353 lines
10 KiB
C
353 lines
10 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* BSD LICENSE
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*
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* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
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* All rights reserved.
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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
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _ISCI_H
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#define _ISCI_H
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/bus.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/types.h>
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#include <sys/malloc.h>
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#include <sys/rman.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <cam/cam.h>
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#include <cam/cam_ccb.h>
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#include <cam/cam_sim.h>
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#include <cam/cam_xpt_sim.h>
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#include <dev/isci/environment.h>
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#include <dev/isci/scil/intel_pci.h>
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#include <dev/isci/scil/sci_types.h>
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#include <dev/isci/scil/sci_object.h>
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#include <dev/isci/scil/sci_status.h>
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#include <dev/isci/scil/sci_pool.h>
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#include <dev/isci/scil/sci_fast_list.h>
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#include <dev/isci/scil/sci_controller_constants.h>
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#include <dev/isci/scil/scic_controller.h>
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#include <dev/isci/scil/scic_config_parameters.h>
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#define DEVICE2SOFTC(dev) ((struct isci_softc *) device_get_softc(dev))
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#define DEVICE_TIMEOUT 1000
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#define SCI_MAX_TIMERS 32
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#define ISCI_NUM_PCI_BARS 2
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#define ISCI_MAX_LUN 8
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/* This device cannot DMA across a 4GB boundary */
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#define ISCI_DMA_BOUNDARY ((bus_addr_t)((uint64_t)1 << 32))
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MALLOC_DECLARE(M_ISCI);
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struct ISCI_TIMER {
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struct callout callout;
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SCI_TIMER_CALLBACK_T callback;
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void *cookie;
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BOOL is_started;
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};
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struct ISCI_REMOTE_DEVICE {
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uint32_t index;
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struct ISCI_DOMAIN *domain;
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SCI_REMOTE_DEVICE_HANDLE_T sci_object;
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BOOL is_resetting;
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uint32_t frozen_lun_mask;
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SCI_FAST_LIST_ELEMENT_T pending_device_reset_element;
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/*
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* This queue maintains CCBs that have been returned with
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* SCI_IO_FAILURE_INVALID_STATE from the SCI layer. These CCBs
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* need to be retried, but we cannot return CAM_REQUEUE_REQ because
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* this status gets passed all the way back up to users of the pass(4)
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* interface and breaks things like smartctl. So instead, we queue
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* these CCBs internally.
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*/
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TAILQ_HEAD(,ccb_hdr) queued_ccbs;
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/*
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* Marker denoting this remote device needs its first queued ccb to
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* be retried.
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*/
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BOOL release_queued_ccb;
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/*
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* Points to a CCB in the queue that is currently being processed by
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* SCIL. This allows us to keep in flight CCBs in the queue so as to
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* maintain ordering (i.e. in case we retry an I/O and then find out
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* it needs to be retried again - it just keeps its same place in the
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* queue.
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*/
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union ccb * queued_ccb_in_progress;
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};
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struct ISCI_DOMAIN {
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struct ISCI_CONTROLLER *controller;
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SCI_DOMAIN_HANDLE_T sci_object;
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uint8_t index;
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struct ISCI_REMOTE_DEVICE *da_remote_device;
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};
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struct ISCI_MEMORY
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{
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bus_addr_t physical_address;
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bus_dma_tag_t dma_tag;
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bus_dmamap_t dma_map;
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POINTER_UINT virtual_address;
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uint32_t size;
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int error;
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};
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struct ISCI_INTERRUPT_INFO
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{
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SCIC_CONTROLLER_HANDLER_METHODS_T *handlers;
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void *interrupt_target_handle;
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struct resource *res;
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int rid;
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void *tag;
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};
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struct ISCI_PHY
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{
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struct cdev *cdev_fault;
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struct cdev *cdev_locate;
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SCI_CONTROLLER_HANDLE_T handle;
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int index;
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int led_fault;
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int led_locate;
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};
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struct ISCI_CONTROLLER
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{
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struct isci_softc *isci;
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uint8_t index;
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SCI_CONTROLLER_HANDLE_T scif_controller_handle;
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struct ISCI_DOMAIN domain[SCI_MAX_DOMAINS];
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BOOL is_started;
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BOOL has_been_scanned;
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uint32_t initial_discovery_mask;
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BOOL is_frozen;
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BOOL release_queued_ccbs;
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BOOL fail_on_task_timeout;
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uint8_t *remote_device_memory;
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struct ISCI_MEMORY cached_controller_memory;
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struct ISCI_MEMORY uncached_controller_memory;
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struct ISCI_MEMORY request_memory;
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bus_dma_tag_t buffer_dma_tag;
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struct mtx lock;
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struct cam_sim *sim;
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struct cam_path *path;
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struct ISCI_REMOTE_DEVICE *remote_device[SCI_MAX_REMOTE_DEVICES];
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void *timer_memory;
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SCIC_OEM_PARAMETERS_T oem_parameters;
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uint32_t oem_parameters_version;
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uint32_t queue_depth;
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uint32_t sim_queue_depth;
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SCI_FAST_LIST_T pending_device_reset_list;
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struct ISCI_PHY phys[SCI_MAX_PHYS];
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SCI_MEMORY_DESCRIPTOR_LIST_HANDLE_T mdl;
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SCI_POOL_CREATE(remote_device_pool, struct ISCI_REMOTE_DEVICE *, SCI_MAX_REMOTE_DEVICES);
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SCI_POOL_CREATE(request_pool, struct ISCI_REQUEST *, SCI_MAX_IO_REQUESTS);
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SCI_POOL_CREATE(timer_pool, struct ISCI_TIMER *, SCI_MAX_TIMERS);
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SCI_POOL_CREATE(unmap_buffer_pool, void *, SCI_MAX_REMOTE_DEVICES);
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};
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struct ISCI_REQUEST
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{
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SCI_CONTROLLER_HANDLE_T controller_handle;
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SCI_REMOTE_DEVICE_HANDLE_T remote_device_handle;
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bus_dma_tag_t dma_tag;
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bus_dmamap_t dma_map;
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SCI_PHYSICAL_ADDRESS physical_address;
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struct callout timer;
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};
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struct ISCI_IO_REQUEST
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{
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struct ISCI_REQUEST parent;
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SCI_IO_REQUEST_HANDLE_T sci_object;
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union ccb *ccb;
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uint32_t num_segments;
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uint32_t current_sge_index;
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bus_dma_segment_t *sge;
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};
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struct ISCI_TASK_REQUEST
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{
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struct ISCI_REQUEST parent;
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struct scsi_sense_data sense_data;
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SCI_TASK_REQUEST_HANDLE_T sci_object;
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union ccb *ccb;
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};
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struct ISCI_PCI_BAR {
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bus_space_tag_t bus_tag;
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bus_space_handle_t bus_handle;
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int resource_id;
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struct resource *resource;
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};
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/*
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* One of these per allocated PCI device.
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*/
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struct isci_softc {
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struct ISCI_PCI_BAR pci_bar[ISCI_NUM_PCI_BARS];
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struct ISCI_CONTROLLER controllers[SCI_MAX_CONTROLLERS];
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SCI_LIBRARY_HANDLE_T sci_library_handle;
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void * sci_library_memory;
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SCIC_CONTROLLER_HANDLER_METHODS_T handlers[4];
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struct ISCI_INTERRUPT_INFO interrupt_info[4];
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uint32_t controller_count;
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uint32_t num_interrupts;
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uint32_t coalesce_number;
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uint32_t coalesce_timeout;
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device_t device;
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SCI_PCI_COMMON_HEADER_T pci_common_header;
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BOOL oem_parameters_found;
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struct intr_config_hook config_hook;
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};
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int isci_allocate_resources(device_t device);
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int isci_allocate_dma_buffer(device_t device, struct ISCI_CONTROLLER *lock,
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struct ISCI_MEMORY *memory);
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void isci_remote_device_reset(struct ISCI_REMOTE_DEVICE *remote_device,
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union ccb *ccb);
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/**
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* Returns the negotiated link rate (in KB/s) for the associated
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* remote device. Used to fill out bitrate field for GET_TRANS_SETTINGS.
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* Will match the negotiated link rate for the lowest numbered local phy
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* in the port/domain containing this remote device.
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*/
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uint32_t isci_remote_device_get_bitrate(
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struct ISCI_REMOTE_DEVICE *remote_device);
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void isci_remote_device_freeze_lun_queue(
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struct ISCI_REMOTE_DEVICE *remote_device, lun_id_t lun);
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void isci_remote_device_release_lun_queue(
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struct ISCI_REMOTE_DEVICE *remote_device, lun_id_t lun);
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void isci_remote_device_release_device_queue(
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struct ISCI_REMOTE_DEVICE * remote_device);
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void isci_request_construct(struct ISCI_REQUEST *request,
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SCI_CONTROLLER_HANDLE_T scif_controller_handle,
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bus_dma_tag_t io_buffer_dma_tag, bus_addr_t physical_address);
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#define isci_io_request_get_max_io_size() \
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((SCI_MAX_SCATTER_GATHER_ELEMENTS - 1) * PAGE_SIZE)
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#define isci_task_request_get_object_size() \
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(sizeof(struct ISCI_TASK_REQUEST) + scif_task_request_get_object_size())
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#define isci_io_request_get_object_size() \
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(sizeof(struct ISCI_IO_REQUEST) + scif_io_request_get_object_size())
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#define isci_request_get_object_size() \
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max( \
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isci_task_request_get_object_size(), \
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isci_io_request_get_object_size() \
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)
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void isci_io_request_execute_scsi_io(union ccb *ccb,
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struct ISCI_CONTROLLER *controller);
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void isci_io_request_execute_smp_io(
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union ccb *ccb, struct ISCI_CONTROLLER *controller);
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void isci_io_request_timeout(void *);
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void isci_get_oem_parameters(struct isci_softc *isci);
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void isci_io_request_complete(
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SCI_CONTROLLER_HANDLE_T scif_controller,
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SCI_REMOTE_DEVICE_HANDLE_T remote_device,
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struct ISCI_IO_REQUEST * isci_request, SCI_IO_STATUS completion_status);
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void isci_task_request_complete(
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SCI_CONTROLLER_HANDLE_T scif_controller,
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SCI_REMOTE_DEVICE_HANDLE_T remote_device,
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SCI_TASK_REQUEST_HANDLE_T io_request, SCI_TASK_STATUS completion_status);
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void isci_sysctl_initialize(struct isci_softc *isci);
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void isci_controller_construct(struct ISCI_CONTROLLER *controller,
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struct isci_softc *isci);
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SCI_STATUS isci_controller_initialize(struct ISCI_CONTROLLER *controller);
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int isci_controller_allocate_memory(struct ISCI_CONTROLLER *controller);
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void isci_controller_domain_discovery_complete(
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struct ISCI_CONTROLLER *isci_controller, struct ISCI_DOMAIN *isci_domain);
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int isci_controller_attach_to_cam(struct ISCI_CONTROLLER *controller);
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void isci_controller_start(void *controller);
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void isci_controller_release_queued_ccbs(struct ISCI_CONTROLLER *controller);
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void isci_domain_construct(struct ISCI_DOMAIN *domain, uint32_t domain_index,
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struct ISCI_CONTROLLER *controller);
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void isci_interrupt_setup(struct isci_softc *isci);
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void isci_interrupt_poll_handler(struct ISCI_CONTROLLER *controller);
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void isci_log_message(uint32_t verbosity, char *log_message_prefix,
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char *log_message, ...);
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extern uint32_t g_isci_debug_level;
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#endif /* #ifndef _ISCI_H */
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