void isci_controller_domain_discovery_complete(
struct ISCI_CONTROLLER *isci_controller, struct ISCI_DOMAIN *isci_domain)
{
if (isci_controller->sim == NULL)
{
/* Controller has not been attached to CAM 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 attach the controller
* to CAM.
*/
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_attach_to_cam(isci_controller);
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);
}
}
}
}
SCI_STATUS isci_controller_initialize(struct ISCI_CONTROLLER *controller)
{
SCIC_USER_PARAMETERS_T scic_user_parameters;
SCI_CONTROLLER_HANDLE_T scic_controller_handle;
unsigned long tunable;
int i;
scic_controller_handle =
scif_controller_get_scic_handle(controller->scif_controller_handle);
if (controller->isci->oem_parameters_found == TRUE)
{
scic_oem_parameters_set(
scic_controller_handle,
&controller->oem_parameters,
(uint8_t)(controller->oem_parameters_version));
}
scic_user_parameters_get(scic_controller_handle, &scic_user_parameters);
if (TUNABLE_ULONG_FETCH("hw.isci.no_outbound_task_timeout", &tunable))
scic_user_parameters.sds1.no_outbound_task_timeout =
(uint8_t)tunable;
if (TUNABLE_ULONG_FETCH("hw.isci.ssp_max_occupancy_timeout", &tunable))
scic_user_parameters.sds1.ssp_max_occupancy_timeout =
(uint16_t)tunable;
if (TUNABLE_ULONG_FETCH("hw.isci.stp_max_occupancy_timeout", &tunable))
scic_user_parameters.sds1.stp_max_occupancy_timeout =
(uint16_t)tunable;
if (TUNABLE_ULONG_FETCH("hw.isci.ssp_inactivity_timeout", &tunable))
scic_user_parameters.sds1.ssp_inactivity_timeout =
(uint16_t)tunable;
if (TUNABLE_ULONG_FETCH("hw.isci.stp_inactivity_timeout", &tunable))
scic_user_parameters.sds1.stp_inactivity_timeout =
(uint16_t)tunable;
if (TUNABLE_ULONG_FETCH("hw.isci.max_speed_generation", &tunable))
for (i = 0; i < SCI_MAX_PHYS; i++)
scic_user_parameters.sds1.phys[i].max_speed_generation =
(uint8_t)tunable;
scic_user_parameters_set(scic_controller_handle, &scic_user_parameters);
/* Scheduler bug in SCU requires SCIL to reserve some task contexts as a
* a workaround - one per domain.
*/
controller->queue_depth = SCI_MAX_IO_REQUESTS - SCI_MAX_DOMAINS;
if (TUNABLE_INT_FETCH("hw.isci.controller_queue_depth",
&controller->queue_depth)) {
controller->queue_depth = max(1, min(controller->queue_depth,
SCI_MAX_IO_REQUESTS - SCI_MAX_DOMAINS));
}
/* Reserve one request so that we can ensure we have one available TC
* to do internal device resets.
*/
controller->sim_queue_depth = controller->queue_depth - 1;
/* Although we save one TC to do internal device resets, it is possible
* we could end up using several TCs for simultaneous device resets
* while at the same time having CAM fill our controller queue. To
* simulate this condition, and how our driver handles it, we can set
* this io_shortage parameter, which will tell CAM that we have a
* large queue depth than we really do.
*/
uint32_t io_shortage = 0;
TUNABLE_INT_FETCH("hw.isci.io_shortage", &io_shortage);
controller->sim_queue_depth += io_shortage;
/* Attach to CAM using xpt_bus_register now, then immediately freeze
* the simq. It will get released later when initial domain discovery
* is complete.
*/
controller->has_been_scanned = FALSE;
mtx_lock(&controller->lock);
isci_controller_attach_to_cam(controller);
xpt_freeze_simq(controller->sim, 1);
mtx_unlock(&controller->lock);
return (scif_controller_initialize(controller->scif_controller_handle));
}
