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      1 /*	$NetBSD: nouveau_nvkm_subdev_ltc_gp10b.c,v 1.3 2021/12/19 10:51:58 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2019 NVIDIA Corporation.
      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: Thierry Reding
     25  */
     26 
     27 #include <sys/cdefs.h>
     28 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_ltc_gp10b.c,v 1.3 2021/12/19 10:51:58 riastradh Exp $");
     29 
     30 #include "priv.h"
     31 
     32 static void
     33 gp10b_ltc_init(struct nvkm_ltc *ltc)
     34 {
     35 	struct nvkm_device *device = ltc->subdev.device;
     36 	struct iommu_fwspec *spec;
     37 
     38 	nvkm_wr32(device, 0x17e27c, ltc->ltc_nr);
     39 	nvkm_wr32(device, 0x17e000, ltc->ltc_nr);
     40 	nvkm_wr32(device, 0x100800, ltc->ltc_nr);
     41 
     42 #ifdef __NetBSD__		/* XXX arm64 iort smmu iommu */
     43 	__USE(spec);
     44 #else
     45 	spec = dev_iommu_fwspec_get(device->dev);
     46 	if (spec) {
     47 		u32 sid = spec->ids[0] & 0xffff;
     48 
     49 		/* stream ID */
     50 		nvkm_wr32(device, 0x160000, sid << 2);
     51 	}
     52 #endif
     53 }
     54 
     55 static const struct nvkm_ltc_func
     56 gp10b_ltc = {
     57 	.oneinit = gp100_ltc_oneinit,
     58 	.init = gp10b_ltc_init,
     59 	.intr = gp100_ltc_intr,
     60 	.cbc_clear = gm107_ltc_cbc_clear,
     61 	.cbc_wait = gm107_ltc_cbc_wait,
     62 	.zbc = 16,
     63 	.zbc_clear_color = gm107_ltc_zbc_clear_color,
     64 	.zbc_clear_depth = gm107_ltc_zbc_clear_depth,
     65 	.zbc_clear_stencil = gp102_ltc_zbc_clear_stencil,
     66 	.invalidate = gf100_ltc_invalidate,
     67 	.flush = gf100_ltc_flush,
     68 };
     69 
     70 int
     71 gp10b_ltc_new(struct nvkm_device *device, int index, struct nvkm_ltc **pltc)
     72 {
     73 	return nvkm_ltc_new_(&gp10b_ltc, device, index, pltc);
     74 }
     75