11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * 31da177e4SLinus Torvalds * BRIEF MODULE DESCRIPTION 41da177e4SLinus Torvalds * Board specific pci fixups for the Toshiba rbtx4927 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * Copyright 2001 MontaVista Software Inc. 71da177e4SLinus Torvalds * Author: MontaVista Software, Inc. 81da177e4SLinus Torvalds * ppopov@mvista.com or source@mvista.com 91da177e4SLinus Torvalds * 101da177e4SLinus Torvalds * Copyright (C) 2000-2001 Toshiba Corporation 111da177e4SLinus Torvalds * 121da177e4SLinus Torvalds * Copyright (C) 2004 MontaVista Software Inc. 131da177e4SLinus Torvalds * Author: Manish Lachwani (mlachwani@mvista.com) 141da177e4SLinus Torvalds * 151da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or modify it 161da177e4SLinus Torvalds * under the terms of the GNU General Public License as published by the 171da177e4SLinus Torvalds * Free Software Foundation; either version 2 of the License, or (at your 181da177e4SLinus Torvalds * option) any later version. 191da177e4SLinus Torvalds * 201da177e4SLinus Torvalds * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 211da177e4SLinus Torvalds * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 221da177e4SLinus Torvalds * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 231da177e4SLinus Torvalds * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 241da177e4SLinus Torvalds * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 251da177e4SLinus Torvalds * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 261da177e4SLinus Torvalds * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 271da177e4SLinus Torvalds * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 281da177e4SLinus Torvalds * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 291da177e4SLinus Torvalds * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 301da177e4SLinus Torvalds * 311da177e4SLinus Torvalds * You should have received a copy of the GNU General Public License along 321da177e4SLinus Torvalds * with this program; if not, write to the Free Software Foundation, Inc., 331da177e4SLinus Torvalds * 675 Mass Ave, Cambridge, MA 02139, USA. 341da177e4SLinus Torvalds */ 351da177e4SLinus Torvalds #include <linux/types.h> 361da177e4SLinus Torvalds #include <linux/pci.h> 371da177e4SLinus Torvalds #include <linux/kernel.h> 381da177e4SLinus Torvalds #include <linux/init.h> 391da177e4SLinus Torvalds 401da177e4SLinus Torvalds #include <asm/tx4927/tx4927.h> 411da177e4SLinus Torvalds #include <asm/tx4927/tx4927_pci.h> 421da177e4SLinus Torvalds 431da177e4SLinus Torvalds #undef DEBUG 441da177e4SLinus Torvalds #ifdef DEBUG 451da177e4SLinus Torvalds #define DBG(x...) printk(x) 461da177e4SLinus Torvalds #else 471da177e4SLinus Torvalds #define DBG(x...) 481da177e4SLinus Torvalds #endif 491da177e4SLinus Torvalds 501da177e4SLinus Torvalds /* look up table for backplane pci irq for slots 17-20 by pin # */ 511da177e4SLinus Torvalds static unsigned char backplane_pci_irq[4][4] = { 521da177e4SLinus Torvalds /* PJ6 SLOT: 17, PIN: 1 */ {TX4927_IRQ_IOC_PCIA, 531da177e4SLinus Torvalds /* PJ6 SLOT: 17, PIN: 2 */ 541da177e4SLinus Torvalds TX4927_IRQ_IOC_PCIB, 551da177e4SLinus Torvalds /* PJ6 SLOT: 17, PIN: 3 */ 561da177e4SLinus Torvalds TX4927_IRQ_IOC_PCIC, 571da177e4SLinus Torvalds /* PJ6 SLOT: 17, PIN: 4 */ 581da177e4SLinus Torvalds TX4927_IRQ_IOC_PCID}, 591da177e4SLinus Torvalds /* SB SLOT: 18, PIN: 1 */ {TX4927_IRQ_IOC_PCIB, 601da177e4SLinus Torvalds /* SB SLOT: 18, PIN: 2 */ 611da177e4SLinus Torvalds TX4927_IRQ_IOC_PCIC, 621da177e4SLinus Torvalds /* SB SLOT: 18, PIN: 3 */ 631da177e4SLinus Torvalds TX4927_IRQ_IOC_PCID, 641da177e4SLinus Torvalds /* SB SLOT: 18, PIN: 4 */ 651da177e4SLinus Torvalds TX4927_IRQ_IOC_PCIA}, 661da177e4SLinus Torvalds /* PJ5 SLOT: 19, PIN: 1 */ {TX4927_IRQ_IOC_PCIC, 671da177e4SLinus Torvalds /* PJ5 SLOT: 19, PIN: 2 */ 681da177e4SLinus Torvalds TX4927_IRQ_IOC_PCID, 691da177e4SLinus Torvalds /* PJ5 SLOT: 19, PIN: 3 */ 701da177e4SLinus Torvalds TX4927_IRQ_IOC_PCIA, 711da177e4SLinus Torvalds /* PJ5 SLOT: 19, PIN: 4 */ 721da177e4SLinus Torvalds TX4927_IRQ_IOC_PCIB}, 731da177e4SLinus Torvalds /* PJ4 SLOT: 20, PIN: 1 */ {TX4927_IRQ_IOC_PCID, 741da177e4SLinus Torvalds /* PJ4 SLOT: 20, PIN: 2 */ 751da177e4SLinus Torvalds TX4927_IRQ_IOC_PCIA, 761da177e4SLinus Torvalds /* PJ4 SLOT: 20, PIN: 3 */ 771da177e4SLinus Torvalds TX4927_IRQ_IOC_PCIB, 781da177e4SLinus Torvalds /* PJ4 SLOT: 20, PIN: 4 */ 791da177e4SLinus Torvalds TX4927_IRQ_IOC_PCIC} 801da177e4SLinus Torvalds }; 811da177e4SLinus Torvalds 821da177e4SLinus Torvalds int pci_get_irq(struct pci_dev *dev, int pin) 831da177e4SLinus Torvalds { 841da177e4SLinus Torvalds unsigned char irq = pin; 851da177e4SLinus Torvalds 861da177e4SLinus Torvalds DBG("pci_get_irq: pin is %d\n", pin); 871da177e4SLinus Torvalds /* IRQ rotation */ 881da177e4SLinus Torvalds irq--; /* 0-3 */ 891da177e4SLinus Torvalds if (dev->bus->parent == NULL && 901da177e4SLinus Torvalds PCI_SLOT(dev->devfn) == TX4927_PCIC_IDSEL_AD_TO_SLOT(23)) { 911da177e4SLinus Torvalds printk("Onboard PCI_SLOT(dev->devfn) is %d\n", 921da177e4SLinus Torvalds PCI_SLOT(dev->devfn)); 931da177e4SLinus Torvalds /* IDSEL=A23 is tx4927 onboard pci slot */ 941da177e4SLinus Torvalds irq = (irq + PCI_SLOT(dev->devfn)) % 4; 951da177e4SLinus Torvalds irq++; /* 1-4 */ 961da177e4SLinus Torvalds DBG("irq is now %d\n", irq); 971da177e4SLinus Torvalds 981da177e4SLinus Torvalds switch (irq) { 991da177e4SLinus Torvalds case 1: 1001da177e4SLinus Torvalds irq = TX4927_IRQ_IOC_PCIA; 1011da177e4SLinus Torvalds break; 1021da177e4SLinus Torvalds case 2: 1031da177e4SLinus Torvalds irq = TX4927_IRQ_IOC_PCIB; 1041da177e4SLinus Torvalds break; 1051da177e4SLinus Torvalds case 3: 1061da177e4SLinus Torvalds irq = TX4927_IRQ_IOC_PCIC; 1071da177e4SLinus Torvalds break; 1081da177e4SLinus Torvalds case 4: 1091da177e4SLinus Torvalds irq = TX4927_IRQ_IOC_PCID; 1101da177e4SLinus Torvalds break; 1111da177e4SLinus Torvalds } 1121da177e4SLinus Torvalds } else { 1131da177e4SLinus Torvalds /* PCI Backplane */ 1141da177e4SLinus Torvalds DBG("PCI Backplane PCI_SLOT(dev->devfn) is %d\n", 1151da177e4SLinus Torvalds PCI_SLOT(dev->devfn)); 1161da177e4SLinus Torvalds irq = backplane_pci_irq[PCI_SLOT(dev->devfn) - 17][irq]; 1171da177e4SLinus Torvalds } 1181da177e4SLinus Torvalds DBG("assigned irq %d\n", irq); 1191da177e4SLinus Torvalds return irq; 1201da177e4SLinus Torvalds } 1211da177e4SLinus Torvalds 12219df0d11SRalf Baechle int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) 1231da177e4SLinus Torvalds { 1241da177e4SLinus Torvalds unsigned char irq; 1251da177e4SLinus Torvalds 1261da177e4SLinus Torvalds printk("PCI Setup for pin %d \n", pin); 1271da177e4SLinus Torvalds 1281da177e4SLinus Torvalds if (dev->device == 0x9130) /* IDE */ 1291da177e4SLinus Torvalds irq = 14; 1301da177e4SLinus Torvalds else 1311da177e4SLinus Torvalds irq = pci_get_irq(dev, pin); 1321da177e4SLinus Torvalds 1331da177e4SLinus Torvalds return irq; 1341da177e4SLinus Torvalds } 1351da177e4SLinus Torvalds 1361da177e4SLinus Torvalds /* Do platform specific device initialization at pci_enable_device() time */ 1371da177e4SLinus Torvalds int pcibios_plat_dev_init(struct pci_dev *dev) 1381da177e4SLinus Torvalds { 1391da177e4SLinus Torvalds return 0; 1401da177e4SLinus Torvalds } 141