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/linux/Documentation/devicetree/bindings/interrupt-controller/
H A Dloongson,pch-pic.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/interrupt-controller/loongson,pch-pic.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Loongson PCH PIC Controller
10 - Jiaxun Yang <jiaxun.yang@flygoat.com>
13 This interrupt controller is found in the Loongson LS7A family of PCH for
14 transforming interrupts from on-chip devices into HyperTransport vectorized
19 const: loongson,pch-pic-1.0
22 maxItems: 1
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H A Dloongson,htpic.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/interrupt-controller/loongson,htpic.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Loongson-3 HyperTransport Interrupt Controller
10 - Jiaxun Yang <jiaxun.yang@flygoat.com>
13 - $ref: /schemas/interrupt-controller.yaml#
16 This interrupt controller is found in the Loongson-3 family of chips to transmit
17 interrupts from PCH PIC connected on HyperTransport bus.
21 const: loongson,htpic-1.0
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/linux/Documentation/translations/zh_TW/arch/loongarch/
H A Dirq-chip-model.rst1 .. SPDX-License-Identifier: GPL-2.0
3 .. include:: ../../disclaimer-zh_TW.rst
5 :Original: Documentation/arch/loongarch/irq-chip-model.rst
15 HTVECINTC（Hyper-Transport Vector Interrupt Controller）、PCH-PIC（LS7A芯片組的主中
16 斷控制器）、PCH-LPC（LS7A芯片組的LPC中斷控制器）和PCH-MSI（MSI中斷控制器）。
19 全局中斷控制器（每個芯片一個，所有核共享），而PCH-PIC/PCH-LPC/PCH-MSI是CPU外部的中
26 在這種模型裏面，IPI（Inter-Processor Interrupt）和CPU本地時鐘中斷直接發送到CPUINTC，
27 CPU串口（UARTs）中斷髮送到LIOINTC，而其他所有設備的中斷則分別發送到所連接的PCH-PIC/
28 PCH-LPC/PCH-MSI，然後被HTVECINTC統一收集，再發送到LIOINTC，最後到達CPUINTC::
30 +-----+ +---------+ +-------+
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/linux/arch/loongarch/kvm/intc/
H A Dpch_pic.c1 // SPDX-License-Identifier: GPL-2.0
21 if (mask & s->irr & ~s->mask) { in pch_pic_update_irq()
22 s->isr |= mask; in pch_pic_update_irq()
23 irq = s->htmsi_vector[irq]; in pch_pic_update_irq()
24 eiointc_set_irq(s->kvm->arch.eiointc, irq, level); in pch_pic_update_irq()
27 if (mask & s->isr & ~s->irr) { in pch_pic_update_irq()
28 s->isr &= ~mask; in pch_pic_update_irq()
29 irq = s->htmsi_vector[irq]; in pch_pic_update_irq()
30 eiointc_set_irq(s->kvm->arch.eiointc, irq, level); in pch_pic_update_irq()
45 bitmap_clear((void *)&irq_mask, irq, 1); in pch_pic_update_batch_irqs()
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/linux/drivers/irqchip/
H A Dirq-loongson-pch-pic.c1 // SPDX-License-Identifier: GPL-2.0
4 * Loongson PCH PIC support
7 #define pr_fmt(fmt) "pch-pic: " fmt
20 #include "irq-loongson.h"
62 return priv->table[hirq]; in hwirq_to_bit()
68 void __iomem *addr = priv->base + offset + PIC_REG_IDX(bit) * 4; in pch_pic_bitset()
70 raw_spin_lock(&priv->pic_lock); in pch_pic_bitset()
74 raw_spin_unlock(&priv->pic_lock); in pch_pic_bitset()
80 void __iomem *addr = priv->base + offset + PIC_REG_IDX(bit) * 4; in pch_pic_bitclr()
82 raw_spin_lock(&priv->pic_lock); in pch_pic_bitclr()
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H A DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
23 default 1
131 tristate "Broadcom BCM2712 MSI-X Interrupt Peripheral support"
140 Enable support for the Broadcom BCM2712 MSI-X target peripheral
141 (MIP) needed by brcmstb PCIe to handle MSI-X interrupts on
153 tristate "Broadcom STB 7038-style L1/L2 interrupt controller driver"
161 tristate "Broadcom STB 7120-style L2 interrupt controller driver"
220 will be called irq-lan966x-oic.
261 bool "J-Core integrated AIC" if COMPILE_TEST
265 Support for the J-Core integrated AIC.
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/linux/arch/loongarch/boot/dts/
H A Dloongson-2k2000.dtsi1 // SPDX-License-Identifier: GPL-2.0
6 /dts-v1/;
8 #include <dt-bindings/interrupt-controller/irq.h>
9 #include <dt-bindings/clock/loongson,ls2k-clk.h>
12 #address-cells = <2>;
13 #size-cells = <2>;
16 #address-cells = <1>;
17 #size-cells = <0>;
19 cpu0: cpu@1 {
34 ref_100m: clock-ref-100m {
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/linux/arch/loongarch/kvm/
H A Dexit.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2020-2023 Loongson Technology Corporation Limited
34 ++vcpu->stat.cpucfg_exits; in kvm_emu_cpucfg()
35 index = vcpu->arch.gprs[rj]; in kvm_emu_cpucfg()
45 case 0 ... (KVM_MAX_CPUCFG_REGS - 1): in kvm_emu_cpucfg()
46 vcpu->arch.gprs[rd] = vcpu->arch.cpucfg[index]; in kvm_emu_cpucfg()
49 /* CPUCFG emulation between 0x40000000 -- 0x400000ff */ in kvm_emu_cpucfg()
50 vcpu->arch.gprs[rd] = *(unsigned int *)KVM_SIGNATURE; in kvm_emu_cpucfg()
53 ret = vcpu->kvm->arch.pv_features & LOONGARCH_PV_FEAT_MASK; in kvm_emu_cpucfg()
54 vcpu->arch.gprs[rd] = ret; in kvm_emu_cpucfg()
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H A Dmain.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2020-2023 Loongson Technology Corporation Limited
43 * function to set the flag to 1 (SW_GCSR) or 2 (HW_GCSR) if the
202 context = per_cpu_ptr(vcpu->kvm->arch.vmcs, cpu); in kvm_update_vpid()
203 vpid = context->vpid_cache + 1; in kvm_update_vpid()
207 vpid = vpid_mask + 1; in kvm_update_vpid()
215 context->vpid_cache = vpid; in kvm_update_vpid()
216 vcpu->arch.vpid = vpid; in kvm_update_vpid()
231 context = per_cpu_ptr(vcpu->kvm->arch.vmcs, cpu); in kvm_check_vpid()
232 migrated = (vcpu->cpu != cpu); in kvm_check_vpid()
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/linux/drivers/pci/
H A Dquirks.c1 // SPDX-License-Identifier: GPL-2.0
3 * This file contains work-arounds for many known PCI hardware bugs.
5 * should be handled in arch-specific code.
22 #include <linux/isa-dma.h> /* isa_dma_bridge_buggy */
41 if (test_bit(PCI_LINK_LBMS_SEEN, &dev->priv_flags)) in pcie_lbms_seen()
102 int ret = -ENOTTY; in pcie_failed_link_retrain()
105 !pcie_cap_has_lnkctl2(dev) || !dev->link_active_reporting) in pcie_failed_link_retrain()
112 pci_info(dev, "broken device, retraining non-functional downstream link at 2.5GT/s\n"); in pcie_failed_link_retrain()
173 if ((f->class == (u32) (dev->class >> f->class_shift) || in pci_do_fixups()
174 f->class == (u32) PCI_ANY_ID) && in pci_do_fixups()
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/linux/
H A DMAINTAINERS5 ---------------------------------------------------
21 W: *Web-page* with status/info
23 B: URI for where to file *bugs*. A web-page with detailed bug
28 patches to the given subsystem. This is either an in-tree file,
29 or a URI. See Documentation/maintainer/maintainer-entry-profile.rst
46 N: [^a-z]tegra all files whose path contains tegra
64 ----------------
83 3WARE SAS/SATA-RAID SCSI DRIVERS (3W-XXXX, 3W-9XXX, 3W-SAS)
85 L: linux-scsi@vger.kernel.org
88 F: drivers/scsi/3w-*
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