From: Bharat Bhushan <r65777@freescale.com>
To: <alex.williamson@redhat.com>, <joro@8bytes.org>,
<bhelgaas@google.com>, <agraf@suse.de>, <scottwood@freescale.com>,
<stuart.yoder@freescale.com>, <iommu@lists.linux-foundation.org>,
<linux-pci@vger.kernel.org>, <linuxppc-dev@lists.ozlabs.org>,
<linux-kernel@vger.kernel.org>
Cc: Bharat Bhushan <bharat.bhushan@freescale.com>
Subject: [PATCH 3/9 v2] powerpc: pci: Add arch specific msi region interface
Date: Tue, 19 Nov 2013 10:47:07 +0530 [thread overview]
Message-ID: <1384838233-24847-4-git-send-email-Bharat.Bhushan@freescale.com> (raw)
In-Reply-To: <1384838233-24847-1-git-send-email-Bharat.Bhushan@freescale.com>
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 <bharat.bhushan@freescale.com>
---
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 <asm/machdep.h>
+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
next prev parent reply other threads:[~2013-11-19 5:23 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-19 5:17 [PATCH 0/9 v2] vfio-pci: add support for Freescale IOMMU (PAMU) Bharat Bhushan
2013-11-19 5:17 ` [PATCH 1/9 v2] pci:msi: add weak function for returning msi region info Bharat Bhushan
2013-11-25 23:36 ` Bjorn Helgaas
2013-11-28 10:08 ` Bharat Bhushan
2013-11-19 5:17 ` [PATCH 2/9 v2] pci: msi: expose msi region information functions Bharat Bhushan
2013-11-19 5:17 ` Bharat Bhushan [this message]
2013-11-19 5:17 ` [PATCH 4/9 v2] powerpc: msi: Extend the msi region interface to get info from fsl_msi Bharat Bhushan
2013-11-19 5:17 ` [PATCH 5/9 v2] pci/msi: interface to set an iova for a msi region Bharat Bhushan
2013-11-19 5:17 ` [PATCH 6/9 v2] powerpc: pci: Extend msi iova page setup to arch specific Bharat Bhushan
2013-11-19 5:17 ` [PATCH 7/9 v2] pci: msi: Extend msi iova setting interface to powerpc arch Bharat Bhushan
2013-11-19 5:17 ` [PATCH 8/9 v2] vfio: moving some functions in common file Bharat Bhushan
2013-11-19 5:17 ` [PATCH 9/9 v2] vfio pci: Add vfio iommu implementation for FSL_PAMU Bharat Bhushan
2013-11-20 18:47 ` [PATCH 0/9 v2] vfio-pci: add support for Freescale IOMMU (PAMU) Alex Williamson
2013-11-21 11:20 ` Varun Sethi
2013-11-21 11:20 ` Bharat Bhushan
2013-11-21 20:43 ` Alex Williamson
2013-11-21 20:47 ` Scott Wood
2013-11-21 21:00 ` Alex Williamson
2013-11-25 5:33 ` Bharat Bhushan
2013-11-25 16:38 ` Alex Williamson
2013-11-27 16:08 ` Bharat Bhushan
2013-11-28 9:19 ` Bharat Bhushan
2013-12-06 0:21 ` Scott Wood
2013-12-06 4:11 ` Bharat Bhushan
2013-12-06 18:59 ` Scott Wood
2013-12-06 19:30 ` Alex Williamson
2013-12-07 0:22 ` Scott Wood
2013-12-10 5:37 ` Bharat.Bhushan
2013-12-10 5:53 ` Alex Williamson
2013-12-10 9:09 ` Bharat.Bhushan
2013-12-06 0:00 ` Scott Wood
2013-12-06 4:17 ` Bharat Bhushan
2013-12-06 19:25 ` Scott Wood
2013-12-10 5:37 ` Bharat.Bhushan
2013-12-10 20:29 ` Scott Wood
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