Driver and controller initialization.
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
---
drivers/scsi/isci/Makefile | 30 ++
drivers/scsi/isci/host.c | 781 ++++++++++++++++++++++++++++++++++++++++++++
drivers/scsi/isci/host.h | 283 ++++++++++++++++
drivers/scsi/isci/init.c | 613 +++++++++++++++++++++++++++++++++++
drivers/scsi/isci/isci.h | 138 ++++++++
5 files changed, 1845 insertions(+), 0 deletions(-)
create mode 100644 drivers/scsi/isci/Makefile
create mode 100644 drivers/scsi/isci/host.c
create mode 100644 drivers/scsi/isci/host.h
create mode 100644 drivers/scsi/isci/init.c
create mode 100644 drivers/scsi/isci/isci.h
diff --git a/drivers/scsi/isci/Makefile b/drivers/scsi/isci/Makefile
new file mode 100644
index 0000000..34f7af3
--- /dev/null
+++ b/drivers/scsi/isci/Makefile
@@ -0,0 +1,30 @@
+#TODO kill SCIC_SDS_4_ENABLED it is always true for this
+#generation of silicon
+EXTRA_CFLAGS += -DSCIC_SDS_4_ENABLED
+
+#temporary until atapi support ready
+EXTRA_CFLAGS += -DDISABLE_ATAPI
+
+EXTRA_CFLAGS += -Idrivers/scsi/isci/core/ -Idrivers/scsi/isci/
+obj-$(CONFIG_SCSI_ISCI) += isci.o
+isci-objs := init.o phy.o request.o sata.o \
+ remote_device.o port.o timers.o deprecated.o \
+ host.o task.o events.o \
+ core/scic_sds_controller.o \
+ core/scic_sds_remote_device.o \
+ core/scic_sds_request.o \
+ core/scic_sds_stp_request.o \
+ core/scic_sds_stp_packet_request.o \
+ core/scic_sds_stp_remote_device.o \
+ core/scic_sds_port.o \
+ core/scic_sds_port_configuration_agent.o \
+ core/scic_sds_phy.o \
+ core/scic_sds_ssp_request.o \
+ core/scic_sds_remote_node_context.o \
+ core/scic_sds_smp_request.o \
+ core/scic_sds_smp_remote_device.o \
+ core/scic_sds_remote_node_table.o \
+ core/scic_sds_unsolicited_frame_control.o \
+ core/sci_base_memory_descriptor_list.o \
+ core/sci_base_state_machine.o \
+ core/sci_util.o
diff --git a/drivers/scsi/isci/host.c b/drivers/scsi/isci/host.c
new file mode 100644
index 0000000..6f16f4d
--- /dev/null
+++ b/drivers/scsi/isci/host.c
@@ -0,0 +1,781 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * 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.
+ * * Neither the name of Intel Corporation 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. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "isci.h"
+#include "scic_io_request.h"
+#include "scic_remote_device.h"
+#include "scic_port.h"
+
+#include "port.h"
+#include "request.h"
+#include "host.h"
+
+/**
+ * isci_isr() - This function is the interrupt service routine for the
+ * controller. It schedules the tasklet and returns.
+ * @vec: This parameter specifies the interrupt vector.
+ * @data: This parameter specifies the ISCI host object.
+ *
+ * IRQ_HANDLED if out interrupt otherwise, IRQ_NONE
+ */
+irqreturn_t isci_isr(int vec, void *data)
+{
+ struct isci_host *isci_host
+ = (struct isci_host *)data;
+ struct scic_controller_handler_methods *handlers
+ = &isci_host->scic_irq_handlers[SCI_MSIX_NORMAL_VECTOR];
+ irqreturn_t ret = IRQ_NONE;
+
+ if (isci_host_get_state(isci_host) != isci_starting
+ && handlers->interrupt_handler) {
+
+ if (handlers->interrupt_handler(isci_host->core_controller)) {
+ if (isci_host_get_state(isci_host) != isci_stopped) {
+ tasklet_schedule(
+ &isci_host->completion_tasklet);
+ } else
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: controller stopped\n",
+ __func__);
+ ret = IRQ_HANDLED;
+ }
+ } else
+ dev_warn(&isci_host->pdev->dev,
+ "%s: get_handler_methods failed, "
+ "isci_host->status = 0x%x\n",
+ __func__,
+ isci_host_get_state(isci_host));
+
+ return ret;
+}
+
+irqreturn_t isci_legacy_isr(int vec, void *data)
+{
+ struct pci_dev *pdev = data;
+ struct isci_host *isci_host;
+ struct scic_controller_handler_methods *handlers;
+ irqreturn_t ret = IRQ_NONE;
+
+ /*
+ * Since this is a legacy interrupt, either or both
+ * controllers could have triggered it. Thus, we have to call
+ * the legacy interrupt handler for all controllers on the
+ * PCI function.
+ */
+ for_each_isci_host(isci_host, pdev) {
+ handlers = &isci_host->scic_irq_handlers[SCI_MSIX_NORMAL_VECTOR];
+
+ if (isci_host_get_state(isci_host) != isci_starting
+ && handlers->interrupt_handler) {
+
+ if (handlers->interrupt_handler(isci_host->core_controller)) {
+ if (isci_host_get_state(isci_host) != isci_stopped) {
+ tasklet_schedule(
+ &isci_host->completion_tasklet);
+ } else
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: controller stopped\n",
+ __func__);
+ ret = IRQ_HANDLED;
+ }
+ } else
+ dev_warn(&isci_host->pdev->dev,
+ "%s: get_handler_methods failed, "
+ "isci_host->status = 0x%x\n",
+ __func__,
+ isci_host_get_state(isci_host));
+ }
+ return ret;
+}
+
+
+/**
+ * isci_host_start_complete() - This function is called by the core library,
+ * through the ISCI Module, to indicate controller start status.
+ * @isci_host: This parameter specifies the ISCI host object
+ * @completion_status: This parameter specifies the completion status from the
+ * core library.
+ *
+ */
+void isci_host_start_complete(
+ struct isci_host *isci_host,
+ enum sci_status completion_status)
+{
+ if (completion_status == SCI_SUCCESS) {
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: completion_status: SCI_SUCCESS\n", __func__);
+ isci_host_change_state(isci_host, isci_ready);
+ complete_all(&isci_host->start_complete);
+ } else
+ dev_err(&isci_host->pdev->dev,
+ "controller start failed with "
+ "completion_status = 0x%x;",
+ completion_status);
+
+}
+
+
+
+/**
+ * isci_host_scan_finished() - This function is one of the SCSI Host Template
+ * functions. The SCSI midlayer calls this function during a target scan,
+ * approx. once every 10 millisecs.
+ * @shost: This parameter specifies the SCSI host being scanned
+ * @time: This parameter specifies the number of ticks since the scan started.
+ *
+ * scan status, zero indicates the SCSI midlayer should continue to poll,
+ * otherwise assume controller is ready.
+ */
+int isci_host_scan_finished(
+ struct Scsi_Host *shost,
+ unsigned long time)
+{
+ struct isci_host *isci_host
+ = isci_host_from_sas_ha(SHOST_TO_SAS_HA(shost));
+
+ struct scic_controller_handler_methods *handlers
+ = &isci_host->scic_irq_handlers[SCI_MSIX_NORMAL_VECTOR];
+
+ if (handlers->interrupt_handler == NULL) {
+ dev_err(&isci_host->pdev->dev,
+ "%s: scic_controller_get_handler_methods failed\n",
+ __func__);
+ return 1;
+ }
+
+ /**
+ * check interrupt_handler's status and call completion_handler if true,
+ * link_up events should be coming from the scu core lib, as phy's come
+ * online. for each link_up from the core, call
+ * get_received_identify_address_frame, copy the frame into the
+ * sas_phy object and call libsas notify_port_event(PORTE_BYTES_DMAED).
+ * continue to return zero from thee scan_finished routine until
+ * the scic_cb_controller_start_complete() call comes from the core.
+ **/
+ if (handlers->interrupt_handler(isci_host->core_controller))
+ handlers->completion_handler(isci_host->core_controller);
+
+ if (isci_starting == isci_host_get_state(isci_host)
+ && time < (HZ * 10)) {
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_host->status = %d, time = %ld\n",
+ __func__, isci_host_get_state(isci_host), time);
+ return 0;
+ }
+
+
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_host->status = %d, time = %ld\n",
+ __func__, isci_host_get_state(isci_host), time);
+
+ scic_controller_enable_interrupts(isci_host->core_controller);
+
+ return 1;
+
+}
+
+
+/**
+ * isci_host_scan_start() - This function is one of the SCSI Host Template
+ * function, called by the SCSI mid layer berfore a target scan begins. The
+ * core library controller start routine is called from here.
+ * @shost: This parameter specifies the SCSI host to be scanned
+ *
+ */
+void isci_host_scan_start(struct Scsi_Host *shost)
+{
+ struct isci_host *isci_host;
+
+ isci_host = isci_host_from_sas_ha(SHOST_TO_SAS_HA(shost));
+ isci_host_change_state(isci_host, isci_starting);
+
+ scic_controller_disable_interrupts(isci_host->core_controller);
+ init_completion(&isci_host->start_complete);
+ scic_controller_start(
+ isci_host->core_controller,
+ scic_controller_get_suggested_start_timeout(
+ isci_host->core_controller)
+ );
+}
+
+void isci_host_stop_complete(
+ struct isci_host *isci_host,
+ enum sci_status completion_status)
+{
+ isci_host_change_state(isci_host, isci_stopped);
+ scic_controller_disable_interrupts(
+ isci_host->core_controller
+ );
+ complete(&isci_host->stop_complete);
+}
+
+static struct coherent_memory_info *isci_host_alloc_mdl_struct(
+ struct isci_host *isci_host,
+ u32 size)
+{
+ struct coherent_memory_info *mdl_struct;
+ void *uncached_address = NULL;
+
+
+ mdl_struct = devm_kzalloc(&isci_host->pdev->dev,
+ sizeof(*mdl_struct),
+ GFP_KERNEL);
+ if (!mdl_struct)
+ return NULL;
+
+ INIT_LIST_HEAD(&mdl_struct->node);
+
+ uncached_address = dmam_alloc_coherent(&isci_host->pdev->dev,
+ size,
+ &mdl_struct->dma_handle,
+ GFP_KERNEL);
+ if (!uncached_address)
+ return NULL;
+
+ /* memset the whole memory area. */
+ memset((char *)uncached_address, 0, size);
+ mdl_struct->vaddr = uncached_address;
+ mdl_struct->size = (size_t)size;
+
+ return mdl_struct;
+}
+
+static void isci_host_build_mde(
+ struct sci_physical_memory_descriptor *mde_struct,
+ struct coherent_memory_info *mdl_struct)
+{
+ unsigned long address = 0;
+ dma_addr_t dma_addr = 0;
+
+ address = (unsigned long)mdl_struct->vaddr;
+ dma_addr = mdl_struct->dma_handle;
+
+ /* to satisfy the alignment. */
+ if ((address % mde_struct->constant_memory_alignment) != 0) {
+ int align_offset
+ = (mde_struct->constant_memory_alignment
+ - (address % mde_struct->constant_memory_alignment));
+ address += align_offset;
+ dma_addr += align_offset;
+ }
+
+ mde_struct->virtual_address = (void *)address;
+ mde_struct->physical_address = dma_addr;
+ mdl_struct->mde = mde_struct;
+}
+
+static int isci_host_mdl_allocate_coherent(
+ struct isci_host *isci_host)
+{
+ struct sci_physical_memory_descriptor *current_mde;
+ struct coherent_memory_info *mdl_struct;
+ u32 size = 0;
+
+ struct sci_base_memory_descriptor_list *mdl_handle
+ = sci_controller_get_memory_descriptor_list_handle(
+ isci_host->core_controller);
+
+ sci_mdl_first_entry(mdl_handle);
+
+ current_mde = sci_mdl_get_current_entry(mdl_handle);
+
+ while (current_mde != NULL) {
+
+ size = (current_mde->constant_memory_size
+ + current_mde->constant_memory_alignment);
+
+ mdl_struct = isci_host_alloc_mdl_struct(isci_host, size);
+ if (!mdl_struct)
+ return -ENOMEM;
+
+ list_add_tail(&mdl_struct->node, &isci_host->mdl_struct_list);
+
+ isci_host_build_mde(current_mde, mdl_struct);
+
+ sci_mdl_next_entry(mdl_handle);
+ current_mde = sci_mdl_get_current_entry(mdl_handle);
+ }
+
+ return 0;
+}
+
+
+/**
+ * isci_host_completion_routine() - This function is the delayed service
+ * routine that calls the sci core library's completion handler. It's
+ * scheduled as a tasklet from the interrupt service routine when interrupts
+ * in use, or set as the timeout function in polled mode.
+ * @data: This parameter specifies the ISCI host object
+ *
+ */
+static void isci_host_completion_routine(unsigned long data)
+{
+ struct isci_host *isci_host = (struct isci_host *)data;
+ struct scic_controller_handler_methods *handlers
+ = &isci_host->scic_irq_handlers[SCI_MSIX_NORMAL_VECTOR];
+ struct list_head completed_request_list;
+ struct list_head aborted_request_list;
+ struct list_head *current_position;
+ struct list_head *next_position;
+ struct isci_request *request;
+ struct isci_request *next_request;
+ struct sas_task *task;
+
+ INIT_LIST_HEAD(&completed_request_list);
+ INIT_LIST_HEAD(&aborted_request_list);
+
+ spin_lock_irq(&isci_host->scic_lock);
+
+ if (handlers->completion_handler) {
+ handlers->completion_handler(
+ isci_host->core_controller
+ );
+ }
+ /* Take the lists of completed I/Os from the host. */
+ list_splice_init(&isci_host->requests_to_complete,
+ &completed_request_list);
+
+ list_splice_init(&isci_host->requests_to_abort,
+ &aborted_request_list);
+
+ spin_unlock_irq(&isci_host->scic_lock);
+
+ /* Process any completions in the lists. */
+ list_for_each_safe(current_position, next_position,
+ &completed_request_list) {
+
+ request = list_entry(current_position, struct isci_request,
+ completed_node);
+ task = isci_request_access_task(request);
+
+ /* Normal notification (task_done) */
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: Normal - request/task = %p/%p\n",
+ __func__,
+ request,
+ task);
+
+ task->task_done(task);
+ task->lldd_task = NULL;
+
+ /* Free the request object. */
+ isci_request_free(isci_host, request);
+ }
+ list_for_each_entry_safe(request, next_request, &aborted_request_list,
+ completed_node) {
+
+ task = isci_request_access_task(request);
+
+ /* Use sas_task_abort */
+ dev_warn(&isci_host->pdev->dev,
+ "%s: Error - request/task = %p/%p\n",
+ __func__,
+ request,
+ task);
+
+ /* Put the task into the abort path. */
+ sas_task_abort(task);
+ }
+
+}
+
+void isci_host_deinit(
+ struct isci_host *isci_host)
+{
+ int i;
+
+ isci_host_change_state(isci_host, isci_stopping);
+ for (i = 0; i < SCI_MAX_PORTS; i++) {
+ struct isci_port *port = &isci_host->isci_ports[i];
+ struct isci_remote_device *device, *tmpdev;
+ list_for_each_entry_safe(device, tmpdev,
+ &port->remote_dev_list, node) {
+ isci_remote_device_change_state(device, isci_stopping);
+ isci_remote_device_stop(device);
+ }
+ }
+
+ /* stop the comtroller and wait for completion. */
+ init_completion(&isci_host->stop_complete);
+ scic_controller_stop(
+ isci_host->core_controller,
+ SCIC_CONTROLLER_STOP_TIMEOUT
+ );
+ wait_for_completion(&isci_host->stop_complete);
+ /* next, reset the controller. */
+ scic_controller_reset(isci_host->core_controller);
+}
+
+static int isci_verify_firmware(const struct firmware *fw,
+ struct isci_firmware *isci_fw)
+{
+ const u8 *tmp;
+
+ if (fw->size < ISCI_FIRMWARE_MIN_SIZE)
+ return -EINVAL;
+
+ tmp = fw->data;
+
+ /* 12th char should be the NULL terminate for the ID string */
+ if (tmp[11] != '\0')
+ return -EINVAL;
+
+ if (strncmp("#SCU MAGIC#", tmp, 11) != 0)
+ return -EINVAL;
+
+ isci_fw->id = tmp;
+ isci_fw->version = fw->data[ISCI_FW_VER_OFS];
+ isci_fw->subversion = fw->data[ISCI_FW_SUBVER_OFS];
+
+ tmp = fw->data + ISCI_FW_DATA_OFS;
+
+ while (*tmp != ISCI_FW_HDR_EOF) {
+ switch (*tmp) {
+ case ISCI_FW_HDR_PHYMASK:
+ tmp++;
+ isci_fw->phy_masks_size = *tmp;
+ tmp++;
+ isci_fw->phy_masks = (const u32 *)tmp;
+ tmp += sizeof(u32) * isci_fw->phy_masks_size;
+ break;
+
+ case ISCI_FW_HDR_PHYGEN:
+ tmp++;
+ isci_fw->phy_gens_size = *tmp;
+ tmp++;
+ isci_fw->phy_gens = (const u32 *)tmp;
+ tmp += sizeof(u32) * isci_fw->phy_gens_size;
+ break;
+
+ case ISCI_FW_HDR_SASADDR:
+ tmp++;
+ isci_fw->sas_addrs_size = *tmp;
+ tmp++;
+ isci_fw->sas_addrs = (const u64 *)tmp;
+ tmp += sizeof(u64) * isci_fw->sas_addrs_size;
+ break;
+
+ default:
+ pr_err("bad field in firmware binary blob\n");
+ return -EINVAL;
+ }
+ }
+
+ pr_info("isci firmware v%u.%u loaded.\n",
+ isci_fw->version, isci_fw->subversion);
+
+ return SCI_SUCCESS;
+}
+
+static void __iomem *scu_base(struct isci_host *isci_host)
+{
+ struct pci_dev *pdev = isci_host->pdev;
+ int id = isci_host->id;
+
+ return pcim_iomap_table(pdev)[SCI_SCU_BAR * 2] + SCI_SCU_BAR_SIZE * id;
+}
+
+static void __iomem *smu_base(struct isci_host *isci_host)
+{
+ struct pci_dev *pdev = isci_host->pdev;
+ int id = isci_host->id;
+
+ return pcim_iomap_table(pdev)[SCI_SMU_BAR * 2] + SCI_SMU_BAR_SIZE * id;
+}
+
+#define SCI_MAX_TIMER_COUNT 25
+
+int isci_host_init(struct isci_host *isci_host)
+{
+ int err = 0;
+ int index = 0;
+ enum sci_status status;
+ struct scic_sds_controller *controller;
+ struct scic_sds_port *scic_port;
+ struct scic_controller_handler_methods *handlers
+ = &isci_host->scic_irq_handlers[0];
+ union scic_oem_parameters scic_oem_params;
+ union scic_user_parameters scic_user_params;
+ const struct firmware *fw = NULL;
+ struct isci_firmware *isci_fw = NULL;
+
+ INIT_LIST_HEAD(&isci_host->timer_list_struct.timers);
+ isci_timer_list_construct(
+ &isci_host->timer_list_struct,
+ SCI_MAX_TIMER_COUNT
+ );
+
+ controller = scic_controller_alloc(&isci_host->pdev->dev);
+
+ if (!controller) {
+ err = -ENOMEM;
+ dev_err(&isci_host->pdev->dev, "%s: failed (%d)\n", __func__, err);
+ goto out;
+ }
+
+ isci_host->core_controller = controller;
+ spin_lock_init(&isci_host->state_lock);
+ spin_lock_init(&isci_host->scic_lock);
+ spin_lock_init(&isci_host->queue_lock);
+
+ isci_host_change_state(isci_host, isci_starting);
+ isci_host->can_queue = ISCI_CAN_QUEUE_VAL;
+
+ status = scic_controller_construct(controller, scu_base(isci_host),
+ smu_base(isci_host));
+
+ if (status != SCI_SUCCESS) {
+ dev_err(&isci_host->pdev->dev,
+ "%s: scic_controller_construct failed - status = %x\n",
+ __func__,
+ status);
+ err = -ENODEV;
+ goto out;
+ }
+
+ isci_host->sas_ha.dev = &isci_host->pdev->dev;
+ isci_host->sas_ha.lldd_ha = isci_host;
+
+ /*----------- SCIC controller Initialization Stuff ------------------
+ * set association host adapter struct in core controller.
+ */
+ sci_object_set_association(isci_host->core_controller,
+ (void *)isci_host
+ );
+
+ /* grab initial values stored in the controller object for OEM and USER
+ * parameters */
+ scic_oem_parameters_get(controller, &scic_oem_params);
+ scic_user_parameters_get(controller, &scic_user_params);
+
+ isci_fw = devm_kzalloc(&isci_host->pdev->dev,
+ sizeof(struct isci_firmware),
+ GFP_KERNEL);
+ if (!isci_fw) {
+ dev_warn(&isci_host->pdev->dev,
+ "allocating firmware struct failed\n");
+ dev_warn(&isci_host->pdev->dev,
+ "Default OEM configuration being used:"
+ " 4 narrow ports, and default SAS Addresses\n");
+ goto set_default_params;
+ }
+
+ status = request_firmware(&fw, ISCI_FW_NAME, &isci_host->pdev->dev);
+ if (status) {
+ dev_warn(&isci_host->pdev->dev,
+ "Loading firmware failed, using default values\n");
+ dev_warn(&isci_host->pdev->dev,
+ "Default OEM configuration being used:"
+ " 4 narrow ports, and default SAS Addresses\n");
+ goto set_default_params;
+ }
+ else {
+ status = isci_verify_firmware(fw, isci_fw);
+ if (status != SCI_SUCCESS) {
+ dev_warn(&isci_host->pdev->dev,
+ "firmware verification failed\n");
+ dev_warn(&isci_host->pdev->dev,
+ "Default OEM configuration being used:"
+ " 4 narrow ports, and default SAS "
+ "Addresses\n");
+ goto set_default_params;
+ }
+
+ /* grab any OEM and USER parameters specified at module load */
+ status = isci_parse_oem_parameters(&scic_oem_params,
+ isci_host->id, isci_fw);
+ if (status != SCI_SUCCESS) {
+ dev_warn(&isci_host->pdev->dev,
+ "parsing firmware oem parameters failed\n");
+ err = -EINVAL;
+ goto out;
+ }
+
+ status = isci_parse_user_parameters(&scic_user_params,
+ isci_host->id, isci_fw);
+ if (status != SCI_SUCCESS) {
+ dev_warn(&isci_host->pdev->dev,
+ "%s: isci_parse_user_parameters"
+ " failed\n", __func__);
+ err = -EINVAL;
+ goto out;
+ }
+ }
+
+ set_default_params:
+
+ status = scic_oem_parameters_set(isci_host->core_controller,
+ &scic_oem_params
+ );
+
+ if (status != SCI_SUCCESS) {
+ dev_warn(&isci_host->pdev->dev,
+ "%s: scic_oem_parameters_set failed\n",
+ __func__);
+ err = -ENODEV;
+ goto out;
+ }
+
+
+ status = scic_user_parameters_set(isci_host->core_controller,
+ &scic_user_params
+ );
+
+ if (status != SCI_SUCCESS) {
+ dev_warn(&isci_host->pdev->dev,
+ "%s: scic_user_parameters_set failed\n",
+ __func__);
+ err = -ENODEV;
+ goto out;
+ }
+
+ status = scic_controller_initialize(isci_host->core_controller);
+ if (status != SCI_SUCCESS) {
+ dev_warn(&isci_host->pdev->dev,
+ "%s: scic_controller_initialize failed -"
+ " status = 0x%x\n",
+ __func__, status);
+ err = -ENODEV;
+ goto out;
+ }
+
+ /* @todo: use both MSI-X interrupts, and don't do indirect
+ * calls to the handlers just register direct calls
+ */
+ if (isci_host->pdev->msix_enabled) {
+ status = scic_controller_get_handler_methods(
+ SCIC_MSIX_INTERRUPT_TYPE,
+ SCI_MSIX_DOUBLE_VECTOR,
+ handlers
+ );
+ } else {
+ status = scic_controller_get_handler_methods(
+ SCIC_LEGACY_LINE_INTERRUPT_TYPE,
+ 0,
+ handlers
+ );
+ }
+
+ if (status != SCI_SUCCESS) {
+ handlers->interrupt_handler = NULL;
+ handlers->completion_handler = NULL;
+ dev_err(&isci_host->pdev->dev,
+ "%s: scic_controller_get_handler_methods failed\n",
+ __func__);
+ }
+
+ tasklet_init(&isci_host->completion_tasklet,
+ isci_host_completion_routine,
+ (unsigned long)isci_host
+ );
+
+ INIT_LIST_HEAD(&(isci_host->mdl_struct_list));
+
+ INIT_LIST_HEAD(&isci_host->requests_to_complete);
+ INIT_LIST_HEAD(&isci_host->requests_to_abort);
+
+ /* populate mdl with dma memory. scu_mdl_allocate_coherent() */
+ err = isci_host_mdl_allocate_coherent(isci_host);
+
+ if (err)
+ goto err_out;
+
+ /*
+ * keep the pool alloc size around, will use it for a bounds checking
+ * when trying to convert virtual addresses to physical addresses
+ */
+ isci_host->dma_pool_alloc_size = sizeof(struct isci_request) +
+ scic_io_request_get_object_size();
+ isci_host->dma_pool = dmam_pool_create(DRV_NAME, &isci_host->pdev->dev,
+ isci_host->dma_pool_alloc_size,
+ SLAB_HWCACHE_ALIGN, 0);
+
+ if (!isci_host->dma_pool) {
+ err = -ENOMEM;
+ goto req_obj_err_out;
+ }
+
+ for (index = 0; index < SCI_MAX_PORTS; index++) {
+ isci_port_init(&isci_host->isci_ports[index],
+ isci_host, index);
+ }
+
+ for (index = 0; index < SCI_MAX_PHYS; index++)
+ isci_phy_init(&isci_host->phys[index], isci_host, index);
+
+ /* Why are we doing this? Is this even necessary? */
+ memcpy(&isci_host->sas_addr[0], &isci_host->phys[0].sas_addr[0],
+ SAS_ADDR_SIZE);
+
+ /* Start the ports */
+ for (index = 0; index < SCI_MAX_PORTS; index++) {
+
+ scic_controller_get_port_handle(controller, index, &scic_port);
+ scic_port_start(scic_port);
+ }
+
+ goto out;
+
+/* SPB_Debug: destroy request object cache */
+ req_obj_err_out:
+/* SPB_Debug: destroy remote object cache */
+ err_out:
+/* SPB_Debug: undo controller init, construct and alloc, remove from parent
+ * controller list. */
+ out:
+ if (fw)
+ release_firmware(fw);
+ return err;
+}
diff --git a/drivers/scsi/isci/host.h b/drivers/scsi/isci/host.h
new file mode 100644
index 0000000..3530076
--- /dev/null
+++ b/drivers/scsi/isci/host.h
@@ -0,0 +1,283 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * 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.
+ * * Neither the name of Intel Corporation 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. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * This file contains the isci_module initialization routines.
+ *
+ * host.h
+ */
+
+
+
+#if !defined(_SCI_HOST_H_)
+#define _SCI_HOST_H_
+
+#include "phy.h"
+/*#include "task.h"*/
+#include "timers.h"
+#include "remote_device.h"
+#include "scic_user_callback.h"
+
+#define DRV_NAME "isci"
+#define SCI_PCI_BAR_COUNT 2
+#define SCI_NUM_MSI_X_INT 2
+#define SCI_SMU_BAR 0
+#define SCI_SMU_BAR_SIZE (16*1024)
+#define SCI_SCU_BAR 1
+#define SCI_SCU_BAR_SIZE (4*1024*1024)
+#define SCI_IO_SPACE_BAR0 2
+#define SCI_IO_SPACE_BAR1 3
+#define SCI_MSIX_NORMAL_VECTOR 0
+#define SCI_MSIX_ERROR_VECTOR 1
+#define SCI_MSIX_SINGLE_VECTOR 1
+#define SCI_MSIX_DOUBLE_VECTOR 2
+#define ISCI_CAN_QUEUE_VAL 250 /* < SCI_MAX_IO_REQUESTS ? */
+#define SCIC_CONTROLLER_STOP_TIMEOUT 5000
+
+struct coherent_memory_info {
+ struct list_head node;
+ dma_addr_t dma_handle;
+ void *vaddr;
+ size_t size;
+ struct sci_physical_memory_descriptor *mde;
+};
+
+struct isci_host {
+ struct scic_sds_controller *core_controller;
+ struct scic_controller_handler_methods scic_irq_handlers[SCI_NUM_MSI_X_INT];
+ union scic_oem_parameters oem_parameters;
+
+ int id; /* unique within a given pci device */
+ struct isci_timer_list timer_list_struct;
+ void *core_ctrl_memory;
+ struct dma_pool *dma_pool;
+ unsigned int dma_pool_alloc_size;
+ struct isci_phy phys[SCI_MAX_PHYS];
+
+ /* isci_ports and sas_ports are implicitly parallel to the
+ * ports maintained by the core
+ */
+ struct isci_port isci_ports[SCI_MAX_PORTS];
+ struct asd_sas_port sas_ports[SCI_MAX_PORTS];
+ struct sas_ha_struct sas_ha;
+
+ int can_queue;
+ spinlock_t queue_lock;
+ spinlock_t state_lock;
+
+ struct pci_dev *pdev;
+ u8 sas_addr[SAS_ADDR_SIZE];
+
+ enum isci_status status;
+ struct Scsi_Host *shost;
+ struct tasklet_struct completion_tasklet;
+ struct list_head mdl_struct_list;
+ struct list_head requests_to_complete;
+ struct list_head requests_to_abort;
+ struct completion stop_complete;
+ struct completion start_complete;
+ spinlock_t scic_lock;
+ struct isci_host *next;
+};
+
+
+/**
+ * struct isci_pci_info - This class represents the pci function containing the
+ * controllers. Depending on PCI SKU, there could be up to 2 controllers in
+ * the PCI function.
+ */
+#define SCI_MAX_MSIX_INT (SCI_NUM_MSI_X_INT*SCI_MAX_CONTROLLERS)
+
+struct isci_pci_info {
+ struct msix_entry msix_entries[SCI_MAX_MSIX_INT];
+ int core_lib_array_index;
+ SCI_LIBRARY_HANDLE_T core_lib_handle;
+ struct isci_host *hosts;
+};
+
+static inline struct isci_pci_info *to_pci_info(struct pci_dev *pdev)
+{
+ return pci_get_drvdata(pdev);
+}
+
+#define for_each_isci_host(isci_host, pdev) \
+ for (isci_host = to_pci_info(pdev)->hosts;\
+ isci_host; isci_host = isci_host->next)
+
+static inline
+enum isci_status isci_host_get_state(
+ struct isci_host *isci_host)
+{
+ return isci_host->status;
+}
+
+
+static inline void isci_host_change_state(
+ struct isci_host *isci_host,
+ enum isci_status status)
+{
+ unsigned long flags;
+
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_host = %p, state = 0x%x",
+ __func__,
+ isci_host,
+ status);
+ spin_lock_irqsave(&isci_host->state_lock, flags);
+ isci_host->status = status;
+ spin_unlock_irqrestore(&isci_host->state_lock, flags);
+
+}
+
+static inline int isci_host_can_queue(
+ struct isci_host *isci_host,
+ int num)
+{
+ int ret = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&isci_host->queue_lock, flags);
+ if ((isci_host->can_queue - num) < 0) {
+ dev_dbg(&isci_host->pdev->dev,
+ "%s: isci_host->can_queue = %d\n",
+ __func__,
+ isci_host->can_queue);
+ ret = -SAS_QUEUE_FULL;
+
+ } else
+ isci_host->can_queue -= num;
+
+ spin_unlock_irqrestore(&isci_host->queue_lock, flags);
+
+ return ret;
+}
+
+static inline void isci_host_can_dequeue(
+ struct isci_host *isci_host,
+ int num)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&isci_host->queue_lock, flags);
+ isci_host->can_queue += num;
+ spin_unlock_irqrestore(&isci_host->queue_lock, flags);
+}
+
+/**
+ * isci_host_from_sas_ha() - This accessor retrieves the isci_host object
+ * reference from the Linux sas_ha_struct reference.
+ * @ha_struct,: This parameter points to the Linux sas_ha_struct object
+ *
+ * A reference to the associated isci_host structure.
+ */
+#define isci_host_from_sas_ha(ha_struct) \
+ ((struct isci_host *)(ha_struct)->lldd_ha)
+
+/**
+ * isci_host_scan_finished() -
+ *
+ * This function is one of the SCSI Host Template functions. The SCSI midlayer
+ * calls this function during a target scan, approx. once every 10 millisecs.
+ */
+int isci_host_scan_finished(
+ struct Scsi_Host *,
+ unsigned long);
+
+
+/**
+ * isci_host_scan_start() -
+ *
+ * This function is one of the SCSI Host Template function, called by the SCSI
+ * mid layer berfore a target scan begins. The core library controller start
+ * routine is called from here.
+ */
+void isci_host_scan_start(
+ struct Scsi_Host *);
+
+/**
+ * isci_host_start_complete() -
+ *
+ * This function is called by the core library, through the ISCI Module, to
+ * indicate controller start status.
+ */
+void isci_host_start_complete(
+ struct isci_host *,
+ enum sci_status);
+
+void isci_host_stop_complete(
+ struct isci_host *isci_host,
+ enum sci_status completion_status);
+
+int isci_host_init(struct isci_host *);
+
+void isci_host_init_controller_names(
+ struct isci_host *isci_host,
+ unsigned int controller_idx);
+
+void isci_host_deinit(
+ struct isci_host *);
+
+void isci_host_port_link_up(
+ struct isci_host *,
+ struct scic_sds_port *,
+ struct scic_sds_phy *);
+int isci_host_dev_found(struct domain_device *);
+
+void isci_host_remote_device_start_complete(
+ struct isci_host *,
+ struct isci_remote_device *,
+ enum sci_status);
+
+#endif /* !defined(_SCI_HOST_H_) */
diff --git a/drivers/scsi/isci/init.c b/drivers/scsi/isci/init.c
new file mode 100644
index 0000000..07b072f
--- /dev/null
+++ b/drivers/scsi/isci/init.c
@@ -0,0 +1,613 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * 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.
+ * * Neither the name of Intel Corporation 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. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <asm/string.h>
+#include "isci.h"
+#include "task.h"
+#include "sci_controller_constants.h"
+#include "scic_remote_device.h"
+#include "sci_environment.h"
+
+static struct scsi_transport_template *isci_transport_template;
+struct kmem_cache *isci_kmem_cache;
+
+static DEFINE_PCI_DEVICE_TABLE(isci_id_table) = {
+ { PCI_VDEVICE(INTEL, 0x1D61),},
+ { PCI_VDEVICE(INTEL, 0x1D63),},
+ { PCI_VDEVICE(INTEL, 0x1D65),},
+ { PCI_VDEVICE(INTEL, 0x1D67),},
+ { PCI_VDEVICE(INTEL, 0x1D69),},
+ { PCI_VDEVICE(INTEL, 0x1D6B),},
+ { PCI_VDEVICE(INTEL, 0x1D60),},
+ { PCI_VDEVICE(INTEL, 0x1D62),},
+ { PCI_VDEVICE(INTEL, 0x1D64),},
+ { PCI_VDEVICE(INTEL, 0x1D66),},
+ { PCI_VDEVICE(INTEL, 0x1D68),},
+ { PCI_VDEVICE(INTEL, 0x1D6A),},
+ {}
+};
+
+static int __devinit isci_pci_probe(
+ struct pci_dev *pdev,
+ const struct pci_device_id *device_id_p);
+
+static void __devexit isci_pci_remove(struct pci_dev *pdev);
+
+MODULE_DEVICE_TABLE(pci, isci_id_table);
+
+static struct pci_driver isci_pci_driver = {
+ .name = DRV_NAME,
+ .id_table = isci_id_table,
+ .probe = isci_pci_probe,
+ .remove = __devexit_p(isci_pci_remove),
+};
+
+/* linux isci specific settings */
+int loglevel = 3;
+module_param(loglevel, int, S_IRUGO | S_IWUSR);
+
+#if defined(CONFIG_PBG_HBA_A0)
+int isci_si_rev = ISCI_SI_REVA0;
+#elif defined(CONFIG_PBG_HBA_A2)
+int isci_si_rev = ISCI_SI_REVA2;
+#else
+int isci_si_rev = ISCI_SI_REVB0;
+#endif
+module_param(isci_si_rev, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(isci_si_rev, "override default si rev (0: A0 1: A2 2: B0)");
+
+static struct scsi_host_template isci_sht = {
+
+ .module = THIS_MODULE,
+ .name = DRV_NAME,
+ .queuecommand = sas_queuecommand,
+ .target_alloc = sas_target_alloc,
+ .slave_configure = sas_slave_configure,
+ .slave_destroy = sas_slave_destroy,
+ .scan_finished = isci_host_scan_finished,
+ .scan_start = isci_host_scan_start,
+ .change_queue_depth = sas_change_queue_depth,
+ .change_queue_type = sas_change_queue_type,
+ .bios_param = sas_bios_param,
+ .can_queue = ISCI_CAN_QUEUE_VAL,
+ .cmd_per_lun = 1,
+ .this_id = -1,
+ .sg_tablesize = SG_ALL,
+ .max_sectors = SCSI_DEFAULT_MAX_SECTORS,
+ .use_clustering = ENABLE_CLUSTERING,
+ .eh_device_reset_handler = sas_eh_device_reset_handler,
+ .eh_bus_reset_handler = isci_bus_reset_handler,
+ .slave_alloc = sas_slave_alloc,
+ .target_destroy = sas_target_destroy,
+ .ioctl = sas_ioctl,
+};
+
+static struct sas_domain_function_template isci_transport_ops = {
+
+ /* The class calls these to notify the LLDD of an event. */
+ .lldd_port_formed = isci_port_formed,
+ .lldd_port_deformed = isci_port_deformed,
+
+ /* The class calls these when a device is found or gone. */
+ .lldd_dev_found = isci_remote_device_found,
+ .lldd_dev_gone = isci_remote_device_gone,
+
+ .lldd_execute_task = isci_task_execute_task,
+ /* Task Management Functions. Must be called from process context. */
+ .lldd_abort_task = isci_task_abort_task,
+ .lldd_abort_task_set = isci_task_abort_task_set,
+ .lldd_clear_aca = isci_task_clear_aca,
+ .lldd_clear_task_set = isci_task_clear_task_set,
+ .lldd_I_T_nexus_reset = isci_task_I_T_nexus_reset,
+ .lldd_lu_reset = isci_task_lu_reset,
+ .lldd_query_task = isci_task_query_task,
+
+ /* Port and Adapter management */
+ .lldd_clear_nexus_port = isci_task_clear_nexus_port,
+ .lldd_clear_nexus_ha = isci_task_clear_nexus_ha,
+
+ /* Phy management */
+ .lldd_control_phy = isci_phy_control,
+};
+
+
+/******************************************************************************
+* P R O T E C T E D M E T H O D S
+******************************************************************************/
+
+
+
+/**
+ * isci_register_sas_ha() - This method initializes various lldd
+ * specific members of the sas_ha struct and calls the libsas
+ * sas_register_ha() function.
+ * @isci_host: This parameter specifies the lldd specific wrapper for the
+ * libsas sas_ha struct.
+ *
+ * This method returns an error code indicating sucess or failure. The user
+ * should check for possible memory allocation error return otherwise, a zero
+ * indicates success.
+ */
+static int isci_register_sas_ha(struct isci_host *isci_host)
+{
+ int i;
+ struct sas_ha_struct *sas_ha = &(isci_host->sas_ha);
+ struct asd_sas_phy **sas_phys;
+ struct asd_sas_port **sas_ports;
+
+ sas_phys = devm_kzalloc(&isci_host->pdev->dev,
+ SCI_MAX_PHYS * sizeof(void *),
+ GFP_KERNEL);
+ if (!sas_phys)
+ return -ENOMEM;
+
+ sas_ports = devm_kzalloc(&isci_host->pdev->dev,
+ SCI_MAX_PORTS * sizeof(void *),
+ GFP_KERNEL);
+ if (!sas_ports)
+ return -ENOMEM;
+
+ /*----------------- Libsas Initialization Stuff----------------------
+ * Set various fields in the sas_ha struct:
+ */
+
+ sas_ha->sas_ha_name = DRV_NAME;
+ sas_ha->lldd_module = THIS_MODULE;
+ sas_ha->sas_addr = &(isci_host->sas_addr[0]);
+
+ /* set the array of phy and port structs. */
+ for (i = 0; i < SCI_MAX_PHYS; i++) {
+ sas_phys[i] = &(isci_host->phys[i].sas_phy);
+ sas_ports[i] = &(isci_host->sas_ports[i]);
+ }
+
+ sas_ha->sas_phy = sas_phys;
+ sas_ha->sas_port = sas_ports;
+ sas_ha->num_phys = SCI_MAX_PHYS;
+
+ sas_ha->lldd_queue_size = ISCI_CAN_QUEUE_VAL;
+ sas_ha->lldd_max_execute_num = 1;
+ sas_ha->strict_wide_ports = 1;
+
+ sas_register_ha(sas_ha);
+
+ return 0;
+}
+
+static void isci_unregister_sas_ha(struct isci_host *isci_host)
+{
+ if (!isci_host)
+ return;
+
+ sas_unregister_ha(&(isci_host->sas_ha));
+
+ sas_remove_host(isci_host->shost);
+ scsi_remove_host(isci_host->shost);
+ scsi_host_put(isci_host->shost);
+}
+
+static int __devinit isci_pci_init(struct pci_dev *pdev)
+{
+ int err, bar_num, bar_mask;
+ void __iomem * const *iomap;
+
+ err = pcim_enable_device(pdev);
+ if (err) {
+ dev_err(&pdev->dev,
+ "failed enable PCI device %s!\n",
+ pci_name(pdev));
+ return err;
+ }
+
+ for (bar_num = 0; bar_num < SCI_PCI_BAR_COUNT; bar_num++)
+ bar_mask |= 1 << (bar_num * 2);
+
+ err = pcim_iomap_regions(pdev, bar_mask, DRV_NAME);
+ if (err)
+ return err;
+
+ iomap = pcim_iomap_table(pdev);
+ if (!iomap)
+ return -ENOMEM;
+
+ pci_set_master(pdev);
+
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
+ if (err) {
+ err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (err)
+ return err;
+ }
+
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
+ if (err) {
+ err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
+static struct isci_host *isci_host_by_id(struct pci_dev *pdev, int id)
+{
+ struct isci_host *h;
+
+ for_each_isci_host(h, pdev)
+ if (h->id == id)
+ return h;
+ return NULL;
+}
+
+static int num_controllers(struct pci_dev *pdev)
+{
+ /* bar size alone can tell us if we are running with a dual controller
+ * part, no need to trust revision ids that might be under broken firmware
+ * control
+ */
+ resource_size_t scu_bar_size = pci_resource_len(pdev, SCI_SCU_BAR*2);
+ resource_size_t smu_bar_size = pci_resource_len(pdev, SCI_SMU_BAR*2);
+
+ if (scu_bar_size >= SCI_SCU_BAR_SIZE*SCI_MAX_CONTROLLERS &&
+ smu_bar_size >= SCI_SMU_BAR_SIZE*SCI_MAX_CONTROLLERS)
+ return SCI_MAX_CONTROLLERS;
+ else
+ return 1;
+}
+
+static int isci_setup_interrupts(struct pci_dev *pdev)
+{
+ int err, i, num_msix;
+ struct isci_pci_info *pci_info = to_pci_info(pdev);
+
+ /*
+ * Determine the number of vectors associated with this
+ * PCI function.
+ */
+ num_msix = num_controllers(pdev) * SCI_NUM_MSI_X_INT;
+
+ for (i = 0; i < num_msix; i++)
+ pci_info->msix_entries[i].entry = i;
+
+ err = pci_enable_msix(pdev, pci_info->msix_entries, num_msix);
+ if (err)
+ goto intx;
+
+ for (i = 0; i < num_msix; i++) {
+ int id = i / SCI_NUM_MSI_X_INT;
+ struct msix_entry *msix = &pci_info->msix_entries[i];
+ struct isci_host *isci_host = isci_host_by_id(pdev, id);
+
+ BUG_ON(!isci_host);
+
+ /* @todo: need to handle error case. */
+ err = devm_request_irq(&pdev->dev, msix->vector, isci_isr, 0,
+ DRV_NAME"-msix", isci_host);
+ if (!err)
+ continue;
+
+ dev_info(&pdev->dev, "msix setup failed falling back to intx\n");
+ while (i--) {
+ id = i / SCI_NUM_MSI_X_INT;
+ isci_host = isci_host_by_id(pdev, id);
+ msix = &pci_info->msix_entries[i];
+ devm_free_irq(&pdev->dev, msix->vector, isci_host);
+ }
+ pci_disable_msix(pdev);
+ goto intx;
+ }
+
+ return 0;
+
+ intx:
+ err = devm_request_irq(&pdev->dev, pdev->irq, isci_legacy_isr,
+ IRQF_SHARED, DRV_NAME"-intx", pdev);
+
+ return err;
+}
+
+/**
+ * isci_parse_oem_parameters() - This method will take OEM parameters
+ * from the module init parameters and copy them to oem_params. This will
+ * only copy values that are not set to the module parameter default values
+ * @oem_parameters: This parameter specifies the controller default OEM
+ * parameters. It is expected that this has been initialized to the default
+ * parameters for the controller
+ *
+ *
+ */
+enum sci_status isci_parse_oem_parameters(union scic_oem_parameters *oem_params,
+ int scu_index,
+ struct isci_firmware *fw)
+{
+ int i;
+
+ /* check for valid inputs */
+ if (!(scu_index >= 0
+ && scu_index < SCI_MAX_CONTROLLERS
+ && oem_params != NULL)) {
+ return SCI_FAILURE;
+ }
+
+ for (i = 0; i < SCI_MAX_PHYS; i++) {
+ int array_idx = i + (SCI_MAX_PHYS * scu_index);
+ u64 sas_addr = fw->sas_addrs[array_idx];
+
+ if (sas_addr != 0) {
+ oem_params->sds1.phys[i].sas_address.low =
+ (u32)(sas_addr & 0xffffffff);
+ oem_params->sds1.phys[i].sas_address.high =
+ (u32)((sas_addr >> 32) & 0xffffffff);
+ }
+ }
+
+ for (i = 0; i < SCI_MAX_PORTS; i++) {
+ int array_idx = i + (SCI_MAX_PORTS * scu_index);
+ u32 pmask = fw->phy_masks[array_idx];
+
+ oem_params->sds1.ports[i].phy_mask = pmask;
+ }
+
+ return SCI_SUCCESS;
+}
+
+/**
+ * isci_parse_user_parameters() - This method will take user parameters
+ * from the module init parameters and copy them to user_params. This will
+ * only copy values that are not set to the module parameter default values
+ * @user_parameters: This parameter specifies the controller default user
+ * parameters. It is expected that this has been initialized to the default
+ * parameters for the controller
+ *
+ *
+ */
+enum sci_status isci_parse_user_parameters(
+ union scic_user_parameters *user_params,
+ int scu_index,
+ struct isci_firmware *fw)
+{
+ int i;
+
+ if (!(scu_index >= 0
+ && scu_index < SCI_MAX_CONTROLLERS
+ && user_params != NULL)) {
+ return SCI_FAILURE;
+ }
+
+ for (i = 0; i < SCI_MAX_PORTS; i++) {
+ int array_idx = i + (SCI_MAX_PORTS * scu_index);
+ u32 gen = fw->phy_gens[array_idx];
+
+ user_params->sds1.phys[i].max_speed_generation = gen;
+
+ }
+
+ return SCI_SUCCESS;
+}
+
+static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id)
+{
+ struct isci_host *isci_host;
+ struct Scsi_Host *shost;
+ int err;
+
+ isci_host = devm_kzalloc(&pdev->dev, sizeof(*isci_host), GFP_KERNEL);
+ if (!isci_host)
+ return NULL;
+
+ isci_host->pdev = pdev;
+ isci_host->id = id;
+
+ shost = scsi_host_alloc(&isci_sht, sizeof(void *));
+ if (!shost)
+ return NULL;
+ isci_host->shost = shost;
+
+ err = isci_host_init(isci_host);
+ if (err)
+ goto err_shost;
+
+ SHOST_TO_SAS_HA(shost) = &isci_host->sas_ha;
+ isci_host->sas_ha.core.shost = shost;
+ shost->transportt = isci_transport_template;
+
+ shost->max_id = ~0;
+ shost->max_lun = ~0;
+ shost->max_cmd_len = MAX_COMMAND_SIZE;
+
+ err = scsi_add_host(shost, &pdev->dev);
+ if (err)
+ goto err_shost;
+
+ err = isci_register_sas_ha(isci_host);
+ if (err)
+ goto err_shost_remove;
+
+ return isci_host;
+
+ err_shost_remove:
+ scsi_remove_host(shost);
+ err_shost:
+ scsi_host_put(shost);
+
+ return NULL;
+}
+
+static void check_si_rev(struct pci_dev *pdev)
+{
+ if (num_controllers(pdev) > 1)
+ isci_si_rev = ISCI_SI_REVB0;
+ else {
+ switch (pdev->revision) {
+ case 0:
+ case 1:
+ /* if the id is ambiguous don't update isci_si_rev */
+ break;
+ case 3:
+ isci_si_rev = ISCI_SI_REVA2;
+ break;
+ default:
+ case 4:
+ isci_si_rev = ISCI_SI_REVB0;
+ break;
+ }
+ }
+
+ dev_info(&pdev->dev, "driver configured for %s silicon (rev: %d)\n",
+ isci_si_rev == ISCI_SI_REVA0 ? "A0" :
+ isci_si_rev == ISCI_SI_REVA2 ? "A2" : "B0", pdev->revision);
+
+}
+
+static int __devinit isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
+{
+ struct isci_pci_info *pci_info;
+ int err, i;
+ struct isci_host *isci_host;
+
+ check_si_rev(pdev);
+
+ pci_info = devm_kzalloc(&pdev->dev, sizeof(*pci_info), GFP_KERNEL);
+ if (!pci_info)
+ return -ENOMEM;
+ pci_set_drvdata(pdev, pci_info);
+
+ err = isci_pci_init(pdev);
+ if (err)
+ return err;
+
+ for (i = 0; i < num_controllers(pdev); i++) {
+ struct isci_host *h = isci_host_alloc(pdev, i);
+
+ if (!h) {
+ err = -ENOMEM;
+ goto err_host_alloc;
+ }
+
+ h->next = pci_info->hosts;
+ pci_info->hosts = h;
+ }
+
+ err = isci_setup_interrupts(pdev);
+ if (err)
+ goto err_host_alloc;
+
+ for_each_isci_host(isci_host, pdev)
+ scsi_scan_host(isci_host->shost);
+
+ return 0;
+
+ err_host_alloc:
+ for_each_isci_host(isci_host, pdev)
+ isci_unregister_sas_ha(isci_host);
+ return err;
+}
+
+static void __devexit isci_pci_remove(struct pci_dev *pdev)
+{
+ struct isci_host *isci_host;
+
+ for_each_isci_host(isci_host, pdev) {
+ isci_unregister_sas_ha(isci_host);
+ isci_host_deinit(isci_host);
+ scic_controller_disable_interrupts(isci_host->core_controller);
+ }
+}
+
+static __init int isci_init(void)
+{
+ int err = -ENOMEM;
+
+ pr_info("%s: Intel(R) C600 SAS Controller Driver\n", DRV_NAME);
+
+ isci_kmem_cache = kmem_cache_create(DRV_NAME,
+ sizeof(struct isci_remote_device) +
+ scic_remote_device_get_object_size(),
+ 0, 0, NULL);
+ if (!isci_kmem_cache)
+ return err;
+
+ isci_transport_template = sas_domain_attach_transport(&isci_transport_ops);
+ if (!isci_transport_template)
+ goto err_kmem;
+
+ err = pci_register_driver(&isci_pci_driver);
+ if (err)
+ goto err_sas;
+
+ return 0;
+
+ err_sas:
+ sas_release_transport(isci_transport_template);
+ err_kmem:
+ kmem_cache_destroy(isci_kmem_cache);
+
+ return err;
+}
+
+static __exit void isci_exit(void)
+{
+ pci_unregister_driver(&isci_pci_driver);
+ sas_release_transport(isci_transport_template);
+ kmem_cache_destroy(isci_kmem_cache);
+}
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_FIRMWARE(ISCI_FW_NAME);
+module_init(isci_init);
+module_exit(isci_exit);
diff --git a/drivers/scsi/isci/isci.h b/drivers/scsi/isci/isci.h
new file mode 100644
index 0000000..7d984f4
--- /dev/null
+++ b/drivers/scsi/isci/isci.h
@@ -0,0 +1,138 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * 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.
+ * * Neither the name of Intel Corporation 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. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * This file contains the isci_module object definition.
+ *
+ * isci.h
+ */
+
+#if !defined(_SCI_MODULE_H_)
+#define _SCI_MODULE_H_
+
+/**
+ * This file contains the SCI low level driver interface to the SCI and Libsas
+ * Libraries.
+ *
+ * isci.h
+ */
+
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/firmware.h>
+#include <linux/bug.h>
+#include <scsi/libsas.h>
+#include <scsi/scsi.h>
+
+#include "sci_types.h"
+#include "sci_base_controller.h"
+#include "scic_controller.h"
+#include "host.h"
+#include "timers.h"
+#include "sci_status.h"
+
+extern int loglevel;
+extern struct kmem_cache *isci_kmem_cache;
+
+#define ISCI_FW_NAME "isci/isci_firmware.bin"
+
+#define ISCI_FIRMWARE_MIN_SIZE 149
+
+#define ISCI_FW_IDSIZE 12
+#define ISCI_FW_VER_OFS ISCI_FW_IDSIZE
+#define ISCI_FW_SUBVER_OFS ISCI_FW_VER_OFS + 1
+#define ISCI_FW_DATA_OFS ISCI_FW_SUBVER_OFS + 1
+
+#define ISCI_FW_HDR_PHYMASK 0x1
+#define ISCI_FW_HDR_PHYGEN 0x2
+#define ISCI_FW_HDR_SASADDR 0x3
+#define ISCI_FW_HDR_EOF 0xff
+
+struct isci_firmware {
+ const u8 *id;
+ u8 version;
+ u8 subversion;
+ const u32 *phy_masks;
+ u8 phy_masks_size;
+ const u32 *phy_gens;
+ u8 phy_gens_size;
+ const u64 *sas_addrs;
+ u8 sas_addrs_size;
+};
+
+irqreturn_t isci_isr(int vec, void *data);
+irqreturn_t isci_legacy_isr(int vec, void *data);
+
+enum sci_status isci_parse_oem_parameters(
+ union scic_oem_parameters *oem_params,
+ int scu_index,
+ struct isci_firmware *fw);
+
+enum sci_status isci_parse_user_parameters(
+ union scic_user_parameters *user_params,
+ int scu_index,
+ struct isci_firmware *fw);
+
+#ifdef ISCI_SLAVE_ALLOC
+extern int ISCI_SLAVE_ALLOC(struct scsi_device *scsi_dev);
+#endif /* ISCI_SLAVE_ALLOC */
+
+#ifdef ISCI_SLAVE_DESTROY
+extern void ISCI_SLAVE_DESTROY(struct scsi_device *scsi_dev);
+#endif /* ISCI_SLAVE_DESTROY */
+#endif /* !defined(_SCI_MODULE_H_) */
--
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