Changeset 11a3b5f in mainline

Timestamp:

2013-09-28T21:55:31Z (11 years ago)

Author:

Jan Vesely <jano.vesely@…>

Branches:

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

Children:

0d4b110

Parents:

8064c2f6

Message:

uhci: Move legacy disabling to uhci.c

Location:

uspace/drv/bus/usb/uhci

Files:

• Makefile (modified) (1 diff)
• res.c (deleted)
• res.h (deleted)
• uhci.c (modified) (3 diffs)

uspace/drv/bus/usb/uhci/Makefile

@@ -47 +47 @@
         hc.c \
         main.c \
-        res.c \
         transfer_list.c \
         uhci.c \

uspace/drv/bus/usb/uhci/uhci.c

@@ -38 +38 @@
 #include <ddf/interrupt.h>
 #include <device/hw_res_parsed.h>
+#include <device/pci.h>
+#include <devman.h>
 #include <errno.h>
 #include <stdbool.h>
@@ -52 +54 @@
 #include "uhci.h"
 
-#include "res.h"
 #include "hc.h"
 
@@ -72 +73 @@
         const uint16_t status = IPC_GET_ARG1(*call);
         hc_interrupt(hcd->driver.data, status);
+}
+
+/** Call the PCI driver with a request to clear legacy support register
+ *
+ * @param[in] device Device asking to disable interrupts
+ * @return Error code.
+ */
+static int disable_legacy(ddf_dev_t *device)
+{
+        assert(device);
+
+        async_sess_t *parent_sess = devman_parent_device_connect(
+            EXCHANGE_SERIALIZE, ddf_dev_get_handle(device), IPC_FLAG_BLOCKING);
+        if (!parent_sess)
+                return ENOMEM;
+
+        /* See UHCI design guide page 45 for these values.
+         * Write all WC bits in USB legacy register */
+        const int rc = pci_config_space_write_16(parent_sess, 0xc0, 0xaf00);
+
+        async_hangup(parent_sess);
+        return rc;
 }