diff mbox

[dpdk-dev,v2,12/12] Add eal memory support for IBM Power Architecture

Message ID 1416199705-24150-13-git-send-email-chaozhu@linux.vnet.ibm.com (mailing list archive)
State Superseded, archived
Headers show

Commit Message

Chao Zhu Nov. 17, 2014, 4:48 a.m. UTC
IBM Power architecture has different memory architecture with x86. When
the physical memory address is in ascending order, the mmaped virtual
address is in descending order. This patch modified the memory segment
detection code to make it work for Power. This patch also added a
commond ARCH_PPC_64 defination for 64 bit systems.

Signed-off-by: Chao Zhu <chaozhu@linux.vnet.ibm.com>
---
 config/defconfig_ppc_64-power8-linuxapp-gcc   |    1 +
 config/defconfig_x86_64-native-linuxapp-clang |    1 +
 config/defconfig_x86_64-native-linuxapp-gcc   |    1 +
 config/defconfig_x86_64-native-linuxapp-icc   |    1 +
 lib/librte_eal/linuxapp/eal/eal_memory.c      |   27 +++++++++++++++++++-----
 5 files changed, 25 insertions(+), 6 deletions(-)
diff mbox

Patch

diff --git a/config/defconfig_ppc_64-power8-linuxapp-gcc b/config/defconfig_ppc_64-power8-linuxapp-gcc
index b10f60c..23a5591 100644
--- a/config/defconfig_ppc_64-power8-linuxapp-gcc
+++ b/config/defconfig_ppc_64-power8-linuxapp-gcc
@@ -35,6 +35,7 @@  CONFIG_RTE_MACHINE="power8"
 CONFIG_RTE_ARCH="ppc_64"
 CONFIG_RTE_ARCH_PPC_64=y
 CONFIG_RTE_ARCH_BIG_ENDIAN=y
+CONFIG_RTE_ARCH_64=y
 
 CONFIG_RTE_TOOLCHAIN="gcc"
 CONFIG_RTE_TOOLCHAIN_GCC=y
diff --git a/config/defconfig_x86_64-native-linuxapp-clang b/config/defconfig_x86_64-native-linuxapp-clang
index bbda080..5f3074e 100644
--- a/config/defconfig_x86_64-native-linuxapp-clang
+++ b/config/defconfig_x86_64-native-linuxapp-clang
@@ -36,6 +36,7 @@  CONFIG_RTE_MACHINE="native"
 
 CONFIG_RTE_ARCH="x86_64"
 CONFIG_RTE_ARCH_X86_64=y
+CONFIG_RTE_ARCH_64=y
 
 CONFIG_RTE_TOOLCHAIN="clang"
 CONFIG_RTE_TOOLCHAIN_CLANG=y
diff --git a/config/defconfig_x86_64-native-linuxapp-gcc b/config/defconfig_x86_64-native-linuxapp-gcc
index 3de818a..60baf5b 100644
--- a/config/defconfig_x86_64-native-linuxapp-gcc
+++ b/config/defconfig_x86_64-native-linuxapp-gcc
@@ -36,6 +36,7 @@  CONFIG_RTE_MACHINE="native"
 
 CONFIG_RTE_ARCH="x86_64"
 CONFIG_RTE_ARCH_X86_64=y
+CONFIG_RTE_ARCH_64=y
 
 CONFIG_RTE_TOOLCHAIN="gcc"
 CONFIG_RTE_TOOLCHAIN_GCC=y
diff --git a/config/defconfig_x86_64-native-linuxapp-icc b/config/defconfig_x86_64-native-linuxapp-icc
index 795333b..71d1e28 100644
--- a/config/defconfig_x86_64-native-linuxapp-icc
+++ b/config/defconfig_x86_64-native-linuxapp-icc
@@ -36,6 +36,7 @@  CONFIG_RTE_MACHINE="native"
 
 CONFIG_RTE_ARCH="x86_64"
 CONFIG_RTE_ARCH_X86_64=y
+CONFIG_RTE_ARCH_64=y
 
 CONFIG_RTE_TOOLCHAIN="icc"
 CONFIG_RTE_TOOLCHAIN_ICC=y
diff --git a/lib/librte_eal/linuxapp/eal/eal_memory.c b/lib/librte_eal/linuxapp/eal/eal_memory.c
index f2454f4..b9c6d2e 100644
--- a/lib/librte_eal/linuxapp/eal/eal_memory.c
+++ b/lib/librte_eal/linuxapp/eal/eal_memory.c
@@ -316,11 +316,11 @@  map_all_hugepages(struct hugepage_file *hugepg_tbl,
 #endif
 			hugepg_tbl[i].filepath[sizeof(hugepg_tbl[i].filepath) - 1] = '\0';
 		}
-#ifndef RTE_ARCH_X86_64
-		/* for 32-bit systems, don't remap 1G pages, just reuse original
+#ifndef RTE_ARCH_64
+		/* for 32-bit systems, don't remap 1G and 16G pages, just reuse original
 		 * map address as final map address.
 		 */
-		else if (hugepage_sz == RTE_PGSIZE_1G){
+		else if ((hugepage_sz == RTE_PGSIZE_1G) || (hugepage_sz == RTE_PGSIZE_16G)){
 			hugepg_tbl[i].final_va = hugepg_tbl[i].orig_va;
 			hugepg_tbl[i].orig_va = NULL;
 			continue;
@@ -412,11 +412,11 @@  remap_all_hugepages(struct hugepage_file *hugepg_tbl, struct hugepage_info *hpi)
 
 	while (i < hpi->num_pages[0]) {
 
-#ifndef RTE_ARCH_X86_64
-		/* for 32-bit systems, don't remap 1G pages, just reuse original
+#ifndef RTE_ARCH_64
+		/* for 32-bit systems, don't remap 1G pages and 16G pages, just reuse original
 		 * map address as final map address.
 		 */
-		if (hugepage_sz == RTE_PGSIZE_1G){
+		if ((hugepage_sz == RTE_PGSIZE_1G) || (hugepage_sz == RTE_PGSIZE_16G)){
 			hugepg_tbl[i].final_va = hugepg_tbl[i].orig_va;
 			hugepg_tbl[i].orig_va = NULL;
 			i++;
@@ -1263,9 +1263,18 @@  rte_eal_hugepage_init(void)
 		else if ((hugepage[i].physaddr - hugepage[i-1].physaddr) !=
 		    hugepage[i].size)
 			new_memseg = 1;
+#ifdef RTE_ARCH_PPC_64
+		/* IBM Power architecture has different memory layout than x86.
+		* If the physical address is lower address first, the mmaped virtual
+		* address will be higher address first */
+		else if (((unsigned long)hugepage[i-1].final_va -
+		    (unsigned long)hugepage[i].final_va) != hugepage[i].size)
+			new_memseg = 1;
+#else
 		else if (((unsigned long)hugepage[i].final_va -
 		    (unsigned long)hugepage[i-1].final_va) != hugepage[i].size)
 			new_memseg = 1;
+#endif
 
 		if (new_memseg) {
 			j += 1;
@@ -1284,6 +1293,12 @@  rte_eal_hugepage_init(void)
 		}
 		/* continuation of previous memseg */
 		else {
+#ifdef RTE_ARCH_PPC_64
+		/* Use the phy and virt address of the last page as segment address  
+		  * for IBM Power architecture */
+			mcfg->memseg[j].phys_addr = hugepage[i].physaddr;
+			mcfg->memseg[j].addr = hugepage[i].final_va;
+#endif
 			mcfg->memseg[j].len += mcfg->memseg[j].hugepage_sz;
 		}
 		hugepage[i].memseg_id = j;