Commit | Line | Data |
---|---|---|
959f85f8 | 1 | /* |
9ca04434 | 2 | * arch/sh/drivers/pci/fixups-landisk.c |
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3 | * |
4 | * PCI initialization for the I-O DATA Device, Inc. LANDISK board | |
5 | * | |
6 | * Copyright (C) 2006 kogiidena | |
9ca04434 | 7 | * Copyright (C) 2010 Nobuhiro Iwamatsu |
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8 | * |
9 | * May be copied or modified under the terms of the GNU General Public | |
10 | * License. See linux/COPYING for more information. | |
11 | */ | |
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12 | #include <linux/kernel.h> |
13 | #include <linux/types.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/delay.h> | |
16 | #include <linux/pci.h> | |
17 | #include "pci-sh4.h" | |
18 | ||
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19 | #define PCIMCR_MRSET_OFF 0xBFFFFFFF |
20 | #define PCIMCR_RFSH_OFF 0xFFFFFFFB | |
21 | ||
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22 | int pcibios_map_platform_irq(struct pci_dev *pdev, u8 slot, u8 pin) |
23 | { | |
24 | /* | |
25 | * slot0: pin1-4 = irq5,6,7,8 | |
26 | * slot1: pin1-4 = irq6,7,8,5 | |
27 | * slot2: pin1-4 = irq7,8,5,6 | |
28 | * slot3: pin1-4 = irq8,5,6,7 | |
29 | */ | |
30 | int irq = ((slot + pin - 1) & 0x3) + 5; | |
31 | ||
32 | if ((slot | (pin - 1)) > 0x3) { | |
9ca04434 | 33 | printk(KERN_WARNING "PCI: Bad IRQ mapping request for slot %d pin %c\n", |
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34 | slot, pin - 1 + 'A'); |
35 | return -1; | |
36 | } | |
37 | return irq; | |
38 | } | |
9ca04434 NI |
39 | |
40 | int pci_fixup_pcic(struct pci_channel *chan) | |
41 | { | |
42 | unsigned long bcr1, mcr; | |
43 | ||
44 | bcr1 = __raw_readl(SH7751_BCR1); | |
45 | bcr1 |= 0x40080000; /* Enable Bit 19 BREQEN, set PCIC to slave */ | |
46 | pci_write_reg(chan, bcr1, SH4_PCIBCR1); | |
47 | ||
48 | mcr = __raw_readl(SH7751_MCR); | |
49 | mcr = (mcr & PCIMCR_MRSET_OFF) & PCIMCR_RFSH_OFF; | |
50 | pci_write_reg(chan, mcr, SH4_PCIMCR); | |
51 | ||
52 | pci_write_reg(chan, 0x0c000000, SH7751_PCICONF5); | |
53 | pci_write_reg(chan, 0xd0000000, SH7751_PCICONF6); | |
54 | pci_write_reg(chan, 0x0c000000, SH4_PCILAR0); | |
55 | pci_write_reg(chan, 0x00000000, SH4_PCILAR1); | |
56 | ||
57 | return 0; | |
58 | } |