pci-ioda.c revision dadcd6d6e71311f433a16b71203d983944f14095
1184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt/* 2184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * Support PCI/PCIe on PowerNV platforms 3184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * 4184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * Copyright 2011 Benjamin Herrenschmidt, IBM Corp. 5184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * 6184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * This program is free software; you can redistribute it and/or 7184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * modify it under the terms of the GNU General Public License 8184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * as published by the Free Software Foundation; either version 9184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * 2 of the License, or (at your option) any later version. 10184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt */ 11184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 12cee72d5bb48952f2e50acd2610d52ea82f7092c9Benjamin Herrenschmidt#undef DEBUG 13184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 14184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <linux/kernel.h> 15184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <linux/pci.h> 16361f2a2a1536a1d7ff6f52bf0e4848c1441e17abGavin Shan#include <linux/crash_dump.h> 1737c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan#include <linux/debugfs.h> 18184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <linux/delay.h> 19184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <linux/string.h> 20184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <linux/init.h> 21184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <linux/bootmem.h> 22184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <linux/irq.h> 23184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <linux/io.h> 24184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <linux/msi.h> 25cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt#include <linux/memblock.h> 26184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 27184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <asm/sections.h> 28184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <asm/io.h> 29184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <asm/prom.h> 30184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <asm/pci-bridge.h> 31184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <asm/machdep.h> 32fb1b55d654a7038ca6337fbf55839a308c9bc1a7Gavin Shan#include <asm/msi_bitmap.h> 33184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <asm/ppc-pci.h> 34184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <asm/opal.h> 35184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <asm/iommu.h> 36184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include <asm/tce.h> 37137436c9a6ee385c883db09e41af763888ee7642Gavin Shan#include <asm/xics.h> 3837c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan#include <asm/debug.h> 39184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 40184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include "powernv.h" 41184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#include "pci.h" 42184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 43184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#define define_pe_printk_level(func, kern_level) \ 44184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidtstatic int func(const struct pnv_ioda_pe *pe, const char *fmt, ...) \ 45184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ \ 46184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct va_format vaf; \ 47184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt va_list args; \ 48490e078d6a21aa90d54f36cdcc544e87070175bdGavin Shan char pfix[32]; \ 49184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt int r; \ 50184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt \ 51184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt va_start(args, fmt); \ 52184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt \ 53184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt vaf.fmt = fmt; \ 54184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt vaf.va = &args; \ 55184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt \ 56490e078d6a21aa90d54f36cdcc544e87070175bdGavin Shan if (pe->pdev) \ 57490e078d6a21aa90d54f36cdcc544e87070175bdGavin Shan strlcpy(pfix, dev_name(&pe->pdev->dev), \ 58490e078d6a21aa90d54f36cdcc544e87070175bdGavin Shan sizeof(pfix)); \ 59490e078d6a21aa90d54f36cdcc544e87070175bdGavin Shan else \ 60490e078d6a21aa90d54f36cdcc544e87070175bdGavin Shan sprintf(pfix, "%04x:%02x ", \ 61490e078d6a21aa90d54f36cdcc544e87070175bdGavin Shan pci_domain_nr(pe->pbus), \ 62490e078d6a21aa90d54f36cdcc544e87070175bdGavin Shan pe->pbus->number); \ 63490e078d6a21aa90d54f36cdcc544e87070175bdGavin Shan r = printk(kern_level "pci %s: [PE# %.3d] %pV", \ 64490e078d6a21aa90d54f36cdcc544e87070175bdGavin Shan pfix, pe->pe_number, &vaf); \ 65490e078d6a21aa90d54f36cdcc544e87070175bdGavin Shan \ 66184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt va_end(args); \ 67184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt \ 68184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return r; \ 69184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} \ 70184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 71184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidtdefine_pe_printk_level(pe_err, KERN_ERR); 72184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidtdefine_pe_printk_level(pe_warn, KERN_WARNING); 73184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidtdefine_pe_printk_level(pe_info, KERN_INFO); 74184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 758e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy/* 768e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy * stdcix is only supposed to be used in hypervisor real mode as per 778e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy * the architecture spec 788e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy */ 798e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiystatic inline void __raw_rm_writeq(u64 val, volatile void __iomem *paddr) 808e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy{ 818e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy __asm__ __volatile__("stdcix %0,0,%1" 828e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy : : "r" (val), "r" (paddr) : "memory"); 838e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy} 848e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy 85cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartmanstatic int pnv_ioda_alloc_pe(struct pnv_phb *phb) 86184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 87184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt unsigned long pe; 88184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 89184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt do { 90184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe = find_next_zero_bit(phb->ioda.pe_alloc, 91184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.total_pe, 0); 92184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (pe >= phb->ioda.total_pe) 93184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return IODA_INVALID_PE; 94184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } while(test_and_set_bit(pe, phb->ioda.pe_alloc)); 95184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 964cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan phb->ioda.pe_array[pe].phb = phb; 97184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.pe_array[pe].pe_number = pe; 98184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return pe; 99184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 100184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 101cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartmanstatic void pnv_ioda_free_pe(struct pnv_phb *phb, int pe) 102184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 103184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt WARN_ON(phb->ioda.pe_array[pe].pdev); 104184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 105184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt memset(&phb->ioda.pe_array[pe], 0, sizeof(struct pnv_ioda_pe)); 106184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt clear_bit(pe, phb->ioda.pe_alloc); 107184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 108184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 109184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt/* Currently those 2 are only used when MSIs are enabled, this will change 110184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * but in the meantime, we need to protect them to avoid warnings 111184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt */ 112184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#ifdef CONFIG_PCI_MSI 113cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartmanstatic struct pnv_ioda_pe *pnv_ioda_get_pe(struct pci_dev *dev) 114184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 115184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct pci_controller *hose = pci_bus_to_host(dev->bus); 116184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct pnv_phb *phb = hose->private_data; 117b72c1f651491e4cd33ddec79c504a49071a512f0Benjamin Herrenschmidt struct pci_dn *pdn = pci_get_pdn(dev); 118184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 119184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (!pdn) 120184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return NULL; 121184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (pdn->pe_number == IODA_INVALID_PE) 122184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return NULL; 123184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return &phb->ioda.pe_array[pdn->pe_number]; 124184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 125184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#endif /* CONFIG_PCI_MSI */ 126184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 127cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartmanstatic int pnv_ioda_configure_pe(struct pnv_phb *phb, struct pnv_ioda_pe *pe) 128184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 129184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct pci_dev *parent; 130184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt uint8_t bcomp, dcomp, fcomp; 131184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt long rc, rid_end, rid; 132184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 133184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Bus validation ? */ 134184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (pe->pbus) { 135184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt int count; 136184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 137184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt dcomp = OPAL_IGNORE_RID_DEVICE_NUMBER; 138184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt fcomp = OPAL_IGNORE_RID_FUNCTION_NUMBER; 139184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt parent = pe->pbus->self; 140fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan if (pe->flags & PNV_IODA_PE_BUS_ALL) 141fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan count = pe->pbus->busn_res.end - pe->pbus->busn_res.start + 1; 142fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan else 143fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan count = 1; 144fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan 145184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt switch(count) { 146184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt case 1: bcomp = OpalPciBusAll; break; 147184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt case 2: bcomp = OpalPciBus7Bits; break; 148184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt case 4: bcomp = OpalPciBus6Bits; break; 149184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt case 8: bcomp = OpalPciBus5Bits; break; 150184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt case 16: bcomp = OpalPciBus4Bits; break; 151184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt case 32: bcomp = OpalPciBus3Bits; break; 152184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt default: 153184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_err("%s: Number of subordinate busses %d" 154184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt " unsupported\n", 155184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pci_name(pe->pbus->self), count); 156184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Do an exact match only */ 157184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt bcomp = OpalPciBusAll; 158184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 159184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt rid_end = pe->rid + (count << 8); 160184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } else { 161184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt parent = pe->pdev->bus->self; 162184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt bcomp = OpalPciBusAll; 163184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt dcomp = OPAL_COMPARE_RID_DEVICE_NUMBER; 164184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt fcomp = OPAL_COMPARE_RID_FUNCTION_NUMBER; 165184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt rid_end = pe->rid + 1; 166184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 167184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 168631ad691b5818291d89af9be607d2fe40be0886eGavin Shan /* 169631ad691b5818291d89af9be607d2fe40be0886eGavin Shan * Associate PE in PELT. We need add the PE into the 170631ad691b5818291d89af9be607d2fe40be0886eGavin Shan * corresponding PELT-V as well. Otherwise, the error 171631ad691b5818291d89af9be607d2fe40be0886eGavin Shan * originated from the PE might contribute to other 172631ad691b5818291d89af9be607d2fe40be0886eGavin Shan * PEs. 173631ad691b5818291d89af9be607d2fe40be0886eGavin Shan */ 174184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt rc = opal_pci_set_pe(phb->opal_id, pe->pe_number, pe->rid, 175184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt bcomp, dcomp, fcomp, OPAL_MAP_PE); 176184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (rc) { 177184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe_err(pe, "OPAL error %ld trying to setup PELT table\n", rc); 178184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return -ENXIO; 179184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 180631ad691b5818291d89af9be607d2fe40be0886eGavin Shan 181631ad691b5818291d89af9be607d2fe40be0886eGavin Shan rc = opal_pci_set_peltv(phb->opal_id, pe->pe_number, 182631ad691b5818291d89af9be607d2fe40be0886eGavin Shan pe->pe_number, OPAL_ADD_PE_TO_DOMAIN); 183631ad691b5818291d89af9be607d2fe40be0886eGavin Shan if (rc) 184631ad691b5818291d89af9be607d2fe40be0886eGavin Shan pe_warn(pe, "OPAL error %d adding self to PELTV\n", rc); 185184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt opal_pci_eeh_freeze_clear(phb->opal_id, pe->pe_number, 186184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt OPAL_EEH_ACTION_CLEAR_FREEZE_ALL); 187184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 188184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Add to all parents PELT-V */ 189184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt while (parent) { 190b72c1f651491e4cd33ddec79c504a49071a512f0Benjamin Herrenschmidt struct pci_dn *pdn = pci_get_pdn(parent); 191184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (pdn && pdn->pe_number != IODA_INVALID_PE) { 192184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt rc = opal_pci_set_peltv(phb->opal_id, pdn->pe_number, 193cee72d5bb48952f2e50acd2610d52ea82f7092c9Benjamin Herrenschmidt pe->pe_number, OPAL_ADD_PE_TO_DOMAIN); 194184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* XXX What to do in case of error ? */ 195184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 196184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt parent = parent->bus->self; 197184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 198184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Setup reverse map */ 199184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt for (rid = pe->rid; rid < rid_end; rid++) 200184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.pe_rmap[rid] = pe->pe_number; 201184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 202184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Setup one MVTs on IODA1 */ 203184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (phb->type == PNV_PHB_IODA1) { 204184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->mve_number = pe->pe_number; 205184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt rc = opal_pci_set_mve(phb->opal_id, pe->mve_number, 206184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->pe_number); 207184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (rc) { 208184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe_err(pe, "OPAL error %ld setting up MVE %d\n", 209184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt rc, pe->mve_number); 210184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->mve_number = -1; 211184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } else { 212184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt rc = opal_pci_set_mve_enable(phb->opal_id, 213cee72d5bb48952f2e50acd2610d52ea82f7092c9Benjamin Herrenschmidt pe->mve_number, OPAL_ENABLE_MVE); 214184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (rc) { 215184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe_err(pe, "OPAL error %ld enabling MVE %d\n", 216184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt rc, pe->mve_number); 217184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->mve_number = -1; 218184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 219184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 220184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } else if (phb->type == PNV_PHB_IODA2) 221184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->mve_number = 0; 222184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 223184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return 0; 224184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 225184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 226cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartmanstatic void pnv_ioda_link_pe_by_weight(struct pnv_phb *phb, 227cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartman struct pnv_ioda_pe *pe) 228184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 229184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct pnv_ioda_pe *lpe; 230184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 2317ebdf956df7961ae6b57b0328e03d33f95f1346fGavin Shan list_for_each_entry(lpe, &phb->ioda.pe_dma_list, dma_link) { 232184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (lpe->dma_weight < pe->dma_weight) { 2337ebdf956df7961ae6b57b0328e03d33f95f1346fGavin Shan list_add_tail(&pe->dma_link, &lpe->dma_link); 234184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return; 235184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 236184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 2377ebdf956df7961ae6b57b0328e03d33f95f1346fGavin Shan list_add_tail(&pe->dma_link, &phb->ioda.pe_dma_list); 238184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 239184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 240184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidtstatic unsigned int pnv_ioda_dma_weight(struct pci_dev *dev) 241184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 242184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* This is quite simplistic. The "base" weight of a device 243184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * is 10. 0 means no DMA is to be accounted for it. 244184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt */ 245184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 246184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* If it's a bridge, no DMA */ 247184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (dev->hdr_type != PCI_HEADER_TYPE_NORMAL) 248184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return 0; 249184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 250184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Reduce the weight of slow USB controllers */ 251184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (dev->class == PCI_CLASS_SERIAL_USB_UHCI || 252184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt dev->class == PCI_CLASS_SERIAL_USB_OHCI || 253184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt dev->class == PCI_CLASS_SERIAL_USB_EHCI) 254184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return 3; 255184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 256184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Increase the weight of RAID (includes Obsidian) */ 257184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if ((dev->class >> 8) == PCI_CLASS_STORAGE_RAID) 258184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return 15; 259184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 260184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Default */ 261184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return 10; 262184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 263184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 264fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan#if 0 265cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartmanstatic struct pnv_ioda_pe *pnv_ioda_setup_dev_PE(struct pci_dev *dev) 266184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 267184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct pci_controller *hose = pci_bus_to_host(dev->bus); 268184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct pnv_phb *phb = hose->private_data; 269b72c1f651491e4cd33ddec79c504a49071a512f0Benjamin Herrenschmidt struct pci_dn *pdn = pci_get_pdn(dev); 270184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct pnv_ioda_pe *pe; 271184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt int pe_num; 272184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 273184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (!pdn) { 274184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_err("%s: Device tree node not associated properly\n", 275184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pci_name(dev)); 276184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return NULL; 277184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 278184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (pdn->pe_number != IODA_INVALID_PE) 279184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return NULL; 280184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 281184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* PE#0 has been pre-set */ 282184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (dev->bus->number == 0) 283184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe_num = 0; 284184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt else 285184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe_num = pnv_ioda_alloc_pe(phb); 286184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (pe_num == IODA_INVALID_PE) { 287184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_warning("%s: Not enough PE# available, disabling device\n", 288184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pci_name(dev)); 289184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return NULL; 290184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 291184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 292184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* NOTE: We get only one ref to the pci_dev for the pdn, not for the 293184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * pointer in the PE data structure, both should be destroyed at the 294184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * same time. However, this needs to be looked at more closely again 295184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * once we actually start removing things (Hotplug, SR-IOV, ...) 296184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * 297184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * At some point we want to remove the PDN completely anyways 298184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt */ 299184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe = &phb->ioda.pe_array[pe_num]; 300184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pci_dev_get(dev); 301184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pdn->pcidev = dev; 302184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pdn->pe_number = pe_num; 303184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->pdev = dev; 304184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->pbus = NULL; 305184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->tce32_seg = -1; 306184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->mve_number = -1; 307184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->rid = dev->bus->number << 8 | pdn->devfn; 308184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 309184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe_info(pe, "Associated device to PE\n"); 310184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 311184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (pnv_ioda_configure_pe(phb, pe)) { 312184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* XXX What do we do here ? */ 313184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (pe_num) 314184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pnv_ioda_free_pe(phb, pe_num); 315184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pdn->pe_number = IODA_INVALID_PE; 316184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->pdev = NULL; 317184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pci_dev_put(dev); 318184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return NULL; 319184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 320184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 321184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Assign a DMA weight to the device */ 322184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->dma_weight = pnv_ioda_dma_weight(dev); 323184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (pe->dma_weight != 0) { 324184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.dma_weight += pe->dma_weight; 325184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.dma_pe_count++; 326184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 327184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 328184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Link the PE */ 329184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pnv_ioda_link_pe_by_weight(phb, pe); 330184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 331184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return pe; 332184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 333fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan#endif /* Useful for SRIOV case */ 334184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 335184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidtstatic void pnv_ioda_setup_same_PE(struct pci_bus *bus, struct pnv_ioda_pe *pe) 336184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 337184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct pci_dev *dev; 338184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 339184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt list_for_each_entry(dev, &bus->devices, bus_list) { 340b72c1f651491e4cd33ddec79c504a49071a512f0Benjamin Herrenschmidt struct pci_dn *pdn = pci_get_pdn(dev); 341184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 342184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (pdn == NULL) { 343184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_warn("%s: No device node associated with device !\n", 344184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pci_name(dev)); 345184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt continue; 346184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 347184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pdn->pcidev = dev; 348184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pdn->pe_number = pe->pe_number; 349184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->dma_weight += pnv_ioda_dma_weight(dev); 350fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan if ((pe->flags & PNV_IODA_PE_BUS_ALL) && dev->subordinate) 351184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pnv_ioda_setup_same_PE(dev->subordinate, pe); 352184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 353184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 354184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 355fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan/* 356fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan * There're 2 types of PCI bus sensitive PEs: One that is compromised of 357fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan * single PCI bus. Another one that contains the primary PCI bus and its 358fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan * subordinate PCI devices and buses. The second type of PE is normally 359fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan * orgiriated by PCIe-to-PCI bridge or PLX switch downstream ports. 360fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan */ 361cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartmanstatic void pnv_ioda_setup_bus_PE(struct pci_bus *bus, int all) 362184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 363fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan struct pci_controller *hose = pci_bus_to_host(bus); 364184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct pnv_phb *phb = hose->private_data; 365184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct pnv_ioda_pe *pe; 366184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt int pe_num; 367184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 368184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe_num = pnv_ioda_alloc_pe(phb); 369184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (pe_num == IODA_INVALID_PE) { 370fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan pr_warning("%s: Not enough PE# available for PCI bus %04x:%02x\n", 371fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan __func__, pci_domain_nr(bus), bus->number); 372184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return; 373184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 374184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 375184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe = &phb->ioda.pe_array[pe_num]; 376fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan pe->flags = (all ? PNV_IODA_PE_BUS_ALL : PNV_IODA_PE_BUS); 377184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->pbus = bus; 378184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->pdev = NULL; 379184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->tce32_seg = -1; 380184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->mve_number = -1; 381b918c62e086b2130a7bae44110ca516ef10bfe5aYinghai Lu pe->rid = bus->busn_res.start << 8; 382184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->dma_weight = 0; 383184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 384fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan if (all) 385fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan pe_info(pe, "Secondary bus %d..%d associated with PE#%d\n", 386fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan bus->busn_res.start, bus->busn_res.end, pe_num); 387fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan else 388fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan pe_info(pe, "Secondary bus %d associated with PE#%d\n", 389fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan bus->busn_res.start, pe_num); 390184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 391184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (pnv_ioda_configure_pe(phb, pe)) { 392184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* XXX What do we do here ? */ 393184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (pe_num) 394184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pnv_ioda_free_pe(phb, pe_num); 395184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->pbus = NULL; 396184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return; 397184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 398184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 399184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Associate it with all child devices */ 400184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pnv_ioda_setup_same_PE(bus, pe); 401184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 4027ebdf956df7961ae6b57b0328e03d33f95f1346fGavin Shan /* Put PE to the list */ 4037ebdf956df7961ae6b57b0328e03d33f95f1346fGavin Shan list_add_tail(&pe->list, &phb->ioda.pe_list); 4047ebdf956df7961ae6b57b0328e03d33f95f1346fGavin Shan 405184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Account for one DMA PE if at least one DMA capable device exist 406184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * below the bridge 407184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt */ 408184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (pe->dma_weight != 0) { 409184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.dma_weight += pe->dma_weight; 410184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.dma_pe_count++; 411184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 412184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 413184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Link the PE */ 414184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pnv_ioda_link_pe_by_weight(phb, pe); 415184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 416184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 417cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartmanstatic void pnv_ioda_setup_PEs(struct pci_bus *bus) 418184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 419184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct pci_dev *dev; 420fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan 421fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan pnv_ioda_setup_bus_PE(bus, 0); 422184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 423184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt list_for_each_entry(dev, &bus->devices, bus_list) { 424fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan if (dev->subordinate) { 425fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan if (pci_pcie_type(dev) == PCI_EXP_TYPE_PCI_BRIDGE) 426fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan pnv_ioda_setup_bus_PE(dev->subordinate, 1); 427fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan else 428fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan pnv_ioda_setup_PEs(dev->subordinate); 429fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan } 430fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan } 431fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan} 432fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan 433fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan/* 434fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan * Configure PEs so that the downstream PCI buses and devices 435fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan * could have their associated PE#. Unfortunately, we didn't 436fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan * figure out the way to identify the PLX bridge yet. So we 437fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan * simply put the PCI bus and the subordinate behind the root 438fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan * port to PE# here. The game rule here is expected to be changed 439fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan * as soon as we can detected PLX bridge correctly. 440fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan */ 441cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartmanstatic void pnv_pci_ioda_setup_PEs(void) 442fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan{ 443fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan struct pci_controller *hose, *tmp; 444fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan 445fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { 446fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan pnv_ioda_setup_PEs(hose->bus); 447184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 448184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 449184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 450959c9bdd5828981d3d226873aba930019798fa65Gavin Shanstatic void pnv_pci_ioda_dma_dev_setup(struct pnv_phb *phb, struct pci_dev *pdev) 451184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 452b72c1f651491e4cd33ddec79c504a49071a512f0Benjamin Herrenschmidt struct pci_dn *pdn = pci_get_pdn(pdev); 453959c9bdd5828981d3d226873aba930019798fa65Gavin Shan struct pnv_ioda_pe *pe; 454184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 455959c9bdd5828981d3d226873aba930019798fa65Gavin Shan /* 456959c9bdd5828981d3d226873aba930019798fa65Gavin Shan * The function can be called while the PE# 457959c9bdd5828981d3d226873aba930019798fa65Gavin Shan * hasn't been assigned. Do nothing for the 458959c9bdd5828981d3d226873aba930019798fa65Gavin Shan * case. 459959c9bdd5828981d3d226873aba930019798fa65Gavin Shan */ 460959c9bdd5828981d3d226873aba930019798fa65Gavin Shan if (!pdn || pdn->pe_number == IODA_INVALID_PE) 461959c9bdd5828981d3d226873aba930019798fa65Gavin Shan return; 462184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 463959c9bdd5828981d3d226873aba930019798fa65Gavin Shan pe = &phb->ioda.pe_array[pdn->pe_number]; 464cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt WARN_ON(get_dma_ops(&pdev->dev) != &dma_iommu_ops); 4653f28c5af3964c11e61e9a58df77cae5ebdb8209eWei Yang set_iommu_table_base(&pdev->dev, &pe->tce32_table); 466184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 467184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 468cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidtstatic int pnv_pci_ioda_dma_set_mask(struct pnv_phb *phb, 469cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt struct pci_dev *pdev, u64 dma_mask) 470cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt{ 471cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt struct pci_dn *pdn = pci_get_pdn(pdev); 472cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt struct pnv_ioda_pe *pe; 473cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt uint64_t top; 474cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt bool bypass = false; 475cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt 476cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt if (WARN_ON(!pdn || pdn->pe_number == IODA_INVALID_PE)) 477cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt return -ENODEV;; 478cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt 479cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt pe = &phb->ioda.pe_array[pdn->pe_number]; 480cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt if (pe->tce_bypass_enabled) { 481cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt top = pe->tce_bypass_base + memblock_end_of_DRAM() - 1; 482cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt bypass = (dma_mask >= top); 483cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt } 484cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt 485cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt if (bypass) { 486cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt dev_info(&pdev->dev, "Using 64-bit DMA iommu bypass\n"); 487cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt set_dma_ops(&pdev->dev, &dma_direct_ops); 488cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt set_dma_offset(&pdev->dev, pe->tce_bypass_base); 489cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt } else { 490cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt dev_info(&pdev->dev, "Using 32-bit DMA via iommu\n"); 491cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt set_dma_ops(&pdev->dev, &dma_iommu_ops); 492cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt set_iommu_table_base(&pdev->dev, &pe->tce32_table); 493cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt } 494cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt return 0; 495cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt} 496cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt 49774251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidtstatic void pnv_ioda_setup_bus_dma(struct pnv_ioda_pe *pe, struct pci_bus *bus) 49874251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidt{ 49974251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidt struct pci_dev *dev; 50074251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidt 50174251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidt list_for_each_entry(dev, &bus->devices, bus_list) { 502d905c5df9aef38d63df268f6f5e7b13894f626d3Alexey Kardashevskiy set_iommu_table_base_and_group(&dev->dev, &pe->tce32_table); 50374251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidt if (dev->subordinate) 50474251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidt pnv_ioda_setup_bus_dma(pe, dev->subordinate); 50574251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidt } 50674251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidt} 50774251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidt 5088e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiystatic void pnv_pci_ioda1_tce_invalidate(struct pnv_ioda_pe *pe, 5098e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy struct iommu_table *tbl, 5103ad26e5c4459d3793ad65bc8929037c70515df83Benjamin Herrenschmidt __be64 *startp, __be64 *endp, bool rm) 5114cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan{ 5123ad26e5c4459d3793ad65bc8929037c70515df83Benjamin Herrenschmidt __be64 __iomem *invalidate = rm ? 5133ad26e5c4459d3793ad65bc8929037c70515df83Benjamin Herrenschmidt (__be64 __iomem *)pe->tce_inval_reg_phys : 5143ad26e5c4459d3793ad65bc8929037c70515df83Benjamin Herrenschmidt (__be64 __iomem *)tbl->it_index; 5154cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan unsigned long start, end, inc; 516b0376c9b08d627aac7cc282138a40edebae7b9aeAlexey Kardashevskiy const unsigned shift = tbl->it_page_shift; 5174cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan 5184cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan start = __pa(startp); 5194cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan end = __pa(endp); 5204cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan 5214cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan /* BML uses this case for p6/p7/galaxy2: Shift addr and put in node */ 5224cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan if (tbl->it_busno) { 523b0376c9b08d627aac7cc282138a40edebae7b9aeAlexey Kardashevskiy start <<= shift; 524b0376c9b08d627aac7cc282138a40edebae7b9aeAlexey Kardashevskiy end <<= shift; 525b0376c9b08d627aac7cc282138a40edebae7b9aeAlexey Kardashevskiy inc = 128ull << shift; 5264cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan start |= tbl->it_busno; 5274cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan end |= tbl->it_busno; 5284cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan } else if (tbl->it_type & TCE_PCI_SWINV_PAIR) { 5294cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan /* p7ioc-style invalidation, 2 TCEs per write */ 5304cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan start |= (1ull << 63); 5314cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan end |= (1ull << 63); 5324cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan inc = 16; 5334cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan } else { 5344cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan /* Default (older HW) */ 5354cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan inc = 128; 5364cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan } 5374cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan 5384cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan end |= inc - 1; /* round up end to be different than start */ 5394cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan 5404cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan mb(); /* Ensure above stores are visible */ 5414cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan while (start <= end) { 5428e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy if (rm) 5433ad26e5c4459d3793ad65bc8929037c70515df83Benjamin Herrenschmidt __raw_rm_writeq(cpu_to_be64(start), invalidate); 5448e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy else 5453ad26e5c4459d3793ad65bc8929037c70515df83Benjamin Herrenschmidt __raw_writeq(cpu_to_be64(start), invalidate); 5464cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan start += inc; 5474cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan } 5484cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan 5494cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan /* 5504cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan * The iommu layer will do another mb() for us on build() 5514cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan * and we don't care on free() 5524cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan */ 5534cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan} 5544cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan 5554cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shanstatic void pnv_pci_ioda2_tce_invalidate(struct pnv_ioda_pe *pe, 5564cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan struct iommu_table *tbl, 5573ad26e5c4459d3793ad65bc8929037c70515df83Benjamin Herrenschmidt __be64 *startp, __be64 *endp, bool rm) 5584cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan{ 5594cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan unsigned long start, end, inc; 5603ad26e5c4459d3793ad65bc8929037c70515df83Benjamin Herrenschmidt __be64 __iomem *invalidate = rm ? 5613ad26e5c4459d3793ad65bc8929037c70515df83Benjamin Herrenschmidt (__be64 __iomem *)pe->tce_inval_reg_phys : 5623ad26e5c4459d3793ad65bc8929037c70515df83Benjamin Herrenschmidt (__be64 __iomem *)tbl->it_index; 563b0376c9b08d627aac7cc282138a40edebae7b9aeAlexey Kardashevskiy const unsigned shift = tbl->it_page_shift; 5644cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan 5654cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan /* We'll invalidate DMA address in PE scope */ 566b0376c9b08d627aac7cc282138a40edebae7b9aeAlexey Kardashevskiy start = 0x2ull << 60; 5674cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan start |= (pe->pe_number & 0xFF); 5684cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan end = start; 5694cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan 5704cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan /* Figure out the start, end and step */ 5714cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan inc = tbl->it_offset + (((u64)startp - tbl->it_base) / sizeof(u64)); 572b0376c9b08d627aac7cc282138a40edebae7b9aeAlexey Kardashevskiy start |= (inc << shift); 5734cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan inc = tbl->it_offset + (((u64)endp - tbl->it_base) / sizeof(u64)); 574b0376c9b08d627aac7cc282138a40edebae7b9aeAlexey Kardashevskiy end |= (inc << shift); 575b0376c9b08d627aac7cc282138a40edebae7b9aeAlexey Kardashevskiy inc = (0x1ull << shift); 5764cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan mb(); 5774cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan 5784cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan while (start <= end) { 5798e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy if (rm) 5803ad26e5c4459d3793ad65bc8929037c70515df83Benjamin Herrenschmidt __raw_rm_writeq(cpu_to_be64(start), invalidate); 5818e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy else 5823ad26e5c4459d3793ad65bc8929037c70515df83Benjamin Herrenschmidt __raw_writeq(cpu_to_be64(start), invalidate); 5834cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan start += inc; 5844cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan } 5854cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan} 5864cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan 5874cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shanvoid pnv_pci_ioda_tce_invalidate(struct iommu_table *tbl, 5883ad26e5c4459d3793ad65bc8929037c70515df83Benjamin Herrenschmidt __be64 *startp, __be64 *endp, bool rm) 5894cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan{ 5904cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan struct pnv_ioda_pe *pe = container_of(tbl, struct pnv_ioda_pe, 5914cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan tce32_table); 5924cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan struct pnv_phb *phb = pe->phb; 5934cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan 5944cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan if (phb->type == PNV_PHB_IODA1) 5958e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy pnv_pci_ioda1_tce_invalidate(pe, tbl, startp, endp, rm); 5964cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan else 5978e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy pnv_pci_ioda2_tce_invalidate(pe, tbl, startp, endp, rm); 5984cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan} 5994cce95508bfeaa1cab74b08558993c81436dcbe0Gavin Shan 600cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartmanstatic void pnv_pci_ioda_setup_dma_pe(struct pnv_phb *phb, 601cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartman struct pnv_ioda_pe *pe, unsigned int base, 602cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartman unsigned int segs) 603184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 604184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 605184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct page *tce_mem = NULL; 606184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt const __be64 *swinvp; 607184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct iommu_table *tbl; 608184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt unsigned int i; 609184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt int64_t rc; 610184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt void *addr; 611184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 612184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* 256M DMA window, 4K TCE pages, 8 bytes TCE */ 613184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#define TCE32_TABLE_SIZE ((0x10000000 / 0x1000) * 8) 614184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 615184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* XXX FIXME: Handle 64-bit only DMA devices */ 616184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* XXX FIXME: Provide 64-bit DMA facilities & non-4K TCE tables etc.. */ 617184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* XXX FIXME: Allocate multi-level tables on PHB3 */ 618184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 619184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* We shouldn't already have a 32-bit DMA associated */ 620184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (WARN_ON(pe->tce32_seg >= 0)) 621184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return; 622184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 623184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Grab a 32-bit TCE table */ 624184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->tce32_seg = base; 625184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe_info(pe, " Setting up 32-bit TCE table at %08x..%08x\n", 626184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt (base << 28), ((base + segs) << 28) - 1); 627184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 628184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* XXX Currently, we allocate one big contiguous table for the 629184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * TCEs. We only really need one chunk per 256M of TCE space 630184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * (ie per segment) but that's an optimization for later, it 631184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * requires some added smarts with our get/put_tce implementation 632184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt */ 633184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt tce_mem = alloc_pages_node(phb->hose->node, GFP_KERNEL, 634184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt get_order(TCE32_TABLE_SIZE * segs)); 635184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (!tce_mem) { 636184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe_err(pe, " Failed to allocate a 32-bit TCE memory\n"); 637184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt goto fail; 638184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 639184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt addr = page_address(tce_mem); 640184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt memset(addr, 0, TCE32_TABLE_SIZE * segs); 641184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 642184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Configure HW */ 643184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt for (i = 0; i < segs; i++) { 644184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt rc = opal_pci_map_pe_dma_window(phb->opal_id, 645184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->pe_number, 646184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt base + i, 1, 647184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt __pa(addr) + TCE32_TABLE_SIZE * i, 648184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt TCE32_TABLE_SIZE, 0x1000); 649184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (rc) { 650184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe_err(pe, " Failed to configure 32-bit TCE table," 651184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt " err %ld\n", rc); 652184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt goto fail; 653184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 654184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 655184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 656184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Setup linux iommu table */ 657184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt tbl = &pe->tce32_table; 658184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pnv_pci_setup_iommu_table(tbl, addr, TCE32_TABLE_SIZE * segs, 6598fa5d4547eb69b7ed710cb03486d33a3a5dc2eadAlexey Kardashevskiy base << 28, IOMMU_PAGE_SHIFT_4K); 660184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 661184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* OPAL variant of P7IOC SW invalidated TCEs */ 662184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt swinvp = of_get_property(phb->hose->dn, "ibm,opal-tce-kill", NULL); 663184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (swinvp) { 664184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* We need a couple more fields -- an address and a data 665184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * to or. Since the bus is only printed out on table free 666184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * errors, and on the first pass the data will be a relative 667184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * bus number, print that out instead. 668184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt */ 6698e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy pe->tce_inval_reg_phys = be64_to_cpup(swinvp); 6708e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy tbl->it_index = (unsigned long)ioremap(pe->tce_inval_reg_phys, 6718e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy 8); 67265fd766b990f79c9b541050a3f868ad058ad0d69Gavin Shan tbl->it_type |= (TCE_PCI_SWINV_CREATE | 67365fd766b990f79c9b541050a3f868ad058ad0d69Gavin Shan TCE_PCI_SWINV_FREE | 67465fd766b990f79c9b541050a3f868ad058ad0d69Gavin Shan TCE_PCI_SWINV_PAIR); 675184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 676184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt iommu_init_table(tbl, phb->hose->node); 677e9bc03fe2274bfdac8870025f81571ebfbc92c78Gavin Shan iommu_register_group(tbl, phb->hose->global_number, pe->pe_number); 678184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 67974251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidt if (pe->pdev) 680d905c5df9aef38d63df268f6f5e7b13894f626d3Alexey Kardashevskiy set_iommu_table_base_and_group(&pe->pdev->dev, tbl); 68174251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidt else 68274251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidt pnv_ioda_setup_bus_dma(pe, pe->pbus); 68374251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidt 684184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return; 685184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt fail: 686184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* XXX Failure: Try to fallback to 64-bit only ? */ 687184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (pe->tce32_seg >= 0) 688184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe->tce32_seg = -1; 689184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (tce_mem) 690184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt __free_pages(tce_mem, get_order(TCE32_TABLE_SIZE * segs)); 691184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 692184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 693cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidtstatic void pnv_pci_ioda2_set_bypass(struct iommu_table *tbl, bool enable) 694cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt{ 695cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt struct pnv_ioda_pe *pe = container_of(tbl, struct pnv_ioda_pe, 696cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt tce32_table); 697cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt uint16_t window_id = (pe->pe_number << 1 ) + 1; 698cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt int64_t rc; 699cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt 700cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt pe_info(pe, "%sabling 64-bit DMA bypass\n", enable ? "En" : "Dis"); 701cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt if (enable) { 702cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt phys_addr_t top = memblock_end_of_DRAM(); 703cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt 704cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt top = roundup_pow_of_two(top); 705cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt rc = opal_pci_map_pe_dma_window_real(pe->phb->opal_id, 706cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt pe->pe_number, 707cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt window_id, 708cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt pe->tce_bypass_base, 709cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt top); 710cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt } else { 711cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt rc = opal_pci_map_pe_dma_window_real(pe->phb->opal_id, 712cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt pe->pe_number, 713cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt window_id, 714cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt pe->tce_bypass_base, 715cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt 0); 716cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt 717cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt /* 718cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt * We might want to reset the DMA ops of all devices on 719cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt * this PE. However in theory, that shouldn't be necessary 720cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt * as this is used for VFIO/KVM pass-through and the device 721cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt * hasn't yet been returned to its kernel driver 722cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt */ 723cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt } 724cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt if (rc) 725cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt pe_err(pe, "OPAL error %lld configuring bypass window\n", rc); 726cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt else 727cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt pe->tce_bypass_enabled = enable; 728cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt} 729cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt 730cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidtstatic void pnv_pci_ioda2_setup_bypass_pe(struct pnv_phb *phb, 731cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt struct pnv_ioda_pe *pe) 732cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt{ 733cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt /* TVE #1 is selected by PCI address bit 59 */ 734cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt pe->tce_bypass_base = 1ull << 59; 735cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt 736cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt /* Install set_bypass callback for VFIO */ 737cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt pe->tce32_table.set_bypass = pnv_pci_ioda2_set_bypass; 738cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt 739cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt /* Enable bypass by default */ 740cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt pnv_pci_ioda2_set_bypass(&pe->tce32_table, true); 741cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt} 742cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt 743373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shanstatic void pnv_pci_ioda2_setup_dma_pe(struct pnv_phb *phb, 744373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan struct pnv_ioda_pe *pe) 745373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan{ 746373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan struct page *tce_mem = NULL; 747373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan void *addr; 748373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan const __be64 *swinvp; 749373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan struct iommu_table *tbl; 750373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan unsigned int tce_table_size, end; 751373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan int64_t rc; 752373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan 753373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan /* We shouldn't already have a 32-bit DMA associated */ 754373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan if (WARN_ON(pe->tce32_seg >= 0)) 755373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan return; 756373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan 757373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan /* The PE will reserve all possible 32-bits space */ 758373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan pe->tce32_seg = 0; 759373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan end = (1 << ilog2(phb->ioda.m32_pci_base)); 760373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan tce_table_size = (end / 0x1000) * 8; 761373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan pe_info(pe, "Setting up 32-bit TCE table at 0..%08x\n", 762373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan end); 763373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan 764373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan /* Allocate TCE table */ 765373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan tce_mem = alloc_pages_node(phb->hose->node, GFP_KERNEL, 766373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan get_order(tce_table_size)); 767373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan if (!tce_mem) { 768373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan pe_err(pe, "Failed to allocate a 32-bit TCE memory\n"); 769373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan goto fail; 770373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan } 771373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan addr = page_address(tce_mem); 772373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan memset(addr, 0, tce_table_size); 773373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan 774373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan /* 775373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan * Map TCE table through TVT. The TVE index is the PE number 776373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan * shifted by 1 bit for 32-bits DMA space. 777373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan */ 778373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan rc = opal_pci_map_pe_dma_window(phb->opal_id, pe->pe_number, 779373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan pe->pe_number << 1, 1, __pa(addr), 780373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan tce_table_size, 0x1000); 781373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan if (rc) { 782373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan pe_err(pe, "Failed to configure 32-bit TCE table," 783373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan " err %ld\n", rc); 784373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan goto fail; 785373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan } 786373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan 787373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan /* Setup linux iommu table */ 788373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan tbl = &pe->tce32_table; 7898fa5d4547eb69b7ed710cb03486d33a3a5dc2eadAlexey Kardashevskiy pnv_pci_setup_iommu_table(tbl, addr, tce_table_size, 0, 7908fa5d4547eb69b7ed710cb03486d33a3a5dc2eadAlexey Kardashevskiy IOMMU_PAGE_SHIFT_4K); 791373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan 792373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan /* OPAL variant of PHB3 invalidated TCEs */ 793373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan swinvp = of_get_property(phb->hose->dn, "ibm,opal-tce-kill", NULL); 794373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan if (swinvp) { 795373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan /* We need a couple more fields -- an address and a data 796373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan * to or. Since the bus is only printed out on table free 797373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan * errors, and on the first pass the data will be a relative 798373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan * bus number, print that out instead. 799373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan */ 8008e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy pe->tce_inval_reg_phys = be64_to_cpup(swinvp); 8018e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy tbl->it_index = (unsigned long)ioremap(pe->tce_inval_reg_phys, 8028e0a1611cb891e72a9affc4a8ee4795c634896a6Alexey Kardashevskiy 8); 80365fd766b990f79c9b541050a3f868ad058ad0d69Gavin Shan tbl->it_type |= (TCE_PCI_SWINV_CREATE | TCE_PCI_SWINV_FREE); 804373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan } 805373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan iommu_init_table(tbl, phb->hose->node); 806e9bc03fe2274bfdac8870025f81571ebfbc92c78Gavin Shan iommu_register_group(tbl, phb->hose->global_number, pe->pe_number); 807373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan 80874251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidt if (pe->pdev) 809d905c5df9aef38d63df268f6f5e7b13894f626d3Alexey Kardashevskiy set_iommu_table_base_and_group(&pe->pdev->dev, tbl); 81074251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidt else 81174251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidt pnv_ioda_setup_bus_dma(pe, pe->pbus); 81274251fe21bfa9310ddba9e0436d1fcf389e602eeBenjamin Herrenschmidt 813cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt /* Also create a bypass window */ 814cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt pnv_pci_ioda2_setup_bypass_pe(phb, pe); 815373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan return; 816373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shanfail: 817373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan if (pe->tce32_seg >= 0) 818373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan pe->tce32_seg = -1; 819373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan if (tce_mem) 820373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan __free_pages(tce_mem, get_order(tce_table_size)); 821373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan} 822373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan 823cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartmanstatic void pnv_ioda_setup_dma(struct pnv_phb *phb) 824184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 825184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct pci_controller *hose = phb->hose; 826184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt unsigned int residual, remaining, segs, tw, base; 827184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct pnv_ioda_pe *pe; 828184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 829184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* If we have more PE# than segments available, hand out one 830184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * per PE until we run out and let the rest fail. If not, 831184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * then we assign at least one segment per PE, plus more based 832184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * on the amount of devices under that PE 833184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt */ 834184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (phb->ioda.dma_pe_count > phb->ioda.tce32_count) 835184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt residual = 0; 836184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt else 837184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt residual = phb->ioda.tce32_count - 838184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.dma_pe_count; 839184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 840184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_info("PCI: Domain %04x has %ld available 32-bit DMA segments\n", 841184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt hose->global_number, phb->ioda.tce32_count); 842184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_info("PCI: %d PE# for a total weight of %d\n", 843184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.dma_pe_count, phb->ioda.dma_weight); 844184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 845184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Walk our PE list and configure their DMA segments, hand them 846184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * out one base segment plus any residual segments based on 847184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * weight 848184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt */ 849184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt remaining = phb->ioda.tce32_count; 850184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt tw = phb->ioda.dma_weight; 851184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt base = 0; 8527ebdf956df7961ae6b57b0328e03d33f95f1346fGavin Shan list_for_each_entry(pe, &phb->ioda.pe_dma_list, dma_link) { 853184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (!pe->dma_weight) 854184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt continue; 855184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (!remaining) { 856184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pe_warn(pe, "No DMA32 resources available\n"); 857184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt continue; 858184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 859184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt segs = 1; 860184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (residual) { 861184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt segs += ((pe->dma_weight * residual) + (tw / 2)) / tw; 862184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (segs > remaining) 863184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt segs = remaining; 864184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 865373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan 866373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan /* 867373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan * For IODA2 compliant PHB3, we needn't care about the weight. 868373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan * The all available 32-bits DMA space will be assigned to 869373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan * the specific PE. 870373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan */ 871373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan if (phb->type == PNV_PHB_IODA1) { 872373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan pe_info(pe, "DMA weight %d, assigned %d DMA32 segments\n", 873373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan pe->dma_weight, segs); 874373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan pnv_pci_ioda_setup_dma_pe(phb, pe, base, segs); 875373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan } else { 876373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan pe_info(pe, "Assign DMA32 space\n"); 877373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan segs = 0; 878373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan pnv_pci_ioda2_setup_dma_pe(phb, pe); 879373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan } 880373f565741a3636954cd87034d9ebb1dc7bfd716Gavin Shan 881184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt remaining -= segs; 882184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt base += segs; 883184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 884184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 885184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 886184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#ifdef CONFIG_PCI_MSI 887137436c9a6ee385c883db09e41af763888ee7642Gavin Shanstatic void pnv_ioda2_msi_eoi(struct irq_data *d) 888137436c9a6ee385c883db09e41af763888ee7642Gavin Shan{ 889137436c9a6ee385c883db09e41af763888ee7642Gavin Shan unsigned int hw_irq = (unsigned int)irqd_to_hwirq(d); 890137436c9a6ee385c883db09e41af763888ee7642Gavin Shan struct irq_chip *chip = irq_data_get_irq_chip(d); 891137436c9a6ee385c883db09e41af763888ee7642Gavin Shan struct pnv_phb *phb = container_of(chip, struct pnv_phb, 892137436c9a6ee385c883db09e41af763888ee7642Gavin Shan ioda.irq_chip); 893137436c9a6ee385c883db09e41af763888ee7642Gavin Shan int64_t rc; 894137436c9a6ee385c883db09e41af763888ee7642Gavin Shan 895137436c9a6ee385c883db09e41af763888ee7642Gavin Shan rc = opal_pci_msi_eoi(phb->opal_id, hw_irq); 896137436c9a6ee385c883db09e41af763888ee7642Gavin Shan WARN_ON_ONCE(rc); 897137436c9a6ee385c883db09e41af763888ee7642Gavin Shan 898137436c9a6ee385c883db09e41af763888ee7642Gavin Shan icp_native_eoi(d); 899137436c9a6ee385c883db09e41af763888ee7642Gavin Shan} 900137436c9a6ee385c883db09e41af763888ee7642Gavin Shan 901184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidtstatic int pnv_pci_ioda_msi_setup(struct pnv_phb *phb, struct pci_dev *dev, 902137436c9a6ee385c883db09e41af763888ee7642Gavin Shan unsigned int hwirq, unsigned int virq, 903137436c9a6ee385c883db09e41af763888ee7642Gavin Shan unsigned int is_64, struct msi_msg *msg) 904184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 905184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct pnv_ioda_pe *pe = pnv_ioda_get_pe(dev); 906b72c1f651491e4cd33ddec79c504a49071a512f0Benjamin Herrenschmidt struct pci_dn *pdn = pci_get_pdn(dev); 907137436c9a6ee385c883db09e41af763888ee7642Gavin Shan struct irq_data *idata; 908137436c9a6ee385c883db09e41af763888ee7642Gavin Shan struct irq_chip *ichip; 909184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt unsigned int xive_num = hwirq - phb->msi_base; 9103a1a46612d4882462e8d06866df717e1707abbbaBenjamin Herrenschmidt __be32 data; 911184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt int rc; 912184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 913184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* No PE assigned ? bail out ... no MSI for you ! */ 914184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (pe == NULL) 915184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return -ENXIO; 916184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 917184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Check if we have an MVE */ 918184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (pe->mve_number < 0) 919184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return -ENXIO; 920184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 921b72c1f651491e4cd33ddec79c504a49071a512f0Benjamin Herrenschmidt /* Force 32-bit MSI on some broken devices */ 922b72c1f651491e4cd33ddec79c504a49071a512f0Benjamin Herrenschmidt if (pdn && pdn->force_32bit_msi) 923b72c1f651491e4cd33ddec79c504a49071a512f0Benjamin Herrenschmidt is_64 = 0; 924b72c1f651491e4cd33ddec79c504a49071a512f0Benjamin Herrenschmidt 925184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Assign XIVE to PE */ 926184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt rc = opal_pci_set_xive_pe(phb->opal_id, pe->pe_number, xive_num); 927184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (rc) { 928184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_warn("%s: OPAL error %d setting XIVE %d PE\n", 929184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pci_name(dev), rc, xive_num); 930184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return -EIO; 931184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 932184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 933184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (is_64) { 9343a1a46612d4882462e8d06866df717e1707abbbaBenjamin Herrenschmidt __be64 addr64; 9353a1a46612d4882462e8d06866df717e1707abbbaBenjamin Herrenschmidt 936184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt rc = opal_get_msi_64(phb->opal_id, pe->mve_number, xive_num, 1, 937184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt &addr64, &data); 938184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (rc) { 939184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_warn("%s: OPAL error %d getting 64-bit MSI data\n", 940184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pci_name(dev), rc); 941184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return -EIO; 942184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 9433a1a46612d4882462e8d06866df717e1707abbbaBenjamin Herrenschmidt msg->address_hi = be64_to_cpu(addr64) >> 32; 9443a1a46612d4882462e8d06866df717e1707abbbaBenjamin Herrenschmidt msg->address_lo = be64_to_cpu(addr64) & 0xfffffffful; 945184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } else { 9463a1a46612d4882462e8d06866df717e1707abbbaBenjamin Herrenschmidt __be32 addr32; 9473a1a46612d4882462e8d06866df717e1707abbbaBenjamin Herrenschmidt 948184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt rc = opal_get_msi_32(phb->opal_id, pe->mve_number, xive_num, 1, 949184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt &addr32, &data); 950184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (rc) { 951184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_warn("%s: OPAL error %d getting 32-bit MSI data\n", 952184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pci_name(dev), rc); 953184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return -EIO; 954184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 955184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt msg->address_hi = 0; 9563a1a46612d4882462e8d06866df717e1707abbbaBenjamin Herrenschmidt msg->address_lo = be32_to_cpu(addr32); 957184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 9583a1a46612d4882462e8d06866df717e1707abbbaBenjamin Herrenschmidt msg->data = be32_to_cpu(data); 959184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 960137436c9a6ee385c883db09e41af763888ee7642Gavin Shan /* 961137436c9a6ee385c883db09e41af763888ee7642Gavin Shan * Change the IRQ chip for the MSI interrupts on PHB3. 962137436c9a6ee385c883db09e41af763888ee7642Gavin Shan * The corresponding IRQ chip should be populated for 963137436c9a6ee385c883db09e41af763888ee7642Gavin Shan * the first time. 964137436c9a6ee385c883db09e41af763888ee7642Gavin Shan */ 965137436c9a6ee385c883db09e41af763888ee7642Gavin Shan if (phb->type == PNV_PHB_IODA2) { 966137436c9a6ee385c883db09e41af763888ee7642Gavin Shan if (!phb->ioda.irq_chip_init) { 967137436c9a6ee385c883db09e41af763888ee7642Gavin Shan idata = irq_get_irq_data(virq); 968137436c9a6ee385c883db09e41af763888ee7642Gavin Shan ichip = irq_data_get_irq_chip(idata); 969137436c9a6ee385c883db09e41af763888ee7642Gavin Shan phb->ioda.irq_chip_init = 1; 970137436c9a6ee385c883db09e41af763888ee7642Gavin Shan phb->ioda.irq_chip = *ichip; 971137436c9a6ee385c883db09e41af763888ee7642Gavin Shan phb->ioda.irq_chip.irq_eoi = pnv_ioda2_msi_eoi; 972137436c9a6ee385c883db09e41af763888ee7642Gavin Shan } 973137436c9a6ee385c883db09e41af763888ee7642Gavin Shan 974137436c9a6ee385c883db09e41af763888ee7642Gavin Shan irq_set_chip(virq, &phb->ioda.irq_chip); 975137436c9a6ee385c883db09e41af763888ee7642Gavin Shan } 976137436c9a6ee385c883db09e41af763888ee7642Gavin Shan 977184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_devel("%s: %s-bit MSI on hwirq %x (xive #%d)," 978184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt " address=%x_%08x data=%x PE# %d\n", 979184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pci_name(dev), is_64 ? "64" : "32", hwirq, xive_num, 980184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt msg->address_hi, msg->address_lo, data, pe->pe_number); 981184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 982184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return 0; 983184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 984184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 985184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidtstatic void pnv_pci_init_ioda_msis(struct pnv_phb *phb) 986184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 987fb1b55d654a7038ca6337fbf55839a308c9bc1a7Gavin Shan unsigned int count; 988184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt const __be32 *prop = of_get_property(phb->hose->dn, 989184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt "ibm,opal-msi-ranges", NULL); 990184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (!prop) { 991184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* BML Fallback */ 992184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt prop = of_get_property(phb->hose->dn, "msi-ranges", NULL); 993184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 994184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (!prop) 995184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return; 996184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 997184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->msi_base = be32_to_cpup(prop); 998fb1b55d654a7038ca6337fbf55839a308c9bc1a7Gavin Shan count = be32_to_cpup(prop + 1); 999fb1b55d654a7038ca6337fbf55839a308c9bc1a7Gavin Shan if (msi_bitmap_alloc(&phb->msi_bmp, count, phb->hose->dn)) { 1000184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_err("PCI %d: Failed to allocate MSI bitmap !\n", 1001184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->hose->global_number); 1002184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return; 1003184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 1004fb1b55d654a7038ca6337fbf55839a308c9bc1a7Gavin Shan 1005184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->msi_setup = pnv_pci_ioda_msi_setup; 1006184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->msi32_support = 1; 1007184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_info(" Allocated bitmap for %d MSIs (base IRQ 0x%x)\n", 1008fb1b55d654a7038ca6337fbf55839a308c9bc1a7Gavin Shan count, phb->msi_base); 1009184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 1010184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#else 1011184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidtstatic void pnv_pci_init_ioda_msis(struct pnv_phb *phb) { } 1012184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#endif /* CONFIG_PCI_MSI */ 1013184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 101411685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan/* 101511685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan * This function is supposed to be called on basis of PE from top 101611685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan * to bottom style. So the the I/O or MMIO segment assigned to 101711685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan * parent PE could be overrided by its child PEs if necessary. 101811685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan */ 1019cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartmanstatic void pnv_ioda_setup_pe_seg(struct pci_controller *hose, 1020cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartman struct pnv_ioda_pe *pe) 102111685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan{ 102211685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan struct pnv_phb *phb = hose->private_data; 102311685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan struct pci_bus_region region; 102411685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan struct resource *res; 102511685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan int i, index; 102611685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan int rc; 102711685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan 102811685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan /* 102911685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan * NOTE: We only care PCI bus based PE for now. For PCI 103011685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan * device based PE, for example SRIOV sensitive VF should 103111685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan * be figured out later. 103211685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan */ 103311685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan BUG_ON(!(pe->flags & (PNV_IODA_PE_BUS | PNV_IODA_PE_BUS_ALL))); 103411685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan 103511685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan pci_bus_for_each_resource(pe->pbus, res, i) { 103611685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan if (!res || !res->flags || 103711685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan res->start > res->end) 103811685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan continue; 103911685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan 104011685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan if (res->flags & IORESOURCE_IO) { 104111685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan region.start = res->start - phb->ioda.io_pci_base; 104211685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan region.end = res->end - phb->ioda.io_pci_base; 104311685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan index = region.start / phb->ioda.io_segsize; 104411685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan 104511685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan while (index < phb->ioda.total_pe && 104611685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan region.start <= region.end) { 104711685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan phb->ioda.io_segmap[index] = pe->pe_number; 104811685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan rc = opal_pci_map_pe_mmio_window(phb->opal_id, 104911685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan pe->pe_number, OPAL_IO_WINDOW_TYPE, 0, index); 105011685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan if (rc != OPAL_SUCCESS) { 105111685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan pr_err("%s: OPAL error %d when mapping IO " 105211685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan "segment #%d to PE#%d\n", 105311685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan __func__, rc, index, pe->pe_number); 105411685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan break; 105511685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan } 105611685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan 105711685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan region.start += phb->ioda.io_segsize; 105811685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan index++; 105911685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan } 106011685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan } else if (res->flags & IORESOURCE_MEM) { 10613fd47f063b17692e843128e2abda3e697df42198Benjamin Herrenschmidt /* WARNING: Assumes M32 is mem region 0 in PHB. We need to 10623fd47f063b17692e843128e2abda3e697df42198Benjamin Herrenschmidt * harden that algorithm when we start supporting M64 10633fd47f063b17692e843128e2abda3e697df42198Benjamin Herrenschmidt */ 106411685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan region.start = res->start - 10653fd47f063b17692e843128e2abda3e697df42198Benjamin Herrenschmidt hose->mem_offset[0] - 106611685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan phb->ioda.m32_pci_base; 106711685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan region.end = res->end - 10683fd47f063b17692e843128e2abda3e697df42198Benjamin Herrenschmidt hose->mem_offset[0] - 106911685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan phb->ioda.m32_pci_base; 107011685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan index = region.start / phb->ioda.m32_segsize; 107111685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan 107211685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan while (index < phb->ioda.total_pe && 107311685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan region.start <= region.end) { 107411685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan phb->ioda.m32_segmap[index] = pe->pe_number; 107511685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan rc = opal_pci_map_pe_mmio_window(phb->opal_id, 107611685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan pe->pe_number, OPAL_M32_WINDOW_TYPE, 0, index); 107711685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan if (rc != OPAL_SUCCESS) { 107811685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan pr_err("%s: OPAL error %d when mapping M32 " 107911685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan "segment#%d to PE#%d", 108011685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan __func__, rc, index, pe->pe_number); 108111685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan break; 108211685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan } 108311685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan 108411685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan region.start += phb->ioda.m32_segsize; 108511685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan index++; 108611685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan } 108711685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan } 108811685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan } 108911685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan} 109011685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan 1091cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartmanstatic void pnv_pci_ioda_setup_seg(void) 109211685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan{ 109311685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan struct pci_controller *tmp, *hose; 109411685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan struct pnv_phb *phb; 109511685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan struct pnv_ioda_pe *pe; 109611685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan 109711685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { 109811685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan phb = hose->private_data; 109911685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan list_for_each_entry(pe, &phb->ioda.pe_list, list) { 110011685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan pnv_ioda_setup_pe_seg(hose, pe); 110111685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan } 110211685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan } 110311685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan} 110411685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan 1105cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartmanstatic void pnv_pci_ioda_setup_DMA(void) 110613395c48c3def3e5afee7bd7a851f901374db5ecGavin Shan{ 110713395c48c3def3e5afee7bd7a851f901374db5ecGavin Shan struct pci_controller *hose, *tmp; 1108db1266c852611436daa01a89c272722ec39cf916Gavin Shan struct pnv_phb *phb; 110913395c48c3def3e5afee7bd7a851f901374db5ecGavin Shan 111013395c48c3def3e5afee7bd7a851f901374db5ecGavin Shan list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { 111113395c48c3def3e5afee7bd7a851f901374db5ecGavin Shan pnv_ioda_setup_dma(hose->private_data); 1112db1266c852611436daa01a89c272722ec39cf916Gavin Shan 1113db1266c852611436daa01a89c272722ec39cf916Gavin Shan /* Mark the PHB initialization done */ 1114db1266c852611436daa01a89c272722ec39cf916Gavin Shan phb = hose->private_data; 1115db1266c852611436daa01a89c272722ec39cf916Gavin Shan phb->initialized = 1; 111613395c48c3def3e5afee7bd7a851f901374db5ecGavin Shan } 111713395c48c3def3e5afee7bd7a851f901374db5ecGavin Shan} 111813395c48c3def3e5afee7bd7a851f901374db5ecGavin Shan 111937c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shanstatic void pnv_pci_ioda_create_dbgfs(void) 112037c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan{ 112137c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan#ifdef CONFIG_DEBUG_FS 112237c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan struct pci_controller *hose, *tmp; 112337c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan struct pnv_phb *phb; 112437c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan char name[16]; 112537c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan 112637c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { 112737c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan phb = hose->private_data; 112837c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan 112937c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan sprintf(name, "PCI%04x", hose->global_number); 113037c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan phb->dbgfs = debugfs_create_dir(name, powerpc_debugfs_root); 113137c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan if (!phb->dbgfs) 113237c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan pr_warning("%s: Error on creating debugfs on PHB#%x\n", 113337c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan __func__, hose->global_number); 113437c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan } 113537c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan#endif /* CONFIG_DEBUG_FS */ 113637c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan} 113737c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan 1138cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartmanstatic void pnv_pci_ioda_fixup(void) 1139fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan{ 1140fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan pnv_pci_ioda_setup_PEs(); 114111685becbf1a962759ae94a0fdb5b0b7521778a5Gavin Shan pnv_pci_ioda_setup_seg(); 114213395c48c3def3e5afee7bd7a851f901374db5ecGavin Shan pnv_pci_ioda_setup_DMA(); 1143e9cc17d4ded2d10b332c7f3788d7817f7d9d01efGavin Shan 114437c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan pnv_pci_ioda_create_dbgfs(); 114537c367f2792f899528b5bf201a4bd6131f8b75b6Gavin Shan 1146e9cc17d4ded2d10b332c7f3788d7817f7d9d01efGavin Shan#ifdef CONFIG_EEH 114788b6d14b2bb48ea4f66fedfe671f98544395b305Gavin Shan eeh_probe_mode_set(EEH_PROBE_MODE_DEV); 1148e9cc17d4ded2d10b332c7f3788d7817f7d9d01efGavin Shan eeh_init(); 1149dadcd6d6e71311f433a16b71203d983944f14095Mike Qiu eeh_addr_cache_build(); 1150e9cc17d4ded2d10b332c7f3788d7817f7d9d01efGavin Shan#endif 1151fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan} 1152fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan 1153271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan/* 1154271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan * Returns the alignment for I/O or memory windows for P2P 1155271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan * bridges. That actually depends on how PEs are segmented. 1156271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan * For now, we return I/O or M32 segment size for PE sensitive 1157271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan * P2P bridges. Otherwise, the default values (4KiB for I/O, 1158271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan * 1MiB for memory) will be returned. 1159271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan * 1160271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan * The current PCI bus might be put into one PE, which was 1161271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan * create against the parent PCI bridge. For that case, we 1162271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan * needn't enlarge the alignment so that we can save some 1163271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan * resources. 1164271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan */ 1165271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shanstatic resource_size_t pnv_pci_window_alignment(struct pci_bus *bus, 1166271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan unsigned long type) 1167271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan{ 1168271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan struct pci_dev *bridge; 1169271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan struct pci_controller *hose = pci_bus_to_host(bus); 1170271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan struct pnv_phb *phb = hose->private_data; 1171271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan int num_pci_bridges = 0; 1172271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan 1173271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan bridge = bus->self; 1174271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan while (bridge) { 1175271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan if (pci_pcie_type(bridge) == PCI_EXP_TYPE_PCI_BRIDGE) { 1176271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan num_pci_bridges++; 1177271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan if (num_pci_bridges >= 2) 1178271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan return 1; 1179271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan } 1180271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan 1181271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan bridge = bridge->bus->self; 1182271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan } 1183271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan 1184271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan /* We need support prefetchable memory window later */ 1185271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan if (type & IORESOURCE_MEM) 1186271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan return phb->ioda.m32_segsize; 1187271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan 1188271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan return phb->ioda.io_segsize; 1189271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan} 1190271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan 1191184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt/* Prevent enabling devices for which we couldn't properly 1192184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt * assign a PE 1193184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt */ 1194cad5cef62a5a0c525d39118d2e94b6e2034d5e05Greg Kroah-Hartmanstatic int pnv_pci_enable_device_hook(struct pci_dev *dev) 1195184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 1196db1266c852611436daa01a89c272722ec39cf916Gavin Shan struct pci_controller *hose = pci_bus_to_host(dev->bus); 1197db1266c852611436daa01a89c272722ec39cf916Gavin Shan struct pnv_phb *phb = hose->private_data; 1198db1266c852611436daa01a89c272722ec39cf916Gavin Shan struct pci_dn *pdn; 1199184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1200db1266c852611436daa01a89c272722ec39cf916Gavin Shan /* The function is probably called while the PEs have 1201db1266c852611436daa01a89c272722ec39cf916Gavin Shan * not be created yet. For example, resource reassignment 1202db1266c852611436daa01a89c272722ec39cf916Gavin Shan * during PCI probe period. We just skip the check if 1203db1266c852611436daa01a89c272722ec39cf916Gavin Shan * PEs isn't ready. 1204db1266c852611436daa01a89c272722ec39cf916Gavin Shan */ 1205db1266c852611436daa01a89c272722ec39cf916Gavin Shan if (!phb->initialized) 1206db1266c852611436daa01a89c272722ec39cf916Gavin Shan return 0; 1207db1266c852611436daa01a89c272722ec39cf916Gavin Shan 1208b72c1f651491e4cd33ddec79c504a49071a512f0Benjamin Herrenschmidt pdn = pci_get_pdn(dev); 1209184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (!pdn || pdn->pe_number == IODA_INVALID_PE) 1210184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return -EINVAL; 1211db1266c852611436daa01a89c272722ec39cf916Gavin Shan 1212184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return 0; 1213184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 1214184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1215184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidtstatic u32 pnv_ioda_bdfn_to_pe(struct pnv_phb *phb, struct pci_bus *bus, 1216184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt u32 devfn) 1217184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 1218184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return phb->ioda.pe_rmap[(bus->number << 8) | devfn]; 1219184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 1220184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 122173ed148aea9dc0508be7e30e7a447f55c1b2f378Benjamin Herrenschmidtstatic void pnv_pci_ioda_shutdown(struct pnv_phb *phb) 122273ed148aea9dc0508be7e30e7a447f55c1b2f378Benjamin Herrenschmidt{ 122373ed148aea9dc0508be7e30e7a447f55c1b2f378Benjamin Herrenschmidt opal_pci_reset(phb->opal_id, OPAL_PCI_IODA_TABLE_RESET, 122473ed148aea9dc0508be7e30e7a447f55c1b2f378Benjamin Herrenschmidt OPAL_ASSERT_RESET); 122573ed148aea9dc0508be7e30e7a447f55c1b2f378Benjamin Herrenschmidt} 122673ed148aea9dc0508be7e30e7a447f55c1b2f378Benjamin Herrenschmidt 1227e9cc17d4ded2d10b332c7f3788d7817f7d9d01efGavin Shanvoid __init pnv_pci_init_ioda_phb(struct device_node *np, 1228e9cc17d4ded2d10b332c7f3788d7817f7d9d01efGavin Shan u64 hub_id, int ioda_type) 1229184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 1230184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct pci_controller *hose; 1231184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct pnv_phb *phb; 12328184616f6fcfc98f0ebf083cbf6a43e5efe54e8aGavin Shan unsigned long size, m32map_off, pemap_off, iomap_off = 0; 1233c681b93c1fd016e94c8f3dd948dcc28a78790df7Alistair Popple const __be64 *prop64; 12343a1a46612d4882462e8d06866df717e1707abbbaBenjamin Herrenschmidt const __be32 *prop32; 1235f1b7cc3ec1ed9fe684872b248b166280650c4976Gavin Shan int len; 1236184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt u64 phb_id; 1237184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt void *aux; 1238184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt long rc; 1239184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 124058d714ec7a73bfdf0780862d7e79302e084d49caGavin Shan pr_info("Initializing IODA%d OPAL PHB %s\n", ioda_type, np->full_name); 1241184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1242184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt prop64 = of_get_property(np, "ibm,opal-phbid", NULL); 1243184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (!prop64) { 1244184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_err(" Missing \"ibm,opal-phbid\" property !\n"); 1245184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return; 1246184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 1247184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb_id = be64_to_cpup(prop64); 1248184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_debug(" PHB-ID : 0x%016llx\n", phb_id); 1249184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1250184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb = alloc_bootmem(sizeof(struct pnv_phb)); 125158d714ec7a73bfdf0780862d7e79302e084d49caGavin Shan if (!phb) { 125258d714ec7a73bfdf0780862d7e79302e084d49caGavin Shan pr_err(" Out of memory !\n"); 125358d714ec7a73bfdf0780862d7e79302e084d49caGavin Shan return; 1254184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 125558d714ec7a73bfdf0780862d7e79302e084d49caGavin Shan 125658d714ec7a73bfdf0780862d7e79302e084d49caGavin Shan /* Allocate PCI controller */ 125758d714ec7a73bfdf0780862d7e79302e084d49caGavin Shan memset(phb, 0, sizeof(struct pnv_phb)); 125858d714ec7a73bfdf0780862d7e79302e084d49caGavin Shan phb->hose = hose = pcibios_alloc_controller(np); 125958d714ec7a73bfdf0780862d7e79302e084d49caGavin Shan if (!phb->hose) { 126058d714ec7a73bfdf0780862d7e79302e084d49caGavin Shan pr_err(" Can't allocate PCI controller for %s\n", 1261184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt np->full_name); 126258d714ec7a73bfdf0780862d7e79302e084d49caGavin Shan free_bootmem((unsigned long)phb, sizeof(struct pnv_phb)); 1263184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return; 1264184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 1265184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1266184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt spin_lock_init(&phb->lock); 1267f1b7cc3ec1ed9fe684872b248b166280650c4976Gavin Shan prop32 = of_get_property(np, "bus-range", &len); 1268f1b7cc3ec1ed9fe684872b248b166280650c4976Gavin Shan if (prop32 && len == 8) { 12693a1a46612d4882462e8d06866df717e1707abbbaBenjamin Herrenschmidt hose->first_busno = be32_to_cpu(prop32[0]); 12703a1a46612d4882462e8d06866df717e1707abbbaBenjamin Herrenschmidt hose->last_busno = be32_to_cpu(prop32[1]); 1271f1b7cc3ec1ed9fe684872b248b166280650c4976Gavin Shan } else { 1272f1b7cc3ec1ed9fe684872b248b166280650c4976Gavin Shan pr_warn(" Broken <bus-range> on %s\n", np->full_name); 1273f1b7cc3ec1ed9fe684872b248b166280650c4976Gavin Shan hose->first_busno = 0; 1274f1b7cc3ec1ed9fe684872b248b166280650c4976Gavin Shan hose->last_busno = 0xff; 1275f1b7cc3ec1ed9fe684872b248b166280650c4976Gavin Shan } 1276184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt hose->private_data = phb; 1277e9cc17d4ded2d10b332c7f3788d7817f7d9d01efGavin Shan phb->hub_id = hub_id; 1278184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->opal_id = phb_id; 1279aa0c033f99d9c32a8dd6b1e07d41caf1fced0e1aGavin Shan phb->type = ioda_type; 1280184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1281cee72d5bb48952f2e50acd2610d52ea82f7092c9Benjamin Herrenschmidt /* Detect specific models for error handling */ 1282cee72d5bb48952f2e50acd2610d52ea82f7092c9Benjamin Herrenschmidt if (of_device_is_compatible(np, "ibm,p7ioc-pciex")) 1283cee72d5bb48952f2e50acd2610d52ea82f7092c9Benjamin Herrenschmidt phb->model = PNV_PHB_MODEL_P7IOC; 1284f3d40c2532fee15a30d7a364ac365c21748a4a95Benjamin Herrenschmidt else if (of_device_is_compatible(np, "ibm,power8-pciex")) 1285aa0c033f99d9c32a8dd6b1e07d41caf1fced0e1aGavin Shan phb->model = PNV_PHB_MODEL_PHB3; 1286cee72d5bb48952f2e50acd2610d52ea82f7092c9Benjamin Herrenschmidt else 1287cee72d5bb48952f2e50acd2610d52ea82f7092c9Benjamin Herrenschmidt phb->model = PNV_PHB_MODEL_UNKNOWN; 1288cee72d5bb48952f2e50acd2610d52ea82f7092c9Benjamin Herrenschmidt 1289aa0c033f99d9c32a8dd6b1e07d41caf1fced0e1aGavin Shan /* Parse 32-bit and IO ranges (if any) */ 12902f1ec02ea162ad18556c35a00c6220fc613f26ceGavin Shan pci_process_bridge_OF_ranges(hose, np, !hose->global_number); 1291184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1292aa0c033f99d9c32a8dd6b1e07d41caf1fced0e1aGavin Shan /* Get registers */ 1293184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->regs = of_iomap(np, 0); 1294184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (phb->regs == NULL) 1295184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_err(" Failed to map registers !\n"); 1296184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1297184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Initialize more IODA stuff */ 129836954dc78d8a1dcd4780cf4bd0fc6292791821b9Gavin Shan phb->ioda.total_pe = 1; 1299aa0c033f99d9c32a8dd6b1e07d41caf1fced0e1aGavin Shan prop32 = of_get_property(np, "ibm,opal-num-pes", NULL); 130036954dc78d8a1dcd4780cf4bd0fc6292791821b9Gavin Shan if (prop32) 13013a1a46612d4882462e8d06866df717e1707abbbaBenjamin Herrenschmidt phb->ioda.total_pe = be32_to_cpup(prop32); 130236954dc78d8a1dcd4780cf4bd0fc6292791821b9Gavin Shan prop32 = of_get_property(np, "ibm,opal-reserved-pe", NULL); 130336954dc78d8a1dcd4780cf4bd0fc6292791821b9Gavin Shan if (prop32) 130436954dc78d8a1dcd4780cf4bd0fc6292791821b9Gavin Shan phb->ioda.reserved_pe = be32_to_cpup(prop32); 1305184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.m32_size = resource_size(&hose->mem_resources[0]); 1306aa0c033f99d9c32a8dd6b1e07d41caf1fced0e1aGavin Shan /* FW Has already off top 64k of M32 space (MSI space) */ 1307184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.m32_size += 0x10000; 1308184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1309184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.m32_segsize = phb->ioda.m32_size / phb->ioda.total_pe; 13103fd47f063b17692e843128e2abda3e697df42198Benjamin Herrenschmidt phb->ioda.m32_pci_base = hose->mem_resources[0].start - hose->mem_offset[0]; 1311184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.io_size = hose->pci_io_size; 1312184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.io_segsize = phb->ioda.io_size / phb->ioda.total_pe; 1313184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.io_pci_base = 0; /* XXX calculate this ? */ 1314184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1315c35d2a8c5f68e53ccbb4c0f64316a22af1729fcaGavin Shan /* Allocate aux data & arrays. We don't have IO ports on PHB3 */ 1316184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt size = _ALIGN_UP(phb->ioda.total_pe / 8, sizeof(unsigned long)); 1317184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt m32map_off = size; 1318e47747f479502cf5dc1f8043fbc7513a4dc8fd9fGavin Shan size += phb->ioda.total_pe * sizeof(phb->ioda.m32_segmap[0]); 1319c35d2a8c5f68e53ccbb4c0f64316a22af1729fcaGavin Shan if (phb->type == PNV_PHB_IODA1) { 1320c35d2a8c5f68e53ccbb4c0f64316a22af1729fcaGavin Shan iomap_off = size; 1321c35d2a8c5f68e53ccbb4c0f64316a22af1729fcaGavin Shan size += phb->ioda.total_pe * sizeof(phb->ioda.io_segmap[0]); 1322c35d2a8c5f68e53ccbb4c0f64316a22af1729fcaGavin Shan } 1323184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pemap_off = size; 1324184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt size += phb->ioda.total_pe * sizeof(struct pnv_ioda_pe); 1325184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt aux = alloc_bootmem(size); 1326184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt memset(aux, 0, size); 1327184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.pe_alloc = aux; 1328184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.m32_segmap = aux + m32map_off; 1329c35d2a8c5f68e53ccbb4c0f64316a22af1729fcaGavin Shan if (phb->type == PNV_PHB_IODA1) 1330c35d2a8c5f68e53ccbb4c0f64316a22af1729fcaGavin Shan phb->ioda.io_segmap = aux + iomap_off; 1331184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.pe_array = aux + pemap_off; 133236954dc78d8a1dcd4780cf4bd0fc6292791821b9Gavin Shan set_bit(phb->ioda.reserved_pe, phb->ioda.pe_alloc); 1333184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 13347ebdf956df7961ae6b57b0328e03d33f95f1346fGavin Shan INIT_LIST_HEAD(&phb->ioda.pe_dma_list); 1335184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt INIT_LIST_HEAD(&phb->ioda.pe_list); 1336184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1337184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Calculate how many 32-bit TCE segments we have */ 1338184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.tce32_count = phb->ioda.m32_pci_base >> 28; 1339184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1340184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Clear unusable m64 */ 1341184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt hose->mem_resources[1].flags = 0; 1342184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt hose->mem_resources[1].start = 0; 1343184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt hose->mem_resources[1].end = 0; 1344184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt hose->mem_resources[2].flags = 0; 1345184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt hose->mem_resources[2].start = 0; 1346184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt hose->mem_resources[2].end = 0; 1347184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1348aa0c033f99d9c32a8dd6b1e07d41caf1fced0e1aGavin Shan#if 0 /* We should really do that ... */ 1349184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt rc = opal_pci_set_phb_mem_window(opal->phb_id, 1350184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt window_type, 1351184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt window_num, 1352184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt starting_real_address, 1353184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt starting_pci_address, 1354184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt segment_size); 1355184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt#endif 1356184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 135736954dc78d8a1dcd4780cf4bd0fc6292791821b9Gavin Shan pr_info(" %d (%d) PE's M32: 0x%x [segment=0x%x]" 135836954dc78d8a1dcd4780cf4bd0fc6292791821b9Gavin Shan " IO: 0x%x [segment=0x%x]\n", 1359184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.total_pe, 136036954dc78d8a1dcd4780cf4bd0fc6292791821b9Gavin Shan phb->ioda.reserved_pe, 1361184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.m32_size, phb->ioda.m32_segsize, 1362184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->ioda.io_size, phb->ioda.io_segsize); 1363184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1364184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->hose->ops = &pnv_pci_ops; 1365e9cc17d4ded2d10b332c7f3788d7817f7d9d01efGavin Shan#ifdef CONFIG_EEH 1366e9cc17d4ded2d10b332c7f3788d7817f7d9d01efGavin Shan phb->eeh_ops = &ioda_eeh_ops; 1367e9cc17d4ded2d10b332c7f3788d7817f7d9d01efGavin Shan#endif 1368184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1369184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Setup RID -> PE mapping function */ 1370184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->bdfn_to_pe = pnv_ioda_bdfn_to_pe; 1371184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1372184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Setup TCEs */ 1373184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt phb->dma_dev_setup = pnv_pci_ioda_dma_dev_setup; 1374cd15b048445d0a54f7147c35a86c5a16ef231554Benjamin Herrenschmidt phb->dma_set_mask = pnv_pci_ioda_dma_set_mask; 1375184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 137673ed148aea9dc0508be7e30e7a447f55c1b2f378Benjamin Herrenschmidt /* Setup shutdown function for kexec */ 137773ed148aea9dc0508be7e30e7a447f55c1b2f378Benjamin Herrenschmidt phb->shutdown = pnv_pci_ioda_shutdown; 137873ed148aea9dc0508be7e30e7a447f55c1b2f378Benjamin Herrenschmidt 1379184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Setup MSI support */ 1380184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pnv_pci_init_ioda_msis(phb); 1381184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1382c40a4210a4b55284a71ed52721d9894b5bdb1953Gavin Shan /* 1383c40a4210a4b55284a71ed52721d9894b5bdb1953Gavin Shan * We pass the PCI probe flag PCI_REASSIGN_ALL_RSRC here 1384c40a4210a4b55284a71ed52721d9894b5bdb1953Gavin Shan * to let the PCI core do resource assignment. It's supposed 1385c40a4210a4b55284a71ed52721d9894b5bdb1953Gavin Shan * that the PCI core will do correct I/O and MMIO alignment 1386c40a4210a4b55284a71ed52721d9894b5bdb1953Gavin Shan * for the P2P bridge bars so that each PCI bus (excluding 1387c40a4210a4b55284a71ed52721d9894b5bdb1953Gavin Shan * the child P2P bridges) can form individual PE. 1388184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt */ 1389fb446ad075cfa5212b26c4f77751faefe574ad8bGavin Shan ppc_md.pcibios_fixup = pnv_pci_ioda_fixup; 1390184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt ppc_md.pcibios_enable_device_hook = pnv_pci_enable_device_hook; 1391271fd03a3013b106ccc178d54219c1be0c9759b7Gavin Shan ppc_md.pcibios_window_alignment = pnv_pci_window_alignment; 1392d92a208d086063ecc785b4588f74ab42268cbc4bGavin Shan ppc_md.pcibios_reset_secondary_bus = pnv_pci_reset_secondary_bus; 1393c40a4210a4b55284a71ed52721d9894b5bdb1953Gavin Shan pci_add_flags(PCI_REASSIGN_ALL_RSRC); 1394184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1395184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Reset IODA tables to a clean state */ 1396f11fe5524aa7427ae8f23dbede8a29fc4f613a71Benjamin Herrenschmidt rc = opal_pci_reset(phb_id, OPAL_PCI_IODA_TABLE_RESET, OPAL_ASSERT_RESET); 1397184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (rc) 1398f11fe5524aa7427ae8f23dbede8a29fc4f613a71Benjamin Herrenschmidt pr_warning(" OPAL Error %ld performing IODA table reset !\n", rc); 1399361f2a2a1536a1d7ff6f52bf0e4848c1441e17abGavin Shan 1400361f2a2a1536a1d7ff6f52bf0e4848c1441e17abGavin Shan /* If we're running in kdump kerenl, the previous kerenl never 1401361f2a2a1536a1d7ff6f52bf0e4848c1441e17abGavin Shan * shutdown PCI devices correctly. We already got IODA table 1402361f2a2a1536a1d7ff6f52bf0e4848c1441e17abGavin Shan * cleaned out. So we have to issue PHB reset to stop all PCI 1403361f2a2a1536a1d7ff6f52bf0e4848c1441e17abGavin Shan * transactions from previous kerenl. 1404361f2a2a1536a1d7ff6f52bf0e4848c1441e17abGavin Shan */ 1405361f2a2a1536a1d7ff6f52bf0e4848c1441e17abGavin Shan if (is_kdump_kernel()) { 1406361f2a2a1536a1d7ff6f52bf0e4848c1441e17abGavin Shan pr_info(" Issue PHB reset ...\n"); 1407361f2a2a1536a1d7ff6f52bf0e4848c1441e17abGavin Shan ioda_eeh_phb_reset(hose, EEH_RESET_FUNDAMENTAL); 1408361f2a2a1536a1d7ff6f52bf0e4848c1441e17abGavin Shan ioda_eeh_phb_reset(hose, OPAL_DEASSERT_RESET); 1409361f2a2a1536a1d7ff6f52bf0e4848c1441e17abGavin Shan } 1410aa0c033f99d9c32a8dd6b1e07d41caf1fced0e1aGavin Shan} 1411aa0c033f99d9c32a8dd6b1e07d41caf1fced0e1aGavin Shan 1412679750054ae8129a536734bccf526ff6da35376aBjorn Helgaasvoid __init pnv_pci_init_ioda2_phb(struct device_node *np) 1413aa0c033f99d9c32a8dd6b1e07d41caf1fced0e1aGavin Shan{ 1414e9cc17d4ded2d10b332c7f3788d7817f7d9d01efGavin Shan pnv_pci_init_ioda_phb(np, 0, PNV_PHB_IODA2); 1415184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 1416184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1417184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidtvoid __init pnv_pci_init_ioda_hub(struct device_node *np) 1418184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt{ 1419184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt struct device_node *phbn; 1420c681b93c1fd016e94c8f3dd948dcc28a78790df7Alistair Popple const __be64 *prop64; 1421184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt u64 hub_id; 1422184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1423184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_info("Probing IODA IO-Hub %s\n", np->full_name); 1424184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1425184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt prop64 = of_get_property(np, "ibm,opal-hubid", NULL); 1426184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (!prop64) { 1427184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_err(" Missing \"ibm,opal-hubid\" property !\n"); 1428184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt return; 1429184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 1430184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt hub_id = be64_to_cpup(prop64); 1431184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt pr_devel(" HUB-ID : 0x%016llx\n", hub_id); 1432184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt 1433184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Count child PHBs */ 1434184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt for_each_child_of_node(np, phbn) { 1435184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt /* Look for IODA1 PHBs */ 1436184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt if (of_device_is_compatible(phbn, "ibm,ioda-phb")) 1437e9cc17d4ded2d10b332c7f3788d7817f7d9d01efGavin Shan pnv_pci_init_ioda_phb(phbn, hub_id, PNV_PHB_IODA1); 1438184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt } 1439184cd4a3b962a4769889615430eaf40076b97969Benjamin Herrenschmidt} 1440