Linux Kernel  3.7.1
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pci-lasat.c
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1 /*
2  * This file is subject to the terms and conditions of the GNU General Public
3  * License. See the file "COPYING" in the main directory of this archive
4  * for more details.
5  *
6  * Copyright (C) 2000, 2001, 04 Keith M Wesolowski
7  */
8 #include <linux/init.h>
9 #include <linux/kernel.h>
10 #include <linux/pci.h>
11 #include <linux/types.h>
12 
13 #include <asm/lasat/lasat.h>
14 
15 #include <irq.h>
16 
17 extern struct pci_ops nile4_pci_ops;
18 extern struct pci_ops gt64xxx_pci0_ops;
19 static struct resource lasat_pci_mem_resource = {
20  .name = "LASAT PCI MEM",
21  .start = 0x18000000,
22  .end = 0x19ffffff,
23  .flags = IORESOURCE_MEM,
24 };
25 
26 static struct resource lasat_pci_io_resource = {
27  .name = "LASAT PCI IO",
28  .start = 0x1a000000,
29  .end = 0x1bffffff,
30  .flags = IORESOURCE_IO,
31 };
32 
33 static struct pci_controller lasat_pci_controller = {
34  .mem_resource = &lasat_pci_mem_resource,
35  .io_resource = &lasat_pci_io_resource,
36 };
37 
38 static int __init lasat_pci_setup(void)
39 {
40  printk(KERN_DEBUG "PCI: starting\n");
41 
42  if (IS_LASAT_200())
43  lasat_pci_controller.pci_ops = &nile4_pci_ops;
44  else
45  lasat_pci_controller.pci_ops = &gt64xxx_pci0_ops;
46 
47  register_pci_controller(&lasat_pci_controller);
48 
49  return 0;
50 }
51 
52 arch_initcall(lasat_pci_setup);
53 
54 #define LASAT_IRQ_ETH1 (LASAT_IRQ_BASE + 0)
55 #define LASAT_IRQ_ETH0 (LASAT_IRQ_BASE + 1)
56 #define LASAT_IRQ_HDC (LASAT_IRQ_BASE + 2)
57 #define LASAT_IRQ_COMP (LASAT_IRQ_BASE + 3)
58 #define LASAT_IRQ_HDLC (LASAT_IRQ_BASE + 4)
59 #define LASAT_IRQ_PCIA (LASAT_IRQ_BASE + 5)
60 #define LASAT_IRQ_PCIB (LASAT_IRQ_BASE + 6)
61 #define LASAT_IRQ_PCIC (LASAT_IRQ_BASE + 7)
62 #define LASAT_IRQ_PCID (LASAT_IRQ_BASE + 8)
63 
64 int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
65 {
66  switch (slot) {
67  case 1:
68  case 2:
69  case 3:
70  return LASAT_IRQ_PCIA + (((slot-1) + (pin-1)) % 4);
71  case 4:
72  return LASAT_IRQ_ETH1; /* Ethernet 1 (LAN 2) */
73  case 5:
74  return LASAT_IRQ_ETH0; /* Ethernet 0 (LAN 1) */
75  case 6:
76  return LASAT_IRQ_HDC; /* IDE controller */
77  default:
78  return 0xff; /* Illegal */
79  }
80 
81  return -1;
82 }
83 
84 /* Do platform specific device initialization at pci_enable_device() time */
86 {
87  return 0;
88 }