Differential D29584 Diff 89548 sys/dev/smartpqi/smartpqi_intr.c

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sys/dev/smartpqi/smartpqi_intr.c

/*-		/*-
* Copyright (c) 2018 Microsemi Corporation.		* Copyright 2016-2021 Microchip Technology, Inc. and/or its subsidiaries.
* All rights reserved.
*		*
* Redistribution and use in source and binary forms, with or without		* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions		* modification, are permitted provided that the following conditions
* are met:		* are met:
* 1. Redistributions of source code must retain the above copyright		* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.		* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright		* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the		* notice, this list of conditions and the following disclaimer in the
Show All 14 Lines

/* $FreeBSD$ */		/* $FreeBSD$ */

#include "smartpqi_includes.h"		#include "smartpqi_includes.h"

/*		/*
* Function to get processor count		* Function to get processor count
*/		*/
int os_get_processor_config(pqisrc_softstate_t *softs)		int
		os_get_processor_config(pqisrc_softstate_t *softs)
{		{
DBG_FUNC("IN\n");		DBG_FUNC("IN\n");
softs->num_cpus_online = mp_ncpus;		softs->num_cpus_online = mp_ncpus;
DBG_FUNC("OUT\n");		DBG_FUNC("OUT\n");

return PQI_STATUS_SUCCESS;		return PQI_STATUS_SUCCESS;
}		}

/*		/*
* Function to get interrupt count and type supported		* Function to get interrupt count and type supported
*/		*/
int os_get_intr_config(pqisrc_softstate_t *softs)		int
		os_get_intr_config(pqisrc_softstate_t *softs)
{		{
device_t dev;		device_t dev = softs->os_specific.pqi_dev;
int msi_count = 0;		int msi_count = pci_msix_count(dev);
int error = 0;		int error = BSD_SUCCESS;
int ret = PQI_STATUS_SUCCESS;
dev = softs->os_specific.pqi_dev;

DBG_FUNC("IN\n");		DBG_FUNC("IN\n");

msi_count = pci_msix_count(dev);

if (msi_count > softs->num_cpus_online)		if (msi_count > softs->num_cpus_online)
msi_count = softs->num_cpus_online;		msi_count = softs->num_cpus_online;
if (msi_count > PQI_MAX_MSIX)		if (msi_count > PQI_MAX_MSIX)
msi_count = PQI_MAX_MSIX;		msi_count = PQI_MAX_MSIX;
if (msi_count == 0 \|\| (error = pci_alloc_msix(dev, &msi_count)) != 0) {		if (msi_count == 0 \|\| (error = pci_alloc_msix(dev, &msi_count)) != 0) {
device_printf(dev, "alloc msix failed - msi_count=%d, err=%d; "		device_printf(dev, "alloc msix failed - msi_count=%d, err=%d; "
"will try MSI\n", msi_count, error);		"will try MSI\n", msi_count, error);
pci_release_msi(dev);		pci_release_msi(dev);
Show All 19 Lines	os_get_intr_config(pqisrc_softstate_t *softs)
}		}

if (!softs->intr_type) {		if (!softs->intr_type) {
device_printf(dev, "using legacy interrupts\n");		device_printf(dev, "using legacy interrupts\n");
softs->intr_type = INTR_TYPE_FIXED;		softs->intr_type = INTR_TYPE_FIXED;
softs->intr_count = 1;		softs->intr_count = 1;
}		}

if(!softs->intr_type) {
DBG_FUNC("OUT failed\n");
ret = PQI_STATUS_FAILURE;
return ret;
}
DBG_FUNC("OUT\n");		DBG_FUNC("OUT\n");
return ret;
		error = bsd_status_to_pqi_status(BSD_SUCCESS);

		return error;
}		}

void os_eventtaskqueue_enqueue(pqisrc_softstate_t *sc)		void
		os_eventtaskqueue_enqueue(pqisrc_softstate_t *sc)
{		{
taskqueue_enqueue(taskqueue_swi, &sc->os_specific.event_task);		taskqueue_enqueue(taskqueue_swi, &sc->os_specific.event_task);
}		}

void pqisrc_event_worker(void *arg1, int arg2)		void
		pqisrc_event_worker(void *arg1, int arg2)
{		{
pqisrc_ack_all_events(arg1);		pqisrc_ack_all_events(arg1);
}		}

/*		/*
* ithread routine to handle uniprocessor systems		* ithread routine to handle uniprocessor systems
*/		*/
static void shared_ithread_routine(void *arg)		static void
		shared_ithread_routine(void *arg)
{		{
pqi_intr_ctx_t intr_ctx = (pqi_intr_ctx_t )arg;		pqi_intr_ctx_t intr_ctx = (pqi_intr_ctx_t )arg;
pqisrc_softstate_t *softs = device_get_softc(intr_ctx->pqi_dev);		pqisrc_softstate_t *softs = device_get_softc(intr_ctx->pqi_dev);
int oq_id = intr_ctx->oq_id;		int oq_id = intr_ctx->oq_id;

DBG_FUNC("IN\n");		DBG_FUNC("IN\n");

		if (softs == NULL)
		return;

pqisrc_process_response_queue(softs, oq_id);		pqisrc_process_response_queue(softs, oq_id);
pqisrc_process_event_intr_src(softs, oq_id - 1);		pqisrc_process_event_intr_src(softs, oq_id - 1);

DBG_FUNC("OUT\n");		DBG_FUNC("OUT\n");
}		}

/*		/*
* ithread routine to process non event response		* ithread routine to process non event response
*/		*/
static void common_ithread_routine(void *arg)		static void
		common_ithread_routine(void *arg)
{		{
pqi_intr_ctx_t intr_ctx = (pqi_intr_ctx_t )arg;		pqi_intr_ctx_t intr_ctx = (pqi_intr_ctx_t )arg;
pqisrc_softstate_t *softs = device_get_softc(intr_ctx->pqi_dev);		pqisrc_softstate_t *softs = device_get_softc(intr_ctx->pqi_dev);
int oq_id = intr_ctx->oq_id;		int oq_id = intr_ctx->oq_id;

DBG_FUNC("IN\n");		DBG_FUNC("IN\n");

		if (softs == NULL)
		return;

pqisrc_process_response_queue(softs, oq_id);		pqisrc_process_response_queue(softs, oq_id);

DBG_FUNC("OUT\n");		DBG_FUNC("OUT\n");
}		}

static void event_ithread_routine(void *arg)		static void
		event_ithread_routine(void *arg)
{		{
pqi_intr_ctx_t intr_ctx = (pqi_intr_ctx_t )arg;		pqi_intr_ctx_t intr_ctx = (pqi_intr_ctx_t )arg;
pqisrc_softstate_t *softs = device_get_softc(intr_ctx->pqi_dev);		pqisrc_softstate_t *softs = device_get_softc(intr_ctx->pqi_dev);
int oq_id = intr_ctx->oq_id;		int oq_id = intr_ctx->oq_id;

DBG_FUNC("IN\n");		DBG_FUNC("IN\n");

		if (softs == NULL)
		return;

pqisrc_process_event_intr_src(softs, oq_id);		pqisrc_process_event_intr_src(softs, oq_id);

DBG_FUNC("OUT\n");		DBG_FUNC("OUT\n");
}		}

/*		/*
* Registration of legacy interrupt in case MSI is unsupported		* Registration of legacy interrupt in case MSI is unsupported
*/		*/
int register_legacy_intr(pqisrc_softstate_t *softs)		int
		register_legacy_intr(pqisrc_softstate_t *softs)
{		{
int error = 0;		int error = BSD_SUCCESS;
device_t dev;		device_t dev = softs->os_specific.pqi_dev;

DBG_FUNC("IN\n");		DBG_FUNC("IN\n");

dev = softs->os_specific.pqi_dev;

softs->os_specific.pqi_irq_rid[0] = 0;		softs->os_specific.pqi_irq_rid[0] = 0;
softs->os_specific.pqi_irq[0] = bus_alloc_resource_any(dev, \		softs->os_specific.pqi_irq[0] = bus_alloc_resource_any(dev, \
SYS_RES_IRQ, &softs->os_specific.pqi_irq_rid[0],		SYS_RES_IRQ, &softs->os_specific.pqi_irq_rid[0],
RF_ACTIVE \| RF_SHAREABLE);		RF_ACTIVE \| RF_SHAREABLE);
if (NULL == softs->os_specific.pqi_irq[0]) {		if (NULL == softs->os_specific.pqi_irq[0]) {
DBG_ERR("Failed to allocate resource for interrupt\n");		DBG_ERR("Failed to allocate resource for interrupt\n");
return PQI_STATUS_FAILURE;		return ENXIO;
}		}
if ((softs->os_specific.msi_ctx = os_mem_alloc(softs,sizeof(pqi_intr_ctx_t))) == NULL) {		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");		DBG_ERR("Failed to allocate memory for msi_ctx\n");
return PQI_STATUS_FAILURE;		return ENXIO;
}		}
softs->os_specific.msi_ctx[0].pqi_dev = dev;		softs->os_specific.msi_ctx[0].pqi_dev = dev;
		/* For Legacy support oq_id should be one */
softs->os_specific.msi_ctx[0].oq_id = 1;		softs->os_specific.msi_ctx[0].oq_id = 1;

error = bus_setup_intr(dev, softs->os_specific.pqi_irq[0],		error = bus_setup_intr(dev, softs->os_specific.pqi_irq[0],
INTR_TYPE_CAM \| INTR_MPSAFE, \		INTR_TYPE_CAM \| INTR_MPSAFE, \
NULL, shared_ithread_routine,		NULL, shared_ithread_routine,
&softs->os_specific.msi_ctx[0],		&softs->os_specific.msi_ctx[0],
&softs->os_specific.intrcookie[0]);		&softs->os_specific.intrcookie[0]);
if (error) {		if (error) {
DBG_ERR("Failed to setup legacy interrupt err = %d\n", error);		DBG_ERR("Failed to setup legacy interrupt err = %d\n", error);
return error;		return error;
}		}
softs->os_specific.intr_registered[0] = TRUE;		softs->os_specific.intr_registered[0] = TRUE;

DBG_FUNC("OUT error = %d\n", error);		DBG_FUNC("OUT error = %d\n", error);

return error;		return error;
}		}

/*		/*
* Registration of MSIx		* Registration of MSIx
*/		*/
int register_msix_intr(pqisrc_softstate_t *softs)		int
		register_msix_intr(pqisrc_softstate_t *softs)
{		{
int error = 0;		int error = BSD_SUCCESS;
int i = 0;		int i = 0;
device_t dev;		device_t dev = softs->os_specific.pqi_dev;
dev = softs->os_specific.pqi_dev;
int msix_count = softs->intr_count;		int msix_count = softs->intr_count;

DBG_FUNC("IN\n");		DBG_FUNC("IN\n");

softs->os_specific.msi_ctx = os_mem_alloc(softs, sizeof(pqi_intr_ctx_t) * msix_count);		softs->os_specific.msi_ctx = os_mem_alloc(softs, sizeof(pqi_intr_ctx_t) * msix_count);
		if (!softs->os_specific.msi_ctx) {
		DBG_ERR("Memory allocation failed\n");
		return ENXIO;
		}

/Add shared handler /		/Add shared handler /
if (softs->share_opq_and_eventq) {		if (softs->share_opq_and_eventq) {
softs->os_specific.pqi_irq_rid[i] = i+1;		softs->os_specific.pqi_irq_rid[i] = i+1;
softs->os_specific.pqi_irq[i] = bus_alloc_resource_any(dev, \		softs->os_specific.pqi_irq[i] = bus_alloc_resource_any(dev, \
SYS_RES_IRQ,		SYS_RES_IRQ,
&softs->os_specific.pqi_irq_rid[i],		&softs->os_specific.pqi_irq_rid[i],
RF_SHAREABLE \| RF_ACTIVE);		RF_SHAREABLE \| RF_ACTIVE);
if (NULL == softs->os_specific.pqi_irq[i]) {		if (NULL == softs->os_specific.pqi_irq[i]) {
DBG_ERR("Failed to allocate \		DBG_ERR("Failed to allocate \
event interrupt resource\n");		event interrupt resource\n");
return PQI_STATUS_FAILURE;		return ENXIO;
}		}

softs->os_specific.msi_ctx[i].pqi_dev = dev;		softs->os_specific.msi_ctx[i].pqi_dev = dev;
softs->os_specific.msi_ctx[i].oq_id = i+1;		softs->os_specific.msi_ctx[i].oq_id = i+1;

error = bus_setup_intr(dev,softs->os_specific.pqi_irq[i],		error = bus_setup_intr(dev,softs->os_specific.pqi_irq[i],
INTR_TYPE_CAM \| INTR_MPSAFE,\		INTR_TYPE_CAM \| INTR_MPSAFE,\
NULL,		NULL,
shared_ithread_routine,		shared_ithread_routine,
&softs->os_specific.msi_ctx[i],		&softs->os_specific.msi_ctx[i],
&softs->os_specific.intrcookie[i]);		&softs->os_specific.intrcookie[i]);

if (error) {		if (error) {
DBG_ERR("Failed to setup interrupt for events r=%d\n",		DBG_ERR("Failed to setup interrupt for events r=%d\n",
error);		error);
return error;		return error;
}		}
softs->os_specific.intr_registered[i] = TRUE;		softs->os_specific.intr_registered[i] = TRUE;
}		}
else {		else {
/* Add event handler */		/* Add event handler */
softs->os_specific.pqi_irq_rid[i] = i+1;		softs->os_specific.pqi_irq_rid[i] = i+1;
softs->os_specific.pqi_irq[i] = bus_alloc_resource_any(dev, \		softs->os_specific.pqi_irq[i] = bus_alloc_resource_any(dev, \
SYS_RES_IRQ,		SYS_RES_IRQ,
&softs->os_specific.pqi_irq_rid[i],		&softs->os_specific.pqi_irq_rid[i],
RF_SHAREABLE \| RF_ACTIVE);		RF_SHAREABLE \| RF_ACTIVE);
if (NULL == softs->os_specific.pqi_irq[i]) {		if (NULL == softs->os_specific.pqi_irq[i]) {
DBG_ERR("ERR : Failed to allocate \		DBG_ERR("Failed to allocate event interrupt resource\n");
event interrupt resource\n");		return ENXIO;
return PQI_STATUS_FAILURE;
}		}


softs->os_specific.msi_ctx[i].pqi_dev = dev;		softs->os_specific.msi_ctx[i].pqi_dev = dev;
softs->os_specific.msi_ctx[i].oq_id = i;		softs->os_specific.msi_ctx[i].oq_id = i;


error = bus_setup_intr(dev,softs->os_specific.pqi_irq[i],		error = bus_setup_intr(dev,softs->os_specific.pqi_irq[i],
INTR_TYPE_CAM \| INTR_MPSAFE,\		INTR_TYPE_CAM \| INTR_MPSAFE,\
NULL,		NULL,
event_ithread_routine,		event_ithread_routine,
&softs->os_specific.msi_ctx[i],		&softs->os_specific.msi_ctx[i],
&softs->os_specific.intrcookie[i]);		&softs->os_specific.intrcookie[i]);
if (error) {		if (error) {
DBG_ERR("Failed to setup interrupt for events err=%d\n",		DBG_ERR("Failed to setup interrupt for events err=%d\n",
error);		error);
return error;		return error;
}		}
softs->os_specific.intr_registered[i] = TRUE;		softs->os_specific.intr_registered[i] = TRUE;
/* Add interrupt handlers*/		/* Add interrupt handlers*/
for (i = 1; i < msix_count; ++i) {		for (i = 1; i < msix_count; ++i) {
softs->os_specific.pqi_irq_rid[i] = i+1;		softs->os_specific.pqi_irq_rid[i] = i+1;
softs->os_specific.pqi_irq[i] = \		softs->os_specific.pqi_irq[i] = \
bus_alloc_resource_any(dev,		bus_alloc_resource_any(dev,
SYS_RES_IRQ,		SYS_RES_IRQ,
&softs->os_specific.pqi_irq_rid[i],		&softs->os_specific.pqi_irq_rid[i],
RF_SHAREABLE \| RF_ACTIVE);		RF_SHAREABLE \| RF_ACTIVE);
if (NULL == softs->os_specific.pqi_irq[i]) {		if (NULL == softs->os_specific.pqi_irq[i]) {
DBG_ERR("Failed to allocate \		DBG_ERR("Failed to allocate \
msi/x interrupt resource\n");		msi/x interrupt resource\n");
return PQI_STATUS_FAILURE;		return ENXIO;
}		}
softs->os_specific.msi_ctx[i].pqi_dev = dev;		softs->os_specific.msi_ctx[i].pqi_dev = dev;
softs->os_specific.msi_ctx[i].oq_id = i;		softs->os_specific.msi_ctx[i].oq_id = i;
error = bus_setup_intr(dev,		error = bus_setup_intr(dev,
softs->os_specific.pqi_irq[i],		softs->os_specific.pqi_irq[i],
INTR_TYPE_CAM \| INTR_MPSAFE,\		INTR_TYPE_CAM \| INTR_MPSAFE,\
NULL,		NULL,
common_ithread_routine,		common_ithread_routine,
Show All 11 Lines	register_msix_intr(pqisrc_softstate_t *softs)
DBG_FUNC("OUT error = %d\n", error);		DBG_FUNC("OUT error = %d\n", error);

return error;		return error;
}		}

/*		/*
* Setup interrupt depending on the configuration		* Setup interrupt depending on the configuration
*/		*/
int os_setup_intr(pqisrc_softstate_t *softs)		int
		os_setup_intr(pqisrc_softstate_t *softs)
{		{
int error = 0;		int bsd_status, pqi_status;

DBG_FUNC("IN\n");		DBG_FUNC("IN\n");

if (softs->intr_type == INTR_TYPE_FIXED) {		if (softs->intr_type == INTR_TYPE_FIXED) {
error = register_legacy_intr(softs);		bsd_status = register_legacy_intr(softs);
}		}
else {		else {
error = register_msix_intr(softs);		bsd_status = register_msix_intr(softs);
}		}
if (error) {
DBG_FUNC("OUT failed error = %d\n", error);
return error;
}

DBG_FUNC("OUT error = %d\n", error);		if(bsd_status)
		DBG_WARN("interrupt registration is failed, error = %d\n", bsd_status);

return error;		pqi_status = bsd_status_to_pqi_status(bsd_status);

		DBG_FUNC("OUT\n");

		return pqi_status;
}		}

/*		/*
* Deregistration of legacy interrupt		* Deregistration of legacy interrupt
*/		*/
void deregister_pqi_intx(pqisrc_softstate_t *softs)		void
		deregister_pqi_intx(pqisrc_softstate_t *softs)
{		{
device_t dev;		device_t dev = softs->os_specific.pqi_dev;

DBG_FUNC("IN\n");		DBG_FUNC("IN\n");

dev = softs->os_specific.pqi_dev;
if (softs->os_specific.pqi_irq[0] != NULL) {		if (softs->os_specific.pqi_irq[0] != NULL) {
if (softs->os_specific.intr_registered[0]) {		if (softs->os_specific.intr_registered[0]) {
bus_teardown_intr(dev, softs->os_specific.pqi_irq[0],		bus_teardown_intr(dev, softs->os_specific.pqi_irq[0],
softs->os_specific.intrcookie[0]);		softs->os_specific.intrcookie[0]);
softs->os_specific.intr_registered[0] = FALSE;		softs->os_specific.intr_registered[0] = FALSE;
}		}
bus_release_resource(dev, SYS_RES_IRQ,		bus_release_resource(dev, SYS_RES_IRQ,
softs->os_specific.pqi_irq_rid[0],		softs->os_specific.pqi_irq_rid[0],
softs->os_specific.pqi_irq[0]);		softs->os_specific.pqi_irq[0]);
softs->os_specific.pqi_irq[0] = NULL;		softs->os_specific.pqi_irq[0] = NULL;
os_mem_free(softs, (char*)softs->os_specific.msi_ctx, sizeof(pqi_intr_ctx_t));		os_mem_free(softs, (char*)softs->os_specific.msi_ctx, sizeof(pqi_intr_ctx_t));
}		}

DBG_FUNC("OUT\n");		DBG_FUNC("OUT\n");
}		}

/*		/*
* Deregistration of MSIx interrupt		* Deregistration of MSIx interrupt
*/		*/
void deregister_pqi_msix(pqisrc_softstate_t *softs)		void
		deregister_pqi_msix(pqisrc_softstate_t *softs)
{		{
device_t dev;		device_t dev = softs->os_specific.pqi_dev;
dev = softs->os_specific.pqi_dev;
int msix_count = softs->intr_count;		int msix_count = softs->intr_count;
int i = 0;		int i = 0;

DBG_FUNC("IN\n");		DBG_FUNC("IN\n");

os_mem_free(softs, (char)softs->os_specific.msi_ctx, sizeof(pqi_intr_ctx_t) msix_count);		os_mem_free(softs, (char)softs->os_specific.msi_ctx, sizeof(pqi_intr_ctx_t) msix_count);
softs->os_specific.msi_ctx = NULL;		softs->os_specific.msi_ctx = NULL;

Show All 13 Lines	deregister_pqi_msix(pqisrc_softstate_t *softs)
}		}

DBG_FUNC("OUT\n");		DBG_FUNC("OUT\n");
}		}

/*		/*
* Function to destroy interrupts registered		* Function to destroy interrupts registered
*/		*/
int os_destroy_intr(pqisrc_softstate_t *softs)		int
		os_destroy_intr(pqisrc_softstate_t *softs)
{		{
device_t dev;		device_t dev = softs->os_specific.pqi_dev;
dev = softs->os_specific.pqi_dev;

DBG_FUNC("IN\n");		DBG_FUNC("IN\n");

if (softs->intr_type == INTR_TYPE_FIXED) {		if (softs->intr_type == INTR_TYPE_FIXED) {
deregister_pqi_intx(softs);		deregister_pqi_intx(softs);
} else if (softs->intr_type == INTR_TYPE_MSIX) {		} else if (softs->intr_type == INTR_TYPE_MSIX) {
deregister_pqi_msix(softs);		deregister_pqi_msix(softs);
}		}
if (softs->os_specific.msi_enabled) {		if (softs->os_specific.msi_enabled) {
pci_release_msi(dev);		pci_release_msi(dev);
softs->os_specific.msi_enabled = FALSE;		softs->os_specific.msi_enabled = FALSE;
}		}

DBG_FUNC("OUT\n");		DBG_FUNC("OUT\n");

return PQI_STATUS_SUCCESS;		return PQI_STATUS_SUCCESS;
}		}

/*		/*
* Free interrupt related resources for the adapter		* Free interrupt related resources for the adapter
*/		*/
void os_free_intr_config(pqisrc_softstate_t *softs)		void
		os_free_intr_config(pqisrc_softstate_t *softs)
{		{
device_t dev;		device_t dev = softs->os_specific.pqi_dev;
dev = softs->os_specific.pqi_dev;

DBG_FUNC("IN\n");		DBG_FUNC("IN\n");

if (softs->os_specific.msi_enabled) {		if (softs->os_specific.msi_enabled) {
pci_release_msi(dev);		pci_release_msi(dev);
softs->os_specific.msi_enabled = FALSE;		softs->os_specific.msi_enabled = FALSE;
}		}

DBG_FUNC("OUT\n");		DBG_FUNC("OUT\n");
}		}