cxgb4_main.c 131.8 KB
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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>
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#include <linux/if.h>
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#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"

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#define DRV_VERSION "1.3.0-ko"
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#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

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enum {
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	/*
	 * Physical Function provisioning constants.
	 */
	PFRES_NVI = 4,			/* # of Virtual Interfaces */
	PFRES_NETHCTRL = 128,		/* # of EQs used for ETH or CTRL Qs */
	PFRES_NIQFLINT = 128,		/* # of ingress Qs/w Free List(s)/intr
					 */
	PFRES_NEQ = 256,		/* # of egress queues */
	PFRES_NIQ = 0,			/* # of ingress queues */
	PFRES_TC = 0,			/* PCI-E traffic class */
	PFRES_NEXACTF = 128,		/* # of exact MPS filters */

	PFRES_R_CAPS = FW_CMD_CAP_PF,
	PFRES_WX_CAPS = FW_CMD_CAP_PF,

#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.
	 */
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	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_NEQ = VFRES_NQSETS*2,	/* # of egress queues */
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	VFRES_NIQ = 0,			/* # of non-fl/int ingress queues */
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	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,
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#endif
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};

/*
 * 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*/
}

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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
};

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/* Host shadow copy of ingress filter entry.  This is in host native format
 * and doesn't match the ordering or bit order, etc. of the hardware of the
 * firmware command.  The use of bit-field structure elements is purely to
 * remind ourselves of the field size limitations and save memory in the case
 * where the filter table is large.
 */
struct filter_entry {
	/* Administrative fields for filter.
	 */
	u32 valid:1;            /* filter allocated and valid */
	u32 locked:1;           /* filter is administratively locked */

	u32 pending:1;          /* filter action is pending firmware reply */
	u32 smtidx:8;           /* Source MAC Table index for smac */
	struct l2t_entry *l2t;  /* Layer Two Table entry for dmac */

	/* The filter itself.  Most of this is a straight copy of information
	 * provided by the extended ioctl().  Some fields are translated to
	 * internal forms -- for instance the Ingress Queue ID passed in from
	 * the ioctl() is translated into the Absolute Ingress Queue ID.
	 */
	struct ch_filter_specification fs;
};

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#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)

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#define CH_DEVICE(devid, data) { PCI_VDEVICE(CHELSIO, devid), (data) }
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static DEFINE_PCI_DEVICE_TABLE(cxgb4_pci_tbl) = {
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	CH_DEVICE(0xa000, 0),  /* PE10K */
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	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),
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	CH_DEVICE(0x440d, 4),
	CH_DEVICE(0x440e, 4),
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	{ 0, }
};

#define FW_FNAME "cxgb4/t4fw.bin"
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#define FW_CFNAME "cxgb4/t4-config.txt"
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MODULE_DESCRIPTION(DRV_DESC);
MODULE_AUTHOR("Chelsio Communications");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_VERSION(DRV_VERSION);
MODULE_DEVICE_TABLE(pci, cxgb4_pci_tbl);
MODULE_FIRMWARE(FW_FNAME);

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/*
 * Normally we're willing to become the firmware's Master PF but will be happy
 * if another PF has already become the Master and initialized the adapter.
 * Setting "force_init" will cause this driver to forcibly establish itself as
 * the Master PF and initialize the adapter.
 */
static uint force_init;

module_param(force_init, uint, 0644);
MODULE_PARM_DESC(force_init, "Forcibly become Master PF and initialize adapter");

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/*
 * Normally if the firmware we connect to has Configuration File support, we
 * use that and only fall back to the old Driver-based initialization if the
 * Configuration File fails for some reason.  If force_old_init is set, then
 * we'll always use the old Driver-based initialization sequence.
 */
static uint force_old_init;

module_param(force_old_init, uint, 0644);
MODULE_PARM_DESC(force_old_init, "Force old initialization sequence");

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static int dflt_msg_enable = DFLT_MSG_ENABLE;

module_param(dflt_msg_enable, int, 0644);
MODULE_PARM_DESC(dflt_msg_enable, "Chelsio T4 default message enable bitmap");

/*
 * The driver uses the best interrupt scheme available on a platform in the
 * order MSI-X, MSI, legacy INTx interrupts.  This parameter determines which
 * of these schemes the driver may consider as follows:
 *
 * msi = 2: choose from among all three options
 * msi = 1: only consider MSI and INTx interrupts
 * msi = 0: force INTx interrupts
 */
static int msi = 2;

module_param(msi, int, 0644);
MODULE_PARM_DESC(msi, "whether to use INTx (0), MSI (1) or MSI-X (2)");

/*
 * Queue interrupt hold-off timer values.  Queues default to the first of these
 * upon creation.
 */
static unsigned int intr_holdoff[SGE_NTIMERS - 1] = { 5, 10, 20, 50, 100 };

module_param_array(intr_holdoff, uint, NULL, 0644);
MODULE_PARM_DESC(intr_holdoff, "values for queue interrupt hold-off timers "
		 "0..4 in microseconds");

static unsigned int intr_cnt[SGE_NCOUNTERS - 1] = { 4, 8, 16 };

module_param_array(intr_cnt, uint, NULL, 0644);
MODULE_PARM_DESC(intr_cnt,
		 "thresholds 1..3 for queue interrupt packet counters");

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/*
 * Normally we tell the chip to deliver Ingress Packets into our DMA buffers
 * offset by 2 bytes in order to have the IP headers line up on 4-byte
 * boundaries.  This is a requirement for many architectures which will throw
 * a machine check fault if an attempt is made to access one of the 4-byte IP
 * header fields on a non-4-byte boundary.  And it's a major performance issue
 * even on some architectures which allow it like some implementations of the
 * x86 ISA.  However, some architectures don't mind this and for some very
 * edge-case performance sensitive applications (like forwarding large volumes
 * of small packets), setting this DMA offset to 0 will decrease the number of
 * PCI-E Bus transfers enough to measurably affect performance.
 */
static int rx_dma_offset = 2;

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static bool vf_acls;
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#ifdef CONFIG_PCI_IOV
module_param(vf_acls, bool, 0644);
MODULE_PARM_DESC(vf_acls, "if set enable virtualization L2 ACL enforcement");

static unsigned int num_vf[4];

module_param_array(num_vf, uint, NULL, 0644);
MODULE_PARM_DESC(num_vf, "number of VFs for each of PFs 0-3");
#endif

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/*
 * The filter TCAM has a fixed portion and a variable portion.  The fixed
 * portion can match on source/destination IP IPv4/IPv6 addresses and TCP/UDP
 * ports.  The variable portion is 36 bits which can include things like Exact
 * Match MAC Index (9 bits), Ether Type (16 bits), IP Protocol (8 bits),
 * [Inner] VLAN Tag (17 bits), etc. which, if all were somehow selected, would
 * far exceed the 36-bit budget for this "compressed" header portion of the
 * filter.  Thus, we have a scarce resource which must be carefully managed.
 *
 * By default we set this up to mostly match the set of filter matching
 * capabilities of T3 but with accommodations for some of T4's more
 * interesting features:
 *
 *   { IP Fragment (1), MPS Match Type (3), IP Protocol (8),
 *     [Inner] VLAN (17), Port (3), FCoE (1) }
 */
enum {
	TP_VLAN_PRI_MAP_DEFAULT = HW_TPL_FR_MT_PR_IV_P_FC,
	TP_VLAN_PRI_MAP_FIRST = FCOE_SHIFT,
	TP_VLAN_PRI_MAP_LAST = FRAGMENTATION_SHIFT,
};

static unsigned int tp_vlan_pri_map = TP_VLAN_PRI_MAP_DEFAULT;

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module_param(tp_vlan_pri_map, uint, 0644);
MODULE_PARM_DESC(tp_vlan_pri_map, "global compressed filter configuration");

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static struct dentry *cxgb4_debugfs_root;

static LIST_HEAD(adapter_list);
static DEFINE_MUTEX(uld_mutex);
static struct cxgb4_uld_info ulds[CXGB4_ULD_MAX];
static const char *uld_str[] = { "RDMA", "iSCSI" };

static void link_report(struct net_device *dev)
{
	if (!netif_carrier_ok(dev))
		netdev_info(dev, "link down\n");
	else {
		static const char *fc[] = { "no", "Rx", "Tx", "Tx/Rx" };

		const char *s = "10Mbps";
		const struct port_info *p = netdev_priv(dev);

		switch (p->link_cfg.speed) {
		case SPEED_10000:
			s = "10Gbps";
			break;
		case SPEED_1000:
			s = "1000Mbps";
			break;
		case SPEED_100:
			s = "100Mbps";
			break;
		}

		netdev_info(dev, "link up, %s, full-duplex, %s PAUSE\n", s,
			    fc[p->link_cfg.fc]);
	}
}

void t4_os_link_changed(struct adapter *adapter, int port_id, int link_stat)
{
	struct net_device *dev = adapter->port[port_id];

	/* Skip changes from disabled ports. */
	if (netif_running(dev) && link_stat != netif_carrier_ok(dev)) {
		if (link_stat)
			netif_carrier_on(dev);
		else
			netif_carrier_off(dev);

		link_report(dev);
	}
}

void t4_os_portmod_changed(const struct adapter *adap, int port_id)
{
	static const char *mod_str[] = {
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		NULL, "LR", "SR", "ER", "passive DA", "active DA", "LRM"
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	};

	const struct net_device *dev = adap->port[port_id];
	const struct port_info *pi = netdev_priv(dev);

	if (pi->mod_type == FW_PORT_MOD_TYPE_NONE)
		netdev_info(dev, "port module unplugged\n");
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	else if (pi->mod_type < ARRAY_SIZE(mod_str))
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		netdev_info(dev, "%s module inserted\n", mod_str[pi->mod_type]);
}

/*
 * Configure the exact and hash address filters to handle a port's multicast
 * and secondary unicast MAC addresses.
 */
static int set_addr_filters(const struct net_device *dev, bool sleep)
{
	u64 mhash = 0;
	u64 uhash = 0;
	bool free = true;
	u16 filt_idx[7];
	const u8 *addr[7];
	int ret, naddr = 0;
	const struct netdev_hw_addr *ha;
	int uc_cnt = netdev_uc_count(dev);
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	int mc_cnt = netdev_mc_count(dev);
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	const struct port_info *pi = netdev_priv(dev);
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	unsigned int mb = pi->adapter->fn;
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	/* first do the secondary unicast addresses */
	netdev_for_each_uc_addr(ha, dev) {
		addr[naddr++] = ha->addr;
		if (--uc_cnt == 0 || naddr >= ARRAY_SIZE(addr)) {
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			ret = t4_alloc_mac_filt(pi->adapter, mb, pi->viid, free,
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					naddr, addr, filt_idx, &uhash, sleep);
			if (ret < 0)
				return ret;

			free = false;
			naddr = 0;
		}
	}

	/* next set up the multicast addresses */
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	netdev_for_each_mc_addr(ha, dev) {
		addr[naddr++] = ha->addr;
		if (--mc_cnt == 0 || naddr >= ARRAY_SIZE(addr)) {
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			ret = t4_alloc_mac_filt(pi->adapter, mb, pi->viid, free,
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					naddr, addr, filt_idx, &mhash, sleep);
			if (ret < 0)
				return ret;

			free = false;
			naddr = 0;
		}
	}

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	return t4_set_addr_hash(pi->adapter, mb, pi->viid, uhash != 0,
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				uhash | mhash, sleep);
}

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int dbfifo_int_thresh = 10; /* 10 == 640 entry threshold */
module_param(dbfifo_int_thresh, int, 0644);
MODULE_PARM_DESC(dbfifo_int_thresh, "doorbell fifo interrupt threshold");

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/*
 * usecs to sleep while draining the dbfifo
 */
static int dbfifo_drain_delay = 1000;
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module_param(dbfifo_drain_delay, int, 0644);
MODULE_PARM_DESC(dbfifo_drain_delay,
		 "usecs to sleep while draining the dbfifo");

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/*
 * Set Rx properties of a port, such as promiscruity, address filters, and MTU.
 * If @mtu is -1 it is left unchanged.
 */
static int set_rxmode(struct net_device *dev, int mtu, bool sleep_ok)
{
	int ret;
	struct port_info *pi = netdev_priv(dev);

	ret = set_addr_filters(dev, sleep_ok);
	if (ret == 0)
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		ret = t4_set_rxmode(pi->adapter, pi->adapter->fn, pi->viid, mtu,
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				    (dev->flags & IFF_PROMISC) ? 1 : 0,
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				    (dev->flags & IFF_ALLMULTI) ? 1 : 0, 1, -1,
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				    sleep_ok);
	return ret;
}

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static struct workqueue_struct *workq;

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/**
 *	link_start - enable a port
 *	@dev: the port to enable
 *
 *	Performs the MAC and PHY actions needed to enable a port.
 */
static int link_start(struct net_device *dev)
{
	int ret;
	struct port_info *pi = netdev_priv(dev);
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	unsigned int mb = pi->adapter->fn;
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	/*
	 * We do not set address filters and promiscuity here, the stack does
	 * that step explicitly.
	 */
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	ret = t4_set_rxmode(pi->adapter, mb, pi->viid, dev->mtu, -1, -1, -1,
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			    !!(dev->features & NETIF_F_HW_VLAN_RX), true);
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	if (ret == 0) {
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		ret = t4_change_mac(pi->adapter, mb, pi->viid,
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				    pi->xact_addr_filt, dev->dev_addr, true,
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				    true);
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		if (ret >= 0) {
			pi->xact_addr_filt = ret;
			ret = 0;
		}
	}
	if (ret == 0)
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		ret = t4_link_start(pi->adapter, mb, pi->tx_chan,
				    &pi->link_cfg);
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	if (ret == 0)
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		ret = t4_enable_vi(pi->adapter, mb, pi->viid, true, true);
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	return ret;
}

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/* Clear a filter and release any of its resources that we own.  This also
 * clears the filter's "pending" status.
 */
static void clear_filter(struct adapter *adap, struct filter_entry *f)
{
	/* If the new or old filter have loopback rewriteing rules then we'll
	 * need to free any existing Layer Two Table (L2T) entries of the old
	 * filter rule.  The firmware will handle freeing up any Source MAC
	 * Table (SMT) entries used for rewriting Source MAC Addresses in
	 * loopback rules.
	 */
	if (f->l2t)
		cxgb4_l2t_release(f->l2t);

	/* The zeroing of the filter rule below clears the filter valid,
	 * pending, locked flags, l2t pointer, etc. so it's all we need for
	 * this operation.
	 */
	memset(f, 0, sizeof(*f));
}

/* Handle a filter write/deletion reply.
 */
static void filter_rpl(struct adapter *adap, const struct cpl_set_tcb_rpl *rpl)
{
	unsigned int idx = GET_TID(rpl);
	unsigned int nidx = idx - adap->tids.ftid_base;
	unsigned int ret;
	struct filter_entry *f;

	if (idx >= adap->tids.ftid_base && nidx <
	   (adap->tids.nftids + adap->tids.nsftids)) {
		idx = nidx;
		ret = GET_TCB_COOKIE(rpl->cookie);
		f = &adap->tids.ftid_tab[idx];

		if (ret == FW_FILTER_WR_FLT_DELETED) {
			/* Clear the filter when we get confirmation from the
			 * hardware that the filter has been deleted.
			 */
			clear_filter(adap, f);
		} else if (ret == FW_FILTER_WR_SMT_TBL_FULL) {
			dev_err(adap->pdev_dev, "filter %u setup failed due to full SMT\n",
				idx);
			clear_filter(adap, f);
		} else if (ret == FW_FILTER_WR_FLT_ADDED) {
			f->smtidx = (be64_to_cpu(rpl->oldval) >> 24) & 0xff;
			f->pending = 0;  /* asynchronous setup completed */
			f->valid = 1;
		} else {
			/* Something went wrong.  Issue a warning about the
			 * problem and clear everything out.
			 */
			dev_err(adap->pdev_dev, "filter %u setup failed with error %u\n",
				idx, ret);
			clear_filter(adap, f);
		}
	}
}

/* Response queue handler for the FW event queue.
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 */
static int fwevtq_handler(struct sge_rspq *q, const __be64 *rsp,
			  const struct pkt_gl *gl)
{
	u8 opcode = ((const struct rss_header *)rsp)->opcode;

	rsp++;                                          /* skip RSS header */
	if (likely(opcode == CPL_SGE_EGR_UPDATE)) {
		const struct cpl_sge_egr_update *p = (void *)rsp;
		unsigned int qid = EGR_QID(ntohl(p->opcode_qid));
607
		struct sge_txq *txq;
608

609
		txq = q->adap->sge.egr_map[qid - q->adap->sge.egr_start];
610
		txq->restarts++;
611
		if ((u8 *)txq < (u8 *)q->adap->sge.ofldtxq) {
612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630
			struct sge_eth_txq *eq;

			eq = container_of(txq, struct sge_eth_txq, q);
			netif_tx_wake_queue(eq->txq);
		} else {
			struct sge_ofld_txq *oq;

			oq = container_of(txq, struct sge_ofld_txq, q);
			tasklet_schedule(&oq->qresume_tsk);
		}
	} else if (opcode == CPL_FW6_MSG || opcode == CPL_FW4_MSG) {
		const struct cpl_fw6_msg *p = (void *)rsp;

		if (p->type == 0)
			t4_handle_fw_rpl(q->adap, p->data);
	} else if (opcode == CPL_L2T_WRITE_RPL) {
		const struct cpl_l2t_write_rpl *p = (void *)rsp;

		do_l2t_write_rpl(q->adap, p);
V
Vipul Pandya 已提交
631 632 633 634
	} else if (opcode == CPL_SET_TCB_RPL) {
		const struct cpl_set_tcb_rpl *p = (void *)rsp;

		filter_rpl(q->adap, p);
635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699
	} else
		dev_err(q->adap->pdev_dev,
			"unexpected CPL %#x on FW event queue\n", opcode);
	return 0;
}

/**
 *	uldrx_handler - response queue handler for ULD queues
 *	@q: the response queue that received the packet
 *	@rsp: the response queue descriptor holding the offload message
 *	@gl: the gather list of packet fragments
 *
 *	Deliver an ingress offload packet to a ULD.  All processing is done by
 *	the ULD, we just maintain statistics.
 */
static int uldrx_handler(struct sge_rspq *q, const __be64 *rsp,
			 const struct pkt_gl *gl)
{
	struct sge_ofld_rxq *rxq = container_of(q, struct sge_ofld_rxq, rspq);

	if (ulds[q->uld].rx_handler(q->adap->uld_handle[q->uld], rsp, gl)) {
		rxq->stats.nomem++;
		return -1;
	}
	if (gl == NULL)
		rxq->stats.imm++;
	else if (gl == CXGB4_MSG_AN)
		rxq->stats.an++;
	else
		rxq->stats.pkts++;
	return 0;
}

static void disable_msi(struct adapter *adapter)
{
	if (adapter->flags & USING_MSIX) {
		pci_disable_msix(adapter->pdev);
		adapter->flags &= ~USING_MSIX;
	} else if (adapter->flags & USING_MSI) {
		pci_disable_msi(adapter->pdev);
		adapter->flags &= ~USING_MSI;
	}
}

/*
 * Interrupt handler for non-data events used with MSI-X.
 */
static irqreturn_t t4_nondata_intr(int irq, void *cookie)
{
	struct adapter *adap = cookie;

	u32 v = t4_read_reg(adap, MYPF_REG(PL_PF_INT_CAUSE));
	if (v & PFSW) {
		adap->swintr = 1;
		t4_write_reg(adap, MYPF_REG(PL_PF_INT_CAUSE), v);
	}
	t4_slow_intr_handler(adap);
	return IRQ_HANDLED;
}

/*
 * Name the MSI-X interrupts.
 */
static void name_msix_vecs(struct adapter *adap)
{
700
	int i, j, msi_idx = 2, n = sizeof(adap->msix_info[0].desc);
701 702

	/* non-data interrupts */
703
	snprintf(adap->msix_info[0].desc, n, "%s", adap->port[0]->name);
704 705

	/* FW events */
706 707
	snprintf(adap->msix_info[1].desc, n, "%s-FWeventq",
		 adap->port[0]->name);
708 709 710 711 712 713

	/* Ethernet queues */
	for_each_port(adap, j) {
		struct net_device *d = adap->port[j];
		const struct port_info *pi = netdev_priv(d);

714
		for (i = 0; i < pi->nqsets; i++, msi_idx++)
715 716 717 718 719
			snprintf(adap->msix_info[msi_idx].desc, n, "%s-Rx%d",
				 d->name, i);
	}

	/* offload queues */
720 721
	for_each_ofldrxq(&adap->sge, i)
		snprintf(adap->msix_info[msi_idx++].desc, n, "%s-ofld%d",
722
			 adap->port[0]->name, i);
723 724 725

	for_each_rdmarxq(&adap->sge, i)
		snprintf(adap->msix_info[msi_idx++].desc, n, "%s-rdma%d",
726
			 adap->port[0]->name, i);
727 728 729 730 731
}

static int request_msix_queue_irqs(struct adapter *adap)
{
	struct sge *s = &adap->sge;
732
	int err, ethqidx, ofldqidx = 0, rdmaqidx = 0, msi_index = 2;
733 734 735 736 737 738 739

	err = request_irq(adap->msix_info[1].vec, t4_sge_intr_msix, 0,
			  adap->msix_info[1].desc, &s->fw_evtq);
	if (err)
		return err;

	for_each_ethrxq(s, ethqidx) {
740 741 742
		err = request_irq(adap->msix_info[msi_index].vec,
				  t4_sge_intr_msix, 0,
				  adap->msix_info[msi_index].desc,
743 744 745
				  &s->ethrxq[ethqidx].rspq);
		if (err)
			goto unwind;
746
		msi_index++;
747 748
	}
	for_each_ofldrxq(s, ofldqidx) {
749 750 751
		err = request_irq(adap->msix_info[msi_index].vec,
				  t4_sge_intr_msix, 0,
				  adap->msix_info[msi_index].desc,
752 753 754
				  &s->ofldrxq[ofldqidx].rspq);
		if (err)
			goto unwind;
755
		msi_index++;
756 757
	}
	for_each_rdmarxq(s, rdmaqidx) {
758 759 760
		err = request_irq(adap->msix_info[msi_index].vec,
				  t4_sge_intr_msix, 0,
				  adap->msix_info[msi_index].desc,
761 762 763
				  &s->rdmarxq[rdmaqidx].rspq);
		if (err)
			goto unwind;
764
		msi_index++;
765 766 767 768 769
	}
	return 0;

unwind:
	while (--rdmaqidx >= 0)
770
		free_irq(adap->msix_info[--msi_index].vec,
771 772
			 &s->rdmarxq[rdmaqidx].rspq);
	while (--ofldqidx >= 0)
773
		free_irq(adap->msix_info[--msi_index].vec,
774 775
			 &s->ofldrxq[ofldqidx].rspq);
	while (--ethqidx >= 0)
776 777
		free_irq(adap->msix_info[--msi_index].vec,
			 &s->ethrxq[ethqidx].rspq);
778 779 780 781 782 783
	free_irq(adap->msix_info[1].vec, &s->fw_evtq);
	return err;
}

static void free_msix_queue_irqs(struct adapter *adap)
{
784
	int i, msi_index = 2;
785 786 787 788
	struct sge *s = &adap->sge;

	free_irq(adap->msix_info[1].vec, &s->fw_evtq);
	for_each_ethrxq(s, i)
789
		free_irq(adap->msix_info[msi_index++].vec, &s->ethrxq[i].rspq);
790
	for_each_ofldrxq(s, i)
791
		free_irq(adap->msix_info[msi_index++].vec, &s->ofldrxq[i].rspq);
792
	for_each_rdmarxq(s, i)
793
		free_irq(adap->msix_info[msi_index++].vec, &s->rdmarxq[i].rspq);
794 795
}

796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817
/**
 *	write_rss - write the RSS table for a given port
 *	@pi: the port
 *	@queues: array of queue indices for RSS
 *
 *	Sets up the portion of the HW RSS table for the port's VI to distribute
 *	packets to the Rx queues in @queues.
 */
static int write_rss(const struct port_info *pi, const u16 *queues)
{
	u16 *rss;
	int i, err;
	const struct sge_eth_rxq *q = &pi->adapter->sge.ethrxq[pi->first_qset];

	rss = kmalloc(pi->rss_size * sizeof(u16), GFP_KERNEL);
	if (!rss)
		return -ENOMEM;

	/* map the queue indices to queue ids */
	for (i = 0; i < pi->rss_size; i++, queues++)
		rss[i] = q[*queues].rspq.abs_id;

818 819
	err = t4_config_rss_range(pi->adapter, pi->adapter->fn, pi->viid, 0,
				  pi->rss_size, rss, pi->rss_size);
820 821 822 823
	kfree(rss);
	return err;
}

824 825 826 827
/**
 *	setup_rss - configure RSS
 *	@adap: the adapter
 *
828
 *	Sets up RSS for each port.
829 830 831
 */
static int setup_rss(struct adapter *adap)
{
832
	int i, err;
833 834 835 836

	for_each_port(adap, i) {
		const struct port_info *pi = adap2pinfo(adap, i);

837
		err = write_rss(pi, pi->rss);
838 839 840 841 842 843
		if (err)
			return err;
	}
	return 0;
}

844 845 846 847 848 849 850 851 852
/*
 * Return the channel of the ingress queue with the given qid.
 */
static unsigned int rxq_to_chan(const struct sge *p, unsigned int qid)
{
	qid -= p->ingr_start;
	return netdev2pinfo(p->ingr_map[qid]->netdev)->tx_chan;
}

853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028
/*
 * Wait until all NAPI handlers are descheduled.
 */
static void quiesce_rx(struct adapter *adap)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(adap->sge.ingr_map); i++) {
		struct sge_rspq *q = adap->sge.ingr_map[i];

		if (q && q->handler)
			napi_disable(&q->napi);
	}
}

/*
 * Enable NAPI scheduling and interrupt generation for all Rx queues.
 */
static void enable_rx(struct adapter *adap)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(adap->sge.ingr_map); i++) {
		struct sge_rspq *q = adap->sge.ingr_map[i];

		if (!q)
			continue;
		if (q->handler)
			napi_enable(&q->napi);
		/* 0-increment GTS to start the timer and enable interrupts */
		t4_write_reg(adap, MYPF_REG(SGE_PF_GTS),
			     SEINTARM(q->intr_params) |
			     INGRESSQID(q->cntxt_id));
	}
}

/**
 *	setup_sge_queues - configure SGE Tx/Rx/response queues
 *	@adap: the adapter
 *
 *	Determines how many sets of SGE queues to use and initializes them.
 *	We support multiple queue sets per port if we have MSI-X, otherwise
 *	just one queue set per port.
 */
static int setup_sge_queues(struct adapter *adap)
{
	int err, msi_idx, i, j;
	struct sge *s = &adap->sge;

	bitmap_zero(s->starving_fl, MAX_EGRQ);
	bitmap_zero(s->txq_maperr, MAX_EGRQ);

	if (adap->flags & USING_MSIX)
		msi_idx = 1;         /* vector 0 is for non-queue interrupts */
	else {
		err = t4_sge_alloc_rxq(adap, &s->intrq, false, adap->port[0], 0,
				       NULL, NULL);
		if (err)
			return err;
		msi_idx = -((int)s->intrq.abs_id + 1);
	}

	err = t4_sge_alloc_rxq(adap, &s->fw_evtq, true, adap->port[0],
			       msi_idx, NULL, fwevtq_handler);
	if (err) {
freeout:	t4_free_sge_resources(adap);
		return err;
	}

	for_each_port(adap, i) {
		struct net_device *dev = adap->port[i];
		struct port_info *pi = netdev_priv(dev);
		struct sge_eth_rxq *q = &s->ethrxq[pi->first_qset];
		struct sge_eth_txq *t = &s->ethtxq[pi->first_qset];

		for (j = 0; j < pi->nqsets; j++, q++) {
			if (msi_idx > 0)
				msi_idx++;
			err = t4_sge_alloc_rxq(adap, &q->rspq, false, dev,
					       msi_idx, &q->fl,
					       t4_ethrx_handler);
			if (err)
				goto freeout;
			q->rspq.idx = j;
			memset(&q->stats, 0, sizeof(q->stats));
		}
		for (j = 0; j < pi->nqsets; j++, t++) {
			err = t4_sge_alloc_eth_txq(adap, t, dev,
					netdev_get_tx_queue(dev, j),
					s->fw_evtq.cntxt_id);
			if (err)
				goto freeout;
		}
	}

	j = s->ofldqsets / adap->params.nports; /* ofld queues per channel */
	for_each_ofldrxq(s, i) {
		struct sge_ofld_rxq *q = &s->ofldrxq[i];
		struct net_device *dev = adap->port[i / j];

		if (msi_idx > 0)
			msi_idx++;
		err = t4_sge_alloc_rxq(adap, &q->rspq, false, dev, msi_idx,
				       &q->fl, uldrx_handler);
		if (err)
			goto freeout;
		memset(&q->stats, 0, sizeof(q->stats));
		s->ofld_rxq[i] = q->rspq.abs_id;
		err = t4_sge_alloc_ofld_txq(adap, &s->ofldtxq[i], dev,
					    s->fw_evtq.cntxt_id);
		if (err)
			goto freeout;
	}

	for_each_rdmarxq(s, i) {
		struct sge_ofld_rxq *q = &s->rdmarxq[i];

		if (msi_idx > 0)
			msi_idx++;
		err = t4_sge_alloc_rxq(adap, &q->rspq, false, adap->port[i],
				       msi_idx, &q->fl, uldrx_handler);
		if (err)
			goto freeout;
		memset(&q->stats, 0, sizeof(q->stats));
		s->rdma_rxq[i] = q->rspq.abs_id;
	}

	for_each_port(adap, i) {
		/*
		 * Note that ->rdmarxq[i].rspq.cntxt_id below is 0 if we don't
		 * have RDMA queues, and that's the right value.
		 */
		err = t4_sge_alloc_ctrl_txq(adap, &s->ctrlq[i], adap->port[i],
					    s->fw_evtq.cntxt_id,
					    s->rdmarxq[i].rspq.cntxt_id);
		if (err)
			goto freeout;
	}

	t4_write_reg(adap, MPS_TRC_RSS_CONTROL,
		     RSSCONTROL(netdev2pinfo(adap->port[0])->tx_chan) |
		     QUEUENUMBER(s->ethrxq[0].rspq.abs_id));
	return 0;
}

/*
 * Returns 0 if new FW was successfully loaded, a positive errno if a load was
 * started but failed, and a negative errno if flash load couldn't start.
 */
static int upgrade_fw(struct adapter *adap)
{
	int ret;
	u32 vers;
	const struct fw_hdr *hdr;
	const struct firmware *fw;
	struct device *dev = adap->pdev_dev;

	ret = request_firmware(&fw, FW_FNAME, dev);
	if (ret < 0) {
		dev_err(dev, "unable to load firmware image " FW_FNAME
			", error %d\n", ret);
		return ret;
	}

	hdr = (const struct fw_hdr *)fw->data;
	vers = ntohl(hdr->fw_ver);
	if (FW_HDR_FW_VER_MAJOR_GET(vers) != FW_VERSION_MAJOR) {
		ret = -EINVAL;              /* wrong major version, won't do */
		goto out;
	}

	/*
	 * If the flash FW is unusable or we found something newer, load it.
	 */
	if (FW_HDR_FW_VER_MAJOR_GET(adap->params.fw_vers) != FW_VERSION_MAJOR ||
	    vers > adap->params.fw_vers) {
1029 1030 1031
		dev_info(dev, "upgrading firmware ...\n");
		ret = t4_fw_upgrade(adap, adap->mbox, fw->data, fw->size,
				    /*force=*/false);
1032
		if (!ret)
1033 1034 1035 1036 1037 1038 1039 1040
			dev_info(dev, "firmware successfully upgraded to "
				 FW_FNAME " (%d.%d.%d.%d)\n",
				 FW_HDR_FW_VER_MAJOR_GET(vers),
				 FW_HDR_FW_VER_MINOR_GET(vers),
				 FW_HDR_FW_VER_MICRO_GET(vers),
				 FW_HDR_FW_VER_BUILD_GET(vers));
		else
			dev_err(dev, "firmware upgrade failed! err=%d\n", -ret);
1041 1042 1043 1044 1045
	} else {
		/*
		 * Tell our caller that we didn't upgrade the firmware.
		 */
		ret = -EINVAL;
1046
	}
1047

1048 1049 1050 1051 1052 1053 1054 1055 1056 1057
out:	release_firmware(fw);
	return ret;
}

/*
 * Allocate a chunk of memory using kmalloc or, if that fails, vmalloc.
 * The allocated memory is cleared.
 */
void *t4_alloc_mem(size_t size)
{
E
Eric Dumazet 已提交
1058
	void *p = kzalloc(size, GFP_KERNEL);
1059 1060

	if (!p)
E
Eric Dumazet 已提交
1061
		p = vzalloc(size);
1062 1063 1064 1065 1066 1067
	return p;
}

/*
 * Free memory allocated through alloc_mem().
 */
1068
static void t4_free_mem(void *addr)
1069 1070 1071 1072 1073 1074 1075
{
	if (is_vmalloc_addr(addr))
		vfree(addr);
	else
		kfree(addr);
}

V
Vipul Pandya 已提交
1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217
/* Send a Work Request to write the filter at a specified index.  We construct
 * a Firmware Filter Work Request to have the work done and put the indicated
 * filter into "pending" mode which will prevent any further actions against
 * it till we get a reply from the firmware on the completion status of the
 * request.
 */
static int set_filter_wr(struct adapter *adapter, int fidx)
{
	struct filter_entry *f = &adapter->tids.ftid_tab[fidx];
	struct sk_buff *skb;
	struct fw_filter_wr *fwr;
	unsigned int ftid;

	/* If the new filter requires loopback Destination MAC and/or VLAN
	 * rewriting then we need to allocate a Layer 2 Table (L2T) entry for
	 * the filter.
	 */
	if (f->fs.newdmac || f->fs.newvlan) {
		/* allocate L2T entry for new filter */
		f->l2t = t4_l2t_alloc_switching(adapter->l2t);
		if (f->l2t == NULL)
			return -EAGAIN;
		if (t4_l2t_set_switching(adapter, f->l2t, f->fs.vlan,
					f->fs.eport, f->fs.dmac)) {
			cxgb4_l2t_release(f->l2t);
			f->l2t = NULL;
			return -ENOMEM;
		}
	}

	ftid = adapter->tids.ftid_base + fidx;

	skb = alloc_skb(sizeof(*fwr), GFP_KERNEL | __GFP_NOFAIL);
	fwr = (struct fw_filter_wr *)__skb_put(skb, sizeof(*fwr));
	memset(fwr, 0, sizeof(*fwr));

	/* It would be nice to put most of the following in t4_hw.c but most
	 * of the work is translating the cxgbtool ch_filter_specification
	 * into the Work Request and the definition of that structure is
	 * currently in cxgbtool.h which isn't appropriate to pull into the
	 * common code.  We may eventually try to come up with a more neutral
	 * filter specification structure but for now it's easiest to simply
	 * put this fairly direct code in line ...
	 */
	fwr->op_pkd = htonl(FW_WR_OP(FW_FILTER_WR));
	fwr->len16_pkd = htonl(FW_WR_LEN16(sizeof(*fwr)/16));
	fwr->tid_to_iq =
		htonl(V_FW_FILTER_WR_TID(ftid) |
		      V_FW_FILTER_WR_RQTYPE(f->fs.type) |
		      V_FW_FILTER_WR_NOREPLY(0) |
		      V_FW_FILTER_WR_IQ(f->fs.iq));
	fwr->del_filter_to_l2tix =
		htonl(V_FW_FILTER_WR_RPTTID(f->fs.rpttid) |
		      V_FW_FILTER_WR_DROP(f->fs.action == FILTER_DROP) |
		      V_FW_FILTER_WR_DIRSTEER(f->fs.dirsteer) |
		      V_FW_FILTER_WR_MASKHASH(f->fs.maskhash) |
		      V_FW_FILTER_WR_DIRSTEERHASH(f->fs.dirsteerhash) |
		      V_FW_FILTER_WR_LPBK(f->fs.action == FILTER_SWITCH) |
		      V_FW_FILTER_WR_DMAC(f->fs.newdmac) |
		      V_FW_FILTER_WR_SMAC(f->fs.newsmac) |
		      V_FW_FILTER_WR_INSVLAN(f->fs.newvlan == VLAN_INSERT ||
					     f->fs.newvlan == VLAN_REWRITE) |
		      V_FW_FILTER_WR_RMVLAN(f->fs.newvlan == VLAN_REMOVE ||
					    f->fs.newvlan == VLAN_REWRITE) |
		      V_FW_FILTER_WR_HITCNTS(f->fs.hitcnts) |
		      V_FW_FILTER_WR_TXCHAN(f->fs.eport) |
		      V_FW_FILTER_WR_PRIO(f->fs.prio) |
		      V_FW_FILTER_WR_L2TIX(f->l2t ? f->l2t->idx : 0));
	fwr->ethtype = htons(f->fs.val.ethtype);
	fwr->ethtypem = htons(f->fs.mask.ethtype);
	fwr->frag_to_ovlan_vldm =
		(V_FW_FILTER_WR_FRAG(f->fs.val.frag) |
		 V_FW_FILTER_WR_FRAGM(f->fs.mask.frag) |
		 V_FW_FILTER_WR_IVLAN_VLD(f->fs.val.ivlan_vld) |
		 V_FW_FILTER_WR_OVLAN_VLD(f->fs.val.ovlan_vld) |
		 V_FW_FILTER_WR_IVLAN_VLDM(f->fs.mask.ivlan_vld) |
		 V_FW_FILTER_WR_OVLAN_VLDM(f->fs.mask.ovlan_vld));
	fwr->smac_sel = 0;
	fwr->rx_chan_rx_rpl_iq =
		htons(V_FW_FILTER_WR_RX_CHAN(0) |
		      V_FW_FILTER_WR_RX_RPL_IQ(adapter->sge.fw_evtq.abs_id));
	fwr->maci_to_matchtypem =
		htonl(V_FW_FILTER_WR_MACI(f->fs.val.macidx) |
		      V_FW_FILTER_WR_MACIM(f->fs.mask.macidx) |
		      V_FW_FILTER_WR_FCOE(f->fs.val.fcoe) |
		      V_FW_FILTER_WR_FCOEM(f->fs.mask.fcoe) |
		      V_FW_FILTER_WR_PORT(f->fs.val.iport) |
		      V_FW_FILTER_WR_PORTM(f->fs.mask.iport) |
		      V_FW_FILTER_WR_MATCHTYPE(f->fs.val.matchtype) |
		      V_FW_FILTER_WR_MATCHTYPEM(f->fs.mask.matchtype));
	fwr->ptcl = f->fs.val.proto;
	fwr->ptclm = f->fs.mask.proto;
	fwr->ttyp = f->fs.val.tos;
	fwr->ttypm = f->fs.mask.tos;
	fwr->ivlan = htons(f->fs.val.ivlan);
	fwr->ivlanm = htons(f->fs.mask.ivlan);
	fwr->ovlan = htons(f->fs.val.ovlan);
	fwr->ovlanm = htons(f->fs.mask.ovlan);
	memcpy(fwr->lip, f->fs.val.lip, sizeof(fwr->lip));
	memcpy(fwr->lipm, f->fs.mask.lip, sizeof(fwr->lipm));
	memcpy(fwr->fip, f->fs.val.fip, sizeof(fwr->fip));
	memcpy(fwr->fipm, f->fs.mask.fip, sizeof(fwr->fipm));
	fwr->lp = htons(f->fs.val.lport);
	fwr->lpm = htons(f->fs.mask.lport);
	fwr->fp = htons(f->fs.val.fport);
	fwr->fpm = htons(f->fs.mask.fport);
	if (f->fs.newsmac)
		memcpy(fwr->sma, f->fs.smac, sizeof(fwr->sma));

	/* Mark the filter as "pending" and ship off the Filter Work Request.
	 * When we get the Work Request Reply we'll clear the pending status.
	 */
	f->pending = 1;
	set_wr_txq(skb, CPL_PRIORITY_CONTROL, f->fs.val.iport & 0x3);
	t4_ofld_send(adapter, skb);
	return 0;
}

/* Delete the filter at a specified index.
 */
static int del_filter_wr(struct adapter *adapter, int fidx)
{
	struct filter_entry *f = &adapter->tids.ftid_tab[fidx];
	struct sk_buff *skb;
	struct fw_filter_wr *fwr;
	unsigned int len, ftid;

	len = sizeof(*fwr);
	ftid = adapter->tids.ftid_base + fidx;

	skb = alloc_skb(len, GFP_KERNEL | __GFP_NOFAIL);
	fwr = (struct fw_filter_wr *)__skb_put(skb, len);
	t4_mk_filtdelwr(ftid, fwr, adapter->sge.fw_evtq.abs_id);

	/* Mark the filter as "pending" and ship off the Filter Work Request.
	 * When we get the Work Request Reply we'll clear the pending status.
	 */
	f->pending = 1;
	t4_mgmt_tx(adapter, skb);
	return 0;
}

1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308
static inline int is_offload(const struct adapter *adap)
{
	return adap->params.offload;
}

/*
 * Implementation of ethtool operations.
 */

static u32 get_msglevel(struct net_device *dev)
{
	return netdev2adap(dev)->msg_enable;
}

static void set_msglevel(struct net_device *dev, u32 val)
{
	netdev2adap(dev)->msg_enable = val;
}

static char stats_strings[][ETH_GSTRING_LEN] = {
	"TxOctetsOK         ",
	"TxFramesOK         ",
	"TxBroadcastFrames  ",
	"TxMulticastFrames  ",
	"TxUnicastFrames    ",
	"TxErrorFrames      ",

	"TxFrames64         ",
	"TxFrames65To127    ",
	"TxFrames128To255   ",
	"TxFrames256To511   ",
	"TxFrames512To1023  ",
	"TxFrames1024To1518 ",
	"TxFrames1519ToMax  ",

	"TxFramesDropped    ",
	"TxPauseFrames      ",
	"TxPPP0Frames       ",
	"TxPPP1Frames       ",
	"TxPPP2Frames       ",
	"TxPPP3Frames       ",
	"TxPPP4Frames       ",
	"TxPPP5Frames       ",
	"TxPPP6Frames       ",
	"TxPPP7Frames       ",

	"RxOctetsOK         ",
	"RxFramesOK         ",
	"RxBroadcastFrames  ",
	"RxMulticastFrames  ",
	"RxUnicastFrames    ",

	"RxFramesTooLong    ",
	"RxJabberErrors     ",
	"RxFCSErrors        ",
	"RxLengthErrors     ",
	"RxSymbolErrors     ",
	"RxRuntFrames       ",

	"RxFrames64         ",
	"RxFrames65To127    ",
	"RxFrames128To255   ",
	"RxFrames256To511   ",
	"RxFrames512To1023  ",
	"RxFrames1024To1518 ",
	"RxFrames1519ToMax  ",

	"RxPauseFrames      ",
	"RxPPP0Frames       ",
	"RxPPP1Frames       ",
	"RxPPP2Frames       ",
	"RxPPP3Frames       ",
	"RxPPP4Frames       ",
	"RxPPP5Frames       ",
	"RxPPP6Frames       ",
	"RxPPP7Frames       ",

	"RxBG0FramesDropped ",
	"RxBG1FramesDropped ",
	"RxBG2FramesDropped ",
	"RxBG3FramesDropped ",
	"RxBG0FramesTrunc   ",
	"RxBG1FramesTrunc   ",
	"RxBG2FramesTrunc   ",
	"RxBG3FramesTrunc   ",

	"TSO                ",
	"TxCsumOffload      ",
	"RxCsumGood         ",
	"VLANextractions    ",
	"VLANinsertions     ",
1309 1310
	"GROpackets         ",
	"GROmerged          ",
1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338
};

static int get_sset_count(struct net_device *dev, int sset)
{
	switch (sset) {
	case ETH_SS_STATS:
		return ARRAY_SIZE(stats_strings);
	default:
		return -EOPNOTSUPP;
	}
}

#define T4_REGMAP_SIZE (160 * 1024)

static int get_regs_len(struct net_device *dev)
{
	return T4_REGMAP_SIZE;
}

static int get_eeprom_len(struct net_device *dev)
{
	return EEPROMSIZE;
}

static void get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
{
	struct adapter *adapter = netdev2adap(dev);

1339 1340 1341 1342
	strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
	strlcpy(info->version, DRV_VERSION, sizeof(info->version));
	strlcpy(info->bus_info, pci_name(adapter->pdev),
		sizeof(info->bus_info));
1343

1344
	if (adapter->params.fw_vers)
1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372
		snprintf(info->fw_version, sizeof(info->fw_version),
			"%u.%u.%u.%u, TP %u.%u.%u.%u",
			FW_HDR_FW_VER_MAJOR_GET(adapter->params.fw_vers),
			FW_HDR_FW_VER_MINOR_GET(adapter->params.fw_vers),
			FW_HDR_FW_VER_MICRO_GET(adapter->params.fw_vers),
			FW_HDR_FW_VER_BUILD_GET(adapter->params.fw_vers),
			FW_HDR_FW_VER_MAJOR_GET(adapter->params.tp_vers),
			FW_HDR_FW_VER_MINOR_GET(adapter->params.tp_vers),
			FW_HDR_FW_VER_MICRO_GET(adapter->params.tp_vers),
			FW_HDR_FW_VER_BUILD_GET(adapter->params.tp_vers));
}

static void get_strings(struct net_device *dev, u32 stringset, u8 *data)
{
	if (stringset == ETH_SS_STATS)
		memcpy(data, stats_strings, sizeof(stats_strings));
}

/*
 * port stats maintained per queue of the port.  They should be in the same
 * order as in stats_strings above.
 */
struct queue_port_stats {
	u64 tso;
	u64 tx_csum;
	u64 rx_csum;
	u64 vlan_ex;
	u64 vlan_ins;
1373 1374
	u64 gro_pkts;
	u64 gro_merged;
1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390
};

static void collect_sge_port_stats(const struct adapter *adap,
		const struct port_info *p, struct queue_port_stats *s)
{
	int i;
	const struct sge_eth_txq *tx = &adap->sge.ethtxq[p->first_qset];
	const struct sge_eth_rxq *rx = &adap->sge.ethrxq[p->first_qset];

	memset(s, 0, sizeof(*s));
	for (i = 0; i < p->nqsets; i++, rx++, tx++) {
		s->tso += tx->tso;
		s->tx_csum += tx->tx_cso;
		s->rx_csum += rx->stats.rx_cso;
		s->vlan_ex += rx->stats.vlan_ex;
		s->vlan_ins += tx->vlan_ins;
1391 1392
		s->gro_pkts += rx->stats.lro_pkts;
		s->gro_merged += rx->stats.lro_merged;
1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411
	}
}

static void get_stats(struct net_device *dev, struct ethtool_stats *stats,
		      u64 *data)
{
	struct port_info *pi = netdev_priv(dev);
	struct adapter *adapter = pi->adapter;

	t4_get_port_stats(adapter, pi->tx_chan, (struct port_stats *)data);

	data += sizeof(struct port_stats) / sizeof(u64);
	collect_sge_port_stats(adapter, pi, (struct queue_port_stats *)data);
}

/*
 * Return a version number to identify the type of adapter.  The scheme is:
 * - bits 0..9: chip version
 * - bits 10..15: chip revision
1412
 * - bits 16..23: register dump version
1413 1414 1415
 */
static inline unsigned int mk_adap_vers(const struct adapter *ap)
{
1416
	return 4 | (ap->params.rev << 10) | (1 << 16);
1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490
}

static void reg_block_dump(struct adapter *ap, void *buf, unsigned int start,
			   unsigned int end)
{
	u32 *p = buf + start;

	for ( ; start <= end; start += sizeof(u32))
		*p++ = t4_read_reg(ap, start);
}

static void get_regs(struct net_device *dev, struct ethtool_regs *regs,
		     void *buf)
{
	static const unsigned int reg_ranges[] = {
		0x1008, 0x1108,
		0x1180, 0x11b4,
		0x11fc, 0x123c,
		0x1300, 0x173c,
		0x1800, 0x18fc,
		0x3000, 0x30d8,
		0x30e0, 0x5924,
		0x5960, 0x59d4,
		0x5a00, 0x5af8,
		0x6000, 0x6098,
		0x6100, 0x6150,
		0x6200, 0x6208,
		0x6240, 0x6248,
		0x6280, 0x6338,
		0x6370, 0x638c,
		0x6400, 0x643c,
		0x6500, 0x6524,
		0x6a00, 0x6a38,
		0x6a60, 0x6a78,
		0x6b00, 0x6b84,
		0x6bf0, 0x6c84,
		0x6cf0, 0x6d84,
		0x6df0, 0x6e84,
		0x6ef0, 0x6f84,
		0x6ff0, 0x7084,
		0x70f0, 0x7184,
		0x71f0, 0x7284,
		0x72f0, 0x7384,
		0x73f0, 0x7450,
		0x7500, 0x7530,
		0x7600, 0x761c,
		0x7680, 0x76cc,
		0x7700, 0x7798,
		0x77c0, 0x77fc,
		0x7900, 0x79fc,
		0x7b00, 0x7c38,
		0x7d00, 0x7efc,
		0x8dc0, 0x8e1c,
		0x8e30, 0x8e78,
		0x8ea0, 0x8f6c,
		0x8fc0, 0x9074,
		0x90fc, 0x90fc,
		0x9400, 0x9458,
		0x9600, 0x96bc,
		0x9800, 0x9808,
		0x9820, 0x983c,
		0x9850, 0x9864,
		0x9c00, 0x9c6c,
		0x9c80, 0x9cec,
		0x9d00, 0x9d6c,
		0x9d80, 0x9dec,
		0x9e00, 0x9e6c,
		0x9e80, 0x9eec,
		0x9f00, 0x9f6c,
		0x9f80, 0x9fec,
		0xd004, 0xd03c,
		0xdfc0, 0xdfe0,
		0xe000, 0xea7c,
		0xf000, 0x11190,
1491 1492 1493
		0x19040, 0x1906c,
		0x19078, 0x19080,
		0x1908c, 0x19124,
1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505
		0x19150, 0x191b0,
		0x191d0, 0x191e8,
		0x19238, 0x1924c,
		0x193f8, 0x19474,
		0x19490, 0x194f8,
		0x19800, 0x19f30,
		0x1a000, 0x1a06c,
		0x1a0b0, 0x1a120,
		0x1a128, 0x1a138,
		0x1a190, 0x1a1c4,
		0x1a1fc, 0x1a1fc,
		0x1e040, 0x1e04c,
1506
		0x1e284, 0x1e28c,
1507 1508 1509 1510 1511
		0x1e2c0, 0x1e2c0,
		0x1e2e0, 0x1e2e0,
		0x1e300, 0x1e384,
		0x1e3c0, 0x1e3c8,
		0x1e440, 0x1e44c,
1512
		0x1e684, 0x1e68c,
1513 1514 1515 1516 1517
		0x1e6c0, 0x1e6c0,
		0x1e6e0, 0x1e6e0,
		0x1e700, 0x1e784,
		0x1e7c0, 0x1e7c8,
		0x1e840, 0x1e84c,
1518
		0x1ea84, 0x1ea8c,
1519 1520 1521 1522 1523
		0x1eac0, 0x1eac0,
		0x1eae0, 0x1eae0,
		0x1eb00, 0x1eb84,
		0x1ebc0, 0x1ebc8,
		0x1ec40, 0x1ec4c,
1524
		0x1ee84, 0x1ee8c,
1525 1526 1527 1528 1529
		0x1eec0, 0x1eec0,
		0x1eee0, 0x1eee0,
		0x1ef00, 0x1ef84,
		0x1efc0, 0x1efc8,
		0x1f040, 0x1f04c,
1530
		0x1f284, 0x1f28c,
1531 1532 1533 1534 1535
		0x1f2c0, 0x1f2c0,
		0x1f2e0, 0x1f2e0,
		0x1f300, 0x1f384,
		0x1f3c0, 0x1f3c8,
		0x1f440, 0x1f44c,
1536
		0x1f684, 0x1f68c,
1537 1538 1539 1540 1541
		0x1f6c0, 0x1f6c0,
		0x1f6e0, 0x1f6e0,
		0x1f700, 0x1f784,
		0x1f7c0, 0x1f7c8,
		0x1f840, 0x1f84c,
1542
		0x1fa84, 0x1fa8c,
1543 1544 1545 1546 1547
		0x1fac0, 0x1fac0,
		0x1fae0, 0x1fae0,
		0x1fb00, 0x1fb84,
		0x1fbc0, 0x1fbc8,
		0x1fc40, 0x1fc4c,
1548
		0x1fe84, 0x1fe8c,
1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668
		0x1fec0, 0x1fec0,
		0x1fee0, 0x1fee0,
		0x1ff00, 0x1ff84,
		0x1ffc0, 0x1ffc8,
		0x20000, 0x2002c,
		0x20100, 0x2013c,
		0x20190, 0x201c8,
		0x20200, 0x20318,
		0x20400, 0x20528,
		0x20540, 0x20614,
		0x21000, 0x21040,
		0x2104c, 0x21060,
		0x210c0, 0x210ec,
		0x21200, 0x21268,
		0x21270, 0x21284,
		0x212fc, 0x21388,
		0x21400, 0x21404,
		0x21500, 0x21518,
		0x2152c, 0x2153c,
		0x21550, 0x21554,
		0x21600, 0x21600,
		0x21608, 0x21628,
		0x21630, 0x2163c,
		0x21700, 0x2171c,
		0x21780, 0x2178c,
		0x21800, 0x21c38,
		0x21c80, 0x21d7c,
		0x21e00, 0x21e04,
		0x22000, 0x2202c,
		0x22100, 0x2213c,
		0x22190, 0x221c8,
		0x22200, 0x22318,
		0x22400, 0x22528,
		0x22540, 0x22614,
		0x23000, 0x23040,
		0x2304c, 0x23060,
		0x230c0, 0x230ec,
		0x23200, 0x23268,
		0x23270, 0x23284,
		0x232fc, 0x23388,
		0x23400, 0x23404,
		0x23500, 0x23518,
		0x2352c, 0x2353c,
		0x23550, 0x23554,
		0x23600, 0x23600,
		0x23608, 0x23628,
		0x23630, 0x2363c,
		0x23700, 0x2371c,
		0x23780, 0x2378c,
		0x23800, 0x23c38,
		0x23c80, 0x23d7c,
		0x23e00, 0x23e04,
		0x24000, 0x2402c,
		0x24100, 0x2413c,
		0x24190, 0x241c8,
		0x24200, 0x24318,
		0x24400, 0x24528,
		0x24540, 0x24614,
		0x25000, 0x25040,
		0x2504c, 0x25060,
		0x250c0, 0x250ec,
		0x25200, 0x25268,
		0x25270, 0x25284,
		0x252fc, 0x25388,
		0x25400, 0x25404,
		0x25500, 0x25518,
		0x2552c, 0x2553c,
		0x25550, 0x25554,
		0x25600, 0x25600,
		0x25608, 0x25628,
		0x25630, 0x2563c,
		0x25700, 0x2571c,
		0x25780, 0x2578c,
		0x25800, 0x25c38,
		0x25c80, 0x25d7c,
		0x25e00, 0x25e04,
		0x26000, 0x2602c,
		0x26100, 0x2613c,
		0x26190, 0x261c8,
		0x26200, 0x26318,
		0x26400, 0x26528,
		0x26540, 0x26614,
		0x27000, 0x27040,
		0x2704c, 0x27060,
		0x270c0, 0x270ec,
		0x27200, 0x27268,
		0x27270, 0x27284,
		0x272fc, 0x27388,
		0x27400, 0x27404,
		0x27500, 0x27518,
		0x2752c, 0x2753c,
		0x27550, 0x27554,
		0x27600, 0x27600,
		0x27608, 0x27628,
		0x27630, 0x2763c,
		0x27700, 0x2771c,
		0x27780, 0x2778c,
		0x27800, 0x27c38,
		0x27c80, 0x27d7c,
		0x27e00, 0x27e04
	};

	int i;
	struct adapter *ap = netdev2adap(dev);

	regs->version = mk_adap_vers(ap);

	memset(buf, 0, T4_REGMAP_SIZE);
	for (i = 0; i < ARRAY_SIZE(reg_ranges); i += 2)
		reg_block_dump(ap, buf, reg_ranges[i], reg_ranges[i + 1]);
}

static int restart_autoneg(struct net_device *dev)
{
	struct port_info *p = netdev_priv(dev);

	if (!netif_running(dev))
		return -EAGAIN;
	if (p->link_cfg.autoneg != AUTONEG_ENABLE)
		return -EINVAL;
1669
	t4_restart_aneg(p->adapter, p->adapter->fn, p->tx_chan);
1670 1671 1672
	return 0;
}

1673 1674
static int identify_port(struct net_device *dev,
			 enum ethtool_phys_id_state state)
1675
{
1676
	unsigned int val;
1677 1678
	struct adapter *adap = netdev2adap(dev);

1679 1680 1681 1682 1683 1684
	if (state == ETHTOOL_ID_ACTIVE)
		val = 0xffff;
	else if (state == ETHTOOL_ID_INACTIVE)
		val = 0;
	else
		return -EINVAL;
1685

1686
	return t4_identify_port(adap, adap->fn, netdev2pinfo(dev)->viid, val);
1687 1688 1689 1690 1691 1692
}

static unsigned int from_fw_linkcaps(unsigned int type, unsigned int caps)
{
	unsigned int v = 0;

1693 1694
	if (type == FW_PORT_TYPE_BT_SGMII || type == FW_PORT_TYPE_BT_XFI ||
	    type == FW_PORT_TYPE_BT_XAUI) {
1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709
		v |= SUPPORTED_TP;
		if (caps & FW_PORT_CAP_SPEED_100M)
			v |= SUPPORTED_100baseT_Full;
		if (caps & FW_PORT_CAP_SPEED_1G)
			v |= SUPPORTED_1000baseT_Full;
		if (caps & FW_PORT_CAP_SPEED_10G)
			v |= SUPPORTED_10000baseT_Full;
	} else if (type == FW_PORT_TYPE_KX4 || type == FW_PORT_TYPE_KX) {
		v |= SUPPORTED_Backplane;
		if (caps & FW_PORT_CAP_SPEED_1G)
			v |= SUPPORTED_1000baseKX_Full;
		if (caps & FW_PORT_CAP_SPEED_10G)
			v |= SUPPORTED_10000baseKX4_Full;
	} else if (type == FW_PORT_TYPE_KR)
		v |= SUPPORTED_Backplane | SUPPORTED_10000baseKR_Full;
1710
	else if (type == FW_PORT_TYPE_BP_AP)
1711 1712 1713 1714 1715 1716
		v |= SUPPORTED_Backplane | SUPPORTED_10000baseR_FEC |
		     SUPPORTED_10000baseKR_Full | SUPPORTED_1000baseKX_Full;
	else if (type == FW_PORT_TYPE_BP4_AP)
		v |= SUPPORTED_Backplane | SUPPORTED_10000baseR_FEC |
		     SUPPORTED_10000baseKR_Full | SUPPORTED_1000baseKX_Full |
		     SUPPORTED_10000baseKX4_Full;
1717 1718
	else if (type == FW_PORT_TYPE_FIBER_XFI ||
		 type == FW_PORT_TYPE_FIBER_XAUI || type == FW_PORT_TYPE_SFP)
1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743
		v |= SUPPORTED_FIBRE;

	if (caps & FW_PORT_CAP_ANEG)
		v |= SUPPORTED_Autoneg;
	return v;
}

static unsigned int to_fw_linkcaps(unsigned int caps)
{
	unsigned int v = 0;

	if (caps & ADVERTISED_100baseT_Full)
		v |= FW_PORT_CAP_SPEED_100M;
	if (caps & ADVERTISED_1000baseT_Full)
		v |= FW_PORT_CAP_SPEED_1G;
	if (caps & ADVERTISED_10000baseT_Full)
		v |= FW_PORT_CAP_SPEED_10G;
	return v;
}

static int get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
	const struct port_info *p = netdev_priv(dev);

	if (p->port_type == FW_PORT_TYPE_BT_SGMII ||
1744
	    p->port_type == FW_PORT_TYPE_BT_XFI ||
1745 1746
	    p->port_type == FW_PORT_TYPE_BT_XAUI)
		cmd->port = PORT_TP;
1747 1748
	else if (p->port_type == FW_PORT_TYPE_FIBER_XFI ||
		 p->port_type == FW_PORT_TYPE_FIBER_XAUI)
1749
		cmd->port = PORT_FIBRE;
1750 1751 1752 1753 1754 1755 1756
	else if (p->port_type == FW_PORT_TYPE_SFP) {
		if (p->mod_type == FW_PORT_MOD_TYPE_TWINAX_PASSIVE ||
		    p->mod_type == FW_PORT_MOD_TYPE_TWINAX_ACTIVE)
			cmd->port = PORT_DA;
		else
			cmd->port = PORT_FIBRE;
	} else
1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772
		cmd->port = PORT_OTHER;

	if (p->mdio_addr >= 0) {
		cmd->phy_address = p->mdio_addr;
		cmd->transceiver = XCVR_EXTERNAL;
		cmd->mdio_support = p->port_type == FW_PORT_TYPE_BT_SGMII ?
			MDIO_SUPPORTS_C22 : MDIO_SUPPORTS_C45;
	} else {
		cmd->phy_address = 0;  /* not really, but no better option */
		cmd->transceiver = XCVR_INTERNAL;
		cmd->mdio_support = 0;
	}

	cmd->supported = from_fw_linkcaps(p->port_type, p->link_cfg.supported);
	cmd->advertising = from_fw_linkcaps(p->port_type,
					    p->link_cfg.advertising);
1773 1774
	ethtool_cmd_speed_set(cmd,
			      netif_carrier_ok(dev) ? p->link_cfg.speed : 0);
1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797
	cmd->duplex = DUPLEX_FULL;
	cmd->autoneg = p->link_cfg.autoneg;
	cmd->maxtxpkt = 0;
	cmd->maxrxpkt = 0;
	return 0;
}

static unsigned int speed_to_caps(int speed)
{
	if (speed == SPEED_100)
		return FW_PORT_CAP_SPEED_100M;
	if (speed == SPEED_1000)
		return FW_PORT_CAP_SPEED_1G;
	if (speed == SPEED_10000)
		return FW_PORT_CAP_SPEED_10G;
	return 0;
}

static int set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
	unsigned int cap;
	struct port_info *p = netdev_priv(dev);
	struct link_config *lc = &p->link_cfg;
1798
	u32 speed = ethtool_cmd_speed(cmd);
1799 1800 1801 1802 1803 1804 1805 1806 1807 1808

	if (cmd->duplex != DUPLEX_FULL)     /* only full-duplex supported */
		return -EINVAL;

	if (!(lc->supported & FW_PORT_CAP_ANEG)) {
		/*
		 * PHY offers a single speed.  See if that's what's
		 * being requested.
		 */
		if (cmd->autoneg == AUTONEG_DISABLE &&
1809 1810
		    (lc->supported & speed_to_caps(speed)))
			return 0;
1811 1812 1813 1814
		return -EINVAL;
	}

	if (cmd->autoneg == AUTONEG_DISABLE) {
1815
		cap = speed_to_caps(speed);
1816

1817 1818
		if (!(lc->supported & cap) || (speed == SPEED_1000) ||
		    (speed == SPEED_10000))
1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831
			return -EINVAL;
		lc->requested_speed = cap;
		lc->advertising = 0;
	} else {
		cap = to_fw_linkcaps(cmd->advertising);
		if (!(lc->supported & cap))
			return -EINVAL;
		lc->requested_speed = 0;
		lc->advertising = cap | FW_PORT_CAP_ANEG;
	}
	lc->autoneg = cmd->autoneg;

	if (netif_running(dev))
1832 1833
		return t4_link_start(p->adapter, p->adapter->fn, p->tx_chan,
				     lc);
1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864
	return 0;
}

static void get_pauseparam(struct net_device *dev,
			   struct ethtool_pauseparam *epause)
{
	struct port_info *p = netdev_priv(dev);

	epause->autoneg = (p->link_cfg.requested_fc & PAUSE_AUTONEG) != 0;
	epause->rx_pause = (p->link_cfg.fc & PAUSE_RX) != 0;
	epause->tx_pause = (p->link_cfg.fc & PAUSE_TX) != 0;
}

static int set_pauseparam(struct net_device *dev,
			  struct ethtool_pauseparam *epause)
{
	struct port_info *p = netdev_priv(dev);
	struct link_config *lc = &p->link_cfg;

	if (epause->autoneg == AUTONEG_DISABLE)
		lc->requested_fc = 0;
	else if (lc->supported & FW_PORT_CAP_ANEG)
		lc->requested_fc = PAUSE_AUTONEG;
	else
		return -EINVAL;

	if (epause->rx_pause)
		lc->requested_fc |= PAUSE_RX;
	if (epause->tx_pause)
		lc->requested_fc |= PAUSE_TX;
	if (netif_running(dev))
1865 1866
		return t4_link_start(p->adapter, p->adapter->fn, p->tx_chan,
				     lc);
1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979
	return 0;
}

static void get_sge_param(struct net_device *dev, struct ethtool_ringparam *e)
{
	const struct port_info *pi = netdev_priv(dev);
	const struct sge *s = &pi->adapter->sge;

	e->rx_max_pending = MAX_RX_BUFFERS;
	e->rx_mini_max_pending = MAX_RSPQ_ENTRIES;
	e->rx_jumbo_max_pending = 0;
	e->tx_max_pending = MAX_TXQ_ENTRIES;

	e->rx_pending = s->ethrxq[pi->first_qset].fl.size - 8;
	e->rx_mini_pending = s->ethrxq[pi->first_qset].rspq.size;
	e->rx_jumbo_pending = 0;
	e->tx_pending = s->ethtxq[pi->first_qset].q.size;
}

static int set_sge_param(struct net_device *dev, struct ethtool_ringparam *e)
{
	int i;
	const struct port_info *pi = netdev_priv(dev);
	struct adapter *adapter = pi->adapter;
	struct sge *s = &adapter->sge;

	if (e->rx_pending > MAX_RX_BUFFERS || e->rx_jumbo_pending ||
	    e->tx_pending > MAX_TXQ_ENTRIES ||
	    e->rx_mini_pending > MAX_RSPQ_ENTRIES ||
	    e->rx_mini_pending < MIN_RSPQ_ENTRIES ||
	    e->rx_pending < MIN_FL_ENTRIES || e->tx_pending < MIN_TXQ_ENTRIES)
		return -EINVAL;

	if (adapter->flags & FULL_INIT_DONE)
		return -EBUSY;

	for (i = 0; i < pi->nqsets; ++i) {
		s->ethtxq[pi->first_qset + i].q.size = e->tx_pending;
		s->ethrxq[pi->first_qset + i].fl.size = e->rx_pending + 8;
		s->ethrxq[pi->first_qset + i].rspq.size = e->rx_mini_pending;
	}
	return 0;
}

static int closest_timer(const struct sge *s, int time)
{
	int i, delta, match = 0, min_delta = INT_MAX;

	for (i = 0; i < ARRAY_SIZE(s->timer_val); i++) {
		delta = time - s->timer_val[i];
		if (delta < 0)
			delta = -delta;
		if (delta < min_delta) {
			min_delta = delta;
			match = i;
		}
	}
	return match;
}

static int closest_thres(const struct sge *s, int thres)
{
	int i, delta, match = 0, min_delta = INT_MAX;

	for (i = 0; i < ARRAY_SIZE(s->counter_val); i++) {
		delta = thres - s->counter_val[i];
		if (delta < 0)
			delta = -delta;
		if (delta < min_delta) {
			min_delta = delta;
			match = i;
		}
	}
	return match;
}

/*
 * Return a queue's interrupt hold-off time in us.  0 means no timer.
 */
static unsigned int qtimer_val(const struct adapter *adap,
			       const struct sge_rspq *q)
{
	unsigned int idx = q->intr_params >> 1;

	return idx < SGE_NTIMERS ? adap->sge.timer_val[idx] : 0;
}

/**
 *	set_rxq_intr_params - set a queue's interrupt holdoff parameters
 *	@adap: the adapter
 *	@q: the Rx queue
 *	@us: the hold-off time in us, or 0 to disable timer
 *	@cnt: the hold-off packet count, or 0 to disable counter
 *
 *	Sets an Rx queue's interrupt hold-off time and packet count.  At least
 *	one of the two needs to be enabled for the queue to generate interrupts.
 */
static int set_rxq_intr_params(struct adapter *adap, struct sge_rspq *q,
			       unsigned int us, unsigned int cnt)
{
	if ((us | cnt) == 0)
		cnt = 1;

	if (cnt) {
		int err;
		u32 v, new_idx;

		new_idx = closest_thres(&adap->sge, cnt);
		if (q->desc && q->pktcnt_idx != new_idx) {
			/* the queue has already been created, update it */
			v = FW_PARAMS_MNEM(FW_PARAMS_MNEM_DMAQ) |
			    FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DMAQ_IQ_INTCNTTHRESH) |
			    FW_PARAMS_PARAM_YZ(q->cntxt_id);
1980 1981
			err = t4_set_params(adap, adap->fn, adap->fn, 0, 1, &v,
					    &new_idx);
1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013
			if (err)
				return err;
		}
		q->pktcnt_idx = new_idx;
	}

	us = us == 0 ? 6 : closest_timer(&adap->sge, us);
	q->intr_params = QINTR_TIMER_IDX(us) | (cnt > 0 ? QINTR_CNT_EN : 0);
	return 0;
}

static int set_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
{
	const struct port_info *pi = netdev_priv(dev);
	struct adapter *adap = pi->adapter;

	return set_rxq_intr_params(adap, &adap->sge.ethrxq[pi->first_qset].rspq,
			c->rx_coalesce_usecs, c->rx_max_coalesced_frames);
}

static int get_coalesce(struct net_device *dev, struct ethtool_coalesce *c)
{
	const struct port_info *pi = netdev_priv(dev);
	const struct adapter *adap = pi->adapter;
	const struct sge_rspq *rq = &adap->sge.ethrxq[pi->first_qset].rspq;

	c->rx_coalesce_usecs = qtimer_val(adap, rq);
	c->rx_max_coalesced_frames = (rq->intr_params & QINTR_CNT_EN) ?
		adap->sge.counter_val[rq->pktcnt_idx] : 0;
	return 0;
}

2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029
/**
 *	eeprom_ptov - translate a physical EEPROM address to virtual
 *	@phys_addr: the physical EEPROM address
 *	@fn: the PCI function number
 *	@sz: size of function-specific area
 *
 *	Translate a physical EEPROM address to virtual.  The first 1K is
 *	accessed through virtual addresses starting at 31K, the rest is
 *	accessed through virtual addresses starting at 0.
 *
 *	The mapping is as follows:
 *	[0..1K) -> [31K..32K)
 *	[1K..1K+A) -> [31K-A..31K)
 *	[1K+A..ES) -> [0..ES-A-1K)
 *
 *	where A = @fn * @sz, and ES = EEPROM size.
2030
 */
2031
static int eeprom_ptov(unsigned int phys_addr, unsigned int fn, unsigned int sz)
2032
{
2033
	fn *= sz;
2034 2035
	if (phys_addr < 1024)
		return phys_addr + (31 << 10);
2036 2037
	if (phys_addr < 1024 + fn)
		return 31744 - fn + phys_addr - 1024;
2038
	if (phys_addr < EEPROMSIZE)
2039
		return phys_addr - 1024 - fn;
2040 2041 2042 2043 2044 2045 2046 2047
	return -EINVAL;
}

/*
 * The next two routines implement eeprom read/write from physical addresses.
 */
static int eeprom_rd_phys(struct adapter *adap, unsigned int phys_addr, u32 *v)
{
2048
	int vaddr = eeprom_ptov(phys_addr, adap->fn, EEPROMPFSIZE);
2049 2050 2051 2052 2053 2054 2055 2056

	if (vaddr >= 0)
		vaddr = pci_read_vpd(adap->pdev, vaddr, sizeof(u32), v);
	return vaddr < 0 ? vaddr : 0;
}

static int eeprom_wr_phys(struct adapter *adap, unsigned int phys_addr, u32 v)
{
2057
	int vaddr = eeprom_ptov(phys_addr, adap->fn, EEPROMPFSIZE);
2058 2059 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 2070 2071 2072 2073 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 2089 2090 2091 2092 2093 2094 2095 2096 2097 2098 2099

	if (vaddr >= 0)
		vaddr = pci_write_vpd(adap->pdev, vaddr, sizeof(u32), &v);
	return vaddr < 0 ? vaddr : 0;
}

#define EEPROM_MAGIC 0x38E2F10C

static int get_eeprom(struct net_device *dev, struct ethtool_eeprom *e,
		      u8 *data)
{
	int i, err = 0;
	struct adapter *adapter = netdev2adap(dev);

	u8 *buf = kmalloc(EEPROMSIZE, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	e->magic = EEPROM_MAGIC;
	for (i = e->offset & ~3; !err && i < e->offset + e->len; i += 4)
		err = eeprom_rd_phys(adapter, i, (u32 *)&buf[i]);

	if (!err)
		memcpy(data, buf + e->offset, e->len);
	kfree(buf);
	return err;
}

static int set_eeprom(struct net_device *dev, struct ethtool_eeprom *eeprom,
		      u8 *data)
{
	u8 *buf;
	int err = 0;
	u32 aligned_offset, aligned_len, *p;
	struct adapter *adapter = netdev2adap(dev);

	if (eeprom->magic != EEPROM_MAGIC)
		return -EINVAL;

	aligned_offset = eeprom->offset & ~3;
	aligned_len = (eeprom->len + (eeprom->offset & 3) + 3) & ~3;

2100 2101 2102 2103 2104 2105 2106 2107
	if (adapter->fn > 0) {
		u32 start = 1024 + adapter->fn * EEPROMPFSIZE;

		if (aligned_offset < start ||
		    aligned_offset + aligned_len > start + EEPROMPFSIZE)
			return -EPERM;
	}

2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 2129 2130 2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 2150 2151 2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 2190
	if (aligned_offset != eeprom->offset || aligned_len != eeprom->len) {
		/*
		 * RMW possibly needed for first or last words.
		 */
		buf = kmalloc(aligned_len, GFP_KERNEL);
		if (!buf)
			return -ENOMEM;
		err = eeprom_rd_phys(adapter, aligned_offset, (u32 *)buf);
		if (!err && aligned_len > 4)
			err = eeprom_rd_phys(adapter,
					     aligned_offset + aligned_len - 4,
					     (u32 *)&buf[aligned_len - 4]);
		if (err)
			goto out;
		memcpy(buf + (eeprom->offset & 3), data, eeprom->len);
	} else
		buf = data;

	err = t4_seeprom_wp(adapter, false);
	if (err)
		goto out;

	for (p = (u32 *)buf; !err && aligned_len; aligned_len -= 4, p++) {
		err = eeprom_wr_phys(adapter, aligned_offset, *p);
		aligned_offset += 4;
	}

	if (!err)
		err = t4_seeprom_wp(adapter, true);
out:
	if (buf != data)
		kfree(buf);
	return err;
}

static int set_flash(struct net_device *netdev, struct ethtool_flash *ef)
{
	int ret;
	const struct firmware *fw;
	struct adapter *adap = netdev2adap(netdev);

	ef->data[sizeof(ef->data) - 1] = '\0';
	ret = request_firmware(&fw, ef->data, adap->pdev_dev);
	if (ret < 0)
		return ret;

	ret = t4_load_fw(adap, fw->data, fw->size);
	release_firmware(fw);
	if (!ret)
		dev_info(adap->pdev_dev, "loaded firmware %s\n", ef->data);
	return ret;
}

#define WOL_SUPPORTED (WAKE_BCAST | WAKE_MAGIC)
#define BCAST_CRC 0xa0ccc1a6

static void get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
	wol->supported = WAKE_BCAST | WAKE_MAGIC;
	wol->wolopts = netdev2adap(dev)->wol;
	memset(&wol->sopass, 0, sizeof(wol->sopass));
}

static int set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
	int err = 0;
	struct port_info *pi = netdev_priv(dev);

	if (wol->wolopts & ~WOL_SUPPORTED)
		return -EINVAL;
	t4_wol_magic_enable(pi->adapter, pi->tx_chan,
			    (wol->wolopts & WAKE_MAGIC) ? dev->dev_addr : NULL);
	if (wol->wolopts & WAKE_BCAST) {
		err = t4_wol_pat_enable(pi->adapter, pi->tx_chan, 0xfe, ~0ULL,
					~0ULL, 0, false);
		if (!err)
			err = t4_wol_pat_enable(pi->adapter, pi->tx_chan, 1,
						~6ULL, ~0ULL, BCAST_CRC, true);
	} else
		t4_wol_pat_enable(pi->adapter, pi->tx_chan, 0, 0, 0, 0, false);
	return err;
}

2191
static int cxgb_set_features(struct net_device *dev, netdev_features_t features)
D
Dimitris Michailidis 已提交
2192
{
2193
	const struct port_info *pi = netdev_priv(dev);
2194
	netdev_features_t changed = dev->features ^ features;
2195 2196
	int err;

2197 2198
	if (!(changed & NETIF_F_HW_VLAN_RX))
		return 0;
2199

2200 2201 2202 2203 2204
	err = t4_set_rxmode(pi->adapter, pi->adapter->fn, pi->viid, -1,
			    -1, -1, -1,
			    !!(features & NETIF_F_HW_VLAN_RX), true);
	if (unlikely(err))
		dev->features = features ^ NETIF_F_HW_VLAN_RX;
2205
	return err;
D
Dimitris Michailidis 已提交
2206 2207
}

2208
static u32 get_rss_table_size(struct net_device *dev)
2209 2210 2211
{
	const struct port_info *pi = netdev_priv(dev);

2212 2213 2214 2215 2216 2217 2218 2219
	return pi->rss_size;
}

static int get_rss_table(struct net_device *dev, u32 *p)
{
	const struct port_info *pi = netdev_priv(dev);
	unsigned int n = pi->rss_size;

2220
	while (n--)
2221
		p[n] = pi->rss[n];
2222 2223 2224
	return 0;
}

2225
static int set_rss_table(struct net_device *dev, const u32 *p)
2226 2227 2228 2229
{
	unsigned int i;
	struct port_info *pi = netdev_priv(dev);

2230 2231
	for (i = 0; i < pi->rss_size; i++)
		pi->rss[i] = p[i];
2232 2233 2234 2235 2236 2237
	if (pi->adapter->flags & FULL_INIT_DONE)
		return write_rss(pi, pi->rss);
	return 0;
}

static int get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *info,
2238
		     u32 *rules)
2239
{
2240 2241
	const struct port_info *pi = netdev_priv(dev);

2242
	switch (info->cmd) {
2243 2244 2245 2246 2247 2248 2249 2250 2251 2252 2253 2254 2255 2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 2284 2285 2286 2287 2288 2289 2290 2291 2292
	case ETHTOOL_GRXFH: {
		unsigned int v = pi->rss_mode;

		info->data = 0;
		switch (info->flow_type) {
		case TCP_V4_FLOW:
			if (v & FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN)
				info->data = RXH_IP_SRC | RXH_IP_DST |
					     RXH_L4_B_0_1 | RXH_L4_B_2_3;
			else if (v & FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN)
				info->data = RXH_IP_SRC | RXH_IP_DST;
			break;
		case UDP_V4_FLOW:
			if ((v & FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN) &&
			    (v & FW_RSS_VI_CONFIG_CMD_UDPEN))
				info->data = RXH_IP_SRC | RXH_IP_DST |
					     RXH_L4_B_0_1 | RXH_L4_B_2_3;
			else if (v & FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN)
				info->data = RXH_IP_SRC | RXH_IP_DST;
			break;
		case SCTP_V4_FLOW:
		case AH_ESP_V4_FLOW:
		case IPV4_FLOW:
			if (v & FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN)
				info->data = RXH_IP_SRC | RXH_IP_DST;
			break;
		case TCP_V6_FLOW:
			if (v & FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN)
				info->data = RXH_IP_SRC | RXH_IP_DST |
					     RXH_L4_B_0_1 | RXH_L4_B_2_3;
			else if (v & FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN)
				info->data = RXH_IP_SRC | RXH_IP_DST;
			break;
		case UDP_V6_FLOW:
			if ((v & FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN) &&
			    (v & FW_RSS_VI_CONFIG_CMD_UDPEN))
				info->data = RXH_IP_SRC | RXH_IP_DST |
					     RXH_L4_B_0_1 | RXH_L4_B_2_3;
			else if (v & FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN)
				info->data = RXH_IP_SRC | RXH_IP_DST;
			break;
		case SCTP_V6_FLOW:
		case AH_ESP_V6_FLOW:
		case IPV6_FLOW:
			if (v & FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN)
				info->data = RXH_IP_SRC | RXH_IP_DST;
			break;
		}
		return 0;
	}
2293
	case ETHTOOL_GRXRINGS:
2294
		info->data = pi->nqsets;
2295 2296 2297 2298 2299
		return 0;
	}
	return -EOPNOTSUPP;
}

S
stephen hemminger 已提交
2300
static const struct ethtool_ops cxgb_ethtool_ops = {
2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316
	.get_settings      = get_settings,
	.set_settings      = set_settings,
	.get_drvinfo       = get_drvinfo,
	.get_msglevel      = get_msglevel,
	.set_msglevel      = set_msglevel,
	.get_ringparam     = get_sge_param,
	.set_ringparam     = set_sge_param,
	.get_coalesce      = get_coalesce,
	.set_coalesce      = set_coalesce,
	.get_eeprom_len    = get_eeprom_len,
	.get_eeprom        = get_eeprom,
	.set_eeprom        = set_eeprom,
	.get_pauseparam    = get_pauseparam,
	.set_pauseparam    = set_pauseparam,
	.get_link          = ethtool_op_get_link,
	.get_strings       = get_strings,
2317
	.set_phys_id       = identify_port,
2318 2319 2320 2321 2322 2323 2324
	.nway_reset        = restart_autoneg,
	.get_sset_count    = get_sset_count,
	.get_ethtool_stats = get_stats,
	.get_regs_len      = get_regs_len,
	.get_regs          = get_regs,
	.get_wol           = get_wol,
	.set_wol           = set_wol,
2325
	.get_rxnfc         = get_rxnfc,
2326
	.get_rxfh_indir_size = get_rss_table_size,
2327 2328
	.get_rxfh_indir    = get_rss_table,
	.set_rxfh_indir    = set_rss_table,
2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 2341 2342 2343 2344 2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 2363 2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377
	.flash_device      = set_flash,
};

/*
 * debugfs support
 */
static ssize_t mem_read(struct file *file, char __user *buf, size_t count,
			loff_t *ppos)
{
	loff_t pos = *ppos;
	loff_t avail = file->f_path.dentry->d_inode->i_size;
	unsigned int mem = (uintptr_t)file->private_data & 3;
	struct adapter *adap = file->private_data - mem;

	if (pos < 0)
		return -EINVAL;
	if (pos >= avail)
		return 0;
	if (count > avail - pos)
		count = avail - pos;

	while (count) {
		size_t len;
		int ret, ofst;
		__be32 data[16];

		if (mem == MEM_MC)
			ret = t4_mc_read(adap, pos, data, NULL);
		else
			ret = t4_edc_read(adap, mem, pos, data, NULL);
		if (ret)
			return ret;

		ofst = pos % sizeof(data);
		len = min(count, sizeof(data) - ofst);
		if (copy_to_user(buf, (u8 *)data + ofst, len))
			return -EFAULT;

		buf += len;
		pos += len;
		count -= len;
	}
	count = pos - *ppos;
	*ppos = pos;
	return count;
}

static const struct file_operations mem_debugfs_fops = {
	.owner   = THIS_MODULE,
2378
	.open    = simple_open,
2379
	.read    = mem_read,
2380
	.llseek  = default_llseek,
2381 2382
};

B
Bill Pemberton 已提交
2383
static void add_debugfs_mem(struct adapter *adap, const char *name,
2384
			    unsigned int idx, unsigned int size_mb)
2385 2386 2387 2388 2389 2390 2391 2392 2393
{
	struct dentry *de;

	de = debugfs_create_file(name, S_IRUSR, adap->debugfs_root,
				 (void *)adap + idx, &mem_debugfs_fops);
	if (de && de->d_inode)
		de->d_inode->i_size = size_mb << 20;
}

B
Bill Pemberton 已提交
2394
static int setup_debugfs(struct adapter *adap)
2395 2396 2397 2398 2399 2400 2401 2402 2403 2404 2405 2406 2407 2408 2409 2410 2411 2412 2413 2414 2415 2416 2417 2418 2419 2420 2421 2422 2423 2424 2425 2426 2427 2428 2429
{
	int i;

	if (IS_ERR_OR_NULL(adap->debugfs_root))
		return -1;

	i = t4_read_reg(adap, MA_TARGET_MEM_ENABLE);
	if (i & EDRAM0_ENABLE)
		add_debugfs_mem(adap, "edc0", MEM_EDC0, 5);
	if (i & EDRAM1_ENABLE)
		add_debugfs_mem(adap, "edc1", MEM_EDC1, 5);
	if (i & EXT_MEM_ENABLE)
		add_debugfs_mem(adap, "mc", MEM_MC,
			EXT_MEM_SIZE_GET(t4_read_reg(adap, MA_EXT_MEMORY_BAR)));
	if (adap->l2t)
		debugfs_create_file("l2t", S_IRUSR, adap->debugfs_root, adap,
				    &t4_l2t_fops);
	return 0;
}

/*
 * upper-layer driver support
 */

/*
 * Allocate an active-open TID and set it to the supplied value.
 */
int cxgb4_alloc_atid(struct tid_info *t, void *data)
{
	int atid = -1;

	spin_lock_bh(&t->atid_lock);
	if (t->afree) {
		union aopen_entry *p = t->afree;

V
Vipul Pandya 已提交
2430
		atid = (p - t->atid_tab) + t->atid_base;
2431 2432 2433 2434 2435 2436 2437 2438 2439 2440 2441 2442 2443 2444
		t->afree = p->next;
		p->data = data;
		t->atids_in_use++;
	}
	spin_unlock_bh(&t->atid_lock);
	return atid;
}
EXPORT_SYMBOL(cxgb4_alloc_atid);

/*
 * Release an active-open TID.
 */
void cxgb4_free_atid(struct tid_info *t, unsigned int atid)
{
V
Vipul Pandya 已提交
2445
	union aopen_entry *p = &t->atid_tab[atid - t->atid_base];
2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 2457 2458 2459 2460 2461 2462 2463 2464 2465 2466 2467 2468 2469 2470 2471 2472 2473 2474 2475 2476 2477 2478 2479 2480 2481 2482 2483 2484 2485 2486 2487 2488 2489 2490 2491 2492 2493 2494 2495 2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 2512 2513 2514 2515 2516 2517 2518

	spin_lock_bh(&t->atid_lock);
	p->next = t->afree;
	t->afree = p;
	t->atids_in_use--;
	spin_unlock_bh(&t->atid_lock);
}
EXPORT_SYMBOL(cxgb4_free_atid);

/*
 * Allocate a server TID and set it to the supplied value.
 */
int cxgb4_alloc_stid(struct tid_info *t, int family, void *data)
{
	int stid;

	spin_lock_bh(&t->stid_lock);
	if (family == PF_INET) {
		stid = find_first_zero_bit(t->stid_bmap, t->nstids);
		if (stid < t->nstids)
			__set_bit(stid, t->stid_bmap);
		else
			stid = -1;
	} else {
		stid = bitmap_find_free_region(t->stid_bmap, t->nstids, 2);
		if (stid < 0)
			stid = -1;
	}
	if (stid >= 0) {
		t->stid_tab[stid].data = data;
		stid += t->stid_base;
		t->stids_in_use++;
	}
	spin_unlock_bh(&t->stid_lock);
	return stid;
}
EXPORT_SYMBOL(cxgb4_alloc_stid);

/*
 * Release a server TID.
 */
void cxgb4_free_stid(struct tid_info *t, unsigned int stid, int family)
{
	stid -= t->stid_base;
	spin_lock_bh(&t->stid_lock);
	if (family == PF_INET)
		__clear_bit(stid, t->stid_bmap);
	else
		bitmap_release_region(t->stid_bmap, stid, 2);
	t->stid_tab[stid].data = NULL;
	t->stids_in_use--;
	spin_unlock_bh(&t->stid_lock);
}
EXPORT_SYMBOL(cxgb4_free_stid);

/*
 * Populate a TID_RELEASE WR.  Caller must properly size the skb.
 */
static void mk_tid_release(struct sk_buff *skb, unsigned int chan,
			   unsigned int tid)
{
	struct cpl_tid_release *req;

	set_wr_txq(skb, CPL_PRIORITY_SETUP, chan);
	req = (struct cpl_tid_release *)__skb_put(skb, sizeof(*req));
	INIT_TP_WR(req, tid);
	OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_TID_RELEASE, tid));
}

/*
 * Queue a TID release request and if necessary schedule a work queue to
 * process it.
 */
2519 2520
static void cxgb4_queue_tid_release(struct tid_info *t, unsigned int chan,
				    unsigned int tid)
2521 2522 2523 2524 2525 2526 2527 2528 2529 2530
{
	void **p = &t->tid_tab[tid];
	struct adapter *adap = container_of(t, struct adapter, tids);

	spin_lock_bh(&adap->tid_release_lock);
	*p = adap->tid_release_head;
	/* Low 2 bits encode the Tx channel number */
	adap->tid_release_head = (void **)((uintptr_t)p | chan);
	if (!adap->tid_release_task_busy) {
		adap->tid_release_task_busy = true;
2531
		queue_work(workq, &adap->tid_release_task);
2532 2533 2534 2535 2536 2537 2538 2539 2540 2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 2553 2554 2555 2556 2557 2558 2559 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2570 2571 2572 2573 2574 2575 2576 2577 2578 2579 2580 2581 2582 2583 2584 2585 2586 2587 2588 2589 2590 2591 2592 2593 2594 2595 2596
	}
	spin_unlock_bh(&adap->tid_release_lock);
}

/*
 * Process the list of pending TID release requests.
 */
static void process_tid_release_list(struct work_struct *work)
{
	struct sk_buff *skb;
	struct adapter *adap;

	adap = container_of(work, struct adapter, tid_release_task);

	spin_lock_bh(&adap->tid_release_lock);
	while (adap->tid_release_head) {
		void **p = adap->tid_release_head;
		unsigned int chan = (uintptr_t)p & 3;
		p = (void *)p - chan;

		adap->tid_release_head = *p;
		*p = NULL;
		spin_unlock_bh(&adap->tid_release_lock);

		while (!(skb = alloc_skb(sizeof(struct cpl_tid_release),
					 GFP_KERNEL)))
			schedule_timeout_uninterruptible(1);

		mk_tid_release(skb, chan, p - adap->tids.tid_tab);
		t4_ofld_send(adap, skb);
		spin_lock_bh(&adap->tid_release_lock);
	}
	adap->tid_release_task_busy = false;
	spin_unlock_bh(&adap->tid_release_lock);
}

/*
 * Release a TID and inform HW.  If we are unable to allocate the release
 * message we defer to a work queue.
 */
void cxgb4_remove_tid(struct tid_info *t, unsigned int chan, unsigned int tid)
{
	void *old;
	struct sk_buff *skb;
	struct adapter *adap = container_of(t, struct adapter, tids);

	old = t->tid_tab[tid];
	skb = alloc_skb(sizeof(struct cpl_tid_release), GFP_ATOMIC);
	if (likely(skb)) {
		t->tid_tab[tid] = NULL;
		mk_tid_release(skb, chan, tid);
		t4_ofld_send(adap, skb);
	} else
		cxgb4_queue_tid_release(t, chan, tid);
	if (old)
		atomic_dec(&t->tids_in_use);
}
EXPORT_SYMBOL(cxgb4_remove_tid);

/*
 * Allocate and initialize the TID tables.  Returns 0 on success.
 */
static int tid_init(struct tid_info *t)
{
	size_t size;
V
Vipul Pandya 已提交
2597
	unsigned int stid_bmap_size;
2598 2599
	unsigned int natids = t->natids;

V
Vipul Pandya 已提交
2600 2601 2602
	stid_bmap_size = BITS_TO_LONGS(t->nstids);
	size = t->ntids * sizeof(*t->tid_tab) +
	       natids * sizeof(*t->atid_tab) +
2603
	       t->nstids * sizeof(*t->stid_tab) +
V
Vipul Pandya 已提交
2604 2605 2606
	       stid_bmap_size * sizeof(long) +
	       t->nftids * sizeof(*t->ftid_tab);

2607 2608 2609 2610 2611 2612 2613
	t->tid_tab = t4_alloc_mem(size);
	if (!t->tid_tab)
		return -ENOMEM;

	t->atid_tab = (union aopen_entry *)&t->tid_tab[t->ntids];
	t->stid_tab = (struct serv_entry *)&t->atid_tab[natids];
	t->stid_bmap = (unsigned long *)&t->stid_tab[t->nstids];
V
Vipul Pandya 已提交
2614
	t->ftid_tab = (struct filter_entry *)&t->stid_bmap[stid_bmap_size];
2615 2616 2617 2618 2619 2620 2621 2622 2623 2624 2625 2626 2627 2628 2629 2630 2631 2632 2633 2634 2635 2636 2637 2638 2639 2640 2641 2642 2643 2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663
	spin_lock_init(&t->stid_lock);
	spin_lock_init(&t->atid_lock);

	t->stids_in_use = 0;
	t->afree = NULL;
	t->atids_in_use = 0;
	atomic_set(&t->tids_in_use, 0);

	/* Setup the free list for atid_tab and clear the stid bitmap. */
	if (natids) {
		while (--natids)
			t->atid_tab[natids - 1].next = &t->atid_tab[natids];
		t->afree = t->atid_tab;
	}
	bitmap_zero(t->stid_bmap, t->nstids);
	return 0;
}

/**
 *	cxgb4_create_server - create an IP server
 *	@dev: the device
 *	@stid: the server TID
 *	@sip: local IP address to bind server to
 *	@sport: the server's TCP port
 *	@queue: queue to direct messages from this server to
 *
 *	Create an IP server for the given port and address.
 *	Returns <0 on error and one of the %NET_XMIT_* values on success.
 */
int cxgb4_create_server(const struct net_device *dev, unsigned int stid,
			__be32 sip, __be16 sport, unsigned int queue)
{
	unsigned int chan;
	struct sk_buff *skb;
	struct adapter *adap;
	struct cpl_pass_open_req *req;

	skb = alloc_skb(sizeof(*req), GFP_KERNEL);
	if (!skb)
		return -ENOMEM;

	adap = netdev2adap(dev);
	req = (struct cpl_pass_open_req *)__skb_put(skb, sizeof(*req));
	INIT_TP_WR(req, 0);
	OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_OPEN_REQ, stid));
	req->local_port = sport;
	req->peer_port = htons(0);
	req->local_ip = sip;
	req->peer_ip = htonl(0);
2664
	chan = rxq_to_chan(&adap->sge, queue);
2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 2679 2680 2681 2682 2683 2684 2685 2686 2687 2688 2689 2690 2691 2692 2693 2694 2695 2696 2697 2698 2699 2700 2701 2702 2703 2704 2705 2706
	req->opt0 = cpu_to_be64(TX_CHAN(chan));
	req->opt1 = cpu_to_be64(CONN_POLICY_ASK |
				SYN_RSS_ENABLE | SYN_RSS_QUEUE(queue));
	return t4_mgmt_tx(adap, skb);
}
EXPORT_SYMBOL(cxgb4_create_server);

/**
 *	cxgb4_best_mtu - find the entry in the MTU table closest to an MTU
 *	@mtus: the HW MTU table
 *	@mtu: the target MTU
 *	@idx: index of selected entry in the MTU table
 *
 *	Returns the index and the value in the HW MTU table that is closest to
 *	but does not exceed @mtu, unless @mtu is smaller than any value in the
 *	table, in which case that smallest available value is selected.
 */
unsigned int cxgb4_best_mtu(const unsigned short *mtus, unsigned short mtu,
			    unsigned int *idx)
{
	unsigned int i = 0;

	while (i < NMTUS - 1 && mtus[i + 1] <= mtu)
		++i;
	if (idx)
		*idx = i;
	return mtus[i];
}
EXPORT_SYMBOL(cxgb4_best_mtu);

/**
 *	cxgb4_port_chan - get the HW channel of a port
 *	@dev: the net device for the port
 *
 *	Return the HW Tx channel of the given port.
 */
unsigned int cxgb4_port_chan(const struct net_device *dev)
{
	return netdev2pinfo(dev)->tx_chan;
}
EXPORT_SYMBOL(cxgb4_port_chan);

2707 2708 2709 2710 2711 2712 2713 2714 2715 2716
unsigned int cxgb4_dbfifo_count(const struct net_device *dev, int lpfifo)
{
	struct adapter *adap = netdev2adap(dev);
	u32 v;

	v = t4_read_reg(adap, A_SGE_DBFIFO_STATUS);
	return lpfifo ? G_LP_COUNT(v) : G_HP_COUNT(v);
}
EXPORT_SYMBOL(cxgb4_dbfifo_count);

2717 2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 2748 2749 2750 2751 2752 2753 2754 2755 2756 2757 2758 2759 2760 2761 2762 2763
/**
 *	cxgb4_port_viid - get the VI id of a port
 *	@dev: the net device for the port
 *
 *	Return the VI id of the given port.
 */
unsigned int cxgb4_port_viid(const struct net_device *dev)
{
	return netdev2pinfo(dev)->viid;
}
EXPORT_SYMBOL(cxgb4_port_viid);

/**
 *	cxgb4_port_idx - get the index of a port
 *	@dev: the net device for the port
 *
 *	Return the index of the given port.
 */
unsigned int cxgb4_port_idx(const struct net_device *dev)
{
	return netdev2pinfo(dev)->port_id;
}
EXPORT_SYMBOL(cxgb4_port_idx);

void cxgb4_get_tcp_stats(struct pci_dev *pdev, struct tp_tcp_stats *v4,
			 struct tp_tcp_stats *v6)
{
	struct adapter *adap = pci_get_drvdata(pdev);

	spin_lock(&adap->stats_lock);
	t4_tp_get_tcp_stats(adap, v4, v6);
	spin_unlock(&adap->stats_lock);
}
EXPORT_SYMBOL(cxgb4_get_tcp_stats);

void cxgb4_iscsi_init(struct net_device *dev, unsigned int tag_mask,
		      const unsigned int *pgsz_order)
{
	struct adapter *adap = netdev2adap(dev);

	t4_write_reg(adap, ULP_RX_ISCSI_TAGMASK, tag_mask);
	t4_write_reg(adap, ULP_RX_ISCSI_PSZ, HPZ0(pgsz_order[0]) |
		     HPZ1(pgsz_order[1]) | HPZ2(pgsz_order[2]) |
		     HPZ3(pgsz_order[3]));
}
EXPORT_SYMBOL(cxgb4_iscsi_init);

2764 2765 2766 2767 2768 2769 2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 2781 2782
int cxgb4_flush_eq_cache(struct net_device *dev)
{
	struct adapter *adap = netdev2adap(dev);
	int ret;

	ret = t4_fwaddrspace_write(adap, adap->mbox,
				   0xe1000000 + A_SGE_CTXT_CMD, 0x20000000);
	return ret;
}
EXPORT_SYMBOL(cxgb4_flush_eq_cache);

static int read_eq_indices(struct adapter *adap, u16 qid, u16 *pidx, u16 *cidx)
{
	u32 addr = t4_read_reg(adap, A_SGE_DBQ_CTXT_BADDR) + 24 * qid + 8;
	__be64 indices;
	int ret;

	ret = t4_mem_win_read_len(adap, addr, (__be32 *)&indices, 8);
	if (!ret) {
2783 2784
		*cidx = (be64_to_cpu(indices) >> 25) & 0xffff;
		*pidx = (be64_to_cpu(indices) >> 9) & 0xffff;
2785 2786 2787 2788 2789 2790 2791 2792 2793 2794 2795 2796 2797 2798 2799 2800 2801 2802 2803 2804 2805 2806 2807
	}
	return ret;
}

int cxgb4_sync_txq_pidx(struct net_device *dev, u16 qid, u16 pidx,
			u16 size)
{
	struct adapter *adap = netdev2adap(dev);
	u16 hw_pidx, hw_cidx;
	int ret;

	ret = read_eq_indices(adap, qid, &hw_pidx, &hw_cidx);
	if (ret)
		goto out;

	if (pidx != hw_pidx) {
		u16 delta;

		if (pidx >= hw_pidx)
			delta = pidx - hw_pidx;
		else
			delta = size - hw_pidx + pidx;
		wmb();
2808 2809
		t4_write_reg(adap, MYPF_REG(SGE_PF_KDOORBELL),
			     QID(qid) | PIDX(delta));
2810 2811 2812 2813 2814 2815
	}
out:
	return ret;
}
EXPORT_SYMBOL(cxgb4_sync_txq_pidx);

2816 2817 2818 2819 2820 2821 2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848
static struct pci_driver cxgb4_driver;

static void check_neigh_update(struct neighbour *neigh)
{
	const struct device *parent;
	const struct net_device *netdev = neigh->dev;

	if (netdev->priv_flags & IFF_802_1Q_VLAN)
		netdev = vlan_dev_real_dev(netdev);
	parent = netdev->dev.parent;
	if (parent && parent->driver == &cxgb4_driver.driver)
		t4_l2t_update(dev_get_drvdata(parent), neigh);
}

static int netevent_cb(struct notifier_block *nb, unsigned long event,
		       void *data)
{
	switch (event) {
	case NETEVENT_NEIGH_UPDATE:
		check_neigh_update(data);
		break;
	case NETEVENT_REDIRECT:
	default:
		break;
	}
	return 0;
}

static bool netevent_registered;
static struct notifier_block cxgb4_netevent_nb = {
	.notifier_call = netevent_cb
};

2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916
static void drain_db_fifo(struct adapter *adap, int usecs)
{
	u32 v;

	do {
		set_current_state(TASK_UNINTERRUPTIBLE);
		schedule_timeout(usecs_to_jiffies(usecs));
		v = t4_read_reg(adap, A_SGE_DBFIFO_STATUS);
		if (G_LP_COUNT(v) == 0 && G_HP_COUNT(v) == 0)
			break;
	} while (1);
}

static void disable_txq_db(struct sge_txq *q)
{
	spin_lock_irq(&q->db_lock);
	q->db_disabled = 1;
	spin_unlock_irq(&q->db_lock);
}

static void enable_txq_db(struct sge_txq *q)
{
	spin_lock_irq(&q->db_lock);
	q->db_disabled = 0;
	spin_unlock_irq(&q->db_lock);
}

static void disable_dbs(struct adapter *adap)
{
	int i;

	for_each_ethrxq(&adap->sge, i)
		disable_txq_db(&adap->sge.ethtxq[i].q);
	for_each_ofldrxq(&adap->sge, i)
		disable_txq_db(&adap->sge.ofldtxq[i].q);
	for_each_port(adap, i)
		disable_txq_db(&adap->sge.ctrlq[i].q);
}

static void enable_dbs(struct adapter *adap)
{
	int i;

	for_each_ethrxq(&adap->sge, i)
		enable_txq_db(&adap->sge.ethtxq[i].q);
	for_each_ofldrxq(&adap->sge, i)
		enable_txq_db(&adap->sge.ofldtxq[i].q);
	for_each_port(adap, i)
		enable_txq_db(&adap->sge.ctrlq[i].q);
}

static void sync_txq_pidx(struct adapter *adap, struct sge_txq *q)
{
	u16 hw_pidx, hw_cidx;
	int ret;

	spin_lock_bh(&q->db_lock);
	ret = read_eq_indices(adap, (u16)q->cntxt_id, &hw_pidx, &hw_cidx);
	if (ret)
		goto out;
	if (q->db_pidx != hw_pidx) {
		u16 delta;

		if (q->db_pidx >= hw_pidx)
			delta = q->db_pidx - hw_pidx;
		else
			delta = q->size - hw_pidx + q->db_pidx;
		wmb();
2917 2918
		t4_write_reg(adap, MYPF_REG(SGE_PF_KDOORBELL),
			     QID(q->cntxt_id) | PIDX(delta));
2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937
	}
out:
	q->db_disabled = 0;
	spin_unlock_bh(&q->db_lock);
	if (ret)
		CH_WARN(adap, "DB drop recovery failed.\n");
}
static void recover_all_queues(struct adapter *adap)
{
	int i;

	for_each_ethrxq(&adap->sge, i)
		sync_txq_pidx(adap, &adap->sge.ethtxq[i].q);
	for_each_ofldrxq(&adap->sge, i)
		sync_txq_pidx(adap, &adap->sge.ofldtxq[i].q);
	for_each_port(adap, i)
		sync_txq_pidx(adap, &adap->sge.ctrlq[i].q);
}

2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953
static void notify_rdma_uld(struct adapter *adap, enum cxgb4_control cmd)
{
	mutex_lock(&uld_mutex);
	if (adap->uld_handle[CXGB4_ULD_RDMA])
		ulds[CXGB4_ULD_RDMA].control(adap->uld_handle[CXGB4_ULD_RDMA],
				cmd);
	mutex_unlock(&uld_mutex);
}

static void process_db_full(struct work_struct *work)
{
	struct adapter *adap;

	adap = container_of(work, struct adapter, db_full_task);

	notify_rdma_uld(adap, CXGB4_CONTROL_DB_FULL);
2954
	drain_db_fifo(adap, dbfifo_drain_delay);
2955 2956 2957
	t4_set_reg_field(adap, SGE_INT_ENABLE3,
			 DBFIFO_HP_INT | DBFIFO_LP_INT,
			 DBFIFO_HP_INT | DBFIFO_LP_INT);
2958 2959 2960 2961 2962 2963 2964
	notify_rdma_uld(adap, CXGB4_CONTROL_DB_EMPTY);
}

static void process_db_drop(struct work_struct *work)
{
	struct adapter *adap;

2965
	adap = container_of(work, struct adapter, db_drop_task);
2966

2967 2968
	t4_set_reg_field(adap, A_SGE_DOORBELL_CONTROL, F_DROPPED_DB, 0);
	disable_dbs(adap);
2969
	notify_rdma_uld(adap, CXGB4_CONTROL_DB_DROP);
2970 2971 2972
	drain_db_fifo(adap, 1);
	recover_all_queues(adap);
	enable_dbs(adap);
2973 2974 2975 2976
}

void t4_db_full(struct adapter *adap)
{
2977 2978
	t4_set_reg_field(adap, SGE_INT_ENABLE3,
			 DBFIFO_HP_INT | DBFIFO_LP_INT, 0);
2979
	queue_work(workq, &adap->db_full_task);
2980 2981 2982 2983
}

void t4_db_dropped(struct adapter *adap)
{
2984
	queue_work(workq, &adap->db_drop_task);
2985 2986
}

2987 2988 2989 2990 2991 2992 2993 2994 2995 2996 2997 2998 2999 3000 3001 3002 3003 3004 3005 3006 3007 3008 3009 3010 3011
static void uld_attach(struct adapter *adap, unsigned int uld)
{
	void *handle;
	struct cxgb4_lld_info lli;

	lli.pdev = adap->pdev;
	lli.l2t = adap->l2t;
	lli.tids = &adap->tids;
	lli.ports = adap->port;
	lli.vr = &adap->vres;
	lli.mtus = adap->params.mtus;
	if (uld == CXGB4_ULD_RDMA) {
		lli.rxq_ids = adap->sge.rdma_rxq;
		lli.nrxq = adap->sge.rdmaqs;
	} else if (uld == CXGB4_ULD_ISCSI) {
		lli.rxq_ids = adap->sge.ofld_rxq;
		lli.nrxq = adap->sge.ofldqsets;
	}
	lli.ntxq = adap->sge.ofldqsets;
	lli.nchan = adap->params.nports;
	lli.nports = adap->params.nports;
	lli.wr_cred = adap->params.ofldq_wr_cred;
	lli.adapter_type = adap->params.rev;
	lli.iscsi_iolen = MAXRXDATA_GET(t4_read_reg(adap, TP_PARA_REG2));
	lli.udb_density = 1 << QUEUESPERPAGEPF0_GET(
3012 3013
			t4_read_reg(adap, SGE_EGRESS_QUEUES_PER_PAGE_PF) >>
			(adap->fn * 4));
3014
	lli.ucq_density = 1 << QUEUESPERPAGEPF0_GET(
3015 3016
			t4_read_reg(adap, SGE_INGRESS_QUEUES_PER_PAGE_PF) >>
			(adap->fn * 4));
3017 3018 3019
	lli.gts_reg = adap->regs + MYPF_REG(SGE_PF_GTS);
	lli.db_reg = adap->regs + MYPF_REG(SGE_PF_KDOORBELL);
	lli.fw_vers = adap->params.fw_vers;
3020
	lli.dbfifo_int_thresh = dbfifo_int_thresh;
3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034 3035

	handle = ulds[uld].add(&lli);
	if (IS_ERR(handle)) {
		dev_warn(adap->pdev_dev,
			 "could not attach to the %s driver, error %ld\n",
			 uld_str[uld], PTR_ERR(handle));
		return;
	}

	adap->uld_handle[uld] = handle;

	if (!netevent_registered) {
		register_netevent_notifier(&cxgb4_netevent_nb);
		netevent_registered = true;
	}
3036 3037 3038

	if (adap->flags & FULL_INIT_DONE)
		ulds[uld].state_change(handle, CXGB4_STATE_UP);
3039 3040 3041 3042 3043 3044 3045 3046 3047 3048 3049 3050 3051 3052 3053 3054 3055 3056 3057 3058 3059 3060 3061 3062 3063 3064 3065 3066 3067 3068 3069 3070 3071 3072 3073 3074 3075 3076 3077 3078 3079 3080 3081 3082 3083 3084 3085 3086 3087 3088 3089 3090 3091 3092 3093 3094 3095 3096 3097 3098 3099 3100 3101 3102 3103 3104 3105 3106 3107 3108 3109 3110 3111 3112 3113 3114 3115 3116 3117 3118 3119 3120 3121 3122 3123 3124 3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144
}

static void attach_ulds(struct adapter *adap)
{
	unsigned int i;

	mutex_lock(&uld_mutex);
	list_add_tail(&adap->list_node, &adapter_list);
	for (i = 0; i < CXGB4_ULD_MAX; i++)
		if (ulds[i].add)
			uld_attach(adap, i);
	mutex_unlock(&uld_mutex);
}

static void detach_ulds(struct adapter *adap)
{
	unsigned int i;

	mutex_lock(&uld_mutex);
	list_del(&adap->list_node);
	for (i = 0; i < CXGB4_ULD_MAX; i++)
		if (adap->uld_handle[i]) {
			ulds[i].state_change(adap->uld_handle[i],
					     CXGB4_STATE_DETACH);
			adap->uld_handle[i] = NULL;
		}
	if (netevent_registered && list_empty(&adapter_list)) {
		unregister_netevent_notifier(&cxgb4_netevent_nb);
		netevent_registered = false;
	}
	mutex_unlock(&uld_mutex);
}

static void notify_ulds(struct adapter *adap, enum cxgb4_state new_state)
{
	unsigned int i;

	mutex_lock(&uld_mutex);
	for (i = 0; i < CXGB4_ULD_MAX; i++)
		if (adap->uld_handle[i])
			ulds[i].state_change(adap->uld_handle[i], new_state);
	mutex_unlock(&uld_mutex);
}

/**
 *	cxgb4_register_uld - register an upper-layer driver
 *	@type: the ULD type
 *	@p: the ULD methods
 *
 *	Registers an upper-layer driver with this driver and notifies the ULD
 *	about any presently available devices that support its type.  Returns
 *	%-EBUSY if a ULD of the same type is already registered.
 */
int cxgb4_register_uld(enum cxgb4_uld type, const struct cxgb4_uld_info *p)
{
	int ret = 0;
	struct adapter *adap;

	if (type >= CXGB4_ULD_MAX)
		return -EINVAL;
	mutex_lock(&uld_mutex);
	if (ulds[type].add) {
		ret = -EBUSY;
		goto out;
	}
	ulds[type] = *p;
	list_for_each_entry(adap, &adapter_list, list_node)
		uld_attach(adap, type);
out:	mutex_unlock(&uld_mutex);
	return ret;
}
EXPORT_SYMBOL(cxgb4_register_uld);

/**
 *	cxgb4_unregister_uld - unregister an upper-layer driver
 *	@type: the ULD type
 *
 *	Unregisters an existing upper-layer driver.
 */
int cxgb4_unregister_uld(enum cxgb4_uld type)
{
	struct adapter *adap;

	if (type >= CXGB4_ULD_MAX)
		return -EINVAL;
	mutex_lock(&uld_mutex);
	list_for_each_entry(adap, &adapter_list, list_node)
		adap->uld_handle[type] = NULL;
	ulds[type].add = NULL;
	mutex_unlock(&uld_mutex);
	return 0;
}
EXPORT_SYMBOL(cxgb4_unregister_uld);

/**
 *	cxgb_up - enable the adapter
 *	@adap: adapter being enabled
 *
 *	Called when the first port is enabled, this function performs the
 *	actions necessary to make an adapter operational, such as completing
 *	the initialization of HW modules, and enabling interrupts.
 *
 *	Must be called with the rtnl lock held.
 */
static int cxgb_up(struct adapter *adap)
{
3145
	int err;
3146

3147 3148 3149 3150 3151 3152
	err = setup_sge_queues(adap);
	if (err)
		goto out;
	err = setup_rss(adap);
	if (err)
		goto freeq;
3153 3154

	if (adap->flags & USING_MSIX) {
3155
		name_msix_vecs(adap);
3156 3157 3158 3159 3160 3161 3162 3163 3164 3165 3166 3167 3168
		err = request_irq(adap->msix_info[0].vec, t4_nondata_intr, 0,
				  adap->msix_info[0].desc, adap);
		if (err)
			goto irq_err;

		err = request_msix_queue_irqs(adap);
		if (err) {
			free_irq(adap->msix_info[0].vec, adap);
			goto irq_err;
		}
	} else {
		err = request_irq(adap->pdev->irq, t4_intr_handler(adap),
				  (adap->flags & USING_MSI) ? 0 : IRQF_SHARED,
3169
				  adap->port[0]->name, adap);
3170 3171 3172 3173 3174 3175
		if (err)
			goto irq_err;
	}
	enable_rx(adap);
	t4_sge_start(adap);
	t4_intr_enable(adap);
3176
	adap->flags |= FULL_INIT_DONE;
3177 3178 3179 3180 3181
	notify_ulds(adap, CXGB4_STATE_UP);
 out:
	return err;
 irq_err:
	dev_err(adap->pdev_dev, "request_irq failed, err %d\n", err);
3182 3183
 freeq:
	t4_free_sge_resources(adap);
3184 3185 3186 3187 3188 3189 3190
	goto out;
}

static void cxgb_down(struct adapter *adapter)
{
	t4_intr_disable(adapter);
	cancel_work_sync(&adapter->tid_release_task);
3191 3192
	cancel_work_sync(&adapter->db_full_task);
	cancel_work_sync(&adapter->db_drop_task);
3193
	adapter->tid_release_task_busy = false;
D
Dimitris Michailidis 已提交
3194
	adapter->tid_release_head = NULL;
3195 3196 3197 3198 3199 3200 3201

	if (adapter->flags & USING_MSIX) {
		free_msix_queue_irqs(adapter);
		free_irq(adapter->msix_info[0].vec, adapter);
	} else
		free_irq(adapter->pdev->irq, adapter);
	quiesce_rx(adapter);
3202 3203 3204
	t4_sge_stop(adapter);
	t4_free_sge_resources(adapter);
	adapter->flags &= ~FULL_INIT_DONE;
3205 3206 3207 3208 3209 3210 3211 3212 3213 3214 3215
}

/*
 * net_device operations
 */
static int cxgb_open(struct net_device *dev)
{
	int err;
	struct port_info *pi = netdev_priv(dev);
	struct adapter *adapter = pi->adapter;

3216 3217
	netif_carrier_off(dev);

3218 3219 3220 3221 3222
	if (!(adapter->flags & FULL_INIT_DONE)) {
		err = cxgb_up(adapter);
		if (err < 0)
			return err;
	}
3223

3224 3225 3226 3227
	err = link_start(dev);
	if (!err)
		netif_tx_start_all_queues(dev);
	return err;
3228 3229 3230 3231 3232 3233 3234 3235 3236
}

static int cxgb_close(struct net_device *dev)
{
	struct port_info *pi = netdev_priv(dev);
	struct adapter *adapter = pi->adapter;

	netif_tx_stop_all_queues(dev);
	netif_carrier_off(dev);
3237
	return t4_enable_vi(adapter, adapter->fn, pi->viid, false, false);
3238 3239
}

V
Vipul Pandya 已提交
3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269 3270 3271 3272 3273
/* Return an error number if the indicated filter isn't writable ...
 */
static int writable_filter(struct filter_entry *f)
{
	if (f->locked)
		return -EPERM;
	if (f->pending)
		return -EBUSY;

	return 0;
}

/* Delete the filter at the specified index (if valid).  The checks for all
 * the common problems with doing this like the filter being locked, currently
 * pending in another operation, etc.
 */
static int delete_filter(struct adapter *adapter, unsigned int fidx)
{
	struct filter_entry *f;
	int ret;

	if (fidx >= adapter->tids.nftids)
		return -EINVAL;

	f = &adapter->tids.ftid_tab[fidx];
	ret = writable_filter(f);
	if (ret)
		return ret;
	if (f->valid)
		return del_filter_wr(adapter, fidx);

	return 0;
}

3274 3275
static struct rtnl_link_stats64 *cxgb_get_stats(struct net_device *dev,
						struct rtnl_link_stats64 *ns)
3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 3289 3290 3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 3305 3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317
{
	struct port_stats stats;
	struct port_info *p = netdev_priv(dev);
	struct adapter *adapter = p->adapter;

	spin_lock(&adapter->stats_lock);
	t4_get_port_stats(adapter, p->tx_chan, &stats);
	spin_unlock(&adapter->stats_lock);

	ns->tx_bytes   = stats.tx_octets;
	ns->tx_packets = stats.tx_frames;
	ns->rx_bytes   = stats.rx_octets;
	ns->rx_packets = stats.rx_frames;
	ns->multicast  = stats.rx_mcast_frames;

	/* detailed rx_errors */
	ns->rx_length_errors = stats.rx_jabber + stats.rx_too_long +
			       stats.rx_runt;
	ns->rx_over_errors   = 0;
	ns->rx_crc_errors    = stats.rx_fcs_err;
	ns->rx_frame_errors  = stats.rx_symbol_err;
	ns->rx_fifo_errors   = stats.rx_ovflow0 + stats.rx_ovflow1 +
			       stats.rx_ovflow2 + stats.rx_ovflow3 +
			       stats.rx_trunc0 + stats.rx_trunc1 +
			       stats.rx_trunc2 + stats.rx_trunc3;
	ns->rx_missed_errors = 0;

	/* detailed tx_errors */
	ns->tx_aborted_errors   = 0;
	ns->tx_carrier_errors   = 0;
	ns->tx_fifo_errors      = 0;
	ns->tx_heartbeat_errors = 0;
	ns->tx_window_errors    = 0;

	ns->tx_errors = stats.tx_error_frames;
	ns->rx_errors = stats.rx_symbol_err + stats.rx_fcs_err +
		ns->rx_length_errors + stats.rx_len_err + ns->rx_fifo_errors;
	return ns;
}

static int cxgb_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
{
3318
	unsigned int mbox;
3319 3320 3321 3322 3323 3324 3325 3326 3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340
	int ret = 0, prtad, devad;
	struct port_info *pi = netdev_priv(dev);
	struct mii_ioctl_data *data = (struct mii_ioctl_data *)&req->ifr_data;

	switch (cmd) {
	case SIOCGMIIPHY:
		if (pi->mdio_addr < 0)
			return -EOPNOTSUPP;
		data->phy_id = pi->mdio_addr;
		break;
	case SIOCGMIIREG:
	case SIOCSMIIREG:
		if (mdio_phy_id_is_c45(data->phy_id)) {
			prtad = mdio_phy_id_prtad(data->phy_id);
			devad = mdio_phy_id_devad(data->phy_id);
		} else if (data->phy_id < 32) {
			prtad = data->phy_id;
			devad = 0;
			data->reg_num &= 0x1f;
		} else
			return -EINVAL;

3341
		mbox = pi->adapter->fn;
3342
		if (cmd == SIOCGMIIREG)
3343
			ret = t4_mdio_rd(pi->adapter, mbox, prtad, devad,
3344 3345
					 data->reg_num, &data->val_out);
		else
3346
			ret = t4_mdio_wr(pi->adapter, mbox, prtad, devad,
3347 3348 3349 3350 3351 3352 3353 3354 3355 3356 3357 3358 3359 3360 3361 3362 3363 3364 3365 3366 3367
					 data->reg_num, data->val_in);
		break;
	default:
		return -EOPNOTSUPP;
	}
	return ret;
}

static void cxgb_set_rxmode(struct net_device *dev)
{
	/* unfortunately we can't return errors to the stack */
	set_rxmode(dev, -1, false);
}

static int cxgb_change_mtu(struct net_device *dev, int new_mtu)
{
	int ret;
	struct port_info *pi = netdev_priv(dev);

	if (new_mtu < 81 || new_mtu > MAX_MTU)         /* accommodate SACK */
		return -EINVAL;
3368 3369
	ret = t4_set_rxmode(pi->adapter, pi->adapter->fn, pi->viid, new_mtu, -1,
			    -1, -1, -1, true);
3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381
	if (!ret)
		dev->mtu = new_mtu;
	return ret;
}

static int cxgb_set_mac_addr(struct net_device *dev, void *p)
{
	int ret;
	struct sockaddr *addr = p;
	struct port_info *pi = netdev_priv(dev);

	if (!is_valid_ether_addr(addr->sa_data))
3382
		return -EADDRNOTAVAIL;
3383

3384 3385
	ret = t4_change_mac(pi->adapter, pi->adapter->fn, pi->viid,
			    pi->xact_addr_filt, addr->sa_data, true, true);
3386 3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 3409 3410 3411 3412 3413 3414
	if (ret < 0)
		return ret;

	memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
	pi->xact_addr_filt = ret;
	return 0;
}

#ifdef CONFIG_NET_POLL_CONTROLLER
static void cxgb_netpoll(struct net_device *dev)
{
	struct port_info *pi = netdev_priv(dev);
	struct adapter *adap = pi->adapter;

	if (adap->flags & USING_MSIX) {
		int i;
		struct sge_eth_rxq *rx = &adap->sge.ethrxq[pi->first_qset];

		for (i = pi->nqsets; i; i--, rx++)
			t4_sge_intr_msix(0, &rx->rspq);
	} else
		t4_intr_handler(adap)(0, adap);
}
#endif

static const struct net_device_ops cxgb4_netdev_ops = {
	.ndo_open             = cxgb_open,
	.ndo_stop             = cxgb_close,
	.ndo_start_xmit       = t4_eth_xmit,
3415
	.ndo_get_stats64      = cxgb_get_stats,
3416 3417
	.ndo_set_rx_mode      = cxgb_set_rxmode,
	.ndo_set_mac_address  = cxgb_set_mac_addr,
3418
	.ndo_set_features     = cxgb_set_features,
3419 3420 3421 3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447
	.ndo_validate_addr    = eth_validate_addr,
	.ndo_do_ioctl         = cxgb_ioctl,
	.ndo_change_mtu       = cxgb_change_mtu,
#ifdef CONFIG_NET_POLL_CONTROLLER
	.ndo_poll_controller  = cxgb_netpoll,
#endif
};

void t4_fatal_err(struct adapter *adap)
{
	t4_set_reg_field(adap, SGE_CONTROL, GLOBALENABLE, 0);
	t4_intr_disable(adap);
	dev_alert(adap->pdev_dev, "encountered fatal error, adapter stopped\n");
}

static void setup_memwin(struct adapter *adap)
{
	u32 bar0;

	bar0 = pci_resource_start(adap->pdev, 0);  /* truncation intentional */
	t4_write_reg(adap, PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN, 0),
		     (bar0 + MEMWIN0_BASE) | BIR(0) |
		     WINDOW(ilog2(MEMWIN0_APERTURE) - 10));
	t4_write_reg(adap, PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN, 1),
		     (bar0 + MEMWIN1_BASE) | BIR(0) |
		     WINDOW(ilog2(MEMWIN1_APERTURE) - 10));
	t4_write_reg(adap, PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN, 2),
		     (bar0 + MEMWIN2_BASE) | BIR(0) |
		     WINDOW(ilog2(MEMWIN2_APERTURE) - 10));
3448 3449 3450 3451
}

static void setup_memwin_rdma(struct adapter *adap)
{
3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466
	if (adap->vres.ocq.size) {
		unsigned int start, sz_kb;

		start = pci_resource_start(adap->pdev, 2) +
			OCQ_WIN_OFFSET(adap->pdev, &adap->vres);
		sz_kb = roundup_pow_of_two(adap->vres.ocq.size) >> 10;
		t4_write_reg(adap,
			     PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN, 3),
			     start | BIR(1) | WINDOW(ilog2(sz_kb)));
		t4_write_reg(adap,
			     PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET, 3),
			     adap->vres.ocq.start);
		t4_read_reg(adap,
			    PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET, 3));
	}
3467 3468
}

3469 3470 3471 3472 3473 3474 3475 3476 3477
static int adap_init1(struct adapter *adap, struct fw_caps_config_cmd *c)
{
	u32 v;
	int ret;

	/* get device capabilities */
	memset(c, 0, sizeof(*c));
	c->op_to_write = htonl(FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
			       FW_CMD_REQUEST | FW_CMD_READ);
3478
	c->cfvalid_to_len16 = htonl(FW_LEN16(*c));
3479
	ret = t4_wr_mbox(adap, adap->fn, c, sizeof(*c), c);
3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494
	if (ret < 0)
		return ret;

	/* select capabilities we'll be using */
	if (c->niccaps & htons(FW_CAPS_CONFIG_NIC_VM)) {
		if (!vf_acls)
			c->niccaps ^= htons(FW_CAPS_CONFIG_NIC_VM);
		else
			c->niccaps = htons(FW_CAPS_CONFIG_NIC_VM);
	} else if (vf_acls) {
		dev_err(adap->pdev_dev, "virtualization ACLs not supported");
		return ret;
	}
	c->op_to_write = htonl(FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
			       FW_CMD_REQUEST | FW_CMD_WRITE);
3495
	ret = t4_wr_mbox(adap, adap->fn, c, sizeof(*c), NULL);
3496 3497 3498
	if (ret < 0)
		return ret;

3499
	ret = t4_config_glbl_rss(adap, adap->fn,
3500 3501 3502 3503 3504 3505
				 FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL,
				 FW_RSS_GLB_CONFIG_CMD_TNLMAPEN |
				 FW_RSS_GLB_CONFIG_CMD_TNLALLLKP);
	if (ret < 0)
		return ret;

3506 3507
	ret = t4_cfg_pfvf(adap, adap->fn, adap->fn, 0, MAX_EGRQ, 64, MAX_INGQ,
			  0, 0, 4, 0xf, 0xf, 16, FW_CMD_CAP_PF, FW_CMD_CAP_PF);
3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518
	if (ret < 0)
		return ret;

	t4_sge_init(adap);

	/* tweak some settings */
	t4_write_reg(adap, TP_SHIFT_CNT, 0x64f8849);
	t4_write_reg(adap, ULP_RX_TDDP_PSZ, HPZ0(PAGE_SHIFT - 12));
	t4_write_reg(adap, TP_PIO_ADDR, TP_INGRESS_CONFIG);
	v = t4_read_reg(adap, TP_PIO_DATA);
	t4_write_reg(adap, TP_PIO_DATA, v & ~CSUM_HAS_PSEUDO_HDR);
3519 3520 3521

	/* get basic stuff going */
	return t4_early_init(adap, adap->fn);
3522 3523
}

3524 3525 3526 3527 3528
/*
 * Max # of ATIDs.  The absolute HW max is 16K but we keep it lower.
 */
#define MAX_ATIDS 8192U

3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555 3556 3557 3558 3559 3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590 3591 3592 3593 3594 3595 3596 3597 3598 3599 3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671
/*
 * Phase 0 of initialization: contact FW, obtain config, perform basic init.
 *
 * If the firmware we're dealing with has Configuration File support, then
 * we use that to perform all configuration
 */

/*
 * Tweak configuration based on module parameters, etc.  Most of these have
 * defaults assigned to them by Firmware Configuration Files (if we're using
 * them) but need to be explicitly set if we're using hard-coded
 * initialization.  But even in the case of using Firmware Configuration
 * Files, we'd like to expose the ability to change these via module
 * parameters so these are essentially common tweaks/settings for
 * Configuration Files and hard-coded initialization ...
 */
static int adap_init0_tweaks(struct adapter *adapter)
{
	/*
	 * Fix up various Host-Dependent Parameters like Page Size, Cache
	 * Line Size, etc.  The firmware default is for a 4KB Page Size and
	 * 64B Cache Line Size ...
	 */
	t4_fixup_host_params(adapter, PAGE_SIZE, L1_CACHE_BYTES);

	/*
	 * Process module parameters which affect early initialization.
	 */
	if (rx_dma_offset != 2 && rx_dma_offset != 0) {
		dev_err(&adapter->pdev->dev,
			"Ignoring illegal rx_dma_offset=%d, using 2\n",
			rx_dma_offset);
		rx_dma_offset = 2;
	}
	t4_set_reg_field(adapter, SGE_CONTROL,
			 PKTSHIFT_MASK,
			 PKTSHIFT(rx_dma_offset));

	/*
	 * Don't include the "IP Pseudo Header" in CPL_RX_PKT checksums: Linux
	 * adds the pseudo header itself.
	 */
	t4_tp_wr_bits_indirect(adapter, TP_INGRESS_CONFIG,
			       CSUM_HAS_PSEUDO_HDR, 0);

	return 0;
}

/*
 * Attempt to initialize the adapter via a Firmware Configuration File.
 */
static int adap_init0_config(struct adapter *adapter, int reset)
{
	struct fw_caps_config_cmd caps_cmd;
	const struct firmware *cf;
	unsigned long mtype = 0, maddr = 0;
	u32 finiver, finicsum, cfcsum;
	int ret, using_flash;

	/*
	 * Reset device if necessary.
	 */
	if (reset) {
		ret = t4_fw_reset(adapter, adapter->mbox,
				  PIORSTMODE | PIORST);
		if (ret < 0)
			goto bye;
	}

	/*
	 * If we have a T4 configuration file under /lib/firmware/cxgb4/,
	 * then use that.  Otherwise, use the configuration file stored
	 * in the adapter flash ...
	 */
	ret = request_firmware(&cf, FW_CFNAME, adapter->pdev_dev);
	if (ret < 0) {
		using_flash = 1;
		mtype = FW_MEMTYPE_CF_FLASH;
		maddr = t4_flash_cfg_addr(adapter);
	} else {
		u32 params[7], val[7];

		using_flash = 0;
		if (cf->size >= FLASH_CFG_MAX_SIZE)
			ret = -ENOMEM;
		else {
			params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) |
			     FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_CF));
			ret = t4_query_params(adapter, adapter->mbox,
					      adapter->fn, 0, 1, params, val);
			if (ret == 0) {
				/*
				 * For t4_memory_write() below addresses and
				 * sizes have to be in terms of multiples of 4
				 * bytes.  So, if the Configuration File isn't
				 * a multiple of 4 bytes in length we'll have
				 * to write that out separately since we can't
				 * guarantee that the bytes following the
				 * residual byte in the buffer returned by
				 * request_firmware() are zeroed out ...
				 */
				size_t resid = cf->size & 0x3;
				size_t size = cf->size & ~0x3;
				__be32 *data = (__be32 *)cf->data;

				mtype = FW_PARAMS_PARAM_Y_GET(val[0]);
				maddr = FW_PARAMS_PARAM_Z_GET(val[0]) << 16;

				ret = t4_memory_write(adapter, mtype, maddr,
						      size, data);
				if (ret == 0 && resid != 0) {
					union {
						__be32 word;
						char buf[4];
					} last;
					int i;

					last.word = data[size >> 2];
					for (i = resid; i < 4; i++)
						last.buf[i] = 0;
					ret = t4_memory_write(adapter, mtype,
							      maddr + size,
							      4, &last.word);
				}
			}
		}

		release_firmware(cf);
		if (ret)
			goto bye;
	}

	/*
	 * Issue a Capability Configuration command to the firmware to get it
	 * to parse the Configuration File.  We don't use t4_fw_config_file()
	 * because we want the ability to modify various features after we've
	 * processed the configuration file ...
	 */
	memset(&caps_cmd, 0, sizeof(caps_cmd));
	caps_cmd.op_to_write =
		htonl(FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
		      FW_CMD_REQUEST |
		      FW_CMD_READ);
3672
	caps_cmd.cfvalid_to_len16 =
3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696
		htonl(FW_CAPS_CONFIG_CMD_CFVALID |
		      FW_CAPS_CONFIG_CMD_MEMTYPE_CF(mtype) |
		      FW_CAPS_CONFIG_CMD_MEMADDR64K_CF(maddr >> 16) |
		      FW_LEN16(caps_cmd));
	ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, sizeof(caps_cmd),
			 &caps_cmd);
	if (ret < 0)
		goto bye;

	finiver = ntohl(caps_cmd.finiver);
	finicsum = ntohl(caps_cmd.finicsum);
	cfcsum = ntohl(caps_cmd.cfcsum);
	if (finicsum != cfcsum)
		dev_warn(adapter->pdev_dev, "Configuration File checksum "\
			 "mismatch: [fini] csum=%#x, computed csum=%#x\n",
			 finicsum, cfcsum);

	/*
	 * And now tell the firmware to use the configuration we just loaded.
	 */
	caps_cmd.op_to_write =
		htonl(FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
		      FW_CMD_REQUEST |
		      FW_CMD_WRITE);
3697
	caps_cmd.cfvalid_to_len16 = htonl(FW_LEN16(caps_cmd));
3698 3699 3700 3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744
	ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, sizeof(caps_cmd),
			 NULL);
	if (ret < 0)
		goto bye;

	/*
	 * Tweak configuration based on system architecture, module
	 * parameters, etc.
	 */
	ret = adap_init0_tweaks(adapter);
	if (ret < 0)
		goto bye;

	/*
	 * And finally tell the firmware to initialize itself using the
	 * parameters from the Configuration File.
	 */
	ret = t4_fw_initialize(adapter, adapter->mbox);
	if (ret < 0)
		goto bye;

	/*
	 * Return successfully and note that we're operating with parameters
	 * not supplied by the driver, rather than from hard-wired
	 * initialization constants burried in the driver.
	 */
	adapter->flags |= USING_SOFT_PARAMS;
	dev_info(adapter->pdev_dev, "Successfully configured using Firmware "\
		 "Configuration File %s, version %#x, computed checksum %#x\n",
		 (using_flash
		  ? "in device FLASH"
		  : "/lib/firmware/" FW_CFNAME),
		 finiver, cfcsum);
	return 0;

	/*
	 * Something bad happened.  Return the error ...  (If the "error"
	 * is that there's no Configuration File on the adapter we don't
	 * want to issue a warning since this is fairly common.)
	 */
bye:
	if (ret != -ENOENT)
		dev_warn(adapter->pdev_dev, "Configuration file error %d\n",
			 -ret);
	return ret;
}

3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 3770 3771
/*
 * Attempt to initialize the adapter via hard-coded, driver supplied
 * parameters ...
 */
static int adap_init0_no_config(struct adapter *adapter, int reset)
{
	struct sge *s = &adapter->sge;
	struct fw_caps_config_cmd caps_cmd;
	u32 v;
	int i, ret;

	/*
	 * Reset device if necessary
	 */
	if (reset) {
		ret = t4_fw_reset(adapter, adapter->mbox,
				  PIORSTMODE | PIORST);
		if (ret < 0)
			goto bye;
	}

	/*
	 * Get device capabilities and select which we'll be using.
	 */
	memset(&caps_cmd, 0, sizeof(caps_cmd));
	caps_cmd.op_to_write = htonl(FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
				     FW_CMD_REQUEST | FW_CMD_READ);
3772
	caps_cmd.cfvalid_to_len16 = htonl(FW_LEN16(caps_cmd));
3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795 3796 3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 3843 3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885 3886 3887 3888 3889 3890 3891 3892
	ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, sizeof(caps_cmd),
			 &caps_cmd);
	if (ret < 0)
		goto bye;

	if (caps_cmd.niccaps & htons(FW_CAPS_CONFIG_NIC_VM)) {
		if (!vf_acls)
			caps_cmd.niccaps ^= htons(FW_CAPS_CONFIG_NIC_VM);
		else
			caps_cmd.niccaps = htons(FW_CAPS_CONFIG_NIC_VM);
	} else if (vf_acls) {
		dev_err(adapter->pdev_dev, "virtualization ACLs not supported");
		goto bye;
	}
	caps_cmd.op_to_write = htonl(FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
			      FW_CMD_REQUEST | FW_CMD_WRITE);
	ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, sizeof(caps_cmd),
			 NULL);
	if (ret < 0)
		goto bye;

	/*
	 * Tweak configuration based on system architecture, module
	 * parameters, etc.
	 */
	ret = adap_init0_tweaks(adapter);
	if (ret < 0)
		goto bye;

	/*
	 * Select RSS Global Mode we want to use.  We use "Basic Virtual"
	 * mode which maps each Virtual Interface to its own section of
	 * the RSS Table and we turn on all map and hash enables ...
	 */
	adapter->flags |= RSS_TNLALLLOOKUP;
	ret = t4_config_glbl_rss(adapter, adapter->mbox,
				 FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL,
				 FW_RSS_GLB_CONFIG_CMD_TNLMAPEN |
				 FW_RSS_GLB_CONFIG_CMD_HASHTOEPLITZ |
				 ((adapter->flags & RSS_TNLALLLOOKUP) ?
					FW_RSS_GLB_CONFIG_CMD_TNLALLLKP : 0));
	if (ret < 0)
		goto bye;

	/*
	 * Set up our own fundamental resource provisioning ...
	 */
	ret = t4_cfg_pfvf(adapter, adapter->mbox, adapter->fn, 0,
			  PFRES_NEQ, PFRES_NETHCTRL,
			  PFRES_NIQFLINT, PFRES_NIQ,
			  PFRES_TC, PFRES_NVI,
			  FW_PFVF_CMD_CMASK_MASK,
			  pfvfres_pmask(adapter, adapter->fn, 0),
			  PFRES_NEXACTF,
			  PFRES_R_CAPS, PFRES_WX_CAPS);
	if (ret < 0)
		goto bye;

	/*
	 * Perform low level SGE initialization.  We need to do this before we
	 * send the firmware the INITIALIZE command because that will cause
	 * any other PF Drivers which are waiting for the Master
	 * Initialization to proceed forward.
	 */
	for (i = 0; i < SGE_NTIMERS - 1; i++)
		s->timer_val[i] = min(intr_holdoff[i], MAX_SGE_TIMERVAL);
	s->timer_val[SGE_NTIMERS - 1] = MAX_SGE_TIMERVAL;
	s->counter_val[0] = 1;
	for (i = 1; i < SGE_NCOUNTERS; i++)
		s->counter_val[i] = min(intr_cnt[i - 1],
					THRESHOLD_0_GET(THRESHOLD_0_MASK));
	t4_sge_init(adapter);

#ifdef CONFIG_PCI_IOV
	/*
	 * Provision resource limits for Virtual Functions.  We currently
	 * grant them all the same static resource limits except for the Port
	 * Access Rights Mask which we're assigning based on the PF.  All of
	 * the static provisioning stuff for both the PF and VF really needs
	 * to be managed in a persistent manner for each device which the
	 * firmware controls.
	 */
	{
		int pf, vf;

		for (pf = 0; pf < ARRAY_SIZE(num_vf); pf++) {
			if (num_vf[pf] <= 0)
				continue;

			/* VF numbering starts at 1! */
			for (vf = 1; vf <= num_vf[pf]; vf++) {
				ret = t4_cfg_pfvf(adapter, adapter->mbox,
						  pf, vf,
						  VFRES_NEQ, VFRES_NETHCTRL,
						  VFRES_NIQFLINT, VFRES_NIQ,
						  VFRES_TC, VFRES_NVI,
						  FW_PFVF_CMD_CMASK_GET(
						  FW_PFVF_CMD_CMASK_MASK),
						  pfvfres_pmask(
						  adapter, pf, vf),
						  VFRES_NEXACTF,
						  VFRES_R_CAPS, VFRES_WX_CAPS);
				if (ret < 0)
					dev_warn(adapter->pdev_dev,
						 "failed to "\
						 "provision pf/vf=%d/%d; "
						 "err=%d\n", pf, vf, ret);
			}
		}
	}
#endif

	/*
	 * Set up the default filter mode.  Later we'll want to implement this
	 * via a firmware command, etc. ...  This needs to be done before the
	 * firmare initialization command ...  If the selected set of fields
	 * isn't equal to the default value, we'll need to make sure that the
	 * field selections will fit in the 36-bit budget.
	 */
	if (tp_vlan_pri_map != TP_VLAN_PRI_MAP_DEFAULT) {
3893
		int j, bits = 0;
3894

3895 3896
		for (j = TP_VLAN_PRI_MAP_FIRST; j <= TP_VLAN_PRI_MAP_LAST; j++)
			switch (tp_vlan_pri_map & (1 << j)) {
3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988
			case 0:
				/* compressed filter field not enabled */
				break;
			case FCOE_MASK:
				bits +=  1;
				break;
			case PORT_MASK:
				bits +=  3;
				break;
			case VNIC_ID_MASK:
				bits += 17;
				break;
			case VLAN_MASK:
				bits += 17;
				break;
			case TOS_MASK:
				bits +=  8;
				break;
			case PROTOCOL_MASK:
				bits +=  8;
				break;
			case ETHERTYPE_MASK:
				bits += 16;
				break;
			case MACMATCH_MASK:
				bits +=  9;
				break;
			case MPSHITTYPE_MASK:
				bits +=  3;
				break;
			case FRAGMENTATION_MASK:
				bits +=  1;
				break;
			}

		if (bits > 36) {
			dev_err(adapter->pdev_dev,
				"tp_vlan_pri_map=%#x needs %d bits > 36;"\
				" using %#x\n", tp_vlan_pri_map, bits,
				TP_VLAN_PRI_MAP_DEFAULT);
			tp_vlan_pri_map = TP_VLAN_PRI_MAP_DEFAULT;
		}
	}
	v = tp_vlan_pri_map;
	t4_write_indirect(adapter, TP_PIO_ADDR, TP_PIO_DATA,
			  &v, 1, TP_VLAN_PRI_MAP);

	/*
	 * We need Five Tuple Lookup mode to be set in TP_GLOBAL_CONFIG order
	 * to support any of the compressed filter fields above.  Newer
	 * versions of the firmware do this automatically but it doesn't hurt
	 * to set it here.  Meanwhile, we do _not_ need to set Lookup Every
	 * Packet in TP_INGRESS_CONFIG to support matching non-TCP packets
	 * since the firmware automatically turns this on and off when we have
	 * a non-zero number of filters active (since it does have a
	 * performance impact).
	 */
	if (tp_vlan_pri_map)
		t4_set_reg_field(adapter, TP_GLOBAL_CONFIG,
				 FIVETUPLELOOKUP_MASK,
				 FIVETUPLELOOKUP_MASK);

	/*
	 * Tweak some settings.
	 */
	t4_write_reg(adapter, TP_SHIFT_CNT, SYNSHIFTMAX(6) |
		     RXTSHIFTMAXR1(4) | RXTSHIFTMAXR2(15) |
		     PERSHIFTBACKOFFMAX(8) | PERSHIFTMAX(8) |
		     KEEPALIVEMAXR1(4) | KEEPALIVEMAXR2(9));

	/*
	 * Get basic stuff going by issuing the Firmware Initialize command.
	 * Note that this _must_ be after all PFVF commands ...
	 */
	ret = t4_fw_initialize(adapter, adapter->mbox);
	if (ret < 0)
		goto bye;

	/*
	 * Return successfully!
	 */
	dev_info(adapter->pdev_dev, "Successfully configured using built-in "\
		 "driver parameters\n");
	return 0;

	/*
	 * Something bad happened.  Return the error ...
	 */
bye:
	return ret;
}

3989 3990 3991 3992 3993 3994 3995 3996 3997
/*
 * Phase 0 of initialization: contact FW, obtain config, perform basic init.
 */
static int adap_init0(struct adapter *adap)
{
	int ret;
	u32 v, port_vec;
	enum dev_state state;
	u32 params[7], val[7];
3998
	struct fw_caps_config_cmd caps_cmd;
3999
	int reset = 1, j;
4000

4001 4002 4003 4004 4005 4006 4007 4008
	/*
	 * Contact FW, advertising Master capability (and potentially forcing
	 * ourselves as the Master PF if our module parameter force_init is
	 * set).
	 */
	ret = t4_fw_hello(adap, adap->mbox, adap->fn,
			  force_init ? MASTER_MUST : MASTER_MAY,
			  &state);
4009 4010 4011 4012 4013
	if (ret < 0) {
		dev_err(adap->pdev_dev, "could not connect to FW, error %d\n",
			ret);
		return ret;
	}
4014 4015 4016 4017
	if (ret == adap->mbox)
		adap->flags |= MASTER_PF;
	if (force_init && state == DEV_STATE_INIT)
		state = DEV_STATE_UNINIT;
4018

4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 4037 4038 4039 4040 4041
	/*
	 * If we're the Master PF Driver and the device is uninitialized,
	 * then let's consider upgrading the firmware ...  (We always want
	 * to check the firmware version number in order to A. get it for
	 * later reporting and B. to warn if the currently loaded firmware
	 * is excessively mismatched relative to the driver.)
	 */
	ret = t4_check_fw_version(adap);
	if ((adap->flags & MASTER_PF) && state != DEV_STATE_INIT) {
		if (ret == -EINVAL || ret > 0) {
			if (upgrade_fw(adap) >= 0) {
				/*
				 * Note that the chip was reset as part of the
				 * firmware upgrade so we don't reset it again
				 * below and grab the new firmware version.
				 */
				reset = 0;
				ret = t4_check_fw_version(adap);
			}
		}
		if (ret < 0)
			return ret;
	}
4042

4043 4044 4045 4046 4047 4048 4049 4050
	/*
	 * Grab VPD parameters.  This should be done after we establish a
	 * connection to the firmware since some of the VPD parameters
	 * (notably the Core Clock frequency) are retrieved via requests to
	 * the firmware.  On the other hand, we need these fairly early on
	 * so we do this right after getting ahold of the firmware.
	 */
	ret = get_vpd_params(adap, &adap->params.vpd);
4051 4052 4053
	if (ret < 0)
		goto bye;

4054
	/*
4055 4056 4057
	 * Find out what ports are available to us.  Note that we need to do
	 * this before calling adap_init0_no_config() since it needs nports
	 * and portvec ...
4058 4059 4060 4061 4062
	 */
	v =
	    FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) |
	    FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_PORTVEC);
	ret = t4_query_params(adap, adap->mbox, adap->fn, 0, 1, &v, &port_vec);
4063 4064 4065
	if (ret < 0)
		goto bye;

4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088
	adap->params.nports = hweight32(port_vec);
	adap->params.portvec = port_vec;

	/*
	 * If the firmware is initialized already (and we're not forcing a
	 * master initialization), note that we're living with existing
	 * adapter parameters.  Otherwise, it's time to try initializing the
	 * adapter ...
	 */
	if (state == DEV_STATE_INIT) {
		dev_info(adap->pdev_dev, "Coming up as %s: "\
			 "Adapter already initialized\n",
			 adap->flags & MASTER_PF ? "MASTER" : "SLAVE");
		adap->flags |= USING_SOFT_PARAMS;
	} else {
		dev_info(adap->pdev_dev, "Coming up as MASTER: "\
			 "Initializing adapter\n");

		/*
		 * If the firmware doesn't support Configuration
		 * Files warn user and exit,
		 */
		if (ret < 0)
4089
			dev_warn(adap->pdev_dev, "Firmware doesn't support "
4090
				 "configuration file.\n");
4091 4092
		if (force_old_init)
			ret = adap_init0_no_config(adap, reset);
4093 4094
		else {
			/*
4095 4096
			 * Find out whether we're dealing with a version of
			 * the firmware which has configuration file support.
4097
			 */
4098 4099 4100 4101
			params[0] = (FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) |
				     FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_CF));
			ret = t4_query_params(adap, adap->mbox, adap->fn, 0, 1,
					      params, val);
4102

4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118 4119 4120 4121 4122 4123 4124 4125 4126 4127 4128
			/*
			 * If the firmware doesn't support Configuration
			 * Files, use the old Driver-based, hard-wired
			 * initialization.  Otherwise, try using the
			 * Configuration File support and fall back to the
			 * Driver-based initialization if there's no
			 * Configuration File found.
			 */
			if (ret < 0)
				ret = adap_init0_no_config(adap, reset);
			else {
				/*
				 * The firmware provides us with a memory
				 * buffer where we can load a Configuration
				 * File from the host if we want to override
				 * the Configuration File in flash.
				 */

				ret = adap_init0_config(adap, reset);
				if (ret == -ENOENT) {
					dev_info(adap->pdev_dev,
					    "No Configuration File present "
					    "on adapter.  Using hard-wired "
					    "configuration parameters.\n");
					ret = adap_init0_no_config(adap, reset);
				}
4129 4130 4131 4132 4133 4134 4135 4136 4137 4138 4139 4140 4141 4142 4143 4144 4145 4146 4147 4148 4149 4150 4151
			}
		}
		if (ret < 0) {
			dev_err(adap->pdev_dev,
				"could not initialize adapter, error %d\n",
				-ret);
			goto bye;
		}
	}

	/*
	 * If we're living with non-hard-coded parameters (either from a
	 * Firmware Configuration File or values programmed by a different PF
	 * Driver), give the SGE code a chance to pull in anything that it
	 * needs ...  Note that this must be called after we retrieve our VPD
	 * parameters in order to know how to convert core ticks to seconds.
	 */
	if (adap->flags & USING_SOFT_PARAMS) {
		ret = t4_sge_init(adap);
		if (ret < 0)
			goto bye;
	}

4152 4153 4154
	if (is_bypass_device(adap->pdev->device))
		adap->params.bypass = 1;

4155 4156 4157 4158 4159 4160 4161
	/*
	 * Grab some of our basic fundamental operating parameters.
	 */
#define FW_PARAM_DEV(param) \
	(FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) | \
	FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_##param))

4162
#define FW_PARAM_PFVF(param) \
4163 4164 4165 4166
	FW_PARAMS_MNEM(FW_PARAMS_MNEM_PFVF) | \
	FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_PFVF_##param)|  \
	FW_PARAMS_PARAM_Y(0) | \
	FW_PARAMS_PARAM_Z(0)
4167

4168
	params[0] = FW_PARAM_PFVF(EQ_START);
4169 4170 4171 4172
	params[1] = FW_PARAM_PFVF(L2T_START);
	params[2] = FW_PARAM_PFVF(L2T_END);
	params[3] = FW_PARAM_PFVF(FILTER_START);
	params[4] = FW_PARAM_PFVF(FILTER_END);
4173
	params[5] = FW_PARAM_PFVF(IQFLINT_START);
4174
	ret = t4_query_params(adap, adap->mbox, adap->fn, 0, 6, params, val);
4175 4176
	if (ret < 0)
		goto bye;
4177 4178 4179
	adap->sge.egr_start = val[0];
	adap->l2t_start = val[1];
	adap->l2t_end = val[2];
4180 4181
	adap->tids.ftid_base = val[3];
	adap->tids.nftids = val[4] - val[3] + 1;
4182
	adap->sge.ingr_start = val[5];
4183

4184 4185 4186 4187 4188 4189 4190 4191 4192 4193 4194 4195 4196 4197 4198 4199 4200 4201
	/* query params related to active filter region */
	params[0] = FW_PARAM_PFVF(ACTIVE_FILTER_START);
	params[1] = FW_PARAM_PFVF(ACTIVE_FILTER_END);
	ret = t4_query_params(adap, adap->mbox, adap->fn, 0, 2, params, val);
	/* If Active filter size is set we enable establishing
	 * offload connection through firmware work request
	 */
	if ((val[0] != val[1]) && (ret >= 0)) {
		adap->flags |= FW_OFLD_CONN;
		adap->tids.aftid_base = val[0];
		adap->tids.aftid_end = val[1];
	}

	/*
	 * Get device capabilities so we can determine what resources we need
	 * to manage.
	 */
	memset(&caps_cmd, 0, sizeof(caps_cmd));
4202
	caps_cmd.op_to_write = htonl(FW_CMD_OP(FW_CAPS_CONFIG_CMD) |
4203
				     FW_CMD_REQUEST | FW_CMD_READ);
4204
	caps_cmd.cfvalid_to_len16 = htonl(FW_LEN16(caps_cmd));
4205 4206 4207 4208 4209
	ret = t4_wr_mbox(adap, adap->mbox, &caps_cmd, sizeof(caps_cmd),
			 &caps_cmd);
	if (ret < 0)
		goto bye;

4210
	if (caps_cmd.ofldcaps) {
4211 4212 4213 4214 4215 4216 4217
		/* query offload-related parameters */
		params[0] = FW_PARAM_DEV(NTID);
		params[1] = FW_PARAM_PFVF(SERVER_START);
		params[2] = FW_PARAM_PFVF(SERVER_END);
		params[3] = FW_PARAM_PFVF(TDDP_START);
		params[4] = FW_PARAM_PFVF(TDDP_END);
		params[5] = FW_PARAM_DEV(FLOWC_BUFFIFO_SZ);
4218 4219
		ret = t4_query_params(adap, adap->mbox, adap->fn, 0, 6,
				      params, val);
4220 4221 4222 4223 4224 4225
		if (ret < 0)
			goto bye;
		adap->tids.ntids = val[0];
		adap->tids.natids = min(adap->tids.ntids / 2, MAX_ATIDS);
		adap->tids.stid_base = val[1];
		adap->tids.nstids = val[2] - val[1] + 1;
4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242
		/*
		 * Setup server filter region. Divide the availble filter
		 * region into two parts. Regular filters get 1/3rd and server
		 * filters get 2/3rd part. This is only enabled if workarond
		 * path is enabled.
		 * 1. For regular filters.
		 * 2. Server filter: This are special filters which are used
		 * to redirect SYN packets to offload queue.
		 */
		if (adap->flags & FW_OFLD_CONN && !is_bypass(adap)) {
			adap->tids.sftid_base = adap->tids.ftid_base +
					DIV_ROUND_UP(adap->tids.nftids, 3);
			adap->tids.nsftids = adap->tids.nftids -
					 DIV_ROUND_UP(adap->tids.nftids, 3);
			adap->tids.nftids = adap->tids.sftid_base -
						adap->tids.ftid_base;
		}
4243 4244 4245
		adap->vres.ddp.start = val[3];
		adap->vres.ddp.size = val[4] - val[3] + 1;
		adap->params.ofldq_wr_cred = val[5];
4246

4247 4248
		adap->params.offload = 1;
	}
4249
	if (caps_cmd.rdmacaps) {
4250 4251 4252 4253 4254 4255
		params[0] = FW_PARAM_PFVF(STAG_START);
		params[1] = FW_PARAM_PFVF(STAG_END);
		params[2] = FW_PARAM_PFVF(RQ_START);
		params[3] = FW_PARAM_PFVF(RQ_END);
		params[4] = FW_PARAM_PFVF(PBL_START);
		params[5] = FW_PARAM_PFVF(PBL_END);
4256 4257
		ret = t4_query_params(adap, adap->mbox, adap->fn, 0, 6,
				      params, val);
4258 4259 4260 4261 4262 4263 4264 4265
		if (ret < 0)
			goto bye;
		adap->vres.stag.start = val[0];
		adap->vres.stag.size = val[1] - val[0] + 1;
		adap->vres.rq.start = val[2];
		adap->vres.rq.size = val[3] - val[2] + 1;
		adap->vres.pbl.start = val[4];
		adap->vres.pbl.size = val[5] - val[4] + 1;
4266 4267 4268 4269 4270

		params[0] = FW_PARAM_PFVF(SQRQ_START);
		params[1] = FW_PARAM_PFVF(SQRQ_END);
		params[2] = FW_PARAM_PFVF(CQ_START);
		params[3] = FW_PARAM_PFVF(CQ_END);
4271 4272
		params[4] = FW_PARAM_PFVF(OCQ_START);
		params[5] = FW_PARAM_PFVF(OCQ_END);
4273
		ret = t4_query_params(adap, 0, 0, 0, 6, params, val);
4274 4275 4276 4277 4278 4279
		if (ret < 0)
			goto bye;
		adap->vres.qp.start = val[0];
		adap->vres.qp.size = val[1] - val[0] + 1;
		adap->vres.cq.start = val[2];
		adap->vres.cq.size = val[3] - val[2] + 1;
4280 4281
		adap->vres.ocq.start = val[4];
		adap->vres.ocq.size = val[5] - val[4] + 1;
4282
	}
4283
	if (caps_cmd.iscsicaps) {
4284 4285
		params[0] = FW_PARAM_PFVF(ISCSI_START);
		params[1] = FW_PARAM_PFVF(ISCSI_END);
4286 4287
		ret = t4_query_params(adap, adap->mbox, adap->fn, 0, 2,
				      params, val);
4288 4289 4290 4291 4292 4293 4294 4295
		if (ret < 0)
			goto bye;
		adap->vres.iscsi.start = val[0];
		adap->vres.iscsi.size = val[1] - val[0] + 1;
	}
#undef FW_PARAM_PFVF
#undef FW_PARAM_DEV

4296 4297 4298
	/*
	 * These are finalized by FW initialization, load their values now.
	 */
4299 4300
	v = t4_read_reg(adap, TP_TIMER_RESOLUTION);
	adap->params.tp.tre = TIMERRESOLUTION_GET(v);
4301
	adap->params.tp.dack_re = DELAYEDACKRESOLUTION_GET(v);
4302 4303 4304
	t4_read_mtu_tbl(adap, adap->params.mtus, NULL);
	t4_load_mtus(adap, adap->params.mtus, adap->params.a_wnd,
		     adap->params.b_wnd);
4305

4306 4307 4308
	/* MODQ_REQ_MAP defaults to setting queues 0-3 to chan 0-3 */
	for (j = 0; j < NCHAN; j++)
		adap->params.tp.tx_modq[j] = j;
4309

4310
	adap->flags |= FW_OK;
4311 4312 4313
	return 0;

	/*
4314 4315 4316
	 * Something bad happened.  If a command timed out or failed with EIO
	 * FW does not operate within its spec or something catastrophic
	 * happened to HW/FW, stop issuing commands.
4317
	 */
4318 4319 4320
bye:
	if (ret != -ETIMEDOUT && ret != -EIO)
		t4_fw_bye(adap, adap->mbox);
4321 4322 4323
	return ret;
}

D
Dimitris Michailidis 已提交
4324 4325 4326 4327 4328 4329 4330 4331 4332 4333 4334 4335 4336 4337 4338 4339 4340 4341 4342 4343 4344 4345 4346 4347 4348 4349 4350 4351 4352 4353 4354 4355 4356 4357 4358 4359 4360 4361 4362 4363 4364 4365 4366 4367 4368 4369 4370 4371 4372 4373 4374 4375
/* EEH callbacks */

static pci_ers_result_t eeh_err_detected(struct pci_dev *pdev,
					 pci_channel_state_t state)
{
	int i;
	struct adapter *adap = pci_get_drvdata(pdev);

	if (!adap)
		goto out;

	rtnl_lock();
	adap->flags &= ~FW_OK;
	notify_ulds(adap, CXGB4_STATE_START_RECOVERY);
	for_each_port(adap, i) {
		struct net_device *dev = adap->port[i];

		netif_device_detach(dev);
		netif_carrier_off(dev);
	}
	if (adap->flags & FULL_INIT_DONE)
		cxgb_down(adap);
	rtnl_unlock();
	pci_disable_device(pdev);
out:	return state == pci_channel_io_perm_failure ?
		PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET;
}

static pci_ers_result_t eeh_slot_reset(struct pci_dev *pdev)
{
	int i, ret;
	struct fw_caps_config_cmd c;
	struct adapter *adap = pci_get_drvdata(pdev);

	if (!adap) {
		pci_restore_state(pdev);
		pci_save_state(pdev);
		return PCI_ERS_RESULT_RECOVERED;
	}

	if (pci_enable_device(pdev)) {
		dev_err(&pdev->dev, "cannot reenable PCI device after reset\n");
		return PCI_ERS_RESULT_DISCONNECT;
	}

	pci_set_master(pdev);
	pci_restore_state(pdev);
	pci_save_state(pdev);
	pci_cleanup_aer_uncorrect_error_status(pdev);

	if (t4_wait_dev_ready(adap) < 0)
		return PCI_ERS_RESULT_DISCONNECT;
4376
	if (t4_fw_hello(adap, adap->fn, adap->fn, MASTER_MUST, NULL))
D
Dimitris Michailidis 已提交
4377 4378 4379 4380 4381 4382 4383 4384
		return PCI_ERS_RESULT_DISCONNECT;
	adap->flags |= FW_OK;
	if (adap_init1(adap, &c))
		return PCI_ERS_RESULT_DISCONNECT;

	for_each_port(adap, i) {
		struct port_info *p = adap2pinfo(adap, i);

4385 4386
		ret = t4_alloc_vi(adap, adap->fn, p->tx_chan, adap->fn, 0, 1,
				  NULL, NULL);
D
Dimitris Michailidis 已提交
4387 4388 4389 4390 4391 4392 4393 4394
		if (ret < 0)
			return PCI_ERS_RESULT_DISCONNECT;
		p->viid = ret;
		p->xact_addr_filt = -1;
	}

	t4_load_mtus(adap, adap->params.mtus, adap->params.a_wnd,
		     adap->params.b_wnd);
4395
	setup_memwin(adap);
D
Dimitris Michailidis 已提交
4396 4397 4398 4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410 4411 4412 4413 4414 4415 4416 4417 4418 4419 4420 4421
	if (cxgb_up(adap))
		return PCI_ERS_RESULT_DISCONNECT;
	return PCI_ERS_RESULT_RECOVERED;
}

static void eeh_resume(struct pci_dev *pdev)
{
	int i;
	struct adapter *adap = pci_get_drvdata(pdev);

	if (!adap)
		return;

	rtnl_lock();
	for_each_port(adap, i) {
		struct net_device *dev = adap->port[i];

		if (netif_running(dev)) {
			link_start(dev);
			cxgb_set_rxmode(dev);
		}
		netif_device_attach(dev);
	}
	rtnl_unlock();
}

4422
static const struct pci_error_handlers cxgb4_eeh = {
D
Dimitris Michailidis 已提交
4423 4424 4425 4426 4427
	.error_detected = eeh_err_detected,
	.slot_reset     = eeh_slot_reset,
	.resume         = eeh_resume,
};

4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447
static inline bool is_10g_port(const struct link_config *lc)
{
	return (lc->supported & FW_PORT_CAP_SPEED_10G) != 0;
}

static inline void init_rspq(struct sge_rspq *q, u8 timer_idx, u8 pkt_cnt_idx,
			     unsigned int size, unsigned int iqe_size)
{
	q->intr_params = QINTR_TIMER_IDX(timer_idx) |
			 (pkt_cnt_idx < SGE_NCOUNTERS ? QINTR_CNT_EN : 0);
	q->pktcnt_idx = pkt_cnt_idx < SGE_NCOUNTERS ? pkt_cnt_idx : 0;
	q->iqe_len = iqe_size;
	q->size = size;
}

/*
 * Perform default configuration of DMA queues depending on the number and type
 * of ports we found and the number of available CPUs.  Most settings can be
 * modified by the admin prior to actual use.
 */
B
Bill Pemberton 已提交
4448
static void cfg_queues(struct adapter *adap)
4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461
{
	struct sge *s = &adap->sge;
	int i, q10g = 0, n10g = 0, qidx = 0;

	for_each_port(adap, i)
		n10g += is_10g_port(&adap2pinfo(adap, i)->link_cfg);

	/*
	 * We default to 1 queue per non-10G port and up to # of cores queues
	 * per 10G port.
	 */
	if (n10g)
		q10g = (MAX_ETH_QSETS - (adap->params.nports - n10g)) / n10g;
4462 4463
	if (q10g > netif_get_num_default_rss_queues())
		q10g = netif_get_num_default_rss_queues();
4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 4477 4478 4479 4480 4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496 4497 4498 4499 4500 4501 4502 4503 4504 4505 4506 4507 4508 4509 4510 4511 4512 4513 4514 4515 4516 4517 4518 4519 4520 4521 4522 4523 4524 4525 4526 4527 4528 4529 4530 4531

	for_each_port(adap, i) {
		struct port_info *pi = adap2pinfo(adap, i);

		pi->first_qset = qidx;
		pi->nqsets = is_10g_port(&pi->link_cfg) ? q10g : 1;
		qidx += pi->nqsets;
	}

	s->ethqsets = qidx;
	s->max_ethqsets = qidx;   /* MSI-X may lower it later */

	if (is_offload(adap)) {
		/*
		 * For offload we use 1 queue/channel if all ports are up to 1G,
		 * otherwise we divide all available queues amongst the channels
		 * capped by the number of available cores.
		 */
		if (n10g) {
			i = min_t(int, ARRAY_SIZE(s->ofldrxq),
				  num_online_cpus());
			s->ofldqsets = roundup(i, adap->params.nports);
		} else
			s->ofldqsets = adap->params.nports;
		/* For RDMA one Rx queue per channel suffices */
		s->rdmaqs = adap->params.nports;
	}

	for (i = 0; i < ARRAY_SIZE(s->ethrxq); i++) {
		struct sge_eth_rxq *r = &s->ethrxq[i];

		init_rspq(&r->rspq, 0, 0, 1024, 64);
		r->fl.size = 72;
	}

	for (i = 0; i < ARRAY_SIZE(s->ethtxq); i++)
		s->ethtxq[i].q.size = 1024;

	for (i = 0; i < ARRAY_SIZE(s->ctrlq); i++)
		s->ctrlq[i].q.size = 512;

	for (i = 0; i < ARRAY_SIZE(s->ofldtxq); i++)
		s->ofldtxq[i].q.size = 1024;

	for (i = 0; i < ARRAY_SIZE(s->ofldrxq); i++) {
		struct sge_ofld_rxq *r = &s->ofldrxq[i];

		init_rspq(&r->rspq, 0, 0, 1024, 64);
		r->rspq.uld = CXGB4_ULD_ISCSI;
		r->fl.size = 72;
	}

	for (i = 0; i < ARRAY_SIZE(s->rdmarxq); i++) {
		struct sge_ofld_rxq *r = &s->rdmarxq[i];

		init_rspq(&r->rspq, 0, 0, 511, 64);
		r->rspq.uld = CXGB4_ULD_RDMA;
		r->fl.size = 72;
	}

	init_rspq(&s->fw_evtq, 6, 0, 512, 64);
	init_rspq(&s->intrq, 6, 0, 2 * MAX_INGQ, 64);
}

/*
 * Reduce the number of Ethernet queues across all ports to at most n.
 * n provides at least one queue per port.
 */
B
Bill Pemberton 已提交
4532
static void reduce_ethqs(struct adapter *adap, int n)
4533 4534 4535 4536 4537 4538 4539 4540 4541 4542 4543 4544 4545 4546 4547 4548 4549 4550 4551 4552 4553 4554 4555 4556 4557 4558
{
	int i;
	struct port_info *pi;

	while (n < adap->sge.ethqsets)
		for_each_port(adap, i) {
			pi = adap2pinfo(adap, i);
			if (pi->nqsets > 1) {
				pi->nqsets--;
				adap->sge.ethqsets--;
				if (adap->sge.ethqsets <= n)
					break;
			}
		}

	n = 0;
	for_each_port(adap, i) {
		pi = adap2pinfo(adap, i);
		pi->first_qset = n;
		n += pi->nqsets;
	}
}

/* 2 MSI-X vectors needed for the FW queue and non-data interrupts */
#define EXTRA_VECS 2

B
Bill Pemberton 已提交
4559
static int enable_msix(struct adapter *adap)
4560 4561 4562 4563 4564 4565 4566 4567 4568 4569 4570 4571 4572 4573 4574 4575 4576 4577 4578 4579 4580 4581 4582 4583 4584 4585 4586 4587 4588 4589 4590 4591 4592 4593 4594 4595 4596 4597 4598 4599 4600 4601 4602 4603 4604 4605 4606 4607
{
	int ofld_need = 0;
	int i, err, want, need;
	struct sge *s = &adap->sge;
	unsigned int nchan = adap->params.nports;
	struct msix_entry entries[MAX_INGQ + 1];

	for (i = 0; i < ARRAY_SIZE(entries); ++i)
		entries[i].entry = i;

	want = s->max_ethqsets + EXTRA_VECS;
	if (is_offload(adap)) {
		want += s->rdmaqs + s->ofldqsets;
		/* need nchan for each possible ULD */
		ofld_need = 2 * nchan;
	}
	need = adap->params.nports + EXTRA_VECS + ofld_need;

	while ((err = pci_enable_msix(adap->pdev, entries, want)) >= need)
		want = err;

	if (!err) {
		/*
		 * Distribute available vectors to the various queue groups.
		 * Every group gets its minimum requirement and NIC gets top
		 * priority for leftovers.
		 */
		i = want - EXTRA_VECS - ofld_need;
		if (i < s->max_ethqsets) {
			s->max_ethqsets = i;
			if (i < s->ethqsets)
				reduce_ethqs(adap, i);
		}
		if (is_offload(adap)) {
			i = want - EXTRA_VECS - s->max_ethqsets;
			i -= ofld_need - nchan;
			s->ofldqsets = (i / nchan) * nchan;  /* round down */
		}
		for (i = 0; i < want; ++i)
			adap->msix_info[i].vec = entries[i].vector;
	} else if (err > 0)
		dev_info(adap->pdev_dev,
			 "only %d MSI-X vectors left, not using MSI-X\n", err);
	return err;
}

#undef EXTRA_VECS

B
Bill Pemberton 已提交
4608
static int init_rss(struct adapter *adap)
4609 4610 4611 4612 4613 4614 4615 4616 4617 4618
{
	unsigned int i, j;

	for_each_port(adap, i) {
		struct port_info *pi = adap2pinfo(adap, i);

		pi->rss = kcalloc(pi->rss_size, sizeof(u16), GFP_KERNEL);
		if (!pi->rss)
			return -ENOMEM;
		for (j = 0; j < pi->rss_size; j++)
4619
			pi->rss[j] = ethtool_rxfh_indir_default(j, pi->nqsets);
4620 4621 4622 4623
	}
	return 0;
}

B
Bill Pemberton 已提交
4624
static void print_port_info(const struct net_device *dev)
4625 4626
{
	static const char *base[] = {
4627
		"R XFI", "R XAUI", "T SGMII", "T XFI", "T XAUI", "KX4", "CX4",
4628
		"KX", "KR", "R SFP+", "KR/KX", "KR/KX/KX4"
4629 4630 4631
	};

	char buf[80];
4632
	char *bufp = buf;
4633
	const char *spd = "";
4634 4635
	const struct port_info *pi = netdev_priv(dev);
	const struct adapter *adap = pi->adapter;
4636 4637 4638 4639 4640

	if (adap->params.pci.speed == PCI_EXP_LNKSTA_CLS_2_5GB)
		spd = " 2.5 GT/s";
	else if (adap->params.pci.speed == PCI_EXP_LNKSTA_CLS_5_0GB)
		spd = " 5 GT/s";
4641

4642 4643 4644 4645 4646 4647 4648 4649 4650 4651 4652 4653 4654 4655 4656 4657 4658
	if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_100M)
		bufp += sprintf(bufp, "100/");
	if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_1G)
		bufp += sprintf(bufp, "1000/");
	if (pi->link_cfg.supported & FW_PORT_CAP_SPEED_10G)
		bufp += sprintf(bufp, "10G/");
	if (bufp != buf)
		--bufp;
	sprintf(bufp, "BASE-%s", base[pi->port_type]);

	netdev_info(dev, "Chelsio %s rev %d %s %sNIC PCIe x%d%s%s\n",
		    adap->params.vpd.id, adap->params.rev, buf,
		    is_offload(adap) ? "R" : "", adap->params.pci.width, spd,
		    (adap->flags & USING_MSIX) ? " MSI-X" :
		    (adap->flags & USING_MSI) ? " MSI" : "");
	netdev_info(dev, "S/N: %s, E/C: %s\n",
		    adap->params.vpd.sn, adap->params.vpd.ec);
4659 4660
}

B
Bill Pemberton 已提交
4661
static void enable_pcie_relaxed_ordering(struct pci_dev *dev)
4662
{
4663
	pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_RELAX_EN);
4664 4665
}

4666 4667 4668 4669 4670 4671 4672 4673 4674 4675 4676 4677 4678 4679 4680 4681
/*
 * Free the following resources:
 * - memory used for tables
 * - MSI/MSI-X
 * - net devices
 * - resources FW is holding for us
 */
static void free_some_resources(struct adapter *adapter)
{
	unsigned int i;

	t4_free_mem(adapter->l2t);
	t4_free_mem(adapter->tids.tid_tab);
	disable_msi(adapter);

	for_each_port(adapter, i)
4682 4683
		if (adapter->port[i]) {
			kfree(adap2pinfo(adapter, i)->rss);
4684
			free_netdev(adapter->port[i]);
4685
		}
4686
	if (adapter->flags & FW_OK)
4687
		t4_fw_bye(adapter, adapter->fn);
4688 4689
}

4690
#define TSO_FLAGS (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)
4691
#define VLAN_FEAT (NETIF_F_SG | NETIF_F_IP_CSUM | TSO_FLAGS | \
4692 4693
		   NETIF_F_IPV6_CSUM | NETIF_F_HIGHDMA)

4694
static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
4695 4696 4697
{
	int func, i, err;
	struct port_info *pi;
4698
	bool highdma = false;
4699 4700 4701 4702 4703 4704 4705 4706 4707 4708 4709
	struct adapter *adapter = NULL;

	printk_once(KERN_INFO "%s - version %s\n", DRV_DESC, DRV_VERSION);

	err = pci_request_regions(pdev, KBUILD_MODNAME);
	if (err) {
		/* Just info, some other driver may have claimed the device. */
		dev_info(&pdev->dev, "cannot obtain PCI resources\n");
		return err;
	}

4710
	/* We control everything through one PF */
4711
	func = PCI_FUNC(pdev->devfn);
4712
	if (func != ent->driver_data) {
D
Dimitris Michailidis 已提交
4713
		pci_save_state(pdev);        /* to restore SR-IOV later */
4714
		goto sriov;
D
Dimitris Michailidis 已提交
4715
	}
4716 4717 4718 4719 4720 4721 4722 4723

	err = pci_enable_device(pdev);
	if (err) {
		dev_err(&pdev->dev, "cannot enable PCI device\n");
		goto out_release_regions;
	}

	if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4724
		highdma = true;
4725 4726 4727 4728 4729 4730 4731 4732 4733 4734 4735 4736 4737 4738 4739
		err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
		if (err) {
			dev_err(&pdev->dev, "unable to obtain 64-bit DMA for "
				"coherent allocations\n");
			goto out_disable_device;
		}
	} else {
		err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
		if (err) {
			dev_err(&pdev->dev, "no usable DMA configuration\n");
			goto out_disable_device;
		}
	}

	pci_enable_pcie_error_reporting(pdev);
4740
	enable_pcie_relaxed_ordering(pdev);
4741 4742 4743 4744 4745 4746 4747 4748 4749 4750 4751 4752 4753 4754 4755 4756 4757 4758
	pci_set_master(pdev);
	pci_save_state(pdev);

	adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
	if (!adapter) {
		err = -ENOMEM;
		goto out_disable_device;
	}

	adapter->regs = pci_ioremap_bar(pdev, 0);
	if (!adapter->regs) {
		dev_err(&pdev->dev, "cannot map device registers\n");
		err = -ENOMEM;
		goto out_free_adapter;
	}

	adapter->pdev = pdev;
	adapter->pdev_dev = &pdev->dev;
4759
	adapter->mbox = func;
4760
	adapter->fn = func;
4761 4762 4763 4764 4765 4766 4767
	adapter->msg_enable = dflt_msg_enable;
	memset(adapter->chan_map, 0xff, sizeof(adapter->chan_map));

	spin_lock_init(&adapter->stats_lock);
	spin_lock_init(&adapter->tid_release_lock);

	INIT_WORK(&adapter->tid_release_task, process_tid_release_list);
4768 4769
	INIT_WORK(&adapter->db_full_task, process_db_full);
	INIT_WORK(&adapter->db_drop_task, process_db_drop);
4770 4771 4772 4773

	err = t4_prep_adapter(adapter);
	if (err)
		goto out_unmap_bar;
4774
	setup_memwin(adapter);
4775
	err = adap_init0(adapter);
4776
	setup_memwin_rdma(adapter);
4777 4778 4779 4780 4781 4782 4783 4784 4785 4786 4787 4788 4789 4790 4791 4792 4793 4794 4795 4796 4797 4798
	if (err)
		goto out_unmap_bar;

	for_each_port(adapter, i) {
		struct net_device *netdev;

		netdev = alloc_etherdev_mq(sizeof(struct port_info),
					   MAX_ETH_QSETS);
		if (!netdev) {
			err = -ENOMEM;
			goto out_free_dev;
		}

		SET_NETDEV_DEV(netdev, &pdev->dev);

		adapter->port[i] = netdev;
		pi = netdev_priv(netdev);
		pi->adapter = adapter;
		pi->xact_addr_filt = -1;
		pi->port_id = i;
		netdev->irq = pdev->irq;

4799 4800 4801 4802
		netdev->hw_features = NETIF_F_SG | TSO_FLAGS |
			NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
			NETIF_F_RXCSUM | NETIF_F_RXHASH |
			NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
4803 4804 4805
		if (highdma)
			netdev->hw_features |= NETIF_F_HIGHDMA;
		netdev->features |= netdev->hw_features;
4806 4807
		netdev->vlan_features = netdev->features & VLAN_FEAT;

4808 4809
		netdev->priv_flags |= IFF_UNICAST_FLT;

4810 4811 4812 4813 4814 4815 4816
		netdev->netdev_ops = &cxgb4_netdev_ops;
		SET_ETHTOOL_OPS(netdev, &cxgb_ethtool_ops);
	}

	pci_set_drvdata(pdev, adapter);

	if (adapter->flags & FW_OK) {
4817
		err = t4_port_init(adapter, func, func, 0);
4818 4819 4820 4821 4822 4823 4824 4825 4826 4827 4828 4829 4830 4831 4832 4833 4834 4835 4836 4837 4838 4839 4840
		if (err)
			goto out_free_dev;
	}

	/*
	 * Configure queues and allocate tables now, they can be needed as
	 * soon as the first register_netdev completes.
	 */
	cfg_queues(adapter);

	adapter->l2t = t4_init_l2t();
	if (!adapter->l2t) {
		/* We tolerate a lack of L2T, giving up some functionality */
		dev_warn(&pdev->dev, "could not allocate L2T, continuing\n");
		adapter->params.offload = 0;
	}

	if (is_offload(adapter) && tid_init(&adapter->tids) < 0) {
		dev_warn(&pdev->dev, "could not allocate TID table, "
			 "continuing\n");
		adapter->params.offload = 0;
	}

4841 4842 4843 4844 4845 4846
	/* See what interrupts we'll be using */
	if (msi > 1 && enable_msix(adapter) == 0)
		adapter->flags |= USING_MSIX;
	else if (msi > 0 && pci_enable_msi(pdev) == 0)
		adapter->flags |= USING_MSI;

4847 4848 4849 4850
	err = init_rss(adapter);
	if (err)
		goto out_free_dev;

4851 4852 4853 4854 4855 4856 4857
	/*
	 * The card is now ready to go.  If any errors occur during device
	 * registration we do not fail the whole card but rather proceed only
	 * with the ports we manage to register successfully.  However we must
	 * register at least one net device.
	 */
	for_each_port(adapter, i) {
4858 4859 4860 4861
		pi = adap2pinfo(adapter, i);
		netif_set_real_num_tx_queues(adapter->port[i], pi->nqsets);
		netif_set_real_num_rx_queues(adapter->port[i], pi->nqsets);

4862 4863
		err = register_netdev(adapter->port[i]);
		if (err)
4864 4865 4866
			break;
		adapter->chan_map[pi->tx_chan] = i;
		print_port_info(adapter->port[i]);
4867
	}
4868
	if (i == 0) {
4869 4870 4871
		dev_err(&pdev->dev, "could not register any net devices\n");
		goto out_free_dev;
	}
4872 4873 4874
	if (err) {
		dev_warn(&pdev->dev, "only %d net devices registered\n", i);
		err = 0;
4875
	}
4876 4877 4878 4879 4880 4881 4882

	if (cxgb4_debugfs_root) {
		adapter->debugfs_root = debugfs_create_dir(pci_name(pdev),
							   cxgb4_debugfs_root);
		setup_debugfs(adapter);
	}

D
Divy Le Ray 已提交
4883 4884 4885
	/* PCIe EEH recovery on powerpc platforms needs fundamental reset */
	pdev->needs_freset = 1;

4886 4887 4888 4889 4890 4891 4892 4893 4894 4895 4896 4897 4898 4899
	if (is_offload(adapter))
		attach_ulds(adapter);

sriov:
#ifdef CONFIG_PCI_IOV
	if (func < ARRAY_SIZE(num_vf) && num_vf[func] > 0)
		if (pci_enable_sriov(pdev, num_vf[func]) == 0)
			dev_info(&pdev->dev,
				 "instantiated %u virtual functions\n",
				 num_vf[func]);
#endif
	return 0;

 out_free_dev:
4900
	free_some_resources(adapter);
4901 4902 4903 4904 4905 4906 4907 4908 4909 4910 4911 4912 4913
 out_unmap_bar:
	iounmap(adapter->regs);
 out_free_adapter:
	kfree(adapter);
 out_disable_device:
	pci_disable_pcie_error_reporting(pdev);
	pci_disable_device(pdev);
 out_release_regions:
	pci_release_regions(pdev);
	pci_set_drvdata(pdev, NULL);
	return err;
}

B
Bill Pemberton 已提交
4914
static void remove_one(struct pci_dev *pdev)
4915 4916 4917
{
	struct adapter *adapter = pci_get_drvdata(pdev);

4918
#ifdef CONFIG_PCI_IOV
4919 4920
	pci_disable_sriov(pdev);

4921 4922
#endif

4923 4924 4925 4926 4927 4928 4929
	if (adapter) {
		int i;

		if (is_offload(adapter))
			detach_ulds(adapter);

		for_each_port(adapter, i)
D
Dimitris Michailidis 已提交
4930
			if (adapter->port[i]->reg_state == NETREG_REGISTERED)
4931 4932 4933 4934 4935
				unregister_netdev(adapter->port[i]);

		if (adapter->debugfs_root)
			debugfs_remove_recursive(adapter->debugfs_root);

V
Vipul Pandya 已提交
4936 4937 4938 4939 4940 4941 4942 4943 4944 4945
		/* If we allocated filters, free up state associated with any
		 * valid filters ...
		 */
		if (adapter->tids.ftid_tab) {
			struct filter_entry *f = &adapter->tids.ftid_tab[0];
			for (i = 0; i < adapter->tids.nftids; i++, f++)
				if (f->valid)
					clear_filter(adapter, f);
		}

4946 4947
		if (adapter->flags & FULL_INIT_DONE)
			cxgb_down(adapter);
4948

4949
		free_some_resources(adapter);
4950 4951 4952 4953 4954 4955
		iounmap(adapter->regs);
		kfree(adapter);
		pci_disable_pcie_error_reporting(pdev);
		pci_disable_device(pdev);
		pci_release_regions(pdev);
		pci_set_drvdata(pdev, NULL);
4956
	} else
4957 4958 4959 4960 4961 4962 4963
		pci_release_regions(pdev);
}

static struct pci_driver cxgb4_driver = {
	.name     = KBUILD_MODNAME,
	.id_table = cxgb4_pci_tbl,
	.probe    = init_one,
B
Bill Pemberton 已提交
4964
	.remove   = remove_one,
D
Dimitris Michailidis 已提交
4965
	.err_handler = &cxgb4_eeh,
4966 4967 4968 4969 4970 4971
};

static int __init cxgb4_init_module(void)
{
	int ret;

4972 4973 4974 4975
	workq = create_singlethread_workqueue("cxgb4");
	if (!workq)
		return -ENOMEM;

4976 4977 4978 4979 4980 4981 4982 4983 4984 4985 4986 4987 4988 4989 4990
	/* Debugfs support is optional, just warn if this fails */
	cxgb4_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
	if (!cxgb4_debugfs_root)
		pr_warning("could not create debugfs entry, continuing\n");

	ret = pci_register_driver(&cxgb4_driver);
	if (ret < 0)
		debugfs_remove(cxgb4_debugfs_root);
	return ret;
}

static void __exit cxgb4_cleanup_module(void)
{
	pci_unregister_driver(&cxgb4_driver);
	debugfs_remove(cxgb4_debugfs_root);  /* NULL ok */
4991 4992
	flush_workqueue(workq);
	destroy_workqueue(workq);
4993 4994 4995 4996
}

module_init(cxgb4_init_module);
module_exit(cxgb4_cleanup_module);