[SPARC64]: Wire up cookie based sun4v interrupt registry. (4a907dec) · Commits · e / devices / android_kernel_fairphone_FP5

arch/sparc64/kernel/irq.c

+122 −9

Original line number	Diff line number	Diff line
		/* $Id: irq.c,v 1.114 2002/01/11 08:45:38 davem Exp $
		* irq.c: UltraSparc IRQ handling/init/registry.
		/* irq.c: UltraSparc IRQ handling/init/registry.
		*
		* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
		* Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net)
		* Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
		* Copyright (C) 1998 Jakub Jelinek (jj@ultra.linux.cz)
		*/
		@@ -43,6 +42,7 @@
		#include <asm/cpudata.h>
		#include <asm/auxio.h>
		#include <asm/head.h>
		#include <asm/hypervisor.h>

		/* UPA nodes send interrupt packet to UltraSparc with first data reg
		* value low 5 (7 on Starfire) bits holding the IRQ identifier being
		@@ -380,6 +380,76 @@ static void sun4v_irq_end(unsigned int virt_irq)
		}
		}

		static void sun4v_virq_enable(unsigned int virt_irq)
		{
		struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
		unsigned int ino = bucket - &ivector_table[0];

		if (likely(bucket)) {
		unsigned long cpuid, dev_handle, dev_ino;
		int err;

		cpuid = irq_choose_cpu(virt_irq);

		dev_handle = ino & IMAP_IGN;
		dev_ino = ino & IMAP_INO;

		err = sun4v_vintr_set_target(dev_handle, dev_ino, cpuid);
		if (err != HV_EOK)
		printk("sun4v_vintr_set_target(%lx,%lx,%lu): "
		"err(%d)\n",
		dev_handle, dev_ino, cpuid, err);
		err = sun4v_vintr_set_state(dev_handle, dev_ino,
		HV_INTR_ENABLED);
		if (err != HV_EOK)
		printk("sun4v_vintr_set_state(%lx,%lx,"
		"HV_INTR_ENABLED): err(%d)\n",
		dev_handle, dev_ino, err);
		}
		}

		static void sun4v_virq_disable(unsigned int virt_irq)
		{
		struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
		unsigned int ino = bucket - &ivector_table[0];

		if (likely(bucket)) {
		unsigned long dev_handle, dev_ino;
		int err;

		dev_handle = ino & IMAP_IGN;
		dev_ino = ino & IMAP_INO;

		err = sun4v_vintr_set_state(dev_handle, dev_ino,
		HV_INTR_DISABLED);
		if (err != HV_EOK)
		printk("sun4v_vintr_set_state(%lx,%lx,"
		"HV_INTR_DISABLED): err(%d)\n",
		dev_handle, dev_ino, err);
		}
		}

		static void sun4v_virq_end(unsigned int virt_irq)
		{
		struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
		unsigned int ino = bucket - &ivector_table[0];

		if (likely(bucket)) {
		unsigned long dev_handle, dev_ino;
		int err;

		dev_handle = ino & IMAP_IGN;
		dev_ino = ino & IMAP_INO;

		err = sun4v_vintr_set_state(dev_handle, dev_ino,
		HV_INTR_STATE_IDLE);
		if (err != HV_EOK)
		printk("sun4v_vintr_set_state(%lx,%lx,"
		"HV_INTR_STATE_IDLE): err(%d)\n",
		dev_handle, dev_ino, err);
		}
		}

		static void run_pre_handler(unsigned int virt_irq)
		{
		struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
		@@ -434,6 +504,21 @@ static struct irq_chip sun4v_msi = {
		};
		#endif

		static struct irq_chip sun4v_virq = {
		.typename = "vsun4v",
		.enable = sun4v_virq_enable,
		.disable = sun4v_virq_disable,
		.end = sun4v_virq_end,
		};

		static struct irq_chip sun4v_virq_ack = {
		.typename = "vsun4v+ack",
		.enable = sun4v_virq_enable,
		.disable = sun4v_virq_disable,
		.ack = run_pre_handler,
		.end = sun4v_virq_end,
		};

		void irq_install_pre_handler(int virt_irq,
		void (func)(unsigned int, void , void *),
		void arg1, void arg2)
		@@ -447,7 +532,8 @@ void irq_install_pre_handler(int virt_irq,

		chip = get_irq_chip(virt_irq);
		if (chip == &sun4u_irq_ack \|\|
		chip == &sun4v_irq_ack
		chip == &sun4v_irq_ack \|\|
		chip == &sun4v_virq_ack
		#ifdef CONFIG_PCI_MSI
		\|\| chip == &sun4v_msi
		#endif
		@@ -455,7 +541,9 @@ void irq_install_pre_handler(int virt_irq,
		return;

		chip = (chip == &sun4u_irq ?
		&sun4u_irq_ack : &sun4v_irq_ack);
		&sun4u_irq_ack :
		(chip == &sun4v_irq ?
		&sun4v_irq_ack : &sun4v_virq_ack));
		set_irq_chip(virt_irq, chip);
		}

		@@ -492,19 +580,18 @@ unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap)
		return bucket->virt_irq;
		}

		unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino)
		static unsigned int sun4v_build_common(unsigned long sysino,
		struct irq_chip *chip)
		{
		struct ino_bucket *bucket;
		struct irq_handler_data *data;
		unsigned long sysino;

		BUG_ON(tlb_type != hypervisor);

		sysino = sun4v_devino_to_sysino(devhandle, devino);
		bucket = &ivector_table[sysino];
		if (!bucket->virt_irq) {
		bucket->virt_irq = virt_irq_alloc(__irq(bucket));
		set_irq_chip(bucket->virt_irq, &sun4v_irq);
		set_irq_chip(bucket->virt_irq, chip);
		}

		data = get_irq_chip_data(bucket->virt_irq);
		@@ -529,6 +616,32 @@ unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino)
		return bucket->virt_irq;
		}

		unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino)
		{
		unsigned long sysino = sun4v_devino_to_sysino(devhandle, devino);

		return sun4v_build_common(sysino, &sun4v_irq);
		}

		unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino)
		{
		unsigned long sysino, hv_err;

		BUG_ON(devhandle & ~IMAP_IGN);
		BUG_ON(devino & ~IMAP_INO);

		sysino = devhandle \| devino;

		hv_err = sun4v_vintr_set_cookie(devhandle, devino, sysino);
		if (hv_err) {
		prom_printf("IRQ: Fatal, cannot set cookie for [%x:%x] "
		"err=%lu\n", devhandle, devino, hv_err);
		prom_halt();
		}

		return sun4v_build_common(sysino, &sun4v_virq);
		}

		#ifdef CONFIG_PCI_MSI
		unsigned int sun4v_build_msi(u32 devhandle, unsigned int *virt_irq_p,
		unsigned int msi_start, unsigned int msi_end)

include/asm-sparc64/irq.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -46,6 +46,7 @@ extern void irq_install_pre_handler(int virt_irq,
		#define irq_canonicalize(irq) (irq)
		extern unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap);
		extern unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino);
		extern unsigned int sun4v_build_virq(u32 devhandle, unsigned int devino);
		extern unsigned int sun4v_build_msi(u32 devhandle, unsigned int *virt_irq_p,
		unsigned int msi_devino_start,
		unsigned int msi_devino_end);