Signed-off-by: Ben Widawsky b...@bwidawsk.net
---
tests/dpf_test |8 +++
tools/Makefile.am |3 +-
tools/intel_l3_parity.c | 159 +++
3 files changed, 169 insertions(+), 1 deletion(-)
create mode 100755 tests/dpf_test
create mode 100644 tools/intel_l3_parity.c
diff --git a/tests/dpf_test b/tests/dpf_test
new file mode 100755
index 000..7d431ac
--- /dev/null
+++ b/tests/dpf_test
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+SOURCE_DIR=$( dirname ${BASH_SOURCE[0]} )
+. $SOURCE_DIR/drm_lib.sh
+
+$SOURCE_DIR/../tools/intel_l3_parity -c 21
+$SOURCE_DIR/../tools/intel_l3_parity 0,0,0 21
+$SOURCE_DIR/../tools/intel_l3_parity 21
diff --git a/tools/Makefile.am b/tools/Makefile.am
index 2e4128b..d461f38 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -14,7 +14,8 @@ bin_PROGRAMS =\
intel_reg_snapshot \
intel_reg_write \
intel_reg_read \
- intel_forcewaked
+ intel_forcewaked\
+ intel_l3_parity
noinst_PROGRAMS = \
intel_dump_decode \
diff --git a/tools/intel_l3_parity.c b/tools/intel_l3_parity.c
new file mode 100644
index 000..260c3d0
--- /dev/null
+++ b/tools/intel_l3_parity.c
@@ -0,0 +1,159 @@
+/*
+ * Copyright © 2012 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the Software),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ *
+ * Authors:
+ *Ben Widawsky b...@bwidawsk.net
+ *
+ */
+
+#define _GNU_SOURCE
+#include sys/types.h
+#include sys/stat.h
+#include fcntl.h
+#include stdio.h
+#include stdlib.h
+#include string.h
+#include unistd.h
+#include intel_chipset.h
+#include intel_gpu_tools.h
+#include drmtest.h
+
+#define NUM_BANKS 4
+#define NUM_SUBBANKS 8
+#define NUM_REGS (NUM_BANKS * NUM_SUBBANKS)
+
+struct __attribute__ ((__packed__)) l3_log_register {
+ uint32_t row0_enable: 1;
+ uint32_t rsvd2 : 4;
+ uint32_t row0 : 11;
+ uint32_t row1_enable: 1;
+ uint32_t rsvd1 : 4;
+ uint32_t row1 : 11;
+} l3log[NUM_BANKS][NUM_SUBBANKS];
+
+static void dumpit(void)
+{
+ int i, j;
+
+ for (i = 0; i NUM_BANKS; i++) {
+ for (j = 0; j NUM_SUBBANKS; j++) {
+ struct l3_log_register *reg = l3log[i][j];
+
+ if (reg-row0_enable)
+ printf(Row %d, Bank %d, Subbank %d is disabled\n,
+ reg-row0, i, j);
+ if (reg-row1_enable)
+ printf(Row %d, Bank %d, Subbank %d is disabled\n,
+ reg-row1, i, j);
+ }
+ }
+}
+
+static int disable_rbs(int row, int bank, int sbank)
+{
+ struct l3_log_register *reg = l3log[bank][sbank];
+
+ // can't map more than 2 rows
+ if (reg-row0_enable reg-row1_enable)
+ return -1;
+
+ // can't remap the same row twice
+ if ((reg-row0_enable reg-row0 == row) ||
+ (reg-row1_enable reg-row1 == row)) {
+ return -1;
+ }
+
+ if (reg-row0_enable) {
+ reg-row1 = row;
+ reg-row1_enable = 1;
+ } else {
+ reg-row0 = row;
+ reg-row0_enable = 1;
+ }
+
+ return 0;
+}
+
+static int do_parse(int argc, char *argv[])
+{
+ int row, bank, sbank, i, ret;
+
+ for (i = 1; i argc; i++) {
+ ret = sscanf(argv[i], %d,%d,%d, row, bank, sbank);
+ if (ret != 3)
+ return i;
+ assert(disable_rbs(row, bank, sbank) == 0);
+ }
+ return 0;
+}
+
+int main(int argc, char *argv[])
+{
+ const int device = drm_get_card(0);
+ char *path;
+ unsigned int devid;
+ int drm_fd, fd, ret;
+
+ drm_fd = drm_open_any();
+ devid =
