diff options
Diffstat (limited to 'drivers/net/cxgb4/cxgb4_main.c')
| -rw-r--r-- | drivers/net/cxgb4/cxgb4_main.c | 3806 |
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 c9957b7f17b5..000000000000 --- 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); |