pm24.git/arch/powerpc/sysdev/ipic.c, branch v5.6

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32Z

Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman

powerpc/ipic: drop unused functions

2019-01-14T09:39:27Z

ipic_set_highest_priority(), ipic_enable_mcp() and ipic_disable_mcp() are unused. This patch drops them. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman

powerpc/ipic: Remove unused ipic_set_priority()

2018-12-17T11:12:30Z

ipic_set_priority() has been unused since 2006 when the last usage was removed in commit b9f0f1bb2bca ("[POWERPC] Adapt ipic driver to new host_ops interface, add set_irq_type to set IRQ sense"). Reported-by: Dan Carpenter Signed-off-by: Michael Ellerman

powerpc/sysdev/ipic: check primary_ipic NULL pointer before using it

2018-10-20T02:26:47Z

ipic_get_mcp_status() is used by targets implementing NMI watchdog in target specific machine check handler in order to known whether a machine check results from a watchdog NMI reset. In case of very early machine check, primary_ipic pointer might not have been set yet, so ipic_get_mcp_status() needs to check it for nullity before using it. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman

powerpc/ipic: Fix status get and status clear

2017-11-06T05:48:13Z

IPIC Status is provided by register IPIC_SERSR and not by IPIC_SERMR which is the mask register. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman

powerpc/ipic: Support edge on IRQ0

2017-07-24T11:20:31Z

External IRQ0 (index 48) has the same capabilities as the other IRQ1-7 and is handled by the same register IPIC_SEPNR. When this register is not specified for "ack" in "ipic_info", you cannot configure this IRQ as IRQ_TYPE_EDGE_FALLING. This oversight was probably due to the non-contiguous hwirq numbering of IRQ0 in the IPIC. Signed-off-by: Jurgen Schindele [scottwood: Cleaned up commit message and posted as a proper patch] Signed-off-by: Scott Wood Signed-off-by: Michael Ellerman

powerpc: Remove all usages of NO_IRQ

2016-09-20T10:57:12Z

NO_IRQ has been == 0 on powerpc for just over ten years (since commit 0ebfff1491ef ("[POWERPC] Add new interrupt mapping core and change platforms to use it")). It's also 0 on most other arches. Although it's fairly harmless, every now and then it causes confusion when a driver is built on powerpc and another arch which doesn't define NO_IRQ. There's at least 6 definitions of NO_IRQ in drivers/, at least some of which are to work around that problem. So we'd like to remove it. This is fairly trivial in the arch code, we just convert: if (irq == NO_IRQ) to if (!irq) if (irq != NO_IRQ) to if (irq) irq = NO_IRQ; to irq = 0; return NO_IRQ; to return 0; And a few other odd cases as well. At least for now we keep the #define NO_IRQ, because there is driver code that uses NO_IRQ and the fixes to remove those will go via other trees. Note we also change some occurrences in PPC sound drivers, drivers/ps3, and drivers/macintosh. Signed-off-by: Michael Ellerman

irqdomain: Use irq_domain_get_of_node() instead of direct field access

2015-10-13T17:01:23Z

The struct irq_domain contains a "struct device_node *" field (of_node) that is almost the only link between the irqdomain and the device tree infrastructure. In order to prepare for the removal of that field, convert all users to use irq_domain_get_of_node() instead. Signed-off-by: Marc Zyngier Reviewed-and-tested-by: Hanjun Guo Tested-by: Lorenzo Pieralisi Cc: Cc: Tomasz Nowicki Cc: Suravee Suthikulpanit Cc: Graeme Gregory Cc: Jake Oshins Cc: Jiang Liu Cc: Jason Cooper Cc: Rafael J. Wysocki Link: http://lkml.kernel.org/r/1444737105-31573-2-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner

powerpc/ipic: Use irq_set_handler_locked()

2015-09-16T13:43:11Z

Use irq_set_handler_locked() as it avoids a redundant lookup of the irq descriptor. Search and replacement was done with coccinelle: @@ struct irq_data *d; expression E1; @@ -__irq_set_handler_locked(d->irq, E1); +irq_set_handler_locked(d, E1); Signed-off-by: Thomas Gleixner Cc: Jiang Liu Cc: Julia Lawall Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: Anton Blanchard Cc: linuxppc-dev@lists.ozlabs.org

genirq/irqdomain: Allow irq domain aliasing

2015-07-29T22:14:36Z

It is not uncommon (at least with the ARM stuff) to have a piece of hardware that implements different flavours of "interrupts". A typical example of this is the GICv3 ITS, which implements standard PCI/MSI support, but also some form of "generic MSI". So far, the PCI/MSI domain is registered using the ITS device_node, so that irq_find_host can return it. On the contrary, the raw MSI domain is not registered with an device_node, making it impossible to be looked up by another subsystem (obviously, using the same device_node twice would only result in confusion, as it is not defined which one irq_find_host would return). A solution to this is to "type" domains that may be aliasing, and to be able to lookup an device_node that matches a given type. For this, we introduce irq_find_matching_host() as a superset of irq_find_host: struct irq_domain *irq_find_matching_host(struct device_node *node, enum irq_domain_bus_token bus_token); where bus_token is the "type" we want to match the domain against (so far, only DOMAIN_BUS_ANY is defined). This result in some moderately invasive changes on the PPC side (which is the only user of the .match method). This has otherwise no functionnal change. Reviewed-by: Hanjun Guo Signed-off-by: Marc Zyngier Cc: Cc: Yijing Wang Cc: Ma Jun Cc: Lorenzo Pieralisi Cc: Duc Dang Cc: Bjorn Helgaas Cc: Jiang Liu Cc: Jason Cooper Link: http://lkml.kernel.org/r/1438091186-10244-2-git-send-email-marc.zyngier@arm.com Signed-off-by: Thomas Gleixner