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/Linux-v6.1/drivers/pci/msi/
Dirqdomain.c1 // SPDX-License-Identifier: GPL-2.0
3 * PCI Message Signaled Interrupt (MSI) - irqdomain support
13 struct irq_domain *domain; in pci_msi_setup_msi_irqs() local
15 domain = dev_get_msi_domain(&dev->dev); in pci_msi_setup_msi_irqs()
16 if (domain && irq_domain_is_hierarchy(domain)) in pci_msi_setup_msi_irqs()
17 return msi_domain_alloc_irqs_descs_locked(domain, &dev->dev, nvec); in pci_msi_setup_msi_irqs()
24 struct irq_domain *domain; in pci_msi_teardown_msi_irqs() local
26 domain = dev_get_msi_domain(&dev->dev); in pci_msi_teardown_msi_irqs()
27 if (domain && irq_domain_is_hierarchy(domain)) in pci_msi_teardown_msi_irqs()
28 msi_domain_free_irqs_descs_locked(domain, &dev->dev); in pci_msi_teardown_msi_irqs()
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/Linux-v6.1/include/linux/
Dmsi.h1 /* SPDX-License-Identifier: GPL-2.0 */
8 * - Interrupt core code
9 * - PCI/MSI core code
10 * - MSI interrupt domain implementations
11 * - IOMMU, low level VFIO, NTB and other justified exceptions
45 * msi_msg - Representation of a MSI message
90 * pci_msi_desc - PCI/MSI specific MSI descriptor data
92 * @msi_mask: [PCI MSI] MSI cached mask bits
93 * @msix_ctrl: [PCI MSI-X] MSI-X cached per vector control bits
94 * @is_msix: [PCI MSI/X] True if MSI-X
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/Linux-v6.1/drivers/pci/
Dsearch.c1 // SPDX-License-Identifier: GPL-2.0
3 * PCI searching functions
5 * Copyright (C) 1993 -- 1997 Drew Eckhardt, Frederic Potter,
6 * David Mosberger-Tang
7 * Copyright (C) 1997 -- 2000 Martin Mares <mj@ucw.cz>
8 * Copyright (C) 2003 -- 2004 Greg Kroah-Hartman <greg@kroah.com>
11 #include <linux/pci.h>
15 #include "pci.h"
20 * pci_for_each_dma_alias - Iterate over DMA aliases for a device
37 * requester is on another PCI bus. in pci_for_each_dma_alias()
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Dxen-pcifront.c1 // SPDX-License-Identifier: GPL-2.0
3 * Xen PCI Frontend
15 #include <linux/pci.h>
18 #include <asm/xen/pci.h>
28 #include <asm/xen/swiotlb-xen.h>
30 #define INVALID_EVTCHN (-1)
65 return sd->pdev; in pcifront_get_pdev()
69 unsigned int domain, unsigned int bus, in pcifront_init_sd() argument
73 sd->sd.node = first_online_node; in pcifront_init_sd()
74 sd->sd.domain = domain; in pcifront_init_sd()
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Dof.c1 // SPDX-License-Identifier: GPL-2.0+
3 * PCI <-> OF mapping helpers
7 #define pr_fmt(fmt) "PCI: OF: " fmt
11 #include <linux/pci.h>
16 #include "pci.h"
21 if (!dev->bus->dev.of_node) in pci_set_of_node()
23 dev->dev.of_node = of_pci_find_child_device(dev->bus->dev.of_node, in pci_set_of_node()
24 dev->devfn); in pci_set_of_node()
25 if (dev->dev.of_node) in pci_set_of_node()
26 dev->dev.fwnode = &dev->dev.of_node->fwnode; in pci_set_of_node()
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/Linux-v6.1/drivers/iommu/
Dfsl_pamu_domain.c1 // SPDX-License-Identifier: GPL-2.0-only
8 #define pr_fmt(fmt) "fsl-pamu-domain: %s: " fmt, __func__
41 return -ENOMEM; in iommu_init_mempool()
52 return -ENOMEM; in iommu_init_mempool()
96 ret = pamu_config_ppaace(liodn, omi_index, dma_domain->stash_id, 0); in pamu_set_liodn()
99 ret = pamu_config_ppaace(liodn, ~(u32)0, dma_domain->stash_id, in pamu_set_liodn()
114 list_del(&info->link); in remove_device_ref()
116 pamu_disable_liodn(info->liodn); in remove_device_ref()
119 dev_iommu_priv_set(info->dev, NULL); in remove_device_ref()
129 spin_lock_irqsave(&dma_domain->domain_lock, flags); in detach_device()
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/Linux-v6.1/drivers/xen/xen-pciback/
Dxenbus.c1 // SPDX-License-Identifier: GPL-2.0
3 * PCI Backend Xenbus Setup - handles setup with frontend and xend
17 #include <xen/pci.h>
20 #define INVALID_EVTCHN_IRQ (-1)
25 "Option to specify how to export PCI topology to guest:\n"\
26 " 0 - (default) Hide the true PCI topology and makes the frontend\n"\
27 " there is a single PCI bus with only the exported devices on it.\n"\
28 " For example, a device at 03:05.0 will be re-assigned to 00:00.0\n"\
29 " while second device at 02:1a.1 will be re-assigned to 00:01.1.\n"\
30 " 1 - Passthrough provides a real view of the PCI topology to the\n"\
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Dpci_stub.c2 * PCI Stub Driver - Grabs devices in backend to be exported later
17 #include <linux/pci.h>
22 #include <xen/pci.h>
42 int domain; member
55 struct xen_pcibk_device *pdev;/* non-NULL if struct pci_dev is in use */
74 dev_dbg(&dev->dev, "pcistub_device_alloc\n"); in pcistub_device_alloc()
80 psdev->dev = pci_dev_get(dev); in pcistub_device_alloc()
81 if (!psdev->dev) { in pcistub_device_alloc()
86 kref_init(&psdev->kref); in pcistub_device_alloc()
87 spin_lock_init(&psdev->lock); in pcistub_device_alloc()
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Dpciback.h1 /* SPDX-License-Identifier: GPL-2.0 */
3 * PCI Backend Common Data Structures & Function Declarations
10 #include <linux/pci.h>
20 #define DRV_NAME "xen-pciback"
55 unsigned int ack_intr:1; /* .. and ACK-ing */
57 unsigned int irq; /* Saved in case device transitions to MSI/MSI-X */
58 char irq_name[]; /* xen-pcibk[000:04:00.0] */
66 /* Get/Put PCI Devices that are hidden from the PCI Backend Domain */
68 int domain, int bus,
82 /* Access a virtual configuration space for a PCI device */
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/Linux-v6.1/Documentation/s390/
Dpci.rst1 .. SPDX-License-Identifier: GPL-2.0
4 S/390 PCI
8 - Pierre Morel
17 -----------------------
21 Do not use PCI Mapped I/O (MIO) instructions.
25 Ignore the RID field and force use of one PCI domain per PCI function.
28 ---------------
36 - /sys/kernel/debug/s390dbf/pci_msg/sprintf
37 Holds messages from the processing of PCI events, like machine check handling
50 * /sys/bus/pci/slots/XXXXXXXX
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/Linux-v6.1/drivers/xen/
DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
9 The balloon driver allows the Xen domain to request more memory from
10 the system to expand the domain's memory allocation, or alternatively
28 1) target domain: ensure that memory auto online policy is in
32 2) control domain: xl mem-max <target-domain> <maxmem>
35 3) control domain: xl mem-set <target-domain> <memory>
40 target domain.
43 the newly added memory can be manually onlined in the target domain
51 …SUBSYSTEM=="memory", ACTION=="add", RUN+="/bin/sh -c '[ -f /sys$devpath/state ] && echo online > /…
107 may pass arbitrary information to the initial domain.
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/Linux-v6.1/kernel/irq/
Dmsi.c1 // SPDX-License-Identifier: GPL-2.0
9 * PCI compatible and non PCI compatible devices.
18 #include <linux/pci.h>
25 * msi_alloc_desc - Allocate an initialized msi_desc
43 desc->dev = dev; in msi_alloc_desc()
44 desc->nvec_used = nvec; in msi_alloc_desc()
46 desc->affinity = kmemdup(affinity, nvec * sizeof(*desc->affinity), GFP_KERNEL); in msi_alloc_desc()
47 if (!desc->affinity) { in msi_alloc_desc()
57 kfree(desc->affinity); in msi_free_desc()
65 desc->msi_index = index; in msi_insert_desc()
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/Linux-v6.1/arch/x86/pci/
Dacpi.c1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/pci.h>
8 #include <linux/pci-acpi.h>
40 printk(KERN_INFO "PCI: %s detected: ignoring ACPI _SEG\n", id->ident); in set_ignore_seg()
47 printk(KERN_INFO "PCI: %s detected: not clipping E820 regions from _CRS\n", in set_no_e820()
48 id->ident); in set_no_e820()
67 .ident = "ASRock ALiveSATA2-GLAN",
69 DMI_MATCH(DMI_PRODUCT_NAME, "ALiveSATA2-GLAN"),
76 .ident = "ASUS M2V-MX SE",
79 DMI_MATCH(DMI_BOARD_NAME, "M2V-MX SE"),
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Dcommon.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Low-Level PCI Support for PC
5 * (c) 1999--2000 Martin Mares <mj@ucw.cz>
9 #include <linux/pci.h>
10 #include <linux/pci-acpi.h>
35 int pcibios_last_bus = -1;
40 int raw_pci_read(unsigned int domain, unsigned int bus, unsigned int devfn, in raw_pci_read() argument
43 if (domain == 0 && reg < 256 && raw_pci_ops) in raw_pci_read()
44 return raw_pci_ops->read(domain, bus, devfn, reg, len, val); in raw_pci_read()
46 return raw_pci_ext_ops->read(domain, bus, devfn, reg, len, val); in raw_pci_read()
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Dxen.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Xen PCI - handle PCI (INTx) and MSI infrastructure calls for PV, HVM and
4 * initial domain support. We also handle the DSDT _PRT callbacks for GSI's
5 * used in HVM and initial domain mode (PV does not parse ACPI, so it has no
7 * 0xcf8 PCI configuration read/write.
15 #include <linux/pci.h>
26 #include <xen/pci.h>
27 #include <asm/xen/pci.h>
42 dev_warn(&dev->dev, "Xen PCI: failed to read interrupt line: %d\n", in xen_pcifront_enable_irq()
46 /* In PV DomU the Xen PCI backend puts the PIRQ in the interrupt line.*/ in xen_pcifront_enable_irq()
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/Linux-v6.1/arch/s390/pci/
Dpci_bus.c1 // SPDX-License-Identifier: GPL-2.0
20 #include <linux/pci.h>
33 /* zpci_bus_prepare_device - Prepare a zPCI function for scanning
36 * The PCI resources for the function are set up and added to its zbus and the
38 * a PCI bus created. If an error occurs the zPCI function is not enabled.
59 if (!zdev->has_resources) { in zpci_bus_prepare_device()
60 zpci_setup_bus_resources(zdev, &zdev->zbus->resources); in zpci_bus_prepare_device()
61 resource_list_for_each_entry_safe(window, n, &zdev->zbus->resources) { in zpci_bus_prepare_device()
62 res = window->res; in zpci_bus_prepare_device()
63 pci_bus_add_resource(zdev->zbus->bus, res, 0); in zpci_bus_prepare_device()
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/Linux-v6.1/drivers/net/ethernet/sun/
DKconfig1 # SPDX-License-Identifier: GPL-2.0
9 depends on SUN3 || SBUS || PCI || SUN_LDOMS
22 depends on (SBUS || PCI)
27 both PCI and Sbus devices. This driver also supports the "qfe" quad
28 100baseT device available in both PCI and Sbus configurations.
58 depends on PCI
63 <http://docs.oracle.com/cd/E19455-01/806-3985-10/806-3985-10.pdf>.
67 depends on PCI
71 <http://docs.oracle.com/cd/E19113-01/giga.ether.pci/817-4341-10/817-4341-10.pdf>.
94 This driver adds a network interface for every vsw-port node
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/Linux-v6.1/Documentation/devicetree/bindings/pci/
Dpci.txt1 PCI bus bridges have standardized Device Tree bindings:
3 PCI Bus Binding to: IEEE Std 1275-1994
4 https://www.devicetree.org/open-firmware/bindings/pci/pci2_1.pdf
9 https://www.devicetree.org/open-firmware/practice/imap/imap0_9d.pdf
14 - linux,pci-domain:
15 If present this property assigns a fixed PCI domain number to a host bridge,
18 host bridges in the system, otherwise potentially conflicting domain numbers
19 may be assigned to root buses behind different host bridges. The domain
21 - max-link-speed:
22 If present this property specifies PCI gen for link capability. Host
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Dmediatek-pcie.txt4 - compatible: Should contain one of the following strings:
5 "mediatek,mt2701-pcie"
6 "mediatek,mt2712-pcie"
7 "mediatek,mt7622-pcie"
8 "mediatek,mt7623-pcie"
9 "mediatek,mt7629-pcie"
10 "airoha,en7523-pcie"
11 - device_type: Must be "pci"
12 - reg: Base addresses and lengths of the root ports.
13 - reg-names: Names of the above areas to use during resource lookup.
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/Linux-v6.1/tools/power/cpupower/utils/helpers/
Dpci.c1 // SPDX-License-Identifier: GPL-2.0
9 * PCI access helper function depending on libpci
14 * domain: domain
20 * Pass -1 for one of the six above to match any
24 * to access the PCI config space of matching pci devices
26 struct pci_dev *pci_acc_init(struct pci_access **pacc, int domain, int bus, in pci_acc_init() argument
37 filter_nb_link.domain = domain; in pci_acc_init()
47 for (device = (*pacc)->devices; device; device = device->next) { in pci_acc_init()
55 /* Typically one wants to get a specific slot(device)/func of the root domain
60 return pci_acc_init(pacc, 0, 0, slot, func, -1, -1); in pci_slot_func_init()
/Linux-v6.1/Documentation/ABI/testing/
Dsysfs-devices-mapping9 For example, on 4-die Xeon platform with up to 6 IIO stacks per
14 -r--r--r-- /sys/devices/uncore_iio_0/die0
15 -r--r--r-- /sys/devices/uncore_iio_0/die1
16 -r--r--r-- /sys/devices/uncore_iio_0/die2
17 -r--r--r-- /sys/devices/uncore_iio_0/die3
31 IIO PMU 0 on die 0 belongs to PCI RP on bus 0x00, domain 0x0000
32 IIO PMU 0 on die 1 belongs to PCI RP on bus 0x40, domain 0x0000
33 IIO PMU 0 on die 2 belongs to PCI RP on bus 0x80, domain 0x0000
34 IIO PMU 0 on die 3 belongs to PCI RP on bus 0xc0, domain 0x0000
/Linux-v6.1/Documentation/translations/zh_CN/PCI/
Dpci-iov-howto.rst1 .. SPDX-License-Identifier: GPL-2.0
3 .. include:: ../disclaimer-zh_CN.rst
5 :Original: Documentation/PCI/pci-iov-howto.rst
15 .. _cn_pci-iov-howto:
18 PCI Express I/O 虚拟化指南
22 :作者: - Yu Zhao <yu.zhao@intel.com>
23 - Donald Dutile <ddutile@redhat.com>
28 什么是SR-IOV
29 ------------
31 单根I/O虚拟化（SR-IOV）是一种PCI Express扩展功能，它使一个物理设备显示为多个
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/Linux-v6.1/drivers/irqchip/
Dirq-gic-v3-its-pci-msi.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2013-2015 ARM Limited, All Rights Reserved.
8 #include <linux/pci.h>
27 .name = "ITS-MSI",
53 static int its_pci_msi_prepare(struct irq_domain *domain, struct device *dev, in its_pci_msi_prepare() argument
61 return -EINVAL; in its_pci_msi_prepare()
63 msi_info = msi_get_domain_info(domain->parent); in its_pci_msi_prepare()
74 if (alias_dev->subordinate) in its_pci_msi_prepare()
75 pci_walk_bus(alias_dev->subordinate, in its_pci_msi_prepare()
77 info->flags |= MSI_ALLOC_FLAGS_PROXY_DEVICE; in its_pci_msi_prepare()
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/Linux-v6.1/arch/mips/pci/
Dpci-xtalk-bridge.c1 // SPDX-License-Identifier: GPL-2.0
4 * Copyright (C) 1999, 2000, 04 Ralf Baechle (ralf@linux-mips.org)
9 #include <linux/pci.h>
11 #include <linux/dma-direct.h>
13 #include <linux/platform_data/xtalk-bridge.h>
14 #include <linux/nvmem-consumer.h>
18 #include <asm/pci/bridge.h>
27 * Common phys<->dma mapping for platforms using pci xtalk bridge
32 struct bridge_controller *bc = BRIDGE_CONTROLLER(pdev->bus); in phys_to_dma()
34 return bc->baddr + paddr; in phys_to_dma()
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/Linux-v6.1/drivers/scsi/elx/libefc/
Defc_cmds.c1 // SPDX-License-Identifier: GPL-2.0
15 struct efc *efc = nport->efc; in efc_nport_free_resources()
18 nport->attached = false; in efc_nport_free_resources()
21 if (nport->dma.virt) { in efc_nport_free_resources()
22 dma_free_coherent(&efc->pci->dev, nport->dma.size, in efc_nport_free_resources()
23 nport->dma.virt, nport->dma.phys); in efc_nport_free_resources()
24 memset(&nport->dma, 0, sizeof(struct efc_dma)); in efc_nport_free_resources()
28 sli_resource_free(efc->sli, SLI4_RSRC_VPI, nport->indicator); in efc_nport_free_resources()
36 struct efc *efc = nport->efc; in efc_nport_get_mbox_status()
40 if (status || le16_to_cpu(hdr->status)) { in efc_nport_get_mbox_status()
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