cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/fb/nv30.c

/*
 * Copyright (C) 2010 Francisco Jerez.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */
#include "priv.h"
#include "ram.h"


void nv30_fb_tile_init(struct nvkm_fb *fb, int i, u32 addr, u32 size, u32 pitch, u32 flags, struct nvkm_fb_tile *tile) { /* for performance, select alternate bank offset for zeta */ if (!(flags & 4)) { tile->addr = (0 << 4); } else { if (fb->func->tile.comp) /* z compression */ fb->func->tile.comp(fb, i, size, flags, tile); tile->addr = (1 << 4); } tile->addr |= 0x00000001; /* enable */ tile->addr |= addr; tile->limit = max(1u, addr + size) - 1; tile->pitch = pitch; }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs8263.57%685.71%
Francisco Jerez4736.43%114.29%
Total129100.00%7100.00%


static void nv30_fb_tile_comp(struct nvkm_fb *fb, int i, u32 size, u32 flags, struct nvkm_fb_tile *tile) { u32 tiles = DIV_ROUND_UP(size, 0x40); u32 tags = round_up(tiles / fb->ram->parts, 0x40); if (!nvkm_mm_head(&fb->ram->tags, 0, 1, tags, tags, 1, &tile->tag)) { if (flags & 2) tile->zcomp |= 0x01000000; /* Z16 */ else tile->zcomp |= 0x02000000; /* Z24S8 */ tile->zcomp |= ((tile->tag->offset ) >> 6); tile->zcomp |= ((tile->tag->offset + tags - 1) >> 6) << 12; #ifdef __BIG_ENDIAN tile->zcomp |= 0x10000000; #endif } }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs151100.00%7100.00%
Total151100.00%7100.00%


static int calc_bias(struct nvkm_fb *fb, int k, int i, int j) { struct nvkm_device *device = fb->subdev.device; int b = (device->chipset > 0x30 ? nvkm_rd32(device, 0x122c + 0x10 * k + 0x4 * j) >> (4 * (i ^ 1)) : 0) & 0xf; return 2 * (b & 0x8 ? b - 0x10 : b); }

Contributors

PersonTokensPropCommitsCommitProp
Francisco Jerez7486.05%228.57%
Ben Skeggs1213.95%571.43%
Total86100.00%7100.00%


static int calc_ref(struct nvkm_fb *fb, int l, int k, int i) { int j, x = 0; for (j = 0; j < 4; j++) { int m = (l >> (8 * i) & 0xff) + calc_bias(fb, k, i, j); x |= (0x80 | clamp(m, 0, 0x1f)) << (8 * j); } return x; }

Contributors

PersonTokensPropCommitsCommitProp
Francisco Jerez8996.74%266.67%
Ben Skeggs33.26%133.33%
Total92100.00%3100.00%


void nv30_fb_init(struct nvkm_fb *fb) { struct nvkm_device *device = fb->subdev.device; int i, j; /* Init the memory timing regs at 0x10037c/0x1003ac */ if (device->chipset == 0x30 || device->chipset == 0x31 || device->chipset == 0x35) { /* Related to ROP count */ int n = (device->chipset == 0x31 ? 2 : 4); int l = nvkm_rd32(device, 0x1003d0); for (i = 0; i < n; i++) { for (j = 0; j < 3; j++) nvkm_wr32(device, 0x10037c + 0xc * i + 0x4 * j, calc_ref(fb, l, 0, j)); for (j = 0; j < 2; j++) nvkm_wr32(device, 0x1003ac + 0x8 * i + 0x4 * j, calc_ref(fb, l, 1, j)); } } }

Contributors

PersonTokensPropCommitsCommitProp
Francisco Jerez14686.90%228.57%
Ben Skeggs2213.10%571.43%
Total168100.00%7100.00%

static const struct nvkm_fb_func nv30_fb = { .init = nv30_fb_init, .tile.regions = 8, .tile.init = nv30_fb_tile_init, .tile.comp = nv30_fb_tile_comp, .tile.fini = nv20_fb_tile_fini, .tile.prog = nv20_fb_tile_prog, .ram_new = nv20_ram_new, .memtype_valid = nv04_fb_memtype_valid, };
int nv30_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb) { return nvkm_fb_new_(&nv30_fb, device, index, pfb); }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs32100.00%1100.00%
Total32100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs36450.35%1482.35%
Francisco Jerez35949.65%317.65%
Total723100.00%17100.00%
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