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Bjorn Helgaas8cfab3c2018-01-26 12:50:27 -06001/* SPDX-License-Identifier: GPL-2.0 */
Jingoo Han4b1ced82013-07-31 17:14:10 +09002/*
Bjorn Helgaas96291d52017-09-01 16:35:50 -05003 * Synopsys DesignWare PCIe host controller driver
Jingoo Han4b1ced82013-07-31 17:14:10 +09004 *
5 * Copyright (C) 2013 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com
7 *
8 * Author: Jingoo Han <jg1.han@samsung.com>
Jingoo Han4b1ced82013-07-31 17:14:10 +09009 */
10
Seungwon Jeon18edf452013-10-09 09:12:21 -060011#ifndef _PCIE_DESIGNWARE_H
12#define _PCIE_DESIGNWARE_H
13
Niklas Cassel111111a2017-12-20 00:29:22 +010014#include <linux/dma-mapping.h>
Kishon Vijay Abraham Ifeb85d92017-02-15 18:48:17 +053015#include <linux/irq.h>
16#include <linux/msi.h>
17#include <linux/pci.h>
18
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +053019#include <linux/pci-epc.h>
20#include <linux/pci-epf.h>
21
Kishon Vijay Abraham Ib90dc392017-02-15 18:48:10 +053022/* 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 Zhiqiange44abfe2017-08-28 18:52:59 +080077#define PCIE_MISC_CONTROL_1_OFF 0x8BC
78#define PCIE_DBI_RO_WR_EN (0x1 << 0)
79
Kishon Vijay Abraham Ib90dc392017-02-15 18:48:10 +053080/*
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 If8aed6e2017-03-27 15:15:05 +053096#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 Cassel099a95f2017-12-20 00:29:23 +0100101#define MSI_CAP_MMC_MASK (7 << MSI_CAP_MMC_SHIFT)
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530102#define MSI_CAP_MME_SHIFT 4
Kishon Vijay Abraham Ia134a452017-12-19 15:25:41 +0530103#define MSI_CAP_MSI_EN_MASK 0x1
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530104#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 Cassel6f6d7872017-12-20 00:29:27 +0100107#define MSI_MESSAGE_DATA_32 0x58
108#define MSI_MESSAGE_DATA_64 0x5C
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530109
Jingoo Hanf342d942013-09-06 15:54:59 +0900110/*
111 * Maximum number of MSI IRQs can be 256 per controller. But keep
112 * it 32 as of now. Probably we will never need more than 32. If needed,
113 * then increment it in multiple of 32.
114 */
115#define MAX_MSI_IRQS 32
116#define MAX_MSI_CTRLS (MAX_MSI_IRQS / 32)
Gustavo Pimentel7c5925a2018-03-06 11:54:53 +0000117#define MSI_DEF_NUM_VECTORS 32
Jingoo Hanf342d942013-09-06 15:54:59 +0900118
Niklas Casselad4a5be2017-12-14 14:01:44 +0100119/* Maximum number of inbound/outbound iATUs */
120#define MAX_IATU_IN 256
121#define MAX_IATU_OUT 256
122
Kishon Vijay Abraham I442ec4c2017-02-15 18:48:14 +0530123struct pcie_port;
124struct dw_pcie;
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530125struct dw_pcie_ep;
126
127enum dw_pcie_region_type {
128 DW_PCIE_REGION_UNKNOWN,
129 DW_PCIE_REGION_INBOUND,
130 DW_PCIE_REGION_OUTBOUND,
131};
Kishon Vijay Abraham I442ec4c2017-02-15 18:48:14 +0530132
Kishon Vijay Abraham I608793e2017-03-27 15:15:08 +0530133enum dw_pcie_device_mode {
134 DW_PCIE_UNKNOWN_TYPE,
135 DW_PCIE_EP_TYPE,
136 DW_PCIE_LEG_EP_TYPE,
137 DW_PCIE_RC_TYPE,
138};
139
Kishon Vijay Abraham I442ec4c2017-02-15 18:48:14 +0530140struct dw_pcie_host_ops {
141 int (*rd_own_conf)(struct pcie_port *pp, int where, int size, u32 *val);
142 int (*wr_own_conf)(struct pcie_port *pp, int where, int size, u32 val);
143 int (*rd_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
144 unsigned int devfn, int where, int size, u32 *val);
145 int (*wr_other_conf)(struct pcie_port *pp, struct pci_bus *bus,
146 unsigned int devfn, int where, int size, u32 val);
Bjorn Andersson4a301762017-07-15 23:39:45 -0700147 int (*host_init)(struct pcie_port *pp);
Kishon Vijay Abraham I442ec4c2017-02-15 18:48:14 +0530148 void (*msi_set_irq)(struct pcie_port *pp, int irq);
149 void (*msi_clear_irq)(struct pcie_port *pp, int irq);
150 phys_addr_t (*get_msi_addr)(struct pcie_port *pp);
151 u32 (*get_msi_data)(struct pcie_port *pp, int pos);
152 void (*scan_bus)(struct pcie_port *pp);
Gustavo Pimentel7c5925a2018-03-06 11:54:53 +0000153 void (*set_num_vectors)(struct pcie_port *pp);
Kishon Vijay Abraham I442ec4c2017-02-15 18:48:14 +0530154 int (*msi_host_init)(struct pcie_port *pp, struct msi_controller *chip);
Gustavo Pimentel7c5925a2018-03-06 11:54:53 +0000155 void (*msi_irq_ack)(int irq, struct pcie_port *pp);
Kishon Vijay Abraham I442ec4c2017-02-15 18:48:14 +0530156};
157
Jingoo Han4b1ced82013-07-31 17:14:10 +0900158struct pcie_port {
Jingoo Han4b1ced82013-07-31 17:14:10 +0900159 u8 root_bus_nr;
Jingoo Han4b1ced82013-07-31 17:14:10 +0900160 u64 cfg0_base;
161 void __iomem *va_cfg0_base;
Pratyush Anandadf70fc2014-09-05 17:48:54 -0600162 u32 cfg0_size;
Jingoo Han4b1ced82013-07-31 17:14:10 +0900163 u64 cfg1_base;
164 void __iomem *va_cfg1_base;
Pratyush Anandadf70fc2014-09-05 17:48:54 -0600165 u32 cfg1_size;
Zhou Wang0021d222015-10-29 19:57:06 -0500166 resource_size_t io_base;
Pratyush Anandadf70fc2014-09-05 17:48:54 -0600167 phys_addr_t io_bus_addr;
168 u32 io_size;
Jingoo Han4b1ced82013-07-31 17:14:10 +0900169 u64 mem_base;
Pratyush Anandadf70fc2014-09-05 17:48:54 -0600170 phys_addr_t mem_bus_addr;
171 u32 mem_size;
Zhou Wang0021d222015-10-29 19:57:06 -0500172 struct resource *cfg;
173 struct resource *io;
174 struct resource *mem;
175 struct resource *busn;
Jingoo Han4b1ced82013-07-31 17:14:10 +0900176 int irq;
Jisheng Zhang4ab2e7c2017-06-05 16:53:46 +0800177 const struct dw_pcie_host_ops *ops;
Jingoo Hanf342d942013-09-06 15:54:59 +0900178 int msi_irq;
Pratyush Anand904d0e72013-10-09 21:32:12 +0900179 struct irq_domain *irq_domain;
Gustavo Pimentel7c5925a2018-03-06 11:54:53 +0000180 struct irq_domain *msi_domain;
Niklas Cassel111111a2017-12-20 00:29:22 +0100181 dma_addr_t msi_data;
Gustavo Pimentel7c5925a2018-03-06 11:54:53 +0000182 u32 num_vectors;
183 u32 irq_status[MAX_MSI_CTRLS];
184 raw_spinlock_t lock;
Jingoo Hanf342d942013-09-06 15:54:59 +0900185 DECLARE_BITMAP(msi_irq_in_use, MAX_MSI_IRQS);
Jingoo Han4b1ced82013-07-31 17:14:10 +0900186};
187
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530188enum dw_pcie_as_type {
189 DW_PCIE_AS_UNKNOWN,
190 DW_PCIE_AS_MEM,
191 DW_PCIE_AS_IO,
192};
193
194struct dw_pcie_ep_ops {
195 void (*ep_init)(struct dw_pcie_ep *ep);
Bjorn Helgaas16093362018-02-01 11:36:07 -0600196 int (*raise_irq)(struct dw_pcie_ep *ep, u8 func_no,
197 enum pci_epc_irq_type type, u8 interrupt_num);
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530198};
199
200struct dw_pcie_ep {
201 struct pci_epc *epc;
202 struct dw_pcie_ep_ops *ops;
203 phys_addr_t phys_base;
204 size_t addr_size;
Kishon Vijay Abraham Ia937fe02017-08-18 20:28:02 +0530205 size_t page_size;
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530206 u8 bar_to_atu[6];
207 phys_addr_t *outbound_addr;
Niklas Casselad4a5be2017-12-14 14:01:44 +0100208 unsigned long *ib_window_map;
209 unsigned long *ob_window_map;
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530210 u32 num_ib_windows;
211 u32 num_ob_windows;
Niklas Cassel2fd0c9d2017-12-20 00:29:25 +0100212 void __iomem *msi_mem;
213 phys_addr_t msi_mem_phys;
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530214};
215
Kishon Vijay Abraham I442ec4c2017-02-15 18:48:14 +0530216struct dw_pcie_ops {
Niklas Casselb6900ae2017-12-20 00:29:36 +0100217 u64 (*cpu_addr_fixup)(struct dw_pcie *pcie, u64 cpu_addr);
Kishon Vijay Abraham Ia509d7d2017-03-13 19:13:26 +0530218 u32 (*read_dbi)(struct dw_pcie *pcie, void __iomem *base, u32 reg,
219 size_t size);
220 void (*write_dbi)(struct dw_pcie *pcie, void __iomem *base, u32 reg,
221 size_t size, u32 val);
Kishon Vijay Abraham I442ec4c2017-02-15 18:48:14 +0530222 int (*link_up)(struct dw_pcie *pcie);
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530223 int (*start_link)(struct dw_pcie *pcie);
224 void (*stop_link)(struct dw_pcie *pcie);
Jingoo Han4b1ced82013-07-31 17:14:10 +0900225};
226
Kishon Vijay Abraham I442ec4c2017-02-15 18:48:14 +0530227struct dw_pcie {
228 struct device *dev;
229 void __iomem *dbi_base;
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530230 void __iomem *dbi_base2;
Kishon Vijay Abraham I442ec4c2017-02-15 18:48:14 +0530231 u32 num_viewport;
232 u8 iatu_unroll_enabled;
233 struct pcie_port pp;
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530234 struct dw_pcie_ep ep;
Kishon Vijay Abraham I442ec4c2017-02-15 18:48:14 +0530235 const struct dw_pcie_ops *ops;
236};
237
238#define to_dw_pcie_from_pp(port) container_of((port), struct dw_pcie, pp)
239
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530240#define to_dw_pcie_from_ep(endpoint) \
241 container_of((endpoint), struct dw_pcie, ep)
242
Kishon Vijay Abraham I19ce01cc2017-02-15 18:48:12 +0530243int dw_pcie_read(void __iomem *addr, int size, u32 *val);
244int dw_pcie_write(void __iomem *addr, int size, u32 val);
Seungwon Jeon18edf452013-10-09 09:12:21 -0600245
Kishon Vijay Abraham Ia509d7d2017-03-13 19:13:26 +0530246u32 __dw_pcie_read_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg,
247 size_t size);
248void __dw_pcie_write_dbi(struct dw_pcie *pci, void __iomem *base, u32 reg,
249 size_t size, u32 val);
Kishon Vijay Abraham I442ec4c2017-02-15 18:48:14 +0530250int dw_pcie_link_up(struct dw_pcie *pci);
251int dw_pcie_wait_for_link(struct dw_pcie *pci);
Kishon Vijay Abraham Ifeb85d92017-02-15 18:48:17 +0530252void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index,
253 int type, u64 cpu_addr, u64 pci_addr,
254 u32 size);
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530255int dw_pcie_prog_inbound_atu(struct dw_pcie *pci, int index, int bar,
256 u64 cpu_addr, enum dw_pcie_as_type as_type);
257void dw_pcie_disable_atu(struct dw_pcie *pci, int index,
258 enum dw_pcie_region_type type);
Kishon Vijay Abraham Ifeb85d92017-02-15 18:48:17 +0530259void dw_pcie_setup(struct dw_pcie *pci);
Kishon Vijay Abraham Ia0560202017-02-15 18:48:18 +0530260
Kishon Vijay Abraham Ib50b2db2017-03-13 19:13:25 +0530261static inline void dw_pcie_writel_dbi(struct dw_pcie *pci, u32 reg, u32 val)
262{
Kishon Vijay Abraham Ia509d7d2017-03-13 19:13:26 +0530263 __dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x4, val);
Kishon Vijay Abraham Ib50b2db2017-03-13 19:13:25 +0530264}
265
266static inline u32 dw_pcie_readl_dbi(struct dw_pcie *pci, u32 reg)
267{
Kishon Vijay Abraham Ia509d7d2017-03-13 19:13:26 +0530268 return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x4);
Kishon Vijay Abraham Ib50b2db2017-03-13 19:13:25 +0530269}
270
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530271static inline void dw_pcie_writew_dbi(struct dw_pcie *pci, u32 reg, u16 val)
272{
273 __dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x2, val);
274}
275
276static inline u16 dw_pcie_readw_dbi(struct dw_pcie *pci, u32 reg)
277{
278 return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x2);
279}
280
281static inline void dw_pcie_writeb_dbi(struct dw_pcie *pci, u32 reg, u8 val)
282{
283 __dw_pcie_write_dbi(pci, pci->dbi_base, reg, 0x1, val);
284}
285
286static inline u8 dw_pcie_readb_dbi(struct dw_pcie *pci, u32 reg)
287{
288 return __dw_pcie_read_dbi(pci, pci->dbi_base, reg, 0x1);
289}
290
291static inline void dw_pcie_writel_dbi2(struct dw_pcie *pci, u32 reg, u32 val)
292{
293 __dw_pcie_write_dbi(pci, pci->dbi_base2, reg, 0x4, val);
294}
295
296static inline u32 dw_pcie_readl_dbi2(struct dw_pcie *pci, u32 reg)
297{
298 return __dw_pcie_read_dbi(pci, pci->dbi_base2, reg, 0x4);
299}
300
Hou Zhiqiange44abfe2017-08-28 18:52:59 +0800301static inline void dw_pcie_dbi_ro_wr_en(struct dw_pcie *pci)
302{
303 u32 reg;
304 u32 val;
305
306 reg = PCIE_MISC_CONTROL_1_OFF;
307 val = dw_pcie_readl_dbi(pci, reg);
308 val |= PCIE_DBI_RO_WR_EN;
309 dw_pcie_writel_dbi(pci, reg, val);
310}
311
312static inline void dw_pcie_dbi_ro_wr_dis(struct dw_pcie *pci)
313{
314 u32 reg;
315 u32 val;
316
317 reg = PCIE_MISC_CONTROL_1_OFF;
318 val = dw_pcie_readl_dbi(pci, reg);
319 val &= ~PCIE_DBI_RO_WR_EN;
320 dw_pcie_writel_dbi(pci, reg, val);
321}
322
Kishon Vijay Abraham Ia0560202017-02-15 18:48:18 +0530323#ifdef CONFIG_PCIE_DW_HOST
324irqreturn_t dw_handle_msi_irq(struct pcie_port *pp);
325void dw_pcie_msi_init(struct pcie_port *pp);
Gustavo Pimentel7c5925a2018-03-06 11:54:53 +0000326void dw_pcie_free_msi(struct pcie_port *pp);
Kishon Vijay Abraham Ia0560202017-02-15 18:48:18 +0530327void dw_pcie_setup_rc(struct pcie_port *pp);
328int dw_pcie_host_init(struct pcie_port *pp);
Gustavo Pimentel7c5925a2018-03-06 11:54:53 +0000329int dw_pcie_allocate_domains(struct pcie_port *pp);
Kishon Vijay Abraham Ia0560202017-02-15 18:48:18 +0530330#else
331static inline irqreturn_t dw_handle_msi_irq(struct pcie_port *pp)
332{
333 return IRQ_NONE;
334}
335
336static inline void dw_pcie_msi_init(struct pcie_port *pp)
337{
338}
339
Gustavo Pimentel7c5925a2018-03-06 11:54:53 +0000340static inline void dw_pcie_free_msi(struct pcie_port *pp)
341{
342}
343
Kishon Vijay Abraham Ia0560202017-02-15 18:48:18 +0530344static inline void dw_pcie_setup_rc(struct pcie_port *pp)
345{
346}
347
348static inline int dw_pcie_host_init(struct pcie_port *pp)
349{
350 return 0;
351}
Gustavo Pimentel7c5925a2018-03-06 11:54:53 +0000352
353static inline int dw_pcie_allocate_domains(struct pcie_port *pp)
354{
355 return 0;
356}
Kishon Vijay Abraham Ia0560202017-02-15 18:48:18 +0530357#endif
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530358
359#ifdef CONFIG_PCIE_DW_EP
360void dw_pcie_ep_linkup(struct dw_pcie_ep *ep);
361int dw_pcie_ep_init(struct dw_pcie_ep *ep);
362void dw_pcie_ep_exit(struct dw_pcie_ep *ep);
Bjorn Helgaas16093362018-02-01 11:36:07 -0600363int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no,
364 u8 interrupt_num);
Niklas Cassel9e718112017-12-20 00:29:26 +0100365void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar);
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530366#else
367static inline void dw_pcie_ep_linkup(struct dw_pcie_ep *ep)
368{
369}
370
371static inline int dw_pcie_ep_init(struct dw_pcie_ep *ep)
372{
373 return 0;
374}
375
376static inline void dw_pcie_ep_exit(struct dw_pcie_ep *ep)
377{
378}
Niklas Cassel9e718112017-12-20 00:29:26 +0100379
Bjorn Helgaas16093362018-02-01 11:36:07 -0600380static inline int dw_pcie_ep_raise_msi_irq(struct dw_pcie_ep *ep, u8 func_no,
Niklas Cassel6f6d7872017-12-20 00:29:27 +0100381 u8 interrupt_num)
382{
383 return 0;
384}
385
Niklas Cassel9e718112017-12-20 00:29:26 +0100386static inline void dw_pcie_ep_reset_bar(struct dw_pcie *pci, enum pci_barno bar)
387{
388}
Kishon Vijay Abraham If8aed6e2017-03-27 15:15:05 +0530389#endif
Seungwon Jeon18edf452013-10-09 09:12:21 -0600390#endif /* _PCIE_DESIGNWARE_H */