1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * Copyright (C) 2013 Red Hat
4 * Author: Rob Clark <robdclark@gmail.com>
10 #include <linux/adreno-smmu-priv.h>
11 #include <linux/clk.h>
12 #include <linux/interconnect.h>
13 #include <linux/pm_opp.h>
14 #include <linux/regulator/consumer.h>
17 #include "msm_fence.h"
18 #include "msm_ringbuffer.h"
21 struct msm_gem_submit;
22 struct msm_gpu_perfcntr;
25 struct msm_gpu_config {
27 unsigned int nr_rings;
30 /* So far, with hardware that I've seen to date, we can have:
31 * + zero, one, or two z180 2d cores
32 * + a3xx or a2xx 3d core, which share a common CP (the firmware
33 * for the CP seems to implement some different PM4 packet types
34 * but the basics of cmdstream submission are the same)
36 * Which means that the eventual complete "class" hierarchy, once
37 * support for all past and present hw is in place, becomes:
44 struct msm_gpu_funcs {
45 int (*get_param)(struct msm_gpu *gpu, uint32_t param, uint64_t *value);
46 int (*hw_init)(struct msm_gpu *gpu);
47 int (*pm_suspend)(struct msm_gpu *gpu);
48 int (*pm_resume)(struct msm_gpu *gpu);
49 void (*submit)(struct msm_gpu *gpu, struct msm_gem_submit *submit);
50 void (*flush)(struct msm_gpu *gpu, struct msm_ringbuffer *ring);
51 irqreturn_t (*irq)(struct msm_gpu *irq);
52 struct msm_ringbuffer *(*active_ring)(struct msm_gpu *gpu);
53 void (*recover)(struct msm_gpu *gpu);
54 void (*destroy)(struct msm_gpu *gpu);
55 #if defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP)
56 /* show GPU status in debugfs: */
57 void (*show)(struct msm_gpu *gpu, struct msm_gpu_state *state,
58 struct drm_printer *p);
59 /* for generation specific debugfs: */
60 void (*debugfs_init)(struct msm_gpu *gpu, struct drm_minor *minor);
62 unsigned long (*gpu_busy)(struct msm_gpu *gpu);
63 struct msm_gpu_state *(*gpu_state_get)(struct msm_gpu *gpu);
64 int (*gpu_state_put)(struct msm_gpu_state *state);
65 unsigned long (*gpu_get_freq)(struct msm_gpu *gpu);
66 void (*gpu_set_freq)(struct msm_gpu *gpu, struct dev_pm_opp *opp);
67 struct msm_gem_address_space *(*create_address_space)
68 (struct msm_gpu *gpu, struct platform_device *pdev);
69 struct msm_gem_address_space *(*create_private_address_space)
70 (struct msm_gpu *gpu);
71 uint32_t (*get_rptr)(struct msm_gpu *gpu, struct msm_ringbuffer *ring);
76 struct drm_device *dev;
77 struct platform_device *pdev;
78 const struct msm_gpu_funcs *funcs;
80 struct adreno_smmu_priv adreno_smmu;
82 /* performance counters (hw & sw): */
89 uint32_t totaltime, activetime; /* sw counters */
90 uint32_t last_cntrs[5]; /* hw counters */
91 const struct msm_gpu_perfcntr *perfcntrs;
92 uint32_t num_perfcntrs;
94 struct msm_ringbuffer *rb[MSM_GPU_MAX_RINGS];
98 * List of GEM active objects on this gpu. Protected by
99 * msm_drm_private::mm_lock
101 struct list_head active_list;
103 /* does gpu need hw_init? */
106 /* number of GPU hangs (for all contexts) */
112 struct msm_gem_address_space *aspace;
115 struct regulator *gpu_reg, *gpu_cx;
116 struct clk_bulk_data *grp_clks;
118 struct clk *ebi1_clk, *core_clk, *rbbmtimer_clk;
121 /* Hang and Inactivity Detection:
123 #define DRM_MSM_INACTIVE_PERIOD 66 /* in ms (roughly four frames) */
125 #define DRM_MSM_HANGCHECK_DEFAULT_PERIOD 500 /* in ms */
126 struct timer_list hangcheck_timer;
128 /* work for handling GPU recovery: */
129 struct kthread_work recover_work;
131 /* work for handling active-list retiring: */
132 struct kthread_work retire_work;
134 /* worker for retire/recover: */
135 struct kthread_worker *worker;
137 struct drm_gem_object *memptrs_bo;
140 struct devfreq *devfreq;
145 uint32_t suspend_count;
147 struct msm_gpu_state *crashstate;
148 /* True if the hardware supports expanded apriv (a650 and newer) */
151 struct thermal_cooling_device *cooling;
154 static inline struct msm_gpu *dev_to_gpu(struct device *dev)
156 struct adreno_smmu_priv *adreno_smmu = dev_get_drvdata(dev);
157 return container_of(adreno_smmu, struct msm_gpu, adreno_smmu);
160 /* It turns out that all targets use the same ringbuffer size */
161 #define MSM_GPU_RINGBUFFER_SZ SZ_32K
162 #define MSM_GPU_RINGBUFFER_BLKSIZE 32
164 #define MSM_GPU_RB_CNTL_DEFAULT \
165 (AXXX_CP_RB_CNTL_BUFSZ(ilog2(MSM_GPU_RINGBUFFER_SZ / 8)) | \
166 AXXX_CP_RB_CNTL_BLKSZ(ilog2(MSM_GPU_RINGBUFFER_BLKSIZE / 8)))
168 static inline bool msm_gpu_active(struct msm_gpu *gpu)
172 for (i = 0; i < gpu->nr_rings; i++) {
173 struct msm_ringbuffer *ring = gpu->rb[i];
175 if (ring->seqno > ring->memptrs->fence)
183 * The select_reg and select_val are just there for the benefit of the child
184 * class that actually enables the perf counter.. but msm_gpu base class
185 * will handle sampling/displaying the counters.
188 struct msm_gpu_perfcntr {
195 struct msm_gpu_submitqueue {
200 struct msm_file_private *ctx;
201 struct list_head node;
205 struct msm_gpu_state_bo {
212 struct msm_gpu_state {
214 struct timespec64 time;
225 } ring[MSM_GPU_MAX_RINGS];
236 struct msm_gpu_state_bo *bos;
239 static inline void gpu_write(struct msm_gpu *gpu, u32 reg, u32 data)
241 msm_writel(data, gpu->mmio + (reg << 2));
244 static inline u32 gpu_read(struct msm_gpu *gpu, u32 reg)
246 return msm_readl(gpu->mmio + (reg << 2));
249 static inline void gpu_rmw(struct msm_gpu *gpu, u32 reg, u32 mask, u32 or)
251 msm_rmw(gpu->mmio + (reg << 2), mask, or);
254 static inline u64 gpu_read64(struct msm_gpu *gpu, u32 lo, u32 hi)
259 * Why not a readq here? Two reasons: 1) many of the LO registers are
260 * not quad word aligned and 2) the GPU hardware designers have a bit
261 * of a history of putting registers where they fit, especially in
262 * spins. The longer a GPU family goes the higher the chance that
263 * we'll get burned. We could do a series of validity checks if we
264 * wanted to, but really is a readq() that much better? Nah.
268 * For some lo/hi registers (like perfcounters), the hi value is latched
269 * when the lo is read, so make sure to read the lo first to trigger
272 val = (u64) msm_readl(gpu->mmio + (lo << 2));
273 val |= ((u64) msm_readl(gpu->mmio + (hi << 2)) << 32);
278 static inline void gpu_write64(struct msm_gpu *gpu, u32 lo, u32 hi, u64 val)
280 /* Why not a writeq here? Read the screed above */
281 msm_writel(lower_32_bits(val), gpu->mmio + (lo << 2));
282 msm_writel(upper_32_bits(val), gpu->mmio + (hi << 2));
285 int msm_gpu_pm_suspend(struct msm_gpu *gpu);
286 int msm_gpu_pm_resume(struct msm_gpu *gpu);
287 void msm_gpu_resume_devfreq(struct msm_gpu *gpu);
289 int msm_gpu_hw_init(struct msm_gpu *gpu);
291 void msm_gpu_perfcntr_start(struct msm_gpu *gpu);
292 void msm_gpu_perfcntr_stop(struct msm_gpu *gpu);
293 int msm_gpu_perfcntr_sample(struct msm_gpu *gpu, uint32_t *activetime,
294 uint32_t *totaltime, uint32_t ncntrs, uint32_t *cntrs);
296 void msm_gpu_retire(struct msm_gpu *gpu);
297 void msm_gpu_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit);
299 int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
300 struct msm_gpu *gpu, const struct msm_gpu_funcs *funcs,
301 const char *name, struct msm_gpu_config *config);
303 struct msm_gem_address_space *
304 msm_gpu_create_private_address_space(struct msm_gpu *gpu, struct task_struct *task);
306 void msm_gpu_cleanup(struct msm_gpu *gpu);
308 struct msm_gpu *adreno_load_gpu(struct drm_device *dev);
309 void __init adreno_register(void);
310 void __exit adreno_unregister(void);
312 static inline void msm_submitqueue_put(struct msm_gpu_submitqueue *queue)
315 kref_put(&queue->ref, msm_submitqueue_destroy);
318 static inline struct msm_gpu_state *msm_gpu_crashstate_get(struct msm_gpu *gpu)
320 struct msm_gpu_state *state = NULL;
322 mutex_lock(&gpu->dev->struct_mutex);
324 if (gpu->crashstate) {
325 kref_get(&gpu->crashstate->ref);
326 state = gpu->crashstate;
329 mutex_unlock(&gpu->dev->struct_mutex);
334 static inline void msm_gpu_crashstate_put(struct msm_gpu *gpu)
336 mutex_lock(&gpu->dev->struct_mutex);
338 if (gpu->crashstate) {
339 if (gpu->funcs->gpu_state_put(gpu->crashstate))
340 gpu->crashstate = NULL;
343 mutex_unlock(&gpu->dev->struct_mutex);
347 * Simple macro to semi-cleanly add the MAP_PRIV flag for targets that can
348 * support expanded privileges
350 #define check_apriv(gpu, flags) \
351 (((gpu)->hw_apriv ? MSM_BO_MAP_PRIV : 0) | (flags))
354 #endif /* __MSM_GPU_H__ */