litmus-rt.git - The LITMUS^RT kernel.

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author	Linus Torvalds <torvalds@linux-foundation.org>	2015-01-14 16:50:29 -0500
committer	Linus Torvalds <torvalds@linux-foundation.org>	2015-01-14 16:50:29 -0500
commit	6fb400d36de0926309c8059ad81b0091593c2931 (patch)
tree	05f3a9cbe10e4142e45c705bd4ff736e4c3f4890 /lib/memory-notifier-error-inject.c
parent	fb005c47f7b72edac50342b6af490af09854381b (diff)
parent	8d1a2427d8fc0cb26ee72dfad7ad1033420089a1 (diff)

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 fixes from Martin Schwidefsky: "Two small performance tweaks, the plumbing for the execveat system call and a couple of bug fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/uprobes: fix user space PER events s390/bpf: Fix JMP_JGE_X (A > X) and JMP_JGT_X (A >= X) s390/bpf: Fix ALU_NEG (A = -A) s390/mm: avoid using pmd_to_page for !USE_SPLIT_PMD_PTLOCKS s390/timex: fix get_tod_clock_ext() inline assembly s390: wire up execveat syscall s390/kernel: use stnsm 255 instead of stosm 0 s390/vtime: Get rid of redundant WARN_ON s390/zcrypt: kernel oops at insmod of the z90crypt device driver

Diffstat (limited to 'lib/memory-notifier-error-inject.c')

0 files changed, 0 insertions, 0 deletions

/* * pci_irq.c - ACPI PCI Interrupt Routing ($Revision: 11 $) * * Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com> * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> * Copyright (C) 2002 Dominik Brodowski <devel@brodo.de> * (c) Copyright 2008 Hewlett-Packard Development Company, L.P. * Bjorn Helgaas <bjorn.helgaas@hp.com> * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or (at * your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include <linux/dmi.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/types.h> #include <linux/spinlock.h> #include <linux/pm.h> #include <linux/pci.h> #include <linux/acpi.h> #include <linux/slab.h> #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> #define PREFIX "ACPI: " #define _COMPONENT ACPI_PCI_COMPONENT ACPI_MODULE_NAME("pci_irq"); struct acpi_prt_entry { struct list_head list; struct acpi_pci_id id; u8 pin; acpi_handle link; u32 index; /* GSI, or link _CRS index */ }; static LIST_HEAD(acpi_prt_list); static DEFINE_SPINLOCK(acpi_prt_lock); static inline char pin_name(int pin) { return 'A' + pin - 1; } /* -------------------------------------------------------------------------- PCI IRQ Routing Table (PRT) Support -------------------------------------------------------------------------- */ static struct acpi_prt_entry *acpi_pci_irq_find_prt_entry(struct pci_dev *dev, int pin) { struct acpi_prt_entry *entry; int segment = pci_domain_nr(dev->bus); int bus = dev->bus->number; int device = PCI_SLOT(dev->devfn); spin_lock(&acpi_prt_lock); list_for_each_entry(entry, &acpi_prt_list, list) { if ((segment == entry->id.segment) && (bus == entry->id.bus) && (device == entry->id.device) && (pin == entry->pin)) { spin_unlock(&acpi_prt_lock); return entry; } } spin_unlock(&acpi_prt_lock); return NULL; } /* http://bugzilla.kernel.org/show_bug.cgi?id=4773 */ static const struct dmi_system_id medion_md9580[] = { { .ident = "Medion MD9580-F laptop", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "MEDIONNB"), DMI_MATCH(DMI_PRODUCT_NAME, "A555"), }, }, { } }; /* http://bugzilla.kernel.org/show_bug.cgi?id=5044 */ static const struct dmi_system_id dell_optiplex[] = { { .ident = "Dell Optiplex GX1", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"), DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex GX1 600S+"), }, }, { } }; /* http://bugzilla.kernel.org/show_bug.cgi?id=10138 */ static const struct dmi_system_id hp_t5710[] = { { .ident = "HP t5710", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), DMI_MATCH(DMI_PRODUCT_NAME, "hp t5000 series"), DMI_MATCH(DMI_BOARD_NAME, "098Ch"), }, }, { } }; struct prt_quirk { const struct dmi_system_id *system; unsigned int segment; unsigned int bus; unsigned int device; unsigned char pin; const char *source; /* according to BIOS */ const char *actual_source; }; #define PCI_INTX_PIN(c) (c - 'A' + 1) /* * These systems have incorrect _PRT entries. The BIOS claims the PCI * interrupt at the listed segment/bus/device/pin is connected to the first * link device, but it is actually connected to the second. */ static const struct prt_quirk prt_quirks[] = { { medion_md9580, 0, 0, 9, PCI_INTX_PIN('A'), "\\_SB_.PCI0.ISA_.LNKA", "\\_SB_.PCI0.ISA_.LNKB"}, { dell_optiplex, 0, 0, 0xd, PCI_INTX_PIN('A'), "\\_SB_.LNKB", "\\_SB_.LNKA"}, { hp_t5710, 0, 0, 1, PCI_INTX_PIN('A'), "\\_SB_.PCI0.LNK1", "\\_SB_.PCI0.LNK3"}, }; static void do_prt_fixups(struct acpi_prt_entry *entry, struct acpi_pci_routing_table *prt) { int i; const struct prt_quirk *quirk; for (i = 0; i < ARRAY_SIZE(prt_quirks); i++) { quirk = &prt_quirks[i]; /* All current quirks involve link devices, not GSIs */ if (!prt->source) continue; if (dmi_check_system(quirk->system) && entry->id.segment == quirk->segment && entry->id.bus == quirk->bus && entry->id.device == quirk->device && entry->pin == quirk->pin && !strcmp(prt->source, quirk->source) && strlen(prt->source) >= strlen(quirk->actual_source)) { printk(KERN_WARNING PREFIX "firmware reports " "%04x:%02x:%02x PCI INT %c connected to %s; " "changing to %s\n", entry->id.segment, entry->id.bus, entry->id.device, pin_name(entry->pin), prt->source, quirk->actual_source); strcpy(prt->source, quirk->actual_source); } } } static int acpi_pci_irq_add_entry(acpi_handle handle, struct pci_bus *bus, struct acpi_pci_routing_table *prt) { struct acpi_prt_entry *entry; entry = kzalloc(sizeof(struct acpi_prt_entry), GFP_KERNEL); if (!entry) return -ENOMEM; /* * Note that the _PRT uses 0=INTA, 1=INTB, etc, while PCI uses * 1=INTA, 2=INTB. We use the PCI encoding throughout, so convert * it here. */ entry->id.segment = pci_domain_nr(bus); entry->id.bus = bus->number; entry->id.device = (prt->address >> 16) & 0xFFFF; entry->pin = prt->pin + 1; do_prt_fixups(entry, prt); entry->index = prt->source_index; /* * Type 1: Dynamic * --------------- * The 'source' field specifies the PCI interrupt link device used to * configure the IRQ assigned to this slot|dev|pin. The 'source_index' * indicates which resource descriptor in the resource template (of * the link device) this interrupt is allocated from. * * NOTE: Don't query the Link Device for IRQ information at this time * because Link Device enumeration may not have occurred yet * (e.g. exists somewhere 'below' this _PRT entry in the ACPI * namespace). */ if (prt->source[0]) acpi_get_handle(handle, prt->source, &entry->link); /* * Type 2: Static * -------------- * The 'source' field is NULL, and the 'source_index' field specifies * the IRQ value, which is hardwired to specific interrupt inputs on * the interrupt controller. */ ACPI_DEBUG_PRINT_RAW((ACPI_DB_INFO, " %04x:%02x:%02x[%c] -> %s[%d]\n", entry->id.segment, entry->id.bus, entry->id.device, pin_name(entry->pin), prt->source, entry->index)); spin_lock(&acpi_prt_lock); list_add_tail(&entry->list, &acpi_prt_list); spin_unlock(&acpi_prt_lock); return 0; } int acpi_pci_irq_add_prt(acpi_handle handle, struct pci_bus *bus) { acpi_status status; struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; struct acpi_pci_routing_table *entry; /* 'handle' is the _PRT's parent (root bridge or PCI-PCI bridge) */ status = acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer); if (ACPI_FAILURE(status)) return -ENODEV; printk(KERN_DEBUG "ACPI: PCI Interrupt Routing Table [%s._PRT]\n", (char *) buffer.pointer); kfree(buffer.pointer); buffer.length = ACPI_ALLOCATE_BUFFER; buffer.pointer = NULL; status = acpi_get_irq_routing_table(handle, &buffer); if (ACPI_FAILURE(status)) { ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PRT [%s]", acpi_format_exception(status))); kfree(buffer.pointer); return -ENODEV; } entry = buffer.pointer; while (entry && (entry->length > 0)) { acpi_pci_irq_add_entry(handle, bus, entry); entry = (struct acpi_pci_routing_table *) ((unsigned long)entry + entry->length); } kfree(buffer.pointer); return 0; } void acpi_pci_irq_del_prt(struct pci_bus *bus) { struct acpi_prt_entry *entry, *tmp; printk(KERN_DEBUG "ACPI: Delete PCI Interrupt Routing Table for %04x:%02x\n", pci_domain_nr(bus), bus->number); spin_lock(&acpi_prt_lock); list_for_each_entry_safe(entry, tmp, &acpi_prt_list, list) { if (pci_domain_nr(bus) == entry->id.segment && bus->number == entry->id.bus) { list_del(&entry->list); kfree(entry); } } spin_unlock(&acpi_prt_lock); }


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