forked from luck/tmp_suning_uos_patched
7d715a6c1a
PCI Express ASPM defines a protocol for PCI Express components in the D0
state to reduce Link power by placing their Links into a low power state
and instructing the other end of the Link to do likewise. This
capability allows hardware-autonomous, dynamic Link power reduction
beyond what is achievable by software-only controlled power management.
However, The device should be configured by software appropriately.
Enabling ASPM will save power, but will introduce device latency.
This patch adds ASPM support in Linux. It introduces a global policy for
ASPM, a sysfs file /sys/module/pcie_aspm/parameters/policy can control
it. The interface can be used as a boot option too. Currently we have
below setting:
-default, BIOS default setting
-powersave, highest power saving mode, enable all available ASPM
state and clock power management
-performance, highest performance, disable ASPM and clock power
management
By default, the 'default' policy is used currently.
In my test, power difference between powersave mode and performance mode
is about 1.3w in a system with 3 PCIE links.
Note: some devices might not work well with aspm, either because chipset
issue or device issue. The patch provide API (pci_disable_link_state),
driver can disable ASPM for specific device.
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
539 lines
26 KiB
C
539 lines
26 KiB
C
/*
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* pci_regs.h
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*
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* PCI standard defines
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* Copyright 1994, Drew Eckhardt
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* Copyright 1997--1999 Martin Mares <mj@ucw.cz>
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*
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* For more information, please consult the following manuals (look at
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* http://www.pcisig.com/ for how to get them):
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*
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* PCI BIOS Specification
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* PCI Local Bus Specification
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* PCI to PCI Bridge Specification
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* PCI System Design Guide
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*
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* For hypertransport information, please consult the following manuals
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* from http://www.hypertransport.org
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*
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* The Hypertransport I/O Link Specification
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*/
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#ifndef LINUX_PCI_REGS_H
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#define LINUX_PCI_REGS_H
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/*
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* Under PCI, each device has 256 bytes of configuration address space,
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* of which the first 64 bytes are standardized as follows:
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*/
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#define PCI_VENDOR_ID 0x00 /* 16 bits */
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#define PCI_DEVICE_ID 0x02 /* 16 bits */
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#define PCI_COMMAND 0x04 /* 16 bits */
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#define PCI_COMMAND_IO 0x1 /* Enable response in I/O space */
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#define PCI_COMMAND_MEMORY 0x2 /* Enable response in Memory space */
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#define PCI_COMMAND_MASTER 0x4 /* Enable bus mastering */
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#define PCI_COMMAND_SPECIAL 0x8 /* Enable response to special cycles */
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#define PCI_COMMAND_INVALIDATE 0x10 /* Use memory write and invalidate */
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#define PCI_COMMAND_VGA_PALETTE 0x20 /* Enable palette snooping */
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#define PCI_COMMAND_PARITY 0x40 /* Enable parity checking */
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#define PCI_COMMAND_WAIT 0x80 /* Enable address/data stepping */
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#define PCI_COMMAND_SERR 0x100 /* Enable SERR */
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#define PCI_COMMAND_FAST_BACK 0x200 /* Enable back-to-back writes */
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#define PCI_COMMAND_INTX_DISABLE 0x400 /* INTx Emulation Disable */
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#define PCI_STATUS 0x06 /* 16 bits */
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#define PCI_STATUS_CAP_LIST 0x10 /* Support Capability List */
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#define PCI_STATUS_66MHZ 0x20 /* Support 66 Mhz PCI 2.1 bus */
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#define PCI_STATUS_UDF 0x40 /* Support User Definable Features [obsolete] */
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#define PCI_STATUS_FAST_BACK 0x80 /* Accept fast-back to back */
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#define PCI_STATUS_PARITY 0x100 /* Detected parity error */
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#define PCI_STATUS_DEVSEL_MASK 0x600 /* DEVSEL timing */
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#define PCI_STATUS_DEVSEL_FAST 0x000
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#define PCI_STATUS_DEVSEL_MEDIUM 0x200
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#define PCI_STATUS_DEVSEL_SLOW 0x400
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#define PCI_STATUS_SIG_TARGET_ABORT 0x800 /* Set on target abort */
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#define PCI_STATUS_REC_TARGET_ABORT 0x1000 /* Master ack of " */
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#define PCI_STATUS_REC_MASTER_ABORT 0x2000 /* Set on master abort */
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#define PCI_STATUS_SIG_SYSTEM_ERROR 0x4000 /* Set when we drive SERR */
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#define PCI_STATUS_DETECTED_PARITY 0x8000 /* Set on parity error */
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#define PCI_CLASS_REVISION 0x08 /* High 24 bits are class, low 8 revision */
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#define PCI_REVISION_ID 0x08 /* Revision ID */
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#define PCI_CLASS_PROG 0x09 /* Reg. Level Programming Interface */
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#define PCI_CLASS_DEVICE 0x0a /* Device class */
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#define PCI_CACHE_LINE_SIZE 0x0c /* 8 bits */
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#define PCI_LATENCY_TIMER 0x0d /* 8 bits */
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#define PCI_HEADER_TYPE 0x0e /* 8 bits */
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#define PCI_HEADER_TYPE_NORMAL 0
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#define PCI_HEADER_TYPE_BRIDGE 1
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#define PCI_HEADER_TYPE_CARDBUS 2
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#define PCI_BIST 0x0f /* 8 bits */
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#define PCI_BIST_CODE_MASK 0x0f /* Return result */
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#define PCI_BIST_START 0x40 /* 1 to start BIST, 2 secs or less */
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#define PCI_BIST_CAPABLE 0x80 /* 1 if BIST capable */
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/*
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* Base addresses specify locations in memory or I/O space.
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* Decoded size can be determined by writing a value of
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* 0xffffffff to the register, and reading it back. Only
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* 1 bits are decoded.
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*/
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#define PCI_BASE_ADDRESS_0 0x10 /* 32 bits */
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#define PCI_BASE_ADDRESS_1 0x14 /* 32 bits [htype 0,1 only] */
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#define PCI_BASE_ADDRESS_2 0x18 /* 32 bits [htype 0 only] */
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#define PCI_BASE_ADDRESS_3 0x1c /* 32 bits */
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#define PCI_BASE_ADDRESS_4 0x20 /* 32 bits */
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#define PCI_BASE_ADDRESS_5 0x24 /* 32 bits */
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#define PCI_BASE_ADDRESS_SPACE 0x01 /* 0 = memory, 1 = I/O */
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#define PCI_BASE_ADDRESS_SPACE_IO 0x01
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#define PCI_BASE_ADDRESS_SPACE_MEMORY 0x00
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#define PCI_BASE_ADDRESS_MEM_TYPE_MASK 0x06
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#define PCI_BASE_ADDRESS_MEM_TYPE_32 0x00 /* 32 bit address */
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#define PCI_BASE_ADDRESS_MEM_TYPE_1M 0x02 /* Below 1M [obsolete] */
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#define PCI_BASE_ADDRESS_MEM_TYPE_64 0x04 /* 64 bit address */
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#define PCI_BASE_ADDRESS_MEM_PREFETCH 0x08 /* prefetchable? */
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#define PCI_BASE_ADDRESS_MEM_MASK (~0x0fUL)
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#define PCI_BASE_ADDRESS_IO_MASK (~0x03UL)
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/* bit 1 is reserved if address_space = 1 */
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/* Header type 0 (normal devices) */
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#define PCI_CARDBUS_CIS 0x28
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#define PCI_SUBSYSTEM_VENDOR_ID 0x2c
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#define PCI_SUBSYSTEM_ID 0x2e
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#define PCI_ROM_ADDRESS 0x30 /* Bits 31..11 are address, 10..1 reserved */
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#define PCI_ROM_ADDRESS_ENABLE 0x01
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#define PCI_ROM_ADDRESS_MASK (~0x7ffUL)
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#define PCI_CAPABILITY_LIST 0x34 /* Offset of first capability list entry */
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/* 0x35-0x3b are reserved */
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#define PCI_INTERRUPT_LINE 0x3c /* 8 bits */
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#define PCI_INTERRUPT_PIN 0x3d /* 8 bits */
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#define PCI_MIN_GNT 0x3e /* 8 bits */
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#define PCI_MAX_LAT 0x3f /* 8 bits */
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/* Header type 1 (PCI-to-PCI bridges) */
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#define PCI_PRIMARY_BUS 0x18 /* Primary bus number */
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#define PCI_SECONDARY_BUS 0x19 /* Secondary bus number */
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#define PCI_SUBORDINATE_BUS 0x1a /* Highest bus number behind the bridge */
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#define PCI_SEC_LATENCY_TIMER 0x1b /* Latency timer for secondary interface */
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#define PCI_IO_BASE 0x1c /* I/O range behind the bridge */
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#define PCI_IO_LIMIT 0x1d
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#define PCI_IO_RANGE_TYPE_MASK 0x0fUL /* I/O bridging type */
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#define PCI_IO_RANGE_TYPE_16 0x00
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#define PCI_IO_RANGE_TYPE_32 0x01
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#define PCI_IO_RANGE_MASK (~0x0fUL)
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#define PCI_SEC_STATUS 0x1e /* Secondary status register, only bit 14 used */
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#define PCI_MEMORY_BASE 0x20 /* Memory range behind */
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#define PCI_MEMORY_LIMIT 0x22
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#define PCI_MEMORY_RANGE_TYPE_MASK 0x0fUL
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#define PCI_MEMORY_RANGE_MASK (~0x0fUL)
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#define PCI_PREF_MEMORY_BASE 0x24 /* Prefetchable memory range behind */
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#define PCI_PREF_MEMORY_LIMIT 0x26
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#define PCI_PREF_RANGE_TYPE_MASK 0x0fUL
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#define PCI_PREF_RANGE_TYPE_32 0x00
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#define PCI_PREF_RANGE_TYPE_64 0x01
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#define PCI_PREF_RANGE_MASK (~0x0fUL)
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#define PCI_PREF_BASE_UPPER32 0x28 /* Upper half of prefetchable memory range */
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#define PCI_PREF_LIMIT_UPPER32 0x2c
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#define PCI_IO_BASE_UPPER16 0x30 /* Upper half of I/O addresses */
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#define PCI_IO_LIMIT_UPPER16 0x32
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/* 0x34 same as for htype 0 */
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/* 0x35-0x3b is reserved */
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#define PCI_ROM_ADDRESS1 0x38 /* Same as PCI_ROM_ADDRESS, but for htype 1 */
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/* 0x3c-0x3d are same as for htype 0 */
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#define PCI_BRIDGE_CONTROL 0x3e
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#define PCI_BRIDGE_CTL_PARITY 0x01 /* Enable parity detection on secondary interface */
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#define PCI_BRIDGE_CTL_SERR 0x02 /* The same for SERR forwarding */
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#define PCI_BRIDGE_CTL_ISA 0x04 /* Enable ISA mode */
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#define PCI_BRIDGE_CTL_VGA 0x08 /* Forward VGA addresses */
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#define PCI_BRIDGE_CTL_MASTER_ABORT 0x20 /* Report master aborts */
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#define PCI_BRIDGE_CTL_BUS_RESET 0x40 /* Secondary bus reset */
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#define PCI_BRIDGE_CTL_FAST_BACK 0x80 /* Fast Back2Back enabled on secondary interface */
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/* Header type 2 (CardBus bridges) */
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#define PCI_CB_CAPABILITY_LIST 0x14
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/* 0x15 reserved */
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#define PCI_CB_SEC_STATUS 0x16 /* Secondary status */
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#define PCI_CB_PRIMARY_BUS 0x18 /* PCI bus number */
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#define PCI_CB_CARD_BUS 0x19 /* CardBus bus number */
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#define PCI_CB_SUBORDINATE_BUS 0x1a /* Subordinate bus number */
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#define PCI_CB_LATENCY_TIMER 0x1b /* CardBus latency timer */
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#define PCI_CB_MEMORY_BASE_0 0x1c
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#define PCI_CB_MEMORY_LIMIT_0 0x20
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#define PCI_CB_MEMORY_BASE_1 0x24
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#define PCI_CB_MEMORY_LIMIT_1 0x28
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#define PCI_CB_IO_BASE_0 0x2c
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#define PCI_CB_IO_BASE_0_HI 0x2e
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#define PCI_CB_IO_LIMIT_0 0x30
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#define PCI_CB_IO_LIMIT_0_HI 0x32
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#define PCI_CB_IO_BASE_1 0x34
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#define PCI_CB_IO_BASE_1_HI 0x36
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#define PCI_CB_IO_LIMIT_1 0x38
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#define PCI_CB_IO_LIMIT_1_HI 0x3a
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#define PCI_CB_IO_RANGE_MASK (~0x03UL)
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/* 0x3c-0x3d are same as for htype 0 */
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#define PCI_CB_BRIDGE_CONTROL 0x3e
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#define PCI_CB_BRIDGE_CTL_PARITY 0x01 /* Similar to standard bridge control register */
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#define PCI_CB_BRIDGE_CTL_SERR 0x02
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#define PCI_CB_BRIDGE_CTL_ISA 0x04
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#define PCI_CB_BRIDGE_CTL_VGA 0x08
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#define PCI_CB_BRIDGE_CTL_MASTER_ABORT 0x20
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#define PCI_CB_BRIDGE_CTL_CB_RESET 0x40 /* CardBus reset */
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#define PCI_CB_BRIDGE_CTL_16BIT_INT 0x80 /* Enable interrupt for 16-bit cards */
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#define PCI_CB_BRIDGE_CTL_PREFETCH_MEM0 0x100 /* Prefetch enable for both memory regions */
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#define PCI_CB_BRIDGE_CTL_PREFETCH_MEM1 0x200
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#define PCI_CB_BRIDGE_CTL_POST_WRITES 0x400
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#define PCI_CB_SUBSYSTEM_VENDOR_ID 0x40
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#define PCI_CB_SUBSYSTEM_ID 0x42
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#define PCI_CB_LEGACY_MODE_BASE 0x44 /* 16-bit PC Card legacy mode base address (ExCa) */
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/* 0x48-0x7f reserved */
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/* Capability lists */
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#define PCI_CAP_LIST_ID 0 /* Capability ID */
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#define PCI_CAP_ID_PM 0x01 /* Power Management */
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#define PCI_CAP_ID_AGP 0x02 /* Accelerated Graphics Port */
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#define PCI_CAP_ID_VPD 0x03 /* Vital Product Data */
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#define PCI_CAP_ID_SLOTID 0x04 /* Slot Identification */
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#define PCI_CAP_ID_MSI 0x05 /* Message Signalled Interrupts */
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#define PCI_CAP_ID_CHSWP 0x06 /* CompactPCI HotSwap */
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#define PCI_CAP_ID_PCIX 0x07 /* PCI-X */
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#define PCI_CAP_ID_HT 0x08 /* HyperTransport */
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#define PCI_CAP_ID_VNDR 0x09 /* Vendor specific */
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#define PCI_CAP_ID_DBG 0x0A /* Debug port */
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#define PCI_CAP_ID_CCRC 0x0B /* CompactPCI Central Resource Control */
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#define PCI_CAP_ID_SHPC 0x0C /* PCI Standard Hot-Plug Controller */
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#define PCI_CAP_ID_SSVID 0x0D /* Bridge subsystem vendor/device ID */
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#define PCI_CAP_ID_AGP3 0x0E /* AGP Target PCI-PCI bridge */
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#define PCI_CAP_ID_EXP 0x10 /* PCI Express */
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#define PCI_CAP_ID_MSIX 0x11 /* MSI-X */
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#define PCI_CAP_LIST_NEXT 1 /* Next capability in the list */
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#define PCI_CAP_FLAGS 2 /* Capability defined flags (16 bits) */
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#define PCI_CAP_SIZEOF 4
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/* Power Management Registers */
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#define PCI_PM_PMC 2 /* PM Capabilities Register */
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#define PCI_PM_CAP_VER_MASK 0x0007 /* Version */
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#define PCI_PM_CAP_PME_CLOCK 0x0008 /* PME clock required */
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#define PCI_PM_CAP_RESERVED 0x0010 /* Reserved field */
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#define PCI_PM_CAP_DSI 0x0020 /* Device specific initialization */
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#define PCI_PM_CAP_AUX_POWER 0x01C0 /* Auxilliary power support mask */
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#define PCI_PM_CAP_D1 0x0200 /* D1 power state support */
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#define PCI_PM_CAP_D2 0x0400 /* D2 power state support */
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#define PCI_PM_CAP_PME 0x0800 /* PME pin supported */
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#define PCI_PM_CAP_PME_MASK 0xF800 /* PME Mask of all supported states */
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#define PCI_PM_CAP_PME_D0 0x0800 /* PME# from D0 */
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#define PCI_PM_CAP_PME_D1 0x1000 /* PME# from D1 */
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#define PCI_PM_CAP_PME_D2 0x2000 /* PME# from D2 */
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#define PCI_PM_CAP_PME_D3 0x4000 /* PME# from D3 (hot) */
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#define PCI_PM_CAP_PME_D3cold 0x8000 /* PME# from D3 (cold) */
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#define PCI_PM_CTRL 4 /* PM control and status register */
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#define PCI_PM_CTRL_STATE_MASK 0x0003 /* Current power state (D0 to D3) */
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#define PCI_PM_CTRL_NO_SOFT_RESET 0x0004 /* No reset for D3hot->D0 */
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#define PCI_PM_CTRL_PME_ENABLE 0x0100 /* PME pin enable */
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#define PCI_PM_CTRL_DATA_SEL_MASK 0x1e00 /* Data select (??) */
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#define PCI_PM_CTRL_DATA_SCALE_MASK 0x6000 /* Data scale (??) */
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#define PCI_PM_CTRL_PME_STATUS 0x8000 /* PME pin status */
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#define PCI_PM_PPB_EXTENSIONS 6 /* PPB support extensions (??) */
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#define PCI_PM_PPB_B2_B3 0x40 /* Stop clock when in D3hot (??) */
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#define PCI_PM_BPCC_ENABLE 0x80 /* Bus power/clock control enable (??) */
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#define PCI_PM_DATA_REGISTER 7 /* (??) */
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#define PCI_PM_SIZEOF 8
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/* AGP registers */
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#define PCI_AGP_VERSION 2 /* BCD version number */
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#define PCI_AGP_RFU 3 /* Rest of capability flags */
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#define PCI_AGP_STATUS 4 /* Status register */
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#define PCI_AGP_STATUS_RQ_MASK 0xff000000 /* Maximum number of requests - 1 */
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#define PCI_AGP_STATUS_SBA 0x0200 /* Sideband addressing supported */
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#define PCI_AGP_STATUS_64BIT 0x0020 /* 64-bit addressing supported */
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#define PCI_AGP_STATUS_FW 0x0010 /* FW transfers supported */
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#define PCI_AGP_STATUS_RATE4 0x0004 /* 4x transfer rate supported */
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#define PCI_AGP_STATUS_RATE2 0x0002 /* 2x transfer rate supported */
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#define PCI_AGP_STATUS_RATE1 0x0001 /* 1x transfer rate supported */
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#define PCI_AGP_COMMAND 8 /* Control register */
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#define PCI_AGP_COMMAND_RQ_MASK 0xff000000 /* Master: Maximum number of requests */
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#define PCI_AGP_COMMAND_SBA 0x0200 /* Sideband addressing enabled */
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#define PCI_AGP_COMMAND_AGP 0x0100 /* Allow processing of AGP transactions */
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#define PCI_AGP_COMMAND_64BIT 0x0020 /* Allow processing of 64-bit addresses */
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#define PCI_AGP_COMMAND_FW 0x0010 /* Force FW transfers */
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#define PCI_AGP_COMMAND_RATE4 0x0004 /* Use 4x rate */
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#define PCI_AGP_COMMAND_RATE2 0x0002 /* Use 2x rate */
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#define PCI_AGP_COMMAND_RATE1 0x0001 /* Use 1x rate */
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#define PCI_AGP_SIZEOF 12
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/* Vital Product Data */
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#define PCI_VPD_ADDR 2 /* Address to access (15 bits!) */
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#define PCI_VPD_ADDR_MASK 0x7fff /* Address mask */
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#define PCI_VPD_ADDR_F 0x8000 /* Write 0, 1 indicates completion */
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#define PCI_VPD_DATA 4 /* 32-bits of data returned here */
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/* Slot Identification */
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#define PCI_SID_ESR 2 /* Expansion Slot Register */
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#define PCI_SID_ESR_NSLOTS 0x1f /* Number of expansion slots available */
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#define PCI_SID_ESR_FIC 0x20 /* First In Chassis Flag */
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#define PCI_SID_CHASSIS_NR 3 /* Chassis Number */
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/* Message Signalled Interrupts registers */
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#define PCI_MSI_FLAGS 2 /* Various flags */
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#define PCI_MSI_FLAGS_64BIT 0x80 /* 64-bit addresses allowed */
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#define PCI_MSI_FLAGS_QSIZE 0x70 /* Message queue size configured */
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#define PCI_MSI_FLAGS_QMASK 0x0e /* Maximum queue size available */
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#define PCI_MSI_FLAGS_ENABLE 0x01 /* MSI feature enabled */
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#define PCI_MSI_FLAGS_MASKBIT 0x100 /* 64-bit mask bits allowed */
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#define PCI_MSI_RFU 3 /* Rest of capability flags */
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#define PCI_MSI_ADDRESS_LO 4 /* Lower 32 bits */
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#define PCI_MSI_ADDRESS_HI 8 /* Upper 32 bits (if PCI_MSI_FLAGS_64BIT set) */
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#define PCI_MSI_DATA_32 8 /* 16 bits of data for 32-bit devices */
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#define PCI_MSI_DATA_64 12 /* 16 bits of data for 64-bit devices */
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#define PCI_MSI_MASK_BIT 16 /* Mask bits register */
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/* MSI-X registers (these are at offset PCI_MSIX_FLAGS) */
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#define PCI_MSIX_FLAGS 2
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#define PCI_MSIX_FLAGS_QSIZE 0x7FF
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#define PCI_MSIX_FLAGS_ENABLE (1 << 15)
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#define PCI_MSIX_FLAGS_MASKALL (1 << 14)
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#define PCI_MSIX_FLAGS_BIRMASK (7 << 0)
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#define PCI_MSIX_FLAGS_BITMASK (1 << 0)
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/* CompactPCI Hotswap Register */
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#define PCI_CHSWP_CSR 2 /* Control and Status Register */
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#define PCI_CHSWP_DHA 0x01 /* Device Hiding Arm */
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#define PCI_CHSWP_EIM 0x02 /* ENUM# Signal Mask */
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#define PCI_CHSWP_PIE 0x04 /* Pending Insert or Extract */
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#define PCI_CHSWP_LOO 0x08 /* LED On / Off */
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#define PCI_CHSWP_PI 0x30 /* Programming Interface */
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#define PCI_CHSWP_EXT 0x40 /* ENUM# status - extraction */
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#define PCI_CHSWP_INS 0x80 /* ENUM# status - insertion */
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/* PCI-X registers */
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#define PCI_X_CMD 2 /* Modes & Features */
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#define PCI_X_CMD_DPERR_E 0x0001 /* Data Parity Error Recovery Enable */
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#define PCI_X_CMD_ERO 0x0002 /* Enable Relaxed Ordering */
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#define PCI_X_CMD_READ_512 0x0000 /* 512 byte maximum read byte count */
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#define PCI_X_CMD_READ_1K 0x0004 /* 1Kbyte maximum read byte count */
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#define PCI_X_CMD_READ_2K 0x0008 /* 2Kbyte maximum read byte count */
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#define PCI_X_CMD_READ_4K 0x000c /* 4Kbyte maximum read byte count */
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#define PCI_X_CMD_MAX_READ 0x000c /* Max Memory Read Byte Count */
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/* Max # of outstanding split transactions */
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#define PCI_X_CMD_SPLIT_1 0x0000 /* Max 1 */
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#define PCI_X_CMD_SPLIT_2 0x0010 /* Max 2 */
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#define PCI_X_CMD_SPLIT_3 0x0020 /* Max 3 */
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#define PCI_X_CMD_SPLIT_4 0x0030 /* Max 4 */
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#define PCI_X_CMD_SPLIT_8 0x0040 /* Max 8 */
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#define PCI_X_CMD_SPLIT_12 0x0050 /* Max 12 */
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#define PCI_X_CMD_SPLIT_16 0x0060 /* Max 16 */
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#define PCI_X_CMD_SPLIT_32 0x0070 /* Max 32 */
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#define PCI_X_CMD_MAX_SPLIT 0x0070 /* Max Outstanding Split Transactions */
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#define PCI_X_CMD_VERSION(x) (((x) >> 12) & 3) /* Version */
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#define PCI_X_STATUS 4 /* PCI-X capabilities */
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#define PCI_X_STATUS_DEVFN 0x000000ff /* A copy of devfn */
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#define PCI_X_STATUS_BUS 0x0000ff00 /* A copy of bus nr */
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#define PCI_X_STATUS_64BIT 0x00010000 /* 64-bit device */
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#define PCI_X_STATUS_133MHZ 0x00020000 /* 133 MHz capable */
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#define PCI_X_STATUS_SPL_DISC 0x00040000 /* Split Completion Discarded */
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#define PCI_X_STATUS_UNX_SPL 0x00080000 /* Unexpected Split Completion */
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#define PCI_X_STATUS_COMPLEX 0x00100000 /* Device Complexity */
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#define PCI_X_STATUS_MAX_READ 0x00600000 /* Designed Max Memory Read Count */
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#define PCI_X_STATUS_MAX_SPLIT 0x03800000 /* Designed Max Outstanding Split Transactions */
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#define PCI_X_STATUS_MAX_CUM 0x1c000000 /* Designed Max Cumulative Read Size */
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#define PCI_X_STATUS_SPL_ERR 0x20000000 /* Rcvd Split Completion Error Msg */
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#define PCI_X_STATUS_266MHZ 0x40000000 /* 266 MHz capable */
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#define PCI_X_STATUS_533MHZ 0x80000000 /* 533 MHz capable */
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/* PCI Express capability registers */
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#define PCI_EXP_FLAGS 2 /* Capabilities register */
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#define PCI_EXP_FLAGS_VERS 0x000f /* Capability version */
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#define PCI_EXP_FLAGS_TYPE 0x00f0 /* Device/Port type */
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#define PCI_EXP_TYPE_ENDPOINT 0x0 /* Express Endpoint */
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#define PCI_EXP_TYPE_LEG_END 0x1 /* Legacy Endpoint */
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#define PCI_EXP_TYPE_ROOT_PORT 0x4 /* Root Port */
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#define PCI_EXP_TYPE_UPSTREAM 0x5 /* Upstream Port */
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#define PCI_EXP_TYPE_DOWNSTREAM 0x6 /* Downstream Port */
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#define PCI_EXP_TYPE_PCI_BRIDGE 0x7 /* PCI/PCI-X Bridge */
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#define PCI_EXP_FLAGS_SLOT 0x0100 /* Slot implemented */
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#define PCI_EXP_FLAGS_IRQ 0x3e00 /* Interrupt message number */
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#define PCI_EXP_DEVCAP 4 /* Device capabilities */
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#define PCI_EXP_DEVCAP_PAYLOAD 0x07 /* Max_Payload_Size */
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#define PCI_EXP_DEVCAP_PHANTOM 0x18 /* Phantom functions */
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#define PCI_EXP_DEVCAP_EXT_TAG 0x20 /* Extended tags */
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#define PCI_EXP_DEVCAP_L0S 0x1c0 /* L0s Acceptable Latency */
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#define PCI_EXP_DEVCAP_L1 0xe00 /* L1 Acceptable Latency */
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#define PCI_EXP_DEVCAP_ATN_BUT 0x1000 /* Attention Button Present */
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#define PCI_EXP_DEVCAP_ATN_IND 0x2000 /* Attention Indicator Present */
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#define PCI_EXP_DEVCAP_PWR_IND 0x4000 /* Power Indicator Present */
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#define PCI_EXP_DEVCAP_PWR_VAL 0x3fc0000 /* Slot Power Limit Value */
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#define PCI_EXP_DEVCAP_PWR_SCL 0xc000000 /* Slot Power Limit Scale */
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#define PCI_EXP_DEVCTL 8 /* Device Control */
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#define PCI_EXP_DEVCTL_CERE 0x0001 /* Correctable Error Reporting En. */
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#define PCI_EXP_DEVCTL_NFERE 0x0002 /* Non-Fatal Error Reporting Enable */
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#define PCI_EXP_DEVCTL_FERE 0x0004 /* Fatal Error Reporting Enable */
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#define PCI_EXP_DEVCTL_URRE 0x0008 /* Unsupported Request Reporting En. */
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#define PCI_EXP_DEVCTL_RELAX_EN 0x0010 /* Enable relaxed ordering */
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#define PCI_EXP_DEVCTL_PAYLOAD 0x00e0 /* Max_Payload_Size */
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#define PCI_EXP_DEVCTL_EXT_TAG 0x0100 /* Extended Tag Field Enable */
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#define PCI_EXP_DEVCTL_PHANTOM 0x0200 /* Phantom Functions Enable */
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#define PCI_EXP_DEVCTL_AUX_PME 0x0400 /* Auxiliary Power PM Enable */
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#define PCI_EXP_DEVCTL_NOSNOOP_EN 0x0800 /* Enable No Snoop */
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#define PCI_EXP_DEVCTL_READRQ 0x7000 /* Max_Read_Request_Size */
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#define PCI_EXP_DEVSTA 10 /* Device Status */
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#define PCI_EXP_DEVSTA_CED 0x01 /* Correctable Error Detected */
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#define PCI_EXP_DEVSTA_NFED 0x02 /* Non-Fatal Error Detected */
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#define PCI_EXP_DEVSTA_FED 0x04 /* Fatal Error Detected */
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#define PCI_EXP_DEVSTA_URD 0x08 /* Unsupported Request Detected */
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#define PCI_EXP_DEVSTA_AUXPD 0x10 /* AUX Power Detected */
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#define PCI_EXP_DEVSTA_TRPND 0x20 /* Transactions Pending */
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#define PCI_EXP_LNKCAP 12 /* Link Capabilities */
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#define PCI_EXP_LNKCAP_ASPMS 0xc00 /* ASPM Support */
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#define PCI_EXP_LNKCAP_L0SEL 0x7000 /* L0s Exit Latency */
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#define PCI_EXP_LNKCAP_L1EL 0x38000 /* L1 Exit Latency */
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#define PCI_EXP_LNKCAP_CLKPM 0x40000 /* L1 Clock Power Management */
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#define PCI_EXP_LNKCTL 16 /* Link Control */
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#define PCI_EXP_LNKCTL_RL 0x20 /* Retrain Link */
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#define PCI_EXP_LNKCTL_CCC 0x40 /* Common Clock COnfiguration */
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#define PCI_EXP_LNKCTL_CLKREQ_EN 0x100 /* Enable clkreq */
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#define PCI_EXP_LNKSTA 18 /* Link Status */
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#define PCI_EXP_LNKSTA_LT 0x800 /* Link Training */
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#define PCI_EXP_LNKSTA_SLC 0x1000 /* Slot Clock Configuration */
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#define PCI_EXP_SLTCAP 20 /* Slot Capabilities */
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#define PCI_EXP_SLTCTL 24 /* Slot Control */
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#define PCI_EXP_SLTSTA 26 /* Slot Status */
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#define PCI_EXP_RTCTL 28 /* Root Control */
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#define PCI_EXP_RTCTL_SECEE 0x01 /* System Error on Correctable Error */
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#define PCI_EXP_RTCTL_SENFEE 0x02 /* System Error on Non-Fatal Error */
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#define PCI_EXP_RTCTL_SEFEE 0x04 /* System Error on Fatal Error */
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#define PCI_EXP_RTCTL_PMEIE 0x08 /* PME Interrupt Enable */
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#define PCI_EXP_RTCTL_CRSSVE 0x10 /* CRS Software Visibility Enable */
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#define PCI_EXP_RTCAP 30 /* Root Capabilities */
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#define PCI_EXP_RTSTA 32 /* Root Status */
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/* Extended Capabilities (PCI-X 2.0 and Express) */
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#define PCI_EXT_CAP_ID(header) (header & 0x0000ffff)
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#define PCI_EXT_CAP_VER(header) ((header >> 16) & 0xf)
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#define PCI_EXT_CAP_NEXT(header) ((header >> 20) & 0xffc)
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#define PCI_EXT_CAP_ID_ERR 1
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#define PCI_EXT_CAP_ID_VC 2
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#define PCI_EXT_CAP_ID_DSN 3
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#define PCI_EXT_CAP_ID_PWR 4
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/* Advanced Error Reporting */
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#define PCI_ERR_UNCOR_STATUS 4 /* Uncorrectable Error Status */
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#define PCI_ERR_UNC_TRAIN 0x00000001 /* Training */
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#define PCI_ERR_UNC_DLP 0x00000010 /* Data Link Protocol */
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#define PCI_ERR_UNC_POISON_TLP 0x00001000 /* Poisoned TLP */
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#define PCI_ERR_UNC_FCP 0x00002000 /* Flow Control Protocol */
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#define PCI_ERR_UNC_COMP_TIME 0x00004000 /* Completion Timeout */
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#define PCI_ERR_UNC_COMP_ABORT 0x00008000 /* Completer Abort */
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#define PCI_ERR_UNC_UNX_COMP 0x00010000 /* Unexpected Completion */
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#define PCI_ERR_UNC_RX_OVER 0x00020000 /* Receiver Overflow */
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#define PCI_ERR_UNC_MALF_TLP 0x00040000 /* Malformed TLP */
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#define PCI_ERR_UNC_ECRC 0x00080000 /* ECRC Error Status */
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#define PCI_ERR_UNC_UNSUP 0x00100000 /* Unsupported Request */
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#define PCI_ERR_UNCOR_MASK 8 /* Uncorrectable Error Mask */
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/* Same bits as above */
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#define PCI_ERR_UNCOR_SEVER 12 /* Uncorrectable Error Severity */
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/* Same bits as above */
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#define PCI_ERR_COR_STATUS 16 /* Correctable Error Status */
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#define PCI_ERR_COR_RCVR 0x00000001 /* Receiver Error Status */
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#define PCI_ERR_COR_BAD_TLP 0x00000040 /* Bad TLP Status */
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#define PCI_ERR_COR_BAD_DLLP 0x00000080 /* Bad DLLP Status */
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#define PCI_ERR_COR_REP_ROLL 0x00000100 /* REPLAY_NUM Rollover */
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#define PCI_ERR_COR_REP_TIMER 0x00001000 /* Replay Timer Timeout */
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#define PCI_ERR_COR_MASK 20 /* Correctable Error Mask */
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/* Same bits as above */
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#define PCI_ERR_CAP 24 /* Advanced Error Capabilities */
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#define PCI_ERR_CAP_FEP(x) ((x) & 31) /* First Error Pointer */
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#define PCI_ERR_CAP_ECRC_GENC 0x00000020 /* ECRC Generation Capable */
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#define PCI_ERR_CAP_ECRC_GENE 0x00000040 /* ECRC Generation Enable */
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#define PCI_ERR_CAP_ECRC_CHKC 0x00000080 /* ECRC Check Capable */
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#define PCI_ERR_CAP_ECRC_CHKE 0x00000100 /* ECRC Check Enable */
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#define PCI_ERR_HEADER_LOG 28 /* Header Log Register (16 bytes) */
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#define PCI_ERR_ROOT_COMMAND 44 /* Root Error Command */
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/* Correctable Err Reporting Enable */
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#define PCI_ERR_ROOT_CMD_COR_EN 0x00000001
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/* Non-fatal Err Reporting Enable */
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#define PCI_ERR_ROOT_CMD_NONFATAL_EN 0x00000002
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/* Fatal Err Reporting Enable */
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#define PCI_ERR_ROOT_CMD_FATAL_EN 0x00000004
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#define PCI_ERR_ROOT_STATUS 48
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#define PCI_ERR_ROOT_COR_RCV 0x00000001 /* ERR_COR Received */
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/* Multi ERR_COR Received */
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#define PCI_ERR_ROOT_MULTI_COR_RCV 0x00000002
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/* ERR_FATAL/NONFATAL Recevied */
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#define PCI_ERR_ROOT_UNCOR_RCV 0x00000004
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/* Multi ERR_FATAL/NONFATAL Recevied */
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#define PCI_ERR_ROOT_MULTI_UNCOR_RCV 0x00000008
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#define PCI_ERR_ROOT_FIRST_FATAL 0x00000010 /* First Fatal */
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#define PCI_ERR_ROOT_NONFATAL_RCV 0x00000020 /* Non-Fatal Received */
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#define PCI_ERR_ROOT_FATAL_RCV 0x00000040 /* Fatal Received */
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#define PCI_ERR_ROOT_COR_SRC 52
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#define PCI_ERR_ROOT_SRC 54
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/* Virtual Channel */
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#define PCI_VC_PORT_REG1 4
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#define PCI_VC_PORT_REG2 8
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#define PCI_VC_PORT_CTRL 12
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#define PCI_VC_PORT_STATUS 14
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#define PCI_VC_RES_CAP 16
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#define PCI_VC_RES_CTRL 20
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#define PCI_VC_RES_STATUS 26
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/* Power Budgeting */
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#define PCI_PWR_DSR 4 /* Data Select Register */
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#define PCI_PWR_DATA 8 /* Data Register */
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#define PCI_PWR_DATA_BASE(x) ((x) & 0xff) /* Base Power */
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#define PCI_PWR_DATA_SCALE(x) (((x) >> 8) & 3) /* Data Scale */
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#define PCI_PWR_DATA_PM_SUB(x) (((x) >> 10) & 7) /* PM Sub State */
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#define PCI_PWR_DATA_PM_STATE(x) (((x) >> 13) & 3) /* PM State */
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#define PCI_PWR_DATA_TYPE(x) (((x) >> 15) & 7) /* Type */
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#define PCI_PWR_DATA_RAIL(x) (((x) >> 18) & 7) /* Power Rail */
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#define PCI_PWR_CAP 12 /* Capability */
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#define PCI_PWR_CAP_BUDGET(x) ((x) & 1) /* Included in system budget */
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/*
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* Hypertransport sub capability types
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*
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* Unfortunately there are both 3 bit and 5 bit capability types defined
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* in the HT spec, catering for that is a little messy. You probably don't
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* want to use these directly, just use pci_find_ht_capability() and it
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* will do the right thing for you.
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*/
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#define HT_3BIT_CAP_MASK 0xE0
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#define HT_CAPTYPE_SLAVE 0x00 /* Slave/Primary link configuration */
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#define HT_CAPTYPE_HOST 0x20 /* Host/Secondary link configuration */
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#define HT_5BIT_CAP_MASK 0xF8
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#define HT_CAPTYPE_IRQ 0x80 /* IRQ Configuration */
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#define HT_CAPTYPE_REMAPPING_40 0xA0 /* 40 bit address remapping */
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#define HT_CAPTYPE_REMAPPING_64 0xA2 /* 64 bit address remapping */
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#define HT_CAPTYPE_UNITID_CLUMP 0x90 /* Unit ID clumping */
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#define HT_CAPTYPE_EXTCONF 0x98 /* Extended Configuration Space Access */
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#define HT_CAPTYPE_MSI_MAPPING 0xA8 /* MSI Mapping Capability */
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#define HT_MSI_FLAGS 0x02 /* Offset to flags */
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#define HT_MSI_FLAGS_ENABLE 0x1 /* Mapping enable */
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#define HT_MSI_FLAGS_FIXED 0x2 /* Fixed mapping only */
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#define HT_MSI_FIXED_ADDR 0x00000000FEE00000ULL /* Fixed addr */
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#define HT_MSI_ADDR_LO 0x04 /* Offset to low addr bits */
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#define HT_MSI_ADDR_LO_MASK 0xFFF00000 /* Low address bit mask */
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#define HT_MSI_ADDR_HI 0x08 /* Offset to high addr bits */
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#define HT_CAPTYPE_DIRECT_ROUTE 0xB0 /* Direct routing configuration */
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#define HT_CAPTYPE_VCSET 0xB8 /* Virtual Channel configuration */
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#define HT_CAPTYPE_ERROR_RETRY 0xC0 /* Retry on error configuration */
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#define HT_CAPTYPE_GEN3 0xD0 /* Generation 3 hypertransport configuration */
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#define HT_CAPTYPE_PM 0xE0 /* Hypertransport powermanagement configuration */
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#endif /* LINUX_PCI_REGS_H */
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