[deliverable/linux.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"

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)
{
	BUG_ON(!pmgr);

	kfree(pmgr->dbgdev);

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

void kfd_dbgmgr_destroy(struct kfd_dbgmgr *pmgr)
{
	if (pmgr != NULL) {
		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;

	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;
}

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;
}

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;
}

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);
}

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);
}
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"
	36
	37	static DEFINE_MUTEX(kfd_dbgmgr_mutex);
	38
	39	struct mutex *kfd_get_dbgmgr_mutex(void)
	40	{
	41	return &kfd_dbgmgr_mutex;
	42	}
	43
	44
	45	static void kfd_dbgmgr_uninitialize(struct kfd_dbgmgr *pmgr)
	46	{
	47	BUG_ON(!pmgr);
	48
	49	kfree(pmgr->dbgdev);
	50
	51	pmgr->dbgdev = NULL;
	52	pmgr->pasid = 0;
	53	pmgr->dev = NULL;
	54	}
	55
	56	void kfd_dbgmgr_destroy(struct kfd_dbgmgr *pmgr)
	57	{
	58	if (pmgr != NULL) {
	59	kfd_dbgmgr_uninitialize(pmgr);
	60	kfree(pmgr);
	61	}
	62	}
	63
	64	bool kfd_dbgmgr_create(struct kfd_dbgmgr *ppmgr, struct kfd_dev pdev)
65	{
66	enum DBGDEV_TYPE type = DBGDEV_TYPE_DIQ;
67	struct kfd_dbgmgr *new_buff;
68
69	BUG_ON(pdev == NULL);
70	BUG_ON(!pdev->init_complete);
71
72	new_buff = kfd_alloc_struct(new_buff);
73	if (!new_buff) {
74	pr_err("amdkfd: Failed to allocate dbgmgr instance\n");
75	return false;
76	}
77
78	new_buff->pasid = 0;
79	new_buff->dev = pdev;
80	new_buff->dbgdev = kfd_alloc_struct(new_buff->dbgdev);
81	if (!new_buff->dbgdev) {
82	pr_err("amdkfd: Failed to allocate dbgdev instance\n");
83	kfree(new_buff);
84	return false;
85	}
86
87	/* get actual type of DBGDevice cpsch or not */
88	if (sched_policy == KFD_SCHED_POLICY_NO_HWS)
89	type = DBGDEV_TYPE_NODIQ;
90
91	kfd_dbgdev_init(new_buff->dbgdev, pdev, type);
92	*ppmgr = new_buff;
93
94	return true;
95	}
96
97	long kfd_dbgmgr_register(struct kfd_dbgmgr pmgr, struct kfd_process p)
98	{
99	BUG_ON(!p \|\| !pmgr \|\| !pmgr->dbgdev);
100
101	if (pmgr->pasid != 0) {
102	pr_debug("H/W debugger is already active using pasid %d\n",
103	pmgr->pasid);
104	return -EBUSY;
105	}
106
107	/* remember pasid */
108	pmgr->pasid = p->pasid;
109
110	/* provide the pqm for diq generation */
111	pmgr->dbgdev->pqm = &p->pqm;
112
113	/* activate the actual registering */
114	pmgr->dbgdev->dbgdev_register(pmgr->dbgdev);
115
116	return 0;
117	}
118
119	long kfd_dbgmgr_unregister(struct kfd_dbgmgr pmgr, struct kfd_process p)
120	{
121	BUG_ON(!p \|\| !pmgr \|\| !pmgr->dbgdev);
122
123	/* Is the requests coming from the already registered process? */
124	if (pmgr->pasid != p->pasid) {
125	pr_debug("H/W debugger is not registered by calling pasid %d\n",
126	p->pasid);
127	return -EINVAL;
128	}
129
130	pmgr->dbgdev->dbgdev_unregister(pmgr->dbgdev);
131
132	pmgr->pasid = 0;
133
134	return 0;
135	}
788bf83d YS	136
	137	long kfd_dbgmgr_wave_control(struct kfd_dbgmgr *pmgr,
	138	struct dbg_wave_control_info *wac_info)
	139	{
	140	BUG_ON(!pmgr \|\| !pmgr->dbgdev \|\| !wac_info);
	141
	142	/* Is the requests coming from the already registered process? */
	143	if (pmgr->pasid != wac_info->process->pasid) {
	144	pr_debug("H/W debugger support was not registered for requester pasid %d\n",
	145	wac_info->process->pasid);
	146	return -EINVAL;
	147	}
	148
	149	return (long) pmgr->dbgdev->dbgdev_wave_control(pmgr->dbgdev, wac_info);
	150	}
	151
e2e9afc4 YS	152	long kfd_dbgmgr_address_watch(struct kfd_dbgmgr *pmgr,
	153	struct dbg_address_watch_info *adw_info)
	154	{
	155	BUG_ON(!pmgr \|\| !pmgr->dbgdev \|\| !adw_info);
	156
	157
	158	/* Is the requests coming from the already registered process? */
	159	if (pmgr->pasid != adw_info->process->pasid) {
	160	pr_debug("H/W debugger support was not registered for requester pasid %d\n",
	161	adw_info->process->pasid);
	162	return -EINVAL;
	163	}
	164
	165	return (long) pmgr->dbgdev->dbgdev_address_watch(pmgr->dbgdev,
	166	adw_info);
	167	}
	168