dri-devel January 2022

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[PATCH v4 1/6] drm: move the buddy allocator from i915 into common drm
by Arunpravin 06 Jan '22

06 Jan '22

Move the base i915 buddy allocator code into drm - Move i915_buddy.h to include/drm - Move i915_buddy.c to drm root folder - Rename "i915" string with "drm" string wherever applicable - Rename "I915" string with "DRM" string wherever applicable - Fix header file dependencies - Fix alignment issues - add Makefile support for drm buddy - export functions and write kerneldoc description - Remove i915 selftest config check condition as buddy selftest will be moved to drm selftest folder cleanup i915 buddy references in i915 driver module and replace with drm buddy v2: - include header file in alphabetical order(Thomas) - merged changes listed in the body section into a single patch to keep the build intact(Christian, Jani) v3: - make drm buddy a separate module(Thomas, Christian) Signed-off-by: Arunpravin <Arunpravin.PaneerSelvam(a)amd.com> --- drivers/gpu/drm/Kconfig | 6 + drivers/gpu/drm/Makefile | 2 + drivers/gpu/drm/drm_buddy.c | 516 ++++++++++++++++++ drivers/gpu/drm/i915/Kconfig | 1 + drivers/gpu/drm/i915/Makefile | 1 - drivers/gpu/drm/i915/i915_buddy.c | 466 ---------------- drivers/gpu/drm/i915/i915_buddy.h | 143 ----- drivers/gpu/drm/i915/i915_module.c | 3 - drivers/gpu/drm/i915/i915_scatterlist.c | 11 +- drivers/gpu/drm/i915/i915_ttm_buddy_manager.c | 33 +- drivers/gpu/drm/i915/i915_ttm_buddy_manager.h | 4 +- include/drm/drm_buddy.h | 154 ++++++ 12 files changed, 703 insertions(+), 637 deletions(-) create mode 100644 drivers/gpu/drm/drm_buddy.c delete mode 100644 drivers/gpu/drm/i915/i915_buddy.c delete mode 100644 drivers/gpu/drm/i915/i915_buddy.h create mode 100644 include/drm/drm_buddy.h diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 0039df26854b..7a4a66d54782 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -197,6 +197,12 @@ config DRM_TTM GPU memory types. Will be enabled automatically if a device driver uses it. +config DRM_BUDDY + tristate + depends on DRM + help + A page based buddy allocator + config DRM_VRAM_HELPER tristate depends on DRM diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 0dff40bb863c..e62e432bf1e5 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -35,6 +35,8 @@ drm-$(CONFIG_DRM_LOAD_EDID_FIRMWARE) += drm_edid_load.o obj-$(CONFIG_DRM_DP_AUX_BUS) += drm_dp_aux_bus.o +obj-$(CONFIG_DRM_BUDDY) += drm_buddy.o + drm_vram_helper-y := drm_gem_vram_helper.o obj-$(CONFIG_DRM_VRAM_HELPER) += drm_vram_helper.o diff --git a/drivers/gpu/drm/drm_buddy.c b/drivers/gpu/drm/drm_buddy.c new file mode 100644 index 000000000000..9340a4b61c5a --- /dev/null +++ b/drivers/gpu/drm/drm_buddy.c @@ -0,0 +1,516 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2021 Intel Corporation + */ + +#include <linux/kmemleak.h> +#include <linux/module.h> +#include <linux/sizes.h> + +#include <drm/drm_buddy.h> + +static struct drm_buddy_block *drm_block_alloc(struct drm_buddy_mm *mm, + struct drm_buddy_block *parent, + unsigned int order, + u64 offset) +{ + struct drm_buddy_block *block; + + BUG_ON(order > DRM_BUDDY_MAX_ORDER); + + block = kmem_cache_zalloc(mm->slab_blocks, GFP_KERNEL); + if (!block) + return NULL; + + block->header = offset; + block->header |= order; + block->parent = parent; + + BUG_ON(block->header & DRM_BUDDY_HEADER_UNUSED); + return block; +} + +static void drm_block_free(struct drm_buddy_mm *mm, + struct drm_buddy_block *block) +{ + kmem_cache_free(mm->slab_blocks, block); +} + +static void mark_allocated(struct drm_buddy_block *block) +{ + block->header &= ~DRM_BUDDY_HEADER_STATE; + block->header |= DRM_BUDDY_ALLOCATED; + + list_del(&block->link); +} + +static void mark_free(struct drm_buddy_mm *mm, + struct drm_buddy_block *block) +{ + block->header &= ~DRM_BUDDY_HEADER_STATE; + block->header |= DRM_BUDDY_FREE; + + list_add(&block->link, + &mm->free_list[drm_buddy_block_order(block)]); +} + +static void mark_split(struct drm_buddy_block *block) +{ + block->header &= ~DRM_BUDDY_HEADER_STATE; + block->header |= DRM_BUDDY_SPLIT; + + list_del(&block->link); +} + +/** + * drm_buddy_init - init memory manager + * + * @mm: DRM buddy manager to initialize + * @size: size in bytes to manage + * @chunk_size: minimum page size in bytes for our allocations + * + * Initializes the memory manager and its resources. + * + * Returns: + * 0 on success, error code on failure. + */ +int drm_buddy_init(struct drm_buddy_mm *mm, u64 size, u64 chunk_size) +{ + unsigned int i; + u64 offset; + + if (size < chunk_size) + return -EINVAL; + + if (chunk_size < PAGE_SIZE) + return -EINVAL; + + if (!is_power_of_2(chunk_size)) + return -EINVAL; + + size = round_down(size, chunk_size); + + mm->size = size; + mm->avail = size; + mm->chunk_size = chunk_size; + mm->max_order = ilog2(size) - ilog2(chunk_size); + + BUG_ON(mm->max_order > DRM_BUDDY_MAX_ORDER); + + mm->slab_blocks = KMEM_CACHE(drm_buddy_block, 0); + if (!mm->slab_blocks) + return -ENOMEM; + + mm->free_list = kmalloc_array(mm->max_order + 1, + sizeof(struct list_head), + GFP_KERNEL); + if (!mm->free_list) + goto out_destroy_slab; + + for (i = 0; i <= mm->max_order; ++i) + INIT_LIST_HEAD(&mm->free_list[i]); + + mm->n_roots = hweight64(size); + + mm->roots = kmalloc_array(mm->n_roots, + sizeof(struct drm_buddy_block *), + GFP_KERNEL); + if (!mm->roots) + goto out_free_list; + + offset = 0; + i = 0; + + /* + * Split into power-of-two blocks, in case we are given a size that is + * not itself a power-of-two. + */ + do { + struct drm_buddy_block *root; + unsigned int order; + u64 root_size; + + root_size = rounddown_pow_of_two(size); + order = ilog2(root_size) - ilog2(chunk_size); + + root = drm_block_alloc(mm, NULL, order, offset); + if (!root) + goto out_free_roots; + + mark_free(mm, root); + + BUG_ON(i > mm->max_order); + BUG_ON(drm_buddy_block_size(mm, root) < chunk_size); + + mm->roots[i] = root; + + offset += root_size; + size -= root_size; + i++; + } while (size); + + return 0; + +out_free_roots: + while (i--) + drm_block_free(mm, mm->roots[i]); + kfree(mm->roots); +out_free_list: + kfree(mm->free_list); +out_destroy_slab: + kmem_cache_destroy(mm->slab_blocks); + return -ENOMEM; +} +EXPORT_SYMBOL(drm_buddy_init); + +/** + * drm_buddy_fini - tear down the memory manager + * + * @mm: DRM buddy manager to free + * + * Cleanup memory manager resources and the freelist + */ +void drm_buddy_fini(struct drm_buddy_mm *mm) +{ + int i; + + for (i = 0; i < mm->n_roots; ++i) { + WARN_ON(!drm_buddy_block_is_free(mm->roots[i])); + drm_block_free(mm, mm->roots[i]); + } + + WARN_ON(mm->avail != mm->size); + + kfree(mm->roots); + kfree(mm->free_list); + kmem_cache_destroy(mm->slab_blocks); +} +EXPORT_SYMBOL(drm_buddy_fini); + +static int split_block(struct drm_buddy_mm *mm, + struct drm_buddy_block *block) +{ + unsigned int block_order = drm_buddy_block_order(block) - 1; + u64 offset = drm_buddy_block_offset(block); + + BUG_ON(!drm_buddy_block_is_free(block)); + BUG_ON(!drm_buddy_block_order(block)); + + block->left = drm_block_alloc(mm, block, block_order, offset); + if (!block->left) + return -ENOMEM; + + block->right = drm_block_alloc(mm, block, block_order, + offset + (mm->chunk_size << block_order)); + if (!block->right) { + drm_block_free(mm, block->left); + return -ENOMEM; + } + + mark_free(mm, block->left); + mark_free(mm, block->right); + + mark_split(block); + + return 0; +} + +static struct drm_buddy_block * +get_buddy(struct drm_buddy_block *block) +{ + struct drm_buddy_block *parent; + + parent = block->parent; + if (!parent) + return NULL; + + if (parent->left == block) + return parent->right; + + return parent->left; +} + +static void __drm_buddy_free(struct drm_buddy_mm *mm, + struct drm_buddy_block *block) +{ + struct drm_buddy_block *parent; + + while ((parent = block->parent)) { + struct drm_buddy_block *buddy; + + buddy = get_buddy(block); + + if (!drm_buddy_block_is_free(buddy)) + break; + + list_del(&buddy->link); + + drm_block_free(mm, block); + drm_block_free(mm, buddy); + + block = parent; + } + + mark_free(mm, block); +} + +void drm_buddy_free(struct drm_buddy_mm *mm, + struct drm_buddy_block *block) +{ + BUG_ON(!drm_buddy_block_is_allocated(block)); + mm->avail += drm_buddy_block_size(mm, block); + __drm_buddy_free(mm, block); +} + +/** + * drm_buddy_free_list - free blocks + * + * @mm: DRM buddy manager + * @objects: input list head to free blocks + */ +void drm_buddy_free_list(struct drm_buddy_mm *mm, struct list_head *objects) +{ + struct drm_buddy_block *block, *on; + + list_for_each_entry_safe(block, on, objects, link) { + drm_buddy_free(mm, block); + cond_resched(); + } + INIT_LIST_HEAD(objects); +} +EXPORT_SYMBOL(drm_buddy_free_list); + +/** + * drm_buddy_alloc - allocate power-of-two blocks + * + * @mm: DRM buddy manager to allocate from + * @order: size of the allocation + * + * The order value here translates to: + * + * 0 = 2^0 * mm->chunk_size + * 1 = 2^1 * mm->chunk_size + * 2 = 2^2 * mm->chunk_size + * + * Returns: + * allocated ptr to the &drm_buddy_block on success + */ +struct drm_buddy_block * +drm_buddy_alloc(struct drm_buddy_mm *mm, unsigned int order) +{ + struct drm_buddy_block *block = NULL; + unsigned int i; + int err; + + for (i = order; i <= mm->max_order; ++i) { + block = list_first_entry_or_null(&mm->free_list[i], + struct drm_buddy_block, + link); + if (block) + break; + } + + if (!block) + return ERR_PTR(-ENOSPC); + + BUG_ON(!drm_buddy_block_is_free(block)); + + while (i != order) { + err = split_block(mm, block); + if (unlikely(err)) + goto out_free; + + /* Go low */ + block = block->left; + i--; + } + + mark_allocated(block); + mm->avail -= drm_buddy_block_size(mm, block); + kmemleak_update_trace(block); + return block; + +out_free: + if (i != order) + __drm_buddy_free(mm, block); + return ERR_PTR(err); +} +EXPORT_SYMBOL(drm_buddy_alloc); + +static inline bool overlaps(u64 s1, u64 e1, u64 s2, u64 e2) +{ + return s1 <= e2 && e1 >= s2; +} + +static inline bool contains(u64 s1, u64 e1, u64 s2, u64 e2) +{ + return s1 <= s2 && e1 >= e2; +} + +/** + * drm_buddy_alloc_range - allocate range + * + * @mm: DRM buddy manager to allocate from + * @blocks: output list head to add allocated blocks + * @start: start of the allowed range for this block + * @size: size of the allocation + * + * Intended for pre-allocating portions of the address space, for example to + * reserve a block for the initial framebuffer or similar, hence the expectation + * here is that drm_buddy_alloc() is still the main vehicle for + * allocations, so if that's not the case then the drm_mm range allocator is + * probably a much better fit, and so you should probably go use that instead. + * + * Note that it's safe to chain together multiple alloc_ranges + * with the same blocks list + * + * Returns: + * 0 on success, error code on failure. + */ +int drm_buddy_alloc_range(struct drm_buddy_mm *mm, + struct list_head *blocks, + u64 start, u64 size) +{ + struct drm_buddy_block *block; + struct drm_buddy_block *buddy; + LIST_HEAD(allocated); + LIST_HEAD(dfs); + u64 end; + int err; + int i; + + if (size < mm->chunk_size) + return -EINVAL; + + if (!IS_ALIGNED(size | start, mm->chunk_size)) + return -EINVAL; + + if (range_overflows(start, size, mm->size)) + return -EINVAL; + + for (i = 0; i < mm->n_roots; ++i) + list_add_tail(&mm->roots[i]->tmp_link, &dfs); + + end = start + size - 1; + + do { + u64 block_start; + u64 block_end; + + block = list_first_entry_or_null(&dfs, + struct drm_buddy_block, + tmp_link); + if (!block) + break; + + list_del(&block->tmp_link); + + block_start = drm_buddy_block_offset(block); + block_end = block_start + drm_buddy_block_size(mm, block) - 1; + + if (!overlaps(start, end, block_start, block_end)) + continue; + + if (drm_buddy_block_is_allocated(block)) { + err = -ENOSPC; + goto err_free; + } + + if (contains(start, end, block_start, block_end)) { + if (!drm_buddy_block_is_free(block)) { + err = -ENOSPC; + goto err_free; + } + + mark_allocated(block); + mm->avail -= drm_buddy_block_size(mm, block); + list_add_tail(&block->link, &allocated); + continue; + } + + if (!drm_buddy_block_is_split(block)) { + err = split_block(mm, block); + if (unlikely(err)) + goto err_undo; + } + + list_add(&block->right->tmp_link, &dfs); + list_add(&block->left->tmp_link, &dfs); + } while (1); + + list_splice_tail(&allocated, blocks); + return 0; + +err_undo: + /* + * We really don't want to leave around a bunch of split blocks, since + * bigger is better, so make sure we merge everything back before we + * free the allocated blocks. + */ + buddy = get_buddy(block); + if (buddy && + (drm_buddy_block_is_free(block) && + drm_buddy_block_is_free(buddy))) + __drm_buddy_free(mm, block); + +err_free: + drm_buddy_free_list(mm, &allocated); + return err; +} +EXPORT_SYMBOL(drm_buddy_alloc_range); + +/** + * drm_buddy_block_print - print block information + * + * @mm: DRM buddy manager + * @block: DRM buddy block + * @p: DRM printer to use + */ +void drm_buddy_block_print(struct drm_buddy_mm *mm, + struct drm_buddy_block *block, + struct drm_printer *p) +{ + u64 start = drm_buddy_block_offset(block); + u64 size = drm_buddy_block_size(mm, block); + + drm_printf(p, "%#018llx-%#018llx: %llu\n", start, start + size, size); +} +EXPORT_SYMBOL(drm_buddy_block_print); + +/** + * drm_buddy_print - print allocator state + * + * @mm: DRM buddy manager + * @p: DRM printer to use + */ +void drm_buddy_print(struct drm_buddy_mm *mm, struct drm_printer *p) +{ + int order; + + drm_printf(p, "chunk_size: %lluKiB, total: %lluMiB, free: %lluMiB\n", + mm->chunk_size >> 10, mm->size >> 20, mm->avail >> 20); + + for (order = mm->max_order; order >= 0; order--) { + struct drm_buddy_block *block; + u64 count = 0, free; + + list_for_each_entry(block, &mm->free_list[order], link) { + BUG_ON(!drm_buddy_block_is_free(block)); + count++; + } + + drm_printf(p, "order-%d ", order); + + free = count * (mm->chunk_size << order); + if (free < SZ_1M) + drm_printf(p, "free: %lluKiB", free >> 10); + else + drm_printf(p, "free: %lluMiB", free >> 20); + + drm_printf(p, ", pages: %llu\n", count); + } +} +EXPORT_SYMBOL(drm_buddy_print); + +MODULE_DESCRIPTION("DRM Buddy Allocator"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig index a4c94dc2e216..64b5e0a44d4c 100644 --- a/drivers/gpu/drm/i915/Kconfig +++ b/drivers/gpu/drm/i915/Kconfig @@ -27,6 +27,7 @@ config DRM_I915 select CEC_CORE if CEC_NOTIFIER select VMAP_PFN select DRM_TTM + select DRM_BUDDY help Choose this option if you have a system that has "Intel Graphics Media Accelerator" or "HD Graphics" integrated graphics, diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index 568d711a3537..a5a0fb33c897 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -161,7 +161,6 @@ gem-y += \ i915-y += \ $(gem-y) \ i915_active.o \ - i915_buddy.o \ i915_cmd_parser.o \ i915_gem_evict.o \ i915_gem_gtt.o \ diff --git a/drivers/gpu/drm/i915/i915_buddy.c b/drivers/gpu/drm/i915/i915_buddy.c deleted file mode 100644 index 6e2ad68f8f3f..000000000000 --- a/drivers/gpu/drm/i915/i915_buddy.c +++ /dev/null @@ -1,466 +0,0 @@ -// SPDX-License-Identifier: MIT -/* - * Copyright © 2021 Intel Corporation - */ - -#include <linux/kmemleak.h> -#include <linux/sizes.h> - -#include "i915_buddy.h" - -#include "i915_gem.h" -#include "i915_utils.h" - -static struct kmem_cache *slab_blocks; - -static struct i915_buddy_block *i915_block_alloc(struct i915_buddy_mm *mm, - struct i915_buddy_block *parent, - unsigned int order, - u64 offset) -{ - struct i915_buddy_block *block; - - GEM_BUG_ON(order > I915_BUDDY_MAX_ORDER); - - block = kmem_cache_zalloc(slab_blocks, GFP_KERNEL); - if (!block) - return NULL; - - block->header = offset; - block->header |= order; - block->parent = parent; - - GEM_BUG_ON(block->header & I915_BUDDY_HEADER_UNUSED); - return block; -} - -static void i915_block_free(struct i915_buddy_mm *mm, - struct i915_buddy_block *block) -{ - kmem_cache_free(slab_blocks, block); -} - -static void mark_allocated(struct i915_buddy_block *block) -{ - block->header &= ~I915_BUDDY_HEADER_STATE; - block->header |= I915_BUDDY_ALLOCATED; - - list_del(&block->link); -} - -static void mark_free(struct i915_buddy_mm *mm, - struct i915_buddy_block *block) -{ - block->header &= ~I915_BUDDY_HEADER_STATE; - block->header |= I915_BUDDY_FREE; - - list_add(&block->link, - &mm->free_list[i915_buddy_block_order(block)]); -} - -static void mark_split(struct i915_buddy_block *block) -{ - block->header &= ~I915_BUDDY_HEADER_STATE; - block->header |= I915_BUDDY_SPLIT; - - list_del(&block->link); -} - -int i915_buddy_init(struct i915_buddy_mm *mm, u64 size, u64 chunk_size) -{ - unsigned int i; - u64 offset; - - if (size < chunk_size) - return -EINVAL; - - if (chunk_size < PAGE_SIZE) - return -EINVAL; - - if (!is_power_of_2(chunk_size)) - return -EINVAL; - - size = round_down(size, chunk_size); - - mm->size = size; - mm->avail = size; - mm->chunk_size = chunk_size; - mm->max_order = ilog2(size) - ilog2(chunk_size); - - GEM_BUG_ON(mm->max_order > I915_BUDDY_MAX_ORDER); - - mm->free_list = kmalloc_array(mm->max_order + 1, - sizeof(struct list_head), - GFP_KERNEL); - if (!mm->free_list) - return -ENOMEM; - - for (i = 0; i <= mm->max_order; ++i) - INIT_LIST_HEAD(&mm->free_list[i]); - - mm->n_roots = hweight64(size); - - mm->roots = kmalloc_array(mm->n_roots, - sizeof(struct i915_buddy_block *), - GFP_KERNEL); - if (!mm->roots) - goto out_free_list; - - offset = 0; - i = 0; - - /* - * Split into power-of-two blocks, in case we are given a size that is - * not itself a power-of-two. - */ - do { - struct i915_buddy_block *root; - unsigned int order; - u64 root_size; - - root_size = rounddown_pow_of_two(size); - order = ilog2(root_size) - ilog2(chunk_size); - - root = i915_block_alloc(mm, NULL, order, offset); - if (!root) - goto out_free_roots; - - mark_free(mm, root); - - GEM_BUG_ON(i > mm->max_order); - GEM_BUG_ON(i915_buddy_block_size(mm, root) < chunk_size); - - mm->roots[i] = root; - - offset += root_size; - size -= root_size; - i++; - } while (size); - - return 0; - -out_free_roots: - while (i--) - i915_block_free(mm, mm->roots[i]); - kfree(mm->roots); -out_free_list: - kfree(mm->free_list); - return -ENOMEM; -} - -void i915_buddy_fini(struct i915_buddy_mm *mm) -{ - int i; - - for (i = 0; i < mm->n_roots; ++i) { - GEM_WARN_ON(!i915_buddy_block_is_free(mm->roots[i])); - i915_block_free(mm, mm->roots[i]); - } - - GEM_WARN_ON(mm->avail != mm->size); - - kfree(mm->roots); - kfree(mm->free_list); -} - -static int split_block(struct i915_buddy_mm *mm, - struct i915_buddy_block *block) -{ - unsigned int block_order = i915_buddy_block_order(block) - 1; - u64 offset = i915_buddy_block_offset(block); - - GEM_BUG_ON(!i915_buddy_block_is_free(block)); - GEM_BUG_ON(!i915_buddy_block_order(block)); - - block->left = i915_block_alloc(mm, block, block_order, offset); - if (!block->left) - return -ENOMEM; - - block->right = i915_block_alloc(mm, block, block_order, - offset + (mm->chunk_size << block_order)); - if (!block->right) { - i915_block_free(mm, block->left); - return -ENOMEM; - } - - mark_free(mm, block->left); - mark_free(mm, block->right); - - mark_split(block); - - return 0; -} - -static struct i915_buddy_block * -get_buddy(struct i915_buddy_block *block) -{ - struct i915_buddy_block *parent; - - parent = block->parent; - if (!parent) - return NULL; - - if (parent->left == block) - return parent->right; - - return parent->left; -} - -static void __i915_buddy_free(struct i915_buddy_mm *mm, - struct i915_buddy_block *block) -{ - struct i915_buddy_block *parent; - - while ((parent = block->parent)) { - struct i915_buddy_block *buddy; - - buddy = get_buddy(block); - - if (!i915_buddy_block_is_free(buddy)) - break; - - list_del(&buddy->link); - - i915_block_free(mm, block); - i915_block_free(mm, buddy); - - block = parent; - } - - mark_free(mm, block); -} - -void i915_buddy_free(struct i915_buddy_mm *mm, - struct i915_buddy_block *block) -{ - GEM_BUG_ON(!i915_buddy_block_is_allocated(block)); - mm->avail += i915_buddy_block_size(mm, block); - __i915_buddy_free(mm, block); -} - -void i915_buddy_free_list(struct i915_buddy_mm *mm, struct list_head *objects) -{ - struct i915_buddy_block *block, *on; - - list_for_each_entry_safe(block, on, objects, link) { - i915_buddy_free(mm, block); - cond_resched(); - } - INIT_LIST_HEAD(objects); -} - -/* - * Allocate power-of-two block. The order value here translates to: - * - * 0 = 2^0 * mm->chunk_size - * 1 = 2^1 * mm->chunk_size - * 2 = 2^2 * mm->chunk_size - * ... - */ -struct i915_buddy_block * -i915_buddy_alloc(struct i915_buddy_mm *mm, unsigned int order) -{ - struct i915_buddy_block *block = NULL; - unsigned int i; - int err; - - for (i = order; i <= mm->max_order; ++i) { - block = list_first_entry_or_null(&mm->free_list[i], - struct i915_buddy_block, - link); - if (block) - break; - } - - if (!block) - return ERR_PTR(-ENOSPC); - - GEM_BUG_ON(!i915_buddy_block_is_free(block)); - - while (i != order) { - err = split_block(mm, block); - if (unlikely(err)) - goto out_free; - - /* Go low */ - block = block->left; - i--; - } - - mark_allocated(block); - mm->avail -= i915_buddy_block_size(mm, block); - kmemleak_update_trace(block); - return block; - -out_free: - if (i != order) - __i915_buddy_free(mm, block); - return ERR_PTR(err); -} - -static inline bool overlaps(u64 s1, u64 e1, u64 s2, u64 e2) -{ - return s1 <= e2 && e1 >= s2; -} - -static inline bool contains(u64 s1, u64 e1, u64 s2, u64 e2) -{ - return s1 <= s2 && e1 >= e2; -} - -/* - * Allocate range. Note that it's safe to chain together multiple alloc_ranges - * with the same blocks list. - * - * Intended for pre-allocating portions of the address space, for example to - * reserve a block for the initial framebuffer or similar, hence the expectation - * here is that i915_buddy_alloc() is still the main vehicle for - * allocations, so if that's not the case then the drm_mm range allocator is - * probably a much better fit, and so you should probably go use that instead. - */ -int i915_buddy_alloc_range(struct i915_buddy_mm *mm, - struct list_head *blocks, - u64 start, u64 size) -{ - struct i915_buddy_block *block; - struct i915_buddy_block *buddy; - LIST_HEAD(allocated); - LIST_HEAD(dfs); - u64 end; - int err; - int i; - - if (size < mm->chunk_size) - return -EINVAL; - - if (!IS_ALIGNED(size | start, mm->chunk_size)) - return -EINVAL; - - if (range_overflows(start, size, mm->size)) - return -EINVAL; - - for (i = 0; i < mm->n_roots; ++i) - list_add_tail(&mm->roots[i]->tmp_link, &dfs); - - end = start + size - 1; - - do { - u64 block_start; - u64 block_end; - - block = list_first_entry_or_null(&dfs, - struct i915_buddy_block, - tmp_link); - if (!block) - break; - - list_del(&block->tmp_link); - - block_start = i915_buddy_block_offset(block); - block_end = block_start + i915_buddy_block_size(mm, block) - 1; - - if (!overlaps(start, end, block_start, block_end)) - continue; - - if (i915_buddy_block_is_allocated(block)) { - err = -ENOSPC; - goto err_free; - } - - if (contains(start, end, block_start, block_end)) { - if (!i915_buddy_block_is_free(block)) { - err = -ENOSPC; - goto err_free; - } - - mark_allocated(block); - mm->avail -= i915_buddy_block_size(mm, block); - list_add_tail(&block->link, &allocated); - continue; - } - - if (!i915_buddy_block_is_split(block)) { - err = split_block(mm, block); - if (unlikely(err)) - goto err_undo; - } - - list_add(&block->right->tmp_link, &dfs); - list_add(&block->left->tmp_link, &dfs); - } while (1); - - list_splice_tail(&allocated, blocks); - return 0; - -err_undo: - /* - * We really don't want to leave around a bunch of split blocks, since - * bigger is better, so make sure we merge everything back before we - * free the allocated blocks. - */ - buddy = get_buddy(block); - if (buddy && - (i915_buddy_block_is_free(block) && - i915_buddy_block_is_free(buddy))) - __i915_buddy_free(mm, block); - -err_free: - i915_buddy_free_list(mm, &allocated); - return err; -} - -void i915_buddy_block_print(struct i915_buddy_mm *mm, - struct i915_buddy_block *block, - struct drm_printer *p) -{ - u64 start = i915_buddy_block_offset(block); - u64 size = i915_buddy_block_size(mm, block); - - drm_printf(p, "%#018llx-%#018llx: %llu\n", start, start + size, size); -} - -void i915_buddy_print(struct i915_buddy_mm *mm, struct drm_printer *p) -{ - int order; - - drm_printf(p, "chunk_size: %lluKiB, total: %lluMiB, free: %lluMiB\n", - mm->chunk_size >> 10, mm->size >> 20, mm->avail >> 20); - - for (order = mm->max_order; order >= 0; order--) { - struct i915_buddy_block *block; - u64 count = 0, free; - - list_for_each_entry(block, &mm->free_list[order], link) { - GEM_BUG_ON(!i915_buddy_block_is_free(block)); - count++; - } - - drm_printf(p, "order-%d ", order); - - free = count * (mm->chunk_size << order); - if (free < SZ_1M) - drm_printf(p, "free: %lluKiB", free >> 10); - else - drm_printf(p, "free: %lluMiB", free >> 20); - - drm_printf(p, ", pages: %llu\n", count); - } -} - -#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) -#include "selftests/i915_buddy.c" -#endif - -void i915_buddy_module_exit(void) -{ - kmem_cache_destroy(slab_blocks); -} - -int __init i915_buddy_module_init(void) -{ - slab_blocks = KMEM_CACHE(i915_buddy_block, 0); - if (!slab_blocks) - return -ENOMEM; - - return 0; -} diff --git a/drivers/gpu/drm/i915/i915_buddy.h b/drivers/gpu/drm/i915/i915_buddy.h deleted file mode 100644 index 7077742112ac..000000000000 --- a/drivers/gpu/drm/i915/i915_buddy.h +++ /dev/null @@ -1,143 +0,0 @@ -/* SPDX-License-Identifier: MIT */ -/* - * Copyright © 2021 Intel Corporation - */ - -#ifndef __I915_BUDDY_H__ -#define __I915_BUDDY_H__ - -#include <linux/bitops.h> -#include <linux/list.h> -#include <linux/slab.h> - -#include <drm/drm_print.h> - -struct i915_buddy_block { -#define I915_BUDDY_HEADER_OFFSET GENMASK_ULL(63, 12) -#define I915_BUDDY_HEADER_STATE GENMASK_ULL(11, 10) -#define I915_BUDDY_ALLOCATED (1 << 10) -#define I915_BUDDY_FREE (2 << 10) -#define I915_BUDDY_SPLIT (3 << 10) -/* Free to be used, if needed in the future */ -#define I915_BUDDY_HEADER_UNUSED GENMASK_ULL(9, 6) -#define I915_BUDDY_HEADER_ORDER GENMASK_ULL(5, 0) - u64 header; - - struct i915_buddy_block *left; - struct i915_buddy_block *right; - struct i915_buddy_block *parent; - - void *private; /* owned by creator */ - - /* - * While the block is allocated by the user through i915_buddy_alloc*, - * the user has ownership of the link, for example to maintain within - * a list, if so desired. As soon as the block is freed with - * i915_buddy_free* ownership is given back to the mm. - */ - struct list_head link; - struct list_head tmp_link; -}; - -/* Order-zero must be at least PAGE_SIZE */ -#define I915_BUDDY_MAX_ORDER (63 - PAGE_SHIFT) - -/* - * Binary Buddy System. - * - * Locking should be handled by the user, a simple mutex around - * i915_buddy_alloc* and i915_buddy_free* should suffice. - */ -struct i915_buddy_mm { - /* Maintain a free list for each order. */ - struct list_head *free_list; - - /* - * Maintain explicit binary tree(s) to track the allocation of the - * address space. This gives us a simple way of finding a buddy block - * and performing the potentially recursive merge step when freeing a - * block. Nodes are either allocated or free, in which case they will - * also exist on the respective free list. - */ - struct i915_buddy_block **roots; - - /* - * Anything from here is public, and remains static for the lifetime of - * the mm. Everything above is considered do-not-touch. - */ - unsigned int n_roots; - unsigned int max_order; - - /* Must be at least PAGE_SIZE */ - u64 chunk_size; - u64 size; - u64 avail; -}; - -static inline u64 -i915_buddy_block_offset(struct i915_buddy_block *block) -{ - return block->header & I915_BUDDY_HEADER_OFFSET; -} - -static inline unsigned int -i915_buddy_block_order(struct i915_buddy_block *block) -{ - return block->header & I915_BUDDY_HEADER_ORDER; -} - -static inline unsigned int -i915_buddy_block_state(struct i915_buddy_block *block) -{ - return block->header & I915_BUDDY_HEADER_STATE; -} - -static inline bool -i915_buddy_block_is_allocated(struct i915_buddy_block *block) -{ - return i915_buddy_block_state(block) == I915_BUDDY_ALLOCATED; -} - -static inline bool -i915_buddy_block_is_free(struct i915_buddy_block *block) -{ - return i915_buddy_block_state(block) == I915_BUDDY_FREE; -} - -static inline bool -i915_buddy_block_is_split(struct i915_buddy_block *block) -{ - return i915_buddy_block_state(block) == I915_BUDDY_SPLIT; -} - -static inline u64 -i915_buddy_block_size(struct i915_buddy_mm *mm, - struct i915_buddy_block *block) -{ - return mm->chunk_size << i915_buddy_block_order(block); -} - -int i915_buddy_init(struct i915_buddy_mm *mm, u64 size, u64 chunk_size); - -void i915_buddy_fini(struct i915_buddy_mm *mm); - -struct i915_buddy_block * -i915_buddy_alloc(struct i915_buddy_mm *mm, unsigned int order); - -int i915_buddy_alloc_range(struct i915_buddy_mm *mm, - struct list_head *blocks, - u64 start, u64 size); - -void i915_buddy_free(struct i915_buddy_mm *mm, struct i915_buddy_block *block); - -void i915_buddy_free_list(struct i915_buddy_mm *mm, struct list_head *objects); - -void i915_buddy_print(struct i915_buddy_mm *mm, struct drm_printer *p); -void i915_buddy_block_print(struct i915_buddy_mm *mm, - struct i915_buddy_block *block, - struct drm_printer *p); - -void i915_buddy_module_exit(void); -int i915_buddy_module_init(void); - -#endif diff --git a/drivers/gpu/drm/i915/i915_module.c b/drivers/gpu/drm/i915/i915_module.c index c7507266aa83..355681dbd7a8 100644 --- a/drivers/gpu/drm/i915/i915_module.c +++ b/drivers/gpu/drm/i915/i915_module.c @@ -9,7 +9,6 @@ #include "gem/i915_gem_context.h" #include "gem/i915_gem_object.h" #include "i915_active.h" -#include "i915_buddy.h" #include "i915_params.h" #include "i915_pci.h" #include "i915_perf.h" @@ -50,8 +49,6 @@ static const struct { { .init = i915_check_nomodeset }, { .init = i915_active_module_init, .exit = i915_active_module_exit }, - { .init = i915_buddy_module_init, - .exit = i915_buddy_module_exit }, { .init = i915_context_module_init, .exit = i915_context_module_exit }, { .init = i915_gem_context_module_init, diff --git a/drivers/gpu/drm/i915/i915_scatterlist.c b/drivers/gpu/drm/i915/i915_scatterlist.c index 4a6712dca838..84d622aa32d2 100644 --- a/drivers/gpu/drm/i915/i915_scatterlist.c +++ b/drivers/gpu/drm/i915/i915_scatterlist.c @@ -5,10 +5,9 @@ */ #include "i915_scatterlist.h" - -#include "i915_buddy.h" #include "i915_ttm_buddy_manager.h" +#include <drm/drm_buddy.h> #include <drm/drm_mm.h> #include <linux/slab.h> @@ -126,9 +125,9 @@ struct sg_table *i915_sg_from_buddy_resource(struct ttm_resource *res, struct i915_ttm_buddy_resource *bman_res = to_ttm_buddy_resource(res); const u64 size = res->num_pages << PAGE_SHIFT; const u64 max_segment = rounddown(UINT_MAX, PAGE_SIZE); - struct i915_buddy_mm *mm = bman_res->mm; + struct drm_buddy_mm *mm = bman_res->mm; struct list_head *blocks = &bman_res->blocks; - struct i915_buddy_block *block; + struct drm_buddy_block *block; struct scatterlist *sg; struct sg_table *st; resource_size_t prev_end; @@ -151,8 +150,8 @@ struct sg_table *i915_sg_from_buddy_resource(struct ttm_resource *res, list_for_each_entry(block, blocks, link) { u64 block_size, offset; - block_size = min_t(u64, size, i915_buddy_block_size(mm, block)); - offset = i915_buddy_block_offset(block); + block_size = min_t(u64, size, drm_buddy_block_size(mm, block)); + offset = drm_buddy_block_offset(block); while (block_size) { u64 len; diff --git a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c index d59fbb019032..c4b70cb8c248 100644 --- a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c +++ b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.c @@ -8,14 +8,15 @@ #include <drm/ttm/ttm_bo_driver.h> #include <drm/ttm/ttm_placement.h> +#include <drm/drm_buddy.h> + #include "i915_ttm_buddy_manager.h" -#include "i915_buddy.h" #include "i915_gem.h" struct i915_ttm_buddy_manager { struct ttm_resource_manager manager; - struct i915_buddy_mm mm; + struct drm_buddy_mm mm; struct list_head reserved; struct mutex lock; u64 default_page_size; @@ -34,7 +35,7 @@ static int i915_ttm_buddy_man_alloc(struct ttm_resource_manager *man, { struct i915_ttm_buddy_manager *bman = to_buddy_manager(man); struct i915_ttm_buddy_resource *bman_res; - struct i915_buddy_mm *mm = &bman->mm; + struct drm_buddy_mm *mm = &bman->mm; unsigned long n_pages; unsigned int min_order; u64 min_page_size; @@ -73,7 +74,7 @@ static int i915_ttm_buddy_man_alloc(struct ttm_resource_manager *man, n_pages = size >> ilog2(mm->chunk_size); do { - struct i915_buddy_block *block; + struct drm_buddy_block *block; unsigned int order; order = fls(n_pages) - 1; @@ -82,7 +83,7 @@ static int i915_ttm_buddy_man_alloc(struct ttm_resource_manager *man, do { mutex_lock(&bman->lock); - block = i915_buddy_alloc(mm, order); + block = drm_buddy_alloc(mm, order); mutex_unlock(&bman->lock); if (!IS_ERR(block)) break; @@ -106,7 +107,7 @@ static int i915_ttm_buddy_man_alloc(struct ttm_resource_manager *man, err_free_blocks: mutex_lock(&bman->lock); - i915_buddy_free_list(mm, &bman_res->blocks); + drm_buddy_free_list(mm, &bman_res->blocks); mutex_unlock(&bman->lock); err_free_res: kfree(bman_res); @@ -120,7 +121,7 @@ static void i915_ttm_buddy_man_free(struct ttm_resource_manager *man, struct i915_ttm_buddy_manager *bman = to_buddy_manager(man); mutex_lock(&bman->lock); - i915_buddy_free_list(&bman->mm, &bman_res->blocks); + drm_buddy_free_list(&bman->mm, &bman_res->blocks); mutex_unlock(&bman->lock); kfree(bman_res); @@ -130,17 +131,17 @@ static void i915_ttm_buddy_man_debug(struct ttm_resource_manager *man, struct drm_printer *printer) { struct i915_ttm_buddy_manager *bman = to_buddy_manager(man); - struct i915_buddy_block *block; + struct drm_buddy_block *block; mutex_lock(&bman->lock); drm_printf(printer, "default_page_size: %lluKiB\n", bman->default_page_size >> 10); - i915_buddy_print(&bman->mm, printer); + drm_buddy_print(&bman->mm, printer); drm_printf(printer, "reserved:\n"); list_for_each_entry(block, &bman->reserved, link) - i915_buddy_block_print(&bman->mm, block, printer); + drm_buddy_block_print(&bman->mm, block, printer); mutex_unlock(&bman->lock); } @@ -190,7 +191,7 @@ int i915_ttm_buddy_man_init(struct ttm_device *bdev, if (!bman) return -ENOMEM; - err = i915_buddy_init(&bman->mm, size, chunk_size); + err = drm_buddy_init(&bman->mm, size, chunk_size); if (err) goto err_free_bman; @@ -228,7 +229,7 @@ int i915_ttm_buddy_man_fini(struct ttm_device *bdev, unsigned int type) { struct ttm_resource_manager *man = ttm_manager_type(bdev, type); struct i915_ttm_buddy_manager *bman = to_buddy_manager(man); - struct i915_buddy_mm *mm = &bman->mm; + struct drm_buddy_mm *mm = &bman->mm; int ret; ttm_resource_manager_set_used(man, false); @@ -240,8 +241,8 @@ int i915_ttm_buddy_man_fini(struct ttm_device *bdev, unsigned int type) ttm_set_driver_manager(bdev, type, NULL); mutex_lock(&bman->lock); - i915_buddy_free_list(mm, &bman->reserved); - i915_buddy_fini(mm); + drm_buddy_free_list(mm, &bman->reserved); + drm_buddy_fini(mm); mutex_unlock(&bman->lock); ttm_resource_manager_cleanup(man); @@ -264,11 +265,11 @@ int i915_ttm_buddy_man_reserve(struct ttm_resource_manager *man, u64 start, u64 size) { struct i915_ttm_buddy_manager *bman = to_buddy_manager(man); - struct i915_buddy_mm *mm = &bman->mm; + struct drm_buddy_mm *mm = &bman->mm; int ret; mutex_lock(&bman->lock); - ret = i915_buddy_alloc_range(mm, &bman->reserved, start, size); + ret = drm_buddy_alloc_range(mm, &bman->reserved, start, size); mutex_unlock(&bman->lock); return ret; diff --git a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.h b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.h index 0722d33f3e14..fa644b512c2e 100644 --- a/drivers/gpu/drm/i915/i915_ttm_buddy_manager.h +++ b/drivers/gpu/drm/i915/i915_ttm_buddy_manager.h @@ -13,7 +13,7 @@ struct ttm_device; struct ttm_resource_manager; -struct i915_buddy_mm; +struct drm_buddy_mm; /** * struct i915_ttm_buddy_resource @@ -28,7 +28,7 @@ struct i915_buddy_mm; struct i915_ttm_buddy_resource { struct ttm_resource base; struct list_head blocks; - struct i915_buddy_mm *mm; + struct drm_buddy_mm *mm; }; /** diff --git a/include/drm/drm_buddy.h b/include/drm/drm_buddy.h new file mode 100644 index 000000000000..f9ff48a3f3a6 --- /dev/null +++ b/include/drm/drm_buddy.h @@ -0,0 +1,154 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2021 Intel Corporation + */ + +#ifndef __DRM_BUDDY_H__ +#define __DRM_BUDDY_H__ + +#include <linux/bitops.h> +#include <linux/list.h> +#include <linux/slab.h> +#include <linux/sched.h> + +#include <drm/drm_print.h> + +#define range_overflows(start, size, max) ({ \ + typeof(start) start__ = (start); \ + typeof(size) size__ = (size); \ + typeof(max) max__ = (max); \ + (void)(&start__ == &size__); \ + (void)(&start__ == &max__); \ + start__ >= max__ || size__ > max__ - start__; \ +}) + +struct drm_buddy_block { +#define DRM_BUDDY_HEADER_OFFSET GENMASK_ULL(63, 12) +#define DRM_BUDDY_HEADER_STATE GENMASK_ULL(11, 10) +#define DRM_BUDDY_ALLOCATED (1 << 10) +#define DRM_BUDDY_FREE (2 << 10) +#define DRM_BUDDY_SPLIT (3 << 10) +/* Free to be used, if needed in the future */ +#define DRM_BUDDY_HEADER_UNUSED GENMASK_ULL(9, 6) +#define DRM_BUDDY_HEADER_ORDER GENMASK_ULL(5, 0) + u64 header; + + struct drm_buddy_block *left; + struct drm_buddy_block *right; + struct drm_buddy_block *parent; + + void *private; /* owned by creator */ + + /* + * While the block is allocated by the user through drm_buddy_alloc*, + * the user has ownership of the link, for example to maintain within + * a list, if so desired. As soon as the block is freed with + * drm_buddy_free* ownership is given back to the mm. + */ + struct list_head link; + struct list_head tmp_link; +}; + +/* Order-zero must be at least PAGE_SIZE */ +#define DRM_BUDDY_MAX_ORDER (63 - PAGE_SHIFT) + +/* + * Binary Buddy System. + * + * Locking should be handled by the user, a simple mutex around + * drm_buddy_alloc* and drm_buddy_free* should suffice. + */ +struct drm_buddy_mm { + struct kmem_cache *slab_blocks; + /* Maintain a free list for each order. */ + struct list_head *free_list; + + /* + * Maintain explicit binary tree(s) to track the allocation of the + * address space. This gives us a simple way of finding a buddy block + * and performing the potentially recursive merge step when freeing a + * block. Nodes are either allocated or free, in which case they will + * also exist on the respective free list. + */ + struct drm_buddy_block **roots; + + /* + * Anything from here is public, and remains static for the lifetime of + * the mm. Everything above is considered do-not-touch. + */ + unsigned int n_roots; + unsigned int max_order; + + /* Must be at least PAGE_SIZE */ + u64 chunk_size; + u64 size; + u64 avail; +}; + +static inline u64 +drm_buddy_block_offset(struct drm_buddy_block *block) +{ + return block->header & DRM_BUDDY_HEADER_OFFSET; +} + +static inline unsigned int +drm_buddy_block_order(struct drm_buddy_block *block) +{ + return block->header & DRM_BUDDY_HEADER_ORDER; +} + +static inline unsigned int +drm_buddy_block_state(struct drm_buddy_block *block) +{ + return block->header & DRM_BUDDY_HEADER_STATE; +} + +static inline bool +drm_buddy_block_is_allocated(struct drm_buddy_block *block) +{ + return drm_buddy_block_state(block) == DRM_BUDDY_ALLOCATED; +} + +static inline bool +drm_buddy_block_is_free(struct drm_buddy_block *block) +{ + return drm_buddy_block_state(block) == DRM_BUDDY_FREE; +} + +static inline bool +drm_buddy_block_is_split(struct drm_buddy_block *block) +{ + return drm_buddy_block_state(block) == DRM_BUDDY_SPLIT; +} + +static inline u64 +drm_buddy_block_size(struct drm_buddy_mm *mm, + struct drm_buddy_block *block) +{ + return mm->chunk_size << drm_buddy_block_order(block); +} + +int drm_buddy_init(struct drm_buddy_mm *mm, u64 size, u64 chunk_size); + +void drm_buddy_fini(struct drm_buddy_mm *mm); + +struct drm_buddy_block * +drm_buddy_alloc(struct drm_buddy_mm *mm, unsigned int order); + +int drm_buddy_alloc_range(struct drm_buddy_mm *mm, + struct list_head *blocks, + u64 start, u64 size); + +void drm_buddy_free(struct drm_buddy_mm *mm, struct drm_buddy_block *block); + +void drm_buddy_free_list(struct drm_buddy_mm *mm, struct list_head *objects); + +void drm_buddy_print(struct drm_buddy_mm *mm, struct drm_printer *p); +void drm_buddy_block_print(struct drm_buddy_mm *mm, + struct drm_buddy_block *block, + struct drm_printer *p); + +void drm_buddy_module_exit(void); +int drm_buddy_module_init(void); + +#endif -- 2.25.1

8 19

[PATCH v2 1/4] drm/i915: don't call free_mmap_offset when purging
by Matthew Auld 06 Jan '22

06 Jan '22

The TTM backend is in theory the only user here(also purge should only be called once we have dropped the pages), where it is setup at object creation and is only removed once the object is destroyed. Also resetting the node here might be iffy since the ttm fault handler uses the stored fake offset to determine the page offset within the pages array. This also blows up in the dontneed-before-mmap test, since the expectation is that the vma_node will live on, until the object is destroyed: <2> [749.062902] kernel BUG at drivers/gpu/drm/i915/gem/i915_gem_ttm.c:943! <4> [749.062923] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI <4> [749.062928] CPU: 0 PID: 1643 Comm: gem_madvise Tainted: G U W 5.16.0-rc8-CI-CI_DRM_11046+ #1 <4> [749.062933] Hardware name: Gigabyte Technology Co., Ltd. GB-Z390 Garuda/GB-Z390 Garuda-CF, BIOS IG1c 11/19/2019 <4> [749.062937] RIP: 0010:i915_ttm_mmap_offset.cold.35+0x5b/0x5d [i915] <4> [749.063044] Code: 00 48 c7 c2 a0 23 4e a0 48 c7 c7 26 df 4a a0 e8 95 1d d0 e0 bf 01 00 00 00 e8 8b ec cf e0 31 f6 bf 09 00 00 00 e8 5f 30 c0 e0 <0f> 0b 48 c7 c1 24 4b 56 a0 ba 5b 03 00 00 48 c7 c6 c0 23 4e a0 48 <4> [749.063052] RSP: 0018:ffffc90002ab7d38 EFLAGS: 00010246 <4> [749.063056] RAX: 0000000000000240 RBX: ffff88811f2e61c0 RCX: 0000000000000006 <4> [749.063060] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000009 <4> [749.063063] RBP: ffffc90002ab7e58 R08: 0000000000000001 R09: 0000000000000001 <4> [749.063067] R10: 000000000123d0f8 R11: ffffc90002ab7b20 R12: ffff888112a1a000 <4> [749.063071] R13: 0000000000000004 R14: ffff88811f2e61c0 R15: ffff888112a1a000 <4> [749.063074] FS: 00007f6e5fcad500(0000) GS:ffff8884ad600000(0000) knlGS:0000000000000000 <4> [749.063078] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 <4> [749.063081] CR2: 00007efd264e39f0 CR3: 0000000115fd6005 CR4: 00000000003706f0 <4> [749.063085] Call Trace: <4> [749.063087] <TASK> <4> [749.063089] __assign_mmap_offset+0x41/0x300 [i915] <4> [749.063171] __assign_mmap_offset_handle+0x159/0x270 [i915] <4> [749.063248] ? i915_gem_dumb_mmap_offset+0x70/0x70 [i915] <4> [749.063325] drm_ioctl_kernel+0xae/0x140 <4> [749.063330] drm_ioctl+0x201/0x3d0 <4> [749.063333] ? i915_gem_dumb_mmap_offset+0x70/0x70 [i915] <4> [749.063409] ? do_user_addr_fault+0x200/0x670 <4> [749.063415] __x64_sys_ioctl+0x6d/0xa0 <4> [749.063419] do_syscall_64+0x3a/0xb0 <4> [749.063423] entry_SYSCALL_64_after_hwframe+0x44/0xae <4> [749.063428] RIP: 0033:0x7f6e5f100317 Testcase: igt/gem_madvise/dontneed-before-mmap Fixes: cf3e3e86d779 ("drm/i915: Use ttm mmap handling for ttm bo's.") Signed-off-by: Matthew Auld <matthew.auld(a)intel.com> Cc: Thomas Hellström <thomas.hellstrom(a)linux.intel.com> Reviewed-by: Thomas Hellström <thomas.hellstrom(a)linux.intel.com> --- drivers/gpu/drm/i915/gem/i915_gem_pages.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pages.c b/drivers/gpu/drm/i915/gem/i915_gem_pages.c index 89b70f5cde7a..9f429ed6e78a 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_pages.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_pages.c @@ -161,7 +161,6 @@ int i915_gem_object_pin_pages_unlocked(struct drm_i915_gem_object *obj) /* Immediately discard the backing storage */ int i915_gem_object_truncate(struct drm_i915_gem_object *obj) { - drm_gem_free_mmap_offset(&obj->base); if (obj->ops->truncate) return obj->ops->truncate(obj); -- 2.31.1

1 3

[bug report] drm/ast: Handle failed I2C initialization gracefully
by Dan Carpenter 06 Jan '22

06 Jan '22

Hello Thomas Zimmermann, The patch 55dc449a7c60: "drm/ast: Handle failed I2C initialization gracefully" from Dec 6, 2021, leads to the following Smatch static checker warning: drivers/gpu/drm/ast/ast_mode.c:1232 ast_get_modes() warn: passing freed memory 'edid' drivers/gpu/drm/ast/ast_mode.c 1209 static int ast_get_modes(struct drm_connector *connector) 1210 { 1211 struct ast_connector *ast_connector = to_ast_connector(connector); 1212 struct ast_private *ast = to_ast_private(connector->dev); 1213 struct edid *edid = NULL; 1214 bool flags = false; 1215 int ret; 1216 1217 if (ast->tx_chip_type == AST_TX_DP501) { 1218 ast->dp501_maxclk = 0xff; 1219 edid = kmalloc(128, GFP_KERNEL); 1220 if (!edid) 1221 return -ENOMEM; 1222 1223 flags = ast_dp501_read_edid(connector->dev, (u8 *)edid); 1224 if (flags) 1225 ast->dp501_maxclk = ast_get_dp501_max_clk(connector->dev); 1226 else 1227 kfree(edid); kfree 1228 } 1229 if (!flags && ast_connector->i2c) 1230 edid = drm_get_edid(connector, &ast_connector->i2c->adapter); If "!flags" is true but "ast_connector->i2c" is false 1231 if (edid) { --> 1232 drm_connector_update_edid_property(&ast_connector->base, edid); Then perhaps "edid" is free here. 1233 ret = drm_add_edid_modes(connector, edid); 1234 kfree(edid); 1235 return ret; 1236 } 1237 drm_connector_update_edid_property(&ast_connector->base, NULL); 1238 return 0; 1239 } regards, dan carpenter

1 0

[PATCH] drm/vmwgfx: use default_groups in kobj_type
by Greg Kroah-Hartman 06 Jan '22

06 Jan '22

There are currently 2 ways to create a set of sysfs files for a kobj_type, through the default_attrs field, and the default_groups field. Move the vmwgfx sysfs code to use default_groups field which has been the preferred way since aa30f47cf666 ("kobject: Add support for default attribute groups to kobj_type") so that we can soon get rid of the obsolete default_attrs field. Cc: VMware Graphics <linux-graphics-maintainer(a)vmware.com> Cc: Zack Rusin <zackr(a)vmware.com> Cc: David Airlie <airlied(a)linux.ie> Cc: Daniel Vetter <daniel(a)ffwll.ch> Cc: dri-devel(a)lists.freedesktop.org Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/gpu/drm/vmwgfx/ttm_memory.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/vmwgfx/ttm_memory.c b/drivers/gpu/drm/vmwgfx/ttm_memory.c index 7f7fe35fc21d..f49190aadb08 100644 --- a/drivers/gpu/drm/vmwgfx/ttm_memory.c +++ b/drivers/gpu/drm/vmwgfx/ttm_memory.c @@ -162,6 +162,7 @@ static struct attribute *ttm_mem_zone_attrs[] = { &ttm_mem_used, NULL }; +ATTRIBUTE_GROUPS(ttm_mem_zone); static const struct sysfs_ops ttm_mem_zone_ops = { .show = &ttm_mem_zone_show, @@ -171,7 +172,7 @@ static const struct sysfs_ops ttm_mem_zone_ops = { static struct kobj_type ttm_mem_zone_kobj_type = { .release = &ttm_mem_zone_kobj_release, .sysfs_ops = &ttm_mem_zone_ops, - .default_attrs = ttm_mem_zone_attrs, + .default_groups = ttm_mem_zone_groups, }; static struct attribute ttm_mem_global_lower_mem_limit = { @@ -226,6 +227,7 @@ static struct attribute *ttm_mem_global_attrs[] = { &ttm_mem_global_lower_mem_limit, NULL }; +ATTRIBUTE_GROUPS(ttm_mem_global); static const struct sysfs_ops ttm_mem_global_ops = { .show = &ttm_mem_global_show, @@ -234,7 +236,7 @@ static const struct sysfs_ops ttm_mem_global_ops = { static struct kobj_type ttm_mem_glob_kobj_type = { .sysfs_ops = &ttm_mem_global_ops, - .default_attrs = ttm_mem_global_attrs, + .default_groups = ttm_mem_global_groups, }; static bool ttm_zones_above_swap_target(struct ttm_mem_global *glob, -- 2.34.1

1 0

[PATCH 1/2] fbdev: fbmem: add a helper to determine if an aperture is used by a fw fb
by Alex Deucher 06 Jan '22

06 Jan '22

Add a function for drivers to check if the a firmware initialized fb is corresponds to their aperture. This allows drivers to check if the device corresponds to what the firmware set up as the display device. Bug: https://bugzilla.kernel.org/show_bug.cgi?id=215203 Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1840 Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com> --- drivers/video/fbdev/core/fbmem.c | 47 ++++++++++++++++++++++++++++++++ include/linux/fb.h | 1 + 2 files changed, 48 insertions(+) diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index 826175ad88a2..0fa7ede94fa6 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -1762,6 +1762,53 @@ int remove_conflicting_framebuffers(struct apertures_struct *a, } EXPORT_SYMBOL(remove_conflicting_framebuffers); +/** + * is_firmware_framebuffer - detect if firmware-configured framebuffer matches + * @a: memory range, users of which are to be checked + * + * This function checks framebuffer devices (initialized by firmware/bootloader) + * which use memory range described by @a. If @a matchesm the function returns + * true, otherwise false. + */ +bool is_firmware_framebuffer(struct apertures_struct *a) +{ + bool do_free = false; + bool found = false; + int i; + + if (!a) { + a = alloc_apertures(1); + if (!a) + return false; + + a->ranges[0].base = 0; + a->ranges[0].size = ~0; + do_free = true; + } + + mutex_lock(&registration_lock); + /* check all firmware fbs and kick off if the base addr overlaps */ + for_each_registered_fb(i) { + struct apertures_struct *gen_aper; + + if (!(registered_fb[i]->flags & FBINFO_MISC_FIRMWARE)) + continue; + + gen_aper = registered_fb[i]->apertures; + if (fb_do_apertures_overlap(gen_aper, a)) { + found = true; + break; + } + } + mutex_unlock(&registration_lock); + + if (do_free) + kfree(a); + + return found; +} +EXPORT_SYMBOL(is_firmware_framebuffer); + /** * remove_conflicting_pci_framebuffers - remove firmware-configured framebuffers for PCI devices * @pdev: PCI device diff --git a/include/linux/fb.h b/include/linux/fb.h index 6f3db99ab990..3da95842b207 100644 --- a/include/linux/fb.h +++ b/include/linux/fb.h @@ -610,6 +610,7 @@ extern int remove_conflicting_pci_framebuffers(struct pci_dev *pdev, const char *name); extern int remove_conflicting_framebuffers(struct apertures_struct *a, const char *name, bool primary); +extern bool is_firmware_framebuffer(struct apertures_struct *a); extern int fb_prepare_logo(struct fb_info *fb_info, int rotate); extern int fb_show_logo(struct fb_info *fb_info, int rotate); extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size); -- 2.33.1

2 2

[PATCH] omapfb: use default_groups in kobj_type
by Greg Kroah-Hartman 06 Jan '22

06 Jan '22

There are currently 2 ways to create a set of sysfs files for a kobj_type, through the default_attrs field, and the default_groups field. Move the omapfb sysfs code to use default_groups field which has been the preferred way since aa30f47cf666 ("kobject: Add support for default attribute groups to kobj_type") so that we can soon get rid of the obsolete default_attrs field. Cc: linux-omap(a)vger.kernel.org Cc: linux-fbdev(a)vger.kernel.org Cc: dri-devel(a)lists.freedesktop.org Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/video/fbdev/omap2/omapfb/dss/display-sysfs.c | 3 ++- drivers/video/fbdev/omap2/omapfb/dss/manager-sysfs.c | 3 ++- drivers/video/fbdev/omap2/omapfb/dss/overlay-sysfs.c | 3 ++- 3 files changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/video/fbdev/omap2/omapfb/dss/display-sysfs.c b/drivers/video/fbdev/omap2/omapfb/dss/display-sysfs.c index 6dbe265b312d..f43394d52ba2 100644 --- a/drivers/video/fbdev/omap2/omapfb/dss/display-sysfs.c +++ b/drivers/video/fbdev/omap2/omapfb/dss/display-sysfs.c @@ -265,6 +265,7 @@ static struct attribute *display_sysfs_attrs[] = { &display_attr_wss.attr, NULL }; +ATTRIBUTE_GROUPS(display_sysfs); static ssize_t display_attr_show(struct kobject *kobj, struct attribute *attr, char *buf) @@ -303,7 +304,7 @@ static const struct sysfs_ops display_sysfs_ops = { static struct kobj_type display_ktype = { .sysfs_ops = &display_sysfs_ops, - .default_attrs = display_sysfs_attrs, + .default_groups = display_sysfs_groups, }; int display_init_sysfs(struct platform_device *pdev) diff --git a/drivers/video/fbdev/omap2/omapfb/dss/manager-sysfs.c b/drivers/video/fbdev/omap2/omapfb/dss/manager-sysfs.c index b52cc1af0959..3addbcfdad87 100644 --- a/drivers/video/fbdev/omap2/omapfb/dss/manager-sysfs.c +++ b/drivers/video/fbdev/omap2/omapfb/dss/manager-sysfs.c @@ -457,6 +457,7 @@ static struct attribute *manager_sysfs_attrs[] = { &manager_attr_cpr_coef.attr, NULL }; +ATTRIBUTE_GROUPS(manager_sysfs); static ssize_t manager_attr_show(struct kobject *kobj, struct attribute *attr, char *buf) @@ -495,7 +496,7 @@ static const struct sysfs_ops manager_sysfs_ops = { static struct kobj_type manager_ktype = { .sysfs_ops = &manager_sysfs_ops, - .default_attrs = manager_sysfs_attrs, + .default_groups = manager_sysfs_groups, }; int dss_manager_kobj_init(struct omap_overlay_manager *mgr, diff --git a/drivers/video/fbdev/omap2/omapfb/dss/overlay-sysfs.c b/drivers/video/fbdev/omap2/omapfb/dss/overlay-sysfs.c index 36acf366213a..26644a108180 100644 --- a/drivers/video/fbdev/omap2/omapfb/dss/overlay-sysfs.c +++ b/drivers/video/fbdev/omap2/omapfb/dss/overlay-sysfs.c @@ -390,6 +390,7 @@ static struct attribute *overlay_sysfs_attrs[] = { &overlay_attr_zorder.attr, NULL }; +ATTRIBUTE_GROUPS(overlay_sysfs); static ssize_t overlay_attr_show(struct kobject *kobj, struct attribute *attr, char *buf) @@ -428,7 +429,7 @@ static const struct sysfs_ops overlay_sysfs_ops = { static struct kobj_type overlay_ktype = { .sysfs_ops = &overlay_sysfs_ops, - .default_attrs = overlay_sysfs_attrs, + .default_groups = overlay_sysfs_groups, }; int dss_overlay_kobj_init(struct omap_overlay *ovl, -- 2.34.1

1 0

[PATCH] drm/ast: Enable the supporting of wide screen on AST2600
by KuoHsiang Chou 06 Jan '22

06 Jan '22

Enable the supporting of wide sscreen on AST2600, so that the resolution of 16:9 and 16:10 are able to be selected on Display Settings. Signed-off-by: KuoHsiang Chou <kuohsiang_chou(a)aspeedtech.com> --- drivers/gpu/drm/ast/ast_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c index 9f25fa2c8..1113ee1cb 100644 --- a/drivers/gpu/drm/ast/ast_main.c +++ b/drivers/gpu/drm/ast/ast_main.c @@ -209,6 +209,8 @@ static int ast_detect_chip(struct drm_device *dev, bool *need_post) if (ast->chip == AST2500 && scu_rev == 0x100) /* ast2510 */ ast->support_wide_screen = true; + if (ast->chip == AST2600) /* ast2600 */ + ast->support_wide_screen = true; } break; } -- 2.27.0

2 1

[PATCH 1/4] phy: mediatek: phy-mtk-hdmi: Switch to regmap for mmio access
by AngeloGioacchino Del Regno 06 Jan '22

06 Jan '22

Switch to using the generic regmap API instead of calls to readl/writel for MMIO register access, removing custom crafted update/set/clear_bits functions and also allowing us to reduce code size. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno(a)collabora.com> --- drivers/phy/mediatek/phy-mtk-hdmi-mt2701.c | 165 ++++++++++----------- drivers/phy/mediatek/phy-mtk-hdmi-mt8173.c | 126 ++++++++-------- drivers/phy/mediatek/phy-mtk-hdmi.c | 51 ++----- drivers/phy/mediatek/phy-mtk-hdmi.h | 9 +- 4 files changed, 158 insertions(+), 193 deletions(-) diff --git a/drivers/phy/mediatek/phy-mtk-hdmi-mt2701.c b/drivers/phy/mediatek/phy-mtk-hdmi-mt2701.c index b74c65a1762c..09e0dd7499d8 100644 --- a/drivers/phy/mediatek/phy-mtk-hdmi-mt2701.c +++ b/drivers/phy/mediatek/phy-mtk-hdmi-mt2701.c @@ -69,19 +69,19 @@ static int mtk_hdmi_pll_prepare(struct clk_hw *hw) { struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON7, RG_HTPLL_AUTOK_EN); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_RLH_EN); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_POSDIV_MASK); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_MBIAS); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON7, RG_HTPLL_AUTOK_EN); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_RLH_EN); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_POSDIV_MASK); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON2, RG_HDMITX_EN_MBIAS); usleep_range(80, 100); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_EN); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_CKLDO); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SLDO_MASK); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_EN); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON2, RG_HDMITX_EN_TX_CKLDO); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_EN_SLDO_MASK); usleep_range(80, 100); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SER_MASK); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_PRED_MASK); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_DRV_MASK); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_EN_SER_MASK); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_EN_PRED_MASK); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_EN_DRV_MASK); usleep_range(80, 100); return 0; } @@ -90,19 +90,19 @@ static void mtk_hdmi_pll_unprepare(struct clk_hw *hw) { struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_DRV_MASK); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_PRED_MASK); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SER_MASK); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_EN_DRV_MASK); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_EN_PRED_MASK); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_EN_SER_MASK); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN); usleep_range(80, 100); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SLDO_MASK); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_CKLDO); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_EN); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_EN_SLDO_MASK); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON2, RG_HDMITX_EN_TX_CKLDO); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_EN); usleep_range(80, 100); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_MBIAS); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_POSDIV_MASK); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_RLH_EN); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON7, RG_HTPLL_AUTOK_EN); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON2, RG_HDMITX_EN_MBIAS); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_POSDIV_MASK); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_RLH_EN); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON7, RG_HTPLL_AUTOK_EN); usleep_range(80, 100); } @@ -125,37 +125,34 @@ static int mtk_hdmi_pll_set_rate(struct clk_hw *hw, unsigned long rate, else pos_div = 1; - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_PREDIV_MASK); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_POSDIV_MASK); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_POSDIV); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6, (0x1 << RG_HTPLL_IC), - RG_HTPLL_IC_MASK); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6, (0x1 << RG_HTPLL_IR), - RG_HTPLL_IR_MASK); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON2, (pos_div << RG_HDMITX_TX_POSDIV), - RG_HDMITX_TX_POSDIV_MASK); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6, (1 << RG_HTPLL_FBKSEL), - RG_HTPLL_FBKSEL_MASK); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6, (19 << RG_HTPLL_FBKDIV), - RG_HTPLL_FBKDIV_MASK); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON7, (0x2 << RG_HTPLL_DIVEN), - RG_HTPLL_DIVEN_MASK); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6, (0xc << RG_HTPLL_BP), - RG_HTPLL_BP_MASK); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6, (0x2 << RG_HTPLL_BC), - RG_HTPLL_BC_MASK); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6, (0x1 << RG_HTPLL_BR), - RG_HTPLL_BR_MASK); - - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PRED_IMP); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON1, (0x3 << RG_HDMITX_PRED_IBIAS), - RG_HDMITX_PRED_IBIAS_MASK); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_IMP_MASK); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON1, (0x28 << RG_HDMITX_DRV_IMP), - RG_HDMITX_DRV_IMP_MASK); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON4, 0x28, RG_HDMITX_RESERVE_MASK); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON0, (0xa << RG_HDMITX_DRV_IBIAS), - RG_HDMITX_DRV_IBIAS_MASK); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_PREDIV_MASK); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_POSDIV_MASK); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON2, RG_HDMITX_EN_TX_POSDIV); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_IC_MASK, BIT(RG_HTPLL_IC)); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_IR_MASK, BIT(RG_HTPLL_IR)); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON2, RG_HDMITX_TX_POSDIV_MASK, + (pos_div << RG_HDMITX_TX_POSDIV)); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_FBKSEL_MASK, + (1 << RG_HTPLL_FBKSEL)); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_FBKDIV_MASK, + (19 << RG_HTPLL_FBKDIV)); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON7, RG_HTPLL_DIVEN_MASK, + (0x2 << RG_HTPLL_DIVEN)); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_BP_MASK, + (0xc << RG_HTPLL_BP)); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_BC_MASK, + (0x2 << RG_HTPLL_BC)); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_BR_MASK, BIT(RG_HTPLL_BR)); + + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON1, RG_HDMITX_PRED_IMP); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON1, RG_HDMITX_PRED_IBIAS_MASK, + (0x3 << RG_HDMITX_PRED_IBIAS)); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_EN_IMP_MASK); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON1, RG_HDMITX_DRV_IMP_MASK, + (0x28 << RG_HDMITX_DRV_IMP)); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON4, RG_HDMITX_RESERVE_MASK, 0x28); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_DRV_IBIAS_MASK, + (0xa << RG_HDMITX_DRV_IBIAS)); return 0; } @@ -163,10 +160,11 @@ static unsigned long mtk_hdmi_pll_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); - unsigned long out_rate, val; + unsigned long out_rate; + u32 val; - val = (readl(hdmi_phy->regs + HDMI_CON6) - & RG_HTPLL_PREDIV_MASK) >> RG_HTPLL_PREDIV; + regmap_read(hdmi_phy->regmap, HDMI_CON6, &val); + val = (val & RG_HTPLL_PREDIV_MASK) >> RG_HTPLL_PREDIV; switch (val) { case 0x00: out_rate = parent_rate; @@ -179,14 +177,15 @@ static unsigned long mtk_hdmi_pll_recalc_rate(struct clk_hw *hw, break; } - val = (readl(hdmi_phy->regs + HDMI_CON6) - & RG_HTPLL_FBKDIV_MASK) >> RG_HTPLL_FBKDIV; + regmap_read(hdmi_phy->regmap, HDMI_CON6, &val); + val = (val & RG_HTPLL_FBKDIV_MASK) >> RG_HTPLL_FBKDIV; out_rate *= (val + 1) * 2; - val = (readl(hdmi_phy->regs + HDMI_CON2) - & RG_HDMITX_TX_POSDIV_MASK); + regmap_read(hdmi_phy->regmap, HDMI_CON2, &val); + val &= RG_HDMITX_TX_POSDIV_MASK; out_rate >>= (val >> RG_HDMITX_TX_POSDIV); - if (readl(hdmi_phy->regs + HDMI_CON2) & RG_HDMITX_EN_TX_POSDIV) + regmap_read(hdmi_phy->regmap, HDMI_CON2, &val); + if (val & RG_HDMITX_EN_TX_POSDIV) out_rate /= 5; return out_rate; @@ -202,37 +201,37 @@ static const struct clk_ops mtk_hdmi_phy_pll_ops = { static void mtk_hdmi_phy_enable_tmds(struct mtk_hdmi_phy *hdmi_phy) { - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON7, RG_HTPLL_AUTOK_EN); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_RLH_EN); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_POSDIV_MASK); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_MBIAS); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON7, RG_HTPLL_AUTOK_EN); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_RLH_EN); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_POSDIV_MASK); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON2, RG_HDMITX_EN_MBIAS); usleep_range(80, 100); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_EN); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_CKLDO); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SLDO_MASK); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_EN); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON2, RG_HDMITX_EN_TX_CKLDO); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_EN_SLDO_MASK); usleep_range(80, 100); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SER_MASK); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_PRED_MASK); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_DRV_MASK); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_EN_SER_MASK); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_EN_PRED_MASK); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_EN_DRV_MASK); usleep_range(80, 100); } static void mtk_hdmi_phy_disable_tmds(struct mtk_hdmi_phy *hdmi_phy) { - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_DRV_MASK); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_PRED_MASK); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SER_MASK); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_EN_DRV_MASK); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_EN_PRED_MASK); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_EN_SER_MASK); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON2, RG_HDMITX_MBIAS_LPF_EN); usleep_range(80, 100); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_EN_SLDO_MASK); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_TX_CKLDO); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_EN); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_EN_SLDO_MASK); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON2, RG_HDMITX_EN_TX_CKLDO); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_EN); usleep_range(80, 100); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON2, RG_HDMITX_EN_MBIAS); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_POSDIV_MASK); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON6, RG_HTPLL_RLH_EN); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON7, RG_HTPLL_AUTOK_EN); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON2, RG_HDMITX_EN_MBIAS); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_POSDIV_MASK); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON6, RG_HTPLL_RLH_EN); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON7, RG_HTPLL_AUTOK_EN); usleep_range(80, 100); } diff --git a/drivers/phy/mediatek/phy-mtk-hdmi-mt8173.c b/drivers/phy/mediatek/phy-mtk-hdmi-mt8173.c index 6cdfdf5a698a..e317bf4a9db9 100644 --- a/drivers/phy/mediatek/phy-mtk-hdmi-mt8173.c +++ b/drivers/phy/mediatek/phy-mtk-hdmi-mt8173.c @@ -111,15 +111,15 @@ static int mtk_hdmi_pll_prepare(struct clk_hw *hw) { struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PLL_AUTOK_EN); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_PLL_POSDIV); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON3, RG_HDMITX_MHLCK_EN); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PLL_BIAS_EN); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON1, RG_HDMITX_PLL_AUTOK_EN); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_PLL_POSDIV); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON3, RG_HDMITX_MHLCK_EN); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON1, RG_HDMITX_PLL_BIAS_EN); usleep_range(100, 150); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_PLL_EN); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_PLL_EN); usleep_range(100, 150); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PLL_BIAS_LPF_EN); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PLL_TXDIV_EN); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON1, RG_HDMITX_PLL_BIAS_LPF_EN); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON1, RG_HDMITX_PLL_TXDIV_EN); return 0; } @@ -128,14 +128,14 @@ static void mtk_hdmi_pll_unprepare(struct clk_hw *hw) { struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PLL_TXDIV_EN); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PLL_BIAS_LPF_EN); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON1, RG_HDMITX_PLL_TXDIV_EN); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON1, RG_HDMITX_PLL_BIAS_LPF_EN); usleep_range(100, 150); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_PLL_EN); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_PLL_EN); usleep_range(100, 150); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PLL_BIAS_EN); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_PLL_POSDIV); - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON1, RG_HDMITX_PLL_AUTOK_EN); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON1, RG_HDMITX_PLL_BIAS_EN); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_PLL_POSDIV); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON1, RG_HDMITX_PLL_AUTOK_EN); usleep_range(100, 150); } @@ -177,65 +177,59 @@ static int mtk_hdmi_pll_set_rate(struct clk_hw *hw, unsigned long rate, div = 1; } - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON0, - (pre_div << PREDIV_SHIFT), RG_HDMITX_PLL_PREDIV); - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON0, RG_HDMITX_PLL_POSDIV); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON0, - (0x1 << PLL_IC_SHIFT) | (0x1 << PLL_IR_SHIFT), - RG_HDMITX_PLL_IC | RG_HDMITX_PLL_IR); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON1, - (div << PLL_TXDIV_SHIFT), RG_HDMITX_PLL_TXDIV); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON0, - (0x1 << PLL_FBKSEL_SHIFT) | (19 << PLL_FBKDIV_SHIFT), - RG_HDMITX_PLL_FBKSEL | RG_HDMITX_PLL_FBKDIV); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON1, - (0x2 << PLL_DIVEN_SHIFT), RG_HDMITX_PLL_DIVEN); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON0, - (0xc << PLL_BP_SHIFT) | (0x2 << PLL_BC_SHIFT) | - (0x1 << PLL_BR_SHIFT), - RG_HDMITX_PLL_BP | RG_HDMITX_PLL_BC | - RG_HDMITX_PLL_BR); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_PLL_PREDIV, + (pre_div << PREDIV_SHIFT)); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON0, RG_HDMITX_PLL_POSDIV); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON0, + RG_HDMITX_PLL_IC | RG_HDMITX_PLL_IR, + BIT(PLL_IC_SHIFT) | BIT(PLL_IR_SHIFT)); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON1, RG_HDMITX_PLL_TXDIV, + (div << PLL_TXDIV_SHIFT)); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON0, + RG_HDMITX_PLL_FBKSEL | RG_HDMITX_PLL_FBKDIV, + BIT(PLL_FBKSEL_SHIFT) | (19 << PLL_FBKDIV_SHIFT)); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON1, RG_HDMITX_PLL_DIVEN, + (0x2 << PLL_DIVEN_SHIFT)); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON0, + RG_HDMITX_PLL_BP | RG_HDMITX_PLL_BC | RG_HDMITX_PLL_BR, + (0xc << PLL_BP_SHIFT) | (0x2 << PLL_BC_SHIFT) | + (0x1 << PLL_BR_SHIFT)); if (rate < 165000000) { - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON3, + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON3, RG_HDMITX_PRD_IMP_EN); pre_ibias = 0x3; imp_en = 0x0; hdmi_ibias = hdmi_phy->ibias; } else { - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON3, + regmap_set_bits(hdmi_phy->regmap, HDMI_CON3, RG_HDMITX_PRD_IMP_EN); pre_ibias = 0x6; imp_en = 0xf; hdmi_ibias = hdmi_phy->ibias_up; } - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON4, - (pre_ibias << PRD_IBIAS_CLK_SHIFT) | - (pre_ibias << PRD_IBIAS_D2_SHIFT) | - (pre_ibias << PRD_IBIAS_D1_SHIFT) | - (pre_ibias << PRD_IBIAS_D0_SHIFT), - RG_HDMITX_PRD_IBIAS_CLK | - RG_HDMITX_PRD_IBIAS_D2 | - RG_HDMITX_PRD_IBIAS_D1 | - RG_HDMITX_PRD_IBIAS_D0); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON3, - (imp_en << DRV_IMP_EN_SHIFT), - RG_HDMITX_DRV_IMP_EN); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON6, - (hdmi_phy->drv_imp_clk << DRV_IMP_CLK_SHIFT) | - (hdmi_phy->drv_imp_d2 << DRV_IMP_D2_SHIFT) | - (hdmi_phy->drv_imp_d1 << DRV_IMP_D1_SHIFT) | - (hdmi_phy->drv_imp_d0 << DRV_IMP_D0_SHIFT), - RG_HDMITX_DRV_IMP_CLK | RG_HDMITX_DRV_IMP_D2 | - RG_HDMITX_DRV_IMP_D1 | RG_HDMITX_DRV_IMP_D0); - mtk_hdmi_phy_mask(hdmi_phy, HDMI_CON5, - (hdmi_ibias << DRV_IBIAS_CLK_SHIFT) | - (hdmi_ibias << DRV_IBIAS_D2_SHIFT) | - (hdmi_ibias << DRV_IBIAS_D1_SHIFT) | - (hdmi_ibias << DRV_IBIAS_D0_SHIFT), - RG_HDMITX_DRV_IBIAS_CLK | - RG_HDMITX_DRV_IBIAS_D2 | - RG_HDMITX_DRV_IBIAS_D1 | - RG_HDMITX_DRV_IBIAS_D0); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON4, + RG_HDMITX_PRD_IBIAS_CLK | RG_HDMITX_PRD_IBIAS_D2 | + RG_HDMITX_PRD_IBIAS_D1 | RG_HDMITX_PRD_IBIAS_D0, + (pre_ibias << PRD_IBIAS_CLK_SHIFT) | + (pre_ibias << PRD_IBIAS_D2_SHIFT) | + (pre_ibias << PRD_IBIAS_D1_SHIFT) | + (pre_ibias << PRD_IBIAS_D0_SHIFT)); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON3, RG_HDMITX_DRV_IMP_EN, + (imp_en << DRV_IMP_EN_SHIFT)); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON6, + RG_HDMITX_DRV_IMP_CLK | RG_HDMITX_DRV_IMP_D2 | + RG_HDMITX_DRV_IMP_D1 | RG_HDMITX_DRV_IMP_D0, + (hdmi_phy->drv_imp_clk << DRV_IMP_CLK_SHIFT) | + (hdmi_phy->drv_imp_d2 << DRV_IMP_D2_SHIFT) | + (hdmi_phy->drv_imp_d1 << DRV_IMP_D1_SHIFT) | + (hdmi_phy->drv_imp_d0 << DRV_IMP_D0_SHIFT)); + regmap_update_bits(hdmi_phy->regmap, HDMI_CON5, + RG_HDMITX_DRV_IBIAS_CLK | RG_HDMITX_DRV_IBIAS_D2 | + RG_HDMITX_DRV_IBIAS_D1 | RG_HDMITX_DRV_IBIAS_D0, + (hdmi_ibias << DRV_IBIAS_CLK_SHIFT) | + (hdmi_ibias << DRV_IBIAS_D2_SHIFT) | + (hdmi_ibias << DRV_IBIAS_D1_SHIFT) | + (hdmi_ibias << DRV_IBIAS_D0_SHIFT)); return 0; } @@ -257,17 +251,15 @@ static const struct clk_ops mtk_hdmi_phy_pll_ops = { static void mtk_hdmi_phy_enable_tmds(struct mtk_hdmi_phy *hdmi_phy) { - mtk_hdmi_phy_set_bits(hdmi_phy, HDMI_CON3, - RG_HDMITX_SER_EN | RG_HDMITX_PRD_EN | - RG_HDMITX_DRV_EN); + regmap_set_bits(hdmi_phy->regmap, HDMI_CON3, + RG_HDMITX_SER_EN | RG_HDMITX_PRD_EN | RG_HDMITX_DRV_EN); usleep_range(100, 150); } static void mtk_hdmi_phy_disable_tmds(struct mtk_hdmi_phy *hdmi_phy) { - mtk_hdmi_phy_clear_bits(hdmi_phy, HDMI_CON3, - RG_HDMITX_DRV_EN | RG_HDMITX_PRD_EN | - RG_HDMITX_SER_EN); + regmap_clear_bits(hdmi_phy->regmap, HDMI_CON3, + RG_HDMITX_DRV_EN | RG_HDMITX_PRD_EN | RG_HDMITX_SER_EN); } struct mtk_hdmi_phy_conf mtk_hdmi_phy_8173_conf = { diff --git a/drivers/phy/mediatek/phy-mtk-hdmi.c b/drivers/phy/mediatek/phy-mtk-hdmi.c index 5fb4217fb8e0..707e90691e6e 100644 --- a/drivers/phy/mediatek/phy-mtk-hdmi.c +++ b/drivers/phy/mediatek/phy-mtk-hdmi.c @@ -15,39 +15,6 @@ static const struct phy_ops mtk_hdmi_phy_dev_ops = { .owner = THIS_MODULE, }; -void mtk_hdmi_phy_clear_bits(struct mtk_hdmi_phy *hdmi_phy, u32 offset, - u32 bits) -{ - void __iomem *reg = hdmi_phy->regs + offset; - u32 tmp; - - tmp = readl(reg); - tmp &= ~bits; - writel(tmp, reg); -} - -void mtk_hdmi_phy_set_bits(struct mtk_hdmi_phy *hdmi_phy, u32 offset, - u32 bits) -{ - void __iomem *reg = hdmi_phy->regs + offset; - u32 tmp; - - tmp = readl(reg); - tmp |= bits; - writel(tmp, reg); -} - -void mtk_hdmi_phy_mask(struct mtk_hdmi_phy *hdmi_phy, u32 offset, - u32 val, u32 mask) -{ - void __iomem *reg = hdmi_phy->regs + offset; - u32 tmp; - - tmp = readl(reg); - tmp = (tmp & ~mask) | (val & mask); - writel(tmp, reg); -} - inline struct mtk_hdmi_phy *to_mtk_hdmi_phy(struct clk_hw *hw) { return container_of(hw, struct mtk_hdmi_phy, pll_hw); @@ -96,6 +63,13 @@ static void mtk_hdmi_phy_clk_get_data(struct mtk_hdmi_phy *hdmi_phy, clk_init->ops = hdmi_phy->conf->hdmi_phy_clk_ops; } +static const struct regmap_config mtk_hdmi_phy_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .disable_locking = true, +}; + static int mtk_hdmi_phy_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -109,15 +83,20 @@ static int mtk_hdmi_phy_probe(struct platform_device *pdev) struct phy *phy; struct phy_provider *phy_provider; + void __iomem *regs; int ret; hdmi_phy = devm_kzalloc(dev, sizeof(*hdmi_phy), GFP_KERNEL); if (!hdmi_phy) return -ENOMEM; - hdmi_phy->regs = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(hdmi_phy->regs)) - return PTR_ERR(hdmi_phy->regs); + regs = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(regs)) + return PTR_ERR(regs); + + hdmi_phy->regmap = devm_regmap_init_mmio(dev, regs, &mtk_hdmi_phy_regmap_config); + if (IS_ERR(hdmi_phy->regmap)) + return PTR_ERR(hdmi_phy->regmap); ref_clk = devm_clk_get(dev, "pll_ref"); if (IS_ERR(ref_clk)) { diff --git a/drivers/phy/mediatek/phy-mtk-hdmi.h b/drivers/phy/mediatek/phy-mtk-hdmi.h index dcf9bb13699b..a0571271d730 100644 --- a/drivers/phy/mediatek/phy-mtk-hdmi.h +++ b/drivers/phy/mediatek/phy-mtk-hdmi.h @@ -15,6 +15,7 @@ #include <linux/of_device.h> #include <linux/phy/phy.h> #include <linux/platform_device.h> +#include <linux/regmap.h> #include <linux/types.h> struct mtk_hdmi_phy; @@ -28,7 +29,7 @@ struct mtk_hdmi_phy_conf { }; struct mtk_hdmi_phy { - void __iomem *regs; + struct regmap *regmap; struct device *dev; struct mtk_hdmi_phy_conf *conf; struct clk *pll; @@ -42,12 +43,6 @@ struct mtk_hdmi_phy { unsigned int ibias_up; }; -void mtk_hdmi_phy_clear_bits(struct mtk_hdmi_phy *hdmi_phy, u32 offset, - u32 bits); -void mtk_hdmi_phy_set_bits(struct mtk_hdmi_phy *hdmi_phy, u32 offset, - u32 bits); -void mtk_hdmi_phy_mask(struct mtk_hdmi_phy *hdmi_phy, u32 offset, - u32 val, u32 mask); struct mtk_hdmi_phy *to_mtk_hdmi_phy(struct clk_hw *hw); extern struct mtk_hdmi_phy_conf mtk_hdmi_phy_8173_conf; -- 2.33.1

2 7

[PATCH v2 1/3] drm/bridge: anx7625: Add bridge helper atomic conversion
by Xin Ji 06 Jan '22

06 Jan '22

Add bridge helper atomic conversion. Reviewed-by: Robert Foss <robert.foss(a)linaro.org> Signed-off-by: Xin Ji <xji(a)analogixsemi.com> --- drivers/gpu/drm/bridge/analogix/anx7625.c | 46 +++++++++++++++++++---- drivers/gpu/drm/bridge/analogix/anx7625.h | 1 + 2 files changed, 40 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c index 7b24213f7b13..6d5ae52f4142 100644 --- a/drivers/gpu/drm/bridge/analogix/anx7625.c +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c @@ -1911,25 +1911,54 @@ static bool anx7625_bridge_mode_fixup(struct drm_bridge *bridge, return true; } -static void anx7625_bridge_enable(struct drm_bridge *bridge) +static int anx7625_bridge_atomic_check(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) { struct anx7625_data *ctx = bridge_to_anx7625(bridge); struct device *dev = &ctx->client->dev; - DRM_DEV_DEBUG_DRIVER(dev, "drm enable\n"); + dev_dbg(dev, "drm bridge atomic check\n"); + return anx7625_bridge_mode_fixup(bridge, &crtc_state->mode, + &crtc_state->adjusted_mode); +} + +static void anx7625_bridge_atomic_enable(struct drm_bridge *bridge, + struct drm_bridge_state *state) +{ + struct anx7625_data *ctx = bridge_to_anx7625(bridge); + struct device *dev = &ctx->client->dev; + struct drm_connector *connector; + + dev_dbg(dev, "drm atomic enable\n"); + + if (!bridge->encoder) { + dev_err(dev, "Parent encoder object not found"); + return; + } + + connector = drm_atomic_get_new_connector_for_encoder(state->base.state, + bridge->encoder); + if (!connector) + return; + + ctx->connector = connector; pm_runtime_get_sync(dev); anx7625_dp_start(ctx); } -static void anx7625_bridge_disable(struct drm_bridge *bridge) +static void anx7625_bridge_atomic_disable(struct drm_bridge *bridge, + struct drm_bridge_state *old) { struct anx7625_data *ctx = bridge_to_anx7625(bridge); struct device *dev = &ctx->client->dev; - DRM_DEV_DEBUG_DRIVER(dev, "drm disable\n"); + dev_dbg(dev, "drm atomic disable\n"); + ctx->connector = NULL; anx7625_dp_stop(ctx); pm_runtime_put_sync(dev); @@ -1959,11 +1988,14 @@ static struct edid *anx7625_bridge_get_edid(struct drm_bridge *bridge, static const struct drm_bridge_funcs anx7625_bridge_funcs = { .attach = anx7625_bridge_attach, - .disable = anx7625_bridge_disable, .mode_valid = anx7625_bridge_mode_valid, .mode_set = anx7625_bridge_mode_set, - .mode_fixup = anx7625_bridge_mode_fixup, - .enable = anx7625_bridge_enable, + .atomic_check = anx7625_bridge_atomic_check, + .atomic_enable = anx7625_bridge_atomic_enable, + .atomic_disable = anx7625_bridge_atomic_disable, + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, + .atomic_reset = drm_atomic_helper_bridge_reset, .detect = anx7625_bridge_detect, .get_edid = anx7625_bridge_get_edid, }; diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.h b/drivers/gpu/drm/bridge/analogix/anx7625.h index 3d79b6fb13c8..6f9d5f0e377c 100644 --- a/drivers/gpu/drm/bridge/analogix/anx7625.h +++ b/drivers/gpu/drm/bridge/analogix/anx7625.h @@ -407,6 +407,7 @@ struct anx7625_data { u8 display_timing_valid; struct drm_bridge bridge; u8 bridge_attached; + struct drm_connector *connector; struct mipi_dsi_device *dsi; }; -- 2.25.1

1 2

[Bug 215001] Regression in 5.15, Firmware-initialized graphics console selects FB_VGA16, screen corruption
by bugzilla-daemon＠bugzilla.kernel.org 06 Jan '22

06 Jan '22

https://bugzilla.kernel.org/show_bug.cgi?id=215001 --- Comment #3 from Kris Karas (bugs-a21(a)moonlit-rail.com) --- Added Javier Martinez to the CC list, as he's the patch author. I just bisected this bug. "First bad commit" is d391c58271072d0b0fad93c82018d495b2633448 Author: Javier Martinez Canillas <javierm(a)redhat.com> Date: Fri Jun 25 15:09:46 2021 +0200 drivers/firmware: move x86 Generic System Framebuffers support The x86 architecture has generic support to register a system framebuffer platform device. It either registers a "simple-framebuffer" if the config option CONFIG_X86_SYSFB is enabled, or a legacy VGA/VBE/EFI FB device. But the code is generic enough to be reused by other architectures and can be moved out of the arch/x86 directory. This will allow to also support the simple{fb,drm} drivers on non-x86 EFI platforms, such as aarch64 where these drivers are only supported with DT. Signed-off-by: Javier Martinez Canillas <javierm(a)redhat.com> Acked-by: Borislav Petkov <bp(a)suse.de> Acked-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Acked-by: Daniel Vetter <daniel.vetter(a)ffwll.ch> Signed-off-by: Thomas Zimmermann <tzimmermann(a)suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20210625130947.1803678-2-javi… -- You may reply to this email to add a comment. You are receiving this mail because: You are on the CC list for the bug.

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dri-devel January 2022