/* * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2020-2024, Broadcom Inc. All rights reserved. * Support: * * Authors: Sumit Saxena * Chandrakanth Patil * * 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. * 3. Neither the name of the Broadcom Inc. nor the names of its contributors * may be used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. 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(Broadcom) MPI3MR Adapter FreeBSD */ #include "mpi3mr.h" #include "mpi3mr_cam.h" #include "mpi3mr_app.h" static int sc_ids; static int mpi3mr_pci_probe(device_t); static int mpi3mr_pci_attach(device_t); static int mpi3mr_pci_detach(device_t); static int mpi3mr_pci_suspend(device_t); static int mpi3mr_pci_resume(device_t); static int mpi3mr_setup_resources(struct mpi3mr_softc *sc); static void mpi3mr_release_resources(struct mpi3mr_softc *); static void mpi3mr_teardown_irqs(struct mpi3mr_softc *sc); extern void mpi3mr_watchdog_thread(void *arg); static device_method_t mpi3mr_methods[] = { DEVMETHOD(device_probe, mpi3mr_pci_probe), DEVMETHOD(device_attach, mpi3mr_pci_attach), DEVMETHOD(device_detach, mpi3mr_pci_detach), DEVMETHOD(device_suspend, mpi3mr_pci_suspend), DEVMETHOD(device_resume, mpi3mr_pci_resume), DEVMETHOD(bus_print_child, bus_generic_print_child), DEVMETHOD(bus_driver_added, bus_generic_driver_added), { 0, 0 } }; char fmt_os_ver[16]; SYSCTL_NODE(_hw, OID_AUTO, mpi3mr, CTLFLAG_RD, 0, "MPI3MR Driver Parameters"); MALLOC_DEFINE(M_MPI3MR, "mpi3mrbuf", "Buffers for the MPI3MR driver"); static driver_t mpi3mr_pci_driver = { "mpi3mr", mpi3mr_methods, sizeof(struct mpi3mr_softc) }; struct mpi3mr_ident { uint16_t vendor; uint16_t device; uint16_t subvendor; uint16_t subdevice; u_int flags; const char *desc; } mpi3mr_identifiers[] = { { MPI3_MFGPAGE_VENDORID_BROADCOM, MPI3_MFGPAGE_DEVID_SAS4116, 0xffff, 0xffff, 0, "Broadcom MPIMR 3.0 controller" }, { 0 } }; DRIVER_MODULE(mpi3mr, pci, mpi3mr_pci_driver, 0, 0); MODULE_PNP_INFO("U16:vendor;U16:device;U16:subvendor;U16:subdevice;D:#", pci, mpi3mr, mpi3mr_identifiers, nitems(mpi3mr_identifiers) - 1); MODULE_DEPEND(mpi3mr, cam, 1, 1, 1); /* * mpi3mr_setup_sysctl: setup sysctl values for mpi3mr * input: Adapter instance soft state * * Setup sysctl entries for mpi3mr driver. */ static void mpi3mr_setup_sysctl(struct mpi3mr_softc *sc) { struct sysctl_ctx_list *sysctl_ctx = NULL; struct sysctl_oid *sysctl_tree = NULL; char tmpstr[80], tmpstr2[80]; /* * Setup the sysctl variable so the user can change the debug level * on the fly. */ snprintf(tmpstr, sizeof(tmpstr), "MPI3MR controller %d", device_get_unit(sc->mpi3mr_dev)); snprintf(tmpstr2, sizeof(tmpstr2), "%d", device_get_unit(sc->mpi3mr_dev)); sysctl_ctx = device_get_sysctl_ctx(sc->mpi3mr_dev); if (sysctl_ctx != NULL) sysctl_tree = device_get_sysctl_tree(sc->mpi3mr_dev); if (sysctl_tree == NULL) { sysctl_ctx_init(&sc->sysctl_ctx); sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx, SYSCTL_STATIC_CHILDREN(_hw_mpi3mr), OID_AUTO, tmpstr2, CTLFLAG_RD, 0, tmpstr); if (sc->sysctl_tree == NULL) return; sysctl_ctx = &sc->sysctl_ctx; sysctl_tree = sc->sysctl_tree; } SYSCTL_ADD_STRING(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), OID_AUTO, "driver_version", CTLFLAG_RD, MPI3MR_DRIVER_VERSION, strlen(MPI3MR_DRIVER_VERSION), "driver version"); SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), OID_AUTO, "fw_outstanding", CTLFLAG_RD, &sc->fw_outstanding.val_rdonly, 0, "FW outstanding commands"); SYSCTL_ADD_INT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), OID_AUTO, "io_cmds_highwater", CTLFLAG_RD, &sc->io_cmds_highwater, 0, "Max FW outstanding commands"); SYSCTL_ADD_STRING(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), OID_AUTO, "firmware_version", CTLFLAG_RD, sc->fw_version, strlen(sc->fw_version), "firmware version"); SYSCTL_ADD_UINT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), OID_AUTO, "mpi3mr_debug", CTLFLAG_RW, &sc->mpi3mr_debug, 0, "Driver debug level"); SYSCTL_ADD_UINT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), OID_AUTO, "reset", CTLFLAG_RW, &sc->reset.type, 0, "Soft reset(1)/Diag reset(2)"); SYSCTL_ADD_UINT(sysctl_ctx, SYSCTL_CHILDREN(sysctl_tree), OID_AUTO, "iot_enable", CTLFLAG_RW, &sc->iot_enable, 0, "IO throttling enable at driver level(for debug purpose)"); } /* * mpi3mr_get_tunables: get tunable parameters. * input: Adapter instance soft state * * Get tunable parameters. This will help to debug driver at boot time. */ static void mpi3mr_get_tunables(struct mpi3mr_softc *sc) { char tmpstr[80]; sc->mpi3mr_debug = (MPI3MR_ERROR | MPI3MR_INFO | MPI3MR_FAULT); sc->reset_in_progress = 0; sc->reset.type = 0; sc->iot_enable = 1; /* * Grab the global variables. */ TUNABLE_INT_FETCH("hw.mpi3mr.debug_level", &sc->mpi3mr_debug); TUNABLE_INT_FETCH("hw.mpi3mr.ctrl_reset", &sc->reset.type); TUNABLE_INT_FETCH("hw.mpi3mr.iot_enable", &sc->iot_enable); /* Grab the unit-instance variables */ snprintf(tmpstr, sizeof(tmpstr), "dev.mpi3mr.%d.debug_level", device_get_unit(sc->mpi3mr_dev)); TUNABLE_INT_FETCH(tmpstr, &sc->mpi3mr_debug); snprintf(tmpstr, sizeof(tmpstr), "dev.mpi3mr.%d.reset", device_get_unit(sc->mpi3mr_dev)); TUNABLE_INT_FETCH(tmpstr, &sc->reset.type); snprintf(tmpstr, sizeof(tmpstr), "dev.mpi3mr.%d.iot_enable", device_get_unit(sc->mpi3mr_dev)); TUNABLE_INT_FETCH(tmpstr, &sc->iot_enable); } static struct mpi3mr_ident * mpi3mr_find_ident(device_t dev) { struct mpi3mr_ident *m; for (m = mpi3mr_identifiers; m->vendor != 0; m++) { if (m->vendor != pci_get_vendor(dev)) continue; if (m->device != pci_get_device(dev)) continue; if ((m->subvendor != 0xffff) && (m->subvendor != pci_get_subvendor(dev))) continue; if ((m->subdevice != 0xffff) && (m->subdevice != pci_get_subdevice(dev))) continue; return (m); } return (NULL); } static int mpi3mr_pci_probe(device_t dev) { static u_int8_t first_ctrl = 1; struct mpi3mr_ident *id; char raw_os_ver[16]; if ((id = mpi3mr_find_ident(dev)) != NULL) { if (first_ctrl) { first_ctrl = 0; MPI3MR_OS_VERSION(raw_os_ver, fmt_os_ver); printf("mpi3mr: Loading Broadcom mpi3mr driver version: %s OS version: %s\n", MPI3MR_DRIVER_VERSION, fmt_os_ver); } device_set_desc(dev, id->desc); device_set_desc(dev, id->desc); return (BUS_PROBE_DEFAULT); } return (ENXIO); } static void mpi3mr_release_resources(struct mpi3mr_softc *sc) { if (sc->mpi3mr_parent_dmat != NULL) { bus_dma_tag_destroy(sc->mpi3mr_parent_dmat); } if (sc->mpi3mr_regs_resource != NULL) { bus_release_resource(sc->mpi3mr_dev, SYS_RES_MEMORY, sc->mpi3mr_regs_rid, sc->mpi3mr_regs_resource); } } static int mpi3mr_setup_resources(struct mpi3mr_softc *sc) { bus_dma_template_t t; int i; device_t dev = sc->mpi3mr_dev; pci_enable_busmaster(dev); for (i = 0; i < PCI_MAXMAPS_0; i++) { sc->mpi3mr_regs_rid = PCIR_BAR(i); if ((sc->mpi3mr_regs_resource = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mpi3mr_regs_rid, RF_ACTIVE)) != NULL) break; } if (sc->mpi3mr_regs_resource == NULL) { mpi3mr_printf(sc, "Cannot allocate PCI registers\n"); return (ENXIO); } sc->mpi3mr_btag = rman_get_bustag(sc->mpi3mr_regs_resource); sc->mpi3mr_bhandle = rman_get_bushandle(sc->mpi3mr_regs_resource); /* * XXX Perhaps we should move this to after we read iocfacts and use * that to create the proper parent tag. However, to get the iocfacts * we need to have a dmatag for both the admin queue and the iocfacts * DMA transfer. So for now, we just create a 'no restriction' tag and * use sc->dma_loaddr for all the other tag_create calls to get the * right value. It would be nice if one could retroactively adjust a * created tag. The Linux driver effectively does this by setting the * dma_mask on the device. */ /* Allocate the parent DMA tag */ bus_dma_template_init(&t, bus_get_dma_tag(dev)); if (bus_dma_template_tag(&t, &sc->mpi3mr_parent_dmat)) { mpi3mr_dprint(sc, MPI3MR_ERROR, "Cannot allocate parent DMA tag\n"); return (ENOMEM); } sc->max_msix_vectors = pci_msix_count(dev); return 0; } static int mpi3mr_startup(struct mpi3mr_softc *sc) { sc->mpi3mr_flags &= ~MPI3MR_FLAGS_PORT_ENABLE_DONE; mpi3mr_issue_port_enable(sc, 1); return (0); } /* Run through any late-start handlers. */ static void mpi3mr_ich_startup(void *arg) { struct mpi3mr_softc *sc; int error; sc = (struct mpi3mr_softc *)arg; mpi3mr_dprint(sc, MPI3MR_XINFO, "%s entry\n", __func__); mtx_lock(&sc->mpi3mr_mtx); mpi3mr_startup(sc); mtx_unlock(&sc->mpi3mr_mtx); error = mpi3mr_kproc_create(mpi3mr_watchdog_thread, sc, &sc->watchdog_thread, 0, 0, "mpi3mr_watchdog%d", device_get_unit(sc->mpi3mr_dev)); if (error) device_printf(sc->mpi3mr_dev, "Error %d starting OCR thread\n", error); mpi3mr_dprint(sc, MPI3MR_XINFO, "disestablish config intrhook\n"); config_intrhook_disestablish(&sc->mpi3mr_ich); sc->mpi3mr_ich.ich_arg = NULL; mpi3mr_dprint(sc, MPI3MR_XINFO, "%s exit\n", __func__); } /** * mpi3mr_ctrl_security_status -Check controller secure status * @pdev: PCI device instance * * Read the Device Serial Number capability from PCI config * space and decide whether the controller is secure or not. * * Return: 0 on success, non-zero on failure. */ static int mpi3mr_ctrl_security_status(device_t dev) { int dev_serial_num, retval = 0; uint32_t cap_data, ctrl_status, debug_status; /* Check if Device serial number extended capability is supported */ if (pci_find_extcap(dev, PCIZ_SERNUM, &dev_serial_num) != 0) { device_printf(dev, "PCIZ_SERNUM is not supported\n"); return -1; } cap_data = pci_read_config(dev, dev_serial_num + 4, 4); debug_status = cap_data & MPI3MR_CTLR_SECURE_DBG_STATUS_MASK; ctrl_status = cap_data & MPI3MR_CTLR_SECURITY_STATUS_MASK; switch (ctrl_status) { case MPI3MR_INVALID_DEVICE: device_printf(dev, "Invalid (Non secure) controller is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n", pci_get_device(dev), pci_get_subvendor(dev), pci_get_subdevice(dev)); retval = -1; break; case MPI3MR_CONFIG_SECURE_DEVICE: if (!debug_status) device_printf(dev, "Config secure controller is detected\n"); break; case MPI3MR_HARD_SECURE_DEVICE: device_printf(dev, "Hard secure controller is detected\n"); break; case MPI3MR_TAMPERED_DEVICE: device_printf(dev, "Tampered (Non secure) controller is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n", pci_get_device(dev), pci_get_subvendor(dev), pci_get_subdevice(dev)); retval = -1; break; default: retval = -1; break; } if (!retval && debug_status) { device_printf(dev, "Secure Debug (Non secure) controller is detected: DID: 0x%x: SVID: 0x%x: SDID: 0x%x\n", pci_get_device(dev), pci_get_subvendor(dev), pci_get_subdevice(dev)); retval = -1; } return retval; } /* * mpi3mr_pci_attach - PCI entry point * @dev: pointer to device struct * * This function does the setup of PCI and registers, allocates controller resources, * initializes mutexes, linked lists and registers interrupts, CAM and initializes * the controller. * * Return: 0 on success and proper error codes on failure */ static int mpi3mr_pci_attach(device_t dev) { struct mpi3mr_softc *sc; int error; sc = device_get_softc(dev); bzero(sc, sizeof(*sc)); sc->mpi3mr_dev = dev; /* Don't load driver for Non-Secure controllers */ if (mpi3mr_ctrl_security_status(dev)) { sc->secure_ctrl = false; return 0; } sc->secure_ctrl = true; if ((error = mpi3mr_setup_resources(sc)) != 0) goto load_failed; sc->id = sc_ids++; mpi3mr_atomic_set(&sc->fw_outstanding, 0); mpi3mr_atomic_set(&sc->pend_ioctls, 0); sc->admin_req = NULL; sc->admin_reply = NULL; sprintf(sc->driver_name, "%s", MPI3MR_DRIVER_NAME); sprintf(sc->name, "%s%d", sc->driver_name, sc->id); sc->mpi3mr_dev = dev; mpi3mr_get_tunables(sc); if ((error = mpi3mr_initialize_ioc(sc, MPI3MR_INIT_TYPE_INIT)) != 0) { mpi3mr_dprint(sc, MPI3MR_ERROR, "FW initialization failed\n"); goto load_failed; } if ((error = mpi3mr_alloc_requests(sc)) != 0) { mpi3mr_dprint(sc, MPI3MR_ERROR, "Command frames allocation failed\n"); goto load_failed; } if ((error = mpi3mr_cam_attach(sc)) != 0) { mpi3mr_dprint(sc, MPI3MR_ERROR, "CAM attach failed\n"); goto load_failed; } sc->mpi3mr_ich.ich_func = mpi3mr_ich_startup; sc->mpi3mr_ich.ich_arg = sc; if (config_intrhook_establish(&sc->mpi3mr_ich) != 0) { mpi3mr_dprint(sc, MPI3MR_ERROR, "Cannot establish MPI3MR ICH config hook\n"); error = EINVAL; } mpi3mr_dprint(sc, MPI3MR_INFO, "allocating ioctl dma buffers\n"); mpi3mr_alloc_ioctl_dma_memory(sc); if ((error = mpi3mr_app_attach(sc)) != 0) { mpi3mr_dprint(sc, MPI3MR_ERROR, "APP/IOCTL attach failed\n"); goto load_failed; } mpi3mr_setup_sysctl(sc); return 0; load_failed: mpi3mr_cleanup_interrupts(sc); mpi3mr_free_mem(sc); mpi3mr_app_detach(sc); mpi3mr_cam_detach(sc); mpi3mr_destory_mtx(sc); mpi3mr_release_resources(sc); return error; } void mpi3mr_cleanup_interrupts(struct mpi3mr_softc *sc) { mpi3mr_disable_interrupts(sc); mpi3mr_teardown_irqs(sc); if (sc->irq_ctx) { free(sc->irq_ctx, M_MPI3MR); sc->irq_ctx = NULL; } if (sc->msix_enable) pci_release_msi(sc->mpi3mr_dev); sc->msix_count = 0; } int mpi3mr_setup_irqs(struct mpi3mr_softc *sc) { device_t dev; int error; int i, rid, initial_rid; struct mpi3mr_irq_context *irq_ctx; struct irq_info *irq_info; dev = sc->mpi3mr_dev; error = -1; if (sc->msix_enable) initial_rid = 1; else initial_rid = 0; for (i = 0; i < sc->msix_count; i++) { irq_ctx = &sc->irq_ctx[i]; irq_ctx->msix_index = i; irq_ctx->sc = sc; irq_info = &irq_ctx->irq_info; rid = i + initial_rid; irq_info->irq_rid = rid; irq_info->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &irq_info->irq_rid, RF_ACTIVE); if (irq_info->irq == NULL) { mpi3mr_dprint(sc, MPI3MR_ERROR, "Cannot allocate interrupt RID %d\n", rid); sc->msix_count = i; break; } error = bus_setup_intr(dev, irq_info->irq, INTR_MPSAFE | INTR_TYPE_CAM, NULL, mpi3mr_isr, irq_ctx, &irq_info->intrhand); if (error) { mpi3mr_dprint(sc, MPI3MR_ERROR, "Cannot setup interrupt RID %d\n", rid); sc->msix_count = i; break; } } mpi3mr_dprint(sc, MPI3MR_INFO, "Set up %d MSI-x interrupts\n", sc->msix_count); return (error); } static void mpi3mr_teardown_irqs(struct mpi3mr_softc *sc) { struct irq_info *irq_info; int i; for (i = 0; i < sc->msix_count; i++) { irq_info = &sc->irq_ctx[i].irq_info; if (irq_info->irq != NULL) { bus_teardown_intr(sc->mpi3mr_dev, irq_info->irq, irq_info->intrhand); bus_release_resource(sc->mpi3mr_dev, SYS_RES_IRQ, irq_info->irq_rid, irq_info->irq); } } } /* * Allocate, but don't assign interrupts early. Doing it before requesting * the IOCFacts message informs the firmware that we want to do MSI-X * multiqueue. We might not use all of the available messages, but there's * no reason to re-alloc if we don't. */ int mpi3mr_alloc_interrupts(struct mpi3mr_softc *sc, U16 setup_one) { int error, msgs; U16 num_queues; error = 0; msgs = 0; mpi3mr_cleanup_interrupts(sc); if (setup_one) { msgs = 1; } else { msgs = min(sc->max_msix_vectors, sc->cpu_count); num_queues = min(sc->facts.max_op_reply_q, sc->facts.max_op_req_q); msgs = min(msgs, num_queues); mpi3mr_dprint(sc, MPI3MR_INFO, "Supported MSI-x count: %d " " CPU count: %d Requested MSI-x count: %d\n", sc->max_msix_vectors, sc->cpu_count, msgs); } if (msgs != 0) { error = pci_alloc_msix(sc->mpi3mr_dev, &msgs); if (error) { mpi3mr_dprint(sc, MPI3MR_ERROR, "Could not allocate MSI-x interrupts Error: %x\n", error); goto out_failed; } else sc->msix_enable = 1; } sc->msix_count = msgs; sc->irq_ctx = malloc(sizeof(struct mpi3mr_irq_context) * msgs, M_MPI3MR, M_NOWAIT | M_ZERO); if (!sc->irq_ctx) { mpi3mr_dprint(sc, MPI3MR_ERROR, "Cannot alloc memory for interrupt info\n"); error = -1; goto out_failed; } mpi3mr_dprint(sc, MPI3MR_XINFO, "Allocated %d MSI-x interrupts\n", msgs); return error; out_failed: mpi3mr_cleanup_interrupts(sc); return (error); } static int mpi3mr_pci_detach(device_t dev) { struct mpi3mr_softc *sc; int i = 0; sc = device_get_softc(dev); if (!sc->secure_ctrl) return 0; if (sc->sysctl_tree != NULL) sysctl_ctx_free(&sc->sysctl_ctx); mtx_lock(&sc->reset_mutex); sc->mpi3mr_flags |= MPI3MR_FLAGS_SHUTDOWN; if (sc->watchdog_thread_active) wakeup(&sc->watchdog_chan); mtx_unlock(&sc->reset_mutex); while (sc->reset_in_progress && (i < PEND_IOCTLS_COMP_WAIT_TIME)) { i++; if (!(i % 5)) { mpi3mr_dprint(sc, MPI3MR_INFO, "[%2d]waiting for reset to be finished from %s\n", i, __func__); } pause("mpi3mr_shutdown", hz); } i = 0; while (sc->watchdog_thread_active && (i < 180)) { i++; if (!(i % 5)) { mpi3mr_dprint(sc, MPI3MR_INFO, "[%2d]waiting for " "mpi3mr_reset thread to quit reset %d\n", i, sc->watchdog_thread_active); } pause("mpi3mr_shutdown", hz); } i = 0; while (mpi3mr_atomic_read(&sc->pend_ioctls) && (i < 180)) { i++; if (!(i % 5)) { mpi3mr_dprint(sc, MPI3MR_INFO, "[%2d]waiting for IOCTL to be finished from %s\n", i, __func__); } pause("mpi3mr_shutdown", hz); } mpi3mr_cleanup_ioc(sc); mpi3mr_cleanup_event_taskq(sc); mpi3mr_app_detach(sc); mpi3mr_cam_detach(sc); mpi3mr_cleanup_interrupts(sc); mpi3mr_destory_mtx(sc); mpi3mr_free_mem(sc); mpi3mr_release_resources(sc); sc_ids--; return (0); } static int mpi3mr_pci_suspend(device_t dev) { return (EINVAL); } static int mpi3mr_pci_resume(device_t dev) { return (EINVAL); }