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![Linus Torvalds](/assets/img/avatar_default.png)
- Update ACPICA code in the kernel to upstream revision 20210331 including the following changes: * Add parsing for IVRS IVHD 40h and device entry F0h (Alexander Monakov). * Add new CEDT table for CXL 2.0 and iASL support for it (Ben Widawsky, Bob Moore). * NFIT: add Location Cookie field (Bob Moore). * HMAT: add new fields/flags (Bob Moore). * Add new flags in SRAT (Bob Moore). * PMTT: add new fields/structures (Bob Moore). * Add CSI2Bus resource template (Bob Moore). * iASL: Decode subtable type field for VIOT (Bob Moore). * Fix various typos and spelling mistakes (Colin Ian King). * Add new predefined objects _BPC, _BPS, and _BPT (Erik Kaneda). * Add USB4 capabilities UUID (Erik Kaneda). * Add CXL ACPI device ID and _CBR object (Erik Kaneda). * MADT: add Multiprocessor Wakeup Structure (Erik Kaneda). * PCCT: add support for subtable type 5 (Erik Kaneda). * PPTT: add new version of subtable type 1 (Erik Kaneda). * Add SDEV secure access components (Erik Kaneda). * Add support for PHAT table (Erik Kaneda). * iASL: Add definitions for the VIOT table (Jean-Philippe Brucker). * acpisrc: Add missing conversion for VIOT support (Jean-Philippe Brucker). * IORT: Updates for revision E.b (Shameer Kolothum). - Rearrange message printing in ACPI-related code to avoid using the ACPICA's internal message printing macros outside ACPICA and do some related code cleanups (Rafael Wysocki). - Modify the device enumeration code to turn off all of the unused ACPI power resources at the end (Rafael Wysocki). - Change the ACPI power resources handling code to turn off unused ACPI power resources without checking their status which should not be necessary by the spec (Rafael Wysocki). - Add empty stubs for CPPC-related functions to be used when CONFIG_ACPI_CPPC_LIB is not set (Rafael Wysocki). - Simplify device enumeration code (Rafael Wysocki). - Change device enumeration code to use match_string() for string matching (Andy Shevchenko). - Modify irqresource_disabled() to retain the resouce flags that have been set already (Angela Czubak). - Add native backlight whitelist entry for GA401/GA502/GA503 (Luke Jones). - Modify the ACPI backlight driver to let the native backlight handling take over on hardware-reduced systems (Hans de Goede). - Introduce acpi_dev_get() and switch over the ACPI core code to using it (Andy Shevchenko). - Use kobj_attribute as callback argument instead of a local struct type in the CPPC linrary code (Nathan Chancellor). - Drop unneeded initializatio of a static variable from the ACPI processor driver (Tian Tao). - Drop unnecessary local variable assignment from the ACPI APEI code (Colin Ian King). - Document for_each_acpi_dev_match() macro (Andy Shevchenko). - Address assorted coding style issues in multiple places (Xiaofei Tan). - Capitalize TLAs in a few comments (Andy Shevchenko). - Correct assorted typos in comments (Tom Saeger). -----BEGIN PGP SIGNATURE----- iQJGBAABCAAwFiEE4fcc61cGeeHD/fCwgsRv/nhiVHEFAmCHAL8SHHJqd0Byand5 c29ja2kubmV0AAoJEILEb/54YlRxZroQAIdFsRUTKmm8st9sdfEtF3QHLS3/EV2x 1GlkL+3yE/WuEFXNd0mAv0MTcV2sNMKGd5oz74zLkciPC2dNR4168Ni6DhGSoELM 0ZMOAu9E12Nyq7/1FdWalLQprtR8OuLVwgC2VckK+f//4vzpZ+6PtGMwAwtImSHK m3WRPimVbgOVJ1UWZjsfIm7kLBD4o4oCx0pdeEl77q0oQKmMdcByUh2YnjwKzFnP 9zqV+SCi3HL4w67HO/uMe7x8isNyWONYXVqOvOkgXi7PeoX9v0XiWSCJ0KnAvbI1 PZokJT8pTrKnFyL3zJS6pU/ZHj7ikFiTc+MfyyPcYRJZ5nBvRjqHKoPOtZ9yfU6n jgt/u3REhqwnHy0ikS8HsP+PWnAJF1Re3sNVvIMnX6XxTIndHCXZEoeldfeC23S9 PmzGA0//iPngiYaOVM5BxIjRi2nRBHlVvzSIACICXDcszA81RHePFIzfjUgW3elp v6kAhkrXYajqrDb7NuvY4MTuuBo8w3q2xWJGu5VlDkNOblM0AExRhXmvp1RW0kL7 +mi5X6xBFEB9M6hEoWKnleaZTXTlFYBreKsMPEEP7N7a5+UZRPedcjX1PflCkOB3 uL5p/+x3br1fkDyK0P7wFf3VqiBXuwFajEdCmyHnizpD6m0oWC6pv9PUGYUCneJ1 JGH5X/3Uu33D =5fuB -----END PGP SIGNATURE----- Merge tag 'acpi-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI updates from Rafael Wysocki: "These update the ACPICA code in the kernel to the most recent upstream revision including (but not limited to) new material introduced in the 6.4 version of the spec, update message printing in the ACPI-related code, address a few issues and clean up code in a number of places. Specifics: - Update ACPICA code in the kernel to upstream revision 20210331 including the following changes: * Add parsing for IVRS IVHD 40h and device entry F0h (Alexander Monakov). * Add new CEDT table for CXL 2.0 and iASL support for it (Ben Widawsky, Bob Moore). * NFIT: add Location Cookie field (Bob Moore). * HMAT: add new fields/flags (Bob Moore). * Add new flags in SRAT (Bob Moore). * PMTT: add new fields/structures (Bob Moore). * Add CSI2Bus resource template (Bob Moore). * iASL: Decode subtable type field for VIOT (Bob Moore). * Fix various typos and spelling mistakes (Colin Ian King). * Add new predefined objects _BPC, _BPS, and _BPT (Erik Kaneda). * Add USB4 capabilities UUID (Erik Kaneda). * Add CXL ACPI device ID and _CBR object (Erik Kaneda). * MADT: add Multiprocessor Wakeup Structure (Erik Kaneda). * PCCT: add support for subtable type 5 (Erik Kaneda). * PPTT: add new version of subtable type 1 (Erik Kaneda). * Add SDEV secure access components (Erik Kaneda). * Add support for PHAT table (Erik Kaneda). * iASL: Add definitions for the VIOT table (Jean-Philippe Brucker). * acpisrc: Add missing conversion for VIOT support (Jean-Philippe Brucker). * IORT: Updates for revision E.b (Shameer Kolothum). - Rearrange message printing in ACPI-related code to avoid using the ACPICA's internal message printing macros outside ACPICA and do some related code cleanups (Rafael Wysocki). - Modify the device enumeration code to turn off all of the unused ACPI power resources at the end (Rafael Wysocki). - Change the ACPI power resources handling code to turn off unused ACPI power resources without checking their status which should not be necessary by the spec (Rafael Wysocki). - Add empty stubs for CPPC-related functions to be used when CONFIG_ACPI_CPPC_LIB is not set (Rafael Wysocki). - Simplify device enumeration code (Rafael Wysocki). - Change device enumeration code to use match_string() for string matching (Andy Shevchenko). - Modify irqresource_disabled() to retain the resouce flags that have been set already (Angela Czubak). - Add native backlight whitelist entry for GA401/GA502/GA503 (Luke Jones). - Modify the ACPI backlight driver to let the native backlight handling take over on hardware-reduced systems (Hans de Goede). - Introduce acpi_dev_get() and switch over the ACPI core code to using it (Andy Shevchenko). - Use kobj_attribute as callback argument instead of a local struct type in the CPPC linrary code (Nathan Chancellor). - Drop unneeded initializatio of a static variable from the ACPI processor driver (Tian Tao). - Drop unnecessary local variable assignment from the ACPI APEI code (Colin Ian King). - Document for_each_acpi_dev_match() macro (Andy Shevchenko). - Address assorted coding style issues in multiple places (Xiaofei Tan). - Capitalize TLAs in a few comments (Andy Shevchenko). - Correct assorted typos in comments (Tom Saeger)" * tag 'acpi-5.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (68 commits) ACPI: video: use native backlight for GA401/GA502/GA503 ACPI: APEI: remove redundant assignment to variable rc ACPI: utils: Capitalize abbreviations in the comments ACPI: utils: Document for_each_acpi_dev_match() macro ACPI: bus: Introduce acpi_dev_get() and reuse it in ACPI code ACPI: scan: Utilize match_string() API resource: Prevent irqresource_disabled() from erasing flags ACPI: CPPC: Replace cppc_attr with kobj_attribute ACPI: scan: Call acpi_get_object_info() from acpi_set_pnp_ids() ACPI: scan: Drop sta argument from acpi_init_device_object() ACPI: scan: Drop sta argument from acpi_add_single_object() ACPI: scan: Rearrange checks in acpi_bus_check_add() ACPI: scan: Fold acpi_bus_type_and_status() into its caller ACPI: video: Check LCD flag on ACPI-reduced-hardware devices ACPI: utils: Add acpi_reduced_hardware() helper ACPI: dock: fix some coding style issues ACPI: sysfs: fix some coding style issues ACPI: PM: add a missed blank line after declarations ACPI: custom_method: fix a coding style issue ACPI: CPPC: fix some coding style issues ...
341 lines
12 KiB
C
341 lines
12 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* ioport.h Definitions of routines for detecting, reserving and
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* allocating system resources.
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*
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* Authors: Linus Torvalds
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*/
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#ifndef _LINUX_IOPORT_H
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#define _LINUX_IOPORT_H
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#ifndef __ASSEMBLY__
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#include <linux/bits.h>
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#include <linux/compiler.h>
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#include <linux/minmax.h>
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#include <linux/types.h>
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/*
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* Resources are tree-like, allowing
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* nesting etc..
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*/
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struct resource {
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resource_size_t start;
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resource_size_t end;
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const char *name;
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unsigned long flags;
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unsigned long desc;
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struct resource *parent, *sibling, *child;
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};
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/*
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* IO resources have these defined flags.
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*
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* PCI devices expose these flags to userspace in the "resource" sysfs file,
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* so don't move them.
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*/
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#define IORESOURCE_BITS 0x000000ff /* Bus-specific bits */
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#define IORESOURCE_TYPE_BITS 0x00001f00 /* Resource type */
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#define IORESOURCE_IO 0x00000100 /* PCI/ISA I/O ports */
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#define IORESOURCE_MEM 0x00000200
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#define IORESOURCE_REG 0x00000300 /* Register offsets */
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#define IORESOURCE_IRQ 0x00000400
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#define IORESOURCE_DMA 0x00000800
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#define IORESOURCE_BUS 0x00001000
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#define IORESOURCE_PREFETCH 0x00002000 /* No side effects */
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#define IORESOURCE_READONLY 0x00004000
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#define IORESOURCE_CACHEABLE 0x00008000
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#define IORESOURCE_RANGELENGTH 0x00010000
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#define IORESOURCE_SHADOWABLE 0x00020000
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#define IORESOURCE_SIZEALIGN 0x00040000 /* size indicates alignment */
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#define IORESOURCE_STARTALIGN 0x00080000 /* start field is alignment */
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#define IORESOURCE_MEM_64 0x00100000
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#define IORESOURCE_WINDOW 0x00200000 /* forwarded by bridge */
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#define IORESOURCE_MUXED 0x00400000 /* Resource is software muxed */
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#define IORESOURCE_EXT_TYPE_BITS 0x01000000 /* Resource extended types */
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#define IORESOURCE_SYSRAM 0x01000000 /* System RAM (modifier) */
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/* IORESOURCE_SYSRAM specific bits. */
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#define IORESOURCE_SYSRAM_DRIVER_MANAGED 0x02000000 /* Always detected via a driver. */
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#define IORESOURCE_SYSRAM_MERGEABLE 0x04000000 /* Resource can be merged. */
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#define IORESOURCE_EXCLUSIVE 0x08000000 /* Userland may not map this resource */
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#define IORESOURCE_DISABLED 0x10000000
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#define IORESOURCE_UNSET 0x20000000 /* No address assigned yet */
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#define IORESOURCE_AUTO 0x40000000
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#define IORESOURCE_BUSY 0x80000000 /* Driver has marked this resource busy */
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/* I/O resource extended types */
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#define IORESOURCE_SYSTEM_RAM (IORESOURCE_MEM|IORESOURCE_SYSRAM)
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/* PnP IRQ specific bits (IORESOURCE_BITS) */
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#define IORESOURCE_IRQ_HIGHEDGE (1<<0)
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#define IORESOURCE_IRQ_LOWEDGE (1<<1)
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#define IORESOURCE_IRQ_HIGHLEVEL (1<<2)
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#define IORESOURCE_IRQ_LOWLEVEL (1<<3)
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#define IORESOURCE_IRQ_SHAREABLE (1<<4)
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#define IORESOURCE_IRQ_OPTIONAL (1<<5)
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/* PnP DMA specific bits (IORESOURCE_BITS) */
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#define IORESOURCE_DMA_TYPE_MASK (3<<0)
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#define IORESOURCE_DMA_8BIT (0<<0)
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#define IORESOURCE_DMA_8AND16BIT (1<<0)
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#define IORESOURCE_DMA_16BIT (2<<0)
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#define IORESOURCE_DMA_MASTER (1<<2)
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#define IORESOURCE_DMA_BYTE (1<<3)
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#define IORESOURCE_DMA_WORD (1<<4)
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#define IORESOURCE_DMA_SPEED_MASK (3<<6)
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#define IORESOURCE_DMA_COMPATIBLE (0<<6)
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#define IORESOURCE_DMA_TYPEA (1<<6)
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#define IORESOURCE_DMA_TYPEB (2<<6)
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#define IORESOURCE_DMA_TYPEF (3<<6)
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/* PnP memory I/O specific bits (IORESOURCE_BITS) */
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#define IORESOURCE_MEM_WRITEABLE (1<<0) /* dup: IORESOURCE_READONLY */
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#define IORESOURCE_MEM_CACHEABLE (1<<1) /* dup: IORESOURCE_CACHEABLE */
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#define IORESOURCE_MEM_RANGELENGTH (1<<2) /* dup: IORESOURCE_RANGELENGTH */
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#define IORESOURCE_MEM_TYPE_MASK (3<<3)
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#define IORESOURCE_MEM_8BIT (0<<3)
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#define IORESOURCE_MEM_16BIT (1<<3)
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#define IORESOURCE_MEM_8AND16BIT (2<<3)
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#define IORESOURCE_MEM_32BIT (3<<3)
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#define IORESOURCE_MEM_SHADOWABLE (1<<5) /* dup: IORESOURCE_SHADOWABLE */
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#define IORESOURCE_MEM_EXPANSIONROM (1<<6)
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#define IORESOURCE_MEM_NONPOSTED (1<<7)
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/* PnP I/O specific bits (IORESOURCE_BITS) */
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#define IORESOURCE_IO_16BIT_ADDR (1<<0)
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#define IORESOURCE_IO_FIXED (1<<1)
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#define IORESOURCE_IO_SPARSE (1<<2)
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/* PCI ROM control bits (IORESOURCE_BITS) */
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#define IORESOURCE_ROM_ENABLE (1<<0) /* ROM is enabled, same as PCI_ROM_ADDRESS_ENABLE */
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#define IORESOURCE_ROM_SHADOW (1<<1) /* Use RAM image, not ROM BAR */
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/* PCI control bits. Shares IORESOURCE_BITS with above PCI ROM. */
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#define IORESOURCE_PCI_FIXED (1<<4) /* Do not move resource */
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#define IORESOURCE_PCI_EA_BEI (1<<5) /* BAR Equivalent Indicator */
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/*
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* I/O Resource Descriptors
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*
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* Descriptors are used by walk_iomem_res_desc() and region_intersects()
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* for searching a specific resource range in the iomem table. Assign
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* a new descriptor when a resource range supports the search interfaces.
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* Otherwise, resource.desc must be set to IORES_DESC_NONE (0).
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*/
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enum {
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IORES_DESC_NONE = 0,
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IORES_DESC_CRASH_KERNEL = 1,
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IORES_DESC_ACPI_TABLES = 2,
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IORES_DESC_ACPI_NV_STORAGE = 3,
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IORES_DESC_PERSISTENT_MEMORY = 4,
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IORES_DESC_PERSISTENT_MEMORY_LEGACY = 5,
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IORES_DESC_DEVICE_PRIVATE_MEMORY = 6,
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IORES_DESC_RESERVED = 7,
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IORES_DESC_SOFT_RESERVED = 8,
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};
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/*
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* Flags controlling ioremap() behavior.
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*/
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enum {
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IORES_MAP_SYSTEM_RAM = BIT(0),
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IORES_MAP_ENCRYPTED = BIT(1),
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};
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/* helpers to define resources */
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#define DEFINE_RES_NAMED(_start, _size, _name, _flags) \
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{ \
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.start = (_start), \
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.end = (_start) + (_size) - 1, \
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.name = (_name), \
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.flags = (_flags), \
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.desc = IORES_DESC_NONE, \
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}
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#define DEFINE_RES_IO_NAMED(_start, _size, _name) \
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DEFINE_RES_NAMED((_start), (_size), (_name), IORESOURCE_IO)
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#define DEFINE_RES_IO(_start, _size) \
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DEFINE_RES_IO_NAMED((_start), (_size), NULL)
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#define DEFINE_RES_MEM_NAMED(_start, _size, _name) \
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DEFINE_RES_NAMED((_start), (_size), (_name), IORESOURCE_MEM)
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#define DEFINE_RES_MEM(_start, _size) \
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DEFINE_RES_MEM_NAMED((_start), (_size), NULL)
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#define DEFINE_RES_IRQ_NAMED(_irq, _name) \
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DEFINE_RES_NAMED((_irq), 1, (_name), IORESOURCE_IRQ)
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#define DEFINE_RES_IRQ(_irq) \
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DEFINE_RES_IRQ_NAMED((_irq), NULL)
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#define DEFINE_RES_DMA_NAMED(_dma, _name) \
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DEFINE_RES_NAMED((_dma), 1, (_name), IORESOURCE_DMA)
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#define DEFINE_RES_DMA(_dma) \
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DEFINE_RES_DMA_NAMED((_dma), NULL)
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/* PC/ISA/whatever - the normal PC address spaces: IO and memory */
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extern struct resource ioport_resource;
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extern struct resource iomem_resource;
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extern struct resource *request_resource_conflict(struct resource *root, struct resource *new);
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extern int request_resource(struct resource *root, struct resource *new);
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extern int release_resource(struct resource *new);
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void release_child_resources(struct resource *new);
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extern void reserve_region_with_split(struct resource *root,
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resource_size_t start, resource_size_t end,
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const char *name);
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extern struct resource *insert_resource_conflict(struct resource *parent, struct resource *new);
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extern int insert_resource(struct resource *parent, struct resource *new);
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extern void insert_resource_expand_to_fit(struct resource *root, struct resource *new);
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extern int remove_resource(struct resource *old);
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extern void arch_remove_reservations(struct resource *avail);
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extern int allocate_resource(struct resource *root, struct resource *new,
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resource_size_t size, resource_size_t min,
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resource_size_t max, resource_size_t align,
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resource_size_t (*alignf)(void *,
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const struct resource *,
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resource_size_t,
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resource_size_t),
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void *alignf_data);
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struct resource *lookup_resource(struct resource *root, resource_size_t start);
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int adjust_resource(struct resource *res, resource_size_t start,
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resource_size_t size);
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resource_size_t resource_alignment(struct resource *res);
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static inline resource_size_t resource_size(const struct resource *res)
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{
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return res->end - res->start + 1;
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}
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static inline unsigned long resource_type(const struct resource *res)
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{
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return res->flags & IORESOURCE_TYPE_BITS;
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}
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static inline unsigned long resource_ext_type(const struct resource *res)
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{
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return res->flags & IORESOURCE_EXT_TYPE_BITS;
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}
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/* True iff r1 completely contains r2 */
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static inline bool resource_contains(struct resource *r1, struct resource *r2)
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{
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if (resource_type(r1) != resource_type(r2))
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return false;
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if (r1->flags & IORESOURCE_UNSET || r2->flags & IORESOURCE_UNSET)
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return false;
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return r1->start <= r2->start && r1->end >= r2->end;
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}
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/* True if any part of r1 overlaps r2 */
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static inline bool resource_overlaps(struct resource *r1, struct resource *r2)
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{
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return r1->start <= r2->end && r1->end >= r2->start;
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}
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static inline bool
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resource_intersection(struct resource *r1, struct resource *r2, struct resource *r)
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{
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if (!resource_overlaps(r1, r2))
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return false;
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r->start = max(r1->start, r2->start);
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r->end = min(r1->end, r2->end);
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return true;
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}
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static inline bool
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resource_union(struct resource *r1, struct resource *r2, struct resource *r)
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{
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if (!resource_overlaps(r1, r2))
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return false;
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r->start = min(r1->start, r2->start);
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r->end = max(r1->end, r2->end);
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return true;
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}
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/* Convenience shorthand with allocation */
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#define request_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name), 0)
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#define request_muxed_region(start,n,name) __request_region(&ioport_resource, (start), (n), (name), IORESOURCE_MUXED)
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#define __request_mem_region(start,n,name, excl) __request_region(&iomem_resource, (start), (n), (name), excl)
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#define request_mem_region(start,n,name) __request_region(&iomem_resource, (start), (n), (name), 0)
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#define request_mem_region_exclusive(start,n,name) \
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__request_region(&iomem_resource, (start), (n), (name), IORESOURCE_EXCLUSIVE)
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#define rename_region(region, newname) do { (region)->name = (newname); } while (0)
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extern struct resource * __request_region(struct resource *,
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resource_size_t start,
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resource_size_t n,
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const char *name, int flags);
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/* Compatibility cruft */
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#define release_region(start,n) __release_region(&ioport_resource, (start), (n))
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#define release_mem_region(start,n) __release_region(&iomem_resource, (start), (n))
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extern void __release_region(struct resource *, resource_size_t,
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resource_size_t);
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#ifdef CONFIG_MEMORY_HOTREMOVE
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extern void release_mem_region_adjustable(resource_size_t, resource_size_t);
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#endif
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#ifdef CONFIG_MEMORY_HOTPLUG
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extern void merge_system_ram_resource(struct resource *res);
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#endif
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/* Wrappers for managed devices */
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struct device;
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extern int devm_request_resource(struct device *dev, struct resource *root,
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struct resource *new);
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extern void devm_release_resource(struct device *dev, struct resource *new);
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#define devm_request_region(dev,start,n,name) \
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__devm_request_region(dev, &ioport_resource, (start), (n), (name))
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#define devm_request_mem_region(dev,start,n,name) \
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__devm_request_region(dev, &iomem_resource, (start), (n), (name))
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extern struct resource * __devm_request_region(struct device *dev,
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struct resource *parent, resource_size_t start,
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resource_size_t n, const char *name);
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#define devm_release_region(dev, start, n) \
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__devm_release_region(dev, &ioport_resource, (start), (n))
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#define devm_release_mem_region(dev, start, n) \
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__devm_release_region(dev, &iomem_resource, (start), (n))
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extern void __devm_release_region(struct device *dev, struct resource *parent,
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resource_size_t start, resource_size_t n);
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extern int iomem_map_sanity_check(resource_size_t addr, unsigned long size);
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extern bool iomem_is_exclusive(u64 addr);
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extern int
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walk_system_ram_range(unsigned long start_pfn, unsigned long nr_pages,
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void *arg, int (*func)(unsigned long, unsigned long, void *));
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extern int
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walk_mem_res(u64 start, u64 end, void *arg,
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int (*func)(struct resource *, void *));
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extern int
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walk_system_ram_res(u64 start, u64 end, void *arg,
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int (*func)(struct resource *, void *));
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extern int
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walk_iomem_res_desc(unsigned long desc, unsigned long flags, u64 start, u64 end,
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void *arg, int (*func)(struct resource *, void *));
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struct resource *devm_request_free_mem_region(struct device *dev,
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struct resource *base, unsigned long size);
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struct resource *request_free_mem_region(struct resource *base,
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unsigned long size, const char *name);
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static inline void irqresource_disabled(struct resource *res, u32 irq)
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{
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res->start = irq;
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res->end = irq;
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res->flags |= IORESOURCE_IRQ | IORESOURCE_DISABLED | IORESOURCE_UNSET;
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}
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extern struct address_space *iomem_get_mapping(void);
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#endif /* __ASSEMBLY__ */
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#endif /* _LINUX_IOPORT_H */
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