![Dave Airlie](/assets/img/avatar_default.png)
UAPI Changes: - Add DRM_MODE_TYPE_USERDEF for video modes specified in cmdline. Cross-subsystem Changes: - Assorted devicetree binding updates. - Add might_sleep() to dma_fence_wait(). - Fix fbdev's get_user_pages_fast() handling, and use pin_user_pages. - Small cleanup with IS_BUILTIN in video/fbdev drivers. - Fix video/hdmi coding style for infoframe size. Core Changes: - Silence vblank output during init. - Fix DP-MST corruption during send msg timeout. - Clear leak in drm_gem_objecs_lookup(). - Make newlines work with force connector attribute. - Fix module refcounting error in drm_encoder_slave, and use new i2c api. - Header fix for drm_managed.c - More struct_mutex removal for !legacy drivers: - Remove gem_free_object() - Removal of drm_gem_object_put_unlocked(). - Show current->comm alongside pid in debug printfs. - Add drm_client_modeset_check() + drm_client_framebuffer_flush(). - Replace drm_fb_swab16 with drm_fb_swap that also supports 32-bits. - Remove mode->vrefresh, and compactify drm_display_mode. - Use drm_* macros for logging and warnings. - Add WARN when drm_gem_get_pages is used on a private obj. - Handle importing and imported dmabuf better in shmem helpers. - Small fix for drm/mm hole size comparison, and remove invalid entry optimization. - Add a drm/mm selftest. - Set DSI connector type for DSI panels. - Assorted small fixes and documentation updates. - Fix DDI I2C device registration for MST ports, and flushing on destroy. - Fix master_set return type, used by vmwgfx. - Make the drm_set/drop_master ioctl symmetrical. Driver Changes: Allow iommu in the sun4i driver and use it for sun8i. - Simplify backlight lookup for omap, amba-clcd and tilcdc. - Hold reg_lock for rockchip. - Add support for bridge gpio and lane reordering + polarity to ti-sn65dsi86, and fix clock choice. - Small assorted fixes to tilcdc, vc4, i915, omap, fbdev/sm712fb, fbdev/pxafb, console/newport_con, msm, virtio, udl, malidp, hdlcd, bridge/ti-sn65dsi86, panfrost. - Remove hw cursor support for mgag200, and use simple kms helper + shmem helpers. - Add support for KOE Allow iommu in the sun4i driver and use it for sun8i. - Simplify backlight lookup for omap, amba-clcd and tilcdc. - Hold reg_lock for rockchip. - Add support for bridge gpio and lane reordering + polarity to ti-sn65dsi86, and fix clock choice. - Small assorted fixes to tilcdc, vc4 (multiple), i915. - Remove hw cursor support for mgag200, and use simple kms helper + shmem helpers. - Add support for KOE TX26D202VM0BWA panel. - Use GEM CMA functions in arc, arm, atmel-hlcdc, fsi-dcu, hisilicon, imx, ingenic, komeda, malidp, mcde, meson, msxfb, rcar-du, shmobile, stm, sti, tilcdc, tve200, zte. - Remove gem_print_info. - Improve gem_create_object_helper so udl can use shmem helpers. - Convert vc4 dt bindings to schemas, and add clock properties. - Device initialization cleanups for mgag200. - Add a workaround to fix DP-MST short pulses handling on broken hardware in i915. - Allow build test compiling arm drivers. - Use managed pci functions in mgag200 and ast. - Use dev_groups in malidp. - Add per pixel alpha support for PX30 VOP in rockchip. - Silence deferred probe logs in panfrost. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEuXvWqAysSYEJGuVH/lWMcqZwE8MFAl7s11IACgkQ/lWMcqZw E8OYnQ/+K4ZGpU11t4IzXCyJYis2ZPYs/FlJ2BWXH89YhOckN1e1tq7uDBzUE8qK Hlz0gvH5C0WXR/PWqNglPXW7INwc0LtC8PSmvS4vvrZQBaJ2bvf19y7dROqJbR0E xTUje95eq+10H9TysCRTf1osIUuZIoR0gRna22pb+nplKVBkqsQPyPT21AWq4fN0 H/LQfKNfAAHtKwvfsMsuG2U+ZTyTYo7Xi6UP413WAqDmzhewnCm5plifM29m5LhB 9BmKk0/1pL3KzZuCQvcZw4kYUjXYsgoOqD4hkMAOLsjyf6Ad5zbPB5YTxNK0C+NU N04aHWvkRVl62A6rehgXdS5GJ3M4ORPDpIV9zQCVxMZV/886JLTGA1Wb+b3+umdk t5M40kzgYQTDqdSwFoCDCd1tFpEjnLbE7E+eM89AyzTPOxZowrVS0No1dJA3+ST/ g7JOdDu2Zg7VAar6zByow0pMppikZro9H1mpSnk+WHbYNF3dFmW3QHKRuxoRt+Ee l5G52LylwH3ZMPebGH9XB4cWtAUAHOsioe3CS/PKzGeUWNlUK29AqDCCBQmUdbcT HNm5/Yygdg3rRjkDBuUI0I/pifxMYvm+28eNfNGjwq5To9ABXPNONQCEBH6rke+S d1Z2nMmiVDf2MqhpkJppTKtHdMz13IGyZykXB7CdGnAu6k5s59c= =ZmKI -----END PGP SIGNATURE----- Merge tag 'drm-misc-next-2020-06-19' of git://anongit.freedesktop.org/drm/drm-misc into drm-next drm-misc-next for v5.9: UAPI Changes: - Add DRM_MODE_TYPE_USERDEF for video modes specified in cmdline. Cross-subsystem Changes: - Assorted devicetree binding updates. - Add might_sleep() to dma_fence_wait(). - Fix fbdev's get_user_pages_fast() handling, and use pin_user_pages. - Small cleanup with IS_BUILTIN in video/fbdev drivers. - Fix video/hdmi coding style for infoframe size. Core Changes: - Silence vblank output during init. - Fix DP-MST corruption during send msg timeout. - Clear leak in drm_gem_objecs_lookup(). - Make newlines work with force connector attribute. - Fix module refcounting error in drm_encoder_slave, and use new i2c api. - Header fix for drm_managed.c - More struct_mutex removal for !legacy drivers: - Remove gem_free_object() - Removal of drm_gem_object_put_unlocked(). - Show current->comm alongside pid in debug printfs. - Add drm_client_modeset_check() + drm_client_framebuffer_flush(). - Replace drm_fb_swab16 with drm_fb_swap that also supports 32-bits. - Remove mode->vrefresh, and compactify drm_display_mode. - Use drm_* macros for logging and warnings. - Add WARN when drm_gem_get_pages is used on a private obj. - Handle importing and imported dmabuf better in shmem helpers. - Small fix for drm/mm hole size comparison, and remove invalid entry optimization. - Add a drm/mm selftest. - Set DSI connector type for DSI panels. - Assorted small fixes and documentation updates. - Fix DDI I2C device registration for MST ports, and flushing on destroy. - Fix master_set return type, used by vmwgfx. - Make the drm_set/drop_master ioctl symmetrical. Driver Changes: Allow iommu in the sun4i driver and use it for sun8i. - Simplify backlight lookup for omap, amba-clcd and tilcdc. - Hold reg_lock for rockchip. - Add support for bridge gpio and lane reordering + polarity to ti-sn65dsi86, and fix clock choice. - Small assorted fixes to tilcdc, vc4, i915, omap, fbdev/sm712fb, fbdev/pxafb, console/newport_con, msm, virtio, udl, malidp, hdlcd, bridge/ti-sn65dsi86, panfrost. - Remove hw cursor support for mgag200, and use simple kms helper + shmem helpers. - Add support for KOE Allow iommu in the sun4i driver and use it for sun8i. - Simplify backlight lookup for omap, amba-clcd and tilcdc. - Hold reg_lock for rockchip. - Add support for bridge gpio and lane reordering + polarity to ti-sn65dsi86, and fix clock choice. - Small assorted fixes to tilcdc, vc4 (multiple), i915. - Remove hw cursor support for mgag200, and use simple kms helper + shmem helpers. - Add support for KOE TX26D202VM0BWA panel. - Use GEM CMA functions in arc, arm, atmel-hlcdc, fsi-dcu, hisilicon, imx, ingenic, komeda, malidp, mcde, meson, msxfb, rcar-du, shmobile, stm, sti, tilcdc, tve200, zte. - Remove gem_print_info. - Improve gem_create_object_helper so udl can use shmem helpers. - Convert vc4 dt bindings to schemas, and add clock properties. - Device initialization cleanups for mgag200. - Add a workaround to fix DP-MST short pulses handling on broken hardware in i915. - Allow build test compiling arm drivers. - Use managed pci functions in mgag200 and ast. - Use dev_groups in malidp. - Add per pixel alpha support for PX30 VOP in rockchip. - Silence deferred probe logs in panfrost. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/001cd9a6-405d-4e29-43d8-354f53ae4e8b@linux.intel.com
1387 lines
32 KiB
C
1387 lines
32 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2012 Avionic Design GmbH
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* Copyright (C) 2012-2016 NVIDIA CORPORATION. All rights reserved.
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*/
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#include <linux/bitops.h>
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#include <linux/host1x.h>
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#include <linux/idr.h>
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#include <linux/iommu.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_debugfs.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_fourcc.h>
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#include <drm/drm_ioctl.h>
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#include <drm/drm_prime.h>
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#include <drm/drm_vblank.h>
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#include "drm.h"
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#include "gem.h"
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#define DRIVER_NAME "tegra"
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#define DRIVER_DESC "NVIDIA Tegra graphics"
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#define DRIVER_DATE "20120330"
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#define DRIVER_MAJOR 0
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#define DRIVER_MINOR 0
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#define DRIVER_PATCHLEVEL 0
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#define CARVEOUT_SZ SZ_64M
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#define CDMA_GATHER_FETCHES_MAX_NB 16383
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struct tegra_drm_file {
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struct idr contexts;
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struct mutex lock;
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};
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static int tegra_atomic_check(struct drm_device *drm,
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struct drm_atomic_state *state)
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{
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int err;
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err = drm_atomic_helper_check(drm, state);
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if (err < 0)
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return err;
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return tegra_display_hub_atomic_check(drm, state);
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}
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static const struct drm_mode_config_funcs tegra_drm_mode_config_funcs = {
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.fb_create = tegra_fb_create,
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#ifdef CONFIG_DRM_FBDEV_EMULATION
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.output_poll_changed = drm_fb_helper_output_poll_changed,
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#endif
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.atomic_check = tegra_atomic_check,
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.atomic_commit = drm_atomic_helper_commit,
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};
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static void tegra_atomic_commit_tail(struct drm_atomic_state *old_state)
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{
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struct drm_device *drm = old_state->dev;
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struct tegra_drm *tegra = drm->dev_private;
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if (tegra->hub) {
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drm_atomic_helper_commit_modeset_disables(drm, old_state);
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tegra_display_hub_atomic_commit(drm, old_state);
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drm_atomic_helper_commit_planes(drm, old_state, 0);
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drm_atomic_helper_commit_modeset_enables(drm, old_state);
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drm_atomic_helper_commit_hw_done(old_state);
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drm_atomic_helper_wait_for_vblanks(drm, old_state);
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drm_atomic_helper_cleanup_planes(drm, old_state);
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} else {
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drm_atomic_helper_commit_tail_rpm(old_state);
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}
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}
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static const struct drm_mode_config_helper_funcs
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tegra_drm_mode_config_helpers = {
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.atomic_commit_tail = tegra_atomic_commit_tail,
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};
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static int tegra_drm_open(struct drm_device *drm, struct drm_file *filp)
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{
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struct tegra_drm_file *fpriv;
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fpriv = kzalloc(sizeof(*fpriv), GFP_KERNEL);
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if (!fpriv)
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return -ENOMEM;
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idr_init(&fpriv->contexts);
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mutex_init(&fpriv->lock);
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filp->driver_priv = fpriv;
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return 0;
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}
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static void tegra_drm_context_free(struct tegra_drm_context *context)
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{
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context->client->ops->close_channel(context);
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kfree(context);
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}
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static struct host1x_bo *
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host1x_bo_lookup(struct drm_file *file, u32 handle)
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{
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struct drm_gem_object *gem;
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struct tegra_bo *bo;
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gem = drm_gem_object_lookup(file, handle);
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if (!gem)
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return NULL;
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bo = to_tegra_bo(gem);
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return &bo->base;
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}
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static int host1x_reloc_copy_from_user(struct host1x_reloc *dest,
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struct drm_tegra_reloc __user *src,
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struct drm_device *drm,
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struct drm_file *file)
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{
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u32 cmdbuf, target;
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int err;
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err = get_user(cmdbuf, &src->cmdbuf.handle);
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if (err < 0)
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return err;
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err = get_user(dest->cmdbuf.offset, &src->cmdbuf.offset);
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if (err < 0)
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return err;
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err = get_user(target, &src->target.handle);
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if (err < 0)
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return err;
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err = get_user(dest->target.offset, &src->target.offset);
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if (err < 0)
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return err;
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err = get_user(dest->shift, &src->shift);
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if (err < 0)
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return err;
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dest->flags = HOST1X_RELOC_READ | HOST1X_RELOC_WRITE;
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dest->cmdbuf.bo = host1x_bo_lookup(file, cmdbuf);
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if (!dest->cmdbuf.bo)
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return -ENOENT;
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dest->target.bo = host1x_bo_lookup(file, target);
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if (!dest->target.bo)
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return -ENOENT;
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return 0;
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}
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int tegra_drm_submit(struct tegra_drm_context *context,
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struct drm_tegra_submit *args, struct drm_device *drm,
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struct drm_file *file)
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{
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struct host1x_client *client = &context->client->base;
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unsigned int num_cmdbufs = args->num_cmdbufs;
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unsigned int num_relocs = args->num_relocs;
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struct drm_tegra_cmdbuf __user *user_cmdbufs;
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struct drm_tegra_reloc __user *user_relocs;
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struct drm_tegra_syncpt __user *user_syncpt;
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struct drm_tegra_syncpt syncpt;
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struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
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struct drm_gem_object **refs;
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struct host1x_syncpt *sp;
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struct host1x_job *job;
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unsigned int num_refs;
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int err;
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user_cmdbufs = u64_to_user_ptr(args->cmdbufs);
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user_relocs = u64_to_user_ptr(args->relocs);
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user_syncpt = u64_to_user_ptr(args->syncpts);
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/* We don't yet support other than one syncpt_incr struct per submit */
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if (args->num_syncpts != 1)
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return -EINVAL;
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/* We don't yet support waitchks */
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if (args->num_waitchks != 0)
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return -EINVAL;
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job = host1x_job_alloc(context->channel, args->num_cmdbufs,
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args->num_relocs);
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if (!job)
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return -ENOMEM;
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job->num_relocs = args->num_relocs;
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job->client = client;
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job->class = client->class;
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job->serialize = true;
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/*
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* Track referenced BOs so that they can be unreferenced after the
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* submission is complete.
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*/
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num_refs = num_cmdbufs + num_relocs * 2;
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refs = kmalloc_array(num_refs, sizeof(*refs), GFP_KERNEL);
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if (!refs) {
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err = -ENOMEM;
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goto put;
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}
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/* reuse as an iterator later */
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num_refs = 0;
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while (num_cmdbufs) {
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struct drm_tegra_cmdbuf cmdbuf;
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struct host1x_bo *bo;
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struct tegra_bo *obj;
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u64 offset;
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if (copy_from_user(&cmdbuf, user_cmdbufs, sizeof(cmdbuf))) {
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err = -EFAULT;
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goto fail;
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}
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/*
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* The maximum number of CDMA gather fetches is 16383, a higher
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* value means the words count is malformed.
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*/
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if (cmdbuf.words > CDMA_GATHER_FETCHES_MAX_NB) {
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err = -EINVAL;
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goto fail;
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}
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bo = host1x_bo_lookup(file, cmdbuf.handle);
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if (!bo) {
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err = -ENOENT;
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goto fail;
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}
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offset = (u64)cmdbuf.offset + (u64)cmdbuf.words * sizeof(u32);
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obj = host1x_to_tegra_bo(bo);
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refs[num_refs++] = &obj->gem;
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/*
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* Gather buffer base address must be 4-bytes aligned,
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* unaligned offset is malformed and cause commands stream
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* corruption on the buffer address relocation.
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*/
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if (offset & 3 || offset > obj->gem.size) {
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err = -EINVAL;
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goto fail;
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}
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host1x_job_add_gather(job, bo, cmdbuf.words, cmdbuf.offset);
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num_cmdbufs--;
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user_cmdbufs++;
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}
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/* copy and resolve relocations from submit */
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while (num_relocs--) {
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struct host1x_reloc *reloc;
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struct tegra_bo *obj;
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err = host1x_reloc_copy_from_user(&job->relocs[num_relocs],
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&user_relocs[num_relocs], drm,
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file);
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if (err < 0)
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goto fail;
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reloc = &job->relocs[num_relocs];
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obj = host1x_to_tegra_bo(reloc->cmdbuf.bo);
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refs[num_refs++] = &obj->gem;
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/*
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* The unaligned cmdbuf offset will cause an unaligned write
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* during of the relocations patching, corrupting the commands
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* stream.
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*/
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if (reloc->cmdbuf.offset & 3 ||
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reloc->cmdbuf.offset >= obj->gem.size) {
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err = -EINVAL;
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goto fail;
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}
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obj = host1x_to_tegra_bo(reloc->target.bo);
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refs[num_refs++] = &obj->gem;
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if (reloc->target.offset >= obj->gem.size) {
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err = -EINVAL;
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goto fail;
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}
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}
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if (copy_from_user(&syncpt, user_syncpt, sizeof(syncpt))) {
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err = -EFAULT;
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goto fail;
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}
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/* check whether syncpoint ID is valid */
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sp = host1x_syncpt_get(host1x, syncpt.id);
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if (!sp) {
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err = -ENOENT;
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goto fail;
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}
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job->is_addr_reg = context->client->ops->is_addr_reg;
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job->is_valid_class = context->client->ops->is_valid_class;
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job->syncpt_incrs = syncpt.incrs;
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job->syncpt_id = syncpt.id;
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job->timeout = 10000;
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if (args->timeout && args->timeout < 10000)
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job->timeout = args->timeout;
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err = host1x_job_pin(job, context->client->base.dev);
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if (err)
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goto fail;
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err = host1x_job_submit(job);
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if (err) {
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host1x_job_unpin(job);
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goto fail;
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}
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args->fence = job->syncpt_end;
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fail:
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while (num_refs--)
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drm_gem_object_put(refs[num_refs]);
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kfree(refs);
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put:
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host1x_job_put(job);
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return err;
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}
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#ifdef CONFIG_DRM_TEGRA_STAGING
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static int tegra_gem_create(struct drm_device *drm, void *data,
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struct drm_file *file)
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{
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struct drm_tegra_gem_create *args = data;
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struct tegra_bo *bo;
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bo = tegra_bo_create_with_handle(file, drm, args->size, args->flags,
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&args->handle);
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if (IS_ERR(bo))
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return PTR_ERR(bo);
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return 0;
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}
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static int tegra_gem_mmap(struct drm_device *drm, void *data,
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struct drm_file *file)
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{
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|
struct drm_tegra_gem_mmap *args = data;
|
|
struct drm_gem_object *gem;
|
|
struct tegra_bo *bo;
|
|
|
|
gem = drm_gem_object_lookup(file, args->handle);
|
|
if (!gem)
|
|
return -EINVAL;
|
|
|
|
bo = to_tegra_bo(gem);
|
|
|
|
args->offset = drm_vma_node_offset_addr(&bo->gem.vma_node);
|
|
|
|
drm_gem_object_put(gem);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra_syncpt_read(struct drm_device *drm, void *data,
|
|
struct drm_file *file)
|
|
{
|
|
struct host1x *host = dev_get_drvdata(drm->dev->parent);
|
|
struct drm_tegra_syncpt_read *args = data;
|
|
struct host1x_syncpt *sp;
|
|
|
|
sp = host1x_syncpt_get(host, args->id);
|
|
if (!sp)
|
|
return -EINVAL;
|
|
|
|
args->value = host1x_syncpt_read_min(sp);
|
|
return 0;
|
|
}
|
|
|
|
static int tegra_syncpt_incr(struct drm_device *drm, void *data,
|
|
struct drm_file *file)
|
|
{
|
|
struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
|
|
struct drm_tegra_syncpt_incr *args = data;
|
|
struct host1x_syncpt *sp;
|
|
|
|
sp = host1x_syncpt_get(host1x, args->id);
|
|
if (!sp)
|
|
return -EINVAL;
|
|
|
|
return host1x_syncpt_incr(sp);
|
|
}
|
|
|
|
static int tegra_syncpt_wait(struct drm_device *drm, void *data,
|
|
struct drm_file *file)
|
|
{
|
|
struct host1x *host1x = dev_get_drvdata(drm->dev->parent);
|
|
struct drm_tegra_syncpt_wait *args = data;
|
|
struct host1x_syncpt *sp;
|
|
|
|
sp = host1x_syncpt_get(host1x, args->id);
|
|
if (!sp)
|
|
return -EINVAL;
|
|
|
|
return host1x_syncpt_wait(sp, args->thresh,
|
|
msecs_to_jiffies(args->timeout),
|
|
&args->value);
|
|
}
|
|
|
|
static int tegra_client_open(struct tegra_drm_file *fpriv,
|
|
struct tegra_drm_client *client,
|
|
struct tegra_drm_context *context)
|
|
{
|
|
int err;
|
|
|
|
err = client->ops->open_channel(client, context);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = idr_alloc(&fpriv->contexts, context, 1, 0, GFP_KERNEL);
|
|
if (err < 0) {
|
|
client->ops->close_channel(context);
|
|
return err;
|
|
}
|
|
|
|
context->client = client;
|
|
context->id = err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra_open_channel(struct drm_device *drm, void *data,
|
|
struct drm_file *file)
|
|
{
|
|
struct tegra_drm_file *fpriv = file->driver_priv;
|
|
struct tegra_drm *tegra = drm->dev_private;
|
|
struct drm_tegra_open_channel *args = data;
|
|
struct tegra_drm_context *context;
|
|
struct tegra_drm_client *client;
|
|
int err = -ENODEV;
|
|
|
|
context = kzalloc(sizeof(*context), GFP_KERNEL);
|
|
if (!context)
|
|
return -ENOMEM;
|
|
|
|
mutex_lock(&fpriv->lock);
|
|
|
|
list_for_each_entry(client, &tegra->clients, list)
|
|
if (client->base.class == args->client) {
|
|
err = tegra_client_open(fpriv, client, context);
|
|
if (err < 0)
|
|
break;
|
|
|
|
args->context = context->id;
|
|
break;
|
|
}
|
|
|
|
if (err < 0)
|
|
kfree(context);
|
|
|
|
mutex_unlock(&fpriv->lock);
|
|
return err;
|
|
}
|
|
|
|
static int tegra_close_channel(struct drm_device *drm, void *data,
|
|
struct drm_file *file)
|
|
{
|
|
struct tegra_drm_file *fpriv = file->driver_priv;
|
|
struct drm_tegra_close_channel *args = data;
|
|
struct tegra_drm_context *context;
|
|
int err = 0;
|
|
|
|
mutex_lock(&fpriv->lock);
|
|
|
|
context = idr_find(&fpriv->contexts, args->context);
|
|
if (!context) {
|
|
err = -EINVAL;
|
|
goto unlock;
|
|
}
|
|
|
|
idr_remove(&fpriv->contexts, context->id);
|
|
tegra_drm_context_free(context);
|
|
|
|
unlock:
|
|
mutex_unlock(&fpriv->lock);
|
|
return err;
|
|
}
|
|
|
|
static int tegra_get_syncpt(struct drm_device *drm, void *data,
|
|
struct drm_file *file)
|
|
{
|
|
struct tegra_drm_file *fpriv = file->driver_priv;
|
|
struct drm_tegra_get_syncpt *args = data;
|
|
struct tegra_drm_context *context;
|
|
struct host1x_syncpt *syncpt;
|
|
int err = 0;
|
|
|
|
mutex_lock(&fpriv->lock);
|
|
|
|
context = idr_find(&fpriv->contexts, args->context);
|
|
if (!context) {
|
|
err = -ENODEV;
|
|
goto unlock;
|
|
}
|
|
|
|
if (args->index >= context->client->base.num_syncpts) {
|
|
err = -EINVAL;
|
|
goto unlock;
|
|
}
|
|
|
|
syncpt = context->client->base.syncpts[args->index];
|
|
args->id = host1x_syncpt_id(syncpt);
|
|
|
|
unlock:
|
|
mutex_unlock(&fpriv->lock);
|
|
return err;
|
|
}
|
|
|
|
static int tegra_submit(struct drm_device *drm, void *data,
|
|
struct drm_file *file)
|
|
{
|
|
struct tegra_drm_file *fpriv = file->driver_priv;
|
|
struct drm_tegra_submit *args = data;
|
|
struct tegra_drm_context *context;
|
|
int err;
|
|
|
|
mutex_lock(&fpriv->lock);
|
|
|
|
context = idr_find(&fpriv->contexts, args->context);
|
|
if (!context) {
|
|
err = -ENODEV;
|
|
goto unlock;
|
|
}
|
|
|
|
err = context->client->ops->submit(context, args, drm, file);
|
|
|
|
unlock:
|
|
mutex_unlock(&fpriv->lock);
|
|
return err;
|
|
}
|
|
|
|
static int tegra_get_syncpt_base(struct drm_device *drm, void *data,
|
|
struct drm_file *file)
|
|
{
|
|
struct tegra_drm_file *fpriv = file->driver_priv;
|
|
struct drm_tegra_get_syncpt_base *args = data;
|
|
struct tegra_drm_context *context;
|
|
struct host1x_syncpt_base *base;
|
|
struct host1x_syncpt *syncpt;
|
|
int err = 0;
|
|
|
|
mutex_lock(&fpriv->lock);
|
|
|
|
context = idr_find(&fpriv->contexts, args->context);
|
|
if (!context) {
|
|
err = -ENODEV;
|
|
goto unlock;
|
|
}
|
|
|
|
if (args->syncpt >= context->client->base.num_syncpts) {
|
|
err = -EINVAL;
|
|
goto unlock;
|
|
}
|
|
|
|
syncpt = context->client->base.syncpts[args->syncpt];
|
|
|
|
base = host1x_syncpt_get_base(syncpt);
|
|
if (!base) {
|
|
err = -ENXIO;
|
|
goto unlock;
|
|
}
|
|
|
|
args->id = host1x_syncpt_base_id(base);
|
|
|
|
unlock:
|
|
mutex_unlock(&fpriv->lock);
|
|
return err;
|
|
}
|
|
|
|
static int tegra_gem_set_tiling(struct drm_device *drm, void *data,
|
|
struct drm_file *file)
|
|
{
|
|
struct drm_tegra_gem_set_tiling *args = data;
|
|
enum tegra_bo_tiling_mode mode;
|
|
struct drm_gem_object *gem;
|
|
unsigned long value = 0;
|
|
struct tegra_bo *bo;
|
|
|
|
switch (args->mode) {
|
|
case DRM_TEGRA_GEM_TILING_MODE_PITCH:
|
|
mode = TEGRA_BO_TILING_MODE_PITCH;
|
|
|
|
if (args->value != 0)
|
|
return -EINVAL;
|
|
|
|
break;
|
|
|
|
case DRM_TEGRA_GEM_TILING_MODE_TILED:
|
|
mode = TEGRA_BO_TILING_MODE_TILED;
|
|
|
|
if (args->value != 0)
|
|
return -EINVAL;
|
|
|
|
break;
|
|
|
|
case DRM_TEGRA_GEM_TILING_MODE_BLOCK:
|
|
mode = TEGRA_BO_TILING_MODE_BLOCK;
|
|
|
|
if (args->value > 5)
|
|
return -EINVAL;
|
|
|
|
value = args->value;
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
gem = drm_gem_object_lookup(file, args->handle);
|
|
if (!gem)
|
|
return -ENOENT;
|
|
|
|
bo = to_tegra_bo(gem);
|
|
|
|
bo->tiling.mode = mode;
|
|
bo->tiling.value = value;
|
|
|
|
drm_gem_object_put(gem);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra_gem_get_tiling(struct drm_device *drm, void *data,
|
|
struct drm_file *file)
|
|
{
|
|
struct drm_tegra_gem_get_tiling *args = data;
|
|
struct drm_gem_object *gem;
|
|
struct tegra_bo *bo;
|
|
int err = 0;
|
|
|
|
gem = drm_gem_object_lookup(file, args->handle);
|
|
if (!gem)
|
|
return -ENOENT;
|
|
|
|
bo = to_tegra_bo(gem);
|
|
|
|
switch (bo->tiling.mode) {
|
|
case TEGRA_BO_TILING_MODE_PITCH:
|
|
args->mode = DRM_TEGRA_GEM_TILING_MODE_PITCH;
|
|
args->value = 0;
|
|
break;
|
|
|
|
case TEGRA_BO_TILING_MODE_TILED:
|
|
args->mode = DRM_TEGRA_GEM_TILING_MODE_TILED;
|
|
args->value = 0;
|
|
break;
|
|
|
|
case TEGRA_BO_TILING_MODE_BLOCK:
|
|
args->mode = DRM_TEGRA_GEM_TILING_MODE_BLOCK;
|
|
args->value = bo->tiling.value;
|
|
break;
|
|
|
|
default:
|
|
err = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
drm_gem_object_put(gem);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int tegra_gem_set_flags(struct drm_device *drm, void *data,
|
|
struct drm_file *file)
|
|
{
|
|
struct drm_tegra_gem_set_flags *args = data;
|
|
struct drm_gem_object *gem;
|
|
struct tegra_bo *bo;
|
|
|
|
if (args->flags & ~DRM_TEGRA_GEM_FLAGS)
|
|
return -EINVAL;
|
|
|
|
gem = drm_gem_object_lookup(file, args->handle);
|
|
if (!gem)
|
|
return -ENOENT;
|
|
|
|
bo = to_tegra_bo(gem);
|
|
bo->flags = 0;
|
|
|
|
if (args->flags & DRM_TEGRA_GEM_BOTTOM_UP)
|
|
bo->flags |= TEGRA_BO_BOTTOM_UP;
|
|
|
|
drm_gem_object_put(gem);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra_gem_get_flags(struct drm_device *drm, void *data,
|
|
struct drm_file *file)
|
|
{
|
|
struct drm_tegra_gem_get_flags *args = data;
|
|
struct drm_gem_object *gem;
|
|
struct tegra_bo *bo;
|
|
|
|
gem = drm_gem_object_lookup(file, args->handle);
|
|
if (!gem)
|
|
return -ENOENT;
|
|
|
|
bo = to_tegra_bo(gem);
|
|
args->flags = 0;
|
|
|
|
if (bo->flags & TEGRA_BO_BOTTOM_UP)
|
|
args->flags |= DRM_TEGRA_GEM_BOTTOM_UP;
|
|
|
|
drm_gem_object_put(gem);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static const struct drm_ioctl_desc tegra_drm_ioctls[] = {
|
|
#ifdef CONFIG_DRM_TEGRA_STAGING
|
|
DRM_IOCTL_DEF_DRV(TEGRA_GEM_CREATE, tegra_gem_create,
|
|
DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(TEGRA_GEM_MMAP, tegra_gem_mmap,
|
|
DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_READ, tegra_syncpt_read,
|
|
DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_INCR, tegra_syncpt_incr,
|
|
DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(TEGRA_SYNCPT_WAIT, tegra_syncpt_wait,
|
|
DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(TEGRA_OPEN_CHANNEL, tegra_open_channel,
|
|
DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(TEGRA_CLOSE_CHANNEL, tegra_close_channel,
|
|
DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT, tegra_get_syncpt,
|
|
DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(TEGRA_SUBMIT, tegra_submit,
|
|
DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(TEGRA_GET_SYNCPT_BASE, tegra_get_syncpt_base,
|
|
DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_TILING, tegra_gem_set_tiling,
|
|
DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_TILING, tegra_gem_get_tiling,
|
|
DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(TEGRA_GEM_SET_FLAGS, tegra_gem_set_flags,
|
|
DRM_RENDER_ALLOW),
|
|
DRM_IOCTL_DEF_DRV(TEGRA_GEM_GET_FLAGS, tegra_gem_get_flags,
|
|
DRM_RENDER_ALLOW),
|
|
#endif
|
|
};
|
|
|
|
static const struct file_operations tegra_drm_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = drm_open,
|
|
.release = drm_release,
|
|
.unlocked_ioctl = drm_ioctl,
|
|
.mmap = tegra_drm_mmap,
|
|
.poll = drm_poll,
|
|
.read = drm_read,
|
|
.compat_ioctl = drm_compat_ioctl,
|
|
.llseek = noop_llseek,
|
|
};
|
|
|
|
static int tegra_drm_context_cleanup(int id, void *p, void *data)
|
|
{
|
|
struct tegra_drm_context *context = p;
|
|
|
|
tegra_drm_context_free(context);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void tegra_drm_postclose(struct drm_device *drm, struct drm_file *file)
|
|
{
|
|
struct tegra_drm_file *fpriv = file->driver_priv;
|
|
|
|
mutex_lock(&fpriv->lock);
|
|
idr_for_each(&fpriv->contexts, tegra_drm_context_cleanup, NULL);
|
|
mutex_unlock(&fpriv->lock);
|
|
|
|
idr_destroy(&fpriv->contexts);
|
|
mutex_destroy(&fpriv->lock);
|
|
kfree(fpriv);
|
|
}
|
|
|
|
#ifdef CONFIG_DEBUG_FS
|
|
static int tegra_debugfs_framebuffers(struct seq_file *s, void *data)
|
|
{
|
|
struct drm_info_node *node = (struct drm_info_node *)s->private;
|
|
struct drm_device *drm = node->minor->dev;
|
|
struct drm_framebuffer *fb;
|
|
|
|
mutex_lock(&drm->mode_config.fb_lock);
|
|
|
|
list_for_each_entry(fb, &drm->mode_config.fb_list, head) {
|
|
seq_printf(s, "%3d: user size: %d x %d, depth %d, %d bpp, refcount %d\n",
|
|
fb->base.id, fb->width, fb->height,
|
|
fb->format->depth,
|
|
fb->format->cpp[0] * 8,
|
|
drm_framebuffer_read_refcount(fb));
|
|
}
|
|
|
|
mutex_unlock(&drm->mode_config.fb_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tegra_debugfs_iova(struct seq_file *s, void *data)
|
|
{
|
|
struct drm_info_node *node = (struct drm_info_node *)s->private;
|
|
struct drm_device *drm = node->minor->dev;
|
|
struct tegra_drm *tegra = drm->dev_private;
|
|
struct drm_printer p = drm_seq_file_printer(s);
|
|
|
|
if (tegra->domain) {
|
|
mutex_lock(&tegra->mm_lock);
|
|
drm_mm_print(&tegra->mm, &p);
|
|
mutex_unlock(&tegra->mm_lock);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct drm_info_list tegra_debugfs_list[] = {
|
|
{ "framebuffers", tegra_debugfs_framebuffers, 0 },
|
|
{ "iova", tegra_debugfs_iova, 0 },
|
|
};
|
|
|
|
static void tegra_debugfs_init(struct drm_minor *minor)
|
|
{
|
|
drm_debugfs_create_files(tegra_debugfs_list,
|
|
ARRAY_SIZE(tegra_debugfs_list),
|
|
minor->debugfs_root, minor);
|
|
}
|
|
#endif
|
|
|
|
static struct drm_driver tegra_drm_driver = {
|
|
.driver_features = DRIVER_MODESET | DRIVER_GEM |
|
|
DRIVER_ATOMIC | DRIVER_RENDER,
|
|
.open = tegra_drm_open,
|
|
.postclose = tegra_drm_postclose,
|
|
.lastclose = drm_fb_helper_lastclose,
|
|
|
|
#if defined(CONFIG_DEBUG_FS)
|
|
.debugfs_init = tegra_debugfs_init,
|
|
#endif
|
|
|
|
.gem_free_object_unlocked = tegra_bo_free_object,
|
|
.gem_vm_ops = &tegra_bo_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 = tegra_gem_prime_export,
|
|
.gem_prime_import = tegra_gem_prime_import,
|
|
|
|
.dumb_create = tegra_bo_dumb_create,
|
|
|
|
.ioctls = tegra_drm_ioctls,
|
|
.num_ioctls = ARRAY_SIZE(tegra_drm_ioctls),
|
|
.fops = &tegra_drm_fops,
|
|
|
|
.name = DRIVER_NAME,
|
|
.desc = DRIVER_DESC,
|
|
.date = DRIVER_DATE,
|
|
.major = DRIVER_MAJOR,
|
|
.minor = DRIVER_MINOR,
|
|
.patchlevel = DRIVER_PATCHLEVEL,
|
|
};
|
|
|
|
int tegra_drm_register_client(struct tegra_drm *tegra,
|
|
struct tegra_drm_client *client)
|
|
{
|
|
mutex_lock(&tegra->clients_lock);
|
|
list_add_tail(&client->list, &tegra->clients);
|
|
client->drm = tegra;
|
|
mutex_unlock(&tegra->clients_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int tegra_drm_unregister_client(struct tegra_drm *tegra,
|
|
struct tegra_drm_client *client)
|
|
{
|
|
mutex_lock(&tegra->clients_lock);
|
|
list_del_init(&client->list);
|
|
client->drm = NULL;
|
|
mutex_unlock(&tegra->clients_lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int host1x_client_iommu_attach(struct host1x_client *client)
|
|
{
|
|
struct iommu_domain *domain = iommu_get_domain_for_dev(client->dev);
|
|
struct drm_device *drm = dev_get_drvdata(client->host);
|
|
struct tegra_drm *tegra = drm->dev_private;
|
|
struct iommu_group *group = NULL;
|
|
int err;
|
|
|
|
/*
|
|
* If the host1x client is already attached to an IOMMU domain that is
|
|
* not the shared IOMMU domain, don't try to attach it to a different
|
|
* domain. This allows using the IOMMU-backed DMA API.
|
|
*/
|
|
if (domain && domain != tegra->domain)
|
|
return 0;
|
|
|
|
if (tegra->domain) {
|
|
group = iommu_group_get(client->dev);
|
|
if (!group)
|
|
return -ENODEV;
|
|
|
|
if (domain != tegra->domain) {
|
|
err = iommu_attach_group(tegra->domain, group);
|
|
if (err < 0) {
|
|
iommu_group_put(group);
|
|
return err;
|
|
}
|
|
}
|
|
|
|
tegra->use_explicit_iommu = true;
|
|
}
|
|
|
|
client->group = group;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void host1x_client_iommu_detach(struct host1x_client *client)
|
|
{
|
|
struct drm_device *drm = dev_get_drvdata(client->host);
|
|
struct tegra_drm *tegra = drm->dev_private;
|
|
struct iommu_domain *domain;
|
|
|
|
if (client->group) {
|
|
/*
|
|
* Devices that are part of the same group may no longer be
|
|
* attached to a domain at this point because their group may
|
|
* have been detached by an earlier client.
|
|
*/
|
|
domain = iommu_get_domain_for_dev(client->dev);
|
|
if (domain)
|
|
iommu_detach_group(tegra->domain, client->group);
|
|
|
|
iommu_group_put(client->group);
|
|
client->group = NULL;
|
|
}
|
|
}
|
|
|
|
void *tegra_drm_alloc(struct tegra_drm *tegra, size_t size, dma_addr_t *dma)
|
|
{
|
|
struct iova *alloc;
|
|
void *virt;
|
|
gfp_t gfp;
|
|
int err;
|
|
|
|
if (tegra->domain)
|
|
size = iova_align(&tegra->carveout.domain, size);
|
|
else
|
|
size = PAGE_ALIGN(size);
|
|
|
|
gfp = GFP_KERNEL | __GFP_ZERO;
|
|
if (!tegra->domain) {
|
|
/*
|
|
* Many units only support 32-bit addresses, even on 64-bit
|
|
* SoCs. If there is no IOMMU to translate into a 32-bit IO
|
|
* virtual address space, force allocations to be in the
|
|
* lower 32-bit range.
|
|
*/
|
|
gfp |= GFP_DMA;
|
|
}
|
|
|
|
virt = (void *)__get_free_pages(gfp, get_order(size));
|
|
if (!virt)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
if (!tegra->domain) {
|
|
/*
|
|
* If IOMMU is disabled, devices address physical memory
|
|
* directly.
|
|
*/
|
|
*dma = virt_to_phys(virt);
|
|
return virt;
|
|
}
|
|
|
|
alloc = alloc_iova(&tegra->carveout.domain,
|
|
size >> tegra->carveout.shift,
|
|
tegra->carveout.limit, true);
|
|
if (!alloc) {
|
|
err = -EBUSY;
|
|
goto free_pages;
|
|
}
|
|
|
|
*dma = iova_dma_addr(&tegra->carveout.domain, alloc);
|
|
err = iommu_map(tegra->domain, *dma, virt_to_phys(virt),
|
|
size, IOMMU_READ | IOMMU_WRITE);
|
|
if (err < 0)
|
|
goto free_iova;
|
|
|
|
return virt;
|
|
|
|
free_iova:
|
|
__free_iova(&tegra->carveout.domain, alloc);
|
|
free_pages:
|
|
free_pages((unsigned long)virt, get_order(size));
|
|
|
|
return ERR_PTR(err);
|
|
}
|
|
|
|
void tegra_drm_free(struct tegra_drm *tegra, size_t size, void *virt,
|
|
dma_addr_t dma)
|
|
{
|
|
if (tegra->domain)
|
|
size = iova_align(&tegra->carveout.domain, size);
|
|
else
|
|
size = PAGE_ALIGN(size);
|
|
|
|
if (tegra->domain) {
|
|
iommu_unmap(tegra->domain, dma, size);
|
|
free_iova(&tegra->carveout.domain,
|
|
iova_pfn(&tegra->carveout.domain, dma));
|
|
}
|
|
|
|
free_pages((unsigned long)virt, get_order(size));
|
|
}
|
|
|
|
static bool host1x_drm_wants_iommu(struct host1x_device *dev)
|
|
{
|
|
struct host1x *host1x = dev_get_drvdata(dev->dev.parent);
|
|
struct iommu_domain *domain;
|
|
|
|
/*
|
|
* If the Tegra DRM clients are backed by an IOMMU, push buffers are
|
|
* likely to be allocated beyond the 32-bit boundary if sufficient
|
|
* system memory is available. This is problematic on earlier Tegra
|
|
* generations where host1x supports a maximum of 32 address bits in
|
|
* the GATHER opcode. In this case, unless host1x is behind an IOMMU
|
|
* as well it won't be able to process buffers allocated beyond the
|
|
* 32-bit boundary.
|
|
*
|
|
* The DMA API will use bounce buffers in this case, so that could
|
|
* perhaps still be made to work, even if less efficient, but there
|
|
* is another catch: in order to perform cache maintenance on pages
|
|
* allocated for discontiguous buffers we need to map and unmap the
|
|
* SG table representing these buffers. This is fine for something
|
|
* small like a push buffer, but it exhausts the bounce buffer pool
|
|
* (typically on the order of a few MiB) for framebuffers (many MiB
|
|
* for any modern resolution).
|
|
*
|
|
* Work around this by making sure that Tegra DRM clients only use
|
|
* an IOMMU if the parent host1x also uses an IOMMU.
|
|
*
|
|
* Note that there's still a small gap here that we don't cover: if
|
|
* the DMA API is backed by an IOMMU there's no way to control which
|
|
* device is attached to an IOMMU and which isn't, except via wiring
|
|
* up the device tree appropriately. This is considered an problem
|
|
* of integration, so care must be taken for the DT to be consistent.
|
|
*/
|
|
domain = iommu_get_domain_for_dev(dev->dev.parent);
|
|
|
|
/*
|
|
* Tegra20 and Tegra30 don't support addressing memory beyond the
|
|
* 32-bit boundary, so the regular GATHER opcodes will always be
|
|
* sufficient and whether or not the host1x is attached to an IOMMU
|
|
* doesn't matter.
|
|
*/
|
|
if (!domain && host1x_get_dma_mask(host1x) <= DMA_BIT_MASK(32))
|
|
return true;
|
|
|
|
return domain != NULL;
|
|
}
|
|
|
|
static int host1x_drm_probe(struct host1x_device *dev)
|
|
{
|
|
struct drm_driver *driver = &tegra_drm_driver;
|
|
struct tegra_drm *tegra;
|
|
struct drm_device *drm;
|
|
int err;
|
|
|
|
drm = drm_dev_alloc(driver, &dev->dev);
|
|
if (IS_ERR(drm))
|
|
return PTR_ERR(drm);
|
|
|
|
tegra = kzalloc(sizeof(*tegra), GFP_KERNEL);
|
|
if (!tegra) {
|
|
err = -ENOMEM;
|
|
goto put;
|
|
}
|
|
|
|
if (host1x_drm_wants_iommu(dev) && iommu_present(&platform_bus_type)) {
|
|
tegra->domain = iommu_domain_alloc(&platform_bus_type);
|
|
if (!tegra->domain) {
|
|
err = -ENOMEM;
|
|
goto free;
|
|
}
|
|
|
|
err = iova_cache_get();
|
|
if (err < 0)
|
|
goto domain;
|
|
}
|
|
|
|
mutex_init(&tegra->clients_lock);
|
|
INIT_LIST_HEAD(&tegra->clients);
|
|
|
|
dev_set_drvdata(&dev->dev, drm);
|
|
drm->dev_private = tegra;
|
|
tegra->drm = drm;
|
|
|
|
drm_mode_config_init(drm);
|
|
|
|
drm->mode_config.min_width = 0;
|
|
drm->mode_config.min_height = 0;
|
|
|
|
drm->mode_config.max_width = 4096;
|
|
drm->mode_config.max_height = 4096;
|
|
|
|
drm->mode_config.allow_fb_modifiers = true;
|
|
|
|
drm->mode_config.normalize_zpos = true;
|
|
|
|
drm->mode_config.funcs = &tegra_drm_mode_config_funcs;
|
|
drm->mode_config.helper_private = &tegra_drm_mode_config_helpers;
|
|
|
|
err = tegra_drm_fb_prepare(drm);
|
|
if (err < 0)
|
|
goto config;
|
|
|
|
drm_kms_helper_poll_init(drm);
|
|
|
|
err = host1x_device_init(dev);
|
|
if (err < 0)
|
|
goto fbdev;
|
|
|
|
if (tegra->use_explicit_iommu) {
|
|
u64 carveout_start, carveout_end, gem_start, gem_end;
|
|
u64 dma_mask = dma_get_mask(&dev->dev);
|
|
dma_addr_t start, end;
|
|
unsigned long order;
|
|
|
|
start = tegra->domain->geometry.aperture_start & dma_mask;
|
|
end = tegra->domain->geometry.aperture_end & dma_mask;
|
|
|
|
gem_start = start;
|
|
gem_end = end - CARVEOUT_SZ;
|
|
carveout_start = gem_end + 1;
|
|
carveout_end = end;
|
|
|
|
order = __ffs(tegra->domain->pgsize_bitmap);
|
|
init_iova_domain(&tegra->carveout.domain, 1UL << order,
|
|
carveout_start >> order);
|
|
|
|
tegra->carveout.shift = iova_shift(&tegra->carveout.domain);
|
|
tegra->carveout.limit = carveout_end >> tegra->carveout.shift;
|
|
|
|
drm_mm_init(&tegra->mm, gem_start, gem_end - gem_start + 1);
|
|
mutex_init(&tegra->mm_lock);
|
|
|
|
DRM_DEBUG_DRIVER("IOMMU apertures:\n");
|
|
DRM_DEBUG_DRIVER(" GEM: %#llx-%#llx\n", gem_start, gem_end);
|
|
DRM_DEBUG_DRIVER(" Carveout: %#llx-%#llx\n", carveout_start,
|
|
carveout_end);
|
|
} else if (tegra->domain) {
|
|
iommu_domain_free(tegra->domain);
|
|
tegra->domain = NULL;
|
|
iova_cache_put();
|
|
}
|
|
|
|
if (tegra->hub) {
|
|
err = tegra_display_hub_prepare(tegra->hub);
|
|
if (err < 0)
|
|
goto device;
|
|
}
|
|
|
|
/*
|
|
* We don't use the drm_irq_install() helpers provided by the DRM
|
|
* core, so we need to set this manually in order to allow the
|
|
* DRM_IOCTL_WAIT_VBLANK to operate correctly.
|
|
*/
|
|
drm->irq_enabled = true;
|
|
|
|
/* syncpoints are used for full 32-bit hardware VBLANK counters */
|
|
drm->max_vblank_count = 0xffffffff;
|
|
|
|
err = drm_vblank_init(drm, drm->mode_config.num_crtc);
|
|
if (err < 0)
|
|
goto hub;
|
|
|
|
drm_mode_config_reset(drm);
|
|
|
|
err = drm_fb_helper_remove_conflicting_framebuffers(NULL, "tegradrmfb",
|
|
false);
|
|
if (err < 0)
|
|
goto hub;
|
|
|
|
err = tegra_drm_fb_init(drm);
|
|
if (err < 0)
|
|
goto hub;
|
|
|
|
err = drm_dev_register(drm, 0);
|
|
if (err < 0)
|
|
goto fb;
|
|
|
|
return 0;
|
|
|
|
fb:
|
|
tegra_drm_fb_exit(drm);
|
|
hub:
|
|
if (tegra->hub)
|
|
tegra_display_hub_cleanup(tegra->hub);
|
|
device:
|
|
if (tegra->domain) {
|
|
mutex_destroy(&tegra->mm_lock);
|
|
drm_mm_takedown(&tegra->mm);
|
|
put_iova_domain(&tegra->carveout.domain);
|
|
iova_cache_put();
|
|
}
|
|
|
|
host1x_device_exit(dev);
|
|
fbdev:
|
|
drm_kms_helper_poll_fini(drm);
|
|
tegra_drm_fb_free(drm);
|
|
config:
|
|
drm_mode_config_cleanup(drm);
|
|
domain:
|
|
if (tegra->domain)
|
|
iommu_domain_free(tegra->domain);
|
|
free:
|
|
kfree(tegra);
|
|
put:
|
|
drm_dev_put(drm);
|
|
return err;
|
|
}
|
|
|
|
static int host1x_drm_remove(struct host1x_device *dev)
|
|
{
|
|
struct drm_device *drm = dev_get_drvdata(&dev->dev);
|
|
struct tegra_drm *tegra = drm->dev_private;
|
|
int err;
|
|
|
|
drm_dev_unregister(drm);
|
|
|
|
drm_kms_helper_poll_fini(drm);
|
|
tegra_drm_fb_exit(drm);
|
|
drm_atomic_helper_shutdown(drm);
|
|
drm_mode_config_cleanup(drm);
|
|
|
|
if (tegra->hub)
|
|
tegra_display_hub_cleanup(tegra->hub);
|
|
|
|
err = host1x_device_exit(dev);
|
|
if (err < 0)
|
|
dev_err(&dev->dev, "host1x device cleanup failed: %d\n", err);
|
|
|
|
if (tegra->domain) {
|
|
mutex_destroy(&tegra->mm_lock);
|
|
drm_mm_takedown(&tegra->mm);
|
|
put_iova_domain(&tegra->carveout.domain);
|
|
iova_cache_put();
|
|
iommu_domain_free(tegra->domain);
|
|
}
|
|
|
|
kfree(tegra);
|
|
drm_dev_put(drm);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_PM_SLEEP
|
|
static int host1x_drm_suspend(struct device *dev)
|
|
{
|
|
struct drm_device *drm = dev_get_drvdata(dev);
|
|
|
|
return drm_mode_config_helper_suspend(drm);
|
|
}
|
|
|
|
static int host1x_drm_resume(struct device *dev)
|
|
{
|
|
struct drm_device *drm = dev_get_drvdata(dev);
|
|
|
|
return drm_mode_config_helper_resume(drm);
|
|
}
|
|
#endif
|
|
|
|
static SIMPLE_DEV_PM_OPS(host1x_drm_pm_ops, host1x_drm_suspend,
|
|
host1x_drm_resume);
|
|
|
|
static const struct of_device_id host1x_drm_subdevs[] = {
|
|
{ .compatible = "nvidia,tegra20-dc", },
|
|
{ .compatible = "nvidia,tegra20-hdmi", },
|
|
{ .compatible = "nvidia,tegra20-gr2d", },
|
|
{ .compatible = "nvidia,tegra20-gr3d", },
|
|
{ .compatible = "nvidia,tegra30-dc", },
|
|
{ .compatible = "nvidia,tegra30-hdmi", },
|
|
{ .compatible = "nvidia,tegra30-gr2d", },
|
|
{ .compatible = "nvidia,tegra30-gr3d", },
|
|
{ .compatible = "nvidia,tegra114-dsi", },
|
|
{ .compatible = "nvidia,tegra114-hdmi", },
|
|
{ .compatible = "nvidia,tegra114-gr3d", },
|
|
{ .compatible = "nvidia,tegra124-dc", },
|
|
{ .compatible = "nvidia,tegra124-sor", },
|
|
{ .compatible = "nvidia,tegra124-hdmi", },
|
|
{ .compatible = "nvidia,tegra124-dsi", },
|
|
{ .compatible = "nvidia,tegra124-vic", },
|
|
{ .compatible = "nvidia,tegra132-dsi", },
|
|
{ .compatible = "nvidia,tegra210-dc", },
|
|
{ .compatible = "nvidia,tegra210-dsi", },
|
|
{ .compatible = "nvidia,tegra210-sor", },
|
|
{ .compatible = "nvidia,tegra210-sor1", },
|
|
{ .compatible = "nvidia,tegra210-vic", },
|
|
{ .compatible = "nvidia,tegra186-display", },
|
|
{ .compatible = "nvidia,tegra186-dc", },
|
|
{ .compatible = "nvidia,tegra186-sor", },
|
|
{ .compatible = "nvidia,tegra186-sor1", },
|
|
{ .compatible = "nvidia,tegra186-vic", },
|
|
{ .compatible = "nvidia,tegra194-display", },
|
|
{ .compatible = "nvidia,tegra194-dc", },
|
|
{ .compatible = "nvidia,tegra194-sor", },
|
|
{ .compatible = "nvidia,tegra194-vic", },
|
|
{ /* sentinel */ }
|
|
};
|
|
|
|
static struct host1x_driver host1x_drm_driver = {
|
|
.driver = {
|
|
.name = "drm",
|
|
.pm = &host1x_drm_pm_ops,
|
|
},
|
|
.probe = host1x_drm_probe,
|
|
.remove = host1x_drm_remove,
|
|
.subdevs = host1x_drm_subdevs,
|
|
};
|
|
|
|
static struct platform_driver * const drivers[] = {
|
|
&tegra_display_hub_driver,
|
|
&tegra_dc_driver,
|
|
&tegra_hdmi_driver,
|
|
&tegra_dsi_driver,
|
|
&tegra_dpaux_driver,
|
|
&tegra_sor_driver,
|
|
&tegra_gr2d_driver,
|
|
&tegra_gr3d_driver,
|
|
&tegra_vic_driver,
|
|
};
|
|
|
|
static int __init host1x_drm_init(void)
|
|
{
|
|
int err;
|
|
|
|
err = host1x_driver_register(&host1x_drm_driver);
|
|
if (err < 0)
|
|
return err;
|
|
|
|
err = platform_register_drivers(drivers, ARRAY_SIZE(drivers));
|
|
if (err < 0)
|
|
goto unregister_host1x;
|
|
|
|
return 0;
|
|
|
|
unregister_host1x:
|
|
host1x_driver_unregister(&host1x_drm_driver);
|
|
return err;
|
|
}
|
|
module_init(host1x_drm_init);
|
|
|
|
static void __exit host1x_drm_exit(void)
|
|
{
|
|
platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
|
|
host1x_driver_unregister(&host1x_drm_driver);
|
|
}
|
|
module_exit(host1x_drm_exit);
|
|
|
|
MODULE_AUTHOR("Thierry Reding <thierry.reding@avionic-design.de>");
|
|
MODULE_DESCRIPTION("NVIDIA Tegra DRM driver");
|
|
MODULE_LICENSE("GPL v2");
|