From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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) 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> 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 Content-Type: text/plain Cc: Bharat Bhushan List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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) { -- 1.7.0.4