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1 | jermar | 1 | /* |
319 | jermar | 2 | * Copyright (C) 2003-2004 Jakub Jermar |
1 | jermar | 3 | * All rights reserved. |
4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
341 | jermar | 29 | #ifndef __mips32_CP0_H__ |
30 | #define __mips32_CP0_H__ |
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1 | jermar | 31 | |
32 | #include <arch/types.h> |
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391 | jermar | 33 | #include <arch/mm/tlb.h> |
1 | jermar | 34 | |
35 | #define cp0_status_ie_enabled_bit (1<<0) |
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36 | #define cp0_status_exl_exception_bit (1<<1) |
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37 | #define cp0_status_erl_error_bit (1<<2) |
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326 | palkovsky | 38 | #define cp0_status_um_bit (1<<4) |
1 | jermar | 39 | #define cp0_status_bev_bootstrap_bit (1<<22) |
326 | palkovsky | 40 | #define cp0_status_fpu_bit (1<<29) |
1 | jermar | 41 | |
329 | palkovsky | 42 | #define cp0_status_im_shift 8 |
43 | #define cp0_status_im_mask 0xff00 |
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44 | |||
330 | palkovsky | 45 | #define cp0_cause_excno(cause) ((cause >> 2) & 0x1f) |
46 | #define cp0_cause_coperr(cause) ((cause >> 28) & 0x3) |
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47 | |||
48 | #define fpu_cop_id 1 |
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49 | |||
1 | jermar | 50 | /* |
51 | * Magic value for use in msim. |
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52 | * On AMD Duron 800Mhz, this roughly seems like one us. |
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53 | */ |
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54 | #define cp0_compare_value 10000 |
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55 | |||
329 | palkovsky | 56 | #define cp0_mask_all_int() cp0_status_write(cp0_status_read() & ~(cp0_status_im_mask)) |
57 | #define cp0_unmask_all_int() cp0_status_write(cp0_status_read() | cp0_status_im_mask) |
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58 | #define cp0_mask_int(it) cp0_status_write(cp0_status_read() & ~(1<<(cp0_status_im_shift+(it)))) |
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59 | #define cp0_unmask_int(it) cp0_status_write(cp0_status_read() | (1<<(cp0_status_im_shift+(it)))) |
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326 | palkovsky | 60 | |
1096 | palkovsky | 61 | #define GEN_READ_CP0(nm,reg) static inline __u32 cp0_ ##nm##_read(void) \ |
62 | { \ |
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63 | __u32 retval; \ |
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64 | asm("mfc0 %0, $" #reg : "=r"(retval)); \ |
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65 | return retval; \ |
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66 | } |
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1 | jermar | 67 | |
1096 | palkovsky | 68 | #define GEN_WRITE_CP0(nm,reg) static inline void cp0_ ##nm##_write(__u32 val) \ |
69 | { \ |
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70 | asm("mtc0 %0, $" #reg : : "r"(val) ); \ |
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71 | } |
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1 | jermar | 72 | |
1096 | palkovsky | 73 | GEN_READ_CP0(index, 0); |
74 | GEN_WRITE_CP0(index, 0); |
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1 | jermar | 75 | |
1096 | palkovsky | 76 | GEN_READ_CP0(random, 1); |
1 | jermar | 77 | |
1096 | palkovsky | 78 | GEN_READ_CP0(entry_lo0, 2); |
79 | GEN_WRITE_CP0(entry_lo0, 2); |
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1 | jermar | 80 | |
1096 | palkovsky | 81 | GEN_READ_CP0(entry_lo1, 3); |
82 | GEN_WRITE_CP0(entry_lo1, 3); |
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1 | jermar | 83 | |
1096 | palkovsky | 84 | GEN_READ_CP0(context, 4); |
85 | GEN_WRITE_CP0(context, 4); |
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1 | jermar | 86 | |
1096 | palkovsky | 87 | GEN_READ_CP0(pagemask, 5); |
88 | GEN_WRITE_CP0(pagemask, 5); |
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1 | jermar | 89 | |
1096 | palkovsky | 90 | GEN_READ_CP0(wired, 6); |
91 | GEN_WRITE_CP0(wired, 6); |
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1 | jermar | 92 | |
1096 | palkovsky | 93 | GEN_READ_CP0(badvaddr, 8); |
1 | jermar | 94 | |
1096 | palkovsky | 95 | GEN_READ_CP0(count, 9); |
96 | GEN_WRITE_CP0(count, 9); |
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1 | jermar | 97 | |
1096 | palkovsky | 98 | GEN_READ_CP0(entry_hi, 10); |
99 | GEN_WRITE_CP0(entry_hi, 10); |
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1 | jermar | 100 | |
1096 | palkovsky | 101 | GEN_READ_CP0(compare, 11); |
102 | GEN_WRITE_CP0(compare, 11); |
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1 | jermar | 103 | |
1096 | palkovsky | 104 | GEN_READ_CP0(status, 12); |
105 | GEN_WRITE_CP0(status, 12); |
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1 | jermar | 106 | |
1096 | palkovsky | 107 | GEN_READ_CP0(cause, 13); |
108 | GEN_WRITE_CP0(cause, 13); |
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1 | jermar | 109 | |
1096 | palkovsky | 110 | GEN_READ_CP0(epc, 14); |
111 | GEN_WRITE_CP0(epc, 14); |
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112 | |||
113 | GEN_READ_CP0(prid, 15); |
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114 | |||
1 | jermar | 115 | #endif |