openwrtv3/target/linux/layerscape/patches-4.4/7024-Add-APIs-to-setup-HugeTLB-mappings-for-USDPAA.patch

From 2dcd28f7b4f5b92686da45f4ec46802026fb8573 Mon Sep 17 00:00:00 2001
From: Roy Pledge <Roy.Pledge@freescale.com>
Date: Mon, 11 Jul 2016 14:34:59 +0800
Subject: [PATCH 24/70] Add APIs to setup HugeTLB mappings for USDPAA

commit 189653d40d5dc41b8bd4cfb61f766bd8a89b1e34
[context adjustment]

Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
---
 arch/powerpc/mm/fsl_booke_mmu.c |   14 +++++++++++++-
 arch/powerpc/mm/mmu_decl.h      |    6 ++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

--- a/arch/powerpc/mm/fsl_booke_mmu.c
+++ b/arch/powerpc/mm/fsl_booke_mmu.c
@@ -105,7 +105,7 @@ unsigned long p_mapped_by_tlbcam(phys_ad
  * an unsigned long (for example, 32-bit implementations cannot support a 4GB
  * size).
  */
-static void settlbcam(int index, unsigned long virt, phys_addr_t phys,
+void settlbcam(int index, unsigned long virt, phys_addr_t phys,
 		unsigned long size, unsigned long flags, unsigned int pid)
 {
 	unsigned int tsize;
@@ -143,6 +143,18 @@ static void settlbcam(int index, unsigne
 	tlbcam_addrs[index].phys = phys;
 }
 
+void cleartlbcam(unsigned long virt, unsigned int pid)
+{
+        int i = 0;
+        for (i = 0; i < NUM_TLBCAMS; i++) {
+                if (tlbcam_addrs[i].start == virt) {
+                        TLBCAM[i].MAS1 = 0;
+                        loadcam_entry(i);
+                        return;
+                }
+        }
+}
+
 unsigned long calc_cam_sz(unsigned long ram, unsigned long virt,
 			  phys_addr_t phys)
 {
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -91,6 +91,12 @@ extern void _tlbia(void);
 
 #endif /* CONFIG_PPC_MMU_NOHASH */
 
+void settlbcam(int index, unsigned long virt, phys_addr_t phys,
+               unsigned long size, unsigned long flags, unsigned int pid);
+
+void cleartlbcam(unsigned long virt, unsigned int pid);
+
+
 #ifdef CONFIG_PPC32
 
 extern void mapin_ram(void);