diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c new file mode 100644 index 000000000000..d1c148e51922 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c @@ -0,0 +1,182 @@ +/* + * 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); +} + +void +nvkm_pci_wr08(struct nvkm_pci *pci, u16 addr, u8 data) +{ + pci->func->wr08(pci, addr, data); +} + +void +nvkm_pci_wr32(struct nvkm_pci *pci, u16 addr, u32 data) +{ + pci->func->wr32(pci, addr, data); +} + +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); +} + +static irqreturn_t +nvkm_pci_intr(int irq, void *arg) +{ + struct nvkm_pci *pci = arg; + struct nvkm_mc *mc = pci->subdev.device->mc; + bool handled = false; + if (likely(mc)) { + nvkm_mc_intr_unarm(mc); + if (pci->msi) + pci->func->msi_rearm(pci); + nvkm_mc_intr(mc, &handled); + nvkm_mc_intr_rearm(mc); + } + return handled ? IRQ_HANDLED : IRQ_NONE; +} + +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; +} + +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; +} + +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; + } + + ret = request_irq(pdev->irq, nvkm_pci_intr, IRQF_SHARED, "nvkm", pci); + if (ret) + return ret; + + pci->irq = pdev->irq; + return ret; +} + +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); +} + +static const struct nvkm_subdev_func +nvkm_pci_func = { + .dtor = nvkm_pci_dtor, + .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, 0, &pci->subdev); + pci->func = func; + pci->pdev = device->func->pci(device)->pdev; + pci->irq = -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; +} |