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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2015-2018 Solarflare Communications Inc.
* All rights reserved.
*
* 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
*
* The views and conclusions contained in the software and documentation are
* those of the authors and should not be interpreted as representing official
* policies, either expressed or implied, of the FreeBSD Project.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "efx.h"
#include "efx_impl.h"
#if EFSYS_OPT_MEDFORD2
static __checkReturn efx_rc_t
medford2_nic_get_required_pcie_bandwidth(
__in efx_nic_t *enp,
__out uint32_t *bandwidth_mbpsp)
{
uint32_t port_modes;
uint32_t current_mode;
uint32_t bandwidth;
efx_rc_t rc;
/* FIXME: support new Medford2 dynamic port modes */
if ((rc = efx_mcdi_get_port_modes(enp, &port_modes,
¤t_mode)) != 0) {
/* No port mode info available. */
bandwidth = 0;
goto out;
}
if ((rc = ef10_nic_get_port_mode_bandwidth(current_mode,
&bandwidth)) != 0)
goto fail1;
out:
*bandwidth_mbpsp = bandwidth;
return (0);
fail1:
EFSYS_PROBE1(fail1, efx_rc_t, rc);
return (rc);
}
__checkReturn efx_rc_t
medford2_board_cfg(
__in efx_nic_t *enp)
{
efx_nic_cfg_t *encp = &(enp->en_nic_cfg);
uint32_t sysclk, dpcpu_clk;
uint32_t end_padding;
uint32_t bandwidth;
efx_rc_t rc;
/*
* Enable firmware workarounds for hardware errata.
* Expected responses are:
* - 0 (zero):
* Success: workaround enabled or disabled as requested.
* - MC_CMD_ERR_ENOSYS (reported as ENOTSUP):
* Firmware does not support the MC_CMD_WORKAROUND request.
* (assume that the workaround is not supported).
* - MC_CMD_ERR_ENOENT (reported as ENOENT):
* Firmware does not support the requested workaround.
* - MC_CMD_ERR_EPERM (reported as EACCES):
* Unprivileged function cannot enable/disable workarounds.
*
* See efx_mcdi_request_errcode() for MCDI error translations.
*/
if (EFX_PCI_FUNCTION_IS_VF(encp)) {
/*
* Interrupt testing does not work for VFs on Medford2.
* See bug50084 and bug71432 comment 21.
*/
encp->enc_bug41750_workaround = B_TRUE;
}
/* Chained multicast is always enabled on Medford2 */
encp->enc_bug26807_workaround = B_TRUE;
/*
* If the bug61265 workaround is enabled, then interrupt holdoff timers
* cannot be controlled by timer table writes, so MCDI must be used
* (timer table writes can still be used for wakeup timers).
*/
rc = efx_mcdi_set_workaround(enp, MC_CMD_WORKAROUND_BUG61265, B_TRUE,
NULL);
if ((rc == 0) || (rc == EACCES))
encp->enc_bug61265_workaround = B_TRUE;
else if ((rc == ENOTSUP) || (rc == ENOENT))
encp->enc_bug61265_workaround = B_FALSE;
else
goto fail1;
/* Get clock frequencies (in MHz). */
if ((rc = efx_mcdi_get_clock(enp, &sysclk, &dpcpu_clk)) != 0)
goto fail2;
/*
* The Medford2 timer quantum is 1536 dpcpu_clk cycles, documented for
* the EV_TMR_VAL field of EV_TIMER_TBL. Scale for MHz and ns units.
*/
encp->enc_evq_timer_quantum_ns = 1536000UL / dpcpu_clk; /* 1536 cycles */
encp->enc_evq_timer_max_us = (encp->enc_evq_timer_quantum_ns <<
FRF_CZ_TC_TIMER_VAL_WIDTH) / 1000;
/* Alignment for receive packet DMA buffers */
encp->enc_rx_buf_align_start = 1;
/* Get the RX DMA end padding alignment configuration */
if ((rc = efx_mcdi_get_rxdp_config(enp, &end_padding)) != 0) {
if (rc != EACCES)
goto fail3;
/* Assume largest tail padding size supported by hardware */
end_padding = 256;
}
encp->enc_rx_buf_align_end = end_padding;
/*
* The maximum supported transmit queue size is 2048. TXQs with 4096
* descriptors are not supported as the top bit is used for vfifo
* stuffing.
*/
encp->enc_txq_max_ndescs = 2048;
EFX_STATIC_ASSERT(MEDFORD2_PIOBUF_NBUFS <= EF10_MAX_PIOBUF_NBUFS);
encp->enc_piobuf_limit = MEDFORD2_PIOBUF_NBUFS;
encp->enc_piobuf_size = MEDFORD2_PIOBUF_SIZE;
encp->enc_piobuf_min_alloc_size = MEDFORD2_MIN_PIO_ALLOC_SIZE;
/*
* Medford2 stores a single global copy of VPD, not per-PF as on
* Huntington.
*/
encp->enc_vpd_is_global = B_TRUE;
rc = medford2_nic_get_required_pcie_bandwidth(enp, &bandwidth);
if (rc != 0)
goto fail4;
encp->enc_required_pcie_bandwidth_mbps = bandwidth;
encp->enc_max_pcie_link_gen = EFX_PCIE_LINK_SPEED_GEN3;
return (0);
fail4:
EFSYS_PROBE(fail4);
fail3:
EFSYS_PROBE(fail3);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, efx_rc_t, rc);
return (rc);
}
#endif /* EFSYS_OPT_MEDFORD2 */
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