Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756771AbaAGAzz (ORCPT ); Mon, 6 Jan 2014 19:55:55 -0500 Received: from mail-ie0-f180.google.com ([209.85.223.180]:58122 "EHLO mail-ie0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756732AbaAGAzv (ORCPT ); Mon, 6 Jan 2014 19:55:51 -0500 Subject: [PATCH v7 05/15] agp: Use pci_resource_start() to get CPU physical address for BAR To: linux-pci@vger.kernel.org, Daniel Vetter From: Bjorn Helgaas Cc: David Airlie , Yinghai Lu , Guo Chao , linux-kernel@vger.kernel.org Date: Mon, 06 Jan 2014 17:55:47 -0700 Message-ID: <20140107005547.10786.23438.stgit@bhelgaas-glaptop.roam.corp.google.com> In-Reply-To: <20140107005003.10786.85164.stgit@bhelgaas-glaptop.roam.corp.google.com> References: <20140107005003.10786.85164.stgit@bhelgaas-glaptop.roam.corp.google.com> User-Agent: StGit/0.16 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org amd_irongate_configure(), ati_configure(), and nvidia_configure() call ioremap() on an address read directly from a BAR. But a BAR contains a bus address, and ioremap() expects a CPU physical address. Use pci_resource_start() to obtain the physical address. Signed-off-by: Bjorn Helgaas --- drivers/char/agp/amd-k7-agp.c | 8 ++++---- drivers/char/agp/ati-agp.c | 8 ++++---- drivers/char/agp/nvidia-agp.c | 4 +++- 3 files changed, 11 insertions(+), 9 deletions(-) diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c index 9898ed6d5b9a..e8c2e9167e89 100644 --- a/drivers/char/agp/amd-k7-agp.c +++ b/drivers/char/agp/amd-k7-agp.c @@ -11,7 +11,7 @@ #include #include "agp.h" -#define AMD_MMBASE 0x14 +#define AMD_MMBASE_BAR 1 #define AMD_APSIZE 0xac #define AMD_MODECNTL 0xb0 #define AMD_MODECNTL2 0xb2 @@ -205,6 +205,7 @@ static int amd_irongate_fetch_size(void) static int amd_irongate_configure(void) { struct aper_size_info_lvl2 *current_size; + phys_addr_t reg; u32 temp; u16 enable_reg; @@ -212,9 +213,8 @@ static int amd_irongate_configure(void) if (!amd_irongate_private.registers) { /* Get the memory mapped registers */ - pci_read_config_dword(agp_bridge->dev, AMD_MMBASE, &temp); - temp = (temp & PCI_BASE_ADDRESS_MEM_MASK); - amd_irongate_private.registers = (volatile u8 __iomem *) ioremap(temp, 4096); + reg = pci_resource_start(agp_bridge->dev, AMD_MMBASE_BAR); + amd_irongate_private.registers = (volatile u8 __iomem *) ioremap(reg, 4096); if (!amd_irongate_private.registers) return -ENOMEM; } diff --git a/drivers/char/agp/ati-agp.c b/drivers/char/agp/ati-agp.c index 53cb310d433e..ba83c11186ce 100644 --- a/drivers/char/agp/ati-agp.c +++ b/drivers/char/agp/ati-agp.c @@ -12,7 +12,7 @@ #include #include "agp.h" -#define ATI_GART_MMBASE_ADDR 0x14 +#define ATI_GART_MMBASE_BAR 1 #define ATI_RS100_APSIZE 0xac #define ATI_RS100_IG_AGPMODE 0xb0 #define ATI_RS300_APSIZE 0xf8 @@ -196,12 +196,12 @@ static void ati_cleanup(void) static int ati_configure(void) { + phys_addr_t reg; u32 temp; /* Get the memory mapped registers */ - pci_read_config_dword(agp_bridge->dev, ATI_GART_MMBASE_ADDR, &temp); - temp = (temp & 0xfffff000); - ati_generic_private.registers = (volatile u8 __iomem *) ioremap(temp, 4096); + reg = pci_resource_start(agp_bridge->dev, ATI_GART_MMBASE_BAR); + ati_generic_private.registers = (volatile u8 __iomem *) ioremap(reg, 4096); if (!ati_generic_private.registers) return -ENOMEM; diff --git a/drivers/char/agp/nvidia-agp.c b/drivers/char/agp/nvidia-agp.c index ab65d55272c4..a1861b75eb31 100644 --- a/drivers/char/agp/nvidia-agp.c +++ b/drivers/char/agp/nvidia-agp.c @@ -106,6 +106,7 @@ static int nvidia_configure(void) { int i, rc, num_dirs; u32 apbase, aplimit; + phys_addr_t apbase_phys; struct aper_size_info_8 *current_size; u32 temp; @@ -152,8 +153,9 @@ static int nvidia_configure(void) pci_write_config_dword(agp_bridge->dev, NVIDIA_0_APSIZE, temp | 0x100); /* map aperture */ + apbase_phys = pci_resource_start(agp_bridge->dev, AGP_APERTURE_BAR); nvidia_private.aperture = - (volatile u32 __iomem *) ioremap(apbase, 33 * PAGE_SIZE); + (volatile u32 __iomem *) ioremap(apbase_phys, 33 * PAGE_SIZE); if (!nvidia_private.aperture) return -ENOMEM; -- 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/