Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* $Id: pci_sabre.c,v 1.42 2002/01/23 11:27:32 davem Exp $ |
2 | * pci_sabre.c: Sabre specific PCI controller support. | |
3 | * | |
4 | * Copyright (C) 1997, 1998, 1999 David S. Miller (davem@caipfs.rutgers.edu) | |
5 | * Copyright (C) 1998, 1999 Eddie C. Dost (ecd@skynet.be) | |
6 | * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com) | |
7 | */ | |
8 | ||
9 | #include <linux/kernel.h> | |
10 | #include <linux/types.h> | |
11 | #include <linux/pci.h> | |
12 | #include <linux/init.h> | |
13 | #include <linux/slab.h> | |
14 | #include <linux/interrupt.h> | |
15 | ||
16 | #include <asm/apb.h> | |
17 | #include <asm/pbm.h> | |
18 | #include <asm/iommu.h> | |
19 | #include <asm/irq.h> | |
20 | #include <asm/smp.h> | |
21 | #include <asm/oplib.h> | |
22 | ||
23 | #include "pci_impl.h" | |
24 | #include "iommu_common.h" | |
25 | ||
26 | /* All SABRE registers are 64-bits. The following accessor | |
27 | * routines are how they are accessed. The REG parameter | |
28 | * is a physical address. | |
29 | */ | |
30 | #define sabre_read(__reg) \ | |
31 | ({ u64 __ret; \ | |
32 | __asm__ __volatile__("ldxa [%1] %2, %0" \ | |
33 | : "=r" (__ret) \ | |
34 | : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \ | |
35 | : "memory"); \ | |
36 | __ret; \ | |
37 | }) | |
38 | #define sabre_write(__reg, __val) \ | |
39 | __asm__ __volatile__("stxa %0, [%1] %2" \ | |
40 | : /* no outputs */ \ | |
41 | : "r" (__val), "r" (__reg), \ | |
42 | "i" (ASI_PHYS_BYPASS_EC_E) \ | |
43 | : "memory") | |
44 | ||
45 | /* SABRE PCI controller register offsets and definitions. */ | |
46 | #define SABRE_UE_AFSR 0x0030UL | |
47 | #define SABRE_UEAFSR_PDRD 0x4000000000000000UL /* Primary PCI DMA Read */ | |
48 | #define SABRE_UEAFSR_PDWR 0x2000000000000000UL /* Primary PCI DMA Write */ | |
49 | #define SABRE_UEAFSR_SDRD 0x0800000000000000UL /* Secondary PCI DMA Read */ | |
50 | #define SABRE_UEAFSR_SDWR 0x0400000000000000UL /* Secondary PCI DMA Write */ | |
51 | #define SABRE_UEAFSR_SDTE 0x0200000000000000UL /* Secondary DMA Translation Error */ | |
52 | #define SABRE_UEAFSR_PDTE 0x0100000000000000UL /* Primary DMA Translation Error */ | |
53 | #define SABRE_UEAFSR_BMSK 0x0000ffff00000000UL /* Bytemask */ | |
54 | #define SABRE_UEAFSR_OFF 0x00000000e0000000UL /* Offset (AFAR bits [5:3] */ | |
55 | #define SABRE_UEAFSR_BLK 0x0000000000800000UL /* Was block operation */ | |
56 | #define SABRE_UECE_AFAR 0x0038UL | |
57 | #define SABRE_CE_AFSR 0x0040UL | |
58 | #define SABRE_CEAFSR_PDRD 0x4000000000000000UL /* Primary PCI DMA Read */ | |
59 | #define SABRE_CEAFSR_PDWR 0x2000000000000000UL /* Primary PCI DMA Write */ | |
60 | #define SABRE_CEAFSR_SDRD 0x0800000000000000UL /* Secondary PCI DMA Read */ | |
61 | #define SABRE_CEAFSR_SDWR 0x0400000000000000UL /* Secondary PCI DMA Write */ | |
62 | #define SABRE_CEAFSR_ESYND 0x00ff000000000000UL /* ECC Syndrome */ | |
63 | #define SABRE_CEAFSR_BMSK 0x0000ffff00000000UL /* Bytemask */ | |
64 | #define SABRE_CEAFSR_OFF 0x00000000e0000000UL /* Offset */ | |
65 | #define SABRE_CEAFSR_BLK 0x0000000000800000UL /* Was block operation */ | |
66 | #define SABRE_UECE_AFAR_ALIAS 0x0048UL /* Aliases to 0x0038 */ | |
67 | #define SABRE_IOMMU_CONTROL 0x0200UL | |
68 | #define SABRE_IOMMUCTRL_ERRSTS 0x0000000006000000UL /* Error status bits */ | |
69 | #define SABRE_IOMMUCTRL_ERR 0x0000000001000000UL /* Error present in IOTLB */ | |
70 | #define SABRE_IOMMUCTRL_LCKEN 0x0000000000800000UL /* IOTLB lock enable */ | |
71 | #define SABRE_IOMMUCTRL_LCKPTR 0x0000000000780000UL /* IOTLB lock pointer */ | |
72 | #define SABRE_IOMMUCTRL_TSBSZ 0x0000000000070000UL /* TSB Size */ | |
73 | #define SABRE_IOMMU_TSBSZ_1K 0x0000000000000000 | |
74 | #define SABRE_IOMMU_TSBSZ_2K 0x0000000000010000 | |
75 | #define SABRE_IOMMU_TSBSZ_4K 0x0000000000020000 | |
76 | #define SABRE_IOMMU_TSBSZ_8K 0x0000000000030000 | |
77 | #define SABRE_IOMMU_TSBSZ_16K 0x0000000000040000 | |
78 | #define SABRE_IOMMU_TSBSZ_32K 0x0000000000050000 | |
79 | #define SABRE_IOMMU_TSBSZ_64K 0x0000000000060000 | |
80 | #define SABRE_IOMMU_TSBSZ_128K 0x0000000000070000 | |
81 | #define SABRE_IOMMUCTRL_TBWSZ 0x0000000000000004UL /* TSB assumed page size */ | |
82 | #define SABRE_IOMMUCTRL_DENAB 0x0000000000000002UL /* Diagnostic Mode Enable */ | |
83 | #define SABRE_IOMMUCTRL_ENAB 0x0000000000000001UL /* IOMMU Enable */ | |
84 | #define SABRE_IOMMU_TSBBASE 0x0208UL | |
85 | #define SABRE_IOMMU_FLUSH 0x0210UL | |
86 | #define SABRE_IMAP_A_SLOT0 0x0c00UL | |
87 | #define SABRE_IMAP_B_SLOT0 0x0c20UL | |
88 | #define SABRE_IMAP_SCSI 0x1000UL | |
89 | #define SABRE_IMAP_ETH 0x1008UL | |
90 | #define SABRE_IMAP_BPP 0x1010UL | |
91 | #define SABRE_IMAP_AU_REC 0x1018UL | |
92 | #define SABRE_IMAP_AU_PLAY 0x1020UL | |
93 | #define SABRE_IMAP_PFAIL 0x1028UL | |
94 | #define SABRE_IMAP_KMS 0x1030UL | |
95 | #define SABRE_IMAP_FLPY 0x1038UL | |
96 | #define SABRE_IMAP_SHW 0x1040UL | |
97 | #define SABRE_IMAP_KBD 0x1048UL | |
98 | #define SABRE_IMAP_MS 0x1050UL | |
99 | #define SABRE_IMAP_SER 0x1058UL | |
100 | #define SABRE_IMAP_UE 0x1070UL | |
101 | #define SABRE_IMAP_CE 0x1078UL | |
102 | #define SABRE_IMAP_PCIERR 0x1080UL | |
103 | #define SABRE_IMAP_GFX 0x1098UL | |
104 | #define SABRE_IMAP_EUPA 0x10a0UL | |
105 | #define SABRE_ICLR_A_SLOT0 0x1400UL | |
106 | #define SABRE_ICLR_B_SLOT0 0x1480UL | |
107 | #define SABRE_ICLR_SCSI 0x1800UL | |
108 | #define SABRE_ICLR_ETH 0x1808UL | |
109 | #define SABRE_ICLR_BPP 0x1810UL | |
110 | #define SABRE_ICLR_AU_REC 0x1818UL | |
111 | #define SABRE_ICLR_AU_PLAY 0x1820UL | |
112 | #define SABRE_ICLR_PFAIL 0x1828UL | |
113 | #define SABRE_ICLR_KMS 0x1830UL | |
114 | #define SABRE_ICLR_FLPY 0x1838UL | |
115 | #define SABRE_ICLR_SHW 0x1840UL | |
116 | #define SABRE_ICLR_KBD 0x1848UL | |
117 | #define SABRE_ICLR_MS 0x1850UL | |
118 | #define SABRE_ICLR_SER 0x1858UL | |
119 | #define SABRE_ICLR_UE 0x1870UL | |
120 | #define SABRE_ICLR_CE 0x1878UL | |
121 | #define SABRE_ICLR_PCIERR 0x1880UL | |
122 | #define SABRE_WRSYNC 0x1c20UL | |
123 | #define SABRE_PCICTRL 0x2000UL | |
124 | #define SABRE_PCICTRL_MRLEN 0x0000001000000000UL /* Use MemoryReadLine for block loads/stores */ | |
125 | #define SABRE_PCICTRL_SERR 0x0000000400000000UL /* Set when SERR asserted on PCI bus */ | |
126 | #define SABRE_PCICTRL_ARBPARK 0x0000000000200000UL /* Bus Parking 0=Ultra-IIi 1=prev-bus-owner */ | |
127 | #define SABRE_PCICTRL_CPUPRIO 0x0000000000100000UL /* Ultra-IIi granted every other bus cycle */ | |
128 | #define SABRE_PCICTRL_ARBPRIO 0x00000000000f0000UL /* Slot which is granted every other bus cycle */ | |
129 | #define SABRE_PCICTRL_ERREN 0x0000000000000100UL /* PCI Error Interrupt Enable */ | |
130 | #define SABRE_PCICTRL_RTRYWE 0x0000000000000080UL /* DMA Flow Control 0=wait-if-possible 1=retry */ | |
131 | #define SABRE_PCICTRL_AEN 0x000000000000000fUL /* Slot PCI arbitration enables */ | |
132 | #define SABRE_PIOAFSR 0x2010UL | |
133 | #define SABRE_PIOAFSR_PMA 0x8000000000000000UL /* Primary Master Abort */ | |
134 | #define SABRE_PIOAFSR_PTA 0x4000000000000000UL /* Primary Target Abort */ | |
135 | #define SABRE_PIOAFSR_PRTRY 0x2000000000000000UL /* Primary Excessive Retries */ | |
136 | #define SABRE_PIOAFSR_PPERR 0x1000000000000000UL /* Primary Parity Error */ | |
137 | #define SABRE_PIOAFSR_SMA 0x0800000000000000UL /* Secondary Master Abort */ | |
138 | #define SABRE_PIOAFSR_STA 0x0400000000000000UL /* Secondary Target Abort */ | |
139 | #define SABRE_PIOAFSR_SRTRY 0x0200000000000000UL /* Secondary Excessive Retries */ | |
140 | #define SABRE_PIOAFSR_SPERR 0x0100000000000000UL /* Secondary Parity Error */ | |
141 | #define SABRE_PIOAFSR_BMSK 0x0000ffff00000000UL /* Byte Mask */ | |
142 | #define SABRE_PIOAFSR_BLK 0x0000000080000000UL /* Was Block Operation */ | |
143 | #define SABRE_PIOAFAR 0x2018UL | |
144 | #define SABRE_PCIDIAG 0x2020UL | |
145 | #define SABRE_PCIDIAG_DRTRY 0x0000000000000040UL /* Disable PIO Retry Limit */ | |
146 | #define SABRE_PCIDIAG_IPAPAR 0x0000000000000008UL /* Invert PIO Address Parity */ | |
147 | #define SABRE_PCIDIAG_IPDPAR 0x0000000000000004UL /* Invert PIO Data Parity */ | |
148 | #define SABRE_PCIDIAG_IDDPAR 0x0000000000000002UL /* Invert DMA Data Parity */ | |
149 | #define SABRE_PCIDIAG_ELPBK 0x0000000000000001UL /* Loopback Enable - not supported */ | |
150 | #define SABRE_PCITASR 0x2028UL | |
151 | #define SABRE_PCITASR_EF 0x0000000000000080UL /* Respond to 0xe0000000-0xffffffff */ | |
152 | #define SABRE_PCITASR_CD 0x0000000000000040UL /* Respond to 0xc0000000-0xdfffffff */ | |
153 | #define SABRE_PCITASR_AB 0x0000000000000020UL /* Respond to 0xa0000000-0xbfffffff */ | |
154 | #define SABRE_PCITASR_89 0x0000000000000010UL /* Respond to 0x80000000-0x9fffffff */ | |
155 | #define SABRE_PCITASR_67 0x0000000000000008UL /* Respond to 0x60000000-0x7fffffff */ | |
156 | #define SABRE_PCITASR_45 0x0000000000000004UL /* Respond to 0x40000000-0x5fffffff */ | |
157 | #define SABRE_PCITASR_23 0x0000000000000002UL /* Respond to 0x20000000-0x3fffffff */ | |
158 | #define SABRE_PCITASR_01 0x0000000000000001UL /* Respond to 0x00000000-0x1fffffff */ | |
159 | #define SABRE_PIOBUF_DIAG 0x5000UL | |
160 | #define SABRE_DMABUF_DIAGLO 0x5100UL | |
161 | #define SABRE_DMABUF_DIAGHI 0x51c0UL | |
162 | #define SABRE_IMAP_GFX_ALIAS 0x6000UL /* Aliases to 0x1098 */ | |
163 | #define SABRE_IMAP_EUPA_ALIAS 0x8000UL /* Aliases to 0x10a0 */ | |
164 | #define SABRE_IOMMU_VADIAG 0xa400UL | |
165 | #define SABRE_IOMMU_TCDIAG 0xa408UL | |
166 | #define SABRE_IOMMU_TAG 0xa580UL | |
167 | #define SABRE_IOMMUTAG_ERRSTS 0x0000000001800000UL /* Error status bits */ | |
168 | #define SABRE_IOMMUTAG_ERR 0x0000000000400000UL /* Error present */ | |
169 | #define SABRE_IOMMUTAG_WRITE 0x0000000000200000UL /* Page is writable */ | |
170 | #define SABRE_IOMMUTAG_STREAM 0x0000000000100000UL /* Streamable bit - unused */ | |
171 | #define SABRE_IOMMUTAG_SIZE 0x0000000000080000UL /* 0=8k 1=16k */ | |
172 | #define SABRE_IOMMUTAG_VPN 0x000000000007ffffUL /* Virtual Page Number [31:13] */ | |
173 | #define SABRE_IOMMU_DATA 0xa600UL | |
174 | #define SABRE_IOMMUDATA_VALID 0x0000000040000000UL /* Valid */ | |
175 | #define SABRE_IOMMUDATA_USED 0x0000000020000000UL /* Used (for LRU algorithm) */ | |
176 | #define SABRE_IOMMUDATA_CACHE 0x0000000010000000UL /* Cacheable */ | |
177 | #define SABRE_IOMMUDATA_PPN 0x00000000001fffffUL /* Physical Page Number [33:13] */ | |
178 | #define SABRE_PCI_IRQSTATE 0xa800UL | |
179 | #define SABRE_OBIO_IRQSTATE 0xa808UL | |
180 | #define SABRE_FFBCFG 0xf000UL | |
181 | #define SABRE_FFBCFG_SPRQS 0x000000000f000000 /* Slave P_RQST queue size */ | |
182 | #define SABRE_FFBCFG_ONEREAD 0x0000000000004000 /* Slave supports one outstanding read */ | |
183 | #define SABRE_MCCTRL0 0xf010UL | |
184 | #define SABRE_MCCTRL0_RENAB 0x0000000080000000 /* Refresh Enable */ | |
185 | #define SABRE_MCCTRL0_EENAB 0x0000000010000000 /* Enable all ECC functions */ | |
186 | #define SABRE_MCCTRL0_11BIT 0x0000000000001000 /* Enable 11-bit column addressing */ | |
187 | #define SABRE_MCCTRL0_DPP 0x0000000000000f00 /* DIMM Pair Present Bits */ | |
188 | #define SABRE_MCCTRL0_RINTVL 0x00000000000000ff /* Refresh Interval */ | |
189 | #define SABRE_MCCTRL1 0xf018UL | |
190 | #define SABRE_MCCTRL1_AMDC 0x0000000038000000 /* Advance Memdata Clock */ | |
191 | #define SABRE_MCCTRL1_ARDC 0x0000000007000000 /* Advance DRAM Read Data Clock */ | |
192 | #define SABRE_MCCTRL1_CSR 0x0000000000e00000 /* CAS to RAS delay for CBR refresh */ | |
193 | #define SABRE_MCCTRL1_CASRW 0x00000000001c0000 /* CAS length for read/write */ | |
194 | #define SABRE_MCCTRL1_RCD 0x0000000000038000 /* RAS to CAS delay */ | |
195 | #define SABRE_MCCTRL1_CP 0x0000000000007000 /* CAS Precharge */ | |
196 | #define SABRE_MCCTRL1_RP 0x0000000000000e00 /* RAS Precharge */ | |
197 | #define SABRE_MCCTRL1_RAS 0x00000000000001c0 /* Length of RAS for refresh */ | |
198 | #define SABRE_MCCTRL1_CASRW2 0x0000000000000038 /* Must be same as CASRW */ | |
199 | #define SABRE_MCCTRL1_RSC 0x0000000000000007 /* RAS after CAS hold time */ | |
200 | #define SABRE_RESETCTRL 0xf020UL | |
201 | ||
202 | #define SABRE_CONFIGSPACE 0x001000000UL | |
203 | #define SABRE_IOSPACE 0x002000000UL | |
204 | #define SABRE_IOSPACE_SIZE 0x000ffffffUL | |
205 | #define SABRE_MEMSPACE 0x100000000UL | |
206 | #define SABRE_MEMSPACE_SIZE 0x07fffffffUL | |
207 | ||
208 | /* UltraSparc-IIi Programmer's Manual, page 325, PCI | |
209 | * configuration space address format: | |
210 | * | |
211 | * 32 24 23 16 15 11 10 8 7 2 1 0 | |
212 | * --------------------------------------------------------- | |
213 | * |0 0 0 0 0 0 0 0 1| bus | device | function | reg | 0 0 | | |
214 | * --------------------------------------------------------- | |
215 | */ | |
216 | #define SABRE_CONFIG_BASE(PBM) \ | |
217 | ((PBM)->config_space | (1UL << 24)) | |
218 | #define SABRE_CONFIG_ENCODE(BUS, DEVFN, REG) \ | |
219 | (((unsigned long)(BUS) << 16) | \ | |
220 | ((unsigned long)(DEVFN) << 8) | \ | |
221 | ((unsigned long)(REG))) | |
222 | ||
223 | static int hummingbird_p; | |
224 | static struct pci_bus *sabre_root_bus; | |
225 | ||
226 | static void *sabre_pci_config_mkaddr(struct pci_pbm_info *pbm, | |
227 | unsigned char bus, | |
228 | unsigned int devfn, | |
229 | int where) | |
230 | { | |
231 | if (!pbm) | |
232 | return NULL; | |
233 | return (void *) | |
234 | (SABRE_CONFIG_BASE(pbm) | | |
235 | SABRE_CONFIG_ENCODE(bus, devfn, where)); | |
236 | } | |
237 | ||
238 | static int sabre_out_of_range(unsigned char devfn) | |
239 | { | |
240 | if (hummingbird_p) | |
241 | return 0; | |
242 | ||
243 | return (((PCI_SLOT(devfn) == 0) && (PCI_FUNC(devfn) > 0)) || | |
244 | ((PCI_SLOT(devfn) == 1) && (PCI_FUNC(devfn) > 1)) || | |
245 | (PCI_SLOT(devfn) > 1)); | |
246 | } | |
247 | ||
248 | static int __sabre_out_of_range(struct pci_pbm_info *pbm, | |
249 | unsigned char bus, | |
250 | unsigned char devfn) | |
251 | { | |
252 | if (hummingbird_p) | |
253 | return 0; | |
254 | ||
255 | return ((pbm->parent == 0) || | |
256 | ((pbm == &pbm->parent->pbm_B) && | |
257 | (bus == pbm->pci_first_busno) && | |
258 | PCI_SLOT(devfn) > 8) || | |
259 | ((pbm == &pbm->parent->pbm_A) && | |
260 | (bus == pbm->pci_first_busno) && | |
261 | PCI_SLOT(devfn) > 8)); | |
262 | } | |
263 | ||
264 | static int __sabre_read_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn, | |
265 | int where, int size, u32 *value) | |
266 | { | |
267 | struct pci_pbm_info *pbm = bus_dev->sysdata; | |
268 | unsigned char bus = bus_dev->number; | |
269 | u32 *addr; | |
270 | u16 tmp16; | |
271 | u8 tmp8; | |
272 | ||
273 | switch (size) { | |
274 | case 1: | |
275 | *value = 0xff; | |
276 | break; | |
277 | case 2: | |
278 | *value = 0xffff; | |
279 | break; | |
280 | case 4: | |
281 | *value = 0xffffffff; | |
282 | break; | |
283 | } | |
284 | ||
285 | addr = sabre_pci_config_mkaddr(pbm, bus, devfn, where); | |
286 | if (!addr) | |
287 | return PCIBIOS_SUCCESSFUL; | |
288 | ||
289 | if (__sabre_out_of_range(pbm, bus, devfn)) | |
290 | return PCIBIOS_SUCCESSFUL; | |
291 | ||
292 | switch (size) { | |
293 | case 1: | |
294 | pci_config_read8((u8 *) addr, &tmp8); | |
295 | *value = tmp8; | |
296 | break; | |
297 | ||
298 | case 2: | |
299 | if (where & 0x01) { | |
300 | printk("pci_read_config_word: misaligned reg [%x]\n", | |
301 | where); | |
302 | return PCIBIOS_SUCCESSFUL; | |
303 | } | |
304 | pci_config_read16((u16 *) addr, &tmp16); | |
305 | *value = tmp16; | |
306 | break; | |
307 | ||
308 | case 4: | |
309 | if (where & 0x03) { | |
310 | printk("pci_read_config_dword: misaligned reg [%x]\n", | |
311 | where); | |
312 | return PCIBIOS_SUCCESSFUL; | |
313 | } | |
314 | pci_config_read32(addr, value); | |
315 | break; | |
316 | } | |
317 | ||
318 | return PCIBIOS_SUCCESSFUL; | |
319 | } | |
320 | ||
321 | static int sabre_read_pci_cfg(struct pci_bus *bus, unsigned int devfn, | |
322 | int where, int size, u32 *value) | |
323 | { | |
324 | if (!bus->number && sabre_out_of_range(devfn)) { | |
325 | switch (size) { | |
326 | case 1: | |
327 | *value = 0xff; | |
328 | break; | |
329 | case 2: | |
330 | *value = 0xffff; | |
331 | break; | |
332 | case 4: | |
333 | *value = 0xffffffff; | |
334 | break; | |
335 | } | |
336 | return PCIBIOS_SUCCESSFUL; | |
337 | } | |
338 | ||
339 | if (bus->number || PCI_SLOT(devfn)) | |
340 | return __sabre_read_pci_cfg(bus, devfn, where, size, value); | |
341 | ||
342 | /* When accessing PCI config space of the PCI controller itself (bus | |
343 | * 0, device slot 0, function 0) there are restrictions. Each | |
344 | * register must be accessed as it's natural size. Thus, for example | |
345 | * the Vendor ID must be accessed as a 16-bit quantity. | |
346 | */ | |
347 | ||
348 | switch (size) { | |
349 | case 1: | |
350 | if (where < 8) { | |
351 | u32 tmp32; | |
352 | u16 tmp16; | |
353 | ||
354 | __sabre_read_pci_cfg(bus, devfn, where & ~1, 2, &tmp32); | |
355 | tmp16 = (u16) tmp32; | |
356 | if (where & 1) | |
357 | *value = tmp16 >> 8; | |
358 | else | |
359 | *value = tmp16 & 0xff; | |
360 | } else | |
361 | return __sabre_read_pci_cfg(bus, devfn, where, 1, value); | |
362 | break; | |
363 | ||
364 | case 2: | |
365 | if (where < 8) | |
366 | return __sabre_read_pci_cfg(bus, devfn, where, 2, value); | |
367 | else { | |
368 | u32 tmp32; | |
369 | u8 tmp8; | |
370 | ||
371 | __sabre_read_pci_cfg(bus, devfn, where, 1, &tmp32); | |
372 | tmp8 = (u8) tmp32; | |
373 | *value = tmp8; | |
374 | __sabre_read_pci_cfg(bus, devfn, where + 1, 1, &tmp32); | |
375 | tmp8 = (u8) tmp32; | |
376 | *value |= tmp8 << 8; | |
377 | } | |
378 | break; | |
379 | ||
380 | case 4: { | |
381 | u32 tmp32; | |
382 | u16 tmp16; | |
383 | ||
384 | sabre_read_pci_cfg(bus, devfn, where, 2, &tmp32); | |
385 | tmp16 = (u16) tmp32; | |
386 | *value = tmp16; | |
387 | sabre_read_pci_cfg(bus, devfn, where + 2, 2, &tmp32); | |
388 | tmp16 = (u16) tmp32; | |
389 | *value |= tmp16 << 16; | |
390 | break; | |
391 | } | |
392 | } | |
393 | return PCIBIOS_SUCCESSFUL; | |
394 | } | |
395 | ||
396 | static int __sabre_write_pci_cfg(struct pci_bus *bus_dev, unsigned int devfn, | |
397 | int where, int size, u32 value) | |
398 | { | |
399 | struct pci_pbm_info *pbm = bus_dev->sysdata; | |
400 | unsigned char bus = bus_dev->number; | |
401 | u32 *addr; | |
402 | ||
403 | addr = sabre_pci_config_mkaddr(pbm, bus, devfn, where); | |
404 | if (!addr) | |
405 | return PCIBIOS_SUCCESSFUL; | |
406 | ||
407 | if (__sabre_out_of_range(pbm, bus, devfn)) | |
408 | return PCIBIOS_SUCCESSFUL; | |
409 | ||
410 | switch (size) { | |
411 | case 1: | |
412 | pci_config_write8((u8 *) addr, value); | |
413 | break; | |
414 | ||
415 | case 2: | |
416 | if (where & 0x01) { | |
417 | printk("pci_write_config_word: misaligned reg [%x]\n", | |
418 | where); | |
419 | return PCIBIOS_SUCCESSFUL; | |
420 | } | |
421 | pci_config_write16((u16 *) addr, value); | |
422 | break; | |
423 | ||
424 | case 4: | |
425 | if (where & 0x03) { | |
426 | printk("pci_write_config_dword: misaligned reg [%x]\n", | |
427 | where); | |
428 | return PCIBIOS_SUCCESSFUL; | |
429 | } | |
430 | pci_config_write32(addr, value); | |
431 | break; | |
432 | } | |
433 | ||
434 | return PCIBIOS_SUCCESSFUL; | |
435 | } | |
436 | ||
437 | static int sabre_write_pci_cfg(struct pci_bus *bus, unsigned int devfn, | |
438 | int where, int size, u32 value) | |
439 | { | |
440 | if (bus->number) | |
441 | return __sabre_write_pci_cfg(bus, devfn, where, size, value); | |
442 | ||
443 | if (sabre_out_of_range(devfn)) | |
444 | return PCIBIOS_SUCCESSFUL; | |
445 | ||
446 | switch (size) { | |
447 | case 1: | |
448 | if (where < 8) { | |
449 | u32 tmp32; | |
450 | u16 tmp16; | |
451 | ||
452 | __sabre_read_pci_cfg(bus, devfn, where & ~1, 2, &tmp32); | |
453 | tmp16 = (u16) tmp32; | |
454 | if (where & 1) { | |
455 | value &= 0x00ff; | |
456 | value |= tmp16 << 8; | |
457 | } else { | |
458 | value &= 0xff00; | |
459 | value |= tmp16; | |
460 | } | |
461 | tmp32 = (u32) tmp16; | |
462 | return __sabre_write_pci_cfg(bus, devfn, where & ~1, 2, tmp32); | |
463 | } else | |
464 | return __sabre_write_pci_cfg(bus, devfn, where, 1, value); | |
465 | break; | |
466 | case 2: | |
467 | if (where < 8) | |
468 | return __sabre_write_pci_cfg(bus, devfn, where, 2, value); | |
469 | else { | |
470 | __sabre_write_pci_cfg(bus, devfn, where, 1, value & 0xff); | |
471 | __sabre_write_pci_cfg(bus, devfn, where + 1, 1, value >> 8); | |
472 | } | |
473 | break; | |
474 | case 4: | |
475 | sabre_write_pci_cfg(bus, devfn, where, 2, value & 0xffff); | |
476 | sabre_write_pci_cfg(bus, devfn, where + 2, 2, value >> 16); | |
477 | break; | |
478 | } | |
479 | return PCIBIOS_SUCCESSFUL; | |
480 | } | |
481 | ||
482 | static struct pci_ops sabre_ops = { | |
483 | .read = sabre_read_pci_cfg, | |
484 | .write = sabre_write_pci_cfg, | |
485 | }; | |
486 | ||
487 | static unsigned long sabre_pcislot_imap_offset(unsigned long ino) | |
488 | { | |
489 | unsigned int bus = (ino & 0x10) >> 4; | |
490 | unsigned int slot = (ino & 0x0c) >> 2; | |
491 | ||
492 | if (bus == 0) | |
493 | return SABRE_IMAP_A_SLOT0 + (slot * 8); | |
494 | else | |
495 | return SABRE_IMAP_B_SLOT0 + (slot * 8); | |
496 | } | |
497 | ||
498 | static unsigned long __onboard_imap_off[] = { | |
499 | /*0x20*/ SABRE_IMAP_SCSI, | |
500 | /*0x21*/ SABRE_IMAP_ETH, | |
501 | /*0x22*/ SABRE_IMAP_BPP, | |
502 | /*0x23*/ SABRE_IMAP_AU_REC, | |
503 | /*0x24*/ SABRE_IMAP_AU_PLAY, | |
504 | /*0x25*/ SABRE_IMAP_PFAIL, | |
505 | /*0x26*/ SABRE_IMAP_KMS, | |
506 | /*0x27*/ SABRE_IMAP_FLPY, | |
507 | /*0x28*/ SABRE_IMAP_SHW, | |
508 | /*0x29*/ SABRE_IMAP_KBD, | |
509 | /*0x2a*/ SABRE_IMAP_MS, | |
510 | /*0x2b*/ SABRE_IMAP_SER, | |
511 | /*0x2c*/ 0 /* reserved */, | |
512 | /*0x2d*/ 0 /* reserved */, | |
513 | /*0x2e*/ SABRE_IMAP_UE, | |
514 | /*0x2f*/ SABRE_IMAP_CE, | |
515 | /*0x30*/ SABRE_IMAP_PCIERR, | |
516 | }; | |
517 | #define SABRE_ONBOARD_IRQ_BASE 0x20 | |
518 | #define SABRE_ONBOARD_IRQ_LAST 0x30 | |
519 | #define sabre_onboard_imap_offset(__ino) \ | |
520 | __onboard_imap_off[(__ino) - SABRE_ONBOARD_IRQ_BASE] | |
521 | ||
522 | #define sabre_iclr_offset(ino) \ | |
523 | ((ino & 0x20) ? (SABRE_ICLR_SCSI + (((ino) & 0x1f) << 3)) : \ | |
524 | (SABRE_ICLR_A_SLOT0 + (((ino) & 0x1f)<<3))) | |
525 | ||
526 | /* PCI SABRE INO number to Sparc PIL level. */ | |
527 | static unsigned char sabre_pil_table[] = { | |
528 | /*0x00*/0, 0, 0, 0, /* PCI A slot 0 Int A, B, C, D */ | |
529 | /*0x04*/0, 0, 0, 0, /* PCI A slot 1 Int A, B, C, D */ | |
530 | /*0x08*/0, 0, 0, 0, /* PCI A slot 2 Int A, B, C, D */ | |
531 | /*0x0c*/0, 0, 0, 0, /* PCI A slot 3 Int A, B, C, D */ | |
532 | /*0x10*/0, 0, 0, 0, /* PCI B slot 0 Int A, B, C, D */ | |
533 | /*0x14*/0, 0, 0, 0, /* PCI B slot 1 Int A, B, C, D */ | |
534 | /*0x18*/0, 0, 0, 0, /* PCI B slot 2 Int A, B, C, D */ | |
535 | /*0x1c*/0, 0, 0, 0, /* PCI B slot 3 Int A, B, C, D */ | |
536 | /*0x20*/4, /* SCSI */ | |
537 | /*0x21*/5, /* Ethernet */ | |
538 | /*0x22*/8, /* Parallel Port */ | |
539 | /*0x23*/13, /* Audio Record */ | |
540 | /*0x24*/14, /* Audio Playback */ | |
541 | /*0x25*/15, /* PowerFail */ | |
542 | /*0x26*/4, /* second SCSI */ | |
543 | /*0x27*/11, /* Floppy */ | |
544 | /*0x28*/4, /* Spare Hardware */ | |
545 | /*0x29*/9, /* Keyboard */ | |
546 | /*0x2a*/4, /* Mouse */ | |
547 | /*0x2b*/12, /* Serial */ | |
548 | /*0x2c*/10, /* Timer 0 */ | |
549 | /*0x2d*/11, /* Timer 1 */ | |
550 | /*0x2e*/15, /* Uncorrectable ECC */ | |
551 | /*0x2f*/15, /* Correctable ECC */ | |
552 | /*0x30*/15, /* PCI Bus A Error */ | |
553 | /*0x31*/15, /* PCI Bus B Error */ | |
554 | /*0x32*/15, /* Power Management */ | |
555 | }; | |
556 | ||
557 | static int __init sabre_ino_to_pil(struct pci_dev *pdev, unsigned int ino) | |
558 | { | |
559 | int ret; | |
560 | ||
561 | if (pdev && | |
562 | pdev->vendor == PCI_VENDOR_ID_SUN && | |
563 | pdev->device == PCI_DEVICE_ID_SUN_RIO_USB) | |
564 | return 9; | |
565 | ||
566 | ret = sabre_pil_table[ino]; | |
567 | if (ret == 0 && pdev == NULL) { | |
568 | ret = 4; | |
569 | } else if (ret == 0) { | |
570 | switch ((pdev->class >> 16) & 0xff) { | |
571 | case PCI_BASE_CLASS_STORAGE: | |
572 | ret = 4; | |
573 | break; | |
574 | ||
575 | case PCI_BASE_CLASS_NETWORK: | |
576 | ret = 6; | |
577 | break; | |
578 | ||
579 | case PCI_BASE_CLASS_DISPLAY: | |
580 | ret = 9; | |
581 | break; | |
582 | ||
583 | case PCI_BASE_CLASS_MULTIMEDIA: | |
584 | case PCI_BASE_CLASS_MEMORY: | |
585 | case PCI_BASE_CLASS_BRIDGE: | |
586 | case PCI_BASE_CLASS_SERIAL: | |
587 | ret = 10; | |
588 | break; | |
589 | ||
590 | default: | |
591 | ret = 4; | |
592 | break; | |
593 | }; | |
594 | } | |
595 | return ret; | |
596 | } | |
597 | ||
088dd1f8 DM |
598 | /* When a device lives behind a bridge deeper in the PCI bus topology |
599 | * than APB, a special sequence must run to make sure all pending DMA | |
600 | * transfers at the time of IRQ delivery are visible in the coherency | |
601 | * domain by the cpu. This sequence is to perform a read on the far | |
602 | * side of the non-APB bridge, then perform a read of Sabre's DMA | |
603 | * write-sync register. | |
604 | */ | |
605 | static void sabre_wsync_handler(struct ino_bucket *bucket, void *_arg1, void *_arg2) | |
606 | { | |
607 | struct pci_dev *pdev = _arg1; | |
608 | unsigned long sync_reg = (unsigned long) _arg2; | |
609 | u16 _unused; | |
610 | ||
611 | pci_read_config_word(pdev, PCI_VENDOR_ID, &_unused); | |
612 | sabre_read(sync_reg); | |
613 | } | |
614 | ||
1da177e4 LT |
615 | static unsigned int __init sabre_irq_build(struct pci_pbm_info *pbm, |
616 | struct pci_dev *pdev, | |
617 | unsigned int ino) | |
618 | { | |
619 | struct ino_bucket *bucket; | |
620 | unsigned long imap, iclr; | |
621 | unsigned long imap_off, iclr_off; | |
622 | int pil, inofixup = 0; | |
623 | ||
624 | ino &= PCI_IRQ_INO; | |
625 | if (ino < SABRE_ONBOARD_IRQ_BASE) { | |
626 | /* PCI slot */ | |
627 | imap_off = sabre_pcislot_imap_offset(ino); | |
628 | } else { | |
629 | /* onboard device */ | |
630 | if (ino > SABRE_ONBOARD_IRQ_LAST) { | |
631 | prom_printf("sabre_irq_build: Wacky INO [%x]\n", ino); | |
632 | prom_halt(); | |
633 | } | |
634 | imap_off = sabre_onboard_imap_offset(ino); | |
635 | } | |
636 | ||
637 | /* Now build the IRQ bucket. */ | |
638 | pil = sabre_ino_to_pil(pdev, ino); | |
639 | ||
640 | if (PIL_RESERVED(pil)) | |
641 | BUG(); | |
642 | ||
643 | imap = pbm->controller_regs + imap_off; | |
644 | imap += 4; | |
645 | ||
646 | iclr_off = sabre_iclr_offset(ino); | |
647 | iclr = pbm->controller_regs + iclr_off; | |
648 | iclr += 4; | |
649 | ||
650 | if ((ino & 0x20) == 0) | |
651 | inofixup = ino & 0x03; | |
652 | ||
653 | bucket = __bucket(build_irq(pil, inofixup, iclr, imap)); | |
654 | bucket->flags |= IBF_PCI; | |
655 | ||
656 | if (pdev) { | |
657 | struct pcidev_cookie *pcp = pdev->sysdata; | |
658 | ||
1da177e4 | 659 | if (pdev->bus->number != pcp->pbm->pci_first_busno) { |
088dd1f8 DM |
660 | struct pci_controller_info *p = pcp->pbm->parent; |
661 | struct irq_desc *d = bucket->irq_info; | |
662 | ||
663 | d->pre_handler = sabre_wsync_handler; | |
664 | d->pre_handler_arg1 = pdev; | |
665 | d->pre_handler_arg2 = (void *) | |
666 | p->pbm_A.controller_regs + SABRE_WRSYNC; | |
1da177e4 LT |
667 | } |
668 | } | |
669 | return __irq(bucket); | |
670 | } | |
671 | ||
672 | /* SABRE error handling support. */ | |
673 | static void sabre_check_iommu_error(struct pci_controller_info *p, | |
674 | unsigned long afsr, | |
675 | unsigned long afar) | |
676 | { | |
677 | struct pci_iommu *iommu = p->pbm_A.iommu; | |
678 | unsigned long iommu_tag[16]; | |
679 | unsigned long iommu_data[16]; | |
680 | unsigned long flags; | |
681 | u64 control; | |
682 | int i; | |
683 | ||
684 | spin_lock_irqsave(&iommu->lock, flags); | |
685 | control = sabre_read(iommu->iommu_control); | |
686 | if (control & SABRE_IOMMUCTRL_ERR) { | |
687 | char *type_string; | |
688 | ||
689 | /* Clear the error encountered bit. | |
690 | * NOTE: On Sabre this is write 1 to clear, | |
691 | * which is different from Psycho. | |
692 | */ | |
693 | sabre_write(iommu->iommu_control, control); | |
694 | switch((control & SABRE_IOMMUCTRL_ERRSTS) >> 25UL) { | |
695 | case 1: | |
696 | type_string = "Invalid Error"; | |
697 | break; | |
698 | case 3: | |
699 | type_string = "ECC Error"; | |
700 | break; | |
701 | default: | |
702 | type_string = "Unknown"; | |
703 | break; | |
704 | }; | |
705 | printk("SABRE%d: IOMMU Error, type[%s]\n", | |
706 | p->index, type_string); | |
707 | ||
708 | /* Enter diagnostic mode and probe for error'd | |
709 | * entries in the IOTLB. | |
710 | */ | |
711 | control &= ~(SABRE_IOMMUCTRL_ERRSTS | SABRE_IOMMUCTRL_ERR); | |
712 | sabre_write(iommu->iommu_control, | |
713 | (control | SABRE_IOMMUCTRL_DENAB)); | |
714 | for (i = 0; i < 16; i++) { | |
715 | unsigned long base = p->pbm_A.controller_regs; | |
716 | ||
717 | iommu_tag[i] = | |
718 | sabre_read(base + SABRE_IOMMU_TAG + (i * 8UL)); | |
719 | iommu_data[i] = | |
720 | sabre_read(base + SABRE_IOMMU_DATA + (i * 8UL)); | |
721 | sabre_write(base + SABRE_IOMMU_TAG + (i * 8UL), 0); | |
722 | sabre_write(base + SABRE_IOMMU_DATA + (i * 8UL), 0); | |
723 | } | |
724 | sabre_write(iommu->iommu_control, control); | |
725 | ||
726 | for (i = 0; i < 16; i++) { | |
727 | unsigned long tag, data; | |
728 | ||
729 | tag = iommu_tag[i]; | |
730 | if (!(tag & SABRE_IOMMUTAG_ERR)) | |
731 | continue; | |
732 | ||
733 | data = iommu_data[i]; | |
734 | switch((tag & SABRE_IOMMUTAG_ERRSTS) >> 23UL) { | |
735 | case 1: | |
736 | type_string = "Invalid Error"; | |
737 | break; | |
738 | case 3: | |
739 | type_string = "ECC Error"; | |
740 | break; | |
741 | default: | |
742 | type_string = "Unknown"; | |
743 | break; | |
744 | }; | |
745 | printk("SABRE%d: IOMMU TAG(%d)[RAW(%016lx)error(%s)wr(%d)sz(%dK)vpg(%08lx)]\n", | |
746 | p->index, i, tag, type_string, | |
747 | ((tag & SABRE_IOMMUTAG_WRITE) ? 1 : 0), | |
748 | ((tag & SABRE_IOMMUTAG_SIZE) ? 64 : 8), | |
749 | ((tag & SABRE_IOMMUTAG_VPN) << IOMMU_PAGE_SHIFT)); | |
750 | printk("SABRE%d: IOMMU DATA(%d)[RAW(%016lx)valid(%d)used(%d)cache(%d)ppg(%016lx)\n", | |
751 | p->index, i, data, | |
752 | ((data & SABRE_IOMMUDATA_VALID) ? 1 : 0), | |
753 | ((data & SABRE_IOMMUDATA_USED) ? 1 : 0), | |
754 | ((data & SABRE_IOMMUDATA_CACHE) ? 1 : 0), | |
755 | ((data & SABRE_IOMMUDATA_PPN) << IOMMU_PAGE_SHIFT)); | |
756 | } | |
757 | } | |
758 | spin_unlock_irqrestore(&iommu->lock, flags); | |
759 | } | |
760 | ||
761 | static irqreturn_t sabre_ue_intr(int irq, void *dev_id, struct pt_regs *regs) | |
762 | { | |
763 | struct pci_controller_info *p = dev_id; | |
764 | unsigned long afsr_reg = p->pbm_A.controller_regs + SABRE_UE_AFSR; | |
765 | unsigned long afar_reg = p->pbm_A.controller_regs + SABRE_UECE_AFAR; | |
766 | unsigned long afsr, afar, error_bits; | |
767 | int reported; | |
768 | ||
769 | /* Latch uncorrectable error status. */ | |
770 | afar = sabre_read(afar_reg); | |
771 | afsr = sabre_read(afsr_reg); | |
772 | ||
773 | /* Clear the primary/secondary error status bits. */ | |
774 | error_bits = afsr & | |
775 | (SABRE_UEAFSR_PDRD | SABRE_UEAFSR_PDWR | | |
776 | SABRE_UEAFSR_SDRD | SABRE_UEAFSR_SDWR | | |
777 | SABRE_UEAFSR_SDTE | SABRE_UEAFSR_PDTE); | |
778 | if (!error_bits) | |
779 | return IRQ_NONE; | |
780 | sabre_write(afsr_reg, error_bits); | |
781 | ||
782 | /* Log the error. */ | |
783 | printk("SABRE%d: Uncorrectable Error, primary error type[%s%s]\n", | |
784 | p->index, | |
785 | ((error_bits & SABRE_UEAFSR_PDRD) ? | |
786 | "DMA Read" : | |
787 | ((error_bits & SABRE_UEAFSR_PDWR) ? | |
788 | "DMA Write" : "???")), | |
789 | ((error_bits & SABRE_UEAFSR_PDTE) ? | |
790 | ":Translation Error" : "")); | |
791 | printk("SABRE%d: bytemask[%04lx] dword_offset[%lx] was_block(%d)\n", | |
792 | p->index, | |
793 | (afsr & SABRE_UEAFSR_BMSK) >> 32UL, | |
794 | (afsr & SABRE_UEAFSR_OFF) >> 29UL, | |
795 | ((afsr & SABRE_UEAFSR_BLK) ? 1 : 0)); | |
796 | printk("SABRE%d: UE AFAR [%016lx]\n", p->index, afar); | |
797 | printk("SABRE%d: UE Secondary errors [", p->index); | |
798 | reported = 0; | |
799 | if (afsr & SABRE_UEAFSR_SDRD) { | |
800 | reported++; | |
801 | printk("(DMA Read)"); | |
802 | } | |
803 | if (afsr & SABRE_UEAFSR_SDWR) { | |
804 | reported++; | |
805 | printk("(DMA Write)"); | |
806 | } | |
807 | if (afsr & SABRE_UEAFSR_SDTE) { | |
808 | reported++; | |
809 | printk("(Translation Error)"); | |
810 | } | |
811 | if (!reported) | |
812 | printk("(none)"); | |
813 | printk("]\n"); | |
814 | ||
815 | /* Interrogate IOMMU for error status. */ | |
816 | sabre_check_iommu_error(p, afsr, afar); | |
817 | ||
818 | return IRQ_HANDLED; | |
819 | } | |
820 | ||
821 | static irqreturn_t sabre_ce_intr(int irq, void *dev_id, struct pt_regs *regs) | |
822 | { | |
823 | struct pci_controller_info *p = dev_id; | |
824 | unsigned long afsr_reg = p->pbm_A.controller_regs + SABRE_CE_AFSR; | |
825 | unsigned long afar_reg = p->pbm_A.controller_regs + SABRE_UECE_AFAR; | |
826 | unsigned long afsr, afar, error_bits; | |
827 | int reported; | |
828 | ||
829 | /* Latch error status. */ | |
830 | afar = sabre_read(afar_reg); | |
831 | afsr = sabre_read(afsr_reg); | |
832 | ||
833 | /* Clear primary/secondary error status bits. */ | |
834 | error_bits = afsr & | |
835 | (SABRE_CEAFSR_PDRD | SABRE_CEAFSR_PDWR | | |
836 | SABRE_CEAFSR_SDRD | SABRE_CEAFSR_SDWR); | |
837 | if (!error_bits) | |
838 | return IRQ_NONE; | |
839 | sabre_write(afsr_reg, error_bits); | |
840 | ||
841 | /* Log the error. */ | |
842 | printk("SABRE%d: Correctable Error, primary error type[%s]\n", | |
843 | p->index, | |
844 | ((error_bits & SABRE_CEAFSR_PDRD) ? | |
845 | "DMA Read" : | |
846 | ((error_bits & SABRE_CEAFSR_PDWR) ? | |
847 | "DMA Write" : "???"))); | |
848 | ||
849 | /* XXX Use syndrome and afar to print out module string just like | |
850 | * XXX UDB CE trap handler does... -DaveM | |
851 | */ | |
852 | printk("SABRE%d: syndrome[%02lx] bytemask[%04lx] dword_offset[%lx] " | |
853 | "was_block(%d)\n", | |
854 | p->index, | |
855 | (afsr & SABRE_CEAFSR_ESYND) >> 48UL, | |
856 | (afsr & SABRE_CEAFSR_BMSK) >> 32UL, | |
857 | (afsr & SABRE_CEAFSR_OFF) >> 29UL, | |
858 | ((afsr & SABRE_CEAFSR_BLK) ? 1 : 0)); | |
859 | printk("SABRE%d: CE AFAR [%016lx]\n", p->index, afar); | |
860 | printk("SABRE%d: CE Secondary errors [", p->index); | |
861 | reported = 0; | |
862 | if (afsr & SABRE_CEAFSR_SDRD) { | |
863 | reported++; | |
864 | printk("(DMA Read)"); | |
865 | } | |
866 | if (afsr & SABRE_CEAFSR_SDWR) { | |
867 | reported++; | |
868 | printk("(DMA Write)"); | |
869 | } | |
870 | if (!reported) | |
871 | printk("(none)"); | |
872 | printk("]\n"); | |
873 | ||
874 | return IRQ_HANDLED; | |
875 | } | |
876 | ||
877 | static irqreturn_t sabre_pcierr_intr_other(struct pci_controller_info *p) | |
878 | { | |
879 | unsigned long csr_reg, csr, csr_error_bits; | |
880 | irqreturn_t ret = IRQ_NONE; | |
881 | u16 stat; | |
882 | ||
883 | csr_reg = p->pbm_A.controller_regs + SABRE_PCICTRL; | |
884 | csr = sabre_read(csr_reg); | |
885 | csr_error_bits = | |
886 | csr & SABRE_PCICTRL_SERR; | |
887 | if (csr_error_bits) { | |
888 | /* Clear the errors. */ | |
889 | sabre_write(csr_reg, csr); | |
890 | ||
891 | /* Log 'em. */ | |
892 | if (csr_error_bits & SABRE_PCICTRL_SERR) | |
893 | printk("SABRE%d: PCI SERR signal asserted.\n", | |
894 | p->index); | |
895 | ret = IRQ_HANDLED; | |
896 | } | |
897 | pci_read_config_word(sabre_root_bus->self, | |
898 | PCI_STATUS, &stat); | |
899 | if (stat & (PCI_STATUS_PARITY | | |
900 | PCI_STATUS_SIG_TARGET_ABORT | | |
901 | PCI_STATUS_REC_TARGET_ABORT | | |
902 | PCI_STATUS_REC_MASTER_ABORT | | |
903 | PCI_STATUS_SIG_SYSTEM_ERROR)) { | |
904 | printk("SABRE%d: PCI bus error, PCI_STATUS[%04x]\n", | |
905 | p->index, stat); | |
906 | pci_write_config_word(sabre_root_bus->self, | |
907 | PCI_STATUS, 0xffff); | |
908 | ret = IRQ_HANDLED; | |
909 | } | |
910 | return ret; | |
911 | } | |
912 | ||
913 | static irqreturn_t sabre_pcierr_intr(int irq, void *dev_id, struct pt_regs *regs) | |
914 | { | |
915 | struct pci_controller_info *p = dev_id; | |
916 | unsigned long afsr_reg, afar_reg; | |
917 | unsigned long afsr, afar, error_bits; | |
918 | int reported; | |
919 | ||
920 | afsr_reg = p->pbm_A.controller_regs + SABRE_PIOAFSR; | |
921 | afar_reg = p->pbm_A.controller_regs + SABRE_PIOAFAR; | |
922 | ||
923 | /* Latch error status. */ | |
924 | afar = sabre_read(afar_reg); | |
925 | afsr = sabre_read(afsr_reg); | |
926 | ||
927 | /* Clear primary/secondary error status bits. */ | |
928 | error_bits = afsr & | |
929 | (SABRE_PIOAFSR_PMA | SABRE_PIOAFSR_PTA | | |
930 | SABRE_PIOAFSR_PRTRY | SABRE_PIOAFSR_PPERR | | |
931 | SABRE_PIOAFSR_SMA | SABRE_PIOAFSR_STA | | |
932 | SABRE_PIOAFSR_SRTRY | SABRE_PIOAFSR_SPERR); | |
933 | if (!error_bits) | |
934 | return sabre_pcierr_intr_other(p); | |
935 | sabre_write(afsr_reg, error_bits); | |
936 | ||
937 | /* Log the error. */ | |
938 | printk("SABRE%d: PCI Error, primary error type[%s]\n", | |
939 | p->index, | |
940 | (((error_bits & SABRE_PIOAFSR_PMA) ? | |
941 | "Master Abort" : | |
942 | ((error_bits & SABRE_PIOAFSR_PTA) ? | |
943 | "Target Abort" : | |
944 | ((error_bits & SABRE_PIOAFSR_PRTRY) ? | |
945 | "Excessive Retries" : | |
946 | ((error_bits & SABRE_PIOAFSR_PPERR) ? | |
947 | "Parity Error" : "???")))))); | |
948 | printk("SABRE%d: bytemask[%04lx] was_block(%d)\n", | |
949 | p->index, | |
950 | (afsr & SABRE_PIOAFSR_BMSK) >> 32UL, | |
951 | (afsr & SABRE_PIOAFSR_BLK) ? 1 : 0); | |
952 | printk("SABRE%d: PCI AFAR [%016lx]\n", p->index, afar); | |
953 | printk("SABRE%d: PCI Secondary errors [", p->index); | |
954 | reported = 0; | |
955 | if (afsr & SABRE_PIOAFSR_SMA) { | |
956 | reported++; | |
957 | printk("(Master Abort)"); | |
958 | } | |
959 | if (afsr & SABRE_PIOAFSR_STA) { | |
960 | reported++; | |
961 | printk("(Target Abort)"); | |
962 | } | |
963 | if (afsr & SABRE_PIOAFSR_SRTRY) { | |
964 | reported++; | |
965 | printk("(Excessive Retries)"); | |
966 | } | |
967 | if (afsr & SABRE_PIOAFSR_SPERR) { | |
968 | reported++; | |
969 | printk("(Parity Error)"); | |
970 | } | |
971 | if (!reported) | |
972 | printk("(none)"); | |
973 | printk("]\n"); | |
974 | ||
975 | /* For the error types shown, scan both PCI buses for devices | |
976 | * which have logged that error type. | |
977 | */ | |
978 | ||
979 | /* If we see a Target Abort, this could be the result of an | |
980 | * IOMMU translation error of some sort. It is extremely | |
981 | * useful to log this information as usually it indicates | |
982 | * a bug in the IOMMU support code or a PCI device driver. | |
983 | */ | |
984 | if (error_bits & (SABRE_PIOAFSR_PTA | SABRE_PIOAFSR_STA)) { | |
985 | sabre_check_iommu_error(p, afsr, afar); | |
986 | pci_scan_for_target_abort(p, &p->pbm_A, p->pbm_A.pci_bus); | |
987 | pci_scan_for_target_abort(p, &p->pbm_B, p->pbm_B.pci_bus); | |
988 | } | |
989 | if (error_bits & (SABRE_PIOAFSR_PMA | SABRE_PIOAFSR_SMA)) { | |
990 | pci_scan_for_master_abort(p, &p->pbm_A, p->pbm_A.pci_bus); | |
991 | pci_scan_for_master_abort(p, &p->pbm_B, p->pbm_B.pci_bus); | |
992 | } | |
993 | /* For excessive retries, SABRE/PBM will abort the device | |
994 | * and there is no way to specifically check for excessive | |
995 | * retries in the config space status registers. So what | |
996 | * we hope is that we'll catch it via the master/target | |
997 | * abort events. | |
998 | */ | |
999 | ||
1000 | if (error_bits & (SABRE_PIOAFSR_PPERR | SABRE_PIOAFSR_SPERR)) { | |
1001 | pci_scan_for_parity_error(p, &p->pbm_A, p->pbm_A.pci_bus); | |
1002 | pci_scan_for_parity_error(p, &p->pbm_B, p->pbm_B.pci_bus); | |
1003 | } | |
1004 | ||
1005 | return IRQ_HANDLED; | |
1006 | } | |
1007 | ||
1008 | /* XXX What about PowerFail/PowerManagement??? -DaveM */ | |
1009 | #define SABRE_UE_INO 0x2e | |
1010 | #define SABRE_CE_INO 0x2f | |
1011 | #define SABRE_PCIERR_INO 0x30 | |
1012 | static void __init sabre_register_error_handlers(struct pci_controller_info *p) | |
1013 | { | |
1014 | struct pci_pbm_info *pbm = &p->pbm_A; /* arbitrary */ | |
1015 | unsigned long base = pbm->controller_regs; | |
1016 | unsigned long irq, portid = pbm->portid; | |
1017 | u64 tmp; | |
1018 | ||
1019 | /* We clear the error bits in the appropriate AFSR before | |
1020 | * registering the handler so that we don't get spurious | |
1021 | * interrupts. | |
1022 | */ | |
1023 | sabre_write(base + SABRE_UE_AFSR, | |
1024 | (SABRE_UEAFSR_PDRD | SABRE_UEAFSR_PDWR | | |
1025 | SABRE_UEAFSR_SDRD | SABRE_UEAFSR_SDWR | | |
1026 | SABRE_UEAFSR_SDTE | SABRE_UEAFSR_PDTE)); | |
1027 | irq = sabre_irq_build(pbm, NULL, (portid << 6) | SABRE_UE_INO); | |
1028 | if (request_irq(irq, sabre_ue_intr, | |
1029 | SA_SHIRQ, "SABRE UE", p) < 0) { | |
1030 | prom_printf("SABRE%d: Cannot register UE interrupt.\n", | |
1031 | p->index); | |
1032 | prom_halt(); | |
1033 | } | |
1034 | ||
1035 | sabre_write(base + SABRE_CE_AFSR, | |
1036 | (SABRE_CEAFSR_PDRD | SABRE_CEAFSR_PDWR | | |
1037 | SABRE_CEAFSR_SDRD | SABRE_CEAFSR_SDWR)); | |
1038 | irq = sabre_irq_build(pbm, NULL, (portid << 6) | SABRE_CE_INO); | |
1039 | if (request_irq(irq, sabre_ce_intr, | |
1040 | SA_SHIRQ, "SABRE CE", p) < 0) { | |
1041 | prom_printf("SABRE%d: Cannot register CE interrupt.\n", | |
1042 | p->index); | |
1043 | prom_halt(); | |
1044 | } | |
1045 | ||
1046 | irq = sabre_irq_build(pbm, NULL, (portid << 6) | SABRE_PCIERR_INO); | |
1047 | if (request_irq(irq, sabre_pcierr_intr, | |
1048 | SA_SHIRQ, "SABRE PCIERR", p) < 0) { | |
1049 | prom_printf("SABRE%d: Cannot register PciERR interrupt.\n", | |
1050 | p->index); | |
1051 | prom_halt(); | |
1052 | } | |
1053 | ||
1054 | tmp = sabre_read(base + SABRE_PCICTRL); | |
1055 | tmp |= SABRE_PCICTRL_ERREN; | |
1056 | sabre_write(base + SABRE_PCICTRL, tmp); | |
1057 | } | |
1058 | ||
1059 | static void __init sabre_resource_adjust(struct pci_dev *pdev, | |
1060 | struct resource *res, | |
1061 | struct resource *root) | |
1062 | { | |
1063 | struct pci_pbm_info *pbm = pdev->bus->sysdata; | |
1064 | unsigned long base; | |
1065 | ||
1066 | if (res->flags & IORESOURCE_IO) | |
1067 | base = pbm->controller_regs + SABRE_IOSPACE; | |
1068 | else | |
1069 | base = pbm->controller_regs + SABRE_MEMSPACE; | |
1070 | ||
1071 | res->start += base; | |
1072 | res->end += base; | |
1073 | } | |
1074 | ||
1075 | static void __init sabre_base_address_update(struct pci_dev *pdev, int resource) | |
1076 | { | |
1077 | struct pcidev_cookie *pcp = pdev->sysdata; | |
1078 | struct pci_pbm_info *pbm = pcp->pbm; | |
1079 | struct resource *res; | |
1080 | unsigned long base; | |
1081 | u32 reg; | |
1082 | int where, size, is_64bit; | |
1083 | ||
1084 | res = &pdev->resource[resource]; | |
1085 | if (resource < 6) { | |
1086 | where = PCI_BASE_ADDRESS_0 + (resource * 4); | |
1087 | } else if (resource == PCI_ROM_RESOURCE) { | |
1088 | where = pdev->rom_base_reg; | |
1089 | } else { | |
1090 | /* Somebody might have asked allocation of a non-standard resource */ | |
1091 | return; | |
1092 | } | |
1093 | ||
1094 | is_64bit = 0; | |
1095 | if (res->flags & IORESOURCE_IO) | |
1096 | base = pbm->controller_regs + SABRE_IOSPACE; | |
1097 | else { | |
1098 | base = pbm->controller_regs + SABRE_MEMSPACE; | |
1099 | if ((res->flags & PCI_BASE_ADDRESS_MEM_TYPE_MASK) | |
1100 | == PCI_BASE_ADDRESS_MEM_TYPE_64) | |
1101 | is_64bit = 1; | |
1102 | } | |
1103 | ||
1104 | size = res->end - res->start; | |
1105 | pci_read_config_dword(pdev, where, ®); | |
1106 | reg = ((reg & size) | | |
1107 | (((u32)(res->start - base)) & ~size)); | |
1108 | if (resource == PCI_ROM_RESOURCE) { | |
1109 | reg |= PCI_ROM_ADDRESS_ENABLE; | |
1110 | res->flags |= IORESOURCE_ROM_ENABLE; | |
1111 | } | |
1112 | pci_write_config_dword(pdev, where, reg); | |
1113 | ||
1114 | /* This knows that the upper 32-bits of the address | |
1115 | * must be zero. Our PCI common layer enforces this. | |
1116 | */ | |
1117 | if (is_64bit) | |
1118 | pci_write_config_dword(pdev, where + 4, 0); | |
1119 | } | |
1120 | ||
1121 | static void __init apb_init(struct pci_controller_info *p, struct pci_bus *sabre_bus) | |
1122 | { | |
1123 | struct pci_dev *pdev; | |
1124 | ||
1125 | list_for_each_entry(pdev, &sabre_bus->devices, bus_list) { | |
1126 | ||
1127 | if (pdev->vendor == PCI_VENDOR_ID_SUN && | |
1128 | pdev->device == PCI_DEVICE_ID_SUN_SIMBA) { | |
1129 | u32 word32; | |
1130 | u16 word16; | |
1131 | ||
1132 | sabre_read_pci_cfg(pdev->bus, pdev->devfn, | |
1133 | PCI_COMMAND, 2, &word32); | |
1134 | word16 = (u16) word32; | |
1135 | word16 |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY | | |
1136 | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY | | |
1137 | PCI_COMMAND_IO; | |
1138 | word32 = (u32) word16; | |
1139 | sabre_write_pci_cfg(pdev->bus, pdev->devfn, | |
1140 | PCI_COMMAND, 2, word32); | |
1141 | ||
1142 | /* Status register bits are "write 1 to clear". */ | |
1143 | sabre_write_pci_cfg(pdev->bus, pdev->devfn, | |
1144 | PCI_STATUS, 2, 0xffff); | |
1145 | sabre_write_pci_cfg(pdev->bus, pdev->devfn, | |
1146 | PCI_SEC_STATUS, 2, 0xffff); | |
1147 | ||
1148 | /* Use a primary/seconday latency timer value | |
1149 | * of 64. | |
1150 | */ | |
1151 | sabre_write_pci_cfg(pdev->bus, pdev->devfn, | |
1152 | PCI_LATENCY_TIMER, 1, 64); | |
1153 | sabre_write_pci_cfg(pdev->bus, pdev->devfn, | |
1154 | PCI_SEC_LATENCY_TIMER, 1, 64); | |
1155 | ||
1156 | /* Enable reporting/forwarding of master aborts, | |
1157 | * parity, and SERR. | |
1158 | */ | |
1159 | sabre_write_pci_cfg(pdev->bus, pdev->devfn, | |
1160 | PCI_BRIDGE_CONTROL, 1, | |
1161 | (PCI_BRIDGE_CTL_PARITY | | |
1162 | PCI_BRIDGE_CTL_SERR | | |
1163 | PCI_BRIDGE_CTL_MASTER_ABORT)); | |
1164 | } | |
1165 | } | |
1166 | } | |
1167 | ||
1168 | static struct pcidev_cookie *alloc_bridge_cookie(struct pci_pbm_info *pbm) | |
1169 | { | |
1170 | struct pcidev_cookie *cookie = kmalloc(sizeof(*cookie), GFP_KERNEL); | |
1171 | ||
1172 | if (!cookie) { | |
1173 | prom_printf("SABRE: Critical allocation failure.\n"); | |
1174 | prom_halt(); | |
1175 | } | |
1176 | ||
1177 | /* All we care about is the PBM. */ | |
1178 | memset(cookie, 0, sizeof(*cookie)); | |
1179 | cookie->pbm = pbm; | |
1180 | ||
1181 | return cookie; | |
1182 | } | |
1183 | ||
1184 | static void __init sabre_scan_bus(struct pci_controller_info *p) | |
1185 | { | |
1186 | static int once; | |
1187 | struct pci_bus *sabre_bus, *pbus; | |
1188 | struct pci_pbm_info *pbm; | |
1189 | struct pcidev_cookie *cookie; | |
1190 | int sabres_scanned; | |
1191 | ||
1192 | /* The APB bridge speaks to the Sabre host PCI bridge | |
1193 | * at 66Mhz, but the front side of APB runs at 33Mhz | |
1194 | * for both segments. | |
1195 | */ | |
1196 | p->pbm_A.is_66mhz_capable = 0; | |
1197 | p->pbm_B.is_66mhz_capable = 0; | |
1198 | ||
1199 | /* This driver has not been verified to handle | |
1200 | * multiple SABREs yet, so trap this. | |
1201 | * | |
1202 | * Also note that the SABRE host bridge is hardwired | |
1203 | * to live at bus 0. | |
1204 | */ | |
1205 | if (once != 0) { | |
1206 | prom_printf("SABRE: Multiple controllers unsupported.\n"); | |
1207 | prom_halt(); | |
1208 | } | |
1209 | once++; | |
1210 | ||
1211 | cookie = alloc_bridge_cookie(&p->pbm_A); | |
1212 | ||
1213 | sabre_bus = pci_scan_bus(p->pci_first_busno, | |
1214 | p->pci_ops, | |
1215 | &p->pbm_A); | |
1216 | pci_fixup_host_bridge_self(sabre_bus); | |
1217 | sabre_bus->self->sysdata = cookie; | |
1218 | ||
1219 | sabre_root_bus = sabre_bus; | |
1220 | ||
1221 | apb_init(p, sabre_bus); | |
1222 | ||
1223 | sabres_scanned = 0; | |
1224 | ||
1225 | list_for_each_entry(pbus, &sabre_bus->children, node) { | |
1226 | ||
1227 | if (pbus->number == p->pbm_A.pci_first_busno) { | |
1228 | pbm = &p->pbm_A; | |
1229 | } else if (pbus->number == p->pbm_B.pci_first_busno) { | |
1230 | pbm = &p->pbm_B; | |
1231 | } else | |
1232 | continue; | |
1233 | ||
1234 | cookie = alloc_bridge_cookie(pbm); | |
1235 | pbus->self->sysdata = cookie; | |
1236 | ||
1237 | sabres_scanned++; | |
1238 | ||
1239 | pbus->sysdata = pbm; | |
1240 | pbm->pci_bus = pbus; | |
1241 | pci_fill_in_pbm_cookies(pbus, pbm, pbm->prom_node); | |
1242 | pci_record_assignments(pbm, pbus); | |
1243 | pci_assign_unassigned(pbm, pbus); | |
1244 | pci_fixup_irq(pbm, pbus); | |
1245 | pci_determine_66mhz_disposition(pbm, pbus); | |
1246 | pci_setup_busmastering(pbm, pbus); | |
1247 | } | |
1248 | ||
1249 | if (!sabres_scanned) { | |
1250 | /* Hummingbird, no APBs. */ | |
1251 | pbm = &p->pbm_A; | |
1252 | sabre_bus->sysdata = pbm; | |
1253 | pbm->pci_bus = sabre_bus; | |
1254 | pci_fill_in_pbm_cookies(sabre_bus, pbm, pbm->prom_node); | |
1255 | pci_record_assignments(pbm, sabre_bus); | |
1256 | pci_assign_unassigned(pbm, sabre_bus); | |
1257 | pci_fixup_irq(pbm, sabre_bus); | |
1258 | pci_determine_66mhz_disposition(pbm, sabre_bus); | |
1259 | pci_setup_busmastering(pbm, sabre_bus); | |
1260 | } | |
1261 | ||
1262 | sabre_register_error_handlers(p); | |
1263 | } | |
1264 | ||
1265 | static void __init sabre_iommu_init(struct pci_controller_info *p, | |
1266 | int tsbsize, unsigned long dvma_offset, | |
1267 | u32 dma_mask) | |
1268 | { | |
1269 | struct pci_iommu *iommu = p->pbm_A.iommu; | |
1270 | unsigned long tsbbase, i, order; | |
1271 | u64 control; | |
1272 | ||
1273 | /* Setup initial software IOMMU state. */ | |
1274 | spin_lock_init(&iommu->lock); | |
7c963ad1 | 1275 | iommu->ctx_lowest_free = 1; |
1da177e4 LT |
1276 | |
1277 | /* Register addresses. */ | |
1278 | iommu->iommu_control = p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL; | |
1279 | iommu->iommu_tsbbase = p->pbm_A.controller_regs + SABRE_IOMMU_TSBBASE; | |
1280 | iommu->iommu_flush = p->pbm_A.controller_regs + SABRE_IOMMU_FLUSH; | |
1281 | iommu->write_complete_reg = p->pbm_A.controller_regs + SABRE_WRSYNC; | |
1282 | /* Sabre's IOMMU lacks ctx flushing. */ | |
1283 | iommu->iommu_ctxflush = 0; | |
1284 | ||
1285 | /* Invalidate TLB Entries. */ | |
1286 | control = sabre_read(p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL); | |
1287 | control |= SABRE_IOMMUCTRL_DENAB; | |
1288 | sabre_write(p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL, control); | |
1289 | ||
1290 | for(i = 0; i < 16; i++) { | |
1291 | sabre_write(p->pbm_A.controller_regs + SABRE_IOMMU_TAG + (i * 8UL), 0); | |
1292 | sabre_write(p->pbm_A.controller_regs + SABRE_IOMMU_DATA + (i * 8UL), 0); | |
1293 | } | |
1294 | ||
1295 | /* Leave diag mode enabled for full-flushing done | |
1296 | * in pci_iommu.c | |
1297 | */ | |
1298 | ||
1299 | iommu->dummy_page = __get_free_pages(GFP_KERNEL, 0); | |
1300 | if (!iommu->dummy_page) { | |
1301 | prom_printf("PSYCHO_IOMMU: Error, gfp(dummy_page) failed.\n"); | |
1302 | prom_halt(); | |
1303 | } | |
1304 | memset((void *)iommu->dummy_page, 0, PAGE_SIZE); | |
1305 | iommu->dummy_page_pa = (unsigned long) __pa(iommu->dummy_page); | |
1306 | ||
1307 | tsbbase = __get_free_pages(GFP_KERNEL, order = get_order(tsbsize * 1024 * 8)); | |
1308 | if (!tsbbase) { | |
1309 | prom_printf("SABRE_IOMMU: Error, gfp(tsb) failed.\n"); | |
1310 | prom_halt(); | |
1311 | } | |
1312 | iommu->page_table = (iopte_t *)tsbbase; | |
1313 | iommu->page_table_map_base = dvma_offset; | |
1314 | iommu->dma_addr_mask = dma_mask; | |
1315 | pci_iommu_table_init(iommu, PAGE_SIZE << order); | |
1316 | ||
1317 | sabre_write(p->pbm_A.controller_regs + SABRE_IOMMU_TSBBASE, __pa(tsbbase)); | |
1318 | ||
1319 | control = sabre_read(p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL); | |
1320 | control &= ~(SABRE_IOMMUCTRL_TSBSZ | SABRE_IOMMUCTRL_TBWSZ); | |
1321 | control |= SABRE_IOMMUCTRL_ENAB; | |
1322 | switch(tsbsize) { | |
1323 | case 64: | |
1324 | control |= SABRE_IOMMU_TSBSZ_64K; | |
1325 | iommu->page_table_sz_bits = 16; | |
1326 | break; | |
1327 | case 128: | |
1328 | control |= SABRE_IOMMU_TSBSZ_128K; | |
1329 | iommu->page_table_sz_bits = 17; | |
1330 | break; | |
1331 | default: | |
1332 | prom_printf("iommu_init: Illegal TSB size %d\n", tsbsize); | |
1333 | prom_halt(); | |
1334 | break; | |
1335 | } | |
1336 | sabre_write(p->pbm_A.controller_regs + SABRE_IOMMU_CONTROL, control); | |
1337 | ||
1338 | /* We start with no consistent mappings. */ | |
1339 | iommu->lowest_consistent_map = | |
1340 | 1 << (iommu->page_table_sz_bits - PBM_LOGCLUSTERS); | |
1341 | ||
1342 | for (i = 0; i < PBM_NCLUSTERS; i++) { | |
1343 | iommu->alloc_info[i].flush = 0; | |
1344 | iommu->alloc_info[i].next = 0; | |
1345 | } | |
1346 | } | |
1347 | ||
1348 | static void __init pbm_register_toplevel_resources(struct pci_controller_info *p, | |
1349 | struct pci_pbm_info *pbm) | |
1350 | { | |
1351 | char *name = pbm->name; | |
1352 | unsigned long ibase = p->pbm_A.controller_regs + SABRE_IOSPACE; | |
1353 | unsigned long mbase = p->pbm_A.controller_regs + SABRE_MEMSPACE; | |
1354 | unsigned int devfn; | |
1355 | unsigned long first, last, i; | |
1356 | u8 *addr, map; | |
1357 | ||
1358 | sprintf(name, "SABRE%d PBM%c", | |
1359 | p->index, | |
1360 | (pbm == &p->pbm_A ? 'A' : 'B')); | |
1361 | pbm->io_space.name = pbm->mem_space.name = name; | |
1362 | ||
1363 | devfn = PCI_DEVFN(1, (pbm == &p->pbm_A) ? 0 : 1); | |
1364 | addr = sabre_pci_config_mkaddr(pbm, 0, devfn, APB_IO_ADDRESS_MAP); | |
1365 | map = 0; | |
1366 | pci_config_read8(addr, &map); | |
1367 | ||
1368 | first = 8; | |
1369 | last = 0; | |
1370 | for (i = 0; i < 8; i++) { | |
1371 | if ((map & (1 << i)) != 0) { | |
1372 | if (first > i) | |
1373 | first = i; | |
1374 | if (last < i) | |
1375 | last = i; | |
1376 | } | |
1377 | } | |
1378 | pbm->io_space.start = ibase + (first << 21UL); | |
1379 | pbm->io_space.end = ibase + (last << 21UL) + ((1 << 21UL) - 1); | |
1380 | pbm->io_space.flags = IORESOURCE_IO; | |
1381 | ||
1382 | addr = sabre_pci_config_mkaddr(pbm, 0, devfn, APB_MEM_ADDRESS_MAP); | |
1383 | map = 0; | |
1384 | pci_config_read8(addr, &map); | |
1385 | ||
1386 | first = 8; | |
1387 | last = 0; | |
1388 | for (i = 0; i < 8; i++) { | |
1389 | if ((map & (1 << i)) != 0) { | |
1390 | if (first > i) | |
1391 | first = i; | |
1392 | if (last < i) | |
1393 | last = i; | |
1394 | } | |
1395 | } | |
1396 | pbm->mem_space.start = mbase + (first << 29UL); | |
1397 | pbm->mem_space.end = mbase + (last << 29UL) + ((1 << 29UL) - 1); | |
1398 | pbm->mem_space.flags = IORESOURCE_MEM; | |
1399 | ||
1400 | if (request_resource(&ioport_resource, &pbm->io_space) < 0) { | |
1401 | prom_printf("Cannot register PBM-%c's IO space.\n", | |
1402 | (pbm == &p->pbm_A ? 'A' : 'B')); | |
1403 | prom_halt(); | |
1404 | } | |
1405 | if (request_resource(&iomem_resource, &pbm->mem_space) < 0) { | |
1406 | prom_printf("Cannot register PBM-%c's MEM space.\n", | |
1407 | (pbm == &p->pbm_A ? 'A' : 'B')); | |
1408 | prom_halt(); | |
1409 | } | |
1410 | ||
1411 | /* Register legacy regions if this PBM covers that area. */ | |
1412 | if (pbm->io_space.start == ibase && | |
1413 | pbm->mem_space.start == mbase) | |
1414 | pci_register_legacy_regions(&pbm->io_space, | |
1415 | &pbm->mem_space); | |
1416 | } | |
1417 | ||
1418 | static void __init sabre_pbm_init(struct pci_controller_info *p, int sabre_node, u32 dma_begin) | |
1419 | { | |
1420 | struct pci_pbm_info *pbm; | |
1421 | char namebuf[128]; | |
1422 | u32 busrange[2]; | |
1423 | int node, simbas_found; | |
1424 | ||
1425 | simbas_found = 0; | |
1426 | node = prom_getchild(sabre_node); | |
1427 | while ((node = prom_searchsiblings(node, "pci")) != 0) { | |
1428 | int err; | |
1429 | ||
1430 | err = prom_getproperty(node, "model", namebuf, sizeof(namebuf)); | |
1431 | if ((err <= 0) || strncmp(namebuf, "SUNW,simba", err)) | |
1432 | goto next_pci; | |
1433 | ||
1434 | err = prom_getproperty(node, "bus-range", | |
1435 | (char *)&busrange[0], sizeof(busrange)); | |
1436 | if (err == 0 || err == -1) { | |
1437 | prom_printf("APB: Error, cannot get PCI bus-range.\n"); | |
1438 | prom_halt(); | |
1439 | } | |
1440 | ||
1441 | simbas_found++; | |
1442 | if (busrange[0] == 1) | |
1443 | pbm = &p->pbm_B; | |
1444 | else | |
1445 | pbm = &p->pbm_A; | |
1446 | pbm->chip_type = PBM_CHIP_TYPE_SABRE; | |
1447 | pbm->parent = p; | |
1448 | pbm->prom_node = node; | |
1449 | pbm->pci_first_slot = 1; | |
1450 | pbm->pci_first_busno = busrange[0]; | |
1451 | pbm->pci_last_busno = busrange[1]; | |
1452 | ||
1453 | prom_getstring(node, "name", pbm->prom_name, sizeof(pbm->prom_name)); | |
1454 | err = prom_getproperty(node, "ranges", | |
1455 | (char *)pbm->pbm_ranges, | |
1456 | sizeof(pbm->pbm_ranges)); | |
1457 | if (err != -1) | |
1458 | pbm->num_pbm_ranges = | |
1459 | (err / sizeof(struct linux_prom_pci_ranges)); | |
1460 | else | |
1461 | pbm->num_pbm_ranges = 0; | |
1462 | ||
1463 | err = prom_getproperty(node, "interrupt-map", | |
1464 | (char *)pbm->pbm_intmap, | |
1465 | sizeof(pbm->pbm_intmap)); | |
1466 | if (err != -1) { | |
1467 | pbm->num_pbm_intmap = (err / sizeof(struct linux_prom_pci_intmap)); | |
1468 | err = prom_getproperty(node, "interrupt-map-mask", | |
1469 | (char *)&pbm->pbm_intmask, | |
1470 | sizeof(pbm->pbm_intmask)); | |
1471 | if (err == -1) { | |
1472 | prom_printf("APB: Fatal error, no interrupt-map-mask.\n"); | |
1473 | prom_halt(); | |
1474 | } | |
1475 | } else { | |
1476 | pbm->num_pbm_intmap = 0; | |
1477 | memset(&pbm->pbm_intmask, 0, sizeof(pbm->pbm_intmask)); | |
1478 | } | |
1479 | ||
1480 | pbm_register_toplevel_resources(p, pbm); | |
1481 | ||
1482 | next_pci: | |
1483 | node = prom_getsibling(node); | |
1484 | if (!node) | |
1485 | break; | |
1486 | } | |
1487 | if (simbas_found == 0) { | |
1488 | int err; | |
1489 | ||
1490 | /* No APBs underneath, probably this is a hummingbird | |
1491 | * system. | |
1492 | */ | |
1493 | pbm = &p->pbm_A; | |
1494 | pbm->parent = p; | |
1495 | pbm->prom_node = sabre_node; | |
1496 | pbm->pci_first_busno = p->pci_first_busno; | |
1497 | pbm->pci_last_busno = p->pci_last_busno; | |
1498 | ||
1499 | prom_getstring(sabre_node, "name", pbm->prom_name, sizeof(pbm->prom_name)); | |
1500 | err = prom_getproperty(sabre_node, "ranges", | |
1501 | (char *) pbm->pbm_ranges, | |
1502 | sizeof(pbm->pbm_ranges)); | |
1503 | if (err != -1) | |
1504 | pbm->num_pbm_ranges = | |
1505 | (err / sizeof(struct linux_prom_pci_ranges)); | |
1506 | else | |
1507 | pbm->num_pbm_ranges = 0; | |
1508 | ||
1509 | err = prom_getproperty(sabre_node, "interrupt-map", | |
1510 | (char *) pbm->pbm_intmap, | |
1511 | sizeof(pbm->pbm_intmap)); | |
1512 | ||
1513 | if (err != -1) { | |
1514 | pbm->num_pbm_intmap = (err / sizeof(struct linux_prom_pci_intmap)); | |
1515 | err = prom_getproperty(sabre_node, "interrupt-map-mask", | |
1516 | (char *)&pbm->pbm_intmask, | |
1517 | sizeof(pbm->pbm_intmask)); | |
1518 | if (err == -1) { | |
1519 | prom_printf("Hummingbird: Fatal error, no interrupt-map-mask.\n"); | |
1520 | prom_halt(); | |
1521 | } | |
1522 | } else { | |
1523 | pbm->num_pbm_intmap = 0; | |
1524 | memset(&pbm->pbm_intmask, 0, sizeof(pbm->pbm_intmask)); | |
1525 | } | |
1526 | ||
1527 | ||
1528 | sprintf(pbm->name, "SABRE%d PBM%c", p->index, | |
1529 | (pbm == &p->pbm_A ? 'A' : 'B')); | |
1530 | pbm->io_space.name = pbm->mem_space.name = pbm->name; | |
1531 | ||
1532 | /* Hack up top-level resources. */ | |
1533 | pbm->io_space.start = p->pbm_A.controller_regs + SABRE_IOSPACE; | |
1534 | pbm->io_space.end = pbm->io_space.start + (1UL << 24) - 1UL; | |
1535 | pbm->io_space.flags = IORESOURCE_IO; | |
1536 | ||
1537 | pbm->mem_space.start = p->pbm_A.controller_regs + SABRE_MEMSPACE; | |
1538 | pbm->mem_space.end = pbm->mem_space.start + (unsigned long)dma_begin - 1UL; | |
1539 | pbm->mem_space.flags = IORESOURCE_MEM; | |
1540 | ||
1541 | if (request_resource(&ioport_resource, &pbm->io_space) < 0) { | |
1542 | prom_printf("Cannot register Hummingbird's IO space.\n"); | |
1543 | prom_halt(); | |
1544 | } | |
1545 | if (request_resource(&iomem_resource, &pbm->mem_space) < 0) { | |
1546 | prom_printf("Cannot register Hummingbird's MEM space.\n"); | |
1547 | prom_halt(); | |
1548 | } | |
1549 | ||
1550 | pci_register_legacy_regions(&pbm->io_space, | |
1551 | &pbm->mem_space); | |
1552 | } | |
1553 | } | |
1554 | ||
1555 | void __init sabre_init(int pnode, char *model_name) | |
1556 | { | |
1557 | struct linux_prom64_registers pr_regs[2]; | |
1558 | struct pci_controller_info *p; | |
1559 | struct pci_iommu *iommu; | |
1560 | int tsbsize, err; | |
1561 | u32 busrange[2]; | |
1562 | u32 vdma[2]; | |
1563 | u32 upa_portid, dma_mask; | |
1564 | u64 clear_irq; | |
1565 | ||
1566 | hummingbird_p = 0; | |
1567 | if (!strcmp(model_name, "pci108e,a001")) | |
1568 | hummingbird_p = 1; | |
1569 | else if (!strcmp(model_name, "SUNW,sabre")) { | |
1570 | char compat[64]; | |
1571 | ||
1572 | if (prom_getproperty(pnode, "compatible", | |
1573 | compat, sizeof(compat)) > 0 && | |
1574 | !strcmp(compat, "pci108e,a001")) { | |
1575 | hummingbird_p = 1; | |
1576 | } else { | |
1577 | int cpu_node; | |
1578 | ||
1579 | /* Of course, Sun has to encode things a thousand | |
1580 | * different ways, inconsistently. | |
1581 | */ | |
1582 | cpu_find_by_instance(0, &cpu_node, NULL); | |
1583 | if (prom_getproperty(cpu_node, "name", | |
1584 | compat, sizeof(compat)) > 0 && | |
1585 | !strcmp(compat, "SUNW,UltraSPARC-IIe")) | |
1586 | hummingbird_p = 1; | |
1587 | } | |
1588 | } | |
1589 | ||
1590 | p = kmalloc(sizeof(*p), GFP_ATOMIC); | |
1591 | if (!p) { | |
1592 | prom_printf("SABRE: Error, kmalloc(pci_controller_info) failed.\n"); | |
1593 | prom_halt(); | |
1594 | } | |
1595 | memset(p, 0, sizeof(*p)); | |
1596 | ||
1597 | iommu = kmalloc(sizeof(*iommu), GFP_ATOMIC); | |
1598 | if (!iommu) { | |
1599 | prom_printf("SABRE: Error, kmalloc(pci_iommu) failed.\n"); | |
1600 | prom_halt(); | |
1601 | } | |
1602 | memset(iommu, 0, sizeof(*iommu)); | |
1603 | p->pbm_A.iommu = p->pbm_B.iommu = iommu; | |
1604 | ||
1605 | upa_portid = prom_getintdefault(pnode, "upa-portid", 0xff); | |
1606 | ||
1607 | p->next = pci_controller_root; | |
1608 | pci_controller_root = p; | |
1609 | ||
1610 | p->pbm_A.portid = upa_portid; | |
1611 | p->pbm_B.portid = upa_portid; | |
1612 | p->index = pci_num_controllers++; | |
1613 | p->pbms_same_domain = 1; | |
1614 | p->scan_bus = sabre_scan_bus; | |
1615 | p->irq_build = sabre_irq_build; | |
1616 | p->base_address_update = sabre_base_address_update; | |
1617 | p->resource_adjust = sabre_resource_adjust; | |
1618 | p->pci_ops = &sabre_ops; | |
1619 | ||
1620 | /* | |
1621 | * Map in SABRE register set and report the presence of this SABRE. | |
1622 | */ | |
1623 | err = prom_getproperty(pnode, "reg", | |
1624 | (char *)&pr_regs[0], sizeof(pr_regs)); | |
1625 | if(err == 0 || err == -1) { | |
1626 | prom_printf("SABRE: Error, cannot get U2P registers " | |
1627 | "from PROM.\n"); | |
1628 | prom_halt(); | |
1629 | } | |
1630 | ||
1631 | /* | |
1632 | * First REG in property is base of entire SABRE register space. | |
1633 | */ | |
1634 | p->pbm_A.controller_regs = pr_regs[0].phys_addr; | |
1635 | p->pbm_B.controller_regs = pr_regs[0].phys_addr; | |
1da177e4 | 1636 | |
088dd1f8 DM |
1637 | printk("PCI: Found SABRE, main regs at %016lx\n", |
1638 | p->pbm_A.controller_regs); | |
1da177e4 LT |
1639 | |
1640 | /* Clear interrupts */ | |
1641 | ||
1642 | /* PCI first */ | |
1643 | for (clear_irq = SABRE_ICLR_A_SLOT0; clear_irq < SABRE_ICLR_B_SLOT0 + 0x80; clear_irq += 8) | |
1644 | sabre_write(p->pbm_A.controller_regs + clear_irq, 0x0UL); | |
1645 | ||
1646 | /* Then OBIO */ | |
1647 | for (clear_irq = SABRE_ICLR_SCSI; clear_irq < SABRE_ICLR_SCSI + 0x80; clear_irq += 8) | |
1648 | sabre_write(p->pbm_A.controller_regs + clear_irq, 0x0UL); | |
1649 | ||
1650 | /* Error interrupts are enabled later after the bus scan. */ | |
1651 | sabre_write(p->pbm_A.controller_regs + SABRE_PCICTRL, | |
1652 | (SABRE_PCICTRL_MRLEN | SABRE_PCICTRL_SERR | | |
1653 | SABRE_PCICTRL_ARBPARK | SABRE_PCICTRL_AEN)); | |
1654 | ||
1655 | /* Now map in PCI config space for entire SABRE. */ | |
1656 | p->pbm_A.config_space = p->pbm_B.config_space = | |
1657 | (p->pbm_A.controller_regs + SABRE_CONFIGSPACE); | |
1658 | printk("SABRE: Shared PCI config space at %016lx\n", | |
1659 | p->pbm_A.config_space); | |
1660 | ||
1661 | err = prom_getproperty(pnode, "virtual-dma", | |
1662 | (char *)&vdma[0], sizeof(vdma)); | |
1663 | if(err == 0 || err == -1) { | |
1664 | prom_printf("SABRE: Error, cannot get virtual-dma property " | |
1665 | "from PROM.\n"); | |
1666 | prom_halt(); | |
1667 | } | |
1668 | ||
1669 | dma_mask = vdma[0]; | |
1670 | switch(vdma[1]) { | |
1671 | case 0x20000000: | |
1672 | dma_mask |= 0x1fffffff; | |
1673 | tsbsize = 64; | |
1674 | break; | |
1675 | case 0x40000000: | |
1676 | dma_mask |= 0x3fffffff; | |
1677 | tsbsize = 128; | |
1678 | break; | |
1679 | ||
1680 | case 0x80000000: | |
1681 | dma_mask |= 0x7fffffff; | |
1682 | tsbsize = 128; | |
1683 | break; | |
1684 | default: | |
1685 | prom_printf("SABRE: strange virtual-dma size.\n"); | |
1686 | prom_halt(); | |
1687 | } | |
1688 | ||
1689 | sabre_iommu_init(p, tsbsize, vdma[0], dma_mask); | |
1690 | ||
1691 | printk("SABRE: DVMA at %08x [%08x]\n", vdma[0], vdma[1]); | |
1692 | ||
1693 | err = prom_getproperty(pnode, "bus-range", | |
1694 | (char *)&busrange[0], sizeof(busrange)); | |
1695 | if(err == 0 || err == -1) { | |
1696 | prom_printf("SABRE: Error, cannot get PCI bus-range " | |
1697 | " from PROM.\n"); | |
1698 | prom_halt(); | |
1699 | } | |
1700 | ||
1701 | p->pci_first_busno = busrange[0]; | |
1702 | p->pci_last_busno = busrange[1]; | |
1703 | ||
1704 | /* | |
1705 | * Look for APB underneath. | |
1706 | */ | |
1707 | sabre_pbm_init(p, pnode, vdma[0]); | |
1708 | } |