3 * Marvell Semiconductor <www.marvell.com>
4 * Written-by: Prafulla Wadaskar <prafulla@marvell.com>
6 * See file CREDITS for list of people who contributed to this
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
29 #include "ehci-core.h"
30 #include <asm/arch/cpu.h>
31 #include <asm/arch/kirkwood.h>
33 #define rdl(off) readl(KW_USB20_BASE + (off))
34 #define wrl(off, val) writel((val), KW_USB20_BASE + (off))
36 #define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4))
37 #define USB_WINDOW_BASE(i) (0x324 + ((i) << 4))
38 #define USB_TARGET_DRAM 0x0
41 * USB 2.0 Bridge Address Decoding registers setup
43 static void usb_brg_adrdec_setup(void)
48 for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) {
50 /* Enable DRAM bank */
53 attrib = KWCPU_ATTR_DRAM_CS0;
56 attrib = KWCPU_ATTR_DRAM_CS1;
59 attrib = KWCPU_ATTR_DRAM_CS2;
62 attrib = KWCPU_ATTR_DRAM_CS3;
65 /* invalide bank, disable access */
70 size = kw_sdram_bs(i);
71 if ((size) && (attrib))
72 wrl(USB_WINDOW_CTRL(i),
73 KWCPU_WIN_CTRL_DATA(size, USB_TARGET_DRAM,
74 attrib, KWCPU_WIN_ENABLE));
76 wrl(USB_WINDOW_CTRL(i), KWCPU_WIN_DISABLE);
78 wrl(USB_WINDOW_BASE(i), kw_sdram_bar(i));
83 * Create the appropriate control structures to manage
84 * a new EHCI host controller.
86 int ehci_hcd_init(void)
88 usb_brg_adrdec_setup();
90 hccr = (struct ehci_hccr *)(KW_USB20_BASE + 0x100);
91 hcor = (struct ehci_hcor *)((uint32_t) hccr
92 + HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
94 debug("Kirkwood-ehci: init hccr %x and hcor %x hc_length %d\n",
95 (uint32_t)hccr, (uint32_t)hcor,
96 (uint32_t)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
102 * Destroy the appropriate control structures corresponding
103 * the the EHCI host controller.
105 int ehci_hcd_stop(void)