linux-kernel - [PATCH] MIPS: Octeon: Add PCIe2 support in arch_setup_msi

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Date:	Fri, 11 Apr 2014 08:32:55 +0000 (GMT)
From:	Eunbong Song <eunb.song@...sung.com>
To:	ralf@...ux-mips.org
Cc:	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org
Subject: [PATCH] MIPS: Octeon: Add PCIe2 support in arch_setup_msi_irq()


In arch_setup_msi_irq(), there is no case for PCIe2. So board which have PCIe2 functionality
fails to boot with "Kernel panic - not syncing: arch_setup_msi_irq: Invalid octeon_dma_bar_type"
message. This patch solve this problem.

Signed-off-by: Eunbong Song <eunb.song@...sung.com>
---
 arch/mips/pci/msi-octeon.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/arch/mips/pci/msi-octeon.c b/arch/mips/pci/msi-octeon.c
index 2b91b0e..ab0c5d1 100644
--- a/arch/mips/pci/msi-octeon.c
+++ b/arch/mips/pci/msi-octeon.c
@@ -15,6 +15,7 @@
 #include <asm/octeon/cvmx-npi-defs.h>
 #include <asm/octeon/cvmx-pci-defs.h>
 #include <asm/octeon/cvmx-npei-defs.h>
+#include <asm/octeon/cvmx-sli-defs.h>
 #include <asm/octeon/cvmx-pexp-defs.h>
 #include <asm/octeon/pci-octeon.h>
 
@@ -162,6 +163,11 @@ msi_irq_allocated:
 		msg.address_lo = (0 + CVMX_NPEI_PCIE_MSI_RCV) & 0xffffffff;
 		msg.address_hi = (0 + CVMX_NPEI_PCIE_MSI_RCV) >> 32;
 		break;
+	case OCTEON_DMA_BAR_TYPE_PCIE2:
+		/* When using PCIe2, Bar 0 is based at 0 */
+		msg.address_lo = (0 + CVMX_SLI_PCIE_MSI_RCV) & 0xffffffff;
+		msg.address_hi = (0 + CVMX_SLI_PCIE_MSI_RCV) >> 32;
+		break;
 	default:
 		panic("arch_setup_msi_irq: Invalid octeon_dma_bar_type");
 	}
-- 
1.7.0.1