Bjorn Helgaas | 8cfab3c | 2018-01-26 12:50:27 -0600 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
Jingoo Han | 4b1ced8 | 2013-07-31 17:14:10 +0900 | [diff] [blame] | 2 | /* |
Bjorn Helgaas | 96291d5 | 2017-09-01 16:35:50 -0500 | [diff] [blame] | 3 | * Synopsys DesignWare PCIe host controller driver |
Jingoo Han | 4b1ced8 | 2013-07-31 17:14:10 +0900 | [diff] [blame] | 4 | * |
| 5 | * Copyright (C) 2013 Samsung Electronics Co., Ltd. |
| 6 | * http://www.samsung.com |
| 7 | * |
| 8 | * Author: Jingoo Han <jg1.han@samsung.com> |
Jingoo Han | 4b1ced8 | 2013-07-31 17:14:10 +0900 | [diff] [blame] | 9 | */ |
| 10 | |
Seungwon Jeon | 18edf45 | 2013-10-09 09:12:21 -0600 | [diff] [blame] | 11 | #ifndef _PCIE_DESIGNWARE_H |
| 12 | #define _PCIE_DESIGNWARE_H |
| 13 | |
Niklas Cassel | 111111a | 2017-12-20 00:29:22 +0100 | [diff] [blame] | 14 | #include <linux/dma-mapping.h> |
Kishon Vijay Abraham I | feb85d9 | 2017-02-15 18:48:17 +0530 | [diff] [blame] | 15 | #include <linux/irq.h> |
| 16 | #include <linux/msi.h> |
| 17 | #include <linux/pci.h> |
| 18 | |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 19 | #include <linux/pci-epc.h> |
| 20 | #include <linux/pci-epf.h> |
| 21 | |
Kishon Vijay Abraham I | b90dc39 | 2017-02-15 18:48:10 +0530 | [diff] [blame] | 22 | /* Parameters for the waiting for link up routine */ |
| 23 | #define LINK_WAIT_MAX_RETRIES 10 |
| 24 | #define LINK_WAIT_USLEEP_MIN 90000 |
| 25 | #define LINK_WAIT_USLEEP_MAX 100000 |
| 26 | |
| 27 | /* Parameters for the waiting for iATU enabled routine */ |
| 28 | #define LINK_WAIT_MAX_IATU_RETRIES 5 |
| 29 | #define LINK_WAIT_IATU_MIN 9000 |
| 30 | #define LINK_WAIT_IATU_MAX 10000 |
| 31 | |
| 32 | /* Synopsys-specific PCIe configuration registers */ |
| 33 | #define PCIE_PORT_LINK_CONTROL 0x710 |
| 34 | #define PORT_LINK_MODE_MASK (0x3f << 16) |
| 35 | #define PORT_LINK_MODE_1_LANES (0x1 << 16) |
| 36 | #define PORT_LINK_MODE_2_LANES (0x3 << 16) |
| 37 | #define PORT_LINK_MODE_4_LANES (0x7 << 16) |
| 38 | #define PORT_LINK_MODE_8_LANES (0xf << 16) |
| 39 | |
| 40 | #define PCIE_LINK_WIDTH_SPEED_CONTROL 0x80C |
| 41 | #define PORT_LOGIC_SPEED_CHANGE (0x1 << 17) |
| 42 | #define PORT_LOGIC_LINK_WIDTH_MASK (0x1f << 8) |
| 43 | #define PORT_LOGIC_LINK_WIDTH_1_LANES (0x1 << 8) |
| 44 | #define PORT_LOGIC_LINK_WIDTH_2_LANES (0x2 << 8) |
| 45 | #define PORT_LOGIC_LINK_WIDTH_4_LANES (0x4 << 8) |
| 46 | #define PORT_LOGIC_LINK_WIDTH_8_LANES (0x8 << 8) |
| 47 | |
| 48 | #define PCIE_MSI_ADDR_LO 0x820 |
| 49 | #define PCIE_MSI_ADDR_HI 0x824 |
| 50 | #define PCIE_MSI_INTR0_ENABLE 0x828 |
| 51 | #define PCIE_MSI_INTR0_MASK 0x82C |
| 52 | #define PCIE_MSI_INTR0_STATUS 0x830 |
| 53 | |
| 54 | #define PCIE_ATU_VIEWPORT 0x900 |
| 55 | #define PCIE_ATU_REGION_INBOUND (0x1 << 31) |
| 56 | #define PCIE_ATU_REGION_OUTBOUND (0x0 << 31) |
| 57 | #define PCIE_ATU_REGION_INDEX2 (0x2 << 0) |
| 58 | #define PCIE_ATU_REGION_INDEX1 (0x1 << 0) |
| 59 | #define PCIE_ATU_REGION_INDEX0 (0x0 << 0) |
| 60 | #define PCIE_ATU_CR1 0x904 |
| 61 | #define PCIE_ATU_TYPE_MEM (0x0 << 0) |
| 62 | #define PCIE_ATU_TYPE_IO (0x2 << 0) |
| 63 | #define PCIE_ATU_TYPE_CFG0 (0x4 << 0) |
| 64 | #define PCIE_ATU_TYPE_CFG1 (0x5 << 0) |
| 65 | #define PCIE_ATU_CR2 0x908 |
| 66 | #define PCIE_ATU_ENABLE (0x1 << 31) |
| 67 | #define PCIE_ATU_BAR_MODE_ENABLE (0x1 << 30) |
| 68 | #define PCIE_ATU_LOWER_BASE 0x90C |
| 69 | #define PCIE_ATU_UPPER_BASE 0x910 |
| 70 | #define PCIE_ATU_LIMIT 0x914 |
| 71 | #define PCIE_ATU_LOWER_TARGET 0x918 |
| 72 | #define PCIE_ATU_BUS(x) (((x) & 0xff) << 24) |
| 73 | #define PCIE_ATU_DEV(x) (((x) & 0x1f) << 19) |
| 74 | #define PCIE_ATU_FUNC(x) (((x) & 0x7) << 16) |
| 75 | #define PCIE_ATU_UPPER_TARGET 0x91C |
| 76 | |
Hou Zhiqiang | e44abfe | 2017-08-28 18:52:59 +0800 | [diff] [blame] | 77 | #define PCIE_MISC_CONTROL_1_OFF 0x8BC |
| 78 | #define PCIE_DBI_RO_WR_EN (0x1 << 0) |
| 79 | |
Kishon Vijay Abraham I | b90dc39 | 2017-02-15 18:48:10 +0530 | [diff] [blame] | 80 | /* |
| 81 | * iATU Unroll-specific register definitions |
| 82 | * From 4.80 core version the address translation will be made by unroll |
| 83 | */ |
| 84 | #define PCIE_ATU_UNR_REGION_CTRL1 0x00 |
| 85 | #define PCIE_ATU_UNR_REGION_CTRL2 0x04 |
| 86 | #define PCIE_ATU_UNR_LOWER_BASE 0x08 |
| 87 | #define PCIE_ATU_UNR_UPPER_BASE 0x0C |
| 88 | #define PCIE_ATU_UNR_LIMIT 0x10 |
| 89 | #define PCIE_ATU_UNR_LOWER_TARGET 0x14 |
| 90 | #define PCIE_ATU_UNR_UPPER_TARGET 0x18 |
| 91 | |
| 92 | /* Register address builder */ |
| 93 | #define PCIE_GET_ATU_OUTB_UNR_REG_OFFSET(region) \ |
| 94 | ((0x3 << 20) | ((region) << 9)) |
| 95 | |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 96 | #define PCIE_GET_ATU_INB_UNR_REG_OFFSET(region) \ |
| 97 | ((0x3 << 20) | ((region) << 9) | (0x1 << 8)) |
| 98 | |
| 99 | #define MSI_MESSAGE_CONTROL 0x52 |
| 100 | #define MSI_CAP_MMC_SHIFT 1 |
Niklas Cassel | 099a95f | 2017-12-20 00:29:23 +0100 | [diff] [blame] | 101 | #define MSI_CAP_MMC_MASK (7 << MSI_CAP_MMC_SHIFT) |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 102 | #define MSI_CAP_MME_SHIFT 4 |
Kishon Vijay Abraham I | a134a45 | 2017-12-19 15:25:41 +0530 | [diff] [blame] | 103 | #define MSI_CAP_MSI_EN_MASK 0x1 |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 104 | #define MSI_CAP_MME_MASK (7 << MSI_CAP_MME_SHIFT) |
| 105 | #define MSI_MESSAGE_ADDR_L32 0x54 |
| 106 | #define MSI_MESSAGE_ADDR_U32 0x58 |
Niklas Cassel | 6f6d787 | 2017-12-20 00:29:27 +0100 | [diff] [blame] | 107 | #define MSI_MESSAGE_DATA_32 0x58 |
| 108 | #define MSI_MESSAGE_DATA_64 0x5C |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 109 | |
Gustavo Pimentel | 1f319cb | 2018-03-06 11:54:55 +0000 | [diff] [blame] | 110 | #define MAX_MSI_IRQS 256 |
| 111 | #define MAX_MSI_IRQS_PER_CTRL 32 |
| 112 | #define MAX_MSI_CTRLS (MAX_MSI_IRQS / MAX_MSI_IRQS_PER_CTRL) |
Gustavo Pimentel | 76cbf06 | 2018-05-14 16:09:50 +0100 | [diff] [blame] | 113 | #define MSI_REG_CTRL_BLOCK_SIZE 12 |
Gustavo Pimentel | 7c5925a | 2018-03-06 11:54:53 +0000 | [diff] [blame] | 114 | #define MSI_DEF_NUM_VECTORS 32 |
Jingoo Han | f342d94 | 2013-09-06 15:54:59 +0900 | [diff] [blame] | 115 | |
Niklas Cassel | ad4a5be | 2017-12-14 14:01:44 +0100 | [diff] [blame] | 116 | /* Maximum number of inbound/outbound iATUs */ |
| 117 | #define MAX_IATU_IN 256 |
| 118 | #define MAX_IATU_OUT 256 |
| 119 | |
Kishon Vijay Abraham I | 442ec4c | 2017-02-15 18:48:14 +0530 | [diff] [blame] | 120 | struct pcie_port; |
| 121 | struct dw_pcie; |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 122 | struct dw_pcie_ep; |
| 123 | |
| 124 | enum dw_pcie_region_type { |
| 125 | DW_PCIE_REGION_UNKNOWN, |
| 126 | DW_PCIE_REGION_INBOUND, |
| 127 | DW_PCIE_REGION_OUTBOUND, |
| 128 | }; |
Kishon Vijay Abraham I | 442ec4c | 2017-02-15 18:48:14 +0530 | [diff] [blame] | 129 | |
Kishon Vijay Abraham I | 608793e | 2017-03-27 15:15:08 +0530 | [diff] [blame] | 130 | enum dw_pcie_device_mode { |
| 131 | DW_PCIE_UNKNOWN_TYPE, |
| 132 | DW_PCIE_EP_TYPE, |
| 133 | DW_PCIE_LEG_EP_TYPE, |
| 134 | DW_PCIE_RC_TYPE, |
| 135 | }; |
| 136 | |
Kishon Vijay Abraham I | 442ec4c | 2017-02-15 18:48:14 +0530 | [diff] [blame] | 137 | struct dw_pcie_host_ops { |
| 138 | int (*rd_own_conf)(struct pcie_port *pp, int where, int size, u32 *val); |
| 139 | int (*wr_own_conf)(struct pcie_port *pp, int where, int size, u32 val); |
| 140 | int (*rd_other_conf)(struct pcie_port *pp, struct pci_bus *bus, |
| 141 | unsigned int devfn, int where, int size, u32 *val); |
| 142 | int (*wr_other_conf)(struct pcie_port *pp, struct pci_bus *bus, |
| 143 | unsigned int devfn, int where, int size, u32 val); |
Bjorn Andersson | 4a30176 | 2017-07-15 23:39:45 -0700 | [diff] [blame] | 144 | int (*host_init)(struct pcie_port *pp); |
Kishon Vijay Abraham I | 442ec4c | 2017-02-15 18:48:14 +0530 | [diff] [blame] | 145 | void (*msi_set_irq)(struct pcie_port *pp, int irq); |
| 146 | void (*msi_clear_irq)(struct pcie_port *pp, int irq); |
| 147 | phys_addr_t (*get_msi_addr)(struct pcie_port *pp); |
| 148 | u32 (*get_msi_data)(struct pcie_port *pp, int pos); |
| 149 | void (*scan_bus)(struct pcie_port *pp); |
Gustavo Pimentel | 7c5925a | 2018-03-06 11:54:53 +0000 | [diff] [blame] | 150 | void (*set_num_vectors)(struct pcie_port *pp); |
Gustavo Pimentel | 3f43ccc | 2018-03-06 11:54:54 +0000 | [diff] [blame] | 151 | int (*msi_host_init)(struct pcie_port *pp); |
Gustavo Pimentel | 7c5925a | 2018-03-06 11:54:53 +0000 | [diff] [blame] | 152 | void (*msi_irq_ack)(int irq, struct pcie_port *pp); |
Kishon Vijay Abraham I | 442ec4c | 2017-02-15 18:48:14 +0530 | [diff] [blame] | 153 | }; |
| 154 | |
Jingoo Han | 4b1ced8 | 2013-07-31 17:14:10 +0900 | [diff] [blame] | 155 | struct pcie_port { |
Jingoo Han | 4b1ced8 | 2013-07-31 17:14:10 +0900 | [diff] [blame] | 156 | u8 root_bus_nr; |
Jingoo Han | 4b1ced8 | 2013-07-31 17:14:10 +0900 | [diff] [blame] | 157 | u64 cfg0_base; |
| 158 | void __iomem *va_cfg0_base; |
Pratyush Anand | adf70fc | 2014-09-05 17:48:54 -0600 | [diff] [blame] | 159 | u32 cfg0_size; |
Jingoo Han | 4b1ced8 | 2013-07-31 17:14:10 +0900 | [diff] [blame] | 160 | u64 cfg1_base; |
| 161 | void __iomem *va_cfg1_base; |
Pratyush Anand | adf70fc | 2014-09-05 17:48:54 -0600 | [diff] [blame] | 162 | u32 cfg1_size; |
Zhou Wang | 0021d22 | 2015-10-29 19:57:06 -0500 | [diff] [blame] | 163 | resource_size_t io_base; |
Pratyush Anand | adf70fc | 2014-09-05 17:48:54 -0600 | [diff] [blame] | 164 | phys_addr_t io_bus_addr; |
| 165 | u32 io_size; |
Jingoo Han | 4b1ced8 | 2013-07-31 17:14:10 +0900 | [diff] [blame] | 166 | u64 mem_base; |
Pratyush Anand | adf70fc | 2014-09-05 17:48:54 -0600 | [diff] [blame] | 167 | phys_addr_t mem_bus_addr; |
| 168 | u32 mem_size; |
Zhou Wang | 0021d22 | 2015-10-29 19:57:06 -0500 | [diff] [blame] | 169 | struct resource *cfg; |
| 170 | struct resource *io; |
| 171 | struct resource *mem; |
| 172 | struct resource *busn; |
Jingoo Han | 4b1ced8 | 2013-07-31 17:14:10 +0900 | [diff] [blame] | 173 | int irq; |
Jisheng Zhang | 4ab2e7c | 2017-06-05 16:53:46 +0800 | [diff] [blame] | 174 | const struct dw_pcie_host_ops *ops; |
Jingoo Han | f342d94 | 2013-09-06 15:54:59 +0900 | [diff] [blame] | 175 | int msi_irq; |
Pratyush Anand | 904d0e7 | 2013-10-09 21:32:12 +0900 | [diff] [blame] | 176 | struct irq_domain *irq_domain; |
Gustavo Pimentel | 7c5925a | 2018-03-06 11:54:53 +0000 | [diff] [blame] | 177 | struct irq_domain *msi_domain; |
Niklas Cassel | 111111a | 2017-12-20 00:29:22 +0100 | [diff] [blame] | 178 | dma_addr_t msi_data; |
Gustavo Pimentel | 7c5925a | 2018-03-06 11:54:53 +0000 | [diff] [blame] | 179 | u32 num_vectors; |
| 180 | u32 irq_status[MAX_MSI_CTRLS]; |
| 181 | raw_spinlock_t lock; |
Jingoo Han | f342d94 | 2013-09-06 15:54:59 +0900 | [diff] [blame] | 182 | DECLARE_BITMAP(msi_irq_in_use, MAX_MSI_IRQS); |
Jingoo Han | 4b1ced8 | 2013-07-31 17:14:10 +0900 | [diff] [blame] | 183 | }; |
| 184 | |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 185 | enum dw_pcie_as_type { |
| 186 | DW_PCIE_AS_UNKNOWN, |
| 187 | DW_PCIE_AS_MEM, |
| 188 | DW_PCIE_AS_IO, |
| 189 | }; |
| 190 | |
| 191 | struct dw_pcie_ep_ops { |
| 192 | void (*ep_init)(struct dw_pcie_ep *ep); |
Bjorn Helgaas | 1609336 | 2018-02-01 11:36:07 -0600 | [diff] [blame] | 193 | int (*raise_irq)(struct dw_pcie_ep *ep, u8 func_no, |
| 194 | enum pci_epc_irq_type type, u8 interrupt_num); |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 195 | }; |
| 196 | |
| 197 | struct dw_pcie_ep { |
| 198 | struct pci_epc *epc; |
| 199 | struct dw_pcie_ep_ops *ops; |
| 200 | phys_addr_t phys_base; |
| 201 | size_t addr_size; |
Kishon Vijay Abraham I | a937fe0 | 2017-08-18 20:28:02 +0530 | [diff] [blame] | 202 | size_t page_size; |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 203 | u8 bar_to_atu[6]; |
| 204 | phys_addr_t *outbound_addr; |
Niklas Cassel | ad4a5be | 2017-12-14 14:01:44 +0100 | [diff] [blame] | 205 | unsigned long *ib_window_map; |
| 206 | unsigned long *ob_window_map; |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 207 | u32 num_ib_windows; |
| 208 | u32 num_ob_windows; |
Niklas Cassel | 2fd0c9d | 2017-12-20 00:29:25 +0100 | [diff] [blame] | 209 | void __iomem *msi_mem; |
| 210 | phys_addr_t msi_mem_phys; |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 211 | }; |
| 212 | |
Kishon Vijay Abraham I | 442ec4c | 2017-02-15 18:48:14 +0530 | [diff] [blame] | 213 | struct dw_pcie_ops { |
Niklas Cassel | b6900ae | 2017-12-20 00:29:36 +0100 | [diff] [blame] | 214 | u64 (*cpu_addr_fixup)(struct dw_pcie *pcie, u64 cpu_addr); |
Kishon Vijay Abraham I | a509d7d | 2017-03-13 19:13:26 +0530 | [diff] [blame] | 215 | u32 (*read_dbi)(struct dw_pcie *pcie, void __iomem *base, u32 reg, |
| 216 | size_t size); |
| 217 | void (*write_dbi)(struct dw_pcie *pcie, void __iomem *base, u32 reg, |
| 218 | size_t size, u32 val); |
Kishon Vijay Abraham I | 442ec4c | 2017-02-15 18:48:14 +0530 | [diff] [blame] | 219 | int (*link_up)(struct dw_pcie *pcie); |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 220 | int (*start_link)(struct dw_pcie *pcie); |
| 221 | void (*stop_link)(struct dw_pcie *pcie); |
Jingoo Han | 4b1ced8 | 2013-07-31 17:14:10 +0900 | [diff] [blame] | 222 | }; |
| 223 | |
Kishon Vijay Abraham I | 442ec4c | 2017-02-15 18:48:14 +0530 | [diff] [blame] | 224 | struct dw_pcie { |
| 225 | struct device *dev; |
| 226 | void __iomem *dbi_base; |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 227 | void __iomem *dbi_base2; |
Kishon Vijay Abraham I | 442ec4c | 2017-02-15 18:48:14 +0530 | [diff] [blame] | 228 | u32 num_viewport; |
| 229 | u8 iatu_unroll_enabled; |
| 230 | struct pcie_port pp; |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 231 | struct dw_pcie_ep ep; |
Kishon Vijay Abraham I | 442ec4c | 2017-02-15 18:48:14 +0530 | [diff] [blame] | 232 | const struct dw_pcie_ops *ops; |
| 233 | }; |
| 234 | |
| 235 | #define to_dw_pcie_from_pp(port) container_of((port), struct dw_pcie, pp) |
| 236 | |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 237 | #define to_dw_pcie_from_ep(endpoint) \ |
| 238 | container_of((endpoint), struct dw_pcie, ep) |
| 239 | |
Kishon Vijay Abraham I | 19ce01cc | 2017-02-15 18:48:12 +0530 | [diff] [blame] | 240 | int dw_pcie_read(void __iomem *addr, int size, u32 *val); |
| 241 | int dw_pcie_write(void __iomem *addr, int size, u32 val); |
Seungwon Jeon | 18edf45 | 2013-10-09 09:12:21 -0600 | [diff] [blame] | 242 | |
Kishon Vijay Abraham I | a509d7d | 2017-03-13 19:13:26 +0530 | [diff] [blame] | 243 | u32 __dw_pcie_read_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg, |
| 244 | size_t size); |
| 245 | void __dw_pcie_write_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg, |
| 246 | size_t size, u32 val); |
Kishon Vijay Abraham I | 442ec4c | 2017-02-15 18:48:14 +0530 | [diff] [blame] | 247 | int dw_pcie_link_up(struct dw_pcie *pci); |
| 248 | int dw_pcie_wait_for_link(struct dw_pcie *pci); |
Kishon Vijay Abraham I | feb85d9 | 2017-02-15 18:48:17 +0530 | [diff] [blame] | 249 | void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, |
| 250 | int type, u64 cpu_addr, u64 pci_addr, |
| 251 | u32 size); |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 252 | int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, int index, int bar, |
| 253 | u64 cpu_addr, enum dw_pcie_as_type as_type); |
| 254 | void dw_pcie_disable_atu(struct dw_pcie *pci, int index, |
| 255 | enum dw_pcie_region_type type); |
Kishon Vijay Abraham I | feb85d9 | 2017-02-15 18:48:17 +0530 | [diff] [blame] | 256 | void dw_pcie_setup(struct dw_pcie *pci); |
Kishon Vijay Abraham I | a056020 | 2017-02-15 18:48:18 +0530 | [diff] [blame] | 257 | |
Kishon Vijay Abraham I | b50b2db | 2017-03-13 19:13:25 +0530 | [diff] [blame] | 258 | static inline void dw_pcie_writel_dbi(struct dw_pcie *pci, u32 reg, u32 val) |
| 259 | { |
Kishon Vijay Abraham I | a509d7d | 2017-03-13 19:13:26 +0530 | [diff] [blame] | 260 | __dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x4, val); |
Kishon Vijay Abraham I | b50b2db | 2017-03-13 19:13:25 +0530 | [diff] [blame] | 261 | } |
| 262 | |
| 263 | static inline u32 dw_pcie_readl_dbi(struct dw_pcie *pci, u32 reg) |
| 264 | { |
Kishon Vijay Abraham I | a509d7d | 2017-03-13 19:13:26 +0530 | [diff] [blame] | 265 | return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x4); |
Kishon Vijay Abraham I | b50b2db | 2017-03-13 19:13:25 +0530 | [diff] [blame] | 266 | } |
| 267 | |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 268 | static inline void dw_pcie_writew_dbi(struct dw_pcie *pci, u32 reg, u16 val) |
| 269 | { |
| 270 | __dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x2, val); |
| 271 | } |
| 272 | |
| 273 | static inline u16 dw_pcie_readw_dbi(struct dw_pcie *pci, u32 reg) |
| 274 | { |
| 275 | return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x2); |
| 276 | } |
| 277 | |
| 278 | static inline void dw_pcie_writeb_dbi(struct dw_pcie *pci, u32 reg, u8 val) |
| 279 | { |
| 280 | __dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x1, val); |
| 281 | } |
| 282 | |
| 283 | static inline u8 dw_pcie_readb_dbi(struct dw_pcie *pci, u32 reg) |
| 284 | { |
| 285 | return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x1); |
| 286 | } |
| 287 | |
| 288 | static inline void dw_pcie_writel_dbi2(struct dw_pcie *pci, u32 reg, u32 val) |
| 289 | { |
| 290 | __dw_pcie_write_dbi(pci, pci->dbi_base2, reg, 0x4, val); |
| 291 | } |
| 292 | |
| 293 | static inline u32 dw_pcie_readl_dbi2(struct dw_pcie *pci, u32 reg) |
| 294 | { |
| 295 | return __dw_pcie_read_dbi(pci, pci->dbi_base2, reg, 0x4); |
| 296 | } |
| 297 | |
Hou Zhiqiang | e44abfe | 2017-08-28 18:52:59 +0800 | [diff] [blame] | 298 | static inline void dw_pcie_dbi_ro_wr_en(struct dw_pcie *pci) |
| 299 | { |
| 300 | u32 reg; |
| 301 | u32 val; |
| 302 | |
| 303 | reg = PCIE_MISC_CONTROL_1_OFF; |
| 304 | val = dw_pcie_readl_dbi(pci, reg); |
| 305 | val |= PCIE_DBI_RO_WR_EN; |
| 306 | dw_pcie_writel_dbi(pci, reg, val); |
| 307 | } |
| 308 | |
| 309 | static inline void dw_pcie_dbi_ro_wr_dis(struct dw_pcie *pci) |
| 310 | { |
| 311 | u32 reg; |
| 312 | u32 val; |
| 313 | |
| 314 | reg = PCIE_MISC_CONTROL_1_OFF; |
| 315 | val = dw_pcie_readl_dbi(pci, reg); |
| 316 | val &= ~PCIE_DBI_RO_WR_EN; |
| 317 | dw_pcie_writel_dbi(pci, reg, val); |
| 318 | } |
| 319 | |
Kishon Vijay Abraham I | a056020 | 2017-02-15 18:48:18 +0530 | [diff] [blame] | 320 | #ifdef CONFIG_PCIE_DW_HOST |
| 321 | irqreturn_t dw_handle_msi_irq(struct pcie_port *pp); |
| 322 | void dw_pcie_msi_init(struct pcie_port *pp); |
Gustavo Pimentel | 7c5925a | 2018-03-06 11:54:53 +0000 | [diff] [blame] | 323 | void dw_pcie_free_msi(struct pcie_port *pp); |
Kishon Vijay Abraham I | a056020 | 2017-02-15 18:48:18 +0530 | [diff] [blame] | 324 | void dw_pcie_setup_rc(struct pcie_port *pp); |
| 325 | int dw_pcie_host_init(struct pcie_port *pp); |
Gustavo Pimentel | 7c5925a | 2018-03-06 11:54:53 +0000 | [diff] [blame] | 326 | int dw_pcie_allocate_domains(struct pcie_port *pp); |
Kishon Vijay Abraham I | a056020 | 2017-02-15 18:48:18 +0530 | [diff] [blame] | 327 | #else |
| 328 | static inline irqreturn_t dw_handle_msi_irq(struct pcie_port *pp) |
| 329 | { |
| 330 | return IRQ_NONE; |
| 331 | } |
| 332 | |
| 333 | static inline void dw_pcie_msi_init(struct pcie_port *pp) |
| 334 | { |
| 335 | } |
| 336 | |
Gustavo Pimentel | 7c5925a | 2018-03-06 11:54:53 +0000 | [diff] [blame] | 337 | static inline void dw_pcie_free_msi(struct pcie_port *pp) |
| 338 | { |
| 339 | } |
| 340 | |
Kishon Vijay Abraham I | a056020 | 2017-02-15 18:48:18 +0530 | [diff] [blame] | 341 | static inline void dw_pcie_setup_rc(struct pcie_port *pp) |
| 342 | { |
| 343 | } |
| 344 | |
| 345 | static inline int dw_pcie_host_init(struct pcie_port *pp) |
| 346 | { |
| 347 | return 0; |
| 348 | } |
Gustavo Pimentel | 7c5925a | 2018-03-06 11:54:53 +0000 | [diff] [blame] | 349 | |
| 350 | static inline int dw_pcie_allocate_domains(struct pcie_port *pp) |
| 351 | { |
| 352 | return 0; |
| 353 | } |
Kishon Vijay Abraham I | a056020 | 2017-02-15 18:48:18 +0530 | [diff] [blame] | 354 | #endif |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 355 | |
| 356 | #ifdef CONFIG_PCIE_DW_EP |
| 357 | void dw_pcie_ep_linkup(struct dw_pcie_ep *ep); |
| 358 | int dw_pcie_ep_init(struct dw_pcie_ep *ep); |
| 359 | void dw_pcie_ep_exit(struct dw_pcie_ep *ep); |
Bjorn Helgaas | 1609336 | 2018-02-01 11:36:07 -0600 | [diff] [blame] | 360 | int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no, |
| 361 | u8 interrupt_num); |
Niklas Cassel | 9e71811 | 2017-12-20 00:29:26 +0100 | [diff] [blame] | 362 | void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar); |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 363 | #else |
| 364 | static inline void dw_pcie_ep_linkup(struct dw_pcie_ep *ep) |
| 365 | { |
| 366 | } |
| 367 | |
| 368 | static inline int dw_pcie_ep_init(struct dw_pcie_ep *ep) |
| 369 | { |
| 370 | return 0; |
| 371 | } |
| 372 | |
| 373 | static inline void dw_pcie_ep_exit(struct dw_pcie_ep *ep) |
| 374 | { |
| 375 | } |
Niklas Cassel | 9e71811 | 2017-12-20 00:29:26 +0100 | [diff] [blame] | 376 | |
Bjorn Helgaas | 1609336 | 2018-02-01 11:36:07 -0600 | [diff] [blame] | 377 | static inline int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no, |
Niklas Cassel | 6f6d787 | 2017-12-20 00:29:27 +0100 | [diff] [blame] | 378 | u8 interrupt_num) |
| 379 | { |
| 380 | return 0; |
| 381 | } |
| 382 | |
Niklas Cassel | 9e71811 | 2017-12-20 00:29:26 +0100 | [diff] [blame] | 383 | static inline void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar) |
| 384 | { |
| 385 | } |
Kishon Vijay Abraham I | f8aed6e | 2017-03-27 15:15:05 +0530 | [diff] [blame] | 386 | #endif |
Seungwon Jeon | 18edf45 | 2013-10-09 09:12:21 -0600 | [diff] [blame] | 387 | #endif /* _PCIE_DESIGNWARE_H */ |