2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2016 Anish Gupta (anish@freebsd.org)
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 #ifndef _AMDVI_PRIV_H_
32 #define _AMDVI_PRIV_H_
34 #include <contrib/dev/acpica/include/acpi.h>
36 #define BIT(n) (1ULL << (n))
37 /* Return value of bits[n:m] where n and (n >= ) m are bit positions. */
38 #define REG_BITS(x, n, m) (((x) >> (m)) & \
39 ((1 << (((n) - (m)) + 1)) - 1))
42 * IOMMU PCI capability.
44 #define AMDVI_PCI_CAP_IOTLB BIT(0) /* IOTLB is supported. */
45 #define AMDVI_PCI_CAP_HT BIT(1) /* HyperTransport tunnel support. */
46 #define AMDVI_PCI_CAP_NPCACHE BIT(2) /* Not present page cached. */
47 #define AMDVI_PCI_CAP_EFR BIT(3) /* Extended features. */
48 #define AMDVI_PCI_CAP_EXT BIT(4) /* Miscellaneous information reg. */
51 * IOMMU extended features.
53 #define AMDVI_EX_FEA_PREFSUP BIT(0) /* Prefetch command support. */
54 #define AMDVI_EX_FEA_PPRSUP BIT(1) /* PPR support */
55 #define AMDVI_EX_FEA_XTSUP BIT(2) /* Reserved */
56 #define AMDVI_EX_FEA_NXSUP BIT(3) /* No-execute. */
57 #define AMDVI_EX_FEA_GTSUP BIT(4) /* Guest translation support. */
58 #define AMDVI_EX_FEA_EFRW BIT(5) /* Reserved */
59 #define AMDVI_EX_FEA_IASUP BIT(6) /* Invalidate all command supp. */
60 #define AMDVI_EX_FEA_GASUP BIT(7) /* Guest APIC or AVIC support. */
61 #define AMDVI_EX_FEA_HESUP BIT(8) /* Hardware Error. */
62 #define AMDVI_EX_FEA_PCSUP BIT(9) /* Performance counters support. */
63 /* XXX: add more EFER bits. */
66 * Device table entry or DTE
67 * NOTE: Must be 256-bits/32 bytes aligned.
70 uint32_t dt_valid:1; /* Device Table valid. */
71 uint32_t pt_valid:1; /* Page translation valid. */
72 uint16_t :7; /* Reserved[8:2] */
73 uint8_t pt_level:3; /* Paging level, 0 to disable. */
74 uint64_t pt_base:40; /* Page table root pointer. */
75 uint8_t :3; /* Reserved[54:52] */
76 uint8_t gv_valid:1; /* Revision 2, GVA to SPA. */
77 uint8_t gv_level:2; /* Revision 2, GLX level. */
78 uint8_t gv_cr3_lsb:3; /* Revision 2, GCR3[14:12] */
79 uint8_t read_allow:1; /* I/O read enabled. */
80 uint8_t write_allow:1; /* I/O write enabled. */
81 uint8_t :1; /* Reserved[63] */
82 uint16_t domain_id:16; /* Domain ID */
83 uint16_t gv_cr3_lsb2:16; /* Revision 2, GCR3[30:15] */
84 uint8_t iotlb_enable:1; /* Device support IOTLB */
85 uint8_t sup_second_io_fault:1; /* Suppress subsequent I/O faults. */
86 uint8_t sup_all_io_fault:1; /* Suppress all I/O page faults. */
87 uint8_t IOctl:2; /* Port I/O control. */
88 uint8_t iotlb_cache_disable:1; /* IOTLB cache hints. */
89 uint8_t snoop_disable:1; /* Snoop disable. */
90 uint8_t allow_ex:1; /* Allow exclusion. */
91 uint8_t sysmgmt:2; /* System management message.*/
92 uint8_t :1; /* Reserved[106] */
93 uint32_t gv_cr3_msb:21; /* Revision 2, GCR3[51:31] */
94 uint8_t intmap_valid:1; /* Interrupt map valid. */
95 uint8_t intmap_len:4; /* Interrupt map table length. */
96 uint8_t intmap_ign:1; /* Ignore unmapped interrupts. */
97 uint64_t intmap_base:46; /* IntMap base. */
98 uint8_t :4; /* Reserved[183:180] */
99 uint8_t init_pass:1; /* INIT pass through or PT */
100 uint8_t extintr_pass:1; /* External Interrupt PT */
101 uint8_t nmi_pass:1; /* NMI PT */
102 uint8_t :1; /* Reserved[187] */
103 uint8_t intr_ctrl:2; /* Interrupt control */
104 uint8_t lint0_pass:1; /* LINT0 PT */
105 uint8_t lint1_pass:1; /* LINT1 PT */
106 uint64_t :64; /* Reserved[255:192] */
107 } __attribute__((__packed__));
108 CTASSERT(sizeof(struct amdvi_dte) == 32);
111 * IOMMU command entry.
118 } __attribute__((__packed__));
120 /* Command opcodes. */
121 #define AMDVI_CMP_WAIT_OPCODE 0x1 /* Completion wait. */
122 #define AMDVI_INVD_DTE_OPCODE 0x2 /* Invalidate device table entry. */
123 #define AMDVI_INVD_PAGE_OPCODE 0x3 /* Invalidate pages. */
124 #define AMDVI_INVD_IOTLB_OPCODE 0x4 /* Invalidate IOTLB pages. */
125 #define AMDVI_INVD_INTR_OPCODE 0x5 /* Invalidate Interrupt table. */
126 #define AMDVI_PREFETCH_PAGES_OPCODE 0x6 /* Prefetch IOMMU pages. */
127 #define AMDVI_COMP_PPR_OPCODE 0x7 /* Complete PPR request. */
128 #define AMDVI_INV_ALL_OPCODE 0x8 /* Invalidate all. */
130 /* Completion wait attributes. */
131 #define AMDVI_CMP_WAIT_STORE BIT(0) /* Write back data. */
132 #define AMDVI_CMP_WAIT_INTR BIT(1) /* Completion wait interrupt. */
133 #define AMDVI_CMP_WAIT_FLUSH BIT(2) /* Flush queue. */
135 /* Invalidate page. */
136 #define AMDVI_INVD_PAGE_S BIT(0) /* Invalidation size. */
137 #define AMDVI_INVD_PAGE_PDE BIT(1) /* Invalidate PDE. */
138 #define AMDVI_INVD_PAGE_GN_GVA BIT(2) /* GPA or GVA. */
140 #define AMDVI_INVD_PAGE_ALL_ADDR (0x7FFFFFFFFFFFFULL << 12)
142 /* Invalidate IOTLB. */
143 #define AMDVI_INVD_IOTLB_S BIT(0) /* Invalidation size 4k or addr */
144 #define AMDVI_INVD_IOTLB_GN_GVA BIT(2) /* GPA or GVA. */
146 #define AMDVI_INVD_IOTLB_ALL_ADDR (0x7FFFFFFFFFFFFULL << 12)
147 /* XXX: add more command entries. */
155 uint16_t pasid_domid; /* PASID low or DomainID */
159 } __attribute__((__packed__));
160 CTASSERT(sizeof(struct amdvi_event) == 16);
162 /* Various event types. */
163 #define AMDVI_EVENT_INVALID_DTE 0x1
164 #define AMDVI_EVENT_PFAULT 0x2
165 #define AMDVI_EVENT_DTE_HW_ERROR 0x3
166 #define AMDVI_EVENT_PAGE_HW_ERROR 0x4
167 #define AMDVI_EVENT_ILLEGAL_CMD 0x5
168 #define AMDVI_EVENT_CMD_HW_ERROR 0x6
169 #define AMDVI_EVENT_IOTLB_TIMEOUT 0x7
170 #define AMDVI_EVENT_INVALID_DTE_REQ 0x8
171 #define AMDVI_EVENT_INVALID_PPR_REQ 0x9
172 #define AMDVI_EVENT_COUNTER_ZERO 0xA
174 #define AMDVI_EVENT_FLAG_MASK 0x1FF /* Mask for event flags. */
175 #define AMDVI_EVENT_FLAG_TYPE(x) (((x) >> 9) & 0x3)
178 * IOMMU control block.
184 uint64_t base:40; /* Devtable register base. */
201 uint16_t control :13;
224 uint64_t first_event;
225 uint64_t second_event;
226 uint64_t event_status;
227 /* Revision 2 only, end. */
228 uint8_t pad1[0x1FA8]; /* Padding. */
229 uint32_t cmd_head:19;
231 uint32_t cmd_tail:19;
233 uint32_t evt_head:19;
235 uint32_t evt_tail:19;
241 uint16_t ppr_head:15;
244 uint16_t ppr_tail:15;
246 uint8_t pad3[0x1FC0]; /* Padding. */
248 /* XXX: More for rev2. */
249 } __attribute__((__packed__));
250 CTASSERT(offsetof(struct amdvi_ctrl, pad1)== 0x58);
251 CTASSERT(offsetof(struct amdvi_ctrl, pad2)== 0x2028);
252 CTASSERT(offsetof(struct amdvi_ctrl, pad3)== 0x2040);
254 #define AMDVI_MMIO_V1_SIZE (4 * PAGE_SIZE) /* v1 size */
256 * AMF IOMMU v2 size including event counters
258 #define AMDVI_MMIO_V2_SIZE (8 * PAGE_SIZE)
260 CTASSERT(sizeof(struct amdvi_ctrl) == 0x4000);
261 CTASSERT(sizeof(struct amdvi_ctrl) == AMDVI_MMIO_V1_SIZE);
264 #define IVHD_FLAG_HTT BIT(0) /* Hypertransport Tunnel. */
265 #define IVHD_FLAG_PPW BIT(1) /* Pass posted write. */
266 #define IVHD_FLAG_RPPW BIT(2) /* Response pass posted write. */
267 #define IVHD_FLAG_ISOC BIT(3) /* Isoc support. */
268 #define IVHD_FLAG_IOTLB BIT(4) /* IOTLB support. */
269 #define IVHD_FLAG_COH BIT(5) /* Coherent control, default 1 */
270 #define IVHD_FLAG_PFS BIT(6) /* Prefetch IOMMU pages. */
271 #define IVHD_FLAG_PPRS BIT(7) /* Peripheral page support. */
273 /* IVHD device entry data setting. */
274 #define IVHD_DEV_LINT0_PASS BIT(6) /* LINT0 interrupts. */
275 #define IVHD_DEV_LINT1_PASS BIT(7) /* LINT1 interrupts. */
277 /* Bit[5:4] for System Mgmt. Bit3 is reserved. */
278 #define IVHD_DEV_INIT_PASS BIT(0) /* INIT */
279 #define IVHD_DEV_EXTINTR_PASS BIT(1) /* ExtInt */
280 #define IVHD_DEV_NMI_PASS BIT(2) /* NMI */
282 /* IVHD 8-byte extended data settings. */
283 #define IVHD_DEV_EXT_ATS_DISABLE BIT(31) /* Disable ATS */
285 /* IOMMU control register. */
286 #define AMDVI_CTRL_EN BIT(0) /* IOMMU enable. */
287 #define AMDVI_CTRL_HTT BIT(1) /* Hypertransport tunnel enable. */
288 #define AMDVI_CTRL_ELOG BIT(2) /* Event log enable. */
289 #define AMDVI_CTRL_ELOGINT BIT(3) /* Event log interrupt. */
290 #define AMDVI_CTRL_COMINT BIT(4) /* Completion wait interrupt. */
291 #define AMDVI_CTRL_PPW BIT(8)
292 #define AMDVI_CTRL_RPPW BIT(9)
293 #define AMDVI_CTRL_COH BIT(10)
294 #define AMDVI_CTRL_ISOC BIT(11)
295 #define AMDVI_CTRL_CMD BIT(12) /* Command buffer enable. */
296 #define AMDVI_CTRL_PPRLOG BIT(13)
297 #define AMDVI_CTRL_PPRINT BIT(14)
298 #define AMDVI_CTRL_PPREN BIT(15)
299 #define AMDVI_CTRL_GTE BIT(16) /* Guest translation enable. */
300 #define AMDVI_CTRL_GAE BIT(17) /* Guest APIC enable. */
302 /* Invalidation timeout. */
303 #define AMDVI_CTRL_INV_NO_TO 0 /* No timeout. */
304 #define AMDVI_CTRL_INV_TO_1ms 1 /* 1 ms */
305 #define AMDVI_CTRL_INV_TO_10ms 2 /* 10 ms */
306 #define AMDVI_CTRL_INV_TO_100ms 3 /* 100 ms */
307 #define AMDVI_CTRL_INV_TO_1S 4 /* 1 second */
308 #define AMDVI_CTRL_INV_TO_10S 5 /* 10 second */
309 #define AMDVI_CTRL_INV_TO_100S 6 /* 100 second */
312 * Max number of PCI devices.
313 * 256 bus x 32 slot/devices x 8 functions.
315 #define PCI_NUM_DEV_MAX 0x10000
317 /* Maximum number of domains supported by IOMMU. */
318 #define AMDVI_MAX_DOMAIN (BIT(16) - 1)
321 * IOMMU Page Table attributes.
323 #define AMDVI_PT_PRESENT BIT(0)
324 #define AMDVI_PT_COHERENT BIT(60)
325 #define AMDVI_PT_READ BIT(61)
326 #define AMDVI_PT_WRITE BIT(62)
328 #define AMDVI_PT_RW (AMDVI_PT_READ | AMDVI_PT_WRITE)
329 #define AMDVI_PT_MASK 0xFFFFFFFFFF000UL /* Only [51:12] for PA */
331 #define AMDVI_PD_LEVEL_SHIFT 9
332 #define AMDVI_PD_SUPER(x) (((x) >> AMDVI_PD_LEVEL_SHIFT) == 7)
334 * IOMMU Status, offset 0x2020
336 #define AMDVI_STATUS_EV_OF BIT(0) /* Event overflow. */
337 #define AMDVI_STATUS_EV_INTR BIT(1) /* Event interrupt. */
338 /* Completion wait command completed. */
339 #define AMDVI_STATUS_CMP BIT(2)
341 #define IVRS_CTRL_RID 1 /* MMIO RID */
344 struct ivhd_dev_cfg {
347 uint8_t data; /* Device configuration. */
348 bool enable_ats; /* ATS enabled for the device. */
349 int ats_qlen; /* ATS invalidation queue depth. */
352 struct amdvi_domain {
353 uint64_t *ptp; /* Highest level page table */
354 int ptp_level; /* Level of page tables */
355 u_int id; /* Domain id */
356 SLIST_ENTRY (amdvi_domain) next;
360 * Different type of IVHD.
361 * XXX: Use AcpiIvrsType once new IVHD types are available.
365 IVRS_TYPE_HARDWARE_LEGACY = ACPI_IVRS_TYPE_HARDWARE1,
366 /* Legacy without EFRi support. */
367 IVRS_TYPE_HARDWARE_EFR = ACPI_IVRS_TYPE_HARDWARE2,
368 /* With EFR support. */
369 IVRS_TYPE_HARDWARE_MIXED = 0x40, /* Mixed with EFR support. */
376 struct amdvi_ctrl *ctrl; /* Control area. */
377 device_t dev; /* IOMMU device. */
378 enum IvrsType ivhd_type; /* IOMMU IVHD type. */
379 bool iotlb; /* IOTLB supported by IOMMU */
380 struct amdvi_cmd *cmd; /* Command descriptor area. */
381 int cmd_max; /* Max number of commands. */
382 uint64_t cmp_data; /* Command completion write back. */
383 struct amdvi_event *event; /* Event descriptor area. */
384 struct resource *event_res; /* Event interrupt resource. */
385 void *event_tag; /* Event interrupt tag. */
386 int event_max; /* Max number of events. */
389 /* ACPI various flags. */
390 uint32_t ivhd_flag; /* ACPI IVHD flag. */
391 uint32_t ivhd_feature; /* ACPI v1 Reserved or v2 attribute. */
392 uint64_t ext_feature; /* IVHD EFR */
394 uint16_t cap_off; /* PCI Capability offset. */
395 uint8_t pci_cap; /* PCI capability. */
396 uint16_t pci_seg; /* IOMMU PCI domain/segment. */
397 uint16_t pci_rid; /* PCI BDF of IOMMU */
398 /* Device range under this IOMMU. */
399 uint16_t start_dev_rid; /* First device under this IOMMU. */
400 uint16_t end_dev_rid; /* Last device under this IOMMU. */
402 /* BIOS provided device configuration for end points. */
403 struct ivhd_dev_cfg dev_cfg[10];
406 /* Software statistics. */
407 uint64_t event_intr_cnt; /* Total event INTR count. */
408 uint64_t total_cmd; /* Total number of commands. */
411 int amdvi_setup_hw(struct amdvi_softc *softc);
412 int amdvi_teardown_hw(struct amdvi_softc *softc);
413 #endif /* _AMDVI_PRIV_H_ */