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021f6537 MZ |
1 | /* |
2 | * Copyright (C) 2013, 2014 ARM Limited, All Rights Reserved. | |
3 | * Author: Marc Zyngier <marc.zyngier@arm.com> | |
4 | * | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
17 | */ | |
18 | #ifndef __LINUX_IRQCHIP_ARM_GIC_V3_H | |
19 | #define __LINUX_IRQCHIP_ARM_GIC_V3_H | |
20 | ||
21 | /* | |
22 | * Distributor registers. We assume we're running non-secure, with ARE | |
23 | * being set. Secure-only and non-ARE registers are not described. | |
24 | */ | |
25 | #define GICD_CTLR 0x0000 | |
26 | #define GICD_TYPER 0x0004 | |
27 | #define GICD_IIDR 0x0008 | |
28 | #define GICD_STATUSR 0x0010 | |
29 | #define GICD_SETSPI_NSR 0x0040 | |
30 | #define GICD_CLRSPI_NSR 0x0048 | |
31 | #define GICD_SETSPI_SR 0x0050 | |
32 | #define GICD_CLRSPI_SR 0x0058 | |
33 | #define GICD_SEIR 0x0068 | |
a0675c25 | 34 | #define GICD_IGROUPR 0x0080 |
021f6537 MZ |
35 | #define GICD_ISENABLER 0x0100 |
36 | #define GICD_ICENABLER 0x0180 | |
37 | #define GICD_ISPENDR 0x0200 | |
38 | #define GICD_ICPENDR 0x0280 | |
39 | #define GICD_ISACTIVER 0x0300 | |
40 | #define GICD_ICACTIVER 0x0380 | |
41 | #define GICD_IPRIORITYR 0x0400 | |
42 | #define GICD_ICFGR 0x0C00 | |
a0675c25 AP |
43 | #define GICD_IGRPMODR 0x0D00 |
44 | #define GICD_NSACR 0x0E00 | |
021f6537 | 45 | #define GICD_IROUTER 0x6000 |
a0675c25 | 46 | #define GICD_IDREGS 0xFFD0 |
021f6537 MZ |
47 | #define GICD_PIDR2 0xFFE8 |
48 | ||
a0675c25 AP |
49 | /* |
50 | * Those registers are actually from GICv2, but the spec demands that they | |
51 | * are implemented as RES0 if ARE is 1 (which we do in KVM's emulated GICv3). | |
52 | */ | |
53 | #define GICD_ITARGETSR 0x0800 | |
54 | #define GICD_SGIR 0x0F00 | |
55 | #define GICD_CPENDSGIR 0x0F10 | |
56 | #define GICD_SPENDSGIR 0x0F20 | |
57 | ||
021f6537 | 58 | #define GICD_CTLR_RWP (1U << 31) |
a0675c25 | 59 | #define GICD_CTLR_DS (1U << 6) |
021f6537 MZ |
60 | #define GICD_CTLR_ARE_NS (1U << 4) |
61 | #define GICD_CTLR_ENABLE_G1A (1U << 1) | |
62 | #define GICD_CTLR_ENABLE_G1 (1U << 0) | |
63 | ||
a0675c25 AP |
64 | /* |
65 | * In systems with a single security state (what we emulate in KVM) | |
66 | * the meaning of the interrupt group enable bits is slightly different | |
67 | */ | |
68 | #define GICD_CTLR_ENABLE_SS_G1 (1U << 1) | |
69 | #define GICD_CTLR_ENABLE_SS_G0 (1U << 0) | |
70 | ||
71 | #define GICD_TYPER_LPIS (1U << 17) | |
72 | #define GICD_TYPER_MBIS (1U << 16) | |
73 | ||
f5c1434c MZ |
74 | #define GICD_TYPER_ID_BITS(typer) ((((typer) >> 19) & 0x1f) + 1) |
75 | #define GICD_TYPER_IRQS(typer) ((((typer) & 0x1f) + 1) * 32) | |
76 | #define GICD_TYPER_LPIS (1U << 17) | |
77 | ||
021f6537 MZ |
78 | #define GICD_IROUTER_SPI_MODE_ONE (0U << 31) |
79 | #define GICD_IROUTER_SPI_MODE_ANY (1U << 31) | |
80 | ||
81 | #define GIC_PIDR2_ARCH_MASK 0xf0 | |
82 | #define GIC_PIDR2_ARCH_GICv3 0x30 | |
83 | #define GIC_PIDR2_ARCH_GICv4 0x40 | |
84 | ||
a0675c25 AP |
85 | #define GIC_V3_DIST_SIZE 0x10000 |
86 | ||
021f6537 MZ |
87 | /* |
88 | * Re-Distributor registers, offsets from RD_base | |
89 | */ | |
90 | #define GICR_CTLR GICD_CTLR | |
91 | #define GICR_IIDR 0x0004 | |
92 | #define GICR_TYPER 0x0008 | |
93 | #define GICR_STATUSR GICD_STATUSR | |
94 | #define GICR_WAKER 0x0014 | |
95 | #define GICR_SETLPIR 0x0040 | |
96 | #define GICR_CLRLPIR 0x0048 | |
97 | #define GICR_SEIR GICD_SEIR | |
98 | #define GICR_PROPBASER 0x0070 | |
99 | #define GICR_PENDBASER 0x0078 | |
100 | #define GICR_INVLPIR 0x00A0 | |
101 | #define GICR_INVALLR 0x00B0 | |
102 | #define GICR_SYNCR 0x00C0 | |
103 | #define GICR_MOVLPIR 0x0100 | |
104 | #define GICR_MOVALLR 0x0110 | |
0b6a3da9 MZ |
105 | #define GICR_ISACTIVER GICD_ISACTIVER |
106 | #define GICR_ICACTIVER GICD_ICACTIVER | |
a0675c25 | 107 | #define GICR_IDREGS GICD_IDREGS |
021f6537 MZ |
108 | #define GICR_PIDR2 GICD_PIDR2 |
109 | ||
cc2d3216 MZ |
110 | #define GICR_CTLR_ENABLE_LPIS (1UL << 0) |
111 | ||
112 | #define GICR_TYPER_CPU_NUMBER(r) (((r) >> 8) & 0xffff) | |
113 | ||
021f6537 MZ |
114 | #define GICR_WAKER_ProcessorSleep (1U << 1) |
115 | #define GICR_WAKER_ChildrenAsleep (1U << 2) | |
116 | ||
cc2d3216 MZ |
117 | #define GICR_PROPBASER_NonShareable (0U << 10) |
118 | #define GICR_PROPBASER_InnerShareable (1U << 10) | |
119 | #define GICR_PROPBASER_OuterShareable (2U << 10) | |
120 | #define GICR_PROPBASER_SHAREABILITY_MASK (3UL << 10) | |
121 | #define GICR_PROPBASER_nCnB (0U << 7) | |
122 | #define GICR_PROPBASER_nC (1U << 7) | |
123 | #define GICR_PROPBASER_RaWt (2U << 7) | |
124 | #define GICR_PROPBASER_RaWb (3U << 7) | |
125 | #define GICR_PROPBASER_WaWt (4U << 7) | |
126 | #define GICR_PROPBASER_WaWb (5U << 7) | |
127 | #define GICR_PROPBASER_RaWaWt (6U << 7) | |
128 | #define GICR_PROPBASER_RaWaWb (7U << 7) | |
241a386c | 129 | #define GICR_PROPBASER_CACHEABILITY_MASK (7U << 7) |
cc2d3216 MZ |
130 | #define GICR_PROPBASER_IDBITS_MASK (0x1f) |
131 | ||
4ad3e363 MZ |
132 | #define GICR_PENDBASER_NonShareable (0U << 10) |
133 | #define GICR_PENDBASER_InnerShareable (1U << 10) | |
134 | #define GICR_PENDBASER_OuterShareable (2U << 10) | |
135 | #define GICR_PENDBASER_SHAREABILITY_MASK (3UL << 10) | |
136 | #define GICR_PENDBASER_nCnB (0U << 7) | |
137 | #define GICR_PENDBASER_nC (1U << 7) | |
138 | #define GICR_PENDBASER_RaWt (2U << 7) | |
139 | #define GICR_PENDBASER_RaWb (3U << 7) | |
140 | #define GICR_PENDBASER_WaWt (4U << 7) | |
141 | #define GICR_PENDBASER_WaWb (5U << 7) | |
142 | #define GICR_PENDBASER_RaWaWt (6U << 7) | |
143 | #define GICR_PENDBASER_RaWaWb (7U << 7) | |
241a386c | 144 | #define GICR_PENDBASER_CACHEABILITY_MASK (7U << 7) |
4ad3e363 | 145 | |
021f6537 MZ |
146 | /* |
147 | * Re-Distributor registers, offsets from SGI_base | |
148 | */ | |
a0675c25 | 149 | #define GICR_IGROUPR0 GICD_IGROUPR |
021f6537 MZ |
150 | #define GICR_ISENABLER0 GICD_ISENABLER |
151 | #define GICR_ICENABLER0 GICD_ICENABLER | |
152 | #define GICR_ISPENDR0 GICD_ISPENDR | |
153 | #define GICR_ICPENDR0 GICD_ICPENDR | |
154 | #define GICR_ISACTIVER0 GICD_ISACTIVER | |
155 | #define GICR_ICACTIVER0 GICD_ICACTIVER | |
156 | #define GICR_IPRIORITYR0 GICD_IPRIORITYR | |
157 | #define GICR_ICFGR0 GICD_ICFGR | |
a0675c25 AP |
158 | #define GICR_IGRPMODR0 GICD_IGRPMODR |
159 | #define GICR_NSACR GICD_NSACR | |
021f6537 | 160 | |
cc2d3216 | 161 | #define GICR_TYPER_PLPIS (1U << 0) |
021f6537 MZ |
162 | #define GICR_TYPER_VLPIS (1U << 1) |
163 | #define GICR_TYPER_LAST (1U << 4) | |
164 | ||
a0675c25 AP |
165 | #define GIC_V3_REDIST_SIZE 0x20000 |
166 | ||
cc2d3216 MZ |
167 | #define LPI_PROP_GROUP1 (1 << 1) |
168 | #define LPI_PROP_ENABLED (1 << 0) | |
169 | ||
170 | /* | |
171 | * ITS registers, offsets from ITS_base | |
172 | */ | |
173 | #define GITS_CTLR 0x0000 | |
174 | #define GITS_IIDR 0x0004 | |
175 | #define GITS_TYPER 0x0008 | |
176 | #define GITS_CBASER 0x0080 | |
177 | #define GITS_CWRITER 0x0088 | |
178 | #define GITS_CREADR 0x0090 | |
179 | #define GITS_BASER 0x0100 | |
180 | #define GITS_PIDR2 GICR_PIDR2 | |
181 | ||
182 | #define GITS_TRANSLATER 0x10040 | |
183 | ||
7cb99116 YW |
184 | #define GITS_CTLR_ENABLE (1U << 0) |
185 | #define GITS_CTLR_QUIESCENT (1U << 31) | |
186 | ||
f54b97ed MZ |
187 | #define GITS_TYPER_DEVBITS_SHIFT 13 |
188 | #define GITS_TYPER_DEVBITS(r) ((((r) >> GITS_TYPER_DEVBITS_SHIFT) & 0x1f) + 1) | |
cc2d3216 MZ |
189 | #define GITS_TYPER_PTA (1UL << 19) |
190 | ||
191 | #define GITS_CBASER_VALID (1UL << 63) | |
192 | #define GITS_CBASER_nCnB (0UL << 59) | |
193 | #define GITS_CBASER_nC (1UL << 59) | |
194 | #define GITS_CBASER_RaWt (2UL << 59) | |
195 | #define GITS_CBASER_RaWb (3UL << 59) | |
196 | #define GITS_CBASER_WaWt (4UL << 59) | |
197 | #define GITS_CBASER_WaWb (5UL << 59) | |
198 | #define GITS_CBASER_RaWaWt (6UL << 59) | |
199 | #define GITS_CBASER_RaWaWb (7UL << 59) | |
241a386c | 200 | #define GITS_CBASER_CACHEABILITY_MASK (7UL << 59) |
cc2d3216 MZ |
201 | #define GITS_CBASER_NonShareable (0UL << 10) |
202 | #define GITS_CBASER_InnerShareable (1UL << 10) | |
203 | #define GITS_CBASER_OuterShareable (2UL << 10) | |
204 | #define GITS_CBASER_SHAREABILITY_MASK (3UL << 10) | |
205 | ||
206 | #define GITS_BASER_NR_REGS 8 | |
207 | ||
208 | #define GITS_BASER_VALID (1UL << 63) | |
209 | #define GITS_BASER_nCnB (0UL << 59) | |
210 | #define GITS_BASER_nC (1UL << 59) | |
211 | #define GITS_BASER_RaWt (2UL << 59) | |
212 | #define GITS_BASER_RaWb (3UL << 59) | |
213 | #define GITS_BASER_WaWt (4UL << 59) | |
214 | #define GITS_BASER_WaWb (5UL << 59) | |
215 | #define GITS_BASER_RaWaWt (6UL << 59) | |
216 | #define GITS_BASER_RaWaWb (7UL << 59) | |
241a386c | 217 | #define GITS_BASER_CACHEABILITY_MASK (7UL << 59) |
cc2d3216 MZ |
218 | #define GITS_BASER_TYPE_SHIFT (56) |
219 | #define GITS_BASER_TYPE(r) (((r) >> GITS_BASER_TYPE_SHIFT) & 7) | |
220 | #define GITS_BASER_ENTRY_SIZE_SHIFT (48) | |
221 | #define GITS_BASER_ENTRY_SIZE(r) ((((r) >> GITS_BASER_ENTRY_SIZE_SHIFT) & 0xff) + 1) | |
222 | #define GITS_BASER_NonShareable (0UL << 10) | |
223 | #define GITS_BASER_InnerShareable (1UL << 10) | |
224 | #define GITS_BASER_OuterShareable (2UL << 10) | |
225 | #define GITS_BASER_SHAREABILITY_SHIFT (10) | |
226 | #define GITS_BASER_SHAREABILITY_MASK (3UL << GITS_BASER_SHAREABILITY_SHIFT) | |
227 | #define GITS_BASER_PAGE_SIZE_SHIFT (8) | |
228 | #define GITS_BASER_PAGE_SIZE_4K (0UL << GITS_BASER_PAGE_SIZE_SHIFT) | |
229 | #define GITS_BASER_PAGE_SIZE_16K (1UL << GITS_BASER_PAGE_SIZE_SHIFT) | |
230 | #define GITS_BASER_PAGE_SIZE_64K (2UL << GITS_BASER_PAGE_SIZE_SHIFT) | |
231 | #define GITS_BASER_PAGE_SIZE_MASK (3UL << GITS_BASER_PAGE_SIZE_SHIFT) | |
30f21363 | 232 | #define GITS_BASER_PAGES_MAX 256 |
cc2d3216 MZ |
233 | |
234 | #define GITS_BASER_TYPE_NONE 0 | |
235 | #define GITS_BASER_TYPE_DEVICE 1 | |
236 | #define GITS_BASER_TYPE_VCPU 2 | |
237 | #define GITS_BASER_TYPE_CPU 3 | |
238 | #define GITS_BASER_TYPE_COLLECTION 4 | |
239 | #define GITS_BASER_TYPE_RESERVED5 5 | |
240 | #define GITS_BASER_TYPE_RESERVED6 6 | |
241 | #define GITS_BASER_TYPE_RESERVED7 7 | |
242 | ||
243 | /* | |
244 | * ITS commands | |
245 | */ | |
246 | #define GITS_CMD_MAPD 0x08 | |
247 | #define GITS_CMD_MAPC 0x09 | |
248 | #define GITS_CMD_MAPVI 0x0a | |
249 | #define GITS_CMD_MOVI 0x01 | |
250 | #define GITS_CMD_DISCARD 0x0f | |
251 | #define GITS_CMD_INV 0x0c | |
252 | #define GITS_CMD_MOVALL 0x0e | |
253 | #define GITS_CMD_INVALL 0x0d | |
254 | #define GITS_CMD_INT 0x03 | |
255 | #define GITS_CMD_CLEAR 0x04 | |
256 | #define GITS_CMD_SYNC 0x05 | |
257 | ||
021f6537 MZ |
258 | /* |
259 | * CPU interface registers | |
260 | */ | |
261 | #define ICC_CTLR_EL1_EOImode_drop_dir (0U << 1) | |
262 | #define ICC_CTLR_EL1_EOImode_drop (1U << 1) | |
263 | #define ICC_SRE_EL1_SRE (1U << 0) | |
264 | ||
265 | /* | |
266 | * Hypervisor interface registers (SRE only) | |
267 | */ | |
f6c86a41 JPB |
268 | #define ICH_LR_VIRTUAL_ID_MASK ((1ULL << 32) - 1) |
269 | ||
270 | #define ICH_LR_EOI (1ULL << 41) | |
271 | #define ICH_LR_GROUP (1ULL << 60) | |
272 | #define ICH_LR_HW (1ULL << 61) | |
273 | #define ICH_LR_STATE (3ULL << 62) | |
274 | #define ICH_LR_PENDING_BIT (1ULL << 62) | |
275 | #define ICH_LR_ACTIVE_BIT (1ULL << 63) | |
fb182cf8 | 276 | #define ICH_LR_PHYS_ID_SHIFT 32 |
f6c86a41 | 277 | #define ICH_LR_PHYS_ID_MASK (0x3ffULL << ICH_LR_PHYS_ID_SHIFT) |
021f6537 MZ |
278 | |
279 | #define ICH_MISR_EOI (1 << 0) | |
280 | #define ICH_MISR_U (1 << 1) | |
281 | ||
282 | #define ICH_HCR_EN (1 << 0) | |
283 | #define ICH_HCR_UIE (1 << 1) | |
284 | ||
285 | #define ICH_VMCR_CTLR_SHIFT 0 | |
286 | #define ICH_VMCR_CTLR_MASK (0x21f << ICH_VMCR_CTLR_SHIFT) | |
287 | #define ICH_VMCR_BPR1_SHIFT 18 | |
288 | #define ICH_VMCR_BPR1_MASK (7 << ICH_VMCR_BPR1_SHIFT) | |
289 | #define ICH_VMCR_BPR0_SHIFT 21 | |
290 | #define ICH_VMCR_BPR0_MASK (7 << ICH_VMCR_BPR0_SHIFT) | |
291 | #define ICH_VMCR_PMR_SHIFT 24 | |
292 | #define ICH_VMCR_PMR_MASK (0xffUL << ICH_VMCR_PMR_SHIFT) | |
293 | ||
021f6537 MZ |
294 | #define ICC_IAR1_EL1_SPURIOUS 0x3ff |
295 | ||
021f6537 MZ |
296 | #define ICC_SRE_EL2_SRE (1 << 0) |
297 | #define ICC_SRE_EL2_ENABLE (1 << 3) | |
298 | ||
7e580278 AP |
299 | #define ICC_SGI1R_TARGET_LIST_SHIFT 0 |
300 | #define ICC_SGI1R_TARGET_LIST_MASK (0xffff << ICC_SGI1R_TARGET_LIST_SHIFT) | |
301 | #define ICC_SGI1R_AFFINITY_1_SHIFT 16 | |
302 | #define ICC_SGI1R_AFFINITY_1_MASK (0xff << ICC_SGI1R_AFFINITY_1_SHIFT) | |
303 | #define ICC_SGI1R_SGI_ID_SHIFT 24 | |
304 | #define ICC_SGI1R_SGI_ID_MASK (0xff << ICC_SGI1R_SGI_ID_SHIFT) | |
305 | #define ICC_SGI1R_AFFINITY_2_SHIFT 32 | |
306 | #define ICC_SGI1R_AFFINITY_2_MASK (0xffULL << ICC_SGI1R_AFFINITY_1_SHIFT) | |
307 | #define ICC_SGI1R_IRQ_ROUTING_MODE_BIT 40 | |
308 | #define ICC_SGI1R_AFFINITY_3_SHIFT 48 | |
309 | #define ICC_SGI1R_AFFINITY_3_MASK (0xffULL << ICC_SGI1R_AFFINITY_1_SHIFT) | |
310 | ||
7936e914 | 311 | #include <asm/arch_gicv3.h> |
021f6537 MZ |
312 | |
313 | #ifndef __ASSEMBLY__ | |
314 | ||
b48ac83d MZ |
315 | /* |
316 | * We need a value to serve as a irq-type for LPIs. Choose one that will | |
317 | * hopefully pique the interest of the reviewer. | |
318 | */ | |
319 | #define GIC_IRQ_TYPE_LPI 0xa110c8ed | |
320 | ||
f5c1434c MZ |
321 | struct rdists { |
322 | struct { | |
323 | void __iomem *rd_base; | |
324 | struct page *pend_page; | |
325 | phys_addr_t phys_base; | |
326 | } __percpu *rdist; | |
327 | struct page *prop_page; | |
328 | int id_bits; | |
329 | u64 flags; | |
330 | }; | |
331 | ||
7936e914 | 332 | struct irq_domain; |
059393c5 | 333 | struct device_node; |
7936e914 JPB |
334 | int its_cpu_init(void); |
335 | int its_init(struct device_node *node, struct rdists *rdists, | |
336 | struct irq_domain *domain); | |
0b6a3da9 | 337 | |
7cabd008 MZ |
338 | static inline bool gic_enable_sre(void) |
339 | { | |
7936e914 | 340 | u32 val; |
7cabd008 | 341 | |
7936e914 | 342 | val = gic_read_sre(); |
7cabd008 MZ |
343 | if (val & ICC_SRE_EL1_SRE) |
344 | return true; | |
345 | ||
346 | val |= ICC_SRE_EL1_SRE; | |
7936e914 JPB |
347 | gic_write_sre(val); |
348 | val = gic_read_sre(); | |
7cabd008 MZ |
349 | |
350 | return !!(val & ICC_SRE_EL1_SRE); | |
351 | } | |
352 | ||
021f6537 MZ |
353 | #endif |
354 | ||
355 | #endif |