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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*/
#ifndef __MSM_GPU_H__
#define __MSM_GPU_H__
#include <linux/adreno-smmu-priv.h>
#include <linux/clk.h>
#include <linux/interconnect.h>
#include <linux/pm_opp.h>
#include <linux/regulator/consumer.h>
#include "msm_drv.h"
#include "msm_fence.h"
#include "msm_ringbuffer.h"
#include "msm_gem.h"
struct msm_gem_submit;
struct msm_gpu_perfcntr;
struct msm_gpu_state;
struct msm_gpu_config {
const char *ioname;
unsigned int nr_rings;
};
/* 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);
void (*submit)(struct msm_gpu *gpu, struct msm_gem_submit *submit);
void (*flush)(struct msm_gpu *gpu, struct msm_ringbuffer *ring);
irqreturn_t (*irq)(struct msm_gpu *irq);
struct msm_ringbuffer *(*active_ring)(struct msm_gpu *gpu);
void (*recover)(struct msm_gpu *gpu);
void (*destroy)(struct msm_gpu *gpu);
#if defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP)
/* show GPU status in debugfs: */
void (*show)(struct msm_gpu *gpu, struct msm_gpu_state *state,
struct drm_printer *p);
/* for generation specific debugfs: */
void (*debugfs_init)(struct msm_gpu *gpu, struct drm_minor *minor);
#endif
unsigned long (*gpu_busy)(struct msm_gpu *gpu);
struct msm_gpu_state *(*gpu_state_get)(struct msm_gpu *gpu);
int (*gpu_state_put)(struct msm_gpu_state *state);
unsigned long (*gpu_get_freq)(struct msm_gpu *gpu);
void (*gpu_set_freq)(struct msm_gpu *gpu, struct dev_pm_opp *opp);
struct msm_gem_address_space *(*create_address_space)
(struct msm_gpu *gpu, struct platform_device *pdev);
struct msm_gem_address_space *(*create_private_address_space)
(struct msm_gpu *gpu);
uint32_t (*get_rptr)(struct msm_gpu *gpu, struct msm_ringbuffer *ring);
};
struct msm_gpu {
const char *name;
struct drm_device *dev;
struct platform_device *pdev;
const struct msm_gpu_funcs *funcs;
struct adreno_smmu_priv adreno_smmu;
/* 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[MSM_GPU_MAX_RINGS];
int nr_rings;
/* list of GEM active objects: */
struct list_head active_list;
/* does gpu need hw_init? */
bool needs_hw_init;
/* number of GPU hangs (for all contexts) */
int global_faults;
/* worker for handling active-list retiring: */
struct work_struct retire_work;
void __iomem *mmio;
int irq;
struct msm_gem_address_space *aspace;
/* Power Control: */
struct regulator *gpu_reg, *gpu_cx;
struct clk_bulk_data *grp_clks;
int nr_clocks;
struct clk *ebi1_clk, *core_clk, *rbbmtimer_clk;
uint32_t fast_rate;
/* The gfx-mem interconnect path that's used by all GPU types. */
struct icc_path *icc_path;
/*
* Second interconnect path for some A3xx and all A4xx GPUs to the
* On Chip MEMory (OCMEM).
*/
struct icc_path *ocmem_icc_path;
/* Hang and Inactivity Detection:
*/
#define DRM_MSM_INACTIVE_PERIOD 66 /* in ms (roughly four frames) */
#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;
struct work_struct recover_work;
struct drm_gem_object *memptrs_bo;
struct {
struct devfreq *devfreq;
u64 busy_cycles;
ktime_t time;
} devfreq;
struct msm_gpu_state *crashstate;
/* True if the hardware supports expanded apriv (a650 and newer) */
bool hw_apriv;
};
static inline struct msm_gpu *dev_to_gpu(struct device *dev)
{
struct adreno_smmu_priv *adreno_smmu = dev_get_drvdata(dev);
return container_of(adreno_smmu, struct msm_gpu, adreno_smmu);
}
/* It turns out that all targets use the same ringbuffer size */
#define MSM_GPU_RINGBUFFER_SZ SZ_32K
#define MSM_GPU_RINGBUFFER_BLKSIZE 32
#define MSM_GPU_RB_CNTL_DEFAULT \
(AXXX_CP_RB_CNTL_BUFSZ(ilog2(MSM_GPU_RINGBUFFER_SZ / 8)) | \
AXXX_CP_RB_CNTL_BLKSZ(ilog2(MSM_GPU_RINGBUFFER_BLKSIZE / 8)))
static inline bool msm_gpu_active(struct msm_gpu *gpu)
{
int i;
for (i = 0; i < gpu->nr_rings; i++) {
struct msm_ringbuffer *ring = gpu->rb[i];
if (ring->seqno > ring->memptrs->fence)
return true;
}
return false;
}
/* 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;
};
struct msm_gpu_submitqueue {
int id;
u32 flags;
u32 prio;
int faults;
struct msm_file_private *ctx;
struct list_head node;
struct kref ref;
};
struct msm_gpu_state_bo {
u64 iova;
size_t size;
void *data;
bool encoded;
};
struct msm_gpu_state {
struct kref ref;
struct timespec64 time;
struct {
u64 iova;
u32 fence;
u32 seqno;
u32 rptr;
u32 wptr;
void *data;
int data_size;
bool encoded;
} ring[MSM_GPU_MAX_RINGS];
int nr_registers;
u32 *registers;
u32 rbbm_status;
char *comm;
char *cmd;
int nr_bos;
struct msm_gpu_state_bo *bos;
};
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));
}
static inline void gpu_rmw(struct msm_gpu *gpu, u32 reg, u32 mask, u32 or)
{
uint32_t val = gpu_read(gpu, reg);
val &= ~mask;
gpu_write(gpu, reg, val | or);
}
static inline u64 gpu_read64(struct msm_gpu *gpu, u32 lo, u32 hi)
{
u64 val;
/*
* Why not a readq here? Two reasons: 1) many of the LO registers are
* not quad word aligned and 2) the GPU hardware designers have a bit
* of a history of putting registers where they fit, especially in
* spins. The longer a GPU family goes the higher the chance that
* we'll get burned. We could do a series of validity checks if we
* wanted to, but really is a readq() that much better? Nah.
*/
/*
* For some lo/hi registers (like perfcounters), the hi value is latched
* when the lo is read, so make sure to read the lo first to trigger
* that
*/
val = (u64) msm_readl(gpu->mmio + (lo << 2));
val |= ((u64) msm_readl(gpu->mmio + (hi << 2)) << 32);
return val;
}
static inline void gpu_write64(struct msm_gpu *gpu, u32 lo, u32 hi, u64 val)
{
/* Why not a writeq here? Read the screed above */
msm_writel(lower_32_bits(val), gpu->mmio + (lo << 2));
msm_writel(upper_32_bits(val), gpu->mmio + (hi << 2));
}
int msm_gpu_pm_suspend(struct msm_gpu *gpu);
int msm_gpu_pm_resume(struct msm_gpu *gpu);
void msm_gpu_resume_devfreq(struct msm_gpu *gpu);
int msm_gpu_hw_init(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);
void msm_gpu_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit);
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, struct msm_gpu_config *config);
struct msm_gem_address_space *
msm_gpu_create_private_address_space(struct msm_gpu *gpu, struct task_struct *task);
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);
static inline void msm_submitqueue_put(struct msm_gpu_submitqueue *queue)
{
if (queue)
kref_put(&queue->ref, msm_submitqueue_destroy);
}
static inline struct msm_gpu_state *msm_gpu_crashstate_get(struct msm_gpu *gpu)
{
struct msm_gpu_state *state = NULL;
mutex_lock(&gpu->dev->struct_mutex);
if (gpu->crashstate) {
kref_get(&gpu->crashstate->ref);
state = gpu->crashstate;
}
mutex_unlock(&gpu->dev->struct_mutex);
return state;
}
static inline void msm_gpu_crashstate_put(struct msm_gpu *gpu)
{
mutex_lock(&gpu->dev->struct_mutex);
if (gpu->crashstate) {
if (gpu->funcs->gpu_state_put(gpu->crashstate))
gpu->crashstate = NULL;
}
mutex_unlock(&gpu->dev->struct_mutex);
}
/*
* Simple macro to semi-cleanly add the MAP_PRIV flag for targets that can
* support expanded privileges
*/
#define check_apriv(gpu, flags) \
(((gpu)->hw_apriv ? MSM_BO_MAP_PRIV : 0) | (flags))
#endif /* __MSM_GPU_H__ */