2 * Copyright (C) 2013 Red Hat
3 * Author: Rob Clark <robdclark@gmail.com>
5 * Copyright (c) 2014 The Linux Foundation. All rights reserved.
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * You should have received a copy of the GNU General Public License along with
17 * this program. If not, see <http://www.gnu.org/licenses/>.
20 #include "adreno_gpu.h"
24 #define RB_SIZE SZ_32K
27 int adreno_get_param(struct msm_gpu
*gpu
, uint32_t param
, uint64_t *value
)
29 struct adreno_gpu
*adreno_gpu
= to_adreno_gpu(gpu
);
32 case MSM_PARAM_GPU_ID
:
33 *value
= adreno_gpu
->info
->revn
;
35 case MSM_PARAM_GMEM_SIZE
:
36 *value
= adreno_gpu
->gmem
;
38 case MSM_PARAM_CHIP_ID
:
39 *value
= adreno_gpu
->rev
.patchid
|
40 (adreno_gpu
->rev
.minor
<< 8) |
41 (adreno_gpu
->rev
.major
<< 16) |
42 (adreno_gpu
->rev
.core
<< 24);
44 case MSM_PARAM_MAX_FREQ
:
45 *value
= adreno_gpu
->base
.fast_rate
;
47 case MSM_PARAM_TIMESTAMP
:
48 if (adreno_gpu
->funcs
->get_timestamp
)
49 return adreno_gpu
->funcs
->get_timestamp(gpu
, value
);
52 DBG("%s: invalid param: %u", gpu
->name
, param
);
57 #define rbmemptr(adreno_gpu, member) \
58 ((adreno_gpu)->memptrs_iova + offsetof(struct adreno_rbmemptrs, member))
60 int adreno_hw_init(struct msm_gpu
*gpu
)
62 struct adreno_gpu
*adreno_gpu
= to_adreno_gpu(gpu
);
67 ret
= msm_gem_get_iova(gpu
->rb
->bo
, gpu
->id
, &gpu
->rb_iova
);
70 dev_err(gpu
->dev
->dev
, "could not map ringbuffer: %d\n", ret
);
74 /* Setup REG_CP_RB_CNTL: */
75 adreno_gpu_write(adreno_gpu
, REG_ADRENO_CP_RB_CNTL
,
76 /* size is log2(quad-words): */
77 AXXX_CP_RB_CNTL_BUFSZ(ilog2(gpu
->rb
->size
/ 8)) |
78 AXXX_CP_RB_CNTL_BLKSZ(ilog2(RB_BLKSIZE
/ 8)) |
79 (adreno_is_a430(adreno_gpu
) ? AXXX_CP_RB_CNTL_NO_UPDATE
: 0));
81 /* Setup ringbuffer address: */
82 adreno_gpu_write(adreno_gpu
, REG_ADRENO_CP_RB_BASE
, gpu
->rb_iova
);
84 if (!adreno_is_a430(adreno_gpu
))
85 adreno_gpu_write(adreno_gpu
, REG_ADRENO_CP_RB_RPTR_ADDR
,
86 rbmemptr(adreno_gpu
, rptr
));
91 static uint32_t get_wptr(struct msm_ringbuffer
*ring
)
93 return ring
->cur
- ring
->start
;
96 /* Use this helper to read rptr, since a430 doesn't update rptr in memory */
97 static uint32_t get_rptr(struct adreno_gpu
*adreno_gpu
)
99 if (adreno_is_a430(adreno_gpu
))
100 return adreno_gpu
->memptrs
->rptr
= adreno_gpu_read(
101 adreno_gpu
, REG_ADRENO_CP_RB_RPTR
);
103 return adreno_gpu
->memptrs
->rptr
;
106 uint32_t adreno_last_fence(struct msm_gpu
*gpu
)
108 struct adreno_gpu
*adreno_gpu
= to_adreno_gpu(gpu
);
109 return adreno_gpu
->memptrs
->fence
;
112 void adreno_recover(struct msm_gpu
*gpu
)
114 struct adreno_gpu
*adreno_gpu
= to_adreno_gpu(gpu
);
115 struct drm_device
*dev
= gpu
->dev
;
118 gpu
->funcs
->pm_suspend(gpu
);
120 /* reset ringbuffer: */
121 gpu
->rb
->cur
= gpu
->rb
->start
;
123 /* reset completed fence seqno: */
124 adreno_gpu
->memptrs
->fence
= gpu
->fctx
->completed_fence
;
125 adreno_gpu
->memptrs
->rptr
= 0;
126 adreno_gpu
->memptrs
->wptr
= 0;
128 gpu
->funcs
->pm_resume(gpu
);
129 ret
= gpu
->funcs
->hw_init(gpu
);
131 dev_err(dev
->dev
, "gpu hw init failed: %d\n", ret
);
136 void adreno_submit(struct msm_gpu
*gpu
, struct msm_gem_submit
*submit
,
137 struct msm_file_private
*ctx
)
139 struct adreno_gpu
*adreno_gpu
= to_adreno_gpu(gpu
);
140 struct msm_drm_private
*priv
= gpu
->dev
->dev_private
;
141 struct msm_ringbuffer
*ring
= gpu
->rb
;
144 for (i
= 0; i
< submit
->nr_cmds
; i
++) {
145 switch (submit
->cmd
[i
].type
) {
146 case MSM_SUBMIT_CMD_IB_TARGET_BUF
:
147 /* ignore IB-targets */
149 case MSM_SUBMIT_CMD_CTX_RESTORE_BUF
:
150 /* ignore if there has not been a ctx switch: */
151 if (priv
->lastctx
== ctx
)
153 case MSM_SUBMIT_CMD_BUF
:
154 OUT_PKT3(ring
, adreno_is_a430(adreno_gpu
) ?
155 CP_INDIRECT_BUFFER_PFE
: CP_INDIRECT_BUFFER_PFD
, 2);
156 OUT_RING(ring
, submit
->cmd
[i
].iova
);
157 OUT_RING(ring
, submit
->cmd
[i
].size
);
163 /* on a320, at least, we seem to need to pad things out to an
164 * even number of qwords to avoid issue w/ CP hanging on wrap-
170 OUT_PKT0(ring
, REG_AXXX_CP_SCRATCH_REG2
, 1);
171 OUT_RING(ring
, submit
->fence
->seqno
);
173 if (adreno_is_a3xx(adreno_gpu
) || adreno_is_a4xx(adreno_gpu
)) {
174 /* Flush HLSQ lazy updates to make sure there is nothing
175 * pending for indirect loads after the timestamp has
178 OUT_PKT3(ring
, CP_EVENT_WRITE
, 1);
179 OUT_RING(ring
, HLSQ_FLUSH
);
181 OUT_PKT3(ring
, CP_WAIT_FOR_IDLE
, 1);
182 OUT_RING(ring
, 0x00000000);
185 OUT_PKT3(ring
, CP_EVENT_WRITE
, 3);
186 OUT_RING(ring
, CACHE_FLUSH_TS
);
187 OUT_RING(ring
, rbmemptr(adreno_gpu
, fence
));
188 OUT_RING(ring
, submit
->fence
->seqno
);
190 /* we could maybe be clever and only CP_COND_EXEC the interrupt: */
191 OUT_PKT3(ring
, CP_INTERRUPT
, 1);
192 OUT_RING(ring
, 0x80000000);
194 /* Workaround for missing irq issue on 8x16/a306. Unsure if the
195 * root cause is a platform issue or some a306 quirk, but this
196 * keeps things humming along:
198 if (adreno_is_a306(adreno_gpu
)) {
199 OUT_PKT3(ring
, CP_WAIT_FOR_IDLE
, 1);
200 OUT_RING(ring
, 0x00000000);
201 OUT_PKT3(ring
, CP_INTERRUPT
, 1);
202 OUT_RING(ring
, 0x80000000);
206 if (adreno_is_a3xx(adreno_gpu
)) {
207 /* Dummy set-constant to trigger context rollover */
208 OUT_PKT3(ring
, CP_SET_CONSTANT
, 2);
209 OUT_RING(ring
, CP_REG(REG_A3XX_HLSQ_CL_KERNEL_GROUP_X_REG
));
210 OUT_RING(ring
, 0x00000000);
214 gpu
->funcs
->flush(gpu
);
217 void adreno_flush(struct msm_gpu
*gpu
)
219 struct adreno_gpu
*adreno_gpu
= to_adreno_gpu(gpu
);
220 uint32_t wptr
= get_wptr(gpu
->rb
);
222 /* ensure writes to ringbuffer have hit system memory: */
225 adreno_gpu_write(adreno_gpu
, REG_ADRENO_CP_RB_WPTR
, wptr
);
228 void adreno_idle(struct msm_gpu
*gpu
)
230 struct adreno_gpu
*adreno_gpu
= to_adreno_gpu(gpu
);
231 uint32_t wptr
= get_wptr(gpu
->rb
);
234 /* wait for CP to drain ringbuffer: */
235 ret
= spin_until(get_rptr(adreno_gpu
) == wptr
);
238 DRM_ERROR("%s: timeout waiting to drain ringbuffer!\n", gpu
->name
);
240 /* TODO maybe we need to reset GPU here to recover from hang? */
243 #ifdef CONFIG_DEBUG_FS
244 void adreno_show(struct msm_gpu
*gpu
, struct seq_file
*m
)
246 struct adreno_gpu
*adreno_gpu
= to_adreno_gpu(gpu
);
249 seq_printf(m
, "revision: %d (%d.%d.%d.%d)\n",
250 adreno_gpu
->info
->revn
, adreno_gpu
->rev
.core
,
251 adreno_gpu
->rev
.major
, adreno_gpu
->rev
.minor
,
252 adreno_gpu
->rev
.patchid
);
254 seq_printf(m
, "fence: %d/%d\n", adreno_gpu
->memptrs
->fence
,
255 gpu
->fctx
->last_fence
);
256 seq_printf(m
, "rptr: %d\n", get_rptr(adreno_gpu
));
257 seq_printf(m
, "wptr: %d\n", adreno_gpu
->memptrs
->wptr
);
258 seq_printf(m
, "rb wptr: %d\n", get_wptr(gpu
->rb
));
260 gpu
->funcs
->pm_resume(gpu
);
262 /* dump these out in a form that can be parsed by demsm: */
263 seq_printf(m
, "IO:region %s 00000000 00020000\n", gpu
->name
);
264 for (i
= 0; adreno_gpu
->registers
[i
] != ~0; i
+= 2) {
265 uint32_t start
= adreno_gpu
->registers
[i
];
266 uint32_t end
= adreno_gpu
->registers
[i
+1];
269 for (addr
= start
; addr
<= end
; addr
++) {
270 uint32_t val
= gpu_read(gpu
, addr
);
271 seq_printf(m
, "IO:R %08x %08x\n", addr
<<2, val
);
275 gpu
->funcs
->pm_suspend(gpu
);
279 /* Dump common gpu status and scratch registers on any hang, to make
280 * the hangcheck logs more useful. The scratch registers seem always
281 * safe to read when GPU has hung (unlike some other regs, depending
282 * on how the GPU hung), and they are useful to match up to cmdstream
283 * dumps when debugging hangs:
285 void adreno_dump_info(struct msm_gpu
*gpu
)
287 struct adreno_gpu
*adreno_gpu
= to_adreno_gpu(gpu
);
290 printk("revision: %d (%d.%d.%d.%d)\n",
291 adreno_gpu
->info
->revn
, adreno_gpu
->rev
.core
,
292 adreno_gpu
->rev
.major
, adreno_gpu
->rev
.minor
,
293 adreno_gpu
->rev
.patchid
);
295 printk("fence: %d/%d\n", adreno_gpu
->memptrs
->fence
,
296 gpu
->fctx
->last_fence
);
297 printk("rptr: %d\n", get_rptr(adreno_gpu
));
298 printk("wptr: %d\n", adreno_gpu
->memptrs
->wptr
);
299 printk("rb wptr: %d\n", get_wptr(gpu
->rb
));
301 for (i
= 0; i
< 8; i
++) {
302 printk("CP_SCRATCH_REG%d: %u\n", i
,
303 gpu_read(gpu
, REG_AXXX_CP_SCRATCH_REG0
+ i
));
307 /* would be nice to not have to duplicate the _show() stuff with printk(): */
308 void adreno_dump(struct msm_gpu
*gpu
)
310 struct adreno_gpu
*adreno_gpu
= to_adreno_gpu(gpu
);
313 /* dump these out in a form that can be parsed by demsm: */
314 printk("IO:region %s 00000000 00020000\n", gpu
->name
);
315 for (i
= 0; adreno_gpu
->registers
[i
] != ~0; i
+= 2) {
316 uint32_t start
= adreno_gpu
->registers
[i
];
317 uint32_t end
= adreno_gpu
->registers
[i
+1];
320 for (addr
= start
; addr
<= end
; addr
++) {
321 uint32_t val
= gpu_read(gpu
, addr
);
322 printk("IO:R %08x %08x\n", addr
<<2, val
);
327 static uint32_t ring_freewords(struct msm_gpu
*gpu
)
329 struct adreno_gpu
*adreno_gpu
= to_adreno_gpu(gpu
);
330 uint32_t size
= gpu
->rb
->size
/ 4;
331 uint32_t wptr
= get_wptr(gpu
->rb
);
332 uint32_t rptr
= get_rptr(adreno_gpu
);
333 return (rptr
+ (size
- 1) - wptr
) % size
;
336 void adreno_wait_ring(struct msm_gpu
*gpu
, uint32_t ndwords
)
338 if (spin_until(ring_freewords(gpu
) >= ndwords
))
339 DRM_ERROR("%s: timeout waiting for ringbuffer space\n", gpu
->name
);
342 static const char *iommu_ports
[] = {
343 "gfx3d_user", "gfx3d_priv",
344 "gfx3d1_user", "gfx3d1_priv",
347 int adreno_gpu_init(struct drm_device
*drm
, struct platform_device
*pdev
,
348 struct adreno_gpu
*adreno_gpu
, const struct adreno_gpu_funcs
*funcs
)
350 struct adreno_platform_config
*config
= pdev
->dev
.platform_data
;
351 struct msm_gpu
*gpu
= &adreno_gpu
->base
;
355 adreno_gpu
->funcs
= funcs
;
356 adreno_gpu
->info
= adreno_info(config
->rev
);
357 adreno_gpu
->gmem
= adreno_gpu
->info
->gmem
;
358 adreno_gpu
->revn
= adreno_gpu
->info
->revn
;
359 adreno_gpu
->rev
= config
->rev
;
361 gpu
->fast_rate
= config
->fast_rate
;
362 gpu
->slow_rate
= config
->slow_rate
;
363 gpu
->bus_freq
= config
->bus_freq
;
364 #ifdef DOWNSTREAM_CONFIG_MSM_BUS_SCALING
365 gpu
->bus_scale_table
= config
->bus_scale_table
;
368 DBG("fast_rate=%u, slow_rate=%u, bus_freq=%u",
369 gpu
->fast_rate
, gpu
->slow_rate
, gpu
->bus_freq
);
371 ret
= msm_gpu_init(drm
, pdev
, &adreno_gpu
->base
, &funcs
->base
,
372 adreno_gpu
->info
->name
, "kgsl_3d0_reg_memory", "kgsl_3d0_irq",
377 ret
= request_firmware(&adreno_gpu
->pm4
, adreno_gpu
->info
->pm4fw
, drm
->dev
);
379 dev_err(drm
->dev
, "failed to load %s PM4 firmware: %d\n",
380 adreno_gpu
->info
->pm4fw
, ret
);
384 ret
= request_firmware(&adreno_gpu
->pfp
, adreno_gpu
->info
->pfpfw
, drm
->dev
);
386 dev_err(drm
->dev
, "failed to load %s PFP firmware: %d\n",
387 adreno_gpu
->info
->pfpfw
, ret
);
393 ret
= mmu
->funcs
->attach(mmu
, iommu_ports
,
394 ARRAY_SIZE(iommu_ports
));
399 mutex_lock(&drm
->struct_mutex
);
400 adreno_gpu
->memptrs_bo
= msm_gem_new(drm
, sizeof(*adreno_gpu
->memptrs
),
402 mutex_unlock(&drm
->struct_mutex
);
403 if (IS_ERR(adreno_gpu
->memptrs_bo
)) {
404 ret
= PTR_ERR(adreno_gpu
->memptrs_bo
);
405 adreno_gpu
->memptrs_bo
= NULL
;
406 dev_err(drm
->dev
, "could not allocate memptrs: %d\n", ret
);
410 adreno_gpu
->memptrs
= msm_gem_vaddr(adreno_gpu
->memptrs_bo
);
411 if (!adreno_gpu
->memptrs
) {
412 dev_err(drm
->dev
, "could not vmap memptrs\n");
416 ret
= msm_gem_get_iova(adreno_gpu
->memptrs_bo
, gpu
->id
,
417 &adreno_gpu
->memptrs_iova
);
419 dev_err(drm
->dev
, "could not map memptrs: %d\n", ret
);
426 void adreno_gpu_cleanup(struct adreno_gpu
*gpu
)
428 if (gpu
->memptrs_bo
) {
429 if (gpu
->memptrs_iova
)
430 msm_gem_put_iova(gpu
->memptrs_bo
, gpu
->base
.id
);
431 drm_gem_object_unreference_unlocked(gpu
->memptrs_bo
);
433 release_firmware(gpu
->pm4
);
434 release_firmware(gpu
->pfp
);
435 msm_gpu_cleanup(&gpu
->base
);