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nest-open-source / manifest_repos / mali-driver / 268e43036ceb1097d004fa09786438f2319a2a0e / . / bifrost / r9p0 / kernel / drivers / gpu / arm / midgard / mali_kbase_core_linux.c
blob: a6b0ac7731b12134236a3fd1875cb8c2f517d6cc [file] [log] [blame]
/*
*
* (C) COPYRIGHT 2010-2017 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU licence.
*
* A copy of the licence is included with the program, and can also be obtained
* from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include <mali_kbase.h>
#include <mali_kbase_config_defaults.h>
#include <mali_midg_regmap.h>
#include <mali_kbase_gator.h>
#include <mali_kbase_mem_linux.h>
#ifdef CONFIG_MALI_DEVFREQ
#include <linux/devfreq.h>
#include <backend/gpu/mali_kbase_devfreq.h>
#ifdef CONFIG_DEVFREQ_THERMAL
#include <ipa/mali_kbase_ipa_debugfs.h>
#endif /* CONFIG_DEVFREQ_THERMAL */
#endif /* CONFIG_MALI_DEVFREQ */
#ifdef CONFIG_MALI_NO_MALI
#include "mali_kbase_model_linux.h"
#endif /* CONFIG_MALI_NO_MALI */
#include "mali_kbase_mem_profile_debugfs_buf_size.h"
#include "mali_kbase_debug_mem_view.h"
#include "mali_kbase_mem.h"
#include "mali_kbase_mem_pool_debugfs.h"
#if !MALI_CUSTOMER_RELEASE
#include "mali_kbase_regs_dump_debugfs.h"
#endif /* !MALI_CUSTOMER_RELEASE */
#include "mali_kbase_regs_history_debugfs.h"
#include <mali_kbase_hwaccess_backend.h>
#include <mali_kbase_hwaccess_jm.h>
#include <mali_kbase_ctx_sched.h>
#include <backend/gpu/mali_kbase_device_internal.h>
#include "mali_kbase_ioctl.h"
#include <linux/module.h>
#include <linux/init.h>
#include <linux/poll.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/of_platform.h>
#include <linux/miscdevice.h>
#include <linux/list.h>
#include <linux/semaphore.h>
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <linux/interrupt.h>
#include <linux/mm.h>
#include <linux/compat.h> /* is_compat_task */
#include <linux/mman.h>
#include <linux/version.h>
#include <mali_kbase_hw.h>
#include <platform/mali_kbase_platform_common.h>
#if defined(CONFIG_SYNC) || defined(CONFIG_SYNC_FILE)
#include <mali_kbase_sync.h>
#endif /* CONFIG_SYNC || CONFIG_SYNC_FILE */
#include <linux/clk.h>
#include <linux/delay.h>
#include <mali_kbase_config.h>
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 13, 0))
#include <linux/pm_opp.h>
#else
#include <linux/opp.h>
#endif
#include <mali_kbase_tlstream.h>
#include <mali_kbase_as_fault_debugfs.h>
/* GPU IRQ Tags */
#define JOB_IRQ_TAG 0
#define MMU_IRQ_TAG 1
#define GPU_IRQ_TAG 2
static int kbase_dev_nr;
static DEFINE_MUTEX(kbase_dev_list_lock);
static LIST_HEAD(kbase_dev_list);
#define KERNEL_SIDE_DDK_VERSION_STRING "K:" MALI_RELEASE_NAME "(GPL)"
static int kbase_api_handshake(struct kbase_context *kctx,
struct kbase_ioctl_version_check *version)
{
switch (version->major) {
case BASE_UK_VERSION_MAJOR:
/* set minor to be the lowest common */
version->minor = min_t(int, BASE_UK_VERSION_MINOR,
(int)version->minor);
break;
default:
/* We return our actual version regardless if it
* matches the version returned by userspace -
* userspace can bail if it can't handle this
* version */
version->major = BASE_UK_VERSION_MAJOR;
version->minor = BASE_UK_VERSION_MINOR;
break;
}
/* save the proposed version number for later use */
kctx->api_version = KBASE_API_VERSION(version->major, version->minor);
return 0;
}
/**
* enum mali_error - Mali error codes shared with userspace
*
* This is subset of those common Mali errors that can be returned to userspace.
* Values of matching user and kernel space enumerators MUST be the same.
* MALI_ERROR_NONE is guaranteed to be 0.
*
* @MALI_ERROR_NONE: Success
* @MALI_ERROR_OUT_OF_GPU_MEMORY: Not used in the kernel driver
* @MALI_ERROR_OUT_OF_MEMORY: Memory allocation failure
* @MALI_ERROR_FUNCTION_FAILED: Generic error code
*/
enum mali_error {
MALI_ERROR_NONE = 0,
MALI_ERROR_OUT_OF_GPU_MEMORY,
MALI_ERROR_OUT_OF_MEMORY,
MALI_ERROR_FUNCTION_FAILED,
};
enum {
inited_mem = (1u << 0),
inited_js = (1u << 1),
/* Bit number 2 was earlier assigned to the runtime-pm initialization
* stage (which has been merged with the backend_early stage).
*/
#ifdef CONFIG_MALI_DEVFREQ
inited_devfreq = (1u << 3),
#endif /* CONFIG_MALI_DEVFREQ */
inited_tlstream = (1u << 4),
inited_backend_early = (1u << 5),
inited_backend_late = (1u << 6),
inited_device = (1u << 7),
inited_vinstr = (1u << 8),
inited_job_fault = (1u << 10),
inited_sysfs_group = (1u << 11),
inited_misc_register = (1u << 12),
inited_get_device = (1u << 13),
inited_dev_list = (1u << 14),
inited_debugfs = (1u << 15),
inited_gpu_device = (1u << 16),
inited_registers_map = (1u << 17),
inited_io_history = (1u << 18),
inited_power_control = (1u << 19),
inited_buslogger = (1u << 20),
inited_protected = (1u << 21),
inited_ctx_sched = (1u << 22)
};
#ifdef CONFIG_MALI_DEBUG
#define INACTIVE_WAIT_MS (5000)
void kbase_set_driver_inactive(struct kbase_device *kbdev, bool inactive)
{
kbdev->driver_inactive = inactive;
wake_up(&kbdev->driver_inactive_wait);
/* Wait for any running IOCTLs to complete */
if (inactive)
msleep(INACTIVE_WAIT_MS);
}
KBASE_EXPORT_TEST_API(kbase_set_driver_inactive);
#endif /* CONFIG_MALI_DEBUG */
static struct kbase_device *to_kbase_device(struct device *dev)
{
return dev_get_drvdata(dev);
}
static int assign_irqs(struct platform_device *pdev)
{
struct kbase_device *kbdev = to_kbase_device(&pdev->dev);
int i;
if (!kbdev)
return -ENODEV;
/* 3 IRQ resources */
for (i = 0; i < 3; i++) {
struct resource *irq_res;
int irqtag;
irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
if (!irq_res) {
dev_err(kbdev->dev, "No IRQ resource at index %d\n", i);
return -ENOENT;
}
#ifdef CONFIG_OF
if (!strncmp(irq_res->name, "JOB", 4)) {
irqtag = JOB_IRQ_TAG;
} else if (!strncmp(irq_res->name, "MMU", 4)) {
irqtag = MMU_IRQ_TAG;
} else if (!strncmp(irq_res->name, "GPU", 4)) {
irqtag = GPU_IRQ_TAG;
} else {
dev_err(&pdev->dev, "Invalid irq res name: '%s'\n",
irq_res->name);
return -EINVAL;
}
#else
irqtag = i;
#endif /* CONFIG_OF */
kbdev->irqs[irqtag].irq = irq_res->start;
kbdev->irqs[irqtag].flags = irq_res->flags & IRQF_TRIGGER_MASK;
}
return 0;
}
/*
* API to acquire device list mutex and
* return pointer to the device list head
*/
const struct list_head *kbase_dev_list_get(void)
{
mutex_lock(&kbase_dev_list_lock);
return &kbase_dev_list;
}
KBASE_EXPORT_TEST_API(kbase_dev_list_get);
/* API to release the device list mutex */
void kbase_dev_list_put(const struct list_head *dev_list)
{
mutex_unlock(&kbase_dev_list_lock);
}
KBASE_EXPORT_TEST_API(kbase_dev_list_put);
/* Find a particular kbase device (as specified by minor number), or find the "first" device if -1 is specified */
struct kbase_device *kbase_find_device(int minor)
{
struct kbase_device *kbdev = NULL;
struct list_head *entry;
const struct list_head *dev_list = kbase_dev_list_get();
list_for_each(entry, dev_list) {
struct kbase_device *tmp;
tmp = list_entry(entry, struct kbase_device, entry);
if (tmp->mdev.minor == minor || minor == -1) {
kbdev = tmp;
get_device(kbdev->dev);
break;
}
}
kbase_dev_list_put(dev_list);
return kbdev;
}
EXPORT_SYMBOL(kbase_find_device);
void kbase_release_device(struct kbase_device *kbdev)
{
put_device(kbdev->dev);
}
EXPORT_SYMBOL(kbase_release_device);
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0) && \
!(LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 28) && \
LINUX_VERSION_CODE < KERNEL_VERSION(4, 5, 0))
/*
* Older versions, before v4.6, of the kernel doesn't have
* kstrtobool_from_user(), except longterm 4.4.y which had it added in 4.4.28
*/
static int kstrtobool_from_user(const char __user *s, size_t count, bool *res)
{
char buf[32];
count = min(sizeof(buf), count);
if (copy_from_user(buf, s, count))
return -EFAULT;
buf[count] = '\0';
return strtobool(buf, res);
}
#endif
static ssize_t write_ctx_infinite_cache(struct file *f, const char __user *ubuf, size_t size, loff_t *off)
{
struct kbase_context *kctx = f->private_data;
int err;
bool value;
err = kstrtobool_from_user(ubuf, size, &value);
if (err)
return err;
if (value)
kbase_ctx_flag_set(kctx, KCTX_INFINITE_CACHE);
else
kbase_ctx_flag_clear(kctx, KCTX_INFINITE_CACHE);
return size;
}
static ssize_t read_ctx_infinite_cache(struct file *f, char __user *ubuf, size_t size, loff_t *off)
{
struct kbase_context *kctx = f->private_data;
char buf[32];
int count;
bool value;
value = kbase_ctx_flag(kctx, KCTX_INFINITE_CACHE);
count = scnprintf(buf, sizeof(buf), "%s\n", value ? "Y" : "N");
return simple_read_from_buffer(ubuf, size, off, buf, count);
}
static const struct file_operations kbase_infinite_cache_fops = {
.open = simple_open,
.write = write_ctx_infinite_cache,
.read = read_ctx_infinite_cache,
};
static int kbase_open(struct inode *inode, struct file *filp)
{
struct kbase_device *kbdev = NULL;
struct kbase_context *kctx;
int ret = 0;
#ifdef CONFIG_DEBUG_FS
char kctx_name[64];
#endif
kbdev = kbase_find_device(iminor(inode));
if (!kbdev)
return -ENODEV;
kctx = kbase_create_context(kbdev, is_compat_task());
if (!kctx) {
ret = -ENOMEM;
goto out;
}
init_waitqueue_head(&kctx->event_queue);
filp->private_data = kctx;
kctx->filp = filp;
if (kbdev->infinite_cache_active_default)
kbase_ctx_flag_set(kctx, KCTX_INFINITE_CACHE);
#ifdef CONFIG_DEBUG_FS
snprintf(kctx_name, 64, "%d_%d", kctx->tgid, kctx->id);
kctx->kctx_dentry = debugfs_create_dir(kctx_name,
kbdev->debugfs_ctx_directory);
if (IS_ERR_OR_NULL(kctx->kctx_dentry)) {
ret = -ENOMEM;
goto out;
}
debugfs_create_file("infinite_cache", 0644, kctx->kctx_dentry,
kctx, &kbase_infinite_cache_fops);
mutex_init(&kctx->mem_profile_lock);
kbasep_jd_debugfs_ctx_init(kctx);
kbase_debug_mem_view_init(filp);
kbase_debug_job_fault_context_init(kctx);
kbase_mem_pool_debugfs_init(kctx->kctx_dentry, &kctx->mem_pool, &kctx->lp_mem_pool);
kbase_jit_debugfs_init(kctx);
#endif /* CONFIG_DEBUG_FS */
dev_dbg(kbdev->dev, "created base context\n");
{
struct kbasep_kctx_list_element *element;
element = kzalloc(sizeof(*element), GFP_KERNEL);
if (element) {
mutex_lock(&kbdev->kctx_list_lock);
element->kctx = kctx;
list_add(&element->link, &kbdev->kctx_list);
KBASE_TLSTREAM_TL_NEW_CTX(
element->kctx,
element->kctx->id,
(u32)(element->kctx->tgid));
mutex_unlock(&kbdev->kctx_list_lock);
} else {
/* we don't treat this as a fail - just warn about it */
dev_warn(kbdev->dev, "couldn't add kctx to kctx_list\n");
}
}
return 0;
out:
kbase_release_device(kbdev);
return ret;
}
static int kbase_release(struct inode *inode, struct file *filp)
{
struct kbase_context *kctx = filp->private_data;
struct kbase_device *kbdev = kctx->kbdev;
struct kbasep_kctx_list_element *element, *tmp;
bool found_element = false;
KBASE_TLSTREAM_TL_DEL_CTX(kctx);
#ifdef CONFIG_DEBUG_FS
kbasep_mem_profile_debugfs_remove(kctx);
kbase_debug_job_fault_context_term(kctx);
#endif
mutex_lock(&kbdev->kctx_list_lock);
list_for_each_entry_safe(element, tmp, &kbdev->kctx_list, link) {
if (element->kctx == kctx) {
list_del(&element->link);
kfree(element);
found_element = true;
}
}
mutex_unlock(&kbdev->kctx_list_lock);
if (!found_element)
dev_warn(kbdev->dev, "kctx not in kctx_list\n");
filp->private_data = NULL;
mutex_lock(&kctx->vinstr_cli_lock);
/* If this client was performing hwcnt dumping and did not explicitly
* detach itself, remove it from the vinstr core now */
if (kctx->vinstr_cli) {
struct kbase_uk_hwcnt_setup setup;
setup.dump_buffer = 0llu;
kbase_vinstr_legacy_hwc_setup(
kbdev->vinstr_ctx, &kctx->vinstr_cli, &setup);
}
mutex_unlock(&kctx->vinstr_cli_lock);
kbase_destroy_context(kctx);
dev_dbg(kbdev->dev, "deleted base context\n");
kbase_release_device(kbdev);
return 0;
}
static int kbase_api_set_flags(struct kbase_context *kctx,
struct kbase_ioctl_set_flags *flags)
{
int err;
/* setup pending, try to signal that we'll do the setup,
* if setup was already in progress, err this call
*/
if (atomic_cmpxchg(&kctx->setup_in_progress, 0, 1) != 0)
return -EINVAL;
err = kbase_context_set_create_flags(kctx, flags->create_flags);
/* if bad flags, will stay stuck in setup mode */
if (err)
return err;
atomic_set(&kctx->setup_complete, 1);
return 0;
}
static int kbase_api_job_submit(struct kbase_context *kctx,
struct kbase_ioctl_job_submit *submit)
{
return kbase_jd_submit(kctx, u64_to_user_ptr(submit->addr),
submit->nr_atoms,
submit->stride, false);
}
static int kbase_api_get_gpuprops(struct kbase_context *kctx,
struct kbase_ioctl_get_gpuprops *get_props)
{
struct kbase_gpu_props *kprops = &kctx->kbdev->gpu_props;
int err;
if (get_props->flags != 0) {
dev_err(kctx->kbdev->dev, "Unsupported flags to get_gpuprops");
return -EINVAL;
}
if (get_props->size == 0)
return kprops->prop_buffer_size;
if (get_props->size < kprops->prop_buffer_size)
return -EINVAL;
err = copy_to_user(u64_to_user_ptr(get_props->buffer),
kprops->prop_buffer,
kprops->prop_buffer_size);
if (err)
return -EFAULT;
return kprops->prop_buffer_size;
}
static int kbase_api_post_term(struct kbase_context *kctx)
{
kbase_event_close(kctx);
return 0;
}
static int kbase_api_mem_alloc(struct kbase_context *kctx,
union kbase_ioctl_mem_alloc *alloc)
{
struct kbase_va_region *reg;
u64 flags = alloc->in.flags;
u64 gpu_va;
#if defined(CONFIG_64BIT)
if (!kbase_ctx_flag(kctx, KCTX_COMPAT)) {
/* force SAME_VA if a 64-bit client */
flags |= BASE_MEM_SAME_VA;
}
#endif
reg = kbase_mem_alloc(kctx, alloc->in.va_pages,
alloc->in.commit_pages,
alloc->in.extent,
&flags, &gpu_va);
if (!reg)
return -ENOMEM;
alloc->out.flags = flags;
alloc->out.gpu_va = gpu_va;
return 0;
}
static int kbase_api_mem_query(struct kbase_context *kctx,
union kbase_ioctl_mem_query *query)
{
return kbase_mem_query(kctx, query->in.gpu_addr,
query->in.query, &query->out.value);
}
static int kbase_api_mem_free(struct kbase_context *kctx,
struct kbase_ioctl_mem_free *free)
{
return kbase_mem_free(kctx, free->gpu_addr);
}
static int kbase_api_hwcnt_reader_setup(struct kbase_context *kctx,
struct kbase_ioctl_hwcnt_reader_setup *setup)
{
int ret;
struct kbase_uk_hwcnt_reader_setup args = {
.buffer_count = setup->buffer_count,
.jm_bm = setup->jm_bm,
.shader_bm = setup->shader_bm,
.tiler_bm = setup->tiler_bm,
.mmu_l2_bm = setup->mmu_l2_bm
};
mutex_lock(&kctx->vinstr_cli_lock);
ret = kbase_vinstr_hwcnt_reader_setup(kctx->kbdev->vinstr_ctx, &args);
mutex_unlock(&kctx->vinstr_cli_lock);
if (ret)
return ret;
return args.fd;
}
static int kbase_api_hwcnt_enable(struct kbase_context *kctx,
struct kbase_ioctl_hwcnt_enable *enable)
{
int ret;
struct kbase_uk_hwcnt_setup args = {
.dump_buffer = enable->dump_buffer,
.jm_bm = enable->jm_bm,
.shader_bm = enable->shader_bm,
.tiler_bm = enable->tiler_bm,
.mmu_l2_bm = enable->mmu_l2_bm
};
mutex_lock(&kctx->vinstr_cli_lock);
ret = kbase_vinstr_legacy_hwc_setup(kctx->kbdev->vinstr_ctx,
&kctx->vinstr_cli, &args);
mutex_unlock(&kctx->vinstr_cli_lock);
return ret;
}
static int kbase_api_hwcnt_dump(struct kbase_context *kctx)
{
int ret;
mutex_lock(&kctx->vinstr_cli_lock);
ret = kbase_vinstr_hwc_dump(kctx->vinstr_cli,
BASE_HWCNT_READER_EVENT_MANUAL);
mutex_unlock(&kctx->vinstr_cli_lock);
return ret;
}
static int kbase_api_hwcnt_clear(struct kbase_context *kctx)
{
int ret;
mutex_lock(&kctx->vinstr_cli_lock);
ret = kbase_vinstr_hwc_clear(kctx->vinstr_cli);
mutex_unlock(&kctx->vinstr_cli_lock);
return ret;
}
static int kbase_api_disjoint_query(struct kbase_context *kctx,
struct kbase_ioctl_disjoint_query *query)
{
query->counter = kbase_disjoint_event_get(kctx->kbdev);
return 0;
}
static int kbase_api_get_ddk_version(struct kbase_context *kctx,
struct kbase_ioctl_get_ddk_version *version)
{
int ret;
int len = sizeof(KERNEL_SIDE_DDK_VERSION_STRING);
if (version->version_buffer == 0)
return len;
if (version->size < len)
return -EOVERFLOW;
ret = copy_to_user(u64_to_user_ptr(version->version_buffer),
KERNEL_SIDE_DDK_VERSION_STRING,
sizeof(KERNEL_SIDE_DDK_VERSION_STRING));
if (ret)
return -EFAULT;
return len;
}
static int kbase_api_mem_jit_init(struct kbase_context *kctx,
struct kbase_ioctl_mem_jit_init *jit_init)
{
return kbase_region_tracker_init_jit(kctx, jit_init->va_pages);
}
static int kbase_api_mem_sync(struct kbase_context *kctx,
struct kbase_ioctl_mem_sync *sync)
{
struct basep_syncset sset = {
.mem_handle.basep.handle = sync->handle,
.user_addr = sync->user_addr,
.size = sync->size,
.type = sync->type
};
return kbase_sync_now(kctx, &sset);
}
static int kbase_api_mem_find_cpu_offset(struct kbase_context *kctx,
union kbase_ioctl_mem_find_cpu_offset *find)
{
return kbasep_find_enclosing_cpu_mapping_offset(
kctx,
find->in.cpu_addr,
find->in.size,
&find->out.offset);
}
static int kbase_api_get_context_id(struct kbase_context *kctx,
struct kbase_ioctl_get_context_id *info)
{
info->id = kctx->id;
return 0;
}
static int kbase_api_tlstream_acquire(struct kbase_context *kctx,
struct kbase_ioctl_tlstream_acquire *acquire)
{
return kbase_tlstream_acquire(kctx, acquire->flags);
}
static int kbase_api_tlstream_flush(struct kbase_context *kctx)
{
kbase_tlstream_flush_streams();
return 0;
}
static int kbase_api_mem_commit(struct kbase_context *kctx,
struct kbase_ioctl_mem_commit *commit)
{
return kbase_mem_commit(kctx, commit->gpu_addr, commit->pages);
}
static int kbase_api_mem_alias(struct kbase_context *kctx,
union kbase_ioctl_mem_alias *alias)
{
struct base_mem_aliasing_info *ai;
u64 flags;
int err;
if (alias->in.nents == 0 || alias->in.nents > 2048)
return -EINVAL;
ai = vmalloc(sizeof(*ai) * alias->in.nents);
if (!ai)
return -ENOMEM;
err = copy_from_user(ai,
u64_to_user_ptr(alias->in.aliasing_info),
sizeof(*ai) * alias->in.nents);
if (err) {
vfree(ai);
return -EFAULT;
}
flags = alias->in.flags;
alias->out.gpu_va = kbase_mem_alias(kctx, &flags,
alias->in.stride, alias->in.nents,
ai, &alias->out.va_pages);
alias->out.flags = flags;
vfree(ai);
if (alias->out.gpu_va == 0)
return -ENOMEM;
return 0;
}
static int kbase_api_mem_import(struct kbase_context *kctx,
union kbase_ioctl_mem_import *import)
{
int ret;
u64 flags = import->in.flags;
ret = kbase_mem_import(kctx,
import->in.type,
u64_to_user_ptr(import->in.phandle),
import->in.padding,
&import->out.gpu_va,
&import->out.va_pages,
&flags);
import->out.flags = flags;
return ret;
}
static int kbase_api_mem_flags_change(struct kbase_context *kctx,
struct kbase_ioctl_mem_flags_change *change)
{
return kbase_mem_flags_change(kctx, change->gpu_va,
change->flags, change->mask);
}
static int kbase_api_stream_create(struct kbase_context *kctx,
struct kbase_ioctl_stream_create *stream)
{
#if defined(CONFIG_SYNC) || defined(CONFIG_SYNC_FILE)
int fd, ret;
/* Name must be NULL-terminated and padded with NULLs, so check last
* character is NULL
*/
if (stream->name[sizeof(stream->name)-1] != 0)
return -EINVAL;
ret = kbase_sync_fence_stream_create(stream->name, &fd);
if (ret)
return ret;
return fd;
#else
return -ENOENT;
#endif
}
static int kbase_api_fence_validate(struct kbase_context *kctx,
struct kbase_ioctl_fence_validate *validate)
{
#if defined(CONFIG_SYNC) || defined(CONFIG_SYNC_FILE)
return kbase_sync_fence_validate(validate->fd);
#else
return -ENOENT;
#endif
}
static int kbase_api_get_profiling_controls(struct kbase_context *kctx,
struct kbase_ioctl_get_profiling_controls *controls)
{
int ret;
if (controls->count > (FBDUMP_CONTROL_MAX - FBDUMP_CONTROL_MIN))
return -EINVAL;
ret = copy_to_user(u64_to_user_ptr(controls->buffer),
&kctx->kbdev->kbase_profiling_controls[
FBDUMP_CONTROL_MIN],
controls->count * sizeof(u32));
if (ret)
return -EFAULT;
return 0;
}
static int kbase_api_mem_profile_add(struct kbase_context *kctx,
struct kbase_ioctl_mem_profile_add *data)
{
char *buf;
int err;
if (data->len > KBASE_MEM_PROFILE_MAX_BUF_SIZE) {
dev_err(kctx->kbdev->dev, "mem_profile_add: buffer too big\n");
return -EINVAL;
}
buf = kmalloc(data->len, GFP_KERNEL);
if (ZERO_OR_NULL_PTR(buf))
return -ENOMEM;
err = copy_from_user(buf, u64_to_user_ptr(data->buffer),
data->len);
if (err) {
kfree(buf);
return -EFAULT;
}
return kbasep_mem_profile_debugfs_insert(kctx, buf, data->len);
}
static int kbase_api_soft_event_update(struct kbase_context *kctx,
struct kbase_ioctl_soft_event_update *update)
{
if (update->flags != 0)
return -EINVAL;
return kbase_soft_event_update(kctx, update->event, update->new_status);
}
#if MALI_UNIT_TEST
static int kbase_api_tlstream_test(struct kbase_context *kctx,
struct kbase_ioctl_tlstream_test *test)
{
kbase_tlstream_test(
test->tpw_count,
test->msg_delay,
test->msg_count,
test->aux_msg);
return 0;
}
static int kbase_api_tlstream_stats(struct kbase_context *kctx,
struct kbase_ioctl_tlstream_stats *stats)
{
kbase_tlstream_stats(
&stats->bytes_collected,
&stats->bytes_generated);
return 0;
}
#endif /* MALI_UNIT_TEST */
#define KBASE_HANDLE_IOCTL(cmd, function) \
case cmd: \
do { \
BUILD_BUG_ON(_IOC_DIR(cmd) != _IOC_NONE); \
return function(kctx); \
} while (0)
#define KBASE_HANDLE_IOCTL_IN(cmd, function, type) \
case cmd: \
do { \
type param; \
int err; \
BUILD_BUG_ON(_IOC_DIR(cmd) != _IOC_WRITE); \
BUILD_BUG_ON(sizeof(param) != _IOC_SIZE(cmd)); \
err = copy_from_user(&param, uarg, sizeof(param)); \
if (err) \
return -EFAULT; \
return function(kctx, &param); \
} while (0)
#define KBASE_HANDLE_IOCTL_OUT(cmd, function, type) \
case cmd: \
do { \
type param; \
int ret, err; \
BUILD_BUG_ON(_IOC_DIR(cmd) != _IOC_READ); \
BUILD_BUG_ON(sizeof(param) != _IOC_SIZE(cmd)); \
ret = function(kctx, &param); \
err = copy_to_user(uarg, &param, sizeof(param)); \
if (err) \
return -EFAULT; \
return ret; \
} while (0)
#define KBASE_HANDLE_IOCTL_INOUT(cmd, function, type) \
case cmd: \
do { \
type param; \
int ret, err; \
BUILD_BUG_ON(_IOC_DIR(cmd) != (_IOC_WRITE|_IOC_READ)); \
BUILD_BUG_ON(sizeof(param) != _IOC_SIZE(cmd)); \
err = copy_from_user(&param, uarg, sizeof(param)); \
if (err) \
return -EFAULT; \
ret = function(kctx, &param); \
err = copy_to_user(uarg, &param, sizeof(param)); \
if (err) \
return -EFAULT; \
return ret; \
} while (0)
static long kbase_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
struct kbase_context *kctx = filp->private_data;
struct kbase_device *kbdev = kctx->kbdev;
void __user *uarg = (void __user *)arg;
/* Only these ioctls are available until setup is complete */
switch (cmd) {
KBASE_HANDLE_IOCTL_INOUT(KBASE_IOCTL_VERSION_CHECK,
kbase_api_handshake,
struct kbase_ioctl_version_check);
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_SET_FLAGS,
kbase_api_set_flags,
struct kbase_ioctl_set_flags);
}
/* Block call until version handshake and setup is complete */
if (kctx->api_version == 0 || !atomic_read(&kctx->setup_complete))
return -EINVAL;
/* Normal ioctls */
switch (cmd) {
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_JOB_SUBMIT,
kbase_api_job_submit,
struct kbase_ioctl_job_submit);
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_GET_GPUPROPS,
kbase_api_get_gpuprops,
struct kbase_ioctl_get_gpuprops);
KBASE_HANDLE_IOCTL(KBASE_IOCTL_POST_TERM,
kbase_api_post_term);
KBASE_HANDLE_IOCTL_INOUT(KBASE_IOCTL_MEM_ALLOC,
kbase_api_mem_alloc,
union kbase_ioctl_mem_alloc);
KBASE_HANDLE_IOCTL_INOUT(KBASE_IOCTL_MEM_QUERY,
kbase_api_mem_query,
union kbase_ioctl_mem_query);
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_MEM_FREE,
kbase_api_mem_free,
struct kbase_ioctl_mem_free);
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_HWCNT_READER_SETUP,
kbase_api_hwcnt_reader_setup,
struct kbase_ioctl_hwcnt_reader_setup);
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_HWCNT_ENABLE,
kbase_api_hwcnt_enable,
struct kbase_ioctl_hwcnt_enable);
KBASE_HANDLE_IOCTL(KBASE_IOCTL_HWCNT_DUMP,
kbase_api_hwcnt_dump);
KBASE_HANDLE_IOCTL(KBASE_IOCTL_HWCNT_CLEAR,
kbase_api_hwcnt_clear);
KBASE_HANDLE_IOCTL_OUT(KBASE_IOCTL_DISJOINT_QUERY,
kbase_api_disjoint_query,
struct kbase_ioctl_disjoint_query);
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_GET_DDK_VERSION,
kbase_api_get_ddk_version,
struct kbase_ioctl_get_ddk_version);
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_MEM_JIT_INIT,
kbase_api_mem_jit_init,
struct kbase_ioctl_mem_jit_init);
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_MEM_SYNC,
kbase_api_mem_sync,
struct kbase_ioctl_mem_sync);
KBASE_HANDLE_IOCTL_INOUT(KBASE_IOCTL_MEM_FIND_CPU_OFFSET,
kbase_api_mem_find_cpu_offset,
union kbase_ioctl_mem_find_cpu_offset);
KBASE_HANDLE_IOCTL_OUT(KBASE_IOCTL_GET_CONTEXT_ID,
kbase_api_get_context_id,
struct kbase_ioctl_get_context_id);
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_TLSTREAM_ACQUIRE,
kbase_api_tlstream_acquire,
struct kbase_ioctl_tlstream_acquire);
KBASE_HANDLE_IOCTL(KBASE_IOCTL_TLSTREAM_FLUSH,
kbase_api_tlstream_flush);
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_MEM_COMMIT,
kbase_api_mem_commit,
struct kbase_ioctl_mem_commit);
KBASE_HANDLE_IOCTL_INOUT(KBASE_IOCTL_MEM_ALIAS,
kbase_api_mem_alias,
union kbase_ioctl_mem_alias);
KBASE_HANDLE_IOCTL_INOUT(KBASE_IOCTL_MEM_IMPORT,
kbase_api_mem_import,
union kbase_ioctl_mem_import);
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_MEM_FLAGS_CHANGE,
kbase_api_mem_flags_change,
struct kbase_ioctl_mem_flags_change);
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_STREAM_CREATE,
kbase_api_stream_create,
struct kbase_ioctl_stream_create);
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_FENCE_VALIDATE,
kbase_api_fence_validate,
struct kbase_ioctl_fence_validate);
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_GET_PROFILING_CONTROLS,
kbase_api_get_profiling_controls,
struct kbase_ioctl_get_profiling_controls);
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_MEM_PROFILE_ADD,
kbase_api_mem_profile_add,
struct kbase_ioctl_mem_profile_add);
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_SOFT_EVENT_UPDATE,
kbase_api_soft_event_update,
struct kbase_ioctl_soft_event_update);
#if MALI_UNIT_TEST
KBASE_HANDLE_IOCTL_IN(KBASE_IOCTL_TLSTREAM_TEST,
kbase_api_tlstream_test,
struct kbase_ioctl_tlstream_test);
KBASE_HANDLE_IOCTL_OUT(KBASE_IOCTL_TLSTREAM_STATS,
kbase_api_tlstream_stats,
struct kbase_ioctl_tlstream_stats);
#endif
}
dev_warn(kbdev->dev, "Unknown ioctl 0x%x nr:%d", cmd, _IOC_NR(cmd));
return -ENOIOCTLCMD;
}
static ssize_t kbase_read(struct file *filp, char __user *buf, size_t count, loff_t *f_pos)
{
struct kbase_context *kctx = filp->private_data;
struct base_jd_event_v2 uevent;
int out_count = 0;
if (count < sizeof(uevent))
return -ENOBUFS;
do {
while (kbase_event_dequeue(kctx, &uevent)) {
if (out_count > 0)
goto out;
if (filp->f_flags & O_NONBLOCK)
return -EAGAIN;
if (wait_event_interruptible(kctx->event_queue,
kbase_event_pending(kctx)) != 0)
return -ERESTARTSYS;
}
if (uevent.event_code == BASE_JD_EVENT_DRV_TERMINATED) {
if (out_count == 0)
return -EPIPE;
goto out;
}
if (copy_to_user(buf, &uevent, sizeof(uevent)) != 0)
return -EFAULT;
buf += sizeof(uevent);
out_count++;
count -= sizeof(uevent);
} while (count >= sizeof(uevent));
out:
return out_count * sizeof(uevent);
}
static unsigned int kbase_poll(struct file *filp, poll_table *wait)
{
struct kbase_context *kctx = filp->private_data;
poll_wait(filp, &kctx->event_queue, wait);
if (kbase_event_pending(kctx))
return POLLIN | POLLRDNORM;
return 0;
}
void kbase_event_wakeup(struct kbase_context *kctx)
{
KBASE_DEBUG_ASSERT(kctx);
wake_up_interruptible(&kctx->event_queue);
}
KBASE_EXPORT_TEST_API(kbase_event_wakeup);
static int kbase_check_flags(int flags)
{
/* Enforce that the driver keeps the O_CLOEXEC flag so that execve() always
* closes the file descriptor in a child process.
*/
if (0 == (flags & O_CLOEXEC))
return -EINVAL;
return 0;
}
/**
* align_and_check - Align the specified pointer to the provided alignment and
* check that it is still in range.
* @gap_end: Highest possible start address for allocation (end of gap in
* address space)
* @gap_start: Start address of current memory area / gap in address space
* @info: vm_unmapped_area_info structure passed to caller, containing
* alignment, length and limits for the allocation
* @is_shader_code: True if the allocation is for shader code (which has
* additional alignment requirements)
*
* Return: true if gap_end is now aligned correctly and is still in range,
* false otherwise
*/
static bool align_and_check(unsigned long *gap_end, unsigned long gap_start,
struct vm_unmapped_area_info *info, bool is_shader_code)
{
/* Compute highest gap address at the desired alignment */
(*gap_end) -= info->length;
(*gap_end) -= (*gap_end - info->align_offset) & info->align_mask;
if (is_shader_code) {
/* Check for 4GB boundary */
if (0 == (*gap_end & BASE_MEM_MASK_4GB))
(*gap_end) -= (info->align_offset ? info->align_offset :
info->length);
if (0 == ((*gap_end + info->length) & BASE_MEM_MASK_4GB))
(*gap_end) -= (info->align_offset ? info->align_offset :
info->length);
if (!(*gap_end & BASE_MEM_MASK_4GB) || !((*gap_end +
info->length) & BASE_MEM_MASK_4GB))
return false;
}
if ((*gap_end < info->low_limit) || (*gap_end < gap_start))
return false;
return true;
}
/* The following function is taken from the kernel and just
* renamed. As it's not exported to modules we must copy-paste it here.
*/
static unsigned long kbase_unmapped_area_topdown(struct vm_unmapped_area_info
*info, bool is_shader_code)
{
struct mm_struct *mm = current->mm;
struct vm_area_struct *vma;
unsigned long length, low_limit, high_limit, gap_start, gap_end;
/* Adjust search length to account for worst case alignment overhead */
length = info->length + info->align_mask;
if (length < info->length)
return -ENOMEM;
/*
* Adjust search limits by the desired length.
* See implementation comment at top of unmapped_area().
*/
gap_end = info->high_limit;
if (gap_end < length)
return -ENOMEM;
high_limit = gap_end - length;
if (info->low_limit > high_limit)
return -ENOMEM;
low_limit = info->low_limit + length;
/* Check highest gap, which does not precede any rbtree node */
gap_start = mm->highest_vm_end;
if (gap_start <= high_limit) {
if (align_and_check(&gap_end, gap_start, info, is_shader_code))
return gap_end;
}
/* Check if rbtree root looks promising */
if (RB_EMPTY_ROOT(&mm->mm_rb))
return -ENOMEM;
vma = rb_entry(mm->mm_rb.rb_node, struct vm_area_struct, vm_rb);
if (vma->rb_subtree_gap < length)
return -ENOMEM;
while (true) {
/* Visit right subtree if it looks promising */
gap_start = vma->vm_prev ? vma->vm_prev->vm_end : 0;
if (gap_start <= high_limit && vma->vm_rb.rb_right) {
struct vm_area_struct *right =
rb_entry(vma->vm_rb.rb_right,
struct vm_area_struct, vm_rb);
if (right->rb_subtree_gap >= length) {
vma = right;
continue;
}
}
check_current:
/* Check if current node has a suitable gap */
gap_end = vma->vm_start;
if (gap_end < low_limit)
return -ENOMEM;
if (gap_start <= high_limit && gap_end - gap_start >= length) {
/* We found a suitable gap. Clip it with the original
* high_limit. */
if (gap_end > info->high_limit)
gap_end = info->high_limit;
if (align_and_check(&gap_end, gap_start, info,
is_shader_code))
return gap_end;
}
/* Visit left subtree if it looks promising */
if (vma->vm_rb.rb_left) {
struct vm_area_struct *left =
rb_entry(vma->vm_rb.rb_left,
struct vm_area_struct, vm_rb);
if (left->rb_subtree_gap >= length) {
vma = left;
continue;
}
}
/* Go back up the rbtree to find next candidate node */
while (true) {
struct rb_node *prev = &vma->vm_rb;
if (!rb_parent(prev))
return -ENOMEM;
vma = rb_entry(rb_parent(prev),
struct vm_area_struct, vm_rb);
if (prev == vma->vm_rb.rb_right) {
gap_start = vma->vm_prev ?
vma->vm_prev->vm_end : 0;
goto check_current;
}
}
}
return -ENOMEM;
}
static unsigned long kbase_get_unmapped_area(struct file *filp,
const unsigned long addr, const unsigned long len,
const unsigned long pgoff, const unsigned long flags)
{
/* based on get_unmapped_area, but simplified slightly due to that some
* values are known in advance */
struct kbase_context *kctx = filp->private_data;
struct mm_struct *mm = current->mm;
struct vm_unmapped_area_info info;
unsigned long align_offset = 0;
unsigned long align_mask = 0;
unsigned long high_limit = mm->mmap_base;
unsigned long low_limit = PAGE_SIZE;
int cpu_va_bits = BITS_PER_LONG;
int gpu_pc_bits =
kctx->kbdev->gpu_props.props.core_props.log2_program_counter_size;
bool is_shader_code = false;
unsigned long ret;
/* err on fixed address */
if ((flags & MAP_FIXED) || addr)
return -EINVAL;
#ifdef CONFIG_64BIT
/* too big? */
if (len > TASK_SIZE - SZ_2M)
return -ENOMEM;
if (!kbase_ctx_flag(kctx, KCTX_COMPAT)) {
if (kbase_hw_has_feature(kctx->kbdev,
BASE_HW_FEATURE_33BIT_VA)) {
high_limit = kctx->same_va_end << PAGE_SHIFT;
} else {
high_limit = min_t(unsigned long, mm->mmap_base,
(kctx->same_va_end << PAGE_SHIFT));
if (len >= SZ_2M) {
align_offset = SZ_2M;
align_mask = SZ_2M - 1;
}
}
low_limit = SZ_2M;
} else {
cpu_va_bits = 32;
}
#endif /* CONFIG_64BIT */
if ((PFN_DOWN(BASE_MEM_COOKIE_BASE) <= pgoff) &&
(PFN_DOWN(BASE_MEM_FIRST_FREE_ADDRESS) > pgoff)) {
int cookie = pgoff - PFN_DOWN(BASE_MEM_COOKIE_BASE);
if (!kctx->pending_regions[cookie])
return -EINVAL;
if (!(kctx->pending_regions[cookie]->flags &
KBASE_REG_GPU_NX)) {
if (cpu_va_bits > gpu_pc_bits) {
align_offset = 1ULL << gpu_pc_bits;
align_mask = align_offset - 1;
is_shader_code = true;
}
}
#ifndef CONFIG_64BIT
} else {
return current->mm->get_unmapped_area(filp, addr, len, pgoff,
flags);
#endif
}
info.flags = 0;
info.length = len;
info.low_limit = low_limit;
info.high_limit = high_limit;
info.align_offset = align_offset;
info.align_mask = align_mask;
ret = kbase_unmapped_area_topdown(&info, is_shader_code);
if (IS_ERR_VALUE(ret) && high_limit == mm->mmap_base &&
high_limit < (kctx->same_va_end << PAGE_SHIFT)) {
/* Retry above mmap_base */
info.low_limit = mm->mmap_base;
info.high_limit = min_t(u64, TASK_SIZE,
(kctx->same_va_end << PAGE_SHIFT));
ret = kbase_unmapped_area_topdown(&info, is_shader_code);
}
return ret;
}
static const struct file_operations kbase_fops = {
.owner = THIS_MODULE,
.open = kbase_open,
.release = kbase_release,
.read = kbase_read,
.poll = kbase_poll,
.unlocked_ioctl = kbase_ioctl,
.compat_ioctl = kbase_ioctl,
.mmap = kbase_mmap,
.check_flags = kbase_check_flags,
.get_unmapped_area = kbase_get_unmapped_area,
};
/**
* show_policy - Show callback for the power_policy sysfs file.
*
* This function is called to get the contents of the power_policy sysfs
* file. This is a list of the available policies with the currently active one
* surrounded by square brackets.
*
* @dev: The device this sysfs file is for
* @attr: The attributes of the sysfs file
* @buf: The output buffer for the sysfs file contents
*
* Return: The number of bytes output to @buf.
*/
static ssize_t show_policy(struct device *dev, struct device_attribute *attr, char *const buf)
{
struct kbase_device *kbdev;
const struct kbase_pm_policy *current_policy;
const struct kbase_pm_policy *const *policy_list;
int policy_count;
int i;
ssize_t ret = 0;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
current_policy = kbase_pm_get_policy(kbdev);
policy_count = kbase_pm_list_policies(&policy_list);
for (i = 0; i < policy_count && ret < PAGE_SIZE; i++) {
if (policy_list[i] == current_policy)
ret += scnprintf(buf + ret, PAGE_SIZE - ret, "[%s] ", policy_list[i]->name);
else
ret += scnprintf(buf + ret, PAGE_SIZE - ret, "%s ", policy_list[i]->name);
}
if (ret < PAGE_SIZE - 1) {
ret += scnprintf(buf + ret, PAGE_SIZE - ret, "\n");
} else {
buf[PAGE_SIZE - 2] = '\n';
buf[PAGE_SIZE - 1] = '\0';
ret = PAGE_SIZE - 1;
}
return ret;
}
/**
* set_policy - Store callback for the power_policy sysfs file.
*
* This function is called when the power_policy sysfs file is written to.
* It matches the requested policy against the available policies and if a
* matching policy is found calls kbase_pm_set_policy() to change the
* policy.
*
* @dev: The device with sysfs file is for
* @attr: The attributes of the sysfs file
* @buf: The value written to the sysfs file
* @count: The number of bytes written to the sysfs file
*
* Return: @count if the function succeeded. An error code on failure.
*/
static ssize_t set_policy(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct kbase_device *kbdev;
const struct kbase_pm_policy *new_policy = NULL;
const struct kbase_pm_policy *const *policy_list;
int policy_count;
int i;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
policy_count = kbase_pm_list_policies(&policy_list);
for (i = 0; i < policy_count; i++) {
if (sysfs_streq(policy_list[i]->name, buf)) {
new_policy = policy_list[i];
break;
}
}
if (!new_policy) {
dev_err(dev, "power_policy: policy not found\n");
return -EINVAL;
}
kbase_pm_set_policy(kbdev, new_policy);
return count;
}
/*
* The sysfs file power_policy.
*
* This is used for obtaining information about the available policies,
* determining which policy is currently active, and changing the active
* policy.
*/
static DEVICE_ATTR(power_policy, S_IRUGO | S_IWUSR, show_policy, set_policy);
/**
* show_ca_policy - Show callback for the core_availability_policy sysfs file.
*
* This function is called to get the contents of the core_availability_policy
* sysfs file. This is a list of the available policies with the currently
* active one surrounded by square brackets.
*
* @dev: The device this sysfs file is for
* @attr: The attributes of the sysfs file
* @buf: The output buffer for the sysfs file contents
*
* Return: The number of bytes output to @buf.
*/
static ssize_t show_ca_policy(struct device *dev, struct device_attribute *attr, char * const buf)
{
struct kbase_device *kbdev;
const struct kbase_pm_ca_policy *current_policy;
const struct kbase_pm_ca_policy *const *policy_list;
int policy_count;
int i;
ssize_t ret = 0;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
current_policy = kbase_pm_ca_get_policy(kbdev);
policy_count = kbase_pm_ca_list_policies(&policy_list);
for (i = 0; i < policy_count && ret < PAGE_SIZE; i++) {
if (policy_list[i] == current_policy)
ret += scnprintf(buf + ret, PAGE_SIZE - ret, "[%s] ", policy_list[i]->name);
else
ret += scnprintf(buf + ret, PAGE_SIZE - ret, "%s ", policy_list[i]->name);
}
if (ret < PAGE_SIZE - 1) {
ret += scnprintf(buf + ret, PAGE_SIZE - ret, "\n");
} else {
buf[PAGE_SIZE - 2] = '\n';
buf[PAGE_SIZE - 1] = '\0';
ret = PAGE_SIZE - 1;
}
return ret;
}
/**
* set_ca_policy - Store callback for the core_availability_policy sysfs file.
*
* This function is called when the core_availability_policy sysfs file is
* written to. It matches the requested policy against the available policies
* and if a matching policy is found calls kbase_pm_set_policy() to change
* the policy.
*
* @dev: The device with sysfs file is for
* @attr: The attributes of the sysfs file
* @buf: The value written to the sysfs file
* @count: The number of bytes written to the sysfs file
*
* Return: @count if the function succeeded. An error code on failure.
*/
static ssize_t set_ca_policy(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct kbase_device *kbdev;
const struct kbase_pm_ca_policy *new_policy = NULL;
const struct kbase_pm_ca_policy *const *policy_list;
int policy_count;
int i;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
policy_count = kbase_pm_ca_list_policies(&policy_list);
for (i = 0; i < policy_count; i++) {
if (sysfs_streq(policy_list[i]->name, buf)) {
new_policy = policy_list[i];
break;
}
}
if (!new_policy) {
dev_err(dev, "core_availability_policy: policy not found\n");
return -EINVAL;
}
kbase_pm_ca_set_policy(kbdev, new_policy);
return count;
}
/*
* The sysfs file core_availability_policy
*
* This is used for obtaining information about the available policies,
* determining which policy is currently active, and changing the active
* policy.
*/
static DEVICE_ATTR(core_availability_policy, S_IRUGO | S_IWUSR, show_ca_policy, set_ca_policy);
/*
* show_core_mask - Show callback for the core_mask sysfs file.
*
* This function is called to get the contents of the core_mask sysfs file.
*
* @dev: The device this sysfs file is for
* @attr: The attributes of the sysfs file
* @buf: The output buffer for the sysfs file contents
*
* Return: The number of bytes output to @buf.
*/
static ssize_t show_core_mask(struct device *dev, struct device_attribute *attr, char * const buf)
{
struct kbase_device *kbdev;
ssize_t ret = 0;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
ret += scnprintf(buf + ret, PAGE_SIZE - ret,
"Current core mask (JS0) : 0x%llX\n",
kbdev->pm.debug_core_mask[0]);
ret += scnprintf(buf + ret, PAGE_SIZE - ret,
"Current core mask (JS1) : 0x%llX\n",
kbdev->pm.debug_core_mask[1]);
ret += scnprintf(buf + ret, PAGE_SIZE - ret,
"Current core mask (JS2) : 0x%llX\n",
kbdev->pm.debug_core_mask[2]);
ret += scnprintf(buf + ret, PAGE_SIZE - ret,
"Available core mask : 0x%llX\n",
kbdev->gpu_props.props.raw_props.shader_present);
return ret;
}
/**
* set_core_mask - Store callback for the core_mask sysfs file.
*
* This function is called when the core_mask sysfs file is written to.
*
* @dev: The device with sysfs file is for
* @attr: The attributes of the sysfs file
* @buf: The value written to the sysfs file
* @count: The number of bytes written to the sysfs file
*
* Return: @count if the function succeeded. An error code on failure.
*/
static ssize_t set_core_mask(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct kbase_device *kbdev;
u64 new_core_mask[3];
int items;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
items = sscanf(buf, "%llx %llx %llx",
&new_core_mask[0], &new_core_mask[1],
&new_core_mask[2]);
if (items == 1)
new_core_mask[1] = new_core_mask[2] = new_core_mask[0];
if (items == 1 || items == 3) {
u64 shader_present =
kbdev->gpu_props.props.raw_props.shader_present;
u64 group0_core_mask =
kbdev->gpu_props.props.coherency_info.group[0].
core_mask;
if ((new_core_mask[0] & shader_present) != new_core_mask[0] ||
!(new_core_mask[0] & group0_core_mask) ||
(new_core_mask[1] & shader_present) !=
new_core_mask[1] ||
!(new_core_mask[1] & group0_core_mask) ||
(new_core_mask[2] & shader_present) !=
new_core_mask[2] ||
!(new_core_mask[2] & group0_core_mask)) {
dev_err(dev, "power_policy: invalid core specification\n");
return -EINVAL;
}
if (kbdev->pm.debug_core_mask[0] != new_core_mask[0] ||
kbdev->pm.debug_core_mask[1] !=
new_core_mask[1] ||
kbdev->pm.debug_core_mask[2] !=
new_core_mask[2]) {
unsigned long flags;
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
kbase_pm_set_debug_core_mask(kbdev, new_core_mask[0],
new_core_mask[1], new_core_mask[2]);
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
}
return count;
}
dev_err(kbdev->dev, "Couldn't process set_core_mask write operation.\n"
"Use format <core_mask>\n"
"or <core_mask_js0> <core_mask_js1> <core_mask_js2>\n");
return -EINVAL;
}
/*
* The sysfs file core_mask.
*
* This is used to restrict shader core availability for debugging purposes.
* Reading it will show the current core mask and the mask of cores available.
* Writing to it will set the current core mask.
*/
static DEVICE_ATTR(core_mask, S_IRUGO | S_IWUSR, show_core_mask, set_core_mask);
/**
* set_soft_job_timeout - Store callback for the soft_job_timeout sysfs
* file.
*
* @dev: The device this sysfs file is for.
* @attr: The attributes of the sysfs file.
* @buf: The value written to the sysfs file.
* @count: The number of bytes written to the sysfs file.
*
* This allows setting the timeout for software jobs. Waiting soft event wait
* jobs will be cancelled after this period expires, while soft fence wait jobs
* will print debug information if the fence debug feature is enabled.
*
* This is expressed in milliseconds.
*
* Return: count if the function succeeded. An error code on failure.
*/
static ssize_t set_soft_job_timeout(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct kbase_device *kbdev;
int soft_job_timeout_ms;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
if ((kstrtoint(buf, 0, &soft_job_timeout_ms) != 0) ||
(soft_job_timeout_ms <= 0))
return -EINVAL;
atomic_set(&kbdev->js_data.soft_job_timeout_ms,
soft_job_timeout_ms);
return count;
}
/**
* show_soft_job_timeout - Show callback for the soft_job_timeout sysfs
* file.
*
* This will return the timeout for the software jobs.
*
* @dev: The device this sysfs file is for.
* @attr: The attributes of the sysfs file.
* @buf: The output buffer for the sysfs file contents.
*
* Return: The number of bytes output to buf.
*/
static ssize_t show_soft_job_timeout(struct device *dev,
struct device_attribute *attr,
char * const buf)
{
struct kbase_device *kbdev;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
return scnprintf(buf, PAGE_SIZE, "%i\n",
atomic_read(&kbdev->js_data.soft_job_timeout_ms));
}
static DEVICE_ATTR(soft_job_timeout, S_IRUGO | S_IWUSR,
show_soft_job_timeout, set_soft_job_timeout);
static u32 timeout_ms_to_ticks(struct kbase_device *kbdev, long timeout_ms,
int default_ticks, u32 old_ticks)
{
if (timeout_ms > 0) {
u64 ticks = timeout_ms * 1000000ULL;
do_div(ticks, kbdev->js_data.scheduling_period_ns);
if (!ticks)
return 1;
return ticks;
} else if (timeout_ms < 0) {
return default_ticks;
} else {
return old_ticks;
}
}
/**
* set_js_timeouts - Store callback for the js_timeouts sysfs file.
*
* This function is called to get the contents of the js_timeouts sysfs
* file. This file contains five values separated by whitespace. The values
* are basically the same as %JS_SOFT_STOP_TICKS, %JS_HARD_STOP_TICKS_SS,
* %JS_HARD_STOP_TICKS_DUMPING, %JS_RESET_TICKS_SS, %JS_RESET_TICKS_DUMPING
* configuration values (in that order), with the difference that the js_timeout
* values are expressed in MILLISECONDS.
*
* The js_timeouts sysfile file allows the current values in
* use by the job scheduler to get override. Note that a value needs to
* be other than 0 for it to override the current job scheduler value.
*
* @dev: The device with sysfs file is for
* @attr: The attributes of the sysfs file
* @buf: The value written to the sysfs file
* @count: The number of bytes written to the sysfs file
*
* Return: @count if the function succeeded. An error code on failure.
*/
static ssize_t set_js_timeouts(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct kbase_device *kbdev;
int items;
long js_soft_stop_ms;
long js_soft_stop_ms_cl;
long js_hard_stop_ms_ss;
long js_hard_stop_ms_cl;
long js_hard_stop_ms_dumping;
long js_reset_ms_ss;
long js_reset_ms_cl;
long js_reset_ms_dumping;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
items = sscanf(buf, "%ld %ld %ld %ld %ld %ld %ld %ld",
&js_soft_stop_ms, &js_soft_stop_ms_cl,
&js_hard_stop_ms_ss, &js_hard_stop_ms_cl,
&js_hard_stop_ms_dumping, &js_reset_ms_ss,
&js_reset_ms_cl, &js_reset_ms_dumping);
if (items == 8) {
struct kbasep_js_device_data *js_data = &kbdev->js_data;
unsigned long flags;
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
#define UPDATE_TIMEOUT(ticks_name, ms_name, default) do {\
js_data->ticks_name = timeout_ms_to_ticks(kbdev, ms_name, \
default, js_data->ticks_name); \
dev_dbg(kbdev->dev, "Overriding " #ticks_name \
" with %lu ticks (%lu ms)\n", \
(unsigned long)js_data->ticks_name, \
ms_name); \
} while (0)
UPDATE_TIMEOUT(soft_stop_ticks, js_soft_stop_ms,
DEFAULT_JS_SOFT_STOP_TICKS);
UPDATE_TIMEOUT(soft_stop_ticks_cl, js_soft_stop_ms_cl,
DEFAULT_JS_SOFT_STOP_TICKS_CL);
UPDATE_TIMEOUT(hard_stop_ticks_ss, js_hard_stop_ms_ss,
kbase_hw_has_issue(kbdev, BASE_HW_ISSUE_8408) ?
DEFAULT_JS_HARD_STOP_TICKS_SS_8408 :
DEFAULT_JS_HARD_STOP_TICKS_SS);
UPDATE_TIMEOUT(hard_stop_ticks_cl, js_hard_stop_ms_cl,
DEFAULT_JS_HARD_STOP_TICKS_CL);
UPDATE_TIMEOUT(hard_stop_ticks_dumping,
js_hard_stop_ms_dumping,
DEFAULT_JS_HARD_STOP_TICKS_DUMPING);
UPDATE_TIMEOUT(gpu_reset_ticks_ss, js_reset_ms_ss,
kbase_hw_has_issue(kbdev, BASE_HW_ISSUE_8408) ?
DEFAULT_JS_RESET_TICKS_SS_8408 :
DEFAULT_JS_RESET_TICKS_SS);
UPDATE_TIMEOUT(gpu_reset_ticks_cl, js_reset_ms_cl,
DEFAULT_JS_RESET_TICKS_CL);
UPDATE_TIMEOUT(gpu_reset_ticks_dumping, js_reset_ms_dumping,
DEFAULT_JS_RESET_TICKS_DUMPING);
kbase_js_set_timeouts(kbdev);
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
return count;
}
dev_err(kbdev->dev, "Couldn't process js_timeouts write operation.\n"
"Use format <soft_stop_ms> <soft_stop_ms_cl> <hard_stop_ms_ss> <hard_stop_ms_cl> <hard_stop_ms_dumping> <reset_ms_ss> <reset_ms_cl> <reset_ms_dumping>\n"
"Write 0 for no change, -1 to restore default timeout\n");
return -EINVAL;
}
static unsigned long get_js_timeout_in_ms(
u32 scheduling_period_ns,
u32 ticks)
{
u64 ms = (u64)ticks * scheduling_period_ns;
do_div(ms, 1000000UL);
return ms;
}
/**
* show_js_timeouts - Show callback for the js_timeouts sysfs file.
*
* This function is called to get the contents of the js_timeouts sysfs
* file. It returns the last set values written to the js_timeouts sysfs file.
* If the file didn't get written yet, the values will be current setting in
* use.
* @dev: The device this sysfs file is for
* @attr: The attributes of the sysfs file
* @buf: The output buffer for the sysfs file contents
*
* Return: The number of bytes output to @buf.
*/
static ssize_t show_js_timeouts(struct device *dev, struct device_attribute *attr, char * const buf)
{
struct kbase_device *kbdev;
ssize_t ret;
unsigned long js_soft_stop_ms;
unsigned long js_soft_stop_ms_cl;
unsigned long js_hard_stop_ms_ss;
unsigned long js_hard_stop_ms_cl;
unsigned long js_hard_stop_ms_dumping;
unsigned long js_reset_ms_ss;
unsigned long js_reset_ms_cl;
unsigned long js_reset_ms_dumping;
u32 scheduling_period_ns;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
scheduling_period_ns = kbdev->js_data.scheduling_period_ns;
#define GET_TIMEOUT(name) get_js_timeout_in_ms(\
scheduling_period_ns, \
kbdev->js_data.name)
js_soft_stop_ms = GET_TIMEOUT(soft_stop_ticks);
js_soft_stop_ms_cl = GET_TIMEOUT(soft_stop_ticks_cl);
js_hard_stop_ms_ss = GET_TIMEOUT(hard_stop_ticks_ss);
js_hard_stop_ms_cl = GET_TIMEOUT(hard_stop_ticks_cl);
js_hard_stop_ms_dumping = GET_TIMEOUT(hard_stop_ticks_dumping);
js_reset_ms_ss = GET_TIMEOUT(gpu_reset_ticks_ss);
js_reset_ms_cl = GET_TIMEOUT(gpu_reset_ticks_cl);
js_reset_ms_dumping = GET_TIMEOUT(gpu_reset_ticks_dumping);
#undef GET_TIMEOUT
ret = scnprintf(buf, PAGE_SIZE, "%lu %lu %lu %lu %lu %lu %lu %lu\n",
js_soft_stop_ms, js_soft_stop_ms_cl,
js_hard_stop_ms_ss, js_hard_stop_ms_cl,
js_hard_stop_ms_dumping, js_reset_ms_ss,
js_reset_ms_cl, js_reset_ms_dumping);
if (ret >= PAGE_SIZE) {
buf[PAGE_SIZE - 2] = '\n';
buf[PAGE_SIZE - 1] = '\0';
ret = PAGE_SIZE - 1;
}
return ret;
}
/*
* The sysfs file js_timeouts.
*
* This is used to override the current job scheduler values for
* JS_STOP_STOP_TICKS_SS
* JS_STOP_STOP_TICKS_CL
* JS_HARD_STOP_TICKS_SS
* JS_HARD_STOP_TICKS_CL
* JS_HARD_STOP_TICKS_DUMPING
* JS_RESET_TICKS_SS
* JS_RESET_TICKS_CL
* JS_RESET_TICKS_DUMPING.
*/
static DEVICE_ATTR(js_timeouts, S_IRUGO | S_IWUSR, show_js_timeouts, set_js_timeouts);
static u32 get_new_js_timeout(
u32 old_period,
u32 old_ticks,
u32 new_scheduling_period_ns)
{
u64 ticks = (u64)old_period * (u64)old_ticks;
do_div(ticks, new_scheduling_period_ns);
return ticks?ticks:1;
}
/**
* set_js_scheduling_period - Store callback for the js_scheduling_period sysfs
* file
* @dev: The device the sysfs file is for
* @attr: The attributes of the sysfs file
* @buf: The value written to the sysfs file
* @count: The number of bytes written to the sysfs file
*
* This function is called when the js_scheduling_period sysfs file is written
* to. It checks the data written, and if valid updates the js_scheduling_period
* value
*
* Return: @count if the function succeeded. An error code on failure.
*/
static ssize_t set_js_scheduling_period(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct kbase_device *kbdev;
int ret;
unsigned int js_scheduling_period;
u32 new_scheduling_period_ns;
u32 old_period;
struct kbasep_js_device_data *js_data;
unsigned long flags;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
js_data = &kbdev->js_data;
ret = kstrtouint(buf, 0, &js_scheduling_period);
if (ret || !js_scheduling_period) {
dev_err(kbdev->dev, "Couldn't process js_scheduling_period write operation.\n"
"Use format <js_scheduling_period_ms>\n");
return -EINVAL;
}
new_scheduling_period_ns = js_scheduling_period * 1000000;
/* Update scheduling timeouts */
mutex_lock(&js_data->runpool_mutex);
spin_lock_irqsave(&kbdev->hwaccess_lock, flags);
/* If no contexts have been scheduled since js_timeouts was last written
* to, the new timeouts might not have been latched yet. So check if an
* update is pending and use the new values if necessary. */
/* Use previous 'new' scheduling period as a base if present. */
old_period = js_data->scheduling_period_ns;
#define SET_TIMEOUT(name) \
(js_data->name = get_new_js_timeout(\
old_period, \
kbdev->js_data.name, \
new_scheduling_period_ns))
SET_TIMEOUT(soft_stop_ticks);
SET_TIMEOUT(soft_stop_ticks_cl);
SET_TIMEOUT(hard_stop_ticks_ss);
SET_TIMEOUT(hard_stop_ticks_cl);
SET_TIMEOUT(hard_stop_ticks_dumping);
SET_TIMEOUT(gpu_reset_ticks_ss);
SET_TIMEOUT(gpu_reset_ticks_cl);
SET_TIMEOUT(gpu_reset_ticks_dumping);
#undef SET_TIMEOUT
js_data->scheduling_period_ns = new_scheduling_period_ns;
kbase_js_set_timeouts(kbdev);
spin_unlock_irqrestore(&kbdev->hwaccess_lock, flags);
mutex_unlock(&js_data->runpool_mutex);
dev_dbg(kbdev->dev, "JS scheduling period: %dms\n",
js_scheduling_period);
return count;
}
/**
* show_js_scheduling_period - Show callback for the js_scheduling_period sysfs
* entry.
* @dev: The device this sysfs file is for.
* @attr: The attributes of the sysfs file.
* @buf: The output buffer to receive the GPU information.
*
* This function is called to get the current period used for the JS scheduling
* period.
*
* Return: The number of bytes output to @buf.
*/
static ssize_t show_js_scheduling_period(struct device *dev,
struct device_attribute *attr, char * const buf)
{
struct kbase_device *kbdev;
u32 period;
ssize_t ret;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
period = kbdev->js_data.scheduling_period_ns;
ret = scnprintf(buf, PAGE_SIZE, "%d\n",
period / 1000000);
return ret;
}
static DEVICE_ATTR(js_scheduling_period, S_IRUGO | S_IWUSR,
show_js_scheduling_period, set_js_scheduling_period);
#if !MALI_CUSTOMER_RELEASE
/**
* set_force_replay - Store callback for the force_replay sysfs file.
*
* @dev: The device with sysfs file is for
* @attr: The attributes of the sysfs file
* @buf: The value written to the sysfs file
* @count: The number of bytes written to the sysfs file
*
* Return: @count if the function succeeded. An error code on failure.
*/
static ssize_t set_force_replay(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct kbase_device *kbdev;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
if (!strncmp("limit=", buf, MIN(6, count))) {
int force_replay_limit;
int items = sscanf(buf, "limit=%u", &force_replay_limit);
if (items == 1) {
kbdev->force_replay_random = false;
kbdev->force_replay_limit = force_replay_limit;
kbdev->force_replay_count = 0;
return count;
}
} else if (!strncmp("random_limit", buf, MIN(12, count))) {
kbdev->force_replay_random = true;
kbdev->force_replay_count = 0;
return count;
} else if (!strncmp("norandom_limit", buf, MIN(14, count))) {
kbdev->force_replay_random = false;
kbdev->force_replay_limit = KBASEP_FORCE_REPLAY_DISABLED;
kbdev->force_replay_count = 0;
return count;
} else if (!strncmp("core_req=", buf, MIN(9, count))) {
unsigned int core_req;
int items = sscanf(buf, "core_req=%x", &core_req);
if (items == 1) {
kbdev->force_replay_core_req = (base_jd_core_req)core_req;
return count;
}
}
dev_err(kbdev->dev, "Couldn't process force_replay write operation.\nPossible settings: limit=<limit>, random_limit, norandom_limit, core_req=<core_req>\n");
return -EINVAL;
}
/**
* show_force_replay - Show callback for the force_replay sysfs file.
*
* This function is called to get the contents of the force_replay sysfs
* file. It returns the last set value written to the force_replay sysfs file.
* If the file didn't get written yet, the values will be 0.
*
* @dev: The device this sysfs file is for
* @attr: The attributes of the sysfs file
* @buf: The output buffer for the sysfs file contents
*
* Return: The number of bytes output to @buf.
*/
static ssize_t show_force_replay(struct device *dev,
struct device_attribute *attr, char * const buf)
{
struct kbase_device *kbdev;
ssize_t ret;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
if (kbdev->force_replay_random)
ret = scnprintf(buf, PAGE_SIZE,
"limit=0\nrandom_limit\ncore_req=%x\n",
kbdev->force_replay_core_req);
else
ret = scnprintf(buf, PAGE_SIZE,
"limit=%u\nnorandom_limit\ncore_req=%x\n",
kbdev->force_replay_limit,
kbdev->force_replay_core_req);
if (ret >= PAGE_SIZE) {
buf[PAGE_SIZE - 2] = '\n';
buf[PAGE_SIZE - 1] = '\0';
ret = PAGE_SIZE - 1;
}
return ret;
}
/*
* The sysfs file force_replay.
*/
static DEVICE_ATTR(force_replay, S_IRUGO | S_IWUSR, show_force_replay,
set_force_replay);
#endif /* !MALI_CUSTOMER_RELEASE */
#ifdef CONFIG_MALI_DEBUG
static ssize_t set_js_softstop_always(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct kbase_device *kbdev;
int ret;
int softstop_always;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
ret = kstrtoint(buf, 0, &softstop_always);
if (ret || ((softstop_always != 0) && (softstop_always != 1))) {
dev_err(kbdev->dev, "Couldn't process js_softstop_always write operation.\n"
"Use format <soft_stop_always>\n");
return -EINVAL;
}
kbdev->js_data.softstop_always = (bool) softstop_always;
dev_dbg(kbdev->dev, "Support for softstop on a single context: %s\n",
(kbdev->js_data.softstop_always) ?
"Enabled" : "Disabled");
return count;
}
static ssize_t show_js_softstop_always(struct device *dev,
struct device_attribute *attr, char * const buf)
{
struct kbase_device *kbdev;
ssize_t ret;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
ret = scnprintf(buf, PAGE_SIZE, "%d\n", kbdev->js_data.softstop_always);
if (ret >= PAGE_SIZE) {
buf[PAGE_SIZE - 2] = '\n';
buf[PAGE_SIZE - 1] = '\0';
ret = PAGE_SIZE - 1;
}
return ret;
}
/*
* By default, soft-stops are disabled when only a single context is present.
* The ability to enable soft-stop when only a single context is present can be
* used for debug and unit-testing purposes.
* (see CL t6xx_stress_1 unit-test as an example whereby this feature is used.)
*/
static DEVICE_ATTR(js_softstop_always, S_IRUGO | S_IWUSR, show_js_softstop_always, set_js_softstop_always);
#endif /* CONFIG_MALI_DEBUG */
#ifdef CONFIG_MALI_DEBUG
typedef void (kbasep_debug_command_func) (struct kbase_device *);
enum kbasep_debug_command_code {
KBASEP_DEBUG_COMMAND_DUMPTRACE,
/* This must be the last enum */
KBASEP_DEBUG_COMMAND_COUNT
};
struct kbasep_debug_command {
char *str;
kbasep_debug_command_func *func;
};
/* Debug commands supported by the driver */
static const struct kbasep_debug_command debug_commands[] = {
{
.str = "dumptrace",
.func = &kbasep_trace_dump,
}
};
/**
* show_debug - Show callback for the debug_command sysfs file.
*
* This function is called to get the contents of the debug_command sysfs
* file. This is a list of the available debug commands, separated by newlines.
*
* @dev: The device this sysfs file is for
* @attr: The attributes of the sysfs file
* @buf: The output buffer for the sysfs file contents
*
* Return: The number of bytes output to @buf.
*/
static ssize_t show_debug(struct device *dev, struct device_attribute *attr, char * const buf)
{
struct kbase_device *kbdev;
int i;
ssize_t ret = 0;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
for (i = 0; i < KBASEP_DEBUG_COMMAND_COUNT && ret < PAGE_SIZE; i++)
ret += scnprintf(buf + ret, PAGE_SIZE - ret, "%s\n", debug_commands[i].str);
if (ret >= PAGE_SIZE) {
buf[PAGE_SIZE - 2] = '\n';
buf[PAGE_SIZE - 1] = '\0';
ret = PAGE_SIZE - 1;
}
return ret;
}
/**
* issue_debug - Store callback for the debug_command sysfs file.
*
* This function is called when the debug_command sysfs file is written to.
* It matches the requested command against the available commands, and if
* a matching command is found calls the associated function from
* @debug_commands to issue the command.
*
* @dev: The device with sysfs file is for
* @attr: The attributes of the sysfs file
* @buf: The value written to the sysfs file
* @count: The number of bytes written to the sysfs file
*
* Return: @count if the function succeeded. An error code on failure.
*/
static ssize_t issue_debug(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct kbase_device *kbdev;
int i;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
for (i = 0; i < KBASEP_DEBUG_COMMAND_COUNT; i++) {
if (sysfs_streq(debug_commands[i].str, buf)) {
debug_commands[i].func(kbdev);
return count;
}
}
/* Debug Command not found */
dev_err(dev, "debug_command: command not known\n");
return -EINVAL;
}
/* The sysfs file debug_command.
*
* This is used to issue general debug commands to the device driver.
* Reading it will produce a list of debug commands, separated by newlines.
* Writing to it with one of those commands will issue said command.
*/
static DEVICE_ATTR(debug_command, S_IRUGO | S_IWUSR, show_debug, issue_debug);
#endif /* CONFIG_MALI_DEBUG */
/**
* kbase_show_gpuinfo - Show callback for the gpuinfo sysfs entry.
* @dev: The device this sysfs file is for.
* @attr: The attributes of the sysfs file.
* @buf: The output buffer to receive the GPU information.
*
* This function is called to get a description of the present Mali
* GPU via the gpuinfo sysfs entry. This includes the GPU family, the
* number of cores, the hardware version and the raw product id. For
* example
*
* Mali-T60x MP4 r0p0 0x6956
*
* Return: The number of bytes output to @buf.
*/
static ssize_t kbase_show_gpuinfo(struct device *dev,
struct device_attribute *attr, char *buf)
{
static const struct gpu_product_id_name {
unsigned id;
char *name;
} gpu_product_id_names[] = {
{ .id = GPU_ID_PI_T60X, .name = "Mali-T60x" },
{ .id = GPU_ID_PI_T62X, .name = "Mali-T62x" },
{ .id = GPU_ID_PI_T72X, .name = "Mali-T72x" },
{ .id = GPU_ID_PI_T76X, .name = "Mali-T76x" },
{ .id = GPU_ID_PI_T82X, .name = "Mali-T82x" },
{ .id = GPU_ID_PI_T83X, .name = "Mali-T83x" },
{ .id = GPU_ID_PI_T86X, .name = "Mali-T86x" },
{ .id = GPU_ID_PI_TFRX, .name = "Mali-T88x" },
{ .id = GPU_ID2_PRODUCT_TMIX >> GPU_ID_VERSION_PRODUCT_ID_SHIFT,
.name = "Mali-G71" },
{ .id = GPU_ID2_PRODUCT_THEX >> GPU_ID_VERSION_PRODUCT_ID_SHIFT,
.name = "Mali-G72" },
{ .id = GPU_ID2_PRODUCT_TSIX >> GPU_ID_VERSION_PRODUCT_ID_SHIFT,
.name = "Mali-G51" },
{ .id = GPU_ID2_PRODUCT_TNOX >> GPU_ID_VERSION_PRODUCT_ID_SHIFT,
.name = "Mali-TNOx" },
};
const char *product_name = "(Unknown Mali GPU)";
struct kbase_device *kbdev;
u32 gpu_id;
unsigned product_id, product_id_mask;
unsigned i;
bool is_new_format;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
gpu_id = kbdev->gpu_props.props.raw_props.gpu_id;
product_id = gpu_id >> GPU_ID_VERSION_PRODUCT_ID_SHIFT;
is_new_format = GPU_ID_IS_NEW_FORMAT(product_id);
product_id_mask =
(is_new_format ?
GPU_ID2_PRODUCT_MODEL :
GPU_ID_VERSION_PRODUCT_ID) >>
GPU_ID_VERSION_PRODUCT_ID_SHIFT;
for (i = 0; i < ARRAY_SIZE(gpu_product_id_names); ++i) {
const struct gpu_product_id_name *p = &gpu_product_id_names[i];
if ((GPU_ID_IS_NEW_FORMAT(p->id) == is_new_format) &&
(p->id & product_id_mask) ==
(product_id & product_id_mask)) {
product_name = p->name;
break;
}
}
return scnprintf(buf, PAGE_SIZE, "%s %d cores r%dp%d 0x%04X\n",
product_name, kbdev->gpu_props.num_cores,
(gpu_id & GPU_ID_VERSION_MAJOR) >> GPU_ID_VERSION_MAJOR_SHIFT,
(gpu_id & GPU_ID_VERSION_MINOR) >> GPU_ID_VERSION_MINOR_SHIFT,
product_id);
}
static DEVICE_ATTR(gpuinfo, S_IRUGO, kbase_show_gpuinfo, NULL);
/**
* set_dvfs_period - Store callback for the dvfs_period sysfs file.
* @dev: The device with sysfs file is for
* @attr: The attributes of the sysfs file
* @buf: The value written to the sysfs file
* @count: The number of bytes written to the sysfs file
*
* This function is called when the dvfs_period sysfs file is written to. It
* checks the data written, and if valid updates the DVFS period variable,
*
* Return: @count if the function succeeded. An error code on failure.
*/
static ssize_t set_dvfs_period(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct kbase_device *kbdev;
int ret;
int dvfs_period;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
ret = kstrtoint(buf, 0, &dvfs_period);
if (ret || dvfs_period <= 0) {
dev_err(kbdev->dev, "Couldn't process dvfs_period write operation.\n"
"Use format <dvfs_period_ms>\n");
return -EINVAL;
}
kbdev->pm.dvfs_period = dvfs_period;
dev_dbg(kbdev->dev, "DVFS period: %dms\n", dvfs_period);
return count;
}
/**
* show_dvfs_period - Show callback for the dvfs_period sysfs entry.
* @dev: The device this sysfs file is for.
* @attr: The attributes of the sysfs file.
* @buf: The output buffer to receive the GPU information.
*
* This function is called to get the current period used for the DVFS sample
* timer.
*
* Return: The number of bytes output to @buf.
*/
static ssize_t show_dvfs_period(struct device *dev,
struct device_attribute *attr, char * const buf)
{
struct kbase_device *kbdev;
ssize_t ret;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
ret = scnprintf(buf, PAGE_SIZE, "%d\n", kbdev->pm.dvfs_period);
return ret;
}
static DEVICE_ATTR(dvfs_period, S_IRUGO | S_IWUSR, show_dvfs_period,
set_dvfs_period);
/**
* set_pm_poweroff - Store callback for the pm_poweroff sysfs file.
* @dev: The device with sysfs file is for
* @attr: The attributes of the sysfs file
* @buf: The value written to the sysfs file
* @count: The number of bytes written to the sysfs file
*
* This function is called when the pm_poweroff sysfs file is written to.
*
* This file contains three values separated by whitespace. The values
* are gpu_poweroff_time (the period of the poweroff timer, in ns),
* poweroff_shader_ticks (the number of poweroff timer ticks before an idle
* shader is powered off), and poweroff_gpu_ticks (the number of poweroff timer
* ticks before the GPU is powered off), in that order.
*
* Return: @count if the function succeeded. An error code on failure.
*/
static ssize_t set_pm_poweroff(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct kbase_device *kbdev;
int items;
s64 gpu_poweroff_time;
int poweroff_shader_ticks, poweroff_gpu_ticks;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
items = sscanf(buf, "%llu %u %u", &gpu_poweroff_time,
&poweroff_shader_ticks,
&poweroff_gpu_ticks);
if (items != 3) {
dev_err(kbdev->dev, "Couldn't process pm_poweroff write operation.\n"
"Use format <gpu_poweroff_time_ns> <poweroff_shader_ticks> <poweroff_gpu_ticks>\n");
return -EINVAL;
}
kbdev->pm.gpu_poweroff_time = HR_TIMER_DELAY_NSEC(gpu_poweroff_time);
kbdev->pm.poweroff_shader_ticks = poweroff_shader_ticks;
kbdev->pm.poweroff_gpu_ticks = poweroff_gpu_ticks;
return count;
}
/**
* show_pm_poweroff - Show callback for the pm_poweroff sysfs entry.
* @dev: The device this sysfs file is for.
* @attr: The attributes of the sysfs file.
* @buf: The output buffer to receive the GPU information.
*
* This function is called to get the current period used for the DVFS sample
* timer.
*
* Return: The number of bytes output to @buf.
*/
static ssize_t show_pm_poweroff(struct device *dev,
struct device_attribute *attr, char * const buf)
{
struct kbase_device *kbdev;
ssize_t ret;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
ret = scnprintf(buf, PAGE_SIZE, "%llu %u %u\n",
ktime_to_ns(kbdev->pm.gpu_poweroff_time),
kbdev->pm.poweroff_shader_ticks,
kbdev->pm.poweroff_gpu_ticks);
return ret;
}
static DEVICE_ATTR(pm_poweroff, S_IRUGO | S_IWUSR, show_pm_poweroff,
set_pm_poweroff);
/**
* set_reset_timeout - Store callback for the reset_timeout sysfs file.
* @dev: The device with sysfs file is for
* @attr: The attributes of the sysfs file
* @buf: The value written to the sysfs file
* @count: The number of bytes written to the sysfs file
*
* This function is called when the reset_timeout sysfs file is written to. It
* checks the data written, and if valid updates the reset timeout.
*
* Return: @count if the function succeeded. An error code on failure.
*/
static ssize_t set_reset_timeout(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct kbase_device *kbdev;
int ret;
int reset_timeout;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
ret = kstrtoint(buf, 0, &reset_timeout);
if (ret || reset_timeout <= 0) {
dev_err(kbdev->dev, "Couldn't process reset_timeout write operation.\n"
"Use format <reset_timeout_ms>\n");
return -EINVAL;
}
kbdev->reset_timeout_ms = reset_timeout;
dev_dbg(kbdev->dev, "Reset timeout: %dms\n", reset_timeout);
return count;
}
/**
* show_reset_timeout - Show callback for the reset_timeout sysfs entry.
* @dev: The device this sysfs file is for.
* @attr: The attributes of the sysfs file.
* @buf: The output buffer to receive the GPU information.
*
* This function is called to get the current reset timeout.
*
* Return: The number of bytes output to @buf.
*/
static ssize_t show_reset_timeout(struct device *dev,
struct device_attribute *attr, char * const buf)
{
struct kbase_device *kbdev;
ssize_t ret;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
ret = scnprintf(buf, PAGE_SIZE, "%d\n", kbdev->reset_timeout_ms);
return ret;
}
static DEVICE_ATTR(reset_timeout, S_IRUGO | S_IWUSR, show_reset_timeout,
set_reset_timeout);
static ssize_t show_mem_pool_size(struct device *dev,
struct device_attribute *attr, char * const buf)
{
struct kbase_device *kbdev;
ssize_t ret;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
ret = scnprintf(buf, PAGE_SIZE, "%zu\n",
kbase_mem_pool_size(&kbdev->mem_pool));
return ret;
}
static ssize_t set_mem_pool_size(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct kbase_device *kbdev;
size_t new_size;
int err;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
err = kstrtoul(buf, 0, (unsigned long *)&new_size);
if (err)
return err;
kbase_mem_pool_trim(&kbdev->mem_pool, new_size);
return count;
}
static DEVICE_ATTR(mem_pool_size, S_IRUGO | S_IWUSR, show_mem_pool_size,
set_mem_pool_size);
static ssize_t show_mem_pool_max_size(struct device *dev,
struct device_attribute *attr, char * const buf)
{
struct kbase_device *kbdev;
ssize_t ret;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
ret = scnprintf(buf, PAGE_SIZE, "%zu\n",
kbase_mem_pool_max_size(&kbdev->mem_pool));
return ret;
}
static ssize_t set_mem_pool_max_size(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct kbase_device *kbdev;
size_t new_max_size;
int err;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
err = kstrtoul(buf, 0, (unsigned long *)&new_max_size);
if (err)
return -EINVAL;
kbase_mem_pool_set_max_size(&kbdev->mem_pool, new_max_size);
return count;
}
static DEVICE_ATTR(mem_pool_max_size, S_IRUGO | S_IWUSR, show_mem_pool_max_size,
set_mem_pool_max_size);
/**
* show_lp_mem_pool_size - Show size of the large memory pages pool.
* @dev: The device this sysfs file is for.
* @attr: The attributes of the sysfs file.
* @buf: The output buffer to receive the pool size.
*
* This function is called to get the number of large memory pages which currently populate the kbdev pool.
*
* Return: The number of bytes output to @buf.
*/
static ssize_t show_lp_mem_pool_size(struct device *dev,
struct device_attribute *attr, char * const buf)
{
struct kbase_device *kbdev;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
return scnprintf(buf, PAGE_SIZE, "%zu\n", kbase_mem_pool_size(&kbdev->lp_mem_pool));
}
/**
* set_lp_mem_pool_size - Set size of the large memory pages pool.
* @dev: The device this sysfs file is for.
* @attr: The attributes of the sysfs file.
* @buf: The value written to the sysfs file.
* @count: The number of bytes written to the sysfs file.
*
* This function is called to set the number of large memory pages which should populate the kbdev pool.
* This may cause existing pages to be removed from the pool, or new pages to be created and then added to the pool.
*
* Return: @count if the function succeeded. An error code on failure.
*/
static ssize_t set_lp_mem_pool_size(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct kbase_device *kbdev;
unsigned long new_size;
int err;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
err = kstrtoul(buf, 0, &new_size);
if (err)
return err;
kbase_mem_pool_trim(&kbdev->lp_mem_pool, new_size);
return count;
}
static DEVICE_ATTR(lp_mem_pool_size, S_IRUGO | S_IWUSR, show_lp_mem_pool_size,
set_lp_mem_pool_size);
/**
* show_lp_mem_pool_max_size - Show maximum size of the large memory pages pool.
* @dev: The device this sysfs file is for.
* @attr: The attributes of the sysfs file.
* @buf: The output buffer to receive the pool size.
*
* This function is called to get the maximum number of large memory pages that the kbdev pool can possibly contain.
*
* Return: The number of bytes output to @buf.
*/
static ssize_t show_lp_mem_pool_max_size(struct device *dev,
struct device_attribute *attr, char * const buf)
{
struct kbase_device *kbdev;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
return scnprintf(buf, PAGE_SIZE, "%zu\n", kbase_mem_pool_max_size(&kbdev->lp_mem_pool));
}
/**
* set_lp_mem_pool_max_size - Set maximum size of the large memory pages pool.
* @dev: The device this sysfs file is for.
* @attr: The attributes of the sysfs file.
* @buf: The value written to the sysfs file.
* @count: The number of bytes written to the sysfs file.
*
* This function is called to set the maximum number of large memory pages that the kbdev pool can possibly contain.
*
* Return: @count if the function succeeded. An error code on failure.
*/
static ssize_t set_lp_mem_pool_max_size(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct kbase_device *kbdev;
unsigned long new_max_size;
int err;
kbdev = to_kbase_device(dev);
if (!kbdev)
return -ENODEV;
err = kstrtoul(buf, 0, &new_max_size);
if (err)
return -EINVAL;
kbase_mem_pool_set_max_size(&kbdev->lp_mem_pool, new_max_size);
return count;
}
static DEVICE_ATTR(lp_mem_pool_max_size, S_IRUGO | S_IWUSR, show_lp_mem_pool_max_size,
set_lp_mem_pool_max_size);
#ifdef CONFIG_DEBUG_FS
/* Number of entries in serialize_jobs_settings[] */
#define NR_SERIALIZE_JOBS_SETTINGS 5
/* Maximum string length in serialize_jobs_settings[].name */
#define MAX_SERIALIZE_JOBS_NAME_LEN 16
static struct
{
char *name;
u8 setting;
} serialize_jobs_settings[NR_SERIALIZE_JOBS_SETTINGS] = {
{"none", 0},
{"intra-slot", KBASE_SERIALIZE_INTRA_SLOT},
{"inter-slot", KBASE_SERIALIZE_INTER_SLOT},
{"full", KBASE_SERIALIZE_INTRA_SLOT | KBASE_SERIALIZE_INTER_SLOT},
{"full-reset", KBASE_SERIALIZE_INTRA_SLOT | KBASE_SERIALIZE_INTER_SLOT |
KBASE_SERIALIZE_RESET}
};
/**
* kbasep_serialize_jobs_seq_show - Show callback for the serialize_jobs debugfs
* file
* @sfile: seq_file pointer
* @data: Private callback data
*
* This function is called to get the contents of the serialize_jobs debugfs
* file. This is a list of the available settings with the currently active one
* surrounded by square brackets.
*
* Return: 0 on success, or an error code on error
*/
static int kbasep_serialize_jobs_seq_show(struct seq_file *sfile, void *data)
{
struct kbase_device *kbdev = sfile->private;
int i;
CSTD_UNUSED(data);
for (i = 0; i < NR_SERIALIZE_JOBS_SETTINGS; i++) {
if (kbdev->serialize_jobs == serialize_jobs_settings[i].setting)
seq_printf(sfile, "[%s] ",
serialize_jobs_settings[i].name);
else
seq_printf(sfile, "%s ",
serialize_jobs_settings[i].name);
}
seq_puts(sfile, "\n");
return 0;
}
/**
* kbasep_serialize_jobs_debugfs_write - Store callback for the serialize_jobs
* debugfs file.
* @file: File pointer
* @ubuf: User buffer containing data to store
* @count: Number of bytes in user buffer
* @ppos: File position
*
* This function is called when the serialize_jobs debugfs file is written to.
* It matches the requested setting against the available settings and if a
* matching setting is found updates kbdev->serialize_jobs.
*
* Return: @count if the function succeeded. An error code on failure.
*/
static ssize_t kbasep_serialize_jobs_debugfs_write(struct file *file,
const char __user *ubuf, size_t count, loff_t *ppos)
{
struct seq_file *s = file->private_data;
struct kbase_device *kbdev = s->private;
char buf[MAX_SERIALIZE_JOBS_NAME_LEN];
int i;
bool valid = false;
CSTD_UNUSED(ppos);
count = min_t(size_t, sizeof(buf) - 1, count);
if (copy_from_user(buf, ubuf, count))
return -EFAULT;
buf[count] = 0;
for (i = 0; i < NR_SERIALIZE_JOBS_SETTINGS; i++) {
if (sysfs_streq(serialize_jobs_settings[i].name, buf)) {
kbdev->serialize_jobs =
serialize_jobs_settings[i].setting;
valid = true;
break;
}
}
if (!valid) {
dev_err(kbdev->dev, "serialize_jobs: invalid setting\n");
return -EINVAL;
}
return count;
}
/**
* kbasep_serialize_jobs_debugfs_open - Open callback for the serialize_jobs
* debugfs file
* @in: inode pointer
* @file: file pointer
*
* Return: Zero on success, error code on failure
*/
static int kbasep_serialize_jobs_debugfs_open(struct inode *in,
struct file *file)
{
return single_open(file, kbasep_serialize_jobs_seq_show, in->i_private);
}
static const struct file_operations kbasep_serialize_jobs_debugfs_fops = {
.open = kbasep_serialize_jobs_debugfs_open,
.read = seq_read,
.write = kbasep_serialize_jobs_debugfs_write,
.llseek = seq_lseek,
.release = single_release,
};
#endif /* CONFIG_DEBUG_FS */
static int kbasep_protected_mode_init(struct kbase_device *kbdev)
{
#ifdef CONFIG_OF
struct device_node *protected_node;
struct platform_device *pdev;
struct protected_mode_device *protected_dev;
#endif
if (kbase_hw_has_feature(kbdev, BASE_HW_FEATURE_PROTECTED_MODE)) {
/* Use native protected ops */
kbdev->protected_dev = kzalloc(sizeof(*kbdev->protected_dev),
GFP_KERNEL);
if (!kbdev->protected_dev)
return -ENOMEM;
kbdev->protected_dev->data = kbdev;
kbdev->protected_ops = &kbase_native_protected_ops;
kbdev->protected_mode_support = true;
return 0;
}
kbdev->protected_mode_support = false;
#ifdef CONFIG_OF
protected_node = of_parse_phandle(kbdev->dev->of_node,
"protected-mode-switcher", 0);
if (!protected_node)
protected_node = of_parse_phandle(kbdev->dev->of_node,
"secure-mode-switcher", 0);
if (!protected_node) {
/* If protected_node cannot be looked up then we assume
* protected mode is not supported on this platform. */
dev_info(kbdev->dev, "Protected mode not available\n");
return 0;
}
pdev = of_find_device_by_node(protected_node);
if (!pdev)
return -EINVAL;
protected_dev = platform_get_drvdata(pdev);
if (!protected_dev)
return -EPROBE_DEFER;
kbdev->protected_ops = &protected_dev->ops;
kbdev->protected_dev = protected_dev;
if (kbdev->protected_ops) {
int err;
/* Make sure protected mode is disabled on startup */
mutex_lock(&kbdev->pm.lock);
err = kbdev->protected_ops->protected_mode_disable(
kbdev->protected_dev);
mutex_unlock(&kbdev->pm.lock);
/* protected_mode_disable() returns -EINVAL if not supported */
kbdev->protected_mode_support = (err != -EINVAL);
}
#endif
return 0;
}
static void kbasep_protected_mode_term(struct kbase_device *kbdev)
{
if (kbase_hw_has_feature(kbdev, BASE_HW_FEATURE_PROTECTED_MODE))
kfree(kbdev->protected_dev);
}
#ifdef CONFIG_MALI_NO_MALI
static int kbase_common_reg_map(struct kbase_device *kbdev)
{
return 0;
}
static void kbase_common_reg_unmap(struct kbase_device * const kbdev)
{
}
#else /* CONFIG_MALI_NO_MALI */
static int kbase_common_reg_map(struct kbase_device *kbdev)
{
int err = 0;
if (!request_mem_region(kbdev->reg_start, kbdev->reg_size, dev_name(kbdev->dev))) {
dev_err(kbdev->dev, "Register window unavailable\n");
err = -EIO;
goto out_region;
}
kbdev->reg = ioremap(kbdev->reg_start, kbdev->reg_size);
if (!kbdev->reg) {
dev_err(kbdev->dev, "Can't remap register window\n");
err = -EINVAL;
goto out_ioremap;
}
return err;
out_ioremap:
release_mem_region(kbdev->reg_start, kbdev->reg_size);
out_region:
return err;
}
static void kbase_common_reg_unmap(struct kbase_device * const kbdev)
{
if (kbdev->reg) {
iounmap(kbdev->reg);
release_mem_region(kbdev->reg_start, kbdev->reg_size);
kbdev->reg = NULL;
kbdev->reg_start = 0;
kbdev->reg_size = 0;
}
}
#endif /* CONFIG_MALI_NO_MALI */
static int registers_map(struct kbase_device * const kbdev)
{
/* the first memory resource is the physical address of the GPU
* registers */
struct platform_device *pdev = to_platform_device(kbdev->dev);
struct resource *reg_res;
int err;
reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!reg_res) {
dev_err(kbdev->dev, "Invalid register resource\n");
return -ENOENT;
}
kbdev->reg_start = reg_res->start;
kbdev->reg_size = resource_size(reg_res);
err = kbase_common_reg_map(kbdev);
if (err) {
dev_err(kbdev->dev, "Failed to map registers\n");
return err;
}
return 0;
}
static void registers_unmap(struct kbase_device *kbdev)
{
kbase_common_reg_unmap(kbdev);
}
static int power_control_init(struct platform_device *pdev)
{
struct kbase_device *kbdev = to_kbase_device(&pdev->dev);
int err = 0;
if (!kbdev)
return -ENODEV;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 12, 0)) && defined(CONFIG_OF) \
&& defined(CONFIG_REGULATOR)
kbdev->regulator = regulator_get_optional(kbdev->dev, "mali");
if (IS_ERR_OR_NULL(kbdev->regulator)) {
err = PTR_ERR(kbdev->regulator);
kbdev->regulator = NULL;
if (err == -EPROBE_DEFER) {
dev_err(&pdev->dev, "Failed to get regulator\n");
return err;
}
dev_info(kbdev->dev,
"Continuing without Mali regulator control\n");
/* Allow probe to continue without regulator */
}
#endif /* LINUX_VERSION_CODE >= 3, 12, 0 */
kbdev->clock = clk_get(kbdev->dev, "clk_mali");
if (IS_ERR_OR_NULL(kbdev->clock)) {
err = PTR_ERR(kbdev->clock);
kbdev->clock = NULL;
if (err == -EPROBE_DEFER) {
dev_err(&pdev->dev, "Failed to get clock\n");
goto fail;
}
dev_info(kbdev->dev, "Continuing without Mali clock control\n");
/* Allow probe to continue without clock. */
} else {
err = clk_prepare_enable(kbdev->clock);
if (err) {
dev_err(kbdev->dev,
"Failed to prepare and enable clock (%d)\n",
err);
goto fail;
}
}
#if defined(CONFIG_OF) && defined(CONFIG_PM_OPP)
/* Register the OPPs if they are available in device tree */
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)) \
|| defined(LSK_OPPV2_BACKPORT)
err = dev_pm_opp_of_add_table(kbdev->dev);
#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 7, 0))
err = of_init_opp_table(kbdev->dev);
#else
err = 0;
#endif /* LINUX_VERSION_CODE */
if (err)
dev_dbg(kbdev->dev, "OPP table not found\n");
#endif /* CONFIG_OF && CONFIG_PM_OPP */
return 0;
fail:
if (kbdev->clock != NULL) {
clk_put(kbdev->clock);
kbdev->clock = NULL;
}
#ifdef CONFIG_REGULATOR
if (NULL != kbdev->regulator) {
regulator_put(kbdev->regulator);
kbdev->regulator = NULL;
}
#endif
return err;
}
static void power_control_term(struct kbase_device *kbdev)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0)) || \