OpenWrt – Rev 3
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From bbebbf735a02b6d044ed928978ab4bd5f1833364 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jonas.gorski@gmail.com>
Date: Thu, 3 May 2012 14:36:11 +0200
Subject: [PATCH 61/72] BCM63XX: add a fixup for ath9k devices
---
arch/mips/bcm63xx/Makefile | 3 +-
arch/mips/bcm63xx/pci-ath9k-fixup.c | 190 ++++++++++++++++++++
.../include/asm/mach-bcm63xx/pci_ath9k_fixup.h | 7 +
3 files changed, 199 insertions(+), 1 deletion(-)
create mode 100644 arch/mips/bcm63xx/pci-ath9k-fixup.c
create mode 100644 arch/mips/include/asm/mach-bcm63xx/pci_ath9k_fixup.h
--- a/arch/mips/bcm63xx/Makefile
+++ b/arch/mips/bcm63xx/Makefile
@@ -2,7 +2,7 @@ obj-y += clk.o cpu.o cs.o gpio.o irq.o
setup.o timer.o dev-dsp.o dev-enet.o dev-flash.o \
dev-pcmcia.o dev-rng.o \
dev-wdt.o dev-usb-ehci.o dev-usb-ohci.o dev-usb-usbd.o \
- usb-common.o sprom.o
+ pci-ath9k-fixup.o usb-common.o sprom.o
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
obj-y += boards/
--- /dev/null
+++ b/arch/mips/bcm63xx/pci-ath9k-fixup.c
@@ -0,0 +1,200 @@
+/*
+ * Broadcom BCM63XX Ath9k EEPROM fixup helper.
+ *
+ * Copytight (C) 2012 Jonas Gorski <jonas.gorski@gmail.com>
+ *
+ * Based on
+ *
+ * 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/if_ether.h>
+#include <linux/pci.h>
+#include <linux/delay.h>
+#include <linux/ath9k_platform.h>
+
+#include <bcm63xx_cpu.h>
+#include <bcm63xx_regs.h>
+#include <bcm63xx_io.h>
+#include <bcm63xx_nvram.h>
+#include <bcm63xx_dev_pci.h>
+#include <bcm63xx_dev_flash.h>
+#include <pci_ath9k_fixup.h>
+
+#define bcm_hsspi_writel(v, o) bcm_rset_writel(RSET_HSSPI, (v), (o))
+
+struct ath9k_fixup {
+ unsigned slot;
+ u8 mac[ETH_ALEN];
+ struct ath9k_platform_data pdata;
+};
+
+static int ath9k_num_fixups;
+static struct ath9k_fixup ath9k_fixups[2] = {
+ {
+ .slot = 255,
+ .pdata = {
+ .led_pin = -1,
+ },
+ },
+ {
+ .slot = 255,
+ .pdata = {
+ .led_pin = -1,
+ },
+ },
+};
+
+static u16 *bcm63xx_read_eeprom(u16 *eeprom, u32 offset)
+{
+ u32 addr;
+
+ if (BCMCPU_IS_6328()) {
+ addr = 0x18000000;
+ } else {
+ addr = bcm_mpi_readl(MPI_CSBASE_REG(0));
+ addr &= MPI_CSBASE_BASE_MASK;
+ }
+
+ switch (bcm63xx_flash_get_type()) {
+ case BCM63XX_FLASH_TYPE_PARALLEL:
+ memcpy(eeprom, (void *)KSEG1ADDR(addr + offset), ATH9K_PLAT_EEP_MAX_WORDS * sizeof(u16));
+ return eeprom;
+ case BCM63XX_FLASH_TYPE_SERIAL:
+ /* the first megabyte is memory mapped */
+ if (offset < 0x100000) {
+ memcpy(eeprom, (void *)KSEG1ADDR(addr + offset), ATH9K_PLAT_EEP_MAX_WORDS * sizeof(u16));
+ return eeprom;
+ }
+
+ if (BCMCPU_IS_6328()) {
+ /* we can change the memory mapped megabyte */
+ bcm_hsspi_writel(offset & 0xf00000, 0x18);
+ memcpy(eeprom, (void *)KSEG1ADDR(addr + (offset & 0xfffff)), ATH9K_PLAT_EEP_MAX_WORDS * sizeof(u16));
+ bcm_hsspi_writel(0, 0x18);
+ return eeprom;
+ }
+ /* can't do anything here without talking to the SPI controller. */
+ case BCM63XX_FLASH_TYPE_NAND:
+ default:
+ return NULL;
+ }
+}
+
+static void ath9k_pci_fixup(struct pci_dev *dev)
+{
+ void __iomem *mem;
+ struct ath9k_platform_data *pdata = NULL;
+ struct pci_dev *bridge = pci_upstream_bridge(dev);
+ u16 *cal_data = NULL;
+ u16 cmd;
+ u32 bar0;
+ u32 val;
+ unsigned i;
+
+ for (i = 0; i < ath9k_num_fixups; i++) {
+ if (ath9k_fixups[i].slot != PCI_SLOT(dev->devfn))
+ continue;
+
+ cal_data = ath9k_fixups[i].pdata.eeprom_data;
+ pdata = &ath9k_fixups[i].pdata;
+ 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));
+
+ switch (bcm63xx_get_cpu_id()) {
+ case BCM6328_CPU_ID:
+ val = BCM_PCIE_MEM_BASE_PA_6328;
+ break;
+ case BCM6348_CPU_ID:
+ case BCM6358_CPU_ID:
+ case BCM6368_CPU_ID:
+ val = BCM_PCI_MEM_BASE_PA;
+ break;
+ default:
+ BUG();
+ }
+
+ mem = ioremap(val, 0x10000);
+ if (!mem) {
+ pr_err("pci %s: ioremap error\n", pci_name(dev));
+ return;
+ }
+
+ if (bridge)
+ pci_enable_device(bridge);
+
+ pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &bar0);
+ pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &bar0);
+ pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, val);
+
+ pci_read_config_word(dev, PCI_COMMAND, &cmd);
+ cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
+ pci_write_config_word(dev, PCI_COMMAND, cmd);
+
+ /* set offset to first reg address */
+ cal_data += 3;
+ while(*cal_data != 0xffff) {
+ u32 reg;
+ reg = *cal_data++;
+ val = *cal_data++;
+ val |= (*cal_data++) << 16;
+
+ 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);
+
+ if (bridge)
+ pci_disable_device(bridge);
+
+ iounmap(mem);
+
+ dev->dev.platform_data = pdata;
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATHEROS, PCI_ANY_ID, ath9k_pci_fixup);
+
+void __init pci_enable_ath9k_fixup(unsigned slot, u32 offset)
+{
+ if (ath9k_num_fixups >= ARRAY_SIZE(ath9k_fixups))
+ return;
+
+ ath9k_fixups[ath9k_num_fixups].slot = slot;
+
+ if (!bcm63xx_read_eeprom(ath9k_fixups[ath9k_num_fixups].pdata.eeprom_data, offset))
+ return;
+
+ if (bcm63xx_nvram_get_mac_address(ath9k_fixups[ath9k_num_fixups].mac))
+ return;
+
+ ath9k_fixups[ath9k_num_fixups].pdata.macaddr = ath9k_fixups[ath9k_num_fixups].mac;
+ ath9k_num_fixups++;
+}
--- /dev/null
+++ b/arch/mips/include/asm/mach-bcm63xx/pci_ath9k_fixup.h
@@ -0,0 +1,7 @@
+#ifndef _PCI_ATH9K_FIXUP
+#define _PCI_ATH9K_FIXUP
+
+
+void pci_enable_ath9k_fixup(unsigned slot, u32 offset) __init;
+
+#endif /* _PCI_ATH9K_FIXUP */
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