Subversion Repositories HelenOS-historic

Rev

Rev 1591 | Rev 1625 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 1591 Rev 1595
Line 154... Line 154...
154 
 
 154 
 
155 
/** Unregister task from irq */
 155 
/** Unregister task from irq */
156 
void ipc_irq_unregister(answerbox_t *box, int irq)
 156 
void ipc_irq_unregister(answerbox_t *box, int irq)
157 
{
 157 
{
158 
    ipl_t ipl;
 158 
    ipl_t ipl;
- 
 
 159 
    int mq = irq + IPC_IRQ_RESERVED_VIRTUAL;
159 
 
 160 
 
160 
    ipl = interrupts_disable();
 161 
    ipl = interrupts_disable();
161 
    spinlock_lock(&irq_conns[irq].lock);
 162 
    spinlock_lock(&irq_conns[mq].lock);
162 
    if (irq_conns[irq].box == box) {
 163 
    if (irq_conns[mq].box == box) {
163 
        irq_conns[irq].box = NULL;
 164 
        irq_conns[mq].box = NULL;
164 
        code_free(irq_conns[irq].code);
 165 
        code_free(irq_conns[mq].code);
165 
        irq_conns[irq].code = NULL;
 166 
        irq_conns[mq].code = NULL;
166 
    }
 167 
    }
167 
 
 168 
 
168 
    spinlock_unlock(&irq_conns[irq].lock);
 169 
    spinlock_unlock(&irq_conns[mq].lock);
169 
    interrupts_restore(ipl);
 170 
    interrupts_restore(ipl);
170 
}
 171 
}
171 
 
 172 
 
172 
/** Register an answerbox as a receiving end of interrupts notifications */
 173 
/** Register an answerbox as a receiving end of interrupts notifications */
173 
int ipc_irq_register(answerbox_t *box, int irq, irq_code_t *ucode)
 174 
int ipc_irq_register(answerbox_t *box, int irq, irq_code_t *ucode)
174 
{
 175 
{
175 
    ipl_t ipl;
 176 
    ipl_t ipl;
176 
    irq_code_t *code;
 177 
    irq_code_t *code;
- 
 
 178 
    int mq = irq + IPC_IRQ_RESERVED_VIRTUAL;
177 
 
 179 
 
178 
    ASSERT(irq_conns);
 180 
    ASSERT(irq_conns);
179 
 
 181 
 
180 
    if (ucode) {
 182 
    if (ucode) {
181 
        code = code_from_uspace(ucode);
 183 
        code = code_from_uspace(ucode);
Line 183... Line 185...
183 
            return EBADMEM;
 185 
            return EBADMEM;
184 
    } else
 186 
    } else
185 
        code = NULL;
 187 
        code = NULL;
186 
 
 188 
 
187 
    ipl = interrupts_disable();
 189 
    ipl = interrupts_disable();
188 
    spinlock_lock(&irq_conns[irq].lock);
 190 
    spinlock_lock(&irq_conns[mq].lock);
189 
 
 191 
 
190 
    if (irq_conns[irq].box) {
 192 
    if (irq_conns[mq].box) {
191 
        spinlock_unlock(&irq_conns[irq].lock);
 193 
        spinlock_unlock(&irq_conns[mq].lock);
192 
        interrupts_restore(ipl);
 194 
        interrupts_restore(ipl);
193 
        code_free(code);
 195 
        code_free(code);
194 
        return EEXISTS;
 196 
        return EEXISTS;
195 
    }
 197 
    }
196 
    irq_conns[irq].box = box;
 198 
    irq_conns[mq].box = box;
197 
    irq_conns[irq].code = code;
 199 
    irq_conns[mq].code = code;
198 
    atomic_set(&irq_conns[irq].counter, 0);
 200 
    atomic_set(&irq_conns[mq].counter, 0);
199 
    spinlock_unlock(&irq_conns[irq].lock);
 201 
    spinlock_unlock(&irq_conns[mq].lock);
200 
    interrupts_restore(ipl);
 202 
    interrupts_restore(ipl);
201 
 
 203 
 
202 
    return 0;
 204 
    return 0;
203 
}
 205 
}
204 
 
 206 
 
- 
 
 207 
/** Add call to proper answerbox queue
- 
 
 208 
 *
- 
 
 209 
 * Assume irq_conns[mq].lock is locked */
- 
 
 210 
static void send_call(int mq, call_t *call)
- 
 
 211 
{
- 
 
 212 
    spinlock_lock(&irq_conns[mq].box->irq_lock);
- 
 
 213 
    list_append(&call->link, &irq_conns[mq].box->irq_notifs);
- 
 
 214 
    spinlock_unlock(&irq_conns[mq].box->irq_lock);
- 
 
 215 
       
- 
 
 216 
    waitq_wakeup(&irq_conns[mq].box->wq, 0);
- 
 
 217 
}
- 
 
 218 
 
- 
 
 219 
/** Send notification message
- 
 
 220 
 *
- 
 
 221 
 */
- 
 
 222 
void ipc_irq_send_msg(int irq, __native a2, __native a3)
- 
 
 223 
{
- 
 
 224 
    call_t *call;
- 
 
 225 
    int mq = irq + IPC_IRQ_RESERVED_VIRTUAL;
- 
 
 226 
 
- 
 
 227 
    spinlock_lock(&irq_conns[mq].lock);
- 
 
 228 
 
- 
 
 229 
    if (irq_conns[mq].box) {
- 
 
 230 
        call = ipc_call_alloc(FRAME_ATOMIC);
- 
 
 231 
        if (!call) {
- 
 
 232 
            spinlock_unlock(&irq_conns[mq].lock);
- 
 
 233 
            return;
- 
 
 234 
        }
- 
 
 235 
        call->flags |= IPC_CALL_NOTIF;
- 
 
 236 
        IPC_SET_METHOD(call->data, IPC_M_INTERRUPT);
- 
 
 237 
        IPC_SET_ARG1(call->data, irq);
- 
 
 238 
        IPC_SET_ARG2(call->data, a2);
- 
 
 239 
        IPC_SET_ARG3(call->data, a3);
- 
 
 240 
       
- 
 
 241 
        send_call(mq, call);
- 
 
 242 
    }
- 
 
 243 
    spinlock_unlock(&irq_conns[mq].lock);
- 
 
 244 
}
- 
 
 245 
 
205 
/** Notify process that an irq had happend
 246 
/** Notify process that an irq had happend
206 
 *
 247 
 *
207 
 * We expect interrupts to be disabled
 248 
 * We expect interrupts to be disabled
208 
 */
 249 
 */
209 
void ipc_irq_send_notif(int irq)
 250 
void ipc_irq_send_notif(int irq)
210 
{
 251 
{
211 
    call_t *call;
 252 
    call_t *call;
- 
 
 253 
    int mq = irq + IPC_IRQ_RESERVED_VIRTUAL;
212 
 
 254 
 
213 
    ASSERT(irq_conns);
 255 
    ASSERT(irq_conns);
214 
    spinlock_lock(&irq_conns[irq].lock);
 256 
    spinlock_lock(&irq_conns[mq].lock);
215 
 
 257 
 
216 
    if (irq_conns[irq].box) {
 258 
    if (irq_conns[mq].box) {
217 
        call = ipc_call_alloc(FRAME_ATOMIC);
 259 
        call = ipc_call_alloc(FRAME_ATOMIC);
218 
        if (!call) {
 260 
        if (!call) {
219 
            spinlock_unlock(&irq_conns[irq].lock);
 261 
            spinlock_unlock(&irq_conns[mq].lock);
220 
            return;
 262 
            return;
221 
        }
 263 
        }
222 
        call->flags |= IPC_CALL_NOTIF;
 264 
        call->flags |= IPC_CALL_NOTIF;
223 
        IPC_SET_METHOD(call->data, IPC_M_INTERRUPT);
 265 
        IPC_SET_METHOD(call->data, IPC_M_INTERRUPT);
224 
        IPC_SET_ARG1(call->data, irq);
 266 
        IPC_SET_ARG1(call->data, irq);
225 
        IPC_SET_ARG3(call->data, atomic_preinc(&irq_conns[irq].counter));
 267 
        IPC_SET_ARG3(call->data, atomic_preinc(&irq_conns[mq].counter));
226 
 
 268 
 
227 
        /* Execute code to handle irq */
 269 
        /* Execute code to handle irq */
228 
        code_execute(call, irq_conns[irq].code);
 270 
        code_execute(call, irq_conns[mq].code);
229 
 
 271 
       
230 
        spinlock_lock(&irq_conns[irq].box->irq_lock);
 272 
        send_call(mq, call);
231 
        list_append(&call->link, &irq_conns[irq].box->irq_notifs);
 - 
 
232 
        spinlock_unlock(&irq_conns[irq].box->irq_lock);
 - 
 
233 
 
 - 
 
234 
        waitq_wakeup(&irq_conns[irq].box->wq, 0);
 - 
 
235 
    }
 273 
    }
236 
       
 274 
       
237 
    spinlock_unlock(&irq_conns[irq].lock);
 275 
    spinlock_unlock(&irq_conns[mq].lock);
238 
}
 276 
}
239 
 
 277 
 
240 
 
 278 
 
241 
/** Initialize table of interrupt handlers */
 279 
/** Initialize table of interrupt handlers
- 
 
 280 
 *
- 
 
 281 
 * @param irqcount Count of required hardware IRQs to be supported
- 
 
 282 
 */
242 
void ipc_irq_make_table(int irqcount)
 283 
void ipc_irq_make_table(int irqcount)
243 
{
 284 
{
244 
    int i;
 285 
    int i;
245 
 
 286 
 
- 
 
 287 
    irqcount +=  IPC_IRQ_RESERVED_VIRTUAL;
- 
 
 288 
 
246 
    irq_conns_size = irqcount;
 289 
    irq_conns_size = irqcount;
247 
    irq_conns = malloc(irqcount * (sizeof(*irq_conns)), 0);
 290 
    irq_conns = malloc(irqcount * (sizeof(*irq_conns)), 0);
248 
    for (i=0; i < irqcount; i++) {
 291 
    for (i=0; i < irqcount; i++) {
249 
        spinlock_initialize(&irq_conns[i].lock, "irq_ipc_lock");
 292 
        spinlock_initialize(&irq_conns[i].lock, "irq_ipc_lock");
250 
        irq_conns[i].box = NULL;
 293 
        irq_conns[i].box = NULL;