| 1 | /* Copyright 2007-2014 Free Software Foundation, Inc. |
| 2 | |
| 3 | This program is free software; you can redistribute it and/or modify |
| 4 | it under the terms of the GNU General Public License as published by |
| 5 | the Free Software Foundation; either version 3 of the License, or |
| 6 | (at your option) any later version. |
| 7 | |
| 8 | This program is distributed in the hope that it will be useful, |
| 9 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | GNU General Public License for more details. |
| 12 | |
| 13 | You should have received a copy of the GNU General Public License |
| 14 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 15 | |
| 16 | This file is part of the gdb testsuite. |
| 17 | |
| 18 | Contributed by Markus Deuling <deuling@de.ibm.com>. |
| 19 | Tests for 'info spu' commands. */ |
| 20 | |
| 21 | #include <stdio.h> |
| 22 | #include <string.h> |
| 23 | #include <sys/types.h> |
| 24 | #include <sys/stat.h> |
| 25 | #include <fcntl.h> |
| 26 | #include <spu_mfcio.h> |
| 27 | |
| 28 | |
| 29 | /* PPE-assisted call interface. */ |
| 30 | void |
| 31 | send_to_ppe (unsigned int signalcode, unsigned int opcode, void *data) |
| 32 | { |
| 33 | __vector unsigned int stopfunc = |
| 34 | { |
| 35 | signalcode, /* stop */ |
| 36 | (opcode << 24) | (unsigned int) data, |
| 37 | 0x4020007f, /* nop */ |
| 38 | 0x35000000 /* bi $0 */ |
| 39 | }; |
| 40 | |
| 41 | void (*f) (void) = (void *) &stopfunc; |
| 42 | asm ("sync"); |
| 43 | f (); |
| 44 | } |
| 45 | |
| 46 | /* PPE-assisted call to mmap from SPU. */ |
| 47 | unsigned long long |
| 48 | mmap_ea (unsigned long long start, size_t length, |
| 49 | int prot, int flags, int fd, off_t offset) |
| 50 | { |
| 51 | struct mmap_args |
| 52 | { |
| 53 | unsigned long long start __attribute__ ((aligned (16))); |
| 54 | size_t length __attribute__ ((aligned (16))); |
| 55 | int prot __attribute__ ((aligned (16))); |
| 56 | int flags __attribute__ ((aligned (16))); |
| 57 | int fd __attribute__ ((aligned (16))); |
| 58 | off_t offset __attribute__ ((aligned (16))); |
| 59 | } args; |
| 60 | |
| 61 | args.start = start; |
| 62 | args.length = length; |
| 63 | args.prot = prot; |
| 64 | args.flags = flags; |
| 65 | args.fd = fd; |
| 66 | args.offset = offset; |
| 67 | |
| 68 | send_to_ppe (0x2101, 11, &args); |
| 69 | return args.start; |
| 70 | } |
| 71 | |
| 72 | /* This works only in a Linux environment with <= 1024 open |
| 73 | file descriptors for one process. Result is the file |
| 74 | descriptor for the current context if available. */ |
| 75 | int |
| 76 | find_context_fd (void) |
| 77 | { |
| 78 | int dir_fd = -1; |
| 79 | int i; |
| 80 | |
| 81 | for (i = 0; i < 1024; i++) |
| 82 | { |
| 83 | struct stat stat; |
| 84 | |
| 85 | if (fstat (i, &stat) < 0) |
| 86 | break; |
| 87 | if (S_ISDIR (stat.st_mode)) |
| 88 | dir_fd = dir_fd == -1 ? i : -2; |
| 89 | } |
| 90 | return dir_fd < 0 ? -1 : dir_fd; |
| 91 | } |
| 92 | |
| 93 | /* Open the context file and return the file handler. */ |
| 94 | int |
| 95 | open_context_file (int context_fd, char *name, int flags) |
| 96 | { |
| 97 | char buf[128]; |
| 98 | |
| 99 | if (context_fd < 0) |
| 100 | return -1; |
| 101 | |
| 102 | sprintf (buf, "/proc/self/fd/%d/%s", context_fd, name); |
| 103 | return open (buf, flags); |
| 104 | } |
| 105 | |
| 106 | |
| 107 | int |
| 108 | do_event_test () |
| 109 | { |
| 110 | spu_write_event_mask (MFC_MULTI_SRC_SYNC_EVENT); /* 0x1000 */ /* Marker Event */ |
| 111 | spu_write_event_mask (MFC_PRIV_ATTN_EVENT); /* 0x0800 */ |
| 112 | spu_write_event_mask (MFC_LLR_LOST_EVENT); /* 0x0400 */ |
| 113 | spu_write_event_mask (MFC_SIGNAL_NOTIFY_1_EVENT); /* 0x0200 */ |
| 114 | spu_write_event_mask (MFC_SIGNAL_NOTIFY_2_EVENT); /* 0x0100 */ |
| 115 | spu_write_event_mask (MFC_OUT_MBOX_AVAILABLE_EVENT); /* 0x0080 */ |
| 116 | spu_write_event_mask (MFC_OUT_INTR_MBOX_AVAILABLE_EVENT); /* 0x0040 */ |
| 117 | spu_write_event_mask (MFC_DECREMENTER_EVENT); /* 0x0020 */ |
| 118 | spu_write_event_mask (MFC_IN_MBOX_AVAILABLE_EVENT); /* 0x0010 */ |
| 119 | spu_write_event_mask (MFC_COMMAND_QUEUE_AVAILABLE_EVENT); /* 0x0008 */ |
| 120 | spu_write_event_mask (MFC_LIST_STALL_NOTIFY_EVENT); /* 0x0002 */ |
| 121 | spu_write_event_mask (MFC_TAG_STATUS_UPDATE_EVENT); /* 0x0001 */ |
| 122 | |
| 123 | return 0; |
| 124 | } |
| 125 | |
| 126 | int |
| 127 | do_dma_test () |
| 128 | { |
| 129 | #define MAP_FAILED (-1ULL) |
| 130 | #define PROT_READ 0x1 |
| 131 | #define MAP_PRIVATE 0x002 |
| 132 | #define BSIZE 128 |
| 133 | static char buf[BSIZE] __attribute__ ((aligned (128))); |
| 134 | char *file = "/var/tmp/tmp_buf"; |
| 135 | struct stat fdstat; |
| 136 | int fd, cnt; |
| 137 | unsigned long long src; |
| 138 | |
| 139 | /* Create a file and fill it with some bytes. */ |
| 140 | fd = open (file, O_CREAT | O_RDWR | O_TRUNC, 0777); |
| 141 | if (fd == -1) |
| 142 | return -1; |
| 143 | memset ((void *)buf, '1', BSIZE); |
| 144 | write (fd, buf, BSIZE); |
| 145 | write (fd, buf, BSIZE); |
| 146 | memset ((void *)buf, 0, BSIZE); |
| 147 | |
| 148 | if (fstat (fd, &fdstat) != 0 |
| 149 | || !fdstat.st_size) |
| 150 | return -2; |
| 151 | |
| 152 | src = mmap_ea(0ULL, fdstat.st_size, PROT_READ, MAP_PRIVATE, fd, 0); |
| 153 | if (src == MAP_FAILED) |
| 154 | return -3; |
| 155 | |
| 156 | /* Copy some data via DMA. */ |
| 157 | mfc_get (&buf, src, BSIZE, 5, 0, 0); /* Marker DMA */ |
| 158 | mfc_write_tag_mask (1<<5); /* Marker DMAWait */ |
| 159 | spu_mfcstat (MFC_TAG_UPDATE_ALL); |
| 160 | |
| 161 | /* Close the file. */ |
| 162 | close (fd); |
| 163 | |
| 164 | return cnt; |
| 165 | } |
| 166 | |
| 167 | int |
| 168 | do_mailbox_test () |
| 169 | { |
| 170 | /* Write to SPU Outbound Mailbox. */ |
| 171 | if (spu_stat_out_mbox ()) /* Marker Mbox */ |
| 172 | spu_write_out_mbox (0x12345678); |
| 173 | |
| 174 | /* Write to SPU Outbound Interrupt Mailbox. */ |
| 175 | if (spu_stat_out_intr_mbox ()) |
| 176 | spu_write_out_intr_mbox (0x12345678); |
| 177 | |
| 178 | return 0; /* Marker MboxEnd */ |
| 179 | } |
| 180 | |
| 181 | int |
| 182 | do_signal_test () |
| 183 | { |
| 184 | struct stat fdstat; |
| 185 | int context_fd = find_context_fd (); |
| 186 | int ret, buf, fd; |
| 187 | |
| 188 | buf = 23; /* Marker Signal */ |
| 189 | /* Write to signal1. */ |
| 190 | fd = open_context_file (context_fd, "signal1", O_RDWR); |
| 191 | if (fstat (fd, &fdstat) != 0) |
| 192 | return -1; |
| 193 | ret = write (fd, buf, sizeof (int)); |
| 194 | close (fd); /* Marker Signal1 */ |
| 195 | |
| 196 | /* Write to signal2. */ |
| 197 | fd = open_context_file (context_fd, "signal2", O_RDWR); |
| 198 | if (fstat (fd, &fdstat) != 0) |
| 199 | return -1; |
| 200 | ret = write (fd, buf, sizeof (int)); |
| 201 | close (fd); /* Marker Signal2 */ |
| 202 | |
| 203 | /* Read signal1. */ |
| 204 | if (spu_stat_signal1 ()) |
| 205 | ret = spu_read_signal1 (); |
| 206 | |
| 207 | /* Read signal2. */ |
| 208 | if (spu_stat_signal2 ()) |
| 209 | ret = spu_read_signal2 (); /* Marker SignalRead */ |
| 210 | |
| 211 | return 0; |
| 212 | } |
| 213 | |
| 214 | int |
| 215 | main (unsigned long long speid, unsigned long long argp, |
| 216 | unsigned long long envp) |
| 217 | { |
| 218 | int res; |
| 219 | |
| 220 | /* info spu event */ |
| 221 | res = do_event_test (); |
| 222 | |
| 223 | /* info spu dma */ |
| 224 | res = do_dma_test (); |
| 225 | |
| 226 | /* info spu mailbox */ |
| 227 | res = do_mailbox_test (); |
| 228 | |
| 229 | /* info spu signal */ |
| 230 | res = do_signal_test (); |
| 231 | |
| 232 | return 0; |
| 233 | } |
| 234 | |