#include <linux/pci.h>
#include "cpqphp.h"
-static u32 configure_new_device(struct controller* ctrl, struct pci_func *func,u8 behind_bridge, struct resource_lists *resources);
-static int configure_new_function(struct controller* ctrl, struct pci_func *func,u8 behind_bridge, struct resource_lists *resources);
+static u32 configure_new_device(struct controller* ctrl, struct pci_func *func,
+ u8 behind_bridge, struct resource_lists *resources);
+static int configure_new_function(struct controller* ctrl, struct pci_func *func,
+ u8 behind_bridge, struct resource_lists *resources);
static void interrupt_event_handler(struct controller *ctrl);
static struct semaphore event_semaphore; /* mutex for process loop (up if something to process) */
static wait_queue_head_t delay_wait;
/* delay is in jiffies to wait for */
-static void long_delay (int delay)
+static void long_delay(int delay)
{
DECLARE_WAITQUEUE(wait, current);
*/
down (&delay_sem);
- init_waitqueue_head (&delay_wait);
+ init_waitqueue_head(&delay_wait);
add_wait_queue(&delay_wait, &wait);
set_current_state(TASK_INTERRUPTIBLE);
remove_wait_queue(&delay_wait, &wait);
set_current_state(TASK_RUNNING);
- up (&delay_sem);
+ up(&delay_sem);
}
-//FIXME: The following line needs to be somewhere else...
+/* FIXME: The following line needs to be somewhere else... */
#define WRONG_BUS_FREQUENCY 0x07
static u8 handle_switch_change(u8 change, struct controller * ctrl)
{
if (!change)
return 0;
- // Switch Change
+ /* Switch Change */
dbg("cpqsbd: Switch interrupt received.\n");
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
+ /**********************************
+ * 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 */
taskInfo = &(ctrl->event_queue[ctrl->next_event]);
ctrl->next_event = (ctrl->next_event + 1) % 10;
taskInfo->hp_slot = hp_slot;
func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02;
if (ctrl->ctrl_int_comp & (0x1L << hp_slot)) {
- //*********************************
- // Switch opened
- //*********************************
+ /**********************************
+ * Switch opened
+ **********************************/
func->switch_save = 0;
taskInfo->event_type = INT_SWITCH_OPEN;
} else {
- //*********************************
- // Switch closed
- //*********************************
+ /**********************************
+ * Switch closed
+ **********************************/
func->switch_save = 0x10;
return rc;
}
-
-/*
- * cpqhp_find_slot
+/**
+ * cpqhp_find_slot: find the struct slot of given device
+ * @ctrl: scan lots of this controller
+ * @device: the device id to find
*/
-struct slot *cpqhp_find_slot (struct controller * ctrl, u8 device)
+static struct slot *cpqhp_find_slot(struct controller *ctrl, u8 device)
{
- struct slot *slot;
-
- if (!ctrl)
- return NULL;
-
- slot = ctrl->slot;
+ struct slot *slot = ctrl->slot;
while (slot && (slot->device != device)) {
slot = slot->next;
if (!change)
return 0;
- //*********************************
- // Presence Change
- //*********************************
+ /**********************************
+ * 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);
+ /**********************************
+ * this one changed.
+ **********************************/
+ func = cpqhp_slot_find(ctrl->bus,
+ (hp_slot + ctrl->slot_device_offset), 0);
taskInfo = &(ctrl->event_queue[ctrl->next_event]);
ctrl->next_event = (ctrl->next_event + 1) % 10;
if (!p_slot)
return 0;
- // If the switch closed, must be a button
- // If not in button mode, nevermind
+ /* If the switch closed, must be a button
+ * 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)
- //*********************************
+ /**************************************
+ * 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!!!!
- //*********************************
+ /**********************************
+ * button Released - TAKE ACTION!!!!
+ **********************************/
dbg("hp_slot %d button released\n", hp_slot);
taskInfo->event_type = INT_BUTTON_RELEASE;
- // Cancel if we are still blinking
+ /* Cancel if we are still blinking */
if ((p_slot->state == BLINKINGON_STATE)
|| (p_slot->state == BLINKINGOFF_STATE)) {
taskInfo->event_type = INT_BUTTON_CANCEL;
dbg("hp_slot %d button cancel\n", hp_slot);
} else if ((p_slot->state == POWERON_STATE)
|| (p_slot->state == POWEROFF_STATE)) {
- //info(msg_button_ignore, p_slot->number);
+ /* info(msg_button_ignore, p_slot->number); */
taskInfo->event_type = INT_BUTTON_IGNORE;
dbg("hp_slot %d button ignore\n", hp_slot);
}
}
} else {
- // Switch is open, assume a presence change
- // Save the presence state
+ /* Switch is open, assume a presence change
+ * 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;
if ((!(ctrl->ctrl_int_comp & (0x010000 << hp_slot))) ||
(!(ctrl->ctrl_int_comp & (0x01000000 << hp_slot)))) {
- //*********************************
- // Present
- //*********************************
+ /* Present */
taskInfo->event_type = INT_PRESENCE_ON;
} else {
- //*********************************
- // Not Present
- //*********************************
+ /* Not Present */
taskInfo->event_type = INT_PRESENCE_OFF;
}
}
if (!change)
return 0;
- //*********************************
- // power fault
- //*********************************
+ /**********************************
+ * 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);
+ /**********************************
+ * this one changed.
+ **********************************/
+ func = cpqhp_slot_find(ctrl->bus,
+ (hp_slot + ctrl->slot_device_offset), 0);
taskInfo = &(ctrl->event_queue[ctrl->next_event]);
ctrl->next_event = (ctrl->next_event + 1) % 10;
rc++;
if (ctrl->ctrl_int_comp & (0x00000100 << hp_slot)) {
- //*********************************
- // power fault Cleared
- //*********************************
+ /**********************************
+ * power fault Cleared
+ **********************************/
func->status = 0x00;
taskInfo->event_type = INT_POWER_FAULT_CLEAR;
} else {
- //*********************************
- // power fault
- //*********************************
+ /**********************************
+ * power fault
+ **********************************/
taskInfo->event_type = INT_POWER_FAULT;
if (ctrl->rev < 4) {
green_LED_off (ctrl, hp_slot);
set_SOGO (ctrl);
- // this is a fatal condition, we want to crash the
- // machine to protect from data corruption
- // simulated_NMI shouldn't ever return
- //FIXME
- //simulated_NMI(hp_slot, ctrl);
-
- //The following code causes a software crash just in
- //case simulated_NMI did return
- //FIXME
- //panic(msg_power_fault);
+ /* this is a fatal condition, we want
+ * to crash the machine to protect from
+ * data corruption. simulated_NMI
+ * shouldn't ever return */
+ /* FIXME
+ simulated_NMI(hp_slot, ctrl); */
+
+ /* The following code causes a software
+ * crash just in case simulated_NMI did
+ * return */
+ /*FIXME
+ panic(msg_power_fault); */
} else {
- // set power fault status for this board
+ /* set power fault status for this board */
func->status = 0xFF;
info("power fault bit %x set\n", hp_slot);
}
}
-/*
- * sort_by_size
- *
- * Sorts nodes on the list by their length.
- * Smallest first.
+/**
+ * sort_by_size: sort nodes on the list by their length, smallest first.
+ * @head: list to sort
*
*/
static int sort_by_size(struct pci_resource **head)
int out_of_order = 1;
if (!(*head))
- return(1);
+ return 1;
if (!((*head)->next))
- return(0);
+ return 0;
while (out_of_order) {
out_of_order = 0;
- // Special case for swapping list head
+ /* Special case for swapping list head */
if (((*head)->next) &&
((*head)->length > (*head)->next->length)) {
out_of_order++;
} else
current_res = current_res->next;
}
- } // End of out_of_order loop
+ } /* End of out_of_order loop */
- return(0);
+ return 0;
}
-/*
- * sort_by_max_size
- *
- * Sorts nodes on the list by their length.
- * Largest first.
+/**
+ * sort_by_max_size: sort nodes on the list by their length, largest first.
+ * @head: list to sort
*
*/
static int sort_by_max_size(struct pci_resource **head)
int out_of_order = 1;
if (!(*head))
- return(1);
+ return 1;
if (!((*head)->next))
- return(0);
+ return 0;
while (out_of_order) {
out_of_order = 0;
- // Special case for swapping list head
+ /* Special case for swapping list head */
if (((*head)->next) &&
((*head)->length < (*head)->next->length)) {
out_of_order++;
} else
current_res = current_res->next;
}
- } // End of out_of_order loop
+ } /* End of out_of_order loop */
- return(0);
+ return 0;
}
-/*
- * do_pre_bridge_resource_split
- *
- * Returns zero or one node of resources that aren't in use
+/**
+ * do_pre_bridge_resource_split: find node of resources that are unused
*
*/
-static struct pci_resource *do_pre_bridge_resource_split (struct pci_resource **head, struct pci_resource **orig_head, u32 alignment)
+static struct pci_resource *do_pre_bridge_resource_split(struct pci_resource **head,
+ struct pci_resource **orig_head, u32 alignment)
{
struct pci_resource *prevnode = NULL;
struct pci_resource *node;
dbg("do_pre_bridge_resource_split\n");
if (!(*head) || !(*orig_head))
- return(NULL);
+ return NULL;
rc = cpqhp_resource_sort_and_combine(head);
if (rc)
- return(NULL);
+ return NULL;
if ((*head)->base != (*orig_head)->base)
- return(NULL);
+ return NULL;
if ((*head)->length == (*orig_head)->length)
- return(NULL);
+ return NULL;
- // If we got here, there the bridge requires some of the resource, but
- // we may be able to split some off of the front
+ /* If we got here, there the bridge requires some of the resource, but
+ * 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.
- split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
+ /* this one isn't an aligned length, so we'll make a new entry
+ * and split it up. */
+ split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
if (!split_node)
- return(NULL);
+ return NULL;
temp_dword = (node->length | (alignment-1)) + 1 - alignment;
node->length -= temp_dword;
node->base += split_node->length;
- // Put it in the list
+ /* Put it in the list */
*head = split_node;
split_node->next = node;
}
- if (node->length < alignment) {
- return(NULL);
- }
+ if (node->length < alignment)
+ return NULL;
- // Now unlink it
+ /* Now unlink it */
if (*head == node) {
*head = node->next;
- node->next = NULL;
} else {
prevnode = *head;
while (prevnode->next != node)
prevnode = prevnode->next;
prevnode->next = node->next;
- node->next = NULL;
}
+ node->next = NULL;
- return(node);
+ return node;
}
-/*
- * do_bridge_resource_split
- *
- * Returns zero or one node of resources that aren't in use
+/**
+ * do_bridge_resource_split: find one node of resources that aren't in use
*
*/
-static struct pci_resource *do_bridge_resource_split (struct pci_resource **head, u32 alignment)
+static struct pci_resource *do_bridge_resource_split(struct pci_resource **head, u32 alignment)
{
struct pci_resource *prevnode = NULL;
struct pci_resource *node;
u32 rc;
u32 temp_dword;
- if (!(*head))
- return(NULL);
-
rc = cpqhp_resource_sort_and_combine(head);
if (rc)
- return(NULL);
+ return NULL;
node = *head;
kfree(prevnode);
}
- if (node->length < alignment) {
- kfree(node);
- return(NULL);
- }
+ if (node->length < alignment)
+ goto error;
if (node->base & (alignment - 1)) {
- // Short circuit if adjusted size is too small
+ /* Short circuit if adjusted size is too small */
temp_dword = (node->base | (alignment-1)) + 1;
- if ((node->length - (temp_dword - node->base)) < alignment) {
- kfree(node);
- return(NULL);
- }
+ if ((node->length - (temp_dword - node->base)) < alignment)
+ goto error;
node->length -= (temp_dword - node->base);
node->base = temp_dword;
}
- if (node->length & (alignment - 1)) {
- // There's stuff in use after this node
- kfree(node);
- return(NULL);
- }
+ if (node->length & (alignment - 1))
+ /* There's stuff in use after this node */
+ goto error;
- return(node);
+ return node;
+error:
+ kfree(node);
+ return NULL;
}
-/*
- * get_io_resource
+/**
+ * get_io_resource: find first node of given size not in ISA aliasing window.
+ * @head: list to search
+ * @size: size of node to find, must be a power of two.
*
- * this function sorts the resource list by size and then
- * returns the first node of "size" length that is not in the
- * ISA aliasing window. If it finds a node larger than "size"
- * it will split it up.
+ * Description: this function sorts the resource list by size and then returns
+ * returns the first node of "size" length that is not in the ISA aliasing
+ * window. If it finds a node larger than "size" it will split it up.
*
- * size must be a power of two.
*/
-static struct pci_resource *get_io_resource (struct pci_resource **head, u32 size)
+static struct pci_resource *get_io_resource(struct pci_resource **head, u32 size)
{
struct pci_resource *prevnode;
struct pci_resource *node;
u32 temp_dword;
if (!(*head))
- return(NULL);
+ return NULL;
if ( cpqhp_resource_sort_and_combine(head) )
- return(NULL);
+ return NULL;
if ( sort_by_size(head) )
- return(NULL);
+ return NULL;
for (node = *head; node; node = node->next) {
if (node->length < size)
continue;
if (node->base & (size - 1)) {
- // this one isn't base aligned properly
- // so we'll make a new entry and split it up
+ /* this one isn't base aligned properly
+ * 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
+ /* Short circuit if adjusted size is too small */
if ((node->length - (temp_dword - node->base)) < size)
continue;
- split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
+ split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
if (!split_node)
- return(NULL);
+ return NULL;
split_node->base = node->base;
split_node->length = temp_dword - node->base;
node->base = temp_dword;
node->length -= split_node->length;
- // Put it in the list
+ /* Put it in the list */
split_node->next = node->next;
node->next = split_node;
- } // End of non-aligned base
+ } /* End of non-aligned base */
- // Don't need to check if too small since we already did
+ /* 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
- split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
+ /* this one is longer than we need
+ * so we'll make a new entry and split it up */
+ split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
if (!split_node)
- return(NULL);
+ return NULL;
split_node->base = node->base + size;
split_node->length = node->length - size;
node->length = size;
- // Put it in the list
+ /* Put it in the list */
split_node->next = node->next;
node->next = split_node;
- } // End of too big on top end
+ } /* End of too big on top end */
- // For IO make sure it's not in the ISA aliasing space
+ /* For IO make sure it's not in the ISA aliasing space */
if (node->base & 0x300L)
continue;
- // If we got here, then it is the right size
- // Now take it out of the list
+ /* If we got here, then it is the right size
+ * Now take it out of the list and break */
if (*head == node) {
*head = node->next;
} else {
prevnode->next = node->next;
}
node->next = NULL;
- // Stop looping
break;
}
- return(node);
+ return node;
}
-/*
- * get_max_resource
+/**
+ * get_max_resource: get largest node which has at least the given size.
+ * @head: the list to search the node in
+ * @size: the minimum size of the node to find
*
- * Gets the largest node that is at least "size" big from the
+ * Description: Gets the largest node that is at least "size" big from the
* list pointed to by head. It aligns the node on top and bottom
* to "size" alignment before returning it.
*/
-static struct pci_resource *get_max_resource (struct pci_resource **head, u32 size)
+static struct pci_resource *get_max_resource(struct pci_resource **head, u32 size)
{
struct pci_resource *max;
struct pci_resource *temp;
struct pci_resource *split_node;
u32 temp_dword;
- if (!(*head))
- return(NULL);
-
if (cpqhp_resource_sort_and_combine(head))
- return(NULL);
+ return NULL;
if (sort_by_max_size(head))
- return(NULL);
-
- for (max = *head;max; max = max->next) {
+ return NULL;
- // If not big enough we could probably just bail,
- // instead we'll continue to the next.
+ for (max = *head; max; max = max->next) {
+ /* If not big enough we could probably just bail,
+ * 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
+ /* this one isn't base aligned properly
+ * 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
+ /* Short circuit if adjusted size is too small */
if ((max->length - (temp_dword - max->base)) < size)
continue;
- split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
+ split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
if (!split_node)
- return(NULL);
+ return NULL;
split_node->base = max->base;
split_node->length = temp_dword - max->base;
max->base = temp_dword;
max->length -= split_node->length;
- // Put it next in the list
split_node->next = max->next;
max->next = split_node;
}
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
- split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
+ /* this one isn't end aligned properly at the top
+ * so we'll make a new entry and split it up */
+ split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
if (!split_node)
- return(NULL);
+ return NULL;
temp_dword = ((max->base + max->length) & ~(size - 1));
split_node->base = temp_dword;
split_node->length = max->length + max->base
- split_node->base;
max->length -= split_node->length;
- // Put it in the list
split_node->next = max->next;
max->next = split_node;
}
- // Make sure it didn't shrink too much when we aligned it
+ /* Make sure it didn't shrink too much when we aligned it */
if (max->length < size)
continue;
- // Now take it out of the list
- temp = (struct pci_resource*) *head;
+ /* Now take it out of the list */
+ temp = *head;
if (temp == max) {
*head = max->next;
} else {
}
max->next = NULL;
- return(max);
+ break;
}
- // If we get here, we couldn't find one
- return(NULL);
+ return max;
}
-/*
- * get_resource
+/**
+ * get_resource: find resource of given size and split up larger ones.
+ * @head: the list to search for resources
+ * @size: the size limit to use
*
- * this function sorts the resource list by size and then
+ * Description: This function sorts the resource list by size and then
* returns the first node of "size" length. If it finds a node
* larger than "size" it will split it up.
*
* size must be a power of two.
*/
-static struct pci_resource *get_resource (struct pci_resource **head, u32 size)
+static struct pci_resource *get_resource(struct pci_resource **head, u32 size)
{
struct pci_resource *prevnode;
struct pci_resource *node;
struct pci_resource *split_node;
u32 temp_dword;
- if (!(*head))
- return(NULL);
-
- if ( cpqhp_resource_sort_and_combine(head) )
- return(NULL);
+ if (cpqhp_resource_sort_and_combine(head))
+ return NULL;
- if ( sort_by_size(head) )
- return(NULL);
+ if (sort_by_size(head))
+ return NULL;
for (node = *head; node; node = node->next) {
dbg("%s: req_size =%x node=%p, base=%x, length=%x\n",
if (node->base & (size - 1)) {
dbg("%s: not aligned\n", __FUNCTION__);
- // this one isn't base aligned properly
- // so we'll make a new entry and split it up
+ /* this one isn't base aligned properly
+ * 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
+ /* Short circuit if adjusted size is too small */
if ((node->length - (temp_dword - node->base)) < size)
continue;
- split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
+ split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
if (!split_node)
- return(NULL);
+ return NULL;
split_node->base = node->base;
split_node->length = temp_dword - node->base;
node->base = temp_dword;
node->length -= split_node->length;
- // Put it in the list
split_node->next = node->next;
node->next = split_node;
- } // End of non-aligned base
+ } /* End of non-aligned base */
- // Don't need to check if too small since we already did
+ /* Don't need to check if too small since we already did */
if (node->length > size) {
dbg("%s: too big\n", __FUNCTION__);
- // this one is longer than we need
- // so we'll make a new entry and split it up
- split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
+ /* this one is longer than we need
+ * so we'll make a new entry and split it up */
+ split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
if (!split_node)
- return(NULL);
+ return NULL;
split_node->base = node->base + size;
split_node->length = node->length - size;
node->length = size;
- // Put it in the list
+ /* Put it in the list */
split_node->next = node->next;
node->next = split_node;
- } // End of too big on top end
+ } /* End of too big on top end */
dbg("%s: got one!!!\n", __FUNCTION__);
- // If we got here, then it is the right size
- // Now take it out of the list
+ /* If we got here, then it is the right size
+ * Now take it out of the list */
if (*head == node) {
*head = node->next;
} else {
prevnode->next = node->next;
}
node->next = NULL;
- // Stop looping
break;
}
- return(node);
+ return node;
}
-/*
- * cpqhp_resource_sort_and_combine
+/**
+ * cpqhp_resource_sort_and_combine: sort nodes by base addresses and clean up.
+ * @head: the list to sort and clean up
*
- * Sorts all of the nodes in the list in ascending order by
+ * Description: Sorts all of the nodes in the list in ascending order by
* their base addresses. Also does garbage collection by
* combining adjacent nodes.
*
dbg("%s: head = %p, *head = %p\n", __FUNCTION__, head, *head);
if (!(*head))
- return(1);
+ return 1;
dbg("*head->next = %p\n",(*head)->next);
if (!(*head)->next)
- return(0); /* only one item on the list, already sorted! */
+ return 0; /* only one item on the list, already sorted! */
dbg("*head->base = 0x%x\n",(*head)->base);
dbg("*head->next->base = 0x%x\n",(*head)->next->base);
while (out_of_order) {
out_of_order = 0;
- // Special case for swapping list head
+ /* Special case for swapping list head */
if (((*head)->next) &&
((*head)->base > (*head)->next->base)) {
node1 = *head;
} else
node1 = node1->next;
}
- } // End of out_of_order loop
+ } /* End of out_of_order loop */
node1 = *head;
while (node1 && node1->next) {
if ((node1->base + node1->length) == node1->next->base) {
- // Combine
+ /* Combine */
dbg("8..\n");
node1->length += node1->next->length;
node2 = node1->next;
node1 = node1->next;
}
- return(0);
+ return 0;
}
misc = readw(ctrl->hpc_reg + MISC);
- //*********************************
- // Check to see if it was our interrupt
- //*********************************
+ /***************************************
+ * Check to see if it was our interrupt
+ ***************************************/
if (!(misc & 0x000C)) {
return IRQ_NONE;
}
if (misc & 0x0004) {
- //*********************************
- // Serial Output interrupt Pending
- //*********************************
+ /**********************************
+ * Serial Output interrupt Pending
+ **********************************/
- // Clear the interrupt
+ /* Clear the interrupt */
misc |= 0x0004;
writew(misc, ctrl->hpc_reg + MISC);
- // Read to clear posted writes
+ /* Read to clear posted writes */
misc = readw(ctrl->hpc_reg + MISC);
dbg ("%s - waking up\n", __FUNCTION__);
}
if (misc & 0x0008) {
- // General-interrupt-input interrupt Pending
+ /* General-interrupt-input interrupt Pending */
Diff = readl(ctrl->hpc_reg + INT_INPUT_CLEAR) ^ ctrl->ctrl_int_comp;
ctrl->ctrl_int_comp = readl(ctrl->hpc_reg + INT_INPUT_CLEAR);
- // Clear the interrupt
+ /* Clear the interrupt */
writel(Diff, ctrl->hpc_reg + INT_INPUT_CLEAR);
- // Read it back to clear any posted writes
+ /* Read it back to clear any posted writes */
temp_dword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR);
- if (!Diff) {
- // Clear all interrupts
+ if (!Diff)
+ /* Clear all interrupts */
writel(0xFFFFFFFF, ctrl->hpc_reg + INT_INPUT_CLEAR);
- }
schedule_flag += handle_switch_change((u8)(Diff & 0xFFL), ctrl);
schedule_flag += handle_presence_change((u16)((Diff & 0xFFFF0000L) >> 16), ctrl);
struct pci_func *new_slot;
struct pci_func *next;
- new_slot = (struct pci_func *) kmalloc(sizeof(struct pci_func), GFP_KERNEL);
+ new_slot = kmalloc(sizeof(*new_slot), GFP_KERNEL);
if (new_slot == NULL) {
- // I'm not dead yet!
- // You will be.
- return(new_slot);
+ /* I'm not dead yet!
+ * You will be. */
+ return new_slot;
}
memset(new_slot, 0, sizeof(struct pci_func));
next = next->next;
next->next = new_slot;
}
- return(new_slot);
+ return new_slot;
}
-/*
+/**
* slot_remove - Removes a node from the linked list of slots.
* @old_slot: slot to remove
*
struct pci_func *next;
if (old_slot == NULL)
- return(1);
+ return 1;
next = cpqhp_slot_list[old_slot->bus];
if (next == NULL) {
- return(1);
+ return 1;
}
if (next == old_slot) {
cpqhp_slot_list[old_slot->bus] = old_slot->next;
cpqhp_destroy_board_resources(old_slot);
kfree(old_slot);
- return(0);
+ return 0;
}
while ((next->next != old_slot) && (next->next != NULL)) {
next->next = old_slot->next;
cpqhp_destroy_board_resources(old_slot);
kfree(old_slot);
- return(0);
+ return 0;
} else
- return(2);
+ return 2;
}
u8 tempBus;
struct pci_func *next;
- if (bridge == NULL)
- return(1);
-
secondaryBus = (bridge->config_space[0x06] >> 8) & 0xFF;
subordinateBus = (bridge->config_space[0x06] >> 16) & 0xFF;
next = cpqhp_slot_list[bridge->bus];
- if (next == NULL) {
- return(1);
- }
+ if (next == NULL)
+ return 1;
if (next == bridge) {
cpqhp_slot_list[bridge->bus] = bridge->next;
- kfree(bridge);
- return(0);
+ goto out;
}
- while ((next->next != bridge) && (next->next != NULL)) {
+ while ((next->next != bridge) && (next->next != NULL))
next = next->next;
- }
- if (next->next == bridge) {
- next->next = bridge->next;
- kfree(bridge);
- return(0);
- } else
- return(2);
+ if (next->next != bridge)
+ return 2;
+ next->next = bridge->next;
+out:
+ kfree(bridge);
+ return 0;
}
func = cpqhp_slot_list[bus];
if ((func == NULL) || ((func->device == device) && (index == 0)))
- return(func);
+ return func;
if (func->device == device)
found++;
found++;
if (found == index)
- return(func);
+ return func;
}
- return(NULL);
+ return NULL;
}
-// DJZ: I don't think is_bridge will work as is.
-//FIXME
+/* DJZ: I don't think is_bridge will work as is.
+ * FIXME */
static int is_bridge(struct pci_func * func)
{
- // Check the header type
+ /* Check the header type */
if (((func->config_space[0x03] >> 16) & 0xFF) == 0x01)
return 1;
else
}
+/**
+ * set_controller_speed - set the frequency and/or mode of a specific
+ * controller segment.
+ *
+ * @ctrl: controller to change frequency/mode for.
+ * @adapter_speed: the speed of the adapter we want to match.
+ * @hp_slot: the slot number where the adapter is installed.
+ *
+ * Returns 0 if we successfully change frequency and/or mode to match the
+ * adapter speed.
+ *
+ */
+static u8 set_controller_speed(struct controller *ctrl, u8 adapter_speed, u8 hp_slot)
+{
+ struct slot *slot;
+ u8 reg;
+ u8 slot_power = readb(ctrl->hpc_reg + SLOT_POWER);
+ u16 reg16;
+ u32 leds = readl(ctrl->hpc_reg + LED_CONTROL);
+
+ if (ctrl->speed == adapter_speed)
+ return 0;
+
+ /* We don't allow freq/mode changes if we find another adapter running
+ * in another slot on this controller */
+ for(slot = ctrl->slot; slot; slot = slot->next) {
+ if (slot->device == (hp_slot + ctrl->slot_device_offset))
+ continue;
+ if (!slot->hotplug_slot && !slot->hotplug_slot->info)
+ continue;
+ if (slot->hotplug_slot->info->adapter_status == 0)
+ 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 */
+ if (ctrl->speed < adapter_speed)
+ return 0;
+
+ return 1;
+ }
+
+ /* If the controller doesn't support freq/mode changes and the
+ * controller is running at a higher mode, we bail */
+ if ((ctrl->speed > adapter_speed) && (!ctrl->pcix_speed_capability))
+ return 1;
+
+ /* But we allow the adapter to run at a lower rate if possible */
+ if ((ctrl->speed < adapter_speed) && (!ctrl->pcix_speed_capability))
+ return 0;
+
+ /* We try to set the max speed supported by both the adapter and
+ * controller */
+ if (ctrl->speed_capability < adapter_speed) {
+ if (ctrl->speed == ctrl->speed_capability)
+ return 0;
+ adapter_speed = ctrl->speed_capability;
+ }
+
+ writel(0x0L, ctrl->hpc_reg + LED_CONTROL);
+ writeb(0x00, ctrl->hpc_reg + SLOT_ENABLE);
+
+ set_SOGO(ctrl);
+ wait_for_ctrl_irq(ctrl);
+
+ if (adapter_speed != PCI_SPEED_133MHz_PCIX)
+ reg = 0xF5;
+ else
+ reg = 0xF4;
+ pci_write_config_byte(ctrl->pci_dev, 0x41, reg);
+
+ reg16 = readw(ctrl->hpc_reg + NEXT_CURR_FREQ);
+ reg16 &= ~0x000F;
+ switch(adapter_speed) {
+ case(PCI_SPEED_133MHz_PCIX):
+ reg = 0x75;
+ reg16 |= 0xB;
+ break;
+ case(PCI_SPEED_100MHz_PCIX):
+ reg = 0x74;
+ reg16 |= 0xA;
+ break;
+ case(PCI_SPEED_66MHz_PCIX):
+ reg = 0x73;
+ reg16 |= 0x9;
+ break;
+ case(PCI_SPEED_66MHz):
+ reg = 0x73;
+ reg16 |= 0x1;
+ break;
+ default: /* 33MHz PCI 2.2 */
+ reg = 0x71;
+ break;
+
+ }
+ reg16 |= 0xB << 12;
+ writew(reg16, ctrl->hpc_reg + NEXT_CURR_FREQ);
+
+ mdelay(5);
+
+ /* Reenable interrupts */
+ writel(0, ctrl->hpc_reg + INT_MASK);
+
+ pci_write_config_byte(ctrl->pci_dev, 0x41, reg);
+
+ /* Restart state machine */
+ reg = ~0xF;
+ pci_read_config_byte(ctrl->pci_dev, 0x43, ®);
+ pci_write_config_byte(ctrl->pci_dev, 0x43, reg);
+
+ /* Only if mode change...*/
+ if (((ctrl->speed == PCI_SPEED_66MHz) && (adapter_speed == PCI_SPEED_66MHz_PCIX)) ||
+ ((ctrl->speed == PCI_SPEED_66MHz_PCIX) && (adapter_speed == PCI_SPEED_66MHz)))
+ set_SOGO(ctrl);
+
+ wait_for_ctrl_irq(ctrl);
+ mdelay(1100);
+
+ /* Restore LED/Slot state */
+ writel(leds, ctrl->hpc_reg + LED_CONTROL);
+ writeb(slot_power, ctrl->hpc_reg + SLOT_ENABLE);
+
+ set_SOGO(ctrl);
+ wait_for_ctrl_irq(ctrl);
+
+ ctrl->speed = adapter_speed;
+ slot = cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
+
+ info("Successfully changed frequency/mode for adapter in slot %d\n",
+ slot->number);
+ return 0;
+}
+
/* the following routines constitute the bulk of the
hotplug controller logic
*/
* If board isn't same, turns it back off.
*
*/
-static u32 board_replaced(struct pci_func * func, struct controller * ctrl)
+static u32 board_replaced(struct pci_func *func, struct controller *ctrl)
{
u8 hp_slot;
u8 temp_byte;
hp_slot = func->device - ctrl->slot_device_offset;
if (readl(ctrl->hpc_reg + INT_INPUT_CLEAR) & (0x01L << hp_slot)) {
- //*********************************
- // The switch is open.
- //*********************************
+ /**********************************
+ * The switch is open.
+ **********************************/
rc = INTERLOCK_OPEN;
} else if (is_slot_enabled (ctrl, hp_slot)) {
- //*********************************
- // The board is already on
- //*********************************
+ /**********************************
+ * The board is already on
+ **********************************/
rc = CARD_FUNCTIONING;
} else {
- // Wait for exclusive access to hardware
down(&ctrl->crit_sect);
- // turn on board without attaching to the bus
+ /* turn on board without attaching to the bus */
enable_slot_power (ctrl, hp_slot);
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
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
+ /* Change bits in slot power register to force another shift out
+ * 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);
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
wait_for_ctrl_irq (ctrl);
adapter_speed = get_adapter_speed(ctrl, hp_slot);
if (set_controller_speed(ctrl, adapter_speed, hp_slot))
rc = WRONG_BUS_FREQUENCY;
- // turn off board without attaching to the bus
+ /* turn off board without attaching to the bus */
disable_slot_power (ctrl, hp_slot);
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
wait_for_ctrl_irq (ctrl);
- // Done with exclusive hardware access
up(&ctrl->crit_sect);
if (rc)
- return(rc);
+ return rc;
- // Wait for exclusive access to hardware
down(&ctrl->crit_sect);
slot_enable (ctrl, hp_slot);
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
wait_for_ctrl_irq (ctrl);
- // Done with exclusive hardware access
up(&ctrl->crit_sect);
- // Wait for ~1 second because of hot plug spec
+ /* Wait for ~1 second because of hot plug spec */
long_delay(1*HZ);
- // Check for a power fault
+ /* Check for a power fault */
if (func->status == 0xFF) {
- // power fault occurred, but it was benign
+ /* power fault occurred, but it was benign */
rc = POWER_FAILURE;
func->status = 0;
} else
rc = cpqhp_valid_replace(ctrl, func);
if (!rc) {
- // It must be the same board
+ /* It must be the same board */
rc = cpqhp_configure_board(ctrl, func);
if (rc || src) {
- // If configuration fails, turn it off
- // 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.
+ /* If configuration fails, turn it off
+ * 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. */
- // Wait for exclusive access to hardware
down(&ctrl->crit_sect);
amber_LED_on (ctrl, hp_slot);
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
wait_for_ctrl_irq (ctrl);
- // Done with exclusive hardware access
up(&ctrl->crit_sect);
if (rc)
- return(rc);
+ return rc;
else
- return(1);
+ return 1;
}
func->status = 0;
}
if (rc) {
- // If configuration fails, turn it off
- // 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.
+ /* If configuration fails, turn it off
+ * 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. */
- // Wait for exclusive access to hardware
down(&ctrl->crit_sect);
amber_LED_on (ctrl, hp_slot);
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
wait_for_ctrl_irq (ctrl);
- // Done with exclusive hardware access
up(&ctrl->crit_sect);
- return(rc);
+ return rc;
}
- // Done configuring so turn LED on full time
+ /* Done configuring so turn LED on full time */
- // Wait for exclusive access to hardware
down(&ctrl->crit_sect);
green_LED_on (ctrl, hp_slot);
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
wait_for_ctrl_irq (ctrl);
- // Done with exclusive hardware access
up(&ctrl->crit_sect);
rc = 0;
} else {
- // Something is wrong
+ /* Something is wrong
- // 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.
+ * 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. */
- // Wait for exclusive access to hardware
down(&ctrl->crit_sect);
amber_LED_on (ctrl, hp_slot);
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
wait_for_ctrl_irq (ctrl);
- // Done with exclusive hardware access
up(&ctrl->crit_sect);
}
}
- return(rc);
+ return rc;
}
* Configures board
*
*/
-static u32 board_added(struct pci_func * func, struct controller * ctrl)
+static u32 board_added(struct pci_func *func, struct controller *ctrl)
{
u8 hp_slot;
u8 temp_byte;
dbg("%s: func->device, slot_offset, hp_slot = %d, %d ,%d\n",
__FUNCTION__, func->device, ctrl->slot_device_offset, hp_slot);
- // Wait for exclusive access to hardware
down(&ctrl->crit_sect);
- // turn on board without attaching to the bus
- enable_slot_power (ctrl, hp_slot);
+ /* turn on board without attaching to the bus */
+ enable_slot_power(ctrl, hp_slot);
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
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
+ /* Change bits in slot power register to force another shift out
+ * 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);
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
wait_for_ctrl_irq (ctrl);
adapter_speed = get_adapter_speed(ctrl, hp_slot);
if (set_controller_speed(ctrl, adapter_speed, hp_slot))
rc = WRONG_BUS_FREQUENCY;
- // turn off board without attaching to the bus
+ /* turn off board without attaching to the bus */
disable_slot_power (ctrl, hp_slot);
set_SOGO(ctrl);
- // Wait for SOBS to be unset
- wait_for_ctrl_irq (ctrl);
+ /* Wait for SOBS to be unset */
+ wait_for_ctrl_irq(ctrl);
- // Done with exclusive hardware access
up(&ctrl->crit_sect);
if (rc)
- return(rc);
+ return rc;
p_slot = cpqhp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
- // turn on board and blink green LED
+ /* turn on board and blink green LED */
- // Wait for exclusive access to hardware
dbg("%s: before down\n", __FUNCTION__);
down(&ctrl->crit_sect);
dbg("%s: after down\n", __FUNCTION__);
dbg("%s: before set_SOGO\n", __FUNCTION__);
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
dbg("%s: before wait_for_ctrl_irq\n", __FUNCTION__);
wait_for_ctrl_irq (ctrl);
dbg("%s: after wait_for_ctrl_irq\n", __FUNCTION__);
- // Done with exclusive hardware access
dbg("%s: before up\n", __FUNCTION__);
up(&ctrl->crit_sect);
dbg("%s: after up\n", __FUNCTION__);
- // Wait for ~1 second because of hot plug spec
+ /* Wait for ~1 second because of hot plug spec */
dbg("%s: before long_delay\n", __FUNCTION__);
long_delay(1*HZ);
dbg("%s: after long_delay\n", __FUNCTION__);
dbg("%s: func status = %x\n", __FUNCTION__, func->status);
- // Check for a power fault
+ /* Check for a power fault */
if (func->status == 0xFF) {
- // power fault occurred, but it was benign
+ /* power fault occurred, but it was benign */
temp_register = 0xFFFFFFFF;
dbg("%s: temp register set to %x by power fault\n", __FUNCTION__, temp_register);
rc = POWER_FAILURE;
func->status = 0;
} else {
- // Get vendor/device ID u32
+ /* Get vendor/device ID u32 */
ctrl->pci_bus->number = func->bus;
rc = pci_bus_read_config_dword (ctrl->pci_bus, PCI_DEVFN(func->device, func->function), PCI_VENDOR_ID, &temp_register);
dbg("%s: pci_read_config_dword returns %d\n", __FUNCTION__, rc);
dbg("%s: temp_register is %x\n", __FUNCTION__, temp_register);
if (rc != 0) {
- // Something's wrong here
+ /* Something's wrong here */
temp_register = 0xFFFFFFFF;
dbg("%s: temp register set to %x by error\n", __FUNCTION__, temp_register);
}
- // Preset return code. It will be changed later if things go okay.
+ /* Preset return code. It will be changed later if things go okay. */
rc = NO_ADAPTER_PRESENT;
}
- // All F's is an empty slot or an invalid board
- if (temp_register != 0xFFFFFFFF) { // Check for a board in the slot
+ /* All F's is an empty slot or an invalid board */
+ if (temp_register != 0xFFFFFFFF) { /* Check for a board in the slot */
res_lists.io_head = ctrl->io_head;
res_lists.mem_head = ctrl->mem_head;
res_lists.p_mem_head = ctrl->p_mem_head;
cpqhp_resource_sort_and_combine(&(ctrl->bus_head));
if (rc) {
- // Wait for exclusive access to hardware
down(&ctrl->crit_sect);
amber_LED_on (ctrl, hp_slot);
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
wait_for_ctrl_irq (ctrl);
- // Done with exclusive hardware access
up(&ctrl->crit_sect);
- return(rc);
+ return rc;
} else {
cpqhp_save_slot_config(ctrl, func);
}
func->switch_save = 0x10;
func->is_a_board = 0x01;
- //next, we will instantiate the linux pci_dev structures (with appropriate driver notification, if already present)
+ /* next, we will instantiate the linux pci_dev structures (with
+ * appropriate driver notification, if already present) */
dbg("%s: configure linux pci_dev structure\n", __FUNCTION__);
index = 0;
do {
}
} while (new_slot);
- // Wait for exclusive access to hardware
down(&ctrl->crit_sect);
green_LED_on (ctrl, hp_slot);
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
wait_for_ctrl_irq (ctrl);
- // Done with exclusive hardware access
up(&ctrl->crit_sect);
} else {
- // Wait for exclusive access to hardware
down(&ctrl->crit_sect);
amber_LED_on (ctrl, hp_slot);
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
wait_for_ctrl_irq (ctrl);
- // Done with exclusive hardware access
up(&ctrl->crit_sect);
- return(rc);
+ return rc;
}
return 0;
}
struct resource_lists res_lists;
struct pci_func *temp_func;
- if (func == NULL)
- return(1);
-
if (cpqhp_unconfigure_device(func))
- return(1);
+ return 1;
device = func->device;
hp_slot = func->device - ctrl->slot_device_offset;
dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot);
- // When we get here, it is safe to change base Address Registers.
- // We will attempt to save the base Address Register Lengths
+ /* When we get here, it is safe to change base address registers.
+ * We will attempt to save the base address register lengths */
if (replace_flag || !ctrl->add_support)
rc = cpqhp_save_base_addr_length(ctrl, func);
else if (!func->bus_head && !func->mem_head &&
!func->p_mem_head && !func->io_head) {
- // Here we check to see if we've saved any of the board's
- // resources already. If so, we'll skip the attempt to
- // determine what's being used.
+ /* Here we check to see if we've saved any of the board's
+ * resources already. If so, we'll skip the attempt to
+ * determine what's being used. */
index = 0;
temp_func = cpqhp_slot_find(func->bus, func->device, index++);
while (temp_func) {
if (!skip)
rc = cpqhp_save_used_resources(ctrl, func);
}
- // Change status to shutdown
+ /* Change status to shutdown */
if (func->is_a_board)
func->status = 0x01;
func->configured = 0;
- // Wait for exclusive access to hardware
down(&ctrl->crit_sect);
green_LED_off (ctrl, hp_slot);
set_SOGO(ctrl);
- // turn off SERR for slot
+ /* turn off SERR for slot */
temp_byte = readb(ctrl->hpc_reg + SLOT_SERR);
temp_byte &= ~(0x01 << hp_slot);
writeb(temp_byte, ctrl->hpc_reg + SLOT_SERR);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
wait_for_ctrl_irq (ctrl);
- // Done with exclusive hardware access
up(&ctrl->crit_sect);
if (!replace_flag && ctrl->add_support) {
func = cpqhp_slot_find(ctrl->bus, device, 0);
}
- // Setup slot structure with entry for empty slot
+ /* Setup slot structure with entry for empty slot */
func = cpqhp_slot_create(ctrl->bus);
- if (func == NULL) {
- // Out of memory
- return(1);
- }
+ if (func == NULL)
+ return 1;
func->bus = ctrl->bus;
func->device = device;
return 0;
}
-
-static void pushbutton_helper_thread (unsigned long data)
+static void pushbutton_helper_thread(unsigned long data)
{
pushbutton_pending = data;
up(&event_semaphore);
}
-// this is the main worker thread
+/* this is the main worker thread */
static int event_thread(void* data)
{
struct controller *ctrl;
}
-int cpqhp_event_start_thread (void)
+int cpqhp_event_start_thread(void)
{
int pid;
}
-void cpqhp_event_stop_thread (void)
+void cpqhp_event_stop_thread(void)
{
event_finished = 1;
dbg("event_thread finish command given\n");
}
-static int update_slot_info (struct controller *ctrl, struct slot *slot)
+static int update_slot_info(struct controller *ctrl, struct slot *slot)
{
struct hotplug_slot_info *info;
int result;
- info = kmalloc (sizeof (struct hotplug_slot_info), GFP_KERNEL);
+ info = kmalloc(sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
change = 0;
for (loop = 0; loop < 10; loop++) {
- //dbg("loop %d\n", loop);
+ /* dbg("loop %d\n", loop); */
if (ctrl->event_queue[loop].event_type != 0) {
hp_slot = ctrl->event_queue[loop].hp_slot;
dbg("button cancel\n");
del_timer(&p_slot->task_event);
- // Wait for exclusive access to hardware
down(&ctrl->crit_sect);
if (p_slot->state == BLINKINGOFF_STATE) {
- // slot is on
- // turn on green LED
+ /* slot is on */
dbg("turn on green LED\n");
green_LED_on (ctrl, hp_slot);
} else if (p_slot->state == BLINKINGON_STATE) {
- // slot is off
- // turn off green LED
+ /* slot is off */
dbg("turn off green LED\n");
green_LED_off (ctrl, hp_slot);
}
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
wait_for_ctrl_irq (ctrl);
- // Done with exclusive hardware access
up(&ctrl->crit_sect);
}
- // ***********button Released (No action on press...)
+ /*** button Released (No action on press...) */
else if (ctrl->event_queue[loop].event_type == INT_BUTTON_RELEASE) {
dbg("button release\n");
if (is_slot_enabled (ctrl, hp_slot)) {
- // slot is on
dbg("slot is on\n");
p_slot->state = BLINKINGOFF_STATE;
info(msg_button_off, p_slot->number);
} else {
- // slot is off
dbg("slot is off\n");
p_slot->state = BLINKINGON_STATE;
info(msg_button_on, p_slot->number);
}
- // Wait for exclusive access to hardware
down(&ctrl->crit_sect);
dbg("blink green LED and turn off amber\n");
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
wait_for_ctrl_irq (ctrl);
- // Done with exclusive hardware access
up(&ctrl->crit_sect);
init_timer(&p_slot->task_event);
p_slot->hp_slot = hp_slot;
p_slot->ctrl = ctrl;
-// p_slot->physical_slot = physical_slot;
- p_slot->task_event.expires = jiffies + 5 * HZ; // 5 second delay
+/* p_slot->physical_slot = physical_slot; */
+ p_slot->task_event.expires = jiffies + 5 * HZ; /* 5 second delay */
p_slot->task_event.function = pushbutton_helper_thread;
p_slot->task_event.data = (u32) p_slot;
dbg("add_timer p_slot = %p\n", p_slot);
add_timer(&p_slot->task_event);
}
- // ***********POWER FAULT
+ /***********POWER FAULT */
else if (ctrl->event_queue[loop].event_type == INT_POWER_FAULT) {
dbg("power fault\n");
} else {
change = 1;
}
- } // End of FOR loop
+ } /* End of FOR loop */
}
return;
* Handles all pending events and exits.
*
*/
-void cpqhp_pushbutton_thread (unsigned long slot)
+void cpqhp_pushbutton_thread(unsigned long slot)
{
u8 hp_slot;
u8 device;
device = p_slot->device;
- if (is_slot_enabled (ctrl, hp_slot)) {
+ if (is_slot_enabled(ctrl, hp_slot)) {
p_slot->state = POWEROFF_STATE;
- // power Down board
+ /* power Down board */
func = cpqhp_slot_find(p_slot->bus, p_slot->device, 0);
dbg("In power_down_board, func = %p, ctrl = %p\n", func, ctrl);
if (!func) {
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
wait_for_ctrl_irq (ctrl);
}
}
p_slot->state = STATIC_STATE;
} else {
p_slot->state = POWERON_STATE;
- // slot is off
+ /* slot is off */
func = cpqhp_slot_find(p_slot->bus, p_slot->device, 0);
dbg("In add_board, func = %p, ctrl = %p\n", func, ctrl);
if (func != NULL && ctrl != NULL) {
if (cpqhp_process_SI(ctrl, func) != 0) {
- amber_LED_on (ctrl, hp_slot);
- green_LED_off (ctrl, hp_slot);
+ amber_LED_on(ctrl, hp_slot);
+ green_LED_off(ctrl, hp_slot);
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
wait_for_ctrl_irq (ctrl);
}
}
}
-int cpqhp_process_SI (struct controller *ctrl, struct pci_func *func)
+int cpqhp_process_SI(struct controller *ctrl, struct pci_func *func)
{
u8 device, hp_slot;
u16 temp_word;
struct slot* p_slot;
int physical_slot = 0;
- if (!ctrl)
- return(1);
-
tempdword = 0;
device = func->device;
hp_slot = device - ctrl->slot_device_offset;
p_slot = cpqhp_find_slot(ctrl, device);
- if (p_slot) {
+ if (p_slot)
physical_slot = p_slot->number;
- }
- // Check to see if the interlock is closed
+ /* Check to see if the interlock is closed */
tempdword = readl(ctrl->hpc_reg + INT_INPUT_CLEAR);
if (tempdword & (0x01 << hp_slot)) {
- return(1);
+ return 1;
}
if (func->is_a_board) {
rc = board_replaced(func, ctrl);
} else {
- // add board
+ /* add board */
slot_remove(func);
func = cpqhp_slot_create(ctrl->bus);
- if (func == NULL) {
- return(1);
- }
+ if (func == NULL)
+ return 1;
func->bus = ctrl->bus;
func->device = device;
func->configured = 0;
func->is_a_board = 1;
- // We have to save the presence info for these slots
+ /* We have to save the presence info for these slots */
temp_word = ctrl->ctrl_int_comp >> 16;
func->presence_save = (temp_word >> hp_slot) & 0x01;
func->presence_save |= (temp_word >> (hp_slot + 7)) & 0x02;
} else
slot_remove(func);
- // Setup slot structure with entry for empty slot
+ /* Setup slot structure with entry for empty slot */
func = cpqhp_slot_create(ctrl->bus);
- if (func == NULL) {
- // Out of memory
- return(1);
- }
+ if (func == NULL)
+ return 1;
func->bus = ctrl->bus;
func->device = device;
func->configured = 0;
func->is_a_board = 0;
- // We have to save the presence info for these slots
+ /* We have to save the presence info for these slots */
temp_word = ctrl->ctrl_int_comp >> 16;
func->presence_save = (temp_word >> hp_slot) & 0x01;
func->presence_save |=
}
-int cpqhp_process_SS (struct controller *ctrl, struct pci_func *func)
+int cpqhp_process_SS(struct controller *ctrl, struct pci_func *func)
{
u8 device, class_code, header_type, BCR;
u8 index = 0;
physical_slot = p_slot->number;
}
- // Make sure there are no video controllers here
+ /* Make sure there are no video controllers here */
while (func && !rc) {
pci_bus->number = func->bus;
devfn = PCI_DEVFN(func->device, func->function);
- // Check the Class Code
+ /* Check the Class Code */
rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code);
if (rc)
return rc;
/* Display/Video adapter (not supported) */
rc = REMOVE_NOT_SUPPORTED;
} else {
- // See if it's a bridge
+ /* See if it's a bridge */
rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &header_type);
if (rc)
return rc;
- // If it's a bridge, check the VGA Enable bit
+ /* If it's a bridge, check the VGA Enable bit */
if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_BRIDGE_CONTROL, &BCR);
if (rc)
return rc;
- // If the VGA Enable bit is set, remove isn't supported
+ /* If the VGA Enable bit is set, remove isn't
+ * supported */
if (BCR & PCI_BRIDGE_CTL_VGA) {
rc = REMOVE_NOT_SUPPORTED;
}
func = cpqhp_slot_find(ctrl->bus, device, 0);
if ((func != NULL) && !rc) {
- //FIXME: Replace flag should be passed into process_SS
+ /* FIXME: Replace flag should be passed into process_SS */
replace_flag = !(ctrl->add_support);
rc = remove_board(func, replace_flag, ctrl);
} else if (!rc) {
if (p_slot)
update_slot_info(ctrl, p_slot);
- return(rc);
+ return rc;
}
+/**
+ * switch_leds: switch the leds, go from one site to the other.
+ * @ctrl: controller to use
+ * @num_of_slots: number of slots to use
+ * @direction: 1 to start from the left side, 0 to start right.
+ */
+static void switch_leds(struct controller *ctrl, const int num_of_slots,
+ u32 *work_LED, const int direction)
+{
+ int loop;
+
+ for (loop = 0; loop < num_of_slots; loop++) {
+ if (direction)
+ *work_LED = *work_LED >> 1;
+ else
+ *work_LED = *work_LED << 1;
+ writel(*work_LED, ctrl->hpc_reg + LED_CONTROL);
+
+ set_SOGO(ctrl);
+
+ /* Wait for SOGO interrupt */
+ wait_for_ctrl_irq(ctrl);
+ /* Get ready for next iteration */
+ long_delay((2*HZ)/10);
+ }
+}
/**
* hardware_test - runs hardware tests
*
* For hot plug ctrl folks to play with.
- * test_num is the number entered in the GUI
+ * test_num is the number written to the "test" file in sysfs
*
*/
int cpqhp_hardware_test(struct controller *ctrl, int test_num)
switch (test_num) {
case 1:
- // Do stuff here!
+ /* Do stuff here! */
- // Do that funky LED thing
- save_LED = readl(ctrl->hpc_reg + LED_CONTROL); // so we can restore them later
+ /* Do that funky LED thing */
+ /* so we can restore them later */
+ save_LED = readl(ctrl->hpc_reg + LED_CONTROL);
work_LED = 0x01010101;
- writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
- for (loop = 0; loop < num_of_slots; loop++) {
- set_SOGO(ctrl);
-
- // Wait for SOGO interrupt
- wait_for_ctrl_irq (ctrl);
-
- // Get ready for next iteration
- work_LED = work_LED << 1;
- writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
- long_delay((2*HZ)/10);
- }
- for (loop = 0; loop < num_of_slots; loop++) {
- work_LED = work_LED >> 1;
- writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
-
- set_SOGO(ctrl);
-
- // Wait for SOGO interrupt
- wait_for_ctrl_irq (ctrl);
-
- // Get ready for next iteration
- long_delay((2*HZ)/10);
- }
- for (loop = 0; loop < num_of_slots; loop++) {
- work_LED = work_LED << 1;
- writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
-
- set_SOGO(ctrl);
-
- // Wait for SOGO interrupt
- wait_for_ctrl_irq (ctrl);
-
- // Get ready for next iteration
- long_delay((2*HZ)/10);
- }
- for (loop = 0; loop < num_of_slots; loop++) {
- work_LED = work_LED >> 1;
- writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
-
- set_SOGO(ctrl);
-
- // Wait for SOGO interrupt
- wait_for_ctrl_irq (ctrl);
-
- // Get ready for next iteration
- long_delay((2*HZ)/10);
- }
+ switch_leds(ctrl, num_of_slots, &work_LED, 0);
+ switch_leds(ctrl, num_of_slots, &work_LED, 1);
+ switch_leds(ctrl, num_of_slots, &work_LED, 0);
+ switch_leds(ctrl, num_of_slots, &work_LED, 1);
work_LED = 0x01010000;
writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
- for (loop = 0; loop < num_of_slots; loop++) {
- set_SOGO(ctrl);
-
- // Wait for SOGO interrupt
- wait_for_ctrl_irq (ctrl);
-
- // Get ready for next iteration
- work_LED = work_LED << 1;
- writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
- long_delay((2*HZ)/10);
- }
- for (loop = 0; loop < num_of_slots; loop++) {
- work_LED = work_LED >> 1;
- writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
-
- set_SOGO(ctrl);
-
- // Wait for SOGO interrupt
- wait_for_ctrl_irq (ctrl);
-
- // Get ready for next iteration
- long_delay((2*HZ)/10);
- }
+ switch_leds(ctrl, num_of_slots, &work_LED, 0);
+ switch_leds(ctrl, num_of_slots, &work_LED, 1);
work_LED = 0x00000101;
writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
- for (loop = 0; loop < num_of_slots; loop++) {
- work_LED = work_LED << 1;
- writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
-
- set_SOGO(ctrl);
-
- // Wait for SOGO interrupt
- wait_for_ctrl_irq (ctrl);
-
- // Get ready for next iteration
- long_delay((2*HZ)/10);
- }
- for (loop = 0; loop < num_of_slots; loop++) {
- work_LED = work_LED >> 1;
- writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
-
- set_SOGO(ctrl);
-
- // Wait for SOGO interrupt
- wait_for_ctrl_irq (ctrl);
-
- // Get ready for next iteration
- long_delay((2*HZ)/10);
- }
-
+ switch_leds(ctrl, num_of_slots, &work_LED, 0);
+ switch_leds(ctrl, num_of_slots, &work_LED, 1);
work_LED = 0x01010000;
writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
for (loop = 0; loop < num_of_slots; loop++) {
set_SOGO(ctrl);
- // Wait for SOGO interrupt
+ /* Wait for SOGO interrupt */
wait_for_ctrl_irq (ctrl);
- // Get ready for next iteration
+ /* Get ready for next iteration */
long_delay((3*HZ)/10);
work_LED = work_LED >> 16;
writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
set_SOGO(ctrl);
- // Wait for SOGO interrupt
+ /* Wait for SOGO interrupt */
wait_for_ctrl_irq (ctrl);
- // Get ready for next iteration
+ /* Get ready for next iteration */
long_delay((3*HZ)/10);
work_LED = work_LED << 16;
writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
writel(work_LED, ctrl->hpc_reg + LED_CONTROL);
}
- writel (save_LED, ctrl->hpc_reg + LED_CONTROL); // put it back the way it was
+ /* put it back the way it was */
+ writel(save_LED, ctrl->hpc_reg + LED_CONTROL);
set_SOGO(ctrl);
- // Wait for SOBS to be unset
+ /* Wait for SOBS to be unset */
wait_for_ctrl_irq (ctrl);
break;
case 2:
- // Do other stuff here!
+ /* Do other stuff here! */
break;
case 3:
- // and more...
+ /* and more... */
break;
}
return 0;
* Returns 0 if success
*
*/
-static u32 configure_new_device (struct controller * ctrl, struct pci_func * func,
+static u32 configure_new_device(struct controller * ctrl, struct pci_func * func,
u8 behind_bridge, struct resource_lists * resources)
{
u8 temp_byte, function, max_functions, stop_it;
new_slot = func;
dbg("%s\n", __FUNCTION__);
- // Check for Multi-function device
+ /* Check for Multi-function device */
ctrl->pci_bus->number = func->bus;
rc = pci_bus_read_config_byte (ctrl->pci_bus, PCI_DEVFN(func->device, func->function), 0x0E, &temp_byte);
if (rc) {
return rc;
}
- if (temp_byte & 0x80) // Multi-function device
+ if (temp_byte & 0x80) /* Multi-function device */
max_functions = 8;
else
max_functions = 1;
cpqhp_return_board_resources(new_slot, resources);
}
- return(rc);
+ return rc;
}
function++;
stop_it = 0;
- // The following loop skips to the next present function
- // and creates a board structure
+ /* The following loop skips to the next present function
+ * and creates a board structure */
while ((function < max_functions) && (!stop_it)) {
pci_bus_read_config_dword (ctrl->pci_bus, PCI_DEVFN(func->device, function), 0x00, &ID);
- if (ID == 0xFFFFFFFF) { // There's nothing there.
+ if (ID == 0xFFFFFFFF) { /* There's nothing there. */
function++;
- } else { // There's something there
- // Setup slot structure.
+ } else { /* There's something there */
+ /* Setup slot structure. */
new_slot = cpqhp_slot_create(func->bus);
- if (new_slot == NULL) {
- // Out of memory
- return(1);
- }
+ if (new_slot == NULL)
+ return 1;
new_slot->bus = func->bus;
new_slot->device = func->device;
* Returns 0 if success
*
*/
-static int configure_new_function (struct controller * ctrl, struct pci_func * func,
- u8 behind_bridge, struct resource_lists * resources)
+static int configure_new_function(struct controller *ctrl, struct pci_func *func,
+ u8 behind_bridge,
+ struct resource_lists *resources)
{
int cloop;
u8 IRQ = 0;
pci_bus->number = func->bus;
devfn = PCI_DEVFN(func->device, func->function);
- // Check for Bridge
- rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &temp_byte);
+ /* Check for Bridge */
+ rc = pci_bus_read_config_byte(pci_bus, devfn, PCI_HEADER_TYPE, &temp_byte);
if (rc)
return rc;
- if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { // PCI-PCI Bridge
- // set Primary bus
+ if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { /* PCI-PCI Bridge */
+ /* set Primary bus */
dbg("set Primary bus = %d\n", func->bus);
- rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_PRIMARY_BUS, func->bus);
+ rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_PRIMARY_BUS, func->bus);
if (rc)
return rc;
- // find range of busses to use
+ /* find range of busses to use */
dbg("find ranges of buses to use\n");
- bus_node = get_max_resource(&resources->bus_head, 1);
+ bus_node = get_max_resource(&(resources->bus_head), 1);
- // If we don't have any busses to allocate, we can't continue
+ /* If we don't have any busses to allocate, we can't continue */
if (!bus_node)
return -ENOMEM;
- // set Secondary bus
+ /* set Secondary bus */
temp_byte = bus_node->base;
dbg("set Secondary bus = %d\n", bus_node->base);
- rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_SECONDARY_BUS, temp_byte);
+ rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SECONDARY_BUS, temp_byte);
if (rc)
return rc;
- // set subordinate bus
+ /* set subordinate bus */
temp_byte = bus_node->base + bus_node->length - 1;
dbg("set subordinate bus = %d\n", bus_node->base + bus_node->length - 1);
- rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte);
+ rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte);
if (rc)
return rc;
- // set subordinate Latency Timer and base Latency Timer
+ /* set subordinate Latency Timer and base Latency Timer */
temp_byte = 0x40;
- rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_SEC_LATENCY_TIMER, temp_byte);
+ rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SEC_LATENCY_TIMER, temp_byte);
if (rc)
return rc;
- rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_LATENCY_TIMER, temp_byte);
+ rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_LATENCY_TIMER, temp_byte);
if (rc)
return rc;
- // set Cache Line size
+ /* set Cache Line size */
temp_byte = 0x08;
- rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_CACHE_LINE_SIZE, temp_byte);
+ rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_CACHE_LINE_SIZE, temp_byte);
if (rc)
return rc;
- // Setup the IO, memory, and prefetchable windows
-
+ /* Setup the IO, memory, and prefetchable windows */
io_node = get_max_resource(&(resources->io_head), 0x1000);
if (!io_node)
return -ENOMEM;
return -ENOMEM;
dbg("Setup the IO, memory, and prefetchable windows\n");
dbg("io_node\n");
- dbg("(base, len, next) (%x, %x, %p)\n", io_node->base, io_node->length, io_node->next);
+ dbg("(base, len, next) (%x, %x, %p)\n", io_node->base,
+ io_node->length, io_node->next);
dbg("mem_node\n");
- dbg("(base, len, next) (%x, %x, %p)\n", mem_node->base, mem_node->length, mem_node->next);
+ dbg("(base, len, next) (%x, %x, %p)\n", mem_node->base,
+ mem_node->length, mem_node->next);
dbg("p_mem_node\n");
- dbg("(base, len, next) (%x, %x, %p)\n", p_mem_node->base, p_mem_node->length, p_mem_node->next);
+ dbg("(base, len, next) (%x, %x, %p)\n", p_mem_node->base,
+ p_mem_node->length, p_mem_node->next);
- // set up the IRQ info
+ /* set up the IRQ info */
if (!resources->irqs) {
irqs.barber_pole = 0;
irqs.interrupt[0] = 0;
irqs.valid_INT = resources->irqs->valid_INT;
}
- // set up resource lists that are now aligned on top and bottom
- // for anything behind the bridge.
+ /* set up resource lists that are now aligned on top and bottom
+ * for anything behind the bridge. */
temp_resources.bus_head = bus_node;
temp_resources.io_head = io_node;
temp_resources.mem_head = mem_node;
temp_resources.p_mem_head = p_mem_node;
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
- hold_bus_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
- hold_IO_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
- hold_mem_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
- hold_p_mem_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
+ /* 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 */
+ 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);
+ hold_p_mem_node = kmalloc(sizeof(*hold_p_mem_node), GFP_KERNEL);
if (!hold_bus_node || !hold_IO_node || !hold_mem_node || !hold_p_mem_node) {
- if (hold_bus_node)
- kfree(hold_bus_node);
- if (hold_IO_node)
- kfree(hold_IO_node);
- if (hold_mem_node)
- kfree(hold_mem_node);
- if (hold_p_mem_node)
- kfree(hold_p_mem_node);
-
- return(1);
+ kfree(hold_bus_node);
+ kfree(hold_IO_node);
+ kfree(hold_mem_node);
+ kfree(hold_p_mem_node);
+
+ return 1;
}
memcpy(hold_bus_node, bus_node, sizeof(struct pci_resource));
bus_node->length -= 1;
bus_node->next = NULL;
- // If we have IO resources copy them and fill in the bridge's
- // IO range registers
+ /* If we have IO resources copy them and fill in the bridge's
+ * IO range registers */
if (io_node) {
memcpy(hold_IO_node, io_node, sizeof(struct pci_resource));
io_node->next = NULL;
- // set IO base and Limit registers
+ /* set IO base and Limit registers */
temp_byte = io_node->base >> 8;
- rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_BASE, temp_byte);
+ rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_BASE, temp_byte);
temp_byte = (io_node->base + io_node->length - 1) >> 8;
- rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_LIMIT, temp_byte);
+ rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_LIMIT, temp_byte);
} else {
kfree(hold_IO_node);
hold_IO_node = NULL;
}
- // If we have memory resources copy them and fill in the bridge's
- // memory range registers. Otherwise, fill in the range
- // registers with values that disable them.
+ /* If we have memory resources copy them and fill in the
+ * bridge's memory range registers. Otherwise, fill in the
+ * range registers with values that disable them. */
if (mem_node) {
memcpy(hold_mem_node, mem_node, sizeof(struct pci_resource));
mem_node->next = NULL;
- // set Mem base and Limit registers
+ /* set Mem base and Limit registers */
temp_word = mem_node->base >> 16;
- rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_BASE, temp_word);
+ rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_BASE, temp_word);
temp_word = (mem_node->base + mem_node->length - 1) >> 16;
- rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
+ rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
} else {
temp_word = 0xFFFF;
- rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_BASE, temp_word);
+ rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_BASE, temp_word);
temp_word = 0x0000;
- rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
+ rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
kfree(hold_mem_node);
hold_mem_node = NULL;
}
- // If we have prefetchable memory resources copy them and
- // fill in the bridge's memory range registers. Otherwise,
- // fill in the range registers with values that disable them.
+ /* If we have prefetchable memory resources copy them and
+ * fill in the bridge's memory range registers. Otherwise,
+ * fill in the range registers with values that disable them. */
if (p_mem_node) {
memcpy(hold_p_mem_node, p_mem_node, sizeof(struct pci_resource));
p_mem_node->next = NULL;
- // set Pre Mem base and Limit registers
+ /* set Pre Mem base and Limit registers */
temp_word = p_mem_node->base >> 16;
rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word);
hold_p_mem_node = NULL;
}
- // 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;
- // Here we actually find the devices and configure them
+ /* Here we actually find the devices and configure them */
for (device = 0; (device <= 0x1F) && !rc; device++) {
irqs.barber_pole = (irqs.barber_pole + 1) & 0x03;
pci_bus_read_config_dword (pci_bus, PCI_DEVFN(device, 0), 0x00, &ID);
pci_bus->number = func->bus;
- if (ID != 0xFFFFFFFF) { // device Present
- // Setup slot structure.
+ if (ID != 0xFFFFFFFF) { /* device present */
+ /* Setup slot structure. */
new_slot = cpqhp_slot_create(hold_bus_node->base);
if (new_slot == NULL) {
- // Out of memory
rc = -ENOMEM;
continue;
}
rc = configure_new_device(ctrl, new_slot, 1, &temp_resources);
dbg("configure_new_device rc=0x%x\n",rc);
- } // End of IF (device in slot?)
- } // End of FOR loop
-
- if (rc) {
- cpqhp_destroy_resource_list(&temp_resources);
+ } /* End of IF (device in slot?) */
+ } /* End of FOR loop */
- return_resource(&(resources->bus_head), hold_bus_node);
- return_resource(&(resources->io_head), hold_IO_node);
- return_resource(&(resources->mem_head), hold_mem_node);
- return_resource(&(resources->p_mem_head), hold_p_mem_node);
- return(rc);
- }
- // save the interrupt routing information
+ if (rc)
+ goto free_and_out;
+ /* save the interrupt routing information */
if (resources->irqs) {
resources->irqs->interrupt[0] = irqs.interrupt[0];
resources->irqs->interrupt[1] = irqs.interrupt[1];
resources->irqs->interrupt[3] = irqs.interrupt[3];
resources->irqs->valid_INT = irqs.valid_INT;
} else if (!behind_bridge) {
- // We need to hook up the interrupts here
+ /* We need to hook up the interrupts here */
for (cloop = 0; cloop < 4; cloop++) {
if (irqs.valid_INT & (0x01 << cloop)) {
rc = cpqhp_set_irq(func->bus, func->device,
0x0A + cloop, irqs.interrupt[cloop]);
- if (rc) {
- cpqhp_destroy_resource_list (&temp_resources);
-
- return_resource(&(resources-> bus_head), hold_bus_node);
- return_resource(&(resources-> io_head), hold_IO_node);
- return_resource(&(resources-> mem_head), hold_mem_node);
- return_resource(&(resources-> p_mem_head), hold_p_mem_node);
- return rc;
- }
+ if (rc)
+ goto free_and_out;
}
- } // end of for loop
+ } /* end of for loop */
}
- // Return unused bus resources
- // First use the temporary node to store information for the board
+ /* Return unused bus resources
+ * First use the temporary node to store information for
+ * the board */
if (hold_bus_node && bus_node && temp_resources.bus_head) {
hold_bus_node->length = bus_node->base - hold_bus_node->base;
temp_byte = temp_resources.bus_head->base - 1;
- // set subordinate bus
+ /* set subordinate bus */
rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte);
if (temp_resources.bus_head->length == 0) {
}
}
- // If we have IO space available and there is some left,
- // return the unused portion
+ /* If we have IO space available and there is some left,
+ * return the unused portion */
if (hold_IO_node && temp_resources.io_head) {
io_node = do_pre_bridge_resource_split(&(temp_resources.io_head),
&hold_IO_node, 0x1000);
- // Check if we were able to split something off
+ /* Check if we were able to split something off */
if (io_node) {
hold_IO_node->base = io_node->base + io_node->length;
io_node = do_bridge_resource_split(&(temp_resources.io_head), 0x1000);
- // Check if we were able to split something off
+ /* Check if we were able to split something off */
if (io_node) {
- // First use the temporary node to store information for the board
+ /* First use the temporary node to store
+ * information for the board */
hold_IO_node->length = io_node->base - hold_IO_node->base;
- // If we used any, add it to the board's list
+ /* If we used any, add it to the board's list */
if (hold_IO_node->length) {
hold_IO_node->next = func->io_head;
func->io_head = hold_IO_node;
return_resource(&(resources->io_head), io_node);
} else {
- // it doesn't need any IO
+ /* it doesn't need any IO */
temp_word = 0x0000;
rc = pci_bus_write_config_word (pci_bus, devfn, PCI_IO_LIMIT, temp_word);
kfree(hold_IO_node);
}
} else {
- // it used most of the range
+ /* it used most of the range */
hold_IO_node->next = func->io_head;
func->io_head = hold_IO_node;
}
} else if (hold_IO_node) {
- // it used the whole range
+ /* it used the whole range */
hold_IO_node->next = func->io_head;
func->io_head = hold_IO_node;
}
- // If we have memory space available and there is some left,
- // return the unused portion
+ /* If we have memory space available and there is some left,
+ * return the unused portion */
if (hold_mem_node && temp_resources.mem_head) {
mem_node = do_pre_bridge_resource_split(&(temp_resources. mem_head),
&hold_mem_node, 0x100000);
- // Check if we were able to split something off
+ /* Check if we were able to split something off */
if (mem_node) {
hold_mem_node->base = mem_node->base + mem_node->length;
mem_node = do_bridge_resource_split(&(temp_resources.mem_head), 0x100000);
- // Check if we were able to split something off
+ /* Check if we were able to split something off */
if (mem_node) {
- // First use the temporary node to store information for the board
+ /* First use the temporary node to store
+ * information for the board */
hold_mem_node->length = mem_node->base - hold_mem_node->base;
if (hold_mem_node->length) {
hold_mem_node->next = func->mem_head;
func->mem_head = hold_mem_node;
- // configure end address
+ /* configure end address */
temp_word = (mem_node->base - 1) >> 16;
rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
- // Return unused resources to the pool
+ /* Return unused resources to the pool */
return_resource(&(resources->mem_head), mem_node);
} else {
- // it doesn't need any Mem
+ /* it doesn't need any Mem */
temp_word = 0x0000;
rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
kfree(hold_mem_node);
}
} else {
- // it used most of the range
+ /* it used most of the range */
hold_mem_node->next = func->mem_head;
func->mem_head = hold_mem_node;
}
} else if (hold_mem_node) {
- // it used the whole range
+ /* it used the whole range */
hold_mem_node->next = func->mem_head;
func->mem_head = hold_mem_node;
}
- // If we have prefetchable memory space available and there is some
- // left at the end, return the unused portion
+ /* If we have prefetchable memory space available and there
+ * is some left at the end, return the unused portion */
if (hold_p_mem_node && temp_resources.p_mem_head) {
p_mem_node = do_pre_bridge_resource_split(&(temp_resources.p_mem_head),
&hold_p_mem_node, 0x100000);
- // Check if we were able to split something off
+ /* Check if we were able to split something off */
if (p_mem_node) {
hold_p_mem_node->base = p_mem_node->base + p_mem_node->length;
p_mem_node = do_bridge_resource_split(&(temp_resources.p_mem_head), 0x100000);
- // Check if we were able to split something off
+ /* Check if we were able to split something off */
if (p_mem_node) {
- // First use the temporary node to store information for the board
+ /* First use the temporary node to store
+ * information for the board */
hold_p_mem_node->length = p_mem_node->base - hold_p_mem_node->base;
- // If we used any, add it to the board's list
+ /* If we used any, add it to the board's list */
if (hold_p_mem_node->length) {
hold_p_mem_node->next = func->p_mem_head;
func->p_mem_head = hold_p_mem_node;
return_resource(&(resources->p_mem_head), p_mem_node);
} else {
- // it doesn't need any PMem
+ /* it doesn't need any PMem */
temp_word = 0x0000;
rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
kfree(hold_p_mem_node);
}
} else {
- // it used the most of the range
+ /* it used the most of the range */
hold_p_mem_node->next = func->p_mem_head;
func->p_mem_head = hold_p_mem_node;
}
} else if (hold_p_mem_node) {
- // it used the whole range
+ /* it used the whole range */
hold_p_mem_node->next = func->p_mem_head;
func->p_mem_head = hold_p_mem_node;
}
- // We should be configuring an IRQ and the bridge's base address
- // registers if it needs them. Although we have never seen such
- // a device
-
- // enable card
- command = 0x0157; // = PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE | PCI_COMMAND_PARITY | PCI_COMMAND_SERR
+ /* We should be configuring an IRQ and the bridge's base address
+ * registers if it needs them. Although we have never seen such
+ * a device */
+
+ /* enable card */
+ command = 0x0157; /* = PCI_COMMAND_IO |
+ * PCI_COMMAND_MEMORY |
+ * PCI_COMMAND_MASTER |
+ * PCI_COMMAND_INVALIDATE |
+ * PCI_COMMAND_PARITY |
+ * PCI_COMMAND_SERR */
rc = pci_bus_write_config_word (pci_bus, devfn, PCI_COMMAND, command);
- // set Bridge Control Register
- command = 0x07; // = PCI_BRIDGE_CTL_PARITY | PCI_BRIDGE_CTL_SERR | PCI_BRIDGE_CTL_NO_ISA
+ /* set Bridge Control Register */
+ command = 0x07; /* = PCI_BRIDGE_CTL_PARITY |
+ * PCI_BRIDGE_CTL_SERR |
+ * PCI_BRIDGE_CTL_NO_ISA */
rc = pci_bus_write_config_word (pci_bus, devfn, PCI_BRIDGE_CONTROL, command);
} else if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_NORMAL) {
- // Standard device
+ /* Standard device */
rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code);
if (class_code == PCI_BASE_CLASS_DISPLAY) {
- // Display (video) adapter (not supported)
- return(DEVICE_TYPE_NOT_SUPPORTED);
+ /* Display (video) adapter (not supported) */
+ return DEVICE_TYPE_NOT_SUPPORTED;
}
- // Figure out IO and memory needs
+ /* Figure out IO and memory needs */
for (cloop = 0x10; cloop <= 0x24; cloop += 4) {
temp_register = 0xFFFFFFFF;
rc = pci_bus_read_config_dword (pci_bus, devfn, cloop, &temp_register);
dbg("CND: base = 0x%x\n", temp_register);
- if (temp_register) { // If this register is implemented
+ if (temp_register) { /* If this register is implemented */
if ((temp_register & 0x03L) == 0x01) {
- // Map IO
+ /* Map IO */
- // set base = amount of IO space
+ /* set base = amount of IO space */
base = temp_register & 0xFFFFFFFC;
base = ~base + 1;
io_node->base, io_node->length, io_node->next);
dbg("func (%p) io_head (%p)\n", func, func->io_head);
- // allocate the resource to the board
+ /* allocate the resource to the board */
if (io_node) {
base = io_node->base;
} else
return -ENOMEM;
} else if ((temp_register & 0x0BL) == 0x08) {
- // Map prefetchable memory
+ /* Map prefetchable memory */
base = temp_register & 0xFFFFFFF0;
base = ~base + 1;
dbg("CND: length = 0x%x\n", base);
p_mem_node = get_resource(&(resources->p_mem_head), base);
- // allocate the resource to the board
+ /* allocate the resource to the board */
if (p_mem_node) {
base = p_mem_node->base;
} else
return -ENOMEM;
} else if ((temp_register & 0x0BL) == 0x00) {
- // Map memory
+ /* Map memory */
base = temp_register & 0xFFFFFFF0;
base = ~base + 1;
dbg("CND: length = 0x%x\n", base);
mem_node = get_resource(&(resources->mem_head), base);
- // allocate the resource to the board
+ /* allocate the resource to the board */
if (mem_node) {
base = mem_node->base;
} else
return -ENOMEM;
} else if ((temp_register & 0x0BL) == 0x04) {
- // Map memory
+ /* Map memory */
base = temp_register & 0xFFFFFFF0;
base = ~base + 1;
dbg("CND: length = 0x%x\n", base);
mem_node = get_resource(&(resources->mem_head), base);
- // allocate the resource to the board
+ /* allocate the resource to the board */
if (mem_node) {
base = mem_node->base;
} else
return -ENOMEM;
} else if ((temp_register & 0x0BL) == 0x06) {
- // Those bits are reserved, we can't handle this
- return(1);
+ /* Those bits are reserved, we can't handle this */
+ return 1;
} else {
- // Requesting space below 1M
- return(NOT_ENOUGH_RESOURCES);
+ /* Requesting space below 1M */
+ return NOT_ENOUGH_RESOURCES;
}
- rc = pci_bus_write_config_dword (pci_bus, devfn, cloop, base);
+ rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, base);
- // Check for 64-bit base
+ /* Check for 64-bit base */
if ((temp_register & 0x07L) == 0x04) {
cloop += 4;
- // Upper 32 bits of address always zero on today's systems
- // FIXME this is probably not true on Alpha and ia64???
+ /* Upper 32 bits of address always zero
+ * on today's systems */
+ /* FIXME this is probably not true on
+ * Alpha and ia64??? */
base = 0;
- rc = pci_bus_write_config_dword (pci_bus, devfn, cloop, base);
+ rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, base);
}
}
- } // End of base register loop
+ } /* End of base register loop */
if (cpqhp_legacy_mode) {
- // Figure out which interrupt pin this function uses
+ /* Figure out which interrupt pin this function uses */
rc = pci_bus_read_config_byte (pci_bus, devfn,
PCI_INTERRUPT_PIN, &temp_byte);
- // If this function needs an interrupt and we are behind a bridge
- // and the pin is tied to something that's alread mapped,
- // set this one the same
+ /* If this function needs an interrupt and we are behind
+ * a bridge and the pin is tied to something that's
+ * alread mapped, set this one the same */
if (temp_byte && resources->irqs &&
(resources->irqs->valid_INT &
(0x01 << ((temp_byte + resources->irqs->barber_pole - 1) & 0x03)))) {
- // We have to share with something already set up
+ /* We have to share with something already set up */
IRQ = resources->irqs->interrupt[(temp_byte +
resources->irqs->barber_pole - 1) & 0x03];
} else {
- // Program IRQ based on card type
+ /* Program IRQ based on card type */
rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code);
if (class_code == PCI_BASE_CLASS_STORAGE) {
}
}
- // IRQ Line
+ /* IRQ Line */
rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_INTERRUPT_LINE, IRQ);
}
if (!behind_bridge) {
rc = cpqhp_set_irq(func->bus, func->device, temp_byte + 0x09, IRQ);
if (rc)
- return(1);
+ return 1;
} else {
- //TBD - this code may also belong in the other clause of this If statement
+ /* TBD - this code may also belong in the other clause
+ * of this If statement */
resources->irqs->interrupt[(temp_byte + resources->irqs->barber_pole - 1) & 0x03] = IRQ;
resources->irqs->valid_INT |= 0x01 << (temp_byte + resources->irqs->barber_pole - 1) & 0x03;
}
- // Latency Timer
+ /* Latency Timer */
temp_byte = 0x40;
- rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_LATENCY_TIMER, temp_byte);
+ rc = pci_bus_write_config_byte(pci_bus, devfn,
+ PCI_LATENCY_TIMER, temp_byte);
- // Cache Line size
+ /* Cache Line size */
temp_byte = 0x08;
- rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_CACHE_LINE_SIZE, temp_byte);
+ rc = pci_bus_write_config_byte(pci_bus, devfn,
+ PCI_CACHE_LINE_SIZE, temp_byte);
- // disable ROM base Address
+ /* disable ROM base Address */
temp_dword = 0x00L;
- rc = pci_bus_write_config_word (pci_bus, devfn, PCI_ROM_ADDRESS, temp_dword);
-
- // enable card
- temp_word = 0x0157; // = PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE | PCI_COMMAND_PARITY | PCI_COMMAND_SERR
- rc = pci_bus_write_config_word (pci_bus, devfn, PCI_COMMAND, temp_word);
- } // End of Not-A-Bridge else
- else {
- // It's some strange type of PCI adapter (Cardbus?)
- return(DEVICE_TYPE_NOT_SUPPORTED);
+ rc = pci_bus_write_config_word(pci_bus, devfn,
+ PCI_ROM_ADDRESS, temp_dword);
+
+ /* enable card */
+ temp_word = 0x0157; /* = PCI_COMMAND_IO |
+ * PCI_COMMAND_MEMORY |
+ * PCI_COMMAND_MASTER |
+ * PCI_COMMAND_INVALIDATE |
+ * PCI_COMMAND_PARITY |
+ * PCI_COMMAND_SERR */
+ rc = pci_bus_write_config_word (pci_bus, devfn,
+ PCI_COMMAND, temp_word);
+ } else { /* End of Not-A-Bridge else */
+ /* It's some strange type of PCI adapter (Cardbus?) */
+ return DEVICE_TYPE_NOT_SUPPORTED;
}
func->configured = 1;
return 0;
-}
+free_and_out:
+ cpqhp_destroy_resource_list (&temp_resources);
+ return_resource(&(resources-> bus_head), hold_bus_node);
+ return_resource(&(resources-> io_head), hold_IO_node);
+ return_resource(&(resources-> mem_head), hold_mem_node);
+ return_resource(&(resources-> p_mem_head), hold_p_mem_node);
+ return rc;
+}
git://git.onelab.eu / linux-2.6.git / blobdiff