F: drivers/platform/x86/wmi.c
AD1889 ALSA SOUND DRIVER
-M: Kyle McMartin <kyle@mcmartin.ca>
M: Thibaut Varene <T-Bone@parisc-linux.org>
W: http://wiki.parisc-linux.org/AD1889
L: linux-parisc@vger.kernel.org
F: drivers/platform/msm/
F: drivers/*/pm8???-*
F: include/linux/mfd/pm8xxx/
-T: git git://codeaurora.org/quic/kernel/davidb/linux-msm.git
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/davidb/linux-msm.git
S: Maintained
ARM/TOSA MACHINE SUPPORT
F: include/linux/atm*
ATMEL AT91 MCI DRIVER
-M: Nicolas Ferre <nicolas.ferre@atmel.com>
+M: Ludovic Desroches <ludovic.desroches@atmel.com>
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
W: http://www.atmel.com/products/AT91/
W: http://www.at91.com/
F: drivers/mmc/host/at91_mci.c
ATMEL AT91 / AT32 MCI DRIVER
-M: Nicolas Ferre <nicolas.ferre@atmel.com>
+M: Ludovic Desroches <ludovic.desroches@atmel.com>
S: Maintained
F: drivers/mmc/host/atmel-mci.c
F: drivers/mmc/host/atmel-mci-regs.h
B43 WIRELESS DRIVER
M: Stefano Brivio <stefano.brivio@polimi.it>
L: linux-wireless@vger.kernel.org
-L: b43-dev@lists.infradead.org (moderated for non-subscribers)
+L: b43-dev@lists.infradead.org
W: http://linuxwireless.org/en/users/Drivers/b43
S: Maintained
F: drivers/net/wireless/b43/
M: Larry Finger <Larry.Finger@lwfinger.net>
M: Stefano Brivio <stefano.brivio@polimi.it>
L: linux-wireless@vger.kernel.org
+L: b43-dev@lists.infradead.org
W: http://linuxwireless.org/en/users/Drivers/b43
S: Maintained
F: drivers/net/wireless/b43legacy/
BLUETOOTH DRIVERS
M: Marcel Holtmann <marcel@holtmann.org>
-M: "Gustavo F. Padovan" <padovan@profusion.mobi>
+M: Gustavo Padovan <gustavo@padovan.org>
+M: Johan Hedberg <johan.hedberg@gmail.com>
L: linux-bluetooth@vger.kernel.org
W: http://www.bluez.org/
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth-2.6.git
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth.git
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/jh/bluetooth.git
S: Maintained
F: drivers/bluetooth/
BLUETOOTH SUBSYSTEM
M: Marcel Holtmann <marcel@holtmann.org>
-M: "Gustavo F. Padovan" <padovan@profusion.mobi>
+M: Gustavo Padovan <gustavo@padovan.org>
+M: Johan Hedberg <johan.hedberg@gmail.com>
L: linux-bluetooth@vger.kernel.org
W: http://www.bluez.org/
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth-2.6.git
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/padovan/bluetooth.git
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/jh/bluetooth.git
S: Maintained
F: net/bluetooth/
F: include/net/bluetooth/
BROADCOM BRCM80211 IEEE802.11n WIRELESS DRIVER
M: Brett Rudley <brudley@broadcom.com>
-M: Henry Ptasinski <henryp@broadcom.com>
M: Roland Vossen <rvossen@broadcom.com>
M: Arend van Spriel <arend@broadcom.com>
M: Franky (Zhenhui) Lin <frankyl@broadcom.com>
F: include/linux/can/netlink.h
F: include/linux/can/platform/
+CAPABILITIES
+M: Serge Hallyn <serge.hallyn@canonical.com>
+L: linux-security-module@vger.kernel.org
+S: Supported
+F: include/linux/capability.h
+F: security/capability.c
+F: security/commoncap.c
+
CELL BROADBAND ENGINE ARCHITECTURE
M: Arnd Bergmann <arnd@arndb.de>
L: linuxppc-dev@lists.ozlabs.org
CISCO VIC ETHERNET NIC DRIVER
M: Christian Benvenuti <benve@cisco.com>
M: Roopa Prabhu <roprabhu@cisco.com>
-M: David Wang <dwang2@cisco.com>
+M: Neel Patel <neepatel@cisco.com>
+M: Nishank Trivedi <nistrive@cisco.com>
S: Supported
F: drivers/net/ethernet/cisco/enic/
F: drivers/gpu/drm/exynos
F: include/drm/exynos*
+EXYNOS MIPI DISPLAY DRIVERS
+M: Inki Dae <inki.dae@samsung.com>
+M: Donghwa Lee <dh09.lee@samsung.com>
+M: Kyungmin Park <kyungmin.park@samsung.com>
+L: linux-fbdev@vger.kernel.org
+S: Maintained
+F: drivers/video/exynos/exynos_mipi*
+F: include/video/exynos_mipi*
+
DSCC4 DRIVER
M: Francois Romieu <romieu@fr.zoreil.com>
L: netdev@vger.kernel.org
F: drivers/media/video/m5mols/
F: include/media/m5mols.h
+FUJITSU TABLET EXTRAS
+M: Robert Gerlach <khnz@gmx.de>
+L: platform-driver-x86@vger.kernel.org
+S: Maintained
+F: drivers/platform/x86/fujitsu-tablet.c
+
FUSE: FILESYSTEM IN USERSPACE
M: Miklos Szeredi <miklos@szeredi.hu>
L: fuse-devel@lists.sourceforge.net
F: include/linux/hwspinlock.h
HARMONY SOUND DRIVER
-M: Kyle McMartin <kyle@mcmartin.ca>
L: linux-parisc@vger.kernel.org
S: Maintained
F: sound/parisc/harmony.*
T: git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core
F: kernel/irq/
+ IRQ DOMAINS (IRQ NUMBER MAPPING LIBRARY)
+ M: Benjamin Herrenschmidt <benh@kernel.crashing.org>
+ M: Grant Likely <grant.likely@secretlab.ca>
+ T: git git://git.secretlab.ca/git/linux-2.6.git irqdomain/next
+ S: Maintained
+ F: Documentation/IRQ-domain.txt
+ F: include/linux/irqdomain.h
+ F: kernel/irq/irqdomain.c
+
ISAPNP
M: Jaroslav Kysela <perex@perex.cz>
S: Maintained
KERNEL AUTOMOUNTER v4 (AUTOFS4)
M: Ian Kent <raven@themaw.net>
-L: autofs@linux.kernel.org
+L: autofs@vger.kernel.org
S: Maintained
F: fs/autofs4/
M: Anton Altaparmakov <anton@tuxera.com>
L: linux-ntfs-dev@lists.sourceforge.net
W: http://www.tuxera.com/
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/aia21/ntfs-2.6.git
+T: git git://git.kernel.org/pub/scm/linux/kernel/git/aia21/ntfs.git
S: Supported
F: Documentation/filesystems/ntfs.txt
F: fs/ntfs/
ORINOCO DRIVER
L: linux-wireless@vger.kernel.org
-L: orinoco-users@lists.sourceforge.net
-L: orinoco-devel@lists.sourceforge.net
W: http://linuxwireless.org/en/users/Drivers/orinoco
W: http://www.nongnu.org/orinoco/
S: Orphan
F: drivers/block/paride/
PARISC ARCHITECTURE
-M: Kyle McMartin <kyle@mcmartin.ca>
-M: Helge Deller <deller@gmx.de>
M: "James E.J. Bottomley" <jejb@parisc-linux.org>
+M: Helge Deller <deller@gmx.de>
L: linux-parisc@vger.kernel.org
W: http://www.parisc-linux.org/
Q: http://patchwork.kernel.org/project/linux-parisc/list/
S: Maintained
F: drivers/block/ps3vram.c
+PTP HARDWARE CLOCK SUPPORT
+M: Richard Cochran <richardcochran@gmail.com>
+S: Maintained
+W: http://linuxptp.sourceforge.net/
+F: Documentation/ABI/testing/sysfs-ptp
+F: Documentation/ptp/*
+F: drivers/net/gianfar_ptp.c
+F: drivers/net/phy/dp83640*
+F: drivers/ptp/*
+F: include/linux/ptp_cl*
+
PTRACE SUPPORT
M: Roland McGrath <roland@redhat.com>
M: Oleg Nesterov <oleg@redhat.com>
SECURE DIGITAL HOST CONTROLLER INTERFACE (SDHCI) ST SPEAR DRIVER
M: Viresh Kumar <viresh.kumar@st.com>
+L: spear-devel@list.st.com
L: linux-mmc@vger.kernel.org
S: Maintained
F: drivers/mmc/host/sdhci-spear.c
SECURITY SUBSYSTEM
-M: James Morris <jmorris@namei.org>
+M: James Morris <james.l.morris@oracle.com>
L: linux-security-module@vger.kernel.org (suggested Cc:)
T: git git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security.git
W: http://security.wiki.kernel.org/
SELINUX SECURITY MODULE
M: Stephen Smalley <sds@tycho.nsa.gov>
-M: James Morris <jmorris@namei.org>
+M: James Morris <james.l.morris@oracle.com>
M: Eric Paris <eparis@parisplace.org>
L: selinux@tycho.nsa.gov (subscribers-only, general discussion)
W: http://selinuxproject.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6.git
S: Maintained
+F: include/linux/sunserialcore.h
F: drivers/tty/serial/suncore.c
-F: drivers/tty/serial/suncore.h
F: drivers/tty/serial/sunhv.c
F: drivers/tty/serial/sunsab.c
F: drivers/tty/serial/sunsab.h
SPEAR PLATFORM SUPPORT
M: Viresh Kumar <viresh.kumar@st.com>
+L: spear-devel@list.st.com
+L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
W: http://www.st.com/spear
S: Maintained
F: arch/arm/plat-spear/
SPEAR3XX MACHINE SUPPORT
M: Viresh Kumar <viresh.kumar@st.com>
+L: spear-devel@list.st.com
+L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
W: http://www.st.com/spear
S: Maintained
F: arch/arm/mach-spear3xx/
SPEAR6XX MACHINE SUPPORT
M: Rajeev Kumar <rajeev-dlh.kumar@st.com>
+L: spear-devel@list.st.com
+L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
W: http://www.st.com/spear
S: Maintained
F: arch/arm/mach-spear6xx/
SPEAR CLOCK FRAMEWORK SUPPORT
M: Viresh Kumar <viresh.kumar@st.com>
+L: spear-devel@list.st.com
+L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
W: http://www.st.com/spear
S: Maintained
F: arch/arm/mach-spear*/clock.c
SPEAR PAD MULTIPLEXING SUPPORT
M: Viresh Kumar <viresh.kumar@st.com>
+L: spear-devel@list.st.com
+L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
W: http://www.st.com/spear
S: Maintained
F: arch/arm/plat-spear/include/plat/padmux.h
S: Odd Fixes
F: drivers/staging/olpc_dcon/
+STAGING - OZMO DEVICES USB OVER WIFI DRIVER
+M: Chris Kelly <ckelly@ozmodevices.com>
+S: Maintained
+F: drivers/staging/ozwpan/
+
STAGING - PARALLEL LCD/KEYPAD PANEL DRIVER
M: Willy Tarreau <willy@meta-x.org>
S: Odd Fixes
M: Wim Van Sebroeck <wim@iguana.be>
L: linux-watchdog@vger.kernel.org
W: http://www.linux-watchdog.org/
-T: git git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog.git
+T: git git://www.linux-watchdog.org/linux-watchdog.git
S: Maintained
F: Documentation/watchdog/
F: drivers/watchdog/
F: Documentation/filesystems/xfs.txt
F: fs/xfs/
+XILINX AXI ETHERNET DRIVER
+M: Ariane Keller <ariane.keller@tik.ee.ethz.ch>
+M: Daniel Borkmann <daniel.borkmann@tik.ee.ethz.ch>
+S: Maintained
+F: drivers/net/ethernet/xilinx/xilinx_axienet*
+
XILINX SYSTEMACE DRIVER
M: Grant Likely <grant.likely@secretlab.ca>
W: http://www.secretlab.ca/
static inline notrace void decrementer_check_overflow(void)
{
u64 now = get_tb_or_rtc();
- u64 *next_tb = &__get_cpu_var(decrementers_next_tb);
+ u64 *next_tb;
+
+ preempt_disable();
+ next_tb = &__get_cpu_var(decrementers_next_tb);
if (now >= *next_tb)
set_dec(1);
+ preempt_enable();
}
notrace void arch_local_irq_restore(unsigned long en)
local_irq_restore(flags);
}
-
- /*
- * IRQ controller and virtual interrupts
- */
-
- /* The main irq map itself is an array of NR_IRQ entries containing the
- * associate host and irq number. An entry with a host of NULL is free.
- * An entry can be allocated if it's free, the allocator always then sets
- * hwirq first to the host's invalid irq number and then fills ops.
- */
- struct irq_map_entry {
- irq_hw_number_t hwirq;
- struct irq_host *host;
- };
-
- static LIST_HEAD(irq_hosts);
- static DEFINE_RAW_SPINLOCK(irq_big_lock);
- static DEFINE_MUTEX(revmap_trees_mutex);
- static struct irq_map_entry irq_map[NR_IRQS];
- static unsigned int irq_virq_count = NR_IRQS;
- static struct irq_host *irq_default_host;
-
irq_hw_number_t irqd_to_hwirq(struct irq_data *d)
{
- return irq_map[d->irq].hwirq;
+ return d->hwirq;
}
EXPORT_SYMBOL_GPL(irqd_to_hwirq);
irq_hw_number_t virq_to_hw(unsigned int virq)
{
- return irq_map[virq].hwirq;
+ struct irq_data *irq_data = irq_get_irq_data(virq);
+ return WARN_ON(!irq_data) ? 0 : irq_data->hwirq;
}
EXPORT_SYMBOL_GPL(virq_to_hw);
- bool virq_is_host(unsigned int virq, struct irq_host *host)
- {
- return irq_map[virq].host == host;
- }
- EXPORT_SYMBOL_GPL(virq_is_host);
-
- static int default_irq_host_match(struct irq_host *h, struct device_node *np)
- {
- return h->of_node != NULL && h->of_node == np;
- }
-
- struct irq_host *irq_alloc_host(struct device_node *of_node,
- unsigned int revmap_type,
- unsigned int revmap_arg,
- struct irq_host_ops *ops,
- irq_hw_number_t inval_irq)
- {
- struct irq_host *host;
- unsigned int size = sizeof(struct irq_host);
- unsigned int i;
- unsigned int *rmap;
- unsigned long flags;
-
- /* Allocate structure and revmap table if using linear mapping */
- if (revmap_type == IRQ_HOST_MAP_LINEAR)
- size += revmap_arg * sizeof(unsigned int);
- host = kzalloc(size, GFP_KERNEL);
- if (host == NULL)
- return NULL;
-
- /* Fill structure */
- host->revmap_type = revmap_type;
- host->inval_irq = inval_irq;
- host->ops = ops;
- host->of_node = of_node_get(of_node);
-
- if (host->ops->match == NULL)
- host->ops->match = default_irq_host_match;
-
- raw_spin_lock_irqsave(&irq_big_lock, flags);
-
- /* If it's a legacy controller, check for duplicates and
- * mark it as allocated (we use irq 0 host pointer for that
- */
- if (revmap_type == IRQ_HOST_MAP_LEGACY) {
- if (irq_map[0].host != NULL) {
- raw_spin_unlock_irqrestore(&irq_big_lock, flags);
- of_node_put(host->of_node);
- kfree(host);
- return NULL;
- }
- irq_map[0].host = host;
- }
-
- list_add(&host->link, &irq_hosts);
- raw_spin_unlock_irqrestore(&irq_big_lock, flags);
-
- /* Additional setups per revmap type */
- switch(revmap_type) {
- case IRQ_HOST_MAP_LEGACY:
- /* 0 is always the invalid number for legacy */
- host->inval_irq = 0;
- /* setup us as the host for all legacy interrupts */
- for (i = 1; i < NUM_ISA_INTERRUPTS; i++) {
- irq_map[i].hwirq = i;
- smp_wmb();
- irq_map[i].host = host;
- smp_wmb();
-
- /* Legacy flags are left to default at this point,
- * one can then use irq_create_mapping() to
- * explicitly change them
- */
- ops->map(host, i, i);
-
- /* Clear norequest flags */
- irq_clear_status_flags(i, IRQ_NOREQUEST);
- }
- break;
- case IRQ_HOST_MAP_LINEAR:
- rmap = (unsigned int *)(host + 1);
- for (i = 0; i < revmap_arg; i++)
- rmap[i] = NO_IRQ;
- host->revmap_data.linear.size = revmap_arg;
- smp_wmb();
- host->revmap_data.linear.revmap = rmap;
- break;
- case IRQ_HOST_MAP_TREE:
- INIT_RADIX_TREE(&host->revmap_data.tree, GFP_KERNEL);
- break;
- default:
- break;
- }
-
- pr_debug("irq: Allocated host of type %d @0x%p\n", revmap_type, host);
-
- return host;
- }
-
- struct irq_host *irq_find_host(struct device_node *node)
- {
- struct irq_host *h, *found = NULL;
- unsigned long flags;
-
- /* We might want to match the legacy controller last since
- * it might potentially be set to match all interrupts in
- * the absence of a device node. This isn't a problem so far
- * yet though...
- */
- raw_spin_lock_irqsave(&irq_big_lock, flags);
- list_for_each_entry(h, &irq_hosts, link)
- if (h->ops->match(h, node)) {
- found = h;
- break;
- }
- raw_spin_unlock_irqrestore(&irq_big_lock, flags);
- return found;
- }
- EXPORT_SYMBOL_GPL(irq_find_host);
-
- void irq_set_default_host(struct irq_host *host)
- {
- pr_debug("irq: Default host set to @0x%p\n", host);
-
- irq_default_host = host;
- }
-
- void irq_set_virq_count(unsigned int count)
- {
- pr_debug("irq: Trying to set virq count to %d\n", count);
-
- BUG_ON(count < NUM_ISA_INTERRUPTS);
- if (count < NR_IRQS)
- irq_virq_count = count;
- }
-
- static int irq_setup_virq(struct irq_host *host, unsigned int virq,
- irq_hw_number_t hwirq)
- {
- int res;
-
- res = irq_alloc_desc_at(virq, 0);
- if (res != virq) {
- pr_debug("irq: -> allocating desc failed\n");
- goto error;
- }
-
- /* map it */
- smp_wmb();
- irq_map[virq].hwirq = hwirq;
- smp_mb();
-
- if (host->ops->map(host, virq, hwirq)) {
- pr_debug("irq: -> mapping failed, freeing\n");
- goto errdesc;
- }
-
- irq_clear_status_flags(virq, IRQ_NOREQUEST);
-
- return 0;
-
- errdesc:
- irq_free_descs(virq, 1);
- error:
- irq_free_virt(virq, 1);
- return -1;
- }
-
- unsigned int irq_create_direct_mapping(struct irq_host *host)
- {
- unsigned int virq;
-
- if (host == NULL)
- host = irq_default_host;
-
- BUG_ON(host == NULL);
- WARN_ON(host->revmap_type != IRQ_HOST_MAP_NOMAP);
-
- virq = irq_alloc_virt(host, 1, 0);
- if (virq == NO_IRQ) {
- pr_debug("irq: create_direct virq allocation failed\n");
- return NO_IRQ;
- }
-
- pr_debug("irq: create_direct obtained virq %d\n", virq);
-
- if (irq_setup_virq(host, virq, virq))
- return NO_IRQ;
-
- return virq;
- }
-
- unsigned int irq_create_mapping(struct irq_host *host,
- irq_hw_number_t hwirq)
- {
- unsigned int virq, hint;
-
- pr_debug("irq: irq_create_mapping(0x%p, 0x%lx)\n", host, hwirq);
-
- /* Look for default host if nececssary */
- if (host == NULL)
- host = irq_default_host;
- if (host == NULL) {
- printk(KERN_WARNING "irq_create_mapping called for"
- " NULL host, hwirq=%lx\n", hwirq);
- WARN_ON(1);
- return NO_IRQ;
- }
- pr_debug("irq: -> using host @%p\n", host);
-
- /* Check if mapping already exists */
- virq = irq_find_mapping(host, hwirq);
- if (virq != NO_IRQ) {
- pr_debug("irq: -> existing mapping on virq %d\n", virq);
- return virq;
- }
-
- /* Get a virtual interrupt number */
- if (host->revmap_type == IRQ_HOST_MAP_LEGACY) {
- /* Handle legacy */
- virq = (unsigned int)hwirq;
- if (virq == 0 || virq >= NUM_ISA_INTERRUPTS)
- return NO_IRQ;
- return virq;
- } else {
- /* Allocate a virtual interrupt number */
- hint = hwirq % irq_virq_count;
- virq = irq_alloc_virt(host, 1, hint);
- if (virq == NO_IRQ) {
- pr_debug("irq: -> virq allocation failed\n");
- return NO_IRQ;
- }
- }
-
- if (irq_setup_virq(host, virq, hwirq))
- return NO_IRQ;
-
- pr_debug("irq: irq %lu on host %s mapped to virtual irq %u\n",
- hwirq, host->of_node ? host->of_node->full_name : "null", virq);
-
- return virq;
- }
- EXPORT_SYMBOL_GPL(irq_create_mapping);
-
- unsigned int irq_create_of_mapping(struct device_node *controller,
- const u32 *intspec, unsigned int intsize)
- {
- struct irq_host *host;
- irq_hw_number_t hwirq;
- unsigned int type = IRQ_TYPE_NONE;
- unsigned int virq;
-
- if (controller == NULL)
- host = irq_default_host;
- else
- host = irq_find_host(controller);
- if (host == NULL) {
- printk(KERN_WARNING "irq: no irq host found for %s !\n",
- controller->full_name);
- return NO_IRQ;
- }
-
- /* If host has no translation, then we assume interrupt line */
- if (host->ops->xlate == NULL)
- hwirq = intspec[0];
- else {
- if (host->ops->xlate(host, controller, intspec, intsize,
- &hwirq, &type))
- return NO_IRQ;
- }
-
- /* Create mapping */
- virq = irq_create_mapping(host, hwirq);
- if (virq == NO_IRQ)
- return virq;
-
- /* Set type if specified and different than the current one */
- if (type != IRQ_TYPE_NONE &&
- type != (irqd_get_trigger_type(irq_get_irq_data(virq))))
- irq_set_irq_type(virq, type);
- return virq;
- }
- EXPORT_SYMBOL_GPL(irq_create_of_mapping);
-
- void irq_dispose_mapping(unsigned int virq)
- {
- struct irq_host *host;
- irq_hw_number_t hwirq;
-
- if (virq == NO_IRQ)
- return;
-
- host = irq_map[virq].host;
- if (WARN_ON(host == NULL))
- return;
-
- /* Never unmap legacy interrupts */
- if (host->revmap_type == IRQ_HOST_MAP_LEGACY)
- return;
-
- irq_set_status_flags(virq, IRQ_NOREQUEST);
-
- /* remove chip and handler */
- irq_set_chip_and_handler(virq, NULL, NULL);
-
- /* Make sure it's completed */
- synchronize_irq(virq);
-
- /* Tell the PIC about it */
- if (host->ops->unmap)
- host->ops->unmap(host, virq);
- smp_mb();
-
- /* Clear reverse map */
- hwirq = irq_map[virq].hwirq;
- switch(host->revmap_type) {
- case IRQ_HOST_MAP_LINEAR:
- if (hwirq < host->revmap_data.linear.size)
- host->revmap_data.linear.revmap[hwirq] = NO_IRQ;
- break;
- case IRQ_HOST_MAP_TREE:
- mutex_lock(&revmap_trees_mutex);
- radix_tree_delete(&host->revmap_data.tree, hwirq);
- mutex_unlock(&revmap_trees_mutex);
- break;
- }
-
- /* Destroy map */
- smp_mb();
- irq_map[virq].hwirq = host->inval_irq;
-
- irq_free_descs(virq, 1);
- /* Free it */
- irq_free_virt(virq, 1);
- }
- EXPORT_SYMBOL_GPL(irq_dispose_mapping);
-
- unsigned int irq_find_mapping(struct irq_host *host,
- irq_hw_number_t hwirq)
- {
- unsigned int i;
- unsigned int hint = hwirq % irq_virq_count;
-
- /* Look for default host if nececssary */
- if (host == NULL)
- host = irq_default_host;
- if (host == NULL)
- return NO_IRQ;
-
- /* legacy -> bail early */
- if (host->revmap_type == IRQ_HOST_MAP_LEGACY)
- return hwirq;
-
- /* Slow path does a linear search of the map */
- if (hint < NUM_ISA_INTERRUPTS)
- hint = NUM_ISA_INTERRUPTS;
- i = hint;
- do {
- if (irq_map[i].host == host &&
- irq_map[i].hwirq == hwirq)
- return i;
- i++;
- if (i >= irq_virq_count)
- i = NUM_ISA_INTERRUPTS;
- } while(i != hint);
- return NO_IRQ;
- }
- EXPORT_SYMBOL_GPL(irq_find_mapping);
-
#ifdef CONFIG_SMP
int irq_choose_cpu(const struct cpumask *mask)
{
}
#endif
- unsigned int irq_radix_revmap_lookup(struct irq_host *host,
- irq_hw_number_t hwirq)
- {
- struct irq_map_entry *ptr;
- unsigned int virq;
-
- if (WARN_ON_ONCE(host->revmap_type != IRQ_HOST_MAP_TREE))
- return irq_find_mapping(host, hwirq);
-
- /*
- * The ptr returned references the static global irq_map.
- * but freeing an irq can delete nodes along the path to
- * do the lookup via call_rcu.
- */
- rcu_read_lock();
- ptr = radix_tree_lookup(&host->revmap_data.tree, hwirq);
- rcu_read_unlock();
-
- /*
- * If found in radix tree, then fine.
- * Else fallback to linear lookup - this should not happen in practice
- * as it means that we failed to insert the node in the radix tree.
- */
- if (ptr)
- virq = ptr - irq_map;
- else
- virq = irq_find_mapping(host, hwirq);
-
- return virq;
- }
-
- void irq_radix_revmap_insert(struct irq_host *host, unsigned int virq,
- irq_hw_number_t hwirq)
- {
- if (WARN_ON(host->revmap_type != IRQ_HOST_MAP_TREE))
- return;
-
- if (virq != NO_IRQ) {
- mutex_lock(&revmap_trees_mutex);
- radix_tree_insert(&host->revmap_data.tree, hwirq,
- &irq_map[virq]);
- mutex_unlock(&revmap_trees_mutex);
- }
- }
-
- unsigned int irq_linear_revmap(struct irq_host *host,
- irq_hw_number_t hwirq)
- {
- unsigned int *revmap;
-
- if (WARN_ON_ONCE(host->revmap_type != IRQ_HOST_MAP_LINEAR))
- return irq_find_mapping(host, hwirq);
-
- /* Check revmap bounds */
- if (unlikely(hwirq >= host->revmap_data.linear.size))
- return irq_find_mapping(host, hwirq);
-
- /* Check if revmap was allocated */
- revmap = host->revmap_data.linear.revmap;
- if (unlikely(revmap == NULL))
- return irq_find_mapping(host, hwirq);
-
- /* Fill up revmap with slow path if no mapping found */
- if (unlikely(revmap[hwirq] == NO_IRQ))
- revmap[hwirq] = irq_find_mapping(host, hwirq);
-
- return revmap[hwirq];
- }
-
- unsigned int irq_alloc_virt(struct irq_host *host,
- unsigned int count,
- unsigned int hint)
- {
- unsigned long flags;
- unsigned int i, j, found = NO_IRQ;
-
- if (count == 0 || count > (irq_virq_count - NUM_ISA_INTERRUPTS))
- return NO_IRQ;
-
- raw_spin_lock_irqsave(&irq_big_lock, flags);
-
- /* Use hint for 1 interrupt if any */
- if (count == 1 && hint >= NUM_ISA_INTERRUPTS &&
- hint < irq_virq_count && irq_map[hint].host == NULL) {
- found = hint;
- goto hint_found;
- }
-
- /* Look for count consecutive numbers in the allocatable
- * (non-legacy) space
- */
- for (i = NUM_ISA_INTERRUPTS, j = 0; i < irq_virq_count; i++) {
- if (irq_map[i].host != NULL)
- j = 0;
- else
- j++;
-
- if (j == count) {
- found = i - count + 1;
- break;
- }
- }
- if (found == NO_IRQ) {
- raw_spin_unlock_irqrestore(&irq_big_lock, flags);
- return NO_IRQ;
- }
- hint_found:
- for (i = found; i < (found + count); i++) {
- irq_map[i].hwirq = host->inval_irq;
- smp_wmb();
- irq_map[i].host = host;
- }
- raw_spin_unlock_irqrestore(&irq_big_lock, flags);
- return found;
- }
-
- void irq_free_virt(unsigned int virq, unsigned int count)
- {
- unsigned long flags;
- unsigned int i;
-
- WARN_ON (virq < NUM_ISA_INTERRUPTS);
- WARN_ON (count == 0 || (virq + count) > irq_virq_count);
-
- if (virq < NUM_ISA_INTERRUPTS) {
- if (virq + count < NUM_ISA_INTERRUPTS)
- return;
- count =- NUM_ISA_INTERRUPTS - virq;
- virq = NUM_ISA_INTERRUPTS;
- }
-
- if (count > irq_virq_count || virq > irq_virq_count - count) {
- if (virq > irq_virq_count)
- return;
- count = irq_virq_count - virq;
- }
-
- raw_spin_lock_irqsave(&irq_big_lock, flags);
- for (i = virq; i < (virq + count); i++) {
- struct irq_host *host;
-
- host = irq_map[i].host;
- irq_map[i].hwirq = host->inval_irq;
- smp_wmb();
- irq_map[i].host = NULL;
- }
- raw_spin_unlock_irqrestore(&irq_big_lock, flags);
- }
-
int arch_early_irq_init(void)
{
return 0;
}
- #ifdef CONFIG_VIRQ_DEBUG
- static int virq_debug_show(struct seq_file *m, void *private)
- {
- unsigned long flags;
- struct irq_desc *desc;
- const char *p;
- static const char none[] = "none";
- void *data;
- int i;
-
- seq_printf(m, "%-5s %-7s %-15s %-18s %s\n", "virq", "hwirq",
- "chip name", "chip data", "host name");
-
- for (i = 1; i < nr_irqs; i++) {
- desc = irq_to_desc(i);
- if (!desc)
- continue;
-
- raw_spin_lock_irqsave(&desc->lock, flags);
-
- if (desc->action && desc->action->handler) {
- struct irq_chip *chip;
-
- seq_printf(m, "%5d ", i);
- seq_printf(m, "0x%05lx ", irq_map[i].hwirq);
-
- chip = irq_desc_get_chip(desc);
- if (chip && chip->name)
- p = chip->name;
- else
- p = none;
- seq_printf(m, "%-15s ", p);
-
- data = irq_desc_get_chip_data(desc);
- seq_printf(m, "0x%16p ", data);
-
- if (irq_map[i].host && irq_map[i].host->of_node)
- p = irq_map[i].host->of_node->full_name;
- else
- p = none;
- seq_printf(m, "%s\n", p);
- }
-
- raw_spin_unlock_irqrestore(&desc->lock, flags);
- }
-
- return 0;
- }
-
- static int virq_debug_open(struct inode *inode, struct file *file)
- {
- return single_open(file, virq_debug_show, inode->i_private);
- }
-
- static const struct file_operations virq_debug_fops = {
- .open = virq_debug_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- };
-
- static int __init irq_debugfs_init(void)
- {
- if (debugfs_create_file("virq_mapping", S_IRUGO, powerpc_debugfs_root,
- NULL, &virq_debug_fops) == NULL)
- return -ENOMEM;
-
- return 0;
- }
- __initcall(irq_debugfs_init);
- #endif /* CONFIG_VIRQ_DEBUG */
-
#ifdef CONFIG_PPC64
static int __init setup_noirqdistrib(char *str)
{
Code Review / linux-3.10.git / commitdiff