diff options
Diffstat (limited to 'drivers/net/sfc/base/ef10_intr.c')
| -rw-r--r-- | drivers/net/sfc/base/ef10_intr.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/drivers/net/sfc/base/ef10_intr.c b/drivers/net/sfc/base/ef10_intr.c new file mode 100644 index 00000000..16be3d8c --- /dev/null +++ b/drivers/net/sfc/base/ef10_intr.c @@ -0,0 +1,197 @@ +/* + * Copyright (c) 2012-2016 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 "efx.h" +#include "efx_impl.h" + + +#if EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD + + __checkReturn efx_rc_t +ef10_intr_init( + __in efx_nic_t *enp, + __in efx_intr_type_t type, + __in efsys_mem_t *esmp) +{ + _NOTE(ARGUNUSED(enp, type, esmp)) + return (0); +} + + + void +ef10_intr_enable( + __in efx_nic_t *enp) +{ + _NOTE(ARGUNUSED(enp)) +} + + + void +ef10_intr_disable( + __in efx_nic_t *enp) +{ + _NOTE(ARGUNUSED(enp)) +} + + + void +ef10_intr_disable_unlocked( + __in efx_nic_t *enp) +{ + _NOTE(ARGUNUSED(enp)) +} + + +static __checkReturn efx_rc_t +efx_mcdi_trigger_interrupt( + __in efx_nic_t *enp, + __in unsigned int level) +{ + efx_mcdi_req_t req; + uint8_t payload[MAX(MC_CMD_TRIGGER_INTERRUPT_IN_LEN, + MC_CMD_TRIGGER_INTERRUPT_OUT_LEN)]; + efx_rc_t rc; + + EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON || + enp->en_family == EFX_FAMILY_MEDFORD); + + if (level >= enp->en_nic_cfg.enc_intr_limit) { + rc = EINVAL; + goto fail1; + } + + (void) memset(payload, 0, sizeof (payload)); + req.emr_cmd = MC_CMD_TRIGGER_INTERRUPT; + req.emr_in_buf = payload; + req.emr_in_length = MC_CMD_TRIGGER_INTERRUPT_IN_LEN; + req.emr_out_buf = payload; + req.emr_out_length = MC_CMD_TRIGGER_INTERRUPT_OUT_LEN; + + MCDI_IN_SET_DWORD(req, TRIGGER_INTERRUPT_IN_INTR_LEVEL, level); + + efx_mcdi_execute(enp, &req); + + if (req.emr_rc != 0) { + rc = req.emr_rc; + goto fail2; + } + + return (0); + +fail2: + EFSYS_PROBE(fail2); + +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + + return (rc); +} + + __checkReturn efx_rc_t +ef10_intr_trigger( + __in efx_nic_t *enp, + __in unsigned int level) +{ + efx_nic_cfg_t *encp = &(enp->en_nic_cfg); + efx_rc_t rc; + + if (encp->enc_bug41750_workaround) { + /* + * bug 41750: Test interrupts don't work on Greenport + * bug 50084: Test interrupts don't work on VFs + */ + rc = ENOTSUP; + goto fail1; + } + + if ((rc = efx_mcdi_trigger_interrupt(enp, level)) != 0) + goto fail2; + + return (0); + +fail2: + EFSYS_PROBE(fail2); +fail1: + EFSYS_PROBE1(fail1, efx_rc_t, rc); + + return (rc); +} + + void +ef10_intr_status_line( + __in efx_nic_t *enp, + __out boolean_t *fatalp, + __out uint32_t *qmaskp) +{ + efx_dword_t dword; + + EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON || + enp->en_family == EFX_FAMILY_MEDFORD); + + /* Read the queue mask and implicitly acknowledge the interrupt. */ + EFX_BAR_READD(enp, ER_DZ_BIU_INT_ISR_REG, &dword, B_FALSE); + *qmaskp = EFX_DWORD_FIELD(dword, EFX_DWORD_0); + + EFSYS_PROBE1(qmask, uint32_t, *qmaskp); + + *fatalp = B_FALSE; +} + + void +ef10_intr_status_message( + __in efx_nic_t *enp, + __in unsigned int message, + __out boolean_t *fatalp) +{ + EFSYS_ASSERT(enp->en_family == EFX_FAMILY_HUNTINGTON || + enp->en_family == EFX_FAMILY_MEDFORD); + + _NOTE(ARGUNUSED(enp, message)) + + /* EF10 fatal errors are reported via events */ + *fatalp = B_FALSE; +} + + void +ef10_intr_fatal( + __in efx_nic_t *enp) +{ + /* EF10 fatal errors are reported via events */ + _NOTE(ARGUNUSED(enp)) +} + + void +ef10_intr_fini( + __in efx_nic_t *enp) +{ + _NOTE(ARGUNUSED(enp)) +} + +#endif /* EFSYS_OPT_HUNTINGTON || EFSYS_OPT_MEDFORD */ |