ctrl.c

 1/*
 2 * Copyright 2023 Red Hat 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#include <rm/rpc.h>
23
24#include "nvrm/ctrl.h"
25#include "nvrm/rpcfn.h"
26
27static void
28r535_gsp_rpc_rm_ctrl_done(struct nvkm_gsp_object *object, void *params)
29{
30	rpc_gsp_rm_control_v03_00 *rpc = to_payload_hdr(params, rpc);
31
32	if (!params)
33		return;
34	nvkm_gsp_rpc_done(object->client->gsp, rpc);
35}
36
37static int
38r535_gsp_rpc_rm_ctrl_push(struct nvkm_gsp_object *object, void **params, u32 repc)
39{
40	rpc_gsp_rm_control_v03_00 *rpc = to_payload_hdr((*params), rpc);
41	struct nvkm_gsp *gsp = object->client->gsp;
42	int ret = 0;
43
44	rpc = nvkm_gsp_rpc_push(gsp, rpc, NVKM_GSP_RPC_REPLY_RECV, repc);
45	if (IS_ERR_OR_NULL(rpc)) {
46		*params = NULL;
47		return PTR_ERR(rpc);
48	}
49
50	if (rpc->status) {
51		ret = r535_rpc_status_to_errno(rpc->status);
52		if (ret != -EAGAIN && ret != -EBUSY)
53			nvkm_error(&gsp->subdev, "cli:0x%08x obj:0x%08x ctrl cmd:0x%08x failed: 0x%08x\n",
54				   object->client->object.handle, object->handle, rpc->cmd, rpc->status);
55	}
56
57	if (repc)
58		*params = rpc->params;
59	else
60		nvkm_gsp_rpc_done(gsp, rpc);
61
62	return ret;
63}
64
65static void *
66r535_gsp_rpc_rm_ctrl_get(struct nvkm_gsp_object *object, u32 cmd, u32 params_size)
67{
68	struct nvkm_gsp_client *client = object->client;
69	struct nvkm_gsp *gsp = client->gsp;
70	rpc_gsp_rm_control_v03_00 *rpc;
71
72	nvkm_debug(&gsp->subdev, "cli:0x%08x obj:0x%08x ctrl cmd:0x%08x params_size:%d\n",
73		   client->object.handle, object->handle, cmd, params_size);
74
75	rpc = nvkm_gsp_rpc_get(gsp, NV_VGPU_MSG_FUNCTION_GSP_RM_CONTROL,
76			       sizeof(*rpc) + params_size);
77	if (IS_ERR(rpc))
78		return rpc;
79
80	rpc->hClient    = client->object.handle;
81	rpc->hObject    = object->handle;
82	rpc->cmd	= cmd;
83	rpc->status     = 0;
84	rpc->paramsSize = params_size;
85	return rpc->params;
86}
87
88const struct nvkm_rm_api_ctrl
89r535_ctrl = {
90	.get = r535_gsp_rpc_rm_ctrl_get,
91	.push = r535_gsp_rpc_rm_ctrl_push,
92	.done = r535_gsp_rpc_rm_ctrl_done,
93};