drivers/gpu/drm/msm/adreno/adreno_device.c - arm/linux - Git at Google

 /*
  * Copyright (C) 2013-2014 Red Hat
  * Author: Rob Clark <robdclark@gmail.com>
  *
  * Copyright (c) 2014,2017 The Linux Foundation. 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 published by
  * the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  * more details.
  *
  * You should have received a copy of the GNU General Public License along with
  * this program.  If not, see <http://www.gnu.org/licenses/>.
  */

 #include <linux/pm_opp.h>
 #include "adreno_gpu.h"

 #define ANY_ID 0xff

 bool hang_debug = false;
 MODULE_PARM_DESC(hang_debug, "Dump registers when hang is detected (can be slow!)");
 module_param_named(hang_debug, hang_debug, bool, 0600);

 static const struct adreno_info gpulist[] = {
 	{
 		.rev   = ADRENO_REV(3, 0, 5, ANY_ID),
 		.revn  = 305,
 		.name  = "A305",
 		.pm4fw = "a300_pm4.fw",
 		.pfpfw = "a300_pfp.fw",
 		.gmem  = SZ_256K,
 		.init  = a3xx_gpu_init,
 	}, {
 		.rev   = ADRENO_REV(3, 0, 6, 0),
 		.revn  = 307,        /* because a305c is revn==306 */
 		.name  = "A306",
 		.pm4fw = "a300_pm4.fw",
 		.pfpfw = "a300_pfp.fw",
 		.gmem  = SZ_128K,
 		.init  = a3xx_gpu_init,
 	}, {
 		.rev   = ADRENO_REV(3, 2, ANY_ID, ANY_ID),
 		.revn  = 320,
 		.name  = "A320",
 		.pm4fw = "a300_pm4.fw",
 		.pfpfw = "a300_pfp.fw",
 		.gmem  = SZ_512K,
 		.init  = a3xx_gpu_init,
 	}, {
 		.rev   = ADRENO_REV(3, 3, 0, ANY_ID),
 		.revn  = 330,
 		.name  = "A330",
 		.pm4fw = "a330_pm4.fw",
 		.pfpfw = "a330_pfp.fw",
 		.gmem  = SZ_1M,
 		.init  = a3xx_gpu_init,
 	}, {
 		.rev   = ADRENO_REV(4, 2, 0, ANY_ID),
 		.revn  = 420,
 		.name  = "A420",
 		.pm4fw = "a420_pm4.fw",
 		.pfpfw = "a420_pfp.fw",
 		.gmem  = (SZ_1M + SZ_512K),
 		.init  = a4xx_gpu_init,
 	}, {
 		.rev   = ADRENO_REV(4, 3, 0, ANY_ID),
 		.revn  = 430,
 		.name  = "A430",
 		.pm4fw = "a420_pm4.fw",
 		.pfpfw = "a420_pfp.fw",
 		.gmem  = (SZ_1M + SZ_512K),
 		.init  = a4xx_gpu_init,
 	}, {
 		.rev = ADRENO_REV(5, 3, 0, 2),
 		.revn = 530,
 		.name = "A530",
 		.pm4fw = "a530_pm4.fw",
 		.pfpfw = "a530_pfp.fw",
 		.gmem = SZ_1M,
 		.quirks = ADRENO_QUIRK_TWO_PASS_USE_WFI |
 			ADRENO_QUIRK_FAULT_DETECT_MASK,
 		.init = a5xx_gpu_init,
 		.gpmufw = "a530v3_gpmu.fw2",
 		.zapfw = "a530_zap.mdt",
 	},
 };

 MODULE_FIRMWARE("a300_pm4.fw");
 MODULE_FIRMWARE("a300_pfp.fw");
 MODULE_FIRMWARE("a330_pm4.fw");
 MODULE_FIRMWARE("a330_pfp.fw");
 MODULE_FIRMWARE("a420_pm4.fw");
 MODULE_FIRMWARE("a420_pfp.fw");
 MODULE_FIRMWARE("a530_fm4.fw");
 MODULE_FIRMWARE("a530_pfp.fw");

 static inline bool _rev_match(uint8_t entry, uint8_t id)
 {
 	return (entry == ANY_ID) || (entry == id);
 }

 const struct adreno_info *adreno_info(struct adreno_rev rev)
 {
 	int i;

 	/* identify gpu: */
 	for (i = 0; i < ARRAY_SIZE(gpulist); i++) {
 		const struct adreno_info *info = &gpulist[i];
 		if (_rev_match(info->rev.core, rev.core) &&
 				_rev_match(info->rev.major, rev.major) &&
 				_rev_match(info->rev.minor, rev.minor) &&
 				_rev_match(info->rev.patchid, rev.patchid))
 			return info;
 	}

 	return NULL;
 }

 struct msm_gpu *adreno_load_gpu(struct drm_device *dev)
 {
 	struct msm_drm_private *priv = dev->dev_private;
 	struct platform_device *pdev = priv->gpu_pdev;
 	struct adreno_platform_config *config;
 	struct adreno_rev rev;
 	const struct adreno_info *info;
 	struct msm_gpu *gpu = NULL;

 	if (!pdev) {
 		dev_err(dev->dev, "no adreno device\n");
 		return NULL;
 	}

 	config = pdev->dev.platform_data;
 	rev = config->rev;
 	info = adreno_info(config->rev);

 	if (!info) {
 		dev_warn(dev->dev, "Unknown GPU revision: %u.%u.%u.%u\n",
 				rev.core, rev.major, rev.minor, rev.patchid);
 		return NULL;
 	}

 	DBG("Found GPU: %u.%u.%u.%u",  rev.core, rev.major,
 			rev.minor, rev.patchid);

 	gpu = info->init(dev);
 	if (IS_ERR(gpu)) {
 		dev_warn(dev->dev, "failed to load adreno gpu\n");
 		gpu = NULL;
 		/* not fatal */
 	}

 	if (gpu) {
 		int ret;

 		pm_runtime_get_sync(&pdev->dev);
 		mutex_lock(&dev->struct_mutex);
 		ret = msm_gpu_hw_init(gpu);
 		mutex_unlock(&dev->struct_mutex);
 		pm_runtime_put_sync(&pdev->dev);
 		if (ret) {
 			dev_err(dev->dev, "gpu hw init failed: %d\n", ret);
 			gpu->funcs->destroy(gpu);
 			gpu = NULL;
 		}
 	}

 	return gpu;
 }

 static void set_gpu_pdev(struct drm_device *dev,
 		struct platform_device *pdev)
 {
 	struct msm_drm_private *priv = dev->dev_private;
 	priv->gpu_pdev = pdev;
 }

 static int find_chipid(struct device *dev, u32 *chipid)
 {
 	struct device_node *node = dev->of_node;
 	const char *compat;
 	int ret;

 	/* first search the compat strings for qcom,adreno-XYZ.W: */
 	ret = of_property_read_string_index(node, "compatible", 0, &compat);
 	if (ret == 0) {
 		unsigned rev, patch;

 		if (sscanf(compat, "qcom,adreno-%u.%u", &rev, &patch) == 2) {
 			*chipid = 0;
 			*chipid |= (rev / 100) << 24;  /* core */
 			rev %= 100;
 			*chipid |= (rev / 10) << 16;   /* major */
 			rev %= 10;
 			*chipid |= rev << 8;           /* minor */
 			*chipid |= patch;

 			return 0;
 		}
 	}

 	/* and if that fails, fall back to legacy "qcom,chipid" property: */
 	ret = of_property_read_u32(node, "qcom,chipid", chipid);
 	if (ret)
 		return ret;

 	dev_warn(dev, "Using legacy qcom,chipid binding!\n");
 	dev_warn(dev, "Use compatible qcom,adreno-%u%u%u.%u instead.\n",
 			(*chipid >> 24) & 0xff, (*chipid >> 16) & 0xff,
 			(*chipid >> 8) & 0xff, *chipid & 0xff);

 	return 0;
 }

 /* Get legacy powerlevels from qcom,gpu-pwrlevels and populate the opp table */
 static int adreno_get_legacy_pwrlevels(struct device *dev)
 {
 	struct device_node *child, *node;
 	int ret;

 	node = of_find_compatible_node(dev->of_node, NULL,
 		"qcom,gpu-pwrlevels");
 	if (!node) {
 		dev_err(dev, "Could not find the GPU powerlevels\n");
 		return -ENXIO;
 	}

 	for_each_child_of_node(node, child) {
 		unsigned int val;

 		ret = of_property_read_u32(child, "qcom,gpu-freq", &val);
 		if (ret)
 			continue;

 		/*
 		 * Skip the intentionally bogus clock value found at the bottom
 		 * of most legacy frequency tables
 		 */
 		if (val != 27000000)
 			dev_pm_opp_add(dev, val, 0);
 	}

 	return 0;
 }

 static int adreno_get_pwrlevels(struct device *dev,
 		struct adreno_platform_config *config)
 {
 	unsigned long freq = ULONG_MAX;
 	struct dev_pm_opp *opp;
 	int ret;

 	/* You down with OPP? */
 	if (!of_find_property(dev->of_node, "operating-points-v2", NULL))
 		ret = adreno_get_legacy_pwrlevels(dev);
 	else
 		ret = dev_pm_opp_of_add_table(dev);

 	if (ret)
 		return ret;

 	/* Find the fastest defined rate */
 	opp = dev_pm_opp_find_freq_floor(dev, &freq);
 	if (!IS_ERR(opp))
 		config->fast_rate = dev_pm_opp_get_freq(opp);

 	if (!config->fast_rate) {
 		DRM_DEV_INFO(dev,
 			"Could not find clock rate. Using default\n");
 		/* Pick a suitably safe clock speed for any target */
 		config->fast_rate = 200000000;
 	}

 	return 0;
 }

 static int adreno_bind(struct device *dev, struct device *master, void *data)
 {
 	static struct adreno_platform_config config = {};
 	u32 val;
 	int ret;

 	ret = find_chipid(dev, &val);
 	if (ret) {
 		dev_err(dev, "could not find chipid: %d\n", ret);
 		return ret;
 	}

 	config.rev = ADRENO_REV((val >> 24) & 0xff,
 			(val >> 16) & 0xff, (val >> 8) & 0xff, val & 0xff);

 	/* find clock rates: */
 	config.fast_rate = 0;

 	ret = adreno_get_pwrlevels(dev, &config);
 	if (ret)
 		return ret;

 	dev->platform_data = &config;
 	set_gpu_pdev(dev_get_drvdata(master), to_platform_device(dev));
 	return 0;
 }

 static void adreno_unbind(struct device *dev, struct device *master,
 		void *data)
 {
 	set_gpu_pdev(dev_get_drvdata(master), NULL);
 }

 static const struct component_ops a3xx_ops = {
 		.bind   = adreno_bind,
 		.unbind = adreno_unbind,
 };

 static int adreno_probe(struct platform_device *pdev)
 {
 	return component_add(&pdev->dev, &a3xx_ops);
 }

 static int adreno_remove(struct platform_device *pdev)
 {
 	component_del(&pdev->dev, &a3xx_ops);
 	return 0;
 }

 static const struct of_device_id dt_match[] = {
 	{ .compatible = "qcom,adreno" },
 	{ .compatible = "qcom,adreno-3xx" },
 	/* for backwards compat w/ downstream kgsl DT files: */
 	{ .compatible = "qcom,kgsl-3d0" },
 	{}
 };

 #ifdef CONFIG_PM
 static int adreno_resume(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct msm_gpu *gpu = platform_get_drvdata(pdev);

 	return gpu->funcs->pm_resume(gpu);
 }

 static int adreno_suspend(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct msm_gpu *gpu = platform_get_drvdata(pdev);

 	return gpu->funcs->pm_suspend(gpu);
 }
 #endif

 static const struct dev_pm_ops adreno_pm_ops = {
 	SET_RUNTIME_PM_OPS(adreno_suspend, adreno_resume, NULL)
 };

 static struct platform_driver adreno_driver = {
 	.probe = adreno_probe,
 	.remove = adreno_remove,
 	.driver = {
 		.name = "adreno",
 		.of_match_table = dt_match,
 		.pm = &adreno_pm_ops,
 	},
 };

 void __init adreno_register(void)
 {
 	platform_driver_register(&adreno_driver);
 }

 void __exit adreno_unregister(void)
 {
 	platform_driver_unregister(&adreno_driver);
 }
	/*
	* Copyright (C) 2013-2014 Red Hat
	* Author: Rob Clark <robdclark@gmail.com>
	*
	* Copyright (c) 2014,2017 The Linux Foundation. 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 published by
	* the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	* more details.
	*
	* You should have received a copy of the GNU General Public License along with
	* this program. If not, see <http://www.gnu.org/licenses/>.
	*/

	#include <linux/pm_opp.h>
	#include "adreno_gpu.h"

	#define ANY_ID 0xff

	bool hang_debug = false;
	MODULE_PARM_DESC(hang_debug, "Dump registers when hang is detected (can be slow!)");
	module_param_named(hang_debug, hang_debug, bool, 0600);

	static const struct adreno_info gpulist[] = {
	{
	.rev = ADRENO_REV(3, 0, 5, ANY_ID),
	.revn = 305,
	.name = "A305",
	.pm4fw = "a300_pm4.fw",
	.pfpfw = "a300_pfp.fw",
	.gmem = SZ_256K,
	.init = a3xx_gpu_init,
	}, {
	.rev = ADRENO_REV(3, 0, 6, 0),
	.revn = 307, /* because a305c is revn==306 */
	.name = "A306",
	.pm4fw = "a300_pm4.fw",
	.pfpfw = "a300_pfp.fw",
	.gmem = SZ_128K,
	.init = a3xx_gpu_init,
	}, {
	.rev = ADRENO_REV(3, 2, ANY_ID, ANY_ID),
	.revn = 320,
	.name = "A320",
	.pm4fw = "a300_pm4.fw",
	.pfpfw = "a300_pfp.fw",
	.gmem = SZ_512K,
	.init = a3xx_gpu_init,
	}, {
	.rev = ADRENO_REV(3, 3, 0, ANY_ID),
	.revn = 330,
	.name = "A330",
	.pm4fw = "a330_pm4.fw",
	.pfpfw = "a330_pfp.fw",
	.gmem = SZ_1M,
	.init = a3xx_gpu_init,
	}, {
	.rev = ADRENO_REV(4, 2, 0, ANY_ID),
	.revn = 420,
	.name = "A420",
	.pm4fw = "a420_pm4.fw",
	.pfpfw = "a420_pfp.fw",
	.gmem = (SZ_1M + SZ_512K),
	.init = a4xx_gpu_init,
	}, {
	.rev = ADRENO_REV(4, 3, 0, ANY_ID),
	.revn = 430,
	.name = "A430",
	.pm4fw = "a420_pm4.fw",
	.pfpfw = "a420_pfp.fw",
	.gmem = (SZ_1M + SZ_512K),
	.init = a4xx_gpu_init,
	}, {
	.rev = ADRENO_REV(5, 3, 0, 2),
	.revn = 530,
	.name = "A530",
	.pm4fw = "a530_pm4.fw",
	.pfpfw = "a530_pfp.fw",
	.gmem = SZ_1M,
	.quirks = ADRENO_QUIRK_TWO_PASS_USE_WFI \|
	ADRENO_QUIRK_FAULT_DETECT_MASK,
	.init = a5xx_gpu_init,
	.gpmufw = "a530v3_gpmu.fw2",
	.zapfw = "a530_zap.mdt",
	},
	};

	MODULE_FIRMWARE("a300_pm4.fw");
	MODULE_FIRMWARE("a300_pfp.fw");
	MODULE_FIRMWARE("a330_pm4.fw");
	MODULE_FIRMWARE("a330_pfp.fw");
	MODULE_FIRMWARE("a420_pm4.fw");
	MODULE_FIRMWARE("a420_pfp.fw");
	MODULE_FIRMWARE("a530_fm4.fw");
	MODULE_FIRMWARE("a530_pfp.fw");

	static inline bool _rev_match(uint8_t entry, uint8_t id)
	{
	return (entry == ANY_ID) \|\| (entry == id);
	}

	const struct adreno_info *adreno_info(struct adreno_rev rev)
	{
	int i;

	/* identify gpu: */
	for (i = 0; i < ARRAY_SIZE(gpulist); i++) {
	const struct adreno_info *info = &gpulist[i];
	if (_rev_match(info->rev.core, rev.core) &&
	_rev_match(info->rev.major, rev.major) &&
	_rev_match(info->rev.minor, rev.minor) &&
	_rev_match(info->rev.patchid, rev.patchid))
	return info;
	}

	return NULL;
	}

	struct msm_gpu adreno_load_gpu(struct drm_device dev)
	{
	struct msm_drm_private *priv = dev->dev_private;
	struct platform_device *pdev = priv->gpu_pdev;
	struct adreno_platform_config *config;
	struct adreno_rev rev;
	const struct adreno_info *info;
	struct msm_gpu *gpu = NULL;

	if (!pdev) {
	dev_err(dev->dev, "no adreno device\n");
	return NULL;
	}

	config = pdev->dev.platform_data;
	rev = config->rev;
	info = adreno_info(config->rev);

	if (!info) {
	dev_warn(dev->dev, "Unknown GPU revision: %u.%u.%u.%u\n",
	rev.core, rev.major, rev.minor, rev.patchid);
	return NULL;
	}

	DBG("Found GPU: %u.%u.%u.%u", rev.core, rev.major,
	rev.minor, rev.patchid);

	gpu = info->init(dev);
	if (IS_ERR(gpu)) {
	dev_warn(dev->dev, "failed to load adreno gpu\n");
	gpu = NULL;
	/* not fatal */
	}

	if (gpu) {
	int ret;

	pm_runtime_get_sync(&pdev->dev);
	mutex_lock(&dev->struct_mutex);
	ret = msm_gpu_hw_init(gpu);
	mutex_unlock(&dev->struct_mutex);
	pm_runtime_put_sync(&pdev->dev);
	if (ret) {
	dev_err(dev->dev, "gpu hw init failed: %d\n", ret);
	gpu->funcs->destroy(gpu);
	gpu = NULL;
	}
	}

	return gpu;
	}

	static void set_gpu_pdev(struct drm_device *dev,
	struct platform_device *pdev)
	{
	struct msm_drm_private *priv = dev->dev_private;
	priv->gpu_pdev = pdev;
	}

	static int find_chipid(struct device dev, u32 chipid)
	{
	struct device_node *node = dev->of_node;
	const char *compat;
	int ret;

	/* first search the compat strings for qcom,adreno-XYZ.W: */
	ret = of_property_read_string_index(node, "compatible", 0, &compat);
	if (ret == 0) {
	unsigned rev, patch;

	if (sscanf(compat, "qcom,adreno-%u.%u", &rev, &patch) == 2) {
	*chipid = 0;
	chipid \|= (rev / 100) << 24; / core */
	rev %= 100;
	chipid \|= (rev / 10) << 16; / major */
	rev %= 10;
	chipid \|= rev << 8; / minor */
	*chipid \|= patch;

	return 0;
	}
	}

	/* and if that fails, fall back to legacy "qcom,chipid" property: */
	ret = of_property_read_u32(node, "qcom,chipid", chipid);
	if (ret)
	return ret;

	dev_warn(dev, "Using legacy qcom,chipid binding!\n");
	dev_warn(dev, "Use compatible qcom,adreno-%u%u%u.%u instead.\n",
	(chipid >> 24) & 0xff, (chipid >> 16) & 0xff,
	(chipid >> 8) & 0xff, chipid & 0xff);

	return 0;
	}

	/* Get legacy powerlevels from qcom,gpu-pwrlevels and populate the opp table */
	static int adreno_get_legacy_pwrlevels(struct device *dev)
	{
	struct device_node child, node;
	int ret;

	node = of_find_compatible_node(dev->of_node, NULL,
	"qcom,gpu-pwrlevels");
	if (!node) {
	dev_err(dev, "Could not find the GPU powerlevels\n");
	return -ENXIO;
	}

	for_each_child_of_node(node, child) {
	unsigned int val;

	ret = of_property_read_u32(child, "qcom,gpu-freq", &val);
	if (ret)
	continue;

	/*
	* Skip the intentionally bogus clock value found at the bottom
	* of most legacy frequency tables
	*/
	if (val != 27000000)
	dev_pm_opp_add(dev, val, 0);
	}

	return 0;
	}

	static int adreno_get_pwrlevels(struct device *dev,
	struct adreno_platform_config *config)
	{
	unsigned long freq = ULONG_MAX;
	struct dev_pm_opp *opp;
	int ret;

	/* You down with OPP? */
	if (!of_find_property(dev->of_node, "operating-points-v2", NULL))
	ret = adreno_get_legacy_pwrlevels(dev);
	else
	ret = dev_pm_opp_of_add_table(dev);

	if (ret)
	return ret;

	/* Find the fastest defined rate */
	opp = dev_pm_opp_find_freq_floor(dev, &freq);
	if (!IS_ERR(opp))
	config->fast_rate = dev_pm_opp_get_freq(opp);

	if (!config->fast_rate) {
	DRM_DEV_INFO(dev,
	"Could not find clock rate. Using default\n");
	/* Pick a suitably safe clock speed for any target */
	config->fast_rate = 200000000;
	}

	return 0;
	}

	static int adreno_bind(struct device dev, struct device master, void *data)
	{
	static struct adreno_platform_config config = {};
	u32 val;
	int ret;

	ret = find_chipid(dev, &val);
	if (ret) {
	dev_err(dev, "could not find chipid: %d\n", ret);
	return ret;
	}

	config.rev = ADRENO_REV((val >> 24) & 0xff,
	(val >> 16) & 0xff, (val >> 8) & 0xff, val & 0xff);

	/* find clock rates: */
	config.fast_rate = 0;

	ret = adreno_get_pwrlevels(dev, &config);
	if (ret)
	return ret;

	dev->platform_data = &config;
	set_gpu_pdev(dev_get_drvdata(master), to_platform_device(dev));
	return 0;
	}

	static void adreno_unbind(struct device dev, struct device master,
	void *data)
	{
	set_gpu_pdev(dev_get_drvdata(master), NULL);
	}

	static const struct component_ops a3xx_ops = {
	.bind = adreno_bind,
	.unbind = adreno_unbind,
	};

	static int adreno_probe(struct platform_device *pdev)
	{
	return component_add(&pdev->dev, &a3xx_ops);
	}

	static int adreno_remove(struct platform_device *pdev)
	{
	component_del(&pdev->dev, &a3xx_ops);
	return 0;
	}

	static const struct of_device_id dt_match[] = {
	{ .compatible = "qcom,adreno" },
	{ .compatible = "qcom,adreno-3xx" },
	/* for backwards compat w/ downstream kgsl DT files: */
	{ .compatible = "qcom,kgsl-3d0" },
	{}
	};

	#ifdef CONFIG_PM
	static int adreno_resume(struct device *dev)
	{
	struct platform_device *pdev = to_platform_device(dev);
	struct msm_gpu *gpu = platform_get_drvdata(pdev);

	return gpu->funcs->pm_resume(gpu);
	}

	static int adreno_suspend(struct device *dev)
	{
	struct platform_device *pdev = to_platform_device(dev);
	struct msm_gpu *gpu = platform_get_drvdata(pdev);

	return gpu->funcs->pm_suspend(gpu);
	}
	#endif

	static const struct dev_pm_ops adreno_pm_ops = {
	SET_RUNTIME_PM_OPS(adreno_suspend, adreno_resume, NULL)
	};

	static struct platform_driver adreno_driver = {
	.probe = adreno_probe,
	.remove = adreno_remove,
	.driver = {
	.name = "adreno",
	.of_match_table = dt_match,
	.pm = &adreno_pm_ops,
	},
	};

	void __init adreno_register(void)
	{
	platform_driver_register(&adreno_driver);
	}

	void __exit adreno_unregister(void)
	{
	platform_driver_unregister(&adreno_driver);
	}