[PATCH 3/9 v2] powerpc: pci: Add arch specific msi region interface

[Bharat Bhushan]

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


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[PATCH 3/9 v2] powerpc: pci: Add arch specific msi region interface

[Bharat Bhushan]

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.bhus...@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


--
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Please read the FAQ at  http://www.tux.org/lkml/