Module Name: src
Committed By: uwe
Date: Thu Jul 30 03:57:52 UTC 2020
Added Files:
src/sys/arch/sh3/sh3: pmb.c
Log Message:
Code to dump PMB contents.
To generate a diff of this commit:
cvs rdiff -u -r0 -r1.1 src/sys/arch/sh3/sh3/pmb.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Added files:
Index: src/sys/arch/sh3/sh3/pmb.c
diff -u /dev/null src/sys/arch/sh3/sh3/pmb.c:1.1
--- /dev/null Thu Jul 30 03:57:52 2020
+++ src/sys/arch/sh3/sh3/pmb.c Thu Jul 30 03:57:52 2020
@@ -0,0 +1,140 @@
+/* $NetBSD: pmb.c,v 1.1 2020/07/30 03:57:52 uwe Exp $ */
+/*
+ * Copyright (c) 2020 Valery Ushakov
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: pmb.c,v 1.1 2020/07/30 03:57:52 uwe Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+
+#include <sh3/devreg.h>
+#include <sh3/mmu_sh4.h>
+#include <sh3/pmb.h>
+
+
+void
+st40_pmb_init(int product)
+{
+ int se_mode;
+ bool have_ub;
+ uint8_t ub;
+ char bits[64];
+
+ switch (product) {
+
+ /* ST40-300 */
+ case CPU_PRODUCT_STX7105: {
+ uint32_t pascr = _reg_read_4(ST40_PASCR);
+ snprintb(bits, sizeof(bits), ST40_PASCR_BITS, pascr);
+ printf("PMB: PASCR=%s\n", bits);
+
+ se_mode = (pascr & ST40_PASCR_SE);
+ have_ub = true;
+ ub = (uint8_t)(pascr & ST40_PASCR_UB_MASK);
+ break;
+ }
+
+#if 0
+ /* ST40-200, ST40-500 */
+ case 0xdeadbabe: {
+ uint32_t mmucr = _reg_read_4(SH4_MMUCR);
+
+ se_mode = (mmucr & ST40_MMUCR_SE);
+ have_ub = false;
+ ub = 0;
+ break;
+ }
+#endif
+
+ /* No PMB */
+ default:
+ return;
+ }
+
+ if (!se_mode) {
+ printf("PMB: 29-bit mode\n");
+ if (have_ub) {
+ for (int area = 0; area < 8; ++area) {
+ bool unbuffered = !!(ub & (1u << area));
+ printf("PMB: area%d %s\n", area,
+ unbuffered ? "UNBUFFERED" : "buffered");
+ }
+ }
+ return;
+ }
+
+ printf("PMB: 32-bit mode\n");
+ for (unsigned int i = 0; i < ST40_PMB_ENTRY; ++i) {
+ uint32_t offset = (i << ST40_PMB_E_SHIFT);
+
+ uint32_t addr = _reg_read_4(ST40_PMB_AA + offset);
+#if 0
+ snprintb(bits, sizeof(bits), ST40_PMB_AA_BITS, addr);
+ printf("PMB[%02d] A=%s", i, bits);
+#endif
+ uint32_t data = _reg_read_4(ST40_PMB_DA + offset);
+#if 0
+ snprintb(bits, sizeof(bits), ST40_PMB_DA_BITS, data);
+ printf(" D=%s\n", bits);
+#endif
+ if ((addr & ST40_PMB_AA_V) == 0)
+ continue;
+
+ uint32_t vpn = addr & ST40_PMB_AA_VPN_MASK;
+ uint32_t ppn = data & ST40_PMB_DA_PPN_MASK;
+ uint32_t szbits = data & ST40_PMB_DA_SZ_MASK;
+
+ vpn >>= ST40_PMB_AA_VPN_SHIFT;
+ ppn >>= ST40_PMB_DA_PPN_SHIFT;
+
+ unsigned int sz = 0;
+ switch (szbits) {
+ case ST40_PMB_DA_SZ_16M:
+ sz = 1;
+ break;
+ case ST40_PMB_DA_SZ_64M:
+ sz = 4;
+ break;
+ case ST40_PMB_DA_SZ_128M:
+ sz = 8;
+ break;
+ case ST40_PMB_DA_SZ_512M:
+ sz = 32;
+ break;
+ }
+
+ printf("PMB[%02d] = %02x..%02x -> %02x..%02x"
+ " %3uM %s %s %s\n",
+ i,
+ vpn, vpn + sz - 1,
+ ppn, ppn + sz - 1,
+ sz << 4,
+ data & ST40_PMB_DA_UB ? "UB" : "--",
+ data & ST40_PMB_DA_C ? "C" : "-",
+ data & ST40_PMB_DA_WT ? "WT" : "CB");
+ }
+}
