1 // SPDX-License-Identifier: GPL-2.0+
2 /* Copyright (C) 2014-2018 Broadcom */
5  * DOC: Broadcom V3D Graphics Driver
7  * This driver supports the Broadcom V3D 3.3 and 4.1 OpenGL ES GPUs.
8  * For V3D 2.x support, see the VC4 driver.
10  * The V3D GPU includes a tiled render (composed of a bin and render
17 #include <linux/dma-mapping.h>
32 #define DRIVER_NAME "v3d"
33 #define DRIVER_DESC "Broadcom V3D graphics"
42 	struct v3d_dev *v3d = to_v3d_dev(dev);  in v3d_get_param_ioctl()  local
54 	if (args->pad != 0)  in v3d_get_param_ioctl()
55 		return -EINVAL;  in v3d_get_param_ioctl()
61 	if (args->param < ARRAY_SIZE(reg_map) &&  in v3d_get_param_ioctl()
62 	    (reg_map[args->param] ||  in v3d_get_param_ioctl()
63 	     args->param == DRM_V3D_PARAM_V3D_CORE0_IDENT0)) {  in v3d_get_param_ioctl()
64 		u32 offset = reg_map[args->param];  in v3d_get_param_ioctl()
66 		if (args->value != 0)  in v3d_get_param_ioctl()
67 			return -EINVAL;  in v3d_get_param_ioctl()
69 		if (args->param >= DRM_V3D_PARAM_V3D_CORE0_IDENT0 &&  in v3d_get_param_ioctl()
70 		    args->param <= DRM_V3D_PARAM_V3D_CORE0_IDENT2) {  in v3d_get_param_ioctl()
71 			args->value = V3D_CORE_READ(0, offset);  in v3d_get_param_ioctl()
73 			args->value = V3D_READ(offset);  in v3d_get_param_ioctl()
78 	switch (args->param) {  in v3d_get_param_ioctl()
80 		args->value = 1;  in v3d_get_param_ioctl()
83 		args->value = v3d_has_csd(v3d);  in v3d_get_param_ioctl()
86 		args->value = 1;  in v3d_get_param_ioctl()
89 		args->value = (v3d->ver >= 40);  in v3d_get_param_ioctl()
92 		args->value = 1;  in v3d_get_param_ioctl()
95 		args->value = 1;  in v3d_get_param_ioctl()
98 		DRM_DEBUG("Unknown parameter %d\n", args->param);  in v3d_get_param_ioctl()
99 		return -EINVAL;  in v3d_get_param_ioctl()
106 	struct v3d_dev *v3d = to_v3d_dev(dev);  in v3d_open()  local
113 		return -ENOMEM;  in v3d_open()
115 	v3d_priv->v3d = v3d;  in v3d_open()
118 		v3d_priv->enabled_ns[i] = 0;  in v3d_open()
119 		v3d_priv->start_ns[i] = 0;  in v3d_open()
120 		v3d_priv->jobs_sent[i] = 0;  in v3d_open()
122 		sched = &v3d->queue[i].sched;  in v3d_open()
123 		drm_sched_entity_init(&v3d_priv->sched_entity[i],  in v3d_open()
129 	file->driver_priv = v3d_priv;  in v3d_open()
137 	struct v3d_file_priv *v3d_priv = file->driver_priv;  in v3d_postclose()
141 		drm_sched_entity_destroy(&v3d_priv->sched_entity[q]);  in v3d_postclose()
149 	struct v3d_file_priv *file_priv = file->driver_priv;  in v3d_show_fdinfo()
157 		drm_printf(p, "drm-engine-%s: \t%llu ns\n",  in v3d_show_fdinfo()
159 			   file_priv->start_ns[queue] ? file_priv->enabled_ns[queue]  in v3d_show_fdinfo()
160 						      + timestamp - file_priv->start_ns[queue]  in v3d_show_fdinfo()
161 						      : file_priv->enabled_ns[queue]);  in v3d_show_fdinfo()
166 		drm_printf(p, "v3d-jobs-%s: \t%llu jobs\n",  in v3d_show_fdinfo()
167 			   v3d_queue_to_string(queue), file_priv->jobs_sent[queue]);  in v3d_show_fdinfo()
227 	{ .compatible = "brcm,2711-v3d" },
228 	{ .compatible = "brcm,2712-v3d" },
229 	{ .compatible = "brcm,7268-v3d" },
230 	{ .compatible = "brcm,7278-v3d" },
236 map_regs(struct v3d_dev *v3d, void __iomem **regs, const char *name)  in map_regs()  argument
238 	*regs = devm_platform_ioremap_resource_byname(v3d_to_pdev(v3d), name);  in map_regs()
244 	struct device *dev = &pdev->dev;  in v3d_platform_drm_probe()
246 	struct v3d_dev *v3d;  in v3d_platform_drm_probe()  local
252 	v3d = devm_drm_dev_alloc(dev, &v3d_drm_driver, struct v3d_dev, drm);  in v3d_platform_drm_probe()
253 	if (IS_ERR(v3d))  in v3d_platform_drm_probe()
254 		return PTR_ERR(v3d);  in v3d_platform_drm_probe()
256 	drm = &v3d->drm;  in v3d_platform_drm_probe()
260 	ret = map_regs(v3d, &v3d->hub_regs, "hub");  in v3d_platform_drm_probe()
264 	ret = map_regs(v3d, &v3d->core_regs[0], "core0");  in v3d_platform_drm_probe()
274 	v3d->va_width = 30 + V3D_GET_FIELD(mmu_debug, V3D_MMU_VA_WIDTH);  in v3d_platform_drm_probe()
277 	v3d->ver = (V3D_GET_FIELD(ident1, V3D_HUB_IDENT1_TVER) * 10 +  in v3d_platform_drm_probe()
279 	v3d->cores = V3D_GET_FIELD(ident1, V3D_HUB_IDENT1_NCORES);  in v3d_platform_drm_probe()
280 	WARN_ON(v3d->cores > 1); /* multicore not yet implemented */  in v3d_platform_drm_probe()
282 	v3d->reset = devm_reset_control_get_exclusive(dev, NULL);  in v3d_platform_drm_probe()
283 	if (IS_ERR(v3d->reset)) {  in v3d_platform_drm_probe()
284 		ret = PTR_ERR(v3d->reset);  in v3d_platform_drm_probe()
286 		if (ret == -EPROBE_DEFER)  in v3d_platform_drm_probe()
289 		v3d->reset = NULL;  in v3d_platform_drm_probe()
290 		ret = map_regs(v3d, &v3d->bridge_regs, "bridge");  in v3d_platform_drm_probe()
298 	if (v3d->ver < 41) {  in v3d_platform_drm_probe()
299 		ret = map_regs(v3d, &v3d->gca_regs, "gca");  in v3d_platform_drm_probe()
304 	v3d->mmu_scratch = dma_alloc_wc(dev, 4096, &v3d->mmu_scratch_paddr,  in v3d_platform_drm_probe()
306 	if (!v3d->mmu_scratch) {  in v3d_platform_drm_probe()
308 		return -ENOMEM;  in v3d_platform_drm_probe()
315 	ret = v3d_irq_init(v3d);  in v3d_platform_drm_probe()
332 	v3d_irq_disable(v3d);  in v3d_platform_drm_probe()
336 	dma_free_wc(dev, 4096, v3d->mmu_scratch, v3d->mmu_scratch_paddr);  in v3d_platform_drm_probe()
343 	struct v3d_dev *v3d = to_v3d_dev(drm);  in v3d_platform_drm_remove()  local
344 	struct device *dev = &pdev->dev;  in v3d_platform_drm_remove()
352 	dma_free_wc(v3d->drm.dev, 4096, v3d->mmu_scratch,  in v3d_platform_drm_remove()
353 		    v3d->mmu_scratch_paddr);  in v3d_platform_drm_remove()
360 		.name	= "v3d",
367 MODULE_ALIAS("platform:v3d-drm");
368 MODULE_DESCRIPTION("Broadcom V3D DRM Driver");