--- /dev/null
+/*
+ * Copyright (c) 2014, 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 "nvc0.h"
+
+struct gk20a_fb_priv {
+ struct nouveau_fb base;
+};
+
+static int
+gk20a_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
+ struct nouveau_oclass *oclass, void *data, u32 size,
+ struct nouveau_object **pobject)
+{
+ struct gk20a_fb_priv *priv;
+ int ret;
+
+ ret = nouveau_fb_create(parent, engine, oclass, &priv);
+ *pobject = nv_object(priv);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+struct nouveau_oclass *
+gk20a_fb_oclass = &(struct nouveau_fb_impl) {
+ .base.handle = NV_SUBDEV(FB, 0xea),
+ .base.ofuncs = &(struct nouveau_ofuncs) {
+ .ctor = gk20a_fb_ctor,
+ .dtor = _nouveau_fb_dtor,
+ .init = _nouveau_fb_init,
+ .fini = _nouveau_fb_fini,
+ },
+ .memtype = nvc0_fb_memtype_valid,
+ .ram = &gk20a_ram_oclass,
+}.base;
--- /dev/null
+/*
+ * Copyright (c) 2014, 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 "priv.h"
+
+#include <subdev/fb.h>
+
+struct gk20a_mem {
+ struct nouveau_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 nouveau_fb *pfb, struct nouveau_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);
+}
+
+static int
+gk20a_ram_get(struct nouveau_fb *pfb, u64 size, u32 align, u32 ncmin,
+ u32 memtype, struct nouveau_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;
+}
+
+static int
+gk20a_ram_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
+ struct nouveau_oclass *oclass, void *data, u32 datasize,
+ struct nouveau_object **pobject)
+{
+ struct nouveau_ram *ram;
+ int ret;
+
+ ret = nouveau_ram_create(parent, engine, oclass, &ram);
+ *pobject = nv_object(ram);
+ if (ret)
+ return ret;
+ ram->type = NV_MEM_TYPE_STOLEN;
+ ram->size = get_num_physpages() << PAGE_SHIFT;
+
+ ram->get = gk20a_ram_get;
+ ram->put = gk20a_ram_put;
+
+ return 0;
+}
+
+struct nouveau_oclass
+gk20a_ram_oclass = {
+ .ofuncs = &(struct nouveau_ofuncs) {
+ .ctor = gk20a_ram_ctor,
+ .dtor = _nouveau_ram_dtor,
+ .init = _nouveau_ram_init,
+ .fini = _nouveau_ram_fini,
+ },
+};
projects / platform / kernel / linux-rpi3.git / commitdiff