/*-
* Copyright (c) 2018 Microsemi Corporation.
* 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.
*/
/* $FreeBSD$ */
#include "smartpqi_includes.h"
/*
* Function to get processor count
*/
int os_get_processor_config(pqisrc_softstate_t *softs)
{
DBG_FUNC("IN\n");
softs->num_cpus_online = mp_ncpus;
DBG_FUNC("OUT\n");
return PQI_STATUS_SUCCESS;
}
/*
* Function to get interrupt count and type supported
*/
int os_get_intr_config(pqisrc_softstate_t *softs)
{
device_t dev;
int msi_count = 0;
int error = 0;
int ret = PQI_STATUS_SUCCESS;
dev = softs->os_specific.pqi_dev;
DBG_FUNC("IN\n");
msi_count = pci_msix_count(dev);
if (msi_count > softs->num_cpus_online)
msi_count = softs->num_cpus_online;
if (msi_count > PQI_MAX_MSIX)
msi_count = PQI_MAX_MSIX;
if (msi_count == 0 || (error = pci_alloc_msix(dev, &msi_count)) != 0) {
device_printf(dev, "alloc msix failed - msi_count=%d, err=%d; "
"will try MSI\n", msi_count, error);
pci_release_msi(dev);
} else {
softs->intr_count = msi_count;
softs->intr_type = INTR_TYPE_MSIX;
softs->os_specific.msi_enabled = TRUE;
device_printf(dev, "using MSI-X interrupts (%d vectors)\n",
msi_count);
}
if (!softs->intr_type) {
msi_count = 1;
if ((error = pci_alloc_msi(dev, &msi_count)) != 0) {
device_printf(dev, "alloc msi failed - err=%d; "
"will use INTx\n", error);
pci_release_msi(dev);
} else {
softs->os_specific.msi_enabled = TRUE;
softs->intr_count = msi_count;
softs->intr_type = INTR_TYPE_MSI;
device_printf(dev, "using MSI interrupts\n");
}
}
if (!softs->intr_type) {
device_printf(dev, "using legacy interrupts\n");
softs->intr_type = INTR_TYPE_FIXED;
softs->intr_count = 1;
}
if(!softs->intr_type) {
DBG_FUNC("OUT failed\n");
ret = PQI_STATUS_FAILURE;
return ret;
}
DBG_FUNC("OUT\n");
return ret;
}
void os_eventtaskqueue_enqueue(pqisrc_softstate_t *sc)
{
taskqueue_enqueue(taskqueue_swi, &sc->os_specific.event_task);
}
void pqisrc_event_worker(void *arg1, int arg2)
{
pqisrc_ack_all_events(arg1);
}
/*
* ithread routine to handle uniprocessor systems
*/
static void shared_ithread_routine(void *arg)
{
pqi_intr_ctx_t *intr_ctx = (pqi_intr_ctx_t *)arg;
pqisrc_softstate_t *softs = device_get_softc(intr_ctx->pqi_dev);
int oq_id = intr_ctx->oq_id;
DBG_FUNC("IN\n");
pqisrc_process_response_queue(softs, oq_id);
pqisrc_process_event_intr_src(softs, oq_id - 1);
DBG_FUNC("OUT\n");
}
/*
* ithread routine to process non event response
*/
static void common_ithread_routine(void *arg)
{
pqi_intr_ctx_t *intr_ctx = (pqi_intr_ctx_t *)arg;
pqisrc_softstate_t *softs = device_get_softc(intr_ctx->pqi_dev);
int oq_id = intr_ctx->oq_id;
DBG_FUNC("IN\n");
pqisrc_process_response_queue(softs, oq_id);
DBG_FUNC("OUT\n");
}
static void event_ithread_routine(void *arg)
{
pqi_intr_ctx_t *intr_ctx = (pqi_intr_ctx_t *)arg;
pqisrc_softstate_t *softs = device_get_softc(intr_ctx->pqi_dev);
int oq_id = intr_ctx->oq_id;
DBG_FUNC("IN\n");
pqisrc_process_event_intr_src(softs, oq_id);
DBG_FUNC("OUT\n");
}
/*
* Registration of legacy interrupt in case MSI is unsupported
*/
int register_legacy_intr(pqisrc_softstate_t *softs)
{
int error = 0;
device_t dev;
DBG_FUNC("IN\n");
dev = softs->os_specific.pqi_dev;
softs->os_specific.pqi_irq_rid[0] = 0;
softs->os_specific.pqi_irq[0] = bus_alloc_resource_any(dev, \
SYS_RES_IRQ, &softs->os_specific.pqi_irq_rid[0],
RF_ACTIVE | RF_SHAREABLE);
if (NULL == softs->os_specific.pqi_irq[0]) {
DBG_ERR("Failed to allocate resource for interrupt\n");
return PQI_STATUS_FAILURE;
}
if ((softs->os_specific.msi_ctx = os_mem_alloc(softs,sizeof(pqi_intr_ctx_t))) == NULL) {
DBG_ERR("Failed to allocate memory for msi_ctx\n");
return PQI_STATUS_FAILURE;
}
softs->os_specific.msi_ctx[0].pqi_dev = dev;
softs->os_specific.msi_ctx[0].oq_id = 1;
error = bus_setup_intr(dev, softs->os_specific.pqi_irq[0],
INTR_TYPE_CAM | INTR_MPSAFE, \
NULL, shared_ithread_routine,
&softs->os_specific.msi_ctx[0],
&softs->os_specific.intrcookie[0]);
if (error) {
DBG_ERR("Failed to setup legacy interrupt err = %d\n", error);
return error;
}
softs->os_specific.intr_registered[0] = TRUE;
DBG_FUNC("OUT error = %d\n", error);
return error;
}
/*
* Registration of MSIx
*/
int register_msix_intr(pqisrc_softstate_t *softs)
{
int error = 0;
int i = 0;
device_t dev;
dev = softs->os_specific.pqi_dev;
int msix_count = softs->intr_count;
DBG_FUNC("IN\n");
softs->os_specific.msi_ctx = os_mem_alloc(softs, sizeof(pqi_intr_ctx_t) * msix_count);
/*Add shared handler */
if (softs->share_opq_and_eventq) {
softs->os_specific.pqi_irq_rid[i] = i+1;
softs->os_specific.pqi_irq[i] = bus_alloc_resource_any(dev, \
SYS_RES_IRQ,
&softs->os_specific.pqi_irq_rid[i],
RF_SHAREABLE | RF_ACTIVE);
if (NULL == softs->os_specific.pqi_irq[i]) {
DBG_ERR("Failed to allocate \
event interrupt resource\n");
return PQI_STATUS_FAILURE;
}
softs->os_specific.msi_ctx[i].pqi_dev = dev;
softs->os_specific.msi_ctx[i].oq_id = i+1;
error = bus_setup_intr(dev,softs->os_specific.pqi_irq[i],
INTR_TYPE_CAM | INTR_MPSAFE,\
NULL,
shared_ithread_routine,
&softs->os_specific.msi_ctx[i],
&softs->os_specific.intrcookie[i]);
if (error) {
DBG_ERR("Failed to setup interrupt for events r=%d\n",
error);
return error;
}
softs->os_specific.intr_registered[i] = TRUE;
}
else {
/* Add event handler */
softs->os_specific.pqi_irq_rid[i] = i+1;
softs->os_specific.pqi_irq[i] = bus_alloc_resource_any(dev, \
SYS_RES_IRQ,
&softs->os_specific.pqi_irq_rid[i],
RF_SHAREABLE | RF_ACTIVE);
if (NULL == softs->os_specific.pqi_irq[i]) {
DBG_ERR("ERR : Failed to allocate \
event interrupt resource\n");
return PQI_STATUS_FAILURE;
}
softs->os_specific.msi_ctx[i].pqi_dev = dev;
softs->os_specific.msi_ctx[i].oq_id = i;
error = bus_setup_intr(dev,softs->os_specific.pqi_irq[i],
INTR_TYPE_CAM | INTR_MPSAFE,\
NULL,
event_ithread_routine,
&softs->os_specific.msi_ctx[i],
&softs->os_specific.intrcookie[i]);
if (error) {
DBG_ERR("Failed to setup interrupt for events err=%d\n",
error);
return error;
}
softs->os_specific.intr_registered[i] = TRUE;
/* Add interrupt handlers*/
for (i = 1; i < msix_count; ++i) {
softs->os_specific.pqi_irq_rid[i] = i+1;
softs->os_specific.pqi_irq[i] = \
bus_alloc_resource_any(dev,
SYS_RES_IRQ,
&softs->os_specific.pqi_irq_rid[i],
RF_SHAREABLE | RF_ACTIVE);
if (NULL == softs->os_specific.pqi_irq[i]) {
DBG_ERR("Failed to allocate \
msi/x interrupt resource\n");
return PQI_STATUS_FAILURE;
}
softs->os_specific.msi_ctx[i].pqi_dev = dev;
softs->os_specific.msi_ctx[i].oq_id = i;
error = bus_setup_intr(dev,
softs->os_specific.pqi_irq[i],
INTR_TYPE_CAM | INTR_MPSAFE,\
NULL,
common_ithread_routine,
&softs->os_specific.msi_ctx[i],
&softs->os_specific.intrcookie[i]);
if (error) {
DBG_ERR("Failed to setup \
msi/x interrupt error = %d\n", error);
return error;
}
softs->os_specific.intr_registered[i] = TRUE;
}
}
DBG_FUNC("OUT error = %d\n", error);
return error;
}
/*
* Setup interrupt depending on the configuration
*/
int os_setup_intr(pqisrc_softstate_t *softs)
{
int error = 0;
DBG_FUNC("IN\n");
if (softs->intr_type == INTR_TYPE_FIXED) {
error = register_legacy_intr(softs);
}
else {
error = register_msix_intr(softs);
}
if (error) {
DBG_FUNC("OUT failed error = %d\n", error);
return error;
}
DBG_FUNC("OUT error = %d\n", error);
return error;
}
/*
* Deregistration of legacy interrupt
*/
void deregister_pqi_intx(pqisrc_softstate_t *softs)
{
device_t dev;
DBG_FUNC("IN\n");
dev = softs->os_specific.pqi_dev;
if (softs->os_specific.pqi_irq[0] != NULL) {
if (softs->os_specific.intr_registered[0]) {
bus_teardown_intr(dev, softs->os_specific.pqi_irq[0],
softs->os_specific.intrcookie[0]);
softs->os_specific.intr_registered[0] = FALSE;
}
bus_release_resource(dev, SYS_RES_IRQ,
softs->os_specific.pqi_irq_rid[0],
softs->os_specific.pqi_irq[0]);
softs->os_specific.pqi_irq[0] = NULL;
os_mem_free(softs, (char*)softs->os_specific.msi_ctx, sizeof(pqi_intr_ctx_t));
}
DBG_FUNC("OUT\n");
}
/*
* Deregistration of MSIx interrupt
*/
void deregister_pqi_msix(pqisrc_softstate_t *softs)
{
device_t dev;
dev = softs->os_specific.pqi_dev;
int msix_count = softs->intr_count;
int i = 0;
DBG_FUNC("IN\n");
os_mem_free(softs, (char*)softs->os_specific.msi_ctx, sizeof(pqi_intr_ctx_t) * msix_count);
softs->os_specific.msi_ctx = NULL;
for (; i < msix_count; ++i) {
if (softs->os_specific.pqi_irq[i] != NULL) {
if (softs->os_specific.intr_registered[i]) {
bus_teardown_intr(dev,
softs->os_specific.pqi_irq[i],
softs->os_specific.intrcookie[i]);
softs->os_specific.intr_registered[i] = FALSE;
}
bus_release_resource(dev, SYS_RES_IRQ,
softs->os_specific.pqi_irq_rid[i],
softs->os_specific.pqi_irq[i]);
softs->os_specific.pqi_irq[i] = NULL;
}
}
DBG_FUNC("OUT\n");
}
/*
* Function to destroy interrupts registered
*/
int os_destroy_intr(pqisrc_softstate_t *softs)
{
device_t dev;
dev = softs->os_specific.pqi_dev;
DBG_FUNC("IN\n");
if (softs->intr_type == INTR_TYPE_FIXED) {
deregister_pqi_intx(softs);
} else if (softs->intr_type == INTR_TYPE_MSIX) {
deregister_pqi_msix(softs);
}
if (softs->os_specific.msi_enabled) {
pci_release_msi(dev);
softs->os_specific.msi_enabled = FALSE;
}
DBG_FUNC("OUT\n");
return PQI_STATUS_SUCCESS;
}
/*
* Free interrupt related resources for the adapter
*/
void os_free_intr_config(pqisrc_softstate_t *softs)
{
device_t dev;
dev = softs->os_specific.pqi_dev;
DBG_FUNC("IN\n");
if (softs->os_specific.msi_enabled) {
pci_release_msi(dev);
softs->os_specific.msi_enabled = FALSE;
}
DBG_FUNC("OUT\n");
}
