#include <linux/types.h>
#include <linux/smp_lock.h>
#include <linux/pci.h>
-#include <linux/workqueue.h>
#include "../pci.h"
#include "shpchp.h"
-static void interrupt_event_handler(void *data);
-static int shpchp_enable_slot(struct slot *p_slot);
-static int shpchp_disable_slot(struct slot *p_slot);
+static void interrupt_event_handler(struct controller *ctrl);
-static int queue_interrupt_event(struct slot *p_slot, u32 event_type)
-{
- struct event_info *info;
-
- info = kmalloc(sizeof(*info), GFP_ATOMIC);
- if (!info)
- return -ENOMEM;
-
- info->event_type = event_type;
- info->p_slot = p_slot;
- INIT_WORK(&info->work, interrupt_event_handler, info);
-
- schedule_work(&info->work);
-
- return 0;
-}
+static struct semaphore event_semaphore; /* mutex for process loop (up if something to process) */
+static struct semaphore event_exit; /* guard ensure thread has exited before calling it quits */
+static int event_finished;
+static unsigned long pushbutton_pending; /* = 0 */
u8 shpchp_handle_attention_button(u8 hp_slot, void *inst_id)
{
struct controller *ctrl = (struct controller *) inst_id;
struct slot *p_slot;
- u32 event_type;
+ u8 rc = 0;
+ u8 getstatus;
+ struct event_info *taskInfo;
/* Attention Button Change */
dbg("shpchp: Attention button interrupt received.\n");
+ /* This is the structure that tells the worker thread what to do */
+ taskInfo = &(ctrl->event_queue[ctrl->next_event]);
p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
+
p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save));
+ p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
+
+ ctrl->next_event = (ctrl->next_event + 1) % 10;
+ taskInfo->hp_slot = hp_slot;
+
+ rc++;
/*
* Button pressed - See if need to TAKE ACTION!!!
*/
- info("Button pressed on Slot(%s)\n", p_slot->name);
- event_type = INT_BUTTON_PRESS;
+ info("Button pressed on Slot(%d)\n", ctrl->first_slot + hp_slot);
+ taskInfo->event_type = INT_BUTTON_PRESS;
+
+ if ((p_slot->state == BLINKINGON_STATE)
+ || (p_slot->state == BLINKINGOFF_STATE)) {
+ /* Cancel if we are still blinking; this means that we press the
+ * attention again before the 5 sec. limit expires to cancel hot-add
+ * or hot-remove
+ */
+ taskInfo->event_type = INT_BUTTON_CANCEL;
+ info("Button cancel on Slot(%d)\n", ctrl->first_slot + hp_slot);
+ } else if ((p_slot->state == POWERON_STATE)
+ || (p_slot->state == POWEROFF_STATE)) {
+ /* Ignore if the slot is on power-on or power-off state; this
+ * means that the previous attention button action to hot-add or
+ * hot-remove is undergoing
+ */
+ taskInfo->event_type = INT_BUTTON_IGNORE;
+ info("Button ignore on Slot(%d)\n", ctrl->first_slot + hp_slot);
+ }
- queue_interrupt_event(p_slot, event_type);
+ if (rc)
+ up(&event_semaphore); /* signal event thread that new event is posted */
return 0;
{
struct controller *ctrl = (struct controller *) inst_id;
struct slot *p_slot;
+ u8 rc = 0;
u8 getstatus;
- u32 event_type;
+ struct event_info *taskInfo;
/* Switch Change */
dbg("shpchp: Switch interrupt received.\n");
+ /* This is the structure that tells the worker thread
+ * what to do
+ */
+ taskInfo = &(ctrl->event_queue[ctrl->next_event]);
+ ctrl->next_event = (ctrl->next_event + 1) % 10;
+ taskInfo->hp_slot = hp_slot;
+
+ rc++;
p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save));
p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
/*
* Switch opened
*/
- info("Latch open on Slot(%s)\n", p_slot->name);
- event_type = INT_SWITCH_OPEN;
+ info("Latch open on Slot(%d)\n", ctrl->first_slot + hp_slot);
+ taskInfo->event_type = INT_SWITCH_OPEN;
if (p_slot->pwr_save && p_slot->presence_save) {
- event_type = INT_POWER_FAULT;
+ taskInfo->event_type = INT_POWER_FAULT;
err("Surprise Removal of card\n");
}
} else {
/*
* Switch closed
*/
- info("Latch close on Slot(%s)\n", p_slot->name);
- event_type = INT_SWITCH_CLOSE;
+ info("Latch close on Slot(%d)\n", ctrl->first_slot + hp_slot);
+ taskInfo->event_type = INT_SWITCH_CLOSE;
}
- queue_interrupt_event(p_slot, event_type);
+ if (rc)
+ up(&event_semaphore); /* signal event thread that new event is posted */
- return 1;
+ return rc;
}
u8 shpchp_handle_presence_change(u8 hp_slot, void *inst_id)
{
struct controller *ctrl = (struct controller *) inst_id;
struct slot *p_slot;
- u32 event_type;
+ u8 rc = 0;
+ /*u8 temp_byte;*/
+ struct event_info *taskInfo;
/* Presence Change */
dbg("shpchp: Presence/Notify input change.\n");
+ /* This is the structure that tells the worker thread
+ * what to do
+ */
+ taskInfo = &(ctrl->event_queue[ctrl->next_event]);
+ ctrl->next_event = (ctrl->next_event + 1) % 10;
+ taskInfo->hp_slot = hp_slot;
+
+ rc++;
p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
/*
/*
* Card Present
*/
- info("Card present on Slot(%s)\n", p_slot->name);
- event_type = INT_PRESENCE_ON;
+ info("Card present on Slot(%d)\n", ctrl->first_slot + hp_slot);
+ taskInfo->event_type = INT_PRESENCE_ON;
} else {
/*
* Not Present
*/
- info("Card not present on Slot(%s)\n", p_slot->name);
- event_type = INT_PRESENCE_OFF;
+ info("Card not present on Slot(%d)\n", ctrl->first_slot + hp_slot);
+ taskInfo->event_type = INT_PRESENCE_OFF;
}
- queue_interrupt_event(p_slot, event_type);
+ if (rc)
+ up(&event_semaphore); /* signal event thread that new event is posted */
- return 1;
+ return rc;
}
u8 shpchp_handle_power_fault(u8 hp_slot, void *inst_id)
{
struct controller *ctrl = (struct controller *) inst_id;
struct slot *p_slot;
- u32 event_type;
+ u8 rc = 0;
+ struct event_info *taskInfo;
/* Power fault */
dbg("shpchp: Power fault interrupt received.\n");
+ /* This is the structure that tells the worker thread
+ * what to do
+ */
+ taskInfo = &(ctrl->event_queue[ctrl->next_event]);
+ ctrl->next_event = (ctrl->next_event + 1) % 10;
+ taskInfo->hp_slot = hp_slot;
+
+ rc++;
p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) {
/*
* Power fault Cleared
*/
- info("Power fault cleared on Slot(%s)\n", p_slot->name);
+ info("Power fault cleared on Slot(%d)\n", ctrl->first_slot + hp_slot);
p_slot->status = 0x00;
- event_type = INT_POWER_FAULT_CLEAR;
+ taskInfo->event_type = INT_POWER_FAULT_CLEAR;
} else {
/*
* Power fault
*/
- info("Power fault on Slot(%s)\n", p_slot->name);
- event_type = INT_POWER_FAULT;
+ info("Power fault on Slot(%d)\n", ctrl->first_slot + hp_slot);
+ taskInfo->event_type = INT_POWER_FAULT;
/* set power fault status for this board */
p_slot->status = 0xFF;
info("power fault bit %x set\n", hp_slot);
}
+ if (rc)
+ up(&event_semaphore); /* signal event thread that new event is posted */
- queue_interrupt_event(p_slot, event_type);
-
- return 1;
+ return rc;
}
/* The following routines constitute the bulk of the
int rc = 0;
dbg("%s: change to speed %d\n", __FUNCTION__, speed);
+ down(&ctrl->crit_sect);
if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, speed))) {
- err("%s: Issue of set bus speed mode command failed\n",
- __FUNCTION__);
+ err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__);
+ up(&ctrl->crit_sect);
return WRONG_BUS_FREQUENCY;
}
+
+ if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
+ err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n",
+ __FUNCTION__);
+ err("%s: Error code (%d)\n", __FUNCTION__, rc);
+ up(&ctrl->crit_sect);
+ return WRONG_BUS_FREQUENCY;
+ }
+ up(&ctrl->crit_sect);
return rc;
}
enum pci_bus_speed msp)
{
int rc = 0;
-
- /*
- * If other slots on the same bus are occupied, we cannot
- * change the bus speed.
- */
- if (flag) {
- if (asp < bsp) {
- err("%s: speed of bus %x and adapter %x mismatch\n",
- __FUNCTION__, bsp, asp);
- rc = WRONG_BUS_FREQUENCY;
+
+ if (flag != 0) { /* Other slots on the same bus are occupied */
+ if ( asp < bsp ) {
+ err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bsp, asp);
+ return WRONG_BUS_FREQUENCY;
}
- return rc;
- }
-
- if (asp < msp) {
- if (bsp != asp)
- rc = change_bus_speed(ctrl, pslot, asp);
} else {
- if (bsp != msp)
- rc = change_bus_speed(ctrl, pslot, msp);
+ /* Other slots on the same bus are empty */
+ if (msp == bsp) {
+ /* if adapter_speed >= bus_speed, do nothing */
+ if (asp < bsp) {
+ /*
+ * Try to lower bus speed to accommodate the adapter if other slots
+ * on the same controller are empty
+ */
+ if ((rc = change_bus_speed(ctrl, pslot, asp)))
+ return rc;
+ }
+ } else {
+ if (asp < msp) {
+ if ((rc = change_bus_speed(ctrl, pslot, asp)))
+ return rc;
+ } else {
+ if ((rc = change_bus_speed(ctrl, pslot, msp)))
+ return rc;
+ }
+ }
}
return rc;
}
u8 hp_slot;
u8 slots_not_empty = 0;
int rc = 0;
- enum pci_bus_speed asp, bsp, msp;
+ enum pci_bus_speed adapter_speed, bus_speed, max_bus_speed;
+ u8 pi, mode;
struct controller *ctrl = p_slot->ctrl;
hp_slot = p_slot->device - ctrl->slot_device_offset;
__FUNCTION__, p_slot->device,
ctrl->slot_device_offset, hp_slot);
+ /* Wait for exclusive access to hardware */
+ down(&ctrl->crit_sect);
+
/* Power on slot without connecting to bus */
rc = p_slot->hpc_ops->power_on_slot(p_slot);
if (rc) {
err("%s: Failed to power on slot\n", __FUNCTION__);
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
return -1;
}
+ rc = p_slot->hpc_ops->check_cmd_status(ctrl);
+ if (rc) {
+ err("%s: Failed to power on slot, error code(%d)\n", __FUNCTION__, rc);
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
+ return -1;
+ }
+
+
if ((ctrl->pci_dev->vendor == 0x8086) && (ctrl->pci_dev->device == 0x0332)) {
if (slots_not_empty)
return WRONG_BUS_FREQUENCY;
if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, PCI_SPEED_33MHz))) {
err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__);
+ up(&ctrl->crit_sect);
return WRONG_BUS_FREQUENCY;
}
+ if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
+ err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n",
+ __FUNCTION__);
+ err("%s: Error code (%d)\n", __FUNCTION__, rc);
+ up(&ctrl->crit_sect);
+ return WRONG_BUS_FREQUENCY;
+ }
/* turn on board, blink green LED, turn off Amber LED */
if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) {
err("%s: Issue of Slot Enable command failed\n", __FUNCTION__);
+ up(&ctrl->crit_sect);
return rc;
}
+
+ if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
+ err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__, rc);
+ up(&ctrl->crit_sect);
+ return rc;
+ }
}
- rc = p_slot->hpc_ops->get_adapter_speed(p_slot, &asp);
- if (rc) {
- err("%s: Can't get adapter speed or bus mode mismatch\n",
- __FUNCTION__);
+ rc = p_slot->hpc_ops->get_adapter_speed(p_slot, &adapter_speed);
+ /* 0 = PCI 33Mhz, 1 = PCI 66 Mhz, 2 = PCI-X 66 PA, 4 = PCI-X 66 ECC, */
+ /* 5 = PCI-X 133 PA, 7 = PCI-X 133 ECC, 0xa = PCI-X 133 Mhz 266, */
+ /* 0xd = PCI-X 133 Mhz 533 */
+ /* This encoding is different from the one used in cur_bus_speed & */
+ /* max_bus_speed */
+
+ if (rc || adapter_speed == PCI_SPEED_UNKNOWN) {
+ err("%s: Can't get adapter speed or bus mode mismatch\n", __FUNCTION__);
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
return WRONG_BUS_FREQUENCY;
}
- rc = p_slot->hpc_ops->get_cur_bus_speed(p_slot, &bsp);
- if (rc) {
+ rc = p_slot->hpc_ops->get_cur_bus_speed(p_slot, &bus_speed);
+ if (rc || bus_speed == PCI_SPEED_UNKNOWN) {
err("%s: Can't get bus operation speed\n", __FUNCTION__);
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
return WRONG_BUS_FREQUENCY;
}
- rc = p_slot->hpc_ops->get_max_bus_speed(p_slot, &msp);
- if (rc) {
+ rc = p_slot->hpc_ops->get_max_bus_speed(p_slot, &max_bus_speed);
+ if (rc || max_bus_speed == PCI_SPEED_UNKNOWN) {
err("%s: Can't get max bus operation speed\n", __FUNCTION__);
- msp = bsp;
+ max_bus_speed = bus_speed;
+ }
+
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
+
+ if ((rc = p_slot->hpc_ops->get_prog_int(p_slot, &pi))) {
+ err("%s: Can't get controller programming interface, set it to 1\n", __FUNCTION__);
+ pi = 1;
}
/* Check if there are other slots or devices on the same bus */
if (!list_empty(&ctrl->pci_dev->subordinate->devices))
slots_not_empty = 1;
- dbg("%s: slots_not_empty %d, adapter_speed %d, bus_speed %d, "
- "max_bus_speed %d\n", __FUNCTION__, slots_not_empty, asp,
- bsp, msp);
+ dbg("%s: slots_not_empty %d, pi %d\n", __FUNCTION__,
+ slots_not_empty, pi);
+ dbg("adapter_speed %d, bus_speed %d, max_bus_speed %d\n",
+ adapter_speed, bus_speed, max_bus_speed);
- rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, asp, bsp, msp);
- if (rc)
- return rc;
+ if (pi == 2) {
+ dbg("%s: In PI = %d\n", __FUNCTION__, pi);
+ if ((rc = p_slot->hpc_ops->get_mode1_ECC_cap(p_slot, &mode))) {
+ err("%s: Can't get Mode1_ECC, set mode to 0\n", __FUNCTION__);
+ mode = 0;
+ }
+ switch (adapter_speed) {
+ case PCI_SPEED_133MHz_PCIX_533:
+ case PCI_SPEED_133MHz_PCIX_266:
+ if ((bus_speed != adapter_speed) &&
+ ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed))))
+ return rc;
+ break;
+ case PCI_SPEED_133MHz_PCIX_ECC:
+ case PCI_SPEED_133MHz_PCIX:
+ if (mode) { /* Bus - Mode 1 ECC */
+ if ((bus_speed != 0x7) &&
+ ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed))))
+ return rc;
+ } else {
+ if ((bus_speed != 0x4) &&
+ ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed))))
+ return rc;
+ }
+ break;
+ case PCI_SPEED_66MHz_PCIX_ECC:
+ case PCI_SPEED_66MHz_PCIX:
+ if (mode) { /* Bus - Mode 1 ECC */
+ if ((bus_speed != 0x5) &&
+ ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed))))
+ return rc;
+ } else {
+ if ((bus_speed != 0x2) &&
+ ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed))))
+ return rc;
+ }
+ break;
+ case PCI_SPEED_66MHz:
+ if ((bus_speed != 0x1) &&
+ ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed))))
+ return rc;
+ break;
+ case PCI_SPEED_33MHz:
+ if (bus_speed > 0x0) {
+ if (slots_not_empty == 0) {
+ if ((rc = change_bus_speed(ctrl, p_slot, adapter_speed)))
+ return rc;
+ } else {
+ err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bus_speed, adapter_speed);
+ return WRONG_BUS_FREQUENCY;
+ }
+ }
+ break;
+ default:
+ err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bus_speed, adapter_speed);
+ return WRONG_BUS_FREQUENCY;
+ }
+ } else {
+ /* If adpater_speed == bus_speed, nothing to do here */
+ dbg("%s: In PI = %d\n", __FUNCTION__, pi);
+ if ((adapter_speed != bus_speed) &&
+ ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed))))
+ return rc;
+ }
+
+ down(&ctrl->crit_sect);
/* turn on board, blink green LED, turn off Amber LED */
if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) {
err("%s: Issue of Slot Enable command failed\n", __FUNCTION__);
+ up(&ctrl->crit_sect);
return rc;
}
+ if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
+ err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__, rc);
+ up(&ctrl->crit_sect);
+ return rc;
+ }
+
+ up(&ctrl->crit_sect);
+
/* Wait for ~1 second */
- msleep(1000);
+ wait_for_ctrl_irq (ctrl);
dbg("%s: slot status = %x\n", __FUNCTION__, p_slot->status);
/* Check for a power fault */
p_slot->is_a_board = 0x01;
p_slot->pwr_save = 1;
+ /* Wait for exclusive access to hardware */
+ down(&ctrl->crit_sect);
+
p_slot->hpc_ops->green_led_on(p_slot);
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
+
return 0;
err_exit:
+ /* Wait for exclusive access to hardware */
+ down(&ctrl->crit_sect);
+
/* turn off slot, turn on Amber LED, turn off Green LED */
rc = p_slot->hpc_ops->slot_disable(p_slot);
if (rc) {
err("%s: Issue of Slot Disable command failed\n", __FUNCTION__);
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
return rc;
}
+ rc = p_slot->hpc_ops->check_cmd_status(ctrl);
+ if (rc) {
+ err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__, rc);
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
+ return rc;
+ }
+
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
+
return(rc);
}
if (p_slot->is_a_board)
p_slot->status = 0x01;
+ /* Wait for exclusive access to hardware */
+ down(&ctrl->crit_sect);
+
/* turn off slot, turn on Amber LED, turn off Green LED */
rc = p_slot->hpc_ops->slot_disable(p_slot);
if (rc) {
err("%s: Issue of Slot Disable command failed\n", __FUNCTION__);
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
return rc;
}
+
+ rc = p_slot->hpc_ops->check_cmd_status(ctrl);
+ if (rc) {
+ err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__, rc);
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
+ return rc;
+ }
rc = p_slot->hpc_ops->set_attention_status(p_slot, 0);
if (rc) {
err("%s: Issue of Set Attention command failed\n", __FUNCTION__);
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
return rc;
}
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
+
p_slot->pwr_save = 0;
p_slot->is_a_board = 0;
}
-struct pushbutton_work_info {
- struct slot *p_slot;
- struct work_struct work;
-};
+static void pushbutton_helper_thread (unsigned long data)
+{
+ pushbutton_pending = data;
+
+ up(&event_semaphore);
+}
+
/**
* shpchp_pushbutton_thread
* Handles all pending events and exits.
*
*/
-static void shpchp_pushbutton_thread(void *data)
+static void shpchp_pushbutton_thread (unsigned long slot)
{
- struct pushbutton_work_info *info = data;
- struct slot *p_slot = info->p_slot;
+ struct slot *p_slot = (struct slot *) slot;
+ u8 getstatus;
+
+ pushbutton_pending = 0;
+
+ if (!p_slot) {
+ dbg("%s: Error! slot NULL\n", __FUNCTION__);
+ return;
+ }
+
+ p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
+ if (getstatus) {
+ p_slot->state = POWEROFF_STATE;
- mutex_lock(&p_slot->lock);
- switch (p_slot->state) {
- case POWEROFF_STATE:
- mutex_unlock(&p_slot->lock);
shpchp_disable_slot(p_slot);
- mutex_lock(&p_slot->lock);
p_slot->state = STATIC_STATE;
- break;
- case POWERON_STATE:
- mutex_unlock(&p_slot->lock);
- if (shpchp_enable_slot(p_slot))
+ } else {
+ p_slot->state = POWERON_STATE;
+
+ if (shpchp_enable_slot(p_slot)) {
+ /* Wait for exclusive access to hardware */
+ down(&p_slot->ctrl->crit_sect);
+
p_slot->hpc_ops->green_led_off(p_slot);
- mutex_lock(&p_slot->lock);
+
+ /* Done with exclusive hardware access */
+ up(&p_slot->ctrl->crit_sect);
+ }
p_slot->state = STATIC_STATE;
- break;
- default:
- break;
}
- mutex_unlock(&p_slot->lock);
- kfree(info);
+ return;
}
-void queue_pushbutton_work(void *data)
-{
- struct slot *p_slot = data;
- struct pushbutton_work_info *info;
- info = kmalloc(sizeof(*info), GFP_KERNEL);
- if (!info) {
- err("%s: Cannot allocate memory\n", __FUNCTION__);
- return;
+/* this is the main worker thread */
+static int event_thread(void* data)
+{
+ struct controller *ctrl;
+ lock_kernel();
+ daemonize("shpchpd_event");
+ unlock_kernel();
+
+ while (1) {
+ dbg("!!!!event_thread sleeping\n");
+ down_interruptible (&event_semaphore);
+ dbg("event_thread woken finished = %d\n", event_finished);
+ if (event_finished || signal_pending(current))
+ break;
+ /* Do stuff here */
+ if (pushbutton_pending)
+ shpchp_pushbutton_thread(pushbutton_pending);
+ else
+ for (ctrl = shpchp_ctrl_list; ctrl; ctrl=ctrl->next)
+ interrupt_event_handler(ctrl);
}
- info->p_slot = p_slot;
- INIT_WORK(&info->work, shpchp_pushbutton_thread, info);
+ dbg("event_thread signals exit\n");
+ up(&event_exit);
+ return 0;
+}
- mutex_lock(&p_slot->lock);
- switch (p_slot->state) {
- case BLINKINGOFF_STATE:
- p_slot->state = POWEROFF_STATE;
- break;
- case BLINKINGON_STATE:
- p_slot->state = POWERON_STATE;
- break;
- default:
- goto out;
+int shpchp_event_start_thread (void)
+{
+ int pid;
+
+ /* initialize our semaphores */
+ init_MUTEX_LOCKED(&event_exit);
+ event_finished=0;
+
+ init_MUTEX_LOCKED(&event_semaphore);
+ pid = kernel_thread(event_thread, NULL, 0);
+
+ if (pid < 0) {
+ err ("Can't start up our event thread\n");
+ return -1;
}
- queue_work(shpchp_wq, &info->work);
- out:
- mutex_unlock(&p_slot->lock);
+ return 0;
+}
+
+
+void shpchp_event_stop_thread (void)
+{
+ event_finished = 1;
+ up(&event_semaphore);
+ down(&event_exit);
}
+
static int update_slot_info (struct slot *slot)
{
struct hotplug_slot_info *info;
return result;
}
-/*
- * Note: This function must be called with slot->lock held
- */
-static void handle_button_press_event(struct slot *p_slot)
+static void interrupt_event_handler(struct controller *ctrl)
{
+ int loop = 0;
+ int change = 1;
+ u8 hp_slot;
u8 getstatus;
+ struct slot *p_slot;
- switch (p_slot->state) {
- case STATIC_STATE:
- p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
- if (getstatus) {
- p_slot->state = BLINKINGOFF_STATE;
- info(msg_button_off, p_slot->name);
- } else {
- p_slot->state = BLINKINGON_STATE;
- info(msg_button_on, p_slot->name);
- }
- /* blink green LED and turn off amber */
- p_slot->hpc_ops->green_led_blink(p_slot);
- p_slot->hpc_ops->set_attention_status(p_slot, 0);
-
- schedule_delayed_work(&p_slot->work, 5*HZ);
- break;
- case BLINKINGOFF_STATE:
- case BLINKINGON_STATE:
- /*
- * Cancel if we are still blinking; this means that we
- * press the attention again before the 5 sec. limit
- * expires to cancel hot-add or hot-remove
- */
- info("Button cancel on Slot(%s)\n", p_slot->name);
- dbg("%s: button cancel\n", __FUNCTION__);
- cancel_delayed_work(&p_slot->work);
- if (p_slot->state == BLINKINGOFF_STATE)
- p_slot->hpc_ops->green_led_on(p_slot);
- else
- p_slot->hpc_ops->green_led_off(p_slot);
- p_slot->hpc_ops->set_attention_status(p_slot, 0);
- info(msg_button_cancel, p_slot->name);
- p_slot->state = STATIC_STATE;
- break;
- case POWEROFF_STATE:
- case POWERON_STATE:
- /*
- * Ignore if the slot is on power-on or power-off state;
- * this means that the previous attention button action
- * to hot-add or hot-remove is undergoing
- */
- info("Button ignore on Slot(%s)\n", p_slot->name);
- update_slot_info(p_slot);
- break;
- default:
- warn("Not a valid state\n");
- break;
- }
-}
-
-static void interrupt_event_handler(void *data)
-{
- struct event_info *info = data;
- struct slot *p_slot = info->p_slot;
-
- mutex_lock(&p_slot->lock);
- switch (info->event_type) {
- case INT_BUTTON_PRESS:
- handle_button_press_event(p_slot);
- break;
- case INT_POWER_FAULT:
- dbg("%s: power fault\n", __FUNCTION__);
- p_slot->hpc_ops->set_attention_status(p_slot, 1);
- p_slot->hpc_ops->green_led_off(p_slot);
- break;
- default:
- update_slot_info(p_slot);
- break;
+ while (change) {
+ change = 0;
+
+ for (loop = 0; loop < 10; loop++) {
+ if (ctrl->event_queue[loop].event_type != 0) {
+ dbg("%s:loop %x event_type %x\n", __FUNCTION__, loop,
+ ctrl->event_queue[loop].event_type);
+ hp_slot = ctrl->event_queue[loop].hp_slot;
+
+ p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
+
+ if (ctrl->event_queue[loop].event_type == INT_BUTTON_CANCEL) {
+ dbg("%s: button cancel\n", __FUNCTION__);
+ del_timer(&p_slot->task_event);
+
+ switch (p_slot->state) {
+ case BLINKINGOFF_STATE:
+ /* Wait for exclusive access to hardware */
+ down(&ctrl->crit_sect);
+
+ p_slot->hpc_ops->green_led_on(p_slot);
+
+ p_slot->hpc_ops->set_attention_status(p_slot, 0);
+
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
+ break;
+ case BLINKINGON_STATE:
+ /* Wait for exclusive access to hardware */
+ down(&ctrl->crit_sect);
+
+ p_slot->hpc_ops->green_led_off(p_slot);
+
+ p_slot->hpc_ops->set_attention_status(p_slot, 0);
+
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
+
+ break;
+ default:
+ warn("Not a valid state\n");
+ return;
+ }
+ info(msg_button_cancel, p_slot->number);
+ p_slot->state = STATIC_STATE;
+ } else if (ctrl->event_queue[loop].event_type == INT_BUTTON_PRESS) {
+ /* Button Pressed (No action on 1st press...) */
+ dbg("%s: Button pressed\n", __FUNCTION__);
+
+ p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
+ if (getstatus) {
+ /* slot is on */
+ dbg("%s: slot is on\n", __FUNCTION__);
+ p_slot->state = BLINKINGOFF_STATE;
+ info(msg_button_off, p_slot->number);
+ } else {
+ /* slot is off */
+ dbg("%s: slot is off\n", __FUNCTION__);
+ p_slot->state = BLINKINGON_STATE;
+ info(msg_button_on, p_slot->number);
+ }
+
+ /* Wait for exclusive access to hardware */
+ down(&ctrl->crit_sect);
+
+ /* blink green LED and turn off amber */
+ p_slot->hpc_ops->green_led_blink(p_slot);
+
+ p_slot->hpc_ops->set_attention_status(p_slot, 0);
+
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
+
+ init_timer(&p_slot->task_event);
+ p_slot->task_event.expires = jiffies + 5 * HZ; /* 5 second delay */
+ p_slot->task_event.function = (void (*)(unsigned long)) pushbutton_helper_thread;
+ p_slot->task_event.data = (unsigned long) p_slot;
+
+ dbg("%s: add_timer p_slot = %p\n", __FUNCTION__,(void *) p_slot);
+ add_timer(&p_slot->task_event);
+ } else if (ctrl->event_queue[loop].event_type == INT_POWER_FAULT) {
+ /***********POWER FAULT********************/
+ dbg("%s: power fault\n", __FUNCTION__);
+ /* Wait for exclusive access to hardware */
+ down(&ctrl->crit_sect);
+
+ p_slot->hpc_ops->set_attention_status(p_slot, 1);
+
+ p_slot->hpc_ops->green_led_off(p_slot);
+
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
+ } else {
+ /* refresh notification */
+ if (p_slot)
+ update_slot_info(p_slot);
+ }
+
+ ctrl->event_queue[loop].event_type = 0;
+
+ change = 1;
+ }
+ } /* End of FOR loop */
}
- mutex_unlock(&p_slot->lock);
- kfree(info);
+ return;
}
-static int shpchp_enable_slot (struct slot *p_slot)
+int shpchp_enable_slot (struct slot *p_slot)
{
u8 getstatus = 0;
- int rc, retval = -ENODEV;
+ int rc;
/* Check to see if (latch closed, card present, power off) */
- mutex_lock(&p_slot->ctrl->crit_sect);
+ down(&p_slot->ctrl->crit_sect);
rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
if (rc || !getstatus) {
- info("No adapter on slot(%s)\n", p_slot->name);
- goto out;
+ info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number);
+ up(&p_slot->ctrl->crit_sect);
+ return -ENODEV;
}
rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
if (rc || getstatus) {
- info("Latch open on slot(%s)\n", p_slot->name);
- goto out;
+ info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number);
+ up(&p_slot->ctrl->crit_sect);
+ return -ENODEV;
}
rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
if (rc || getstatus) {
- info("Already enabled on slot(%s)\n", p_slot->name);
- goto out;
+ info("%s: already enabled on slot(%x)\n", __FUNCTION__, p_slot->number);
+ up(&p_slot->ctrl->crit_sect);
+ return -ENODEV;
}
+ up(&p_slot->ctrl->crit_sect);
p_slot->is_a_board = 1;
&& p_slot->ctrl->num_slots == 1) {
/* handle amd pogo errata; this must be done before enable */
amd_pogo_errata_save_misc_reg(p_slot);
- retval = board_added(p_slot);
+ rc = board_added(p_slot);
/* handle amd pogo errata; this must be done after enable */
amd_pogo_errata_restore_misc_reg(p_slot);
} else
- retval = board_added(p_slot);
+ rc = board_added(p_slot);
- if (retval) {
+ if (rc) {
p_slot->hpc_ops->get_adapter_status(p_slot,
&(p_slot->presence_save));
p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
}
update_slot_info(p_slot);
- out:
- mutex_unlock(&p_slot->ctrl->crit_sect);
- return retval;
+ return rc;
}
-static int shpchp_disable_slot (struct slot *p_slot)
+int shpchp_disable_slot (struct slot *p_slot)
{
u8 getstatus = 0;
- int rc, retval = -ENODEV;
+ int ret = 0;
if (!p_slot->ctrl)
return -ENODEV;
/* Check to see if (latch closed, card present, power on) */
- mutex_lock(&p_slot->ctrl->crit_sect);
+ down(&p_slot->ctrl->crit_sect);
- rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
- if (rc || !getstatus) {
- info("No adapter on slot(%s)\n", p_slot->name);
- goto out;
+ ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
+ if (ret || !getstatus) {
+ info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number);
+ up(&p_slot->ctrl->crit_sect);
+ return -ENODEV;
}
- rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
- if (rc || getstatus) {
- info("Latch open on slot(%s)\n", p_slot->name);
- goto out;
+ ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
+ if (ret || getstatus) {
+ info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number);
+ up(&p_slot->ctrl->crit_sect);
+ return -ENODEV;
}
- rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
- if (rc || !getstatus) {
- info("Already disabled slot(%s)\n", p_slot->name);
- goto out;
+ ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
+ if (ret || !getstatus) {
+ info("%s: already disabled slot(%x)\n", __FUNCTION__, p_slot->number);
+ up(&p_slot->ctrl->crit_sect);
+ return -ENODEV;
}
+ up(&p_slot->ctrl->crit_sect);
- retval = remove_board(p_slot);
+ ret = remove_board(p_slot);
update_slot_info(p_slot);
- out:
- mutex_unlock(&p_slot->ctrl->crit_sect);
- return retval;
-}
-
-int shpchp_sysfs_enable_slot(struct slot *p_slot)
-{
- int retval = -ENODEV;
-
- mutex_lock(&p_slot->lock);
- switch (p_slot->state) {
- case BLINKINGON_STATE:
- cancel_delayed_work(&p_slot->work);
- case STATIC_STATE:
- p_slot->state = POWERON_STATE;
- mutex_unlock(&p_slot->lock);
- retval = shpchp_enable_slot(p_slot);
- mutex_lock(&p_slot->lock);
- p_slot->state = STATIC_STATE;
- break;
- case POWERON_STATE:
- info("Slot %s is already in powering on state\n",
- p_slot->name);
- break;
- case BLINKINGOFF_STATE:
- case POWEROFF_STATE:
- info("Already enabled on slot %s\n", p_slot->name);
- break;
- default:
- err("Not a valid state on slot %s\n", p_slot->name);
- break;
- }
- mutex_unlock(&p_slot->lock);
-
- return retval;
+ return ret;
}
-int shpchp_sysfs_disable_slot(struct slot *p_slot)
-{
- int retval = -ENODEV;
-
- mutex_lock(&p_slot->lock);
- switch (p_slot->state) {
- case BLINKINGOFF_STATE:
- cancel_delayed_work(&p_slot->work);
- case STATIC_STATE:
- p_slot->state = POWEROFF_STATE;
- mutex_unlock(&p_slot->lock);
- retval = shpchp_disable_slot(p_slot);
- mutex_lock(&p_slot->lock);
- p_slot->state = STATIC_STATE;
- break;
- case POWEROFF_STATE:
- info("Slot %s is already in powering off state\n",
- p_slot->name);
- break;
- case BLINKINGON_STATE:
- case POWERON_STATE:
- info("Already disabled on slot %s\n", p_slot->name);
- break;
- default:
- err("Not a valid state on slot %s\n", p_slot->name);
- break;
- }
- mutex_unlock(&p_slot->lock);
-
- return retval;
-}
git://git.onelab.eu / linux-2.6.git / blobdiff