ar71xx: move arch specific files to files-2.6.39

[openwrt/svn-archive/archive.git] / target / linux / ar71xx / files-2.6.39 / arch / mips / ar71xx / pci-ath9k-fixup.c

diff --git a/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/pci-ath9k-fixup.c b/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/pci-ath9k-fixup.c
new file mode 100644 (file)
index 0000000..21f5a68
--- /dev/null
+++ b/target/linux/ar71xx/files-2.6.39/arch/mips/ar71xx/pci-ath9k-fixup.c
@@ -0,0 +1,123 @@
+/*
+ *  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-ar71xx/ar71xx.h>
+#include <asm/mach-ar71xx/pci.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 (ar71xx_soc) {
+       case AR71XX_SOC_AR7161:
+               pci_write_config_dword(dev, PCI_BASE_ADDRESS_0,
+                                      AR71XX_PCI_MEM_BASE);
+               break;
+       case AR71XX_SOC_AR7240:
+               pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, 0xffff);
+               break;
+
+       case AR71XX_SOC_AR7241:
+       case AR71XX_SOC_AR7242:
+               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++;
+}