2 * Copyright (C) 2014 Etnaviv Project
3 * Author: Christian Gmeiner <christian.gmeiner@gmail.com>
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
18 #include "etnaviv_gpu.h"
19 #include "etnaviv_gem.h"
20 #include "etnaviv_mmu.h"
22 #include "common.xml.h"
23 #include "state.xml.h"
24 #include "state_3d.xml.h"
25 #include "cmdstream.xml.h"
28 * Command Buffer helper:
32 static inline void OUT(struct etnaviv_cmdbuf
*buffer
, u32 data
)
34 u32
*vaddr
= (u32
*)buffer
->vaddr
;
36 BUG_ON(buffer
->user_size
>= buffer
->size
);
38 vaddr
[buffer
->user_size
/ 4] = data
;
39 buffer
->user_size
+= 4;
42 static inline void CMD_LOAD_STATE(struct etnaviv_cmdbuf
*buffer
,
45 u32 index
= reg
>> VIV_FE_LOAD_STATE_HEADER_OFFSET__SHR
;
47 buffer
->user_size
= ALIGN(buffer
->user_size
, 8);
49 /* write a register via cmd stream */
50 OUT(buffer
, VIV_FE_LOAD_STATE_HEADER_OP_LOAD_STATE
|
51 VIV_FE_LOAD_STATE_HEADER_COUNT(1) |
52 VIV_FE_LOAD_STATE_HEADER_OFFSET(index
));
56 static inline void CMD_END(struct etnaviv_cmdbuf
*buffer
)
58 buffer
->user_size
= ALIGN(buffer
->user_size
, 8);
60 OUT(buffer
, VIV_FE_END_HEADER_OP_END
);
63 static inline void CMD_WAIT(struct etnaviv_cmdbuf
*buffer
)
65 buffer
->user_size
= ALIGN(buffer
->user_size
, 8);
67 OUT(buffer
, VIV_FE_WAIT_HEADER_OP_WAIT
| 200);
70 static inline void CMD_LINK(struct etnaviv_cmdbuf
*buffer
,
71 u16 prefetch
, u32 address
)
73 buffer
->user_size
= ALIGN(buffer
->user_size
, 8);
75 OUT(buffer
, VIV_FE_LINK_HEADER_OP_LINK
|
76 VIV_FE_LINK_HEADER_PREFETCH(prefetch
));
80 static inline void CMD_STALL(struct etnaviv_cmdbuf
*buffer
,
83 buffer
->user_size
= ALIGN(buffer
->user_size
, 8);
85 OUT(buffer
, VIV_FE_STALL_HEADER_OP_STALL
);
86 OUT(buffer
, VIV_FE_STALL_TOKEN_FROM(from
) | VIV_FE_STALL_TOKEN_TO(to
));
89 static inline void CMD_SEM(struct etnaviv_cmdbuf
*buffer
, u32 from
, u32 to
)
91 CMD_LOAD_STATE(buffer
, VIVS_GL_SEMAPHORE_TOKEN
,
92 VIVS_GL_SEMAPHORE_TOKEN_FROM(from
) |
93 VIVS_GL_SEMAPHORE_TOKEN_TO(to
));
96 static void etnaviv_cmd_select_pipe(struct etnaviv_gpu
*gpu
,
97 struct etnaviv_cmdbuf
*buffer
, u8 pipe
)
102 * This assumes that if we're switching to 2D, we're switching
103 * away from 3D, and vice versa. Hence, if we're switching to
104 * the 2D core, we need to flush the 3D depth and color caches,
105 * otherwise we need to flush the 2D pixel engine cache.
107 if (gpu
->exec_state
== ETNA_PIPE_2D
)
108 flush
= VIVS_GL_FLUSH_CACHE_PE2D
;
109 else if (gpu
->exec_state
== ETNA_PIPE_3D
)
110 flush
= VIVS_GL_FLUSH_CACHE_DEPTH
| VIVS_GL_FLUSH_CACHE_COLOR
;
112 CMD_LOAD_STATE(buffer
, VIVS_GL_FLUSH_CACHE
, flush
);
113 CMD_SEM(buffer
, SYNC_RECIPIENT_FE
, SYNC_RECIPIENT_PE
);
114 CMD_STALL(buffer
, SYNC_RECIPIENT_FE
, SYNC_RECIPIENT_PE
);
116 CMD_LOAD_STATE(buffer
, VIVS_GL_PIPE_SELECT
,
117 VIVS_GL_PIPE_SELECT_PIPE(pipe
));
120 static u32
gpu_va(struct etnaviv_gpu
*gpu
, struct etnaviv_cmdbuf
*buf
)
122 return buf
->paddr
- gpu
->memory_base
;
125 static void etnaviv_buffer_dump(struct etnaviv_gpu
*gpu
,
126 struct etnaviv_cmdbuf
*buf
, u32 off
, u32 len
)
128 u32 size
= buf
->size
;
129 u32
*ptr
= buf
->vaddr
+ off
;
131 dev_info(gpu
->dev
, "virt %p phys 0x%08x free 0x%08x\n",
132 ptr
, gpu_va(gpu
, buf
) + off
, size
- len
* 4 - off
);
134 print_hex_dump(KERN_INFO
, "cmd ", DUMP_PREFIX_OFFSET
, 16, 4,
139 * Safely replace the WAIT of a waitlink with a new command and argument.
140 * The GPU may be executing this WAIT while we're modifying it, so we have
141 * to write it in a specific order to avoid the GPU branching to somewhere
142 * else. 'wl_offset' is the offset to the first byte of the WAIT command.
144 static void etnaviv_buffer_replace_wait(struct etnaviv_cmdbuf
*buffer
,
145 unsigned int wl_offset
, u32 cmd
, u32 arg
)
147 u32
*lw
= buffer
->vaddr
+ wl_offset
;
156 * Ensure that there is space in the command buffer to contiguously write
157 * 'cmd_dwords' 64-bit words into the buffer, wrapping if necessary.
159 static u32
etnaviv_buffer_reserve(struct etnaviv_gpu
*gpu
,
160 struct etnaviv_cmdbuf
*buffer
, unsigned int cmd_dwords
)
162 if (buffer
->user_size
+ cmd_dwords
* sizeof(u64
) > buffer
->size
)
163 buffer
->user_size
= 0;
165 return gpu_va(gpu
, buffer
) + buffer
->user_size
;
168 u16
etnaviv_buffer_init(struct etnaviv_gpu
*gpu
)
170 struct etnaviv_cmdbuf
*buffer
= gpu
->buffer
;
172 /* initialize buffer */
173 buffer
->user_size
= 0;
176 CMD_LINK(buffer
, 2, gpu_va(gpu
, buffer
) + buffer
->user_size
- 4);
178 return buffer
->user_size
/ 8;
181 void etnaviv_buffer_end(struct etnaviv_gpu
*gpu
)
183 struct etnaviv_cmdbuf
*buffer
= gpu
->buffer
;
184 unsigned int waitlink_offset
= buffer
->user_size
- 16;
185 u32 link_target
, flush
= 0;
187 if (gpu
->exec_state
== ETNA_PIPE_2D
)
188 flush
= VIVS_GL_FLUSH_CACHE_PE2D
;
189 else if (gpu
->exec_state
== ETNA_PIPE_3D
)
190 flush
= VIVS_GL_FLUSH_CACHE_DEPTH
|
191 VIVS_GL_FLUSH_CACHE_COLOR
|
192 VIVS_GL_FLUSH_CACHE_TEXTURE
|
193 VIVS_GL_FLUSH_CACHE_TEXTUREVS
|
194 VIVS_GL_FLUSH_CACHE_SHADER_L2
;
197 unsigned int dwords
= 7;
199 link_target
= etnaviv_buffer_reserve(gpu
, buffer
, dwords
);
201 CMD_SEM(buffer
, SYNC_RECIPIENT_FE
, SYNC_RECIPIENT_PE
);
202 CMD_STALL(buffer
, SYNC_RECIPIENT_FE
, SYNC_RECIPIENT_PE
);
203 CMD_LOAD_STATE(buffer
, VIVS_GL_FLUSH_CACHE
, flush
);
204 if (gpu
->exec_state
== ETNA_PIPE_3D
)
205 CMD_LOAD_STATE(buffer
, VIVS_TS_FLUSH_CACHE
,
206 VIVS_TS_FLUSH_CACHE_FLUSH
);
207 CMD_SEM(buffer
, SYNC_RECIPIENT_FE
, SYNC_RECIPIENT_PE
);
208 CMD_STALL(buffer
, SYNC_RECIPIENT_FE
, SYNC_RECIPIENT_PE
);
211 etnaviv_buffer_replace_wait(buffer
, waitlink_offset
,
212 VIV_FE_LINK_HEADER_OP_LINK
|
213 VIV_FE_LINK_HEADER_PREFETCH(dwords
),
216 /* Replace the last link-wait with an "END" command */
217 etnaviv_buffer_replace_wait(buffer
, waitlink_offset
,
218 VIV_FE_END_HEADER_OP_END
, 0);
222 /* Append a command buffer to the ring buffer. */
223 void etnaviv_buffer_queue(struct etnaviv_gpu
*gpu
, unsigned int event
,
224 struct etnaviv_cmdbuf
*cmdbuf
)
226 struct etnaviv_cmdbuf
*buffer
= gpu
->buffer
;
227 unsigned int waitlink_offset
= buffer
->user_size
- 16;
228 u32 return_target
, return_dwords
;
229 u32 link_target
, link_dwords
;
231 if (drm_debug
& DRM_UT_DRIVER
)
232 etnaviv_buffer_dump(gpu
, buffer
, 0, 0x50);
234 link_target
= gpu_va(gpu
, cmdbuf
);
235 link_dwords
= cmdbuf
->size
/ 8;
238 * If we need maintanence prior to submitting this buffer, we will
239 * need to append a mmu flush load state, followed by a new
240 * link to this buffer - a total of four additional words.
242 if (gpu
->mmu
->need_flush
|| gpu
->switch_context
) {
243 u32 target
, extra_dwords
;
249 if (gpu
->mmu
->need_flush
)
252 /* pipe switch commands */
253 if (gpu
->switch_context
)
256 target
= etnaviv_buffer_reserve(gpu
, buffer
, extra_dwords
);
258 if (gpu
->mmu
->need_flush
) {
259 /* Add the MMU flush */
260 CMD_LOAD_STATE(buffer
, VIVS_GL_FLUSH_MMU
,
261 VIVS_GL_FLUSH_MMU_FLUSH_FEMMU
|
262 VIVS_GL_FLUSH_MMU_FLUSH_UNK1
|
263 VIVS_GL_FLUSH_MMU_FLUSH_UNK2
|
264 VIVS_GL_FLUSH_MMU_FLUSH_PEMMU
|
265 VIVS_GL_FLUSH_MMU_FLUSH_UNK4
);
267 gpu
->mmu
->need_flush
= false;
270 if (gpu
->switch_context
) {
271 etnaviv_cmd_select_pipe(gpu
, buffer
, cmdbuf
->exec_state
);
272 gpu
->exec_state
= cmdbuf
->exec_state
;
273 gpu
->switch_context
= false;
276 /* And the link to the submitted buffer */
277 CMD_LINK(buffer
, link_dwords
, link_target
);
279 /* Update the link target to point to above instructions */
280 link_target
= target
;
281 link_dwords
= extra_dwords
;
285 * Append a LINK to the submitted command buffer to return to
286 * the ring buffer. return_target is the ring target address.
287 * We need three dwords: event, wait, link.
290 return_target
= etnaviv_buffer_reserve(gpu
, buffer
, return_dwords
);
291 CMD_LINK(cmdbuf
, return_dwords
, return_target
);
294 * Append event, wait and link pointing back to the wait
295 * command to the ring buffer.
297 CMD_LOAD_STATE(buffer
, VIVS_GL_EVENT
, VIVS_GL_EVENT_EVENT_ID(event
) |
298 VIVS_GL_EVENT_FROM_PE
);
300 CMD_LINK(buffer
, 2, return_target
+ 8);
302 if (drm_debug
& DRM_UT_DRIVER
)
303 pr_info("stream link to 0x%08x @ 0x%08x %p\n",
304 return_target
, gpu_va(gpu
, cmdbuf
), cmdbuf
->vaddr
);
306 if (drm_debug
& DRM_UT_DRIVER
) {
307 print_hex_dump(KERN_INFO
, "cmd ", DUMP_PREFIX_OFFSET
, 16, 4,
308 cmdbuf
->vaddr
, cmdbuf
->size
, 0);
310 pr_info("link op: %p\n", buffer
->vaddr
+ waitlink_offset
);
311 pr_info("addr: 0x%08x\n", link_target
);
312 pr_info("back: 0x%08x\n", return_target
);
313 pr_info("event: %d\n", event
);
317 * Kick off the submitted command by replacing the previous
318 * WAIT with a link to the address in the ring buffer.
320 etnaviv_buffer_replace_wait(buffer
, waitlink_offset
,
321 VIV_FE_LINK_HEADER_OP_LINK
|
322 VIV_FE_LINK_HEADER_PREFETCH(link_dwords
),
325 if (drm_debug
& DRM_UT_DRIVER
)
326 etnaviv_buffer_dump(gpu
, buffer
, 0, 0x50);