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      1 /*	$NetBSD: nouveau_nvkm_subdev_ltc_gm107.c,v 1.3 2021/12/18 23:45:40 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
     25  */
     26 #include <sys/cdefs.h>
     27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_ltc_gm107.c,v 1.3 2021/12/18 23:45:40 riastradh Exp $");
     28 
     29 #include "priv.h"
     30 
     31 #include <subdev/fb.h>
     32 #include <subdev/timer.h>
     33 
     34 void
     35 gm107_ltc_cbc_clear(struct nvkm_ltc *ltc, u32 start, u32 limit)
     36 {
     37 	struct nvkm_device *device = ltc->subdev.device;
     38 	nvkm_wr32(device, 0x17e270, start);
     39 	nvkm_wr32(device, 0x17e274, limit);
     40 	nvkm_mask(device, 0x17e26c, 0x00000000, 0x00000004);
     41 }
     42 
     43 void
     44 gm107_ltc_cbc_wait(struct nvkm_ltc *ltc)
     45 {
     46 	struct nvkm_device *device = ltc->subdev.device;
     47 	int c, s;
     48 	for (c = 0; c < ltc->ltc_nr; c++) {
     49 		for (s = 0; s < ltc->lts_nr; s++) {
     50 			const u32 addr = 0x14046c + (c * 0x2000) + (s * 0x200);
     51 			nvkm_wait_msec(device, 2000, addr,
     52 				       0x00000004, 0x00000000);
     53 		}
     54 	}
     55 }
     56 
     57 void
     58 gm107_ltc_zbc_clear_color(struct nvkm_ltc *ltc, int i, const u32 color[4])
     59 {
     60 	struct nvkm_device *device = ltc->subdev.device;
     61 	nvkm_mask(device, 0x17e338, 0x0000000f, i);
     62 	nvkm_wr32(device, 0x17e33c, color[0]);
     63 	nvkm_wr32(device, 0x17e340, color[1]);
     64 	nvkm_wr32(device, 0x17e344, color[2]);
     65 	nvkm_wr32(device, 0x17e348, color[3]);
     66 }
     67 
     68 void
     69 gm107_ltc_zbc_clear_depth(struct nvkm_ltc *ltc, int i, const u32 depth)
     70 {
     71 	struct nvkm_device *device = ltc->subdev.device;
     72 	nvkm_mask(device, 0x17e338, 0x0000000f, i);
     73 	nvkm_wr32(device, 0x17e34c, depth);
     74 }
     75 
     76 void
     77 gm107_ltc_intr_lts(struct nvkm_ltc *ltc, int c, int s)
     78 {
     79 	struct nvkm_subdev *subdev = &ltc->subdev;
     80 	struct nvkm_device *device = subdev->device;
     81 	u32 base = 0x140400 + (c * 0x2000) + (s * 0x200);
     82 	u32 intr = nvkm_rd32(device, base + 0x00c);
     83 	u16 stat = intr & 0x0000ffff;
     84 	char msg[128];
     85 
     86 	if (stat) {
     87 		nvkm_snprintbf(msg, sizeof(msg), gf100_ltc_lts_intr_name, stat);
     88 		nvkm_error(subdev, "LTC%d_LTS%d: %08x [%s]\n", c, s, intr, msg);
     89 	}
     90 
     91 	nvkm_wr32(device, base + 0x00c, intr);
     92 }
     93 
     94 void
     95 gm107_ltc_intr(struct nvkm_ltc *ltc)
     96 {
     97 	struct nvkm_device *device = ltc->subdev.device;
     98 	u32 mask;
     99 
    100 	mask = nvkm_rd32(device, 0x00017c);
    101 	while (mask) {
    102 		u32 s, c = __ffs(mask);
    103 		for (s = 0; s < ltc->lts_nr; s++)
    104 			gm107_ltc_intr_lts(ltc, c, s);
    105 		mask &= ~(1 << c);
    106 	}
    107 }
    108 
    109 static int
    110 gm107_ltc_oneinit(struct nvkm_ltc *ltc)
    111 {
    112 	struct nvkm_device *device = ltc->subdev.device;
    113 	const u32 parts = nvkm_rd32(device, 0x022438);
    114 	const u32  mask = nvkm_rd32(device, 0x021c14);
    115 	const u32 slice = nvkm_rd32(device, 0x17e280) >> 28;
    116 	int i;
    117 
    118 	for (i = 0; i < parts; i++) {
    119 		if (!(mask & (1 << i)))
    120 			ltc->ltc_nr++;
    121 	}
    122 	ltc->lts_nr = slice;
    123 
    124 	return gf100_ltc_oneinit_tag_ram(ltc);
    125 }
    126 
    127 static void
    128 gm107_ltc_init(struct nvkm_ltc *ltc)
    129 {
    130 	struct nvkm_device *device = ltc->subdev.device;
    131 	u32 lpg128 = !(nvkm_rd32(device, 0x100c80) & 0x00000001);
    132 
    133 	nvkm_wr32(device, 0x17e27c, ltc->ltc_nr);
    134 	nvkm_wr32(device, 0x17e278, ltc->tag_base);
    135 	nvkm_mask(device, 0x17e264, 0x00000002, lpg128 ? 0x00000002 : 0x00000000);
    136 }
    137 
    138 static const struct nvkm_ltc_func
    139 gm107_ltc = {
    140 	.oneinit = gm107_ltc_oneinit,
    141 	.init = gm107_ltc_init,
    142 	.intr = gm107_ltc_intr,
    143 	.cbc_clear = gm107_ltc_cbc_clear,
    144 	.cbc_wait = gm107_ltc_cbc_wait,
    145 	.zbc = 16,
    146 	.zbc_clear_color = gm107_ltc_zbc_clear_color,
    147 	.zbc_clear_depth = gm107_ltc_zbc_clear_depth,
    148 	.invalidate = gf100_ltc_invalidate,
    149 	.flush = gf100_ltc_flush,
    150 };
    151 
    152 int
    153 gm107_ltc_new(struct nvkm_device *device, int index, struct nvkm_ltc **pltc)
    154 {
    155 	return nvkm_ltc_new_(&gm107_ltc, device, index, pltc);
    156 }
    157