David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 1 | /* Copyright (C) 2011 The Android Open Source Project |
| 2 | ** |
| 3 | ** This software is licensed under the terms of the GNU General Public |
| 4 | ** License version 2, as published by the Free Software Foundation, and |
| 5 | ** may be copied, distributed, and modified under those terms. |
| 6 | ** |
| 7 | ** This program is distributed in the hope that it will be useful, |
| 8 | ** but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | ** GNU General Public License for more details. |
| 11 | */ |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 12 | #include "android/utils/panic.h" |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 13 | #include "android/utils/system.h" |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 14 | #include "hw/goldfish_pipe.h" |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 15 | #include "hw/goldfish_device.h" |
| 16 | #include "qemu-timer.h" |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 17 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 18 | #define DEBUG 1 |
| 19 | |
| 20 | /* Set to 1 to debug i/o register reads/writes */ |
| 21 | #define DEBUG_REGS 0 |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 22 | |
| 23 | #if DEBUG >= 1 |
| 24 | # define D(...) fprintf(stderr, __VA_ARGS__), fprintf(stderr, "\n") |
| 25 | #else |
| 26 | # define D(...) (void)0 |
| 27 | #endif |
| 28 | |
| 29 | #if DEBUG >= 2 |
| 30 | # define DD(...) fprintf(stderr, __VA_ARGS__), fprintf(stderr, "\n") |
| 31 | #else |
| 32 | # define DD(...) (void)0 |
| 33 | #endif |
| 34 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 35 | #if DEBUG_REGS >= 1 |
| 36 | # define DR(...) D(__VA_ARGS__) |
| 37 | #else |
| 38 | # define DR(...) (void)0 |
| 39 | #endif |
| 40 | |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 41 | #define E(...) fprintf(stderr, "ERROR:" __VA_ARGS__), fprintf(stderr, "\n") |
| 42 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 43 | /* Set to 1 to enable the 'zero' pipe type, useful for debugging */ |
| 44 | #define DEBUG_ZERO_PIPE 1 |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 45 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 46 | /* Set to 1 to enable the 'pingpong' pipe type, useful for debugging */ |
| 47 | #define DEBUG_PINGPONG_PIPE 1 |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 48 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 49 | /* Set to 1 to enable the 'throttle' pipe type, useful for debugging */ |
| 50 | #define DEBUG_THROTTLE_PIPE 1 |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 51 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 52 | /*********************************************************************** |
| 53 | *********************************************************************** |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 54 | ***** |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 55 | ***** P I P E S E R V I C E R E G I S T R A T I O N |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 56 | ***** |
| 57 | *****/ |
| 58 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 59 | #define MAX_PIPE_SERVICES 8 |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 60 | typedef struct { |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 61 | const char* name; |
| 62 | void* opaque; |
| 63 | GoldfishPipeFuncs funcs; |
| 64 | } PipeService; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 65 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 66 | typedef struct { |
| 67 | int count; |
| 68 | PipeService services[MAX_PIPE_SERVICES]; |
| 69 | } PipeServices; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 70 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 71 | static PipeServices _pipeServices[1]; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 72 | |
| 73 | void |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 74 | goldfish_pipe_add_type(const char* pipeName, |
| 75 | void* pipeOpaque, |
| 76 | const GoldfishPipeFuncs* pipeFuncs ) |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 77 | { |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 78 | PipeServices* list = _pipeServices; |
| 79 | int count = list->count; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 80 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 81 | if (count >= MAX_PIPE_SERVICES) { |
| 82 | APANIC("Too many goldfish pipe services (%d)", count); |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 83 | } |
| 84 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 85 | list->services[count].name = pipeName; |
| 86 | list->services[count].opaque = pipeOpaque; |
| 87 | list->services[count].funcs = pipeFuncs[0]; |
| 88 | |
| 89 | list->count++; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 90 | } |
| 91 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 92 | static const PipeService* |
| 93 | goldfish_pipe_find_type(const char* pipeName) |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 94 | { |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 95 | PipeServices* list = _pipeServices; |
| 96 | int count = list->count; |
| 97 | int nn; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 98 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 99 | for (nn = 0; nn < count; nn++) { |
| 100 | if (!strcmp(list->services[nn].name, pipeName)) { |
| 101 | return &list->services[nn]; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 102 | } |
| 103 | } |
| 104 | return NULL; |
| 105 | } |
| 106 | |
| 107 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 108 | /*********************************************************************** |
| 109 | *********************************************************************** |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 110 | ***** |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 111 | ***** P I P E C O N N E C T I O N S |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 112 | ***** |
| 113 | *****/ |
| 114 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 115 | typedef struct PipeDevice PipeDevice; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 116 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 117 | typedef struct Pipe { |
| 118 | struct Pipe* next; |
| 119 | struct Pipe* next_waked; |
| 120 | PipeDevice* device; |
| 121 | uint32_t channel; |
| 122 | void* opaque; |
| 123 | const GoldfishPipeFuncs* funcs; |
| 124 | unsigned char wanted; |
| 125 | char closed; |
| 126 | } Pipe; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 127 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 128 | /* Forward */ |
| 129 | static void* pipeConnector_new(Pipe* pipe); |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 130 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 131 | Pipe* |
| 132 | pipe_new(uint32_t channel, PipeDevice* dev) |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 133 | { |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 134 | Pipe* pipe; |
| 135 | ANEW0(pipe); |
| 136 | pipe->channel = channel; |
| 137 | pipe->device = dev; |
| 138 | pipe->opaque = pipeConnector_new(pipe); |
| 139 | return pipe; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 140 | } |
| 141 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 142 | static Pipe** |
| 143 | pipe_list_findp_channel( Pipe** list, uint32_t channel ) |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 144 | { |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 145 | Pipe** pnode = list; |
| 146 | for (;;) { |
| 147 | Pipe* node = *pnode; |
| 148 | if (node == NULL || node->channel == channel) { |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 149 | break; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 150 | } |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 151 | pnode = &node->next; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 152 | } |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 153 | return pnode; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 154 | } |
| 155 | |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 156 | #if 0 |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 157 | static Pipe** |
| 158 | pipe_list_findp_opaque( Pipe** list, void* opaque ) |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 159 | { |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 160 | Pipe** pnode = list; |
| 161 | for (;;) { |
| 162 | Pipe* node = *pnode; |
| 163 | if (node == NULL || node->opaque == opaque) { |
| 164 | break; |
| 165 | } |
| 166 | pnode = &node->next; |
| 167 | } |
| 168 | return pnode; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 169 | } |
| 170 | #endif |
| 171 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 172 | static Pipe** |
| 173 | pipe_list_findp_waked( Pipe** list, Pipe* pipe ) |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 174 | { |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 175 | Pipe** pnode = list; |
| 176 | for (;;) { |
| 177 | Pipe* node = *pnode; |
| 178 | if (node == NULL || node == pipe) { |
| 179 | break; |
| 180 | } |
| 181 | pnode = &node->next_waked; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 182 | } |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 183 | return pnode; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 184 | } |
| 185 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 186 | |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 187 | static void |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 188 | pipe_list_remove_waked( Pipe** list, Pipe* pipe ) |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 189 | { |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 190 | Pipe** lookup = pipe_list_findp_waked(list, pipe); |
| 191 | Pipe* node = *lookup; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 192 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 193 | if (node != NULL) { |
| 194 | (*lookup) = node->next_waked; |
| 195 | node->next_waked = NULL; |
| 196 | } |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 197 | } |
| 198 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 199 | /*********************************************************************** |
| 200 | *********************************************************************** |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 201 | ***** |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 202 | ***** P I P E C O N N E C T O R S |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 203 | ***** |
| 204 | *****/ |
| 205 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 206 | /* These are used to handle the initial connection attempt, where the |
| 207 | * client is going to write the name of the pipe service it wants to |
| 208 | * connect to, followed by a terminating zero. |
| 209 | */ |
| 210 | typedef struct { |
| 211 | Pipe* pipe; |
| 212 | char buffer[128]; |
| 213 | int buffpos; |
| 214 | } PipeConnector; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 215 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 216 | static const GoldfishPipeFuncs pipeConnector_funcs; // forward |
| 217 | |
| 218 | void* |
| 219 | pipeConnector_new(Pipe* pipe) |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 220 | { |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 221 | PipeConnector* pcon; |
| 222 | |
| 223 | ANEW0(pcon); |
| 224 | pcon->pipe = pipe; |
| 225 | pipe->funcs = &pipeConnector_funcs; |
| 226 | return pcon; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 227 | } |
| 228 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 229 | static void |
| 230 | pipeConnector_close( void* opaque ) |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 231 | { |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 232 | PipeConnector* pcon = opaque; |
| 233 | AFREE(pcon); |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 234 | } |
| 235 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 236 | static int |
| 237 | pipeConnector_sendBuffers( void* opaque, const GoldfishPipeBuffer* buffers, int numBuffers ) |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 238 | { |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 239 | PipeConnector* pcon = opaque; |
| 240 | const GoldfishPipeBuffer* buffers_limit = buffers + numBuffers; |
| 241 | int ret = 0; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 242 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 243 | DD("%s: channel=0x%x numBuffers=%d", __FUNCTION__, |
| 244 | pcon->pipe->channel, |
| 245 | numBuffers); |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 246 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 247 | while (buffers < buffers_limit) { |
| 248 | int avail; |
| 249 | |
| 250 | DD("%s: buffer data (%3d bytes): '%.*s'", __FUNCTION__, |
| 251 | buffers[0].size, buffers[0].size, buffers[0].data); |
| 252 | |
| 253 | if (buffers[0].size == 0) { |
| 254 | buffers++; |
| 255 | continue; |
| 256 | } |
| 257 | |
| 258 | avail = sizeof(pcon->buffer) - pcon->buffpos; |
| 259 | if (avail > buffers[0].size) |
| 260 | avail = buffers[0].size; |
| 261 | |
| 262 | if (avail > 0) { |
| 263 | memcpy(pcon->buffer + pcon->buffpos, buffers[0].data, avail); |
| 264 | pcon->buffpos += avail; |
| 265 | ret += avail; |
| 266 | } |
| 267 | buffers++; |
| 268 | } |
| 269 | |
| 270 | /* Now check that our buffer contains a zero-terminated string */ |
| 271 | if (memchr(pcon->buffer, '\0', pcon->buffpos) != NULL) { |
| 272 | /* Acceptable formats for the connection string are: |
| 273 | * |
| 274 | * pipe:<name> |
| 275 | * pipe:<name>:<arguments> |
| 276 | */ |
| 277 | char* pipeName; |
| 278 | char* pipeArgs; |
| 279 | |
| 280 | D("%s: connector: '%s'", __FUNCTION__, pcon->buffer); |
| 281 | |
| 282 | if (memcmp(pcon->buffer, "pipe:", 5) != 0) { |
| 283 | /* Nope, we don't handle these for now. */ |
| 284 | D("%s: Unknown pipe connection: '%s'", __FUNCTION__, pcon->buffer); |
| 285 | return PIPE_ERROR_INVAL; |
| 286 | } |
| 287 | |
| 288 | pipeName = pcon->buffer + 5; |
| 289 | pipeArgs = strchr(pipeName, ':'); |
| 290 | |
| 291 | if (pipeArgs != NULL) { |
| 292 | *pipeArgs++ = '\0'; |
| 293 | } |
| 294 | |
| 295 | Pipe* pipe = pcon->pipe; |
| 296 | const PipeService* svc = goldfish_pipe_find_type(pipeName); |
| 297 | if (svc == NULL) { |
| 298 | D("%s: Unknown server!", __FUNCTION__); |
| 299 | return PIPE_ERROR_INVAL; |
| 300 | } |
| 301 | |
| 302 | void* peer = svc->funcs.init(pipe, svc->opaque, pipeArgs); |
| 303 | if (peer == NULL) { |
| 304 | D("%s: Initialization failed!", __FUNCTION__); |
| 305 | return PIPE_ERROR_INVAL; |
| 306 | } |
| 307 | |
| 308 | /* Do the evil switch now */ |
| 309 | pipe->opaque = peer; |
| 310 | pipe->funcs = &svc->funcs; |
| 311 | AFREE(pcon); |
| 312 | } |
| 313 | |
| 314 | return ret; |
| 315 | } |
| 316 | |
| 317 | static int |
| 318 | pipeConnector_recvBuffers( void* opaque, GoldfishPipeBuffer* buffers, int numBuffers ) |
| 319 | { |
| 320 | return PIPE_ERROR_IO; |
| 321 | } |
| 322 | |
| 323 | static unsigned |
| 324 | pipeConnector_poll( void* opaque ) |
| 325 | { |
| 326 | return PIPE_WAKE_WRITE; |
| 327 | } |
| 328 | |
| 329 | static void |
| 330 | pipeConnector_wakeOn( void* opaque, int flags ) |
| 331 | { |
| 332 | /* nothing, really should never happen */ |
| 333 | } |
| 334 | |
| 335 | static const GoldfishPipeFuncs pipeConnector_funcs = { |
| 336 | NULL, /* init */ |
| 337 | pipeConnector_close, /* should rarely happen */ |
| 338 | pipeConnector_sendBuffers, /* the interesting stuff */ |
| 339 | pipeConnector_recvBuffers, /* should not happen */ |
| 340 | pipeConnector_poll, /* should not happen */ |
| 341 | pipeConnector_wakeOn, /* should not happen */ |
| 342 | }; |
| 343 | |
| 344 | /*********************************************************************** |
| 345 | *********************************************************************** |
| 346 | ***** |
| 347 | ***** Z E R O P I P E S |
| 348 | ***** |
| 349 | *****/ |
| 350 | |
| 351 | /* A simple pipe service that mimics /dev/zero, you can write anything to |
| 352 | * it, and you can always read any number of zeros from it. Useful for debugging |
| 353 | * the kernel driver. |
| 354 | */ |
| 355 | #if DEBUG_ZERO_PIPE |
| 356 | |
| 357 | typedef struct { |
| 358 | void* hwpipe; |
| 359 | } ZeroPipe; |
| 360 | |
| 361 | static void* |
| 362 | zeroPipe_init( void* hwpipe, void* svcOpaque, const char* args ) |
| 363 | { |
| 364 | ZeroPipe* zpipe; |
| 365 | |
| 366 | D("%s: hwpipe=%p", __FUNCTION__, hwpipe); |
| 367 | ANEW0(zpipe); |
| 368 | zpipe->hwpipe = hwpipe; |
| 369 | return zpipe; |
| 370 | } |
| 371 | |
| 372 | static void |
| 373 | zeroPipe_close( void* opaque ) |
| 374 | { |
| 375 | ZeroPipe* zpipe = opaque; |
| 376 | |
| 377 | D("%s: hwpipe=%p", __FUNCTION__, zpipe->hwpipe); |
| 378 | AFREE(zpipe); |
| 379 | } |
| 380 | |
| 381 | static int |
| 382 | zeroPipe_sendBuffers( void* opaque, const GoldfishPipeBuffer* buffers, int numBuffers ) |
| 383 | { |
| 384 | int ret = 0; |
| 385 | while (numBuffers > 0) { |
| 386 | ret += buffers[0].size; |
| 387 | buffers++; |
| 388 | numBuffers--; |
| 389 | } |
| 390 | return ret; |
| 391 | } |
| 392 | |
| 393 | static int |
| 394 | zeroPipe_recvBuffers( void* opaque, GoldfishPipeBuffer* buffers, int numBuffers ) |
| 395 | { |
| 396 | int ret = 0; |
| 397 | while (numBuffers > 0) { |
| 398 | ret += buffers[0].size; |
| 399 | memset(buffers[0].data, 0, buffers[0].size); |
| 400 | buffers++; |
| 401 | numBuffers--; |
| 402 | } |
| 403 | return ret; |
| 404 | } |
| 405 | |
| 406 | static unsigned |
| 407 | zeroPipe_poll( void* opaque ) |
| 408 | { |
| 409 | return PIPE_WAKE_READ | PIPE_WAKE_WRITE; |
| 410 | } |
| 411 | |
| 412 | static void |
| 413 | zeroPipe_wakeOn( void* opaque, int flags ) |
| 414 | { |
| 415 | /* nothing to do here */ |
| 416 | } |
| 417 | |
| 418 | static const GoldfishPipeFuncs zeroPipe_funcs = { |
| 419 | zeroPipe_init, |
| 420 | zeroPipe_close, |
| 421 | zeroPipe_sendBuffers, |
| 422 | zeroPipe_recvBuffers, |
| 423 | zeroPipe_poll, |
| 424 | zeroPipe_wakeOn, |
| 425 | }; |
| 426 | |
| 427 | #endif /* DEBUG_ZERO */ |
| 428 | |
| 429 | /*********************************************************************** |
| 430 | *********************************************************************** |
| 431 | ***** |
| 432 | ***** P I N G P O N G P I P E S |
| 433 | ***** |
| 434 | *****/ |
| 435 | |
| 436 | /* Similar debug service that sends back anything it receives */ |
| 437 | /* All data is kept in a circular dynamic buffer */ |
| 438 | |
| 439 | #if DEBUG_PINGPONG_PIPE |
| 440 | |
| 441 | /* Initial buffer size */ |
| 442 | #define PINGPONG_SIZE 1024 |
| 443 | |
| 444 | typedef struct { |
| 445 | void* hwpipe; |
| 446 | uint8_t* buffer; |
| 447 | size_t size; |
| 448 | size_t pos; |
| 449 | size_t count; |
| 450 | unsigned flags; |
| 451 | } PingPongPipe; |
| 452 | |
| 453 | static void |
| 454 | pingPongPipe_init0( PingPongPipe* pipe, void* hwpipe, void* svcOpaque ) |
| 455 | { |
| 456 | pipe->hwpipe = hwpipe; |
| 457 | pipe->size = PINGPONG_SIZE; |
| 458 | pipe->buffer = malloc(pipe->size); |
| 459 | pipe->pos = 0; |
| 460 | pipe->count = 0; |
| 461 | } |
| 462 | |
| 463 | static void* |
| 464 | pingPongPipe_init( void* hwpipe, void* svcOpaque, const char* args ) |
| 465 | { |
| 466 | PingPongPipe* ppipe; |
| 467 | |
| 468 | D("%s: hwpipe=%p", __FUNCTION__, hwpipe); |
| 469 | ANEW0(ppipe); |
| 470 | pingPongPipe_init0(ppipe, hwpipe, svcOpaque); |
| 471 | return ppipe; |
| 472 | } |
| 473 | |
| 474 | static void |
| 475 | pingPongPipe_close( void* opaque ) |
| 476 | { |
| 477 | PingPongPipe* ppipe = opaque; |
| 478 | |
| 479 | D("%s: hwpipe=%p (pos=%d count=%d size=%d)", __FUNCTION__, |
| 480 | ppipe->hwpipe, ppipe->pos, ppipe->count, ppipe->size); |
| 481 | free(ppipe->buffer); |
| 482 | AFREE(ppipe); |
| 483 | } |
| 484 | |
| 485 | static int |
| 486 | pingPongPipe_sendBuffers( void* opaque, const GoldfishPipeBuffer* buffers, int numBuffers ) |
| 487 | { |
| 488 | PingPongPipe* pipe = opaque; |
| 489 | int ret = 0; |
| 490 | int count; |
| 491 | const GoldfishPipeBuffer* buff = buffers; |
| 492 | const GoldfishPipeBuffer* buffEnd = buff + numBuffers; |
| 493 | |
| 494 | count = 0; |
| 495 | for ( ; buff < buffEnd; buff++ ) |
| 496 | count += buff->size; |
| 497 | |
| 498 | /* Do we need to grow the pingpong buffer? */ |
| 499 | while (count > pipe->size - pipe->count) { |
| 500 | size_t newsize = pipe->size*2; |
| 501 | uint8_t* newbuff = realloc(pipe->buffer, newsize); |
| 502 | int wpos = pipe->pos + pipe->count; |
| 503 | if (newbuff == NULL) { |
| 504 | break; |
| 505 | } |
| 506 | if (wpos > pipe->size) { |
| 507 | wpos -= pipe->size; |
| 508 | memcpy(newbuff + pipe->size, newbuff, wpos); |
| 509 | } |
| 510 | pipe->buffer = newbuff; |
| 511 | pipe->size = newsize; |
| 512 | D("pingpong buffer is now %d bytes", newsize); |
| 513 | } |
| 514 | |
| 515 | for ( buff = buffers; buff < buffEnd; buff++ ) { |
| 516 | int avail = pipe->size - pipe->count; |
| 517 | if (avail <= 0) { |
| 518 | if (ret == 0) |
| 519 | ret = PIPE_ERROR_AGAIN; |
| 520 | break; |
| 521 | } |
| 522 | if (avail > buff->size) { |
| 523 | avail = buff->size; |
| 524 | } |
| 525 | |
| 526 | int wpos = pipe->pos + pipe->count; |
| 527 | if (wpos >= pipe->size) { |
| 528 | wpos -= pipe->size; |
| 529 | } |
| 530 | if (wpos + avail <= pipe->size) { |
| 531 | memcpy(pipe->buffer + wpos, buff->data, avail); |
| 532 | } else { |
| 533 | int avail2 = pipe->size - wpos; |
| 534 | memcpy(pipe->buffer + wpos, buff->data, avail2); |
| 535 | memcpy(pipe->buffer, buff->data + avail2, avail - avail2); |
| 536 | } |
| 537 | pipe->count += avail; |
| 538 | ret += avail; |
| 539 | } |
| 540 | |
| 541 | /* Wake up any waiting readers if we wrote something */ |
| 542 | if (pipe->count > 0 && (pipe->flags & PIPE_WAKE_READ)) { |
| 543 | goldfish_pipe_wake(pipe->hwpipe, PIPE_WAKE_READ); |
| 544 | } |
| 545 | |
| 546 | return ret; |
| 547 | } |
| 548 | |
| 549 | static int |
| 550 | pingPongPipe_recvBuffers( void* opaque, GoldfishPipeBuffer* buffers, int numBuffers ) |
| 551 | { |
| 552 | PingPongPipe* pipe = opaque; |
| 553 | int ret = 0; |
| 554 | |
| 555 | while (numBuffers > 0) { |
| 556 | int avail = pipe->count; |
| 557 | if (avail <= 0) { |
| 558 | if (ret == 0) |
| 559 | ret = PIPE_ERROR_AGAIN; |
| 560 | break; |
| 561 | } |
| 562 | if (avail > buffers[0].size) { |
| 563 | avail = buffers[0].size; |
| 564 | } |
| 565 | |
| 566 | int rpos = pipe->pos; |
| 567 | |
| 568 | if (rpos + avail <= pipe->size) { |
| 569 | memcpy(buffers[0].data, pipe->buffer + rpos, avail); |
| 570 | } else { |
| 571 | int avail2 = pipe->size - rpos; |
| 572 | memcpy(buffers[0].data, pipe->buffer + rpos, avail2); |
| 573 | memcpy(buffers[0].data + avail2, pipe->buffer, avail - avail2); |
| 574 | } |
| 575 | pipe->count -= avail; |
| 576 | pipe->pos += avail; |
| 577 | if (pipe->pos >= pipe->size) { |
| 578 | pipe->pos -= pipe->size; |
| 579 | } |
| 580 | ret += avail; |
| 581 | numBuffers--; |
| 582 | buffers++; |
| 583 | } |
| 584 | |
| 585 | /* Wake up any waiting readers if we wrote something */ |
| 586 | if (pipe->count < PINGPONG_SIZE && (pipe->flags & PIPE_WAKE_WRITE)) { |
| 587 | goldfish_pipe_wake(pipe->hwpipe, PIPE_WAKE_WRITE); |
| 588 | } |
| 589 | |
| 590 | return ret; |
| 591 | } |
| 592 | |
| 593 | static unsigned |
| 594 | pingPongPipe_poll( void* opaque ) |
| 595 | { |
| 596 | PingPongPipe* pipe = opaque; |
| 597 | unsigned ret = 0; |
| 598 | |
| 599 | if (pipe->count < pipe->size) |
| 600 | ret |= PIPE_WAKE_WRITE; |
| 601 | |
| 602 | if (pipe->count > 0) |
| 603 | ret |= PIPE_WAKE_READ; |
| 604 | |
| 605 | return ret; |
| 606 | } |
| 607 | |
| 608 | static void |
| 609 | pingPongPipe_wakeOn( void* opaque, int flags ) |
| 610 | { |
| 611 | PingPongPipe* pipe = opaque; |
| 612 | pipe->flags |= (unsigned)flags; |
| 613 | } |
| 614 | |
| 615 | static const GoldfishPipeFuncs pingPongPipe_funcs = { |
| 616 | pingPongPipe_init, |
| 617 | pingPongPipe_close, |
| 618 | pingPongPipe_sendBuffers, |
| 619 | pingPongPipe_recvBuffers, |
| 620 | pingPongPipe_poll, |
| 621 | pingPongPipe_wakeOn, |
| 622 | }; |
| 623 | |
| 624 | #endif /* DEBUG_PINGPONG_PIPE */ |
| 625 | |
| 626 | /*********************************************************************** |
| 627 | *********************************************************************** |
| 628 | ***** |
| 629 | ***** T H R O T T L E P I P E S |
| 630 | ***** |
| 631 | *****/ |
| 632 | |
| 633 | /* Similar to PingPongPipe, but will throttle the bandwidth to test |
| 634 | * blocking I/O. |
| 635 | */ |
| 636 | |
| 637 | #ifdef DEBUG_THROTTLE_PIPE |
| 638 | |
| 639 | typedef struct { |
| 640 | PingPongPipe pingpong; |
| 641 | double sendRate; |
| 642 | int64_t sendExpiration; |
| 643 | double recvRate; |
| 644 | int64_t recvExpiration; |
| 645 | QEMUTimer* timer; |
| 646 | } ThrottlePipe; |
| 647 | |
| 648 | /* forward declaration */ |
| 649 | static void throttlePipe_timerFunc( void* opaque ); |
| 650 | |
| 651 | static void* |
| 652 | throttlePipe_init( void* hwpipe, void* svcOpaque, const char* args ) |
| 653 | { |
| 654 | ThrottlePipe* pipe; |
| 655 | |
| 656 | ANEW0(pipe); |
| 657 | pingPongPipe_init0(&pipe->pingpong, hwpipe, svcOpaque); |
| 658 | pipe->timer = qemu_new_timer(vm_clock, throttlePipe_timerFunc, pipe); |
| 659 | /* For now, limit to 500 KB/s in both directions */ |
| 660 | pipe->sendRate = 1e9 / (500*1024*8); |
| 661 | pipe->recvRate = pipe->sendRate; |
| 662 | return pipe; |
| 663 | } |
| 664 | |
| 665 | static void |
| 666 | throttlePipe_close( void* opaque ) |
| 667 | { |
| 668 | ThrottlePipe* pipe = opaque; |
| 669 | |
| 670 | qemu_del_timer(pipe->timer); |
| 671 | qemu_free_timer(pipe->timer); |
| 672 | pingPongPipe_close(&pipe->pingpong); |
| 673 | } |
| 674 | |
| 675 | static void |
| 676 | throttlePipe_rearm( ThrottlePipe* pipe ) |
| 677 | { |
| 678 | int64_t minExpiration = 0; |
| 679 | |
| 680 | DD("%s: sendExpiration=%lld recvExpiration=%lld\n", __FUNCTION__, pipe->sendExpiration, pipe->recvExpiration); |
| 681 | |
| 682 | if (pipe->sendExpiration) { |
| 683 | if (minExpiration == 0 || pipe->sendExpiration < minExpiration) |
| 684 | minExpiration = pipe->sendExpiration; |
| 685 | } |
| 686 | |
| 687 | if (pipe->recvExpiration) { |
| 688 | if (minExpiration == 0 || pipe->recvExpiration < minExpiration) |
| 689 | minExpiration = pipe->recvExpiration; |
| 690 | } |
| 691 | |
| 692 | if (minExpiration != 0) { |
| 693 | DD("%s: Arming for %lld\n", __FUNCTION__, minExpiration); |
| 694 | qemu_mod_timer(pipe->timer, minExpiration); |
| 695 | } |
| 696 | } |
| 697 | |
| 698 | static void |
| 699 | throttlePipe_timerFunc( void* opaque ) |
| 700 | { |
| 701 | ThrottlePipe* pipe = opaque; |
| 702 | int64_t now = qemu_get_clock_ns(vm_clock); |
| 703 | |
| 704 | DD("%s: TICK! now=%lld sendExpiration=%lld recvExpiration=%lld\n", |
| 705 | __FUNCTION__, now, pipe->sendExpiration, pipe->recvExpiration); |
| 706 | |
| 707 | /* Timer has expired, signal wake up if needed */ |
| 708 | int flags = 0; |
| 709 | |
| 710 | if (pipe->sendExpiration && now > pipe->sendExpiration) { |
| 711 | flags |= PIPE_WAKE_WRITE; |
| 712 | pipe->sendExpiration = 0; |
| 713 | } |
| 714 | if (pipe->recvExpiration && now > pipe->recvExpiration) { |
| 715 | flags |= PIPE_WAKE_READ; |
| 716 | pipe->recvExpiration = 0; |
| 717 | } |
| 718 | flags &= pipe->pingpong.flags; |
| 719 | if (flags != 0) { |
| 720 | DD("%s: WAKE %d\n", __FUNCTION__, flags); |
| 721 | goldfish_pipe_wake(pipe->pingpong.hwpipe, flags); |
| 722 | } |
| 723 | |
| 724 | throttlePipe_rearm(pipe); |
| 725 | } |
| 726 | |
| 727 | static int |
| 728 | throttlePipe_sendBuffers( void* opaque, const GoldfishPipeBuffer* buffers, int numBuffers ) |
| 729 | { |
| 730 | ThrottlePipe* pipe = opaque; |
| 731 | int ret; |
| 732 | |
| 733 | if (pipe->sendExpiration > 0) { |
| 734 | return PIPE_ERROR_AGAIN; |
| 735 | } |
| 736 | |
| 737 | ret = pingPongPipe_sendBuffers(&pipe->pingpong, buffers, numBuffers); |
| 738 | if (ret > 0) { |
| 739 | /* Compute next send expiration time */ |
| 740 | pipe->sendExpiration = qemu_get_clock_ns(vm_clock) + ret*pipe->sendRate; |
| 741 | throttlePipe_rearm(pipe); |
| 742 | } |
| 743 | return ret; |
| 744 | } |
| 745 | |
| 746 | static int |
| 747 | throttlePipe_recvBuffers( void* opaque, GoldfishPipeBuffer* buffers, int numBuffers ) |
| 748 | { |
| 749 | ThrottlePipe* pipe = opaque; |
| 750 | int ret; |
| 751 | |
| 752 | if (pipe->recvExpiration > 0) { |
| 753 | return PIPE_ERROR_AGAIN; |
| 754 | } |
| 755 | |
| 756 | ret = pingPongPipe_recvBuffers(&pipe->pingpong, buffers, numBuffers); |
| 757 | if (ret > 0) { |
| 758 | pipe->recvExpiration = qemu_get_clock_ns(vm_clock) + ret*pipe->recvRate; |
| 759 | throttlePipe_rearm(pipe); |
| 760 | } |
| 761 | return ret; |
| 762 | } |
| 763 | |
| 764 | static unsigned |
| 765 | throttlePipe_poll( void* opaque ) |
| 766 | { |
| 767 | ThrottlePipe* pipe = opaque; |
| 768 | unsigned ret = pingPongPipe_poll(&pipe->pingpong); |
| 769 | |
| 770 | if (pipe->sendExpiration > 0) |
| 771 | ret &= ~PIPE_WAKE_WRITE; |
| 772 | |
| 773 | if (pipe->recvExpiration > 0) |
| 774 | ret &= ~PIPE_WAKE_READ; |
| 775 | |
| 776 | return ret; |
| 777 | } |
| 778 | |
| 779 | static void |
| 780 | throttlePipe_wakeOn( void* opaque, int flags ) |
| 781 | { |
| 782 | ThrottlePipe* pipe = opaque; |
| 783 | pingPongPipe_wakeOn(&pipe->pingpong, flags); |
| 784 | } |
| 785 | |
| 786 | static const GoldfishPipeFuncs throttlePipe_funcs = { |
| 787 | throttlePipe_init, |
| 788 | throttlePipe_close, |
| 789 | throttlePipe_sendBuffers, |
| 790 | throttlePipe_recvBuffers, |
| 791 | throttlePipe_poll, |
| 792 | throttlePipe_wakeOn, |
| 793 | }; |
| 794 | |
| 795 | #endif /* DEBUG_THROTTLE_PIPE */ |
| 796 | |
| 797 | /*********************************************************************** |
| 798 | *********************************************************************** |
| 799 | ***** |
| 800 | ***** G O L D F I S H P I P E D E V I C E |
| 801 | ***** |
| 802 | *****/ |
| 803 | |
| 804 | struct PipeDevice { |
| 805 | struct goldfish_device dev; |
| 806 | |
| 807 | /* the list of all pipes */ |
| 808 | Pipe* pipes; |
| 809 | |
| 810 | /* the list of signalled pipes */ |
| 811 | Pipe* signaled_pipes; |
| 812 | |
| 813 | /* i/o registers */ |
| 814 | uint32_t address; |
| 815 | uint32_t size; |
| 816 | uint32_t status; |
| 817 | uint32_t channel; |
| 818 | uint32_t wakes; |
| 819 | }; |
| 820 | |
| 821 | |
| 822 | static void |
| 823 | pipeDevice_doCommand( PipeDevice* dev, uint32_t command ) |
| 824 | { |
| 825 | Pipe** lookup = pipe_list_findp_channel(&dev->pipes, dev->channel); |
| 826 | Pipe* pipe = *lookup; |
| 827 | CPUState* env = cpu_single_env; |
| 828 | |
| 829 | /* Check that we're referring a known pipe channel */ |
| 830 | if (command != PIPE_CMD_OPEN && pipe == NULL) { |
| 831 | dev->status = PIPE_ERROR_INVAL; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 832 | return; |
| 833 | } |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 834 | |
| 835 | /* If the pipe is closed by the host, return an error */ |
| 836 | if (pipe != NULL && pipe->closed && command != PIPE_CMD_CLOSE) { |
| 837 | dev->status = PIPE_ERROR_IO; |
| 838 | return; |
| 839 | } |
| 840 | |
| 841 | switch (command) { |
| 842 | case PIPE_CMD_OPEN: |
| 843 | DD("%s: CMD_OPEN channel=0x%x", __FUNCTION__, dev->channel); |
| 844 | if (pipe != NULL) { |
| 845 | dev->status = PIPE_ERROR_INVAL; |
| 846 | break; |
| 847 | } |
| 848 | pipe = pipe_new(dev->channel, dev); |
| 849 | pipe->next = dev->pipes; |
| 850 | dev->pipes = pipe; |
| 851 | dev->status = 0; |
| 852 | break; |
| 853 | |
| 854 | case PIPE_CMD_CLOSE: |
| 855 | DD("%s: CMD_CLOSE channel=0x%x", __FUNCTION__, dev->channel); |
| 856 | /* Remove from device's lists */ |
| 857 | *lookup = pipe->next; |
| 858 | pipe->next = NULL; |
| 859 | pipe_list_remove_waked(&dev->signaled_pipes, pipe); |
| 860 | /* Call close callback */ |
| 861 | if (pipe->funcs->close) { |
| 862 | pipe->funcs->close(pipe->opaque); |
| 863 | } |
| 864 | /* Free stuff */ |
| 865 | AFREE(pipe); |
| 866 | break; |
| 867 | |
| 868 | case PIPE_CMD_POLL: |
| 869 | dev->status = pipe->funcs->poll(pipe->opaque); |
| 870 | DD("%s: CMD_POLL > status=%d", __FUNCTION__, dev->status); |
| 871 | break; |
| 872 | |
| 873 | case PIPE_CMD_READ_BUFFER: { |
| 874 | /* Translate virtual address into physical one, into emulator memory. */ |
| 875 | GoldfishPipeBuffer buffer; |
| 876 | uint32_t address = dev->address; |
| 877 | uint32_t page = address & TARGET_PAGE_MASK; |
| 878 | target_phys_addr_t phys = cpu_get_phys_page_debug(env, page); |
| 879 | buffer.data = qemu_get_ram_ptr(phys) + (address - page); |
| 880 | buffer.size = dev->size; |
| 881 | dev->status = pipe->funcs->recvBuffers(pipe->opaque, &buffer, 1); |
| 882 | DD("%s: CMD_READ_BUFFER channel=0x%x address=0x%08x size=%d > status=%d", |
| 883 | __FUNCTION__, dev->channel, dev->address, dev->size, dev->status); |
| 884 | break; |
| 885 | } |
| 886 | |
| 887 | case PIPE_CMD_WRITE_BUFFER: { |
| 888 | /* Translate virtual address into physical one, into emulator memory. */ |
| 889 | GoldfishPipeBuffer buffer; |
| 890 | uint32_t address = dev->address; |
| 891 | uint32_t page = address & TARGET_PAGE_MASK; |
| 892 | target_phys_addr_t phys = cpu_get_phys_page_debug(env, page); |
| 893 | buffer.data = qemu_get_ram_ptr(phys) + (address - page); |
| 894 | buffer.size = dev->size; |
| 895 | dev->status = pipe->funcs->sendBuffers(pipe->opaque, &buffer, 1); |
| 896 | DD("%s: CMD_WRITE_BUFFER channel=0x%x address=0x%08x size=%d > status=%d", |
| 897 | __FUNCTION__, dev->channel, dev->address, dev->size, dev->status); |
| 898 | break; |
| 899 | } |
| 900 | |
| 901 | case PIPE_CMD_WAKE_ON_READ: |
| 902 | DD("%s: CMD_WAKE_ON_READ channel=0x%x", __FUNCTION__, dev->channel); |
| 903 | if ((pipe->wanted & PIPE_WAKE_READ) == 0) { |
| 904 | pipe->wanted |= PIPE_WAKE_READ; |
| 905 | pipe->funcs->wakeOn(pipe->opaque, pipe->wanted); |
| 906 | } |
| 907 | dev->status = 0; |
| 908 | break; |
| 909 | |
| 910 | case PIPE_CMD_WAKE_ON_WRITE: |
| 911 | DD("%s: CMD_WAKE_ON_WRITE channel=0x%x", __FUNCTION__, dev->channel); |
| 912 | if ((pipe->wanted & PIPE_WAKE_WRITE) == 0) { |
| 913 | pipe->wanted |= PIPE_WAKE_WRITE; |
| 914 | pipe->funcs->wakeOn(pipe->opaque, pipe->wanted); |
| 915 | } |
| 916 | dev->status = 0; |
| 917 | break; |
| 918 | |
| 919 | default: |
| 920 | D("%s: command=%d (0x%x)\n", __FUNCTION__, command, command); |
| 921 | } |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 922 | } |
| 923 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 924 | static void pipe_dev_write(void *opaque, target_phys_addr_t offset, uint32_t value) |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 925 | { |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 926 | PipeDevice *s = (PipeDevice *)opaque; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 927 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 928 | switch (offset) { |
| 929 | case PIPE_REG_COMMAND: |
| 930 | DR("%s: command=%d (0x%x)", __FUNCTION__, value, value); |
| 931 | pipeDevice_doCommand(s, value); |
| 932 | break; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 933 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 934 | case PIPE_REG_SIZE: |
| 935 | DR("%s: size=%d (0x%x)", __FUNCTION__, value, value); |
| 936 | s->size = value; |
| 937 | break; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 938 | |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 939 | case PIPE_REG_ADDRESS: |
| 940 | DR("%s: address=%d (0x%x)", __FUNCTION__, value, value); |
| 941 | s->address = value; |
| 942 | break; |
| 943 | |
| 944 | case PIPE_REG_CHANNEL: |
| 945 | DR("%s: channel=%d (0x%x)", __FUNCTION__, value, value); |
| 946 | s->channel = value; |
| 947 | break; |
| 948 | |
| 949 | default: |
| 950 | D("%s: offset=%d (0x%x) value=%d (0x%x)\n", __FUNCTION__, offset, |
| 951 | offset, value, value); |
| 952 | break; |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 953 | } |
David 'Digit' Turner | d4d688e | 2011-04-26 18:09:17 +0200 | [diff] [blame] | 954 | } |
| 955 | |
| 956 | /* I/O read */ |
| 957 | static uint32_t pipe_dev_read(void *opaque, target_phys_addr_t offset) |
| 958 | { |
| 959 | PipeDevice *dev = (PipeDevice *)opaque; |
| 960 | |
| 961 | switch (offset) { |
| 962 | case PIPE_REG_STATUS: |
| 963 | DR("%s: REG_STATUS status=%d (0x%x)", __FUNCTION__, dev->status, dev->status); |
| 964 | return dev->status; |
| 965 | |
| 966 | case PIPE_REG_CHANNEL: |
| 967 | if (dev->signaled_pipes != NULL) { |
| 968 | Pipe* pipe = dev->signaled_pipes; |
| 969 | DR("%s: channel=0x%x wanted=%d", __FUNCTION__, |
| 970 | pipe->channel, pipe->wanted); |
| 971 | dev->wakes = pipe->wanted; |
| 972 | pipe->wanted = 0; |
| 973 | dev->signaled_pipes = pipe->next_waked; |
| 974 | pipe->next_waked = NULL; |
| 975 | if (dev->signaled_pipes == NULL) { |
| 976 | goldfish_device_set_irq(&dev->dev, 0, 0); |
| 977 | DD("%s: lowering IRQ", __FUNCTION__); |
| 978 | } |
| 979 | return pipe->channel; |
| 980 | } |
| 981 | DR("%s: no signaled channels", __FUNCTION__); |
| 982 | return 0; |
| 983 | |
| 984 | case PIPE_REG_WAKES: |
| 985 | DR("%s: wakes %d", __FUNCTION__, dev->wakes); |
| 986 | return dev->wakes; |
| 987 | |
| 988 | default: |
| 989 | D("%s: offset=%d (0x%x)\n", __FUNCTION__, offset, offset); |
| 990 | } |
| 991 | return 0; |
| 992 | } |
| 993 | |
| 994 | static CPUReadMemoryFunc *pipe_dev_readfn[] = { |
| 995 | pipe_dev_read, |
| 996 | pipe_dev_read, |
| 997 | pipe_dev_read |
| 998 | }; |
| 999 | |
| 1000 | static CPUWriteMemoryFunc *pipe_dev_writefn[] = { |
| 1001 | pipe_dev_write, |
| 1002 | pipe_dev_write, |
| 1003 | pipe_dev_write |
| 1004 | }; |
| 1005 | |
| 1006 | /* initialize the trace device */ |
| 1007 | void pipe_dev_init() |
| 1008 | { |
| 1009 | PipeDevice *s; |
| 1010 | |
| 1011 | s = (PipeDevice *) qemu_mallocz(sizeof(*s)); |
| 1012 | |
| 1013 | s->dev.name = "qemu_pipe"; |
| 1014 | s->dev.id = -1; |
| 1015 | s->dev.base = 0; // will be allocated dynamically |
| 1016 | s->dev.size = 0x2000; |
| 1017 | s->dev.irq = 0; |
| 1018 | s->dev.irq_count = 1; |
| 1019 | |
| 1020 | goldfish_device_add(&s->dev, pipe_dev_readfn, pipe_dev_writefn, s); |
| 1021 | |
| 1022 | #if DEBUG_ZERO_PIPE |
| 1023 | goldfish_pipe_add_type("zero", NULL, &zeroPipe_funcs); |
| 1024 | #endif |
| 1025 | #if DEBUG_PINGPONG_PIPE |
| 1026 | goldfish_pipe_add_type("pingpong", NULL, &pingPongPipe_funcs); |
| 1027 | #endif |
| 1028 | #if DEBUG_THROTTLE_PIPE |
| 1029 | goldfish_pipe_add_type("throttle", NULL, &throttlePipe_funcs); |
| 1030 | #endif |
| 1031 | } |
| 1032 | |
| 1033 | void |
| 1034 | goldfish_pipe_wake( void* hwpipe, unsigned flags ) |
| 1035 | { |
| 1036 | Pipe* pipe = hwpipe; |
| 1037 | Pipe** lookup; |
| 1038 | PipeDevice* dev = pipe->device; |
| 1039 | |
| 1040 | DD("%s: channel=0x%x flags=%d", __FUNCTION__, pipe->channel, flags); |
| 1041 | |
| 1042 | /* If not already there, add to the list of signaled pipes */ |
| 1043 | lookup = pipe_list_findp_waked(&dev->signaled_pipes, pipe); |
| 1044 | if (!*lookup) { |
| 1045 | pipe->next_waked = dev->signaled_pipes; |
| 1046 | dev->signaled_pipes = pipe; |
| 1047 | } |
| 1048 | pipe->wanted |= (unsigned)flags; |
| 1049 | |
| 1050 | /* Raise IRQ to indicate there are items on our list ! */ |
| 1051 | goldfish_device_set_irq(&dev->dev, 0, 1); |
| 1052 | DD("%s: raising IRQ", __FUNCTION__); |
| 1053 | } |
| 1054 | |
| 1055 | void |
| 1056 | goldfish_pipe_close( void* hwpipe ) |
| 1057 | { |
| 1058 | Pipe* pipe = hwpipe; |
| 1059 | |
| 1060 | D("%s: channel=0x%x (closed=%d)", __FUNCTION__, pipe->channel, pipe->closed); |
| 1061 | |
| 1062 | if (!pipe->closed) { |
| 1063 | pipe->closed = 1; |
| 1064 | goldfish_pipe_wake( hwpipe, PIPE_WAKE_CLOSED ); |
| 1065 | } |
David 'Digit' Turner | 89217f5 | 2011-03-21 17:51:03 +0100 | [diff] [blame] | 1066 | } |