cregit-Linux how code gets into the kernel

Release 4.11 drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c

/*
 * Copyright 2015 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 <bskeggs@redhat.com>
 */
#include "priv.h"
#include "agp.h"

#include <core/option.h>
#include <core/pci.h>
#include <subdev/mc.h>


u32 nvkm_pci_rd32(struct nvkm_pci *pci, u16 addr) { return pci->func->rd32(pci, addr); }

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Ben Skeggs25100.00%1100.00%
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void nvkm_pci_wr08(struct nvkm_pci *pci, u16 addr, u8 data) { pci->func->wr08(pci, addr, data); }

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void nvkm_pci_wr32(struct nvkm_pci *pci, u16 addr, u32 data) { pci->func->wr32(pci, addr, data); }

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u32 nvkm_pci_mask(struct nvkm_pci *pci, u16 addr, u32 mask, u32 value) { u32 data = pci->func->rd32(pci, addr); pci->func->wr32(pci, addr, (data & ~mask) | value); return data; }

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Pierre Moreau56100.00%1100.00%
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void nvkm_pci_rom_shadow(struct nvkm_pci *pci, bool shadow) { u32 data = nvkm_pci_rd32(pci, 0x0050); if (shadow) data |= 0x00000001; else data &= ~0x00000001; nvkm_pci_wr32(pci, 0x0050, data); }

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Ben Skeggs46100.00%1100.00%
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static irqreturn_t nvkm_pci_intr(int irq, void *arg) { struct nvkm_pci *pci = arg; struct nvkm_device *device = pci->subdev.device; bool handled = false; nvkm_mc_intr_unarm(device); if (pci->msi) pci->func->msi_rearm(pci); nvkm_mc_intr(device, &handled); nvkm_mc_intr_rearm(device); return handled ? IRQ_HANDLED : IRQ_NONE; }

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Ben Skeggs76100.00%3100.00%
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static int nvkm_pci_fini(struct nvkm_subdev *subdev, bool suspend) { struct nvkm_pci *pci = nvkm_pci(subdev); if (pci->irq >= 0) { free_irq(pci->irq, pci); pci->irq = -1; }; if (pci->agp.bridge) nvkm_agp_fini(pci); return 0; }

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static int nvkm_pci_preinit(struct nvkm_subdev *subdev) { struct nvkm_pci *pci = nvkm_pci(subdev); if (pci->agp.bridge) nvkm_agp_preinit(pci); return 0; }

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static int nvkm_pci_oneinit(struct nvkm_subdev *subdev) { struct nvkm_pci *pci = nvkm_pci(subdev); if (pci_is_pcie(pci->pdev)) return nvkm_pcie_oneinit(pci); return 0; }

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Karol Herbst3794.87%150.00%
Ben Skeggs25.13%150.00%
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static int nvkm_pci_init(struct nvkm_subdev *subdev) { struct nvkm_pci *pci = nvkm_pci(subdev); struct pci_dev *pdev = pci->pdev; int ret; if (pci->agp.bridge) { ret = nvkm_agp_init(pci); if (ret) return ret; } else if (pci_is_pcie(pci->pdev)) { nvkm_pcie_init(pci); } if (pci->func->init) pci->func->init(pci); ret = request_irq(pdev->irq, nvkm_pci_intr, IRQF_SHARED, "nvkm", pci); if (ret) return ret; pci->irq = pdev->irq; return ret; }

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Ben Skeggs10784.92%480.00%
Karol Herbst1915.08%120.00%
Total126100.00%5100.00%


static void * nvkm_pci_dtor(struct nvkm_subdev *subdev) { struct nvkm_pci *pci = nvkm_pci(subdev); nvkm_agp_dtor(pci); if (pci->msi) pci_disable_msi(pci->pdev); return nvkm_pci(subdev); }

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Ben Skeggs46100.00%3100.00%
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static const struct nvkm_subdev_func nvkm_pci_func = { .dtor = nvkm_pci_dtor, .oneinit = nvkm_pci_oneinit, .preinit = nvkm_pci_preinit, .init = nvkm_pci_init, .fini = nvkm_pci_fini, };
int nvkm_pci_new_(const struct nvkm_pci_func *func, struct nvkm_device *device, int index, struct nvkm_pci **ppci) { struct nvkm_pci *pci; if (!(pci = *ppci = kzalloc(sizeof(**ppci), GFP_KERNEL))) return -ENOMEM; nvkm_subdev_ctor(&nvkm_pci_func, device, index, &pci->subdev); pci->func = func; pci->pdev = device->func->pci(device)->pdev; pci->irq = -1; pci->pcie.speed = -1; pci->pcie.width = -1; if (device->type == NVKM_DEVICE_AGP) nvkm_agp_ctor(pci); switch (pci->pdev->device & 0x0ff0) { case 0x00f0: case 0x02e0: /* BR02? NFI how these would be handled yet exactly */ break; default: switch (device->chipset) { case 0xaa: /* reported broken, nv also disable it */ break; default: pci->msi = true; break; } } pci->msi = nvkm_boolopt(device->cfgopt, "NvMSI", pci->msi); if (pci->msi && func->msi_rearm) { pci->msi = pci_enable_msi(pci->pdev) == 0; if (pci->msi) nvkm_debug(&pci->subdev, "MSI enabled\n"); } else { pci->msi = false; } return 0; }

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Ben Skeggs22492.56%375.00%
Karol Herbst187.44%125.00%
Total242100.00%4100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Ben Skeggs73284.43%571.43%
Karol Herbst799.11%114.29%
Pierre Moreau566.46%114.29%
Total867100.00%7100.00%
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