[linux-2.6-block.git] / 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"
#include "kfd_device_queue_manager.h"

static DEFINE_MUTEX(kfd_dbgmgr_mutex);

struct mutex *kfd_get_dbgmgr_mutex(void)
{
	return &kfd_dbgmgr_mutex;
}


static void kfd_dbgmgr_uninitialize(struct kfd_dbgmgr *pmgr)
{
	kfree(pmgr->dbgdev);

	pmgr->dbgdev = NULL;
	pmgr->pasid = 0;
	pmgr->dev = NULL;
}

void kfd_dbgmgr_destroy(struct kfd_dbgmgr *pmgr)
{
	if (pmgr) {
		kfd_dbgmgr_uninitialize(pmgr);
		kfree(pmgr);
	}
}

bool kfd_dbgmgr_create(struct kfd_dbgmgr **ppmgr, struct kfd_dev *pdev)
{
	enum DBGDEV_TYPE type = DBGDEV_TYPE_DIQ;
	struct kfd_dbgmgr *new_buff;

	if (WARN_ON(!pdev->init_complete))
		return false;

	new_buff = kfd_alloc_struct(new_buff);
	if (!new_buff) {
		pr_err("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("Failed to allocate dbgdev instance\n");
		kfree(new_buff);
		return false;
	}

	/* get actual type of DBGDevice cpsch or not */
	if (pdev->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS)
		type = DBGDEV_TYPE_NODIQ;

	kfd_dbgdev_init(new_buff->dbgdev, pdev, type);
	*ppmgr = new_buff;

	return true;
}

long kfd_dbgmgr_register(struct kfd_dbgmgr *pmgr, struct kfd_process *p)
{
	if (pmgr->pasid != 0) {
		pr_debug("H/W debugger is already active using pasid 0x%x\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;
}

long kfd_dbgmgr_unregister(struct kfd_dbgmgr *pmgr, struct kfd_process *p)
{
	/* 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 0x%x\n",
				p->pasid);
		return -EINVAL;
	}

	pmgr->dbgdev->dbgdev_unregister(pmgr->dbgdev);

	pmgr->pasid = 0;

	return 0;
}

long kfd_dbgmgr_wave_control(struct kfd_dbgmgr *pmgr,
				struct dbg_wave_control_info *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 0x%x\n",
				wac_info->process->pasid);
		return -EINVAL;
	}

	return (long) pmgr->dbgdev->dbgdev_wave_control(pmgr->dbgdev, wac_info);
}

long kfd_dbgmgr_address_watch(struct kfd_dbgmgr *pmgr,
				struct dbg_address_watch_info *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 0x%x\n",
				adw_info->process->pasid);
		return -EINVAL;
	}

	return (long) pmgr->dbgdev->dbgdev_address_watch(pmgr->dbgdev,
							adw_info);
}
Commit	Line	Data
fbeb661b YS	1	/*
	2	* Copyright 2014 Advanced Micro Devices, Inc.
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	*/
	23	#include <linux/types.h>
	24	#include <linux/kernel.h>
	25	#include <linux/log2.h>
	26	#include <linux/sched.h>
	27	#include <linux/slab.h>
	28	#include <linux/device.h>
	29
	30	#include "kfd_priv.h"
	31	#include "cik_regs.h"
	32	#include "kfd_pm4_headers.h"
	33	#include "kfd_pm4_headers_diq.h"
	34	#include "kfd_dbgmgr.h"
	35	#include "kfd_dbgdev.h"
d146c5a7	36	#include "kfd_device_queue_manager.h"
fbeb661b YS	37
	38	static DEFINE_MUTEX(kfd_dbgmgr_mutex);
	39
	40	struct mutex *kfd_get_dbgmgr_mutex(void)
	41	{
	42	return &kfd_dbgmgr_mutex;
	43	}
	44
	45
	46	static void kfd_dbgmgr_uninitialize(struct kfd_dbgmgr *pmgr)
	47	{
fbeb661b YS	48	kfree(pmgr->dbgdev);
	49
	50	pmgr->dbgdev = NULL;
	51	pmgr->pasid = 0;
	52	pmgr->dev = NULL;
	53	}
	54
	55	void kfd_dbgmgr_destroy(struct kfd_dbgmgr *pmgr)
	56	{
4eacc26b	57	if (pmgr) {
fbeb661b YS	58	kfd_dbgmgr_uninitialize(pmgr);
	59	kfree(pmgr);
	60	}
	61	}
	62
	63	bool kfd_dbgmgr_create(struct kfd_dbgmgr *ppmgr, struct kfd_dev pdev)
	64	{
	65	enum DBGDEV_TYPE type = DBGDEV_TYPE_DIQ;
	66	struct kfd_dbgmgr *new_buff;
	67
32fa8219 FK	68	if (WARN_ON(!pdev->init_complete))
32fa8219 FK	69	return false;
fbeb661b YS	70
	71	new_buff = kfd_alloc_struct(new_buff);
	72	if (!new_buff) {
79775b62	73	pr_err("Failed to allocate dbgmgr instance\n");
fbeb661b YS	74	return false;
	75	}
	76
	77	new_buff->pasid = 0;
	78	new_buff->dev = pdev;
	79	new_buff->dbgdev = kfd_alloc_struct(new_buff->dbgdev);
	80	if (!new_buff->dbgdev) {
79775b62	81	pr_err("Failed to allocate dbgdev instance\n");
fbeb661b YS	82	kfree(new_buff);
	83	return false;
	84	}
	85
	86	/* get actual type of DBGDevice cpsch or not */
d146c5a7	87	if (pdev->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS)
fbeb661b YS	88	type = DBGDEV_TYPE_NODIQ;
	89
	90	kfd_dbgdev_init(new_buff->dbgdev, pdev, type);
	91	*ppmgr = new_buff;
	92
	93	return true;
	94	}
	95
	96	long kfd_dbgmgr_register(struct kfd_dbgmgr pmgr, struct kfd_process p)
	97	{
fbeb661b	98	if (pmgr->pasid != 0) {
6027b1bf	99	pr_debug("H/W debugger is already active using pasid 0x%x\n",
fbeb661b YS	100	pmgr->pasid);
	101	return -EBUSY;
	102	}
	103
	104	/* remember pasid */
	105	pmgr->pasid = p->pasid;
	106
	107	/* provide the pqm for diq generation */
	108	pmgr->dbgdev->pqm = &p->pqm;
	109
	110	/* activate the actual registering */
	111	pmgr->dbgdev->dbgdev_register(pmgr->dbgdev);
	112
	113	return 0;
	114	}
	115
	116	long kfd_dbgmgr_unregister(struct kfd_dbgmgr pmgr, struct kfd_process p)
	117	{
fbeb661b YS	118	/* Is the requests coming from the already registered process? */
fbeb661b YS	119	if (pmgr->pasid != p->pasid) {
6027b1bf	120	pr_debug("H/W debugger is not registered by calling pasid 0x%x\n",
fbeb661b YS	121	p->pasid);
	122	return -EINVAL;
	123	}
	124
	125	pmgr->dbgdev->dbgdev_unregister(pmgr->dbgdev);
	126
	127	pmgr->pasid = 0;
	128
	129	return 0;
	130	}
788bf83d YS	131
	132	long kfd_dbgmgr_wave_control(struct kfd_dbgmgr *pmgr,
	133	struct dbg_wave_control_info *wac_info)
	134	{
788bf83d YS	135	/* Is the requests coming from the already registered process? */
788bf83d YS	136	if (pmgr->pasid != wac_info->process->pasid) {
6027b1bf	137	pr_debug("H/W debugger support was not registered for requester pasid 0x%x\n",
788bf83d YS	138	wac_info->process->pasid);
	139	return -EINVAL;
	140	}
	141
	142	return (long) pmgr->dbgdev->dbgdev_wave_control(pmgr->dbgdev, wac_info);
	143	}
	144
e2e9afc4 YS	145	long kfd_dbgmgr_address_watch(struct kfd_dbgmgr *pmgr,
	146	struct dbg_address_watch_info *adw_info)
	147	{
e2e9afc4 YS	148	/* Is the requests coming from the already registered process? */
e2e9afc4 YS	149	if (pmgr->pasid != adw_info->process->pasid) {
6027b1bf	150	pr_debug("H/W debugger support was not registered for requester pasid 0x%x\n",
e2e9afc4 YS	151	adw_info->process->pasid);
	152	return -EINVAL;
	153	}
	154
	155	return (long) pmgr->dbgdev->dbgdev_address_watch(pmgr->dbgdev,
	156	adw_info);
	157	}
	158