diff options
Diffstat (limited to 'target/linux/atheros/patches-3.3/105-ar2315_pci.patch')
| -rw-r--r-- | target/linux/atheros/patches-3.3/105-ar2315_pci.patch | 294 |
1 files changed, 0 insertions, 294 deletions
diff --git a/target/linux/atheros/patches-3.3/105-ar2315_pci.patch b/target/linux/atheros/patches-3.3/105-ar2315_pci.patch deleted file mode 100644 index 7c72a8e417..0000000000 --- a/target/linux/atheros/patches-3.3/105-ar2315_pci.patch +++ /dev/null @@ -1,294 +0,0 @@ ---- a/arch/mips/ar231x/Makefile -+++ b/arch/mips/ar231x/Makefile -@@ -14,3 +14,4 @@ obj-$(CONFIG_EARLY_PRINTK) += early_prin - - obj-$(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 +1,230 @@ -+/* -+ * 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> -+#include "devices.h" -+ -+#define AR531X_MEM_BASE 0x80800000UL -+#define AR531X_MEM_SIZE 0x00ffffffUL -+#define AR531X_IO_SIZE 0x00007fffUL -+ -+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 (ar231x_devtype != DEV_TYPE_AR2315) -+ return -ENODEV; -+ -+ configspace = (unsigned long) ioremap_nocache(AR2315_PCIEXT, 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 -@@ -14,3 +14,10 @@ config ATHEROS_AR2315 - select SYS_SUPPORTS_32BIT_KERNEL - select SYS_SUPPORTS_BIG_ENDIAN - default y -+ -+config ATHEROS_AR2315_PCI -+ bool "PCI support" -+ depends on ATHEROS_AR2315 -+ select HW_HAS_PCI -+ select PCI -+ default y ---- a/arch/mips/ar231x/ar2315.c -+++ b/arch/mips/ar231x/ar2315.c -@@ -64,6 +64,27 @@ static inline void ar2315_gpio_irq(void) - do_IRQ(AR531X_GPIO_IRQ_BASE + bit); - } - -+#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 -@@ -82,6 +103,10 @@ 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); - |