1 From bbebbf735a02b6d044ed928978ab4bd5f1833364 Mon Sep 17 00:00:00 2001
2 From: Jonas Gorski <jonas.gorski@gmail.com>
3 Date: Thu, 3 May 2012 14:36:11 +0200
4 Subject: [PATCH 61/72] BCM63XX: add a fixup for ath9k devices
7 arch/mips/bcm63xx/Makefile | 3 +-
8 arch/mips/bcm63xx/pci-ath9k-fixup.c | 190 ++++++++++++++++++++
9 .../include/asm/mach-bcm63xx/pci_ath9k_fixup.h | 7 +
10 3 files changed, 199 insertions(+), 1 deletion(-)
11 create mode 100644 arch/mips/bcm63xx/pci-ath9k-fixup.c
12 create mode 100644 arch/mips/include/asm/mach-bcm63xx/pci_ath9k_fixup.h
14 --- a/arch/mips/bcm63xx/Makefile
15 +++ b/arch/mips/bcm63xx/Makefile
17 obj-y += clk.o cpu.o cs.o gpio.o irq.o nvram.o prom.o reset.o \
18 setup.o timer.o dev-dsp.o dev-enet.o dev-flash.o \
19 dev-hsspi.o dev-pcmcia.o dev-rng.o dev-spi.o dev-uart.o \
20 - dev-wdt.o dev-usb-ehci.o dev-usb-ohci.o dev-usb-usbd.o
21 + dev-wdt.o dev-usb-ehci.o dev-usb-ohci.o dev-usb-usbd.o \
23 obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
27 +++ b/arch/mips/bcm63xx/pci-ath9k-fixup.c
30 + * Broadcom BCM63XX Ath9k EEPROM fixup helper.
32 + * Copytight (C) 2012 Jonas Gorski <jonas.gorski@gmail.com>
36 + * Atheros AP94 reference board PCI initialization
38 + * Copyright (C) 2009-2010 Gabor Juhos <juhosg@openwrt.org>
40 + * This program is free software; you can redistribute it and/or modify it
41 + * under the terms of the GNU General Public License version 2 as published
42 + * by the Free Software Foundation.
45 +#include <linux/pci.h>
46 +#include <linux/delay.h>
47 +#include <linux/ath9k_platform.h>
49 +#include <bcm63xx_cpu.h>
50 +#include <bcm63xx_io.h>
51 +#include <bcm63xx_nvram.h>
52 +#include <bcm63xx_dev_pci.h>
53 +#include <bcm63xx_dev_flash.h>
54 +#include <bcm63xx_dev_hsspi.h>
55 +#include <pci_ath9k_fixup.h>
60 + struct ath9k_platform_data pdata;
63 +static int ath9k_num_fixups;
64 +static struct ath9k_fixup ath9k_fixups[2] = {
79 +static u16 *bcm63xx_read_eeprom(u16 *eeprom, u32 offset)
83 + if (BCMCPU_IS_6328()) {
86 + addr = bcm_mpi_readl(MPI_CSBASE_REG(0));
87 + addr &= MPI_CSBASE_BASE_MASK;
90 + switch (bcm63xx_attached_flash) {
91 + case BCM63XX_FLASH_TYPE_PARALLEL:
92 + memcpy(eeprom, (void *)KSEG1ADDR(addr + offset), ATH9K_PLAT_EEP_MAX_WORDS * sizeof(u16));
94 + case BCM63XX_FLASH_TYPE_SERIAL:
95 + /* the first megabyte is memory mapped */
96 + if (offset < 0x100000) {
97 + memcpy(eeprom, (void *)KSEG1ADDR(addr + offset), ATH9K_PLAT_EEP_MAX_WORDS * sizeof(u16));
101 + if (BCMCPU_IS_6328()) {
102 + /* we can change the memory mapped megabyte */
103 + bcm_hsspi_writel(offset & 0xf00000, 0x18);
104 + memcpy(eeprom, (void *)KSEG1ADDR(addr + (offset & 0xfffff)), ATH9K_PLAT_EEP_MAX_WORDS * sizeof(u16));
105 + bcm_hsspi_writel(0, 0x18);
108 + /* can't do anything here without talking to the SPI controller. */
109 + case BCM63XX_FLASH_TYPE_NAND:
115 +static void ath9k_pci_fixup(struct pci_dev *dev)
118 + struct ath9k_platform_data *pdata = NULL;
119 + u16 *cal_data = NULL;
125 + for (i = 0; i < ath9k_num_fixups; i++) {
126 + if (ath9k_fixups[i].slot != PCI_SLOT(dev->devfn))
129 + cal_data = ath9k_fixups[i].pdata.eeprom_data;
130 + pdata = &ath9k_fixups[i].pdata;
134 + if (cal_data == NULL)
137 + if (*cal_data != 0xa55a) {
138 + pr_err("pci %s: invalid calibration data\n", pci_name(dev));
142 + pr_info("pci %s: fixup device configuration\n", pci_name(dev));
144 + switch (bcm63xx_get_cpu_id()) {
145 + case BCM6328_CPU_ID:
146 + val = BCM_PCIE_MEM_BASE_PA;
148 + case BCM6348_CPU_ID:
149 + case BCM6358_CPU_ID:
150 + case BCM6368_CPU_ID:
151 + val = BCM_PCI_MEM_BASE_PA;
157 + mem = ioremap(val, 0x10000);
159 + pr_err("pci %s: ioremap error\n", pci_name(dev));
163 + pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &bar0);
164 + pci_read_config_dword(dev, PCI_BASE_ADDRESS_0, &bar0);
165 + pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, val);
167 + pci_read_config_word(dev, PCI_COMMAND, &cmd);
168 + cmd |= PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY;
169 + pci_write_config_word(dev, PCI_COMMAND, cmd);
171 + /* set offset to first reg address */
173 + while(*cal_data != 0xffff) {
177 + val |= (*cal_data++) << 16;
179 + writel(val, mem + reg);
183 + pci_read_config_dword(dev, PCI_VENDOR_ID, &val);
184 + dev->vendor = val & 0xffff;
185 + dev->device = (val >> 16) & 0xffff;
187 + pci_read_config_dword(dev, PCI_CLASS_REVISION, &val);
188 + dev->revision = val & 0xff;
189 + dev->class = val >> 8; /* upper 3 bytes */
191 + pci_read_config_word(dev, PCI_COMMAND, &cmd);
192 + cmd &= ~(PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
193 + pci_write_config_word(dev, PCI_COMMAND, cmd);
195 + pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, bar0);
199 + dev->dev.platform_data = pdata;
201 +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATHEROS, PCI_ANY_ID, ath9k_pci_fixup);
203 +void __init pci_enable_ath9k_fixup(unsigned slot, u32 offset)
205 + if (ath9k_num_fixups >= ARRAY_SIZE(ath9k_fixups))
208 + ath9k_fixups[ath9k_num_fixups].slot = slot;
210 + if (!bcm63xx_read_eeprom(ath9k_fixups[ath9k_num_fixups].pdata.eeprom_data, offset))
213 + if (bcm63xx_nvram_get_mac_address(ath9k_fixups[ath9k_num_fixups].mac))
216 + ath9k_fixups[ath9k_num_fixups].pdata.macaddr = ath9k_fixups[ath9k_num_fixups].mac;
217 + ath9k_num_fixups++;
220 +++ b/arch/mips/include/asm/mach-bcm63xx/pci_ath9k_fixup.h
222 +#ifndef _PCI_ATH9K_FIXUP
223 +#define _PCI_ATH9K_FIXUP
226 +void pci_enable_ath9k_fixup(unsigned slot, u32 offset) __init;
228 +#endif /* _PCI_ATH9K_FIXUP */