1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* pci_sun4v_asm: Hypervisor calls for PCI support. |
3 | * |
4 | * Copyright (C) 2006, 2008 David S. Miller <davem@davemloft.net> |
5 | */ |
6 | |
7 | #include <linux/linkage.h> |
8 | #include <asm/hypervisor.h> |
9 | |
10 | /* %o0: devhandle |
11 | * %o1: tsbid |
12 | * %o2: num ttes |
13 | * %o3: io_attributes |
14 | * %o4: io_page_list phys address |
15 | * |
16 | * returns %o0: -status if status was non-zero, else |
17 | * %o0: num pages mapped |
18 | */ |
19 | ENTRY(pci_sun4v_iommu_map) |
20 | mov %o5, %g1 |
21 | mov HV_FAST_PCI_IOMMU_MAP, %o5 |
22 | ta HV_FAST_TRAP |
23 | brnz,pn %o0, 1f |
24 | sub %g0, %o0, %o0 |
25 | mov %o1, %o0 |
26 | 1: retl |
27 | nop |
28 | ENDPROC(pci_sun4v_iommu_map) |
29 | |
30 | /* %o0: devhandle |
31 | * %o1: tsbid |
32 | * %o2: num ttes |
33 | * |
34 | * returns %o0: num ttes demapped |
35 | */ |
36 | ENTRY(pci_sun4v_iommu_demap) |
37 | mov HV_FAST_PCI_IOMMU_DEMAP, %o5 |
38 | ta HV_FAST_TRAP |
39 | retl |
40 | mov %o1, %o0 |
41 | ENDPROC(pci_sun4v_iommu_demap) |
42 | |
43 | /* %o0: devhandle |
44 | * %o1: tsbid |
45 | * %o2: &io_attributes |
46 | * %o3: &real_address |
47 | * |
48 | * returns %o0: status |
49 | */ |
50 | ENTRY(pci_sun4v_iommu_getmap) |
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 |
58 | ENDPROC(pci_sun4v_iommu_getmap) |
59 | |
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 | */ |
70 | ENTRY(pci_sun4v_config_get) |
71 | mov HV_FAST_PCI_CONFIG_GET, %o5 |
72 | ta HV_FAST_TRAP |
73 | brnz,a,pn %o1, 1f |
74 | mov -1, %o2 |
75 | 1: retl |
76 | mov %o2, %o0 |
77 | ENDPROC(pci_sun4v_config_get) |
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 | */ |
90 | ENTRY(pci_sun4v_config_put) |
91 | mov HV_FAST_PCI_CONFIG_PUT, %o5 |
92 | ta HV_FAST_TRAP |
93 | brnz,a,pn %o1, 1f |
94 | mov -1, %o1 |
95 | 1: retl |
96 | mov %o1, %o0 |
97 | ENDPROC(pci_sun4v_config_put) |
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 | */ |
109 | ENTRY(pci_sun4v_msiq_conf) |
110 | mov HV_FAST_PCI_MSIQ_CONF, %o5 |
111 | ta HV_FAST_TRAP |
112 | retl |
113 | mov %o0, %o0 |
114 | ENDPROC(pci_sun4v_msiq_conf) |
115 | |
116 | /* %o0: devhandle |
117 | * %o1: msiqid |
118 | * %o2: &msiq_phys_addr |
119 | * %o3: &msiq_num_entries |
120 | * |
121 | * returns %o0: status |
122 | */ |
123 | ENTRY(pci_sun4v_msiq_info) |
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 |
131 | ENDPROC(pci_sun4v_msiq_info) |
132 | |
133 | /* %o0: devhandle |
134 | * %o1: msiqid |
135 | * %o2: &valid |
136 | * |
137 | * returns %o0: status |
138 | */ |
139 | ENTRY(pci_sun4v_msiq_getvalid) |
140 | mov HV_FAST_PCI_MSIQ_GETVALID, %o5 |
141 | ta HV_FAST_TRAP |
142 | stx %o1, [%o2] |
143 | retl |
144 | mov %o0, %o0 |
145 | ENDPROC(pci_sun4v_msiq_getvalid) |
146 | |
147 | /* %o0: devhandle |
148 | * %o1: msiqid |
149 | * %o2: valid |
150 | * |
151 | * returns %o0: status |
152 | */ |
153 | ENTRY(pci_sun4v_msiq_setvalid) |
154 | mov HV_FAST_PCI_MSIQ_SETVALID, %o5 |
155 | ta HV_FAST_TRAP |
156 | retl |
157 | mov %o0, %o0 |
158 | ENDPROC(pci_sun4v_msiq_setvalid) |
159 | |
160 | /* %o0: devhandle |
161 | * %o1: msiqid |
162 | * %o2: &state |
163 | * |
164 | * returns %o0: status |
165 | */ |
166 | ENTRY(pci_sun4v_msiq_getstate) |
167 | mov HV_FAST_PCI_MSIQ_GETSTATE, %o5 |
168 | ta HV_FAST_TRAP |
169 | stx %o1, [%o2] |
170 | retl |
171 | mov %o0, %o0 |
172 | ENDPROC(pci_sun4v_msiq_getstate) |
173 | |
174 | /* %o0: devhandle |
175 | * %o1: msiqid |
176 | * %o2: state |
177 | * |
178 | * returns %o0: status |
179 | */ |
180 | ENTRY(pci_sun4v_msiq_setstate) |
181 | mov HV_FAST_PCI_MSIQ_SETSTATE, %o5 |
182 | ta HV_FAST_TRAP |
183 | retl |
184 | mov %o0, %o0 |
185 | ENDPROC(pci_sun4v_msiq_setstate) |
186 | |
187 | /* %o0: devhandle |
188 | * %o1: msiqid |
189 | * %o2: &head |
190 | * |
191 | * returns %o0: status |
192 | */ |
193 | ENTRY(pci_sun4v_msiq_gethead) |
194 | mov HV_FAST_PCI_MSIQ_GETHEAD, %o5 |
195 | ta HV_FAST_TRAP |
196 | stx %o1, [%o2] |
197 | retl |
198 | mov %o0, %o0 |
199 | ENDPROC(pci_sun4v_msiq_gethead) |
200 | |
201 | /* %o0: devhandle |
202 | * %o1: msiqid |
203 | * %o2: head |
204 | * |
205 | * returns %o0: status |
206 | */ |
207 | ENTRY(pci_sun4v_msiq_sethead) |
208 | mov HV_FAST_PCI_MSIQ_SETHEAD, %o5 |
209 | ta HV_FAST_TRAP |
210 | retl |
211 | mov %o0, %o0 |
212 | ENDPROC(pci_sun4v_msiq_sethead) |
213 | |
214 | /* %o0: devhandle |
215 | * %o1: msiqid |
216 | * %o2: &tail |
217 | * |
218 | * returns %o0: status |
219 | */ |
220 | ENTRY(pci_sun4v_msiq_gettail) |
221 | mov HV_FAST_PCI_MSIQ_GETTAIL, %o5 |
222 | ta HV_FAST_TRAP |
223 | stx %o1, [%o2] |
224 | retl |
225 | mov %o0, %o0 |
226 | ENDPROC(pci_sun4v_msiq_gettail) |
227 | |
228 | /* %o0: devhandle |
229 | * %o1: msinum |
230 | * %o2: &valid |
231 | * |
232 | * returns %o0: status |
233 | */ |
234 | ENTRY(pci_sun4v_msi_getvalid) |
235 | mov HV_FAST_PCI_MSI_GETVALID, %o5 |
236 | ta HV_FAST_TRAP |
237 | stx %o1, [%o2] |
238 | retl |
239 | mov %o0, %o0 |
240 | ENDPROC(pci_sun4v_msi_getvalid) |
241 | |
242 | /* %o0: devhandle |
243 | * %o1: msinum |
244 | * %o2: valid |
245 | * |
246 | * returns %o0: status |
247 | */ |
248 | ENTRY(pci_sun4v_msi_setvalid) |
249 | mov HV_FAST_PCI_MSI_SETVALID, %o5 |
250 | ta HV_FAST_TRAP |
251 | retl |
252 | mov %o0, %o0 |
253 | ENDPROC(pci_sun4v_msi_setvalid) |
254 | |
255 | /* %o0: devhandle |
256 | * %o1: msinum |
257 | * %o2: &msiq |
258 | * |
259 | * returns %o0: status |
260 | */ |
261 | ENTRY(pci_sun4v_msi_getmsiq) |
262 | mov HV_FAST_PCI_MSI_GETMSIQ, %o5 |
263 | ta HV_FAST_TRAP |
264 | stx %o1, [%o2] |
265 | retl |
266 | mov %o0, %o0 |
267 | ENDPROC(pci_sun4v_msi_getmsiq) |
268 | |
269 | /* %o0: devhandle |
270 | * %o1: msinum |
271 | * %o2: msitype |
272 | * %o3: msiq |
273 | * |
274 | * returns %o0: status |
275 | */ |
276 | ENTRY(pci_sun4v_msi_setmsiq) |
277 | mov HV_FAST_PCI_MSI_SETMSIQ, %o5 |
278 | ta HV_FAST_TRAP |
279 | retl |
280 | mov %o0, %o0 |
281 | ENDPROC(pci_sun4v_msi_setmsiq) |
282 | |
283 | /* %o0: devhandle |
284 | * %o1: msinum |
285 | * %o2: &state |
286 | * |
287 | * returns %o0: status |
288 | */ |
289 | ENTRY(pci_sun4v_msi_getstate) |
290 | mov HV_FAST_PCI_MSI_GETSTATE, %o5 |
291 | ta HV_FAST_TRAP |
292 | stx %o1, [%o2] |
293 | retl |
294 | mov %o0, %o0 |
295 | ENDPROC(pci_sun4v_msi_getstate) |
296 | |
297 | /* %o0: devhandle |
298 | * %o1: msinum |
299 | * %o2: state |
300 | * |
301 | * returns %o0: status |
302 | */ |
303 | ENTRY(pci_sun4v_msi_setstate) |
304 | mov HV_FAST_PCI_MSI_SETSTATE, %o5 |
305 | ta HV_FAST_TRAP |
306 | retl |
307 | mov %o0, %o0 |
308 | ENDPROC(pci_sun4v_msi_setstate) |
309 | |
310 | /* %o0: devhandle |
311 | * %o1: msinum |
312 | * %o2: &msiq |
313 | * |
314 | * returns %o0: status |
315 | */ |
316 | ENTRY(pci_sun4v_msg_getmsiq) |
317 | mov HV_FAST_PCI_MSG_GETMSIQ, %o5 |
318 | ta HV_FAST_TRAP |
319 | stx %o1, [%o2] |
320 | retl |
321 | mov %o0, %o0 |
322 | ENDPROC(pci_sun4v_msg_getmsiq) |
323 | |
324 | /* %o0: devhandle |
325 | * %o1: msinum |
326 | * %o2: msiq |
327 | * |
328 | * returns %o0: status |
329 | */ |
330 | ENTRY(pci_sun4v_msg_setmsiq) |
331 | mov HV_FAST_PCI_MSG_SETMSIQ, %o5 |
332 | ta HV_FAST_TRAP |
333 | retl |
334 | mov %o0, %o0 |
335 | ENDPROC(pci_sun4v_msg_setmsiq) |
336 | |
337 | /* %o0: devhandle |
338 | * %o1: msinum |
339 | * %o2: &valid |
340 | * |
341 | * returns %o0: status |
342 | */ |
343 | ENTRY(pci_sun4v_msg_getvalid) |
344 | mov HV_FAST_PCI_MSG_GETVALID, %o5 |
345 | ta HV_FAST_TRAP |
346 | stx %o1, [%o2] |
347 | retl |
348 | mov %o0, %o0 |
349 | ENDPROC(pci_sun4v_msg_getvalid) |
350 | |
351 | /* %o0: devhandle |
352 | * %o1: msinum |
353 | * %o2: valid |
354 | * |
355 | * returns %o0: status |
356 | */ |
357 | ENTRY(pci_sun4v_msg_setvalid) |
358 | mov HV_FAST_PCI_MSG_SETVALID, %o5 |
359 | ta HV_FAST_TRAP |
360 | retl |
361 | mov %o0, %o0 |
362 | ENDPROC(pci_sun4v_msg_setvalid) |
363 | |
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) |
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) |
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) |
432 | |