projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1394f032 | 1 | /* |
| 96f1050d | 2 | * Implementation of outs{bwl} for BlackFin processors using zero overhead loops. |
| 1394f032 | 3 | * |
| 96f1050d RG |
4 | * Copyright 2005-2009 Analog Devices Inc. |
| 5 | * 2005 BuyWays BV | |
| 6 | * Bas Vermeulen <bas@buyways.nl> | |
| 1394f032 | 7 | * |
| 96f1050d | 8 | * Licensed under the GPL-2. |
| 1394f032 BW |
9 | */ |
| 10 | ||
| 11 | #include <linux/linkage.h> | |
| 12 | ||
| 13 | .align 2 | |
| 14 | ||
| 15 | ENTRY(_outsl) | |
| bb7b1129 MF |
16 | CC = R2 == 0; |
| 17 | IF CC JUMP 1f; | |
| 1394f032 BW |
18 | P0 = R0; /* P0 = port */ |
| 19 | P1 = R1; /* P1 = address */ | |
| 20 | P2 = R2; /* P2 = count */ | |
| 21 | ||
| 22 | LSETUP( .Llong_loop_s, .Llong_loop_e) LC0 = P2; | |
| 23 | .Llong_loop_s: R0 = [P1++]; | |
| 24 | .Llong_loop_e: [P0] = R0; | |
| bb7b1129 | 25 | 1: RTS; |
| 51be24c3 | 26 | ENDPROC(_outsl) |
| 1394f032 BW |
27 | |
| 28 | ENTRY(_outsw) | |
| bb7b1129 MF |
29 | CC = R2 == 0; |
| 30 | IF CC JUMP 1f; | |
| 1394f032 BW |
31 | P0 = R0; /* P0 = port */ |
| 32 | P1 = R1; /* P1 = address */ | |
| 33 | P2 = R2; /* P2 = count */ | |
| 34 | ||
| 35 | LSETUP( .Lword_loop_s, .Lword_loop_e) LC0 = P2; | |
| 36 | .Lword_loop_s: R0 = W[P1++]; | |
| 37 | .Lword_loop_e: W[P0] = R0; | |
| bb7b1129 | 38 | 1: RTS; |
| 51be24c3 | 39 | ENDPROC(_outsw) |
| 1394f032 BW |
40 | |
| 41 | ENTRY(_outsb) | |
| bb7b1129 MF |
42 | CC = R2 == 0; |
| 43 | IF CC JUMP 1f; | |
| 1394f032 BW |
44 | P0 = R0; /* P0 = port */ |
| 45 | P1 = R1; /* P1 = address */ | |
| 46 | P2 = R2; /* P2 = count */ | |
| 47 | ||
| 48 | LSETUP( .Lbyte_loop_s, .Lbyte_loop_e) LC0 = P2; | |
| 49 | .Lbyte_loop_s: R0 = B[P1++]; | |
| 50 | .Lbyte_loop_e: B[P0] = R0; | |
| bb7b1129 | 51 | 1: RTS; |
| 51be24c3 | 52 | ENDPROC(_outsb) |
| 59069676 MH |
53 | |
| 54 | ENTRY(_outsw_8) | |
| bb7b1129 MF |
55 | CC = R2 == 0; |
| 56 | IF CC JUMP 1f; | |
| 59069676 MH |
57 | P0 = R0; /* P0 = port */ |
| 58 | P1 = R1; /* P1 = address */ | |
| 59 | P2 = R2; /* P2 = count */ | |
| 60 | ||
| 61 | LSETUP( .Lword8_loop_s, .Lword8_loop_e) LC0 = P2; | |
| 62 | .Lword8_loop_s: R1 = B[P1++]; | |
| 63 | R0 = B[P1++]; | |
| 64 | R0 = R0 << 8; | |
| 65 | R0 = R0 + R1; | |
| 66 | .Lword8_loop_e: W[P0] = R0; | |
| bb7b1129 | 67 | 1: RTS; |
| ca56d9aa | 68 | ENDPROC(_outsw_8) |