1 /* SPDX-License-Identifier: GPL-2.0 */
2 // Copyright (c) 2017 Cadence
3 // Cadence PCIe controller driver.
4 // Author: Cyrille Pitchen <cyrille.pitchen@free-electrons.com>
6 #ifndef _PCIE_CADENCE_H
7 #define _PCIE_CADENCE_H
9 #include <linux/kernel.h>
10 #include <linux/pci.h>
11 #include <linux/pci-epf.h>
12 #include <linux/phy/phy.h>
14 /* Parameters for the waiting for link up routine */
15 #define LINK_WAIT_MAX_RETRIES 10
16 #define LINK_WAIT_USLEEP_MIN 90000
17 #define LINK_WAIT_USLEEP_MAX 100000
20 * Local Management Registers
22 #define CDNS_PCIE_LM_BASE 0x00100000
24 /* Vendor ID Register */
25 #define CDNS_PCIE_LM_ID (CDNS_PCIE_LM_BASE + 0x0044)
26 #define CDNS_PCIE_LM_ID_VENDOR_MASK GENMASK(15, 0)
27 #define CDNS_PCIE_LM_ID_VENDOR_SHIFT 0
28 #define CDNS_PCIE_LM_ID_VENDOR(vid) \
29 (((vid) << CDNS_PCIE_LM_ID_VENDOR_SHIFT) & CDNS_PCIE_LM_ID_VENDOR_MASK)
30 #define CDNS_PCIE_LM_ID_SUBSYS_MASK GENMASK(31, 16)
31 #define CDNS_PCIE_LM_ID_SUBSYS_SHIFT 16
32 #define CDNS_PCIE_LM_ID_SUBSYS(sub) \
33 (((sub) << CDNS_PCIE_LM_ID_SUBSYS_SHIFT) & CDNS_PCIE_LM_ID_SUBSYS_MASK)
35 /* Root Port Requestor ID Register */
36 #define CDNS_PCIE_LM_RP_RID (CDNS_PCIE_LM_BASE + 0x0228)
37 #define CDNS_PCIE_LM_RP_RID_MASK GENMASK(15, 0)
38 #define CDNS_PCIE_LM_RP_RID_SHIFT 0
39 #define CDNS_PCIE_LM_RP_RID_(rid) \
40 (((rid) << CDNS_PCIE_LM_RP_RID_SHIFT) & CDNS_PCIE_LM_RP_RID_MASK)
42 /* Endpoint Bus and Device Number Register */
43 #define CDNS_PCIE_LM_EP_ID (CDNS_PCIE_LM_BASE + 0x022c)
44 #define CDNS_PCIE_LM_EP_ID_DEV_MASK GENMASK(4, 0)
45 #define CDNS_PCIE_LM_EP_ID_DEV_SHIFT 0
46 #define CDNS_PCIE_LM_EP_ID_BUS_MASK GENMASK(15, 8)
47 #define CDNS_PCIE_LM_EP_ID_BUS_SHIFT 8
49 /* Endpoint Function f BAR b Configuration Registers */
50 #define CDNS_PCIE_LM_EP_FUNC_BAR_CFG(bar, fn) \
51 (((bar) < BAR_4) ? CDNS_PCIE_LM_EP_FUNC_BAR_CFG0(fn) : CDNS_PCIE_LM_EP_FUNC_BAR_CFG1(fn))
52 #define CDNS_PCIE_LM_EP_FUNC_BAR_CFG0(fn) \
53 (CDNS_PCIE_LM_BASE + 0x0240 + (fn) * 0x0008)
54 #define CDNS_PCIE_LM_EP_FUNC_BAR_CFG1(fn) \
55 (CDNS_PCIE_LM_BASE + 0x0244 + (fn) * 0x0008)
56 #define CDNS_PCIE_LM_EP_VFUNC_BAR_CFG(bar, fn) \
57 (((bar) < BAR_4) ? CDNS_PCIE_LM_EP_VFUNC_BAR_CFG0(fn) : CDNS_PCIE_LM_EP_VFUNC_BAR_CFG1(fn))
58 #define CDNS_PCIE_LM_EP_VFUNC_BAR_CFG0(fn) \
59 (CDNS_PCIE_LM_BASE + 0x0280 + (fn) * 0x0008)
60 #define CDNS_PCIE_LM_EP_VFUNC_BAR_CFG1(fn) \
61 (CDNS_PCIE_LM_BASE + 0x0284 + (fn) * 0x0008)
62 #define CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_APERTURE_MASK(b) \
63 (GENMASK(4, 0) << ((b) * 8))
64 #define CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_APERTURE(b, a) \
65 (((a) << ((b) * 8)) & CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_APERTURE_MASK(b))
66 #define CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_CTRL_MASK(b) \
67 (GENMASK(7, 5) << ((b) * 8))
68 #define CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_CTRL(b, c) \
69 (((c) << ((b) * 8 + 5)) & CDNS_PCIE_LM_EP_FUNC_BAR_CFG_BAR_CTRL_MASK(b))
71 /* Endpoint Function Configuration Register */
72 #define CDNS_PCIE_LM_EP_FUNC_CFG (CDNS_PCIE_LM_BASE + 0x02c0)
74 /* Root Complex BAR Configuration Register */
75 #define CDNS_PCIE_LM_RC_BAR_CFG (CDNS_PCIE_LM_BASE + 0x0300)
76 #define CDNS_PCIE_LM_RC_BAR_CFG_BAR0_APERTURE_MASK GENMASK(5, 0)
77 #define CDNS_PCIE_LM_RC_BAR_CFG_BAR0_APERTURE(a) \
78 (((a) << 0) & CDNS_PCIE_LM_RC_BAR_CFG_BAR0_APERTURE_MASK)
79 #define CDNS_PCIE_LM_RC_BAR_CFG_BAR0_CTRL_MASK GENMASK(8, 6)
80 #define CDNS_PCIE_LM_RC_BAR_CFG_BAR0_CTRL(c) \
81 (((c) << 6) & CDNS_PCIE_LM_RC_BAR_CFG_BAR0_CTRL_MASK)
82 #define CDNS_PCIE_LM_RC_BAR_CFG_BAR1_APERTURE_MASK GENMASK(13, 9)
83 #define CDNS_PCIE_LM_RC_BAR_CFG_BAR1_APERTURE(a) \
84 (((a) << 9) & CDNS_PCIE_LM_RC_BAR_CFG_BAR1_APERTURE_MASK)
85 #define CDNS_PCIE_LM_RC_BAR_CFG_BAR1_CTRL_MASK GENMASK(16, 14)
86 #define CDNS_PCIE_LM_RC_BAR_CFG_BAR1_CTRL(c) \
87 (((c) << 14) & CDNS_PCIE_LM_RC_BAR_CFG_BAR1_CTRL_MASK)
88 #define CDNS_PCIE_LM_RC_BAR_CFG_PREFETCH_MEM_ENABLE BIT(17)
89 #define CDNS_PCIE_LM_RC_BAR_CFG_PREFETCH_MEM_32BITS 0
90 #define CDNS_PCIE_LM_RC_BAR_CFG_PREFETCH_MEM_64BITS BIT(18)
91 #define CDNS_PCIE_LM_RC_BAR_CFG_IO_ENABLE BIT(19)
92 #define CDNS_PCIE_LM_RC_BAR_CFG_IO_16BITS 0
93 #define CDNS_PCIE_LM_RC_BAR_CFG_IO_32BITS BIT(20)
94 #define CDNS_PCIE_LM_RC_BAR_CFG_CHECK_ENABLE BIT(31)
96 /* BAR control values applicable to both Endpoint Function and Root Complex */
97 #define CDNS_PCIE_LM_BAR_CFG_CTRL_DISABLED 0x0
98 #define CDNS_PCIE_LM_BAR_CFG_CTRL_IO_32BITS 0x1
99 #define CDNS_PCIE_LM_BAR_CFG_CTRL_MEM_32BITS 0x4
100 #define CDNS_PCIE_LM_BAR_CFG_CTRL_PREFETCH_MEM_32BITS 0x5
101 #define CDNS_PCIE_LM_BAR_CFG_CTRL_MEM_64BITS 0x6
102 #define CDNS_PCIE_LM_BAR_CFG_CTRL_PREFETCH_MEM_64BITS 0x7
104 #define LM_RC_BAR_CFG_CTRL_DISABLED(bar) \
105 (CDNS_PCIE_LM_BAR_CFG_CTRL_DISABLED << (((bar) * 8) + 6))
106 #define LM_RC_BAR_CFG_CTRL_IO_32BITS(bar) \
107 (CDNS_PCIE_LM_BAR_CFG_CTRL_IO_32BITS << (((bar) * 8) + 6))
108 #define LM_RC_BAR_CFG_CTRL_MEM_32BITS(bar) \
109 (CDNS_PCIE_LM_BAR_CFG_CTRL_MEM_32BITS << (((bar) * 8) + 6))
110 #define LM_RC_BAR_CFG_CTRL_PREF_MEM_32BITS(bar) \
111 (CDNS_PCIE_LM_BAR_CFG_CTRL_PREFETCH_MEM_32BITS << (((bar) * 8) + 6))
112 #define LM_RC_BAR_CFG_CTRL_MEM_64BITS(bar) \
113 (CDNS_PCIE_LM_BAR_CFG_CTRL_MEM_64BITS << (((bar) * 8) + 6))
114 #define LM_RC_BAR_CFG_CTRL_PREF_MEM_64BITS(bar) \
115 (CDNS_PCIE_LM_BAR_CFG_CTRL_PREFETCH_MEM_64BITS << (((bar) * 8) + 6))
116 #define LM_RC_BAR_CFG_APERTURE(bar, aperture) \
117 (((aperture) - 2) << ((bar) * 8))
120 * Endpoint Function Registers (PCI configuration space for endpoint functions)
122 #define CDNS_PCIE_EP_FUNC_BASE(fn) (((fn) << 12) & GENMASK(19, 12))
124 #define CDNS_PCIE_EP_FUNC_MSI_CAP_OFFSET 0x90
125 #define CDNS_PCIE_EP_FUNC_MSIX_CAP_OFFSET 0xb0
126 #define CDNS_PCIE_EP_FUNC_SRIOV_CAP_OFFSET 0x200
129 * Root Port Registers (PCI configuration space for the root port function)
131 #define CDNS_PCIE_RP_BASE 0x00200000
132 #define CDNS_PCIE_RP_CAP_OFFSET 0xc0
135 * Address Translation Registers
137 #define CDNS_PCIE_AT_BASE 0x00400000
139 /* Region r Outbound AXI to PCIe Address Translation Register 0 */
140 #define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0(r) \
141 (CDNS_PCIE_AT_BASE + 0x0000 + ((r) & 0x1f) * 0x0020)
142 #define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_NBITS_MASK GENMASK(5, 0)
143 #define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_NBITS(nbits) \
144 (((nbits) - 1) & CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_NBITS_MASK)
145 #define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_DEVFN_MASK GENMASK(19, 12)
146 #define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_DEVFN(devfn) \
147 (((devfn) << 12) & CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_DEVFN_MASK)
148 #define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_BUS_MASK GENMASK(27, 20)
149 #define CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_BUS(bus) \
150 (((bus) << 20) & CDNS_PCIE_AT_OB_REGION_PCI_ADDR0_BUS_MASK)
152 /* Region r Outbound AXI to PCIe Address Translation Register 1 */
153 #define CDNS_PCIE_AT_OB_REGION_PCI_ADDR1(r) \
154 (CDNS_PCIE_AT_BASE + 0x0004 + ((r) & 0x1f) * 0x0020)
156 /* Region r Outbound PCIe Descriptor Register 0 */
157 #define CDNS_PCIE_AT_OB_REGION_DESC0(r) \
158 (CDNS_PCIE_AT_BASE + 0x0008 + ((r) & 0x1f) * 0x0020)
159 #define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_MASK GENMASK(3, 0)
160 #define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_MEM 0x2
161 #define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_IO 0x6
162 #define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_CONF_TYPE0 0xa
163 #define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_CONF_TYPE1 0xb
164 #define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_NORMAL_MSG 0xc
165 #define CDNS_PCIE_AT_OB_REGION_DESC0_TYPE_VENDOR_MSG 0xd
166 /* Bit 23 MUST be set in RC mode. */
167 #define CDNS_PCIE_AT_OB_REGION_DESC0_HARDCODED_RID BIT(23)
168 #define CDNS_PCIE_AT_OB_REGION_DESC0_DEVFN_MASK GENMASK(31, 24)
169 #define CDNS_PCIE_AT_OB_REGION_DESC0_DEVFN(devfn) \
170 (((devfn) << 24) & CDNS_PCIE_AT_OB_REGION_DESC0_DEVFN_MASK)
172 /* Region r Outbound PCIe Descriptor Register 1 */
173 #define CDNS_PCIE_AT_OB_REGION_DESC1(r) \
174 (CDNS_PCIE_AT_BASE + 0x000c + ((r) & 0x1f) * 0x0020)
175 #define CDNS_PCIE_AT_OB_REGION_DESC1_BUS_MASK GENMASK(7, 0)
176 #define CDNS_PCIE_AT_OB_REGION_DESC1_BUS(bus) \
177 ((bus) & CDNS_PCIE_AT_OB_REGION_DESC1_BUS_MASK)
179 /* Region r AXI Region Base Address Register 0 */
180 #define CDNS_PCIE_AT_OB_REGION_CPU_ADDR0(r) \
181 (CDNS_PCIE_AT_BASE + 0x0018 + ((r) & 0x1f) * 0x0020)
182 #define CDNS_PCIE_AT_OB_REGION_CPU_ADDR0_NBITS_MASK GENMASK(5, 0)
183 #define CDNS_PCIE_AT_OB_REGION_CPU_ADDR0_NBITS(nbits) \
184 (((nbits) - 1) & CDNS_PCIE_AT_OB_REGION_CPU_ADDR0_NBITS_MASK)
186 /* Region r AXI Region Base Address Register 1 */
187 #define CDNS_PCIE_AT_OB_REGION_CPU_ADDR1(r) \
188 (CDNS_PCIE_AT_BASE + 0x001c + ((r) & 0x1f) * 0x0020)
190 /* Root Port BAR Inbound PCIe to AXI Address Translation Register */
191 #define CDNS_PCIE_AT_IB_RP_BAR_ADDR0(bar) \
192 (CDNS_PCIE_AT_BASE + 0x0800 + (bar) * 0x0008)
193 #define CDNS_PCIE_AT_IB_RP_BAR_ADDR0_NBITS_MASK GENMASK(5, 0)
194 #define CDNS_PCIE_AT_IB_RP_BAR_ADDR0_NBITS(nbits) \
195 (((nbits) - 1) & CDNS_PCIE_AT_IB_RP_BAR_ADDR0_NBITS_MASK)
196 #define CDNS_PCIE_AT_IB_RP_BAR_ADDR1(bar) \
197 (CDNS_PCIE_AT_BASE + 0x0804 + (bar) * 0x0008)
199 /* AXI link down register */
200 #define CDNS_PCIE_AT_LINKDOWN (CDNS_PCIE_AT_BASE + 0x0824)
202 /* LTSSM Capabilities register */
203 #define CDNS_PCIE_LTSSM_CONTROL_CAP (CDNS_PCIE_LM_BASE + 0x0054)
204 #define CDNS_PCIE_DETECT_QUIET_MIN_DELAY_MASK GENMASK(2, 1)
205 #define CDNS_PCIE_DETECT_QUIET_MIN_DELAY_SHIFT 1
206 #define CDNS_PCIE_DETECT_QUIET_MIN_DELAY(delay) \
207 (((delay) << CDNS_PCIE_DETECT_QUIET_MIN_DELAY_SHIFT) & \
208 CDNS_PCIE_DETECT_QUIET_MIN_DELAY_MASK)
210 enum cdns_pcie_rp_bar {
211 RP_BAR_UNDEFINED = -1,
217 #define CDNS_PCIE_RP_MAX_IB 0x3
218 #define CDNS_PCIE_MAX_OB 32
220 struct cdns_pcie_rp_ib_bar {
225 /* Endpoint Function BAR Inbound PCIe to AXI Address Translation Register */
226 #define CDNS_PCIE_AT_IB_EP_FUNC_BAR_ADDR0(fn, bar) \
227 (CDNS_PCIE_AT_BASE + 0x0840 + (fn) * 0x0040 + (bar) * 0x0008)
228 #define CDNS_PCIE_AT_IB_EP_FUNC_BAR_ADDR1(fn, bar) \
229 (CDNS_PCIE_AT_BASE + 0x0844 + (fn) * 0x0040 + (bar) * 0x0008)
231 /* Normal/Vendor specific message access: offset inside some outbound region */
232 #define CDNS_PCIE_NORMAL_MSG_ROUTING_MASK GENMASK(7, 5)
233 #define CDNS_PCIE_NORMAL_MSG_ROUTING(route) \
234 (((route) << 5) & CDNS_PCIE_NORMAL_MSG_ROUTING_MASK)
235 #define CDNS_PCIE_NORMAL_MSG_CODE_MASK GENMASK(15, 8)
236 #define CDNS_PCIE_NORMAL_MSG_CODE(code) \
237 (((code) << 8) & CDNS_PCIE_NORMAL_MSG_CODE_MASK)
238 #define CDNS_PCIE_MSG_NO_DATA BIT(16)
242 enum cdns_pcie_msg_code {
243 MSG_CODE_ASSERT_INTA = 0x20,
244 MSG_CODE_ASSERT_INTB = 0x21,
245 MSG_CODE_ASSERT_INTC = 0x22,
246 MSG_CODE_ASSERT_INTD = 0x23,
247 MSG_CODE_DEASSERT_INTA = 0x24,
248 MSG_CODE_DEASSERT_INTB = 0x25,
249 MSG_CODE_DEASSERT_INTC = 0x26,
250 MSG_CODE_DEASSERT_INTD = 0x27,
253 enum cdns_pcie_msg_routing {
254 /* Route to Root Complex */
257 /* Use Address Routing */
263 /* Route as Broadcast Message from Root Complex */
266 /* Local message; terminate at receiver (INTx messages) */
269 /* Gather & route to Root Complex (PME_TO_Ack message) */
273 struct cdns_pcie_ops {
274 int (*start_link)(struct cdns_pcie *pcie);
275 void (*stop_link)(struct cdns_pcie *pcie);
276 bool (*link_up)(struct cdns_pcie *pcie);
277 u64 (*cpu_addr_fixup)(struct cdns_pcie *pcie, u64 cpu_addr);
281 * struct cdns_pcie - private data for Cadence PCIe controller drivers
282 * @reg_base: IO mapped register base
283 * @mem_res: start/end offsets in the physical system memory to map PCI accesses
284 * @dev: PCIe controller
285 * @is_rc: tell whether the PCIe controller mode is Root Complex or Endpoint.
286 * @phy_count: number of supported PHY devices
287 * @phy: list of pointers to specific PHY control blocks
288 * @link: list of pointers to corresponding device link representations
289 * @ops: Platform-specific ops to control various inputs from Cadence PCIe
293 void __iomem *reg_base;
294 struct resource *mem_res;
299 struct device_link **link;
300 const struct cdns_pcie_ops *ops;
304 * struct cdns_pcie_rc - private data for this PCIe Root Complex driver
305 * @pcie: Cadence PCIe controller
306 * @dev: pointer to PCIe device
307 * @cfg_res: start/end offsets in the physical system memory to map PCI
308 * configuration space accesses
309 * @cfg_base: IO mapped window to access the PCI configuration space of a
310 * single function at a time
311 * @vendor_id: PCI vendor ID
312 * @device_id: PCI device ID
313 * @avail_ib_bar: Satus of RP_BAR0, RP_BAR1 and RP_NO_BAR if it's free or
315 * @quirk_retrain_flag: Retrain link as quirk for PCIe Gen2
316 * @quirk_detect_quiet_flag: LTSSM Detect Quiet min delay set as quirk
318 struct cdns_pcie_rc {
319 struct cdns_pcie pcie;
320 struct resource *cfg_res;
321 void __iomem *cfg_base;
324 bool avail_ib_bar[CDNS_PCIE_RP_MAX_IB];
325 unsigned int quirk_retrain_flag:1;
326 unsigned int quirk_detect_quiet_flag:1;
330 * struct cdns_pcie_epf - Structure to hold info about endpoint function
331 * @epf: Info about virtual functions attached to the physical function
332 * @epf_bar: reference to the pci_epf_bar for the six Base Address Registers
334 struct cdns_pcie_epf {
335 struct cdns_pcie_epf *epf;
336 struct pci_epf_bar *epf_bar[PCI_STD_NUM_BARS];
340 * struct cdns_pcie_ep - private data for this PCIe endpoint controller driver
341 * @pcie: Cadence PCIe controller
342 * @max_regions: maximum number of regions supported by hardware
343 * @ob_region_map: bitmask of mapped outbound regions
344 * @ob_addr: base addresses in the AXI bus where the outbound regions start
345 * @irq_phys_addr: base address on the AXI bus where the MSI/legacy IRQ
346 * dedicated outbound regions is mapped.
347 * @irq_cpu_addr: base address in the CPU space where a write access triggers
348 * the sending of a memory write (MSI) / normal message (legacy
349 * IRQ) TLP through the PCIe bus.
350 * @irq_pci_addr: used to save the current mapping of the MSI/legacy IRQ
351 * dedicated outbound region.
352 * @irq_pci_fn: the latest PCI function that has updated the mapping of
353 * the MSI/legacy IRQ dedicated outbound region.
354 * @irq_pending: bitmask of asserted legacy IRQs.
355 * @lock: spin lock to disable interrupts while modifying PCIe controller
356 * registers fields (RMW) accessible by both remote RC and EP to
357 * minimize time between read and write
358 * @epf: Structure to hold info about endpoint function
359 * @quirk_detect_quiet_flag: LTSSM Detect Quiet min delay set as quirk
361 struct cdns_pcie_ep {
362 struct cdns_pcie pcie;
364 unsigned long ob_region_map;
365 phys_addr_t *ob_addr;
366 phys_addr_t irq_phys_addr;
367 void __iomem *irq_cpu_addr;
371 /* protect writing to PCI_STATUS while raising legacy interrupts */
373 struct cdns_pcie_epf *epf;
374 unsigned int quirk_detect_quiet_flag:1;
378 /* Register access */
379 static inline void cdns_pcie_writel(struct cdns_pcie *pcie, u32 reg, u32 value)
381 writel(value, pcie->reg_base + reg);
384 static inline u32 cdns_pcie_readl(struct cdns_pcie *pcie, u32 reg)
386 return readl(pcie->reg_base + reg);
389 static inline u32 cdns_pcie_read_sz(void __iomem *addr, int size)
391 void __iomem *aligned_addr = PTR_ALIGN_DOWN(addr, 0x4);
392 unsigned int offset = (unsigned long)addr & 0x3;
393 u32 val = readl(aligned_addr);
395 if (!IS_ALIGNED((uintptr_t)addr, size)) {
396 pr_warn("Address %p and size %d are not aligned\n", addr, size);
403 return (val >> (8 * offset)) & ((1 << (size * 8)) - 1);
406 static inline void cdns_pcie_write_sz(void __iomem *addr, int size, u32 value)
408 void __iomem *aligned_addr = PTR_ALIGN_DOWN(addr, 0x4);
409 unsigned int offset = (unsigned long)addr & 0x3;
413 if (!IS_ALIGNED((uintptr_t)addr, size)) {
414 pr_warn("Address %p and size %d are not aligned\n", addr, size);
423 mask = ~(((1 << (size * 8)) - 1) << (offset * 8));
424 val = readl(aligned_addr) & mask;
425 val |= value << (offset * 8);
426 writel(val, aligned_addr);
429 /* Root Port register access */
430 static inline void cdns_pcie_rp_writeb(struct cdns_pcie *pcie,
433 void __iomem *addr = pcie->reg_base + CDNS_PCIE_RP_BASE + reg;
435 cdns_pcie_write_sz(addr, 0x1, value);
438 static inline void cdns_pcie_rp_writew(struct cdns_pcie *pcie,
441 void __iomem *addr = pcie->reg_base + CDNS_PCIE_RP_BASE + reg;
443 cdns_pcie_write_sz(addr, 0x2, value);
446 static inline u16 cdns_pcie_rp_readw(struct cdns_pcie *pcie, u32 reg)
448 void __iomem *addr = pcie->reg_base + CDNS_PCIE_RP_BASE + reg;
450 return cdns_pcie_read_sz(addr, 0x2);
453 /* Endpoint Function register access */
454 static inline void cdns_pcie_ep_fn_writeb(struct cdns_pcie *pcie, u8 fn,
457 void __iomem *addr = pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg;
459 cdns_pcie_write_sz(addr, 0x1, value);
462 static inline void cdns_pcie_ep_fn_writew(struct cdns_pcie *pcie, u8 fn,
465 void __iomem *addr = pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg;
467 cdns_pcie_write_sz(addr, 0x2, value);
470 static inline void cdns_pcie_ep_fn_writel(struct cdns_pcie *pcie, u8 fn,
473 writel(value, pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg);
476 static inline u16 cdns_pcie_ep_fn_readw(struct cdns_pcie *pcie, u8 fn, u32 reg)
478 void __iomem *addr = pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg;
480 return cdns_pcie_read_sz(addr, 0x2);
483 static inline u32 cdns_pcie_ep_fn_readl(struct cdns_pcie *pcie, u8 fn, u32 reg)
485 return readl(pcie->reg_base + CDNS_PCIE_EP_FUNC_BASE(fn) + reg);
488 static inline int cdns_pcie_start_link(struct cdns_pcie *pcie)
490 if (pcie->ops->start_link)
491 return pcie->ops->start_link(pcie);
496 static inline void cdns_pcie_stop_link(struct cdns_pcie *pcie)
498 if (pcie->ops->stop_link)
499 pcie->ops->stop_link(pcie);
502 static inline bool cdns_pcie_link_up(struct cdns_pcie *pcie)
504 if (pcie->ops->link_up)
505 return pcie->ops->link_up(pcie);
510 #ifdef CONFIG_PCIE_CADENCE_HOST
511 int cdns_pcie_host_setup(struct cdns_pcie_rc *rc);
512 void __iomem *cdns_pci_map_bus(struct pci_bus *bus, unsigned int devfn,
515 static inline int cdns_pcie_host_setup(struct cdns_pcie_rc *rc)
520 static inline void __iomem *cdns_pci_map_bus(struct pci_bus *bus, unsigned int devfn,
527 #ifdef CONFIG_PCIE_CADENCE_EP
528 int cdns_pcie_ep_setup(struct cdns_pcie_ep *ep);
530 static inline int cdns_pcie_ep_setup(struct cdns_pcie_ep *ep)
536 void cdns_pcie_detect_quiet_min_delay_set(struct cdns_pcie *pcie);
538 void cdns_pcie_set_outbound_region(struct cdns_pcie *pcie, u8 busnr, u8 fn,
540 u64 cpu_addr, u64 pci_addr, size_t size);
542 void cdns_pcie_set_outbound_region_for_normal_msg(struct cdns_pcie *pcie,
544 u32 r, u64 cpu_addr);
546 void cdns_pcie_reset_outbound_region(struct cdns_pcie *pcie, u32 r);
547 void cdns_pcie_disable_phy(struct cdns_pcie *pcie);
548 int cdns_pcie_enable_phy(struct cdns_pcie *pcie);
549 int cdns_pcie_init_phy(struct device *dev, struct cdns_pcie *pcie);
550 extern const struct dev_pm_ops cdns_pcie_pm_ops;
552 #endif /* _PCIE_CADENCE_H */