[mirror_ubuntu-jammy-kernel.git] / drivers / gpu / drm / amd / amdgpu / amdgpu_xgmi.c

/*
 * Copyright 2018 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/list.h>
#include "amdgpu.h"
#include "amdgpu_psp.h"


static DEFINE_MUTEX(xgmi_mutex);

#define AMDGPU_MAX_XGMI_HIVE			8
#define AMDGPU_MAX_XGMI_DEVICE_PER_HIVE		4

struct amdgpu_hive_info {
	uint64_t		hive_id;
	struct list_head	device_list;
};

static struct amdgpu_hive_info xgmi_hives[AMDGPU_MAX_XGMI_HIVE];
static unsigned hive_count = 0;

static struct amdgpu_hive_info *amdgpu_get_xgmi_hive(struct amdgpu_device *adev)
{
	int i;
	struct amdgpu_hive_info *tmp;

	if (!adev->gmc.xgmi.hive_id)
		return NULL;
	for (i = 0 ; i < hive_count; ++i) {
		tmp = &xgmi_hives[i];
		if (tmp->hive_id == adev->gmc.xgmi.hive_id)
			return tmp;
	}
	if (i >= AMDGPU_MAX_XGMI_HIVE)
		return NULL;

	/* initialize new hive if not exist */
	tmp = &xgmi_hives[hive_count++];
	tmp->hive_id = adev->gmc.xgmi.hive_id;
	INIT_LIST_HEAD(&tmp->device_list);
	return tmp;
}

int amdgpu_xgmi_add_device(struct amdgpu_device *adev)
{
	struct psp_xgmi_topology_info tmp_topology[AMDGPU_MAX_XGMI_DEVICE_PER_HIVE];
	struct amdgpu_hive_info *hive;
	struct amdgpu_xgmi	*entry;
	struct amdgpu_device 	*tmp_adev;

	int count = 0, ret = -EINVAL;

	if ((adev->asic_type < CHIP_VEGA20) ||
		(adev->flags & AMD_IS_APU) )
		return 0;
	adev->gmc.xgmi.device_id = psp_xgmi_get_device_id(&adev->psp);
	adev->gmc.xgmi.hive_id = psp_xgmi_get_hive_id(&adev->psp);

	memset(&tmp_topology[0], 0, sizeof(tmp_topology));
	mutex_lock(&xgmi_mutex);
	hive = amdgpu_get_xgmi_hive(adev);
	if (!hive)
		goto exit;

	list_add_tail(&adev->gmc.xgmi.head, &hive->device_list);
	list_for_each_entry(entry, &hive->device_list, head)
		tmp_topology[count++].device_id = entry->device_id;

	ret = psp_xgmi_get_topology_info(&adev->psp, count, tmp_topology);
	if (ret) {
		dev_err(adev->dev,
			"XGMI: Get topology failure on device %llx, hive %llx, ret %d",
			adev->gmc.xgmi.device_id,
			adev->gmc.xgmi.hive_id, ret);
		goto exit;
	}
	/* Each psp need to set the latest topology */
	list_for_each_entry(tmp_adev, &hive->device_list, gmc.xgmi.head) {
		ret = psp_xgmi_set_topology_info(&tmp_adev->psp, count, tmp_topology);
		if (ret) {
			dev_err(tmp_adev->dev,
				"XGMI: Set topology failure on device %llx, hive %llx, ret %d",
				tmp_adev->gmc.xgmi.device_id,
				tmp_adev->gmc.xgmi.hive_id, ret);
			/* To do : continue with some  node failed or disable the  whole  hive */
			break;
		}
	}
	if (!ret)
		dev_info(adev->dev, "XGMI: Add node %d to hive 0x%llx.\n",
			adev->gmc.xgmi.physical_node_id,
			adev->gmc.xgmi.hive_id);

exit:
	mutex_unlock(&xgmi_mutex);
	return ret;
}
Commit	Line	Data
fb30fc59 SL	1	/*
	2	* Copyright 2018 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	*/
	24	#include <linux/list.h>
	25	#include "amdgpu.h"
	26	#include "amdgpu_psp.h"
	27
	28
	29	static DEFINE_MUTEX(xgmi_mutex);
	30
	31	#define AMDGPU_MAX_XGMI_HIVE 8
	32	#define AMDGPU_MAX_XGMI_DEVICE_PER_HIVE 4
	33
	34	struct amdgpu_hive_info {
	35	uint64_t hive_id;
	36	struct list_head device_list;
	37	};
	38
	39	static struct amdgpu_hive_info xgmi_hives[AMDGPU_MAX_XGMI_HIVE];
	40	static unsigned hive_count = 0;
	41
	42	static struct amdgpu_hive_info amdgpu_get_xgmi_hive(struct amdgpu_device adev)
	43	{
	44	int i;
	45	struct amdgpu_hive_info *tmp;
	46
	47	if (!adev->gmc.xgmi.hive_id)
	48	return NULL;
	49	for (i = 0 ; i < hive_count; ++i) {
	50	tmp = &xgmi_hives[i];
	51	if (tmp->hive_id == adev->gmc.xgmi.hive_id)
	52	return tmp;
	53	}
	54	if (i >= AMDGPU_MAX_XGMI_HIVE)
	55	return NULL;
	56
	57	/* initialize new hive if not exist */
	58	tmp = &xgmi_hives[hive_count++];
	59	tmp->hive_id = adev->gmc.xgmi.hive_id;
	60	INIT_LIST_HEAD(&tmp->device_list);
	61	return tmp;
	62	}
	63
	64	int amdgpu_xgmi_add_device(struct amdgpu_device *adev)
65	{
66	struct psp_xgmi_topology_info tmp_topology[AMDGPU_MAX_XGMI_DEVICE_PER_HIVE];
67	struct amdgpu_hive_info *hive;
68	struct amdgpu_xgmi *entry;
69	struct amdgpu_device *tmp_adev;
70
71	int count = 0, ret = -EINVAL;
72
73	if ((adev->asic_type < CHIP_VEGA20) \|\|
74	(adev->flags & AMD_IS_APU) )
75	return 0;
76	adev->gmc.xgmi.device_id = psp_xgmi_get_device_id(&adev->psp);
77	adev->gmc.xgmi.hive_id = psp_xgmi_get_hive_id(&adev->psp);
78
79	memset(&tmp_topology[0], 0, sizeof(tmp_topology));
80	mutex_lock(&xgmi_mutex);
81	hive = amdgpu_get_xgmi_hive(adev);
82	if (!hive)
83	goto exit;
84
85	list_add_tail(&adev->gmc.xgmi.head, &hive->device_list);
86	list_for_each_entry(entry, &hive->device_list, head)
87	tmp_topology[count++].device_id = entry->device_id;
88
89	ret = psp_xgmi_get_topology_info(&adev->psp, count, tmp_topology);
90	if (ret) {
91	dev_err(adev->dev,
92	"XGMI: Get topology failure on device %llx, hive %llx, ret %d",
93	adev->gmc.xgmi.device_id,
94	adev->gmc.xgmi.hive_id, ret);
95	goto exit;
96	}
97	/* Each psp need to set the latest topology */
98	list_for_each_entry(tmp_adev, &hive->device_list, gmc.xgmi.head) {
99	ret = psp_xgmi_set_topology_info(&tmp_adev->psp, count, tmp_topology);
100	if (ret) {
101	dev_err(tmp_adev->dev,
102	"XGMI: Set topology failure on device %llx, hive %llx, ret %d",
103	tmp_adev->gmc.xgmi.device_id,
104	tmp_adev->gmc.xgmi.hive_id, ret);
105	/* To do : continue with some node failed or disable the whole hive */
106	break;
107	}
108	}
109	if (!ret)
110	dev_info(adev->dev, "XGMI: Add node %d to hive 0x%llx.\n",
111	adev->gmc.xgmi.physical_node_id,
112	adev->gmc.xgmi.hive_id);
113
114	exit:
115	mutex_unlock(&xgmi_mutex);
116	return ret;
117	}
118
119