/* Init the state machine and call the state entry function (if any) */ void sci_init_sm(struct sci_base_state_machine *sm, conststruct sci_base_state *state_table, u32 initial_state)
{
sci_state_transition_t handler;
handler = sm->state_table[initial_state].enter_state; if (handler)
handler(sm);
}
/* Call the state exit fn, update the current state, call the state entry fn */ void sci_change_state(struct sci_base_state_machine *sm, u32 next_state)
{
sci_state_transition_t handler;
handler = sm->state_table[sm->current_state_id].exit_state; if (handler)
handler(sm);
if (NORMALIZE_GET_POINTER_CYCLE_BIT(get_value) ==
COMPLETION_QUEUE_CYCLE_BIT(ihost->completion_queue[get_index])) returntrue;
returnfalse;
}
staticbool sci_controller_isr(struct isci_host *ihost)
{ if (sci_controller_completion_queue_has_entries(ihost)) returntrue;
/* we have a spurious interrupt it could be that we have already *emptiedthecompletionqueuefromapreviousinterrupt *FIXME:really!?
*/
writel(SMU_ISR_COMPLETION, &ihost->smu_registers->interrupt_status);
/* There is a race in the hardware that could cause us not to be *notifiedofaninterruptcompletionifwedonottakethis *step.Wewillmaskthenunmasktheinterruptssoifthereis *anotherinterruptpendingtheclearingoftheinterrupt *sourcewegetthenextinterruptmessage.
*/
spin_lock(&ihost->scic_lock); if (test_bit(IHOST_IRQ_ENABLED, &ihost->flags)) {
writel(0xFF000000, &ihost->smu_registers->interrupt_mask);
writel(0, &ihost->smu_registers->interrupt_mask);
}
spin_unlock(&ihost->scic_lock);
if (interrupt_status != 0) { /* *Thereisanerrorinterruptpendingsoletitthroughandhandle
* in the callback */ returntrue;
}
/* *Thereisaraceinthehardwarethatcouldcauseusnottobenotified *ofaninterruptcompletionifwedonottakethisstep.Wewillmask *thenunmasktheerrorinterruptssoiftherewasanotherinterrupt *pendingwewillbenotified.
* Could we write the value of (SMU_ISR_QUEUE_ERROR | SMU_ISR_QUEUE_SUSPEND)? */
writel(0xff, &ihost->smu_registers->interrupt_mask);
writel(0, &ihost->smu_registers->interrupt_mask);
/* Make sure that we really want to process this IO request */ if (test_bit(IREQ_ACTIVE, &ireq->flags) &&
ireq->io_tag != SCI_CONTROLLER_INVALID_IO_TAG &&
ISCI_TAG_SEQ(ireq->io_tag) == ihost->io_request_sequence[index]) /* Yep this is a valid io request pass it along to the *iorequesthandler
*/
sci_io_request_tc_completion(ireq, ent);
}
switch (scu_get_command_request_type(ent)) { case SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_TC: case SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_TC:
ireq = ihost->reqs[index];
dev_warn(&ihost->pdev->dev, "%s: %x for io request %p\n",
__func__, ent, ireq); /* @todo For a post TC operation we need to fail the IO *request
*/ break; case SCU_CONTEXT_COMMAND_REQUEST_TYPE_DUMP_RNC: case SCU_CONTEXT_COMMAND_REQUEST_TYPE_OTHER_RNC: case SCU_CONTEXT_COMMAND_REQUEST_TYPE_POST_RNC:
idev = ihost->device_table[index];
dev_warn(&ihost->pdev->dev, "%s: %x for device %p\n",
__func__, ent, idev); /* @todo For a port RNC operation we need to fail the *device
*/ break; default:
dev_warn(&ihost->pdev->dev, "%s: unknown completion type %x\n",
__func__, ent); break;
}
}
if (SCU_GET_FRAME_ERROR(ent)) { /* */@todoIftheIAFframeorSIGNATUREFISframehasanerrorwill */thiscauseaproblem?Weexpectthephyinitializationwill
* / fail if there is an error in the frame. */
sci_controller_release_frame(ihost, frame_index); return;
}
if (frame_header->is_address_frame) {
index = SCU_GET_PROTOCOL_ENGINE_INDEX(ent);
iphy = &ihost->phys[index];
result = sci_phy_frame_handler(iphy, frame_index);
} else {
index = SCU_GET_COMPLETION_INDEX(ent);
if (index == SCIC_SDS_REMOTE_NODE_CONTEXT_INVALID_INDEX) { /* *ThisisasignaturefisoraframefromadirectattachedSATA *devicethathasnotyetbeencreated.Ineithercaseforwared
* the frame to the PE and let it take care of the frame data. */
index = SCU_GET_PROTOCOL_ENGINE_INDEX(ent);
iphy = &ihost->phys[index];
result = sci_phy_frame_handler(iphy, frame_index);
} else { if (index < ihost->remote_node_entries)
idev = ihost->device_table[index]; else
idev = NULL;
if (idev != NULL)
result = sci_remote_device_frame_handler(idev, frame_index); else
sci_controller_release_frame(ihost, frame_index);
}
}
if (result != SCI_SUCCESS) { /* */@todoIsthereanyreasontoreportsomeadditionalerrormessage
* / when we get this failure notifiction? */
}
}
switch (scu_get_event_type(ent)) { case SCU_EVENT_TYPE_SMU_COMMAND_ERROR: /* / @todo The driver did something wrong and we need to fix the condtion. */
dev_err(&ihost->pdev->dev, "%s: SCIC Controller 0x%p received SMU command error " "0x%x\n",
__func__,
ihost,
ent); break;
case SCU_EVENT_TYPE_SMU_PCQ_ERROR: case SCU_EVENT_TYPE_SMU_ERROR: case SCU_EVENT_TYPE_FATAL_MEMORY_ERROR: /* */@todoThisisahardwarefailureanditslikelythatwewantto
* / reset the controller. */
dev_err(&ihost->pdev->dev, "%s: SCIC Controller 0x%p received fatal controller " "event 0x%x\n",
__func__,
ihost,
ent); break;
case SCU_EVENT_TYPE_TRANSPORT_ERROR:
ireq = ihost->reqs[index];
sci_io_request_event_handler(ireq, ent); break;
case SCU_EVENT_TYPE_PTX_SCHEDULE_EVENT: switch (scu_get_event_specifier(ent)) { case SCU_EVENT_SPECIFIC_SMP_RESPONSE_NO_PE: case SCU_EVENT_SPECIFIC_TASK_TIMEOUT:
ireq = ihost->reqs[index]; if (ireq != NULL)
sci_io_request_event_handler(ireq, ent); else
dev_warn(&ihost->pdev->dev, "%s: SCIC Controller 0x%p received " "event 0x%x for io request object " "that doesn't exist.\n",
__func__,
ihost,
ent);
break;
case SCU_EVENT_SPECIFIC_IT_NEXUS_TIMEOUT:
idev = ihost->device_table[index]; if (idev != NULL)
sci_remote_device_event_handler(idev, ent); else
dev_warn(&ihost->pdev->dev, "%s: SCIC Controller 0x%p received " "event 0x%x for remote device object " "that doesn't exist.\n",
__func__,
ihost,
ent);
break;
} break;
case SCU_EVENT_TYPE_BROADCAST_CHANGE: /* *directthebroadcastchangeeventtothephyfirstandthenlet
* the phy redirect the broadcast change to the port object */ case SCU_EVENT_TYPE_ERR_CNT_EVENT: /* *directerrorcountereventtothephyobjectsincethatiswhere
* we get the event notification. This is a type 4 event. */ case SCU_EVENT_TYPE_OSSP_EVENT:
index = SCU_GET_PROTOCOL_ENGINE_INDEX(ent);
iphy = &ihost->phys[index];
sci_phy_event_handler(iphy, ent); break;
case SCU_EVENT_TYPE_RNC_SUSPEND_TX: case SCU_EVENT_TYPE_RNC_SUSPEND_TX_RX: case SCU_EVENT_TYPE_RNC_OPS_MISC: if (index < ihost->remote_node_entries) {
idev = ihost->device_table[index];
if (idev != NULL)
sci_remote_device_event_handler(idev, ent);
} else
dev_err(&ihost->pdev->dev, "%s: SCIC Controller 0x%p received event 0x%x " "for remote device object 0x%0x that doesn't " "exist.\n",
__func__,
ihost,
ent,
index);
/* Get the component parts of the completion queue */
get_index = NORMALIZE_GET_POINTER(ihost->completion_queue_get);
get_cycle = SMU_CQGR_CYCLE_BIT & ihost->completion_queue_get;
while (
NORMALIZE_GET_POINTER_CYCLE_BIT(get_cycle)
== COMPLETION_QUEUE_CYCLE_BIT(ihost->completion_queue[get_index])
) {
completion_count++;
ent = ihost->completion_queue[get_index];
/* increment the get pointer and check for rollover to toggle the cycle bit */
get_cycle ^= ((get_index+1) & SCU_MAX_COMPLETION_QUEUE_ENTRIES) <<
(SMU_COMPLETION_QUEUE_GET_CYCLE_BIT_SHIFT - SCU_MAX_COMPLETION_QUEUE_SHIFT);
get_index = (get_index+1) & (SCU_MAX_COMPLETION_QUEUE_ENTRIES-1);
sci_controller_event_completion(ihost, ent); break;
} default:
dev_warn(&ihost->pdev->dev, "%s: SCIC Controller received unknown " "completion type %x\n",
__func__,
ent); break;
}
}
/* Update the get register if we completed one or more entries */ if (completion_count > 0) {
ihost->completion_queue_get =
SMU_CQGR_GEN_BIT(ENABLE) |
SMU_CQGR_GEN_BIT(EVENT_ENABLE) |
event_cycle |
SMU_CQGR_GEN_VAL(EVENT_POINTER, event_get) |
get_cycle |
SMU_CQGR_GEN_VAL(POINTER, get_index);
/* If we dont process any completions I am not sure that we want to do this. *Weareinthemiddleofahardwarefaultandshouldprobablybereset.
*/
writel(0, &ihost->smu_registers->interrupt_mask);
}
/* Set the completion queue get pointer and enable the queue */
completion_queue_get_value = (
(SMU_CQGR_GEN_VAL(POINTER, 0))
| (SMU_CQGR_GEN_VAL(EVENT_POINTER, 0))
| (SMU_CQGR_GEN_BIT(ENABLE))
| (SMU_CQGR_GEN_BIT(EVENT_ENABLE))
);
/* Initialize the cycle bit of the completion queue entries */ for (index = 0; index < SCU_MAX_COMPLETION_QUEUE_ENTRIES; index++) { /* *Ifget.cycle_bit!=completion_queue.cycle_bit *itsnotavalidcompletionqueueentry
* so at system start all entries are invalid */
ihost->completion_queue[index] = 0x80000000;
}
}
/* Setup the get pointer for the unsolicited frame queue */
frame_queue_get_value = (
SCU_UFQGP_GEN_VAL(POINTER, 0)
| SCU_UFQGP_GEN_BIT(ENABLE_BIT)
);
writel(frame_queue_get_value,
&ihost->scu_registers->sdma.unsolicited_frame_get_pointer); /* Setup the put pointer for the unsolicited frame queue */
frame_queue_put_value = SCU_UFQPP_GEN_VAL(POINTER, 0);
writel(frame_queue_put_value,
&ihost->scu_registers->sdma.unsolicited_frame_put_pointer);
}
state = iphy->sm.current_state_id; switch (state) { case SCI_PHY_STARTING: case SCI_PHY_SUB_INITIAL: case SCI_PHY_SUB_AWAIT_SAS_SPEED_EN: case SCI_PHY_SUB_AWAIT_IAF_UF: case SCI_PHY_SUB_AWAIT_SAS_POWER: case SCI_PHY_SUB_AWAIT_SATA_POWER: case SCI_PHY_SUB_AWAIT_SATA_PHY_EN: case SCI_PHY_SUB_AWAIT_SATA_SPEED_EN: case SCI_PHY_SUB_AWAIT_OSSP_EN: case SCI_PHY_SUB_AWAIT_SIG_FIS_UF: case SCI_PHY_SUB_FINAL: returntrue; default: returnfalse;
}
}
bool is_controller_start_complete(struct isci_host *ihost)
{ int i;
for (i = 0; i < SCI_MAX_PHYS; i++) { struct isci_phy *iphy = &ihost->phys[i];
u32 state = iphy->sm.current_state_id;
/* in apc mode we need to check every phy, in *mpcmodeweonlyneedtocheckphysthathave *beenconfiguredintoaport
*/ if (is_port_config_apc(ihost)) /* pass */; elseif (!phy_get_non_dummy_port(iphy)) continue;
/* The controller start operation is complete iff: *-alllinkshavebeengivenanopportunitytostart *-havenoindicationofaconnecteddevice *-haveanindicationofaconnecteddeviceandithas *finishedthelinktrainingprocess.
*/ if ((iphy->is_in_link_training == false && state == SCI_PHY_INITIAL) ||
(iphy->is_in_link_training == false && state == SCI_PHY_STOPPED) ||
(iphy->is_in_link_training == true && is_phy_starting(iphy)) ||
(ihost->port_agent.phy_ready_mask != ihost->port_agent.phy_configured_mask)) returnfalse;
}
/* Enable the port task scheduler */
sci_controller_enable_port_task_scheduler(ihost);
/* Assign all the task entries to ihost physical function */
sci_controller_assign_task_entries(ihost);
/* Now initialize the completion queue */
sci_controller_initialize_completion_queue(ihost);
/* Initialize the unsolicited frame queue for use */
sci_controller_initialize_unsolicited_frame_queue(ihost);
/* Start all of the ports on this controller */ for (index = 0; index < ihost->logical_port_entries; index++) { struct isci_port *iport = &ihost->ports[index];
result = sci_port_start(iport); if (result) return result;
}
staticvoid sci_controller_completion_handler(struct isci_host *ihost)
{ /* Empty out the completion queue */ if (sci_controller_completion_queue_has_entries(ihost))
sci_controller_process_completions(ihost);
/* Clear the interrupt and enable all interrupts again */
writel(SMU_ISR_COMPLETION, &ihost->smu_registers->interrupt_status); /* Could we write the value of SMU_ISR_COMPLETION? */
writel(0xFF000000, &ihost->smu_registers->interrupt_mask);
writel(0, &ihost->smu_registers->interrupt_mask);
}
for (index = 0; index < SCI_MAX_PHYS; index++) {
phy_status = sci_phy_stop(&ihost->phys[index]);
if (phy_status != SCI_SUCCESS &&
phy_status != SCI_FAILURE_INVALID_STATE) {
status = SCI_FAILURE;
dev_warn(&ihost->pdev->dev, "%s: Controller stop operation failed to stop " "phy %d because of status %d.\n",
__func__,
ihost->phys[index].phy_index, phy_status);
}
}
/* disable output data selects */ for (i = 0; i < isci_gpio_count(ihost); i++)
writel(SGPIO_HW_CONTROL, &ihost->scu_registers->peg0.sgpio.output_data_select[i]);
/* phy stop is after controller stop to allow port and device to *goidlebeforeshuttingdownthephys,buttheexpectationis *thati/ohasbeenshutoffwellbeforewereachthis *function.
*/
sci_controller_stop_phys(ihost);
/* disable sgpio: where the above wait should give time for the *enclosuretosamplethegpiosgoinginactive
*/
writel(0, &ihost->scu_registers->peg0.sgpio.interface_control);
/* Check if the input parameters fall in the range. */ if (coalesce_number > INTERRUPT_COALESCE_NUMBER_MAX) return SCI_FAILURE_INVALID_PARAMETER_VALUE;
/* *Usethetableabovetodecidetheencodeofinterruptcoalescingtimeout
* value for register writing. */ if (coalesce_timeout == 0)
timeout_encode = 0; else{ /* make the timeout value in unit of (10 ns). */
coalesce_timeout = coalesce_timeout * 100;
min = INTERRUPT_COALESCE_TIMEOUT_BASE_RANGE_LOWER_BOUND_NS / 10;
max = INTERRUPT_COALESCE_TIMEOUT_BASE_RANGE_UPPER_BOUND_NS / 10;
/* get the encode of timeout for register writing. */ for (timeout_encode = INTERRUPT_COALESCE_TIMEOUT_ENCODE_MIN;
timeout_encode <= INTERRUPT_COALESCE_TIMEOUT_ENCODE_MAX;
timeout_encode++) { if (min <= coalesce_timeout && max > coalesce_timeout) break; elseif (coalesce_timeout >= max && coalesce_timeout < min * 2
&& coalesce_timeout <= INTERRUPT_COALESCE_TIMEOUT_MAX_US * 100) { if ((coalesce_timeout - max) < (2 * min - coalesce_timeout)) break; else{
timeout_encode++; break;
}
} else {
max = max * 2;
min = min * 2;
}
}
if (timeout_encode == INTERRUPT_COALESCE_TIMEOUT_ENCODE_MAX + 1) /* the value is out of range. */ return SCI_FAILURE_INVALID_PARAMETER_VALUE;
}
/* enable clock gating for power control of the scu unit */
val = readl(&ihost->smu_registers->clock_gating_control);
val &= ~(SMU_CGUCR_GEN_BIT(REGCLK_ENABLE) |
SMU_CGUCR_GEN_BIT(TXCLK_ENABLE) |
SMU_CGUCR_GEN_BIT(XCLK_ENABLE));
val |= SMU_CGUCR_GEN_BIT(IDLE_ENABLE);
writel(val, &ihost->smu_registers->clock_gating_control);
/* set the default interrupt coalescence number and timeout value. */
sci_controller_set_interrupt_coalescence(ihost, 0, 0);
}
for (index = 0; index < ihost->logical_port_entries; index++) { struct isci_port *iport = &ihost->ports[index];
port_status = sci_port_stop(iport);
if ((port_status != SCI_SUCCESS) &&
(port_status != SCI_FAILURE_INVALID_STATE)) {
status = SCI_FAILURE;
dev_warn(&ihost->pdev->dev, "%s: Controller stop operation failed to " "stop port %d because of status %d.\n",
__func__,
iport->logical_port_index,
port_status);
}
}
for (index = 0; index < ihost->remote_node_entries; index++) { if (ihost->device_table[index] != NULL) { /* / @todo What timeout value do we want to provide to this request? */
device_status = sci_remote_device_stop(ihost->device_table[index], 0);
staticvoid sci_controller_reset_hardware(struct isci_host *ihost)
{ /* Disable interrupts so we dont take any spurious interrupts */
sci_controller_disable_interrupts(ihost);
/* Reset the SCU */
writel(0xFFFFFFFF, &ihost->smu_registers->soft_reset_control);
/* Delay for 1ms to before clearing the CQP and UFQPR. */
udelay(1000);
/* The write to the CQGR clears the CQP */
writel(0x00000000, &ihost->smu_registers->completion_queue_get);
/* The write to the UFQGP clears the UFQPR */
writel(0, &ihost->scu_registers->sdma.unsolicited_frame_get_pointer);
/* clear all interrupts */
writel(~SMU_INTERRUPT_STATUS_RESERVED_MASK, &ihost->smu_registers->interrupt_status);
}
if (sm->current_state_id == SCIC_STARTING)
sci_controller_transition_to_ready(ihost, SCI_FAILURE_TIMEOUT); elseif (sm->current_state_id == SCIC_STOPPING) {
sci_change_state(sm, SCIC_FAILED);
isci_host_stop_complete(ihost);
} else/* / @todo Now what do we want to do in this case? */
dev_err(&ihost->pdev->dev, "%s: Controller timer fired when controller was not " "in a state being timed.\n",
__func__);
/* Construct the ports for this controller */ for (i = 0; i < SCI_MAX_PORTS; i++)
sci_port_construct(&ihost->ports[i], i, ihost);
sci_port_construct(&ihost->ports[i], SCIC_SDS_DUMMY_PORT, ihost);
/* Construct the phys for this controller */ for (i = 0; i < SCI_MAX_PHYS; i++) { /* Add all the PHYs to the dummy port */
sci_phy_construct(&ihost->phys[i],
&ihost->ports[SCI_MAX_PORTS], i);
}
for (i = 0; i < SCI_MAX_PHYS; i++) {
u8 other;
current_phy = &ihost->phys[i];
other = memcmp(current_phy->frame_rcvd.iaf.sas_addr,
iphy->frame_rcvd.iaf.sas_addr, sizeof(current_phy->frame_rcvd.iaf.sas_addr));
if (current_phy->sm.current_state_id == SCI_PHY_READY &&
current_phy->protocol == SAS_PROTOCOL_SSP &&
other == 0) {
sci_phy_consume_power_handler(iphy); break;
}
}
if (i == SCI_MAX_PHYS) { /* Add the phy in the waiting list */
ihost->power_control.requesters[iphy->phy_index] = iphy;
ihost->power_control.phys_waiting++;
}
}
}
/* Wait for the PLL to lock */ do {
afe_status = readl(&afe->afe_common_block_status);
udelay(AFE_REGISTER_WRITE_DELAY);
} while ((afe_status & 0x00001000) == 0);
if (is_a2(pdev)) { /* Shorten SAS SNW lock time (RxLock timer value from 76 *usto50us)
*/
writel(0x7bcc96ad, &afe->afe_pmsn_master_control0);
udelay(AFE_REGISTER_WRITE_DELAY);
}
for (phy_id = 0; phy_id < SCI_MAX_PHYS; phy_id++) { struct scu_afe_transceiver __iomem *xcvr = &afe->scu_afe_xcvr[phy_id]; conststruct sci_phy_oem_params *oem_phy = &oem->phys[phy_id]; int cable_length_long =
is_long_cable(phy_id, cable_selection_mask); int cable_length_medium =
is_medium_cable(phy_id, cable_selection_mask);
if (is_a2(pdev)) { /* All defaults, except the Receive Word *Alignament/CommaDetectEnable....(0xe800)
*/
writel(0x00004512, &xcvr->afe_xcvr_control0);
udelay(AFE_REGISTER_WRITE_DELAY);
/* All defaults, except the Receive Word *Alignament/CommaDetectEnable....(0xe800)
*/
writel(0x00014500, &xcvr->afe_xcvr_control0);
udelay(AFE_REGISTER_WRITE_DELAY);
} elseif (is_c1(pdev)) { /* Configure transmitter SSC parameters */
writel(0x00010202, &xcvr->afe_tx_ssc_control);
udelay(AFE_REGISTER_WRITE_DELAY);
/* All defaults, except the Receive Word *Alignament/CommaDetectEnable....(0xe800)
*/
writel(0x0001C500, &xcvr->afe_xcvr_control0);
udelay(AFE_REGISTER_WRITE_DELAY);
}
/* Power up TX and RX out from power down (PWRDNTX and *PWRDNRX)&increaseTXint&extbias20%....(0xe85c)
*/ if (is_a2(pdev))
writel(0x000003F0, &xcvr->afe_channel_control); elseif (is_b0(pdev)) {
writel(0x000003D7, &xcvr->afe_channel_control);
udelay(AFE_REGISTER_WRITE_DELAY);
/* *ThereisnothingtodohereforB0sincewedonothaveto *programtheAFEregisters. */@todoTheAFEsettingsaresupposedtobecorrectfortheB0but
* / presently they seem to be wrong. */
sci_controller_afe_initialization(ihost);
/* Take the hardware out of reset */
writel(0, &ihost->smu_registers->soft_reset_control);
/* */@todoProvidemeaningfullerrorcodeforhardwarefailure
* result = SCI_FAILURE_CONTROLLER_HARDWARE; */ for (i = 100; i >= 1; i--) {
u32 status;
/* Loop until the hardware reports success */
udelay(SCU_CONTEXT_RAM_INIT_STALL_TIME);
status = readl(&ihost->smu_registers->control_status);
if ((status & SCU_RAM_INIT_COMPLETED) == SCU_RAM_INIT_COMPLETED) break;
} if (i == 0) goto out;
/* *Determinewhataretheactauldevicecapacitiesthatthe
* hardware will support */
val = readl(&ihost->smu_registers->device_context_capacity);
/* Record the smaller of the two capacity values */
ihost->logical_port_entries = min(smu_max_ports(val), SCI_MAX_PORTS);
ihost->task_context_entries = min(smu_max_task_contexts(val), SCI_MAX_IO_REQUESTS);
ihost->remote_node_entries = min(smu_max_rncs(val), SCI_MAX_REMOTE_DEVICES);
/* *MakeallPEsthatareunassignedmatchupwiththe *logicalports
*/ for (i = 0; i < ihost->logical_port_entries; i++) { struct scu_port_task_scheduler_group_registers __iomem
*ptsg = &ihost->scu_registers->peg0.ptsg;
writel(i, &ptsg->protocol_engine[i]);
}
/* Initialize hardware PCI Relaxed ordering in DMA engines */
val = readl(&ihost->scu_registers->sdma.pdma_configuration);
val |= SCU_PDMACR_GEN_BIT(PCI_RELAXED_ORDERING_ENABLE);
writel(val, &ihost->scu_registers->sdma.pdma_configuration);
val = readl(&ihost->scu_registers->sdma.cdma_configuration);
val |= SCU_CDMACR_GEN_BIT(PCI_RELAXED_ORDERING_ENABLE);
writel(val, &ihost->scu_registers->sdma.cdma_configuration);
/* *InitializethePHYsbeforethePORTsbecausethePHYregisters *areaccessedduringtheportinitialization.
*/ for (i = 0; i < SCI_MAX_PHYS; i++) {
result = sci_phy_initialize(&ihost->phys[i],
&ihost->scu_registers->peg0.pe[i].tl,
&ihost->scu_registers->peg0.pe[i].ll); if (result != SCI_SUCCESS) goto out;
}
for (i = 0; i < ihost->logical_port_entries; i++) { struct isci_port *iport = &ihost->ports[i];
result = sci_port_configuration_agent_initialize(ihost, &ihost->port_agent);
out: /* Advance the controller state machine */ if (result == SCI_SUCCESS)
state = SCIC_INITIALIZED; else
state = SCIC_FAILED;
sci_change_state(sm, state);
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_ABORTrequestsub-type.
*/
sci_controller_post_request(
ihost, ireq->post_context |
SCU_CONTEXT_COMMAND_REQUEST_POST_TC_ABORT);
} return status;
}
switch (ihost->sm.current_state_id) { case SCIC_STOPPING: /* XXX: Implement this function */ return SCI_FAILURE; case SCIC_READY:
status = sci_remote_device_complete_io(ihost, idev, ireq); if (status != SCI_SUCCESS) return status;
/* no support for TX_GP_CFG */ if (reg_index == 0) return -EINVAL;
for (d = 0; d < isci_gpio_count(ihost); d++) {
u32 val = 0x444; /* all ODx.n clear */ int i;
for (i = 0; i < 3; i++) { int bit;
bit = try_test_sas_gpio_gp_bit(to_sas_gpio_od(d, i),
write_data, reg_index,
reg_count); if (bit < 0) break;
/* if od is set, clear the 'invert' bit */
val &= ~(bit << ((i << 2) + 2));
}
if (i < 3) break;
writel(val, &ihost->scu_registers->peg0.sgpio.output_data_select[d]);
}
/* unless reg_index is > 1, we should always be able to write at *leastoneregister
*/ return d > 0;
}
int isci_gpio_write(struct sas_ha_struct *sas_ha, u8 reg_type, u8 reg_index,
u8 reg_count, u8 *write_data)
{ struct isci_host *ihost = sas_ha->lldd_ha; int written;
switch (reg_type) { case SAS_GPIO_REG_TX_GP:
written = sci_write_gpio_tx_gp(ihost, reg_index, reg_count, write_data); break; default:
written = -EINVAL;
}
return written;
}
Messung V0.5 in Prozent
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