]> git.kernelconcepts.de Git - karo-tx-uboot.git/blob - drivers/usb/host/ehci-pci.c
Merge branch 'u-boot-imx/master' into 'u-boot-arm/master'
[karo-tx-uboot.git] / drivers / usb / host / ehci-pci.c
1 /*-
2  * Copyright (c) 2007-2008, Juniper Networks, Inc.
3  * All rights reserved.
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU General Public License as
7  * published by the Free Software Foundation version 2 of
8  * the License.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
18  * MA 02111-1307 USA
19  */
20
21 #include <common.h>
22 #include <errno.h>
23 #include <pci.h>
24 #include <usb.h>
25
26 #include "ehci.h"
27
28 #ifdef CONFIG_PCI_EHCI_DEVICE
29 static struct pci_device_id ehci_pci_ids[] = {
30         /* Please add supported PCI EHCI controller ids here */
31         {0x1033, 0x00E0},       /* NEC */
32         {0x10B9, 0x5239},       /* ULI1575 PCI EHCI module ids */
33         {0x12D8, 0x400F},       /* Pericom */
34         {0, 0}
35 };
36 #else
37 static pci_dev_t ehci_find_class(int index)
38 {
39         int bus;
40         int devnum;
41         pci_dev_t bdf;
42         uint32_t class;
43
44         for (bus = 0; bus <= pci_last_busno(); bus++) {
45                 for (devnum = 0; devnum < PCI_MAX_PCI_DEVICES-1; devnum++) {
46                         pci_read_config_dword(PCI_BDF(bus, devnum, 0),
47                                               PCI_CLASS_REVISION, &class);
48                         if (class >> 16 == 0xffff)
49                                 continue;
50
51                         for (bdf = PCI_BDF(bus, devnum, 0);
52                                         bdf <= PCI_BDF(bus, devnum,
53                                                 PCI_MAX_PCI_FUNCTIONS - 1);
54                                         bdf += PCI_BDF(0, 0, 1)) {
55                                 pci_read_config_dword(bdf, PCI_CLASS_REVISION,
56                                                       &class);
57                                 if ((class >> 8 == PCI_CLASS_SERIAL_USB_EHCI)
58                                                 && !index--)
59                                         return bdf;
60                         }
61                 }
62         }
63
64         return -ENODEV;
65 }
66 #endif
67
68 /*
69  * Create the appropriate control structures to manage
70  * a new EHCI host controller.
71  */
72 int ehci_hcd_init(int index, struct ehci_hccr **ret_hccr,
73                 struct ehci_hcor **ret_hcor)
74 {
75         pci_dev_t pdev;
76         uint32_t cmd;
77         struct ehci_hccr *hccr;
78         struct ehci_hcor *hcor;
79
80 #ifdef CONFIG_PCI_EHCI_DEVICE
81         pdev = pci_find_devices(ehci_pci_ids, CONFIG_PCI_EHCI_DEVICE);
82 #else
83         pdev = ehci_find_class(index);
84 #endif
85         if (pdev < 0) {
86                 printf("EHCI host controller not found\n");
87                 return -1;
88         }
89
90         hccr = (struct ehci_hccr *)pci_map_bar(pdev,
91                         PCI_BASE_ADDRESS_0, PCI_REGION_MEM);
92         hcor = (struct ehci_hcor *)((uint32_t) hccr +
93                         HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
94
95         debug("EHCI-PCI init hccr 0x%x and hcor 0x%x hc_length %d\n",
96                         (uint32_t)hccr, (uint32_t)hcor,
97                         (uint32_t)HC_LENGTH(ehci_readl(&hccr->cr_capbase)));
98
99         *ret_hccr = hccr;
100         *ret_hcor = hcor;
101
102         /* enable busmaster */
103         pci_read_config_dword(pdev, PCI_COMMAND, &cmd);
104         cmd |= PCI_COMMAND_MASTER;
105         pci_write_config_dword(pdev, PCI_COMMAND, cmd);
106         return 0;
107 }
108
109 /*
110  * Destroy the appropriate control structures corresponding
111  * the the EHCI host controller.
112  */
113 int ehci_hcd_stop(int index)
114 {
115         return 0;
116 }