From: Lucas De Marchi <lucas.demarchi@intel.com> To: intel-gfx@lists.freedesktop.org Cc: "Tvrtko Ursulin" <tvrtko.ursulin@linux.intel.com>, "Thomas Hellström" <thomas.hellstrom@linux.intel.com>, "David Airlie" <airlied@linux.ie>, dri-devel@lists.freedesktop.org, "Matthew Auld" <matthew.auld@intel.com> Subject: [PATCH 03/19] drm/i915/gt: Add helper for shmem copy to dma_buf_map Date: Wed, 26 Jan 2022 12:36:46 -0800 [thread overview] Message-ID: <20220126203702.1784589-4-lucas.demarchi@intel.com> (raw) In-Reply-To: <20220126203702.1784589-1-lucas.demarchi@intel.com> Add a variant of shmem_read() that takes a dma_buf_map pointer rather than a plain pointer as argument. It's mostly a copy __shmem_rw() but adapting the api and removing the write support since there's currently only need to use dma_buf_map as destination. Reworking __shmem_rw() to share the implementation was tempting, but finding a good balance between reuse and clarity pushed towards a little code duplication. Since the function is small, just add the similar function with a copy/paste/adapt approach. Cc: Matt Roper <matthew.d.roper@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Matthew Auld <matthew.auld@intel.com> Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com> --- drivers/gpu/drm/i915/gt/shmem_utils.c | 32 +++++++++++++++++++++++++++ drivers/gpu/drm/i915/gt/shmem_utils.h | 3 +++ 2 files changed, 35 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/shmem_utils.c b/drivers/gpu/drm/i915/gt/shmem_utils.c index 0683b27a3890..d7968e68ccfb 100644 --- a/drivers/gpu/drm/i915/gt/shmem_utils.c +++ b/drivers/gpu/drm/i915/gt/shmem_utils.c @@ -3,6 +3,7 @@ * Copyright © 2020 Intel Corporation */ +#include <linux/dma-buf-map.h> #include <linux/mm.h> #include <linux/pagemap.h> #include <linux/shmem_fs.h> @@ -123,6 +124,37 @@ static int __shmem_rw(struct file *file, loff_t off, return 0; } +int shmem_read_to_dma_buf_map(struct file *file, loff_t off, + struct dma_buf_map *map, size_t len) +{ + struct dma_buf_map map_iter = *map; + unsigned long pfn; + + for (pfn = off >> PAGE_SHIFT; len; pfn++) { + unsigned int this = + min_t(size_t, PAGE_SIZE - offset_in_page(off), len); + struct page *page; + void *vaddr; + + page = shmem_read_mapping_page_gfp(file->f_mapping, pfn, + GFP_KERNEL); + if (IS_ERR(page)) + return PTR_ERR(page); + + vaddr = kmap(page); + dma_buf_map_memcpy_to(&map_iter, vaddr + offset_in_page(off), this); + mark_page_accessed(page); + kunmap(page); + put_page(page); + + len -= this; + dma_buf_map_incr(&map_iter, this); + off = 0; + } + + return 0; +} + int shmem_read(struct file *file, loff_t off, void *dst, size_t len) { return __shmem_rw(file, off, dst, len, false); diff --git a/drivers/gpu/drm/i915/gt/shmem_utils.h b/drivers/gpu/drm/i915/gt/shmem_utils.h index c1669170c351..a3d4ce966f74 100644 --- a/drivers/gpu/drm/i915/gt/shmem_utils.h +++ b/drivers/gpu/drm/i915/gt/shmem_utils.h @@ -8,6 +8,7 @@ #include <linux/types.h> +struct dma_buf_map; struct drm_i915_gem_object; struct file; @@ -17,6 +18,8 @@ struct file *shmem_create_from_object(struct drm_i915_gem_object *obj); void *shmem_pin_map(struct file *file); void shmem_unpin_map(struct file *file, void *ptr); +int shmem_read_to_dma_buf_map(struct file *file, loff_t off, + struct dma_buf_map *map, size_t len); int shmem_read(struct file *file, loff_t off, void *dst, size_t len); int shmem_write(struct file *file, loff_t off, void *src, size_t len); -- 2.35.0
WARNING: multiple messages have this Message-ID (diff)
From: Lucas De Marchi <lucas.demarchi@intel.com> To: intel-gfx@lists.freedesktop.org Cc: "Thomas Hellström" <thomas.hellstrom@linux.intel.com>, "David Airlie" <airlied@linux.ie>, dri-devel@lists.freedesktop.org, "Matthew Auld" <matthew.auld@intel.com> Subject: [Intel-gfx] [PATCH 03/19] drm/i915/gt: Add helper for shmem copy to dma_buf_map Date: Wed, 26 Jan 2022 12:36:46 -0800 [thread overview] Message-ID: <20220126203702.1784589-4-lucas.demarchi@intel.com> (raw) In-Reply-To: <20220126203702.1784589-1-lucas.demarchi@intel.com> Add a variant of shmem_read() that takes a dma_buf_map pointer rather than a plain pointer as argument. It's mostly a copy __shmem_rw() but adapting the api and removing the write support since there's currently only need to use dma_buf_map as destination. Reworking __shmem_rw() to share the implementation was tempting, but finding a good balance between reuse and clarity pushed towards a little code duplication. Since the function is small, just add the similar function with a copy/paste/adapt approach. Cc: Matt Roper <matthew.d.roper@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Cc: David Airlie <airlied@linux.ie> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: Matthew Auld <matthew.auld@intel.com> Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com> --- drivers/gpu/drm/i915/gt/shmem_utils.c | 32 +++++++++++++++++++++++++++ drivers/gpu/drm/i915/gt/shmem_utils.h | 3 +++ 2 files changed, 35 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/shmem_utils.c b/drivers/gpu/drm/i915/gt/shmem_utils.c index 0683b27a3890..d7968e68ccfb 100644 --- a/drivers/gpu/drm/i915/gt/shmem_utils.c +++ b/drivers/gpu/drm/i915/gt/shmem_utils.c @@ -3,6 +3,7 @@ * Copyright © 2020 Intel Corporation */ +#include <linux/dma-buf-map.h> #include <linux/mm.h> #include <linux/pagemap.h> #include <linux/shmem_fs.h> @@ -123,6 +124,37 @@ static int __shmem_rw(struct file *file, loff_t off, return 0; } +int shmem_read_to_dma_buf_map(struct file *file, loff_t off, + struct dma_buf_map *map, size_t len) +{ + struct dma_buf_map map_iter = *map; + unsigned long pfn; + + for (pfn = off >> PAGE_SHIFT; len; pfn++) { + unsigned int this = + min_t(size_t, PAGE_SIZE - offset_in_page(off), len); + struct page *page; + void *vaddr; + + page = shmem_read_mapping_page_gfp(file->f_mapping, pfn, + GFP_KERNEL); + if (IS_ERR(page)) + return PTR_ERR(page); + + vaddr = kmap(page); + dma_buf_map_memcpy_to(&map_iter, vaddr + offset_in_page(off), this); + mark_page_accessed(page); + kunmap(page); + put_page(page); + + len -= this; + dma_buf_map_incr(&map_iter, this); + off = 0; + } + + return 0; +} + int shmem_read(struct file *file, loff_t off, void *dst, size_t len) { return __shmem_rw(file, off, dst, len, false); diff --git a/drivers/gpu/drm/i915/gt/shmem_utils.h b/drivers/gpu/drm/i915/gt/shmem_utils.h index c1669170c351..a3d4ce966f74 100644 --- a/drivers/gpu/drm/i915/gt/shmem_utils.h +++ b/drivers/gpu/drm/i915/gt/shmem_utils.h @@ -8,6 +8,7 @@ #include <linux/types.h> +struct dma_buf_map; struct drm_i915_gem_object; struct file; @@ -17,6 +18,8 @@ struct file *shmem_create_from_object(struct drm_i915_gem_object *obj); void *shmem_pin_map(struct file *file); void shmem_unpin_map(struct file *file, void *ptr); +int shmem_read_to_dma_buf_map(struct file *file, loff_t off, + struct dma_buf_map *map, size_t len); int shmem_read(struct file *file, loff_t off, void *dst, size_t len); int shmem_write(struct file *file, loff_t off, void *src, size_t len); -- 2.35.0
next prev parent reply other threads:[~2022-01-26 20:36 UTC|newest] Thread overview: 133+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-01-26 20:36 [PATCH 00/19] drm/i915/guc: Refactor ADS access to use dma_buf_map Lucas De Marchi 2022-01-26 20:36 ` [Intel-gfx] " Lucas De Marchi 2022-01-26 20:36 ` Lucas De Marchi 2022-01-26 20:36 ` [PATCH 01/19] dma-buf-map: Add read/write helpers Lucas De Marchi 2022-01-26 20:36 ` [Intel-gfx] " Lucas De Marchi 2022-01-26 20:36 ` Lucas De Marchi 2022-01-27 7:24 ` Christian König 2022-01-27 7:24 ` [Intel-gfx] " Christian König 2022-01-27 7:24 ` Christian König 2022-01-27 7:36 ` Matthew Brost 2022-01-27 7:36 ` [Intel-gfx] " Matthew Brost 2022-01-27 7:36 ` Matthew Brost 2022-01-27 7:59 ` Christian König 2022-01-27 7:59 ` [Intel-gfx] " Christian König 2022-01-27 7:59 ` Christian König 2022-01-27 9:02 ` [Intel-gfx] " Daniel Vetter 2022-01-27 9:02 ` Daniel Vetter 2022-01-27 14:26 ` Thomas Zimmermann 2022-01-27 14:26 ` [Intel-gfx] " Thomas Zimmermann 2022-01-27 14:26 ` Thomas Zimmermann 2022-01-27 16:34 ` Lucas De Marchi 2022-01-27 16:34 ` [Intel-gfx] " Lucas De Marchi 2022-01-27 16:34 ` Lucas De Marchi 2022-01-28 8:32 ` Thomas Zimmermann 2022-01-28 8:32 ` [Intel-gfx] " Thomas Zimmermann 2022-01-28 8:32 ` Thomas Zimmermann 2022-01-26 20:36 ` [PATCH 02/19] dma-buf-map: Add helper to initialize second map Lucas De Marchi 2022-01-26 20:36 ` Lucas De Marchi 2022-01-26 20:36 ` [Intel-gfx] " Lucas De Marchi 2022-01-27 7:27 ` Christian König 2022-01-27 7:27 ` [Intel-gfx] " Christian König 2022-01-27 7:27 ` Christian König 2022-01-27 7:57 ` Lucas De Marchi 2022-01-27 7:57 ` [Intel-gfx] " Lucas De Marchi 2022-01-27 7:57 ` Lucas De Marchi 2022-01-27 8:02 ` Christian König 2022-01-27 8:02 ` [Intel-gfx] " Christian König 2022-01-27 8:02 ` Christian König 2022-01-27 8:18 ` [Intel-gfx] " Lucas De Marchi 2022-01-27 8:55 ` Christian König 2022-01-27 9:12 ` Lucas De Marchi 2022-01-27 9:12 ` Lucas De Marchi 2022-01-27 9:21 ` Christian König 2022-01-27 9:21 ` Christian König 2022-01-27 8:57 ` Daniel Vetter 2022-01-27 8:57 ` [Intel-gfx] " Daniel Vetter 2022-01-27 8:57 ` Daniel Vetter 2022-01-27 9:33 ` [Intel-gfx] " Lucas De Marchi 2022-01-27 10:00 ` Daniel Vetter 2022-01-27 10:00 ` Daniel Vetter 2022-01-27 10:21 ` Christian König 2022-01-27 11:16 ` Daniel Vetter 2022-01-27 11:16 ` Daniel Vetter 2022-01-27 11:44 ` [Linaro-mm-sig] " Christian König 2022-01-27 11:44 ` [Intel-gfx] [Linaro-mm-sig] " Christian König 2022-01-27 11:56 ` [Linaro-mm-sig] Re: [Intel-gfx] " Daniel Vetter 2022-01-27 11:56 ` Daniel Vetter 2022-01-27 11:56 ` [Intel-gfx] [Linaro-mm-sig] " Daniel Vetter 2022-01-27 16:13 ` [Linaro-mm-sig] Re: [Intel-gfx] " Lucas De Marchi 2022-01-27 16:13 ` [Intel-gfx] [Linaro-mm-sig] " Lucas De Marchi 2022-01-27 16:13 ` [Linaro-mm-sig] Re: [Intel-gfx] " Lucas De Marchi 2022-01-27 14:52 ` Thomas Zimmermann 2022-01-27 16:12 ` Lucas De Marchi 2022-01-27 14:33 ` Thomas Zimmermann 2022-01-27 14:33 ` [Intel-gfx] " Thomas Zimmermann 2022-01-27 14:33 ` Thomas Zimmermann 2022-01-27 15:59 ` [Intel-gfx] " Lucas De Marchi 2022-01-27 15:59 ` Lucas De Marchi 2022-01-28 8:15 ` Thomas Zimmermann 2022-01-28 8:34 ` Thomas Zimmermann 2022-01-26 20:36 ` Lucas De Marchi [this message] 2022-01-26 20:36 ` [Intel-gfx] [PATCH 03/19] drm/i915/gt: Add helper for shmem copy to dma_buf_map Lucas De Marchi 2022-01-26 20:36 ` [Intel-gfx] [PATCH 04/19] drm/i915/guc: Keep dma_buf_map of ads_blob around Lucas De Marchi 2022-01-26 20:36 ` Lucas De Marchi 2022-01-26 20:36 ` [PATCH 05/19] drm/i915/guc: Add read/write helpers for ADS blob Lucas De Marchi 2022-01-26 20:36 ` [Intel-gfx] " Lucas De Marchi 2022-01-26 20:36 ` [Intel-gfx] [PATCH 06/19] drm/i915/guc: Convert golden context init to dma_buf_map Lucas De Marchi 2022-01-26 20:36 ` Lucas De Marchi 2022-01-26 20:36 ` [PATCH 07/19] drm/i915/guc: Convert policies update " Lucas De Marchi 2022-01-26 20:36 ` [Intel-gfx] " Lucas De Marchi 2022-01-26 20:36 ` [PATCH 08/19] drm/i915/guc: Convert engine record " Lucas De Marchi 2022-01-26 20:36 ` [Intel-gfx] " Lucas De Marchi 2022-01-26 20:36 ` [PATCH 09/19] dma-buf-map: Add wrapper over memset Lucas De Marchi 2022-01-26 20:36 ` Lucas De Marchi 2022-01-26 20:36 ` [Intel-gfx] " Lucas De Marchi 2022-01-27 7:28 ` Christian König 2022-01-27 7:28 ` [Intel-gfx] " Christian König 2022-01-27 7:28 ` Christian König 2022-01-27 14:54 ` Thomas Zimmermann 2022-01-27 14:54 ` [Intel-gfx] " Thomas Zimmermann 2022-01-27 14:54 ` Thomas Zimmermann 2022-01-27 15:38 ` [Intel-gfx] " Lucas De Marchi 2022-01-27 15:38 ` Lucas De Marchi 2022-01-27 15:47 ` Thomas Zimmermann 2022-01-26 20:36 ` [PATCH 10/19] drm/i915/guc: Convert guc_ads_private_data_reset to dma_buf_map Lucas De Marchi 2022-01-26 20:36 ` [Intel-gfx] " Lucas De Marchi 2022-01-26 20:36 ` [PATCH 11/19] drm/i915/guc: Convert golden context prep " Lucas De Marchi 2022-01-26 20:36 ` [Intel-gfx] " Lucas De Marchi 2022-01-26 20:36 ` [PATCH 12/19] drm/i915/guc: Replace check for golden context size Lucas De Marchi 2022-01-26 20:36 ` [Intel-gfx] " Lucas De Marchi 2022-01-26 20:36 ` [Intel-gfx] [PATCH 13/19] drm/i915/guc: Convert mapping table to dma_buf_map Lucas De Marchi 2022-01-26 20:36 ` Lucas De Marchi 2022-01-26 20:36 ` [PATCH 14/19] drm/i915/guc: Convert capture list " Lucas De Marchi 2022-01-26 20:36 ` [Intel-gfx] " Lucas De Marchi 2022-01-26 20:36 ` [PATCH 15/19] drm/i915/guc: Prepare for error propagation Lucas De Marchi 2022-01-26 20:36 ` [Intel-gfx] " Lucas De Marchi 2022-01-26 20:36 ` [PATCH 16/19] drm/i915/guc: Use a single pass to calculate regset Lucas De Marchi 2022-01-26 20:36 ` [Intel-gfx] " Lucas De Marchi 2022-01-27 0:29 ` kernel test robot 2022-01-27 0:29 ` kernel test robot 2022-01-27 0:29 ` [Intel-gfx] " kernel test robot 2022-01-27 2:02 ` kernel test robot 2022-01-27 2:02 ` kernel test robot 2022-01-27 2:02 ` [Intel-gfx] " kernel test robot 2022-01-27 2:02 ` kernel test robot 2022-01-27 4:37 ` kernel test robot 2022-01-27 4:37 ` kernel test robot 2022-01-27 4:37 ` [Intel-gfx] " kernel test robot 2022-02-01 22:42 ` Daniele Ceraolo Spurio 2022-02-01 22:42 ` [Intel-gfx] " Daniele Ceraolo Spurio 2022-02-03 23:44 ` Lucas De Marchi 2022-02-03 23:44 ` [Intel-gfx] " Lucas De Marchi 2022-01-26 20:37 ` [PATCH 17/19] drm/i915/guc: Convert guc_mmio_reg_state_init to dma_buf_map Lucas De Marchi 2022-01-26 20:37 ` [Intel-gfx] " Lucas De Marchi 2022-01-26 20:37 ` [PATCH 18/19] drm/i915/guc: Convert __guc_ads_init " Lucas De Marchi 2022-01-26 20:37 ` [Intel-gfx] " Lucas De Marchi 2022-01-26 20:37 ` [PATCH 19/19] drm/i915/guc: Remove plain ads_blob pointer Lucas De Marchi 2022-01-26 20:37 ` [Intel-gfx] " Lucas De Marchi 2022-01-26 23:17 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm/i915/guc: Refactor ADS access to use dma_buf_map Patchwork 2022-01-26 23:19 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork 2022-01-26 23:42 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork 2022-01-26 23:42 ` [Intel-gfx] ✗ Fi.CI.BUILD: warning " Patchwork 2022-01-27 5:01 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
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