diff options
| -rw-r--r-- | target/linux/atheros/patches-2.6.28/100-board.patch | 441 | ||||
| -rw-r--r-- | target/linux/atheros/patches-2.6.28/105-ar2315_pci.patch | 298 |
2 files changed, 301 insertions, 438 deletions
diff --git a/target/linux/atheros/patches-2.6.28/100-board.patch b/target/linux/atheros/patches-2.6.28/100-board.patch index e4fe7c5c6..2f7bb5b19 100644 --- a/target/linux/atheros/patches-2.6.28/100-board.patch +++ b/target/linux/atheros/patches-2.6.28/100-board.patch @@ -46,7 +46,7 @@ core-$(CONFIG_MIPS_COBALT) += arch/mips/cobalt/ --- /dev/null +++ b/arch/mips/ar231x/Kconfig -@@ -0,0 +1,27 @@ +@@ -0,0 +1,17 @@ +config ATHEROS_AR5312 + bool "Atheros 5312/2312+ support" + depends on ATHEROS @@ -64,19 +64,9 @@ + select SYS_SUPPORTS_BIG_ENDIAN + select GENERIC_GPIO + default y -+ -+config ATHEROS_AR2315_PCI -+ bool "PCI support" -+ depends on ATHEROS_AR2315 -+ select HW_HAS_PCI -+ select PCI -+ select USB_ARCH_HAS_HCD -+ select USB_ARCH_HAS_OHCI -+ select USB_ARCH_HAS_EHCI -+ default y --- /dev/null +++ b/arch/mips/ar231x/Makefile -@@ -0,0 +1,14 @@ +@@ -0,0 +1,13 @@ +# +# This file is subject to the terms and conditions of the GNU General Public +# License. See the file "COPYING" in the main directory of this archive @@ -90,7 +80,6 @@ +obj-y += board.o prom.o devices.o +obj-$(CONFIG_ATHEROS_AR5312) += ar5312.o +obj-$(CONFIG_ATHEROS_AR2315) += ar2315.o -+obj-$(CONFIG_ATHEROS_AR2315_PCI) += pci.o --- /dev/null +++ b/arch/mips/ar231x/board.c @@ -0,0 +1,247 @@ @@ -382,171 +371,6 @@ +{ +} --- /dev/null -+++ b/arch/mips/ar231x/reset.c -@@ -0,0 +1,162 @@ -+#include <linux/module.h> -+#include <linux/timer.h> -+#include <linux/interrupt.h> -+#include <linux/kobject.h> -+#include <linux/workqueue.h> -+#include <linux/skbuff.h> -+#include <linux/netlink.h> -+#include <net/sock.h> -+#include <asm/uaccess.h> -+#include <ar231x.h> -+ -+#define AR531X_RESET_GPIO_IRQ (AR531X_GPIO_IRQ(bcfg->resetConfigGpio)) -+ -+struct event_t { -+ struct work_struct wq; -+ int set; -+ unsigned long jiffies; -+}; -+ -+static struct ar231x_boarddata *bcfg; -+static struct timer_list rst_button_timer; -+ -+extern struct sock *uevent_sock; -+extern u64 uevent_next_seqnum(void); -+static unsigned long seen; -+ -+static inline void add_msg(struct sk_buff *skb, char *msg) -+{ -+ char *scratch; -+ scratch = skb_put(skb, strlen(msg) + 1); -+ sprintf(scratch, msg); -+} -+ -+static void hotplug_button(struct work_struct *wq) -+{ -+ struct sk_buff *skb; -+ struct event_t *event; -+ size_t len; -+ char *scratch, *s; -+ char buf[128]; -+ -+ event = container_of(wq, struct event_t, wq); -+ if (!uevent_sock) -+ goto done; -+ -+ /* allocate message with the maximum possible size */ -+ s = event->set ? "pressed" : "released"; -+ len = strlen(s) + 2; -+ skb = alloc_skb(len + 2048, GFP_KERNEL); -+ if (!skb) -+ goto done; -+ -+ /* add header */ -+ scratch = skb_put(skb, len); -+ sprintf(scratch, "%s@",s); -+ -+ /* copy keys to our continuous event payload buffer */ -+ add_msg(skb, "HOME=/"); -+ add_msg(skb, "PATH=/sbin:/bin:/usr/sbin:/usr/bin"); -+ add_msg(skb, "SUBSYSTEM=button"); -+ add_msg(skb, "BUTTON=reset"); -+ add_msg(skb, (event->set ? "ACTION=pressed" : "ACTION=released")); -+ sprintf(buf, "SEEN=%ld", (event->jiffies - seen)/HZ); -+ add_msg(skb, buf); -+ snprintf(buf, 128, "SEQNUM=%llu", uevent_next_seqnum()); -+ add_msg(skb, buf); -+ -+ NETLINK_CB(skb).dst_group = 1; -+ netlink_broadcast(uevent_sock, skb, 0, 1, GFP_KERNEL); -+ -+done: -+ kfree(event); -+} -+ -+static int no_release_workaround = 1; -+ -+static void -+reset_button_poll(unsigned long unused) -+{ -+ struct event_t *event; -+ int gpio = ~0; -+ -+ if(!no_release_workaround) -+ return; -+ -+ DO_AR2315(gpio = sysRegRead(AR2315_GPIO_DI);) -+ gpio &= 1 << (AR531X_RESET_GPIO_IRQ - AR531X_GPIO_IRQ_BASE); -+ if(gpio) -+ { -+ rst_button_timer.expires = jiffies + (HZ / 4); -+ add_timer(&rst_button_timer); -+ } else { -+ event = (struct event_t *) kzalloc(sizeof(struct event_t), GFP_ATOMIC); -+ if (!event) -+ { -+ printk("Could not alloc hotplug event\n"); -+ return; -+ } -+ event->set = 0; -+ event->jiffies = jiffies; -+ INIT_WORK(&event->wq, (void *)(void *)hotplug_button); -+ schedule_work(&event->wq); -+ } -+} -+ -+static irqreturn_t button_handler(int irq, void *dev_id) -+{ -+ static int pressed = 0; -+ struct event_t *event; -+ u32 gpio = ~0; -+ -+ event = (struct event_t *) kzalloc(sizeof(struct event_t), GFP_ATOMIC); -+ if (!event) -+ return IRQ_NONE; -+ -+ pressed = !pressed; -+ -+ DO_AR2315(gpio = sysRegRead(AR2315_GPIO_DI);) -+ gpio &= 1 << (irq - AR531X_GPIO_IRQ_BASE); -+ -+ event->set = gpio; -+ if(!event->set) -+ no_release_workaround = 0; -+ -+ event->jiffies = jiffies; -+ -+ INIT_WORK(&event->wq, (void *)(void *)hotplug_button); -+ schedule_work(&event->wq); -+ -+ seen = jiffies; -+ if(event->set && no_release_workaround) -+ mod_timer(&rst_button_timer, jiffies + (HZ / 4)); -+ -+ return IRQ_HANDLED; -+} -+ -+void ar231x_disable_reset_button(void) -+{ -+ disable_irq(AR531X_RESET_GPIO_IRQ); -+} -+ -+EXPORT_SYMBOL(ar231x_disable_reset_button); -+ -+int __init ar231x_init_reset(void) -+{ -+ bcfg = (struct ar231x_boarddata *) board_config; -+ -+ seen = jiffies; -+ -+ init_timer(&rst_button_timer); -+ rst_button_timer.function = reset_button_poll; -+ rst_button_timer.expires = jiffies + HZ / 50; -+ add_timer(&rst_button_timer); -+ -+ request_irq(AR531X_RESET_GPIO_IRQ, &button_handler, IRQF_SAMPLE_RANDOM, "ar231x_reset", NULL); -+ -+ return 0; -+} -+ -+ -+ -+module_init(ar231x_init_reset); ---- /dev/null +++ b/arch/mips/include/asm/mach-ar231x/ar231x_platform.h @@ -0,0 +1,83 @@ +#ifndef __AR531X_PLATFORM_H @@ -2271,242 +2095,8 @@ +} + --- /dev/null -+++ b/arch/mips/ar231x/pci.c -@@ -0,0 +1,231 @@ -+/* -+ * This program is free software; you can redistribute it and/or -+ * modify it under the terms of the GNU General Public License -+ * as published by the Free Software Foundation; either version 2 -+ * of the License, or (at your option) any later version. -+ * -+ * This program is distributed in the hope that it will be useful, -+ * but WITHOUT ANY WARRANTY; without even the implied warranty of -+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -+ * GNU General Public License for more details. -+ * -+ * You should have received a copy of the GNU General Public License -+ * along with this program; if not, write to the Free Software -+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. -+ */ -+ -+#include <linux/types.h> -+#include <linux/pci.h> -+#include <linux/kernel.h> -+#include <linux/init.h> -+#include <linux/mm.h> -+#include <linux/spinlock.h> -+#include <linux/delay.h> -+#include <linux/irq.h> -+#include <asm/bootinfo.h> -+#include <asm/paccess.h> -+#include <asm/irq_cpu.h> -+#include <asm/io.h> -+#include <ar231x_platform.h> -+#include <ar231x.h> -+#include <ar2315_regs.h> -+ -+#define AR531X_MEM_BASE 0x80800000UL -+#define AR531X_MEM_SIZE 0x00ffffffUL -+#define AR531X_IO_SIZE 0x00007fffUL -+ -+#define IS_2315() (current_cpu_data.cputype == CPU_4KEC) -+ -+static unsigned long configspace; -+ -+static int config_access(int devfn, int where, int size, u32 *ptr, bool write) -+{ -+ unsigned long flags; -+ int func = PCI_FUNC(devfn); -+ int dev = PCI_SLOT(devfn); -+ u32 value = 0; -+ int err = 0; -+ u32 addr; -+ -+ if (((dev != 0) && (dev != 3)) || (func > 2)) -+ return PCIBIOS_DEVICE_NOT_FOUND; -+ -+ /* Select Configuration access */ -+ local_irq_save(flags); -+ ar231x_mask_reg(AR2315_PCI_MISC_CONFIG, 0, AR2315_PCIMISC_CFG_SEL); -+ mb(); -+ -+ addr = (u32) configspace + (1 << (13 + dev)) + (func << 8) + where; -+ if (size == 1) -+ addr ^= 0x3; -+ else if (size == 2) -+ addr ^= 0x2; -+ -+ if (write) { -+ value = *ptr; -+ if (size == 1) -+ err = put_dbe(value, (u8 *) addr); -+ else if (size == 2) -+ err = put_dbe(value, (u16 *) addr); -+ else if (size == 4) -+ err = put_dbe(value, (u32 *) addr); -+ } else { -+ if (size == 1) -+ err = get_dbe(value, (u8 *) addr); -+ else if (size == 2) -+ err = get_dbe(value, (u16 *) addr); -+ else if (size == 4) -+ err = get_dbe(value, (u32 *) addr); -+ if (err) -+ *ptr = 0xffffffff; -+ else -+ *ptr = value; -+ } -+ -+ /* Select Memory access */ -+ ar231x_mask_reg(AR2315_PCI_MISC_CONFIG, AR2315_PCIMISC_CFG_SEL, 0); -+ local_irq_restore(flags); -+ -+ return (err ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL); -+} -+ -+static int ar231x_pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 * value) -+{ -+ return config_access(devfn, where, size, value, 0); -+} -+ -+static int ar231x_pci_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value) -+{ -+ return config_access(devfn, where, size, &value, 1); -+} -+ -+struct pci_ops ar231x_pci_ops = { -+ .read = ar231x_pci_read, -+ .write = ar231x_pci_write, -+}; -+ -+static struct resource ar231x_mem_resource = { -+ .name = "AR531x PCI MEM", -+ .start = AR531X_MEM_BASE, -+ .end = AR531X_MEM_BASE + AR531X_MEM_SIZE - AR531X_IO_SIZE - 1 + 0x4000000, -+ .flags = IORESOURCE_MEM, -+}; -+ -+static struct resource ar231x_io_resource = { -+ .name = "AR531x PCI I/O", -+ .start = AR531X_MEM_BASE + AR531X_MEM_SIZE - AR531X_IO_SIZE, -+ .end = AR531X_MEM_BASE + AR531X_MEM_SIZE - 1, -+ .flags = IORESOURCE_IO, -+}; -+ -+struct pci_controller ar231x_pci_controller = { -+ .pci_ops = &ar231x_pci_ops, -+ .mem_resource = &ar231x_mem_resource, -+ .io_resource = &ar231x_io_resource, -+ .mem_offset = 0x00000000UL, -+ .io_offset = 0x00000000UL, -+}; -+ -+int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) -+{ -+ return AR2315_IRQ_LCBUS_PCI; -+} -+ -+int pcibios_plat_dev_init(struct pci_dev *dev) -+{ -+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 5); -+ pci_write_config_word(dev, 0x40, 0); -+ -+ /* Clear any pending Abort or external Interrupts -+ * and enable interrupt processing */ -+ ar231x_mask_reg(AR2315_PCI_INTEN_REG, AR2315_PCI_INT_ENABLE, 0); -+ ar231x_write_reg(AR2315_PCI_INT_STATUS, (AR2315_PCI_ABORT_INT | AR2315_PCI_EXT_INT)); -+ ar231x_write_reg(AR2315_PCI_INT_MASK, (AR2315_PCI_ABORT_INT | AR2315_PCI_EXT_INT)); -+ ar231x_mask_reg(AR2315_PCI_INTEN_REG, 0, AR2315_PCI_INT_ENABLE); -+ -+ return 0; -+} -+ -+static void -+ar2315_pci_fixup(struct pci_dev *dev) -+{ -+ unsigned int devfn = dev->devfn; -+ -+ if (dev->bus->number != 0) -+ return; -+ -+ /* Only fix up the PCI host settings */ -+ if ((PCI_SLOT(devfn) != 3) || (PCI_FUNC(devfn) != 0)) -+ return; -+ -+ /* Fix up MBARs */ -+ pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, HOST_PCI_MBAR0); -+ pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, HOST_PCI_MBAR1); -+ pci_write_config_dword(dev, PCI_BASE_ADDRESS_2, HOST_PCI_MBAR2); -+ pci_write_config_dword(dev, PCI_COMMAND, -+ PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_SPECIAL | -+ PCI_COMMAND_INVALIDATE | PCI_COMMAND_PARITY | PCI_COMMAND_SERR | -+ PCI_COMMAND_FAST_BACK); -+} -+DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, ar2315_pci_fixup); -+ -+static int __init -+ar2315_pci_init(void) -+{ -+ u32 reg; -+ -+ if (!IS_2315()) -+ return -ENODEV; -+ -+ configspace = (unsigned long) ioremap_nocache(0x80000000, 1*1024*1024); /* Remap PCI config space */ -+ ar231x_pci_controller.io_map_base = -+ (unsigned long) ioremap_nocache(AR531X_MEM_BASE + AR531X_MEM_SIZE, AR531X_IO_SIZE); -+ set_io_port_base(ar231x_pci_controller.io_map_base); /* PCI I/O space */ -+ -+ reg = ar231x_mask_reg(AR2315_RESET, 0, AR2315_RESET_PCIDMA); -+ msleep(10); -+ -+ reg &= ~AR2315_RESET_PCIDMA; -+ ar231x_write_reg(AR2315_RESET, reg); -+ msleep(10); -+ -+ ar231x_mask_reg(AR2315_ENDIAN_CTL, 0, -+ AR2315_CONFIG_PCIAHB | AR2315_CONFIG_PCIAHB_BRIDGE); -+ -+ ar231x_write_reg(AR2315_PCICLK, AR2315_PCICLK_PLLC_CLKM | -+ (AR2315_PCICLK_IN_FREQ_DIV_6 << AR2315_PCICLK_DIV_S)); -+ ar231x_mask_reg(AR2315_AHB_ARB_CTL, 0, AR2315_ARB_PCI); -+ ar231x_mask_reg(AR2315_IF_CTL, AR2315_IF_PCI_CLK_MASK | AR2315_IF_MASK, -+ AR2315_IF_PCI | AR2315_IF_PCI_HOST | AR2315_IF_PCI_INTR | -+ (AR2315_IF_PCI_CLK_OUTPUT_CLK << AR2315_IF_PCI_CLK_SHIFT)); -+ -+ /* Reset the PCI bus by setting bits 5-4 in PCI_MCFG */ -+ ar231x_mask_reg(AR2315_PCI_MISC_CONFIG, AR2315_PCIMISC_RST_MODE, -+ AR2315_PCIRST_LOW); -+ msleep(100); -+ -+ /* Bring the PCI out of reset */ -+ ar231x_mask_reg(AR2315_PCI_MISC_CONFIG, AR2315_PCIMISC_RST_MODE, -+ AR2315_PCIRST_HIGH | AR2315_PCICACHE_DIS | 0x8); -+ -+ ar231x_write_reg(AR2315_PCI_UNCACHE_CFG, -+ 0x1E | /* 1GB uncached */ -+ (1 << 5) | /* Enable uncached */ -+ (0x2 << 30) /* Base: 0x80000000 */ -+ ); -+ ar231x_read_reg(AR2315_PCI_UNCACHE_CFG); -+ -+ msleep(500); -+ -+ /* dirty hack - anyone with a datasheet that knows the memory map ? */ -+ ioport_resource.start = 0x10000000; -+ ioport_resource.end = 0xffffffff; -+ iomem_resource.start = 0x10000000; -+ iomem_resource.end = 0xffffffff; -+ -+ register_pci_controller(&ar231x_pci_controller); -+ -+ return 0; -+} -+ -+arch_initcall(ar2315_pci_init); ---- /dev/null +++ b/arch/mips/ar231x/ar2315.c -@@ -0,0 +1,688 @@ +@@ -0,0 +1,663 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive @@ -2570,27 +2160,6 @@ + do_IRQ(AR531X_GPIO_IRQ_BASE + fls(pend) - 1); +} + -+#ifdef CONFIG_ATHEROS_AR2315_PCI -+static inline void pci_abort_irq(void) -+{ -+ ar231x_write_reg(AR2315_PCI_INT_STATUS, AR2315_PCI_ABORT_INT); -+} -+ -+static inline void pci_ack_irq(void) -+{ -+ ar231x_write_reg(AR2315_PCI_INT_STATUS, AR2315_PCI_EXT_INT); -+} -+ -+void ar2315_pci_irq(int irq) -+{ -+ if (ar231x_read_reg(AR2315_PCI_INT_STATUS) == AR2315_PCI_ABORT_INT) -+ pci_abort_irq(); -+ else { -+ do_IRQ(irq); -+ pci_ack_irq(); -+ } -+} -+#endif /* CONFIG_ATHEROS_AR2315_PCI */ + +/* + * Called when an interrupt is received, this function @@ -2609,10 +2178,6 @@ + do_IRQ(AR2315_IRQ_WLAN0_INTRS); + else if (pending & CAUSEF_IP4) + do_IRQ(AR2315_IRQ_ENET0_INTRS); -+#ifdef CONFIG_ATHEROS_AR2315_PCI -+ else if (pending & CAUSEF_IP5) -+ ar2315_pci_irq(AR2315_IRQ_LCBUS_PCI); -+#endif + else if (pending & CAUSEF_IP2) { + unsigned int misc_intr = ar231x_read_reg(AR2315_ISR) & ar231x_read_reg(AR2315_IMR); + diff --git a/target/linux/atheros/patches-2.6.28/105-ar2315_pci.patch b/target/linux/atheros/patches-2.6.28/105-ar2315_pci.patch new file mode 100644 index 000000000..389a0ec21 --- /dev/null +++ b/target/linux/atheros/patches-2.6.28/105-ar2315_pci.patch @@ -0,0 +1,298 @@ +--- a/arch/mips/ar231x/Makefile ++++ b/arch/mips/ar231x/Makefile +@@ -11,3 +11,4 @@ + obj-y += board.o prom.o devices.o + obj-$(CONFIG_ATHEROS_AR5312) += ar5312.o + obj-$(CONFIG_ATHEROS_AR2315) += ar2315.o ++obj-$(CONFIG_ATHEROS_AR2315_PCI) += pci.o +--- /dev/null ++++ b/arch/mips/ar231x/pci.c +@@ -0,0 +1,231 @@ ++/* ++ * This program is free software; you can redistribute it and/or ++ * modify it under the terms of the GNU General Public License ++ * as published by the Free Software Foundation; either version 2 ++ * of the License, or (at your option) any later version. ++ * ++ * This program is distributed in the hope that it will be useful, ++ * but WITHOUT ANY WARRANTY; without even the implied warranty of ++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++ * GNU General Public License for more details. ++ * ++ * You should have received a copy of the GNU General Public License ++ * along with this program; if not, write to the Free Software ++ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ++ */ ++ ++#include <linux/types.h> ++#include <linux/pci.h> ++#include <linux/kernel.h> ++#include <linux/init.h> ++#include <linux/mm.h> ++#include <linux/spinlock.h> ++#include <linux/delay.h> ++#include <linux/irq.h> ++#include <asm/bootinfo.h> ++#include <asm/paccess.h> ++#include <asm/irq_cpu.h> ++#include <asm/io.h> ++#include <ar231x_platform.h> ++#include <ar231x.h> ++#include <ar2315_regs.h> ++ ++#define AR531X_MEM_BASE 0x80800000UL ++#define AR531X_MEM_SIZE 0x00ffffffUL ++#define AR531X_IO_SIZE 0x00007fffUL ++ ++#define IS_2315() (current_cpu_data.cputype == CPU_4KEC) ++ ++static unsigned long configspace; ++ ++static int config_access(int devfn, int where, int size, u32 *ptr, bool write) ++{ ++ unsigned long flags; ++ int func = PCI_FUNC(devfn); ++ int dev = PCI_SLOT(devfn); ++ u32 value = 0; ++ int err = 0; ++ u32 addr; ++ ++ if (((dev != 0) && (dev != 3)) || (func > 2)) ++ return PCIBIOS_DEVICE_NOT_FOUND; ++ ++ /* Select Configuration access */ ++ local_irq_save(flags); ++ ar231x_mask_reg(AR2315_PCI_MISC_CONFIG, 0, AR2315_PCIMISC_CFG_SEL); ++ mb(); ++ ++ addr = (u32) configspace + (1 << (13 + dev)) + (func << 8) + where; ++ if (size == 1) ++ addr ^= 0x3; ++ else if (size == 2) ++ addr ^= 0x2; ++ ++ if (write) { ++ value = *ptr; ++ if (size == 1) ++ err = put_dbe(value, (u8 *) addr); ++ else if (size == 2) ++ err = put_dbe(value, (u16 *) addr); ++ else if (size == 4) ++ err = put_dbe(value, (u32 *) addr); ++ } else { ++ if (size == 1) ++ err = get_dbe(value, (u8 *) addr); ++ else if (size == 2) ++ err = get_dbe(value, (u16 *) addr); ++ else if (size == 4) ++ err = get_dbe(value, (u32 *) addr); ++ if (err) ++ *ptr = 0xffffffff; ++ else ++ *ptr = value; ++ } ++ ++ /* Select Memory access */ ++ ar231x_mask_reg(AR2315_PCI_MISC_CONFIG, AR2315_PCIMISC_CFG_SEL, 0); ++ local_irq_restore(flags); ++ ++ return (err ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL); ++} ++ ++static int ar231x_pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 * value) ++{ ++ return config_access(devfn, where, size, value, 0); ++} ++ ++static int ar231x_pci_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 value) ++{ ++ return config_access(devfn, where, size, &value, 1); ++} ++ ++struct pci_ops ar231x_pci_ops = { ++ .read = ar231x_pci_read, ++ .write = ar231x_pci_write, ++}; ++ ++static struct resource ar231x_mem_resource = { ++ .name = "AR531x PCI MEM", ++ .start = AR531X_MEM_BASE, ++ .end = AR531X_MEM_BASE + AR531X_MEM_SIZE - AR531X_IO_SIZE - 1 + 0x4000000, ++ .flags = IORESOURCE_MEM, ++}; ++ ++static struct resource ar231x_io_resource = { ++ .name = "AR531x PCI I/O", ++ .start = AR531X_MEM_BASE + AR531X_MEM_SIZE - AR531X_IO_SIZE, ++ .end = AR531X_MEM_BASE + AR531X_MEM_SIZE - 1, ++ .flags = IORESOURCE_IO, ++}; ++ ++struct pci_controller ar231x_pci_controller = { ++ .pci_ops = &ar231x_pci_ops, ++ .mem_resource = &ar231x_mem_resource, ++ .io_resource = &ar231x_io_resource, ++ .mem_offset = 0x00000000UL, ++ .io_offset = 0x00000000UL, ++}; ++ ++int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) ++{ ++ return AR2315_IRQ_LCBUS_PCI; ++} ++ ++int pcibios_plat_dev_init(struct pci_dev *dev) ++{ ++ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, 5); ++ pci_write_config_word(dev, 0x40, 0); ++ ++ /* Clear any pending Abort or external Interrupts ++ * and enable interrupt processing */ ++ ar231x_mask_reg(AR2315_PCI_INTEN_REG, AR2315_PCI_INT_ENABLE, 0); ++ ar231x_write_reg(AR2315_PCI_INT_STATUS, (AR2315_PCI_ABORT_INT | AR2315_PCI_EXT_INT)); ++ ar231x_write_reg(AR2315_PCI_INT_MASK, (AR2315_PCI_ABORT_INT | AR2315_PCI_EXT_INT)); ++ ar231x_mask_reg(AR2315_PCI_INTEN_REG, 0, AR2315_PCI_INT_ENABLE); ++ ++ return 0; ++} ++ ++static void ++ar2315_pci_fixup(struct pci_dev *dev) ++{ ++ unsigned int devfn = dev->devfn; ++ ++ if (dev->bus->number != 0) ++ return; ++ ++ /* Only fix up the PCI host settings */ ++ if ((PCI_SLOT(devfn) != 3) || (PCI_FUNC(devfn) != 0)) ++ return; ++ ++ /* Fix up MBARs */ ++ pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, HOST_PCI_MBAR0); ++ pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, HOST_PCI_MBAR1); ++ pci_write_config_dword(dev, PCI_BASE_ADDRESS_2, HOST_PCI_MBAR2); ++ pci_write_config_dword(dev, PCI_COMMAND, ++ PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_SPECIAL | ++ PCI_COMMAND_INVALIDATE | PCI_COMMAND_PARITY | PCI_COMMAND_SERR | ++ PCI_COMMAND_FAST_BACK); ++} ++DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, ar2315_pci_fixup); ++ ++static int __init ++ar2315_pci_init(void) ++{ ++ u32 reg; ++ ++ if (!IS_2315()) ++ return -ENODEV; ++ ++ configspace = (unsigned long) ioremap_nocache(0x80000000, 1*1024*1024); /* Remap PCI config space */ ++ ar231x_pci_controller.io_map_base = ++ (unsigned long) ioremap_nocache(AR531X_MEM_BASE + AR531X_MEM_SIZE, AR531X_IO_SIZE); ++ set_io_port_base(ar231x_pci_controller.io_map_base); /* PCI I/O space */ ++ ++ reg = ar231x_mask_reg(AR2315_RESET, 0, AR2315_RESET_PCIDMA); ++ msleep(10); ++ ++ reg &= ~AR2315_RESET_PCIDMA; ++ ar231x_write_reg(AR2315_RESET, reg); ++ msleep(10); ++ ++ ar231x_mask_reg(AR2315_ENDIAN_CTL, 0, ++ AR2315_CONFIG_PCIAHB | AR2315_CONFIG_PCIAHB_BRIDGE); ++ ++ ar231x_write_reg(AR2315_PCICLK, AR2315_PCICLK_PLLC_CLKM | ++ (AR2315_PCICLK_IN_FREQ_DIV_6 << AR2315_PCICLK_DIV_S)); ++ ar231x_mask_reg(AR2315_AHB_ARB_CTL, 0, AR2315_ARB_PCI); ++ ar231x_mask_reg(AR2315_IF_CTL, AR2315_IF_PCI_CLK_MASK | AR2315_IF_MASK, ++ AR2315_IF_PCI | AR2315_IF_PCI_HOST | AR2315_IF_PCI_INTR | ++ (AR2315_IF_PCI_CLK_OUTPUT_CLK << AR2315_IF_PCI_CLK_SHIFT)); ++ ++ /* Reset the PCI bus by setting bits 5-4 in PCI_MCFG */ ++ ar231x_mask_reg(AR2315_PCI_MISC_CONFIG, AR2315_PCIMISC_RST_MODE, ++ AR2315_PCIRST_LOW); ++ msleep(100); ++ ++ /* Bring the PCI out of reset */ ++ ar231x_mask_reg(AR2315_PCI_MISC_CONFIG, AR2315_PCIMISC_RST_MODE, ++ AR2315_PCIRST_HIGH | AR2315_PCICACHE_DIS | 0x8); ++ ++ ar231x_write_reg(AR2315_PCI_UNCACHE_CFG, ++ 0x1E | /* 1GB uncached */ ++ (1 << 5) | /* Enable uncached */ ++ (0x2 << 30) /* Base: 0x80000000 */ ++ ); ++ ar231x_read_reg(AR2315_PCI_UNCACHE_CFG); ++ ++ msleep(500); ++ ++ /* dirty hack - anyone with a datasheet that knows the memory map ? */ ++ ioport_resource.start = 0x10000000; ++ ioport_resource.end = 0xffffffff; ++ iomem_resource.start = 0x10000000; ++ iomem_resource.end = 0xffffffff; ++ ++ register_pci_controller(&ar231x_pci_controller); ++ ++ return 0; ++} ++ ++arch_initcall(ar2315_pci_init); +--- a/arch/mips/ar231x/Kconfig ++++ b/arch/mips/ar231x/Kconfig +@@ -15,3 +15,13 @@ config ATHEROS_AR2315 + select SYS_SUPPORTS_BIG_ENDIAN + select GENERIC_GPIO + default y ++ ++config ATHEROS_AR2315_PCI ++ bool "PCI support" ++ depends on ATHEROS_AR2315 ++ select HW_HAS_PCI ++ select PCI ++ select USB_ARCH_HAS_HCD ++ select USB_ARCH_HAS_OHCI ++ select USB_ARCH_HAS_EHCI ++ default y +--- a/arch/mips/ar231x/ar2315.c ++++ b/arch/mips/ar231x/ar2315.c +@@ -61,6 +61,27 @@ static inline void ar2315_gpio_irq(void) + do_IRQ(AR531X_GPIO_IRQ_BASE + fls(pend) - 1); + } + ++#ifdef CONFIG_ATHEROS_AR2315_PCI ++static inline void pci_abort_irq(void) ++{ ++ ar231x_write_reg(AR2315_PCI_INT_STATUS, AR2315_PCI_ABORT_INT); ++} ++ ++static inline void pci_ack_irq(void) ++{ ++ ar231x_write_reg(AR2315_PCI_INT_STATUS, AR2315_PCI_EXT_INT); ++} ++ ++void ar2315_pci_irq(int irq) ++{ ++ if (ar231x_read_reg(AR2315_PCI_INT_STATUS) == AR2315_PCI_ABORT_INT) ++ pci_abort_irq(); ++ else { ++ do_IRQ(irq); ++ pci_ack_irq(); ++ } ++} ++#endif /* CONFIG_ATHEROS_AR2315_PCI */ + + /* + * Called when an interrupt is received, this function +@@ -79,6 +100,10 @@ ar2315_irq_dispatch(void) + do_IRQ(AR2315_IRQ_WLAN0_INTRS); + else if (pending & CAUSEF_IP4) + do_IRQ(AR2315_IRQ_ENET0_INTRS); ++#ifdef CONFIG_ATHEROS_AR2315_PCI ++ else if (pending & CAUSEF_IP5) ++ ar2315_pci_irq(AR2315_IRQ_LCBUS_PCI); ++#endif + else if (pending & CAUSEF_IP2) { + unsigned int misc_intr = ar231x_read_reg(AR2315_ISR) & ar231x_read_reg(AR2315_IMR); + |