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1 | // SPDX-License-Identifier: GPL-2.0+ OR X11 |
2 | /* | |
3 | * Copyright 2019 NXP | |
4 | * | |
5 | * PCIe DM U-Boot driver for Freescale PowerPC SoCs | |
6 | * Author: Hou Zhiqiang <[email protected]> | |
7 | */ | |
8 | ||
9 | #include <common.h> | |
10 | #include <dm.h> | |
11 | #include <malloc.h> | |
12 | #include <mapmem.h> | |
13 | #include <pci.h> | |
14 | #include <asm/fsl_pci.h> | |
15 | #include <asm/fsl_serdes.h> | |
16 | #include <asm/io.h> | |
17 | #include "pcie_fsl.h" | |
18 | ||
19 | LIST_HEAD(fsl_pcie_list); | |
20 | ||
21 | static int fsl_pcie_link_up(struct fsl_pcie *pcie); | |
22 | ||
23 | static int fsl_pcie_addr_valid(struct fsl_pcie *pcie, pci_dev_t bdf) | |
24 | { | |
25 | struct udevice *bus = pcie->bus; | |
26 | ||
27 | if (!pcie->enabled) | |
28 | return -ENXIO; | |
29 | ||
30 | if (PCI_BUS(bdf) < bus->seq) | |
31 | return -EINVAL; | |
32 | ||
33 | if (PCI_BUS(bdf) > bus->seq && (!fsl_pcie_link_up(pcie) || pcie->mode)) | |
34 | return -EINVAL; | |
35 | ||
36 | if (PCI_BUS(bdf) == bus->seq && (PCI_DEV(bdf) > 0 || PCI_FUNC(bdf) > 0)) | |
37 | return -EINVAL; | |
38 | ||
39 | if (PCI_BUS(bdf) == (bus->seq + 1) && (PCI_DEV(bdf) > 0)) | |
40 | return -EINVAL; | |
41 | ||
42 | return 0; | |
43 | } | |
44 | ||
45 | static int fsl_pcie_read_config(struct udevice *bus, pci_dev_t bdf, | |
46 | uint offset, ulong *valuep, | |
47 | enum pci_size_t size) | |
48 | { | |
49 | struct fsl_pcie *pcie = dev_get_priv(bus); | |
50 | ccsr_fsl_pci_t *regs = pcie->regs; | |
51 | u32 val; | |
52 | ||
53 | if (fsl_pcie_addr_valid(pcie, bdf)) { | |
54 | *valuep = pci_get_ff(size); | |
55 | return 0; | |
56 | } | |
57 | ||
58 | bdf = bdf - PCI_BDF(bus->seq, 0, 0); | |
59 | val = bdf | (offset & 0xfc) | ((offset & 0xf00) << 16) | 0x80000000; | |
60 | out_be32(®s->cfg_addr, val); | |
61 | ||
62 | sync(); | |
63 | ||
64 | switch (size) { | |
65 | case PCI_SIZE_8: | |
66 | *valuep = in_8((u8 *)®s->cfg_data + (offset & 3)); | |
67 | break; | |
68 | case PCI_SIZE_16: | |
69 | *valuep = in_le16((u16 *)((u8 *)®s->cfg_data + | |
70 | (offset & 2))); | |
71 | break; | |
72 | case PCI_SIZE_32: | |
73 | *valuep = in_le32(®s->cfg_data); | |
74 | break; | |
75 | } | |
76 | ||
77 | return 0; | |
78 | } | |
79 | ||
80 | static int fsl_pcie_write_config(struct udevice *bus, pci_dev_t bdf, | |
81 | uint offset, ulong value, | |
82 | enum pci_size_t size) | |
83 | { | |
84 | struct fsl_pcie *pcie = dev_get_priv(bus); | |
85 | ccsr_fsl_pci_t *regs = pcie->regs; | |
86 | u32 val; | |
87 | u8 val_8; | |
88 | u16 val_16; | |
89 | u32 val_32; | |
90 | ||
91 | if (fsl_pcie_addr_valid(pcie, bdf)) | |
92 | return 0; | |
93 | ||
94 | bdf = bdf - PCI_BDF(bus->seq, 0, 0); | |
95 | val = bdf | (offset & 0xfc) | ((offset & 0xf00) << 16) | 0x80000000; | |
96 | out_be32(®s->cfg_addr, val); | |
97 | ||
98 | sync(); | |
99 | ||
100 | switch (size) { | |
101 | case PCI_SIZE_8: | |
102 | val_8 = value; | |
103 | out_8((u8 *)®s->cfg_data + (offset & 3), val_8); | |
104 | break; | |
105 | case PCI_SIZE_16: | |
106 | val_16 = value; | |
107 | out_le16((u16 *)((u8 *)®s->cfg_data + (offset & 2)), val_16); | |
108 | break; | |
109 | case PCI_SIZE_32: | |
110 | val_32 = value; | |
111 | out_le32(®s->cfg_data, val_32); | |
112 | break; | |
113 | } | |
114 | ||
115 | return 0; | |
116 | } | |
117 | ||
118 | static int fsl_pcie_hose_read_config(struct fsl_pcie *pcie, uint offset, | |
119 | ulong *valuep, enum pci_size_t size) | |
120 | { | |
121 | int ret; | |
122 | struct udevice *bus = pcie->bus; | |
123 | ||
124 | ret = fsl_pcie_read_config(bus, PCI_BDF(bus->seq, 0, 0), | |
125 | offset, valuep, size); | |
126 | ||
127 | return ret; | |
128 | } | |
129 | ||
130 | static int fsl_pcie_hose_write_config(struct fsl_pcie *pcie, uint offset, | |
131 | ulong value, enum pci_size_t size) | |
132 | { | |
133 | struct udevice *bus = pcie->bus; | |
134 | ||
135 | return fsl_pcie_write_config(bus, PCI_BDF(bus->seq, 0, 0), | |
136 | offset, value, size); | |
137 | } | |
138 | ||
139 | static int fsl_pcie_hose_read_config_byte(struct fsl_pcie *pcie, uint offset, | |
140 | u8 *valuep) | |
141 | { | |
142 | ulong val; | |
143 | int ret; | |
144 | ||
145 | ret = fsl_pcie_hose_read_config(pcie, offset, &val, PCI_SIZE_8); | |
146 | *valuep = val; | |
147 | ||
148 | return ret; | |
149 | } | |
150 | ||
151 | static int fsl_pcie_hose_read_config_word(struct fsl_pcie *pcie, uint offset, | |
152 | u16 *valuep) | |
153 | { | |
154 | ulong val; | |
155 | int ret; | |
156 | ||
157 | ret = fsl_pcie_hose_read_config(pcie, offset, &val, PCI_SIZE_16); | |
158 | *valuep = val; | |
159 | ||
160 | return ret; | |
161 | } | |
162 | ||
163 | static int fsl_pcie_hose_read_config_dword(struct fsl_pcie *pcie, uint offset, | |
164 | u32 *valuep) | |
165 | { | |
166 | ulong val; | |
167 | int ret; | |
168 | ||
169 | ret = fsl_pcie_hose_read_config(pcie, offset, &val, PCI_SIZE_32); | |
170 | *valuep = val; | |
171 | ||
172 | return ret; | |
173 | } | |
174 | ||
175 | static int fsl_pcie_hose_write_config_byte(struct fsl_pcie *pcie, uint offset, | |
176 | u8 value) | |
177 | { | |
178 | return fsl_pcie_hose_write_config(pcie, offset, value, PCI_SIZE_8); | |
179 | } | |
180 | ||
181 | static int fsl_pcie_hose_write_config_word(struct fsl_pcie *pcie, uint offset, | |
182 | u16 value) | |
183 | { | |
184 | return fsl_pcie_hose_write_config(pcie, offset, value, PCI_SIZE_16); | |
185 | } | |
186 | ||
187 | static int fsl_pcie_hose_write_config_dword(struct fsl_pcie *pcie, uint offset, | |
188 | u32 value) | |
189 | { | |
190 | return fsl_pcie_hose_write_config(pcie, offset, value, PCI_SIZE_32); | |
191 | } | |
192 | ||
193 | static int fsl_pcie_link_up(struct fsl_pcie *pcie) | |
194 | { | |
195 | ccsr_fsl_pci_t *regs = pcie->regs; | |
196 | u16 ltssm; | |
197 | ||
198 | if (pcie->block_rev >= PEX_IP_BLK_REV_3_0) { | |
199 | ltssm = (in_be32(®s->pex_csr0) | |
200 | & PEX_CSR0_LTSSM_MASK) >> PEX_CSR0_LTSSM_SHIFT; | |
201 | return ltssm == LTSSM_L0_REV3; | |
202 | } | |
203 | ||
204 | fsl_pcie_hose_read_config_word(pcie, PCI_LTSSM, <ssm); | |
205 | ||
206 | return ltssm == LTSSM_L0; | |
207 | } | |
208 | ||
209 | static bool fsl_pcie_is_agent(struct fsl_pcie *pcie) | |
210 | { | |
211 | u8 header_type; | |
212 | ||
213 | fsl_pcie_hose_read_config_byte(pcie, PCI_HEADER_TYPE, &header_type); | |
214 | ||
215 | return (header_type & 0x7f) == PCI_HEADER_TYPE_NORMAL; | |
216 | } | |
217 | ||
218 | static int fsl_pcie_setup_law(struct fsl_pcie *pcie) | |
219 | { | |
220 | struct pci_region *io, *mem, *pref; | |
221 | ||
222 | pci_get_regions(pcie->bus, &io, &mem, &pref); | |
223 | ||
224 | if (mem) | |
225 | set_next_law(mem->phys_start, | |
226 | law_size_bits(mem->size), | |
227 | pcie->law_trgt_if); | |
228 | ||
229 | if (io) | |
230 | set_next_law(io->phys_start, | |
231 | law_size_bits(io->size), | |
232 | pcie->law_trgt_if); | |
233 | ||
234 | return 0; | |
235 | } | |
236 | ||
237 | static void fsl_pcie_config_ready(struct fsl_pcie *pcie) | |
238 | { | |
239 | ccsr_fsl_pci_t *regs = pcie->regs; | |
240 | ||
241 | if (pcie->block_rev >= PEX_IP_BLK_REV_3_0) { | |
242 | setbits_be32(®s->config, FSL_PCIE_V3_CFG_RDY); | |
243 | return; | |
244 | } | |
245 | ||
246 | fsl_pcie_hose_write_config_byte(pcie, FSL_PCIE_CFG_RDY, 0x1); | |
247 | } | |
248 | ||
249 | static int fsl_pcie_setup_outbound_win(struct fsl_pcie *pcie, int idx, | |
250 | int type, u64 phys, u64 bus_addr, | |
251 | pci_size_t size) | |
252 | { | |
253 | ccsr_fsl_pci_t *regs = pcie->regs; | |
254 | pot_t *po = ®s->pot[idx]; | |
255 | u32 war, sz; | |
256 | ||
257 | if (idx < 0) | |
258 | return -EINVAL; | |
259 | ||
260 | out_be32(&po->powbar, phys >> 12); | |
261 | out_be32(&po->potar, bus_addr >> 12); | |
262 | #ifdef CONFIG_SYS_PCI_64BIT | |
263 | out_be32(&po->potear, bus_addr >> 44); | |
264 | #else | |
265 | out_be32(&po->potear, 0); | |
266 | #endif | |
267 | ||
268 | sz = (__ilog2_u64((u64)size) - 1); | |
269 | war = POWAR_EN | sz; | |
270 | ||
271 | if (type == PCI_REGION_IO) | |
272 | war |= POWAR_IO_READ | POWAR_IO_WRITE; | |
273 | else | |
274 | war |= POWAR_MEM_READ | POWAR_MEM_WRITE; | |
275 | ||
276 | out_be32(&po->powar, war); | |
277 | ||
278 | return 0; | |
279 | } | |
280 | ||
281 | static int fsl_pcie_setup_inbound_win(struct fsl_pcie *pcie, int idx, | |
282 | bool pf, u64 phys, u64 bus_addr, | |
283 | pci_size_t size) | |
284 | { | |
285 | ccsr_fsl_pci_t *regs = pcie->regs; | |
286 | pit_t *pi = ®s->pit[idx]; | |
287 | u32 sz = (__ilog2_u64(size) - 1); | |
288 | u32 flag = PIWAR_LOCAL; | |
289 | ||
290 | if (idx < 0) | |
291 | return -EINVAL; | |
292 | ||
293 | out_be32(&pi->pitar, phys >> 12); | |
294 | out_be32(&pi->piwbar, bus_addr >> 12); | |
295 | ||
296 | #ifdef CONFIG_SYS_PCI_64BIT | |
297 | out_be32(&pi->piwbear, bus_addr >> 44); | |
298 | #else | |
299 | out_be32(&pi->piwbear, 0); | |
300 | #endif | |
301 | ||
302 | if (IS_ENABLED(CONFIG_SYS_FSL_ERRATUM_A005434)) | |
303 | flag = 0; | |
304 | ||
305 | flag |= PIWAR_EN | PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP; | |
306 | if (pf) | |
307 | flag |= PIWAR_PF; | |
308 | out_be32(&pi->piwar, flag | sz); | |
309 | ||
310 | return 0; | |
311 | } | |
312 | ||
313 | static int fsl_pcie_setup_outbound_wins(struct fsl_pcie *pcie) | |
314 | { | |
315 | struct pci_region *io, *mem, *pref; | |
316 | int idx = 1; /* skip 0 */ | |
317 | ||
318 | pci_get_regions(pcie->bus, &io, &mem, &pref); | |
319 | ||
320 | if (io) | |
321 | /* ATU : OUTBOUND : IO */ | |
322 | fsl_pcie_setup_outbound_win(pcie, idx++, | |
323 | PCI_REGION_IO, | |
324 | io->phys_start, | |
325 | io->bus_start, | |
326 | io->size); | |
327 | ||
328 | if (mem) | |
329 | /* ATU : OUTBOUND : MEM */ | |
330 | fsl_pcie_setup_outbound_win(pcie, idx++, | |
331 | PCI_REGION_MEM, | |
332 | mem->phys_start, | |
333 | mem->bus_start, | |
334 | mem->size); | |
335 | return 0; | |
336 | } | |
337 | ||
338 | static int fsl_pcie_setup_inbound_wins(struct fsl_pcie *pcie) | |
339 | { | |
340 | phys_addr_t phys_start = CONFIG_SYS_PCI_MEMORY_PHYS; | |
341 | pci_addr_t bus_start = CONFIG_SYS_PCI_MEMORY_BUS; | |
342 | u64 sz = min((u64)gd->ram_size, (1ull << 32)); | |
343 | pci_size_t pci_sz; | |
344 | int idx; | |
345 | ||
346 | if (pcie->block_rev >= PEX_IP_BLK_REV_2_2) | |
347 | idx = 2; | |
348 | else | |
349 | idx = 3; | |
350 | ||
351 | pci_sz = 1ull << __ilog2_u64(sz); | |
352 | ||
353 | dev_dbg(pcie->bus, "R0 bus_start: %llx phys_start: %llx size: %llx\n", | |
354 | (u64)bus_start, (u64)phys_start, (u64)sz); | |
355 | ||
356 | /* if we aren't an exact power of two match, pci_sz is smaller | |
357 | * round it up to the next power of two. We report the actual | |
358 | * size to pci region tracking. | |
359 | */ | |
360 | if (pci_sz != sz) | |
361 | sz = 2ull << __ilog2_u64(sz); | |
362 | ||
363 | fsl_pcie_setup_inbound_win(pcie, idx--, true, | |
364 | CONFIG_SYS_PCI_MEMORY_PHYS, | |
365 | CONFIG_SYS_PCI_MEMORY_BUS, sz); | |
366 | #if defined(CONFIG_PHYS_64BIT) && defined(CONFIG_SYS_PCI_64BIT) | |
367 | /* | |
368 | * On 64-bit capable systems, set up a mapping for all of DRAM | |
369 | * in high pci address space. | |
370 | */ | |
371 | pci_sz = 1ull << __ilog2_u64(gd->ram_size); | |
372 | /* round up to the next largest power of two */ | |
373 | if (gd->ram_size > pci_sz) | |
374 | pci_sz = 1ull << (__ilog2_u64(gd->ram_size) + 1); | |
375 | ||
376 | dev_dbg(pcie->bus, "R64 bus_start: %llx phys_start: %llx size: %llx\n", | |
377 | (u64)CONFIG_SYS_PCI64_MEMORY_BUS, | |
378 | (u64)CONFIG_SYS_PCI_MEMORY_PHYS, (u64)pci_sz); | |
379 | ||
380 | fsl_pcie_setup_inbound_win(pcie, idx--, true, | |
381 | CONFIG_SYS_PCI_MEMORY_PHYS, | |
382 | CONFIG_SYS_PCI64_MEMORY_BUS, pci_sz); | |
383 | #endif | |
384 | ||
385 | return 0; | |
386 | } | |
387 | ||
388 | static int fsl_pcie_init_atmu(struct fsl_pcie *pcie) | |
389 | { | |
390 | fsl_pcie_setup_outbound_wins(pcie); | |
391 | fsl_pcie_setup_inbound_wins(pcie); | |
392 | ||
393 | return 0; | |
394 | } | |
395 | ||
396 | static int fsl_pcie_init_port(struct fsl_pcie *pcie) | |
397 | { | |
398 | ccsr_fsl_pci_t *regs = pcie->regs; | |
399 | u32 val_32; | |
400 | u16 val_16; | |
401 | ||
402 | fsl_pcie_init_atmu(pcie); | |
403 | ||
404 | if (IS_ENABLED(CONFIG_FSL_PCIE_DISABLE_ASPM)) { | |
405 | val_32 = 0; | |
406 | fsl_pcie_hose_read_config_dword(pcie, PCI_LCR, &val_32); | |
407 | val_32 &= ~0x03; | |
408 | fsl_pcie_hose_write_config_dword(pcie, PCI_LCR, val_32); | |
409 | udelay(1); | |
410 | } | |
411 | ||
412 | if (IS_ENABLED(CONFIG_FSL_PCIE_RESET)) { | |
413 | u16 ltssm; | |
414 | int i; | |
415 | ||
416 | if (pcie->block_rev >= PEX_IP_BLK_REV_3_0) { | |
417 | /* assert PCIe reset */ | |
418 | setbits_be32(®s->pdb_stat, 0x08000000); | |
419 | (void)in_be32(®s->pdb_stat); | |
420 | udelay(1000); | |
421 | /* clear PCIe reset */ | |
422 | clrbits_be32(®s->pdb_stat, 0x08000000); | |
423 | asm("sync;isync"); | |
424 | for (i = 0; i < 100 && !fsl_pcie_link_up(pcie); i++) | |
425 | udelay(1000); | |
426 | } else { | |
427 | fsl_pcie_hose_read_config_word(pcie, PCI_LTSSM, <ssm); | |
428 | if (ltssm == 1) { | |
429 | /* assert PCIe reset */ | |
430 | setbits_be32(®s->pdb_stat, 0x08000000); | |
431 | (void)in_be32(®s->pdb_stat); | |
432 | udelay(100); | |
433 | /* clear PCIe reset */ | |
434 | clrbits_be32(®s->pdb_stat, 0x08000000); | |
435 | asm("sync;isync"); | |
436 | for (i = 0; i < 100 && | |
437 | !fsl_pcie_link_up(pcie); i++) | |
438 | udelay(1000); | |
439 | } | |
440 | } | |
441 | } | |
442 | ||
443 | if (IS_ENABLED(CONFIG_SYS_P4080_ERRATUM_PCIE_A003) && | |
444 | !fsl_pcie_link_up(pcie)) { | |
445 | serdes_corenet_t *srds_regs; | |
446 | ||
447 | srds_regs = (void *)CONFIG_SYS_FSL_CORENET_SERDES_ADDR; | |
448 | val_32 = in_be32(&srds_regs->srdspccr0); | |
449 | ||
450 | if ((val_32 >> 28) == 3) { | |
451 | int i; | |
452 | ||
453 | out_be32(&srds_regs->srdspccr0, 2 << 28); | |
454 | setbits_be32(®s->pdb_stat, 0x08000000); | |
455 | in_be32(®s->pdb_stat); | |
456 | udelay(100); | |
457 | clrbits_be32(®s->pdb_stat, 0x08000000); | |
458 | asm("sync;isync"); | |
459 | for (i = 0; i < 100 && !fsl_pcie_link_up(pcie); i++) | |
460 | udelay(1000); | |
461 | } | |
462 | } | |
463 | ||
464 | /* | |
465 | * The Read-Only Write Enable bit defaults to 1 instead of 0. | |
466 | * Set to 0 to protect the read-only registers. | |
467 | */ | |
468 | if (IS_ENABLED(CONFIG_SYS_FSL_ERRATUM_A007815)) | |
469 | clrbits_be32(®s->dbi_ro_wr_en, 0x01); | |
470 | ||
471 | /* | |
472 | * Enable All Error Interrupts except | |
473 | * - Master abort (pci) | |
474 | * - Master PERR (pci) | |
475 | * - ICCA (PCIe) | |
476 | */ | |
477 | out_be32(®s->peer, ~0x20140); | |
478 | ||
479 | /* set URR, FER, NFER (but not CER) */ | |
480 | fsl_pcie_hose_read_config_dword(pcie, PCI_DCR, &val_32); | |
481 | val_32 |= 0xf000e; | |
482 | fsl_pcie_hose_write_config_dword(pcie, PCI_DCR, val_32); | |
483 | ||
484 | /* Clear all error indications */ | |
485 | out_be32(®s->pme_msg_det, 0xffffffff); | |
486 | out_be32(®s->pme_msg_int_en, 0xffffffff); | |
487 | out_be32(®s->pedr, 0xffffffff); | |
488 | ||
489 | fsl_pcie_hose_read_config_word(pcie, PCI_DSR, &val_16); | |
490 | if (val_16) | |
491 | fsl_pcie_hose_write_config_word(pcie, PCI_DSR, 0xffff); | |
492 | ||
493 | fsl_pcie_hose_read_config_word(pcie, PCI_SEC_STATUS, &val_16); | |
494 | if (val_16) | |
495 | fsl_pcie_hose_write_config_word(pcie, PCI_SEC_STATUS, 0xffff); | |
496 | ||
497 | return 0; | |
498 | } | |
499 | ||
500 | static int fsl_pcie_fixup_classcode(struct fsl_pcie *pcie) | |
501 | { | |
502 | ccsr_fsl_pci_t *regs = pcie->regs; | |
503 | u32 val; | |
504 | ||
505 | setbits_be32(®s->dbi_ro_wr_en, 0x01); | |
506 | fsl_pcie_hose_read_config_dword(pcie, PCI_CLASS_REVISION, &val); | |
507 | val &= 0xff; | |
508 | val |= PCI_CLASS_BRIDGE_PCI << 16; | |
509 | fsl_pcie_hose_write_config_dword(pcie, PCI_CLASS_REVISION, val); | |
510 | clrbits_be32(®s->dbi_ro_wr_en, 0x01); | |
511 | ||
512 | return 0; | |
513 | } | |
514 | ||
515 | static int fsl_pcie_init_rc(struct fsl_pcie *pcie) | |
516 | { | |
517 | return fsl_pcie_fixup_classcode(pcie); | |
518 | } | |
519 | ||
520 | static int fsl_pcie_init_ep(struct fsl_pcie *pcie) | |
521 | { | |
522 | fsl_pcie_config_ready(pcie); | |
523 | ||
524 | return 0; | |
525 | } | |
526 | ||
527 | static int fsl_pcie_probe(struct udevice *dev) | |
528 | { | |
529 | struct fsl_pcie *pcie = dev_get_priv(dev); | |
530 | ccsr_fsl_pci_t *regs = pcie->regs; | |
531 | u16 val_16; | |
532 | ||
533 | pcie->bus = dev; | |
534 | pcie->block_rev = in_be32(®s->block_rev1); | |
535 | ||
536 | list_add(&pcie->list, &fsl_pcie_list); | |
537 | pcie->enabled = is_serdes_configured(PCIE1 + pcie->idx); | |
538 | if (!pcie->enabled) { | |
539 | printf("PCIe%d: %s disabled\n", pcie->idx, dev->name); | |
540 | return 0; | |
541 | } | |
542 | ||
543 | fsl_pcie_setup_law(pcie); | |
544 | ||
545 | pcie->mode = fsl_pcie_is_agent(pcie); | |
546 | ||
547 | fsl_pcie_init_port(pcie); | |
548 | ||
549 | printf("PCIe%d: %s ", pcie->idx, dev->name); | |
550 | ||
551 | if (pcie->mode) { | |
552 | printf("Endpoint"); | |
553 | fsl_pcie_init_ep(pcie); | |
554 | } else { | |
555 | printf("Root Complex"); | |
556 | fsl_pcie_init_rc(pcie); | |
557 | } | |
558 | ||
559 | if (!fsl_pcie_link_up(pcie)) { | |
560 | printf(": %s\n", pcie->mode ? "undetermined link" : "no link"); | |
561 | return 0; | |
562 | } | |
563 | ||
564 | fsl_pcie_hose_read_config_word(pcie, PCI_LSR, &val_16); | |
565 | printf(": x%d gen%d\n", (val_16 & 0x3f0) >> 4, (val_16 & 0xf)); | |
566 | ||
567 | return 0; | |
568 | } | |
569 | ||
570 | static int fsl_pcie_ofdata_to_platdata(struct udevice *dev) | |
571 | { | |
572 | struct fsl_pcie *pcie = dev_get_priv(dev); | |
573 | int ret; | |
574 | ||
575 | pcie->regs = dev_remap_addr(dev); | |
576 | if (!pcie->regs) { | |
577 | pr_err("\"reg\" resource not found\n"); | |
578 | return -EINVAL; | |
579 | } | |
580 | ||
581 | ret = dev_read_u32(dev, "law_trgt_if", &pcie->law_trgt_if); | |
582 | if (ret < 0) { | |
583 | pr_err("\"law_trgt_if\" not found\n"); | |
584 | return ret; | |
585 | } | |
586 | ||
587 | pcie->idx = (dev_read_addr(dev) - 0xffe240000) / 0x10000; | |
588 | ||
589 | return 0; | |
590 | } | |
591 | ||
592 | static const struct dm_pci_ops fsl_pcie_ops = { | |
593 | .read_config = fsl_pcie_read_config, | |
594 | .write_config = fsl_pcie_write_config, | |
595 | }; | |
596 | ||
597 | static const struct udevice_id fsl_pcie_ids[] = { | |
598 | { .compatible = "fsl,pcie-t2080" }, | |
599 | { } | |
600 | }; | |
601 | ||
602 | U_BOOT_DRIVER(fsl_pcie) = { | |
603 | .name = "fsl_pcie", | |
604 | .id = UCLASS_PCI, | |
605 | .of_match = fsl_pcie_ids, | |
606 | .ops = &fsl_pcie_ops, | |
607 | .ofdata_to_platdata = fsl_pcie_ofdata_to_platdata, | |
608 | .probe = fsl_pcie_probe, | |
609 | .priv_auto_alloc_size = sizeof(struct fsl_pcie), | |
610 | }; |