drm/nouveau/mmu/nv50,g84: type-based vram allocation and bar mapping

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drivers/gpu/drm/nouveau/include/nvif/class.h

@@ -16,6 +16,7 @@
 
 #define NVIF_CLASS_MEM                               /* if000a.h */  0x8000000a
 #define NVIF_CLASS_MEM_NV04                          /* if000b.h */  0x8000000b
+#define NVIF_CLASS_MEM_NV50                          /* if500b.h */  0x8000500b
 
 #define NVIF_CLASS_VMM                               /* if000c.h */  0x8000000c
 #define NVIF_CLASS_VMM_NV04                          /* if000d.h */  0x8000000d

drivers/gpu/drm/nouveau/include/nvif/if500b.h

+#ifndef __NVIF_IF500B_H__
+#define __NVIF_IF500B_H__
+#include "if000a.h"
+
+struct nv50_mem_vn {
+	/* nvif_mem_vX ... */
+};
+
+struct nv50_mem_v0 {
+	/* nvif_mem_vX ... */
+	__u8  version;
+	__u8  bankswz;
+	__u8  contig;
+};
+
+struct nv50_mem_map_vn {
+};
+
+struct nv50_mem_map_v0 {
+	__u8  version;
+	__u8  ro;
+	__u8  kind;
+	__u8  comp;
+};
+#endif

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/Kbuild

@@ -14,6 +14,7 @@ nvkm-y += nvkm/subdev/mmu/gp10b.o
 
 nvkm-y += nvkm/subdev/mmu/mem.o
 nvkm-y += nvkm/subdev/mmu/memnv04.o
+nvkm-y += nvkm/subdev/mmu/memnv50.o
 
 nvkm-y += nvkm/subdev/mmu/vmm.o
 nvkm-y += nvkm/subdev/mmu/vmmnv04.o

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/g84.c

@@ -19,6 +19,7 @@
  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  * OTHER DEALINGS IN THE SOFTWARE.
  */
+#include "mem.h"
 #include "vmm.h"
 
 #include <nvif/class.h>
@@ -28,6 +29,7 @@ g84_mmu = {
 	.limit = (1ULL << 40),
 	.dma_bits = 40,
 	.lpg_shift = 16,
+	.mem = {{ -1,  0, NVIF_CLASS_MEM_NV50}, nv50_mem_new, nv50_mem_map },
 	.vmm = {{ -1, -1, NVIF_CLASS_VMM_NV50}, nv50_vmm_new, false, 0x0200 },
 	.kind = nv50_mmu_kind,
 	.kind_sys = true,

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/mem.h

@@ -10,4 +10,9 @@ int nv04_mem_new(struct nvkm_mmu *, int, u8, u64, void *, u32,
 		 struct nvkm_memory **);
 int nv04_mem_map(struct nvkm_mmu *, struct nvkm_memory *, void *, u32,
 		 u64 *, u64 *, struct nvkm_vma **);
+
+int nv50_mem_new(struct nvkm_mmu *, int, u8, u64, void *, u32,
+		 struct nvkm_memory **);
+int nv50_mem_map(struct nvkm_mmu *, struct nvkm_memory *, void *, u32,
+		 u64 *, u64 *, struct nvkm_vma **);
 #endif

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/memnv50.c

+/*
+ * Copyright 2017 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.
+ */
+#include "mem.h"
+
+#include <core/memory.h>
+#include <subdev/bar.h>
+#include <subdev/fb.h>
+
+#include <nvif/class.h>
+#include <nvif/if500b.h>
+#include <nvif/if500d.h>
+#include <nvif/unpack.h>
+
+int
+nv50_mem_map(struct nvkm_mmu *mmu, struct nvkm_memory *memory, void *argv,
+	     u32 argc, u64 *paddr, u64 *psize, struct nvkm_vma **pvma)
+{
+	struct nv50_vmm_map_v0 uvmm = {};
+	union {
+		struct nv50_mem_map_vn vn;
+		struct nv50_mem_map_v0 v0;
+	} *args = argv;
+	struct nvkm_device *device = mmu->subdev.device;
+	struct nvkm_vmm *bar = nvkm_bar_bar1_vmm(device);
+	u64 size = nvkm_memory_size(memory);
+	int ret = -ENOSYS;
+
+	if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
+		uvmm.ro   = args->v0.ro;
+		uvmm.kind = args->v0.kind;
+		uvmm.comp = args->v0.comp;
+	} else
+	if (!(ret = nvif_unvers(ret, &argv, &argc, args->vn))) {
+	} else
+		return ret;
+
+	ret = nvkm_vmm_get(bar, 12, size, pvma);
+	if (ret)
+		return ret;
+
+	*paddr = device->func->resource_addr(device, 1) + (*pvma)->addr;
+	*psize = (*pvma)->size;
+	return nvkm_memory_map(memory, 0, bar, *pvma, &uvmm, sizeof(uvmm));
+}
+
+int
+nv50_mem_new(struct nvkm_mmu *mmu, int type, u8 page, u64 size,
+	     void *argv, u32 argc, struct nvkm_memory **pmemory)
+{
+	union {
+		struct nv50_mem_vn vn;
+		struct nv50_mem_v0 v0;
+	} *args = argv;
+	int ret = -ENOSYS;
+	bool contig;
+
+	if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) {
+		type   = args->v0.bankswz ? 0x02 : 0x01;
+		contig = args->v0.contig;
+	} else
+	if (!(ret = nvif_unvers(ret, &argv, &argc, args->vn))) {
+		type   = 0x01;
+		contig = false;
+	} else
+		return -ENOSYS;
+
+	return nvkm_ram_get(mmu->subdev.device, NVKM_RAM_MM_NORMAL, type,
+			    page, size, contig, false, pmemory);
+}

drivers/gpu/drm/nouveau/nvkm/subdev/mmu/nv50.c

@@ -21,6 +21,7 @@
  *
  * Authors: Ben Skeggs
  */
+#include "mem.h"
 #include "vmm.h"
 
 #include <nvif/class.h>
@@ -64,6 +65,7 @@ nv50_mmu = {
 	.limit = (1ULL << 40),
 	.dma_bits = 40,
 	.lpg_shift = 16,
+	.mem = {{ -1,  0, NVIF_CLASS_MEM_NV50}, nv50_mem_new, nv50_mem_map },
 	.vmm = {{ -1, -1, NVIF_CLASS_VMM_NV50}, nv50_vmm_new, false, 0x1400 },
 	.kind = nv50_mmu_kind,
 };