Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / usb / host / ehci-mpc512x.c

diff --git a/qemu/roms/u-boot/drivers/usb/host/ehci-mpc512x.c b/qemu/roms/u-boot/drivers/usb/host/ehci-mpc512x.c
new file mode 100644 (file)
index 0000000..b320c4a
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/usb/host/ehci-mpc512x.c
@@ -0,0 +1,140 @@
+/*
+ * (C) Copyright 2010, Damien Dusha, <d.dusha@gmail.com>
+ *
+ * (C) Copyright 2009, Value Team S.p.A.
+ * Francesco Rendine, <francesco.rendine@valueteam.com>
+ *
+ * (C) Copyright 2009 Freescale Semiconductor, Inc.
+ *
+ * (C) Copyright 2008, Excito Elektronik i Sk=E5ne AB
+ *
+ * Author: Tor Krill tor@excito.com
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <pci.h>
+#include <usb.h>
+#include <asm/io.h>
+#include <usb/ehci-fsl.h>
+
+#include "ehci.h"
+
+static void fsl_setup_phy(volatile struct ehci_hcor *);
+static void fsl_platform_set_host_mode(volatile struct usb_ehci *ehci);
+static int reset_usb_controller(volatile struct usb_ehci *ehci);
+static void usb_platform_dr_init(volatile struct usb_ehci *ehci);
+
+/*
+ * Initialize SOC FSL EHCI Controller
+ *
+ * This code is derived from EHCI FSL USB Linux driver for MPC5121
+ *
+ */
+int ehci_hcd_init(int index, enum usb_init_type init,
+               struct ehci_hccr **hccr, struct ehci_hcor **hcor)
+{
+       volatile struct usb_ehci *ehci;
+
+       /* Hook the memory mapped registers for EHCI-Controller */
+       ehci = (struct usb_ehci *)CONFIG_SYS_FSL_USB1_ADDR;
+       *hccr = (struct ehci_hccr *)((uint32_t)&(ehci->caplength));
+       *hcor = (struct ehci_hcor *)((uint32_t) *hccr +
+                               HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
+
+       /* configure interface for UTMI_WIDE */
+       usb_platform_dr_init(ehci);
+
+       /* Init Phy USB0 to UTMI+ */
+       fsl_setup_phy(*hcor);
+
+       /* Set to host mode */
+       fsl_platform_set_host_mode(ehci);
+
+       /*
+        * Setting the burst size seems to be required to prevent the
+        * USB from hanging when communicating with certain USB Mass
+        * storage devices. This was determined by analysing the
+        * EHCI registers under Linux vs U-Boot and burstsize was the
+        * major non-interrupt related difference between the two
+        * implementations.
+        *
+        * Some USB sticks behave better than others. In particular,
+        * the following USB stick is especially problematic:
+        * 0930:6545 Toshiba Corp
+        *
+        * The burstsize is set here to match the Linux implementation.
+        */
+       out_be32(&ehci->burstsize, FSL_EHCI_TXPBURST(8) |
+                                  FSL_EHCI_RXPBURST(8));
+
+       return 0;
+}
+
+/*
+ * Destroy the appropriate control structures corresponding
+ * the the EHCI host controller.
+ */
+int ehci_hcd_stop(int index)
+{
+       volatile struct usb_ehci *ehci;
+       int exit_status = 0;
+
+       /* Reset the USB controller */
+       ehci = (struct usb_ehci *)CONFIG_SYS_FSL_USB1_ADDR;
+       exit_status = reset_usb_controller(ehci);
+
+       return exit_status;
+}
+
+static int reset_usb_controller(volatile struct usb_ehci *ehci)
+{
+       unsigned int i;
+
+       /* Command a reset of the USB Controller */
+       out_be32(&(ehci->usbcmd), EHCI_FSL_USBCMD_RST);
+
+       /* Wait for the reset process to finish */
+       for (i = 65535 ; i > 0 ; i--) {
+               /*
+                * The host will set this bit to zero once the
+                * reset process is complete
+                */
+               if ((in_be32(&(ehci->usbcmd)) & EHCI_FSL_USBCMD_RST) == 0)
+                       return 0;
+       }
+
+       /* Hub did not reset in time */
+       return -1;
+}
+
+static void fsl_setup_phy(volatile struct ehci_hcor *hcor)
+{
+       uint32_t portsc;
+
+       portsc  = ehci_readl(&hcor->or_portsc[0]);
+       portsc &= ~(PORT_PTS_MSK | PORT_PTS_PTW);
+
+       /* Enable the phy mode to UTMI Wide */
+       portsc |= PORT_PTS_PTW;
+       portsc |= PORT_PTS_UTMI;
+
+       ehci_writel(&hcor->or_portsc[0], portsc);
+}
+
+static void fsl_platform_set_host_mode(volatile struct usb_ehci *ehci)
+{
+       uint32_t temp;
+
+       temp  = in_le32(&ehci->usbmode);
+       temp |= CM_HOST | ES_BE;
+       out_le32(&ehci->usbmode, temp);
+}
+
+static void usb_platform_dr_init(volatile struct usb_ehci *ehci)
+{
+       /* Configure interface for UTMI_WIDE */
+       out_be32(&ehci->isiphyctrl, PHYCTRL_PHYE | PHYCTRL_PXE);
+       out_be32(&ehci->usbgenctrl, GC_PPP | GC_PFP );
+}