Message-ID: <1432214425-27137-4-git-send-email-amerilainen@nvidia.com>
Date:	Thu, 21 May 2015 16:20:24 +0300
From:	Arto Merilainen <amerilainen@...dia.com>
To:	thierry.reding@...il.com
CC:	linux-tegra@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org, achew@...dia.com, srasal@...dia.com,
	dnibade@...dia.com
Subject: [PATCH 3/4] drm/tegra: Add VIC support

This patch adds support for Video Image Compositor engine which
can be used for 2d operations.

The engine has a microcontroller (Falcon) that acts as a frontend
for the rest of the unit. In order to properly utilize the engine,
the frontend must be booted before pushing any commands.

Signed-off-by: Andrew Chew <achew@...dia.com>
Signed-off-by: Arto Merilainen <amerilainen@...dia.com>
---
 drivers/gpu/drm/tegra/Makefile |   3 +-
 drivers/gpu/drm/tegra/drm.c    |   9 +-
 drivers/gpu/drm/tegra/drm.h    |   1 +
 drivers/gpu/drm/tegra/vic.c    | 593 +++++++++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/tegra/vic.h    | 116 ++++++++
 include/linux/host1x.h         |   1 +
 6 files changed, 721 insertions(+), 2 deletions(-)
 create mode 100644 drivers/gpu/drm/tegra/vic.c
 create mode 100644 drivers/gpu/drm/tegra/vic.h

diff --git a/drivers/gpu/drm/tegra/Makefile b/drivers/gpu/drm/tegra/Makefile
index 2c66a8db9da4..3bc3566e00b6 100644
--- a/drivers/gpu/drm/tegra/Makefile
+++ b/drivers/gpu/drm/tegra/Makefile
@@ -13,6 +13,7 @@ tegra-drm-y := \
 	sor.o \
 	dpaux.o \
 	gr2d.o \
-	gr3d.o
+	gr3d.o \
+	vic.o
 
 obj-$(CONFIG_DRM_TEGRA) += tegra-drm.o
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index bfad15a913a0..d947f5f4d801 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2012 Avionic Design GmbH
- * Copyright (C) 2012-2013 NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (C) 2012-2015 NVIDIA CORPORATION.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -1048,6 +1048,7 @@ static const struct of_device_id host1x_drm_subdevs[] = {
 	{ .compatible = "nvidia,tegra124-dc", },
 	{ .compatible = "nvidia,tegra124-sor", },
 	{ .compatible = "nvidia,tegra124-hdmi", },
+	{ .compatible = "nvidia,tegra124-vic", },
 	{ /* sentinel */ }
 };
 
@@ -1097,8 +1098,14 @@ static int __init host1x_drm_init(void)
 	if (err < 0)
 		goto unregister_gr2d;
 
+	err = platform_driver_register(&tegra_vic_driver);
+	if (err < 0)
+		goto unregister_gr3d;
+
 	return 0;
 
+unregister_gr3d:
+	platform_driver_unregister(&tegra_gr3d_driver);
 unregister_gr2d:
 	platform_driver_unregister(&tegra_gr2d_driver);
 unregister_dpaux:
diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h
index 0e7756e720c5..a9c02a80d6bf 100644
--- a/drivers/gpu/drm/tegra/drm.h
+++ b/drivers/gpu/drm/tegra/drm.h
@@ -275,5 +275,6 @@ extern struct platform_driver tegra_hdmi_driver;
 extern struct platform_driver tegra_dpaux_driver;
 extern struct platform_driver tegra_gr2d_driver;
 extern struct platform_driver tegra_gr3d_driver;
+extern struct platform_driver tegra_vic_driver;
 
 #endif /* HOST1X_DRM_H */
diff --git a/drivers/gpu/drm/tegra/vic.c b/drivers/gpu/drm/tegra/vic.c
new file mode 100644
index 000000000000..b7c5a96697ed
--- /dev/null
+++ b/drivers/gpu/drm/tegra/vic.c
@@ -0,0 +1,593 @@
+/*
+ * Copyright (c) 2015, NVIDIA Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_platform.h>
+#include <linux/clk.h>
+#include <linux/host1x.h>
+#include <linux/module.h>
+#include <linux/firmware.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+#include <soc/tegra/pmc.h>
+#include <linux/iommu.h>
+
+#include "drm.h"
+#include "gem.h"
+#include "vic.h"
+
+#define VIC_IDLE_TIMEOUT_DEFAULT	10000	/* 10 milliseconds */
+#define VIC_IDLE_CHECK_PERIOD		10	/* 10 usec */
+
+struct vic;
+
+struct vic_config {
+	/* firmware name */
+	char *ucode_name;
+
+	/* class id */
+	u32 class_id;
+
+	/* powergate id */
+	int powergate_id;
+};
+
+struct vic {
+	struct {
+		u32 bin_data_offset;
+		u32 data_offset;
+		u32 data_size;
+		u32 code_offset;
+		u32 size;
+	} os, fce;
+
+	struct tegra_bo *ucode_bo;
+	bool ucode_valid;
+	void *ucode_vaddr;
+
+	bool booted;
+
+	void __iomem *regs;
+	struct tegra_drm_client client;
+	struct host1x_channel *channel;
+	struct iommu_domain *domain;
+	struct device *dev;
+	struct clk *clk;
+	struct reset_control *rst;
+
+	/* Platform configuration */
+	struct vic_config *config;
+
+	/* for firewall - this determines if method 1 should be regarded
+	 * as an address register */
+	bool method_data_is_addr_reg;
+};
+
+static inline struct vic *to_vic(struct tegra_drm_client *client)
+{
+	return container_of(client, struct vic, client);
+}
+
+void vic_writel(struct vic *vic, u32 v, u32 r)
+{
+	writel(v, vic->regs + r);
+}
+
+u32 vic_readl(struct vic *vic, u32 r)
+{
+	return readl(vic->regs + r);
+}
+
+static int vic_wait_idle(struct vic *vic)
+{
+	u32 timeout = VIC_IDLE_TIMEOUT_DEFAULT;
+
+	do {
+		u32 check = min_t(u32, VIC_IDLE_CHECK_PERIOD, timeout);
+		u32 w = vic_readl(vic, NV_PVIC_FALCON_IDLESTATE);
+
+		if (!w)
+			return 0;
+
+		udelay(VIC_IDLE_CHECK_PERIOD);
+		timeout -= check;
+	} while (timeout);
+
+	dev_err(vic->dev, "vic idle timeout");
+
+	return -ETIMEDOUT;
+}
+
+static int vic_dma_wait_idle(struct vic *vic)
+{
+	u32 timeout = VIC_IDLE_TIMEOUT_DEFAULT;
+
+	do {
+		u32 check = min_t(u32, VIC_IDLE_CHECK_PERIOD, timeout);
+		u32 dmatrfcmd = vic_readl(vic, NV_PVIC_FALCON_DMATRFCMD);
+
+		if (dmatrfcmd & DMATRFCMD_IDLE)
+			return 0;
+
+		udelay(VIC_IDLE_CHECK_PERIOD);
+		timeout -= check;
+	} while (timeout);
+
+	dev_err(vic->dev, "dma idle timeout");
+
+	return -ETIMEDOUT;
+}
+
+static int vic_dma_pa_to_internal_256b(struct vic *vic, phys_addr_t pa,
+				       u32 internal_offset, bool imem)
+{
+	u32 cmd = DMATRFCMD_SIZE_256B;
+
+	if (imem)
+		cmd |= DMATRFCMD_IMEM;
+
+	vic_writel(vic, DMATRFMOFFS_OFFS(internal_offset),
+		   NV_PVIC_FALCON_DMATRFMOFFS);
+	vic_writel(vic, DMATRFFBOFFS_OFFS(pa),
+		   NV_PVIC_FALCON_DMATRFFBOFFS);
+	vic_writel(vic, cmd, NV_PVIC_FALCON_DMATRFCMD);
+
+	return vic_dma_wait_idle(vic);
+}
+
+static int vic_setup_ucode_image(struct vic *vic,
+				 const struct firmware *ucode_fw)
+{
+	/* image data is little endian. */
+	u32 *ucode_vaddr = vic->ucode_vaddr;
+	struct ucode_v1_vic ucode;
+	int w;
+
+	/* copy the whole thing taking into account endianness */
+	for (w = 0; w < ucode_fw->size / sizeof(u32); w++)
+		ucode_vaddr[w] = le32_to_cpu(((u32 *)ucode_fw->data)[w]);
+
+	ucode.bin_header = (struct ucode_bin_header_v1_vic *)ucode_vaddr;
+
+	/* endian problems would show up right here */
+	if (ucode.bin_header->bin_magic != 0x10de) {
+		dev_err(vic->dev, "failed to get firmware magic");
+		return -EINVAL;
+	}
+
+	if (ucode.bin_header->bin_ver != 1) {
+		dev_err(vic->dev, "unsupported firmware version");
+		return -ENOENT;
+	}
+
+	/* shouldn't be bigger than what firmware thinks */
+	if (ucode.bin_header->bin_size > ucode_fw->size) {
+		dev_err(vic->dev, "ucode image size inconsistency");
+		return -EINVAL;
+	}
+
+	ucode.os_header = (struct ucode_os_header_v1_vic *)
+		(((void *)ucode_vaddr) +
+		ucode.bin_header->os_bin_header_offset);
+	vic->os.size = ucode.bin_header->os_bin_size;
+	vic->os.bin_data_offset = ucode.bin_header->os_bin_data_offset;
+	vic->os.code_offset = ucode.os_header->os_code_offset;
+	vic->os.data_offset = ucode.os_header->os_data_offset;
+	vic->os.data_size = ucode.os_header->os_data_size;
+
+	ucode.fce_header = (struct ucode_fce_header_v1_vic *)
+		(((void *)ucode_vaddr) +
+		ucode.bin_header->fce_bin_header_offset);
+	vic->fce.size = ucode.fce_header->fce_ucode_size;
+	vic->fce.data_offset = ucode.bin_header->fce_bin_data_offset;
+
+	return 0;
+}
+
+static int vic_read_ucode(struct vic *vic)
+{
+	struct host1x_client *client = &vic->client.base;
+	struct drm_device *dev = dev_get_drvdata(client->parent);
+	const struct firmware *ucode_fw;
+	int err;
+
+	err = request_firmware(&ucode_fw, vic->config->ucode_name, vic->dev);
+	if (err) {
+		dev_err(vic->dev, "failed to get firmware\n");
+		goto err_request_firmware;
+	}
+
+	vic->ucode_bo = tegra_bo_create(dev, ucode_fw->size, 0);
+	if (IS_ERR(vic->ucode_bo)) {
+		dev_err(vic->dev, "dma memory allocation failed");
+		err = PTR_ERR(vic->ucode_bo);
+		goto err_alloc_iova;
+	}
+
+	/* get vaddr for the ucode */
+	if (!vic->ucode_bo->vaddr)
+		vic->ucode_vaddr = vmap(vic->ucode_bo->pages,
+					vic->ucode_bo->num_pages, VM_MAP,
+					pgprot_writecombine(PAGE_KERNEL));
+	else
+		vic->ucode_vaddr = vic->ucode_bo->vaddr;
+
+	err = vic_setup_ucode_image(vic, ucode_fw);
+	if (err) {
+		dev_err(vic->dev, "failed to parse firmware image\n");
+		goto err_setup_ucode_image;
+	}
+
+	vic->ucode_valid = true;
+
+	release_firmware(ucode_fw);
+
+	return 0;
+
+err_setup_ucode_image:
+	drm_gem_object_release(&vic->ucode_bo->gem);
+err_alloc_iova:
+	release_firmware(ucode_fw);
+err_request_firmware:
+	return err;
+}
+
+static int vic_boot(struct device *dev)
+{
+	struct vic *vic = dev_get_drvdata(dev);
+	u32 offset;
+	int err = 0;
+
+	if (vic->booted)
+		return 0;
+
+	if (!vic->ucode_valid) {
+		err = vic_read_ucode(vic);
+		if (err)
+			return err;
+	}
+
+	/* ensure that the engine is in sane state */
+	reset_control_assert(vic->rst);
+	udelay(10);
+	reset_control_deassert(vic->rst);
+
+	/* setup clockgating registers */
+	vic_writel(vic, CG_IDLE_CG_DLY_CNT(4) |
+			CG_IDLE_CG_EN |
+			CG_WAKEUP_DLY_CNT(4),
+		   NV_PVIC_MISC_PRI_VIC_CG);
+
+	/* service all dma requests */
+	vic_writel(vic, 0, NV_PVIC_FALCON_DMACTL);
+
+	/* setup dma base address */
+	vic_writel(vic, (vic->ucode_bo->paddr + vic->os.bin_data_offset) >> 8,
+		   NV_PVIC_FALCON_DMATRFBASE);
+
+	/* dma ucode data */
+	for (offset = 0; offset < vic->os.data_size; offset += 256)
+		vic_dma_pa_to_internal_256b(vic,
+					     vic->os.data_offset + offset,
+					     offset, false);
+
+	/* dma ucode */
+	vic_dma_pa_to_internal_256b(vic, vic->os.code_offset, 0, true);
+
+	/* setup falcon interrupts and enable interface */
+	vic_writel(vic, IRQMSET_EXT(0xff) |
+			IRQMSET_SWGEN1_SET |
+			IRQMSET_SWGEN0_SET |
+			IRQMSET_EXTERR_SET |
+			IRQMSET_HALT_SET |
+			IRQMSET_WDTMR_SET,
+		   NV_PVIC_FALCON_IRQMSET);
+	vic_writel(vic, IRQDEST_HOST_EXT(0Xff) |
+			IRQDEST_HOST_SWGEN1_HOST |
+			IRQDEST_HOST_SWGEN0_HOST |
+			IRQDEST_HOST_EXTERR_HOST |
+			IRQDEST_HOST_HALT_HOST,
+		    NV_PVIC_FALCON_IRQDEST);
+
+	/* enable method and context switch interfaces */
+	vic_writel(vic, ITFEN_MTHDEN_ENABLE |
+			ITFEN_CTXEN_ENABLE,
+		   NV_PVIC_FALCON_ITFEN);
+
+	/* boot falcon */
+	vic_writel(vic, BOOTVEC_VEC(0), NV_PVIC_FALCON_BOOTVEC);
+	vic_writel(vic, CPUCTL_STARTCPU, NV_PVIC_FALCON_CPUCTL);
+
+	err = vic_wait_idle(vic);
+	if (err != 0) {
+		dev_err(dev, "boot failed due to timeout");
+		return err;
+	}
+
+	/* Set application id and set-up FCE ucode address */
+	vic_writel(vic, NVA0B6_VIDEO_COMPOSITOR_SET_APPLICATION_ID >> 2,
+		    NV_PVIC_FALCON_METHOD_0);
+	vic_writel(vic, 1, NV_PVIC_FALCON_METHOD_1);
+	vic_writel(vic, NVA0B6_VIDEO_COMPOSITOR_SET_FCE_UCODE_SIZE >> 2,
+		    NV_PVIC_FALCON_METHOD_0);
+	vic_writel(vic, vic->fce.size, NV_PVIC_FALCON_METHOD_1);
+	vic_writel(vic, NVA0B6_VIDEO_COMPOSITOR_SET_FCE_UCODE_OFFSET >> 2,
+		    NV_PVIC_FALCON_METHOD_0);
+	vic_writel(vic, (vic->ucode_bo->paddr + vic->fce.data_offset) >> 8,
+		    NV_PVIC_FALCON_METHOD_1);
+
+	err = vic_wait_idle(vic);
+	if (err != 0) {
+		dev_err(dev, "failed to set application id and fce base");
+		return err;
+	}
+
+	vic->booted = true;
+
+	dev_info(dev, "booted");
+
+	return 0;
+}
+
+static int vic_init(struct host1x_client *client)
+{
+	struct tegra_drm_client *drm = host1x_to_drm_client(client);
+	struct drm_device *dev = dev_get_drvdata(client->parent);
+	struct tegra_drm *tegra = dev->dev_private;
+	struct vic *vic = to_vic(drm);
+	int err;
+
+	if (tegra->domain) {
+		err = iommu_attach_device(tegra->domain, vic->dev);
+		if (err < 0) {
+			dev_err(vic->dev, "failed to attach to domain: %d\n",
+				err);
+			return err;
+		}
+
+		vic->domain = tegra->domain;
+	}
+
+	vic->channel = host1x_channel_request(client->dev);
+	if (!vic->channel)
+		return -ENOMEM;
+
+	client->syncpts[0] = host1x_syncpt_request(client->dev, 0);
+	if (!client->syncpts[0]) {
+		host1x_channel_free(vic->channel);
+		return -ENOMEM;
+	}
+
+	return tegra_drm_register_client(tegra, drm);
+}
+
+static int vic_exit(struct host1x_client *client)
+{
+	struct tegra_drm_client *drm = host1x_to_drm_client(client);
+	struct drm_device *dev = dev_get_drvdata(client->parent);
+	struct tegra_drm *tegra = dev->dev_private;
+	struct vic *vic = to_vic(drm);
+	int err;
+
+	err = tegra_drm_unregister_client(tegra, drm);
+	if (err < 0)
+		return err;
+
+	host1x_syncpt_free(client->syncpts[0]);
+	host1x_channel_free(vic->channel);
+
+	/* ucode is no longer available. release it */
+	if (vic->ucode_valid) {
+		/* first, ensure that vic is not using it */
+		reset_control_assert(vic->rst);
+		udelay(10);
+		reset_control_deassert(vic->rst);
+
+		/* ..then release the ucode */
+		if (!vic->ucode_bo->vaddr)
+			vunmap(vic->ucode_vaddr);
+		drm_gem_object_release(&vic->ucode_bo->gem);
+		vic->ucode_valid = false;
+	}
+
+	if (vic->domain) {
+		iommu_detach_device(vic->domain, vic->dev);
+		vic->domain = NULL;
+	}
+
+	return 0;
+}
+
+static const struct host1x_client_ops vic_client_ops = {
+	.init = vic_init,
+	.exit = vic_exit,
+};
+
+static int vic_open_channel(struct tegra_drm_client *client,
+			     struct tegra_drm_context *context)
+{
+	struct vic *vic = to_vic(client);
+	int err;
+
+	err = vic_boot(vic->dev);
+	if (err)
+		return err;
+
+	context->channel = host1x_channel_get(vic->channel);
+	if (!context->channel)
+		return -ENOMEM;
+
+	return 0;
+}
+
+static void vic_close_channel(struct tegra_drm_context *context)
+{
+	host1x_channel_put(context->channel);
+}
+
+static int vic_is_addr_reg(struct device *dev, u32 class, u32 offset, u32 val)
+{
+	struct vic *vic = dev_get_drvdata(dev);
+
+	/* handle host class */
+	if (class == HOST1X_CLASS_HOST1X) {
+		if (offset == 0x2b)
+			return true;
+		return false;
+	}
+
+	/* write targets towards method 1. check stashed value */
+	if (offset == NV_PVIC_FALCON_METHOD_1 >> 2)
+		return vic->method_data_is_addr_reg;
+
+	/* write targets to method 0. determine if the method takes an
+	 * address as a parameter */
+	if (offset == NV_PVIC_FALCON_METHOD_0 >> 2) {
+		u32 method = val << 2;
+
+		if ((method >= 0x400 && method <= 0x5dc) ||
+		    (method >= 0x720 && method <= 0x738))
+			vic->method_data_is_addr_reg = true;
+		else
+			vic->method_data_is_addr_reg = false;
+	}
+
+	/* default to false */
+	return false;
+}
+
+static const struct tegra_drm_client_ops vic_ops = {
+	.open_channel = vic_open_channel,
+	.close_channel = vic_close_channel,
+	.is_addr_reg = vic_is_addr_reg,
+	.submit = tegra_drm_submit,
+};
+
+static const struct vic_config vic_t124_config = {
+	.ucode_name = "vic03_ucode.bin",
+	.class_id = HOST1X_CLASS_VIC,
+	.powergate_id = TEGRA_POWERGATE_VIC,
+};
+
+static const struct of_device_id vic_match[] = {
+	{ .compatible = "nvidia,tegra124-vic",
+		.data = &vic_t124_config },
+	{ },
+};
+
+static int vic_probe(struct platform_device *pdev)
+{
+	struct vic_config *vic_config = NULL;
+	struct device *dev = &pdev->dev;
+	struct host1x_syncpt **syncpts;
+	struct resource *regs;
+	struct vic *vic;
+	int err;
+
+	if (dev->of_node) {
+		const struct of_device_id *match;
+
+		match = of_match_device(vic_match, dev);
+		if (match)
+			vic_config = (struct vic_config *)match->data;
+		else
+			return -ENXIO;
+	}
+
+	vic = devm_kzalloc(dev, sizeof(*vic), GFP_KERNEL);
+	if (!vic)
+		return -ENOMEM;
+
+	syncpts = devm_kzalloc(dev, sizeof(*syncpts), GFP_KERNEL);
+	if (!syncpts)
+		return -ENOMEM;
+
+	regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!regs) {
+		dev_err(&pdev->dev, "failed to get registers\n");
+		return -ENXIO;
+	}
+
+	vic->regs = devm_ioremap_resource(dev, regs);
+	if (IS_ERR(vic->regs))
+		return PTR_ERR(vic->regs);
+
+	vic->clk = devm_clk_get(dev, NULL);
+	if (IS_ERR(vic->clk)) {
+		dev_err(&pdev->dev, "failed to get clock\n");
+		return PTR_ERR(vic->clk);
+	}
+
+	vic->rst = devm_reset_control_get(dev, "vic03");
+	if (IS_ERR(vic->rst)) {
+		dev_err(&pdev->dev, "cannot get reset\n");
+		return PTR_ERR(vic->rst);
+	}
+
+	platform_set_drvdata(pdev, vic);
+
+	INIT_LIST_HEAD(&vic->client.base.list);
+	vic->client.base.ops = &vic_client_ops;
+	vic->client.base.dev = dev;
+	vic->client.base.class = vic_config->class_id;
+	vic->client.base.syncpts = syncpts;
+	vic->client.base.num_syncpts = 1;
+	vic->dev = dev;
+	vic->config = vic_config;
+
+	INIT_LIST_HEAD(&vic->client.list);
+	vic->client.ops = &vic_ops;
+
+	err = tegra_powergate_sequence_power_up(vic->config->powergate_id,
+						vic->clk, vic->rst);
+	if (err) {
+		dev_err(dev, "cannot turn on the device\n");
+		return err;
+	}
+
+	err = host1x_client_register(&vic->client.base);
+	if (err < 0) {
+		dev_err(dev, "failed to register host1x client: %d\n", err);
+		clk_disable_unprepare(vic->clk);
+		tegra_powergate_power_off(vic->config->powergate_id);
+		platform_set_drvdata(pdev, NULL);
+		return err;
+	}
+
+	dev_info(&pdev->dev, "initialized");
+
+	return 0;
+}
+
+static int vic_remove(struct platform_device *pdev)
+{
+	struct vic *vic = platform_get_drvdata(pdev);
+	int err;
+
+	err = host1x_client_unregister(&vic->client.base);
+	if (err < 0) {
+		dev_err(&pdev->dev, "failed to unregister host1x client: %d\n",
+			err);
+		return err;
+	}
+
+	clk_disable_unprepare(vic->clk);
+	tegra_powergate_power_off(vic->config->powergate_id);
+
+	return 0;
+}
+
+struct platform_driver tegra_vic_driver = {
+	.driver = {
+		.name = "tegra-vic",
+		.of_match_table = vic_match,
+	},
+	.probe = vic_probe,
+	.remove = vic_remove,
+};
diff --git a/drivers/gpu/drm/tegra/vic.h b/drivers/gpu/drm/tegra/vic.h
new file mode 100644
index 000000000000..65ca38a8da88
--- /dev/null
+++ b/drivers/gpu/drm/tegra/vic.h
@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 2015, NVIDIA Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef TEGRA_VIC_H
+#define TEGRA_VIC_H
+
+#include <linux/types.h>
+#include <linux/dma-attrs.h>
+#include <linux/firmware.h>
+#include <linux/platform_device.h>
+
+struct ucode_bin_header_v1_vic {
+	u32 bin_magic;        /* 0x10de */
+	u32 bin_ver;          /* cya, versioning of bin format (1) */
+	u32 bin_size;         /* entire image size including this header */
+	u32 os_bin_header_offset;
+	u32 os_bin_data_offset;
+	u32 os_bin_size;
+	u32 fce_bin_header_offset;
+	u32 fce_bin_data_offset;
+	u32 fce_bin_size;
+};
+
+struct ucode_os_code_header_v1_vic {
+	u32 offset;
+	u32 size;
+};
+
+struct ucode_os_header_v1_vic {
+	u32 os_code_offset;
+	u32 os_code_size;
+	u32 os_data_offset;
+	u32 os_data_size;
+	u32 num_apps;
+	struct ucode_os_code_header_v1_vic *app_code;
+	struct ucode_os_code_header_v1_vic *app_data;
+	u32 *os_ovl_offset;
+	u32 *of_ovl_size;
+};
+
+struct ucode_fce_header_v1_vic {
+	u32 fce_ucode_offset;
+	u32 fce_ucode_buffer_size;
+	u32 fce_ucode_size;
+};
+
+struct ucode_v1_vic {
+	struct ucode_bin_header_v1_vic *bin_header;
+	struct ucode_os_header_v1_vic  *os_header;
+	struct ucode_fce_header_v1_vic *fce_header;
+};
+
+/* VIC methods */
+#define NVA0B6_VIDEO_COMPOSITOR_SET_APPLICATION_ID	0x00000200
+#define NVA0B6_VIDEO_COMPOSITOR_SET_FCE_UCODE_SIZE	0x0000071C
+#define NVA0B6_VIDEO_COMPOSITOR_SET_FCE_UCODE_OFFSET	0x0000072C
+
+/* VIC registers */
+
+#define NV_PVIC_FALCON_METHOD_0			0x00000040
+#define NV_PVIC_FALCON_METHOD_1			0x00000044
+
+#define NV_PVIC_FALCON_IRQMSET			0x00001010
+#define IRQMSET_WDTMR_SET			(1 << 1)
+#define IRQMSET_HALT_SET			(1 << 4)
+#define IRQMSET_EXTERR_SET			(1 << 5)
+#define IRQMSET_SWGEN0_SET			(1 << 6)
+#define IRQMSET_SWGEN1_SET			(1 << 7)
+#define IRQMSET_EXT(val)			((val & 0xff) << 8)
+
+#define NV_PVIC_FALCON_IRQDEST			0x0000101c
+#define IRQDEST_HOST_HALT_HOST			(1 << 4)
+#define IRQDEST_HOST_EXTERR_HOST		(1 << 5)
+#define IRQDEST_HOST_SWGEN0_HOST		(1 << 6)
+#define IRQDEST_HOST_SWGEN1_HOST		(1 << 7)
+#define IRQDEST_HOST_EXT(val)			((val & 0xff) << 8)
+
+#define NV_PVIC_FALCON_ITFEN			0x00001048
+#define ITFEN_CTXEN_ENABLE			(1 << 0)
+#define ITFEN_MTHDEN_ENABLE			(1 << 1)
+
+#define NV_PVIC_FALCON_IDLESTATE		0x0000104c
+
+#define NV_PVIC_FALCON_CPUCTL			0x00001100
+#define CPUCTL_STARTCPU				(1 << 1)
+
+#define NV_PVIC_FALCON_BOOTVEC			0x00001104
+#define BOOTVEC_VEC(val)			((val & 0xffffffff) << 0)
+
+#define NV_PVIC_FALCON_DMACTL			0x0000110c
+
+#define NV_PVIC_FALCON_DMATRFBASE		0x00001110
+
+#define NV_PVIC_FALCON_DMATRFMOFFS		0x00001114
+#define DMATRFMOFFS_OFFS(val)			((val & 0xffff) << 0)
+
+#define NV_PVIC_FALCON_DMATRFCMD		0x00001118
+#define DMATRFCMD_IDLE				(1 << 1)
+#define DMATRFCMD_IMEM				(1 << 4)
+#define DMATRFCMD_SIZE_256B			(6 << 8)
+
+#define NV_PVIC_FALCON_DMATRFFBOFFS		0x0000111c
+#define DMATRFFBOFFS_OFFS(val)			((val & 0xffffffff) << 0)
+
+#define NV_PVIC_MISC_PRI_VIC_CG			0x000016d0
+#define CG_IDLE_CG_DLY_CNT(val)			((val & 0x3f) << 0)
+#define CG_IDLE_CG_EN				(1 << 6)
+#define CG_WAKEUP_DLY_CNT(val)			((val & 0xf) << 16)
+
+
+#endif /* TEGRA_VIC_H */
diff --git a/include/linux/host1x.h b/include/linux/host1x.h
index fc86ced77e76..a006dad00009 100644
--- a/include/linux/host1x.h
+++ b/include/linux/host1x.h
@@ -26,6 +26,7 @@ enum host1x_class {
 	HOST1X_CLASS_HOST1X = 0x1,
 	HOST1X_CLASS_GR2D = 0x51,
 	HOST1X_CLASS_GR2D_SB = 0x52,
+	HOST1X_CLASS_VIC = 0x5D,
 	HOST1X_CLASS_GR3D = 0x60,
 };
 
-- 
1.8.1.5

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