Changeset 5960b48 in mainline for uspace/drv/bus/isa/isa.c

Timestamp:

2011-12-25T19:50:03Z (13 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

b1f44b4

Parents:

ee163b3

Message:

isa: Implement interrupt enabling.

File:

• uspace/drv/bus/isa/isa.c (modified) (2 diffs)

uspace/drv/bus/isa/isa.c

@@ -51 +51 @@
 #include <dirent.h>
 #include <fcntl.h>
+#include <ipc/irc.h>
+#include <ipc/services.h>
+#include <sysinfo.h>
+#include <ns.h>
 #include <sys/stat.h>
 
@@ -96 +100 @@
 static bool isa_enable_fun_interrupt(ddf_fun_t *fnode)
 {
-        /* TODO */
-
-        return false;
+        /* This is an old ugly way, copied from pci driver */
+        assert(fnode);
+        isa_fun_t *isa_fun = fnode->driver_data;
+
+        sysarg_t apic;
+        sysarg_t i8259;
+
+        async_sess_t *irc_sess = NULL;
+
+        if (((sysinfo_get_value("apic", &apic) == EOK) && (apic))
+            || ((sysinfo_get_value("i8259", &i8259) == EOK) && (i8259))) {
+                irc_sess = service_connect_blocking(EXCHANGE_SERIALIZE,
+                    SERVICE_IRC, 0, 0);
+        }
+
+        if (!irc_sess)
+                return false;
+
+        assert(isa_fun);
+        const hw_resource_list_t *res = &isa_fun->hw_resources;
+        assert(res);
+        for (size_t i = 0; i < res->count; ++i) {
+                if (res->resources[i].type == INTERRUPT) {
+                        const int irq = res->resources[i].res.interrupt.irq;
+
+                        async_exch_t *exch = async_exchange_begin(irc_sess);
+                        const int rc =
+                            async_req_1_0(exch, IRC_ENABLE_INTERRUPT, irq);
+                        async_exchange_end(exch);
+
+                        if (rc != EOK) {
+                                async_hangup(irc_sess);
+                                return false;
+                        }
+                }
+        }
+
+        async_hangup(irc_sess);
+        return true;
 }