blob: 30352df00ea35e53500fc8c07591ec226b9e1f13 [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"
Paolo Bonzini022c62c2012-12-17 18:19:49 +010028#include "exec/address-spaces.h"
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +100029#include "trace.h"
David Gibsonad0ebb92012-06-27 14:50:44 +100030
Paolo Bonzini0d09e412013-02-05 17:06:20 +010031#include "hw/ppc/spapr.h"
Alexey Kardashevskiyee9a5692015-01-29 16:04:58 +110032#include "hw/ppc/spapr_vio.h"
David Gibsonad0ebb92012-06-27 14:50:44 +100033
34#include <libfdt.h>
35
David Gibsonce2918c2019-03-06 15:35:37 +110036enum SpaprTceAccess {
David Gibsonad0ebb92012-06-27 14:50:44 +100037 SPAPR_TCE_FAULT = 0,
38 SPAPR_TCE_RO = 1,
39 SPAPR_TCE_WO = 2,
40 SPAPR_TCE_RW = 3,
41};
42
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +100043#define IOMMU_PAGE_SIZE(shift) (1ULL << (shift))
44#define IOMMU_PAGE_MASK(shift) (~(IOMMU_PAGE_SIZE(shift) - 1))
45
David Gibsonce2918c2019-03-06 15:35:37 +110046static QLIST_HEAD(, SpaprTceTable) spapr_tce_tables;
David Gibsonad0ebb92012-06-27 14:50:44 +100047
David Gibsonce2918c2019-03-06 15:35:37 +110048SpaprTceTable *spapr_tce_find_by_liobn(target_ulong liobn)
David Gibsonad0ebb92012-06-27 14:50:44 +100049{
David Gibsonce2918c2019-03-06 15:35:37 +110050 SpaprTceTable *tcet;
David Gibsonad0ebb92012-06-27 14:50:44 +100051
David Gibsond4261662013-04-29 18:33:51 +000052 if (liobn & 0xFFFFFFFF00000000ULL) {
53 hcall_dprintf("Request for out-of-bounds LIOBN 0x" TARGET_FMT_lx "\n",
54 liobn);
55 return NULL;
56 }
57
David Gibsonad0ebb92012-06-27 14:50:44 +100058 QLIST_FOREACH(tcet, &spapr_tce_tables, list) {
Thomas Huthf9ce8e02015-05-07 15:33:38 +100059 if (tcet->liobn == (uint32_t)liobn) {
David Gibsonad0ebb92012-06-27 14:50:44 +100060 return tcet;
61 }
62 }
63
64 return NULL;
65}
66
Greg Kurz5709af32015-07-02 16:23:12 +100067static IOMMUAccessFlags spapr_tce_iommu_access_flags(uint64_t tce)
68{
69 switch (tce & SPAPR_TCE_RW) {
70 case SPAPR_TCE_FAULT:
71 return IOMMU_NONE;
72 case SPAPR_TCE_RO:
73 return IOMMU_RO;
74 case SPAPR_TCE_WO:
75 return IOMMU_WO;
76 default: /* SPAPR_TCE_RW */
77 return IOMMU_RW;
78 }
79}
80
Alexey Kardashevskiyfec5d3a2016-05-04 16:52:19 +100081static uint64_t *spapr_tce_alloc_table(uint32_t liobn,
82 uint32_t page_shift,
Alexey Kardashevskiyd6ee2a72017-03-10 12:41:13 +110083 uint64_t bus_offset,
Alexey Kardashevskiyfec5d3a2016-05-04 16:52:19 +100084 uint32_t nb_table,
85 int *fd,
86 bool need_vfio)
87{
88 uint64_t *table = NULL;
Alexey Kardashevskiyfec5d3a2016-05-04 16:52:19 +100089
Alexey Kardashevskiyd6ee2a72017-03-10 12:41:13 +110090 if (kvm_enabled()) {
91 table = kvmppc_create_spapr_tce(liobn, page_shift, bus_offset, nb_table,
92 fd, need_vfio);
Alexey Kardashevskiyfec5d3a2016-05-04 16:52:19 +100093 }
94
95 if (!table) {
96 *fd = -1;
Greg Kurzdec4ec42018-11-27 14:05:18 +010097 table = g_new0(uint64_t, nb_table);
Alexey Kardashevskiyfec5d3a2016-05-04 16:52:19 +100098 }
99
100 trace_spapr_iommu_new_table(liobn, table, *fd);
101
102 return table;
103}
104
105static void spapr_tce_free_table(uint64_t *table, int fd, uint32_t nb_table)
106{
107 if (!kvm_enabled() ||
108 (kvmppc_remove_spapr_tce(table, fd, nb_table) != 0)) {
109 g_free(table);
110 }
111}
112
Paolo Bonzini79e2b9a2015-01-21 12:09:14 +0100113/* Called from RCU critical section */
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +1000114static IOMMUTLBEntry spapr_tce_translate_iommu(IOMMUMemoryRegion *iommu,
115 hwaddr addr,
Peter Maydell2c91bcf2018-06-15 14:57:16 +0100116 IOMMUAccessFlags flag,
117 int iommu_idx)
David Gibsonad0ebb92012-06-27 14:50:44 +1000118{
David Gibsonce2918c2019-03-06 15:35:37 +1100119 SpaprTceTable *tcet = container_of(iommu, SpaprTceTable, iommu);
David Gibsonad0ebb92012-06-27 14:50:44 +1000120 uint64_t tce;
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +1000121 IOMMUTLBEntry ret = {
122 .target_as = &address_space_memory,
123 .iova = 0,
124 .translated_addr = 0,
125 .addr_mask = ~(hwaddr)0,
126 .perm = IOMMU_NONE,
127 };
David Gibsonad0ebb92012-06-27 14:50:44 +1000128
Alexey Kardashevskiyee9a5692015-01-29 16:04:58 +1100129 if ((addr >> tcet->page_shift) < tcet->nb_table) {
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +1000130 /* Check if we are in bound */
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000131 hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
132
133 tce = tcet->table[addr >> tcet->page_shift];
134 ret.iova = addr & page_mask;
135 ret.translated_addr = tce & page_mask;
136 ret.addr_mask = ~page_mask;
Greg Kurz5709af32015-07-02 16:23:12 +1000137 ret.perm = spapr_tce_iommu_access_flags(tce);
David Gibson53724ee2012-09-12 16:57:20 +0000138 }
Alexey Kardashevskiya14f04e2019-08-12 15:42:02 +1000139 trace_spapr_iommu_xlate(tcet->liobn, addr, ret.translated_addr, ret.perm,
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +1000140 ret.addr_mask);
David Gibson53724ee2012-09-12 16:57:20 +0000141
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +1000142 return ret;
Paolo Bonzinia71bfbf2013-04-16 15:05:06 +0200143}
144
Alexey Kardashevskiy5f366662019-03-07 16:05:16 +1100145static void spapr_tce_replay(IOMMUMemoryRegion *iommu_mr, IOMMUNotifier *n)
146{
147 MemoryRegion *mr = MEMORY_REGION(iommu_mr);
148 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_GET_CLASS(iommu_mr);
149 hwaddr addr, granularity;
150 IOMMUTLBEntry iotlb;
David Gibsonce2918c2019-03-06 15:35:37 +1100151 SpaprTceTable *tcet = container_of(iommu_mr, SpaprTceTable, iommu);
Alexey Kardashevskiy5f366662019-03-07 16:05:16 +1100152
153 if (tcet->skipping_replay) {
154 return;
155 }
156
157 granularity = memory_region_iommu_get_min_page_size(iommu_mr);
158
159 for (addr = 0; addr < memory_region_size(mr); addr += granularity) {
160 iotlb = imrc->translate(iommu_mr, addr, IOMMU_NONE, n->iommu_idx);
161 if (iotlb.perm != IOMMU_NONE) {
162 n->notify(n, &iotlb);
163 }
164
165 /*
166 * if (2^64 - MR size) < granularity, it's possible to get an
167 * infinite loop here. This should catch such a wraparound.
168 */
169 if ((addr + granularity) < addr) {
170 break;
171 }
172 }
173}
174
Dr. David Alan Gilbert44b1ff32017-09-25 12:29:12 +0100175static int spapr_tce_table_pre_save(void *opaque)
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000176{
David Gibsonce2918c2019-03-06 15:35:37 +1100177 SpaprTceTable *tcet = SPAPR_TCE_TABLE(opaque);
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000178
179 tcet->mig_table = tcet->table;
180 tcet->mig_nb_table = tcet->nb_table;
181
182 trace_spapr_iommu_pre_save(tcet->liobn, tcet->mig_nb_table,
183 tcet->bus_offset, tcet->page_shift);
Dr. David Alan Gilbert44b1ff32017-09-25 12:29:12 +0100184
185 return 0;
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000186}
187
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +1000188static uint64_t spapr_tce_get_min_page_size(IOMMUMemoryRegion *iommu)
Alexey Kardashevskiyf682e9c2016-06-21 11:14:01 +1000189{
David Gibsonce2918c2019-03-06 15:35:37 +1100190 SpaprTceTable *tcet = container_of(iommu, SpaprTceTable, iommu);
Alexey Kardashevskiyf682e9c2016-06-21 11:14:01 +1000191
192 return 1ULL << tcet->page_shift;
193}
194
Alexey Kardashevskiy9ded7802018-02-06 11:08:24 -0700195static int spapr_tce_get_attr(IOMMUMemoryRegion *iommu,
196 enum IOMMUMemoryRegionAttr attr, void *data)
197{
David Gibsonce2918c2019-03-06 15:35:37 +1100198 SpaprTceTable *tcet = container_of(iommu, SpaprTceTable, iommu);
Alexey Kardashevskiy9ded7802018-02-06 11:08:24 -0700199
200 if (attr == IOMMU_ATTR_SPAPR_TCE_FD && kvmppc_has_cap_spapr_vfio()) {
201 *(int *) data = tcet->fd;
202 return 0;
203 }
204
205 return -EINVAL;
206}
207
Eric Auger549d40052019-09-24 10:25:17 +0200208static int spapr_tce_notify_flag_changed(IOMMUMemoryRegion *iommu,
209 IOMMUNotifierFlag old,
210 IOMMUNotifierFlag new,
211 Error **errp)
Alexey Kardashevskiy606b5492016-07-04 13:33:03 +1000212{
David Gibsonce2918c2019-03-06 15:35:37 +1100213 struct SpaprTceTable *tbl = container_of(iommu, SpaprTceTable, iommu);
Alexey Kardashevskiy606b5492016-07-04 13:33:03 +1000214
Peter Xu5bf3d312016-09-23 13:02:27 +0800215 if (old == IOMMU_NOTIFIER_NONE && new != IOMMU_NOTIFIER_NONE) {
216 spapr_tce_set_need_vfio(tbl, true);
217 } else if (old != IOMMU_NOTIFIER_NONE && new == IOMMU_NOTIFIER_NONE) {
218 spapr_tce_set_need_vfio(tbl, false);
219 }
Eric Auger549d40052019-09-24 10:25:17 +0200220 return 0;
Alexey Kardashevskiy606b5492016-07-04 13:33:03 +1000221}
222
Alexey Kardashevskiyee9a5692015-01-29 16:04:58 +1100223static int spapr_tce_table_post_load(void *opaque, int version_id)
224{
David Gibsonce2918c2019-03-06 15:35:37 +1100225 SpaprTceTable *tcet = SPAPR_TCE_TABLE(opaque);
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000226 uint32_t old_nb_table = tcet->nb_table;
227 uint64_t old_bus_offset = tcet->bus_offset;
228 uint32_t old_page_shift = tcet->page_shift;
Alexey Kardashevskiyee9a5692015-01-29 16:04:58 +1100229
230 if (tcet->vdev) {
231 spapr_vio_set_bypass(tcet->vdev, tcet->bypass);
232 }
233
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000234 if (tcet->mig_nb_table != tcet->nb_table) {
235 spapr_tce_table_disable(tcet);
236 }
237
238 if (tcet->mig_nb_table) {
239 if (!tcet->nb_table) {
240 spapr_tce_table_enable(tcet, old_page_shift, old_bus_offset,
241 tcet->mig_nb_table);
242 }
243
244 memcpy(tcet->table, tcet->mig_table,
245 tcet->nb_table * sizeof(tcet->table[0]));
246
247 free(tcet->mig_table);
248 tcet->mig_table = NULL;
249 }
250
251 trace_spapr_iommu_post_load(tcet->liobn, old_nb_table, tcet->nb_table,
252 tcet->bus_offset, tcet->page_shift);
253
Alexey Kardashevskiyee9a5692015-01-29 16:04:58 +1100254 return 0;
255}
256
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000257static bool spapr_tce_table_ex_needed(void *opaque)
258{
David Gibsonce2918c2019-03-06 15:35:37 +1100259 SpaprTceTable *tcet = opaque;
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000260
261 return tcet->bus_offset || tcet->page_shift != 0xC;
262}
263
264static const VMStateDescription vmstate_spapr_tce_table_ex = {
265 .name = "spapr_iommu_ex",
266 .version_id = 1,
267 .minimum_version_id = 1,
268 .needed = spapr_tce_table_ex_needed,
269 .fields = (VMStateField[]) {
David Gibsonce2918c2019-03-06 15:35:37 +1100270 VMSTATE_UINT64(bus_offset, SpaprTceTable),
271 VMSTATE_UINT32(page_shift, SpaprTceTable),
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000272 VMSTATE_END_OF_LIST()
273 },
274};
275
Anthony Liguoria83000f2013-07-18 14:32:58 -0500276static const VMStateDescription vmstate_spapr_tce_table = {
277 .name = "spapr_iommu",
Alexey Kardashevskiy523e7b82014-05-27 15:36:35 +1000278 .version_id = 2,
279 .minimum_version_id = 2,
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000280 .pre_save = spapr_tce_table_pre_save,
Alexey Kardashevskiyee9a5692015-01-29 16:04:58 +1100281 .post_load = spapr_tce_table_post_load,
Alexey Kardashevskiy523e7b82014-05-27 15:36:35 +1000282 .fields = (VMStateField []) {
Anthony Liguoria83000f2013-07-18 14:32:58 -0500283 /* Sanity check */
David Gibsonce2918c2019-03-06 15:35:37 +1100284 VMSTATE_UINT32_EQUAL(liobn, SpaprTceTable, NULL),
Anthony Liguoria83000f2013-07-18 14:32:58 -0500285
286 /* IOMMU state */
David Gibsonce2918c2019-03-06 15:35:37 +1100287 VMSTATE_UINT32(mig_nb_table, SpaprTceTable),
288 VMSTATE_BOOL(bypass, SpaprTceTable),
289 VMSTATE_VARRAY_UINT32_ALLOC(mig_table, SpaprTceTable, mig_nb_table, 0,
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000290 vmstate_info_uint64, uint64_t),
Anthony Liguoria83000f2013-07-18 14:32:58 -0500291
292 VMSTATE_END_OF_LIST()
293 },
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000294 .subsections = (const VMStateDescription*[]) {
295 &vmstate_spapr_tce_table_ex,
296 NULL
297 }
Anthony Liguoria83000f2013-07-18 14:32:58 -0500298};
299
Greg Kurza931ad12017-07-25 19:59:06 +0200300static void spapr_tce_table_realize(DeviceState *dev, Error **errp)
Anthony Liguoria83000f2013-07-18 14:32:58 -0500301{
David Gibsonce2918c2019-03-06 15:35:37 +1100302 SpaprTceTable *tcet = SPAPR_TCE_TABLE(dev);
Alexey Kardashevskiyb4b6eb72016-06-01 18:57:35 +1000303 Object *tcetobj = OBJECT(tcet);
Greg Kurza205a052017-07-25 19:58:40 +0200304 gchar *tmp;
Anthony Liguoria83000f2013-07-18 14:32:58 -0500305
Alexey Kardashevskiyfec5d3a2016-05-04 16:52:19 +1000306 tcet->fd = -1;
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000307 tcet->need_vfio = false;
Greg Kurza205a052017-07-25 19:58:40 +0200308 tmp = g_strdup_printf("tce-root-%x", tcet->liobn);
Alexey Kardashevskiyb4b6eb72016-06-01 18:57:35 +1000309 memory_region_init(&tcet->root, tcetobj, tmp, UINT64_MAX);
Greg Kurza205a052017-07-25 19:58:40 +0200310 g_free(tmp);
Alexey Kardashevskiyb4b6eb72016-06-01 18:57:35 +1000311
Greg Kurza205a052017-07-25 19:58:40 +0200312 tmp = g_strdup_printf("tce-iommu-%x", tcet->liobn);
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +1000313 memory_region_init_iommu(&tcet->iommu, sizeof(tcet->iommu),
314 TYPE_SPAPR_IOMMU_MEMORY_REGION,
315 tcetobj, tmp, 0);
Greg Kurza205a052017-07-25 19:58:40 +0200316 g_free(tmp);
Anthony Liguoria83000f2013-07-18 14:32:58 -0500317
318 QLIST_INSERT_HEAD(&spapr_tce_tables, tcet, list);
319
Marc-André Lureau3cad4052019-08-28 16:02:32 +0400320 vmstate_register(VMSTATE_IF(tcet), tcet->liobn, &vmstate_spapr_tce_table,
Alexey Kardashevskiy00d4f522014-05-12 18:46:32 +1000321 tcet);
Anthony Liguoria83000f2013-07-18 14:32:58 -0500322}
323
David Gibsonce2918c2019-03-06 15:35:37 +1100324void spapr_tce_set_need_vfio(SpaprTceTable *tcet, bool need_vfio)
David Gibsonc10325d2015-10-01 10:46:10 +1000325{
326 size_t table_size = tcet->nb_table * sizeof(uint64_t);
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000327 uint64_t *oldtable;
328 int newfd = -1;
David Gibsonc10325d2015-10-01 10:46:10 +1000329
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000330 g_assert(need_vfio != tcet->need_vfio);
David Gibsonc10325d2015-10-01 10:46:10 +1000331
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000332 tcet->need_vfio = need_vfio;
David Gibsonc10325d2015-10-01 10:46:10 +1000333
Alexey Kardashevskiy9ded7802018-02-06 11:08:24 -0700334 if (!need_vfio || (tcet->fd != -1 && kvmppc_has_cap_spapr_vfio())) {
335 return;
336 }
337
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000338 oldtable = tcet->table;
David Gibsonc10325d2015-10-01 10:46:10 +1000339
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000340 tcet->table = spapr_tce_alloc_table(tcet->liobn,
341 tcet->page_shift,
342 tcet->bus_offset,
343 tcet->nb_table,
344 &newfd,
345 need_vfio);
346 memcpy(tcet->table, oldtable, table_size);
David Gibsonc10325d2015-10-01 10:46:10 +1000347
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000348 spapr_tce_free_table(oldtable, tcet->fd, tcet->nb_table);
David Gibsonc10325d2015-10-01 10:46:10 +1000349
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000350 tcet->fd = newfd;
David Gibsonc10325d2015-10-01 10:46:10 +1000351}
352
David Gibsonce2918c2019-03-06 15:35:37 +1100353SpaprTceTable *spapr_tce_new_table(DeviceState *owner, uint32_t liobn)
David Gibsonad0ebb92012-06-27 14:50:44 +1000354{
David Gibsonce2918c2019-03-06 15:35:37 +1100355 SpaprTceTable *tcet;
Greg Kurza205a052017-07-25 19:58:40 +0200356 gchar *tmp;
David Gibsonad0ebb92012-06-27 14:50:44 +1000357
David Gibson8b1853e2012-12-03 16:42:13 +0000358 if (spapr_tce_find_by_liobn(liobn)) {
Cédric Le Goaterce9863b2016-08-02 19:38:00 +0200359 error_report("Attempted to create TCE table with duplicate"
360 " LIOBN 0x%x", liobn);
David Gibson8b1853e2012-12-03 16:42:13 +0000361 return NULL;
362 }
363
Anthony Liguoria83000f2013-07-18 14:32:58 -0500364 tcet = SPAPR_TCE_TABLE(object_new(TYPE_SPAPR_TCE_TABLE));
David Gibsonad0ebb92012-06-27 14:50:44 +1000365 tcet->liobn = liobn;
David Gibsonad0ebb92012-06-27 14:50:44 +1000366
Greg Kurza205a052017-07-25 19:58:40 +0200367 tmp = g_strdup_printf("tce-table-%x", liobn);
Markus Armbrusterd2623122020-05-05 17:29:22 +0200368 object_property_add_child(OBJECT(owner), tmp, OBJECT(tcet));
Greg Kurza205a052017-07-25 19:58:40 +0200369 g_free(tmp);
Michael Roth8dc97852017-07-25 20:00:09 +0200370 object_unref(OBJECT(tcet));
David Gibsonad0ebb92012-06-27 14:50:44 +1000371
Markus Armbrusterce189ab2020-06-10 07:32:45 +0200372 qdev_realize(DEVICE(tcet), NULL, NULL);
David Gibsonad0ebb92012-06-27 14:50:44 +1000373
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200374 return tcet;
375}
376
David Gibsonce2918c2019-03-06 15:35:37 +1100377void spapr_tce_table_enable(SpaprTceTable *tcet,
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000378 uint32_t page_shift, uint64_t bus_offset,
379 uint32_t nb_table)
380{
381 if (tcet->nb_table) {
Alistair Francis3dc6f862017-07-12 06:57:41 -0700382 warn_report("trying to enable already enabled TCE table");
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000383 return;
384 }
385
386 tcet->bus_offset = bus_offset;
387 tcet->page_shift = page_shift;
388 tcet->nb_table = nb_table;
389 tcet->table = spapr_tce_alloc_table(tcet->liobn,
390 tcet->page_shift,
Alexey Kardashevskiyd6ee2a72017-03-10 12:41:13 +1100391 tcet->bus_offset,
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000392 tcet->nb_table,
393 &tcet->fd,
394 tcet->need_vfio);
395
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +1000396 memory_region_set_size(MEMORY_REGION(&tcet->iommu),
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000397 (uint64_t)tcet->nb_table << tcet->page_shift);
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +1000398 memory_region_add_subregion(&tcet->root, tcet->bus_offset,
399 MEMORY_REGION(&tcet->iommu));
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000400}
401
David Gibsonce2918c2019-03-06 15:35:37 +1100402void spapr_tce_table_disable(SpaprTceTable *tcet)
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000403{
404 if (!tcet->nb_table) {
405 return;
406 }
407
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +1000408 memory_region_del_subregion(&tcet->root, MEMORY_REGION(&tcet->iommu));
409 memory_region_set_size(MEMORY_REGION(&tcet->iommu), 0);
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000410
411 spapr_tce_free_table(tcet->table, tcet->fd, tcet->nb_table);
412 tcet->fd = -1;
413 tcet->table = NULL;
414 tcet->bus_offset = 0;
415 tcet->page_shift = 0;
416 tcet->nb_table = 0;
417}
418
Markus Armbrusterb69c3c22020-05-05 17:29:24 +0200419static void spapr_tce_table_unrealize(DeviceState *dev)
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200420{
David Gibsonce2918c2019-03-06 15:35:37 +1100421 SpaprTceTable *tcet = SPAPR_TCE_TABLE(dev);
Anthony Liguoria83000f2013-07-18 14:32:58 -0500422
Marc-André Lureau3cad4052019-08-28 16:02:32 +0400423 vmstate_unregister(VMSTATE_IF(tcet), &vmstate_spapr_tce_table, tcet);
Greg Kurzea359d22017-07-25 20:00:22 +0200424
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200425 QLIST_REMOVE(tcet, list);
426
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000427 spapr_tce_table_disable(tcet);
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200428}
429
David Gibsonce2918c2019-03-06 15:35:37 +1100430MemoryRegion *spapr_tce_get_iommu(SpaprTceTable *tcet)
Paolo Bonzinia84bb432013-04-11 12:35:33 +0200431{
Alexey Kardashevskiyb4b6eb72016-06-01 18:57:35 +1000432 return &tcet->root;
Paolo Bonzinia84bb432013-04-11 12:35:33 +0200433}
434
Anthony Liguoria83000f2013-07-18 14:32:58 -0500435static void spapr_tce_reset(DeviceState *dev)
David Gibsoneddeed22012-09-12 16:57:14 +0000436{
David Gibsonce2918c2019-03-06 15:35:37 +1100437 SpaprTceTable *tcet = SPAPR_TCE_TABLE(dev);
Alexey Kardashevskiy523e7b82014-05-27 15:36:35 +1000438 size_t table_size = tcet->nb_table * sizeof(uint64_t);
David Gibsoneddeed22012-09-12 16:57:14 +0000439
David Gibson57c0eb12016-08-08 10:06:25 +1000440 if (tcet->nb_table) {
441 memset(tcet->table, 0, table_size);
442 }
David Gibsoneddeed22012-09-12 16:57:14 +0000443}
444
David Gibsonce2918c2019-03-06 15:35:37 +1100445static target_ulong put_tce_emu(SpaprTceTable *tcet, target_ulong ioba,
David Gibsonedded452012-06-27 14:50:46 +1000446 target_ulong tce)
David Gibsonad0ebb92012-06-27 14:50:44 +1000447{
Eugenio Pérez5039caf2020-11-16 17:55:03 +0100448 IOMMUTLBEvent event;
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000449 hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
Alexey Kardashevskiy1b8ecee2014-05-27 15:36:37 +1000450 unsigned long index = (ioba - tcet->bus_offset) >> tcet->page_shift;
David Gibsonad0ebb92012-06-27 14:50:44 +1000451
Alexey Kardashevskiy1b8ecee2014-05-27 15:36:37 +1000452 if (index >= tcet->nb_table) {
David Gibsonb55519a2013-04-29 18:33:52 +0000453 hcall_dprintf("spapr_vio_put_tce on out-of-bounds IOBA 0x"
David Gibsonad0ebb92012-06-27 14:50:44 +1000454 TARGET_FMT_lx "\n", ioba);
455 return H_PARAMETER;
456 }
457
Alexey Kardashevskiy1b8ecee2014-05-27 15:36:37 +1000458 tcet->table[index] = tce;
David Gibsonad0ebb92012-06-27 14:50:44 +1000459
Eugenio Pérez5039caf2020-11-16 17:55:03 +0100460 event.entry.target_as = &address_space_memory,
461 event.entry.iova = (ioba - tcet->bus_offset) & page_mask;
462 event.entry.translated_addr = tce & page_mask;
463 event.entry.addr_mask = ~page_mask;
464 event.entry.perm = spapr_tce_iommu_access_flags(tce);
465 event.type = event.entry.perm ? IOMMU_NOTIFIER_MAP : IOMMU_NOTIFIER_UNMAP;
466 memory_region_notify_iommu(&tcet->iommu, 0, event);
Paolo Bonzinia84bb432013-04-11 12:35:33 +0200467
David Gibsonad0ebb92012-06-27 14:50:44 +1000468 return H_SUCCESS;
469}
470
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000471static target_ulong h_put_tce_indirect(PowerPCCPU *cpu,
David Gibsonce2918c2019-03-06 15:35:37 +1100472 SpaprMachineState *spapr,
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000473 target_ulong opcode, target_ulong *args)
474{
475 int i;
476 target_ulong liobn = args[0];
477 target_ulong ioba = args[1];
478 target_ulong ioba1 = ioba;
479 target_ulong tce_list = args[2];
480 target_ulong npages = args[3];
Alexey Kardashevskiyf1215ea2015-05-07 15:33:29 +1000481 target_ulong ret = H_PARAMETER, tce = 0;
David Gibsonce2918c2019-03-06 15:35:37 +1100482 SpaprTceTable *tcet = spapr_tce_find_by_liobn(liobn);
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000483 CPUState *cs = CPU(cpu);
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000484 hwaddr page_mask, page_size;
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000485
486 if (!tcet) {
487 return H_PARAMETER;
488 }
489
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000490 if ((npages > 512) || (tce_list & SPAPR_TCE_PAGE_MASK)) {
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000491 return H_PARAMETER;
492 }
493
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000494 page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
495 page_size = IOMMU_PAGE_SIZE(tcet->page_shift);
496 ioba &= page_mask;
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000497
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000498 for (i = 0; i < npages; ++i, ioba += page_size) {
Greg Kurz4d9ab7d2015-07-02 16:23:11 +1000499 tce = ldq_be_phys(cs->as, tce_list + i * sizeof(target_ulong));
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000500
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000501 ret = put_tce_emu(tcet, ioba, tce);
502 if (ret) {
503 break;
504 }
505 }
506
507 /* Trace last successful or the first problematic entry */
508 i = i ? (i - 1) : 0;
Alexey Kardashevskiyd9d96a32015-05-07 15:33:33 +1000509 if (SPAPR_IS_PCI_LIOBN(liobn)) {
510 trace_spapr_iommu_pci_indirect(liobn, ioba1, tce_list, i, tce, ret);
511 } else {
512 trace_spapr_iommu_indirect(liobn, ioba1, tce_list, i, tce, ret);
513 }
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000514 return ret;
515}
516
David Gibsonce2918c2019-03-06 15:35:37 +1100517static target_ulong h_stuff_tce(PowerPCCPU *cpu, SpaprMachineState *spapr,
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000518 target_ulong opcode, target_ulong *args)
519{
520 int i;
521 target_ulong liobn = args[0];
522 target_ulong ioba = args[1];
523 target_ulong tce_value = args[2];
524 target_ulong npages = args[3];
525 target_ulong ret = H_PARAMETER;
David Gibsonce2918c2019-03-06 15:35:37 +1100526 SpaprTceTable *tcet = spapr_tce_find_by_liobn(liobn);
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000527 hwaddr page_mask, page_size;
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000528
529 if (!tcet) {
530 return H_PARAMETER;
531 }
532
533 if (npages > tcet->nb_table) {
534 return H_PARAMETER;
535 }
536
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000537 page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
538 page_size = IOMMU_PAGE_SIZE(tcet->page_shift);
539 ioba &= page_mask;
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000540
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000541 for (i = 0; i < npages; ++i, ioba += page_size) {
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000542 ret = put_tce_emu(tcet, ioba, tce_value);
543 if (ret) {
544 break;
545 }
546 }
Alexey Kardashevskiyd9d96a32015-05-07 15:33:33 +1000547 if (SPAPR_IS_PCI_LIOBN(liobn)) {
548 trace_spapr_iommu_pci_stuff(liobn, ioba, tce_value, npages, ret);
549 } else {
550 trace_spapr_iommu_stuff(liobn, ioba, tce_value, npages, ret);
551 }
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000552
553 return ret;
554}
555
David Gibsonce2918c2019-03-06 15:35:37 +1100556static target_ulong h_put_tce(PowerPCCPU *cpu, SpaprMachineState *spapr,
David Gibsonedded452012-06-27 14:50:46 +1000557 target_ulong opcode, target_ulong *args)
558{
559 target_ulong liobn = args[0];
560 target_ulong ioba = args[1];
561 target_ulong tce = args[2];
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +1000562 target_ulong ret = H_PARAMETER;
David Gibsonce2918c2019-03-06 15:35:37 +1100563 SpaprTceTable *tcet = spapr_tce_find_by_liobn(liobn);
David Gibsonedded452012-06-27 14:50:46 +1000564
David Gibsonedded452012-06-27 14:50:46 +1000565 if (tcet) {
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000566 hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
567
568 ioba &= page_mask;
569
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +1000570 ret = put_tce_emu(tcet, ioba, tce);
David Gibsonedded452012-06-27 14:50:46 +1000571 }
Alexey Kardashevskiyd9d96a32015-05-07 15:33:33 +1000572 if (SPAPR_IS_PCI_LIOBN(liobn)) {
573 trace_spapr_iommu_pci_put(liobn, ioba, tce, ret);
574 } else {
575 trace_spapr_iommu_put(liobn, ioba, tce, ret);
576 }
David Gibsonedded452012-06-27 14:50:46 +1000577
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +1000578 return ret;
David Gibsonedded452012-06-27 14:50:46 +1000579}
580
David Gibsonce2918c2019-03-06 15:35:37 +1100581static target_ulong get_tce_emu(SpaprTceTable *tcet, target_ulong ioba,
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100582 target_ulong *tce)
583{
Alexey Kardashevskiy1b8ecee2014-05-27 15:36:37 +1000584 unsigned long index = (ioba - tcet->bus_offset) >> tcet->page_shift;
585
586 if (index >= tcet->nb_table) {
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100587 hcall_dprintf("spapr_iommu_get_tce on out-of-bounds IOBA 0x"
588 TARGET_FMT_lx "\n", ioba);
589 return H_PARAMETER;
590 }
591
Alexey Kardashevskiy1b8ecee2014-05-27 15:36:37 +1000592 *tce = tcet->table[index];
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100593
594 return H_SUCCESS;
595}
596
David Gibsonce2918c2019-03-06 15:35:37 +1100597static target_ulong h_get_tce(PowerPCCPU *cpu, SpaprMachineState *spapr,
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100598 target_ulong opcode, target_ulong *args)
599{
600 target_ulong liobn = args[0];
601 target_ulong ioba = args[1];
602 target_ulong tce = 0;
603 target_ulong ret = H_PARAMETER;
David Gibsonce2918c2019-03-06 15:35:37 +1100604 SpaprTceTable *tcet = spapr_tce_find_by_liobn(liobn);
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100605
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100606 if (tcet) {
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000607 hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
608
609 ioba &= page_mask;
610
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100611 ret = get_tce_emu(tcet, ioba, &tce);
612 if (!ret) {
613 args[0] = tce;
614 }
615 }
Alexey Kardashevskiyd9d96a32015-05-07 15:33:33 +1000616 if (SPAPR_IS_PCI_LIOBN(liobn)) {
617 trace_spapr_iommu_pci_get(liobn, ioba, ret, tce);
618 } else {
619 trace_spapr_iommu_get(liobn, ioba, ret, tce);
620 }
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100621
622 return ret;
623}
624
David Gibsonad0ebb92012-06-27 14:50:44 +1000625int spapr_dma_dt(void *fdt, int node_off, const char *propname,
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000626 uint32_t liobn, uint64_t window, uint32_t size)
David Gibsonad0ebb92012-06-27 14:50:44 +1000627{
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000628 uint32_t dma_prop[5];
629 int ret;
David Gibsonad0ebb92012-06-27 14:50:44 +1000630
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000631 dma_prop[0] = cpu_to_be32(liobn);
632 dma_prop[1] = cpu_to_be32(window >> 32);
633 dma_prop[2] = cpu_to_be32(window & 0xFFFFFFFF);
634 dma_prop[3] = 0; /* window size is 32 bits */
635 dma_prop[4] = cpu_to_be32(size);
David Gibsonad0ebb92012-06-27 14:50:44 +1000636
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000637 ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-address-cells", 2);
638 if (ret < 0) {
639 return ret;
640 }
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-size-cells", 2);
643 if (ret < 0) {
644 return ret;
645 }
646
647 ret = fdt_setprop(fdt, node_off, propname, dma_prop, sizeof(dma_prop));
648 if (ret < 0) {
649 return ret;
David Gibsonad0ebb92012-06-27 14:50:44 +1000650 }
651
652 return 0;
653}
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000654
655int spapr_tcet_dma_dt(void *fdt, int node_off, const char *propname,
David Gibsonce2918c2019-03-06 15:35:37 +1100656 SpaprTceTable *tcet)
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000657{
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200658 if (!tcet) {
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000659 return 0;
660 }
661
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200662 return spapr_dma_dt(fdt, node_off, propname,
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000663 tcet->liobn, 0, tcet->nb_table << tcet->page_shift);
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000664}
Anthony Liguoria83000f2013-07-18 14:32:58 -0500665
666static void spapr_tce_table_class_init(ObjectClass *klass, void *data)
667{
668 DeviceClass *dc = DEVICE_CLASS(klass);
Greg Kurza931ad12017-07-25 19:59:06 +0200669 dc->realize = spapr_tce_table_realize;
Anthony Liguoria83000f2013-07-18 14:32:58 -0500670 dc->reset = spapr_tce_reset;
David Gibson5f9490d2014-12-08 13:48:02 +1100671 dc->unrealize = spapr_tce_table_unrealize;
Thomas Huth1f98e552017-08-17 16:19:16 +0200672 /* Reason: This is just an internal device for handling the hypercalls */
673 dc->user_creatable = false;
Anthony Liguoria83000f2013-07-18 14:32:58 -0500674
675 QLIST_INIT(&spapr_tce_tables);
676
677 /* hcall-tce */
678 spapr_register_hypercall(H_PUT_TCE, h_put_tce);
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100679 spapr_register_hypercall(H_GET_TCE, h_get_tce);
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000680 spapr_register_hypercall(H_PUT_TCE_INDIRECT, h_put_tce_indirect);
681 spapr_register_hypercall(H_STUFF_TCE, h_stuff_tce);
Anthony Liguoria83000f2013-07-18 14:32:58 -0500682}
683
684static TypeInfo spapr_tce_table_info = {
685 .name = TYPE_SPAPR_TCE_TABLE,
686 .parent = TYPE_DEVICE,
David Gibsonce2918c2019-03-06 15:35:37 +1100687 .instance_size = sizeof(SpaprTceTable),
Anthony Liguoria83000f2013-07-18 14:32:58 -0500688 .class_init = spapr_tce_table_class_init,
Anthony Liguoria83000f2013-07-18 14:32:58 -0500689};
690
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +1000691static void spapr_iommu_memory_region_class_init(ObjectClass *klass, void *data)
692{
693 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass);
694
695 imrc->translate = spapr_tce_translate_iommu;
Alexey Kardashevskiy5f366662019-03-07 16:05:16 +1100696 imrc->replay = spapr_tce_replay;
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +1000697 imrc->get_min_page_size = spapr_tce_get_min_page_size;
698 imrc->notify_flag_changed = spapr_tce_notify_flag_changed;
Alexey Kardashevskiy9ded7802018-02-06 11:08:24 -0700699 imrc->get_attr = spapr_tce_get_attr;
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +1000700}
701
702static const TypeInfo spapr_iommu_memory_region_info = {
703 .parent = TYPE_IOMMU_MEMORY_REGION,
704 .name = TYPE_SPAPR_IOMMU_MEMORY_REGION,
705 .class_init = spapr_iommu_memory_region_class_init,
706};
707
Anthony Liguoria83000f2013-07-18 14:32:58 -0500708static void register_types(void)
709{
710 type_register_static(&spapr_tce_table_info);
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +1000711 type_register_static(&spapr_iommu_memory_region_info);
Anthony Liguoria83000f2013-07-18 14:32:58 -0500712}
713
714type_init(register_types);