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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c')
-rw-r--r-- | drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c | 283 |
1 files changed, 283 insertions, 0 deletions
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c b/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c new file mode 100644 index 000000000..df5da5a44 --- /dev/null +++ b/drivers/gpu/drm/arm/display/komeda/komeda_framebuffer.c @@ -0,0 +1,283 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * (C) COPYRIGHT 2018 ARM Limited. All rights reserved. + * Author: James.Qian.Wang <james.qian.wang@arm.com> + * + */ +#include <drm/drm_device.h> +#include <drm/drm_fb_dma_helper.h> +#include <drm/drm_gem.h> +#include <drm/drm_gem_dma_helper.h> +#include <drm/drm_gem_framebuffer_helper.h> + +#include "komeda_framebuffer.h" +#include "komeda_dev.h" + +static void komeda_fb_destroy(struct drm_framebuffer *fb) +{ + struct komeda_fb *kfb = to_kfb(fb); + u32 i; + + for (i = 0; i < fb->format->num_planes; i++) + drm_gem_object_put(fb->obj[i]); + + drm_framebuffer_cleanup(fb); + kfree(kfb); +} + +static int komeda_fb_create_handle(struct drm_framebuffer *fb, + struct drm_file *file, u32 *handle) +{ + return drm_gem_handle_create(file, fb->obj[0], handle); +} + +static const struct drm_framebuffer_funcs komeda_fb_funcs = { + .destroy = komeda_fb_destroy, + .create_handle = komeda_fb_create_handle, +}; + +static int +komeda_fb_afbc_size_check(struct komeda_fb *kfb, struct drm_file *file, + const struct drm_mode_fb_cmd2 *mode_cmd) +{ + struct drm_framebuffer *fb = &kfb->base; + const struct drm_format_info *info = fb->format; + struct drm_gem_object *obj; + u32 alignment_w = 0, alignment_h = 0, alignment_header, n_blocks, bpp; + u64 min_size; + + obj = drm_gem_object_lookup(file, mode_cmd->handles[0]); + if (!obj) { + DRM_DEBUG_KMS("Failed to lookup GEM object\n"); + return -ENOENT; + } + + switch (fb->modifier & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK) { + case AFBC_FORMAT_MOD_BLOCK_SIZE_32x8: + alignment_w = 32; + alignment_h = 8; + break; + case AFBC_FORMAT_MOD_BLOCK_SIZE_16x16: + alignment_w = 16; + alignment_h = 16; + break; + default: + WARN(1, "Invalid AFBC_FORMAT_MOD_BLOCK_SIZE: %lld.\n", + fb->modifier & AFBC_FORMAT_MOD_BLOCK_SIZE_MASK); + break; + } + + /* tiled header afbc */ + if (fb->modifier & AFBC_FORMAT_MOD_TILED) { + alignment_w *= AFBC_TH_LAYOUT_ALIGNMENT; + alignment_h *= AFBC_TH_LAYOUT_ALIGNMENT; + alignment_header = AFBC_TH_BODY_START_ALIGNMENT; + } else { + alignment_header = AFBC_BODY_START_ALIGNMENT; + } + + kfb->aligned_w = ALIGN(fb->width, alignment_w); + kfb->aligned_h = ALIGN(fb->height, alignment_h); + + if (fb->offsets[0] % alignment_header) { + DRM_DEBUG_KMS("afbc offset alignment check failed.\n"); + goto check_failed; + } + + n_blocks = (kfb->aligned_w * kfb->aligned_h) / AFBC_SUPERBLK_PIXELS; + kfb->offset_payload = ALIGN(n_blocks * AFBC_HEADER_SIZE, + alignment_header); + + bpp = komeda_get_afbc_format_bpp(info, fb->modifier); + kfb->afbc_size = kfb->offset_payload + n_blocks * + ALIGN(bpp * AFBC_SUPERBLK_PIXELS / 8, + AFBC_SUPERBLK_ALIGNMENT); + min_size = kfb->afbc_size + fb->offsets[0]; + if (min_size > obj->size) { + DRM_DEBUG_KMS("afbc size check failed, obj_size: 0x%zx. min_size 0x%llx.\n", + obj->size, min_size); + goto check_failed; + } + + fb->obj[0] = obj; + return 0; + +check_failed: + drm_gem_object_put(obj); + return -EINVAL; +} + +static int +komeda_fb_none_afbc_size_check(struct komeda_dev *mdev, struct komeda_fb *kfb, + struct drm_file *file, + const struct drm_mode_fb_cmd2 *mode_cmd) +{ + struct drm_framebuffer *fb = &kfb->base; + const struct drm_format_info *info = fb->format; + struct drm_gem_object *obj; + u32 i, block_h; + u64 min_size; + + if (komeda_fb_check_src_coords(kfb, 0, 0, fb->width, fb->height)) + return -EINVAL; + + for (i = 0; i < info->num_planes; i++) { + obj = drm_gem_object_lookup(file, mode_cmd->handles[i]); + if (!obj) { + DRM_DEBUG_KMS("Failed to lookup GEM object\n"); + return -ENOENT; + } + fb->obj[i] = obj; + + block_h = drm_format_info_block_height(info, i); + if ((fb->pitches[i] * block_h) % mdev->chip.bus_width) { + DRM_DEBUG_KMS("Pitch[%d]: 0x%x doesn't align to 0x%x\n", + i, fb->pitches[i], mdev->chip.bus_width); + return -EINVAL; + } + + min_size = komeda_fb_get_pixel_addr(kfb, 0, fb->height, i) + - to_drm_gem_dma_obj(obj)->dma_addr; + if (obj->size < min_size) { + DRM_DEBUG_KMS("The fb->obj[%d] size: 0x%zx lower than the minimum requirement: 0x%llx.\n", + i, obj->size, min_size); + return -EINVAL; + } + } + + if (fb->format->num_planes == 3) { + if (fb->pitches[1] != fb->pitches[2]) { + DRM_DEBUG_KMS("The pitch[1] and [2] are not same\n"); + return -EINVAL; + } + } + + return 0; +} + +struct drm_framebuffer * +komeda_fb_create(struct drm_device *dev, struct drm_file *file, + const struct drm_mode_fb_cmd2 *mode_cmd) +{ + struct komeda_dev *mdev = dev->dev_private; + struct komeda_fb *kfb; + int ret = 0, i; + + kfb = kzalloc(sizeof(*kfb), GFP_KERNEL); + if (!kfb) + return ERR_PTR(-ENOMEM); + + kfb->format_caps = komeda_get_format_caps(&mdev->fmt_tbl, + mode_cmd->pixel_format, + mode_cmd->modifier[0]); + if (!kfb->format_caps) { + DRM_DEBUG_KMS("FMT %x is not supported.\n", + mode_cmd->pixel_format); + kfree(kfb); + return ERR_PTR(-EINVAL); + } + + drm_helper_mode_fill_fb_struct(dev, &kfb->base, mode_cmd); + + if (kfb->base.modifier) + ret = komeda_fb_afbc_size_check(kfb, file, mode_cmd); + else + ret = komeda_fb_none_afbc_size_check(mdev, kfb, file, mode_cmd); + if (ret < 0) + goto err_cleanup; + + ret = drm_framebuffer_init(dev, &kfb->base, &komeda_fb_funcs); + if (ret < 0) { + DRM_DEBUG_KMS("failed to initialize fb\n"); + + goto err_cleanup; + } + + kfb->is_va = mdev->iommu ? true : false; + + return &kfb->base; + +err_cleanup: + for (i = 0; i < kfb->base.format->num_planes; i++) + drm_gem_object_put(kfb->base.obj[i]); + + kfree(kfb); + return ERR_PTR(ret); +} + +int komeda_fb_check_src_coords(const struct komeda_fb *kfb, + u32 src_x, u32 src_y, u32 src_w, u32 src_h) +{ + const struct drm_framebuffer *fb = &kfb->base; + const struct drm_format_info *info = fb->format; + u32 block_w = drm_format_info_block_width(fb->format, 0); + u32 block_h = drm_format_info_block_height(fb->format, 0); + + if ((src_x + src_w > fb->width) || (src_y + src_h > fb->height)) { + DRM_DEBUG_ATOMIC("Invalid source coordinate.\n"); + return -EINVAL; + } + + if ((src_x % info->hsub) || (src_w % info->hsub) || + (src_y % info->vsub) || (src_h % info->vsub)) { + DRM_DEBUG_ATOMIC("Wrong subsampling dimension x:%d, y:%d, w:%d, h:%d for format: %x.\n", + src_x, src_y, src_w, src_h, info->format); + return -EINVAL; + } + + if ((src_x % block_w) || (src_w % block_w) || + (src_y % block_h) || (src_h % block_h)) { + DRM_DEBUG_ATOMIC("x:%d, y:%d, w:%d, h:%d should be multiple of block_w/h for format: %x.\n", + src_x, src_y, src_w, src_h, info->format); + return -EINVAL; + } + + return 0; +} + +dma_addr_t +komeda_fb_get_pixel_addr(struct komeda_fb *kfb, int x, int y, int plane) +{ + struct drm_framebuffer *fb = &kfb->base; + const struct drm_gem_dma_object *obj; + u32 offset, plane_x, plane_y, block_w, block_sz; + + if (plane >= fb->format->num_planes) { + DRM_DEBUG_KMS("Out of max plane num.\n"); + return -EINVAL; + } + + obj = drm_fb_dma_get_gem_obj(fb, plane); + + offset = fb->offsets[plane]; + if (!fb->modifier) { + block_w = drm_format_info_block_width(fb->format, plane); + block_sz = fb->format->char_per_block[plane]; + plane_x = x / (plane ? fb->format->hsub : 1); + plane_y = y / (plane ? fb->format->vsub : 1); + + offset += (plane_x / block_w) * block_sz + + plane_y * fb->pitches[plane]; + } + + return obj->dma_addr + offset; +} + +/* if the fb can be supported by a specific layer */ +bool komeda_fb_is_layer_supported(struct komeda_fb *kfb, u32 layer_type, + u32 rot) +{ + struct drm_framebuffer *fb = &kfb->base; + struct komeda_dev *mdev = fb->dev->dev_private; + u32 fourcc = fb->format->format; + u64 modifier = fb->modifier; + bool supported; + + supported = komeda_format_mod_supported(&mdev->fmt_tbl, layer_type, + fourcc, modifier, rot); + if (!supported) + DRM_DEBUG_ATOMIC("Layer TYPE: %d doesn't support fb FMT: %p4cc with modifier: 0x%llx.\n", + layer_type, &fourcc, modifier); + + return supported; +} |