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drivers/pci/hotplug/ibmphp_core.c:1414: warning: `ibmphp_exit' defined but not used Signed-off-by: Zhenwen Xu <helight.xu@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
1423 lines
36 KiB
C
1423 lines
36 KiB
C
/*
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* IBM Hot Plug Controller Driver
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*
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* Written By: Chuck Cole, Jyoti Shah, Tong Yu, Irene Zubarev, IBM Corporation
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*
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* Copyright (C) 2001,2003 Greg Kroah-Hartman (greg@kroah.com)
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* Copyright (C) 2001-2003 IBM Corp.
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
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* NON INFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Send feedback to <gregkh@us.ibm.com>
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*
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/pci.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include <linux/wait.h>
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#include "../pci.h"
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#include <asm/pci_x86.h> /* for struct irq_routing_table */
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#include "ibmphp.h"
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#define attn_on(sl) ibmphp_hpc_writeslot (sl, HPC_SLOT_ATTNON)
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#define attn_off(sl) ibmphp_hpc_writeslot (sl, HPC_SLOT_ATTNOFF)
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#define attn_LED_blink(sl) ibmphp_hpc_writeslot (sl, HPC_SLOT_BLINKLED)
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#define get_ctrl_revision(sl, rev) ibmphp_hpc_readslot (sl, READ_REVLEVEL, rev)
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#define get_hpc_options(sl, opt) ibmphp_hpc_readslot (sl, READ_HPCOPTIONS, opt)
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#define DRIVER_VERSION "0.6"
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#define DRIVER_DESC "IBM Hot Plug PCI Controller Driver"
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int ibmphp_debug;
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static int debug;
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module_param(debug, bool, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC (debug, "Debugging mode enabled or not");
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MODULE_LICENSE ("GPL");
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MODULE_DESCRIPTION (DRIVER_DESC);
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struct pci_bus *ibmphp_pci_bus;
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static int max_slots;
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static int irqs[16]; /* PIC mode IRQ's we're using so far (in case MPS
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* tables don't provide default info for empty slots */
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static int init_flag;
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/*
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static int get_max_adapter_speed_1 (struct hotplug_slot *, u8 *, u8);
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static inline int get_max_adapter_speed (struct hotplug_slot *hs, u8 *value)
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{
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return get_max_adapter_speed_1 (hs, value, 1);
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}
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*/
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static inline int get_cur_bus_info(struct slot **sl)
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{
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int rc = 1;
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struct slot * slot_cur = *sl;
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debug("options = %x\n", slot_cur->ctrl->options);
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debug("revision = %x\n", slot_cur->ctrl->revision);
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if (READ_BUS_STATUS(slot_cur->ctrl))
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rc = ibmphp_hpc_readslot(slot_cur, READ_BUSSTATUS, NULL);
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if (rc)
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return rc;
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slot_cur->bus_on->current_speed = CURRENT_BUS_SPEED(slot_cur->busstatus);
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if (READ_BUS_MODE(slot_cur->ctrl))
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slot_cur->bus_on->current_bus_mode =
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CURRENT_BUS_MODE(slot_cur->busstatus);
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else
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slot_cur->bus_on->current_bus_mode = 0xFF;
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debug("busstatus = %x, bus_speed = %x, bus_mode = %x\n",
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slot_cur->busstatus,
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slot_cur->bus_on->current_speed,
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slot_cur->bus_on->current_bus_mode);
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*sl = slot_cur;
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return 0;
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}
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static inline int slot_update(struct slot **sl)
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{
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int rc;
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rc = ibmphp_hpc_readslot(*sl, READ_ALLSTAT, NULL);
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if (rc)
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return rc;
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if (!init_flag)
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rc = get_cur_bus_info(sl);
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return rc;
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}
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static int __init get_max_slots (void)
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{
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struct slot * slot_cur;
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struct list_head * tmp;
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u8 slot_count = 0;
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list_for_each(tmp, &ibmphp_slot_head) {
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slot_cur = list_entry(tmp, struct slot, ibm_slot_list);
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/* sometimes the hot-pluggable slots start with 4 (not always from 1) */
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slot_count = max(slot_count, slot_cur->number);
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}
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return slot_count;
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}
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/* This routine will put the correct slot->device information per slot. It's
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* called from initialization of the slot structures. It will also assign
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* interrupt numbers per each slot.
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* Parameters: struct slot
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* Returns 0 or errors
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*/
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int ibmphp_init_devno(struct slot **cur_slot)
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{
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struct irq_routing_table *rtable;
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int len;
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int loop;
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int i;
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rtable = pcibios_get_irq_routing_table();
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if (!rtable) {
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err("no BIOS routing table...\n");
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return -ENOMEM;
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}
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len = (rtable->size - sizeof(struct irq_routing_table)) /
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sizeof(struct irq_info);
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if (!len) {
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kfree(rtable);
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return -1;
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}
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for (loop = 0; loop < len; loop++) {
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if ((*cur_slot)->number == rtable->slots[loop].slot) {
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if ((*cur_slot)->bus == rtable->slots[loop].bus) {
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(*cur_slot)->device = PCI_SLOT(rtable->slots[loop].devfn);
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for (i = 0; i < 4; i++)
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(*cur_slot)->irq[i] = IO_APIC_get_PCI_irq_vector((int) (*cur_slot)->bus,
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(int) (*cur_slot)->device, i);
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debug("(*cur_slot)->irq[0] = %x\n",
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(*cur_slot)->irq[0]);
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debug("(*cur_slot)->irq[1] = %x\n",
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(*cur_slot)->irq[1]);
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debug("(*cur_slot)->irq[2] = %x\n",
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(*cur_slot)->irq[2]);
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debug("(*cur_slot)->irq[3] = %x\n",
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(*cur_slot)->irq[3]);
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debug("rtable->exlusive_irqs = %x\n",
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rtable->exclusive_irqs);
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debug("rtable->slots[loop].irq[0].bitmap = %x\n",
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rtable->slots[loop].irq[0].bitmap);
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debug("rtable->slots[loop].irq[1].bitmap = %x\n",
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rtable->slots[loop].irq[1].bitmap);
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debug("rtable->slots[loop].irq[2].bitmap = %x\n",
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rtable->slots[loop].irq[2].bitmap);
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debug("rtable->slots[loop].irq[3].bitmap = %x\n",
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rtable->slots[loop].irq[3].bitmap);
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debug("rtable->slots[loop].irq[0].link = %x\n",
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rtable->slots[loop].irq[0].link);
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debug("rtable->slots[loop].irq[1].link = %x\n",
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rtable->slots[loop].irq[1].link);
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debug("rtable->slots[loop].irq[2].link = %x\n",
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rtable->slots[loop].irq[2].link);
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debug("rtable->slots[loop].irq[3].link = %x\n",
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rtable->slots[loop].irq[3].link);
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debug("end of init_devno\n");
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kfree(rtable);
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return 0;
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}
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}
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}
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kfree(rtable);
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return -1;
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}
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static inline int power_on(struct slot *slot_cur)
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{
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u8 cmd = HPC_SLOT_ON;
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int retval;
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retval = ibmphp_hpc_writeslot(slot_cur, cmd);
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if (retval) {
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err("power on failed\n");
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return retval;
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}
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if (CTLR_RESULT(slot_cur->ctrl->status)) {
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err("command not completed successfully in power_on\n");
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return -EIO;
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}
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msleep(3000); /* For ServeRAID cards, and some 66 PCI */
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return 0;
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}
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static inline int power_off(struct slot *slot_cur)
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{
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u8 cmd = HPC_SLOT_OFF;
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int retval;
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retval = ibmphp_hpc_writeslot(slot_cur, cmd);
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if (retval) {
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err("power off failed\n");
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return retval;
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}
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if (CTLR_RESULT(slot_cur->ctrl->status)) {
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err("command not completed successfully in power_off\n");
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retval = -EIO;
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}
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return retval;
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}
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static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 value)
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{
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int rc = 0;
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struct slot *pslot;
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u8 cmd = 0x00; /* avoid compiler warning */
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debug("set_attention_status - Entry hotplug_slot[%lx] value[%x]\n",
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(ulong) hotplug_slot, value);
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ibmphp_lock_operations();
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if (hotplug_slot) {
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switch (value) {
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case HPC_SLOT_ATTN_OFF:
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cmd = HPC_SLOT_ATTNOFF;
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break;
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case HPC_SLOT_ATTN_ON:
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cmd = HPC_SLOT_ATTNON;
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break;
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case HPC_SLOT_ATTN_BLINK:
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cmd = HPC_SLOT_BLINKLED;
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break;
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default:
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rc = -ENODEV;
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err("set_attention_status - Error : invalid input [%x]\n",
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value);
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break;
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}
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if (rc == 0) {
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pslot = hotplug_slot->private;
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if (pslot)
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rc = ibmphp_hpc_writeslot(pslot, cmd);
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else
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rc = -ENODEV;
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}
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} else
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rc = -ENODEV;
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ibmphp_unlock_operations();
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debug("set_attention_status - Exit rc[%d]\n", rc);
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return rc;
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}
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static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 * value)
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{
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int rc = -ENODEV;
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struct slot *pslot;
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struct slot myslot;
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debug("get_attention_status - Entry hotplug_slot[%lx] pvalue[%lx]\n",
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(ulong) hotplug_slot, (ulong) value);
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ibmphp_lock_operations();
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if (hotplug_slot) {
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pslot = hotplug_slot->private;
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if (pslot) {
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memcpy(&myslot, pslot, sizeof(struct slot));
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rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS,
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&(myslot.status));
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if (!rc)
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rc = ibmphp_hpc_readslot(pslot,
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READ_EXTSLOTSTATUS,
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&(myslot.ext_status));
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if (!rc)
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*value = SLOT_ATTN(myslot.status,
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myslot.ext_status);
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}
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}
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ibmphp_unlock_operations();
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debug("get_attention_status - Exit rc[%d] value[%x]\n", rc, *value);
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return rc;
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}
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static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 * value)
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{
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int rc = -ENODEV;
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struct slot *pslot;
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struct slot myslot;
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debug("get_latch_status - Entry hotplug_slot[%lx] pvalue[%lx]\n",
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(ulong) hotplug_slot, (ulong) value);
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ibmphp_lock_operations();
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if (hotplug_slot) {
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pslot = hotplug_slot->private;
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if (pslot) {
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memcpy(&myslot, pslot, sizeof(struct slot));
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rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS,
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&(myslot.status));
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if (!rc)
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*value = SLOT_LATCH(myslot.status);
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}
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}
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ibmphp_unlock_operations();
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debug("get_latch_status - Exit rc[%d] rc[%x] value[%x]\n",
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rc, rc, *value);
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return rc;
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}
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static int get_power_status(struct hotplug_slot *hotplug_slot, u8 * value)
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{
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int rc = -ENODEV;
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struct slot *pslot;
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struct slot myslot;
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debug("get_power_status - Entry hotplug_slot[%lx] pvalue[%lx]\n",
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(ulong) hotplug_slot, (ulong) value);
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ibmphp_lock_operations();
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if (hotplug_slot) {
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pslot = hotplug_slot->private;
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if (pslot) {
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memcpy(&myslot, pslot, sizeof(struct slot));
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rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS,
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&(myslot.status));
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if (!rc)
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*value = SLOT_PWRGD(myslot.status);
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}
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}
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ibmphp_unlock_operations();
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debug("get_power_status - Exit rc[%d] rc[%x] value[%x]\n",
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rc, rc, *value);
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return rc;
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}
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static int get_adapter_present(struct hotplug_slot *hotplug_slot, u8 * value)
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{
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int rc = -ENODEV;
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struct slot *pslot;
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u8 present;
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struct slot myslot;
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debug("get_adapter_status - Entry hotplug_slot[%lx] pvalue[%lx]\n",
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(ulong) hotplug_slot, (ulong) value);
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ibmphp_lock_operations();
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if (hotplug_slot) {
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pslot = hotplug_slot->private;
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if (pslot) {
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memcpy(&myslot, pslot, sizeof(struct slot));
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rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS,
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&(myslot.status));
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if (!rc) {
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present = SLOT_PRESENT(myslot.status);
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if (present == HPC_SLOT_EMPTY)
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*value = 0;
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else
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*value = 1;
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}
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}
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}
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ibmphp_unlock_operations();
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debug("get_adapter_present - Exit rc[%d] value[%x]\n", rc, *value);
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return rc;
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}
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static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
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{
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int rc = -ENODEV;
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struct slot *pslot;
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u8 mode = 0;
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debug("%s - Entry hotplug_slot[%p] pvalue[%p]\n", __func__,
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hotplug_slot, value);
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ibmphp_lock_operations();
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if (hotplug_slot) {
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pslot = hotplug_slot->private;
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if (pslot) {
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rc = 0;
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mode = pslot->supported_bus_mode;
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*value = pslot->supported_speed;
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switch (*value) {
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case BUS_SPEED_33:
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break;
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case BUS_SPEED_66:
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if (mode == BUS_MODE_PCIX)
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*value += 0x01;
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break;
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case BUS_SPEED_100:
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case BUS_SPEED_133:
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*value = pslot->supported_speed + 0x01;
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break;
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default:
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/* Note (will need to change): there would be soon 256, 512 also */
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rc = -ENODEV;
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}
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}
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}
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ibmphp_unlock_operations();
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debug("%s - Exit rc[%d] value[%x]\n", __func__, rc, *value);
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return rc;
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}
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static int get_cur_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
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{
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int rc = -ENODEV;
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struct slot *pslot;
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u8 mode = 0;
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debug("%s - Entry hotplug_slot[%p] pvalue[%p]\n", __func__,
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hotplug_slot, value);
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ibmphp_lock_operations();
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if (hotplug_slot) {
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pslot = hotplug_slot->private;
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if (pslot) {
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rc = get_cur_bus_info(&pslot);
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if (!rc) {
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mode = pslot->bus_on->current_bus_mode;
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*value = pslot->bus_on->current_speed;
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switch (*value) {
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case BUS_SPEED_33:
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break;
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case BUS_SPEED_66:
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if (mode == BUS_MODE_PCIX)
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*value += 0x01;
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else if (mode == BUS_MODE_PCI)
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;
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else
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*value = PCI_SPEED_UNKNOWN;
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break;
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case BUS_SPEED_100:
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case BUS_SPEED_133:
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*value += 0x01;
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break;
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default:
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/* Note of change: there would also be 256, 512 soon */
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rc = -ENODEV;
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}
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}
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}
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}
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ibmphp_unlock_operations();
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debug("%s - Exit rc[%d] value[%x]\n", __func__, rc, *value);
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return rc;
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}
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/*
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static int get_max_adapter_speed_1(struct hotplug_slot *hotplug_slot, u8 * value, u8 flag)
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{
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int rc = -ENODEV;
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struct slot *pslot;
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struct slot myslot;
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debug("get_max_adapter_speed_1 - Entry hotplug_slot[%lx] pvalue[%lx]\n",
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(ulong)hotplug_slot, (ulong) value);
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if (flag)
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ibmphp_lock_operations();
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if (hotplug_slot && value) {
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pslot = hotplug_slot->private;
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if (pslot) {
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memcpy(&myslot, pslot, sizeof(struct slot));
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rc = ibmphp_hpc_readslot(pslot, READ_SLOTSTATUS,
|
|
&(myslot.status));
|
|
|
|
if (!(SLOT_LATCH (myslot.status)) &&
|
|
(SLOT_PRESENT (myslot.status))) {
|
|
rc = ibmphp_hpc_readslot(pslot,
|
|
READ_EXTSLOTSTATUS,
|
|
&(myslot.ext_status));
|
|
if (!rc)
|
|
*value = SLOT_SPEED(myslot.ext_status);
|
|
} else
|
|
*value = MAX_ADAPTER_NONE;
|
|
}
|
|
}
|
|
|
|
if (flag)
|
|
ibmphp_unlock_operations();
|
|
|
|
debug("get_max_adapter_speed_1 - Exit rc[%d] value[%x]\n", rc, *value);
|
|
return rc;
|
|
}
|
|
|
|
static int get_bus_name(struct hotplug_slot *hotplug_slot, char * value)
|
|
{
|
|
int rc = -ENODEV;
|
|
struct slot *pslot = NULL;
|
|
|
|
debug("get_bus_name - Entry hotplug_slot[%lx]\n", (ulong)hotplug_slot);
|
|
|
|
ibmphp_lock_operations();
|
|
|
|
if (hotplug_slot) {
|
|
pslot = hotplug_slot->private;
|
|
if (pslot) {
|
|
rc = 0;
|
|
snprintf(value, 100, "Bus %x", pslot->bus);
|
|
}
|
|
} else
|
|
rc = -ENODEV;
|
|
|
|
ibmphp_unlock_operations();
|
|
debug("get_bus_name - 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 init_ops(void)
|
|
{
|
|
struct slot *slot_cur;
|
|
struct list_head *tmp;
|
|
int retval;
|
|
int rc;
|
|
|
|
list_for_each(tmp, &ibmphp_slot_head) {
|
|
slot_cur = list_entry(tmp, struct slot, ibm_slot_list);
|
|
|
|
if (!slot_cur)
|
|
return -ENODEV;
|
|
|
|
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\n", slot_cur->status);
|
|
debug("ext_status = %x\n", slot_cur->ext_status);
|
|
debug("SLOT_POWER = %x\n", SLOT_POWER(slot_cur->status));
|
|
debug("SLOT_PRESENT = %x\n", SLOT_PRESENT(slot_cur->status));
|
|
debug("SLOT_LATCH = %x\n", SLOT_LATCH(slot_cur->status));
|
|
|
|
if ((SLOT_PWRGD(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;
|
|
|
|
switch (opn) {
|
|
case ENABLE:
|
|
if (!(SLOT_PWRGD(slot_cur->status)) &&
|
|
(SLOT_PRESENT(slot_cur->status)) &&
|
|
!(SLOT_LATCH(slot_cur->status)))
|
|
return 0;
|
|
break;
|
|
case DISABLE:
|
|
if ((SLOT_PWRGD(slot_cur->status)) &&
|
|
(SLOT_PRESENT(slot_cur->status)) &&
|
|
!(SLOT_LATCH(slot_cur->status)))
|
|
return 0;
|
|
break;
|
|
default:
|
|
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;
|
|
int rc;
|
|
u8 bus_speed;
|
|
u8 mode;
|
|
|
|
info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL);
|
|
if (!info) {
|
|
err("out of system memory\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
info->power_status = SLOT_PWRGD(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;
|
|
mode = slot_cur->bus_on->current_bus_mode;
|
|
|
|
switch (bus_speed) {
|
|
case BUS_SPEED_33:
|
|
break;
|
|
case BUS_SPEED_66:
|
|
if (mode == BUS_MODE_PCIX)
|
|
bus_speed += 0x01;
|
|
else if (mode == BUS_MODE_PCI)
|
|
;
|
|
else
|
|
bus_speed = PCI_SPEED_UNKNOWN;
|
|
break;
|
|
case BUS_SPEED_100:
|
|
case BUS_SPEED_133:
|
|
bus_speed += 0x01;
|
|
break;
|
|
default:
|
|
bus_speed = PCI_SPEED_UNKNOWN;
|
|
}
|
|
|
|
info->cur_bus_speed = bus_speed;
|
|
info->max_bus_speed = slot_cur->hotplug_slot->info->max_bus_speed;
|
|
// To do: bus_names
|
|
|
|
rc = pci_hp_change_slot_info(slot_cur->hotplug_slot, 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 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;
|
|
|
|
debug("%s -- enter\n", __func__);
|
|
|
|
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);
|
|
}
|
|
debug("%s -- exit\n", __func__);
|
|
}
|
|
|
|
static void ibm_unconfigure_device(struct pci_func *func)
|
|
{
|
|
struct pci_dev *temp;
|
|
u8 j;
|
|
|
|
debug("inside %s\n", __func__);
|
|
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_get_bus_and_slot(func->busno, (func->device << 3) | j);
|
|
if (temp) {
|
|
pci_remove_bus_device(temp);
|
|
pci_dev_put(temp);
|
|
}
|
|
}
|
|
pci_dev_put(func->dev);
|
|
}
|
|
|
|
/*
|
|
* The following function is to fix kernel bug regarding
|
|
* getting bus entries, here we manually add those primary
|
|
* bus entries to kernel bus structure whenever apply
|
|
*/
|
|
static u8 bus_structure_fixup(u8 busno)
|
|
{
|
|
struct pci_bus *bus;
|
|
struct pci_dev *dev;
|
|
u16 l;
|
|
|
|
if (pci_find_bus(0, busno) || !(ibmphp_find_same_bus_num(busno)))
|
|
return 1;
|
|
|
|
bus = kmalloc(sizeof(*bus), GFP_KERNEL);
|
|
if (!bus) {
|
|
err("%s - out of memory\n", __func__);
|
|
return 1;
|
|
}
|
|
dev = kmalloc(sizeof(*dev), GFP_KERNEL);
|
|
if (!dev) {
|
|
kfree(bus);
|
|
err("%s - out of memory\n", __func__);
|
|
return 1;
|
|
}
|
|
|
|
bus->number = busno;
|
|
bus->ops = ibmphp_pci_bus->ops;
|
|
dev->bus = bus;
|
|
for (dev->devfn = 0; dev->devfn < 256; dev->devfn += 8) {
|
|
if (!pci_read_config_word(dev, PCI_VENDOR_ID, &l) &&
|
|
(l != 0x0000) && (l != 0xffff)) {
|
|
debug("%s - Inside bus_struture_fixup()\n",
|
|
__func__);
|
|
pci_scan_bus(busno, ibmphp_pci_bus->ops, NULL);
|
|
break;
|
|
}
|
|
}
|
|
|
|
kfree(dev);
|
|
kfree(bus);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int ibm_configure_device(struct pci_func *func)
|
|
{
|
|
unsigned char bus;
|
|
struct pci_bus *child;
|
|
int num;
|
|
int flag = 0; /* this is to make sure we don't double scan the bus,
|
|
for bridged devices primarily */
|
|
|
|
if (!(bus_structure_fixup(func->busno)))
|
|
flag = 1;
|
|
if (func->dev == NULL)
|
|
func->dev = pci_get_bus_and_slot(func->busno,
|
|
PCI_DEVFN(func->device, func->function));
|
|
|
|
if (func->dev == NULL) {
|
|
struct pci_bus *bus = pci_find_bus(0, func->busno);
|
|
if (!bus)
|
|
return 0;
|
|
|
|
num = pci_scan_slot(bus,
|
|
PCI_DEVFN(func->device, func->function));
|
|
if (num)
|
|
pci_bus_add_devices(bus);
|
|
|
|
func->dev = pci_get_bus_and_slot(func->busno,
|
|
PCI_DEVFN(func->device, func->function));
|
|
if (func->dev == NULL) {
|
|
err("ERROR... : pci_dev still NULL\n");
|
|
return 0;
|
|
}
|
|
}
|
|
if (!(flag) && (func->dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)) {
|
|
pci_read_config_byte(func->dev, PCI_SECONDARY_BUS, &bus);
|
|
child = pci_add_new_bus(func->dev->bus, func->dev, bus);
|
|
pci_do_scan_bus(child);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*******************************************************
|
|
* 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);
|
|
if (!tmp_slot)
|
|
return 0;
|
|
rc = slot_update(&tmp_slot);
|
|
if (rc)
|
|
return 0;
|
|
if (SLOT_PRESENT(tmp_slot->status) &&
|
|
SLOT_PWRGD(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 and bus capability
|
|
* Parameters: slot
|
|
* Returns: bus is set (0) or error code
|
|
***********************************************************/
|
|
static int set_bus(struct slot * slot_cur)
|
|
{
|
|
int rc;
|
|
u8 speed;
|
|
u8 cmd = 0x0;
|
|
int retval;
|
|
static struct pci_device_id ciobx[] = {
|
|
{ PCI_DEVICE(PCI_VENDOR_ID_SERVERWORKS, 0x0101) },
|
|
{ },
|
|
};
|
|
|
|
debug("%s - entry slot # %d\n", __func__, 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)) {
|
|
if ((slot_cur->supported_speed >= BUS_SPEED_66) &&
|
|
(slot_cur->supported_bus_mode == BUS_MODE_PCIX))
|
|
cmd = HPC_BUS_66PCIXMODE;
|
|
else if (!SLOT_BUS_MODE(slot_cur->ext_status))
|
|
/* if max slot/bus capability is 66 pci
|
|
and there's no bus mode mismatch, then
|
|
the adapter supports 66 pci */
|
|
cmd = HPC_BUS_66CONVMODE;
|
|
else
|
|
cmd = HPC_BUS_33CONVMODE;
|
|
} else {
|
|
if (slot_cur->supported_speed >= BUS_SPEED_66)
|
|
cmd = HPC_BUS_66CONVMODE;
|
|
else
|
|
cmd = HPC_BUS_33CONVMODE;
|
|
}
|
|
break;
|
|
case HPC_SLOT_SPEED_133:
|
|
switch (slot_cur->supported_speed) {
|
|
case BUS_SPEED_33:
|
|
cmd = HPC_BUS_33CONVMODE;
|
|
break;
|
|
case BUS_SPEED_66:
|
|
if (slot_cur->supported_bus_mode == BUS_MODE_PCIX)
|
|
cmd = HPC_BUS_66PCIXMODE;
|
|
else
|
|
cmd = HPC_BUS_66CONVMODE;
|
|
break;
|
|
case BUS_SPEED_100:
|
|
cmd = HPC_BUS_100PCIXMODE;
|
|
break;
|
|
case BUS_SPEED_133:
|
|
/* This is to take care of the bug in CIOBX chip */
|
|
if (pci_dev_present(ciobx))
|
|
ibmphp_hpc_writeslot(slot_cur,
|
|
HPC_BUS_100PCIXMODE);
|
|
cmd = HPC_BUS_133PCIXMODE;
|
|
break;
|
|
default:
|
|
err("Wrong bus speed\n");
|
|
return -ENODEV;
|
|
}
|
|
break;
|
|
default:
|
|
err("wrong slot speed\n");
|
|
return -ENODEV;
|
|
}
|
|
debug("setting bus speed for slot %d, cmd %x\n",
|
|
slot_cur->number, cmd);
|
|
retval = ibmphp_hpc_writeslot(slot_cur, cmd);
|
|
if (retval) {
|
|
err("setting bus speed failed\n");
|
|
return retval;
|
|
}
|
|
if (CTLR_RESULT(slot_cur->ctrl->status)) {
|
|
err("command not completed successfully in set_bus\n");
|
|
return -EIO;
|
|
}
|
|
}
|
|
/* This is for x440, once Brandon fixes the firmware,
|
|
will not need this delay */
|
|
msleep(1000);
|
|
debug("%s -Exit\n", __func__);
|
|
return 0;
|
|
}
|
|
|
|
/* This routine checks the bus limitations that the slot is on from the BIOS.
|
|
* This is used in deciding whether or not to power up the slot.
|
|
* (electrical/spec limitations. For example, >1 133 MHz or >2 66 PCI cards on
|
|
* same bus)
|
|
* Parameters: slot
|
|
* Returns: 0 = no limitations, -EINVAL = exceeded limitations on the bus
|
|
*/
|
|
static int check_limitations(struct slot *slot_cur)
|
|
{
|
|
u8 i;
|
|
struct slot * tmp_slot;
|
|
u8 count = 0;
|
|
u8 limitation = 0;
|
|
|
|
for (i = slot_cur->bus_on->slot_min; i <= slot_cur->bus_on->slot_max; i++) {
|
|
tmp_slot = ibmphp_get_slot_from_physical_num(i);
|
|
if (!tmp_slot)
|
|
return -ENODEV;
|
|
if ((SLOT_PWRGD(tmp_slot->status)) &&
|
|
!(SLOT_CONNECT(tmp_slot->status)))
|
|
count++;
|
|
}
|
|
get_cur_bus_info(&slot_cur);
|
|
switch (slot_cur->bus_on->current_speed) {
|
|
case BUS_SPEED_33:
|
|
limitation = slot_cur->bus_on->slots_at_33_conv;
|
|
break;
|
|
case BUS_SPEED_66:
|
|
if (slot_cur->bus_on->current_bus_mode == BUS_MODE_PCIX)
|
|
limitation = slot_cur->bus_on->slots_at_66_pcix;
|
|
else
|
|
limitation = slot_cur->bus_on->slots_at_66_conv;
|
|
break;
|
|
case BUS_SPEED_100:
|
|
limitation = slot_cur->bus_on->slots_at_100_pcix;
|
|
break;
|
|
case BUS_SPEED_133:
|
|
limitation = slot_cur->bus_on->slots_at_133_pcix;
|
|
break;
|
|
}
|
|
|
|
if ((count + 1) > limitation)
|
|
return -EINVAL;
|
|
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;
|
|
struct pci_func *tmp_func;
|
|
|
|
ibmphp_lock_operations();
|
|
|
|
debug("ENABLING SLOT........\n");
|
|
slot_cur = hs->private;
|
|
|
|
if ((rc = validate(slot_cur, ENABLE))) {
|
|
err("validate function failed\n");
|
|
goto error_nopower;
|
|
}
|
|
|
|
attn_LED_blink(slot_cur);
|
|
|
|
rc = set_bus(slot_cur);
|
|
if (rc) {
|
|
err("was not able to set the bus\n");
|
|
goto error_nopower;
|
|
}
|
|
|
|
/*-----------------debugging------------------------------*/
|
|
get_cur_bus_info(&slot_cur);
|
|
debug("the current bus speed right after set_bus = %x\n",
|
|
slot_cur->bus_on->current_speed);
|
|
/*----------------------------------------------------------*/
|
|
|
|
rc = check_limitations(slot_cur);
|
|
if (rc) {
|
|
err("Adding this card exceeds the limitations of this bus.\n");
|
|
err("(i.e., >1 133MHz cards running on same bus, or "
|
|
">2 66 PCI cards running on same bus.\n");
|
|
err("Try hot-adding into another bus\n");
|
|
rc = -EINVAL;
|
|
goto error_nopower;
|
|
}
|
|
|
|
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);
|
|
rc = -ENODEV;
|
|
goto exit;
|
|
}
|
|
/* Check to see the error of why it failed */
|
|
if ((SLOT_POWER(slot_cur->status)) &&
|
|
!(SLOT_PWRGD(slot_cur->status)))
|
|
err("power fault occurred trying to power up\n");
|
|
else if (SLOT_BUS_SPEED(slot_cur->status)) {
|
|
err("bus speed mismatch occurred. 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 occurred. please check "
|
|
"current bus mode and card capability\n");
|
|
print_card_capability(slot_cur);
|
|
}
|
|
ibmphp_update_slot_info(slot_cur);
|
|
goto exit;
|
|
}
|
|
debug("after power_on\n");
|
|
/*-----------------------debugging---------------------------*/
|
|
get_cur_bus_info(&slot_cur);
|
|
debug("the current bus speed right after power_on = %x\n",
|
|
slot_cur->bus_on->current_speed);
|
|
/*----------------------------------------------------------*/
|
|
|
|
rc = slot_update(&slot_cur);
|
|
if (rc)
|
|
goto error_power;
|
|
|
|
rc = -EINVAL;
|
|
if (SLOT_POWER(slot_cur->status) && !(SLOT_PWRGD(slot_cur->status))) {
|
|
err("power fault occurred trying to power up...\n");
|
|
goto error_power;
|
|
}
|
|
if (SLOT_POWER(slot_cur->status) && (SLOT_BUS_SPEED(slot_cur->status))) {
|
|
err("bus speed mismatch occurred. please check current bus "
|
|
"speed and card capability\n");
|
|
print_card_capability(slot_cur);
|
|
goto error_power;
|
|
}
|
|
/* Don't think this case will happen after above checks...
|
|
* but just in case, for paranoia sake */
|
|
if (!(SLOT_POWER(slot_cur->status))) {
|
|
err("power on failed...\n");
|
|
goto error_power;
|
|
}
|
|
|
|
slot_cur->func = kzalloc(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");
|
|
rc = -ENOMEM;
|
|
goto error_power;
|
|
}
|
|
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");
|
|
/* true because don't need to actually deallocate resources,
|
|
* just remove references */
|
|
ibmphp_unconfigure_card(&slot_cur, 1);
|
|
debug("after unconfigure_card\n");
|
|
slot_cur->func = NULL;
|
|
rc = -ENOMEM;
|
|
goto error_power;
|
|
}
|
|
|
|
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)) {
|
|
rc = -EFAULT;
|
|
goto exit;
|
|
}
|
|
ibmphp_print_test();
|
|
rc = ibmphp_update_slot_info(slot_cur);
|
|
exit:
|
|
ibmphp_unlock_operations();
|
|
return rc;
|
|
|
|
error_nopower:
|
|
attn_off(slot_cur); /* need to turn off if was blinking b4 */
|
|
attn_on(slot_cur);
|
|
error_cont:
|
|
rcpr = slot_update(&slot_cur);
|
|
if (rcpr) {
|
|
rc = rcpr;
|
|
goto exit;
|
|
}
|
|
ibmphp_update_slot_info(slot_cur);
|
|
goto exit;
|
|
|
|
error_power:
|
|
attn_off(slot_cur); /* need to turn off if was blinking b4 */
|
|
attn_on(slot_cur);
|
|
rcpr = power_off(slot_cur);
|
|
if (rcpr) {
|
|
rc = rcpr;
|
|
goto exit;
|
|
}
|
|
goto error_cont;
|
|
}
|
|
|
|
/**************************************************************
|
|
* HOT REMOVING ADAPTER CARD *
|
|
* INPUT: POINTER TO THE HOTPLUG SLOT STRUCTURE *
|
|
* OUTPUT: SUCCESS 0 ; FAILURE: UNCONFIGURE , VALIDATE *
|
|
DISABLE POWER , *
|
|
**************************************************************/
|
|
static int ibmphp_disable_slot(struct hotplug_slot *hotplug_slot)
|
|
{
|
|
struct slot *slot = hotplug_slot->private;
|
|
int rc;
|
|
|
|
ibmphp_lock_operations();
|
|
rc = ibmphp_do_disable_slot(slot);
|
|
ibmphp_unlock_operations();
|
|
return rc;
|
|
}
|
|
|
|
int ibmphp_do_disable_slot(struct slot *slot_cur)
|
|
{
|
|
int rc;
|
|
u8 flag;
|
|
|
|
debug("DISABLING SLOT...\n");
|
|
|
|
if ((slot_cur == NULL) || (slot_cur->ctrl == NULL)) {
|
|
return -ENODEV;
|
|
}
|
|
|
|
flag = slot_cur->flag;
|
|
slot_cur->flag = 1;
|
|
|
|
if (flag == 1) {
|
|
rc = validate(slot_cur, DISABLE);
|
|
/* checking if powered off already & valid slot # */
|
|
if (rc)
|
|
goto error;
|
|
}
|
|
attn_LED_blink(slot_cur);
|
|
|
|
if (slot_cur->func == NULL) {
|
|
/* We need this for fncs's that were there on bootup */
|
|
slot_cur->func = kzalloc(sizeof(struct pci_func), GFP_KERNEL);
|
|
if (!slot_cur->func) {
|
|
err("out of system memory\n");
|
|
rc = -ENOMEM;
|
|
goto error;
|
|
}
|
|
slot_cur->func->busno = slot_cur->bus;
|
|
slot_cur->func->device = slot_cur->device;
|
|
}
|
|
|
|
ibm_unconfigure_device(slot_cur->func);
|
|
|
|
/* If we got here from latch suddenly opening on operating card or
|
|
a power fault, there's no power to the card, so cannot
|
|
read from it to determine what resources it occupied. This operation
|
|
is forbidden anyhow. The best we can do is remove it from kernel
|
|
lists at least */
|
|
|
|
if (!flag) {
|
|
attn_off(slot_cur);
|
|
return 0;
|
|
}
|
|
|
|
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");
|
|
goto error;
|
|
}
|
|
|
|
rc = ibmphp_hpc_writeslot(slot_cur, HPC_SLOT_OFF);
|
|
if (rc)
|
|
goto error;
|
|
|
|
attn_off(slot_cur);
|
|
rc = slot_update(&slot_cur);
|
|
if (rc)
|
|
goto exit;
|
|
|
|
rc = ibmphp_update_slot_info(slot_cur);
|
|
ibmphp_print_test();
|
|
exit:
|
|
return rc;
|
|
|
|
error:
|
|
/* Need to turn off if was blinking b4 */
|
|
attn_off(slot_cur);
|
|
attn_on(slot_cur);
|
|
if (slot_update(&slot_cur)) {
|
|
rc = -EFAULT;
|
|
goto exit;
|
|
}
|
|
if (flag)
|
|
ibmphp_update_slot_info(slot_cur);
|
|
goto exit;
|
|
}
|
|
|
|
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 = get_max_bus_speed,
|
|
.get_cur_bus_speed = get_cur_bus_speed,
|
|
/* .get_max_adapter_speed = get_max_adapter_speed,
|
|
.get_bus_name_status = get_bus_name,
|
|
*/
|
|
};
|
|
|
|
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");
|
|
kfree(ibmphp_pci_bus);
|
|
}
|
|
|
|
static int __init ibmphp_init(void)
|
|
{
|
|
struct pci_bus *bus;
|
|
int i = 0;
|
|
int rc = 0;
|
|
|
|
init_flag = 1;
|
|
|
|
info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
|
|
|
|
ibmphp_pci_bus = kmalloc(sizeof(*ibmphp_pci_bus), GFP_KERNEL);
|
|
if (!ibmphp_pci_bus) {
|
|
err("out of memory\n");
|
|
rc = -ENOMEM;
|
|
goto exit;
|
|
}
|
|
|
|
bus = pci_find_bus(0, 0);
|
|
if (!bus) {
|
|
err("Can't find the root pci bus, can not continue\n");
|
|
rc = -ENODEV;
|
|
goto error;
|
|
}
|
|
memcpy(ibmphp_pci_bus, bus, sizeof(*ibmphp_pci_bus));
|
|
|
|
ibmphp_debug = debug;
|
|
|
|
ibmphp_hpc_initvars();
|
|
|
|
for (i = 0; i < 16; i++)
|
|
irqs[i] = 0;
|
|
|
|
if ((rc = ibmphp_access_ebda()))
|
|
goto error;
|
|
debug("after ibmphp_access_ebda()\n");
|
|
|
|
if ((rc = ibmphp_rsrc_init()))
|
|
goto error;
|
|
debug("AFTER Resource & EBDA INITIALIZATIONS\n");
|
|
|
|
max_slots = get_max_slots();
|
|
|
|
if ((rc = ibmphp_register_pci()))
|
|
goto error;
|
|
|
|
if (init_ops()) {
|
|
rc = -ENODEV;
|
|
goto error;
|
|
}
|
|
|
|
ibmphp_print_test();
|
|
if ((rc = ibmphp_hpc_start_poll_thread())) {
|
|
goto error;
|
|
}
|
|
|
|
exit:
|
|
return rc;
|
|
|
|
error:
|
|
ibmphp_unload();
|
|
goto exit;
|
|
}
|
|
|
|
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);
|