| Prafulla Wadaskar | 46c54fd | 2009-06-29 20:56:43 +0530 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2009 |
| 3 | * Marvell Semiconductor <www.marvell.com> |
| 4 | * Written-by: Prafulla Wadaskar <prafulla@marvell.com> |
| 5 | * |
| 6 | * See file CREDITS for list of people who contributed to this |
| 7 | * project. |
| 8 | * |
| 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. |
| 13 | * |
| 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. |
| 18 | * |
| 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, |
| 22 | * MA 02110-1301 USA |
| 23 | */ |
| 24 | |
| 25 | #include <common.h> |
| 26 | #include <asm/io.h> |
| 27 | #include <usb.h> |
| 28 | #include "ehci.h" |
| 29 | #include "ehci-core.h" |
| 30 | #include <asm/arch/kirkwood.h> |
| 31 | |
| 32 | #define rdl(off) readl(KW_USB20_BASE + (off)) |
| 33 | #define wrl(off, val) writel((val), KW_USB20_BASE + (off)) |
| 34 | |
| 35 | #define USB_WINDOW_CTRL(i) (0x320 + ((i) << 4)) |
| 36 | #define USB_WINDOW_BASE(i) (0x324 + ((i) << 4)) |
| 37 | #define USB_TARGET_DRAM 0x0 |
| 38 | |
| 39 | /* |
| 40 | * USB 2.0 Bridge Address Decoding registers setup |
| 41 | */ |
| 42 | static void usb_brg_adrdec_setup(void) |
| 43 | { |
| 44 | int i; |
| 45 | u32 size, attrib; |
| 46 | |
| 47 | for (i = 0; i < CONFIG_NR_DRAM_BANKS; i++) { |
| 48 | |
| 49 | /* Enable DRAM bank */ |
| 50 | switch (i) { |
| 51 | case 0: |
| 52 | attrib = KWCPU_ATTR_DRAM_CS0; |
| 53 | break; |
| 54 | case 1: |
| 55 | attrib = KWCPU_ATTR_DRAM_CS1; |
| 56 | break; |
| 57 | case 2: |
| 58 | attrib = KWCPU_ATTR_DRAM_CS2; |
| 59 | break; |
| 60 | case 3: |
| 61 | attrib = KWCPU_ATTR_DRAM_CS3; |
| 62 | break; |
| 63 | default: |
| 64 | /* invalide bank, disable access */ |
| 65 | attrib = 0; |
| 66 | break; |
| 67 | } |
| 68 | |
| 69 | size = kw_sdram_bs(i); |
| 70 | if ((size) && (attrib)) |
| 71 | wrl(USB_WINDOW_CTRL(i), |
| 72 | KWCPU_WIN_CTRL_DATA(size, USB_TARGET_DRAM, |
| 73 | attrib, KWCPU_WIN_ENABLE)); |
| 74 | else |
| 75 | wrl(USB_WINDOW_CTRL(i), KWCPU_WIN_DISABLE); |
| 76 | |
| 77 | wrl(USB_WINDOW_BASE(i), kw_sdram_bar(i)); |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | /* |
| 82 | * Create the appropriate control structures to manage |
| 83 | * a new EHCI host controller. |
| 84 | */ |
| 85 | int ehci_hcd_init(void) |
| 86 | { |
| 87 | usb_brg_adrdec_setup(); |
| 88 | |
| 89 | hccr = (struct ehci_hccr *)(KW_USB20_BASE + 0x100); |
| 90 | hcor = (struct ehci_hcor *)((uint32_t) hccr |
| 91 | + HC_LENGTH(ehci_readl(&hccr->cr_capbase))); |
| 92 | |
| 93 | debug("Kirkwood-ehci: init hccr %x and hcor %x hc_length %d\n", |
| 94 | (uint32_t)hccr, (uint32_t)hcor, |
| 95 | (uint32_t)HC_LENGTH(ehci_readl(&hccr->cr_capbase))); |
| 96 | |
| 97 | return 0; |
| 98 | } |
| 99 | |
| 100 | /* |
| 101 | * Destroy the appropriate control structures corresponding |
| 102 | * the the EHCI host controller. |
| 103 | */ |
| 104 | int ehci_hcd_stop(void) |
| 105 | { |
| 106 | return 0; |
| 107 | } |