Commit | Line | Data |
---|---|---|
b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
bade5622 DM |
2 | /* pci_sun4v_asm: Hypervisor calls for PCI support. |
3 | * | |
fefbbc73 | 4 | * Copyright (C) 2006, 2008 David S. Miller <davem@davemloft.net> |
bade5622 DM |
5 | */ |
6 | ||
fefbbc73 | 7 | #include <linux/linkage.h> |
bade5622 DM |
8 | #include <asm/hypervisor.h> |
9 | ||
bade5622 DM |
10 | /* %o0: devhandle |
11 | * %o1: tsbid | |
12 | * %o2: num ttes | |
13 | * %o3: io_attributes | |
14 | * %o4: io_page_list phys address | |
15 | * | |
6a32fd4d DM |
16 | * returns %o0: -status if status was non-zero, else |
17 | * %o0: num pages mapped | |
bade5622 | 18 | */ |
fefbbc73 | 19 | ENTRY(pci_sun4v_iommu_map) |
6a32fd4d | 20 | mov %o5, %g1 |
18397944 | 21 | mov HV_FAST_PCI_IOMMU_MAP, %o5 |
bade5622 | 22 | ta HV_FAST_TRAP |
6a32fd4d DM |
23 | brnz,pn %o0, 1f |
24 | sub %g0, %o0, %o0 | |
25 | mov %o1, %o0 | |
26 | 1: retl | |
27 | nop | |
fefbbc73 | 28 | ENDPROC(pci_sun4v_iommu_map) |
bade5622 DM |
29 | |
30 | /* %o0: devhandle | |
31 | * %o1: tsbid | |
32 | * %o2: num ttes | |
33 | * | |
34 | * returns %o0: num ttes demapped | |
35 | */ | |
fefbbc73 | 36 | ENTRY(pci_sun4v_iommu_demap) |
18397944 | 37 | mov HV_FAST_PCI_IOMMU_DEMAP, %o5 |
bade5622 DM |
38 | ta HV_FAST_TRAP |
39 | retl | |
40 | mov %o1, %o0 | |
fefbbc73 | 41 | ENDPROC(pci_sun4v_iommu_demap) |
7eae642f | 42 | |
18397944 DM |
43 | /* %o0: devhandle |
44 | * %o1: tsbid | |
45 | * %o2: &io_attributes | |
46 | * %o3: &real_address | |
47 | * | |
48 | * returns %o0: status | |
49 | */ | |
fefbbc73 | 50 | ENTRY(pci_sun4v_iommu_getmap) |
18397944 DM |
51 | mov %o2, %o4 |
52 | mov HV_FAST_PCI_IOMMU_GETMAP, %o5 | |
53 | ta HV_FAST_TRAP | |
54 | stx %o1, [%o4] | |
55 | stx %o2, [%o3] | |
56 | retl | |
57 | mov %o0, %o0 | |
fefbbc73 | 58 | ENDPROC(pci_sun4v_iommu_getmap) |
18397944 | 59 | |
7eae642f DM |
60 | /* %o0: devhandle |
61 | * %o1: pci_device | |
62 | * %o2: pci_config_offset | |
63 | * %o3: size | |
64 | * | |
65 | * returns %o0: data | |
66 | * | |
67 | * If there is an error, the data will be returned | |
68 | * as all 1's. | |
69 | */ | |
fefbbc73 | 70 | ENTRY(pci_sun4v_config_get) |
18397944 | 71 | mov HV_FAST_PCI_CONFIG_GET, %o5 |
7eae642f DM |
72 | ta HV_FAST_TRAP |
73 | brnz,a,pn %o1, 1f | |
74 | mov -1, %o2 | |
75 | 1: retl | |
76 | mov %o2, %o0 | |
fefbbc73 | 77 | ENDPROC(pci_sun4v_config_get) |
7eae642f DM |
78 | |
79 | /* %o0: devhandle | |
80 | * %o1: pci_device | |
81 | * %o2: pci_config_offset | |
82 | * %o3: size | |
83 | * %o4: data | |
84 | * | |
85 | * returns %o0: status | |
86 | * | |
87 | * status will be zero if the operation completed | |
88 | * successfully, else -1 if not | |
89 | */ | |
fefbbc73 | 90 | ENTRY(pci_sun4v_config_put) |
18397944 | 91 | mov HV_FAST_PCI_CONFIG_PUT, %o5 |
7eae642f DM |
92 | ta HV_FAST_TRAP |
93 | brnz,a,pn %o1, 1f | |
94 | mov -1, %o1 | |
95 | 1: retl | |
96 | mov %o1, %o0 | |
fefbbc73 | 97 | ENDPROC(pci_sun4v_config_put) |
35a17eb6 DM |
98 | |
99 | /* %o0: devhandle | |
100 | * %o1: msiqid | |
101 | * %o2: msiq phys address | |
102 | * %o3: num entries | |
103 | * | |
104 | * returns %o0: status | |
105 | * | |
106 | * status will be zero if the operation completed | |
107 | * successfully, else -1 if not | |
108 | */ | |
fefbbc73 | 109 | ENTRY(pci_sun4v_msiq_conf) |
35a17eb6 DM |
110 | mov HV_FAST_PCI_MSIQ_CONF, %o5 |
111 | ta HV_FAST_TRAP | |
112 | retl | |
113 | mov %o0, %o0 | |
fefbbc73 | 114 | ENDPROC(pci_sun4v_msiq_conf) |
35a17eb6 DM |
115 | |
116 | /* %o0: devhandle | |
117 | * %o1: msiqid | |
118 | * %o2: &msiq_phys_addr | |
119 | * %o3: &msiq_num_entries | |
120 | * | |
121 | * returns %o0: status | |
122 | */ | |
fefbbc73 | 123 | ENTRY(pci_sun4v_msiq_info) |
35a17eb6 DM |
124 | mov %o2, %o4 |
125 | mov HV_FAST_PCI_MSIQ_INFO, %o5 | |
126 | ta HV_FAST_TRAP | |
127 | stx %o1, [%o4] | |
128 | stx %o2, [%o3] | |
129 | retl | |
130 | mov %o0, %o0 | |
fefbbc73 | 131 | ENDPROC(pci_sun4v_msiq_info) |
35a17eb6 DM |
132 | |
133 | /* %o0: devhandle | |
134 | * %o1: msiqid | |
135 | * %o2: &valid | |
136 | * | |
137 | * returns %o0: status | |
138 | */ | |
fefbbc73 | 139 | ENTRY(pci_sun4v_msiq_getvalid) |
35a17eb6 DM |
140 | mov HV_FAST_PCI_MSIQ_GETVALID, %o5 |
141 | ta HV_FAST_TRAP | |
142 | stx %o1, [%o2] | |
143 | retl | |
144 | mov %o0, %o0 | |
fefbbc73 | 145 | ENDPROC(pci_sun4v_msiq_getvalid) |
35a17eb6 DM |
146 | |
147 | /* %o0: devhandle | |
148 | * %o1: msiqid | |
149 | * %o2: valid | |
150 | * | |
151 | * returns %o0: status | |
152 | */ | |
fefbbc73 | 153 | ENTRY(pci_sun4v_msiq_setvalid) |
35a17eb6 DM |
154 | mov HV_FAST_PCI_MSIQ_SETVALID, %o5 |
155 | ta HV_FAST_TRAP | |
156 | retl | |
157 | mov %o0, %o0 | |
fefbbc73 | 158 | ENDPROC(pci_sun4v_msiq_setvalid) |
35a17eb6 DM |
159 | |
160 | /* %o0: devhandle | |
161 | * %o1: msiqid | |
162 | * %o2: &state | |
163 | * | |
164 | * returns %o0: status | |
165 | */ | |
fefbbc73 | 166 | ENTRY(pci_sun4v_msiq_getstate) |
35a17eb6 DM |
167 | mov HV_FAST_PCI_MSIQ_GETSTATE, %o5 |
168 | ta HV_FAST_TRAP | |
169 | stx %o1, [%o2] | |
170 | retl | |
171 | mov %o0, %o0 | |
fefbbc73 | 172 | ENDPROC(pci_sun4v_msiq_getstate) |
35a17eb6 DM |
173 | |
174 | /* %o0: devhandle | |
175 | * %o1: msiqid | |
176 | * %o2: state | |
177 | * | |
178 | * returns %o0: status | |
179 | */ | |
fefbbc73 | 180 | ENTRY(pci_sun4v_msiq_setstate) |
35a17eb6 DM |
181 | mov HV_FAST_PCI_MSIQ_SETSTATE, %o5 |
182 | ta HV_FAST_TRAP | |
183 | retl | |
184 | mov %o0, %o0 | |
fefbbc73 | 185 | ENDPROC(pci_sun4v_msiq_setstate) |
35a17eb6 DM |
186 | |
187 | /* %o0: devhandle | |
188 | * %o1: msiqid | |
189 | * %o2: &head | |
190 | * | |
191 | * returns %o0: status | |
192 | */ | |
fefbbc73 | 193 | ENTRY(pci_sun4v_msiq_gethead) |
35a17eb6 DM |
194 | mov HV_FAST_PCI_MSIQ_GETHEAD, %o5 |
195 | ta HV_FAST_TRAP | |
196 | stx %o1, [%o2] | |
197 | retl | |
198 | mov %o0, %o0 | |
fefbbc73 | 199 | ENDPROC(pci_sun4v_msiq_gethead) |
35a17eb6 DM |
200 | |
201 | /* %o0: devhandle | |
202 | * %o1: msiqid | |
203 | * %o2: head | |
204 | * | |
205 | * returns %o0: status | |
206 | */ | |
fefbbc73 | 207 | ENTRY(pci_sun4v_msiq_sethead) |
35a17eb6 DM |
208 | mov HV_FAST_PCI_MSIQ_SETHEAD, %o5 |
209 | ta HV_FAST_TRAP | |
210 | retl | |
211 | mov %o0, %o0 | |
fefbbc73 | 212 | ENDPROC(pci_sun4v_msiq_sethead) |
35a17eb6 DM |
213 | |
214 | /* %o0: devhandle | |
215 | * %o1: msiqid | |
216 | * %o2: &tail | |
217 | * | |
218 | * returns %o0: status | |
219 | */ | |
fefbbc73 | 220 | ENTRY(pci_sun4v_msiq_gettail) |
35a17eb6 DM |
221 | mov HV_FAST_PCI_MSIQ_GETTAIL, %o5 |
222 | ta HV_FAST_TRAP | |
223 | stx %o1, [%o2] | |
224 | retl | |
225 | mov %o0, %o0 | |
fefbbc73 | 226 | ENDPROC(pci_sun4v_msiq_gettail) |
35a17eb6 DM |
227 | |
228 | /* %o0: devhandle | |
229 | * %o1: msinum | |
230 | * %o2: &valid | |
231 | * | |
232 | * returns %o0: status | |
233 | */ | |
fefbbc73 | 234 | ENTRY(pci_sun4v_msi_getvalid) |
35a17eb6 DM |
235 | mov HV_FAST_PCI_MSI_GETVALID, %o5 |
236 | ta HV_FAST_TRAP | |
237 | stx %o1, [%o2] | |
238 | retl | |
239 | mov %o0, %o0 | |
fefbbc73 | 240 | ENDPROC(pci_sun4v_msi_getvalid) |
35a17eb6 DM |
241 | |
242 | /* %o0: devhandle | |
243 | * %o1: msinum | |
244 | * %o2: valid | |
245 | * | |
246 | * returns %o0: status | |
247 | */ | |
fefbbc73 | 248 | ENTRY(pci_sun4v_msi_setvalid) |
35a17eb6 DM |
249 | mov HV_FAST_PCI_MSI_SETVALID, %o5 |
250 | ta HV_FAST_TRAP | |
251 | retl | |
252 | mov %o0, %o0 | |
fefbbc73 | 253 | ENDPROC(pci_sun4v_msi_setvalid) |
35a17eb6 DM |
254 | |
255 | /* %o0: devhandle | |
256 | * %o1: msinum | |
257 | * %o2: &msiq | |
258 | * | |
259 | * returns %o0: status | |
260 | */ | |
fefbbc73 | 261 | ENTRY(pci_sun4v_msi_getmsiq) |
35a17eb6 DM |
262 | mov HV_FAST_PCI_MSI_GETMSIQ, %o5 |
263 | ta HV_FAST_TRAP | |
264 | stx %o1, [%o2] | |
265 | retl | |
266 | mov %o0, %o0 | |
fefbbc73 | 267 | ENDPROC(pci_sun4v_msi_getmsiq) |
35a17eb6 DM |
268 | |
269 | /* %o0: devhandle | |
270 | * %o1: msinum | |
271 | * %o2: msitype | |
272 | * %o3: msiq | |
273 | * | |
274 | * returns %o0: status | |
275 | */ | |
fefbbc73 | 276 | ENTRY(pci_sun4v_msi_setmsiq) |
35a17eb6 DM |
277 | mov HV_FAST_PCI_MSI_SETMSIQ, %o5 |
278 | ta HV_FAST_TRAP | |
279 | retl | |
280 | mov %o0, %o0 | |
fefbbc73 | 281 | ENDPROC(pci_sun4v_msi_setmsiq) |
35a17eb6 DM |
282 | |
283 | /* %o0: devhandle | |
284 | * %o1: msinum | |
285 | * %o2: &state | |
286 | * | |
287 | * returns %o0: status | |
288 | */ | |
fefbbc73 | 289 | ENTRY(pci_sun4v_msi_getstate) |
35a17eb6 DM |
290 | mov HV_FAST_PCI_MSI_GETSTATE, %o5 |
291 | ta HV_FAST_TRAP | |
292 | stx %o1, [%o2] | |
293 | retl | |
294 | mov %o0, %o0 | |
fefbbc73 | 295 | ENDPROC(pci_sun4v_msi_getstate) |
35a17eb6 DM |
296 | |
297 | /* %o0: devhandle | |
298 | * %o1: msinum | |
299 | * %o2: state | |
300 | * | |
301 | * returns %o0: status | |
302 | */ | |
fefbbc73 | 303 | ENTRY(pci_sun4v_msi_setstate) |
35a17eb6 DM |
304 | mov HV_FAST_PCI_MSI_SETSTATE, %o5 |
305 | ta HV_FAST_TRAP | |
306 | retl | |
307 | mov %o0, %o0 | |
fefbbc73 | 308 | ENDPROC(pci_sun4v_msi_setstate) |
35a17eb6 DM |
309 | |
310 | /* %o0: devhandle | |
311 | * %o1: msinum | |
312 | * %o2: &msiq | |
313 | * | |
314 | * returns %o0: status | |
315 | */ | |
fefbbc73 | 316 | ENTRY(pci_sun4v_msg_getmsiq) |
35a17eb6 DM |
317 | mov HV_FAST_PCI_MSG_GETMSIQ, %o5 |
318 | ta HV_FAST_TRAP | |
319 | stx %o1, [%o2] | |
320 | retl | |
321 | mov %o0, %o0 | |
fefbbc73 | 322 | ENDPROC(pci_sun4v_msg_getmsiq) |
35a17eb6 DM |
323 | |
324 | /* %o0: devhandle | |
325 | * %o1: msinum | |
326 | * %o2: msiq | |
327 | * | |
328 | * returns %o0: status | |
329 | */ | |
fefbbc73 | 330 | ENTRY(pci_sun4v_msg_setmsiq) |
35a17eb6 DM |
331 | mov HV_FAST_PCI_MSG_SETMSIQ, %o5 |
332 | ta HV_FAST_TRAP | |
333 | retl | |
334 | mov %o0, %o0 | |
fefbbc73 | 335 | ENDPROC(pci_sun4v_msg_setmsiq) |
35a17eb6 DM |
336 | |
337 | /* %o0: devhandle | |
338 | * %o1: msinum | |
339 | * %o2: &valid | |
340 | * | |
341 | * returns %o0: status | |
342 | */ | |
fefbbc73 | 343 | ENTRY(pci_sun4v_msg_getvalid) |
35a17eb6 DM |
344 | mov HV_FAST_PCI_MSG_GETVALID, %o5 |
345 | ta HV_FAST_TRAP | |
346 | stx %o1, [%o2] | |
347 | retl | |
348 | mov %o0, %o0 | |
fefbbc73 | 349 | ENDPROC(pci_sun4v_msg_getvalid) |
35a17eb6 DM |
350 | |
351 | /* %o0: devhandle | |
352 | * %o1: msinum | |
353 | * %o2: valid | |
354 | * | |
355 | * returns %o0: status | |
356 | */ | |
fefbbc73 | 357 | ENTRY(pci_sun4v_msg_setvalid) |
35a17eb6 DM |
358 | mov HV_FAST_PCI_MSG_SETVALID, %o5 |
359 | ta HV_FAST_TRAP | |
360 | retl | |
361 | mov %o0, %o0 | |
fefbbc73 | 362 | ENDPROC(pci_sun4v_msg_setvalid) |
35a17eb6 | 363 | |
f0248c15 TD |
364 | /* |
365 | * %o0: devhandle | |
366 | * %o1: r_addr | |
367 | * %o2: size | |
368 | * %o3: pagesize | |
369 | * %o4: virt | |
370 | * %o5: &iotsb_num/&iotsb_handle | |
371 | * | |
372 | * returns %o0: status | |
373 | * %o1: iotsb_num/iotsb_handle | |
374 | */ | |
375 | ENTRY(pci_sun4v_iotsb_conf) | |
376 | mov %o5, %g1 | |
377 | mov HV_FAST_PCI_IOTSB_CONF, %o5 | |
378 | ta HV_FAST_TRAP | |
379 | retl | |
380 | stx %o1, [%g1] | |
381 | ENDPROC(pci_sun4v_iotsb_conf) | |
5116ab4e TD |
382 | |
383 | /* | |
384 | * %o0: devhandle | |
385 | * %o1: iotsb_num/iotsb_handle | |
386 | * %o2: pci_device | |
387 | * | |
388 | * returns %o0: status | |
389 | */ | |
390 | ENTRY(pci_sun4v_iotsb_bind) | |
391 | mov HV_FAST_PCI_IOTSB_BIND, %o5 | |
392 | ta HV_FAST_TRAP | |
393 | retl | |
394 | nop | |
395 | ENDPROC(pci_sun4v_iotsb_bind) | |
f08978b0 TD |
396 | |
397 | /* | |
398 | * %o0: devhandle | |
399 | * %o1: iotsb_num/iotsb_handle | |
400 | * %o2: index_count | |
401 | * %o3: iotte_attributes | |
402 | * %o4: io_page_list_p | |
403 | * %o5: &mapped | |
404 | * | |
405 | * returns %o0: status | |
406 | * %o1: #mapped | |
407 | */ | |
408 | ENTRY(pci_sun4v_iotsb_map) | |
409 | mov %o5, %g1 | |
410 | mov HV_FAST_PCI_IOTSB_MAP, %o5 | |
411 | ta HV_FAST_TRAP | |
412 | retl | |
413 | stx %o1, [%g1] | |
414 | ENDPROC(pci_sun4v_iotsb_map) | |
415 | ||
416 | /* | |
417 | * %o0: devhandle | |
418 | * %o1: iotsb_num/iotsb_handle | |
419 | * %o2: iotsb_index | |
420 | * %o3: #iottes | |
421 | * %o4: &demapped | |
422 | * | |
423 | * returns %o0: status | |
424 | * %o1: #demapped | |
425 | */ | |
426 | ENTRY(pci_sun4v_iotsb_demap) | |
427 | mov HV_FAST_PCI_IOTSB_DEMAP, %o5 | |
428 | ta HV_FAST_TRAP | |
429 | retl | |
430 | stx %o1, [%o4] | |
431 | ENDPROC(pci_sun4v_iotsb_demap) |