blob: 1b0880ac9edb39d1f9fb1a31aa25746e1bea7687 [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
9 * version 2 of the License, or (at your option) any later version.
10 *
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 */
Peter Maydell0d755902016-01-26 18:16:58 +000019#include "qemu/osdep.h"
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +100020#include "qemu/error-report.h"
Paolo Bonzini83c9f4c2013-02-04 15:40:22 +010021#include "hw/hw.h"
Paolo Bonzini03dd0242015-12-15 13:16:16 +010022#include "qemu/log.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010023#include "sysemu/kvm.h"
Paolo Bonzini83c9f4c2013-02-04 15:40:22 +010024#include "hw/qdev.h"
David Gibsonad0ebb92012-06-27 14:50:44 +100025#include "kvm_ppc.h"
Paolo Bonzini9c17d612012-12-17 18:20:04 +010026#include "sysemu/dma.h"
Paolo Bonzini022c62c2012-12-17 18:19:49 +010027#include "exec/address-spaces.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 Gibsonad0ebb92012-06-27 14:50:44 +100035enum sPAPRTCEAccess {
36 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
Stefan Weil6a0a70b2014-05-02 22:34:40 +020045static QLIST_HEAD(spapr_tce_tables, sPAPRTCETable) spapr_tce_tables;
David Gibsonad0ebb92012-06-27 14:50:44 +100046
Thomas Huthf9ce8e02015-05-07 15:33:38 +100047sPAPRTCETable *spapr_tce_find_by_liobn(target_ulong liobn)
David Gibsonad0ebb92012-06-27 14:50:44 +100048{
49 sPAPRTCETable *tcet;
50
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;
96 table = g_malloc0(nb_table * sizeof(uint64_t));
97 }
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{
Paolo Bonzinia84bb432013-04-11 12:35:33 +0200118 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 Kardashevskiy7e472262013-08-29 18:05:00 +1000138 trace_spapr_iommu_xlate(tcet->liobn, addr, ret.iova, ret.perm,
139 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
Dr. David Alan Gilbert44b1ff32017-09-25 12:29:12 +0100144static int spapr_tce_table_pre_save(void *opaque)
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000145{
146 sPAPRTCETable *tcet = SPAPR_TCE_TABLE(opaque);
147
148 tcet->mig_table = tcet->table;
149 tcet->mig_nb_table = tcet->nb_table;
150
151 trace_spapr_iommu_pre_save(tcet->liobn, tcet->mig_nb_table,
152 tcet->bus_offset, tcet->page_shift);
Dr. David Alan Gilbert44b1ff32017-09-25 12:29:12 +0100153
154 return 0;
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000155}
156
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +1000157static uint64_t spapr_tce_get_min_page_size(IOMMUMemoryRegion *iommu)
Alexey Kardashevskiyf682e9c2016-06-21 11:14:01 +1000158{
159 sPAPRTCETable *tcet = container_of(iommu, sPAPRTCETable, iommu);
160
161 return 1ULL << tcet->page_shift;
162}
163
Alexey Kardashevskiy9ded7802018-02-06 11:08:24 -0700164static int spapr_tce_get_attr(IOMMUMemoryRegion *iommu,
165 enum IOMMUMemoryRegionAttr attr, void *data)
166{
167 sPAPRTCETable *tcet = container_of(iommu, sPAPRTCETable, iommu);
168
169 if (attr == IOMMU_ATTR_SPAPR_TCE_FD && kvmppc_has_cap_spapr_vfio()) {
170 *(int *) data = tcet->fd;
171 return 0;
172 }
173
174 return -EINVAL;
175}
176
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +1000177static void spapr_tce_notify_flag_changed(IOMMUMemoryRegion *iommu,
Peter Xu5bf3d312016-09-23 13:02:27 +0800178 IOMMUNotifierFlag old,
179 IOMMUNotifierFlag new)
Alexey Kardashevskiy606b5492016-07-04 13:33:03 +1000180{
Peter Xu5bf3d312016-09-23 13:02:27 +0800181 struct sPAPRTCETable *tbl = container_of(iommu, sPAPRTCETable, iommu);
Alexey Kardashevskiy606b5492016-07-04 13:33:03 +1000182
Peter Xu5bf3d312016-09-23 13:02:27 +0800183 if (old == IOMMU_NOTIFIER_NONE && new != IOMMU_NOTIFIER_NONE) {
184 spapr_tce_set_need_vfio(tbl, true);
185 } else if (old != IOMMU_NOTIFIER_NONE && new == IOMMU_NOTIFIER_NONE) {
186 spapr_tce_set_need_vfio(tbl, false);
187 }
Alexey Kardashevskiy606b5492016-07-04 13:33:03 +1000188}
189
Alexey Kardashevskiyee9a5692015-01-29 16:04:58 +1100190static int spapr_tce_table_post_load(void *opaque, int version_id)
191{
192 sPAPRTCETable *tcet = SPAPR_TCE_TABLE(opaque);
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000193 uint32_t old_nb_table = tcet->nb_table;
194 uint64_t old_bus_offset = tcet->bus_offset;
195 uint32_t old_page_shift = tcet->page_shift;
Alexey Kardashevskiyee9a5692015-01-29 16:04:58 +1100196
197 if (tcet->vdev) {
198 spapr_vio_set_bypass(tcet->vdev, tcet->bypass);
199 }
200
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000201 if (tcet->mig_nb_table != tcet->nb_table) {
202 spapr_tce_table_disable(tcet);
203 }
204
205 if (tcet->mig_nb_table) {
206 if (!tcet->nb_table) {
207 spapr_tce_table_enable(tcet, old_page_shift, old_bus_offset,
208 tcet->mig_nb_table);
209 }
210
211 memcpy(tcet->table, tcet->mig_table,
212 tcet->nb_table * sizeof(tcet->table[0]));
213
214 free(tcet->mig_table);
215 tcet->mig_table = NULL;
216 }
217
218 trace_spapr_iommu_post_load(tcet->liobn, old_nb_table, tcet->nb_table,
219 tcet->bus_offset, tcet->page_shift);
220
Alexey Kardashevskiyee9a5692015-01-29 16:04:58 +1100221 return 0;
222}
223
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000224static bool spapr_tce_table_ex_needed(void *opaque)
225{
226 sPAPRTCETable *tcet = opaque;
227
228 return tcet->bus_offset || tcet->page_shift != 0xC;
229}
230
231static const VMStateDescription vmstate_spapr_tce_table_ex = {
232 .name = "spapr_iommu_ex",
233 .version_id = 1,
234 .minimum_version_id = 1,
235 .needed = spapr_tce_table_ex_needed,
236 .fields = (VMStateField[]) {
237 VMSTATE_UINT64(bus_offset, sPAPRTCETable),
238 VMSTATE_UINT32(page_shift, sPAPRTCETable),
239 VMSTATE_END_OF_LIST()
240 },
241};
242
Anthony Liguoria83000f2013-07-18 14:32:58 -0500243static const VMStateDescription vmstate_spapr_tce_table = {
244 .name = "spapr_iommu",
Alexey Kardashevskiy523e7b82014-05-27 15:36:35 +1000245 .version_id = 2,
246 .minimum_version_id = 2,
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000247 .pre_save = spapr_tce_table_pre_save,
Alexey Kardashevskiyee9a5692015-01-29 16:04:58 +1100248 .post_load = spapr_tce_table_post_load,
Alexey Kardashevskiy523e7b82014-05-27 15:36:35 +1000249 .fields = (VMStateField []) {
Anthony Liguoria83000f2013-07-18 14:32:58 -0500250 /* Sanity check */
Halil Pasicd2164ad2017-06-23 16:48:23 +0200251 VMSTATE_UINT32_EQUAL(liobn, sPAPRTCETable, NULL),
Anthony Liguoria83000f2013-07-18 14:32:58 -0500252
253 /* IOMMU state */
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000254 VMSTATE_UINT32(mig_nb_table, sPAPRTCETable),
Anthony Liguoria83000f2013-07-18 14:32:58 -0500255 VMSTATE_BOOL(bypass, sPAPRTCETable),
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000256 VMSTATE_VARRAY_UINT32_ALLOC(mig_table, sPAPRTCETable, mig_nb_table, 0,
257 vmstate_info_uint64, uint64_t),
Anthony Liguoria83000f2013-07-18 14:32:58 -0500258
259 VMSTATE_END_OF_LIST()
260 },
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000261 .subsections = (const VMStateDescription*[]) {
262 &vmstate_spapr_tce_table_ex,
263 NULL
264 }
Anthony Liguoria83000f2013-07-18 14:32:58 -0500265};
266
Greg Kurza931ad12017-07-25 19:59:06 +0200267static void spapr_tce_table_realize(DeviceState *dev, Error **errp)
Anthony Liguoria83000f2013-07-18 14:32:58 -0500268{
269 sPAPRTCETable *tcet = SPAPR_TCE_TABLE(dev);
Alexey Kardashevskiyb4b6eb72016-06-01 18:57:35 +1000270 Object *tcetobj = OBJECT(tcet);
Greg Kurza205a052017-07-25 19:58:40 +0200271 gchar *tmp;
Anthony Liguoria83000f2013-07-18 14:32:58 -0500272
Alexey Kardashevskiyfec5d3a2016-05-04 16:52:19 +1000273 tcet->fd = -1;
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000274 tcet->need_vfio = false;
Greg Kurza205a052017-07-25 19:58:40 +0200275 tmp = g_strdup_printf("tce-root-%x", tcet->liobn);
Alexey Kardashevskiyb4b6eb72016-06-01 18:57:35 +1000276 memory_region_init(&tcet->root, tcetobj, tmp, UINT64_MAX);
Greg Kurza205a052017-07-25 19:58:40 +0200277 g_free(tmp);
Alexey Kardashevskiyb4b6eb72016-06-01 18:57:35 +1000278
Greg Kurza205a052017-07-25 19:58:40 +0200279 tmp = g_strdup_printf("tce-iommu-%x", tcet->liobn);
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +1000280 memory_region_init_iommu(&tcet->iommu, sizeof(tcet->iommu),
281 TYPE_SPAPR_IOMMU_MEMORY_REGION,
282 tcetobj, tmp, 0);
Greg Kurza205a052017-07-25 19:58:40 +0200283 g_free(tmp);
Anthony Liguoria83000f2013-07-18 14:32:58 -0500284
285 QLIST_INSERT_HEAD(&spapr_tce_tables, tcet, list);
286
Alexey Kardashevskiy00d4f522014-05-12 18:46:32 +1000287 vmstate_register(DEVICE(tcet), tcet->liobn, &vmstate_spapr_tce_table,
288 tcet);
Anthony Liguoria83000f2013-07-18 14:32:58 -0500289}
290
David Gibsonc10325d2015-10-01 10:46:10 +1000291void spapr_tce_set_need_vfio(sPAPRTCETable *tcet, bool need_vfio)
292{
293 size_t table_size = tcet->nb_table * sizeof(uint64_t);
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000294 uint64_t *oldtable;
295 int newfd = -1;
David Gibsonc10325d2015-10-01 10:46:10 +1000296
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000297 g_assert(need_vfio != tcet->need_vfio);
David Gibsonc10325d2015-10-01 10:46:10 +1000298
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000299 tcet->need_vfio = need_vfio;
David Gibsonc10325d2015-10-01 10:46:10 +1000300
Alexey Kardashevskiy9ded7802018-02-06 11:08:24 -0700301 if (!need_vfio || (tcet->fd != -1 && kvmppc_has_cap_spapr_vfio())) {
302 return;
303 }
304
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000305 oldtable = tcet->table;
David Gibsonc10325d2015-10-01 10:46:10 +1000306
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000307 tcet->table = spapr_tce_alloc_table(tcet->liobn,
308 tcet->page_shift,
309 tcet->bus_offset,
310 tcet->nb_table,
311 &newfd,
312 need_vfio);
313 memcpy(tcet->table, oldtable, table_size);
David Gibsonc10325d2015-10-01 10:46:10 +1000314
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000315 spapr_tce_free_table(oldtable, tcet->fd, tcet->nb_table);
David Gibsonc10325d2015-10-01 10:46:10 +1000316
Alexey Kardashevskiyf5509b62017-07-20 17:22:29 +1000317 tcet->fd = newfd;
David Gibsonc10325d2015-10-01 10:46:10 +1000318}
319
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000320sPAPRTCETable *spapr_tce_new_table(DeviceState *owner, uint32_t liobn)
David Gibsonad0ebb92012-06-27 14:50:44 +1000321{
322 sPAPRTCETable *tcet;
Greg Kurza205a052017-07-25 19:58:40 +0200323 gchar *tmp;
David Gibsonad0ebb92012-06-27 14:50:44 +1000324
David Gibson8b1853e2012-12-03 16:42:13 +0000325 if (spapr_tce_find_by_liobn(liobn)) {
Cédric Le Goaterce9863b2016-08-02 19:38:00 +0200326 error_report("Attempted to create TCE table with duplicate"
327 " LIOBN 0x%x", liobn);
David Gibson8b1853e2012-12-03 16:42:13 +0000328 return NULL;
329 }
330
Anthony Liguoria83000f2013-07-18 14:32:58 -0500331 tcet = SPAPR_TCE_TABLE(object_new(TYPE_SPAPR_TCE_TABLE));
David Gibsonad0ebb92012-06-27 14:50:44 +1000332 tcet->liobn = liobn;
David Gibsonad0ebb92012-06-27 14:50:44 +1000333
Greg Kurza205a052017-07-25 19:58:40 +0200334 tmp = g_strdup_printf("tce-table-%x", liobn);
Alexey Kardashevskiydea1b3c2015-05-07 15:33:37 +1000335 object_property_add_child(OBJECT(owner), tmp, OBJECT(tcet), NULL);
Greg Kurza205a052017-07-25 19:58:40 +0200336 g_free(tmp);
Michael Roth8dc97852017-07-25 20:00:09 +0200337 object_unref(OBJECT(tcet));
David Gibsonad0ebb92012-06-27 14:50:44 +1000338
Alexey Kardashevskiye4c35b72014-05-27 15:36:34 +1000339 object_property_set_bool(OBJECT(tcet), true, "realized", NULL);
David Gibsonad0ebb92012-06-27 14:50:44 +1000340
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200341 return tcet;
342}
343
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000344void spapr_tce_table_enable(sPAPRTCETable *tcet,
345 uint32_t page_shift, uint64_t bus_offset,
346 uint32_t nb_table)
347{
348 if (tcet->nb_table) {
Alistair Francis3dc6f862017-07-12 06:57:41 -0700349 warn_report("trying to enable already enabled TCE table");
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000350 return;
351 }
352
353 tcet->bus_offset = bus_offset;
354 tcet->page_shift = page_shift;
355 tcet->nb_table = nb_table;
356 tcet->table = spapr_tce_alloc_table(tcet->liobn,
357 tcet->page_shift,
Alexey Kardashevskiyd6ee2a72017-03-10 12:41:13 +1100358 tcet->bus_offset,
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000359 tcet->nb_table,
360 &tcet->fd,
361 tcet->need_vfio);
362
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +1000363 memory_region_set_size(MEMORY_REGION(&tcet->iommu),
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000364 (uint64_t)tcet->nb_table << tcet->page_shift);
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +1000365 memory_region_add_subregion(&tcet->root, tcet->bus_offset,
366 MEMORY_REGION(&tcet->iommu));
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000367}
368
Alexey Kardashevskiya26fdf32016-06-01 18:57:34 +1000369void spapr_tce_table_disable(sPAPRTCETable *tcet)
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000370{
371 if (!tcet->nb_table) {
372 return;
373 }
374
Alexey Kardashevskiy3df9d742017-07-11 13:56:19 +1000375 memory_region_del_subregion(&tcet->root, MEMORY_REGION(&tcet->iommu));
376 memory_region_set_size(MEMORY_REGION(&tcet->iommu), 0);
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000377
378 spapr_tce_free_table(tcet->table, tcet->fd, tcet->nb_table);
379 tcet->fd = -1;
380 tcet->table = NULL;
381 tcet->bus_offset = 0;
382 tcet->page_shift = 0;
383 tcet->nb_table = 0;
384}
385
David Gibson5f9490d2014-12-08 13:48:02 +1100386static void spapr_tce_table_unrealize(DeviceState *dev, Error **errp)
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200387{
David Gibson5f9490d2014-12-08 13:48:02 +1100388 sPAPRTCETable *tcet = SPAPR_TCE_TABLE(dev);
Anthony Liguoria83000f2013-07-18 14:32:58 -0500389
Greg Kurzea359d22017-07-25 20:00:22 +0200390 vmstate_unregister(DEVICE(tcet), &vmstate_spapr_tce_table, tcet);
391
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200392 QLIST_REMOVE(tcet, list);
393
Alexey Kardashevskiydf7625d2016-06-01 18:57:33 +1000394 spapr_tce_table_disable(tcet);
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200395}
396
Paolo Bonzinia84bb432013-04-11 12:35:33 +0200397MemoryRegion *spapr_tce_get_iommu(sPAPRTCETable *tcet)
398{
Alexey Kardashevskiyb4b6eb72016-06-01 18:57:35 +1000399 return &tcet->root;
Paolo Bonzinia84bb432013-04-11 12:35:33 +0200400}
401
Anthony Liguoria83000f2013-07-18 14:32:58 -0500402static void spapr_tce_reset(DeviceState *dev)
David Gibsoneddeed22012-09-12 16:57:14 +0000403{
Anthony Liguoria83000f2013-07-18 14:32:58 -0500404 sPAPRTCETable *tcet = SPAPR_TCE_TABLE(dev);
Alexey Kardashevskiy523e7b82014-05-27 15:36:35 +1000405 size_t table_size = tcet->nb_table * sizeof(uint64_t);
David Gibsoneddeed22012-09-12 16:57:14 +0000406
David Gibson57c0eb12016-08-08 10:06:25 +1000407 if (tcet->nb_table) {
408 memset(tcet->table, 0, table_size);
409 }
David Gibsoneddeed22012-09-12 16:57:14 +0000410}
411
David Gibsonedded452012-06-27 14:50:46 +1000412static target_ulong put_tce_emu(sPAPRTCETable *tcet, target_ulong ioba,
413 target_ulong tce)
David Gibsonad0ebb92012-06-27 14:50:44 +1000414{
Paolo Bonzinia84bb432013-04-11 12:35:33 +0200415 IOMMUTLBEntry entry;
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000416 hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
Alexey Kardashevskiy1b8ecee2014-05-27 15:36:37 +1000417 unsigned long index = (ioba - tcet->bus_offset) >> tcet->page_shift;
David Gibsonad0ebb92012-06-27 14:50:44 +1000418
Alexey Kardashevskiy1b8ecee2014-05-27 15:36:37 +1000419 if (index >= tcet->nb_table) {
David Gibsonb55519a2013-04-29 18:33:52 +0000420 hcall_dprintf("spapr_vio_put_tce on out-of-bounds IOBA 0x"
David Gibsonad0ebb92012-06-27 14:50:44 +1000421 TARGET_FMT_lx "\n", ioba);
422 return H_PARAMETER;
423 }
424
Alexey Kardashevskiy1b8ecee2014-05-27 15:36:37 +1000425 tcet->table[index] = tce;
David Gibsonad0ebb92012-06-27 14:50:44 +1000426
Paolo Bonzinia84bb432013-04-11 12:35:33 +0200427 entry.target_as = &address_space_memory,
Alexey Kardashevskiyd78c19b2016-05-26 09:43:23 -0600428 entry.iova = (ioba - tcet->bus_offset) & page_mask;
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000429 entry.translated_addr = tce & page_mask;
430 entry.addr_mask = ~page_mask;
Greg Kurz5709af32015-07-02 16:23:12 +1000431 entry.perm = spapr_tce_iommu_access_flags(tce);
Peter Maydellcb1efcf2018-06-15 14:57:16 +0100432 memory_region_notify_iommu(&tcet->iommu, 0, entry);
Paolo Bonzinia84bb432013-04-11 12:35:33 +0200433
David Gibsonad0ebb92012-06-27 14:50:44 +1000434 return H_SUCCESS;
435}
436
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000437static target_ulong h_put_tce_indirect(PowerPCCPU *cpu,
David Gibson28e02042015-07-02 16:23:04 +1000438 sPAPRMachineState *spapr,
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000439 target_ulong opcode, target_ulong *args)
440{
441 int i;
442 target_ulong liobn = args[0];
443 target_ulong ioba = args[1];
444 target_ulong ioba1 = ioba;
445 target_ulong tce_list = args[2];
446 target_ulong npages = args[3];
Alexey Kardashevskiyf1215ea2015-05-07 15:33:29 +1000447 target_ulong ret = H_PARAMETER, tce = 0;
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000448 sPAPRTCETable *tcet = spapr_tce_find_by_liobn(liobn);
449 CPUState *cs = CPU(cpu);
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000450 hwaddr page_mask, page_size;
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000451
452 if (!tcet) {
453 return H_PARAMETER;
454 }
455
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000456 if ((npages > 512) || (tce_list & SPAPR_TCE_PAGE_MASK)) {
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000457 return H_PARAMETER;
458 }
459
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000460 page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
461 page_size = IOMMU_PAGE_SIZE(tcet->page_shift);
462 ioba &= page_mask;
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000463
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000464 for (i = 0; i < npages; ++i, ioba += page_size) {
Greg Kurz4d9ab7d2015-07-02 16:23:11 +1000465 tce = ldq_be_phys(cs->as, tce_list + i * sizeof(target_ulong));
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000466
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000467 ret = put_tce_emu(tcet, ioba, tce);
468 if (ret) {
469 break;
470 }
471 }
472
473 /* Trace last successful or the first problematic entry */
474 i = i ? (i - 1) : 0;
Alexey Kardashevskiyd9d96a32015-05-07 15:33:33 +1000475 if (SPAPR_IS_PCI_LIOBN(liobn)) {
476 trace_spapr_iommu_pci_indirect(liobn, ioba1, tce_list, i, tce, ret);
477 } else {
478 trace_spapr_iommu_indirect(liobn, ioba1, tce_list, i, tce, ret);
479 }
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000480 return ret;
481}
482
David Gibson28e02042015-07-02 16:23:04 +1000483static target_ulong h_stuff_tce(PowerPCCPU *cpu, sPAPRMachineState *spapr,
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000484 target_ulong opcode, target_ulong *args)
485{
486 int i;
487 target_ulong liobn = args[0];
488 target_ulong ioba = args[1];
489 target_ulong tce_value = args[2];
490 target_ulong npages = args[3];
491 target_ulong ret = H_PARAMETER;
492 sPAPRTCETable *tcet = spapr_tce_find_by_liobn(liobn);
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000493 hwaddr page_mask, page_size;
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000494
495 if (!tcet) {
496 return H_PARAMETER;
497 }
498
499 if (npages > tcet->nb_table) {
500 return H_PARAMETER;
501 }
502
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000503 page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
504 page_size = IOMMU_PAGE_SIZE(tcet->page_shift);
505 ioba &= page_mask;
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000506
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000507 for (i = 0; i < npages; ++i, ioba += page_size) {
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000508 ret = put_tce_emu(tcet, ioba, tce_value);
509 if (ret) {
510 break;
511 }
512 }
Alexey Kardashevskiyd9d96a32015-05-07 15:33:33 +1000513 if (SPAPR_IS_PCI_LIOBN(liobn)) {
514 trace_spapr_iommu_pci_stuff(liobn, ioba, tce_value, npages, ret);
515 } else {
516 trace_spapr_iommu_stuff(liobn, ioba, tce_value, npages, ret);
517 }
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000518
519 return ret;
520}
521
David Gibson28e02042015-07-02 16:23:04 +1000522static target_ulong h_put_tce(PowerPCCPU *cpu, sPAPRMachineState *spapr,
David Gibsonedded452012-06-27 14:50:46 +1000523 target_ulong opcode, target_ulong *args)
524{
525 target_ulong liobn = args[0];
526 target_ulong ioba = args[1];
527 target_ulong tce = args[2];
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +1000528 target_ulong ret = H_PARAMETER;
David Gibsonedded452012-06-27 14:50:46 +1000529 sPAPRTCETable *tcet = spapr_tce_find_by_liobn(liobn);
530
David Gibsonedded452012-06-27 14:50:46 +1000531 if (tcet) {
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000532 hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
533
534 ioba &= page_mask;
535
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +1000536 ret = put_tce_emu(tcet, ioba, tce);
David Gibsonedded452012-06-27 14:50:46 +1000537 }
Alexey Kardashevskiyd9d96a32015-05-07 15:33:33 +1000538 if (SPAPR_IS_PCI_LIOBN(liobn)) {
539 trace_spapr_iommu_pci_put(liobn, ioba, tce, ret);
540 } else {
541 trace_spapr_iommu_put(liobn, ioba, tce, ret);
542 }
David Gibsonedded452012-06-27 14:50:46 +1000543
Alexey Kardashevskiy7e472262013-08-29 18:05:00 +1000544 return ret;
David Gibsonedded452012-06-27 14:50:46 +1000545}
546
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100547static target_ulong get_tce_emu(sPAPRTCETable *tcet, target_ulong ioba,
548 target_ulong *tce)
549{
Alexey Kardashevskiy1b8ecee2014-05-27 15:36:37 +1000550 unsigned long index = (ioba - tcet->bus_offset) >> tcet->page_shift;
551
552 if (index >= tcet->nb_table) {
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100553 hcall_dprintf("spapr_iommu_get_tce on out-of-bounds IOBA 0x"
554 TARGET_FMT_lx "\n", ioba);
555 return H_PARAMETER;
556 }
557
Alexey Kardashevskiy1b8ecee2014-05-27 15:36:37 +1000558 *tce = tcet->table[index];
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100559
560 return H_SUCCESS;
561}
562
David Gibson28e02042015-07-02 16:23:04 +1000563static target_ulong h_get_tce(PowerPCCPU *cpu, sPAPRMachineState *spapr,
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100564 target_ulong opcode, target_ulong *args)
565{
566 target_ulong liobn = args[0];
567 target_ulong ioba = args[1];
568 target_ulong tce = 0;
569 target_ulong ret = H_PARAMETER;
570 sPAPRTCETable *tcet = spapr_tce_find_by_liobn(liobn);
571
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100572 if (tcet) {
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000573 hwaddr page_mask = IOMMU_PAGE_MASK(tcet->page_shift);
574
575 ioba &= page_mask;
576
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100577 ret = get_tce_emu(tcet, ioba, &tce);
578 if (!ret) {
579 args[0] = tce;
580 }
581 }
Alexey Kardashevskiyd9d96a32015-05-07 15:33:33 +1000582 if (SPAPR_IS_PCI_LIOBN(liobn)) {
583 trace_spapr_iommu_pci_get(liobn, ioba, ret, tce);
584 } else {
585 trace_spapr_iommu_get(liobn, ioba, ret, tce);
586 }
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100587
588 return ret;
589}
590
David Gibsonad0ebb92012-06-27 14:50:44 +1000591int spapr_dma_dt(void *fdt, int node_off, const char *propname,
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000592 uint32_t liobn, uint64_t window, uint32_t size)
David Gibsonad0ebb92012-06-27 14:50:44 +1000593{
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000594 uint32_t dma_prop[5];
595 int ret;
David Gibsonad0ebb92012-06-27 14:50:44 +1000596
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000597 dma_prop[0] = cpu_to_be32(liobn);
598 dma_prop[1] = cpu_to_be32(window >> 32);
599 dma_prop[2] = cpu_to_be32(window & 0xFFFFFFFF);
600 dma_prop[3] = 0; /* window size is 32 bits */
601 dma_prop[4] = cpu_to_be32(size);
David Gibsonad0ebb92012-06-27 14:50:44 +1000602
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000603 ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-address-cells", 2);
604 if (ret < 0) {
605 return ret;
606 }
David Gibsonad0ebb92012-06-27 14:50:44 +1000607
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000608 ret = fdt_setprop_cell(fdt, node_off, "ibm,#dma-size-cells", 2);
609 if (ret < 0) {
610 return ret;
611 }
612
613 ret = fdt_setprop(fdt, node_off, propname, dma_prop, sizeof(dma_prop));
614 if (ret < 0) {
615 return ret;
David Gibsonad0ebb92012-06-27 14:50:44 +1000616 }
617
618 return 0;
619}
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000620
621int spapr_tcet_dma_dt(void *fdt, int node_off, const char *propname,
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200622 sPAPRTCETable *tcet)
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000623{
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200624 if (!tcet) {
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000625 return 0;
626 }
627
Paolo Bonzini2b7dc942013-04-10 17:30:48 +0200628 return spapr_dma_dt(fdt, node_off, propname,
Alexey Kardashevskiy650f33a2014-05-27 15:36:36 +1000629 tcet->liobn, 0, tcet->nb_table << tcet->page_shift);
Alexey Kardashevskiy5c4cbcf2012-08-07 16:10:38 +0000630}
Anthony Liguoria83000f2013-07-18 14:32:58 -0500631
632static void spapr_tce_table_class_init(ObjectClass *klass, void *data)
633{
634 DeviceClass *dc = DEVICE_CLASS(klass);
Greg Kurza931ad12017-07-25 19:59:06 +0200635 dc->realize = spapr_tce_table_realize;
Anthony Liguoria83000f2013-07-18 14:32:58 -0500636 dc->reset = spapr_tce_reset;
David Gibson5f9490d2014-12-08 13:48:02 +1100637 dc->unrealize = spapr_tce_table_unrealize;
Thomas Huth1f98e552017-08-17 16:19:16 +0200638 /* Reason: This is just an internal device for handling the hypercalls */
639 dc->user_creatable = false;
Anthony Liguoria83000f2013-07-18 14:32:58 -0500640
641 QLIST_INIT(&spapr_tce_tables);
642
643 /* hcall-tce */
644 spapr_register_hypercall(H_PUT_TCE, h_put_tce);
Laurent Dufoura0fcac92014-02-21 10:29:06 +0100645 spapr_register_hypercall(H_GET_TCE, h_get_tce);
Alexey Kardashevskiyda953242014-05-27 15:36:30 +1000646 spapr_register_hypercall(H_PUT_TCE_INDIRECT, h_put_tce_indirect);
647 spapr_register_hypercall(H_STUFF_TCE, h_stuff_tce);
Anthony Liguoria83000f2013-07-18 14:32:58 -0500648}
649
650static TypeInfo spapr_tce_table_info = {
651 .name = TYPE_SPAPR_TCE_TABLE,
652 .parent = TYPE_DEVICE,
653 .instance_size = sizeof(sPAPRTCETable),
654 .class_init = spapr_tce_table_class_init,
Anthony Liguoria83000f2013-07-18 14:32:58 -0500655};
656
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +1000657static void spapr_iommu_memory_region_class_init(ObjectClass *klass, void *data)
658{
659 IOMMUMemoryRegionClass *imrc = IOMMU_MEMORY_REGION_CLASS(klass);
660
661 imrc->translate = spapr_tce_translate_iommu;
662 imrc->get_min_page_size = spapr_tce_get_min_page_size;
663 imrc->notify_flag_changed = spapr_tce_notify_flag_changed;
Alexey Kardashevskiy9ded7802018-02-06 11:08:24 -0700664 imrc->get_attr = spapr_tce_get_attr;
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +1000665}
666
667static const TypeInfo spapr_iommu_memory_region_info = {
668 .parent = TYPE_IOMMU_MEMORY_REGION,
669 .name = TYPE_SPAPR_IOMMU_MEMORY_REGION,
670 .class_init = spapr_iommu_memory_region_class_init,
671};
672
Anthony Liguoria83000f2013-07-18 14:32:58 -0500673static void register_types(void)
674{
675 type_register_static(&spapr_tce_table_info);
Alexey Kardashevskiy1221a472017-07-11 13:56:20 +1000676 type_register_static(&spapr_iommu_memory_region_info);
Anthony Liguoria83000f2013-07-18 14:32:58 -0500677}
678
679type_init(register_types);