arch/powerpc/platforms/powernv/eeh-ioda.c

   1 /*
   2  * The file intends to implement the functions needed by EEH, which is
   3  * built on IODA compliant chip. Actually, lots of functions related
   4  * to EEH would be built based on the OPAL APIs.
   5  *
   6  * Copyright Benjamin Herrenschmidt & Gavin Shan, IBM Corporation 2013.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  */
  13
  14 #include <linux/bootmem.h>
  15 #include <linux/delay.h>
  16 #include <linux/init.h>
  17 #include <linux/io.h>
  18 #include <linux/irq.h>
  19 #include <linux/kernel.h>
  20 #include <linux/msi.h>
  21 #include <linux/pci.h>
  22 #include <linux/string.h>
  23
  24 #include <asm/eeh.h>
  25 #include <asm/eeh_event.h>
  26 #include <asm/io.h>
  27 #include <asm/iommu.h>
  28 #include <asm/msi_bitmap.h>
  29 #include <asm/opal.h>
  30 #include <asm/pci-bridge.h>
  31 #include <asm/ppc-pci.h>
  32 #include <asm/tce.h>
  33
  34 #include "powernv.h"
  35 #include "pci.h"
  36
  37 /**
  38  * ioda_eeh_post_init - Chip dependent post initialization
  39  * @hose: PCI controller
  40  *
  41  * The function will be called after eeh PEs and devices
  42  * have been built. That means the EEH is ready to supply
  43  * service with I/O cache.
  44  */
  45 static int ioda_eeh_post_init(struct pci_controller *hose)
  46 {
  47         struct pnv_phb *phb = hose->private_data;
  48
  49         /* FIXME: Enable it for PHB3 later */
  50         if (phb->type == PNV_PHB_IODA1)
  51                 phb->eeh_enabled = 1;
  52
  53         return 0;
  54 }
  55
  56 struct pnv_eeh_ops ioda_eeh_ops = {
  57         .post_init              = ioda_eeh_post_init,
  58         .set_option             = NULL,
  59         .get_state              = NULL,
  60         .reset                  = NULL,
  61         .get_log                = NULL,
  62         .configure_bridge       = NULL,
  63         .next_error             = NULL
  64 };