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1 | /* |
2 | * Toshiba rbtx4938 pci routines | |
3 | * Copyright (C) 2000-2001 Toshiba Corporation | |
4 | * | |
5 | * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the | |
6 | * terms of the GNU General Public License version 2. This program is | |
7 | * licensed "as is" without any warranty of any kind, whether express | |
8 | * or implied. | |
9 | * | |
10 | * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com) | |
11 | */ | |
12 | #include <linux/types.h> | |
13 | #include <linux/pci.h> | |
14 | #include <linux/kernel.h> | |
15 | #include <linux/init.h> | |
16 | ||
17 | #include <asm/tx4938/rbtx4938.h> | |
18 | ||
19 | extern struct pci_controller tx4938_pci_controller[]; | |
20 | ||
21 | int pci_get_irq(struct pci_dev *dev, int pin) | |
22 | { | |
23 | int irq = pin; | |
24 | u8 slot = PCI_SLOT(dev->devfn); | |
25 | struct pci_controller *controller = (struct pci_controller *)dev->sysdata; | |
26 | ||
27 | if (controller == &tx4938_pci_controller[1]) { | |
28 | /* TX4938 PCIC1 */ | |
29 | switch (slot) { | |
30 | case TX4938_PCIC_IDSEL_AD_TO_SLOT(31): | |
31 | if (tx4938_ccfgptr->pcfg & TX4938_PCFG_ETH0_SEL) | |
32 | return RBTX4938_IRQ_IRC + TX4938_IR_ETH0; | |
33 | break; | |
34 | case TX4938_PCIC_IDSEL_AD_TO_SLOT(30): | |
35 | if (tx4938_ccfgptr->pcfg & TX4938_PCFG_ETH1_SEL) | |
36 | return RBTX4938_IRQ_IRC + TX4938_IR_ETH1; | |
37 | break; | |
38 | } | |
39 | return 0; | |
40 | } | |
41 | ||
42 | /* IRQ rotation */ | |
43 | irq--; /* 0-3 */ | |
44 | if (dev->bus->parent == NULL && | |
45 | (slot == TX4938_PCIC_IDSEL_AD_TO_SLOT(23))) { | |
46 | /* PCI CardSlot (IDSEL=A23) */ | |
47 | /* PCIA => PCIA (IDSEL=A23) */ | |
48 | irq = (irq + 0 + slot) % 4; | |
49 | } else { | |
50 | /* PCI Backplane */ | |
51 | irq = (irq + 33 - slot) % 4; | |
52 | } | |
53 | irq++; /* 1-4 */ | |
54 | ||
55 | switch (irq) { | |
56 | case 1: | |
57 | irq = RBTX4938_IRQ_IOC_PCIA; | |
58 | break; | |
59 | case 2: | |
60 | irq = RBTX4938_IRQ_IOC_PCIB; | |
61 | break; | |
62 | case 3: | |
63 | irq = RBTX4938_IRQ_IOC_PCIC; | |
64 | break; | |
65 | case 4: | |
66 | irq = RBTX4938_IRQ_IOC_PCID; | |
67 | break; | |
68 | } | |
69 | return irq; | |
70 | } | |
71 | ||
19df0d11 | 72 | int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
23fbee9d RB |
73 | { |
74 | unsigned char irq = 0; | |
75 | ||
76 | irq = pci_get_irq(dev, pin); | |
77 | ||
78 | printk(KERN_INFO "PCI: 0x%02x:0x%02x(0x%02x,0x%02x) IRQ=%d\n", | |
79 | dev->bus->number, dev->devfn, PCI_SLOT(dev->devfn), | |
80 | PCI_FUNC(dev->devfn), irq); | |
81 | ||
82 | return irq; | |
83 | } | |
84 | ||
85 | /* | |
86 | * Do platform specific device initialization at pci_enable_device() time | |
87 | */ | |
88 | int pcibios_plat_dev_init(struct pci_dev *dev) | |
89 | { | |
90 | return 0; | |
91 | } | |
92 |