From 2c1a425e7d537ea655fa276f267c0b1cd100ff34 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Wed, 22 Aug 2012 23:55:42 -0400 Subject: [PATCH] drm/nve0/ibus: handle PIBUS interrupts to prevent storm Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/Makefile | 1 + .../drm/nouveau/core/include/core/device.h | 1 + .../drm/nouveau/core/include/subdev/ibus.h | 33 +++++ .../gpu/drm/nouveau/core/subdev/device/nve0.c | 3 + .../gpu/drm/nouveau/core/subdev/ibus/nve0.c | 123 ++++++++++++++++++ drivers/gpu/drm/nouveau/core/subdev/mc/nvc0.c | 1 + 6 files changed, 162 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/core/include/subdev/ibus.h create mode 100644 drivers/gpu/drm/nouveau/core/subdev/ibus/nve0.c diff --git a/drivers/gpu/drm/nouveau/Makefile b/drivers/gpu/drm/nouveau/Makefile index cb237af3b21d..1c506c5a9a48 100644 --- a/drivers/gpu/drm/nouveau/Makefile +++ b/drivers/gpu/drm/nouveau/Makefile @@ -73,6 +73,7 @@ nouveau-y += core/subdev/gpio/nvd0.o nouveau-y += core/subdev/i2c/base.o nouveau-y += core/subdev/i2c/aux.o nouveau-y += core/subdev/i2c/bit.o +nouveau-y += core/subdev/ibus/nve0.o nouveau-y += core/subdev/instmem/base.o nouveau-y += core/subdev/instmem/nv04.o nouveau-y += core/subdev/instmem/nv40.o diff --git a/drivers/gpu/drm/nouveau/core/include/core/device.h b/drivers/gpu/drm/nouveau/core/include/core/device.h index 130559327bad..c32f96a22704 100644 --- a/drivers/gpu/drm/nouveau/core/include/core/device.h +++ b/drivers/gpu/drm/nouveau/core/include/core/device.h @@ -17,6 +17,7 @@ enum nv_subdev_type { NVDEV_SUBDEV_TIMER, NVDEV_SUBDEV_FB, NVDEV_SUBDEV_LTCG, + NVDEV_SUBDEV_IBUS, NVDEV_SUBDEV_INSTMEM, NVDEV_SUBDEV_VM, NVDEV_SUBDEV_BAR, diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/ibus.h b/drivers/gpu/drm/nouveau/core/include/subdev/ibus.h new file mode 100644 index 000000000000..f014594f4265 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/include/subdev/ibus.h @@ -0,0 +1,33 @@ +#ifndef __NOUVEAU_IBUS_H__ +#define __NOUVEAU_IBUS_H__ + +#include +#include + +struct nouveau_ibus { + struct nouveau_subdev base; +}; + +static inline struct nouveau_ibus * +nouveau_ibus(void *obj) +{ + return (void *)nv_device(obj)->subdev[NVDEV_SUBDEV_IBUS]; +} + +#define nouveau_ibus_create(p,e,o,d) \ + nouveau_subdev_create_((p), (e), (o), 0, "PIBUS", "ibus", \ + sizeof(**d), (void **)d) +#define nouveau_ibus_destroy(p) \ + nouveau_subdev_destroy(&(p)->base) +#define nouveau_ibus_init(p) \ + nouveau_subdev_init(&(p)->base) +#define nouveau_ibus_fini(p,s) \ + nouveau_subdev_fini(&(p)->base, (s)) + +#define _nouveau_ibus_dtor _nouveau_subdev_dtor +#define _nouveau_ibus_init _nouveau_subdev_init +#define _nouveau_ibus_fini _nouveau_subdev_fini + +extern struct nouveau_oclass nve0_ibus_oclass; + +#endif diff --git a/drivers/gpu/drm/nouveau/core/subdev/device/nve0.c b/drivers/gpu/drm/nouveau/core/subdev/device/nve0.c index efb8ddcff56c..0d9d86b8124c 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/device/nve0.c +++ b/drivers/gpu/drm/nouveau/core/subdev/device/nve0.c @@ -33,6 +33,7 @@ #include #include #include +#include #include #include #include @@ -60,6 +61,7 @@ nve0_identify(struct nouveau_device *device) device->oclass[NVDEV_SUBDEV_TIMER ] = &nv04_timer_oclass; device->oclass[NVDEV_SUBDEV_FB ] = &nvc0_fb_oclass; device->oclass[NVDEV_SUBDEV_LTCG ] = &nvc0_ltcg_oclass; + device->oclass[NVDEV_SUBDEV_IBUS ] = &nve0_ibus_oclass; device->oclass[NVDEV_SUBDEV_INSTMEM] = &nv50_instmem_oclass; device->oclass[NVDEV_SUBDEV_VM ] = &nvc0_vmmgr_oclass; device->oclass[NVDEV_SUBDEV_BAR ] = &nvc0_bar_oclass; @@ -83,6 +85,7 @@ nve0_identify(struct nouveau_device *device) device->oclass[NVDEV_SUBDEV_TIMER ] = &nv04_timer_oclass; device->oclass[NVDEV_SUBDEV_FB ] = &nvc0_fb_oclass; device->oclass[NVDEV_SUBDEV_LTCG ] = &nvc0_ltcg_oclass; + device->oclass[NVDEV_SUBDEV_IBUS ] = &nve0_ibus_oclass; device->oclass[NVDEV_SUBDEV_INSTMEM] = &nv50_instmem_oclass; device->oclass[NVDEV_SUBDEV_VM ] = &nvc0_vmmgr_oclass; device->oclass[NVDEV_SUBDEV_BAR ] = &nvc0_bar_oclass; diff --git a/drivers/gpu/drm/nouveau/core/subdev/ibus/nve0.c b/drivers/gpu/drm/nouveau/core/subdev/ibus/nve0.c new file mode 100644 index 000000000000..7120124dceac --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/subdev/ibus/nve0.c @@ -0,0 +1,123 @@ +/* + * 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 + +struct nve0_ibus_priv { + struct nouveau_ibus base; +}; + +static void +nve0_ibus_intr_hub(struct nve0_ibus_priv *priv, int i) +{ + u32 addr = nv_rd32(priv, 0x122120 + (i * 0x0800)); + u32 data = nv_rd32(priv, 0x122124 + (i * 0x0800)); + u32 stat = nv_rd32(priv, 0x122128 + (i * 0x0800)); + nv_error(priv, "HUB%d: 0x%06x 0x%08x (0x%08x)\n", i, addr, data, stat); + nv_mask(priv, 0x122128 + (i * 0x0800), 0x00000200, 0x00000000); +} + +static void +nve0_ibus_intr_rop(struct nve0_ibus_priv *priv, int i) +{ + u32 addr = nv_rd32(priv, 0x124120 + (i * 0x0800)); + u32 data = nv_rd32(priv, 0x124124 + (i * 0x0800)); + u32 stat = nv_rd32(priv, 0x124128 + (i * 0x0800)); + nv_error(priv, "ROP%d: 0x%06x 0x%08x (0x%08x)\n", i, addr, data, stat); + nv_mask(priv, 0x124128 + (i * 0x0800), 0x00000200, 0x00000000); +} + +static void +nve0_ibus_intr_gpc(struct nve0_ibus_priv *priv, int i) +{ + u32 addr = nv_rd32(priv, 0x128120 + (i * 0x0800)); + u32 data = nv_rd32(priv, 0x128124 + (i * 0x0800)); + u32 stat = nv_rd32(priv, 0x128128 + (i * 0x0800)); + nv_error(priv, "GPC%d: 0x%06x 0x%08x (0x%08x)\n", i, addr, data, stat); + nv_mask(priv, 0x128128 + (i * 0x0800), 0x00000200, 0x00000000); +} + +static void +nve0_ibus_intr(struct nouveau_subdev *subdev) +{ + struct nve0_ibus_priv *priv = (void *)subdev; + u32 intr0 = nv_rd32(priv, 0x120058); + u32 intr1 = nv_rd32(priv, 0x12005c); + u32 hubnr = nv_rd32(priv, 0x120070); + u32 ropnr = nv_rd32(priv, 0x120074); + u32 gpcnr = nv_rd32(priv, 0x120078); + u32 i; + + for (i = 0; (intr0 & 0x0000ff00) && i < hubnr; i++) { + u32 stat = 0x00000100 << i; + if (intr0 & stat) { + nve0_ibus_intr_hub(priv, i); + intr0 &= ~stat; + } + } + + for (i = 0; (intr0 & 0xffff0000) && i < ropnr; i++) { + u32 stat = 0x00010000 << i; + if (intr0 & stat) { + nve0_ibus_intr_rop(priv, i); + intr0 &= ~stat; + } + } + + for (i = 0; intr1 && i < gpcnr; i++) { + u32 stat = 0x00000001 << i; + if (intr1 & stat) { + nve0_ibus_intr_gpc(priv, i); + intr1 &= ~stat; + } + } +} + +static int +nve0_ibus_ctor(struct nouveau_object *parent, struct nouveau_object *engine, + struct nouveau_oclass *oclass, void *data, u32 size, + struct nouveau_object **pobject) +{ + struct nve0_ibus_priv *priv; + int ret; + + ret = nouveau_ibus_create(parent, engine, oclass, &priv); + *pobject = nv_object(priv); + if (ret) + return ret; + + nv_subdev(priv)->intr = nve0_ibus_intr; + return 0; +} + +struct nouveau_oclass +nve0_ibus_oclass = { + .handle = NV_SUBDEV(IBUS, 0xe0), + .ofuncs = &(struct nouveau_ofuncs) { + .ctor = nve0_ibus_ctor, + .dtor = _nouveau_ibus_dtor, + .init = _nouveau_ibus_init, + .fini = _nouveau_ibus_fini, + }, +}; diff --git a/drivers/gpu/drm/nouveau/core/subdev/mc/nvc0.c b/drivers/gpu/drm/nouveau/core/subdev/mc/nvc0.c index bd9e99463ff7..c2b81e30a17d 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/mc/nvc0.c +++ b/drivers/gpu/drm/nouveau/core/subdev/mc/nvc0.c @@ -40,6 +40,7 @@ nvc0_mc_intr[] = { { 0x00200000, NVDEV_SUBDEV_GPIO }, { 0x02000000, NVDEV_SUBDEV_LTCG }, { 0x04000000, NVDEV_ENGINE_DISP }, + { 0x40000000, NVDEV_SUBDEV_IBUS }, { 0x80000000, NVDEV_ENGINE_SW }, {}, }; -- 2.30.2