Changeset 30a4301 in mainline for uspace/drv/uhci-hcd/uhci.c

Timestamp:

2011-02-16T22:28:58Z (14 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

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

Children:

2736b13e

Parents:

36a4738

Message:

Use interrupt emulation until real hardware interrupts work

File:

• uspace/drv/uhci-hcd/uhci.c (modified) (3 diffs)

uspace/drv/uhci-hcd/uhci.c

@@ -44 +44 @@
 static void uhci_init_hw(uhci_t *instance);
 
-static int uhci_clean_finished(void *arg);
+static int uhci_interrupt_emulator(void *arg);
 static int uhci_debug_checker(void *arg);
 
@@ -69 +69 @@
         usb_log_debug("Device registers accessible.\n");
 
-        instance->cleaner = fibril_create(uhci_clean_finished, instance);
+        instance->cleaner = fibril_create(uhci_interrupt_emulator, instance);
         fibril_add_ready(instance->cleaner);
 
@@ -189 +189 @@
 }
 /*----------------------------------------------------------------------------*/
-int uhci_clean_finished(void* arg)
-{
-        usb_log_debug("Started cleaning fibril.\n");
+void uhci_interrupt(uhci_t *instance)
+{
+        assert(instance);
+        const uint16_t sts = pio_read_16(&instance->registers->usbsts);
+        if ((sts & (UHCI_STATUS_INTERRUPT | UHCI_STATUS_ERROR_INTERRUPT)) == 0)
+                return;
+        usb_log_debug("UHCI interrupt: %X.\n", sts);
+        transfer_list_check(&instance->transfers_interrupt);
+        transfer_list_check(&instance->transfers_control_slow);
+        transfer_list_check(&instance->transfers_control_full);
+        transfer_list_check(&instance->transfers_bulk_full);
+        pio_write_16(&instance->registers->usbsts, 0xf);
+}
+/*----------------------------------------------------------------------------*/
+int uhci_interrupt_emulator(void* arg)
+{
+        usb_log_debug("Started interrupt emulator.\n");
         uhci_t *instance = (uhci_t*)arg;
         assert(instance);
 
         while(1) {
-                transfer_list_check(&instance->transfers_interrupt);
-                transfer_list_check(&instance->transfers_control_slow);
-                transfer_list_check(&instance->transfers_control_full);
-                transfer_list_check(&instance->transfers_bulk_full);
+                uhci_interrupt(instance);
                 async_usleep(UHCI_CLEANER_TIMEOUT);
         }