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linux/drivers/pci/controller/dwc/pcie-designware.h
Linus Torvalds 1c2b4a4c2b Merge tag 'pci-v7.0-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci 
Pull PCI updates from Bjorn Helgaas:
 "Enumeration:

   - Don't try to enable Extended Tags on VFs since that bit is Reserved
     and causes misleading log messages (Håkon Bugge)

   - Initialize Endpoint Read Completion Boundary to match Root Port,
     regardless of ACPI _HPX (Håkon Bugge)

   - Apply _HPX PCIe Setting Record only to AER configuration, and only
     when OS owns PCIe hotplug but not AER, to avoid clobbering Extended
     Tag and Relaxed Ordering settings (Håkon Bugge)

  Resource management:

   - Move CardBus code to setup-cardbus.c and only build it when
     CONFIG_CARDBUS is set (Ilpo Järvinen)

   - Fix bridge window alignment with optional resources, where
     additional alignment requirement was previously lost (Ilpo
     Järvinen)

   - Stop over-estimating bridge window size since they are now assigned
     without any gaps between them (Ilpo Järvinen)

   - Increase resource MAX_IORES_LEVEL to avoid /proc/iomem flattening
     for nested bridges and endpoints (Ilpo Järvinen)

   - Add pbus_mem_size_optional() to handle sizes of optional resources
     (SR-IOV VF BARs, expansion ROMs, bridge windows) (Ilpo Järvinen)

   - Don't claim disabled bridge windows to avoid spurious claim
     failures (Ilpo Järvinen)

  Driver binding:

   - Fix device reference leak in pcie_port_remove_service() (Uwe
     Kleine-König)

   - Move pcie_port_bus_match() and pcie_port_bus_type to PCIe-specific
     portdrv.c (Uwe Kleine-König)

   - Convert portdrv to use pcie_port_bus_type.probe() and .remove()
     callbacks so .probe() and .remove() can eventually be removed from
     struct device_driver (Uwe Kleine-König)

  Error handling:

   - Clear stale errors on reporting agents upon probe so they don't
     look like recent errors (Lukas Wunner)

   - Add generic RAS tracepoint for hotplug events (Shuai Xue)

   - Add RAS tracepoint for link speed changes (Shuai Xue)

  Power management:

   - Avoid redundant delay on transition from D3hot to D3cold if the
     device was already in D3hot (Brian Norris)

   - Prevent runtime suspend until devices are fully initialized to
     avoid saving incompletely configured device state (Brian Norris)

  Power control:

   - Add power_on/off callbacks with generic signature to pwrseq,
     tc9563, and slot drivers so they can be used by pwrctrl core
     (Manivannan Sadhasivam)

   - Add PCIe M.2 connector support to the slot pwrctrl driver
     (Manivannan Sadhasivam)

   - Switch to pwrctrl interfaces to create, destroy, and power on/off
     devices, calling them from host controller drivers instead of the
     PCI core (Manivannan Sadhasivam)

   - Drop qcom .assert_perst() callbacks since this is now done by the
     controller driver instead of the pwrctrl driver (Manivannan
     Sadhasivam)

  Virtualization:

   - Remove an incorrect unlock in pci_slot_trylock() error handling
     (Jinhui Guo)

   - Lock the bridge device for slot reset (Keith Busch)

   - Enable ACS after IOMMU configuration on OF platforms so ACS is
     enabled an all devices; previously the first device enumerated
     (typically a Root Port) didn't have ACS enabled (Manivannan
     Sadhasivam)

   - Disable ACS Source Validation for IDT 0x80b5 and 0x8090 switches to
     work around hardware erratum; previously ACS SV was only
     temporarily disabled, which worked for enumeration but not after
     reset (Manivannan Sadhasivam)

  Peer-to-peer DMA:

   - Release per-CPU pgmap ref when vm_insert_page() fails to avoid hang
     when removing the PCI device (Hou Tao)

   - Remove incorrect p2pmem_alloc_mmap() warning about page refcount
     (Hou Tao)

  Endpoint framework:

   - Add configfs sub-groups synchronously to avoid NULL pointer
     dereference when racing with removal (Liu Song)

   - Fix swapped parameters in pci_{primary/secondary}_epc_epf_unlink()
     functions (Manikanta Maddireddy)

  ASPEED PCIe controller driver:

   - Add ASPEED Root Complex DT binding and driver (Jacky Chou)

  Freescale i.MX6 PCIe controller driver:

   - Add DT binding and driver support for an optional external refclock
     in addition to the refclock from the internal PLL (Richard Zhu)

   - Fix CLKREQ# control so host asserts it during enumeration and
     Endpoints can use it afterwards to exit the L1.2 link state
     (Richard Zhu)

  NVIDIA Tegra PCIe controller driver:

   - Export irq_domain_free_irqs() to allow PCI/MSI drivers that tear
     down MSI domains to be built as modules (Aaron Kling)

   - Allow pci-tegra to be built as a module (Aaron Kling)

  NVIDIA Tegra194 PCIe controller driver:

   - Relax Kconfig so tegra194 can be built for platforms beyond
     Tegra194 (Vidya Sagar)

  Qualcomm PCIe controller driver:

   - Merge SC8180x DT binding into SM8150 (Krzysztof Kozlowski)

   - Move SDX55, SDM845, QCS404, IPQ5018, IPQ6018, IPQ8074 Gen3,
     IPQ8074, IPQ4019, IPQ9574, APQ8064, MSM8996, APQ8084 to dedicated
     schema (Krzysztof Kozlowski)

   - Add DT binding and driver support for SA8255p Endpoint being
     configured by firmware (Mrinmay Sarkar)

   - Parse PERST# from all PCIe bridge nodes for future platforms that
     will have PERST# in Switch Downstream Ports as well as in Root
     Ports (Manivannan Sadhasivam)

  Renesas RZ/G3S PCIe controller driver:

   - Use pci_generic_config_write() since the writability provided by
     the custom wrapper is unnecessary (Claudiu Beznea)

  SOPHGO PCIe controller driver:

   - Disable ASPM L0s and L1 on Sophgo 2044 PCIe Root Ports (Inochi
     Amaoto)

  Synopsys DesignWare PCIe controller driver:

   - Extend PCI_FIND_NEXT_CAP() and PCI_FIND_NEXT_EXT_CAP() to return a
     pointer to the preceding Capability, to allow removal of
     Capabilities that are advertised but not fully implemented (Qiang
     Yu)

   - Remove MSI and MSI-X Capabilities in platforms that can't support
     them, so the PCI core automatically falls back to INTx (Qiang Yu)

   - Add ASPM L1.1 and L1.2 Substates context to debugfs ltssm_status
     for drivers that support this (Shawn Lin)

   - Skip PME_Turn_Off broadcast and L2/L3 transition during suspend if
     link is not up to avoid an unnecessary timeout (Manivannan
     Sadhasivam)

   - Revert dw-rockchip, qcom, and DWC core changes that used link-up
     IRQs to trigger enumeration instead of waiting for link to be up
     because the PCI core doesn't allocate bus number space for
     hierarchies that might be attached (Niklas Cassel)

   - Make endpoint iATU entry for MSI permanent instead of programming
     it dynamically, which is slow and racy with respect to other
     concurrent traffic, e.g., eDMA (Koichiro Den)

   - Use iMSI-RX MSI target address when possible to fix endpoints using
     32-bit MSI (Shawn Lin)

   - Allow DWC host controller driver probe to continue if device is not
     found or found but inactive; only fail when there's an error with
     the link (Manivannan Sadhasivam)

   - For controllers like NXP i.MX6QP and i.MX7D, where LTSSM registers
     are not accessible after PME_Turn_Off, simply wait 10ms instead of
     polling for L2/L3 Ready (Richard Zhu)

   - Use multiple iATU entries to map large bridge windows and DMA
     ranges when necessary instead of failing (Samuel Holland)

   - Add EPC dynamic_inbound_mapping feature bit for Endpoint
     Controllers that can update BAR inbound address translation without
     requiring EPF driver to clear/reset the BAR first, and advertise it
     for DWC-based Endpoints (Koichiro Den)

   - Add EPC subrange_mapping feature bit for Endpoint Controllers that
     can map multiple independent inbound regions in a single BAR,
     implement subrange mapping, advertise it for DWC-based Endpoints,
     and add Endpoint selftests for it (Koichiro Den)

   - Make resizable BARs work for Endpoint multi-PF configurations;
     previously it only worked for PF 0 (Aksh Garg)

   - Fix Endpoint non-PF 0 support for BAR configuration, ATU mappings,
     and Address Match Mode (Aksh Garg)

   - Set up iATU when ECAM is enabled; previously IO and MEM outbound
     windows weren't programmed, and ECAM-related iATU entries weren't
     restored after suspend/resume, so config accesses failed (Krishna
     Chaitanya Chundru)

  Miscellaneous:

   - Use system_percpu_wq and WQ_PERCPU to explicitly request per-CPU
     work so WQ_UNBOUND can eventually be removed (Marco Crivellari)"

* tag 'pci-v7.0-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (176 commits)
  PCI/bwctrl: Disable BW controller on Intel P45 using a quirk
  PCI: Disable ACS SV for IDT 0x8090 switch
  PCI: Disable ACS SV for IDT 0x80b5 switch
  PCI: Cache ACS Capabilities register
  PCI: Enable ACS after configuring IOMMU for OF platforms
  PCI: Add ACS quirk for Pericom PI7C9X2G404 switches [12d8:b404]
  PCI: Add ACS quirk for Qualcomm Hamoa & Glymur
  PCI: Use device_lock_assert() to verify device lock is held
  PCI: Use lockdep_assert_held(pci_bus_sem) to verify lock is held
  PCI: Fix pci_slot_lock () device locking
  PCI: Fix pci_slot_trylock() error handling
  PCI: Mark Nvidia GB10 to avoid bus reset
  PCI: Mark ASM1164 SATA controller to avoid bus reset
  PCI: host-generic: Avoid reporting incorrect 'missing reg property' error
  PCI/PME: Replace RMW of Root Status register with direct write
  PCI/AER: Clear stale errors on reporting agents upon probe
  PCI: Don't claim disabled bridge windows
  PCI: rzg3s-host: Fix device node reference leak in rzg3s_pcie_host_parse_port()
  PCI: dwc: Fix missing iATU setup when ECAM is enabled
  PCI: dwc: Clean up iATU index usage in dw_pcie_iatu_setup()
  ...
2026-02-11 17:20:38 -08:00

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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Synopsys DesignWare PCIe host controller driver
*
* Copyright (C) 2013 Samsung Electronics Co., Ltd.
* https://www.samsung.com
*
* Author: Jingoo Han <jg1.han@samsung.com>
*/
#ifndef _PCIE_DESIGNWARE_H
#define _PCIE_DESIGNWARE_H
#include <linux/bitfield.h>
#include <linux/bitops.h>
#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/dma/edma.h>
#include <linux/gpio/consumer.h>
#include <linux/irq.h>
#include <linux/msi.h>
#include <linux/pci.h>
#include <linux/pci-ecam.h>
#include <linux/reset.h>
#include <linux/pci-epc.h>
#include <linux/pci-epf.h>
#include "../../pci.h"
/* DWC PCIe IP-core versions (native support since v4.70a) */
#define DW_PCIE_VER_365A 0x3336352a
#define DW_PCIE_VER_460A 0x3436302a
#define DW_PCIE_VER_470A 0x3437302a
#define DW_PCIE_VER_480A 0x3438302a
#define DW_PCIE_VER_490A 0x3439302a
#define DW_PCIE_VER_520A 0x3532302a
#define DW_PCIE_VER_540A 0x3534302a
#define __dw_pcie_ver_cmp(_pci, _ver, _op) \
((_pci)->version _op DW_PCIE_VER_ ## _ver)
#define dw_pcie_ver_is(_pci, _ver) __dw_pcie_ver_cmp(_pci, _ver, ==)
#define dw_pcie_ver_is_ge(_pci, _ver) __dw_pcie_ver_cmp(_pci, _ver, >=)
#define dw_pcie_ver_type_is(_pci, _ver, _type) \
(__dw_pcie_ver_cmp(_pci, _ver, ==) && \
__dw_pcie_ver_cmp(_pci, TYPE_ ## _type, ==))
#define dw_pcie_ver_type_is_ge(_pci, _ver, _type) \
(__dw_pcie_ver_cmp(_pci, _ver, ==) && \
__dw_pcie_ver_cmp(_pci, TYPE_ ## _type, >=))
/* DWC PCIe controller capabilities */
#define DW_PCIE_CAP_REQ_RES 0
#define DW_PCIE_CAP_IATU_UNROLL 1
#define DW_PCIE_CAP_CDM_CHECK 2
#define dw_pcie_cap_is(_pci, _cap) \
test_bit(DW_PCIE_CAP_ ## _cap, &(_pci)->caps)
#define dw_pcie_cap_set(_pci, _cap) \
set_bit(DW_PCIE_CAP_ ## _cap, &(_pci)->caps)
/* Parameters for the waiting for iATU enabled routine */
#define LINK_WAIT_MAX_IATU_RETRIES 5
#define LINK_WAIT_IATU 9
/* Synopsys-specific PCIe configuration registers */
#define PCIE_PORT_FORCE 0x708
#define PORT_FORCE_DO_DESKEW_FOR_SRIS BIT(23)
#define PCIE_PORT_AFR 0x70C
#define PORT_AFR_N_FTS_MASK GENMASK(15, 8)
#define PORT_AFR_N_FTS(n) FIELD_PREP(PORT_AFR_N_FTS_MASK, n)
#define PORT_AFR_CC_N_FTS_MASK GENMASK(23, 16)
#define PORT_AFR_CC_N_FTS(n) FIELD_PREP(PORT_AFR_CC_N_FTS_MASK, n)
#define PORT_AFR_ENTER_ASPM BIT(30)
#define PORT_AFR_L0S_ENTRANCE_LAT_SHIFT 24
#define PORT_AFR_L0S_ENTRANCE_LAT_MASK GENMASK(26, 24)
#define PORT_AFR_L1_ENTRANCE_LAT_SHIFT 27
#define PORT_AFR_L1_ENTRANCE_LAT_MASK GENMASK(29, 27)
#define PCIE_PORT_LINK_CONTROL 0x710
#define PORT_LINK_DLL_LINK_EN BIT(5)
#define PORT_LINK_FAST_LINK_MODE BIT(7)
#define PORT_LINK_MODE_MASK GENMASK(21, 16)
#define PORT_LINK_MODE(n) FIELD_PREP(PORT_LINK_MODE_MASK, n)
#define PORT_LINK_MODE_1_LANES PORT_LINK_MODE(0x1)
#define PORT_LINK_MODE_2_LANES PORT_LINK_MODE(0x3)
#define PORT_LINK_MODE_4_LANES PORT_LINK_MODE(0x7)
#define PORT_LINK_MODE_8_LANES PORT_LINK_MODE(0xf)
#define PORT_LINK_MODE_16_LANES PORT_LINK_MODE(0x1f)
#define PCIE_PORT_LANE_SKEW 0x714
#define PORT_LANE_SKEW_INSERT_MASK GENMASK(23, 0)
#define PCIE_PORT_DEBUG0 0x728
#define PORT_LOGIC_LTSSM_STATE_MASK 0x3f
#define PORT_LOGIC_LTSSM_STATE_L0 0x11
#define PCIE_PORT_DEBUG1 0x72C
#define PCIE_PORT_DEBUG1_LINK_UP BIT(4)
#define PCIE_PORT_DEBUG1_LINK_IN_TRAINING BIT(29)
#define PCIE_LINK_WIDTH_SPEED_CONTROL 0x80C
#define PORT_LOGIC_N_FTS_MASK GENMASK(7, 0)
#define PORT_LOGIC_SPEED_CHANGE BIT(17)
#define PORT_LOGIC_LINK_WIDTH_MASK GENMASK(12, 8)
#define PORT_LOGIC_LINK_WIDTH(n) FIELD_PREP(PORT_LOGIC_LINK_WIDTH_MASK, n)
#define PORT_LOGIC_LINK_WIDTH_1_LANES PORT_LOGIC_LINK_WIDTH(0x1)
#define PORT_LOGIC_LINK_WIDTH_2_LANES PORT_LOGIC_LINK_WIDTH(0x2)
#define PORT_LOGIC_LINK_WIDTH_4_LANES PORT_LOGIC_LINK_WIDTH(0x4)
#define PORT_LOGIC_LINK_WIDTH_8_LANES PORT_LOGIC_LINK_WIDTH(0x8)
#define PCIE_MSI_ADDR_LO 0x820
#define PCIE_MSI_ADDR_HI 0x824
#define PCIE_MSI_INTR0_ENABLE 0x828
#define PCIE_MSI_INTR0_MASK 0x82C
#define PCIE_MSI_INTR0_STATUS 0x830
#define GEN3_RELATED_OFF 0x890
#define GEN3_RELATED_OFF_GEN3_ZRXDC_NONCOMPL BIT(0)
#define GEN3_RELATED_OFF_EQ_PHASE_2_3 BIT(9)
#define GEN3_RELATED_OFF_RXEQ_RGRDLESS_RXTS BIT(13)
#define GEN3_RELATED_OFF_GEN3_EQ_DISABLE BIT(16)
#define GEN3_RELATED_OFF_RATE_SHADOW_SEL_SHIFT 24
#define GEN3_RELATED_OFF_RATE_SHADOW_SEL_MASK GENMASK(25, 24)
#define GEN3_EQ_CONTROL_OFF 0x8A8
#define GEN3_EQ_CONTROL_OFF_FB_MODE GENMASK(3, 0)
#define GEN3_EQ_CONTROL_OFF_PHASE23_EXIT_MODE BIT(4)
#define GEN3_EQ_CONTROL_OFF_PSET_REQ_VEC GENMASK(23, 8)
#define GEN3_EQ_CONTROL_OFF_FOM_INC_INITIAL_EVAL BIT(24)
#define GEN3_EQ_FB_MODE_DIR_CHANGE_OFF 0x8AC
#define GEN3_EQ_FMDC_T_MIN_PHASE23 GENMASK(4, 0)
#define GEN3_EQ_FMDC_N_EVALS GENMASK(9, 5)
#define GEN3_EQ_FMDC_MAX_PRE_CURSOR_DELTA GENMASK(13, 10)
#define GEN3_EQ_FMDC_MAX_POST_CURSOR_DELTA GENMASK(17, 14)
#define COHERENCY_CONTROL_1_OFF 0x8E0
#define CFG_MEMTYPE_BOUNDARY_LOW_ADDR_MASK GENMASK(31, 2)
#define CFG_MEMTYPE_VALUE BIT(0)
#define COHERENCY_CONTROL_2_OFF 0x8E4
#define COHERENCY_CONTROL_3_OFF 0x8E8
#define PCIE_PORT_MULTI_LANE_CTRL 0x8C0
#define PORT_MLTI_UPCFG_SUPPORT BIT(7)
#define PCIE_VERSION_NUMBER 0x8F8
#define PCIE_VERSION_TYPE 0x8FC
/*
* iATU inbound and outbound windows CSRs. Before the IP-core v4.80a each
* iATU region CSRs had been indirectly accessible by means of the dedicated
* viewport selector. The iATU/eDMA CSRs space was re-designed in DWC PCIe
* v4.80a in a way so the viewport was unrolled into the directly accessible
* iATU/eDMA CSRs space.
*/
#define PCIE_ATU_VIEWPORT 0x900
#define PCIE_ATU_REGION_DIR_IB BIT(31)
#define PCIE_ATU_REGION_DIR_OB 0
#define PCIE_ATU_VIEWPORT_BASE 0x904
#define PCIE_ATU_UNROLL_BASE(dir, index) \
(((index) << 9) | ((dir == PCIE_ATU_REGION_DIR_IB) ? BIT(8) : 0))
#define PCIE_ATU_VIEWPORT_SIZE 0x2C
#define PCIE_ATU_REGION_CTRL1 0x000
#define PCIE_ATU_INCREASE_REGION_SIZE BIT(13)
#define PCIE_ATU_TYPE_MEM 0x0
#define PCIE_ATU_TYPE_IO 0x2
#define PCIE_ATU_TYPE_CFG0 0x4
#define PCIE_ATU_TYPE_CFG1 0x5
#define PCIE_ATU_TYPE_MSG 0x10
#define PCIE_ATU_TD BIT(8)
#define PCIE_ATU_FUNC_NUM(pf) ((pf) << 20)
#define PCIE_ATU_REGION_CTRL2 0x004
#define PCIE_ATU_ENABLE BIT(31)
#define PCIE_ATU_BAR_MODE_ENABLE BIT(30)
#define PCIE_ATU_CFG_SHIFT_MODE_ENABLE BIT(28)
#define PCIE_ATU_INHIBIT_PAYLOAD BIT(22)
#define PCIE_ATU_FUNC_NUM_MATCH_EN BIT(19)
#define PCIE_ATU_LOWER_BASE 0x008
#define PCIE_ATU_UPPER_BASE 0x00C
#define PCIE_ATU_LIMIT 0x010
#define PCIE_ATU_LOWER_TARGET 0x014
#define PCIE_ATU_BUS(x) FIELD_PREP(GENMASK(31, 24), x)
#define PCIE_ATU_DEV(x) FIELD_PREP(GENMASK(23, 19), x)
#define PCIE_ATU_FUNC(x) FIELD_PREP(GENMASK(18, 16), x)
#define PCIE_ATU_UPPER_TARGET 0x018
#define PCIE_ATU_UPPER_LIMIT 0x020
#define PCIE_MISC_CONTROL_1_OFF 0x8BC
#define PCIE_DBI_RO_WR_EN BIT(0)
#define PCIE_MSIX_DOORBELL 0x948
#define PCIE_MSIX_DOORBELL_PF_SHIFT 24
/*
* eDMA CSRs. DW PCIe IP-core v4.70a and older had the eDMA registers accessible
* over the Port Logic registers space. Afterwards the unrolled mapping was
* introduced so eDMA and iATU could be accessed via a dedicated registers
* space.
*/
#define PCIE_DMA_VIEWPORT_BASE 0x970
#define PCIE_DMA_UNROLL_BASE 0x80000
#define PCIE_DMA_CTRL 0x008
#define PCIE_DMA_NUM_WR_CHAN GENMASK(3, 0)
#define PCIE_DMA_NUM_RD_CHAN GENMASK(19, 16)
#define PCIE_PL_CHK_REG_CONTROL_STATUS 0xB20
#define PCIE_PL_CHK_REG_CHK_REG_START BIT(0)
#define PCIE_PL_CHK_REG_CHK_REG_CONTINUOUS BIT(1)
#define PCIE_PL_CHK_REG_CHK_REG_COMPARISON_ERROR BIT(16)
#define PCIE_PL_CHK_REG_CHK_REG_LOGIC_ERROR BIT(17)
#define PCIE_PL_CHK_REG_CHK_REG_COMPLETE BIT(18)
#define PCIE_PL_CHK_REG_ERR_ADDR 0xB28
/*
* 16.0 GT/s (Gen 4) lane margining register definitions
*/
#define GEN4_LANE_MARGINING_1_OFF 0xB80
#define MARGINING_MAX_VOLTAGE_OFFSET GENMASK(29, 24)
#define MARGINING_NUM_VOLTAGE_STEPS GENMASK(22, 16)
#define MARGINING_MAX_TIMING_OFFSET GENMASK(13, 8)
#define MARGINING_NUM_TIMING_STEPS GENMASK(5, 0)
#define GEN4_LANE_MARGINING_2_OFF 0xB84
#define MARGINING_IND_ERROR_SAMPLER BIT(28)
#define MARGINING_SAMPLE_REPORTING_METHOD BIT(27)
#define MARGINING_IND_LEFT_RIGHT_TIMING BIT(26)
#define MARGINING_IND_UP_DOWN_VOLTAGE BIT(25)
#define MARGINING_VOLTAGE_SUPPORTED BIT(24)
#define MARGINING_MAXLANES GENMASK(20, 16)
#define MARGINING_SAMPLE_RATE_TIMING GENMASK(13, 8)
#define MARGINING_SAMPLE_RATE_VOLTAGE GENMASK(5, 0)
/*
* iATU Unroll-specific register definitions
* From 4.80 core version the address translation will be made by unroll
*/
#define PCIE_ATU_UNR_REGION_CTRL1 0x00
#define PCIE_ATU_UNR_REGION_CTRL2 0x04
#define PCIE_ATU_UNR_LOWER_BASE 0x08
#define PCIE_ATU_UNR_UPPER_BASE 0x0C
#define PCIE_ATU_UNR_LOWER_LIMIT 0x10
#define PCIE_ATU_UNR_LOWER_TARGET 0x14
#define PCIE_ATU_UNR_UPPER_TARGET 0x18
#define PCIE_ATU_UNR_UPPER_LIMIT 0x20
/*
* RAS-DES register definitions
*/
#define PCIE_RAS_DES_EVENT_COUNTER_CONTROL 0x8
#define EVENT_COUNTER_ALL_CLEAR 0x3
#define EVENT_COUNTER_ENABLE_ALL 0x7
#define EVENT_COUNTER_ENABLE_SHIFT 2
#define EVENT_COUNTER_EVENT_SEL_MASK GENMASK(7, 0)
#define EVENT_COUNTER_EVENT_SEL_SHIFT 16
#define EVENT_COUNTER_EVENT_Tx_L0S 0x2
#define EVENT_COUNTER_EVENT_Rx_L0S 0x3
#define EVENT_COUNTER_EVENT_L1 0x5
#define EVENT_COUNTER_EVENT_L1_1 0x7
#define EVENT_COUNTER_EVENT_L1_2 0x8
#define EVENT_COUNTER_GROUP_SEL_SHIFT 24
#define EVENT_COUNTER_GROUP_5 0x5
#define PCIE_RAS_DES_EVENT_COUNTER_DATA 0xc
/* PTM register definitions */
#define PTM_RES_REQ_CTRL 0x8
#define PTM_RES_CCONTEXT_VALID BIT(0)
#define PTM_REQ_AUTO_UPDATE_ENABLED BIT(0)
#define PTM_REQ_START_UPDATE BIT(1)
#define PTM_LOCAL_LSB 0x10
#define PTM_LOCAL_MSB 0x14
#define PTM_T1_T2_LSB 0x18
#define PTM_T1_T2_MSB 0x1c
#define PTM_T3_T4_LSB 0x28
#define PTM_T3_T4_MSB 0x2c
#define PTM_MASTER_LSB 0x38
#define PTM_MASTER_MSB 0x3c
/*
* The default address offset between dbi_base and atu_base. Root controller
* drivers are not required to initialize atu_base if the offset matches this
* default; the driver core automatically derives atu_base from dbi_base using
* this offset, if atu_base not set.
*/
#define DEFAULT_DBI_ATU_OFFSET (0x3 << 20)
#define DEFAULT_DBI_DMA_OFFSET PCIE_DMA_UNROLL_BASE
#define MAX_MSI_IRQS 256
#define MAX_MSI_IRQS_PER_CTRL 32
#define MAX_MSI_CTRLS (MAX_MSI_IRQS / MAX_MSI_IRQS_PER_CTRL)
#define MSI_REG_CTRL_BLOCK_SIZE 12
#define MSI_DEF_NUM_VECTORS 32
/* Maximum number of inbound/outbound iATUs */
#define MAX_IATU_IN 256
#define MAX_IATU_OUT 256
/* Default eDMA LLP memory size */
#define DMA_LLP_MEM_SIZE PAGE_SIZE
/* Common struct pci_epc_feature bits among DWC EP glue drivers */
#define DWC_EPC_COMMON_FEATURES .dynamic_inbound_mapping = true, \
.subrange_mapping = true
struct dw_pcie;
struct dw_pcie_rp;
struct dw_pcie_ep;
enum dw_pcie_device_mode {
DW_PCIE_UNKNOWN_TYPE,
DW_PCIE_EP_TYPE,
DW_PCIE_LEG_EP_TYPE,
DW_PCIE_RC_TYPE,
};
enum dw_pcie_app_clk {
DW_PCIE_DBI_CLK,
DW_PCIE_MSTR_CLK,
DW_PCIE_SLV_CLK,
DW_PCIE_NUM_APP_CLKS
};
enum dw_pcie_core_clk {
DW_PCIE_PIPE_CLK,
DW_PCIE_CORE_CLK,
DW_PCIE_AUX_CLK,
DW_PCIE_REF_CLK,
DW_PCIE_NUM_CORE_CLKS
};
enum dw_pcie_app_rst {
DW_PCIE_DBI_RST,
DW_PCIE_MSTR_RST,
DW_PCIE_SLV_RST,
DW_PCIE_NUM_APP_RSTS
};
enum dw_pcie_core_rst {
DW_PCIE_NON_STICKY_RST,
DW_PCIE_STICKY_RST,
DW_PCIE_CORE_RST,
DW_PCIE_PIPE_RST,
DW_PCIE_PHY_RST,
DW_PCIE_HOT_RST,
DW_PCIE_PWR_RST,
DW_PCIE_NUM_CORE_RSTS
};
enum dw_pcie_ltssm {
/* Need to align with PCIE_PORT_DEBUG0 bits 0:5 */
DW_PCIE_LTSSM_DETECT_QUIET = 0x0,
DW_PCIE_LTSSM_DETECT_ACT = 0x1,
DW_PCIE_LTSSM_POLL_ACTIVE = 0x2,
DW_PCIE_LTSSM_POLL_COMPLIANCE = 0x3,
DW_PCIE_LTSSM_POLL_CONFIG = 0x4,
DW_PCIE_LTSSM_PRE_DETECT_QUIET = 0x5,
DW_PCIE_LTSSM_DETECT_WAIT = 0x6,
DW_PCIE_LTSSM_CFG_LINKWD_START = 0x7,
DW_PCIE_LTSSM_CFG_LINKWD_ACEPT = 0x8,
DW_PCIE_LTSSM_CFG_LANENUM_WAI = 0x9,
DW_PCIE_LTSSM_CFG_LANENUM_ACEPT = 0xa,
DW_PCIE_LTSSM_CFG_COMPLETE = 0xb,
DW_PCIE_LTSSM_CFG_IDLE = 0xc,
DW_PCIE_LTSSM_RCVRY_LOCK = 0xd,
DW_PCIE_LTSSM_RCVRY_SPEED = 0xe,
DW_PCIE_LTSSM_RCVRY_RCVRCFG = 0xf,
DW_PCIE_LTSSM_RCVRY_IDLE = 0x10,
DW_PCIE_LTSSM_L0 = 0x11,
DW_PCIE_LTSSM_L0S = 0x12,
DW_PCIE_LTSSM_L123_SEND_EIDLE = 0x13,
DW_PCIE_LTSSM_L1_IDLE = 0x14,
DW_PCIE_LTSSM_L2_IDLE = 0x15,
DW_PCIE_LTSSM_L2_WAKE = 0x16,
DW_PCIE_LTSSM_DISABLED_ENTRY = 0x17,
DW_PCIE_LTSSM_DISABLED_IDLE = 0x18,
DW_PCIE_LTSSM_DISABLED = 0x19,
DW_PCIE_LTSSM_LPBK_ENTRY = 0x1a,
DW_PCIE_LTSSM_LPBK_ACTIVE = 0x1b,
DW_PCIE_LTSSM_LPBK_EXIT = 0x1c,
DW_PCIE_LTSSM_LPBK_EXIT_TIMEOUT = 0x1d,
DW_PCIE_LTSSM_HOT_RESET_ENTRY = 0x1e,
DW_PCIE_LTSSM_HOT_RESET = 0x1f,
DW_PCIE_LTSSM_RCVRY_EQ0 = 0x20,
DW_PCIE_LTSSM_RCVRY_EQ1 = 0x21,
DW_PCIE_LTSSM_RCVRY_EQ2 = 0x22,
DW_PCIE_LTSSM_RCVRY_EQ3 = 0x23,
/* Vendor glue drivers provide pseudo L1 substates from get_ltssm() */
DW_PCIE_LTSSM_L1_1 = 0x141,
DW_PCIE_LTSSM_L1_2 = 0x142,
DW_PCIE_LTSSM_UNKNOWN = 0xFFFFFFFF,
};
struct dw_pcie_ob_atu_cfg {
int index;
int type;
u8 func_no;
u8 code;
u8 routing;
u32 ctrl2;
u64 parent_bus_addr;
u64 pci_addr;
u64 size;
};
struct dw_pcie_host_ops {
int (*init)(struct dw_pcie_rp *pp);
void (*deinit)(struct dw_pcie_rp *pp);
void (*post_init)(struct dw_pcie_rp *pp);
int (*msi_init)(struct dw_pcie_rp *pp);
void (*pme_turn_off)(struct dw_pcie_rp *pp);
};
struct dw_pcie_rp {
bool use_imsi_rx:1;
bool cfg0_io_shared:1;
u64 cfg0_base;
void __iomem *va_cfg0_base;
u32 cfg0_size;
resource_size_t io_base;
phys_addr_t io_bus_addr;
u32 io_size;
int irq;
const struct dw_pcie_host_ops *ops;
int msi_irq[MAX_MSI_CTRLS];
struct irq_domain *irq_domain;
dma_addr_t msi_data;
struct irq_chip *msi_irq_chip;
u32 num_vectors;
u32 irq_mask[MAX_MSI_CTRLS];
struct pci_host_bridge *bridge;
raw_spinlock_t lock;
DECLARE_BITMAP(msi_irq_in_use, MAX_MSI_IRQS);
bool use_atu_msg;
int msg_atu_index;
struct resource *msg_res;
struct pci_eq_presets presets;
struct pci_config_window *cfg;
bool ecam_enabled;
bool native_ecam;
bool skip_l23_ready;
};
struct dw_pcie_ep_ops {
void (*pre_init)(struct dw_pcie_ep *ep);
void (*init)(struct dw_pcie_ep *ep);
int (*raise_irq)(struct dw_pcie_ep *ep, u8 func_no,
unsigned int type, u16 interrupt_num);
const struct pci_epc_features* (*get_features)(struct dw_pcie_ep *ep);
/*
* Provide a method to implement the different func config space
* access for different platform, if different func have different
* offset, return the offset of func. if use write a register way
* return a 0, and implement code in callback function of platform
* driver.
*/
unsigned int (*get_dbi_offset)(struct dw_pcie_ep *ep, u8 func_no);
unsigned int (*get_dbi2_offset)(struct dw_pcie_ep *ep, u8 func_no);
};
struct dw_pcie_ep_func {
struct list_head list;
u8 func_no;
u8 msi_cap; /* MSI capability offset */
u8 msix_cap; /* MSI-X capability offset */
u8 bar_to_atu[PCI_STD_NUM_BARS];
struct pci_epf_bar *epf_bar[PCI_STD_NUM_BARS];
/* Only for Address Match Mode inbound iATU */
u32 *ib_atu_indexes[PCI_STD_NUM_BARS];
unsigned int num_ib_atu_indexes[PCI_STD_NUM_BARS];
};
struct dw_pcie_ep {
struct pci_epc *epc;
struct list_head func_list;
const struct dw_pcie_ep_ops *ops;
phys_addr_t phys_base;
size_t addr_size;
size_t page_size;
phys_addr_t *outbound_addr;
unsigned long *ib_window_map;
unsigned long *ob_window_map;
void __iomem *msi_mem;
phys_addr_t msi_mem_phys;
/* MSI outbound iATU state */
bool msi_iatu_mapped;
u64 msi_msg_addr;
size_t msi_map_size;
};
struct dw_pcie_ops {
u64 (*cpu_addr_fixup)(struct dw_pcie *pcie, u64 cpu_addr);
u32 (*read_dbi)(struct dw_pcie *pcie, void __iomem *base, u32 reg,
size_t size);
void (*write_dbi)(struct dw_pcie *pcie, void __iomem *base, u32 reg,
size_t size, u32 val);
void (*write_dbi2)(struct dw_pcie *pcie, void __iomem *base, u32 reg,
size_t size, u32 val);
bool (*link_up)(struct dw_pcie *pcie);
enum dw_pcie_ltssm (*get_ltssm)(struct dw_pcie *pcie);
int (*start_link)(struct dw_pcie *pcie);
void (*stop_link)(struct dw_pcie *pcie);
};
struct debugfs_info {
struct dentry *debug_dir;
void *rasdes_info;
};
struct dw_pcie {
struct device *dev;
void __iomem *dbi_base;
resource_size_t dbi_phys_addr;
void __iomem *dbi_base2;
void __iomem *atu_base;
void __iomem *elbi_base;
resource_size_t atu_phys_addr;
size_t atu_size;
resource_size_t parent_bus_offset;
u32 num_ib_windows;
u32 num_ob_windows;
u32 region_align;
u64 region_limit;
struct dw_pcie_rp pp;
struct dw_pcie_ep ep;
const struct dw_pcie_ops *ops;
u32 version;
u32 type;
unsigned long caps;
int num_lanes;
int max_link_speed;
u8 n_fts[2];
struct dw_edma_chip edma;
bool l1ss_support; /* L1 PM Substates support */
struct clk_bulk_data app_clks[DW_PCIE_NUM_APP_CLKS];
struct clk_bulk_data core_clks[DW_PCIE_NUM_CORE_CLKS];
struct reset_control_bulk_data app_rsts[DW_PCIE_NUM_APP_RSTS];
struct reset_control_bulk_data core_rsts[DW_PCIE_NUM_CORE_RSTS];
struct gpio_desc *pe_rst;
bool suspended;
struct debugfs_info *debugfs;
enum dw_pcie_device_mode mode;
u16 ptm_vsec_offset;
struct pci_ptm_debugfs *ptm_debugfs;
/*
* If iATU input addresses are offset from CPU physical addresses,
* we previously required .cpu_addr_fixup() to convert them. We
* now rely on the devicetree instead. If .cpu_addr_fixup()
* exists, we compare its results with devicetree.
*
* If .cpu_addr_fixup() does not exist, we assume the offset is
* zero and warn if devicetree claims otherwise. If we know all
* devicetrees correctly describe the offset, set
* use_parent_dt_ranges to true to avoid this warning.
*/
bool use_parent_dt_ranges;
};
#define to_dw_pcie_from_pp(port) container_of((port), struct dw_pcie, pp)
#define to_dw_pcie_from_ep(endpoint) \
container_of((endpoint), struct dw_pcie, ep)
int dw_pcie_get_resources(struct dw_pcie *pci);
void dw_pcie_version_detect(struct dw_pcie *pci);
u8 dw_pcie_find_capability(struct dw_pcie *pci, u8 cap);
u16 dw_pcie_find_ext_capability(struct dw_pcie *pci, u8 cap);
void dw_pcie_remove_capability(struct dw_pcie *pci, u8 cap);
void dw_pcie_remove_ext_capability(struct dw_pcie *pci, u8 cap);
u16 dw_pcie_find_rasdes_capability(struct dw_pcie *pci);
u16 dw_pcie_find_ptm_capability(struct dw_pcie *pci);
int dw_pcie_read(void __iomem *addr, int size, u32 *val);
int dw_pcie_write(void __iomem *addr, int size, u32 val);
u32 dw_pcie_read_dbi(struct dw_pcie *pci, u32 reg, size_t size);
void dw_pcie_write_dbi(struct dw_pcie *pci, u32 reg, size_t size, u32 val);
void dw_pcie_write_dbi2(struct dw_pcie *pci, u32 reg, size_t size, u32 val);
bool dw_pcie_link_up(struct dw_pcie *pci);
void dw_pcie_upconfig_setup(struct dw_pcie *pci);
int dw_pcie_wait_for_link(struct dw_pcie *pci);
int dw_pcie_link_get_max_link_width(struct dw_pcie *pci);
int dw_pcie_prog_outbound_atu(struct dw_pcie *pci,
const struct dw_pcie_ob_atu_cfg *atu);
int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, int index, int type,
u64 parent_bus_addr, u64 pci_addr, u64 size);
int dw_pcie_prog_ep_inbound_atu(struct dw_pcie *pci, u8 func_no, int index,
int type, u64 parent_bus_addr,
u8 bar, size_t size);
void dw_pcie_disable_atu(struct dw_pcie *pci, u32 dir, int index);
void dw_pcie_hide_unsupported_l1ss(struct dw_pcie *pci);
void dw_pcie_setup(struct dw_pcie *pci);
void dw_pcie_iatu_detect(struct dw_pcie *pci);
int dw_pcie_edma_detect(struct dw_pcie *pci);
void dw_pcie_edma_remove(struct dw_pcie *pci);
resource_size_t dw_pcie_parent_bus_offset(struct dw_pcie *pci,
const char *reg_name,
resource_size_t cpu_phy_addr);
static inline void dw_pcie_writel_dbi(struct dw_pcie *pci, u32 reg, u32 val)
{
dw_pcie_write_dbi(pci, reg, 0x4, val);
}
static inline u32 dw_pcie_readl_dbi(struct dw_pcie *pci, u32 reg)
{
return dw_pcie_read_dbi(pci, reg, 0x4);
}
static inline void dw_pcie_writew_dbi(struct dw_pcie *pci, u32 reg, u16 val)
{
dw_pcie_write_dbi(pci, reg, 0x2, val);
}
static inline u16 dw_pcie_readw_dbi(struct dw_pcie *pci, u32 reg)
{
return dw_pcie_read_dbi(pci, reg, 0x2);
}
static inline void dw_pcie_writeb_dbi(struct dw_pcie *pci, u32 reg, u8 val)
{
dw_pcie_write_dbi(pci, reg, 0x1, val);
}
static inline u8 dw_pcie_readb_dbi(struct dw_pcie *pci, u32 reg)
{
return dw_pcie_read_dbi(pci, reg, 0x1);
}
static inline void dw_pcie_writel_dbi2(struct dw_pcie *pci, u32 reg, u32 val)
{
dw_pcie_write_dbi2(pci, reg, 0x4, val);
}
static inline int dw_pcie_read_cfg_byte(struct dw_pcie *pci, int where,
u8 *val)
{
*val = dw_pcie_readb_dbi(pci, where);
return PCIBIOS_SUCCESSFUL;
}
static inline int dw_pcie_read_cfg_word(struct dw_pcie *pci, int where,
u16 *val)
{
*val = dw_pcie_readw_dbi(pci, where);
return PCIBIOS_SUCCESSFUL;
}
static inline int dw_pcie_read_cfg_dword(struct dw_pcie *pci, int where,
u32 *val)
{
*val = dw_pcie_readl_dbi(pci, where);
return PCIBIOS_SUCCESSFUL;
}
static inline unsigned int dw_pcie_ep_get_dbi_offset(struct dw_pcie_ep *ep,
u8 func_no)
{
unsigned int dbi_offset = 0;
if (ep->ops->get_dbi_offset)
dbi_offset = ep->ops->get_dbi_offset(ep, func_no);
return dbi_offset;
}
static inline u32 dw_pcie_ep_read_dbi(struct dw_pcie_ep *ep, u8 func_no,
u32 reg, size_t size)
{
unsigned int offset = dw_pcie_ep_get_dbi_offset(ep, func_no);
struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
return dw_pcie_read_dbi(pci, offset + reg, size);
}
static inline void dw_pcie_ep_write_dbi(struct dw_pcie_ep *ep, u8 func_no,
u32 reg, size_t size, u32 val)
{
unsigned int offset = dw_pcie_ep_get_dbi_offset(ep, func_no);
struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
dw_pcie_write_dbi(pci, offset + reg, size, val);
}
static inline void dw_pcie_ep_writel_dbi(struct dw_pcie_ep *ep, u8 func_no,
u32 reg, u32 val)
{
dw_pcie_ep_write_dbi(ep, func_no, reg, 0x4, val);
}
static inline u32 dw_pcie_ep_readl_dbi(struct dw_pcie_ep *ep, u8 func_no,
u32 reg)
{
return dw_pcie_ep_read_dbi(ep, func_no, reg, 0x4);
}
static inline void dw_pcie_ep_writew_dbi(struct dw_pcie_ep *ep, u8 func_no,
u32 reg, u16 val)
{
dw_pcie_ep_write_dbi(ep, func_no, reg, 0x2, val);
}
static inline u16 dw_pcie_ep_readw_dbi(struct dw_pcie_ep *ep, u8 func_no,
u32 reg)
{
return dw_pcie_ep_read_dbi(ep, func_no, reg, 0x2);
}
static inline void dw_pcie_ep_writeb_dbi(struct dw_pcie_ep *ep, u8 func_no,
u32 reg, u8 val)
{
dw_pcie_ep_write_dbi(ep, func_no, reg, 0x1, val);
}
static inline u8 dw_pcie_ep_readb_dbi(struct dw_pcie_ep *ep, u8 func_no,
u32 reg)
{
return dw_pcie_ep_read_dbi(ep, func_no, reg, 0x1);
}
static inline int dw_pcie_ep_read_cfg_byte(struct dw_pcie_ep *ep, u8 func_no,
int where, u8 *val)
{
*val = dw_pcie_ep_readb_dbi(ep, func_no, where);
return PCIBIOS_SUCCESSFUL;
}
static inline int dw_pcie_ep_read_cfg_word(struct dw_pcie_ep *ep, u8 func_no,
int where, u16 *val)
{
*val = dw_pcie_ep_readw_dbi(ep, func_no, where);
return PCIBIOS_SUCCESSFUL;
}
static inline int dw_pcie_ep_read_cfg_dword(struct dw_pcie_ep *ep, u8 func_no,
int where, u32 *val)
{
*val = dw_pcie_ep_readl_dbi(ep, func_no, where);
return PCIBIOS_SUCCESSFUL;
}
static inline unsigned int dw_pcie_ep_get_dbi2_offset(struct dw_pcie_ep *ep,
u8 func_no)
{
unsigned int dbi2_offset = 0;
if (ep->ops->get_dbi2_offset)
dbi2_offset = ep->ops->get_dbi2_offset(ep, func_no);
else if (ep->ops->get_dbi_offset) /* for backward compatibility */
dbi2_offset = ep->ops->get_dbi_offset(ep, func_no);
return dbi2_offset;
}
static inline void dw_pcie_ep_write_dbi2(struct dw_pcie_ep *ep, u8 func_no,
u32 reg, size_t size, u32 val)
{
unsigned int offset = dw_pcie_ep_get_dbi2_offset(ep, func_no);
struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
dw_pcie_write_dbi2(pci, offset + reg, size, val);
}
static inline void dw_pcie_ep_writel_dbi2(struct dw_pcie_ep *ep, u8 func_no,
u32 reg, u32 val)
{
dw_pcie_ep_write_dbi2(ep, func_no, reg, 0x4, val);
}
static inline void dw_pcie_dbi_ro_wr_en(struct dw_pcie *pci)
{
u32 reg;
u32 val;
reg = PCIE_MISC_CONTROL_1_OFF;
val = dw_pcie_readl_dbi(pci, reg);
val |= PCIE_DBI_RO_WR_EN;
dw_pcie_writel_dbi(pci, reg, val);
}
static inline void dw_pcie_dbi_ro_wr_dis(struct dw_pcie *pci)
{
u32 reg;
u32 val;
reg = PCIE_MISC_CONTROL_1_OFF;
val = dw_pcie_readl_dbi(pci, reg);
val &= ~PCIE_DBI_RO_WR_EN;
dw_pcie_writel_dbi(pci, reg, val);
}
static inline int dw_pcie_start_link(struct dw_pcie *pci)
{
if (pci->ops && pci->ops->start_link)
return pci->ops->start_link(pci);
return 0;
}
static inline void dw_pcie_stop_link(struct dw_pcie *pci)
{
if (pci->ops && pci->ops->stop_link)
pci->ops->stop_link(pci);
}
static inline enum dw_pcie_ltssm dw_pcie_get_ltssm(struct dw_pcie *pci)
{
u32 val;
if (pci->ops && pci->ops->get_ltssm)
return pci->ops->get_ltssm(pci);
val = dw_pcie_readl_dbi(pci, PCIE_PORT_DEBUG0);
return (enum dw_pcie_ltssm)FIELD_GET(PORT_LOGIC_LTSSM_STATE_MASK, val);
}
const char *dw_pcie_ltssm_status_string(enum dw_pcie_ltssm ltssm);
#ifdef CONFIG_PCIE_DW_HOST
int dw_pcie_suspend_noirq(struct dw_pcie *pci);
int dw_pcie_resume_noirq(struct dw_pcie *pci);
void dw_handle_msi_irq(struct dw_pcie_rp *pp);
void dw_pcie_msi_init(struct dw_pcie_rp *pp);
int dw_pcie_msi_host_init(struct dw_pcie_rp *pp);
void dw_pcie_free_msi(struct dw_pcie_rp *pp);
int dw_pcie_setup_rc(struct dw_pcie_rp *pp);
int dw_pcie_host_init(struct dw_pcie_rp *pp);
void dw_pcie_host_deinit(struct dw_pcie_rp *pp);
int dw_pcie_allocate_domains(struct dw_pcie_rp *pp);
void __iomem *dw_pcie_own_conf_map_bus(struct pci_bus *bus, unsigned int devfn,
int where);
#else
static inline int dw_pcie_suspend_noirq(struct dw_pcie *pci)
{
return 0;
}
static inline int dw_pcie_resume_noirq(struct dw_pcie *pci)
{
return 0;
}
static inline void dw_handle_msi_irq(struct dw_pcie_rp *pp) { }
static inline void dw_pcie_msi_init(struct dw_pcie_rp *pp)
{ }
static inline int dw_pcie_msi_host_init(struct dw_pcie_rp *pp)
{
return -ENODEV;
}
static inline void dw_pcie_free_msi(struct dw_pcie_rp *pp)
{ }
static inline int dw_pcie_setup_rc(struct dw_pcie_rp *pp)
{
return 0;
}
static inline int dw_pcie_host_init(struct dw_pcie_rp *pp)
{
return 0;
}
static inline void dw_pcie_host_deinit(struct dw_pcie_rp *pp)
{
}
static inline int dw_pcie_allocate_domains(struct dw_pcie_rp *pp)
{
return 0;
}
static inline void __iomem *dw_pcie_own_conf_map_bus(struct pci_bus *bus,
unsigned int devfn,
int where)
{
return NULL;
}
#endif
#ifdef CONFIG_PCIE_DW_EP
void dw_pcie_ep_linkup(struct dw_pcie_ep *ep);
void dw_pcie_ep_linkdown(struct dw_pcie_ep *ep);
int dw_pcie_ep_init(struct dw_pcie_ep *ep);
int dw_pcie_ep_init_registers(struct dw_pcie_ep *ep);
void dw_pcie_ep_deinit(struct dw_pcie_ep *ep);
void dw_pcie_ep_cleanup(struct dw_pcie_ep *ep);
int dw_pcie_ep_raise_intx_irq(struct dw_pcie_ep *ep, u8 func_no);
int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no,
u8 interrupt_num);
int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no,
u16 interrupt_num);
int dw_pcie_ep_raise_msix_irq_doorbell(struct dw_pcie_ep *ep, u8 func_no,
u16 interrupt_num);
void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar);
struct dw_pcie_ep_func *
dw_pcie_ep_get_func_from_ep(struct dw_pcie_ep *ep, u8 func_no);
#else
static inline void dw_pcie_ep_linkup(struct dw_pcie_ep *ep)
{
}
static inline void dw_pcie_ep_linkdown(struct dw_pcie_ep *ep)
{
}
static inline int dw_pcie_ep_init(struct dw_pcie_ep *ep)
{
return 0;
}
static inline int dw_pcie_ep_init_registers(struct dw_pcie_ep *ep)
{
return 0;
}
static inline void dw_pcie_ep_deinit(struct dw_pcie_ep *ep)
{
}
static inline void dw_pcie_ep_cleanup(struct dw_pcie_ep *ep)
{
}
static inline int dw_pcie_ep_raise_intx_irq(struct dw_pcie_ep *ep, u8 func_no)
{
return 0;
}
static inline int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no,
u8 interrupt_num)
{
return 0;
}
static inline int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no,
u16 interrupt_num)
{
return 0;
}
static inline int dw_pcie_ep_raise_msix_irq_doorbell(struct dw_pcie_ep *ep,
u8 func_no,
u16 interrupt_num)
{
return 0;
}
static inline void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar)
{
}
static inline struct dw_pcie_ep_func *
dw_pcie_ep_get_func_from_ep(struct dw_pcie_ep *ep, u8 func_no)
{
return NULL;
}
#endif
#ifdef CONFIG_PCIE_DW_DEBUGFS
void dwc_pcie_debugfs_init(struct dw_pcie *pci, enum dw_pcie_device_mode mode);
void dwc_pcie_debugfs_deinit(struct dw_pcie *pci);
#else
static inline void dwc_pcie_debugfs_init(struct dw_pcie *pci,
enum dw_pcie_device_mode mode)
{
}
static inline void dwc_pcie_debugfs_deinit(struct dw_pcie *pci)
{
}
#endif
#endif /* _PCIE_DESIGNWARE_H */
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