Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753442AbZKJKuN (ORCPT ); Tue, 10 Nov 2009 05:50:13 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753032AbZKJKuK (ORCPT ); Tue, 10 Nov 2009 05:50:10 -0500 Received: from sh.osrg.net ([192.16.179.4]:33795 "EHLO sh.osrg.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752825AbZKJKuE (ORCPT ); Tue, 10 Nov 2009 05:50:04 -0500 From: FUJITA Tomonori To: linux-kernel@vger.kernel.org Cc: mingo@elte.hu, chrisw@sous-sol.org, wmw2@infradead.org, joerg.roedel@amd.com, muli@il.ibm.com, fujita.tomonori@lab.ntt.co.jp Subject: [PATCH -v2 3/9] GART: convert gart_iommu_hole_init to use iommu_init hook Date: Tue, 10 Nov 2009 19:46:14 +0900 Message-Id: <1257849980-22640-4-git-send-email-fujita.tomonori@lab.ntt.co.jp> X-Mailer: git-send-email 1.5.6.5 In-Reply-To: <1257849980-22640-1-git-send-email-fujita.tomonori@lab.ntt.co.jp> References: <1257849980-22640-1-git-send-email-fujita.tomonori@lab.ntt.co.jp> X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-3.0 (sh.osrg.net [192.16.179.4]); Tue, 10 Nov 2009 19:49:32 +0900 (JST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3848 Lines: 128 This changes gart_iommu_hole_init() to set gart_iommu_init() to iommu_init hook if gart_iommu_hole_init() finds the GART IOMMU. We can kill the code to check if we found the IOMMU in gart_iommu_init() since gart_iommu_hole_init() sets gart_iommu_init() only when it found the IOMMU. Signed-off-by: FUJITA Tomonori --- arch/x86/include/asm/gart.h | 5 +---- arch/x86/kernel/aperture_64.c | 2 ++ arch/x86/kernel/pci-dma.c | 2 -- arch/x86/kernel/pci-gart_64.c | 15 +++++---------- 4 files changed, 8 insertions(+), 16 deletions(-) diff --git a/arch/x86/include/asm/gart.h b/arch/x86/include/asm/gart.h index 4fdd5b3..4ac5b0f 100644 --- a/arch/x86/include/asm/gart.h +++ b/arch/x86/include/asm/gart.h @@ -35,7 +35,7 @@ extern int gart_iommu_aperture_allowed; extern int gart_iommu_aperture_disabled; extern void early_gart_iommu_check(void); -extern void gart_iommu_init(void); +extern int gart_iommu_init(void); extern void __init gart_parse_options(char *); extern void gart_iommu_hole_init(void); @@ -47,9 +47,6 @@ extern void gart_iommu_hole_init(void); static inline void early_gart_iommu_check(void) { } -static inline void gart_iommu_init(void) -{ -} static inline void gart_parse_options(char *options) { } diff --git a/arch/x86/kernel/aperture_64.c b/arch/x86/kernel/aperture_64.c index 128111d..03933cf 100644 --- a/arch/x86/kernel/aperture_64.c +++ b/arch/x86/kernel/aperture_64.c @@ -28,6 +28,7 @@ #include #include #include +#include int gart_iommu_aperture; int gart_iommu_aperture_disabled __initdata; @@ -400,6 +401,7 @@ void __init gart_iommu_hole_init(void) iommu_detected = 1; gart_iommu_aperture = 1; + x86_init.iommu.iommu_init = gart_iommu_init; aper_order = (read_pci_config(bus, slot, 3, AMD64_GARTAPERTURECTL) >> 1) & 7; aper_size = (32 * 1024 * 1024) << aper_order; diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c index 0224da8..ecde854 100644 --- a/arch/x86/kernel/pci-dma.c +++ b/arch/x86/kernel/pci-dma.c @@ -298,8 +298,6 @@ static int __init pci_iommu_init(void) amd_iommu_init(); - gart_iommu_init(); - no_iommu_init(); return 0; } diff --git a/arch/x86/kernel/pci-gart_64.c b/arch/x86/kernel/pci-gart_64.c index eb46ab3..0410bd3 100644 --- a/arch/x86/kernel/pci-gart_64.c +++ b/arch/x86/kernel/pci-gart_64.c @@ -709,7 +709,7 @@ static void gart_iommu_shutdown(void) } } -void __init gart_iommu_init(void) +int __init gart_iommu_init(void) { struct agp_kern_info info; unsigned long iommu_start; @@ -719,7 +719,7 @@ void __init gart_iommu_init(void) long i; if (cache_k8_northbridges() < 0 || num_k8_northbridges == 0) - return; + return 0; #ifndef CONFIG_AGP_AMD64 no_agp = 1; @@ -731,13 +731,6 @@ void __init gart_iommu_init(void) (agp_copy_info(agp_bridge, &info) < 0); #endif - if (swiotlb) - return; - - /* Did we detect a different HW IOMMU? */ - if (iommu_detected && !gart_iommu_aperture) - return; - if (no_iommu || (!force_iommu && max_pfn <= MAX_DMA32_PFN) || !gart_iommu_aperture || @@ -747,7 +740,7 @@ void __init gart_iommu_init(void) "but GART IOMMU not available.\n"); printk(KERN_WARNING "falling back to iommu=soft.\n"); } - return; + return 0; } /* need to map that range */ @@ -840,6 +833,8 @@ void __init gart_iommu_init(void) flush_gart(); dma_ops = &gart_dma_ops; x86_platform.iommu_shutdown = gart_iommu_shutdown; + + return 0; } void __init gart_parse_options(char *p) -- 1.5.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/