[13/22] drm/i915: treat shmem as a region

Message ID	20190927173409.31175-14-matthew.auld@intel.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <SRS0=O1UT=XW=lists.freedesktop.org=intel-gfx-bounces@kernel.org> DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1AD5C207FF From: Matthew Auld <matthew.auld@intel.com> To: intel-gfx@lists.freedesktop.org Date: Fri, 27 Sep 2019 18:34:00 +0100 Message-Id: <20190927173409.31175-14-matthew.auld@intel.com> In-Reply-To: <20190927173409.31175-1-matthew.auld@intel.com> References: <20190927173409.31175-1-matthew.auld@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 13/22] drm/i915: treat shmem as a region Precedence: list Cc: daniel.vetter@ffwll.ch Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>
Series	LMEM basics \| expand [00/22] LMEM basics [01/22] drm/i915: check for kernel_context [02/22] drm/i915: simplify i915_gem_init_early [03/22] drm/i915: introduce intel_memory_region [04/22] drm/i915/region: support continuous allocations [05/22] drm/i915/region: support volatile objects [06/22] drm/i915: Add memory region information to device_info [07/22] drm/i915: support creating LMEM objects [08/22] drm/i915: setup io-mapping for LMEM [09/22] drm/i915/lmem: support kernel mapping [10/22] drm/i915/selftests: add write-dword test for LMEM [11/22] drm/i915/selftest: extend coverage to include LMEM huge-pages [12/22] drm/i915: enumerate and init each supported region [13/22] drm/i915: treat shmem as a region [14/22] drm/i915: treat stolen as a region [15/22] drm/i915: define HAS_MAPPABLE_APERTURE [16/22] drm/i915: do not map aperture if it is not available. [17/22] drm/i915: set num_fence_regs to 0 if there is no aperture [18/22] drm/i915/selftests: check for missing aperture [19/22] drm/i915: error capture with no ggtt slot [20/22] drm/i915: Don't try to place HWS in non-existing mappable region [21/22] drm/i915: check for missing aperture in GTT pread/pwrite paths [22/22] HAX drm/i915: add the fake lmem region

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_phys.c b/drivers/gpu/drm/i915/gem/i915_gem_phys.c index 768356908160..8043ff63d73f 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_phys.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_phys.c @@ -16,6 +16,7 @@ #include "gt/intel_gt.h" #include "i915_drv.h" #include "i915_gem_object.h" +#include "i915_gem_region.h" #include "i915_scatterlist.h" static int i915_gem_object_get_pages_phys(struct drm_i915_gem_object *obj) @@ -191,8 +192,10 @@ int i915_gem_object_attach_phys(struct drm_i915_gem_object *obj, int align) /* Perma-pin (until release) the physical set of pages */ __i915_gem_object_pin_pages(obj); - if (!IS_ERR_OR_NULL(pages)) + if (!IS_ERR_OR_NULL(pages)) { i915_gem_shmem_ops.put_pages(obj, pages); + i915_gem_object_release_memory_region(obj); + } mutex_unlock(&obj->mm.lock); return 0; diff --git a/drivers/gpu/drm/i915/gem/i915_gem_region.c b/drivers/gpu/drm/i915/gem/i915_gem_region.c index e9550e0364cc..0aeaebb41050 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_region.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_region.c @@ -6,6 +6,7 @@ #include "intel_memory_region.h" #include "i915_gem_region.h" #include "i915_drv.h" +#include "i915_trace.h" void i915_gem_object_put_pages_buddy(struct drm_i915_gem_object *obj, @@ -144,11 +145,22 @@ i915_gem_object_create_region(struct intel_memory_region *mem, GEM_BUG_ON(!size); GEM_BUG_ON(!IS_ALIGNED(size, I915_GTT_MIN_ALIGNMENT)); + /* + * There is a prevalence of the assumption that we fit the object's + * page count inside a 32bit _signed_ variable. Let's document this and + * catch if we ever need to fix it. In the meantime, if you do spot + * such a local variable, please consider fixing! + */ + if (size >> PAGE_SHIFT > INT_MAX) return ERR_PTR(-E2BIG); if (overflows_type(size, obj->base.size)) return ERR_PTR(-E2BIG); - return mem->ops->create_object(mem, size, flags); + obj = mem->ops->create_object(mem, size, flags); + if (!IS_ERR(obj)) + trace_i915_gem_object_create(obj); + + return obj; } diff --git a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c b/drivers/gpu/drm/i915/gem/i915_gem_shmem.c index 9f5d903f7793..696e15e8c410 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_shmem.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_shmem.c @@ -7,7 +7,9 @@ #include <linux/pagevec.h> #include <linux/swap.h> +#include "gem/i915_gem_region.h" #include "i915_drv.h" +#include "i915_gemfs.h" #include "i915_gem_object.h" #include "i915_scatterlist.h" #include "i915_trace.h" @@ -26,6 +28,7 @@ static void check_release_pagevec(struct pagevec *pvec) static int shmem_get_pages(struct drm_i915_gem_object *obj) { struct drm_i915_private *i915 = to_i915(obj->base.dev); + struct intel_memory_region *mem = obj->mm.region; const unsigned long page_count = obj->base.size / PAGE_SIZE; unsigned long i; struct address_space *mapping; @@ -52,7 +55,7 @@ static int shmem_get_pages(struct drm_i915_gem_object *obj) * If there's no chance of allocating enough pages for the whole * object, bail early. */ - if (page_count > totalram_pages()) + if (obj->base.size > resource_size(&mem->region)) return -ENOMEM; st = kmalloc(sizeof(*st), GFP_KERNEL); @@ -417,6 +420,8 @@ shmem_pwrite(struct drm_i915_gem_object *obj, static void shmem_release(struct drm_i915_gem_object *obj) { + i915_gem_object_release_memory_region(obj); + fput(obj->base.filp); } @@ -435,7 +440,7 @@ const struct drm_i915_gem_object_ops i915_gem_shmem_ops = { .release = shmem_release, }; -static int create_shmem(struct drm_i915_private *i915, +static int __create_shmem(struct drm_i915_private *i915, struct drm_gem_object *obj, size_t size) { @@ -456,31 +461,23 @@ static int create_shmem(struct drm_i915_private *i915, return 0; } -struct drm_i915_gem_object * -i915_gem_object_create_shmem(struct drm_i915_private *i915, u64 size) +static struct drm_i915_gem_object * +create_shmem(struct intel_memory_region *mem, + resource_size_t size, + unsigned flags) { + struct drm_i915_private *i915 = mem->i915; struct drm_i915_gem_object *obj; struct address_space *mapping; unsigned int cache_level; gfp_t mask; int ret; - /* There is a prevalence of the assumption that we fit the object's - * page count inside a 32bit _signed_ variable. Let's document this and - * catch if we ever need to fix it. In the meantime, if you do spot - * such a local variable, please consider fixing! - */ - if (size >> PAGE_SHIFT > INT_MAX) - return ERR_PTR(-E2BIG); - - if (overflows_type(size, obj->base.size)) - return ERR_PTR(-E2BIG); - obj = i915_gem_object_alloc(); if (!obj) return ERR_PTR(-ENOMEM); - ret = create_shmem(i915, &obj->base, size); + ret = __create_shmem(i915, &obj->base, size); if (ret) goto fail; @@ -519,7 +516,7 @@ i915_gem_object_create_shmem(struct drm_i915_private *i915, u64 size) i915_gem_object_set_cache_coherency(obj, cache_level); - trace_i915_gem_object_create(obj); + i915_gem_object_init_memory_region(obj, mem, 0); return obj; @@ -528,6 +525,13 @@ i915_gem_object_create_shmem(struct drm_i915_private *i915, u64 size) return ERR_PTR(ret); } +struct drm_i915_gem_object * +i915_gem_object_create_shmem(struct drm_i915_private *i915, u64 size) +{ + return i915_gem_object_create_region(i915->mm.regions[INTEL_MEMORY_SMEM], + size, 0); +} + /* Allocate a new GEM object and fill it with the supplied data */ struct drm_i915_gem_object * i915_gem_object_create_shmem_from_data(struct drm_i915_private *dev_priv, @@ -578,3 +582,33 @@ i915_gem_object_create_shmem_from_data(struct drm_i915_private *dev_priv, i915_gem_object_put(obj); return ERR_PTR(err); } + +static int init_shmem(struct intel_memory_region *mem) +{ + int err; + + err = i915_gemfs_init(mem->i915); + if (err) + DRM_NOTE("Unable to create a private tmpfs mount, hugepage support will be disabled(%d).\n", err); + + return 0; /* Don't error, we can simply fallback to the kernel mnt */ +} + +static void release_shmem(struct intel_memory_region *mem) +{ + i915_gemfs_fini(mem->i915); +} + +static const struct intel_memory_region_ops shmem_region_ops = { + .init = init_shmem, + .release = release_shmem, + .create_object = create_shmem, +}; + +struct intel_memory_region *i915_gem_shmem_setup(struct drm_i915_private *i915) +{ + return intel_memory_region_create(i915, 0, + totalram_pages() << PAGE_SHIFT, + I915_GTT_PAGE_SIZE_4K, 0, + &shmem_region_ops); +} diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index cd1414f2bcb5..6cf13e98794a 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2263,6 +2263,8 @@ void i915_gem_cleanup_early(struct drm_i915_private *dev_priv); int i915_gem_freeze(struct drm_i915_private *dev_priv); int i915_gem_freeze_late(struct drm_i915_private *dev_priv); +struct intel_memory_region *i915_gem_shmem_setup(struct drm_i915_private *i915); + static inline void i915_gem_drain_freed_objects(struct drm_i915_private *i915) { /* diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 3d3fda4cae99..fd329b6b475c 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -45,7 +45,6 @@ #include "gem/i915_gem_context.h" #include "gem/i915_gem_ioctls.h" #include "gem/i915_gem_pm.h" -#include "gem/i915_gemfs.h" #include "gt/intel_engine_user.h" #include "gt/intel_gt.h" #include "gt/intel_gt_pm.h" @@ -1535,16 +1534,10 @@ static void i915_gem_init__mm(struct drm_i915_private *i915) void i915_gem_init_early(struct drm_i915_private *dev_priv) { - int err; - i915_gem_init__mm(dev_priv); i915_gem_init__pm(dev_priv); spin_lock_init(&dev_priv->fb_tracking.lock); - - err = i915_gemfs_init(dev_priv); - if (err) - DRM_NOTE("Unable to create a private tmpfs mount, hugepage support will be disabled(%d).\n", err); } void i915_gem_cleanup_early(struct drm_i915_private *dev_priv) @@ -1553,8 +1546,6 @@ void i915_gem_cleanup_early(struct drm_i915_private *dev_priv) GEM_BUG_ON(!llist_empty(&dev_priv->mm.free_list)); GEM_BUG_ON(atomic_read(&dev_priv->mm.free_count)); WARN_ON(dev_priv->mm.shrink_count); - - i915_gemfs_fini(dev_priv); } int i915_gem_freeze(struct drm_i915_private *dev_priv) diff --git a/drivers/gpu/drm/i915/i915_gem_gtt.c b/drivers/gpu/drm/i915/i915_gem_gtt.c index a2963677861d..67fa61e8bb18 100644 --- a/drivers/gpu/drm/i915/i915_gem_gtt.c +++ b/drivers/gpu/drm/i915/i915_gem_gtt.c @@ -2780,7 +2780,8 @@ int i915_gem_init_memory_regions(struct drm_i915_private *i915) type = MEMORY_TYPE_FROM_REGION(intel_region_map[i]); switch (type) { - default: + case INTEL_SMEM: + mem = i915_gem_shmem_setup(i915); break; } diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c index ea53dfe2fba0..9101ea1dff96 100644 --- a/drivers/gpu/drm/i915/i915_pci.c +++ b/drivers/gpu/drm/i915/i915_pci.c @@ -152,6 +152,9 @@ #define GEN_DEFAULT_PAGE_SIZES \ .page_sizes = I915_GTT_PAGE_SIZE_4K +#define GEN_DEFAULT_REGIONS \ + .memory_regions = REGION_SMEM + #define I830_FEATURES \ GEN(2), \ .is_mobile = 1, \ @@ -169,7 +172,8 @@ I9XX_PIPE_OFFSETS, \ I9XX_CURSOR_OFFSETS, \ I9XX_COLORS, \ - GEN_DEFAULT_PAGE_SIZES + GEN_DEFAULT_PAGE_SIZES, \ + GEN_DEFAULT_REGIONS #define I845_FEATURES \ GEN(2), \ @@ -186,7 +190,8 @@ I845_PIPE_OFFSETS, \ I845_CURSOR_OFFSETS, \ I9XX_COLORS, \ - GEN_DEFAULT_PAGE_SIZES + GEN_DEFAULT_PAGE_SIZES, \ + GEN_DEFAULT_REGIONS static const struct intel_device_info intel_i830_info = { I830_FEATURES, @@ -220,7 +225,8 @@ static const struct intel_device_info intel_i865g_info = { I9XX_PIPE_OFFSETS, \ I9XX_CURSOR_OFFSETS, \ I9XX_COLORS, \ - GEN_DEFAULT_PAGE_SIZES + GEN_DEFAULT_PAGE_SIZES, \ + GEN_DEFAULT_REGIONS static const struct intel_device_info intel_i915g_info = { GEN3_FEATURES, @@ -305,7 +311,8 @@ static const struct intel_device_info intel_pineview_m_info = { I9XX_PIPE_OFFSETS, \ I9XX_CURSOR_OFFSETS, \ I965_COLORS, \ - GEN_DEFAULT_PAGE_SIZES + GEN_DEFAULT_PAGE_SIZES, \ + GEN_DEFAULT_REGIONS static const struct intel_device_info intel_i965g_info = { GEN4_FEATURES, @@ -355,7 +362,8 @@ static const struct intel_device_info intel_gm45_info = { I9XX_PIPE_OFFSETS, \ I9XX_CURSOR_OFFSETS, \ ILK_COLORS, \ - GEN_DEFAULT_PAGE_SIZES + GEN_DEFAULT_PAGE_SIZES, \ + GEN_DEFAULT_REGIONS static const struct intel_device_info intel_ironlake_d_info = { GEN5_FEATURES, @@ -385,7 +393,8 @@ static const struct intel_device_info intel_ironlake_m_info = { I9XX_PIPE_OFFSETS, \ I9XX_CURSOR_OFFSETS, \ ILK_COLORS, \ - GEN_DEFAULT_PAGE_SIZES + GEN_DEFAULT_PAGE_SIZES, \ + GEN_DEFAULT_REGIONS #define SNB_D_PLATFORM \ GEN6_FEATURES, \ @@ -433,7 +442,8 @@ static const struct intel_device_info intel_sandybridge_m_gt2_info = { IVB_PIPE_OFFSETS, \ IVB_CURSOR_OFFSETS, \ IVB_COLORS, \ - GEN_DEFAULT_PAGE_SIZES + GEN_DEFAULT_PAGE_SIZES, \ + GEN_DEFAULT_REGIONS #define IVB_D_PLATFORM \ GEN7_FEATURES, \ @@ -494,6 +504,7 @@ static const struct intel_device_info intel_valleyview_info = { I9XX_CURSOR_OFFSETS, I965_COLORS, GEN_DEFAULT_PAGE_SIZES, + GEN_DEFAULT_REGIONS, }; #define G75_FEATURES \ @@ -588,6 +599,7 @@ static const struct intel_device_info intel_cherryview_info = { CHV_CURSOR_OFFSETS, CHV_COLORS, GEN_DEFAULT_PAGE_SIZES, + GEN_DEFAULT_REGIONS, }; #define GEN9_DEFAULT_PAGE_SIZES \ @@ -662,7 +674,8 @@ static const struct intel_device_info intel_skylake_gt4_info = { HSW_PIPE_OFFSETS, \ IVB_CURSOR_OFFSETS, \ IVB_COLORS, \ - GEN9_DEFAULT_PAGE_SIZES + GEN9_DEFAULT_PAGE_SIZES, \ + GEN_DEFAULT_REGIONS static const struct intel_device_info intel_broxton_info = { GEN9_LP_FEATURES, diff --git a/drivers/gpu/drm/i915/selftests/mock_gem_device.c b/drivers/gpu/drm/i915/selftests/mock_gem_device.c index f210b5043112..10ed3a503772 100644 --- a/drivers/gpu/drm/i915/selftests/mock_gem_device.c +++ b/drivers/gpu/drm/i915/selftests/mock_gem_device.c @@ -80,8 +80,6 @@ static void mock_device_release(struct drm_device *dev) destroy_workqueue(i915->wq); - i915_gemfs_fini(i915); - i915_gem_cleanup_memory_regions(i915); drm_mode_config_cleanup(&i915->drm); @@ -181,6 +179,8 @@ struct drm_i915_private *mock_gem_device(void) I915_GTT_PAGE_SIZE_64K | I915_GTT_PAGE_SIZE_2M; + mkwrite_device_info(i915)->memory_regions = REGION_SMEM; + mock_uncore_init(&i915->uncore); i915_gem_init__mm(i915); intel_gt_init_early(&i915->gt, i915); @@ -219,8 +219,6 @@ struct drm_i915_private *mock_gem_device(void) intel_engines_driver_register(i915); mutex_unlock(&i915->drm.struct_mutex); - WARN_ON(i915_gemfs_init(i915)); - err = i915_gem_init_memory_regions(i915); if (err) goto err_context;

[13/22] drm/i915: treat shmem as a region

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