From: Thierry Reding treding@nvidia.com
These new functions can be used to open a channel to a given engine, map and unmap buffer objects to that channel, and close the channel.
Signed-off-by: Thierry Reding treding@nvidia.com --- tegra/channel.c | 195 ++++++++++++++++++++++++++++++++++++++++ tegra/meson.build | 2 +- tegra/private.h | 24 +++++ tegra/tegra-symbols.txt | 5 ++ tegra/tegra.h | 22 +++++ 5 files changed, 247 insertions(+), 1 deletion(-) create mode 100644 tegra/channel.c
diff --git a/tegra/channel.c b/tegra/channel.c new file mode 100644 index 000000000000..391362023259 --- /dev/null +++ b/tegra/channel.c @@ -0,0 +1,195 @@ +/* + * Copyright © 2012, 2013 Thierry Reding + * Copyright © 2013 Erik Faye-Lund + * Copyright © 2014-2021 NVIDIA Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include <errno.h> +#include <string.h> + +#include <sys/ioctl.h> + +#include "private.h" + +drm_public int +drm_tegra_channel_open(struct drm_tegra *drm, + enum drm_tegra_class client, + struct drm_tegra_channel **channelp) +{ + struct drm_tegra_channel_open args; + struct drm_tegra_channel *channel; + enum host1x_class class; + int err; + + switch (client) { + case DRM_TEGRA_HOST1X: + class = HOST1X_CLASS_HOST1X; + break; + + case DRM_TEGRA_GR2D: + class = HOST1X_CLASS_GR2D; + break; + + case DRM_TEGRA_GR3D: + class = HOST1X_CLASS_GR3D; + break; + + case DRM_TEGRA_VIC: + class = HOST1X_CLASS_VIC; + break; + + default: + return -EINVAL; + } + + channel = calloc(1, sizeof(*channel)); + if (!channel) + return -ENOMEM; + + channel->drm = drm; + + memset(&args, 0, sizeof(args)); + args.host1x_class = class; + + err = ioctl(drm->fd, DRM_IOCTL_TEGRA_CHANNEL_OPEN, &args); + if (err < 0) { + free(channel); + return -errno; + } + + channel->context = args.context; + channel->version = args.version; + channel->capabilities = args.capabilities; + channel->class = class; + + switch (channel->version) { + case 0x20: + case 0x30: + case 0x35: + case 0x40: + case 0x21: + channel->cond_shift = 8; + break; + + case 0x18: + case 0x19: + channel->cond_shift = 10; + break; + + default: + return -ENOTSUP; + } + + *channelp = channel; + + return 0; +} + +drm_public int drm_tegra_channel_close(struct drm_tegra_channel *channel) +{ + struct drm_tegra_channel_close args; + struct drm_tegra *drm; + int err; + + if (!channel) + return -EINVAL; + + drm = channel->drm; + + memset(&args, 0, sizeof(args)); + args.context = channel->context; + + err = ioctl(drm->fd, DRM_IOCTL_TEGRA_CHANNEL_CLOSE, &args); + if (err < 0) + return -errno; + + free(channel); + + return 0; +} + +drm_public unsigned int +drm_tegra_channel_get_version(struct drm_tegra_channel *channel) +{ + return channel->version; +} + +drm_public int +drm_tegra_channel_map(struct drm_tegra_channel *channel, + struct drm_tegra_bo *bo, uint32_t flags, + struct drm_tegra_mapping **mapp) +{ + struct drm_tegra *drm = channel->drm; + struct drm_tegra_channel_map args; + struct drm_tegra_mapping *map; + int err; + + if (!drm || !bo || !mapp) + return -EINVAL; + + map = calloc(1, sizeof(*map)); + if (!map) + return -ENOMEM; + + memset(&args, 0, sizeof(args)); + args.context = channel->context; + args.handle = bo->handle; + args.flags = flags; + + err = ioctl(drm->fd, DRM_IOCTL_TEGRA_CHANNEL_MAP, &args); + if (err < 0) { + free(map); + return -errno; + } + + map->channel = channel; + map->id = args.mapping; + *mapp = map; + + return 0; +} + +drm_public int +drm_tegra_channel_unmap(struct drm_tegra_mapping *map) +{ + struct drm_tegra_channel *channel = map->channel; + struct drm_tegra *drm = channel->drm; + struct drm_tegra_channel_unmap args; + int err; + + if (!channel || !map) + return -EINVAL; + + memset(&args, 0, sizeof(args)); + args.context = channel->context; + args.mapping = map->id; + + err = ioctl(drm->fd, DRM_IOCTL_TEGRA_CHANNEL_UNMAP, &args); + if (err < 0) + return -errno; + + free(map); + return 0; +} diff --git a/tegra/meson.build b/tegra/meson.build index 9813d9baddac..e115966fc8ed 100644 --- a/tegra/meson.build +++ b/tegra/meson.build @@ -22,7 +22,7 @@ libdrm_tegra = library( 'drm_tegra', [ files( - 'private.h', 'tegra.c' + 'channel.c', 'private.h', 'tegra.c' ), config_file ], diff --git a/tegra/private.h b/tegra/private.h index d0f2944bfb3a..7c05276707bf 100644 --- a/tegra/private.h +++ b/tegra/private.h @@ -31,8 +31,17 @@ #include <libdrm_macros.h> #include <xf86atomic.h>
+#include "tegra_drm.h" #include "tegra.h"
+enum host1x_class { + HOST1X_CLASS_HOST1X = 0x01, + HOST1X_CLASS_GR2D = 0x51, + HOST1X_CLASS_GR2D_SB = 0x52, + HOST1X_CLASS_VIC = 0x5d, + HOST1X_CLASS_GR3D = 0x60, +}; + struct drm_tegra { bool close; int fd; @@ -48,4 +57,19 @@ struct drm_tegra_bo { void *map; };
+struct drm_tegra_channel { + struct drm_tegra *drm; + enum host1x_class class; + uint32_t capabilities; + unsigned int version; + uint64_t context; + + unsigned int cond_shift; +}; + +struct drm_tegra_mapping { + struct drm_tegra_channel *channel; + uint32_t id; +}; + #endif /* __DRM_TEGRA_PRIVATE_H__ */ diff --git a/tegra/tegra-symbols.txt b/tegra/tegra-symbols.txt index f8811bcd26f4..c16a351171f1 100644 --- a/tegra/tegra-symbols.txt +++ b/tegra/tegra-symbols.txt @@ -9,5 +9,10 @@ drm_tegra_bo_ref drm_tegra_bo_unmap drm_tegra_bo_unref drm_tegra_bo_wrap +drm_tegra_channel_close +drm_tegra_channel_get_version +drm_tegra_channel_map +drm_tegra_channel_open +drm_tegra_channel_unmap drm_tegra_close drm_tegra_new diff --git a/tegra/tegra.h b/tegra/tegra.h index 2bcd596e2d61..621fef6b7000 100644 --- a/tegra/tegra.h +++ b/tegra/tegra.h @@ -28,6 +28,15 @@ #include <stdint.h> #include <stdlib.h>
+#include <tegra_drm.h> + +enum drm_tegra_class { + DRM_TEGRA_HOST1X, + DRM_TEGRA_GR2D, + DRM_TEGRA_GR3D, + DRM_TEGRA_VIC, +}; + struct drm_tegra_bo; struct drm_tegra;
@@ -52,4 +61,17 @@ int drm_tegra_bo_export(struct drm_tegra_bo *bo, uint32_t flags); int drm_tegra_bo_import(struct drm_tegra *drm, int fd, struct drm_tegra_bo **bop);
+struct drm_tegra_channel; +struct drm_tegra_mapping; + +int drm_tegra_channel_open(struct drm_tegra *drm, + enum drm_tegra_class client, + struct drm_tegra_channel **channelp); +int drm_tegra_channel_close(struct drm_tegra_channel *channel); +unsigned int drm_tegra_channel_get_version(struct drm_tegra_channel *channel); +int drm_tegra_channel_map(struct drm_tegra_channel *channel, + struct drm_tegra_bo *bo, uint32_t flags, + struct drm_tegra_mapping **mapp); +int drm_tegra_channel_unmap(struct drm_tegra_mapping *map); + #endif /* __DRM_TEGRA_H__ */