| 1 |
1275 |
phoenix |
/*
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* Compaq 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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*
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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>
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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/proc_fs.h>
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#include <linux/pci.h>
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| 36 |
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#include "cpqphp.h"
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#include "cpqphp_nvram.h"
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| 38 |
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#include "../../arch/i386/kernel/pci-i386.h" /* horrible hack showing how processor dependant we are... */
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| 39 |
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| 40 |
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| 41 |
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u8 cpqhp_nic_irq;
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u8 cpqhp_disk_irq;
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static u16 unused_IRQ;
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| 46 |
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static int is_pci_dev_in_use(struct pci_dev* dev)
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| 48 |
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{
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| 49 |
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/*
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| 50 |
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* dev->driver will be set if the device is in use by a new-style
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| 51 |
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* driver -- otherwise, check the device's regions to see if any
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| 52 |
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* driver has claimed them
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*/
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| 54 |
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| 55 |
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int i, inuse=0;
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| 57 |
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if (dev->driver) return 1; //assume driver feels responsible
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| 58 |
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| 59 |
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for (i = 0; !dev->driver && !inuse && (i < 6); i++) {
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if (!pci_resource_start(dev, i))
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continue;
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| 62 |
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| 63 |
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if (pci_resource_flags(dev, i) & IORESOURCE_IO)
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inuse = check_region(pci_resource_start(dev, i),
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pci_resource_len(dev, i));
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| 66 |
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else if (pci_resource_flags(dev, i) & IORESOURCE_MEM)
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inuse = check_mem_region(pci_resource_start(dev, i),
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| 68 |
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pci_resource_len(dev, i));
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| 69 |
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}
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| 70 |
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| 71 |
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return inuse;
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| 73 |
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}
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static int pci_hp_remove_device(struct pci_dev *dev)
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{
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if (is_pci_dev_in_use(dev)) {
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err("***Cannot safely power down device -- "
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| 80 |
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"it appears to be in use***\n");
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return -EBUSY;
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}
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| 83 |
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pci_remove_device(dev);
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return 0;
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}
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/*
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* detect_HRT_floating_pointer
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*
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* find the Hot Plug Resource Table in the specified region of memory.
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*
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*/
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static void *detect_HRT_floating_pointer(void *begin, void *end)
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{
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void *fp;
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void *endp;
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u8 temp1, temp2, temp3, temp4;
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int status = 0;
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endp = (end - sizeof(struct hrt) + 1);
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for (fp = begin; fp <= endp; fp += 16) {
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temp1 = readb(fp + SIG0);
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temp2 = readb(fp + SIG1);
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temp3 = readb(fp + SIG2);
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temp4 = readb(fp + SIG3);
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if (temp1 == '$' &&
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temp2 == 'H' &&
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temp3 == 'R' &&
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temp4 == 'T') {
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status = 1;
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break;
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}
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}
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if (!status)
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fp = NULL;
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dbg("Discovered Hotplug Resource Table at %p\n", fp);
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return fp;
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}
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static int configure_visit_pci_dev (struct pci_dev_wrapped *wrapped_dev, struct pci_bus_wrapped *wrapped_bus)
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{
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struct pci_bus* bus = wrapped_bus->bus;
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struct pci_dev* dev = wrapped_dev->dev;
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struct pci_func *temp_func;
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int i=0;
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//We need to fix up the hotplug function representation with the linux representation
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do {
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temp_func = cpqhp_slot_find(dev->bus->number, dev->devfn >> 3, i++);
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} while (temp_func && (temp_func->function != (dev->devfn & 0x07)));
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if (temp_func) {
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temp_func->pci_dev = dev;
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} else {
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//We did not even find a hotplug rep of the function, create it
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//This code might be taken out if we can guarantee the creation of functions
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//in parallel (hotplug and Linux at the same time).
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dbg("@@@@@@@@@@@ cpqhp_slot_create in %s\n", __FUNCTION__);
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temp_func = cpqhp_slot_create(bus->number);
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if (temp_func == NULL)
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return -ENOMEM;
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temp_func->pci_dev = dev;
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}
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//Create /proc/bus/pci proc entry for this device and bus device is on
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//Notify the drivers of the change
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if (temp_func->pci_dev) {
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pci_proc_attach_device(temp_func->pci_dev);
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pci_announce_device_to_drivers(temp_func->pci_dev);
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}
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return 0;
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}
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static int unconfigure_visit_pci_dev_phase2 (struct pci_dev_wrapped *wrapped_dev, struct pci_bus_wrapped *wrapped_bus)
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{
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struct pci_dev* dev = wrapped_dev->dev;
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struct pci_func *temp_func;
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int i=0;
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//We need to remove the hotplug function representation with the linux representation
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do {
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temp_func = cpqhp_slot_find(dev->bus->number, dev->devfn >> 3, i++);
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if (temp_func) {
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dbg("temp_func->function = %d\n", temp_func->function);
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}
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} while (temp_func && (temp_func->function != (dev->devfn & 0x07)));
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//Now, remove the Linux Representation
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if (dev) {
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if (pci_hp_remove_device(dev) == 0) {
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kfree(dev); //Now, remove
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| 179 |
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} else {
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return -1; // problems while freeing, abort visitation
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}
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| 182 |
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}
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| 184 |
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if (temp_func) {
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temp_func->pci_dev = NULL;
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} else {
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| 187 |
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dbg("No pci_func representation for bus, devfn = %d, %x\n", dev->bus->number, dev->devfn);
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| 188 |
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}
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| 189 |
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| 190 |
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return 0;
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| 191 |
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}
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| 192 |
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| 193 |
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| 194 |
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static int unconfigure_visit_pci_bus_phase2 (struct pci_bus_wrapped *wrapped_bus, struct pci_dev_wrapped *wrapped_dev)
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{
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| 196 |
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struct pci_bus* bus = wrapped_bus->bus;
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| 197 |
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| 198 |
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//The cleanup code for proc entries regarding buses should be in the kernel...
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| 199 |
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if (bus->procdir)
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| 200 |
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dbg("detach_pci_bus %s\n", bus->procdir->name);
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| 201 |
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pci_proc_detach_bus(bus);
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| 202 |
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// The cleanup code should live in the kernel...
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| 203 |
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bus->self->subordinate = NULL;
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| 204 |
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// unlink from parent bus
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| 205 |
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list_del(&bus->node);
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| 207 |
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// Now, remove
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if (bus)
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| 209 |
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kfree(bus);
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| 210 |
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| 211 |
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return 0;
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| 212 |
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}
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| 213 |
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| 214 |
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| 215 |
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static int unconfigure_visit_pci_dev_phase1 (struct pci_dev_wrapped *wrapped_dev, struct pci_bus_wrapped *wrapped_bus)
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| 216 |
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{
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| 217 |
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struct pci_dev* dev = wrapped_dev->dev;
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| 218 |
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| 219 |
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dbg("attempting removal of driver for device (%x, %x, %x)\n", dev->bus->number, PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
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| 220 |
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//Now, remove the Linux Driver Representation
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| 221 |
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if (dev->driver) {
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| 222 |
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if (dev->driver->remove) {
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| 223 |
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dev->driver->remove(dev);
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| 224 |
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dbg("driver was properly removed\n");
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| 225 |
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}
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| 226 |
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dev->driver = NULL;
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| 227 |
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}
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| 228 |
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| 229 |
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return is_pci_dev_in_use(dev);
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| 230 |
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}
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| 231 |
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| 232 |
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| 233 |
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static struct pci_visit configure_functions = {
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| 234 |
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visit_pci_dev: configure_visit_pci_dev,
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| 235 |
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};
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| 236 |
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| 237 |
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| 238 |
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static struct pci_visit unconfigure_functions_phase1 = {
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| 239 |
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post_visit_pci_dev: unconfigure_visit_pci_dev_phase1
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| 240 |
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};
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| 241 |
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| 242 |
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static struct pci_visit unconfigure_functions_phase2 = {
|
| 243 |
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post_visit_pci_bus: unconfigure_visit_pci_bus_phase2,
|
| 244 |
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post_visit_pci_dev: unconfigure_visit_pci_dev_phase2
|
| 245 |
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};
|
| 246 |
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| 247 |
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| 248 |
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int cpqhp_configure_device (struct controller* ctrl, struct pci_func* func)
|
| 249 |
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{
|
| 250 |
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unsigned char bus;
|
| 251 |
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struct pci_dev dev0;
|
| 252 |
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struct pci_bus *child;
|
| 253 |
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struct pci_dev* temp;
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| 254 |
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int rc = 0;
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| 255 |
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|
| 256 |
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struct pci_dev_wrapped wrapped_dev;
|
| 257 |
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struct pci_bus_wrapped wrapped_bus;
|
| 258 |
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memset(&wrapped_dev, 0, sizeof(struct pci_dev_wrapped));
|
| 259 |
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memset(&wrapped_bus, 0, sizeof(struct pci_bus_wrapped));
|
| 260 |
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| 261 |
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memset(&dev0, 0, sizeof(struct pci_dev));
|
| 262 |
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|
| 263 |
|
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if (func->pci_dev == NULL)
|
| 264 |
|
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func->pci_dev = pci_find_slot(func->bus, (func->device << 3) | (func->function & 0x7));
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| 265 |
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|
| 266 |
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//Still NULL ? Well then scan for it !
|
| 267 |
|
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if (func->pci_dev == NULL) {
|
| 268 |
|
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dbg("INFO: pci_dev still null\n");
|
| 269 |
|
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dev0.bus = ctrl->pci_dev->bus;
|
| 270 |
|
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dev0.devfn = (func->device << 3) + (func->function & 0x7);
|
| 271 |
|
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dev0.sysdata = ctrl->pci_dev->sysdata;
|
| 272 |
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|
|
| 273 |
|
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//this will generate pci_dev structures for all functions, but we will only call this case when lookup fails
|
| 274 |
|
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func->pci_dev = pci_scan_slot(&dev0);
|
| 275 |
|
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if (func->pci_dev == NULL) {
|
| 276 |
|
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dbg("ERROR: pci_dev still null\n");
|
| 277 |
|
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return 0;
|
| 278 |
|
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}
|
| 279 |
|
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}
|
| 280 |
|
|
|
| 281 |
|
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if (func->pci_dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
|
| 282 |
|
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pci_read_config_byte(func->pci_dev, PCI_SECONDARY_BUS, &bus);
|
| 283 |
|
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child = (struct pci_bus*) pci_add_new_bus(func->pci_dev->bus, (func->pci_dev), bus);
|
| 284 |
|
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pci_do_scan_bus(child);
|
| 285 |
|
|
|
| 286 |
|
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}
|
| 287 |
|
|
|
| 288 |
|
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temp = func->pci_dev;
|
| 289 |
|
|
|
| 290 |
|
|
if (temp) {
|
| 291 |
|
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wrapped_dev.dev = temp;
|
| 292 |
|
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wrapped_bus.bus = temp->bus;
|
| 293 |
|
|
rc = pci_visit_dev(&configure_functions, &wrapped_dev, &wrapped_bus);
|
| 294 |
|
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}
|
| 295 |
|
|
return rc;
|
| 296 |
|
|
}
|
| 297 |
|
|
|
| 298 |
|
|
|
| 299 |
|
|
int cpqhp_unconfigure_device(struct pci_func* func)
|
| 300 |
|
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{
|
| 301 |
|
|
int rc = 0;
|
| 302 |
|
|
int j;
|
| 303 |
|
|
struct pci_dev_wrapped wrapped_dev;
|
| 304 |
|
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struct pci_bus_wrapped wrapped_bus;
|
| 305 |
|
|
|
| 306 |
|
|
memset(&wrapped_dev, 0, sizeof(struct pci_dev_wrapped));
|
| 307 |
|
|
memset(&wrapped_bus, 0, sizeof(struct pci_bus_wrapped));
|
| 308 |
|
|
|
| 309 |
|
|
dbg("%s: bus/dev/func = %x/%x/%x\n", __FUNCTION__, func->bus, func->device, func->function);
|
| 310 |
|
|
|
| 311 |
|
|
for (j=0; j<8 ; j++) {
|
| 312 |
|
|
struct pci_dev* temp = pci_find_slot(func->bus, (func->device << 3) | j);
|
| 313 |
|
|
if (temp) {
|
| 314 |
|
|
wrapped_dev.dev = temp;
|
| 315 |
|
|
wrapped_bus.bus = temp->bus;
|
| 316 |
|
|
rc = pci_visit_dev(&unconfigure_functions_phase1, &wrapped_dev, &wrapped_bus);
|
| 317 |
|
|
if (rc)
|
| 318 |
|
|
break;
|
| 319 |
|
|
|
| 320 |
|
|
rc = pci_visit_dev(&unconfigure_functions_phase2, &wrapped_dev, &wrapped_bus);
|
| 321 |
|
|
if (rc)
|
| 322 |
|
|
break;
|
| 323 |
|
|
}
|
| 324 |
|
|
}
|
| 325 |
|
|
return rc;
|
| 326 |
|
|
}
|
| 327 |
|
|
|
| 328 |
|
|
static int PCI_RefinedAccessConfig(struct pci_ops *ops, u8 bus, u8 device, u8 function, u8 offset, u32 *value)
|
| 329 |
|
|
{
|
| 330 |
|
|
u32 vendID = 0;
|
| 331 |
|
|
|
| 332 |
|
|
if (pci_read_config_dword_nodev (ops, bus, device, function, PCI_VENDOR_ID, &vendID) == -1)
|
| 333 |
|
|
return -1;
|
| 334 |
|
|
if (vendID == 0xffffffff)
|
| 335 |
|
|
return -1;
|
| 336 |
|
|
return pci_read_config_dword_nodev (ops, bus, device, function, offset, value);
|
| 337 |
|
|
}
|
| 338 |
|
|
|
| 339 |
|
|
|
| 340 |
|
|
/*
|
| 341 |
|
|
* cpqhp_set_irq
|
| 342 |
|
|
*
|
| 343 |
|
|
* @bus_num: bus number of PCI device
|
| 344 |
|
|
* @dev_num: device number of PCI device
|
| 345 |
|
|
* @slot: pointer to u8 where slot number will be returned
|
| 346 |
|
|
*/
|
| 347 |
|
|
int cpqhp_set_irq (u8 bus_num, u8 dev_num, u8 int_pin, u8 irq_num)
|
| 348 |
|
|
{
|
| 349 |
|
|
int rc;
|
| 350 |
|
|
u16 temp_word;
|
| 351 |
|
|
struct pci_dev fakedev;
|
| 352 |
|
|
struct pci_bus fakebus;
|
| 353 |
|
|
|
| 354 |
|
|
fakedev.devfn = dev_num << 3;
|
| 355 |
|
|
fakedev.bus = &fakebus;
|
| 356 |
|
|
fakebus.number = bus_num;
|
| 357 |
|
|
dbg("%s: dev %d, bus %d, pin %d, num %d\n",
|
| 358 |
|
|
__FUNCTION__, dev_num, bus_num, int_pin, irq_num);
|
| 359 |
|
|
rc = pcibios_set_irq_routing(&fakedev, int_pin - 0x0a, irq_num);
|
| 360 |
|
|
dbg("%s:rc %d\n", __FUNCTION__, rc);
|
| 361 |
|
|
if (!rc)
|
| 362 |
|
|
return !rc;
|
| 363 |
|
|
|
| 364 |
|
|
// set the Edge Level Control Register (ELCR)
|
| 365 |
|
|
temp_word = inb(0x4d0);
|
| 366 |
|
|
temp_word |= inb(0x4d1) << 8;
|
| 367 |
|
|
|
| 368 |
|
|
temp_word |= 0x01 << irq_num;
|
| 369 |
|
|
|
| 370 |
|
|
// This should only be for x86 as it sets the Edge Level Control Register
|
| 371 |
|
|
outb((u8) (temp_word & 0xFF), 0x4d0);
|
| 372 |
|
|
outb((u8) ((temp_word & 0xFF00) >> 8), 0x4d1);
|
| 373 |
|
|
|
| 374 |
|
|
return 0;
|
| 375 |
|
|
}
|
| 376 |
|
|
|
| 377 |
|
|
|
| 378 |
|
|
/*
|
| 379 |
|
|
* WTF??? This function isn't in the code, yet a function calls it, but the
|
| 380 |
|
|
* compiler optimizes it away? strange. Here as a placeholder to keep the
|
| 381 |
|
|
* compiler happy.
|
| 382 |
|
|
*/
|
| 383 |
|
|
static int PCI_ScanBusNonBridge (u8 bus, u8 device)
|
| 384 |
|
|
{
|
| 385 |
|
|
return 0;
|
| 386 |
|
|
}
|
| 387 |
|
|
|
| 388 |
|
|
static int PCI_ScanBusForNonBridge(struct controller *ctrl, u8 bus_num, u8 * dev_num)
|
| 389 |
|
|
{
|
| 390 |
|
|
u8 tdevice;
|
| 391 |
|
|
u32 work;
|
| 392 |
|
|
u8 tbus;
|
| 393 |
|
|
|
| 394 |
|
|
for (tdevice = 0; tdevice < 0x100; tdevice++) {
|
| 395 |
|
|
//Scan for access first
|
| 396 |
|
|
if (PCI_RefinedAccessConfig(ctrl->pci_ops, bus_num, tdevice >> 3, tdevice & 0x7, 0x08, &work) == -1)
|
| 397 |
|
|
continue;
|
| 398 |
|
|
dbg("Looking for nonbridge bus_num %d dev_num %d\n", bus_num, tdevice);
|
| 399 |
|
|
//Yep we got one. Not a bridge ?
|
| 400 |
|
|
if ((work >> 8) != PCI_TO_PCI_BRIDGE_CLASS) {
|
| 401 |
|
|
*dev_num = tdevice;
|
| 402 |
|
|
dbg("found it !\n");
|
| 403 |
|
|
return 0;
|
| 404 |
|
|
}
|
| 405 |
|
|
}
|
| 406 |
|
|
for (tdevice = 0; tdevice < 0x100; tdevice++) {
|
| 407 |
|
|
//Scan for access first
|
| 408 |
|
|
if (PCI_RefinedAccessConfig(ctrl->pci_ops, bus_num, tdevice >> 3, tdevice & 0x7, 0x08, &work) == -1)
|
| 409 |
|
|
continue;
|
| 410 |
|
|
dbg("Looking for bridge bus_num %d dev_num %d\n", bus_num, tdevice);
|
| 411 |
|
|
//Yep we got one. bridge ?
|
| 412 |
|
|
if ((work >> 8) == PCI_TO_PCI_BRIDGE_CLASS) {
|
| 413 |
|
|
pci_read_config_byte_nodev (ctrl->pci_ops, tbus, tdevice, 0, PCI_SECONDARY_BUS, &tbus);
|
| 414 |
|
|
dbg("Recurse on bus_num %d tdevice %d\n", tbus, tdevice);
|
| 415 |
|
|
if (PCI_ScanBusNonBridge(tbus, tdevice) == 0)
|
| 416 |
|
|
return 0;
|
| 417 |
|
|
}
|
| 418 |
|
|
}
|
| 419 |
|
|
|
| 420 |
|
|
return -1;
|
| 421 |
|
|
}
|
| 422 |
|
|
|
| 423 |
|
|
|
| 424 |
|
|
static int PCI_GetBusDevHelper(struct controller *ctrl, u8 *bus_num, u8 *dev_num, u8 slot, u8 nobridge)
|
| 425 |
|
|
{
|
| 426 |
|
|
struct irq_routing_table *PCIIRQRoutingInfoLength;
|
| 427 |
|
|
long len;
|
| 428 |
|
|
long loop;
|
| 429 |
|
|
u32 work;
|
| 430 |
|
|
|
| 431 |
|
|
u8 tbus, tdevice, tslot;
|
| 432 |
|
|
|
| 433 |
|
|
PCIIRQRoutingInfoLength = pcibios_get_irq_routing_table();
|
| 434 |
|
|
|
| 435 |
|
|
len = (PCIIRQRoutingInfoLength->size -
|
| 436 |
|
|
sizeof(struct irq_routing_table)) / sizeof(struct irq_info);
|
| 437 |
|
|
// Make sure I got at least one entry
|
| 438 |
|
|
if (len == 0) {
|
| 439 |
|
|
if (PCIIRQRoutingInfoLength != NULL)
|
| 440 |
|
|
kfree(PCIIRQRoutingInfoLength );
|
| 441 |
|
|
return -1;
|
| 442 |
|
|
}
|
| 443 |
|
|
|
| 444 |
|
|
for (loop = 0; loop < len; ++loop) {
|
| 445 |
|
|
tbus = PCIIRQRoutingInfoLength->slots[loop].bus;
|
| 446 |
|
|
tdevice = PCIIRQRoutingInfoLength->slots[loop].devfn;
|
| 447 |
|
|
tslot = PCIIRQRoutingInfoLength->slots[loop].slot;
|
| 448 |
|
|
|
| 449 |
|
|
if (tslot == slot) {
|
| 450 |
|
|
*bus_num = tbus;
|
| 451 |
|
|
*dev_num = tdevice;
|
| 452 |
|
|
pci_read_config_dword_nodev (ctrl->pci_ops, *bus_num, *dev_num >> 3, *dev_num & 0x7, PCI_VENDOR_ID, &work);
|
| 453 |
|
|
if (!nobridge || (work == 0xffffffff)) {
|
| 454 |
|
|
if (PCIIRQRoutingInfoLength != NULL)
|
| 455 |
|
|
kfree(PCIIRQRoutingInfoLength );
|
| 456 |
|
|
return 0;
|
| 457 |
|
|
}
|
| 458 |
|
|
|
| 459 |
|
|
dbg("bus_num %d dev_num %d func_num %d\n", *bus_num, *dev_num >> 3, *dev_num & 0x7);
|
| 460 |
|
|
pci_read_config_dword_nodev (ctrl->pci_ops, *bus_num, *dev_num >> 3, *dev_num & 0x7, PCI_CLASS_REVISION, &work);
|
| 461 |
|
|
dbg("work >> 8 (%x) = BRIDGE (%x)\n", work >> 8, PCI_TO_PCI_BRIDGE_CLASS);
|
| 462 |
|
|
|
| 463 |
|
|
if ((work >> 8) == PCI_TO_PCI_BRIDGE_CLASS) {
|
| 464 |
|
|
pci_read_config_byte_nodev (ctrl->pci_ops, *bus_num, *dev_num >> 3, *dev_num & 0x7, PCI_SECONDARY_BUS, &tbus);
|
| 465 |
|
|
dbg("Scan bus for Non Bridge: bus %d\n", tbus);
|
| 466 |
|
|
if (PCI_ScanBusForNonBridge(ctrl, tbus, dev_num) == 0) {
|
| 467 |
|
|
*bus_num = tbus;
|
| 468 |
|
|
if (PCIIRQRoutingInfoLength != NULL)
|
| 469 |
|
|
kfree(PCIIRQRoutingInfoLength );
|
| 470 |
|
|
return 0;
|
| 471 |
|
|
}
|
| 472 |
|
|
} else {
|
| 473 |
|
|
if (PCIIRQRoutingInfoLength != NULL)
|
| 474 |
|
|
kfree(PCIIRQRoutingInfoLength );
|
| 475 |
|
|
return 0;
|
| 476 |
|
|
}
|
| 477 |
|
|
|
| 478 |
|
|
}
|
| 479 |
|
|
}
|
| 480 |
|
|
if (PCIIRQRoutingInfoLength != NULL)
|
| 481 |
|
|
kfree(PCIIRQRoutingInfoLength );
|
| 482 |
|
|
return -1;
|
| 483 |
|
|
}
|
| 484 |
|
|
|
| 485 |
|
|
|
| 486 |
|
|
int cpqhp_get_bus_dev (struct controller *ctrl, u8 * bus_num, u8 * dev_num, u8 slot)
|
| 487 |
|
|
{
|
| 488 |
|
|
return PCI_GetBusDevHelper(ctrl, bus_num, dev_num, slot, 0); //plain (bridges allowed)
|
| 489 |
|
|
}
|
| 490 |
|
|
|
| 491 |
|
|
|
| 492 |
|
|
/* More PCI configuration routines; this time centered around hotplug controller */
|
| 493 |
|
|
|
| 494 |
|
|
|
| 495 |
|
|
/*
|
| 496 |
|
|
* cpqhp_save_config
|
| 497 |
|
|
*
|
| 498 |
|
|
* Reads configuration for all slots in a PCI bus and saves info.
|
| 499 |
|
|
*
|
| 500 |
|
|
* Note: For non-hot plug busses, the slot # saved is the device #
|
| 501 |
|
|
*
|
| 502 |
|
|
* returns 0 if success
|
| 503 |
|
|
*/
|
| 504 |
|
|
int cpqhp_save_config(struct controller *ctrl, int busnumber, int is_hot_plug)
|
| 505 |
|
|
{
|
| 506 |
|
|
long rc;
|
| 507 |
|
|
u8 class_code;
|
| 508 |
|
|
u8 header_type;
|
| 509 |
|
|
u32 ID;
|
| 510 |
|
|
u8 secondary_bus;
|
| 511 |
|
|
struct pci_func *new_slot;
|
| 512 |
|
|
int sub_bus;
|
| 513 |
|
|
int FirstSupported;
|
| 514 |
|
|
int LastSupported;
|
| 515 |
|
|
int max_functions;
|
| 516 |
|
|
int function;
|
| 517 |
|
|
u8 DevError;
|
| 518 |
|
|
int device = 0;
|
| 519 |
|
|
int cloop = 0;
|
| 520 |
|
|
int stop_it;
|
| 521 |
|
|
int index;
|
| 522 |
|
|
|
| 523 |
|
|
// Decide which slots are supported
|
| 524 |
|
|
|
| 525 |
|
|
if (is_hot_plug) {
|
| 526 |
|
|
//*********************************
|
| 527 |
|
|
// is_hot_plug is the slot mask
|
| 528 |
|
|
//*********************************
|
| 529 |
|
|
FirstSupported = is_hot_plug >> 4;
|
| 530 |
|
|
LastSupported = FirstSupported + (is_hot_plug & 0x0F) - 1;
|
| 531 |
|
|
} else {
|
| 532 |
|
|
FirstSupported = 0;
|
| 533 |
|
|
LastSupported = 0x1F;
|
| 534 |
|
|
}
|
| 535 |
|
|
|
| 536 |
|
|
// Save PCI configuration space for all devices in supported slots
|
| 537 |
|
|
|
| 538 |
|
|
for (device = FirstSupported; device <= LastSupported; device++) {
|
| 539 |
|
|
ID = 0xFFFFFFFF;
|
| 540 |
|
|
rc = pci_read_config_dword_nodev (ctrl->pci_ops, busnumber, device, 0, PCI_VENDOR_ID, &ID);
|
| 541 |
|
|
|
| 542 |
|
|
if (ID != 0xFFFFFFFF) { // device in slot
|
| 543 |
|
|
rc = pci_read_config_byte_nodev (ctrl->pci_ops, busnumber, device, 0, 0x0B, &class_code);
|
| 544 |
|
|
if (rc)
|
| 545 |
|
|
return rc;
|
| 546 |
|
|
|
| 547 |
|
|
rc = pci_read_config_byte_nodev (ctrl->pci_ops, busnumber, device, 0, PCI_HEADER_TYPE, &header_type);
|
| 548 |
|
|
if (rc)
|
| 549 |
|
|
return rc;
|
| 550 |
|
|
|
| 551 |
|
|
// If multi-function device, set max_functions to 8
|
| 552 |
|
|
if (header_type & 0x80)
|
| 553 |
|
|
max_functions = 8;
|
| 554 |
|
|
else
|
| 555 |
|
|
max_functions = 1;
|
| 556 |
|
|
|
| 557 |
|
|
function = 0;
|
| 558 |
|
|
|
| 559 |
|
|
do {
|
| 560 |
|
|
DevError = 0;
|
| 561 |
|
|
|
| 562 |
|
|
if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { // P-P Bridge
|
| 563 |
|
|
// Recurse the subordinate bus
|
| 564 |
|
|
// get the subordinate bus number
|
| 565 |
|
|
rc = pci_read_config_byte_nodev (ctrl->pci_ops, busnumber, device, function, PCI_SECONDARY_BUS, &secondary_bus);
|
| 566 |
|
|
if (rc) {
|
| 567 |
|
|
return rc;
|
| 568 |
|
|
} else {
|
| 569 |
|
|
sub_bus = (int) secondary_bus;
|
| 570 |
|
|
|
| 571 |
|
|
// Save secondary bus cfg spc
|
| 572 |
|
|
// with this recursive call.
|
| 573 |
|
|
rc = cpqhp_save_config(ctrl, sub_bus, 0);
|
| 574 |
|
|
|
| 575 |
|
|
if (rc)
|
| 576 |
|
|
return rc;
|
| 577 |
|
|
}
|
| 578 |
|
|
}
|
| 579 |
|
|
|
| 580 |
|
|
index = 0;
|
| 581 |
|
|
new_slot = cpqhp_slot_find(busnumber, device, index++);
|
| 582 |
|
|
while (new_slot &&
|
| 583 |
|
|
(new_slot->function != (u8) function))
|
| 584 |
|
|
new_slot = cpqhp_slot_find(busnumber, device, index++);
|
| 585 |
|
|
|
| 586 |
|
|
if (!new_slot) {
|
| 587 |
|
|
// Setup slot structure.
|
| 588 |
|
|
new_slot = cpqhp_slot_create(busnumber);
|
| 589 |
|
|
|
| 590 |
|
|
if (new_slot == NULL)
|
| 591 |
|
|
return(1);
|
| 592 |
|
|
}
|
| 593 |
|
|
|
| 594 |
|
|
new_slot->bus = (u8) busnumber;
|
| 595 |
|
|
new_slot->device = (u8) device;
|
| 596 |
|
|
new_slot->function = (u8) function;
|
| 597 |
|
|
new_slot->is_a_board = 1;
|
| 598 |
|
|
new_slot->switch_save = 0x10;
|
| 599 |
|
|
// In case of unsupported board
|
| 600 |
|
|
new_slot->status = DevError;
|
| 601 |
|
|
new_slot->pci_dev = pci_find_slot(new_slot->bus, (new_slot->device << 3) | new_slot->function);
|
| 602 |
|
|
|
| 603 |
|
|
for (cloop = 0; cloop < 0x20; cloop++) {
|
| 604 |
|
|
rc = pci_read_config_dword_nodev (ctrl->pci_ops, busnumber, device, function, cloop << 2, (u32 *) & (new_slot-> config_space [cloop]));
|
| 605 |
|
|
if (rc)
|
| 606 |
|
|
return rc;
|
| 607 |
|
|
}
|
| 608 |
|
|
|
| 609 |
|
|
function++;
|
| 610 |
|
|
|
| 611 |
|
|
stop_it = 0;
|
| 612 |
|
|
|
| 613 |
|
|
// this loop skips to the next present function
|
| 614 |
|
|
// reading in Class Code and Header type.
|
| 615 |
|
|
|
| 616 |
|
|
while ((function < max_functions)&&(!stop_it)) {
|
| 617 |
|
|
rc = pci_read_config_dword_nodev (ctrl->pci_ops, busnumber, device, function, PCI_VENDOR_ID, &ID);
|
| 618 |
|
|
if (ID == 0xFFFFFFFF) { // nothing there.
|
| 619 |
|
|
function++;
|
| 620 |
|
|
} else { // Something there
|
| 621 |
|
|
rc = pci_read_config_byte_nodev (ctrl->pci_ops, busnumber, device, function, 0x0B, &class_code);
|
| 622 |
|
|
if (rc)
|
| 623 |
|
|
return rc;
|
| 624 |
|
|
|
| 625 |
|
|
rc = pci_read_config_byte_nodev (ctrl->pci_ops, busnumber, device, function, PCI_HEADER_TYPE, &header_type);
|
| 626 |
|
|
if (rc)
|
| 627 |
|
|
return rc;
|
| 628 |
|
|
|
| 629 |
|
|
stop_it++;
|
| 630 |
|
|
}
|
| 631 |
|
|
}
|
| 632 |
|
|
|
| 633 |
|
|
} while (function < max_functions);
|
| 634 |
|
|
} // End of IF (device in slot?)
|
| 635 |
|
|
else if (is_hot_plug) {
|
| 636 |
|
|
// Setup slot structure with entry for empty slot
|
| 637 |
|
|
new_slot = cpqhp_slot_create(busnumber);
|
| 638 |
|
|
|
| 639 |
|
|
if (new_slot == NULL) {
|
| 640 |
|
|
return(1);
|
| 641 |
|
|
}
|
| 642 |
|
|
|
| 643 |
|
|
new_slot->bus = (u8) busnumber;
|
| 644 |
|
|
new_slot->device = (u8) device;
|
| 645 |
|
|
new_slot->function = 0;
|
| 646 |
|
|
new_slot->is_a_board = 0;
|
| 647 |
|
|
new_slot->presence_save = 0;
|
| 648 |
|
|
new_slot->switch_save = 0;
|
| 649 |
|
|
}
|
| 650 |
|
|
} // End of FOR loop
|
| 651 |
|
|
|
| 652 |
|
|
return(0);
|
| 653 |
|
|
}
|
| 654 |
|
|
|
| 655 |
|
|
|
| 656 |
|
|
/*
|
| 657 |
|
|
* cpqhp_save_slot_config
|
| 658 |
|
|
*
|
| 659 |
|
|
* Saves configuration info for all PCI devices in a given slot
|
| 660 |
|
|
* including subordinate busses.
|
| 661 |
|
|
*
|
| 662 |
|
|
* returns 0 if success
|
| 663 |
|
|
*/
|
| 664 |
|
|
int cpqhp_save_slot_config (struct controller *ctrl, struct pci_func * new_slot)
|
| 665 |
|
|
{
|
| 666 |
|
|
long rc;
|
| 667 |
|
|
u8 class_code;
|
| 668 |
|
|
u8 header_type;
|
| 669 |
|
|
u32 ID;
|
| 670 |
|
|
u8 secondary_bus;
|
| 671 |
|
|
int sub_bus;
|
| 672 |
|
|
int max_functions;
|
| 673 |
|
|
int function;
|
| 674 |
|
|
int cloop = 0;
|
| 675 |
|
|
int stop_it;
|
| 676 |
|
|
|
| 677 |
|
|
ID = 0xFFFFFFFF;
|
| 678 |
|
|
|
| 679 |
|
|
pci_read_config_dword_nodev (ctrl->pci_ops, new_slot->bus, new_slot->device, 0, PCI_VENDOR_ID, &ID);
|
| 680 |
|
|
|
| 681 |
|
|
if (ID != 0xFFFFFFFF) { // device in slot
|
| 682 |
|
|
pci_read_config_byte_nodev (ctrl->pci_ops, new_slot->bus, new_slot->device, 0, 0x0B, &class_code);
|
| 683 |
|
|
|
| 684 |
|
|
pci_read_config_byte_nodev (ctrl->pci_ops, new_slot->bus, new_slot->device, 0, PCI_HEADER_TYPE, &header_type);
|
| 685 |
|
|
|
| 686 |
|
|
if (header_type & 0x80) // Multi-function device
|
| 687 |
|
|
max_functions = 8;
|
| 688 |
|
|
else
|
| 689 |
|
|
max_functions = 1;
|
| 690 |
|
|
|
| 691 |
|
|
function = 0;
|
| 692 |
|
|
|
| 693 |
|
|
do {
|
| 694 |
|
|
if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { // PCI-PCI Bridge
|
| 695 |
|
|
// Recurse the subordinate bus
|
| 696 |
|
|
pci_read_config_byte_nodev (ctrl->pci_ops, new_slot->bus, new_slot->device, function, PCI_SECONDARY_BUS, &secondary_bus);
|
| 697 |
|
|
|
| 698 |
|
|
sub_bus = (int) secondary_bus;
|
| 699 |
|
|
|
| 700 |
|
|
// Save the config headers for the secondary bus.
|
| 701 |
|
|
rc = cpqhp_save_config(ctrl, sub_bus, 0);
|
| 702 |
|
|
|
| 703 |
|
|
if (rc)
|
| 704 |
|
|
return(rc);
|
| 705 |
|
|
|
| 706 |
|
|
} // End of IF
|
| 707 |
|
|
|
| 708 |
|
|
new_slot->status = 0;
|
| 709 |
|
|
|
| 710 |
|
|
for (cloop = 0; cloop < 0x20; cloop++) {
|
| 711 |
|
|
pci_read_config_dword_nodev (ctrl->pci_ops, new_slot->bus, new_slot->device, function, cloop << 2, (u32 *) & (new_slot-> config_space [cloop]));
|
| 712 |
|
|
}
|
| 713 |
|
|
|
| 714 |
|
|
function++;
|
| 715 |
|
|
|
| 716 |
|
|
stop_it = 0;
|
| 717 |
|
|
|
| 718 |
|
|
// this loop skips to the next present function
|
| 719 |
|
|
// reading in the Class Code and the Header type.
|
| 720 |
|
|
|
| 721 |
|
|
while ((function < max_functions) && (!stop_it)) {
|
| 722 |
|
|
pci_read_config_dword_nodev (ctrl->pci_ops, new_slot->bus, new_slot->device, function, PCI_VENDOR_ID, &ID);
|
| 723 |
|
|
|
| 724 |
|
|
if (ID == 0xFFFFFFFF) { // nothing there.
|
| 725 |
|
|
function++;
|
| 726 |
|
|
} else { // Something there
|
| 727 |
|
|
pci_read_config_byte_nodev (ctrl->pci_ops, new_slot->bus, new_slot->device, function, 0x0B, &class_code);
|
| 728 |
|
|
|
| 729 |
|
|
pci_read_config_byte_nodev (ctrl->pci_ops, new_slot->bus, new_slot->device, function, PCI_HEADER_TYPE, &header_type);
|
| 730 |
|
|
|
| 731 |
|
|
stop_it++;
|
| 732 |
|
|
}
|
| 733 |
|
|
}
|
| 734 |
|
|
|
| 735 |
|
|
} while (function < max_functions);
|
| 736 |
|
|
} // End of IF (device in slot?)
|
| 737 |
|
|
else {
|
| 738 |
|
|
return(2);
|
| 739 |
|
|
}
|
| 740 |
|
|
|
| 741 |
|
|
return(0);
|
| 742 |
|
|
}
|
| 743 |
|
|
|
| 744 |
|
|
|
| 745 |
|
|
/*
|
| 746 |
|
|
* cpqhp_save_base_addr_length
|
| 747 |
|
|
*
|
| 748 |
|
|
* Saves the length of all base address registers for the
|
| 749 |
|
|
* specified slot. this is for hot plug REPLACE
|
| 750 |
|
|
*
|
| 751 |
|
|
* returns 0 if success
|
| 752 |
|
|
*/
|
| 753 |
|
|
int cpqhp_save_base_addr_length(struct controller *ctrl, struct pci_func * func)
|
| 754 |
|
|
{
|
| 755 |
|
|
u8 cloop;
|
| 756 |
|
|
u8 header_type;
|
| 757 |
|
|
u8 secondary_bus;
|
| 758 |
|
|
u8 type;
|
| 759 |
|
|
int sub_bus;
|
| 760 |
|
|
u32 temp_register;
|
| 761 |
|
|
u32 base;
|
| 762 |
|
|
u32 rc;
|
| 763 |
|
|
struct pci_func *next;
|
| 764 |
|
|
int index = 0;
|
| 765 |
|
|
|
| 766 |
|
|
func = cpqhp_slot_find(func->bus, func->device, index++);
|
| 767 |
|
|
|
| 768 |
|
|
while (func != NULL) {
|
| 769 |
|
|
|
| 770 |
|
|
// Check for Bridge
|
| 771 |
|
|
pci_read_config_byte_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_HEADER_TYPE, &header_type);
|
| 772 |
|
|
|
| 773 |
|
|
if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) {
|
| 774 |
|
|
// PCI-PCI Bridge
|
| 775 |
|
|
pci_read_config_byte_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_SECONDARY_BUS, &secondary_bus);
|
| 776 |
|
|
|
| 777 |
|
|
sub_bus = (int) secondary_bus;
|
| 778 |
|
|
|
| 779 |
|
|
next = cpqhp_slot_list[sub_bus];
|
| 780 |
|
|
|
| 781 |
|
|
while (next != NULL) {
|
| 782 |
|
|
rc = cpqhp_save_base_addr_length(ctrl, next);
|
| 783 |
|
|
|
| 784 |
|
|
if (rc)
|
| 785 |
|
|
return(rc);
|
| 786 |
|
|
|
| 787 |
|
|
next = next->next;
|
| 788 |
|
|
}
|
| 789 |
|
|
|
| 790 |
|
|
//FIXME: this loop is duplicated in the non-bridge case. The two could be rolled together
|
| 791 |
|
|
// Figure out IO and memory base lengths
|
| 792 |
|
|
for (cloop = 0x10; cloop <= 0x14; cloop += 4) {
|
| 793 |
|
|
temp_register = 0xFFFFFFFF;
|
| 794 |
|
|
pci_write_config_dword_nodev(ctrl->pci_ops, func->bus, func->device, func->function, cloop, temp_register);
|
| 795 |
|
|
pci_read_config_dword_nodev (ctrl->pci_ops, func->bus, func->device, func->function, cloop, &base);
|
| 796 |
|
|
|
| 797 |
|
|
if (base) { // If this register is implemented
|
| 798 |
|
|
if (base & 0x01L) {
|
| 799 |
|
|
// IO base
|
| 800 |
|
|
// set base = amount of IO space requested
|
| 801 |
|
|
base = base & 0xFFFFFFFE;
|
| 802 |
|
|
base = (~base) + 1;
|
| 803 |
|
|
|
| 804 |
|
|
type = 1;
|
| 805 |
|
|
} else {
|
| 806 |
|
|
// memory base
|
| 807 |
|
|
base = base & 0xFFFFFFF0;
|
| 808 |
|
|
base = (~base) + 1;
|
| 809 |
|
|
|
| 810 |
|
|
type = 0;
|
| 811 |
|
|
}
|
| 812 |
|
|
} else {
|
| 813 |
|
|
base = 0x0L;
|
| 814 |
|
|
type = 0;
|
| 815 |
|
|
}
|
| 816 |
|
|
|
| 817 |
|
|
// Save information in slot structure
|
| 818 |
|
|
func->base_length[(cloop - 0x10) >> 2] =
|
| 819 |
|
|
base;
|
| 820 |
|
|
func->base_type[(cloop - 0x10) >> 2] = type;
|
| 821 |
|
|
|
| 822 |
|
|
} // End of base register loop
|
| 823 |
|
|
|
| 824 |
|
|
|
| 825 |
|
|
} else if ((header_type & 0x7F) == 0x00) { // PCI-PCI Bridge
|
| 826 |
|
|
// Figure out IO and memory base lengths
|
| 827 |
|
|
for (cloop = 0x10; cloop <= 0x24; cloop += 4) {
|
| 828 |
|
|
temp_register = 0xFFFFFFFF;
|
| 829 |
|
|
pci_write_config_dword_nodev(ctrl->pci_ops, func->bus, func->device, func->function, cloop, temp_register);
|
| 830 |
|
|
pci_read_config_dword_nodev (ctrl->pci_ops, func->bus, func->device, func->function, cloop, &base);
|
| 831 |
|
|
|
| 832 |
|
|
if (base) { // If this register is implemented
|
| 833 |
|
|
if (base & 0x01L) {
|
| 834 |
|
|
// IO base
|
| 835 |
|
|
// base = amount of IO space requested
|
| 836 |
|
|
base = base & 0xFFFFFFFE;
|
| 837 |
|
|
base = (~base) + 1;
|
| 838 |
|
|
|
| 839 |
|
|
type = 1;
|
| 840 |
|
|
} else {
|
| 841 |
|
|
// memory base
|
| 842 |
|
|
// base = amount of memory space requested
|
| 843 |
|
|
base = base & 0xFFFFFFF0;
|
| 844 |
|
|
base = (~base) + 1;
|
| 845 |
|
|
|
| 846 |
|
|
type = 0;
|
| 847 |
|
|
}
|
| 848 |
|
|
} else {
|
| 849 |
|
|
base = 0x0L;
|
| 850 |
|
|
type = 0;
|
| 851 |
|
|
}
|
| 852 |
|
|
|
| 853 |
|
|
// Save information in slot structure
|
| 854 |
|
|
func->base_length[(cloop - 0x10) >> 2] = base;
|
| 855 |
|
|
func->base_type[(cloop - 0x10) >> 2] = type;
|
| 856 |
|
|
|
| 857 |
|
|
} // End of base register loop
|
| 858 |
|
|
|
| 859 |
|
|
} else { // Some other unknown header type
|
| 860 |
|
|
}
|
| 861 |
|
|
|
| 862 |
|
|
// find the next device in this slot
|
| 863 |
|
|
func = cpqhp_slot_find(func->bus, func->device, index++);
|
| 864 |
|
|
}
|
| 865 |
|
|
|
| 866 |
|
|
return(0);
|
| 867 |
|
|
}
|
| 868 |
|
|
|
| 869 |
|
|
|
| 870 |
|
|
/*
|
| 871 |
|
|
* cpqhp_save_used_resources
|
| 872 |
|
|
*
|
| 873 |
|
|
* Stores used resource information for existing boards. this is
|
| 874 |
|
|
* for boards that were in the system when this driver was loaded.
|
| 875 |
|
|
* this function is for hot plug ADD
|
| 876 |
|
|
*
|
| 877 |
|
|
* returns 0 if success
|
| 878 |
|
|
*/
|
| 879 |
|
|
int cpqhp_save_used_resources (struct controller *ctrl, struct pci_func * func)
|
| 880 |
|
|
{
|
| 881 |
|
|
u8 cloop;
|
| 882 |
|
|
u8 header_type;
|
| 883 |
|
|
u8 secondary_bus;
|
| 884 |
|
|
u8 temp_byte;
|
| 885 |
|
|
u8 b_base;
|
| 886 |
|
|
u8 b_length;
|
| 887 |
|
|
u16 command;
|
| 888 |
|
|
u16 save_command;
|
| 889 |
|
|
u16 w_base;
|
| 890 |
|
|
u16 w_length;
|
| 891 |
|
|
u32 temp_register;
|
| 892 |
|
|
u32 save_base;
|
| 893 |
|
|
u32 base;
|
| 894 |
|
|
int index = 0;
|
| 895 |
|
|
struct pci_resource *mem_node;
|
| 896 |
|
|
struct pci_resource *p_mem_node;
|
| 897 |
|
|
struct pci_resource *io_node;
|
| 898 |
|
|
struct pci_resource *bus_node;
|
| 899 |
|
|
|
| 900 |
|
|
func = cpqhp_slot_find(func->bus, func->device, index++);
|
| 901 |
|
|
|
| 902 |
|
|
while ((func != NULL) && func->is_a_board) {
|
| 903 |
|
|
// Save the command register
|
| 904 |
|
|
pci_read_config_word_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_COMMAND, &save_command);
|
| 905 |
|
|
|
| 906 |
|
|
// disable card
|
| 907 |
|
|
command = 0x00;
|
| 908 |
|
|
pci_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_COMMAND, command);
|
| 909 |
|
|
|
| 910 |
|
|
// Check for Bridge
|
| 911 |
|
|
pci_read_config_byte_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_HEADER_TYPE, &header_type);
|
| 912 |
|
|
|
| 913 |
|
|
if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { // PCI-PCI Bridge
|
| 914 |
|
|
// Clear Bridge Control Register
|
| 915 |
|
|
command = 0x00;
|
| 916 |
|
|
pci_write_config_word_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_BRIDGE_CONTROL, command);
|
| 917 |
|
|
|
| 918 |
|
|
pci_read_config_byte_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_SECONDARY_BUS, &secondary_bus);
|
| 919 |
|
|
|
| 920 |
|
|
pci_read_config_byte_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_SUBORDINATE_BUS, &temp_byte);
|
| 921 |
|
|
|
| 922 |
|
|
bus_node =(struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
|
| 923 |
|
|
if (!bus_node)
|
| 924 |
|
|
return -ENOMEM;
|
| 925 |
|
|
|
| 926 |
|
|
bus_node->base = secondary_bus;
|
| 927 |
|
|
bus_node->length = temp_byte - secondary_bus + 1;
|
| 928 |
|
|
|
| 929 |
|
|
bus_node->next = func->bus_head;
|
| 930 |
|
|
func->bus_head = bus_node;
|
| 931 |
|
|
|
| 932 |
|
|
// Save IO base and Limit registers
|
| 933 |
|
|
pci_read_config_byte_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_IO_BASE, &b_base);
|
| 934 |
|
|
|
| 935 |
|
|
pci_read_config_byte_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_IO_LIMIT, &b_length);
|
| 936 |
|
|
|
| 937 |
|
|
if ((b_base <= b_length) && (save_command & 0x01)) {
|
| 938 |
|
|
io_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
|
| 939 |
|
|
if (!io_node)
|
| 940 |
|
|
return -ENOMEM;
|
| 941 |
|
|
|
| 942 |
|
|
io_node->base = (b_base & 0xF0) << 8;
|
| 943 |
|
|
io_node->length = (b_length - b_base + 0x10) << 8;
|
| 944 |
|
|
|
| 945 |
|
|
io_node->next = func->io_head;
|
| 946 |
|
|
func->io_head = io_node;
|
| 947 |
|
|
}
|
| 948 |
|
|
// Save memory base and Limit registers
|
| 949 |
|
|
pci_read_config_word_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_MEMORY_BASE, &w_base);
|
| 950 |
|
|
|
| 951 |
|
|
pci_read_config_word_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_MEMORY_LIMIT, &w_length);
|
| 952 |
|
|
|
| 953 |
|
|
if ((w_base <= w_length) && (save_command & 0x02)) {
|
| 954 |
|
|
mem_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
|
| 955 |
|
|
if (!mem_node)
|
| 956 |
|
|
return -ENOMEM;
|
| 957 |
|
|
|
| 958 |
|
|
mem_node->base = w_base << 16;
|
| 959 |
|
|
mem_node->length = (w_length - w_base + 0x10) << 16;
|
| 960 |
|
|
|
| 961 |
|
|
mem_node->next = func->mem_head;
|
| 962 |
|
|
func->mem_head = mem_node;
|
| 963 |
|
|
}
|
| 964 |
|
|
// Save prefetchable memory base and Limit registers
|
| 965 |
|
|
pci_read_config_word_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_PREF_MEMORY_BASE, &w_base);
|
| 966 |
|
|
|
| 967 |
|
|
pci_read_config_word_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_PREF_MEMORY_LIMIT, &w_length);
|
| 968 |
|
|
|
| 969 |
|
|
if ((w_base <= w_length) && (save_command & 0x02)) {
|
| 970 |
|
|
p_mem_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
|
| 971 |
|
|
if (!p_mem_node)
|
| 972 |
|
|
return -ENOMEM;
|
| 973 |
|
|
|
| 974 |
|
|
p_mem_node->base = w_base << 16;
|
| 975 |
|
|
p_mem_node->length = (w_length - w_base + 0x10) << 16;
|
| 976 |
|
|
|
| 977 |
|
|
p_mem_node->next = func->p_mem_head;
|
| 978 |
|
|
func->p_mem_head = p_mem_node;
|
| 979 |
|
|
}
|
| 980 |
|
|
// Figure out IO and memory base lengths
|
| 981 |
|
|
for (cloop = 0x10; cloop <= 0x14; cloop += 4) {
|
| 982 |
|
|
pci_read_config_dword_nodev (ctrl->pci_ops, func->bus, func->device, func->function, cloop, &save_base);
|
| 983 |
|
|
|
| 984 |
|
|
temp_register = 0xFFFFFFFF;
|
| 985 |
|
|
pci_write_config_dword_nodev(ctrl->pci_ops, func->bus, func->device, func->function, cloop, temp_register);
|
| 986 |
|
|
|
| 987 |
|
|
pci_read_config_dword_nodev (ctrl->pci_ops, func->bus, func->device, func->function, cloop, &base);
|
| 988 |
|
|
|
| 989 |
|
|
temp_register = base;
|
| 990 |
|
|
|
| 991 |
|
|
if (base) { // If this register is implemented
|
| 992 |
|
|
if (((base & 0x03L) == 0x01)
|
| 993 |
|
|
&& (save_command & 0x01)) {
|
| 994 |
|
|
// IO base
|
| 995 |
|
|
// set temp_register = amount of IO space requested
|
| 996 |
|
|
temp_register = base & 0xFFFFFFFE;
|
| 997 |
|
|
temp_register = (~temp_register) + 1;
|
| 998 |
|
|
|
| 999 |
|
|
io_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
|
| 1000 |
|
|
if (!io_node)
|
| 1001 |
|
|
return -ENOMEM;
|
| 1002 |
|
|
|
| 1003 |
|
|
io_node->base =
|
| 1004 |
|
|
save_base & (~0x03L);
|
| 1005 |
|
|
io_node->length = temp_register;
|
| 1006 |
|
|
|
| 1007 |
|
|
io_node->next = func->io_head;
|
| 1008 |
|
|
func->io_head = io_node;
|
| 1009 |
|
|
} else
|
| 1010 |
|
|
if (((base & 0x0BL) == 0x08)
|
| 1011 |
|
|
&& (save_command & 0x02)) {
|
| 1012 |
|
|
// prefetchable memory base
|
| 1013 |
|
|
temp_register = base & 0xFFFFFFF0;
|
| 1014 |
|
|
temp_register = (~temp_register) + 1;
|
| 1015 |
|
|
|
| 1016 |
|
|
p_mem_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
|
| 1017 |
|
|
if (!p_mem_node)
|
| 1018 |
|
|
return -ENOMEM;
|
| 1019 |
|
|
|
| 1020 |
|
|
p_mem_node->base = save_base & (~0x0FL);
|
| 1021 |
|
|
p_mem_node->length = temp_register;
|
| 1022 |
|
|
|
| 1023 |
|
|
p_mem_node->next = func->p_mem_head;
|
| 1024 |
|
|
func->p_mem_head = p_mem_node;
|
| 1025 |
|
|
} else
|
| 1026 |
|
|
if (((base & 0x0BL) == 0x00)
|
| 1027 |
|
|
&& (save_command & 0x02)) {
|
| 1028 |
|
|
// prefetchable memory base
|
| 1029 |
|
|
temp_register = base & 0xFFFFFFF0;
|
| 1030 |
|
|
temp_register = (~temp_register) + 1;
|
| 1031 |
|
|
|
| 1032 |
|
|
mem_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
|
| 1033 |
|
|
if (!mem_node)
|
| 1034 |
|
|
return -ENOMEM;
|
| 1035 |
|
|
|
| 1036 |
|
|
mem_node->base = save_base & (~0x0FL);
|
| 1037 |
|
|
mem_node->length = temp_register;
|
| 1038 |
|
|
|
| 1039 |
|
|
mem_node->next = func->mem_head;
|
| 1040 |
|
|
func->mem_head = mem_node;
|
| 1041 |
|
|
} else
|
| 1042 |
|
|
return(1);
|
| 1043 |
|
|
}
|
| 1044 |
|
|
} // End of base register loop
|
| 1045 |
|
|
} else if ((header_type & 0x7F) == 0x00) { // Standard header
|
| 1046 |
|
|
// Figure out IO and memory base lengths
|
| 1047 |
|
|
for (cloop = 0x10; cloop <= 0x24; cloop += 4) {
|
| 1048 |
|
|
pci_read_config_dword_nodev (ctrl->pci_ops, func->bus, func->device, func->function, cloop, &save_base);
|
| 1049 |
|
|
|
| 1050 |
|
|
temp_register = 0xFFFFFFFF;
|
| 1051 |
|
|
pci_write_config_dword_nodev(ctrl->pci_ops, func->bus, func->device, func->function, cloop, temp_register);
|
| 1052 |
|
|
|
| 1053 |
|
|
pci_read_config_dword_nodev (ctrl->pci_ops, func->bus, func->device, func->function, cloop, &base);
|
| 1054 |
|
|
|
| 1055 |
|
|
temp_register = base;
|
| 1056 |
|
|
|
| 1057 |
|
|
if (base) { // If this register is implemented
|
| 1058 |
|
|
if (((base & 0x03L) == 0x01)
|
| 1059 |
|
|
&& (save_command & 0x01)) {
|
| 1060 |
|
|
// IO base
|
| 1061 |
|
|
// set temp_register = amount of IO space requested
|
| 1062 |
|
|
temp_register = base & 0xFFFFFFFE;
|
| 1063 |
|
|
temp_register = (~temp_register) + 1;
|
| 1064 |
|
|
|
| 1065 |
|
|
io_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
|
| 1066 |
|
|
if (!io_node)
|
| 1067 |
|
|
return -ENOMEM;
|
| 1068 |
|
|
|
| 1069 |
|
|
io_node->base = save_base & (~0x01L);
|
| 1070 |
|
|
io_node->length = temp_register;
|
| 1071 |
|
|
|
| 1072 |
|
|
io_node->next = func->io_head;
|
| 1073 |
|
|
func->io_head = io_node;
|
| 1074 |
|
|
} else
|
| 1075 |
|
|
if (((base & 0x0BL) == 0x08)
|
| 1076 |
|
|
&& (save_command & 0x02)) {
|
| 1077 |
|
|
// prefetchable memory base
|
| 1078 |
|
|
temp_register = base & 0xFFFFFFF0;
|
| 1079 |
|
|
temp_register = (~temp_register) + 1;
|
| 1080 |
|
|
|
| 1081 |
|
|
p_mem_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
|
| 1082 |
|
|
if (!p_mem_node)
|
| 1083 |
|
|
return -ENOMEM;
|
| 1084 |
|
|
|
| 1085 |
|
|
p_mem_node->base = save_base & (~0x0FL);
|
| 1086 |
|
|
p_mem_node->length = temp_register;
|
| 1087 |
|
|
|
| 1088 |
|
|
p_mem_node->next = func->p_mem_head;
|
| 1089 |
|
|
func->p_mem_head = p_mem_node;
|
| 1090 |
|
|
} else
|
| 1091 |
|
|
if (((base & 0x0BL) == 0x00)
|
| 1092 |
|
|
&& (save_command & 0x02)) {
|
| 1093 |
|
|
// prefetchable memory base
|
| 1094 |
|
|
temp_register = base & 0xFFFFFFF0;
|
| 1095 |
|
|
temp_register = (~temp_register) + 1;
|
| 1096 |
|
|
|
| 1097 |
|
|
mem_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
|
| 1098 |
|
|
if (!mem_node)
|
| 1099 |
|
|
return -ENOMEM;
|
| 1100 |
|
|
|
| 1101 |
|
|
mem_node->base = save_base & (~0x0FL);
|
| 1102 |
|
|
mem_node->length = temp_register;
|
| 1103 |
|
|
|
| 1104 |
|
|
mem_node->next = func->mem_head;
|
| 1105 |
|
|
func->mem_head = mem_node;
|
| 1106 |
|
|
} else
|
| 1107 |
|
|
return(1);
|
| 1108 |
|
|
}
|
| 1109 |
|
|
} // End of base register loop
|
| 1110 |
|
|
} else { // Some other unknown header type
|
| 1111 |
|
|
}
|
| 1112 |
|
|
|
| 1113 |
|
|
// find the next device in this slot
|
| 1114 |
|
|
func = cpqhp_slot_find(func->bus, func->device, index++);
|
| 1115 |
|
|
}
|
| 1116 |
|
|
|
| 1117 |
|
|
return(0);
|
| 1118 |
|
|
}
|
| 1119 |
|
|
|
| 1120 |
|
|
|
| 1121 |
|
|
/*
|
| 1122 |
|
|
* cpqhp_configure_board
|
| 1123 |
|
|
*
|
| 1124 |
|
|
* Copies saved configuration information to one slot.
|
| 1125 |
|
|
* this is called recursively for bridge devices.
|
| 1126 |
|
|
* this is for hot plug REPLACE!
|
| 1127 |
|
|
*
|
| 1128 |
|
|
* returns 0 if success
|
| 1129 |
|
|
*/
|
| 1130 |
|
|
int cpqhp_configure_board(struct controller *ctrl, struct pci_func * func)
|
| 1131 |
|
|
{
|
| 1132 |
|
|
int cloop;
|
| 1133 |
|
|
u8 header_type;
|
| 1134 |
|
|
u8 secondary_bus;
|
| 1135 |
|
|
int sub_bus;
|
| 1136 |
|
|
struct pci_func *next;
|
| 1137 |
|
|
u32 temp;
|
| 1138 |
|
|
u32 rc;
|
| 1139 |
|
|
int index = 0;
|
| 1140 |
|
|
|
| 1141 |
|
|
func = cpqhp_slot_find(func->bus, func->device, index++);
|
| 1142 |
|
|
|
| 1143 |
|
|
while (func != NULL) {
|
| 1144 |
|
|
// Start at the top of config space so that the control
|
| 1145 |
|
|
// registers are programmed last
|
| 1146 |
|
|
for (cloop = 0x3C; cloop > 0; cloop -= 4) {
|
| 1147 |
|
|
pci_write_config_dword_nodev(ctrl->pci_ops, func->bus, func->device, func->function, cloop, func->config_space[cloop >> 2]);
|
| 1148 |
|
|
}
|
| 1149 |
|
|
|
| 1150 |
|
|
pci_read_config_byte_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_HEADER_TYPE, &header_type);
|
| 1151 |
|
|
|
| 1152 |
|
|
// If this is a bridge device, restore subordinate devices
|
| 1153 |
|
|
if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { // PCI-PCI Bridge
|
| 1154 |
|
|
pci_read_config_byte_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_SECONDARY_BUS, &secondary_bus);
|
| 1155 |
|
|
|
| 1156 |
|
|
sub_bus = (int) secondary_bus;
|
| 1157 |
|
|
|
| 1158 |
|
|
next = cpqhp_slot_list[sub_bus];
|
| 1159 |
|
|
|
| 1160 |
|
|
while (next != NULL) {
|
| 1161 |
|
|
rc = cpqhp_configure_board(ctrl, next);
|
| 1162 |
|
|
|
| 1163 |
|
|
if (rc)
|
| 1164 |
|
|
return rc;
|
| 1165 |
|
|
|
| 1166 |
|
|
next = next->next;
|
| 1167 |
|
|
}
|
| 1168 |
|
|
} else {
|
| 1169 |
|
|
|
| 1170 |
|
|
// Check all the base Address Registers to make sure
|
| 1171 |
|
|
// they are the same. If not, the board is different.
|
| 1172 |
|
|
|
| 1173 |
|
|
for (cloop = 16; cloop < 40; cloop += 4) {
|
| 1174 |
|
|
pci_read_config_dword_nodev (ctrl->pci_ops, func->bus, func->device, func->function, cloop, &temp);
|
| 1175 |
|
|
|
| 1176 |
|
|
if (temp != func->config_space[cloop >> 2]) {
|
| 1177 |
|
|
dbg("Config space compare failure!!! offset = %x\n", cloop);
|
| 1178 |
|
|
dbg("bus = %x, device = %x, function = %x\n", func->bus, func->device, func->function);
|
| 1179 |
|
|
dbg("temp = %x, config space = %x\n\n", temp, func->config_space[cloop]);
|
| 1180 |
|
|
return 1;
|
| 1181 |
|
|
}
|
| 1182 |
|
|
}
|
| 1183 |
|
|
}
|
| 1184 |
|
|
|
| 1185 |
|
|
func->configured = 1;
|
| 1186 |
|
|
|
| 1187 |
|
|
func = cpqhp_slot_find(func->bus, func->device, index++);
|
| 1188 |
|
|
}
|
| 1189 |
|
|
|
| 1190 |
|
|
return 0;
|
| 1191 |
|
|
}
|
| 1192 |
|
|
|
| 1193 |
|
|
|
| 1194 |
|
|
/*
|
| 1195 |
|
|
* cpqhp_valid_replace
|
| 1196 |
|
|
*
|
| 1197 |
|
|
* this function checks to see if a board is the same as the
|
| 1198 |
|
|
* one it is replacing. this check will detect if the device's
|
| 1199 |
|
|
* vendor or device id's are the same
|
| 1200 |
|
|
*
|
| 1201 |
|
|
* returns 0 if the board is the same nonzero otherwise
|
| 1202 |
|
|
*/
|
| 1203 |
|
|
int cpqhp_valid_replace(struct controller *ctrl, struct pci_func * func)
|
| 1204 |
|
|
{
|
| 1205 |
|
|
u8 cloop;
|
| 1206 |
|
|
u8 header_type;
|
| 1207 |
|
|
u8 secondary_bus;
|
| 1208 |
|
|
u8 type;
|
| 1209 |
|
|
u32 temp_register = 0;
|
| 1210 |
|
|
u32 base;
|
| 1211 |
|
|
u32 rc;
|
| 1212 |
|
|
struct pci_func *next;
|
| 1213 |
|
|
int index = 0;
|
| 1214 |
|
|
|
| 1215 |
|
|
if (!func->is_a_board)
|
| 1216 |
|
|
return(ADD_NOT_SUPPORTED);
|
| 1217 |
|
|
|
| 1218 |
|
|
func = cpqhp_slot_find(func->bus, func->device, index++);
|
| 1219 |
|
|
|
| 1220 |
|
|
while (func != NULL) {
|
| 1221 |
|
|
pci_read_config_dword_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_VENDOR_ID, &temp_register);
|
| 1222 |
|
|
|
| 1223 |
|
|
// No adapter present
|
| 1224 |
|
|
if (temp_register == 0xFFFFFFFF)
|
| 1225 |
|
|
return(NO_ADAPTER_PRESENT);
|
| 1226 |
|
|
|
| 1227 |
|
|
if (temp_register != func->config_space[0])
|
| 1228 |
|
|
return(ADAPTER_NOT_SAME);
|
| 1229 |
|
|
|
| 1230 |
|
|
// Check for same revision number and class code
|
| 1231 |
|
|
pci_read_config_dword_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_CLASS_REVISION, &temp_register);
|
| 1232 |
|
|
|
| 1233 |
|
|
// Adapter not the same
|
| 1234 |
|
|
if (temp_register != func->config_space[0x08 >> 2])
|
| 1235 |
|
|
return(ADAPTER_NOT_SAME);
|
| 1236 |
|
|
|
| 1237 |
|
|
// Check for Bridge
|
| 1238 |
|
|
pci_read_config_byte_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_HEADER_TYPE, &header_type);
|
| 1239 |
|
|
|
| 1240 |
|
|
if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { // PCI-PCI Bridge
|
| 1241 |
|
|
// In order to continue checking, we must program the
|
| 1242 |
|
|
// bus registers in the bridge to respond to accesses
|
| 1243 |
|
|
// for it's subordinate bus(es)
|
| 1244 |
|
|
|
| 1245 |
|
|
temp_register = func->config_space[0x18 >> 2];
|
| 1246 |
|
|
pci_write_config_dword_nodev(ctrl->pci_ops, func->bus, func->device, func->function, PCI_PRIMARY_BUS, temp_register);
|
| 1247 |
|
|
|
| 1248 |
|
|
secondary_bus = (temp_register >> 8) & 0xFF;
|
| 1249 |
|
|
|
| 1250 |
|
|
next = cpqhp_slot_list[secondary_bus];
|
| 1251 |
|
|
|
| 1252 |
|
|
while (next != NULL) {
|
| 1253 |
|
|
rc = cpqhp_valid_replace(ctrl, next);
|
| 1254 |
|
|
|
| 1255 |
|
|
if (rc)
|
| 1256 |
|
|
return(rc);
|
| 1257 |
|
|
|
| 1258 |
|
|
next = next->next;
|
| 1259 |
|
|
}
|
| 1260 |
|
|
|
| 1261 |
|
|
}
|
| 1262 |
|
|
// Check to see if it is a standard config header
|
| 1263 |
|
|
else if ((header_type & 0x7F) == PCI_HEADER_TYPE_NORMAL) {
|
| 1264 |
|
|
// Check subsystem vendor and ID
|
| 1265 |
|
|
pci_read_config_dword_nodev (ctrl->pci_ops, func->bus, func->device, func->function, PCI_SUBSYSTEM_VENDOR_ID, &temp_register);
|
| 1266 |
|
|
|
| 1267 |
|
|
if (temp_register != func->config_space[0x2C >> 2]) {
|
| 1268 |
|
|
// If it's a SMART-2 and the register isn't filled
|
| 1269 |
|
|
// in, ignore the difference because
|
| 1270 |
|
|
// they just have an old rev of the firmware
|
| 1271 |
|
|
|
| 1272 |
|
|
if (!((func->config_space[0] == 0xAE100E11)
|
| 1273 |
|
|
&& (temp_register == 0x00L)))
|
| 1274 |
|
|
return(ADAPTER_NOT_SAME);
|
| 1275 |
|
|
}
|
| 1276 |
|
|
// Figure out IO and memory base lengths
|
| 1277 |
|
|
for (cloop = 0x10; cloop <= 0x24; cloop += 4) {
|
| 1278 |
|
|
temp_register = 0xFFFFFFFF;
|
| 1279 |
|
|
pci_write_config_dword_nodev(ctrl->pci_ops, func->bus, func->device, func->function, cloop, temp_register);
|
| 1280 |
|
|
|
| 1281 |
|
|
pci_read_config_dword_nodev (ctrl->pci_ops, func->bus, func->device, func->function, cloop, &base);
|
| 1282 |
|
|
|
| 1283 |
|
|
if (base) { // If this register is implemented
|
| 1284 |
|
|
if (base & 0x01L) {
|
| 1285 |
|
|
// IO base
|
| 1286 |
|
|
// set base = amount of IO space requested
|
| 1287 |
|
|
base = base & 0xFFFFFFFE;
|
| 1288 |
|
|
base = (~base) + 1;
|
| 1289 |
|
|
|
| 1290 |
|
|
type = 1;
|
| 1291 |
|
|
} else {
|
| 1292 |
|
|
// memory base
|
| 1293 |
|
|
base = base & 0xFFFFFFF0;
|
| 1294 |
|
|
base = (~base) + 1;
|
| 1295 |
|
|
|
| 1296 |
|
|
type = 0;
|
| 1297 |
|
|
}
|
| 1298 |
|
|
} else {
|
| 1299 |
|
|
base = 0x0L;
|
| 1300 |
|
|
type = 0;
|
| 1301 |
|
|
}
|
| 1302 |
|
|
|
| 1303 |
|
|
// Check information in slot structure
|
| 1304 |
|
|
if (func->base_length[(cloop - 0x10) >> 2] != base)
|
| 1305 |
|
|
return(ADAPTER_NOT_SAME);
|
| 1306 |
|
|
|
| 1307 |
|
|
if (func->base_type[(cloop - 0x10) >> 2] != type)
|
| 1308 |
|
|
return(ADAPTER_NOT_SAME);
|
| 1309 |
|
|
|
| 1310 |
|
|
} // End of base register loop
|
| 1311 |
|
|
|
| 1312 |
|
|
} // End of (type 0 config space) else
|
| 1313 |
|
|
else {
|
| 1314 |
|
|
// this is not a type 0 or 1 config space header so
|
| 1315 |
|
|
// we don't know how to do it
|
| 1316 |
|
|
return(DEVICE_TYPE_NOT_SUPPORTED);
|
| 1317 |
|
|
}
|
| 1318 |
|
|
|
| 1319 |
|
|
// Get the next function
|
| 1320 |
|
|
func = cpqhp_slot_find(func->bus, func->device, index++);
|
| 1321 |
|
|
}
|
| 1322 |
|
|
|
| 1323 |
|
|
|
| 1324 |
|
|
return(0);
|
| 1325 |
|
|
}
|
| 1326 |
|
|
|
| 1327 |
|
|
|
| 1328 |
|
|
/*
|
| 1329 |
|
|
* cpqhp_find_available_resources
|
| 1330 |
|
|
*
|
| 1331 |
|
|
* Finds available memory, IO, and IRQ resources for programming
|
| 1332 |
|
|
* devices which may be added to the system
|
| 1333 |
|
|
* this function is for hot plug ADD!
|
| 1334 |
|
|
*
|
| 1335 |
|
|
* returns 0 if success
|
| 1336 |
|
|
*/
|
| 1337 |
|
|
int cpqhp_find_available_resources (struct controller *ctrl, void *rom_start)
|
| 1338 |
|
|
{
|
| 1339 |
|
|
u8 temp;
|
| 1340 |
|
|
u8 populated_slot;
|
| 1341 |
|
|
u8 bridged_slot;
|
| 1342 |
|
|
void *one_slot;
|
| 1343 |
|
|
struct pci_func *func = NULL;
|
| 1344 |
|
|
int i = 10, index;
|
| 1345 |
|
|
u32 temp_dword, rc;
|
| 1346 |
|
|
struct pci_resource *mem_node;
|
| 1347 |
|
|
struct pci_resource *p_mem_node;
|
| 1348 |
|
|
struct pci_resource *io_node;
|
| 1349 |
|
|
struct pci_resource *bus_node;
|
| 1350 |
|
|
void *rom_resource_table;
|
| 1351 |
|
|
|
| 1352 |
|
|
rom_resource_table = detect_HRT_floating_pointer(rom_start, rom_start+0xffff);
|
| 1353 |
|
|
dbg("rom_resource_table = %p\n", rom_resource_table);
|
| 1354 |
|
|
|
| 1355 |
|
|
if (rom_resource_table == NULL) {
|
| 1356 |
|
|
return -ENODEV;
|
| 1357 |
|
|
}
|
| 1358 |
|
|
// Sum all resources and setup resource maps
|
| 1359 |
|
|
unused_IRQ = readl(rom_resource_table + UNUSED_IRQ);
|
| 1360 |
|
|
dbg("unused_IRQ = %x\n", unused_IRQ);
|
| 1361 |
|
|
|
| 1362 |
|
|
temp = 0;
|
| 1363 |
|
|
while (unused_IRQ) {
|
| 1364 |
|
|
if (unused_IRQ & 1) {
|
| 1365 |
|
|
cpqhp_disk_irq = temp;
|
| 1366 |
|
|
break;
|
| 1367 |
|
|
}
|
| 1368 |
|
|
unused_IRQ = unused_IRQ >> 1;
|
| 1369 |
|
|
temp++;
|
| 1370 |
|
|
}
|
| 1371 |
|
|
|
| 1372 |
|
|
dbg("cpqhp_disk_irq= %d\n", cpqhp_disk_irq);
|
| 1373 |
|
|
unused_IRQ = unused_IRQ >> 1;
|
| 1374 |
|
|
temp++;
|
| 1375 |
|
|
|
| 1376 |
|
|
while (unused_IRQ) {
|
| 1377 |
|
|
if (unused_IRQ & 1) {
|
| 1378 |
|
|
cpqhp_nic_irq = temp;
|
| 1379 |
|
|
break;
|
| 1380 |
|
|
}
|
| 1381 |
|
|
unused_IRQ = unused_IRQ >> 1;
|
| 1382 |
|
|
temp++;
|
| 1383 |
|
|
}
|
| 1384 |
|
|
|
| 1385 |
|
|
dbg("cpqhp_nic_irq= %d\n", cpqhp_nic_irq);
|
| 1386 |
|
|
unused_IRQ = readl(rom_resource_table + PCIIRQ);
|
| 1387 |
|
|
|
| 1388 |
|
|
temp = 0;
|
| 1389 |
|
|
|
| 1390 |
|
|
if (!cpqhp_nic_irq) {
|
| 1391 |
|
|
cpqhp_nic_irq = ctrl->interrupt;
|
| 1392 |
|
|
}
|
| 1393 |
|
|
|
| 1394 |
|
|
if (!cpqhp_disk_irq) {
|
| 1395 |
|
|
cpqhp_disk_irq = ctrl->interrupt;
|
| 1396 |
|
|
}
|
| 1397 |
|
|
|
| 1398 |
|
|
dbg("cpqhp_disk_irq, cpqhp_nic_irq= %d, %d\n", cpqhp_disk_irq, cpqhp_nic_irq);
|
| 1399 |
|
|
|
| 1400 |
|
|
rc = compaq_nvram_load(rom_start, ctrl);
|
| 1401 |
|
|
if (rc)
|
| 1402 |
|
|
return rc;
|
| 1403 |
|
|
|
| 1404 |
|
|
one_slot = rom_resource_table + sizeof (struct hrt);
|
| 1405 |
|
|
|
| 1406 |
|
|
i = readb(rom_resource_table + NUMBER_OF_ENTRIES);
|
| 1407 |
|
|
dbg("number_of_entries = %d\n", i);
|
| 1408 |
|
|
|
| 1409 |
|
|
if (!readb(one_slot + SECONDARY_BUS)) {
|
| 1410 |
|
|
return(1);
|
| 1411 |
|
|
}
|
| 1412 |
|
|
|
| 1413 |
|
|
dbg("dev|IO base|length|Mem base|length|Pre base|length|PB SB MB\n");
|
| 1414 |
|
|
|
| 1415 |
|
|
while (i && readb(one_slot + SECONDARY_BUS)) {
|
| 1416 |
|
|
u8 dev_func = readb(one_slot + DEV_FUNC);
|
| 1417 |
|
|
u8 primary_bus = readb(one_slot + PRIMARY_BUS);
|
| 1418 |
|
|
u8 secondary_bus = readb(one_slot + SECONDARY_BUS);
|
| 1419 |
|
|
u8 max_bus = readb(one_slot + MAX_BUS);
|
| 1420 |
|
|
u16 io_base = readw(one_slot + IO_BASE);
|
| 1421 |
|
|
u16 io_length = readw(one_slot + IO_LENGTH);
|
| 1422 |
|
|
u16 mem_base = readw(one_slot + MEM_BASE);
|
| 1423 |
|
|
u16 mem_length = readw(one_slot + MEM_LENGTH);
|
| 1424 |
|
|
u16 pre_mem_base = readw(one_slot + PRE_MEM_BASE);
|
| 1425 |
|
|
u16 pre_mem_length = readw(one_slot + PRE_MEM_LENGTH);
|
| 1426 |
|
|
|
| 1427 |
|
|
dbg("%2.2x | %4.4x | %4.4x | %4.4x | %4.4x | %4.4x | %4.4x |%2.2x %2.2x %2.2x\n",
|
| 1428 |
|
|
dev_func, io_base, io_length, mem_base, mem_length, pre_mem_base, pre_mem_length,
|
| 1429 |
|
|
primary_bus, secondary_bus, max_bus);
|
| 1430 |
|
|
|
| 1431 |
|
|
// If this entry isn't for our controller's bus, ignore it
|
| 1432 |
|
|
if (primary_bus != ctrl->bus) {
|
| 1433 |
|
|
i--;
|
| 1434 |
|
|
one_slot += sizeof (struct slot_rt);
|
| 1435 |
|
|
continue;
|
| 1436 |
|
|
}
|
| 1437 |
|
|
// find out if this entry is for an occupied slot
|
| 1438 |
|
|
pci_read_config_dword_nodev (ctrl->pci_ops, primary_bus, dev_func >> 3, dev_func & 0x07, PCI_VENDOR_ID, &temp_dword);
|
| 1439 |
|
|
|
| 1440 |
|
|
dbg("temp_D_word = %x\n", temp_dword);
|
| 1441 |
|
|
|
| 1442 |
|
|
if (temp_dword != 0xFFFFFFFF) {
|
| 1443 |
|
|
index = 0;
|
| 1444 |
|
|
func = cpqhp_slot_find(primary_bus, dev_func >> 3, 0);
|
| 1445 |
|
|
|
| 1446 |
|
|
while (func && (func->function != (dev_func & 0x07))) {
|
| 1447 |
|
|
dbg("func = %p (bus, dev, fun) = (%d, %d, %d)\n", func, primary_bus, dev_func >> 3, index);
|
| 1448 |
|
|
func = cpqhp_slot_find(primary_bus, dev_func >> 3, index++);
|
| 1449 |
|
|
}
|
| 1450 |
|
|
|
| 1451 |
|
|
// If we can't find a match, skip this table entry
|
| 1452 |
|
|
if (!func) {
|
| 1453 |
|
|
i--;
|
| 1454 |
|
|
one_slot += sizeof (struct slot_rt);
|
| 1455 |
|
|
continue;
|
| 1456 |
|
|
}
|
| 1457 |
|
|
// this may not work and shouldn't be used
|
| 1458 |
|
|
if (secondary_bus != primary_bus)
|
| 1459 |
|
|
bridged_slot = 1;
|
| 1460 |
|
|
else
|
| 1461 |
|
|
bridged_slot = 0;
|
| 1462 |
|
|
|
| 1463 |
|
|
populated_slot = 1;
|
| 1464 |
|
|
} else {
|
| 1465 |
|
|
populated_slot = 0;
|
| 1466 |
|
|
bridged_slot = 0;
|
| 1467 |
|
|
}
|
| 1468 |
|
|
|
| 1469 |
|
|
|
| 1470 |
|
|
// If we've got a valid IO base, use it
|
| 1471 |
|
|
|
| 1472 |
|
|
temp_dword = io_base + io_length;
|
| 1473 |
|
|
|
| 1474 |
|
|
if ((io_base) && (temp_dword < 0x10000)) {
|
| 1475 |
|
|
io_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
|
| 1476 |
|
|
if (!io_node)
|
| 1477 |
|
|
return -ENOMEM;
|
| 1478 |
|
|
|
| 1479 |
|
|
io_node->base = io_base;
|
| 1480 |
|
|
io_node->length = io_length;
|
| 1481 |
|
|
|
| 1482 |
|
|
dbg("found io_node(base, length) = %x, %x\n", io_node->base, io_node->length);
|
| 1483 |
|
|
dbg("populated slot =%d \n", populated_slot);
|
| 1484 |
|
|
if (!populated_slot) {
|
| 1485 |
|
|
io_node->next = ctrl->io_head;
|
| 1486 |
|
|
ctrl->io_head = io_node;
|
| 1487 |
|
|
} else {
|
| 1488 |
|
|
io_node->next = func->io_head;
|
| 1489 |
|
|
func->io_head = io_node;
|
| 1490 |
|
|
}
|
| 1491 |
|
|
}
|
| 1492 |
|
|
|
| 1493 |
|
|
// If we've got a valid memory base, use it
|
| 1494 |
|
|
temp_dword = mem_base + mem_length;
|
| 1495 |
|
|
if ((mem_base) && (temp_dword < 0x10000)) {
|
| 1496 |
|
|
mem_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
|
| 1497 |
|
|
if (!mem_node)
|
| 1498 |
|
|
return -ENOMEM;
|
| 1499 |
|
|
|
| 1500 |
|
|
mem_node->base = mem_base << 16;
|
| 1501 |
|
|
|
| 1502 |
|
|
mem_node->length = mem_length << 16;
|
| 1503 |
|
|
|
| 1504 |
|
|
dbg("found mem_node(base, length) = %x, %x\n", mem_node->base, mem_node->length);
|
| 1505 |
|
|
dbg("populated slot =%d \n", populated_slot);
|
| 1506 |
|
|
if (!populated_slot) {
|
| 1507 |
|
|
mem_node->next = ctrl->mem_head;
|
| 1508 |
|
|
ctrl->mem_head = mem_node;
|
| 1509 |
|
|
} else {
|
| 1510 |
|
|
mem_node->next = func->mem_head;
|
| 1511 |
|
|
func->mem_head = mem_node;
|
| 1512 |
|
|
}
|
| 1513 |
|
|
}
|
| 1514 |
|
|
|
| 1515 |
|
|
// If we've got a valid prefetchable memory base, and
|
| 1516 |
|
|
// the base + length isn't greater than 0xFFFF
|
| 1517 |
|
|
temp_dword = pre_mem_base + pre_mem_length;
|
| 1518 |
|
|
if ((pre_mem_base) && (temp_dword < 0x10000)) {
|
| 1519 |
|
|
p_mem_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
|
| 1520 |
|
|
if (!p_mem_node)
|
| 1521 |
|
|
return -ENOMEM;
|
| 1522 |
|
|
|
| 1523 |
|
|
p_mem_node->base = pre_mem_base << 16;
|
| 1524 |
|
|
|
| 1525 |
|
|
p_mem_node->length = pre_mem_length << 16;
|
| 1526 |
|
|
dbg("found p_mem_node(base, length) = %x, %x\n", p_mem_node->base, p_mem_node->length);
|
| 1527 |
|
|
dbg("populated slot =%d \n", populated_slot);
|
| 1528 |
|
|
|
| 1529 |
|
|
if (!populated_slot) {
|
| 1530 |
|
|
p_mem_node->next = ctrl->p_mem_head;
|
| 1531 |
|
|
ctrl->p_mem_head = p_mem_node;
|
| 1532 |
|
|
} else {
|
| 1533 |
|
|
p_mem_node->next = func->p_mem_head;
|
| 1534 |
|
|
func->p_mem_head = p_mem_node;
|
| 1535 |
|
|
}
|
| 1536 |
|
|
}
|
| 1537 |
|
|
|
| 1538 |
|
|
// If we've got a valid bus number, use it
|
| 1539 |
|
|
// The second condition is to ignore bus numbers on
|
| 1540 |
|
|
// populated slots that don't have PCI-PCI bridges
|
| 1541 |
|
|
if (secondary_bus && (secondary_bus != primary_bus)) {
|
| 1542 |
|
|
bus_node = (struct pci_resource *) kmalloc(sizeof(struct pci_resource), GFP_KERNEL);
|
| 1543 |
|
|
if (!bus_node)
|
| 1544 |
|
|
return -ENOMEM;
|
| 1545 |
|
|
|
| 1546 |
|
|
bus_node->base = secondary_bus;
|
| 1547 |
|
|
bus_node->length = max_bus - secondary_bus + 1;
|
| 1548 |
|
|
dbg("found bus_node(base, length) = %x, %x\n", bus_node->base, bus_node->length);
|
| 1549 |
|
|
dbg("populated slot =%d \n", populated_slot);
|
| 1550 |
|
|
if (!populated_slot) {
|
| 1551 |
|
|
bus_node->next = ctrl->bus_head;
|
| 1552 |
|
|
ctrl->bus_head = bus_node;
|
| 1553 |
|
|
} else {
|
| 1554 |
|
|
bus_node->next = func->bus_head;
|
| 1555 |
|
|
func->bus_head = bus_node;
|
| 1556 |
|
|
}
|
| 1557 |
|
|
}
|
| 1558 |
|
|
|
| 1559 |
|
|
i--;
|
| 1560 |
|
|
one_slot += sizeof (struct slot_rt);
|
| 1561 |
|
|
}
|
| 1562 |
|
|
|
| 1563 |
|
|
// If all of the following fail, we don't have any resources for
|
| 1564 |
|
|
// hot plug add
|
| 1565 |
|
|
rc = 1;
|
| 1566 |
|
|
rc &= cpqhp_resource_sort_and_combine(&(ctrl->mem_head));
|
| 1567 |
|
|
rc &= cpqhp_resource_sort_and_combine(&(ctrl->p_mem_head));
|
| 1568 |
|
|
rc &= cpqhp_resource_sort_and_combine(&(ctrl->io_head));
|
| 1569 |
|
|
rc &= cpqhp_resource_sort_and_combine(&(ctrl->bus_head));
|
| 1570 |
|
|
|
| 1571 |
|
|
return(rc);
|
| 1572 |
|
|
}
|
| 1573 |
|
|
|
| 1574 |
|
|
|
| 1575 |
|
|
/*
|
| 1576 |
|
|
* cpqhp_return_board_resources
|
| 1577 |
|
|
*
|
| 1578 |
|
|
* this routine returns all resources allocated to a board to
|
| 1579 |
|
|
* the available pool.
|
| 1580 |
|
|
*
|
| 1581 |
|
|
* returns 0 if success
|
| 1582 |
|
|
*/
|
| 1583 |
|
|
int cpqhp_return_board_resources(struct pci_func * func, struct resource_lists * resources)
|
| 1584 |
|
|
{
|
| 1585 |
|
|
int rc = 0;
|
| 1586 |
|
|
struct pci_resource *node;
|
| 1587 |
|
|
struct pci_resource *t_node;
|
| 1588 |
|
|
dbg("%s\n", __FUNCTION__);
|
| 1589 |
|
|
|
| 1590 |
|
|
if (!func)
|
| 1591 |
|
|
return(1);
|
| 1592 |
|
|
|
| 1593 |
|
|
node = func->io_head;
|
| 1594 |
|
|
func->io_head = NULL;
|
| 1595 |
|
|
while (node) {
|
| 1596 |
|
|
t_node = node->next;
|
| 1597 |
|
|
return_resource(&(resources->io_head), node);
|
| 1598 |
|
|
node = t_node;
|
| 1599 |
|
|
}
|
| 1600 |
|
|
|
| 1601 |
|
|
node = func->mem_head;
|
| 1602 |
|
|
func->mem_head = NULL;
|
| 1603 |
|
|
while (node) {
|
| 1604 |
|
|
t_node = node->next;
|
| 1605 |
|
|
return_resource(&(resources->mem_head), node);
|
| 1606 |
|
|
node = t_node;
|
| 1607 |
|
|
}
|
| 1608 |
|
|
|
| 1609 |
|
|
node = func->p_mem_head;
|
| 1610 |
|
|
func->p_mem_head = NULL;
|
| 1611 |
|
|
while (node) {
|
| 1612 |
|
|
t_node = node->next;
|
| 1613 |
|
|
return_resource(&(resources->p_mem_head), node);
|
| 1614 |
|
|
node = t_node;
|
| 1615 |
|
|
}
|
| 1616 |
|
|
|
| 1617 |
|
|
node = func->bus_head;
|
| 1618 |
|
|
func->bus_head = NULL;
|
| 1619 |
|
|
while (node) {
|
| 1620 |
|
|
t_node = node->next;
|
| 1621 |
|
|
return_resource(&(resources->bus_head), node);
|
| 1622 |
|
|
node = t_node;
|
| 1623 |
|
|
}
|
| 1624 |
|
|
|
| 1625 |
|
|
rc |= cpqhp_resource_sort_and_combine(&(resources->mem_head));
|
| 1626 |
|
|
rc |= cpqhp_resource_sort_and_combine(&(resources->p_mem_head));
|
| 1627 |
|
|
rc |= cpqhp_resource_sort_and_combine(&(resources->io_head));
|
| 1628 |
|
|
rc |= cpqhp_resource_sort_and_combine(&(resources->bus_head));
|
| 1629 |
|
|
|
| 1630 |
|
|
return(rc);
|
| 1631 |
|
|
}
|
| 1632 |
|
|
|
| 1633 |
|
|
|
| 1634 |
|
|
/*
|
| 1635 |
|
|
* cpqhp_destroy_resource_list
|
| 1636 |
|
|
*
|
| 1637 |
|
|
* Puts node back in the resource list pointed to by head
|
| 1638 |
|
|
*/
|
| 1639 |
|
|
void cpqhp_destroy_resource_list (struct resource_lists * resources)
|
| 1640 |
|
|
{
|
| 1641 |
|
|
struct pci_resource *res, *tres;
|
| 1642 |
|
|
|
| 1643 |
|
|
res = resources->io_head;
|
| 1644 |
|
|
resources->io_head = NULL;
|
| 1645 |
|
|
|
| 1646 |
|
|
while (res) {
|
| 1647 |
|
|
tres = res;
|
| 1648 |
|
|
res = res->next;
|
| 1649 |
|
|
kfree(tres);
|
| 1650 |
|
|
}
|
| 1651 |
|
|
|
| 1652 |
|
|
res = resources->mem_head;
|
| 1653 |
|
|
resources->mem_head = NULL;
|
| 1654 |
|
|
|
| 1655 |
|
|
while (res) {
|
| 1656 |
|
|
tres = res;
|
| 1657 |
|
|
res = res->next;
|
| 1658 |
|
|
kfree(tres);
|
| 1659 |
|
|
}
|
| 1660 |
|
|
|
| 1661 |
|
|
res = resources->p_mem_head;
|
| 1662 |
|
|
resources->p_mem_head = NULL;
|
| 1663 |
|
|
|
| 1664 |
|
|
while (res) {
|
| 1665 |
|
|
tres = res;
|
| 1666 |
|
|
res = res->next;
|
| 1667 |
|
|
kfree(tres);
|
| 1668 |
|
|
}
|
| 1669 |
|
|
|
| 1670 |
|
|
res = resources->bus_head;
|
| 1671 |
|
|
resources->bus_head = NULL;
|
| 1672 |
|
|
|
| 1673 |
|
|
while (res) {
|
| 1674 |
|
|
tres = res;
|
| 1675 |
|
|
res = res->next;
|
| 1676 |
|
|
kfree(tres);
|
| 1677 |
|
|
}
|
| 1678 |
|
|
}
|
| 1679 |
|
|
|
| 1680 |
|
|
|
| 1681 |
|
|
/*
|
| 1682 |
|
|
* cpqhp_destroy_board_resources
|
| 1683 |
|
|
*
|
| 1684 |
|
|
* Puts node back in the resource list pointed to by head
|
| 1685 |
|
|
*/
|
| 1686 |
|
|
void cpqhp_destroy_board_resources (struct pci_func * func)
|
| 1687 |
|
|
{
|
| 1688 |
|
|
struct pci_resource *res, *tres;
|
| 1689 |
|
|
|
| 1690 |
|
|
res = func->io_head;
|
| 1691 |
|
|
func->io_head = NULL;
|
| 1692 |
|
|
|
| 1693 |
|
|
while (res) {
|
| 1694 |
|
|
tres = res;
|
| 1695 |
|
|
res = res->next;
|
| 1696 |
|
|
kfree(tres);
|
| 1697 |
|
|
}
|
| 1698 |
|
|
|
| 1699 |
|
|
res = func->mem_head;
|
| 1700 |
|
|
func->mem_head = NULL;
|
| 1701 |
|
|
|
| 1702 |
|
|
while (res) {
|
| 1703 |
|
|
tres = res;
|
| 1704 |
|
|
res = res->next;
|
| 1705 |
|
|
kfree(tres);
|
| 1706 |
|
|
}
|
| 1707 |
|
|
|
| 1708 |
|
|
res = func->p_mem_head;
|
| 1709 |
|
|
func->p_mem_head = NULL;
|
| 1710 |
|
|
|
| 1711 |
|
|
while (res) {
|
| 1712 |
|
|
tres = res;
|
| 1713 |
|
|
res = res->next;
|
| 1714 |
|
|
kfree(tres);
|
| 1715 |
|
|
}
|
| 1716 |
|
|
|
| 1717 |
|
|
res = func->bus_head;
|
| 1718 |
|
|
func->bus_head = NULL;
|
| 1719 |
|
|
|
| 1720 |
|
|
while (res) {
|
| 1721 |
|
|
tres = res;
|
| 1722 |
|
|
res = res->next;
|
| 1723 |
|
|
kfree(tres);
|
| 1724 |
|
|
}
|
| 1725 |
|
|
}
|
| 1726 |
|
|
|
