| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/mailbox/ |
| D | xlnx,zynqmp-ipi-mailbox.txt | 1 Xilinx IPI Mailbox Controller
4 The Xilinx IPI(Inter Processor Interrupt) mailbox controller is to manage
5 messaging between two Xilinx Zynq UltraScale+ MPSoC IPI agents. Each IPI
9 | Xilinx ZynqMP IPI Controller |
21 Hardware | | IPI Agent | | IPI Buffers | |
26 | Xilinx IPI Agent Block |
34 IPI agent node:
35 - compatible: Shall be: "xlnx,zynqmp-ipi-mailbox"
39 - xlnx,ipi-id: local Xilinx IPI agent ID
40 - #address-cells: number of address cells of internal IPI mailbox nodes
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| /kernel/linux/linux-5.10/arch/loongarch/kvm/intc/ |
| D | ls3a_ipi.c | 19 struct ls3a_kvm_ipi *ipi = ls3a_ipi_irqchip(kvm); in kvm_helper_send_ipi() local
20 gipiState *s = &(ipi->ls3a_gipistate); in kvm_helper_send_ipi()
26 ls3a_gipi_lock(ipi, flags); in kvm_helper_send_ipi()
34 ls3a_gipi_unlock(ipi, flags); in kvm_helper_send_ipi()
39 static int ls3a_gipi_writel(struct ls3a_kvm_ipi *ipi, gpa_t addr, in ls3a_gipi_writel() argument
44 gipiState *s = &(ipi->ls3a_gipistate); in ls3a_gipi_writel()
50 kvm = ipi->kvm; in ls3a_gipi_writel()
93 kvm_err("Failed lower ipi irq target cpu:%d\n", cpu); in ls3a_gipi_writel()
123 static uint64_t ls3a_gipi_readl(struct ls3a_kvm_ipi *ipi, in ls3a_gipi_readl() argument
129 gipiState *s = &(ipi->ls3a_gipistate); in ls3a_gipi_readl()
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| /kernel/linux/linux-5.10/drivers/mailbox/ |
| D | zynqmp-ipi-mailbox.c | 3 * Xilinx Inter Processor Interrupt(IPI) Mailbox Driver
15 #include <linux/mailbox/zynqmp-ipi-message.h>
23 /* IPI agent ID any */
26 /* indicate if ZynqMP IPI mailbox driver uses SMC calls or HVC calls */
30 /* Default IPI SMC function IDs */
39 /* IPI SMC Macros */
49 /* IPI mailbox status */
54 #define IPI_MB_CHNL_TX 0 /* IPI mailbox TX channel */
55 #define IPI_MB_CHNL_RX 1 /* IPI mailbox RX channel */
58 * struct zynqmp_ipi_mchan - Description of a Xilinx ZynqMP IPI mailbox channel
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| /kernel/linux/linux-6.6/drivers/mailbox/ |
| D | zynqmp-ipi-mailbox.c | 3 * Xilinx Inter Processor Interrupt(IPI) Mailbox Driver
15 #include <linux/mailbox/zynqmp-ipi-message.h>
21 /* IPI agent ID any */
24 /* indicate if ZynqMP IPI mailbox driver uses SMC calls or HVC calls */
28 /* Default IPI SMC function IDs */
37 /* IPI SMC Macros */
47 /* IPI mailbox status */
52 #define IPI_MB_CHNL_TX 0 /* IPI mailbox TX channel */
53 #define IPI_MB_CHNL_RX 1 /* IPI mailbox RX channel */
56 * struct zynqmp_ipi_mchan - Description of a Xilinx ZynqMP IPI mailbox channel
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| /kernel/linux/linux-6.6/Documentation/devicetree/bindings/mailbox/ |
| D | xlnx,zynqmp-ipi-mailbox.yaml | 4 $id: http://devicetree.org/schemas/mailbox/xlnx,zynqmp-ipi-mailbox.yaml#
7 title: Xilinx IPI(Inter Processor Interrupt) mailbox controller
10 The Xilinx IPI(Inter Processor Interrupt) mailbox controller is to manage
11 messaging between two Xilinx Zynq UltraScale+ MPSoC IPI agents. Each IPI
15 | Xilinx ZynqMP IPI Controller |
27 Hardware | | IPI Agent | | IPI Buffers | |
32 | Xilinx IPI Agent Block |
40 const: xlnx,zynqmp-ipi-mailbox
61 xlnx,ipi-id:
63 Remote Xilinx IPI agent ID of which the mailbox is connected to.
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| /kernel/linux/linux-6.6/arch/mips/kvm/ |
| D | loongson_ipi.c | 3 * Loongson-3 Virtual IPI interrupt support.
51 static int loongson_vipi_read(struct loongson_kvm_ipi *ipi, in loongson_vipi_read() argument
59 struct ipi_state *s = &(ipi->ipistate[id]); in loongson_vipi_read()
96 static int loongson_vipi_write(struct loongson_kvm_ipi *ipi, in loongson_vipi_write() argument
104 struct kvm *kvm = ipi->kvm; in loongson_vipi_write()
106 struct ipi_state *s = &(ipi->ipistate[id]); in loongson_vipi_write()
155 struct loongson_kvm_ipi *ipi; in kvm_ipi_read() local
159 ipi = ipi_device->ipi; in kvm_ipi_read()
161 spin_lock_irqsave(&ipi->lock, flags); in kvm_ipi_read()
162 loongson_vipi_read(ipi, addr, len, val); in kvm_ipi_read()
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| /kernel/linux/linux-5.10/arch/mips/kvm/ |
| D | loongson_ipi.c | 3 * Loongson-3 Virtual IPI interrupt support.
51 static int loongson_vipi_read(struct loongson_kvm_ipi *ipi, in loongson_vipi_read() argument
59 struct ipi_state *s = &(ipi->ipistate[id]); in loongson_vipi_read()
96 static int loongson_vipi_write(struct loongson_kvm_ipi *ipi, in loongson_vipi_write() argument
104 struct kvm *kvm = ipi->kvm; in loongson_vipi_write()
106 struct ipi_state *s = &(ipi->ipistate[id]); in loongson_vipi_write()
155 struct loongson_kvm_ipi *ipi; in kvm_ipi_read() local
159 ipi = ipi_device->ipi; in kvm_ipi_read()
161 spin_lock_irqsave(&ipi->lock, flags); in kvm_ipi_read()
162 loongson_vipi_read(ipi, addr, len, val); in kvm_ipi_read()
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| /kernel/linux/linux-5.10/drivers/remoteproc/ |
| D | mtk_scp_ipi.c | 17 * scp_ipi_register() - register an ipi function
20 * @id: IPI ID
21 * @handler: IPI handler
22 * @priv: private data for IPI handler
24 * Register an ipi function to receive ipi interrupt from SCP.
26 * Returns 0 if ipi registers successfully, -error on error.
49 * scp_ipi_unregister() - unregister an ipi function
52 * @id: IPI ID
54 * Unregister an ipi function to receive ipi interrupt from SCP.
108 * scp_ipi_lock() - Lock before operations of an IPI ID
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| /kernel/linux/linux-6.6/drivers/remoteproc/ |
| D | mtk_scp_ipi.c | 21 * scp_ipi_register() - register an ipi function
24 * @id: IPI ID
25 * @handler: IPI handler
26 * @priv: private data for IPI handler
28 * Register an ipi function to receive ipi interrupt from SCP.
30 * Return: 0 if ipi registers successfully, -error on error.
53 * scp_ipi_unregister() - unregister an ipi function
56 * @id: IPI ID
58 * Unregister an ipi function to receive ipi interrupt from SCP.
112 * scp_ipi_lock() - Lock before operations of an IPI ID
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| D | xlnx_r5_remoteproc.c | 12 #include <linux/mailbox/zynqmp-ipi-message.h>
22 /* IPI buffer MAX length */
94 * @ipi: pointer to mailbox information
103 struct mbox_info *ipi; member
150 struct mbox_info *ipi; in handle_event_notified() local
153 ipi = container_of(work, struct mbox_info, mbox_work); in handle_event_notified()
154 rproc = ipi->r5_core->rproc; in handle_event_notified()
157 * We only use IPI for interrupt. The RPU firmware side may or may in handle_event_notified()
158 * not write the notifyid when it trigger IPI. in handle_event_notified()
171 * Receive data from ipi buffer, ack interrupt and then
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| /kernel/linux/linux-6.6/kernel/irq/ |
| D | ipi.c | 6 * This file contains driver APIs to the IPI subsystem.
9 #define pr_fmt(fmt) "genirq/ipi: " fmt
15 * irq_reserve_ipi() - Setup an IPI to destination cpumask
16 * @domain: IPI domain
17 * @dest: cpumask of CPUs which can receive the IPI
19 * Allocate a virq that can be used to send IPI to any CPU in dest mask.
31 pr_warn("Reservation on a non IPI domain\n"); in irq_reserve_ipi()
59 * The IPI requires a separate HW irq on each CPU. We require in irq_reserve_ipi()
62 * several IPI ranges. in irq_reserve_ipi()
80 pr_warn("Can't reserve IPI, failed to alloc descs\n"); in irq_reserve_ipi()
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| D | ipi-mux.c | 3 * Multiplex several virtual IPIs over a single HW IPI.
9 #define pr_fmt(fmt) "ipi-mux: " fmt
49 /* If a pending IPI was unmasked, raise a parent IPI immediately. */ in ipi_mux_unmask()
81 * The flag writes must complete before the physical IPI is in ipi_mux_send_mask()
92 .name = "IPI Mux",
146 * parent IPI.
149 * @mux_send: callback to trigger parent IPI for a particular CPU
170 fwnode = irq_domain_alloc_named_fwnode("IPI-Mux"); in ipi_mux_create()
172 pr_err("unable to create IPI Mux fwnode\n"); in ipi_mux_create()
180 pr_err("unable to add IPI Mux domain\n"); in ipi_mux_create()
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| /kernel/linux/linux-5.10/kernel/irq/ |
| D | ipi.c | 6 * This file contains driver APIs to the IPI subsystem.
9 #define pr_fmt(fmt) "genirq/ipi: " fmt
15 * irq_reserve_ipi() - Setup an IPI to destination cpumask
16 * @domain: IPI domain
17 * @dest: cpumask of cpus which can receive the IPI
19 * Allocate a virq that can be used to send IPI to any CPU in dest mask.
31 pr_warn("Reservation on a non IPI domain\n"); in irq_reserve_ipi()
59 * The IPI requires a separate HW irq on each CPU. We require in irq_reserve_ipi()
62 * several IPI ranges. in irq_reserve_ipi()
80 pr_warn("Can't reserve IPI, failed to alloc descs\n"); in irq_reserve_ipi()
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| /kernel/linux/linux-5.10/include/linux/rpmsg/ |
| D | mtk_rpmsg.h | 15 * struct mtk_rpmsg_info - IPI functions tied to the rpmsg device.
16 * @register_ipi: register IPI handler for an IPI id.
17 * @unregister_ipi: unregister IPI handler for a registered IPI id.
18 * @send_ipi: send IPI to an IPI id. wait is the timeout (in msecs) to wait
20 * @ns_ipi_id: the IPI id used for name service, or -1 if name service isn't
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| /kernel/linux/linux-6.6/include/linux/rpmsg/ |
| D | mtk_rpmsg.h | 15 * struct mtk_rpmsg_info - IPI functions tied to the rpmsg device.
16 * @register_ipi: register IPI handler for an IPI id.
17 * @unregister_ipi: unregister IPI handler for a registered IPI id.
18 * @send_ipi: send IPI to an IPI id. wait is the timeout (in msecs) to wait
20 * @ns_ipi_id: the IPI id used for name service, or -1 if name service isn't
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| /kernel/linux/linux-5.10/include/trace/events/ |
| D | ipi.h | 3 #define TRACE_SYSTEM ipi
13 * @mask: mask of recipient CPUs for the IPI
14 * @reason: string identifying the IPI purpose
56 * ipi_entry - called immediately before the IPI handler
58 * @reason: string identifying the IPI purpose
62 * for that IPI.
72 * ipi_exit - called immediately after the IPI handler returns
74 * @reason: string identifying the IPI purpose
78 * that IPI.
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| /kernel/linux/linux-6.6/drivers/media/platform/mediatek/vpu/ |
| D | mtk_vpu.h | 32 * For other IPI below, AP should send the request
52 * @IPI_MAX: The maximum IPI number
82 * vpu_ipi_register - register an ipi function
85 * @id: IPI ID
86 * @handler: IPI handler
87 * @name: IPI name
88 * @priv: private data for IPI handler
90 * Register an ipi function to receive ipi interrupt from VPU.
92 * Return: Return 0 if ipi registers successfully, otherwise it is failed.
101 * @id: IPI ID
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| /kernel/linux/linux-5.10/drivers/media/platform/mtk-vpu/ |
| D | mtk_vpu.h | 30 * For other IPI below, AP should send the request
50 * @IPI_MAX: The maximum IPI number
80 * vpu_ipi_register - register an ipi function
83 * @id: IPI ID
84 * @handler: IPI handler
85 * @name: IPI name
86 * @priv: private data for IPI handler
88 * Register an ipi function to receive ipi interrupt from VPU.
90 * Return: Return 0 if ipi registers successfully, otherwise it is failed.
99 * @id: IPI ID
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| /kernel/linux/linux-6.6/include/trace/events/ |
| D | ipi.h | 3 #define TRACE_SYSTEM ipi
13 * @mask: mask of recipient CPUs for the IPI
14 * @reason: string identifying the IPI purpose
100 * ipi_entry - called immediately before the IPI handler
102 * @reason: string identifying the IPI purpose
106 * for that IPI.
116 * ipi_exit - called immediately after the IPI handler returns
118 * @reason: string identifying the IPI purpose
122 * that IPI.
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| /kernel/linux/linux-5.10/Documentation/virt/kvm/ |
| D | vcpu-requests.rst | 47 order to perform some KVM maintenance. To do so, an IPI is sent, forcing
53 1) Send an IPI. This forces a guest mode exit.
68 as well as to avoid sending unnecessary IPIs (see "IPI Reduction"), and
69 even to ensure IPI acknowledgements are waited upon (see "Waiting for
158 then the caller will wait for each VCPU to acknowledge its IPI before
160 If, for example, the VCPU is sleeping, so no IPI is necessary, then
190 kick will send an IPI to force an exit from guest mode when necessary.
195 enter guest mode. This means that an optimized implementation (see "IPI
196 Reduction") must be certain when it's safe to not send the IPI. One
206 !kvm_request_pending() on its last check and then not receiving an IPI for
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| /kernel/linux/linux-6.6/Documentation/virt/kvm/ |
| D | vcpu-requests.rst | 49 order to perform some KVM maintenance. To do so, an IPI is sent, forcing
55 1) Send an IPI. This forces a guest mode exit.
70 as well as to avoid sending unnecessary IPIs (see "IPI Reduction"), and
71 even to ensure IPI acknowledgements are waited upon (see "Waiting for
160 then the caller will wait for each VCPU to acknowledge its IPI before
162 If, for example, the VCPU is sleeping, so no IPI is necessary, then
192 kick will send an IPI to force an exit from guest mode when necessary.
197 enter guest mode. This means that an optimized implementation (see "IPI
198 Reduction") must be certain when it's safe to not send the IPI. One
208 !kvm_request_pending() on its last check and then not receiving an IPI for
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| /kernel/linux/linux-6.6/arch/hexagon/kernel/ |
| D | smp.c | 38 static inline void __handle_ipi(unsigned long *ops, struct ipi_data *ipi, in __handle_ipi() argument
69 /* Used for IPI call from other CPU's to unmask int */
77 * This is based on Alpha's IPI stuff.
85 struct ipi_data *ipi = &per_cpu(ipi_data, cpu); in handle_ipi() local
88 while ((ops = xchg(&ipi->bits, 0)) != 0) in handle_ipi()
89 __handle_ipi(&ops, ipi, cpu); in handle_ipi()
102 struct ipi_data *ipi = &per_cpu(ipi_data, cpu); in send_ipi() local
104 set_bit(msg, &ipi->bits); in send_ipi()
212 /* Also need to register the interrupts for IPI */ in smp_prepare_cpus()
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| /kernel/linux/linux-5.10/arch/hexagon/kernel/ |
| D | smp.c | 38 static inline void __handle_ipi(unsigned long *ops, struct ipi_data *ipi, in __handle_ipi() argument
69 /* Used for IPI call from other CPU's to unmask int */
77 * This is based on Alpha's IPI stuff.
85 struct ipi_data *ipi = &per_cpu(ipi_data, cpu); in handle_ipi() local
88 while ((ops = xchg(&ipi->bits, 0)) != 0) in handle_ipi()
89 __handle_ipi(&ops, ipi, cpu); in handle_ipi()
102 struct ipi_data *ipi = &per_cpu(ipi_data, cpu); in send_ipi() local
104 set_bit(msg, &ipi->bits); in send_ipi()
212 /* Also need to register the interrupts for IPI */ in smp_prepare_cpus()
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| /kernel/linux/linux-6.6/arch/riscv/kernel/ |
| D | sbi-ipi.c | 3 * Multiplex several IPIs over a single HW IPI.
67 * Don't disable IPI when CPU goes offline because in sbi_ipi_init()
69 * via generic IPI-Mux in sbi_ipi_init()
72 "irqchip/sbi-ipi:starting", in sbi_ipi_init()
76 pr_info("providing IPIs using SBI IPI extension\n"); in sbi_ipi_init()
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| /kernel/linux/linux-5.10/arch/arc/kernel/ |
| D | smp.c | 258 * figure out what msg was sent. For those which don't (ARC has dedicated IPI
284 * Call the platform specific IPI kick function, but avoid if possible: in ipi_send_msg_one()
287 * IPI corresponding to that msg. This is true, even if it is already in in ipi_send_msg_one()
288 * IPI handler, because !@old means it has not yet dequeued the msg(s) in ipi_send_msg_one()
329 * ipi_cpu_stop - handle IPI from smp_send_stop()
362 * Has hooks for platform specific IPI
369 pr_debug("IPI [%ld] received on cpu %d\n", in do_IPI()
376 * "dequeue" the msg corresponding to this IPI (and possibly other in do_IPI()
387 pr_info("IPI with bogus msg %ld in %ld\n", msg, copy); in do_IPI()
395 * API called by platform code to hookup arch-common ISR to their IPI IRQ
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