Commit | Line | Data |
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8187a2b7 ZN |
1 | #ifndef _INTEL_RINGBUFFER_H_ |
2 | #define _INTEL_RINGBUFFER_H_ | |
3 | ||
44e895a8 BV |
4 | #include <linux/hashtable.h> |
5 | ||
6 | #define I915_CMD_HASH_ORDER 9 | |
7 | ||
4712274c OM |
8 | /* Early gen2 devices have a cacheline of just 32 bytes, using 64 is overkill, |
9 | * but keeps the logic simple. Indeed, the whole purpose of this macro is just | |
10 | * to give some inclination as to some of the magic values used in the various | |
11 | * workarounds! | |
12 | */ | |
13 | #define CACHELINE_BYTES 64 | |
14 | ||
633cf8f5 VS |
15 | /* |
16 | * Gen2 BSpec "1. Programming Environment" / 1.4.4.6 "Ring Buffer Use" | |
17 | * Gen3 BSpec "vol1c Memory Interface Functions" / 2.3.4.5 "Ring Buffer Use" | |
18 | * Gen4+ BSpec "vol1c Memory Interface and Command Stream" / 5.3.4.5 "Ring Buffer Use" | |
19 | * | |
20 | * "If the Ring Buffer Head Pointer and the Tail Pointer are on the same | |
21 | * cacheline, the Head Pointer must not be greater than the Tail | |
22 | * Pointer." | |
23 | */ | |
24 | #define I915_RING_FREE_SPACE 64 | |
25 | ||
8187a2b7 | 26 | struct intel_hw_status_page { |
4225d0f2 | 27 | u32 *page_addr; |
8187a2b7 | 28 | unsigned int gfx_addr; |
05394f39 | 29 | struct drm_i915_gem_object *obj; |
8187a2b7 ZN |
30 | }; |
31 | ||
b7287d80 BW |
32 | #define I915_READ_TAIL(ring) I915_READ(RING_TAIL((ring)->mmio_base)) |
33 | #define I915_WRITE_TAIL(ring, val) I915_WRITE(RING_TAIL((ring)->mmio_base), val) | |
cae5852d | 34 | |
b7287d80 BW |
35 | #define I915_READ_START(ring) I915_READ(RING_START((ring)->mmio_base)) |
36 | #define I915_WRITE_START(ring, val) I915_WRITE(RING_START((ring)->mmio_base), val) | |
cae5852d | 37 | |
b7287d80 BW |
38 | #define I915_READ_HEAD(ring) I915_READ(RING_HEAD((ring)->mmio_base)) |
39 | #define I915_WRITE_HEAD(ring, val) I915_WRITE(RING_HEAD((ring)->mmio_base), val) | |
cae5852d | 40 | |
b7287d80 BW |
41 | #define I915_READ_CTL(ring) I915_READ(RING_CTL((ring)->mmio_base)) |
42 | #define I915_WRITE_CTL(ring, val) I915_WRITE(RING_CTL((ring)->mmio_base), val) | |
cae5852d | 43 | |
b7287d80 BW |
44 | #define I915_READ_IMR(ring) I915_READ(RING_IMR((ring)->mmio_base)) |
45 | #define I915_WRITE_IMR(ring, val) I915_WRITE(RING_IMR((ring)->mmio_base), val) | |
870e86dd | 46 | |
e9fea574 | 47 | #define I915_READ_MODE(ring) I915_READ(RING_MI_MODE((ring)->mmio_base)) |
9991ae78 | 48 | #define I915_WRITE_MODE(ring, val) I915_WRITE(RING_MI_MODE((ring)->mmio_base), val) |
e9fea574 | 49 | |
3e78998a BW |
50 | /* seqno size is actually only a uint32, but since we plan to use MI_FLUSH_DW to |
51 | * do the writes, and that must have qw aligned offsets, simply pretend it's 8b. | |
52 | */ | |
53 | #define i915_semaphore_seqno_size sizeof(uint64_t) | |
54 | #define GEN8_SIGNAL_OFFSET(__ring, to) \ | |
55 | (i915_gem_obj_ggtt_offset(dev_priv->semaphore_obj) + \ | |
56 | ((__ring)->id * I915_NUM_RINGS * i915_semaphore_seqno_size) + \ | |
57 | (i915_semaphore_seqno_size * (to))) | |
58 | ||
59 | #define GEN8_WAIT_OFFSET(__ring, from) \ | |
60 | (i915_gem_obj_ggtt_offset(dev_priv->semaphore_obj) + \ | |
61 | ((from) * I915_NUM_RINGS * i915_semaphore_seqno_size) + \ | |
62 | (i915_semaphore_seqno_size * (__ring)->id)) | |
63 | ||
64 | #define GEN8_RING_SEMAPHORE_INIT do { \ | |
65 | if (!dev_priv->semaphore_obj) { \ | |
66 | break; \ | |
67 | } \ | |
68 | ring->semaphore.signal_ggtt[RCS] = GEN8_SIGNAL_OFFSET(ring, RCS); \ | |
69 | ring->semaphore.signal_ggtt[VCS] = GEN8_SIGNAL_OFFSET(ring, VCS); \ | |
70 | ring->semaphore.signal_ggtt[BCS] = GEN8_SIGNAL_OFFSET(ring, BCS); \ | |
71 | ring->semaphore.signal_ggtt[VECS] = GEN8_SIGNAL_OFFSET(ring, VECS); \ | |
72 | ring->semaphore.signal_ggtt[VCS2] = GEN8_SIGNAL_OFFSET(ring, VCS2); \ | |
73 | ring->semaphore.signal_ggtt[ring->id] = MI_SEMAPHORE_SYNC_INVALID; \ | |
74 | } while(0) | |
75 | ||
f2f4d82f | 76 | enum intel_ring_hangcheck_action { |
da661464 | 77 | HANGCHECK_IDLE = 0, |
f2f4d82f JN |
78 | HANGCHECK_WAIT, |
79 | HANGCHECK_ACTIVE, | |
f260fe7b | 80 | HANGCHECK_ACTIVE_LOOP, |
f2f4d82f JN |
81 | HANGCHECK_KICK, |
82 | HANGCHECK_HUNG, | |
83 | }; | |
ad8beaea | 84 | |
b6b0fac0 MK |
85 | #define HANGCHECK_SCORE_RING_HUNG 31 |
86 | ||
92cab734 | 87 | struct intel_ring_hangcheck { |
50877445 | 88 | u64 acthd; |
f260fe7b | 89 | u64 max_acthd; |
92cab734 | 90 | u32 seqno; |
05407ff8 | 91 | int score; |
ad8beaea | 92 | enum intel_ring_hangcheck_action action; |
4be17381 | 93 | int deadlock; |
92cab734 MK |
94 | }; |
95 | ||
8ee14975 OM |
96 | struct intel_ringbuffer { |
97 | struct drm_i915_gem_object *obj; | |
98 | void __iomem *virtual_start; | |
99 | ||
0c7dd53b DV |
100 | struct intel_engine_cs *ring; |
101 | ||
582d67f0 OM |
102 | /* |
103 | * FIXME: This backpointer is an artifact of the history of how the | |
104 | * execlist patches came into being. It will get removed once the basic | |
105 | * code has landed. | |
106 | */ | |
107 | struct intel_context *FIXME_lrc_ctx; | |
108 | ||
8ee14975 OM |
109 | u32 head; |
110 | u32 tail; | |
111 | int space; | |
112 | int size; | |
113 | int effective_size; | |
114 | ||
115 | /** We track the position of the requests in the ring buffer, and | |
116 | * when each is retired we increment last_retired_head as the GPU | |
117 | * must have finished processing the request and so we know we | |
118 | * can advance the ringbuffer up to that position. | |
119 | * | |
120 | * last_retired_head is set to -1 after the value is consumed so | |
121 | * we can detect new retirements. | |
122 | */ | |
123 | u32 last_retired_head; | |
124 | }; | |
125 | ||
a4872ba6 | 126 | struct intel_engine_cs { |
8187a2b7 | 127 | const char *name; |
9220434a | 128 | enum intel_ring_id { |
96154f2f DV |
129 | RCS = 0x0, |
130 | VCS, | |
131 | BCS, | |
4a3dd19d | 132 | VECS, |
845f74a7 | 133 | VCS2 |
9220434a | 134 | } id; |
845f74a7 | 135 | #define I915_NUM_RINGS 5 |
b1a93306 | 136 | #define LAST_USER_RING (VECS + 1) |
333e9fe9 | 137 | u32 mmio_base; |
8187a2b7 | 138 | struct drm_device *dev; |
8ee14975 | 139 | struct intel_ringbuffer *buffer; |
8187a2b7 | 140 | |
8187a2b7 ZN |
141 | struct intel_hw_status_page status_page; |
142 | ||
c7113cc3 | 143 | unsigned irq_refcount; /* protected by dev_priv->irq_lock */ |
6a848ccb | 144 | u32 irq_enable_mask; /* bitmask to enable ring interrupt */ |
db53a302 | 145 | u32 trace_irq_seqno; |
a4872ba6 OM |
146 | bool __must_check (*irq_get)(struct intel_engine_cs *ring); |
147 | void (*irq_put)(struct intel_engine_cs *ring); | |
8187a2b7 | 148 | |
a4872ba6 | 149 | int (*init)(struct intel_engine_cs *ring); |
8187a2b7 | 150 | |
771b9a53 MT |
151 | int (*init_context)(struct intel_engine_cs *ring, |
152 | struct intel_context *ctx); | |
86d7f238 | 153 | |
a4872ba6 | 154 | void (*write_tail)(struct intel_engine_cs *ring, |
297b0c5b | 155 | u32 value); |
a4872ba6 | 156 | int __must_check (*flush)(struct intel_engine_cs *ring, |
b72f3acb CW |
157 | u32 invalidate_domains, |
158 | u32 flush_domains); | |
a4872ba6 | 159 | int (*add_request)(struct intel_engine_cs *ring); |
b2eadbc8 CW |
160 | /* Some chipsets are not quite as coherent as advertised and need |
161 | * an expensive kick to force a true read of the up-to-date seqno. | |
162 | * However, the up-to-date seqno is not always required and the last | |
163 | * seen value is good enough. Note that the seqno will always be | |
164 | * monotonic, even if not coherent. | |
165 | */ | |
a4872ba6 | 166 | u32 (*get_seqno)(struct intel_engine_cs *ring, |
b2eadbc8 | 167 | bool lazy_coherency); |
a4872ba6 | 168 | void (*set_seqno)(struct intel_engine_cs *ring, |
b70ec5bf | 169 | u32 seqno); |
a4872ba6 | 170 | int (*dispatch_execbuffer)(struct intel_engine_cs *ring, |
9bcb144c | 171 | u64 offset, u32 length, |
d7d4eedd CW |
172 | unsigned flags); |
173 | #define I915_DISPATCH_SECURE 0x1 | |
b45305fc | 174 | #define I915_DISPATCH_PINNED 0x2 |
a4872ba6 | 175 | void (*cleanup)(struct intel_engine_cs *ring); |
ebc348b2 | 176 | |
3e78998a BW |
177 | /* GEN8 signal/wait table - never trust comments! |
178 | * signal to signal to signal to signal to signal to | |
179 | * RCS VCS BCS VECS VCS2 | |
180 | * -------------------------------------------------------------------- | |
181 | * RCS | NOP (0x00) | VCS (0x08) | BCS (0x10) | VECS (0x18) | VCS2 (0x20) | | |
182 | * |------------------------------------------------------------------- | |
183 | * VCS | RCS (0x28) | NOP (0x30) | BCS (0x38) | VECS (0x40) | VCS2 (0x48) | | |
184 | * |------------------------------------------------------------------- | |
185 | * BCS | RCS (0x50) | VCS (0x58) | NOP (0x60) | VECS (0x68) | VCS2 (0x70) | | |
186 | * |------------------------------------------------------------------- | |
187 | * VECS | RCS (0x78) | VCS (0x80) | BCS (0x88) | NOP (0x90) | VCS2 (0x98) | | |
188 | * |------------------------------------------------------------------- | |
189 | * VCS2 | RCS (0xa0) | VCS (0xa8) | BCS (0xb0) | VECS (0xb8) | NOP (0xc0) | | |
190 | * |------------------------------------------------------------------- | |
191 | * | |
192 | * Generalization: | |
193 | * f(x, y) := (x->id * NUM_RINGS * seqno_size) + (seqno_size * y->id) | |
194 | * ie. transpose of g(x, y) | |
195 | * | |
196 | * sync from sync from sync from sync from sync from | |
197 | * RCS VCS BCS VECS VCS2 | |
198 | * -------------------------------------------------------------------- | |
199 | * RCS | NOP (0x00) | VCS (0x28) | BCS (0x50) | VECS (0x78) | VCS2 (0xa0) | | |
200 | * |------------------------------------------------------------------- | |
201 | * VCS | RCS (0x08) | NOP (0x30) | BCS (0x58) | VECS (0x80) | VCS2 (0xa8) | | |
202 | * |------------------------------------------------------------------- | |
203 | * BCS | RCS (0x10) | VCS (0x38) | NOP (0x60) | VECS (0x88) | VCS2 (0xb0) | | |
204 | * |------------------------------------------------------------------- | |
205 | * VECS | RCS (0x18) | VCS (0x40) | BCS (0x68) | NOP (0x90) | VCS2 (0xb8) | | |
206 | * |------------------------------------------------------------------- | |
207 | * VCS2 | RCS (0x20) | VCS (0x48) | BCS (0x70) | VECS (0x98) | NOP (0xc0) | | |
208 | * |------------------------------------------------------------------- | |
209 | * | |
210 | * Generalization: | |
211 | * g(x, y) := (y->id * NUM_RINGS * seqno_size) + (seqno_size * x->id) | |
212 | * ie. transpose of f(x, y) | |
213 | */ | |
ebc348b2 BW |
214 | struct { |
215 | u32 sync_seqno[I915_NUM_RINGS-1]; | |
78325f2d | 216 | |
3e78998a BW |
217 | union { |
218 | struct { | |
219 | /* our mbox written by others */ | |
220 | u32 wait[I915_NUM_RINGS]; | |
221 | /* mboxes this ring signals to */ | |
222 | u32 signal[I915_NUM_RINGS]; | |
223 | } mbox; | |
224 | u64 signal_ggtt[I915_NUM_RINGS]; | |
225 | }; | |
78325f2d BW |
226 | |
227 | /* AKA wait() */ | |
a4872ba6 OM |
228 | int (*sync_to)(struct intel_engine_cs *ring, |
229 | struct intel_engine_cs *to, | |
78325f2d | 230 | u32 seqno); |
a4872ba6 | 231 | int (*signal)(struct intel_engine_cs *signaller, |
024a43e1 BW |
232 | /* num_dwords needed by caller */ |
233 | unsigned int num_dwords); | |
ebc348b2 | 234 | } semaphore; |
ad776f8b | 235 | |
4da46e1e | 236 | /* Execlists */ |
acdd884a MT |
237 | spinlock_t execlist_lock; |
238 | struct list_head execlist_queue; | |
e981e7b1 | 239 | u8 next_context_status_buffer; |
73d477f6 | 240 | u32 irq_keep_mask; /* bitmask for interrupts that should not be masked */ |
4da46e1e | 241 | int (*emit_request)(struct intel_ringbuffer *ringbuf); |
4712274c OM |
242 | int (*emit_flush)(struct intel_ringbuffer *ringbuf, |
243 | u32 invalidate_domains, | |
244 | u32 flush_domains); | |
15648585 OM |
245 | int (*emit_bb_start)(struct intel_ringbuffer *ringbuf, |
246 | u64 offset, unsigned flags); | |
4da46e1e | 247 | |
8187a2b7 ZN |
248 | /** |
249 | * List of objects currently involved in rendering from the | |
250 | * ringbuffer. | |
251 | * | |
252 | * Includes buffers having the contents of their GPU caches | |
253 | * flushed, not necessarily primitives. last_rendering_seqno | |
254 | * represents when the rendering involved will be completed. | |
255 | * | |
256 | * A reference is held on the buffer while on this list. | |
257 | */ | |
258 | struct list_head active_list; | |
259 | ||
260 | /** | |
261 | * List of breadcrumbs associated with GPU requests currently | |
262 | * outstanding. | |
263 | */ | |
264 | struct list_head request_list; | |
265 | ||
a56ba56c CW |
266 | /** |
267 | * Do we have some not yet emitted requests outstanding? | |
268 | */ | |
3c0e234c | 269 | struct drm_i915_gem_request *preallocated_lazy_request; |
1823521d | 270 | u32 outstanding_lazy_seqno; |
cc889e0f | 271 | bool gpu_caches_dirty; |
c65355bb | 272 | bool fbc_dirty; |
a56ba56c | 273 | |
8187a2b7 | 274 | wait_queue_head_t irq_queue; |
8d19215b | 275 | |
273497e5 OM |
276 | struct intel_context *default_context; |
277 | struct intel_context *last_context; | |
40521054 | 278 | |
92cab734 MK |
279 | struct intel_ring_hangcheck hangcheck; |
280 | ||
0d1aacac CW |
281 | struct { |
282 | struct drm_i915_gem_object *obj; | |
283 | u32 gtt_offset; | |
284 | volatile u32 *cpu_page; | |
285 | } scratch; | |
351e3db2 | 286 | |
44e895a8 BV |
287 | bool needs_cmd_parser; |
288 | ||
351e3db2 | 289 | /* |
44e895a8 | 290 | * Table of commands the command parser needs to know about |
351e3db2 BV |
291 | * for this ring. |
292 | */ | |
44e895a8 | 293 | DECLARE_HASHTABLE(cmd_hash, I915_CMD_HASH_ORDER); |
351e3db2 BV |
294 | |
295 | /* | |
296 | * Table of registers allowed in commands that read/write registers. | |
297 | */ | |
298 | const u32 *reg_table; | |
299 | int reg_count; | |
300 | ||
301 | /* | |
302 | * Table of registers allowed in commands that read/write registers, but | |
303 | * only from the DRM master. | |
304 | */ | |
305 | const u32 *master_reg_table; | |
306 | int master_reg_count; | |
307 | ||
308 | /* | |
309 | * Returns the bitmask for the length field of the specified command. | |
310 | * Return 0 for an unrecognized/invalid command. | |
311 | * | |
312 | * If the command parser finds an entry for a command in the ring's | |
313 | * cmd_tables, it gets the command's length based on the table entry. | |
314 | * If not, it calls this function to determine the per-ring length field | |
315 | * encoding for the command (i.e. certain opcode ranges use certain bits | |
316 | * to encode the command length in the header). | |
317 | */ | |
318 | u32 (*get_cmd_length_mask)(u32 cmd_header); | |
8187a2b7 ZN |
319 | }; |
320 | ||
48d82387 | 321 | bool intel_ring_initialized(struct intel_engine_cs *ring); |
b4519513 | 322 | |
96154f2f | 323 | static inline unsigned |
a4872ba6 | 324 | intel_ring_flag(struct intel_engine_cs *ring) |
96154f2f DV |
325 | { |
326 | return 1 << ring->id; | |
327 | } | |
328 | ||
1ec14ad3 | 329 | static inline u32 |
a4872ba6 OM |
330 | intel_ring_sync_index(struct intel_engine_cs *ring, |
331 | struct intel_engine_cs *other) | |
1ec14ad3 CW |
332 | { |
333 | int idx; | |
334 | ||
335 | /* | |
ddd4dbc6 RV |
336 | * rcs -> 0 = vcs, 1 = bcs, 2 = vecs, 3 = vcs2; |
337 | * vcs -> 0 = bcs, 1 = vecs, 2 = vcs2, 3 = rcs; | |
338 | * bcs -> 0 = vecs, 1 = vcs2. 2 = rcs, 3 = vcs; | |
339 | * vecs -> 0 = vcs2, 1 = rcs, 2 = vcs, 3 = bcs; | |
340 | * vcs2 -> 0 = rcs, 1 = vcs, 2 = bcs, 3 = vecs; | |
1ec14ad3 CW |
341 | */ |
342 | ||
343 | idx = (other - ring) - 1; | |
344 | if (idx < 0) | |
345 | idx += I915_NUM_RINGS; | |
346 | ||
347 | return idx; | |
348 | } | |
349 | ||
8187a2b7 | 350 | static inline u32 |
a4872ba6 | 351 | intel_read_status_page(struct intel_engine_cs *ring, |
78501eac | 352 | int reg) |
8187a2b7 | 353 | { |
4225d0f2 DV |
354 | /* Ensure that the compiler doesn't optimize away the load. */ |
355 | barrier(); | |
356 | return ring->status_page.page_addr[reg]; | |
8187a2b7 ZN |
357 | } |
358 | ||
b70ec5bf | 359 | static inline void |
a4872ba6 | 360 | intel_write_status_page(struct intel_engine_cs *ring, |
b70ec5bf MK |
361 | int reg, u32 value) |
362 | { | |
363 | ring->status_page.page_addr[reg] = value; | |
364 | } | |
365 | ||
311bd68e CW |
366 | /** |
367 | * Reads a dword out of the status page, which is written to from the command | |
368 | * queue by automatic updates, MI_REPORT_HEAD, MI_STORE_DATA_INDEX, or | |
369 | * MI_STORE_DATA_IMM. | |
370 | * | |
371 | * The following dwords have a reserved meaning: | |
372 | * 0x00: ISR copy, updated when an ISR bit not set in the HWSTAM changes. | |
373 | * 0x04: ring 0 head pointer | |
374 | * 0x05: ring 1 head pointer (915-class) | |
375 | * 0x06: ring 2 head pointer (915-class) | |
376 | * 0x10-0x1b: Context status DWords (GM45) | |
377 | * 0x1f: Last written status offset. (GM45) | |
378 | * | |
379 | * The area from dword 0x20 to 0x3ff is available for driver usage. | |
380 | */ | |
311bd68e | 381 | #define I915_GEM_HWS_INDEX 0x20 |
9a289771 JB |
382 | #define I915_GEM_HWS_SCRATCH_INDEX 0x30 |
383 | #define I915_GEM_HWS_SCRATCH_ADDR (I915_GEM_HWS_SCRATCH_INDEX << MI_STORE_DWORD_INDEX_SHIFT) | |
311bd68e | 384 | |
84c2377f OM |
385 | void intel_destroy_ringbuffer_obj(struct intel_ringbuffer *ringbuf); |
386 | int intel_alloc_ringbuffer_obj(struct drm_device *dev, | |
387 | struct intel_ringbuffer *ringbuf); | |
388 | ||
a4872ba6 OM |
389 | void intel_stop_ring_buffer(struct intel_engine_cs *ring); |
390 | void intel_cleanup_ring_buffer(struct intel_engine_cs *ring); | |
96f298aa | 391 | |
a4872ba6 OM |
392 | int __must_check intel_ring_begin(struct intel_engine_cs *ring, int n); |
393 | int __must_check intel_ring_cacheline_align(struct intel_engine_cs *ring); | |
394 | static inline void intel_ring_emit(struct intel_engine_cs *ring, | |
78501eac | 395 | u32 data) |
e898cd22 | 396 | { |
93b0a4e0 OM |
397 | struct intel_ringbuffer *ringbuf = ring->buffer; |
398 | iowrite32(data, ringbuf->virtual_start + ringbuf->tail); | |
399 | ringbuf->tail += 4; | |
e898cd22 | 400 | } |
a4872ba6 | 401 | static inline void intel_ring_advance(struct intel_engine_cs *ring) |
09246732 | 402 | { |
93b0a4e0 OM |
403 | struct intel_ringbuffer *ringbuf = ring->buffer; |
404 | ringbuf->tail &= ringbuf->size - 1; | |
09246732 | 405 | } |
82e104cc OM |
406 | int __intel_ring_space(int head, int tail, int size); |
407 | int intel_ring_space(struct intel_ringbuffer *ringbuf); | |
408 | bool intel_ring_stopped(struct intel_engine_cs *ring); | |
a4872ba6 | 409 | void __intel_ring_advance(struct intel_engine_cs *ring); |
09246732 | 410 | |
a4872ba6 OM |
411 | int __must_check intel_ring_idle(struct intel_engine_cs *ring); |
412 | void intel_ring_init_seqno(struct intel_engine_cs *ring, u32 seqno); | |
413 | int intel_ring_flush_all_caches(struct intel_engine_cs *ring); | |
414 | int intel_ring_invalidate_all_caches(struct intel_engine_cs *ring); | |
8187a2b7 | 415 | |
9b1136d5 OM |
416 | void intel_fini_pipe_control(struct intel_engine_cs *ring); |
417 | int intel_init_pipe_control(struct intel_engine_cs *ring); | |
418 | ||
5c1143bb XH |
419 | int intel_init_render_ring_buffer(struct drm_device *dev); |
420 | int intel_init_bsd_ring_buffer(struct drm_device *dev); | |
845f74a7 | 421 | int intel_init_bsd2_ring_buffer(struct drm_device *dev); |
549f7365 | 422 | int intel_init_blt_ring_buffer(struct drm_device *dev); |
9a8a2213 | 423 | int intel_init_vebox_ring_buffer(struct drm_device *dev); |
8187a2b7 | 424 | |
a4872ba6 OM |
425 | u64 intel_ring_get_active_head(struct intel_engine_cs *ring); |
426 | void intel_ring_setup_status_page(struct intel_engine_cs *ring); | |
79f321b7 | 427 | |
771b9a53 MT |
428 | int init_workarounds_ring(struct intel_engine_cs *ring); |
429 | ||
1b5d063f | 430 | static inline u32 intel_ring_get_tail(struct intel_ringbuffer *ringbuf) |
a71d8d94 | 431 | { |
1b5d063f | 432 | return ringbuf->tail; |
a71d8d94 CW |
433 | } |
434 | ||
a4872ba6 | 435 | static inline u32 intel_ring_get_seqno(struct intel_engine_cs *ring) |
9d773091 | 436 | { |
1823521d CW |
437 | BUG_ON(ring->outstanding_lazy_seqno == 0); |
438 | return ring->outstanding_lazy_seqno; | |
9d773091 CW |
439 | } |
440 | ||
a4872ba6 | 441 | static inline void i915_trace_irq_get(struct intel_engine_cs *ring, u32 seqno) |
db53a302 CW |
442 | { |
443 | if (ring->trace_irq_seqno == 0 && ring->irq_get(ring)) | |
444 | ring->trace_irq_seqno = seqno; | |
445 | } | |
446 | ||
e8616b6c CW |
447 | /* DRI warts */ |
448 | int intel_render_ring_init_dri(struct drm_device *dev, u64 start, u32 size); | |
449 | ||
8187a2b7 | 450 | #endif /* _INTEL_RINGBUFFER_H_ */ |