2 * Atheros AP91 reference board PCI initialization
4 * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation.
11 #include <linux/pci.h>
12 #include <linux/ath9k_platform.h>
13 #include <linux/delay.h>
15 #include <asm/mach-ar71xx/ar71xx.h>
16 #include <asm/mach-ar71xx/pci.h>
18 #include "dev-ap91-pci.h"
20 static struct ath9k_platform_data ap91_wmac_data = {
23 static char ap91_wmac_mac[6];
24 static int ap91_pci_fixup_enabled;
26 static struct ar71xx_pci_irq ap91_pci_irqs[] __initdata = {
30 .irq = AR71XX_PCI_IRQ_DEV0,
34 static int ap91_pci_plat_dev_init(struct pci_dev *dev)
36 switch(PCI_SLOT(dev->devfn)) {
38 dev->dev.platform_data = &ap91_wmac_data;
45 static void ap91_pci_fixup(struct pci_dev *dev)
52 if (!ap91_pci_fixup_enabled)
55 printk(KERN_INFO "PCI: fixup device %s\n", pci_name(dev));
57 cal_data = ap91_wmac_data.eeprom_data;
58 if (*cal_data != 0xa55a) {
59 printk(KERN_ERR "PCI: no calibration data found for %s\n",
64 mem = ioremap(AR71XX_PCI_MEM_BASE, 0x10000);
66 printk(KERN_ERR "PCI: ioremap error for device %s\n",
71 /* Setup the PCI device to allow access to the internal registers */
72 pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, 0xffff);
73 pci_read_config_word(dev, PCI_COMMAND, &cmd);
74 cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
75 pci_write_config_word(dev, PCI_COMMAND, cmd);
77 /* set pointer to first reg address */
79 while (*cal_data != 0xffff) {
83 val |= (*cal_data++) << 16;
85 __raw_writel(val, mem + reg);
89 pci_read_config_dword(dev, PCI_VENDOR_ID, &val);
90 dev->vendor = val & 0xffff;
91 dev->device = (val >> 16) & 0xffff;
93 pci_read_config_dword(dev, PCI_CLASS_REVISION, &val);
94 dev->revision = val & 0xff;
95 dev->class = val >> 8; /* upper 3 bytes */
99 DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ATHEROS, PCI_ANY_ID, ap91_pci_fixup);
101 void __init ap91_pci_init(u8 *cal_data, u8 *mac_addr)
104 memcpy(ap91_wmac_data.eeprom_data, cal_data,
105 sizeof(ap91_wmac_data.eeprom_data));
108 memcpy(ap91_wmac_mac, mac_addr, sizeof(ap91_wmac_mac));
109 ap91_wmac_data.macaddr = ap91_wmac_mac;
112 ar71xx_pci_plat_dev_init = ap91_pci_plat_dev_init;
113 ar71xx_pci_init(ARRAY_SIZE(ap91_pci_irqs), ap91_pci_irqs);
115 ap91_pci_fixup_enabled = 1;