* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
- * Send feedback to <greg@kroah.com>, <dely.l.sy@intel.com>
+ * Send feedback to <greg@kroah.com>, <kristen.c.accardi@intel.com>
*
*/
-#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 <linux/workqueue.h>
+#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;
{
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 {
* 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))) {
* 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;
}
-
git://git.onelab.eu / linux-2.6.git / blobdiff