From: The etnaviv authors dri-devel@lists.freedesktop.org
This adds the etnaviv DRM core driver and hooks it up in the Kconfig and Makefile.
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 --- drivers/gpu/drm/Kconfig | 2 + drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/etnaviv/Kconfig | 20 + drivers/gpu/drm/etnaviv/Makefile | 14 + drivers/gpu/drm/etnaviv/etnaviv_drv.c | 707 ++++++++++++++++++++++++++++++++++ drivers/gpu/drm/etnaviv/etnaviv_drv.h | 161 ++++++++ 6 files changed, 905 insertions(+) create mode 100644 drivers/gpu/drm/etnaviv/Kconfig create mode 100644 drivers/gpu/drm/etnaviv/Makefile create mode 100644 drivers/gpu/drm/etnaviv/etnaviv_drv.c create mode 100644 drivers/gpu/drm/etnaviv/etnaviv_drv.h
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index c4bf9a1cf4a6..b02ac62f5863 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -266,3 +266,5 @@ source "drivers/gpu/drm/amd/amdkfd/Kconfig" source "drivers/gpu/drm/imx/Kconfig"
source "drivers/gpu/drm/vc4/Kconfig" + +source "drivers/gpu/drm/etnaviv/Kconfig" diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 1e9ff4c3e3db..f858aa25fbb2 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -75,3 +75,4 @@ obj-y += i2c/ obj-y += panel/ obj-y += bridge/ obj-$(CONFIG_DRM_FSL_DCU) += fsl-dcu/ +obj-$(CONFIG_DRM_ETNAVIV) += etnaviv/ diff --git a/drivers/gpu/drm/etnaviv/Kconfig b/drivers/gpu/drm/etnaviv/Kconfig new file mode 100644 index 000000000000..2cde7a5442fb --- /dev/null +++ b/drivers/gpu/drm/etnaviv/Kconfig @@ -0,0 +1,20 @@ + +config DRM_ETNAVIV + tristate "ETNAVIV (DRM support for Vivante GPU IP cores)" + depends on DRM + depends on ARCH_MXC || ARCH_DOVE + select SHMEM + select TMPFS + select IOMMU_API + select IOMMU_SUPPORT + select WANT_DEV_COREDUMP + help + DRM driver for Vivante GPUs. + +config DRM_ETNAVIV_REGISTER_LOGGING + bool "enable ETNAVIV register logging" + depends on DRM_ETNAVIV + help + Compile in support for logging register reads/writes in a format + that can be parsed by envytools demsm tool. If enabled, register + logging can be switched on via etnaviv.reglog=y module param. diff --git a/drivers/gpu/drm/etnaviv/Makefile b/drivers/gpu/drm/etnaviv/Makefile new file mode 100644 index 000000000000..1086e9876f91 --- /dev/null +++ b/drivers/gpu/drm/etnaviv/Makefile @@ -0,0 +1,14 @@ +etnaviv-y := \ + etnaviv_buffer.o \ + etnaviv_cmd_parser.o \ + etnaviv_drv.o \ + etnaviv_dump.o \ + etnaviv_gem_prime.o \ + etnaviv_gem_submit.o \ + etnaviv_gem.o \ + etnaviv_gpu.o \ + etnaviv_iommu_v2.o \ + etnaviv_iommu.o \ + etnaviv_mmu.o + +obj-$(CONFIG_DRM_ETNAVIV) += etnaviv.o diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c new file mode 100644 index 000000000000..f9cb812750fc --- /dev/null +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c @@ -0,0 +1,707 @@ +/* + * Copyright (C) 2015 Etnaviv Project + * + * 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/component.h> +#include <linux/of_platform.h> + +#include "etnaviv_drv.h" +#include "etnaviv_gpu.h" +#include "etnaviv_gem.h" +#include "etnaviv_mmu.h" +#include "etnaviv_gem.h" + +#ifdef CONFIG_DRM_ETNAVIV_REGISTER_LOGGING +static bool reglog; +MODULE_PARM_DESC(reglog, "Enable register read/write logging"); +module_param(reglog, bool, 0600); +#else +#define reglog 0 +#endif + +void __iomem *etnaviv_ioremap(struct platform_device *pdev, const char *name, + const char *dbgname) +{ + struct resource *res; + void __iomem *ptr; + + if (name) + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name); + else + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + + ptr = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(ptr)) { + dev_err(&pdev->dev, "failed to ioremap %s: %ld\n", name, + PTR_ERR(ptr)); + return ptr; + } + + if (reglog) + dev_printk(KERN_DEBUG, &pdev->dev, "IO:region %s 0x%p %08zx\n", + dbgname, ptr, (size_t)resource_size(res)); + + return ptr; +} + +void etnaviv_writel(u32 data, void __iomem *addr) +{ + if (reglog) + printk(KERN_DEBUG "IO:W %p %08x\n", addr, data); + + writel(data, addr); +} + +u32 etnaviv_readl(const void __iomem *addr) +{ + u32 val = readl(addr); + + if (reglog) + printk(KERN_DEBUG "IO:R %p %08x\n", addr, val); + + return val; +} + +/* + * DRM operations: + */ + + +static void load_gpu(struct drm_device *dev) +{ + struct etnaviv_drm_private *priv = dev->dev_private; + unsigned int i; + + for (i = 0; i < ETNA_MAX_PIPES; i++) { + struct etnaviv_gpu *g = priv->gpu[i]; + + if (g) { + int ret; + + ret = etnaviv_gpu_init(g); + if (ret) { + dev_err(g->dev, "hw init failed: %d\n", ret); + priv->gpu[i] = NULL; + } + } + } +} + +static int etnaviv_open(struct drm_device *dev, struct drm_file *file) +{ + struct etnaviv_file_private *ctx; + + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + file->driver_priv = ctx; + + return 0; +} + +static void etnaviv_preclose(struct drm_device *dev, struct drm_file *file) +{ + struct etnaviv_drm_private *priv = dev->dev_private; + struct etnaviv_file_private *ctx = file->driver_priv; + unsigned int i; + + for (i = 0; i < ETNA_MAX_PIPES; i++) { + struct etnaviv_gpu *gpu = priv->gpu[i]; + + if (gpu) { + mutex_lock(&gpu->lock); + if (gpu->lastctx == ctx) + gpu->lastctx = NULL; + mutex_unlock(&gpu->lock); + } + } + + kfree(ctx); +} + +/* + * DRM debugfs: + */ + +#ifdef CONFIG_DEBUG_FS +static int etnaviv_gem_show(struct drm_device *dev, struct seq_file *m) +{ + struct etnaviv_drm_private *priv = dev->dev_private; + + etnaviv_gem_describe_objects(priv, m); + + return 0; +} + +static int etnaviv_mm_show(struct drm_device *dev, struct seq_file *m) +{ + int ret; + + read_lock(&dev->vma_offset_manager->vm_lock); + ret = drm_mm_dump_table(m, &dev->vma_offset_manager->vm_addr_space_mm); + read_unlock(&dev->vma_offset_manager->vm_lock); + + return ret; +} + +static int etnaviv_mmu_show(struct etnaviv_gpu *gpu, struct seq_file *m) +{ + seq_printf(m, "Active Objects (%s):\n", dev_name(gpu->dev)); + + mutex_lock(&gpu->mmu->lock); + drm_mm_dump_table(m, &gpu->mmu->mm); + mutex_unlock(&gpu->mmu->lock); + + return 0; +} + +static void etnaviv_buffer_dump(struct etnaviv_gpu *gpu, struct seq_file *m) +{ + struct etnaviv_cmdbuf *buf = gpu->buffer; + u32 size = buf->size; + u32 *ptr = buf->vaddr; + u32 i; + + seq_printf(m, "virt %p - phys 0x%llx - free 0x%08x\n", + buf->vaddr, (u64)buf->paddr, size - buf->user_size); + + for (i = 0; i < size / 4; i++) { + if (i && !(i % 4)) + seq_puts(m, "\n"); + if (i % 4 == 0) + seq_printf(m, "\t0x%p: ", ptr + i); + seq_printf(m, "%08x ", *(ptr + i)); + } + seq_puts(m, "\n"); +} + +static int etnaviv_ring_show(struct etnaviv_gpu *gpu, struct seq_file *m) +{ + seq_printf(m, "Ring Buffer (%s): ", dev_name(gpu->dev)); + + mutex_lock(&gpu->lock); + etnaviv_buffer_dump(gpu, m); + mutex_unlock(&gpu->lock); + + return 0; +} + +static int show_unlocked(struct seq_file *m, void *arg) +{ + struct drm_info_node *node = (struct drm_info_node *) m->private; + struct drm_device *dev = node->minor->dev; + int (*show)(struct drm_device *dev, struct seq_file *m) = + node->info_ent->data; + + return show(dev, m); +} + +static int show_each_gpu(struct seq_file *m, void *arg) +{ + struct drm_info_node *node = (struct drm_info_node *) m->private; + struct drm_device *dev = node->minor->dev; + struct etnaviv_drm_private *priv = dev->dev_private; + struct etnaviv_gpu *gpu; + int (*show)(struct etnaviv_gpu *gpu, struct seq_file *m) = + node->info_ent->data; + unsigned int i; + int ret = 0; + + for (i = 0; i < ETNA_MAX_PIPES; i++) { + gpu = priv->gpu[i]; + if (!gpu) + continue; + + ret = show(gpu, m); + if (ret < 0) + break; + } + + return ret; +} + +static struct drm_info_list etnaviv_debugfs_list[] = { + {"gpu", show_each_gpu, 0, etnaviv_gpu_debugfs}, + {"gem", show_unlocked, 0, etnaviv_gem_show}, + { "mm", show_unlocked, 0, etnaviv_mm_show }, + {"mmu", show_each_gpu, 0, etnaviv_mmu_show}, + {"ring", show_each_gpu, 0, etnaviv_ring_show}, +}; + +static int etnaviv_debugfs_init(struct drm_minor *minor) +{ + struct drm_device *dev = minor->dev; + int ret; + + ret = drm_debugfs_create_files(etnaviv_debugfs_list, + ARRAY_SIZE(etnaviv_debugfs_list), + minor->debugfs_root, minor); + + if (ret) { + dev_err(dev->dev, "could not install etnaviv_debugfs_list\n"); + return ret; + } + + return ret; +} + +static void etnaviv_debugfs_cleanup(struct drm_minor *minor) +{ + drm_debugfs_remove_files(etnaviv_debugfs_list, + ARRAY_SIZE(etnaviv_debugfs_list), minor); +} +#endif + +/* + * DRM ioctls: + */ + +static int etnaviv_ioctl_get_param(struct drm_device *dev, void *data, + struct drm_file *file) +{ + struct etnaviv_drm_private *priv = dev->dev_private; + struct drm_etnaviv_param *args = data; + struct etnaviv_gpu *gpu; + + if (args->pipe >= ETNA_MAX_PIPES) + return -EINVAL; + + gpu = priv->gpu[args->pipe]; + if (!gpu) + return -ENXIO; + + return etnaviv_gpu_get_param(gpu, args->param, &args->value); +} + +static int etnaviv_ioctl_gem_new(struct drm_device *dev, void *data, + struct drm_file *file) +{ + struct drm_etnaviv_gem_new *args = data; + + if (args->flags & ~(ETNA_BO_CACHED | ETNA_BO_WC | ETNA_BO_UNCACHED | + ETNA_BO_FORCE_MMU)) + return -EINVAL; + + return etnaviv_gem_new_handle(dev, file, args->size, + args->flags, &args->handle); +} + +#define TS(t) ((struct timespec){ \ + .tv_sec = (t).tv_sec, \ + .tv_nsec = (t).tv_nsec \ +}) + +static int etnaviv_ioctl_gem_cpu_prep(struct drm_device *dev, void *data, + struct drm_file *file) +{ + struct drm_etnaviv_gem_cpu_prep *args = data; + struct drm_gem_object *obj; + int ret; + + if (args->op & ~(ETNA_PREP_READ | ETNA_PREP_WRITE | ETNA_PREP_NOSYNC)) + return -EINVAL; + + obj = drm_gem_object_lookup(dev, file, args->handle); + if (!obj) + return -ENOENT; + + ret = etnaviv_gem_cpu_prep(obj, args->op, &TS(args->timeout)); + + drm_gem_object_unreference_unlocked(obj); + + return ret; +} + +static int etnaviv_ioctl_gem_cpu_fini(struct drm_device *dev, void *data, + struct drm_file *file) +{ + struct drm_etnaviv_gem_cpu_fini *args = data; + struct drm_gem_object *obj; + int ret; + + if (args->flags) + return -EINVAL; + + obj = drm_gem_object_lookup(dev, file, args->handle); + if (!obj) + return -ENOENT; + + ret = etnaviv_gem_cpu_fini(obj); + + drm_gem_object_unreference_unlocked(obj); + + return ret; +} + +static int etnaviv_ioctl_gem_info(struct drm_device *dev, void *data, + struct drm_file *file) +{ + struct drm_etnaviv_gem_info *args = data; + struct drm_gem_object *obj; + int ret; + + if (args->pad) + return -EINVAL; + + obj = drm_gem_object_lookup(dev, file, args->handle); + if (!obj) + return -ENOENT; + + ret = etnaviv_gem_mmap_offset(obj, &args->offset); + drm_gem_object_unreference_unlocked(obj); + + return ret; +} + +static int etnaviv_ioctl_wait_fence(struct drm_device *dev, void *data, + struct drm_file *file) +{ + struct drm_etnaviv_wait_fence *args = data; + struct etnaviv_drm_private *priv = dev->dev_private; + struct timespec *timeout = &TS(args->timeout); + struct etnaviv_gpu *gpu; + + if (args->flags & ~(ETNA_WAIT_NONBLOCK)) + return -EINVAL; + + if (args->pipe >= ETNA_MAX_PIPES) + return -EINVAL; + + gpu = priv->gpu[args->pipe]; + if (!gpu) + return -ENXIO; + + if (args->flags & ETNA_WAIT_NONBLOCK) + timeout = NULL; + + return etnaviv_gpu_wait_fence_interruptible(gpu, args->fence, + timeout); +} + +static int etnaviv_ioctl_gem_userptr(struct drm_device *dev, void *data, + struct drm_file *file) +{ + struct drm_etnaviv_gem_userptr *args = data; + int access; + + if (args->flags & ~(ETNA_USERPTR_READ|ETNA_USERPTR_WRITE) || + args->flags == 0) + return -EINVAL; + + if (offset_in_page(args->user_ptr | args->user_size) || + (uintptr_t)args->user_ptr != args->user_ptr || + (u32)args->user_size != args->user_size || + args->user_ptr & ~PAGE_MASK) + return -EINVAL; + + if (args->flags & ETNA_USERPTR_WRITE) + access = VERIFY_WRITE; + else + access = VERIFY_READ; + + if (!access_ok(access, (void __user *)(unsigned long)args->user_ptr, + args->user_size)) + return -EFAULT; + + return etnaviv_gem_new_userptr(dev, file, args->user_ptr, + args->user_size, args->flags, + &args->handle); +} + +static int etnaviv_ioctl_gem_wait(struct drm_device *dev, void *data, + struct drm_file *file) +{ + struct etnaviv_drm_private *priv = dev->dev_private; + struct drm_etnaviv_gem_wait *args = data; + struct timespec *timeout = &TS(args->timeout); + struct drm_gem_object *obj; + struct etnaviv_gpu *gpu; + int ret; + + if (args->flags & ~(ETNA_WAIT_NONBLOCK)) + return -EINVAL; + + if (args->pipe >= ETNA_MAX_PIPES) + return -EINVAL; + + gpu = priv->gpu[args->pipe]; + if (!gpu) + return -ENXIO; + + obj = drm_gem_object_lookup(dev, file, args->handle); + if (!obj) + return -ENOENT; + + if (args->flags & ETNA_WAIT_NONBLOCK) + timeout = NULL; + + ret = etnaviv_gem_wait_bo(gpu, obj, timeout); + + drm_gem_object_unreference_unlocked(obj); + + return ret; +} + +static const struct drm_ioctl_desc etnaviv_ioctls[] = { +#define ETNA_IOCTL(n, func, flags) \ + DRM_IOCTL_DEF_DRV(ETNAVIV_##n, etnaviv_ioctl_##func, flags) + ETNA_IOCTL(GET_PARAM, get_param, DRM_AUTH|DRM_RENDER_ALLOW), + ETNA_IOCTL(GEM_NEW, gem_new, DRM_AUTH|DRM_RENDER_ALLOW), + ETNA_IOCTL(GEM_INFO, gem_info, DRM_AUTH|DRM_RENDER_ALLOW), + ETNA_IOCTL(GEM_CPU_PREP, gem_cpu_prep, DRM_AUTH|DRM_RENDER_ALLOW), + ETNA_IOCTL(GEM_CPU_FINI, gem_cpu_fini, DRM_AUTH|DRM_RENDER_ALLOW), + ETNA_IOCTL(GEM_SUBMIT, gem_submit, DRM_AUTH|DRM_RENDER_ALLOW), + ETNA_IOCTL(WAIT_FENCE, wait_fence, DRM_AUTH|DRM_RENDER_ALLOW), + ETNA_IOCTL(GEM_USERPTR, gem_userptr, DRM_AUTH|DRM_RENDER_ALLOW), + ETNA_IOCTL(GEM_WAIT, gem_wait, DRM_AUTH|DRM_RENDER_ALLOW), +}; + +static const struct vm_operations_struct vm_ops = { + .fault = etnaviv_gem_fault, + .open = drm_gem_vm_open, + .close = drm_gem_vm_close, +}; + +static const struct file_operations fops = { + .owner = THIS_MODULE, + .open = drm_open, + .release = drm_release, + .unlocked_ioctl = drm_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif + .poll = drm_poll, + .read = drm_read, + .llseek = no_llseek, + .mmap = etnaviv_gem_mmap, +}; + +static struct drm_driver etnaviv_drm_driver = { + .driver_features = DRIVER_HAVE_IRQ | + DRIVER_GEM | + DRIVER_PRIME | + DRIVER_RENDER, + .open = etnaviv_open, + .preclose = etnaviv_preclose, + .set_busid = drm_platform_set_busid, + .gem_free_object = etnaviv_gem_free_object, + .gem_vm_ops = &vm_ops, + .prime_handle_to_fd = drm_gem_prime_handle_to_fd, + .prime_fd_to_handle = drm_gem_prime_fd_to_handle, + .gem_prime_export = drm_gem_prime_export, + .gem_prime_import = drm_gem_prime_import, + .gem_prime_pin = etnaviv_gem_prime_pin, + .gem_prime_unpin = etnaviv_gem_prime_unpin, + .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 = "20151126", + .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"); diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.h b/drivers/gpu/drm/etnaviv/etnaviv_drv.h new file mode 100644 index 000000000000..d6bd438bd5be --- /dev/null +++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.h @@ -0,0 +1,161 @@ +/* + * Copyright (C) 2015 Etnaviv Project + * + * 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/. + */ + +#ifndef __ETNAVIV_DRV_H__ +#define __ETNAVIV_DRV_H__ + +#include <linux/kernel.h> +#include <linux/clk.h> +#include <linux/cpufreq.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/pm.h> +#include <linux/pm_runtime.h> +#include <linux/slab.h> +#include <linux/list.h> +#include <linux/iommu.h> +#include <linux/types.h> +#include <linux/sizes.h> + +#include <drm/drmP.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_fb_helper.h> +#include <drm/drm_gem.h> +#include <drm/etnaviv_drm.h> + +struct etnaviv_cmdbuf; +struct etnaviv_gpu; +struct etnaviv_mmu; +struct etnaviv_gem_object; +struct etnaviv_gem_submit; + +struct etnaviv_file_private { + /* currently we don't do anything useful with this.. but when + * per-context address spaces are supported we'd keep track of + * the context's page-tables here. + */ + int dummy; +}; + +struct etnaviv_drm_private { + int num_gpus; + struct etnaviv_gpu *gpu[ETNA_MAX_PIPES]; + + /* list of GEM objects: */ + struct mutex gem_lock; + struct list_head gem_list; + + struct workqueue_struct *wq; +}; + +static inline void etnaviv_queue_work(struct drm_device *dev, + struct work_struct *w) +{ + struct etnaviv_drm_private *priv = dev->dev_private; + + queue_work(priv->wq, w); +} + +int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, + struct drm_file *file); + +int etnaviv_gem_mmap(struct file *filp, struct vm_area_struct *vma); +int etnaviv_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf); +int etnaviv_gem_mmap_offset(struct drm_gem_object *obj, u64 *offset); +int etnaviv_gem_get_iova(struct etnaviv_gpu *gpu, + struct drm_gem_object *obj, u32 *iova); +void etnaviv_gem_put_iova(struct etnaviv_gpu *gpu, struct drm_gem_object *obj); +struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj); +void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj); +void etnaviv_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr); +struct drm_gem_object *etnaviv_gem_prime_import_sg_table(struct drm_device *dev, + struct dma_buf_attachment *attach, struct sg_table *sg); +int etnaviv_gem_prime_pin(struct drm_gem_object *obj); +void etnaviv_gem_prime_unpin(struct drm_gem_object *obj); +void *etnaviv_gem_vaddr(struct drm_gem_object *obj); +int etnaviv_gem_cpu_prep(struct drm_gem_object *obj, u32 op, + struct timespec *timeout); +int etnaviv_gem_cpu_fini(struct drm_gem_object *obj); +void etnaviv_gem_free_object(struct drm_gem_object *obj); +int etnaviv_gem_new_handle(struct drm_device *dev, struct drm_file *file, + u32 size, u32 flags, u32 *handle); +struct drm_gem_object *etnaviv_gem_new_locked(struct drm_device *dev, + u32 size, u32 flags); +struct drm_gem_object *etnaviv_gem_new(struct drm_device *dev, + u32 size, u32 flags); +int etnaviv_gem_new_userptr(struct drm_device *dev, struct drm_file *file, + uintptr_t ptr, u32 size, u32 flags, u32 *handle); +u16 etnaviv_buffer_init(struct etnaviv_gpu *gpu); +void etnaviv_buffer_end(struct etnaviv_gpu *gpu); +void etnaviv_buffer_queue(struct etnaviv_gpu *gpu, unsigned int event, + struct etnaviv_cmdbuf *cmdbuf); +void etnaviv_validate_init(void); +bool etnaviv_cmd_validate_one(struct etnaviv_gpu *gpu, + u32 *stream, unsigned int size, + struct drm_etnaviv_gem_submit_reloc *relocs, unsigned int reloc_size); + +#ifdef CONFIG_DEBUG_FS +void etnaviv_gem_describe_objects(struct etnaviv_drm_private *priv, + struct seq_file *m); +#endif + +void __iomem *etnaviv_ioremap(struct platform_device *pdev, const char *name, + const char *dbgname); +void etnaviv_writel(u32 data, void __iomem *addr); +u32 etnaviv_readl(const void __iomem *addr); + +#define DBG(fmt, ...) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) +#define VERB(fmt, ...) if (0) DRM_DEBUG(fmt"\n", ##__VA_ARGS__) + +/* + * Return the storage size of a structure with a variable length array. + * The array is nelem elements of elem_size, where the base structure + * is defined by base. If the size overflows size_t, return zero. + */ +static inline size_t size_vstruct(size_t nelem, size_t elem_size, size_t base) +{ + if (elem_size && nelem > (SIZE_MAX - base) / elem_size) + return 0; + return base + nelem * elem_size; +} + +/* returns true if fence a comes after fence b */ +static inline bool fence_after(u32 a, u32 b) +{ + return (s32)(a - b) > 0; +} + +static inline bool fence_after_eq(u32 a, u32 b) +{ + return (s32)(a - b) >= 0; +} + +static inline unsigned long etnaviv_timeout_to_jiffies( + const struct timespec *timeout) +{ + unsigned long timeout_jiffies = timespec_to_jiffies(timeout); + unsigned long start_jiffies = jiffies; + unsigned long remaining_jiffies; + + if (time_after(start_jiffies, timeout_jiffies)) + remaining_jiffies = 0; + else + remaining_jiffies = timeout_jiffies - start_jiffies; + + return remaining_jiffies; +} + +#endif /* __ETNAVIV_DRV_H__ */