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path: root/drivers/pci/hotplug/cpqphp_ctrl.c
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Diffstat (limited to 'drivers/pci/hotplug/cpqphp_ctrl.c')
-rw-r--r--drivers/pci/hotplug/cpqphp_ctrl.c131
1 files changed, 77 insertions, 54 deletions
diff --git a/drivers/pci/hotplug/cpqphp_ctrl.c b/drivers/pci/hotplug/cpqphp_ctrl.c
index ec3a765..b02b8dd 100644
--- a/drivers/pci/hotplug/cpqphp_ctrl.c
+++ b/drivers/pci/hotplug/cpqphp_ctrl.c
@@ -81,14 +81,15 @@ static u8 handle_switch_change(u8 change, struct controller * ctrl)
for (hp_slot = 0; hp_slot < 6; hp_slot++) {
if (change & (0x1L << hp_slot)) {
- /**********************************
+ /*
* this one changed.
- **********************************/
+ */
func = cpqhp_slot_find(ctrl->bus,
(hp_slot + ctrl->slot_device_offset), 0);
/* this is the structure that tells the worker thread
- *what to do */
+ * what to do
+ */
taskInfo = &(ctrl->event_queue[ctrl->next_event]);
ctrl->next_event = (ctrl->next_event + 1) % 10;
taskInfo->hp_slot = hp_slot;
@@ -100,17 +101,17 @@ static u8 handle_switch_change(u8 change, struct controller * ctrl)
func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02;
if (ctrl->ctrl_int_comp & (0x1L << hp_slot)) {
- /**********************************
+ /*
* Switch opened
- **********************************/
+ */
func->switch_save = 0;
taskInfo->event_type = INT_SWITCH_OPEN;
} else {
- /**********************************
+ /*
* Switch closed
- **********************************/
+ */
func->switch_save = 0x10;
@@ -152,17 +153,17 @@ static u8 handle_presence_change(u16 change, struct controller * ctrl)
if (!change)
return 0;
- /**********************************
+ /*
* Presence Change
- **********************************/
+ */
dbg("cpqsbd: Presence/Notify input change.\n");
dbg(" Changed bits are 0x%4.4x\n", change );
for (hp_slot = 0; hp_slot < 6; hp_slot++) {
if (change & (0x0101 << hp_slot)) {
- /**********************************
+ /*
* this one changed.
- **********************************/
+ */
func = cpqhp_slot_find(ctrl->bus,
(hp_slot + ctrl->slot_device_offset), 0);
@@ -177,22 +178,23 @@ static u8 handle_presence_change(u16 change, struct controller * ctrl)
return 0;
/* If the switch closed, must be a button
- * If not in button mode, nevermind */
+ * If not in button mode, nevermind
+ */
if (func->switch_save && (ctrl->push_button == 1)) {
temp_word = ctrl->ctrl_int_comp >> 16;
temp_byte = (temp_word >> hp_slot) & 0x01;
temp_byte |= (temp_word >> (hp_slot + 7)) & 0x02;
if (temp_byte != func->presence_save) {
- /**************************************
+ /*
* button Pressed (doesn't do anything)
- **************************************/
+ */
dbg("hp_slot %d button pressed\n", hp_slot);
taskInfo->event_type = INT_BUTTON_PRESS;
} else {
- /**********************************
+ /*
* button Released - TAKE ACTION!!!!
- **********************************/
+ */
dbg("hp_slot %d button released\n", hp_slot);
taskInfo->event_type = INT_BUTTON_RELEASE;
@@ -210,7 +212,8 @@ static u8 handle_presence_change(u16 change, struct controller * ctrl)
}
} else {
/* Switch is open, assume a presence change
- * Save the presence state */
+ * Save the presence state
+ */
temp_word = ctrl->ctrl_int_comp >> 16;
func->presence_save = (temp_word >> hp_slot) & 0x01;
func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02;
@@ -241,17 +244,17 @@ static u8 handle_power_fault(u8 change, struct controller * ctrl)
if (!change)
return 0;
- /**********************************
+ /*
* power fault
- **********************************/
+ */
info("power fault interrupt\n");
for (hp_slot = 0; hp_slot < 6; hp_slot++) {
if (change & (0x01 << hp_slot)) {
- /**********************************
+ /*
* this one changed.
- **********************************/
+ */
func = cpqhp_slot_find(ctrl->bus,
(hp_slot + ctrl->slot_device_offset), 0);
@@ -262,16 +265,16 @@ static u8 handle_power_fault(u8 change, struct controller * ctrl)
rc++;
if (ctrl->ctrl_int_comp & (0x00000100 << hp_slot)) {
- /**********************************
+ /*
* power fault Cleared
- **********************************/
+ */
func->status = 0x00;
taskInfo->event_type = INT_POWER_FAULT_CLEAR;
} else {
- /**********************************
+ /*
* power fault
- **********************************/
+ */
taskInfo->event_type = INT_POWER_FAULT;
if (ctrl->rev < 4) {
@@ -432,13 +435,15 @@ static struct pci_resource *do_pre_bridge_resource_split(struct pci_resource **h
/* If we got here, there the bridge requires some of the resource, but
- * we may be able to split some off of the front */
+ * we may be able to split some off of the front
+ */
node = *head;
if (node->length & (alignment -1)) {
/* this one isn't an aligned length, so we'll make a new entry
- * and split it up. */
+ * and split it up.
+ */
split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
if (!split_node)
@@ -556,7 +561,8 @@ static struct pci_resource *get_io_resource(struct pci_resource **head, u32 size
if (node->base & (size - 1)) {
/* this one isn't base aligned properly
- * so we'll make a new entry and split it up */
+ * so we'll make a new entry and split it up
+ */
temp_dword = (node->base | (size-1)) + 1;
/* Short circuit if adjusted size is too small */
@@ -581,7 +587,8 @@ static struct pci_resource *get_io_resource(struct pci_resource **head, u32 size
/* Don't need to check if too small since we already did */
if (node->length > size) {
/* this one is longer than we need
- * so we'll make a new entry and split it up */
+ * so we'll make a new entry and split it up
+ */
split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
if (!split_node)
@@ -601,7 +608,8 @@ static struct pci_resource *get_io_resource(struct pci_resource **head, u32 size
continue;
/* If we got here, then it is the right size
- * Now take it out of the list and break */
+ * Now take it out of the list and break
+ */
if (*head == node) {
*head = node->next;
} else {
@@ -643,13 +651,15 @@ static struct pci_resource *get_max_resource(struct pci_resource **head, u32 siz
for (max = *head; max; max = max->next) {
/* If not big enough we could probably just bail,
- * instead we'll continue to the next. */
+ * instead we'll continue to the next.
+ */
if (max->length < size)
continue;
if (max->base & (size - 1)) {
/* this one isn't base aligned properly
- * so we'll make a new entry and split it up */
+ * so we'll make a new entry and split it up
+ */
temp_dword = (max->base | (size-1)) + 1;
/* Short circuit if adjusted size is too small */
@@ -672,7 +682,8 @@ static struct pci_resource *get_max_resource(struct pci_resource **head, u32 siz
if ((max->base + max->length) & (size - 1)) {
/* this one isn't end aligned properly at the top
- * so we'll make a new entry and split it up */
+ * so we'll make a new entry and split it up
+ */
split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
if (!split_node)
@@ -744,7 +755,8 @@ static struct pci_resource *get_resource(struct pci_resource **head, u32 size)
if (node->base & (size - 1)) {
dbg("%s: not aligned\n", __func__);
/* this one isn't base aligned properly
- * so we'll make a new entry and split it up */
+ * so we'll make a new entry and split it up
+ */
temp_dword = (node->base | (size-1)) + 1;
/* Short circuit if adjusted size is too small */
@@ -769,7 +781,8 @@ static struct pci_resource *get_resource(struct pci_resource **head, u32 size)
if (node->length > size) {
dbg("%s: too big\n", __func__);
/* this one is longer than we need
- * so we'll make a new entry and split it up */
+ * so we'll make a new entry and split it up
+ */
split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
if (!split_node)
@@ -888,17 +901,17 @@ irqreturn_t cpqhp_ctrl_intr(int IRQ, void *data)
misc = readw(ctrl->hpc_reg + MISC);
- /***************************************
+ /*
* Check to see if it was our interrupt
- ***************************************/
+ */
if (!(misc & 0x000C)) {
return IRQ_NONE;
}
if (misc & 0x0004) {
- /**********************************
+ /*
* Serial Output interrupt Pending
- **********************************/
+ */
/* Clear the interrupt */
misc |= 0x0004;
@@ -963,7 +976,8 @@ struct pci_func *cpqhp_slot_create(u8 busnumber)
new_slot = kzalloc(sizeof(*new_slot), GFP_KERNEL);
if (new_slot == NULL) {
/* I'm not dead yet!
- * You will be. */
+ * You will be.
+ */
return new_slot;
}
@@ -1135,7 +1149,8 @@ static u8 set_controller_speed(struct controller *ctrl, u8 adapter_speed, u8 hp_
return 0;
/* We don't allow freq/mode changes if we find another adapter running
- * in another slot on this controller */
+ * in another slot on this controller
+ */
for(slot = ctrl->slot; slot; slot = slot->next) {
if (slot->device == (hp_slot + ctrl->slot_device_offset))
continue;
@@ -1145,7 +1160,8 @@ static u8 set_controller_speed(struct controller *ctrl, u8 adapter_speed, u8 hp_
continue;
/* If another adapter is running on the same segment but at a
* lower speed/mode, we allow the new adapter to function at
- * this rate if supported */
+ * this rate if supported
+ */
if (ctrl->speed < adapter_speed)
return 0;
@@ -1153,7 +1169,8 @@ static u8 set_controller_speed(struct controller *ctrl, u8 adapter_speed, u8 hp_
}
/* If the controller doesn't support freq/mode changes and the
- * controller is running at a higher mode, we bail */
+ * controller is running at a higher mode, we bail
+ */
if ((ctrl->speed > adapter_speed) && (!ctrl->pcix_speed_capability))
return 1;
@@ -1162,7 +1179,8 @@ static u8 set_controller_speed(struct controller *ctrl, u8 adapter_speed, u8 hp_
return 0;
/* We try to set the max speed supported by both the adapter and
- * controller */
+ * controller
+ */
if (ctrl->speed_capability < adapter_speed) {
if (ctrl->speed == ctrl->speed_capability)
return 0;
@@ -1244,7 +1262,7 @@ static u8 set_controller_speed(struct controller *ctrl, u8 adapter_speed, u8 hp_
}
/* the following routines constitute the bulk of the
- hotplug controller logic
+ * hotplug controller logic
*/
@@ -1269,14 +1287,14 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
hp_slot = func->device - ctrl->slot_device_offset;
if (readl(ctrl->hpc_reg + INT_INPUT_CLEAR) & (0x01L << hp_slot)) {
- /**********************************
+ /*
* The switch is open.
- **********************************/
+ */
rc = INTERLOCK_OPEN;
} else if (is_slot_enabled (ctrl, hp_slot)) {
- /**********************************
+ /*
* The board is already on
- **********************************/
+ */
rc = CARD_FUNCTIONING;
} else {
mutex_lock(&ctrl->crit_sect);
@@ -1352,7 +1370,8 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
* Get slot won't work for devices behind
* bridges, but in this case it will always be
* called for the "base" bus/dev/func of an
- * adapter. */
+ * adapter.
+ */
mutex_lock(&ctrl->crit_sect);
@@ -1377,7 +1396,8 @@ static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
* Get slot won't work for devices behind bridges, but
* in this case it will always be called for the "base"
- * bus/dev/func of an adapter. */
+ * bus/dev/func of an adapter.
+ */
mutex_lock(&ctrl->crit_sect);
@@ -1434,7 +1454,8 @@ static u32 board_added(struct pci_func *func, struct controller *ctrl)
wait_for_ctrl_irq (ctrl);
/* Change bits in slot power register to force another shift out
- * NOTE: this is to work around the timer bug */
+ * NOTE: this is to work around the timer bug
+ */
temp_byte = readb(ctrl->hpc_reg + SLOT_POWER);
writeb(0x00, ctrl->hpc_reg + SLOT_POWER);
writeb(temp_byte, ctrl->hpc_reg + SLOT_POWER);
@@ -2484,7 +2505,8 @@ static int configure_new_function(struct controller *ctrl, struct pci_func *func
temp_resources.irqs = &irqs;
/* Make copies of the nodes we are going to pass down so that
- * if there is a problem,we can just use these to free resources */
+ * if there is a problem,we can just use these to free resources
+ */
hold_bus_node = kmalloc(sizeof(*hold_bus_node), GFP_KERNEL);
hold_IO_node = kmalloc(sizeof(*hold_IO_node), GFP_KERNEL);
hold_mem_node = kmalloc(sizeof(*hold_mem_node), GFP_KERNEL);
@@ -2556,7 +2578,8 @@ static int configure_new_function(struct controller *ctrl, struct pci_func *func
temp_word = (p_mem_node->base + p_mem_node->length - 1) >> 16;
rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
- /* Adjust this to compensate for extra adjustment in first loop */
+ /* Adjust this to compensate for extra adjustment in first loop
+ */
irqs.barber_pole--;
rc = 0;
generated by cgit v0.10.2 at 2024-11-14 13:27:40 (GMT)