diff options
Diffstat (limited to 'kernel/drivers/gpu/drm/msm/msm_gpu.h')
| -rw-r--r-- | kernel/drivers/gpu/drm/msm/msm_gpu.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/msm/msm_gpu.h b/kernel/drivers/gpu/drm/msm/msm_gpu.h new file mode 100644 index 000000000..fd1e4b4a6 --- /dev/null +++ b/kernel/drivers/gpu/drm/msm/msm_gpu.h @@ -0,0 +1,173 @@ +/* + * Copyright (C) 2013 Red Hat + * Author: Rob Clark <robdclark@gmail.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef __MSM_GPU_H__ +#define __MSM_GPU_H__ + +#include <linux/clk.h> +#include <linux/regulator/consumer.h> + +#include "msm_drv.h" +#include "msm_ringbuffer.h" + +struct msm_gem_submit; +struct msm_gpu_perfcntr; + +/* So far, with hardware that I've seen to date, we can have: + * + zero, one, or two z180 2d cores + * + a3xx or a2xx 3d core, which share a common CP (the firmware + * for the CP seems to implement some different PM4 packet types + * but the basics of cmdstream submission are the same) + * + * Which means that the eventual complete "class" hierarchy, once + * support for all past and present hw is in place, becomes: + * + msm_gpu + * + adreno_gpu + * + a3xx_gpu + * + a2xx_gpu + * + z180_gpu + */ +struct msm_gpu_funcs { + int (*get_param)(struct msm_gpu *gpu, uint32_t param, uint64_t *value); + int (*hw_init)(struct msm_gpu *gpu); + int (*pm_suspend)(struct msm_gpu *gpu); + int (*pm_resume)(struct msm_gpu *gpu); + int (*submit)(struct msm_gpu *gpu, struct msm_gem_submit *submit, + struct msm_file_private *ctx); + void (*flush)(struct msm_gpu *gpu); + void (*idle)(struct msm_gpu *gpu); + irqreturn_t (*irq)(struct msm_gpu *irq); + uint32_t (*last_fence)(struct msm_gpu *gpu); + void (*recover)(struct msm_gpu *gpu); + void (*destroy)(struct msm_gpu *gpu); +#ifdef CONFIG_DEBUG_FS + /* show GPU status in debugfs: */ + void (*show)(struct msm_gpu *gpu, struct seq_file *m); +#endif +}; + +struct msm_gpu { + const char *name; + struct drm_device *dev; + const struct msm_gpu_funcs *funcs; + + /* performance counters (hw & sw): */ + spinlock_t perf_lock; + bool perfcntr_active; + struct { + bool active; + ktime_t time; + } last_sample; + uint32_t totaltime, activetime; /* sw counters */ + uint32_t last_cntrs[5]; /* hw counters */ + const struct msm_gpu_perfcntr *perfcntrs; + uint32_t num_perfcntrs; + + struct msm_ringbuffer *rb; + uint32_t rb_iova; + + /* list of GEM active objects: */ + struct list_head active_list; + + uint32_t submitted_fence; + + /* is gpu powered/active? */ + int active_cnt; + bool inactive; + + /* worker for handling active-list retiring: */ + struct work_struct retire_work; + + void __iomem *mmio; + int irq; + + struct msm_mmu *mmu; + int id; + + /* Power Control: */ + struct regulator *gpu_reg, *gpu_cx; + struct clk *ebi1_clk, *grp_clks[5]; + uint32_t fast_rate, slow_rate, bus_freq; + +#ifdef CONFIG_MSM_BUS_SCALING + struct msm_bus_scale_pdata *bus_scale_table; + uint32_t bsc; +#endif + + /* Hang and Inactivity Detection: + */ +#define DRM_MSM_INACTIVE_PERIOD 66 /* in ms (roughly four frames) */ +#define DRM_MSM_INACTIVE_JIFFIES msecs_to_jiffies(DRM_MSM_INACTIVE_PERIOD) + struct timer_list inactive_timer; + struct work_struct inactive_work; +#define DRM_MSM_HANGCHECK_PERIOD 500 /* in ms */ +#define DRM_MSM_HANGCHECK_JIFFIES msecs_to_jiffies(DRM_MSM_HANGCHECK_PERIOD) + struct timer_list hangcheck_timer; + uint32_t hangcheck_fence; + struct work_struct recover_work; +}; + +static inline bool msm_gpu_active(struct msm_gpu *gpu) +{ + return gpu->submitted_fence > gpu->funcs->last_fence(gpu); +} + +/* Perf-Counters: + * The select_reg and select_val are just there for the benefit of the child + * class that actually enables the perf counter.. but msm_gpu base class + * will handle sampling/displaying the counters. + */ + +struct msm_gpu_perfcntr { + uint32_t select_reg; + uint32_t sample_reg; + uint32_t select_val; + const char *name; +}; + +static inline void gpu_write(struct msm_gpu *gpu, u32 reg, u32 data) +{ + msm_writel(data, gpu->mmio + (reg << 2)); +} + +static inline u32 gpu_read(struct msm_gpu *gpu, u32 reg) +{ + return msm_readl(gpu->mmio + (reg << 2)); +} + +int msm_gpu_pm_suspend(struct msm_gpu *gpu); +int msm_gpu_pm_resume(struct msm_gpu *gpu); + +void msm_gpu_perfcntr_start(struct msm_gpu *gpu); +void msm_gpu_perfcntr_stop(struct msm_gpu *gpu); +int msm_gpu_perfcntr_sample(struct msm_gpu *gpu, uint32_t *activetime, + uint32_t *totaltime, uint32_t ncntrs, uint32_t *cntrs); + +void msm_gpu_retire(struct msm_gpu *gpu); +int msm_gpu_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit, + struct msm_file_private *ctx); + +int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev, + struct msm_gpu *gpu, const struct msm_gpu_funcs *funcs, + const char *name, const char *ioname, const char *irqname, int ringsz); +void msm_gpu_cleanup(struct msm_gpu *gpu); + +struct msm_gpu *adreno_load_gpu(struct drm_device *dev); +void __init adreno_register(void); +void __exit adreno_unregister(void); + +#endif /* __MSM_GPU_H__ */ |