Commit | Line | Data |
---|---|---|
b809b3e8 | 1 | /* |
5b70a097 | 2 | * MPC83xx/85xx/86xx PCI/PCIE support routing. |
b809b3e8 | 3 | * |
598804cd AV |
4 | * Copyright 2007-2009 Freescale Semiconductor, Inc. |
5 | * Copyright 2008-2009 MontaVista Software, Inc. | |
b809b3e8 | 6 | * |
9ac4dd30 ZR |
7 | * Initial author: Xianghua Xiao <x.xiao@freescale.com> |
8 | * Recode: ZHANG WEI <wei.zhang@freescale.com> | |
9 | * Rewrite the routing for Frescale PCI and PCI Express | |
10 | * Roy Zang <tie-fei.zang@freescale.com> | |
598804cd AV |
11 | * MPC83xx PCI-Express support: |
12 | * Tony Li <tony.li@freescale.com> | |
13 | * Anton Vorontsov <avorontsov@ru.mvista.com> | |
b809b3e8 JL |
14 | * |
15 | * This program is free software; you can redistribute it and/or modify it | |
16 | * under the terms of the GNU General Public License as published by the | |
17 | * Free Software Foundation; either version 2 of the License, or (at your | |
18 | * option) any later version. | |
19 | */ | |
9ac4dd30 | 20 | #include <linux/kernel.h> |
b809b3e8 | 21 | #include <linux/pci.h> |
9ac4dd30 ZR |
22 | #include <linux/delay.h> |
23 | #include <linux/string.h> | |
24 | #include <linux/init.h> | |
25 | #include <linux/bootmem.h> | |
54c18193 KG |
26 | #include <linux/lmb.h> |
27 | #include <linux/log2.h> | |
5a0e3ad6 | 28 | #include <linux/slab.h> |
b809b3e8 | 29 | |
b809b3e8 JL |
30 | #include <asm/io.h> |
31 | #include <asm/prom.h> | |
b809b3e8 | 32 | #include <asm/pci-bridge.h> |
9ac4dd30 | 33 | #include <asm/machdep.h> |
b809b3e8 | 34 | #include <sysdev/fsl_soc.h> |
55c44991 | 35 | #include <sysdev/fsl_pci.h> |
b809b3e8 | 36 | |
598804cd AV |
37 | static int fsl_pcie_bus_fixup; |
38 | ||
39 | static void __init quirk_fsl_pcie_header(struct pci_dev *dev) | |
40 | { | |
41 | /* if we aren't a PCIe don't bother */ | |
42 | if (!pci_find_capability(dev, PCI_CAP_ID_EXP)) | |
43 | return; | |
44 | ||
45 | dev->class = PCI_CLASS_BRIDGE_PCI << 8; | |
46 | fsl_pcie_bus_fixup = 1; | |
47 | return; | |
48 | } | |
49 | ||
50 | static int __init fsl_pcie_check_link(struct pci_controller *hose) | |
51 | { | |
52 | u32 val; | |
53 | ||
54 | early_read_config_dword(hose, 0, 0, PCIE_LTSSM, &val); | |
55 | if (val < PCIE_LTSSM_L0) | |
56 | return 1; | |
57 | return 0; | |
58 | } | |
59 | ||
5753c082 | 60 | #if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx) |
a097a78c TP |
61 | static int __init setup_one_atmu(struct ccsr_pci __iomem *pci, |
62 | unsigned int index, const struct resource *res, | |
63 | resource_size_t offset) | |
64 | { | |
65 | resource_size_t pci_addr = res->start - offset; | |
66 | resource_size_t phys_addr = res->start; | |
67 | resource_size_t size = res->end - res->start + 1; | |
68 | u32 flags = 0x80044000; /* enable & mem R/W */ | |
69 | unsigned int i; | |
70 | ||
71 | pr_debug("PCI MEM resource start 0x%016llx, size 0x%016llx.\n", | |
72 | (u64)res->start, (u64)size); | |
73 | ||
565f3764 TP |
74 | if (res->flags & IORESOURCE_PREFETCH) |
75 | flags |= 0x10000000; /* enable relaxed ordering */ | |
76 | ||
a097a78c TP |
77 | for (i = 0; size > 0; i++) { |
78 | unsigned int bits = min(__ilog2(size), | |
79 | __ffs(pci_addr | phys_addr)); | |
80 | ||
81 | if (index + i >= 5) | |
82 | return -1; | |
83 | ||
84 | out_be32(&pci->pow[index + i].potar, pci_addr >> 12); | |
85 | out_be32(&pci->pow[index + i].potear, (u64)pci_addr >> 44); | |
86 | out_be32(&pci->pow[index + i].powbar, phys_addr >> 12); | |
87 | out_be32(&pci->pow[index + i].powar, flags | (bits - 1)); | |
88 | ||
89 | pci_addr += (resource_size_t)1U << bits; | |
90 | phys_addr += (resource_size_t)1U << bits; | |
91 | size -= (resource_size_t)1U << bits; | |
92 | } | |
93 | ||
94 | return i; | |
95 | } | |
96 | ||
9ac4dd30 | 97 | /* atmu setup for fsl pci/pcie controller */ |
c9dadffb AV |
98 | static void __init setup_pci_atmu(struct pci_controller *hose, |
99 | struct resource *rsrc) | |
b809b3e8 | 100 | { |
9ac4dd30 | 101 | struct ccsr_pci __iomem *pci; |
54c18193 KG |
102 | int i, j, n, mem_log, win_idx = 2; |
103 | u64 mem, sz, paddr_hi = 0; | |
104 | u64 paddr_lo = ULLONG_MAX; | |
105 | u32 pcicsrbar = 0, pcicsrbar_sz; | |
106 | u32 piwar = PIWAR_EN | PIWAR_PF | PIWAR_TGI_LOCAL | | |
107 | PIWAR_READ_SNOOP | PIWAR_WRITE_SNOOP; | |
108 | char *name = hose->dn->full_name; | |
b809b3e8 | 109 | |
72b122cc KG |
110 | pr_debug("PCI memory map start 0x%016llx, size 0x%016llx\n", |
111 | (u64)rsrc->start, (u64)rsrc->end - (u64)rsrc->start + 1); | |
9ac4dd30 | 112 | pci = ioremap(rsrc->start, rsrc->end - rsrc->start + 1); |
a097a78c TP |
113 | if (!pci) { |
114 | dev_err(hose->parent, "Unable to map ATMU registers\n"); | |
115 | return; | |
116 | } | |
9ac4dd30 | 117 | |
a097a78c | 118 | /* Disable all windows (except powar0 since it's ignored) */ |
9ac4dd30 ZR |
119 | for(i = 1; i < 5; i++) |
120 | out_be32(&pci->pow[i].powar, 0); | |
121 | for(i = 0; i < 3; i++) | |
122 | out_be32(&pci->piw[i].piwar, 0); | |
123 | ||
124 | /* Setup outbound MEM window */ | |
a097a78c TP |
125 | for(i = 0, j = 1; i < 3; i++) { |
126 | if (!(hose->mem_resources[i].flags & IORESOURCE_MEM)) | |
127 | continue; | |
128 | ||
54c18193 KG |
129 | paddr_lo = min(paddr_lo, (u64)hose->mem_resources[i].start); |
130 | paddr_hi = max(paddr_hi, (u64)hose->mem_resources[i].end); | |
131 | ||
a097a78c TP |
132 | n = setup_one_atmu(pci, j, &hose->mem_resources[i], |
133 | hose->pci_mem_offset); | |
134 | ||
135 | if (n < 0 || j >= 5) { | |
136 | pr_err("Ran out of outbound PCI ATMUs for resource %d!\n", i); | |
137 | hose->mem_resources[i].flags |= IORESOURCE_DISABLED; | |
138 | } else | |
139 | j += n; | |
140 | } | |
9ac4dd30 ZR |
141 | |
142 | /* Setup outbound IO window */ | |
a097a78c TP |
143 | if (hose->io_resource.flags & IORESOURCE_IO) { |
144 | if (j >= 5) { | |
145 | pr_err("Ran out of outbound PCI ATMUs for IO resource\n"); | |
146 | } else { | |
147 | pr_debug("PCI IO resource start 0x%016llx, size 0x%016llx, " | |
148 | "phy base 0x%016llx.\n", | |
149 | (u64)hose->io_resource.start, | |
150 | (u64)hose->io_resource.end - (u64)hose->io_resource.start + 1, | |
151 | (u64)hose->io_base_phys); | |
152 | out_be32(&pci->pow[j].potar, (hose->io_resource.start >> 12)); | |
153 | out_be32(&pci->pow[j].potear, 0); | |
154 | out_be32(&pci->pow[j].powbar, (hose->io_base_phys >> 12)); | |
155 | /* Enable, IO R/W */ | |
156 | out_be32(&pci->pow[j].powar, 0x80088000 | |
157 | | (__ilog2(hose->io_resource.end | |
158 | - hose->io_resource.start + 1) - 1)); | |
159 | } | |
9ac4dd30 ZR |
160 | } |
161 | ||
54c18193 KG |
162 | /* convert to pci address space */ |
163 | paddr_hi -= hose->pci_mem_offset; | |
164 | paddr_lo -= hose->pci_mem_offset; | |
165 | ||
166 | if (paddr_hi == paddr_lo) { | |
167 | pr_err("%s: No outbound window space\n", name); | |
168 | return ; | |
169 | } | |
170 | ||
171 | if (paddr_lo == 0) { | |
172 | pr_err("%s: No space for inbound window\n", name); | |
173 | return ; | |
174 | } | |
175 | ||
176 | /* setup PCSRBAR/PEXCSRBAR */ | |
177 | early_write_config_dword(hose, 0, 0, PCI_BASE_ADDRESS_0, 0xffffffff); | |
178 | early_read_config_dword(hose, 0, 0, PCI_BASE_ADDRESS_0, &pcicsrbar_sz); | |
179 | pcicsrbar_sz = ~pcicsrbar_sz + 1; | |
180 | ||
181 | if (paddr_hi < (0x100000000ull - pcicsrbar_sz) || | |
182 | (paddr_lo > 0x100000000ull)) | |
183 | pcicsrbar = 0x100000000ull - pcicsrbar_sz; | |
184 | else | |
185 | pcicsrbar = (paddr_lo - pcicsrbar_sz) & -pcicsrbar_sz; | |
186 | early_write_config_dword(hose, 0, 0, PCI_BASE_ADDRESS_0, pcicsrbar); | |
187 | ||
188 | paddr_lo = min(paddr_lo, (u64)pcicsrbar); | |
189 | ||
190 | pr_info("%s: PCICSRBAR @ 0x%x\n", name, pcicsrbar); | |
191 | ||
192 | /* Setup inbound mem window */ | |
193 | mem = lmb_end_of_DRAM(); | |
194 | sz = min(mem, paddr_lo); | |
195 | mem_log = __ilog2_u64(sz); | |
196 | ||
197 | /* PCIe can overmap inbound & outbound since RX & TX are separated */ | |
198 | if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) { | |
199 | /* Size window to exact size if power-of-two or one size up */ | |
200 | if ((1ull << mem_log) != mem) { | |
201 | if ((1ull << mem_log) > mem) | |
202 | pr_info("%s: Setting PCI inbound window " | |
203 | "greater than memory size\n", name); | |
204 | mem_log++; | |
205 | } | |
206 | ||
207 | piwar |= (mem_log - 1); | |
208 | ||
209 | /* Setup inbound memory window */ | |
210 | out_be32(&pci->piw[win_idx].pitar, 0x00000000); | |
211 | out_be32(&pci->piw[win_idx].piwbar, 0x00000000); | |
212 | out_be32(&pci->piw[win_idx].piwar, piwar); | |
213 | win_idx--; | |
214 | ||
215 | hose->dma_window_base_cur = 0x00000000; | |
216 | hose->dma_window_size = (resource_size_t)sz; | |
217 | } else { | |
218 | u64 paddr = 0; | |
219 | ||
220 | /* Setup inbound memory window */ | |
221 | out_be32(&pci->piw[win_idx].pitar, paddr >> 12); | |
222 | out_be32(&pci->piw[win_idx].piwbar, paddr >> 12); | |
223 | out_be32(&pci->piw[win_idx].piwar, (piwar | (mem_log - 1))); | |
224 | win_idx--; | |
225 | ||
226 | paddr += 1ull << mem_log; | |
227 | sz -= 1ull << mem_log; | |
228 | ||
229 | if (sz) { | |
230 | mem_log = __ilog2_u64(sz); | |
231 | piwar |= (mem_log - 1); | |
232 | ||
233 | out_be32(&pci->piw[win_idx].pitar, paddr >> 12); | |
234 | out_be32(&pci->piw[win_idx].piwbar, paddr >> 12); | |
235 | out_be32(&pci->piw[win_idx].piwar, piwar); | |
236 | win_idx--; | |
237 | ||
238 | paddr += 1ull << mem_log; | |
239 | } | |
240 | ||
241 | hose->dma_window_base_cur = 0x00000000; | |
242 | hose->dma_window_size = (resource_size_t)paddr; | |
243 | } | |
a097a78c | 244 | |
54c18193 KG |
245 | if (hose->dma_window_size < mem) { |
246 | #ifndef CONFIG_SWIOTLB | |
247 | pr_err("%s: ERROR: Memory size exceeds PCI ATMU ability to " | |
248 | "map - enable CONFIG_SWIOTLB to avoid dma errors.\n", | |
249 | name); | |
250 | #endif | |
251 | /* adjusting outbound windows could reclaim space in mem map */ | |
252 | if (paddr_hi < 0xffffffffull) | |
253 | pr_warning("%s: WARNING: Outbound window cfg leaves " | |
254 | "gaps in memory map. Adjusting the memory map " | |
255 | "could reduce unnecessary bounce buffering.\n", | |
256 | name); | |
257 | ||
258 | pr_info("%s: DMA window size is 0x%llx\n", name, | |
259 | (u64)hose->dma_window_size); | |
260 | } | |
89d93347 | 261 | |
a097a78c | 262 | iounmap(pci); |
b809b3e8 JL |
263 | } |
264 | ||
c9dadffb | 265 | static void __init setup_pci_cmd(struct pci_controller *hose) |
b809b3e8 | 266 | { |
b809b3e8 | 267 | u16 cmd; |
eb12af43 KG |
268 | int cap_x; |
269 | ||
b809b3e8 JL |
270 | early_read_config_word(hose, 0, 0, PCI_COMMAND, &cmd); |
271 | cmd |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | |
9ac4dd30 | 272 | | PCI_COMMAND_IO; |
b809b3e8 | 273 | early_write_config_word(hose, 0, 0, PCI_COMMAND, cmd); |
eb12af43 KG |
274 | |
275 | cap_x = early_find_capability(hose, 0, 0, PCI_CAP_ID_PCIX); | |
276 | if (cap_x) { | |
277 | int pci_x_cmd = cap_x + PCI_X_CMD; | |
278 | cmd = PCI_X_CMD_MAX_SPLIT | PCI_X_CMD_MAX_READ | |
279 | | PCI_X_CMD_ERO | PCI_X_CMD_DPERR_E; | |
280 | early_write_config_word(hose, 0, 0, pci_x_cmd, cmd); | |
281 | } else { | |
282 | early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0x80); | |
283 | } | |
9ad494f6 KG |
284 | } |
285 | ||
6c0a11c1 KG |
286 | void fsl_pcibios_fixup_bus(struct pci_bus *bus) |
287 | { | |
8206a110 | 288 | struct pci_controller *hose = pci_bus_to_host(bus); |
6c0a11c1 KG |
289 | int i; |
290 | ||
72b122cc KG |
291 | if ((bus->parent == hose->bus) && |
292 | ((fsl_pcie_bus_fixup && | |
293 | early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) || | |
294 | (hose->indirect_type & PPC_INDIRECT_TYPE_NO_PCIE_LINK))) | |
295 | { | |
296 | for (i = 0; i < 4; ++i) { | |
297 | struct resource *res = bus->resource[i]; | |
298 | struct resource *par = bus->parent->resource[i]; | |
299 | if (res) { | |
300 | res->start = 0; | |
301 | res->end = 0; | |
302 | res->flags = 0; | |
303 | } | |
304 | if (res && par) { | |
305 | res->start = par->start; | |
306 | res->end = par->end; | |
307 | res->flags = par->flags; | |
308 | } | |
6c0a11c1 KG |
309 | } |
310 | } | |
311 | } | |
312 | ||
9ac4dd30 | 313 | int __init fsl_add_bridge(struct device_node *dev, int is_primary) |
b809b3e8 JL |
314 | { |
315 | int len; | |
316 | struct pci_controller *hose; | |
317 | struct resource rsrc; | |
8efca493 | 318 | const int *bus_range; |
b809b3e8 | 319 | |
9ac4dd30 | 320 | pr_debug("Adding PCI host bridge %s\n", dev->full_name); |
b809b3e8 JL |
321 | |
322 | /* Fetch host bridge registers address */ | |
9ac4dd30 ZR |
323 | if (of_address_to_resource(dev, 0, &rsrc)) { |
324 | printk(KERN_WARNING "Can't get pci register base!"); | |
325 | return -ENOMEM; | |
326 | } | |
b809b3e8 JL |
327 | |
328 | /* Get bus range if any */ | |
e2eb6392 | 329 | bus_range = of_get_property(dev, "bus-range", &len); |
b809b3e8 JL |
330 | if (bus_range == NULL || len < 2 * sizeof(int)) |
331 | printk(KERN_WARNING "Can't get bus-range for %s, assume" | |
9ac4dd30 | 332 | " bus 0\n", dev->full_name); |
b809b3e8 | 333 | |
7fe519c2 | 334 | ppc_pci_add_flags(PPC_PCI_REASSIGN_ALL_BUS); |
dbf8471f | 335 | hose = pcibios_alloc_controller(dev); |
b809b3e8 JL |
336 | if (!hose) |
337 | return -ENOMEM; | |
dbf8471f | 338 | |
b809b3e8 | 339 | hose->first_busno = bus_range ? bus_range[0] : 0x0; |
bf7c036f | 340 | hose->last_busno = bus_range ? bus_range[1] : 0xff; |
b809b3e8 | 341 | |
2e56ff20 KG |
342 | setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4, |
343 | PPC_INDIRECT_TYPE_BIG_ENDIAN); | |
9ac4dd30 | 344 | setup_pci_cmd(hose); |
b809b3e8 | 345 | |
9ac4dd30 | 346 | /* check PCI express link status */ |
957ecffc | 347 | if (early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP)) { |
7659c038 | 348 | hose->indirect_type |= PPC_INDIRECT_TYPE_EXT_REG | |
957ecffc | 349 | PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS; |
9ac4dd30 | 350 | if (fsl_pcie_check_link(hose)) |
957ecffc KG |
351 | hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK; |
352 | } | |
b809b3e8 | 353 | |
df3c9019 | 354 | printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx. " |
9ac4dd30 ZR |
355 | "Firmware bus number: %d->%d\n", |
356 | (unsigned long long)rsrc.start, hose->first_busno, | |
357 | hose->last_busno); | |
b809b3e8 | 358 | |
9ac4dd30 | 359 | pr_debug(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n", |
b809b3e8 JL |
360 | hose, hose->cfg_addr, hose->cfg_data); |
361 | ||
362 | /* Interpret the "ranges" property */ | |
363 | /* This also maps the I/O region and sets isa_io/mem_base */ | |
9ac4dd30 | 364 | pci_process_bridge_OF_ranges(hose, dev, is_primary); |
b809b3e8 JL |
365 | |
366 | /* Setup PEX window registers */ | |
9ac4dd30 | 367 | setup_pci_atmu(hose, &rsrc); |
b809b3e8 JL |
368 | |
369 | return 0; | |
370 | } | |
9ac4dd30 | 371 | |
72b122cc KG |
372 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8548E, quirk_fsl_pcie_header); |
373 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8548, quirk_fsl_pcie_header); | |
374 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8543E, quirk_fsl_pcie_header); | |
375 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8543, quirk_fsl_pcie_header); | |
376 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8547E, quirk_fsl_pcie_header); | |
377 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8545E, quirk_fsl_pcie_header); | |
378 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8545, quirk_fsl_pcie_header); | |
bfa568d1 AV |
379 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8569E, quirk_fsl_pcie_header); |
380 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8569, quirk_fsl_pcie_header); | |
72b122cc KG |
381 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8568E, quirk_fsl_pcie_header); |
382 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8568, quirk_fsl_pcie_header); | |
383 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8567E, quirk_fsl_pcie_header); | |
384 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8567, quirk_fsl_pcie_header); | |
385 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8533E, quirk_fsl_pcie_header); | |
386 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8533, quirk_fsl_pcie_header); | |
387 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8544E, quirk_fsl_pcie_header); | |
388 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8544, quirk_fsl_pcie_header); | |
389 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8572E, quirk_fsl_pcie_header); | |
390 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8572, quirk_fsl_pcie_header); | |
2f3804ed KG |
391 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8536E, quirk_fsl_pcie_header); |
392 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8536, quirk_fsl_pcie_header); | |
72b122cc KG |
393 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8641, quirk_fsl_pcie_header); |
394 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8641D, quirk_fsl_pcie_header); | |
395 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8610, quirk_fsl_pcie_header); | |
a3f62bd2 KG |
396 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P1011E, quirk_fsl_pcie_header); |
397 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P1011, quirk_fsl_pcie_header); | |
398 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P1013E, quirk_fsl_pcie_header); | |
399 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P1013, quirk_fsl_pcie_header); | |
400 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P1020E, quirk_fsl_pcie_header); | |
401 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P1020, quirk_fsl_pcie_header); | |
402 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P1022E, quirk_fsl_pcie_header); | |
403 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P1022, quirk_fsl_pcie_header); | |
404 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P2010E, quirk_fsl_pcie_header); | |
405 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P2010, quirk_fsl_pcie_header); | |
01af9507 KG |
406 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P2020E, quirk_fsl_pcie_header); |
407 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P2020, quirk_fsl_pcie_header); | |
a3f62bd2 KG |
408 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P4040E, quirk_fsl_pcie_header); |
409 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P4040, quirk_fsl_pcie_header); | |
410 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P4080E, quirk_fsl_pcie_header); | |
411 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_P4080, quirk_fsl_pcie_header); | |
5753c082 | 412 | #endif /* CONFIG_FSL_SOC_BOOKE || CONFIG_PPC_86xx */ |
76fe1ffc | 413 | |
35225802 | 414 | #if defined(CONFIG_PPC_83xx) || defined(CONFIG_PPC_MPC512x) |
598804cd AV |
415 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8314E, quirk_fsl_pcie_header); |
416 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8314, quirk_fsl_pcie_header); | |
417 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8315E, quirk_fsl_pcie_header); | |
418 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8315, quirk_fsl_pcie_header); | |
419 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8377E, quirk_fsl_pcie_header); | |
420 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8377, quirk_fsl_pcie_header); | |
421 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8378E, quirk_fsl_pcie_header); | |
422 | DECLARE_PCI_FIXUP_HEADER(0x1957, PCI_DEVICE_ID_MPC8378, quirk_fsl_pcie_header); | |
423 | ||
424 | struct mpc83xx_pcie_priv { | |
425 | void __iomem *cfg_type0; | |
426 | void __iomem *cfg_type1; | |
427 | u32 dev_base; | |
428 | }; | |
429 | ||
430 | /* | |
431 | * With the convention of u-boot, the PCIE outbound window 0 serves | |
432 | * as configuration transactions outbound. | |
433 | */ | |
434 | #define PEX_OUTWIN0_BAR 0xCA4 | |
435 | #define PEX_OUTWIN0_TAL 0xCA8 | |
436 | #define PEX_OUTWIN0_TAH 0xCAC | |
437 | ||
438 | static int mpc83xx_pcie_exclude_device(struct pci_bus *bus, unsigned int devfn) | |
439 | { | |
8206a110 | 440 | struct pci_controller *hose = pci_bus_to_host(bus); |
598804cd AV |
441 | |
442 | if (hose->indirect_type & PPC_INDIRECT_TYPE_NO_PCIE_LINK) | |
443 | return PCIBIOS_DEVICE_NOT_FOUND; | |
444 | /* | |
445 | * Workaround for the HW bug: for Type 0 configure transactions the | |
446 | * PCI-E controller does not check the device number bits and just | |
447 | * assumes that the device number bits are 0. | |
448 | */ | |
449 | if (bus->number == hose->first_busno || | |
450 | bus->primary == hose->first_busno) { | |
451 | if (devfn & 0xf8) | |
452 | return PCIBIOS_DEVICE_NOT_FOUND; | |
453 | } | |
454 | ||
455 | if (ppc_md.pci_exclude_device) { | |
456 | if (ppc_md.pci_exclude_device(hose, bus->number, devfn)) | |
457 | return PCIBIOS_DEVICE_NOT_FOUND; | |
458 | } | |
459 | ||
460 | return PCIBIOS_SUCCESSFUL; | |
461 | } | |
462 | ||
463 | static void __iomem *mpc83xx_pcie_remap_cfg(struct pci_bus *bus, | |
464 | unsigned int devfn, int offset) | |
465 | { | |
8206a110 | 466 | struct pci_controller *hose = pci_bus_to_host(bus); |
598804cd | 467 | struct mpc83xx_pcie_priv *pcie = hose->dn->data; |
f93611fa | 468 | u32 dev_base = bus->number << 24 | devfn << 16; |
598804cd AV |
469 | int ret; |
470 | ||
471 | ret = mpc83xx_pcie_exclude_device(bus, devfn); | |
472 | if (ret) | |
473 | return NULL; | |
474 | ||
475 | offset &= 0xfff; | |
476 | ||
477 | /* Type 0 */ | |
478 | if (bus->number == hose->first_busno) | |
479 | return pcie->cfg_type0 + offset; | |
480 | ||
481 | if (pcie->dev_base == dev_base) | |
482 | goto mapped; | |
483 | ||
484 | out_le32(pcie->cfg_type0 + PEX_OUTWIN0_TAL, dev_base); | |
485 | ||
486 | pcie->dev_base = dev_base; | |
487 | mapped: | |
488 | return pcie->cfg_type1 + offset; | |
489 | } | |
490 | ||
491 | static int mpc83xx_pcie_read_config(struct pci_bus *bus, unsigned int devfn, | |
492 | int offset, int len, u32 *val) | |
493 | { | |
494 | void __iomem *cfg_addr; | |
495 | ||
496 | cfg_addr = mpc83xx_pcie_remap_cfg(bus, devfn, offset); | |
497 | if (!cfg_addr) | |
498 | return PCIBIOS_DEVICE_NOT_FOUND; | |
499 | ||
500 | switch (len) { | |
501 | case 1: | |
502 | *val = in_8(cfg_addr); | |
503 | break; | |
504 | case 2: | |
505 | *val = in_le16(cfg_addr); | |
506 | break; | |
507 | default: | |
508 | *val = in_le32(cfg_addr); | |
509 | break; | |
510 | } | |
511 | ||
512 | return PCIBIOS_SUCCESSFUL; | |
513 | } | |
514 | ||
515 | static int mpc83xx_pcie_write_config(struct pci_bus *bus, unsigned int devfn, | |
516 | int offset, int len, u32 val) | |
517 | { | |
f93611fa | 518 | struct pci_controller *hose = pci_bus_to_host(bus); |
598804cd AV |
519 | void __iomem *cfg_addr; |
520 | ||
521 | cfg_addr = mpc83xx_pcie_remap_cfg(bus, devfn, offset); | |
522 | if (!cfg_addr) | |
523 | return PCIBIOS_DEVICE_NOT_FOUND; | |
524 | ||
f93611fa AV |
525 | /* PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS */ |
526 | if (offset == PCI_PRIMARY_BUS && bus->number == hose->first_busno) | |
527 | val &= 0xffffff00; | |
528 | ||
598804cd AV |
529 | switch (len) { |
530 | case 1: | |
531 | out_8(cfg_addr, val); | |
532 | break; | |
533 | case 2: | |
534 | out_le16(cfg_addr, val); | |
535 | break; | |
536 | default: | |
537 | out_le32(cfg_addr, val); | |
538 | break; | |
539 | } | |
540 | ||
541 | return PCIBIOS_SUCCESSFUL; | |
542 | } | |
543 | ||
544 | static struct pci_ops mpc83xx_pcie_ops = { | |
545 | .read = mpc83xx_pcie_read_config, | |
546 | .write = mpc83xx_pcie_write_config, | |
547 | }; | |
548 | ||
549 | static int __init mpc83xx_pcie_setup(struct pci_controller *hose, | |
550 | struct resource *reg) | |
551 | { | |
552 | struct mpc83xx_pcie_priv *pcie; | |
553 | u32 cfg_bar; | |
554 | int ret = -ENOMEM; | |
555 | ||
556 | pcie = zalloc_maybe_bootmem(sizeof(*pcie), GFP_KERNEL); | |
557 | if (!pcie) | |
558 | return ret; | |
559 | ||
560 | pcie->cfg_type0 = ioremap(reg->start, resource_size(reg)); | |
561 | if (!pcie->cfg_type0) | |
562 | goto err0; | |
563 | ||
564 | cfg_bar = in_le32(pcie->cfg_type0 + PEX_OUTWIN0_BAR); | |
565 | if (!cfg_bar) { | |
566 | /* PCI-E isn't configured. */ | |
567 | ret = -ENODEV; | |
568 | goto err1; | |
569 | } | |
570 | ||
571 | pcie->cfg_type1 = ioremap(cfg_bar, 0x1000); | |
572 | if (!pcie->cfg_type1) | |
573 | goto err1; | |
574 | ||
575 | WARN_ON(hose->dn->data); | |
576 | hose->dn->data = pcie; | |
577 | hose->ops = &mpc83xx_pcie_ops; | |
578 | ||
579 | out_le32(pcie->cfg_type0 + PEX_OUTWIN0_TAH, 0); | |
580 | out_le32(pcie->cfg_type0 + PEX_OUTWIN0_TAL, 0); | |
581 | ||
582 | if (fsl_pcie_check_link(hose)) | |
583 | hose->indirect_type |= PPC_INDIRECT_TYPE_NO_PCIE_LINK; | |
584 | ||
585 | return 0; | |
586 | err1: | |
587 | iounmap(pcie->cfg_type0); | |
588 | err0: | |
589 | kfree(pcie); | |
590 | return ret; | |
591 | ||
592 | } | |
593 | ||
76fe1ffc JR |
594 | int __init mpc83xx_add_bridge(struct device_node *dev) |
595 | { | |
598804cd | 596 | int ret; |
76fe1ffc JR |
597 | int len; |
598 | struct pci_controller *hose; | |
5b70a097 JR |
599 | struct resource rsrc_reg; |
600 | struct resource rsrc_cfg; | |
76fe1ffc | 601 | const int *bus_range; |
5b70a097 | 602 | int primary; |
76fe1ffc | 603 | |
598804cd AV |
604 | if (!of_device_is_available(dev)) { |
605 | pr_warning("%s: disabled by the firmware.\n", | |
606 | dev->full_name); | |
607 | return -ENODEV; | |
608 | } | |
76fe1ffc JR |
609 | pr_debug("Adding PCI host bridge %s\n", dev->full_name); |
610 | ||
611 | /* Fetch host bridge registers address */ | |
5b70a097 JR |
612 | if (of_address_to_resource(dev, 0, &rsrc_reg)) { |
613 | printk(KERN_WARNING "Can't get pci register base!\n"); | |
614 | return -ENOMEM; | |
615 | } | |
616 | ||
617 | memset(&rsrc_cfg, 0, sizeof(rsrc_cfg)); | |
618 | ||
619 | if (of_address_to_resource(dev, 1, &rsrc_cfg)) { | |
620 | printk(KERN_WARNING | |
621 | "No pci config register base in dev tree, " | |
622 | "using default\n"); | |
623 | /* | |
624 | * MPC83xx supports up to two host controllers | |
625 | * one at 0x8500 has config space registers at 0x8300 | |
626 | * one at 0x8600 has config space registers at 0x8380 | |
627 | */ | |
628 | if ((rsrc_reg.start & 0xfffff) == 0x8500) | |
629 | rsrc_cfg.start = (rsrc_reg.start & 0xfff00000) + 0x8300; | |
630 | else if ((rsrc_reg.start & 0xfffff) == 0x8600) | |
631 | rsrc_cfg.start = (rsrc_reg.start & 0xfff00000) + 0x8380; | |
632 | } | |
633 | /* | |
634 | * Controller at offset 0x8500 is primary | |
635 | */ | |
636 | if ((rsrc_reg.start & 0xfffff) == 0x8500) | |
637 | primary = 1; | |
638 | else | |
639 | primary = 0; | |
76fe1ffc JR |
640 | |
641 | /* Get bus range if any */ | |
642 | bus_range = of_get_property(dev, "bus-range", &len); | |
643 | if (bus_range == NULL || len < 2 * sizeof(int)) { | |
644 | printk(KERN_WARNING "Can't get bus-range for %s, assume" | |
645 | " bus 0\n", dev->full_name); | |
646 | } | |
647 | ||
7fe519c2 | 648 | ppc_pci_add_flags(PPC_PCI_REASSIGN_ALL_BUS); |
76fe1ffc JR |
649 | hose = pcibios_alloc_controller(dev); |
650 | if (!hose) | |
651 | return -ENOMEM; | |
652 | ||
653 | hose->first_busno = bus_range ? bus_range[0] : 0; | |
654 | hose->last_busno = bus_range ? bus_range[1] : 0xff; | |
655 | ||
598804cd AV |
656 | if (of_device_is_compatible(dev, "fsl,mpc8314-pcie")) { |
657 | ret = mpc83xx_pcie_setup(hose, &rsrc_reg); | |
658 | if (ret) | |
659 | goto err0; | |
660 | } else { | |
661 | setup_indirect_pci(hose, rsrc_cfg.start, | |
662 | rsrc_cfg.start + 4, 0); | |
663 | } | |
76fe1ffc | 664 | |
35225802 | 665 | printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx. " |
76fe1ffc | 666 | "Firmware bus number: %d->%d\n", |
5b70a097 | 667 | (unsigned long long)rsrc_reg.start, hose->first_busno, |
76fe1ffc JR |
668 | hose->last_busno); |
669 | ||
670 | pr_debug(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n", | |
671 | hose, hose->cfg_addr, hose->cfg_data); | |
672 | ||
673 | /* Interpret the "ranges" property */ | |
674 | /* This also maps the I/O region and sets isa_io/mem_base */ | |
675 | pci_process_bridge_OF_ranges(hose, dev, primary); | |
676 | ||
677 | return 0; | |
598804cd AV |
678 | err0: |
679 | pcibios_free_controller(hose); | |
680 | return ret; | |
76fe1ffc JR |
681 | } |
682 | #endif /* CONFIG_PPC_83xx */ |