--- /dev/null
+/*
+ * 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__ */
Code Review / kvmfornfv.git / blobdiff