cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/fb/rammcp77.c

/*
 * Copyright 2013 Red Hat Inc.
 *
 * 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 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 HOLDER(S) OR AUTHOR(S) 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.
 *
 * Authors: Ben Skeggs
 */

#define mcp77_ram(p) container_of((p), struct mcp77_ram, base)
#include "ram.h"


struct mcp77_ram {
	
struct nvkm_ram base;
	
u64 poller_base;
};


static int mcp77_ram_init(struct nvkm_ram *base) { struct mcp77_ram *ram = mcp77_ram(base); struct nvkm_device *device = ram->base.fb->subdev.device; u32 dniso = ((ram->base.size - (ram->poller_base + 0x00)) >> 5) - 1; u32 hostnb = ((ram->base.size - (ram->poller_base + 0x20)) >> 5) - 1; u32 flush = ((ram->base.size - (ram->poller_base + 0x40)) >> 5) - 1; /* Enable NISO poller for various clients and set their associated * read address, only for MCP77/78 and MCP79/7A. (fd#27501) */ nvkm_wr32(device, 0x100c18, dniso); nvkm_mask(device, 0x100c14, 0x00000000, 0x00000001); nvkm_wr32(device, 0x100c1c, hostnb); nvkm_mask(device, 0x100c14, 0x00000000, 0x00000002); nvkm_wr32(device, 0x100c24, flush); nvkm_mask(device, 0x100c14, 0x00000000, 0x00010000); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Pierre Moreau11264.00%114.29%
Ben Skeggs6235.43%571.43%
Ilia Mirkin10.57%114.29%
Total175100.00%7100.00%

static const struct nvkm_ram_func mcp77_ram_func = { .init = mcp77_ram_init, .get = nv50_ram_get, .put = nv50_ram_put, };
int mcp77_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram) { struct nvkm_device *device = fb->subdev.device; u32 rsvd_head = ( 256 * 1024); /* vga memory */ u32 rsvd_tail = (1024 * 1024) + 0x1000; /* vbios etc + poller mem */ u64 base = (u64)nvkm_rd32(device, 0x100e10) << 12; u64 size = (u64)nvkm_rd32(device, 0x100e14) << 12; struct mcp77_ram *ram; int ret; if (!(ram = kzalloc(sizeof(*ram), GFP_KERNEL))) return -ENOMEM; *pram = &ram->base; ret = nvkm_ram_ctor(&mcp77_ram_func, fb, NVKM_RAM_TYPE_STOLEN, size, 0, &ram->base); if (ret) return ret; ram->poller_base = size - rsvd_tail; ram->base.stolen = base; nvkm_mm_fini(&ram->base.vram); return nvkm_mm_init(&ram->base.vram, rsvd_head >> NVKM_RAM_MM_SHIFT, (size - rsvd_head - rsvd_tail) >> NVKM_RAM_MM_SHIFT, 1); }

Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs198100.00%1100.00%
Total198100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs30372.32%675.00%
Pierre Moreau11527.45%112.50%
Ilia Mirkin10.24%112.50%
Total419100.00%8100.00%
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