drivers/usb/host/ehci-marvell.c

   1 /*
   2  * (C) Copyright 2009
   3  * Marvell Semiconductor <www.marvell.com>
   4  * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
   5  *
   6  * SPDX-License-Identifier:     GPL-2.0+
   7  */
   8
   9 #include <common.h>
  10 #include <asm/io.h>
  11 #include <usb.h>
  12 #include "ehci.h"
  13 #include <asm/arch/cpu.h>
  14
  15 #if defined(CONFIG_KIRKWOOD)
  16 #include <asm/arch/kirkwood.h>
  17 #elif defined(CONFIG_ORION5X)
  18 #include <asm/arch/orion5x.h>
  19 #endif
  20
  21 DECLARE_GLOBAL_DATA_PTR;
  22
  23 #define rdl(off)        readl(MVUSB0_BASE + (off))
  24 #define wrl(off, val)   writel((val), MVUSB0_BASE + (off))
  25
  26 #define USB_WINDOW_CTRL(i)      (0x320 + ((i) << 4))
  27 #define USB_WINDOW_BASE(i)      (0x324 + ((i) << 4))
  28 #define USB_TARGET_DRAM         0x0
  29
  30 /*
  31  * USB 2.0 Bridge Address Decoding registers setup
  32  */
  33 static void usb_brg_adrdec_setup(void)
  34 {
  35         int i;
  36         u32 size, base, attrib;
  37
  38         for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
  39
  40                 /* Enable DRAM bank */
  41                 switch (i) {
  42                 case 0:
  43                         attrib = MVUSB0_CPU_ATTR_DRAM_CS0;
  44                         break;
  45                 case 1:
  46                         attrib = MVUSB0_CPU_ATTR_DRAM_CS1;
  47                         break;
  48                 case 2:
  49                         attrib = MVUSB0_CPU_ATTR_DRAM_CS2;
  50                         break;
  51                 case 3:
  52                         attrib = MVUSB0_CPU_ATTR_DRAM_CS3;
  53                         break;
  54                 default:
  55                         /* invalide bank, disable access */
  56                         attrib = 0;
  57                         break;
  58                 }
  59
  60                 size = gd->bd->bi_dram[i].size;
  61                 base = gd->bd->bi_dram[i].start;
  62                 if ((size) && (attrib))
  63                         wrl(USB_WINDOW_CTRL(i),
  64                                 MVCPU_WIN_CTRL_DATA(size, USB_TARGET_DRAM,
  65                                         attrib, MVCPU_WIN_ENABLE));
  66                 else
  67                         wrl(USB_WINDOW_CTRL(i), MVCPU_WIN_DISABLE);
  68
  69                 wrl(USB_WINDOW_BASE(i), base);
  70         }
  71 }
  72
  73 /*
  74  * Create the appropriate control structures to manage
  75  * a new EHCI host controller.
  76  */
  77 int ehci_hcd_init(int index, enum usb_init_type init,
  78                 struct ehci_hccr **hccr, struct ehci_hcor **hcor)
  79 {
  80         usb_brg_adrdec_setup();
  81
  82         *hccr = (struct ehci_hccr *)(MVUSB0_BASE + 0x100);
  83         *hcor = (struct ehci_hcor *)((uint32_t) *hccr
  84                         + HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
  85
  86         debug("ehci-marvell: init hccr %x and hcor %x hc_length %d\n",
  87                 (uint32_t)*hccr, (uint32_t)*hcor,
  88                 (uint32_t)HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
  89
  90         return 0;
  91 }
  92
  93 /*
  94  * Destroy the appropriate control structures corresponding
  95  * the the EHCI host controller.
  96  */
  97 int ehci_hcd_stop(int index)
  98 {
  99         return 0;
 100 }