Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* |
| 3 | * Synopsys DesignWare PCIe host controller driver |
| 4 | * |
| 5 | * Copyright (C) 2013 Samsung Electronics Co., Ltd. |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 6 | * https://www.samsung.com |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 7 | * |
| 8 | * Author: Jingoo Han <jg1.han@samsung.com> |
| 9 | */ |
| 10 | |
| 11 | #ifndef _PCIE_DESIGNWARE_H |
| 12 | #define _PCIE_DESIGNWARE_H |
| 13 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 14 | #include <linux/bitfield.h> |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 15 | #include <linux/dma-mapping.h> |
| 16 | #include <linux/irq.h> |
| 17 | #include <linux/msi.h> |
| 18 | #include <linux/pci.h> |
| 19 | |
| 20 | #include <linux/pci-epc.h> |
| 21 | #include <linux/pci-epf.h> |
| 22 | |
| 23 | /* Parameters for the waiting for link up routine */ |
| 24 | #define LINK_WAIT_MAX_RETRIES 10 |
| 25 | #define LINK_WAIT_USLEEP_MIN 90000 |
| 26 | #define LINK_WAIT_USLEEP_MAX 100000 |
| 27 | |
| 28 | /* Parameters for the waiting for iATU enabled routine */ |
| 29 | #define LINK_WAIT_MAX_IATU_RETRIES 5 |
| 30 | #define LINK_WAIT_IATU 9 |
| 31 | |
| 32 | /* Synopsys-specific PCIe configuration registers */ |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 33 | #define PCIE_PORT_AFR 0x70C |
| 34 | #define PORT_AFR_N_FTS_MASK GENMASK(15, 8) |
| 35 | #define PORT_AFR_N_FTS(n) FIELD_PREP(PORT_AFR_N_FTS_MASK, n) |
| 36 | #define PORT_AFR_CC_N_FTS_MASK GENMASK(23, 16) |
| 37 | #define PORT_AFR_CC_N_FTS(n) FIELD_PREP(PORT_AFR_CC_N_FTS_MASK, n) |
| 38 | #define PORT_AFR_ENTER_ASPM BIT(30) |
| 39 | #define PORT_AFR_L0S_ENTRANCE_LAT_SHIFT 24 |
| 40 | #define PORT_AFR_L0S_ENTRANCE_LAT_MASK GENMASK(26, 24) |
| 41 | #define PORT_AFR_L1_ENTRANCE_LAT_SHIFT 27 |
| 42 | #define PORT_AFR_L1_ENTRANCE_LAT_MASK GENMASK(29, 27) |
| 43 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 44 | #define PCIE_PORT_LINK_CONTROL 0x710 |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 45 | #define PORT_LINK_DLL_LINK_EN BIT(5) |
| 46 | #define PORT_LINK_FAST_LINK_MODE BIT(7) |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 47 | #define PORT_LINK_MODE_MASK GENMASK(21, 16) |
| 48 | #define PORT_LINK_MODE(n) FIELD_PREP(PORT_LINK_MODE_MASK, n) |
| 49 | #define PORT_LINK_MODE_1_LANES PORT_LINK_MODE(0x1) |
| 50 | #define PORT_LINK_MODE_2_LANES PORT_LINK_MODE(0x3) |
| 51 | #define PORT_LINK_MODE_4_LANES PORT_LINK_MODE(0x7) |
| 52 | #define PORT_LINK_MODE_8_LANES PORT_LINK_MODE(0xf) |
| 53 | |
| 54 | #define PCIE_PORT_DEBUG0 0x728 |
| 55 | #define PORT_LOGIC_LTSSM_STATE_MASK 0x1f |
| 56 | #define PORT_LOGIC_LTSSM_STATE_L0 0x11 |
| 57 | #define PCIE_PORT_DEBUG1 0x72C |
| 58 | #define PCIE_PORT_DEBUG1_LINK_UP BIT(4) |
| 59 | #define PCIE_PORT_DEBUG1_LINK_IN_TRAINING BIT(29) |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 60 | |
| 61 | #define PCIE_LINK_WIDTH_SPEED_CONTROL 0x80C |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 62 | #define PORT_LOGIC_N_FTS_MASK GENMASK(7, 0) |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 63 | #define PORT_LOGIC_SPEED_CHANGE BIT(17) |
| 64 | #define PORT_LOGIC_LINK_WIDTH_MASK GENMASK(12, 8) |
| 65 | #define PORT_LOGIC_LINK_WIDTH(n) FIELD_PREP(PORT_LOGIC_LINK_WIDTH_MASK, n) |
| 66 | #define PORT_LOGIC_LINK_WIDTH_1_LANES PORT_LOGIC_LINK_WIDTH(0x1) |
| 67 | #define PORT_LOGIC_LINK_WIDTH_2_LANES PORT_LOGIC_LINK_WIDTH(0x2) |
| 68 | #define PORT_LOGIC_LINK_WIDTH_4_LANES PORT_LOGIC_LINK_WIDTH(0x4) |
| 69 | #define PORT_LOGIC_LINK_WIDTH_8_LANES PORT_LOGIC_LINK_WIDTH(0x8) |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 70 | |
| 71 | #define PCIE_MSI_ADDR_LO 0x820 |
| 72 | #define PCIE_MSI_ADDR_HI 0x824 |
| 73 | #define PCIE_MSI_INTR0_ENABLE 0x828 |
| 74 | #define PCIE_MSI_INTR0_MASK 0x82C |
| 75 | #define PCIE_MSI_INTR0_STATUS 0x830 |
| 76 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 77 | #define PCIE_PORT_MULTI_LANE_CTRL 0x8C0 |
| 78 | #define PORT_MLTI_UPCFG_SUPPORT BIT(7) |
| 79 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 80 | #define PCIE_ATU_VIEWPORT 0x900 |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 81 | #define PCIE_ATU_REGION_INBOUND BIT(31) |
| 82 | #define PCIE_ATU_REGION_OUTBOUND 0 |
| 83 | #define PCIE_ATU_REGION_INDEX2 0x2 |
| 84 | #define PCIE_ATU_REGION_INDEX1 0x1 |
| 85 | #define PCIE_ATU_REGION_INDEX0 0x0 |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 86 | #define PCIE_ATU_CR1 0x904 |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 87 | #define PCIE_ATU_TYPE_MEM 0x0 |
| 88 | #define PCIE_ATU_TYPE_IO 0x2 |
| 89 | #define PCIE_ATU_TYPE_CFG0 0x4 |
| 90 | #define PCIE_ATU_TYPE_CFG1 0x5 |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 91 | #define PCIE_ATU_FUNC_NUM(pf) ((pf) << 20) |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 92 | #define PCIE_ATU_CR2 0x908 |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 93 | #define PCIE_ATU_ENABLE BIT(31) |
| 94 | #define PCIE_ATU_BAR_MODE_ENABLE BIT(30) |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 95 | #define PCIE_ATU_FUNC_NUM_MATCH_EN BIT(19) |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 96 | #define PCIE_ATU_LOWER_BASE 0x90C |
| 97 | #define PCIE_ATU_UPPER_BASE 0x910 |
| 98 | #define PCIE_ATU_LIMIT 0x914 |
| 99 | #define PCIE_ATU_LOWER_TARGET 0x918 |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 100 | #define PCIE_ATU_BUS(x) FIELD_PREP(GENMASK(31, 24), x) |
| 101 | #define PCIE_ATU_DEV(x) FIELD_PREP(GENMASK(23, 19), x) |
| 102 | #define PCIE_ATU_FUNC(x) FIELD_PREP(GENMASK(18, 16), x) |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 103 | #define PCIE_ATU_UPPER_TARGET 0x91C |
| 104 | |
| 105 | #define PCIE_MISC_CONTROL_1_OFF 0x8BC |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 106 | #define PCIE_DBI_RO_WR_EN BIT(0) |
| 107 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 108 | #define PCIE_MSIX_DOORBELL 0x948 |
| 109 | #define PCIE_MSIX_DOORBELL_PF_SHIFT 24 |
| 110 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 111 | #define PCIE_PL_CHK_REG_CONTROL_STATUS 0xB20 |
| 112 | #define PCIE_PL_CHK_REG_CHK_REG_START BIT(0) |
| 113 | #define PCIE_PL_CHK_REG_CHK_REG_CONTINUOUS BIT(1) |
| 114 | #define PCIE_PL_CHK_REG_CHK_REG_COMPARISON_ERROR BIT(16) |
| 115 | #define PCIE_PL_CHK_REG_CHK_REG_LOGIC_ERROR BIT(17) |
| 116 | #define PCIE_PL_CHK_REG_CHK_REG_COMPLETE BIT(18) |
| 117 | |
| 118 | #define PCIE_PL_CHK_REG_ERR_ADDR 0xB28 |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 119 | |
| 120 | /* |
| 121 | * iATU Unroll-specific register definitions |
| 122 | * From 4.80 core version the address translation will be made by unroll |
| 123 | */ |
| 124 | #define PCIE_ATU_UNR_REGION_CTRL1 0x00 |
| 125 | #define PCIE_ATU_UNR_REGION_CTRL2 0x04 |
| 126 | #define PCIE_ATU_UNR_LOWER_BASE 0x08 |
| 127 | #define PCIE_ATU_UNR_UPPER_BASE 0x0C |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 128 | #define PCIE_ATU_UNR_LOWER_LIMIT 0x10 |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 129 | #define PCIE_ATU_UNR_LOWER_TARGET 0x14 |
| 130 | #define PCIE_ATU_UNR_UPPER_TARGET 0x18 |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 131 | #define PCIE_ATU_UNR_UPPER_LIMIT 0x20 |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 132 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 133 | /* |
| 134 | * The default address offset between dbi_base and atu_base. Root controller |
| 135 | * drivers are not required to initialize atu_base if the offset matches this |
| 136 | * default; the driver core automatically derives atu_base from dbi_base using |
| 137 | * this offset, if atu_base not set. |
| 138 | */ |
| 139 | #define DEFAULT_DBI_ATU_OFFSET (0x3 << 20) |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 140 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 141 | /* Register address builder */ |
| 142 | #define PCIE_GET_ATU_OUTB_UNR_REG_OFFSET(region) \ |
| 143 | ((region) << 9) |
| 144 | |
| 145 | #define PCIE_GET_ATU_INB_UNR_REG_OFFSET(region) \ |
| 146 | (((region) << 9) | BIT(8)) |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 147 | |
| 148 | #define MAX_MSI_IRQS 256 |
| 149 | #define MAX_MSI_IRQS_PER_CTRL 32 |
| 150 | #define MAX_MSI_CTRLS (MAX_MSI_IRQS / MAX_MSI_IRQS_PER_CTRL) |
| 151 | #define MSI_REG_CTRL_BLOCK_SIZE 12 |
| 152 | #define MSI_DEF_NUM_VECTORS 32 |
| 153 | |
| 154 | /* Maximum number of inbound/outbound iATUs */ |
| 155 | #define MAX_IATU_IN 256 |
| 156 | #define MAX_IATU_OUT 256 |
| 157 | |
| 158 | struct pcie_port; |
| 159 | struct dw_pcie; |
| 160 | struct dw_pcie_ep; |
| 161 | |
| 162 | enum dw_pcie_region_type { |
| 163 | DW_PCIE_REGION_UNKNOWN, |
| 164 | DW_PCIE_REGION_INBOUND, |
| 165 | DW_PCIE_REGION_OUTBOUND, |
| 166 | }; |
| 167 | |
| 168 | enum dw_pcie_device_mode { |
| 169 | DW_PCIE_UNKNOWN_TYPE, |
| 170 | DW_PCIE_EP_TYPE, |
| 171 | DW_PCIE_LEG_EP_TYPE, |
| 172 | DW_PCIE_RC_TYPE, |
| 173 | }; |
| 174 | |
| 175 | struct dw_pcie_host_ops { |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 176 | int (*host_init)(struct pcie_port *pp); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 177 | void (*set_num_vectors)(struct pcie_port *pp); |
| 178 | int (*msi_host_init)(struct pcie_port *pp); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 179 | }; |
| 180 | |
| 181 | struct pcie_port { |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 182 | u64 cfg0_base; |
| 183 | void __iomem *va_cfg0_base; |
| 184 | u32 cfg0_size; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 185 | resource_size_t io_base; |
| 186 | phys_addr_t io_bus_addr; |
| 187 | u32 io_size; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 188 | int irq; |
| 189 | const struct dw_pcie_host_ops *ops; |
| 190 | int msi_irq; |
| 191 | struct irq_domain *irq_domain; |
| 192 | struct irq_domain *msi_domain; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 193 | u16 msi_msg; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 194 | dma_addr_t msi_data; |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 195 | struct irq_chip *msi_irq_chip; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 196 | u32 num_vectors; |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 197 | u32 irq_mask[MAX_MSI_CTRLS]; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 198 | struct pci_host_bridge *bridge; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 199 | raw_spinlock_t lock; |
| 200 | DECLARE_BITMAP(msi_irq_in_use, MAX_MSI_IRQS); |
| 201 | }; |
| 202 | |
| 203 | enum dw_pcie_as_type { |
| 204 | DW_PCIE_AS_UNKNOWN, |
| 205 | DW_PCIE_AS_MEM, |
| 206 | DW_PCIE_AS_IO, |
| 207 | }; |
| 208 | |
| 209 | struct dw_pcie_ep_ops { |
| 210 | void (*ep_init)(struct dw_pcie_ep *ep); |
| 211 | int (*raise_irq)(struct dw_pcie_ep *ep, u8 func_no, |
| 212 | enum pci_epc_irq_type type, u16 interrupt_num); |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 213 | const struct pci_epc_features* (*get_features)(struct dw_pcie_ep *ep); |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 214 | /* |
| 215 | * Provide a method to implement the different func config space |
| 216 | * access for different platform, if different func have different |
| 217 | * offset, return the offset of func. if use write a register way |
| 218 | * return a 0, and implement code in callback function of platform |
| 219 | * driver. |
| 220 | */ |
| 221 | unsigned int (*func_conf_select)(struct dw_pcie_ep *ep, u8 func_no); |
| 222 | }; |
| 223 | |
| 224 | struct dw_pcie_ep_func { |
| 225 | struct list_head list; |
| 226 | u8 func_no; |
| 227 | u8 msi_cap; /* MSI capability offset */ |
| 228 | u8 msix_cap; /* MSI-X capability offset */ |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 229 | }; |
| 230 | |
| 231 | struct dw_pcie_ep { |
| 232 | struct pci_epc *epc; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 233 | struct list_head func_list; |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 234 | const struct dw_pcie_ep_ops *ops; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 235 | phys_addr_t phys_base; |
| 236 | size_t addr_size; |
| 237 | size_t page_size; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 238 | u8 bar_to_atu[PCI_STD_NUM_BARS]; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 239 | phys_addr_t *outbound_addr; |
| 240 | unsigned long *ib_window_map; |
| 241 | unsigned long *ob_window_map; |
| 242 | u32 num_ib_windows; |
| 243 | u32 num_ob_windows; |
| 244 | void __iomem *msi_mem; |
| 245 | phys_addr_t msi_mem_phys; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 246 | struct pci_epf_bar *epf_bar[PCI_STD_NUM_BARS]; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 247 | }; |
| 248 | |
| 249 | struct dw_pcie_ops { |
| 250 | u64 (*cpu_addr_fixup)(struct dw_pcie *pcie, u64 cpu_addr); |
| 251 | u32 (*read_dbi)(struct dw_pcie *pcie, void __iomem *base, u32 reg, |
| 252 | size_t size); |
| 253 | void (*write_dbi)(struct dw_pcie *pcie, void __iomem *base, u32 reg, |
| 254 | size_t size, u32 val); |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 255 | void (*write_dbi2)(struct dw_pcie *pcie, void __iomem *base, u32 reg, |
| 256 | size_t size, u32 val); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 257 | int (*link_up)(struct dw_pcie *pcie); |
| 258 | int (*start_link)(struct dw_pcie *pcie); |
| 259 | void (*stop_link)(struct dw_pcie *pcie); |
| 260 | }; |
| 261 | |
| 262 | struct dw_pcie { |
| 263 | struct device *dev; |
| 264 | void __iomem *dbi_base; |
| 265 | void __iomem *dbi_base2; |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 266 | /* Used when iatu_unroll_enabled is true */ |
| 267 | void __iomem *atu_base; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 268 | u32 num_viewport; |
| 269 | u8 iatu_unroll_enabled; |
| 270 | struct pcie_port pp; |
| 271 | struct dw_pcie_ep ep; |
| 272 | const struct dw_pcie_ops *ops; |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 273 | unsigned int version; |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 274 | int num_lanes; |
| 275 | int link_gen; |
| 276 | u8 n_fts[2]; |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 277 | }; |
| 278 | |
| 279 | #define to_dw_pcie_from_pp(port) container_of((port), struct dw_pcie, pp) |
| 280 | |
| 281 | #define to_dw_pcie_from_ep(endpoint) \ |
| 282 | container_of((endpoint), struct dw_pcie, ep) |
| 283 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 284 | u8 dw_pcie_find_capability(struct dw_pcie *pci, u8 cap); |
| 285 | u16 dw_pcie_find_ext_capability(struct dw_pcie *pci, u8 cap); |
| 286 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 287 | int dw_pcie_read(void __iomem *addr, int size, u32 *val); |
| 288 | int dw_pcie_write(void __iomem *addr, int size, u32 val); |
| 289 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 290 | u32 dw_pcie_read_dbi(struct dw_pcie *pci, u32 reg, size_t size); |
| 291 | void dw_pcie_write_dbi(struct dw_pcie *pci, u32 reg, size_t size, u32 val); |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 292 | void dw_pcie_write_dbi2(struct dw_pcie *pci, u32 reg, size_t size, u32 val); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 293 | int dw_pcie_link_up(struct dw_pcie *pci); |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 294 | void dw_pcie_upconfig_setup(struct dw_pcie *pci); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 295 | int dw_pcie_wait_for_link(struct dw_pcie *pci); |
| 296 | void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, |
| 297 | int type, u64 cpu_addr, u64 pci_addr, |
| 298 | u32 size); |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 299 | void dw_pcie_prog_ep_outbound_atu(struct dw_pcie *pci, u8 func_no, int index, |
| 300 | int type, u64 cpu_addr, u64 pci_addr, |
| 301 | u32 size); |
| 302 | int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, u8 func_no, int index, |
| 303 | int bar, u64 cpu_addr, |
| 304 | enum dw_pcie_as_type as_type); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 305 | void dw_pcie_disable_atu(struct dw_pcie *pci, int index, |
| 306 | enum dw_pcie_region_type type); |
| 307 | void dw_pcie_setup(struct dw_pcie *pci); |
| 308 | |
| 309 | static inline void dw_pcie_writel_dbi(struct dw_pcie *pci, u32 reg, u32 val) |
| 310 | { |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 311 | dw_pcie_write_dbi(pci, reg, 0x4, val); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 312 | } |
| 313 | |
| 314 | static inline u32 dw_pcie_readl_dbi(struct dw_pcie *pci, u32 reg) |
| 315 | { |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 316 | return dw_pcie_read_dbi(pci, reg, 0x4); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 317 | } |
| 318 | |
| 319 | static inline void dw_pcie_writew_dbi(struct dw_pcie *pci, u32 reg, u16 val) |
| 320 | { |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 321 | dw_pcie_write_dbi(pci, reg, 0x2, val); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 322 | } |
| 323 | |
| 324 | static inline u16 dw_pcie_readw_dbi(struct dw_pcie *pci, u32 reg) |
| 325 | { |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 326 | return dw_pcie_read_dbi(pci, reg, 0x2); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 327 | } |
| 328 | |
| 329 | static inline void dw_pcie_writeb_dbi(struct dw_pcie *pci, u32 reg, u8 val) |
| 330 | { |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 331 | dw_pcie_write_dbi(pci, reg, 0x1, val); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | static inline u8 dw_pcie_readb_dbi(struct dw_pcie *pci, u32 reg) |
| 335 | { |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 336 | return dw_pcie_read_dbi(pci, reg, 0x1); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 337 | } |
| 338 | |
| 339 | static inline void dw_pcie_writel_dbi2(struct dw_pcie *pci, u32 reg, u32 val) |
| 340 | { |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 341 | dw_pcie_write_dbi2(pci, reg, 0x4, val); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 342 | } |
| 343 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 344 | static inline void dw_pcie_dbi_ro_wr_en(struct dw_pcie *pci) |
| 345 | { |
| 346 | u32 reg; |
| 347 | u32 val; |
| 348 | |
| 349 | reg = PCIE_MISC_CONTROL_1_OFF; |
| 350 | val = dw_pcie_readl_dbi(pci, reg); |
| 351 | val |= PCIE_DBI_RO_WR_EN; |
| 352 | dw_pcie_writel_dbi(pci, reg, val); |
| 353 | } |
| 354 | |
| 355 | static inline void dw_pcie_dbi_ro_wr_dis(struct dw_pcie *pci) |
| 356 | { |
| 357 | u32 reg; |
| 358 | u32 val; |
| 359 | |
| 360 | reg = PCIE_MISC_CONTROL_1_OFF; |
| 361 | val = dw_pcie_readl_dbi(pci, reg); |
| 362 | val &= ~PCIE_DBI_RO_WR_EN; |
| 363 | dw_pcie_writel_dbi(pci, reg, val); |
| 364 | } |
| 365 | |
| 366 | #ifdef CONFIG_PCIE_DW_HOST |
| 367 | irqreturn_t dw_handle_msi_irq(struct pcie_port *pp); |
| 368 | void dw_pcie_msi_init(struct pcie_port *pp); |
| 369 | void dw_pcie_free_msi(struct pcie_port *pp); |
| 370 | void dw_pcie_setup_rc(struct pcie_port *pp); |
| 371 | int dw_pcie_host_init(struct pcie_port *pp); |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 372 | void dw_pcie_host_deinit(struct pcie_port *pp); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 373 | int dw_pcie_allocate_domains(struct pcie_port *pp); |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 374 | void __iomem *dw_pcie_own_conf_map_bus(struct pci_bus *bus, unsigned int devfn, |
| 375 | int where); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 376 | #else |
| 377 | static inline irqreturn_t dw_handle_msi_irq(struct pcie_port *pp) |
| 378 | { |
| 379 | return IRQ_NONE; |
| 380 | } |
| 381 | |
| 382 | static inline void dw_pcie_msi_init(struct pcie_port *pp) |
| 383 | { |
| 384 | } |
| 385 | |
| 386 | static inline void dw_pcie_free_msi(struct pcie_port *pp) |
| 387 | { |
| 388 | } |
| 389 | |
| 390 | static inline void dw_pcie_setup_rc(struct pcie_port *pp) |
| 391 | { |
| 392 | } |
| 393 | |
| 394 | static inline int dw_pcie_host_init(struct pcie_port *pp) |
| 395 | { |
| 396 | return 0; |
| 397 | } |
| 398 | |
David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame] | 399 | static inline void dw_pcie_host_deinit(struct pcie_port *pp) |
| 400 | { |
| 401 | } |
| 402 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 403 | static inline int dw_pcie_allocate_domains(struct pcie_port *pp) |
| 404 | { |
| 405 | return 0; |
| 406 | } |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 407 | static inline void __iomem *dw_pcie_own_conf_map_bus(struct pci_bus *bus, |
| 408 | unsigned int devfn, |
| 409 | int where) |
| 410 | { |
| 411 | return NULL; |
| 412 | } |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 413 | #endif |
| 414 | |
| 415 | #ifdef CONFIG_PCIE_DW_EP |
| 416 | void dw_pcie_ep_linkup(struct dw_pcie_ep *ep); |
| 417 | int dw_pcie_ep_init(struct dw_pcie_ep *ep); |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 418 | int dw_pcie_ep_init_complete(struct dw_pcie_ep *ep); |
| 419 | void dw_pcie_ep_init_notify(struct dw_pcie_ep *ep); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 420 | void dw_pcie_ep_exit(struct dw_pcie_ep *ep); |
| 421 | int dw_pcie_ep_raise_legacy_irq(struct dw_pcie_ep *ep, u8 func_no); |
| 422 | int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no, |
| 423 | u8 interrupt_num); |
| 424 | int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no, |
| 425 | u16 interrupt_num); |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 426 | int dw_pcie_ep_raise_msix_irq_doorbell(struct dw_pcie_ep *ep, u8 func_no, |
| 427 | u16 interrupt_num); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 428 | void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar); |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 429 | struct dw_pcie_ep_func * |
| 430 | dw_pcie_ep_get_func_from_ep(struct dw_pcie_ep *ep, u8 func_no); |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 431 | #else |
| 432 | static inline void dw_pcie_ep_linkup(struct dw_pcie_ep *ep) |
| 433 | { |
| 434 | } |
| 435 | |
| 436 | static inline int dw_pcie_ep_init(struct dw_pcie_ep *ep) |
| 437 | { |
| 438 | return 0; |
| 439 | } |
| 440 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 441 | static inline int dw_pcie_ep_init_complete(struct dw_pcie_ep *ep) |
| 442 | { |
| 443 | return 0; |
| 444 | } |
| 445 | |
| 446 | static inline void dw_pcie_ep_init_notify(struct dw_pcie_ep *ep) |
| 447 | { |
| 448 | } |
| 449 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 450 | static inline void dw_pcie_ep_exit(struct dw_pcie_ep *ep) |
| 451 | { |
| 452 | } |
| 453 | |
| 454 | static inline int dw_pcie_ep_raise_legacy_irq(struct dw_pcie_ep *ep, u8 func_no) |
| 455 | { |
| 456 | return 0; |
| 457 | } |
| 458 | |
| 459 | static inline int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no, |
| 460 | u8 interrupt_num) |
| 461 | { |
| 462 | return 0; |
| 463 | } |
| 464 | |
| 465 | static inline int dw_pcie_ep_raise_msix_irq(struct dw_pcie_ep *ep, u8 func_no, |
| 466 | u16 interrupt_num) |
| 467 | { |
| 468 | return 0; |
| 469 | } |
| 470 | |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 471 | static inline int dw_pcie_ep_raise_msix_irq_doorbell(struct dw_pcie_ep *ep, |
| 472 | u8 func_no, |
| 473 | u16 interrupt_num) |
| 474 | { |
| 475 | return 0; |
| 476 | } |
| 477 | |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 478 | static inline void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar) |
| 479 | { |
| 480 | } |
Olivier Deprez | 157378f | 2022-04-04 15:47:50 +0200 | [diff] [blame^] | 481 | |
| 482 | static inline struct dw_pcie_ep_func * |
| 483 | dw_pcie_ep_get_func_from_ep(struct dw_pcie_ep *ep, u8 func_no) |
| 484 | { |
| 485 | return NULL; |
| 486 | } |
Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 487 | #endif |
| 488 | #endif /* _PCIE_DESIGNWARE_H */ |