linux-kernel - [PATCH v1] Support Intel Xe GPU dirver Porting on RISC-V Architecture

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Message-Id: <20250715061837.2144388-1-zhangzhijie@bosc.ac.cn>
Date: Tue, 15 Jul 2025 14:18:37 +0800
From: zhangzhijie <zhangzhijie@...c.ac.cn>
To: zhangzhijie@...c.ac.cn,
	wangran@...c.ac.cn,
	zhangjian@...c.ac.cn,
	daniel@...ll.ch,
	jani.nikula@...ux.intel.com,
	rodrigo.vivi@...el.com,
	joonas.lahtinen@...ux.intel.com,
	tursulin@...ulin.net,
	airlied@...il.com,
	intel-gfx@...ts.freedesktop.org,
	intel-xe@...ts.freedesktop.org,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1] Support Intel Xe GPU dirver Porting on RISC-V Architecture

    inb/outb speccial wire not support on other ARCH.
Should detect whether arch platform support or not.

Signed-off-by: zhangzhijie <zhangzhijie@...c.ac.cn>
---
 drivers/gpu/drm/i915/display/intel_vga.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_vga.c b/drivers/gpu/drm/i915/display/intel_vga.c
index 4b98833bfa8c..5e48e3282670 100644
--- a/drivers/gpu/drm/i915/display/intel_vga.c
+++ b/drivers/gpu/drm/i915/display/intel_vga.c
@@ -33,6 +33,7 @@ void intel_vga_disable(struct drm_i915_private *dev_priv)
 	if (intel_de_read(dev_priv, vga_reg) & VGA_DISP_DISABLE)
 		return;
 
+#if defined(CONFIG_X86) || defined(CONFIG_X86_64)
 	/* WaEnableVGAAccessThroughIOPort:ctg,elk,ilk,snb,ivb,vlv,hsw */
 	vga_get_uninterruptible(pdev, VGA_RSRC_LEGACY_IO);
 	outb(0x01, VGA_SEQ_I);
@@ -40,6 +41,7 @@ void intel_vga_disable(struct drm_i915_private *dev_priv)
 	outb(sr1 | VGA_SR01_SCREEN_OFF, VGA_SEQ_D);
 	vga_put(pdev, VGA_RSRC_LEGACY_IO);
 	udelay(300);
+#endif
 
 	intel_de_write(dev_priv, vga_reg, VGA_DISP_DISABLE);
 	intel_de_posting_read(dev_priv, vga_reg);
@@ -80,6 +82,7 @@ void intel_vga_redisable(struct drm_i915_private *i915)
 
 void intel_vga_reset_io_mem(struct drm_i915_private *i915)
 {
+#if defined(CONFIG_X86) || defined(CONFIG_X86_64)
 	struct pci_dev *pdev = to_pci_dev(i915->drm.dev);
 
 	/*
@@ -95,6 +98,7 @@ void intel_vga_reset_io_mem(struct drm_i915_private *i915)
 	vga_get_uninterruptible(pdev, VGA_RSRC_LEGACY_IO);
 	outb(inb(VGA_MIS_R), VGA_MIS_W);
 	vga_put(pdev, VGA_RSRC_LEGACY_IO);
+#endif
 }
 
 int intel_vga_register(struct drm_i915_private *i915)
-- 
2.34.1