+++ /dev/null
---- a/arch/mips/pci/Makefile
-+++ b/arch/mips/pci/Makefile
-@@ -19,6 +19,7 @@ obj-$(CONFIG_BCM47XX) += pci-bcm47xx.o
- obj-$(CONFIG_BCM63XX) += pci-bcm63xx.o fixup-bcm63xx.o \
- ops-bcm63xx.o
- obj-$(CONFIG_MIPS_ALCHEMY) += pci-alchemy.o
-+obj-$(CONFIG_PCI_AR2315) += pci-ar2315.o
- obj-$(CONFIG_SOC_AR71XX) += pci-ar71xx.o
- obj-$(CONFIG_PCI_AR724X) += pci-ar724x.o
- obj-$(CONFIG_MIPS_PCI_VIRTIO) += pci-virtio-guest.o
---- /dev/null
-+++ b/arch/mips/pci/pci-ar2315.c
-@@ -0,0 +1,511 @@
-+/*
-+ * 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, see <http://www.gnu.org/licenses/>.
-+ */
-+
-+/**
-+ * Both AR2315 and AR2316 chips have PCI interface unit, which supports DMA
-+ * and interrupt. PCI interface supports MMIO access method, but does not
-+ * seem to support I/O ports.
-+ *
-+ * Read/write operation in the region 0x80000000-0xBFFFFFFF causes
-+ * a memory read/write command on the PCI bus. 30 LSBs of address on
-+ * the bus are taken from memory read/write request and 2 MSBs are
-+ * determined by PCI unit configuration.
-+ *
-+ * To work with the configuration space instead of memory is necessary set
-+ * the CFG_SEL bit in the PCI_MISC_CONFIG register.
-+ *
-+ * Devices on the bus can perform DMA requests via chip BAR1. PCI host
-+ * controller BARs are programmend as if an external device is programmed.
-+ * Which means that during configuration, IDSEL pin of the chip should be
-+ * asserted.
-+ *
-+ * We know (and support) only one board that uses the PCI interface -
-+ * Fonera 2.0g (FON2202). It has a USB EHCI controller connected to the
-+ * AR2315 PCI bus. IDSEL pin of USB controller is connected to AD[13] line
-+ * and IDSEL pin of AR2315 is connected to AD[16] line.
-+ */
-+
-+#include <linux/types.h>
-+#include <linux/pci.h>
-+#include <linux/platform_device.h>
-+#include <linux/kernel.h>
-+#include <linux/init.h>
-+#include <linux/mm.h>
-+#include <linux/delay.h>
-+#include <linux/bitops.h>
-+#include <linux/irq.h>
-+#include <linux/irqdomain.h>
-+#include <linux/io.h>
-+#include <asm/paccess.h>
-+
-+/*
-+ * PCI Bus Interface Registers
-+ */
-+#define AR2315_PCI_1MS_REG 0x0008
-+
-+#define AR2315_PCI_1MS_MASK 0x3FFFF /* # of AHB clk cycles in 1ms */
-+
-+#define AR2315_PCI_MISC_CONFIG 0x000c
-+
-+#define AR2315_PCIMISC_TXD_EN 0x00000001 /* Enable TXD for fragments */
-+#define AR2315_PCIMISC_CFG_SEL 0x00000002 /* Mem or Config cycles */
-+#define AR2315_PCIMISC_GIG_MASK 0x0000000C /* bits 31-30 for pci req */
-+#define AR2315_PCIMISC_RST_MODE 0x00000030
-+#define AR2315_PCIRST_INPUT 0x00000000 /* 4:5=0 rst is input */
-+#define AR2315_PCIRST_LOW 0x00000010 /* 4:5=1 rst to GND */
-+#define AR2315_PCIRST_HIGH 0x00000020 /* 4:5=2 rst to VDD */
-+#define AR2315_PCIGRANT_EN 0x00000000 /* 6:7=0 early grant en */
-+#define AR2315_PCIGRANT_FRAME 0x00000040 /* 6:7=1 grant waits 4 frame */
-+#define AR2315_PCIGRANT_IDLE 0x00000080 /* 6:7=2 grant waits 4 idle */
-+#define AR2315_PCIGRANT_GAP 0x00000000 /* 6:7=2 grant waits 4 idle */
-+#define AR2315_PCICACHE_DIS 0x00001000 /* PCI external access cache
-+ * disable */
-+
-+#define AR2315_PCI_OUT_TSTAMP 0x0010
-+
-+#define AR2315_PCI_UNCACHE_CFG 0x0014
-+
-+#define AR2315_PCI_IN_EN 0x0100
-+
-+#define AR2315_PCI_IN_EN0 0x01 /* Enable chain 0 */
-+#define AR2315_PCI_IN_EN1 0x02 /* Enable chain 1 */
-+#define AR2315_PCI_IN_EN2 0x04 /* Enable chain 2 */
-+#define AR2315_PCI_IN_EN3 0x08 /* Enable chain 3 */
-+
-+#define AR2315_PCI_IN_DIS 0x0104
-+
-+#define AR2315_PCI_IN_DIS0 0x01 /* Disable chain 0 */
-+#define AR2315_PCI_IN_DIS1 0x02 /* Disable chain 1 */
-+#define AR2315_PCI_IN_DIS2 0x04 /* Disable chain 2 */
-+#define AR2315_PCI_IN_DIS3 0x08 /* Disable chain 3 */
-+
-+#define AR2315_PCI_IN_PTR 0x0200
-+
-+#define AR2315_PCI_OUT_EN 0x0400
-+
-+#define AR2315_PCI_OUT_EN0 0x01 /* Enable chain 0 */
-+
-+#define AR2315_PCI_OUT_DIS 0x0404
-+
-+#define AR2315_PCI_OUT_DIS0 0x01 /* Disable chain 0 */
-+
-+#define AR2315_PCI_OUT_PTR 0x0408
-+
-+/* PCI interrupt status (write one to clear) */
-+#define AR2315_PCI_ISR 0x0500
-+
-+#define AR2315_PCI_INT_TX 0x00000001 /* Desc In Completed */
-+#define AR2315_PCI_INT_TXOK 0x00000002 /* Desc In OK */
-+#define AR2315_PCI_INT_TXERR 0x00000004 /* Desc In ERR */
-+#define AR2315_PCI_INT_TXEOL 0x00000008 /* Desc In End-of-List */
-+#define AR2315_PCI_INT_RX 0x00000010 /* Desc Out Completed */
-+#define AR2315_PCI_INT_RXOK 0x00000020 /* Desc Out OK */
-+#define AR2315_PCI_INT_RXERR 0x00000040 /* Desc Out ERR */
-+#define AR2315_PCI_INT_RXEOL 0x00000080 /* Desc Out EOL */
-+#define AR2315_PCI_INT_TXOOD 0x00000200 /* Desc In Out-of-Desc */
-+#define AR2315_PCI_INT_DESCMASK 0x0000FFFF /* Desc Mask */
-+#define AR2315_PCI_INT_EXT 0x02000000 /* Extern PCI INTA */
-+#define AR2315_PCI_INT_ABORT 0x04000000 /* PCI bus abort event */
-+
-+/* PCI interrupt mask */
-+#define AR2315_PCI_IMR 0x0504
-+
-+/* Global PCI interrupt enable */
-+#define AR2315_PCI_IER 0x0508
-+
-+#define AR2315_PCI_IER_DISABLE 0x00 /* disable pci interrupts */
-+#define AR2315_PCI_IER_ENABLE 0x01 /* enable pci interrupts */
-+
-+#define AR2315_PCI_HOST_IN_EN 0x0800
-+#define AR2315_PCI_HOST_IN_DIS 0x0804
-+#define AR2315_PCI_HOST_IN_PTR 0x0810
-+#define AR2315_PCI_HOST_OUT_EN 0x0900
-+#define AR2315_PCI_HOST_OUT_DIS 0x0904
-+#define AR2315_PCI_HOST_OUT_PTR 0x0908
-+
-+/*
-+ * PCI interrupts, which share IP5
-+ * Keep ordered according to AR2315_PCI_INT_XXX bits
-+ */
-+#define AR2315_PCI_IRQ_EXT 25
-+#define AR2315_PCI_IRQ_ABORT 26
-+#define AR2315_PCI_IRQ_COUNT 27
-+
-+/* Arbitrary size of memory region to access the configuration space */
-+#define AR2315_PCI_CFG_SIZE 0x00100000
-+
-+#define AR2315_PCI_HOST_SLOT 3
-+#define AR2315_PCI_HOST_DEVID ((0xff18 << 16) | PCI_VENDOR_ID_ATHEROS)
-+
-+/* ??? access BAR */
-+#define AR2315_PCI_HOST_MBAR0 0x10000000
-+/* RAM access BAR */
-+#define AR2315_PCI_HOST_MBAR1 AR2315_PCI_HOST_SDRAM_BASEADDR
-+/* ??? access BAR */
-+#define AR2315_PCI_HOST_MBAR2 0x30000000
-+
-+struct ar2315_pci_ctrl {
-+ void __iomem *cfg_mem;
-+ void __iomem *mmr_mem;
-+ unsigned irq;
-+ unsigned irq_ext;
-+ struct irq_domain *domain;
-+ struct pci_controller pci_ctrl;
-+ struct resource mem_res;
-+ struct resource io_res;
-+};
-+
-+static inline struct ar2315_pci_ctrl *ar2315_pci_bus_to_apc(struct pci_bus *bus)
-+{
-+ struct pci_controller *hose = bus->sysdata;
-+
-+ return container_of(hose, struct ar2315_pci_ctrl, pci_ctrl);
-+}
-+
-+static inline u32 ar2315_pci_reg_read(struct ar2315_pci_ctrl *apc, u32 reg)
-+{
-+ return __raw_readl(apc->mmr_mem + reg);
-+}
-+
-+static inline void ar2315_pci_reg_write(struct ar2315_pci_ctrl *apc, u32 reg,
-+ u32 val)
-+{
-+ __raw_writel(val, apc->mmr_mem + reg);
-+}
-+
-+static inline void ar2315_pci_reg_mask(struct ar2315_pci_ctrl *apc, u32 reg,
-+ u32 mask, u32 val)
-+{
-+ u32 ret = ar2315_pci_reg_read(apc, reg);
-+
-+ ret &= ~mask;
-+ ret |= val;
-+ ar2315_pci_reg_write(apc, reg, ret);
-+}
-+
-+static int ar2315_pci_cfg_access(struct ar2315_pci_ctrl *apc, unsigned devfn,
-+ int where, int size, u32 *ptr, bool write)
-+{
-+ int func = PCI_FUNC(devfn);
-+ int dev = PCI_SLOT(devfn);
-+ u32 addr = (1 << (13 + dev)) | (func << 8) | (where & ~3);
-+ u32 mask = 0xffffffff >> 8 * (4 - size);
-+ u32 sh = (where & 3) * 8;
-+ u32 value, isr;
-+
-+ /* Prevent access past the remapped area */
-+ if (addr >= AR2315_PCI_CFG_SIZE || dev > 18)
-+ return PCIBIOS_DEVICE_NOT_FOUND;
-+
-+ /* Clear pending errors */
-+ ar2315_pci_reg_write(apc, AR2315_PCI_ISR, AR2315_PCI_INT_ABORT);
-+ /* Select Configuration access */
-+ ar2315_pci_reg_mask(apc, AR2315_PCI_MISC_CONFIG, 0,
-+ AR2315_PCIMISC_CFG_SEL);
-+
-+ mb(); /* PCI must see space change before we begin */
-+
-+ value = __raw_readl(apc->cfg_mem + addr);
-+
-+ isr = ar2315_pci_reg_read(apc, AR2315_PCI_ISR);
-+
-+ if (isr & AR2315_PCI_INT_ABORT)
-+ goto exit_err;
-+
-+ if (write) {
-+ value = (value & ~(mask << sh)) | *ptr << sh;
-+ __raw_writel(value, apc->cfg_mem + addr);
-+ isr = ar2315_pci_reg_read(apc, AR2315_PCI_ISR);
-+ if (isr & AR2315_PCI_INT_ABORT)
-+ goto exit_err;
-+ } else {
-+ *ptr = (value >> sh) & mask;
-+ }
-+
-+ goto exit;
-+
-+exit_err:
-+ ar2315_pci_reg_write(apc, AR2315_PCI_ISR, AR2315_PCI_INT_ABORT);
-+ if (!write)
-+ *ptr = 0xffffffff;
-+
-+exit:
-+ /* Select Memory access */
-+ ar2315_pci_reg_mask(apc, AR2315_PCI_MISC_CONFIG, AR2315_PCIMISC_CFG_SEL,
-+ 0);
-+
-+ return isr & AR2315_PCI_INT_ABORT ? PCIBIOS_DEVICE_NOT_FOUND :
-+ PCIBIOS_SUCCESSFUL;
-+}
-+
-+static inline int ar2315_pci_local_cfg_rd(struct ar2315_pci_ctrl *apc,
-+ unsigned devfn, int where, u32 *val)
-+{
-+ return ar2315_pci_cfg_access(apc, devfn, where, sizeof(u32), val,
-+ false);
-+}
-+
-+static inline int ar2315_pci_local_cfg_wr(struct ar2315_pci_ctrl *apc,
-+ unsigned devfn, int where, u32 val)
-+{
-+ return ar2315_pci_cfg_access(apc, devfn, where, sizeof(u32), &val,
-+ true);
-+}
-+
-+static int ar2315_pci_cfg_read(struct pci_bus *bus, unsigned devfn, int where,
-+ int size, u32 *value)
-+{
-+ struct ar2315_pci_ctrl *apc = ar2315_pci_bus_to_apc(bus);
-+
-+ if (PCI_SLOT(devfn) == AR2315_PCI_HOST_SLOT)
-+ return PCIBIOS_DEVICE_NOT_FOUND;
-+
-+ return ar2315_pci_cfg_access(apc, devfn, where, size, value, false);
-+}
-+
-+static int ar2315_pci_cfg_write(struct pci_bus *bus, unsigned devfn, int where,
-+ int size, u32 value)
-+{
-+ struct ar2315_pci_ctrl *apc = ar2315_pci_bus_to_apc(bus);
-+
-+ if (PCI_SLOT(devfn) == AR2315_PCI_HOST_SLOT)
-+ return PCIBIOS_DEVICE_NOT_FOUND;
-+
-+ return ar2315_pci_cfg_access(apc, devfn, where, size, &value, true);
-+}
-+
-+static struct pci_ops ar2315_pci_ops = {
-+ .read = ar2315_pci_cfg_read,
-+ .write = ar2315_pci_cfg_write,
-+};
-+
-+static int ar2315_pci_host_setup(struct ar2315_pci_ctrl *apc)
-+{
-+ unsigned devfn = PCI_DEVFN(AR2315_PCI_HOST_SLOT, 0);
-+ int res;
-+ u32 id;
-+
-+ res = ar2315_pci_local_cfg_rd(apc, devfn, PCI_VENDOR_ID, &id);
-+ if (res != PCIBIOS_SUCCESSFUL || id != AR2315_PCI_HOST_DEVID)
-+ return -ENODEV;
-+
-+ /* Program MBARs */
-+ ar2315_pci_local_cfg_wr(apc, devfn, PCI_BASE_ADDRESS_0,
-+ AR2315_PCI_HOST_MBAR0);
-+ ar2315_pci_local_cfg_wr(apc, devfn, PCI_BASE_ADDRESS_1,
-+ AR2315_PCI_HOST_MBAR1);
-+ ar2315_pci_local_cfg_wr(apc, devfn, PCI_BASE_ADDRESS_2,
-+ AR2315_PCI_HOST_MBAR2);
-+
-+ /* Run */
-+ ar2315_pci_local_cfg_wr(apc, devfn, PCI_COMMAND, PCI_COMMAND_MEMORY |
-+ PCI_COMMAND_MASTER | PCI_COMMAND_SPECIAL |
-+ PCI_COMMAND_INVALIDATE | PCI_COMMAND_PARITY |
-+ PCI_COMMAND_SERR | PCI_COMMAND_FAST_BACK);
-+
-+ return 0;
-+}
-+
-+static void ar2315_pci_irq_handler(unsigned irq, struct irq_desc *desc)
-+{
-+ struct ar2315_pci_ctrl *apc = irq_get_handler_data(irq);
-+ u32 pending = ar2315_pci_reg_read(apc, AR2315_PCI_ISR) &
-+ ar2315_pci_reg_read(apc, AR2315_PCI_IMR);
-+ unsigned pci_irq = 0;
-+
-+ if (pending)
-+ pci_irq = irq_find_mapping(apc->domain, __ffs(pending));
-+
-+ if (pci_irq)
-+ generic_handle_irq(pci_irq);
-+ else
-+ spurious_interrupt();
-+}
-+
-+static void ar2315_pci_irq_mask(struct irq_data *d)
-+{
-+ struct ar2315_pci_ctrl *apc = irq_data_get_irq_chip_data(d);
-+
-+ ar2315_pci_reg_mask(apc, AR2315_PCI_IMR, BIT(d->hwirq), 0);
-+}
-+
-+static void ar2315_pci_irq_mask_ack(struct irq_data *d)
-+{
-+ struct ar2315_pci_ctrl *apc = irq_data_get_irq_chip_data(d);
-+ u32 m = BIT(d->hwirq);
-+
-+ ar2315_pci_reg_mask(apc, AR2315_PCI_IMR, m, 0);
-+ ar2315_pci_reg_write(apc, AR2315_PCI_ISR, m);
-+}
-+
-+static void ar2315_pci_irq_unmask(struct irq_data *d)
-+{
-+ struct ar2315_pci_ctrl *apc = irq_data_get_irq_chip_data(d);
-+
-+ ar2315_pci_reg_mask(apc, AR2315_PCI_IMR, 0, BIT(d->hwirq));
-+}
-+
-+static struct irq_chip ar2315_pci_irq_chip = {
-+ .name = "AR2315-PCI",
-+ .irq_mask = ar2315_pci_irq_mask,
-+ .irq_mask_ack = ar2315_pci_irq_mask_ack,
-+ .irq_unmask = ar2315_pci_irq_unmask,
-+};
-+
-+static int ar2315_pci_irq_map(struct irq_domain *d, unsigned irq,
-+ irq_hw_number_t hw)
-+{
-+ irq_set_chip_and_handler(irq, &ar2315_pci_irq_chip, handle_level_irq);
-+ irq_set_chip_data(irq, d->host_data);
-+ return 0;
-+}
-+
-+static struct irq_domain_ops ar2315_pci_irq_domain_ops = {
-+ .map = ar2315_pci_irq_map,
-+};
-+
-+static void ar2315_pci_irq_init(struct ar2315_pci_ctrl *apc)
-+{
-+ ar2315_pci_reg_mask(apc, AR2315_PCI_IER, AR2315_PCI_IER_ENABLE, 0);
-+ ar2315_pci_reg_mask(apc, AR2315_PCI_IMR, (AR2315_PCI_INT_ABORT |
-+ AR2315_PCI_INT_EXT), 0);
-+
-+ apc->irq_ext = irq_create_mapping(apc->domain, AR2315_PCI_IRQ_EXT);
-+
-+ irq_set_chained_handler(apc->irq, ar2315_pci_irq_handler);
-+ irq_set_handler_data(apc->irq, apc);
-+
-+ /* Clear any pending Abort or external Interrupts
-+ * and enable interrupt processing */
-+ ar2315_pci_reg_write(apc, AR2315_PCI_ISR, AR2315_PCI_INT_ABORT |
-+ AR2315_PCI_INT_EXT);
-+ ar2315_pci_reg_mask(apc, AR2315_PCI_IER, 0, AR2315_PCI_IER_ENABLE);
-+}
-+
-+static int ar2315_pci_probe(struct platform_device *pdev)
-+{
-+ struct ar2315_pci_ctrl *apc;
-+ struct device *dev = &pdev->dev;
-+ struct resource *res;
-+ int irq, err;
-+
-+ apc = devm_kzalloc(dev, sizeof(*apc), GFP_KERNEL);
-+ if (!apc)
-+ return -ENOMEM;
-+
-+ irq = platform_get_irq(pdev, 0);
-+ if (irq < 0)
-+ return -EINVAL;
-+ apc->irq = irq;
-+
-+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
-+ "ar2315-pci-ctrl");
-+ apc->mmr_mem = devm_ioremap_resource(dev, res);
-+ if (IS_ERR(apc->mmr_mem))
-+ return PTR_ERR(apc->mmr_mem);
-+
-+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
-+ "ar2315-pci-ext");
-+ if (!res)
-+ return -EINVAL;
-+
-+ apc->mem_res.name = "AR2315 PCI mem space";
-+ apc->mem_res.parent = res;
-+ apc->mem_res.start = res->start;
-+ apc->mem_res.end = res->end;
-+ apc->mem_res.flags = IORESOURCE_MEM;
-+
-+ /* Remap PCI config space */
-+ apc->cfg_mem = devm_ioremap_nocache(dev, res->start,
-+ AR2315_PCI_CFG_SIZE);
-+ if (!apc->cfg_mem) {
-+ dev_err(dev, "failed to remap PCI config space\n");
-+ return -ENOMEM;
-+ }
-+
-+ /* Reset the PCI bus by setting bits 5-4 in PCI_MCFG */
-+ ar2315_pci_reg_mask(apc, AR2315_PCI_MISC_CONFIG,
-+ AR2315_PCIMISC_RST_MODE,
-+ AR2315_PCIRST_LOW);
-+ msleep(100);
-+
-+ /* Bring the PCI out of reset */
-+ ar2315_pci_reg_mask(apc, AR2315_PCI_MISC_CONFIG,
-+ AR2315_PCIMISC_RST_MODE,
-+ AR2315_PCIRST_HIGH | AR2315_PCICACHE_DIS | 0x8);
-+
-+ ar2315_pci_reg_write(apc, AR2315_PCI_UNCACHE_CFG,
-+ 0x1E | /* 1GB uncached */
-+ (1 << 5) | /* Enable uncached */
-+ (0x2 << 30) /* Base: 0x80000000 */);
-+ ar2315_pci_reg_read(apc, AR2315_PCI_UNCACHE_CFG);
-+
-+ msleep(500);
-+
-+ err = ar2315_pci_host_setup(apc);
-+ if (err)
-+ return err;
-+
-+ apc->domain = irq_domain_add_linear(NULL, AR2315_PCI_IRQ_COUNT,
-+ &ar2315_pci_irq_domain_ops, apc);
-+ if (!apc->domain) {
-+ dev_err(dev, "failed to add IRQ domain\n");
-+ return -ENOMEM;
-+ }
-+
-+ ar2315_pci_irq_init(apc);
-+
-+ /* PCI controller does not support I/O ports */
-+ apc->io_res.name = "AR2315 IO space";
-+ apc->io_res.start = 0;
-+ apc->io_res.end = 0;
-+ apc->io_res.flags = IORESOURCE_IO,
-+
-+ apc->pci_ctrl.pci_ops = &ar2315_pci_ops;
-+ apc->pci_ctrl.mem_resource = &apc->mem_res,
-+ apc->pci_ctrl.io_resource = &apc->io_res,
-+
-+ register_pci_controller(&apc->pci_ctrl);
-+
-+ dev_info(dev, "register PCI controller\n");
-+
-+ return 0;
-+}
-+
-+static struct platform_driver ar2315_pci_driver = {
-+ .probe = ar2315_pci_probe,
-+ .driver = {
-+ .name = "ar2315-pci",
-+ .owner = THIS_MODULE,
-+ },
-+};
-+
-+static int __init ar2315_pci_init(void)
-+{
-+ return platform_driver_register(&ar2315_pci_driver);
-+}
-+arch_initcall(ar2315_pci_init);
-+
-+int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
-+{
-+ struct ar2315_pci_ctrl *apc = ar2315_pci_bus_to_apc(dev->bus);
-+
-+ return slot ? 0 : apc->irq_ext;
-+}
-+
-+int pcibios_plat_dev_init(struct pci_dev *dev)
-+{
-+ return 0;
-+}
---- a/arch/mips/ath25/Kconfig
-+++ b/arch/mips/ath25/Kconfig
-@@ -7,3 +7,10 @@ config SOC_AR2315
- bool "Atheros AR2315+ SoC support"
- depends on ATH25
- default y
-+
-+config PCI_AR2315
-+ bool "Atheros AR2315 PCI controller support"
-+ depends on SOC_AR2315
-+ select HW_HAS_PCI
-+ select PCI
-+ default y
---- a/arch/mips/ath25/ar2315.c
-+++ b/arch/mips/ath25/ar2315.c
-@@ -134,6 +134,10 @@ static void ar2315_irq_dispatch(void)
-
- if (pending & CAUSEF_IP3)
- do_IRQ(AR2315_IRQ_WLAN0);
-+#ifdef CONFIG_PCI_AR2315
-+ else if (pending & CAUSEF_IP5)
-+ do_IRQ(AR2315_IRQ_LCBUS_PCI);
-+#endif
- else if (pending & CAUSEF_IP2)
- do_IRQ(AR2315_IRQ_MISC);
- else if (pending & CAUSEF_IP7)
-@@ -299,10 +303,62 @@ void __init ar2315_plat_mem_setup(void)
- _machine_restart = ar2315_restart;
- }
-
-+#ifdef CONFIG_PCI_AR2315
-+static struct resource ar2315_pci_res[] = {
-+ {
-+ .name = "ar2315-pci-ctrl",
-+ .flags = IORESOURCE_MEM,
-+ .start = AR2315_PCI_BASE,
-+ .end = AR2315_PCI_BASE + AR2315_PCI_SIZE - 1,
-+ },
-+ {
-+ .name = "ar2315-pci-ext",
-+ .flags = IORESOURCE_MEM,
-+ .start = AR2315_PCI_EXT_BASE,
-+ .end = AR2315_PCI_EXT_BASE + AR2315_PCI_EXT_SIZE - 1,
-+ },
-+ {
-+ .name = "ar2315-pci",
-+ .flags = IORESOURCE_IRQ,
-+ .start = AR2315_IRQ_LCBUS_PCI,
-+ .end = AR2315_IRQ_LCBUS_PCI,
-+ },
-+};
-+#endif
-+
- void __init ar2315_arch_init(void)
- {
- unsigned irq = irq_create_mapping(ar2315_misc_irq_domain,
- AR2315_MISC_IRQ_UART0);
-
- ath25_serial_setup(AR2315_UART0_BASE, irq, ar2315_apb_frequency());
-+
-+#ifdef CONFIG_PCI_AR2315
-+ if (ath25_soc == ATH25_SOC_AR2315) {
-+ /* Reset PCI DMA logic */
-+ ar2315_rst_reg_mask(AR2315_RESET, 0, AR2315_RESET_PCIDMA);
-+ msleep(20);
-+ ar2315_rst_reg_mask(AR2315_RESET, AR2315_RESET_PCIDMA, 0);
-+ msleep(20);
-+
-+ /* Configure endians */
-+ ar2315_rst_reg_mask(AR2315_ENDIAN_CTL, 0, AR2315_CONFIG_PCIAHB |
-+ AR2315_CONFIG_PCIAHB_BRIDGE);
-+
-+ /* Configure as PCI host with DMA */
-+ ar2315_rst_reg_write(AR2315_PCICLK, AR2315_PCICLK_PLLC_CLKM |
-+ (AR2315_PCICLK_IN_FREQ_DIV_6 <<
-+ AR2315_PCICLK_DIV_S));
-+ ar2315_rst_reg_mask(AR2315_AHB_ARB_CTL, 0, AR2315_ARB_PCI);
-+ ar2315_rst_reg_mask(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));
-+
-+ platform_device_register_simple("ar2315-pci", -1,
-+ ar2315_pci_res,
-+ ARRAY_SIZE(ar2315_pci_res));
-+ }
-+#endif
- }
projects / openwrt / svn-archive / archive.git / blobdiff