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-----BEGIN PGP SIGNATURE----- iQJIBAABCgAyFiEEgMe7l+5h9hnxdsnuWYigwDrT+vwFAmE3jjYUHGJoZWxnYWFz QGdvb2dsZS5jb20ACgkQWYigwDrT+vwrIA/8DYHYRQ6tR3lY0ZxVeBdnd/ryp/ag z35N8RFLPaFlifLWSldwDV/8dylXnRjS57WS9sppp5gKsLl6xYySvTeMpt5QHdXd gJw27sBqiBmecUGFHWVp9B3yF2LvgrtItjd9RadYaHhWEfWyB5AFK7qwxx02fzvo hoGA2XbpI/Hb1BvSOi1avmPYgly1BRu8RFvKMwB2cxQNv3TZOnekT/iFK5WVR1o2 Z5BA+0nj9PrDO/axS0Vh+TqXhU+hOGox7bkOMcNmbDV7Yo8hgot5SsxddbZqJX+O BNNrRv72pbHGIwT/vOP7OQ49sRXledHYeyEGIixjLylBcROk9t8M1z1sfgJ6obVy 1eM3TIx/+7OS5dxC+gTNMVgUiL1NQIdA1LVIBb0BrXm6yNqNxBlj3o/gQ+VGEiNI 0lATmpe4P/N0/cOSI7tK9O2zsX3qzbLnJxsseGrwtK1L+GRYMUPhP4ciblhB0CIf BmK9j0ROmCBGN0Pz/5wIaQgkTro74dqO1BPX8n84M8KWByNZwTrJo/rCBdD4DGaJ eJvyt3hoYxhSxRQ1rp3zqZ9ytm4dJBGcZBKeO1IvKvJHEzfZBIqqq3M/hlNIaSDP v+8I9HaS1kI4SDB1Ia0LFRqKqvpN+WVLB+EoGkeDQozPO42tYSb43lYe83sEnZ+T KY0a/5feu975eLs= =g1WT -----END PGP SIGNATURE----- Merge tag 'pci-v5.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI updates from Bjorn Helgaas: "Enumeration: - Convert controller drivers to generic_handle_domain_irq() (Marc Zyngier) - Simplify VPD (Vital Product Data) access and search (Heiner Kallweit) - Update bnx2, bnx2x, bnxt, cxgb4, cxlflash, sfc, tg3 drivers to use simplified VPD interfaces (Heiner Kallweit) - Run Max Payload Size quirks before configuring MPS; work around ASMedia ASM1062 SATA MPS issue (Marek Behún) Resource management: - Refactor pci_ioremap_bar() and pci_ioremap_wc_bar() (Krzysztof Wilczyński) - Optimize pci_resource_len() to reduce kernel size (Zhen Lei) PCI device hotplug: - Fix a double unmap in ibmphp (Vishal Aslot) PCIe port driver: - Enable Bandwidth Notification only if port supports it (Stuart Hayes) Sysfs/proc/syscalls: - Add schedule point in proc_bus_pci_read() (Krzysztof Wilczyński) - Return ~0 data on pciconfig_read() CAP_SYS_ADMIN failure (Krzysztof Wilczyński) - Return "int" from pciconfig_read() syscall (Krzysztof Wilczyński) Virtualization: - Extend "pci=noats" to also turn on Translation Blocking to protect against some DMA attacks (Alex Williamson) - Add sysfs mechanism to control the type of reset used between device assignments to VMs (Amey Narkhede) - Add support for ACPI _RST reset method (Shanker Donthineni) - Add ACS quirks for Cavium multi-function devices (George Cherian) - Add ACS quirks for NXP LX2xx0 and LX2xx2 platforms (Wasim Khan) - Allow HiSilicon AMBA devices that appear as fake PCI devices to use PASID and SVA (Zhangfei Gao) Endpoint framework: - Add support for SR-IOV Endpoint devices (Kishon Vijay Abraham I) - Zero-initialize endpoint test tool parameters so we don't use random parameters (Shunyong Yang) APM X-Gene PCIe controller driver: - Remove redundant dev_err() call in xgene_msi_probe() (ErKun Yang) Broadcom iProc PCIe controller driver: - Don't fail devm_pci_alloc_host_bridge() on missing 'ranges' because it's optional on BCMA devices (Rob Herring) - Fix BCMA probe resource handling (Rob Herring) Cadence PCIe driver: - Work around J7200 Link training electrical issue by increasing delays in LTSSM (Nadeem Athani) Intel IXP4xx PCI controller driver: - Depend on ARCH_IXP4XX to avoid useless config questions (Geert Uytterhoeven) Intel Keembay PCIe controller driver: - Add Intel Keem Bay PCIe controller (Srikanth Thokala) Marvell Aardvark PCIe controller driver: - Work around config space completion handling issues (Evan Wang) - Increase timeout for config access completions (Pali Rohár) - Emulate CRS Software Visibility bit (Pali Rohár) - Configure resources from DT 'ranges' property to fix I/O space access (Pali Rohár) - Serialize INTx mask/unmask (Pali Rohár) MediaTek PCIe controller driver: - Add MT7629 support in DT (Chuanjia Liu) - Fix an MSI issue (Chuanjia Liu) - Get syscon regmap ("mediatek,generic-pciecfg"), IRQ number ("pci_irq"), PCI domain ("linux,pci-domain") from DT properties if present (Chuanjia Liu) Microsoft Hyper-V host bridge driver: - Add ARM64 support (Boqun Feng) - Support "Create Interrupt v3" message (Sunil Muthuswamy) NVIDIA Tegra PCIe controller driver: - Use seq_puts(), move err_msg from stack to static, fix OF node leak (Christophe JAILLET) NVIDIA Tegra194 PCIe driver: - Disable suspend when in Endpoint mode (Om Prakash Singh) - Fix MSI-X address programming error (Om Prakash Singh) - Disable interrupts during suspend to avoid spurious AER link down (Om Prakash Singh) Renesas R-Car PCIe controller driver: - Work around hardware issue that prevents Link L1->L0 transition (Marek Vasut) - Fix runtime PM refcount leak (Dinghao Liu) Rockchip DesignWare PCIe controller driver: - Add Rockchip RK356X host controller driver (Simon Xue) TI J721E PCIe driver: - Add support for J7200 and AM64 (Kishon Vijay Abraham I) Toshiba Visconti PCIe controller driver: - Add Toshiba Visconti PCIe host controller driver (Nobuhiro Iwamatsu) Xilinx NWL PCIe controller driver: - Enable PCIe reference clock via CCF (Hyun Kwon) Miscellaneous: - Convert sta2x11 from 'pci_' to 'dma_' API (Christophe JAILLET) - Fix pci_dev_str_match_path() alloc while atomic bug (used for kernel parameters that specify devices) (Dan Carpenter) - Remove pointless Precision Time Management warning when PTM is present but not enabled (Jakub Kicinski) - Remove surplus "break" statements (Krzysztof Wilczyński)" * tag 'pci-v5.15-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (132 commits) PCI: ibmphp: Fix double unmap of io_mem x86/PCI: sta2x11: switch from 'pci_' to 'dma_' API PCI/VPD: Use unaligned access helpers PCI/VPD: Clean up public VPD defines and inline functions cxgb4: Use pci_vpd_find_id_string() to find VPD ID string PCI/VPD: Add pci_vpd_find_id_string() PCI/VPD: Include post-processing in pci_vpd_find_tag() PCI/VPD: Stop exporting pci_vpd_find_info_keyword() PCI/VPD: Stop exporting pci_vpd_find_tag() PCI: Set dma-can-stall for HiSilicon chips PCI: rockchip-dwc: Add Rockchip RK356X host controller driver PCI: dwc: Remove surplus break statement after return PCI: artpec6: Remove local code block from switch statement PCI: artpec6: Remove surplus break statement after return MAINTAINERS: Add entries for Toshiba Visconti PCIe controller PCI: visconti: Add Toshiba Visconti PCIe host controller driver PCI/portdrv: Enable Bandwidth Notification only if port supports it PCI: Allow PASID on fake PCIe devices without TLP prefixes PCI: mediatek: Use PCI domain to handle ports detection PCI: mediatek: Add new method to get irq number ...
216 lines
7.1 KiB
C
216 lines
7.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* PCI Endpoint *Function* (EPF) header file
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*
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* Copyright (C) 2017 Texas Instruments
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* Author: Kishon Vijay Abraham I <kishon@ti.com>
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*/
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#ifndef __LINUX_PCI_EPF_H
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#define __LINUX_PCI_EPF_H
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#include <linux/configfs.h>
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#include <linux/device.h>
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#include <linux/mod_devicetable.h>
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#include <linux/pci.h>
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struct pci_epf;
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enum pci_epc_interface_type;
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enum pci_notify_event {
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CORE_INIT,
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LINK_UP,
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};
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enum pci_barno {
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NO_BAR = -1,
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BAR_0,
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BAR_1,
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BAR_2,
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BAR_3,
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BAR_4,
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BAR_5,
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};
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/**
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* struct pci_epf_header - represents standard configuration header
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* @vendorid: identifies device manufacturer
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* @deviceid: identifies a particular device
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* @revid: specifies a device-specific revision identifier
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* @progif_code: identifies a specific register-level programming interface
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* @subclass_code: identifies more specifically the function of the device
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* @baseclass_code: broadly classifies the type of function the device performs
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* @cache_line_size: specifies the system cacheline size in units of DWORDs
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* @subsys_vendor_id: vendor of the add-in card or subsystem
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* @subsys_id: id specific to vendor
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* @interrupt_pin: interrupt pin the device (or device function) uses
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*/
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struct pci_epf_header {
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u16 vendorid;
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u16 deviceid;
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u8 revid;
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u8 progif_code;
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u8 subclass_code;
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u8 baseclass_code;
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u8 cache_line_size;
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u16 subsys_vendor_id;
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u16 subsys_id;
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enum pci_interrupt_pin interrupt_pin;
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};
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/**
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* struct pci_epf_ops - set of function pointers for performing EPF operations
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* @bind: ops to perform when a EPC device has been bound to EPF device
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* @unbind: ops to perform when a binding has been lost between a EPC device
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* and EPF device
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* @add_cfs: ops to initialize function specific configfs attributes
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*/
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struct pci_epf_ops {
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int (*bind)(struct pci_epf *epf);
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void (*unbind)(struct pci_epf *epf);
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struct config_group *(*add_cfs)(struct pci_epf *epf,
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struct config_group *group);
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};
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/**
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* struct pci_epf_driver - represents the PCI EPF driver
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* @probe: ops to perform when a new EPF device has been bound to the EPF driver
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* @remove: ops to perform when the binding between the EPF device and EPF
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* driver is broken
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* @driver: PCI EPF driver
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* @ops: set of function pointers for performing EPF operations
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* @owner: the owner of the module that registers the PCI EPF driver
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* @epf_group: list of configfs group corresponding to the PCI EPF driver
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* @id_table: identifies EPF devices for probing
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*/
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struct pci_epf_driver {
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int (*probe)(struct pci_epf *epf);
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void (*remove)(struct pci_epf *epf);
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struct device_driver driver;
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struct pci_epf_ops *ops;
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struct module *owner;
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struct list_head epf_group;
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const struct pci_epf_device_id *id_table;
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};
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#define to_pci_epf_driver(drv) (container_of((drv), struct pci_epf_driver, \
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driver))
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/**
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* struct pci_epf_bar - represents the BAR of EPF device
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* @phys_addr: physical address that should be mapped to the BAR
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* @addr: virtual address corresponding to the @phys_addr
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* @size: the size of the address space present in BAR
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* @barno: BAR number
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* @flags: flags that are set for the BAR
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*/
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struct pci_epf_bar {
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dma_addr_t phys_addr;
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void *addr;
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size_t size;
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enum pci_barno barno;
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int flags;
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};
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/**
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* struct pci_epf - represents the PCI EPF device
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* @dev: the PCI EPF device
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* @name: the name of the PCI EPF device
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* @header: represents standard configuration header
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* @bar: represents the BAR of EPF device
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* @msi_interrupts: number of MSI interrupts required by this function
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* @msix_interrupts: number of MSI-X interrupts required by this function
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* @func_no: unique (physical) function number within this endpoint device
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* @vfunc_no: unique virtual function number within a physical function
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* @epc: the EPC device to which this EPF device is bound
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* @epf_pf: the physical EPF device to which this virtual EPF device is bound
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* @driver: the EPF driver to which this EPF device is bound
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* @list: to add pci_epf as a list of PCI endpoint functions to pci_epc
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* @nb: notifier block to notify EPF of any EPC events (like linkup)
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* @lock: mutex to protect pci_epf_ops
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* @sec_epc: the secondary EPC device to which this EPF device is bound
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* @sec_epc_list: to add pci_epf as list of PCI endpoint functions to secondary
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* EPC device
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* @sec_epc_bar: represents the BAR of EPF device associated with secondary EPC
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* @sec_epc_func_no: unique (physical) function number within the secondary EPC
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* @group: configfs group associated with the EPF device
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* @is_bound: indicates if bind notification to function driver has been invoked
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* @is_vf: true - virtual function, false - physical function
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* @vfunction_num_map: bitmap to manage virtual function number
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* @pci_vepf: list of virtual endpoint functions associated with this function
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*/
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struct pci_epf {
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struct device dev;
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const char *name;
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struct pci_epf_header *header;
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struct pci_epf_bar bar[6];
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u8 msi_interrupts;
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u16 msix_interrupts;
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u8 func_no;
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u8 vfunc_no;
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struct pci_epc *epc;
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struct pci_epf *epf_pf;
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struct pci_epf_driver *driver;
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struct list_head list;
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struct notifier_block nb;
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/* mutex to protect against concurrent access of pci_epf_ops */
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struct mutex lock;
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/* Below members are to attach secondary EPC to an endpoint function */
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struct pci_epc *sec_epc;
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struct list_head sec_epc_list;
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struct pci_epf_bar sec_epc_bar[6];
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u8 sec_epc_func_no;
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struct config_group *group;
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unsigned int is_bound;
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unsigned int is_vf;
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unsigned long vfunction_num_map;
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struct list_head pci_vepf;
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};
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/**
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* struct pci_epf_msix_tbl - represents the MSIX table entry structure
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* @msg_addr: Writes to this address will trigger MSIX interrupt in host
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* @msg_data: Data that should be written to @msg_addr to trigger MSIX interrupt
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* @vector_ctrl: Identifies if the function is prohibited from sending a message
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* using this MSIX table entry
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*/
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struct pci_epf_msix_tbl {
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u64 msg_addr;
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u32 msg_data;
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u32 vector_ctrl;
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};
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#define to_pci_epf(epf_dev) container_of((epf_dev), struct pci_epf, dev)
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#define pci_epf_register_driver(driver) \
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__pci_epf_register_driver((driver), THIS_MODULE)
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static inline void epf_set_drvdata(struct pci_epf *epf, void *data)
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{
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dev_set_drvdata(&epf->dev, data);
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}
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static inline void *epf_get_drvdata(struct pci_epf *epf)
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{
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return dev_get_drvdata(&epf->dev);
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}
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struct pci_epf *pci_epf_create(const char *name);
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void pci_epf_destroy(struct pci_epf *epf);
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int __pci_epf_register_driver(struct pci_epf_driver *driver,
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struct module *owner);
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void pci_epf_unregister_driver(struct pci_epf_driver *driver);
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void *pci_epf_alloc_space(struct pci_epf *epf, size_t size, enum pci_barno bar,
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size_t align, enum pci_epc_interface_type type);
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void pci_epf_free_space(struct pci_epf *epf, void *addr, enum pci_barno bar,
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enum pci_epc_interface_type type);
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int pci_epf_bind(struct pci_epf *epf);
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void pci_epf_unbind(struct pci_epf *epf);
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struct config_group *pci_epf_type_add_cfs(struct pci_epf *epf,
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struct config_group *group);
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int pci_epf_add_vepf(struct pci_epf *epf_pf, struct pci_epf *epf_vf);
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void pci_epf_remove_vepf(struct pci_epf *epf_pf, struct pci_epf *epf_vf);
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#endif /* __LINUX_PCI_EPF_H */
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