1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * mxcc.h: Definitions of the Viking MXCC registers
4 *
5 * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
6 */
7
8 #ifndef _SPARC_MXCC_H
9 #define _SPARC_MXCC_H
10
11 /* These registers are accessed through ASI 0x2. */
12 #define MXCC_DATSTREAM 0x1C00000 /* Data stream register */
13 #define MXCC_SRCSTREAM 0x1C00100 /* Source stream register */
14 #define MXCC_DESSTREAM 0x1C00200 /* Destination stream register */
15 #define MXCC_RMCOUNT 0x1C00300 /* Count of references and misses */
16 #define MXCC_STEST 0x1C00804 /* Internal self-test */
17 #define MXCC_CREG 0x1C00A04 /* Control register */
18 #define MXCC_SREG 0x1C00B00 /* Status register */
19 #define MXCC_RREG 0x1C00C04 /* Reset register */
20 #define MXCC_EREG 0x1C00E00 /* Error code register */
21 #define MXCC_PREG 0x1C00F04 /* Address port register */
22
23 /* Some MXCC constants. */
24 #define MXCC_STREAM_SIZE 0x20 /* Size in bytes of one stream r/w */
25
26 /* The MXCC Control Register:
27 *
28 * ----------------------------------------------------------------------
29 * | | RRC | RSV |PRE|MCE|PARE|ECE|RSV|
30 * ----------------------------------------------------------------------
31 * 31 10 9 8-6 5 4 3 2 1-0
32 *
33 * RRC: Controls what you read from MXCC_RMCOUNT reg.
34 * 0=Misses 1=References
35 * PRE: Prefetch enable
36 * MCE: Multiple Command Enable
37 * PARE: Parity enable
38 * ECE: External cache enable
39 */
40
41 #define MXCC_CTL_RRC 0x00000200
42 #define MXCC_CTL_PRE 0x00000020
43 #define MXCC_CTL_MCE 0x00000010
44 #define MXCC_CTL_PARE 0x00000008
45 #define MXCC_CTL_ECE 0x00000004
46
47 /* The MXCC Error Register:
48 *
49 * --------------------------------------------------------
50 * |ME| RSV|CE|PEW|PEE|ASE|EIV| MOPC|ECODE|PRIV|RSV|HPADDR|
51 * --------------------------------------------------------
52 * 31 30 29 28 27 26 25 24-15 14-7 6 5-3 2-0
53 *
54 * ME: Multiple Errors have occurred
55 * CE: Cache consistency Error
56 * PEW: Parity Error during a Write operation
57 * PEE: Parity Error involving the External cache
58 * ASE: ASynchronous Error
59 * EIV: This register is toast
60 * MOPC: MXCC Operation Code for instance causing error
61 * ECODE: The Error CODE
62 * PRIV: A privileged mode error? 0=no 1=yes
63 * HPADDR: High PhysicalADDRess bits (35-32)
64 */
65
66 #define MXCC_ERR_ME 0x80000000
67 #define MXCC_ERR_CE 0x20000000
68 #define MXCC_ERR_PEW 0x10000000
69 #define MXCC_ERR_PEE 0x08000000
70 #define MXCC_ERR_ASE 0x04000000
71 #define MXCC_ERR_EIV 0x02000000
72 #define MXCC_ERR_MOPC 0x01FF8000
73 #define MXCC_ERR_ECODE 0x00007F80
74 #define MXCC_ERR_PRIV 0x00000040
75 #define MXCC_ERR_HPADDR 0x0000000f
76
77 /* The MXCC Port register:
78 *
79 * -----------------------------------------------------
80 * | | MID | |
81 * -----------------------------------------------------
82 * 31 21 20-18 17 0
83 *
84 * MID: The moduleID of the cpu your read this from.
85 */
86
87 #ifndef __ASSEMBLY__
88
89 static inline void mxcc_set_stream_src(unsigned long *paddr)
90 {
91 unsigned long data0 = paddr[0];
92 unsigned long data1 = paddr[1];
93
94 __asm__ __volatile__ ("or %%g0, %0, %%g2\n\t"
95 "or %%g0, %1, %%g3\n\t"
96 "stda %%g2, [%2] %3\n\t" : :
97 "r" (data0), "r" (data1),
98 "r" (MXCC_SRCSTREAM),
99 "i" (ASI_M_MXCC) : "g2", "g3");
100 }
101
102 static inline void mxcc_set_stream_dst(unsigned long *paddr)
103 {
104 unsigned long data0 = paddr[0];
105 unsigned long data1 = paddr[1];
106
107 __asm__ __volatile__ ("or %%g0, %0, %%g2\n\t"
108 "or %%g0, %1, %%g3\n\t"
109 "stda %%g2, [%2] %3\n\t" : :
110 "r" (data0), "r" (data1),
111 "r" (MXCC_DESSTREAM),
112 "i" (ASI_M_MXCC) : "g2", "g3");
113 }
114
115 static inline unsigned long mxcc_get_creg(void)
116 {
117 unsigned long mxcc_control;
118
119 __asm__ __volatile__("set 0xffffffff, %%g2\n\t"
120 "set 0xffffffff, %%g3\n\t"
121 "stda %%g2, [%1] %2\n\t"
122 "lda [%3] %2, %0\n\t" :
123 "=r" (mxcc_control) :
124 "r" (MXCC_EREG), "i" (ASI_M_MXCC),
125 "r" (MXCC_CREG) : "g2", "g3");
126 return mxcc_control;
127 }
128
129 static inline void mxcc_set_creg(unsigned long mxcc_control)
130 {
131 __asm__ __volatile__("sta %0, [%1] %2\n\t" : :
132 "r" (mxcc_control), "r" (MXCC_CREG),
133 "i" (ASI_M_MXCC));
134 }
135
136 #endif /* !__ASSEMBLY__ */
137
138 #endif /* !(_SPARC_MXCC_H) */