| Current Path : /sys/dev/sfxge/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/dev/sfxge/sfxge.c |
/*-
* Copyright (c) 2010-2011 Solarflare Communications, Inc.
* All rights reserved.
*
* This software was developed in part by Philip Paeps under contract for
* Solarflare Communications, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: release/9.1.0/sys/dev/sfxge/sfxge.c 229093 2011-12-31 14:12:12Z hselasky $");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/bus.h>
#include <sys/rman.h>
#include <sys/lock.h>
#include <sys/module.h>
#include <sys/mutex.h>
#include <sys/smp.h>
#include <sys/socket.h>
#include <sys/taskqueue.h>
#include <sys/sockio.h>
#include <sys/sysctl.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <net/ethernet.h>
#include <net/if.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include "common/efx.h"
#include "sfxge.h"
#include "sfxge_rx.h"
#define SFXGE_CAP (IFCAP_VLAN_MTU | \
IFCAP_HWCSUM | IFCAP_VLAN_HWCSUM | IFCAP_TSO | \
IFCAP_JUMBO_MTU | IFCAP_LRO | \
IFCAP_VLAN_HWTSO | IFCAP_LINKSTATE)
#define SFXGE_CAP_ENABLE SFXGE_CAP
#define SFXGE_CAP_FIXED (IFCAP_VLAN_MTU | IFCAP_HWCSUM | IFCAP_VLAN_HWCSUM | \
IFCAP_JUMBO_MTU | IFCAP_LINKSTATE)
MALLOC_DEFINE(M_SFXGE, "sfxge", "Solarflare 10GigE driver");
static void
sfxge_reset(void *arg, int npending);
static int
sfxge_start(struct sfxge_softc *sc)
{
int rc;
sx_assert(&sc->softc_lock, LA_XLOCKED);
if (sc->init_state == SFXGE_STARTED)
return 0;
if (sc->init_state != SFXGE_REGISTERED) {
rc = EINVAL;
goto fail;
}
if ((rc = efx_nic_init(sc->enp)) != 0)
goto fail;
/* Start processing interrupts. */
if ((rc = sfxge_intr_start(sc)) != 0)
goto fail2;
/* Start processing events. */
if ((rc = sfxge_ev_start(sc)) != 0)
goto fail3;
/* Start the receiver side. */
if ((rc = sfxge_rx_start(sc)) != 0)
goto fail4;
/* Start the transmitter side. */
if ((rc = sfxge_tx_start(sc)) != 0)
goto fail5;
/* Fire up the port. */
if ((rc = sfxge_port_start(sc)) != 0)
goto fail6;
sc->init_state = SFXGE_STARTED;
/* Tell the stack we're running. */
sc->ifnet->if_drv_flags |= IFF_DRV_RUNNING;
sc->ifnet->if_drv_flags &= ~IFF_DRV_OACTIVE;
return (0);
fail6:
sfxge_tx_stop(sc);
fail5:
sfxge_rx_stop(sc);
fail4:
sfxge_ev_stop(sc);
fail3:
sfxge_intr_stop(sc);
fail2:
efx_nic_fini(sc->enp);
fail:
device_printf(sc->dev, "sfxge_start: %d\n", rc);
return (rc);
}
static void
sfxge_if_init(void *arg)
{
struct sfxge_softc *sc;
sc = (struct sfxge_softc *)arg;
sx_xlock(&sc->softc_lock);
(void)sfxge_start(sc);
sx_xunlock(&sc->softc_lock);
}
static void
sfxge_stop(struct sfxge_softc *sc)
{
sx_assert(&sc->softc_lock, LA_XLOCKED);
if (sc->init_state != SFXGE_STARTED)
return;
sc->init_state = SFXGE_REGISTERED;
/* Stop the port. */
sfxge_port_stop(sc);
/* Stop the transmitter. */
sfxge_tx_stop(sc);
/* Stop the receiver. */
sfxge_rx_stop(sc);
/* Stop processing events. */
sfxge_ev_stop(sc);
/* Stop processing interrupts. */
sfxge_intr_stop(sc);
efx_nic_fini(sc->enp);
sc->ifnet->if_drv_flags &= ~IFF_DRV_RUNNING;
}
static int
sfxge_if_ioctl(struct ifnet *ifp, unsigned long command, caddr_t data)
{
struct sfxge_softc *sc;
struct ifreq *ifr;
int error;
ifr = (struct ifreq *)data;
sc = ifp->if_softc;
error = 0;
switch (command) {
case SIOCSIFFLAGS:
sx_xlock(&sc->softc_lock);
if (ifp->if_flags & IFF_UP) {
if (ifp->if_drv_flags & IFF_DRV_RUNNING) {
if ((ifp->if_flags ^ sc->if_flags) &
(IFF_PROMISC | IFF_ALLMULTI)) {
sfxge_mac_filter_set(sc);
}
} else
sfxge_start(sc);
} else
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
sfxge_stop(sc);
sc->if_flags = ifp->if_flags;
sx_xunlock(&sc->softc_lock);
break;
case SIOCSIFMTU:
if (ifr->ifr_mtu == ifp->if_mtu) {
/* Nothing to do */
error = 0;
} else if (ifr->ifr_mtu > SFXGE_MAX_MTU) {
error = EINVAL;
} else if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
ifp->if_mtu = ifr->ifr_mtu;
error = 0;
} else {
/* Restart required */
sx_xlock(&sc->softc_lock);
sfxge_stop(sc);
ifp->if_mtu = ifr->ifr_mtu;
error = sfxge_start(sc);
sx_xunlock(&sc->softc_lock);
if (error) {
ifp->if_flags &= ~IFF_UP;
ifp->if_drv_flags &= ~IFF_DRV_RUNNING;
if_down(ifp);
}
}
break;
case SIOCADDMULTI:
case SIOCDELMULTI:
if (ifp->if_drv_flags & IFF_DRV_RUNNING)
sfxge_mac_filter_set(sc);
break;
case SIOCSIFCAP:
sx_xlock(&sc->softc_lock);
/*
* The networking core already rejects attempts to
* enable capabilities we don't have. We still have
* to reject attempts to disable capabilities that we
* can't (yet) disable.
*/
if (~ifr->ifr_reqcap & SFXGE_CAP_FIXED) {
error = EINVAL;
sx_xunlock(&sc->softc_lock);
break;
}
ifp->if_capenable = ifr->ifr_reqcap;
if (ifp->if_capenable & IFCAP_TXCSUM)
ifp->if_hwassist |= (CSUM_IP | CSUM_TCP | CSUM_UDP);
else
ifp->if_hwassist &= ~(CSUM_IP | CSUM_TCP | CSUM_UDP);
if (ifp->if_capenable & IFCAP_TSO)
ifp->if_hwassist |= CSUM_TSO;
else
ifp->if_hwassist &= ~CSUM_TSO;
sx_xunlock(&sc->softc_lock);
break;
case SIOCSIFMEDIA:
case SIOCGIFMEDIA:
error = ifmedia_ioctl(ifp, ifr, &sc->media, command);
break;
default:
error = ether_ioctl(ifp, command, data);
}
return (error);
}
static void
sfxge_ifnet_fini(struct ifnet *ifp)
{
struct sfxge_softc *sc = ifp->if_softc;
sx_xlock(&sc->softc_lock);
sfxge_stop(sc);
sx_xunlock(&sc->softc_lock);
ifmedia_removeall(&sc->media);
ether_ifdetach(ifp);
if_free(ifp);
}
static int
sfxge_ifnet_init(struct ifnet *ifp, struct sfxge_softc *sc)
{
const efx_nic_cfg_t *encp = efx_nic_cfg_get(sc->enp);
device_t dev;
int rc;
dev = sc->dev;
sc->ifnet = ifp;
if_initname(ifp, device_get_name(dev), device_get_unit(dev));
ifp->if_init = sfxge_if_init;
ifp->if_softc = sc;
ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
ifp->if_ioctl = sfxge_if_ioctl;
ifp->if_capabilities = SFXGE_CAP;
ifp->if_capenable = SFXGE_CAP_ENABLE;
ifp->if_hwassist = CSUM_TCP | CSUM_UDP | CSUM_IP | CSUM_TSO;
ether_ifattach(ifp, encp->enc_mac_addr);
#ifdef SFXGE_HAVE_MQ
ifp->if_transmit = sfxge_if_transmit;
ifp->if_qflush = sfxge_if_qflush;
#else
ifp->if_start = sfxge_if_start;
IFQ_SET_MAXLEN(&ifp->if_snd, SFXGE_NDESCS - 1);
ifp->if_snd.ifq_drv_maxlen = SFXGE_NDESCS - 1;
IFQ_SET_READY(&ifp->if_snd);
mtx_init(&sc->tx_lock, "txq", NULL, MTX_DEF);
#endif
if ((rc = sfxge_port_ifmedia_init(sc)) != 0)
goto fail;
return 0;
fail:
ether_ifdetach(sc->ifnet);
return rc;
}
void
sfxge_sram_buf_tbl_alloc(struct sfxge_softc *sc, size_t n, uint32_t *idp)
{
KASSERT(sc->buffer_table_next + n <=
efx_nic_cfg_get(sc->enp)->enc_buftbl_limit,
("buffer table full"));
*idp = sc->buffer_table_next;
sc->buffer_table_next += n;
}
static int
sfxge_bar_init(struct sfxge_softc *sc)
{
efsys_bar_t *esbp = &sc->bar;
esbp->esb_rid = PCIR_BAR(EFX_MEM_BAR);
if ((esbp->esb_res = bus_alloc_resource_any(sc->dev, SYS_RES_MEMORY,
&esbp->esb_rid, RF_ACTIVE)) == NULL) {
device_printf(sc->dev, "Cannot allocate BAR region %d\n",
EFX_MEM_BAR);
return (ENXIO);
}
esbp->esb_tag = rman_get_bustag(esbp->esb_res);
esbp->esb_handle = rman_get_bushandle(esbp->esb_res);
mtx_init(&esbp->esb_lock, "sfxge_efsys_bar", NULL, MTX_DEF);
return (0);
}
static void
sfxge_bar_fini(struct sfxge_softc *sc)
{
efsys_bar_t *esbp = &sc->bar;
bus_release_resource(sc->dev, SYS_RES_MEMORY, esbp->esb_rid,
esbp->esb_res);
mtx_destroy(&esbp->esb_lock);
}
static int
sfxge_create(struct sfxge_softc *sc)
{
device_t dev;
efx_nic_t *enp;
int error;
dev = sc->dev;
sx_init(&sc->softc_lock, "sfxge_softc");
sc->stats_node = SYSCTL_ADD_NODE(
device_get_sysctl_ctx(dev),
SYSCTL_CHILDREN(device_get_sysctl_tree(dev)),
OID_AUTO, "stats", CTLFLAG_RD, NULL, "Statistics");
if (!sc->stats_node) {
error = ENOMEM;
goto fail;
}
TASK_INIT(&sc->task_reset, 0, sfxge_reset, sc);
(void) pci_enable_busmaster(dev);
/* Initialize DMA mappings. */
if ((error = sfxge_dma_init(sc)) != 0)
goto fail;
/* Map the device registers. */
if ((error = sfxge_bar_init(sc)) != 0)
goto fail;
error = efx_family(pci_get_vendor(dev), pci_get_device(dev),
&sc->family);
KASSERT(error == 0, ("Family should be filtered by sfxge_probe()"));
/* Create the common code nic object. */
mtx_init(&sc->enp_lock, "sfxge_nic", NULL, MTX_DEF);
if ((error = efx_nic_create(sc->family, (efsys_identifier_t *)sc,
&sc->bar, &sc->enp_lock, &enp)) != 0)
goto fail3;
sc->enp = enp;
/* Initialize MCDI to talk to the microcontroller. */
if ((error = sfxge_mcdi_init(sc)) != 0)
goto fail4;
/* Probe the NIC and build the configuration data area. */
if ((error = efx_nic_probe(enp)) != 0)
goto fail5;
/* Initialize the NVRAM. */
if ((error = efx_nvram_init(enp)) != 0)
goto fail6;
/* Initialize the VPD. */
if ((error = efx_vpd_init(enp)) != 0)
goto fail7;
/* Reset the NIC. */
if ((error = efx_nic_reset(enp)) != 0)
goto fail8;
/* Initialize buffer table allocation. */
sc->buffer_table_next = 0;
/* Set up interrupts. */
if ((error = sfxge_intr_init(sc)) != 0)
goto fail8;
/* Initialize event processing state. */
if ((error = sfxge_ev_init(sc)) != 0)
goto fail11;
/* Initialize receive state. */
if ((error = sfxge_rx_init(sc)) != 0)
goto fail12;
/* Initialize transmit state. */
if ((error = sfxge_tx_init(sc)) != 0)
goto fail13;
/* Initialize port state. */
if ((error = sfxge_port_init(sc)) != 0)
goto fail14;
sc->init_state = SFXGE_INITIALIZED;
return (0);
fail14:
sfxge_tx_fini(sc);
fail13:
sfxge_rx_fini(sc);
fail12:
sfxge_ev_fini(sc);
fail11:
sfxge_intr_fini(sc);
fail8:
efx_vpd_fini(enp);
fail7:
efx_nvram_fini(enp);
fail6:
efx_nic_unprobe(enp);
fail5:
sfxge_mcdi_fini(sc);
fail4:
sc->enp = NULL;
efx_nic_destroy(enp);
mtx_destroy(&sc->enp_lock);
fail3:
sfxge_bar_fini(sc);
(void) pci_disable_busmaster(sc->dev);
fail:
sc->dev = NULL;
sx_destroy(&sc->softc_lock);
return (error);
}
static void
sfxge_destroy(struct sfxge_softc *sc)
{
efx_nic_t *enp;
/* Clean up port state. */
sfxge_port_fini(sc);
/* Clean up transmit state. */
sfxge_tx_fini(sc);
/* Clean up receive state. */
sfxge_rx_fini(sc);
/* Clean up event processing state. */
sfxge_ev_fini(sc);
/* Clean up interrupts. */
sfxge_intr_fini(sc);
/* Tear down common code subsystems. */
efx_nic_reset(sc->enp);
efx_vpd_fini(sc->enp);
efx_nvram_fini(sc->enp);
efx_nic_unprobe(sc->enp);
/* Tear down MCDI. */
sfxge_mcdi_fini(sc);
/* Destroy common code context. */
enp = sc->enp;
sc->enp = NULL;
efx_nic_destroy(enp);
/* Free DMA memory. */
sfxge_dma_fini(sc);
/* Free mapped BARs. */
sfxge_bar_fini(sc);
(void) pci_disable_busmaster(sc->dev);
taskqueue_drain(taskqueue_thread, &sc->task_reset);
/* Destroy the softc lock. */
sx_destroy(&sc->softc_lock);
}
static int
sfxge_vpd_handler(SYSCTL_HANDLER_ARGS)
{
struct sfxge_softc *sc = arg1;
efx_vpd_value_t value;
int rc;
value.evv_tag = arg2 >> 16;
value.evv_keyword = arg2 & 0xffff;
if ((rc = efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value))
!= 0)
return rc;
return SYSCTL_OUT(req, value.evv_value, value.evv_length);
}
static void
sfxge_vpd_try_add(struct sfxge_softc *sc, struct sysctl_oid_list *list,
efx_vpd_tag_t tag, const char *keyword)
{
struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
efx_vpd_value_t value;
/* Check whether VPD tag/keyword is present */
value.evv_tag = tag;
value.evv_keyword = EFX_VPD_KEYWORD(keyword[0], keyword[1]);
if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) != 0)
return;
SYSCTL_ADD_PROC(
ctx, list, OID_AUTO, keyword, CTLTYPE_STRING|CTLFLAG_RD,
sc, tag << 16 | EFX_VPD_KEYWORD(keyword[0], keyword[1]),
sfxge_vpd_handler, "A", "");
}
static int
sfxge_vpd_init(struct sfxge_softc *sc)
{
struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->dev);
struct sysctl_oid *vpd_node;
struct sysctl_oid_list *vpd_list;
char keyword[3];
efx_vpd_value_t value;
int rc;
if ((rc = efx_vpd_size(sc->enp, &sc->vpd_size)) != 0)
goto fail;
sc->vpd_data = malloc(sc->vpd_size, M_SFXGE, M_WAITOK);
if ((rc = efx_vpd_read(sc->enp, sc->vpd_data, sc->vpd_size)) != 0)
goto fail2;
/* Copy ID (product name) into device description, and log it. */
value.evv_tag = EFX_VPD_ID;
if (efx_vpd_get(sc->enp, sc->vpd_data, sc->vpd_size, &value) == 0) {
value.evv_value[value.evv_length] = 0;
device_set_desc_copy(sc->dev, value.evv_value);
device_printf(sc->dev, "%s\n", value.evv_value);
}
vpd_node = SYSCTL_ADD_NODE(
ctx, SYSCTL_CHILDREN(device_get_sysctl_tree(sc->dev)),
OID_AUTO, "vpd", CTLFLAG_RD, NULL, "Vital Product Data");
vpd_list = SYSCTL_CHILDREN(vpd_node);
/* Add sysctls for all expected and any vendor-defined keywords. */
sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "PN");
sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "EC");
sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, "SN");
keyword[0] = 'V';
keyword[2] = 0;
for (keyword[1] = '0'; keyword[1] <= '9'; keyword[1]++)
sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
for (keyword[1] = 'A'; keyword[1] <= 'Z'; keyword[1]++)
sfxge_vpd_try_add(sc, vpd_list, EFX_VPD_RO, keyword);
return 0;
fail2:
free(sc->vpd_data, M_SFXGE);
fail:
return rc;
}
static void
sfxge_vpd_fini(struct sfxge_softc *sc)
{
free(sc->vpd_data, M_SFXGE);
}
static void
sfxge_reset(void *arg, int npending)
{
struct sfxge_softc *sc;
int rc;
(void)npending;
sc = (struct sfxge_softc *)arg;
sx_xlock(&sc->softc_lock);
if (sc->init_state != SFXGE_STARTED)
goto done;
sfxge_stop(sc);
efx_nic_reset(sc->enp);
if ((rc = sfxge_start(sc)) != 0)
device_printf(sc->dev,
"reset failed (%d); interface is now stopped\n",
rc);
done:
sx_xunlock(&sc->softc_lock);
}
void
sfxge_schedule_reset(struct sfxge_softc *sc)
{
taskqueue_enqueue(taskqueue_thread, &sc->task_reset);
}
static int
sfxge_attach(device_t dev)
{
struct sfxge_softc *sc;
struct ifnet *ifp;
int error;
sc = device_get_softc(dev);
sc->dev = dev;
/* Allocate ifnet. */
ifp = if_alloc(IFT_ETHER);
if (ifp == NULL) {
device_printf(dev, "Couldn't allocate ifnet\n");
error = ENOMEM;
goto fail;
}
sc->ifnet = ifp;
/* Initialize hardware. */
if ((error = sfxge_create(sc)) != 0)
goto fail2;
/* Create the ifnet for the port. */
if ((error = sfxge_ifnet_init(ifp, sc)) != 0)
goto fail3;
if ((error = sfxge_vpd_init(sc)) != 0)
goto fail4;
sc->init_state = SFXGE_REGISTERED;
return (0);
fail4:
sfxge_ifnet_fini(ifp);
fail3:
sfxge_destroy(sc);
fail2:
if_free(sc->ifnet);
fail:
return (error);
}
static int
sfxge_detach(device_t dev)
{
struct sfxge_softc *sc;
sc = device_get_softc(dev);
sfxge_vpd_fini(sc);
/* Destroy the ifnet. */
sfxge_ifnet_fini(sc->ifnet);
/* Tear down hardware. */
sfxge_destroy(sc);
return (0);
}
static int
sfxge_probe(device_t dev)
{
uint16_t pci_vendor_id;
uint16_t pci_device_id;
efx_family_t family;
int rc;
pci_vendor_id = pci_get_vendor(dev);
pci_device_id = pci_get_device(dev);
rc = efx_family(pci_vendor_id, pci_device_id, &family);
if (rc)
return ENXIO;
KASSERT(family == EFX_FAMILY_SIENA, ("impossible controller family"));
device_set_desc(dev, "Solarflare SFC9000 family");
return 0;
}
static device_method_t sfxge_methods[] = {
DEVMETHOD(device_probe, sfxge_probe),
DEVMETHOD(device_attach, sfxge_attach),
DEVMETHOD(device_detach, sfxge_detach),
DEVMETHOD_END
};
static devclass_t sfxge_devclass;
static driver_t sfxge_driver = {
"sfxge",
sfxge_methods,
sizeof(struct sfxge_softc)
};
DRIVER_MODULE(sfxge, pci, sfxge_driver, sfxge_devclass, 0, 0);