patch-2.4.19 linux-2.4.19/drivers/hotplug/ibmphp_core.c

Next file: linux-2.4.19/drivers/hotplug/ibmphp_ebda.c
Previous file: linux-2.4.19/drivers/hotplug/ibmphp.h
Back to the patch index
Back to the overall index

diff -urN linux-2.4.18/drivers/hotplug/ibmphp_core.c linux-2.4.19/drivers/hotplug/ibmphp_core.c
@@ -0,0 +1,1480 @@
+/*
+ * IBM Hot Plug Controller Driver
+ *
+ * Written By: Chuck Cole, Jyoti Shah, Tong Yu, Irene Zubarev, IBM Corporation
+ *
+ * Copyright (c) 2001 Greg Kroah-Hartman (greg@kroah.com)
+ * Copyright (c) 2001,2002 IBM Corp.
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Send feedback to <gregkh@us.ibm.com>
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/pci.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/wait.h>
+#include <linux/smp_lock.h>
+#include "../../arch/i386/kernel/pci-i386.h"	/* for struct irq_routing_table */
+#include "ibmphp.h"
+
+#define attn_on(sl)  ibmphp_hpc_writeslot (sl, HPC_SLOT_ATTNON)
+#define attn_off(sl) ibmphp_hpc_writeslot (sl, HPC_SLOT_ATTNOFF)
+#define attn_LED_blink(sl) ibmphp_hpc_writeslot (sl, HPC_SLOT_BLINKLED)
+#define get_ctrl_revision(sl, rev) ibmphp_hpc_readslot (sl, READ_REVLEVEL, rev)
+#define get_hpc_options(sl, opt) ibmphp_hpc_readslot (sl, READ_HPCOPTIONS, opt)
+
+#define DRIVER_VERSION	"0.1"
+#define DRIVER_DESC	"IBM Hot Plug PCI Controller Driver"
+
+int ibmphp_debug;
+
+static int debug;
+MODULE_PARM (debug, "i");
+MODULE_PARM_DESC (debug, "Debugging mode enabled or not");
+MODULE_LICENSE ("GPL");
+MODULE_DESCRIPTION (DRIVER_DESC);
+
+static int *ops[MAX_OPS + 1];
+struct pci_ops *ibmphp_pci_root_ops;
+static int max_slots;
+
+static int irqs[16];    /* PIC mode IRQ's we're using so far (in case MPS tables don't provide default info for empty slots */
+
+static int init_flag;
+
+/*
+static int get_max_adapter_speed_1 (struct hotplug_slot *, u8 *, u8);
+
+static inline int get_max_adapter_speed (struct hotplug_slot *hs, u8 *value)
+{
+	return get_max_adapter_speed_1 (hs, value, 1);
+}
+*/
+static inline int get_cur_bus_info (struct slot **sl) 
+{
+	int rc = 1;
+	struct slot * slot_cur = *sl;
+
+	debug ("options = %x\n", slot_cur->ctrl->options);
+	debug ("revision = %x\n", slot_cur->ctrl->revision);	
+
+	if (READ_BUS_STATUS (slot_cur->ctrl)) 
+		rc = ibmphp_hpc_readslot (slot_cur, READ_BUSSTATUS, NULL);
+	
+	if (rc) 
+		return rc;
+	  
+	slot_cur->bus_on->current_speed = CURRENT_BUS_SPEED (slot_cur->busstatus);
+	if (READ_BUS_MODE (slot_cur->ctrl))
+		slot_cur->bus_on->current_bus_mode = CURRENT_BUS_MODE (slot_cur->busstatus);
+
+	debug ("busstatus = %x, bus_speed = %x, bus_mode = %x\n", slot_cur->busstatus, slot_cur->bus_on->current_speed, slot_cur->bus_on->current_bus_mode);
+	
+	*sl = slot_cur;
+	return 0;
+}
+
+static inline int slot_update (struct slot **sl)
+{
+	int rc;
+ 	rc = ibmphp_hpc_readslot (*sl, READ_ALLSTAT, NULL);
+	if (rc) 
+		return rc;
+	if (!init_flag)
+		return get_cur_bus_info (sl);
+	return rc;
+}
+
+static int get_max_slots (void)
+{
+	struct list_head * tmp;
+	int slot_count = 0;
+
+	list_for_each (tmp, &ibmphp_slot_head) 
+		++slot_count;
+	return slot_count;
+}
+
+/* This routine will put the correct slot->device information per slot.  It's
+ * called from initialization of the slot structures. It will also assign
+ * interrupt numbers per each slot.
+ * Parameters: struct slot
+ * Returns 0 or errors
+ */
+int ibmphp_init_devno (struct slot **cur_slot)
+{
+	struct irq_routing_table *rtable;
+	int len;
+	int loop;
+	int i;
+
+	rtable = pcibios_get_irq_routing_table ();
+	if (!rtable) {
+		err ("no BIOS routing table...\n");
+		return -ENOMEM;
+	}
+
+	len = (rtable->size - sizeof (struct irq_routing_table)) / sizeof (struct irq_info);
+
+	if (!len)
+		return -1;
+	for (loop = 0; loop < len; loop++) {
+		if ((*cur_slot)->number == rtable->slots[loop].slot) {
+		if ((*cur_slot)->bus == rtable->slots[loop].bus) {
+			(*cur_slot)->device = PCI_SLOT (rtable->slots[loop].devfn);
+			for (i = 0; i < 4; i++)
+				(*cur_slot)->irq[i] = IO_APIC_get_PCI_irq_vector ((int) (*cur_slot)->bus, (int) (*cur_slot)->device, i);
+
+				debug ("(*cur_slot)->irq[0] = %x\n", (*cur_slot)->irq[0]);
+				debug ("(*cur_slot)->irq[1] = %x\n", (*cur_slot)->irq[1]);
+				debug ("(*cur_slot)->irq[2] = %x\n", (*cur_slot)->irq[2]);
+				debug ("(*cur_slot)->irq[3] = %x\n", (*cur_slot)->irq[3]);
+
+				debug ("rtable->exlusive_irqs = %x\n", rtable->exclusive_irqs);
+				debug ("rtable->slots[loop].irq[0].bitmap = %x\n", rtable->slots[loop].irq[0].bitmap);
+				debug ("rtable->slots[loop].irq[1].bitmap = %x\n", rtable->slots[loop].irq[1].bitmap);
+				debug ("rtable->slots[loop].irq[2].bitmap = %x\n", rtable->slots[loop].irq[2].bitmap);
+				debug ("rtable->slots[loop].irq[3].bitmap = %x\n", rtable->slots[loop].irq[3].bitmap);
+
+				debug ("rtable->slots[loop].irq[0].link= %x\n", rtable->slots[loop].irq[0].link);
+				debug ("rtable->slots[loop].irq[1].link = %x\n", rtable->slots[loop].irq[1].link);
+				debug ("rtable->slots[loop].irq[2].link = %x\n", rtable->slots[loop].irq[2].link);
+				debug ("rtable->slots[loop].irq[3].link = %x\n", rtable->slots[loop].irq[3].link);
+				debug ("end of init_devno\n");
+				return 0;
+			}
+		}
+	}
+
+	return -1;
+}
+
+static inline int power_on (struct slot *slot_cur)
+{
+	u8 cmd = HPC_SLOT_ON;
+	int retval;
+
+	retval = ibmphp_hpc_writeslot (slot_cur, cmd);
+	if (retval) {
+		err ("power on failed\n");
+		return retval;
+	}
+	if (CTLR_RESULT (slot_cur->ctrl->status)) {
+		err ("command not completed successfully in power_on \n");
+		return -EIO;
+	}
+	long_delay (3 * HZ); /* For ServeRAID cards, and some 66 PCI */
+	return 0;
+}
+
+static inline int power_off (struct slot *slot_cur)
+{
+	u8 cmd = HPC_SLOT_OFF;
+	int retval;
+
+	retval = ibmphp_hpc_writeslot (slot_cur, cmd);
+	if (retval) {
+		err ("power off failed \n");
+		return retval;
+	}
+	if (CTLR_RESULT (slot_cur->ctrl->status)) {
+		err ("command not completed successfully in power_off \n");
+		return -EIO;
+	}
+	return 0;
+}
+
+static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 value)
+{
+	int rc = 0;
+	struct slot *pslot;
+	u8 cmd;
+	int hpcrc = 0;
+
+	debug ("set_attention_status - Entry hotplug_slot[%lx] value[%x]\n", (ulong) hotplug_slot, value);
+	ibmphp_lock_operations ();
+	cmd = 0x00;     // avoid compiler warning
+
+	if (hotplug_slot) {
+		switch (value) {
+		case HPC_SLOT_ATTN_OFF:
+			cmd = HPC_SLOT_ATTNOFF;
+			break;
+		case HPC_SLOT_ATTN_ON:
+			cmd = HPC_SLOT_ATTNON;
+			break;
+		case HPC_SLOT_ATTN_BLINK:
+			cmd = HPC_SLOT_BLINKLED;
+			break;
+		default:
+			rc = -ENODEV;
+			err ("set_attention_status - Error : invalid input [%x]\n", value);
+			break;
+		}
+		if (rc == 0) {
+			pslot = (struct slot *) hotplug_slot->private;
+			if (pslot)
+				hpcrc = ibmphp_hpc_writeslot (pslot, cmd);
+			else
+				rc = -ENODEV;
+		}
+	} else	
+		rc = -ENODEV;
+
+	if (hpcrc)
+		rc = hpcrc;
+
+	ibmphp_unlock_operations ();
+
+	debug ("set_attention_status - Exit rc[%d]\n", rc);
+	return rc;
+}
+
+static int get_attention_status (struct hotplug_slot *hotplug_slot, u8 * value)
+{
+	int rc = -ENODEV;
+	struct slot *pslot;
+	int hpcrc = 0;
+	struct slot myslot;
+
+	debug ("get_attention_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", (ulong) hotplug_slot, (ulong) value);
+        
+	ibmphp_lock_operations ();
+	if (hotplug_slot && value) {
+		pslot = (struct slot *) hotplug_slot->private;
+		if (pslot) {
+			memcpy ((void *) &myslot, (void *) pslot, sizeof (struct slot));
+			hpcrc = ibmphp_hpc_readslot (pslot, READ_SLOTSTATUS, &(myslot.status));
+			if (!hpcrc)
+				hpcrc = ibmphp_hpc_readslot (pslot, READ_EXTSLOTSTATUS, &(myslot.ext_status));
+			if (!hpcrc) {
+				*value = SLOT_ATTN (myslot.status, myslot.ext_status);
+				rc = 0;
+			}
+		}
+	} else
+		rc = -ENODEV;
+
+	if (hpcrc)
+		rc = hpcrc;
+
+	ibmphp_unlock_operations ();
+	debug ("get_attention_status - Exit rc[%d] hpcrc[%x] value[%x]\n", rc, hpcrc, *value);
+	return rc;
+}
+
+static int get_latch_status (struct hotplug_slot *hotplug_slot, u8 * value)
+{
+	int rc = -ENODEV;
+	struct slot *pslot;
+	int hpcrc = 0;
+	struct slot myslot;
+
+	debug ("get_latch_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", (ulong) hotplug_slot, (ulong) value);
+	ibmphp_lock_operations ();
+	if (hotplug_slot && value) {
+		pslot = (struct slot *) hotplug_slot->private;
+		if (pslot) {
+			memcpy ((void *) &myslot, (void *) pslot, sizeof (struct slot));
+			hpcrc = ibmphp_hpc_readslot (pslot, READ_SLOTSTATUS, &(myslot.status));
+			if (!hpcrc) {
+				*value = SLOT_LATCH (myslot.status);
+				rc = 0;
+			}
+		}
+	} else
+		rc = -ENODEV;
+
+	if (hpcrc)
+		rc = hpcrc;
+
+	ibmphp_unlock_operations ();
+	debug ("get_latch_status - Exit rc[%d] hpcrc[%x] value[%x]\n", rc, hpcrc, *value);
+	return rc;
+}
+
+
+static int get_power_status (struct hotplug_slot *hotplug_slot, u8 * value)
+{
+	int rc = -ENODEV;
+	struct slot *pslot;
+	int hpcrc = 0;
+	struct slot myslot;
+
+	debug ("get_power_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", (ulong) hotplug_slot, (ulong) value);
+	ibmphp_lock_operations ();
+	if (hotplug_slot && value) {
+		pslot = (struct slot *) hotplug_slot->private;
+		if (pslot) {
+			memcpy ((void *) &myslot, (void *) pslot, sizeof (struct slot));
+			hpcrc = ibmphp_hpc_readslot (pslot, READ_SLOTSTATUS, &(myslot.status));
+			if (!hpcrc) {
+				*value = SLOT_POWER (myslot.status);
+				rc = 0;
+			}
+		}
+	} else
+		rc = -ENODEV;
+
+	if (hpcrc)
+		rc = hpcrc;
+
+	ibmphp_unlock_operations ();
+	debug ("get_power_status - Exit rc[%d] hpcrc[%x] value[%x]\n", rc, hpcrc, *value);
+	return rc;
+}
+
+static int get_adapter_present (struct hotplug_slot *hotplug_slot, u8 * value)
+{
+	int rc = -ENODEV;
+	struct slot *pslot;
+	u8 present;
+	int hpcrc = 0;
+	struct slot myslot;
+
+	debug ("get_adapter_status - Entry hotplug_slot[%lx] pvalue[%lx]\n", (ulong) hotplug_slot, (ulong) value);
+	ibmphp_lock_operations ();
+	if (hotplug_slot && value) {
+		pslot = (struct slot *) hotplug_slot->private;
+		if (pslot) {
+			memcpy ((void *) &myslot, (void *) pslot, sizeof (struct slot));
+			hpcrc = ibmphp_hpc_readslot (pslot, READ_SLOTSTATUS, &(myslot.status));
+			if (!hpcrc) {
+				present = SLOT_PRESENT (myslot.status);
+				if (present == HPC_SLOT_EMPTY)
+					*value = 0;
+				else
+					*value = 1;
+				rc = 0;
+			}
+		}
+	} else
+		rc = -ENODEV;
+	if (hpcrc)
+		rc = hpcrc;
+
+	ibmphp_unlock_operations ();
+	debug ("get_adapter_present - Exit rc[%d] hpcrc[%x] value[%x]\n", rc, hpcrc, *value);
+	return rc;
+}
+/*
+static int get_max_bus_speed (struct hotplug_slot *hotplug_slot, u8 * value)
+{
+	int rc = -ENODEV;
+	struct slot *pslot;
+	u8 mode = 0;
+
+	debug ("get_max_bus_speed - Entry hotplug_slot[%lx] pvalue[%lx]\n", (ulong)hotplug_slot, (ulong) value);
+
+	ibmphp_lock_operations ();
+
+	if (hotplug_slot && value) {
+		pslot = (struct slot *) hotplug_slot->private;
+		if (pslot) {
+			rc = 0;
+			mode = pslot->bus_on->supported_bus_mode;
+			*value = pslot->bus_on->supported_speed;
+			*value &= 0x0f;
+
+			if (mode == BUS_MODE_PCIX)
+				*value |= 0x80;
+			else if (mode == BUS_MODE_PCI)
+				*value |= 0x40;
+			else
+				*value |= 0x20;
+		}
+	} else
+		rc = -ENODEV;
+
+	ibmphp_unlock_operations ();
+	debug ("get_max_bus_speed - Exit rc[%d] value[%x]\n", rc, *value);
+	return rc;
+}
+
+static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, u8 * value)
+{
+	int rc = -ENODEV;
+	struct slot *pslot;
+	u8 mode = 0;
+
+	debug ("get_cur_bus_speed - Entry hotplug_slot[%lx] pvalue[%lx]\n", (ulong)hotplug_slot, (ulong) value);
+
+	ibmphp_lock_operations ();
+
+	if (hotplug_slot && value) {
+		pslot = (struct slot *) hotplug_slot->private;
+		if (pslot) {
+			rc = get_cur_bus_info (&pslot);
+			if (!rc) {
+				mode = pslot->bus_on->current_bus_mode;
+				*value = pslot->bus_on->current_speed;
+				*value &= 0x0f;
+				
+				if (mode == BUS_MODE_PCIX)
+					*value |= 0x80;
+				else if (mode == BUS_MODE_PCI)
+					*value |= 0x40;
+				else
+					*value |= 0x20;	
+			}
+		}
+	} else
+		rc = -ENODEV;
+
+	ibmphp_unlock_operations ();
+	debug ("get_cur_bus_speed - Exit rc[%d] value[%x]\n", rc, *value);
+	return rc;
+}
+
+static int get_max_adapter_speed_1 (struct hotplug_slot *hotplug_slot, u8 * value, u8 flag)
+{
+	int rc = -ENODEV;
+	struct slot *pslot;
+	int hpcrc = 0;
+	struct slot myslot;
+
+	debug ("get_max_adapter_speed - Entry hotplug_slot[%lx] pvalue[%lx]\n", (ulong)hotplug_slot, (ulong) value);
+
+	if (flag)
+		ibmphp_lock_operations ();
+
+	if (hotplug_slot && value) {
+		pslot = (struct slot *) hotplug_slot->private;
+		if (pslot) {
+			memcpy ((void *) &myslot, (void *) pslot, sizeof (struct slot));
+			hpcrc = ibmphp_hpc_readslot (pslot, READ_SLOTSTATUS, &(myslot.status));
+
+			if (!(SLOT_LATCH (myslot.status)) && (SLOT_PRESENT (myslot.status))) {
+				hpcrc = ibmphp_hpc_readslot (pslot, READ_EXTSLOTSTATUS, &(myslot.ext_status));
+				if (!hpcrc) {
+					*value = SLOT_SPEED (myslot.ext_status);
+					rc = 0;
+				}
+			} else {
+				*value = MAX_ADAPTER_NONE;
+				rc = 0;
+			}
+                }
+        } else
+		rc = -ENODEV;
+
+	if (hpcrc)
+		rc = hpcrc;
+
+	if (flag)
+		ibmphp_unlock_operations ();
+
+	debug ("get_adapter_present - Exit rc[%d] hpcrc[%x] value[%x]\n", rc, hpcrc, *value);
+	return rc;
+}
+
+static int get_card_bus_names (struct hotplug_slot *hotplug_slot, char * value)
+{
+	int rc = -ENODEV;
+	struct slot *pslot = NULL;
+	struct pci_dev * dev = NULL;
+
+	debug ("get_card_bus_names - Entry hotplug_slot[%lx] \n", (ulong)hotplug_slot);
+
+	ibmphp_lock_operations ();
+
+	if (hotplug_slot) {
+		pslot = (struct slot *) hotplug_slot->private;
+		if (pslot) {
+			rc = 0;
+			if (pslot->func)
+				dev = pslot->func->dev;
+			else
+                		dev = pci_find_slot (pslot->bus, (pslot->device << 3) | (0x00 & 0x7));
+			if (dev) 
+				snprintf (value, 100, "Bus %d : %s", pslot->bus,dev->name);
+			else
+				snprintf (value, 100, "Bus %d", pslot->bus);
+			
+				
+		}
+	} else
+		rc = -ENODEV;
+
+	ibmphp_unlock_operations ();
+	debug ("get_card_bus_names - Exit rc[%d] value[%x]\n", rc, *value);
+	return rc;
+}
+
+*/
+/*******************************************************************************
+ * This routine will initialize the ops data structure used in the validate
+ * function. It will also power off empty slots that are powered on since BIOS
+ * leaves those on, albeit disconnected
+ ******************************************************************************/
+static int init_ops (void)
+{
+	struct slot *slot_cur;
+	int retval;
+	int j;
+	int rc;
+
+	for (j = 0; j < MAX_OPS; j++) {
+		ops[j] = (int *) kmalloc ((max_slots + 1) * sizeof (int), GFP_KERNEL);
+		if (!ops[j]) {
+			err ("out of system memory \n");
+			return -ENOMEM;
+		}
+	}
+
+	ops[ADD][0] = 0;
+	ops[REMOVE][0] = 0;
+	ops[DETAIL][0] = 0;
+
+	for (j = 1; j <= max_slots; j++) {
+
+		slot_cur = ibmphp_get_slot_from_physical_num (j);
+
+		debug ("BEFORE GETTING SLOT STATUS, slot # %x\n", slot_cur->number);
+
+		if (slot_cur->ctrl->revision == 0xFF) 
+			if (get_ctrl_revision (slot_cur, &slot_cur->ctrl->revision))
+				return -1;
+
+		if (slot_cur->bus_on->current_speed == 0xFF) 
+			if (get_cur_bus_info (&slot_cur)) 
+				return -1;
+
+		if (slot_cur->ctrl->options == 0xFF)
+			if (get_hpc_options (slot_cur, &slot_cur->ctrl->options))
+				return -1;
+
+		retval = slot_update (&slot_cur);
+		if (retval)
+			return retval;
+
+		debug ("status = %x, ext_status = %x\n", slot_cur->status, slot_cur->ext_status);
+		debug ("SLOT_POWER = %x, SLOT_PRESENT = %x, SLOT_LATCH = %x\n", SLOT_POWER (slot_cur->status), SLOT_PRESENT (slot_cur->status), SLOT_LATCH (slot_cur->status));
+
+		if (!(SLOT_POWER (slot_cur->status)) && (SLOT_PRESENT (slot_cur->status)) && !(SLOT_LATCH (slot_cur->status)))
+			/* No power, adapter, and latch closed */
+			ops[ADD][j] = 1;
+		else
+			ops[ADD][j] = 0;
+
+		ops[DETAIL][j] = 1;
+
+		if ((SLOT_POWER (slot_cur->status)) && (SLOT_PRESENT (slot_cur->status)) && !(SLOT_LATCH (slot_cur->status)))
+			/*Power,adapter,latch closed */
+			ops[REMOVE][j] = 1;
+		else
+			ops[REMOVE][j] = 0;
+
+		if ((SLOT_POWER (slot_cur->status)) && !(SLOT_PRESENT (slot_cur->status)) && !(SLOT_LATCH (slot_cur->status))) {
+			debug ("BEFORE POWER OFF COMMAND\n");
+				rc = power_off (slot_cur);
+				if (rc)
+					return rc;
+
+	/*		retval = slot_update (&slot_cur);
+	 *		if (retval)
+	 *			return retval;
+	 *		ibmphp_update_slot_info (slot_cur);
+	 */
+		}
+	}
+	init_flag = 0;
+	return 0;
+}
+
+/* This operation will check whether the slot is within the bounds and
+ * the operation is valid to perform on that slot
+ * Parameters: slot, operation
+ * Returns: 0 or error codes
+ */
+static int validate (struct slot *slot_cur, int opn)
+{
+	int number;
+	int retval;
+
+	if (!slot_cur)
+		return -ENODEV;
+	number = slot_cur->number;
+	if ((number > max_slots) || (number < 0))
+		return -EBADSLT;
+	debug ("slot_number in validate is %d\n", slot_cur->number);
+
+	retval = slot_update (&slot_cur);
+	if (retval)
+		return retval;
+
+	if (!(SLOT_POWER (slot_cur->status)) && (SLOT_PRESENT (slot_cur->status))
+	    && !(SLOT_LATCH (slot_cur->status)))
+		ops[ADD][number] = 1;
+	else
+		ops[ADD][number] = 0;
+
+	ops[DETAIL][number] = 1;
+
+	if ((SLOT_POWER (slot_cur->status)) && (SLOT_PRESENT (slot_cur->status))
+	    && !(SLOT_LATCH (slot_cur->status)))
+		ops[REMOVE][number] = 1;
+	else
+		ops[REMOVE][number] = 0;
+
+	switch (opn) {
+		case ENABLE:
+			if (ops[ADD][number])
+				return 0;
+			break;
+		case DISABLE:
+			if (ops[REMOVE][number])
+				return 0;
+			break;
+		case DETAIL:
+			if (ops[DETAIL][number])
+				return 0;
+			break;
+		default:
+			return -EINVAL;
+			break;
+	}
+	err ("validate failed....\n");
+	return -EINVAL;
+}
+
+/********************************************************************************
+ * This routine is for updating the data structures in the hotplug core
+ * Parameters: struct slot
+ * Returns: 0 or error
+ *******************************************************************************/
+int ibmphp_update_slot_info (struct slot *slot_cur)
+{
+	struct hotplug_slot_info *info;
+	char buffer[10];
+	int rc;
+//	u8 bus_speed;
+
+	info = kmalloc (sizeof (struct hotplug_slot_info), GFP_KERNEL);
+	if (!info) {
+		err ("out of system memory \n");
+		return -ENOMEM;
+	}
+        
+	snprintf (buffer, 10, "%d", slot_cur->number);
+	info->power_status = SLOT_POWER (slot_cur->status);
+	info->attention_status = SLOT_ATTN (slot_cur->status, slot_cur->ext_status);
+	info->latch_status = SLOT_LATCH (slot_cur->status);
+        if (!SLOT_PRESENT (slot_cur->status)) {
+                info->adapter_status = 0;
+//		info->max_adapter_speed_status = MAX_ADAPTER_NONE;
+	} else {
+                info->adapter_status = 1;
+//		get_max_adapter_speed_1 (slot_cur->hotplug_slot, &info->max_adapter_speed_status, 0);
+	}
+/*
+	bus_speed = slot_cur->bus_on->current_speed;
+	bus_speed &= 0x0f;
+                        
+	if (slot_cur->bus_on->current_bus_mode == BUS_MODE_PCIX)
+		bus_speed |= 0x80;
+	else if (slot_cur->bus_on->current_bus_mode == BUS_MODE_PCI)
+		bus_speed |= 0x40;
+	else
+		bus_speed |= 0x20;
+
+	info->cur_bus_speed_status = bus_speed;
+	info->max_bus_speed_status = slot_cur->hotplug_slot->info->max_bus_speed_status;
+	// To do: card_bus_names 
+*/	
+	rc = pci_hp_change_slot_info (buffer, info);
+	kfree (info);
+	return rc;
+}
+
+
+/******************************************************************************
+ * This function will return the pci_func, given bus and devfunc, or NULL.  It
+ * is called from visit routines
+ ******************************************************************************/
+
+static struct pci_func *ibm_slot_find (u8 busno, u8 device, u8 function)
+{
+	struct pci_func *func_cur;
+	struct slot *slot_cur;
+	struct list_head * tmp;
+	list_for_each (tmp, &ibmphp_slot_head) {
+		slot_cur = list_entry (tmp, struct slot, ibm_slot_list);
+		if (slot_cur->func) {
+			func_cur = slot_cur->func;
+			while (func_cur) {
+				if ((func_cur->busno == busno) && (func_cur->device == device) && (func_cur->function == function))
+					return func_cur;
+				func_cur = func_cur->next;
+			}
+		}
+	}
+	return NULL;
+}
+
+/* This routine is to find the pci_bus from kernel structures.
+ * Parameters: bus number
+ * Returns : pci_bus *  or NULL if not found
+ */
+static struct pci_bus *find_bus (u8 busno)
+{
+	const struct list_head *tmp;
+	struct pci_bus *bus;
+	debug ("inside find_bus, busno = %x \n", busno);
+
+	list_for_each (tmp, &pci_root_buses) {
+		bus = (struct pci_bus *) pci_bus_b (tmp);
+		if (bus)
+			if (bus->number == busno)
+				return bus;
+	}
+	return NULL;
+}
+
+/******************************************************************
+ * This function is here because we can no longer use pci_root_ops
+ ******************************************************************/
+static struct pci_ops *get_root_pci_ops (void)
+{
+	struct pci_bus * bus;
+
+	if ((bus = find_bus (0)))
+		return bus->ops;
+	return NULL;
+}
+
+/*************************************************************
+ * This routine frees up memory used by struct slot, including
+ * the pointers to pci_func, bus, hotplug_slot, controller,
+ * and deregistering from the hotplug core
+ *************************************************************/
+static void free_slots (void)
+{
+	struct slot *slot_cur;
+	struct list_head * tmp;
+	struct list_head * next;
+
+	list_for_each_safe (tmp, next, &ibmphp_slot_head) {
+
+		slot_cur = list_entry (tmp, struct slot, ibm_slot_list);
+
+		pci_hp_deregister (slot_cur->hotplug_slot);
+
+		if (slot_cur->hotplug_slot) {
+			kfree (slot_cur->hotplug_slot);
+			slot_cur->hotplug_slot = NULL;
+		}
+
+		if (slot_cur->ctrl) 
+			slot_cur->ctrl = NULL;
+		
+		if (slot_cur->bus_on) 
+			slot_cur->bus_on = NULL;
+
+		ibmphp_unconfigure_card (&slot_cur, -1);  /* we don't want to actually remove the resources, since free_resources will do just that */
+
+		kfree (slot_cur);
+	}
+}
+
+static int ibm_is_pci_dev_in_use (struct pci_dev *dev)
+{
+	int i = 0;
+	int inuse = 0;
+
+	if (dev->driver)
+		return 1;
+
+	for (i = 0; !dev->driver && !inuse && (i < 6); i++) {
+
+		if (!pci_resource_start (dev, i))
+			continue;
+
+		if (pci_resource_flags (dev, i) & IORESOURCE_IO)
+			inuse = check_region (pci_resource_start (dev, i), pci_resource_len (dev, i));
+
+		else if (pci_resource_flags (dev, i) & IORESOURCE_MEM)
+			inuse = check_mem_region (pci_resource_start (dev, i), pci_resource_len (dev, i));
+	}
+
+	return inuse;
+}
+
+static int ibm_pci_hp_remove_device (struct pci_dev *dev)
+{
+	if (ibm_is_pci_dev_in_use (dev)) {
+		err ("***Cannot safely power down device -- it appears to be in use***\n");
+		return -EBUSY;
+	}
+	pci_remove_device (dev);
+	return 0;
+}
+
+static int ibm_unconfigure_visit_pci_dev_phase2 (struct pci_dev_wrapped *wrapped_dev, struct pci_bus_wrapped *wrapped_bus)
+{
+	struct pci_dev *dev = wrapped_dev->dev;
+	struct pci_func *temp_func;
+	int i = 0;
+
+	do {
+		temp_func = ibm_slot_find (dev->bus->number, dev->devfn >> 3, i++);
+	} while (temp_func && (temp_func->function != (dev->devfn & 0x07)));
+
+	if (dev) {
+		if (ibm_pci_hp_remove_device (dev) == 0)
+			kfree (dev);    /* Now, remove */
+		else
+			return -1;
+	}
+
+	if (temp_func)
+		temp_func->dev = NULL;
+	else
+		err ("No pci_func representation for bus, devfn = %d, %x\n", dev->bus->number, dev->devfn);
+
+	return 0;
+}
+
+static int ibm_unconfigure_visit_pci_bus_phase2 (struct pci_bus_wrapped *wrapped_bus, struct pci_dev_wrapped *wrapped_dev)
+{
+	struct pci_bus *bus = wrapped_bus->bus;
+
+	pci_proc_detach_bus (bus);
+	/* The cleanup code should live in the kernel... */
+	bus->self->subordinate = NULL;
+	/* unlink from parent bus */
+	list_del (&bus->node);
+
+	/* Now, remove */
+	if (bus)
+		kfree (bus);
+
+	return 0;
+}
+
+static int ibm_unconfigure_visit_pci_dev_phase1 (struct pci_dev_wrapped *wrapped_dev, struct pci_bus_wrapped *wrapped_bus)
+{
+	struct pci_dev *dev = wrapped_dev->dev;
+
+	debug ("attempting removal of driver for device (%x, %x, %x)\n", dev->bus->number, PCI_SLOT (dev->devfn), PCI_FUNC (dev->devfn));
+
+	/* Now, remove the Linux Driver Representation */
+	if (dev->driver) {
+		debug ("is there a driver?\n");
+		if (dev->driver->remove) {
+			dev->driver->remove (dev);
+			debug ("driver was properly removed\n");
+		}
+		dev->driver = NULL;
+	}
+
+	return ibm_is_pci_dev_in_use (dev);
+}
+
+static struct pci_visit ibm_unconfigure_functions_phase1 = {
+	post_visit_pci_dev:	ibm_unconfigure_visit_pci_dev_phase1,
+};
+
+static struct pci_visit ibm_unconfigure_functions_phase2 = {
+	post_visit_pci_bus:	ibm_unconfigure_visit_pci_bus_phase2,
+	post_visit_pci_dev:	ibm_unconfigure_visit_pci_dev_phase2,
+};
+
+static int ibm_unconfigure_device (struct pci_func *func)
+{
+	int rc = 0;
+	struct pci_dev_wrapped wrapped_dev;
+	struct pci_bus_wrapped wrapped_bus;
+	struct pci_dev *temp;
+	u8 j;
+
+	memset (&wrapped_dev, 0, sizeof (struct pci_dev_wrapped));
+	memset (&wrapped_bus, 0, sizeof (struct pci_bus_wrapped));
+
+	debug ("inside ibm_unconfigure_device\n");
+	debug ("func->device = %x, func->function = %x\n", func->device, func->function);
+	debug ("func->device << 3 | 0x0  = %x\n", func->device << 3 | 0x0);
+
+	for (j = 0; j < 0x08; j++) {
+		temp = pci_find_slot (func->busno, (func->device << 3) | j);
+		if (temp) {
+			wrapped_dev.dev = temp;
+			wrapped_bus.bus = temp->bus;
+			rc = pci_visit_dev (&ibm_unconfigure_functions_phase1, &wrapped_dev, &wrapped_bus);
+			if (rc)
+				break;
+
+			rc = pci_visit_dev (&ibm_unconfigure_functions_phase2, &wrapped_dev, &wrapped_bus);
+			if (rc)
+				break;
+		}
+	}
+	debug ("rc in ibm_unconfigure_device b4 returning is %d \n", rc);
+	return rc;
+}
+
+static int configure_visit_pci_dev (struct pci_dev_wrapped *wrapped_dev, struct pci_bus_wrapped *wrapped_bus)
+{
+	//      struct pci_bus *bus = wrapped_bus->bus; /* We don't need this, since we don't create in the else statement */
+	struct pci_dev *dev = wrapped_dev->dev;
+	struct pci_func *temp_func;
+	int i = 0;
+
+	do {
+		temp_func = ibm_slot_find (dev->bus->number, dev->devfn >> 3, i++);
+	} while (temp_func && (temp_func->function != (dev->devfn & 0x07)));
+
+	if (temp_func)
+		temp_func->dev = dev;
+	else {
+		/* This should not really happen, since we create functions
+		   first and then call to configure */
+		debug (" We shouldn't come here \n");
+	}
+
+	if (temp_func->dev) {
+		pci_proc_attach_device (temp_func->dev);
+		pci_announce_device_to_drivers (temp_func->dev);
+	}
+
+	return 0;
+}
+
+static struct pci_visit configure_functions = {
+	visit_pci_dev:	configure_visit_pci_dev,
+};
+
+static int ibm_configure_device (struct pci_func *func)
+{
+	unsigned char bus;
+	struct pci_dev dev0;
+	struct pci_bus *child;
+	struct pci_dev *temp;
+	int rc = 0;
+
+	struct pci_dev_wrapped wrapped_dev;
+	struct pci_bus_wrapped wrapped_bus;
+
+	memset (&wrapped_dev, 0, sizeof (struct pci_dev_wrapped));
+	memset (&wrapped_bus, 0, sizeof (struct pci_bus_wrapped));
+	memset (&dev0, 0, sizeof (struct pci_dev));
+
+	if (func->dev == NULL)
+		func->dev = pci_find_slot (func->busno, (func->device << 3) | (func->function & 0x7));
+
+	if (func->dev == NULL) {
+		dev0.bus = find_bus (func->busno);
+		dev0.devfn = ((func->device << 3) + (func->function & 0x7));
+		dev0.sysdata = dev0.bus->sysdata;
+
+		func->dev = pci_scan_slot (&dev0);
+
+		if (func->dev == NULL) {
+			err ("ERROR... : pci_dev still NULL \n");
+			return 0;
+		}
+	}
+	if (func->dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
+		pci_read_config_byte (func->dev, PCI_SECONDARY_BUS, &bus);
+		child = (struct pci_bus *) pci_add_new_bus (func->dev->bus, (func->dev), bus);
+		pci_do_scan_bus (child);
+	}
+
+	temp = func->dev;
+	if (temp) {
+		wrapped_dev.dev = temp;
+		wrapped_bus.bus = temp->bus;
+		rc = pci_visit_dev (&configure_functions, &wrapped_dev, &wrapped_bus);
+	}
+	return rc;
+}
+/*******************************************************
+ * Returns whether the bus is empty or not 
+ *******************************************************/
+static int is_bus_empty (struct slot * slot_cur)
+{
+	int rc;
+	struct slot * tmp_slot;
+	u8 i = slot_cur->bus_on->slot_min;
+
+	while (i <= slot_cur->bus_on->slot_max) {
+		if (i == slot_cur->number) {
+			i++;
+			continue;
+		}
+		tmp_slot = ibmphp_get_slot_from_physical_num (i);
+		rc = slot_update (&tmp_slot);
+		if (rc)
+			return 0;
+		if (SLOT_PRESENT (tmp_slot->status) && SLOT_POWER (tmp_slot->status))
+			return 0;
+		i++;
+	}
+	return 1;
+}
+
+/***********************************************************
+ * If the HPC permits and the bus currently empty, tries to set the 
+ * bus speed and mode at the maximum card capability
+ ***********************************************************/
+static int set_bus (struct slot * slot_cur)
+{
+	int rc;
+	u8 speed;
+	u8 cmd = 0x0;
+
+	debug ("%s - entry slot # %d \n", __FUNCTION__, slot_cur->number);
+	if (SET_BUS_STATUS (slot_cur->ctrl) && is_bus_empty (slot_cur)) {
+		rc = slot_update (&slot_cur);
+		if (rc)
+			return rc;
+		speed = SLOT_SPEED (slot_cur->ext_status);
+		debug ("ext_status = %x, speed = %x\n", slot_cur->ext_status, speed);
+		switch (speed) {
+		case HPC_SLOT_SPEED_33:
+			cmd = HPC_BUS_33CONVMODE;
+			break;
+		case HPC_SLOT_SPEED_66:
+			if (SLOT_PCIX (slot_cur->ext_status))
+				cmd = HPC_BUS_66PCIXMODE;
+			else
+				cmd = HPC_BUS_66CONVMODE;
+			break;
+		case HPC_SLOT_SPEED_133:
+			if (slot_cur->bus_on->slot_count > 1)
+				cmd = HPC_BUS_100PCIXMODE;
+			else
+				cmd = HPC_BUS_133PCIXMODE;
+			break;
+		default:
+			err ("wrong slot speed \n");
+			return -ENODEV;
+		}
+		debug ("setting bus speed for slot %d, cmd %x\n", slot_cur->number, cmd);
+		rc = ibmphp_hpc_writeslot (slot_cur, cmd);
+		if (rc)
+			return rc;
+	}
+	debug ("%s -Exit \n", __FUNCTION__);
+	return 0;
+}
+
+static inline void print_card_capability (struct slot *slot_cur)
+{
+	info ("capability of the card is ");
+	if ((slot_cur->ext_status & CARD_INFO) == PCIX133) 
+		info ("   133 MHz PCI-X \n");
+	else if ((slot_cur->ext_status & CARD_INFO) == PCIX66)
+		info ("    66 MHz PCI-X \n");
+	else if ((slot_cur->ext_status & CARD_INFO) == PCI66)
+		info ("    66 MHz PCI \n");
+	else
+		info ("    33 MHz PCI \n");
+
+}
+
+/* This routine will power on the slot, configure the device(s) and find the
+ * drivers for them.
+ * Parameters: hotplug_slot
+ * Returns: 0 or failure codes
+ */
+static int enable_slot (struct hotplug_slot *hs)
+{
+	int rc, i, rcpr;
+	struct slot *slot_cur;
+	u8 function;
+	u8 faulted = 0;
+	struct pci_func *tmp_func;
+
+	ibmphp_lock_operations ();
+
+	debug ("ENABLING SLOT........ \n");
+	slot_cur = (struct slot *) hs->private;
+
+	if ((rc = validate (slot_cur, ENABLE))) {
+		err ("validate function failed \n");
+		attn_off (slot_cur);	/* need to turn off if was blinking b4 */
+		attn_on (slot_cur);
+		rc = slot_update (&slot_cur);
+		if (rc) {
+			ibmphp_unlock_operations();
+			return rc;
+		}
+		ibmphp_update_slot_info (slot_cur);
+                ibmphp_unlock_operations ();
+		return rc;
+	}
+
+	attn_LED_blink (slot_cur);
+	
+	rc = set_bus (slot_cur);
+	if (rc) {
+		err ("was not able to set the bus \n");
+		attn_off (slot_cur);
+		attn_on (slot_cur);
+		ibmphp_unlock_operations ();
+		return -ENODEV;
+	}
+		
+	rc = power_on (slot_cur);
+
+	if (rc) {
+		err ("something wrong when powering up... please see below for details\n");
+		/* need to turn off before on, otherwise, blinking overwrites */
+		attn_off(slot_cur);
+		attn_on (slot_cur);
+		if (slot_update (&slot_cur)) {
+			attn_off (slot_cur);
+			attn_on (slot_cur);
+			ibmphp_unlock_operations ();
+			return -ENODEV;
+		}
+		/* Check to see the error of why it failed */
+		if (!(SLOT_PWRGD (slot_cur->status)))
+			err ("power fault occured trying to power up \n");
+		else if (SLOT_BUS_SPEED (slot_cur->status)) {
+			err ("bus speed mismatch occured.  please check current bus speed and card capability \n");
+			print_card_capability (slot_cur);
+		} else if (SLOT_BUS_MODE (slot_cur->ext_status)) 
+			err ("bus mode mismatch occured.  please check current bus mode and card capability \n");
+
+		ibmphp_update_slot_info (slot_cur);
+		ibmphp_unlock_operations (); 
+		return rc;
+	}
+	debug ("after power_on\n");
+
+	rc = slot_update (&slot_cur);
+	if (rc) {
+		attn_off (slot_cur);
+		attn_on (slot_cur);
+		rcpr = power_off (slot_cur);
+		if (rcpr) {
+			ibmphp_unlock_operations ();
+			return rcpr;
+		}
+		ibmphp_unlock_operations ();
+		return rc;
+	}
+	
+	if (SLOT_POWER (slot_cur->status) && !(SLOT_PWRGD (slot_cur->status))) {
+		faulted = 1;
+		err ("power fault occured trying to power up...\n");
+	} else if (SLOT_POWER (slot_cur->status) && (SLOT_BUS_SPEED (slot_cur->status))) {
+		faulted = 1;
+		err ("bus speed mismatch occured.  please check current bus speed and card capability \n");
+		print_card_capability (slot_cur);
+	} 
+	/* Don't think this case will happen after above checks... but just in case, for paranoia sake */
+	else if (!(SLOT_POWER (slot_cur->status))) {
+		err ("power on failed... \n");
+		faulted = 1;
+	}
+	if (faulted) {
+		attn_off (slot_cur);	/* need to turn off b4 on */
+		attn_on (slot_cur);
+		rcpr = power_off (slot_cur);
+		if (rcpr) {
+			ibmphp_unlock_operations ();
+			return rcpr;
+		}
+			
+		if (slot_update (&slot_cur)) {
+			ibmphp_unlock_operations ();
+			return -ENODEV;
+		}
+		ibmphp_update_slot_info (slot_cur);
+		ibmphp_unlock_operations ();
+		return -EINVAL;
+	}
+
+	slot_cur->func = (struct pci_func *) kmalloc (sizeof (struct pci_func), GFP_KERNEL);
+	if (!slot_cur->func) { /* We cannot do update_slot_info here, since no memory for kmalloc n.e.ways, and update_slot_info allocates some */
+		err ("out of system memory \n");
+		attn_off (slot_cur);
+		attn_on (slot_cur);
+		rcpr = power_off (slot_cur);
+		if (rcpr) {
+			ibmphp_unlock_operations ();
+			return rcpr;
+		}
+		ibmphp_unlock_operations ();
+		return -ENOMEM;
+	}
+	memset (slot_cur->func, 0, sizeof (struct pci_func));
+	slot_cur->func->busno = slot_cur->bus;
+	slot_cur->func->device = slot_cur->device;
+	for (i = 0; i < 4; i++)
+		slot_cur->func->irq[i] = slot_cur->irq[i];
+
+	debug ("b4 configure_card, slot_cur->bus = %x, slot_cur->device = %x\n", slot_cur->bus, slot_cur->device);
+
+	if (ibmphp_configure_card (slot_cur->func, slot_cur->number)) {
+		err ("configure_card was unsuccessful... \n");
+		ibmphp_unconfigure_card (&slot_cur, 1); /* true because don't need to actually deallocate resources, just remove references */
+		debug ("after unconfigure_card\n");
+		slot_cur->func = NULL;
+		attn_off (slot_cur);	/* need to turn off in case was blinking */
+		attn_on (slot_cur);
+		rcpr = power_off (slot_cur);
+		if (rcpr) {
+			ibmphp_unlock_operations ();
+			return rcpr;
+		}
+		if (slot_update (&slot_cur)) {
+			ibmphp_unlock_operations();
+			return -ENODEV;
+		}
+		ibmphp_update_slot_info (slot_cur);
+		ibmphp_unlock_operations ();
+		return -ENOMEM;
+	}
+	function = 0x00;
+	do {
+		tmp_func = ibm_slot_find (slot_cur->bus, slot_cur->func->device, function++);
+		if (tmp_func && !(tmp_func->dev))
+			ibm_configure_device (tmp_func);
+	} while (tmp_func);
+
+	attn_off (slot_cur);
+	if (slot_update (&slot_cur)) {
+		ibmphp_unlock_operations ();
+		return -EFAULT;
+	}
+	ibmphp_print_test ();
+	rc = ibmphp_update_slot_info (slot_cur);
+	ibmphp_unlock_operations(); 
+	return rc;
+}
+
+/**************************************************************
+* HOT REMOVING ADAPTER CARD                                   *
+* INPUT: POINTER TO THE HOTPLUG SLOT STRUCTURE                *
+* OUTPUT: SUCCESS 0 ; FAILURE: UNCONFIGURE , VALIDATE         *
+          DISABLE POWER ,                                    *
+**************************************************************/
+int ibmphp_disable_slot (struct hotplug_slot *hotplug_slot)
+{
+	int rc;
+	struct slot *slot_cur = (struct slot *) hotplug_slot->private;
+	u8 flag = slot_cur->flag;
+
+	slot_cur->flag = TRUE;
+	debug ("DISABLING SLOT... \n"); 
+		
+	ibmphp_lock_operations (); 
+	if (slot_cur == NULL) {
+		ibmphp_unlock_operations ();
+		return -ENODEV;
+	}
+	if (slot_cur->ctrl == NULL) {
+		ibmphp_unlock_operations ();
+		return -ENODEV;
+	}
+	if (flag == TRUE) {
+		rc = validate (slot_cur, DISABLE);	/* checking if powered off already & valid slot # */
+		if (rc) {
+			/*  Need to turn off if was blinking b4 */
+			attn_off (slot_cur);
+			attn_on (slot_cur);
+			if (slot_update (&slot_cur)) {
+				ibmphp_unlock_operations ();
+				return -EFAULT;
+			}
+		
+			ibmphp_update_slot_info (slot_cur);
+			ibmphp_unlock_operations ();
+			return rc;
+		}
+	}
+	attn_LED_blink (slot_cur);
+
+	if (slot_cur->func == NULL) {
+		/* We need this for fncs's that were there on bootup */
+		slot_cur->func = (struct pci_func *) kmalloc (sizeof (struct pci_func), GFP_KERNEL);
+		if (!slot_cur->func) {
+			err ("out of system memory \n");
+			attn_off (slot_cur);
+			attn_on (slot_cur);
+			ibmphp_unlock_operations ();
+			return -ENOMEM;
+		}
+		memset (slot_cur->func, 0, sizeof (struct pci_func));
+		slot_cur->func->busno = slot_cur->bus;
+		slot_cur->func->device = slot_cur->device;
+	}
+
+	if ((rc = ibm_unconfigure_device (slot_cur->func))) {
+		err ("removing from kernel failed... \n");
+		err ("Please check to see if it was statically linked or is in use otherwise. (perhaps the driver is not 'hot-removable')\n");
+		attn_off (slot_cur);
+		attn_on (slot_cur);
+		ibmphp_unlock_operations ();
+		return rc;
+	}
+
+	rc = ibmphp_unconfigure_card (&slot_cur, 0);
+	slot_cur->func = NULL;
+	debug ("in disable_slot. after unconfigure_card \n");
+	if (rc) {
+		err ("could not unconfigure card.\n");
+		attn_off (slot_cur);	/* need to turn off if was blinking b4 */
+		attn_on (slot_cur);
+
+		if (slot_update (&slot_cur)) {
+			ibmphp_unlock_operations ();
+			return -EFAULT;
+		}
+
+		if (flag) 
+			ibmphp_update_slot_info (slot_cur);
+
+		ibmphp_unlock_operations ();
+		return -EFAULT;
+	}
+
+	rc = ibmphp_hpc_writeslot (hotplug_slot->private, HPC_SLOT_OFF);
+	if (rc) {
+		attn_off (slot_cur);
+		attn_on (slot_cur);
+		if (slot_update (&slot_cur)) {
+			ibmphp_unlock_operations ();
+			return -EFAULT;
+		}
+
+		if (flag)
+			ibmphp_update_slot_info (slot_cur);
+
+		ibmphp_unlock_operations ();
+		return rc;
+	}
+
+	attn_off (slot_cur);
+	if (slot_update (&slot_cur)) {
+		ibmphp_unlock_operations ();
+		return -EFAULT;
+	}
+	if (flag) 
+		rc = ibmphp_update_slot_info (slot_cur);
+	else
+		rc = 0;
+
+	ibmphp_print_test ();
+	ibmphp_unlock_operations();
+	return rc;
+}
+
+struct hotplug_slot_ops ibmphp_hotplug_slot_ops = {
+	owner:				THIS_MODULE,
+	set_attention_status:		set_attention_status,
+	enable_slot:			enable_slot,
+	disable_slot:			ibmphp_disable_slot,
+	hardware_test:			NULL,
+	get_power_status:		get_power_status,
+	get_attention_status:		get_attention_status,
+	get_latch_status:		get_latch_status,
+	get_adapter_status:		get_adapter_present,
+/*	get_max_bus_speed_status:	get_max_bus_speed,
+	get_max_adapter_speed_status:	get_max_adapter_speed,
+	get_cur_bus_speed_status:	get_cur_bus_speed,
+	get_card_bus_names_status:	get_card_bus_names,
+*/
+};
+
+static void ibmphp_unload (void)
+{
+	free_slots ();
+	debug ("after slots \n");
+	ibmphp_free_resources ();
+	debug ("after resources \n");
+	ibmphp_free_bus_info_queue ();
+	debug ("after bus info \n");
+	ibmphp_free_ebda_hpc_queue ();
+	debug ("after ebda hpc \n");
+	ibmphp_free_ebda_pci_rsrc_queue ();
+	debug ("after ebda pci rsrc \n");
+}
+
+static int __init ibmphp_init (void)
+{
+	int i = 0;
+	int rc = 0;
+
+	init_flag = 1;
+	ibmphp_pci_root_ops = get_root_pci_ops ();
+	if (ibmphp_pci_root_ops == NULL) {
+		err ("cannot read bus operations... will not be able to read the cards.  Please check your system \n");
+		return -ENODEV;	
+	}
+
+	ibmphp_debug = debug;
+
+	ibmphp_hpc_initvars ();
+
+	for (i = 0; i < 16; i++)
+		irqs[i] = 0;
+
+	if ((rc = ibmphp_access_ebda ())) {
+		ibmphp_unload ();
+		return rc;
+	}
+	debug ("after ibmphp_access_ebda () \n");
+
+	if ((rc = ibmphp_rsrc_init ())) {
+		ibmphp_unload ();
+		return rc;
+	}
+	debug ("AFTER Resource & EBDA INITIALIZATIONS \n");
+
+	max_slots = get_max_slots ();
+
+	if (init_ops ()) {
+		ibmphp_unload ();
+		return -ENODEV;
+	}
+	ibmphp_print_test ();
+	if ((rc = ibmphp_hpc_start_poll_thread ())) {
+		ibmphp_unload ();
+		return -ENODEV;
+	}
+
+	/* lock ourselves into memory with a module count of -1 
+	 * so that no one can unload us. */
+	MOD_DEC_USE_COUNT;
+
+	info (DRIVER_DESC " version: " DRIVER_VERSION "\n");
+
+	return 0;
+}
+
+static void __exit ibmphp_exit (void)
+{
+	ibmphp_hpc_stop_poll_thread ();
+	debug ("after polling \n");
+	ibmphp_unload ();
+	debug ("done \n");
+}
+
+module_init (ibmphp_init);
+module_exit (ibmphp_exit);
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)