1 /**************************************************************************
3 * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
30 * Utility/wrappers for communicating with the SPUs.
37 #include "pipe/p_format.h"
38 #include "pipe/p_state.h"
39 #include "util/u_memory.h"
40 #include "cell/common.h"
45 /opt/ibm/cell-sdk/prototype/src/include/ppu/cbe_mfc.h
50 * Cell/SPU info that's not per-context.
52 struct cell_global_info cell_global
;
56 * Scan /proc/cpuinfo to determine the timebase for the system.
57 * This is used by the SPUs to convert 'decrementer' ticks to seconds.
58 * There may be a better way to get this value...
63 FILE *f
= fopen("/proc/cpuinfo", "r");
69 fgets(line
, sizeof(line
), f
);
70 if (strncmp(line
, "timebase", 8) == 0) {
71 char *colon
= strchr(line
, ':');
73 timebase
= atoi(colon
+ 2);
85 * Write a 1-word message to the given SPE mailbox.
88 send_mbox_message(spe_context_ptr_t ctx
, unsigned int msg
)
90 spe_in_mbox_write(ctx
, &msg
, 1, SPE_MBOX_ALL_BLOCKING
);
95 * Wait for a 1-word message to arrive in given mailbox.
98 wait_mbox_message(spe_context_ptr_t ctx
)
102 int count
= spe_out_mbox_read(ctx
, &data
, 1);
116 * Called by pthread_create() to spawn an SPU thread.
119 cell_thread_function(void *arg
)
121 struct cell_init_info
*init
= (struct cell_init_info
*) arg
;
122 unsigned entry
= SPE_DEFAULT_ENTRY
;
124 ASSERT_ALIGN16(init
);
126 if (spe_context_run(cell_global
.spe_contexts
[init
->id
], &entry
, 0,
127 init
, NULL
, NULL
) < 0) {
128 fprintf(stderr
, "spe_context_run() failed\n");
137 * Create the SPU threads. This is done once during driver initialization.
138 * This involves setting the the "init" message which is sent to each SPU.
139 * The init message specifies an SPU id, total number of SPUs, location
140 * and number of batch buffers, etc.
143 cell_start_spus(struct cell_context
*cell
)
145 static boolean one_time_init
= FALSE
;
147 uint timebase
= get_timebase();
150 fprintf(stderr
, "PPU: Multiple rendering contexts not yet supported "
155 one_time_init
= TRUE
;
157 assert(cell
->num_spus
<= CELL_MAX_SPUS
);
159 ASSERT_ALIGN16(&cell_global
.inits
[0]);
160 ASSERT_ALIGN16(&cell_global
.inits
[1]);
163 * Initialize the global 'inits' structure for each SPU.
164 * A pointer to the init struct will be passed to each SPU.
165 * The SPUs will then each grab their init info with mfc_get().
167 for (i
= 0; i
< cell
->num_spus
; i
++) {
168 cell_global
.inits
[i
].id
= i
;
169 cell_global
.inits
[i
].num_spus
= cell
->num_spus
;
170 cell_global
.inits
[i
].debug_flags
= cell
->debug_flags
;
171 cell_global
.inits
[i
].inv_timebase
= 1000.0f
/ timebase
;
173 for (j
= 0; j
< CELL_NUM_BUFFERS
; j
++) {
174 cell_global
.inits
[i
].buffers
[j
] = cell
->buffer
[j
];
176 cell_global
.inits
[i
].buffer_status
= &cell
->buffer_status
[0][0][0];
178 cell_global
.inits
[i
].spu_functions
= &cell
->spu_functions
;
180 cell_global
.spe_contexts
[i
] = spe_context_create(0, NULL
);
181 if (!cell_global
.spe_contexts
[i
]) {
182 fprintf(stderr
, "spe_context_create() failed\n");
186 if (spe_program_load(cell_global
.spe_contexts
[i
], &g3d_spu
)) {
187 fprintf(stderr
, "spe_program_load() failed\n");
191 pthread_create(&cell_global
.spe_threads
[i
], /* returned thread handle */
192 NULL
, /* pthread attribs */
193 &cell_thread_function
, /* start routine */
194 &cell_global
.inits
[i
]); /* thread argument */
200 * Tell all the SPUs to stop/exit.
201 * This is done when the driver's exiting / cleaning up.
204 cell_spu_exit(struct cell_context
*cell
)
208 for (i
= 0; i
< cell
->num_spus
; i
++) {
209 send_mbox_message(cell_global
.spe_contexts
[i
], CELL_CMD_EXIT
);
212 /* wait for threads to exit */
213 for (i
= 0; i
< cell
->num_spus
; i
++) {
215 pthread_join(cell_global
.spe_threads
[i
], &value
);
216 cell_global
.spe_threads
[i
] = 0;
217 cell_global
.spe_contexts
[i
] = 0;