Commit | Line | Data |
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8187a2b7 ZN |
1 | #ifndef _INTEL_RINGBUFFER_H_ |
2 | #define _INTEL_RINGBUFFER_H_ | |
3 | ||
44e895a8 | 4 | #include <linux/hashtable.h> |
06fbca71 | 5 | #include "i915_gem_batch_pool.h" |
44e895a8 BV |
6 | |
7 | #define I915_CMD_HASH_ORDER 9 | |
8 | ||
4712274c OM |
9 | /* Early gen2 devices have a cacheline of just 32 bytes, using 64 is overkill, |
10 | * but keeps the logic simple. Indeed, the whole purpose of this macro is just | |
11 | * to give some inclination as to some of the magic values used in the various | |
12 | * workarounds! | |
13 | */ | |
14 | #define CACHELINE_BYTES 64 | |
17ee950d | 15 | #define CACHELINE_DWORDS (CACHELINE_BYTES / sizeof(uint32_t)) |
4712274c | 16 | |
633cf8f5 VS |
17 | /* |
18 | * Gen2 BSpec "1. Programming Environment" / 1.4.4.6 "Ring Buffer Use" | |
19 | * Gen3 BSpec "vol1c Memory Interface Functions" / 2.3.4.5 "Ring Buffer Use" | |
20 | * Gen4+ BSpec "vol1c Memory Interface and Command Stream" / 5.3.4.5 "Ring Buffer Use" | |
21 | * | |
22 | * "If the Ring Buffer Head Pointer and the Tail Pointer are on the same | |
23 | * cacheline, the Head Pointer must not be greater than the Tail | |
24 | * Pointer." | |
25 | */ | |
26 | #define I915_RING_FREE_SPACE 64 | |
27 | ||
8187a2b7 | 28 | struct intel_hw_status_page { |
4225d0f2 | 29 | u32 *page_addr; |
8187a2b7 | 30 | unsigned int gfx_addr; |
05394f39 | 31 | struct drm_i915_gem_object *obj; |
8187a2b7 ZN |
32 | }; |
33 | ||
b7287d80 BW |
34 | #define I915_READ_TAIL(ring) I915_READ(RING_TAIL((ring)->mmio_base)) |
35 | #define I915_WRITE_TAIL(ring, val) I915_WRITE(RING_TAIL((ring)->mmio_base), val) | |
cae5852d | 36 | |
b7287d80 BW |
37 | #define I915_READ_START(ring) I915_READ(RING_START((ring)->mmio_base)) |
38 | #define I915_WRITE_START(ring, val) I915_WRITE(RING_START((ring)->mmio_base), val) | |
cae5852d | 39 | |
b7287d80 BW |
40 | #define I915_READ_HEAD(ring) I915_READ(RING_HEAD((ring)->mmio_base)) |
41 | #define I915_WRITE_HEAD(ring, val) I915_WRITE(RING_HEAD((ring)->mmio_base), val) | |
cae5852d | 42 | |
b7287d80 BW |
43 | #define I915_READ_CTL(ring) I915_READ(RING_CTL((ring)->mmio_base)) |
44 | #define I915_WRITE_CTL(ring, val) I915_WRITE(RING_CTL((ring)->mmio_base), val) | |
cae5852d | 45 | |
b7287d80 BW |
46 | #define I915_READ_IMR(ring) I915_READ(RING_IMR((ring)->mmio_base)) |
47 | #define I915_WRITE_IMR(ring, val) I915_WRITE(RING_IMR((ring)->mmio_base), val) | |
870e86dd | 48 | |
e9fea574 | 49 | #define I915_READ_MODE(ring) I915_READ(RING_MI_MODE((ring)->mmio_base)) |
9991ae78 | 50 | #define I915_WRITE_MODE(ring, val) I915_WRITE(RING_MI_MODE((ring)->mmio_base), val) |
e9fea574 | 51 | |
3e78998a BW |
52 | /* seqno size is actually only a uint32, but since we plan to use MI_FLUSH_DW to |
53 | * do the writes, and that must have qw aligned offsets, simply pretend it's 8b. | |
54 | */ | |
55 | #define i915_semaphore_seqno_size sizeof(uint64_t) | |
56 | #define GEN8_SIGNAL_OFFSET(__ring, to) \ | |
57 | (i915_gem_obj_ggtt_offset(dev_priv->semaphore_obj) + \ | |
58 | ((__ring)->id * I915_NUM_RINGS * i915_semaphore_seqno_size) + \ | |
59 | (i915_semaphore_seqno_size * (to))) | |
60 | ||
61 | #define GEN8_WAIT_OFFSET(__ring, from) \ | |
62 | (i915_gem_obj_ggtt_offset(dev_priv->semaphore_obj) + \ | |
63 | ((from) * I915_NUM_RINGS * i915_semaphore_seqno_size) + \ | |
64 | (i915_semaphore_seqno_size * (__ring)->id)) | |
65 | ||
66 | #define GEN8_RING_SEMAPHORE_INIT do { \ | |
67 | if (!dev_priv->semaphore_obj) { \ | |
68 | break; \ | |
69 | } \ | |
70 | ring->semaphore.signal_ggtt[RCS] = GEN8_SIGNAL_OFFSET(ring, RCS); \ | |
71 | ring->semaphore.signal_ggtt[VCS] = GEN8_SIGNAL_OFFSET(ring, VCS); \ | |
72 | ring->semaphore.signal_ggtt[BCS] = GEN8_SIGNAL_OFFSET(ring, BCS); \ | |
73 | ring->semaphore.signal_ggtt[VECS] = GEN8_SIGNAL_OFFSET(ring, VECS); \ | |
74 | ring->semaphore.signal_ggtt[VCS2] = GEN8_SIGNAL_OFFSET(ring, VCS2); \ | |
75 | ring->semaphore.signal_ggtt[ring->id] = MI_SEMAPHORE_SYNC_INVALID; \ | |
76 | } while(0) | |
77 | ||
f2f4d82f | 78 | enum intel_ring_hangcheck_action { |
da661464 | 79 | HANGCHECK_IDLE = 0, |
f2f4d82f JN |
80 | HANGCHECK_WAIT, |
81 | HANGCHECK_ACTIVE, | |
f260fe7b | 82 | HANGCHECK_ACTIVE_LOOP, |
f2f4d82f JN |
83 | HANGCHECK_KICK, |
84 | HANGCHECK_HUNG, | |
85 | }; | |
ad8beaea | 86 | |
b6b0fac0 MK |
87 | #define HANGCHECK_SCORE_RING_HUNG 31 |
88 | ||
92cab734 | 89 | struct intel_ring_hangcheck { |
50877445 | 90 | u64 acthd; |
f260fe7b | 91 | u64 max_acthd; |
92cab734 | 92 | u32 seqno; |
05407ff8 | 93 | int score; |
ad8beaea | 94 | enum intel_ring_hangcheck_action action; |
4be17381 | 95 | int deadlock; |
92cab734 MK |
96 | }; |
97 | ||
8ee14975 OM |
98 | struct intel_ringbuffer { |
99 | struct drm_i915_gem_object *obj; | |
100 | void __iomem *virtual_start; | |
101 | ||
0c7dd53b DV |
102 | struct intel_engine_cs *ring; |
103 | ||
8ee14975 OM |
104 | u32 head; |
105 | u32 tail; | |
106 | int space; | |
107 | int size; | |
108 | int effective_size; | |
29b1b415 JH |
109 | int reserved_size; |
110 | int reserved_tail; | |
111 | bool reserved_in_use; | |
8ee14975 OM |
112 | |
113 | /** We track the position of the requests in the ring buffer, and | |
114 | * when each is retired we increment last_retired_head as the GPU | |
115 | * must have finished processing the request and so we know we | |
116 | * can advance the ringbuffer up to that position. | |
117 | * | |
118 | * last_retired_head is set to -1 after the value is consumed so | |
119 | * we can detect new retirements. | |
120 | */ | |
121 | u32 last_retired_head; | |
122 | }; | |
123 | ||
21076372 | 124 | struct intel_context; |
4e86f725 | 125 | struct drm_i915_reg_descriptor; |
21076372 | 126 | |
17ee950d AS |
127 | /* |
128 | * we use a single page to load ctx workarounds so all of these | |
129 | * values are referred in terms of dwords | |
130 | * | |
131 | * struct i915_wa_ctx_bb: | |
132 | * offset: specifies batch starting position, also helpful in case | |
133 | * if we want to have multiple batches at different offsets based on | |
134 | * some criteria. It is not a requirement at the moment but provides | |
135 | * an option for future use. | |
136 | * size: size of the batch in DWORDS | |
137 | */ | |
138 | struct i915_ctx_workarounds { | |
139 | struct i915_wa_ctx_bb { | |
140 | u32 offset; | |
141 | u32 size; | |
142 | } indirect_ctx, per_ctx; | |
143 | struct drm_i915_gem_object *obj; | |
144 | }; | |
145 | ||
a4872ba6 | 146 | struct intel_engine_cs { |
8187a2b7 | 147 | const char *name; |
9220434a | 148 | enum intel_ring_id { |
96154f2f DV |
149 | RCS = 0x0, |
150 | VCS, | |
151 | BCS, | |
4a3dd19d | 152 | VECS, |
845f74a7 | 153 | VCS2 |
9220434a | 154 | } id; |
845f74a7 | 155 | #define I915_NUM_RINGS 5 |
b1a93306 | 156 | #define LAST_USER_RING (VECS + 1) |
333e9fe9 | 157 | u32 mmio_base; |
8187a2b7 | 158 | struct drm_device *dev; |
8ee14975 | 159 | struct intel_ringbuffer *buffer; |
8187a2b7 | 160 | |
06fbca71 CW |
161 | /* |
162 | * A pool of objects to use as shadow copies of client batch buffers | |
163 | * when the command parser is enabled. Prevents the client from | |
164 | * modifying the batch contents after software parsing. | |
165 | */ | |
166 | struct i915_gem_batch_pool batch_pool; | |
167 | ||
8187a2b7 | 168 | struct intel_hw_status_page status_page; |
17ee950d | 169 | struct i915_ctx_workarounds wa_ctx; |
8187a2b7 | 170 | |
c7113cc3 | 171 | unsigned irq_refcount; /* protected by dev_priv->irq_lock */ |
6a848ccb | 172 | u32 irq_enable_mask; /* bitmask to enable ring interrupt */ |
581c26e8 | 173 | struct drm_i915_gem_request *trace_irq_req; |
a4872ba6 OM |
174 | bool __must_check (*irq_get)(struct intel_engine_cs *ring); |
175 | void (*irq_put)(struct intel_engine_cs *ring); | |
8187a2b7 | 176 | |
ecfe00d8 | 177 | int (*init_hw)(struct intel_engine_cs *ring); |
8187a2b7 | 178 | |
8753181e | 179 | int (*init_context)(struct drm_i915_gem_request *req); |
86d7f238 | 180 | |
a4872ba6 | 181 | void (*write_tail)(struct intel_engine_cs *ring, |
297b0c5b | 182 | u32 value); |
a4872ba6 | 183 | int __must_check (*flush)(struct intel_engine_cs *ring, |
b72f3acb CW |
184 | u32 invalidate_domains, |
185 | u32 flush_domains); | |
a4872ba6 | 186 | int (*add_request)(struct intel_engine_cs *ring); |
b2eadbc8 CW |
187 | /* Some chipsets are not quite as coherent as advertised and need |
188 | * an expensive kick to force a true read of the up-to-date seqno. | |
189 | * However, the up-to-date seqno is not always required and the last | |
190 | * seen value is good enough. Note that the seqno will always be | |
191 | * monotonic, even if not coherent. | |
192 | */ | |
a4872ba6 | 193 | u32 (*get_seqno)(struct intel_engine_cs *ring, |
b2eadbc8 | 194 | bool lazy_coherency); |
a4872ba6 | 195 | void (*set_seqno)(struct intel_engine_cs *ring, |
b70ec5bf | 196 | u32 seqno); |
a4872ba6 | 197 | int (*dispatch_execbuffer)(struct intel_engine_cs *ring, |
9bcb144c | 198 | u64 offset, u32 length, |
8e004efc | 199 | unsigned dispatch_flags); |
d7d4eedd | 200 | #define I915_DISPATCH_SECURE 0x1 |
b45305fc | 201 | #define I915_DISPATCH_PINNED 0x2 |
a4872ba6 | 202 | void (*cleanup)(struct intel_engine_cs *ring); |
ebc348b2 | 203 | |
3e78998a BW |
204 | /* GEN8 signal/wait table - never trust comments! |
205 | * signal to signal to signal to signal to signal to | |
206 | * RCS VCS BCS VECS VCS2 | |
207 | * -------------------------------------------------------------------- | |
208 | * RCS | NOP (0x00) | VCS (0x08) | BCS (0x10) | VECS (0x18) | VCS2 (0x20) | | |
209 | * |------------------------------------------------------------------- | |
210 | * VCS | RCS (0x28) | NOP (0x30) | BCS (0x38) | VECS (0x40) | VCS2 (0x48) | | |
211 | * |------------------------------------------------------------------- | |
212 | * BCS | RCS (0x50) | VCS (0x58) | NOP (0x60) | VECS (0x68) | VCS2 (0x70) | | |
213 | * |------------------------------------------------------------------- | |
214 | * VECS | RCS (0x78) | VCS (0x80) | BCS (0x88) | NOP (0x90) | VCS2 (0x98) | | |
215 | * |------------------------------------------------------------------- | |
216 | * VCS2 | RCS (0xa0) | VCS (0xa8) | BCS (0xb0) | VECS (0xb8) | NOP (0xc0) | | |
217 | * |------------------------------------------------------------------- | |
218 | * | |
219 | * Generalization: | |
220 | * f(x, y) := (x->id * NUM_RINGS * seqno_size) + (seqno_size * y->id) | |
221 | * ie. transpose of g(x, y) | |
222 | * | |
223 | * sync from sync from sync from sync from sync from | |
224 | * RCS VCS BCS VECS VCS2 | |
225 | * -------------------------------------------------------------------- | |
226 | * RCS | NOP (0x00) | VCS (0x28) | BCS (0x50) | VECS (0x78) | VCS2 (0xa0) | | |
227 | * |------------------------------------------------------------------- | |
228 | * VCS | RCS (0x08) | NOP (0x30) | BCS (0x58) | VECS (0x80) | VCS2 (0xa8) | | |
229 | * |------------------------------------------------------------------- | |
230 | * BCS | RCS (0x10) | VCS (0x38) | NOP (0x60) | VECS (0x88) | VCS2 (0xb0) | | |
231 | * |------------------------------------------------------------------- | |
232 | * VECS | RCS (0x18) | VCS (0x40) | BCS (0x68) | NOP (0x90) | VCS2 (0xb8) | | |
233 | * |------------------------------------------------------------------- | |
234 | * VCS2 | RCS (0x20) | VCS (0x48) | BCS (0x70) | VECS (0x98) | NOP (0xc0) | | |
235 | * |------------------------------------------------------------------- | |
236 | * | |
237 | * Generalization: | |
238 | * g(x, y) := (y->id * NUM_RINGS * seqno_size) + (seqno_size * x->id) | |
239 | * ie. transpose of f(x, y) | |
240 | */ | |
ebc348b2 BW |
241 | struct { |
242 | u32 sync_seqno[I915_NUM_RINGS-1]; | |
78325f2d | 243 | |
3e78998a BW |
244 | union { |
245 | struct { | |
246 | /* our mbox written by others */ | |
247 | u32 wait[I915_NUM_RINGS]; | |
248 | /* mboxes this ring signals to */ | |
249 | u32 signal[I915_NUM_RINGS]; | |
250 | } mbox; | |
251 | u64 signal_ggtt[I915_NUM_RINGS]; | |
252 | }; | |
78325f2d BW |
253 | |
254 | /* AKA wait() */ | |
a4872ba6 OM |
255 | int (*sync_to)(struct intel_engine_cs *ring, |
256 | struct intel_engine_cs *to, | |
78325f2d | 257 | u32 seqno); |
a4872ba6 | 258 | int (*signal)(struct intel_engine_cs *signaller, |
024a43e1 BW |
259 | /* num_dwords needed by caller */ |
260 | unsigned int num_dwords); | |
ebc348b2 | 261 | } semaphore; |
ad776f8b | 262 | |
4da46e1e | 263 | /* Execlists */ |
acdd884a MT |
264 | spinlock_t execlist_lock; |
265 | struct list_head execlist_queue; | |
c86ee3a9 | 266 | struct list_head execlist_retired_req_list; |
e981e7b1 | 267 | u8 next_context_status_buffer; |
73d477f6 | 268 | u32 irq_keep_mask; /* bitmask for interrupts that should not be masked */ |
72f95afa NH |
269 | int (*emit_request)(struct intel_ringbuffer *ringbuf, |
270 | struct drm_i915_gem_request *request); | |
4712274c | 271 | int (*emit_flush)(struct intel_ringbuffer *ringbuf, |
21076372 | 272 | struct intel_context *ctx, |
4712274c OM |
273 | u32 invalidate_domains, |
274 | u32 flush_domains); | |
15648585 | 275 | int (*emit_bb_start)(struct intel_ringbuffer *ringbuf, |
21076372 | 276 | struct intel_context *ctx, |
8e004efc | 277 | u64 offset, unsigned dispatch_flags); |
4da46e1e | 278 | |
8187a2b7 ZN |
279 | /** |
280 | * List of objects currently involved in rendering from the | |
281 | * ringbuffer. | |
282 | * | |
283 | * Includes buffers having the contents of their GPU caches | |
97b2a6a1 | 284 | * flushed, not necessarily primitives. last_read_req |
8187a2b7 ZN |
285 | * represents when the rendering involved will be completed. |
286 | * | |
287 | * A reference is held on the buffer while on this list. | |
288 | */ | |
289 | struct list_head active_list; | |
290 | ||
291 | /** | |
292 | * List of breadcrumbs associated with GPU requests currently | |
293 | * outstanding. | |
294 | */ | |
295 | struct list_head request_list; | |
296 | ||
a56ba56c CW |
297 | /** |
298 | * Do we have some not yet emitted requests outstanding? | |
299 | */ | |
6259cead | 300 | struct drm_i915_gem_request *outstanding_lazy_request; |
cc889e0f | 301 | bool gpu_caches_dirty; |
a56ba56c | 302 | |
8187a2b7 | 303 | wait_queue_head_t irq_queue; |
8d19215b | 304 | |
273497e5 OM |
305 | struct intel_context *default_context; |
306 | struct intel_context *last_context; | |
40521054 | 307 | |
92cab734 MK |
308 | struct intel_ring_hangcheck hangcheck; |
309 | ||
0d1aacac CW |
310 | struct { |
311 | struct drm_i915_gem_object *obj; | |
312 | u32 gtt_offset; | |
313 | volatile u32 *cpu_page; | |
314 | } scratch; | |
351e3db2 | 315 | |
44e895a8 BV |
316 | bool needs_cmd_parser; |
317 | ||
351e3db2 | 318 | /* |
44e895a8 | 319 | * Table of commands the command parser needs to know about |
351e3db2 BV |
320 | * for this ring. |
321 | */ | |
44e895a8 | 322 | DECLARE_HASHTABLE(cmd_hash, I915_CMD_HASH_ORDER); |
351e3db2 BV |
323 | |
324 | /* | |
325 | * Table of registers allowed in commands that read/write registers. | |
326 | */ | |
4e86f725 | 327 | const struct drm_i915_reg_descriptor *reg_table; |
351e3db2 BV |
328 | int reg_count; |
329 | ||
330 | /* | |
331 | * Table of registers allowed in commands that read/write registers, but | |
332 | * only from the DRM master. | |
333 | */ | |
4e86f725 | 334 | const struct drm_i915_reg_descriptor *master_reg_table; |
351e3db2 BV |
335 | int master_reg_count; |
336 | ||
337 | /* | |
338 | * Returns the bitmask for the length field of the specified command. | |
339 | * Return 0 for an unrecognized/invalid command. | |
340 | * | |
341 | * If the command parser finds an entry for a command in the ring's | |
342 | * cmd_tables, it gets the command's length based on the table entry. | |
343 | * If not, it calls this function to determine the per-ring length field | |
344 | * encoding for the command (i.e. certain opcode ranges use certain bits | |
345 | * to encode the command length in the header). | |
346 | */ | |
347 | u32 (*get_cmd_length_mask)(u32 cmd_header); | |
8187a2b7 ZN |
348 | }; |
349 | ||
48d82387 | 350 | bool intel_ring_initialized(struct intel_engine_cs *ring); |
b4519513 | 351 | |
96154f2f | 352 | static inline unsigned |
a4872ba6 | 353 | intel_ring_flag(struct intel_engine_cs *ring) |
96154f2f DV |
354 | { |
355 | return 1 << ring->id; | |
356 | } | |
357 | ||
1ec14ad3 | 358 | static inline u32 |
a4872ba6 OM |
359 | intel_ring_sync_index(struct intel_engine_cs *ring, |
360 | struct intel_engine_cs *other) | |
1ec14ad3 CW |
361 | { |
362 | int idx; | |
363 | ||
364 | /* | |
ddd4dbc6 RV |
365 | * rcs -> 0 = vcs, 1 = bcs, 2 = vecs, 3 = vcs2; |
366 | * vcs -> 0 = bcs, 1 = vecs, 2 = vcs2, 3 = rcs; | |
367 | * bcs -> 0 = vecs, 1 = vcs2. 2 = rcs, 3 = vcs; | |
368 | * vecs -> 0 = vcs2, 1 = rcs, 2 = vcs, 3 = bcs; | |
369 | * vcs2 -> 0 = rcs, 1 = vcs, 2 = bcs, 3 = vecs; | |
1ec14ad3 CW |
370 | */ |
371 | ||
372 | idx = (other - ring) - 1; | |
373 | if (idx < 0) | |
374 | idx += I915_NUM_RINGS; | |
375 | ||
376 | return idx; | |
377 | } | |
378 | ||
8187a2b7 | 379 | static inline u32 |
a4872ba6 | 380 | intel_read_status_page(struct intel_engine_cs *ring, |
78501eac | 381 | int reg) |
8187a2b7 | 382 | { |
4225d0f2 DV |
383 | /* Ensure that the compiler doesn't optimize away the load. */ |
384 | barrier(); | |
385 | return ring->status_page.page_addr[reg]; | |
8187a2b7 ZN |
386 | } |
387 | ||
b70ec5bf | 388 | static inline void |
a4872ba6 | 389 | intel_write_status_page(struct intel_engine_cs *ring, |
b70ec5bf MK |
390 | int reg, u32 value) |
391 | { | |
392 | ring->status_page.page_addr[reg] = value; | |
393 | } | |
394 | ||
311bd68e CW |
395 | /** |
396 | * Reads a dword out of the status page, which is written to from the command | |
397 | * queue by automatic updates, MI_REPORT_HEAD, MI_STORE_DATA_INDEX, or | |
398 | * MI_STORE_DATA_IMM. | |
399 | * | |
400 | * The following dwords have a reserved meaning: | |
401 | * 0x00: ISR copy, updated when an ISR bit not set in the HWSTAM changes. | |
402 | * 0x04: ring 0 head pointer | |
403 | * 0x05: ring 1 head pointer (915-class) | |
404 | * 0x06: ring 2 head pointer (915-class) | |
405 | * 0x10-0x1b: Context status DWords (GM45) | |
406 | * 0x1f: Last written status offset. (GM45) | |
b07da53c | 407 | * 0x20-0x2f: Reserved (Gen6+) |
311bd68e | 408 | * |
b07da53c | 409 | * The area from dword 0x30 to 0x3ff is available for driver usage. |
311bd68e | 410 | */ |
b07da53c TD |
411 | #define I915_GEM_HWS_INDEX 0x30 |
412 | #define I915_GEM_HWS_SCRATCH_INDEX 0x40 | |
9a289771 | 413 | #define I915_GEM_HWS_SCRATCH_ADDR (I915_GEM_HWS_SCRATCH_INDEX << MI_STORE_DWORD_INDEX_SHIFT) |
311bd68e | 414 | |
7ba717cf TD |
415 | void intel_unpin_ringbuffer_obj(struct intel_ringbuffer *ringbuf); |
416 | int intel_pin_and_map_ringbuffer_obj(struct drm_device *dev, | |
417 | struct intel_ringbuffer *ringbuf); | |
84c2377f OM |
418 | void intel_destroy_ringbuffer_obj(struct intel_ringbuffer *ringbuf); |
419 | int intel_alloc_ringbuffer_obj(struct drm_device *dev, | |
420 | struct intel_ringbuffer *ringbuf); | |
421 | ||
a4872ba6 OM |
422 | void intel_stop_ring_buffer(struct intel_engine_cs *ring); |
423 | void intel_cleanup_ring_buffer(struct intel_engine_cs *ring); | |
96f298aa | 424 | |
6689cb2b JH |
425 | int intel_ring_alloc_request_extras(struct drm_i915_gem_request *request); |
426 | ||
a4872ba6 OM |
427 | int __must_check intel_ring_begin(struct intel_engine_cs *ring, int n); |
428 | int __must_check intel_ring_cacheline_align(struct intel_engine_cs *ring); | |
429 | static inline void intel_ring_emit(struct intel_engine_cs *ring, | |
78501eac | 430 | u32 data) |
e898cd22 | 431 | { |
93b0a4e0 OM |
432 | struct intel_ringbuffer *ringbuf = ring->buffer; |
433 | iowrite32(data, ringbuf->virtual_start + ringbuf->tail); | |
434 | ringbuf->tail += 4; | |
e898cd22 | 435 | } |
a4872ba6 | 436 | static inline void intel_ring_advance(struct intel_engine_cs *ring) |
09246732 | 437 | { |
93b0a4e0 OM |
438 | struct intel_ringbuffer *ringbuf = ring->buffer; |
439 | ringbuf->tail &= ringbuf->size - 1; | |
09246732 | 440 | } |
82e104cc | 441 | int __intel_ring_space(int head, int tail, int size); |
ebd0fd4b | 442 | void intel_ring_update_space(struct intel_ringbuffer *ringbuf); |
82e104cc OM |
443 | int intel_ring_space(struct intel_ringbuffer *ringbuf); |
444 | bool intel_ring_stopped(struct intel_engine_cs *ring); | |
09246732 | 445 | |
a4872ba6 OM |
446 | int __must_check intel_ring_idle(struct intel_engine_cs *ring); |
447 | void intel_ring_init_seqno(struct intel_engine_cs *ring, u32 seqno); | |
4866d729 | 448 | int intel_ring_flush_all_caches(struct drm_i915_gem_request *req); |
2f20055d | 449 | int intel_ring_invalidate_all_caches(struct drm_i915_gem_request *req); |
8187a2b7 | 450 | |
9b1136d5 OM |
451 | void intel_fini_pipe_control(struct intel_engine_cs *ring); |
452 | int intel_init_pipe_control(struct intel_engine_cs *ring); | |
453 | ||
5c1143bb XH |
454 | int intel_init_render_ring_buffer(struct drm_device *dev); |
455 | int intel_init_bsd_ring_buffer(struct drm_device *dev); | |
845f74a7 | 456 | int intel_init_bsd2_ring_buffer(struct drm_device *dev); |
549f7365 | 457 | int intel_init_blt_ring_buffer(struct drm_device *dev); |
9a8a2213 | 458 | int intel_init_vebox_ring_buffer(struct drm_device *dev); |
8187a2b7 | 459 | |
a4872ba6 | 460 | u64 intel_ring_get_active_head(struct intel_engine_cs *ring); |
79f321b7 | 461 | |
771b9a53 MT |
462 | int init_workarounds_ring(struct intel_engine_cs *ring); |
463 | ||
1b5d063f | 464 | static inline u32 intel_ring_get_tail(struct intel_ringbuffer *ringbuf) |
a71d8d94 | 465 | { |
1b5d063f | 466 | return ringbuf->tail; |
a71d8d94 CW |
467 | } |
468 | ||
b793a00a JH |
469 | static inline struct drm_i915_gem_request * |
470 | intel_ring_get_request(struct intel_engine_cs *ring) | |
471 | { | |
6259cead JH |
472 | BUG_ON(ring->outstanding_lazy_request == NULL); |
473 | return ring->outstanding_lazy_request; | |
b793a00a JH |
474 | } |
475 | ||
29b1b415 JH |
476 | /* |
477 | * Arbitrary size for largest possible 'add request' sequence. The code paths | |
478 | * are complex and variable. Empirical measurement shows that the worst case | |
479 | * is ILK at 136 words. Reserving too much is better than reserving too little | |
480 | * as that allows for corner cases that might have been missed. So the figure | |
481 | * has been rounded up to 160 words. | |
482 | */ | |
483 | #define MIN_SPACE_FOR_ADD_REQUEST 160 | |
484 | ||
485 | /* | |
486 | * Reserve space in the ring to guarantee that the i915_add_request() call | |
487 | * will always have sufficient room to do its stuff. The request creation | |
488 | * code calls this automatically. | |
489 | */ | |
490 | void intel_ring_reserved_space_reserve(struct intel_ringbuffer *ringbuf, int size); | |
491 | /* Cancel the reservation, e.g. because the request is being discarded. */ | |
492 | void intel_ring_reserved_space_cancel(struct intel_ringbuffer *ringbuf); | |
493 | /* Use the reserved space - for use by i915_add_request() only. */ | |
494 | void intel_ring_reserved_space_use(struct intel_ringbuffer *ringbuf); | |
495 | /* Finish with the reserved space - for use by i915_add_request() only. */ | |
496 | void intel_ring_reserved_space_end(struct intel_ringbuffer *ringbuf); | |
497 | ||
8187a2b7 | 498 | #endif /* _INTEL_RINGBUFFER_H_ */ |