![The etnaviv authors](/assets/img/avatar_default.png)
This adds the etnaviv DRM driver and hooks it up in Makefiles and Kconfig. Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
708 lines
16 KiB
C
708 lines
16 KiB
C
/*
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* Copyright (C) 2015 Etnaviv Project
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/component.h>
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#include <linux/of_platform.h>
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#include "etnaviv_drv.h"
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#include "etnaviv_gpu.h"
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#include "etnaviv_gem.h"
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#include "etnaviv_mmu.h"
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#include "etnaviv_gem.h"
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#ifdef CONFIG_DRM_ETNAVIV_REGISTER_LOGGING
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static bool reglog;
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MODULE_PARM_DESC(reglog, "Enable register read/write logging");
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module_param(reglog, bool, 0600);
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#else
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#define reglog 0
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#endif
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void __iomem *etnaviv_ioremap(struct platform_device *pdev, const char *name,
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const char *dbgname)
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{
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struct resource *res;
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void __iomem *ptr;
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if (name)
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res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name);
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else
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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ptr = devm_ioremap_resource(&pdev->dev, res);
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if (IS_ERR(ptr)) {
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dev_err(&pdev->dev, "failed to ioremap %s: %ld\n", name,
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PTR_ERR(ptr));
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return ptr;
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}
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if (reglog)
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dev_printk(KERN_DEBUG, &pdev->dev, "IO:region %s 0x%p %08zx\n",
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dbgname, ptr, (size_t)resource_size(res));
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return ptr;
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}
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void etnaviv_writel(u32 data, void __iomem *addr)
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{
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if (reglog)
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printk(KERN_DEBUG "IO:W %p %08x\n", addr, data);
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writel(data, addr);
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}
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u32 etnaviv_readl(const void __iomem *addr)
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{
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u32 val = readl(addr);
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if (reglog)
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printk(KERN_DEBUG "IO:R %p %08x\n", addr, val);
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return val;
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}
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/*
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* DRM operations:
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*/
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static void load_gpu(struct drm_device *dev)
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{
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struct etnaviv_drm_private *priv = dev->dev_private;
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unsigned int i;
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for (i = 0; i < ETNA_MAX_PIPES; i++) {
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struct etnaviv_gpu *g = priv->gpu[i];
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if (g) {
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int ret;
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ret = etnaviv_gpu_init(g);
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if (ret) {
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dev_err(g->dev, "hw init failed: %d\n", ret);
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priv->gpu[i] = NULL;
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}
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}
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}
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}
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static int etnaviv_open(struct drm_device *dev, struct drm_file *file)
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{
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struct etnaviv_file_private *ctx;
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ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
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if (!ctx)
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return -ENOMEM;
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file->driver_priv = ctx;
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return 0;
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}
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static void etnaviv_preclose(struct drm_device *dev, struct drm_file *file)
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{
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struct etnaviv_drm_private *priv = dev->dev_private;
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struct etnaviv_file_private *ctx = file->driver_priv;
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unsigned int i;
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for (i = 0; i < ETNA_MAX_PIPES; i++) {
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struct etnaviv_gpu *gpu = priv->gpu[i];
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if (gpu) {
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mutex_lock(&gpu->lock);
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if (gpu->lastctx == ctx)
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gpu->lastctx = NULL;
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mutex_unlock(&gpu->lock);
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}
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}
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kfree(ctx);
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}
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/*
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* DRM debugfs:
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*/
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#ifdef CONFIG_DEBUG_FS
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static int etnaviv_gem_show(struct drm_device *dev, struct seq_file *m)
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{
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struct etnaviv_drm_private *priv = dev->dev_private;
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etnaviv_gem_describe_objects(priv, m);
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return 0;
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}
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static int etnaviv_mm_show(struct drm_device *dev, struct seq_file *m)
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{
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int ret;
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read_lock(&dev->vma_offset_manager->vm_lock);
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ret = drm_mm_dump_table(m, &dev->vma_offset_manager->vm_addr_space_mm);
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read_unlock(&dev->vma_offset_manager->vm_lock);
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return ret;
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}
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static int etnaviv_mmu_show(struct etnaviv_gpu *gpu, struct seq_file *m)
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{
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seq_printf(m, "Active Objects (%s):\n", dev_name(gpu->dev));
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mutex_lock(&gpu->mmu->lock);
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drm_mm_dump_table(m, &gpu->mmu->mm);
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mutex_unlock(&gpu->mmu->lock);
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return 0;
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}
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static void etnaviv_buffer_dump(struct etnaviv_gpu *gpu, struct seq_file *m)
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{
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struct etnaviv_cmdbuf *buf = gpu->buffer;
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u32 size = buf->size;
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u32 *ptr = buf->vaddr;
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u32 i;
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seq_printf(m, "virt %p - phys 0x%llx - free 0x%08x\n",
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buf->vaddr, (u64)buf->paddr, size - buf->user_size);
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for (i = 0; i < size / 4; i++) {
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if (i && !(i % 4))
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seq_puts(m, "\n");
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if (i % 4 == 0)
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seq_printf(m, "\t0x%p: ", ptr + i);
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seq_printf(m, "%08x ", *(ptr + i));
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}
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seq_puts(m, "\n");
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}
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static int etnaviv_ring_show(struct etnaviv_gpu *gpu, struct seq_file *m)
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{
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seq_printf(m, "Ring Buffer (%s): ", dev_name(gpu->dev));
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mutex_lock(&gpu->lock);
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etnaviv_buffer_dump(gpu, m);
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mutex_unlock(&gpu->lock);
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return 0;
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}
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static int show_unlocked(struct seq_file *m, void *arg)
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{
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struct drm_info_node *node = (struct drm_info_node *) m->private;
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struct drm_device *dev = node->minor->dev;
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int (*show)(struct drm_device *dev, struct seq_file *m) =
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node->info_ent->data;
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return show(dev, m);
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}
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static int show_each_gpu(struct seq_file *m, void *arg)
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{
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struct drm_info_node *node = (struct drm_info_node *) m->private;
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struct drm_device *dev = node->minor->dev;
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struct etnaviv_drm_private *priv = dev->dev_private;
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struct etnaviv_gpu *gpu;
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int (*show)(struct etnaviv_gpu *gpu, struct seq_file *m) =
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node->info_ent->data;
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unsigned int i;
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int ret = 0;
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for (i = 0; i < ETNA_MAX_PIPES; i++) {
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gpu = priv->gpu[i];
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if (!gpu)
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continue;
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ret = show(gpu, m);
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if (ret < 0)
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break;
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}
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return ret;
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}
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static struct drm_info_list etnaviv_debugfs_list[] = {
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{"gpu", show_each_gpu, 0, etnaviv_gpu_debugfs},
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{"gem", show_unlocked, 0, etnaviv_gem_show},
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{ "mm", show_unlocked, 0, etnaviv_mm_show },
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{"mmu", show_each_gpu, 0, etnaviv_mmu_show},
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{"ring", show_each_gpu, 0, etnaviv_ring_show},
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};
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static int etnaviv_debugfs_init(struct drm_minor *minor)
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{
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struct drm_device *dev = minor->dev;
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int ret;
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ret = drm_debugfs_create_files(etnaviv_debugfs_list,
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ARRAY_SIZE(etnaviv_debugfs_list),
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minor->debugfs_root, minor);
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if (ret) {
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dev_err(dev->dev, "could not install etnaviv_debugfs_list\n");
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return ret;
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}
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return ret;
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}
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static void etnaviv_debugfs_cleanup(struct drm_minor *minor)
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{
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drm_debugfs_remove_files(etnaviv_debugfs_list,
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ARRAY_SIZE(etnaviv_debugfs_list), minor);
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}
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#endif
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/*
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* DRM ioctls:
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*/
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static int etnaviv_ioctl_get_param(struct drm_device *dev, void *data,
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struct drm_file *file)
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{
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struct etnaviv_drm_private *priv = dev->dev_private;
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struct drm_etnaviv_param *args = data;
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struct etnaviv_gpu *gpu;
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if (args->pipe >= ETNA_MAX_PIPES)
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return -EINVAL;
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gpu = priv->gpu[args->pipe];
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if (!gpu)
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return -ENXIO;
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return etnaviv_gpu_get_param(gpu, args->param, &args->value);
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}
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static int etnaviv_ioctl_gem_new(struct drm_device *dev, void *data,
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struct drm_file *file)
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{
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struct drm_etnaviv_gem_new *args = data;
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if (args->flags & ~(ETNA_BO_CACHED | ETNA_BO_WC | ETNA_BO_UNCACHED |
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ETNA_BO_FORCE_MMU))
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return -EINVAL;
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return etnaviv_gem_new_handle(dev, file, args->size,
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args->flags, &args->handle);
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}
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#define TS(t) ((struct timespec){ \
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.tv_sec = (t).tv_sec, \
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.tv_nsec = (t).tv_nsec \
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})
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static int etnaviv_ioctl_gem_cpu_prep(struct drm_device *dev, void *data,
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struct drm_file *file)
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{
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struct drm_etnaviv_gem_cpu_prep *args = data;
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struct drm_gem_object *obj;
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int ret;
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if (args->op & ~(ETNA_PREP_READ | ETNA_PREP_WRITE | ETNA_PREP_NOSYNC))
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return -EINVAL;
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obj = drm_gem_object_lookup(dev, file, args->handle);
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if (!obj)
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return -ENOENT;
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ret = etnaviv_gem_cpu_prep(obj, args->op, &TS(args->timeout));
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drm_gem_object_unreference_unlocked(obj);
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return ret;
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}
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static int etnaviv_ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
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struct drm_file *file)
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{
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struct drm_etnaviv_gem_cpu_fini *args = data;
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struct drm_gem_object *obj;
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int ret;
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if (args->flags)
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return -EINVAL;
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obj = drm_gem_object_lookup(dev, file, args->handle);
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if (!obj)
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return -ENOENT;
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ret = etnaviv_gem_cpu_fini(obj);
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drm_gem_object_unreference_unlocked(obj);
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return ret;
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}
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static int etnaviv_ioctl_gem_info(struct drm_device *dev, void *data,
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struct drm_file *file)
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{
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struct drm_etnaviv_gem_info *args = data;
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struct drm_gem_object *obj;
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int ret;
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if (args->pad)
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return -EINVAL;
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obj = drm_gem_object_lookup(dev, file, args->handle);
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if (!obj)
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return -ENOENT;
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ret = etnaviv_gem_mmap_offset(obj, &args->offset);
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drm_gem_object_unreference_unlocked(obj);
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return ret;
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}
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static int etnaviv_ioctl_wait_fence(struct drm_device *dev, void *data,
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struct drm_file *file)
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{
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struct drm_etnaviv_wait_fence *args = data;
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struct etnaviv_drm_private *priv = dev->dev_private;
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struct timespec *timeout = &TS(args->timeout);
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struct etnaviv_gpu *gpu;
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if (args->flags & ~(ETNA_WAIT_NONBLOCK))
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return -EINVAL;
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if (args->pipe >= ETNA_MAX_PIPES)
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return -EINVAL;
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gpu = priv->gpu[args->pipe];
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if (!gpu)
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return -ENXIO;
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if (args->flags & ETNA_WAIT_NONBLOCK)
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timeout = NULL;
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return etnaviv_gpu_wait_fence_interruptible(gpu, args->fence,
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timeout);
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}
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static int etnaviv_ioctl_gem_userptr(struct drm_device *dev, void *data,
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struct drm_file *file)
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{
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struct drm_etnaviv_gem_userptr *args = data;
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int access;
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if (args->flags & ~(ETNA_USERPTR_READ|ETNA_USERPTR_WRITE) ||
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args->flags == 0)
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return -EINVAL;
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if (offset_in_page(args->user_ptr | args->user_size) ||
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(uintptr_t)args->user_ptr != args->user_ptr ||
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(u32)args->user_size != args->user_size ||
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args->user_ptr & ~PAGE_MASK)
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return -EINVAL;
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if (args->flags & ETNA_USERPTR_WRITE)
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access = VERIFY_WRITE;
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else
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access = VERIFY_READ;
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if (!access_ok(access, (void __user *)(unsigned long)args->user_ptr,
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args->user_size))
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return -EFAULT;
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return etnaviv_gem_new_userptr(dev, file, args->user_ptr,
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args->user_size, args->flags,
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&args->handle);
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}
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static int etnaviv_ioctl_gem_wait(struct drm_device *dev, void *data,
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struct drm_file *file)
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{
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struct etnaviv_drm_private *priv = dev->dev_private;
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struct drm_etnaviv_gem_wait *args = data;
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struct timespec *timeout = &TS(args->timeout);
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struct drm_gem_object *obj;
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struct etnaviv_gpu *gpu;
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int ret;
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if (args->flags & ~(ETNA_WAIT_NONBLOCK))
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return -EINVAL;
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if (args->pipe >= ETNA_MAX_PIPES)
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return -EINVAL;
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gpu = priv->gpu[args->pipe];
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if (!gpu)
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return -ENXIO;
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obj = drm_gem_object_lookup(dev, file, args->handle);
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if (!obj)
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return -ENOENT;
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if (args->flags & ETNA_WAIT_NONBLOCK)
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timeout = NULL;
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ret = etnaviv_gem_wait_bo(gpu, obj, timeout);
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drm_gem_object_unreference_unlocked(obj);
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return ret;
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}
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static const struct drm_ioctl_desc etnaviv_ioctls[] = {
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#define ETNA_IOCTL(n, func, flags) \
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DRM_IOCTL_DEF_DRV(ETNAVIV_##n, etnaviv_ioctl_##func, flags)
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ETNA_IOCTL(GET_PARAM, get_param, DRM_AUTH|DRM_RENDER_ALLOW),
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ETNA_IOCTL(GEM_NEW, gem_new, DRM_AUTH|DRM_RENDER_ALLOW),
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ETNA_IOCTL(GEM_INFO, gem_info, DRM_AUTH|DRM_RENDER_ALLOW),
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ETNA_IOCTL(GEM_CPU_PREP, gem_cpu_prep, DRM_AUTH|DRM_RENDER_ALLOW),
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ETNA_IOCTL(GEM_CPU_FINI, gem_cpu_fini, DRM_AUTH|DRM_RENDER_ALLOW),
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ETNA_IOCTL(GEM_SUBMIT, gem_submit, DRM_AUTH|DRM_RENDER_ALLOW),
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ETNA_IOCTL(WAIT_FENCE, wait_fence, DRM_AUTH|DRM_RENDER_ALLOW),
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ETNA_IOCTL(GEM_USERPTR, gem_userptr, DRM_AUTH|DRM_RENDER_ALLOW),
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ETNA_IOCTL(GEM_WAIT, gem_wait, DRM_AUTH|DRM_RENDER_ALLOW),
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};
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static const struct vm_operations_struct vm_ops = {
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.fault = etnaviv_gem_fault,
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.open = drm_gem_vm_open,
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.close = drm_gem_vm_close,
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};
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static const struct file_operations fops = {
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.owner = THIS_MODULE,
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.open = drm_open,
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.release = drm_release,
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.unlocked_ioctl = drm_ioctl,
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#ifdef CONFIG_COMPAT
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.compat_ioctl = drm_compat_ioctl,
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#endif
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.poll = drm_poll,
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.read = drm_read,
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.llseek = no_llseek,
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.mmap = etnaviv_gem_mmap,
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};
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static struct drm_driver etnaviv_drm_driver = {
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.driver_features = DRIVER_HAVE_IRQ |
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DRIVER_GEM |
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DRIVER_PRIME |
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DRIVER_RENDER,
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.open = etnaviv_open,
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.preclose = etnaviv_preclose,
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.set_busid = drm_platform_set_busid,
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.gem_free_object = etnaviv_gem_free_object,
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.gem_vm_ops = &vm_ops,
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.prime_handle_to_fd = drm_gem_prime_handle_to_fd,
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.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
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.gem_prime_export = drm_gem_prime_export,
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.gem_prime_import = drm_gem_prime_import,
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.gem_prime_pin = etnaviv_gem_prime_pin,
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.gem_prime_unpin = etnaviv_gem_prime_unpin,
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.gem_prime_get_sg_table = etnaviv_gem_prime_get_sg_table,
|
|
.gem_prime_import_sg_table = etnaviv_gem_prime_import_sg_table,
|
|
.gem_prime_vmap = etnaviv_gem_prime_vmap,
|
|
.gem_prime_vunmap = etnaviv_gem_prime_vunmap,
|
|
#ifdef CONFIG_DEBUG_FS
|
|
.debugfs_init = etnaviv_debugfs_init,
|
|
.debugfs_cleanup = etnaviv_debugfs_cleanup,
|
|
#endif
|
|
.ioctls = etnaviv_ioctls,
|
|
.num_ioctls = DRM_ETNAVIV_NUM_IOCTLS,
|
|
.fops = &fops,
|
|
.name = "etnaviv",
|
|
.desc = "etnaviv DRM",
|
|
.date = "20151214",
|
|
.major = 1,
|
|
.minor = 0,
|
|
};
|
|
|
|
/*
|
|
* Platform driver:
|
|
*/
|
|
static int etnaviv_bind(struct device *dev)
|
|
{
|
|
struct etnaviv_drm_private *priv;
|
|
struct drm_device *drm;
|
|
int ret;
|
|
|
|
drm = drm_dev_alloc(&etnaviv_drm_driver, dev);
|
|
if (!drm)
|
|
return -ENOMEM;
|
|
|
|
drm->platformdev = to_platform_device(dev);
|
|
|
|
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
|
|
if (!priv) {
|
|
dev_err(dev, "failed to allocate private data\n");
|
|
ret = -ENOMEM;
|
|
goto out_unref;
|
|
}
|
|
drm->dev_private = priv;
|
|
|
|
priv->wq = alloc_ordered_workqueue("etnaviv", 0);
|
|
if (!priv->wq) {
|
|
ret = -ENOMEM;
|
|
goto out_wq;
|
|
}
|
|
|
|
mutex_init(&priv->gem_lock);
|
|
INIT_LIST_HEAD(&priv->gem_list);
|
|
priv->num_gpus = 0;
|
|
|
|
dev_set_drvdata(dev, drm);
|
|
|
|
ret = component_bind_all(dev, drm);
|
|
if (ret < 0)
|
|
goto out_bind;
|
|
|
|
load_gpu(drm);
|
|
|
|
ret = drm_dev_register(drm, 0);
|
|
if (ret)
|
|
goto out_register;
|
|
|
|
return 0;
|
|
|
|
out_register:
|
|
component_unbind_all(dev, drm);
|
|
out_bind:
|
|
flush_workqueue(priv->wq);
|
|
destroy_workqueue(priv->wq);
|
|
out_wq:
|
|
kfree(priv);
|
|
out_unref:
|
|
drm_dev_unref(drm);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void etnaviv_unbind(struct device *dev)
|
|
{
|
|
struct drm_device *drm = dev_get_drvdata(dev);
|
|
struct etnaviv_drm_private *priv = drm->dev_private;
|
|
|
|
drm_dev_unregister(drm);
|
|
|
|
flush_workqueue(priv->wq);
|
|
destroy_workqueue(priv->wq);
|
|
|
|
component_unbind_all(dev, drm);
|
|
|
|
drm->dev_private = NULL;
|
|
kfree(priv);
|
|
|
|
drm_put_dev(drm);
|
|
}
|
|
|
|
static const struct component_master_ops etnaviv_master_ops = {
|
|
.bind = etnaviv_bind,
|
|
.unbind = etnaviv_unbind,
|
|
};
|
|
|
|
static int compare_of(struct device *dev, void *data)
|
|
{
|
|
struct device_node *np = data;
|
|
|
|
return dev->of_node == np;
|
|
}
|
|
|
|
static int compare_str(struct device *dev, void *data)
|
|
{
|
|
return !strcmp(dev_name(dev), data);
|
|
}
|
|
|
|
static int etnaviv_pdev_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct device_node *node = dev->of_node;
|
|
struct component_match *match = NULL;
|
|
|
|
dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
|
|
|
|
if (node) {
|
|
struct device_node *core_node;
|
|
int i;
|
|
|
|
for (i = 0; ; i++) {
|
|
core_node = of_parse_phandle(node, "cores", i);
|
|
if (!core_node)
|
|
break;
|
|
|
|
component_match_add(&pdev->dev, &match, compare_of,
|
|
core_node);
|
|
of_node_put(core_node);
|
|
}
|
|
} else if (dev->platform_data) {
|
|
char **names = dev->platform_data;
|
|
unsigned i;
|
|
|
|
for (i = 0; names[i]; i++)
|
|
component_match_add(dev, &match, compare_str, names[i]);
|
|
}
|
|
|
|
return component_master_add_with_match(dev, &etnaviv_master_ops, match);
|
|
}
|
|
|
|
static int etnaviv_pdev_remove(struct platform_device *pdev)
|
|
{
|
|
component_master_del(&pdev->dev, &etnaviv_master_ops);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id dt_match[] = {
|
|
{ .compatible = "fsl,imx-gpu-subsystem" },
|
|
{ .compatible = "marvell,dove-gpu-subsystem" },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, dt_match);
|
|
|
|
static struct platform_driver etnaviv_platform_driver = {
|
|
.probe = etnaviv_pdev_probe,
|
|
.remove = etnaviv_pdev_remove,
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "etnaviv",
|
|
.of_match_table = dt_match,
|
|
},
|
|
};
|
|
|
|
static int __init etnaviv_init(void)
|
|
{
|
|
int ret;
|
|
|
|
etnaviv_validate_init();
|
|
|
|
ret = platform_driver_register(&etnaviv_gpu_driver);
|
|
if (ret != 0)
|
|
return ret;
|
|
|
|
ret = platform_driver_register(&etnaviv_platform_driver);
|
|
if (ret != 0)
|
|
platform_driver_unregister(&etnaviv_gpu_driver);
|
|
|
|
return ret;
|
|
}
|
|
module_init(etnaviv_init);
|
|
|
|
static void __exit etnaviv_exit(void)
|
|
{
|
|
platform_driver_unregister(&etnaviv_gpu_driver);
|
|
platform_driver_unregister(&etnaviv_platform_driver);
|
|
}
|
|
module_exit(etnaviv_exit);
|
|
|
|
MODULE_AUTHOR("Christian Gmeiner <christian.gmeiner@gmail.com>");
|
|
MODULE_AUTHOR("Russell King <rmk+kernel@arm.linux.org.uk>");
|
|
MODULE_AUTHOR("Lucas Stach <l.stach@pengutronix.de>");
|
|
MODULE_DESCRIPTION("etnaviv DRM Driver");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_ALIAS("platform:etnaviv");
|