/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 1992 - 1997, 2000-2004 Silicon Graphics, Inc. All rights reserved. */ #include #include #include #include #include #include #include #include #include #include #include #include #include "xtalk/hubdev.h" #include "xtalk/xwidgetdev.h" nasid_t master_nasid = INVALID_NASID; /* Partition Master */ struct slab_info { struct hubdev_info hubdev; }; struct brick { moduleid_t id; /* Module ID of this module */ struct slab_info slab_info[MAX_SLABS + 1]; }; int sn_ioif_inited = 0; /* SN I/O infrastructure initialized? */ struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES]; /* indexed by asic type */ /* * Hooks and struct for unsupported pci providers */ static dma_addr_t sn_default_pci_map(struct pci_dev *pdev, unsigned long paddr, size_t size) { return 0; } static void sn_default_pci_unmap(struct pci_dev *pdev, dma_addr_t addr, int direction) { return; } static void * sn_default_pci_bus_fixup(struct pcibus_bussoft *soft) { return NULL; } static struct sn_pcibus_provider sn_pci_default_provider = { .dma_map = sn_default_pci_map, .dma_map_consistent = sn_default_pci_map, .dma_unmap = sn_default_pci_unmap, .bus_fixup = sn_default_pci_bus_fixup, }; /* * Retrieve the DMA Flush List given nasid. This list is needed * to implement the WAR - Flush DMA data on PIO Reads. */ static inline uint64_t sal_get_widget_dmaflush_list(u64 nasid, u64 widget_num, u64 address) { struct ia64_sal_retval ret_stuff; ret_stuff.status = 0; ret_stuff.v0 = 0; SAL_CALL_NOLOCK(ret_stuff, (u64) SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST, (u64) nasid, (u64) widget_num, (u64) address, 0, 0, 0, 0); return ret_stuff.v0; } /* * Retrieve the hub device info structure for the given nasid. */ static inline uint64_t sal_get_hubdev_info(u64 handle, u64 address) { struct ia64_sal_retval ret_stuff; ret_stuff.status = 0; ret_stuff.v0 = 0; SAL_CALL_NOLOCK(ret_stuff, (u64) SN_SAL_IOIF_GET_HUBDEV_INFO, (u64) handle, (u64) address, 0, 0, 0, 0, 0); return ret_stuff.v0; } /* * Retrieve the pci bus information given the bus number. */ static inline uint64_t sal_get_pcibus_info(u64 segment, u64 busnum, u64 address) { struct ia64_sal_retval ret_stuff; ret_stuff.status = 0; ret_stuff.v0 = 0; SAL_CALL_NOLOCK(ret_stuff, (u64) SN_SAL_IOIF_GET_PCIBUS_INFO, (u64) segment, (u64) busnum, (u64) address, 0, 0, 0, 0); return ret_stuff.v0; } /* * Retrieve the pci device information given the bus and device|function number. */ static inline uint64_t sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev, u64 sn_irq_info) { struct ia64_sal_retval ret_stuff; ret_stuff.status = 0; ret_stuff.v0 = 0; SAL_CALL_NOLOCK(ret_stuff, (u64) SN_SAL_IOIF_GET_PCIDEV_INFO, (u64) segment, (u64) bus_number, (u64) devfn, (u64) pci_dev, sn_irq_info, 0, 0); return ret_stuff.v0; } /* * sn_alloc_pci_sysdata() - This routine allocates a pci controller * which is expected as the pci_dev and pci_bus sysdata by the Linux * PCI infrastructure. */ static inline struct pci_controller *sn_alloc_pci_sysdata(void) { struct pci_controller *pci_sysdata; pci_sysdata = kmalloc(sizeof(*pci_sysdata), GFP_KERNEL); if (!pci_sysdata) BUG(); memset(pci_sysdata, 0, sizeof(*pci_sysdata)); return pci_sysdata; } /* * sn_fixup_ionodes() - This routine initializes the HUB data strcuture for * each node in the system. */ static void sn_fixup_ionodes(void) { struct sn_flush_device_list *sn_flush_device_list; struct hubdev_info *hubdev; uint64_t status; uint64_t nasid; int i, widget; for (i = 0; i < numionodes; i++) { hubdev = (struct hubdev_info *)(NODEPDA(i)->pdinfo); nasid = cnodeid_to_nasid(i); status = sal_get_hubdev_info(nasid, (uint64_t) __pa(hubdev)); if (status) continue; /* Attach the error interrupt handlers */ if (nasid & 1) ice_error_init(hubdev); else hub_error_init(hubdev); for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) hubdev->hdi_xwidget_info[widget].xwi_hubinfo = hubdev; if (!hubdev->hdi_flush_nasid_list.widget_p) continue; hubdev->hdi_flush_nasid_list.widget_p = kmalloc((HUB_WIDGET_ID_MAX + 1) * sizeof(struct sn_flush_device_list *), GFP_KERNEL); memset(hubdev->hdi_flush_nasid_list.widget_p, 0x0, (HUB_WIDGET_ID_MAX + 1) * sizeof(struct sn_flush_device_list *)); for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) { sn_flush_device_list = kmalloc(DEV_PER_WIDGET * sizeof(struct sn_flush_device_list), GFP_KERNEL); memset(sn_flush_device_list, 0x0, DEV_PER_WIDGET * sizeof(struct sn_flush_device_list)); status = sal_get_widget_dmaflush_list(nasid, widget, (uint64_t) __pa (sn_flush_device_list)); if (status) { kfree(sn_flush_device_list); continue; } hubdev->hdi_flush_nasid_list.widget_p[widget] = sn_flush_device_list; } } } /* * sn_pci_fixup_slot() - This routine sets up a slot's resources * consistent with the Linux PCI abstraction layer. Resources acquired * from our PCI provider include PIO maps to BAR space and interrupt * objects. */ void sn_pci_fixup_slot(struct pci_dev *dev) { int idx; int segment = 0; int status = 0; struct pcibus_bussoft *bs; struct pci_bus *host_pci_bus; struct pci_dev *host_pci_dev; struct sn_irq_info *sn_irq_info; unsigned long size; unsigned int bus_no, devfn; dev->sysdata = kmalloc(sizeof(struct pcidev_info), GFP_KERNEL); if (SN_PCIDEV_INFO(dev) <= 0) BUG(); /* Cannot afford to run out of memory */ memset(SN_PCIDEV_INFO(dev), 0, sizeof(struct pcidev_info)); sn_irq_info = kmalloc(sizeof(struct sn_irq_info), GFP_KERNEL); if (sn_irq_info <= 0) BUG(); /* Cannot afford to run out of memory */ memset(sn_irq_info, 0, sizeof(struct sn_irq_info)); /* Call to retrieve pci device information needed by kernel. */ status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number, dev->devfn, (u64) __pa(SN_PCIDEV_INFO(dev)), (u64) __pa(sn_irq_info)); if (status) BUG(); /* Cannot get platform pci device information */ /* Copy over PIO Mapped Addresses */ for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) { unsigned long start, end, addr; if (!SN_PCIDEV_INFO(dev)->pdi_pio_mapped_addr[idx]) continue; start = dev->resource[idx].start; end = dev->resource[idx].end; size = end - start; addr = SN_PCIDEV_INFO(dev)->pdi_pio_mapped_addr[idx]; addr = ((addr << 4) >> 4) | __IA64_UNCACHED_OFFSET; dev->resource[idx].start = addr; dev->resource[idx].end = addr + size; if (dev->resource[idx].flags & IORESOURCE_IO) dev->resource[idx].parent = &ioport_resource; else dev->resource[idx].parent = &iomem_resource; } /* Using the PROMs values for the PCI host bus, get the Linux * PCI host_pci_dev struct and set up host bus linkages */ bus_no = SN_PCIDEV_INFO(dev)->pdi_slot_host_handle >> 32; devfn = SN_PCIDEV_INFO(dev)->pdi_slot_host_handle & 0xffffffff; host_pci_bus = pci_find_bus(pci_domain_nr(dev->bus), bus_no); host_pci_dev = pci_get_slot(host_pci_bus, devfn); SN_PCIDEV_INFO(dev)->host_pci_dev = host_pci_dev; SN_PCIDEV_INFO(dev)->pdi_host_pcidev_info = SN_PCIDEV_INFO(host_pci_dev); SN_PCIDEV_INFO(dev)->pdi_linux_pcidev = dev; bs = SN_PCIBUS_BUSSOFT(dev->bus); SN_PCIDEV_INFO(dev)->pdi_pcibus_info = bs; if (bs && bs->bs_asic_type < PCIIO_ASIC_MAX_TYPES) { SN_PCIDEV_BUSPROVIDER(dev) = sn_pci_provider[bs->bs_asic_type]; } else { SN_PCIDEV_BUSPROVIDER(dev) = &sn_pci_default_provider; } /* Only set up IRQ stuff if this device has a host bus context */ if (bs && sn_irq_info->irq_irq) { SN_PCIDEV_INFO(dev)->pdi_sn_irq_info = sn_irq_info; dev->irq = SN_PCIDEV_INFO(dev)->pdi_sn_irq_info->irq_irq; sn_irq_fixup(dev, sn_irq_info); } else { SN_PCIDEV_INFO(dev)->pdi_sn_irq_info = NULL; kfree(sn_irq_info); } } /* * sn_pci_controller_fixup() - This routine sets up a bus's resources * consistent with the Linux PCI abstraction layer. */ static void sn_pci_controller_fixup(int segment, int busnum) { int status = 0; int nasid, cnode; struct pci_bus *bus; struct pci_controller *controller; struct pcibus_bussoft *prom_bussoft_ptr; struct hubdev_info *hubdev_info; void *provider_soft; struct sn_pcibus_provider *provider; status = sal_get_pcibus_info((u64) segment, (u64) busnum, (u64) ia64_tpa(&prom_bussoft_ptr)); if (status > 0) { return; /* bus # does not exist */ } prom_bussoft_ptr = __va(prom_bussoft_ptr); controller = sn_alloc_pci_sysdata(); /* controller non-zero is BUG'd in sn_alloc_pci_sysdata */ bus = pci_scan_bus(busnum, &pci_root_ops, controller); if (bus == NULL) { return; /* error, or bus already scanned */ } /* * Per-provider fixup. Copies the contents from prom to local * area and links SN_PCIBUS_BUSSOFT(). */ if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES) { return; /* unsupported asic type */ } provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type]; if (provider == NULL) { return; /* no provider registerd for this asic */ } provider_soft = NULL; if (provider->bus_fixup) { provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr); } if (provider_soft == NULL) { return; /* fixup failed or not applicable */ } /* * Generic bus fixup goes here. Don't reference prom_bussoft_ptr * after this point. */ bus->sysdata = controller; PCI_CONTROLLER(bus)->platform_data = provider_soft; nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base); cnode = nasid_to_cnodeid(nasid); hubdev_info = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo); SN_PCIBUS_BUSSOFT(bus)->bs_xwidget_info = &(hubdev_info->hdi_xwidget_info[SN_PCIBUS_BUSSOFT(bus)->bs_xid]); } /* * Ugly hack to get PCI setup until we have a proper ACPI namespace. */ #define PCI_BUSES_TO_SCAN 256 static int __init sn_pci_init(void) { int i = 0; struct pci_dev *pci_dev = NULL; extern void sn_init_cpei_timer(void); #ifdef CONFIG_PROC_FS extern void register_sn_procfs(void); #endif if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM()) return 0; /* * prime sn_pci_provider[]. Individial provider init routines will * override their respective default entries. */ for (i = 0; i < PCIIO_ASIC_MAX_TYPES; i++) sn_pci_provider[i] = &sn_pci_default_provider; pcibr_init_provider(); tioca_init_provider(); /* * This is needed to avoid bounce limit checks in the blk layer */ ia64_max_iommu_merge_mask = ~PAGE_MASK; sn_fixup_ionodes(); sn_irq_lh_init(); sn_init_cpei_timer(); #ifdef CONFIG_PROC_FS register_sn_procfs(); #endif for (i = 0; i < PCI_BUSES_TO_SCAN; i++) { sn_pci_controller_fixup(0, i); } /* * Generic Linux PCI Layer has created the pci_bus and pci_dev * structures - time for us to add our SN PLatform specific * information. */ while ((pci_dev = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) != NULL) { sn_pci_fixup_slot(pci_dev); } sn_ioif_inited = 1; /* sn I/O infrastructure now initialized */ return 0; } /* * hubdev_init_node() - Creates the HUB data structure and link them to it's * own NODE specific data area. */ void hubdev_init_node(nodepda_t * npda, cnodeid_t node) { struct hubdev_info *hubdev_info; if (node >= num_online_nodes()) /* Headless/memless IO nodes */ hubdev_info = (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(0), sizeof(struct hubdev_info)); else hubdev_info = (struct hubdev_info *)alloc_bootmem_node(NODE_DATA(node), sizeof(struct hubdev_info)); npda->pdinfo = (void *)hubdev_info; } geoid_t cnodeid_get_geoid(cnodeid_t cnode) { struct hubdev_info *hubdev; hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo); return hubdev->hdi_geoid; } subsys_initcall(sn_pci_init);