blob: 7836dc71fc207ef5a1a75ad2acc64f8d27288cb0 [file] [log] [blame]
David Gibsonad0ebb92012-06-27 14:50:44 +10001/*
2 * QEMU sPAPR IOMMU (TCE) code
3 *
4 * Copyright (c) 2010 David Gibson, IBM Corporation <dwg@au1.ibm.com>
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
Chetan Pant61f3c912020-10-23 12:44:24 +00009 * version 2.1 of the License, or (at your option) any later version.
David Gibsonad0ebb92012-06-27 14:50:44 +100010 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 */
Markus Armbruster0b8fa322019-05-23 16:35:07 +020019
Peter Maydell0d755902016-01-26 18:16:58 +000020#include "qemu/osdep.h"
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +100021#include "qemu/error-report.h"
Paolo Bonzini03dd0242015-12-15 13:16:16 +010022#include "qemu/log.h"
Markus Armbruster0b8fa322019-05-23 16:35:07 +020023#include "qemu/module.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010024#include "sysemu/kvm.h"
David Gibsonad0ebb92012-06-27 14:50:44 +100025#include "kvm_ppc.h"
Markus Armbrusterd6454272019-08-12 07:23:45 +020026#include "migration/vmstate.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010027#include "sysemu/dma.h"
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +100028#include "trace.h"
David Gibsonad0ebb92012-06-27 14:50:44 +100029
Paolo Bonzini0d09e412013-02-05 17:06:20 +010030#include "hw/ppc/spapr.h"
Alexey Kardashevskiyee9a5692015-01-29 16:04:58 +110031#include "hw/ppc/spapr_vio.h"
David Gibsonad0ebb92012-06-27 14:50:44 +100032
33#include <libfdt.h>
34
David Gibsonce2918c2019-03-06 15:35:37 +110035enum SpaprTceAccess {
David Gibsonad0ebb92012-06-27 14:50:44 +100036 SPAPR_TCE_FAULT = 0,
37 SPAPR_TCE_RO = 1,
38 SPAPR_TCE_WO = 2,
39 SPAPR_TCE_RW = 3,
40};
41
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +100042#define IOMMU_PAGE_SIZE(shift) (1ULL << (shift))
43#define IOMMU_PAGE_MASK(shift) (~(IOMMU_PAGE_SIZE(shift) - 1))
44
David Gibsonce2918c2019-03-06 15:35:37 +110045static QLIST_HEAD(, SpaprTceTable) spapr_tce_tables;
David Gibsonad0ebb92012-06-27 14:50:44 +100046
David Gibsonce2918c2019-03-06 15:35:37 +110047SpaprTceTable *spapr_tce_find_by_liobn(target_ulong liobn)
David Gibsonad0ebb92012-06-27 14:50:44 +100048{
David Gibsonce2918c2019-03-06 15:35:37 +110049 SpaprTceTable *tcet;
David Gibsonad0ebb92012-06-27 14:50:44 +100050
David Gibsond4261662013-04-29 18:33:51 +000051 if (liobn & 0xFFFFFFFF00000000ULL) {
52 hcall_dprintf("Request for out-of-bounds LIOBN 0x" TARGET_FMT_lx "\n",
53 liobn);
54 return NULL;
55 }
56
David Gibsonad0ebb92012-06-27 14:50:44 +100057 QLIST_FOREACH(tcet, &spapr_tce_tables, list) {
Thomas Huthf9ce8e02015-05-07 15:33:38 +100058 if (tcet->liobn == (uint32_t)liobn) {
David Gibsonad0ebb92012-06-27 14:50:44 +100059 return tcet;
60 }
61 }
62
63 return NULL;
64}
65
Greg Kurz5709af32015-07-02 16:23:12 +100066static IOMMUAccessFlags spapr_tce_iommu_access_flags(uint64_t tce)
67{
68 switch (tce & SPAPR_TCE_RW) {
69 case SPAPR_TCE_FAULT:
70 return IOMMU_NONE;
71 case SPAPR_TCE_RO:
72 return IOMMU_RO;
73 case SPAPR_TCE_WO:
74 return IOMMU_WO;
75 default: /* SPAPR_TCE_RW */
76 return IOMMU_RW;
77 }
78}
79
Alexey Kardashevskiyfec5d3a2016-05-04 16:52:19 +100080static uint64_t *spapr_tce_alloc_table(uint32_t liobn,
81 uint32_t page_shift,
Alexey Kardashevskiyd6ee2a72017-03-10 12:41:13 +110082 uint64_t bus_offset,
Alexey Kardashevskiyfec5d3a2016-05-04 16:52:19 +100083 uint32_t nb_table,
84 int *fd,
85 bool need_vfio)
86{
87 uint64_t *table = NULL;
Alexey Kardashevskiyfec5d3a2016-05-04 16:52:19 +100088
Alexey Kardashevskiyd6ee2a72017-03-10 12:41:13 +110089 if (kvm_enabled()) {
90 table = kvmppc_create_spapr_tce(liobn, page_shift, bus_offset, nb_table,
91 fd, need_vfio);
Alexey Kardashevskiyfec5d3a2016-05-04 16:52:19 +100092 }
93
94 if (!table) {
95 *fd = -1;
Greg Kurzdec4ec42018-11-27 14:05:18 +010096 table = g_new0(uint64_t, nb_table);
Alexey Kardashevskiyfec5d3a2016-05-04 16:52:19 +100097 }
98
99 trace_spapr_iommu_new_table(liobn, table, *fd);
100
101 return table;
102}
103
104static void spapr_tce_free_table(uint64_t *table, int fd, uint32_t nb_table)
105{
106 if (!kvm_enabled() ||
107 (kvmppc_remove_spapr_tce(table, fd, nb_table) != 0)) {
108 g_free(table);
109 }
110}
111
Paolo Bonzini79e2b9a2015-01-21 12:09:14 +0100112/* Called from RCU critical section */
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +1000113static IOMMUTLBEntry spapr_tce_translate_iommu(IOMMUMemoryRegion *iommu,
114 hwaddr addr,
Peter Maydell2c91bcf2018-06-15 14:57:16 +0100115 IOMMUAccessFlags flag,
116 int iommu_idx)
David Gibsonad0ebb92012-06-27 14:50:44 +1000117{
David Gibsonce2918c2019-03-06 15:35:37 +1100118 SpaprTceTable *tcet = container_of(iommu, SpaprTceTable, iommu);
David Gibsonad0ebb92012-06-27 14:50:44 +1000119 uint64_t tce;
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +1000120 IOMMUTLBEntry ret = {
121 .target_as = &address_space_memory,
122 .iova = 0,
123 .translated_addr = 0,
124 .addr_mask = ~(hwaddr)0,
125 .perm = IOMMU_NONE,
126 };
David Gibsonad0ebb92012-06-27 14:50:44 +1000127
Alexey Kardashevskiyee9a5692015-01-29 16:04:58 +1100128 if ((addr >> tcet->page_shift) < tcet->nb_table) {
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +1000129 /* Check if we are in bound */
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000130 hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
131
132 tce = tcet->table[addr >> tcet->page_shift];
133 ret.iova = addr & page_mask;
134 ret.translated_addr = tce & page_mask;
135 ret.addr_mask = ~page_mask;
Greg Kurz5709af32015-07-02 16:23:12 +1000136 ret.perm = spapr_tce_iommu_access_flags(tce);
David Gibson53724ee2012-09-12 16:57:20 +0000137 }
Alexey Kardashevskiya14f04e2019-08-12 15:42:02 +1000138 trace_spapr_iommu_xlate(tcet->liobn, addr, ret.translated_addr, ret.perm,
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +1000139 ret.addr_mask);
David Gibson53724ee2012-09-12 16:57:20 +0000140
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +1000141 return ret;
Paolo Bonzinia71bfbf2013-04-16 15:05:06 +0200142}
143
Alexey Kardashevskiy5f366662019-03-07 16:05:16 +1100144static void spapr_tce_replay(IOMMUMemoryRegion *iommu_mr, IOMMUNotifier *n)
145{
146 MemoryRegion *mr = MEMORY_REGION(iommu_mr);
147 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
148 hwaddr addr, granularity;
149 IOMMUTLBEntry iotlb;
David Gibsonce2918c2019-03-06 15:35:37 +1100150 SpaprTceTable *tcet = container_of(iommu_mr, SpaprTceTable, iommu);
Alexey Kardashevskiy5f366662019-03-07 16:05:16 +1100151
152 if (tcet->skipping_replay) {
153 return;
154 }
155
156 granularity = memory_region_iommu_get_min_page_size(iommu_mr);
157
158 for (addr = 0; addr < memory_region_size(mr); addr += granularity) {
159 iotlb = imrc->translate(iommu_mr, addr, IOMMU_NONE, n->iommu_idx);
160 if (iotlb.perm != IOMMU_NONE) {
161 n->notify(n, &iotlb);
162 }
163
164 /*
165 * if (2^64 - MR size) < granularity, it's possible to get an
166 * infinite loop here. This should catch such a wraparound.
167 */
168 if ((addr + granularity) < addr) {
169 break;
170 }
171 }
172}
173
Dr. David Alan Gilbert44b1ff32017-09-25 12:29:12 +0100174static int spapr_tce_table_pre_save(void *opaque)
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000175{
David Gibsonce2918c2019-03-06 15:35:37 +1100176 SpaprTceTable *tcet = SPAPR_TCE_TABLE(opaque);
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000177
178 tcet->mig_table = tcet->table;
179 tcet->mig_nb_table = tcet->nb_table;
180
181 trace_spapr_iommu_pre_save(tcet->liobn, tcet->mig_nb_table,
182 tcet->bus_offset, tcet->page_shift);
Dr. David Alan Gilbert44b1ff32017-09-25 12:29:12 +0100183
184 return 0;
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000185}
186
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +1000187static uint64_t spapr_tce_get_min_page_size(IOMMUMemoryRegion *iommu)
Alexey Kardashevskiyf682e9c2016-06-21 11:14:01 +1000188{
David Gibsonce2918c2019-03-06 15:35:37 +1100189 SpaprTceTable *tcet = container_of(iommu, SpaprTceTable, iommu);
Alexey Kardashevskiyf682e9c2016-06-21 11:14:01 +1000190
191 return 1ULL << tcet->page_shift;
192}
193
Alexey Kardashevskiy9ded7802018-02-06 11:08:24 -0700194static int spapr_tce_get_attr(IOMMUMemoryRegion *iommu,
195 enum IOMMUMemoryRegionAttr attr, void *data)
196{
David Gibsonce2918c2019-03-06 15:35:37 +1100197 SpaprTceTable *tcet = container_of(iommu, SpaprTceTable, iommu);
Alexey Kardashevskiy9ded7802018-02-06 11:08:24 -0700198
199 if (attr == IOMMU_ATTR_SPAPR_TCE_FD && kvmppc_has_cap_spapr_vfio()) {
200 *(int *) data = tcet->fd;
201 return 0;
202 }
203
204 return -EINVAL;
205}
206
Eric Auger549d40052019-09-24 10:25:17 +0200207static int spapr_tce_notify_flag_changed(IOMMUMemoryRegion *iommu,
208 IOMMUNotifierFlag old,
209 IOMMUNotifierFlag new,
210 Error **errp)
Alexey Kardashevskiy606b5492016-07-04 13:33:03 +1000211{
David Gibsonce2918c2019-03-06 15:35:37 +1100212 struct SpaprTceTable *tbl = container_of(iommu, SpaprTceTable, iommu);
Alexey Kardashevskiy606b5492016-07-04 13:33:03 +1000213
Eric Auger1a8e22b2021-02-09 22:32:33 +0100214 if (new & IOMMU_NOTIFIER_DEVIOTLB_UNMAP) {
215 error_setg(errp, "spart_tce does not support dev-iotlb yet");
216 return -EINVAL;
217 }
218
Peter Xu5bf3d312016-09-23 13:02:27 +0800219 if (old == IOMMU_NOTIFIER_NONE && new != IOMMU_NOTIFIER_NONE) {
220 spapr_tce_set_need_vfio(tbl, true);
221 } else if (old != IOMMU_NOTIFIER_NONE && new == IOMMU_NOTIFIER_NONE) {
222 spapr_tce_set_need_vfio(tbl, false);
223 }
Eric Auger549d40052019-09-24 10:25:17 +0200224 return 0;
Alexey Kardashevskiy606b5492016-07-04 13:33:03 +1000225}
226
Alexey Kardashevskiyee9a5692015-01-29 16:04:58 +1100227static int spapr_tce_table_post_load(void *opaque, int version_id)
228{
David Gibsonce2918c2019-03-06 15:35:37 +1100229 SpaprTceTable *tcet = SPAPR_TCE_TABLE(opaque);
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000230 uint32_t old_nb_table = tcet->nb_table;
231 uint64_t old_bus_offset = tcet->bus_offset;
232 uint32_t old_page_shift = tcet->page_shift;
Alexey Kardashevskiyee9a5692015-01-29 16:04:58 +1100233
234 if (tcet->vdev) {
235 spapr_vio_set_bypass(tcet->vdev, tcet->bypass);
236 }
237
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000238 if (tcet->mig_nb_table != tcet->nb_table) {
239 spapr_tce_table_disable(tcet);
240 }
241
242 if (tcet->mig_nb_table) {
243 if (!tcet->nb_table) {
244 spapr_tce_table_enable(tcet, old_page_shift, old_bus_offset,
245 tcet->mig_nb_table);
246 }
247
248 memcpy(tcet->table, tcet->mig_table,
249 tcet->nb_table * sizeof(tcet->table[0]));
250
Daniel Henrique Barboza44adcaa2023-07-28 16:56:45 -0300251 g_free(tcet->mig_table);
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000252 tcet->mig_table = NULL;
253 }
254
255 trace_spapr_iommu_post_load(tcet->liobn, old_nb_table, tcet->nb_table,
256 tcet->bus_offset, tcet->page_shift);
257
Alexey Kardashevskiyee9a5692015-01-29 16:04:58 +1100258 return 0;
259}
260
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000261static bool spapr_tce_table_ex_needed(void *opaque)
262{
David Gibsonce2918c2019-03-06 15:35:37 +1100263 SpaprTceTable *tcet = opaque;
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000264
265 return tcet->bus_offset || tcet->page_shift != 0xC;
266}
267
268static const VMStateDescription vmstate_spapr_tce_table_ex = {
269 .name = "spapr_iommu_ex",
270 .version_id = 1,
271 .minimum_version_id = 1,
272 .needed = spapr_tce_table_ex_needed,
Richard Henderson078ddbc2023-12-21 14:16:28 +1100273 .fields = (const VMStateField[]) {
David Gibsonce2918c2019-03-06 15:35:37 +1100274 VMSTATE_UINT64(bus_offset, SpaprTceTable),
275 VMSTATE_UINT32(page_shift, SpaprTceTable),
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000276 VMSTATE_END_OF_LIST()
277 },
278};
279
Anthony Liguoria83000f2013-07-18 14:32:58 -0500280static const VMStateDescription vmstate_spapr_tce_table = {
281 .name = "spapr_iommu",
Alexey Kardashevskiy31cc81f2022-06-22 15:29:55 +1000282 .version_id = 3,
Alexey Kardashevskiy523e7b82014-05-27 15:36:35 +1000283 .minimum_version_id = 2,
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000284 .pre_save = spapr_tce_table_pre_save,
Alexey Kardashevskiyee9a5692015-01-29 16:04:58 +1100285 .post_load = spapr_tce_table_post_load,
Richard Henderson078ddbc2023-12-21 14:16:28 +1100286 .fields = (const VMStateField []) {
Anthony Liguoria83000f2013-07-18 14:32:58 -0500287 /* Sanity check */
David Gibsonce2918c2019-03-06 15:35:37 +1100288 VMSTATE_UINT32_EQUAL(liobn, SpaprTceTable, NULL),
Anthony Liguoria83000f2013-07-18 14:32:58 -0500289
290 /* IOMMU state */
David Gibsonce2918c2019-03-06 15:35:37 +1100291 VMSTATE_UINT32(mig_nb_table, SpaprTceTable),
292 VMSTATE_BOOL(bypass, SpaprTceTable),
293 VMSTATE_VARRAY_UINT32_ALLOC(mig_table, SpaprTceTable, mig_nb_table, 0,
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000294 vmstate_info_uint64, uint64_t),
Alexey Kardashevskiy31cc81f2022-06-22 15:29:55 +1000295 VMSTATE_BOOL_V(def_win, SpaprTceTable, 3),
Anthony Liguoria83000f2013-07-18 14:32:58 -0500296
297 VMSTATE_END_OF_LIST()
298 },
Richard Henderson078ddbc2023-12-21 14:16:28 +1100299 .subsections = (const VMStateDescription * const []) {
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000300 &vmstate_spapr_tce_table_ex,
301 NULL
302 }
Anthony Liguoria83000f2013-07-18 14:32:58 -0500303};
304
Greg Kurza931ad12017-07-25 19:59:06 +0200305static void spapr_tce_table_realize(DeviceState *dev, Error **errp)
Anthony Liguoria83000f2013-07-18 14:32:58 -0500306{
David Gibsonce2918c2019-03-06 15:35:37 +1100307 SpaprTceTable *tcet = SPAPR_TCE_TABLE(dev);
Alexey Kardashevskiyb4b6eb72016-06-01 18:57:35 +1000308 Object *tcetobj = OBJECT(tcet);
Greg Kurza205a052017-07-25 19:58:40 +0200309 gchar *tmp;
Anthony Liguoria83000f2013-07-18 14:32:58 -0500310
Alexey Kardashevskiyfec5d3a2016-05-04 16:52:19 +1000311 tcet->fd = -1;
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000312 tcet->need_vfio = false;
Greg Kurza205a052017-07-25 19:58:40 +0200313 tmp = g_strdup_printf("tce-root-%x", tcet->liobn);
Alexey Kardashevskiyb4b6eb72016-06-01 18:57:35 +1000314 memory_region_init(&tcet->root, tcetobj, tmp, UINT64_MAX);
Greg Kurza205a052017-07-25 19:58:40 +0200315 g_free(tmp);
Alexey Kardashevskiyb4b6eb72016-06-01 18:57:35 +1000316
Greg Kurza205a052017-07-25 19:58:40 +0200317 tmp = g_strdup_printf("tce-iommu-%x", tcet->liobn);
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +1000318 memory_region_init_iommu(&tcet->iommu, sizeof(tcet->iommu),
319 TYPE_SPAPR_IOMMU_MEMORY_REGION,
320 tcetobj, tmp, 0);
Greg Kurza205a052017-07-25 19:58:40 +0200321 g_free(tmp);
Anthony Liguoria83000f2013-07-18 14:32:58 -0500322
323 QLIST_INSERT_HEAD(&spapr_tce_tables, tcet, list);
324
Marc-André Lureau3cad4052019-08-28 16:02:32 +0400325 vmstate_register(VMSTATE_IF(tcet), tcet->liobn, &vmstate_spapr_tce_table,
Alexey Kardashevskiy00d4f522014-05-12 18:46:32 +1000326 tcet);
Anthony Liguoria83000f2013-07-18 14:32:58 -0500327}
328
David Gibsonce2918c2019-03-06 15:35:37 +1100329void spapr_tce_set_need_vfio(SpaprTceTable *tcet, bool need_vfio)
David Gibsonc10325d2015-10-01 10:46:10 +1000330{
331 size_t table_size = tcet->nb_table * sizeof(uint64_t);
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000332 uint64_t *oldtable;
333 int newfd = -1;
David Gibsonc10325d2015-10-01 10:46:10 +1000334
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000335 g_assert(need_vfio != tcet->need_vfio);
David Gibsonc10325d2015-10-01 10:46:10 +1000336
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000337 tcet->need_vfio = need_vfio;
David Gibsonc10325d2015-10-01 10:46:10 +1000338
Alexey Kardashevskiy9ded7802018-02-06 11:08:24 -0700339 if (!need_vfio || (tcet->fd != -1 && kvmppc_has_cap_spapr_vfio())) {
340 return;
341 }
342
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000343 oldtable = tcet->table;
David Gibsonc10325d2015-10-01 10:46:10 +1000344
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000345 tcet->table = spapr_tce_alloc_table(tcet->liobn,
346 tcet->page_shift,
347 tcet->bus_offset,
348 tcet->nb_table,
349 &newfd,
350 need_vfio);
351 memcpy(tcet->table, oldtable, table_size);
David Gibsonc10325d2015-10-01 10:46:10 +1000352
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000353 spapr_tce_free_table(oldtable, tcet->fd, tcet->nb_table);
David Gibsonc10325d2015-10-01 10:46:10 +1000354
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000355 tcet->fd = newfd;
David Gibsonc10325d2015-10-01 10:46:10 +1000356}
357
David Gibsonce2918c2019-03-06 15:35:37 +1100358SpaprTceTable *spapr_tce_new_table(DeviceState *owner, uint32_t liobn)
David Gibsonad0ebb92012-06-27 14:50:44 +1000359{
David Gibsonce2918c2019-03-06 15:35:37 +1100360 SpaprTceTable *tcet;
Greg Kurza205a052017-07-25 19:58:40 +0200361 gchar *tmp;
David Gibsonad0ebb92012-06-27 14:50:44 +1000362
David Gibson8b1853e2012-12-03 16:42:13 +0000363 if (spapr_tce_find_by_liobn(liobn)) {
Cédric Le Goaterce9863b2016-08-02 19:38:00 +0200364 error_report("Attempted to create TCE table with duplicate"
365 " LIOBN 0x%x", liobn);
David Gibson8b1853e2012-12-03 16:42:13 +0000366 return NULL;
367 }
368
Anthony Liguoria83000f2013-07-18 14:32:58 -0500369 tcet = SPAPR_TCE_TABLE(object_new(TYPE_SPAPR_TCE_TABLE));
David Gibsonad0ebb92012-06-27 14:50:44 +1000370 tcet->liobn = liobn;
David Gibsonad0ebb92012-06-27 14:50:44 +1000371
Greg Kurza205a052017-07-25 19:58:40 +0200372 tmp = g_strdup_printf("tce-table-%x", liobn);
Markus Armbrusterd2623122020-05-05 17:29:22 +0200373 object_property_add_child(OBJECT(owner), tmp, OBJECT(tcet));
Greg Kurza205a052017-07-25 19:58:40 +0200374 g_free(tmp);
Michael Roth8dc97852017-07-25 20:00:09 +0200375 object_unref(OBJECT(tcet));
David Gibsonad0ebb92012-06-27 14:50:44 +1000376
Markus Armbrusterce189ab2020-06-10 07:32:45 +0200377 qdev_realize(DEVICE(tcet), NULL, NULL);
David Gibsonad0ebb92012-06-27 14:50:44 +1000378
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200379 return tcet;
380}
381
David Gibsonce2918c2019-03-06 15:35:37 +1100382void spapr_tce_table_enable(SpaprTceTable *tcet,
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000383 uint32_t page_shift, uint64_t bus_offset,
384 uint32_t nb_table)
385{
386 if (tcet->nb_table) {
Alistair Francis3dc6f862017-07-12 06:57:41 -0700387 warn_report("trying to enable already enabled TCE table");
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000388 return;
389 }
390
391 tcet->bus_offset = bus_offset;
392 tcet->page_shift = page_shift;
393 tcet->nb_table = nb_table;
394 tcet->table = spapr_tce_alloc_table(tcet->liobn,
395 tcet->page_shift,
Alexey Kardashevskiyd6ee2a72017-03-10 12:41:13 +1100396 tcet->bus_offset,
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000397 tcet->nb_table,
398 &tcet->fd,
399 tcet->need_vfio);
400
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +1000401 memory_region_set_size(MEMORY_REGION(&tcet->iommu),
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000402 (uint64_t)tcet->nb_table << tcet->page_shift);
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +1000403 memory_region_add_subregion(&tcet->root, tcet->bus_offset,
404 MEMORY_REGION(&tcet->iommu));
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000405}
406
David Gibsonce2918c2019-03-06 15:35:37 +1100407void spapr_tce_table_disable(SpaprTceTable *tcet)
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000408{
409 if (!tcet->nb_table) {
410 return;
411 }
412
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +1000413 memory_region_del_subregion(&tcet->root, MEMORY_REGION(&tcet->iommu));
414 memory_region_set_size(MEMORY_REGION(&tcet->iommu), 0);
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000415
416 spapr_tce_free_table(tcet->table, tcet->fd, tcet->nb_table);
417 tcet->fd = -1;
418 tcet->table = NULL;
419 tcet->bus_offset = 0;
420 tcet->page_shift = 0;
421 tcet->nb_table = 0;
422}
423
Markus Armbrusterb69c3c22020-05-05 17:29:24 +0200424static void spapr_tce_table_unrealize(DeviceState *dev)
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200425{
David Gibsonce2918c2019-03-06 15:35:37 +1100426 SpaprTceTable *tcet = SPAPR_TCE_TABLE(dev);
Anthony Liguoria83000f2013-07-18 14:32:58 -0500427
Marc-André Lureau3cad4052019-08-28 16:02:32 +0400428 vmstate_unregister(VMSTATE_IF(tcet), &vmstate_spapr_tce_table, tcet);
Greg Kurzea359d22017-07-25 20:00:22 +0200429
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200430 QLIST_REMOVE(tcet, list);
431
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000432 spapr_tce_table_disable(tcet);
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200433}
434
David Gibsonce2918c2019-03-06 15:35:37 +1100435MemoryRegion *spapr_tce_get_iommu(SpaprTceTable *tcet)
Paolo Bonzinia84bb432013-04-11 12:35:33 +0200436{
Alexey Kardashevskiyb4b6eb72016-06-01 18:57:35 +1000437 return &tcet->root;
Paolo Bonzinia84bb432013-04-11 12:35:33 +0200438}
439
Anthony Liguoria83000f2013-07-18 14:32:58 -0500440static void spapr_tce_reset(DeviceState *dev)
David Gibsoneddeed22012-09-12 16:57:14 +0000441{
David Gibsonce2918c2019-03-06 15:35:37 +1100442 SpaprTceTable *tcet = SPAPR_TCE_TABLE(dev);
Alexey Kardashevskiy523e7b82014-05-27 15:36:35 +1000443 size_t table_size = tcet->nb_table * sizeof(uint64_t);
David Gibsoneddeed22012-09-12 16:57:14 +0000444
David Gibson57c0eb12016-08-08 10:06:25 +1000445 if (tcet->nb_table) {
446 memset(tcet->table, 0, table_size);
447 }
David Gibsoneddeed22012-09-12 16:57:14 +0000448}
449
David Gibsonce2918c2019-03-06 15:35:37 +1100450static target_ulong put_tce_emu(SpaprTceTable *tcet, target_ulong ioba,
David Gibsonedded452012-06-27 14:50:46 +1000451 target_ulong tce)
David Gibsonad0ebb92012-06-27 14:50:44 +1000452{
Eugenio Pérez5039caf2020-11-16 17:55:03 +0100453 IOMMUTLBEvent event;
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000454 hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
Alexey Kardashevskiy1b8ecee2014-05-27 15:36:37 +1000455 unsigned long index = (ioba - tcet->bus_offset) >> tcet->page_shift;
David Gibsonad0ebb92012-06-27 14:50:44 +1000456
Alexey Kardashevskiy1b8ecee2014-05-27 15:36:37 +1000457 if (index >= tcet->nb_table) {
David Gibsonb55519a2013-04-29 18:33:52 +0000458 hcall_dprintf("spapr_vio_put_tce on out-of-bounds IOBA 0x"
David Gibsonad0ebb92012-06-27 14:50:44 +1000459 TARGET_FMT_lx "\n", ioba);
460 return H_PARAMETER;
461 }
462
Alexey Kardashevskiy1b8ecee2014-05-27 15:36:37 +1000463 tcet->table[index] = tce;
David Gibsonad0ebb92012-06-27 14:50:44 +1000464
Eugenio Pérez5039caf2020-11-16 17:55:03 +0100465 event.entry.target_as = &address_space_memory,
466 event.entry.iova = (ioba - tcet->bus_offset) & page_mask;
467 event.entry.translated_addr = tce & page_mask;
468 event.entry.addr_mask = ~page_mask;
469 event.entry.perm = spapr_tce_iommu_access_flags(tce);
470 event.type = event.entry.perm ? IOMMU_NOTIFIER_MAP : IOMMU_NOTIFIER_UNMAP;
471 memory_region_notify_iommu(&tcet->iommu, 0, event);
Paolo Bonzinia84bb432013-04-11 12:35:33 +0200472
David Gibsonad0ebb92012-06-27 14:50:44 +1000473 return H_SUCCESS;
474}
475
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000476static target_ulong h_put_tce_indirect(PowerPCCPU *cpu,
David Gibsonce2918c2019-03-06 15:35:37 +1100477 SpaprMachineState *spapr,
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000478 target_ulong opcode, target_ulong *args)
479{
480 int i;
481 target_ulong liobn = args[0];
482 target_ulong ioba = args[1];
483 target_ulong ioba1 = ioba;
484 target_ulong tce_list = args[2];
485 target_ulong npages = args[3];
Alexey Kardashevskiyf1215ea2015-05-07 15:33:29 +1000486 target_ulong ret = H_PARAMETER, tce = 0;
David Gibsonce2918c2019-03-06 15:35:37 +1100487 SpaprTceTable *tcet = spapr_tce_find_by_liobn(liobn);
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000488 CPUState *cs = CPU(cpu);
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000489 hwaddr page_mask, page_size;
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000490
491 if (!tcet) {
492 return H_PARAMETER;
493 }
494
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000495 if ((npages > 512) || (tce_list & SPAPR_TCE_PAGE_MASK)) {
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000496 return H_PARAMETER;
497 }
498
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000499 page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
500 page_size = IOMMU_PAGE_SIZE(tcet->page_shift);
501 ioba &= page_mask;
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000502
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000503 for (i = 0; i < npages; ++i, ioba += page_size) {
Greg Kurz4d9ab7d2015-07-02 16:23:11 +1000504 tce = ldq_be_phys(cs->as, tce_list + i * sizeof(target_ulong));
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000505
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000506 ret = put_tce_emu(tcet, ioba, tce);
507 if (ret) {
508 break;
509 }
510 }
511
512 /* Trace last successful or the first problematic entry */
513 i = i ? (i - 1) : 0;
Alexey Kardashevskiyd9d96a32015-05-07 15:33:33 +1000514 if (SPAPR_IS_PCI_LIOBN(liobn)) {
515 trace_spapr_iommu_pci_indirect(liobn, ioba1, tce_list, i, tce, ret);
516 } else {
517 trace_spapr_iommu_indirect(liobn, ioba1, tce_list, i, tce, ret);
518 }
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000519 return ret;
520}
521
David Gibsonce2918c2019-03-06 15:35:37 +1100522static target_ulong h_stuff_tce(PowerPCCPU *cpu, SpaprMachineState *spapr,
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000523 target_ulong opcode, target_ulong *args)
524{
525 int i;
526 target_ulong liobn = args[0];
527 target_ulong ioba = args[1];
528 target_ulong tce_value = args[2];
529 target_ulong npages = args[3];
530 target_ulong ret = H_PARAMETER;
David Gibsonce2918c2019-03-06 15:35:37 +1100531 SpaprTceTable *tcet = spapr_tce_find_by_liobn(liobn);
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000532 hwaddr page_mask, page_size;
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000533
534 if (!tcet) {
535 return H_PARAMETER;
536 }
537
538 if (npages > tcet->nb_table) {
539 return H_PARAMETER;
540 }
541
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000542 page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
543 page_size = IOMMU_PAGE_SIZE(tcet->page_shift);
544 ioba &= page_mask;
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000545
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000546 for (i = 0; i < npages; ++i, ioba += page_size) {
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000547 ret = put_tce_emu(tcet, ioba, tce_value);
548 if (ret) {
549 break;
550 }
551 }
Alexey Kardashevskiyd9d96a32015-05-07 15:33:33 +1000552 if (SPAPR_IS_PCI_LIOBN(liobn)) {
553 trace_spapr_iommu_pci_stuff(liobn, ioba, tce_value, npages, ret);
554 } else {
555 trace_spapr_iommu_stuff(liobn, ioba, tce_value, npages, ret);
556 }
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000557
558 return ret;
559}
560
David Gibsonce2918c2019-03-06 15:35:37 +1100561static target_ulong h_put_tce(PowerPCCPU *cpu, SpaprMachineState *spapr,
David Gibsonedded452012-06-27 14:50:46 +1000562 target_ulong opcode, target_ulong *args)
563{
564 target_ulong liobn = args[0];
565 target_ulong ioba = args[1];
566 target_ulong tce = args[2];
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +1000567 target_ulong ret = H_PARAMETER;
David Gibsonce2918c2019-03-06 15:35:37 +1100568 SpaprTceTable *tcet = spapr_tce_find_by_liobn(liobn);
David Gibsonedded452012-06-27 14:50:46 +1000569
David Gibsonedded452012-06-27 14:50:46 +1000570 if (tcet) {
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000571 hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
572
573 ioba &= page_mask;
574
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +1000575 ret = put_tce_emu(tcet, ioba, tce);
David Gibsonedded452012-06-27 14:50:46 +1000576 }
Alexey Kardashevskiyd9d96a32015-05-07 15:33:33 +1000577 if (SPAPR_IS_PCI_LIOBN(liobn)) {
578 trace_spapr_iommu_pci_put(liobn, ioba, tce, ret);
579 } else {
580 trace_spapr_iommu_put(liobn, ioba, tce, ret);
581 }
David Gibsonedded452012-06-27 14:50:46 +1000582
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +1000583 return ret;
David Gibsonedded452012-06-27 14:50:46 +1000584}
585
David Gibsonce2918c2019-03-06 15:35:37 +1100586static target_ulong get_tce_emu(SpaprTceTable *tcet, target_ulong ioba,
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100587 target_ulong *tce)
588{
Alexey Kardashevskiy1b8ecee2014-05-27 15:36:37 +1000589 unsigned long index = (ioba - tcet->bus_offset) >> tcet->page_shift;
590
591 if (index >= tcet->nb_table) {
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100592 hcall_dprintf("spapr_iommu_get_tce on out-of-bounds IOBA 0x"
593 TARGET_FMT_lx "\n", ioba);
594 return H_PARAMETER;
595 }
596
Alexey Kardashevskiy1b8ecee2014-05-27 15:36:37 +1000597 *tce = tcet->table[index];
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100598
599 return H_SUCCESS;
600}
601
David Gibsonce2918c2019-03-06 15:35:37 +1100602static target_ulong h_get_tce(PowerPCCPU *cpu, SpaprMachineState *spapr,
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100603 target_ulong opcode, target_ulong *args)
604{
605 target_ulong liobn = args[0];
606 target_ulong ioba = args[1];
607 target_ulong tce = 0;
608 target_ulong ret = H_PARAMETER;
David Gibsonce2918c2019-03-06 15:35:37 +1100609 SpaprTceTable *tcet = spapr_tce_find_by_liobn(liobn);
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100610
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100611 if (tcet) {
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000612 hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
613
614 ioba &= page_mask;
615
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100616 ret = get_tce_emu(tcet, ioba, &tce);
617 if (!ret) {
618 args[0] = tce;
619 }
620 }
Alexey Kardashevskiyd9d96a32015-05-07 15:33:33 +1000621 if (SPAPR_IS_PCI_LIOBN(liobn)) {
622 trace_spapr_iommu_pci_get(liobn, ioba, ret, tce);
623 } else {
624 trace_spapr_iommu_get(liobn, ioba, ret, tce);
625 }
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100626
627 return ret;
628}
629
David Gibsonad0ebb92012-06-27 14:50:44 +1000630int spapr_dma_dt(void *fdt, int node_off, const char *propname,
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000631 uint32_t liobn, uint64_t window, uint32_t size)
David Gibsonad0ebb92012-06-27 14:50:44 +1000632{
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000633 uint32_t dma_prop[5];
634 int ret;
David Gibsonad0ebb92012-06-27 14:50:44 +1000635
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000636 dma_prop[0] = cpu_to_be32(liobn);
637 dma_prop[1] = cpu_to_be32(window >> 32);
638 dma_prop[2] = cpu_to_be32(window & 0xFFFFFFFF);
639 dma_prop[3] = 0; /* window size is 32 bits */
640 dma_prop[4] = cpu_to_be32(size);
David Gibsonad0ebb92012-06-27 14:50:44 +1000641
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000642 ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-address-cells", 2);
643 if (ret < 0) {
644 return ret;
645 }
David Gibsonad0ebb92012-06-27 14:50:44 +1000646
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000647 ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-size-cells", 2);
648 if (ret < 0) {
649 return ret;
650 }
651
652 ret = fdt_setprop(fdt, node_off, propname, dma_prop, sizeof(dma_prop));
653 if (ret < 0) {
654 return ret;
David Gibsonad0ebb92012-06-27 14:50:44 +1000655 }
656
657 return 0;
658}
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000659
660int spapr_tcet_dma_dt(void *fdt, int node_off, const char *propname,
David Gibsonce2918c2019-03-06 15:35:37 +1100661 SpaprTceTable *tcet)
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000662{
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200663 if (!tcet) {
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000664 return 0;
665 }
666
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200667 return spapr_dma_dt(fdt, node_off, propname,
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000668 tcet->liobn, 0, tcet->nb_table << tcet->page_shift);
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000669}
Anthony Liguoria83000f2013-07-18 14:32:58 -0500670
671static void spapr_tce_table_class_init(ObjectClass *klass, void *data)
672{
673 DeviceClass *dc = DEVICE_CLASS(klass);
Greg Kurza931ad12017-07-25 19:59:06 +0200674 dc->realize = spapr_tce_table_realize;
Peter Maydelle3d08142024-09-13 15:31:44 +0100675 device_class_set_legacy_reset(dc, spapr_tce_reset);
David Gibson5f9490d2014-12-08 13:48:02 +1100676 dc->unrealize = spapr_tce_table_unrealize;
Thomas Huth1f98e552017-08-17 16:19:16 +0200677 /* Reason: This is just an internal device for handling the hypercalls */
678 dc->user_creatable = false;
Anthony Liguoria83000f2013-07-18 14:32:58 -0500679
680 QLIST_INIT(&spapr_tce_tables);
681
682 /* hcall-tce */
683 spapr_register_hypercall(H_PUT_TCE, h_put_tce);
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100684 spapr_register_hypercall(H_GET_TCE, h_get_tce);
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000685 spapr_register_hypercall(H_PUT_TCE_INDIRECT, h_put_tce_indirect);
686 spapr_register_hypercall(H_STUFF_TCE, h_stuff_tce);
Anthony Liguoria83000f2013-07-18 14:32:58 -0500687}
688
Bernhard Beschow5e78c982022-01-17 15:58:04 +0100689static const TypeInfo spapr_tce_table_info = {
Anthony Liguoria83000f2013-07-18 14:32:58 -0500690 .name = TYPE_SPAPR_TCE_TABLE,
691 .parent = TYPE_DEVICE,
David Gibsonce2918c2019-03-06 15:35:37 +1100692 .instance_size = sizeof(SpaprTceTable),
Anthony Liguoria83000f2013-07-18 14:32:58 -0500693 .class_init = spapr_tce_table_class_init,
Anthony Liguoria83000f2013-07-18 14:32:58 -0500694};
695
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +1000696static void spapr_iommu_memory_region_class_init(ObjectClass *klass, void *data)
697{
698 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass);
699
700 imrc->translate = spapr_tce_translate_iommu;
Alexey Kardashevskiy5f366662019-03-07 16:05:16 +1100701 imrc->replay = spapr_tce_replay;
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +1000702 imrc->get_min_page_size = spapr_tce_get_min_page_size;
703 imrc->notify_flag_changed = spapr_tce_notify_flag_changed;
Alexey Kardashevskiy9ded7802018-02-06 11:08:24 -0700704 imrc->get_attr = spapr_tce_get_attr;
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +1000705}
706
707static const TypeInfo spapr_iommu_memory_region_info = {
708 .parent = TYPE_IOMMU_MEMORY_REGION,
709 .name = TYPE_SPAPR_IOMMU_MEMORY_REGION,
710 .class_init = spapr_iommu_memory_region_class_init,
711};
712
Anthony Liguoria83000f2013-07-18 14:32:58 -0500713static void register_types(void)
714{
715 type_register_static(&spapr_tce_table_info);
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +1000716 type_register_static(&spapr_iommu_memory_region_info);
Anthony Liguoria83000f2013-07-18 14:32:58 -0500717}
718
719type_init(register_types);