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2024-08-23irqchip/loongarch-avec: Add AVEC irqchip supportTianyang Zhang11-2/+464
Introduce the advanced extended interrupt controllers (AVECINTC). This feature will allow each core to have 256 independent interrupt vectors and MSI interrupts can be independently routed to any vector on any CPU. The whole topology of irqchips in LoongArch machines looks like this if AVECINTC is supported: +-----+ +-----------------------+ +-------+ | IPI | --> | CPUINTC | <-- | Timer | +-----+ +-----------------------+ +-------+ ^ ^ ^ | | | +---------+ +----------+ +---------+ +-------+ | EIOINTC | | AVECINTC | | LIOINTC | <-- | UARTs | +---------+ +----------+ +---------+ +-------+ ^ ^ | | +---------+ +---------+ | PCH-PIC | | PCH-MSI | +---------+ +---------+ ^ ^ ^ | | | +---------+ +---------+ +---------+ | Devices | | PCH-LPC | | Devices | +---------+ +---------+ +---------+ ^ | +---------+ | Devices | +---------+ Co-developed-by: Jianmin Lv <lvjianmin@loongson.cn> Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn> Co-developed-by: Liupu Wang <wangliupu@loongson.cn> Signed-off-by: Liupu Wang <wangliupu@loongson.cn> Co-developed-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Tianyang Zhang <zhangtianyang@loongson.cn> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240823104337.25577-2-zhangtianyang@loongson.cn
2024-08-23irqchip/loongson-pch-msi: Prepare get_pch_msi_handle() for AVECINTCTianyang Zhang1-5/+5
On Loongson-3C6000 and higher systems with AVECINTC irqchip, there may be multiple PCI segments, but only one PCH-MSI irq domain. In this case, let get_pch_msi_handle() return the first domain handle. Co-developed-by: Jianmin Lv <lvjianmin@loongson.cn> Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn> Co-developed-by: Liupu Wang <wangliupu@loongson.cn> Signed-off-by: Liupu Wang <wangliupu@loongson.cn> Co-developed-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Tianyang Zhang <zhangtianyang@loongson.cn> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240823104337.25577-1-zhangtianyang@loongson.cn
2024-08-23irqchip/loongson-eiointc: Rename CPUHP_AP_IRQ_LOONGARCH_STARTINGHuacai Chen2-3/+3
Rename CPUHP_AP_IRQ_LOONGARCH_STARTING to CPUHP_AP_IRQ_EIOINTC_STARTING because the upcoming AVECINTC irqchip driver will introduce a new state and so both are clearly identifiable. Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Tianyang Zhang <zhangtianyang@loongson.cn> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240823103936.25092-3-zhangtianyang@loongson.cn
2024-08-23LoongArch: Architectural preparation for AVEC irqchipHuacai Chen8-8/+48
Add architectural preparation for AVEC irqchip, including: 1. CPUCFG feature bits definition for AVEC; 2. Detection of AVEC irqchip in cpu_probe(); 3. New IPI type definition (IPI_CLEAR_VECTOR) for AVEC; 4. Provide arch_probe_nr_irqs() for large NR_IRQS; 5. Other related changes about the number of interrupts. Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Tianyang Zhang <zhangtianyang@loongson.cn> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240823103936.25092-2-zhangtianyang@loongson.cn
2024-08-23LoongArch: Move irqchip function prototypes to irq-loongson.hHuacai Chen9-14/+38
Some irqchip functions are only for internal use by irqchip drivers, so move their prototypes from asm/irq.h to drivers/irqchip/irq-loongson.h. All related driver files include the new irq-loongson.h. Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Tianyang Zhang <zhangtianyang@loongson.cn> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240823103936.25092-1-zhangtianyang@loongson.cn
2024-08-20irqchip/loongson-pch-msi: Switch to MSI parent domainsHuacai Chen2-35/+24
Remove the global PCI/MSI irqdomain implementation and provide the required MSI parent functionality by filling in msi_parent_ops, so the PCI/MSI code can detect the new parent and setup per-device MSI domains. Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Tianyang Zhang <zhangtianyang@loongson.cn> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240815112608.26925-2-zhangtianyang@loongson.cn
2024-08-20softirq: Remove unused 'action' parameter from action callbackCaleb Sander Mateos10-19/+18
When soft interrupt actions are called, they are passed a pointer to the struct softirq action which contains the action's function pointer. This pointer isn't useful, as the action callback already knows what function it is. And since each callback handles a specific soft interrupt, the callback also knows which soft interrupt number is running. No soft interrupt action callback actually uses this parameter, so remove it from the function pointer signature. This clarifies that soft interrupt actions are global routines and makes it slightly cheaper to call them. Signed-off-by: Caleb Sander Mateos <csander@purestorage.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jens Axboe <axboe@kernel.dk> Link: https://lore.kernel.org/all/20240815171549.3260003-1-csander@purestorage.com
2024-08-20irqdomain: Always associate interrupts for legacy domainsMatti Vaittinen1-6/+10
The unification of irq_domain_create_legacy() missed the fact that interrupts must be associated even when the Linux interrupt number provided in the first_irq argument is 0. This breaks all call sites of irq_domain_create_legacy() which supply 0 as the first_irq argument. Enforce the association for legacy domains in __irq_domain_instantiate() to cure this. [ tglx: Massaged it slightly. ] Fixes: 70114e7f7585 ("irqdomain: Simplify simple and legacy domain creation") Reported-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Signed-off-by Matti Vaittinen <mazziesaccount@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Link: https://lore.kernel.org/all/c3379142-10bc-4f14-b8ac-a46927aeac38@gmail.com
2024-08-13irqdomain: Remove stray '-' in the domain nameAndy Shevchenko1-2/+2
When the domain suffix is not supplied alloc_fwnode_name() unconditionally adds a separator. Fix the format strings to get rid of the stray '-' separator. Fixes: 1e7c05292531 ("irqdomain: Allow giving name suffix for domain") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240812193101.1266625-3-andriy.shevchenko@linux.intel.com
2024-08-13irqdomain: Clarify checks for bus_tokenAndy Shevchenko1-8/+14
The code uses if (bus_token) and if (bus_token == DOMAIN_BUS_ANY). Since bus_token is an enum, the latter is more robust against changes. Convert all !bus_token checks to explicitely check for DOMAIN_BUS_ANY. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240812193101.1266625-2-andriy.shevchenko@linux.intel.com
2024-08-10Merge tag 'irq-domain-24-08-09' into irq/coreThomas Gleixner2-85/+121
Merge the irqdomain changes which are required for regmap to apply depending patches and therefore tagged.
2024-08-09irqdomain: Allow giving name suffix for domainMatti Vaittinen2-7/+26
Devices can provide multiple interrupt lines. One reason for this is that a device has multiple subfunctions, each providing its own interrupt line. Another reason is that a device can be designed to be used (also) on a system where some of the interrupts can be routed to another processor. A line often further acts as a demultiplex for specific interrupts and has it's respective set of interrupt (status, mask, ack, ...) registers. Regmap supports the handling of these registers and demultiplexing interrupts, but the interrupt domain code ends up assigning the same name for the per interrupt line domains. This causes a naming collision in the debugFS code and leads to confusion, as /proc/interrupts shows two separate interrupts with the same domain name and hardware interrupt number. Instead of adding a workaround in regmap or driver code, allow giving a name suffix for the domain name when the domain is created. Add a name_suffix field in the irq_domain_info structure and make irq_domain_instantiate() use this suffix if it is given when a domain is created. [ tglx: Adopt it to the cleanup patch and fixup the invalid NULL return ] Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/871q2yvk5x.ffs@tglx
2024-08-09irqdomain: Cleanup domain name allocationThomas Gleixner1-51/+55
irq_domain_set_name() is truly unreadable gunk. Clean it up before adding more. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Matti Vaittinen <mazziesaccount@gmail.com> Link: https://lore.kernel.org/all/874j7uvkbm.ffs@tglx
2024-08-09irqdomain: Simplify simple and legacy domain creationMatti Vaittinen2-33/+46
irq_domain_create_simple() and irq_domain_create_legacy() use __irq_domain_instantiate(), but have extra handling of allocating interrupt descriptors and associating interrupts in them. Some of that is duplicated. There are also call sites which have conditonals to invoke different interrupt domain creator functions, where one of them is usually irq_domain_create_legacy(). Alternatively they associate the interrupts for the legacy case after creating the domain. Moving the extra logic of irq_domain_create_simple()/legacy() into __irq_domain_instantiate() allows to consolidate that. Introduce hwirq_base and virq_base members in the irq_domain_info structure, which allows to transport the required information and add the conditional interrupt descriptor allocation and interrupt association into __irq_domain_instantiate(). This reduces irq_domain_create_legacy() and irq_domain_create_simple() to trivial wrappers which fill in the info structure and allows call sites which must support the legacy case along with more modern mechanism to select the domain type via the parameters of the info struct. [ tglx: Massaged change log ] Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/32d07bd79eb2b5416e24da9e9e8fe5955423dcf9.1723120028.git.mazziesaccount@gmail.com
2024-08-08genirq: Remove irq_chip_regs:: PolarityJiri Slaby (SUSE)1-2/+0
The polarity member of struct irq_chip_regs is unused. Remove it along with its kernel-doc. Found by https://github.com/jirislaby/clang-struct. Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240808104118.430670-3-jirislaby@kernel.org
2024-08-08genirq: Remove unused irq_chip_generic:: {type,polarity}_cacheJiri Slaby (SUSE)1-4/+0
The type_cache and polarity_cache members of struct irq_chip_generic are unused. Remove them both along with their kernel-doc. Found by https://github.com/jirislaby/clang-struct. Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240808104118.430670-2-jirislaby@kernel.org
2024-08-08genirq/irq_sim: Remove unused irq_sim_work_ctx:: Irq_baseJiri Slaby (SUSE)1-1/+0
Since commit 337cbeb2c13e ("genirq/irq_sim: Simplify the API"), irq_sim_work_ctx::irq_base is unused. Drop it. Found by https://github.com/jirislaby/clang-struct. Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org> Link: https://lore.kernel.org/all/20240808104118.430670-1-jirislaby@kernel.org
2024-08-08irqchip/mbigen: Simplify code logic with for_each_child_of_node_scoped()Zhang Zekun1-17/+7
for_each_child_of_node_scoped() handles the device_node automaticlly, so switching over to it removes the device node cleanups and allows to return directly from the loop. Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240808031552.3156-1-zhangzekun11@huawei.com
2024-08-08irqchip/armada-370-xp: Use mpic_is_ipi_available() in mpic_of_init()Marek Behún1-1/+1
mpic_of_init() contains the last case where the open coded IPI support condition needs to be replaced with mpic_is_ipi_available() to keep the code consistent. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2024-08-08irqchip/armada-370-xp: Allow mapping only per-CPU interruptsMarek Behún1-6/+13
On platforms where MPIC is not the top-level interrupt controller the driver currently only supports handling of the per-CPU interrupts (the first 29 interrupts). This is obvious from the code of mpic_handle_cascade_irq(), which reads only one cause register. Bound the number of available interrupts in the interrupt domain to 29 for these platforms. The corresponding device-trees refer only to per-CPU interrupts via MPIC, the other interrupts are referred to via GIC. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2024-08-08irqchip/armada-370-xp: Iterate only valid bits of the per-CPU interrupt ↵Marek Behún1-1/+1
cause register Use MPIC_PER_CPU_IRQS_NR (29) bound instead of BITS_PER_LONG (32) when iterating the bits of the per-CPU interrupt cause register, since there are only 29 per-CPU interrupts. The top 3 bits are always zero anyway. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2024-08-08irqchip/armada-370-xp: Fix reenabling last per-CPU interruptMarek Behún1-3/+3
The number of per-CPU interrupts is 29 (0 to 28). This is described by the constant MPIC_MAX_PER_CPU_IRQS, set to 28 (the maximum per-CPU interrupt). Commit 0fa4ce746d1d ("irqchip/armada-370-xp: Re-enable per-CPU interrupts at resume time") used the constant incorrectly in the for-loop, it used the operator < instead of <=, causing it to iterate only the first 28 interrupts (0 to 27), ignoring the last, 28th, per-CPU interrupt. To avoid this kind of confusions, fix this issue by renaming the constant to MPIC_PER_CPU_IRQS_NR and set it to 29, the number of per-CPU IRQs. Update its use in mpic_is_percpu_irq() accordingly. Fixes: 0fa4ce746d1d ("irqchip/armada-370-xp: Re-enable per-CPU interrupts at resume time") Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: <stable+noautosel@kernel.org> # The 29th interrupt is not used in any device-tree
2024-08-08irqchip/armada-370-xp: Dynamically allocate the driver private structureMarek Behún1-5/+11
Dynamically allocate the driver private structure. This concludes the conversion of this driver to modern style. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2024-08-08irqchip/armada-370-xp: Pass around the driver private structureMarek Behún1-45/+70
In continuation of converting the driver to modern style, drop the global pointer to the driver private structure and instead pass it around the functions and callbacks, wherever possible. (There are 3 cases where it is not possible: mpic_cascaded_starting_cpu() and the syscore operations mpic_suspend() and mpic_resume()). Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2024-08-08irqchip/armada-370-xp: Put MSI doorbell limits into the mpic structureMarek Behún1-22/+22
Put the MSI doorbell limits msi_doorbell_start, msi_doorbell_size and msi_doorbell_mask into the driver private structure and get rid of the corresponding functions. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2024-08-08irqchip/armada-370-xp: Put static variables into driver private structureMarek Behún1-101/+122
In preparation for converting the driver to modern style put all the interrupt controller private static variables into driver private structure. Access to these variables changes as: main_int_base mpic->base per_cpu_int_base mpic->per_cpu mpic_domain mpic->domain parent_irq mpic->parent_irq ... Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2024-08-08irqchip/armada-370-xp: Put __init attribute after return type in mpic_ipi_init()Marek Behún1-1/+1
For consistency with the rest of the driver, put the __init attribute after the return type of the mpic_ipi_init() function. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2024-08-08irqchip/armada-370-xp: Add the __init attribute to mpic_msi_init()Marek Behún1-1/+1
Add the __init attribute to the mpic_msi_init() function. It is only called from the device initializer, and so can be dropped after boot is complete. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2024-08-08irqchip/armada-370-xp: Drop msi_doorbell_end()Marek Behún1-7/+0
Drop the msi_doorbell_end() function and related constants, it is not used anymore. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2024-08-08irqchip/armada-370-xp: Drop IPI_DOORBELL_START and rename IPI_DOORBELL_ENDMarek Behún1-7/+6
Drop IPI_DOORBELL_START since it is not used and rename IPI_DOORBELL_END to IPI_DOORBELL_NR. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2024-08-02irqchip/gic-v4.1: Replace bare number with ID_AA64PFR0_EL1_GIC_V4P1Anshuman Khandual1-1/+1
Use ID_AA64PFR0_EL1_GIC_V4P1 instead of '3' in gic_cpuif_has_vsgi() to check for the GIC version. Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Zenghui Yu <yuzenghui@huawei.com> Acked-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/all/20240802085601.1824057-1-anshuman.khandual@arm.com
2024-07-30irqchip: Remove asmlinkage for handlers registered with set_handle_irq()Jinjie Ruan10-16/+10
All architectures with use set_handle_irq() to set the root chip interrupt handler call that handler from C code, so there's no need for these handlers to be marked asmlinkage. Remove asmlinkage for all handlers registered with set_handle_irq(). Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Mark Rutland <mark.rutland@arm.com> Link: https://lore.kernel.org/all/20240729112606.1581732-1-ruanjinjie@huawei.com
2024-07-30irqchip/armada-370-xp: Print error and return error code on initialization ↵Marek Behún1-6/+22
failure Print error and return error code on main / IPI / MSI domain initialization failure. Use WARN_ON() instead of BUG_ON(). Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240711160907.31012-11-kabel@kernel.org
2024-07-30irqchip/armada-370-xp: Refactor initial memory regions mappingMarek Behún1-19/+41
Refactor the initial memory regions mapping: - put into its own function - return error numbers on failure - use WARN_ON() instead of BUG_ON() Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240711160907.31012-10-kabel@kernel.org
2024-07-30irqchip/armada-370-xp: Use u32 type instead of unsigned long where possiebleMarek Behún1-3/+4
For consistency across the driver, use the u32 type instead of unsigned long for holding register values and return value of cpu_logical_map(). One exception is when the variable is referenced for passing into for_each_set_bit(), in which case it has to be unsigned long. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240711160907.31012-9-kabel@kernel.org
2024-07-30irqchip/armada-370-xp: Rename variable for consistencyMarek Behún1-3/+3
Rename the variable holding the cause register to "cause" in mpic_handle_cascade_irq(). Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240711160907.31012-8-kabel@kernel.org
2024-07-30irqchip/armada-370-xp: Drop redundant continueMarek Behún1-3/+1
Drop redundant continue from mpic_handle_irq(). Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240711160907.31012-7-kabel@kernel.org
2024-07-30irqchip/armada-370-xp: Simplify mpic_reenable_percpu() and mpic_resume()Marek Behún1-9/+3
Refactor the mpic_reenable_percpu() and mpic_resume() functions to make them a little bit simpler. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240711160907.31012-5-kabel@kernel.org
2024-07-30irqchip/armada-370-xp: Use consistent name for struct irq_data variablesMarek Behún1-13/+13
Always use variable name "d" for struct irq_data *, for consistency. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240711160907.31012-4-kabel@kernel.org
2024-07-30irqchip/armada-370-xp: Use consistent types when iterating interruptsMarek Behún1-8/+10
When iterating, use either the irq_hw_number_t type or the unsigned int type for the iterator variable, depending on whether the variable represents HW IRQ number or whether it is added to a IRQ number. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240711160907.31012-3-kabel@kernel.org
2024-07-30irqchip/armada-370-xp: Use consistent variable names for hwirqsMarek Behún1-28/+28
Use consistent variable names for hwirqs: when iterating, use "i", otherwise use "hwirq". Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20240711160907.31012-2-kabel@kernel.org
2024-07-30irqchip/armada-370-xp: Refactor handling IPI interruptsMarek Behún1-12/+18
Refactor the handling of IPI interrupts - put into own function mpic_handle_ipi_irq(), similar to mpic_handle_msi_irq() - rename the variable holding the doorbell cause register to "cause" - retype and rename the variable holding the IPI HW IRQ number to "irq_hw_number_t i" Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/all/20240711115748.30268-11-kabel@kernel.org
2024-07-30irqchip/armada-370-xp: Refactor mpic_handle_msi_irq() codeMarek Behún1-20/+12
Refactor the mpic_handle_msi_irq() function to make it simpler: - drop the function arguments, they are not needed - rename the variable holding the doorbell cause register to "cause" - rename the iterating variable to "i" - use for_each_set_bit() (requires retyping "cause" to unsigned long) Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/all/20240711115748.30268-10-kabel@kernel.org
2024-07-30irqchip/armada-370-xp: Use FIELD_GET() and named register constantMarek Behún1-5/+6
Use FIELD_GET() and named register mask constant when reading the number of supported interrupts / current interrupt. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/all/20240711115748.30268-9-kabel@kernel.org
2024-07-30irqchip/armada-370-xp: Don't read number of supported interrupts multiple timesMarek Behún1-10/+3
Use mpic_domain::hwirq_max at runtime instead of reading the same value over and over from the MPIC_INT_CONTROL register. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/all/20240711115748.30268-8-kabel@kernel.org
2024-07-30irqchip/armada-370-xp: Change symbol prefixes to mpicMarek Behún1-163/+142
Change symbol prefixes from armada_370_xp_ or others to mpic_. The rationale is that it is shorter and more generic (this controller is called MPIC and is also used on Armada 38x and 39x). Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/all/20240711115748.30268-7-kabel@kernel.org
2024-07-30irqchip/armada-370-xp: Improve indentationMarek Behún1-30/+26
Add some blank lines and other indentation improvements. Checkpatch now stops complaining. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/all/20240711115748.30268-6-kabel@kernel.org
2024-07-30irqchip/armada-370-xp: Simplify ipi_resume() codeMarek Behún1-8/+6
Refactor the ipi_resume() function to drop one indentation level. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/all/20240711115748.30268-5-kabel@kernel.org
2024-07-30irqchip/armada-370-xp: Use !virq instead of virq == 0 in conditionMarek Behún1-2/+2
Use !virq instead of virq == 0 when checking for availability of the virq. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/all/20240711115748.30268-4-kabel@kernel.org
2024-07-30irqchip/armada-370-xp: Use unsigned int type for virqsMarek Behún1-4/+4
The return type of irq_find_mapping() and irq_linear_revmap() is unsigned int. Use the unsigned int type for the variables storing the return value. Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> Link: https://lore.kernel.org/all/20240711115748.30268-3-kabel@kernel.org
generated by cgit v1.2.3 (git 2.39.0) at 2025-09-24 00:36:13 +0300