EDAC, altera: Refactor for Altera CycloneV SoC

The Arria10 SoC uses a completely different SDRAM controller from the
earlier CycloneV and ArriaV SoCs. This patch abstracts the SDRAM bits
for the CycloneV/ArriaV SoCs in preparation for the Arria10 support.

Signed-off-by: Thor Thayer <tthayer@opensource.altera.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: devicetree@vger.kernel.org
Cc: dinguyen@opensource.altera.com
Cc: galak@codeaurora.org
Cc: grant.likely@linaro.org
Cc: ijc+devicetree@hellion.org.uk
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: m.chehab@samsung.com
Cc: mark.rutland@arm.com
Cc: pawel.moll@arm.com
Cc: robh+dt@kernel.org
Cc: tthayer.linux@gmail.com
Link: http://lkml.kernel.org/r/1433428128-7292-3-git-send-email-tthayer@opensource.altera.com
Signed-off-by: Borislav Petkov <bp@suse.de>

1 files changed, 116 insertions, 0 deletions

diff --git a/drivers/edac/altera_edac.h b/drivers/edac/altera_edac.h
new file mode 100644
index 000000000000..b744d914d976
--- /dev/null
+++ b/drivers/edac/altera_edac.h
@@ -0,0 +1,116 @@
+/*
+ *
+ * Copyright (C) 2015 Altera Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _ALTERA_EDAC_H
+#define _ALTERA_EDAC_H
+
+#include <linux/edac.h>
+#include <linux/types.h>
+
+/* SDRAM Controller CtrlCfg Register */
+#define CV_CTLCFG_OFST             0x00
+
+/* SDRAM Controller CtrlCfg Register Bit Masks */
+#define CV_CTLCFG_ECC_EN           0x400
+#define CV_CTLCFG_ECC_CORR_EN      0x800
+#define CV_CTLCFG_GEN_SB_ERR       0x2000
+#define CV_CTLCFG_GEN_DB_ERR       0x4000
+
+#define CV_CTLCFG_ECC_AUTO_EN     (CV_CTLCFG_ECC_EN | \
+				   CV_CTLCFG_ECC_CORR_EN)
+
+/* SDRAM Controller Address Width Register */
+#define CV_DRAMADDRW_OFST          0x2C
+
+/* SDRAM Controller Address Widths Field Register */
+#define DRAMADDRW_COLBIT_MASK      0x001F
+#define DRAMADDRW_COLBIT_SHIFT     0
+#define DRAMADDRW_ROWBIT_MASK      0x03E0
+#define DRAMADDRW_ROWBIT_SHIFT     5
+#define CV_DRAMADDRW_BANKBIT_MASK  0x1C00
+#define CV_DRAMADDRW_BANKBIT_SHIFT 10
+#define CV_DRAMADDRW_CSBIT_MASK    0xE000
+#define CV_DRAMADDRW_CSBIT_SHIFT   13
+
+/* SDRAM Controller Interface Data Width Register */
+#define CV_DRAMIFWIDTH_OFST        0x30
+
+/* SDRAM Controller Interface Data Width Defines */
+#define CV_DRAMIFWIDTH_16B_ECC     24
+#define CV_DRAMIFWIDTH_32B_ECC     40
+
+/* SDRAM Controller DRAM Status Register */
+#define CV_DRAMSTS_OFST            0x38
+
+/* SDRAM Controller DRAM Status Register Bit Masks */
+#define CV_DRAMSTS_SBEERR          0x04
+#define CV_DRAMSTS_DBEERR          0x08
+#define CV_DRAMSTS_CORR_DROP       0x10
+
+/* SDRAM Controller DRAM IRQ Register */
+#define CV_DRAMINTR_OFST           0x3C
+
+/* SDRAM Controller DRAM IRQ Register Bit Masks */
+#define CV_DRAMINTR_INTREN         0x01
+#define CV_DRAMINTR_SBEMASK        0x02
+#define CV_DRAMINTR_DBEMASK        0x04
+#define CV_DRAMINTR_CORRDROPMASK   0x08
+#define CV_DRAMINTR_INTRCLR        0x10
+
+/* SDRAM Controller Single Bit Error Count Register */
+#define CV_SBECOUNT_OFST           0x40
+
+/* SDRAM Controller Double Bit Error Count Register */
+#define CV_DBECOUNT_OFST           0x44
+
+/* SDRAM Controller ECC Error Address Register */
+#define CV_ERRADDR_OFST            0x48
+
+struct altr_sdram_prv_data {
+	int ecc_ctrl_offset;
+	int ecc_ctl_en_mask;
+	int ecc_cecnt_offset;
+	int ecc_uecnt_offset;
+	int ecc_stat_offset;
+	int ecc_stat_ce_mask;
+	int ecc_stat_ue_mask;
+	int ecc_saddr_offset;
+	int ecc_daddr_offset;
+	int ecc_irq_en_offset;
+	int ecc_irq_en_mask;
+	int ecc_irq_clr_offset;
+	int ecc_irq_clr_mask;
+	int ecc_cnt_rst_offset;
+	int ecc_cnt_rst_mask;
+#ifdef CONFIG_EDAC_DEBUG
+	struct edac_dev_sysfs_attribute *eccmgr_sysfs_attr;
+	int ecc_enable_mask;
+	int ce_set_mask;
+	int ue_set_mask;
+	int ce_ue_trgr_offset;
+#endif
+};
+
+/* Altera SDRAM Memory Controller data */
+struct altr_sdram_mc_data {
+	struct regmap *mc_vbase;
+	int sb_irq;
+	int db_irq;
+	const struct altr_sdram_prv_data *data;
+};
+
+#endif	/* #ifndef _ALTERA_EDAC_H */