search for: nvkm_pcie_speed

not much changed since the last time I sent those patches out, but there are a couple of annoying bug fixes, which users would probably never hit unless they do rmmod/modprobe nouveau cycles. Biggest change is that I force the link to a 8.0 speed rather than the speed the GPU came up with. Also this series depends on the PCIe improvement patches I sent out recently. Karol Herbst (4): pci:

...-23,7 +23,7 @@ */ #include "priv.h" -static int +int gk104_pcie_version_supported(struct nvkm_pci *pci) { return (nvkm_rd32(pci->subdev.device, 0x8c1c0) & 0x4) == 0x4 ? 2 : 1; @@ -108,7 +108,7 @@ gk104_pcie_lnkctl_speed(struct nvkm_pci *pci) return -1; } -static enum nvkm_pcie_speed +enum nvkm_pcie_speed gk104_pcie_max_speed(struct nvkm_pci *pci) { u32 max_speed = nvkm_rd32(pci->subdev.device, 0x8c1c0) & 0x300000; @@ -146,7 +146,7 @@ gk104_pcie_set_link_speed(struct nvkm_pci *pci, enum nvkm_pcie_speed speed) nvkm_mask(device, 0x8c040, 0x1, 0x1); } -static int +...

I merged the both series I sent out recently into one bigger one so that it's more obvious on why all of that is needed. Biggest changes since last sent: * reworked the ASPM patch * removed "pci: add nvkm_pcie_get_speed" patch Please test this on Laptops and report back if it either breaks something or doesn't fix runpm. Thanks Karol Herbst (6): pci: disable ASPM before

While investigating the runpm issues on my GP107 I noticed that something inside devinit makes runpm break. If Nouveau loads up to the point right before doing devinit, runpm works without any issues, if devinit is ran, not anymore. Out of curiousity I even tried to "bisect" devinit by not running it on vbios provided signed PMU image, but on the devinit parser we have inside Nouveau.

everything was taken from nvgpu. Main reason for adding is to improve stability of the PCIe link changing code as we might want to depend on it for a workaround fixing our infamous runpm issues on recent laptops Karol Herbst (3): pci: force disable ASPM before changing the link speed pci/gk104: enable dl_mgr safe mode pci/gk104: wait for ltssm idle before changing the link

overall the same as the old stuff, but with better namings and tirivialy improved code here and there Karol Herbst (9): pci: add gk104 variant pci: add gf106 variant pci: implement generic code for PCIe speed change pci: implement pcie speed change for tesla pci: implement pcie speed change on Fermi pci: implement PCIe speed change for kepler+ bios/perf: parse the pci speed from the

...ci.h > +++ b/drm/nouveau/include/nvkm/subdev/pci.h > @@ -52,6 +52,7 @@ int gk104_pci_new(struct nvkm_device *, int, struct nvkm_pci **); > int gp100_pci_new(struct nvkm_device *, int, struct nvkm_pci **); > > /* pcie functions */ > -int nvkm_pcie_set_link(struct nvkm_pci *, enum nvkm_pcie_speed, u8 width); > +int nvkm_pcie_set_link(struct nvkm_pci *, enum nvkm_pcie_speed, u8 width, > + bool save); > enum nvkm_pcie_speed nvkm_pcie_get_speed(struct nvkm_pci *); > #endif > diff --git a/drm/nouveau/nouveau_drm.c b/drm/nouveau/nouveau_drm.c > index 3d32...

...-23,7 +23,7 @@ */ #include "priv.h" -static int +int gk104_pcie_version_supported(struct nvkm_pci *pci) { return (nvkm_rd32(pci->subdev.device, 0x8c1c0) & 0x4) == 0x4 ? 2 : 1; @@ -108,7 +108,7 @@ gk104_pcie_lnkctl_speed(struct nvkm_pci *pci) return -1; } -static enum nvkm_pcie_speed +enum nvkm_pcie_speed gk104_pcie_max_speed(struct nvkm_pci *pci) { u32 max_speed = nvkm_rd32(pci->subdev.device, 0x8c1c0) & 0x300000; @@ -146,7 +146,7 @@ gk104_pcie_set_link_speed(struct nvkm_pci *pci, enum nvkm_pcie_speed speed) nvkm_mask(device, 0x8c040, 0x1, 0x1); } -static int +...

...-23,7 +23,7 @@ */ #include "priv.h" -static int +int gk104_pcie_version_supported(struct nvkm_pci *pci) { return (nvkm_rd32(pci->subdev.device, 0x8c1c0) & 0x4) == 0x4 ? 2 : 1; @@ -108,7 +108,7 @@ gk104_pcie_lnkctl_speed(struct nvkm_pci *pci) return -1; } -static enum nvkm_pcie_speed +enum nvkm_pcie_speed gk104_pcie_max_speed(struct nvkm_pci *pci) { u32 max_speed = nvkm_rd32(pci->subdev.device, 0x8c1c0) & 0x300000; @@ -146,7 +146,7 @@ gk104_pcie_set_link_speed(struct nvkm_pci *pci, enum nvkm_pcie_speed speed) nvkm_mask(device, 0x8c040, 0x1, 0x1); } -static int +...

...-25,7 +25,7 @@ #include <subdev/timer.h> -static int +int gk104_pcie_version_supported(struct nvkm_pci *pci) { return (nvkm_rd32(pci->subdev.device, 0x8c1c0) & 0x4) == 0x4 ? 2 : 1; @@ -110,7 +110,7 @@ gk104_pcie_lnkctl_speed(struct nvkm_pci *pci) return -1; } -static enum nvkm_pcie_speed +enum nvkm_pcie_speed gk104_pcie_max_speed(struct nvkm_pci *pci) { u32 max_speed = nvkm_rd32(pci->subdev.device, 0x8c1c0) & 0x300000; @@ -156,7 +156,7 @@ gk104_pcie_set_link_speed(struct nvkm_pci *pci, enum nvkm_pcie_speed speed) return 0; } -static int +int gk104_pcie_init(struct...

CCing linux-pci and Bjorn Helgaas. Maybe we could get better insights on how a reasonable fix would look like. Anyway, to me this entire issue looks like something which has to be fixed on a PCI level instead of inside a driver, so it makes sense to ask the pci folks if they have any better suggestions. Original cover letter: While investigating the runpm issues on my GP107 I noticed that

this code is pretty usefull for now as nothing triggers it, but the link speed can be changed with a "gk104_pcie_set_link(pci, NVKM_PCIE_SPEED_8_0, 16);" as the last call inside gk104_pcie_init. In the future this should be helpful when using reverse prime with high resolutions on Pascal GPUs. I still need to verify this with a mmiotrace and do more testing, but everybody suffering from bad reverse prime performance or just wanting...

...i.h > > > @@ -52,6 +52,7 @@ int gk104_pci_new(struct nvkm_device *, int, struct nvkm_pci **); > > > int gp100_pci_new(struct nvkm_device *, int, struct nvkm_pci **); > > > > > > /* pcie functions */ > > > -int nvkm_pcie_set_link(struct nvkm_pci *, enum nvkm_pcie_speed, u8 width); > > > +int nvkm_pcie_set_link(struct nvkm_pci *, enum nvkm_pcie_speed, u8 width, > > > + bool save); > > > enum nvkm_pcie_speed nvkm_pcie_get_speed(struct nvkm_pci *); > > > #endif > > > diff --git a/drm/nouveau/nouveau...

this patch series implements PCIe speed changes for Tesla and newer. The Kepler and Fermi bits are tested on my cards at home. Karol Herbst (9): pci: add gk104 variant pci: add gf106 variant pci: implement generic code for PCIe speed change pci: implement pcie speed change for tesla pci: implement pcie speed change on Fermi pci: implement PCIe speed change for kepler+ bios/perf:

...> +nvkm_pcie_force_aspm_off(struct nvkm_pci *pci, bool status) > +{ > + if (!pci->func->pcie.force_aspm_off) > + return; > + pci->func->pcie.force_aspm_off(pci, status); > +} > + > int > nvkm_pcie_set_link(struct nvkm_pci *pci, enum nvkm_pcie_speed speed, u8 width) > { > @@ -157,9 +165,15 @@ nvkm_pcie_set_link(struct nvkm_pci *pci, enum nvkm_pcie_speed speed, u8 width) > nvkm_debug(subdev, "set link to %s x%i\n", > nvkm_pcie_speeds[speed], width); > > + /* force disable ASPM */ &gt...

First three patches are removing ACPI workarounds which should have never landed. The last four are adding a workaround to nouveau which seem to help quite a lot with the RTD3 issues with Nouveau, so let's discuss and get wider testing of those and see if there is any fallout or laptops where the issues don't get fixed. Karol Herbst (7): Revert "ACPI / OSI: Add OEM _OSI string to

overall it is for the most part the same as my older version. I cleaned up some copyright things, so that it is more like the others. Also I moved the print about the max speed supported into preinit and did some other minor cleanups in the 3rd commit. Happy testing (and performance for prime offloading setups) Karol Herbst (9): pci: add gk104 variant pci: add gf106 variant pci: implement

...ouveau/include/nvkm/subdev/pci.h +++ b/drm/nouveau/include/nvkm/subdev/pci.h @@ -52,6 +52,7 @@ int gk104_pci_new(struct nvkm_device *, int, struct nvkm_pci **); int gp100_pci_new(struct nvkm_device *, int, struct nvkm_pci **); /* pcie functions */ -int nvkm_pcie_set_link(struct nvkm_pci *, enum nvkm_pcie_speed, u8 width); +int nvkm_pcie_set_link(struct nvkm_pci *, enum nvkm_pcie_speed, u8 width, + bool save); enum nvkm_pcie_speed nvkm_pcie_get_speed(struct nvkm_pci *); #endif diff --git a/drm/nouveau/nouveau_drm.c b/drm/nouveau/nouveau_drm.c index 3d32afe8a..78d55c525 100644 --- a/drm/nouveau/n...

...nouveau/include/nvkm/subdev/pci.h b/drm/nouveau/include/nvkm/subdev/pci.h > index 1fdf3098..b23793a2 100644 > --- a/drm/nouveau/include/nvkm/subdev/pci.h > +++ b/drm/nouveau/include/nvkm/subdev/pci.h > @@ -26,8 +26,9 @@ struct nvkm_pci { > } agp; > > struct { > - enum nvkm_pcie_speed speed; > - u8 width; > + enum nvkm_pcie_speed cur_speed; > + enum nvkm_pcie_speed def_speed; > + u8 cur_width; > } pcie; > > bool msi; > diff --git a/drm/nouveau/nvkm/subdev/pci/base.c b/drm/nouveau/nvkm/subdev/pci/base.c > index ee2431a7..d9fb5a83 100644 > -...

...111,14 @@ nvkm_pcie_init(struct nvkm_pci *pci) return 0; } +void +nvkm_pcie_force_aspm_off(struct nvkm_pci *pci, bool status) +{ + if (!pci->func->pcie.force_aspm_off) + return; + pci->func->pcie.force_aspm_off(pci, status); +} + int nvkm_pcie_set_link(struct nvkm_pci *pci, enum nvkm_pcie_speed speed, u8 width) { @@ -157,9 +165,15 @@ nvkm_pcie_set_link(struct nvkm_pci *pci, enum nvkm_pcie_speed speed, u8 width) nvkm_debug(subdev, "set link to %s x%i\n", nvkm_pcie_speeds[speed], width); + /* force disable ASPM */ + nvkm_pcie_force_aspm_off(pci, true); + ret = pci-&gt...