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      1 /*	$NetBSD: nouveau_dispnv50_core507d.c,v 1.2 2021/12/18 23:45:32 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2018 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 #include <sys/cdefs.h>
     25 __KERNEL_RCSID(0, "$NetBSD: nouveau_dispnv50_core507d.c,v 1.2 2021/12/18 23:45:32 riastradh Exp $");
     26 
     27 #include "core.h"
     28 #include "head.h"
     29 
     30 #include <nvif/cl507d.h>
     31 
     32 #include "nouveau_bo.h"
     33 
     34 void
     35 core507d_update(struct nv50_core *core, u32 *interlock, bool ntfy)
     36 {
     37 	u32 *push;
     38 	if ((push = evo_wait(&core->chan, 5))) {
     39 		if (ntfy) {
     40 			evo_mthd(push, 0x0084, 1);
     41 			evo_data(push, 0x80000000 | NV50_DISP_CORE_NTFY);
     42 		}
     43 		evo_mthd(push, 0x0080, 2);
     44 		evo_data(push, interlock[NV50_DISP_INTERLOCK_BASE] |
     45 			       interlock[NV50_DISP_INTERLOCK_OVLY]);
     46 		evo_data(push, 0x00000000);
     47 		evo_kick(push, &core->chan);
     48 	}
     49 }
     50 
     51 int
     52 core507d_ntfy_wait_done(struct nouveau_bo *bo, u32 offset,
     53 			struct nvif_device *device)
     54 {
     55 	s64 time = nvif_msec(device, 2000ULL,
     56 		if (nouveau_bo_rd32(bo, offset / 4))
     57 			break;
     58 		usleep_range(1, 2);
     59 	);
     60 	return time < 0 ? time : 0;
     61 }
     62 
     63 void
     64 core507d_ntfy_init(struct nouveau_bo *bo, u32 offset)
     65 {
     66 	nouveau_bo_wr32(bo, offset / 4, 0x00000000);
     67 }
     68 
     69 void
     70 core507d_init(struct nv50_core *core)
     71 {
     72 	u32 *push;
     73 	if ((push = evo_wait(&core->chan, 2))) {
     74 		evo_mthd(push, 0x0088, 1);
     75 		evo_data(push, core->chan.sync.handle);
     76 		evo_kick(push, &core->chan);
     77 	}
     78 }
     79 
     80 static const struct nv50_core_func
     81 core507d = {
     82 	.init = core507d_init,
     83 	.ntfy_init = core507d_ntfy_init,
     84 	.ntfy_wait_done = core507d_ntfy_wait_done,
     85 	.update = core507d_update,
     86 	.head = &head507d,
     87 	.dac = &dac507d,
     88 	.sor = &sor507d,
     89 	.pior = &pior507d,
     90 };
     91 
     92 int
     93 core507d_new_(const struct nv50_core_func *func, struct nouveau_drm *drm,
     94 	      s32 oclass, struct nv50_core **pcore)
     95 {
     96 	struct nv50_disp_core_channel_dma_v0 args = {};
     97 	struct nv50_disp *disp = nv50_disp(drm->dev);
     98 	struct nv50_core *core;
     99 	int ret;
    100 
    101 	if (!(core = *pcore = kzalloc(sizeof(*core), GFP_KERNEL)))
    102 		return -ENOMEM;
    103 	core->func = func;
    104 
    105 	ret = nv50_dmac_create(&drm->client.device, &disp->disp->object,
    106 			       &oclass, 0, &args, sizeof(args),
    107 			       disp->sync->bo.offset, &core->chan);
    108 	if (ret) {
    109 		NV_ERROR(drm, "core%04x allocation failed: %d\n", oclass, ret);
    110 		return ret;
    111 	}
    112 
    113 	return 0;
    114 }
    115 
    116 int
    117 core507d_new(struct nouveau_drm *drm, s32 oclass, struct nv50_core **pcore)
    118 {
    119 	return core507d_new_(&core507d, drm, oclass, pcore);
    120 }
    121