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linux/arch/arm/mach-iop32x/iq31244.c
Mike Rapoport e31cf2f4ca mm: don't include asm/pgtable.h if linux/mm.h is already included 
Patch series "mm: consolidate definitions of page table accessors", v2.

The low level page table accessors (pXY_index(), pXY_offset()) are
duplicated across all architectures and sometimes more than once.  For
instance, we have 31 definition of pgd_offset() for 25 supported
architectures.

Most of these definitions are actually identical and typically it boils
down to, e.g.

static inline unsigned long pmd_index(unsigned long address)
{
        return (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1);
}

static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
{
        return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address);
}

These definitions can be shared among 90% of the arches provided
XYZ_SHIFT, PTRS_PER_XYZ and xyz_page_vaddr() are defined.

For architectures that really need a custom version there is always
possibility to override the generic version with the usual ifdefs magic.

These patches introduce include/linux/pgtable.h that replaces
include/asm-generic/pgtable.h and add the definitions of the page table
accessors to the new header.

This patch (of 12):

The linux/mm.h header includes <asm/pgtable.h> to allow inlining of the
functions involving page table manipulations, e.g.  pte_alloc() and
pmd_alloc().  So, there is no point to explicitly include <asm/pgtable.h>
in the files that include <linux/mm.h>.

The include statements in such cases are remove with a simple loop:

	for f in $(git grep -l "include <linux/mm.h>") ; do
		sed -i -e '/include <asm\/pgtable.h>/ d' $f
	done

Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Cain <bcain@codeaurora.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chris Zankel <chris@zankel.net>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greentime Hu <green.hu@gmail.com>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Guo Ren <guoren@kernel.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ley Foon Tan <ley.foon.tan@intel.com>
Cc: Mark Salter <msalter@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Nick Hu <nickhu@andestech.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vincent Chen <deanbo422@gmail.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20200514170327.31389-1-rppt@kernel.org
Link: http://lkml.kernel.org/r/20200514170327.31389-2-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-06-09 09:39:13 -07:00

333 lines
7.3 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* arch/arm/mach-iop32x/iq31244.c
*
* Board support code for the Intel EP80219 and IQ31244 platforms.
*
* Author: Rory Bolt <rorybolt@pacbell.net>
* Copyright (C) 2002 Rory Bolt
* Copyright 2003 (c) MontaVista, Software, Inc.
* Copyright (C) 2004 Intel Corp.
*/
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/pm.h>
#include <linux/string.h>
#include <linux/serial_core.h>
#include <linux/serial_8250.h>
#include <linux/mtd/physmap.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/gpio/machine.h>
#include <asm/cputype.h>
#include <asm/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/pci.h>
#include <asm/mach/time.h>
#include <asm/mach-types.h>
#include <asm/page.h>
#include "hardware.h"
#include "irqs.h"
#include "gpio-iop32x.h"
/*
* Until March of 2007 iq31244 platforms and ep80219 platforms shared the
* same machine id, and the processor type was used to select board type.
* However this assumption breaks for an iq80219 board which is an iop219
* processor on an iq31244 board. The force_ep80219 flag has been added
* for old boot loaders using the iq31244 machine id for an ep80219 platform.
*/
static int force_ep80219;
static int is_80219(void)
{
return !!((read_cpuid_id() & 0xffffffe0) == 0x69052e20);
}
static int is_ep80219(void)
{
if (machine_is_ep80219() || force_ep80219)
return 1;
else
return 0;
}
/*
* EP80219/IQ31244 timer tick configuration.
*/
static void __init iq31244_timer_init(void)
{
if (is_ep80219()) {
/* 33.333 MHz crystal. */
iop_init_time(200000000);
} else {
/* 33.000 MHz crystal. */
iop_init_time(198000000);
}
}
/*
* IQ31244 I/O.
*/
static struct map_desc iq31244_io_desc[] __initdata = {
{ /* on-board devices */
.virtual = IQ31244_UART,
.pfn = __phys_to_pfn(IQ31244_UART),
.length = 0x00100000,
.type = MT_DEVICE,
},
};
void __init iq31244_map_io(void)
{
iop3xx_map_io();
iotable_init(iq31244_io_desc, ARRAY_SIZE(iq31244_io_desc));
}
/*
* EP80219/IQ31244 PCI.
*/
static int __init
ep80219_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
int irq;
if (slot == 0) {
/* CFlash */
irq = IRQ_IOP32X_XINT1;
} else if (slot == 1) {
/* 82551 Pro 100 */
irq = IRQ_IOP32X_XINT0;
} else if (slot == 2) {
/* PCI-X Slot */
irq = IRQ_IOP32X_XINT3;
} else if (slot == 3) {
/* SATA */
irq = IRQ_IOP32X_XINT2;
} else {
printk(KERN_ERR "ep80219_pci_map_irq() called for unknown "
"device PCI:%d:%d:%d\n", dev->bus->number,
PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
irq = -1;
}
return irq;
}
static struct hw_pci ep80219_pci __initdata = {
.nr_controllers = 1,
.ops = &iop3xx_ops,
.setup = iop3xx_pci_setup,
.preinit = iop3xx_pci_preinit,
.map_irq = ep80219_pci_map_irq,
};
static int __init
iq31244_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
int irq;
if (slot == 0) {
/* CFlash */
irq = IRQ_IOP32X_XINT1;
} else if (slot == 1) {
/* SATA */
irq = IRQ_IOP32X_XINT2;
} else if (slot == 2) {
/* PCI-X Slot */
irq = IRQ_IOP32X_XINT3;
} else if (slot == 3) {
/* 82546 GigE */
irq = IRQ_IOP32X_XINT0;
} else {
printk(KERN_ERR "iq31244_pci_map_irq called for unknown "
"device PCI:%d:%d:%d\n", dev->bus->number,
PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
irq = -1;
}
return irq;
}
static struct hw_pci iq31244_pci __initdata = {
.nr_controllers = 1,
.ops = &iop3xx_ops,
.setup = iop3xx_pci_setup,
.preinit = iop3xx_pci_preinit,
.map_irq = iq31244_pci_map_irq,
};
static int __init iq31244_pci_init(void)
{
if (is_ep80219())
pci_common_init(&ep80219_pci);
else if (machine_is_iq31244()) {
if (is_80219()) {
printk("note: iq31244 board type has been selected\n");
printk("note: to select ep80219 operation:\n");
printk("\t1/ specify \"force_ep80219\" on the kernel"
" command line\n");
printk("\t2/ update boot loader to pass"
" the ep80219 id: %d\n", MACH_TYPE_EP80219);
}
pci_common_init(&iq31244_pci);
}
return 0;
}
subsys_initcall(iq31244_pci_init);
/*
* IQ31244 machine initialisation.
*/
static struct physmap_flash_data iq31244_flash_data = {
.width = 2,
};
static struct resource iq31244_flash_resource = {
.start = 0xf0000000,
.end = 0xf07fffff,
.flags = IORESOURCE_MEM,
};
static struct platform_device iq31244_flash_device = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &iq31244_flash_data,
},
.num_resources = 1,
.resource = &iq31244_flash_resource,
};
static struct plat_serial8250_port iq31244_serial_port[] = {
{
.mapbase = IQ31244_UART,
.membase = (char *)IQ31244_UART,
.irq = IRQ_IOP32X_XINT1,
.flags = UPF_SKIP_TEST,
.iotype = UPIO_MEM,
.regshift = 0,
.uartclk = 1843200,
},
{ },
};
static struct resource iq31244_uart_resource = {
.start = IQ31244_UART,
.end = IQ31244_UART + 7,
.flags = IORESOURCE_MEM,
};
static struct platform_device iq31244_serial_device = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.dev = {
.platform_data = iq31244_serial_port,
},
.num_resources = 1,
.resource = &iq31244_uart_resource,
};
/*
* This function will send a SHUTDOWN_COMPLETE message to the PIC
* controller over I2C. We are not using the i2c subsystem since
* we are going to power off and it may be removed
*/
void ep80219_power_off(void)
{
/*
* Send the Address byte w/ the start condition
*/
*IOP3XX_IDBR1 = 0x60;
*IOP3XX_ICR1 = 0xE9;
mdelay(1);
/*
* Send the START_MSG byte w/ no start or stop condition
*/
*IOP3XX_IDBR1 = 0x0F;
*IOP3XX_ICR1 = 0xE8;
mdelay(1);
/*
* Send the SHUTDOWN_COMPLETE Message ID byte w/ no start or
* stop condition
*/
*IOP3XX_IDBR1 = 0x03;
*IOP3XX_ICR1 = 0xE8;
mdelay(1);
/*
* Send an ignored byte w/ stop condition
*/
*IOP3XX_IDBR1 = 0x00;
*IOP3XX_ICR1 = 0xEA;
while (1)
;
}
static void __init iq31244_init_machine(void)
{
register_iop32x_gpio();
gpiod_add_lookup_table(&iop3xx_i2c0_gpio_lookup);
gpiod_add_lookup_table(&iop3xx_i2c1_gpio_lookup);
platform_device_register(&iop3xx_i2c0_device);
platform_device_register(&iop3xx_i2c1_device);
platform_device_register(&iq31244_flash_device);
platform_device_register(&iq31244_serial_device);
platform_device_register(&iop3xx_dma_0_channel);
platform_device_register(&iop3xx_dma_1_channel);
if (is_ep80219())
pm_power_off = ep80219_power_off;
if (!is_80219())
platform_device_register(&iop3xx_aau_channel);
}
static int __init force_ep80219_setup(char *str)
{
force_ep80219 = 1;
return 1;
}
__setup("force_ep80219", force_ep80219_setup);
MACHINE_START(IQ31244, "Intel IQ31244")
/* Maintainer: Intel Corp. */
.atag_offset = 0x100,
.map_io = iq31244_map_io,
.init_irq = iop32x_init_irq,
.init_time = iq31244_timer_init,
.init_machine = iq31244_init_machine,
.restart = iop3xx_restart,
MACHINE_END
/* There should have been an ep80219 machine identifier from the beginning.
* Boot roms older than March 2007 do not know the ep80219 machine id. Pass
* "force_ep80219" on the kernel command line, otherwise iq31244 operation
* will be selected.
*/
MACHINE_START(EP80219, "Intel EP80219")
/* Maintainer: Intel Corp. */
.atag_offset = 0x100,
.map_io = iq31244_map_io,
.init_irq = iop32x_init_irq,
.init_time = iq31244_timer_init,
.init_machine = iq31244_init_machine,
.restart = iop3xx_restart,
MACHINE_END
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