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 } 117