p71924506
/
linux_old1
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
linux_old1/include/linux/of_irq.h

113 lines
3.4 KiB
C
Raw Normal View History

of/irq: Move irq_of_parse_and_map() to common code Merge common code between PowerPC and Microblaze. SPARC implements irq_of_parse_and_map(), but the implementation is different, so it does not use this code. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Michal Simek <monstr@monstr.eu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Jeremy Kerr <jeremy.kerr@canonical.com>
2010-06-19 01:09:59 +08:00
#ifndef __OF_IRQ_H
#define __OF_IRQ_H
#include <linux/types.h>
of/irq: merge irq mapping code Merge common irq mapping code between PowerPC and Microblaze. This patch merges of_irq_find_parent(), of_irq_map_raw() and of_irq_map_one(). The functions are dependent on one another, so all three are merged in a single patch. Other than cosmetic difference (ie. DBG() vs. pr_debug()), the implementations are identical. of_irq_to_resource() is also merged, but in this case the implementations are different. This patch drops the microblaze version and uses the powerpc implementation unchanged. The microblaze version essentially open-coded irq_of_parse_and_map() which it does not need to do. Therefore the powerpc version is safe to adopt. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> CC: Michal Simek <monstr@monstr.eu> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Stephen Rothwell <sfr@canb.auug.org.au>
2010-06-08 21:48:06 +08:00
#include <linux/errno.h>
of/irq: of_irq.c needs to include linux/irq.h It works on current architectures simply because asm/prom.h includes it, but it broke when x86 turned on CONFIG_OF. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2010-10-22 01:34:55 +08:00
#include <linux/irq.h>
irq_domain: Centralize definition of irq_dispose_mapping() Several architectures define their own empty irq_dispose_mapping(). Since the irq_domain code is centralized now, there is little need to do so. This patch removes them and creates a new empty copy when !CONFIG_IRQ_DOMAIN is selected. The patch also means that IRQ_DOMAIN becomes selectable on all architectures. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Rob Herring <rob.herring@calxeda.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jonas Bonn <jonas@southpole.se> Cc: sparclinux@vger.kernel.org Cc: linux@lists.openrisc.net
2012-02-24 23:24:17 +08:00
#include <linux/irqdomain.h>
of/irq: merge irq mapping code Merge common irq mapping code between PowerPC and Microblaze. This patch merges of_irq_find_parent(), of_irq_map_raw() and of_irq_map_one(). The functions are dependent on one another, so all three are merged in a single patch. Other than cosmetic difference (ie. DBG() vs. pr_debug()), the implementations are identical. of_irq_to_resource() is also merged, but in this case the implementations are different. This patch drops the microblaze version and uses the powerpc implementation unchanged. The microblaze version essentially open-coded irq_of_parse_and_map() which it does not need to do. Therefore the powerpc version is safe to adopt. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> CC: Michal Simek <monstr@monstr.eu> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Stephen Rothwell <sfr@canb.auug.org.au>
2010-06-08 21:48:06 +08:00
#include <linux/ioport.h>
of/irq: Move irq_of_parse_and_map() to common code Merge common code between PowerPC and Microblaze. SPARC implements irq_of_parse_and_map(), but the implementation is different, so it does not use this code. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Michal Simek <monstr@monstr.eu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Jeremy Kerr <jeremy.kerr@canonical.com>
2010-06-19 01:09:59 +08:00
#include <linux/of.h>
of/irq: introduce of_irq_init of_irq_init will scan the devicetree for matching interrupt controller nodes. Then it calls an initialization function for each found controller in the proper order with parent nodes initialized before child nodes. Based on initial pseudo code from Grant Likely. Changes in v4: - Drop unnecessary empty list check - Be more verbose on errors - Simplify "if (!desc) WARN_ON(1)" to "if (WARN_ON(!desc))" Changes in v3: - add missing kfree's found by Jamie - Implement Grant's comments to simplify the init loop - fix function comments Changes in v2: - Complete re-write of list searching code from Grant Likely Signed-off-by: Rob Herring <rob.herring@calxeda.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Tested-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Grant Likely <grant.likely@secretlab.ca>
2011-09-21 04:13:50 +08:00
typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *);
of/irq: merge irq mapping code Merge common irq mapping code between PowerPC and Microblaze. This patch merges of_irq_find_parent(), of_irq_map_raw() and of_irq_map_one(). The functions are dependent on one another, so all three are merged in a single patch. Other than cosmetic difference (ie. DBG() vs. pr_debug()), the implementations are identical. of_irq_to_resource() is also merged, but in this case the implementations are different. This patch drops the microblaze version and uses the powerpc implementation unchanged. The microblaze version essentially open-coded irq_of_parse_and_map() which it does not need to do. Therefore the powerpc version is safe to adopt. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> CC: Michal Simek <monstr@monstr.eu> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Stephen Rothwell <sfr@canb.auug.org.au>
2010-06-08 21:48:06 +08:00
/*
* Workarounds only applied to 32bit powermac machines
*/
#define OF_IMAP_OLDWORLD_MAC 0x00000001
#define OF_IMAP_NO_PHANDLE 0x00000002
#if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC)
extern unsigned int of_irq_workarounds;
extern struct device_node *of_irq_dflt_pic;
of/irq: Rename of_irq_map_* functions to of_irq_parse_* The OF irq handling code has been overloading the term 'map' to refer to both parsing the data in the device tree and mapping it to the internal linux irq system. This is probably because the device tree does have the concept of an 'interrupt-map' function for translating interrupt references from one node to another, but 'map' is still confusing when the primary purpose of some of the functions are to parse the DT data. This patch renames all the of_irq_map_* functions to of_irq_parse_* which makes it clear that there is a difference between the parsing phase and the mapping phase. Kernel code can make use of just the parsing or just the mapping support as needed by the subsystem. The patch was generated mechanically with a handful of sed commands. Signed-off-by: Grant Likely <grant.likely@linaro.org> Acked-by: Michal Simek <monstr@monstr.eu> Acked-by: Tony Lindgren <tony@atomide.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-09-20 00:22:36 +08:00
extern int of_irq_parse_oldworld(struct device_node *device, int index,
of/irq: Replace of_irq with of_phandle_args struct of_irq and struct of_phandle_args are exactly the same structure. This patch makes the kernel use of_phandle_args everywhere. This in itself isn't a big deal, but it makes some follow-on patches simpler. Signed-off-by: Grant Likely <grant.likely@linaro.org> Acked-by: Michal Simek <monstr@monstr.eu> Acked-by: Tony Lindgren <tony@atomide.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-09-15 23:39:11 +08:00
struct of_phandle_args *out_irq);
of/irq: merge irq mapping code Merge common irq mapping code between PowerPC and Microblaze. This patch merges of_irq_find_parent(), of_irq_map_raw() and of_irq_map_one(). The functions are dependent on one another, so all three are merged in a single patch. Other than cosmetic difference (ie. DBG() vs. pr_debug()), the implementations are identical. of_irq_to_resource() is also merged, but in this case the implementations are different. This patch drops the microblaze version and uses the powerpc implementation unchanged. The microblaze version essentially open-coded irq_of_parse_and_map() which it does not need to do. Therefore the powerpc version is safe to adopt. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> CC: Michal Simek <monstr@monstr.eu> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Stephen Rothwell <sfr@canb.auug.org.au>
2010-06-08 21:48:06 +08:00
#else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
#define of_irq_workarounds (0)
#define of_irq_dflt_pic (NULL)
of/irq: Rename of_irq_map_* functions to of_irq_parse_* The OF irq handling code has been overloading the term 'map' to refer to both parsing the data in the device tree and mapping it to the internal linux irq system. This is probably because the device tree does have the concept of an 'interrupt-map' function for translating interrupt references from one node to another, but 'map' is still confusing when the primary purpose of some of the functions are to parse the DT data. This patch renames all the of_irq_map_* functions to of_irq_parse_* which makes it clear that there is a difference between the parsing phase and the mapping phase. Kernel code can make use of just the parsing or just the mapping support as needed by the subsystem. The patch was generated mechanically with a handful of sed commands. Signed-off-by: Grant Likely <grant.likely@linaro.org> Acked-by: Michal Simek <monstr@monstr.eu> Acked-by: Tony Lindgren <tony@atomide.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-09-20 00:22:36 +08:00
static inline int of_irq_parse_oldworld(struct device_node *device, int index,
of/irq: Replace of_irq with of_phandle_args struct of_irq and struct of_phandle_args are exactly the same structure. This patch makes the kernel use of_phandle_args everywhere. This in itself isn't a big deal, but it makes some follow-on patches simpler. Signed-off-by: Grant Likely <grant.likely@linaro.org> Acked-by: Michal Simek <monstr@monstr.eu> Acked-by: Tony Lindgren <tony@atomide.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-09-15 23:39:11 +08:00
struct of_phandle_args *out_irq)
of/irq: merge irq mapping code Merge common irq mapping code between PowerPC and Microblaze. This patch merges of_irq_find_parent(), of_irq_map_raw() and of_irq_map_one(). The functions are dependent on one another, so all three are merged in a single patch. Other than cosmetic difference (ie. DBG() vs. pr_debug()), the implementations are identical. of_irq_to_resource() is also merged, but in this case the implementations are different. This patch drops the microblaze version and uses the powerpc implementation unchanged. The microblaze version essentially open-coded irq_of_parse_and_map() which it does not need to do. Therefore the powerpc version is safe to adopt. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> CC: Michal Simek <monstr@monstr.eu> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Stephen Rothwell <sfr@canb.auug.org.au>
2010-06-08 21:48:06 +08:00
{
return -EINVAL;
}
#endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
of/irq: Refactor interrupt-map parsing All the users of of_irq_parse_raw pass in a raw interrupt specifier from the device tree and expect it to be returned (possibly modified) in an of_phandle_args structure. However, the primary function of of_irq_parse_raw() is to check for translations due to the presence of one or more interrupt-map properties. The actual placing of the data into an of_phandle_args structure is trivial. If it is refactored to accept an of_phandle_args structure directly, then it becomes possible to consume of_phandle_args from other sources. This is important for an upcoming patch that allows a device to be connected to more than one interrupt parent. It also simplifies the code a bit. The biggest complication with this patch is that the old version works on the interrupt specifiers in __be32 form, but the of_phandle_args structure is intended to carry it in the cpu-native version. A bit of churn was required to make this work. In the end it results in tighter code, so the churn is worth it. Signed-off-by: Grant Likely <grant.likely@linaro.org> Acked-by: Tony Lindgren <tony@atomide.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-09-16 05:32:39 +08:00
extern int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq);
of/irq: Rename of_irq_map_* functions to of_irq_parse_* The OF irq handling code has been overloading the term 'map' to refer to both parsing the data in the device tree and mapping it to the internal linux irq system. This is probably because the device tree does have the concept of an 'interrupt-map' function for translating interrupt references from one node to another, but 'map' is still confusing when the primary purpose of some of the functions are to parse the DT data. This patch renames all the of_irq_map_* functions to of_irq_parse_* which makes it clear that there is a difference between the parsing phase and the mapping phase. Kernel code can make use of just the parsing or just the mapping support as needed by the subsystem. The patch was generated mechanically with a handful of sed commands. Signed-off-by: Grant Likely <grant.likely@linaro.org> Acked-by: Michal Simek <monstr@monstr.eu> Acked-by: Tony Lindgren <tony@atomide.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-09-20 00:22:36 +08:00
extern int of_irq_parse_one(struct device_node *device, int index,
of/irq: Replace of_irq with of_phandle_args struct of_irq and struct of_phandle_args are exactly the same structure. This patch makes the kernel use of_phandle_args everywhere. This in itself isn't a big deal, but it makes some follow-on patches simpler. Signed-off-by: Grant Likely <grant.likely@linaro.org> Acked-by: Michal Simek <monstr@monstr.eu> Acked-by: Tony Lindgren <tony@atomide.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-09-15 23:39:11 +08:00
struct of_phandle_args *out_irq);
of/irq: simplify args to irq_create_of_mapping All the callers of irq_create_of_mapping() pass the contents of a struct of_phandle_args structure to the function. Since all the callers already have an of_phandle_args pointer, why not pass it directly to irq_create_of_mapping()? Signed-off-by: Grant Likely <grant.likely@linaro.org> Acked-by: Michal Simek <monstr@monstr.eu> Acked-by: Tony Lindgren <tony@atomide.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Russell King <linux@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-09-15 23:55:53 +08:00
extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data);
of/irq: merge irq mapping code Merge common irq mapping code between PowerPC and Microblaze. This patch merges of_irq_find_parent(), of_irq_map_raw() and of_irq_map_one(). The functions are dependent on one another, so all three are merged in a single patch. Other than cosmetic difference (ie. DBG() vs. pr_debug()), the implementations are identical. of_irq_to_resource() is also merged, but in this case the implementations are different. This patch drops the microblaze version and uses the powerpc implementation unchanged. The microblaze version essentially open-coded irq_of_parse_and_map() which it does not need to do. Therefore the powerpc version is safe to adopt. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> CC: Michal Simek <monstr@monstr.eu> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Stephen Rothwell <sfr@canb.auug.org.au>
2010-06-08 21:48:06 +08:00
extern int of_irq_to_resource(struct device_node *dev, int index,
struct resource *r);
of/irq: Move irq_of_parse_and_map() to common code Merge common code between PowerPC and Microblaze. SPARC implements irq_of_parse_and_map(), but the implementation is different, so it does not use this code. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Michal Simek <monstr@monstr.eu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Jeremy Kerr <jeremy.kerr@canonical.com>
2010-06-19 01:09:59 +08:00
of/irq: introduce of_irq_init of_irq_init will scan the devicetree for matching interrupt controller nodes. Then it calls an initialization function for each found controller in the proper order with parent nodes initialized before child nodes. Based on initial pseudo code from Grant Likely. Changes in v4: - Drop unnecessary empty list check - Be more verbose on errors - Simplify "if (!desc) WARN_ON(1)" to "if (WARN_ON(!desc))" Changes in v3: - add missing kfree's found by Jamie - Implement Grant's comments to simplify the init loop - fix function comments Changes in v2: - Complete re-write of list searching code from Grant Likely Signed-off-by: Rob Herring <rob.herring@calxeda.com> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Tested-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Grant Likely <grant.likely@secretlab.ca>
2011-09-21 04:13:50 +08:00
extern void of_irq_init(const struct of_device_id *matches);
irq: add irq_domain translation infrastructure This patch adds irq_domain infrastructure for translating from hardware irq numbers to linux irqs. This is particularly important for architectures adding device tree support because the current implementation (excluding PowerPC and SPARC) cannot handle translation for more than a single interrupt controller. irq_domain supports device tree translation for any number of interrupt controllers. This patch converts x86, Microblaze, ARM and MIPS to use irq_domain for device tree irq translation. x86 is untested beyond compiling it, irq_domain is enabled for MIPS and Microblaze, but the old behaviour is preserved until the core code is modified to actually register an irq_domain yet. On ARM it works and is required for much of the new ARM device tree board support. PowerPC has /not/ been converted to use this new infrastructure. It is still missing some features before it can replace the virq infrastructure already in powerpc (see documentation on irq_domain_map/unmap for details). Followup patches will add the missing pieces and migrate PowerPC to use irq_domain. SPARC has its own method of managing interrupts from the device tree and is unaffected by this change. Acked-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2011-07-26 17:19:06 +08:00
dt/irq: add empty of_irq_count for !OF_IRQ Add an empty version of of_irq_count for !OF_IRQ. This fixes build error on sparc in linux-next: drivers/gpio/gpio-bcm-kona.c:542: undefined reference to `of_irq_count' Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2013-11-08 02:13:27 +08:00
#ifdef CONFIG_OF_IRQ
extern int of_irq_count(struct device_node *dev);
of/irq: do irq resolution in platform_get_irq Currently we get the following kind of errors if we try to use interrupt phandles to irqchips that have not yet initialized: irq: no irq domain found for /ocp/pinmux@48002030 ! ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at drivers/of/platform.c:171 of_device_alloc+0x144/0x184() Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.12.0-00038-g42a9708 #1012 (show_stack+0x14/0x1c) (dump_stack+0x6c/0xa0) (warn_slowpath_common+0x64/0x84) (warn_slowpath_null+0x1c/0x24) (of_device_alloc+0x144/0x184) (of_platform_device_create_pdata+0x44/0x9c) (of_platform_bus_create+0xd0/0x170) (of_platform_bus_create+0x12c/0x170) (of_platform_populate+0x60/0x98) This is because we're wrongly trying to populate resources that are not yet available. It's perfectly valid to create irqchips dynamically, so let's fix up the issue by resolving the interrupt resources when platform_get_irq is called. And then we also need to accept the fact that some irqdomains do not exist that early on, and only get initialized later on. So we can make the current WARN_ON into just into a pr_debug(). We still attempt to populate irq resources when we create the devices. This allows current drivers which don't use platform_get_irq to continue to function. Once all drivers are fixed, this code can be removed. Suggested-by: Russell King <linux@arm.linux.org.uk> Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com> Tested-by: Tony Lindgren <tony@atomide.com> Cc: stable@vger.kernel.org # v3.10+ Signed-off-by: Grant Likely <grant.likely@linaro.org>
2014-04-24 06:57:41 +08:00
extern int of_irq_get(struct device_node *dev, int index);
of/irq: do irq resolution in platform_get_irq_byname() The commit 9ec36cafe43bf835f8f29273597a5b0cbc8267ef "of/irq: do irq resolution in platform_get_irq" from Rob Herring - moves resolving of the interrupt resources in platform_get_irq(). But this solution isn't complete because platform_get_irq_byname() need to be modified the same way. Hence, fix it by adding interrupt resolution code at the platform_get_irq_byname() function too. Cc: Russell King <linux@arm.linux.org.uk> Cc: Rob Herring <robh@kernel.org> Cc: Tony Lindgren <tony@atomide.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Thierry Reding <thierry.reding@gmail.com> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Grant Likely <grant.likely@linaro.org>
2014-05-20 18:42:02 +08:00
extern int of_irq_get_byname(struct device_node *dev, const char *name);
of: Add dummy of_irq_to_resource_table() for IRQ_OF=n If CONFIG_IRQ_OF=n: drivers/built-in.o: In function `of_device_alloc': (.text+0x72bce): undefined reference to `of_irq_to_resource_table' make: *** [vmlinux] Error 1 of_device_alloc() calls of_irq_to_resource_table() with nr_irqs = 0 due to of_irq_count() already being a dummy, so just add a dummy for of_irq_to_resource_table(), too. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Rob Herring <robh@kernel.org>
2015-04-05 22:59:25 +08:00
extern int of_irq_to_resource_table(struct device_node *dev,
struct resource *res, int nr_irqs);
of/irq: Add support code for multi-parent version of "msi-parent" Since 126b16e2ad98 ("Docs: dt: add generic MSI bindings"), the definition of "msi-parent" has evolved, while maintaining some degree of compatibility. It can now express multiple MSI controllers as parents, as well as some sideband data being communicated to the controller. This patch adds the parsing of the property, iterating over the multiple parents until a suitable irqdomain is found. It can also fallback to the original parsing if the old binding is detected. This support code gets used in the subsequent patches. Suggested-by: Robin Murphy <robin.murphy@arm.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2015-09-18 21:07:40 +08:00
extern struct irq_domain *of_msi_get_domain(struct device *dev,
struct device_node *np,
enum irq_domain_bus_token token);
of/irq: Use the msi-map property to provide device-specific MSI domain While msi-parent is used to point to the MSI controller that works for all the devices behind a root complex, it doesn't allow configurations where each individual device can be routed to a separate MSI controller. The msi-map property provides this flexibility (and much more), so let's add a utility function that parses it, and return the corresponding MSI domain. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2015-10-02 21:38:55 +08:00
extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev,
u32 rid);
of/irq: move of_msi_configure to the right guard and add a dummy of_msi_configure is part of of_irq.c, which is compiled in when OF_IRQ is enabled, not just OF. Also It is unconditionally called from of_platform_device_create_pdata, which does not depend on OF_IRQ, just OF_ADDRESS, so we need a dummy implementation in case of OF_ADDRESS=y but OF_IRQ=n. Fixes: c706c239 ("of/platform: Assign MSI domain to platform device") Signed-off-by: Jonas Gorski <jogo@openwrt.org> Signed-off-by: Rob Herring <robh@kernel.org>
2015-10-12 20:43:22 +08:00
extern void of_msi_configure(struct device *dev, struct device_node *np);
dt/irq: add empty of_irq_count for !OF_IRQ Add an empty version of of_irq_count for !OF_IRQ. This fixes build error on sparc in linux-next: drivers/gpio/gpio-bcm-kona.c:542: undefined reference to `of_irq_count' Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2013-11-08 02:13:27 +08:00
#else
static inline int of_irq_count(struct device_node *dev)
{
return 0;
}
of/irq: do irq resolution in platform_get_irq Currently we get the following kind of errors if we try to use interrupt phandles to irqchips that have not yet initialized: irq: no irq domain found for /ocp/pinmux@48002030 ! ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at drivers/of/platform.c:171 of_device_alloc+0x144/0x184() Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.12.0-00038-g42a9708 #1012 (show_stack+0x14/0x1c) (dump_stack+0x6c/0xa0) (warn_slowpath_common+0x64/0x84) (warn_slowpath_null+0x1c/0x24) (of_device_alloc+0x144/0x184) (of_platform_device_create_pdata+0x44/0x9c) (of_platform_bus_create+0xd0/0x170) (of_platform_bus_create+0x12c/0x170) (of_platform_populate+0x60/0x98) This is because we're wrongly trying to populate resources that are not yet available. It's perfectly valid to create irqchips dynamically, so let's fix up the issue by resolving the interrupt resources when platform_get_irq is called. And then we also need to accept the fact that some irqdomains do not exist that early on, and only get initialized later on. So we can make the current WARN_ON into just into a pr_debug(). We still attempt to populate irq resources when we create the devices. This allows current drivers which don't use platform_get_irq to continue to function. Once all drivers are fixed, this code can be removed. Suggested-by: Russell King <linux@arm.linux.org.uk> Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com> Tested-by: Tony Lindgren <tony@atomide.com> Cc: stable@vger.kernel.org # v3.10+ Signed-off-by: Grant Likely <grant.likely@linaro.org>
2014-04-24 06:57:41 +08:00
static inline int of_irq_get(struct device_node *dev, int index)
{
return 0;
}
of/irq: do irq resolution in platform_get_irq_byname() The commit 9ec36cafe43bf835f8f29273597a5b0cbc8267ef "of/irq: do irq resolution in platform_get_irq" from Rob Herring - moves resolving of the interrupt resources in platform_get_irq(). But this solution isn't complete because platform_get_irq_byname() need to be modified the same way. Hence, fix it by adding interrupt resolution code at the platform_get_irq_byname() function too. Cc: Russell King <linux@arm.linux.org.uk> Cc: Rob Herring <robh@kernel.org> Cc: Tony Lindgren <tony@atomide.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Thierry Reding <thierry.reding@gmail.com> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Grant Likely <grant.likely@linaro.org>
2014-05-20 18:42:02 +08:00
static inline int of_irq_get_byname(struct device_node *dev, const char *name)
{
return 0;
}
of: Add dummy of_irq_to_resource_table() for IRQ_OF=n If CONFIG_IRQ_OF=n: drivers/built-in.o: In function `of_device_alloc': (.text+0x72bce): undefined reference to `of_irq_to_resource_table' make: *** [vmlinux] Error 1 of_device_alloc() calls of_irq_to_resource_table() with nr_irqs = 0 due to of_irq_count() already being a dummy, so just add a dummy for of_irq_to_resource_table(), too. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Rob Herring <robh@kernel.org>
2015-04-05 22:59:25 +08:00
static inline int of_irq_to_resource_table(struct device_node *dev,
struct resource *res, int nr_irqs)
{
return 0;
}
of/irq: Add support code for multi-parent version of "msi-parent" Since 126b16e2ad98 ("Docs: dt: add generic MSI bindings"), the definition of "msi-parent" has evolved, while maintaining some degree of compatibility. It can now express multiple MSI controllers as parents, as well as some sideband data being communicated to the controller. This patch adds the parsing of the property, iterating over the multiple parents until a suitable irqdomain is found. It can also fallback to the original parsing if the old binding is detected. This support code gets used in the subsequent patches. Suggested-by: Robin Murphy <robin.murphy@arm.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2015-09-18 21:07:40 +08:00
static inline struct irq_domain *of_msi_get_domain(struct device *dev,
struct device_node *np,
enum irq_domain_bus_token token)
{
return NULL;
}
of/irq: Use the msi-map property to provide device-specific MSI domain While msi-parent is used to point to the MSI controller that works for all the devices behind a root complex, it doesn't allow configurations where each individual device can be routed to a separate MSI controller. The msi-map property provides this flexibility (and much more), so let's add a utility function that parses it, and return the corresponding MSI domain. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2015-10-02 21:38:55 +08:00
static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev,
u32 rid)
{
return NULL;
}
of/irq: move of_msi_configure to the right guard and add a dummy of_msi_configure is part of of_irq.c, which is compiled in when OF_IRQ is enabled, not just OF. Also It is unconditionally called from of_platform_device_create_pdata, which does not depend on OF_IRQ, just OF_ADDRESS, so we need a dummy implementation in case of OF_ADDRESS=y but OF_IRQ=n. Fixes: c706c239 ("of/platform: Assign MSI domain to platform device") Signed-off-by: Jonas Gorski <jogo@openwrt.org> Signed-off-by: Rob Herring <robh@kernel.org>
2015-10-12 20:43:22 +08:00
static inline void of_msi_configure(struct device *dev, struct device_node *np)
{
}
dt/irq: add empty of_irq_count for !OF_IRQ Add an empty version of of_irq_count for !OF_IRQ. This fixes build error on sparc in linux-next: drivers/gpio/gpio-bcm-kona.c:542: undefined reference to `of_irq_count' Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2013-11-08 02:13:27 +08:00
#endif
of/irq: fix guards for irq_of_parse_and_map prototype Since OF is now a userselectable config symbol, having OF=y but OF_IRQ=n is a valid combination for non-OF platforms, and OF=y does not guarantee anymore that OF_IRQ is enabled (or we are building for SPARC). Fixes the following build error with OF=y, IRQ_DOMAIN=n and SPI=y: drivers/built-in.o: In function `spi_register_master': (.text+0xc3ae): undefined reference to `irq_of_parse_and_map' Makefile:935: recipe for target 'vmlinux' failed make: *** [vmlinux] Error 1 Signed-off-by: Jonas Gorski <jogo@openwrt.org> Signed-off-by: Rob Herring <robh@kernel.org>
2015-10-12 20:43:24 +08:00
#if defined(CONFIG_OF_IRQ) || defined(CONFIG_SPARC)
of: clean-up ifdefs in of_irq.h Much of of_irq.h is needlessly ifdef'ed. Clean this up and minimize the amount ifdef'ed code. This fixes some build warnings when CONFIG_OF is not enabled (seen on i386 and x86_64): include/linux/of_irq.h:82:7: warning: 'struct device_node' declared inside parameter list [enabled by default] include/linux/of_irq.h:82:7: warning: its scope is only this definition or declaration, which is probably not what you want [enabled by default] include/linux/of_irq.h:87:47: warning: 'struct device_node' declared inside parameter list [enabled by default] Compile tested on i386, sparc and arm. Reported-by: Randy Dunlap <rdunlap@infradead.org> Cc: Grant Likely <grant.likely@linaro.org> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2013-09-04 23:52:57 +08:00
/*
* irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC
* implements it differently. However, the prototype is the same for all,
* so declare it here regardless of the CONFIG_OF_IRQ setting.
*/
extern unsigned int irq_of_parse_and_map(struct device_node *node, int index);
of/irq: Add new function of_msi_map_rid() The device tree property "msi-map" specifies how to create the PCI requester id used in some MSI controllers. Add a new function of_msi_map_rid() that finds the msi-map property and applies its translation to a given requester id. Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2015-10-09 06:10:48 +08:00
u32 of_msi_map_rid(struct device *dev, struct device_node *msi_np, u32 rid_in);
of/irq: add empty irq_of_parse_and_map() for non-dt builds Add a empty irq_of_parse_and_map() function that returns 0 for non-dt builds and avoid having #ifdef CONFIG_OF around all calls to irq_of_parse_and_map(). In addition to that, the irq_of_parse_and_map() function declaration is made available only if CONFIG_OF_IRQ is defined, which is the same config option that makes the irq_of_parse_and_map() function definition available. While at it, fix a typo as well. Changes since v1: - Moved irq_of_parse_and_map() function declaration under CONFIG_OF_IRQ. - Fix a minor typo in comments. Suggested-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Rob Herring <rob.herring@calxeda.com> [grant.likely: fix bug causing SPARC to break] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-25 23:02:49 +08:00
of/irq: fix guards for irq_of_parse_and_map prototype Since OF is now a userselectable config symbol, having OF=y but OF_IRQ=n is a valid combination for non-OF platforms, and OF=y does not guarantee anymore that OF_IRQ is enabled (or we are building for SPARC). Fixes the following build error with OF=y, IRQ_DOMAIN=n and SPI=y: drivers/built-in.o: In function `spi_register_master': (.text+0xc3ae): undefined reference to `irq_of_parse_and_map' Makefile:935: recipe for target 'vmlinux' failed make: *** [vmlinux] Error 1 Signed-off-by: Jonas Gorski <jogo@openwrt.org> Signed-off-by: Rob Herring <robh@kernel.org>
2015-10-12 20:43:24 +08:00
#else /* !CONFIG_OF && !CONFIG_SPARC */
of/irq: add empty irq_of_parse_and_map() for non-dt builds Add a empty irq_of_parse_and_map() function that returns 0 for non-dt builds and avoid having #ifdef CONFIG_OF around all calls to irq_of_parse_and_map(). In addition to that, the irq_of_parse_and_map() function declaration is made available only if CONFIG_OF_IRQ is defined, which is the same config option that makes the irq_of_parse_and_map() function definition available. While at it, fix a typo as well. Changes since v1: - Moved irq_of_parse_and_map() function declaration under CONFIG_OF_IRQ. - Fix a minor typo in comments. Suggested-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Rob Herring <rob.herring@calxeda.com> [grant.likely: fix bug causing SPARC to break] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-25 23:02:49 +08:00
static inline unsigned int irq_of_parse_and_map(struct device_node *dev,
int index)
{
return 0;
}
of/irq: Create stub for of_irq_find_parent when !CONFIG_OF of_irq_find_parent is a handy function to use outside the confines of the Open Firmware subsystem. One such use-case is when the IRQ Domain wishes to find an IRQ domain for a given device node. Currently it can not take any notice of the 'interrupt-parent' property. Instead it just uses the first IRQ controller as it climbs the Device Tree. If we were to use this as a precursor the resultant controller is more likely to be correct. Acked-by: Rob Herring <rob.herring@calxeda.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2012-08-08 20:44:59 +08:00
of/irq: Add new function of_msi_map_rid() The device tree property "msi-map" specifies how to create the PCI requester id used in some MSI controllers. Add a new function of_msi_map_rid() that finds the msi-map property and applies its translation to a given requester id. Reviewed-by: Marc Zyngier <marc.zyngier@arm.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: David Daney <david.daney@cavium.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2015-10-09 06:10:48 +08:00
static inline u32 of_msi_map_rid(struct device *dev,
struct device_node *msi_np, u32 rid_in)
{
return rid_in;
}
of/irq: add empty irq_of_parse_and_map() for non-dt builds Add a empty irq_of_parse_and_map() function that returns 0 for non-dt builds and avoid having #ifdef CONFIG_OF around all calls to irq_of_parse_and_map(). In addition to that, the irq_of_parse_and_map() function declaration is made available only if CONFIG_OF_IRQ is defined, which is the same config option that makes the irq_of_parse_and_map() function definition available. While at it, fix a typo as well. Changes since v1: - Moved irq_of_parse_and_map() function declaration under CONFIG_OF_IRQ. - Fix a minor typo in comments. Suggested-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Thomas Abraham <thomas.abraham@linaro.org> Acked-by: Rob Herring <rob.herring@calxeda.com> [grant.likely: fix bug causing SPARC to break] Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
2012-03-25 23:02:49 +08:00
#endif /* !CONFIG_OF */
of/irq: Move irq_of_parse_and_map() to common code Merge common code between PowerPC and Microblaze. SPARC implements irq_of_parse_and_map(), but the implementation is different, so it does not use this code. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Michal Simek <monstr@monstr.eu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Jeremy Kerr <jeremy.kerr@canonical.com>
2010-06-19 01:09:59 +08:00
#endif /* __OF_IRQ_H */