// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
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/*
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*
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* (C) COPYRIGHT 2019-2022 ARM Limited. All rights reserved.
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*
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* This program is free software and is provided to you under the terms of the
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* GNU General Public License version 2 as published by the Free Software
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* Foundation, and any use by you of this program is subject to the terms
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* of such GNU license.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you can access it online at
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* http://www.gnu.org/licenses/gpl-2.0.html.
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*
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*/
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#include "mali_kbase_csf_csg_debugfs.h"
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#include <mali_kbase.h>
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#include <linux/seq_file.h>
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#include <linux/delay.h>
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#include <backend/gpu/mali_kbase_pm_internal.h>
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#if IS_ENABLED(CONFIG_DEBUG_FS)
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#include "mali_kbase_csf_tl_reader.h"
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/* Wait time to be used cumulatively for all the CSG slots.
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* Since scheduler lock is held when STATUS_UPDATE request is sent, there won't be
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* any other Host request pending on the FW side and usually FW would be responsive
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* to the Doorbell IRQs as it won't do any polling for a long time and also it won't
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* have to wait for any HW state transition to complete for publishing the status.
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* So it is reasonable to expect that handling of STATUS_UPDATE request would be
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* relatively very quick.
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*/
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#define STATUS_UPDATE_WAIT_TIMEOUT 500
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/* The bitmask of CSG slots for which the STATUS_UPDATE request completed.
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* The access to it is serialized with scheduler lock, so at a time it would
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* get used either for "active_groups" or per context "groups" debugfs file.
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*/
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static DECLARE_BITMAP(csg_slots_status_updated, MAX_SUPPORTED_CSGS);
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static
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bool csg_slot_status_update_finish(struct kbase_device *kbdev, u32 csg_nr)
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{
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struct kbase_csf_cmd_stream_group_info const *const ginfo =
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&kbdev->csf.global_iface.groups[csg_nr];
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return !((kbase_csf_firmware_csg_input_read(ginfo, CSG_REQ) ^
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kbase_csf_firmware_csg_output(ginfo, CSG_ACK)) &
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CSG_REQ_STATUS_UPDATE_MASK);
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}
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static
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bool csg_slots_status_update_finish(struct kbase_device *kbdev,
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const unsigned long *slots_mask)
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{
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const u32 max_csg_slots = kbdev->csf.global_iface.group_num;
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bool changed = false;
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u32 csg_nr;
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lockdep_assert_held(&kbdev->csf.scheduler.lock);
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for_each_set_bit(csg_nr, slots_mask, max_csg_slots) {
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if (csg_slot_status_update_finish(kbdev, csg_nr)) {
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set_bit(csg_nr, csg_slots_status_updated);
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changed = true;
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}
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}
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return changed;
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}
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static void wait_csg_slots_status_update_finish(struct kbase_device *kbdev,
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unsigned long *slots_mask)
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{
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const u32 max_csg_slots = kbdev->csf.global_iface.group_num;
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long remaining = kbase_csf_timeout_in_jiffies(STATUS_UPDATE_WAIT_TIMEOUT);
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lockdep_assert_held(&kbdev->csf.scheduler.lock);
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bitmap_zero(csg_slots_status_updated, max_csg_slots);
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while (!bitmap_empty(slots_mask, max_csg_slots) && remaining) {
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remaining = wait_event_timeout(kbdev->csf.event_wait,
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csg_slots_status_update_finish(kbdev, slots_mask),
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remaining);
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if (likely(remaining)) {
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bitmap_andnot(slots_mask, slots_mask,
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csg_slots_status_updated, max_csg_slots);
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} else {
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dev_warn(kbdev->dev,
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"STATUS_UPDATE request timed out for slots 0x%lx",
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slots_mask[0]);
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}
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}
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}
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void kbase_csf_debugfs_update_active_groups_status(struct kbase_device *kbdev)
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{
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u32 max_csg_slots = kbdev->csf.global_iface.group_num;
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DECLARE_BITMAP(used_csgs, MAX_SUPPORTED_CSGS) = { 0 };
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u32 csg_nr;
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unsigned long flags;
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lockdep_assert_held(&kbdev->csf.scheduler.lock);
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/* Global doorbell ring for CSG STATUS_UPDATE request or User doorbell
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* ring for Extract offset update, shall not be made when MCU has been
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* put to sleep otherwise it will undesirably make MCU exit the sleep
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* state. Also it isn't really needed as FW will implicitly update the
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* status of all on-slot groups when MCU sleep request is sent to it.
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*/
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if (kbdev->csf.scheduler.state == SCHED_SLEEPING) {
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/* Wait for the MCU sleep request to complete. */
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kbase_pm_wait_for_desired_state(kbdev);
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bitmap_copy(csg_slots_status_updated,
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kbdev->csf.scheduler.csg_inuse_bitmap, max_csg_slots);
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return;
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}
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for (csg_nr = 0; csg_nr < max_csg_slots; csg_nr++) {
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struct kbase_queue_group *const group =
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kbdev->csf.scheduler.csg_slots[csg_nr].resident_group;
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if (!group)
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continue;
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/* Ring the User doorbell for FW to update the Extract offset */
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kbase_csf_ring_doorbell(kbdev, group->doorbell_nr);
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set_bit(csg_nr, used_csgs);
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}
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/* Return early if there are no on-slot groups */
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if (bitmap_empty(used_csgs, max_csg_slots))
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return;
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kbase_csf_scheduler_spin_lock(kbdev, &flags);
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for_each_set_bit(csg_nr, used_csgs, max_csg_slots) {
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struct kbase_csf_cmd_stream_group_info const *const ginfo =
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&kbdev->csf.global_iface.groups[csg_nr];
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kbase_csf_firmware_csg_input_mask(ginfo, CSG_REQ,
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~kbase_csf_firmware_csg_output(ginfo, CSG_ACK),
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CSG_REQ_STATUS_UPDATE_MASK);
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}
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BUILD_BUG_ON(MAX_SUPPORTED_CSGS > (sizeof(used_csgs[0]) * BITS_PER_BYTE));
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kbase_csf_ring_csg_slots_doorbell(kbdev, used_csgs[0]);
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kbase_csf_scheduler_spin_unlock(kbdev, flags);
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wait_csg_slots_status_update_finish(kbdev, used_csgs);
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/* Wait for the User doobell ring to take effect */
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msleep(100);
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}
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#define MAX_SCHED_STATE_STRING_LEN (16)
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static const char *scheduler_state_to_string(struct kbase_device *kbdev,
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enum kbase_csf_scheduler_state sched_state)
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{
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switch (sched_state) {
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case SCHED_BUSY:
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return "BUSY";
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case SCHED_INACTIVE:
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return "INACTIVE";
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case SCHED_SUSPENDED:
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return "SUSPENDED";
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#ifdef KBASE_PM_RUNTIME
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case SCHED_SLEEPING:
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return "SLEEPING";
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#endif
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default:
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dev_warn(kbdev->dev, "Unknown Scheduler state %d", sched_state);
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return NULL;
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}
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}
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/**
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* blocked_reason_to_string() - Convert blocking reason id to a string
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*
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* @reason_id: blocked_reason
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*
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* Return: Suitable string
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*/
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static const char *blocked_reason_to_string(u32 reason_id)
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{
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/* possible blocking reasons of a cs */
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static const char *const cs_blocked_reason[] = {
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[CS_STATUS_BLOCKED_REASON_REASON_UNBLOCKED] = "UNBLOCKED",
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[CS_STATUS_BLOCKED_REASON_REASON_WAIT] = "WAIT",
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[CS_STATUS_BLOCKED_REASON_REASON_PROGRESS_WAIT] =
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"PROGRESS_WAIT",
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[CS_STATUS_BLOCKED_REASON_REASON_SYNC_WAIT] = "SYNC_WAIT",
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[CS_STATUS_BLOCKED_REASON_REASON_DEFERRED] = "DEFERRED",
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[CS_STATUS_BLOCKED_REASON_REASON_RESOURCE] = "RESOURCE",
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[CS_STATUS_BLOCKED_REASON_REASON_FLUSH] = "FLUSH"
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};
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if (WARN_ON(reason_id >= ARRAY_SIZE(cs_blocked_reason)))
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return "UNKNOWN_BLOCKED_REASON_ID";
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return cs_blocked_reason[reason_id];
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}
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static bool sb_source_supported(u32 glb_version)
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{
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bool supported = false;
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if (((GLB_VERSION_MAJOR_GET(glb_version) == 3) &&
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(GLB_VERSION_MINOR_GET(glb_version) >= 5)) ||
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((GLB_VERSION_MAJOR_GET(glb_version) == 2) &&
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(GLB_VERSION_MINOR_GET(glb_version) >= 6)) ||
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((GLB_VERSION_MAJOR_GET(glb_version) == 1) &&
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(GLB_VERSION_MINOR_GET(glb_version) >= 3)))
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supported = true;
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return supported;
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}
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static void kbasep_csf_scheduler_dump_active_queue_cs_status_wait(
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struct seq_file *file, u32 glb_version, u32 wait_status, u32 wait_sync_value,
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u64 wait_sync_live_value, u64 wait_sync_pointer, u32 sb_status, u32 blocked_reason)
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{
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#define WAITING "Waiting"
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#define NOT_WAITING "Not waiting"
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seq_printf(file, "SB_MASK: %d\n",
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CS_STATUS_WAIT_SB_MASK_GET(wait_status));
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if (sb_source_supported(glb_version))
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seq_printf(file, "SB_SOURCE: %d\n", CS_STATUS_WAIT_SB_SOURCE_GET(wait_status));
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seq_printf(file, "PROGRESS_WAIT: %s\n",
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CS_STATUS_WAIT_PROGRESS_WAIT_GET(wait_status) ?
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WAITING : NOT_WAITING);
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seq_printf(file, "PROTM_PEND: %s\n",
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CS_STATUS_WAIT_PROTM_PEND_GET(wait_status) ?
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WAITING : NOT_WAITING);
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seq_printf(file, "SYNC_WAIT: %s\n",
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CS_STATUS_WAIT_SYNC_WAIT_GET(wait_status) ?
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WAITING : NOT_WAITING);
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seq_printf(file, "WAIT_CONDITION: %s\n",
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CS_STATUS_WAIT_SYNC_WAIT_CONDITION_GET(wait_status) ?
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"greater than" : "less or equal");
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seq_printf(file, "SYNC_POINTER: 0x%llx\n", wait_sync_pointer);
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seq_printf(file, "SYNC_VALUE: %d\n", wait_sync_value);
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seq_printf(file, "SYNC_LIVE_VALUE: 0x%016llx\n", wait_sync_live_value);
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seq_printf(file, "SB_STATUS: %u\n",
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CS_STATUS_SCOREBOARDS_NONZERO_GET(sb_status));
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seq_printf(file, "BLOCKED_REASON: %s\n",
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blocked_reason_to_string(CS_STATUS_BLOCKED_REASON_REASON_GET(
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blocked_reason)));
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}
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static void kbasep_csf_scheduler_dump_active_cs_trace(struct seq_file *file,
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struct kbase_csf_cmd_stream_info const *const stream)
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{
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u32 val = kbase_csf_firmware_cs_input_read(stream,
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CS_INSTR_BUFFER_BASE_LO);
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u64 addr = ((u64)kbase_csf_firmware_cs_input_read(stream,
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CS_INSTR_BUFFER_BASE_HI) << 32) | val;
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val = kbase_csf_firmware_cs_input_read(stream,
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CS_INSTR_BUFFER_SIZE);
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seq_printf(file, "CS_TRACE_BUF_ADDR: 0x%16llx, SIZE: %u\n", addr, val);
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/* Write offset variable address (pointer) */
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val = kbase_csf_firmware_cs_input_read(stream,
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CS_INSTR_BUFFER_OFFSET_POINTER_LO);
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addr = ((u64)kbase_csf_firmware_cs_input_read(stream,
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CS_INSTR_BUFFER_OFFSET_POINTER_HI) << 32) | val;
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seq_printf(file, "CS_TRACE_BUF_OFFSET_PTR: 0x%16llx\n", addr);
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/* EVENT_SIZE and EVENT_STATEs */
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val = kbase_csf_firmware_cs_input_read(stream, CS_INSTR_CONFIG);
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seq_printf(file, "TRACE_EVENT_SIZE: 0x%x, TRACE_EVENT_STAES 0x%x\n",
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CS_INSTR_CONFIG_EVENT_SIZE_GET(val),
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CS_INSTR_CONFIG_EVENT_STATE_GET(val));
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}
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/**
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* kbasep_csf_scheduler_dump_active_queue() - Print GPU command queue
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* debug information
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*
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* @file: seq_file for printing to
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* @queue: Address of a GPU command queue to examine
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*/
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static void kbasep_csf_scheduler_dump_active_queue(struct seq_file *file,
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struct kbase_queue *queue)
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{
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u32 *addr;
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u64 cs_extract;
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u64 cs_insert;
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u32 cs_active;
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u64 wait_sync_pointer;
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u32 wait_status, wait_sync_value;
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u32 sb_status;
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u32 blocked_reason;
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struct kbase_vmap_struct *mapping;
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u64 *evt;
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u64 wait_sync_live_value;
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u32 glb_version;
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if (!queue)
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return;
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glb_version = queue->kctx->kbdev->csf.global_iface.version;
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if (WARN_ON(queue->csi_index == KBASEP_IF_NR_INVALID ||
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!queue->group))
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return;
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addr = (u32 *)queue->user_io_addr;
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cs_insert = addr[CS_INSERT_LO/4] | ((u64)addr[CS_INSERT_HI/4] << 32);
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addr = (u32 *)(queue->user_io_addr + PAGE_SIZE);
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cs_extract = addr[CS_EXTRACT_LO/4] | ((u64)addr[CS_EXTRACT_HI/4] << 32);
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cs_active = addr[CS_ACTIVE/4];
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#define KBASEP_CSF_DEBUGFS_CS_HEADER_USER_IO \
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"Bind Idx, Ringbuf addr, Size, Prio, Insert offset, Extract offset, Active, Doorbell\n"
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seq_printf(file, KBASEP_CSF_DEBUGFS_CS_HEADER_USER_IO "%8d, %16llx, %8x, %4u, %16llx, %16llx, %6u, %8d\n",
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queue->csi_index, queue->base_addr,
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queue->size,
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queue->priority, cs_insert, cs_extract, cs_active, queue->doorbell_nr);
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/* Print status information for blocked group waiting for sync object. For on-slot queues,
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* if cs_trace is enabled, dump the interface's cs_trace configuration.
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*/
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if (kbase_csf_scheduler_group_get_slot(queue->group) < 0) {
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seq_printf(file, "SAVED_CMD_PTR: 0x%llx\n", queue->saved_cmd_ptr);
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if (CS_STATUS_WAIT_SYNC_WAIT_GET(queue->status_wait)) {
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wait_status = queue->status_wait;
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wait_sync_value = queue->sync_value;
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wait_sync_pointer = queue->sync_ptr;
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sb_status = queue->sb_status;
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blocked_reason = queue->blocked_reason;
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evt = (u64 *)kbase_phy_alloc_mapping_get(queue->kctx, wait_sync_pointer, &mapping);
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if (evt) {
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wait_sync_live_value = evt[0];
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kbase_phy_alloc_mapping_put(queue->kctx, mapping);
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} else {
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wait_sync_live_value = U64_MAX;
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}
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kbasep_csf_scheduler_dump_active_queue_cs_status_wait(
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file, glb_version, wait_status, wait_sync_value,
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wait_sync_live_value, wait_sync_pointer, sb_status, blocked_reason);
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}
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} else {
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struct kbase_device const *const kbdev =
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queue->group->kctx->kbdev;
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struct kbase_csf_cmd_stream_group_info const *const ginfo =
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&kbdev->csf.global_iface.groups[queue->group->csg_nr];
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struct kbase_csf_cmd_stream_info const *const stream =
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&ginfo->streams[queue->csi_index];
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u64 cmd_ptr;
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u32 req_res;
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if (WARN_ON(!stream))
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return;
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cmd_ptr = kbase_csf_firmware_cs_output(stream,
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CS_STATUS_CMD_PTR_LO);
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cmd_ptr |= (u64)kbase_csf_firmware_cs_output(stream,
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CS_STATUS_CMD_PTR_HI) << 32;
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req_res = kbase_csf_firmware_cs_output(stream,
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CS_STATUS_REQ_RESOURCE);
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seq_printf(file, "CMD_PTR: 0x%llx\n", cmd_ptr);
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seq_printf(file, "REQ_RESOURCE [COMPUTE]: %d\n",
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CS_STATUS_REQ_RESOURCE_COMPUTE_RESOURCES_GET(req_res));
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seq_printf(file, "REQ_RESOURCE [FRAGMENT]: %d\n",
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CS_STATUS_REQ_RESOURCE_FRAGMENT_RESOURCES_GET(req_res));
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seq_printf(file, "REQ_RESOURCE [TILER]: %d\n",
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CS_STATUS_REQ_RESOURCE_TILER_RESOURCES_GET(req_res));
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seq_printf(file, "REQ_RESOURCE [IDVS]: %d\n",
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CS_STATUS_REQ_RESOURCE_IDVS_RESOURCES_GET(req_res));
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wait_status = kbase_csf_firmware_cs_output(stream,
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CS_STATUS_WAIT);
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wait_sync_value = kbase_csf_firmware_cs_output(stream,
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CS_STATUS_WAIT_SYNC_VALUE);
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wait_sync_pointer = kbase_csf_firmware_cs_output(stream,
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CS_STATUS_WAIT_SYNC_POINTER_LO);
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wait_sync_pointer |= (u64)kbase_csf_firmware_cs_output(stream,
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CS_STATUS_WAIT_SYNC_POINTER_HI) << 32;
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sb_status = kbase_csf_firmware_cs_output(stream,
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CS_STATUS_SCOREBOARDS);
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blocked_reason = kbase_csf_firmware_cs_output(
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stream, CS_STATUS_BLOCKED_REASON);
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evt = (u64 *)kbase_phy_alloc_mapping_get(queue->kctx, wait_sync_pointer, &mapping);
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if (evt) {
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wait_sync_live_value = evt[0];
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kbase_phy_alloc_mapping_put(queue->kctx, mapping);
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} else {
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wait_sync_live_value = U64_MAX;
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}
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kbasep_csf_scheduler_dump_active_queue_cs_status_wait(
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file, glb_version, wait_status, wait_sync_value, wait_sync_live_value,
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wait_sync_pointer, sb_status, blocked_reason);
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/* Dealing with cs_trace */
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if (kbase_csf_scheduler_queue_has_trace(queue))
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kbasep_csf_scheduler_dump_active_cs_trace(file, stream);
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else
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seq_puts(file, "NO CS_TRACE\n");
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}
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seq_puts(file, "\n");
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}
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static void kbasep_csf_scheduler_dump_active_group(struct seq_file *file,
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struct kbase_queue_group *const group)
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{
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if (kbase_csf_scheduler_group_get_slot(group) >= 0) {
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struct kbase_device *const kbdev = group->kctx->kbdev;
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u32 ep_c, ep_r;
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char exclusive;
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char idle = 'N';
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struct kbase_csf_cmd_stream_group_info const *const ginfo =
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&kbdev->csf.global_iface.groups[group->csg_nr];
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u8 slot_priority =
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kbdev->csf.scheduler.csg_slots[group->csg_nr].priority;
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ep_c = kbase_csf_firmware_csg_output(ginfo,
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CSG_STATUS_EP_CURRENT);
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ep_r = kbase_csf_firmware_csg_output(ginfo, CSG_STATUS_EP_REQ);
|
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if (CSG_STATUS_EP_REQ_EXCLUSIVE_COMPUTE_GET(ep_r))
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exclusive = 'C';
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else if (CSG_STATUS_EP_REQ_EXCLUSIVE_FRAGMENT_GET(ep_r))
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exclusive = 'F';
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else
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exclusive = '0';
|
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if (kbase_csf_firmware_csg_output(ginfo, CSG_STATUS_STATE) &
|
CSG_STATUS_STATE_IDLE_MASK)
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idle = 'Y';
|
|
if (!test_bit(group->csg_nr, csg_slots_status_updated)) {
|
seq_printf(file, "*** Warn: Timed out for STATUS_UPDATE on slot %d\n",
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group->csg_nr);
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seq_puts(file, "*** The following group-record is likely stale\n");
|
}
|
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seq_puts(file, "GroupID, CSG NR, CSG Prio, Run State, Priority, C_EP(Alloc/Req), F_EP(Alloc/Req), T_EP(Alloc/Req), Exclusive, Idle\n");
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seq_printf(file, "%7d, %6d, %8d, %9d, %8d, %11d/%3d, %11d/%3d, %11d/%3d, %9c, %4c\n",
|
group->handle,
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group->csg_nr,
|
slot_priority,
|
group->run_state,
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group->priority,
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CSG_STATUS_EP_CURRENT_COMPUTE_EP_GET(ep_c),
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CSG_STATUS_EP_REQ_COMPUTE_EP_GET(ep_r),
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CSG_STATUS_EP_CURRENT_FRAGMENT_EP_GET(ep_c),
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CSG_STATUS_EP_REQ_FRAGMENT_EP_GET(ep_r),
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CSG_STATUS_EP_CURRENT_TILER_EP_GET(ep_c),
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CSG_STATUS_EP_REQ_TILER_EP_GET(ep_r),
|
exclusive,
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idle);
|
} else {
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seq_puts(file, "GroupID, CSG NR, Run State, Priority\n");
|
seq_printf(file, "%7d, %6d, %9d, %8d\n",
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group->handle,
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group->csg_nr,
|
group->run_state,
|
group->priority);
|
}
|
|
if (group->run_state != KBASE_CSF_GROUP_TERMINATED) {
|
unsigned int i;
|
|
seq_puts(file, "Bound queues:\n");
|
|
for (i = 0; i < MAX_SUPPORTED_STREAMS_PER_GROUP; i++) {
|
kbasep_csf_scheduler_dump_active_queue(file,
|
group->bound_queues[i]);
|
}
|
}
|
|
seq_puts(file, "\n");
|
}
|
|
/**
|
* kbasep_csf_queue_group_debugfs_show() - Print per-context GPU command queue
|
* group debug information
|
*
|
* @file: The seq_file for printing to
|
* @data: The debugfs dentry private data, a pointer to kbase context
|
*
|
* Return: Negative error code or 0 on success.
|
*/
|
static int kbasep_csf_queue_group_debugfs_show(struct seq_file *file,
|
void *data)
|
{
|
u32 gr;
|
struct kbase_context *const kctx = file->private;
|
struct kbase_device *kbdev;
|
|
if (WARN_ON(!kctx))
|
return -EINVAL;
|
|
kbdev = kctx->kbdev;
|
|
seq_printf(file, "MALI_CSF_CSG_DEBUGFS_VERSION: v%u\n",
|
MALI_CSF_CSG_DEBUGFS_VERSION);
|
|
mutex_lock(&kctx->csf.lock);
|
kbase_csf_scheduler_lock(kbdev);
|
kbase_csf_debugfs_update_active_groups_status(kbdev);
|
for (gr = 0; gr < MAX_QUEUE_GROUP_NUM; gr++) {
|
struct kbase_queue_group *const group =
|
kctx->csf.queue_groups[gr];
|
|
if (group)
|
kbasep_csf_scheduler_dump_active_group(file, group);
|
}
|
kbase_csf_scheduler_unlock(kbdev);
|
mutex_unlock(&kctx->csf.lock);
|
|
return 0;
|
}
|
|
/**
|
* kbasep_csf_scheduler_dump_active_groups() - Print debug info for active
|
* GPU command queue groups
|
*
|
* @file: The seq_file for printing to
|
* @data: The debugfs dentry private data, a pointer to kbase_device
|
*
|
* Return: Negative error code or 0 on success.
|
*/
|
static int kbasep_csf_scheduler_dump_active_groups(struct seq_file *file,
|
void *data)
|
{
|
u32 csg_nr;
|
struct kbase_device *kbdev = file->private;
|
u32 num_groups = kbdev->csf.global_iface.group_num;
|
|
seq_printf(file, "MALI_CSF_CSG_DEBUGFS_VERSION: v%u\n",
|
MALI_CSF_CSG_DEBUGFS_VERSION);
|
|
kbase_csf_scheduler_lock(kbdev);
|
kbase_csf_debugfs_update_active_groups_status(kbdev);
|
for (csg_nr = 0; csg_nr < num_groups; csg_nr++) {
|
struct kbase_queue_group *const group =
|
kbdev->csf.scheduler.csg_slots[csg_nr].resident_group;
|
|
if (!group)
|
continue;
|
|
seq_printf(file, "\nCtx %d_%d\n", group->kctx->tgid,
|
group->kctx->id);
|
|
kbasep_csf_scheduler_dump_active_group(file, group);
|
}
|
kbase_csf_scheduler_unlock(kbdev);
|
|
return 0;
|
}
|
|
static int kbasep_csf_queue_group_debugfs_open(struct inode *in,
|
struct file *file)
|
{
|
return single_open(file, kbasep_csf_queue_group_debugfs_show,
|
in->i_private);
|
}
|
|
static int kbasep_csf_active_queue_groups_debugfs_open(struct inode *in,
|
struct file *file)
|
{
|
return single_open(file, kbasep_csf_scheduler_dump_active_groups,
|
in->i_private);
|
}
|
|
static const struct file_operations kbasep_csf_queue_group_debugfs_fops = {
|
.open = kbasep_csf_queue_group_debugfs_open,
|
.read = seq_read,
|
.llseek = seq_lseek,
|
.release = single_release,
|
};
|
|
void kbase_csf_queue_group_debugfs_init(struct kbase_context *kctx)
|
{
|
struct dentry *file;
|
const mode_t mode = 0444;
|
|
if (WARN_ON(!kctx || IS_ERR_OR_NULL(kctx->kctx_dentry)))
|
return;
|
|
file = debugfs_create_file("groups", mode,
|
kctx->kctx_dentry, kctx, &kbasep_csf_queue_group_debugfs_fops);
|
|
if (IS_ERR_OR_NULL(file)) {
|
dev_warn(kctx->kbdev->dev,
|
"Unable to create per context queue groups debugfs entry");
|
}
|
}
|
|
static const struct file_operations
|
kbasep_csf_active_queue_groups_debugfs_fops = {
|
.open = kbasep_csf_active_queue_groups_debugfs_open,
|
.read = seq_read,
|
.llseek = seq_lseek,
|
.release = single_release,
|
};
|
|
static int kbasep_csf_debugfs_scheduling_timer_enabled_get(
|
void *data, u64 *val)
|
{
|
struct kbase_device *const kbdev = data;
|
|
*val = kbase_csf_scheduler_timer_is_enabled(kbdev);
|
|
return 0;
|
}
|
|
static int kbasep_csf_debugfs_scheduling_timer_enabled_set(
|
void *data, u64 val)
|
{
|
struct kbase_device *const kbdev = data;
|
|
kbase_csf_scheduler_timer_set_enabled(kbdev, val != 0);
|
|
return 0;
|
}
|
|
static int kbasep_csf_debugfs_scheduling_timer_kick_set(
|
void *data, u64 val)
|
{
|
struct kbase_device *const kbdev = data;
|
|
kbase_csf_scheduler_kick(kbdev);
|
|
return 0;
|
}
|
|
DEFINE_DEBUGFS_ATTRIBUTE(kbasep_csf_debugfs_scheduling_timer_enabled_fops,
|
&kbasep_csf_debugfs_scheduling_timer_enabled_get,
|
&kbasep_csf_debugfs_scheduling_timer_enabled_set, "%llu\n");
|
DEFINE_DEBUGFS_ATTRIBUTE(kbasep_csf_debugfs_scheduling_timer_kick_fops, NULL,
|
&kbasep_csf_debugfs_scheduling_timer_kick_set, "%llu\n");
|
|
/**
|
* kbase_csf_debugfs_scheduler_state_get() - Get the state of scheduler.
|
*
|
* @file: Object of the file that is being read.
|
* @user_buf: User buffer that contains the string.
|
* @count: Length of user buffer
|
* @ppos: Offset within file object
|
*
|
* This function will return the current Scheduler state to Userspace
|
* Scheduler may exit that state by the time the state string is received
|
* by the Userspace.
|
*
|
* Return: 0 if Scheduler was found in an unexpected state, or the
|
* size of the state string if it was copied successfully to the
|
* User buffer or a negative value in case of an error.
|
*/
|
static ssize_t kbase_csf_debugfs_scheduler_state_get(struct file *file,
|
char __user *user_buf, size_t count, loff_t *ppos)
|
{
|
struct kbase_device *kbdev = file->private_data;
|
struct kbase_csf_scheduler *scheduler = &kbdev->csf.scheduler;
|
const char *state_string;
|
|
kbase_csf_scheduler_lock(kbdev);
|
state_string = scheduler_state_to_string(kbdev, scheduler->state);
|
kbase_csf_scheduler_unlock(kbdev);
|
|
if (!state_string)
|
count = 0;
|
|
return simple_read_from_buffer(user_buf, count, ppos,
|
state_string, strlen(state_string));
|
}
|
|
/**
|
* kbase_csf_debugfs_scheduler_state_set() - Set the state of scheduler.
|
*
|
* @file: Object of the file that is being written to.
|
* @ubuf: User buffer that contains the string.
|
* @count: Length of user buffer
|
* @ppos: Offset within file object
|
*
|
* This function will update the Scheduler state as per the state string
|
* passed by the Userspace. Scheduler may or may not remain in new state
|
* for long.
|
*
|
* Return: Negative value if the string doesn't correspond to a valid Scheduler
|
* state or if copy from user buffer failed, otherwise the length of
|
* the User buffer.
|
*/
|
static ssize_t kbase_csf_debugfs_scheduler_state_set(struct file *file,
|
const char __user *ubuf, size_t count, loff_t *ppos)
|
{
|
struct kbase_device *kbdev = file->private_data;
|
char buf[MAX_SCHED_STATE_STRING_LEN];
|
ssize_t ret = count;
|
|
CSTD_UNUSED(ppos);
|
|
count = min_t(size_t, sizeof(buf) - 1, count);
|
if (copy_from_user(buf, ubuf, count))
|
return -EFAULT;
|
|
buf[count] = 0;
|
|
if (sysfs_streq(buf, "SUSPENDED"))
|
kbase_csf_scheduler_pm_suspend(kbdev);
|
#ifdef KBASE_PM_RUNTIME
|
else if (sysfs_streq(buf, "SLEEPING"))
|
kbase_csf_scheduler_force_sleep(kbdev);
|
#endif
|
else if (sysfs_streq(buf, "INACTIVE"))
|
kbase_csf_scheduler_force_wakeup(kbdev);
|
else {
|
dev_dbg(kbdev->dev, "Bad scheduler state %s", buf);
|
ret = -EINVAL;
|
}
|
|
return ret;
|
}
|
|
static const struct file_operations kbasep_csf_debugfs_scheduler_state_fops = {
|
.owner = THIS_MODULE,
|
.read = kbase_csf_debugfs_scheduler_state_get,
|
.write = kbase_csf_debugfs_scheduler_state_set,
|
.open = simple_open,
|
.llseek = default_llseek,
|
};
|
|
void kbase_csf_debugfs_init(struct kbase_device *kbdev)
|
{
|
debugfs_create_file("active_groups", 0444,
|
kbdev->mali_debugfs_directory, kbdev,
|
&kbasep_csf_active_queue_groups_debugfs_fops);
|
|
debugfs_create_file("scheduling_timer_enabled", 0644,
|
kbdev->mali_debugfs_directory, kbdev,
|
&kbasep_csf_debugfs_scheduling_timer_enabled_fops);
|
debugfs_create_file("scheduling_timer_kick", 0200,
|
kbdev->mali_debugfs_directory, kbdev,
|
&kbasep_csf_debugfs_scheduling_timer_kick_fops);
|
debugfs_create_file("scheduler_state", 0644,
|
kbdev->mali_debugfs_directory, kbdev,
|
&kbasep_csf_debugfs_scheduler_state_fops);
|
|
kbase_csf_tl_reader_debugfs_init(kbdev);
|
}
|
|
#else
|
/*
|
* Stub functions for when debugfs is disabled
|
*/
|
void kbase_csf_queue_group_debugfs_init(struct kbase_context *kctx)
|
{
|
}
|
|
void kbase_csf_debugfs_init(struct kbase_device *kbdev)
|
{
|
}
|
|
#endif /* CONFIG_DEBUG_FS */
|
