u8 configured;
u8 switch_save;
u8 presence_save;
- u32 base_length[0x06];
- u8 base_type[0x06];
u16 reserved2;
u32 config_space[0x20];
- struct pci_resource *mem_head;
- struct pci_resource *p_mem_head;
- struct pci_resource *io_head;
- struct pci_resource *bus_head;
struct pci_dev* pci_dev;
};
struct list_head slot_list;
};
-struct pci_resource {
- struct pci_resource * next;
- u32 base;
- u32 length;
-};
-
struct event_info {
u32 event_type;
u8 hp_slot;
void *hpc_ctlr_handle; /* HPC controller handle */
int num_slots; /* Number of slots on ctlr */
int slot_num_inc; /* 1 or -1 */
- struct pci_resource *mem_head;
- struct pci_resource *p_mem_head;
- struct pci_resource *io_head;
- struct pci_resource *bus_head;
struct pci_dev *pci_dev;
struct pci_bus *pci_bus;
struct event_info event_queue[10];
u8 cap_base;
};
-struct irq_mapping {
- u8 barber_pole;
- u8 valid_INT;
- u8 interrupt[4];
-};
-
-struct resource_lists {
- struct pci_resource *mem_head;
- struct pci_resource *p_mem_head;
- struct pci_resource *io_head;
- struct pci_resource *bus_head;
- struct irq_mapping *irqs;
-};
-
#define INT_BUTTON_IGNORE 0
#define INT_PRESENCE_ON 1
#define INT_PRESENCE_OFF 2
#define msg_HPC_rev_error "Unsupported revision of the PCI hot plug controller found.\n"
#define msg_HPC_non_pcie "The PCI hot plug controller is not supported by this driver.\n"
#define msg_HPC_not_supported "This system is not supported by this version of pciephd module. Upgrade to a newer version of pciehpd\n"
-#define msg_unable_to_save "Unable to store PCI hot plug add resource information. This system must be rebooted before adding any PCI devices.\n"
#define msg_button_on "PCI slot #%d - powering on due to button press.\n"
#define msg_button_off "PCI slot #%d - powering off due to button press.\n"
#define msg_button_cancel "PCI slot #%d - action canceled due to button press.\n"
#define msg_button_ignore "PCI slot #%d - button press ignored. (action in progress...)\n"
/* controller functions */
-extern int pciehprm_find_available_resources (struct controller *ctrl);
extern int pciehp_event_start_thread (void);
extern void pciehp_event_stop_thread (void);
extern struct pci_func *pciehp_slot_create (unsigned char busnumber);
extern u8 pciehp_handle_power_fault (u8 hp_slot, void *inst_id);
/* extern void long_delay (int delay); */
-/* resource functions */
-extern int pciehp_resource_sort_and_combine (struct pci_resource **head);
-
/* pci functions */
extern int pciehp_set_irq (u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num);
/*extern int pciehp_get_bus_dev (struct controller *ctrl, u8 *bus_num, u8 *dev_num, struct slot *slot);*/
extern int pciehp_save_config (struct controller *ctrl, int busnumber, int num_ctlr_slots, int first_device_num);
-extern int pciehp_save_used_resources (struct controller *ctrl, struct pci_func * func, int flag);
extern int pciehp_save_slot_config (struct controller *ctrl, struct pci_func * new_slot);
-extern void pciehp_destroy_board_resources (struct pci_func * func);
-extern int pciehp_return_board_resources (struct pci_func * func, struct resource_lists * resources);
-extern void pciehp_destroy_resource_list (struct resource_lists * resources);
-extern int pciehp_configure_device (struct controller* ctrl, struct pci_func* func);
+extern int pciehp_configure_device (struct slot *ctrl);
extern int pciehp_unconfigure_device (struct pci_func* func);
return retval;
}
-/* Puts node back in the resource list pointed to by head */
-static inline void return_resource(struct pci_resource **head, struct pci_resource *node)
-{
- if (!node || !head)
- return;
- node->next = *head;
- *head = node;
-}
-
#define SLOT_NAME_SIZE 10
static inline void make_slot_name(char *buffer, int buffer_size, struct slot *slot)
goto err_out_free_ctrl_bus;
}
- /* Get IO, memory, and IRQ resources for new devices */
- rc = pciehprm_find_available_resources(ctrl);
- ctrl->add_support = !rc;
+ ctrl->add_support = 1;
- if (rc) {
- dbg("pciehprm_find_available_resources = %#x\n", rc);
- err("unable to locate PCI configuration resources for hot plug add.\n");
- goto err_out_free_ctrl_bus;
- }
-
/* Setup the slot information structures */
rc = init_slots(ctrl);
if (rc) {
return retval;
}
-static inline void __exit
-free_pciehp_res(struct pci_resource *res)
-{
- struct pci_resource *tres;
-
- while (res) {
- tres = res;
- res = res->next;
- kfree(tres);
- }
-}
-
static void __exit unload_pciehpd(void)
{
struct pci_func *next;
while (ctrl) {
cleanup_slots(ctrl);
- free_pciehp_res(ctrl->io_head);
- free_pciehp_res(ctrl->mem_head);
- free_pciehp_res(ctrl->p_mem_head);
- free_pciehp_res(ctrl->bus_head);
-
kfree (ctrl->pci_bus);
ctrl->hpc_ops->release_ctlr(ctrl);
for (loop = 0; loop < 256; loop++) {
next = pciehp_slot_list[loop];
while (next != NULL) {
- free_pciehp_res(next->io_head);
- free_pciehp_res(next->mem_head);
- free_pciehp_res(next->p_mem_head);
- free_pciehp_res(next->bus_head);
-
TempSlot = next;
next = next->next;
kfree(TempSlot);
if (retval) {
pciehprm_cleanup();
pciehp_event_stop_thread();
- } else
- pciehprm_print_pirt();
+ };
return retval;
}
#include "pciehp.h"
#include "pciehprm.h"
-static u32 configure_new_device(struct controller *ctrl, struct pci_func *func,
- u8 behind_bridge, struct resource_lists *resources, u8 bridge_bus, u8 bridge_dev);
-static int configure_new_function( struct controller *ctrl, struct pci_func *func,
- u8 behind_bridge, struct resource_lists *resources, u8 bridge_bus, u8 bridge_dev);
static void interrupt_event_handler(struct controller *ctrl);
static struct semaphore event_semaphore; /* mutex for process loop (up if something to process) */
return rc;
}
-
-/**
- * sort_by_size: sort nodes by their length, smallest first.
- *
- * @head: list to sort
- */
-static int sort_by_size(struct pci_resource **head)
-{
- struct pci_resource *current_res;
- struct pci_resource *next_res;
- int out_of_order = 1;
-
- if (!(*head))
- return 1;
-
- if (!((*head)->next))
- return 0;
-
- while (out_of_order) {
- out_of_order = 0;
-
- /* Special case for swapping list head */
- if (((*head)->next) &&
- ((*head)->length > (*head)->next->length)) {
- out_of_order++;
- current_res = *head;
- *head = (*head)->next;
- current_res->next = (*head)->next;
- (*head)->next = current_res;
- }
-
- current_res = *head;
-
- while (current_res->next && current_res->next->next) {
- if (current_res->next->length > current_res->next->next->length) {
- out_of_order++;
- next_res = current_res->next;
- current_res->next = current_res->next->next;
- current_res = current_res->next;
- next_res->next = current_res->next;
- current_res->next = next_res;
- } else
- current_res = current_res->next;
- }
- } /* End of out_of_order loop */
-
- return 0;
-}
-
-
-/*
- * sort_by_max_size
- *
- * Sorts nodes on the list by their length.
- * Largest first.
- *
- */
-static int sort_by_max_size(struct pci_resource **head)
-{
- struct pci_resource *current_res;
- struct pci_resource *next_res;
- int out_of_order = 1;
-
- if (!(*head))
- return 1;
-
- if (!((*head)->next))
- return 0;
-
- while (out_of_order) {
- out_of_order = 0;
-
- /* Special case for swapping list head */
- if (((*head)->next) &&
- ((*head)->length < (*head)->next->length)) {
- out_of_order++;
- current_res = *head;
- *head = (*head)->next;
- current_res->next = (*head)->next;
- (*head)->next = current_res;
- }
-
- current_res = *head;
-
- while (current_res->next && current_res->next->next) {
- if (current_res->next->length < current_res->next->next->length) {
- out_of_order++;
- next_res = current_res->next;
- current_res->next = current_res->next->next;
- current_res = current_res->next;
- next_res->next = current_res->next;
- current_res->next = next_res;
- } else
- current_res = current_res->next;
- }
- } /* End of out_of_order loop */
-
- return 0;
-}
-
-
-/**
- * do_pre_bridge_resource_split: return one unused resource node
- * @head: list to scan
- *
- */
-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;
- struct pci_resource *split_node;
- u32 rc;
- u32 temp_dword;
- dbg("do_pre_bridge_resource_split\n");
-
- if (!(*head) || !(*orig_head))
- return NULL;
-
- rc = pciehp_resource_sort_and_combine(head);
-
- if (rc)
- return NULL;
-
- if ((*head)->base != (*orig_head)->base)
- return NULL;
-
- if ((*head)->length == (*orig_head)->length)
- 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
- */
- 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 = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
-
- if (!split_node)
- return NULL;
-
- temp_dword = (node->length | (alignment-1)) + 1 - alignment;
-
- split_node->base = node->base;
- split_node->length = temp_dword;
-
- node->length -= temp_dword;
- node->base += split_node->length;
-
- /* Put it in the list */
- *head = split_node;
- split_node->next = node;
- }
-
- if (node->length < alignment)
- return NULL;
-
- /* Now unlink it */
- if (*head == node) {
- *head = node->next;
- } else {
- prevnode = *head;
- while (prevnode->next != node)
- prevnode = prevnode->next;
-
- prevnode->next = node->next;
- }
- node->next = NULL;
-
- return node;
-}
-
-
-/**
- * do_bridge_resource_split: return one unused resource node
- * @head: list to scan
- *
- */
-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 = pciehp_resource_sort_and_combine(head);
-
- if (rc)
- return NULL;
-
- node = *head;
-
- while (node->next) {
- prevnode = node;
- node = node->next;
- kfree(prevnode);
- }
-
- if (node->length < alignment) {
- kfree(node);
- return NULL;
- }
-
- if (node->base & (alignment - 1)) {
- /* 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;
- }
-
- 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;
- }
-
- return node;
-}
-
-
-/*
- * get_io_resource
- *
- * 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.
- *
- * size must be a power of two.
- */
-static struct pci_resource *get_io_resource(struct pci_resource **head, u32 size)
-{
- struct pci_resource *prevnode;
- struct pci_resource *node;
- struct pci_resource *split_node = NULL;
- u32 temp_dword;
-
- if (!(*head))
- return NULL;
-
- if ( pciehp_resource_sort_and_combine(head) )
- return NULL;
-
- if ( sort_by_size(head) )
- 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 */
- temp_dword = (node->base | (size-1)) + 1;
-
- /*/ Short circuit if adjusted size is too small */
- if ((node->length - (temp_dword - node->base)) < size)
- continue;
-
- split_node = kmalloc(sizeof(struct pci_resource),
- GFP_KERNEL);
-
- if (!split_node)
- 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 */
-
- /* 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 = kmalloc(sizeof(struct pci_resource),
- GFP_KERNEL);
-
- if (!split_node)
- return NULL;
-
- split_node->base = node->base + size;
- split_node->length = node->length - size;
- node->length = size;
-
- /* Put it in the list */
- split_node->next = node->next;
- node->next = split_node;
- } /* End of too big on top end */
-
- /* 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 (*head == node) {
- *head = node->next;
- } else {
- prevnode = *head;
- while (prevnode->next != node)
- prevnode = prevnode->next;
-
- prevnode->next = node->next;
- }
- node->next = NULL;
- /* Stop looping */
- break;
- }
-
- return node;
-}
-
-
-/*
- * get_max_resource
- *
- * 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.
- * J.I. modified to put max size limits of; 64M->32M->16M->8M->4M->1M
- * This is needed to avoid allocating entire ACPI _CRS res to one child bridge/slot.
- */
-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;
- u32 max_size[] = { 0x4000000, 0x2000000, 0x1000000, 0x0800000, 0x0400000, 0x0200000, 0x0100000, 0x00 };
- int i;
-
- if (!(*head))
- return NULL;
-
- if (pciehp_resource_sort_and_combine(head))
- return NULL;
-
- if (sort_by_max_size(head))
- return NULL;
-
- 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 */
- temp_dword = (max->base | (size-1)) + 1;
-
- /* Short circuit if adjusted size is too small */
- if ((max->length - (temp_dword - max->base)) < size)
- continue;
-
- split_node = kmalloc(sizeof(struct pci_resource),
- GFP_KERNEL);
-
- if (!split_node)
- 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 = kmalloc(sizeof(struct pci_resource),
- GFP_KERNEL);
-
- if (!split_node)
- 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 */
- if (max->length < size)
- continue;
-
- for ( i = 0; max_size[i] > size; i++) {
- if (max->length > max_size[i]) {
- split_node = kmalloc(sizeof(struct pci_resource),
- GFP_KERNEL);
- if (!split_node)
- break; /* return NULL; */
- split_node->base = max->base + max_size[i];
- split_node->length = max->length - max_size[i];
- max->length = max_size[i];
- /* Put it next in the list */
- split_node->next = max->next;
- max->next = split_node;
- break;
- }
- }
-
- /* Now take it out of the list */
- temp = (struct pci_resource*) *head;
- if (temp == max) {
- *head = max->next;
- } else {
- while (temp && temp->next != max) {
- temp = temp->next;
- }
-
- temp->next = max->next;
- }
-
- max->next = NULL;
- return max;
- }
-
- /* If we get here, we couldn't find one */
- return NULL;
-}
-
-
-/*
- * get_resource
- *
- * 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)
-{
- struct pci_resource *prevnode;
- struct pci_resource *node;
- struct pci_resource *split_node;
- u32 temp_dword;
-
- if (!(*head))
- return NULL;
-
- if ( pciehp_resource_sort_and_combine(head) )
- return NULL;
-
- if ( sort_by_size(head) )
- return NULL;
-
- for (node = *head; node; node = node->next) {
- dbg("%s: req_size =0x%x node=%p, base=0x%x, length=0x%x\n",
- __FUNCTION__, size, node, node->base, node->length);
- if (node->length < size)
- continue;
-
- 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 */
- temp_dword = (node->base | (size-1)) + 1;
-
- /* Short circuit if adjusted size is too small */
- if ((node->length - (temp_dword - node->base)) < size)
- continue;
-
- split_node = kmalloc(sizeof(struct pci_resource),
- GFP_KERNEL);
-
- if (!split_node)
- 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 */
-
- /* 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 = kmalloc(sizeof(struct pci_resource),
- GFP_KERNEL);
-
- if (!split_node)
- return NULL;
-
- split_node->base = node->base + size;
- split_node->length = node->length - size;
- node->length = size;
-
- /* Put it in the list */
- split_node->next = node->next;
- node->next = split_node;
- } /* 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 (*head == node) {
- *head = node->next;
- } else {
- prevnode = *head;
- while (prevnode->next != node)
- prevnode = prevnode->next;
-
- prevnode->next = node->next;
- }
- node->next = NULL;
- /* Stop looping */
- break;
- }
- return node;
-}
-
-
-/*
- * pciehp_resource_sort_and_combine
- *
- * Sorts all of the nodes in the list in ascending order by
- * their base addresses. Also does garbage collection by
- * combining adjacent nodes.
- *
- * returns 0 if success
- */
-int pciehp_resource_sort_and_combine(struct pci_resource **head)
-{
- struct pci_resource *node1;
- struct pci_resource *node2;
- int out_of_order = 1;
-
- dbg("%s: head = %p, *head = %p\n", __FUNCTION__, head, *head);
-
- if (!(*head))
- return 1;
-
- dbg("*head->next = %p\n",(*head)->next);
-
- if (!(*head)->next)
- 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 */
- if (((*head)->next) &&
- ((*head)->base > (*head)->next->base)) {
- node1 = *head;
- (*head) = (*head)->next;
- node1->next = (*head)->next;
- (*head)->next = node1;
- out_of_order++;
- }
-
- node1 = (*head);
-
- while (node1->next && node1->next->next) {
- if (node1->next->base > node1->next->next->base) {
- out_of_order++;
- node2 = node1->next;
- node1->next = node1->next->next;
- node1 = node1->next;
- node2->next = node1->next;
- node1->next = node2;
- } else
- node1 = node1->next;
- }
- } /* End of out_of_order loop */
-
- node1 = *head;
-
- while (node1 && node1->next) {
- if ((node1->base + node1->length) == node1->next->base) {
- /* Combine */
- dbg("8..\n");
- node1->length += node1->next->length;
- node2 = node1->next;
- node1->next = node1->next->next;
- kfree(node2);
- } else
- node1 = node1->next;
- }
-
- return 0;
-}
-
-
/**
* pciehp_slot_create - Creates a node and adds it to the proper bus.
* @busnumber - bus where new node is to be located
if (next == old_slot) {
pciehp_slot_list[old_slot->bus] = old_slot->next;
- pciehp_destroy_board_resources(old_slot);
kfree(old_slot);
return 0;
}
if (next->next == old_slot) {
next->next = old_slot->next;
- pciehp_destroy_board_resources(old_slot);
kfree(old_slot);
return 0;
} else
static u32 board_added(struct pci_func * func, struct controller * ctrl)
{
u8 hp_slot;
- int index;
u32 temp_register = 0xFFFFFFFF;
u32 rc = 0;
- struct pci_func *new_func = NULL;
struct slot *p_slot;
- struct resource_lists res_lists;
p_slot = pciehp_find_slot(ctrl, func->device);
hp_slot = func->device - ctrl->slot_device_offset;
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 */
- rc = pci_bus_read_config_dword (ctrl->pci_dev->subordinate, PCI_DEVFN(func->device, func->function),
- PCI_VENDOR_ID, &temp_register);
- dbg("%s: pci_bus_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 */
- 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. */
- rc = NO_ADAPTER_PRESENT;
+ goto err_exit;
}
- /* 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;
- res_lists.bus_head = ctrl->bus_head;
- res_lists.irqs = NULL;
-
- rc = configure_new_device(ctrl, func, 0, &res_lists, 0, 0);
- dbg("%s: back from configure_new_device\n", __FUNCTION__);
-
- ctrl->io_head = res_lists.io_head;
- ctrl->mem_head = res_lists.mem_head;
- ctrl->p_mem_head = res_lists.p_mem_head;
- ctrl->bus_head = res_lists.bus_head;
-
- pciehp_resource_sort_and_combine(&(ctrl->mem_head));
- pciehp_resource_sort_and_combine(&(ctrl->p_mem_head));
- pciehp_resource_sort_and_combine(&(ctrl->io_head));
- pciehp_resource_sort_and_combine(&(ctrl->bus_head));
+ rc = pciehp_configure_device(p_slot);
+ if (rc) {
+ err("Cannot add device 0x%x:%x\n", p_slot->bus,
+ p_slot->device);
+ goto err_exit;
+ }
- if (rc) {
- set_slot_off(ctrl, p_slot);
- return rc;
- }
- pciehp_save_slot_config(ctrl, func);
+ pciehp_save_slot_config(ctrl, func);
+ func->status = 0;
+ func->switch_save = 0x10;
+ func->is_a_board = 0x01;
- func->status = 0;
- func->switch_save = 0x10;
- func->is_a_board = 0x01;
+ /*
+ * Some PCI Express root ports require fixup after hot-plug operation.
+ */
+ if (pcie_mch_quirk)
+ pci_fixup_device(pci_fixup_final, ctrl->pci_dev);
+ if (PWR_LED(ctrl->ctrlcap)) {
+ /* Wait for exclusive access to hardware */
+ down(&ctrl->crit_sect);
- /* next, we will instantiate the linux pci_dev structures
- * (with appropriate driver notification, if already present)
- */
- index = 0;
- do {
- new_func = pciehp_slot_find(ctrl->slot_bus, func->device, index++);
- if (new_func && !new_func->pci_dev) {
- dbg("%s:call pci_hp_configure_dev, func %x\n",
- __FUNCTION__, index);
- pciehp_configure_device(ctrl, new_func);
- }
- } while (new_func);
-
- /*
- * Some PCI Express root ports require fixup after hot-plug operation.
- */
- if (pcie_mch_quirk)
- pci_fixup_device(pci_fixup_final, ctrl->pci_dev);
-
- if (PWR_LED(ctrl->ctrlcap)) {
- /* Wait for exclusive access to hardware */
- down(&ctrl->crit_sect);
-
- p_slot->hpc_ops->green_led_on(p_slot);
+ p_slot->hpc_ops->green_led_on(p_slot);
- /* Wait for the command to complete */
- wait_for_ctrl_irq (ctrl);
+ /* Wait for the command to complete */
+ wait_for_ctrl_irq (ctrl);
- /* Done with exclusive hardware access */
- up(&ctrl->crit_sect);
- }
- } else {
- set_slot_off(ctrl, p_slot);
- return -1;
- }
+ /* Done with exclusive hardware access */
+ up(&ctrl->crit_sect);
+ }
return 0;
+
+err_exit:
+ set_slot_off(ctrl, p_slot);
+ return -1;
}
*/
static u32 remove_board(struct pci_func *func, struct controller *ctrl)
{
- int index;
- u8 skip = 0;
u8 device;
u8 hp_slot;
u32 rc;
- struct resource_lists res_lists;
- struct pci_func *temp_func;
struct slot *p_slot;
if (func == NULL)
dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot);
- if ((ctrl->add_support) &&
- !(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.
- */
- index = 0;
-
- temp_func = func;
-
- while ((temp_func = pciehp_slot_find(temp_func->bus, temp_func->device, index++))) {
- if (temp_func->bus_head || temp_func->mem_head
- || temp_func->p_mem_head || temp_func->io_head) {
- skip = 1;
- break;
- }
- }
-
- if (!skip)
- rc = pciehp_save_used_resources(ctrl, func, DISABLE_CARD);
- }
/* Change status to shutdown */
if (func->is_a_board)
func->status = 0x01;
if (ctrl->add_support) {
while (func) {
- res_lists.io_head = ctrl->io_head;
- res_lists.mem_head = ctrl->mem_head;
- res_lists.p_mem_head = ctrl->p_mem_head;
- res_lists.bus_head = ctrl->bus_head;
-
- dbg("Returning resources to ctlr lists for (B/D/F) = (%#x/%#x/%#x)\n",
- func->bus, func->device, func->function);
-
- pciehp_return_board_resources(func, &res_lists);
-
- ctrl->io_head = res_lists.io_head;
- ctrl->mem_head = res_lists.mem_head;
- ctrl->p_mem_head = res_lists.p_mem_head;
- ctrl->bus_head = res_lists.bus_head;
-
- pciehp_resource_sort_and_combine(&(ctrl->mem_head));
- pciehp_resource_sort_and_combine(&(ctrl->p_mem_head));
- pciehp_resource_sort_and_combine(&(ctrl->io_head));
- pciehp_resource_sort_and_combine(&(ctrl->bus_head));
-
if (is_bridge(func)) {
dbg("PCI Bridge Hot-Remove s:b:d:f(%02x:%02x:%02x:%02x)\n",
ctrl->seg, func->bus, func->device, func->function);
return rc;
}
-
-/**
- * configure_new_device - Configures the PCI header information of one board.
- *
- * @ctrl: pointer to controller structure
- * @func: pointer to function structure
- * @behind_bridge: 1 if this is a recursive call, 0 if not
- * @resources: pointer to set of resource lists
- *
- * Returns 0 if success
- *
- */
-static u32 configure_new_device(struct controller * ctrl, struct pci_func * func,
- u8 behind_bridge, struct resource_lists * resources, u8 bridge_bus, u8 bridge_dev)
-{
- u8 temp_byte, function, max_functions, stop_it;
- int rc;
- u32 ID;
- struct pci_func *new_slot;
- struct pci_bus lpci_bus, *pci_bus;
- int index;
-
- new_slot = func;
-
- dbg("%s\n", __FUNCTION__);
- memcpy(&lpci_bus, ctrl->pci_dev->subordinate, sizeof(lpci_bus));
- pci_bus = &lpci_bus;
- pci_bus->number = func->bus;
-
- /* Check for Multi-function device */
- rc = pci_bus_read_config_byte(pci_bus, PCI_DEVFN(func->device, func->function), 0x0E, &temp_byte);
- if (rc) {
- dbg("%s: rc = %d\n", __FUNCTION__, rc);
- return rc;
- }
-
- if (temp_byte & 0x80) /* Multi-function device */
- max_functions = 8;
- else
- max_functions = 1;
-
- function = 0;
-
- do {
- rc = configure_new_function(ctrl, new_slot, behind_bridge,
- resources, bridge_bus, bridge_dev);
-
- if (rc) {
- dbg("configure_new_function failed: %d\n", rc);
- index = 0;
-
- while (new_slot) {
- new_slot = pciehp_slot_find(new_slot->bus,
- new_slot->device, index++);
-
- if (new_slot)
- pciehp_return_board_resources(new_slot,
- resources);
- }
-
- return rc;
- }
-
- function++;
-
- stop_it = 0;
-
- /* 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(pci_bus, PCI_DEVFN(func->device, function), 0x00, &ID);
-
- if (ID == 0xFFFFFFFF) { /* There's nothing there. */
- function++;
- } else { /* There's something there */
- /* Setup slot structure. */
- new_slot = pciehp_slot_create(func->bus);
-
- if (new_slot == NULL) {
- /* Out of memory */
- return 1;
- }
-
- new_slot->bus = func->bus;
- new_slot->device = func->device;
- new_slot->function = function;
- new_slot->is_a_board = 1;
- new_slot->status = 0;
-
- stop_it++;
- }
- }
-
- } while (function < max_functions);
- dbg("returning from %s\n", __FUNCTION__);
-
- return 0;
-}
-
-/*
- * Configuration logic that involves the hotplug data structures and
- * their bookkeeping
- */
-
-/**
- * configure_bridge: fill bridge's registers, either configure or disable it.
- */
-static int
-configure_bridge(struct pci_bus *pci_bus, unsigned int devfn,
- struct pci_resource *mem_node,
- struct pci_resource **hold_mem_node,
- int base_addr, int limit_addr)
-{
- u16 temp_word;
- u32 rc;
-
- if (mem_node) {
- memcpy(*hold_mem_node, mem_node, sizeof(struct pci_resource));
- mem_node->next = NULL;
-
- /* set Mem base and Limit registers */
- RES_CHECK(mem_node->base, 16);
- temp_word = (u16)(mem_node->base >> 16);
- rc = pci_bus_write_config_word(pci_bus, devfn, base_addr, temp_word);
-
- RES_CHECK(mem_node->base + mem_node->length - 1, 16);
- temp_word = (u16)((mem_node->base + mem_node->length - 1) >> 16);
- rc = pci_bus_write_config_word(pci_bus, devfn, limit_addr, temp_word);
- } else {
- temp_word = 0xFFFF;
- rc = pci_bus_write_config_word(pci_bus, devfn, base_addr, temp_word);
-
- temp_word = 0x0000;
- rc = pci_bus_write_config_word(pci_bus, devfn, limit_addr, temp_word);
-
- kfree(*hold_mem_node);
- *hold_mem_node = NULL;
- }
- return rc;
-}
-
-static int
-configure_new_bridge(struct controller *ctrl, struct pci_func *func,
- u8 behind_bridge, struct resource_lists *resources,
- struct pci_bus *pci_bus)
-{
- int cloop;
- u8 temp_byte;
- u8 device;
- u16 temp_word;
- u32 rc;
- u32 ID;
- unsigned int devfn;
- struct pci_resource *mem_node;
- struct pci_resource *p_mem_node;
- struct pci_resource *io_node;
- struct pci_resource *bus_node;
- struct pci_resource *hold_mem_node;
- struct pci_resource *hold_p_mem_node;
- struct pci_resource *hold_IO_node;
- struct pci_resource *hold_bus_node;
- struct irq_mapping irqs;
- struct pci_func *new_slot;
- struct resource_lists temp_resources;
-
- devfn = PCI_DEVFN(func->device, func->function);
-
- /* set Primary bus */
- dbg("set Primary bus = 0x%x\n", 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 */
- bus_node = get_max_resource(&resources->bus_head, 1L);
-
- /* If we don't have any busses to allocate, we can't continue */
- if (!bus_node) {
- err("Got NO bus resource to use\n");
- return -ENOMEM;
- }
- dbg("Got ranges of buses to use: base:len=0x%x:%x\n", bus_node->base, bus_node->length);
-
- /* set Secondary bus */
- temp_byte = (u8)bus_node->base;
- dbg("set Secondary bus = 0x%x\n", temp_byte);
- rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SECONDARY_BUS, temp_byte);
- if (rc)
- return rc;
-
- /* set subordinate bus */
- temp_byte = (u8)(bus_node->base + bus_node->length - 1);
- dbg("set subordinate bus = 0x%x\n", temp_byte);
- rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte);
- if (rc)
- return rc;
-
- /* Set HP parameters (Cache Line Size, Latency Timer) */
- rc = pciehprm_set_hpp(ctrl, func, PCI_HEADER_TYPE_BRIDGE);
- if (rc)
- return rc;
-
- /* Setup the IO, memory, and prefetchable windows */
-
- io_node = get_max_resource(&(resources->io_head), 0x1000L);
- if (io_node) {
- dbg("io_node(base, len, next) (%x, %x, %p)\n", io_node->base,
- io_node->length, io_node->next);
- }
-
- mem_node = get_max_resource(&(resources->mem_head), 0x100000L);
- if (mem_node) {
- dbg("mem_node(base, len, next) (%x, %x, %p)\n", mem_node->base,
- mem_node->length, mem_node->next);
- }
-
- if (resources->p_mem_head)
- p_mem_node = get_max_resource(&(resources->p_mem_head), 0x100000L);
- else {
- /*
- * In some platform implementation, MEM and PMEM are not
- * distinguished, and hence ACPI _CRS has only MEM entries
- * for both MEM and PMEM.
- */
- dbg("using MEM for PMEM\n");
- p_mem_node = get_max_resource(&(resources->mem_head), 0x100000L);
- }
- if (p_mem_node) {
- dbg("p_mem_node(base, len, next) (%x, %x, %p)\n", p_mem_node->base,
- p_mem_node->length, p_mem_node->next);
- }
-
- /* set up the IRQ info */
- if (!resources->irqs) {
- irqs.barber_pole = 0;
- irqs.interrupt[0] = 0;
- irqs.interrupt[1] = 0;
- irqs.interrupt[2] = 0;
- irqs.interrupt[3] = 0;
- irqs.valid_INT = 0;
- } else {
- irqs.barber_pole = resources->irqs->barber_pole;
- irqs.interrupt[0] = resources->irqs->interrupt[0];
- irqs.interrupt[1] = resources->irqs->interrupt[1];
- irqs.interrupt[2] = resources->irqs->interrupt[2];
- irqs.interrupt[3] = resources->irqs->interrupt[3];
- irqs.valid_INT = resources->irqs->valid_INT;
- }
-
- /* 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 = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
- hold_IO_node = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
- hold_mem_node = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
- hold_p_mem_node = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
-
- if (!hold_bus_node || !hold_IO_node || !hold_mem_node || !hold_p_mem_node) {
- 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->base += 1;
- 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 (io_node) {
- memcpy(hold_IO_node, io_node, sizeof(struct pci_resource));
- io_node->next = NULL;
-
- /* set IO base and Limit registers */
- RES_CHECK(io_node->base, 8);
- temp_byte = (u8)(io_node->base >> 8);
- rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_BASE, temp_byte);
-
- RES_CHECK(io_node->base + io_node->length - 1, 8);
- temp_byte = (u8)((io_node->base + io_node->length - 1) >> 8);
- 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.
- */
- rc = configure_bridge(pci_bus, devfn, mem_node, &hold_mem_node,
- PCI_MEMORY_BASE, PCI_MEMORY_LIMIT);
-
- /* 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.
- */
- rc = configure_bridge(pci_bus, devfn, p_mem_node, &hold_p_mem_node,
- PCI_PREF_MEMORY_BASE, PCI_PREF_MEMORY_LIMIT);
-
- /* Adjust this to compensate for extra adjustment in first loop */
- irqs.barber_pole--;
-
- rc = 0;
-
- /* Here we actually find the devices and configure them */
- for (device = 0; (device <= 0x1F) && !rc; device++) {
- irqs.barber_pole = (irqs.barber_pole + 1) & 0x03;
-
- ID = 0xFFFFFFFF;
- pci_bus->number = hold_bus_node->base;
- pci_bus_read_config_dword (pci_bus, PCI_DEVFN(device, 0), PCI_VENDOR_ID, &ID);
- pci_bus->number = func->bus;
-
- if (ID != 0xFFFFFFFF) { /* device Present */
- /* Setup slot structure. */
- new_slot = pciehp_slot_create(hold_bus_node->base);
-
- if (new_slot == NULL) {
- /* Out of memory */
- rc = -ENOMEM;
- continue;
- }
-
- new_slot->bus = hold_bus_node->base;
- new_slot->device = device;
- new_slot->function = 0;
- new_slot->is_a_board = 1;
- new_slot->status = 0;
-
- rc = configure_new_device(ctrl, new_slot, 1,
- &temp_resources, func->bus,
- func->device);
- dbg("configure_new_device rc=0x%x\n",rc);
- } /* End of IF (device in slot?) */
- } /* End of FOR loop */
-
- if (rc) {
- pciehp_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);
- }
-
- /* 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[2] = irqs.interrupt[2];
- 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 */
- for (cloop = 0; cloop < 4; cloop++) {
- if (irqs.valid_INT & (0x01 << cloop)) {
- rc = pciehp_set_irq(func->bus, func->device,
- 0x0A + cloop, irqs.interrupt[cloop]);
- if (rc) {
- pciehp_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;
- }
- }
- } /* end of for loop */
- }
-
- /* 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;
-
- hold_bus_node->next = func->bus_head;
- func->bus_head = hold_bus_node;
-
- temp_byte = (u8)(temp_resources.bus_head->base - 1);
-
- /* set subordinate bus */
- dbg("re-set subordinate bus = 0x%x\n", temp_byte);
- rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte);
-
- if (temp_resources.bus_head->length == 0) {
- kfree(temp_resources.bus_head);
- temp_resources.bus_head = NULL;
- } else {
- dbg("return bus res of b:d(0x%x:%x) base:len(0x%x:%x)\n",
- func->bus, func->device, temp_resources.bus_head->base, temp_resources.bus_head->length);
- return_resource(&(resources->bus_head), temp_resources.bus_head);
- }
- }
-
- /* 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 */
- if (io_node) {
- hold_IO_node->base = io_node->base + io_node->length;
-
- RES_CHECK(hold_IO_node->base, 8);
- temp_byte = (u8)((hold_IO_node->base) >> 8);
- rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_BASE, temp_byte);
-
- return_resource(&(resources->io_head), io_node);
- }
-
- io_node = do_bridge_resource_split(&(temp_resources.io_head), 0x1000);
-
- /* Check if we were able to split something off */
- if (io_node) {
- /* 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 (hold_IO_node->length) {
- hold_IO_node->next = func->io_head;
- func->io_head = hold_IO_node;
-
- RES_CHECK(io_node->base - 1, 8);
- temp_byte = (u8)((io_node->base - 1) >> 8);
- rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_LIMIT, temp_byte);
-
- return_resource(&(resources->io_head), io_node);
- } else {
- /* it doesn't need any IO */
- temp_byte = 0x00;
- rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_LIMIT, temp_byte);
-
- return_resource(&(resources->io_head), io_node);
- kfree(hold_IO_node);
- }
- } else {
- /* 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 */
- 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 (hold_mem_node && temp_resources.mem_head) {
- mem_node = do_pre_bridge_resource_split(&(temp_resources.mem_head), &hold_mem_node, 0x100000L);
-
- /* Check if we were able to split something off */
- if (mem_node) {
- hold_mem_node->base = mem_node->base + mem_node->length;
-
- RES_CHECK(hold_mem_node->base, 16);
- temp_word = (u16)((hold_mem_node->base) >> 16);
- rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_BASE, temp_word);
-
- return_resource(&(resources->mem_head), mem_node);
- }
-
- mem_node = do_bridge_resource_split(&(temp_resources.mem_head), 0x100000L);
-
- /* Check if we were able to split something off */
- if (mem_node) {
- /* 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 */
- RES_CHECK(mem_node->base - 1, 16);
- temp_word = (u16)((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_resource(&(resources->mem_head), mem_node);
- } else {
- /* it doesn't need any Mem */
- temp_word = 0x0000;
- rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
-
- return_resource(&(resources->mem_head), mem_node);
- kfree(hold_mem_node);
- }
- } else {
- /* 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 */
- 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 (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, 0x100000L);
-
- /* 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;
-
- RES_CHECK(hold_p_mem_node->base, 16);
- temp_word = (u16)((hold_p_mem_node->base) >> 16);
- rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word);
-
- return_resource(&(resources->p_mem_head), p_mem_node);
- }
-
- p_mem_node = do_bridge_resource_split(&(temp_resources.p_mem_head), 0x100000L);
-
- /* Check if we were able to split something off */
- if (p_mem_node) {
- /* 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 (hold_p_mem_node->length) {
- hold_p_mem_node->next = func->p_mem_head;
- func->p_mem_head = hold_p_mem_node;
-
- RES_CHECK(p_mem_node->base - 1, 16);
- temp_word = (u16)((p_mem_node->base - 1) >> 16);
- rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
-
- return_resource(&(resources->p_mem_head), p_mem_node);
- } else {
- /* it doesn't need any PMem */
- temp_word = 0x0000;
- rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
-
- return_resource(&(resources->p_mem_head), p_mem_node);
- kfree(hold_p_mem_node);
- }
- } else {
- /* 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 */
- 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
- */
-
- pciehprm_enable_card(ctrl, func, PCI_HEADER_TYPE_BRIDGE);
-
- dbg("PCI Bridge Hot-Added s:b:d:f(%02x:%02x:%02x:%02x)\n", ctrl->seg, func->bus, func->device, func->function);
-
- return rc;
-}
-
-/**
- * configure_new_function - Configures the PCI header information of one device
- *
- * @ctrl: pointer to controller structure
- * @func: pointer to function structure
- * @behind_bridge: 1 if this is a recursive call, 0 if not
- * @resources: pointer to set of resource lists
- *
- * Calls itself recursively for bridged devices.
- * Returns 0 if success
- *
- */
-static int
-configure_new_function(struct controller *ctrl, struct pci_func *func,
- u8 behind_bridge, struct resource_lists *resources,
- u8 bridge_bus, u8 bridge_dev)
-{
- int cloop;
- u8 temp_byte;
- u8 class_code;
- u32 rc;
- u32 temp_register;
- u32 base;
- unsigned int devfn;
- struct pci_resource *mem_node;
- struct pci_resource *io_node;
- struct pci_bus lpci_bus, *pci_bus;
-
- memcpy(&lpci_bus, ctrl->pci_dev->subordinate, sizeof(lpci_bus));
- pci_bus = &lpci_bus;
- 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);
- if (rc)
- return rc;
- dbg("%s: bus %x dev %x func %x temp_byte = %x\n", __FUNCTION__,
- func->bus, func->device, func->function, temp_byte);
-
- if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { /* PCI-PCI Bridge */
- rc = configure_new_bridge(ctrl, func, behind_bridge, resources,
- pci_bus);
-
- if (rc)
- return rc;
- } else if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_NORMAL) {
- /* Standard device */
- u64 base64;
- rc = pci_bus_read_config_byte(pci_bus, devfn, 0x0B, &class_code);
-
- if (class_code == PCI_BASE_CLASS_DISPLAY)
- return DEVICE_TYPE_NOT_SUPPORTED;
-
- /* Figure out IO and memory needs */
- for (cloop = PCI_BASE_ADDRESS_0; cloop <= PCI_BASE_ADDRESS_5; cloop += 4) {
- temp_register = 0xFFFFFFFF;
-
- rc = pci_bus_write_config_dword (pci_bus, devfn, cloop, temp_register);
- rc = pci_bus_read_config_dword(pci_bus, devfn, cloop, &temp_register);
- dbg("Bar[%x]=0x%x on bus:dev:func(0x%x:%x:%x)\n", cloop, temp_register,
- func->bus, func->device, func->function);
-
- if (!temp_register)
- continue;
-
- base64 = 0L;
- if (temp_register & PCI_BASE_ADDRESS_SPACE_IO) {
- /* Map IO */
-
- /* set base = amount of IO space */
- base = temp_register & 0xFFFFFFFC;
- base = ~base + 1;
-
- dbg("NEED IO length(0x%x)\n", base);
- io_node = get_io_resource(&(resources->io_head),(ulong)base);
-
- /* allocate the resource to the board */
- if (io_node) {
- dbg("Got IO base=0x%x(length=0x%x)\n", io_node->base, io_node->length);
- base = (u32)io_node->base;
- io_node->next = func->io_head;
- func->io_head = io_node;
- } else {
- err("Got NO IO resource(length=0x%x)\n", base);
- return -ENOMEM;
- }
- } else { /* map MEM */
- int prefetchable = 1;
- struct pci_resource **res_node = &func->p_mem_head;
- char *res_type_str = "PMEM";
- u32 temp_register2;
-
- if (!(temp_register & PCI_BASE_ADDRESS_MEM_PREFETCH)) {
- prefetchable = 0;
- res_node = &func->mem_head;
- res_type_str++;
- }
-
- base = temp_register & 0xFFFFFFF0;
- base = ~base + 1;
-
- switch (temp_register & PCI_BASE_ADDRESS_MEM_TYPE_MASK) {
- case PCI_BASE_ADDRESS_MEM_TYPE_32:
- dbg("NEED 32 %s bar=0x%x(length=0x%x)\n", res_type_str, temp_register, base);
-
- if (prefetchable && resources->p_mem_head)
- mem_node=get_resource(&(resources->p_mem_head), (ulong)base);
- else {
- if (prefetchable)
- dbg("using MEM for PMEM\n");
- mem_node = get_resource(&(resources->mem_head), (ulong)base);
- }
-
- /* allocate the resource to the board */
- if (mem_node) {
- base = (u32)mem_node->base;
- mem_node->next = *res_node;
- *res_node = mem_node;
- dbg("Got 32 %s base=0x%x(length=0x%x)\n", res_type_str, mem_node->base,
- mem_node->length);
- } else {
- err("Got NO 32 %s resource(length=0x%x)\n", res_type_str, base);
- return -ENOMEM;
- }
- break;
- case PCI_BASE_ADDRESS_MEM_TYPE_64:
- rc = pci_bus_read_config_dword(pci_bus, devfn, cloop+4, &temp_register2);
- dbg("NEED 64 %s bar=0x%x:%x(length=0x%x)\n", res_type_str, temp_register2,
- temp_register, base);
-
- if (prefetchable && resources->p_mem_head)
- mem_node = get_resource(&(resources->p_mem_head), (ulong)base);
- else {
- if (prefetchable)
- dbg("using MEM for PMEM\n");
- mem_node = get_resource(&(resources->mem_head), (ulong)base);
- }
-
- /* allocate the resource to the board */
- if (mem_node) {
- base64 = mem_node->base;
- mem_node->next = *res_node;
- *res_node = mem_node;
- dbg("Got 64 %s base=0x%x:%x(length=%x)\n", res_type_str, (u32)(base64 >> 32),
- (u32)base64, mem_node->length);
- } else {
- err("Got NO 64 %s resource(length=0x%x)\n", res_type_str, base);
- return -ENOMEM;
- }
- break;
- default:
- dbg("reserved BAR type=0x%x\n", temp_register);
- break;
- }
-
- }
-
- if (base64) {
- rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, (u32)base64);
- cloop += 4;
- base64 >>= 32;
-
- if (base64) {
- dbg("%s: high dword of base64(0x%x) set to 0\n", __FUNCTION__, (u32)base64);
- base64 = 0x0L;
- }
-
- rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, (u32)base64);
- } else {
- rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, base);
- }
- } /* End of base register loop */
-
- /* disable ROM base Address */
- rc = pci_bus_write_config_dword (pci_bus, devfn, PCI_ROM_ADDRESS, 0x00);
-
- /* Set HP parameters (Cache Line Size, Latency Timer) */
- rc = pciehprm_set_hpp(ctrl, func, PCI_HEADER_TYPE_NORMAL);
- if (rc)
- return rc;
-
- pciehprm_enable_card(ctrl, func, PCI_HEADER_TYPE_NORMAL);
-
- dbg("PCI function Hot-Added s:b:d:f(%02x:%02x:%02x:%02x)\n", ctrl->seg, func->bus, func->device,
- func->function);
- } /* End of Not-A-Bridge else */
- else {
- /* It's some strange type of PCI adapter (Cardbus?) */
- return DEVICE_TYPE_NOT_SUPPORTED;
- }
-
- func->configured = 1;
-
- return 0;
-}
#include <linux/pci.h>
#include "../pci.h"
#include "pciehp.h"
-#ifndef CONFIG_IA64
-#include "../../../arch/i386/pci/pci.h" /* horrible hack showing how processor dependant we are... */
-#endif
-int pciehp_configure_device (struct controller* ctrl, struct pci_func* func)
+int pciehp_configure_device(struct slot *p_slot)
{
- unsigned char bus;
- struct pci_bus *child;
- int num;
-
- if (func->pci_dev == NULL)
- func->pci_dev = pci_find_slot(func->bus, PCI_DEVFN(func->device, func->function));
-
- /* Still NULL ? Well then scan for it ! */
- if (func->pci_dev == NULL) {
- dbg("%s: pci_dev still null. do pci_scan_slot\n", __FUNCTION__);
-
- num = pci_scan_slot(ctrl->pci_dev->subordinate, PCI_DEVFN(func->device, func->function));
-
- if (num)
- pci_bus_add_devices(ctrl->pci_dev->subordinate);
-
- func->pci_dev = pci_find_slot(func->bus, PCI_DEVFN(func->device, func->function));
- if (func->pci_dev == NULL) {
- dbg("ERROR: pci_dev still null\n");
- return 0;
- }
+ struct pci_dev *dev;
+ struct pci_bus *parent = p_slot->ctrl->pci_dev->subordinate;
+ int num, fn;
+
+ dev = pci_find_slot(p_slot->bus, PCI_DEVFN(p_slot->device, 0));
+ if (dev) {
+ err("Device %s already exists at %x:%x, cannot hot-add\n",
+ pci_name(dev), p_slot->bus, p_slot->device);
+ return -EINVAL;
}
- if (func->pci_dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
- pci_read_config_byte(func->pci_dev, PCI_SECONDARY_BUS, &bus);
- child = pci_add_new_bus(func->pci_dev->bus, (func->pci_dev), bus);
- pci_do_scan_bus(child);
+ num = pci_scan_slot(parent, PCI_DEVFN(p_slot->device, 0));
+ if (num == 0) {
+ err("No new device found\n");
+ return -ENODEV;
+ }
+ for (fn = 0; fn < 8; fn++) {
+ if (!(dev = pci_find_slot(p_slot->bus,
+ PCI_DEVFN(p_slot->device, fn))))
+ continue;
+ if ((dev->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
+ err("Cannot hot-add display device %s\n",
+ pci_name(dev));
+ continue;
+ }
+ if ((dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) ||
+ (dev->hdr_type == PCI_HEADER_TYPE_CARDBUS)) {
+ /* Find an unused bus number for the new bridge */
+ struct pci_bus *child;
+ unsigned char busnr, start = parent->secondary;
+ unsigned char end = parent->subordinate;
+ for (busnr = start; busnr <= end; busnr++) {
+ if (!pci_find_bus(pci_domain_nr(parent),
+ busnr))
+ break;
+ }
+ if (busnr >= end) {
+ err("No free bus for hot-added bridge\n");
+ continue;
+ }
+ child = pci_add_new_bus(parent, dev, busnr);
+ if (!child) {
+ err("Cannot add new bus for %s\n",
+ pci_name(dev));
+ continue;
+ }
+ child->subordinate = pci_do_scan_bus(child);
+ pci_bus_size_bridges(child);
+ }
+ /* TBD: program firmware provided _HPP values */
+ /* program_fw_provided_values(dev); */
}
+ pci_bus_assign_resources(parent);
+ pci_bus_add_devices(parent);
+ pci_enable_bridges(parent);
return 0;
}
-
int pciehp_unconfigure_device(struct pci_func* func)
{
int rc = 0;
}
/*
- * pciehp_set_irq
- *
- * @bus_num: bus number of PCI device
- * @dev_num: device number of PCI device
- * @slot: pointer to u8 where slot number will be returned
- */
-int pciehp_set_irq (u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num)
-{
-#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_IO_APIC)
- int rc;
- u16 temp_word;
- struct pci_dev fakedev;
- struct pci_bus fakebus;
-
- fakedev.devfn = dev_num << 3;
- fakedev.bus = &fakebus;
- fakebus.number = bus_num;
- dbg("%s: dev %d, bus %d, pin %d, num %d\n",
- __FUNCTION__, dev_num, bus_num, int_pin, irq_num);
- rc = pcibios_set_irq_routing(&fakedev, int_pin - 0x0a, irq_num);
- dbg("%s: rc %d\n", __FUNCTION__, rc);
- if (!rc)
- return !rc;
-
- /* set the Edge Level Control Register (ELCR) */
- temp_word = inb(0x4d0);
- temp_word |= inb(0x4d1) << 8;
-
- temp_word |= 0x01 << irq_num;
-
- /* This should only be for x86 as it sets the Edge Level Control Register */
- outb((u8) (temp_word & 0xFF), 0x4d0);
- outb((u8) ((temp_word & 0xFF00) >> 8), 0x4d1);
-#endif
- return 0;
-}
-
-/* More PCI configuration routines; this time centered around hotplug controller */
-
-
-/*
* pciehp_save_config
*
* Reads configuration for all slots in a PCI bus and saves info.
return 0;
}
-
-/*
- * pciehp_save_used_resources
- *
- * Stores used resource information for existing boards. this is
- * for boards that were in the system when this driver was loaded.
- * this function is for hot plug ADD
- *
- * returns 0 if success
- * if disable == 1(DISABLE_CARD),
- * it loops for all functions of the slot and disables them.
- * else, it just get resources of the function and return.
- */
-int pciehp_save_used_resources(struct controller *ctrl, struct pci_func *func, int disable)
-{
- u8 cloop;
- u8 header_type;
- u8 secondary_bus;
- u8 temp_byte;
- u16 command;
- u16 save_command;
- u16 w_base, w_length;
- u32 temp_register;
- u32 save_base;
- u32 base, length;
- u64 base64 = 0;
- int index = 0;
- unsigned int devfn;
- struct pci_resource *mem_node = NULL;
- struct pci_resource *p_mem_node = NULL;
- struct pci_resource *t_mem_node;
- struct pci_resource *io_node;
- struct pci_resource *bus_node;
- struct pci_bus lpci_bus, *pci_bus;
- memcpy(&lpci_bus, ctrl->pci_dev->subordinate, sizeof(lpci_bus));
- pci_bus = &lpci_bus;
-
- if (disable)
- func = pciehp_slot_find(func->bus, func->device, index++);
-
- while ((func != NULL) && func->is_a_board) {
- pci_bus->number = func->bus;
- devfn = PCI_DEVFN(func->device, func->function);
-
- /* Save the command register */
- pci_bus_read_config_word(pci_bus, devfn, PCI_COMMAND, &save_command);
-
- if (disable) {
- /* disable card */
- command = 0x00;
- pci_bus_write_config_word(pci_bus, devfn, PCI_COMMAND, command);
- }
-
- /* Check for Bridge */
- pci_bus_read_config_byte(pci_bus, devfn, PCI_HEADER_TYPE, &header_type);
-
- if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { /* PCI-PCI Bridge */
- dbg("Save_used_res of PCI bridge b:d=0x%x:%x, sc=0x%x\n",
- func->bus, func->device, save_command);
- if (disable) {
- /* Clear Bridge Control Register */
- command = 0x00;
- pci_bus_write_config_word(pci_bus, devfn, PCI_BRIDGE_CONTROL, command);
- }
-
- pci_bus_read_config_byte(pci_bus, devfn, PCI_SECONDARY_BUS, &secondary_bus);
- pci_bus_read_config_byte(pci_bus, devfn, PCI_SUBORDINATE_BUS, &temp_byte);
-
- bus_node = kmalloc(sizeof(struct pci_resource),
- GFP_KERNEL);
- if (!bus_node)
- return -ENOMEM;
-
- bus_node->base = (ulong)secondary_bus;
- bus_node->length = (ulong)(temp_byte - secondary_bus + 1);
-
- bus_node->next = func->bus_head;
- func->bus_head = bus_node;
-
- /* Save IO base and Limit registers */
- pci_bus_read_config_byte(pci_bus, devfn, PCI_IO_BASE, &temp_byte);
- base = temp_byte;
- pci_bus_read_config_byte(pci_bus, devfn, PCI_IO_LIMIT, &temp_byte);
- length = temp_byte;
-
- if ((base <= length) && (!disable || (save_command & PCI_COMMAND_IO))) {
- io_node = kmalloc(sizeof(struct pci_resource),
- GFP_KERNEL);
- if (!io_node)
- return -ENOMEM;
-
- io_node->base = (ulong)(base & PCI_IO_RANGE_MASK) << 8;
- io_node->length = (ulong)(length - base + 0x10) << 8;
-
- io_node->next = func->io_head;
- func->io_head = io_node;
- }
-
- /* Save memory base and Limit registers */
- pci_bus_read_config_word(pci_bus, devfn, PCI_MEMORY_BASE, &w_base);
- pci_bus_read_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, &w_length);
-
- if ((w_base <= w_length) && (!disable || (save_command & PCI_COMMAND_MEMORY))) {
- mem_node = kmalloc(sizeof(struct pci_resource),
- GFP_KERNEL);
- if (!mem_node)
- return -ENOMEM;
-
- mem_node->base = (ulong)w_base << 16;
- mem_node->length = (ulong)(w_length - w_base + 0x10) << 16;
-
- mem_node->next = func->mem_head;
- func->mem_head = mem_node;
- }
- /* Save prefetchable memory base and Limit registers */
- pci_bus_read_config_word(pci_bus, devfn, PCI_PREF_MEMORY_BASE, &w_base);
- pci_bus_read_config_word(pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, &w_length);
-
- if ((w_base <= w_length) && (!disable || (save_command & PCI_COMMAND_MEMORY))) {
- p_mem_node = kmalloc(sizeof(struct pci_resource),
- GFP_KERNEL);
- if (!p_mem_node)
- return -ENOMEM;
-
- p_mem_node->base = (ulong)w_base << 16;
- p_mem_node->length = (ulong)(w_length - w_base + 0x10) << 16;
-
- p_mem_node->next = func->p_mem_head;
- func->p_mem_head = p_mem_node;
- }
- } else if ((header_type & 0x7F) == PCI_HEADER_TYPE_NORMAL) {
- dbg("Save_used_res of PCI adapter b:d=0x%x:%x, sc=0x%x\n",
- func->bus, func->device, save_command);
-
- /* Figure out IO and memory base lengths */
- for (cloop = PCI_BASE_ADDRESS_0; cloop <= PCI_BASE_ADDRESS_5; cloop += 4) {
- pci_bus_read_config_dword(pci_bus, devfn, cloop, &save_base);
-
- temp_register = 0xFFFFFFFF;
- pci_bus_write_config_dword(pci_bus, devfn, cloop, temp_register);
- pci_bus_read_config_dword(pci_bus, devfn, cloop, &temp_register);
-
- if (!disable)
- pci_bus_write_config_dword(pci_bus, devfn, cloop, save_base);
-
- if (!temp_register)
- continue;
-
- base = temp_register;
-
- if ((base & PCI_BASE_ADDRESS_SPACE_IO) &&
- (!disable || (save_command & PCI_COMMAND_IO))) {
- /* IO base */
- /* set temp_register = amount of IO space requested */
- base = base & 0xFFFFFFFCL;
- base = (~base) + 1;
-
- io_node = kmalloc(sizeof (struct pci_resource),
- GFP_KERNEL);
- if (!io_node)
- return -ENOMEM;
-
- io_node->base = (ulong)save_base & PCI_BASE_ADDRESS_IO_MASK;
- io_node->length = (ulong)base;
- dbg("sur adapter: IO bar=0x%x(length=0x%x)\n",
- io_node->base, io_node->length);
-
- io_node->next = func->io_head;
- func->io_head = io_node;
- } else { /* map Memory */
- int prefetchable = 1;
- /* struct pci_resources **res_node; */
- char *res_type_str = "PMEM";
- u32 temp_register2;
-
- t_mem_node = kmalloc(sizeof (struct pci_resource),
- GFP_KERNEL);
- if (!t_mem_node)
- return -ENOMEM;
-
- if (!(base & PCI_BASE_ADDRESS_MEM_PREFETCH) &&
- (!disable || (save_command & PCI_COMMAND_MEMORY))) {
- prefetchable = 0;
- mem_node = t_mem_node;
- res_type_str++;
- } else
- p_mem_node = t_mem_node;
-
- base = base & 0xFFFFFFF0L;
- base = (~base) + 1;
-
- switch (temp_register & PCI_BASE_ADDRESS_MEM_TYPE_MASK) {
- case PCI_BASE_ADDRESS_MEM_TYPE_32:
- if (prefetchable) {
- p_mem_node->base = (ulong)save_base & PCI_BASE_ADDRESS_MEM_MASK;
- p_mem_node->length = (ulong)base;
- dbg("sur adapter: 32 %s bar=0x%x(length=0x%x)\n",
- res_type_str,
- p_mem_node->base,
- p_mem_node->length);
-
- p_mem_node->next = func->p_mem_head;
- func->p_mem_head = p_mem_node;
- } else {
- mem_node->base = (ulong)save_base & PCI_BASE_ADDRESS_MEM_MASK;
- mem_node->length = (ulong)base;
- dbg("sur adapter: 32 %s bar=0x%x(length=0x%x)\n",
- res_type_str,
- mem_node->base,
- mem_node->length);
-
- mem_node->next = func->mem_head;
- func->mem_head = mem_node;
- }
- break;
- case PCI_BASE_ADDRESS_MEM_TYPE_64:
- pci_bus_read_config_dword(pci_bus, devfn, cloop+4, &temp_register2);
- base64 = temp_register2;
- base64 = (base64 << 32) | save_base;
-
- if (temp_register2) {
- dbg("sur adapter: 64 %s high dword of base64(0x%x:%x) masked to 0\n",
- res_type_str, temp_register2, (u32)base64);
- base64 &= 0x00000000FFFFFFFFL;
- }
-
- if (prefetchable) {
- p_mem_node->base = base64 & PCI_BASE_ADDRESS_MEM_MASK;
- p_mem_node->length = base;
- dbg("sur adapter: 64 %s base=0x%x(len=0x%x)\n",
- res_type_str,
- p_mem_node->base,
- p_mem_node->length);
-
- p_mem_node->next = func->p_mem_head;
- func->p_mem_head = p_mem_node;
- } else {
- mem_node->base = base64 & PCI_BASE_ADDRESS_MEM_MASK;
- mem_node->length = base;
- dbg("sur adapter: 64 %s base=0x%x(len=0x%x)\n",
- res_type_str,
- mem_node->base,
- mem_node->length);
-
- mem_node->next = func->mem_head;
- func->mem_head = mem_node;
- }
- cloop += 4;
- break;
- default:
- dbg("asur: reserved BAR type=0x%x\n",
- temp_register);
- break;
- }
- }
- } /* End of base register loop */
- } else { /* Some other unknown header type */
- dbg("Save_used_res of PCI unknown type b:d=0x%x:%x. skip.\n",
- func->bus, func->device);
- }
-
- /* find the next device in this slot */
- if (!disable)
- break;
- func = pciehp_slot_find(func->bus, func->device, index++);
- }
-
- return 0;
-}
-
-
-/**
- * kfree_resource_list: release memory of all list members
- * @res: resource list to free
- */
-static inline void
-return_resource_list(struct pci_resource **func, struct pci_resource **res)
-{
- struct pci_resource *node;
- struct pci_resource *t_node;
-
- node = *func;
- *func = NULL;
- while (node) {
- t_node = node->next;
- return_resource(res, node);
- node = t_node;
- }
-}
-
-/*
- * pciehp_return_board_resources
- *
- * this routine returns all resources allocated to a board to
- * the available pool.
- *
- * returns 0 if success
- */
-int pciehp_return_board_resources(struct pci_func * func,
- struct resource_lists * resources)
-{
- int rc;
-
- dbg("%s\n", __FUNCTION__);
-
- if (!func)
- return 1;
-
- return_resource_list(&(func->io_head),&(resources->io_head));
- return_resource_list(&(func->mem_head),&(resources->mem_head));
- return_resource_list(&(func->p_mem_head),&(resources->p_mem_head));
- return_resource_list(&(func->bus_head),&(resources->bus_head));
-
- rc = pciehp_resource_sort_and_combine(&(resources->mem_head));
- rc |= pciehp_resource_sort_and_combine(&(resources->p_mem_head));
- rc |= pciehp_resource_sort_and_combine(&(resources->io_head));
- rc |= pciehp_resource_sort_and_combine(&(resources->bus_head));
-
- return rc;
-}
-
-/**
- * kfree_resource_list: release memory of all list members
- * @res: resource list to free
- */
-static inline void
-kfree_resource_list(struct pci_resource **r)
-{
- struct pci_resource *res, *tres;
-
- res = *r;
- *r = NULL;
-
- while (res) {
- tres = res;
- res = res->next;
- kfree(tres);
- }
-}
-
-/**
- * pciehp_destroy_resource_list: put node back in the resource list
- * @resources: list to put nodes back
- */
-void pciehp_destroy_resource_list(struct resource_lists * resources)
-{
- kfree_resource_list(&(resources->io_head));
- kfree_resource_list(&(resources->mem_head));
- kfree_resource_list(&(resources->p_mem_head));
- kfree_resource_list(&(resources->bus_head));
-}
-
-/**
- * pciehp_destroy_board_resources: put node back in the resource list
- * @resources: list to put nodes back
- */
-void pciehp_destroy_board_resources(struct pci_func * func)
-{
- kfree_resource_list(&(func->io_head));
- kfree_resource_list(&(func->mem_head));
- kfree_resource_list(&(func->p_mem_head));
- kfree_resource_list(&(func->bus_head));
-}
#include <linux/pci-acpi.h>
#include <asm/uaccess.h>
#include <asm/system.h>
-#ifdef CONFIG_IA64
-#include <asm/iosapic.h>
-#endif
#include <acpi/acpi.h>
#include <acpi/acpi_bus.h>
#include <acpi/actypes.h>
int dev;
int fun;
u32 sun;
- struct pci_resource *mem_head;
- struct pci_resource *p_mem_head;
- struct pci_resource *io_head;
- struct pci_resource *bus_head;
void *slot_ops; /* _STA, _EJx, etc */
struct slot *slot;
}; /* per func */
int bus; /* pdev->subordinate->number */
struct acpi__hpp *_hpp;
struct acpi_php_slot *slots;
- struct pci_resource *tmem_head; /* total from crs */
- struct pci_resource *tp_mem_head; /* total from crs */
- struct pci_resource *tio_head; /* total from crs */
- struct pci_resource *tbus_head; /* total from crs */
- struct pci_resource *mem_head; /* available */
- struct pci_resource *p_mem_head; /* available */
- struct pci_resource *io_head; /* available */
- struct pci_resource *bus_head; /* available */
int scanned;
int type;
};
return oshp_run_status;
}
-static acpi_status acpi_evaluate_crs(
- acpi_handle handle,
- struct acpi_resource **retbuf
- )
-{
- acpi_status status;
- struct acpi_buffer crsbuf;
- u8 *path_name = acpi_path_name(handle);
-
- crsbuf.length = 0;
- crsbuf.pointer = NULL;
-
- status = acpi_get_current_resources (handle, &crsbuf);
-
- switch (status) {
- case AE_BUFFER_OVERFLOW:
- break; /* found */
- case AE_NOT_FOUND:
- dbg("acpi_pciehprm:%s _CRS not found\n", path_name);
- return status;
- default:
- err ("acpi_pciehprm:%s _CRS fail=0x%x\n", path_name, status);
- return status;
- }
-
- crsbuf.pointer = kmalloc (crsbuf.length, GFP_KERNEL);
- if (!crsbuf.pointer) {
- err ("acpi_pciehprm: alloc %ld bytes for %s _CRS fail\n", (ulong)crsbuf.length, path_name);
- return AE_NO_MEMORY;
- }
-
- status = acpi_get_current_resources (handle, &crsbuf);
- if (ACPI_FAILURE(status)) {
- err("acpi_pciehprm: %s _CRS fail=0x%x.\n", path_name, status);
- kfree(crsbuf.pointer);
- return status;
- }
-
- *retbuf = crsbuf.pointer;
-
- return status;
-}
-
-static void free_pci_resource ( struct pci_resource *aprh)
-{
- struct pci_resource *res, *next;
-
- for (res = aprh; res; res = next) {
- next = res->next;
- kfree(res);
- }
-}
-
-static void print_pci_resource ( struct pci_resource *aprh)
-{
- struct pci_resource *res;
-
- for (res = aprh; res; res = res->next)
- dbg(" base= 0x%x length= 0x%x\n", res->base, res->length);
-}
-
-static void print_slot_resources( struct acpi_php_slot *aps)
-{
- if (aps->bus_head) {
- dbg(" BUS Resources:\n");
- print_pci_resource (aps->bus_head);
- }
-
- if (aps->io_head) {
- dbg(" IO Resources:\n");
- print_pci_resource (aps->io_head);
- }
-
- if (aps->mem_head) {
- dbg(" MEM Resources:\n");
- print_pci_resource (aps->mem_head);
- }
-
- if (aps->p_mem_head) {
- dbg(" PMEM Resources:\n");
- print_pci_resource (aps->p_mem_head);
- }
-}
-
-static void print_pci_resources( struct acpi_bridge *ab)
-{
- if (ab->tbus_head) {
- dbg(" Total BUS Resources:\n");
- print_pci_resource (ab->tbus_head);
- }
- if (ab->bus_head) {
- dbg(" BUS Resources:\n");
- print_pci_resource (ab->bus_head);
- }
-
- if (ab->tio_head) {
- dbg(" Total IO Resources:\n");
- print_pci_resource (ab->tio_head);
- }
- if (ab->io_head) {
- dbg(" IO Resources:\n");
- print_pci_resource (ab->io_head);
- }
-
- if (ab->tmem_head) {
- dbg(" Total MEM Resources:\n");
- print_pci_resource (ab->tmem_head);
- }
- if (ab->mem_head) {
- dbg(" MEM Resources:\n");
- print_pci_resource (ab->mem_head);
- }
-
- if (ab->tp_mem_head) {
- dbg(" Total PMEM Resources:\n");
- print_pci_resource (ab->tp_mem_head);
- }
- if (ab->p_mem_head) {
- dbg(" PMEM Resources:\n");
- print_pci_resource (ab->p_mem_head);
- }
- if (ab->_hpp) {
- dbg(" _HPP: cache_line_size=0x%x\n", ab->_hpp->cache_line_size);
- dbg(" _HPP: latency timer =0x%x\n", ab->_hpp->latency_timer);
- dbg(" _HPP: enable SERR =0x%x\n", ab->_hpp->enable_serr);
- dbg(" _HPP: enable PERR =0x%x\n", ab->_hpp->enable_perr);
- }
-}
-
-static int pciehprm_delete_resource(
- struct pci_resource **aprh,
- ulong base,
- ulong size)
-{
- struct pci_resource *res;
- struct pci_resource *prevnode;
- struct pci_resource *split_node;
- ulong tbase;
-
- pciehp_resource_sort_and_combine(aprh);
-
- for (res = *aprh; res; res = res->next) {
- if (res->base > base)
- continue;
-
- if ((res->base + res->length) < (base + size))
- continue;
-
- if (res->base < base) {
- tbase = base;
-
- if ((res->length - (tbase - res->base)) < size)
- continue;
-
- split_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
- if (!split_node)
- return -ENOMEM;
-
- split_node->base = res->base;
- split_node->length = tbase - res->base;
- res->base = tbase;
- res->length -= split_node->length;
-
- split_node->next = res->next;
- res->next = split_node;
- }
-
- if (res->length >= size) {
- split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
- if (!split_node)
- return -ENOMEM;
-
- split_node->base = res->base + size;
- split_node->length = res->length - size;
- res->length = size;
-
- split_node->next = res->next;
- res->next = split_node;
- }
-
- if (*aprh == res) {
- *aprh = res->next;
- } else {
- prevnode = *aprh;
- while (prevnode->next != res)
- prevnode = prevnode->next;
-
- prevnode->next = res->next;
- }
- res->next = NULL;
- kfree(res);
- break;
- }
-
- return 0;
-}
-
-static int pciehprm_delete_resources(
- struct pci_resource **aprh,
- struct pci_resource *this
- )
-{
- struct pci_resource *res;
-
- for (res = this; res; res = res->next)
- pciehprm_delete_resource(aprh, res->base, res->length);
-
- return 0;
-}
-
-static int pciehprm_add_resource(
- struct pci_resource **aprh,
- ulong base,
- ulong size)
-{
- struct pci_resource *res;
-
- for (res = *aprh; res; res = res->next) {
- if ((res->base + res->length) == base) {
- res->length += size;
- size = 0L;
- break;
- }
- if (res->next == *aprh)
- break;
- }
-
- if (size) {
- res = kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
- if (!res) {
- err ("acpi_pciehprm: alloc for res fail\n");
- return -ENOMEM;
- }
- memset(res, 0, sizeof (struct pci_resource));
-
- res->base = base;
- res->length = size;
- res->next = *aprh;
- *aprh = res;
- }
-
- return 0;
-}
-
-static int pciehprm_add_resources(
- struct pci_resource **aprh,
- struct pci_resource *this
- )
-{
- struct pci_resource *res;
- int rc = 0;
-
- for (res = this; res && !rc; res = res->next)
- rc = pciehprm_add_resource(aprh, res->base, res->length);
-
- return rc;
-}
-
-static void acpi_parse_io (
- struct acpi_bridge *ab,
- union acpi_resource_data *data
- )
-{
- struct acpi_resource_io *dataio;
- dataio = (struct acpi_resource_io *) data;
-
- dbg("Io Resource\n");
- dbg(" %d bit decode\n", ACPI_DECODE_16 == dataio->io_decode ? 16:10);
- dbg(" Range minimum base: %08X\n", dataio->min_base_address);
- dbg(" Range maximum base: %08X\n", dataio->max_base_address);
- dbg(" Alignment: %08X\n", dataio->alignment);
- dbg(" Range Length: %08X\n", dataio->range_length);
-}
-
-static void acpi_parse_fixed_io (
- struct acpi_bridge *ab,
- union acpi_resource_data *data
- )
-{
- struct acpi_resource_fixed_io *datafio;
- datafio = (struct acpi_resource_fixed_io *) data;
-
- dbg("Fixed Io Resource\n");
- dbg(" Range base address: %08X", datafio->base_address);
- dbg(" Range length: %08X", datafio->range_length);
-}
-
-static void acpi_parse_address16_32 (
- struct acpi_bridge *ab,
- union acpi_resource_data *data,
- acpi_resource_type id
- )
-{
- /*
- * acpi_resource_address16 == acpi_resource_address32
- * acpi_resource_address16 *data16 = (acpi_resource_address16 *) data;
- */
- struct acpi_resource_address32 *data32 = (struct acpi_resource_address32 *) data;
- struct pci_resource **aprh, **tprh;
-
- if (id == ACPI_RSTYPE_ADDRESS16)
- dbg("acpi_pciehprm:16-Bit Address Space Resource\n");
- else
- dbg("acpi_pciehprm:32-Bit Address Space Resource\n");
-
- switch (data32->resource_type) {
- case ACPI_MEMORY_RANGE:
- dbg(" Resource Type: Memory Range\n");
- aprh = &ab->mem_head;
- tprh = &ab->tmem_head;
-
- switch (data32->attribute.memory.cache_attribute) {
- case ACPI_NON_CACHEABLE_MEMORY:
- dbg(" Type Specific: Noncacheable memory\n");
- break;
- case ACPI_CACHABLE_MEMORY:
- dbg(" Type Specific: Cacheable memory\n");
- break;
- case ACPI_WRITE_COMBINING_MEMORY:
- dbg(" Type Specific: Write-combining memory\n");
- break;
- case ACPI_PREFETCHABLE_MEMORY:
- aprh = &ab->p_mem_head;
- dbg(" Type Specific: Prefetchable memory\n");
- break;
- default:
- dbg(" Type Specific: Invalid cache attribute\n");
- break;
- }
-
- dbg(" Type Specific: Read%s\n", ACPI_READ_WRITE_MEMORY == data32->attribute.memory.read_write_attribute ? "/Write":" Only");
- break;
-
- case ACPI_IO_RANGE:
- dbg(" Resource Type: I/O Range\n");
- aprh = &ab->io_head;
- tprh = &ab->tio_head;
-
- switch (data32->attribute.io.range_attribute) {
- case ACPI_NON_ISA_ONLY_RANGES:
- dbg(" Type Specific: Non-ISA Io Addresses\n");
- break;
- case ACPI_ISA_ONLY_RANGES:
- dbg(" Type Specific: ISA Io Addresses\n");
- break;
- case ACPI_ENTIRE_RANGE:
- dbg(" Type Specific: ISA and non-ISA Io Addresses\n");
- break;
- default:
- dbg(" Type Specific: Invalid range attribute\n");
- break;
- }
- break;
-
- case ACPI_BUS_NUMBER_RANGE:
- dbg(" Resource Type: Bus Number Range(fixed)\n");
- /* fixup to be compatible with the rest of php driver */
- data32->min_address_range++;
- data32->address_length--;
- aprh = &ab->bus_head;
- tprh = &ab->tbus_head;
- break;
- default:
- dbg(" Resource Type: Invalid resource type. Exiting.\n");
- return;
- }
-
- dbg(" Resource %s\n", ACPI_CONSUMER == data32->producer_consumer ? "Consumer":"Producer");
- dbg(" %s decode\n", ACPI_SUB_DECODE == data32->decode ? "Subtractive":"Positive");
- dbg(" Min address is %s fixed\n", ACPI_ADDRESS_FIXED == data32->min_address_fixed ? "":"not");
- dbg(" Max address is %s fixed\n", ACPI_ADDRESS_FIXED == data32->max_address_fixed ? "":"not");
- dbg(" Granularity: %08X\n", data32->granularity);
- dbg(" Address range min: %08X\n", data32->min_address_range);
- dbg(" Address range max: %08X\n", data32->max_address_range);
- dbg(" Address translation offset: %08X\n", data32->address_translation_offset);
- dbg(" Address Length: %08X\n", data32->address_length);
-
- if (0xFF != data32->resource_source.index) {
- dbg(" Resource Source Index: %X\n", data32->resource_source.index);
- /* dbg(" Resource Source: %s\n", data32->resource_source.string_ptr); */
- }
-
- pciehprm_add_resource(aprh, data32->min_address_range, data32->address_length);
-}
-
-static acpi_status acpi_parse_crs(
- struct acpi_bridge *ab,
- struct acpi_resource *crsbuf
- )
-{
- acpi_status status = AE_OK;
- struct acpi_resource *resource = crsbuf;
- u8 count = 0;
- u8 done = 0;
-
- while (!done) {
- dbg("acpi_pciehprm: PCI bus 0x%x Resource structure %x.\n", ab->bus, count++);
- switch (resource->id) {
- case ACPI_RSTYPE_IRQ:
- dbg("Irq -------- Resource\n");
- break;
- case ACPI_RSTYPE_DMA:
- dbg("DMA -------- Resource\n");
- break;
- case ACPI_RSTYPE_START_DPF:
- dbg("Start DPF -------- Resource\n");
- break;
- case ACPI_RSTYPE_END_DPF:
- dbg("End DPF -------- Resource\n");
- break;
- case ACPI_RSTYPE_IO:
- acpi_parse_io (ab, &resource->data);
- break;
- case ACPI_RSTYPE_FIXED_IO:
- acpi_parse_fixed_io (ab, &resource->data);
- break;
- case ACPI_RSTYPE_VENDOR:
- dbg("Vendor -------- Resource\n");
- break;
- case ACPI_RSTYPE_END_TAG:
- dbg("End_tag -------- Resource\n");
- done = 1;
- break;
- case ACPI_RSTYPE_MEM24:
- dbg("Mem24 -------- Resource\n");
- break;
- case ACPI_RSTYPE_MEM32:
- dbg("Mem32 -------- Resource\n");
- break;
- case ACPI_RSTYPE_FIXED_MEM32:
- dbg("Fixed Mem32 -------- Resource\n");
- break;
- case ACPI_RSTYPE_ADDRESS16:
- acpi_parse_address16_32(ab, &resource->data, ACPI_RSTYPE_ADDRESS16);
- break;
- case ACPI_RSTYPE_ADDRESS32:
- acpi_parse_address16_32(ab, &resource->data, ACPI_RSTYPE_ADDRESS32);
- break;
- case ACPI_RSTYPE_ADDRESS64:
- info("Address64 -------- Resource unparsed\n");
- break;
- case ACPI_RSTYPE_EXT_IRQ:
- dbg("Ext Irq -------- Resource\n");
- break;
- default:
- dbg("Invalid -------- resource type 0x%x\n", resource->id);
- break;
- }
-
- resource = (struct acpi_resource *) ((char *)resource + resource->length);
- }
-
- return status;
-}
-
-static acpi_status acpi_get_crs( struct acpi_bridge *ab)
-{
- acpi_status status;
- struct acpi_resource *crsbuf;
-
- status = acpi_evaluate_crs(ab->handle, &crsbuf);
- if (ACPI_SUCCESS(status)) {
- status = acpi_parse_crs(ab, crsbuf);
- kfree(crsbuf);
-
- pciehp_resource_sort_and_combine(&ab->bus_head);
- pciehp_resource_sort_and_combine(&ab->io_head);
- pciehp_resource_sort_and_combine(&ab->mem_head);
- pciehp_resource_sort_and_combine(&ab->p_mem_head);
-
- pciehprm_add_resources (&ab->tbus_head, ab->bus_head);
- pciehprm_add_resources (&ab->tio_head, ab->io_head);
- pciehprm_add_resources (&ab->tmem_head, ab->mem_head);
- pciehprm_add_resources (&ab->tp_mem_head, ab->p_mem_head);
- }
-
- return status;
-}
-
/* find acpi_bridge downword from ab. */
static struct acpi_bridge *
find_acpi_bridge_by_bus(
ab->scanned = 0;
ab->type = BRIDGE_TYPE_HOST;
- /* get root pci bridge's current resources */
- status = acpi_get_crs(ab);
- if (ACPI_FAILURE(status)) {
- err("acpi_pciehprm:%s evaluate _CRS fail=0x%x\n", path_name, status);
- kfree(ab);
- return NULL;
- }
-
status = pci_osc_control_set (OSC_PCI_EXPRESS_NATIVE_HP_CONTROL);
if (ACPI_FAILURE(status)) {
err("%s: status %x\n", __FUNCTION__, status);
{
dbg(" free a php func of slot(0x%02x) on PCI b:d:f=0x%02x:%02x:%02x\n", aps->sun, aps->bus, aps->dev, aps->fun);
- free_pci_resource (aps->io_head);
- free_pci_resource (aps->bus_head);
- free_pci_resource (aps->mem_head);
- free_pci_resource (aps->p_mem_head);
-
kfree(aps);
}
free_a_slot(aps);
}
- free_pci_resource (ab->io_head);
- free_pci_resource (ab->tio_head);
- free_pci_resource (ab->bus_head);
- free_pci_resource (ab->tbus_head);
- free_pci_resource (ab->mem_head);
- free_pci_resource (ab->tmem_head);
- free_pci_resource (ab->p_mem_head);
- free_pci_resource (ab->tp_mem_head);
-
kfree(ab);
}
return slot_num;
}
-static int print_acpi_resources (struct acpi_bridge *ab)
-{
- struct acpi_php_slot *aps;
- int i;
-
- switch (ab->type) {
- case BRIDGE_TYPE_HOST:
- dbg("PCI HOST Bridge (%x) [%s]\n", ab->bus, acpi_path_name(ab->handle));
- break;
- case BRIDGE_TYPE_P2P:
- dbg("PCI P2P Bridge (%x-%x) [%s]\n", ab->pbus, ab->bus, acpi_path_name(ab->handle));
- break;
- };
-
- print_pci_resources (ab);
-
- for ( i = -1, aps = ab->slots; aps; aps = aps->next) {
- if (aps->dev == i)
- continue;
- dbg(" Slot sun(%x) s:b:d:f(%02x:%02x:%02x:%02x)\n", aps->sun, aps->seg, aps->bus, aps->dev, aps->fun);
- print_slot_resources(aps);
- i = aps->dev;
- }
-
- if (ab->child)
- print_acpi_resources (ab->child);
-
- if (ab->next)
- print_acpi_resources (ab->next);
-
- return 0;
-}
-
-int pciehprm_print_pirt(void)
-{
- dbg("PCIEHPRM ACPI Slots\n");
- if (acpi_bridges_head)
- print_acpi_resources (acpi_bridges_head);
-
- return 0;
-}
-
static struct acpi_php_slot * get_acpi_slot (
struct acpi_bridge *ab,
u32 sun
}
#endif
-static void pciehprm_dump_func_res( struct pci_func *fun)
-{
- struct pci_func *func = fun;
-
- if (func->bus_head) {
- dbg(": BUS Resources:\n");
- print_pci_resource (func->bus_head);
- }
- if (func->io_head) {
- dbg(": IO Resources:\n");
- print_pci_resource (func->io_head);
- }
- if (func->mem_head) {
- dbg(": MEM Resources:\n");
- print_pci_resource (func->mem_head);
- }
- if (func->p_mem_head) {
- dbg(": PMEM Resources:\n");
- print_pci_resource (func->p_mem_head);
- }
-}
-
-static void pciehprm_dump_ctrl_res( struct controller *ctlr)
-{
- struct controller *ctrl = ctlr;
-
- if (ctrl->bus_head) {
- dbg(": BUS Resources:\n");
- print_pci_resource (ctrl->bus_head);
- }
- if (ctrl->io_head) {
- dbg(": IO Resources:\n");
- print_pci_resource (ctrl->io_head);
- }
- if (ctrl->mem_head) {
- dbg(": MEM Resources:\n");
- print_pci_resource (ctrl->mem_head);
- }
- if (ctrl->p_mem_head) {
- dbg(": PMEM Resources:\n");
- print_pci_resource (ctrl->p_mem_head);
- }
-}
-
-static int pciehprm_get_used_resources (
- struct controller *ctrl,
- struct pci_func *func
- )
-{
- return pciehp_save_used_resources (ctrl, func, !DISABLE_CARD);
-}
-
-static int configure_existing_function(
- struct controller *ctrl,
- struct pci_func *func
- )
-{
- int rc;
-
- /* see how much resources the func has used. */
- rc = pciehprm_get_used_resources (ctrl, func);
-
- if (!rc) {
- /* subtract the resources used by the func from ctrl resources */
- rc = pciehprm_delete_resources (&ctrl->bus_head, func->bus_head);
- rc |= pciehprm_delete_resources (&ctrl->io_head, func->io_head);
- rc |= pciehprm_delete_resources (&ctrl->mem_head, func->mem_head);
- rc |= pciehprm_delete_resources (&ctrl->p_mem_head, func->p_mem_head);
- if (rc)
- warn("aCEF: cannot del used resources\n");
- } else
- err("aCEF: cannot get used resources\n");
-
- return rc;
-}
-
-static int bind_pci_resources_to_slots ( struct controller *ctrl)
-{
- struct pci_func *func, new_func;
- int busn = ctrl->slot_bus;
- int devn, funn;
- u32 vid;
-
- for (devn = 0; devn < 32; devn++) {
- for (funn = 0; funn < 8; funn++) {
- /*
- if (devn == ctrl->device && funn == ctrl->function)
- continue;
- */
- /* find out if this entry is for an occupied slot */
- vid = 0xFFFFFFFF;
- pci_bus_read_config_dword(ctrl->pci_dev->subordinate, PCI_DEVFN(devn, funn), PCI_VENDOR_ID, &vid);
-
- if (vid != 0xFFFFFFFF) {
- dbg("%s: vid = %x\n", __FUNCTION__, vid);
- func = pciehp_slot_find(busn, devn, funn);
- if (!func) {
- memset(&new_func, 0, sizeof(struct pci_func));
- new_func.bus = busn;
- new_func.device = devn;
- new_func.function = funn;
- new_func.is_a_board = 1;
- configure_existing_function(ctrl, &new_func);
- pciehprm_dump_func_res(&new_func);
- } else {
- configure_existing_function(ctrl, func);
- pciehprm_dump_func_res(func);
- }
- dbg("aCCF:existing PCI 0x%x Func ResourceDump\n", ctrl->bus);
- }
- }
- }
-
- return 0;
-}
-
-static int bind_pci_resources(
- struct controller *ctrl,
- struct acpi_bridge *ab
- )
-{
- int status = 0;
-
- if (ab->bus_head) {
- dbg("bapr: BUS Resources add on PCI 0x%x\n", ab->bus);
- status = pciehprm_add_resources (&ctrl->bus_head, ab->bus_head);
- if (pciehprm_delete_resources (&ab->bus_head, ctrl->bus_head))
- warn("bapr: cannot sub BUS Resource on PCI 0x%x\n", ab->bus);
- if (status) {
- err("bapr: BUS Resource add on PCI 0x%x: fail=0x%x\n", ab->bus, status);
- return status;
- }
- } else
- info("bapr: No BUS Resource on PCI 0x%x.\n", ab->bus);
-
- if (ab->io_head) {
- dbg("bapr: IO Resources add on PCI 0x%x\n", ab->bus);
- status = pciehprm_add_resources (&ctrl->io_head, ab->io_head);
- if (pciehprm_delete_resources (&ab->io_head, ctrl->io_head))
- warn("bapr: cannot sub IO Resource on PCI 0x%x\n", ab->bus);
- if (status) {
- err("bapr: IO Resource add on PCI 0x%x: fail=0x%x\n", ab->bus, status);
- return status;
- }
- } else
- info("bapr: No IO Resource on PCI 0x%x.\n", ab->bus);
-
- if (ab->mem_head) {
- dbg("bapr: MEM Resources add on PCI 0x%x\n", ab->bus);
- status = pciehprm_add_resources (&ctrl->mem_head, ab->mem_head);
- if (pciehprm_delete_resources (&ab->mem_head, ctrl->mem_head))
- warn("bapr: cannot sub MEM Resource on PCI 0x%x\n", ab->bus);
- if (status) {
- err("bapr: MEM Resource add on PCI 0x%x: fail=0x%x\n", ab->bus, status);
- return status;
- }
- } else
- info("bapr: No MEM Resource on PCI 0x%x.\n", ab->bus);
-
- if (ab->p_mem_head) {
- dbg("bapr: PMEM Resources add on PCI 0x%x\n", ab->bus);
- status = pciehprm_add_resources (&ctrl->p_mem_head, ab->p_mem_head);
- if (pciehprm_delete_resources (&ab->p_mem_head, ctrl->p_mem_head))
- warn("bapr: cannot sub PMEM Resource on PCI 0x%x\n", ab->bus);
- if (status) {
- err("bapr: PMEM Resource add on PCI 0x%x: fail=0x%x\n", ab->bus, status);
- return status;
- }
- } else
- info("bapr: No PMEM Resource on PCI 0x%x.\n", ab->bus);
-
- return status;
-}
-
-static int no_pci_resources( struct acpi_bridge *ab)
-{
- return !(ab->p_mem_head || ab->mem_head || ab->io_head || ab->bus_head);
-}
-
-static int find_pci_bridge_resources (
- struct controller *ctrl,
- struct acpi_bridge *ab
- )
-{
- int rc = 0;
- struct pci_func func;
-
- memset(&func, 0, sizeof(struct pci_func));
-
- func.bus = ab->pbus;
- func.device = ab->pdevice;
- func.function = ab->pfunction;
- func.is_a_board = 1;
-
- /* Get used resources for this PCI bridge */
- rc = pciehp_save_used_resources (ctrl, &func, !DISABLE_CARD);
-
- ab->io_head = func.io_head;
- ab->mem_head = func.mem_head;
- ab->p_mem_head = func.p_mem_head;
- ab->bus_head = func.bus_head;
- if (ab->bus_head)
- pciehprm_delete_resource(&ab->bus_head, ctrl->pci_dev->subordinate->number, 1);
-
- return rc;
-}
-
-static int get_pci_resources_from_bridge(
- struct controller *ctrl,
- struct acpi_bridge *ab
- )
-{
- int rc = 0;
-
- dbg("grfb: Get Resources for PCI 0x%x from actual PCI bridge 0x%x.\n", ctrl->bus, ab->bus);
-
- rc = find_pci_bridge_resources (ctrl, ab);
-
- pciehp_resource_sort_and_combine(&ab->bus_head);
- pciehp_resource_sort_and_combine(&ab->io_head);
- pciehp_resource_sort_and_combine(&ab->mem_head);
- pciehp_resource_sort_and_combine(&ab->p_mem_head);
-
- pciehprm_add_resources (&ab->tbus_head, ab->bus_head);
- pciehprm_add_resources (&ab->tio_head, ab->io_head);
- pciehprm_add_resources (&ab->tmem_head, ab->mem_head);
- pciehprm_add_resources (&ab->tp_mem_head, ab->p_mem_head);
-
- return rc;
-}
-
-static int get_pci_resources(
- struct controller *ctrl,
- struct acpi_bridge *ab
- )
-{
- int rc = 0;
-
- if (no_pci_resources(ab)) {
- dbg("spbr:PCI 0x%x has no resources. Get parent resources.\n", ab->bus);
- rc = get_pci_resources_from_bridge(ctrl, ab);
- }
-
- return rc;
-}
-
-/*
- * Get resources for this ctrl.
- * 1. get total resources from ACPI _CRS or bridge (this ctrl)
- * 2. find used resources of existing adapters
- * 3. subtract used resources from total resources
- */
-int pciehprm_find_available_resources( struct controller *ctrl)
-{
- int rc = 0;
- struct acpi_bridge *ab;
-
- ab = find_acpi_bridge_by_bus(acpi_bridges_head, ctrl->seg, ctrl->pci_dev->subordinate->number);
- if (!ab) {
- err("pfar:cannot locate acpi bridge of PCI 0x%x.\n", ctrl->pci_dev->subordinate->number);
- return -1;
- }
- if (no_pci_resources(ab)) {
- rc = get_pci_resources(ctrl, ab);
- if (rc) {
- err("pfar:cannot get pci resources of PCI 0x%x.\n", ctrl->pci_dev->subordinate->number);
- return -1;
- }
- }
-
- rc = bind_pci_resources(ctrl, ab);
- dbg("pfar:pre-Bind PCI 0x%x Ctrl Resource Dump\n", ctrl->pci_dev->subordinate->number);
- pciehprm_dump_ctrl_res(ctrl);
-
- bind_pci_resources_to_slots (ctrl);
-
- dbg("pfar:post-Bind PCI 0x%x Ctrl Resource Dump\n", ctrl->pci_dev->subordinate->number);
- pciehprm_dump_ctrl_res(ctrl);
-
- return rc;
-}
-
int pciehprm_set_hpp(
struct controller *ctrl,
struct pci_func *func,
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/slab.h>
-
#include <asm/uaccess.h>
-#ifdef CONFIG_IA64
-#include <asm/iosapic.h>
-#endif
-
#include "pciehp.h"
#include "pciehprm.h"
#include "pciehprm_nonacpi.h"
return;
}
-int pciehprm_print_pirt(void)
-{
- return 0;
-}
-
int pciehprm_get_physical_slot_number(struct controller *ctrl, u32 *sun, u8 busnum, u8 devnum)
{
return 0;
}
-
-static void print_pci_resource ( struct pci_resource *aprh)
-{
- struct pci_resource *res;
-
- for (res = aprh; res; res = res->next)
- dbg(" base= 0x%x length= 0x%x\n", res->base, res->length);
-}
-
-
-static void phprm_dump_func_res( struct pci_func *fun)
-{
- struct pci_func *func = fun;
-
- if (func->bus_head) {
- dbg(": BUS Resources:\n");
- print_pci_resource (func->bus_head);
- }
- if (func->io_head) {
- dbg(": IO Resources:\n");
- print_pci_resource (func->io_head);
- }
- if (func->mem_head) {
- dbg(": MEM Resources:\n");
- print_pci_resource (func->mem_head);
- }
- if (func->p_mem_head) {
- dbg(": PMEM Resources:\n");
- print_pci_resource (func->p_mem_head);
- }
-}
-
-static int phprm_get_used_resources (
- struct controller *ctrl,
- struct pci_func *func
- )
-{
- return pciehp_save_used_resources (ctrl, func, !DISABLE_CARD);
-}
-
-static int phprm_delete_resource(
- struct pci_resource **aprh,
- ulong base,
- ulong size)
-{
- struct pci_resource *res;
- struct pci_resource *prevnode;
- struct pci_resource *split_node;
- ulong tbase;
-
- pciehp_resource_sort_and_combine(aprh);
-
- for (res = *aprh; res; res = res->next) {
- if (res->base > base)
- continue;
-
- if ((res->base + res->length) < (base + size))
- continue;
-
- if (res->base < base) {
- tbase = base;
-
- if ((res->length - (tbase - res->base)) < size)
- continue;
-
- split_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
- if (!split_node)
- return -ENOMEM;
-
- split_node->base = res->base;
- split_node->length = tbase - res->base;
- res->base = tbase;
- res->length -= split_node->length;
-
- split_node->next = res->next;
- res->next = split_node;
- }
-
- if (res->length >= size) {
- split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
- if (!split_node)
- return -ENOMEM;
-
- split_node->base = res->base + size;
- split_node->length = res->length - size;
- res->length = size;
-
- split_node->next = res->next;
- res->next = split_node;
- }
-
- if (*aprh == res) {
- *aprh = res->next;
- } else {
- prevnode = *aprh;
- while (prevnode->next != res)
- prevnode = prevnode->next;
-
- prevnode->next = res->next;
- }
- res->next = NULL;
- kfree(res);
- break;
- }
-
- return 0;
-}
-
-
-static int phprm_delete_resources(
- struct pci_resource **aprh,
- struct pci_resource *this
- )
-{
- struct pci_resource *res;
-
- for (res = this; res; res = res->next)
- phprm_delete_resource(aprh, res->base, res->length);
-
- return 0;
-}
-
-
-static int configure_existing_function(
- struct controller *ctrl,
- struct pci_func *func
- )
-{
- int rc;
-
- /* see how much resources the func has used. */
- rc = phprm_get_used_resources (ctrl, func);
-
- if (!rc) {
- /* subtract the resources used by the func from ctrl resources */
- rc = phprm_delete_resources (&ctrl->bus_head, func->bus_head);
- rc |= phprm_delete_resources (&ctrl->io_head, func->io_head);
- rc |= phprm_delete_resources (&ctrl->mem_head, func->mem_head);
- rc |= phprm_delete_resources (&ctrl->p_mem_head, func->p_mem_head);
- if (rc)
- warn("aCEF: cannot del used resources\n");
- } else
- err("aCEF: cannot get used resources\n");
-
- return rc;
-}
-
-static int pciehprm_delete_resource(
- struct pci_resource **aprh,
- ulong base,
- ulong size)
-{
- struct pci_resource *res;
- struct pci_resource *prevnode;
- struct pci_resource *split_node;
- ulong tbase;
-
- pciehp_resource_sort_and_combine(aprh);
-
- for (res = *aprh; res; res = res->next) {
- if (res->base > base)
- continue;
-
- if ((res->base + res->length) < (base + size))
- continue;
-
- if (res->base < base) {
- tbase = base;
-
- if ((res->length - (tbase - res->base)) < size)
- continue;
-
- split_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
- if (!split_node)
- return -ENOMEM;
-
- split_node->base = res->base;
- split_node->length = tbase - res->base;
- res->base = tbase;
- res->length -= split_node->length;
-
- split_node->next = res->next;
- res->next = split_node;
- }
-
- if (res->length >= size) {
- split_node = (struct pci_resource*) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
- if (!split_node)
- return -ENOMEM;
-
- split_node->base = res->base + size;
- split_node->length = res->length - size;
- res->length = size;
-
- split_node->next = res->next;
- res->next = split_node;
- }
-
- if (*aprh == res) {
- *aprh = res->next;
- } else {
- prevnode = *aprh;
- while (prevnode->next != res)
- prevnode = prevnode->next;
-
- prevnode->next = res->next;
- }
- res->next = NULL;
- kfree(res);
- break;
- }
-
- return 0;
-}
-
-static int bind_pci_resources_to_slots ( struct controller *ctrl)
-{
- struct pci_func *func, new_func;
- int busn = ctrl->slot_bus;
- int devn, funn;
- u32 vid;
-
- for (devn = 0; devn < 32; devn++) {
- for (funn = 0; funn < 8; funn++) {
- /*
- if (devn == ctrl->device && funn == ctrl->function)
- continue;
- */
- /* find out if this entry is for an occupied slot */
- vid = 0xFFFFFFFF;
-
- pci_bus_read_config_dword(ctrl->pci_dev->subordinate, PCI_DEVFN(devn, funn), PCI_VENDOR_ID, &vid);
-
- if (vid != 0xFFFFFFFF) {
- dbg("%s: vid = %x bus %x dev %x fun %x\n", __FUNCTION__,
- vid, busn, devn, funn);
- func = pciehp_slot_find(busn, devn, funn);
- dbg("%s: func = %p\n", __FUNCTION__,func);
- if (!func) {
- memset(&new_func, 0, sizeof(struct pci_func));
- new_func.bus = busn;
- new_func.device = devn;
- new_func.function = funn;
- new_func.is_a_board = 1;
- configure_existing_function(ctrl, &new_func);
- phprm_dump_func_res(&new_func);
- } else {
- configure_existing_function(ctrl, func);
- phprm_dump_func_res(func);
- }
- dbg("aCCF:existing PCI 0x%x Func ResourceDump\n", ctrl->bus);
- }
- }
- }
-
- return 0;
-}
-
-static void phprm_dump_ctrl_res( struct controller *ctlr)
-{
- struct controller *ctrl = ctlr;
-
- if (ctrl->bus_head) {
- dbg(": BUS Resources:\n");
- print_pci_resource (ctrl->bus_head);
- }
- if (ctrl->io_head) {
- dbg(": IO Resources:\n");
- print_pci_resource (ctrl->io_head);
- }
- if (ctrl->mem_head) {
- dbg(": MEM Resources:\n");
- print_pci_resource (ctrl->mem_head);
- }
- if (ctrl->p_mem_head) {
- dbg(": PMEM Resources:\n");
- print_pci_resource (ctrl->p_mem_head);
- }
-}
-
-/*
- * phprm_find_available_resources
- *
- * Finds available memory, IO, and IRQ resources for programming
- * devices which may be added to the system
- * this function is for hot plug ADD!
- *
- * returns 0 if success
- */
-int pciehprm_find_available_resources(struct controller *ctrl)
-{
- struct pci_func func;
- u32 rc;
-
- memset(&func, 0, sizeof(struct pci_func));
-
- func.bus = ctrl->bus;
- func.device = ctrl->device;
- func.function = ctrl->function;
- func.is_a_board = 1;
-
- /* Get resources for this PCI bridge */
- rc = pciehp_save_used_resources (ctrl, &func, !DISABLE_CARD);
- dbg("%s: pciehp_save_used_resources rc = %d\n", __FUNCTION__, rc);
-
- if (func.mem_head)
- func.mem_head->next = ctrl->mem_head;
- ctrl->mem_head = func.mem_head;
-
- if (func.p_mem_head)
- func.p_mem_head->next = ctrl->p_mem_head;
- ctrl->p_mem_head = func.p_mem_head;
-
- if (func.io_head)
- func.io_head->next = ctrl->io_head;
- ctrl->io_head = func.io_head;
-
- if(func.bus_head)
- func.bus_head->next = ctrl->bus_head;
- ctrl->bus_head = func.bus_head;
-
- if (ctrl->bus_head)
- pciehprm_delete_resource(&ctrl->bus_head, ctrl->pci_dev->subordinate->number, 1);
-
- dbg("%s:pre-Bind PCI 0x%x Ctrl Resource Dump\n", __FUNCTION__, ctrl->bus);
- phprm_dump_ctrl_res(ctrl);
-
- dbg("%s: before bind_pci_resources_to slots\n", __FUNCTION__);
-
- bind_pci_resources_to_slots (ctrl);
-
- dbg("%s:post-Bind PCI 0x%x Ctrl Resource Dump\n", __FUNCTION__, ctrl->bus);
- phprm_dump_ctrl_res(ctrl);
-
- return (rc);
-}
-
int pciehprm_set_hpp(
struct controller *ctrl,
struct pci_func *func,
git://ftp.safe.ca / safe / jmp / linux-2.6 / commitdiff