547 lines
16 KiB
Diff
547 lines
16 KiB
Diff
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From 08127ed36bad367903591bbf0f244179683ccb28 Mon Sep 17 00:00:00 2001
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From: John Crispin <blogic@openwrt.org>
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Date: Wed, 30 Mar 2011 09:27:49 +0200
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Subject: [PATCH 03/13] MIPS: Lantiq: Add PCI controller support.
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The Lantiq family of SoCs have a EBU (External Bus Unit). This patch adds
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the driver that allows us to use the EBU as a PCI controller. In order for
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PCI to work the EBU is set to endianess swap all the data. In addition we
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need to make use of SWAP_IO_SPACE for device->host DMA to work.
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The clock of the PCI works in several modes (internal/external). If this
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is not configured correctly the SoC will hang.
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Signed-off-by: John Crispin <blogic@openwrt.org>
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Signed-off-by: Ralph Hempel <ralph.hempel@lantiq.com>
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Cc: linux-mips@linux-mips.org
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Patchwork: https://patchwork.linux-mips.org/patch/2250/
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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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---
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.../mips/include/asm/mach-lantiq/lantiq_platform.h | 46 +++
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arch/mips/pci/Makefile | 1 +
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arch/mips/pci/ops-lantiq.c | 116 ++++++++
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arch/mips/pci/pci-lantiq.c | 297 ++++++++++++++++++++
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arch/mips/pci/pci-lantiq.h | 18 ++
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5 files changed, 478 insertions(+), 0 deletions(-)
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create mode 100644 arch/mips/include/asm/mach-lantiq/lantiq_platform.h
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create mode 100644 arch/mips/pci/ops-lantiq.c
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create mode 100644 arch/mips/pci/pci-lantiq.c
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create mode 100644 arch/mips/pci/pci-lantiq.h
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diff --git a/arch/mips/include/asm/mach-lantiq/lantiq_platform.h b/arch/mips/include/asm/mach-lantiq/lantiq_platform.h
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new file mode 100644
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index 0000000..1f1dba6
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--- /dev/null
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+++ b/arch/mips/include/asm/mach-lantiq/lantiq_platform.h
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@@ -0,0 +1,46 @@
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+/*
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License version 2 as published
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+ * by the Free Software Foundation.
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+ *
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+ * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
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+ */
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+
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+#ifndef _LANTIQ_PLATFORM_H__
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+#define _LANTIQ_PLATFORM_H__
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+
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+#include <linux/mtd/partitions.h>
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+
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+/* struct used to pass info to the pci core */
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+enum {
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+ PCI_CLOCK_INT = 0,
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+ PCI_CLOCK_EXT
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+};
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+
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+#define PCI_EXIN0 0x0001
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+#define PCI_EXIN1 0x0002
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+#define PCI_EXIN2 0x0004
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+#define PCI_EXIN3 0x0008
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+#define PCI_EXIN4 0x0010
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+#define PCI_EXIN5 0x0020
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+#define PCI_EXIN_MAX 6
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+
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+#define PCI_GNT1 0x0040
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+#define PCI_GNT2 0x0080
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+#define PCI_GNT3 0x0100
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+#define PCI_GNT4 0x0200
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+
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+#define PCI_REQ1 0x0400
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+#define PCI_REQ2 0x0800
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+#define PCI_REQ3 0x1000
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+#define PCI_REQ4 0x2000
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+#define PCI_REQ_SHIFT 10
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+#define PCI_REQ_MASK 0xf
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+
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+struct ltq_pci_data {
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+ int clock;
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+ int gpio;
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+ int irq[16];
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+};
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+
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+#endif
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diff --git a/arch/mips/pci/Makefile b/arch/mips/pci/Makefile
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index f0d5329..4df8799 100644
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--- a/arch/mips/pci/Makefile
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+++ b/arch/mips/pci/Makefile
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@@ -41,6 +41,7 @@ obj-$(CONFIG_SIBYTE_SB1250) += fixup-sb1250.o pci-sb1250.o
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obj-$(CONFIG_SIBYTE_BCM112X) += fixup-sb1250.o pci-sb1250.o
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obj-$(CONFIG_SIBYTE_BCM1x80) += pci-bcm1480.o pci-bcm1480ht.o
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obj-$(CONFIG_SNI_RM) += fixup-sni.o ops-sni.o
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+obj-$(CONFIG_SOC_XWAY) += pci-lantiq.o ops-lantiq.o
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obj-$(CONFIG_TANBAC_TB0219) += fixup-tb0219.o
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obj-$(CONFIG_TANBAC_TB0226) += fixup-tb0226.o
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obj-$(CONFIG_TANBAC_TB0287) += fixup-tb0287.o
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diff --git a/arch/mips/pci/ops-lantiq.c b/arch/mips/pci/ops-lantiq.c
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new file mode 100644
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index 0000000..1f2afb5
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--- /dev/null
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+++ b/arch/mips/pci/ops-lantiq.c
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@@ -0,0 +1,116 @@
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+/*
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License version 2 as published
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+ * by the Free Software Foundation.
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+ *
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+ * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
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+ */
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+
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+#include <linux/types.h>
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+#include <linux/pci.h>
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+#include <linux/kernel.h>
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+#include <linux/init.h>
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+#include <linux/delay.h>
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+#include <linux/mm.h>
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+#include <asm/addrspace.h>
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+#include <linux/vmalloc.h>
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+
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+#include <lantiq_soc.h>
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+
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+#include "pci-lantiq.h"
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+
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+#define LTQ_PCI_CFG_BUSNUM_SHF 16
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+#define LTQ_PCI_CFG_DEVNUM_SHF 11
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+#define LTQ_PCI_CFG_FUNNUM_SHF 8
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+
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+#define PCI_ACCESS_READ 0
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+#define PCI_ACCESS_WRITE 1
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+
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+static int ltq_pci_config_access(unsigned char access_type, struct pci_bus *bus,
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+ unsigned int devfn, unsigned int where, u32 *data)
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+{
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+ unsigned long cfg_base;
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+ unsigned long flags;
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+ u32 temp;
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+
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+ /* we support slot from 0 to 15 dev_fn & 0x68 (AD29) is the
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+ SoC itself */
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+ if ((bus->number != 0) || ((devfn & 0xf8) > 0x78)
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+ || ((devfn & 0xf8) == 0) || ((devfn & 0xf8) == 0x68))
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+ return 1;
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+
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+ spin_lock_irqsave(&ebu_lock, flags);
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+
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+ cfg_base = (unsigned long) ltq_pci_mapped_cfg;
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+ cfg_base |= (bus->number << LTQ_PCI_CFG_BUSNUM_SHF) | (devfn <<
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+ LTQ_PCI_CFG_FUNNUM_SHF) | (where & ~0x3);
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+
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+ /* Perform access */
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+ if (access_type == PCI_ACCESS_WRITE) {
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+ ltq_w32(swab32(*data), ((u32 *)cfg_base));
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+ } else {
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+ *data = ltq_r32(((u32 *)(cfg_base)));
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+ *data = swab32(*data);
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+ }
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+ wmb();
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+
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+ /* clean possible Master abort */
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+ cfg_base = (unsigned long) ltq_pci_mapped_cfg;
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+ cfg_base |= (0x0 << LTQ_PCI_CFG_FUNNUM_SHF) + 4;
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+ temp = ltq_r32(((u32 *)(cfg_base)));
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+ temp = swab32(temp);
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+ cfg_base = (unsigned long) ltq_pci_mapped_cfg;
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+ cfg_base |= (0x68 << LTQ_PCI_CFG_FUNNUM_SHF) + 4;
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+ ltq_w32(temp, ((u32 *)cfg_base));
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+
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+ spin_unlock_irqrestore(&ebu_lock, flags);
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+
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+ if (((*data) == 0xffffffff) && (access_type == PCI_ACCESS_READ))
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+ return 1;
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+
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+ return 0;
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+}
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+
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+int ltq_pci_read_config_dword(struct pci_bus *bus, unsigned int devfn,
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+ int where, int size, u32 *val)
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+{
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+ u32 data = 0;
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+
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+ if (ltq_pci_config_access(PCI_ACCESS_READ, bus, devfn, where, &data))
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+ return PCIBIOS_DEVICE_NOT_FOUND;
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+
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+ if (size == 1)
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+ *val = (data >> ((where & 3) << 3)) & 0xff;
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+ else if (size == 2)
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+ *val = (data >> ((where & 3) << 3)) & 0xffff;
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+ else
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+ *val = data;
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+
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+ return PCIBIOS_SUCCESSFUL;
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+}
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+
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+int ltq_pci_write_config_dword(struct pci_bus *bus, unsigned int devfn,
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+ int where, int size, u32 val)
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+{
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+ u32 data = 0;
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+
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+ if (size == 4) {
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+ data = val;
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+ } else {
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+ if (ltq_pci_config_access(PCI_ACCESS_READ, bus,
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+ devfn, where, &data))
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+ return PCIBIOS_DEVICE_NOT_FOUND;
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+
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+ if (size == 1)
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+ data = (data & ~(0xff << ((where & 3) << 3))) |
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+ (val << ((where & 3) << 3));
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+ else if (size == 2)
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+ data = (data & ~(0xffff << ((where & 3) << 3))) |
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+ (val << ((where & 3) << 3));
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+ }
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+
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+ if (ltq_pci_config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data))
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+ return PCIBIOS_DEVICE_NOT_FOUND;
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+
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+ return PCIBIOS_SUCCESSFUL;
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+}
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diff --git a/arch/mips/pci/pci-lantiq.c b/arch/mips/pci/pci-lantiq.c
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new file mode 100644
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index 0000000..603d749
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--- /dev/null
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+++ b/arch/mips/pci/pci-lantiq.c
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@@ -0,0 +1,297 @@
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+/*
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License version 2 as published
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+ * by the Free Software Foundation.
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+ *
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+ * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
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+ */
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+
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+#include <linux/types.h>
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+#include <linux/pci.h>
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+#include <linux/kernel.h>
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+#include <linux/init.h>
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+#include <linux/delay.h>
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+#include <linux/mm.h>
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+#include <linux/vmalloc.h>
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+#include <linux/platform_device.h>
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+
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+#include <asm/pci.h>
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+#include <asm/gpio.h>
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+#include <asm/addrspace.h>
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+
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+#include <lantiq_soc.h>
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+#include <lantiq_irq.h>
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+#include <lantiq_platform.h>
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+
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+#include "pci-lantiq.h"
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+
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+#define LTQ_PCI_CFG_BASE 0x17000000
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+#define LTQ_PCI_CFG_SIZE 0x00008000
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+#define LTQ_PCI_MEM_BASE 0x18000000
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+#define LTQ_PCI_MEM_SIZE 0x02000000
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+#define LTQ_PCI_IO_BASE 0x1AE00000
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+#define LTQ_PCI_IO_SIZE 0x00200000
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+
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+#define PCI_CR_FCI_ADDR_MAP0 0x00C0
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+#define PCI_CR_FCI_ADDR_MAP1 0x00C4
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+#define PCI_CR_FCI_ADDR_MAP2 0x00C8
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+#define PCI_CR_FCI_ADDR_MAP3 0x00CC
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+#define PCI_CR_FCI_ADDR_MAP4 0x00D0
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+#define PCI_CR_FCI_ADDR_MAP5 0x00D4
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+#define PCI_CR_FCI_ADDR_MAP6 0x00D8
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+#define PCI_CR_FCI_ADDR_MAP7 0x00DC
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+#define PCI_CR_CLK_CTRL 0x0000
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+#define PCI_CR_PCI_MOD 0x0030
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+#define PCI_CR_PC_ARB 0x0080
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+#define PCI_CR_FCI_ADDR_MAP11hg 0x00E4
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+#define PCI_CR_BAR11MASK 0x0044
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+#define PCI_CR_BAR12MASK 0x0048
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+#define PCI_CR_BAR13MASK 0x004C
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+#define PCI_CS_BASE_ADDR1 0x0010
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+#define PCI_CR_PCI_ADDR_MAP11 0x0064
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+#define PCI_CR_FCI_BURST_LENGTH 0x00E8
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+#define PCI_CR_PCI_EOI 0x002C
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+#define PCI_CS_STS_CMD 0x0004
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+
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+#define PCI_MASTER0_REQ_MASK_2BITS 8
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+#define PCI_MASTER1_REQ_MASK_2BITS 10
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+#define PCI_MASTER2_REQ_MASK_2BITS 12
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+#define INTERNAL_ARB_ENABLE_BIT 0
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+
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+#define LTQ_CGU_IFCCR 0x0018
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+#define LTQ_CGU_PCICR 0x0034
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+
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+#define ltq_pci_w32(x, y) ltq_w32((x), ltq_pci_membase + (y))
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+#define ltq_pci_r32(x) ltq_r32(ltq_pci_membase + (x))
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+
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+#define ltq_pci_cfg_w32(x, y) ltq_w32((x), ltq_pci_mapped_cfg + (y))
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+#define ltq_pci_cfg_r32(x) ltq_r32(ltq_pci_mapped_cfg + (x))
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+
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+struct ltq_pci_gpio_map {
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+ int pin;
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+ int alt0;
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+ int alt1;
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+ int dir;
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+ char *name;
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+};
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+
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+/* the pci core can make use of the following gpios */
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+static struct ltq_pci_gpio_map ltq_pci_gpio_map[] = {
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+ { 0, 1, 0, 0, "pci-exin0" },
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+ { 1, 1, 0, 0, "pci-exin1" },
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+ { 2, 1, 0, 0, "pci-exin2" },
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+ { 39, 1, 0, 0, "pci-exin3" },
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+ { 10, 1, 0, 0, "pci-exin4" },
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+ { 9, 1, 0, 0, "pci-exin5" },
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+ { 30, 1, 0, 1, "pci-gnt1" },
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+ { 23, 1, 0, 1, "pci-gnt2" },
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+ { 19, 1, 0, 1, "pci-gnt3" },
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+ { 38, 1, 0, 1, "pci-gnt4" },
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+ { 29, 1, 0, 0, "pci-req1" },
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+ { 31, 1, 0, 0, "pci-req2" },
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+ { 3, 1, 0, 0, "pci-req3" },
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+ { 37, 1, 0, 0, "pci-req4" },
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+};
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+
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+__iomem void *ltq_pci_mapped_cfg;
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+static __iomem void *ltq_pci_membase;
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+
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+int (*ltqpci_plat_dev_init)(struct pci_dev *dev) = NULL;
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+
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+/* Since the PCI REQ pins can be reused for other functionality, make it
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+ possible to exclude those from interpretation by the PCI controller */
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+static int ltq_pci_req_mask = 0xf;
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+
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+static int *ltq_pci_irq_map;
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+
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+struct pci_ops ltq_pci_ops = {
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+ .read = ltq_pci_read_config_dword,
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+ .write = ltq_pci_write_config_dword
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+};
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+
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+static struct resource pci_io_resource = {
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+ .name = "pci io space",
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+ .start = LTQ_PCI_IO_BASE,
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+ .end = LTQ_PCI_IO_BASE + LTQ_PCI_IO_SIZE - 1,
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+ .flags = IORESOURCE_IO
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+};
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+
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+static struct resource pci_mem_resource = {
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+ .name = "pci memory space",
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+ .start = LTQ_PCI_MEM_BASE,
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+ .end = LTQ_PCI_MEM_BASE + LTQ_PCI_MEM_SIZE - 1,
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+ .flags = IORESOURCE_MEM
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+};
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+
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+static struct pci_controller ltq_pci_controller = {
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+ .pci_ops = <q_pci_ops,
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+ .mem_resource = &pci_mem_resource,
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+ .mem_offset = 0x00000000UL,
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+ .io_resource = &pci_io_resource,
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+ .io_offset = 0x00000000UL,
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+};
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+
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+int pcibios_plat_dev_init(struct pci_dev *dev)
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+{
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+ if (ltqpci_plat_dev_init)
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+ return ltqpci_plat_dev_init(dev);
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+
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|
+ return 0;
|
||
|
+}
|
||
|
+
|
||
|
+static u32 ltq_calc_bar11mask(void)
|
||
|
+{
|
||
|
+ u32 mem, bar11mask;
|
||
|
+
|
||
|
+ /* BAR11MASK value depends on available memory on system. */
|
||
|
+ mem = num_physpages * PAGE_SIZE;
|
||
|
+ bar11mask = (0x0ffffff0 & ~((1 << (fls(mem) - 1)) - 1)) | 8;
|
||
|
+
|
||
|
+ return bar11mask;
|
||
|
+}
|
||
|
+
|
||
|
+static void ltq_pci_setup_gpio(int gpio)
|
||
|
+{
|
||
|
+ int i;
|
||
|
+ for (i = 0; i < ARRAY_SIZE(ltq_pci_gpio_map); i++) {
|
||
|
+ if (gpio & (1 << i)) {
|
||
|
+ ltq_gpio_request(ltq_pci_gpio_map[i].pin,
|
||
|
+ ltq_pci_gpio_map[i].alt0,
|
||
|
+ ltq_pci_gpio_map[i].alt1,
|
||
|
+ ltq_pci_gpio_map[i].dir,
|
||
|
+ ltq_pci_gpio_map[i].name);
|
||
|
+ }
|
||
|
+ }
|
||
|
+ ltq_gpio_request(21, 0, 0, 1, "pci-reset");
|
||
|
+ ltq_pci_req_mask = (gpio >> PCI_REQ_SHIFT) & PCI_REQ_MASK;
|
||
|
+}
|
||
|
+
|
||
|
+static int __devinit ltq_pci_startup(struct ltq_pci_data *conf)
|
||
|
+{
|
||
|
+ u32 temp_buffer;
|
||
|
+
|
||
|
+ /* set clock to 33Mhz */
|
||
|
+ ltq_cgu_w32(ltq_cgu_r32(LTQ_CGU_IFCCR) & ~0xf00000, LTQ_CGU_IFCCR);
|
||
|
+ ltq_cgu_w32(ltq_cgu_r32(LTQ_CGU_IFCCR) | 0x800000, LTQ_CGU_IFCCR);
|
||
|
+
|
||
|
+ /* external or internal clock ? */
|
||
|
+ if (conf->clock) {
|
||
|
+ ltq_cgu_w32(ltq_cgu_r32(LTQ_CGU_IFCCR) & ~(1 << 16),
|
||
|
+ LTQ_CGU_IFCCR);
|
||
|
+ ltq_cgu_w32((1 << 30), LTQ_CGU_PCICR);
|
||
|
+ } else {
|
||
|
+ ltq_cgu_w32(ltq_cgu_r32(LTQ_CGU_IFCCR) | (1 << 16),
|
||
|
+ LTQ_CGU_IFCCR);
|
||
|
+ ltq_cgu_w32((1 << 31) | (1 << 30), LTQ_CGU_PCICR);
|
||
|
+ }
|
||
|
+
|
||
|
+ /* setup pci clock and gpis used by pci */
|
||
|
+ ltq_pci_setup_gpio(conf->gpio);
|
||
|
+
|
||
|
+ /* enable auto-switching between PCI and EBU */
|
||
|
+ ltq_pci_w32(0xa, PCI_CR_CLK_CTRL);
|
||
|
+
|
||
|
+ /* busy, i.e. configuration is not done, PCI access has to be retried */
|
||
|
+ ltq_pci_w32(ltq_pci_r32(PCI_CR_PCI_MOD) & ~(1 << 24), PCI_CR_PCI_MOD);
|
||
|
+ wmb();
|
||
|
+ /* BUS Master/IO/MEM access */
|
||
|
+ ltq_pci_cfg_w32(ltq_pci_cfg_r32(PCI_CS_STS_CMD) | 7, PCI_CS_STS_CMD);
|
||
|
+
|
||
|
+ /* enable external 2 PCI masters */
|
||
|
+ temp_buffer = ltq_pci_r32(PCI_CR_PC_ARB);
|
||
|
+ temp_buffer &= (~(ltq_pci_req_mask << 16));
|
||
|
+ /* enable internal arbiter */
|
||
|
+ temp_buffer |= (1 << INTERNAL_ARB_ENABLE_BIT);
|
||
|
+ /* enable internal PCI master reqest */
|
||
|
+ temp_buffer &= (~(3 << PCI_MASTER0_REQ_MASK_2BITS));
|
||
|
+
|
||
|
+ /* enable EBU request */
|
||
|
+ temp_buffer &= (~(3 << PCI_MASTER1_REQ_MASK_2BITS));
|
||
|
+
|
||
|
+ /* enable all external masters request */
|
||
|
+ temp_buffer &= (~(3 << PCI_MASTER2_REQ_MASK_2BITS));
|
||
|
+ ltq_pci_w32(temp_buffer, PCI_CR_PC_ARB);
|
||
|
+ wmb();
|
||
|
+
|
||
|
+ /* setup BAR memory regions */
|
||
|
+ ltq_pci_w32(0x18000000, PCI_CR_FCI_ADDR_MAP0);
|
||
|
+ ltq_pci_w32(0x18400000, PCI_CR_FCI_ADDR_MAP1);
|
||
|
+ ltq_pci_w32(0x18800000, PCI_CR_FCI_ADDR_MAP2);
|
||
|
+ ltq_pci_w32(0x18c00000, PCI_CR_FCI_ADDR_MAP3);
|
||
|
+ ltq_pci_w32(0x19000000, PCI_CR_FCI_ADDR_MAP4);
|
||
|
+ ltq_pci_w32(0x19400000, PCI_CR_FCI_ADDR_MAP5);
|
||
|
+ ltq_pci_w32(0x19800000, PCI_CR_FCI_ADDR_MAP6);
|
||
|
+ ltq_pci_w32(0x19c00000, PCI_CR_FCI_ADDR_MAP7);
|
||
|
+ ltq_pci_w32(0x1ae00000, PCI_CR_FCI_ADDR_MAP11hg);
|
||
|
+ ltq_pci_w32(ltq_calc_bar11mask(), PCI_CR_BAR11MASK);
|
||
|
+ ltq_pci_w32(0, PCI_CR_PCI_ADDR_MAP11);
|
||
|
+ ltq_pci_w32(0, PCI_CS_BASE_ADDR1);
|
||
|
+ /* both TX and RX endian swap are enabled */
|
||
|
+ ltq_pci_w32(ltq_pci_r32(PCI_CR_PCI_EOI) | 3, PCI_CR_PCI_EOI);
|
||
|
+ wmb();
|
||
|
+ ltq_pci_w32(ltq_pci_r32(PCI_CR_BAR12MASK) | 0x80000000,
|
||
|
+ PCI_CR_BAR12MASK);
|
||
|
+ ltq_pci_w32(ltq_pci_r32(PCI_CR_BAR13MASK) | 0x80000000,
|
||
|
+ PCI_CR_BAR13MASK);
|
||
|
+ /*use 8 dw burst length */
|
||
|
+ ltq_pci_w32(0x303, PCI_CR_FCI_BURST_LENGTH);
|
||
|
+ ltq_pci_w32(ltq_pci_r32(PCI_CR_PCI_MOD) | (1 << 24), PCI_CR_PCI_MOD);
|
||
|
+ wmb();
|
||
|
+
|
||
|
+ /* setup irq line */
|
||
|
+ ltq_ebu_w32(ltq_ebu_r32(LTQ_EBU_PCC_CON) | 0xc, LTQ_EBU_PCC_CON);
|
||
|
+ ltq_ebu_w32(ltq_ebu_r32(LTQ_EBU_PCC_IEN) | 0x10, LTQ_EBU_PCC_IEN);
|
||
|
+
|
||
|
+ /* toggle reset pin */
|
||
|
+ __gpio_set_value(21, 0);
|
||
|
+ wmb();
|
||
|
+ mdelay(1);
|
||
|
+ __gpio_set_value(21, 1);
|
||
|
+ return 0;
|
||
|
+}
|
||
|
+
|
||
|
+int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
|
||
|
+{
|
||
|
+ if (ltq_pci_irq_map[slot])
|
||
|
+ return ltq_pci_irq_map[slot];
|
||
|
+ printk(KERN_ERR "ltq_pci: trying to map irq for unknown slot %d\n",
|
||
|
+ slot);
|
||
|
+
|
||
|
+ return 0;
|
||
|
+}
|
||
|
+
|
||
|
+static int __devinit ltq_pci_probe(struct platform_device *pdev)
|
||
|
+{
|
||
|
+ struct ltq_pci_data *ltq_pci_data =
|
||
|
+ (struct ltq_pci_data *) pdev->dev.platform_data;
|
||
|
+ pci_probe_only = 0;
|
||
|
+ ltq_pci_irq_map = ltq_pci_data->irq;
|
||
|
+ ltq_pci_membase = ioremap_nocache(PCI_CR_BASE_ADDR, PCI_CR_SIZE);
|
||
|
+ ltq_pci_mapped_cfg =
|
||
|
+ ioremap_nocache(LTQ_PCI_CFG_BASE, LTQ_PCI_CFG_BASE);
|
||
|
+ ltq_pci_controller.io_map_base =
|
||
|
+ (unsigned long)ioremap(LTQ_PCI_IO_BASE, LTQ_PCI_IO_SIZE - 1);
|
||
|
+ ltq_pci_startup(ltq_pci_data);
|
||
|
+ register_pci_controller(<q_pci_controller);
|
||
|
+
|
||
|
+ return 0;
|
||
|
+}
|
||
|
+
|
||
|
+static struct platform_driver
|
||
|
+ltq_pci_driver = {
|
||
|
+ .probe = ltq_pci_probe,
|
||
|
+ .driver = {
|
||
|
+ .name = "ltq_pci",
|
||
|
+ .owner = THIS_MODULE,
|
||
|
+ },
|
||
|
+};
|
||
|
+
|
||
|
+int __init pcibios_init(void)
|
||
|
+{
|
||
|
+ int ret = platform_driver_register(<q_pci_driver);
|
||
|
+ if (ret)
|
||
|
+ printk(KERN_INFO "ltq_pci: Error registering platfom driver!");
|
||
|
+ return ret;
|
||
|
+}
|
||
|
+
|
||
|
+arch_initcall(pcibios_init);
|
||
|
diff --git a/arch/mips/pci/pci-lantiq.h b/arch/mips/pci/pci-lantiq.h
|
||
|
new file mode 100644
|
||
|
index 0000000..66bf6cd
|
||
|
--- /dev/null
|
||
|
+++ b/arch/mips/pci/pci-lantiq.h
|
||
|
@@ -0,0 +1,18 @@
|
||
|
+/*
|
||
|
+ * 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.
|
||
|
+ *
|
||
|
+ * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
|
||
|
+ */
|
||
|
+
|
||
|
+#ifndef _LTQ_PCI_H__
|
||
|
+#define _LTQ_PCI_H__
|
||
|
+
|
||
|
+extern __iomem void *ltq_pci_mapped_cfg;
|
||
|
+extern int ltq_pci_read_config_dword(struct pci_bus *bus,
|
||
|
+ unsigned int devfn, int where, int size, u32 *val);
|
||
|
+extern int ltq_pci_write_config_dword(struct pci_bus *bus,
|
||
|
+ unsigned int devfn, int where, int size, u32 val);
|
||
|
+
|
||
|
+#endif
|
||
|
--
|
||
|
1.7.2.3
|
||
|
|