cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/bar/gf100.c

/*
 * Copyright 2012 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
 */
#include "gf100.h"

#include <core/gpuobj.h>
#include <subdev/fb.h>
#include <subdev/mmu.h>


static struct nvkm_vm * gf100_bar_kmap(struct nvkm_bar *base) { return gf100_bar(base)->bar[0].vm; }

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Ben Skeggs26100.00%7100.00%
Total26100.00%7100.00%


int gf100_bar_umap(struct nvkm_bar *base, u64 size, int type, struct nvkm_vma *vma) { struct gf100_bar *bar = gf100_bar(base); return nvkm_vm_get(bar->bar[1].vm, size, type, NV_MEM_ACCESS_RW, vma); }

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Ben Skeggs52100.00%7100.00%
Total52100.00%7100.00%


static int gf100_bar_ctor_vm(struct gf100_bar *bar, struct gf100_bar_vm *bar_vm, struct lock_class_key *key, int bar_nr) { struct nvkm_device *device = bar->base.subdev.device; struct nvkm_vm *vm; resource_size_t bar_len; int ret; ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 0x1000, 0, false, &bar_vm->mem); if (ret) return ret; ret = nvkm_gpuobj_new(device, 0x8000, 0, false, NULL, &bar_vm->pgd); if (ret) return ret; bar_len = device->func->resource_size(device, bar_nr); ret = nvkm_vm_new(device, 0, bar_len, 0, key, &vm); if (ret) return ret; atomic_inc(&vm->engref[NVKM_SUBDEV_BAR]); /* * Bootstrap page table lookup. */ if (bar_nr == 3) { ret = nvkm_vm_boot(vm, bar_len); if (ret) { nvkm_vm_ref(NULL, &vm, NULL); return ret; } } ret = nvkm_vm_ref(vm, &bar_vm->vm, bar_vm->pgd); nvkm_vm_ref(NULL, &vm, NULL); if (ret) return ret; nvkm_kmap(bar_vm->mem); nvkm_wo32(bar_vm->mem, 0x0200, lower_32_bits(bar_vm->pgd->addr)); nvkm_wo32(bar_vm->mem, 0x0204, upper_32_bits(bar_vm->pgd->addr)); nvkm_wo32(bar_vm->mem, 0x0208, lower_32_bits(bar_len - 1)); nvkm_wo32(bar_vm->mem, 0x020c, upper_32_bits(bar_len - 1)); nvkm_done(bar_vm->mem); return 0; }

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Ben Skeggs25483.01%1694.12%
Alexandre Courbot5216.99%15.88%
Total306100.00%17100.00%


int gf100_bar_oneinit(struct nvkm_bar *base) { static struct lock_class_key bar1_lock; static struct lock_class_key bar3_lock; struct gf100_bar *bar = gf100_bar(base); int ret; /* BAR3 */ if (bar->base.func->kmap) { ret = gf100_bar_ctor_vm(bar, &bar->bar[0], &bar3_lock, 3); if (ret) return ret; } /* BAR1 */ ret = gf100_bar_ctor_vm(bar, &bar->bar[1], &bar1_lock, 1); if (ret) return ret; return 0; }

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Ben Skeggs8480.77%1191.67%
Alexandre Courbot2019.23%18.33%
Total104100.00%12100.00%


int gf100_bar_init(struct nvkm_bar *base) { struct gf100_bar *bar = gf100_bar(base); struct nvkm_device *device = bar->base.subdev.device; u32 addr; nvkm_mask(device, 0x000200, 0x00000100, 0x00000000); nvkm_mask(device, 0x000200, 0x00000100, 0x00000100); addr = nvkm_memory_addr(bar->bar[1].mem) >> 12; nvkm_wr32(device, 0x001704, 0x80000000 | addr); if (bar->bar[0].mem) { addr = nvkm_memory_addr(bar->bar[0].mem) >> 12; nvkm_wr32(device, 0x001714, 0xc0000000 | addr); } return 0; }

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Ben Skeggs128100.00%4100.00%
Total128100.00%4100.00%


void * gf100_bar_dtor(struct nvkm_bar *base) { struct gf100_bar *bar = gf100_bar(base); nvkm_vm_ref(NULL, &bar->bar[1].vm, bar->bar[1].pgd); nvkm_gpuobj_del(&bar->bar[1].pgd); nvkm_memory_del(&bar->bar[1].mem); if (bar->bar[0].vm) { nvkm_memory_del(&bar->bar[0].vm->pgt[0].mem[0]); nvkm_vm_ref(NULL, &bar->bar[0].vm, bar->bar[0].pgd); } nvkm_gpuobj_del(&bar->bar[0].pgd); nvkm_memory_del(&bar->bar[0].mem); return bar; }

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Ben Skeggs160100.00%9100.00%
Total160100.00%9100.00%


int gf100_bar_new_(const struct nvkm_bar_func *func, struct nvkm_device *device, int index, struct nvkm_bar **pbar) { struct gf100_bar *bar; if (!(bar = kzalloc(sizeof(*bar), GFP_KERNEL))) return -ENOMEM; nvkm_bar_ctor(func, device, index, &bar->base); *pbar = &bar->base; return 0; }

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Ben Skeggs77100.00%8100.00%
Total77100.00%8100.00%

static const struct nvkm_bar_func gf100_bar_func = { .dtor = gf100_bar_dtor, .oneinit = gf100_bar_oneinit, .init = gf100_bar_init, .kmap = gf100_bar_kmap, .umap = gf100_bar_umap, .flush = g84_bar_flush, };
int gf100_bar_new(struct nvkm_device *device, int index, struct nvkm_bar **pbar) { return gf100_bar_new_(&gf100_bar_func, device, index, pbar); }

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


Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs86492.31%2496.00%
Alexandre Courbot727.69%14.00%
Total936100.00%25100.00%
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