Changes in uspace/drv/char/msim-con/msim-con.c [7a6065c:92232331] in mainline

File:

• uspace/drv/char/msim-con/msim-con.c (modified) (5 diffs)

uspace/drv/char/msim-con/msim-con.c

@@ -37 +37 @@
 #include <ddi.h>
 #include <errno.h>
-#include <io/chardev_srv.h>
+#include <ipc/char.h>
 
 #include "msim-con.h"
 
 static void msim_con_connection(ipc_callid_t, ipc_call_t *, void *);
-
-static int msim_con_read(chardev_srv_t *, void *, size_t, size_t *);
-static int msim_con_write(chardev_srv_t *, const void *, size_t, size_t *);
-
-static chardev_ops_t msim_con_chardev_ops = {
-        .read = msim_con_read,
-        .write = msim_con_write
-};
 
 static irq_cmd_t msim_cmds_proto[] = {
@@ -66 +58 @@
         msim_con_t *con = (msim_con_t *) arg;
         uint8_t c;
-        int rc;
-
-        fibril_mutex_lock(&con->buf_lock);
 
         c = IPC_GET_ARG2(*call);
-        rc = circ_buf_push(&con->cbuf, &c);
-        if (rc != EOK)
-                ddf_msg(LVL_ERROR, "Buffer overrun");
 
-        fibril_mutex_unlock(&con->buf_lock);
-        fibril_condvar_broadcast(&con->buf_cv);
+        if (con->client_sess != NULL) {
+                async_exch_t *exch = async_exchange_begin(con->client_sess);
+                async_msg_1(exch, CHAR_NOTIF_BYTE, c);
+                async_exchange_end(exch);
+        }
 }
 
@@ -86 +75 @@
         irq_cmd_t *msim_cmds = NULL;
         int rc;
-
-        circ_buf_init(&con->cbuf, con->buf, msim_con_buf_size, 1);
-        fibril_mutex_initialize(&con->buf_lock);
-        fibril_condvar_initialize(&con->buf_cv);
 
         msim_cmds = malloc(sizeof(msim_cmds_proto));
@@ -121 +106 @@
         async_irq_subscribe(res->irq, msim_irq_handler, con, &con->irq_code);
         subscribed = true;
-
-        chardev_srvs_init(&con->cds);
-        con->cds.ops = &msim_con_chardev_ops;
-        con->cds.sarg = con;
 
         rc = ddf_fun_bind(fun);
@@ -159 +140 @@
 }
 
-/** Read from msim console device */
-static int msim_con_read(chardev_srv_t *srv, void *buf, size_t size,
-    size_t *nread)
-{
-        msim_con_t *con = (msim_con_t *) srv->srvs->sarg;
-        size_t p;
-        uint8_t *bp = (uint8_t *) buf;
-        int rc;
-
-        fibril_mutex_lock(&con->buf_lock);
-
-        while (circ_buf_nused(&con->cbuf) == 0)
-                fibril_condvar_wait(&con->buf_cv, &con->buf_lock);
-
-        p = 0;
-        while (p < size) {
-                rc = circ_buf_pop(&con->cbuf, &bp[p]);
-                if (rc != EOK)
-                        break;
-                ++p;
-        }
-
-        fibril_mutex_unlock(&con->buf_lock);
-
-        *nread = p;
-        return EOK;
-}
-
-/** Write to msim console device */
-static int msim_con_write(chardev_srv_t *srv, const void *data, size_t size,
-    size_t *nwr)
-{
-        msim_con_t *con = (msim_con_t *) srv->srvs->sarg;
-        size_t i;
-        uint8_t *dp = (uint8_t *) data;
-
-        for (i = 0; i < size; i++)
-                msim_con_putchar(con, dp[i]); 
-
-        *nwr = size;
-        return EOK;
-}
-
 /** Character device connection handler. */
 static void msim_con_connection(ipc_callid_t iid, ipc_call_t *icall,
     void *arg)
 {
-        msim_con_t *con = (msim_con_t *) ddf_dev_data_get(
-            ddf_fun_get_dev((ddf_fun_t *) arg));
+        msim_con_t *con;
 
-        chardev_conn(iid, icall, &con->cds);
+        /* Answer the IPC_M_CONNECT_ME_TO call. */
+        async_answer_0(iid, EOK);
+
+        con = (msim_con_t *)ddf_dev_data_get(ddf_fun_get_dev((ddf_fun_t *)arg));
+
+        while (true) {
+                ipc_call_t call;
+                ipc_callid_t callid = async_get_call(&call);
+                sysarg_t method = IPC_GET_IMETHOD(call);
+
+                if (!method) {
+                        /* The other side has hung up. */
+                        async_answer_0(callid, EOK);
+                        return;
+                }
+
+                async_sess_t *sess =
+                    async_callback_receive_start(EXCHANGE_SERIALIZE, &call);
+                if (sess != NULL) {
+                        if (con->client_sess == NULL) {
+                                con->client_sess = sess;
+                                async_answer_0(callid, EOK);
+                        } else
+                                async_answer_0(callid, ELIMIT);
+                } else {
+                        switch (method) {
+                        case CHAR_WRITE_BYTE:
+                                ddf_msg(LVL_DEBUG, "Write %" PRIun " to device\n",
+                                    IPC_GET_ARG1(call));
+                                msim_con_putchar(con, (uint8_t) IPC_GET_ARG1(call));
+                                async_answer_0(callid, EOK);
+                                break;
+                        default:
+                                async_answer_0(callid, EINVAL);
+                        }
+                }
+        }
 }