![Ralf Baechle](/assets/img/avatar_default.png)
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>
58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
/*
|
|
* linux/arch/arm/mach-footbridge/personal-pci.c
|
|
*
|
|
* PCI bios-type initialisation for PCI machines
|
|
*
|
|
* Bits taken from various places.
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <asm/irq.h>
|
|
#include <asm/mach/pci.h>
|
|
#include <asm/mach-types.h>
|
|
|
|
static int irqmap_personal_server[] __initdata = {
|
|
IRQ_IN0, IRQ_IN1, IRQ_IN2, IRQ_IN3, 0, 0, 0,
|
|
IRQ_DOORBELLHOST, IRQ_DMA1, IRQ_DMA2, IRQ_PCI
|
|
};
|
|
|
|
static int __init personal_server_map_irq(const struct pci_dev *dev, u8 slot,
|
|
u8 pin)
|
|
{
|
|
unsigned char line;
|
|
|
|
pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &line);
|
|
|
|
if (line > 0x40 && line <= 0x5f) {
|
|
/* line corresponds to the bit controlling this interrupt
|
|
* in the footbridge. Ignore the first 8 interrupt bits,
|
|
* look up the rest in the map. IN0 is bit number 8
|
|
*/
|
|
return irqmap_personal_server[(line & 0x1f) - 8];
|
|
} else if (line == 0) {
|
|
/* no interrupt */
|
|
return 0;
|
|
} else
|
|
return irqmap_personal_server[(line - 1) & 3];
|
|
}
|
|
|
|
static struct hw_pci personal_server_pci __initdata = {
|
|
.map_irq = personal_server_map_irq,
|
|
.nr_controllers = 1,
|
|
.setup = dc21285_setup,
|
|
.scan = dc21285_scan_bus,
|
|
.preinit = dc21285_preinit,
|
|
.postinit = dc21285_postinit,
|
|
};
|
|
|
|
static int __init personal_pci_init(void)
|
|
{
|
|
if (machine_is_personal_server())
|
|
pci_common_init(&personal_server_pci);
|
|
return 0;
|
|
}
|
|
|
|
subsys_initcall(personal_pci_init);
|