1024,
MAX_RSPQ_ENTRIES = 16384,
MAX_RX_BUFFERS = 16384,
MIN_TXQ_ENTRIES = 32,
MIN_CTRL_TXQ_ENTRIES = 32,
MIN_RSPQ_ENTRIES = 128,
MIN_FL_ENTRIES = 16
};
#define DFLT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | \
NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP |\
NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
#define CH_DEVICE(devid, data) { PCI_VDEVICE(CHELSIO, devid), (data) }
static DEFINE_PCI_DEVICE_TABLE(cxgb4_pci_tbl) = {
CH_DEVICE(0xa000, 0), /* PE10K */
CH_DEVICE(0x4001, -1),
CH_DEVICE(0x4002, -1),
CH_DEVICE(0x4003, -1),
CH_DEVICE(0x4004, -1),
CH_DEVICE(0x4005, -1),
CH_DEVICE(0x4006, -1),
CH_DEVICE(0x4007, -1),
CH_DEVICE(0x4008, -1),
CH_DEVICE(0x4009, -1),
CH_DEVICE(0x400a, -1),
CH_DEVICE(0x4401, 4),
CH_DEVICE(0x4402, 4),
CH_DEVICE(0x4403, 4),
CH_DEVICE(0x4404, 4),
CH_DEVICE(0x4405, 4),
CH_DEVICE(0x4406, 4),
CH_DEVICE(0x4407, 4),
CH_DEVICE(0x4408, 4),
CH_DEVICE(0x4409, 4),
CH_DEVICE(0x440a, 4),
{ 0, }
};
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