Linux Kernel  3.7.1
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iq81340sc.c
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1 /*
2  * iq81340sc board support
3  * Copyright (c) 2005-2006, Intel Corporation.
4  *
5  * This program is free software; you can redistribute it and/or modify it
6  * under the terms and conditions of the GNU General Public License,
7  * version 2, as published by the Free Software Foundation.
8  *
9  * This program is distributed in the hope it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12  * more details.
13  *
14  * You should have received a copy of the GNU General Public License along with
15  * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
16  * Place - Suite 330, Boston, MA 02111-1307 USA.
17  *
18  */
19 #include <linux/pci.h>
20 
21 #include <mach/hardware.h>
22 #include <asm/irq.h>
23 #include <asm/mach/pci.h>
24 #include <asm/mach-types.h>
25 #include <asm/mach/arch.h>
26 #include <mach/pci.h>
27 #include <asm/mach/time.h>
28 #include <mach/time.h>
29 
30 extern int init_atu;
31 
32 static int __init
33 iq81340sc_atux_map_irq(const struct pci_dev *dev, u8 idsel, u8 pin)
34 {
35  WARN_ON(idsel < 1 || idsel > 2);
36 
37  switch (idsel) {
38  case 1:
39  switch (pin) {
40  case 1: return ATUX_INTB;
41  case 2: return ATUX_INTC;
42  case 3: return ATUX_INTD;
43  case 4: return ATUX_INTA;
44  default: return -1;
45  }
46  case 2:
47  switch (pin) {
48  case 1: return ATUX_INTC;
49  case 2: return ATUX_INTC;
50  case 3: return ATUX_INTC;
51  case 4: return ATUX_INTC;
52  default: return -1;
53  }
54  default: return -1;
55  }
56 }
57 
58 static struct hw_pci iq81340sc_pci __initdata = {
59  .nr_controllers = 0,
60  .setup = iop13xx_pci_setup,
61  .scan = iop13xx_scan_bus,
62  .map_irq = iq81340sc_atux_map_irq,
63  .preinit = iop13xx_pci_init
64 };
65 
66 static int __init iq81340sc_pci_init(void)
67 {
68  iop13xx_atu_select(&iq81340sc_pci);
69  pci_common_init(&iq81340sc_pci);
71 
72  return 0;
73 }
74 
75 static void __init iq81340sc_init(void)
76 {
78  iq81340sc_pci_init();
80 }
81 
82 static void __init iq81340sc_timer_init(void)
83 {
84  unsigned long bus_freq = iop13xx_core_freq() / iop13xx_xsi_bus_ratio();
85  printk(KERN_DEBUG "%s: bus frequency: %lu\n", __func__, bus_freq);
86  iop_init_time(bus_freq);
87 }
88 
89 static struct sys_timer iq81340sc_timer = {
90  .init = iq81340sc_timer_init,
91 };
92 
93 MACHINE_START(IQ81340SC, "Intel IQ81340SC")
94  /* Maintainer: Dan Williams <[email protected]> */
95  .atag_offset = 0x100,
96  .init_early = iop13xx_init_early,
97  .map_io = iop13xx_map_io,
98  .init_irq = iop13xx_init_irq,
99  .timer = &iq81340sc_timer,
100  .init_machine = iq81340sc_init,
101  .restart = iop13xx_restart,