| /* 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 */ |