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      1 /*	$NetBSD: nouveau_nvkm_engine_disp_ior.c,v 1.2 2021/12/18 23:45:35 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2017 Red Hat Inc.
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: Ben Skeggs <bskeggs (at) redhat.com>
     25  */
     26 #include <sys/cdefs.h>
     27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_engine_disp_ior.c,v 1.2 2021/12/18 23:45:35 riastradh Exp $");
     28 
     29 #include "ior.h"
     30 
     31 static const char *
     32 nvkm_ior_name[] = {
     33 	[DAC] = "DAC",
     34 	[SOR] = "SOR",
     35 	[PIOR] = "PIOR",
     36 };
     37 
     38 struct nvkm_ior *
     39 nvkm_ior_find(struct nvkm_disp *disp, enum nvkm_ior_type type, int id)
     40 {
     41 	struct nvkm_ior *ior;
     42 	list_for_each_entry(ior, &disp->ior, head) {
     43 		if (ior->type == type && (id < 0 || ior->id == id))
     44 			return ior;
     45 	}
     46 	return NULL;
     47 }
     48 
     49 void
     50 nvkm_ior_del(struct nvkm_ior **pior)
     51 {
     52 	struct nvkm_ior *ior = *pior;
     53 	if (ior) {
     54 		IOR_DBG(ior, "dtor");
     55 		list_del(&ior->head);
     56 		kfree(*pior);
     57 		*pior = NULL;
     58 	}
     59 }
     60 
     61 int
     62 nvkm_ior_new_(const struct nvkm_ior_func *func, struct nvkm_disp *disp,
     63 	      enum nvkm_ior_type type, int id)
     64 {
     65 	struct nvkm_ior *ior;
     66 	if (!(ior = kzalloc(sizeof(*ior), GFP_KERNEL)))
     67 		return -ENOMEM;
     68 	ior->func = func;
     69 	ior->disp = disp;
     70 	ior->type = type;
     71 	ior->id = id;
     72 	snprintf(ior->name, sizeof(ior->name), "%s-%d",
     73 		 nvkm_ior_name[ior->type], ior->id);
     74 	list_add_tail(&ior->head, &disp->ior);
     75 	IOR_DBG(ior, "ctor");
     76 	return 0;
     77 }
     78