| Current Path : /usr/src/sys/dev/sfxge/common/ |
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 : //usr/src/sys/dev/sfxge/common/efx_mcdi.c |
/*-
* Copyright 2008-2009 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 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/common/efx_mcdi.c 228100 2011-11-28 20:28:23Z philip $");
#include "efsys.h"
#include "efx.h"
#include "efx_types.h"
#include "efx_regs.h"
#include "efx_regs_mcdi.h"
#include "efx_impl.h"
#if EFSYS_OPT_MCDI
/* Shared memory layout */
#define MCDI_P1_DBL_OFST 0x0
#define MCDI_P2_DBL_OFST 0x1
#define MCDI_P1_PDU_OFST 0x2
#define MCDI_P2_PDU_OFST 0x42
#define MCDI_P1_REBOOT_OFST 0x1fe
#define MCDI_P2_REBOOT_OFST 0x1ff
/* A reboot/assertion causes the MCDI status word to be set after the
* command word is set or a REBOOT event is sent. If we notice a reboot
* via these mechanisms then wait 10ms for the status word to be set.
*/
#define MCDI_STATUS_SLEEP_US 10000
void
efx_mcdi_request_start(
__in efx_nic_t *enp,
__in efx_mcdi_req_t *emrp,
__in boolean_t ev_cpl)
{
efx_mcdi_iface_t *emip = &(enp->en_u.siena.enu_mip);
efx_dword_t dword;
unsigned int seq;
unsigned int xflags;
unsigned int pdur;
unsigned int dbr;
unsigned int pos;
int state;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_MCDI);
EFSYS_ASSERT3U(enp->en_features, &, EFX_FEATURE_MCDI);
switch (emip->emi_port) {
case 1:
pdur = MCDI_P1_PDU_OFST;
dbr = MCDI_P1_DBL_OFST;
break;
case 2:
pdur = MCDI_P2_PDU_OFST;
dbr = MCDI_P2_DBL_OFST;
break;
default:
EFSYS_ASSERT(0);
pdur = dbr = 0;
};
/*
* efx_mcdi_request_start() is naturally serialised against both
* efx_mcdi_request_poll() and efx_mcdi_ev_cpl()/efx_mcdi_ev_death(),
* by virtue of there only being one oustanding MCDI request.
* Unfortunately, upper layers may also call efx_mcdi_request_abort()
* at any time, to timeout a pending mcdi request, That request may
* then subsequently complete, meaning efx_mcdi_ev_cpl() or
* efx_mcdi_ev_death() may end up running in parallel with
* efx_mcdi_request_start(). This race is handled by ensuring that
* %emi_pending_req, %emi_ev_cpl and %emi_seq are protected by the
* en_eslp lock.
*/
EFSYS_LOCK(enp->en_eslp, state);
EFSYS_ASSERT(emip->emi_pending_req == NULL);
emip->emi_pending_req = emrp;
emip->emi_ev_cpl = ev_cpl;
emip->emi_poll_cnt = 0;
seq = emip->emi_seq++ & 0xf;
EFSYS_UNLOCK(enp->en_eslp, state);
xflags = 0;
if (ev_cpl)
xflags |= MCDI_HEADER_XFLAGS_EVREQ;
/* Construct the header in shared memory */
EFX_POPULATE_DWORD_6(dword,
MCDI_HEADER_CODE, emrp->emr_cmd,
MCDI_HEADER_RESYNC, 1,
MCDI_HEADER_DATALEN, emrp->emr_in_length,
MCDI_HEADER_SEQ, seq,
MCDI_HEADER_RESPONSE, 0,
MCDI_HEADER_XFLAGS, xflags);
EFX_BAR_TBL_WRITED(enp, FR_CZ_MC_TREG_SMEM, pdur, &dword, B_TRUE);
for (pos = 0; pos < emrp->emr_in_length; pos += sizeof (efx_dword_t)) {
memcpy(&dword, MCDI_IN(*emrp, efx_dword_t, pos),
MIN(sizeof (dword), emrp->emr_in_length - pos));
EFX_BAR_TBL_WRITED(enp, FR_CZ_MC_TREG_SMEM,
pdur + 1 + (pos >> 2), &dword, B_FALSE);
}
/* Ring the doorbell */
EFX_POPULATE_DWORD_1(dword, EFX_DWORD_0, 0xd004be11);
EFX_BAR_TBL_WRITED(enp, FR_CZ_MC_TREG_SMEM, dbr, &dword, B_FALSE);
}
static void
efx_mcdi_request_copyout(
__in efx_nic_t *enp,
__in efx_mcdi_req_t *emrp)
{
efx_mcdi_iface_t *emip = &(enp->en_u.siena.enu_mip);
unsigned int pos;
unsigned int pdur;
efx_dword_t data;
pdur = (emip->emi_port == 1) ? MCDI_P1_PDU_OFST : MCDI_P2_PDU_OFST;
/* Copy payload out if caller supplied buffer */
if (emrp->emr_out_buf != NULL) {
size_t bytes = MIN(emrp->emr_out_length_used,
emrp->emr_out_length);
for (pos = 0; pos < bytes; pos += sizeof (efx_dword_t)) {
EFX_BAR_TBL_READD(enp, FR_CZ_MC_TREG_SMEM,
pdur + 1 + (pos >> 2), &data, B_FALSE);
memcpy(MCDI_OUT(*emrp, efx_dword_t, pos), &data,
MIN(sizeof (data), bytes - pos));
}
}
}
static int
efx_mcdi_request_errcode(
__in unsigned int err)
{
switch (err) {
case MC_CMD_ERR_ENOENT:
return (ENOENT);
case MC_CMD_ERR_EINTR:
return (EINTR);
case MC_CMD_ERR_EACCES:
return (EACCES);
case MC_CMD_ERR_EBUSY:
return (EBUSY);
case MC_CMD_ERR_EINVAL:
return (EINVAL);
case MC_CMD_ERR_EDEADLK:
return (EDEADLK);
case MC_CMD_ERR_ENOSYS:
return (ENOTSUP);
case MC_CMD_ERR_ETIME:
return (ETIMEDOUT);
#ifdef WITH_MCDI_V2
case MC_CMD_ERR_EAGAIN:
return (EAGAIN);
case MC_CMD_ERR_ENOSPC:
return (ENOSPC);
#endif
default:
EFSYS_PROBE1(mc_pcol_error, int, err);
return (EIO);
}
}
static void
efx_mcdi_raise_exception(
__in efx_nic_t *enp,
__in_opt efx_mcdi_req_t *emrp,
__in int rc)
{
efx_mcdi_iface_t *emip = &(enp->en_u.siena.enu_mip);
const efx_mcdi_transport_t *emtp = emip->emi_mtp;
efx_mcdi_exception_t exception;
/* Reboot or Assertion failure only */
EFSYS_ASSERT(rc == EIO || rc == EINTR);
/*
* If MC_CMD_REBOOT causes a reboot (dependent on parameters),
* then the EIO is not worthy of an exception.
*/
if (emrp != NULL && emrp->emr_cmd == MC_CMD_REBOOT && rc == EIO)
return;
exception = (rc == EIO)
? EFX_MCDI_EXCEPTION_MC_REBOOT
: EFX_MCDI_EXCEPTION_MC_BADASSERT;
emtp->emt_exception(emtp->emt_context, exception);
}
static int
efx_mcdi_poll_reboot(
__in efx_nic_t *enp)
{
efx_mcdi_iface_t *emip = &(enp->en_u.siena.enu_mip);
unsigned int rebootr;
efx_dword_t dword;
uint32_t value;
EFSYS_ASSERT(emip->emi_port == 1 || emip->emi_port == 2);
rebootr = ((emip->emi_port == 1)
? MCDI_P1_REBOOT_OFST
: MCDI_P2_REBOOT_OFST);
EFX_BAR_TBL_READD(enp, FR_CZ_MC_TREG_SMEM, rebootr, &dword, B_FALSE);
value = EFX_DWORD_FIELD(dword, EFX_DWORD_0);
if (value == 0)
return (0);
EFX_ZERO_DWORD(dword);
EFX_BAR_TBL_WRITED(enp, FR_CZ_MC_TREG_SMEM, rebootr, &dword, B_FALSE);
if (value == MC_STATUS_DWORD_ASSERT)
return (EINTR);
else
return (EIO);
}
__checkReturn boolean_t
efx_mcdi_request_poll(
__in efx_nic_t *enp)
{
efx_mcdi_iface_t *emip = &(enp->en_u.siena.enu_mip);
efx_mcdi_req_t *emrp;
efx_dword_t dword;
unsigned int pdur;
unsigned int seq;
unsigned int length;
int state;
int rc;
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_MCDI);
EFSYS_ASSERT3U(enp->en_family, ==, EFX_FAMILY_SIENA);
EFSYS_ASSERT3U(enp->en_features, &, EFX_FEATURE_MCDI);
/* Serialise against post-watchdog efx_mcdi_ev* */
EFSYS_LOCK(enp->en_eslp, state);
EFSYS_ASSERT(emip->emi_pending_req != NULL);
EFSYS_ASSERT(!emip->emi_ev_cpl);
emrp = emip->emi_pending_req;
/* Check for reboot atomically w.r.t efx_mcdi_request_start */
if (emip->emi_poll_cnt++ == 0) {
if ((rc = efx_mcdi_poll_reboot(enp)) != 0) {
emip->emi_pending_req = NULL;
EFSYS_UNLOCK(enp->en_eslp, state);
goto fail1;
}
}
EFSYS_ASSERT(emip->emi_port == 1 || emip->emi_port == 2);
pdur = (emip->emi_port == 1) ? MCDI_P1_PDU_OFST : MCDI_P2_PDU_OFST;
/* Read the command header */
EFX_BAR_TBL_READD(enp, FR_CZ_MC_TREG_SMEM, pdur, &dword, B_FALSE);
if (EFX_DWORD_FIELD(dword, MCDI_HEADER_RESPONSE) == 0) {
EFSYS_UNLOCK(enp->en_eslp, state);
return (B_FALSE);
}
/* Request complete */
emip->emi_pending_req = NULL;
seq = (emip->emi_seq - 1) & 0xf;
/* Check for synchronous reboot */
if (EFX_DWORD_FIELD(dword, MCDI_HEADER_ERROR) != 0 &&
EFX_DWORD_FIELD(dword, MCDI_HEADER_DATALEN) == 0) {
/* Consume status word */
EFSYS_SPIN(MCDI_STATUS_SLEEP_US);
efx_mcdi_poll_reboot(enp);
EFSYS_UNLOCK(enp->en_eslp, state);
rc = EIO;
goto fail2;
}
EFSYS_UNLOCK(enp->en_eslp, state);
/* Check that the returned data is consistent */
if (EFX_DWORD_FIELD(dword, MCDI_HEADER_CODE) != emrp->emr_cmd ||
EFX_DWORD_FIELD(dword, MCDI_HEADER_SEQ) != seq) {
/* Response is for a different request */
rc = EIO;
goto fail3;
}
length = EFX_DWORD_FIELD(dword, MCDI_HEADER_DATALEN);
if (EFX_DWORD_FIELD(dword, MCDI_HEADER_ERROR)) {
efx_dword_t errdword;
int errcode;
EFSYS_ASSERT3U(length, ==, 4);
EFX_BAR_TBL_READD(enp, FR_CZ_MC_TREG_SMEM,
pdur + 1 + (MC_CMD_ERR_CODE_OFST >> 2),
&errdword, B_FALSE);
errcode = EFX_DWORD_FIELD(errdword, EFX_DWORD_0);
rc = efx_mcdi_request_errcode(errcode);
EFSYS_PROBE2(mcdi_err, int, emrp->emr_cmd, int, errcode);
goto fail4;
} else {
emrp->emr_out_length_used = length;
emrp->emr_rc = 0;
efx_mcdi_request_copyout(enp, emrp);
}
goto out;
fail4:
EFSYS_PROBE(fail4);
fail3:
EFSYS_PROBE(fail3);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, int, rc);
/* Fill out error state */
emrp->emr_rc = rc;
emrp->emr_out_length_used = 0;
/* Reboot/Assertion */
if (rc == EIO || rc == EINTR)
efx_mcdi_raise_exception(enp, emrp, rc);
out:
return (B_TRUE);
}
void
efx_mcdi_execute(
__in efx_nic_t *enp,
__in efx_mcdi_req_t *emrp)
{
efx_mcdi_iface_t *emip = &(enp->en_u.siena.enu_mip);
const efx_mcdi_transport_t *emtp = emip->emi_mtp;
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_MCDI);
EFSYS_ASSERT3U(enp->en_family, ==, EFX_FAMILY_SIENA);
EFSYS_ASSERT3U(enp->en_features, &, EFX_FEATURE_MCDI);
emtp->emt_execute(emtp->emt_context, emrp);
}
void
efx_mcdi_ev_cpl(
__in efx_nic_t *enp,
__in unsigned int seq,
__in unsigned int outlen,
__in int errcode)
{
efx_mcdi_iface_t *emip = &(enp->en_u.siena.enu_mip);
const efx_mcdi_transport_t *emtp = emip->emi_mtp;
efx_mcdi_req_t *emrp;
int state;
EFSYS_ASSERT3U(enp->en_mod_flags, &, EFX_MOD_MCDI);
EFSYS_ASSERT3U(enp->en_family, ==, EFX_FAMILY_SIENA);
EFSYS_ASSERT3U(enp->en_features, &, EFX_FEATURE_MCDI);
/*
* Serialise against efx_mcdi_request_poll()/efx_mcdi_request_start()
* when we're completing an aborted request.
*/
EFSYS_LOCK(enp->en_eslp, state);
if (emip->emi_pending_req == NULL || !emip->emi_ev_cpl ||
(seq != ((emip->emi_seq - 1) & 0xf))) {
EFSYS_ASSERT(emip->emi_aborted > 0);
if (emip->emi_aborted > 0)
--emip->emi_aborted;
EFSYS_UNLOCK(enp->en_eslp, state);
return;
}
emrp = emip->emi_pending_req;
emip->emi_pending_req = NULL;
EFSYS_UNLOCK(enp->en_eslp, state);
/*
* Fill out the remaining hdr fields, and copyout the payload
* if the user supplied an output buffer.
*/
if (errcode != 0) {
EFSYS_PROBE2(mcdi_err, int, emrp->emr_cmd,
int, errcode);
emrp->emr_out_length_used = 0;
emrp->emr_rc = efx_mcdi_request_errcode(errcode);
} else {
emrp->emr_out_length_used = outlen;
emrp->emr_rc = 0;
efx_mcdi_request_copyout(enp, emrp);
}
emtp->emt_ev_cpl(emtp->emt_context);
}
void
efx_mcdi_ev_death(
__in efx_nic_t *enp,
__in int rc)
{
efx_mcdi_iface_t *emip = &(enp->en_u.siena.enu_mip);
const efx_mcdi_transport_t *emtp = emip->emi_mtp;
efx_mcdi_req_t *emrp = NULL;
boolean_t ev_cpl;
int state;
/*
* The MCDI request (if there is one) has been terminated, either
* by a BADASSERT or REBOOT event.
*
* If there is an oustanding event-completed MCDI operation, then we
* will never receive the completion event (because both MCDI
* completions and BADASSERT events are sent to the same evq). So
* complete this MCDI op.
*
* This function might run in parallel with efx_mcdi_request_poll()
* for poll completed mcdi requests, and also with
* efx_mcdi_request_start() for post-watchdog completions.
*/
EFSYS_LOCK(enp->en_eslp, state);
emrp = emip->emi_pending_req;
ev_cpl = emip->emi_ev_cpl;
if (emrp != NULL && emip->emi_ev_cpl) {
emip->emi_pending_req = NULL;
emrp->emr_out_length_used = 0;
emrp->emr_rc = rc;
++emip->emi_aborted;
}
/* Since we're running in parallel with a request, consume the
* status word before dropping the lock.
*/
if (rc == EIO || rc == EINTR) {
EFSYS_SPIN(MCDI_STATUS_SLEEP_US);
(void) efx_mcdi_poll_reboot(enp);
}
EFSYS_UNLOCK(enp->en_eslp, state);
efx_mcdi_raise_exception(enp, emrp, rc);
if (emrp != NULL && ev_cpl)
emtp->emt_ev_cpl(emtp->emt_context);
}
__checkReturn int
efx_mcdi_version(
__in efx_nic_t *enp,
__out_ecount_opt(4) uint16_t versionp[4],
__out_opt uint32_t *buildp,
__out_opt efx_mcdi_boot_t *statusp)
{
uint8_t outbuf[MAX(MC_CMD_GET_VERSION_OUT_LEN,
MC_CMD_GET_BOOT_STATUS_OUT_LEN)];
efx_mcdi_req_t req;
efx_word_t *ver_words;
uint16_t version[4];
uint32_t build;
efx_mcdi_boot_t status;
int rc;
EFSYS_ASSERT3U(enp->en_family, ==, EFX_FAMILY_SIENA);
EFSYS_ASSERT3U(enp->en_features, &, EFX_FEATURE_MCDI);
EFX_STATIC_ASSERT(MC_CMD_GET_VERSION_IN_LEN == 0);
req.emr_cmd = MC_CMD_GET_VERSION;
req.emr_in_buf = NULL;
req.emr_in_length = 0;
req.emr_out_buf = outbuf;
req.emr_out_length = MC_CMD_GET_VERSION_OUT_LEN;
efx_mcdi_execute(enp, &req);
if (req.emr_rc != 0) {
rc = req.emr_rc;
goto fail1;
}
/* bootrom support */
if (req.emr_out_length_used == MC_CMD_GET_VERSION_V0_OUT_LEN) {
version[0] = version[1] = version[2] = version[3] = 0;
build = MCDI_OUT_DWORD(req, GET_VERSION_OUT_FIRMWARE);
goto version;
}
if (req.emr_out_length_used < MC_CMD_GET_VERSION_OUT_LEN) {
rc = EMSGSIZE;
goto fail2;
}
ver_words = MCDI_OUT2(req, efx_word_t, GET_VERSION_OUT_VERSION);
version[0] = EFX_WORD_FIELD(ver_words[0], EFX_WORD_0);
version[1] = EFX_WORD_FIELD(ver_words[1], EFX_WORD_0);
version[2] = EFX_WORD_FIELD(ver_words[2], EFX_WORD_0);
version[3] = EFX_WORD_FIELD(ver_words[3], EFX_WORD_0);
build = MCDI_OUT_DWORD(req, GET_VERSION_OUT_FIRMWARE);
version:
/* The bootrom doesn't understand BOOT_STATUS */
if (build == MC_CMD_GET_VERSION_OUT_FIRMWARE_BOOTROM) {
status = EFX_MCDI_BOOT_ROM;
goto out;
}
req.emr_cmd = MC_CMD_GET_BOOT_STATUS;
EFX_STATIC_ASSERT(MC_CMD_GET_BOOT_STATUS_IN_LEN == 0);
req.emr_in_buf = NULL;
req.emr_in_length = 0;
req.emr_out_buf = outbuf;
req.emr_out_length = MC_CMD_GET_BOOT_STATUS_OUT_LEN;
efx_mcdi_execute(enp, &req);
if (req.emr_rc != 0) {
rc = req.emr_rc;
goto fail3;
}
if (req.emr_out_length_used < MC_CMD_GET_BOOT_STATUS_OUT_LEN) {
rc = EMSGSIZE;
goto fail4;
}
if (MCDI_OUT_DWORD_FIELD(req, GET_BOOT_STATUS_OUT_FLAGS,
GET_BOOT_STATUS_OUT_FLAGS_PRIMARY))
status = EFX_MCDI_BOOT_PRIMARY;
else
status = EFX_MCDI_BOOT_SECONDARY;
out:
if (versionp != NULL)
memcpy(versionp, version, sizeof (version));
if (buildp != NULL)
*buildp = build;
if (statusp != NULL)
*statusp = status;
return (0);
fail4:
EFSYS_PROBE(fail4);
fail3:
EFSYS_PROBE(fail3);
fail2:
EFSYS_PROBE(fail2);
fail1:
EFSYS_PROBE1(fail1, int, rc);
return (rc);
}
__checkReturn int
efx_mcdi_init(
__in efx_nic_t *enp,
__in const efx_mcdi_transport_t *mtp)
{
efx_mcdi_iface_t *emip = &(enp->en_u.siena.enu_mip);
efx_oword_t oword;
unsigned int portnum;
int rc;
EFSYS_ASSERT3U(enp->en_mod_flags, ==, 0);
enp->en_mod_flags |= EFX_MOD_MCDI;
if (enp->en_family == EFX_FAMILY_FALCON)
return (0);
emip->emi_mtp = mtp;
/* Determine the port number to use for MCDI */
EFX_BAR_READO(enp, FR_AZ_CS_DEBUG_REG, &oword);
portnum = EFX_OWORD_FIELD(oword, FRF_CZ_CS_PORT_NUM);
if (portnum == 0) {
/* Presumably booted from ROM; only MCDI port 1 will work */
emip->emi_port = 1;
} else if (portnum <= 2) {
emip->emi_port = portnum;
} else {
rc = EINVAL;
goto fail1;
}
/*
* Wipe the atomic reboot status so subsequent MCDI requests succeed.
* BOOT_STATUS is preserved so eno_nic_probe() can boot out of the
* assertion handler.
*/
(void) efx_mcdi_poll_reboot(enp);
return (0);
fail1:
EFSYS_PROBE1(fail1, int, rc);
enp->en_mod_flags &= ~EFX_MOD_MCDI;
return (rc);
}
__checkReturn int
efx_mcdi_reboot(
__in efx_nic_t *enp)
{
uint8_t payload[MC_CMD_REBOOT_IN_LEN];
efx_mcdi_req_t req;
int rc;
/*
* We could require the caller to have caused en_mod_flags=0 to
* call this function. This doesn't help the other port though,
* who's about to get the MC ripped out from underneath them.
* Since they have to cope with the subsequent fallout of MCDI
* failures, we should as well.
*/
EFSYS_ASSERT3U(enp->en_magic, ==, EFX_NIC_MAGIC);
req.emr_cmd = MC_CMD_REBOOT;
req.emr_in_buf = payload;
req.emr_in_length = MC_CMD_REBOOT_IN_LEN;
req.emr_out_buf = NULL;
req.emr_out_length = 0;
MCDI_IN_SET_DWORD(req, REBOOT_IN_FLAGS, 0);
efx_mcdi_execute(enp, &req);
/* Invert EIO */
if (req.emr_rc != EIO) {
rc = EIO;
goto fail1;
}
return (0);
fail1:
EFSYS_PROBE1(fail1, int, rc);
return (rc);
}
__checkReturn boolean_t
efx_mcdi_request_abort(
__in efx_nic_t *enp)
{
efx_mcdi_iface_t *emip = &(enp->en_u.siena.enu_mip);
efx_mcdi_req_t *emrp;
boolean_t aborted;
int state;
EFSYS_ASSERT3U(enp->en_family, ==, EFX_FAMILY_SIENA);
EFSYS_ASSERT3U(enp->en_features, &, EFX_FEATURE_MCDI);
/*
* efx_mcdi_ev_* may have already completed this event, and be
* spinning/blocked on the upper layer lock. So it *is* legitimate
* to for emi_pending_req to be NULL. If there is a pending event
* completed request, then provide a "credit" to allow
* efx_mcdi_ev_cpl() to accept a single spurious completion.
*/
EFSYS_LOCK(enp->en_eslp, state);
emrp = emip->emi_pending_req;
aborted = (emrp != NULL);
if (aborted) {
emip->emi_pending_req = NULL;
/* Error the request */
emrp->emr_out_length_used = 0;
emrp->emr_rc = ETIMEDOUT;
/* Provide a credit for seqno/emr_pending_req mismatches */
if (emip->emi_ev_cpl)
++emip->emi_aborted;
/*
* The upper layer has called us, so we don't
* need to complete the request.
*/
}
EFSYS_UNLOCK(enp->en_eslp, state);
return (aborted);
}
void
efx_mcdi_fini(
__in efx_nic_t *enp)
{
efx_mcdi_iface_t *emip = &(enp->en_u.siena.enu_mip);
EFSYS_ASSERT3U(enp->en_mod_flags, ==, EFX_MOD_MCDI);
enp->en_mod_flags &= ~EFX_MOD_MCDI;
if (~(enp->en_features) & EFX_FEATURE_MCDI)
return;
emip->emi_mtp = NULL;
emip->emi_port = 0;
emip->emi_aborted = 0;
}
#endif /* EFSYS_OPT_MCDI */