X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fpci%2Fhotplug%2Fshpchp_ctrl.c;h=4e6381481c5501a30d84ece1e4e3b98917496ea2;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=490a9553a0625175d7ba02783988f6915fbc57b7;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git diff --git a/drivers/pci/hotplug/shpchp_ctrl.c b/drivers/pci/hotplug/shpchp_ctrl.c index 490a9553a..4e6381481 100644 --- a/drivers/pci/hotplug/shpchp_ctrl.c +++ b/drivers/pci/hotplug/shpchp_ctrl.c @@ -23,90 +23,59 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * - * Send feedback to , + * Send feedback to , * */ -#include #include #include #include -#include -#include -#include -#include -#include #include #include +#include +#include "../pci.h" #include "shpchp.h" -#include "shpchprm.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 void interrupt_event_handler(void *data); +static int shpchp_enable_slot(struct slot *p_slot); +static int shpchp_disable_slot(struct slot *p_slot); + +static int queue_interrupt_event(struct slot *p_slot, u32 event_type) +{ + struct event_info *info; + + info = kmalloc(sizeof(*info), GFP_ATOMIC); + if (!info) + return -ENOMEM; + + info->event_type = event_type; + info->p_slot = p_slot; + INIT_WORK(&info->work, interrupt_event_handler, info); -static struct semaphore event_semaphore; /* mutex for process loop (up if something to process) */ -static struct semaphore event_exit; /* guard ensure thread has exited before calling it quits */ -static int event_finished; -static unsigned long pushbutton_pending; /* = 0 */ + schedule_work(&info->work); -u8 shpchp_disk_irq; -u8 shpchp_nic_irq; + return 0; +} u8 shpchp_handle_attention_button(u8 hp_slot, void *inst_id) { struct controller *ctrl = (struct controller *) inst_id; struct slot *p_slot; - u8 rc = 0; - u8 getstatus; - struct pci_func *func; - struct event_info *taskInfo; + u32 event_type; /* Attention Button Change */ dbg("shpchp: Attention button interrupt received.\n"); - func = shpchp_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 = shpchp_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; - taskInfo->hp_slot = hp_slot; - - rc++; + p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); /* * Button pressed - See if need to TAKE ACTION!!! */ info("Button pressed on Slot(%d)\n", ctrl->first_slot + hp_slot); - taskInfo->event_type = INT_BUTTON_PRESS; + event_type = INT_BUTTON_PRESS; - if ((p_slot->state == BLINKINGON_STATE) - || (p_slot->state == BLINKINGOFF_STATE)) { - /* Cancel if we are still blinking; this means that we press the - * attention again before the 5 sec. limit expires to cancel hot-add - * or hot-remove - */ - taskInfo->event_type = INT_BUTTON_CANCEL; - info("Button cancel on Slot(%d)\n", ctrl->first_slot + hp_slot); - } else if ((p_slot->state == POWERON_STATE) - || (p_slot->state == POWEROFF_STATE)) { - /* Ignore if the slot is on power-on or power-off state; this - * means that the previous attention button action to hot-add or - * hot-remove is undergoing - */ - taskInfo->event_type = INT_BUTTON_IGNORE; - info("Button ignore on Slot(%d)\n", ctrl->first_slot + hp_slot); - } - - if (rc) - up(&event_semaphore); /* signal event thread that new event is posted */ + queue_interrupt_event(p_slot, event_type); return 0; @@ -116,39 +85,26 @@ u8 shpchp_handle_switch_change(u8 hp_slot, void *inst_id) { struct controller *ctrl = (struct controller *) inst_id; struct slot *p_slot; - u8 rc = 0; u8 getstatus; - struct pci_func *func; - struct event_info *taskInfo; + u32 event_type; /* Switch Change */ dbg("shpchp: Switch interrupt received.\n"); - func = shpchp_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; - taskInfo->hp_slot = hp_slot; - - rc++; p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); - p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save)); + p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); dbg("%s: Card present %x Power status %x\n", __FUNCTION__, - func->presence_save, func->pwr_save); + p_slot->presence_save, p_slot->pwr_save); if (getstatus) { /* * Switch opened */ info("Latch open on Slot(%d)\n", ctrl->first_slot + hp_slot); - func->switch_save = 0; - taskInfo->event_type = INT_SWITCH_OPEN; - if (func->pwr_save && func->presence_save) { - taskInfo->event_type = INT_POWER_FAULT; + event_type = INT_SWITCH_OPEN; + if (p_slot->pwr_save && p_slot->presence_save) { + event_type = INT_POWER_FAULT; err("Surprise Removal of card\n"); } } else { @@ -156,85 +112,57 @@ u8 shpchp_handle_switch_change(u8 hp_slot, void *inst_id) * Switch closed */ info("Latch close on Slot(%d)\n", ctrl->first_slot + hp_slot); - func->switch_save = 0x10; - taskInfo->event_type = INT_SWITCH_CLOSE; + event_type = INT_SWITCH_CLOSE; } - if (rc) - up(&event_semaphore); /* signal event thread that new event is posted */ + queue_interrupt_event(p_slot, event_type); - return rc; + return 1; } u8 shpchp_handle_presence_change(u8 hp_slot, void *inst_id) { struct controller *ctrl = (struct controller *) inst_id; struct slot *p_slot; - u8 rc = 0; - /*u8 temp_byte;*/ - struct pci_func *func; - struct event_info *taskInfo; + u32 event_type; /* Presence Change */ dbg("shpchp: Presence/Notify input change.\n"); - func = shpchp_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; - taskInfo->hp_slot = hp_slot; - - rc++; p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); /* * 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, &(p_slot->presence_save)); + if (p_slot->presence_save) { /* * Card Present */ info("Card present on Slot(%d)\n", ctrl->first_slot + hp_slot); - taskInfo->event_type = INT_PRESENCE_ON; + event_type = INT_PRESENCE_ON; } else { /* * Not Present */ info("Card not present on Slot(%d)\n", ctrl->first_slot + hp_slot); - taskInfo->event_type = INT_PRESENCE_OFF; + event_type = INT_PRESENCE_OFF; } - if (rc) - up(&event_semaphore); /* signal event thread that new event is posted */ + queue_interrupt_event(p_slot, event_type); - return rc; + return 1; } u8 shpchp_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; + u32 event_type; /* Power fault */ dbg("shpchp: Power fault interrupt received.\n"); - func = shpchp_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; - taskInfo->hp_slot = hp_slot; - - rc++; p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) { @@ -242,2607 +170,551 @@ u8 shpchp_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; - taskInfo->event_type = INT_POWER_FAULT_CLEAR; + p_slot->status = 0x00; + event_type = INT_POWER_FAULT_CLEAR; } else { /* * Power fault */ info("Power fault on Slot(%d)\n", ctrl->first_slot + hp_slot); - taskInfo->event_type = INT_POWER_FAULT; + 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) - up(&event_semaphore); /* signal event thread that new event is posted */ - return rc; -} + queue_interrupt_event(p_slot, event_type); + return 1; +} -/* - * sort_by_size - * - * Sorts nodes on the list by their length. - * Smallest first. - * +/* The following routines constitute the bulk of the + hotplug controller logic */ -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); +static int change_bus_speed(struct controller *ctrl, struct slot *p_slot, + enum pci_bus_speed speed) +{ + int rc = 0; - while (out_of_order) { - out_of_order = 0; + dbg("%s: change to speed %d\n", __FUNCTION__, speed); + if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, speed))) { + err("%s: Issue of set bus speed mode command failed\n", + __FUNCTION__); + return WRONG_BUS_FREQUENCY; + } + return rc; +} - /* 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; - } +static int fix_bus_speed(struct controller *ctrl, struct slot *pslot, + u8 flag, enum pci_bus_speed asp, enum pci_bus_speed bsp, + enum pci_bus_speed msp) +{ + int rc = 0; - 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; + /* + * If other slots on the same bus are occupied, we cannot + * change the bus speed. + */ + if (flag) { + if (asp < bsp) { + err("%s: speed of bus %x and adapter %x mismatch\n", + __FUNCTION__, bsp, asp); + rc = WRONG_BUS_FREQUENCY; } - } /* End of out_of_order loop */ + return rc; + } - return(0); + if (asp < msp) { + if (bsp != asp) + rc = change_bus_speed(ctrl, pslot, asp); + } else { + if (bsp != msp) + rc = change_bus_speed(ctrl, pslot, msp); + } + return rc; } - -/* - * sort_by_max_size +/** + * board_added - Called after a board has been added to the system. * - * Sorts nodes on the list by their length. - * Largest first. + * Turns power on for the board + * Configures board * */ -static int sort_by_max_size(struct pci_resource **head) +static int board_added(struct slot *p_slot) { - struct pci_resource *current_res; - struct pci_resource *next_res; - int out_of_order = 1; - - if (!(*head)) - return(1); + u8 hp_slot; + u8 slots_not_empty = 0; + int rc = 0; + enum pci_bus_speed asp, bsp, msp; + struct controller *ctrl = p_slot->ctrl; - if (!((*head)->next)) - return(0); + hp_slot = p_slot->device - ctrl->slot_device_offset; - while (out_of_order) { - out_of_order = 0; + dbg("%s: p_slot->device, slot_offset, hp_slot = %d, %d ,%d\n", + __FUNCTION__, p_slot->device, + ctrl->slot_device_offset, hp_slot); - /* 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; + /* Power on slot without connecting to bus */ + rc = p_slot->hpc_ops->power_on_slot(p_slot); + if (rc) { + err("%s: Failed to power on slot\n", __FUNCTION__); + return -1; + } + + if ((ctrl->pci_dev->vendor == 0x8086) && (ctrl->pci_dev->device == 0x0332)) { + if (slots_not_empty) + return WRONG_BUS_FREQUENCY; + + if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, PCI_SPEED_33MHz))) { + err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__); + return WRONG_BUS_FREQUENCY; } - - 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; + + /* turn on board, blink green LED, turn off Amber LED */ + if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { + err("%s: Issue of Slot Enable command failed\n", __FUNCTION__); + return rc; } - } /* End of out_of_order loop */ - - return(0); -} + } + + rc = p_slot->hpc_ops->get_adapter_speed(p_slot, &asp); + if (rc) { + err("%s: Can't get adapter speed or bus mode mismatch\n", + __FUNCTION__); + return WRONG_BUS_FREQUENCY; + } + rc = p_slot->hpc_ops->get_cur_bus_speed(p_slot, &bsp); + if (rc) { + err("%s: Can't get bus operation speed\n", __FUNCTION__); + return WRONG_BUS_FREQUENCY; + } -/* - * do_pre_bridge_resource_split - * - * Returns zero or one node of resources that aren't in use - * - */ -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"); + rc = p_slot->hpc_ops->get_max_bus_speed(p_slot, &msp); + if (rc) { + err("%s: Can't get max bus operation speed\n", __FUNCTION__); + msp = bsp; + } - if (!(*head) || !(*orig_head)) - return(NULL); + /* Check if there are other slots or devices on the same bus */ + if (!list_empty(&ctrl->pci_dev->subordinate->devices)) + slots_not_empty = 1; - rc = shpchp_resource_sort_and_combine(head); + dbg("%s: slots_not_empty %d, adapter_speed %d, bus_speed %d, " + "max_bus_speed %d\n", __FUNCTION__, slots_not_empty, asp, + bsp, msp); + rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, asp, bsp, msp); 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(*split_node), GFP_KERNEL); - - if (!split_node) - return(NULL); - - temp_dword = (node->length | (alignment-1)) + 1 - alignment; + return rc; - split_node->base = node->base; - split_node->length = temp_dword; + /* turn on board, blink green LED, turn off Amber LED */ + if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { + err("%s: Issue of Slot Enable command failed\n", __FUNCTION__); + return rc; + } - node->length -= temp_dword; - node->base += split_node->length; + /* Wait for ~1 second */ + msleep(1000); - /* Put it in the list */ - *head = split_node; - split_node->next = node; + dbg("%s: slot status = %x\n", __FUNCTION__, p_slot->status); + /* Check for a power fault */ + if (p_slot->status == 0xFF) { + /* power fault occurred, but it was benign */ + dbg("%s: power fault\n", __FUNCTION__); + rc = POWER_FAILURE; + p_slot->status = 0; + goto err_exit; } - if (node->length < alignment) { - return(NULL); + if (shpchp_configure_device(p_slot)) { + err("Cannot add device at 0x%x:0x%x\n", p_slot->bus, + p_slot->device); + goto err_exit; } - /* Now unlink it */ - if (*head == node) { - *head = node->next; - node->next = NULL; - } else { - prevnode = *head; - while (prevnode->next != node) - prevnode = prevnode->next; + p_slot->status = 0; + p_slot->is_a_board = 0x01; + p_slot->pwr_save = 1; + + p_slot->hpc_ops->green_led_on(p_slot); + + return 0; - prevnode->next = node->next; - node->next = NULL; +err_exit: + /* turn off slot, turn on Amber LED, turn off Green LED */ + rc = p_slot->hpc_ops->slot_disable(p_slot); + if (rc) { + err("%s: Issue of Slot Disable command failed\n", __FUNCTION__); + return rc; } - return(node); + return(rc); } -/* - * do_bridge_resource_split - * - * Returns zero or one node of resources that aren't in use +/** + * remove_board - Turns off slot and LED's * */ -static struct pci_resource *do_bridge_resource_split (struct pci_resource **head, u32 alignment) +static int remove_board(struct slot *p_slot) { - struct pci_resource *prevnode = NULL; - struct pci_resource *node; - u32 rc; - u32 temp_dword; - - if (!(*head)) - return(NULL); + struct controller *ctrl = p_slot->ctrl; + u8 hp_slot; + int rc; - rc = shpchp_resource_sort_and_combine(head); + if (shpchp_unconfigure_device(p_slot)) + return(1); - if (rc) - return(NULL); + hp_slot = p_slot->device - ctrl->slot_device_offset; + p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); - node = *head; + dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot); - while (node->next) { - prevnode = node; - node = node->next; - kfree(prevnode); - } + /* Change status to shutdown */ + if (p_slot->is_a_board) + p_slot->status = 0x01; - if (node->length < alignment) { - kfree(node); - return(NULL); + /* turn off slot, turn on Amber LED, turn off Green LED */ + rc = p_slot->hpc_ops->slot_disable(p_slot); + if (rc) { + err("%s: Issue of Slot Disable command failed\n", __FUNCTION__); + return rc; } - - 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; + + rc = p_slot->hpc_ops->set_attention_status(p_slot, 0); + if (rc) { + err("%s: Issue of Set Attention command failed\n", __FUNCTION__); + return rc; } - if (node->length & (alignment - 1)) { - /* There's stuff in use after this node */ - kfree(node); - return(NULL); - } + p_slot->pwr_save = 0; + p_slot->is_a_board = 0; - return(node); + return 0; } -/* - * get_io_resource +struct pushbutton_work_info { + struct slot *p_slot; + struct work_struct work; +}; + +/** + * shpchp_pushbutton_thread * - * 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. + * Scheduled procedure to handle blocking stuff for the pushbuttons + * Handles all pending events and exits. * - * size must be a power of two. */ -static struct pci_resource *get_io_resource (struct pci_resource **head, u32 size) +static void shpchp_pushbutton_thread(void *data) { - struct pci_resource *prevnode; - struct pci_resource *node; - struct pci_resource *split_node = NULL; - u32 temp_dword; - - if (!(*head)) - return(NULL); - - if ( shpchp_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(*split_node), 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(*split_node), 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; + struct pushbutton_work_info *info = data; + struct slot *p_slot = info->p_slot; - prevnode->next = node->next; - } - node->next = NULL; - /* Stop looping */ + mutex_lock(&p_slot->lock); + switch (p_slot->state) { + case POWEROFF_STATE: + mutex_unlock(&p_slot->lock); + shpchp_disable_slot(p_slot); + mutex_lock(&p_slot->lock); + p_slot->state = STATIC_STATE; + break; + case POWERON_STATE: + mutex_unlock(&p_slot->lock); + if (shpchp_enable_slot(p_slot)) + p_slot->hpc_ops->green_led_off(p_slot); + mutex_lock(&p_slot->lock); + p_slot->state = STATIC_STATE; + break; + default: break; } + mutex_unlock(&p_slot->lock); - return(node); + kfree(info); } - -/* - * 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) +void queue_pushbutton_work(void *data) { - 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 (shpchp_resource_sort_and_combine(head)) - return(NULL); - - if (sort_by_max_size(head)) - return(NULL); + struct slot *p_slot = data; + struct pushbutton_work_info *info; - 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; + info = kmalloc(sizeof(*info), GFP_KERNEL); + if (!info) { + err("%s: Cannot allocate memory\n", __FUNCTION__); + return; + } + info->p_slot = p_slot; + INIT_WORK(&info->work, shpchp_pushbutton_thread, info); - split_node = kmalloc(sizeof(*split_node), GFP_KERNEL); + mutex_lock(&p_slot->lock); + switch (p_slot->state) { + case BLINKINGOFF_STATE: + p_slot->state = POWEROFF_STATE; + break; + case BLINKINGON_STATE: + p_slot->state = POWERON_STATE; + break; + default: + goto out; + } + queue_work(shpchp_wq, &info->work); + out: + mutex_unlock(&p_slot->lock); +} - if (!split_node) - return(NULL); +static int update_slot_info (struct slot *slot) +{ + struct hotplug_slot_info *info; + int result; - split_node->base = max->base; - split_node->length = temp_dword - max->base; - max->base = temp_dword; - max->length -= split_node->length; + info = kmalloc(sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; - /* Put it next in the list */ - split_node->next = max->next; - max->next = split_node; - } + slot->hpc_ops->get_power_status(slot, &(info->power_status)); + slot->hpc_ops->get_attention_status(slot, &(info->attention_status)); + slot->hpc_ops->get_latch_status(slot, &(info->latch_status)); + slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status)); - 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(*split_node), 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; - } + result = pci_hp_change_slot_info(slot->hotplug_slot, info); + kfree (info); + return result; +} - /* 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(*split_node), - 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; - } - } +/* + * Note: This function must be called with slot->lock held + */ +static void handle_button_press_event(struct slot *p_slot) +{ + u8 getstatus; - /* Now take it out of the list */ - temp = (struct pci_resource*) *head; - if (temp == max) { - *head = max->next; + switch (p_slot->state) { + case STATIC_STATE: + p_slot->hpc_ops->get_power_status(p_slot, &getstatus); + if (getstatus) { + p_slot->state = BLINKINGOFF_STATE; + info(msg_button_off, p_slot->number); } else { - while (temp && temp->next != max) { - temp = temp->next; - } - - temp->next = max->next; + p_slot->state = BLINKINGON_STATE; + info(msg_button_on, p_slot->number); } + /* blink green LED and turn off amber */ + p_slot->hpc_ops->green_led_blink(p_slot); + p_slot->hpc_ops->set_attention_status(p_slot, 0); - max->next = NULL; - return(max); + schedule_delayed_work(&p_slot->work, 5*HZ); + break; + case BLINKINGOFF_STATE: + case BLINKINGON_STATE: + /* + * Cancel if we are still blinking; this means that we + * press the attention again before the 5 sec. limit + * expires to cancel hot-add or hot-remove + */ + info("Button cancel on Slot(%s)\n", p_slot->name); + dbg("%s: button cancel\n", __FUNCTION__); + cancel_delayed_work(&p_slot->work); + if (p_slot->state == BLINKINGOFF_STATE) + p_slot->hpc_ops->green_led_on(p_slot); + else + p_slot->hpc_ops->green_led_off(p_slot); + p_slot->hpc_ops->set_attention_status(p_slot, 0); + info(msg_button_cancel, p_slot->number); + p_slot->state = STATIC_STATE; + break; + case POWEROFF_STATE: + case POWERON_STATE: + /* + * Ignore if the slot is on power-on or power-off state; + * this means that the previous attention button action + * to hot-add or hot-remove is undergoing + */ + info("Button ignore on Slot(%s)\n", p_slot->name); + update_slot_info(p_slot); + break; + default: + warn("Not a valid state\n"); + break; } - - /* 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) +static void interrupt_event_handler(void *data) { - struct pci_resource *prevnode; - struct pci_resource *node; - struct pci_resource *split_node; - u32 temp_dword; - - if (!(*head)) - return(NULL); - - if ( shpchp_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(*split_node), 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(*split_node), 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; + struct event_info *info = data; + struct slot *p_slot = info->p_slot; - prevnode->next = node->next; - } - node->next = NULL; - /* Stop looping */ + mutex_lock(&p_slot->lock); + switch (info->event_type) { + case INT_BUTTON_PRESS: + handle_button_press_event(p_slot); + break; + case INT_POWER_FAULT: + dbg("%s: power fault\n", __FUNCTION__); + p_slot->hpc_ops->set_attention_status(p_slot, 1); + p_slot->hpc_ops->green_led_off(p_slot); + break; + default: + update_slot_info(p_slot); break; } - return(node); + mutex_unlock(&p_slot->lock); + + kfree(info); } -/* - * shpchp_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 shpchp_resource_sort_and_combine(struct pci_resource **head) +static int shpchp_enable_slot (struct slot *p_slot) { - 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); -} - - -/** - * shpchp_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 *shpchp_slot_create(u8 busnumber) -{ - struct pci_func *new_slot; - struct pci_func *next; - - new_slot = kmalloc(sizeof(*new_slot), 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 (shpchp_slot_list[busnumber] == NULL) { - shpchp_slot_list[busnumber] = new_slot; - } else { - next = shpchp_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 = shpchp_slot_list[old_slot->bus]; - - if (next == NULL) { - return(1); - } - - if (next == old_slot) { - shpchp_slot_list[old_slot->bus] = old_slot->next; - shpchp_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; - shpchp_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 = shpchp_slot_list[tempBus]; - - while (!slot_remove(next)) { - next = shpchp_slot_list[tempBus]; - } - } - - next = shpchp_slot_list[bridge->bus]; - - if (next == NULL) { - return(1); - } - - if (next == bridge) { - shpchp_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); -} - - -/** - * shpchp_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 *shpchp_slot_find(u8 bus, u8 device, u8 index) -{ - int found = -1; - struct pci_func *func; - - func = shpchp_slot_list[bus]; - - if ((func == NULL) || ((func->device == device) && (index == 0))) - return(func); - - if (func->device == device) - found++; - - while (func->next != NULL) { - func = func->next; - - if (func->device == device) - found++; - - if (found == index) - 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 - */ -static u32 change_bus_speed(struct controller *ctrl, struct slot *p_slot, enum pci_bus_speed speed) -{ - u32 rc = 0; - - dbg("%s: change to speed %d\n", __FUNCTION__, speed); - down(&ctrl->crit_sect); - if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, speed))) { - err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__); - up(&ctrl->crit_sect); - return WRONG_BUS_FREQUENCY; - } - wait_for_ctrl_irq (ctrl); - - if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) { - err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n", - __FUNCTION__); - err("%s: Error code (%d)\n", __FUNCTION__, rc); - up(&ctrl->crit_sect); - return WRONG_BUS_FREQUENCY; - } - up(&ctrl->crit_sect); - return rc; -} - -static u32 fix_bus_speed(struct controller *ctrl, struct slot *pslot, u8 flag, -enum pci_bus_speed asp, enum pci_bus_speed bsp, enum pci_bus_speed msp) -{ - u32 rc = 0; - - if (flag != 0) { /* Other slots on the same bus are occupied */ - if ( asp < bsp ) { - err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bsp, asp); - return WRONG_BUS_FREQUENCY; - } - } else { - /* Other slots on the same bus are empty */ - if (msp == bsp) { - /* if adapter_speed >= bus_speed, do nothing */ - if (asp < bsp) { - /* - * Try to lower bus speed to accommodate the adapter if other slots - * on the same controller are empty - */ - if ((rc = change_bus_speed(ctrl, pslot, asp))) - return rc; - } - } else { - if (asp < msp) { - if ((rc = change_bus_speed(ctrl, pslot, asp))) - return rc; - } else { - if ((rc = change_bus_speed(ctrl, pslot, msp))) - return rc; - } - } - } - return rc; -} - -/** - * board_added - Called after a board has been added to the system. - * - * Turns power on for the board - * Configures board - * - */ -static u32 board_added(struct pci_func * func, struct controller * ctrl) -{ - u8 hp_slot; - u8 slots_not_empty = 0; - int index; - u32 temp_register = 0xFFFFFFFF; - u32 retval, rc = 0; - struct pci_func *new_func = NULL; - struct slot *p_slot; - struct resource_lists res_lists; - enum pci_bus_speed adapter_speed, bus_speed, max_bus_speed; - u8 pi, mode; - - p_slot = shpchp_find_slot(ctrl, func->device); - hp_slot = func->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); - - /* Wait for exclusive access to hardware */ - down(&ctrl->crit_sect); - - /* Power on slot without connecting to bus */ - rc = p_slot->hpc_ops->power_on_slot(p_slot); - if (rc) { - err("%s: Failed to power on slot\n", __FUNCTION__); - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - return -1; - } - - /* Wait for the command to complete */ - wait_for_ctrl_irq (ctrl); - - rc = p_slot->hpc_ops->check_cmd_status(ctrl); - if (rc) { - err("%s: Failed to power on slot, error code(%d)\n", __FUNCTION__, rc); - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - return -1; - } - - - if ((ctrl->pci_dev->vendor == 0x8086) && (ctrl->pci_dev->device == 0x0332)) { - if (slots_not_empty) - return WRONG_BUS_FREQUENCY; - - if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, PCI_SPEED_33MHz))) { - err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__); - up(&ctrl->crit_sect); - return WRONG_BUS_FREQUENCY; - } - wait_for_ctrl_irq (ctrl); - - if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) { - err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n", - __FUNCTION__); - err("%s: Error code (%d)\n", __FUNCTION__, rc); - up(&ctrl->crit_sect); - return WRONG_BUS_FREQUENCY; - } - /* turn on board, blink green LED, turn off Amber LED */ - if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { - err("%s: Issue of Slot Enable command failed\n", __FUNCTION__); - up(&ctrl->crit_sect); - return rc; - } - wait_for_ctrl_irq (ctrl); - - if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) { - err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__, rc); - up(&ctrl->crit_sect); - return rc; - } - } - - rc = p_slot->hpc_ops->get_adapter_speed(p_slot, &adapter_speed); - /* 0 = PCI 33Mhz, 1 = PCI 66 Mhz, 2 = PCI-X 66 PA, 4 = PCI-X 66 ECC, */ - /* 5 = PCI-X 133 PA, 7 = PCI-X 133 ECC, 0xa = PCI-X 133 Mhz 266, */ - /* 0xd = PCI-X 133 Mhz 533 */ - /* This encoding is different from the one used in cur_bus_speed & */ - /* max_bus_speed */ - - if (rc || adapter_speed == PCI_SPEED_UNKNOWN) { - err("%s: Can't get adapter speed or bus mode mismatch\n", __FUNCTION__); - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - return WRONG_BUS_FREQUENCY; - } - - rc = p_slot->hpc_ops->get_cur_bus_speed(p_slot, &bus_speed); - if (rc || bus_speed == PCI_SPEED_UNKNOWN) { - err("%s: Can't get bus operation speed\n", __FUNCTION__); - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - return WRONG_BUS_FREQUENCY; - } - - rc = p_slot->hpc_ops->get_max_bus_speed(p_slot, &max_bus_speed); - if (rc || max_bus_speed == PCI_SPEED_UNKNOWN) { - err("%s: Can't get max bus operation speed\n", __FUNCTION__); - max_bus_speed = bus_speed; - } - - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - - if ((rc = p_slot->hpc_ops->get_prog_int(p_slot, &pi))) { - err("%s: Can't get controller programming interface, set it to 1\n", __FUNCTION__); - pi = 1; - } - - /* Check if there are other slots or devices on the same bus */ - if (!list_empty(&ctrl->pci_dev->subordinate->devices)) - slots_not_empty = 1; - - dbg("%s: slots_not_empty %d, pi %d\n", __FUNCTION__, - slots_not_empty, pi); - dbg("adapter_speed %d, bus_speed %d, max_bus_speed %d\n", - adapter_speed, bus_speed, max_bus_speed); - - if (pi == 2) { - dbg("%s: In PI = %d\n", __FUNCTION__, pi); - if ((rc = p_slot->hpc_ops->get_mode1_ECC_cap(p_slot, &mode))) { - err("%s: Can't get Mode1_ECC, set mode to 0\n", __FUNCTION__); - mode = 0; - } - - switch (adapter_speed) { - case PCI_SPEED_133MHz_PCIX_533: - case PCI_SPEED_133MHz_PCIX_266: - if ((bus_speed != adapter_speed) && - ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) - return rc; - break; - case PCI_SPEED_133MHz_PCIX_ECC: - case PCI_SPEED_133MHz_PCIX: - if (mode) { /* Bus - Mode 1 ECC */ - if ((bus_speed != 0x7) && - ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) - return rc; - } else { - if ((bus_speed != 0x4) && - ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) - return rc; - } - break; - case PCI_SPEED_66MHz_PCIX_ECC: - case PCI_SPEED_66MHz_PCIX: - if (mode) { /* Bus - Mode 1 ECC */ - if ((bus_speed != 0x5) && - ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) - return rc; - } else { - if ((bus_speed != 0x2) && - ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) - return rc; - } - break; - case PCI_SPEED_66MHz: - if ((bus_speed != 0x1) && - ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) - return rc; - break; - case PCI_SPEED_33MHz: - if (bus_speed > 0x0) { - if (slots_not_empty == 0) { - if ((rc = change_bus_speed(ctrl, p_slot, adapter_speed))) - return rc; - } else { - err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bus_speed, adapter_speed); - return WRONG_BUS_FREQUENCY; - } - } - break; - default: - err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bus_speed, adapter_speed); - return WRONG_BUS_FREQUENCY; - } - } else { - /* If adpater_speed == bus_speed, nothing to do here */ - dbg("%s: In PI = %d\n", __FUNCTION__, pi); - if ((adapter_speed != bus_speed) && - ((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed)))) - return rc; - } - - down(&ctrl->crit_sect); - /* turn on board, blink green LED, turn off Amber LED */ - if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) { - err("%s: Issue of Slot Enable command failed\n", __FUNCTION__); - up(&ctrl->crit_sect); - return rc; - } - wait_for_ctrl_irq (ctrl); - - if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) { - err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__, rc); - up(&ctrl->crit_sect); - return rc; - } - - up(&ctrl->crit_sect); - - /* Wait for ~1 second */ - dbg("%s: before long_delay\n", __FUNCTION__); - wait_for_ctrl_irq (ctrl); - dbg("%s: after long_delay\n", __FUNCTION__); - - dbg("%s: func status = %x\n", __FUNCTION__, func->status); - /* Check for a power fault */ - if (func->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; - } - - /* 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; - - shpchp_resource_sort_and_combine(&(ctrl->mem_head)); - shpchp_resource_sort_and_combine(&(ctrl->p_mem_head)); - shpchp_resource_sort_and_combine(&(ctrl->io_head)); - shpchp_resource_sort_and_combine(&(ctrl->bus_head)); - - if (rc) { - /* Wait for exclusive access to hardware */ - down(&ctrl->crit_sect); - - /* turn off slot, turn on Amber LED, turn off Green LED */ - retval = p_slot->hpc_ops->slot_disable(p_slot); - if (retval) { - err("%s: Issue of Slot Enable command failed\n", __FUNCTION__); - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - return retval; - } - /* Wait for the command to complete */ - wait_for_ctrl_irq (ctrl); - - retval = p_slot->hpc_ops->check_cmd_status(ctrl); - if (retval) { - err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__, retval); - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - return retval; - } - - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - - return(rc); - } - shpchp_save_slot_config(ctrl, func); - - func->status = 0; - func->switch_save = 0x10; - func->is_a_board = 0x01; - func->pwr_save = 1; - - /* Next, we will instantiate the linux pci_dev structures - * (with appropriate driver notification, if already present) - */ - index = 0; - do { - new_func = shpchp_slot_find(ctrl->slot_bus, func->device, index++); - if (new_func && !new_func->pci_dev) { - dbg("%s:call pci_hp_configure_dev\n", __FUNCTION__); - shpchp_configure_device(ctrl, new_func); - } - } while (new_func); - - /* Wait for exclusive access to hardware */ - down(&ctrl->crit_sect); - - p_slot->hpc_ops->green_led_on(p_slot); - - /* Wait for the command to complete */ - wait_for_ctrl_irq (ctrl); - - - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - - } else { - /* Wait for exclusive access to hardware */ - down(&ctrl->crit_sect); - - /* turn off slot, turn on Amber LED, turn off Green LED */ - rc = p_slot->hpc_ops->slot_disable(p_slot); - if (rc) { - err("%s: Issue of Slot Disable command failed\n", __FUNCTION__); - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - return rc; - } - /* Wait for the command to complete */ - wait_for_ctrl_irq (ctrl); - - rc = p_slot->hpc_ops->check_cmd_status(ctrl); - if (rc) { - err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__, rc); - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - return rc; - } - - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - - return(rc); - } - return 0; -} - - -/** - * remove_board - Turns off slot and LED's - * - */ -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) - return(1); - - if (shpchp_unconfigure_device(func)) - return(1); - - device = func->device; - - hp_slot = func->device - ctrl->slot_device_offset; - p_slot = shpchp_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 = shpchp_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 = shpchp_save_used_resources(ctrl, func, DISABLE_CARD); - } - /* Change status to shutdown */ - if (func->is_a_board) - func->status = 0x01; - func->configured = 0; - - /* Wait for exclusive access to hardware */ - down(&ctrl->crit_sect); - - /* turn off slot, turn on Amber LED, turn off Green LED */ - rc = p_slot->hpc_ops->slot_disable(p_slot); - if (rc) { - err("%s: Issue of Slot Disable command failed\n", __FUNCTION__); - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - return rc; - } - /* Wait for the command to complete */ - wait_for_ctrl_irq (ctrl); - - rc = p_slot->hpc_ops->check_cmd_status(ctrl); - if (rc) { - err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__, rc); - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - return rc; - } - - rc = p_slot->hpc_ops->set_attention_status(p_slot, 0); - if (rc) { - err("%s: Issue of Set Attention command failed\n", __FUNCTION__); - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - return rc; - } - /* Wait for the command to complete */ - wait_for_ctrl_irq (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); - - shpchp_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; - - shpchp_resource_sort_and_combine(&(ctrl->mem_head)); - shpchp_resource_sort_and_combine(&(ctrl->p_mem_head)); - shpchp_resource_sort_and_combine(&(ctrl->io_head)); - shpchp_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 = shpchp_slot_find(ctrl->slot_bus, device, 0); - } - - /* Setup slot structure with entry for empty slot */ - func = shpchp_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->pwr_save = 0; - func->is_a_board = 0; - } - - return 0; -} - - -static void pushbutton_helper_thread (unsigned long data) -{ - pushbutton_pending = data; - - up(&event_semaphore); -} - - -/** - * shpchp_pushbutton_thread - * - * Scheduled procedure to handle blocking stuff for the pushbuttons - * Handles all pending events and exits. - * - */ -static void shpchp_pushbutton_thread (unsigned long slot) -{ - struct slot *p_slot = (struct slot *) slot; - u8 getstatus; - - pushbutton_pending = 0; - - if (!p_slot) { - dbg("%s: Error! slot NULL\n", __FUNCTION__); - return; - } - - p_slot->hpc_ops->get_power_status(p_slot, &getstatus); - if (getstatus) { - p_slot->state = POWEROFF_STATE; - dbg("In power_down_board, b:d(%x:%x)\n", p_slot->bus, p_slot->device); - - shpchp_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); - - if (shpchp_enable_slot(p_slot)) { - /* Wait for exclusive access to hardware */ - down(&p_slot->ctrl->crit_sect); - - p_slot->hpc_ops->green_led_off(p_slot); - - /* Wait for the command to complete */ - wait_for_ctrl_irq (p_slot->ctrl); - - /* Done with exclusive hardware access */ - up(&p_slot->ctrl->crit_sect); - } - p_slot->state = STATIC_STATE; - } - - return; -} - - -/* this is the main worker thread */ -static int event_thread(void* data) -{ - struct controller *ctrl; - lock_kernel(); - daemonize("shpchpd_event"); - unlock_kernel(); - - while (1) { - dbg("!!!!event_thread sleeping\n"); - down_interruptible (&event_semaphore); - dbg("event_thread woken finished = %d\n", event_finished); - if (event_finished || signal_pending(current)) - break; - /* Do stuff here */ - if (pushbutton_pending) - shpchp_pushbutton_thread(pushbutton_pending); - else - for (ctrl = shpchp_ctrl_list; ctrl; ctrl=ctrl->next) - interrupt_event_handler(ctrl); - } - dbg("event_thread signals exit\n"); - up(&event_exit); - return 0; -} - -int shpchp_event_start_thread (void) -{ - int pid; - - /* initialize our semaphores */ - init_MUTEX_LOCKED(&event_exit); - event_finished=0; - - init_MUTEX_LOCKED(&event_semaphore); - pid = kernel_thread(event_thread, NULL, 0); - - if (pid < 0) { - err ("Can't start up our event thread\n"); - return -1; - } - dbg("Our event thread pid = %d\n", pid); - return 0; -} - - -void shpchp_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); -} - - -static int update_slot_info (struct slot *slot) -{ - struct hotplug_slot_info *info; - int result; - - info = kmalloc(sizeof(*info), GFP_KERNEL); - if (!info) - return -ENOMEM; - - slot->hpc_ops->get_power_status(slot, &(info->power_status)); - slot->hpc_ops->get_attention_status(slot, &(info->attention_status)); - slot->hpc_ops->get_latch_status(slot, &(info->latch_status)); - slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status)); - - result = pci_hp_change_slot_info(slot->hotplug_slot, info); - kfree (info); - return result; -} - -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; - - dbg("%s:\n", __FUNCTION__); - while (change) { - change = 0; - - for (loop = 0; loop < 10; loop++) { - if (ctrl->event_queue[loop].event_type != 0) { - dbg("%s:loop %x event_type %x\n", __FUNCTION__, loop, - ctrl->event_queue[loop].event_type); - hp_slot = ctrl->event_queue[loop].hp_slot; - - func = shpchp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0); - - p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset); - - dbg("%s: hp_slot %d, func %p, p_slot %p\n", __FUNCTION__, hp_slot, func, p_slot); - - if (ctrl->event_queue[loop].event_type == INT_BUTTON_CANCEL) { - dbg("%s: button cancel\n", __FUNCTION__); - del_timer(&p_slot->task_event); - - switch (p_slot->state) { - case BLINKINGOFF_STATE: - /* Wait for exclusive access to hardware */ - down(&ctrl->crit_sect); - - p_slot->hpc_ops->green_led_on(p_slot); - /* Wait for the command to complete */ - wait_for_ctrl_irq (ctrl); - - p_slot->hpc_ops->set_attention_status(p_slot, 0); - - /* Wait for the command to complete */ - wait_for_ctrl_irq (ctrl); - - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - break; - case BLINKINGON_STATE: - /* Wait for exclusive access to hardware */ - down(&ctrl->crit_sect); - - p_slot->hpc_ops->green_led_off(p_slot); - /* Wait for the command to complete */ - wait_for_ctrl_irq (ctrl); - - p_slot->hpc_ops->set_attention_status(p_slot, 0); - /* Wait for the command to complete */ - wait_for_ctrl_irq (ctrl); - - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - - break; - default: - warn("Not a valid state\n"); - return; - } - info(msg_button_cancel, p_slot->number); - p_slot->state = STATIC_STATE; - } else if (ctrl->event_queue[loop].event_type == INT_BUTTON_PRESS) { - /* Button Pressed (No action on 1st press...) */ - dbg("%s: Button pressed\n", __FUNCTION__); - - p_slot->hpc_ops->get_power_status(p_slot, &getstatus); - if (getstatus) { - /* slot is on */ - dbg("%s: slot is on\n", __FUNCTION__); - p_slot->state = BLINKINGOFF_STATE; - info(msg_button_off, p_slot->number); - } else { - /* slot is off */ - dbg("%s: slot is off\n", __FUNCTION__); - p_slot->state = BLINKINGON_STATE; - info(msg_button_on, p_slot->number); - } - - /* Wait for exclusive access to hardware */ - down(&ctrl->crit_sect); - - /* blink green LED and turn off amber */ - p_slot->hpc_ops->green_led_blink(p_slot); - /* Wait for the command to complete */ - wait_for_ctrl_irq (ctrl); - - p_slot->hpc_ops->set_attention_status(p_slot, 0); - - /* Wait for the command to complete */ - wait_for_ctrl_irq (ctrl); - - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - - init_timer(&p_slot->task_event); - p_slot->task_event.expires = jiffies + 5 * HZ; /* 5 second delay */ - p_slot->task_event.function = (void (*)(unsigned long)) pushbutton_helper_thread; - p_slot->task_event.data = (unsigned long) p_slot; - - dbg("%s: add_timer p_slot = %p\n", __FUNCTION__,(void *) p_slot); - add_timer(&p_slot->task_event); - } else if (ctrl->event_queue[loop].event_type == INT_POWER_FAULT) { - /***********POWER FAULT********************/ - dbg("%s: power fault\n", __FUNCTION__); - /* Wait for exclusive access to hardware */ - down(&ctrl->crit_sect); - - p_slot->hpc_ops->set_attention_status(p_slot, 1); - /* Wait for the command to complete */ - wait_for_ctrl_irq (ctrl); - - p_slot->hpc_ops->green_led_off(p_slot); - /* Wait for the command to complete */ - wait_for_ctrl_irq (ctrl); - - /* Done with exclusive hardware access */ - up(&ctrl->crit_sect); - } else { - /* refresh notification */ - if (p_slot) - update_slot_info(p_slot); - } - - ctrl->event_queue[loop].event_type = 0; - - change = 1; - } - } /* End of FOR loop */ - } - - return; -} - - -int shpchp_enable_slot (struct slot *p_slot) -{ - u8 getstatus = 0; - int rc; - struct pci_func *func; - - func = shpchp_slot_find(p_slot->bus, p_slot->device, 0); - if (!func) { - dbg("%s: Error! slot NULL\n", __FUNCTION__); - return -ENODEV; - } + u8 getstatus = 0; + int rc, retval = -ENODEV; /* Check to see if (latch closed, card present, power off) */ - down(&p_slot->ctrl->crit_sect); + mutex_lock(&p_slot->ctrl->crit_sect); rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); if (rc || !getstatus) { info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number); - up(&p_slot->ctrl->crit_sect); - return -ENODEV; + goto out; } rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); if (rc || getstatus) { info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number); - up(&p_slot->ctrl->crit_sect); - return -ENODEV; + goto out; } rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); if (rc || getstatus) { info("%s: already enabled on slot(%x)\n", __FUNCTION__, p_slot->number); - up(&p_slot->ctrl->crit_sect); - return -ENODEV; + goto out; } - up(&p_slot->ctrl->crit_sect); - - slot_remove(func); - - func = shpchp_slot_create(p_slot->bus); - if (func == NULL) - return -ENOMEM; - func->bus = p_slot->bus; - func->device = p_slot->device; - func->function = 0; - func->configured = 0; - func->is_a_board = 1; + p_slot->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_power_status(p_slot, &(func->pwr_save)); - dbg("%s: func->pwr_save %x\n", __FUNCTION__, func->pwr_save); + p_slot->hpc_ops->get_adapter_status(p_slot, &(p_slot->presence_save)); + p_slot->hpc_ops->get_power_status(p_slot, &(p_slot->pwr_save)); + dbg("%s: p_slot->pwr_save %x\n", __FUNCTION__, p_slot->pwr_save); p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); - func->switch_save = !getstatus? 0x10:0; - - rc = board_added(func, p_slot->ctrl); - if (rc) { - if (is_bridge(func)) - bridge_slot_remove(func); - else - slot_remove(func); - /* Setup slot structure with entry for empty slot */ - func = shpchp_slot_create(p_slot->bus); - if (func == NULL) - return -ENOMEM; /* Out of memory */ - - func->bus = p_slot->bus; - func->device = p_slot->device; - func->function = 0; - func->configured = 0; - func->is_a_board = 1; + if(((p_slot->ctrl->pci_dev->vendor == PCI_VENDOR_ID_AMD) || + (p_slot->ctrl->pci_dev->device == PCI_DEVICE_ID_AMD_POGO_7458)) + && p_slot->ctrl->num_slots == 1) { + /* handle amd pogo errata; this must be done before enable */ + amd_pogo_errata_save_misc_reg(p_slot); + retval = board_added(p_slot); + /* handle amd pogo errata; this must be done after enable */ + amd_pogo_errata_restore_misc_reg(p_slot); + } else + retval = board_added(p_slot); - /* We have to save the presence info for these slots */ - p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save)); + if (retval) { + p_slot->hpc_ops->get_adapter_status(p_slot, + &(p_slot->presence_save)); p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); - func->switch_save = !getstatus? 0x10:0; } - if (p_slot) - update_slot_info(p_slot); - - return rc; + update_slot_info(p_slot); + out: + mutex_unlock(&p_slot->ctrl->crit_sect); + return retval; } -int shpchp_disable_slot (struct slot *p_slot) +static int shpchp_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; - struct pci_func *func; + int rc, retval = -ENODEV; if (!p_slot->ctrl) return -ENODEV; - pci_bus = p_slot->ctrl->pci_dev->subordinate; - /* Check to see if (latch closed, card present, power on) */ - down(&p_slot->ctrl->crit_sect); + mutex_lock(&p_slot->ctrl->crit_sect); - ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); - if (ret || !getstatus) { + rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus); + if (rc || !getstatus) { info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number); - up(&p_slot->ctrl->crit_sect); - return -ENODEV; + goto out; } - ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); - if (ret || getstatus) { + rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus); + if (rc || getstatus) { info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number); - up(&p_slot->ctrl->crit_sect); - return -ENODEV; + goto out; } - ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); - if (ret || !getstatus) { + rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus); + if (rc || !getstatus) { info("%s: already disabled slot(%x)\n", __FUNCTION__, p_slot->number); - up(&p_slot->ctrl->crit_sect); - return -ENODEV; - } - up(&p_slot->ctrl->crit_sect); - - func = shpchp_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 -ENODEV; - - 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 -ENODEV; - - /* 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 -ENODEV; - - /* If the VGA Enable bit is set, remove isn't supported */ - if (BCR & PCI_BRIDGE_CTL_VGA) { - rc = REMOVE_NOT_SUPPORTED; - } - } - } - - func = shpchp_slot_find(p_slot->bus, p_slot->device, index++); + goto out; } - func = shpchp_slot_find(p_slot->bus, p_slot->device, 0); - if ((func != NULL) && !rc) { - rc = remove_board(func, p_slot->ctrl); - } else if (!rc) - rc = -ENODEV; - - if (p_slot) - update_slot_info(p_slot); - - return rc; + retval = remove_board(p_slot); + update_slot_info(p_slot); + out: + mutex_unlock(&p_slot->ctrl->crit_sect); + return retval; } - -/** - * 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) +int shpchp_sysfs_enable_slot(struct slot *p_slot) { - 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; + int retval = -ENODEV; - 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; + mutex_lock(&p_slot->lock); + switch (p_slot->state) { + case BLINKINGON_STATE: + cancel_delayed_work(&p_slot->work); + case STATIC_STATE: + p_slot->state = POWERON_STATE; + mutex_unlock(&p_slot->lock); + retval = shpchp_enable_slot(p_slot); + mutex_lock(&p_slot->lock); + p_slot->state = STATIC_STATE; + break; + case POWERON_STATE: + info("Slot %s is already in powering on state\n", + p_slot->name); + break; + case BLINKINGOFF_STATE: + case POWEROFF_STATE: + info("Already enabled on slot %s\n", p_slot->name); + break; + default: + err("Not a valid state on slot %s\n", p_slot->name); + break; } + mutex_unlock(&p_slot->lock); - 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 = shpchp_slot_find(new_slot->bus, new_slot->device, index++); - - if (new_slot) - shpchp_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 = shpchp_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 configure_new_device\n"); - - return 0; + return retval; } - -/* - * Configuration logic that involves the hotplug data structures and - * their bookkeeping - */ - - -/** - * 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 shpchp_sysfs_disable_slot(struct slot *p_slot) { - int cloop; - u8 temp_byte; - u8 device; - u8 class_code; - u16 temp_word; - u32 rc; - u32 temp_register; - u32 base; - 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 pci_bus lpci_bus, *pci_bus; - struct resource_lists temp_resources; -#if defined(CONFIG_X86_64) - u8 IRQ=0; -#endif - - 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; - - if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { /* PCI-PCI Bridge */ - /* 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 = shpchprm_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(*hold_bus_node), GFP_KERNEL); - hold_IO_node = kmalloc(sizeof(*hold_IO_node), GFP_KERNEL); - hold_mem_node = kmalloc(sizeof(*hold_mem_node), GFP_KERNEL); - hold_p_mem_node = kmalloc(sizeof(*hold_p_mem_node), GFP_KERNEL); - - if (!hold_bus_node || !hold_IO_node || !hold_mem_node || !hold_p_mem_node) { - 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. - */ - 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 = (u32)(mem_node->base >> 16); - rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_BASE, temp_word); - - RES_CHECK(mem_node->base + mem_node->length - 1, 16); - temp_word = (u32)((mem_node->base + mem_node->length - 1) >> 16); - rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word); - } else { - temp_word = 0xFFFF; - rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_BASE, temp_word); - - temp_word = 0x0000; - rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word); - - kfree(hold_mem_node); - hold_mem_node = NULL; - } - - /* If we have prefetchable memory resources copy them and - * fill in the bridge's memory range registers. Otherwise, - * fill in the range registers with values that disable them. - */ - if (p_mem_node) { - memcpy(hold_p_mem_node, p_mem_node, sizeof(struct pci_resource)); - p_mem_node->next = NULL; - - /* set Pre Mem base and Limit registers */ - RES_CHECK(p_mem_node->base, 16); - temp_word = (u32)(p_mem_node->base >> 16); - rc = pci_bus_write_config_word(pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word); - - RES_CHECK(p_mem_node->base + p_mem_node->length - 1, 16); - temp_word = (u32)((p_mem_node->base + p_mem_node->length - 1) >> 16); - rc = pci_bus_write_config_word(pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word); - } else { - temp_word = 0xFFFF; - rc = pci_bus_write_config_word(pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word); - - temp_word = 0x0000; - rc = pci_bus_write_config_word(pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word); - - kfree(hold_p_mem_node); - hold_p_mem_node = NULL; - } - - /* 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 = shpchp_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) { - shpchp_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 = shpchp_set_irq(func->bus, func->device, - 0x0A + cloop, irqs.interrupt[cloop]); - if (rc) { - shpchp_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 = (u32)((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 = (u32)((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 = (u32)((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 = (u32)((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 - */ - - shpchprm_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); - } 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 */ - -#if defined(CONFIG_X86_64) - /* Figure out which interrupt pin this function uses */ - rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_INTERRUPT_PIN, &temp_byte); - - /* If this function needs an interrupt and we are behind a bridge - and the pin is tied to something that's alread mapped, - set this one the same - */ - if (temp_byte && resources->irqs && - (resources->irqs->valid_INT & - (0x01 << ((temp_byte + resources->irqs->barber_pole - 1) & 0x03)))) { - /* We have to share with something already set up */ - IRQ = resources->irqs->interrupt[(temp_byte + resources->irqs->barber_pole - 1) & 0x03]; - } else { - /* Program IRQ based on card type */ - rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code); - - if (class_code == PCI_BASE_CLASS_STORAGE) { - IRQ = shpchp_disk_irq; - } else { - IRQ = shpchp_nic_irq; - } - } - - /* IRQ Line */ - rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_INTERRUPT_LINE, IRQ); - - if (!behind_bridge) { - rc = shpchp_set_irq(func->bus, func->device, temp_byte + 0x09, IRQ); - if (rc) - return(1); - } else { - /* TBD - this code may also belong in the other clause of this If statement */ - resources->irqs->interrupt[(temp_byte + resources->irqs->barber_pole - 1) & 0x03] = IRQ; - resources->irqs->valid_INT |= 0x01 << (temp_byte + resources->irqs->barber_pole - 1) & 0x03; - } -#endif - /* Disable ROM base Address */ - temp_word = 0x00L; - rc = pci_bus_write_config_word (pci_bus, devfn, PCI_ROM_ADDRESS, temp_word); - - /* Set HP parameters (Cache Line Size, Latency Timer) */ - rc = shpchprm_set_hpp(ctrl, func, PCI_HEADER_TYPE_NORMAL); - if (rc) - return rc; + int retval = -ENODEV; - shpchprm_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); + mutex_lock(&p_slot->lock); + switch (p_slot->state) { + case BLINKINGOFF_STATE: + cancel_delayed_work(&p_slot->work); + case STATIC_STATE: + p_slot->state = POWEROFF_STATE; + mutex_unlock(&p_slot->lock); + retval = shpchp_disable_slot(p_slot); + mutex_lock(&p_slot->lock); + p_slot->state = STATIC_STATE; + break; + case POWEROFF_STATE: + info("Slot %s is already in powering off state\n", + p_slot->name); + break; + case BLINKINGON_STATE: + case POWERON_STATE: + info("Already disabled on slot %s\n", p_slot->name); + break; + default: + err("Not a valid state on slot %s\n", p_slot->name); + break; } + mutex_unlock(&p_slot->lock); - func->configured = 1; - - return 0; + return retval; } -