1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * 440SPe's XOR engines support header file 4 * 5 * 2006-2009 (C) DENX Software Engineering. 6 * 7 * Author: Yuri Tikhonov <yur@emcraft.com> 8 */ 9 10 #ifndef _PPC440SPE_XOR_H 11 #define _PPC440SPE_XOR_H 12 13 #include <linux/types.h> 14 15 /* Number of XOR engines available on the contoller */ 16 #define XOR_ENGINES_NUM 1 17 18 /* Number of operands supported in the h/w */ 19 #define XOR_MAX_OPS 16 20 21 /* 22 * XOR Command Block Control Register bits 23 */ 24 #define XOR_CBCR_LNK_BIT (1<<31) /* link present */ 25 #define XOR_CBCR_TGT_BIT (1<<30) /* target present */ 26 #define XOR_CBCR_CBCE_BIT (1<<29) /* command block compete enable */ 27 #define XOR_CBCR_RNZE_BIT (1<<28) /* result not zero enable */ 28 #define XOR_CBCR_XNOR_BIT (1<<15) /* XOR/XNOR */ 29 #define XOR_CDCR_OAC_MSK (0x7F) /* operand address count */ 30 31 /* 32 * XORCore Status Register bits 33 */ 34 #define XOR_SR_XCP_BIT (1<<31) /* core processing */ 35 #define XOR_SR_ICB_BIT (1<<17) /* invalid CB */ 36 #define XOR_SR_IC_BIT (1<<16) /* invalid command */ 37 #define XOR_SR_IPE_BIT (1<<15) /* internal parity error */ 38 #define XOR_SR_RNZ_BIT (1<<2) /* result not Zero */ 39 #define XOR_SR_CBC_BIT (1<<1) /* CB complete */ 40 #define XOR_SR_CBLC_BIT (1<<0) /* CB list complete */ 41 42 /* 43 * XORCore Control Set and Reset Register bits 44 */ 45 #define XOR_CRSR_XASR_BIT (1<<31) /* soft reset */ 46 #define XOR_CRSR_XAE_BIT (1<<30) /* enable */ 47 #define XOR_CRSR_RCBE_BIT (1<<29) /* refetch CB enable */ 48 #define XOR_CRSR_PAUS_BIT (1<<28) /* pause */ 49 #define XOR_CRSR_64BA_BIT (1<<27) /* 64/32 CB format */ 50 #define XOR_CRSR_CLP_BIT (1<<25) /* continue list processing */ 51 52 /* 53 * XORCore Interrupt Enable Register 54 */ 55 #define XOR_IE_ICBIE_BIT (1<<17) /* Invalid Command Block IRQ Enable */ 56 #define XOR_IE_ICIE_BIT (1<<16) /* Invalid Command IRQ Enable */ 57 #define XOR_IE_RPTIE_BIT (1<<14) /* Read PLB Timeout Error IRQ Enable */ 58 #define XOR_IE_CBCIE_BIT (1<<1) /* CB complete interrupt enable */ 59 #define XOR_IE_CBLCI_BIT (1<<0) /* CB list complete interrupt enable */ 60 61 /* 62 * XOR Accelerator engine Command Block Type 63 */ 64 struct xor_cb { 65 /* 66 * Basic 64-bit format XOR CB (Table 19-1, p.463, 440spe_um_1_22.pdf) 67 */ 68 u32 cbc; /* control */ 69 u32 cbbc; /* byte count */ 70 u32 cbs; /* status */ 71 u8 pad0[4]; /* reserved */ 72 u32 cbtah; /* target address high */ 73 u32 cbtal; /* target address low */ 74 u32 cblah; /* link address high */ 75 u32 cblal; /* link address low */ 76 struct { 77 u32 h; 78 u32 l; 79 } __attribute__ ((packed)) ops[16]; 80 } __attribute__ ((packed)); 81 82 /* 83 * XOR hardware registers Table 19-3, UM 1.22 84 */ 85 struct xor_regs { 86 u32 op_ar[16][2]; /* operand address[0]-high,[1]-low registers */ 87 u8 pad0[352]; /* reserved */ 88 u32 cbcr; /* CB control register */ 89 u32 cbbcr; /* CB byte count register */ 90 u32 cbsr; /* CB status register */ 91 u8 pad1[4]; /* reserved */ 92 u32 cbtahr; /* operand target address high register */ 93 u32 cbtalr; /* operand target address low register */ 94 u32 cblahr; /* CB link address high register */ 95 u32 cblalr; /* CB link address low register */ 96 u32 crsr; /* control set register */ 97 u32 crrr; /* control reset register */ 98 u32 ccbahr; /* current CB address high register */ 99 u32 ccbalr; /* current CB address low register */ 100 u32 plbr; /* PLB configuration register */ 101 u32 ier; /* interrupt enable register */ 102 u32 pecr; /* parity error count register */ 103 u32 sr; /* status register */ 104 u32 revidr; /* revision ID register */ 105 }; 106 107 #endif /* _PPC440SPE_XOR_H */ 108