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freebsd-nq/sys/dev/cxgbe/t4_vf.c
Navdeep Parhar fae028dd97 cxgbe(4): Break up t4_read_chip_settings. 
Read the PF-only hardware settings directly in get_params__post_init.
Split the rest into two routines used by both the PF and VF drivers: one
that reads the SGE rx buffer configuration and another that verifies
miscellaneous hardware configuration.

MFC after:	1 week
Sponsored by:	Chelsio Communications
2021-02-18 01:22:42 -08:00

1000 lines
26 KiB
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/*-
* Copyright (c) 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 "opt_inet.h"
#include "opt_inet6.h"
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/priv.h>
#include <dev/pci/pcivar.h>
#if defined(__i386__) || defined(__amd64__)
#include <vm/vm.h>
#include <vm/pmap.h>
#endif
#include "common/common.h"
#include "common/t4_regs.h"
#include "t4_ioctl.h"
#include "t4_mp_ring.h"
/*
* Some notes:
*
* The Virtual Interfaces are connected to an internal switch on the chip
* which allows VIs attached to the same port to talk to each other even when
* the port link is down. As a result, we might want to always report a
* VF's link as being "up".
*
* XXX: Add a TUNABLE and possible per-device sysctl for this?
*/
struct intrs_and_queues {
uint16_t intr_type; /* MSI, or MSI-X */
uint16_t nirq; /* Total # of vectors */
uint16_t ntxq; /* # of NIC txq's for each port */
uint16_t nrxq; /* # of NIC rxq's for each port */
};
struct {
uint16_t device;
char *desc;
} t4vf_pciids[] = {
{0x4800, "Chelsio T440-dbg VF"},
{0x4801, "Chelsio T420-CR VF"},
{0x4802, "Chelsio T422-CR VF"},
{0x4803, "Chelsio T440-CR VF"},
{0x4804, "Chelsio T420-BCH VF"},
{0x4805, "Chelsio T440-BCH VF"},
{0x4806, "Chelsio T440-CH VF"},
{0x4807, "Chelsio T420-SO VF"},
{0x4808, "Chelsio T420-CX VF"},
{0x4809, "Chelsio T420-BT VF"},
{0x480a, "Chelsio T404-BT VF"},
{0x480e, "Chelsio T440-LP-CR VF"},
}, t5vf_pciids[] = {
{0x5800, "Chelsio T580-dbg VF"},
{0x5801, "Chelsio T520-CR VF"}, /* 2 x 10G */
{0x5802, "Chelsio T522-CR VF"}, /* 2 x 10G, 2 X 1G */
{0x5803, "Chelsio T540-CR VF"}, /* 4 x 10G */
{0x5807, "Chelsio T520-SO VF"}, /* 2 x 10G, nomem */
{0x5809, "Chelsio T520-BT VF"}, /* 2 x 10GBaseT */
{0x580a, "Chelsio T504-BT VF"}, /* 4 x 1G */
{0x580d, "Chelsio T580-CR VF"}, /* 2 x 40G */
{0x580e, "Chelsio T540-LP-CR VF"}, /* 4 x 10G */
{0x5810, "Chelsio T580-LP-CR VF"}, /* 2 x 40G */
{0x5811, "Chelsio T520-LL-CR VF"}, /* 2 x 10G */
{0x5812, "Chelsio T560-CR VF"}, /* 1 x 40G, 2 x 10G */
{0x5814, "Chelsio T580-LP-SO-CR VF"}, /* 2 x 40G, nomem */
{0x5815, "Chelsio T502-BT VF"}, /* 2 x 1G */
{0x5818, "Chelsio T540-BT VF"}, /* 4 x 10GBaseT */
{0x5819, "Chelsio T540-LP-BT VF"}, /* 4 x 10GBaseT */
{0x581a, "Chelsio T540-SO-BT VF"}, /* 4 x 10GBaseT, nomem */
{0x581b, "Chelsio T540-SO-CR VF"}, /* 4 x 10G, nomem */
}, t6vf_pciids[] = {
{0x6800, "Chelsio T6-DBG-25 VF"}, /* 2 x 10/25G, debug */
{0x6801, "Chelsio T6225-CR VF"}, /* 2 x 10/25G */
{0x6802, "Chelsio T6225-SO-CR VF"}, /* 2 x 10/25G, nomem */
{0x6803, "Chelsio T6425-CR VF"}, /* 4 x 10/25G */
{0x6804, "Chelsio T6425-SO-CR VF"}, /* 4 x 10/25G, nomem */
{0x6805, "Chelsio T6225-OCP-SO VF"}, /* 2 x 10/25G, nomem */
{0x6806, "Chelsio T62100-OCP-SO VF"}, /* 2 x 40/50/100G, nomem */
{0x6807, "Chelsio T62100-LP-CR VF"}, /* 2 x 40/50/100G */
{0x6808, "Chelsio T62100-SO-CR VF"}, /* 2 x 40/50/100G, nomem */
{0x6809, "Chelsio T6210-BT VF"}, /* 2 x 10GBASE-T */
{0x680d, "Chelsio T62100-CR VF"}, /* 2 x 40/50/100G */
{0x6810, "Chelsio T6-DBG-100 VF"}, /* 2 x 40/50/100G, debug */
{0x6811, "Chelsio T6225-LL-CR VF"}, /* 2 x 10/25G */
{0x6814, "Chelsio T61100-OCP-SO VF"}, /* 1 x 40/50/100G, nomem */
{0x6815, "Chelsio T6201-BT VF"}, /* 2 x 1000BASE-T */
/* Custom */
{0x6880, "Chelsio T6225 80 VF"},
{0x6881, "Chelsio T62100 81 VF"},
{0x6882, "Chelsio T6225-CR 82 VF"},
{0x6883, "Chelsio T62100-CR 83 VF"},
{0x6884, "Chelsio T64100-CR 84 VF"},
{0x6885, "Chelsio T6240-SO 85 VF"},
{0x6886, "Chelsio T6225-SO-CR 86 VF"},
{0x6887, "Chelsio T6225-CR 87 VF"},
};
static d_ioctl_t t4vf_ioctl;
static struct cdevsw t4vf_cdevsw = {
.d_version = D_VERSION,
.d_ioctl = t4vf_ioctl,
.d_name = "t4vf",
};
static int
t4vf_probe(device_t dev)
{
uint16_t d;
size_t i;
d = pci_get_device(dev);
for (i = 0; i < nitems(t4vf_pciids); i++) {
if (d == t4vf_pciids[i].device) {
device_set_desc(dev, t4vf_pciids[i].desc);
return (BUS_PROBE_DEFAULT);
}
}
return (ENXIO);
}
static int
t5vf_probe(device_t dev)
{
uint16_t d;
size_t i;
d = pci_get_device(dev);
for (i = 0; i < nitems(t5vf_pciids); i++) {
if (d == t5vf_pciids[i].device) {
device_set_desc(dev, t5vf_pciids[i].desc);
return (BUS_PROBE_DEFAULT);
}
}
return (ENXIO);
}
static int
t6vf_probe(device_t dev)
{
uint16_t d;
size_t i;
d = pci_get_device(dev);
for (i = 0; i < nitems(t6vf_pciids); i++) {
if (d == t6vf_pciids[i].device) {
device_set_desc(dev, t6vf_pciids[i].desc);
return (BUS_PROBE_DEFAULT);
}
}
return (ENXIO);
}
#define FW_PARAM_DEV(param) \
(V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_DEV) | \
V_FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_DEV_##param))
#define FW_PARAM_PFVF(param) \
(V_FW_PARAMS_MNEM(FW_PARAMS_MNEM_PFVF) | \
V_FW_PARAMS_PARAM_X(FW_PARAMS_PARAM_PFVF_##param))
static int
get_params__pre_init(struct adapter *sc)
{
int rc;
uint32_t param[3], val[3];
param[0] = FW_PARAM_DEV(FWREV);
param[1] = FW_PARAM_DEV(TPREV);
param[2] = FW_PARAM_DEV(CCLK);
rc = -t4vf_query_params(sc, nitems(param), param, val);
if (rc != 0) {
device_printf(sc->dev,
"failed to query parameters (pre_init): %d.\n", rc);
return (rc);
}
sc->params.fw_vers = val[0];
sc->params.tp_vers = val[1];
sc->params.vpd.cclk = val[2];
snprintf(sc->fw_version, sizeof(sc->fw_version), "%u.%u.%u.%u",
G_FW_HDR_FW_VER_MAJOR(sc->params.fw_vers),
G_FW_HDR_FW_VER_MINOR(sc->params.fw_vers),
G_FW_HDR_FW_VER_MICRO(sc->params.fw_vers),
G_FW_HDR_FW_VER_BUILD(sc->params.fw_vers));
snprintf(sc->tp_version, sizeof(sc->tp_version), "%u.%u.%u.%u",
G_FW_HDR_FW_VER_MAJOR(sc->params.tp_vers),
G_FW_HDR_FW_VER_MINOR(sc->params.tp_vers),
G_FW_HDR_FW_VER_MICRO(sc->params.tp_vers),
G_FW_HDR_FW_VER_BUILD(sc->params.tp_vers));
return (0);
}
static int
get_params__post_init(struct adapter *sc)
{
int rc;
uint32_t param, val;
rc = -t4vf_get_sge_params(sc);
if (rc != 0) {
device_printf(sc->dev,
"unable to retrieve adapter SGE parameters: %d\n", rc);
return (rc);
}
rc = -t4vf_get_rss_glb_config(sc);
if (rc != 0) {
device_printf(sc->dev,
"unable to retrieve adapter RSS parameters: %d\n", rc);
return (rc);
}
if (sc->params.rss.mode != FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL) {
device_printf(sc->dev,
"unable to operate with global RSS mode %d\n",
sc->params.rss.mode);
return (EINVAL);
}
/*
* Grab our Virtual Interface resource allocation, extract the
* features that we're interested in and do a bit of sanity testing on
* what we discover.
*/
rc = -t4vf_get_vfres(sc);
if (rc != 0) {
device_printf(sc->dev,
"unable to get virtual interface resources: %d\n", rc);
return (rc);
}
/*
* Check for various parameter sanity issues.
*/
if (sc->params.vfres.pmask == 0) {
device_printf(sc->dev, "no port access configured/usable!\n");
return (EINVAL);
}
if (sc->params.vfres.nvi == 0) {
device_printf(sc->dev,
"no virtual interfaces configured/usable!\n");
return (EINVAL);
}
sc->params.portvec = sc->params.vfres.pmask;
param = FW_PARAM_PFVF(MAX_PKTS_PER_ETH_TX_PKTS_WR);
rc = -t4vf_query_params(sc, 1, &param, &val);
if (rc == 0)
sc->params.max_pkts_per_eth_tx_pkts_wr = val;
else
sc->params.max_pkts_per_eth_tx_pkts_wr = 14;
rc = t4_verify_chip_settings(sc);
if (rc != 0)
return (rc);
t4_init_rx_buf_info(sc);
return (0);
}
static int
set_params__post_init(struct adapter *sc)
{
uint32_t param, val;
/* ask for encapsulated CPLs */
param = FW_PARAM_PFVF(CPLFW4MSG_ENCAP);
val = 1;
(void)t4vf_set_params(sc, 1, &param, &val);
/* Enable 32b port caps if the firmware supports it. */
param = FW_PARAM_PFVF(PORT_CAPS32);
val = 1;
if (t4vf_set_params(sc, 1, &param, &val) == 0)
sc->params.port_caps32 = 1;
return (0);
}
#undef FW_PARAM_PFVF
#undef FW_PARAM_DEV
static int
cfg_itype_and_nqueues(struct adapter *sc, struct intrs_and_queues *iaq)
{
struct vf_resources *vfres;
int nrxq, ntxq, nports;
int itype, iq_avail, navail, rc;
/*
* Figure out the layout of queues across our VIs and ensure
* we can allocate enough interrupts for our layout.
*/
vfres = &sc->params.vfres;
nports = sc->params.nports;
bzero(iaq, sizeof(*iaq));
for (itype = INTR_MSIX; itype != 0; itype >>= 1) {
if (itype == INTR_INTX)
continue;
if (itype == INTR_MSIX)
navail = pci_msix_count(sc->dev);
else
navail = pci_msi_count(sc->dev);
if (navail == 0)
continue;
iaq->intr_type = itype;
/*
* XXX: The Linux driver reserves an Ingress Queue for
* forwarded interrupts when using MSI (but not MSI-X).
* It seems it just always asks for 2 interrupts and
* forwards all rxqs to the forwarded interrupt.
*
* We must reserve one IRQ for the for the firmware
* event queue.
*
* Every rxq requires an ingress queue with a free
* list and interrupts and an egress queue. Every txq
* requires an ETH egress queue.
*/
iaq->nirq = T4VF_EXTRA_INTR;
/*
* First, determine how many queues we can allocate.
* Start by finding the upper bound on rxqs from the
* limit on ingress queues.
*/
iq_avail = vfres->niqflint - iaq->nirq;
if (iq_avail < nports) {
device_printf(sc->dev,
"Not enough ingress queues (%d) for %d ports\n",
vfres->niqflint, nports);
return (ENXIO);
}
/*
* Try to honor the cap on interrupts. If there aren't
* enough interrupts for at least one interrupt per
* port, then don't bother, we will just forward all
* interrupts to one interrupt in that case.
*/
if (iaq->nirq + nports <= navail) {
if (iq_avail > navail - iaq->nirq)
iq_avail = navail - iaq->nirq;
}
nrxq = nports * t4_nrxq;
if (nrxq > iq_avail) {
/*
* Too many ingress queues. Use what we can.
*/
nrxq = (iq_avail / nports) * nports;
}
KASSERT(nrxq <= iq_avail, ("too many ingress queues"));
/*
* Next, determine the upper bound on txqs from the limit
* on ETH queues.
*/
if (vfres->nethctrl < nports) {
device_printf(sc->dev,
"Not enough ETH queues (%d) for %d ports\n",
vfres->nethctrl, nports);
return (ENXIO);
}
ntxq = nports * t4_ntxq;
if (ntxq > vfres->nethctrl) {
/*
* Too many ETH queues. Use what we can.
*/
ntxq = (vfres->nethctrl / nports) * nports;
}
KASSERT(ntxq <= vfres->nethctrl, ("too many ETH queues"));
/*
* Finally, ensure we have enough egress queues.
*/
if (vfres->neq < nports * 2) {
device_printf(sc->dev,
"Not enough egress queues (%d) for %d ports\n",
vfres->neq, nports);
return (ENXIO);
}
if (nrxq + ntxq > vfres->neq) {
/* Just punt and use 1 for everything. */
nrxq = ntxq = nports;
}
KASSERT(nrxq <= iq_avail, ("too many ingress queues"));
KASSERT(ntxq <= vfres->nethctrl, ("too many ETH queues"));
KASSERT(nrxq + ntxq <= vfres->neq, ("too many egress queues"));
/*
* Do we have enough interrupts? For MSI the interrupts
* have to be a power of 2 as well.
*/
iaq->nirq += nrxq;
iaq->ntxq = ntxq;
iaq->nrxq = nrxq;
if (iaq->nirq <= navail &&
(itype != INTR_MSI || powerof2(iaq->nirq))) {
navail = iaq->nirq;
if (itype == INTR_MSIX)
rc = pci_alloc_msix(sc->dev, &navail);
else
rc = pci_alloc_msi(sc->dev, &navail);
if (rc != 0) {
device_printf(sc->dev,
"failed to allocate vectors:%d, type=%d, req=%d, rcvd=%d\n",
itype, rc, iaq->nirq, navail);
return (rc);
}
if (navail == iaq->nirq) {
return (0);
}
pci_release_msi(sc->dev);
}
/* Fall back to a single interrupt. */
iaq->nirq = 1;
navail = iaq->nirq;
if (itype == INTR_MSIX)
rc = pci_alloc_msix(sc->dev, &navail);
else
rc = pci_alloc_msi(sc->dev, &navail);
if (rc != 0)
device_printf(sc->dev,
"failed to allocate vectors:%d, type=%d, req=%d, rcvd=%d\n",
itype, rc, iaq->nirq, navail);
return (rc);
}
device_printf(sc->dev,
"failed to find a usable interrupt type. "
"allowed=%d, msi-x=%d, msi=%d, intx=1", t4_intr_types,
pci_msix_count(sc->dev), pci_msi_count(sc->dev));
return (ENXIO);
}
static int
t4vf_attach(device_t dev)
{
struct adapter *sc;
int rc = 0, i, j, rqidx, tqidx, n, p, pmask;
struct make_dev_args mda;
struct intrs_and_queues iaq;
struct sge *s;
sc = device_get_softc(dev);
sc->dev = dev;
pci_enable_busmaster(dev);
pci_set_max_read_req(dev, 4096);
sc->params.pci.mps = pci_get_max_payload(dev);
sc->flags |= IS_VF;
TUNABLE_INT_FETCH("hw.cxgbe.dflags", &sc->debug_flags);
sc->sge_gts_reg = VF_SGE_REG(A_SGE_VF_GTS);
sc->sge_kdoorbell_reg = VF_SGE_REG(A_SGE_VF_KDOORBELL);
snprintf(sc->lockname, sizeof(sc->lockname), "%s",
device_get_nameunit(dev));
mtx_init(&sc->sc_lock, sc->lockname, 0, MTX_DEF);
t4_add_adapter(sc);
mtx_init(&sc->sfl_lock, "starving freelists", 0, MTX_DEF);
TAILQ_INIT(&sc->sfl);
callout_init_mtx(&sc->sfl_callout, &sc->sfl_lock, 0);
mtx_init(&sc->reg_lock, "indirect register access", 0, MTX_DEF);
rc = t4_map_bars_0_and_4(sc);
if (rc != 0)
goto done; /* error message displayed already */
rc = -t4vf_prep_adapter(sc);
if (rc != 0)
goto done;
t4_init_devnames(sc);
if (sc->names == NULL) {
rc = ENOTSUP;
goto done; /* error message displayed already */
}
/*
* Leave the 'pf' and 'mbox' values as zero. This ensures
* that various firmware messages do not set the fields which
* is the correct thing to do for a VF.
*/
memset(sc->chan_map, 0xff, sizeof(sc->chan_map));
make_dev_args_init(&mda);
mda.mda_devsw = &t4vf_cdevsw;
mda.mda_uid = UID_ROOT;
mda.mda_gid = GID_WHEEL;
mda.mda_mode = 0600;
mda.mda_si_drv1 = sc;
rc = make_dev_s(&mda, &sc->cdev, "%s", device_get_nameunit(dev));
if (rc != 0)
device_printf(dev, "failed to create nexus char device: %d.\n",
rc);
#if defined(__i386__)
if ((cpu_feature & CPUID_CX8) == 0) {
device_printf(dev, "64 bit atomics not available.\n");
rc = ENOTSUP;
goto done;
}
#endif
/*
* Some environments do not properly handle PCIE FLRs -- e.g. in Linux
* 2.6.31 and later we can't call pci_reset_function() in order to
* issue an FLR because of a self- deadlock on the device semaphore.
* Meanwhile, the OS infrastructure doesn't issue FLRs in all the
* cases where they're needed -- for instance, some versions of KVM
* fail to reset "Assigned Devices" when the VM reboots. Therefore we
* use the firmware based reset in order to reset any per function
* state.
*/
rc = -t4vf_fw_reset(sc);
if (rc != 0) {
device_printf(dev, "FW reset failed: %d\n", rc);
goto done;
}
sc->flags |= FW_OK;
/*
* Grab basic operational parameters. These will predominantly have
* been set up by the Physical Function Driver or will be hard coded
* into the adapter. We just have to live with them ... Note that
* we _must_ get our VPD parameters before our SGE parameters because
* we need to know the adapter's core clock from the VPD in order to
* properly decode the SGE Timer Values.
*/
rc = get_params__pre_init(sc);
if (rc != 0)
goto done; /* error message displayed already */
rc = get_params__post_init(sc);
if (rc != 0)
goto done; /* error message displayed already */
rc = set_params__post_init(sc);
if (rc != 0)
goto done; /* error message displayed already */
rc = t4_map_bar_2(sc);
if (rc != 0)
goto done; /* error message displayed already */
rc = t4_create_dma_tag(sc);
if (rc != 0)
goto done; /* error message displayed already */
/*
* The number of "ports" which we support is equal to the number of
* Virtual Interfaces with which we've been provisioned.
*/
sc->params.nports = imin(sc->params.vfres.nvi, MAX_NPORTS);
/*
* We may have been provisioned with more VIs than the number of
* ports we're allowed to access (our Port Access Rights Mask).
* Just use a single VI for each port.
*/
sc->params.nports = imin(sc->params.nports,
bitcount32(sc->params.vfres.pmask));
#ifdef notyet
/*
* XXX: The Linux VF driver will lower nports if it thinks there
* are too few resources in vfres (niqflint, nethctrl, neq).
*/
#endif
/*
* First pass over all the ports - allocate VIs and initialize some
* basic parameters like mac address, port type, etc.
*/
pmask = sc->params.vfres.pmask;
for_each_port(sc, i) {
struct port_info *pi;
uint8_t mac[ETHER_ADDR_LEN];
pi = malloc(sizeof(*pi), M_CXGBE, M_ZERO | M_WAITOK);
sc->port[i] = pi;
/* These must be set before t4_port_init */
pi->adapter = sc;
pi->port_id = i;
pi->nvi = 1;
pi->vi = malloc(sizeof(struct vi_info) * pi->nvi, M_CXGBE,
M_ZERO | M_WAITOK);
/*
* Allocate the "main" VI and initialize parameters
* like mac addr.
*/
rc = -t4_port_init(sc, sc->mbox, sc->pf, 0, i);
if (rc != 0) {
device_printf(dev, "unable to initialize port %d: %d\n",
i, rc);
free(pi->vi, M_CXGBE);
free(pi, M_CXGBE);
sc->port[i] = NULL;
goto done;
}
/* Prefer the MAC address set by the PF, if there is one. */
n = 1;
p = ffs(pmask) - 1;
MPASS(p >= 0);
rc = t4vf_get_vf_mac(sc, p, &n, mac);
if (rc == 0 && n == 1)
t4_os_set_hw_addr(pi, mac);
pmask &= ~(1 << p);
/* No t4_link_start. */
snprintf(pi->lockname, sizeof(pi->lockname), "%sp%d",
device_get_nameunit(dev), i);
mtx_init(&pi->pi_lock, pi->lockname, 0, MTX_DEF);
sc->chan_map[pi->tx_chan] = i;
/* All VIs on this port share this media. */
ifmedia_init(&pi->media, IFM_IMASK, cxgbe_media_change,
cxgbe_media_status);
pi->dev = device_add_child(dev, sc->names->vf_ifnet_name, -1);
if (pi->dev == NULL) {
device_printf(dev,
"failed to add device for port %d.\n", i);
rc = ENXIO;
goto done;
}
pi->vi[0].dev = pi->dev;
device_set_softc(pi->dev, pi);
}
/*
* Interrupt type, # of interrupts, # of rx/tx queues, etc.
*/
rc = cfg_itype_and_nqueues(sc, &iaq);
if (rc != 0)
goto done; /* error message displayed already */
sc->intr_type = iaq.intr_type;
sc->intr_count = iaq.nirq;
s = &sc->sge;
s->nrxq = sc->params.nports * iaq.nrxq;
s->ntxq = sc->params.nports * iaq.ntxq;
s->neq = s->ntxq + s->nrxq; /* the free list in an rxq is an eq */
s->neq += sc->params.nports; /* ctrl queues: 1 per port */
s->niq = s->nrxq + 1; /* 1 extra for firmware event queue */
s->iqmap_sz = s->niq;
s->eqmap_sz = s->neq;
s->rxq = malloc(s->nrxq * sizeof(struct sge_rxq), M_CXGBE,
M_ZERO | M_WAITOK);
s->txq = malloc(s->ntxq * sizeof(struct sge_txq), M_CXGBE,
M_ZERO | M_WAITOK);
s->iqmap = malloc(s->iqmap_sz * sizeof(struct sge_iq *), M_CXGBE,
M_ZERO | M_WAITOK);
s->eqmap = malloc(s->eqmap_sz * sizeof(struct sge_eq *), M_CXGBE,
M_ZERO | M_WAITOK);
sc->irq = malloc(sc->intr_count * sizeof(struct irq), M_CXGBE,
M_ZERO | M_WAITOK);
/*
* Second pass over the ports. This time we know the number of rx and
* tx queues that each port should get.
*/
rqidx = tqidx = 0;
for_each_port(sc, i) {
struct port_info *pi = sc->port[i];
struct vi_info *vi;
if (pi == NULL)
continue;
for_each_vi(pi, j, vi) {
vi->pi = pi;
vi->adapter = sc;
vi->qsize_rxq = t4_qsize_rxq;
vi->qsize_txq = t4_qsize_txq;
vi->first_rxq = rqidx;
vi->first_txq = tqidx;
vi->tmr_idx = t4_tmr_idx;
vi->pktc_idx = t4_pktc_idx;
vi->nrxq = j == 0 ? iaq.nrxq: 1;
vi->ntxq = j == 0 ? iaq.ntxq: 1;
rqidx += vi->nrxq;
tqidx += vi->ntxq;
vi->rsrv_noflowq = 0;
}
}
rc = t4_setup_intr_handlers(sc);
if (rc != 0) {
device_printf(dev,
"failed to setup interrupt handlers: %d\n", rc);
goto done;
}
rc = bus_generic_attach(dev);
if (rc != 0) {
device_printf(dev,
"failed to attach all child ports: %d\n", rc);
goto done;
}
device_printf(dev,
"%d ports, %d %s interrupt%s, %d eq, %d iq\n",
sc->params.nports, sc->intr_count, sc->intr_type == INTR_MSIX ?
"MSI-X" : "MSI", sc->intr_count > 1 ? "s" : "", sc->sge.neq,
sc->sge.niq);
done:
if (rc != 0)
t4_detach_common(dev);
else
t4_sysctls(sc);
return (rc);
}
static void
get_regs(struct adapter *sc, struct t4_regdump *regs, uint8_t *buf)
{
/* 0x3f is used as the revision for VFs. */
regs->version = chip_id(sc) | (0x3f << 10);
t4_get_regs(sc, buf, regs->len);
}
static void
t4_clr_vi_stats(struct adapter *sc)
{
int reg;
for (reg = A_MPS_VF_STAT_TX_VF_BCAST_BYTES_L;
reg <= A_MPS_VF_STAT_RX_VF_ERR_FRAMES_H; reg += 4)
t4_write_reg(sc, VF_MPS_REG(reg), 0);
}
static int
t4vf_ioctl(struct cdev *dev, unsigned long cmd, caddr_t data, int fflag,
struct thread *td)
{
int rc;
struct adapter *sc = dev->si_drv1;
rc = priv_check(td, PRIV_DRIVER);
if (rc != 0)
return (rc);
switch (cmd) {
case CHELSIO_T4_GETREG: {
struct t4_reg *edata = (struct t4_reg *)data;
if ((edata->addr & 0x3) != 0 || edata->addr >= sc->mmio_len)
return (EFAULT);
if (edata->size == 4)
edata->val = t4_read_reg(sc, edata->addr);
else if (edata->size == 8)
edata->val = t4_read_reg64(sc, edata->addr);
else
return (EINVAL);
break;
}
case CHELSIO_T4_SETREG: {
struct t4_reg *edata = (struct t4_reg *)data;
if ((edata->addr & 0x3) != 0 || edata->addr >= sc->mmio_len)
return (EFAULT);
if (edata->size == 4) {
if (edata->val & 0xffffffff00000000)
return (EINVAL);
t4_write_reg(sc, edata->addr, (uint32_t) edata->val);
} else if (edata->size == 8)
t4_write_reg64(sc, edata->addr, edata->val);
else
return (EINVAL);
break;
}
case CHELSIO_T4_REGDUMP: {
struct t4_regdump *regs = (struct t4_regdump *)data;
int reglen = t4_get_regs_len(sc);
uint8_t *buf;
if (regs->len < reglen) {
regs->len = reglen; /* hint to the caller */
return (ENOBUFS);
}
regs->len = reglen;
buf = malloc(reglen, M_CXGBE, M_WAITOK | M_ZERO);
get_regs(sc, regs, buf);
rc = copyout(buf, regs->data, reglen);
free(buf, M_CXGBE);
break;
}
case CHELSIO_T4_CLEAR_STATS: {
int i, v;
u_int port_id = *(uint32_t *)data;
struct port_info *pi;
struct vi_info *vi;
if (port_id >= sc->params.nports)
return (EINVAL);
pi = sc->port[port_id];
/* MAC stats */
pi->tx_parse_error = 0;
t4_clr_vi_stats(sc);
/*
* Since this command accepts a port, clear stats for
* all VIs on this port.
*/
for_each_vi(pi, v, vi) {
if (vi->flags & VI_INIT_DONE) {
struct sge_rxq *rxq;
struct sge_txq *txq;
for_each_rxq(vi, i, rxq) {
#if defined(INET) || defined(INET6)
rxq->lro.lro_queued = 0;
rxq->lro.lro_flushed = 0;
#endif
rxq->rxcsum = 0;
rxq->vlan_extraction = 0;
}
for_each_txq(vi, i, txq) {
txq->txcsum = 0;
txq->tso_wrs = 0;
txq->vlan_insertion = 0;
txq->imm_wrs = 0;
txq->sgl_wrs = 0;
txq->txpkt_wrs = 0;
txq->txpkts0_wrs = 0;
txq->txpkts1_wrs = 0;
txq->txpkts0_pkts = 0;
txq->txpkts1_pkts = 0;
txq->txpkts_flush = 0;
mp_ring_reset_stats(txq->r);
}
}
}
break;
}
case CHELSIO_T4_SCHED_CLASS:
rc = t4_set_sched_class(sc, (struct t4_sched_params *)data);
break;
case CHELSIO_T4_SCHED_QUEUE:
rc = t4_set_sched_queue(sc, (struct t4_sched_queue *)data);
break;
default:
rc = ENOTTY;
}
return (rc);
}
static device_method_t t4vf_methods[] = {
DEVMETHOD(device_probe, t4vf_probe),
DEVMETHOD(device_attach, t4vf_attach),
DEVMETHOD(device_detach, t4_detach_common),
DEVMETHOD_END
};
static driver_t t4vf_driver = {
"t4vf",
t4vf_methods,
sizeof(struct adapter)
};
static device_method_t t5vf_methods[] = {
DEVMETHOD(device_probe, t5vf_probe),
DEVMETHOD(device_attach, t4vf_attach),
DEVMETHOD(device_detach, t4_detach_common),
DEVMETHOD_END
};
static driver_t t5vf_driver = {
"t5vf",
t5vf_methods,
sizeof(struct adapter)
};
static device_method_t t6vf_methods[] = {
DEVMETHOD(device_probe, t6vf_probe),
DEVMETHOD(device_attach, t4vf_attach),
DEVMETHOD(device_detach, t4_detach_common),
DEVMETHOD_END
};
static driver_t t6vf_driver = {
"t6vf",
t6vf_methods,
sizeof(struct adapter)
};
static driver_t cxgbev_driver = {
"cxgbev",
cxgbe_methods,
sizeof(struct port_info)
};
static driver_t cxlv_driver = {
"cxlv",
cxgbe_methods,
sizeof(struct port_info)
};
static driver_t ccv_driver = {
"ccv",
cxgbe_methods,
sizeof(struct port_info)
};
static devclass_t t4vf_devclass, t5vf_devclass, t6vf_devclass;
static devclass_t cxgbev_devclass, cxlv_devclass, ccv_devclass;
DRIVER_MODULE(t4vf, pci, t4vf_driver, t4vf_devclass, 0, 0);
MODULE_VERSION(t4vf, 1);
MODULE_DEPEND(t4vf, t4nex, 1, 1, 1);
DRIVER_MODULE(t5vf, pci, t5vf_driver, t5vf_devclass, 0, 0);
MODULE_VERSION(t5vf, 1);
MODULE_DEPEND(t5vf, t5nex, 1, 1, 1);
DRIVER_MODULE(t6vf, pci, t6vf_driver, t6vf_devclass, 0, 0);
MODULE_VERSION(t6vf, 1);
MODULE_DEPEND(t6vf, t6nex, 1, 1, 1);
DRIVER_MODULE(cxgbev, t4vf, cxgbev_driver, cxgbev_devclass, 0, 0);
MODULE_VERSION(cxgbev, 1);
DRIVER_MODULE(cxlv, t5vf, cxlv_driver, cxlv_devclass, 0, 0);
MODULE_VERSION(cxlv, 1);
DRIVER_MODULE(ccv, t6vf, ccv_driver, ccv_devclass, 0, 0);
MODULE_VERSION(ccv, 1);
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