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Message-Id: <20210916181601.9146-4-tzimmermann@suse.de>
Date: Thu, 16 Sep 2021 20:15:59 +0200
From: Thomas Zimmermann <tzimmermann@...e.de>
To: airlied@...hat.com, airlied@...ux.ie, daniel@...ll.ch,
hdegoede@...hat.com, marcan@...can.st, maz@...nel.org,
akpm@...ux-foundation.org, npiggin@...il.com,
thunder.leizhen@...wei.com, gregkh@...uxfoundation.org
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
Thomas Zimmermann <tzimmermann@...e.de>
Subject: [PATCH 3/5] drm/ast: Use managed interfaces for framebuffer write combining
Replace arch_phys_wc_add() and arch_io_reserve_memtype_wc() with
the rsp managed functions. Allows for removing the cleanup code
for memory management
Signed-off-by: Thomas Zimmermann <tzimmermann@...e.de>
---
drivers/gpu/drm/ast/ast_drv.h | 2 --
drivers/gpu/drm/ast/ast_mm.c | 27 ++++++++++-----------------
2 files changed, 10 insertions(+), 19 deletions(-)
diff --git a/drivers/gpu/drm/ast/ast_drv.h b/drivers/gpu/drm/ast/ast_drv.h
index 39ca338eb80b..2cfce7dc95af 100644
--- a/drivers/gpu/drm/ast/ast_drv.h
+++ b/drivers/gpu/drm/ast/ast_drv.h
@@ -158,8 +158,6 @@ struct ast_private {
uint32_t dram_type;
uint32_t mclk;
- int fb_mtrr;
-
struct drm_plane primary_plane;
struct ast_cursor_plane cursor_plane;
struct drm_crtc crtc;
diff --git a/drivers/gpu/drm/ast/ast_mm.c b/drivers/gpu/drm/ast/ast_mm.c
index 7592f1b9e1f1..6e999408dda9 100644
--- a/drivers/gpu/drm/ast/ast_mm.c
+++ b/drivers/gpu/drm/ast/ast_mm.c
@@ -74,35 +74,28 @@ static u32 ast_get_vram_size(struct ast_private *ast)
return vram_size;
}
-static void ast_mm_release(struct drm_device *dev, void *ptr)
-{
- struct ast_private *ast = to_ast_private(dev);
- struct pci_dev *pdev = to_pci_dev(dev->dev);
-
- arch_phys_wc_del(ast->fb_mtrr);
- arch_io_free_memtype_wc(pci_resource_start(pdev, 0),
- pci_resource_len(pdev, 0));
-}
-
int ast_mm_init(struct ast_private *ast)
{
struct drm_device *dev = &ast->base;
struct pci_dev *pdev = to_pci_dev(dev->dev);
+ resource_size_t base, size;
u32 vram_size;
int ret;
+ base = pci_resource_start(pdev, 0);
+ size = pci_resource_len(pdev, 0);
+
+ /* Don't fail on errors, but performance might be reduced. */
+ devm_arch_io_reserve_memtype_wc(dev->dev, base, size);
+ devm_arch_phys_wc_add(dev->dev, base, size);
+
vram_size = ast_get_vram_size(ast);
- ret = drmm_vram_helper_init(dev, pci_resource_start(pdev, 0), vram_size);
+ ret = drmm_vram_helper_init(dev, base, vram_size);
if (ret) {
drm_err(dev, "Error initializing VRAM MM; %d\n", ret);
return ret;
}
- arch_io_reserve_memtype_wc(pci_resource_start(pdev, 0),
- pci_resource_len(pdev, 0));
- ast->fb_mtrr = arch_phys_wc_add(pci_resource_start(pdev, 0),
- pci_resource_len(pdev, 0));
-
- return drmm_add_action_or_reset(dev, ast_mm_release, NULL);
+ return 0;
}
--
2.33.0
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