blob: 261ef7600c46eef4294c7d9b8914e2c390d51dbe [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
/*
*
* (C) COPYRIGHT 2018-2022 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 license.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you can access it online at
* http://www.gnu.org/licenses/gpl-2.0.html.
*
*/
#include <mali_kbase.h>
#include <tl/mali_kbase_tracepoints.h>
#include <mali_kbase_ctx_sched.h>
#include "device/mali_kbase_device.h"
#include "mali_kbase_csf.h"
#include <linux/export.h>
#if IS_ENABLED(CONFIG_SYNC_FILE)
#include "mali_kbase_fence.h"
#include "mali_kbase_sync.h"
static DEFINE_SPINLOCK(kbase_csf_fence_lock);
#endif
static void kcpu_queue_process(struct kbase_kcpu_command_queue *kcpu_queue,
bool drain_queue);
static void kcpu_queue_process_worker(struct work_struct *data);
static int kbase_kcpu_map_import_prepare(
struct kbase_kcpu_command_queue *kcpu_queue,
struct base_kcpu_command_import_info *import_info,
struct kbase_kcpu_command *current_command)
{
struct kbase_context *const kctx = kcpu_queue->kctx;
struct kbase_va_region *reg;
struct kbase_mem_phy_alloc *alloc;
struct page **pages;
struct tagged_addr *pa;
long i;
int ret = 0;
lockdep_assert_held(&kctx->csf.kcpu_queues.lock);
/* Take the processes mmap lock */
down_read(kbase_mem_get_process_mmap_lock());
kbase_gpu_vm_lock(kctx);
reg = kbase_region_tracker_find_region_enclosing_address(kctx,
import_info->handle);
if (kbase_is_region_invalid_or_free(reg) ||
!kbase_mem_is_imported(reg->gpu_alloc->type)) {
ret = -EINVAL;
goto out;
}
if (reg->gpu_alloc->type == KBASE_MEM_TYPE_IMPORTED_USER_BUF) {
/* Pin the physical pages backing the user buffer while
* we are in the process context and holding the mmap lock.
* The dma mapping & GPU mapping of the pages would be done
* when the MAP_IMPORT operation is executed.
*
* Though the pages would be pinned, no reference is taken
* on the physical pages tracking object. When the last
* reference to the tracking object is dropped the pages
* would be unpinned if they weren't unpinned before.
*/
ret = kbase_jd_user_buf_pin_pages(kctx, reg);
if (ret)
goto out;
alloc = reg->gpu_alloc;
pa = kbase_get_gpu_phy_pages(reg);
pages = alloc->imported.user_buf.pages;
for (i = 0; i < alloc->nents; i++)
pa[i] = as_tagged(page_to_phys(pages[i]));
}
current_command->type = BASE_KCPU_COMMAND_TYPE_MAP_IMPORT;
current_command->info.import.gpu_va = import_info->handle;
out:
kbase_gpu_vm_unlock(kctx);
/* Release the processes mmap lock */
up_read(kbase_mem_get_process_mmap_lock());
return ret;
}
static int kbase_kcpu_unmap_import_prepare_internal(
struct kbase_kcpu_command_queue *kcpu_queue,
struct base_kcpu_command_import_info *import_info,
struct kbase_kcpu_command *current_command,
enum base_kcpu_command_type type)
{
struct kbase_context *const kctx = kcpu_queue->kctx;
struct kbase_va_region *reg;
int ret = 0;
lockdep_assert_held(&kctx->csf.kcpu_queues.lock);
kbase_gpu_vm_lock(kctx);
reg = kbase_region_tracker_find_region_enclosing_address(kctx,
import_info->handle);
if (kbase_is_region_invalid_or_free(reg) ||
!kbase_mem_is_imported(reg->gpu_alloc->type)) {
ret = -EINVAL;
goto out;
}
if (reg->gpu_alloc->type == KBASE_MEM_TYPE_IMPORTED_USER_BUF) {
/* The pages should have been pinned when MAP_IMPORT
* was enqueued previously.
*/
if (reg->gpu_alloc->nents !=
reg->gpu_alloc->imported.user_buf.nr_pages) {
ret = -EINVAL;
goto out;
}
}
current_command->type = type;
current_command->info.import.gpu_va = import_info->handle;
out:
kbase_gpu_vm_unlock(kctx);
return ret;
}
static int kbase_kcpu_unmap_import_prepare(
struct kbase_kcpu_command_queue *kcpu_queue,
struct base_kcpu_command_import_info *import_info,
struct kbase_kcpu_command *current_command)
{
return kbase_kcpu_unmap_import_prepare_internal(kcpu_queue,
import_info, current_command,
BASE_KCPU_COMMAND_TYPE_UNMAP_IMPORT);
}
static int kbase_kcpu_unmap_import_force_prepare(
struct kbase_kcpu_command_queue *kcpu_queue,
struct base_kcpu_command_import_info *import_info,
struct kbase_kcpu_command *current_command)
{
return kbase_kcpu_unmap_import_prepare_internal(kcpu_queue,
import_info, current_command,
BASE_KCPU_COMMAND_TYPE_UNMAP_IMPORT_FORCE);
}
/**
* kbase_jit_add_to_pending_alloc_list() - Pend JIT allocation
*
* @queue: The queue containing this JIT allocation
* @cmd: The JIT allocation that is blocking this queue
*/
static void kbase_jit_add_to_pending_alloc_list(
struct kbase_kcpu_command_queue *queue,
struct kbase_kcpu_command *cmd)
{
struct kbase_context *const kctx = queue->kctx;
struct list_head *target_list_head =
&kctx->csf.kcpu_queues.jit_blocked_queues;
struct kbase_kcpu_command_queue *blocked_queue;
lockdep_assert_held(&kctx->csf.kcpu_queues.lock);
list_for_each_entry(blocked_queue,
&kctx->csf.kcpu_queues.jit_blocked_queues,
jit_blocked) {
struct kbase_kcpu_command const *const jit_alloc_cmd =
&blocked_queue->commands[blocked_queue->start_offset];
WARN_ON(jit_alloc_cmd->type != BASE_KCPU_COMMAND_TYPE_JIT_ALLOC);
if (cmd->enqueue_ts < jit_alloc_cmd->enqueue_ts) {
target_list_head = &blocked_queue->jit_blocked;
break;
}
}
list_add_tail(&queue->jit_blocked, target_list_head);
}
/**
* kbase_kcpu_jit_allocate_process() - Process JIT allocation
*
* @queue: The queue containing this JIT allocation
* @cmd: The JIT allocation command
*
* Return:
* * 0 - allocation OK
* * -EINVAL - missing info or JIT ID still in use
* * -EAGAIN - Retry
* * -ENOMEM - no memory. unable to allocate
*/
static int kbase_kcpu_jit_allocate_process(
struct kbase_kcpu_command_queue *queue,
struct kbase_kcpu_command *cmd)
{
struct kbase_context *const kctx = queue->kctx;
struct kbase_kcpu_command_jit_alloc_info *alloc_info =
&cmd->info.jit_alloc;
struct base_jit_alloc_info *info = alloc_info->info;
struct kbase_vmap_struct mapping;
struct kbase_va_region *reg;
u32 count = alloc_info->count;
u64 *ptr, new_addr;
u32 i;
int ret;
lockdep_assert_held(&kctx->csf.kcpu_queues.lock);
if (alloc_info->blocked) {
list_del(&queue->jit_blocked);
alloc_info->blocked = false;
}
if (WARN_ON(!info))
return -EINVAL;
/* Check if all JIT IDs are not in use */
for (i = 0; i < count; i++, info++) {
/* The JIT ID is still in use so fail the allocation */
if (kctx->jit_alloc[info->id]) {
dev_dbg(kctx->kbdev->dev, "JIT ID still in use");
return -EINVAL;
}
}
/* Now start the allocation loop */
for (i = 0, info = alloc_info->info; i < count; i++, info++) {
/* Create a JIT allocation */
reg = kbase_jit_allocate(kctx, info, true);
if (!reg) {
bool can_block = false;
struct kbase_kcpu_command const *jit_cmd;
list_for_each_entry(jit_cmd, &kctx->csf.kcpu_queues.jit_cmds_head, info.jit_alloc.node) {
if (jit_cmd == cmd)
break;
if (jit_cmd->type == BASE_KCPU_COMMAND_TYPE_JIT_FREE) {
u8 const *const free_ids = jit_cmd->info.jit_free.ids;
if (free_ids && *free_ids && kctx->jit_alloc[*free_ids]) {
/*
* A JIT free which is active
* and submitted before this
* command.
*/
can_block = true;
break;
}
}
}
if (!can_block) {
/*
* No prior JIT_FREE command is active. Roll
* back previous allocations and fail.
*/
dev_warn_ratelimited(kctx->kbdev->dev, "JIT alloc command failed: %pK\n", cmd);
ret = -ENOMEM;
goto fail;
}
/* There are pending frees for an active allocation
* so we should wait to see whether they free the
* memory. Add to the list of atoms for which JIT
* allocation is pending.
*/
kbase_jit_add_to_pending_alloc_list(queue, cmd);
alloc_info->blocked = true;
/* Rollback, the whole set will be re-attempted */
while (i-- > 0) {
info--;
kbase_jit_free(kctx, kctx->jit_alloc[info->id]);
kctx->jit_alloc[info->id] = NULL;
}
return -EAGAIN;
}
/* Bind it to the user provided ID. */
kctx->jit_alloc[info->id] = reg;
}
for (i = 0, info = alloc_info->info; i < count; i++, info++) {
/*
* Write the address of the JIT allocation to the user provided
* GPU allocation.
*/
ptr = kbase_vmap_prot(kctx, info->gpu_alloc_addr, sizeof(*ptr),
KBASE_REG_CPU_WR, &mapping);
if (!ptr) {
ret = -ENOMEM;
goto fail;
}
reg = kctx->jit_alloc[info->id];
new_addr = reg->start_pfn << PAGE_SHIFT;
*ptr = new_addr;
kbase_vunmap(kctx, &mapping);
}
return 0;
fail:
/* Roll back completely */
for (i = 0, info = alloc_info->info; i < count; i++, info++) {
/* Free the allocations that were successful.
* Mark all the allocations including the failed one and the
* other un-attempted allocations in the set, so we know they
* are in use.
*/
if (kctx->jit_alloc[info->id])
kbase_jit_free(kctx, kctx->jit_alloc[info->id]);
kctx->jit_alloc[info->id] = KBASE_RESERVED_REG_JIT_ALLOC;
}
return ret;
}
static int kbase_kcpu_jit_allocate_prepare(
struct kbase_kcpu_command_queue *kcpu_queue,
struct base_kcpu_command_jit_alloc_info *alloc_info,
struct kbase_kcpu_command *current_command)
{
struct kbase_context *const kctx = kcpu_queue->kctx;
void __user *data = u64_to_user_ptr(alloc_info->info);
struct base_jit_alloc_info *info;
u32 count = alloc_info->count;
int ret = 0;
u32 i;
lockdep_assert_held(&kctx->csf.kcpu_queues.lock);
if (!data || count > kcpu_queue->kctx->jit_max_allocations ||
count > ARRAY_SIZE(kctx->jit_alloc)) {
ret = -EINVAL;
goto out;
}
info = kmalloc_array(count, sizeof(*info), GFP_KERNEL);
if (!info) {
ret = -ENOMEM;
goto out;
}
if (copy_from_user(info, data, sizeof(*info) * count) != 0) {
ret = -EINVAL;
goto out_free;
}
for (i = 0; i < count; i++) {
ret = kbasep_jit_alloc_validate(kctx, &info[i]);
if (ret)
goto out_free;
}
/* Search for duplicate JIT ids */
for (i = 0; i < (count - 1); i++) {
u32 j;
for (j = (i + 1); j < count; j++) {
if (info[i].id == info[j].id) {
ret = -EINVAL;
goto out_free;
}
}
}
current_command->type = BASE_KCPU_COMMAND_TYPE_JIT_ALLOC;
list_add_tail(&current_command->info.jit_alloc.node,
&kctx->csf.kcpu_queues.jit_cmds_head);
current_command->info.jit_alloc.info = info;
current_command->info.jit_alloc.count = count;
current_command->info.jit_alloc.blocked = false;
return 0;
out_free:
kfree(info);
out:
return ret;
}
/**
* kbase_kcpu_jit_allocate_finish() - Finish handling the JIT_ALLOC command
*
* @queue: The queue containing this JIT allocation
* @cmd: The JIT allocation command
*/
static void kbase_kcpu_jit_allocate_finish(
struct kbase_kcpu_command_queue *queue,
struct kbase_kcpu_command *cmd)
{
lockdep_assert_held(&queue->kctx->csf.kcpu_queues.lock);
/* Remove this command from the jit_cmds_head list */
list_del(&cmd->info.jit_alloc.node);
/*
* If we get to this point we must have already cleared the blocked
* flag, otherwise it'd be a bug.
*/
if (WARN_ON(cmd->info.jit_alloc.blocked)) {
list_del(&queue->jit_blocked);
cmd->info.jit_alloc.blocked = false;
}
kfree(cmd->info.jit_alloc.info);
}
/**
* kbase_kcpu_jit_retry_pending_allocs() - Retry blocked JIT_ALLOC commands
*
* @kctx: The context containing the blocked JIT_ALLOC commands
*/
static void kbase_kcpu_jit_retry_pending_allocs(struct kbase_context *kctx)
{
struct kbase_kcpu_command_queue *blocked_queue;
lockdep_assert_held(&kctx->csf.kcpu_queues.lock);
/*
* Reschedule all queues blocked by JIT_ALLOC commands.
* NOTE: This code traverses the list of blocked queues directly. It
* only works as long as the queued works are not executed at the same
* time. This precondition is true since we're holding the
* kbase_csf_kcpu_queue_context.lock .
*/
list_for_each_entry(blocked_queue,
&kctx->csf.kcpu_queues.jit_blocked_queues, jit_blocked)
queue_work(kctx->csf.kcpu_queues.wq, &blocked_queue->work);
}
static int kbase_kcpu_jit_free_process(struct kbase_kcpu_command_queue *queue,
struct kbase_kcpu_command *const cmd)
{
struct kbase_kcpu_command_jit_free_info const *const free_info =
&cmd->info.jit_free;
u8 const *const ids = free_info->ids;
u32 const count = free_info->count;
u32 i;
int rc = 0;
struct kbase_context *kctx = queue->kctx;
if (WARN_ON(!ids))
return -EINVAL;
lockdep_assert_held(&kctx->csf.kcpu_queues.lock);
KBASE_TLSTREAM_TL_KBASE_ARRAY_BEGIN_KCPUQUEUE_EXECUTE_JIT_FREE_END(queue->kctx->kbdev,
queue);
for (i = 0; i < count; i++) {
u64 pages_used = 0;
int item_err = 0;
if (!kctx->jit_alloc[ids[i]]) {
dev_dbg(kctx->kbdev->dev, "invalid JIT free ID");
rc = -EINVAL;
item_err = rc;
} else {
struct kbase_va_region *const reg = kctx->jit_alloc[ids[i]];
/*
* If the ID is valid but the allocation request failed, still
* succeed this command but don't try and free the allocation.
*/
if (reg != KBASE_RESERVED_REG_JIT_ALLOC) {
pages_used = reg->gpu_alloc->nents;
kbase_jit_free(kctx, reg);
}
kctx->jit_alloc[ids[i]] = NULL;
}
KBASE_TLSTREAM_TL_KBASE_ARRAY_ITEM_KCPUQUEUE_EXECUTE_JIT_FREE_END(
queue->kctx->kbdev, queue, item_err, pages_used);
}
/* Free the list of ids */
kfree(ids);
/*
* Remove this command from the jit_cmds_head list and retry pending
* allocations.
*/
list_del(&cmd->info.jit_free.node);
kbase_kcpu_jit_retry_pending_allocs(kctx);
return rc;
}
static int kbase_kcpu_jit_free_prepare(
struct kbase_kcpu_command_queue *kcpu_queue,
struct base_kcpu_command_jit_free_info *free_info,
struct kbase_kcpu_command *current_command)
{
struct kbase_context *const kctx = kcpu_queue->kctx;
void __user *data = u64_to_user_ptr(free_info->ids);
u8 *ids;
u32 count = free_info->count;
int ret;
u32 i;
lockdep_assert_held(&kctx->csf.kcpu_queues.lock);
/* Sanity checks */
if (!count || count > ARRAY_SIZE(kctx->jit_alloc)) {
ret = -EINVAL;
goto out;
}
/* Copy the information for safe access and future storage */
ids = kmalloc_array(count, sizeof(*ids), GFP_KERNEL);
if (!ids) {
ret = -ENOMEM;
goto out;
}
if (!data) {
ret = -EINVAL;
goto out_free;
}
if (copy_from_user(ids, data, sizeof(*ids) * count)) {
ret = -EINVAL;
goto out_free;
}
for (i = 0; i < count; i++) {
/* Fail the command if ID sent is zero */
if (!ids[i]) {
ret = -EINVAL;
goto out_free;
}
}
/* Search for duplicate JIT ids */
for (i = 0; i < (count - 1); i++) {
u32 j;
for (j = (i + 1); j < count; j++) {
if (ids[i] == ids[j]) {
ret = -EINVAL;
goto out_free;
}
}
}
current_command->type = BASE_KCPU_COMMAND_TYPE_JIT_FREE;
list_add_tail(&current_command->info.jit_free.node,
&kctx->csf.kcpu_queues.jit_cmds_head);
current_command->info.jit_free.ids = ids;
current_command->info.jit_free.count = count;
return 0;
out_free:
kfree(ids);
out:
return ret;
}
static int kbase_csf_queue_group_suspend_prepare(
struct kbase_kcpu_command_queue *kcpu_queue,
struct base_kcpu_command_group_suspend_info *suspend_buf,
struct kbase_kcpu_command *current_command)
{
struct kbase_context *const kctx = kcpu_queue->kctx;
struct kbase_suspend_copy_buffer *sus_buf = NULL;
const u32 csg_suspend_buf_size =
kctx->kbdev->csf.global_iface.groups[0].suspend_size;
u64 addr = suspend_buf->buffer;
u64 page_addr = addr & PAGE_MASK;
u64 end_addr = addr + csg_suspend_buf_size - 1;
u64 last_page_addr = end_addr & PAGE_MASK;
int nr_pages = (last_page_addr - page_addr) / PAGE_SIZE + 1;
int pinned_pages = 0, ret = 0;
struct kbase_va_region *reg;
lockdep_assert_held(&kctx->csf.kcpu_queues.lock);
if (suspend_buf->size < csg_suspend_buf_size)
return -EINVAL;
ret = kbase_csf_queue_group_handle_is_valid(kctx,
suspend_buf->group_handle);
if (ret)
return ret;
sus_buf = kzalloc(sizeof(*sus_buf), GFP_KERNEL);
if (!sus_buf)
return -ENOMEM;
sus_buf->size = csg_suspend_buf_size;
sus_buf->nr_pages = nr_pages;
sus_buf->offset = addr & ~PAGE_MASK;
sus_buf->pages = kcalloc(nr_pages, sizeof(struct page *), GFP_KERNEL);
if (!sus_buf->pages) {
ret = -ENOMEM;
goto out_clean_sus_buf;
}
/* Check if the page_addr is a valid GPU VA from SAME_VA zone,
* otherwise consider it is a CPU VA corresponding to the Host
* memory allocated by userspace.
*/
kbase_gpu_vm_lock(kctx);
reg = kbase_region_tracker_find_region_enclosing_address(kctx,
page_addr);
if (kbase_is_region_invalid_or_free(reg)) {
kbase_gpu_vm_unlock(kctx);
pinned_pages = get_user_pages_fast(page_addr, nr_pages, 1,
sus_buf->pages);
kbase_gpu_vm_lock(kctx);
if (pinned_pages < 0) {
ret = pinned_pages;
goto out_clean_pages;
}
if (pinned_pages != nr_pages) {
ret = -EINVAL;
goto out_clean_pages;
}
} else {
struct tagged_addr *page_array;
u64 start, end, i;
if (((reg->flags & KBASE_REG_ZONE_MASK) != KBASE_REG_ZONE_SAME_VA) ||
(kbase_reg_current_backed_size(reg) < nr_pages) ||
!(reg->flags & KBASE_REG_CPU_WR) ||
(reg->gpu_alloc->type != KBASE_MEM_TYPE_NATIVE) ||
(reg->flags & KBASE_REG_DONT_NEED) ||
(reg->flags & KBASE_REG_ACTIVE_JIT_ALLOC) ||
(reg->flags & KBASE_REG_NO_USER_FREE)) {
ret = -EINVAL;
goto out_clean_pages;
}
start = PFN_DOWN(page_addr) - reg->start_pfn;
end = start + nr_pages;
if (end > reg->nr_pages) {
ret = -EINVAL;
goto out_clean_pages;
}
sus_buf->cpu_alloc = kbase_mem_phy_alloc_get(reg->cpu_alloc);
kbase_mem_phy_alloc_kernel_mapped(reg->cpu_alloc);
page_array = kbase_get_cpu_phy_pages(reg);
page_array += start;
for (i = 0; i < nr_pages; i++, page_array++)
sus_buf->pages[i] = as_page(*page_array);
}
kbase_gpu_vm_unlock(kctx);
current_command->type = BASE_KCPU_COMMAND_TYPE_GROUP_SUSPEND;
current_command->info.suspend_buf_copy.sus_buf = sus_buf;
current_command->info.suspend_buf_copy.group_handle =
suspend_buf->group_handle;
return ret;
out_clean_pages:
kbase_gpu_vm_unlock(kctx);
kfree(sus_buf->pages);
out_clean_sus_buf:
kfree(sus_buf);
return ret;
}
static int kbase_csf_queue_group_suspend_process(struct kbase_context *kctx,
struct kbase_suspend_copy_buffer *sus_buf,
u8 group_handle)
{
return kbase_csf_queue_group_suspend(kctx, sus_buf, group_handle);
}
static enum kbase_csf_event_callback_action event_cqs_callback(void *param)
{
struct kbase_kcpu_command_queue *kcpu_queue =
(struct kbase_kcpu_command_queue *)param;
struct kbase_context *const kctx = kcpu_queue->kctx;
queue_work(kctx->csf.kcpu_queues.wq, &kcpu_queue->work);
return KBASE_CSF_EVENT_CALLBACK_KEEP;
}
static void cleanup_cqs_wait(struct kbase_kcpu_command_queue *queue,
struct kbase_kcpu_command_cqs_wait_info *cqs_wait)
{
WARN_ON(!cqs_wait->nr_objs);
WARN_ON(!cqs_wait->objs);
WARN_ON(!cqs_wait->signaled);
WARN_ON(!queue->cqs_wait_count);
if (--queue->cqs_wait_count == 0) {
kbase_csf_event_wait_remove(queue->kctx,
event_cqs_callback, queue);
}
kfree(cqs_wait->signaled);
kfree(cqs_wait->objs);
cqs_wait->signaled = NULL;
cqs_wait->objs = NULL;
}
static int kbase_kcpu_cqs_wait_process(struct kbase_device *kbdev,
struct kbase_kcpu_command_queue *queue,
struct kbase_kcpu_command_cqs_wait_info *cqs_wait)
{
u32 i;
lockdep_assert_held(&queue->kctx->csf.kcpu_queues.lock);
if (WARN_ON(!cqs_wait->objs))
return -EINVAL;
/* Skip the CQS waits that have already been signaled when processing */
for (i = find_first_zero_bit(cqs_wait->signaled, cqs_wait->nr_objs); i < cqs_wait->nr_objs; i++) {
if (!test_bit(i, cqs_wait->signaled)) {
struct kbase_vmap_struct *mapping;
bool sig_set;
u32 *evt = (u32 *)kbase_phy_alloc_mapping_get(queue->kctx,
cqs_wait->objs[i].addr, &mapping);
if (!queue->command_started) {
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_CQS_WAIT_START(kbdev,
queue);
queue->command_started = true;
KBASE_KTRACE_ADD_CSF_KCPU(kbdev, CQS_WAIT_START,
queue, cqs_wait->nr_objs, 0);
}
if (!evt) {
dev_warn(kbdev->dev,
"Sync memory %llx already freed", cqs_wait->objs[i].addr);
queue->has_error = true;
return -EINVAL;
}
sig_set = evt[BASEP_EVENT_VAL_INDEX] > cqs_wait->objs[i].val;
if (sig_set) {
bool error = false;
bitmap_set(cqs_wait->signaled, i, 1);
if ((cqs_wait->inherit_err_flags & (1U << i)) &&
evt[BASEP_EVENT_ERR_INDEX] > 0) {
queue->has_error = true;
error = true;
}
KBASE_KTRACE_ADD_CSF_KCPU(kbdev, CQS_WAIT_END,
queue, cqs_wait->objs[i].addr,
error);
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_CQS_WAIT_END(
kbdev, queue, evt[BASEP_EVENT_ERR_INDEX]);
queue->command_started = false;
}
kbase_phy_alloc_mapping_put(queue->kctx, mapping);
if (!sig_set)
break;
}
}
/* For the queue to progress further, all cqs objects should get
* signaled.
*/
return bitmap_full(cqs_wait->signaled, cqs_wait->nr_objs);
}
static int kbase_kcpu_cqs_wait_prepare(struct kbase_kcpu_command_queue *queue,
struct base_kcpu_command_cqs_wait_info *cqs_wait_info,
struct kbase_kcpu_command *current_command)
{
struct base_cqs_wait_info *objs;
unsigned int nr_objs = cqs_wait_info->nr_objs;
lockdep_assert_held(&queue->kctx->csf.kcpu_queues.lock);
if (nr_objs > BASEP_KCPU_CQS_MAX_NUM_OBJS)
return -EINVAL;
if (!nr_objs)
return -EINVAL;
objs = kcalloc(nr_objs, sizeof(*objs), GFP_KERNEL);
if (!objs)
return -ENOMEM;
if (copy_from_user(objs, u64_to_user_ptr(cqs_wait_info->objs),
nr_objs * sizeof(*objs))) {
kfree(objs);
return -ENOMEM;
}
if (++queue->cqs_wait_count == 1) {
if (kbase_csf_event_wait_add(queue->kctx,
event_cqs_callback, queue)) {
kfree(objs);
queue->cqs_wait_count--;
return -ENOMEM;
}
}
current_command->type = BASE_KCPU_COMMAND_TYPE_CQS_WAIT;
current_command->info.cqs_wait.nr_objs = nr_objs;
current_command->info.cqs_wait.objs = objs;
current_command->info.cqs_wait.inherit_err_flags =
cqs_wait_info->inherit_err_flags;
current_command->info.cqs_wait.signaled = kcalloc(BITS_TO_LONGS(nr_objs),
sizeof(*current_command->info.cqs_wait.signaled), GFP_KERNEL);
if (!current_command->info.cqs_wait.signaled) {
if (--queue->cqs_wait_count == 0) {
kbase_csf_event_wait_remove(queue->kctx,
event_cqs_callback, queue);
}
kfree(objs);
return -ENOMEM;
}
return 0;
}
static void kbase_kcpu_cqs_set_process(struct kbase_device *kbdev,
struct kbase_kcpu_command_queue *queue,
struct kbase_kcpu_command_cqs_set_info *cqs_set)
{
unsigned int i;
lockdep_assert_held(&queue->kctx->csf.kcpu_queues.lock);
if (WARN_ON(!cqs_set->objs))
return;
for (i = 0; i < cqs_set->nr_objs; i++) {
struct kbase_vmap_struct *mapping;
u32 *evt;
evt = (u32 *)kbase_phy_alloc_mapping_get(
queue->kctx, cqs_set->objs[i].addr, &mapping);
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_CQS_SET(kbdev, queue, evt ? 0 : 1);
if (!evt) {
dev_warn(kbdev->dev,
"Sync memory %llx already freed", cqs_set->objs[i].addr);
queue->has_error = true;
} else {
evt[BASEP_EVENT_ERR_INDEX] = queue->has_error;
/* Set to signaled */
evt[BASEP_EVENT_VAL_INDEX]++;
kbase_phy_alloc_mapping_put(queue->kctx, mapping);
KBASE_KTRACE_ADD_CSF_KCPU(kbdev, CQS_SET,
queue, cqs_set->objs[i].addr,
evt[BASEP_EVENT_ERR_INDEX]);
}
}
kbase_csf_event_signal_notify_gpu(queue->kctx);
kfree(cqs_set->objs);
cqs_set->objs = NULL;
}
static int kbase_kcpu_cqs_set_prepare(
struct kbase_kcpu_command_queue *kcpu_queue,
struct base_kcpu_command_cqs_set_info *cqs_set_info,
struct kbase_kcpu_command *current_command)
{
struct kbase_context *const kctx = kcpu_queue->kctx;
struct base_cqs_set *objs;
unsigned int nr_objs = cqs_set_info->nr_objs;
lockdep_assert_held(&kctx->csf.kcpu_queues.lock);
if (nr_objs > BASEP_KCPU_CQS_MAX_NUM_OBJS)
return -EINVAL;
if (!nr_objs)
return -EINVAL;
objs = kcalloc(nr_objs, sizeof(*objs), GFP_KERNEL);
if (!objs)
return -ENOMEM;
if (copy_from_user(objs, u64_to_user_ptr(cqs_set_info->objs),
nr_objs * sizeof(*objs))) {
kfree(objs);
return -ENOMEM;
}
current_command->type = BASE_KCPU_COMMAND_TYPE_CQS_SET;
current_command->info.cqs_set.nr_objs = nr_objs;
current_command->info.cqs_set.objs = objs;
return 0;
}
static void cleanup_cqs_wait_operation(struct kbase_kcpu_command_queue *queue,
struct kbase_kcpu_command_cqs_wait_operation_info *cqs_wait_operation)
{
WARN_ON(!cqs_wait_operation->nr_objs);
WARN_ON(!cqs_wait_operation->objs);
WARN_ON(!cqs_wait_operation->signaled);
WARN_ON(!queue->cqs_wait_count);
if (--queue->cqs_wait_count == 0) {
kbase_csf_event_wait_remove(queue->kctx,
event_cqs_callback, queue);
}
kfree(cqs_wait_operation->signaled);
kfree(cqs_wait_operation->objs);
cqs_wait_operation->signaled = NULL;
cqs_wait_operation->objs = NULL;
}
static int kbase_kcpu_cqs_wait_operation_process(struct kbase_device *kbdev,
struct kbase_kcpu_command_queue *queue,
struct kbase_kcpu_command_cqs_wait_operation_info *cqs_wait_operation)
{
u32 i;
lockdep_assert_held(&queue->kctx->csf.kcpu_queues.lock);
if (WARN_ON(!cqs_wait_operation->objs))
return -EINVAL;
/* Skip the CQS waits that have already been signaled when processing */
for (i = find_first_zero_bit(cqs_wait_operation->signaled, cqs_wait_operation->nr_objs); i < cqs_wait_operation->nr_objs; i++) {
if (!test_bit(i, cqs_wait_operation->signaled)) {
struct kbase_vmap_struct *mapping;
bool sig_set;
u64 *evt = (u64 *)kbase_phy_alloc_mapping_get(queue->kctx,
cqs_wait_operation->objs[i].addr, &mapping);
/* GPUCORE-28172 RDT to review */
if (!queue->command_started)
queue->command_started = true;
if (!evt) {
dev_warn(kbdev->dev,
"Sync memory %llx already freed", cqs_wait_operation->objs[i].addr);
queue->has_error = true;
return -EINVAL;
}
switch (cqs_wait_operation->objs[i].operation) {
case BASEP_CQS_WAIT_OPERATION_LE:
sig_set = *evt <= cqs_wait_operation->objs[i].val;
break;
case BASEP_CQS_WAIT_OPERATION_GT:
sig_set = *evt > cqs_wait_operation->objs[i].val;
break;
default:
dev_dbg(kbdev->dev,
"Unsupported CQS wait operation %d", cqs_wait_operation->objs[i].operation);
kbase_phy_alloc_mapping_put(queue->kctx, mapping);
queue->has_error = true;
return -EINVAL;
}
/* Increment evt up to the error_state value depending on the CQS data type */
switch (cqs_wait_operation->objs[i].data_type) {
default:
dev_dbg(kbdev->dev, "Unreachable data_type=%d", cqs_wait_operation->objs[i].data_type);
/* Fallthrough - hint to compiler that there's really only 2 options at present */
fallthrough;
case BASEP_CQS_DATA_TYPE_U32:
evt = (u64 *)((u8 *)evt + sizeof(u32));
break;
case BASEP_CQS_DATA_TYPE_U64:
evt = (u64 *)((u8 *)evt + sizeof(u64));
break;
}
if (sig_set) {
bitmap_set(cqs_wait_operation->signaled, i, 1);
if ((cqs_wait_operation->inherit_err_flags & (1U << i)) &&
*evt > 0) {
queue->has_error = true;
}
/* GPUCORE-28172 RDT to review */
queue->command_started = false;
}
kbase_phy_alloc_mapping_put(queue->kctx, mapping);
if (!sig_set)
break;
}
}
/* For the queue to progress further, all cqs objects should get
* signaled.
*/
return bitmap_full(cqs_wait_operation->signaled, cqs_wait_operation->nr_objs);
}
static int kbase_kcpu_cqs_wait_operation_prepare(struct kbase_kcpu_command_queue *queue,
struct base_kcpu_command_cqs_wait_operation_info *cqs_wait_operation_info,
struct kbase_kcpu_command *current_command)
{
struct base_cqs_wait_operation_info *objs;
unsigned int nr_objs = cqs_wait_operation_info->nr_objs;
lockdep_assert_held(&queue->kctx->csf.kcpu_queues.lock);
if (nr_objs > BASEP_KCPU_CQS_MAX_NUM_OBJS)
return -EINVAL;
if (!nr_objs)
return -EINVAL;
objs = kcalloc(nr_objs, sizeof(*objs), GFP_KERNEL);
if (!objs)
return -ENOMEM;
if (copy_from_user(objs, u64_to_user_ptr(cqs_wait_operation_info->objs),
nr_objs * sizeof(*objs))) {
kfree(objs);
return -ENOMEM;
}
if (++queue->cqs_wait_count == 1) {
if (kbase_csf_event_wait_add(queue->kctx,
event_cqs_callback, queue)) {
kfree(objs);
queue->cqs_wait_count--;
return -ENOMEM;
}
}
current_command->type = BASE_KCPU_COMMAND_TYPE_CQS_WAIT_OPERATION;
current_command->info.cqs_wait_operation.nr_objs = nr_objs;
current_command->info.cqs_wait_operation.objs = objs;
current_command->info.cqs_wait_operation.inherit_err_flags =
cqs_wait_operation_info->inherit_err_flags;
current_command->info.cqs_wait_operation.signaled = kcalloc(BITS_TO_LONGS(nr_objs),
sizeof(*current_command->info.cqs_wait_operation.signaled), GFP_KERNEL);
if (!current_command->info.cqs_wait_operation.signaled) {
if (--queue->cqs_wait_count == 0) {
kbase_csf_event_wait_remove(queue->kctx,
event_cqs_callback, queue);
}
kfree(objs);
return -ENOMEM;
}
return 0;
}
static void kbase_kcpu_cqs_set_operation_process(
struct kbase_device *kbdev,
struct kbase_kcpu_command_queue *queue,
struct kbase_kcpu_command_cqs_set_operation_info *cqs_set_operation)
{
unsigned int i;
lockdep_assert_held(&queue->kctx->csf.kcpu_queues.lock);
if (WARN_ON(!cqs_set_operation->objs))
return;
for (i = 0; i < cqs_set_operation->nr_objs; i++) {
struct kbase_vmap_struct *mapping;
u64 *evt;
evt = (u64 *)kbase_phy_alloc_mapping_get(
queue->kctx, cqs_set_operation->objs[i].addr, &mapping);
/* GPUCORE-28172 RDT to review */
if (!evt) {
dev_warn(kbdev->dev,
"Sync memory %llx already freed", cqs_set_operation->objs[i].addr);
queue->has_error = true;
} else {
switch (cqs_set_operation->objs[i].operation) {
case BASEP_CQS_SET_OPERATION_ADD:
*evt += cqs_set_operation->objs[i].val;
break;
case BASEP_CQS_SET_OPERATION_SET:
*evt = cqs_set_operation->objs[i].val;
break;
default:
dev_dbg(kbdev->dev,
"Unsupported CQS set operation %d", cqs_set_operation->objs[i].operation);
queue->has_error = true;
break;
}
/* Increment evt up to the error_state value depending on the CQS data type */
switch (cqs_set_operation->objs[i].data_type) {
default:
dev_dbg(kbdev->dev, "Unreachable data_type=%d", cqs_set_operation->objs[i].data_type);
/* Fallthrough - hint to compiler that there's really only 2 options at present */
fallthrough;
case BASEP_CQS_DATA_TYPE_U32:
evt = (u64 *)((u8 *)evt + sizeof(u32));
break;
case BASEP_CQS_DATA_TYPE_U64:
evt = (u64 *)((u8 *)evt + sizeof(u64));
break;
}
/* GPUCORE-28172 RDT to review */
/* Always propagate errors */
*evt = queue->has_error;
kbase_phy_alloc_mapping_put(queue->kctx, mapping);
}
}
kbase_csf_event_signal_notify_gpu(queue->kctx);
kfree(cqs_set_operation->objs);
cqs_set_operation->objs = NULL;
}
static int kbase_kcpu_cqs_set_operation_prepare(
struct kbase_kcpu_command_queue *kcpu_queue,
struct base_kcpu_command_cqs_set_operation_info *cqs_set_operation_info,
struct kbase_kcpu_command *current_command)
{
struct kbase_context *const kctx = kcpu_queue->kctx;
struct base_cqs_set_operation_info *objs;
unsigned int nr_objs = cqs_set_operation_info->nr_objs;
lockdep_assert_held(&kctx->csf.kcpu_queues.lock);
if (nr_objs > BASEP_KCPU_CQS_MAX_NUM_OBJS)
return -EINVAL;
if (!nr_objs)
return -EINVAL;
objs = kcalloc(nr_objs, sizeof(*objs), GFP_KERNEL);
if (!objs)
return -ENOMEM;
if (copy_from_user(objs, u64_to_user_ptr(cqs_set_operation_info->objs),
nr_objs * sizeof(*objs))) {
kfree(objs);
return -ENOMEM;
}
current_command->type = BASE_KCPU_COMMAND_TYPE_CQS_SET_OPERATION;
current_command->info.cqs_set_operation.nr_objs = nr_objs;
current_command->info.cqs_set_operation.objs = objs;
return 0;
}
#if IS_ENABLED(CONFIG_SYNC_FILE)
#if (KERNEL_VERSION(4, 10, 0) > LINUX_VERSION_CODE)
static void kbase_csf_fence_wait_callback(struct fence *fence,
struct fence_cb *cb)
#else
static void kbase_csf_fence_wait_callback(struct dma_fence *fence,
struct dma_fence_cb *cb)
#endif
{
struct kbase_kcpu_command_fence_info *fence_info = container_of(cb,
struct kbase_kcpu_command_fence_info, fence_cb);
struct kbase_kcpu_command_queue *kcpu_queue = fence_info->kcpu_queue;
struct kbase_context *const kctx = kcpu_queue->kctx;
KBASE_KTRACE_ADD_CSF_KCPU(kctx->kbdev, FENCE_WAIT_END, kcpu_queue,
fence->context, fence->seqno);
/* Resume kcpu command queue processing. */
queue_work(kctx->csf.kcpu_queues.wq, &kcpu_queue->work);
}
static void kbase_kcpu_fence_wait_cancel(
struct kbase_kcpu_command_queue *kcpu_queue,
struct kbase_kcpu_command_fence_info *fence_info)
{
struct kbase_context *const kctx = kcpu_queue->kctx;
lockdep_assert_held(&kctx->csf.kcpu_queues.lock);
if (WARN_ON(!fence_info->fence))
return;
if (kcpu_queue->fence_wait_processed) {
bool removed = dma_fence_remove_callback(fence_info->fence,
&fence_info->fence_cb);
if (removed)
KBASE_KTRACE_ADD_CSF_KCPU(kctx->kbdev, FENCE_WAIT_END,
kcpu_queue, fence_info->fence->context,
fence_info->fence->seqno);
}
/* Release the reference which is kept by the kcpu_queue */
kbase_fence_put(fence_info->fence);
kcpu_queue->fence_wait_processed = false;
fence_info->fence = NULL;
}
/**
* kbase_kcpu_fence_wait_process() - Process the kcpu fence wait command
*
* @kcpu_queue: The queue containing the fence wait command
* @fence_info: Reference to a fence for which the command is waiting
*
* Return: 0 if fence wait is blocked, 1 if it is unblocked, negative error if
* an error has occurred and fence should no longer be waited on.
*/
static int kbase_kcpu_fence_wait_process(
struct kbase_kcpu_command_queue *kcpu_queue,
struct kbase_kcpu_command_fence_info *fence_info)
{
int fence_status = 0;
#if (KERNEL_VERSION(4, 10, 0) > LINUX_VERSION_CODE)
struct fence *fence;
#else
struct dma_fence *fence;
#endif
lockdep_assert_held(&kcpu_queue->kctx->csf.kcpu_queues.lock);
if (WARN_ON(!fence_info->fence))
return -EINVAL;
fence = fence_info->fence;
if (kcpu_queue->fence_wait_processed) {
fence_status = dma_fence_get_status(fence);
} else {
int cb_err = dma_fence_add_callback(fence,
&fence_info->fence_cb,
kbase_csf_fence_wait_callback);
KBASE_KTRACE_ADD_CSF_KCPU(kcpu_queue->kctx->kbdev,
FENCE_WAIT_START, kcpu_queue,
fence->context, fence->seqno);
fence_status = cb_err;
if (cb_err == 0)
kcpu_queue->fence_wait_processed = true;
else if (cb_err == -ENOENT)
fence_status = dma_fence_get_status(fence);
}
/*
* At this point fence status can contain 3 types of values:
* - Value 0 to represent that fence in question is not signalled yet
* - Value 1 to represent that fence in question is signalled without
* errors
* - Negative error code to represent that some error has occurred such
* that waiting on it is no longer valid.
*/
if (fence_status)
kbase_kcpu_fence_wait_cancel(kcpu_queue, fence_info);
return fence_status;
}
static int kbase_kcpu_fence_wait_prepare(
struct kbase_kcpu_command_queue *kcpu_queue,
struct base_kcpu_command_fence_info *fence_info,
struct kbase_kcpu_command *current_command)
{
struct kbase_context *const kctx = kcpu_queue->kctx;
#if (KERNEL_VERSION(4, 10, 0) > LINUX_VERSION_CODE)
struct fence *fence_in;
#else
struct dma_fence *fence_in;
#endif
struct base_fence fence;
lockdep_assert_held(&kctx->csf.kcpu_queues.lock);
if (copy_from_user(&fence, u64_to_user_ptr(fence_info->fence),
sizeof(fence)))
return -ENOMEM;
fence_in = sync_file_get_fence(fence.basep.fd);
if (!fence_in)
return -ENOENT;
current_command->type = BASE_KCPU_COMMAND_TYPE_FENCE_WAIT;
current_command->info.fence.fence = fence_in;
current_command->info.fence.kcpu_queue = kcpu_queue;
return 0;
}
static int kbase_kcpu_fence_signal_process(
struct kbase_kcpu_command_queue *kcpu_queue,
struct kbase_kcpu_command_fence_info *fence_info)
{
struct kbase_context *const kctx = kcpu_queue->kctx;
int ret;
if (WARN_ON(!fence_info->fence))
return -EINVAL;
ret = dma_fence_signal(fence_info->fence);
if (unlikely(ret < 0)) {
dev_warn(kctx->kbdev->dev,
"fence_signal() failed with %d\n", ret);
}
KBASE_KTRACE_ADD_CSF_KCPU(kctx->kbdev, FENCE_SIGNAL, kcpu_queue,
fence_info->fence->context,
fence_info->fence->seqno);
dma_fence_put(fence_info->fence);
fence_info->fence = NULL;
return ret;
}
static int kbase_kcpu_fence_signal_prepare(
struct kbase_kcpu_command_queue *kcpu_queue,
struct base_kcpu_command_fence_info *fence_info,
struct kbase_kcpu_command *current_command)
{
struct kbase_context *const kctx = kcpu_queue->kctx;
#if (KERNEL_VERSION(4, 10, 0) > LINUX_VERSION_CODE)
struct fence *fence_out;
#else
struct dma_fence *fence_out;
#endif
struct base_fence fence;
struct sync_file *sync_file;
int ret = 0;
int fd;
lockdep_assert_held(&kctx->csf.kcpu_queues.lock);
if (copy_from_user(&fence, u64_to_user_ptr(fence_info->fence),
sizeof(fence)))
return -EFAULT;
fence_out = kzalloc(sizeof(*fence_out), GFP_KERNEL);
if (!fence_out)
return -ENOMEM;
dma_fence_init(fence_out,
&kbase_fence_ops,
&kbase_csf_fence_lock,
kcpu_queue->fence_context,
++kcpu_queue->fence_seqno);
#if (KERNEL_VERSION(4, 9, 67) >= LINUX_VERSION_CODE)
/* Take an extra reference to the fence on behalf of the sync file.
* This is only needded on older kernels where sync_file_create()
* does not take its own reference. This was changed in v4.9.68
* where sync_file_create() now takes its own reference.
*/
dma_fence_get(fence_out);
#endif
/* create a sync_file fd representing the fence */
sync_file = sync_file_create(fence_out);
if (!sync_file) {
#if (KERNEL_VERSION(4, 9, 67) >= LINUX_VERSION_CODE)
dma_fence_put(fence_out);
#endif
ret = -ENOMEM;
goto file_create_fail;
}
fd = get_unused_fd_flags(O_CLOEXEC);
if (fd < 0) {
ret = fd;
goto fd_flags_fail;
}
fence.basep.fd = fd;
current_command->type = BASE_KCPU_COMMAND_TYPE_FENCE_SIGNAL;
current_command->info.fence.fence = fence_out;
if (copy_to_user(u64_to_user_ptr(fence_info->fence), &fence,
sizeof(fence))) {
ret = -EFAULT;
goto fd_flags_fail;
}
/* 'sync_file' pointer can't be safely dereferenced once 'fd' is
* installed, so the install step needs to be done at the last
* before returning success.
*/
fd_install(fd, sync_file->file);
return 0;
fd_flags_fail:
fput(sync_file->file);
file_create_fail:
dma_fence_put(fence_out);
return ret;
}
#endif /* CONFIG_SYNC_FILE */
static void kcpu_queue_process_worker(struct work_struct *data)
{
struct kbase_kcpu_command_queue *queue = container_of(data,
struct kbase_kcpu_command_queue, work);
mutex_lock(&queue->kctx->csf.kcpu_queues.lock);
kcpu_queue_process(queue, false);
mutex_unlock(&queue->kctx->csf.kcpu_queues.lock);
}
static int delete_queue(struct kbase_context *kctx, u32 id)
{
int err = 0;
mutex_lock(&kctx->csf.kcpu_queues.lock);
if ((id < KBASEP_MAX_KCPU_QUEUES) && kctx->csf.kcpu_queues.array[id]) {
struct kbase_kcpu_command_queue *queue =
kctx->csf.kcpu_queues.array[id];
KBASE_KTRACE_ADD_CSF_KCPU(kctx->kbdev, KCPU_QUEUE_DESTROY,
queue, queue->num_pending_cmds, queue->cqs_wait_count);
/* Drain the remaining work for this queue first and go past
* all the waits.
*/
kcpu_queue_process(queue, true);
/* All commands should have been processed */
WARN_ON(queue->num_pending_cmds);
/* All CQS wait commands should have been cleaned up */
WARN_ON(queue->cqs_wait_count);
kctx->csf.kcpu_queues.array[id] = NULL;
bitmap_clear(kctx->csf.kcpu_queues.in_use, id, 1);
/* Fire the tracepoint with the mutex held to enforce correct
* ordering with the summary stream.
*/
KBASE_TLSTREAM_TL_KBASE_DEL_KCPUQUEUE(kctx->kbdev, queue);
mutex_unlock(&kctx->csf.kcpu_queues.lock);
cancel_work_sync(&queue->work);
kfree(queue);
} else {
dev_dbg(kctx->kbdev->dev,
"Attempt to delete a non-existent KCPU queue");
mutex_unlock(&kctx->csf.kcpu_queues.lock);
err = -EINVAL;
}
return err;
}
static void KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_JIT_ALLOC_INFO(
struct kbase_device *kbdev,
const struct kbase_kcpu_command_queue *queue,
const struct kbase_kcpu_command_jit_alloc_info *jit_alloc,
int alloc_status)
{
u8 i;
KBASE_TLSTREAM_TL_KBASE_ARRAY_BEGIN_KCPUQUEUE_EXECUTE_JIT_ALLOC_END(kbdev, queue);
for (i = 0; i < jit_alloc->count; i++) {
const u8 id = jit_alloc->info[i].id;
const struct kbase_va_region *reg = queue->kctx->jit_alloc[id];
u64 gpu_alloc_addr = 0;
u64 mmu_flags = 0;
if ((alloc_status == 0) && !WARN_ON(!reg) &&
!WARN_ON(reg == KBASE_RESERVED_REG_JIT_ALLOC)) {
#ifdef CONFIG_MALI_VECTOR_DUMP
struct tagged_addr phy = {0};
#endif /* CONFIG_MALI_VECTOR_DUMP */
gpu_alloc_addr = reg->start_pfn << PAGE_SHIFT;
#ifdef CONFIG_MALI_VECTOR_DUMP
mmu_flags = kbase_mmu_create_ate(kbdev,
phy, reg->flags,
MIDGARD_MMU_BOTTOMLEVEL,
queue->kctx->jit_group_id);
#endif /* CONFIG_MALI_VECTOR_DUMP */
}
KBASE_TLSTREAM_TL_KBASE_ARRAY_ITEM_KCPUQUEUE_EXECUTE_JIT_ALLOC_END(
kbdev, queue, alloc_status, gpu_alloc_addr, mmu_flags);
}
}
static void KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_JIT_ALLOC_END(
struct kbase_device *kbdev,
const struct kbase_kcpu_command_queue *queue)
{
KBASE_TLSTREAM_TL_KBASE_ARRAY_END_KCPUQUEUE_EXECUTE_JIT_ALLOC_END(kbdev, queue);
}
static void KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_JIT_FREE_END(
struct kbase_device *kbdev,
const struct kbase_kcpu_command_queue *queue)
{
KBASE_TLSTREAM_TL_KBASE_ARRAY_END_KCPUQUEUE_EXECUTE_JIT_FREE_END(kbdev, queue);
}
static void kcpu_queue_process(struct kbase_kcpu_command_queue *queue,
bool drain_queue)
{
struct kbase_device *kbdev = queue->kctx->kbdev;
bool process_next = true;
size_t i;
lockdep_assert_held(&queue->kctx->csf.kcpu_queues.lock);
for (i = 0; i != queue->num_pending_cmds; ++i) {
struct kbase_kcpu_command *cmd =
&queue->commands[(u8)(queue->start_offset + i)];
int status;
switch (cmd->type) {
case BASE_KCPU_COMMAND_TYPE_FENCE_WAIT:
if (!queue->command_started) {
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_FENCE_WAIT_START(kbdev,
queue);
queue->command_started = true;
}
status = 0;
#if IS_ENABLED(CONFIG_SYNC_FILE)
if (drain_queue) {
kbase_kcpu_fence_wait_cancel(queue,
&cmd->info.fence);
} else {
status = kbase_kcpu_fence_wait_process(queue,
&cmd->info.fence);
if (status == 0)
process_next = false;
else if (status < 0)
queue->has_error = true;
}
#else
dev_warn(kbdev->dev,
"unexpected fence wait command found\n");
status = -EINVAL;
queue->has_error = true;
#endif
if (process_next) {
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_FENCE_WAIT_END(
kbdev, queue, status < 0 ? status : 0);
queue->command_started = false;
}
break;
case BASE_KCPU_COMMAND_TYPE_FENCE_SIGNAL:
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_FENCE_SIGNAL_START(kbdev, queue);
status = 0;
#if IS_ENABLED(CONFIG_SYNC_FILE)
status = kbase_kcpu_fence_signal_process(
queue, &cmd->info.fence);
if (status < 0)
queue->has_error = true;
#else
dev_warn(kbdev->dev,
"unexpected fence signal command found\n");
status = -EINVAL;
queue->has_error = true;
#endif
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_FENCE_SIGNAL_END(kbdev, queue,
status);
break;
case BASE_KCPU_COMMAND_TYPE_CQS_WAIT:
status = kbase_kcpu_cqs_wait_process(kbdev, queue,
&cmd->info.cqs_wait);
if (!status && !drain_queue) {
process_next = false;
} else {
/* Either all CQS objects were signaled or
* there was an error or the queue itself is
* being deleted.
* In all cases can move to the next command.
* TBD: handle the error
*/
cleanup_cqs_wait(queue, &cmd->info.cqs_wait);
}
break;
case BASE_KCPU_COMMAND_TYPE_CQS_SET:
kbase_kcpu_cqs_set_process(kbdev, queue,
&cmd->info.cqs_set);
break;
case BASE_KCPU_COMMAND_TYPE_CQS_WAIT_OPERATION:
status = kbase_kcpu_cqs_wait_operation_process(kbdev, queue,
&cmd->info.cqs_wait_operation);
if (!status && !drain_queue) {
process_next = false;
} else {
/* Either all CQS objects were signaled or
* there was an error or the queue itself is
* being deleted.
* In all cases can move to the next command.
* TBD: handle the error
*/
cleanup_cqs_wait_operation(queue, &cmd->info.cqs_wait_operation);
}
break;
case BASE_KCPU_COMMAND_TYPE_CQS_SET_OPERATION:
kbase_kcpu_cqs_set_operation_process(kbdev, queue,
&cmd->info.cqs_set_operation);
break;
case BASE_KCPU_COMMAND_TYPE_ERROR_BARRIER:
/* Clear the queue's error state */
queue->has_error = false;
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_ERROR_BARRIER(kbdev, queue);
break;
case BASE_KCPU_COMMAND_TYPE_MAP_IMPORT: {
struct kbase_ctx_ext_res_meta *meta = NULL;
if (!drain_queue) {
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_MAP_IMPORT_START(kbdev,
queue);
kbase_gpu_vm_lock(queue->kctx);
meta = kbase_sticky_resource_acquire(
queue->kctx, cmd->info.import.gpu_va);
kbase_gpu_vm_unlock(queue->kctx);
if (meta == NULL) {
queue->has_error = true;
dev_dbg(
kbdev->dev,
"failed to map an external resource");
}
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_MAP_IMPORT_END(
kbdev, queue, meta ? 0 : 1);
}
break;
}
case BASE_KCPU_COMMAND_TYPE_UNMAP_IMPORT: {
bool ret;
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_UNMAP_IMPORT_START(kbdev, queue);
kbase_gpu_vm_lock(queue->kctx);
ret = kbase_sticky_resource_release(
queue->kctx, NULL, cmd->info.import.gpu_va);
kbase_gpu_vm_unlock(queue->kctx);
if (!ret) {
queue->has_error = true;
dev_dbg(kbdev->dev,
"failed to release the reference. resource not found");
}
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_UNMAP_IMPORT_END(kbdev, queue,
ret ? 0 : 1);
break;
}
case BASE_KCPU_COMMAND_TYPE_UNMAP_IMPORT_FORCE: {
bool ret;
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_UNMAP_IMPORT_FORCE_START(kbdev,
queue);
kbase_gpu_vm_lock(queue->kctx);
ret = kbase_sticky_resource_release_force(
queue->kctx, NULL, cmd->info.import.gpu_va);
kbase_gpu_vm_unlock(queue->kctx);
if (!ret) {
queue->has_error = true;
dev_dbg(kbdev->dev,
"failed to release the reference. resource not found");
}
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_UNMAP_IMPORT_FORCE_END(
kbdev, queue, ret ? 0 : 1);
break;
}
case BASE_KCPU_COMMAND_TYPE_JIT_ALLOC:
{
if (drain_queue) {
/* We still need to call this function to clean the JIT alloc info up */
kbase_kcpu_jit_allocate_finish(queue, cmd);
} else {
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_JIT_ALLOC_START(kbdev,
queue);
status = kbase_kcpu_jit_allocate_process(queue,
cmd);
if (status == -EAGAIN) {
process_next = false;
} else {
if (status != 0)
queue->has_error = true;
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_JIT_ALLOC_INFO(
kbdev, queue,
&cmd->info.jit_alloc, status);
kbase_kcpu_jit_allocate_finish(queue,
cmd);
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_JIT_ALLOC_END(
kbdev, queue);
}
}
break;
}
case BASE_KCPU_COMMAND_TYPE_JIT_FREE:
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_JIT_FREE_START(kbdev, queue);
status = kbase_kcpu_jit_free_process(queue, cmd);
if (status)
queue->has_error = true;
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_JIT_FREE_END(
kbdev, queue);
break;
case BASE_KCPU_COMMAND_TYPE_GROUP_SUSPEND: {
struct kbase_suspend_copy_buffer *sus_buf =
cmd->info.suspend_buf_copy.sus_buf;
if (!drain_queue) {
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_GROUP_SUSPEND_START(
kbdev, queue);
status = kbase_csf_queue_group_suspend_process(
queue->kctx, sus_buf,
cmd->info.suspend_buf_copy.group_handle);
if (status)
queue->has_error = true;
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_EXECUTE_GROUP_SUSPEND_END(
kbdev, queue, status);
if (!sus_buf->cpu_alloc) {
int i;
for (i = 0; i < sus_buf->nr_pages; i++)
put_page(sus_buf->pages[i]);
} else {
kbase_mem_phy_alloc_kernel_unmapped(
sus_buf->cpu_alloc);
kbase_mem_phy_alloc_put(
sus_buf->cpu_alloc);
}
}
kfree(sus_buf->pages);
kfree(sus_buf);
break;
}
default:
dev_dbg(kbdev->dev,
"Unrecognized command type");
break;
} /* switch */
/*TBD: error handling */
if (!process_next)
break;
}
if (i > 0) {
queue->start_offset += i;
queue->num_pending_cmds -= i;
/* If an attempt to enqueue commands failed then we must raise
* an event in case the client wants to retry now that there is
* free space in the buffer.
*/
if (queue->enqueue_failed) {
queue->enqueue_failed = false;
kbase_csf_event_signal_cpu_only(queue->kctx);
}
}
}
static size_t kcpu_queue_get_space(struct kbase_kcpu_command_queue *queue)
{
return KBASEP_KCPU_QUEUE_SIZE - queue->num_pending_cmds;
}
static void KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_ENQUEUE_COMMAND(
const struct kbase_kcpu_command_queue *queue,
const struct kbase_kcpu_command *cmd)
{
struct kbase_device *kbdev = queue->kctx->kbdev;
switch (cmd->type) {
case BASE_KCPU_COMMAND_TYPE_FENCE_WAIT:
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_ENQUEUE_FENCE_WAIT(kbdev, queue,
cmd->info.fence.fence);
break;
case BASE_KCPU_COMMAND_TYPE_FENCE_SIGNAL:
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_ENQUEUE_FENCE_SIGNAL(kbdev, queue,
cmd->info.fence.fence);
break;
case BASE_KCPU_COMMAND_TYPE_CQS_WAIT:
{
const struct base_cqs_wait_info *waits =
cmd->info.cqs_wait.objs;
u32 inherit_err_flags = cmd->info.cqs_wait.inherit_err_flags;
unsigned int i;
for (i = 0; i < cmd->info.cqs_wait.nr_objs; i++) {
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_ENQUEUE_CQS_WAIT(
kbdev, queue, waits[i].addr, waits[i].val,
(inherit_err_flags & ((u32)1 << i)) ? 1 : 0);
}
break;
}
case BASE_KCPU_COMMAND_TYPE_CQS_SET:
{
const struct base_cqs_set *sets = cmd->info.cqs_set.objs;
unsigned int i;
for (i = 0; i < cmd->info.cqs_set.nr_objs; i++) {
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_ENQUEUE_CQS_SET(kbdev, queue,
sets[i].addr);
}
break;
}
case BASE_KCPU_COMMAND_TYPE_CQS_WAIT_OPERATION:
{
/* GPUCORE-28172 RDT to review */
break;
}
case BASE_KCPU_COMMAND_TYPE_CQS_SET_OPERATION:
{
/* GPUCORE-28172 RDT to review */
break;
}
case BASE_KCPU_COMMAND_TYPE_ERROR_BARRIER:
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_ENQUEUE_ERROR_BARRIER(kbdev, queue);
break;
case BASE_KCPU_COMMAND_TYPE_MAP_IMPORT:
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_ENQUEUE_MAP_IMPORT(kbdev, queue,
cmd->info.import.gpu_va);
break;
case BASE_KCPU_COMMAND_TYPE_UNMAP_IMPORT:
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_ENQUEUE_UNMAP_IMPORT(kbdev, queue,
cmd->info.import.gpu_va);
break;
case BASE_KCPU_COMMAND_TYPE_UNMAP_IMPORT_FORCE:
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_ENQUEUE_UNMAP_IMPORT_FORCE(
kbdev, queue, cmd->info.import.gpu_va);
break;
case BASE_KCPU_COMMAND_TYPE_JIT_ALLOC:
{
u8 i;
KBASE_TLSTREAM_TL_KBASE_ARRAY_BEGIN_KCPUQUEUE_ENQUEUE_JIT_ALLOC(kbdev, queue);
for (i = 0; i < cmd->info.jit_alloc.count; i++) {
const struct base_jit_alloc_info *info =
&cmd->info.jit_alloc.info[i];
KBASE_TLSTREAM_TL_KBASE_ARRAY_ITEM_KCPUQUEUE_ENQUEUE_JIT_ALLOC(
kbdev, queue, info->gpu_alloc_addr, info->va_pages,
info->commit_pages, info->extension, info->id, info->bin_id,
info->max_allocations, info->flags, info->usage_id);
}
KBASE_TLSTREAM_TL_KBASE_ARRAY_END_KCPUQUEUE_ENQUEUE_JIT_ALLOC(kbdev, queue);
break;
}
case BASE_KCPU_COMMAND_TYPE_JIT_FREE:
{
u8 i;
KBASE_TLSTREAM_TL_KBASE_ARRAY_BEGIN_KCPUQUEUE_ENQUEUE_JIT_FREE(kbdev, queue);
for (i = 0; i < cmd->info.jit_free.count; i++) {
KBASE_TLSTREAM_TL_KBASE_ARRAY_ITEM_KCPUQUEUE_ENQUEUE_JIT_FREE(
kbdev, queue, cmd->info.jit_free.ids[i]);
}
KBASE_TLSTREAM_TL_KBASE_ARRAY_END_KCPUQUEUE_ENQUEUE_JIT_FREE(kbdev, queue);
break;
}
case BASE_KCPU_COMMAND_TYPE_GROUP_SUSPEND:
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_ENQUEUE_GROUP_SUSPEND(
kbdev, queue, cmd->info.suspend_buf_copy.sus_buf,
cmd->info.suspend_buf_copy.group_handle);
break;
default:
dev_dbg(kbdev->dev, "Unknown command type %u", cmd->type);
break;
}
}
int kbase_csf_kcpu_queue_enqueue(struct kbase_context *kctx,
struct kbase_ioctl_kcpu_queue_enqueue *enq)
{
struct kbase_kcpu_command_queue *queue = NULL;
void __user *user_cmds = u64_to_user_ptr(enq->addr);
int ret = 0;
u32 i;
/* The offset to the first command that is being processed or yet to
* be processed is of u8 type, so the number of commands inside the
* queue cannot be more than 256.
*/
BUILD_BUG_ON(KBASEP_KCPU_QUEUE_SIZE > 256);
/* Whilst the backend interface allows enqueueing multiple commands in
* a single operation, the Base interface does not expose any mechanism
* to do so. And also right now the handling is missing for the case
* where multiple commands are submitted and the enqueue of one of the
* command in the set fails after successfully enqueuing other commands
* in the set.
*/
if (enq->nr_commands != 1) {
dev_dbg(kctx->kbdev->dev,
"More than one commands enqueued");
return -EINVAL;
}
mutex_lock(&kctx->csf.kcpu_queues.lock);
if (!kctx->csf.kcpu_queues.array[enq->id]) {
ret = -EINVAL;
goto out;
}
queue = kctx->csf.kcpu_queues.array[enq->id];
if (kcpu_queue_get_space(queue) < enq->nr_commands) {
ret = -EBUSY;
queue->enqueue_failed = true;
goto out;
}
/* Copy all command's info to the command buffer.
* Note: it would be more efficient to process all commands in-line
* until we encounter an unresolved CQS_ / FENCE_WAIT, however, the
* interface allows multiple commands to be enqueued so we must account
* for the possibility to roll back.
*/
for (i = 0; (i != enq->nr_commands) && !ret; ++i, ++kctx->csf.kcpu_queues.num_cmds) {
struct kbase_kcpu_command *kcpu_cmd =
&queue->commands[(u8)(queue->start_offset + queue->num_pending_cmds + i)];
struct base_kcpu_command command;
unsigned int j;
if (copy_from_user(&command, user_cmds, sizeof(command))) {
ret = -EFAULT;
goto out;
}
user_cmds = (void __user *)((uintptr_t)user_cmds +
sizeof(struct base_kcpu_command));
for (j = 0; j < sizeof(command.padding); j++) {
if (command.padding[j] != 0) {
dev_dbg(kctx->kbdev->dev,
"base_kcpu_command padding not 0\n");
ret = -EINVAL;
goto out;
}
}
kcpu_cmd->enqueue_ts = kctx->csf.kcpu_queues.num_cmds;
switch (command.type) {
case BASE_KCPU_COMMAND_TYPE_FENCE_WAIT:
#if IS_ENABLED(CONFIG_SYNC_FILE)
ret = kbase_kcpu_fence_wait_prepare(queue,
&command.info.fence, kcpu_cmd);
#else
ret = -EINVAL;
dev_warn(kctx->kbdev->dev, "fence wait command unsupported\n");
#endif
break;
case BASE_KCPU_COMMAND_TYPE_FENCE_SIGNAL:
#if IS_ENABLED(CONFIG_SYNC_FILE)
ret = kbase_kcpu_fence_signal_prepare(queue,
&command.info.fence, kcpu_cmd);
#else
ret = -EINVAL;
dev_warn(kctx->kbdev->dev, "fence signal command unsupported\n");
#endif
break;
case BASE_KCPU_COMMAND_TYPE_CQS_WAIT:
ret = kbase_kcpu_cqs_wait_prepare(queue,
&command.info.cqs_wait, kcpu_cmd);
break;
case BASE_KCPU_COMMAND_TYPE_CQS_SET:
ret = kbase_kcpu_cqs_set_prepare(queue,
&command.info.cqs_set, kcpu_cmd);
break;
case BASE_KCPU_COMMAND_TYPE_CQS_WAIT_OPERATION:
ret = kbase_kcpu_cqs_wait_operation_prepare(queue,
&command.info.cqs_wait_operation, kcpu_cmd);
break;
case BASE_KCPU_COMMAND_TYPE_CQS_SET_OPERATION:
ret = kbase_kcpu_cqs_set_operation_prepare(queue,
&command.info.cqs_set_operation, kcpu_cmd);
break;
case BASE_KCPU_COMMAND_TYPE_ERROR_BARRIER:
kcpu_cmd->type = BASE_KCPU_COMMAND_TYPE_ERROR_BARRIER;
ret = 0;
break;
case BASE_KCPU_COMMAND_TYPE_MAP_IMPORT:
ret = kbase_kcpu_map_import_prepare(queue,
&command.info.import, kcpu_cmd);
break;
case BASE_KCPU_COMMAND_TYPE_UNMAP_IMPORT:
ret = kbase_kcpu_unmap_import_prepare(queue,
&command.info.import, kcpu_cmd);
break;
case BASE_KCPU_COMMAND_TYPE_UNMAP_IMPORT_FORCE:
ret = kbase_kcpu_unmap_import_force_prepare(queue,
&command.info.import, kcpu_cmd);
break;
case BASE_KCPU_COMMAND_TYPE_JIT_ALLOC:
ret = kbase_kcpu_jit_allocate_prepare(queue,
&command.info.jit_alloc, kcpu_cmd);
break;
case BASE_KCPU_COMMAND_TYPE_JIT_FREE:
ret = kbase_kcpu_jit_free_prepare(queue,
&command.info.jit_free, kcpu_cmd);
break;
case BASE_KCPU_COMMAND_TYPE_GROUP_SUSPEND:
ret = kbase_csf_queue_group_suspend_prepare(queue,
&command.info.suspend_buf_copy,
kcpu_cmd);
break;
default:
dev_dbg(queue->kctx->kbdev->dev,
"Unknown command type %u", command.type);
ret = -EINVAL;
break;
}
}
if (!ret) {
/* We only instrument the enqueues after all commands have been
* successfully enqueued, as if we do them during the enqueue
* and there is an error, we won't be able to roll them back
* like is done for the command enqueues themselves.
*/
for (i = 0; i != enq->nr_commands; ++i) {
u8 cmd_idx = (u8)(queue->start_offset + queue->num_pending_cmds + i);
KBASE_TLSTREAM_TL_KBASE_KCPUQUEUE_ENQUEUE_COMMAND(
queue, &queue->commands[cmd_idx]);
}
queue->num_pending_cmds += enq->nr_commands;
kcpu_queue_process(queue, false);
} else {
/* Roll back the number of enqueued commands */
kctx->csf.kcpu_queues.num_cmds -= i;
}
out:
mutex_unlock(&kctx->csf.kcpu_queues.lock);
return ret;
}
int kbase_csf_kcpu_queue_context_init(struct kbase_context *kctx)
{
int idx;
bitmap_zero(kctx->csf.kcpu_queues.in_use, KBASEP_MAX_KCPU_QUEUES);
for (idx = 0; idx < KBASEP_MAX_KCPU_QUEUES; ++idx)
kctx->csf.kcpu_queues.array[idx] = NULL;
kctx->csf.kcpu_queues.wq = alloc_workqueue("mali_kbase_csf_kcpu",
WQ_UNBOUND | WQ_HIGHPRI, 0);
if (!kctx->csf.kcpu_queues.wq)
return -ENOMEM;
mutex_init(&kctx->csf.kcpu_queues.lock);
kctx->csf.kcpu_queues.num_cmds = 0;
return 0;
}
void kbase_csf_kcpu_queue_context_term(struct kbase_context *kctx)
{
while (!bitmap_empty(kctx->csf.kcpu_queues.in_use,
KBASEP_MAX_KCPU_QUEUES)) {
int id = find_first_bit(kctx->csf.kcpu_queues.in_use,
KBASEP_MAX_KCPU_QUEUES);
if (WARN_ON(!kctx->csf.kcpu_queues.array[id]))
clear_bit(id, kctx->csf.kcpu_queues.in_use);
else
(void)delete_queue(kctx, id);
}
destroy_workqueue(kctx->csf.kcpu_queues.wq);
mutex_destroy(&kctx->csf.kcpu_queues.lock);
}
int kbase_csf_kcpu_queue_delete(struct kbase_context *kctx,
struct kbase_ioctl_kcpu_queue_delete *del)
{
return delete_queue(kctx, (u32)del->id);
}
int kbase_csf_kcpu_queue_new(struct kbase_context *kctx,
struct kbase_ioctl_kcpu_queue_new *newq)
{
struct kbase_kcpu_command_queue *queue;
int idx;
int ret = 0;
/* The queue id is of u8 type and we use the index of the kcpu_queues
* array as an id, so the number of elements in the array can't be
* more than 256.
*/
BUILD_BUG_ON(KBASEP_MAX_KCPU_QUEUES > 256);
mutex_lock(&kctx->csf.kcpu_queues.lock);
idx = find_first_zero_bit(kctx->csf.kcpu_queues.in_use,
KBASEP_MAX_KCPU_QUEUES);
if (idx >= (int)KBASEP_MAX_KCPU_QUEUES) {
ret = -ENOMEM;
goto out;
}
if (WARN_ON(kctx->csf.kcpu_queues.array[idx])) {
ret = -EINVAL;
goto out;
}
queue = kzalloc(sizeof(*queue), GFP_KERNEL);
if (!queue) {
ret = -ENOMEM;
goto out;
}
bitmap_set(kctx->csf.kcpu_queues.in_use, idx, 1);
kctx->csf.kcpu_queues.array[idx] = queue;
queue->kctx = kctx;
queue->start_offset = 0;
queue->num_pending_cmds = 0;
#if IS_ENABLED(CONFIG_SYNC_FILE)
queue->fence_context = dma_fence_context_alloc(1);
queue->fence_seqno = 0;
queue->fence_wait_processed = false;
#endif
queue->enqueue_failed = false;
queue->command_started = false;
INIT_LIST_HEAD(&queue->jit_blocked);
queue->has_error = false;
INIT_WORK(&queue->work, kcpu_queue_process_worker);
queue->id = idx;
newq->id = idx;
/* Fire the tracepoint with the mutex held to enforce correct ordering
* with the summary stream.
*/
KBASE_TLSTREAM_TL_KBASE_NEW_KCPUQUEUE(kctx->kbdev, queue, queue->id, kctx->id,
queue->num_pending_cmds);
KBASE_KTRACE_ADD_CSF_KCPU(kctx->kbdev, KCPU_QUEUE_NEW, queue,
queue->fence_context, 0);
out:
mutex_unlock(&kctx->csf.kcpu_queues.lock);
return ret;
}