diff options
Diffstat (limited to 'drivers/pci/hotplug/pciehp_ctrl.c')
| -rw-r--r-- | drivers/pci/hotplug/pciehp_ctrl.c | 1979 |
1 files changed, 65 insertions, 1914 deletions
diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c index 898f6da6f0de..5e582eca21d8 100644 --- a/drivers/pci/hotplug/pciehp_ctrl.c +++ b/drivers/pci/hotplug/pciehp_ctrl.c @@ -27,25 +27,14 @@ * */ -#include <linux/config.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/types.h> -#include <linux/slab.h> -#include <linux/workqueue.h> -#include <linux/interrupt.h> -#include <linux/delay.h> -#include <linux/wait.h> #include <linux/smp_lock.h> #include <linux/pci.h> #include "../pci.h" #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) */ @@ -60,22 +49,18 @@ u8 pciehp_handle_attention_button(u8 hp_slot, void *inst_id) struct slot *p_slot; u8 rc = 0; u8 getstatus; - struct pci_func *func; struct event_info *taskInfo; /* Attention Button Change */ dbg("pciehp: Attention button interrupt received.\n"); - func = pciehp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0); - /* This is the structure that tells the worker thread what to do */ taskInfo = &(ctrl->event_queue[ctrl->next_event]); p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); - p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save)); p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); - ctrl->next_event = (ctrl->next_event + 1) % 10; + ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS; taskInfo->hp_slot = hp_slot; rc++; @@ -117,24 +102,20 @@ u8 pciehp_handle_switch_change(u8 hp_slot, void *inst_id) struct slot *p_slot; u8 rc = 0; u8 getstatus; - struct pci_func *func; struct event_info *taskInfo; /* Switch Change */ dbg("pciehp: Switch interrupt received.\n"); - func = pciehp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0); - /* This is the structure that tells the worker thread * what to do */ taskInfo = &(ctrl->event_queue[ctrl->next_event]); - ctrl->next_event = (ctrl->next_event + 1) % 10; + ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS; taskInfo->hp_slot = hp_slot; rc++; p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); - p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save)); p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); if (getstatus) { @@ -142,14 +123,12 @@ u8 pciehp_handle_switch_change(u8 hp_slot, void *inst_id) * Switch opened */ info("Latch open on Slot(%d)\n", ctrl->first_slot + hp_slot); - func->switch_save = 0; taskInfo->event_type = INT_SWITCH_OPEN; } else { /* * Switch closed */ info("Latch close on Slot(%d)\n", ctrl->first_slot + hp_slot); - func->switch_save = 0x10; taskInfo->event_type = INT_SWITCH_CLOSE; } @@ -163,20 +142,17 @@ u8 pciehp_handle_presence_change(u8 hp_slot, void *inst_id) { struct controller *ctrl = (struct controller *) inst_id; struct slot *p_slot; - u8 rc = 0; - struct pci_func *func; + u8 presence_save, rc = 0; struct event_info *taskInfo; /* Presence Change */ dbg("pciehp: Presence/Notify input change.\n"); - func = pciehp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0); - /* This is the structure that tells the worker thread * what to do */ taskInfo = &(ctrl->event_queue[ctrl->next_event]); - ctrl->next_event = (ctrl->next_event + 1) % 10; + ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS; taskInfo->hp_slot = hp_slot; rc++; @@ -185,8 +161,8 @@ u8 pciehp_handle_presence_change(u8 hp_slot, void *inst_id) /* Switch is open, assume a presence change * Save the presence state */ - p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save)); - if (func->presence_save) { + p_slot->hpc_ops->get_adapter_status(p_slot, &presence_save); + if (presence_save) { /* * Card Present */ @@ -211,19 +187,16 @@ u8 pciehp_handle_power_fault(u8 hp_slot, void *inst_id) struct controller *ctrl = (struct controller *) inst_id; struct slot *p_slot; u8 rc = 0; - struct pci_func *func; struct event_info *taskInfo; /* power fault */ dbg("pciehp: Power fault interrupt received.\n"); - func = pciehp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0); - /* this is the structure that tells the worker thread * what to do */ taskInfo = &(ctrl->event_queue[ctrl->next_event]); - ctrl->next_event = (ctrl->next_event + 1) % 10; + ctrl->next_event = (ctrl->next_event + 1) % MAX_EVENTS; taskInfo->hp_slot = hp_slot; rc++; @@ -234,7 +207,7 @@ u8 pciehp_handle_power_fault(u8 hp_slot, void *inst_id) * power fault Cleared */ info("Power fault cleared on Slot(%d)\n", ctrl->first_slot + hp_slot); - func->status = 0x00; + p_slot->status = 0x00; taskInfo->event_type = INT_POWER_FAULT_CLEAR; } else { /* @@ -243,7 +216,7 @@ u8 pciehp_handle_power_fault(u8 hp_slot, void *inst_id) info("Power fault on Slot(%d)\n", ctrl->first_slot + hp_slot); taskInfo->event_type = INT_POWER_FAULT; /* set power fault status for this board */ - func->status = 0xFF; + p_slot->status = 0xFF; info("power fault bit %x set\n", hp_slot); } if (rc) @@ -252,810 +225,6 @@ u8 pciehp_handle_power_fault(u8 hp_slot, void *inst_id) 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 - * - * Returns pointer to the new node or NULL if unsuccessful - */ -struct pci_func *pciehp_slot_create(u8 busnumber) -{ - struct pci_func *new_slot; - struct pci_func *next; - dbg("%s: busnumber %x\n", __FUNCTION__, busnumber); - new_slot = kmalloc(sizeof(struct pci_func), GFP_KERNEL); - - if (new_slot == NULL) - return new_slot; - - memset(new_slot, 0, sizeof(struct pci_func)); - - new_slot->next = NULL; - new_slot->configured = 1; - - if (pciehp_slot_list[busnumber] == NULL) { - pciehp_slot_list[busnumber] = new_slot; - } else { - next = pciehp_slot_list[busnumber]; - while (next->next != NULL) - next = next->next; - next->next = new_slot; - } - return new_slot; -} - - -/** - * slot_remove - Removes a node from the linked list of slots. - * @old_slot: slot to remove - * - * Returns 0 if successful, !0 otherwise. - */ -static int slot_remove(struct pci_func * old_slot) -{ - struct pci_func *next; - - if (old_slot == NULL) - return 1; - - next = pciehp_slot_list[old_slot->bus]; - - if (next == NULL) - return 1; - - if (next == old_slot) { - pciehp_slot_list[old_slot->bus] = old_slot->next; - pciehp_destroy_board_resources(old_slot); - kfree(old_slot); - return 0; - } - - while ((next->next != old_slot) && (next->next != NULL)) { - next = next->next; - } - - if (next->next == old_slot) { - next->next = old_slot->next; - pciehp_destroy_board_resources(old_slot); - kfree(old_slot); - return 0; - } else - return 2; -} - - -/** - * bridge_slot_remove - Removes a node from the linked list of slots. - * @bridge: bridge to remove - * - * Returns 0 if successful, !0 otherwise. - */ -static int bridge_slot_remove(struct pci_func *bridge) -{ - u8 subordinateBus, secondaryBus; - u8 tempBus; - struct pci_func *next; - - if (bridge == NULL) - return 1; - - secondaryBus = (bridge->config_space[0x06] >> 8) & 0xFF; - subordinateBus = (bridge->config_space[0x06] >> 16) & 0xFF; - - for (tempBus = secondaryBus; tempBus <= subordinateBus; tempBus++) { - next = pciehp_slot_list[tempBus]; - - while (!slot_remove(next)) { - next = pciehp_slot_list[tempBus]; - } - } - - next = pciehp_slot_list[bridge->bus]; - - if (next == NULL) { - return 1; - } - - if (next == bridge) { - pciehp_slot_list[bridge->bus] = bridge->next; - kfree(bridge); - return 0; - } - - while ((next->next != bridge) && (next->next != NULL)) { - next = next->next; - } - - if (next->next == bridge) { - next->next = bridge->next; - kfree(bridge); - return 0; - } else - return 2; -} - - -/** - * pciehp_slot_find - Looks for a node by bus, and device, multiple functions accessed - * @bus: bus to find - * @device: device to find - * @index: is 0 for first function found, 1 for the second... - * - * Returns pointer to the node if successful, %NULL otherwise. - */ -struct pci_func *pciehp_slot_find(u8 bus, u8 device, u8 index) -{ - int found = -1; - struct pci_func *func; - - func = pciehp_slot_list[bus]; - dbg("%s: bus %x device %x index %x\n", - __FUNCTION__, bus, device, index); - if (func != NULL) { - dbg("%s: func-> bus %x device %x function %x pci_dev %p\n", - __FUNCTION__, func->bus, func->device, func->function, - func->pci_dev); - } else - dbg("%s: func == NULL\n", __FUNCTION__); - - if ((func == NULL) || ((func->device == device) && (index == 0))) - return func; - - if (func->device == device) - found++; - - while (func->next != NULL) { - func = func->next; - - dbg("%s: In while loop, func-> bus %x device %x function %x pci_dev %p\n", - __FUNCTION__, func->bus, func->device, func->function, - func->pci_dev); - if (func->device == device) - found++; - dbg("%s: while loop, found %d, index %d\n", __FUNCTION__, - found, index); - - if ((found == index) || (func->function == index)) { - dbg("%s: Found bus %x dev %x func %x\n", __FUNCTION__, - func->bus, func->device, func->function); - return func; - } - } - - return NULL; -} - -static int is_bridge(struct pci_func * func) -{ - /* Check the header type */ - if (((func->config_space[0x03] >> 16) & 0xFF) == 0x01) - return 1; - else - return 0; -} - - /* The following routines constitute the bulk of the hotplug controller logic */ @@ -1100,20 +269,17 @@ static void set_slot_off(struct controller *ctrl, struct slot * pslot) * Configures board * */ -static u32 board_added(struct pci_func * func, struct controller * ctrl) +static int board_added(struct slot *p_slot) { 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; + int rc = 0; + struct controller *ctrl = p_slot->ctrl; - p_slot = pciehp_find_slot(ctrl, func->device); - hp_slot = func->device - ctrl->slot_device_offset; + hp_slot = p_slot->device - ctrl->slot_device_offset; - dbg("%s: func->device, slot_offset, hp_slot = %d, %d ,%d\n", __FUNCTION__, func->device, ctrl->slot_device_offset, hp_slot); + dbg("%s: slot device, slot offset, hp slot = %d, %d ,%d\n", + __FUNCTION__, p_slot->device, + ctrl->slot_device_offset, hp_slot); /* Wait for exclusive access to hardware */ down(&ctrl->crit_sect); @@ -1141,9 +307,7 @@ static u32 board_added(struct pci_func * func, struct controller * ctrl) up(&ctrl->crit_sect); /* Wait for ~1 second */ - dbg("%s: before long_delay\n", __FUNCTION__); wait_for_ctrl_irq (ctrl); - dbg("%s: afterlong_delay\n", __FUNCTION__); /* Check link training status */ rc = p_slot->hpc_ops->check_lnk_status(ctrl); @@ -1153,98 +317,47 @@ static u32 board_added(struct pci_func * func, struct controller * ctrl) return rc; } - dbg("%s: func status = %x\n", __FUNCTION__, func->status); + dbg("%s: slot status = %x\n", __FUNCTION__, p_slot->status); /* Check for a power fault */ - if (func->status == 0xFF) { + if (p_slot->status == 0xFF) { /* power fault occurred, but it was benign */ - temp_register = 0xFFFFFFFF; - dbg("%s: temp register set to %x by power fault\n", __FUNCTION__, temp_register); rc = POWER_FAILURE; - func->status = 0; - } else { - /* Get vendor/device ID u32 */ - 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; + p_slot->status = 0; + 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; + 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; + } - 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)); + p_slot->status = 0; - if (rc) { - set_slot_off(ctrl, p_slot); - return rc; - } - pciehp_save_slot_config(ctrl, func); - - 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; } @@ -1252,55 +365,25 @@ static u32 board_added(struct pci_func * func, struct controller * ctrl) * remove_board - Turns off slot and LED's * */ -static u32 remove_board(struct pci_func *func, struct controller *ctrl) +static int remove_board(struct slot *p_slot) { - 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) - return 1; + int rc; + struct controller *ctrl = p_slot->ctrl; - if (pciehp_unconfigure_device(func)) + if (pciehp_unconfigure_device(p_slot)) return 1; - device = func->device; + device = p_slot->device; - hp_slot = func->device - ctrl->slot_device_offset; + hp_slot = p_slot->device - ctrl->slot_device_offset; p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); 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; - func->configured = 0; + p_slot->status = 0x01; /* Wait for exclusive access to hardware */ down(&ctrl->crit_sect); @@ -1328,56 +411,6 @@ static u32 remove_board(struct pci_func *func, struct controller *ctrl) /* Done with exclusive hardware access */ up(&ctrl->crit_sect); - 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); - bridge_slot_remove(func); - } else { - dbg("PCI Function Hot-Remove s:b:d:f(%02x:%02x:%02x:%02x)\n", - ctrl->seg, func->bus, func->device, func->function); - slot_remove(func); - } - - func = pciehp_slot_find(ctrl->slot_bus, device, 0); - } - - /* Setup slot structure with entry for empty slot */ - func = pciehp_slot_create(ctrl->slot_bus); - - if (func == NULL) { - return 1; - } - - func->bus = ctrl->slot_bus; - func->device = device; - func->function = 0; - func->configured = 0; - func->switch_save = 0x10; - func->is_a_board = 0; - } - return 0; } @@ -1411,13 +444,15 @@ static void pciehp_pushbutton_thread(unsigned long slot) p_slot->hpc_ops->get_power_status(p_slot, &getstatus); if (getstatus) { p_slot->state = POWEROFF_STATE; - dbg("In power_down_board, b:d(%x:%x)\n", p_slot->bus, p_slot->device); + dbg("%s: disabling bus:device(%x:%x)\n", __FUNCTION__, + p_slot->bus, p_slot->device); pciehp_disable_slot(p_slot); p_slot->state = STATIC_STATE; } else { p_slot->state = POWERON_STATE; - dbg("In add_board, b:d(%x:%x)\n", p_slot->bus, p_slot->device); + dbg("%s: adding bus:device(%x:%x)\n", __FUNCTION__, + p_slot->bus, p_slot->device); if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl->ctrlcap)) { /* Wait for exclusive access to hardware */ @@ -1459,13 +494,15 @@ static void pciehp_surprise_rm_thread(unsigned long slot) p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); if (!getstatus) { p_slot->state = POWEROFF_STATE; - dbg("In removing board, b:d(%x:%x)\n", p_slot->bus, p_slot->device); + dbg("%s: removing bus:device(%x:%x)\n", + __FUNCTION__, p_slot->bus, p_slot->device); pciehp_disable_slot(p_slot); p_slot->state = STATIC_STATE; } else { p_slot->state = POWERON_STATE; - dbg("In add_board, b:d(%x:%x)\n", p_slot->bus, p_slot->device); + dbg("%s: adding bus:device(%x:%x)\n", + __FUNCTION__, p_slot->bus, p_slot->device); if (pciehp_enable_slot(p_slot) && PWR_LED(p_slot->ctrl->ctrlcap)) { /* Wait for exclusive access to hardware */ @@ -1531,7 +568,6 @@ int pciehp_event_start_thread(void) err ("Can't start up our event thread\n"); return -1; } - dbg("Our event thread pid = %d\n", pid); return 0; } @@ -1539,9 +575,7 @@ int pciehp_event_start_thread(void) void pciehp_event_stop_thread(void) { event_finished = 1; - dbg("event_thread finish command given\n"); up(&event_semaphore); - dbg("wait for event_thread to exit\n"); down(&event_exit); } @@ -1573,7 +607,6 @@ static void interrupt_event_handler(struct controller *ctrl) { int loop = 0; int change = 1; - struct pci_func *func; u8 hp_slot; u8 getstatus; struct slot *p_slot; @@ -1581,16 +614,12 @@ static void interrupt_event_handler(struct controller *ctrl) while (change) { change = 0; - for (loop = 0; loop < 10; loop++) { + for (loop = 0; loop < MAX_EVENTS; loop++) { if (ctrl->event_queue[loop].event_type != 0) { hp_slot = ctrl->event_queue[loop].hp_slot; - func = pciehp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0); - p_slot = pciehp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); - dbg("hp_slot %d, func %p, p_slot %p\n", hp_slot, func, p_slot); - if (ctrl->event_queue[loop].event_type == INT_BUTTON_CANCEL) { dbg("button cancel\n"); del_timer(&p_slot->task_event); @@ -1682,7 +711,6 @@ static void interrupt_event_handler(struct controller *ctrl) p_slot->task_event.function = (void (*)(unsigned long)) pushbutton_helper_thread; p_slot->task_event.data = (unsigned long) p_slot; - dbg("add_timer p_slot = %p\n", (void *) p_slot); add_timer(&p_slot->task_event); } } @@ -1737,13 +765,6 @@ int pciehp_enable_slot(struct slot *p_slot) { u8 getstatus = 0; int rc; - struct pci_func *func; - - func = pciehp_slot_find(p_slot->bus, p_slot->device, 0); - if (!func) { - dbg("%s: Error! slot NULL\n", __FUNCTION__); - return 1; - } /* Check to see if (latch closed, card present, power off) */ down(&p_slot->ctrl->crit_sect); @@ -1773,45 +794,11 @@ int pciehp_enable_slot(struct slot *p_slot) } up(&p_slot->ctrl->crit_sect); - slot_remove(func); - - func = pciehp_slot_create(p_slot->bus); - if (func == NULL) - return 1; - - func->bus = p_slot->bus; - func->device = p_slot->device; - func->function = 0; - func->configured = 0; - func->is_a_board = 1; - - /* We have to save the presence info for these slots */ - p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save)); p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); - func->switch_save = !getstatus? 0x10:0; - rc = board_added(func, p_slot->ctrl); + rc = board_added(p_slot); if (rc) { - if (is_bridge(func)) - bridge_slot_remove(func); - else - slot_remove(func); - - /* Setup slot structure with entry for empty slot */ - func = pciehp_slot_create(p_slot->bus); - if (func == NULL) - return 1; /* Out of memory */ - - func->bus = p_slot->bus; - func->device = p_slot->device; - func->function = 0; - func->configured = 0; - func->is_a_board = 1; - - /* We have to save the presence info for these slots */ - p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save)); p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); - func->switch_save = !getstatus? 0x10:0; } if (p_slot) @@ -1823,14 +810,8 @@ int pciehp_enable_slot(struct slot *p_slot) int pciehp_disable_slot(struct slot *p_slot) { - u8 class_code, header_type, BCR; - u8 index = 0; u8 getstatus = 0; - u32 rc = 0; int ret = 0; - unsigned int devfn; - struct pci_bus *pci_bus = p_slot->ctrl->pci_dev->subordinate; - struct pci_func *func; if (!p_slot->ctrl) return 1; @@ -1867,838 +848,8 @@ int pciehp_disable_slot(struct slot *p_slot) up(&p_slot->ctrl->crit_sect); - func = pciehp_slot_find(p_slot->bus, p_slot->device, index++); - - /* Make sure there are no video controllers here - * for all func of p_slot - */ - while (func && !rc) { - pci_bus->number = func->bus; - devfn = PCI_DEVFN(func->device, func->function); - - /* Check the Class Code */ - rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code); - if (rc) - return rc; - - if (class_code == PCI_BASE_CLASS_DISPLAY) { - /* Display/Video adapter (not supported) */ - rc = REMOVE_NOT_SUPPORTED; - } else { - /* See if it's a bridge */ - rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &header_type); - if (rc) - return rc; - - /* If it's a bridge, check the VGA Enable bit */ - if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { - rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_BRIDGE_CONTROL, &BCR); - if (rc) - return rc; - - /* If the VGA Enable bit is set, remove isn't supported */ - if (BCR & PCI_BRIDGE_CTL_VGA) { - rc = REMOVE_NOT_SUPPORTED; - } - } - } - - func = pciehp_slot_find(p_slot->bus, p_slot->device, index++); - } - - func = pciehp_slot_find(p_slot->bus, p_slot->device, 0); - if ((func != NULL) && !rc) { - rc = remove_board(func, p_slot->ctrl); - } else if (!rc) - rc = 1; - - if (p_slot) - update_slot_info(p_slot); - - 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; + ret = remove_board(p_slot); + update_slot_info(p_slot); + return ret; } -/** - * 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; -} |