drivers/net/vsc9953: Initialize action RAM in VCAP complex

VCAP tables must be initialized even if no advanced classification
is used. If no initialization is performed, then ECC error will
be observed by the user when the first packet enters the l2switch.
The error is marked in MPIC_EISR0 -bit 29 which means - Internal RAM
multi-bit ECC error.
This patch fixes the aforementioned ECC error by performing the
initialization of VCAP tables.

Signed-off-by: Radu Bulie <radu-andrei.bulie@nxp.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/include/vsc9953.h b/include/vsc9953.h
index bb7f8ecde5..fe072da516 100644
--- a/include/vsc9953.h
+++ b/include/vsc9953.h
@@ -186,6 +186,76 @@
 
 #define MIIMIND_OPR_PEND		0x00000004
 
+#define VSC9953_BITMASK(offset)		((BIT(offset)) - 1)
+#define VSC9953_ENC_BITFIELD(target, offset, width) \
+	(((target) & VSC9953_BITMASK(width)) << (offset))
+
+#define VSC9953_IO_ADDR(target, offset)		((target) + (offset << 2))
+
+#define VSC9953_IO_REG(target, offset)	(VSC9953_IO_ADDR(target, offset))
+#define VSC9953_VCAP_CACHE_ENTRY_DAT(target, ri)  \
+	VSC9953_IO_REG(target, (0x2 + (ri)))
+
+#define VSC9953_VCAP_CACHE_MASK_DAT(target, ri) \
+	VSC9953_IO_REG(target, (0x42 + (ri)))
+
+#define VSC9953_VCAP_CACHE_TG_DAT(target)	VSC9953_IO_REG(target, 0xe2)
+#define VSC9953_VCAP_CFG_MV_CFG(target)	VSC9953_IO_REG(target, 0x1)
+#define VSC9953_VCAP_CFG_MV_CFG_SIZE(target) \
+	VSC9953_ENC_BITFIELD(target, 0, 16)
+
+#define VSC9953_VCAP_CFG_UPDATE_CTRL(target)	VSC9953_IO_REG(target, 0x0)
+#define VSC9953_VCAP_UPDATE_CTRL_UPDATE_CMD(target) \
+	VSC9953_ENC_BITFIELD(target, 22, 3)
+
+#define VSC9953_VCAP_UPDATE_CTRL_UPDATE_ADDR(target) \
+	VSC9953_ENC_BITFIELD(target, 3, 16)
+
+#define VSC9953_VCAP_UPDATE_CTRL_UPDATE_SHOT	BIT(2)
+#define VSC9953_VCAP_UPDATE_CTRL_UPDATE_ENTRY_DIS	BIT(21)
+#define VSC9953_VCAP_UPDATE_CTRL_UPDATE_ACTION_DIS	BIT(20)
+#define VSC9953_VCAP_UPDATE_CTRL_UPDATE_CNT_DIS		BIT(19)
+#define VSC9953_VCAP_CACHE_ACTION_DAT(target, ri) \
+	VSC9953_IO_REG(target, (0x82 + (ri)))
+
+#define VSC9953_VCAP_CACHE_CNT_DAT(target, ri)	\
+	VSC9953_IO_REG(target, (0xc2 + (ri)))
+
+#define VSC9953_PORT_OFFSET		1
+#define VSC9953_IS1_CNT			256
+#define VSC9953_IS2_CNT			1024
+#define VSC9953_ES0_CNT			1024
+
+#define BITS_TO_DWORD(in)		(1 + (((in) - 1) / 32))
+#define ENTRY_WORDS_ES0		BITS_TO_DWORD(29)
+#define ENTRY_WORDS_IS1		BITS_TO_DWORD(376)
+#define ENTRY_WORDS_IS2		BITS_TO_DWORD(376)
+#define ES0_ACT_WIDTH		BITS_TO_DWORD(91)
+#define ES0_CNT_WIDTH		BITS_TO_DWORD(1)
+#define IS1_ACT_WIDTH		BITS_TO_DWORD(320)
+#define IS1_CNT_WIDTH		BITS_TO_DWORD(4)
+#define IS2_ACT_WIDTH		BITS_TO_DWORD(103 - 2 * VSC9953_PORT_OFFSET)
+#define IS2_CNT_WIDTH		BITS_TO_DWORD(4 * 32)
+#define ES0_ACT_COUNT		(VSC9953_ES0_CNT + VSC9953_MAX_PORTS)
+#define IS1_ACT_COUNT		(VSC9953_IS1_CNT + 1)
+#define IS2_ACT_COUNT		(VSC9953_IS2_CNT + VSC9953_MAX_PORTS + 2)
+
+/* TCAM entries */
+enum tcam_sel {
+	TCAM_SEL_ENTRY   = BIT(0),
+	TCAM_SEL_ACTION  = BIT(1),
+	TCAM_SEL_COUNTER = BIT(2),
+	TCAM_SEL_ALL     = VSC9953_BITMASK(3),
+};
+
+enum tcam_cmd {
+	TCAM_CMD_WRITE      = 0,
+	TCAM_CMD_READ       = 1,
+	TCAM_CMD_MOVE_UP    = 2,
+	TCAM_CMD_MOVE_DOWN  = 3,
+	TCAM_CMD_INITIALIZE = 4,
+};
+
 struct vsc9953_mdio_info {
 	struct vsc9953_mii_mng	*regs;
 	char	*name;