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nouveau_nvif.c revision 1.1 
      1 /*	$NetBSD: nouveau_nvif.c,v 1.1 2018/08/27 01:34:55 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2014 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 
     27 /*******************************************************************************
     28  * NVIF client driver - NVKM directly linked
     29  ******************************************************************************/
     30 
     31 #include <sys/cdefs.h>
     32 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvif.c,v 1.1 2018/08/27 01:34:55 riastradh Exp $");
     33 
     34 #include <core/client.h>
     35 #include <core/notify.h>
     36 #include <core/ioctl.h>
     37 
     38 #include <nvif/client.h>
     39 #include <nvif/driver.h>
     40 #include <nvif/notify.h>
     41 #include <nvif/event.h>
     42 #include <nvif/ioctl.h>
     43 
     44 #include "nouveau_drm.h"
     45 #include "nouveau_usif.h"
     46 
     47 static void
     48 nvkm_client_unmap(void *priv, void __iomem *ptr, u32 size)
     49 {
     50 	iounmap(ptr);
     51 }
     52 
     53 static void __iomem *
     54 nvkm_client_map(void *priv, u64 handle, u32 size)
     55 {
     56 	return ioremap(handle, size);
     57 }
     58 
     59 static int
     60 nvkm_client_ioctl(void *priv, bool super, void *data, u32 size, void **hack)
     61 {
     62 	return nvkm_ioctl(priv, super, data, size, hack);
     63 }
     64 
     65 static int
     66 nvkm_client_resume(void *priv)
     67 {
     68 	return nvkm_client_init(priv);
     69 }
     70 
     71 static int
     72 nvkm_client_suspend(void *priv)
     73 {
     74 	return nvkm_client_fini(priv, true);
     75 }
     76 
     77 static void
     78 nvkm_client_driver_fini(void *priv)
     79 {
     80 	struct nvkm_client *client = priv;
     81 	nvkm_client_del(&client);
     82 }
     83 
     84 static int
     85 nvkm_client_ntfy(const void *header, u32 length, const void *data, u32 size)
     86 {
     87 	const union {
     88 		struct nvif_notify_req_v0 v0;
     89 	} *args = header;
     90 	u8 route;
     91 
     92 	if (length == sizeof(args->v0) && args->v0.version == 0) {
     93 		route = args->v0.route;
     94 	} else {
     95 		WARN_ON(1);
     96 		return NVKM_NOTIFY_DROP;
     97 	}
     98 
     99 	switch (route) {
    100 	case NVDRM_NOTIFY_NVIF:
    101 		return nvif_notify(header, length, data, size);
    102 	case NVDRM_NOTIFY_USIF:
    103 		return usif_notify(header, length, data, size);
    104 	default:
    105 		WARN_ON(1);
    106 		break;
    107 	}
    108 
    109 	return NVKM_NOTIFY_DROP;
    110 }
    111 
    112 static int
    113 nvkm_client_driver_init(const char *name, u64 device, const char *cfg,
    114 			const char *dbg, void **ppriv)
    115 {
    116 	struct nvkm_client *client;
    117 	int ret;
    118 
    119 	ret = nvkm_client_new(name, device, cfg, dbg, &client);
    120 	*ppriv = client;
    121 	if (ret)
    122 		return ret;
    123 
    124 	client->ntfy = nvkm_client_ntfy;
    125 	return 0;
    126 }
    127 
    128 const struct nvif_driver
    129 nvif_driver_nvkm = {
    130 	.name = "nvkm",
    131 	.init = nvkm_client_driver_init,
    132 	.fini = nvkm_client_driver_fini,
    133 	.suspend = nvkm_client_suspend,
    134 	.resume = nvkm_client_resume,
    135 	.ioctl = nvkm_client_ioctl,
    136 	.map = nvkm_client_map,
    137 	.unmap = nvkm_client_unmap,
    138 	.keep = false,
    139 };
    140