Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754873Ab3J2Lfg (ORCPT ); Tue, 29 Oct 2013 07:35:36 -0400 Received: from mail-db8lp0187.outbound.messaging.microsoft.com ([213.199.154.187]:16023 "EHLO db8outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752167Ab3J2Lef (ORCPT ); Tue, 29 Oct 2013 07:34:35 -0400 X-Forefront-Antispam-Report: CIP:70.37.183.190;KIP:(null);UIP:(null);IPV:NLI;H:mail.freescale.net;RD:none;EFVD:NLI X-SpamScore: 4 X-BigFish: VS4(zzzz1f42h208ch1ee6h1de0h1fdah2073h1202h1e76h1d1ah1d2ah1fc6h1082kzd2iz1de098h8275bh1de097hz2dh2a8h839he5bhf0ah107ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1b2fh1fb3h1d0ch1d2eh1d3fh1dfeh1dffh1e1dh1e23h1fe8h1ff5h2218h2216h1155h) From: Bharat Bhushan To: , , , , , , , , CC: Bharat Bhushan , Bharat Bhushan Subject: [PATCH 2/5 RFC] powerpc: pci: Add arch specific msi region interface Date: Tue, 29 Oct 2013 16:57:40 +0530 Message-ID: <1383046062-16520-4-git-send-email-Bharat.Bhushan@freescale.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1383046062-16520-1-git-send-email-Bharat.Bhushan@freescale.com> References: <1383046062-16520-1-git-send-email-Bharat.Bhushan@freescale.com> MIME-Version: 1.0 Content-Type: text/plain X-OriginatorOrg: freescale.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2195 Lines: 73 This patch adds the interface to get the msi region information from arch specific code. The machine spicific code is not yet defined. Signed-off-by: Bharat Bhushan --- arch/powerpc/include/asm/machdep.h | 8 ++++++++ arch/powerpc/kernel/msi.c | 18 ++++++++++++++++++ 2 files changed, 26 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h index 8b48090..8d1b787 100644 --- a/arch/powerpc/include/asm/machdep.h +++ b/arch/powerpc/include/asm/machdep.h @@ -30,6 +30,7 @@ struct file; struct pci_controller; struct kimage; struct pci_host_bridge; +struct msi_region; struct machdep_calls { char *name; @@ -124,6 +125,13 @@ struct machdep_calls { int (*setup_msi_irqs)(struct pci_dev *dev, int nvec, int type); void (*teardown_msi_irqs)(struct pci_dev *dev); + + /* Returns the number of MSI regions (banks) */ + int (*msi_get_region_count)(void); + + /* Returns the requested region's address and size */ + int (*msi_get_region)(int region_num, + struct msi_region *region); #endif void (*restart)(char *cmd); diff --git a/arch/powerpc/kernel/msi.c b/arch/powerpc/kernel/msi.c index 8bbc12d..1a67787 100644 --- a/arch/powerpc/kernel/msi.c +++ b/arch/powerpc/kernel/msi.c @@ -13,6 +13,24 @@ #include +int arch_msi_get_region_count(void) +{ + if (ppc_md.msi_get_region_count) { + pr_debug("msi: Using platform get_region_count routine.\n"); + return ppc_md.msi_get_region_count(); + } + return 0; +} + +int arch_msi_get_region(int region_num, struct msi_region *region) +{ + if (ppc_md.msi_get_region) { + pr_debug("msi: Using platform get_region routine.\n"); + return ppc_md.msi_get_region(region_num, region); + } + return 0; +} + int arch_msi_check_device(struct pci_dev* dev, int nvec, int type) { if (!ppc_md.setup_msi_irqs || !ppc_md.teardown_msi_irqs) { -- 1.7.0.4 -- 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/