[Nouveau] [PATCH 2/6] instmem/gk20a: move memory allocation to instmem
Alexandre Courbot
acourbot at nvidia.com
Fri Jan 23 00:53:54 PST 2015
GK20A does not have dedicated RAM, thus having a RAM device for it does
not make sense. Move the contiguous physical memory allocation to
instmem.
Signed-off-by: Alexandre Courbot <acourbot at nvidia.com>
---
drm/nouveau/include/nvkm/subdev/instmem.h | 1 +
drm/nouveau/nvkm/engine/device/gk104.c | 2 +-
drm/nouveau/nvkm/subdev/fb/ramgk20a.c | 86 +-----------
drm/nouveau/nvkm/subdev/instmem/Kbuild | 1 +
drm/nouveau/nvkm/subdev/instmem/gk20a.c | 212 ++++++++++++++++++++++++++++++
5 files changed, 217 insertions(+), 85 deletions(-)
create mode 100644 drm/nouveau/nvkm/subdev/instmem/gk20a.c
diff --git a/drm/nouveau/include/nvkm/subdev/instmem.h b/drm/nouveau/include/nvkm/subdev/instmem.h
index d104c1a..1bcb763 100644
--- a/drm/nouveau/include/nvkm/subdev/instmem.h
+++ b/drm/nouveau/include/nvkm/subdev/instmem.h
@@ -45,4 +45,5 @@ nvkm_instmem(void *obj)
extern struct nvkm_oclass *nv04_instmem_oclass;
extern struct nvkm_oclass *nv40_instmem_oclass;
extern struct nvkm_oclass *nv50_instmem_oclass;
+extern struct nvkm_oclass *gk20a_instmem_oclass;
#endif
diff --git a/drm/nouveau/nvkm/engine/device/gk104.c b/drm/nouveau/nvkm/engine/device/gk104.c
index bf58934..8f266a9 100644
--- a/drm/nouveau/nvkm/engine/device/gk104.c
+++ b/drm/nouveau/nvkm/engine/device/gk104.c
@@ -171,7 +171,7 @@ gk104_identify(struct nvkm_device *device)
device->oclass[NVDEV_SUBDEV_FB ] = gk20a_fb_oclass;
device->oclass[NVDEV_SUBDEV_LTC ] = gk104_ltc_oclass;
device->oclass[NVDEV_SUBDEV_IBUS ] = &gk20a_ibus_oclass;
- device->oclass[NVDEV_SUBDEV_INSTMEM] = nv50_instmem_oclass;
+ device->oclass[NVDEV_SUBDEV_INSTMEM] = gk20a_instmem_oclass;
device->oclass[NVDEV_SUBDEV_MMU ] = &gf100_mmu_oclass;
device->oclass[NVDEV_SUBDEV_BAR ] = &gk20a_bar_oclass;
device->oclass[NVDEV_ENGINE_DMAOBJ ] = gf110_dmaeng_oclass;
diff --git a/drm/nouveau/nvkm/subdev/fb/ramgk20a.c b/drm/nouveau/nvkm/subdev/fb/ramgk20a.c
index 5f30db1..60d8e1c 100644
--- a/drm/nouveau/nvkm/subdev/fb/ramgk20a.c
+++ b/drm/nouveau/nvkm/subdev/fb/ramgk20a.c
@@ -23,99 +23,17 @@
#include <core/device.h>
-struct gk20a_mem {
- struct nvkm_mem base;
- void *cpuaddr;
- dma_addr_t handle;
-};
-#define to_gk20a_mem(m) container_of(m, struct gk20a_mem, base)
-
static void
gk20a_ram_put(struct nvkm_fb *pfb, struct nvkm_mem **pmem)
{
- struct device *dev = nv_device_base(nv_device(pfb));
- struct gk20a_mem *mem = to_gk20a_mem(*pmem);
-
- *pmem = NULL;
- if (unlikely(mem == NULL))
- return;
-
- if (likely(mem->cpuaddr))
- dma_free_coherent(dev, mem->base.size << PAGE_SHIFT,
- mem->cpuaddr, mem->handle);
-
- kfree(mem->base.pages);
- kfree(mem);
+ BUG();
}
static int
gk20a_ram_get(struct nvkm_fb *pfb, u64 size, u32 align, u32 ncmin,
u32 memtype, struct nvkm_mem **pmem)
{
- struct device *dev = nv_device_base(nv_device(pfb));
- struct gk20a_mem *mem;
- u32 type = memtype & 0xff;
- u32 npages, order;
- int i;
-
- nv_debug(pfb, "%s: size: %llx align: %x, ncmin: %x\n", __func__, size,
- align, ncmin);
-
- npages = size >> PAGE_SHIFT;
- if (npages == 0)
- npages = 1;
-
- if (align == 0)
- align = PAGE_SIZE;
- align >>= PAGE_SHIFT;
-
- /* round alignment to the next power of 2, if needed */
- order = fls(align);
- if ((align & (align - 1)) == 0)
- order--;
- align = BIT(order);
-
- /* ensure returned address is correctly aligned */
- npages = max(align, npages);
-
- mem = kzalloc(sizeof(*mem), GFP_KERNEL);
- if (!mem)
- return -ENOMEM;
-
- mem->base.size = npages;
- mem->base.memtype = type;
-
- mem->base.pages = kzalloc(sizeof(dma_addr_t) * npages, GFP_KERNEL);
- if (!mem->base.pages) {
- kfree(mem);
- return -ENOMEM;
- }
-
- *pmem = &mem->base;
-
- mem->cpuaddr = dma_alloc_coherent(dev, npages << PAGE_SHIFT,
- &mem->handle, GFP_KERNEL);
- if (!mem->cpuaddr) {
- nv_error(pfb, "%s: cannot allocate memory!\n", __func__);
- gk20a_ram_put(pfb, pmem);
- return -ENOMEM;
- }
-
- align <<= PAGE_SHIFT;
-
- /* alignment check */
- if (unlikely(mem->handle & (align - 1)))
- nv_warn(pfb, "memory not aligned as requested: %pad (0x%x)\n",
- &mem->handle, align);
-
- nv_debug(pfb, "alloc size: 0x%x, align: 0x%x, paddr: %pad, vaddr: %p\n",
- npages << PAGE_SHIFT, align, &mem->handle, mem->cpuaddr);
-
- for (i = 0; i < npages; i++)
- mem->base.pages[i] = mem->handle + (PAGE_SIZE * i);
-
- mem->base.offset = (u64)mem->base.pages[0];
- return 0;
+ BUG();
}
static int
diff --git a/drm/nouveau/nvkm/subdev/instmem/Kbuild b/drm/nouveau/nvkm/subdev/instmem/Kbuild
index e6f35ab..13bb7fc 100644
--- a/drm/nouveau/nvkm/subdev/instmem/Kbuild
+++ b/drm/nouveau/nvkm/subdev/instmem/Kbuild
@@ -2,3 +2,4 @@ nvkm-y += nvkm/subdev/instmem/base.o
nvkm-y += nvkm/subdev/instmem/nv04.o
nvkm-y += nvkm/subdev/instmem/nv40.o
nvkm-y += nvkm/subdev/instmem/nv50.o
+nvkm-y += nvkm/subdev/instmem/gk20a.o
diff --git a/drm/nouveau/nvkm/subdev/instmem/gk20a.c b/drm/nouveau/nvkm/subdev/instmem/gk20a.c
new file mode 100644
index 0000000..6176f50
--- /dev/null
+++ b/drm/nouveau/nvkm/subdev/instmem/gk20a.c
@@ -0,0 +1,212 @@
+/*
+ * Copyright (c) 2015, NVIDIA CORPORATION. All rights reserved.
+ *
+ * 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 AUTHORS OR COPYRIGHT HOLDERS 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 <subdev/fb.h>
+#include <core/mm.h>
+#include <core/device.h>
+
+#include "priv.h"
+
+struct gk20a_instobj_priv {
+ struct nvkm_instobj base;
+ /* Must be second member here - see nouveau_gpuobj_map_vm() */
+ struct nvkm_mem *mem;
+ /* Pointed by mem */
+ struct nvkm_mem _mem;
+ void *cpuaddr;
+ dma_addr_t handle;
+ struct nvkm_mm_node r;
+};
+
+struct gk20a_instmem_priv {
+ struct nvkm_instmem base;
+ spinlock_t lock;
+ u64 addr;
+};
+
+static u32
+gk20a_instobj_rd32(struct nvkm_object *object, u64 offset)
+{
+ struct gk20a_instmem_priv *priv = (void *)nvkm_instmem(object);
+ struct gk20a_instobj_priv *node = (void *)object;
+ unsigned long flags;
+ u64 base = (node->mem->offset + offset) & 0xffffff00000ULL;
+ u64 addr = (node->mem->offset + offset) & 0x000000fffffULL;
+ u32 data;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if (unlikely(priv->addr != base)) {
+ nv_wr32(priv, 0x001700, base >> 16);
+ priv->addr = base;
+ }
+ data = nv_rd32(priv, 0x700000 + addr);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ return data;
+}
+
+static void
+gk20a_instobj_wr32(struct nvkm_object *object, u64 offset, u32 data)
+{
+ struct gk20a_instmem_priv *priv = (void *)nvkm_instmem(object);
+ struct gk20a_instobj_priv *node = (void *)object;
+ unsigned long flags;
+ u64 base = (node->mem->offset + offset) & 0xffffff00000ULL;
+ u64 addr = (node->mem->offset + offset) & 0x000000fffffULL;
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if (unlikely(priv->addr != base)) {
+ nv_wr32(priv, 0x001700, base >> 16);
+ priv->addr = base;
+ }
+ nv_wr32(priv, 0x700000 + addr, data);
+ spin_unlock_irqrestore(&priv->lock, flags);
+}
+
+static void
+gk20a_instobj_dtor(struct nvkm_object *object)
+{
+ struct gk20a_instobj_priv *node = (void *)object;
+ struct gk20a_instmem_priv *priv = (void *)nvkm_instmem(node);
+ struct device *dev = nv_device_base(nv_device(priv));
+
+ if (unlikely(!node->handle))
+ return;
+
+ dma_free_coherent(dev, node->mem->size << PAGE_SHIFT, node->cpuaddr,
+ node->handle);
+
+ nvkm_instobj_destroy(&node->base);
+}
+
+static int
+gk20a_instobj_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
+ struct nvkm_oclass *oclass, void *data, u32 _size,
+ struct nvkm_object **pobject)
+{
+ struct nvkm_instobj_args *args = data;
+ struct gk20a_instmem_priv *priv = (void *)nvkm_instmem(parent);
+ struct device *dev = nv_device_base(nv_device(priv));
+ struct gk20a_instobj_priv *node;
+ u32 size, align;
+ u32 npages;
+ int ret;
+
+ nv_debug(parent, "%s: size: %x align: %x\n", __func__,
+ args->size, args->align);
+
+ size = max((args->size + 4095) & ~4095, (u32)4096);
+ align = max((args->align + 4095) & ~4095, (u32)4096);
+
+ npages = size >> PAGE_SHIFT;
+
+ ret = nvkm_instobj_create_(parent, engine, oclass, sizeof(*node),
+ (void **)&node);
+ *pobject = nv_object(node);
+ if (ret)
+ return ret;
+
+ node->mem = &node->_mem;
+
+ node->cpuaddr = dma_alloc_coherent(dev, npages << PAGE_SHIFT,
+ &node->handle, GFP_KERNEL);
+ if (!node->cpuaddr) {
+ nv_error(priv, "cannot allocate DMA memory\n");
+ return -ENOMEM;
+ }
+
+ /* alignment check */
+ if (unlikely(node->handle & (align - 1)))
+ nv_warn(priv, "memory not aligned as requested: %pad (0x%x)\n",
+ &node->handle, align);
+
+ node->mem->offset = node->handle;
+ node->mem->size = size >> 12;
+ node->mem->memtype = 0;
+ node->mem->page_shift = 12;
+ INIT_LIST_HEAD(&node->mem->regions);
+
+ node->r.type = 12;
+ node->r.offset = node->handle >> 12;
+ node->r.length = npages;
+ list_add_tail(&node->r.rl_entry, &node->mem->regions);
+
+ node->base.addr = node->mem->offset;
+ node->base.size = size;
+
+ nv_debug(parent, "alloc size: 0x%x, align: 0x%x, gaddr: 0x%llx\n",
+ size, align, node->mem->offset);
+
+ return 0;
+}
+
+static struct nvkm_instobj_impl
+gk20a_instobj_oclass = {
+ .base.ofuncs = &(struct nvkm_ofuncs) {
+ .ctor = gk20a_instobj_ctor,
+ .dtor = gk20a_instobj_dtor,
+ .init = _nvkm_instobj_init,
+ .fini = _nvkm_instobj_fini,
+ .rd32 = gk20a_instobj_rd32,
+ .wr32 = gk20a_instobj_wr32,
+ },
+};
+
+
+
+static int
+gk20a_instmem_fini(struct nvkm_object *object, bool suspend)
+{
+ struct gk20a_instmem_priv *priv = (void *)object;
+ priv->addr = ~0ULL;
+ return nvkm_instmem_fini(&priv->base, suspend);
+}
+
+static int
+gk20a_instmem_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
+ struct nvkm_oclass *oclass, void *data, u32 size,
+ struct nvkm_object **pobject)
+{
+ struct gk20a_instmem_priv *priv;
+ int ret;
+
+ ret = nvkm_instmem_create(parent, engine, oclass, &priv);
+ *pobject = nv_object(priv);
+ if (ret)
+ return ret;
+
+ spin_lock_init(&priv->lock);
+
+ return 0;
+}
+
+struct nvkm_oclass *
+gk20a_instmem_oclass = &(struct nvkm_instmem_impl) {
+ .base.handle = NV_SUBDEV(INSTMEM, 0xea),
+ .base.ofuncs = &(struct nvkm_ofuncs) {
+ .ctor = gk20a_instmem_ctor,
+ .dtor = _nvkm_instmem_dtor,
+ .init = _nvkm_instmem_init,
+ .fini = gk20a_instmem_fini,
+ },
+ .instobj = &gk20a_instobj_oclass.base,
+}.base;
+
--
2.2.2
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