4915e5c719
Approved by: mav MFC after: 3 weeks
964 lines
24 KiB
C
964 lines
24 KiB
C
/*-
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* Copyright (c) 2017 Broadcom. All rights reserved.
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* The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#define OCS_COPYRIGHT "Copyright (C) 2017 Broadcom. All rights reserved."
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/**
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* @file
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* Implementation of required FreeBSD PCI interface functions
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*/
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#include "ocs.h"
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#include "version.h"
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#include <sys/sysctl.h>
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#include <sys/malloc.h>
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static MALLOC_DEFINE(M_OCS, "OCS", "OneCore Storage data");
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <machine/bus.h>
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/**
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* Tunable parameters for transport
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*/
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int logmask = 0;
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int ctrlmask = 2;
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int logdest = 1;
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int loglevel = LOG_INFO;
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int ramlog_size = 1*1024*1024;
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int ddump_saved_size = 0;
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static const char *queue_topology = "eq cq rq cq mq $nulp($nwq(cq wq:ulp=$rpt1)) cq wq:len=256:class=1";
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static void ocs_release_bus(struct ocs_softc *);
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static int32_t ocs_intr_alloc(struct ocs_softc *);
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static int32_t ocs_intr_setup(struct ocs_softc *);
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static int32_t ocs_intr_teardown(struct ocs_softc *);
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static int ocs_pci_intx_filter(void *);
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static void ocs_pci_intr(void *);
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static int32_t ocs_init_dma_tag(struct ocs_softc *ocs);
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static int32_t ocs_setup_fcports(ocs_t *ocs);
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ocs_t *ocs_devices[MAX_OCS_DEVICES];
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/**
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* @brief Check support for the given device
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*
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* Determine support for a given device by examining the PCI vendor and
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* device IDs
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*
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* @param dev device abstraction
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*
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* @return 0 if device is supported, ENXIO otherwise
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*/
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static int
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ocs_pci_probe(device_t dev)
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{
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char *desc = NULL;
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if (pci_get_vendor(dev) != PCI_VENDOR_EMULEX) {
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return ENXIO;
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}
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switch (pci_get_device(dev)) {
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case PCI_PRODUCT_EMULEX_OCE16001:
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desc = "Emulex LightPulse FC Adapter";
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break;
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case PCI_PRODUCT_EMULEX_LPE31004:
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desc = "Emulex LightPulse FC Adapter";
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break;
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case PCI_PRODUCT_EMULEX_OCE50102:
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desc = "Emulex LightPulse 10GbE FCoE/NIC Adapter";
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break;
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default:
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return ENXIO;
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}
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device_set_desc(dev, desc);
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return BUS_PROBE_DEFAULT;
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}
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static int
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ocs_map_bars(device_t dev, struct ocs_softc *ocs)
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{
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/*
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* Map PCI BAR0 register into the CPU's space.
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*/
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ocs->reg[0].rid = PCIR_BAR(PCI_64BIT_BAR0);
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ocs->reg[0].res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&ocs->reg[0].rid, RF_ACTIVE);
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if (ocs->reg[0].res == NULL) {
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device_printf(dev, "bus_alloc_resource failed rid=%#x\n",
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ocs->reg[0].rid);
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return ENXIO;
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}
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ocs->reg[0].btag = rman_get_bustag(ocs->reg[0].res);
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ocs->reg[0].bhandle = rman_get_bushandle(ocs->reg[0].res);
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return 0;
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}
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static int
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ocs_setup_params(struct ocs_softc *ocs)
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{
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int32_t i = 0;
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const char *hw_war_version;
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/* Setup tunable parameters */
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ocs->ctrlmask = ctrlmask;
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ocs->speed = 0;
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ocs->topology = 0;
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ocs->ethernet_license = 0;
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ocs->num_scsi_ios = 8192;
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ocs->enable_hlm = 0;
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ocs->hlm_group_size = 8;
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ocs->logmask = logmask;
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ocs->config_tgt = FALSE;
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"target", &i)) {
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if (1 == i) {
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ocs->config_tgt = TRUE;
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device_printf(ocs->dev, "Enabling target\n");
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}
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}
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ocs->config_ini = TRUE;
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"initiator", &i)) {
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if (0 == i) {
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ocs->config_ini = FALSE;
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device_printf(ocs->dev, "Disabling initiator\n");
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}
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}
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ocs->enable_ini = ocs->config_ini;
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if (!ocs->config_ini && !ocs->config_tgt) {
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device_printf(ocs->dev, "Unsupported, both initiator and target mode disabled.\n");
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return 1;
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}
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"logmask", &logmask)) {
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device_printf(ocs->dev, "logmask = %#x\n", logmask);
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}
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"logdest", &logdest)) {
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device_printf(ocs->dev, "logdest = %#x\n", logdest);
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}
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"loglevel", &loglevel)) {
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device_printf(ocs->dev, "loglevel = %#x\n", loglevel);
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}
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"ramlog_size", &ramlog_size)) {
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device_printf(ocs->dev, "ramlog_size = %#x\n", ramlog_size);
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}
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"ddump_saved_size", &ddump_saved_size)) {
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device_printf(ocs->dev, "ddump_saved_size= %#x\n", ddump_saved_size);
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}
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/* If enabled, initailize a RAM logging buffer */
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if (logdest & 2) {
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ocs->ramlog = ocs_ramlog_init(ocs, ramlog_size/OCS_RAMLOG_DEFAULT_BUFFERS,
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OCS_RAMLOG_DEFAULT_BUFFERS);
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/* If NULL was returned, then we'll simply skip using the ramlog but */
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/* set logdest to 1 to ensure that we at least get default logging. */
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if (ocs->ramlog == NULL) {
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logdest = 1;
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}
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}
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/* initialize a saved ddump */
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if (ddump_saved_size) {
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if (ocs_textbuf_alloc(ocs, &ocs->ddump_saved, ddump_saved_size)) {
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ocs_log_err(ocs, "failed to allocate memory for saved ddump\n");
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}
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}
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if (0 == resource_string_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"hw_war_version", &hw_war_version)) {
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device_printf(ocs->dev, "hw_war_version = %s\n", hw_war_version);
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ocs->hw_war_version = strdup(hw_war_version, M_OCS);
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}
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"explicit_buffer_list", &i)) {
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ocs->explicit_buffer_list = i;
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}
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"ethernet_license", &i)) {
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ocs->ethernet_license = i;
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}
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"speed", &i)) {
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device_printf(ocs->dev, "speed = %d Mbps\n", i);
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ocs->speed = i;
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}
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ocs->desc = device_get_desc(ocs->dev);
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ocs_device_lock_init(ocs);
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ocs->driver_version = STR_BE_MAJOR "." STR_BE_MINOR "." STR_BE_BUILD "." STR_BE_BRANCH;
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ocs->model = ocs_pci_model(ocs->pci_vendor, ocs->pci_device);
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"enable_hlm", &i)) {
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device_printf(ocs->dev, "enable_hlm = %d\n", i);
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ocs->enable_hlm = i;
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if (ocs->enable_hlm) {
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ocs->hlm_group_size = 8;
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"hlm_group_size", &i)) {
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ocs->hlm_group_size = i;
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}
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device_printf(ocs->dev, "hlm_group_size = %d\n", i);
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}
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}
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"num_scsi_ios", &i)) {
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ocs->num_scsi_ios = i;
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device_printf(ocs->dev, "num_scsi_ios = %d\n", ocs->num_scsi_ios);
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} else {
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ocs->num_scsi_ios = 8192;
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}
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"topology", &i)) {
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ocs->topology = i;
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device_printf(ocs->dev, "Setting topology=%#x\n", i);
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}
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"num_vports", &i)) {
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if (i >= 0 && i <= 254) {
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device_printf(ocs->dev, "num_vports = %d\n", i);
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ocs->num_vports = i;
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} else {
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device_printf(ocs->dev, "num_vports: %d not supported \n", i);
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}
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}
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"external_loopback", &i)) {
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device_printf(ocs->dev, "external_loopback = %d\n", i);
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ocs->external_loopback = i;
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}
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"tgt_rscn_delay", &i)) {
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device_printf(ocs->dev, "tgt_rscn_delay = %d\n", i);
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ocs->tgt_rscn_delay_msec = i * 1000;
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}
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"tgt_rscn_period", &i)) {
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device_printf(ocs->dev, "tgt_rscn_period = %d\n", i);
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ocs->tgt_rscn_period_msec = i * 1000;
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}
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if (0 == resource_int_value(device_get_name(ocs->dev), device_get_unit(ocs->dev),
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"target_io_timer", &i)) {
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device_printf(ocs->dev, "target_io_timer = %d\n", i);
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ocs->target_io_timer_sec = i;
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}
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hw_global.queue_topology_string = queue_topology;
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ocs->rq_selection_policy = 0;
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ocs->rr_quanta = 1;
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ocs->filter_def = "0,0,0,0";
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return 0;
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}
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static int32_t
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ocs_setup_fcports(ocs_t *ocs)
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{
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uint32_t i = 0, role = 0;
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uint64_t sli_wwpn, sli_wwnn;
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size_t size;
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ocs_xport_t *xport = ocs->xport;
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ocs_vport_spec_t *vport;
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ocs_fcport *fcp = NULL;
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size = sizeof(ocs_fcport) * (ocs->num_vports + 1);
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ocs->fcports = ocs_malloc(ocs, size, M_ZERO|M_NOWAIT);
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if (ocs->fcports == NULL) {
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device_printf(ocs->dev, "Can't allocate fcport \n");
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return 1;
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}
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role = (ocs->enable_ini)? KNOB_ROLE_INITIATOR: 0 |
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(ocs->enable_tgt)? KNOB_ROLE_TARGET: 0;
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fcp = FCPORT(ocs, i);
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fcp->role = role;
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i++;
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ocs_list_foreach(&xport->vport_list, vport) {
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fcp = FCPORT(ocs, i);
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vport->tgt_data = fcp;
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fcp->vport = vport;
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fcp->role = role;
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if (ocs_hw_get_def_wwn(ocs, i, &sli_wwpn, &sli_wwnn)) {
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ocs_log_err(ocs, "Get default wwn failed \n");
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i++;
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continue;
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}
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vport->wwpn = ocs_be64toh(sli_wwpn);
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vport->wwnn = ocs_be64toh(sli_wwnn);
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i++;
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ocs_log_debug(ocs, "VPort wwpn: %lx wwnn: %lx \n", vport->wwpn, vport->wwnn);
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}
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return 0;
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}
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int32_t
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ocs_device_attach(ocs_t *ocs)
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{
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int32_t i;
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ocs_io_t *io = NULL;
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if (ocs->attached) {
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ocs_log_warn(ocs, "%s: Device is already attached\n", __func__);
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return -1;
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}
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/* Allocate transport object and bring online */
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ocs->xport = ocs_xport_alloc(ocs);
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if (ocs->xport == NULL) {
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device_printf(ocs->dev, "failed to allocate transport object\n");
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return ENOMEM;
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} else if (ocs_xport_attach(ocs->xport) != 0) {
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device_printf(ocs->dev, "%s: failed to attach transport object\n", __func__);
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goto fail_xport_attach;
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} else if (ocs_xport_initialize(ocs->xport) != 0) {
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device_printf(ocs->dev, "%s: failed to initialize transport object\n", __func__);
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goto fail_xport_init;
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}
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if (ocs_init_dma_tag(ocs)) {
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goto fail_intr_setup;
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}
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for (i = 0; (io = ocs_io_get_instance(ocs, i)); i++) {
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if (bus_dmamap_create(ocs->buf_dmat, 0, &io->tgt_io.dmap)) {
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device_printf(ocs->dev, "%s: bad dma map create\n", __func__);
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}
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io->tgt_io.state = OCS_CAM_IO_FREE;
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}
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if (ocs_setup_fcports(ocs)) {
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device_printf(ocs->dev, "FCports creation failed\n");
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goto fail_intr_setup;
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}
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if(ocs_cam_attach(ocs)) {
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device_printf(ocs->dev, "cam attach failed \n");
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goto fail_intr_setup;
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}
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if (ocs_intr_setup(ocs)) {
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device_printf(ocs->dev, "Interrupt setup failed\n");
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goto fail_intr_setup;
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}
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if (ocs->enable_ini || ocs->enable_tgt) {
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if (ocs_xport_control(ocs->xport, OCS_XPORT_PORT_ONLINE)) {
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device_printf(ocs->dev, "Can't init port\n");
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goto fail_xport_online;
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}
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}
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ocs->attached = true;
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return 0;
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fail_xport_online:
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if (ocs_xport_control(ocs->xport, OCS_XPORT_SHUTDOWN)) {
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device_printf(ocs->dev, "Transport Shutdown timed out\n");
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}
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ocs_intr_teardown(ocs);
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fail_intr_setup:
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fail_xport_init:
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ocs_xport_detach(ocs->xport);
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if (ocs->config_tgt)
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ocs_scsi_tgt_del_device(ocs);
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ocs_xport_free(ocs->xport);
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ocs->xport = NULL;
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fail_xport_attach:
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if (ocs->xport)
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ocs_free(ocs, ocs->xport, sizeof(*(ocs->xport)));
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ocs->xport = NULL;
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return ENXIO;
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}
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|
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/**
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* @brief Connect the driver to the given device
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*
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* If the probe routine is successful, the OS will give the driver
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* the opportunity to connect itself to the device. This routine
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* maps PCI resources (memory BARs and interrupts) and initialize a
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* hardware object.
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*
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* @param dev device abstraction
|
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*
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* @return 0 if the driver attaches to the device, ENXIO otherwise
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*/
|
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|
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static int
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ocs_pci_attach(device_t dev)
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{
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struct ocs_softc *ocs;
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int instance;
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instance = device_get_unit(dev);
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ocs = (struct ocs_softc *)device_get_softc(dev);
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if (NULL == ocs) {
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device_printf(dev, "cannot allocate softc\n");
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return ENOMEM;
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}
|
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memset(ocs, 0, sizeof(struct ocs_softc));
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|
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if (instance < ARRAY_SIZE(ocs_devices)) {
|
|
ocs_devices[instance] = ocs;
|
|
} else {
|
|
device_printf(dev, "got unexpected ocs instance number %d\n", instance);
|
|
}
|
|
|
|
ocs->instance_index = instance;
|
|
|
|
ocs->dev = dev;
|
|
|
|
pci_enable_io(dev, SYS_RES_MEMORY);
|
|
pci_enable_busmaster(dev);
|
|
|
|
ocs->pci_vendor = pci_get_vendor(dev);
|
|
ocs->pci_device = pci_get_device(dev);
|
|
snprintf(ocs->businfo, sizeof(ocs->businfo), "%02X:%02X:%02X",
|
|
pci_get_bus(dev), pci_get_slot(dev), pci_get_function(dev));
|
|
|
|
/* Map all memory BARs */
|
|
if (ocs_map_bars(dev, ocs)) {
|
|
device_printf(dev, "Failed to map pci bars\n");
|
|
goto release_bus;
|
|
}
|
|
|
|
/* create a root DMA tag for the device */
|
|
if (bus_dma_tag_create(bus_get_dma_tag(dev),
|
|
1, /* byte alignment */
|
|
0, /* no boundary restrictions */
|
|
BUS_SPACE_MAXADDR, /* no minimum low address */
|
|
BUS_SPACE_MAXADDR, /* no maximum high address */
|
|
NULL, /* no filter function */
|
|
NULL, /* or arguments */
|
|
BUS_SPACE_MAXSIZE, /* max size covered by tag */
|
|
BUS_SPACE_UNRESTRICTED, /* no segment count restrictions */
|
|
BUS_SPACE_MAXSIZE, /* no segment length restrictions */
|
|
0, /* flags */
|
|
NULL, /* no lock manipulation function */
|
|
NULL, /* or arguments */
|
|
&ocs->dmat)) {
|
|
device_printf(dev, "parent DMA tag allocation failed\n");
|
|
goto release_bus;
|
|
}
|
|
|
|
if (ocs_intr_alloc(ocs)) {
|
|
device_printf(dev, "Interrupt allocation failed\n");
|
|
goto release_bus;
|
|
}
|
|
|
|
if (PCIC_SERIALBUS == pci_get_class(dev) &&
|
|
PCIS_SERIALBUS_FC == pci_get_subclass(dev))
|
|
ocs->ocs_xport = OCS_XPORT_FC;
|
|
else {
|
|
device_printf(dev, "unsupported class (%#x : %#x)\n",
|
|
pci_get_class(dev),
|
|
pci_get_class(dev));
|
|
goto release_bus;
|
|
}
|
|
|
|
/* Setup tunable parameters */
|
|
if (ocs_setup_params(ocs)) {
|
|
device_printf(ocs->dev, "failed to setup params\n");
|
|
goto release_bus;
|
|
}
|
|
|
|
if (ocs_device_attach(ocs)) {
|
|
device_printf(ocs->dev, "failed to attach device\n");
|
|
goto release_params;
|
|
}
|
|
|
|
ocs->fc_type = FC_TYPE_FCP;
|
|
|
|
ocs_debug_attach(ocs);
|
|
|
|
return 0;
|
|
|
|
release_params:
|
|
ocs_ramlog_free(ocs, ocs->ramlog);
|
|
ocs_device_lock_free(ocs);
|
|
free(ocs->hw_war_version, M_OCS);
|
|
release_bus:
|
|
ocs_release_bus(ocs);
|
|
return ENXIO;
|
|
}
|
|
|
|
/**
|
|
* @brief free resources when pci device detach
|
|
*
|
|
* @param ocs pointer to ocs structure
|
|
*
|
|
* @return 0 for success, a negative error code value for failure.
|
|
*/
|
|
|
|
int32_t
|
|
ocs_device_detach(ocs_t *ocs)
|
|
{
|
|
int32_t rc = 0, i;
|
|
ocs_io_t *io = NULL;
|
|
|
|
if (ocs != NULL) {
|
|
if (!ocs->attached) {
|
|
ocs_log_warn(ocs, "%s: Device is not attached\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
ocs->attached = FALSE;
|
|
|
|
rc = ocs_xport_control(ocs->xport, OCS_XPORT_SHUTDOWN);
|
|
if (rc) {
|
|
ocs_log_err(ocs, "%s: Transport Shutdown timed out\n", __func__);
|
|
}
|
|
|
|
ocs_intr_teardown(ocs);
|
|
|
|
if (ocs_xport_detach(ocs->xport) != 0) {
|
|
ocs_log_err(ocs, "%s: Transport detach failed\n", __func__);
|
|
}
|
|
|
|
ocs_cam_detach(ocs);
|
|
ocs_free(ocs, ocs->fcports, sizeof(*(ocs->fcports)));
|
|
|
|
for (i = 0; (io = ocs_io_get_instance(ocs, i)); i++) {
|
|
if (bus_dmamap_destroy(ocs->buf_dmat, io->tgt_io.dmap)) {
|
|
device_printf(ocs->dev, "%s: bad dma map destroy\n", __func__);
|
|
}
|
|
}
|
|
bus_dma_tag_destroy(ocs->dmat);
|
|
ocs_xport_free(ocs->xport);
|
|
ocs->xport = NULL;
|
|
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Detach the driver from the given device
|
|
*
|
|
* If the driver is a loadable module, this routine gets called at unload
|
|
* time. This routine will stop the device and free any allocated resources.
|
|
*
|
|
* @param dev device abstraction
|
|
*
|
|
* @return 0 if the driver detaches from the device, ENXIO otherwise
|
|
*/
|
|
static int
|
|
ocs_pci_detach(device_t dev)
|
|
{
|
|
struct ocs_softc *ocs;
|
|
|
|
ocs = (struct ocs_softc *)device_get_softc(dev);
|
|
if (!ocs) {
|
|
device_printf(dev, "no driver context?!?\n");
|
|
return -1;
|
|
}
|
|
|
|
if (ocs->config_tgt && ocs->enable_tgt) {
|
|
device_printf(dev, "can't detach with target mode enabled\n");
|
|
return EBUSY;
|
|
}
|
|
|
|
ocs_device_detach(ocs);
|
|
|
|
/*
|
|
* Workaround for OCS SCSI Transport quirk.
|
|
*
|
|
* CTL requires that target mode is disabled prior to unloading the
|
|
* driver (ie ocs->enable_tgt = FALSE), but once the target is disabled,
|
|
* the transport will not call ocs_scsi_tgt_del_device() which deallocates
|
|
* CAM resources. The workaround is to explicitly make the call here.
|
|
*/
|
|
if (ocs->config_tgt)
|
|
ocs_scsi_tgt_del_device(ocs);
|
|
|
|
/* free strdup created buffer.*/
|
|
free(ocs->hw_war_version, M_OCS);
|
|
|
|
ocs_device_lock_free(ocs);
|
|
|
|
ocs_debug_detach(ocs);
|
|
|
|
ocs_ramlog_free(ocs, ocs->ramlog);
|
|
|
|
ocs_release_bus(ocs);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* @brief Notify driver of system shutdown
|
|
*
|
|
* @param dev device abstraction
|
|
*
|
|
* @return 0 if the driver attaches to the device, ENXIO otherwise
|
|
*/
|
|
static int
|
|
ocs_pci_shutdown(device_t dev)
|
|
{
|
|
device_printf(dev, "%s\n", __func__);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* @brief Release bus resources allocated within the soft context
|
|
*
|
|
* @param ocs Pointer to the driver's context
|
|
*
|
|
* @return none
|
|
*/
|
|
static void
|
|
ocs_release_bus(struct ocs_softc *ocs)
|
|
{
|
|
|
|
if (NULL != ocs) {
|
|
uint32_t i;
|
|
|
|
ocs_intr_teardown(ocs);
|
|
|
|
if (ocs->irq) {
|
|
bus_release_resource(ocs->dev, SYS_RES_IRQ,
|
|
rman_get_rid(ocs->irq), ocs->irq);
|
|
|
|
if (ocs->n_vec) {
|
|
pci_release_msi(ocs->dev);
|
|
ocs->n_vec = 0;
|
|
}
|
|
|
|
ocs->irq = NULL;
|
|
}
|
|
|
|
bus_dma_tag_destroy(ocs->dmat);
|
|
|
|
for (i = 0; i < PCI_MAX_BAR; i++) {
|
|
if (ocs->reg[i].res) {
|
|
bus_release_resource(ocs->dev, SYS_RES_MEMORY,
|
|
ocs->reg[i].rid,
|
|
ocs->reg[i].res);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @brief Allocate and initialize interrupts
|
|
*
|
|
* @param ocs Pointer to the driver's context
|
|
*
|
|
* @return none
|
|
*/
|
|
static int32_t
|
|
ocs_intr_alloc(struct ocs_softc *ocs)
|
|
{
|
|
|
|
ocs->n_vec = 1;
|
|
if (pci_alloc_msix(ocs->dev, &ocs->n_vec)) {
|
|
device_printf(ocs->dev, "MSI-X allocation failed\n");
|
|
if (pci_alloc_msi(ocs->dev, &ocs->n_vec)) {
|
|
device_printf(ocs->dev, "MSI allocation failed \n");
|
|
ocs->irqid = 0;
|
|
ocs->n_vec = 0;
|
|
} else
|
|
ocs->irqid = 1;
|
|
} else {
|
|
ocs->irqid = 1;
|
|
}
|
|
|
|
ocs->irq = bus_alloc_resource_any(ocs->dev, SYS_RES_IRQ, &ocs->irqid,
|
|
RF_ACTIVE | RF_SHAREABLE);
|
|
if (NULL == ocs->irq) {
|
|
device_printf(ocs->dev, "could not allocate interrupt\n");
|
|
return -1;
|
|
}
|
|
|
|
ocs->intr_ctx.vec = 0;
|
|
ocs->intr_ctx.softc = ocs;
|
|
snprintf(ocs->intr_ctx.name, sizeof(ocs->intr_ctx.name),
|
|
"%s_intr_%d",
|
|
device_get_nameunit(ocs->dev),
|
|
ocs->intr_ctx.vec);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* @brief Create and attach an interrupt handler
|
|
*
|
|
* @param ocs Pointer to the driver's context
|
|
*
|
|
* @return 0 on success, non-zero otherwise
|
|
*/
|
|
static int32_t
|
|
ocs_intr_setup(struct ocs_softc *ocs)
|
|
{
|
|
driver_filter_t *filter = NULL;
|
|
|
|
if (0 == ocs->n_vec) {
|
|
filter = ocs_pci_intx_filter;
|
|
}
|
|
|
|
if (bus_setup_intr(ocs->dev, ocs->irq, INTR_MPSAFE | INTR_TYPE_CAM,
|
|
filter, ocs_pci_intr, &ocs->intr_ctx,
|
|
&ocs->tag)) {
|
|
device_printf(ocs->dev, "could not initialize interrupt\n");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* @brief Detach an interrupt handler
|
|
*
|
|
* @param ocs Pointer to the driver's context
|
|
*
|
|
* @return 0 on success, non-zero otherwise
|
|
*/
|
|
static int32_t
|
|
ocs_intr_teardown(struct ocs_softc *ocs)
|
|
{
|
|
|
|
if (!ocs) {
|
|
printf("%s: bad driver context?!?\n", __func__);
|
|
return -1;
|
|
}
|
|
|
|
if (ocs->tag) {
|
|
bus_teardown_intr(ocs->dev, ocs->irq, ocs->tag);
|
|
ocs->tag = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* @brief PCI interrupt handler
|
|
*
|
|
* @param arg pointer to the driver's software context
|
|
*
|
|
* @return FILTER_HANDLED if interrupt is processed, FILTER_STRAY otherwise
|
|
*/
|
|
static int
|
|
ocs_pci_intx_filter(void *arg)
|
|
{
|
|
ocs_intr_ctx_t *intr = arg;
|
|
struct ocs_softc *ocs = NULL;
|
|
uint16_t val = 0;
|
|
|
|
if (NULL == intr) {
|
|
return FILTER_STRAY;
|
|
}
|
|
|
|
ocs = intr->softc;
|
|
#ifndef PCIM_STATUS_INTR
|
|
#define PCIM_STATUS_INTR 0x0008
|
|
#endif
|
|
val = pci_read_config(ocs->dev, PCIR_STATUS, 2);
|
|
if (0xffff == val) {
|
|
device_printf(ocs->dev, "%s: pci_read_config(PCIR_STATUS) failed\n", __func__);
|
|
return FILTER_STRAY;
|
|
}
|
|
if (0 == (val & PCIM_STATUS_INTR)) {
|
|
return FILTER_STRAY;
|
|
}
|
|
|
|
val = pci_read_config(ocs->dev, PCIR_COMMAND, 2);
|
|
val |= PCIM_CMD_INTxDIS;
|
|
pci_write_config(ocs->dev, PCIR_COMMAND, val, 2);
|
|
|
|
return FILTER_SCHEDULE_THREAD;
|
|
}
|
|
|
|
/**
|
|
* @brief interrupt handler
|
|
*
|
|
* @param context pointer to the interrupt context
|
|
*/
|
|
static void
|
|
ocs_pci_intr(void *context)
|
|
{
|
|
ocs_intr_ctx_t *intr = context;
|
|
struct ocs_softc *ocs = intr->softc;
|
|
|
|
mtx_lock(&ocs->sim_lock);
|
|
ocs_hw_process(&ocs->hw, intr->vec, OCS_OS_MAX_ISR_TIME_MSEC);
|
|
mtx_unlock(&ocs->sim_lock);
|
|
}
|
|
|
|
/**
|
|
* @brief Initialize DMA tag
|
|
*
|
|
* @param ocs the driver instance's software context
|
|
*
|
|
* @return 0 on success, non-zero otherwise
|
|
*/
|
|
static int32_t
|
|
ocs_init_dma_tag(struct ocs_softc *ocs)
|
|
{
|
|
uint32_t max_sgl = 0;
|
|
uint32_t max_sge = 0;
|
|
|
|
/*
|
|
* IOs can't use the parent DMA tag and must create their
|
|
* own, based primarily on a restricted number of DMA segments.
|
|
* This is more of a BSD requirement than a SLI Port requirement
|
|
*/
|
|
ocs_hw_get(&ocs->hw, OCS_HW_N_SGL, &max_sgl);
|
|
ocs_hw_get(&ocs->hw, OCS_HW_MAX_SGE, &max_sge);
|
|
|
|
if (bus_dma_tag_create(ocs->dmat,
|
|
1, /* byte alignment */
|
|
0, /* no boundary restrictions */
|
|
BUS_SPACE_MAXADDR, /* no minimum low address */
|
|
BUS_SPACE_MAXADDR, /* no maximum high address */
|
|
NULL, /* no filter function */
|
|
NULL, /* or arguments */
|
|
BUS_SPACE_MAXSIZE, /* max size covered by tag */
|
|
max_sgl, /* segment count restrictions */
|
|
max_sge, /* segment length restrictions */
|
|
0, /* flags */
|
|
NULL, /* no lock manipulation function */
|
|
NULL, /* or arguments */
|
|
&ocs->buf_dmat)) {
|
|
device_printf(ocs->dev, "%s: bad bus_dma_tag_create(buf_dmat)\n", __func__);
|
|
return -1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int32_t
|
|
ocs_get_property(const char *prop_name, char *buffer, uint32_t buffer_len)
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* @brief return pointer to ocs structure given instance index
|
|
*
|
|
* A pointer to an ocs structure is returned given an instance index.
|
|
*
|
|
* @param index index to ocs_devices array
|
|
*
|
|
* @return ocs pointer
|
|
*/
|
|
|
|
ocs_t *ocs_get_instance(uint32_t index)
|
|
{
|
|
if (index < ARRAY_SIZE(ocs_devices)) {
|
|
return ocs_devices[index];
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* @brief Return instance index of an opaque ocs structure
|
|
*
|
|
* Returns the ocs instance index
|
|
*
|
|
* @param os pointer to ocs instance
|
|
*
|
|
* @return pointer to ocs instance index
|
|
*/
|
|
uint32_t
|
|
ocs_instance(void *os)
|
|
{
|
|
ocs_t *ocs = os;
|
|
return ocs->instance_index;
|
|
}
|
|
|
|
static device_method_t ocs_methods[] = {
|
|
DEVMETHOD(device_probe, ocs_pci_probe),
|
|
DEVMETHOD(device_attach, ocs_pci_attach),
|
|
DEVMETHOD(device_detach, ocs_pci_detach),
|
|
DEVMETHOD(device_shutdown, ocs_pci_shutdown),
|
|
{0, 0}
|
|
};
|
|
|
|
static driver_t ocs_driver = {
|
|
"ocs_fc",
|
|
ocs_methods,
|
|
sizeof(struct ocs_softc)
|
|
};
|
|
|
|
static devclass_t ocs_devclass;
|
|
|
|
DRIVER_MODULE(ocs_fc, pci, ocs_driver, ocs_devclass, 0, 0);
|
|
MODULE_VERSION(ocs_fc, 1);
|
|
|