From ba364fc752daeded072a5ef31e43b84cb1f9e5fd Mon Sep 17 00:00:00 2001
From: Andrew Lunn <andrew@lunn.ch>
Date: Thu, 10 Jul 2014 23:36:21 +0200
Subject: ARM: Kirkwood: Remove mach-kirkwood

Now that all boards have been converted to DT and all the support code
lives in mach-mvebu, we can remove mach-kirkwood.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lkml.kernel.org/r/1405028192-9623-2-git-send-email-andrew@lunn.ch
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
---
 arch/arm/mach-kirkwood/pcie.c | 296 ------------------------------------------
 1 file changed, 296 deletions(-)
 delete mode 100644 arch/arm/mach-kirkwood/pcie.c

(limited to 'arch/arm/mach-kirkwood/pcie.c')

diff --git a/arch/arm/mach-kirkwood/pcie.c b/arch/arm/mach-kirkwood/pcie.c
deleted file mode 100644
index 12d86f39f380..000000000000
--- a/arch/arm/mach-kirkwood/pcie.c
+++ /dev/null
@@ -1,296 +0,0 @@
-/*
- * arch/arm/mach-kirkwood/pcie.c
- *
- * PCIe functions for Marvell Kirkwood SoCs
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/slab.h>
-#include <linux/clk.h>
-#include <linux/mbus.h>
-#include <video/vga.h>
-#include <asm/irq.h>
-#include <asm/mach/pci.h>
-#include <plat/pcie.h>
-#include <mach/bridge-regs.h>
-#include "common.h"
-
-/* These can go away once Kirkwood uses the mvebu-mbus DT binding */
-#define KIRKWOOD_MBUS_PCIE0_MEM_TARGET    0x4
-#define KIRKWOOD_MBUS_PCIE0_MEM_ATTR      0xe8
-#define KIRKWOOD_MBUS_PCIE0_IO_TARGET     0x4
-#define KIRKWOOD_MBUS_PCIE0_IO_ATTR       0xe0
-#define KIRKWOOD_MBUS_PCIE1_MEM_TARGET    0x4
-#define KIRKWOOD_MBUS_PCIE1_MEM_ATTR      0xd8
-#define KIRKWOOD_MBUS_PCIE1_IO_TARGET     0x4
-#define KIRKWOOD_MBUS_PCIE1_IO_ATTR       0xd0
-
-static void kirkwood_enable_pcie_clk(const char *port)
-{
-	struct clk *clk;
-
-	clk = clk_get_sys("pcie", port);
-	if (IS_ERR(clk)) {
-		pr_err("PCIE clock %s missing\n", port);
-		return;
-	}
-	clk_prepare_enable(clk);
-	clk_put(clk);
-}
-
-/* This function is called very early in the boot when probing the
-   hardware to determine what we actually are, and what rate tclk is
-   ticking at. Hence calling kirkwood_enable_pcie_clk() is not
-   possible since the clk tree has not been created yet. */
-void kirkwood_enable_pcie(void)
-{
-	u32 curr = readl(CLOCK_GATING_CTRL);
-	if (!(curr & CGC_PEX0))
-		writel(curr | CGC_PEX0, CLOCK_GATING_CTRL);
-}
-
-void kirkwood_pcie_id(u32 *dev, u32 *rev)
-{
-	kirkwood_enable_pcie();
-	*dev = orion_pcie_dev_id(PCIE_VIRT_BASE);
-	*rev = orion_pcie_rev(PCIE_VIRT_BASE);
-}
-
-struct pcie_port {
-	u8			root_bus_nr;
-	void __iomem		*base;
-	spinlock_t		conf_lock;
-	int			irq;
-	struct resource		res;
-};
-
-static int pcie_port_map[2];
-static int num_pcie_ports;
-
-static int pcie_valid_config(struct pcie_port *pp, int bus, int dev)
-{
-	/*
-	 * Don't go out when trying to access --
-	 * 1. nonexisting device on local bus
-	 * 2. where there's no device connected (no link)
-	 */
-	if (bus == pp->root_bus_nr && dev == 0)
-		return 1;
-
-	if (!orion_pcie_link_up(pp->base))
-		return 0;
-
-	if (bus == pp->root_bus_nr && dev != 1)
-		return 0;
-
-	return 1;
-}
-
-
-/*
- * PCIe config cycles are done by programming the PCIE_CONF_ADDR register
- * and then reading the PCIE_CONF_DATA register. Need to make sure these
- * transactions are atomic.
- */
-
-static int pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where,
-			int size, u32 *val)
-{
-	struct pci_sys_data *sys = bus->sysdata;
-	struct pcie_port *pp = sys->private_data;
-	unsigned long flags;
-	int ret;
-
-	if (pcie_valid_config(pp, bus->number, PCI_SLOT(devfn)) == 0) {
-		*val = 0xffffffff;
-		return PCIBIOS_DEVICE_NOT_FOUND;
-	}
-
-	spin_lock_irqsave(&pp->conf_lock, flags);
-	ret = orion_pcie_rd_conf(pp->base, bus, devfn, where, size, val);
-	spin_unlock_irqrestore(&pp->conf_lock, flags);
-
-	return ret;
-}
-
-static int pcie_wr_conf(struct pci_bus *bus, u32 devfn,
-			int where, int size, u32 val)
-{
-	struct pci_sys_data *sys = bus->sysdata;
-	struct pcie_port *pp = sys->private_data;
-	unsigned long flags;
-	int ret;
-
-	if (pcie_valid_config(pp, bus->number, PCI_SLOT(devfn)) == 0)
-		return PCIBIOS_DEVICE_NOT_FOUND;
-
-	spin_lock_irqsave(&pp->conf_lock, flags);
-	ret = orion_pcie_wr_conf(pp->base, bus, devfn, where, size, val);
-	spin_unlock_irqrestore(&pp->conf_lock, flags);
-
-	return ret;
-}
-
-static struct pci_ops pcie_ops = {
-	.read = pcie_rd_conf,
-	.write = pcie_wr_conf,
-};
-
-static void __init pcie0_ioresources_init(struct pcie_port *pp)
-{
-	pp->base = PCIE_VIRT_BASE;
-	pp->irq	= IRQ_KIRKWOOD_PCIE;
-
-	/*
-	 * IORESOURCE_MEM
-	 */
-	pp->res.name = "PCIe 0 MEM";
-	pp->res.start = KIRKWOOD_PCIE_MEM_PHYS_BASE;
-	pp->res.end = pp->res.start + KIRKWOOD_PCIE_MEM_SIZE - 1;
-	pp->res.flags = IORESOURCE_MEM;
-}
-
-static void __init pcie1_ioresources_init(struct pcie_port *pp)
-{
-	pp->base = PCIE1_VIRT_BASE;
-	pp->irq	= IRQ_KIRKWOOD_PCIE1;
-
-	/*
-	 * IORESOURCE_MEM
-	 */
-	pp->res.name = "PCIe 1 MEM";
-	pp->res.start = KIRKWOOD_PCIE1_MEM_PHYS_BASE;
-	pp->res.end = pp->res.start + KIRKWOOD_PCIE1_MEM_SIZE - 1;
-	pp->res.flags = IORESOURCE_MEM;
-}
-
-static int __init kirkwood_pcie_setup(int nr, struct pci_sys_data *sys)
-{
-	struct pcie_port *pp;
-	int index;
-
-	if (nr >= num_pcie_ports)
-		return 0;
-
-	index = pcie_port_map[nr];
-	pr_info("PCI: bus%d uses PCIe port %d\n", sys->busnr, index);
-
-	pp = kzalloc(sizeof(*pp), GFP_KERNEL);
-	if (!pp)
-		panic("PCIe: failed to allocate pcie_port data");
-	sys->private_data = pp;
-	pp->root_bus_nr = sys->busnr;
-	spin_lock_init(&pp->conf_lock);
-
-	switch (index) {
-	case 0:
-		kirkwood_enable_pcie_clk("0");
-		pcie0_ioresources_init(pp);
-		pci_ioremap_io(SZ_64K * sys->busnr, KIRKWOOD_PCIE_IO_PHYS_BASE);
-		break;
-	case 1:
-		kirkwood_enable_pcie_clk("1");
-		pcie1_ioresources_init(pp);
-		pci_ioremap_io(SZ_64K * sys->busnr,
-			       KIRKWOOD_PCIE1_IO_PHYS_BASE);
-		break;
-	default:
-		panic("PCIe setup: invalid controller %d", index);
-	}
-
-	if (request_resource(&iomem_resource, &pp->res))
-		panic("Request PCIe%d Memory resource failed\n", index);
-
-	pci_add_resource_offset(&sys->resources, &pp->res, sys->mem_offset);
-
-	/*
-	 * Generic PCIe unit setup.
-	 */
-	orion_pcie_set_local_bus_nr(pp->base, sys->busnr);
-
-	orion_pcie_setup(pp->base);
-
-	return 1;
-}
-
-/*
- * The root complex has a hardwired class of PCI_CLASS_MEMORY_OTHER, when it
- * is operating as a root complex this needs to be switched to
- * PCI_CLASS_BRIDGE_HOST or Linux will errantly try to process the BAR's on
- * the device. Decoding setup is handled by the orion code.
- */
-static void rc_pci_fixup(struct pci_dev *dev)
-{
-	if (dev->bus->parent == NULL && dev->devfn == 0) {
-		int i;
-
-		dev->class &= 0xff;
-		dev->class |= PCI_CLASS_BRIDGE_HOST << 8;
-		for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
-			dev->resource[i].start = 0;
-			dev->resource[i].end   = 0;
-			dev->resource[i].flags = 0;
-		}
-	}
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL, PCI_ANY_ID, rc_pci_fixup);
-
-static int __init kirkwood_pcie_map_irq(const struct pci_dev *dev, u8 slot,
-	u8 pin)
-{
-	struct pci_sys_data *sys = dev->sysdata;
-	struct pcie_port *pp = sys->private_data;
-
-	return pp->irq;
-}
-
-static struct hw_pci kirkwood_pci __initdata = {
-	.setup		= kirkwood_pcie_setup,
-	.map_irq	= kirkwood_pcie_map_irq,
-	.ops            = &pcie_ops,
-};
-
-static void __init add_pcie_port(int index, void __iomem *base)
-{
-	pcie_port_map[num_pcie_ports++] = index;
-	pr_info("Kirkwood PCIe port %d: link %s\n", index,
-		orion_pcie_link_up(base) ? "up" : "down");
-}
-
-void __init kirkwood_pcie_init(unsigned int portmask)
-{
-	mvebu_mbus_add_window_remap_by_id(KIRKWOOD_MBUS_PCIE0_IO_TARGET,
-					  KIRKWOOD_MBUS_PCIE0_IO_ATTR,
-					  KIRKWOOD_PCIE_IO_PHYS_BASE,
-					  KIRKWOOD_PCIE_IO_SIZE,
-					  KIRKWOOD_PCIE_IO_BUS_BASE);
-	mvebu_mbus_add_window_by_id(KIRKWOOD_MBUS_PCIE0_MEM_TARGET,
-				    KIRKWOOD_MBUS_PCIE0_MEM_ATTR,
-				    KIRKWOOD_PCIE_MEM_PHYS_BASE,
-				    KIRKWOOD_PCIE_MEM_SIZE);
-	mvebu_mbus_add_window_remap_by_id(KIRKWOOD_MBUS_PCIE1_IO_TARGET,
-					  KIRKWOOD_MBUS_PCIE1_IO_ATTR,
-					  KIRKWOOD_PCIE1_IO_PHYS_BASE,
-					  KIRKWOOD_PCIE1_IO_SIZE,
-					  KIRKWOOD_PCIE1_IO_BUS_BASE);
-	mvebu_mbus_add_window_by_id(KIRKWOOD_MBUS_PCIE1_MEM_TARGET,
-				    KIRKWOOD_MBUS_PCIE1_MEM_ATTR,
-				    KIRKWOOD_PCIE1_MEM_PHYS_BASE,
-				    KIRKWOOD_PCIE1_MEM_SIZE);
-
-	vga_base = KIRKWOOD_PCIE_MEM_PHYS_BASE;
-
-	if (portmask & KW_PCIE0)
-		add_pcie_port(0, PCIE_VIRT_BASE);
-
-	if (portmask & KW_PCIE1)
-		add_pcie_port(1, PCIE1_VIRT_BASE);
-
-	kirkwood_pci.nr_controllers = num_pcie_ports;
-	pci_common_init(&kirkwood_pci);
-}
-- 
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