3da2a91a57
reset device task request from the driver. If the drive fails to respond with a signature FIS, the driver would previously get into an endless retry loop, stalling all I/O to the drive and keeping user processes stranded. Instead, fail the i/o and invalidate the device if the task management command times out. This is controllable with the sysctl and tunable hw.isci.fail_on_task_timeout dev.isci.0.fail_on_task_timeout The default for these is 1. Reviewed by: jimharris Obtained from: Netflix, Inc. MFC after: 2 days
831 lines
26 KiB
C
831 lines
26 KiB
C
/*-
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <dev/isci/isci.h>
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#include <sys/conf.h>
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#include <sys/malloc.h>
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#include <cam/cam_periph.h>
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#include <cam/cam_xpt_periph.h>
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#include <dev/isci/scil/sci_memory_descriptor_list.h>
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#include <dev/isci/scil/sci_memory_descriptor_list_decorator.h>
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#include <dev/isci/scil/scif_controller.h>
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#include <dev/isci/scil/scif_library.h>
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#include <dev/isci/scil/scif_io_request.h>
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#include <dev/isci/scil/scif_task_request.h>
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#include <dev/isci/scil/scif_remote_device.h>
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#include <dev/isci/scil/scif_domain.h>
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#include <dev/isci/scil/scif_user_callback.h>
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#include <dev/isci/scil/scic_sgpio.h>
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#include <dev/led/led.h>
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void isci_action(struct cam_sim *sim, union ccb *ccb);
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void isci_poll(struct cam_sim *sim);
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#define ccb_sim_ptr sim_priv.entries[0].ptr
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/**
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* @brief This user callback will inform the user that the controller has
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* had a serious unexpected error. The user should not the error,
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* disable interrupts, and wait for current ongoing processing to
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* complete. Subsequently, the user should reset the controller.
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*
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* @param[in] controller This parameter specifies the controller that had
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* an error.
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*
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* @return none
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*/
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void scif_cb_controller_error(SCI_CONTROLLER_HANDLE_T controller,
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SCI_CONTROLLER_ERROR error)
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{
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isci_log_message(0, "ISCI", "scif_cb_controller_error: 0x%x\n",
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error);
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}
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/**
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* @brief This user callback will inform the user that the controller has
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* finished the start process.
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*
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* @param[in] controller This parameter specifies the controller that was
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* started.
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* @param[in] completion_status This parameter specifies the results of
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* the start operation. SCI_SUCCESS indicates successful
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* completion.
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*
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* @return none
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*/
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void scif_cb_controller_start_complete(SCI_CONTROLLER_HANDLE_T controller,
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SCI_STATUS completion_status)
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{
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uint32_t index;
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struct ISCI_CONTROLLER *isci_controller = (struct ISCI_CONTROLLER *)
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sci_object_get_association(controller);
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isci_controller->is_started = TRUE;
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/* Set bits for all domains. We will clear them one-by-one once
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* the domains complete discovery, or return error when calling
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* scif_domain_discover. Once all bits are clear, we will register
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* the controller with CAM.
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*/
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isci_controller->initial_discovery_mask = (1 << SCI_MAX_DOMAINS) - 1;
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for(index = 0; index < SCI_MAX_DOMAINS; index++) {
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SCI_STATUS status;
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SCI_DOMAIN_HANDLE_T domain =
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isci_controller->domain[index].sci_object;
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status = scif_domain_discover(
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domain,
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scif_domain_get_suggested_discover_timeout(domain),
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DEVICE_TIMEOUT
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);
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if (status != SCI_SUCCESS)
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{
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isci_controller_domain_discovery_complete(
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isci_controller, &isci_controller->domain[index]);
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}
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}
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}
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/**
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* @brief This user callback will inform the user that the controller has
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* finished the stop process. Note, after user calls
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* scif_controller_stop(), before user receives this controller stop
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* complete callback, user should not expect any callback from
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* framework, such like scif_cb_domain_change_notification().
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*
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* @param[in] controller This parameter specifies the controller that was
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* stopped.
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* @param[in] completion_status This parameter specifies the results of
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* the stop operation. SCI_SUCCESS indicates successful
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* completion.
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*
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* @return none
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*/
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void scif_cb_controller_stop_complete(SCI_CONTROLLER_HANDLE_T controller,
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SCI_STATUS completion_status)
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{
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struct ISCI_CONTROLLER *isci_controller = (struct ISCI_CONTROLLER *)
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sci_object_get_association(controller);
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isci_controller->is_started = FALSE;
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}
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static void
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isci_single_map(void *arg, bus_dma_segment_t *seg, int nseg, int error)
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{
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SCI_PHYSICAL_ADDRESS *phys_addr = arg;
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*phys_addr = seg[0].ds_addr;
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}
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/**
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* @brief This method will be invoked to allocate memory dynamically.
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*
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* @param[in] controller This parameter represents the controller
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* object for which to allocate memory.
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* @param[out] mde This parameter represents the memory descriptor to
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* be filled in by the user that will reference the newly
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* allocated memory.
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*
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* @return none
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*/
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void scif_cb_controller_allocate_memory(SCI_CONTROLLER_HANDLE_T controller,
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SCI_PHYSICAL_MEMORY_DESCRIPTOR_T *mde)
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{
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struct ISCI_CONTROLLER *isci_controller = (struct ISCI_CONTROLLER *)
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sci_object_get_association(controller);
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/*
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* Note this routine is only used for buffers needed to translate
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* SCSI UNMAP commands to ATA DSM commands for SATA disks.
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*
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* We first try to pull a buffer from the controller's pool, and only
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* call contigmalloc if one isn't there.
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*/
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if (!sci_pool_empty(isci_controller->unmap_buffer_pool)) {
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sci_pool_get(isci_controller->unmap_buffer_pool,
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mde->virtual_address);
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} else
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mde->virtual_address = contigmalloc(PAGE_SIZE,
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M_ISCI, M_NOWAIT, 0, BUS_SPACE_MAXADDR,
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mde->constant_memory_alignment, 0);
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if (mde->virtual_address != NULL)
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bus_dmamap_load(isci_controller->buffer_dma_tag,
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NULL, mde->virtual_address, PAGE_SIZE,
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isci_single_map, &mde->physical_address,
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BUS_DMA_NOWAIT);
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}
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/**
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* @brief This method will be invoked to allocate memory dynamically.
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*
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* @param[in] controller This parameter represents the controller
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* object for which to allocate memory.
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* @param[out] mde This parameter represents the memory descriptor to
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* be filled in by the user that will reference the newly
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* allocated memory.
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*
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* @return none
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*/
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void scif_cb_controller_free_memory(SCI_CONTROLLER_HANDLE_T controller,
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SCI_PHYSICAL_MEMORY_DESCRIPTOR_T * mde)
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{
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struct ISCI_CONTROLLER *isci_controller = (struct ISCI_CONTROLLER *)
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sci_object_get_association(controller);
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/*
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* Put the buffer back into the controller's buffer pool, rather
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* than invoking configfree. This helps reduce chance we won't
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* have buffers available when system is under memory pressure.
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*/
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sci_pool_put(isci_controller->unmap_buffer_pool,
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mde->virtual_address);
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}
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void isci_controller_construct(struct ISCI_CONTROLLER *controller,
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struct isci_softc *isci)
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{
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SCI_CONTROLLER_HANDLE_T scif_controller_handle;
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scif_library_allocate_controller(isci->sci_library_handle,
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&scif_controller_handle);
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scif_controller_construct(isci->sci_library_handle,
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scif_controller_handle, NULL);
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controller->isci = isci;
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controller->scif_controller_handle = scif_controller_handle;
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/* This allows us to later use
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* sci_object_get_association(scif_controller_handle)
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* inside of a callback routine to get our struct ISCI_CONTROLLER object
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*/
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sci_object_set_association(scif_controller_handle, (void *)controller);
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controller->is_started = FALSE;
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controller->is_frozen = FALSE;
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controller->release_queued_ccbs = FALSE;
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controller->sim = NULL;
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controller->initial_discovery_mask = 0;
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sci_fast_list_init(&controller->pending_device_reset_list);
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mtx_init(&controller->lock, "isci", NULL, MTX_DEF);
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uint32_t domain_index;
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for(domain_index = 0; domain_index < SCI_MAX_DOMAINS; domain_index++) {
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isci_domain_construct( &controller->domain[domain_index],
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domain_index, controller);
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}
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controller->timer_memory = malloc(
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sizeof(struct ISCI_TIMER) * SCI_MAX_TIMERS, M_ISCI,
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M_NOWAIT | M_ZERO);
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sci_pool_initialize(controller->timer_pool);
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struct ISCI_TIMER *timer = (struct ISCI_TIMER *)
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controller->timer_memory;
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for ( int i = 0; i < SCI_MAX_TIMERS; i++ ) {
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sci_pool_put(controller->timer_pool, timer++);
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}
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sci_pool_initialize(controller->unmap_buffer_pool);
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}
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static void isci_led_fault_func(void *priv, int onoff)
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{
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struct ISCI_PHY *phy = priv;
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/* map onoff to the fault LED */
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phy->led_fault = onoff;
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scic_sgpio_update_led_state(phy->handle, 1 << phy->index,
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phy->led_fault, phy->led_locate, 0);
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}
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static void isci_led_locate_func(void *priv, int onoff)
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{
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struct ISCI_PHY *phy = priv;
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/* map onoff to the locate LED */
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phy->led_locate = onoff;
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scic_sgpio_update_led_state(phy->handle, 1 << phy->index,
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phy->led_fault, phy->led_locate, 0);
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}
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SCI_STATUS isci_controller_initialize(struct ISCI_CONTROLLER *controller)
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{
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SCIC_USER_PARAMETERS_T scic_user_parameters;
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SCI_CONTROLLER_HANDLE_T scic_controller_handle;
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char led_name[64];
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unsigned long tunable;
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uint32_t io_shortage;
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uint32_t fail_on_timeout;
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int i;
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scic_controller_handle =
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scif_controller_get_scic_handle(controller->scif_controller_handle);
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if (controller->isci->oem_parameters_found == TRUE)
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{
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scic_oem_parameters_set(
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scic_controller_handle,
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&controller->oem_parameters,
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(uint8_t)(controller->oem_parameters_version));
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}
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scic_user_parameters_get(scic_controller_handle, &scic_user_parameters);
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if (TUNABLE_ULONG_FETCH("hw.isci.no_outbound_task_timeout", &tunable))
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scic_user_parameters.sds1.no_outbound_task_timeout =
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(uint8_t)tunable;
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if (TUNABLE_ULONG_FETCH("hw.isci.ssp_max_occupancy_timeout", &tunable))
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scic_user_parameters.sds1.ssp_max_occupancy_timeout =
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(uint16_t)tunable;
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if (TUNABLE_ULONG_FETCH("hw.isci.stp_max_occupancy_timeout", &tunable))
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scic_user_parameters.sds1.stp_max_occupancy_timeout =
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(uint16_t)tunable;
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if (TUNABLE_ULONG_FETCH("hw.isci.ssp_inactivity_timeout", &tunable))
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scic_user_parameters.sds1.ssp_inactivity_timeout =
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(uint16_t)tunable;
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if (TUNABLE_ULONG_FETCH("hw.isci.stp_inactivity_timeout", &tunable))
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scic_user_parameters.sds1.stp_inactivity_timeout =
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(uint16_t)tunable;
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if (TUNABLE_ULONG_FETCH("hw.isci.max_speed_generation", &tunable))
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for (i = 0; i < SCI_MAX_PHYS; i++)
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scic_user_parameters.sds1.phys[i].max_speed_generation =
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(uint8_t)tunable;
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scic_user_parameters_set(scic_controller_handle, &scic_user_parameters);
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/* Scheduler bug in SCU requires SCIL to reserve some task contexts as a
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* a workaround - one per domain.
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*/
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controller->queue_depth = SCI_MAX_IO_REQUESTS - SCI_MAX_DOMAINS;
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if (TUNABLE_INT_FETCH("hw.isci.controller_queue_depth",
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&controller->queue_depth)) {
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controller->queue_depth = max(1, min(controller->queue_depth,
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SCI_MAX_IO_REQUESTS - SCI_MAX_DOMAINS));
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}
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/* Reserve one request so that we can ensure we have one available TC
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* to do internal device resets.
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*/
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controller->sim_queue_depth = controller->queue_depth - 1;
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/* Although we save one TC to do internal device resets, it is possible
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* we could end up using several TCs for simultaneous device resets
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* while at the same time having CAM fill our controller queue. To
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* simulate this condition, and how our driver handles it, we can set
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* this io_shortage parameter, which will tell CAM that we have a
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* large queue depth than we really do.
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*/
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io_shortage = 0;
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TUNABLE_INT_FETCH("hw.isci.io_shortage", &io_shortage);
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controller->sim_queue_depth += io_shortage;
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fail_on_timeout = 1;
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TUNABLE_INT_FETCH("hw.isci.fail_on_task_timeout", &fail_on_timeout);
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/* Attach to CAM using xpt_bus_register now, then immediately freeze
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* the simq. It will get released later when initial domain discovery
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* is complete.
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*/
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controller->has_been_scanned = FALSE;
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mtx_lock(&controller->lock);
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isci_controller_attach_to_cam(controller);
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xpt_freeze_simq(controller->sim, 1);
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mtx_unlock(&controller->lock);
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for (i = 0; i < SCI_MAX_PHYS; i++) {
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controller->phys[i].handle = scic_controller_handle;
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controller->phys[i].index = i;
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/* fault */
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controller->phys[i].led_fault = 0;
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sprintf(led_name, "isci.bus%d.port%d.fault", controller->index, i);
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controller->phys[i].cdev_fault = led_create(isci_led_fault_func,
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&controller->phys[i], led_name);
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/* locate */
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controller->phys[i].led_locate = 0;
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sprintf(led_name, "isci.bus%d.port%d.locate", controller->index, i);
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controller->phys[i].cdev_locate = led_create(isci_led_locate_func,
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&controller->phys[i], led_name);
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}
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return (scif_controller_initialize(controller->scif_controller_handle));
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}
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|
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int isci_controller_allocate_memory(struct ISCI_CONTROLLER *controller)
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{
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int error;
|
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device_t device = controller->isci->device;
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uint32_t max_segment_size = isci_io_request_get_max_io_size();
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uint32_t status = 0;
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struct ISCI_MEMORY *uncached_controller_memory =
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&controller->uncached_controller_memory;
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struct ISCI_MEMORY *cached_controller_memory =
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&controller->cached_controller_memory;
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struct ISCI_MEMORY *request_memory =
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&controller->request_memory;
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POINTER_UINT virtual_address;
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bus_addr_t physical_address;
|
|
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controller->mdl = sci_controller_get_memory_descriptor_list_handle(
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controller->scif_controller_handle);
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uncached_controller_memory->size = sci_mdl_decorator_get_memory_size(
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controller->mdl, SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS);
|
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|
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error = isci_allocate_dma_buffer(device, uncached_controller_memory);
|
|
|
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if (error != 0)
|
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return (error);
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sci_mdl_decorator_assign_memory( controller->mdl,
|
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SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS,
|
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uncached_controller_memory->virtual_address,
|
|
uncached_controller_memory->physical_address);
|
|
|
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cached_controller_memory->size = sci_mdl_decorator_get_memory_size(
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controller->mdl,
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SCI_MDE_ATTRIBUTE_CACHEABLE | SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS
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);
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error = isci_allocate_dma_buffer(device, cached_controller_memory);
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|
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if (error != 0)
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return (error);
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sci_mdl_decorator_assign_memory(controller->mdl,
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SCI_MDE_ATTRIBUTE_CACHEABLE | SCI_MDE_ATTRIBUTE_PHYSICALLY_CONTIGUOUS,
|
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cached_controller_memory->virtual_address,
|
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cached_controller_memory->physical_address);
|
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request_memory->size =
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controller->queue_depth * isci_io_request_get_object_size();
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|
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error = isci_allocate_dma_buffer(device, request_memory);
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|
|
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if (error != 0)
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return (error);
|
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|
|
/* For STP PIO testing, we want to ensure we can force multiple SGLs
|
|
* since this has been a problem area in SCIL. This tunable parameter
|
|
* will allow us to force DMA segments to a smaller size, ensuring
|
|
* that even if a physically contiguous buffer is attached to this
|
|
* I/O, the DMA subsystem will pass us multiple segments in our DMA
|
|
* load callback.
|
|
*/
|
|
TUNABLE_INT_FETCH("hw.isci.max_segment_size", &max_segment_size);
|
|
|
|
/* Create DMA tag for our I/O requests. Then we can create DMA maps based off
|
|
* of this tag and store them in each of our ISCI_IO_REQUEST objects. This
|
|
* will enable better performance than creating the DMA maps everytime we get
|
|
* an I/O.
|
|
*/
|
|
status = bus_dma_tag_create(bus_get_dma_tag(device), 0x1, 0x0,
|
|
BUS_SPACE_MAXADDR, BUS_SPACE_MAXADDR, NULL, NULL,
|
|
isci_io_request_get_max_io_size(),
|
|
SCI_MAX_SCATTER_GATHER_ELEMENTS, max_segment_size, 0, NULL, NULL,
|
|
&controller->buffer_dma_tag);
|
|
|
|
sci_pool_initialize(controller->request_pool);
|
|
|
|
virtual_address = request_memory->virtual_address;
|
|
physical_address = request_memory->physical_address;
|
|
|
|
for (int i = 0; i < controller->queue_depth; i++) {
|
|
struct ISCI_REQUEST *request =
|
|
(struct ISCI_REQUEST *)virtual_address;
|
|
|
|
isci_request_construct(request,
|
|
controller->scif_controller_handle,
|
|
controller->buffer_dma_tag, physical_address);
|
|
|
|
sci_pool_put(controller->request_pool, request);
|
|
|
|
virtual_address += isci_request_get_object_size();
|
|
physical_address += isci_request_get_object_size();
|
|
}
|
|
|
|
uint32_t remote_device_size = sizeof(struct ISCI_REMOTE_DEVICE) +
|
|
scif_remote_device_get_object_size();
|
|
|
|
controller->remote_device_memory = (uint8_t *) malloc(
|
|
remote_device_size * SCI_MAX_REMOTE_DEVICES, M_ISCI,
|
|
M_NOWAIT | M_ZERO);
|
|
|
|
sci_pool_initialize(controller->remote_device_pool);
|
|
|
|
uint8_t *remote_device_memory_ptr = controller->remote_device_memory;
|
|
|
|
for (int i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) {
|
|
struct ISCI_REMOTE_DEVICE *remote_device =
|
|
(struct ISCI_REMOTE_DEVICE *)remote_device_memory_ptr;
|
|
|
|
controller->remote_device[i] = NULL;
|
|
remote_device->index = i;
|
|
remote_device->is_resetting = FALSE;
|
|
remote_device->frozen_lun_mask = 0;
|
|
sci_fast_list_element_init(remote_device,
|
|
&remote_device->pending_device_reset_element);
|
|
TAILQ_INIT(&remote_device->queued_ccbs);
|
|
remote_device->release_queued_ccb = FALSE;
|
|
remote_device->queued_ccb_in_progress = NULL;
|
|
|
|
/*
|
|
* For the first SCI_MAX_DOMAINS device objects, do not put
|
|
* them in the pool, rather assign them to each domain. This
|
|
* ensures that any device attached directly to port "i" will
|
|
* always get CAM target id "i".
|
|
*/
|
|
if (i < SCI_MAX_DOMAINS)
|
|
controller->domain[i].da_remote_device = remote_device;
|
|
else
|
|
sci_pool_put(controller->remote_device_pool,
|
|
remote_device);
|
|
remote_device_memory_ptr += remote_device_size;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
void isci_controller_start(void *controller_handle)
|
|
{
|
|
struct ISCI_CONTROLLER *controller =
|
|
(struct ISCI_CONTROLLER *)controller_handle;
|
|
SCI_CONTROLLER_HANDLE_T scif_controller_handle =
|
|
controller->scif_controller_handle;
|
|
|
|
scif_controller_start(scif_controller_handle,
|
|
scif_controller_get_suggested_start_timeout(scif_controller_handle));
|
|
|
|
scic_controller_enable_interrupts(
|
|
scif_controller_get_scic_handle(controller->scif_controller_handle));
|
|
}
|
|
|
|
void isci_controller_domain_discovery_complete(
|
|
struct ISCI_CONTROLLER *isci_controller, struct ISCI_DOMAIN *isci_domain)
|
|
{
|
|
if (!isci_controller->has_been_scanned)
|
|
{
|
|
/* Controller has not been scanned yet. We'll clear
|
|
* the discovery bit for this domain, then check if all bits
|
|
* are now clear. That would indicate that all domains are
|
|
* done with discovery and we can then proceed with initial
|
|
* scan.
|
|
*/
|
|
|
|
isci_controller->initial_discovery_mask &=
|
|
~(1 << isci_domain->index);
|
|
|
|
if (isci_controller->initial_discovery_mask == 0) {
|
|
struct isci_softc *driver = isci_controller->isci;
|
|
uint8_t next_index = isci_controller->index + 1;
|
|
|
|
isci_controller->has_been_scanned = TRUE;
|
|
|
|
/* Unfreeze simq to allow initial scan to proceed. */
|
|
xpt_release_simq(isci_controller->sim, TRUE);
|
|
|
|
#if __FreeBSD_version < 800000
|
|
/* When driver is loaded after boot, we need to
|
|
* explicitly rescan here for versions <8.0, because
|
|
* CAM only automatically scans new buses at boot
|
|
* time.
|
|
*/
|
|
union ccb *ccb = xpt_alloc_ccb_nowait();
|
|
|
|
xpt_create_path(&ccb->ccb_h.path, NULL,
|
|
cam_sim_path(isci_controller->sim),
|
|
CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD);
|
|
|
|
xpt_rescan(ccb);
|
|
#endif
|
|
|
|
if (next_index < driver->controller_count) {
|
|
/* There are more controllers that need to
|
|
* start. So start the next one.
|
|
*/
|
|
isci_controller_start(
|
|
&driver->controllers[next_index]);
|
|
}
|
|
else
|
|
{
|
|
/* All controllers have been started and completed discovery.
|
|
* Disestablish the config hook while will signal to the
|
|
* kernel during boot that it is safe to try to find and
|
|
* mount the root partition.
|
|
*/
|
|
config_intrhook_disestablish(
|
|
&driver->config_hook);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
int isci_controller_attach_to_cam(struct ISCI_CONTROLLER *controller)
|
|
{
|
|
struct isci_softc *isci = controller->isci;
|
|
device_t parent = device_get_parent(isci->device);
|
|
int unit = device_get_unit(isci->device);
|
|
struct cam_devq *isci_devq = cam_simq_alloc(controller->sim_queue_depth);
|
|
|
|
if(isci_devq == NULL) {
|
|
isci_log_message(0, "ISCI", "isci_devq is NULL \n");
|
|
return (-1);
|
|
}
|
|
|
|
controller->sim = cam_sim_alloc(isci_action, isci_poll, "isci",
|
|
controller, unit, &controller->lock, controller->sim_queue_depth,
|
|
controller->sim_queue_depth, isci_devq);
|
|
|
|
if(controller->sim == NULL) {
|
|
isci_log_message(0, "ISCI", "cam_sim_alloc... fails\n");
|
|
cam_simq_free(isci_devq);
|
|
return (-1);
|
|
}
|
|
|
|
if(xpt_bus_register(controller->sim, parent, controller->index)
|
|
!= CAM_SUCCESS) {
|
|
isci_log_message(0, "ISCI", "xpt_bus_register...fails \n");
|
|
cam_sim_free(controller->sim, TRUE);
|
|
mtx_unlock(&controller->lock);
|
|
return (-1);
|
|
}
|
|
|
|
if(xpt_create_path(&controller->path, NULL,
|
|
cam_sim_path(controller->sim), CAM_TARGET_WILDCARD,
|
|
CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
|
|
isci_log_message(0, "ISCI", "xpt_create_path....fails\n");
|
|
xpt_bus_deregister(cam_sim_path(controller->sim));
|
|
cam_sim_free(controller->sim, TRUE);
|
|
mtx_unlock(&controller->lock);
|
|
return (-1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
void isci_poll(struct cam_sim *sim)
|
|
{
|
|
struct ISCI_CONTROLLER *controller =
|
|
(struct ISCI_CONTROLLER *)cam_sim_softc(sim);
|
|
|
|
isci_interrupt_poll_handler(controller);
|
|
}
|
|
|
|
void isci_action(struct cam_sim *sim, union ccb *ccb)
|
|
{
|
|
struct ISCI_CONTROLLER *controller =
|
|
(struct ISCI_CONTROLLER *)cam_sim_softc(sim);
|
|
|
|
switch ( ccb->ccb_h.func_code ) {
|
|
case XPT_PATH_INQ:
|
|
{
|
|
struct ccb_pathinq *cpi = &ccb->cpi;
|
|
int bus = cam_sim_bus(sim);
|
|
ccb->ccb_h.ccb_sim_ptr = sim;
|
|
cpi->version_num = 1;
|
|
cpi->hba_inquiry = PI_TAG_ABLE;
|
|
cpi->target_sprt = 0;
|
|
cpi->hba_misc = PIM_NOBUSRESET | PIM_SEQSCAN |
|
|
PIM_UNMAPPED;
|
|
cpi->hba_eng_cnt = 0;
|
|
cpi->max_target = SCI_MAX_REMOTE_DEVICES - 1;
|
|
cpi->max_lun = ISCI_MAX_LUN;
|
|
#if __FreeBSD_version >= 800102
|
|
cpi->maxio = isci_io_request_get_max_io_size();
|
|
#endif
|
|
cpi->unit_number = cam_sim_unit(sim);
|
|
cpi->bus_id = bus;
|
|
cpi->initiator_id = SCI_MAX_REMOTE_DEVICES;
|
|
cpi->base_transfer_speed = 300000;
|
|
strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
|
|
strncpy(cpi->hba_vid, "Intel Corp.", HBA_IDLEN);
|
|
strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
|
|
cpi->transport = XPORT_SAS;
|
|
cpi->transport_version = 0;
|
|
cpi->protocol = PROTO_SCSI;
|
|
cpi->protocol_version = SCSI_REV_SPC2;
|
|
cpi->ccb_h.status = CAM_REQ_CMP;
|
|
xpt_done(ccb);
|
|
}
|
|
break;
|
|
case XPT_GET_TRAN_SETTINGS:
|
|
{
|
|
struct ccb_trans_settings *general_settings = &ccb->cts;
|
|
struct ccb_trans_settings_sas *sas_settings =
|
|
&general_settings->xport_specific.sas;
|
|
struct ccb_trans_settings_scsi *scsi_settings =
|
|
&general_settings->proto_specific.scsi;
|
|
struct ISCI_REMOTE_DEVICE *remote_device;
|
|
|
|
remote_device = controller->remote_device[ccb->ccb_h.target_id];
|
|
|
|
if (remote_device == NULL) {
|
|
ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
|
|
ccb->ccb_h.status &= ~CAM_STATUS_MASK;
|
|
ccb->ccb_h.status |= CAM_DEV_NOT_THERE;
|
|
xpt_done(ccb);
|
|
break;
|
|
}
|
|
|
|
general_settings->protocol = PROTO_SCSI;
|
|
general_settings->transport = XPORT_SAS;
|
|
general_settings->protocol_version = SCSI_REV_SPC2;
|
|
general_settings->transport_version = 0;
|
|
scsi_settings->valid = CTS_SCSI_VALID_TQ;
|
|
scsi_settings->flags = CTS_SCSI_FLAGS_TAG_ENB;
|
|
ccb->ccb_h.status &= ~CAM_STATUS_MASK;
|
|
ccb->ccb_h.status |= CAM_REQ_CMP;
|
|
|
|
sas_settings->bitrate =
|
|
isci_remote_device_get_bitrate(remote_device);
|
|
|
|
if (sas_settings->bitrate != 0)
|
|
sas_settings->valid = CTS_SAS_VALID_SPEED;
|
|
|
|
xpt_done(ccb);
|
|
}
|
|
break;
|
|
case XPT_SCSI_IO:
|
|
isci_io_request_execute_scsi_io(ccb, controller);
|
|
break;
|
|
#if __FreeBSD_version >= 900026
|
|
case XPT_SMP_IO:
|
|
isci_io_request_execute_smp_io(ccb, controller);
|
|
break;
|
|
#endif
|
|
case XPT_SET_TRAN_SETTINGS:
|
|
ccb->ccb_h.status &= ~CAM_STATUS_MASK;
|
|
ccb->ccb_h.status |= CAM_REQ_CMP;
|
|
xpt_done(ccb);
|
|
break;
|
|
case XPT_CALC_GEOMETRY:
|
|
cam_calc_geometry(&ccb->ccg, /*extended*/1);
|
|
xpt_done(ccb);
|
|
break;
|
|
case XPT_RESET_DEV:
|
|
{
|
|
struct ISCI_REMOTE_DEVICE *remote_device =
|
|
controller->remote_device[ccb->ccb_h.target_id];
|
|
|
|
if (remote_device != NULL)
|
|
isci_remote_device_reset(remote_device, ccb);
|
|
else {
|
|
ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
|
|
ccb->ccb_h.status &= ~CAM_STATUS_MASK;
|
|
ccb->ccb_h.status |= CAM_DEV_NOT_THERE;
|
|
xpt_done(ccb);
|
|
}
|
|
}
|
|
break;
|
|
case XPT_RESET_BUS:
|
|
ccb->ccb_h.status = CAM_REQ_CMP;
|
|
xpt_done(ccb);
|
|
break;
|
|
default:
|
|
isci_log_message(0, "ISCI", "Unhandled func_code 0x%x\n",
|
|
ccb->ccb_h.func_code);
|
|
ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
|
|
ccb->ccb_h.status &= ~CAM_STATUS_MASK;
|
|
ccb->ccb_h.status |= CAM_REQ_INVALID;
|
|
xpt_done(ccb);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Unfortunately, SCIL doesn't cleanly handle retry conditions.
|
|
* CAM_REQUEUE_REQ works only when no one is using the pass(4) interface. So
|
|
* when SCIL denotes an I/O needs to be retried (typically because of mixing
|
|
* tagged/non-tagged ATA commands, or running out of NCQ slots), we queue
|
|
* these I/O internally. Once SCIL completes an I/O to this device, or we get
|
|
* a ready notification, we will retry the first I/O on the queue.
|
|
* Unfortunately, SCIL also doesn't cleanly handle starting the new I/O within
|
|
* the context of the completion handler, so we need to retry these I/O after
|
|
* the completion handler is done executing.
|
|
*/
|
|
void
|
|
isci_controller_release_queued_ccbs(struct ISCI_CONTROLLER *controller)
|
|
{
|
|
struct ISCI_REMOTE_DEVICE *dev;
|
|
struct ccb_hdr *ccb_h;
|
|
int dev_idx;
|
|
|
|
KASSERT(mtx_owned(&controller->lock), ("controller lock not owned"));
|
|
|
|
controller->release_queued_ccbs = FALSE;
|
|
for (dev_idx = 0;
|
|
dev_idx < SCI_MAX_REMOTE_DEVICES;
|
|
dev_idx++) {
|
|
|
|
dev = controller->remote_device[dev_idx];
|
|
if (dev != NULL &&
|
|
dev->release_queued_ccb == TRUE &&
|
|
dev->queued_ccb_in_progress == NULL) {
|
|
dev->release_queued_ccb = FALSE;
|
|
ccb_h = TAILQ_FIRST(&dev->queued_ccbs);
|
|
|
|
if (ccb_h == NULL)
|
|
continue;
|
|
|
|
isci_log_message(1, "ISCI", "release %p %x\n", ccb_h,
|
|
((union ccb *)ccb_h)->csio.cdb_io.cdb_bytes[0]);
|
|
|
|
dev->queued_ccb_in_progress = (union ccb *)ccb_h;
|
|
isci_io_request_execute_scsi_io(
|
|
(union ccb *)ccb_h, controller);
|
|
}
|
|
}
|
|
}
|