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author | Ben Skeggs <bskeggs@redhat.com> | 2015-08-20 14:54:23 +1000 |
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committer | Ben Skeggs <bskeggs@redhat.com> | 2015-08-28 12:40:49 +1000 |
commit | 340b0e7c500a0ac8fb649c58cf8528550642c1d8 (patch) | |
tree | 5d0e79108aee9874fd4eabdb138cf7415ad770c0 /drivers/gpu/drm/nouveau/nvkm/subdev/pci | |
parent | 26c9e8effebb9166eb1cfba2d164676e98c505c7 (diff) | |
download | blackbird-op-linux-340b0e7c500a0ac8fb649c58cf8528550642c1d8.tar.gz blackbird-op-linux-340b0e7c500a0ac8fb649c58cf8528550642c1d8.zip |
drm/nouveau/pci: merge agp handling from nouveau drm
This commit reinstates the pre-DEVINIT AGP fiddling that was broken in
an earlier commit.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/pci')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/pci/Kbuild | 1 | ||||
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/pci/agp.c | 171 | ||||
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/pci/agp.h | 18 | ||||
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c | 26 |
4 files changed, 216 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/Kbuild b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/Kbuild index a8e9b0fc447e..99672c3d0bad 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/Kbuild +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/Kbuild @@ -1,3 +1,4 @@ +nvkm-y += nvkm/subdev/pci/agp.o nvkm-y += nvkm/subdev/pci/base.o nvkm-y += nvkm/subdev/pci/nv04.o nvkm-y += nvkm/subdev/pci/nv40.o diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/agp.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/agp.c new file mode 100644 index 000000000000..814cb51cc873 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/agp.c @@ -0,0 +1,171 @@ +/* + * Copyright 2015 Nouveau Project + * + * 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. + */ +#include "agp.h" +#ifdef __NVKM_PCI_AGP_H__ +#include <core/option.h> + +struct nvkm_device_agp_quirk { + u16 hostbridge_vendor; + u16 hostbridge_device; + u16 chip_vendor; + u16 chip_device; + int mode; +}; + +static const struct nvkm_device_agp_quirk +nvkm_device_agp_quirks[] = { + /* VIA Apollo PRO133x / GeForce FX 5600 Ultra - fdo#20341 */ + { PCI_VENDOR_ID_VIA, 0x0691, PCI_VENDOR_ID_NVIDIA, 0x0311, 2 }, + {}, +}; + +void +nvkm_agp_fini(struct nvkm_pci *pci) +{ + if (pci->agp.acquired) { + agp_backend_release(pci->agp.bridge); + pci->agp.acquired = false; + } +} + +/* Ensure AGP controller is in a consistent state in case we need to + * execute the VBIOS DEVINIT scripts. + */ +void +nvkm_agp_preinit(struct nvkm_pci *pci) +{ + struct nvkm_device *device = pci->subdev.device; + u32 mode = nvkm_pci_rd32(pci, 0x004c); + u32 save[2]; + + /* First of all, disable fast writes, otherwise if it's already + * enabled in the AGP bridge and we disable the card's AGP + * controller we might be locking ourselves out of it. + */ + if ((mode | pci->agp.mode) & PCI_AGP_COMMAND_FW) { + mode = pci->agp.mode & ~PCI_AGP_COMMAND_FW; + agp_enable(pci->agp.bridge, mode); + } + + /* clear busmaster bit, and disable AGP */ + save[0] = nvkm_pci_rd32(pci, 0x0004); + nvkm_pci_wr32(pci, 0x0004, save[0] & ~0x00000004); + nvkm_pci_wr32(pci, 0x004c, 0x00000000); + + /* reset PGRAPH, PFIFO and PTIMER */ + save[1] = nvkm_mask(device, 0x000200, 0x00011100, 0x00000000); + nvkm_mask(device, 0x000200, 0x00011100, save[1]); + + /* and restore busmaster bit (gives effect of resetting AGP) */ + nvkm_pci_wr32(pci, 0x0004, save[0]); +} + +int +nvkm_agp_init(struct nvkm_pci *pci) +{ + if (!agp_backend_acquire(pci->pdev)) { + nvkm_error(&pci->subdev, "failed to acquire agp\n"); + return -ENODEV; + } + + agp_enable(pci->agp.bridge, pci->agp.mode); + pci->agp.acquired = true; + return 0; +} + +void +nvkm_agp_dtor(struct nvkm_pci *pci) +{ + arch_phys_wc_del(pci->agp.mtrr); +} + +void +nvkm_agp_ctor(struct nvkm_pci *pci) +{ + const struct nvkm_device_agp_quirk *quirk = nvkm_device_agp_quirks; + struct nvkm_subdev *subdev = &pci->subdev; + struct nvkm_device *device = subdev->device; + struct agp_kern_info info; + int mode = -1; + +#ifdef __powerpc__ + /* Disable AGP by default on all PowerPC machines for now -- At + * least some UniNorth-2 AGP bridges are known to be broken: + * DMA from the host to the card works just fine, but writeback + * from the card to the host goes straight to memory + * untranslated bypassing that GATT somehow, making them quite + * painful to deal with... + */ + mode = 0; +#endif + mode = nvkm_longopt(device->cfgopt, "NvAGP", mode); + + /* acquire bridge temporarily, so that we can copy its info */ + if (!(pci->agp.bridge = agp_backend_acquire(pci->pdev))) { + nvkm_warn(subdev, "failed to acquire agp\n"); + return; + } + agp_copy_info(pci->agp.bridge, &info); + agp_backend_release(pci->agp.bridge); + + pci->agp.mode = info.mode; + pci->agp.base = info.aper_base; + pci->agp.size = info.aper_size * 1024 * 1024; + pci->agp.cma = info.cant_use_aperture; + pci->agp.mtrr = -1; + + /* determine if bridge + chipset combination needs a workaround */ + while (quirk->hostbridge_vendor) { + if (info.device->vendor == quirk->hostbridge_vendor && + info.device->device == quirk->hostbridge_device && + pci->pdev->vendor == quirk->chip_vendor && + pci->pdev->device == quirk->chip_device) { + nvkm_info(subdev, "forcing default agp mode to %dX, " + "use NvAGP=<mode> to override\n", + quirk->mode); + mode = quirk->mode; + break; + } + quirk++; + } + + /* apply quirk / user-specified mode */ + if (mode >= 1) { + if (pci->agp.mode & 0x00000008) + mode /= 4; /* AGPv3 */ + pci->agp.mode &= ~0x00000007; + pci->agp.mode |= (mode & 0x7); + } else + if (mode == 0) { + pci->agp.bridge = NULL; + return; + } + + /* fast writes appear to be broken on nv18, they make the card + * lock up randomly. + */ + if (device->chipset == 0x18) + pci->agp.mode &= ~PCI_AGP_COMMAND_FW; + + pci->agp.mtrr = arch_phys_wc_add(pci->agp.base, pci->agp.size); +} +#endif diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/agp.h b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/agp.h new file mode 100644 index 000000000000..df2dd08363ad --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/agp.h @@ -0,0 +1,18 @@ +#include "priv.h" +#if defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)) +#ifndef __NVKM_PCI_AGP_H__ +#define __NVKM_PCI_AGP_H__ + +void nvkm_agp_ctor(struct nvkm_pci *); +void nvkm_agp_dtor(struct nvkm_pci *); +void nvkm_agp_preinit(struct nvkm_pci *); +int nvkm_agp_init(struct nvkm_pci *); +void nvkm_agp_fini(struct nvkm_pci *); +#endif +#else +static inline void nvkm_agp_ctor(struct nvkm_pci *pci) {} +static inline void nvkm_agp_dtor(struct nvkm_pci *pci) {} +static inline void nvkm_agp_preinit(struct nvkm_pci *pci) {} +static inline int nvkm_agp_init(struct nvkm_pci *pci) { return -ENOSYS; } +static inline void nvkm_agp_fini(struct nvkm_pci *pci) {} +#endif diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c index e5e0d02f3d88..d1c148e51922 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pci/base.c @@ -22,6 +22,7 @@ * Authors: Ben Skeggs <bskeggs@redhat.com> */ #include "priv.h" +#include "agp.h" #include <core/option.h> #include <core/pci.h> @@ -76,10 +77,24 @@ 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; } @@ -90,6 +105,12 @@ nvkm_pci_init(struct nvkm_subdev *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; @@ -102,6 +123,7 @@ 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); @@ -110,6 +132,7 @@ nvkm_pci_dtor(struct nvkm_subdev *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, }; @@ -127,6 +150,9 @@ nvkm_pci_new_(const struct nvkm_pci_func *func, struct nvkm_device *device, 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: |