This is an automated email from Gerrit. Hsiangkai Wang ([email protected]) just uploaded a new patch set to Gerrit, which you can find at http://openocd.zylin.com/1580
-- gerrit commit eef51eba4f87b1a7f7ccdfb764a3e752d583ae2c Author: Hsiangkai Wang <[email protected]> Date: Thu Jul 11 10:08:15 2013 +0800 nds32: Use DMA to access memory as no DCache As GDB uses file-I/O protocol to access memory, use DMA to access if no DCache. This commit improves the performance of Andes Virtual Hosting. Change-Id: I36bb2154b9f497fc4237625836cf8c7115330a60 Signed-off-by: Hsiangkai Wang <[email protected]> diff --git a/src/target/nds32_v3_common.c b/src/target/nds32_v3_common.c index e88430f..e01025f 100644 --- a/src/target/nds32_v3_common.c +++ b/src/target/nds32_v3_common.c @@ -555,19 +555,25 @@ int nds32_v3_write_buffer(struct target *target, uint32_t address, return ERROR_FAIL; if (nds32->hit_syscall) { - /* Use bus mode to access memory during virtual hosting */ struct aice_port_s *aice = target_to_aice(target); enum nds_memory_access origin_access_channel; - int result; - origin_access_channel = memory->access_channel; - memory->access_channel = NDS_MEMORY_ACC_BUS; - aice_memory_access(aice, NDS_MEMORY_ACC_BUS); + /* If target has no cache, use BUS mode to access memory. */ + if ((memory->dcache.line_size == 0) + || (memory->dcache.enable == false)) { + /* There is no Dcache or Dcache is disabled. */ + memory->access_channel = NDS_MEMORY_ACC_BUS; + aice_memory_access(aice, NDS_MEMORY_ACC_BUS); + } + + int result; result = nds32_gdb_fileio_write_memory(nds32, address, size, buffer); - memory->access_channel = origin_access_channel; - aice_memory_access(aice, origin_access_channel); + if (NDS_MEMORY_ACC_CPU == origin_access_channel) { + memory->access_channel = NDS_MEMORY_ACC_CPU; + aice_memory_access(aice, NDS_MEMORY_ACC_CPU); + } return result; } -- ------------------------------------------------------------------------------ Introducing Performance Central, a new site from SourceForge and AppDynamics. Performance Central is your source for news, insights, analysis and resources for efficient Application Performance Management. Visit us today! http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk _______________________________________________ OpenOCD-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/openocd-devel
