drm/nouveau/mmu/r535: initial support

- Valid VRAM regions are read from GSP-RM, and used to construct our MM
- BAR1/BAR2 VMMs modified to be shared with RM
- Client VMMs have RM VASPACE objects created for them
- Adds FBSR to backup system objects in VRAM across suspend

Signed-off-by: Ben Skeggs <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: Ben Skeggs

drivers/gpu/drm/nouveau/include/nvkm/subdev/bar.h

@@ -11,6 +11,10 @@ struct nvkm_bar {
 	spinlock_t lock;
 	bool bar2;
 
+	void __iomem *flushBAR2PhysMode;
+	struct nvkm_memory *flushFBZero;
+	void __iomem *flushBAR2;
+
 	/* whether the BAR supports to be ioremapped WC or should be uncached */
 	bool iomap_uncached;
 };

drivers/gpu/drm/nouveau/include/nvkm/subdev/gsp.h

@@ -65,6 +65,13 @@ struct nvkm_gsp {
 		} heap;
 		u64 addr;
 		u64 size;
+
+		struct {
+			u64 addr;
+			u64 size;
+		} region[16];
+		int region_nr;
+		u32 rsvd_size;
 	} fb;
 
 	struct {
@@ -159,6 +166,11 @@ struct nvkm_gsp {
 	} intr[32];
 	int intr_nr;
 
+	struct {
+		u64 rm_bar1_pdb;
+		u64 rm_bar2_pdb;
+	} bar;
+
 	const struct nvkm_gsp_rm {
 		void *(*rpc_get)(struct nvkm_gsp *, u32 fn, u32 argc);
 		void *(*rpc_push)(struct nvkm_gsp *, void *argv, bool wait, u32 repc);

drivers/gpu/drm/nouveau/include/nvkm/subdev/instmem.h

@@ -24,6 +24,11 @@ struct nvkm_instmem {
 	struct nvkm_ramht  *ramht;
 	struct nvkm_memory *ramro;
 	struct nvkm_memory *ramfc;
+
+	struct {
+		struct sg_table fbsr;
+		bool fbsr_valid;
+	} rm;
 };
 
 u32 nvkm_instmem_rd32(struct nvkm_instmem *, u32 addr);

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

@@ -2,6 +2,7 @@
 #ifndef __NVKM_MMU_H__
 #define __NVKM_MMU_H__
 #include <core/subdev.h>
+#include <subdev/gsp.h>
 
 struct nvkm_vma {
 	struct list_head head;
@@ -63,6 +64,16 @@ struct nvkm_vmm {
 	void *nullp;
 
 	bool replay;
+
+	struct {
+		u64 bar2_pdb;
+
+		struct nvkm_gsp_client client;
+		struct nvkm_gsp_device device;
+		struct nvkm_gsp_object object;
+
+		struct nvkm_vma *rsvd;
+	} rm;
 };
 
 int nvkm_vmm_new(struct nvkm_device *, u64 addr, u64 size, void *argv, u32 argc,

drivers/gpu/drm/nouveau/include/nvrm/535.54.03/common/sdk/nvidia/inc/class/cl84a0.h

@@ -0,0 +1,33 @@
+#ifndef __src_common_sdk_nvidia_inc_class_cl84a0_h__
+#define __src_common_sdk_nvidia_inc_class_cl84a0_h__
+
+/* Excerpt of RM headers from https://github.com/NVIDIA/open-gpu-kernel-modules/tree/535.54.03 */
+
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 2001-2022 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * SPDX-License-Identifier: MIT
+ *
+ * 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.
+ */
+
+#define NV01_MEMORY_LIST_SYSTEM (0x00000081)
+
+#define NV01_MEMORY_LIST_FBMEM  (0x00000082)
+
+#endif

drivers/gpu/drm/nouveau/include/nvrm/535.54.03/common/sdk/nvidia/inc/class/cl90f1.h

@@ -0,0 +1,31 @@
+#ifndef __src_common_sdk_nvidia_inc_class_cl90f1_h__
+#define __src_common_sdk_nvidia_inc_class_cl90f1_h__
+
+/* Excerpt of RM headers from https://github.com/NVIDIA/open-gpu-kernel-modules/tree/535.54.03 */
+
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 2011 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * SPDX-License-Identifier: MIT
+ *
+ * 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.
+ */
+
+#define FERMI_VASPACE_A                                     (0x000090f1)
+
+#endif

drivers/gpu/drm/nouveau/include/nvrm/535.54.03/common/sdk/nvidia/inc/ctrl/ctrl2080/ctrl2080internal.h

@@ -59,4 +59,26 @@ typedef struct NV2080_CTRL_INTERNAL_INTR_GET_KERNEL_TABLE_PARAMS {
     NV2080_INTR_CATEGORY_SUBTREE_MAP                 subtreeMap[NV2080_INTR_CATEGORY_ENUM_COUNT];
 } NV2080_CTRL_INTERNAL_INTR_GET_KERNEL_TABLE_PARAMS;
 
+#define NV2080_CTRL_CMD_INTERNAL_FBSR_INIT (0x20800ac2) /* finn: Evaluated from "(FINN_NV20_SUBDEVICE_0_INTERNAL_INTERFACE_ID << 8) | NV2080_CTRL_INTERNAL_FBSR_INIT_PARAMS_MESSAGE_ID" */
+
+typedef struct NV2080_CTRL_INTERNAL_FBSR_INIT_PARAMS {
+    NvU32    fbsrType;
+    NvU32    numRegions;
+    NvHandle hClient;
+    NvHandle hSysMem;
+    NV_DECLARE_ALIGNED(NvU64 gspFbAllocsSysOffset, 8);
+    NvBool   bEnteringGcoffState;
+} NV2080_CTRL_INTERNAL_FBSR_INIT_PARAMS;
+
+#define NV2080_CTRL_CMD_INTERNAL_FBSR_SEND_REGION_INFO (0x20800ac3) /* finn: Evaluated from "(FINN_NV20_SUBDEVICE_0_INTERNAL_INTERFACE_ID << 8) | NV2080_CTRL_INTERNAL_FBSR_SEND_REGION_INFO_PARAMS_MESSAGE_ID" */
+
+typedef struct NV2080_CTRL_INTERNAL_FBSR_SEND_REGION_INFO_PARAMS {
+    NvU32    fbsrType;
+    NvHandle hClient;
+    NvHandle hVidMem;
+    NV_DECLARE_ALIGNED(NvU64 vidOffset, 8);
+    NV_DECLARE_ALIGNED(NvU64 sysOffset, 8);
+    NV_DECLARE_ALIGNED(NvU64 size, 8);
+} NV2080_CTRL_INTERNAL_FBSR_SEND_REGION_INFO_PARAMS;
+
 #endif

drivers/gpu/drm/nouveau/include/nvrm/535.54.03/common/sdk/nvidia/inc/ctrl/ctrl90f1.h

@@ -0,0 +1,95 @@
+#ifndef __src_common_sdk_nvidia_inc_ctrl_ctrl90f1_h__
+#define __src_common_sdk_nvidia_inc_ctrl_ctrl90f1_h__
+
+/* Excerpt of RM headers from https://github.com/NVIDIA/open-gpu-kernel-modules/tree/535.54.03 */
+
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 2014-2021 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * SPDX-License-Identifier: MIT
+ *
+ * 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.
+ */
+
+#define GMMU_FMT_MAX_LEVELS  6U
+
+#define NV90F1_CTRL_CMD_VASPACE_COPY_SERVER_RESERVED_PDES (0x90f10106U) /* finn: Evaluated from "(FINN_FERMI_VASPACE_A_VASPACE_INTERFACE_ID << 8) | NV90F1_CTRL_VASPACE_COPY_SERVER_RESERVED_PDES_PARAMS_MESSAGE_ID" */
+
+typedef struct NV90F1_CTRL_VASPACE_COPY_SERVER_RESERVED_PDES_PARAMS {
+    /*!
+     * [in] GPU sub-device handle - this API only supports unicast.
+     *      Pass 0 to use subDeviceId instead.
+     */
+    NvHandle hSubDevice;
+
+    /*!
+     * [in] GPU sub-device ID. Ignored if hSubDevice is non-zero.
+     */
+    NvU32    subDeviceId;
+
+    /*!
+     * [in] Page size (VA coverage) of the level to reserve.
+     *      This need not be a leaf (page table) page size - it can be
+     *      the coverage of an arbitrary level (including root page directory).
+     */
+    NV_DECLARE_ALIGNED(NvU64 pageSize, 8);
+
+    /*!
+     * [in] First GPU virtual address of the range to reserve.
+     *      This must be aligned to pageSize.
+     */
+    NV_DECLARE_ALIGNED(NvU64 virtAddrLo, 8);
+
+    /*!
+     * [in] Last GPU virtual address of the range to reserve.
+     *      This (+1) must be aligned to pageSize.
+     */
+    NV_DECLARE_ALIGNED(NvU64 virtAddrHi, 8);
+
+    /*! 
+     * [in] Number of PDE levels to copy.
+     */
+    NvU32    numLevelsToCopy;
+
+   /*!
+     * [in] Per-level information.
+     */
+    struct {
+        /*!
+         * Physical address of this page level instance.
+         */
+        NV_DECLARE_ALIGNED(NvU64 physAddress, 8);
+
+        /*!
+         * Size in bytes allocated for this level instance.
+         */
+        NV_DECLARE_ALIGNED(NvU64 size, 8);
+
+        /*!
+         * Aperture in which this page level instance resides.
+         */
+        NvU32 aperture;
+
+        /*!
+         * Page shift corresponding to the level
+         */
+        NvU8  pageShift;
+    } levels[GMMU_FMT_MAX_LEVELS];
+} NV90F1_CTRL_VASPACE_COPY_SERVER_RESERVED_PDES_PARAMS;
+
+#endif

drivers/gpu/drm/nouveau/include/nvrm/535.54.03/common/sdk/nvidia/inc/nvos.h

@@ -0,0 +1,94 @@
+#ifndef __src_common_sdk_nvidia_inc_nvos_h__
+#define __src_common_sdk_nvidia_inc_nvos_h__
+
+/* Excerpt of RM headers from https://github.com/NVIDIA/open-gpu-kernel-modules/tree/535.54.03 */
+
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 1993-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * SPDX-License-Identifier: MIT
+ *
+ * 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.
+ */
+
+#define NVOS02_FLAGS_PHYSICALITY                                   7:4
+#define NVOS02_FLAGS_PHYSICALITY_CONTIGUOUS                        (0x00000000)
+#define NVOS02_FLAGS_PHYSICALITY_NONCONTIGUOUS                     (0x00000001)
+#define NVOS02_FLAGS_LOCATION                                      11:8
+#define NVOS02_FLAGS_LOCATION_PCI                                  (0x00000000)
+#define NVOS02_FLAGS_LOCATION_AGP                                  (0x00000001)
+#define NVOS02_FLAGS_LOCATION_VIDMEM                               (0x00000002)
+#define NVOS02_FLAGS_COHERENCY                                     15:12
+#define NVOS02_FLAGS_COHERENCY_UNCACHED                            (0x00000000)
+#define NVOS02_FLAGS_COHERENCY_CACHED                              (0x00000001)
+#define NVOS02_FLAGS_COHERENCY_WRITE_COMBINE                       (0x00000002)
+#define NVOS02_FLAGS_COHERENCY_WRITE_THROUGH                       (0x00000003)
+#define NVOS02_FLAGS_COHERENCY_WRITE_PROTECT                       (0x00000004)
+#define NVOS02_FLAGS_COHERENCY_WRITE_BACK                          (0x00000005)
+#define NVOS02_FLAGS_ALLOC                                         17:16
+#define NVOS02_FLAGS_ALLOC_NONE                                    (0x00000001)
+#define NVOS02_FLAGS_GPU_CACHEABLE                                 18:18
+#define NVOS02_FLAGS_GPU_CACHEABLE_NO                              (0x00000000)
+#define NVOS02_FLAGS_GPU_CACHEABLE_YES                             (0x00000001)
+
+#define NVOS02_FLAGS_KERNEL_MAPPING                                19:19
+#define NVOS02_FLAGS_KERNEL_MAPPING_NO_MAP                         (0x00000000)
+#define NVOS02_FLAGS_KERNEL_MAPPING_MAP                            (0x00000001)
+#define NVOS02_FLAGS_ALLOC_NISO_DISPLAY                            20:20
+#define NVOS02_FLAGS_ALLOC_NISO_DISPLAY_NO                         (0x00000000)
+#define NVOS02_FLAGS_ALLOC_NISO_DISPLAY_YES                        (0x00000001)
+
+#define NVOS02_FLAGS_ALLOC_USER_READ_ONLY                          21:21
+#define NVOS02_FLAGS_ALLOC_USER_READ_ONLY_NO                       (0x00000000)
+#define NVOS02_FLAGS_ALLOC_USER_READ_ONLY_YES                      (0x00000001)
+
+#define NVOS02_FLAGS_ALLOC_DEVICE_READ_ONLY                        22:22
+#define NVOS02_FLAGS_ALLOC_DEVICE_READ_ONLY_NO                     (0x00000000)
+#define NVOS02_FLAGS_ALLOC_DEVICE_READ_ONLY_YES                    (0x00000001)
+
+#define NVOS02_FLAGS_PEER_MAP_OVERRIDE                             23:23
+#define NVOS02_FLAGS_PEER_MAP_OVERRIDE_DEFAULT                     (0x00000000)
+#define NVOS02_FLAGS_PEER_MAP_OVERRIDE_REQUIRED                    (0x00000001)
+
+#define NVOS02_FLAGS_ALLOC_TYPE_SYNCPOINT                          24:24
+#define NVOS02_FLAGS_ALLOC_TYPE_SYNCPOINT_APERTURE                 (0x00000001)
+
+#define NVOS02_FLAGS_MEMORY_PROTECTION                             26:25
+#define NVOS02_FLAGS_MEMORY_PROTECTION_DEFAULT                     (0x00000000)
+#define NVOS02_FLAGS_MEMORY_PROTECTION_PROTECTED                   (0x00000001)
+#define NVOS02_FLAGS_MEMORY_PROTECTION_UNPROTECTED                 (0x00000002)
+
+#define NVOS02_FLAGS_MAPPING                                       31:30
+#define NVOS02_FLAGS_MAPPING_DEFAULT                               (0x00000000)
+#define NVOS02_FLAGS_MAPPING_NO_MAP                                (0x00000001)
+#define NVOS02_FLAGS_MAPPING_NEVER_MAP                             (0x00000002)
+
+typedef struct
+{
+    NvU32   index;
+    NvV32   flags;
+    NvU64   vaSize NV_ALIGN_BYTES(8);
+    NvU64   vaStartInternal NV_ALIGN_BYTES(8);
+    NvU64   vaLimitInternal NV_ALIGN_BYTES(8);
+    NvU32   bigPageSize;
+    NvU64   vaBase NV_ALIGN_BYTES(8);
+} NV_VASPACE_ALLOCATION_PARAMETERS;
+
+#define NV_VASPACE_ALLOCATION_INDEX_GPU_NEW                                 0x00 //<! Create new VASpace, by default
+
+#endif

drivers/gpu/drm/nouveau/include/nvrm/535.54.03/nvidia/generated/g_fbsr_nvoc.h

@@ -0,0 +1,31 @@
+#ifndef __src_nvidia_generated_g_fbsr_nvoc_h__
+#define __src_nvidia_generated_g_fbsr_nvoc_h__
+
+/* Excerpt of RM headers from https://github.com/NVIDIA/open-gpu-kernel-modules/tree/535.54.03 */
+
+/*
+ * SPDX-FileCopyrightText: Copyright (c) 2009-2021 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
+ * SPDX-License-Identifier: MIT
+ *
+ * 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.
+ */
+
+#define FBSR_TYPE_DMA                                 4   // Copy using DMA. Fastest.
+
+#endif