Release 4.11 drivers/gpu/drm/amd/amdkfd/kfd_dbgmgr.c
/*
* Copyright 2014 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
*/
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/log2.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/device.h>
#include "kfd_priv.h"
#include "cik_regs.h"
#include "kfd_pm4_headers.h"
#include "kfd_pm4_headers_diq.h"
#include "kfd_dbgmgr.h"
#include "kfd_dbgdev.h"
static DEFINE_MUTEX(kfd_dbgmgr_mutex);
struct mutex *kfd_get_dbgmgr_mutex(void)
{
return &kfd_dbgmgr_mutex;
}
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static void kfd_dbgmgr_uninitialize(struct kfd_dbgmgr *pmgr)
{
BUG_ON(!pmgr);
kfree(pmgr->dbgdev);
pmgr->dbgdev = NULL;
pmgr->pasid = 0;
pmgr->dev = NULL;
}
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void kfd_dbgmgr_destroy(struct kfd_dbgmgr *pmgr)
{
if (pmgr != NULL) {
kfd_dbgmgr_uninitialize(pmgr);
kfree(pmgr);
}
}
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bool kfd_dbgmgr_create(struct kfd_dbgmgr **ppmgr, struct kfd_dev *pdev)
{
enum DBGDEV_TYPE type = DBGDEV_TYPE_DIQ;
struct kfd_dbgmgr *new_buff;
BUG_ON(pdev == NULL);
BUG_ON(!pdev->init_complete);
new_buff = kfd_alloc_struct(new_buff);
if (!new_buff) {
pr_err("amdkfd: Failed to allocate dbgmgr instance\n");
return false;
}
new_buff->pasid = 0;
new_buff->dev = pdev;
new_buff->dbgdev = kfd_alloc_struct(new_buff->dbgdev);
if (!new_buff->dbgdev) {
pr_err("amdkfd: Failed to allocate dbgdev instance\n");
kfree(new_buff);
return false;
}
/* get actual type of DBGDevice cpsch or not */
if (sched_policy == KFD_SCHED_POLICY_NO_HWS)
type = DBGDEV_TYPE_NODIQ;
kfd_dbgdev_init(new_buff->dbgdev, pdev, type);
*ppmgr = new_buff;
return true;
}
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long kfd_dbgmgr_register(struct kfd_dbgmgr *pmgr, struct kfd_process *p)
{
BUG_ON(!p || !pmgr || !pmgr->dbgdev);
if (pmgr->pasid != 0) {
pr_debug("H/W debugger is already active using pasid %d\n",
pmgr->pasid);
return -EBUSY;
}
/* remember pasid */
pmgr->pasid = p->pasid;
/* provide the pqm for diq generation */
pmgr->dbgdev->pqm = &p->pqm;
/* activate the actual registering */
pmgr->dbgdev->dbgdev_register(pmgr->dbgdev);
return 0;
}
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long kfd_dbgmgr_unregister(struct kfd_dbgmgr *pmgr, struct kfd_process *p)
{
BUG_ON(!p || !pmgr || !pmgr->dbgdev);
/* Is the requests coming from the already registered process? */
if (pmgr->pasid != p->pasid) {
pr_debug("H/W debugger is not registered by calling pasid %d\n",
p->pasid);
return -EINVAL;
}
pmgr->dbgdev->dbgdev_unregister(pmgr->dbgdev);
pmgr->pasid = 0;
return 0;
}
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long kfd_dbgmgr_wave_control(struct kfd_dbgmgr *pmgr,
struct dbg_wave_control_info *wac_info)
{
BUG_ON(!pmgr || !pmgr->dbgdev || !wac_info);
/* Is the requests coming from the already registered process? */
if (pmgr->pasid != wac_info->process->pasid) {
pr_debug("H/W debugger support was not registered for requester pasid %d\n",
wac_info->process->pasid);
return -EINVAL;
}
return (long) pmgr->dbgdev->dbgdev_wave_control(pmgr->dbgdev, wac_info);
}
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long kfd_dbgmgr_address_watch(struct kfd_dbgmgr *pmgr,
struct dbg_address_watch_info *adw_info)
{
BUG_ON(!pmgr || !pmgr->dbgdev || !adw_info);
/* Is the requests coming from the already registered process? */
if (pmgr->pasid != adw_info->process->pasid) {
pr_debug("H/W debugger support was not registered for requester pasid %d\n",
adw_info->process->pasid);
return -EINVAL;
}
return (long) pmgr->dbgdev->dbgdev_address_watch(pmgr->dbgdev,
adw_info);
}
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