drm/nouveau: add support for GH100

This commit enables basic support for Hopper GPUs, and is intended
primarily as a base supporting Blackwell GPUs, which reuse most of
the code added here.

Advanced features such as Confidential Compute are not supported.

Beyond a few miscellaneous register moves and HW class ID plumbing,
the bulk of the changes implemented here are to support the GSP-RM
boot sequence used on Hopper/Blackwell GPUs, as well as a new page
table layout.

There should be no changes here that impact prior GPUs.

Signed-off-by: Ben Skeggs <[email protected]>
Co-developed-by: Timur Tabi <[email protected]>
Signed-off-by: Timur Tabi <[email protected]>
Reviewed-by: Dave Airlie <[email protected]>
Reviewed-by: Timur Tabi <[email protected]>
Tested-by: Timur Tabi <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>

Author: Ben Skeggs

drivers/gpu/drm/nouveau/include/nvhw/ref/gh100/dev_falcon_v4.h

@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright (c) 2025, NVIDIA CORPORATION. All rights reserved.
+ */
+#ifndef __gh100_dev_falcon_v4_h__
+#define __gh100_dev_falcon_v4_h__
+
+#define NV_PFALCON_FALCON_MAILBOX0                                                                     0x00000040     /* RW-4R */
+#define NV_PFALCON_FALCON_MAILBOX0_DATA                                                                31:0           /* RWIVF */
+#define NV_PFALCON_FALCON_MAILBOX0_DATA_INIT                                                           0x00000000     /* RWI-V */
+#define NV_PFALCON_FALCON_MAILBOX1                                                                     0x00000044     /* RW-4R */
+#define NV_PFALCON_FALCON_MAILBOX1_DATA                                                                31:0           /* RWIVF */
+#define NV_PFALCON_FALCON_MAILBOX1_DATA_INIT                                                           0x00000000     /* RWI-V */
+
+#define NV_PFALCON_FALCON_HWCFG2                                                                       0x000000f4     /* R--4R */
+#define NV_PFALCON_FALCON_HWCFG2_RISCV_BR_PRIV_LOCKDOWN                                                13:13          /* R--VF */
+#define NV_PFALCON_FALCON_HWCFG2_RISCV_BR_PRIV_LOCKDOWN_LOCK                                           0x00000001     /* R---V */
+#define NV_PFALCON_FALCON_HWCFG2_RISCV_BR_PRIV_LOCKDOWN_UNLOCK                                         0x00000000     /* R---V */
+
+#endif // __gh100_dev_falcon_v4_h__

drivers/gpu/drm/nouveau/include/nvhw/ref/gh100/dev_fb.h

@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright (c) 2025, NVIDIA CORPORATION. All rights reserved.
+ */
+#ifndef __gh100_dev_fb_h_
+#define __gh100_dev_fb_h_
+
+#define NV_PFB_NISO_FLUSH_SYSMEM_ADDR_SHIFT                       8 /*       */
+#define NV_PFB_FBHUB_PCIE_FLUSH_SYSMEM_ADDR_LO           0x00100A34 /* RW-4R */
+#define NV_PFB_FBHUB_PCIE_FLUSH_SYSMEM_ADDR_LO_ADR             31:0 /* RWIVF */
+#define NV_PFB_FBHUB_PCIE_FLUSH_SYSMEM_ADDR_HI           0x00100A38 /* RW-4R */
+#define NV_PFB_FBHUB_PCIE_FLUSH_SYSMEM_ADDR_HI_ADR             31:0 /* RWIVF */
+#define NV_PFB_FBHUB_PCIE_FLUSH_SYSMEM_ADDR_HI_ADR_MASK  0x000FFFFF /* ----V */
+
+#endif // __gh100_dev_fb_h_

drivers/gpu/drm/nouveau/include/nvhw/ref/gh100/dev_fsp_pri.h

@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: MIT
+ *
+ * Copyright (c) 2025, NVIDIA CORPORATION. All rights reserved.
+ */
+#ifndef __gh100_dev_fsp_pri_h__
+#define __gh100_dev_fsp_pri_h__
+
+#define NV_PFSP             0x8F3FFF:0x8F0000 /* RW--D */
+
+#define NV_PFSP_MSGQ_HEAD(i)                                                                             (0x008F2c80+(i)*8) /* RW-4A */
+#define NV_PFSP_MSGQ_HEAD__SIZE_1                                                                        8              /*       */
+#define NV_PFSP_MSGQ_HEAD_VAL                                                                            31:0           /* RWIUF */
+#define NV_PFSP_MSGQ_HEAD_VAL_INIT                                                                       0x00000000     /* RWI-V */
+#define NV_PFSP_MSGQ_TAIL(i)                                                                             (0x008F2c84+(i)*8) /* RW-4A */
+#define NV_PFSP_MSGQ_TAIL__SIZE_1                                                                        8              /*       */
+#define NV_PFSP_MSGQ_TAIL_VAL                                                                            31:0           /* RWIUF */
+#define NV_PFSP_MSGQ_TAIL_VAL_INIT                                                                       0x00000000     /* RWI-V */
+
+#define NV_PFSP_QUEUE_HEAD(i)                                                                            (0x008F2c00+(i)*8) /* RW-4A */
+#define NV_PFSP_QUEUE_HEAD__SIZE_1                                                                       8              /*       */
+#define NV_PFSP_QUEUE_HEAD_ADDRESS                                                                       31:0           /* RWIVF */
+#define NV_PFSP_QUEUE_HEAD_ADDRESS_INIT                                                                  0x00000000     /* RWI-V */
+#define NV_PFSP_QUEUE_TAIL(i)                                                                            (0x008F2c04+(i)*8) /* RW-4A */
+#define NV_PFSP_QUEUE_TAIL__SIZE_1                                                                       8              /*       */
+#define NV_PFSP_QUEUE_TAIL_ADDRESS                                                                       31:0           /* RWIVF */
+#define NV_PFSP_QUEUE_TAIL_ADDRESS_INIT                                                                  0x00000000     /* RWI-V */
+
+#endif // __gh100_dev_fsp_pri_h__