ENGR00243106 imx: pcie: enable pcie msi on imx6 platforms

deprieved from boundary msi support patch
add the following modifications
 * use the RC's line address 0x01FF8000 instead of one
 actual physical memory as the msi start address.
 The physical memory address is not mandatory required by the
 msi start address.

 * set PCI_MSI_FLAGS_ENABLE in RC's msi capability
 structure when the msi int is enabled.

 * the data of msg is only 16bit, set the upper 8bit
 cputype, and the msi int num to the lower 8bit.

Signed-off-by: Richard Zhu <r65037@freescale.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/arch/arm/mach-mx6/msi.h b/arch/arm/mach-mx6/msi.h
new file mode 100644
index 000000000000..ce0e46731fde
--- /dev/null
+++ b/arch/arm/mach-mx6/msi.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2013 Boundary Devices, Inc. All Rights Reserved.
+ * Copyright (C) 2013 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+extern void imx_pcie_enable_irq(unsigned pos, int set);
+void imx_pcie_mask_irq(unsigned pos, int set);
+unsigned imx_pcie_msi_pending(unsigned index);
+
+#define MSI_MATCH_ADDR  0x01FF8000
+
+void imx_msi_init(void);