From e94654e21d2a25ab331c91ad26a573dc7514f7b9 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Mon, 11 Aug 2014 12:23:23 +1000 Subject: [PATCH] drm/nouveau/bar: ioremap only the areas that we're actually using Signed-off-by: Ben Skeggs --- .../gpu/drm/nouveau/core/include/subdev/bar.h | 1 - .../gpu/drm/nouveau/core/subdev/bar/base.c | 38 +++++++++---------- 2 files changed, 19 insertions(+), 20 deletions(-) diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/bar.h b/drivers/gpu/drm/nouveau/core/include/subdev/bar.h index be037fac534c..257ddf6d36d4 100644 --- a/drivers/gpu/drm/nouveau/core/include/subdev/bar.h +++ b/drivers/gpu/drm/nouveau/core/include/subdev/bar.h @@ -12,7 +12,6 @@ struct nouveau_bar { int (*alloc)(struct nouveau_bar *, struct nouveau_object *, struct nouveau_mem *, struct nouveau_object **); - void __iomem *iomem; int (*kmap)(struct nouveau_bar *, struct nouveau_mem *, u32 flags, struct nouveau_vma *); diff --git a/drivers/gpu/drm/nouveau/core/subdev/bar/base.c b/drivers/gpu/drm/nouveau/core/subdev/bar/base.c index 8bcbdf39cfb2..b1adc69efd88 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/bar/base.c +++ b/drivers/gpu/drm/nouveau/core/subdev/bar/base.c @@ -38,10 +38,12 @@ struct nouveau_barobj { static int nouveau_barobj_ctor(struct nouveau_object *parent, struct nouveau_object *engine, - struct nouveau_oclass *oclass, void *mem, u32 size, + struct nouveau_oclass *oclass, void *data, u32 size, struct nouveau_object **pobject) { + struct nouveau_device *device = nv_device(parent); struct nouveau_bar *bar = (void *)engine; + struct nouveau_mem *mem = data; struct nouveau_barobj *barobj; int ret; @@ -54,7 +56,13 @@ nouveau_barobj_ctor(struct nouveau_object *parent, if (ret) return ret; - barobj->iomem = bar->iomem + (u32)barobj->vma.offset; + barobj->iomem = ioremap(nv_device_resource_start(device, 3) + + (u32)barobj->vma.offset, mem->size << 12); + if (!barobj->iomem) { + nv_warn(bar, "PRAMIN ioremap failed\n"); + return -ENOMEM; + } + return 0; } @@ -63,8 +71,11 @@ nouveau_barobj_dtor(struct nouveau_object *object) { struct nouveau_bar *bar = (void *)object->engine; struct nouveau_barobj *barobj = (void *)object; - if (barobj->vma.node) + if (barobj->vma.node) { + if (barobj->iomem) + iounmap(barobj->iomem); bar->unmap(bar, &barobj->vma); + } nouveau_object_destroy(&barobj->base); } @@ -99,12 +110,11 @@ nouveau_bar_alloc(struct nouveau_bar *bar, struct nouveau_object *parent, struct nouveau_mem *mem, struct nouveau_object **pobject) { struct nouveau_object *engine = nv_object(bar); - int ret = -ENOMEM; - if (bar->iomem) { - ret = nouveau_object_ctor(parent, engine, - &nouveau_barobj_oclass, - mem, 0, pobject); - } + struct nouveau_object *gpuobj; + int ret = nouveau_object_ctor(parent, engine, &nouveau_barobj_oclass, + mem, 0, &gpuobj); + if (ret == 0) + *pobject = gpuobj; return ret; } @@ -113,7 +123,6 @@ nouveau_bar_create_(struct nouveau_object *parent, struct nouveau_object *engine, struct nouveau_oclass *oclass, int length, void **pobject) { - struct nouveau_device *device = nv_device(parent); struct nouveau_bar *bar; int ret; @@ -123,21 +132,12 @@ nouveau_bar_create_(struct nouveau_object *parent, if (ret) return ret; - if (nv_device_resource_len(device, 3) != 0) { - bar->iomem = ioremap(nv_device_resource_start(device, 3), - nv_device_resource_len(device, 3)); - if (!bar->iomem) - nv_warn(bar, "PRAMIN ioremap failed\n"); - } - return 0; } void nouveau_bar_destroy(struct nouveau_bar *bar) { - if (bar->iomem) - iounmap(bar->iomem); nouveau_subdev_destroy(&bar->base); } -- 2.20.1