Changes in uspace/drv/uhci-hcd/pci.c [4abc304:a7e2f0d] in mainline

File:

• uspace/drv/uhci-hcd/pci.c (modified) (5 diffs)

uspace/drv/uhci-hcd/pci.c

@@ -40 +40 @@
 
 #include <usb/debug.h>
+#include <pci_dev_iface.h>
 
 #include "pci.h"
@@ -64 +65 @@
 
         int rc;
-
         hw_resource_list_t hw_resources;
         rc = hw_res_get_resource_list(parent_phone, &hw_resources);
@@ -81 +81 @@
         for (i = 0; i < hw_resources.count; i++) {
                 hw_resource_t *res = &hw_resources.resources[i];
-                switch (res->type) {
-                        case INTERRUPT:
-                                irq = res->res.interrupt.irq;
-                                irq_found = true;
-                                usb_log_debug2("Found interrupt: %d.\n", irq);
-                                break;
-                        case IO_RANGE:
-                                io_address = res->res.io_range.address;
-                                io_size = res->res.io_range.size;
-                                usb_log_debug2("Found io: %llx %zu.\n",
-                                    res->res.io_range.address, res->res.io_range.size);
-                                io_found = true;
-                                break;
-                        default:
-                                break;
+                switch (res->type)
+                {
+                case INTERRUPT:
+                        irq = res->res.interrupt.irq;
+                        irq_found = true;
+                        usb_log_debug2("Found interrupt: %d.\n", irq);
+                        break;
+
+                case IO_RANGE:
+                        io_address = res->res.io_range.address;
+                        io_size = res->res.io_range.size;
+                        usb_log_debug2("Found io: %llx %zu.\n",
+                            res->res.io_range.address, res->res.io_range.size);
+                        io_found = true;
+
+                default:
+                        break;
                 }
         }
 
-        if (!io_found) {
-                rc = ENOENT;
-                goto leave;
-        }
-
-        if (!irq_found) {
+        if (!io_found || !irq_found) {
                 rc = ENOENT;
                 goto leave;
@@ -120 +117 @@
 }
 /*----------------------------------------------------------------------------*/
+/** Calls the PCI driver with a request to enable interrupts
+ *
+ * @param[in] device Device asking for interrupts
+ * @return Error code.
+ */
 int pci_enable_interrupts(ddf_dev_t *device)
 {
@@ -128 +130 @@
         return enabled ? EOK : EIO;
 }
+/*----------------------------------------------------------------------------*/
+/** Calls the PCI driver with a request to clear legacy support register
+ *
+ * @param[in] device Device asking to disable interrupts
+ * @return Error code.
+ */
+int pci_disable_legacy(ddf_dev_t *device)
+{
+        assert(device);
+        int parent_phone =
+            devman_parent_device_connect(device->handle, IPC_FLAG_BLOCKING);
+        if (parent_phone < 0) {
+                return parent_phone;
+        }
+
+        /* See UHCI design guide for these values,
+         * write all WC bits in USB legacy register */
+        sysarg_t address = 0xc0;
+        sysarg_t value = 0x8f00;
+
+        int rc = async_req_3_0(parent_phone, DEV_IFACE_ID(PCI_DEV_IFACE),
+            IPC_M_CONFIG_SPACE_WRITE_16, address, value);
+        async_hangup(parent_phone);
+
+        return rc;
+}
+/*----------------------------------------------------------------------------*/
 /**
  * @}