From patchwork Tue Nov 19 05:17:07 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bharat Bhushan X-Patchwork-Id: 292270 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from ozlabs.org (localhost [IPv6:::1]) by ozlabs.org (Postfix) with ESMTP id 35B162C048C for ; Tue, 19 Nov 2013 16:25:45 +1100 (EST) Received: from am1outboundpool.messaging.microsoft.com (am1ehsobe002.messaging.microsoft.com [213.199.154.205]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (Client CN "mail.global.frontbridge.com", Issuer "MSIT Machine Auth CA 2" (not verified)) by ozlabs.org (Postfix) with ESMTPS id 1D6352C042D for ; Tue, 19 Nov 2013 16:23:48 +1100 (EST) Received: from mail24-am1-R.bigfish.com (10.3.201.228) by AM1EHSOBE005.bigfish.com (10.3.204.25) with Microsoft SMTP Server id 14.1.225.22; Tue, 19 Nov 2013 05:23:42 +0000 Received: from mail24-am1 (localhost [127.0.0.1]) by mail24-am1-R.bigfish.com (Postfix) with ESMTP id 1E112100135; Tue, 19 Nov 2013 05:23:42 +0000 (UTC) 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: 8 X-BigFish: VS8(zzzz1f42h2148h208ch1ee6h1de0h1fdah2073h2146h1202h1e76h1d1ah1d2ah1fc6h1082kz70kd2iz1de098h8275bh1de097hz2dh2a8h839he5bhf0ah107ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1b2fh2222h224fh1fb3h1d0ch1d2eh1d3fh1dfeh1dffh1e1dh1e23h1fe8h1ff5h2218h2216h20cfi1155h) Received: from mail24-am1 (localhost.localdomain [127.0.0.1]) by mail24-am1 (MessageSwitch) id 1384838619385563_29689; Tue, 19 Nov 2013 05:23:39 +0000 (UTC) Received: from AM1EHSMHS015.bigfish.com (unknown [10.3.201.238]) by mail24-am1.bigfish.com (Postfix) with ESMTP id 4E6713A004F; Tue, 19 Nov 2013 05:23:39 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by AM1EHSMHS015.bigfish.com (10.3.207.153) with Microsoft SMTP Server (TLS) id 14.16.227.3; Tue, 19 Nov 2013 05:23:36 +0000 Received: from az84smr01.freescale.net (10.64.34.197) by 039-SN1MMR1-002.039d.mgd.msft.net (10.84.1.15) with Microsoft SMTP Server (TLS) id 14.3.158.2; Tue, 19 Nov 2013 05:23:34 +0000 Received: from freescale.com ([10.232.15.72]) by az84smr01.freescale.net (8.14.3/8.14.0) with SMTP id rAJ5NSNU006008; Mon, 18 Nov 2013 22:23:29 -0700 Received: by freescale.com (sSMTP sendmail emulation); Tue, 19 Nov 2013 10:47:39 +0530 From: Bharat Bhushan To: , , , , , , , , , Subject: [PATCH 3/9 v2] powerpc: pci: Add arch specific msi region interface Date: Tue, 19 Nov 2013 10:47:07 +0530 Message-ID: <1384838233-24847-4-git-send-email-Bharat.Bhushan@freescale.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1384838233-24847-1-git-send-email-Bharat.Bhushan@freescale.com> References: <1384838233-24847-1-git-send-email-Bharat.Bhushan@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% X-FOPE-CONNECTOR: Id%0$Dn%FREESCALE.MAIL.ONMICROSOFT.COM$RO%1$TLS%0$FQDN%$TlsDn% Cc: Bharat Bhushan X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.16rc2 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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 --- v1->v2 - None 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) {