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      1 /*	$NetBSD: nouveau_nvkm_subdev_ltc_gp100.c,v 1.2 2021/12/18 23:45:40 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2016 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
     25  */
     26 #include <sys/cdefs.h>
     27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_ltc_gp100.c,v 1.2 2021/12/18 23:45:40 riastradh Exp $");
     28 
     29 #include "priv.h"
     30 
     31 void
     32 gp100_ltc_intr(struct nvkm_ltc *ltc)
     33 {
     34 	struct nvkm_device *device = ltc->subdev.device;
     35 	u32 mask;
     36 
     37 	mask = nvkm_rd32(device, 0x0001c0);
     38 	while (mask) {
     39 		u32 s, c = __ffs(mask);
     40 		for (s = 0; s < ltc->lts_nr; s++)
     41 			gm107_ltc_intr_lts(ltc, c, s);
     42 		mask &= ~(1 << c);
     43 	}
     44 }
     45 
     46 int
     47 gp100_ltc_oneinit(struct nvkm_ltc *ltc)
     48 {
     49 	struct nvkm_device *device = ltc->subdev.device;
     50 	ltc->ltc_nr = nvkm_rd32(device, 0x12006c);
     51 	ltc->lts_nr = nvkm_rd32(device, 0x17e280) >> 28;
     52 	/*XXX: tagram allocation - TBD */
     53 	return 0;
     54 }
     55 
     56 void
     57 gp100_ltc_init(struct nvkm_ltc *ltc)
     58 {
     59 	/*XXX: PMU LS call to setup tagram address */
     60 }
     61 
     62 static const struct nvkm_ltc_func
     63 gp100_ltc = {
     64 	.oneinit = gp100_ltc_oneinit,
     65 	.init = gp100_ltc_init,
     66 	.intr = gp100_ltc_intr,
     67 	.cbc_clear = gm107_ltc_cbc_clear,
     68 	.cbc_wait = gm107_ltc_cbc_wait,
     69 	.zbc = 16,
     70 	.zbc_clear_color = gm107_ltc_zbc_clear_color,
     71 	.zbc_clear_depth = gm107_ltc_zbc_clear_depth,
     72 	.invalidate = gf100_ltc_invalidate,
     73 	.flush = gf100_ltc_flush,
     74 };
     75 
     76 int
     77 gp100_ltc_new(struct nvkm_device *device, int index, struct nvkm_ltc **pltc)
     78 {
     79 	return nvkm_ltc_new_(&gp100_ltc, device, index, pltc);
     80 }
     81