1 files changed, 177 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panfrost/panfrost_device.h b/drivers/gpu/drm/panfrost/panfrost_device.h
new file mode 100644
index 000000000..4c6bdea55
--- /dev/null
+++ b/drivers/gpu/drm/panfrost/panfrost_device.h
@@ -0,0 +1,177 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright 2018 Marty E. Plummer <hanetzer@startmail.com> */
+/* Copyright 2019 Linaro, Ltd, Rob Herring <robh@kernel.org> */
+
+#ifndef __PANFROST_DEVICE_H__
+#define __PANFROST_DEVICE_H__
+
+#include <linux/atomic.h>
+#include <linux/io-pgtable.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spinlock.h>
+#include <drm/drm_device.h>
+#include <drm/drm_mm.h>
+#include <drm/gpu_scheduler.h>
+
+#include "panfrost_devfreq.h"
+
+struct panfrost_device;
+struct panfrost_mmu;
+struct panfrost_job_slot;
+struct panfrost_job;
+struct panfrost_perfcnt;
+
+#define NUM_JOB_SLOTS 3
+#define MAX_PM_DOMAINS 3
+
+struct panfrost_features {
+	u16 id;
+	u16 revision;
+
+	u64 shader_present;
+	u64 tiler_present;
+	u64 l2_present;
+	u64 stack_present;
+	u32 as_present;
+	u32 js_present;
+
+	u32 l2_features;
+	u32 core_features;
+	u32 tiler_features;
+	u32 mem_features;
+	u32 mmu_features;
+	u32 thread_features;
+	u32 max_threads;
+	u32 thread_max_workgroup_sz;
+	u32 thread_max_barrier_sz;
+	u32 coherency_features;
+	u32 texture_features[4];
+	u32 js_features[16];
+
+	u32 nr_core_groups;
+	u32 thread_tls_alloc;
+
+	unsigned long hw_features[64 / BITS_PER_LONG];
+	unsigned long hw_issues[64 / BITS_PER_LONG];
+};
+
+/*
+ * Features that cannot be automatically detected and need matching using the
+ * compatible string, typically SoC-specific.
+ */
+struct panfrost_compatible {
+	/* Supplies count and names. */
+	int num_supplies;
+	const char * const *supply_names;
+	/*
+	 * Number of power domains required, note that values 0 and 1 are
+	 * handled identically, as only values > 1 need special handling.
+	 */
+	int num_pm_domains;
+	/* Only required if num_pm_domains > 1. */
+	const char * const *pm_domain_names;
+
+	/* Vendor implementation quirks callback */
+	void (*vendor_quirk)(struct panfrost_device *pfdev);
+};
+
+struct panfrost_device {
+	struct device *dev;
+	struct drm_device *ddev;
+	struct platform_device *pdev;
+
+	void __iomem *iomem;
+	struct clk *clock;
+	struct clk *bus_clock;
+	struct regulator_bulk_data *regulators;
+	struct reset_control *rstc;
+	/* pm_domains for devices with more than one. */
+	struct device *pm_domain_devs[MAX_PM_DOMAINS];
+	struct device_link *pm_domain_links[MAX_PM_DOMAINS];
+	bool coherent;
+
+	struct panfrost_features features;
+	const struct panfrost_compatible *comp;
+
+	spinlock_t as_lock;
+	unsigned long as_in_use_mask;
+	unsigned long as_alloc_mask;
+	struct list_head as_lru_list;
+
+	struct panfrost_job_slot *js;
+
+	struct panfrost_job *jobs[NUM_JOB_SLOTS];
+	struct list_head scheduled_jobs;
+
+	struct panfrost_perfcnt *perfcnt;
+
+	struct mutex sched_lock;
+
+	struct {
+		struct work_struct work;
+		atomic_t pending;
+	} reset;
+
+	struct mutex shrinker_lock;
+	struct list_head shrinker_list;
+	struct shrinker shrinker;
+
+	struct panfrost_devfreq pfdevfreq;
+};
+
+struct panfrost_mmu {
+	struct panfrost_device *pfdev;
+	struct kref refcount;
+	struct io_pgtable_cfg pgtbl_cfg;
+	struct io_pgtable_ops *pgtbl_ops;
+	struct drm_mm mm;
+	spinlock_t mm_lock;
+	int as;
+	atomic_t as_count;
+	struct list_head list;
+};
+
+struct panfrost_file_priv {
+	struct panfrost_device *pfdev;
+
+	struct drm_sched_entity sched_entity[NUM_JOB_SLOTS];
+
+	struct panfrost_mmu *mmu;
+};
+
+static inline struct panfrost_device *to_panfrost_device(struct drm_device *ddev)
+{
+	return ddev->dev_private;
+}
+
+static inline int panfrost_model_cmp(struct panfrost_device *pfdev, s32 id)
+{
+	s32 match_id = pfdev->features.id;
+
+	if (match_id & 0xf000)
+		match_id &= 0xf00f;
+	return match_id - id;
+}
+
+static inline bool panfrost_model_is_bifrost(struct panfrost_device *pfdev)
+{
+	return panfrost_model_cmp(pfdev, 0x1000) >= 0;
+}
+
+static inline bool panfrost_model_eq(struct panfrost_device *pfdev, s32 id)
+{
+	return !panfrost_model_cmp(pfdev, id);
+}
+
+int panfrost_unstable_ioctl_check(void);
+
+int panfrost_device_init(struct panfrost_device *pfdev);
+void panfrost_device_fini(struct panfrost_device *pfdev);
+void panfrost_device_reset(struct panfrost_device *pfdev);
+
+int panfrost_device_resume(struct device *dev);
+int panfrost_device_suspend(struct device *dev);
+
+const char *panfrost_exception_name(struct panfrost_device *pfdev, u32 exception_code);
+
+#endif