1 files changed, 107 insertions, 0 deletions
diff --git a/drivers/dma/ppc4xx/xor.h b/drivers/dma/ppc4xx/xor.h
new file mode 100644
index 0000000000..da1230df28
--- /dev/null
+++ b/drivers/dma/ppc4xx/xor.h
@@ -0,0 +1,107 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * 440SPe's XOR engines support header file
+ *
+ * 2006-2009 (C) DENX Software Engineering.
+ *
+ * Author: Yuri Tikhonov <yur@emcraft.com>
+ */
+
+#ifndef _PPC440SPE_XOR_H
+#define _PPC440SPE_XOR_H
+
+#include <linux/types.h>
+
+/* Number of XOR engines available on the contoller */
+#define XOR_ENGINES_NUM		1
+
+/* Number of operands supported in the h/w */
+#define XOR_MAX_OPS		16
+
+/*
+ * XOR Command Block Control Register bits
+ */
+#define XOR_CBCR_LNK_BIT        (1<<31) /* link present */
+#define XOR_CBCR_TGT_BIT        (1<<30) /* target present */
+#define XOR_CBCR_CBCE_BIT       (1<<29) /* command block compete enable */
+#define XOR_CBCR_RNZE_BIT       (1<<28) /* result not zero enable */
+#define XOR_CBCR_XNOR_BIT       (1<<15) /* XOR/XNOR */
+#define XOR_CDCR_OAC_MSK        (0x7F)  /* operand address count */
+
+/*
+ * XORCore Status Register bits
+ */
+#define XOR_SR_XCP_BIT		(1<<31)	/* core processing */
+#define XOR_SR_ICB_BIT		(1<<17)	/* invalid CB */
+#define XOR_SR_IC_BIT		(1<<16)	/* invalid command */
+#define XOR_SR_IPE_BIT		(1<<15)	/* internal parity error */
+#define XOR_SR_RNZ_BIT		(1<<2)	/* result not Zero */
+#define XOR_SR_CBC_BIT		(1<<1)	/* CB complete */
+#define XOR_SR_CBLC_BIT		(1<<0)	/* CB list complete */
+
+/*
+ * XORCore Control Set and Reset Register bits
+ */
+#define XOR_CRSR_XASR_BIT	(1<<31)	/* soft reset */
+#define XOR_CRSR_XAE_BIT	(1<<30)	/* enable */
+#define XOR_CRSR_RCBE_BIT	(1<<29)	/* refetch CB enable */
+#define XOR_CRSR_PAUS_BIT	(1<<28)	/* pause */
+#define XOR_CRSR_64BA_BIT	(1<<27) /* 64/32 CB format */
+#define XOR_CRSR_CLP_BIT	(1<<25)	/* continue list processing */
+
+/*
+ * XORCore Interrupt Enable Register
+ */
+#define XOR_IE_ICBIE_BIT	(1<<17)	/* Invalid Command Block IRQ Enable */
+#define XOR_IE_ICIE_BIT		(1<<16)	/* Invalid Command IRQ Enable */
+#define XOR_IE_RPTIE_BIT	(1<<14)	/* Read PLB Timeout Error IRQ Enable */
+#define XOR_IE_CBCIE_BIT	(1<<1)	/* CB complete interrupt enable */
+#define XOR_IE_CBLCI_BIT	(1<<0)	/* CB list complete interrupt enable */
+
+/*
+ * XOR Accelerator engine Command Block Type
+ */
+struct xor_cb {
+	/*
+	 * Basic 64-bit format XOR CB (Table 19-1, p.463, 440spe_um_1_22.pdf)
+	 */
+	u32	cbc;		/* control */
+	u32	cbbc;		/* byte count */
+	u32	cbs;		/* status */
+	u8	pad0[4];	/* reserved */
+	u32	cbtah;		/* target address high */
+	u32	cbtal;		/* target address low */
+	u32	cblah;		/* link address high */
+	u32	cblal;		/* link address low */
+	struct {
+		u32 h;
+		u32 l;
+	} __attribute__ ((packed)) ops[16];
+} __attribute__ ((packed));
+
+/*
+ * XOR hardware registers Table 19-3, UM 1.22
+ */
+struct xor_regs {
+	u32	op_ar[16][2];	/* operand address[0]-high,[1]-low registers */
+	u8	pad0[352];	/* reserved */
+	u32	cbcr;		/* CB control register */
+	u32	cbbcr;		/* CB byte count register */
+	u32	cbsr;		/* CB status register */
+	u8	pad1[4];	/* reserved */
+	u32	cbtahr;		/* operand target address high register */
+	u32	cbtalr;		/* operand target address low register */
+	u32	cblahr;		/* CB link address high register */
+	u32	cblalr;		/* CB link address low register */
+	u32	crsr;		/* control set register */
+	u32	crrr;		/* control reset register */
+	u32	ccbahr;		/* current CB address high register */
+	u32	ccbalr;		/* current CB address low register */
+	u32	plbr;		/* PLB configuration register */
+	u32	ier;		/* interrupt enable register */
+	u32	pecr;		/* parity error count register */
+	u32	sr;		/* status register */
+	u32	revidr;		/* revision ID register */
+};
+
+#endif /* _PPC440SPE_XOR_H */