linux_dsm_epyc7002/arch/arm/mach-ixp23xx/ixdp2351.c

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/*
* arch/arm/mach-ixp23xx/ixdp2351.c
*
* IXDP2351 board-specific routines
*
* Author: Deepak Saxena <dsaxena@plexity.net>
*
* Copyright 2005 (c) MontaVista Software, Inc.
*
* Based on 2.4 code Copyright 2004 (c) Intel Corporation
*
* 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/init.h>
#include <linux/spinlock.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/serial.h>
#include <linux/tty.h>
#include <linux/bitops.h>
#include <linux/ioport.h>
#include <linux/serial_8250.h>
#include <linux/serial_core.h>
#include <linux/device.h>
#include <linux/mm.h>
#include <linux/pci.h>
#include <linux/mtd/physmap.h>
#include <asm/types.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/tlbflush.h>
#include <asm/pgtable.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <asm/mach/arch.h>
#include <asm/mach/pci.h>
/*
* IXDP2351 Interrupt Handling
*/
static void ixdp2351_inta_mask(struct irq_data *d)
{
*IXDP2351_CPLD_INTA_MASK_SET_REG = IXDP2351_INTA_IRQ_MASK(d->irq);
}
static void ixdp2351_inta_unmask(struct irq_data *d)
{
*IXDP2351_CPLD_INTA_MASK_CLR_REG = IXDP2351_INTA_IRQ_MASK(d->irq);
}
static void ixdp2351_inta_handler(unsigned int irq, struct irq_desc *desc)
{
u16 ex_interrupt =
*IXDP2351_CPLD_INTA_STAT_REG & IXDP2351_INTA_IRQ_VALID;
int i;
desc->irq_data.chip->irq_mask(&desc->irq_data);
for (i = 0; i < IXDP2351_INTA_IRQ_NUM; i++) {
if (ex_interrupt & (1 << i)) {
int cpld_irq =
IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE + i);
generic_handle_irq(cpld_irq);
}
}
desc->irq_data.chip->irq_unmask(&desc->irq_data);
}
static struct irq_chip ixdp2351_inta_chip = {
.irq_ack = ixdp2351_inta_mask,
.irq_mask = ixdp2351_inta_mask,
.irq_unmask = ixdp2351_inta_unmask
};
static void ixdp2351_intb_mask(struct irq_data *d)
{
*IXDP2351_CPLD_INTB_MASK_SET_REG = IXDP2351_INTB_IRQ_MASK(d->irq);
}
static void ixdp2351_intb_unmask(struct irq_data *d)
{
*IXDP2351_CPLD_INTB_MASK_CLR_REG = IXDP2351_INTB_IRQ_MASK(d->irq);
}
static void ixdp2351_intb_handler(unsigned int irq, struct irq_desc *desc)
{
u16 ex_interrupt =
*IXDP2351_CPLD_INTB_STAT_REG & IXDP2351_INTB_IRQ_VALID;
int i;
desc->irq_data.chip->irq_ack(&desc->irq_data);
for (i = 0; i < IXDP2351_INTB_IRQ_NUM; i++) {
if (ex_interrupt & (1 << i)) {
int cpld_irq =
IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE + i);
generic_handle_irq(cpld_irq);
}
}
desc->irq_data.chip->irq_unmask(&desc->irq_data);
}
static struct irq_chip ixdp2351_intb_chip = {
.irq_ack = ixdp2351_intb_mask,
.irq_mask = ixdp2351_intb_mask,
.irq_unmask = ixdp2351_intb_unmask
};
[ARM] Fix some section mismatch warnings The following patch fixes these section mismatch warnings: WARNING: arch/arm/mach-at91/built-in.o(.text+0xdf4): Section mismatch: reference to .init.data:dk_nand_partition (between 'nand_partitions' and 'at91_leds_event') WARNING: arch/arm/mach-at91/built-in.o(.text+0xbdc): Section mismatch: reference to .init.data:ek_nand_partition (after 'nand_partitions') WARNING: arch/arm/mach-at91/built-in.o(.text+0xbdc): Section mismatch: reference to .init.data:ek_nand_partition (between 'nand_partitions' and 'ads7843_pendown_state') WARNING: arch/arm/mach-at91/built-in.o(.text+0xbdc): Section mismatch: reference to .init.data:ek_nand_partition (after 'nand_partitions') WARNING: arch/arm/mach-at91/built-in.o(.text+0xc28): Section mismatch: reference to .init.data:kb9202_nand_partition (after 'nand_partitions') WARNING: arch/arm/mach-footbridge/built-in.o(.text+0xaa4): Section mismatch: reference to .init.data:cats_pci (between 'cats_pci_init' and 'ebsa285_leds_event')WARNING: arch/arm/mach-ixp2000/built-in.o(.text+0xb54): Section mismatch: reference to .init.text:ixp2000_init_irq (between 'ixdp2x00_init_irq' and 'ixdp2x00_irq_handler') WARNING: arch/arm/mach-ixp23xx/built-in.o(.text+0x670): Section mismatch: reference to .init.text:ixp23xx_pci_common_init (between 'ixp23xx_pci_slave_init' and 'ixp23xx_pci_scan_bus') WARNING: arch/arm/mach-ixp23xx/built-in.o(.text+0x890): Section mismatch: reference to .init.text:ixp23xx_init_irq (between 'ixdp2351_init_irq' and 'roadrunner_pci_preinit') WARNING: arch/arm/mach-ixp23xx/built-in.o(.text+0x9a8): Section mismatch: reference to .init.text:ixp23xx_pci_preinit (after 'roadrunner_pci_preinit') WARNING: arch/arm/mach-imx/built-in.o(__ksymtab+0x80): Section mismatch: reference to .init.text:imx_set_mmc_info (between '__ksymtab_imx_set_mmc_info' and '__ksymtab_set_imx_fb_info') WARNING: arch/arm/mach-imx/built-in.o(__ksymtab+0x88): Section mismatch: reference to .init.text:set_imx_fb_info (after '__ksymtab_set_imx_fb_info') WARNING: arch/arm/mach-sa1100/built-in.o(.text+0x1930): Section mismatch: reference to .init.data:neponset_port_fns (between 'neponset_probe' and 'assabet_leds_event') WARNING: drivers/built-in.o(.text+0x3f100): Section mismatch: reference to .init.text:ps2_clear_input (between 'ps2_probe' and 'ps2_cmd_aborted') WARNING: drivers/built-in.o(.text+0x3f1c8): Section mismatch: reference to .init.text:ps2_clear_input (between 'ps2_probe' and 'ps2_cmd_aborted') WARNING: drivers/built-in.o(.text+0x4f988): Section mismatch: reference to .init.text:ps2_clear_input (between 'ps2_probe' and 'ps2_cmd_aborted') WARNING: drivers/built-in.o(.text+0x4fa50): Section mismatch: reference to .init.text:ps2_clear_input (between 'ps2_probe' and 'ps2_cmd_aborted') Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-30 23:48:45 +07:00
void __init ixdp2351_init_irq(void)
{
int irq;
/* Mask all interrupts from CPLD, disable simulation */
*IXDP2351_CPLD_INTA_MASK_SET_REG = (u16) -1;
*IXDP2351_CPLD_INTB_MASK_SET_REG = (u16) -1;
*IXDP2351_CPLD_INTA_SIM_REG = 0;
*IXDP2351_CPLD_INTB_SIM_REG = 0;
ixp23xx_init_irq();
for (irq = IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE);
irq <
IXP23XX_MACH_IRQ(IXDP2351_INTA_IRQ_BASE + IXDP2351_INTA_IRQ_NUM);
irq++) {
if (IXDP2351_INTA_IRQ_MASK(irq) & IXDP2351_INTA_IRQ_VALID) {
set_irq_flags(irq, IRQF_VALID);
irq_set_chip_and_handler(irq, &ixdp2351_inta_chip,
handle_level_irq);
}
}
for (irq = IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE);
irq <
IXP23XX_MACH_IRQ(IXDP2351_INTB_IRQ_BASE + IXDP2351_INTB_IRQ_NUM);
irq++) {
if (IXDP2351_INTB_IRQ_MASK(irq) & IXDP2351_INTB_IRQ_VALID) {
set_irq_flags(irq, IRQF_VALID);
irq_set_chip_and_handler(irq, &ixdp2351_intb_chip,
handle_level_irq);
}
}
irq_set_chained_handler(IRQ_IXP23XX_INTA, ixdp2351_inta_handler);
irq_set_chained_handler(IRQ_IXP23XX_INTB, ixdp2351_intb_handler);
}
/*
* IXDP2351 PCI
*/
/*
* This board does not do normal PCI IRQ routing, or any
* sort of swizzling, so we just need to check where on the
* bus the device is and figure out what CPLD pin it is
* being routed to.
*/
#define DEVPIN(dev, pin) ((pin) | ((dev) << 3))
PCI: Make the struct pci_dev * argument of pci_fixup_irqs const. Aside of the usual motivation for constification, this function has a history of being abused a hook for interrupt and other fixups so I turned this function const ages ago in the MIPS code but it should be done treewide. Due to function pointer passing in varous places a few other functions had to be constified as well. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> To: Anton Vorontsov <avorontsov@mvista.com> To: Chris Metcalf <cmetcalf@tilera.com> To: Colin Cross <ccross@android.com> Acked-by: "David S. Miller" <davem@davemloft.net> To: Eric Miao <eric.y.miao@gmail.com> To: Erik Gilling <konkers@android.com> Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> To: "H. Peter Anvin" <hpa@zytor.com> To: Imre Kaloz <kaloz@openwrt.org> To: Ingo Molnar <mingo@redhat.com> To: Ivan Kokshaysky <ink@jurassic.park.msu.ru> To: Jesse Barnes <jbarnes@virtuousgeek.org> To: Krzysztof Halasa <khc@pm.waw.pl> To: Lennert Buytenhek <kernel@wantstofly.org> To: Matt Turner <mattst88@gmail.com> To: Nicolas Pitre <nico@fluxnic.net> To: Olof Johansson <olof@lixom.net> Acked-by: Paul Mundt <lethal@linux-sh.org> To: Richard Henderson <rth@twiddle.net> To: Russell King <linux@arm.linux.org.uk> To: Thomas Gleixner <tglx@linutronix.de> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: linux-alpha@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: linux-pci@vger.kernel.org Cc: linux-sh@vger.kernel.org Cc: linux-tegra@vger.kernel.org Cc: sparclinux@vger.kernel.org Cc: x86@kernel.org Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2011-06-10 21:30:21 +07:00
static int __init ixdp2351_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
u8 bus = dev->bus->number;
u32 devpin = DEVPIN(PCI_SLOT(dev->devfn), pin);
struct pci_bus *tmp_bus = dev->bus;
/* Primary bus, no interrupts here */
if (!bus)
return -1;
/* Lookup first leaf in bus tree */
while ((tmp_bus->parent != NULL) && (tmp_bus->parent->parent != NULL))
tmp_bus = tmp_bus->parent;
/* Select between known bridges */
switch (tmp_bus->self->devfn | (tmp_bus->self->bus->number << 8)) {
/* Device is located after first bridge */
case 0x0008:
if (tmp_bus == dev->bus) {
/* Device is located directy after first bridge */
switch (devpin) {
/* Onboard 82546 */
case DEVPIN(1, 1): /* Onboard 82546 ch 0 */
return IRQ_IXDP2351_INTA_82546;
case DEVPIN(1, 2): /* Onboard 82546 ch 1 */
return IRQ_IXDP2351_INTB_82546;
/* PMC SLOT */
case DEVPIN(0, 1): /* PMCP INTA# */
case DEVPIN(2, 4): /* PMCS INTD# */
return IRQ_IXDP2351_SPCI_PMC_INTA;
case DEVPIN(0, 2): /* PMCP INTB# */
case DEVPIN(2, 1): /* PMCS INTA# */
return IRQ_IXDP2351_SPCI_PMC_INTB;
case DEVPIN(0, 3): /* PMCP INTC# */
case DEVPIN(2, 2): /* PMCS INTB# */
return IRQ_IXDP2351_SPCI_PMC_INTC;
case DEVPIN(0, 4): /* PMCP INTD# */
case DEVPIN(2, 3): /* PMCS INTC# */
return IRQ_IXDP2351_SPCI_PMC_INTD;
}
} else {
/* Device is located indirectly after first bridge */
/* Not supported now */
return -1;
}
break;
case 0x0010:
if (tmp_bus == dev->bus) {
/* Device is located directy after second bridge */
/* Secondary bus of second bridge */
switch (devpin) {
case DEVPIN(0, 1): /* DB#0 */
case DEVPIN(0, 2):
case DEVPIN(0, 3):
case DEVPIN(0, 4):
return IRQ_IXDP2351_SPCI_DB_0;
case DEVPIN(1, 1): /* DB#1 */
case DEVPIN(1, 2):
case DEVPIN(1, 3):
case DEVPIN(1, 4):
return IRQ_IXDP2351_SPCI_DB_1;
case DEVPIN(2, 1): /* FIC1 */
case DEVPIN(2, 2):
case DEVPIN(2, 3):
case DEVPIN(2, 4):
case DEVPIN(3, 1): /* FIC2 */
case DEVPIN(3, 2):
case DEVPIN(3, 3):
case DEVPIN(3, 4):
return IRQ_IXDP2351_SPCI_FIC;
}
} else {
/* Device is located indirectly after second bridge */
/* Not supported now */
return -1;
}
break;
}
return -1;
}
struct hw_pci ixdp2351_pci __initdata = {
.nr_controllers = 1,
.preinit = ixp23xx_pci_preinit,
.setup = ixp23xx_pci_setup,
.scan = ixp23xx_pci_scan_bus,
.map_irq = ixdp2351_map_irq,
};
int __init ixdp2351_pci_init(void)
{
if (machine_is_ixdp2351())
pci_common_init(&ixdp2351_pci);
return 0;
}
subsys_initcall(ixdp2351_pci_init);
/*
* IXDP2351 Static Mapped I/O
*/
static struct map_desc ixdp2351_io_desc[] __initdata = {
{
.virtual = IXDP2351_NP_VIRT_BASE,
.pfn = __phys_to_pfn((u64)IXDP2351_NP_PHYS_BASE),
.length = IXDP2351_NP_PHYS_SIZE,
.type = MT_DEVICE
}, {
.virtual = IXDP2351_BB_BASE_VIRT,
.pfn = __phys_to_pfn((u64)IXDP2351_BB_BASE_PHYS),
.length = IXDP2351_BB_SIZE,
.type = MT_DEVICE
}
};
static void __init ixdp2351_map_io(void)
{
ixp23xx_map_io();
iotable_init(ixdp2351_io_desc, ARRAY_SIZE(ixdp2351_io_desc));
}
static struct physmap_flash_data ixdp2351_flash_data = {
.width = 1,
};
static struct resource ixdp2351_flash_resource = {
.start = 0x90000000,
.end = 0x93ffffff,
.flags = IORESOURCE_MEM,
};
static struct platform_device ixdp2351_flash = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &ixdp2351_flash_data,
},
.num_resources = 1,
.resource = &ixdp2351_flash_resource,
};
static void __init ixdp2351_init(void)
{
platform_device_register(&ixdp2351_flash);
/*
* Mark flash as writeable
*/
IXP23XX_EXP_CS0[0] |= IXP23XX_FLASH_WRITABLE;
IXP23XX_EXP_CS0[1] |= IXP23XX_FLASH_WRITABLE;
IXP23XX_EXP_CS0[2] |= IXP23XX_FLASH_WRITABLE;
IXP23XX_EXP_CS0[3] |= IXP23XX_FLASH_WRITABLE;
ixp23xx_sys_init();
}
static void ixdp2351_restart(char mode, const char *cmd)
{
/* First try machine specific support */
*IXDP2351_CPLD_RESET1_REG = IXDP2351_CPLD_RESET1_MAGIC;
(void) *IXDP2351_CPLD_RESET1_REG;
*IXDP2351_CPLD_RESET1_REG = IXDP2351_CPLD_RESET1_ENABLE;
ixp23xx_restart(mode, cmd);
}
MACHINE_START(IXDP2351, "Intel IXDP2351 Development Platform")
/* Maintainer: MontaVista Software, Inc. */
.map_io = ixdp2351_map_io,
.init_irq = ixdp2351_init_irq,
.timer = &ixp23xx_timer,
.atag_offset = 0x100,
.init_machine = ixdp2351_init,
.restart = ixdp2351_restart,
MACHINE_END