forked from Minki/linux
06c6d271f4
PCI_ROM_ADDRESS is a 32 bit register and as such should be accessed using pci_bus_{read,write}_config_dword(). A recent audit of drivers/ turned up several cases of byte- and word-sized accesses. The harmful ones were fixed by Linus directly. This patches up one of the remaining harmless-but-still-wrong cases caught in the dragnet. Signed-off-by: Adam Kropelin <akropel1@rochester.rr.com> Cc: <kristen.c.accardi@intel.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2848 lines
77 KiB
C
2848 lines
77 KiB
C
/*
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* Standard Hot Plug Controller Driver
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*
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* Copyright (C) 1995,2001 Compaq Computer Corporation
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* Copyright (C) 2001 Greg Kroah-Hartman (greg@kroah.com)
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* Copyright (C) 2001 IBM Corp.
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* Copyright (C) 2003-2004 Intel Corporation
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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 <greg@kroah.com>, <kristen.c.accardi@intel.com>
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*
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*/
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/workqueue.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 <linux/smp_lock.h>
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#include <linux/pci.h>
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#include "shpchp.h"
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#include "shpchprm.h"
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static u32 configure_new_device(struct controller *ctrl, struct pci_func *func,
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u8 behind_bridge, struct resource_lists *resources, u8 bridge_bus, u8 bridge_dev);
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static int configure_new_function( struct controller *ctrl, struct pci_func *func,
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u8 behind_bridge, struct resource_lists *resources, u8 bridge_bus, u8 bridge_dev);
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static void interrupt_event_handler(struct controller *ctrl);
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static struct semaphore event_semaphore; /* mutex for process loop (up if something to process) */
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static struct semaphore event_exit; /* guard ensure thread has exited before calling it quits */
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static int event_finished;
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static unsigned long pushbutton_pending; /* = 0 */
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u8 shpchp_disk_irq;
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u8 shpchp_nic_irq;
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u8 shpchp_handle_attention_button(u8 hp_slot, void *inst_id)
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{
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struct controller *ctrl = (struct controller *) inst_id;
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struct slot *p_slot;
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u8 rc = 0;
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u8 getstatus;
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struct pci_func *func;
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struct event_info *taskInfo;
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/* Attention Button Change */
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dbg("shpchp: Attention button interrupt received.\n");
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func = shpchp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0);
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/* This is the structure that tells the worker thread what to do */
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taskInfo = &(ctrl->event_queue[ctrl->next_event]);
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p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
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p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save));
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p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
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ctrl->next_event = (ctrl->next_event + 1) % 10;
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taskInfo->hp_slot = hp_slot;
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rc++;
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/*
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* Button pressed - See if need to TAKE ACTION!!!
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*/
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info("Button pressed on Slot(%d)\n", ctrl->first_slot + hp_slot);
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taskInfo->event_type = INT_BUTTON_PRESS;
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if ((p_slot->state == BLINKINGON_STATE)
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|| (p_slot->state == BLINKINGOFF_STATE)) {
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/* Cancel if we are still blinking; this means that we press the
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* attention again before the 5 sec. limit expires to cancel hot-add
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* or hot-remove
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*/
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taskInfo->event_type = INT_BUTTON_CANCEL;
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info("Button cancel on Slot(%d)\n", ctrl->first_slot + hp_slot);
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} else if ((p_slot->state == POWERON_STATE)
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|| (p_slot->state == POWEROFF_STATE)) {
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/* Ignore if the slot is on power-on or power-off state; this
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* means that the previous attention button action to hot-add or
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* hot-remove is undergoing
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*/
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taskInfo->event_type = INT_BUTTON_IGNORE;
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info("Button ignore on Slot(%d)\n", ctrl->first_slot + hp_slot);
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}
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if (rc)
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up(&event_semaphore); /* signal event thread that new event is posted */
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return 0;
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}
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u8 shpchp_handle_switch_change(u8 hp_slot, void *inst_id)
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{
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struct controller *ctrl = (struct controller *) inst_id;
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struct slot *p_slot;
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u8 rc = 0;
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u8 getstatus;
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struct pci_func *func;
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struct event_info *taskInfo;
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/* Switch Change */
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dbg("shpchp: Switch interrupt received.\n");
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func = shpchp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0);
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/* This is the structure that tells the worker thread
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* what to do
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*/
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taskInfo = &(ctrl->event_queue[ctrl->next_event]);
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ctrl->next_event = (ctrl->next_event + 1) % 10;
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taskInfo->hp_slot = hp_slot;
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rc++;
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p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
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p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save));
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p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
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dbg("%s: Card present %x Power status %x\n", __FUNCTION__,
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func->presence_save, func->pwr_save);
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if (getstatus) {
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/*
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* Switch opened
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*/
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info("Latch open on Slot(%d)\n", ctrl->first_slot + hp_slot);
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func->switch_save = 0;
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taskInfo->event_type = INT_SWITCH_OPEN;
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if (func->pwr_save && func->presence_save) {
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taskInfo->event_type = INT_POWER_FAULT;
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err("Surprise Removal of card\n");
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}
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} else {
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/*
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* Switch closed
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*/
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info("Latch close on Slot(%d)\n", ctrl->first_slot + hp_slot);
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func->switch_save = 0x10;
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taskInfo->event_type = INT_SWITCH_CLOSE;
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}
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if (rc)
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up(&event_semaphore); /* signal event thread that new event is posted */
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return rc;
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}
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u8 shpchp_handle_presence_change(u8 hp_slot, void *inst_id)
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{
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struct controller *ctrl = (struct controller *) inst_id;
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struct slot *p_slot;
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u8 rc = 0;
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/*u8 temp_byte;*/
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struct pci_func *func;
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struct event_info *taskInfo;
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/* Presence Change */
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dbg("shpchp: Presence/Notify input change.\n");
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func = shpchp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0);
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/* This is the structure that tells the worker thread
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* what to do
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*/
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taskInfo = &(ctrl->event_queue[ctrl->next_event]);
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ctrl->next_event = (ctrl->next_event + 1) % 10;
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taskInfo->hp_slot = hp_slot;
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rc++;
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p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
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/*
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* Save the presence state
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*/
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p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save));
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if (func->presence_save) {
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/*
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* Card Present
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*/
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info("Card present on Slot(%d)\n", ctrl->first_slot + hp_slot);
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taskInfo->event_type = INT_PRESENCE_ON;
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} else {
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/*
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* Not Present
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*/
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info("Card not present on Slot(%d)\n", ctrl->first_slot + hp_slot);
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taskInfo->event_type = INT_PRESENCE_OFF;
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}
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if (rc)
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up(&event_semaphore); /* signal event thread that new event is posted */
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return rc;
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}
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u8 shpchp_handle_power_fault(u8 hp_slot, void *inst_id)
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{
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struct controller *ctrl = (struct controller *) inst_id;
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struct slot *p_slot;
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u8 rc = 0;
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struct pci_func *func;
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struct event_info *taskInfo;
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/* Power fault */
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dbg("shpchp: Power fault interrupt received.\n");
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func = shpchp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0);
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/* This is the structure that tells the worker thread
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* what to do
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*/
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taskInfo = &(ctrl->event_queue[ctrl->next_event]);
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ctrl->next_event = (ctrl->next_event + 1) % 10;
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taskInfo->hp_slot = hp_slot;
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rc++;
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p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
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if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) {
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/*
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* Power fault Cleared
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*/
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info("Power fault cleared on Slot(%d)\n", ctrl->first_slot + hp_slot);
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func->status = 0x00;
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taskInfo->event_type = INT_POWER_FAULT_CLEAR;
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} else {
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/*
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* Power fault
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*/
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info("Power fault on Slot(%d)\n", ctrl->first_slot + hp_slot);
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taskInfo->event_type = INT_POWER_FAULT;
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/* set power fault status for this board */
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func->status = 0xFF;
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info("power fault bit %x set\n", hp_slot);
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}
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if (rc)
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up(&event_semaphore); /* signal event thread that new event is posted */
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return rc;
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}
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/*
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* sort_by_size
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*
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* Sorts nodes on the list by their length.
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* Smallest first.
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*
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*/
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static int sort_by_size(struct pci_resource **head)
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{
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struct pci_resource *current_res;
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struct pci_resource *next_res;
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int out_of_order = 1;
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if (!(*head))
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return(1);
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if (!((*head)->next))
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return(0);
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while (out_of_order) {
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out_of_order = 0;
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/* Special case for swapping list head */
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if (((*head)->next) &&
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((*head)->length > (*head)->next->length)) {
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out_of_order++;
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current_res = *head;
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*head = (*head)->next;
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current_res->next = (*head)->next;
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(*head)->next = current_res;
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}
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current_res = *head;
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while (current_res->next && current_res->next->next) {
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if (current_res->next->length > current_res->next->next->length) {
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out_of_order++;
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next_res = current_res->next;
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current_res->next = current_res->next->next;
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current_res = current_res->next;
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next_res->next = current_res->next;
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current_res->next = next_res;
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} else
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current_res = current_res->next;
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}
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} /* End of out_of_order loop */
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return(0);
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}
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/*
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* sort_by_max_size
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*
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* Sorts nodes on the list by their length.
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* Largest first.
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*
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*/
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static int sort_by_max_size(struct pci_resource **head)
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{
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struct pci_resource *current_res;
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struct pci_resource *next_res;
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int out_of_order = 1;
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if (!(*head))
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return(1);
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if (!((*head)->next))
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return(0);
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while (out_of_order) {
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out_of_order = 0;
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/* Special case for swapping list head */
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if (((*head)->next) &&
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((*head)->length < (*head)->next->length)) {
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out_of_order++;
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current_res = *head;
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*head = (*head)->next;
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current_res->next = (*head)->next;
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(*head)->next = current_res;
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}
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current_res = *head;
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while (current_res->next && current_res->next->next) {
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if (current_res->next->length < current_res->next->next->length) {
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out_of_order++;
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next_res = current_res->next;
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current_res->next = current_res->next->next;
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current_res = current_res->next;
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next_res->next = current_res->next;
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current_res->next = next_res;
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} else
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current_res = current_res->next;
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}
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} /* End of out_of_order loop */
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return(0);
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}
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/*
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* do_pre_bridge_resource_split
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*
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* Returns zero or one node of resources that aren't in use
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*
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*/
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static struct pci_resource *do_pre_bridge_resource_split (struct pci_resource **head, struct pci_resource **orig_head, u32 alignment)
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{
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struct pci_resource *prevnode = NULL;
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struct pci_resource *node;
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struct pci_resource *split_node;
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u32 rc;
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u32 temp_dword;
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dbg("do_pre_bridge_resource_split\n");
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if (!(*head) || !(*orig_head))
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return(NULL);
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rc = shpchp_resource_sort_and_combine(head);
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if (rc)
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return(NULL);
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if ((*head)->base != (*orig_head)->base)
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return(NULL);
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if ((*head)->length == (*orig_head)->length)
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return(NULL);
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/* If we got here, there the bridge requires some of the resource, but
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* we may be able to split some off of the front
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*/
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node = *head;
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if (node->length & (alignment -1)) {
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/* This one isn't an aligned length, so we'll make a new entry
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* and split it up.
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*/
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split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
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if (!split_node)
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return(NULL);
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temp_dword = (node->length | (alignment-1)) + 1 - alignment;
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split_node->base = node->base;
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split_node->length = temp_dword;
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node->length -= temp_dword;
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node->base += split_node->length;
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/* Put it in the list */
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*head = split_node;
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split_node->next = node;
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}
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if (node->length < alignment) {
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return(NULL);
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}
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/* Now unlink it */
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if (*head == node) {
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*head = node->next;
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node->next = NULL;
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} else {
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prevnode = *head;
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while (prevnode->next != node)
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prevnode = prevnode->next;
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prevnode->next = node->next;
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node->next = NULL;
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}
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return(node);
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}
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/*
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* do_bridge_resource_split
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*
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* Returns zero or one node of resources that aren't in use
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*
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*/
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static struct pci_resource *do_bridge_resource_split (struct pci_resource **head, u32 alignment)
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{
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struct pci_resource *prevnode = NULL;
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struct pci_resource *node;
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u32 rc;
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u32 temp_dword;
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if (!(*head))
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return(NULL);
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rc = shpchp_resource_sort_and_combine(head);
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if (rc)
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return(NULL);
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node = *head;
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while (node->next) {
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prevnode = node;
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node = node->next;
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kfree(prevnode);
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}
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if (node->length < alignment) {
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kfree(node);
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return(NULL);
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}
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if (node->base & (alignment - 1)) {
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/* Short circuit if adjusted size is too small */
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temp_dword = (node->base | (alignment-1)) + 1;
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if ((node->length - (temp_dword - node->base)) < alignment) {
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kfree(node);
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return(NULL);
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}
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node->length -= (temp_dword - node->base);
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node->base = temp_dword;
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}
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if (node->length & (alignment - 1)) {
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/* There's stuff in use after this node */
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kfree(node);
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return(NULL);
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}
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return(node);
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}
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/*
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* get_io_resource
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*
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* this function sorts the resource list by size and then
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* returns the first node of "size" length that is not in the
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* ISA aliasing window. If it finds a node larger than "size"
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* it will split it up.
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*
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* size must be a power of two.
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*/
|
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static struct pci_resource *get_io_resource (struct pci_resource **head, u32 size)
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{
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struct pci_resource *prevnode;
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struct pci_resource *node;
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struct pci_resource *split_node = NULL;
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u32 temp_dword;
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|
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if (!(*head))
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return(NULL);
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|
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if ( shpchp_resource_sort_and_combine(head) )
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return(NULL);
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|
|
if ( sort_by_size(head) )
|
|
return(NULL);
|
|
|
|
for (node = *head; node; node = node->next) {
|
|
if (node->length < size)
|
|
continue;
|
|
|
|
if (node->base & (size - 1)) {
|
|
/* This one isn't base aligned properly
|
|
so we'll make a new entry and split it up */
|
|
temp_dword = (node->base | (size-1)) + 1;
|
|
|
|
/*/ Short circuit if adjusted size is too small */
|
|
if ((node->length - (temp_dword - node->base)) < size)
|
|
continue;
|
|
|
|
split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
|
|
|
|
if (!split_node)
|
|
return(NULL);
|
|
|
|
split_node->base = node->base;
|
|
split_node->length = temp_dword - node->base;
|
|
node->base = temp_dword;
|
|
node->length -= split_node->length;
|
|
|
|
/* Put it in the list */
|
|
split_node->next = node->next;
|
|
node->next = split_node;
|
|
} /* End of non-aligned base */
|
|
|
|
/* Don't need to check if too small since we already did */
|
|
if (node->length > size) {
|
|
/* This one is longer than we need
|
|
so we'll make a new entry and split it up */
|
|
split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
|
|
|
|
if (!split_node)
|
|
return(NULL);
|
|
|
|
split_node->base = node->base + size;
|
|
split_node->length = node->length - size;
|
|
node->length = size;
|
|
|
|
/* Put it in the list */
|
|
split_node->next = node->next;
|
|
node->next = split_node;
|
|
} /* End of too big on top end */
|
|
|
|
/* For IO make sure it's not in the ISA aliasing space */
|
|
if (node->base & 0x300L)
|
|
continue;
|
|
|
|
/* If we got here, then it is the right size
|
|
Now take it out of the list */
|
|
if (*head == node) {
|
|
*head = node->next;
|
|
} else {
|
|
prevnode = *head;
|
|
while (prevnode->next != node)
|
|
prevnode = prevnode->next;
|
|
|
|
prevnode->next = node->next;
|
|
}
|
|
node->next = NULL;
|
|
/* Stop looping */
|
|
break;
|
|
}
|
|
|
|
return(node);
|
|
}
|
|
|
|
|
|
/*
|
|
* get_max_resource
|
|
*
|
|
* Gets the largest node that is at least "size" big from the
|
|
* list pointed to by head. It aligns the node on top and bottom
|
|
* to "size" alignment before returning it.
|
|
* J.I. modified to put max size limits of; 64M->32M->16M->8M->4M->1M
|
|
* This is needed to avoid allocating entire ACPI _CRS res to one child bridge/slot.
|
|
*/
|
|
static struct pci_resource *get_max_resource (struct pci_resource **head, u32 size)
|
|
{
|
|
struct pci_resource *max;
|
|
struct pci_resource *temp;
|
|
struct pci_resource *split_node;
|
|
u32 temp_dword;
|
|
u32 max_size[] = { 0x4000000, 0x2000000, 0x1000000, 0x0800000, 0x0400000, 0x0200000, 0x0100000, 0x00 };
|
|
int i;
|
|
|
|
if (!(*head))
|
|
return(NULL);
|
|
|
|
if (shpchp_resource_sort_and_combine(head))
|
|
return(NULL);
|
|
|
|
if (sort_by_max_size(head))
|
|
return(NULL);
|
|
|
|
for (max = *head;max; max = max->next) {
|
|
|
|
/* If not big enough we could probably just bail,
|
|
instead we'll continue to the next. */
|
|
if (max->length < size)
|
|
continue;
|
|
|
|
if (max->base & (size - 1)) {
|
|
/* This one isn't base aligned properly
|
|
so we'll make a new entry and split it up */
|
|
temp_dword = (max->base | (size-1)) + 1;
|
|
|
|
/* Short circuit if adjusted size is too small */
|
|
if ((max->length - (temp_dword - max->base)) < size)
|
|
continue;
|
|
|
|
split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
|
|
|
|
if (!split_node)
|
|
return(NULL);
|
|
|
|
split_node->base = max->base;
|
|
split_node->length = temp_dword - max->base;
|
|
max->base = temp_dword;
|
|
max->length -= split_node->length;
|
|
|
|
/* Put it next in the list */
|
|
split_node->next = max->next;
|
|
max->next = split_node;
|
|
}
|
|
|
|
if ((max->base + max->length) & (size - 1)) {
|
|
/* This one isn't end aligned properly at the top
|
|
so we'll make a new entry and split it up */
|
|
split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
|
|
|
|
if (!split_node)
|
|
return(NULL);
|
|
temp_dword = ((max->base + max->length) & ~(size - 1));
|
|
split_node->base = temp_dword;
|
|
split_node->length = max->length + max->base
|
|
- split_node->base;
|
|
max->length -= split_node->length;
|
|
|
|
/* Put it in the list */
|
|
split_node->next = max->next;
|
|
max->next = split_node;
|
|
}
|
|
|
|
/* Make sure it didn't shrink too much when we aligned it */
|
|
if (max->length < size)
|
|
continue;
|
|
|
|
for ( i = 0; max_size[i] > size; i++) {
|
|
if (max->length > max_size[i]) {
|
|
split_node = kmalloc(sizeof(*split_node),
|
|
GFP_KERNEL);
|
|
if (!split_node)
|
|
break; /* return (NULL); */
|
|
split_node->base = max->base + max_size[i];
|
|
split_node->length = max->length - max_size[i];
|
|
max->length = max_size[i];
|
|
/* Put it next in the list */
|
|
split_node->next = max->next;
|
|
max->next = split_node;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Now take it out of the list */
|
|
temp = (struct pci_resource*) *head;
|
|
if (temp == max) {
|
|
*head = max->next;
|
|
} else {
|
|
while (temp && temp->next != max) {
|
|
temp = temp->next;
|
|
}
|
|
|
|
temp->next = max->next;
|
|
}
|
|
|
|
max->next = NULL;
|
|
return(max);
|
|
}
|
|
|
|
/* If we get here, we couldn't find one */
|
|
return(NULL);
|
|
}
|
|
|
|
|
|
/*
|
|
* get_resource
|
|
*
|
|
* this function sorts the resource list by size and then
|
|
* returns the first node of "size" length. If it finds a node
|
|
* larger than "size" it will split it up.
|
|
*
|
|
* size must be a power of two.
|
|
*/
|
|
static struct pci_resource *get_resource (struct pci_resource **head, u32 size)
|
|
{
|
|
struct pci_resource *prevnode;
|
|
struct pci_resource *node;
|
|
struct pci_resource *split_node;
|
|
u32 temp_dword;
|
|
|
|
if (!(*head))
|
|
return(NULL);
|
|
|
|
if ( shpchp_resource_sort_and_combine(head) )
|
|
return(NULL);
|
|
|
|
if ( sort_by_size(head) )
|
|
return(NULL);
|
|
|
|
for (node = *head; node; node = node->next) {
|
|
dbg("%s: req_size =0x%x node=%p, base=0x%x, length=0x%x\n",
|
|
__FUNCTION__, size, node, node->base, node->length);
|
|
if (node->length < size)
|
|
continue;
|
|
|
|
if (node->base & (size - 1)) {
|
|
dbg("%s: not aligned\n", __FUNCTION__);
|
|
/* this one isn't base aligned properly
|
|
so we'll make a new entry and split it up */
|
|
temp_dword = (node->base | (size-1)) + 1;
|
|
|
|
/* Short circuit if adjusted size is too small */
|
|
if ((node->length - (temp_dword - node->base)) < size)
|
|
continue;
|
|
|
|
split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
|
|
|
|
if (!split_node)
|
|
return(NULL);
|
|
|
|
split_node->base = node->base;
|
|
split_node->length = temp_dword - node->base;
|
|
node->base = temp_dword;
|
|
node->length -= split_node->length;
|
|
|
|
/* Put it in the list */
|
|
split_node->next = node->next;
|
|
node->next = split_node;
|
|
} /* End of non-aligned base */
|
|
|
|
/* Don't need to check if too small since we already did */
|
|
if (node->length > size) {
|
|
dbg("%s: too big\n", __FUNCTION__);
|
|
/* this one is longer than we need
|
|
so we'll make a new entry and split it up */
|
|
split_node = kmalloc(sizeof(*split_node), GFP_KERNEL);
|
|
|
|
if (!split_node)
|
|
return(NULL);
|
|
|
|
split_node->base = node->base + size;
|
|
split_node->length = node->length - size;
|
|
node->length = size;
|
|
|
|
/* Put it in the list */
|
|
split_node->next = node->next;
|
|
node->next = split_node;
|
|
} /* End of too big on top end */
|
|
|
|
dbg("%s: got one!!!\n", __FUNCTION__);
|
|
/* If we got here, then it is the right size
|
|
Now take it out of the list */
|
|
if (*head == node) {
|
|
*head = node->next;
|
|
} else {
|
|
prevnode = *head;
|
|
while (prevnode->next != node)
|
|
prevnode = prevnode->next;
|
|
|
|
prevnode->next = node->next;
|
|
}
|
|
node->next = NULL;
|
|
/* Stop looping */
|
|
break;
|
|
}
|
|
return(node);
|
|
}
|
|
|
|
|
|
/*
|
|
* shpchp_resource_sort_and_combine
|
|
*
|
|
* Sorts all of the nodes in the list in ascending order by
|
|
* their base addresses. Also does garbage collection by
|
|
* combining adjacent nodes.
|
|
*
|
|
* returns 0 if success
|
|
*/
|
|
int shpchp_resource_sort_and_combine(struct pci_resource **head)
|
|
{
|
|
struct pci_resource *node1;
|
|
struct pci_resource *node2;
|
|
int out_of_order = 1;
|
|
|
|
dbg("%s: head = %p, *head = %p\n", __FUNCTION__, head, *head);
|
|
|
|
if (!(*head))
|
|
return(1);
|
|
|
|
dbg("*head->next = %p\n",(*head)->next);
|
|
|
|
if (!(*head)->next)
|
|
return(0); /* only one item on the list, already sorted! */
|
|
|
|
dbg("*head->base = 0x%x\n",(*head)->base);
|
|
dbg("*head->next->base = 0x%x\n",(*head)->next->base);
|
|
while (out_of_order) {
|
|
out_of_order = 0;
|
|
|
|
/* Special case for swapping list head */
|
|
if (((*head)->next) &&
|
|
((*head)->base > (*head)->next->base)) {
|
|
node1 = *head;
|
|
(*head) = (*head)->next;
|
|
node1->next = (*head)->next;
|
|
(*head)->next = node1;
|
|
out_of_order++;
|
|
}
|
|
|
|
node1 = (*head);
|
|
|
|
while (node1->next && node1->next->next) {
|
|
if (node1->next->base > node1->next->next->base) {
|
|
out_of_order++;
|
|
node2 = node1->next;
|
|
node1->next = node1->next->next;
|
|
node1 = node1->next;
|
|
node2->next = node1->next;
|
|
node1->next = node2;
|
|
} else
|
|
node1 = node1->next;
|
|
}
|
|
} /* End of out_of_order loop */
|
|
|
|
node1 = *head;
|
|
|
|
while (node1 && node1->next) {
|
|
if ((node1->base + node1->length) == node1->next->base) {
|
|
/* Combine */
|
|
dbg("8..\n");
|
|
node1->length += node1->next->length;
|
|
node2 = node1->next;
|
|
node1->next = node1->next->next;
|
|
kfree(node2);
|
|
} else
|
|
node1 = node1->next;
|
|
}
|
|
|
|
return(0);
|
|
}
|
|
|
|
|
|
/**
|
|
* shpchp_slot_create - Creates a node and adds it to the proper bus.
|
|
* @busnumber - bus where new node is to be located
|
|
*
|
|
* Returns pointer to the new node or NULL if unsuccessful
|
|
*/
|
|
struct pci_func *shpchp_slot_create(u8 busnumber)
|
|
{
|
|
struct pci_func *new_slot;
|
|
struct pci_func *next;
|
|
|
|
new_slot = kmalloc(sizeof(*new_slot), GFP_KERNEL);
|
|
|
|
if (new_slot == NULL) {
|
|
return(new_slot);
|
|
}
|
|
|
|
memset(new_slot, 0, sizeof(struct pci_func));
|
|
|
|
new_slot->next = NULL;
|
|
new_slot->configured = 1;
|
|
|
|
if (shpchp_slot_list[busnumber] == NULL) {
|
|
shpchp_slot_list[busnumber] = new_slot;
|
|
} else {
|
|
next = shpchp_slot_list[busnumber];
|
|
while (next->next != NULL)
|
|
next = next->next;
|
|
next->next = new_slot;
|
|
}
|
|
return(new_slot);
|
|
}
|
|
|
|
|
|
/*
|
|
* slot_remove - Removes a node from the linked list of slots.
|
|
* @old_slot: slot to remove
|
|
*
|
|
* Returns 0 if successful, !0 otherwise.
|
|
*/
|
|
static int slot_remove(struct pci_func * old_slot)
|
|
{
|
|
struct pci_func *next;
|
|
|
|
if (old_slot == NULL)
|
|
return(1);
|
|
|
|
next = shpchp_slot_list[old_slot->bus];
|
|
|
|
if (next == NULL) {
|
|
return(1);
|
|
}
|
|
|
|
if (next == old_slot) {
|
|
shpchp_slot_list[old_slot->bus] = old_slot->next;
|
|
shpchp_destroy_board_resources(old_slot);
|
|
kfree(old_slot);
|
|
return(0);
|
|
}
|
|
|
|
while ((next->next != old_slot) && (next->next != NULL)) {
|
|
next = next->next;
|
|
}
|
|
|
|
if (next->next == old_slot) {
|
|
next->next = old_slot->next;
|
|
shpchp_destroy_board_resources(old_slot);
|
|
kfree(old_slot);
|
|
return(0);
|
|
} else
|
|
return(2);
|
|
}
|
|
|
|
|
|
/**
|
|
* bridge_slot_remove - Removes a node from the linked list of slots.
|
|
* @bridge: bridge to remove
|
|
*
|
|
* Returns 0 if successful, !0 otherwise.
|
|
*/
|
|
static int bridge_slot_remove(struct pci_func *bridge)
|
|
{
|
|
u8 subordinateBus, secondaryBus;
|
|
u8 tempBus;
|
|
struct pci_func *next;
|
|
|
|
if (bridge == NULL)
|
|
return(1);
|
|
|
|
secondaryBus = (bridge->config_space[0x06] >> 8) & 0xFF;
|
|
subordinateBus = (bridge->config_space[0x06] >> 16) & 0xFF;
|
|
|
|
for (tempBus = secondaryBus; tempBus <= subordinateBus; tempBus++) {
|
|
next = shpchp_slot_list[tempBus];
|
|
|
|
while (!slot_remove(next)) {
|
|
next = shpchp_slot_list[tempBus];
|
|
}
|
|
}
|
|
|
|
next = shpchp_slot_list[bridge->bus];
|
|
|
|
if (next == NULL) {
|
|
return(1);
|
|
}
|
|
|
|
if (next == bridge) {
|
|
shpchp_slot_list[bridge->bus] = bridge->next;
|
|
kfree(bridge);
|
|
return(0);
|
|
}
|
|
|
|
while ((next->next != bridge) && (next->next != NULL)) {
|
|
next = next->next;
|
|
}
|
|
|
|
if (next->next == bridge) {
|
|
next->next = bridge->next;
|
|
kfree(bridge);
|
|
return(0);
|
|
} else
|
|
return(2);
|
|
}
|
|
|
|
|
|
/**
|
|
* shpchp_slot_find - Looks for a node by bus, and device, multiple functions accessed
|
|
* @bus: bus to find
|
|
* @device: device to find
|
|
* @index: is 0 for first function found, 1 for the second...
|
|
*
|
|
* Returns pointer to the node if successful, %NULL otherwise.
|
|
*/
|
|
struct pci_func *shpchp_slot_find(u8 bus, u8 device, u8 index)
|
|
{
|
|
int found = -1;
|
|
struct pci_func *func;
|
|
|
|
func = shpchp_slot_list[bus];
|
|
|
|
if ((func == NULL) || ((func->device == device) && (index == 0)))
|
|
return(func);
|
|
|
|
if (func->device == device)
|
|
found++;
|
|
|
|
while (func->next != NULL) {
|
|
func = func->next;
|
|
|
|
if (func->device == device)
|
|
found++;
|
|
|
|
if (found == index)
|
|
return(func);
|
|
}
|
|
|
|
return(NULL);
|
|
}
|
|
|
|
static int is_bridge(struct pci_func * func)
|
|
{
|
|
/* Check the header type */
|
|
if (((func->config_space[0x03] >> 16) & 0xFF) == 0x01)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* The following routines constitute the bulk of the
|
|
hotplug controller logic
|
|
*/
|
|
static u32 change_bus_speed(struct controller *ctrl, struct slot *p_slot, enum pci_bus_speed speed)
|
|
{
|
|
u32 rc = 0;
|
|
|
|
dbg("%s: change to speed %d\n", __FUNCTION__, speed);
|
|
down(&ctrl->crit_sect);
|
|
if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, speed))) {
|
|
err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__);
|
|
up(&ctrl->crit_sect);
|
|
return WRONG_BUS_FREQUENCY;
|
|
}
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
|
|
err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n",
|
|
__FUNCTION__);
|
|
err("%s: Error code (%d)\n", __FUNCTION__, rc);
|
|
up(&ctrl->crit_sect);
|
|
return WRONG_BUS_FREQUENCY;
|
|
}
|
|
up(&ctrl->crit_sect);
|
|
return rc;
|
|
}
|
|
|
|
static u32 fix_bus_speed(struct controller *ctrl, struct slot *pslot, u8 flag,
|
|
enum pci_bus_speed asp, enum pci_bus_speed bsp, enum pci_bus_speed msp)
|
|
{
|
|
u32 rc = 0;
|
|
|
|
if (flag != 0) { /* Other slots on the same bus are occupied */
|
|
if ( asp < bsp ) {
|
|
err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bsp, asp);
|
|
return WRONG_BUS_FREQUENCY;
|
|
}
|
|
} else {
|
|
/* Other slots on the same bus are empty */
|
|
if (msp == bsp) {
|
|
/* if adapter_speed >= bus_speed, do nothing */
|
|
if (asp < bsp) {
|
|
/*
|
|
* Try to lower bus speed to accommodate the adapter if other slots
|
|
* on the same controller are empty
|
|
*/
|
|
if ((rc = change_bus_speed(ctrl, pslot, asp)))
|
|
return rc;
|
|
}
|
|
} else {
|
|
if (asp < msp) {
|
|
if ((rc = change_bus_speed(ctrl, pslot, asp)))
|
|
return rc;
|
|
} else {
|
|
if ((rc = change_bus_speed(ctrl, pslot, msp)))
|
|
return rc;
|
|
}
|
|
}
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
/**
|
|
* board_added - Called after a board has been added to the system.
|
|
*
|
|
* Turns power on for the board
|
|
* Configures board
|
|
*
|
|
*/
|
|
static u32 board_added(struct pci_func * func, struct controller * ctrl)
|
|
{
|
|
u8 hp_slot;
|
|
u8 slots_not_empty = 0;
|
|
int index;
|
|
u32 temp_register = 0xFFFFFFFF;
|
|
u32 retval, rc = 0;
|
|
struct pci_func *new_func = NULL;
|
|
struct slot *p_slot;
|
|
struct resource_lists res_lists;
|
|
enum pci_bus_speed adapter_speed, bus_speed, max_bus_speed;
|
|
u8 pi, mode;
|
|
|
|
p_slot = shpchp_find_slot(ctrl, func->device);
|
|
hp_slot = func->device - ctrl->slot_device_offset;
|
|
|
|
dbg("%s: func->device, slot_offset, hp_slot = %d, %d ,%d\n", __FUNCTION__, func->device, ctrl->slot_device_offset, hp_slot);
|
|
|
|
/* Wait for exclusive access to hardware */
|
|
down(&ctrl->crit_sect);
|
|
|
|
/* Power on slot without connecting to bus */
|
|
rc = p_slot->hpc_ops->power_on_slot(p_slot);
|
|
if (rc) {
|
|
err("%s: Failed to power on slot\n", __FUNCTION__);
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
return -1;
|
|
}
|
|
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
rc = p_slot->hpc_ops->check_cmd_status(ctrl);
|
|
if (rc) {
|
|
err("%s: Failed to power on slot, error code(%d)\n", __FUNCTION__, rc);
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
return -1;
|
|
}
|
|
|
|
|
|
if ((ctrl->pci_dev->vendor == 0x8086) && (ctrl->pci_dev->device == 0x0332)) {
|
|
if (slots_not_empty)
|
|
return WRONG_BUS_FREQUENCY;
|
|
|
|
if ((rc = p_slot->hpc_ops->set_bus_speed_mode(p_slot, PCI_SPEED_33MHz))) {
|
|
err("%s: Issue of set bus speed mode command failed\n", __FUNCTION__);
|
|
up(&ctrl->crit_sect);
|
|
return WRONG_BUS_FREQUENCY;
|
|
}
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
|
|
err("%s: Can't set bus speed/mode in the case of adapter & bus mismatch\n",
|
|
__FUNCTION__);
|
|
err("%s: Error code (%d)\n", __FUNCTION__, rc);
|
|
up(&ctrl->crit_sect);
|
|
return WRONG_BUS_FREQUENCY;
|
|
}
|
|
/* turn on board, blink green LED, turn off Amber LED */
|
|
if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) {
|
|
err("%s: Issue of Slot Enable command failed\n", __FUNCTION__);
|
|
up(&ctrl->crit_sect);
|
|
return rc;
|
|
}
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
|
|
err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__, rc);
|
|
up(&ctrl->crit_sect);
|
|
return rc;
|
|
}
|
|
}
|
|
|
|
rc = p_slot->hpc_ops->get_adapter_speed(p_slot, &adapter_speed);
|
|
/* 0 = PCI 33Mhz, 1 = PCI 66 Mhz, 2 = PCI-X 66 PA, 4 = PCI-X 66 ECC, */
|
|
/* 5 = PCI-X 133 PA, 7 = PCI-X 133 ECC, 0xa = PCI-X 133 Mhz 266, */
|
|
/* 0xd = PCI-X 133 Mhz 533 */
|
|
/* This encoding is different from the one used in cur_bus_speed & */
|
|
/* max_bus_speed */
|
|
|
|
if (rc || adapter_speed == PCI_SPEED_UNKNOWN) {
|
|
err("%s: Can't get adapter speed or bus mode mismatch\n", __FUNCTION__);
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
return WRONG_BUS_FREQUENCY;
|
|
}
|
|
|
|
rc = p_slot->hpc_ops->get_cur_bus_speed(p_slot, &bus_speed);
|
|
if (rc || bus_speed == PCI_SPEED_UNKNOWN) {
|
|
err("%s: Can't get bus operation speed\n", __FUNCTION__);
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
return WRONG_BUS_FREQUENCY;
|
|
}
|
|
|
|
rc = p_slot->hpc_ops->get_max_bus_speed(p_slot, &max_bus_speed);
|
|
if (rc || max_bus_speed == PCI_SPEED_UNKNOWN) {
|
|
err("%s: Can't get max bus operation speed\n", __FUNCTION__);
|
|
max_bus_speed = bus_speed;
|
|
}
|
|
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
|
|
if ((rc = p_slot->hpc_ops->get_prog_int(p_slot, &pi))) {
|
|
err("%s: Can't get controller programming interface, set it to 1\n", __FUNCTION__);
|
|
pi = 1;
|
|
}
|
|
|
|
/* Check if there are other slots or devices on the same bus */
|
|
if (!list_empty(&ctrl->pci_dev->subordinate->devices))
|
|
slots_not_empty = 1;
|
|
|
|
dbg("%s: slots_not_empty %d, pi %d\n", __FUNCTION__,
|
|
slots_not_empty, pi);
|
|
dbg("adapter_speed %d, bus_speed %d, max_bus_speed %d\n",
|
|
adapter_speed, bus_speed, max_bus_speed);
|
|
|
|
if (pi == 2) {
|
|
dbg("%s: In PI = %d\n", __FUNCTION__, pi);
|
|
if ((rc = p_slot->hpc_ops->get_mode1_ECC_cap(p_slot, &mode))) {
|
|
err("%s: Can't get Mode1_ECC, set mode to 0\n", __FUNCTION__);
|
|
mode = 0;
|
|
}
|
|
|
|
switch (adapter_speed) {
|
|
case PCI_SPEED_133MHz_PCIX_533:
|
|
case PCI_SPEED_133MHz_PCIX_266:
|
|
if ((bus_speed != adapter_speed) &&
|
|
((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed))))
|
|
return rc;
|
|
break;
|
|
case PCI_SPEED_133MHz_PCIX_ECC:
|
|
case PCI_SPEED_133MHz_PCIX:
|
|
if (mode) { /* Bus - Mode 1 ECC */
|
|
if ((bus_speed != 0x7) &&
|
|
((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed))))
|
|
return rc;
|
|
} else {
|
|
if ((bus_speed != 0x4) &&
|
|
((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed))))
|
|
return rc;
|
|
}
|
|
break;
|
|
case PCI_SPEED_66MHz_PCIX_ECC:
|
|
case PCI_SPEED_66MHz_PCIX:
|
|
if (mode) { /* Bus - Mode 1 ECC */
|
|
if ((bus_speed != 0x5) &&
|
|
((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed))))
|
|
return rc;
|
|
} else {
|
|
if ((bus_speed != 0x2) &&
|
|
((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed))))
|
|
return rc;
|
|
}
|
|
break;
|
|
case PCI_SPEED_66MHz:
|
|
if ((bus_speed != 0x1) &&
|
|
((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed))))
|
|
return rc;
|
|
break;
|
|
case PCI_SPEED_33MHz:
|
|
if (bus_speed > 0x0) {
|
|
if (slots_not_empty == 0) {
|
|
if ((rc = change_bus_speed(ctrl, p_slot, adapter_speed)))
|
|
return rc;
|
|
} else {
|
|
err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bus_speed, adapter_speed);
|
|
return WRONG_BUS_FREQUENCY;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
err("%s: speed of bus %x and adapter %x mismatch\n", __FUNCTION__, bus_speed, adapter_speed);
|
|
return WRONG_BUS_FREQUENCY;
|
|
}
|
|
} else {
|
|
/* If adpater_speed == bus_speed, nothing to do here */
|
|
dbg("%s: In PI = %d\n", __FUNCTION__, pi);
|
|
if ((adapter_speed != bus_speed) &&
|
|
((rc = fix_bus_speed(ctrl, p_slot, slots_not_empty, adapter_speed, bus_speed, max_bus_speed))))
|
|
return rc;
|
|
}
|
|
|
|
down(&ctrl->crit_sect);
|
|
/* turn on board, blink green LED, turn off Amber LED */
|
|
if ((rc = p_slot->hpc_ops->slot_enable(p_slot))) {
|
|
err("%s: Issue of Slot Enable command failed\n", __FUNCTION__);
|
|
up(&ctrl->crit_sect);
|
|
return rc;
|
|
}
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
if ((rc = p_slot->hpc_ops->check_cmd_status(ctrl))) {
|
|
err("%s: Failed to enable slot, error code(%d)\n", __FUNCTION__, rc);
|
|
up(&ctrl->crit_sect);
|
|
return rc;
|
|
}
|
|
|
|
up(&ctrl->crit_sect);
|
|
|
|
/* Wait for ~1 second */
|
|
dbg("%s: before long_delay\n", __FUNCTION__);
|
|
wait_for_ctrl_irq (ctrl);
|
|
dbg("%s: after long_delay\n", __FUNCTION__);
|
|
|
|
dbg("%s: func status = %x\n", __FUNCTION__, func->status);
|
|
/* Check for a power fault */
|
|
if (func->status == 0xFF) {
|
|
/* power fault occurred, but it was benign */
|
|
temp_register = 0xFFFFFFFF;
|
|
dbg("%s: temp register set to %x by power fault\n", __FUNCTION__, temp_register);
|
|
rc = POWER_FAILURE;
|
|
func->status = 0;
|
|
} else {
|
|
/* Get vendor/device ID u32 */
|
|
rc = pci_bus_read_config_dword (ctrl->pci_dev->subordinate, PCI_DEVFN(func->device, func->function),
|
|
PCI_VENDOR_ID, &temp_register);
|
|
dbg("%s: pci_bus_read_config_dword returns %d\n", __FUNCTION__, rc);
|
|
dbg("%s: temp_register is %x\n", __FUNCTION__, temp_register);
|
|
|
|
if (rc != 0) {
|
|
/* Something's wrong here */
|
|
temp_register = 0xFFFFFFFF;
|
|
dbg("%s: temp register set to %x by error\n", __FUNCTION__, temp_register);
|
|
}
|
|
/* Preset return code. It will be changed later if things go okay. */
|
|
rc = NO_ADAPTER_PRESENT;
|
|
}
|
|
|
|
/* All F's is an empty slot or an invalid board */
|
|
if (temp_register != 0xFFFFFFFF) { /* Check for a board in the slot */
|
|
res_lists.io_head = ctrl->io_head;
|
|
res_lists.mem_head = ctrl->mem_head;
|
|
res_lists.p_mem_head = ctrl->p_mem_head;
|
|
res_lists.bus_head = ctrl->bus_head;
|
|
res_lists.irqs = NULL;
|
|
|
|
rc = configure_new_device(ctrl, func, 0, &res_lists, 0, 0);
|
|
dbg("%s: back from configure_new_device\n", __FUNCTION__);
|
|
|
|
ctrl->io_head = res_lists.io_head;
|
|
ctrl->mem_head = res_lists.mem_head;
|
|
ctrl->p_mem_head = res_lists.p_mem_head;
|
|
ctrl->bus_head = res_lists.bus_head;
|
|
|
|
shpchp_resource_sort_and_combine(&(ctrl->mem_head));
|
|
shpchp_resource_sort_and_combine(&(ctrl->p_mem_head));
|
|
shpchp_resource_sort_and_combine(&(ctrl->io_head));
|
|
shpchp_resource_sort_and_combine(&(ctrl->bus_head));
|
|
|
|
if (rc) {
|
|
/* Wait for exclusive access to hardware */
|
|
down(&ctrl->crit_sect);
|
|
|
|
/* turn off slot, turn on Amber LED, turn off Green LED */
|
|
retval = p_slot->hpc_ops->slot_disable(p_slot);
|
|
if (retval) {
|
|
err("%s: Issue of Slot Enable command failed\n", __FUNCTION__);
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
return retval;
|
|
}
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
retval = p_slot->hpc_ops->check_cmd_status(ctrl);
|
|
if (retval) {
|
|
err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__, retval);
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
return retval;
|
|
}
|
|
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
|
|
return(rc);
|
|
}
|
|
shpchp_save_slot_config(ctrl, func);
|
|
|
|
func->status = 0;
|
|
func->switch_save = 0x10;
|
|
func->is_a_board = 0x01;
|
|
func->pwr_save = 1;
|
|
|
|
/* Next, we will instantiate the linux pci_dev structures
|
|
* (with appropriate driver notification, if already present)
|
|
*/
|
|
index = 0;
|
|
do {
|
|
new_func = shpchp_slot_find(ctrl->slot_bus, func->device, index++);
|
|
if (new_func && !new_func->pci_dev) {
|
|
dbg("%s:call pci_hp_configure_dev\n", __FUNCTION__);
|
|
shpchp_configure_device(ctrl, new_func);
|
|
}
|
|
} while (new_func);
|
|
|
|
/* Wait for exclusive access to hardware */
|
|
down(&ctrl->crit_sect);
|
|
|
|
p_slot->hpc_ops->green_led_on(p_slot);
|
|
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
|
|
} else {
|
|
/* Wait for exclusive access to hardware */
|
|
down(&ctrl->crit_sect);
|
|
|
|
/* turn off slot, turn on Amber LED, turn off Green LED */
|
|
rc = p_slot->hpc_ops->slot_disable(p_slot);
|
|
if (rc) {
|
|
err("%s: Issue of Slot Disable command failed\n", __FUNCTION__);
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
return rc;
|
|
}
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
rc = p_slot->hpc_ops->check_cmd_status(ctrl);
|
|
if (rc) {
|
|
err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__, rc);
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
return rc;
|
|
}
|
|
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
|
|
return(rc);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* remove_board - Turns off slot and LED's
|
|
*
|
|
*/
|
|
static u32 remove_board(struct pci_func *func, struct controller *ctrl)
|
|
{
|
|
int index;
|
|
u8 skip = 0;
|
|
u8 device;
|
|
u8 hp_slot;
|
|
u32 rc;
|
|
struct resource_lists res_lists;
|
|
struct pci_func *temp_func;
|
|
struct slot *p_slot;
|
|
|
|
if (func == NULL)
|
|
return(1);
|
|
|
|
if (shpchp_unconfigure_device(func))
|
|
return(1);
|
|
|
|
device = func->device;
|
|
|
|
hp_slot = func->device - ctrl->slot_device_offset;
|
|
p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
|
|
|
|
dbg("In %s, hp_slot = %d\n", __FUNCTION__, hp_slot);
|
|
|
|
if ((ctrl->add_support) &&
|
|
!(func->bus_head || func->mem_head || func->p_mem_head || func->io_head)) {
|
|
/* Here we check to see if we've saved any of the board's
|
|
* resources already. If so, we'll skip the attempt to
|
|
* determine what's being used.
|
|
*/
|
|
index = 0;
|
|
|
|
temp_func = func;
|
|
|
|
while ((temp_func = shpchp_slot_find(temp_func->bus, temp_func->device, index++))) {
|
|
if (temp_func->bus_head || temp_func->mem_head
|
|
|| temp_func->p_mem_head || temp_func->io_head) {
|
|
skip = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!skip)
|
|
rc = shpchp_save_used_resources(ctrl, func, DISABLE_CARD);
|
|
}
|
|
/* Change status to shutdown */
|
|
if (func->is_a_board)
|
|
func->status = 0x01;
|
|
func->configured = 0;
|
|
|
|
/* Wait for exclusive access to hardware */
|
|
down(&ctrl->crit_sect);
|
|
|
|
/* turn off slot, turn on Amber LED, turn off Green LED */
|
|
rc = p_slot->hpc_ops->slot_disable(p_slot);
|
|
if (rc) {
|
|
err("%s: Issue of Slot Disable command failed\n", __FUNCTION__);
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
return rc;
|
|
}
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
rc = p_slot->hpc_ops->check_cmd_status(ctrl);
|
|
if (rc) {
|
|
err("%s: Failed to disable slot, error code(%d)\n", __FUNCTION__, rc);
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
return rc;
|
|
}
|
|
|
|
rc = p_slot->hpc_ops->set_attention_status(p_slot, 0);
|
|
if (rc) {
|
|
err("%s: Issue of Set Attention command failed\n", __FUNCTION__);
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
return rc;
|
|
}
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
|
|
if (ctrl->add_support) {
|
|
while (func) {
|
|
res_lists.io_head = ctrl->io_head;
|
|
res_lists.mem_head = ctrl->mem_head;
|
|
res_lists.p_mem_head = ctrl->p_mem_head;
|
|
res_lists.bus_head = ctrl->bus_head;
|
|
|
|
dbg("Returning resources to ctlr lists for (B/D/F) = (%#x/%#x/%#x)\n", func->bus,
|
|
func->device, func->function);
|
|
|
|
shpchp_return_board_resources(func, &res_lists);
|
|
|
|
ctrl->io_head = res_lists.io_head;
|
|
ctrl->mem_head = res_lists.mem_head;
|
|
ctrl->p_mem_head = res_lists.p_mem_head;
|
|
ctrl->bus_head = res_lists.bus_head;
|
|
|
|
shpchp_resource_sort_and_combine(&(ctrl->mem_head));
|
|
shpchp_resource_sort_and_combine(&(ctrl->p_mem_head));
|
|
shpchp_resource_sort_and_combine(&(ctrl->io_head));
|
|
shpchp_resource_sort_and_combine(&(ctrl->bus_head));
|
|
|
|
if (is_bridge(func)) {
|
|
dbg("PCI Bridge Hot-Remove s:b:d:f(%02x:%02x:%02x:%02x)\n", ctrl->seg, func->bus,
|
|
func->device, func->function);
|
|
bridge_slot_remove(func);
|
|
} else
|
|
dbg("PCI Function Hot-Remove s:b:d:f(%02x:%02x:%02x:%02x)\n", ctrl->seg, func->bus,
|
|
func->device, func->function);
|
|
slot_remove(func);
|
|
|
|
func = shpchp_slot_find(ctrl->slot_bus, device, 0);
|
|
}
|
|
|
|
/* Setup slot structure with entry for empty slot */
|
|
func = shpchp_slot_create(ctrl->slot_bus);
|
|
|
|
if (func == NULL) {
|
|
return(1);
|
|
}
|
|
|
|
func->bus = ctrl->slot_bus;
|
|
func->device = device;
|
|
func->function = 0;
|
|
func->configured = 0;
|
|
func->switch_save = 0x10;
|
|
func->pwr_save = 0;
|
|
func->is_a_board = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void pushbutton_helper_thread (unsigned long data)
|
|
{
|
|
pushbutton_pending = data;
|
|
|
|
up(&event_semaphore);
|
|
}
|
|
|
|
|
|
/**
|
|
* shpchp_pushbutton_thread
|
|
*
|
|
* Scheduled procedure to handle blocking stuff for the pushbuttons
|
|
* Handles all pending events and exits.
|
|
*
|
|
*/
|
|
static void shpchp_pushbutton_thread (unsigned long slot)
|
|
{
|
|
struct slot *p_slot = (struct slot *) slot;
|
|
u8 getstatus;
|
|
|
|
pushbutton_pending = 0;
|
|
|
|
if (!p_slot) {
|
|
dbg("%s: Error! slot NULL\n", __FUNCTION__);
|
|
return;
|
|
}
|
|
|
|
p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
|
|
if (getstatus) {
|
|
p_slot->state = POWEROFF_STATE;
|
|
dbg("In power_down_board, b:d(%x:%x)\n", p_slot->bus, p_slot->device);
|
|
|
|
shpchp_disable_slot(p_slot);
|
|
p_slot->state = STATIC_STATE;
|
|
} else {
|
|
p_slot->state = POWERON_STATE;
|
|
dbg("In add_board, b:d(%x:%x)\n", p_slot->bus, p_slot->device);
|
|
|
|
if (shpchp_enable_slot(p_slot)) {
|
|
/* Wait for exclusive access to hardware */
|
|
down(&p_slot->ctrl->crit_sect);
|
|
|
|
p_slot->hpc_ops->green_led_off(p_slot);
|
|
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (p_slot->ctrl);
|
|
|
|
/* Done with exclusive hardware access */
|
|
up(&p_slot->ctrl->crit_sect);
|
|
}
|
|
p_slot->state = STATIC_STATE;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/* this is the main worker thread */
|
|
static int event_thread(void* data)
|
|
{
|
|
struct controller *ctrl;
|
|
lock_kernel();
|
|
daemonize("shpchpd_event");
|
|
unlock_kernel();
|
|
|
|
while (1) {
|
|
dbg("!!!!event_thread sleeping\n");
|
|
down_interruptible (&event_semaphore);
|
|
dbg("event_thread woken finished = %d\n", event_finished);
|
|
if (event_finished || signal_pending(current))
|
|
break;
|
|
/* Do stuff here */
|
|
if (pushbutton_pending)
|
|
shpchp_pushbutton_thread(pushbutton_pending);
|
|
else
|
|
for (ctrl = shpchp_ctrl_list; ctrl; ctrl=ctrl->next)
|
|
interrupt_event_handler(ctrl);
|
|
}
|
|
dbg("event_thread signals exit\n");
|
|
up(&event_exit);
|
|
return 0;
|
|
}
|
|
|
|
int shpchp_event_start_thread (void)
|
|
{
|
|
int pid;
|
|
|
|
/* initialize our semaphores */
|
|
init_MUTEX_LOCKED(&event_exit);
|
|
event_finished=0;
|
|
|
|
init_MUTEX_LOCKED(&event_semaphore);
|
|
pid = kernel_thread(event_thread, NULL, 0);
|
|
|
|
if (pid < 0) {
|
|
err ("Can't start up our event thread\n");
|
|
return -1;
|
|
}
|
|
dbg("Our event thread pid = %d\n", pid);
|
|
return 0;
|
|
}
|
|
|
|
|
|
void shpchp_event_stop_thread (void)
|
|
{
|
|
event_finished = 1;
|
|
dbg("event_thread finish command given\n");
|
|
up(&event_semaphore);
|
|
dbg("wait for event_thread to exit\n");
|
|
down(&event_exit);
|
|
}
|
|
|
|
|
|
static int update_slot_info (struct slot *slot)
|
|
{
|
|
struct hotplug_slot_info *info;
|
|
int result;
|
|
|
|
info = kmalloc(sizeof(*info), GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
slot->hpc_ops->get_power_status(slot, &(info->power_status));
|
|
slot->hpc_ops->get_attention_status(slot, &(info->attention_status));
|
|
slot->hpc_ops->get_latch_status(slot, &(info->latch_status));
|
|
slot->hpc_ops->get_adapter_status(slot, &(info->adapter_status));
|
|
|
|
result = pci_hp_change_slot_info(slot->hotplug_slot, info);
|
|
kfree (info);
|
|
return result;
|
|
}
|
|
|
|
static void interrupt_event_handler(struct controller *ctrl)
|
|
{
|
|
int loop = 0;
|
|
int change = 1;
|
|
struct pci_func *func;
|
|
u8 hp_slot;
|
|
u8 getstatus;
|
|
struct slot *p_slot;
|
|
|
|
dbg("%s:\n", __FUNCTION__);
|
|
while (change) {
|
|
change = 0;
|
|
|
|
for (loop = 0; loop < 10; loop++) {
|
|
if (ctrl->event_queue[loop].event_type != 0) {
|
|
dbg("%s:loop %x event_type %x\n", __FUNCTION__, loop,
|
|
ctrl->event_queue[loop].event_type);
|
|
hp_slot = ctrl->event_queue[loop].hp_slot;
|
|
|
|
func = shpchp_slot_find(ctrl->slot_bus, (hp_slot + ctrl->slot_device_offset), 0);
|
|
|
|
p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
|
|
|
|
dbg("%s: hp_slot %d, func %p, p_slot %p\n", __FUNCTION__, hp_slot, func, p_slot);
|
|
|
|
if (ctrl->event_queue[loop].event_type == INT_BUTTON_CANCEL) {
|
|
dbg("%s: button cancel\n", __FUNCTION__);
|
|
del_timer(&p_slot->task_event);
|
|
|
|
switch (p_slot->state) {
|
|
case BLINKINGOFF_STATE:
|
|
/* Wait for exclusive access to hardware */
|
|
down(&ctrl->crit_sect);
|
|
|
|
p_slot->hpc_ops->green_led_on(p_slot);
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
p_slot->hpc_ops->set_attention_status(p_slot, 0);
|
|
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
break;
|
|
case BLINKINGON_STATE:
|
|
/* Wait for exclusive access to hardware */
|
|
down(&ctrl->crit_sect);
|
|
|
|
p_slot->hpc_ops->green_led_off(p_slot);
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
p_slot->hpc_ops->set_attention_status(p_slot, 0);
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
|
|
break;
|
|
default:
|
|
warn("Not a valid state\n");
|
|
return;
|
|
}
|
|
info(msg_button_cancel, p_slot->number);
|
|
p_slot->state = STATIC_STATE;
|
|
} else if (ctrl->event_queue[loop].event_type == INT_BUTTON_PRESS) {
|
|
/* Button Pressed (No action on 1st press...) */
|
|
dbg("%s: Button pressed\n", __FUNCTION__);
|
|
|
|
p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
|
|
if (getstatus) {
|
|
/* slot is on */
|
|
dbg("%s: slot is on\n", __FUNCTION__);
|
|
p_slot->state = BLINKINGOFF_STATE;
|
|
info(msg_button_off, p_slot->number);
|
|
} else {
|
|
/* slot is off */
|
|
dbg("%s: slot is off\n", __FUNCTION__);
|
|
p_slot->state = BLINKINGON_STATE;
|
|
info(msg_button_on, p_slot->number);
|
|
}
|
|
|
|
/* Wait for exclusive access to hardware */
|
|
down(&ctrl->crit_sect);
|
|
|
|
/* blink green LED and turn off amber */
|
|
p_slot->hpc_ops->green_led_blink(p_slot);
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
p_slot->hpc_ops->set_attention_status(p_slot, 0);
|
|
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
|
|
init_timer(&p_slot->task_event);
|
|
p_slot->task_event.expires = jiffies + 5 * HZ; /* 5 second delay */
|
|
p_slot->task_event.function = (void (*)(unsigned long)) pushbutton_helper_thread;
|
|
p_slot->task_event.data = (unsigned long) p_slot;
|
|
|
|
dbg("%s: add_timer p_slot = %p\n", __FUNCTION__,(void *) p_slot);
|
|
add_timer(&p_slot->task_event);
|
|
} else if (ctrl->event_queue[loop].event_type == INT_POWER_FAULT) {
|
|
/***********POWER FAULT********************/
|
|
dbg("%s: power fault\n", __FUNCTION__);
|
|
/* Wait for exclusive access to hardware */
|
|
down(&ctrl->crit_sect);
|
|
|
|
p_slot->hpc_ops->set_attention_status(p_slot, 1);
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
p_slot->hpc_ops->green_led_off(p_slot);
|
|
/* Wait for the command to complete */
|
|
wait_for_ctrl_irq (ctrl);
|
|
|
|
/* Done with exclusive hardware access */
|
|
up(&ctrl->crit_sect);
|
|
} else {
|
|
/* refresh notification */
|
|
if (p_slot)
|
|
update_slot_info(p_slot);
|
|
}
|
|
|
|
ctrl->event_queue[loop].event_type = 0;
|
|
|
|
change = 1;
|
|
}
|
|
} /* End of FOR loop */
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
int shpchp_enable_slot (struct slot *p_slot)
|
|
{
|
|
u8 getstatus = 0;
|
|
int rc;
|
|
struct pci_func *func;
|
|
|
|
func = shpchp_slot_find(p_slot->bus, p_slot->device, 0);
|
|
if (!func) {
|
|
dbg("%s: Error! slot NULL\n", __FUNCTION__);
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Check to see if (latch closed, card present, power off) */
|
|
down(&p_slot->ctrl->crit_sect);
|
|
rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
|
|
if (rc || !getstatus) {
|
|
info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number);
|
|
up(&p_slot->ctrl->crit_sect);
|
|
return -ENODEV;
|
|
}
|
|
rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
|
|
if (rc || getstatus) {
|
|
info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number);
|
|
up(&p_slot->ctrl->crit_sect);
|
|
return -ENODEV;
|
|
}
|
|
rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
|
|
if (rc || getstatus) {
|
|
info("%s: already enabled on slot(%x)\n", __FUNCTION__, p_slot->number);
|
|
up(&p_slot->ctrl->crit_sect);
|
|
return -ENODEV;
|
|
}
|
|
up(&p_slot->ctrl->crit_sect);
|
|
|
|
slot_remove(func);
|
|
|
|
func = shpchp_slot_create(p_slot->bus);
|
|
if (func == NULL)
|
|
return -ENOMEM;
|
|
|
|
func->bus = p_slot->bus;
|
|
func->device = p_slot->device;
|
|
func->function = 0;
|
|
func->configured = 0;
|
|
func->is_a_board = 1;
|
|
|
|
/* We have to save the presence info for these slots */
|
|
p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save));
|
|
p_slot->hpc_ops->get_power_status(p_slot, &(func->pwr_save));
|
|
dbg("%s: func->pwr_save %x\n", __FUNCTION__, func->pwr_save);
|
|
p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
|
|
func->switch_save = !getstatus? 0x10:0;
|
|
|
|
rc = board_added(func, p_slot->ctrl);
|
|
if (rc) {
|
|
if (is_bridge(func))
|
|
bridge_slot_remove(func);
|
|
else
|
|
slot_remove(func);
|
|
|
|
/* Setup slot structure with entry for empty slot */
|
|
func = shpchp_slot_create(p_slot->bus);
|
|
if (func == NULL)
|
|
return -ENOMEM; /* Out of memory */
|
|
|
|
func->bus = p_slot->bus;
|
|
func->device = p_slot->device;
|
|
func->function = 0;
|
|
func->configured = 0;
|
|
func->is_a_board = 1;
|
|
|
|
/* We have to save the presence info for these slots */
|
|
p_slot->hpc_ops->get_adapter_status(p_slot, &(func->presence_save));
|
|
p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
|
|
func->switch_save = !getstatus? 0x10:0;
|
|
}
|
|
|
|
if (p_slot)
|
|
update_slot_info(p_slot);
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
int shpchp_disable_slot (struct slot *p_slot)
|
|
{
|
|
u8 class_code, header_type, BCR;
|
|
u8 index = 0;
|
|
u8 getstatus = 0;
|
|
u32 rc = 0;
|
|
int ret = 0;
|
|
unsigned int devfn;
|
|
struct pci_bus *pci_bus;
|
|
struct pci_func *func;
|
|
|
|
if (!p_slot->ctrl)
|
|
return -ENODEV;
|
|
|
|
pci_bus = p_slot->ctrl->pci_dev->subordinate;
|
|
|
|
/* Check to see if (latch closed, card present, power on) */
|
|
down(&p_slot->ctrl->crit_sect);
|
|
|
|
ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
|
|
if (ret || !getstatus) {
|
|
info("%s: no adapter on slot(%x)\n", __FUNCTION__, p_slot->number);
|
|
up(&p_slot->ctrl->crit_sect);
|
|
return -ENODEV;
|
|
}
|
|
ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
|
|
if (ret || getstatus) {
|
|
info("%s: latch open on slot(%x)\n", __FUNCTION__, p_slot->number);
|
|
up(&p_slot->ctrl->crit_sect);
|
|
return -ENODEV;
|
|
}
|
|
ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
|
|
if (ret || !getstatus) {
|
|
info("%s: already disabled slot(%x)\n", __FUNCTION__, p_slot->number);
|
|
up(&p_slot->ctrl->crit_sect);
|
|
return -ENODEV;
|
|
}
|
|
up(&p_slot->ctrl->crit_sect);
|
|
|
|
func = shpchp_slot_find(p_slot->bus, p_slot->device, index++);
|
|
|
|
/* Make sure there are no video controllers here
|
|
* for all func of p_slot
|
|
*/
|
|
while (func && !rc) {
|
|
pci_bus->number = func->bus;
|
|
devfn = PCI_DEVFN(func->device, func->function);
|
|
|
|
/* Check the Class Code */
|
|
rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code);
|
|
if (rc)
|
|
return -ENODEV;
|
|
|
|
if (class_code == PCI_BASE_CLASS_DISPLAY) {
|
|
/* Display/Video adapter (not supported) */
|
|
rc = REMOVE_NOT_SUPPORTED;
|
|
} else {
|
|
/* See if it's a bridge */
|
|
rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &header_type);
|
|
if (rc)
|
|
return -ENODEV;
|
|
|
|
/* If it's a bridge, check the VGA Enable bit */
|
|
if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
|
|
rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_BRIDGE_CONTROL, &BCR);
|
|
if (rc)
|
|
return -ENODEV;
|
|
|
|
/* If the VGA Enable bit is set, remove isn't supported */
|
|
if (BCR & PCI_BRIDGE_CTL_VGA) {
|
|
rc = REMOVE_NOT_SUPPORTED;
|
|
}
|
|
}
|
|
}
|
|
|
|
func = shpchp_slot_find(p_slot->bus, p_slot->device, index++);
|
|
}
|
|
|
|
func = shpchp_slot_find(p_slot->bus, p_slot->device, 0);
|
|
if ((func != NULL) && !rc) {
|
|
rc = remove_board(func, p_slot->ctrl);
|
|
} else if (!rc)
|
|
rc = -ENODEV;
|
|
|
|
if (p_slot)
|
|
update_slot_info(p_slot);
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
/**
|
|
* configure_new_device - Configures the PCI header information of one board.
|
|
*
|
|
* @ctrl: pointer to controller structure
|
|
* @func: pointer to function structure
|
|
* @behind_bridge: 1 if this is a recursive call, 0 if not
|
|
* @resources: pointer to set of resource lists
|
|
*
|
|
* Returns 0 if success
|
|
*
|
|
*/
|
|
static u32 configure_new_device (struct controller * ctrl, struct pci_func * func,
|
|
u8 behind_bridge, struct resource_lists * resources, u8 bridge_bus, u8 bridge_dev)
|
|
{
|
|
u8 temp_byte, function, max_functions, stop_it;
|
|
int rc;
|
|
u32 ID;
|
|
struct pci_func *new_slot;
|
|
struct pci_bus lpci_bus, *pci_bus;
|
|
int index;
|
|
|
|
new_slot = func;
|
|
|
|
dbg("%s\n", __FUNCTION__);
|
|
memcpy(&lpci_bus, ctrl->pci_dev->subordinate, sizeof(lpci_bus));
|
|
pci_bus = &lpci_bus;
|
|
pci_bus->number = func->bus;
|
|
|
|
/* Check for Multi-function device */
|
|
rc = pci_bus_read_config_byte(pci_bus, PCI_DEVFN(func->device, func->function), 0x0E, &temp_byte);
|
|
if (rc) {
|
|
dbg("%s: rc = %d\n", __FUNCTION__, rc);
|
|
return rc;
|
|
}
|
|
|
|
if (temp_byte & 0x80) /* Multi-function device */
|
|
max_functions = 8;
|
|
else
|
|
max_functions = 1;
|
|
|
|
function = 0;
|
|
|
|
do {
|
|
rc = configure_new_function(ctrl, new_slot, behind_bridge, resources, bridge_bus, bridge_dev);
|
|
|
|
if (rc) {
|
|
dbg("configure_new_function failed %d\n",rc);
|
|
index = 0;
|
|
|
|
while (new_slot) {
|
|
new_slot = shpchp_slot_find(new_slot->bus, new_slot->device, index++);
|
|
|
|
if (new_slot)
|
|
shpchp_return_board_resources(new_slot, resources);
|
|
}
|
|
|
|
return(rc);
|
|
}
|
|
|
|
function++;
|
|
|
|
stop_it = 0;
|
|
|
|
/* The following loop skips to the next present function
|
|
* and creates a board structure
|
|
*/
|
|
|
|
while ((function < max_functions) && (!stop_it)) {
|
|
pci_bus_read_config_dword(pci_bus, PCI_DEVFN(func->device, function), 0x00, &ID);
|
|
|
|
if (ID == 0xFFFFFFFF) { /* There's nothing there. */
|
|
function++;
|
|
} else { /* There's something there */
|
|
/* Setup slot structure. */
|
|
new_slot = shpchp_slot_create(func->bus);
|
|
|
|
if (new_slot == NULL) {
|
|
/* Out of memory */
|
|
return(1);
|
|
}
|
|
|
|
new_slot->bus = func->bus;
|
|
new_slot->device = func->device;
|
|
new_slot->function = function;
|
|
new_slot->is_a_board = 1;
|
|
new_slot->status = 0;
|
|
|
|
stop_it++;
|
|
}
|
|
}
|
|
|
|
} while (function < max_functions);
|
|
dbg("returning from configure_new_device\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Configuration logic that involves the hotplug data structures and
|
|
* their bookkeeping
|
|
*/
|
|
|
|
|
|
/**
|
|
* configure_new_function - Configures the PCI header information of one device
|
|
*
|
|
* @ctrl: pointer to controller structure
|
|
* @func: pointer to function structure
|
|
* @behind_bridge: 1 if this is a recursive call, 0 if not
|
|
* @resources: pointer to set of resource lists
|
|
*
|
|
* Calls itself recursively for bridged devices.
|
|
* Returns 0 if success
|
|
*
|
|
*/
|
|
static int configure_new_function (struct controller * ctrl, struct pci_func * func,
|
|
u8 behind_bridge, struct resource_lists *resources, u8 bridge_bus, u8 bridge_dev)
|
|
{
|
|
int cloop;
|
|
u8 temp_byte;
|
|
u8 device;
|
|
u8 class_code;
|
|
u16 temp_word;
|
|
u32 rc;
|
|
u32 temp_register;
|
|
u32 base;
|
|
u32 ID;
|
|
unsigned int devfn;
|
|
struct pci_resource *mem_node;
|
|
struct pci_resource *p_mem_node;
|
|
struct pci_resource *io_node;
|
|
struct pci_resource *bus_node;
|
|
struct pci_resource *hold_mem_node;
|
|
struct pci_resource *hold_p_mem_node;
|
|
struct pci_resource *hold_IO_node;
|
|
struct pci_resource *hold_bus_node;
|
|
struct irq_mapping irqs;
|
|
struct pci_func *new_slot;
|
|
struct pci_bus lpci_bus, *pci_bus;
|
|
struct resource_lists temp_resources;
|
|
#if defined(CONFIG_X86_64)
|
|
u8 IRQ=0;
|
|
#endif
|
|
|
|
memcpy(&lpci_bus, ctrl->pci_dev->subordinate, sizeof(lpci_bus));
|
|
pci_bus = &lpci_bus;
|
|
pci_bus->number = func->bus;
|
|
devfn = PCI_DEVFN(func->device, func->function);
|
|
|
|
/* Check for Bridge */
|
|
rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_HEADER_TYPE, &temp_byte);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { /* PCI-PCI Bridge */
|
|
/* set Primary bus */
|
|
dbg("set Primary bus = 0x%x\n", func->bus);
|
|
rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_PRIMARY_BUS, func->bus);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/* find range of busses to use */
|
|
bus_node = get_max_resource(&resources->bus_head, 1L);
|
|
|
|
/* If we don't have any busses to allocate, we can't continue */
|
|
if (!bus_node) {
|
|
err("Got NO bus resource to use\n");
|
|
return -ENOMEM;
|
|
}
|
|
dbg("Got ranges of buses to use: base:len=0x%x:%x\n", bus_node->base, bus_node->length);
|
|
|
|
/* set Secondary bus */
|
|
temp_byte = (u8)bus_node->base;
|
|
dbg("set Secondary bus = 0x%x\n", temp_byte);
|
|
rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_SECONDARY_BUS, temp_byte);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/* set subordinate bus */
|
|
temp_byte = (u8)(bus_node->base + bus_node->length - 1);
|
|
dbg("set subordinate bus = 0x%x\n", temp_byte);
|
|
rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/* Set HP parameters (Cache Line Size, Latency Timer) */
|
|
rc = shpchprm_set_hpp(ctrl, func, PCI_HEADER_TYPE_BRIDGE);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/* Setup the IO, memory, and prefetchable windows */
|
|
|
|
io_node = get_max_resource(&(resources->io_head), 0x1000L);
|
|
if (io_node) {
|
|
dbg("io_node(base, len, next) (%x, %x, %p)\n", io_node->base, io_node->length, io_node->next);
|
|
}
|
|
|
|
mem_node = get_max_resource(&(resources->mem_head), 0x100000L);
|
|
if (mem_node) {
|
|
dbg("mem_node(base, len, next) (%x, %x, %p)\n", mem_node->base, mem_node->length, mem_node->next);
|
|
}
|
|
|
|
if (resources->p_mem_head)
|
|
p_mem_node = get_max_resource(&(resources->p_mem_head), 0x100000L);
|
|
else {
|
|
/*
|
|
* In some platform implementation, MEM and PMEM are not
|
|
* distinguished, and hence ACPI _CRS has only MEM entries
|
|
* for both MEM and PMEM.
|
|
*/
|
|
dbg("using MEM for PMEM\n");
|
|
p_mem_node = get_max_resource(&(resources->mem_head), 0x100000L);
|
|
}
|
|
if (p_mem_node) {
|
|
dbg("p_mem_node(base, len, next) (%x, %x, %p)\n", p_mem_node->base, p_mem_node->length, p_mem_node->next);
|
|
}
|
|
|
|
/* set up the IRQ info */
|
|
if (!resources->irqs) {
|
|
irqs.barber_pole = 0;
|
|
irqs.interrupt[0] = 0;
|
|
irqs.interrupt[1] = 0;
|
|
irqs.interrupt[2] = 0;
|
|
irqs.interrupt[3] = 0;
|
|
irqs.valid_INT = 0;
|
|
} else {
|
|
irqs.barber_pole = resources->irqs->barber_pole;
|
|
irqs.interrupt[0] = resources->irqs->interrupt[0];
|
|
irqs.interrupt[1] = resources->irqs->interrupt[1];
|
|
irqs.interrupt[2] = resources->irqs->interrupt[2];
|
|
irqs.interrupt[3] = resources->irqs->interrupt[3];
|
|
irqs.valid_INT = resources->irqs->valid_INT;
|
|
}
|
|
|
|
/* set up resource lists that are now aligned on top and bottom
|
|
* for anything behind the bridge.
|
|
*/
|
|
temp_resources.bus_head = bus_node;
|
|
temp_resources.io_head = io_node;
|
|
temp_resources.mem_head = mem_node;
|
|
temp_resources.p_mem_head = p_mem_node;
|
|
temp_resources.irqs = &irqs;
|
|
|
|
/* Make copies of the nodes we are going to pass down so that
|
|
* if there is a problem,we can just use these to free resources
|
|
*/
|
|
hold_bus_node = kmalloc(sizeof(*hold_bus_node), GFP_KERNEL);
|
|
hold_IO_node = kmalloc(sizeof(*hold_IO_node), GFP_KERNEL);
|
|
hold_mem_node = kmalloc(sizeof(*hold_mem_node), GFP_KERNEL);
|
|
hold_p_mem_node = kmalloc(sizeof(*hold_p_mem_node), GFP_KERNEL);
|
|
|
|
if (!hold_bus_node || !hold_IO_node || !hold_mem_node || !hold_p_mem_node) {
|
|
kfree(hold_bus_node);
|
|
kfree(hold_IO_node);
|
|
kfree(hold_mem_node);
|
|
kfree(hold_p_mem_node);
|
|
|
|
return 1;
|
|
}
|
|
|
|
memcpy(hold_bus_node, bus_node, sizeof(struct pci_resource));
|
|
|
|
bus_node->base += 1;
|
|
bus_node->length -= 1;
|
|
bus_node->next = NULL;
|
|
|
|
/* If we have IO resources copy them and fill in the bridge's
|
|
* IO range registers
|
|
*/
|
|
if (io_node) {
|
|
memcpy(hold_IO_node, io_node, sizeof(struct pci_resource));
|
|
io_node->next = NULL;
|
|
|
|
/* set IO base and Limit registers */
|
|
RES_CHECK(io_node->base, 8);
|
|
temp_byte = (u8)(io_node->base >> 8);
|
|
rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_BASE, temp_byte);
|
|
|
|
RES_CHECK(io_node->base + io_node->length - 1, 8);
|
|
temp_byte = (u8)((io_node->base + io_node->length - 1) >> 8);
|
|
rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_LIMIT, temp_byte);
|
|
} else {
|
|
kfree(hold_IO_node);
|
|
hold_IO_node = NULL;
|
|
}
|
|
|
|
/* If we have memory resources copy them and fill in the bridge's
|
|
* memory range registers. Otherwise, fill in the range
|
|
* registers with values that disable them.
|
|
*/
|
|
if (mem_node) {
|
|
memcpy(hold_mem_node, mem_node, sizeof(struct pci_resource));
|
|
mem_node->next = NULL;
|
|
|
|
/* set Mem base and Limit registers */
|
|
RES_CHECK(mem_node->base, 16);
|
|
temp_word = (u32)(mem_node->base >> 16);
|
|
rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_BASE, temp_word);
|
|
|
|
RES_CHECK(mem_node->base + mem_node->length - 1, 16);
|
|
temp_word = (u32)((mem_node->base + mem_node->length - 1) >> 16);
|
|
rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
|
|
} else {
|
|
temp_word = 0xFFFF;
|
|
rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_BASE, temp_word);
|
|
|
|
temp_word = 0x0000;
|
|
rc = pci_bus_write_config_word(pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
|
|
|
|
kfree(hold_mem_node);
|
|
hold_mem_node = NULL;
|
|
}
|
|
|
|
/* If we have prefetchable memory resources copy them and
|
|
* fill in the bridge's memory range registers. Otherwise,
|
|
* fill in the range registers with values that disable them.
|
|
*/
|
|
if (p_mem_node) {
|
|
memcpy(hold_p_mem_node, p_mem_node, sizeof(struct pci_resource));
|
|
p_mem_node->next = NULL;
|
|
|
|
/* set Pre Mem base and Limit registers */
|
|
RES_CHECK(p_mem_node->base, 16);
|
|
temp_word = (u32)(p_mem_node->base >> 16);
|
|
rc = pci_bus_write_config_word(pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word);
|
|
|
|
RES_CHECK(p_mem_node->base + p_mem_node->length - 1, 16);
|
|
temp_word = (u32)((p_mem_node->base + p_mem_node->length - 1) >> 16);
|
|
rc = pci_bus_write_config_word(pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
|
|
} else {
|
|
temp_word = 0xFFFF;
|
|
rc = pci_bus_write_config_word(pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word);
|
|
|
|
temp_word = 0x0000;
|
|
rc = pci_bus_write_config_word(pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
|
|
|
|
kfree(hold_p_mem_node);
|
|
hold_p_mem_node = NULL;
|
|
}
|
|
|
|
/* Adjust this to compensate for extra adjustment in first loop */
|
|
irqs.barber_pole--;
|
|
|
|
rc = 0;
|
|
|
|
/* Here we actually find the devices and configure them */
|
|
for (device = 0; (device <= 0x1F) && !rc; device++) {
|
|
irqs.barber_pole = (irqs.barber_pole + 1) & 0x03;
|
|
|
|
ID = 0xFFFFFFFF;
|
|
pci_bus->number = hold_bus_node->base;
|
|
pci_bus_read_config_dword(pci_bus, PCI_DEVFN(device, 0),
|
|
PCI_VENDOR_ID, &ID);
|
|
pci_bus->number = func->bus;
|
|
|
|
if (ID != 0xFFFFFFFF) { /* device Present */
|
|
/* Setup slot structure. */
|
|
new_slot = shpchp_slot_create(hold_bus_node->base);
|
|
|
|
if (new_slot == NULL) {
|
|
/* Out of memory */
|
|
rc = -ENOMEM;
|
|
continue;
|
|
}
|
|
|
|
new_slot->bus = hold_bus_node->base;
|
|
new_slot->device = device;
|
|
new_slot->function = 0;
|
|
new_slot->is_a_board = 1;
|
|
new_slot->status = 0;
|
|
|
|
rc = configure_new_device(ctrl, new_slot, 1, &temp_resources, func->bus, func->device);
|
|
dbg("configure_new_device rc=0x%x\n",rc);
|
|
} /* End of IF (device in slot?) */
|
|
} /* End of FOR loop */
|
|
|
|
if (rc) {
|
|
shpchp_destroy_resource_list(&temp_resources);
|
|
|
|
return_resource(&(resources->bus_head), hold_bus_node);
|
|
return_resource(&(resources->io_head), hold_IO_node);
|
|
return_resource(&(resources->mem_head), hold_mem_node);
|
|
return_resource(&(resources->p_mem_head), hold_p_mem_node);
|
|
return(rc);
|
|
}
|
|
|
|
/* save the interrupt routing information */
|
|
if (resources->irqs) {
|
|
resources->irqs->interrupt[0] = irqs.interrupt[0];
|
|
resources->irqs->interrupt[1] = irqs.interrupt[1];
|
|
resources->irqs->interrupt[2] = irqs.interrupt[2];
|
|
resources->irqs->interrupt[3] = irqs.interrupt[3];
|
|
resources->irqs->valid_INT = irqs.valid_INT;
|
|
} else if (!behind_bridge) {
|
|
/* We need to hook up the interrupts here */
|
|
for (cloop = 0; cloop < 4; cloop++) {
|
|
if (irqs.valid_INT & (0x01 << cloop)) {
|
|
rc = shpchp_set_irq(func->bus, func->device,
|
|
0x0A + cloop, irqs.interrupt[cloop]);
|
|
if (rc) {
|
|
shpchp_destroy_resource_list (&temp_resources);
|
|
return_resource(&(resources->bus_head), hold_bus_node);
|
|
return_resource(&(resources->io_head), hold_IO_node);
|
|
return_resource(&(resources->mem_head), hold_mem_node);
|
|
return_resource(&(resources->p_mem_head), hold_p_mem_node);
|
|
return rc;
|
|
}
|
|
}
|
|
} /* end of for loop */
|
|
}
|
|
|
|
/* Return unused bus resources
|
|
* First use the temporary node to store information for the board
|
|
*/
|
|
if (hold_bus_node && bus_node && temp_resources.bus_head) {
|
|
hold_bus_node->length = bus_node->base - hold_bus_node->base;
|
|
|
|
hold_bus_node->next = func->bus_head;
|
|
func->bus_head = hold_bus_node;
|
|
|
|
temp_byte = (u8)(temp_resources.bus_head->base - 1);
|
|
|
|
/* set subordinate bus */
|
|
dbg("re-set subordinate bus = 0x%x\n", temp_byte);
|
|
rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_SUBORDINATE_BUS, temp_byte);
|
|
|
|
if (temp_resources.bus_head->length == 0) {
|
|
kfree(temp_resources.bus_head);
|
|
temp_resources.bus_head = NULL;
|
|
} else {
|
|
dbg("return bus res of b:d(0x%x:%x) base:len(0x%x:%x)\n",
|
|
func->bus, func->device, temp_resources.bus_head->base, temp_resources.bus_head->length);
|
|
return_resource(&(resources->bus_head), temp_resources.bus_head);
|
|
}
|
|
}
|
|
|
|
/* If we have IO space available and there is some left,
|
|
* return the unused portion
|
|
*/
|
|
if (hold_IO_node && temp_resources.io_head) {
|
|
io_node = do_pre_bridge_resource_split(&(temp_resources.io_head),
|
|
&hold_IO_node, 0x1000);
|
|
|
|
/* Check if we were able to split something off */
|
|
if (io_node) {
|
|
hold_IO_node->base = io_node->base + io_node->length;
|
|
|
|
RES_CHECK(hold_IO_node->base, 8);
|
|
temp_byte = (u8)((hold_IO_node->base) >> 8);
|
|
rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_BASE, temp_byte);
|
|
|
|
return_resource(&(resources->io_head), io_node);
|
|
}
|
|
|
|
io_node = do_bridge_resource_split(&(temp_resources.io_head), 0x1000);
|
|
|
|
/* Check if we were able to split something off */
|
|
if (io_node) {
|
|
/* First use the temporary node to store information for the board */
|
|
hold_IO_node->length = io_node->base - hold_IO_node->base;
|
|
|
|
/* If we used any, add it to the board's list */
|
|
if (hold_IO_node->length) {
|
|
hold_IO_node->next = func->io_head;
|
|
func->io_head = hold_IO_node;
|
|
|
|
RES_CHECK(io_node->base - 1, 8);
|
|
temp_byte = (u8)((io_node->base - 1) >> 8);
|
|
rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_IO_LIMIT, temp_byte);
|
|
|
|
return_resource(&(resources->io_head), io_node);
|
|
} else {
|
|
/* it doesn't need any IO */
|
|
temp_byte = 0x00;
|
|
rc = pci_bus_write_config_byte(pci_bus, devfn, PCI_IO_LIMIT, temp_byte);
|
|
|
|
return_resource(&(resources->io_head), io_node);
|
|
kfree(hold_IO_node);
|
|
}
|
|
} else {
|
|
/* it used most of the range */
|
|
hold_IO_node->next = func->io_head;
|
|
func->io_head = hold_IO_node;
|
|
}
|
|
} else if (hold_IO_node) {
|
|
/* it used the whole range */
|
|
hold_IO_node->next = func->io_head;
|
|
func->io_head = hold_IO_node;
|
|
}
|
|
|
|
/* If we have memory space available and there is some left,
|
|
* return the unused portion
|
|
*/
|
|
if (hold_mem_node && temp_resources.mem_head) {
|
|
mem_node = do_pre_bridge_resource_split(&(temp_resources.mem_head), &hold_mem_node, 0x100000L);
|
|
|
|
/* Check if we were able to split something off */
|
|
if (mem_node) {
|
|
hold_mem_node->base = mem_node->base + mem_node->length;
|
|
|
|
RES_CHECK(hold_mem_node->base, 16);
|
|
temp_word = (u32)((hold_mem_node->base) >> 16);
|
|
rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_BASE, temp_word);
|
|
|
|
return_resource(&(resources->mem_head), mem_node);
|
|
}
|
|
|
|
mem_node = do_bridge_resource_split(&(temp_resources.mem_head), 0x100000L);
|
|
|
|
/* Check if we were able to split something off */
|
|
if (mem_node) {
|
|
/* First use the temporary node to store information for the board */
|
|
hold_mem_node->length = mem_node->base - hold_mem_node->base;
|
|
|
|
if (hold_mem_node->length) {
|
|
hold_mem_node->next = func->mem_head;
|
|
func->mem_head = hold_mem_node;
|
|
|
|
/* configure end address */
|
|
RES_CHECK(mem_node->base - 1, 16);
|
|
temp_word = (u32)((mem_node->base - 1) >> 16);
|
|
rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
|
|
|
|
/* Return unused resources to the pool */
|
|
return_resource(&(resources->mem_head), mem_node);
|
|
} else {
|
|
/* it doesn't need any Mem */
|
|
temp_word = 0x0000;
|
|
rc = pci_bus_write_config_word (pci_bus, devfn, PCI_MEMORY_LIMIT, temp_word);
|
|
|
|
return_resource(&(resources->mem_head), mem_node);
|
|
kfree(hold_mem_node);
|
|
}
|
|
} else {
|
|
/* it used most of the range */
|
|
hold_mem_node->next = func->mem_head;
|
|
func->mem_head = hold_mem_node;
|
|
}
|
|
} else if (hold_mem_node) {
|
|
/* it used the whole range */
|
|
hold_mem_node->next = func->mem_head;
|
|
func->mem_head = hold_mem_node;
|
|
}
|
|
|
|
/* If we have prefetchable memory space available and there is some
|
|
* left at the end, return the unused portion
|
|
*/
|
|
if (hold_p_mem_node && temp_resources.p_mem_head) {
|
|
p_mem_node = do_pre_bridge_resource_split(&(temp_resources.p_mem_head),
|
|
&hold_p_mem_node, 0x100000L);
|
|
|
|
/* Check if we were able to split something off */
|
|
if (p_mem_node) {
|
|
hold_p_mem_node->base = p_mem_node->base + p_mem_node->length;
|
|
|
|
RES_CHECK(hold_p_mem_node->base, 16);
|
|
temp_word = (u32)((hold_p_mem_node->base) >> 16);
|
|
rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_BASE, temp_word);
|
|
|
|
return_resource(&(resources->p_mem_head), p_mem_node);
|
|
}
|
|
|
|
p_mem_node = do_bridge_resource_split(&(temp_resources.p_mem_head), 0x100000L);
|
|
|
|
/* Check if we were able to split something off */
|
|
if (p_mem_node) {
|
|
/* First use the temporary node to store information for the board */
|
|
hold_p_mem_node->length = p_mem_node->base - hold_p_mem_node->base;
|
|
|
|
/* If we used any, add it to the board's list */
|
|
if (hold_p_mem_node->length) {
|
|
hold_p_mem_node->next = func->p_mem_head;
|
|
func->p_mem_head = hold_p_mem_node;
|
|
|
|
RES_CHECK(p_mem_node->base - 1, 16);
|
|
temp_word = (u32)((p_mem_node->base - 1) >> 16);
|
|
rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
|
|
|
|
return_resource(&(resources->p_mem_head), p_mem_node);
|
|
} else {
|
|
/* it doesn't need any PMem */
|
|
temp_word = 0x0000;
|
|
rc = pci_bus_write_config_word (pci_bus, devfn, PCI_PREF_MEMORY_LIMIT, temp_word);
|
|
|
|
return_resource(&(resources->p_mem_head), p_mem_node);
|
|
kfree(hold_p_mem_node);
|
|
}
|
|
} else {
|
|
/* it used the most of the range */
|
|
hold_p_mem_node->next = func->p_mem_head;
|
|
func->p_mem_head = hold_p_mem_node;
|
|
}
|
|
} else if (hold_p_mem_node) {
|
|
/* it used the whole range */
|
|
hold_p_mem_node->next = func->p_mem_head;
|
|
func->p_mem_head = hold_p_mem_node;
|
|
}
|
|
|
|
/* We should be configuring an IRQ and the bridge's base address
|
|
* registers if it needs them. Although we have never seen such
|
|
* a device
|
|
*/
|
|
|
|
shpchprm_enable_card(ctrl, func, PCI_HEADER_TYPE_BRIDGE);
|
|
|
|
dbg("PCI Bridge Hot-Added s:b:d:f(%02x:%02x:%02x:%02x)\n", ctrl->seg, func->bus, func->device, func->function);
|
|
} else if ((temp_byte & 0x7F) == PCI_HEADER_TYPE_NORMAL) {
|
|
/* Standard device */
|
|
u64 base64;
|
|
rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code);
|
|
|
|
if (class_code == PCI_BASE_CLASS_DISPLAY)
|
|
return (DEVICE_TYPE_NOT_SUPPORTED);
|
|
|
|
/* Figure out IO and memory needs */
|
|
for (cloop = PCI_BASE_ADDRESS_0; cloop <= PCI_BASE_ADDRESS_5; cloop += 4) {
|
|
temp_register = 0xFFFFFFFF;
|
|
|
|
rc = pci_bus_write_config_dword (pci_bus, devfn, cloop, temp_register);
|
|
rc = pci_bus_read_config_dword(pci_bus, devfn, cloop, &temp_register);
|
|
dbg("Bar[%x]=0x%x on bus:dev:func(0x%x:%x:%x)\n", cloop, temp_register, func->bus, func->device,
|
|
func->function);
|
|
|
|
if (!temp_register)
|
|
continue;
|
|
|
|
base64 = 0L;
|
|
if (temp_register & PCI_BASE_ADDRESS_SPACE_IO) {
|
|
/* Map IO */
|
|
|
|
/* set base = amount of IO space */
|
|
base = temp_register & 0xFFFFFFFC;
|
|
base = ~base + 1;
|
|
|
|
dbg("NEED IO length(0x%x)\n", base);
|
|
io_node = get_io_resource(&(resources->io_head),(ulong)base);
|
|
|
|
/* allocate the resource to the board */
|
|
if (io_node) {
|
|
dbg("Got IO base=0x%x(length=0x%x)\n", io_node->base, io_node->length);
|
|
base = (u32)io_node->base;
|
|
io_node->next = func->io_head;
|
|
func->io_head = io_node;
|
|
} else {
|
|
err("Got NO IO resource(length=0x%x)\n", base);
|
|
return -ENOMEM;
|
|
}
|
|
} else { /* map MEM */
|
|
int prefetchable = 1;
|
|
struct pci_resource **res_node = &func->p_mem_head;
|
|
char *res_type_str = "PMEM";
|
|
u32 temp_register2;
|
|
|
|
if (!(temp_register & PCI_BASE_ADDRESS_MEM_PREFETCH)) {
|
|
prefetchable = 0;
|
|
res_node = &func->mem_head;
|
|
res_type_str++;
|
|
}
|
|
|
|
base = temp_register & 0xFFFFFFF0;
|
|
base = ~base + 1;
|
|
|
|
switch (temp_register & PCI_BASE_ADDRESS_MEM_TYPE_MASK) {
|
|
case PCI_BASE_ADDRESS_MEM_TYPE_32:
|
|
dbg("NEED 32 %s bar=0x%x(length=0x%x)\n", res_type_str, temp_register, base);
|
|
|
|
if (prefetchable && resources->p_mem_head)
|
|
mem_node=get_resource(&(resources->p_mem_head), (ulong)base);
|
|
else {
|
|
if (prefetchable)
|
|
dbg("using MEM for PMEM\n");
|
|
mem_node=get_resource(&(resources->mem_head), (ulong)base);
|
|
}
|
|
|
|
/* allocate the resource to the board */
|
|
if (mem_node) {
|
|
base = (u32)mem_node->base;
|
|
mem_node->next = *res_node;
|
|
*res_node = mem_node;
|
|
dbg("Got 32 %s base=0x%x(length=0x%x)\n", res_type_str, mem_node->base,
|
|
mem_node->length);
|
|
} else {
|
|
err("Got NO 32 %s resource(length=0x%x)\n", res_type_str, base);
|
|
return -ENOMEM;
|
|
}
|
|
break;
|
|
case PCI_BASE_ADDRESS_MEM_TYPE_64:
|
|
rc = pci_bus_read_config_dword(pci_bus, devfn, cloop+4, &temp_register2);
|
|
dbg("NEED 64 %s bar=0x%x:%x(length=0x%x)\n", res_type_str, temp_register2,
|
|
temp_register, base);
|
|
|
|
if (prefetchable && resources->p_mem_head)
|
|
mem_node = get_resource(&(resources->p_mem_head), (ulong)base);
|
|
else {
|
|
if (prefetchable)
|
|
dbg("using MEM for PMEM\n");
|
|
mem_node = get_resource(&(resources->mem_head), (ulong)base);
|
|
}
|
|
|
|
/* allocate the resource to the board */
|
|
if (mem_node) {
|
|
base64 = mem_node->base;
|
|
mem_node->next = *res_node;
|
|
*res_node = mem_node;
|
|
dbg("Got 64 %s base=0x%x:%x(length=%x)\n", res_type_str, (u32)(base64 >> 32),
|
|
(u32)base64, mem_node->length);
|
|
} else {
|
|
err("Got NO 64 %s resource(length=0x%x)\n", res_type_str, base);
|
|
return -ENOMEM;
|
|
}
|
|
break;
|
|
default:
|
|
dbg("reserved BAR type=0x%x\n", temp_register);
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
if (base64) {
|
|
rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, (u32)base64);
|
|
cloop += 4;
|
|
base64 >>= 32;
|
|
|
|
if (base64) {
|
|
dbg("%s: high dword of base64(0x%x) set to 0\n", __FUNCTION__, (u32)base64);
|
|
base64 = 0x0L;
|
|
}
|
|
|
|
rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, (u32)base64);
|
|
} else {
|
|
rc = pci_bus_write_config_dword(pci_bus, devfn, cloop, base);
|
|
}
|
|
} /* End of base register loop */
|
|
|
|
#if defined(CONFIG_X86_64)
|
|
/* Figure out which interrupt pin this function uses */
|
|
rc = pci_bus_read_config_byte (pci_bus, devfn, PCI_INTERRUPT_PIN, &temp_byte);
|
|
|
|
/* If this function needs an interrupt and we are behind a bridge
|
|
and the pin is tied to something that's alread mapped,
|
|
set this one the same
|
|
*/
|
|
if (temp_byte && resources->irqs &&
|
|
(resources->irqs->valid_INT &
|
|
(0x01 << ((temp_byte + resources->irqs->barber_pole - 1) & 0x03)))) {
|
|
/* We have to share with something already set up */
|
|
IRQ = resources->irqs->interrupt[(temp_byte + resources->irqs->barber_pole - 1) & 0x03];
|
|
} else {
|
|
/* Program IRQ based on card type */
|
|
rc = pci_bus_read_config_byte (pci_bus, devfn, 0x0B, &class_code);
|
|
|
|
if (class_code == PCI_BASE_CLASS_STORAGE) {
|
|
IRQ = shpchp_disk_irq;
|
|
} else {
|
|
IRQ = shpchp_nic_irq;
|
|
}
|
|
}
|
|
|
|
/* IRQ Line */
|
|
rc = pci_bus_write_config_byte (pci_bus, devfn, PCI_INTERRUPT_LINE, IRQ);
|
|
|
|
if (!behind_bridge) {
|
|
rc = shpchp_set_irq(func->bus, func->device, temp_byte + 0x09, IRQ);
|
|
if (rc)
|
|
return(1);
|
|
} else {
|
|
/* TBD - this code may also belong in the other clause of this If statement */
|
|
resources->irqs->interrupt[(temp_byte + resources->irqs->barber_pole - 1) & 0x03] = IRQ;
|
|
resources->irqs->valid_INT |= 0x01 << (temp_byte + resources->irqs->barber_pole - 1) & 0x03;
|
|
}
|
|
#endif
|
|
/* Disable ROM base Address */
|
|
rc = pci_bus_write_config_dword (pci_bus, devfn, PCI_ROM_ADDRESS, 0x00);
|
|
|
|
/* Set HP parameters (Cache Line Size, Latency Timer) */
|
|
rc = shpchprm_set_hpp(ctrl, func, PCI_HEADER_TYPE_NORMAL);
|
|
if (rc)
|
|
return rc;
|
|
|
|
shpchprm_enable_card(ctrl, func, PCI_HEADER_TYPE_NORMAL);
|
|
|
|
dbg("PCI function Hot-Added s:b:d:f(%02x:%02x:%02x:%02x)\n", ctrl->seg, func->bus, func->device, func->function);
|
|
} /* End of Not-A-Bridge else */
|
|
else {
|
|
/* It's some strange type of PCI adapter (Cardbus?) */
|
|
return(DEVICE_TYPE_NOT_SUPPORTED);
|
|
}
|
|
|
|
func->configured = 1;
|
|
|
|
return 0;
|
|
}
|
|
|