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Diffstat (limited to 'drivers/net/cxgb4/cxgb4_main.c')
-rw-r--r--drivers/net/cxgb4/cxgb4_main.c3806
1 files changed, 0 insertions, 3806 deletions
diff --git a/drivers/net/cxgb4/cxgb4_main.c b/drivers/net/cxgb4/cxgb4_main.c
deleted file mode 100644
index c9957b7..0000000
--- a/drivers/net/cxgb4/cxgb4_main.c
+++ /dev/null
@@ -1,3806 +0,0 @@
-/*
- * This file is part of the Chelsio T4 Ethernet driver for Linux.
- *
- * Copyright (c) 2003-2010 Chelsio Communications, Inc. All rights reserved.
- *
- * This software is available to you under a choice of one of two
- * licenses. You may choose to be licensed under the terms of the GNU
- * General Public License (GPL) Version 2, available from the file
- * COPYING in the main directory of this source tree, or the
- * OpenIB.org BSD license below:
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above
- * copyright notice, this list of conditions and the following
- * disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials
- * provided with the distribution.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/bitmap.h>
-#include <linux/crc32.h>
-#include <linux/ctype.h>
-#include <linux/debugfs.h>
-#include <linux/err.h>
-#include <linux/etherdevice.h>
-#include <linux/firmware.h>
-#include <linux/if_vlan.h>
-#include <linux/init.h>
-#include <linux/log2.h>
-#include <linux/mdio.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/mutex.h>
-#include <linux/netdevice.h>
-#include <linux/pci.h>
-#include <linux/aer.h>
-#include <linux/rtnetlink.h>
-#include <linux/sched.h>
-#include <linux/seq_file.h>
-#include <linux/sockios.h>
-#include <linux/vmalloc.h>
-#include <linux/workqueue.h>
-#include <net/neighbour.h>
-#include <net/netevent.h>
-#include <asm/uaccess.h>
-
-#include "cxgb4.h"
-#include "t4_regs.h"
-#include "t4_msg.h"
-#include "t4fw_api.h"
-#include "l2t.h"
-
-#define DRV_VERSION "1.3.0-ko"
-#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
-
-#ifdef CONFIG_PCI_IOV
-/*
- * Virtual Function provisioning constants. We need two extra Ingress Queues
- * with Interrupt capability to serve as the VF's Firmware Event Queue and
- * Forwarded Interrupt Queue (when using MSI mode) -- neither will have Free
- * Lists associated with them). For each Ethernet/Control Egress Queue and
- * for each Free List, we need an Egress Context.
- */
-enum {
- VFRES_NPORTS = 1, /* # of "ports" per VF */
- VFRES_NQSETS = 2, /* # of "Queue Sets" per VF */
-
- VFRES_NVI = VFRES_NPORTS, /* # of Virtual Interfaces */
- VFRES_NETHCTRL = VFRES_NQSETS, /* # of EQs used for ETH or CTRL Qs */
- VFRES_NIQFLINT = VFRES_NQSETS+2,/* # of ingress Qs/w Free List(s)/intr */
- VFRES_NIQ = 0, /* # of non-fl/int ingress queues */
- VFRES_NEQ = VFRES_NQSETS*2, /* # of egress queues */
- VFRES_TC = 0, /* PCI-E traffic class */
- VFRES_NEXACTF = 16, /* # of exact MPS filters */
-
- VFRES_R_CAPS = FW_CMD_CAP_DMAQ|FW_CMD_CAP_VF|FW_CMD_CAP_PORT,
- VFRES_WX_CAPS = FW_CMD_CAP_DMAQ|FW_CMD_CAP_VF,
-};
-
-/*
- * Provide a Port Access Rights Mask for the specified PF/VF. This is very
- * static and likely not to be useful in the long run. We really need to
- * implement some form of persistent configuration which the firmware
- * controls.
- */
-static unsigned int pfvfres_pmask(struct adapter *adapter,
- unsigned int pf, unsigned int vf)
-{
- unsigned int portn, portvec;
-
- /*
- * Give PF's access to all of the ports.
- */
- if (vf == 0)
- return FW_PFVF_CMD_PMASK_MASK;
-
- /*
- * For VFs, we'll assign them access to the ports based purely on the
- * PF. We assign active ports in order, wrapping around if there are
- * fewer active ports than PFs: e.g. active port[pf % nports].
- * Unfortunately the adapter's port_info structs haven't been
- * initialized yet so we have to compute this.
- */
- if (adapter->params.nports == 0)
- return 0;
-
- portn = pf % adapter->params.nports;
- portvec = adapter->params.portvec;
- for (;;) {
- /*
- * Isolate the lowest set bit in the port vector. If we're at
- * the port number that we want, return that as the pmask.
- * otherwise mask that bit out of the port vector and
- * decrement our port number ...
- */
- unsigned int pmask = portvec ^ (portvec & (portvec-1));
- if (portn == 0)
- return pmask;
- portn--;
- portvec &= ~pmask;
- }
- /*NOTREACHED*/
-}
-#endif
-
-enum {
- MEMWIN0_APERTURE = 65536,
- MEMWIN0_BASE = 0x30000,
- MEMWIN1_APERTURE = 32768,
- MEMWIN1_BASE = 0x28000,
- MEMWIN2_APERTURE = 2048,
- MEMWIN2_BASE = 0x1b800,
-};
-
-enum {
- MAX_TXQ_ENTRIES = 16384,
- MAX_CTRL_TXQ_ENTRIES = 1024,
- MAX_RSPQ_ENTRIES = 16384,
- MAX_RX_BUFFERS = 16384,
- MIN_TXQ_ENTRIES = 32,
- MIN_CTRL_TXQ_ENTRIES = 32,
- MIN_RSPQ_ENTRIES = 128,
- MIN_FL_ENTRIES = 16
-};
-
-#define DFLT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | \
- NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP |\
- NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
-
-#define CH_DEVICE(devid, data) { PCI_VDEVICE(CHELSIO, devid), (data) }
-
-static DEFINE_PCI_DEVICE_TABLE(cxgb4_pci_tbl) = {
- CH_DEVICE(0xa000, 0), /* PE10K */
- CH_DEVICE(0x4001, -1),
- CH_DEVICE(0x4002, -1),
- CH_DEVICE(0x4003, -1),
- CH_DEVICE(0x4004, -1),
- CH_DEVICE(0x4005, -1),
- CH_DEVICE(0x4006, -1),
- CH_DEVICE(0x4007, -1),
- CH_DEVICE(0x4008, -1),
- CH_DEVICE(0x4009, -1),
- CH_DEVICE(0x400a, -1),
- CH_DEVICE(0x4401, 4),
- CH_DEVICE(0x4402, 4),
- CH_DEVICE(0x4403, 4),
- CH_DEVICE(0x4404, 4),
- CH_DEVICE(0x4405, 4),
- CH_DEVICE(0x4406, 4),
- CH_DEVICE(0x4407, 4),
- CH_DEVICE(0x4408, 4),
- CH_DEVICE(0x4409, 4),
- CH_DEVICE(0x440a, 4),
- { 0, }
-};
-
-#define FW_FNAME "cxgb4/t4fw.bin"
-
-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);
-
-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");
-
-static int vf_acls;
-
-#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
-
-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[] = {
- NULL, "LR", "SR", "ER", "passive DA", "active DA", "LRM"
- };
-
- 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");
- else if (pi->mod_type < ARRAY_SIZE(mod_str))
- 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);
- int mc_cnt = netdev_mc_count(dev);
- const struct port_info *pi = netdev_priv(dev);
- unsigned int mb = pi->adapter->fn;
-
- /* 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)) {
- ret = t4_alloc_mac_filt(pi->adapter, mb, pi->viid, free,
- naddr, addr, filt_idx, &uhash, sleep);
- if (ret < 0)
- return ret;
-
- free = false;
- naddr = 0;
- }
- }
-
- /* next set up the multicast addresses */
- netdev_for_each_mc_addr(ha, dev) {
- addr[naddr++] = ha->addr;
- if (--mc_cnt == 0 || naddr >= ARRAY_SIZE(addr)) {
- ret = t4_alloc_mac_filt(pi->adapter, mb, pi->viid, free,
- naddr, addr, filt_idx, &mhash, sleep);
- if (ret < 0)
- return ret;
-
- free = false;
- naddr = 0;
- }
- }
-
- return t4_set_addr_hash(pi->adapter, mb, pi->viid, uhash != 0,
- uhash | mhash, sleep);
-}
-
-/*
- * 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)
- ret = t4_set_rxmode(pi->adapter, pi->adapter->fn, pi->viid, mtu,
- (dev->flags & IFF_PROMISC) ? 1 : 0,
- (dev->flags & IFF_ALLMULTI) ? 1 : 0, 1, -1,
- sleep_ok);
- return ret;
-}
-
-/**
- * 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);
- unsigned int mb = pi->adapter->fn;
-
- /*
- * We do not set address filters and promiscuity here, the stack does
- * that step explicitly.
- */
- ret = t4_set_rxmode(pi->adapter, mb, pi->viid, dev->mtu, -1, -1, -1,
- !!(dev->features & NETIF_F_HW_VLAN_RX), true);
- if (ret == 0) {
- ret = t4_change_mac(pi->adapter, mb, pi->viid,
- pi->xact_addr_filt, dev->dev_addr, true,
- true);
- if (ret >= 0) {
- pi->xact_addr_filt = ret;
- ret = 0;
- }
- }
- if (ret == 0)
- ret = t4_link_start(pi->adapter, mb, pi->tx_chan,
- &pi->link_cfg);
- if (ret == 0)
- ret = t4_enable_vi(pi->adapter, mb, pi->viid, true, true);
- return ret;
-}
-
-/*
- * Response queue handler for the FW event queue.
- */
-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));
- struct sge_txq *txq;
-
- txq = q->adap->sge.egr_map[qid - q->adap->sge.egr_start];
- txq->restarts++;
- if ((u8 *)txq < (u8 *)q->adap->sge.ofldtxq) {
- 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);
- } 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)
-{
- int i, j, msi_idx = 2, n = sizeof(adap->msix_info[0].desc);
-
- /* non-data interrupts */
- snprintf(adap->msix_info[0].desc, n, "%s", adap->port[0]->name);
-
- /* FW events */
- snprintf(adap->msix_info[1].desc, n, "%s-FWeventq",
- adap->port[0]->name);
-
- /* Ethernet queues */
- for_each_port(adap, j) {
- struct net_device *d = adap->port[j];
- const struct port_info *pi = netdev_priv(d);
-
- for (i = 0; i < pi->nqsets; i++, msi_idx++)
- snprintf(adap->msix_info[msi_idx].desc, n, "%s-Rx%d",
- d->name, i);
- }
-
- /* offload queues */
- for_each_ofldrxq(&adap->sge, i)
- snprintf(adap->msix_info[msi_idx++].desc, n, "%s-ofld%d",
- adap->port[0]->name, i);
-
- for_each_rdmarxq(&adap->sge, i)
- snprintf(adap->msix_info[msi_idx++].desc, n, "%s-rdma%d",
- adap->port[0]->name, i);
-}
-
-static int request_msix_queue_irqs(struct adapter *adap)
-{
- struct sge *s = &adap->sge;
- int err, ethqidx, ofldqidx = 0, rdmaqidx = 0, msi = 2;
-
- 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) {
- err = request_irq(adap->msix_info[msi].vec, t4_sge_intr_msix, 0,
- adap->msix_info[msi].desc,
- &s->ethrxq[ethqidx].rspq);
- if (err)
- goto unwind;
- msi++;
- }
- for_each_ofldrxq(s, ofldqidx) {
- err = request_irq(adap->msix_info[msi].vec, t4_sge_intr_msix, 0,
- adap->msix_info[msi].desc,
- &s->ofldrxq[ofldqidx].rspq);
- if (err)
- goto unwind;
- msi++;
- }
- for_each_rdmarxq(s, rdmaqidx) {
- err = request_irq(adap->msix_info[msi].vec, t4_sge_intr_msix, 0,
- adap->msix_info[msi].desc,
- &s->rdmarxq[rdmaqidx].rspq);
- if (err)
- goto unwind;
- msi++;
- }
- return 0;
-
-unwind:
- while (--rdmaqidx >= 0)
- free_irq(adap->msix_info[--msi].vec,
- &s->rdmarxq[rdmaqidx].rspq);
- while (--ofldqidx >= 0)
- free_irq(adap->msix_info[--msi].vec,
- &s->ofldrxq[ofldqidx].rspq);
- while (--ethqidx >= 0)
- free_irq(adap->msix_info[--msi].vec, &s->ethrxq[ethqidx].rspq);
- free_irq(adap->msix_info[1].vec, &s->fw_evtq);
- return err;
-}
-
-static void free_msix_queue_irqs(struct adapter *adap)
-{
- int i, msi = 2;
- struct sge *s = &adap->sge;
-
- free_irq(adap->msix_info[1].vec, &s->fw_evtq);
- for_each_ethrxq(s, i)
- free_irq(adap->msix_info[msi++].vec, &s->ethrxq[i].rspq);
- for_each_ofldrxq(s, i)
- free_irq(adap->msix_info[msi++].vec, &s->ofldrxq[i].rspq);
- for_each_rdmarxq(s, i)
- free_irq(adap->msix_info[msi++].vec, &s->rdmarxq[i].rspq);
-}
-
-/**
- * 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;
-
- err = t4_config_rss_range(pi->adapter, pi->adapter->fn, pi->viid, 0,
- pi->rss_size, rss, pi->rss_size);
- kfree(rss);
- return err;
-}
-
-/**
- * setup_rss - configure RSS
- * @adap: the adapter
- *
- * Sets up RSS for each port.
- */
-static int setup_rss(struct adapter *adap)
-{
- int i, err;
-
- for_each_port(adap, i) {
- const struct port_info *pi = adap2pinfo(adap, i);
-
- err = write_rss(pi, pi->rss);
- if (err)
- return err;
- }
- return 0;
-}
-
-/*
- * 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;
-}
-
-/*
- * 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) {
- ret = -t4_load_fw(adap, fw->data, fw->size);
- if (!ret)
- dev_info(dev, "firmware upgraded to version %pI4 from "
- FW_FNAME "\n", &hdr->fw_ver);
- }
-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)
-{
- void *p = kzalloc(size, GFP_KERNEL);
-
- if (!p)
- p = vzalloc(size);
- return p;
-}
-
-/*
- * Free memory allocated through alloc_mem().
- */
-static void t4_free_mem(void *addr)
-{
- if (is_vmalloc_addr(addr))
- vfree(addr);
- else
- kfree(addr);
-}
-
-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 ",
- "GROpackets ",
- "GROmerged ",
-};
-
-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);
-
- strcpy(info->driver, KBUILD_MODNAME);
- strcpy(info->version, DRV_VERSION);
- strcpy(info->bus_info, pci_name(adapter->pdev));
-
- if (!adapter->params.fw_vers)
- strcpy(info->fw_version, "N/A");
- else
- 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;
- u64 gro_pkts;
- u64 gro_merged;
-};
-
-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;
- s->gro_pkts += rx->stats.lro_pkts;
- s->gro_merged += rx->stats.lro_merged;
- }
-}
-
-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
- * - bits 16..23: register dump version
- */
-static inline unsigned int mk_adap_vers(const struct adapter *ap)
-{
- return 4 | (ap->params.rev << 10) | (1 << 16);
-}
-
-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,
- 0x19040, 0x1906c,
- 0x19078, 0x19080,
- 0x1908c, 0x19124,
- 0x19150, 0x191b0,
- 0x191d0, 0x191e8,
- 0x19238, 0x1924c,
- 0x193f8, 0x19474,
- 0x19490, 0x194f8,
- 0x19800, 0x19f30,
- 0x1a000, 0x1a06c,
- 0x1a0b0, 0x1a120,
- 0x1a128, 0x1a138,
- 0x1a190, 0x1a1c4,
- 0x1a1fc, 0x1a1fc,
- 0x1e040, 0x1e04c,
- 0x1e284, 0x1e28c,
- 0x1e2c0, 0x1e2c0,
- 0x1e2e0, 0x1e2e0,
- 0x1e300, 0x1e384,
- 0x1e3c0, 0x1e3c8,
- 0x1e440, 0x1e44c,
- 0x1e684, 0x1e68c,
- 0x1e6c0, 0x1e6c0,
- 0x1e6e0, 0x1e6e0,
- 0x1e700, 0x1e784,
- 0x1e7c0, 0x1e7c8,
- 0x1e840, 0x1e84c,
- 0x1ea84, 0x1ea8c,
- 0x1eac0, 0x1eac0,
- 0x1eae0, 0x1eae0,
- 0x1eb00, 0x1eb84,
- 0x1ebc0, 0x1ebc8,
- 0x1ec40, 0x1ec4c,
- 0x1ee84, 0x1ee8c,
- 0x1eec0, 0x1eec0,
- 0x1eee0, 0x1eee0,
- 0x1ef00, 0x1ef84,
- 0x1efc0, 0x1efc8,
- 0x1f040, 0x1f04c,
- 0x1f284, 0x1f28c,
- 0x1f2c0, 0x1f2c0,
- 0x1f2e0, 0x1f2e0,
- 0x1f300, 0x1f384,
- 0x1f3c0, 0x1f3c8,
- 0x1f440, 0x1f44c,
- 0x1f684, 0x1f68c,
- 0x1f6c0, 0x1f6c0,
- 0x1f6e0, 0x1f6e0,
- 0x1f700, 0x1f784,
- 0x1f7c0, 0x1f7c8,
- 0x1f840, 0x1f84c,
- 0x1fa84, 0x1fa8c,
- 0x1fac0, 0x1fac0,
- 0x1fae0, 0x1fae0,
- 0x1fb00, 0x1fb84,
- 0x1fbc0, 0x1fbc8,
- 0x1fc40, 0x1fc4c,
- 0x1fe84, 0x1fe8c,
- 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;
- t4_restart_aneg(p->adapter, p->adapter->fn, p->tx_chan);
- return 0;
-}
-
-static int identify_port(struct net_device *dev,
- enum ethtool_phys_id_state state)
-{
- unsigned int val;
- struct adapter *adap = netdev2adap(dev);
-
- if (state == ETHTOOL_ID_ACTIVE)
- val = 0xffff;
- else if (state == ETHTOOL_ID_INACTIVE)
- val = 0;
- else
- return -EINVAL;
-
- return t4_identify_port(adap, adap->fn, netdev2pinfo(dev)->viid, val);
-}
-
-static unsigned int from_fw_linkcaps(unsigned int type, unsigned int caps)
-{
- unsigned int v = 0;
-
- if (type == FW_PORT_TYPE_BT_SGMII || type == FW_PORT_TYPE_BT_XFI ||
- type == FW_PORT_TYPE_BT_XAUI) {
- 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;
- else if (type == FW_PORT_TYPE_BP_AP)
- 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;
- else if (type == FW_PORT_TYPE_FIBER_XFI ||
- type == FW_PORT_TYPE_FIBER_XAUI || type == FW_PORT_TYPE_SFP)
- 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 ||
- p->port_type == FW_PORT_TYPE_BT_XFI ||
- p->port_type == FW_PORT_TYPE_BT_XAUI)
- cmd->port = PORT_TP;
- else if (p->port_type == FW_PORT_TYPE_FIBER_XFI ||
- p->port_type == FW_PORT_TYPE_FIBER_XAUI)
- cmd->port = PORT_FIBRE;
- 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
- 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);
- ethtool_cmd_speed_set(cmd,
- netif_carrier_ok(dev) ? p->link_cfg.speed : 0);
- 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;
- u32 speed = ethtool_cmd_speed(cmd);
-
- 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 &&
- (lc->supported & speed_to_caps(speed)))
- return 0;
- return -EINVAL;
- }
-
- if (cmd->autoneg == AUTONEG_DISABLE) {
- cap = speed_to_caps(speed);
-
- if (!(lc->supported & cap) || (speed == SPEED_1000) ||
- (speed == SPEED_10000))
- 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))
- return t4_link_start(p->adapter, p->adapter->fn, p->tx_chan,
- lc);
- 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))
- return t4_link_start(p->adapter, p->adapter->fn, p->tx_chan,
- lc);
- 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);
- err = t4_set_params(adap, adap->fn, adap->fn, 0, 1, &v,
- &new_idx);
- 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;
-}
-
-/**
- * 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.
- */
-static int eeprom_ptov(unsigned int phys_addr, unsigned int fn, unsigned int sz)
-{
- fn *= sz;
- if (phys_addr < 1024)
- return phys_addr + (31 << 10);
- if (phys_addr < 1024 + fn)
- return 31744 - fn + phys_addr - 1024;
- if (phys_addr < EEPROMSIZE)
- return phys_addr - 1024 - fn;
- 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)
-{
- int vaddr = eeprom_ptov(phys_addr, adap->fn, EEPROMPFSIZE);
-
- 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)
-{
- int vaddr = eeprom_ptov(phys_addr, adap->fn, EEPROMPFSIZE);
-
- 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;
-
- if (adapter->fn > 0) {
- u32 start = 1024 + adapter->fn * EEPROMPFSIZE;
-
- if (aligned_offset < start ||
- aligned_offset + aligned_len > start + EEPROMPFSIZE)
- return -EPERM;
- }
-
- 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;
-}
-
-static int cxgb_set_features(struct net_device *dev, u32 features)
-{
- const struct port_info *pi = netdev_priv(dev);
- u32 changed = dev->features ^ features;
- int err;
-
- if (!(changed & NETIF_F_HW_VLAN_RX))
- return 0;
-
- 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;
- return err;
-}
-
-static int get_rss_table(struct net_device *dev, struct ethtool_rxfh_indir *p)
-{
- const struct port_info *pi = netdev_priv(dev);
- unsigned int n = min_t(unsigned int, p->size, pi->rss_size);
-
- p->size = pi->rss_size;
- while (n--)
- p->ring_index[n] = pi->rss[n];
- return 0;
-}
-
-static int set_rss_table(struct net_device *dev,
- const struct ethtool_rxfh_indir *p)
-{
- unsigned int i;
- struct port_info *pi = netdev_priv(dev);
-
- if (p->size != pi->rss_size)
- return -EINVAL;
- for (i = 0; i < p->size; i++)
- if (p->ring_index[i] >= pi->nqsets)
- return -EINVAL;
- for (i = 0; i < p->size; i++)
- pi->rss[i] = p->ring_index[i];
- 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,
- void *rules)
-{
- const struct port_info *pi = netdev_priv(dev);
-
- switch (info->cmd) {
- 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;
- }
- case ETHTOOL_GRXRINGS:
- info->data = pi->nqsets;
- return 0;
- }
- return -EOPNOTSUPP;
-}
-
-static struct ethtool_ops cxgb_ethtool_ops = {
- .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,
- .set_phys_id = identify_port,
- .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,
- .get_rxnfc = get_rxnfc,
- .get_rxfh_indir = get_rss_table,
- .set_rxfh_indir = set_rss_table,
- .flash_device = set_flash,
-};
-
-/*
- * debugfs support
- */
-
-static int mem_open(struct inode *inode, struct file *file)
-{
- file->private_data = inode->i_private;
- return 0;
-}
-
-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,
- .open = mem_open,
- .read = mem_read,
- .llseek = default_llseek,
-};
-
-static void __devinit add_debugfs_mem(struct adapter *adap, const char *name,
- unsigned int idx, unsigned int size_mb)
-{
- 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;
-}
-
-static int __devinit setup_debugfs(struct adapter *adap)
-{
- 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;
-
- atid = p - t->atid_tab;
- 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)
-{
- union aopen_entry *p = &t->atid_tab[atid];
-
- 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.
- */
-static void cxgb4_queue_tid_release(struct tid_info *t, unsigned int chan,
- unsigned int tid)
-{
- 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;
- schedule_work(&adap->tid_release_task);
- }
- 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;
- unsigned int natids = t->natids;
-
- size = t->ntids * sizeof(*t->tid_tab) + natids * sizeof(*t->atid_tab) +
- t->nstids * sizeof(*t->stid_tab) +
- BITS_TO_LONGS(t->nstids) * sizeof(long);
- 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];
- 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);
- chan = rxq_to_chan(&adap->sge, queue);
- 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);
-
-/**
- * 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);
-
-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
-};
-
-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(
- t4_read_reg(adap, SGE_EGRESS_QUEUES_PER_PAGE_PF) >>
- (adap->fn * 4));
- lli.ucq_density = 1 << QUEUESPERPAGEPF0_GET(
- t4_read_reg(adap, SGE_INGRESS_QUEUES_PER_PAGE_PF) >>
- (adap->fn * 4));
- 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;
-
- 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;
- }
-
- if (adap->flags & FULL_INIT_DONE)
- ulds[uld].state_change(handle, CXGB4_STATE_UP);
-}
-
-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)
-{
- int err;
-
- err = setup_sge_queues(adap);
- if (err)
- goto out;
- err = setup_rss(adap);
- if (err)
- goto freeq;
-
- if (adap->flags & USING_MSIX) {
- name_msix_vecs(adap);
- 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,
- adap->port[0]->name, adap);
- if (err)
- goto irq_err;
- }
- enable_rx(adap);
- t4_sge_start(adap);
- t4_intr_enable(adap);
- adap->flags |= FULL_INIT_DONE;
- notify_ulds(adap, CXGB4_STATE_UP);
- out:
- return err;
- irq_err:
- dev_err(adap->pdev_dev, "request_irq failed, err %d\n", err);
- freeq:
- t4_free_sge_resources(adap);
- goto out;
-}
-
-static void cxgb_down(struct adapter *adapter)
-{
- t4_intr_disable(adapter);
- cancel_work_sync(&adapter->tid_release_task);
- adapter->tid_release_task_busy = false;
- adapter->tid_release_head = NULL;
-
- 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);
- t4_sge_stop(adapter);
- t4_free_sge_resources(adapter);
- adapter->flags &= ~FULL_INIT_DONE;
-}
-
-/*
- * 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;
-
- netif_carrier_off(dev);
-
- if (!(adapter->flags & FULL_INIT_DONE)) {
- err = cxgb_up(adapter);
- if (err < 0)
- return err;
- }
-
- err = link_start(dev);
- if (!err)
- netif_tx_start_all_queues(dev);
- return err;
-}
-
-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);
- return t4_enable_vi(adapter, adapter->fn, pi->viid, false, false);
-}
-
-static struct rtnl_link_stats64 *cxgb_get_stats(struct net_device *dev,
- struct rtnl_link_stats64 *ns)
-{
- 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)
-{
- unsigned int mbox;
- 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;
-
- mbox = pi->adapter->fn;
- if (cmd == SIOCGMIIREG)
- ret = t4_mdio_rd(pi->adapter, mbox, prtad, devad,
- data->reg_num, &data->val_out);
- else
- ret = t4_mdio_wr(pi->adapter, mbox, prtad, devad,
- 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;
- ret = t4_set_rxmode(pi->adapter, pi->adapter->fn, pi->viid, new_mtu, -1,
- -1, -1, -1, true);
- 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))
- return -EINVAL;
-
- ret = t4_change_mac(pi->adapter, pi->adapter->fn, pi->viid,
- pi->xact_addr_filt, addr->sa_data, true, true);
- 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,
- .ndo_get_stats64 = cxgb_get_stats,
- .ndo_set_rx_mode = cxgb_set_rxmode,
- .ndo_set_mac_address = cxgb_set_mac_addr,
- .ndo_set_features = cxgb_set_features,
- .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));
- 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));
- }
-}
-
-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);
- c->retval_len16 = htonl(FW_LEN16(*c));
- ret = t4_wr_mbox(adap, adap->fn, c, sizeof(*c), c);
- 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);
- ret = t4_wr_mbox(adap, adap->fn, c, sizeof(*c), NULL);
- if (ret < 0)
- return ret;
-
- ret = t4_config_glbl_rss(adap, adap->fn,
- FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL,
- FW_RSS_GLB_CONFIG_CMD_TNLMAPEN |
- FW_RSS_GLB_CONFIG_CMD_TNLALLLKP);
- if (ret < 0)
- return ret;
-
- 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);
- 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);
-
- /* get basic stuff going */
- return t4_early_init(adap, adap->fn);
-}
-
-/*
- * Max # of ATIDs. The absolute HW max is 16K but we keep it lower.
- */
-#define MAX_ATIDS 8192U
-
-/*
- * 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];
- struct fw_caps_config_cmd c;
-
- ret = t4_check_fw_version(adap);
- if (ret == -EINVAL || ret > 0) {
- if (upgrade_fw(adap) >= 0) /* recache FW version */
- ret = t4_check_fw_version(adap);
- }
- if (ret < 0)
- return ret;
-
- /* contact FW, request master */
- ret = t4_fw_hello(adap, adap->fn, adap->fn, MASTER_MUST, &state);
- if (ret < 0) {
- dev_err(adap->pdev_dev, "could not connect to FW, error %d\n",
- ret);
- return ret;
- }
-
- /* reset device */
- ret = t4_fw_reset(adap, adap->fn, PIORSTMODE | PIORST);
- if (ret < 0)
- goto bye;
-
- for (v = 0; v < SGE_NTIMERS - 1; v++)
- adap->sge.timer_val[v] = min(intr_holdoff[v], MAX_SGE_TIMERVAL);
- adap->sge.timer_val[SGE_NTIMERS - 1] = MAX_SGE_TIMERVAL;
- adap->sge.counter_val[0] = 1;
- for (v = 1; v < SGE_NCOUNTERS; v++)
- adap->sge.counter_val[v] = min(intr_cnt[v - 1],
- THRESHOLD_3_MASK);
-#define FW_PARAM_DEV(param) \
- (FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) | \
- FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_##param))
-
- params[0] = FW_PARAM_DEV(CCLK);
- ret = t4_query_params(adap, adap->fn, adap->fn, 0, 1, params, val);
- if (ret < 0)
- goto bye;
- adap->params.vpd.cclk = val[0];
-
- ret = adap_init1(adap, &c);
- if (ret < 0)
- goto bye;
-
-#define FW_PARAM_PFVF(param) \
- (FW_PARAMS_MNEM(FW_PARAMS_MNEM_PFVF) | \
- FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_PFVF_##param) | \
- FW_PARAMS_PARAM_Y(adap->fn))
-
- params[0] = FW_PARAM_DEV(PORTVEC);
- 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);
- params[5] = FW_PARAM_PFVF(IQFLINT_START);
- params[6] = FW_PARAM_PFVF(EQ_START);
- ret = t4_query_params(adap, adap->fn, adap->fn, 0, 7, params, val);
- if (ret < 0)
- goto bye;
- port_vec = val[0];
- adap->tids.ftid_base = val[3];
- adap->tids.nftids = val[4] - val[3] + 1;
- adap->sge.ingr_start = val[5];
- adap->sge.egr_start = val[6];
-
- if (c.ofldcaps) {
- /* 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);
- ret = t4_query_params(adap, adap->fn, adap->fn, 0, 6, params,
- val);
- 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;
- adap->vres.ddp.start = val[3];
- adap->vres.ddp.size = val[4] - val[3] + 1;
- adap->params.ofldq_wr_cred = val[5];
- adap->params.offload = 1;
- }
- if (c.rdmacaps) {
- 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);
- ret = t4_query_params(adap, adap->fn, adap->fn, 0, 6, params,
- val);
- 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;
-
- 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);
- params[4] = FW_PARAM_PFVF(OCQ_START);
- params[5] = FW_PARAM_PFVF(OCQ_END);
- ret = t4_query_params(adap, adap->fn, adap->fn, 0, 6, params,
- val);
- 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;
- adap->vres.ocq.start = val[4];
- adap->vres.ocq.size = val[5] - val[4] + 1;
- }
- if (c.iscsicaps) {
- params[0] = FW_PARAM_PFVF(ISCSI_START);
- params[1] = FW_PARAM_PFVF(ISCSI_END);
- ret = t4_query_params(adap, adap->fn, adap->fn, 0, 2, params,
- val);
- 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
-
- adap->params.nports = hweight32(port_vec);
- adap->params.portvec = port_vec;
- adap->flags |= FW_OK;
-
- /* These are finalized by FW initialization, load their values now */
- v = t4_read_reg(adap, TP_TIMER_RESOLUTION);
- adap->params.tp.tre = TIMERRESOLUTION_GET(v);
- t4_read_mtu_tbl(adap, adap->params.mtus, NULL);
- t4_load_mtus(adap, adap->params.mtus, adap->params.a_wnd,
- adap->params.b_wnd);
-
-#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(adap, adap->fn, pf, vf,
- VFRES_NEQ, VFRES_NETHCTRL,
- VFRES_NIQFLINT, VFRES_NIQ,
- VFRES_TC, VFRES_NVI,
- FW_PFVF_CMD_CMASK_MASK,
- pfvfres_pmask(adap, pf, vf),
- VFRES_NEXACTF,
- VFRES_R_CAPS, VFRES_WX_CAPS);
- if (ret < 0)
- dev_warn(adap->pdev_dev, "failed to "
- "provision pf/vf=%d/%d; "
- "err=%d\n", pf, vf, ret);
- }
- }
- }
-#endif
-
- setup_memwin(adap);
- return 0;
-
- /*
- * 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.
- */
-bye: if (ret != -ETIMEDOUT && ret != -EIO)
- t4_fw_bye(adap, adap->fn);
- return ret;
-}
-
-/* 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;
- if (t4_fw_hello(adap, adap->fn, adap->fn, MASTER_MUST, NULL))
- 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);
-
- ret = t4_alloc_vi(adap, adap->fn, p->tx_chan, adap->fn, 0, 1,
- NULL, NULL);
- 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);
- setup_memwin(adap);
- 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();
-}
-
-static struct pci_error_handlers cxgb4_eeh = {
- .error_detected = eeh_err_detected,
- .slot_reset = eeh_slot_reset,
- .resume = eeh_resume,
-};
-
-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.
- */
-static void __devinit cfg_queues(struct adapter *adap)
-{
- 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;
- if (q10g > num_online_cpus())
- q10g = num_online_cpus();
-
- 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.
- */
-static void __devinit reduce_ethqs(struct adapter *adap, int n)
-{
- 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
-
-static int __devinit enable_msix(struct adapter *adap)
-{
- 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
-
-static int __devinit init_rss(struct adapter *adap)
-{
- 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++)
- pi->rss[j] = j % pi->nqsets;
- }
- return 0;
-}
-
-static void __devinit print_port_info(const struct net_device *dev)
-{
- static const char *base[] = {
- "R XFI", "R XAUI", "T SGMII", "T XFI", "T XAUI", "KX4", "CX4",
- "KX", "KR", "R SFP+", "KR/KX", "KR/KX/KX4"
- };
-
- char buf[80];
- char *bufp = buf;
- const char *spd = "";
- const struct port_info *pi = netdev_priv(dev);
- const struct adapter *adap = pi->adapter;
-
- 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";
-
- 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);
-}
-
-static void __devinit enable_pcie_relaxed_ordering(struct pci_dev *dev)
-{
- u16 v;
- int pos;
-
- pos = pci_pcie_cap(dev);
- if (pos > 0) {
- pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &v);
- v |= PCI_EXP_DEVCTL_RELAX_EN;
- pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, v);
- }
-}
-
-/*
- * 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)
- if (adapter->port[i]) {
- kfree(adap2pinfo(adapter, i)->rss);
- free_netdev(adapter->port[i]);
- }
- if (adapter->flags & FW_OK)
- t4_fw_bye(adapter, adapter->fn);
-}
-
-#define TSO_FLAGS (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)
-#define VLAN_FEAT (NETIF_F_SG | NETIF_F_IP_CSUM | TSO_FLAGS | \
- NETIF_F_IPV6_CSUM | NETIF_F_HIGHDMA)
-
-static int __devinit init_one(struct pci_dev *pdev,
- const struct pci_device_id *ent)
-{
- int func, i, err;
- struct port_info *pi;
- unsigned int highdma = 0;
- 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;
- }
-
- /* We control everything through one PF */
- func = PCI_FUNC(pdev->devfn);
- if (func != ent->driver_data) {
- pci_save_state(pdev); /* to restore SR-IOV later */
- goto sriov;
- }
-
- 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))) {
- highdma = NETIF_F_HIGHDMA;
- 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);
- enable_pcie_relaxed_ordering(pdev);
- 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;
- adapter->fn = func;
- 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);
-
- err = t4_prep_adapter(adapter);
- if (err)
- goto out_unmap_bar;
- err = adap_init0(adapter);
- 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;
-
- 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;
- netdev->features |= netdev->hw_features | highdma;
- netdev->vlan_features = netdev->features & VLAN_FEAT;
-
- netdev->netdev_ops = &cxgb4_netdev_ops;
- SET_ETHTOOL_OPS(netdev, &cxgb_ethtool_ops);
- }
-
- pci_set_drvdata(pdev, adapter);
-
- if (adapter->flags & FW_OK) {
- err = t4_port_init(adapter, func, func, 0);
- 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;
- }
-
- /* 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;
-
- err = init_rss(adapter);
- if (err)
- goto out_free_dev;
-
- /*
- * 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) {
- 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);
-
- err = register_netdev(adapter->port[i]);
- if (err)
- break;
- adapter->chan_map[pi->tx_chan] = i;
- print_port_info(adapter->port[i]);
- }
- if (i == 0) {
- dev_err(&pdev->dev, "could not register any net devices\n");
- goto out_free_dev;
- }
- if (err) {
- dev_warn(&pdev->dev, "only %d net devices registered\n", i);
- err = 0;
- }
-
- if (cxgb4_debugfs_root) {
- adapter->debugfs_root = debugfs_create_dir(pci_name(pdev),
- cxgb4_debugfs_root);
- setup_debugfs(adapter);
- }
-
- 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:
- free_some_resources(adapter);
- 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;
-}
-
-static void __devexit remove_one(struct pci_dev *pdev)
-{
- struct adapter *adapter = pci_get_drvdata(pdev);
-
- pci_disable_sriov(pdev);
-
- if (adapter) {
- int i;
-
- if (is_offload(adapter))
- detach_ulds(adapter);
-
- for_each_port(adapter, i)
- if (adapter->port[i]->reg_state == NETREG_REGISTERED)
- unregister_netdev(adapter->port[i]);
-
- if (adapter->debugfs_root)
- debugfs_remove_recursive(adapter->debugfs_root);
-
- if (adapter->flags & FULL_INIT_DONE)
- cxgb_down(adapter);
-
- free_some_resources(adapter);
- iounmap(adapter->regs);
- kfree(adapter);
- pci_disable_pcie_error_reporting(pdev);
- pci_disable_device(pdev);
- pci_release_regions(pdev);
- pci_set_drvdata(pdev, NULL);
- } else
- pci_release_regions(pdev);
-}
-
-static struct pci_driver cxgb4_driver = {
- .name = KBUILD_MODNAME,
- .id_table = cxgb4_pci_tbl,
- .probe = init_one,
- .remove = __devexit_p(remove_one),
- .err_handler = &cxgb4_eeh,
-};
-
-static int __init cxgb4_init_module(void)
-{
- int ret;
-
- /* 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 */
-}
-
-module_init(cxgb4_init_module);
-module_exit(cxgb4_cleanup_module);