2 * Copyright (C) 2013 Red Hat
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/>.
21 #include <linux/clk.h>
22 #include <linux/interconnect.h>
23 #include <linux/regulator/consumer.h>
26 #include "msm_fence.h"
27 #include "msm_ringbuffer.h"
29 struct msm_gem_submit;
30 struct msm_gpu_perfcntr;
33 struct msm_gpu_config {
37 unsigned int nr_rings;
40 /* So far, with hardware that I've seen to date, we can have:
41 * + zero, one, or two z180 2d cores
42 * + a3xx or a2xx 3d core, which share a common CP (the firmware
43 * for the CP seems to implement some different PM4 packet types
44 * but the basics of cmdstream submission are the same)
46 * Which means that the eventual complete "class" hierarchy, once
47 * support for all past and present hw is in place, becomes:
54 struct msm_gpu_funcs {
55 int (*get_param)(struct msm_gpu *gpu, uint32_t param, uint64_t *value);
56 int (*hw_init)(struct msm_gpu *gpu);
57 int (*pm_suspend)(struct msm_gpu *gpu);
58 int (*pm_resume)(struct msm_gpu *gpu);
59 void (*submit)(struct msm_gpu *gpu, struct msm_gem_submit *submit,
60 struct msm_file_private *ctx);
61 void (*flush)(struct msm_gpu *gpu, struct msm_ringbuffer *ring);
62 irqreturn_t (*irq)(struct msm_gpu *irq);
63 struct msm_ringbuffer *(*active_ring)(struct msm_gpu *gpu);
64 void (*recover)(struct msm_gpu *gpu);
65 void (*destroy)(struct msm_gpu *gpu);
66 #if defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP)
67 /* show GPU status in debugfs: */
68 void (*show)(struct msm_gpu *gpu, struct msm_gpu_state *state,
69 struct drm_printer *p);
70 /* for generation specific debugfs: */
71 int (*debugfs_init)(struct msm_gpu *gpu, struct drm_minor *minor);
73 unsigned long (*gpu_busy)(struct msm_gpu *gpu);
74 struct msm_gpu_state *(*gpu_state_get)(struct msm_gpu *gpu);
75 int (*gpu_state_put)(struct msm_gpu_state *state);
76 unsigned long (*gpu_get_freq)(struct msm_gpu *gpu);
77 void (*gpu_set_freq)(struct msm_gpu *gpu, unsigned long freq);
82 struct drm_device *dev;
83 struct platform_device *pdev;
84 const struct msm_gpu_funcs *funcs;
86 /* performance counters (hw & sw): */
93 uint32_t totaltime, activetime; /* sw counters */
94 uint32_t last_cntrs[5]; /* hw counters */
95 const struct msm_gpu_perfcntr *perfcntrs;
96 uint32_t num_perfcntrs;
98 struct msm_ringbuffer *rb[MSM_GPU_MAX_RINGS];
101 /* list of GEM active objects: */
102 struct list_head active_list;
104 /* does gpu need hw_init? */
107 /* number of GPU hangs (for all contexts) */
110 /* worker for handling active-list retiring: */
111 struct work_struct retire_work;
116 struct msm_gem_address_space *aspace;
119 struct regulator *gpu_reg, *gpu_cx;
120 struct clk_bulk_data *grp_clks;
122 struct clk *ebi1_clk, *core_clk, *rbbmtimer_clk;
125 struct icc_path *icc_path;
127 /* Hang and Inactivity Detection:
129 #define DRM_MSM_INACTIVE_PERIOD 66 /* in ms (roughly four frames) */
131 #define DRM_MSM_HANGCHECK_PERIOD 500 /* in ms */
132 #define DRM_MSM_HANGCHECK_JIFFIES msecs_to_jiffies(DRM_MSM_HANGCHECK_PERIOD)
133 struct timer_list hangcheck_timer;
134 struct work_struct recover_work;
136 struct drm_gem_object *memptrs_bo;
139 struct devfreq *devfreq;
144 struct msm_gpu_state *crashstate;
147 /* It turns out that all targets use the same ringbuffer size */
148 #define MSM_GPU_RINGBUFFER_SZ SZ_32K
149 #define MSM_GPU_RINGBUFFER_BLKSIZE 32
151 #define MSM_GPU_RB_CNTL_DEFAULT \
152 (AXXX_CP_RB_CNTL_BUFSZ(ilog2(MSM_GPU_RINGBUFFER_SZ / 8)) | \
153 AXXX_CP_RB_CNTL_BLKSZ(ilog2(MSM_GPU_RINGBUFFER_BLKSIZE / 8)))
155 static inline bool msm_gpu_active(struct msm_gpu *gpu)
159 for (i = 0; i < gpu->nr_rings; i++) {
160 struct msm_ringbuffer *ring = gpu->rb[i];
162 if (ring->seqno > ring->memptrs->fence)
170 * The select_reg and select_val are just there for the benefit of the child
171 * class that actually enables the perf counter.. but msm_gpu base class
172 * will handle sampling/displaying the counters.
175 struct msm_gpu_perfcntr {
182 struct msm_gpu_submitqueue {
187 struct list_head node;
191 struct msm_gpu_state_bo {
198 struct msm_gpu_state {
200 struct timespec64 time;
211 } ring[MSM_GPU_MAX_RINGS];
222 struct msm_gpu_state_bo *bos;
225 static inline void gpu_write(struct msm_gpu *gpu, u32 reg, u32 data)
227 msm_writel(data, gpu->mmio + (reg << 2));
230 static inline u32 gpu_read(struct msm_gpu *gpu, u32 reg)
232 return msm_readl(gpu->mmio + (reg << 2));
235 static inline void gpu_rmw(struct msm_gpu *gpu, u32 reg, u32 mask, u32 or)
237 uint32_t val = gpu_read(gpu, reg);
240 gpu_write(gpu, reg, val | or);
243 static inline u64 gpu_read64(struct msm_gpu *gpu, u32 lo, u32 hi)
248 * Why not a readq here? Two reasons: 1) many of the LO registers are
249 * not quad word aligned and 2) the GPU hardware designers have a bit
250 * of a history of putting registers where they fit, especially in
251 * spins. The longer a GPU family goes the higher the chance that
252 * we'll get burned. We could do a series of validity checks if we
253 * wanted to, but really is a readq() that much better? Nah.
257 * For some lo/hi registers (like perfcounters), the hi value is latched
258 * when the lo is read, so make sure to read the lo first to trigger
261 val = (u64) msm_readl(gpu->mmio + (lo << 2));
262 val |= ((u64) msm_readl(gpu->mmio + (hi << 2)) << 32);
267 static inline void gpu_write64(struct msm_gpu *gpu, u32 lo, u32 hi, u64 val)
269 /* Why not a writeq here? Read the screed above */
270 msm_writel(lower_32_bits(val), gpu->mmio + (lo << 2));
271 msm_writel(upper_32_bits(val), gpu->mmio + (hi << 2));
274 int msm_gpu_pm_suspend(struct msm_gpu *gpu);
275 int msm_gpu_pm_resume(struct msm_gpu *gpu);
276 void msm_gpu_resume_devfreq(struct msm_gpu *gpu);
278 int msm_gpu_hw_init(struct msm_gpu *gpu);
280 void msm_gpu_perfcntr_start(struct msm_gpu *gpu);
281 void msm_gpu_perfcntr_stop(struct msm_gpu *gpu);
282 int msm_gpu_perfcntr_sample(struct msm_gpu *gpu, uint32_t *activetime,
283 uint32_t *totaltime, uint32_t ncntrs, uint32_t *cntrs);
285 void msm_gpu_retire(struct msm_gpu *gpu);
286 void msm_gpu_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit,
287 struct msm_file_private *ctx);
289 int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
290 struct msm_gpu *gpu, const struct msm_gpu_funcs *funcs,
291 const char *name, struct msm_gpu_config *config);
293 void msm_gpu_cleanup(struct msm_gpu *gpu);
295 struct msm_gpu *adreno_load_gpu(struct drm_device *dev);
296 void __init adreno_register(void);
297 void __exit adreno_unregister(void);
299 static inline void msm_submitqueue_put(struct msm_gpu_submitqueue *queue)
302 kref_put(&queue->ref, msm_submitqueue_destroy);
305 static inline struct msm_gpu_state *msm_gpu_crashstate_get(struct msm_gpu *gpu)
307 struct msm_gpu_state *state = NULL;
309 mutex_lock(&gpu->dev->struct_mutex);
311 if (gpu->crashstate) {
312 kref_get(&gpu->crashstate->ref);
313 state = gpu->crashstate;
316 mutex_unlock(&gpu->dev->struct_mutex);
321 static inline void msm_gpu_crashstate_put(struct msm_gpu *gpu)
323 mutex_lock(&gpu->dev->struct_mutex);
325 if (gpu->crashstate) {
326 if (gpu->funcs->gpu_state_put(gpu->crashstate))
327 gpu->crashstate = NULL;
330 mutex_unlock(&gpu->dev->struct_mutex);
333 #endif /* __MSM_GPU_H__ */