drivers/gpu/drm/nouveau/nvkm/engine/sec2/gp102.c - linux - Git at Google

 /*
  * Copyright (c) 2017, 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 <core/memory.h>
 #include <subdev/acr.h>
 #include <subdev/timer.h>

 #include <nvfw/flcn.h>
 #include <nvfw/sec2.h>

 int
 gp102_sec2_nofw(struct nvkm_sec2 *sec2, int ver,
 		const struct nvkm_sec2_fwif *fwif)
 {
 	nvkm_warn(&sec2->engine.subdev, "firmware unavailable\n");
 	return 0;
 }

 static int
 gp102_sec2_acr_bootstrap_falcon_callback(void *priv, struct nvfw_falcon_msg *hdr)
 {
 	struct nv_sec2_acr_bootstrap_falcon_msg *msg =
 		container_of(hdr, typeof(*msg), msg.hdr);
 	struct nvkm_subdev *subdev = priv;
 	const char *name = nvkm_acr_lsf_id(msg->falcon_id);

 	if (msg->error_code) {
 		nvkm_error(subdev, "ACR_BOOTSTRAP_FALCON failed for "
 				   "falcon %d [%s]: %08x\n",
 			   msg->falcon_id, name, msg->error_code);
 		return -EINVAL;
 	}

 	nvkm_debug(subdev, "%s booted\n", name);
 	return 0;
 }

 static int
 gp102_sec2_acr_bootstrap_falcon(struct nvkm_falcon *falcon,
 			        enum nvkm_acr_lsf_id id)
 {
 	struct nvkm_sec2 *sec2 = container_of(falcon, typeof(*sec2), falcon);
 	struct nv_sec2_acr_bootstrap_falcon_cmd cmd = {
 		.cmd.hdr.unit_id = sec2->func->unit_acr,
 		.cmd.hdr.size = sizeof(cmd),
 		.cmd.cmd_type = NV_SEC2_ACR_CMD_BOOTSTRAP_FALCON,
 		.flags = NV_SEC2_ACR_BOOTSTRAP_FALCON_FLAGS_RESET_YES,
 		.falcon_id = id,
 	};

 	return nvkm_falcon_cmdq_send(sec2->cmdq, &cmd.cmd.hdr,
 				     gp102_sec2_acr_bootstrap_falcon_callback,
 				     &sec2->engine.subdev,
 				     msecs_to_jiffies(1000));
 }

 static int
 gp102_sec2_acr_boot(struct nvkm_falcon *falcon)
 {
 	struct nv_sec2_args args = {};
 	nvkm_falcon_load_dmem(falcon, &args,
 			      falcon->func->emem_addr, sizeof(args), 0);
 	nvkm_falcon_start(falcon);
 	return 0;
 }

 static void
 gp102_sec2_acr_bld_patch(struct nvkm_acr *acr, u32 bld, s64 adjust)
 {
 	struct loader_config_v1 hdr;
 	nvkm_robj(acr->wpr, bld, &hdr, sizeof(hdr));
 	hdr.code_dma_base = hdr.code_dma_base + adjust;
 	hdr.data_dma_base = hdr.data_dma_base + adjust;
 	hdr.overlay_dma_base = hdr.overlay_dma_base + adjust;
 	nvkm_wobj(acr->wpr, bld, &hdr, sizeof(hdr));
 	loader_config_v1_dump(&acr->subdev, &hdr);
 }

 static void
 gp102_sec2_acr_bld_write(struct nvkm_acr *acr, u32 bld,
 			 struct nvkm_acr_lsfw *lsfw)
 {
 	const struct loader_config_v1 hdr = {
 		.dma_idx = FALCON_SEC2_DMAIDX_UCODE,
 		.code_dma_base = lsfw->offset.img + lsfw->app_start_offset,
 		.code_size_total = lsfw->app_size,
 		.code_size_to_load = lsfw->app_resident_code_size,
 		.code_entry_point = lsfw->app_imem_entry,
 		.data_dma_base = lsfw->offset.img + lsfw->app_start_offset +
 				 lsfw->app_resident_data_offset,
 		.data_size = lsfw->app_resident_data_size,
 		.overlay_dma_base = lsfw->offset.img + lsfw->app_start_offset,
 		.argc = 1,
 		.argv = lsfw->falcon->func->emem_addr,
 	};

 	nvkm_wobj(acr->wpr, bld, &hdr, sizeof(hdr));
 }

 static const struct nvkm_acr_lsf_func
 gp102_sec2_acr_0 = {
 	.bld_size = sizeof(struct loader_config_v1),
 	.bld_write = gp102_sec2_acr_bld_write,
 	.bld_patch = gp102_sec2_acr_bld_patch,
 	.boot = gp102_sec2_acr_boot,
 	.bootstrap_falcons = BIT_ULL(NVKM_ACR_LSF_FECS) |
 			     BIT_ULL(NVKM_ACR_LSF_GPCCS) |
 			     BIT_ULL(NVKM_ACR_LSF_SEC2),
 	.bootstrap_falcon = gp102_sec2_acr_bootstrap_falcon,
 };

 int
 gp102_sec2_initmsg(struct nvkm_sec2 *sec2)
 {
 	struct nv_sec2_init_msg msg;
 	int ret, i;

 	ret = nvkm_falcon_msgq_recv_initmsg(sec2->msgq, &msg, sizeof(msg));
 	if (ret)
 		return ret;

 	if (msg.hdr.unit_id != NV_SEC2_UNIT_INIT ||
 	    msg.msg_type != NV_SEC2_INIT_MSG_INIT)
 		return -EINVAL;

 	for (i = 0; i < ARRAY_SIZE(msg.queue_info); i++) {
 		if (msg.queue_info[i].id == NV_SEC2_INIT_MSG_QUEUE_ID_MSGQ) {
 			nvkm_falcon_msgq_init(sec2->msgq,
 					      msg.queue_info[i].index,
 					      msg.queue_info[i].offset,
 					      msg.queue_info[i].size);
 		} else {
 			nvkm_falcon_cmdq_init(sec2->cmdq,
 					      msg.queue_info[i].index,
 					      msg.queue_info[i].offset,
 					      msg.queue_info[i].size);
 		}
 	}

 	return 0;
 }

 void
 gp102_sec2_intr(struct nvkm_sec2 *sec2)
 {
 	struct nvkm_subdev *subdev = &sec2->engine.subdev;
 	struct nvkm_falcon *falcon = &sec2->falcon;
 	u32 disp = nvkm_falcon_rd32(falcon, 0x01c);
 	u32 intr = nvkm_falcon_rd32(falcon, 0x008) & disp & ~(disp >> 16);

 	if (intr & 0x00000040) {
 		schedule_work(&sec2->work);
 		nvkm_falcon_wr32(falcon, 0x004, 0x00000040);
 		intr &= ~0x00000040;
 	}

 	if (intr) {
 		nvkm_error(subdev, "unhandled intr %08x\n", intr);
 		nvkm_falcon_wr32(falcon, 0x004, intr);
 	}
 }

 int
 gp102_sec2_flcn_enable(struct nvkm_falcon *falcon)
 {
 	nvkm_falcon_mask(falcon, 0x3c0, 0x00000001, 0x00000001);
 	udelay(10);
 	nvkm_falcon_mask(falcon, 0x3c0, 0x00000001, 0x00000000);
 	return nvkm_falcon_v1_enable(falcon);
 }

 void
 gp102_sec2_flcn_bind_context(struct nvkm_falcon *falcon,
 			     struct nvkm_memory *ctx)
 {
 	struct nvkm_device *device = falcon->owner->device;

 	nvkm_falcon_v1_bind_context(falcon, ctx);
 	if (!ctx)
 		return;

 	/* Not sure if this is a WAR for a HW issue, or some additional
 	 * programming sequence that's needed to properly complete the
 	 * context switch we trigger above.
 	 *
 	 * Fixes unreliability of booting the SEC2 RTOS on Quadro P620,
 	 * particularly when resuming from suspend.
 	 *
 	 * Also removes the need for an odd workaround where we needed
 	 * to program SEC2's FALCON_CPUCTL_ALIAS_STARTCPU twice before
 	 * the SEC2 RTOS would begin executing.
 	 */
 	nvkm_msec(device, 10,
 		u32 irqstat = nvkm_falcon_rd32(falcon, 0x008);
 		u32 flcn0dc = nvkm_falcon_rd32(falcon, 0x0dc);
 		if ((irqstat & 0x00000008) &&
 		    (flcn0dc & 0x00007000) == 0x00005000)
 			break;
 	);

 	nvkm_falcon_mask(falcon, 0x004, 0x00000008, 0x00000008);
 	nvkm_falcon_mask(falcon, 0x058, 0x00000002, 0x00000002);

 	nvkm_msec(device, 10,
 		u32 flcn0dc = nvkm_falcon_rd32(falcon, 0x0dc);
 		if ((flcn0dc & 0x00007000) == 0x00000000)
 			break;
 	);
 }

 static const struct nvkm_falcon_func
 gp102_sec2_flcn = {
 	.debug = 0x408,
 	.fbif = 0x600,
 	.load_imem = nvkm_falcon_v1_load_imem,
 	.load_dmem = nvkm_falcon_v1_load_dmem,
 	.read_dmem = nvkm_falcon_v1_read_dmem,
 	.emem_addr = 0x01000000,
 	.bind_context = gp102_sec2_flcn_bind_context,
 	.wait_for_halt = nvkm_falcon_v1_wait_for_halt,
 	.clear_interrupt = nvkm_falcon_v1_clear_interrupt,
 	.set_start_addr = nvkm_falcon_v1_set_start_addr,
 	.start = nvkm_falcon_v1_start,
 	.enable = gp102_sec2_flcn_enable,
 	.disable = nvkm_falcon_v1_disable,
 	.cmdq = { 0xa00, 0xa04, 8 },
 	.msgq = { 0xa30, 0xa34, 8 },
 };

 const struct nvkm_sec2_func
 gp102_sec2 = {
 	.flcn = &gp102_sec2_flcn,
 	.unit_acr = NV_SEC2_UNIT_ACR,
 	.intr = gp102_sec2_intr,
 	.initmsg = gp102_sec2_initmsg,
 };

 MODULE_FIRMWARE("nvidia/gp102/sec2/desc.bin");
 MODULE_FIRMWARE("nvidia/gp102/sec2/image.bin");
 MODULE_FIRMWARE("nvidia/gp102/sec2/sig.bin");
 MODULE_FIRMWARE("nvidia/gp104/sec2/desc.bin");
 MODULE_FIRMWARE("nvidia/gp104/sec2/image.bin");
 MODULE_FIRMWARE("nvidia/gp104/sec2/sig.bin");
 MODULE_FIRMWARE("nvidia/gp106/sec2/desc.bin");
 MODULE_FIRMWARE("nvidia/gp106/sec2/image.bin");
 MODULE_FIRMWARE("nvidia/gp106/sec2/sig.bin");
 MODULE_FIRMWARE("nvidia/gp107/sec2/desc.bin");
 MODULE_FIRMWARE("nvidia/gp107/sec2/image.bin");
 MODULE_FIRMWARE("nvidia/gp107/sec2/sig.bin");

 static void
 gp102_sec2_acr_bld_patch_1(struct nvkm_acr *acr, u32 bld, s64 adjust)
 {
 	struct flcn_bl_dmem_desc_v2 hdr;
 	nvkm_robj(acr->wpr, bld, &hdr, sizeof(hdr));
 	hdr.code_dma_base = hdr.code_dma_base + adjust;
 	hdr.data_dma_base = hdr.data_dma_base + adjust;
 	nvkm_wobj(acr->wpr, bld, &hdr, sizeof(hdr));
 	flcn_bl_dmem_desc_v2_dump(&acr->subdev, &hdr);
 }

 static void
 gp102_sec2_acr_bld_write_1(struct nvkm_acr *acr, u32 bld,
 			   struct nvkm_acr_lsfw *lsfw)
 {
 	const struct flcn_bl_dmem_desc_v2 hdr = {
 		.ctx_dma = FALCON_SEC2_DMAIDX_UCODE,
 		.code_dma_base = lsfw->offset.img + lsfw->app_start_offset,
 		.non_sec_code_off = lsfw->app_resident_code_offset,
 		.non_sec_code_size = lsfw->app_resident_code_size,
 		.code_entry_point = lsfw->app_imem_entry,
 		.data_dma_base = lsfw->offset.img + lsfw->app_start_offset +
 				 lsfw->app_resident_data_offset,
 		.data_size = lsfw->app_resident_data_size,
 		.argc = 1,
 		.argv = lsfw->falcon->func->emem_addr,
 	};

 	nvkm_wobj(acr->wpr, bld, &hdr, sizeof(hdr));
 }

 const struct nvkm_acr_lsf_func
 gp102_sec2_acr_1 = {
 	.bld_size = sizeof(struct flcn_bl_dmem_desc_v2),
 	.bld_write = gp102_sec2_acr_bld_write_1,
 	.bld_patch = gp102_sec2_acr_bld_patch_1,
 	.boot = gp102_sec2_acr_boot,
 	.bootstrap_falcons = BIT_ULL(NVKM_ACR_LSF_FECS) |
 			     BIT_ULL(NVKM_ACR_LSF_GPCCS) |
 			     BIT_ULL(NVKM_ACR_LSF_SEC2),
 	.bootstrap_falcon = gp102_sec2_acr_bootstrap_falcon,
 };

 int
 gp102_sec2_load(struct nvkm_sec2 *sec2, int ver,
 		const struct nvkm_sec2_fwif *fwif)
 {
 	return nvkm_acr_lsfw_load_sig_image_desc_v1(&sec2->engine.subdev,
 						    &sec2->falcon,
 						    NVKM_ACR_LSF_SEC2, "sec2/",
 						    ver, fwif->acr);
 }

 MODULE_FIRMWARE("nvidia/gp102/sec2/desc-1.bin");
 MODULE_FIRMWARE("nvidia/gp102/sec2/image-1.bin");
 MODULE_FIRMWARE("nvidia/gp102/sec2/sig-1.bin");
 MODULE_FIRMWARE("nvidia/gp104/sec2/desc-1.bin");
 MODULE_FIRMWARE("nvidia/gp104/sec2/image-1.bin");
 MODULE_FIRMWARE("nvidia/gp104/sec2/sig-1.bin");
 MODULE_FIRMWARE("nvidia/gp106/sec2/desc-1.bin");
 MODULE_FIRMWARE("nvidia/gp106/sec2/image-1.bin");
 MODULE_FIRMWARE("nvidia/gp106/sec2/sig-1.bin");
 MODULE_FIRMWARE("nvidia/gp107/sec2/desc-1.bin");
 MODULE_FIRMWARE("nvidia/gp107/sec2/image-1.bin");
 MODULE_FIRMWARE("nvidia/gp107/sec2/sig-1.bin");

 static const struct nvkm_sec2_fwif
 gp102_sec2_fwif[] = {
 	{  1, gp102_sec2_load, &gp102_sec2, &gp102_sec2_acr_1 },
 	{  0, gp102_sec2_load, &gp102_sec2, &gp102_sec2_acr_0 },
 	{ -1, gp102_sec2_nofw, &gp102_sec2 },
 	{}
 };

 int
 gp102_sec2_new(struct nvkm_device *device, int index, struct nvkm_sec2 **psec2)
 {
 	return nvkm_sec2_new_(gp102_sec2_fwif, device, index, 0, psec2);
 }
	/*
	* Copyright (c) 2017, 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 <core/memory.h>
	#include <subdev/acr.h>
	#include <subdev/timer.h>

	#include <nvfw/flcn.h>
	#include <nvfw/sec2.h>

	int
	gp102_sec2_nofw(struct nvkm_sec2 *sec2, int ver,
	const struct nvkm_sec2_fwif *fwif)
	{
	nvkm_warn(&sec2->engine.subdev, "firmware unavailable\n");
	return 0;
	}

	static int
	gp102_sec2_acr_bootstrap_falcon_callback(void priv, struct nvfw_falcon_msg hdr)
	{
	struct nv_sec2_acr_bootstrap_falcon_msg *msg =
	container_of(hdr, typeof(*msg), msg.hdr);
	struct nvkm_subdev *subdev = priv;
	const char *name = nvkm_acr_lsf_id(msg->falcon_id);

	if (msg->error_code) {
	nvkm_error(subdev, "ACR_BOOTSTRAP_FALCON failed for "
	"falcon %d [%s]: %08x\n",
	msg->falcon_id, name, msg->error_code);
	return -EINVAL;
	}

	nvkm_debug(subdev, "%s booted\n", name);
	return 0;
	}

	static int
	gp102_sec2_acr_bootstrap_falcon(struct nvkm_falcon *falcon,
	enum nvkm_acr_lsf_id id)
	{
	struct nvkm_sec2 sec2 = container_of(falcon, typeof(sec2), falcon);
	struct nv_sec2_acr_bootstrap_falcon_cmd cmd = {
	.cmd.hdr.unit_id = sec2->func->unit_acr,
	.cmd.hdr.size = sizeof(cmd),
	.cmd.cmd_type = NV_SEC2_ACR_CMD_BOOTSTRAP_FALCON,
	.flags = NV_SEC2_ACR_BOOTSTRAP_FALCON_FLAGS_RESET_YES,
	.falcon_id = id,
	};

	return nvkm_falcon_cmdq_send(sec2->cmdq, &cmd.cmd.hdr,
	gp102_sec2_acr_bootstrap_falcon_callback,
	&sec2->engine.subdev,
	msecs_to_jiffies(1000));
	}

	static int
	gp102_sec2_acr_boot(struct nvkm_falcon *falcon)
	{
	struct nv_sec2_args args = {};
	nvkm_falcon_load_dmem(falcon, &args,
	falcon->func->emem_addr, sizeof(args), 0);
	nvkm_falcon_start(falcon);
	return 0;
	}

	static void
	gp102_sec2_acr_bld_patch(struct nvkm_acr *acr, u32 bld, s64 adjust)
	{
	struct loader_config_v1 hdr;
	nvkm_robj(acr->wpr, bld, &hdr, sizeof(hdr));
	hdr.code_dma_base = hdr.code_dma_base + adjust;
	hdr.data_dma_base = hdr.data_dma_base + adjust;
	hdr.overlay_dma_base = hdr.overlay_dma_base + adjust;
	nvkm_wobj(acr->wpr, bld, &hdr, sizeof(hdr));
	loader_config_v1_dump(&acr->subdev, &hdr);
	}

	static void
	gp102_sec2_acr_bld_write(struct nvkm_acr *acr, u32 bld,
	struct nvkm_acr_lsfw *lsfw)
	{
	const struct loader_config_v1 hdr = {
	.dma_idx = FALCON_SEC2_DMAIDX_UCODE,
	.code_dma_base = lsfw->offset.img + lsfw->app_start_offset,
	.code_size_total = lsfw->app_size,
	.code_size_to_load = lsfw->app_resident_code_size,
	.code_entry_point = lsfw->app_imem_entry,
	.data_dma_base = lsfw->offset.img + lsfw->app_start_offset +
	lsfw->app_resident_data_offset,
	.data_size = lsfw->app_resident_data_size,
	.overlay_dma_base = lsfw->offset.img + lsfw->app_start_offset,
	.argc = 1,
	.argv = lsfw->falcon->func->emem_addr,
	};

	nvkm_wobj(acr->wpr, bld, &hdr, sizeof(hdr));
	}

	static const struct nvkm_acr_lsf_func
	gp102_sec2_acr_0 = {
	.bld_size = sizeof(struct loader_config_v1),
	.bld_write = gp102_sec2_acr_bld_write,
	.bld_patch = gp102_sec2_acr_bld_patch,
	.boot = gp102_sec2_acr_boot,
	.bootstrap_falcons = BIT_ULL(NVKM_ACR_LSF_FECS) \|
	BIT_ULL(NVKM_ACR_LSF_GPCCS) \|
	BIT_ULL(NVKM_ACR_LSF_SEC2),
	.bootstrap_falcon = gp102_sec2_acr_bootstrap_falcon,
	};

	int
	gp102_sec2_initmsg(struct nvkm_sec2 *sec2)
	{
	struct nv_sec2_init_msg msg;
	int ret, i;

	ret = nvkm_falcon_msgq_recv_initmsg(sec2->msgq, &msg, sizeof(msg));
	if (ret)
	return ret;

	if (msg.hdr.unit_id != NV_SEC2_UNIT_INIT \|\|
	msg.msg_type != NV_SEC2_INIT_MSG_INIT)
	return -EINVAL;

	for (i = 0; i < ARRAY_SIZE(msg.queue_info); i++) {
	if (msg.queue_info[i].id == NV_SEC2_INIT_MSG_QUEUE_ID_MSGQ) {
	nvkm_falcon_msgq_init(sec2->msgq,
	msg.queue_info[i].index,
	msg.queue_info[i].offset,
	msg.queue_info[i].size);
	} else {
	nvkm_falcon_cmdq_init(sec2->cmdq,
	msg.queue_info[i].index,
	msg.queue_info[i].offset,
	msg.queue_info[i].size);
	}
	}

	return 0;
	}

	void
	gp102_sec2_intr(struct nvkm_sec2 *sec2)
	{
	struct nvkm_subdev *subdev = &sec2->engine.subdev;
	struct nvkm_falcon *falcon = &sec2->falcon;
	u32 disp = nvkm_falcon_rd32(falcon, 0x01c);
	u32 intr = nvkm_falcon_rd32(falcon, 0x008) & disp & ~(disp >> 16);

	if (intr & 0x00000040) {
	schedule_work(&sec2->work);
	nvkm_falcon_wr32(falcon, 0x004, 0x00000040);
	intr &= ~0x00000040;
	}

	if (intr) {
	nvkm_error(subdev, "unhandled intr %08x\n", intr);
	nvkm_falcon_wr32(falcon, 0x004, intr);
	}
	}

	int
	gp102_sec2_flcn_enable(struct nvkm_falcon *falcon)
	{
	nvkm_falcon_mask(falcon, 0x3c0, 0x00000001, 0x00000001);
	udelay(10);
	nvkm_falcon_mask(falcon, 0x3c0, 0x00000001, 0x00000000);
	return nvkm_falcon_v1_enable(falcon);
	}

	void
	gp102_sec2_flcn_bind_context(struct nvkm_falcon *falcon,
	struct nvkm_memory *ctx)
	{
	struct nvkm_device *device = falcon->owner->device;

	nvkm_falcon_v1_bind_context(falcon, ctx);
	if (!ctx)
	return;

	/* Not sure if this is a WAR for a HW issue, or some additional
	* programming sequence that's needed to properly complete the
	* context switch we trigger above.
	*
	* Fixes unreliability of booting the SEC2 RTOS on Quadro P620,
	* particularly when resuming from suspend.
	*
	* Also removes the need for an odd workaround where we needed
	* to program SEC2's FALCON_CPUCTL_ALIAS_STARTCPU twice before
	* the SEC2 RTOS would begin executing.
	*/
	nvkm_msec(device, 10,
	u32 irqstat = nvkm_falcon_rd32(falcon, 0x008);
	u32 flcn0dc = nvkm_falcon_rd32(falcon, 0x0dc);
	if ((irqstat & 0x00000008) &&
	(flcn0dc & 0x00007000) == 0x00005000)
	break;
	);

	nvkm_falcon_mask(falcon, 0x004, 0x00000008, 0x00000008);
	nvkm_falcon_mask(falcon, 0x058, 0x00000002, 0x00000002);

	nvkm_msec(device, 10,
	u32 flcn0dc = nvkm_falcon_rd32(falcon, 0x0dc);
	if ((flcn0dc & 0x00007000) == 0x00000000)
	break;
	);
	}

	static const struct nvkm_falcon_func
	gp102_sec2_flcn = {
	.debug = 0x408,
	.fbif = 0x600,
	.load_imem = nvkm_falcon_v1_load_imem,
	.load_dmem = nvkm_falcon_v1_load_dmem,
	.read_dmem = nvkm_falcon_v1_read_dmem,
	.emem_addr = 0x01000000,
	.bind_context = gp102_sec2_flcn_bind_context,
	.wait_for_halt = nvkm_falcon_v1_wait_for_halt,
	.clear_interrupt = nvkm_falcon_v1_clear_interrupt,
	.set_start_addr = nvkm_falcon_v1_set_start_addr,
	.start = nvkm_falcon_v1_start,
	.enable = gp102_sec2_flcn_enable,
	.disable = nvkm_falcon_v1_disable,
	.cmdq = { 0xa00, 0xa04, 8 },
	.msgq = { 0xa30, 0xa34, 8 },
	};

	const struct nvkm_sec2_func
	gp102_sec2 = {
	.flcn = &gp102_sec2_flcn,
	.unit_acr = NV_SEC2_UNIT_ACR,
	.intr = gp102_sec2_intr,
	.initmsg = gp102_sec2_initmsg,
	};

	MODULE_FIRMWARE("nvidia/gp102/sec2/desc.bin");
	MODULE_FIRMWARE("nvidia/gp102/sec2/image.bin");
	MODULE_FIRMWARE("nvidia/gp102/sec2/sig.bin");
	MODULE_FIRMWARE("nvidia/gp104/sec2/desc.bin");
	MODULE_FIRMWARE("nvidia/gp104/sec2/image.bin");
	MODULE_FIRMWARE("nvidia/gp104/sec2/sig.bin");
	MODULE_FIRMWARE("nvidia/gp106/sec2/desc.bin");
	MODULE_FIRMWARE("nvidia/gp106/sec2/image.bin");
	MODULE_FIRMWARE("nvidia/gp106/sec2/sig.bin");
	MODULE_FIRMWARE("nvidia/gp107/sec2/desc.bin");
	MODULE_FIRMWARE("nvidia/gp107/sec2/image.bin");
	MODULE_FIRMWARE("nvidia/gp107/sec2/sig.bin");

	static void
	gp102_sec2_acr_bld_patch_1(struct nvkm_acr *acr, u32 bld, s64 adjust)
	{
	struct flcn_bl_dmem_desc_v2 hdr;
	nvkm_robj(acr->wpr, bld, &hdr, sizeof(hdr));
	hdr.code_dma_base = hdr.code_dma_base + adjust;
	hdr.data_dma_base = hdr.data_dma_base + adjust;
	nvkm_wobj(acr->wpr, bld, &hdr, sizeof(hdr));
	flcn_bl_dmem_desc_v2_dump(&acr->subdev, &hdr);
	}

	static void
	gp102_sec2_acr_bld_write_1(struct nvkm_acr *acr, u32 bld,
	struct nvkm_acr_lsfw *lsfw)
	{
	const struct flcn_bl_dmem_desc_v2 hdr = {
	.ctx_dma = FALCON_SEC2_DMAIDX_UCODE,
	.code_dma_base = lsfw->offset.img + lsfw->app_start_offset,
	.non_sec_code_off = lsfw->app_resident_code_offset,
	.non_sec_code_size = lsfw->app_resident_code_size,
	.code_entry_point = lsfw->app_imem_entry,
	.data_dma_base = lsfw->offset.img + lsfw->app_start_offset +
	lsfw->app_resident_data_offset,
	.data_size = lsfw->app_resident_data_size,
	.argc = 1,
	.argv = lsfw->falcon->func->emem_addr,
	};

	nvkm_wobj(acr->wpr, bld, &hdr, sizeof(hdr));
	}

	const struct nvkm_acr_lsf_func
	gp102_sec2_acr_1 = {
	.bld_size = sizeof(struct flcn_bl_dmem_desc_v2),
	.bld_write = gp102_sec2_acr_bld_write_1,
	.bld_patch = gp102_sec2_acr_bld_patch_1,
	.boot = gp102_sec2_acr_boot,
	.bootstrap_falcons = BIT_ULL(NVKM_ACR_LSF_FECS) \|
	BIT_ULL(NVKM_ACR_LSF_GPCCS) \|
	BIT_ULL(NVKM_ACR_LSF_SEC2),
	.bootstrap_falcon = gp102_sec2_acr_bootstrap_falcon,
	};

	int
	gp102_sec2_load(struct nvkm_sec2 *sec2, int ver,
	const struct nvkm_sec2_fwif *fwif)
	{
	return nvkm_acr_lsfw_load_sig_image_desc_v1(&sec2->engine.subdev,
	&sec2->falcon,
	NVKM_ACR_LSF_SEC2, "sec2/",
	ver, fwif->acr);
	}

	MODULE_FIRMWARE("nvidia/gp102/sec2/desc-1.bin");
	MODULE_FIRMWARE("nvidia/gp102/sec2/image-1.bin");
	MODULE_FIRMWARE("nvidia/gp102/sec2/sig-1.bin");
	MODULE_FIRMWARE("nvidia/gp104/sec2/desc-1.bin");
	MODULE_FIRMWARE("nvidia/gp104/sec2/image-1.bin");
	MODULE_FIRMWARE("nvidia/gp104/sec2/sig-1.bin");
	MODULE_FIRMWARE("nvidia/gp106/sec2/desc-1.bin");
	MODULE_FIRMWARE("nvidia/gp106/sec2/image-1.bin");
	MODULE_FIRMWARE("nvidia/gp106/sec2/sig-1.bin");
	MODULE_FIRMWARE("nvidia/gp107/sec2/desc-1.bin");
	MODULE_FIRMWARE("nvidia/gp107/sec2/image-1.bin");
	MODULE_FIRMWARE("nvidia/gp107/sec2/sig-1.bin");

	static const struct nvkm_sec2_fwif
	gp102_sec2_fwif[] = {
	{ 1, gp102_sec2_load, &gp102_sec2, &gp102_sec2_acr_1 },
	{ 0, gp102_sec2_load, &gp102_sec2, &gp102_sec2_acr_0 },
	{ -1, gp102_sec2_nofw, &gp102_sec2 },
	{}
	};

	int
	gp102_sec2_new(struct nvkm_device device, int index, struct nvkm_sec2 *psec2)
	{
	return nvkm_sec2_new_(gp102_sec2_fwif, device, index, 0, psec2);
	}