159 lines
4.2 KiB
C
159 lines
4.2 KiB
C
/*
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* Copyright 2014 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/log2.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/device.h>
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#include "kfd_priv.h"
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#include "cik_regs.h"
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#include "kfd_pm4_headers.h"
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#include "kfd_pm4_headers_diq.h"
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#include "kfd_dbgmgr.h"
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#include "kfd_dbgdev.h"
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#include "kfd_device_queue_manager.h"
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static DEFINE_MUTEX(kfd_dbgmgr_mutex);
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struct mutex *kfd_get_dbgmgr_mutex(void)
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{
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return &kfd_dbgmgr_mutex;
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}
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static void kfd_dbgmgr_uninitialize(struct kfd_dbgmgr *pmgr)
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{
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kfree(pmgr->dbgdev);
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pmgr->dbgdev = NULL;
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pmgr->pasid = 0;
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pmgr->dev = NULL;
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}
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void kfd_dbgmgr_destroy(struct kfd_dbgmgr *pmgr)
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{
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if (pmgr) {
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kfd_dbgmgr_uninitialize(pmgr);
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kfree(pmgr);
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}
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}
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bool kfd_dbgmgr_create(struct kfd_dbgmgr **ppmgr, struct kfd_dev *pdev)
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{
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enum DBGDEV_TYPE type = DBGDEV_TYPE_DIQ;
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struct kfd_dbgmgr *new_buff;
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if (WARN_ON(!pdev->init_complete))
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return false;
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new_buff = kfd_alloc_struct(new_buff);
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if (!new_buff) {
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pr_err("Failed to allocate dbgmgr instance\n");
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return false;
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}
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new_buff->pasid = 0;
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new_buff->dev = pdev;
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new_buff->dbgdev = kfd_alloc_struct(new_buff->dbgdev);
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if (!new_buff->dbgdev) {
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pr_err("Failed to allocate dbgdev instance\n");
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kfree(new_buff);
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return false;
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}
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/* get actual type of DBGDevice cpsch or not */
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if (pdev->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS)
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type = DBGDEV_TYPE_NODIQ;
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kfd_dbgdev_init(new_buff->dbgdev, pdev, type);
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*ppmgr = new_buff;
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return true;
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}
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long kfd_dbgmgr_register(struct kfd_dbgmgr *pmgr, struct kfd_process *p)
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{
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if (pmgr->pasid != 0) {
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pr_debug("H/W debugger is already active using pasid %d\n",
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pmgr->pasid);
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return -EBUSY;
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}
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/* remember pasid */
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pmgr->pasid = p->pasid;
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/* provide the pqm for diq generation */
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pmgr->dbgdev->pqm = &p->pqm;
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/* activate the actual registering */
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pmgr->dbgdev->dbgdev_register(pmgr->dbgdev);
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return 0;
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}
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long kfd_dbgmgr_unregister(struct kfd_dbgmgr *pmgr, struct kfd_process *p)
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{
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/* Is the requests coming from the already registered process? */
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if (pmgr->pasid != p->pasid) {
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pr_debug("H/W debugger is not registered by calling pasid %d\n",
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p->pasid);
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return -EINVAL;
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}
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pmgr->dbgdev->dbgdev_unregister(pmgr->dbgdev);
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pmgr->pasid = 0;
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return 0;
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}
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long kfd_dbgmgr_wave_control(struct kfd_dbgmgr *pmgr,
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struct dbg_wave_control_info *wac_info)
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{
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/* Is the requests coming from the already registered process? */
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if (pmgr->pasid != wac_info->process->pasid) {
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pr_debug("H/W debugger support was not registered for requester pasid %d\n",
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wac_info->process->pasid);
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return -EINVAL;
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}
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return (long) pmgr->dbgdev->dbgdev_wave_control(pmgr->dbgdev, wac_info);
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}
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long kfd_dbgmgr_address_watch(struct kfd_dbgmgr *pmgr,
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struct dbg_address_watch_info *adw_info)
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{
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/* Is the requests coming from the already registered process? */
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if (pmgr->pasid != adw_info->process->pasid) {
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pr_debug("H/W debugger support was not registered for requester pasid %d\n",
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adw_info->process->pasid);
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return -EINVAL;
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}
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return (long) pmgr->dbgdev->dbgdev_address_watch(pmgr->dbgdev,
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adw_info);
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}
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