mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 10:39:04 +00:00
127 lines
2.9 KiB
C
127 lines
2.9 KiB
C
/*
|
|
* Atheros AP94 reference board PCI initialization
|
|
*
|
|
* Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 as published
|
|
* by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/pci.h>
|
|
#include <linux/delay.h>
|
|
|
|
#include <asm/mach-ath79/ar71xx_regs.h>
|
|
#include <asm/mach-ath79/ath79.h>
|
|
|
|
struct ath9k_fixup {
|
|
u16 *cal_data;
|
|
unsigned slot;
|
|
};
|
|
|
|
static int ath9k_num_fixups;
|
|
static struct ath9k_fixup ath9k_fixups[2];
|
|
|
|
static void ath9k_pci_fixup(struct pci_dev *dev)
|
|
{
|
|
void __iomem *mem;
|
|
u16 *cal_data = NULL;
|
|
u16 cmd;
|
|
u32 bar0;
|
|
u32 val;
|
|
unsigned i;
|
|
|
|
for (i = 0; i < ath9k_num_fixups; i++) {
|
|
if (ath9k_fixups[i].cal_data == NULL)
|
|
continue;
|
|
|
|
if (ath9k_fixups[i].slot != PCI_SLOT(dev->devfn))
|
|
continue;
|
|
|
|
cal_data = ath9k_fixups[i].cal_data;
|
|
break;
|
|
}
|
|
|
|
if (cal_data == NULL)
|
|
return;
|
|
|
|
if (*cal_data != 0xa55a) {
|
|
pr_err("pci %s: invalid calibration data\n", pci_name(dev));
|
|
return;
|
|
}
|
|
|
|
pr_info("pci %s: fixup device configuration\n", pci_name(dev));
|
|
|
|
mem = ioremap(AR71XX_PCI_MEM_BASE, 0x10000);
|
|
if (!mem) {
|
|
pr_err("pci %s: ioremap error\n", pci_name(dev));
|
|
return;
|
|
}
|
|
|
|
pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &bar0);
|
|
|
|
switch (ath79_soc) {
|
|
case ATH79_SOC_AR7161:
|
|
pci_write_config_dword(dev, PCI_BASE_ADDRESS_0,
|
|
AR71XX_PCI_MEM_BASE);
|
|
break;
|
|
case ATH79_SOC_AR7240:
|
|
pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, 0xffff);
|
|
break;
|
|
|
|
case ATH79_SOC_AR7241:
|
|
case ATH79_SOC_AR7242:
|
|
pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, 0x1000ffff);
|
|
break;
|
|
case ATH79_SOC_AR9344:
|
|
pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, 0x1000ffff);
|
|
break;
|
|
|
|
default:
|
|
BUG();
|
|
}
|
|
|
|
pci_read_config_word(dev, PCI_COMMAND, &cmd);
|
|
cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
|
|
pci_write_config_word(dev, PCI_COMMAND, cmd);
|
|
|
|
/* set pointer to first reg address */
|
|
cal_data += 3;
|
|
while (*cal_data != 0xffff) {
|
|
u32 reg;
|
|
reg = *cal_data++;
|
|
val = *cal_data++;
|
|
val |= (*cal_data++) << 16;
|
|
|
|
__raw_writel(val, mem + reg);
|
|
udelay(100);
|
|
}
|
|
|
|
pci_read_config_dword(dev, PCI_VENDOR_ID, &val);
|
|
dev->vendor = val & 0xffff;
|
|
dev->device = (val >> 16) & 0xffff;
|
|
|
|
pci_read_config_dword(dev, PCI_CLASS_REVISION, &val);
|
|
dev->revision = val & 0xff;
|
|
dev->class = val >> 8; /* upper 3 bytes */
|
|
|
|
pci_read_config_word(dev, PCI_COMMAND, &cmd);
|
|
cmd &= ~(PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
|
|
pci_write_config_word(dev, PCI_COMMAND, cmd);
|
|
|
|
pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, bar0);
|
|
|
|
iounmap(mem);
|
|
}
|
|
DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ATHEROS, PCI_ANY_ID, ath9k_pci_fixup);
|
|
|
|
void __init pci_enable_ath9k_fixup(unsigned slot, u16 *cal_data)
|
|
{
|
|
if (ath9k_num_fixups >= ARRAY_SIZE(ath9k_fixups))
|
|
return;
|
|
|
|
ath9k_fixups[ath9k_num_fixups].slot = slot;
|
|
ath9k_fixups[ath9k_num_fixups].cal_data = cal_data;
|
|
ath9k_num_fixups++;
|
|
}
|