1184cd4a3SBenjamin Herrenschmidt /* 2184cd4a3SBenjamin Herrenschmidt * Support PCI/PCIe on PowerNV platforms 3184cd4a3SBenjamin Herrenschmidt * 4184cd4a3SBenjamin Herrenschmidt * Copyright 2011 Benjamin Herrenschmidt, IBM Corp. 5184cd4a3SBenjamin Herrenschmidt * 6184cd4a3SBenjamin Herrenschmidt * This program is free software; you can redistribute it and/or 7184cd4a3SBenjamin Herrenschmidt * modify it under the terms of the GNU General Public License 8184cd4a3SBenjamin Herrenschmidt * as published by the Free Software Foundation; either version 9184cd4a3SBenjamin Herrenschmidt * 2 of the License, or (at your option) any later version. 10184cd4a3SBenjamin Herrenschmidt */ 11184cd4a3SBenjamin Herrenschmidt 12cee72d5bSBenjamin Herrenschmidt #undef DEBUG 13184cd4a3SBenjamin Herrenschmidt 14184cd4a3SBenjamin Herrenschmidt #include <linux/kernel.h> 15184cd4a3SBenjamin Herrenschmidt #include <linux/pci.h> 16184cd4a3SBenjamin Herrenschmidt #include <linux/delay.h> 17184cd4a3SBenjamin Herrenschmidt #include <linux/string.h> 18184cd4a3SBenjamin Herrenschmidt #include <linux/init.h> 19184cd4a3SBenjamin Herrenschmidt #include <linux/bootmem.h> 20184cd4a3SBenjamin Herrenschmidt #include <linux/irq.h> 21184cd4a3SBenjamin Herrenschmidt #include <linux/io.h> 22184cd4a3SBenjamin Herrenschmidt #include <linux/msi.h> 23184cd4a3SBenjamin Herrenschmidt 24184cd4a3SBenjamin Herrenschmidt #include <asm/sections.h> 25184cd4a3SBenjamin Herrenschmidt #include <asm/io.h> 26184cd4a3SBenjamin Herrenschmidt #include <asm/prom.h> 27184cd4a3SBenjamin Herrenschmidt #include <asm/pci-bridge.h> 28184cd4a3SBenjamin Herrenschmidt #include <asm/machdep.h> 29184cd4a3SBenjamin Herrenschmidt #include <asm/ppc-pci.h> 30184cd4a3SBenjamin Herrenschmidt #include <asm/opal.h> 31184cd4a3SBenjamin Herrenschmidt #include <asm/iommu.h> 32184cd4a3SBenjamin Herrenschmidt #include <asm/tce.h> 33184cd4a3SBenjamin Herrenschmidt #include <asm/abs_addr.h> 34184cd4a3SBenjamin Herrenschmidt 35184cd4a3SBenjamin Herrenschmidt #include "powernv.h" 36184cd4a3SBenjamin Herrenschmidt #include "pci.h" 37184cd4a3SBenjamin Herrenschmidt 38184cd4a3SBenjamin Herrenschmidt struct resource_wrap { 39184cd4a3SBenjamin Herrenschmidt struct list_head link; 40184cd4a3SBenjamin Herrenschmidt resource_size_t size; 41184cd4a3SBenjamin Herrenschmidt resource_size_t align; 42184cd4a3SBenjamin Herrenschmidt struct pci_dev *dev; /* Set if it's a device */ 43184cd4a3SBenjamin Herrenschmidt struct pci_bus *bus; /* Set if it's a bridge */ 44184cd4a3SBenjamin Herrenschmidt }; 45184cd4a3SBenjamin Herrenschmidt 46184cd4a3SBenjamin Herrenschmidt static int __pe_printk(const char *level, const struct pnv_ioda_pe *pe, 47184cd4a3SBenjamin Herrenschmidt struct va_format *vaf) 48184cd4a3SBenjamin Herrenschmidt { 49184cd4a3SBenjamin Herrenschmidt char pfix[32]; 50184cd4a3SBenjamin Herrenschmidt 51184cd4a3SBenjamin Herrenschmidt if (pe->pdev) 52184cd4a3SBenjamin Herrenschmidt strlcpy(pfix, dev_name(&pe->pdev->dev), sizeof(pfix)); 53184cd4a3SBenjamin Herrenschmidt else 54184cd4a3SBenjamin Herrenschmidt sprintf(pfix, "%04x:%02x ", 55184cd4a3SBenjamin Herrenschmidt pci_domain_nr(pe->pbus), pe->pbus->number); 56184cd4a3SBenjamin Herrenschmidt return printk("pci %s%s: [PE# %.3d] %pV", level, pfix, pe->pe_number, vaf); 57184cd4a3SBenjamin Herrenschmidt } 58184cd4a3SBenjamin Herrenschmidt 59184cd4a3SBenjamin Herrenschmidt #define define_pe_printk_level(func, kern_level) \ 60184cd4a3SBenjamin Herrenschmidt static int func(const struct pnv_ioda_pe *pe, const char *fmt, ...) \ 61184cd4a3SBenjamin Herrenschmidt { \ 62184cd4a3SBenjamin Herrenschmidt struct va_format vaf; \ 63184cd4a3SBenjamin Herrenschmidt va_list args; \ 64184cd4a3SBenjamin Herrenschmidt int r; \ 65184cd4a3SBenjamin Herrenschmidt \ 66184cd4a3SBenjamin Herrenschmidt va_start(args, fmt); \ 67184cd4a3SBenjamin Herrenschmidt \ 68184cd4a3SBenjamin Herrenschmidt vaf.fmt = fmt; \ 69184cd4a3SBenjamin Herrenschmidt vaf.va = &args; \ 70184cd4a3SBenjamin Herrenschmidt \ 71184cd4a3SBenjamin Herrenschmidt r = __pe_printk(kern_level, pe, &vaf); \ 72184cd4a3SBenjamin Herrenschmidt va_end(args); \ 73184cd4a3SBenjamin Herrenschmidt \ 74184cd4a3SBenjamin Herrenschmidt return r; \ 75184cd4a3SBenjamin Herrenschmidt } \ 76184cd4a3SBenjamin Herrenschmidt 77184cd4a3SBenjamin Herrenschmidt define_pe_printk_level(pe_err, KERN_ERR); 78184cd4a3SBenjamin Herrenschmidt define_pe_printk_level(pe_warn, KERN_WARNING); 79184cd4a3SBenjamin Herrenschmidt define_pe_printk_level(pe_info, KERN_INFO); 80184cd4a3SBenjamin Herrenschmidt 81184cd4a3SBenjamin Herrenschmidt 82184cd4a3SBenjamin Herrenschmidt /* Calculate resource usage & alignment requirement of a single 83184cd4a3SBenjamin Herrenschmidt * device. This will also assign all resources within the device 84184cd4a3SBenjamin Herrenschmidt * for a given type starting at 0 for the biggest one and then 85184cd4a3SBenjamin Herrenschmidt * assigning in decreasing order of size. 86184cd4a3SBenjamin Herrenschmidt */ 87184cd4a3SBenjamin Herrenschmidt static void __devinit pnv_ioda_calc_dev(struct pci_dev *dev, unsigned int flags, 88184cd4a3SBenjamin Herrenschmidt resource_size_t *size, 89184cd4a3SBenjamin Herrenschmidt resource_size_t *align) 90184cd4a3SBenjamin Herrenschmidt { 91184cd4a3SBenjamin Herrenschmidt resource_size_t start; 92184cd4a3SBenjamin Herrenschmidt struct resource *r; 93184cd4a3SBenjamin Herrenschmidt int i; 94184cd4a3SBenjamin Herrenschmidt 95184cd4a3SBenjamin Herrenschmidt pr_devel(" -> CDR %s\n", pci_name(dev)); 96184cd4a3SBenjamin Herrenschmidt 97184cd4a3SBenjamin Herrenschmidt *size = *align = 0; 98184cd4a3SBenjamin Herrenschmidt 99184cd4a3SBenjamin Herrenschmidt /* Clear the resources out and mark them all unset */ 100184cd4a3SBenjamin Herrenschmidt for (i = 0; i <= PCI_ROM_RESOURCE; i++) { 101184cd4a3SBenjamin Herrenschmidt r = &dev->resource[i]; 102184cd4a3SBenjamin Herrenschmidt if (!(r->flags & flags)) 103184cd4a3SBenjamin Herrenschmidt continue; 104184cd4a3SBenjamin Herrenschmidt if (r->start) { 105184cd4a3SBenjamin Herrenschmidt r->end -= r->start; 106184cd4a3SBenjamin Herrenschmidt r->start = 0; 107184cd4a3SBenjamin Herrenschmidt } 108184cd4a3SBenjamin Herrenschmidt r->flags |= IORESOURCE_UNSET; 109184cd4a3SBenjamin Herrenschmidt } 110184cd4a3SBenjamin Herrenschmidt 111184cd4a3SBenjamin Herrenschmidt /* We currently keep all memory resources together, we 112184cd4a3SBenjamin Herrenschmidt * will handle prefetch & 64-bit separately in the future 113184cd4a3SBenjamin Herrenschmidt * but for now we stick everybody in M32 114184cd4a3SBenjamin Herrenschmidt */ 115184cd4a3SBenjamin Herrenschmidt start = 0; 116184cd4a3SBenjamin Herrenschmidt for (;;) { 117184cd4a3SBenjamin Herrenschmidt resource_size_t max_size = 0; 118184cd4a3SBenjamin Herrenschmidt int max_no = -1; 119184cd4a3SBenjamin Herrenschmidt 120184cd4a3SBenjamin Herrenschmidt /* Find next biggest resource */ 121184cd4a3SBenjamin Herrenschmidt for (i = 0; i <= PCI_ROM_RESOURCE; i++) { 122184cd4a3SBenjamin Herrenschmidt r = &dev->resource[i]; 123184cd4a3SBenjamin Herrenschmidt if (!(r->flags & IORESOURCE_UNSET) || 124184cd4a3SBenjamin Herrenschmidt !(r->flags & flags)) 125184cd4a3SBenjamin Herrenschmidt continue; 126184cd4a3SBenjamin Herrenschmidt if (resource_size(r) > max_size) { 127184cd4a3SBenjamin Herrenschmidt max_size = resource_size(r); 128184cd4a3SBenjamin Herrenschmidt max_no = i; 129184cd4a3SBenjamin Herrenschmidt } 130184cd4a3SBenjamin Herrenschmidt } 131184cd4a3SBenjamin Herrenschmidt if (max_no < 0) 132184cd4a3SBenjamin Herrenschmidt break; 133184cd4a3SBenjamin Herrenschmidt r = &dev->resource[max_no]; 134184cd4a3SBenjamin Herrenschmidt if (max_size > *align) 135184cd4a3SBenjamin Herrenschmidt *align = max_size; 136184cd4a3SBenjamin Herrenschmidt *size += max_size; 137184cd4a3SBenjamin Herrenschmidt r->start = start; 138184cd4a3SBenjamin Herrenschmidt start += max_size; 139184cd4a3SBenjamin Herrenschmidt r->end = r->start + max_size - 1; 140184cd4a3SBenjamin Herrenschmidt r->flags &= ~IORESOURCE_UNSET; 141184cd4a3SBenjamin Herrenschmidt pr_devel(" -> R%d %016llx..%016llx\n", 142184cd4a3SBenjamin Herrenschmidt max_no, r->start, r->end); 143184cd4a3SBenjamin Herrenschmidt } 144184cd4a3SBenjamin Herrenschmidt pr_devel(" <- CDR %s size=%llx align=%llx\n", 145184cd4a3SBenjamin Herrenschmidt pci_name(dev), *size, *align); 146184cd4a3SBenjamin Herrenschmidt } 147184cd4a3SBenjamin Herrenschmidt 148184cd4a3SBenjamin Herrenschmidt /* Allocate a resource "wrap" for a given device or bridge and 149184cd4a3SBenjamin Herrenschmidt * insert it at the right position in the sorted list 150184cd4a3SBenjamin Herrenschmidt */ 151184cd4a3SBenjamin Herrenschmidt static void __devinit pnv_ioda_add_wrap(struct list_head *list, 152184cd4a3SBenjamin Herrenschmidt struct pci_bus *bus, 153184cd4a3SBenjamin Herrenschmidt struct pci_dev *dev, 154184cd4a3SBenjamin Herrenschmidt resource_size_t size, 155184cd4a3SBenjamin Herrenschmidt resource_size_t align) 156184cd4a3SBenjamin Herrenschmidt { 157184cd4a3SBenjamin Herrenschmidt struct resource_wrap *w1, *w = kzalloc(sizeof(*w), GFP_KERNEL); 158184cd4a3SBenjamin Herrenschmidt 159184cd4a3SBenjamin Herrenschmidt w->size = size; 160184cd4a3SBenjamin Herrenschmidt w->align = align; 161184cd4a3SBenjamin Herrenschmidt w->dev = dev; 162184cd4a3SBenjamin Herrenschmidt w->bus = bus; 163184cd4a3SBenjamin Herrenschmidt 164184cd4a3SBenjamin Herrenschmidt list_for_each_entry(w1, list, link) { 165184cd4a3SBenjamin Herrenschmidt if (w1->align < align) { 166184cd4a3SBenjamin Herrenschmidt list_add_tail(&w->link, &w1->link); 167184cd4a3SBenjamin Herrenschmidt return; 168184cd4a3SBenjamin Herrenschmidt } 169184cd4a3SBenjamin Herrenschmidt } 170184cd4a3SBenjamin Herrenschmidt list_add_tail(&w->link, list); 171184cd4a3SBenjamin Herrenschmidt } 172184cd4a3SBenjamin Herrenschmidt 173184cd4a3SBenjamin Herrenschmidt /* Offset device resources of a given type */ 174184cd4a3SBenjamin Herrenschmidt static void __devinit pnv_ioda_offset_dev(struct pci_dev *dev, 175184cd4a3SBenjamin Herrenschmidt unsigned int flags, 176184cd4a3SBenjamin Herrenschmidt resource_size_t offset) 177184cd4a3SBenjamin Herrenschmidt { 178184cd4a3SBenjamin Herrenschmidt struct resource *r; 179184cd4a3SBenjamin Herrenschmidt int i; 180184cd4a3SBenjamin Herrenschmidt 181184cd4a3SBenjamin Herrenschmidt pr_devel(" -> ODR %s [%x] +%016llx\n", pci_name(dev), flags, offset); 182184cd4a3SBenjamin Herrenschmidt 183184cd4a3SBenjamin Herrenschmidt for (i = 0; i <= PCI_ROM_RESOURCE; i++) { 184184cd4a3SBenjamin Herrenschmidt r = &dev->resource[i]; 185184cd4a3SBenjamin Herrenschmidt if (r->flags & flags) { 186184cd4a3SBenjamin Herrenschmidt dev->resource[i].start += offset; 187184cd4a3SBenjamin Herrenschmidt dev->resource[i].end += offset; 188184cd4a3SBenjamin Herrenschmidt } 189184cd4a3SBenjamin Herrenschmidt } 190184cd4a3SBenjamin Herrenschmidt 191184cd4a3SBenjamin Herrenschmidt pr_devel(" <- ODR %s [%x] +%016llx\n", pci_name(dev), flags, offset); 192184cd4a3SBenjamin Herrenschmidt } 193184cd4a3SBenjamin Herrenschmidt 194184cd4a3SBenjamin Herrenschmidt /* Offset bus resources (& all children) of a given type */ 195184cd4a3SBenjamin Herrenschmidt static void __devinit pnv_ioda_offset_bus(struct pci_bus *bus, 196184cd4a3SBenjamin Herrenschmidt unsigned int flags, 197184cd4a3SBenjamin Herrenschmidt resource_size_t offset) 198184cd4a3SBenjamin Herrenschmidt { 199184cd4a3SBenjamin Herrenschmidt struct resource *r; 200184cd4a3SBenjamin Herrenschmidt struct pci_dev *dev; 201184cd4a3SBenjamin Herrenschmidt struct pci_bus *cbus; 202184cd4a3SBenjamin Herrenschmidt int i; 203184cd4a3SBenjamin Herrenschmidt 204184cd4a3SBenjamin Herrenschmidt pr_devel(" -> OBR %s [%x] +%016llx\n", 205184cd4a3SBenjamin Herrenschmidt bus->self ? pci_name(bus->self) : "root", flags, offset); 206184cd4a3SBenjamin Herrenschmidt 207f7ea82beSBenjamin Herrenschmidt pci_bus_for_each_resource(bus, r, i) { 208184cd4a3SBenjamin Herrenschmidt if (r && (r->flags & flags)) { 209f7ea82beSBenjamin Herrenschmidt r->start += offset; 210f7ea82beSBenjamin Herrenschmidt r->end += offset; 211184cd4a3SBenjamin Herrenschmidt } 212184cd4a3SBenjamin Herrenschmidt } 213184cd4a3SBenjamin Herrenschmidt list_for_each_entry(dev, &bus->devices, bus_list) 214184cd4a3SBenjamin Herrenschmidt pnv_ioda_offset_dev(dev, flags, offset); 215184cd4a3SBenjamin Herrenschmidt list_for_each_entry(cbus, &bus->children, node) 216184cd4a3SBenjamin Herrenschmidt pnv_ioda_offset_bus(cbus, flags, offset); 217184cd4a3SBenjamin Herrenschmidt 218184cd4a3SBenjamin Herrenschmidt pr_devel(" <- OBR %s [%x]\n", 219184cd4a3SBenjamin Herrenschmidt bus->self ? pci_name(bus->self) : "root", flags); 220184cd4a3SBenjamin Herrenschmidt } 221184cd4a3SBenjamin Herrenschmidt 222184cd4a3SBenjamin Herrenschmidt /* This is the guts of our IODA resource allocation. This is called 223184cd4a3SBenjamin Herrenschmidt * recursively for each bus in the system. It calculates all the 224184cd4a3SBenjamin Herrenschmidt * necessary size and requirements for children and assign them 225184cd4a3SBenjamin Herrenschmidt * resources such that: 226184cd4a3SBenjamin Herrenschmidt * 227184cd4a3SBenjamin Herrenschmidt * - Each function fits in it's own contiguous set of IO/M32 228184cd4a3SBenjamin Herrenschmidt * segment 229184cd4a3SBenjamin Herrenschmidt * 230184cd4a3SBenjamin Herrenschmidt * - All segments behind a P2P bridge are contiguous and obey 231184cd4a3SBenjamin Herrenschmidt * alignment constraints of those bridges 232184cd4a3SBenjamin Herrenschmidt */ 233184cd4a3SBenjamin Herrenschmidt static void __devinit pnv_ioda_calc_bus(struct pci_bus *bus, unsigned int flags, 234184cd4a3SBenjamin Herrenschmidt resource_size_t *size, 235184cd4a3SBenjamin Herrenschmidt resource_size_t *align) 236184cd4a3SBenjamin Herrenschmidt { 237184cd4a3SBenjamin Herrenschmidt struct pci_controller *hose = pci_bus_to_host(bus); 238184cd4a3SBenjamin Herrenschmidt struct pnv_phb *phb = hose->private_data; 239184cd4a3SBenjamin Herrenschmidt resource_size_t dev_size, dev_align, start; 240184cd4a3SBenjamin Herrenschmidt resource_size_t min_align, min_balign; 241184cd4a3SBenjamin Herrenschmidt struct pci_dev *cdev; 242184cd4a3SBenjamin Herrenschmidt struct pci_bus *cbus; 243184cd4a3SBenjamin Herrenschmidt struct list_head head; 244184cd4a3SBenjamin Herrenschmidt struct resource_wrap *w; 245184cd4a3SBenjamin Herrenschmidt unsigned int bres; 246184cd4a3SBenjamin Herrenschmidt 247184cd4a3SBenjamin Herrenschmidt *size = *align = 0; 248184cd4a3SBenjamin Herrenschmidt 249184cd4a3SBenjamin Herrenschmidt pr_devel("-> CBR %s [%x]\n", 250184cd4a3SBenjamin Herrenschmidt bus->self ? pci_name(bus->self) : "root", flags); 251184cd4a3SBenjamin Herrenschmidt 252184cd4a3SBenjamin Herrenschmidt /* Calculate alignment requirements based on the type 253184cd4a3SBenjamin Herrenschmidt * of resource we are working on 254184cd4a3SBenjamin Herrenschmidt */ 255184cd4a3SBenjamin Herrenschmidt if (flags & IORESOURCE_IO) { 256184cd4a3SBenjamin Herrenschmidt bres = 0; 257184cd4a3SBenjamin Herrenschmidt min_align = phb->ioda.io_segsize; 258184cd4a3SBenjamin Herrenschmidt min_balign = 0x1000; 259184cd4a3SBenjamin Herrenschmidt } else { 260184cd4a3SBenjamin Herrenschmidt bres = 1; 261184cd4a3SBenjamin Herrenschmidt min_align = phb->ioda.m32_segsize; 262184cd4a3SBenjamin Herrenschmidt min_balign = 0x100000; 263184cd4a3SBenjamin Herrenschmidt } 264184cd4a3SBenjamin Herrenschmidt 265184cd4a3SBenjamin Herrenschmidt /* Gather all our children resources ordered by alignment */ 266184cd4a3SBenjamin Herrenschmidt INIT_LIST_HEAD(&head); 267184cd4a3SBenjamin Herrenschmidt 268184cd4a3SBenjamin Herrenschmidt /* - Busses */ 269184cd4a3SBenjamin Herrenschmidt list_for_each_entry(cbus, &bus->children, node) { 270184cd4a3SBenjamin Herrenschmidt pnv_ioda_calc_bus(cbus, flags, &dev_size, &dev_align); 271184cd4a3SBenjamin Herrenschmidt pnv_ioda_add_wrap(&head, cbus, NULL, dev_size, dev_align); 272184cd4a3SBenjamin Herrenschmidt } 273184cd4a3SBenjamin Herrenschmidt 274184cd4a3SBenjamin Herrenschmidt /* - Devices */ 275184cd4a3SBenjamin Herrenschmidt list_for_each_entry(cdev, &bus->devices, bus_list) { 276184cd4a3SBenjamin Herrenschmidt pnv_ioda_calc_dev(cdev, flags, &dev_size, &dev_align); 277184cd4a3SBenjamin Herrenschmidt /* Align them to segment size */ 278184cd4a3SBenjamin Herrenschmidt if (dev_align < min_align) 279184cd4a3SBenjamin Herrenschmidt dev_align = min_align; 280184cd4a3SBenjamin Herrenschmidt pnv_ioda_add_wrap(&head, NULL, cdev, dev_size, dev_align); 281184cd4a3SBenjamin Herrenschmidt } 282184cd4a3SBenjamin Herrenschmidt if (list_empty(&head)) 283184cd4a3SBenjamin Herrenschmidt goto empty; 284184cd4a3SBenjamin Herrenschmidt 285184cd4a3SBenjamin Herrenschmidt /* Now we can do two things: assign offsets to them within that 286184cd4a3SBenjamin Herrenschmidt * level and get our total alignment & size requirements. The 287184cd4a3SBenjamin Herrenschmidt * assignment algorithm is going to be uber-trivial for now, we 288184cd4a3SBenjamin Herrenschmidt * can try to be smarter later at filling out holes. 289184cd4a3SBenjamin Herrenschmidt */ 290f7ea82beSBenjamin Herrenschmidt if (bus->self) { 291f7ea82beSBenjamin Herrenschmidt /* No offset for downstream bridges */ 292f7ea82beSBenjamin Herrenschmidt start = 0; 293f7ea82beSBenjamin Herrenschmidt } else { 294f7ea82beSBenjamin Herrenschmidt /* Offset from the root */ 295f7ea82beSBenjamin Herrenschmidt if (flags & IORESOURCE_IO) 296184cd4a3SBenjamin Herrenschmidt /* Don't hand out IO 0 */ 297f7ea82beSBenjamin Herrenschmidt start = hose->io_resource.start + 0x1000; 298f7ea82beSBenjamin Herrenschmidt else 299f7ea82beSBenjamin Herrenschmidt start = hose->mem_resources[0].start; 300f7ea82beSBenjamin Herrenschmidt } 301184cd4a3SBenjamin Herrenschmidt while(!list_empty(&head)) { 302184cd4a3SBenjamin Herrenschmidt w = list_first_entry(&head, struct resource_wrap, link); 303184cd4a3SBenjamin Herrenschmidt list_del(&w->link); 304184cd4a3SBenjamin Herrenschmidt if (w->size) { 305184cd4a3SBenjamin Herrenschmidt if (start) { 306184cd4a3SBenjamin Herrenschmidt start = ALIGN(start, w->align); 307184cd4a3SBenjamin Herrenschmidt if (w->dev) 308184cd4a3SBenjamin Herrenschmidt pnv_ioda_offset_dev(w->dev,flags,start); 309184cd4a3SBenjamin Herrenschmidt else if (w->bus) 310184cd4a3SBenjamin Herrenschmidt pnv_ioda_offset_bus(w->bus,flags,start); 311184cd4a3SBenjamin Herrenschmidt } 312184cd4a3SBenjamin Herrenschmidt if (w->align > *align) 313184cd4a3SBenjamin Herrenschmidt *align = w->align; 314184cd4a3SBenjamin Herrenschmidt } 315184cd4a3SBenjamin Herrenschmidt start += w->size; 316184cd4a3SBenjamin Herrenschmidt kfree(w); 317184cd4a3SBenjamin Herrenschmidt } 318184cd4a3SBenjamin Herrenschmidt *size = start; 319184cd4a3SBenjamin Herrenschmidt 320184cd4a3SBenjamin Herrenschmidt /* Align and setup bridge resources */ 321184cd4a3SBenjamin Herrenschmidt *align = max_t(resource_size_t, *align, 322184cd4a3SBenjamin Herrenschmidt max_t(resource_size_t, min_align, min_balign)); 323184cd4a3SBenjamin Herrenschmidt *size = ALIGN(*size, 324184cd4a3SBenjamin Herrenschmidt max_t(resource_size_t, min_align, min_balign)); 325184cd4a3SBenjamin Herrenschmidt empty: 326184cd4a3SBenjamin Herrenschmidt /* Only setup P2P's, not the PHB itself */ 327184cd4a3SBenjamin Herrenschmidt if (bus->self) { 328f7ea82beSBenjamin Herrenschmidt struct resource *res = bus->resource[bres]; 329184cd4a3SBenjamin Herrenschmidt 330f7ea82beSBenjamin Herrenschmidt if (WARN_ON(res == NULL)) 331f7ea82beSBenjamin Herrenschmidt return; 332f7ea82beSBenjamin Herrenschmidt 333f7ea82beSBenjamin Herrenschmidt /* 334f7ea82beSBenjamin Herrenschmidt * FIXME: We should probably export and call 335f7ea82beSBenjamin Herrenschmidt * pci_bridge_check_ranges() to properly re-initialize 336f7ea82beSBenjamin Herrenschmidt * the PCI portion of the flags here, and to detect 337f7ea82beSBenjamin Herrenschmidt * what the bridge actually supports. 338f7ea82beSBenjamin Herrenschmidt */ 339f7ea82beSBenjamin Herrenschmidt res->start = 0; 340f7ea82beSBenjamin Herrenschmidt res->flags = (*size) ? flags : 0; 341f7ea82beSBenjamin Herrenschmidt res->end = (*size) ? (*size - 1) : 0; 342184cd4a3SBenjamin Herrenschmidt } 343184cd4a3SBenjamin Herrenschmidt 344184cd4a3SBenjamin Herrenschmidt pr_devel("<- CBR %s [%x] *size=%016llx *align=%016llx\n", 345184cd4a3SBenjamin Herrenschmidt bus->self ? pci_name(bus->self) : "root", flags,*size,*align); 346184cd4a3SBenjamin Herrenschmidt } 347184cd4a3SBenjamin Herrenschmidt 348184cd4a3SBenjamin Herrenschmidt static struct pci_dn *pnv_ioda_get_pdn(struct pci_dev *dev) 349184cd4a3SBenjamin Herrenschmidt { 350184cd4a3SBenjamin Herrenschmidt struct device_node *np; 351184cd4a3SBenjamin Herrenschmidt 352184cd4a3SBenjamin Herrenschmidt np = pci_device_to_OF_node(dev); 353184cd4a3SBenjamin Herrenschmidt if (!np) 354184cd4a3SBenjamin Herrenschmidt return NULL; 355184cd4a3SBenjamin Herrenschmidt return PCI_DN(np); 356184cd4a3SBenjamin Herrenschmidt } 357184cd4a3SBenjamin Herrenschmidt 358184cd4a3SBenjamin Herrenschmidt static void __devinit pnv_ioda_setup_pe_segments(struct pci_dev *dev) 359184cd4a3SBenjamin Herrenschmidt { 360184cd4a3SBenjamin Herrenschmidt struct pci_controller *hose = pci_bus_to_host(dev->bus); 361184cd4a3SBenjamin Herrenschmidt struct pnv_phb *phb = hose->private_data; 362184cd4a3SBenjamin Herrenschmidt struct pci_dn *pdn = pnv_ioda_get_pdn(dev); 363184cd4a3SBenjamin Herrenschmidt unsigned int pe, i; 364184cd4a3SBenjamin Herrenschmidt resource_size_t pos; 365184cd4a3SBenjamin Herrenschmidt struct resource io_res; 366184cd4a3SBenjamin Herrenschmidt struct resource m32_res; 367184cd4a3SBenjamin Herrenschmidt struct pci_bus_region region; 368184cd4a3SBenjamin Herrenschmidt int rc; 369184cd4a3SBenjamin Herrenschmidt 370184cd4a3SBenjamin Herrenschmidt /* Anything not referenced in the device-tree gets PE#0 */ 371184cd4a3SBenjamin Herrenschmidt pe = pdn ? pdn->pe_number : 0; 372184cd4a3SBenjamin Herrenschmidt 373184cd4a3SBenjamin Herrenschmidt /* Calculate the device min/max */ 374184cd4a3SBenjamin Herrenschmidt io_res.start = m32_res.start = (resource_size_t)-1; 375184cd4a3SBenjamin Herrenschmidt io_res.end = m32_res.end = 0; 376184cd4a3SBenjamin Herrenschmidt io_res.flags = IORESOURCE_IO; 377184cd4a3SBenjamin Herrenschmidt m32_res.flags = IORESOURCE_MEM; 378184cd4a3SBenjamin Herrenschmidt 379184cd4a3SBenjamin Herrenschmidt for (i = 0; i <= PCI_ROM_RESOURCE; i++) { 380184cd4a3SBenjamin Herrenschmidt struct resource *r = NULL; 381184cd4a3SBenjamin Herrenschmidt if (dev->resource[i].flags & IORESOURCE_IO) 382184cd4a3SBenjamin Herrenschmidt r = &io_res; 383184cd4a3SBenjamin Herrenschmidt if (dev->resource[i].flags & IORESOURCE_MEM) 384184cd4a3SBenjamin Herrenschmidt r = &m32_res; 385184cd4a3SBenjamin Herrenschmidt if (!r) 386184cd4a3SBenjamin Herrenschmidt continue; 387184cd4a3SBenjamin Herrenschmidt if (dev->resource[i].start < r->start) 388184cd4a3SBenjamin Herrenschmidt r->start = dev->resource[i].start; 389184cd4a3SBenjamin Herrenschmidt if (dev->resource[i].end > r->end) 390184cd4a3SBenjamin Herrenschmidt r->end = dev->resource[i].end; 391184cd4a3SBenjamin Herrenschmidt } 392184cd4a3SBenjamin Herrenschmidt 393184cd4a3SBenjamin Herrenschmidt /* Setup IO segments */ 394184cd4a3SBenjamin Herrenschmidt if (io_res.start < io_res.end) { 395184cd4a3SBenjamin Herrenschmidt pcibios_resource_to_bus(dev, ®ion, &io_res); 396184cd4a3SBenjamin Herrenschmidt pos = region.start; 397184cd4a3SBenjamin Herrenschmidt i = pos / phb->ioda.io_segsize; 398184cd4a3SBenjamin Herrenschmidt while(i < phb->ioda.total_pe && pos <= region.end) { 399184cd4a3SBenjamin Herrenschmidt if (phb->ioda.io_segmap[i]) { 400184cd4a3SBenjamin Herrenschmidt pr_err("%s: Trying to use IO seg #%d which is" 401184cd4a3SBenjamin Herrenschmidt " already used by PE# %d\n", 402184cd4a3SBenjamin Herrenschmidt pci_name(dev), i, 403184cd4a3SBenjamin Herrenschmidt phb->ioda.io_segmap[i]); 404184cd4a3SBenjamin Herrenschmidt /* XXX DO SOMETHING TO DISABLE DEVICE ? */ 405184cd4a3SBenjamin Herrenschmidt break; 406184cd4a3SBenjamin Herrenschmidt } 407184cd4a3SBenjamin Herrenschmidt phb->ioda.io_segmap[i] = pe; 408184cd4a3SBenjamin Herrenschmidt rc = opal_pci_map_pe_mmio_window(phb->opal_id, pe, 409184cd4a3SBenjamin Herrenschmidt OPAL_IO_WINDOW_TYPE, 410184cd4a3SBenjamin Herrenschmidt 0, i); 411184cd4a3SBenjamin Herrenschmidt if (rc != OPAL_SUCCESS) { 412184cd4a3SBenjamin Herrenschmidt pr_err("%s: OPAL error %d setting up mapping" 413184cd4a3SBenjamin Herrenschmidt " for IO seg# %d\n", 414184cd4a3SBenjamin Herrenschmidt pci_name(dev), rc, i); 415184cd4a3SBenjamin Herrenschmidt /* XXX DO SOMETHING TO DISABLE DEVICE ? */ 416184cd4a3SBenjamin Herrenschmidt break; 417184cd4a3SBenjamin Herrenschmidt } 418184cd4a3SBenjamin Herrenschmidt pos += phb->ioda.io_segsize; 419184cd4a3SBenjamin Herrenschmidt i++; 420184cd4a3SBenjamin Herrenschmidt }; 421184cd4a3SBenjamin Herrenschmidt } 422184cd4a3SBenjamin Herrenschmidt 423184cd4a3SBenjamin Herrenschmidt /* Setup M32 segments */ 424184cd4a3SBenjamin Herrenschmidt if (m32_res.start < m32_res.end) { 425184cd4a3SBenjamin Herrenschmidt pcibios_resource_to_bus(dev, ®ion, &m32_res); 426184cd4a3SBenjamin Herrenschmidt pos = region.start; 427184cd4a3SBenjamin Herrenschmidt i = pos / phb->ioda.m32_segsize; 428184cd4a3SBenjamin Herrenschmidt while(i < phb->ioda.total_pe && pos <= region.end) { 429184cd4a3SBenjamin Herrenschmidt if (phb->ioda.m32_segmap[i]) { 430184cd4a3SBenjamin Herrenschmidt pr_err("%s: Trying to use M32 seg #%d which is" 431184cd4a3SBenjamin Herrenschmidt " already used by PE# %d\n", 432184cd4a3SBenjamin Herrenschmidt pci_name(dev), i, 433184cd4a3SBenjamin Herrenschmidt phb->ioda.m32_segmap[i]); 434184cd4a3SBenjamin Herrenschmidt /* XXX DO SOMETHING TO DISABLE DEVICE ? */ 435184cd4a3SBenjamin Herrenschmidt break; 436184cd4a3SBenjamin Herrenschmidt } 437184cd4a3SBenjamin Herrenschmidt phb->ioda.m32_segmap[i] = pe; 438184cd4a3SBenjamin Herrenschmidt rc = opal_pci_map_pe_mmio_window(phb->opal_id, pe, 439184cd4a3SBenjamin Herrenschmidt OPAL_M32_WINDOW_TYPE, 440184cd4a3SBenjamin Herrenschmidt 0, i); 441184cd4a3SBenjamin Herrenschmidt if (rc != OPAL_SUCCESS) { 442184cd4a3SBenjamin Herrenschmidt pr_err("%s: OPAL error %d setting up mapping" 443184cd4a3SBenjamin Herrenschmidt " for M32 seg# %d\n", 444184cd4a3SBenjamin Herrenschmidt pci_name(dev), rc, i); 445184cd4a3SBenjamin Herrenschmidt /* XXX DO SOMETHING TO DISABLE DEVICE ? */ 446184cd4a3SBenjamin Herrenschmidt break; 447184cd4a3SBenjamin Herrenschmidt } 448184cd4a3SBenjamin Herrenschmidt pos += phb->ioda.m32_segsize; 449184cd4a3SBenjamin Herrenschmidt i++; 450184cd4a3SBenjamin Herrenschmidt } 451184cd4a3SBenjamin Herrenschmidt } 452184cd4a3SBenjamin Herrenschmidt } 453184cd4a3SBenjamin Herrenschmidt 454184cd4a3SBenjamin Herrenschmidt /* Check if a resource still fits in the total IO or M32 range 455184cd4a3SBenjamin Herrenschmidt * for a given PHB 456184cd4a3SBenjamin Herrenschmidt */ 457184cd4a3SBenjamin Herrenschmidt static int __devinit pnv_ioda_resource_fit(struct pci_controller *hose, 458184cd4a3SBenjamin Herrenschmidt struct resource *r) 459184cd4a3SBenjamin Herrenschmidt { 460184cd4a3SBenjamin Herrenschmidt struct resource *bounds; 461184cd4a3SBenjamin Herrenschmidt 462184cd4a3SBenjamin Herrenschmidt if (r->flags & IORESOURCE_IO) 463184cd4a3SBenjamin Herrenschmidt bounds = &hose->io_resource; 464184cd4a3SBenjamin Herrenschmidt else if (r->flags & IORESOURCE_MEM) 465184cd4a3SBenjamin Herrenschmidt bounds = &hose->mem_resources[0]; 466184cd4a3SBenjamin Herrenschmidt else 467184cd4a3SBenjamin Herrenschmidt return 1; 468184cd4a3SBenjamin Herrenschmidt 469184cd4a3SBenjamin Herrenschmidt if (r->start >= bounds->start && r->end <= bounds->end) 470184cd4a3SBenjamin Herrenschmidt return 1; 471184cd4a3SBenjamin Herrenschmidt r->flags = 0; 472184cd4a3SBenjamin Herrenschmidt return 0; 473184cd4a3SBenjamin Herrenschmidt } 474184cd4a3SBenjamin Herrenschmidt 475184cd4a3SBenjamin Herrenschmidt static void __devinit pnv_ioda_update_resources(struct pci_bus *bus) 476184cd4a3SBenjamin Herrenschmidt { 477184cd4a3SBenjamin Herrenschmidt struct pci_controller *hose = pci_bus_to_host(bus); 478184cd4a3SBenjamin Herrenschmidt struct pci_bus *cbus; 479184cd4a3SBenjamin Herrenschmidt struct pci_dev *cdev; 480184cd4a3SBenjamin Herrenschmidt unsigned int i; 481184cd4a3SBenjamin Herrenschmidt 482cee72d5bSBenjamin Herrenschmidt /* We used to clear all device enables here. However it looks like 483cee72d5bSBenjamin Herrenschmidt * clearing MEM enable causes Obsidian (IPR SCS) to go bonkers, 484cee72d5bSBenjamin Herrenschmidt * and shoot fatal errors to the PHB which in turns fences itself 485cee72d5bSBenjamin Herrenschmidt * and we can't recover from that ... yet. So for now, let's leave 486cee72d5bSBenjamin Herrenschmidt * the enables as-is and hope for the best. 487cee72d5bSBenjamin Herrenschmidt */ 488184cd4a3SBenjamin Herrenschmidt 489184cd4a3SBenjamin Herrenschmidt /* Check if bus resources fit in our IO or M32 range */ 490184cd4a3SBenjamin Herrenschmidt for (i = 0; bus->self && (i < 2); i++) { 491184cd4a3SBenjamin Herrenschmidt struct resource *r = bus->resource[i]; 492184cd4a3SBenjamin Herrenschmidt if (r && !pnv_ioda_resource_fit(hose, r)) 493184cd4a3SBenjamin Herrenschmidt pr_err("%s: Bus %d resource %d disabled, no room\n", 494184cd4a3SBenjamin Herrenschmidt pci_name(bus->self), bus->number, i); 495184cd4a3SBenjamin Herrenschmidt } 496184cd4a3SBenjamin Herrenschmidt 497184cd4a3SBenjamin Herrenschmidt /* Update self if it's not a PHB */ 498184cd4a3SBenjamin Herrenschmidt if (bus->self) 499184cd4a3SBenjamin Herrenschmidt pci_setup_bridge(bus); 500184cd4a3SBenjamin Herrenschmidt 501184cd4a3SBenjamin Herrenschmidt /* Update child devices */ 502184cd4a3SBenjamin Herrenschmidt list_for_each_entry(cdev, &bus->devices, bus_list) { 503184cd4a3SBenjamin Herrenschmidt /* Check if resource fits, if not, disabled it */ 504184cd4a3SBenjamin Herrenschmidt for (i = 0; i <= PCI_ROM_RESOURCE; i++) { 505184cd4a3SBenjamin Herrenschmidt struct resource *r = &cdev->resource[i]; 506184cd4a3SBenjamin Herrenschmidt if (!pnv_ioda_resource_fit(hose, r)) 507184cd4a3SBenjamin Herrenschmidt pr_err("%s: Resource %d disabled, no room\n", 508184cd4a3SBenjamin Herrenschmidt pci_name(cdev), i); 509184cd4a3SBenjamin Herrenschmidt } 510184cd4a3SBenjamin Herrenschmidt 511184cd4a3SBenjamin Herrenschmidt /* Assign segments */ 512184cd4a3SBenjamin Herrenschmidt pnv_ioda_setup_pe_segments(cdev); 513184cd4a3SBenjamin Herrenschmidt 514184cd4a3SBenjamin Herrenschmidt /* Update HW BARs */ 515184cd4a3SBenjamin Herrenschmidt for (i = 0; i <= PCI_ROM_RESOURCE; i++) 516184cd4a3SBenjamin Herrenschmidt pci_update_resource(cdev, i); 517184cd4a3SBenjamin Herrenschmidt } 518184cd4a3SBenjamin Herrenschmidt 519184cd4a3SBenjamin Herrenschmidt /* Update child busses */ 520184cd4a3SBenjamin Herrenschmidt list_for_each_entry(cbus, &bus->children, node) 521184cd4a3SBenjamin Herrenschmidt pnv_ioda_update_resources(cbus); 522184cd4a3SBenjamin Herrenschmidt } 523184cd4a3SBenjamin Herrenschmidt 524184cd4a3SBenjamin Herrenschmidt static int __devinit pnv_ioda_alloc_pe(struct pnv_phb *phb) 525184cd4a3SBenjamin Herrenschmidt { 526184cd4a3SBenjamin Herrenschmidt unsigned long pe; 527184cd4a3SBenjamin Herrenschmidt 528184cd4a3SBenjamin Herrenschmidt do { 529184cd4a3SBenjamin Herrenschmidt pe = find_next_zero_bit(phb->ioda.pe_alloc, 530184cd4a3SBenjamin Herrenschmidt phb->ioda.total_pe, 0); 531184cd4a3SBenjamin Herrenschmidt if (pe >= phb->ioda.total_pe) 532184cd4a3SBenjamin Herrenschmidt return IODA_INVALID_PE; 533184cd4a3SBenjamin Herrenschmidt } while(test_and_set_bit(pe, phb->ioda.pe_alloc)); 534184cd4a3SBenjamin Herrenschmidt 535184cd4a3SBenjamin Herrenschmidt phb->ioda.pe_array[pe].pe_number = pe; 536184cd4a3SBenjamin Herrenschmidt return pe; 537184cd4a3SBenjamin Herrenschmidt } 538184cd4a3SBenjamin Herrenschmidt 539184cd4a3SBenjamin Herrenschmidt static void __devinit pnv_ioda_free_pe(struct pnv_phb *phb, int pe) 540184cd4a3SBenjamin Herrenschmidt { 541184cd4a3SBenjamin Herrenschmidt WARN_ON(phb->ioda.pe_array[pe].pdev); 542184cd4a3SBenjamin Herrenschmidt 543184cd4a3SBenjamin Herrenschmidt memset(&phb->ioda.pe_array[pe], 0, sizeof(struct pnv_ioda_pe)); 544184cd4a3SBenjamin Herrenschmidt clear_bit(pe, phb->ioda.pe_alloc); 545184cd4a3SBenjamin Herrenschmidt } 546184cd4a3SBenjamin Herrenschmidt 547184cd4a3SBenjamin Herrenschmidt /* Currently those 2 are only used when MSIs are enabled, this will change 548184cd4a3SBenjamin Herrenschmidt * but in the meantime, we need to protect them to avoid warnings 549184cd4a3SBenjamin Herrenschmidt */ 550184cd4a3SBenjamin Herrenschmidt #ifdef CONFIG_PCI_MSI 551184cd4a3SBenjamin Herrenschmidt static struct pnv_ioda_pe * __devinit __pnv_ioda_get_one_pe(struct pci_dev *dev) 552184cd4a3SBenjamin Herrenschmidt { 553184cd4a3SBenjamin Herrenschmidt struct pci_controller *hose = pci_bus_to_host(dev->bus); 554184cd4a3SBenjamin Herrenschmidt struct pnv_phb *phb = hose->private_data; 555184cd4a3SBenjamin Herrenschmidt struct pci_dn *pdn = pnv_ioda_get_pdn(dev); 556184cd4a3SBenjamin Herrenschmidt 557184cd4a3SBenjamin Herrenschmidt if (!pdn) 558184cd4a3SBenjamin Herrenschmidt return NULL; 559184cd4a3SBenjamin Herrenschmidt if (pdn->pe_number == IODA_INVALID_PE) 560184cd4a3SBenjamin Herrenschmidt return NULL; 561184cd4a3SBenjamin Herrenschmidt return &phb->ioda.pe_array[pdn->pe_number]; 562184cd4a3SBenjamin Herrenschmidt } 563184cd4a3SBenjamin Herrenschmidt 564184cd4a3SBenjamin Herrenschmidt static struct pnv_ioda_pe * __devinit pnv_ioda_get_pe(struct pci_dev *dev) 565184cd4a3SBenjamin Herrenschmidt { 566184cd4a3SBenjamin Herrenschmidt struct pnv_ioda_pe *pe = __pnv_ioda_get_one_pe(dev); 567184cd4a3SBenjamin Herrenschmidt 568184cd4a3SBenjamin Herrenschmidt while (!pe && dev->bus->self) { 569184cd4a3SBenjamin Herrenschmidt dev = dev->bus->self; 570184cd4a3SBenjamin Herrenschmidt pe = __pnv_ioda_get_one_pe(dev); 571184cd4a3SBenjamin Herrenschmidt if (pe) 572184cd4a3SBenjamin Herrenschmidt pe = pe->bus_pe; 573184cd4a3SBenjamin Herrenschmidt } 574184cd4a3SBenjamin Herrenschmidt return pe; 575184cd4a3SBenjamin Herrenschmidt } 576184cd4a3SBenjamin Herrenschmidt #endif /* CONFIG_PCI_MSI */ 577184cd4a3SBenjamin Herrenschmidt 578184cd4a3SBenjamin Herrenschmidt static int __devinit pnv_ioda_configure_pe(struct pnv_phb *phb, 579184cd4a3SBenjamin Herrenschmidt struct pnv_ioda_pe *pe) 580184cd4a3SBenjamin Herrenschmidt { 581184cd4a3SBenjamin Herrenschmidt struct pci_dev *parent; 582184cd4a3SBenjamin Herrenschmidt uint8_t bcomp, dcomp, fcomp; 583184cd4a3SBenjamin Herrenschmidt long rc, rid_end, rid; 584184cd4a3SBenjamin Herrenschmidt 585184cd4a3SBenjamin Herrenschmidt /* Bus validation ? */ 586184cd4a3SBenjamin Herrenschmidt if (pe->pbus) { 587184cd4a3SBenjamin Herrenschmidt int count; 588184cd4a3SBenjamin Herrenschmidt 589184cd4a3SBenjamin Herrenschmidt dcomp = OPAL_IGNORE_RID_DEVICE_NUMBER; 590184cd4a3SBenjamin Herrenschmidt fcomp = OPAL_IGNORE_RID_FUNCTION_NUMBER; 591184cd4a3SBenjamin Herrenschmidt parent = pe->pbus->self; 592184cd4a3SBenjamin Herrenschmidt count = pe->pbus->subordinate - pe->pbus->secondary + 1; 593184cd4a3SBenjamin Herrenschmidt switch(count) { 594184cd4a3SBenjamin Herrenschmidt case 1: bcomp = OpalPciBusAll; break; 595184cd4a3SBenjamin Herrenschmidt case 2: bcomp = OpalPciBus7Bits; break; 596184cd4a3SBenjamin Herrenschmidt case 4: bcomp = OpalPciBus6Bits; break; 597184cd4a3SBenjamin Herrenschmidt case 8: bcomp = OpalPciBus5Bits; break; 598184cd4a3SBenjamin Herrenschmidt case 16: bcomp = OpalPciBus4Bits; break; 599184cd4a3SBenjamin Herrenschmidt case 32: bcomp = OpalPciBus3Bits; break; 600184cd4a3SBenjamin Herrenschmidt default: 601184cd4a3SBenjamin Herrenschmidt pr_err("%s: Number of subordinate busses %d" 602184cd4a3SBenjamin Herrenschmidt " unsupported\n", 603184cd4a3SBenjamin Herrenschmidt pci_name(pe->pbus->self), count); 604184cd4a3SBenjamin Herrenschmidt /* Do an exact match only */ 605184cd4a3SBenjamin Herrenschmidt bcomp = OpalPciBusAll; 606184cd4a3SBenjamin Herrenschmidt } 607184cd4a3SBenjamin Herrenschmidt rid_end = pe->rid + (count << 8); 608184cd4a3SBenjamin Herrenschmidt } else { 609184cd4a3SBenjamin Herrenschmidt parent = pe->pdev->bus->self; 610184cd4a3SBenjamin Herrenschmidt bcomp = OpalPciBusAll; 611184cd4a3SBenjamin Herrenschmidt dcomp = OPAL_COMPARE_RID_DEVICE_NUMBER; 612184cd4a3SBenjamin Herrenschmidt fcomp = OPAL_COMPARE_RID_FUNCTION_NUMBER; 613184cd4a3SBenjamin Herrenschmidt rid_end = pe->rid + 1; 614184cd4a3SBenjamin Herrenschmidt } 615184cd4a3SBenjamin Herrenschmidt 616184cd4a3SBenjamin Herrenschmidt /* Associate PE in PELT */ 617184cd4a3SBenjamin Herrenschmidt rc = opal_pci_set_pe(phb->opal_id, pe->pe_number, pe->rid, 618184cd4a3SBenjamin Herrenschmidt bcomp, dcomp, fcomp, OPAL_MAP_PE); 619184cd4a3SBenjamin Herrenschmidt if (rc) { 620184cd4a3SBenjamin Herrenschmidt pe_err(pe, "OPAL error %ld trying to setup PELT table\n", rc); 621184cd4a3SBenjamin Herrenschmidt return -ENXIO; 622184cd4a3SBenjamin Herrenschmidt } 623184cd4a3SBenjamin Herrenschmidt opal_pci_eeh_freeze_clear(phb->opal_id, pe->pe_number, 624184cd4a3SBenjamin Herrenschmidt OPAL_EEH_ACTION_CLEAR_FREEZE_ALL); 625184cd4a3SBenjamin Herrenschmidt 626184cd4a3SBenjamin Herrenschmidt /* Add to all parents PELT-V */ 627184cd4a3SBenjamin Herrenschmidt while (parent) { 628184cd4a3SBenjamin Herrenschmidt struct pci_dn *pdn = pnv_ioda_get_pdn(parent); 629184cd4a3SBenjamin Herrenschmidt if (pdn && pdn->pe_number != IODA_INVALID_PE) { 630184cd4a3SBenjamin Herrenschmidt rc = opal_pci_set_peltv(phb->opal_id, pdn->pe_number, 631cee72d5bSBenjamin Herrenschmidt pe->pe_number, OPAL_ADD_PE_TO_DOMAIN); 632184cd4a3SBenjamin Herrenschmidt /* XXX What to do in case of error ? */ 633184cd4a3SBenjamin Herrenschmidt } 634184cd4a3SBenjamin Herrenschmidt parent = parent->bus->self; 635184cd4a3SBenjamin Herrenschmidt } 636184cd4a3SBenjamin Herrenschmidt /* Setup reverse map */ 637184cd4a3SBenjamin Herrenschmidt for (rid = pe->rid; rid < rid_end; rid++) 638184cd4a3SBenjamin Herrenschmidt phb->ioda.pe_rmap[rid] = pe->pe_number; 639184cd4a3SBenjamin Herrenschmidt 640184cd4a3SBenjamin Herrenschmidt /* Setup one MVTs on IODA1 */ 641184cd4a3SBenjamin Herrenschmidt if (phb->type == PNV_PHB_IODA1) { 642184cd4a3SBenjamin Herrenschmidt pe->mve_number = pe->pe_number; 643184cd4a3SBenjamin Herrenschmidt rc = opal_pci_set_mve(phb->opal_id, pe->mve_number, 644184cd4a3SBenjamin Herrenschmidt pe->pe_number); 645184cd4a3SBenjamin Herrenschmidt if (rc) { 646184cd4a3SBenjamin Herrenschmidt pe_err(pe, "OPAL error %ld setting up MVE %d\n", 647184cd4a3SBenjamin Herrenschmidt rc, pe->mve_number); 648184cd4a3SBenjamin Herrenschmidt pe->mve_number = -1; 649184cd4a3SBenjamin Herrenschmidt } else { 650184cd4a3SBenjamin Herrenschmidt rc = opal_pci_set_mve_enable(phb->opal_id, 651cee72d5bSBenjamin Herrenschmidt pe->mve_number, OPAL_ENABLE_MVE); 652184cd4a3SBenjamin Herrenschmidt if (rc) { 653184cd4a3SBenjamin Herrenschmidt pe_err(pe, "OPAL error %ld enabling MVE %d\n", 654184cd4a3SBenjamin Herrenschmidt rc, pe->mve_number); 655184cd4a3SBenjamin Herrenschmidt pe->mve_number = -1; 656184cd4a3SBenjamin Herrenschmidt } 657184cd4a3SBenjamin Herrenschmidt } 658184cd4a3SBenjamin Herrenschmidt } else if (phb->type == PNV_PHB_IODA2) 659184cd4a3SBenjamin Herrenschmidt pe->mve_number = 0; 660184cd4a3SBenjamin Herrenschmidt 661184cd4a3SBenjamin Herrenschmidt return 0; 662184cd4a3SBenjamin Herrenschmidt } 663184cd4a3SBenjamin Herrenschmidt 664184cd4a3SBenjamin Herrenschmidt static void __devinit pnv_ioda_link_pe_by_weight(struct pnv_phb *phb, 665184cd4a3SBenjamin Herrenschmidt struct pnv_ioda_pe *pe) 666184cd4a3SBenjamin Herrenschmidt { 667184cd4a3SBenjamin Herrenschmidt struct pnv_ioda_pe *lpe; 668184cd4a3SBenjamin Herrenschmidt 669184cd4a3SBenjamin Herrenschmidt list_for_each_entry(lpe, &phb->ioda.pe_list, link) { 670184cd4a3SBenjamin Herrenschmidt if (lpe->dma_weight < pe->dma_weight) { 671184cd4a3SBenjamin Herrenschmidt list_add_tail(&pe->link, &lpe->link); 672184cd4a3SBenjamin Herrenschmidt return; 673184cd4a3SBenjamin Herrenschmidt } 674184cd4a3SBenjamin Herrenschmidt } 675184cd4a3SBenjamin Herrenschmidt list_add_tail(&pe->link, &phb->ioda.pe_list); 676184cd4a3SBenjamin Herrenschmidt } 677184cd4a3SBenjamin Herrenschmidt 678184cd4a3SBenjamin Herrenschmidt static unsigned int pnv_ioda_dma_weight(struct pci_dev *dev) 679184cd4a3SBenjamin Herrenschmidt { 680184cd4a3SBenjamin Herrenschmidt /* This is quite simplistic. The "base" weight of a device 681184cd4a3SBenjamin Herrenschmidt * is 10. 0 means no DMA is to be accounted for it. 682184cd4a3SBenjamin Herrenschmidt */ 683184cd4a3SBenjamin Herrenschmidt 684184cd4a3SBenjamin Herrenschmidt /* If it's a bridge, no DMA */ 685184cd4a3SBenjamin Herrenschmidt if (dev->hdr_type != PCI_HEADER_TYPE_NORMAL) 686184cd4a3SBenjamin Herrenschmidt return 0; 687184cd4a3SBenjamin Herrenschmidt 688184cd4a3SBenjamin Herrenschmidt /* Reduce the weight of slow USB controllers */ 689184cd4a3SBenjamin Herrenschmidt if (dev->class == PCI_CLASS_SERIAL_USB_UHCI || 690184cd4a3SBenjamin Herrenschmidt dev->class == PCI_CLASS_SERIAL_USB_OHCI || 691184cd4a3SBenjamin Herrenschmidt dev->class == PCI_CLASS_SERIAL_USB_EHCI) 692184cd4a3SBenjamin Herrenschmidt return 3; 693184cd4a3SBenjamin Herrenschmidt 694184cd4a3SBenjamin Herrenschmidt /* Increase the weight of RAID (includes Obsidian) */ 695184cd4a3SBenjamin Herrenschmidt if ((dev->class >> 8) == PCI_CLASS_STORAGE_RAID) 696184cd4a3SBenjamin Herrenschmidt return 15; 697184cd4a3SBenjamin Herrenschmidt 698184cd4a3SBenjamin Herrenschmidt /* Default */ 699184cd4a3SBenjamin Herrenschmidt return 10; 700184cd4a3SBenjamin Herrenschmidt } 701184cd4a3SBenjamin Herrenschmidt 702184cd4a3SBenjamin Herrenschmidt static struct pnv_ioda_pe * __devinit pnv_ioda_setup_dev_PE(struct pci_dev *dev) 703184cd4a3SBenjamin Herrenschmidt { 704184cd4a3SBenjamin Herrenschmidt struct pci_controller *hose = pci_bus_to_host(dev->bus); 705184cd4a3SBenjamin Herrenschmidt struct pnv_phb *phb = hose->private_data; 706184cd4a3SBenjamin Herrenschmidt struct pci_dn *pdn = pnv_ioda_get_pdn(dev); 707184cd4a3SBenjamin Herrenschmidt struct pnv_ioda_pe *pe; 708184cd4a3SBenjamin Herrenschmidt int pe_num; 709184cd4a3SBenjamin Herrenschmidt 710184cd4a3SBenjamin Herrenschmidt if (!pdn) { 711184cd4a3SBenjamin Herrenschmidt pr_err("%s: Device tree node not associated properly\n", 712184cd4a3SBenjamin Herrenschmidt pci_name(dev)); 713184cd4a3SBenjamin Herrenschmidt return NULL; 714184cd4a3SBenjamin Herrenschmidt } 715184cd4a3SBenjamin Herrenschmidt if (pdn->pe_number != IODA_INVALID_PE) 716184cd4a3SBenjamin Herrenschmidt return NULL; 717184cd4a3SBenjamin Herrenschmidt 718184cd4a3SBenjamin Herrenschmidt /* PE#0 has been pre-set */ 719184cd4a3SBenjamin Herrenschmidt if (dev->bus->number == 0) 720184cd4a3SBenjamin Herrenschmidt pe_num = 0; 721184cd4a3SBenjamin Herrenschmidt else 722184cd4a3SBenjamin Herrenschmidt pe_num = pnv_ioda_alloc_pe(phb); 723184cd4a3SBenjamin Herrenschmidt if (pe_num == IODA_INVALID_PE) { 724184cd4a3SBenjamin Herrenschmidt pr_warning("%s: Not enough PE# available, disabling device\n", 725184cd4a3SBenjamin Herrenschmidt pci_name(dev)); 726184cd4a3SBenjamin Herrenschmidt return NULL; 727184cd4a3SBenjamin Herrenschmidt } 728184cd4a3SBenjamin Herrenschmidt 729184cd4a3SBenjamin Herrenschmidt /* NOTE: We get only one ref to the pci_dev for the pdn, not for the 730184cd4a3SBenjamin Herrenschmidt * pointer in the PE data structure, both should be destroyed at the 731184cd4a3SBenjamin Herrenschmidt * same time. However, this needs to be looked at more closely again 732184cd4a3SBenjamin Herrenschmidt * once we actually start removing things (Hotplug, SR-IOV, ...) 733184cd4a3SBenjamin Herrenschmidt * 734184cd4a3SBenjamin Herrenschmidt * At some point we want to remove the PDN completely anyways 735184cd4a3SBenjamin Herrenschmidt */ 736184cd4a3SBenjamin Herrenschmidt pe = &phb->ioda.pe_array[pe_num]; 737184cd4a3SBenjamin Herrenschmidt pci_dev_get(dev); 738184cd4a3SBenjamin Herrenschmidt pdn->pcidev = dev; 739184cd4a3SBenjamin Herrenschmidt pdn->pe_number = pe_num; 740184cd4a3SBenjamin Herrenschmidt pe->pdev = dev; 741184cd4a3SBenjamin Herrenschmidt pe->pbus = NULL; 742184cd4a3SBenjamin Herrenschmidt pe->tce32_seg = -1; 743184cd4a3SBenjamin Herrenschmidt pe->mve_number = -1; 744184cd4a3SBenjamin Herrenschmidt pe->rid = dev->bus->number << 8 | pdn->devfn; 745184cd4a3SBenjamin Herrenschmidt 746184cd4a3SBenjamin Herrenschmidt pe_info(pe, "Associated device to PE\n"); 747184cd4a3SBenjamin Herrenschmidt 748184cd4a3SBenjamin Herrenschmidt if (pnv_ioda_configure_pe(phb, pe)) { 749184cd4a3SBenjamin Herrenschmidt /* XXX What do we do here ? */ 750184cd4a3SBenjamin Herrenschmidt if (pe_num) 751184cd4a3SBenjamin Herrenschmidt pnv_ioda_free_pe(phb, pe_num); 752184cd4a3SBenjamin Herrenschmidt pdn->pe_number = IODA_INVALID_PE; 753184cd4a3SBenjamin Herrenschmidt pe->pdev = NULL; 754184cd4a3SBenjamin Herrenschmidt pci_dev_put(dev); 755184cd4a3SBenjamin Herrenschmidt return NULL; 756184cd4a3SBenjamin Herrenschmidt } 757184cd4a3SBenjamin Herrenschmidt 758184cd4a3SBenjamin Herrenschmidt /* Assign a DMA weight to the device */ 759184cd4a3SBenjamin Herrenschmidt pe->dma_weight = pnv_ioda_dma_weight(dev); 760184cd4a3SBenjamin Herrenschmidt if (pe->dma_weight != 0) { 761184cd4a3SBenjamin Herrenschmidt phb->ioda.dma_weight += pe->dma_weight; 762184cd4a3SBenjamin Herrenschmidt phb->ioda.dma_pe_count++; 763184cd4a3SBenjamin Herrenschmidt } 764184cd4a3SBenjamin Herrenschmidt 765184cd4a3SBenjamin Herrenschmidt /* Link the PE */ 766184cd4a3SBenjamin Herrenschmidt pnv_ioda_link_pe_by_weight(phb, pe); 767184cd4a3SBenjamin Herrenschmidt 768184cd4a3SBenjamin Herrenschmidt return pe; 769184cd4a3SBenjamin Herrenschmidt } 770184cd4a3SBenjamin Herrenschmidt 771184cd4a3SBenjamin Herrenschmidt static void pnv_ioda_setup_same_PE(struct pci_bus *bus, struct pnv_ioda_pe *pe) 772184cd4a3SBenjamin Herrenschmidt { 773184cd4a3SBenjamin Herrenschmidt struct pci_dev *dev; 774184cd4a3SBenjamin Herrenschmidt 775184cd4a3SBenjamin Herrenschmidt list_for_each_entry(dev, &bus->devices, bus_list) { 776184cd4a3SBenjamin Herrenschmidt struct pci_dn *pdn = pnv_ioda_get_pdn(dev); 777184cd4a3SBenjamin Herrenschmidt 778184cd4a3SBenjamin Herrenschmidt if (pdn == NULL) { 779184cd4a3SBenjamin Herrenschmidt pr_warn("%s: No device node associated with device !\n", 780184cd4a3SBenjamin Herrenschmidt pci_name(dev)); 781184cd4a3SBenjamin Herrenschmidt continue; 782184cd4a3SBenjamin Herrenschmidt } 783184cd4a3SBenjamin Herrenschmidt pci_dev_get(dev); 784184cd4a3SBenjamin Herrenschmidt pdn->pcidev = dev; 785184cd4a3SBenjamin Herrenschmidt pdn->pe_number = pe->pe_number; 786184cd4a3SBenjamin Herrenschmidt pe->dma_weight += pnv_ioda_dma_weight(dev); 787184cd4a3SBenjamin Herrenschmidt if (dev->subordinate) 788184cd4a3SBenjamin Herrenschmidt pnv_ioda_setup_same_PE(dev->subordinate, pe); 789184cd4a3SBenjamin Herrenschmidt } 790184cd4a3SBenjamin Herrenschmidt } 791184cd4a3SBenjamin Herrenschmidt 792184cd4a3SBenjamin Herrenschmidt static void __devinit pnv_ioda_setup_bus_PE(struct pci_dev *dev, 793184cd4a3SBenjamin Herrenschmidt struct pnv_ioda_pe *ppe) 794184cd4a3SBenjamin Herrenschmidt { 795184cd4a3SBenjamin Herrenschmidt struct pci_controller *hose = pci_bus_to_host(dev->bus); 796184cd4a3SBenjamin Herrenschmidt struct pnv_phb *phb = hose->private_data; 797184cd4a3SBenjamin Herrenschmidt struct pci_bus *bus = dev->subordinate; 798184cd4a3SBenjamin Herrenschmidt struct pnv_ioda_pe *pe; 799184cd4a3SBenjamin Herrenschmidt int pe_num; 800184cd4a3SBenjamin Herrenschmidt 801184cd4a3SBenjamin Herrenschmidt if (!bus) { 802184cd4a3SBenjamin Herrenschmidt pr_warning("%s: Bridge without a subordinate bus !\n", 803184cd4a3SBenjamin Herrenschmidt pci_name(dev)); 804184cd4a3SBenjamin Herrenschmidt return; 805184cd4a3SBenjamin Herrenschmidt } 806184cd4a3SBenjamin Herrenschmidt pe_num = pnv_ioda_alloc_pe(phb); 807184cd4a3SBenjamin Herrenschmidt if (pe_num == IODA_INVALID_PE) { 808184cd4a3SBenjamin Herrenschmidt pr_warning("%s: Not enough PE# available, disabling bus\n", 809184cd4a3SBenjamin Herrenschmidt pci_name(dev)); 810184cd4a3SBenjamin Herrenschmidt return; 811184cd4a3SBenjamin Herrenschmidt } 812184cd4a3SBenjamin Herrenschmidt 813184cd4a3SBenjamin Herrenschmidt pe = &phb->ioda.pe_array[pe_num]; 814184cd4a3SBenjamin Herrenschmidt ppe->bus_pe = pe; 815184cd4a3SBenjamin Herrenschmidt pe->pbus = bus; 816184cd4a3SBenjamin Herrenschmidt pe->pdev = NULL; 817184cd4a3SBenjamin Herrenschmidt pe->tce32_seg = -1; 818184cd4a3SBenjamin Herrenschmidt pe->mve_number = -1; 819184cd4a3SBenjamin Herrenschmidt pe->rid = bus->secondary << 8; 820184cd4a3SBenjamin Herrenschmidt pe->dma_weight = 0; 821184cd4a3SBenjamin Herrenschmidt 822184cd4a3SBenjamin Herrenschmidt pe_info(pe, "Secondary busses %d..%d associated with PE\n", 823184cd4a3SBenjamin Herrenschmidt bus->secondary, bus->subordinate); 824184cd4a3SBenjamin Herrenschmidt 825184cd4a3SBenjamin Herrenschmidt if (pnv_ioda_configure_pe(phb, pe)) { 826184cd4a3SBenjamin Herrenschmidt /* XXX What do we do here ? */ 827184cd4a3SBenjamin Herrenschmidt if (pe_num) 828184cd4a3SBenjamin Herrenschmidt pnv_ioda_free_pe(phb, pe_num); 829184cd4a3SBenjamin Herrenschmidt pe->pbus = NULL; 830184cd4a3SBenjamin Herrenschmidt return; 831184cd4a3SBenjamin Herrenschmidt } 832184cd4a3SBenjamin Herrenschmidt 833184cd4a3SBenjamin Herrenschmidt /* Associate it with all child devices */ 834184cd4a3SBenjamin Herrenschmidt pnv_ioda_setup_same_PE(bus, pe); 835184cd4a3SBenjamin Herrenschmidt 836184cd4a3SBenjamin Herrenschmidt /* Account for one DMA PE if at least one DMA capable device exist 837184cd4a3SBenjamin Herrenschmidt * below the bridge 838184cd4a3SBenjamin Herrenschmidt */ 839184cd4a3SBenjamin Herrenschmidt if (pe->dma_weight != 0) { 840184cd4a3SBenjamin Herrenschmidt phb->ioda.dma_weight += pe->dma_weight; 841184cd4a3SBenjamin Herrenschmidt phb->ioda.dma_pe_count++; 842184cd4a3SBenjamin Herrenschmidt } 843184cd4a3SBenjamin Herrenschmidt 844184cd4a3SBenjamin Herrenschmidt /* Link the PE */ 845184cd4a3SBenjamin Herrenschmidt pnv_ioda_link_pe_by_weight(phb, pe); 846184cd4a3SBenjamin Herrenschmidt } 847184cd4a3SBenjamin Herrenschmidt 848184cd4a3SBenjamin Herrenschmidt static void __devinit pnv_ioda_setup_PEs(struct pci_bus *bus) 849184cd4a3SBenjamin Herrenschmidt { 850184cd4a3SBenjamin Herrenschmidt struct pci_dev *dev; 851184cd4a3SBenjamin Herrenschmidt struct pnv_ioda_pe *pe; 852184cd4a3SBenjamin Herrenschmidt 853184cd4a3SBenjamin Herrenschmidt list_for_each_entry(dev, &bus->devices, bus_list) { 854184cd4a3SBenjamin Herrenschmidt pe = pnv_ioda_setup_dev_PE(dev); 855184cd4a3SBenjamin Herrenschmidt if (pe == NULL) 856184cd4a3SBenjamin Herrenschmidt continue; 857184cd4a3SBenjamin Herrenschmidt /* Leaving the PCIe domain ... single PE# */ 858184cd4a3SBenjamin Herrenschmidt if (dev->pcie_type == PCI_EXP_TYPE_PCI_BRIDGE) 859184cd4a3SBenjamin Herrenschmidt pnv_ioda_setup_bus_PE(dev, pe); 860184cd4a3SBenjamin Herrenschmidt else if (dev->subordinate) 861184cd4a3SBenjamin Herrenschmidt pnv_ioda_setup_PEs(dev->subordinate); 862184cd4a3SBenjamin Herrenschmidt } 863184cd4a3SBenjamin Herrenschmidt } 864184cd4a3SBenjamin Herrenschmidt 865184cd4a3SBenjamin Herrenschmidt static void __devinit pnv_pci_ioda_dma_dev_setup(struct pnv_phb *phb, 866184cd4a3SBenjamin Herrenschmidt struct pci_dev *dev) 867184cd4a3SBenjamin Herrenschmidt { 868184cd4a3SBenjamin Herrenschmidt /* We delay DMA setup after we have assigned all PE# */ 869184cd4a3SBenjamin Herrenschmidt } 870184cd4a3SBenjamin Herrenschmidt 871184cd4a3SBenjamin Herrenschmidt static void __devinit pnv_ioda_setup_bus_dma(struct pnv_ioda_pe *pe, 872184cd4a3SBenjamin Herrenschmidt struct pci_bus *bus) 873184cd4a3SBenjamin Herrenschmidt { 874184cd4a3SBenjamin Herrenschmidt struct pci_dev *dev; 875184cd4a3SBenjamin Herrenschmidt 876184cd4a3SBenjamin Herrenschmidt list_for_each_entry(dev, &bus->devices, bus_list) { 877184cd4a3SBenjamin Herrenschmidt set_iommu_table_base(&dev->dev, &pe->tce32_table); 878184cd4a3SBenjamin Herrenschmidt if (dev->subordinate) 879184cd4a3SBenjamin Herrenschmidt pnv_ioda_setup_bus_dma(pe, dev->subordinate); 880184cd4a3SBenjamin Herrenschmidt } 881184cd4a3SBenjamin Herrenschmidt } 882184cd4a3SBenjamin Herrenschmidt 883184cd4a3SBenjamin Herrenschmidt static void __devinit pnv_pci_ioda_setup_dma_pe(struct pnv_phb *phb, 884184cd4a3SBenjamin Herrenschmidt struct pnv_ioda_pe *pe, 885184cd4a3SBenjamin Herrenschmidt unsigned int base, 886184cd4a3SBenjamin Herrenschmidt unsigned int segs) 887184cd4a3SBenjamin Herrenschmidt { 888184cd4a3SBenjamin Herrenschmidt 889184cd4a3SBenjamin Herrenschmidt struct page *tce_mem = NULL; 890184cd4a3SBenjamin Herrenschmidt const __be64 *swinvp; 891184cd4a3SBenjamin Herrenschmidt struct iommu_table *tbl; 892184cd4a3SBenjamin Herrenschmidt unsigned int i; 893184cd4a3SBenjamin Herrenschmidt int64_t rc; 894184cd4a3SBenjamin Herrenschmidt void *addr; 895184cd4a3SBenjamin Herrenschmidt 896184cd4a3SBenjamin Herrenschmidt /* 256M DMA window, 4K TCE pages, 8 bytes TCE */ 897184cd4a3SBenjamin Herrenschmidt #define TCE32_TABLE_SIZE ((0x10000000 / 0x1000) * 8) 898184cd4a3SBenjamin Herrenschmidt 899184cd4a3SBenjamin Herrenschmidt /* XXX FIXME: Handle 64-bit only DMA devices */ 900184cd4a3SBenjamin Herrenschmidt /* XXX FIXME: Provide 64-bit DMA facilities & non-4K TCE tables etc.. */ 901184cd4a3SBenjamin Herrenschmidt /* XXX FIXME: Allocate multi-level tables on PHB3 */ 902184cd4a3SBenjamin Herrenschmidt 903184cd4a3SBenjamin Herrenschmidt /* We shouldn't already have a 32-bit DMA associated */ 904184cd4a3SBenjamin Herrenschmidt if (WARN_ON(pe->tce32_seg >= 0)) 905184cd4a3SBenjamin Herrenschmidt return; 906184cd4a3SBenjamin Herrenschmidt 907184cd4a3SBenjamin Herrenschmidt /* Grab a 32-bit TCE table */ 908184cd4a3SBenjamin Herrenschmidt pe->tce32_seg = base; 909184cd4a3SBenjamin Herrenschmidt pe_info(pe, " Setting up 32-bit TCE table at %08x..%08x\n", 910184cd4a3SBenjamin Herrenschmidt (base << 28), ((base + segs) << 28) - 1); 911184cd4a3SBenjamin Herrenschmidt 912184cd4a3SBenjamin Herrenschmidt /* XXX Currently, we allocate one big contiguous table for the 913184cd4a3SBenjamin Herrenschmidt * TCEs. We only really need one chunk per 256M of TCE space 914184cd4a3SBenjamin Herrenschmidt * (ie per segment) but that's an optimization for later, it 915184cd4a3SBenjamin Herrenschmidt * requires some added smarts with our get/put_tce implementation 916184cd4a3SBenjamin Herrenschmidt */ 917184cd4a3SBenjamin Herrenschmidt tce_mem = alloc_pages_node(phb->hose->node, GFP_KERNEL, 918184cd4a3SBenjamin Herrenschmidt get_order(TCE32_TABLE_SIZE * segs)); 919184cd4a3SBenjamin Herrenschmidt if (!tce_mem) { 920184cd4a3SBenjamin Herrenschmidt pe_err(pe, " Failed to allocate a 32-bit TCE memory\n"); 921184cd4a3SBenjamin Herrenschmidt goto fail; 922184cd4a3SBenjamin Herrenschmidt } 923184cd4a3SBenjamin Herrenschmidt addr = page_address(tce_mem); 924184cd4a3SBenjamin Herrenschmidt memset(addr, 0, TCE32_TABLE_SIZE * segs); 925184cd4a3SBenjamin Herrenschmidt 926184cd4a3SBenjamin Herrenschmidt /* Configure HW */ 927184cd4a3SBenjamin Herrenschmidt for (i = 0; i < segs; i++) { 928184cd4a3SBenjamin Herrenschmidt rc = opal_pci_map_pe_dma_window(phb->opal_id, 929184cd4a3SBenjamin Herrenschmidt pe->pe_number, 930184cd4a3SBenjamin Herrenschmidt base + i, 1, 931184cd4a3SBenjamin Herrenschmidt __pa(addr) + TCE32_TABLE_SIZE * i, 932184cd4a3SBenjamin Herrenschmidt TCE32_TABLE_SIZE, 0x1000); 933184cd4a3SBenjamin Herrenschmidt if (rc) { 934184cd4a3SBenjamin Herrenschmidt pe_err(pe, " Failed to configure 32-bit TCE table," 935184cd4a3SBenjamin Herrenschmidt " err %ld\n", rc); 936184cd4a3SBenjamin Herrenschmidt goto fail; 937184cd4a3SBenjamin Herrenschmidt } 938184cd4a3SBenjamin Herrenschmidt } 939184cd4a3SBenjamin Herrenschmidt 940184cd4a3SBenjamin Herrenschmidt /* Setup linux iommu table */ 941184cd4a3SBenjamin Herrenschmidt tbl = &pe->tce32_table; 942184cd4a3SBenjamin Herrenschmidt pnv_pci_setup_iommu_table(tbl, addr, TCE32_TABLE_SIZE * segs, 943184cd4a3SBenjamin Herrenschmidt base << 28); 944184cd4a3SBenjamin Herrenschmidt 945184cd4a3SBenjamin Herrenschmidt /* OPAL variant of P7IOC SW invalidated TCEs */ 946184cd4a3SBenjamin Herrenschmidt swinvp = of_get_property(phb->hose->dn, "ibm,opal-tce-kill", NULL); 947184cd4a3SBenjamin Herrenschmidt if (swinvp) { 948184cd4a3SBenjamin Herrenschmidt /* We need a couple more fields -- an address and a data 949184cd4a3SBenjamin Herrenschmidt * to or. Since the bus is only printed out on table free 950184cd4a3SBenjamin Herrenschmidt * errors, and on the first pass the data will be a relative 951184cd4a3SBenjamin Herrenschmidt * bus number, print that out instead. 952184cd4a3SBenjamin Herrenschmidt */ 953184cd4a3SBenjamin Herrenschmidt tbl->it_busno = 0; 954184cd4a3SBenjamin Herrenschmidt tbl->it_index = (unsigned long)ioremap(be64_to_cpup(swinvp), 8); 955184cd4a3SBenjamin Herrenschmidt tbl->it_type = TCE_PCI_SWINV_CREATE | TCE_PCI_SWINV_FREE 956184cd4a3SBenjamin Herrenschmidt | TCE_PCI_SWINV_PAIR; 957184cd4a3SBenjamin Herrenschmidt } 958184cd4a3SBenjamin Herrenschmidt iommu_init_table(tbl, phb->hose->node); 959184cd4a3SBenjamin Herrenschmidt 960184cd4a3SBenjamin Herrenschmidt if (pe->pdev) 961184cd4a3SBenjamin Herrenschmidt set_iommu_table_base(&pe->pdev->dev, tbl); 962184cd4a3SBenjamin Herrenschmidt else 963184cd4a3SBenjamin Herrenschmidt pnv_ioda_setup_bus_dma(pe, pe->pbus); 964184cd4a3SBenjamin Herrenschmidt 965184cd4a3SBenjamin Herrenschmidt return; 966184cd4a3SBenjamin Herrenschmidt fail: 967184cd4a3SBenjamin Herrenschmidt /* XXX Failure: Try to fallback to 64-bit only ? */ 968184cd4a3SBenjamin Herrenschmidt if (pe->tce32_seg >= 0) 969184cd4a3SBenjamin Herrenschmidt pe->tce32_seg = -1; 970184cd4a3SBenjamin Herrenschmidt if (tce_mem) 971184cd4a3SBenjamin Herrenschmidt __free_pages(tce_mem, get_order(TCE32_TABLE_SIZE * segs)); 972184cd4a3SBenjamin Herrenschmidt } 973184cd4a3SBenjamin Herrenschmidt 974184cd4a3SBenjamin Herrenschmidt static void __devinit pnv_ioda_setup_dma(struct pnv_phb *phb) 975184cd4a3SBenjamin Herrenschmidt { 976184cd4a3SBenjamin Herrenschmidt struct pci_controller *hose = phb->hose; 977184cd4a3SBenjamin Herrenschmidt unsigned int residual, remaining, segs, tw, base; 978184cd4a3SBenjamin Herrenschmidt struct pnv_ioda_pe *pe; 979184cd4a3SBenjamin Herrenschmidt 980184cd4a3SBenjamin Herrenschmidt /* If we have more PE# than segments available, hand out one 981184cd4a3SBenjamin Herrenschmidt * per PE until we run out and let the rest fail. If not, 982184cd4a3SBenjamin Herrenschmidt * then we assign at least one segment per PE, plus more based 983184cd4a3SBenjamin Herrenschmidt * on the amount of devices under that PE 984184cd4a3SBenjamin Herrenschmidt */ 985184cd4a3SBenjamin Herrenschmidt if (phb->ioda.dma_pe_count > phb->ioda.tce32_count) 986184cd4a3SBenjamin Herrenschmidt residual = 0; 987184cd4a3SBenjamin Herrenschmidt else 988184cd4a3SBenjamin Herrenschmidt residual = phb->ioda.tce32_count - 989184cd4a3SBenjamin Herrenschmidt phb->ioda.dma_pe_count; 990184cd4a3SBenjamin Herrenschmidt 991184cd4a3SBenjamin Herrenschmidt pr_info("PCI: Domain %04x has %ld available 32-bit DMA segments\n", 992184cd4a3SBenjamin Herrenschmidt hose->global_number, phb->ioda.tce32_count); 993184cd4a3SBenjamin Herrenschmidt pr_info("PCI: %d PE# for a total weight of %d\n", 994184cd4a3SBenjamin Herrenschmidt phb->ioda.dma_pe_count, phb->ioda.dma_weight); 995184cd4a3SBenjamin Herrenschmidt 996184cd4a3SBenjamin Herrenschmidt /* Walk our PE list and configure their DMA segments, hand them 997184cd4a3SBenjamin Herrenschmidt * out one base segment plus any residual segments based on 998184cd4a3SBenjamin Herrenschmidt * weight 999184cd4a3SBenjamin Herrenschmidt */ 1000184cd4a3SBenjamin Herrenschmidt remaining = phb->ioda.tce32_count; 1001184cd4a3SBenjamin Herrenschmidt tw = phb->ioda.dma_weight; 1002184cd4a3SBenjamin Herrenschmidt base = 0; 1003184cd4a3SBenjamin Herrenschmidt list_for_each_entry(pe, &phb->ioda.pe_list, link) { 1004184cd4a3SBenjamin Herrenschmidt if (!pe->dma_weight) 1005184cd4a3SBenjamin Herrenschmidt continue; 1006184cd4a3SBenjamin Herrenschmidt if (!remaining) { 1007184cd4a3SBenjamin Herrenschmidt pe_warn(pe, "No DMA32 resources available\n"); 1008184cd4a3SBenjamin Herrenschmidt continue; 1009184cd4a3SBenjamin Herrenschmidt } 1010184cd4a3SBenjamin Herrenschmidt segs = 1; 1011184cd4a3SBenjamin Herrenschmidt if (residual) { 1012184cd4a3SBenjamin Herrenschmidt segs += ((pe->dma_weight * residual) + (tw / 2)) / tw; 1013184cd4a3SBenjamin Herrenschmidt if (segs > remaining) 1014184cd4a3SBenjamin Herrenschmidt segs = remaining; 1015184cd4a3SBenjamin Herrenschmidt } 1016184cd4a3SBenjamin Herrenschmidt pe_info(pe, "DMA weight %d, assigned %d DMA32 segments\n", 1017184cd4a3SBenjamin Herrenschmidt pe->dma_weight, segs); 1018184cd4a3SBenjamin Herrenschmidt pnv_pci_ioda_setup_dma_pe(phb, pe, base, segs); 1019184cd4a3SBenjamin Herrenschmidt remaining -= segs; 1020184cd4a3SBenjamin Herrenschmidt base += segs; 1021184cd4a3SBenjamin Herrenschmidt } 1022184cd4a3SBenjamin Herrenschmidt } 1023184cd4a3SBenjamin Herrenschmidt 1024184cd4a3SBenjamin Herrenschmidt #ifdef CONFIG_PCI_MSI 1025184cd4a3SBenjamin Herrenschmidt static int pnv_pci_ioda_msi_setup(struct pnv_phb *phb, struct pci_dev *dev, 1026184cd4a3SBenjamin Herrenschmidt unsigned int hwirq, unsigned int is_64, 1027184cd4a3SBenjamin Herrenschmidt struct msi_msg *msg) 1028184cd4a3SBenjamin Herrenschmidt { 1029184cd4a3SBenjamin Herrenschmidt struct pnv_ioda_pe *pe = pnv_ioda_get_pe(dev); 1030184cd4a3SBenjamin Herrenschmidt unsigned int xive_num = hwirq - phb->msi_base; 1031184cd4a3SBenjamin Herrenschmidt uint64_t addr64; 1032184cd4a3SBenjamin Herrenschmidt uint32_t addr32, data; 1033184cd4a3SBenjamin Herrenschmidt int rc; 1034184cd4a3SBenjamin Herrenschmidt 1035184cd4a3SBenjamin Herrenschmidt /* No PE assigned ? bail out ... no MSI for you ! */ 1036184cd4a3SBenjamin Herrenschmidt if (pe == NULL) 1037184cd4a3SBenjamin Herrenschmidt return -ENXIO; 1038184cd4a3SBenjamin Herrenschmidt 1039184cd4a3SBenjamin Herrenschmidt /* Check if we have an MVE */ 1040184cd4a3SBenjamin Herrenschmidt if (pe->mve_number < 0) 1041184cd4a3SBenjamin Herrenschmidt return -ENXIO; 1042184cd4a3SBenjamin Herrenschmidt 1043184cd4a3SBenjamin Herrenschmidt /* Assign XIVE to PE */ 1044184cd4a3SBenjamin Herrenschmidt rc = opal_pci_set_xive_pe(phb->opal_id, pe->pe_number, xive_num); 1045184cd4a3SBenjamin Herrenschmidt if (rc) { 1046184cd4a3SBenjamin Herrenschmidt pr_warn("%s: OPAL error %d setting XIVE %d PE\n", 1047184cd4a3SBenjamin Herrenschmidt pci_name(dev), rc, xive_num); 1048184cd4a3SBenjamin Herrenschmidt return -EIO; 1049184cd4a3SBenjamin Herrenschmidt } 1050184cd4a3SBenjamin Herrenschmidt 1051184cd4a3SBenjamin Herrenschmidt if (is_64) { 1052184cd4a3SBenjamin Herrenschmidt rc = opal_get_msi_64(phb->opal_id, pe->mve_number, xive_num, 1, 1053184cd4a3SBenjamin Herrenschmidt &addr64, &data); 1054184cd4a3SBenjamin Herrenschmidt if (rc) { 1055184cd4a3SBenjamin Herrenschmidt pr_warn("%s: OPAL error %d getting 64-bit MSI data\n", 1056184cd4a3SBenjamin Herrenschmidt pci_name(dev), rc); 1057184cd4a3SBenjamin Herrenschmidt return -EIO; 1058184cd4a3SBenjamin Herrenschmidt } 1059184cd4a3SBenjamin Herrenschmidt msg->address_hi = addr64 >> 32; 1060184cd4a3SBenjamin Herrenschmidt msg->address_lo = addr64 & 0xfffffffful; 1061184cd4a3SBenjamin Herrenschmidt } else { 1062184cd4a3SBenjamin Herrenschmidt rc = opal_get_msi_32(phb->opal_id, pe->mve_number, xive_num, 1, 1063184cd4a3SBenjamin Herrenschmidt &addr32, &data); 1064184cd4a3SBenjamin Herrenschmidt if (rc) { 1065184cd4a3SBenjamin Herrenschmidt pr_warn("%s: OPAL error %d getting 32-bit MSI data\n", 1066184cd4a3SBenjamin Herrenschmidt pci_name(dev), rc); 1067184cd4a3SBenjamin Herrenschmidt return -EIO; 1068184cd4a3SBenjamin Herrenschmidt } 1069184cd4a3SBenjamin Herrenschmidt msg->address_hi = 0; 1070184cd4a3SBenjamin Herrenschmidt msg->address_lo = addr32; 1071184cd4a3SBenjamin Herrenschmidt } 1072184cd4a3SBenjamin Herrenschmidt msg->data = data; 1073184cd4a3SBenjamin Herrenschmidt 1074184cd4a3SBenjamin Herrenschmidt pr_devel("%s: %s-bit MSI on hwirq %x (xive #%d)," 1075184cd4a3SBenjamin Herrenschmidt " address=%x_%08x data=%x PE# %d\n", 1076184cd4a3SBenjamin Herrenschmidt pci_name(dev), is_64 ? "64" : "32", hwirq, xive_num, 1077184cd4a3SBenjamin Herrenschmidt msg->address_hi, msg->address_lo, data, pe->pe_number); 1078184cd4a3SBenjamin Herrenschmidt 1079184cd4a3SBenjamin Herrenschmidt return 0; 1080184cd4a3SBenjamin Herrenschmidt } 1081184cd4a3SBenjamin Herrenschmidt 1082184cd4a3SBenjamin Herrenschmidt static void pnv_pci_init_ioda_msis(struct pnv_phb *phb) 1083184cd4a3SBenjamin Herrenschmidt { 1084184cd4a3SBenjamin Herrenschmidt unsigned int bmap_size; 1085184cd4a3SBenjamin Herrenschmidt const __be32 *prop = of_get_property(phb->hose->dn, 1086184cd4a3SBenjamin Herrenschmidt "ibm,opal-msi-ranges", NULL); 1087184cd4a3SBenjamin Herrenschmidt if (!prop) { 1088184cd4a3SBenjamin Herrenschmidt /* BML Fallback */ 1089184cd4a3SBenjamin Herrenschmidt prop = of_get_property(phb->hose->dn, "msi-ranges", NULL); 1090184cd4a3SBenjamin Herrenschmidt } 1091184cd4a3SBenjamin Herrenschmidt if (!prop) 1092184cd4a3SBenjamin Herrenschmidt return; 1093184cd4a3SBenjamin Herrenschmidt 1094184cd4a3SBenjamin Herrenschmidt phb->msi_base = be32_to_cpup(prop); 1095184cd4a3SBenjamin Herrenschmidt phb->msi_count = be32_to_cpup(prop + 1); 1096184cd4a3SBenjamin Herrenschmidt bmap_size = BITS_TO_LONGS(phb->msi_count) * sizeof(unsigned long); 1097184cd4a3SBenjamin Herrenschmidt phb->msi_map = zalloc_maybe_bootmem(bmap_size, GFP_KERNEL); 1098184cd4a3SBenjamin Herrenschmidt if (!phb->msi_map) { 1099184cd4a3SBenjamin Herrenschmidt pr_err("PCI %d: Failed to allocate MSI bitmap !\n", 1100184cd4a3SBenjamin Herrenschmidt phb->hose->global_number); 1101184cd4a3SBenjamin Herrenschmidt return; 1102184cd4a3SBenjamin Herrenschmidt } 1103184cd4a3SBenjamin Herrenschmidt phb->msi_setup = pnv_pci_ioda_msi_setup; 1104184cd4a3SBenjamin Herrenschmidt phb->msi32_support = 1; 1105184cd4a3SBenjamin Herrenschmidt pr_info(" Allocated bitmap for %d MSIs (base IRQ 0x%x)\n", 1106184cd4a3SBenjamin Herrenschmidt phb->msi_count, phb->msi_base); 1107184cd4a3SBenjamin Herrenschmidt } 1108184cd4a3SBenjamin Herrenschmidt #else 1109184cd4a3SBenjamin Herrenschmidt static void pnv_pci_init_ioda_msis(struct pnv_phb *phb) { } 1110184cd4a3SBenjamin Herrenschmidt #endif /* CONFIG_PCI_MSI */ 1111184cd4a3SBenjamin Herrenschmidt 1112184cd4a3SBenjamin Herrenschmidt /* This is the starting point of our IODA specific resource 1113184cd4a3SBenjamin Herrenschmidt * allocation process 1114184cd4a3SBenjamin Herrenschmidt */ 1115184cd4a3SBenjamin Herrenschmidt static void __devinit pnv_pci_ioda_fixup_phb(struct pci_controller *hose) 1116184cd4a3SBenjamin Herrenschmidt { 1117184cd4a3SBenjamin Herrenschmidt resource_size_t size, align; 1118184cd4a3SBenjamin Herrenschmidt struct pci_bus *child; 1119184cd4a3SBenjamin Herrenschmidt 1120184cd4a3SBenjamin Herrenschmidt /* Associate PEs per functions */ 1121184cd4a3SBenjamin Herrenschmidt pnv_ioda_setup_PEs(hose->bus); 1122184cd4a3SBenjamin Herrenschmidt 1123184cd4a3SBenjamin Herrenschmidt /* Calculate all resources */ 1124184cd4a3SBenjamin Herrenschmidt pnv_ioda_calc_bus(hose->bus, IORESOURCE_IO, &size, &align); 1125184cd4a3SBenjamin Herrenschmidt pnv_ioda_calc_bus(hose->bus, IORESOURCE_MEM, &size, &align); 1126184cd4a3SBenjamin Herrenschmidt 1127184cd4a3SBenjamin Herrenschmidt /* Apply then to HW */ 1128184cd4a3SBenjamin Herrenschmidt pnv_ioda_update_resources(hose->bus); 1129184cd4a3SBenjamin Herrenschmidt 1130184cd4a3SBenjamin Herrenschmidt /* Setup DMA */ 1131184cd4a3SBenjamin Herrenschmidt pnv_ioda_setup_dma(hose->private_data); 1132184cd4a3SBenjamin Herrenschmidt 1133184cd4a3SBenjamin Herrenschmidt /* Configure PCI Express settings */ 1134184cd4a3SBenjamin Herrenschmidt list_for_each_entry(child, &hose->bus->children, node) { 1135184cd4a3SBenjamin Herrenschmidt struct pci_dev *self = child->self; 1136184cd4a3SBenjamin Herrenschmidt if (!self) 1137184cd4a3SBenjamin Herrenschmidt continue; 1138184cd4a3SBenjamin Herrenschmidt pcie_bus_configure_settings(child, self->pcie_mpss); 1139184cd4a3SBenjamin Herrenschmidt } 1140184cd4a3SBenjamin Herrenschmidt } 1141184cd4a3SBenjamin Herrenschmidt 1142184cd4a3SBenjamin Herrenschmidt /* Prevent enabling devices for which we couldn't properly 1143184cd4a3SBenjamin Herrenschmidt * assign a PE 1144184cd4a3SBenjamin Herrenschmidt */ 1145184cd4a3SBenjamin Herrenschmidt static int __devinit pnv_pci_enable_device_hook(struct pci_dev *dev) 1146184cd4a3SBenjamin Herrenschmidt { 1147184cd4a3SBenjamin Herrenschmidt struct pci_dn *pdn = pnv_ioda_get_pdn(dev); 1148184cd4a3SBenjamin Herrenschmidt 1149184cd4a3SBenjamin Herrenschmidt if (!pdn || pdn->pe_number == IODA_INVALID_PE) 1150184cd4a3SBenjamin Herrenschmidt return -EINVAL; 1151184cd4a3SBenjamin Herrenschmidt return 0; 1152184cd4a3SBenjamin Herrenschmidt } 1153184cd4a3SBenjamin Herrenschmidt 1154184cd4a3SBenjamin Herrenschmidt static u32 pnv_ioda_bdfn_to_pe(struct pnv_phb *phb, struct pci_bus *bus, 1155184cd4a3SBenjamin Herrenschmidt u32 devfn) 1156184cd4a3SBenjamin Herrenschmidt { 1157184cd4a3SBenjamin Herrenschmidt return phb->ioda.pe_rmap[(bus->number << 8) | devfn]; 1158184cd4a3SBenjamin Herrenschmidt } 1159184cd4a3SBenjamin Herrenschmidt 1160184cd4a3SBenjamin Herrenschmidt void __init pnv_pci_init_ioda1_phb(struct device_node *np) 1161184cd4a3SBenjamin Herrenschmidt { 1162184cd4a3SBenjamin Herrenschmidt struct pci_controller *hose; 1163184cd4a3SBenjamin Herrenschmidt static int primary = 1; 1164184cd4a3SBenjamin Herrenschmidt struct pnv_phb *phb; 1165184cd4a3SBenjamin Herrenschmidt unsigned long size, m32map_off, iomap_off, pemap_off; 1166184cd4a3SBenjamin Herrenschmidt const u64 *prop64; 1167184cd4a3SBenjamin Herrenschmidt u64 phb_id; 1168184cd4a3SBenjamin Herrenschmidt void *aux; 1169184cd4a3SBenjamin Herrenschmidt long rc; 1170184cd4a3SBenjamin Herrenschmidt 1171184cd4a3SBenjamin Herrenschmidt pr_info(" Initializing IODA OPAL PHB %s\n", np->full_name); 1172184cd4a3SBenjamin Herrenschmidt 1173184cd4a3SBenjamin Herrenschmidt prop64 = of_get_property(np, "ibm,opal-phbid", NULL); 1174184cd4a3SBenjamin Herrenschmidt if (!prop64) { 1175184cd4a3SBenjamin Herrenschmidt pr_err(" Missing \"ibm,opal-phbid\" property !\n"); 1176184cd4a3SBenjamin Herrenschmidt return; 1177184cd4a3SBenjamin Herrenschmidt } 1178184cd4a3SBenjamin Herrenschmidt phb_id = be64_to_cpup(prop64); 1179184cd4a3SBenjamin Herrenschmidt pr_debug(" PHB-ID : 0x%016llx\n", phb_id); 1180184cd4a3SBenjamin Herrenschmidt 1181184cd4a3SBenjamin Herrenschmidt phb = alloc_bootmem(sizeof(struct pnv_phb)); 1182184cd4a3SBenjamin Herrenschmidt if (phb) { 1183184cd4a3SBenjamin Herrenschmidt memset(phb, 0, sizeof(struct pnv_phb)); 1184184cd4a3SBenjamin Herrenschmidt phb->hose = hose = pcibios_alloc_controller(np); 1185184cd4a3SBenjamin Herrenschmidt } 1186184cd4a3SBenjamin Herrenschmidt if (!phb || !phb->hose) { 1187184cd4a3SBenjamin Herrenschmidt pr_err("PCI: Failed to allocate PCI controller for %s\n", 1188184cd4a3SBenjamin Herrenschmidt np->full_name); 1189184cd4a3SBenjamin Herrenschmidt return; 1190184cd4a3SBenjamin Herrenschmidt } 1191184cd4a3SBenjamin Herrenschmidt 1192184cd4a3SBenjamin Herrenschmidt spin_lock_init(&phb->lock); 1193184cd4a3SBenjamin Herrenschmidt /* XXX Use device-tree */ 1194184cd4a3SBenjamin Herrenschmidt hose->first_busno = 0; 1195184cd4a3SBenjamin Herrenschmidt hose->last_busno = 0xff; 1196184cd4a3SBenjamin Herrenschmidt hose->private_data = phb; 1197184cd4a3SBenjamin Herrenschmidt phb->opal_id = phb_id; 1198184cd4a3SBenjamin Herrenschmidt phb->type = PNV_PHB_IODA1; 1199184cd4a3SBenjamin Herrenschmidt 1200cee72d5bSBenjamin Herrenschmidt /* Detect specific models for error handling */ 1201cee72d5bSBenjamin Herrenschmidt if (of_device_is_compatible(np, "ibm,p7ioc-pciex")) 1202cee72d5bSBenjamin Herrenschmidt phb->model = PNV_PHB_MODEL_P7IOC; 1203cee72d5bSBenjamin Herrenschmidt else 1204cee72d5bSBenjamin Herrenschmidt phb->model = PNV_PHB_MODEL_UNKNOWN; 1205cee72d5bSBenjamin Herrenschmidt 1206184cd4a3SBenjamin Herrenschmidt /* We parse "ranges" now since we need to deduce the register base 1207184cd4a3SBenjamin Herrenschmidt * from the IO base 1208184cd4a3SBenjamin Herrenschmidt */ 1209184cd4a3SBenjamin Herrenschmidt pci_process_bridge_OF_ranges(phb->hose, np, primary); 1210184cd4a3SBenjamin Herrenschmidt primary = 0; 1211184cd4a3SBenjamin Herrenschmidt 1212184cd4a3SBenjamin Herrenschmidt /* Magic formula from Milton */ 1213184cd4a3SBenjamin Herrenschmidt phb->regs = of_iomap(np, 0); 1214184cd4a3SBenjamin Herrenschmidt if (phb->regs == NULL) 1215184cd4a3SBenjamin Herrenschmidt pr_err(" Failed to map registers !\n"); 1216184cd4a3SBenjamin Herrenschmidt 1217184cd4a3SBenjamin Herrenschmidt 1218184cd4a3SBenjamin Herrenschmidt /* XXX This is hack-a-thon. This needs to be changed so that: 1219184cd4a3SBenjamin Herrenschmidt * - we obtain stuff like PE# etc... from device-tree 1220184cd4a3SBenjamin Herrenschmidt * - we properly re-allocate M32 ourselves 1221184cd4a3SBenjamin Herrenschmidt * (the OFW one isn't very good) 1222184cd4a3SBenjamin Herrenschmidt */ 1223184cd4a3SBenjamin Herrenschmidt 1224184cd4a3SBenjamin Herrenschmidt /* Initialize more IODA stuff */ 1225184cd4a3SBenjamin Herrenschmidt phb->ioda.total_pe = 128; 1226184cd4a3SBenjamin Herrenschmidt 1227184cd4a3SBenjamin Herrenschmidt phb->ioda.m32_size = resource_size(&hose->mem_resources[0]); 1228184cd4a3SBenjamin Herrenschmidt /* OFW Has already off top 64k of M32 space (MSI space) */ 1229184cd4a3SBenjamin Herrenschmidt phb->ioda.m32_size += 0x10000; 1230184cd4a3SBenjamin Herrenschmidt 1231184cd4a3SBenjamin Herrenschmidt phb->ioda.m32_segsize = phb->ioda.m32_size / phb->ioda.total_pe; 1232184cd4a3SBenjamin Herrenschmidt phb->ioda.m32_pci_base = hose->mem_resources[0].start - 1233184cd4a3SBenjamin Herrenschmidt hose->pci_mem_offset; 1234184cd4a3SBenjamin Herrenschmidt phb->ioda.io_size = hose->pci_io_size; 1235184cd4a3SBenjamin Herrenschmidt phb->ioda.io_segsize = phb->ioda.io_size / phb->ioda.total_pe; 1236184cd4a3SBenjamin Herrenschmidt phb->ioda.io_pci_base = 0; /* XXX calculate this ? */ 1237184cd4a3SBenjamin Herrenschmidt 1238184cd4a3SBenjamin Herrenschmidt /* Allocate aux data & arrays */ 1239184cd4a3SBenjamin Herrenschmidt size = _ALIGN_UP(phb->ioda.total_pe / 8, sizeof(unsigned long)); 1240184cd4a3SBenjamin Herrenschmidt m32map_off = size; 1241184cd4a3SBenjamin Herrenschmidt size += phb->ioda.total_pe; 1242184cd4a3SBenjamin Herrenschmidt iomap_off = size; 1243184cd4a3SBenjamin Herrenschmidt size += phb->ioda.total_pe; 1244184cd4a3SBenjamin Herrenschmidt pemap_off = size; 1245184cd4a3SBenjamin Herrenschmidt size += phb->ioda.total_pe * sizeof(struct pnv_ioda_pe); 1246184cd4a3SBenjamin Herrenschmidt aux = alloc_bootmem(size); 1247184cd4a3SBenjamin Herrenschmidt memset(aux, 0, size); 1248184cd4a3SBenjamin Herrenschmidt phb->ioda.pe_alloc = aux; 1249184cd4a3SBenjamin Herrenschmidt phb->ioda.m32_segmap = aux + m32map_off; 1250184cd4a3SBenjamin Herrenschmidt phb->ioda.io_segmap = aux + iomap_off; 1251184cd4a3SBenjamin Herrenschmidt phb->ioda.pe_array = aux + pemap_off; 1252184cd4a3SBenjamin Herrenschmidt set_bit(0, phb->ioda.pe_alloc); 1253184cd4a3SBenjamin Herrenschmidt 1254184cd4a3SBenjamin Herrenschmidt INIT_LIST_HEAD(&phb->ioda.pe_list); 1255184cd4a3SBenjamin Herrenschmidt 1256184cd4a3SBenjamin Herrenschmidt /* Calculate how many 32-bit TCE segments we have */ 1257184cd4a3SBenjamin Herrenschmidt phb->ioda.tce32_count = phb->ioda.m32_pci_base >> 28; 1258184cd4a3SBenjamin Herrenschmidt 1259184cd4a3SBenjamin Herrenschmidt /* Clear unusable m64 */ 1260184cd4a3SBenjamin Herrenschmidt hose->mem_resources[1].flags = 0; 1261184cd4a3SBenjamin Herrenschmidt hose->mem_resources[1].start = 0; 1262184cd4a3SBenjamin Herrenschmidt hose->mem_resources[1].end = 0; 1263184cd4a3SBenjamin Herrenschmidt hose->mem_resources[2].flags = 0; 1264184cd4a3SBenjamin Herrenschmidt hose->mem_resources[2].start = 0; 1265184cd4a3SBenjamin Herrenschmidt hose->mem_resources[2].end = 0; 1266184cd4a3SBenjamin Herrenschmidt 1267184cd4a3SBenjamin Herrenschmidt #if 0 1268184cd4a3SBenjamin Herrenschmidt rc = opal_pci_set_phb_mem_window(opal->phb_id, 1269184cd4a3SBenjamin Herrenschmidt window_type, 1270184cd4a3SBenjamin Herrenschmidt window_num, 1271184cd4a3SBenjamin Herrenschmidt starting_real_address, 1272184cd4a3SBenjamin Herrenschmidt starting_pci_address, 1273184cd4a3SBenjamin Herrenschmidt segment_size); 1274184cd4a3SBenjamin Herrenschmidt #endif 1275184cd4a3SBenjamin Herrenschmidt 1276184cd4a3SBenjamin Herrenschmidt pr_info(" %d PE's M32: 0x%x [segment=0x%x] IO: 0x%x [segment=0x%x]\n", 1277184cd4a3SBenjamin Herrenschmidt phb->ioda.total_pe, 1278184cd4a3SBenjamin Herrenschmidt phb->ioda.m32_size, phb->ioda.m32_segsize, 1279184cd4a3SBenjamin Herrenschmidt phb->ioda.io_size, phb->ioda.io_segsize); 1280184cd4a3SBenjamin Herrenschmidt 1281184cd4a3SBenjamin Herrenschmidt if (phb->regs) { 1282184cd4a3SBenjamin Herrenschmidt pr_devel(" BUID = 0x%016llx\n", in_be64(phb->regs + 0x100)); 1283184cd4a3SBenjamin Herrenschmidt pr_devel(" PHB2_CR = 0x%016llx\n", in_be64(phb->regs + 0x160)); 1284184cd4a3SBenjamin Herrenschmidt pr_devel(" IO_BAR = 0x%016llx\n", in_be64(phb->regs + 0x170)); 1285184cd4a3SBenjamin Herrenschmidt pr_devel(" IO_BAMR = 0x%016llx\n", in_be64(phb->regs + 0x178)); 1286184cd4a3SBenjamin Herrenschmidt pr_devel(" IO_SAR = 0x%016llx\n", in_be64(phb->regs + 0x180)); 1287184cd4a3SBenjamin Herrenschmidt pr_devel(" M32_BAR = 0x%016llx\n", in_be64(phb->regs + 0x190)); 1288184cd4a3SBenjamin Herrenschmidt pr_devel(" M32_BAMR = 0x%016llx\n", in_be64(phb->regs + 0x198)); 1289184cd4a3SBenjamin Herrenschmidt pr_devel(" M32_SAR = 0x%016llx\n", in_be64(phb->regs + 0x1a0)); 1290184cd4a3SBenjamin Herrenschmidt } 1291184cd4a3SBenjamin Herrenschmidt phb->hose->ops = &pnv_pci_ops; 1292184cd4a3SBenjamin Herrenschmidt 1293184cd4a3SBenjamin Herrenschmidt /* Setup RID -> PE mapping function */ 1294184cd4a3SBenjamin Herrenschmidt phb->bdfn_to_pe = pnv_ioda_bdfn_to_pe; 1295184cd4a3SBenjamin Herrenschmidt 1296184cd4a3SBenjamin Herrenschmidt /* Setup TCEs */ 1297184cd4a3SBenjamin Herrenschmidt phb->dma_dev_setup = pnv_pci_ioda_dma_dev_setup; 1298184cd4a3SBenjamin Herrenschmidt 1299184cd4a3SBenjamin Herrenschmidt /* Setup MSI support */ 1300184cd4a3SBenjamin Herrenschmidt pnv_pci_init_ioda_msis(phb); 1301184cd4a3SBenjamin Herrenschmidt 1302673c9756SBjorn Helgaas /* We set both PCI_PROBE_ONLY and PCI_REASSIGN_ALL_RSRC. This is an 1303184cd4a3SBenjamin Herrenschmidt * odd combination which essentially means that we skip all resource 1304184cd4a3SBenjamin Herrenschmidt * fixups and assignments in the generic code, and do it all 1305184cd4a3SBenjamin Herrenschmidt * ourselves here 1306184cd4a3SBenjamin Herrenschmidt */ 1307184cd4a3SBenjamin Herrenschmidt ppc_md.pcibios_fixup_phb = pnv_pci_ioda_fixup_phb; 1308184cd4a3SBenjamin Herrenschmidt ppc_md.pcibios_enable_device_hook = pnv_pci_enable_device_hook; 1309673c9756SBjorn Helgaas pci_add_flags(PCI_PROBE_ONLY | PCI_REASSIGN_ALL_RSRC); 1310184cd4a3SBenjamin Herrenschmidt 1311184cd4a3SBenjamin Herrenschmidt /* Reset IODA tables to a clean state */ 1312f11fe552SBenjamin Herrenschmidt rc = opal_pci_reset(phb_id, OPAL_PCI_IODA_TABLE_RESET, OPAL_ASSERT_RESET); 1313184cd4a3SBenjamin Herrenschmidt if (rc) 1314f11fe552SBenjamin Herrenschmidt pr_warning(" OPAL Error %ld performing IODA table reset !\n", rc); 1315184cd4a3SBenjamin Herrenschmidt opal_pci_set_pe(phb_id, 0, 0, 7, 1, 1 , OPAL_MAP_PE); 1316184cd4a3SBenjamin Herrenschmidt } 1317184cd4a3SBenjamin Herrenschmidt 1318184cd4a3SBenjamin Herrenschmidt void __init pnv_pci_init_ioda_hub(struct device_node *np) 1319184cd4a3SBenjamin Herrenschmidt { 1320184cd4a3SBenjamin Herrenschmidt struct device_node *phbn; 1321184cd4a3SBenjamin Herrenschmidt const u64 *prop64; 1322184cd4a3SBenjamin Herrenschmidt u64 hub_id; 1323184cd4a3SBenjamin Herrenschmidt 1324184cd4a3SBenjamin Herrenschmidt pr_info("Probing IODA IO-Hub %s\n", np->full_name); 1325184cd4a3SBenjamin Herrenschmidt 1326184cd4a3SBenjamin Herrenschmidt prop64 = of_get_property(np, "ibm,opal-hubid", NULL); 1327184cd4a3SBenjamin Herrenschmidt if (!prop64) { 1328184cd4a3SBenjamin Herrenschmidt pr_err(" Missing \"ibm,opal-hubid\" property !\n"); 1329184cd4a3SBenjamin Herrenschmidt return; 1330184cd4a3SBenjamin Herrenschmidt } 1331184cd4a3SBenjamin Herrenschmidt hub_id = be64_to_cpup(prop64); 1332184cd4a3SBenjamin Herrenschmidt pr_devel(" HUB-ID : 0x%016llx\n", hub_id); 1333184cd4a3SBenjamin Herrenschmidt 1334184cd4a3SBenjamin Herrenschmidt /* Count child PHBs */ 1335184cd4a3SBenjamin Herrenschmidt for_each_child_of_node(np, phbn) { 1336184cd4a3SBenjamin Herrenschmidt /* Look for IODA1 PHBs */ 1337184cd4a3SBenjamin Herrenschmidt if (of_device_is_compatible(phbn, "ibm,ioda-phb")) 1338184cd4a3SBenjamin Herrenschmidt pnv_pci_init_ioda1_phb(phbn); 1339184cd4a3SBenjamin Herrenschmidt } 1340184cd4a3SBenjamin Herrenschmidt } 1341