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"
48 	struct v3d_dev *v3d = to_v3d_dev(dev);  in v3d_get_param_ioctl()  local
60 	if (args->pad != 0)  in v3d_get_param_ioctl()
61 		return -EINVAL;  in v3d_get_param_ioctl()
67 	if (args->param < ARRAY_SIZE(reg_map) &&  in v3d_get_param_ioctl()
68 	    (reg_map[args->param] ||  in v3d_get_param_ioctl()
69 	     args->param == DRM_V3D_PARAM_V3D_CORE0_IDENT0)) {  in v3d_get_param_ioctl()
70 		u32 offset = reg_map[args->param];  in v3d_get_param_ioctl()
72 		if (args->value != 0)  in v3d_get_param_ioctl()
73 			return -EINVAL;  in v3d_get_param_ioctl()
75 		if (args->param >= DRM_V3D_PARAM_V3D_CORE0_IDENT0 &&  in v3d_get_param_ioctl()
76 		    args->param <= DRM_V3D_PARAM_V3D_CORE0_IDENT2) {  in v3d_get_param_ioctl()
77 			args->value = V3D_CORE_READ(0, offset);  in v3d_get_param_ioctl()
79 			args->value = V3D_READ(offset);  in v3d_get_param_ioctl()
84 	switch (args->param) {  in v3d_get_param_ioctl()
86 		args->value = 1;  in v3d_get_param_ioctl()
89 		args->value = v3d_has_csd(v3d);  in v3d_get_param_ioctl()
92 		args->value = 1;  in v3d_get_param_ioctl()
95 		args->value = (v3d->ver >= 40);  in v3d_get_param_ioctl()
98 		args->value = 1;  in v3d_get_param_ioctl()
101 		args->value = 1;  in v3d_get_param_ioctl()
104 		args->value = v3d->perfmon_info.max_counters;  in v3d_get_param_ioctl()
107 		args->value = !!v3d->gemfs;  in v3d_get_param_ioctl()
110 		DRM_DEBUG("Unknown parameter %d\n", args->param);  in v3d_get_param_ioctl()
111 		return -EINVAL;  in v3d_get_param_ioctl()
118 	struct v3d_dev *v3d = to_v3d_dev(dev);  in v3d_open()  local
125 		return -ENOMEM;  in v3d_open()
127 	v3d_priv->v3d = v3d;  in v3d_open()
130 		sched = &v3d->queue[i].sched;  in v3d_open()
131 		drm_sched_entity_init(&v3d_priv->sched_entity[i],  in v3d_open()
135 		memset(&v3d_priv->stats[i], 0, sizeof(v3d_priv->stats[i]));  in v3d_open()
136 		seqcount_init(&v3d_priv->stats[i].lock);  in v3d_open()
140 	file->driver_priv = v3d_priv;  in v3d_open()
148 	struct v3d_file_priv *v3d_priv = file->driver_priv;  in v3d_postclose()
152 		drm_sched_entity_destroy(&v3d_priv->sched_entity[q]);  in v3d_postclose()
164 		seq = read_seqcount_begin(&stats->lock);  in v3d_get_stats()
165 		*active_runtime = stats->enabled_ns;  in v3d_get_stats()
166 		if (stats->start_ns)  in v3d_get_stats()
167 			*active_runtime += timestamp - stats->start_ns;  in v3d_get_stats()
168 		*jobs_completed = stats->jobs_completed;  in v3d_get_stats()
169 	} while (read_seqcount_retry(&stats->lock, seq));  in v3d_get_stats()
174 	struct v3d_file_priv *file_priv = file->driver_priv;  in v3d_show_fdinfo()
179 		struct v3d_stats *stats = &file_priv->stats[queue];  in v3d_show_fdinfo()
187 		drm_printf(p, "drm-engine-%s: \t%llu ns\n",  in v3d_show_fdinfo()
193 		drm_printf(p, "v3d-jobs-%s: \t%llu jobs\n",  in v3d_show_fdinfo()
257 	{ .compatible = "brcm,2711-v3d" },
258 	{ .compatible = "brcm,2712-v3d" },
259 	{ .compatible = "brcm,7268-v3d" },
260 	{ .compatible = "brcm,7278-v3d" },
266 map_regs(struct v3d_dev *v3d, void __iomem **regs, const char *name)  in map_regs()  argument
268 	*regs = devm_platform_ioremap_resource_byname(v3d_to_pdev(v3d), name);  in map_regs()
274 	struct device *dev = &pdev->dev;  in v3d_platform_drm_probe()
276 	struct v3d_dev *v3d;  in v3d_platform_drm_probe()  local
282 	v3d = devm_drm_dev_alloc(dev, &v3d_drm_driver, struct v3d_dev, drm);  in v3d_platform_drm_probe()
283 	if (IS_ERR(v3d))  in v3d_platform_drm_probe()
284 		return PTR_ERR(v3d);  in v3d_platform_drm_probe()
286 	drm = &v3d->drm;  in v3d_platform_drm_probe()
290 	ret = map_regs(v3d, &v3d->hub_regs, "hub");  in v3d_platform_drm_probe()
294 	ret = map_regs(v3d, &v3d->core_regs[0], "core0");  in v3d_platform_drm_probe()
304 	v3d->va_width = 30 + V3D_GET_FIELD(mmu_debug, V3D_MMU_VA_WIDTH);  in v3d_platform_drm_probe()
307 	v3d->ver = (V3D_GET_FIELD(ident1, V3D_HUB_IDENT1_TVER) * 10 +  in v3d_platform_drm_probe()
309 	v3d->cores = V3D_GET_FIELD(ident1, V3D_HUB_IDENT1_NCORES);  in v3d_platform_drm_probe()
310 	WARN_ON(v3d->cores > 1); /* multicore not yet implemented */  in v3d_platform_drm_probe()
313 	v3d->rev = V3D_GET_FIELD(ident3, V3D_HUB_IDENT3_IPREV);  in v3d_platform_drm_probe()
315 	v3d_perfmon_init(v3d);  in v3d_platform_drm_probe()
317 	v3d->reset = devm_reset_control_get_exclusive(dev, NULL);  in v3d_platform_drm_probe()
318 	if (IS_ERR(v3d->reset)) {  in v3d_platform_drm_probe()
319 		ret = PTR_ERR(v3d->reset);  in v3d_platform_drm_probe()
321 		if (ret == -EPROBE_DEFER)  in v3d_platform_drm_probe()
324 		v3d->reset = NULL;  in v3d_platform_drm_probe()
325 		ret = map_regs(v3d, &v3d->bridge_regs, "bridge");  in v3d_platform_drm_probe()
333 	if (v3d->ver < 41) {  in v3d_platform_drm_probe()
334 		ret = map_regs(v3d, &v3d->gca_regs, "gca");  in v3d_platform_drm_probe()
339 	v3d->mmu_scratch = dma_alloc_wc(dev, 4096, &v3d->mmu_scratch_paddr,  in v3d_platform_drm_probe()
341 	if (!v3d->mmu_scratch) {  in v3d_platform_drm_probe()
343 		return -ENOMEM;  in v3d_platform_drm_probe()
350 	ret = v3d_irq_init(v3d);  in v3d_platform_drm_probe()
367 	v3d_irq_disable(v3d);  in v3d_platform_drm_probe()
371 	dma_free_wc(dev, 4096, v3d->mmu_scratch, v3d->mmu_scratch_paddr);  in v3d_platform_drm_probe()
378 	struct v3d_dev *v3d = to_v3d_dev(drm);  in v3d_platform_drm_remove()  local
379 	struct device *dev = &pdev->dev;  in v3d_platform_drm_remove()
387 	dma_free_wc(v3d->drm.dev, 4096, v3d->mmu_scratch,  in v3d_platform_drm_remove()
388 		    v3d->mmu_scratch_paddr);  in v3d_platform_drm_remove()
395 		.name	= "v3d",
402 MODULE_ALIAS("platform:v3d-drm");
403 MODULE_DESCRIPTION("Broadcom V3D DRM Driver");