freebsd-nq/sys/dev/cxgbe/t4_iov.c
Navdeep Parhar de0a3472d8 cxgbe(4): Allow the PF driver to set a VF's MAC address.
The MAC address can be set with the optional mac-addr property in the VF
section of the iovctl.conf(5) used to instantiate the VFs.

MFC after:	2 weeks
Sponsored by:	Chelsio Communications
2020-11-09 00:08:35 +00:00

438 lines
11 KiB
C

/*-
* Copyright (c) 2015-2016 Chelsio Communications, Inc.
* All rights reserved.
* Written by: John Baldwin <jhb@FreeBSD.org>
*
* 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("$FreeBSD$");
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/systm.h>
#include <dev/pci/pcivar.h>
#ifdef PCI_IOV
#include <sys/nv.h>
#include <sys/iov_schema.h>
#include <dev/pci/pci_iov.h>
#endif
#include "common/common.h"
#include "common/t4_regs.h"
#include "t4_if.h"
struct t4iov_softc {
device_t sc_dev;
device_t sc_main;
bool sc_attached;
int pf;
int regs_rid;
struct resource *regs_res;
bus_space_handle_t bh;
bus_space_tag_t bt;
};
struct {
uint16_t device;
char *desc;
} t4iov_pciids[] = {
{0x4000, "Chelsio T440-dbg"},
{0x4001, "Chelsio T420-CR"},
{0x4002, "Chelsio T422-CR"},
{0x4003, "Chelsio T440-CR"},
{0x4004, "Chelsio T420-BCH"},
{0x4005, "Chelsio T440-BCH"},
{0x4006, "Chelsio T440-CH"},
{0x4007, "Chelsio T420-SO"},
{0x4008, "Chelsio T420-CX"},
{0x4009, "Chelsio T420-BT"},
{0x400a, "Chelsio T404-BT"},
{0x400e, "Chelsio T440-LP-CR"},
}, t5iov_pciids[] = {
{0x5000, "Chelsio T580-dbg"},
{0x5001, "Chelsio T520-CR"}, /* 2 x 10G */
{0x5002, "Chelsio T522-CR"}, /* 2 x 10G, 2 X 1G */
{0x5003, "Chelsio T540-CR"}, /* 4 x 10G */
{0x5007, "Chelsio T520-SO"}, /* 2 x 10G, nomem */
{0x5009, "Chelsio T520-BT"}, /* 2 x 10GBaseT */
{0x500a, "Chelsio T504-BT"}, /* 4 x 1G */
{0x500d, "Chelsio T580-CR"}, /* 2 x 40G */
{0x500e, "Chelsio T540-LP-CR"}, /* 4 x 10G */
{0x5010, "Chelsio T580-LP-CR"}, /* 2 x 40G */
{0x5011, "Chelsio T520-LL-CR"}, /* 2 x 10G */
{0x5012, "Chelsio T560-CR"}, /* 1 x 40G, 2 x 10G */
{0x5014, "Chelsio T580-LP-SO-CR"}, /* 2 x 40G, nomem */
{0x5015, "Chelsio T502-BT"}, /* 2 x 1G */
{0x5018, "Chelsio T540-BT"}, /* 4 x 10GBaseT */
{0x5019, "Chelsio T540-LP-BT"}, /* 4 x 10GBaseT */
{0x501a, "Chelsio T540-SO-BT"}, /* 4 x 10GBaseT, nomem */
{0x501b, "Chelsio T540-SO-CR"}, /* 4 x 10G, nomem */
}, t6iov_pciids[] = {
{0x6000, "Chelsio T6-DBG-25"}, /* 2 x 10/25G, debug */
{0x6001, "Chelsio T6225-CR"}, /* 2 x 10/25G */
{0x6002, "Chelsio T6225-SO-CR"}, /* 2 x 10/25G, nomem */
{0x6003, "Chelsio T6425-CR"}, /* 4 x 10/25G */
{0x6004, "Chelsio T6425-SO-CR"}, /* 4 x 10/25G, nomem */
{0x6005, "Chelsio T6225-OCP-SO"}, /* 2 x 10/25G, nomem */
{0x6006, "Chelsio T62100-OCP-SO"}, /* 2 x 40/50/100G, nomem */
{0x6007, "Chelsio T62100-LP-CR"}, /* 2 x 40/50/100G */
{0x6008, "Chelsio T62100-SO-CR"}, /* 2 x 40/50/100G, nomem */
{0x6009, "Chelsio T6210-BT"}, /* 2 x 10GBASE-T */
{0x600d, "Chelsio T62100-CR"}, /* 2 x 40/50/100G */
{0x6010, "Chelsio T6-DBG-100"}, /* 2 x 40/50/100G, debug */
{0x6011, "Chelsio T6225-LL-CR"}, /* 2 x 10/25G */
{0x6014, "Chelsio T61100-OCP-SO"}, /* 1 x 40/50/100G, nomem */
{0x6015, "Chelsio T6201-BT"}, /* 2 x 1000BASE-T */
/* Custom */
{0x6080, "Chelsio T6225 80"},
{0x6081, "Chelsio T62100 81"},
{0x6082, "Chelsio T6225-CR 82"},
{0x6083, "Chelsio T62100-CR 83"},
{0x6084, "Chelsio T64100-CR 84"},
{0x6085, "Chelsio T6240-SO 85"},
{0x6086, "Chelsio T6225-SO-CR 86"},
{0x6087, "Chelsio T6225-CR 87"},
};
static inline uint32_t
t4iov_read_reg(struct t4iov_softc *sc, uint32_t reg)
{
return bus_space_read_4(sc->bt, sc->bh, reg);
}
static int t4iov_attach_child(device_t dev);
static int
t4iov_probe(device_t dev)
{
uint16_t d;
size_t i;
if (pci_get_vendor(dev) != PCI_VENDOR_ID_CHELSIO)
return (ENXIO);
d = pci_get_device(dev);
for (i = 0; i < nitems(t4iov_pciids); i++) {
if (d == t4iov_pciids[i].device) {
device_set_desc(dev, t4iov_pciids[i].desc);
device_quiet(dev);
return (BUS_PROBE_DEFAULT);
}
}
return (ENXIO);
}
static int
t5iov_probe(device_t dev)
{
uint16_t d;
size_t i;
if (pci_get_vendor(dev) != PCI_VENDOR_ID_CHELSIO)
return (ENXIO);
d = pci_get_device(dev);
for (i = 0; i < nitems(t5iov_pciids); i++) {
if (d == t5iov_pciids[i].device) {
device_set_desc(dev, t5iov_pciids[i].desc);
device_quiet(dev);
return (BUS_PROBE_DEFAULT);
}
}
return (ENXIO);
}
static int
t6iov_probe(device_t dev)
{
uint16_t d;
size_t i;
if (pci_get_vendor(dev) != PCI_VENDOR_ID_CHELSIO)
return (ENXIO);
d = pci_get_device(dev);
for (i = 0; i < nitems(t6iov_pciids); i++) {
if (d == t6iov_pciids[i].device) {
device_set_desc(dev, t6iov_pciids[i].desc);
device_quiet(dev);
return (BUS_PROBE_DEFAULT);
}
}
return (ENXIO);
}
static int
t4iov_attach(device_t dev)
{
struct t4iov_softc *sc;
uint32_t pl_rev, whoami;
sc = device_get_softc(dev);
sc->sc_dev = dev;
sc->regs_rid = PCIR_BAR(0);
sc->regs_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&sc->regs_rid, RF_ACTIVE);
if (sc->regs_res == NULL) {
device_printf(dev, "cannot map registers.\n");
return (ENXIO);
}
sc->bt = rman_get_bustag(sc->regs_res);
sc->bh = rman_get_bushandle(sc->regs_res);
pl_rev = t4iov_read_reg(sc, A_PL_REV);
whoami = t4iov_read_reg(sc, A_PL_WHOAMI);
if (G_CHIPID(pl_rev) <= CHELSIO_T5)
sc->pf = G_SOURCEPF(whoami);
else
sc->pf = G_T6_SOURCEPF(whoami);
sc->sc_main = pci_find_dbsf(pci_get_domain(dev), pci_get_bus(dev),
pci_get_slot(dev), 4);
if (sc->sc_main == NULL)
return (ENXIO);
if (T4_IS_MAIN_READY(sc->sc_main) == 0)
return (t4iov_attach_child(dev));
return (0);
}
static int
t4iov_attach_child(device_t dev)
{
struct t4iov_softc *sc;
#ifdef PCI_IOV
nvlist_t *pf_schema, *vf_schema;
#endif
device_t pdev;
int error;
sc = device_get_softc(dev);
MPASS(!sc->sc_attached);
/*
* PF0-3 are associated with a specific port on the NIC (PF0
* with port 0, etc.). Ask the PF4 driver for the device for
* this function's associated port to determine if the port is
* present.
*/
error = T4_READ_PORT_DEVICE(sc->sc_main, pci_get_function(dev), &pdev);
if (error)
return (0);
#ifdef PCI_IOV
pf_schema = pci_iov_schema_alloc_node();
vf_schema = pci_iov_schema_alloc_node();
pci_iov_schema_add_unicast_mac(vf_schema, "mac-addr", 0, NULL);
error = pci_iov_attach_name(dev, pf_schema, vf_schema, "%s",
device_get_nameunit(pdev));
if (error) {
device_printf(dev, "Failed to initialize SR-IOV: %d\n", error);
return (0);
}
#endif
sc->sc_attached = true;
return (0);
}
static int
t4iov_detach_child(device_t dev)
{
struct t4iov_softc *sc;
#ifdef PCI_IOV
int error;
#endif
sc = device_get_softc(dev);
if (!sc->sc_attached)
return (0);
#ifdef PCI_IOV
error = pci_iov_detach(dev);
if (error != 0) {
device_printf(dev, "Failed to disable SR-IOV\n");
return (error);
}
#endif
sc->sc_attached = false;
return (0);
}
static int
t4iov_detach(device_t dev)
{
struct t4iov_softc *sc;
int error;
sc = device_get_softc(dev);
if (sc->sc_attached) {
error = t4iov_detach_child(dev);
if (error)
return (error);
}
if (sc->regs_res) {
bus_release_resource(dev, SYS_RES_MEMORY, sc->regs_rid,
sc->regs_res);
}
return (0);
}
#ifdef PCI_IOV
static int
t4iov_iov_init(device_t dev, uint16_t num_vfs, const struct nvlist *config)
{
/* XXX: The Linux driver sets up a vf_monitor task on T4 adapters. */
return (0);
}
static void
t4iov_iov_uninit(device_t dev)
{
}
static int
t4iov_add_vf(device_t dev, uint16_t vfnum, const struct nvlist *config)
{
const void *mac;
struct t4iov_softc *sc;
struct adapter *adap;
uint8_t ma[ETHER_ADDR_LEN];
size_t size;
int rc;
if (nvlist_exists_binary(config, "mac-addr")) {
mac = nvlist_get_binary(config, "mac-addr", &size);
bcopy(mac, ma, ETHER_ADDR_LEN);
sc = device_get_softc(dev);
MPASS(sc->sc_attached);
MPASS(sc->sc_main != NULL);
adap = device_get_softc(sc->sc_main);
if (begin_synchronized_op(adap, NULL, SLEEP_OK | INTR_OK,
"t4vfma") != 0)
return (ENXIO);
rc = -t4_set_vf_mac(adap, sc->pf, vfnum + 1, 1, ma);
end_synchronized_op(adap, 0);
if (rc != 0) {
device_printf(dev,
"Failed to set VF%d MAC address to "
"%02x:%02x:%02x:%02x:%02x:%02x, rc = %d\n", vfnum,
ma[0], ma[1], ma[2], ma[3], ma[4], ma[5], rc);
return (rc);
}
}
return (0);
}
#endif
static device_method_t t4iov_methods[] = {
DEVMETHOD(device_probe, t4iov_probe),
DEVMETHOD(device_attach, t4iov_attach),
DEVMETHOD(device_detach, t4iov_detach),
#ifdef PCI_IOV
DEVMETHOD(pci_iov_init, t4iov_iov_init),
DEVMETHOD(pci_iov_uninit, t4iov_iov_uninit),
DEVMETHOD(pci_iov_add_vf, t4iov_add_vf),
#endif
DEVMETHOD(t4_attach_child, t4iov_attach_child),
DEVMETHOD(t4_detach_child, t4iov_detach_child),
DEVMETHOD_END
};
static driver_t t4iov_driver = {
"t4iov",
t4iov_methods,
sizeof(struct t4iov_softc)
};
static device_method_t t5iov_methods[] = {
DEVMETHOD(device_probe, t5iov_probe),
DEVMETHOD(device_attach, t4iov_attach),
DEVMETHOD(device_detach, t4iov_detach),
#ifdef PCI_IOV
DEVMETHOD(pci_iov_init, t4iov_iov_init),
DEVMETHOD(pci_iov_uninit, t4iov_iov_uninit),
DEVMETHOD(pci_iov_add_vf, t4iov_add_vf),
#endif
DEVMETHOD(t4_attach_child, t4iov_attach_child),
DEVMETHOD(t4_detach_child, t4iov_detach_child),
DEVMETHOD_END
};
static driver_t t5iov_driver = {
"t5iov",
t5iov_methods,
sizeof(struct t4iov_softc)
};
static device_method_t t6iov_methods[] = {
DEVMETHOD(device_probe, t6iov_probe),
DEVMETHOD(device_attach, t4iov_attach),
DEVMETHOD(device_detach, t4iov_detach),
#ifdef PCI_IOV
DEVMETHOD(pci_iov_init, t4iov_iov_init),
DEVMETHOD(pci_iov_uninit, t4iov_iov_uninit),
DEVMETHOD(pci_iov_add_vf, t4iov_add_vf),
#endif
DEVMETHOD(t4_attach_child, t4iov_attach_child),
DEVMETHOD(t4_detach_child, t4iov_detach_child),
DEVMETHOD_END
};
static driver_t t6iov_driver = {
"t6iov",
t6iov_methods,
sizeof(struct t4iov_softc)
};
static devclass_t t4iov_devclass, t5iov_devclass, t6iov_devclass;
DRIVER_MODULE(t4iov, pci, t4iov_driver, t4iov_devclass, 0, 0);
MODULE_VERSION(t4iov, 1);
DRIVER_MODULE(t5iov, pci, t5iov_driver, t5iov_devclass, 0, 0);
MODULE_VERSION(t5iov, 1);
DRIVER_MODULE(t6iov, pci, t6iov_driver, t6iov_devclass, 0, 0);
MODULE_VERSION(t6iov, 1);