* @data: This parameter specifies the ISCI host object
*
*/
- -static void isci_host_completion_routine(unsigned long data)
+ +void isci_host_completion_routine(unsigned long data)
{
struct isci_host *ihost = (struct isci_host *)data;
-- - struct list_head completed_request_list;
-- - struct list_head errored_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;
u16 active;
-- - INIT_LIST_HEAD(&completed_request_list);
-- - INIT_LIST_HEAD(&errored_request_list);
-- -
spin_lock_irq(&ihost->scic_lock);
-- -
sci_controller_completion_handler(ihost);
-- -
-- - /* Take the lists of completed I/Os from the host. */
-- -
-- - list_splice_init(&ihost->requests_to_complete,
-- - &completed_request_list);
-- -
-- - /* Take the list of errored I/Os from the host. */
-- - list_splice_init(&ihost->requests_to_errorback,
-- - &errored_request_list);
-- -
spin_unlock_irq(&ihost->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(&ihost->pdev->dev,
-- - "%s: Normal - request/task = %p/%p\n",
-- - __func__,
-- - request,
-- - task);
-- -
-- - /* Return the task to libsas */
-- - if (task != NULL) {
-- -
-- - task->lldd_task = NULL;
-- - if (!(task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
-- -
-- - /* If the task is already in the abort path,
-- - * the task_done callback cannot be called.
-- - */
-- - task->task_done(task);
-- - }
-- - }
-- -
-- - spin_lock_irq(&ihost->scic_lock);
-- - isci_free_tag(ihost, request->io_tag);
-- - spin_unlock_irq(&ihost->scic_lock);
-- - }
-- - list_for_each_entry_safe(request, next_request, &errored_request_list,
-- - completed_node) {
-- -
-- - task = isci_request_access_task(request);
-- -
-- - /* Use sas_task_abort */
-- - dev_warn(&ihost->pdev->dev,
-- - "%s: Error - request/task = %p/%p\n",
-- - __func__,
-- - request,
-- - task);
-- -
-- - if (task != NULL) {
-- -
-- - /* Put the task into the abort path if it's not there
-- - * already.
-- - */
-- - if (!(task->task_state_flags & SAS_TASK_STATE_ABORTED))
-- - sas_task_abort(task);
-- -
-- - } else {
-- - /* This is a case where the request has completed with a
-- - * status such that it needed further target servicing,
-- - * but the sas_task reference has already been removed
-- - * from the request. Since it was errored, it was not
-- - * being aborted, so there is nothing to do except free
-- - * it.
-- - */
-- -
-- - spin_lock_irq(&ihost->scic_lock);
-- - /* Remove the request from the remote device's list
-- - * of pending requests.
-- - */
-- - list_del_init(&request->dev_node);
-- - isci_free_tag(ihost, request->io_tag);
-- - spin_unlock_irq(&ihost->scic_lock);
-- - }
-- - }
-- -
/* the coalesence timeout doubles at each encoding step, so
* update it based on the ilog2 value of the outstanding requests
*/
if (!ihost->task_context_table)
return -ENOMEM;
- - ihost->task_context_dma = dma;
- - writel(lower_32_bits(dma), &ihost->smu_registers->host_task_table_lower);
- - writel(upper_32_bits(dma), &ihost->smu_registers->host_task_table_upper);
+ + size = SCI_UFI_TOTAL_SIZE;
+ + ihost->ufi_buf = dmam_alloc_coherent(dev, size, &ihost->ufi_dma, GFP_KERNEL);
+ + if (!ihost->ufi_buf)
+ + return -ENOMEM;
+ +
+ + for (i = 0; i < SCI_MAX_IO_REQUESTS; i++) {
+ + struct isci_request *ireq;
+ + dma_addr_t dma;
+ +
+ + ireq = dmam_alloc_coherent(dev, sizeof(*ireq), &dma, GFP_KERNEL);
+ + if (!ireq)
+ + return -ENOMEM;
+ +
+ + ireq->tc = &ihost->task_context_table[i];
+ + ireq->owning_controller = ihost;
- spin_lock_init(&ireq->state_lock);
+ + ireq->request_daddr = dma;
+ + ireq->isci_host = ihost;
+ + ihost->reqs[i] = ireq;
+ + }
+ +
+ + return 0;
+ +}
+ +
+ +static int sci_controller_mem_init(struct isci_host *ihost)
+ +{
+ + int err = sci_controller_dma_alloc(ihost);
- - err = sci_unsolicited_frame_control_construct(ihost);
if (err)
return err;
return 0;
}
+ +/**
+ + * isci_host_init - (re-)initialize hardware and internal (private) state
+ + * @ihost: host to init
+ + *
+ + * Any public facing objects (like asd_sas_port, and asd_sas_phys), or
+ + * one-time initialization objects like locks and waitqueues, are
+ + * not touched (they are initialized in isci_host_alloc)
+ + */
int isci_host_init(struct isci_host *ihost)
{
- - int err = 0, i;
+ + int i, err;
enum sci_status status;
- - struct sci_user_parameters sci_user_params;
- - struct isci_pci_info *pci_info = to_pci_info(ihost->pdev);
- -
- - spin_lock_init(&ihost->state_lock);
- - spin_lock_init(&ihost->scic_lock);
- - init_waitqueue_head(&ihost->eventq);
- -
- - isci_host_change_state(ihost, isci_starting);
- -
- - status = sci_controller_construct(ihost, scu_base(ihost),
- - smu_base(ihost));
+ ++ spin_lock_irq(&ihost->scic_lock);
+ + status = sci_controller_construct(ihost, scu_base(ihost), smu_base(ihost));
+ ++ spin_unlock_irq(&ihost->scic_lock);
if (status != SCI_SUCCESS) {
dev_err(&ihost->pdev->dev,
"%s: sci_controller_construct failed - status = %x\n",
enum sci_status status;
if (ihost->sm.current_state_id != SCIC_READY) {
- - dev_warn(&ihost->pdev->dev,
- - "invalid state to terminate request\n");
+ + dev_warn(&ihost->pdev->dev, "%s invalid state: %d\n",
+ + __func__, ihost->sm.current_state_id);
return SCI_FAILURE_INVALID_STATE;
}
-- -
status = sci_io_request_terminate(ireq);
-- - if (status != SCI_SUCCESS)
-- - return status;
-- - /*
-- - * Utilize the original post context command and or in the POST_TC_ABORT
-- - * request sub-type.
-- - */
-- - sci_controller_post_request(ihost,
-- - ireq->post_context | SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT);
-- - return SCI_SUCCESS;
++ + dev_dbg(&ihost->pdev->dev, "%s: status=%d; ireq=%p; flags=%lx\n",
++ + __func__, status, ireq, ireq->flags);
++ +
++ + if ((status == SCI_SUCCESS) &&
++ + !test_bit(IREQ_PENDING_ABORT, &ireq->flags) &&
++ + !test_and_set_bit(IREQ_TC_ABORT_POSTED, &ireq->flags)) {
++ + /* Utilize the original post context command and or in the
++ + * POST_TC_ABORT request sub-type.
++ + */
++ + sci_controller_post_request(
++ + ihost, ireq->post_context |
++ + SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT);
++ + }
++ + return status;
}
/**
struct asd_sas_port sas_ports[SCI_MAX_PORTS];
struct sas_ha_struct sas_ha;
- - spinlock_t state_lock;
struct pci_dev *pdev;
- - enum isci_status status;
#define IHOST_START_PENDING 0
#define IHOST_STOP_PENDING 1
+ ++ #define IHOST_IRQ_ENABLED 2
unsigned long flags;
wait_queue_head_t eventq;
- -- struct Scsi_Host *shost;
struct tasklet_struct completion_tasklet;
-- - struct list_head requests_to_complete;
-- - struct list_head requests_to_errorback;
spinlock_t scic_lock;
struct isci_request *reqs[SCI_MAX_IO_REQUESTS];
struct isci_remote_device devices[SCI_MAX_REMOTE_DEVICES];
u16 isci_alloc_tag(struct isci_host *ihost);
enum sci_status isci_free_tag(struct isci_host *ihost, u16 io_tag);
void isci_tci_free(struct isci_host *ihost, u16 tci);
++ +void ireq_done(struct isci_host *ihost, struct isci_request *ireq, struct sas_task *task);
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 isci_port *,
- - struct isci_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);
- -
- -void sci_controller_disable_interrupts(
- - struct isci_host *ihost);
+ +void isci_host_completion_routine(unsigned long data);
+ +void isci_host_deinit(struct isci_host *);
+ +void sci_controller_disable_interrupts(struct isci_host *ihost);
+ +bool sci_controller_has_remote_devices_stopping(struct isci_host *ihost);
+ ++void sci_controller_transition_to_ready(struct isci_host *ihost, enum sci_status status);
enum sci_status sci_controller_start_io(
struct isci_host *ihost,
return err;
}
+ +static void isci_user_parameters_get(struct sci_user_parameters *u)
+ +{
+ + int i;
+ +
+ + for (i = 0; i < SCI_MAX_PHYS; i++) {
+ + struct sci_phy_user_params *u_phy = &u->phys[i];
+ +
+ + u_phy->max_speed_generation = phy_gen;
+ +
+ + /* we are not exporting these for now */
+ + u_phy->align_insertion_frequency = 0x7f;
+ + u_phy->in_connection_align_insertion_frequency = 0xff;
+ + u_phy->notify_enable_spin_up_insertion_frequency = 0x33;
+ + }
+ +
+ + u->stp_inactivity_timeout = stp_inactive_to;
+ + u->ssp_inactivity_timeout = ssp_inactive_to;
+ + u->stp_max_occupancy_timeout = stp_max_occ_to;
+ + u->ssp_max_occupancy_timeout = ssp_max_occ_to;
+ + u->no_outbound_task_timeout = no_outbound_task_to;
+ + u->max_concurr_spinup = max_concurr_spinup;
+ +}
+ +
+ +static enum sci_status sci_user_parameters_set(struct isci_host *ihost,
+ + struct sci_user_parameters *sci_parms)
+ +{
+ + u16 index;
+ +
+ + /*
+ + * Validate the user parameters. If they are not legal, then
+ + * return a failure.
+ + */
+ + for (index = 0; index < SCI_MAX_PHYS; index++) {
+ + struct sci_phy_user_params *u;
+ +
+ + u = &sci_parms->phys[index];
+ +
+ + if (!((u->max_speed_generation <= SCIC_SDS_PARM_MAX_SPEED) &&
+ + (u->max_speed_generation > SCIC_SDS_PARM_NO_SPEED)))
+ + return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+ +
+ + if (u->in_connection_align_insertion_frequency < 3)
+ + return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+ +
+ + if ((u->in_connection_align_insertion_frequency < 3) ||
+ + (u->align_insertion_frequency == 0) ||
+ + (u->notify_enable_spin_up_insertion_frequency == 0))
+ + return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+ + }
+ +
+ + if ((sci_parms->stp_inactivity_timeout == 0) ||
+ + (sci_parms->ssp_inactivity_timeout == 0) ||
+ + (sci_parms->stp_max_occupancy_timeout == 0) ||
+ + (sci_parms->ssp_max_occupancy_timeout == 0) ||
+ + (sci_parms->no_outbound_task_timeout == 0))
+ + return SCI_FAILURE_INVALID_PARAMETER_VALUE;
+ +
+ + memcpy(&ihost->user_parameters, sci_parms, sizeof(*sci_parms));
+ +
+ + return SCI_SUCCESS;
+ +}
+ +
+ +static void sci_oem_defaults(struct isci_host *ihost)
+ +{
+ + /* these defaults are overridden by the platform / firmware */
+ + struct sci_user_parameters *user = &ihost->user_parameters;
+ + struct sci_oem_params *oem = &ihost->oem_parameters;
+ + int i;
+ +
+ + /* Default to APC mode. */
+ + oem->controller.mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE;
+ +
+ + /* Default to APC mode. */
+ + oem->controller.max_concurr_spin_up = 1;
+ +
+ + /* Default to no SSC operation. */
+ + oem->controller.do_enable_ssc = false;
+ +
+ + /* Default to short cables on all phys. */
+ + oem->controller.cable_selection_mask = 0;
+ +
+ + /* Initialize all of the port parameter information to narrow ports. */
+ + for (i = 0; i < SCI_MAX_PORTS; i++)
+ + oem->ports[i].phy_mask = 0;
+ +
+ + /* Initialize all of the phy parameter information. */
+ + for (i = 0; i < SCI_MAX_PHYS; i++) {
+ + /* Default to 3G (i.e. Gen 2). */
+ + user->phys[i].max_speed_generation = SCIC_SDS_PARM_GEN2_SPEED;
+ +
+ + /* the frequencies cannot be 0 */
+ + user->phys[i].align_insertion_frequency = 0x7f;
+ + user->phys[i].in_connection_align_insertion_frequency = 0xff;
+ + user->phys[i].notify_enable_spin_up_insertion_frequency = 0x33;
+ +
+ + /* Previous Vitesse based expanders had a arbitration issue that
+ + * is worked around by having the upper 32-bits of SAS address
+ + * with a value greater then the Vitesse company identifier.
+ + * Hence, usage of 0x5FCFFFFF.
+ + */
+ + oem->phys[i].sas_address.low = 0x1 + ihost->id;
+ + oem->phys[i].sas_address.high = 0x5FCFFFFF;
+ + }
+ +
+ + user->stp_inactivity_timeout = 5;
+ + user->ssp_inactivity_timeout = 5;
+ + user->stp_max_occupancy_timeout = 5;
+ + user->ssp_max_occupancy_timeout = 20;
+ + user->no_outbound_task_timeout = 2;
+ +}
+ +
static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id)
{
- - struct isci_host *isci_host;
+ + struct isci_orom *orom = to_pci_info(pdev)->orom;
+ + struct sci_user_parameters sci_user_params;
+ + u8 oem_version = ISCI_ROM_VER_1_0;
+ + struct isci_host *ihost;
struct Scsi_Host *shost;
- - int err;
+ + int err, i;
- - isci_host = devm_kzalloc(&pdev->dev, sizeof(*isci_host), GFP_KERNEL);
- - if (!isci_host)
+ + ihost = devm_kzalloc(&pdev->dev, sizeof(*ihost), GFP_KERNEL);
+ + if (!ihost)
return NULL;
- - isci_host->pdev = pdev;
- - isci_host->id = id;
+ + ihost->pdev = pdev;
+ + ihost->id = id;
+ + spin_lock_init(&ihost->scic_lock);
+ + init_waitqueue_head(&ihost->eventq);
+ + ihost->sas_ha.dev = &ihost->pdev->dev;
+ + ihost->sas_ha.lldd_ha = ihost;
+ + tasklet_init(&ihost->completion_tasklet,
+ + isci_host_completion_routine, (unsigned long)ihost);
+ +
+ + /* validate module parameters */
+ + /* TODO: kill struct sci_user_parameters and reference directly */
+ + sci_oem_defaults(ihost);
+ + isci_user_parameters_get(&sci_user_params);
+ + if (sci_user_parameters_set(ihost, &sci_user_params)) {
+ + dev_warn(&pdev->dev,
+ + "%s: sci_user_parameters_set failed\n", __func__);
+ + return NULL;
+ + }
+ +
+ + /* sanity check platform (or 'firmware') oem parameters */
+ + if (orom) {
+ + if (id < 0 || id >= SCI_MAX_CONTROLLERS || id > orom->hdr.num_elements) {
+ + dev_warn(&pdev->dev, "parsing firmware oem parameters failed\n");
+ + return NULL;
+ + }
+ + ihost->oem_parameters = orom->ctrl[id];
+ + oem_version = orom->hdr.version;
+ + }
+ +
+ + /* validate oem parameters (platform, firmware, or built-in defaults) */
+ + if (sci_oem_parameters_validate(&ihost->oem_parameters, oem_version)) {
+ + dev_warn(&pdev->dev, "oem parameter validation failed\n");
+ + return NULL;
+ + }
+ +
- INIT_LIST_HEAD(&ihost->requests_to_complete);
- INIT_LIST_HEAD(&ihost->requests_to_errorback);
+ + for (i = 0; i < SCI_MAX_PORTS; i++) {
+ + struct isci_port *iport = &ihost->ports[i];
+ +
+ + INIT_LIST_HEAD(&iport->remote_dev_list);
+ + iport->isci_host = ihost;
+ + }
+ +
+ + for (i = 0; i < SCI_MAX_PHYS; i++)
+ + isci_phy_init(&ihost->phys[i], ihost, i);
+ +
+ + for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) {
+ + struct isci_remote_device *idev = &ihost->devices[i];
+ +
- INIT_LIST_HEAD(&idev->reqs_in_process);
+ + INIT_LIST_HEAD(&idev->node);
+ + }
shost = scsi_host_alloc(&isci_sht, sizeof(void *));
if (!shost)
return NULL;
- - isci_host->shost = shost;
- ihost->shost = shost;
dev_info(&pdev->dev, "%sSCU controller %d: phy 3-0 cables: "
"{%s, %s, %s, %s}\n",
/* Build the common part of the request */
sci_general_request_construct(ihost, idev, ireq);
- - if (dev->dev_type == SAS_END_DEV ||
- - dev->dev_type == SATA_DEV || (dev->tproto & SAS_PROTOCOL_STP)) {
+ + if (dev->dev_type == SAS_END_DEV || dev_is_sata(dev)) {
set_bit(IREQ_TMF, &ireq->flags);
memset(ireq->tc, 0, sizeof(struct scu_task_context));
++ +
++ + /* Set the protocol indicator. */
++ + if (dev_is_sata(dev))
++ + ireq->protocol = SAS_PROTOCOL_STP;
++ + else
++ + ireq->protocol = SAS_PROTOCOL_SSP;
} else
status = SCI_FAILURE_UNSUPPORTED_PROTOCOL;
projects / karo-tx-linux.git / commitdiff