|  | /* 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/reset.h> | 
|  |  | 
|  | #include <linux/pci-epc.h> | 
|  | #include <linux/pci-epf.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 link up routine */ | 
|  | #define LINK_WAIT_MAX_RETRIES		10 | 
|  | #define LINK_WAIT_SLEEP_MS		90 | 
|  |  | 
|  | /* 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 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	0x1f | 
|  | #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_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_RELATED_OFF_RATE_SHADOW_SEL_16_0GT	0x1 | 
|  |  | 
|  | #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_CUSROR_DELTA	GENMASK(13, 10) | 
|  | #define GEN3_EQ_FMDC_MAX_POST_CUSROR_DELTA	GENMASK(17, 14) | 
|  |  | 
|  | #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_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 | 
|  |  | 
|  | /* | 
|  | * 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 | 
|  |  | 
|  | 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_L0 = 0x11, | 
|  | DW_PCIE_LTSSM_L2_IDLE = 0x15, | 
|  |  | 
|  | DW_PCIE_LTSSM_UNKNOWN = 0xFFFFFFFF, | 
|  | }; | 
|  |  | 
|  | struct dw_pcie_ob_atu_cfg { | 
|  | int index; | 
|  | int type; | 
|  | u8 func_no; | 
|  | u8 code; | 
|  | u8 routing; | 
|  | u64 cpu_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			has_msi_ctrl: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; | 
|  | struct irq_domain	*msi_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 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 */ | 
|  | }; | 
|  |  | 
|  | 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; | 
|  | u8			bar_to_atu[PCI_STD_NUM_BARS]; | 
|  | 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; | 
|  | struct pci_epf_bar	*epf_bar[PCI_STD_NUM_BARS]; | 
|  | }; | 
|  |  | 
|  | 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); | 
|  | int	(*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 dw_pcie { | 
|  | struct device		*dev; | 
|  | void __iomem		*dbi_base; | 
|  | resource_size_t		dbi_phys_addr; | 
|  | void __iomem		*dbi_base2; | 
|  | void __iomem		*atu_base; | 
|  | resource_size_t		atu_phys_addr; | 
|  | size_t			atu_size; | 
|  | 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; | 
|  | 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; | 
|  | }; | 
|  |  | 
|  | #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); | 
|  |  | 
|  | 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); | 
|  | int 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_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 cpu_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 cpu_addr, u8 bar); | 
|  | void dw_pcie_disable_atu(struct dw_pcie *pci, u32 dir, int index); | 
|  | 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); | 
|  |  | 
|  | int dw_pcie_suspend_noirq(struct dw_pcie *pci); | 
|  | int dw_pcie_resume_noirq(struct dw_pcie *pci); | 
|  |  | 
|  | 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 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 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); | 
|  | } | 
|  |  | 
|  | #ifdef CONFIG_PCIE_DW_HOST | 
|  | irqreturn_t dw_handle_msi_irq(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 irqreturn_t dw_handle_msi_irq(struct dw_pcie_rp *pp) | 
|  | { | 
|  | return IRQ_NONE; | 
|  | } | 
|  |  | 
|  | 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 | 
|  | #endif /* _PCIE_DESIGNWARE_H */ |