diff options
Diffstat (limited to 'arch/ia64/sn')
| -rw-r--r-- | arch/ia64/sn/kernel/huberror.c | 16 | ||||
| -rw-r--r-- | arch/ia64/sn/kernel/io_acpi_init.c | 317 | ||||
| -rw-r--r-- | arch/ia64/sn/kernel/io_common.c | 90 | ||||
| -rw-r--r-- | arch/ia64/sn/kernel/io_init.c | 54 | ||||
| -rw-r--r-- | arch/ia64/sn/kernel/iomv.c | 5 | ||||
| -rw-r--r-- | arch/ia64/sn/kernel/msi_sn.c | 20 | ||||
| -rw-r--r-- | arch/ia64/sn/kernel/setup.c | 12 | ||||
| -rw-r--r-- | arch/ia64/sn/kernel/sn2/sn_hwperf.c | 2 | ||||
| -rw-r--r-- | arch/ia64/sn/kernel/xpc_channel.c | 15 | ||||
| -rw-r--r-- | arch/ia64/sn/kernel/xpc_main.c | 64 | ||||
| -rw-r--r-- | arch/ia64/sn/pci/pcibr/pcibr_provider.c | 6 |
11 files changed, 464 insertions, 137 deletions
diff --git a/arch/ia64/sn/kernel/huberror.c b/arch/ia64/sn/kernel/huberror.c index abca6bd7962..fcf7f93c4b6 100644 --- a/arch/ia64/sn/kernel/huberror.c +++ b/arch/ia64/sn/kernel/huberror.c @@ -3,7 +3,7 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (C) 1992 - 1997, 2000,2002-2005 Silicon Graphics, Inc. All rights reserved. + * Copyright (C) 1992 - 1997, 2000,2002-2007 Silicon Graphics, Inc. All rights reserved. */ #include <linux/types.h> @@ -38,12 +38,20 @@ static irqreturn_t hub_eint_handler(int irq, void *arg) (u64) nasid, 0, 0, 0, 0, 0, 0); if ((int)ret_stuff.v0) - panic("hubii_eint_handler(): Fatal TIO Error"); + panic("%s: Fatal %s Error", __FUNCTION__, + ((nasid & 1) ? "TIO" : "HUBII")); if (!(nasid & 1)) /* Not a TIO, handle CRB errors */ (void)hubiio_crb_error_handler(hubdev_info); - } else - bte_error_handler((unsigned long)NODEPDA(nasid_to_cnodeid(nasid))); + } else + if (nasid & 1) { /* TIO errors */ + SAL_CALL_NOLOCK(ret_stuff, SN_SAL_HUB_ERROR_INTERRUPT, + (u64) nasid, 0, 0, 0, 0, 0, 0); + + if ((int)ret_stuff.v0) + panic("%s: Fatal TIO Error", __FUNCTION__); + } else + bte_error_handler((unsigned long)NODEPDA(nasid_to_cnodeid(nasid))); return IRQ_HANDLED; } diff --git a/arch/ia64/sn/kernel/io_acpi_init.c b/arch/ia64/sn/kernel/io_acpi_init.c index 99d7f278612..8c331ca6e5c 100644 --- a/arch/ia64/sn/kernel/io_acpi_init.c +++ b/arch/ia64/sn/kernel/io_acpi_init.c @@ -13,6 +13,7 @@ #include <asm/sn/sn_sal.h> #include "xtalk/hubdev.h" #include <linux/acpi.h> +#include <acpi/acnamesp.h> /* @@ -31,6 +32,12 @@ struct acpi_vendor_uuid sn_uuid = { 0xa2, 0x7c, 0x08, 0x00, 0x69, 0x13, 0xea, 0x51 }, }; +struct sn_pcidev_match { + u8 bus; + unsigned int devfn; + acpi_handle handle; +}; + /* * Perform the early IO init in PROM. */ @@ -119,9 +126,11 @@ sn_get_bussoft_ptr(struct pci_bus *bus) status = acpi_get_vendor_resource(handle, METHOD_NAME__CRS, &sn_uuid, &buffer); if (ACPI_FAILURE(status)) { - printk(KERN_ERR "get_acpi_pcibus_ptr: " - "get_acpi_bussoft_info() failed: %d\n", - status); + printk(KERN_ERR "%s: " + "acpi_get_vendor_resource() failed (0x%x) for: ", + __FUNCTION__, status); + acpi_ns_print_node_pathname(handle, NULL); + printk("\n"); return NULL; } resource = buffer.pointer; @@ -130,8 +139,8 @@ sn_get_bussoft_ptr(struct pci_bus *bus) if ((vendor->byte_length - sizeof(struct acpi_vendor_uuid)) != sizeof(struct pcibus_bussoft *)) { printk(KERN_ERR - "get_acpi_bussoft_ptr: Invalid vendor data " - "length %d\n", vendor->byte_length); + "%s: Invalid vendor data length %d\n", + __FUNCTION__, vendor->byte_length); kfree(buffer.pointer); return NULL; } @@ -143,34 +152,254 @@ sn_get_bussoft_ptr(struct pci_bus *bus) } /* - * sn_acpi_bus_fixup + * sn_extract_device_info - Extract the pcidev_info and the sn_irq_info + * pointers from the vendor resource using the + * provided acpi handle, and copy the structures + * into the argument buffers. */ -void -sn_acpi_bus_fixup(struct pci_bus *bus) +static int +sn_extract_device_info(acpi_handle handle, struct pcidev_info **pcidev_info, + struct sn_irq_info **sn_irq_info) { - struct pci_dev *pci_dev = NULL; - struct pcibus_bussoft *prom_bussoft_ptr; - extern void sn_common_bus_fixup(struct pci_bus *, - struct pcibus_bussoft *); + u64 addr; + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; + struct sn_irq_info *irq_info, *irq_info_prom; + struct pcidev_info *pcidev_ptr, *pcidev_prom_ptr; + struct acpi_resource *resource; + int ret = 0; + acpi_status status; + struct acpi_resource_vendor_typed *vendor; - if (!bus->parent) { /* If root bus */ - prom_bussoft_ptr = sn_get_bussoft_ptr(bus); - if (prom_bussoft_ptr == NULL) { + /* + * The pointer to this device's pcidev_info structure in + * the PROM, is in the vendor resource. + */ + status = acpi_get_vendor_resource(handle, METHOD_NAME__CRS, + &sn_uuid, &buffer); + if (ACPI_FAILURE(status)) { + printk(KERN_ERR + "%s: acpi_get_vendor_resource() failed (0x%x) for: ", + __FUNCTION__, status); + acpi_ns_print_node_pathname(handle, NULL); + printk("\n"); + return 1; + } + + resource = buffer.pointer; + vendor = &resource->data.vendor_typed; + if ((vendor->byte_length - sizeof(struct acpi_vendor_uuid)) != + sizeof(struct pci_devdev_info *)) { + printk(KERN_ERR + "%s: Invalid vendor data length: %d for: ", + __FUNCTION__, vendor->byte_length); + acpi_ns_print_node_pathname(handle, NULL); + printk("\n"); + ret = 1; + goto exit; + } + + pcidev_ptr = kzalloc(sizeof(struct pcidev_info), GFP_KERNEL); + if (!pcidev_ptr) + panic("%s: Unable to alloc memory for pcidev_info", __FUNCTION__); + + memcpy(&addr, vendor->byte_data, sizeof(struct pcidev_info *)); + pcidev_prom_ptr = __va(addr); + memcpy(pcidev_ptr, pcidev_prom_ptr, sizeof(struct pcidev_info)); + + /* Get the IRQ info */ + irq_info = kzalloc(sizeof(struct sn_irq_info), GFP_KERNEL); + if (!irq_info) + panic("%s: Unable to alloc memory for sn_irq_info", __FUNCTION__); + + if (pcidev_ptr->pdi_sn_irq_info) { + irq_info_prom = __va(pcidev_ptr->pdi_sn_irq_info); + memcpy(irq_info, irq_info_prom, sizeof(struct sn_irq_info)); + } + + *pcidev_info = pcidev_ptr; + *sn_irq_info = irq_info; + +exit: + kfree(buffer.pointer); + return ret; +} + +static unsigned int +get_host_devfn(acpi_handle device_handle, acpi_handle rootbus_handle) +{ + unsigned long adr; + acpi_handle child; + unsigned int devfn; + int function; + acpi_handle parent; + int slot; + acpi_status status; + + /* + * Do an upward search to find the root bus device, and + * obtain the host devfn from the previous child device. + */ + child = device_handle; + while (child) { + status = acpi_get_parent(child, &parent); + if (ACPI_FAILURE(status)) { + printk(KERN_ERR "%s: acpi_get_parent() failed " + "(0x%x) for: ", __FUNCTION__, status); + acpi_ns_print_node_pathname(child, NULL); + printk("\n"); + panic("%s: Unable to find host devfn\n", __FUNCTION__); + } + if (parent == rootbus_handle) + break; + child = parent; + } + if (!child) { + printk(KERN_ERR "%s: Unable to find root bus for: ", + __FUNCTION__); + acpi_ns_print_node_pathname(device_handle, NULL); + printk("\n"); + BUG(); + } + + status = acpi_evaluate_integer(child, METHOD_NAME__ADR, NULL, &adr); + if (ACPI_FAILURE(status)) { + printk(KERN_ERR "%s: Unable to get _ADR (0x%x) for: ", + __FUNCTION__, status); + acpi_ns_print_node_pathname(child, NULL); + printk("\n"); + panic("%s: Unable to find host devfn\n", __FUNCTION__); + } + + slot = (adr >> 16) & 0xffff; + function = adr & 0xffff; + devfn = PCI_DEVFN(slot, function); + return devfn; +} + +/* + * find_matching_device - Callback routine to find the ACPI device + * that matches up with our pci_dev device. + * Matching is done on bus number and devfn. + * To find the bus number for a particular + * ACPI device, we must look at the _BBN method + * of its parent. + */ +static acpi_status +find_matching_device(acpi_handle handle, u32 lvl, void *context, void **rv) +{ + unsigned long bbn = -1; + unsigned long adr; + acpi_handle parent = NULL; + acpi_status status; + unsigned int devfn; + int function; + int slot; + struct sn_pcidev_match *info = context; + + status = acpi_evaluate_integer(handle, METHOD_NAME__ADR, NULL, + &adr); + if (ACPI_SUCCESS(status)) { + status = acpi_get_parent(handle, &parent); + if (ACPI_FAILURE(status)) { printk(KERN_ERR - "sn_pci_fixup_bus: 0x%04x:0x%02x Unable to " - "obtain prom_bussoft_ptr\n", - pci_domain_nr(bus), bus->number); - return; + "%s: acpi_get_parent() failed (0x%x) for: ", + __FUNCTION__, status); + acpi_ns_print_node_pathname(handle, NULL); + printk("\n"); + return AE_OK; + } + status = acpi_evaluate_integer(parent, METHOD_NAME__BBN, + NULL, &bbn); + if (ACPI_FAILURE(status)) { + printk(KERN_ERR + "%s: Failed to find _BBN in parent of: ", + __FUNCTION__); + acpi_ns_print_node_pathname(handle, NULL); + printk("\n"); + return AE_OK; + } + + slot = (adr >> 16) & 0xffff; + function = adr & 0xffff; + devfn = PCI_DEVFN(slot, function); + if ((info->devfn == devfn) && (info->bus == bbn)) { + /* We have a match! */ + info->handle = handle; + return 1; } - sn_common_bus_fixup(bus, prom_bussoft_ptr); } - list_for_each_entry(pci_dev, &bus->devices, bus_list) { - sn_pci_fixup_slot(pci_dev); + return AE_OK; +} + +/* + * sn_acpi_get_pcidev_info - Search ACPI namespace for the acpi + * device matching the specified pci_dev, + * and return the pcidev info and irq info. + */ +int +sn_acpi_get_pcidev_info(struct pci_dev *dev, struct pcidev_info **pcidev_info, + struct sn_irq_info **sn_irq_info) +{ + unsigned int host_devfn; + struct sn_pcidev_match pcidev_match; + acpi_handle rootbus_handle; + unsigned long segment; + acpi_status status; + + rootbus_handle = PCI_CONTROLLER(dev)->acpi_handle; + status = acpi_evaluate_integer(rootbus_handle, METHOD_NAME__SEG, NULL, + &segment); + if (ACPI_SUCCESS(status)) { + if (segment != pci_domain_nr(dev)) { + printk(KERN_ERR + "%s: Segment number mismatch, 0x%lx vs 0x%x for: ", + __FUNCTION__, segment, pci_domain_nr(dev)); + acpi_ns_print_node_pathname(rootbus_handle, NULL); + printk("\n"); + return 1; + } + } else { + printk(KERN_ERR "%s: Unable to get __SEG from: ", + __FUNCTION__); + acpi_ns_print_node_pathname(rootbus_handle, NULL); + printk("\n"); + return 1; } + + /* + * We want to search all devices in this segment/domain + * of the ACPI namespace for the matching ACPI device, + * which holds the pcidev_info pointer in its vendor resource. + */ + pcidev_match.bus = dev->bus->number; + pcidev_match.devfn = dev->devfn; + pcidev_match.handle = NULL; + + acpi_walk_namespace(ACPI_TYPE_DEVICE, rootbus_handle, ACPI_UINT32_MAX, + find_matching_device, &pcidev_match, NULL); + + if (!pcidev_match.handle) { + printk(KERN_ERR + "%s: Could not find matching ACPI device for %s.\n", + __FUNCTION__, pci_name(dev)); + return 1; + } + + if (sn_extract_device_info(pcidev_match.handle, pcidev_info, sn_irq_info)) + return 1; + + /* Build up the pcidev_info.pdi_slot_host_handle */ + host_devfn = get_host_devfn(pcidev_match.handle, rootbus_handle); + (*pcidev_info)->pdi_slot_host_handle = + ((unsigned long) pci_domain_nr(dev) << 40) | + /* bus == 0 */ + host_devfn; + return 0; } /* - * sn_acpi_slot_fixup - Perform any SN specific slot fixup. + * sn_acpi_slot_fixup - Obtain the pcidev_info and sn_irq_info. + * Perform any SN specific slot fixup. * At present there does not appear to be * any generic way to handle a ROM image * that has been shadowed by the PROM, so @@ -179,11 +408,18 @@ sn_acpi_bus_fixup(struct pci_bus *bus) */ void -sn_acpi_slot_fixup(struct pci_dev *dev, struct pcidev_info *pcidev_info) +sn_acpi_slot_fixup(struct pci_dev *dev) { void __iomem *addr; + struct pcidev_info *pcidev_info = NULL; + struct sn_irq_info *sn_irq_info = NULL; size_t size; + if (sn_acpi_get_pcidev_info(dev, &pcidev_info, &sn_irq_info)) { + panic("%s: Failure obtaining pcidev_info for %s\n", + __FUNCTION__, pci_name(dev)); + } + if (pcidev_info->pdi_pio_mapped_addr[PCI_ROM_RESOURCE]) { /* * A valid ROM image exists and has been shadowed by the @@ -200,8 +436,11 @@ sn_acpi_slot_fixup(struct pci_dev *dev, struct pcidev_info *pcidev_info) (unsigned long) addr + size; dev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_BIOS_COPY; } + sn_pci_fixup_slot(dev, pcidev_info, sn_irq_info); } +EXPORT_SYMBOL(sn_acpi_slot_fixup); + static struct acpi_driver acpi_sn_hubdev_driver = { .name = "SGI HUBDEV Driver", .ids = "SGIHUB,SGITIO", @@ -212,6 +451,33 @@ static struct acpi_driver acpi_sn_hubdev_driver = { /* + * sn_acpi_bus_fixup - Perform SN specific setup of software structs + * (pcibus_bussoft, pcidev_info) and hardware + * registers, for the specified bus and devices under it. + */ +void +sn_acpi_bus_fixup(struct pci_bus *bus) +{ + struct pci_dev *pci_dev = NULL; + struct pcibus_bussoft *prom_bussoft_ptr; + + if (!bus->parent) { /* If root bus */ + prom_bussoft_ptr = sn_get_bussoft_ptr(bus); + if (prom_bussoft_ptr == NULL) { + printk(KERN_ERR + "%s: 0x%04x:0x%02x Unable to " + "obtain prom_bussoft_ptr\n", + __FUNCTION__, pci_domain_nr(bus), bus->number); + return; + } + sn_common_bus_fixup(bus, prom_bussoft_ptr); + } + list_for_each_entry(pci_dev, &bus->devices, bus_list) { + sn_acpi_slot_fixup(pci_dev); + } +} + +/* * sn_io_acpi_init - PROM has ACPI support for IO, defining at a minimum the * nodes and root buses in the DSDT. As a result, bus scanning * will be initiated by the Linux ACPI code. @@ -223,6 +489,9 @@ sn_io_acpi_init(void) u64 result; s64 status; + /* SN Altix does not follow the IOSAPIC IRQ routing model */ + acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM; + acpi_bus_register_driver(&acpi_sn_hubdev_driver); status = sal_ioif_init(&result); if (status || result) diff --git a/arch/ia64/sn/kernel/io_common.c b/arch/ia64/sn/kernel/io_common.c index d4dd8f4b6b8..d48bcd83253 100644 --- a/arch/ia64/sn/kernel/io_common.c +++ b/arch/ia64/sn/kernel/io_common.c @@ -26,14 +26,10 @@ #include <linux/acpi.h> #include <asm/sn/sn2/sn_hwperf.h> #include <asm/sn/acpi.h> +#include "acpi/acglobal.h" extern void sn_init_cpei_timer(void); extern void register_sn_procfs(void); -extern void sn_acpi_bus_fixup(struct pci_bus *); -extern void sn_bus_fixup(struct pci_bus *); -extern void sn_acpi_slot_fixup(struct pci_dev *, struct pcidev_info *); -extern void sn_more_slot_fixup(struct pci_dev *, struct pcidev_info *); -extern void sn_legacy_pci_window_fixup(struct pci_controller *, u64, u64); extern void sn_io_acpi_init(void); extern void sn_io_init(void); @@ -48,6 +44,9 @@ struct sysdata_el { int sn_ioif_inited; /* SN I/O infrastructure initialized? */ +int sn_acpi_rev; /* SN ACPI revision */ +EXPORT_SYMBOL_GPL(sn_acpi_rev); + struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES]; /* indexed by asic type */ /* @@ -99,25 +98,6 @@ sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num, } /* - * Retrieve the pci device information given the bus and device|function number. - */ -static inline u64 -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_pcidev_info_get() - Retrieve the pcidev_info struct for the specified * device. */ @@ -249,50 +229,25 @@ void sn_pci_unfixup_slot(struct pci_dev *dev) } /* - * 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. + * sn_pci_fixup_slot() */ -void sn_pci_fixup_slot(struct pci_dev *dev) +void sn_pci_fixup_slot(struct pci_dev *dev, struct pcidev_info *pcidev_info, + struct sn_irq_info *sn_irq_info) { int segment = pci_domain_nr(dev->bus); - int status = 0; struct pcibus_bussoft *bs; - struct pci_bus *host_pci_bus; - struct pci_dev *host_pci_dev; - struct pcidev_info *pcidev_info; - struct sn_irq_info *sn_irq_info; - unsigned int bus_no, devfn; + struct pci_bus *host_pci_bus; + struct pci_dev *host_pci_dev; + unsigned int bus_no, devfn; pci_dev_get(dev); /* for the sysdata pointer */ - pcidev_info = kzalloc(sizeof(struct pcidev_info), GFP_KERNEL); - if (!pcidev_info) - BUG(); /* Cannot afford to run out of memory */ - - sn_irq_info = kzalloc(sizeof(struct sn_irq_info), GFP_KERNEL); - if (!sn_irq_info) - BUG(); /* Cannot afford to run out of memory */ - - /* Call to retrieve pci device information needed by kernel. */ - status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number, - dev->devfn, - (u64) __pa(pcidev_info), - (u64) __pa(sn_irq_info)); - if (status) - BUG(); /* Cannot get platform pci device information */ /* Add pcidev_info to list in pci_controller.platform_data */ list_add_tail(&pcidev_info->pdi_list, &(SN_PLATFORM_DATA(dev->bus)->pcidev_info)); - - if (SN_ACPI_BASE_SUPPORT()) - sn_acpi_slot_fixup(dev, pcidev_info); - else - sn_more_slot_fixup(dev, pcidev_info); /* * Using the PROMs values for the PCI host bus, get the Linux - * PCI host_pci_dev struct and set up host bus linkages + * PCI host_pci_dev struct and set up host bus linkages */ bus_no = (pcidev_info->pdi_slot_host_handle >> 32) & 0xff; @@ -489,11 +444,6 @@ void sn_generate_path(struct pci_bus *pci_bus, char *address) sprintf(address, "%s^%d", address, geo_slot(geoid)); } -/* - * sn_pci_fixup_bus() - Perform SN specific setup of software structs - * (pcibus_bussoft, pcidev_info) and hardware - * registers, for the specified bus and devices under it. - */ void __devinit sn_pci_fixup_bus(struct pci_bus *bus) { @@ -519,6 +469,15 @@ sn_io_early_init(void) if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM()) return 0; + /* we set the acpi revision to that of the DSDT table OEM rev. */ + { + struct acpi_table_header *header = NULL; + + acpi_get_table_by_index(ACPI_TABLE_INDEX_DSDT, &header); + BUG_ON(header == NULL); + sn_acpi_rev = header->oem_revision; + } + /* * prime sn_pci_provider[]. Individial provider init routines will * override their respective default entries. @@ -544,8 +503,12 @@ sn_io_early_init(void) register_sn_procfs(); #endif - printk(KERN_INFO "ACPI DSDT OEM Rev 0x%x\n", - acpi_gbl_DSDT->oem_revision); + { + struct acpi_table_header *header; + (void)acpi_get_table_by_index(ACPI_TABLE_INDEX_DSDT, &header); + printk(KERN_INFO "ACPI DSDT OEM Rev 0x%x\n", + header->oem_revision); + } if (SN_ACPI_BASE_SUPPORT()) sn_io_acpi_init(); else @@ -605,7 +568,6 @@ sn_io_late_init(void) fs_initcall(sn_io_late_init); -EXPORT_SYMBOL(sn_pci_fixup_slot); EXPORT_SYMBOL(sn_pci_unfixup_slot); EXPORT_SYMBOL(sn_bus_store_sysdata); EXPORT_SYMBOL(sn_bus_free_sysdata); diff --git a/arch/ia64/sn/kernel/io_init.c b/arch/ia64/sn/kernel/io_init.c index 9ad843e0383..600be3ebae0 100644 --- a/arch/ia64/sn/kernel/io_init.c +++ b/arch/ia64/sn/kernel/io_init.c @@ -56,6 +56,25 @@ static inline u64 sal_get_pcibus_info(u64 segment, u64 busnum, u64 address) return ret_stuff.v0; } +/* + * Retrieve the pci device information given the bus and device|function number. + */ +static inline u64 +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_fixup_ionodes() - This routine initializes the HUB data structure for @@ -172,18 +191,40 @@ sn_pci_window_fixup(struct pci_dev *dev, unsigned int count, } /* - * sn_more_slot_fixup() - We are not running with an ACPI capable PROM, + * sn_io_slot_fixup() - We are not running with an ACPI capable PROM, * and need to convert the pci_dev->resource * 'start' and 'end' addresses to mapped addresses, * and setup the pci_controller->window array entries. */ void -sn_more_slot_fixup(struct pci_dev *dev, struct pcidev_info *pcidev_info) +sn_io_slot_fixup(struct pci_dev *dev) { unsigned int count = 0; int idx; s64 pci_addrs[PCI_ROM_RESOURCE + 1]; unsigned long addr, end, size, start; + struct pcidev_info *pcidev_info; + struct sn_irq_info *sn_irq_info; + int status; + + pcidev_info = kzalloc(sizeof(struct pcidev_info), GFP_KERNEL); + if (!pcidev_info) + panic("%s: Unable to alloc memory for pcidev_info", __FUNCTION__); + + sn_irq_info = kzalloc(sizeof(struct sn_irq_info), GFP_KERNEL); + if (!sn_irq_info) + panic("%s: Unable to alloc memory for sn_irq_info", __FUNCTION__); + + /* Call to retrieve pci device information needed by kernel. */ + status = sal_get_pcidev_info((u64) pci_domain_nr(dev), + (u64) dev->bus->number, + dev->devfn, + (u64) __pa(pcidev_info), + (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++) { @@ -219,8 +260,12 @@ sn_more_slot_fixup(struct pci_dev *dev, struct pcidev_info *pcidev_info) */ if (count > 0) sn_pci_window_fixup(dev, count, pci_addrs); + + sn_pci_fixup_slot(dev, pcidev_info, sn_irq_info); } +EXPORT_SYMBOL(sn_io_slot_fixup); + /* * sn_pci_controller_fixup() - This routine sets up a bus's resources * consistent with the Linux PCI abstraction layer. @@ -272,9 +317,6 @@ sn_bus_fixup(struct pci_bus *bus) { struct pci_dev *pci_dev = NULL; struct pcibus_bussoft *prom_bussoft_ptr; - extern void sn_common_bus_fixup(struct pci_bus *, - struct pcibus_bussoft *); - if (!bus->parent) { /* If root bus */ prom_bussoft_ptr = PCI_CONTROLLER(bus)->platform_data; @@ -291,7 +333,7 @@ sn_bus_fixup(struct pci_bus *bus) prom_bussoft_ptr->bs_legacy_mem); } list_for_each_entry(pci_dev, &bus->devices, bus_list) { - sn_pci_fixup_slot(pci_dev); + sn_io_slot_fixup(pci_dev); } } diff --git a/arch/ia64/sn/kernel/iomv.c b/arch/ia64/sn/kernel/iomv.c index 4aa4f301d56..ab7e2fd4079 100644 --- a/arch/ia64/sn/kernel/iomv.c +++ b/arch/ia64/sn/kernel/iomv.c @@ -1,4 +1,4 @@ -/* +/* * 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. @@ -26,9 +26,10 @@ * @port: port to convert * * Legacy in/out instructions are converted to ld/st instructions - * on IA64. This routine will convert a port number into a valid + * on IA64. This routine will convert a port number into a valid * SN i/o address. Used by sn_in*() and sn_out*(). */ + void *sn_io_addr(unsigned long port) { if (!IS_RUNNING_ON_SIMULATOR()) { diff --git a/arch/ia64/sn/kernel/msi_sn.c b/arch/ia64/sn/kernel/msi_sn.c index b3a435fd70f..ea3dc38d73f 100644 --- a/arch/ia64/sn/kernel/msi_sn.c +++ b/arch/ia64/sn/kernel/msi_sn.c @@ -59,13 +59,12 @@ void sn_teardown_msi_irq(unsigned int irq) sn_intr_free(nasid, widget, sn_irq_info); sn_msi_info[irq].sn_irq_info = NULL; - return; + destroy_irq(irq); } -int sn_setup_msi_irq(unsigned int irq, struct pci_dev *pdev) +int sn_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *entry) { struct msi_msg msg; - struct msi_desc *entry; int widget; int status; nasid_t nasid; @@ -73,8 +72,8 @@ int sn_setup_msi_irq(unsigned int irq, struct pci_dev *pdev) struct sn_irq_info *sn_irq_info; struct pcibus_bussoft *bussoft = SN_PCIDEV_BUSSOFT(pdev); struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev); + int irq; - entry = get_irq_data(irq); if (!entry->msi_attrib.is_64) return -EINVAL; @@ -84,6 +83,11 @@ int sn_setup_msi_irq(unsigned int irq, struct pci_dev *pdev) if (provider == NULL || provider->dma_map_consistent == NULL) return -EINVAL; + irq = create_irq(); + if (irq < 0) + return irq; + + set_irq_msi(irq, entry); /* * Set up the vector plumbing. Let the prom (via sn_intr_alloc) * decide which cpu to direct this msi at by default. @@ -95,12 +99,15 @@ int sn_setup_msi_irq(unsigned int irq, struct pci_dev *pdev) SWIN_WIDGETNUM(bussoft->bs_base); sn_irq_info = kzalloc(sizeof(struct sn_irq_info), GFP_KERNEL); - if (! sn_irq_info) + if (! sn_irq_info) { + destroy_irq(irq); return -ENOMEM; + } status = sn_intr_alloc(nasid, widget, sn_irq_info, irq, -1, -1); if (status) { kfree(sn_irq_info); + destroy_irq(irq); return -ENOMEM; } @@ -121,6 +128,7 @@ int sn_setup_msi_irq(unsigned int irq, struct pci_dev *pdev) if (! bus_addr) { sn_intr_free(nasid, widget, sn_irq_info); kfree(sn_irq_info); + destroy_irq(irq); return -ENOMEM; } @@ -139,7 +147,7 @@ int sn_setup_msi_irq(unsigned int irq, struct pci_dev *pdev) write_msi_msg(irq, &msg); set_irq_chip_and_handler(irq, &sn_msi_chip, handle_edge_irq); - return 0; + return irq; } #ifdef CONFIG_SMP diff --git a/arch/ia64/sn/kernel/setup.c b/arch/ia64/sn/kernel/setup.c index a934ad06942..8571e52c2ef 100644 --- a/arch/ia64/sn/kernel/setup.c +++ b/arch/ia64/sn/kernel/setup.c @@ -580,7 +580,7 @@ void __cpuinit sn_cpu_init(void) int slice; int cnode; int i; - static int wars_have_been_checked; + static int wars_have_been_checked, set_cpu0_number; cpuid = smp_processor_id(); if (cpuid == 0 && IS_MEDUSA()) { @@ -605,8 +605,16 @@ void __cpuinit sn_cpu_init(void) /* * Don't check status. The SAL call is not supported on all PROMs * but a failure is harmless. + * Architechtuallly, cpu_init is always called twice on cpu 0. We + * should set cpu_number on cpu 0 once. */ - (void) ia64_sn_set_cpu_number(cpuid); + if (cpuid == 0) { + if (!set_cpu0_number) { + (void) ia64_sn_set_cpu_number(cpuid); + set_cpu0_number = 1; + } + } else + (void) ia64_sn_set_cpu_number(cpuid); /* * The boot cpu makes this call again after platform initialization is diff --git a/arch/ia64/sn/kernel/sn2/sn_hwperf.c b/arch/ia64/sn/kernel/sn2/sn_hwperf.c index 462ea178f49..33367996d72 100644 --- a/arch/ia64/sn/kernel/sn2/sn_hwperf.c +++ b/arch/ia64/sn/kernel/sn2/sn_hwperf.c @@ -189,7 +189,7 @@ static void print_pci_topology(struct seq_file *s) int e; for (sz = PAGE_SIZE; sz < 16 * PAGE_SIZE; sz += PAGE_SIZE) { - if (!(p = (char *)kmalloc(sz, GFP_KERNEL))) + if (!(p = kmalloc(sz, GFP_KERNEL))) break; e = ia64_sn_ioif_get_pci_topology(__pa(p), sz); if (e == SALRET_OK) diff --git a/arch/ia64/sn/kernel/xpc_channel.c b/arch/ia64/sn/kernel/xpc_channel.c index 1f3540826e6..c08db9c2375 100644 --- a/arch/ia64/sn/kernel/xpc_channel.c +++ b/arch/ia64/sn/kernel/xpc_channel.c @@ -632,7 +632,7 @@ xpc_process_connect(struct xpc_channel *ch, unsigned long *irq_flags) ch->number, ch->partid); spin_unlock_irqrestore(&ch->lock, *irq_flags); - xpc_create_kthreads(ch, 1); + xpc_create_kthreads(ch, 1, 0); spin_lock_irqsave(&ch->lock, *irq_flags); } @@ -754,12 +754,12 @@ xpc_process_disconnect(struct xpc_channel *ch, unsigned long *irq_flags) /* make sure all activity has settled down first */ - if (atomic_read(&ch->references) > 0 || - ((ch->flags & XPC_C_CONNECTEDCALLOUT_MADE) && - !(ch->flags & XPC_C_DISCONNECTINGCALLOUT_MADE))) { + if (atomic_read(&ch->kthreads_assigned) > 0 || + atomic_read(&ch->references) > 0) { return; } - DBUG_ON(atomic_read(&ch->kthreads_assigned) != 0); + DBUG_ON((ch->flags & XPC_C_CONNECTEDCALLOUT_MADE) && + !(ch->flags & XPC_C_DISCONNECTINGCALLOUT_MADE)); if (part->act_state == XPC_P_DEACTIVATING) { /* can't proceed until the other side disengages from us */ @@ -1651,6 +1651,11 @@ xpc_disconnect_channel(const int line, struct xpc_channel *ch, /* wake all idle kthreads so they can exit */ if (atomic_read(&ch->kthreads_idle) > 0) { wake_up_all(&ch->idle_wq); + + } else if ((ch->flags & XPC_C_CONNECTEDCALLOUT_MADE) && + !(ch->flags & XPC_C_DISCONNECTINGCALLOUT)) { + /* start a kthread that will do the xpcDisconnecting callout */ + xpc_create_kthreads(ch, 1, 1); } /* wake those waiting to allocate an entry from the local msg queue */ diff --git a/arch/ia64/sn/kernel/xpc_main.c b/arch/ia64/sn/kernel/xpc_main.c index fa96dfc0e1a..7a387d23736 100644 --- a/arch/ia64/sn/kernel/xpc_main.c +++ b/arch/ia64/sn/kernel/xpc_main.c @@ -681,7 +681,7 @@ xpc_activate_kthreads(struct xpc_channel *ch, int needed) dev_dbg(xpc_chan, "create %d new kthreads, partid=%d, channel=%d\n", needed, ch->partid, ch->number); - xpc_create_kthreads(ch, needed); + xpc_create_kthreads(ch, needed, 0); } @@ -775,26 +775,28 @@ xpc_daemonize_kthread(void *args) xpc_kthread_waitmsgs(part, ch); } - if (atomic_dec_return(&ch->kthreads_assigned) == 0) { - spin_lock_irqsave(&ch->lock, irq_flags); - if ((ch->flags & XPC_C_CONNECTEDCALLOUT_MADE) && - !(ch->flags & XPC_C_DISCONNECTINGCALLOUT)) { - ch->flags |= XPC_C_DISCONNECTINGCALLOUT; - spin_unlock_irqrestore(&ch->lock, irq_flags); + /* let registerer know that connection is disconnecting */ - xpc_disconnect_callout(ch, xpcDisconnecting); - - spin_lock_irqsave(&ch->lock, irq_flags); - ch->flags |= XPC_C_DISCONNECTINGCALLOUT_MADE; - } + spin_lock_irqsave(&ch->lock, irq_flags); + if ((ch->flags & XPC_C_CONNECTEDCALLOUT_MADE) && + !(ch->flags & XPC_C_DISCONNECTINGCALLOUT)) { + ch->flags |= XPC_C_DISCONNECTINGCALLOUT; spin_unlock_irqrestore(&ch->lock, irq_flags); + + xpc_disconnect_callout(ch, xpcDisconnecting); + + spin_lock_irqsave(&ch->lock, irq_flags); + ch->flags |= XPC_C_DISCONNECTINGCALLOUT_MADE; + } + spin_unlock_irqrestore(&ch->lock, irq_flags); + + if (atomic_dec_return(&ch->kthreads_assigned) == 0) { if (atomic_dec_return(&part->nchannels_engaged) == 0) { xpc_mark_partition_disengaged(part); xpc_IPI_send_disengage(part); } } - xpc_msgqueue_deref(ch); dev_dbg(xpc_chan, "kthread exiting, partid=%d, channel=%d\n", @@ -818,7 +820,8 @@ xpc_daemonize_kthread(void *args) * partition. */ void -xpc_create_kthreads(struct xpc_channel *ch, int needed) +xpc_create_kthreads(struct xpc_channel *ch, int needed, + int ignore_disconnecting) { unsigned long irq_flags; pid_t pid; @@ -833,16 +836,38 @@ xpc_create_kthreads(struct xpc_channel *ch, int needed) * kthread. That kthread is responsible for doing the * counterpart to the following before it exits. */ + if (ignore_disconnecting) { + if (!atomic_inc_not_zero(&ch->kthreads_assigned)) { + /* kthreads assigned had gone to zero */ + BUG_ON(!(ch->flags & + XPC_C_DISCONNECTINGCALLOUT_MADE)); + break; + } + + } else if (ch->flags & XPC_C_DISCONNECTING) { + break; + + } else if (atomic_inc_return(&ch->kthreads_assigned) == 1) { + if (atomic_inc_return(&part->nchannels_engaged) == 1) + xpc_mark_partition_engaged(part); + } (void) xpc_part_ref(part); xpc_msgqueue_ref(ch); - if (atomic_inc_return(&ch->kthreads_assigned) == 1 && - atomic_inc_return(&part->nchannels_engaged) == 1) { - xpc_mark_partition_engaged(part); - } pid = kernel_thread(xpc_daemonize_kthread, (void *) args, 0); if (pid < 0) { /* the fork failed */ + + /* + * NOTE: if (ignore_disconnecting && + * !(ch->flags & XPC_C_DISCONNECTINGCALLOUT)) is true, + * then we'll deadlock if all other kthreads assigned + * to this channel are blocked in the channel's + * registerer, because the only thing that will unblock + * them is the xpcDisconnecting callout that this + * failed kernel_thread would have made. + */ + if (atomic_dec_return(&ch->kthreads_assigned) == 0 && atomic_dec_return(&part->nchannels_engaged) == 0) { xpc_mark_partition_disengaged(part); @@ -857,9 +882,6 @@ xpc_create_kthreads(struct xpc_channel *ch, int needed) * Flag this as an error only if we have an * insufficient #of kthreads for the channel * to function. - * - * No xpc_msgqueue_ref() is needed here since - * the channel mgr is doing this. */ spin_lock_irqsave(&ch->lock, irq_flags); XPC_DISCONNECT_CHANNEL(ch, xpcLackOfResources, diff --git a/arch/ia64/sn/pci/pcibr/pcibr_provider.c b/arch/ia64/sn/pci/pcibr/pcibr_provider.c index 6846dc9b432..04a8256017e 100644 --- a/arch/ia64/sn/pci/pcibr/pcibr_provider.c +++ b/arch/ia64/sn/pci/pcibr/pcibr_provider.c @@ -20,7 +20,8 @@ #include "xtalk/hubdev.h" int -sal_pcibr_slot_enable(struct pcibus_info *soft, int device, void *resp) +sal_pcibr_slot_enable(struct pcibus_info *soft, int device, void *resp, + char **ssdt) { struct ia64_sal_retval ret_stuff; u64 busnum; @@ -32,7 +33,8 @@ sal_pcibr_slot_enable(struct pcibus_info *soft, int device, void *resp) segment = soft->pbi_buscommon.bs_persist_segment; busnum = soft->pbi_buscommon.bs_persist_busnum; SAL_CALL_NOLOCK(ret_stuff, (u64) SN_SAL_IOIF_SLOT_ENABLE, segment, - busnum, (u64) device, (u64) resp, 0, 0, 0); + busnum, (u64) device, (u64) resp, (u64)ia64_tpa(ssdt), + 0, 0); return (int)ret_stuff.v0; } |