// SPDX-License-Identifier: GPL-2.0
/* Copyright 2018 Marty E. Plummer <hanetzer@startmail.com> */
/* Copyright 2019 Linaro, Ltd., Rob Herring <robh@kernel.org> */
/* Copyright 2019 Collabora ltd. */
#ifdef CONFIG_ARM_ARCH_TIMER
#include <asm/arch_timer.h>
#endif
#include <linux/module.h>
#include <linux/of.h>
#include <linux/pagemap.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <drm/panfrost_drm.h>
#include <drm/drm_debugfs.h>
#include <drm/drm_drv.h>
#include <drm/drm_ioctl.h>
#include <drm/drm_print.h>
#include <drm/drm_syncobj.h>
#include <drm/drm_utils.h>
#include "panfrost_device.h"
#include "panfrost_drv.h"
#include "panfrost_gem.h"
#include "panfrost_mmu.h"
#include "panfrost_job.h"
#include "panfrost_gpu.h"
#include "panfrost_perfcnt.h"
#define JOB_REQUIREMENTS (PANFROST_JD_REQ_FS | PANFROST_JD_REQ_CYCLE_COUNT)
static bool unstable_ioctls;
module_param_unsafe(unstable_ioctls, bool, 0600);
static int panfrost_ioctl_query_timestamp(struct panfrost_device *pfdev,
u64 *arg)
{
int ret;
ret = pm_runtime_resume_and_get(pfdev->base.dev);
if (ret)
return ret;
panfrost_cycle_counter_get(pfdev);
*arg = panfrost_timestamp_read(pfdev);
panfrost_cycle_counter_put(pfdev);
pm_runtime_put(pfdev->base.dev);
return 0;
}
static int panfrost_ioctl_get_param(struct drm_device *ddev, void *data, struct drm_file *file)
{
struct drm_panfrost_get_param *param = data;
struct panfrost_device *pfdev = to_panfrost_device(ddev);
int ret;
if (param->pad != 0)
return -EINVAL;
#define PANFROST_FEATURE(name, member) \
case DRM_PANFROST_PARAM_ ## name: \
param->value = pfdev->features.member; \
break
#define PANFROST_FEATURE_ARRAY(name, member, max) \
case DRM_PANFROST_PARAM_ ## name ## 0 ... \
DRM_PANFROST_PARAM_ ## name ## max: \
param->value = pfdev->features.member[param->param - \
DRM_PANFROST_PARAM_ ## name ## 0]; \
break
switch (param->param) {
PANFROST_FEATURE(GPU_PROD_ID, id);
PANFROST_FEATURE(GPU_REVISION, revision);
PANFROST_FEATURE(SHADER_PRESENT, shader_present);
PANFROST_FEATURE(TILER_PRESENT, tiler_present);
PANFROST_FEATURE(L2_PRESENT, l2_present);
PANFROST_FEATURE(STACK_PRESENT, stack_present);
PANFROST_FEATURE(AS_PRESENT, as_present);
PANFROST_FEATURE(JS_PRESENT, js_present);
PANFROST_FEATURE(L2_FEATURES, l2_features);
PANFROST_FEATURE(CORE_FEATURES, core_features);
PANFROST_FEATURE(TILER_FEATURES, tiler_features);
PANFROST_FEATURE(MEM_FEATURES, mem_features);
PANFROST_FEATURE(MMU_FEATURES, mmu_features);
PANFROST_FEATURE(THREAD_FEATURES, thread_features);
PANFROST_FEATURE(MAX_THREADS, max_threads);
PANFROST_FEATURE(THREAD_MAX_WORKGROUP_SZ,
thread_max_workgroup_sz);
PANFROST_FEATURE(THREAD_MAX_BARRIER_SZ,
thread_max_barrier_sz);
PANFROST_FEATURE(COHERENCY_FEATURES, coherency_features);
PANFROST_FEATURE(AFBC_FEATURES, afbc_features);
PANFROST_FEATURE_ARRAY(TEXTURE_FEATURES, texture_features, 3);
PANFROST_FEATURE_ARRAY(JS_FEATURES, js_features, 15);
PANFROST_FEATURE(NR_CORE_GROUPS, nr_core_groups);
PANFROST_FEATURE(THREAD_TLS_ALLOC, thread_tls_alloc);
PANFROST_FEATURE(SELECTED_COHERENCY, selected_coherency);
case DRM_PANFROST_PARAM_SYSTEM_TIMESTAMP:
ret = panfrost_ioctl_query_timestamp(pfdev, ¶m->value);
if (ret)
return ret;
break;
case DRM_PANFROST_PARAM_SYSTEM_TIMESTAMP_FREQUENCY:
#ifdef CONFIG_ARM_ARCH_TIMER
param->value = arch_timer_get_cntfrq();
#else
param->value = 0;
#endif
break;
case DRM_PANFROST_PARAM_ALLOWED_JM_CTX_PRIORITIES:
param->value = BIT(PANFROST_JM_CTX_PRIORITY_LOW) |
BIT(PANFROST_JM_CTX_PRIORITY_MEDIUM);
if (panfrost_high_prio_allowed(file))
param->value |= BIT(PANFROST_JM_CTX_PRIORITY_HIGH);
break;
default:
return -EINVAL;
}
return 0;
}
#define PANFROST_BO_FLAGS (PANFROST_BO_NOEXEC | \
PANFROST_BO_HEAP | \
PANFROST_BO_WB_MMAP)
static int panfrost_ioctl_create_bo(struct drm_device *dev, void *data,
struct drm_file *file)
{
struct panfrost_file_priv *priv = file->driver_priv;
struct panfrost_gem_object *bo;
struct drm_panfrost_create_bo *args = data;
struct panfrost_gem_mapping *mapping;
int ret;
if (!args->size || args->pad || (args->flags & ~PANFROST_BO_FLAGS))
return -EINVAL;
/* Heaps should never be executable */
if ((args->flags & PANFROST_BO_HEAP) &&
!(args->flags & PANFROST_BO_NOEXEC))
return -EINVAL;
bo = panfrost_gem_create(dev, args->size, args->flags);
if (IS_ERR(bo))
return PTR_ERR(bo);
ret = drm_gem_handle_create(file, &bo->base.base, &args->handle);
if (ret)
goto out;
mapping = panfrost_gem_mapping_get(bo, priv);
if (mapping) {
args->offset = mapping->mmnode.start << PAGE_SHIFT;
panfrost_gem_mapping_put(mapping);
} else {
/* This can only happen if the handle from
* drm_gem_handle_create() has already been guessed and freed
* by user space
*/
ret = -EINVAL;
}
out:
drm_gem_object_put(&bo->base.base);
return ret;
}
/**
* panfrost_lookup_bos() - Sets up job->bo[] with the GEM objects
* referenced by the job.
* @dev: DRM device
* @file_priv: DRM file for this fd
* @args: IOCTL args
* @job: job being set up
*
* Resolve handles from userspace to BOs and attach them to job.
*
* Note that this function doesn't need to unreference the BOs on
* failure, because that will happen at panfrost_job_cleanup() time.
*/
static int
panfrost_lookup_bos(struct drm_device *dev,
struct drm_file *file_priv,
struct drm_panfrost_submit *args,
struct panfrost_job *job)
{
struct panfrost_file_priv *priv = file_priv->driver_priv;
struct panfrost_gem_object *bo;
unsigned int i;
int ret;
job->bo_count = args->bo_handle_count;
if (!job->bo_count)
return 0;
ret = drm_gem_objects_lookup(file_priv,
(void __user *)(uintptr_t)args->bo_handles,
job->bo_count, &job->bos);
if (ret)
return ret;
job->mappings = kvmalloc_objs(struct panfrost_gem_mapping *,
job->bo_count, GFP_KERNEL | __GFP_ZERO);
if (!job->mappings)
return -ENOMEM;
for (i = 0; i < job->bo_count; i++) {
struct panfrost_gem_mapping *mapping;
bo = to_panfrost_bo(job->bos[i]);
mapping = panfrost_gem_mapping_get(bo, priv);
if (!mapping) {
ret = -EINVAL;
break;
}
atomic_inc(&bo->gpu_usecount);
job->mappings[i] = mapping;
}
return ret;
}
/**
* panfrost_copy_in_sync() - Sets up job->deps with the sync objects
* referenced by the job.
* @dev: DRM device
* @file_priv: DRM file for this fd
* @args: IOCTL args
* @job: job being set up
*
* Resolve syncobjs from userspace to fences and attach them to job.
*
* Note that this function doesn't need to unreference the fences on
* failure, because that will happen at panfrost_job_cleanup() time.
*/
static int
panfrost_copy_in_sync(struct drm_device *dev,
struct drm_file *file_priv,
struct drm_panfrost_submit *args,
struct panfrost_job *job)
{
u32 *handles;
int ret = 0;
int i, in_fence_count;
in_fence_count = args->in_sync_count;
if (!in_fence_count)
return 0;
handles = kvmalloc_array(in_fence_count, sizeof(u32), GFP_KERNEL);
if (!handles) {
ret = -ENOMEM;
DRM_DEBUG("Failed to allocate incoming syncobj handles\n");
goto fail;
}
if (copy_from_user(handles,
(void __user *)(uintptr_t)args->in_syncs,
in_fence_count * sizeof(u32))) {
ret = -EFAULT;
DRM_DEBUG("Failed to copy in syncobj handles\n");
goto fail;
}
for (i = 0; i < in_fence_count; i++) {
ret = drm_sched_job_add_syncobj_dependency(&job->base, file_priv,
handles[i], 0);
if (ret)
goto fail;
}
fail:
kvfree(handles);
return ret;
}
static int panfrost_ioctl_submit(struct drm_device *dev, void *data,
struct drm_file *file)
{
struct panfrost_device *pfdev = to_panfrost_device(dev);
struct panfrost_file_priv *file_priv = file->driver_priv;
struct drm_panfrost_submit *args = data;
struct drm_syncobj *sync_out = NULL;
struct panfrost_jm_ctx *jm_ctx;
struct panfrost_job *job;
int ret = 0, slot;
if (args->pad)
return -EINVAL;
if (!args->jc)
return -EINVAL;
if (args->requirements & ~JOB_REQUIREMENTS)
return -EINVAL;
if (args->out_sync > 0) {
sync_out = drm_syncobj_find(file, args->out_sync);
if (!sync_out)
return -ENODEV;
}
jm_ctx = panfrost_jm_ctx_from_handle(file, args->jm_ctx_handle);
if (!jm_ctx) {
ret = -EINVAL;
goto out_put_syncout;
}
job = kzalloc_obj(*job);
if (!job) {
ret = -ENOMEM;
goto out_put_jm_ctx;
}
kref_init(&job->refcount);
job->pfdev = pfdev;
job->jc = args->jc;
job->requirements = args->requirements;
job->flush_id = panfrost_gpu_get_latest_flush_id(pfdev);
job->mmu = file_priv->mmu;
job->ctx = panfrost_jm_ctx_get(jm_ctx);
job->engine_usage = &file_priv->engine_usage;
slot = panfrost_job_get_slot(job);
ret = drm_sched_job_init(&job->base,
&jm_ctx->slot_entity[slot],
1, NULL, file->client_id);
if (ret)
goto out_put_job;
ret = panfrost_copy_in_sync(dev, file, args, job);
if (ret)
goto out_cleanup_job;
ret = panfrost_lookup_bos(dev, file, args, job);
if (ret)
goto out_cleanup_job;
ret = panfrost_job_push(job);
if (ret)
goto out_cleanup_job;
/* Update the return sync object for the job */
if (sync_out)
drm_syncobj_replace_fence(sync_out, job->render_done_fence);
out_cleanup_job:
if (ret)
drm_sched_job_cleanup(&job->base);
out_put_job:
panfrost_job_put(job);
out_put_jm_ctx:
panfrost_jm_ctx_put(jm_ctx);
out_put_syncout:
if (sync_out)
drm_syncobj_put(sync_out);
return ret;
}
static int
panfrost_ioctl_wait_bo(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
long ret;
struct drm_panfrost_wait_bo *args = data;
struct drm_gem_object *gem_obj;
unsigned long timeout = drm_timeout_abs_to_jiffies(args->timeout_ns);
if (args->pad)
return -EINVAL;
gem_obj = drm_gem_object_lookup(file_priv, args->handle);
if (!gem_obj)
return -ENOENT;
ret = dma_resv_wait_timeout(gem_obj->resv, DMA_RESV_USAGE_READ,
true, timeout);
if (!ret)
ret = timeout ? -ETIMEDOUT : -EBUSY;
else if (ret > 0)
ret = 0;
drm_gem_object_put(gem_obj);
return ret;
}
static int panfrost_ioctl_mmap_bo(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_panfrost_mmap_bo *args = data;
struct drm_gem_object *gem_obj;
int ret;
if (args->flags != 0) {
DRM_INFO("unknown mmap_bo flags: %d\n", args->flags);
return -EINVAL;
}
gem_obj = drm_gem_object_lookup(file_priv, args->handle);
if (!gem_obj) {
DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
return -ENOENT;
}
/* Don't allow mmapping of heap objects as pages are not pinned. */
if (to_panfrost_bo(gem_obj)->is_heap) {
ret = -EINVAL;
goto out;
}
ret = drm_gem_create_mmap_offset(gem_obj);
if (ret == 0)
args->offset = drm_vma_node_offset_addr(&gem_obj->vma_node);
out:
drm_gem_object_put(gem_obj);
return ret;
}
static int panfrost_ioctl_get_bo_offset(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct panfrost_file_priv *priv = file_priv->driver_priv;
struct drm_panfrost_get_bo_offset *args = data;
struct panfrost_gem_mapping *mapping;
struct drm_gem_object *gem_obj;
struct panfrost_gem_object *bo;
gem_obj = drm_gem_object_lookup(file_priv, args->handle);
if (!gem_obj) {
DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
return -ENOENT;
}
bo = to_panfrost_bo(gem_obj);
mapping = panfrost_gem_mapping_get(bo, priv);
drm_gem_object_put(gem_obj);
if (!mapping)
return -EINVAL;
args->offset = mapping->mmnode.start << PAGE_SHIFT;
panfrost_gem_mapping_put(mapping);
return 0;
}
static int panfrost_ioctl_madvise(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct panfrost_file_priv *priv = file_priv->driver_priv;
struct drm_panfrost_madvise *args = data;
struct panfrost_device *pfdev = to_panfrost_device(dev);
struct drm_gem_object *gem_obj;
struct panfrost_gem_object *bo;
int ret = 0;
gem_obj = drm_gem_object_lookup(file_priv, args->handle);
if (!gem_obj) {
DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
return -ENOENT;
}
bo = to_panfrost_bo(gem_obj);
ret = dma_resv_lock_interruptible(bo->base.base.resv, NULL);
if (ret)
goto out_put_object;
mutex_lock(&pfdev->shrinker_lock);
mutex_lock(&bo->mappings.lock);
if (args->madv == PANFROST_MADV_DONTNEED) {
struct panfrost_gem_mapping *first;
first = list_first_entry(&bo->mappings.list,
struct panfrost_gem_mapping,
node);
/*
* If we want to mark the BO purgeable, there must be only one
* user: the caller FD.
* We could do something smarter and mark the BO purgeable only
* when all its users have marked it purgeable, but globally
* visible/shared BOs are likely to never be marked purgeable
* anyway, so let's not bother.
*/
if (!list_is_singular(&bo->mappings.list) ||
WARN_ON_ONCE(first->mmu != priv->mmu)) {
ret = -EINVAL;
goto out_unlock_mappings;
}
}
args->retained = drm_gem_shmem_madvise_locked(&bo->base, args->madv);
if (args->retained) {
if (args->madv == PANFROST_MADV_DONTNEED)
list_move_tail(&bo->base.madv_list,
&pfdev->shrinker_list);
else if (args->madv == PANFROST_MADV_WILLNEED)
list_del_init(&bo->base.madv_list);
}
out_unlock_mappings:
mutex_unlock(&bo->mappings.lock);
mutex_unlock(&pfdev->shrinker_lock);
dma_resv_unlock(bo->base.base.resv);
out_put_object:
drm_gem_object_put(gem_obj);
return ret;
}
static int panfrost_ioctl_set_label_bo(struct drm_device *ddev, void *data,
struct drm_file *file)
{
struct drm_panfrost_set_label_bo *args = data;
struct drm_gem_object *obj;
const char *label = NULL;
int ret = 0;
if (args->pad)
return -EINVAL;
obj = drm_gem_object_lookup(file, args->handle);
if (!obj)
return -ENOENT;
if (args->label) {
label = strndup_user(u64_to_user_ptr(args->label),
PANFROST_BO_LABEL_MAXLEN);
if (IS_ERR(label)) {
ret = PTR_ERR(label);
if (ret == -EINVAL)
ret = -E2BIG;
goto err_put_obj;
}
}
/*
* We treat passing a label of length 0 and passing a NULL label
* differently, because even though they might seem conceptually
* similar, future uses of the BO label might expect a different
* behaviour in each case.
*/
panfrost_gem_set_label(obj, label);
err_put_obj:
drm_gem_object_put(obj);
return ret;
}
static int panfrost_ioctl_jm_ctx_create(struct drm_device *dev, void *data,
struct drm_file *file)
{
return panfrost_jm_ctx_create(file, data);
}
static int panfrost_ioctl_jm_ctx_destroy(struct drm_device *dev, void *data,
struct drm_file *file)
{
const struct drm_panfrost_jm_ctx_destroy *args = data;
if (args->pad)
return -EINVAL;
/* We can't destroy the default context created when the file is opened. */
if (!args->handle)
return -EINVAL;
return panfrost_jm_ctx_destroy(file, args->handle);
}
static int panfrost_ioctl_sync_bo(struct drm_device *ddev, void *data,
struct drm_file *file)
{
struct drm_panfrost_sync_bo *args = data;
struct drm_panfrost_bo_sync_op *ops;
struct drm_gem_object *obj;
int ret;
u32 i;
if (args->pad)
return -EINVAL;
if (!args->op_count)
return 0;
ops = kvmalloc_objs(*ops, args->op_count);
if (!ops) {
DRM_DEBUG("Failed to allocate incoming BO sync ops array\n");
return -ENOMEM;
}
if (copy_from_user(ops, (void __user *)(uintptr_t)args->ops,
args->op_count * sizeof(*ops))) {
DRM_DEBUG("Failed to copy in BO sync ops\n");
ret = -EFAULT;
goto err_ops;
}
for (i = 0; i < args->op_count; i++) {
obj = drm_gem_object_lookup(file, ops[i].handle);
if (!obj) {
ret = -ENOENT;
goto err_ops;
}
ret = panfrost_gem_sync(obj, ops[i].type,
ops[i].offset, ops[i].size);
drm_gem_object_put(obj);
if (ret)
goto err_ops;
}
err_ops:
kvfree(ops);
return ret;
}
static int panfrost_ioctl_query_bo_info(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct drm_panfrost_query_bo_info *args = data;
struct drm_gem_object *gem_obj;
struct panfrost_gem_object *bo;
gem_obj = drm_gem_object_lookup(file_priv, args->handle);
if (!gem_obj) {
DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
return -ENOENT;
}
bo = to_panfrost_bo(gem_obj);
args->pad = 0;
args->create_flags = 0;
args->extra_flags = 0;
if (drm_gem_is_imported(gem_obj)) {
args->extra_flags |= DRM_PANFROST_BO_IS_IMPORTED;
} else {
if (bo->noexec)
args->create_flags |= PANFROST_BO_NOEXEC;
if (bo->is_heap)
args->create_flags |= PANFROST_BO_HEAP;
if (!bo->base.map_wc)
args->create_flags |= PANFROST_BO_WB_MMAP;
}
drm_gem_object_put(gem_obj);
return 0;
}
int panfrost_unstable_ioctl_check(void)
{
if (!unstable_ioctls)
return -ENOSYS;
return 0;
}
static int
panfrost_open(struct drm_device *dev, struct drm_file *file)
{
int ret;
struct panfrost_device *pfdev = to_panfrost_device(dev);
struct panfrost_file_priv *panfrost_priv;
panfrost_priv = kzalloc_obj(*panfrost_priv);
if (!panfrost_priv)
return -ENOMEM;
panfrost_priv->pfdev = pfdev;
file->driver_priv = panfrost_priv;
panfrost_priv->mmu = panfrost_mmu_ctx_create(pfdev);
if (IS_ERR(panfrost_priv->mmu)) {
ret = PTR_ERR(panfrost_priv->mmu);
goto err_free;
}
ret = panfrost_jm_open(file);
if (ret)
goto err_job;
return 0;
err_job:
panfrost_mmu_ctx_put(panfrost_priv->mmu);
err_free:
kfree(panfrost_priv);
return ret;
}
static void
panfrost_postclose(struct drm_device *dev, struct drm_file *file)
{
struct panfrost_file_priv *panfrost_priv = file->driver_priv;
panfrost_perfcnt_close(file);
panfrost_jm_close(file);
panfrost_mmu_ctx_put(panfrost_priv->mmu);
kfree(panfrost_priv);
}
static const struct drm_ioctl_desc panfrost_drm_driver_ioctls[] = {
#define PANFROST_IOCTL(n, func, flags) \
DRM_IOCTL_DEF_DRV(PANFROST_##n, panfrost_ioctl_##func, flags)
PANFROST_IOCTL(SUBMIT, submit, DRM_RENDER_ALLOW),
PANFROST_IOCTL(WAIT_BO, wait_bo, DRM_RENDER_ALLOW),
PANFROST_IOCTL(CREATE_BO, create_bo, DRM_RENDER_ALLOW),
PANFROST_IOCTL(MMAP_BO, mmap_bo, DRM_RENDER_ALLOW),
PANFROST_IOCTL(GET_PARAM, get_param, DRM_RENDER_ALLOW),
PANFROST_IOCTL(GET_BO_OFFSET, get_bo_offset, DRM_RENDER_ALLOW),
PANFROST_IOCTL(PERFCNT_ENABLE, perfcnt_enable, DRM_RENDER_ALLOW),
PANFROST_IOCTL(PERFCNT_DUMP, perfcnt_dump, DRM_RENDER_ALLOW),
PANFROST_IOCTL(MADVISE, madvise, DRM_RENDER_ALLOW),
PANFROST_IOCTL(SET_LABEL_BO, set_label_bo, DRM_RENDER_ALLOW),
PANFROST_IOCTL(JM_CTX_CREATE, jm_ctx_create, DRM_RENDER_ALLOW),
PANFROST_IOCTL(JM_CTX_DESTROY, jm_ctx_destroy, DRM_RENDER_ALLOW),
PANFROST_IOCTL(SYNC_BO, sync_bo, DRM_RENDER_ALLOW),
PANFROST_IOCTL(QUERY_BO_INFO, query_bo_info, DRM_RENDER_ALLOW),
};
static void panfrost_gpu_show_fdinfo(struct panfrost_device *pfdev,
struct panfrost_file_priv *panfrost_priv,
struct drm_printer *p)
{
int i;
/*
* IMPORTANT NOTE: drm-cycles and drm-engine measurements are not
* accurate, as they only provide a rough estimation of the number of
* GPU cycles and CPU time spent in a given context. This is due to two
* different factors:
* - Firstly, we must consider the time the CPU and then the kernel
* takes to process the GPU interrupt, which means additional time and
* GPU cycles will be added in excess to the real figure.
* - Secondly, the pipelining done by the Job Manager (2 job slots per
* engine) implies there is no way to know exactly how much time each
* job spent on the GPU.
*/
for (i = 0; i < NUM_JOB_SLOTS - 1; i++) {
if (pfdev->profile_mode) {
drm_printf(p, "drm-engine-%s:\t%llu ns\n",
panfrost_engine_names[i],
panfrost_priv->engine_usage.elapsed_ns[i]);
drm_printf(p, "drm-cycles-%s:\t%llu\n",
panfrost_engine_names[i],
panfrost_priv->engine_usage.cycles[i]);
}
drm_printf(p, "drm-maxfreq-%s:\t%lu Hz\n",
panfrost_engine_names[i], pfdev->pfdevfreq.fast_rate);
drm_printf(p, "drm-curfreq-%s:\t%lu Hz\n",
panfrost_engine_names[i], pfdev->pfdevfreq.current_frequency);
}
}
static void panfrost_show_fdinfo(struct drm_printer *p, struct drm_file *file)
{
struct panfrost_device *pfdev = to_panfrost_device(file->minor->dev);
panfrost_gpu_show_fdinfo(pfdev, file->driver_priv, p);
drm_show_memory_stats(p, file);
}
static const struct file_operations panfrost_drm_driver_fops = {
.owner = THIS_MODULE,
DRM_GEM_FOPS,
.show_fdinfo = drm_show_fdinfo,
};
#ifdef CONFIG_DEBUG_FS
static int panthor_gems_show(struct seq_file *m, void *data)
{
struct drm_info_node *node = m->private;
struct panfrost_device *pfdev = to_panfrost_device(node->minor->dev);
panfrost_gem_debugfs_print_bos(pfdev, m);
return 0;
}
static void show_panfrost_jm_ctx(struct panfrost_jm_ctx *jm_ctx, u32 handle,
struct seq_file *m)
{
struct drm_device *ddev = ((struct drm_info_node *)m->private)->minor->dev;
const char *prio = "UNKNOWN";
static const char * const prios[] = {
[DRM_SCHED_PRIORITY_HIGH] = "HIGH",
[DRM_SCHED_PRIORITY_NORMAL] = "NORMAL",
[DRM_SCHED_PRIORITY_LOW] = "LOW",
};
if (jm_ctx->slot_entity[0].priority !=
jm_ctx->slot_entity[1].priority)
drm_warn(ddev, "Slot priorities should be the same in a single context");
if (jm_ctx->slot_entity[0].priority < ARRAY_SIZE(prios))
prio = prios[jm_ctx->slot_entity[0].priority];
seq_printf(m, " JM context %u: priority %s\n", handle, prio);
}
static int show_file_jm_ctxs(struct panfrost_file_priv *pfile,
struct seq_file *m)
{
struct panfrost_jm_ctx *jm_ctx;
unsigned long i;
xa_lock(&pfile->jm_ctxs);
xa_for_each(&pfile->jm_ctxs, i, jm_ctx) {
jm_ctx = panfrost_jm_ctx_get(jm_ctx);
xa_unlock(&pfile->jm_ctxs);
show_panfrost_jm_ctx(jm_ctx, i, m);
panfrost_jm_ctx_put(jm_ctx);
xa_lock(&pfile->jm_ctxs);
}
xa_unlock(&pfile->jm_ctxs);
return 0;
}
static struct drm_info_list panthor_debugfs_list[] = {
{"gems",
panthor_gems_show, 0, NULL},
};
static int panthor_gems_debugfs_init(struct drm_minor *minor)
{
drm_debugfs_create_files(panthor_debugfs_list,
ARRAY_SIZE(panthor_debugfs_list),
minor->debugfs_root, minor);
return 0;
}
static int show_each_file(struct seq_file *m, void *arg)
{
struct drm_info_node *node = (struct drm_info_node *)m->private;
struct drm_device *ddev = node->minor->dev;
int (*show)(struct panfrost_file_priv *, struct seq_file *) =
node->info_ent->data;
struct drm_file *file;
int ret;
ret = mutex_lock_interruptible(&ddev->filelist_mutex);
if (ret)
return ret;
list_for_each_entry(file, &ddev->filelist, lhead) {
struct task_struct *task;
struct panfrost_file_priv *pfile = file->driver_priv;
struct pid *pid;
/*
* Although we have a valid reference on file->pid, that does
* not guarantee that the task_struct who called get_pid() is
* still alive (e.g. get_pid(current) => fork() => exit()).
* Therefore, we need to protect this ->comm access using RCU.
*/
rcu_read_lock();
pid = rcu_dereference(file->pid);
task = pid_task(pid, PIDTYPE_TGID);
seq_printf(m, "client_id %8llu pid %8d command %s:\n",
file->client_id, pid_nr(pid),
task ? task->comm : "<unknown>");
rcu_read_unlock();
ret = show(pfile, m);
if (ret < 0)
break;
seq_puts(m, "\n");
}
mutex_unlock(&ddev->filelist_mutex);
return ret;
}
static struct drm_info_list panfrost_sched_debugfs_list[] = {
{ "sched_ctxs", show_each_file, 0, show_file_jm_ctxs },
};
static void panfrost_sched_debugfs_init(struct drm_minor *minor)
{
drm_debugfs_create_files(panfrost_sched_debugfs_list,
ARRAY_SIZE(panfrost_sched_debugfs_list),
minor->debugfs_root, minor);
}
static void panfrost_debugfs_init(struct drm_minor *minor)
{
panthor_gems_debugfs_init(minor);
panfrost_sched_debugfs_init(minor);
}
#endif
/*
* Panfrost driver version:
* - 1.0 - initial interface
* - 1.1 - adds HEAP and NOEXEC flags for CREATE_BO
* - 1.2 - adds AFBC_FEATURES query
* - 1.3 - adds JD_REQ_CYCLE_COUNT job requirement for SUBMIT
* - adds SYSTEM_TIMESTAMP and SYSTEM_TIMESTAMP_FREQUENCY queries
* - 1.4 - adds SET_LABEL_BO
* - 1.5 - adds JM_CTX_{CREATE,DESTROY} ioctls and extend SUBMIT to allow
* context creation with configurable priorities/affinity
* - 1.6 - adds PANFROST_BO_MAP_WB, PANFROST_IOCTL_SYNC_BO,
* PANFROST_IOCTL_QUERY_BO_INFO and
* DRM_PANFROST_PARAM_SELECTED_COHERENCY
*/
static const struct drm_driver panfrost_drm_driver = {
.driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ,
.open = panfrost_open,
.postclose = panfrost_postclose,
.show_fdinfo = panfrost_show_fdinfo,
.ioctls = panfrost_drm_driver_ioctls,
.num_ioctls = ARRAY_SIZE(panfrost_drm_driver_ioctls),
.fops = &panfrost_drm_driver_fops,
.name = "panfrost",
.desc = "panfrost DRM",
.major = 1,
.minor = 6,
.gem_create_object = panfrost_gem_create_object,
.gem_prime_import = panfrost_gem_prime_import,
.gem_prime_import_sg_table = panfrost_gem_prime_import_sg_table,
#ifdef CONFIG_DEBUG_FS
.debugfs_init = panfrost_debugfs_init,
#endif
};
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
bool panfrost_transparent_hugepage = true;
module_param_named(transparent_hugepage, panfrost_transparent_hugepage, bool, 0400);
MODULE_PARM_DESC(transparent_hugepage, "Use a dedicated tmpfs mount point with Transparent Hugepage enabled (true = default)");
#endif
static int panfrost_probe(struct platform_device *pdev)
{
struct panfrost_device *pfdev;
int err;
pfdev = devm_drm_dev_alloc(&pdev->dev, &panfrost_drm_driver,
struct panfrost_device, base);
if (IS_ERR(pfdev))
return PTR_ERR(pfdev);
platform_set_drvdata(pdev, pfdev);
pfdev->comp = of_device_get_match_data(&pdev->dev);
if (!pfdev->comp)
return -ENODEV;
pfdev->coherent = device_get_dma_attr(&pdev->dev) == DEV_DMA_COHERENT;
mutex_init(&pfdev->shrinker_lock);
INIT_LIST_HEAD(&pfdev->shrinker_list);
err = panfrost_device_init(pfdev);
if (err) {
if (err != -EPROBE_DEFER)
dev_err(&pdev->dev, "Fatal error during GPU init\n");
goto err_out0;
}
pm_runtime_set_active(pfdev->base.dev);
pm_runtime_mark_last_busy(pfdev->base.dev);
pm_runtime_enable(pfdev->base.dev);
pm_runtime_set_autosuspend_delay(pfdev->base.dev, 50); /* ~3 frames */
pm_runtime_use_autosuspend(pfdev->base.dev);
/*
* Register the DRM device with the core and the connectors with
* sysfs
*/
err = drm_dev_register(&pfdev->base, 0);
if (err < 0)
goto err_out1;
err = panfrost_gem_shrinker_init(&pfdev->base);
if (err)
goto err_out2;
return 0;
err_out2:
drm_dev_unregister(&pfdev->base);
err_out1:
pm_runtime_disable(pfdev->base.dev);
panfrost_device_fini(pfdev);
pm_runtime_set_suspended(pfdev->base.dev);
err_out0:
return err;
}
static void panfrost_remove(struct platform_device *pdev)
{
struct panfrost_device *pfdev = platform_get_drvdata(pdev);
drm_dev_unregister(&pfdev->base);
panfrost_gem_shrinker_cleanup(&pfdev->base);
pm_runtime_get_sync(pfdev->base.dev);
pm_runtime_disable(pfdev->base.dev);
panfrost_device_fini(pfdev);
pm_runtime_set_suspended(pfdev->base.dev);
}
static ssize_t profiling_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct panfrost_device *pfdev = dev_get_drvdata(dev);
return sysfs_emit(buf, "%d\n", pfdev->profile_mode);
}
static ssize_t profiling_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t len)
{
struct panfrost_device *pfdev = dev_get_drvdata(dev);
bool value;
int err;
err = kstrtobool(buf, &value);
if (err)
return err;
pfdev->profile_mode = value;
return len;
}
static DEVICE_ATTR_RW(profiling);
static struct attribute *panfrost_attrs[] = {
&dev_attr_profiling.attr,
NULL,
};
ATTRIBUTE_GROUPS(panfrost);
/*
* The OPP core wants the supply names to be NULL terminated, but we need the
* correct num_supplies value for regulator core. Hence, we NULL terminate here
* and then initialize num_supplies with ARRAY_SIZE - 1.
*/
static const char * const default_supplies[] = { "mali", NULL };
static const struct panfrost_compatible default_data = {
.num_supplies = ARRAY_SIZE(default_supplies) - 1,
.supply_names = default_supplies,
.num_pm_domains = 1, /* optional */
.pm_domain_names = NULL,
};
static const struct panfrost_compatible default_pm_rt_data = {
.num_supplies = ARRAY_SIZE(default_supplies) - 1,
.supply_names = default_supplies,
.num_pm_domains = 1,
.pm_features = BIT(GPU_PM_RT),
};
static const struct panfrost_compatible amlogic_data = {
.num_supplies = ARRAY_SIZE(default_supplies) - 1,
.supply_names = default_supplies,
.vendor_quirk = panfrost_gpu_amlogic_quirk,
};
static const char * const mediatek_pm_domains[] = { "core0", "core1", "core2",
"core3", "core4" };
/*
* The old data with two power supplies for MT8183 is here only to
* keep retro-compatibility with older devicetrees, as DVFS will
* not work with this one.
*
* On new devicetrees please use the _b variant with a single and
* coupled regulators instead.
*/
static const char * const legacy_supplies[] = { "mali", "sram", NULL };
static const struct panfrost_compatible mediatek_mt8183_data = {
.num_supplies = ARRAY_SIZE(legacy_supplies) - 1,
.supply_names = legacy_supplies,
.num_pm_domains = 3,
.pm_domain_names = mediatek_pm_domains,
};
static const struct panfrost_compatible mediatek_mt8183_b_data = {
.num_supplies = ARRAY_SIZE(default_supplies) - 1,
.supply_names = default_supplies,
.num_pm_domains = 3,
.pm_domain_names = mediatek_pm_domains,
.pm_features = BIT(GPU_PM_CLK_DIS) | BIT(GPU_PM_VREG_OFF),
};
static const struct panfrost_compatible mediatek_mt8186_data = {
.num_supplies = ARRAY_SIZE(default_supplies) - 1,
.supply_names = default_supplies,
.num_pm_domains = 2,
.pm_domain_names = mediatek_pm_domains,
.pm_features = BIT(GPU_PM_CLK_DIS) | BIT(GPU_PM_VREG_OFF),
};
static const struct panfrost_compatible mediatek_mt8188_data = {
.num_supplies = ARRAY_SIZE(default_supplies) - 1,
.supply_names = default_supplies,
.num_pm_domains = 3,
.pm_domain_names = mediatek_pm_domains,
.pm_features = BIT(GPU_PM_CLK_DIS) | BIT(GPU_PM_VREG_OFF),
.gpu_quirks = BIT(GPU_QUIRK_FORCE_AARCH64_PGTABLE),
};
static const struct panfrost_compatible mediatek_mt8192_data = {
.num_supplies = ARRAY_SIZE(default_supplies) - 1,
.supply_names = default_supplies,
.num_pm_domains = 5,
.pm_domain_names = mediatek_pm_domains,
.pm_features = BIT(GPU_PM_CLK_DIS) | BIT(GPU_PM_VREG_OFF),
.gpu_quirks = BIT(GPU_QUIRK_FORCE_AARCH64_PGTABLE),
};
static const struct panfrost_compatible mediatek_mt8370_data = {
.num_supplies = ARRAY_SIZE(default_supplies) - 1,
.supply_names = default_supplies,
.num_pm_domains = 2,
.pm_domain_names = mediatek_pm_domains,
.pm_features = BIT(GPU_PM_CLK_DIS) | BIT(GPU_PM_VREG_OFF),
.gpu_quirks = BIT(GPU_QUIRK_FORCE_AARCH64_PGTABLE),
};
static const struct of_device_id dt_match[] = {
/* Set first to probe before the generic compatibles */
{ .compatible = "amlogic,meson-gxm-mali",
.data = &amlogic_data, },
{ .compatible = "amlogic,meson-g12a-mali",
.data = &amlogic_data, },
{ .compatible = "renesas,r9a08g046-mali", .data = &default_pm_rt_data },
{ .compatible = "renesas,r9a09g047-mali", .data = &default_pm_rt_data },
{ .compatible = "arm,mali-t604", .data = &default_data, },
{ .compatible = "arm,mali-t624", .data = &default_data, },
{ .compatible = "arm,mali-t628", .data = &default_data, },
{ .compatible = "arm,mali-t720", .data = &default_data, },
{ .compatible = "arm,mali-t760", .data = &default_data, },
{ .compatible = "arm,mali-t820", .data = &default_data, },
{ .compatible = "arm,mali-t830", .data = &default_data, },
{ .compatible = "arm,mali-t860", .data = &default_data, },
{ .compatible = "arm,mali-t880", .data = &default_data, },
{ .compatible = "arm,mali-bifrost", .data = &default_data, },
{ .compatible = "arm,mali-valhall-jm", .data = &default_data, },
{ .compatible = "mediatek,mt8183-mali", .data = &mediatek_mt8183_data },
{ .compatible = "mediatek,mt8183b-mali", .data = &mediatek_mt8183_b_data },
{ .compatible = "mediatek,mt8186-mali", .data = &mediatek_mt8186_data },
{ .compatible = "mediatek,mt8188-mali", .data = &mediatek_mt8188_data },
{ .compatible = "mediatek,mt8192-mali", .data = &mediatek_mt8192_data },
{ .compatible = "mediatek,mt8370-mali", .data = &mediatek_mt8370_data },
{ .compatible = "allwinner,sun50i-h616-mali", .data = &default_pm_rt_data },
{}
};
MODULE_DEVICE_TABLE(of, dt_match);
static struct platform_driver panfrost_driver = {
.probe = panfrost_probe,
.remove = panfrost_remove,
.driver = {
.name = "panfrost",
.pm = pm_ptr(&panfrost_pm_ops),
.of_match_table = dt_match,
.dev_groups = panfrost_groups,
},
};
module_platform_driver(panfrost_driver);
MODULE_AUTHOR("Panfrost Project Developers");
MODULE_DESCRIPTION("Panfrost DRM Driver");
MODULE_LICENSE("GPL v2");
MODULE_SOFTDEP("pre: governor_simpleondemand");
