Configure CPU window to second CESA SRAM

Check if there is a second CESA SRAM node in FDT and add a CPU window
for it. Define A38X specific macro for setting device attribute for
each node.

Submitted by:	Michal Stanek <mst@semihalf.com>
Obtained from:	Semihalf
Sponsored by:	Stormshield
Differential revision:	https://reviews.freebsd.org/D6216

2 files changed, 44 insertions, 0 deletions

diff --git a/sys/arm/mv/mv_common.c b/sys/arm/mv/mv_common.c
index 55e3cd1..e24612c 100644
--- a/sys/arm/mv/mv_common.c
+++ b/sys/arm/mv/mv_common.c
@@ -2107,6 +2107,37 @@ moveon:
 		return (EINVAL);
 
 	cpu_win_tbl[t].target = MV_WIN_CESA_TARGET;
+#ifdef SOC_MV_ARMADA38X
+	cpu_win_tbl[t].attr = MV_WIN_CESA_ATTR(0);
+#else
+	cpu_win_tbl[t].attr = MV_WIN_CESA_ATTR(1);
+#endif
+	cpu_win_tbl[t].base = sram_base;
+	cpu_win_tbl[t].size = sram_size;
+	cpu_win_tbl[t].remap = ~0;
+	cpu_wins_no++;
+	debugf("sram: base = 0x%0lx size = 0x%0lx\n", sram_base, sram_size);
+
+	/* Check if there is a second CESA node */
+	while ((node = OF_peer(node)) != 0) {
+		if (fdt_is_compatible(node, "mrvl,cesa-sram")) {
+			if (fdt_regsize(node, &sram_base, &sram_size) != 0)
+				return (EINVAL);
+			break;
+		}
+	}
+
+	if (node == 0)
+		return (0);
+
+	t++;
+	if (t >= ((sizeof(cpu_win_tbl))/(sizeof(cpu_win_tbl[0])))) {
+		debugf("cannot fit CESA tuple into cpu_win_tbl\n");
+		return (ENOMEM);
+	}
+
+	/* Configure window for CESA1 */
+	cpu_win_tbl[t].target = MV_WIN_CESA_TARGET;
 	cpu_win_tbl[t].attr = MV_WIN_CESA_ATTR(1);
 	cpu_win_tbl[t].base = sram_base;
 	cpu_win_tbl[t].size = sram_size;
diff --git a/sys/arm/mv/mvwin.h b/sys/arm/mv/mvwin.h
index a9c2b8c..7e773a9 100644
--- a/sys/arm/mv/mvwin.h
+++ b/sys/arm/mv/mvwin.h
@@ -233,6 +233,19 @@
  *  2: engine0
  */
 #define MV_WIN_CESA_ATTR(eng_sel)	(1 | ((eng_sel) << 2))
+#elif defined(SOC_MV_ARMADA38X)
+#define MV_WIN_CESA_TARGET		9
+/*
+ * Bits [1:0] = Data swapping
+ *  0x0 = Byte swap
+ *  0x1 = No swap
+ *  0x2 = Byte and word swap
+ *  0x3 = Word swap
+ * Bits [4:2] = CESA select:
+ *  0x6 = CESA0
+ *  0x5 = CESA1
+ */
+#define MV_WIN_CESA_ATTR(eng_sel)	(0x11 | (1 << (3 - (eng_sel))))
 #else
 #define MV_WIN_CESA_TARGET		3
 #define MV_WIN_CESA_ATTR(eng_sel)	0