make ls7a dma keep order.

Change-Id: Ic2acc1e6a350943145ac58d1ce9ea43ca421a789 Signed-off-by: Chong Qiao <qiaochong@loongson.cn>
4 years ago · b0af0089c4
2 changed files with 6 additions and 0 deletions
--- a/pmon/arch/mips/ls7a/ls7a_define.h
+++ b/pmon/arch/mips/ls7a/ls7a_define.h
@ -43,6 +43,7 @@
 #define TEMP_GMEM_ADDR  0x40000000
 #define LS7A_GMEM_TEMP_ADDR (HT1_MEM_BASE_ADDR | TEMP_GMEM_ADDR)
 //confbus address
+#define CONF_HT_DMA_ORDER	0x414
 #define CONF_HT_CLKEN_OFFSET    0x418
 #define CONF_HT_ROUTE_OFFSET    0x41c
 #define CONF_NB_OFFSET      0x420
--- a/pmon/arch/mips/ls7a/ls7a_init.S
+++ b/pmon/arch/mips/ls7a/ls7a_init.S
@ -5,6 +5,11 @@
 // DO NOT touch this file!

    dli     t0, LS7A_CONFBUS_BASE_ADDR
+    /*0x414: bit 0-18, clear to make each device dma keep order*/
+    lw	    t1, CONF_HT_DMA_ORDER(t0)
+    li	    t2, ~0x7ffff
+    and     t1, t2
+    sw	    t1, CONF_HT_DMA_ORDER(t0)

    lw      t1, CONF_HT_ROUTE_OFFSET(t0)
    li      t2, (0xf | (0xf << 16))