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Commit 6e990b50 authored by David S. Miller's avatar David S. Miller
Browse files

[SPARC64]: Kill sun4v virtual device layer. 



Replace with a simple IRQ translater in the PROM
device tree builder.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 93872ba2

arch/sparc64/kernel/devices.c

+0 −97
Original line number Diff line number Diff line
@@ -21,8 +21,6 @@ 
#include <asm/spitfire.h>

#include <asm/timer.h>

#include <asm/cpudata.h>

#include <asm/vdev.h>

#include <asm/irq.h>



/* Used to synchronize acceses to NatSemi SUPER I/O chip configure

 * operations in asm/ns87303.h
@@ -32,100 +30,6 @@ DEFINE_SPINLOCK(ns87303_lock); 
extern void cpu_probe(void);

extern void central_probe(void);



u32 sun4v_vdev_devhandle;

struct device_node *sun4v_vdev_root;



struct vdev_intmap {

	unsigned int phys;

	unsigned int irq;

	unsigned int cnode;

	unsigned int cinterrupt;

};



struct vdev_intmask {

	unsigned int phys;

	unsigned int interrupt;

	unsigned int __unused;

};



static struct vdev_intmap *vdev_intmap;

static int vdev_num_intmap;

static struct vdev_intmask *vdev_intmask;



static void __init sun4v_virtual_device_probe(void)

{

	struct linux_prom64_registers *regs;

	struct property *prop;

	struct device_node *dp;

	int sz;



	if (tlb_type != hypervisor)

		return;



	dp = of_find_node_by_name(NULL, "virtual-devices");

	if (!dp) {

		prom_printf("SUN4V: Fatal error, no virtual-devices node.\n");

		prom_halt();

	}



	sun4v_vdev_root = dp;



	prop = of_find_property(dp, "reg", NULL);

	regs = prop->value;

	sun4v_vdev_devhandle = (regs[0].phys_addr >> 32UL) & 0x0fffffff;



	prop = of_find_property(dp, "interrupt-map", &sz);

	vdev_intmap = prop->value;

	vdev_num_intmap = sz / sizeof(struct vdev_intmap);



	prop = of_find_property(dp, "interrupt-map-mask", NULL);

	vdev_intmask = prop->value;



	printk("%s: Virtual Device Bus devhandle[%x]\n",

	       dp->full_name, sun4v_vdev_devhandle);

}



unsigned int sun4v_vdev_device_interrupt(struct device_node *dev_node)

{

	struct property *prop;

	unsigned int irq, reg;

	int i;



	prop = of_find_property(dev_node, "interrupts", NULL);

	if (!prop) {

		printk("VDEV: Cannot get \"interrupts\" "

		       "property for OBP node %s\n",

		       dev_node->full_name);

		return 0;

	}

	irq = *(unsigned int *) prop->value;



	prop = of_find_property(dev_node, "reg", NULL);

	if (!prop) {

		printk("VDEV: Cannot get \"reg\" "

		       "property for OBP node %s\n",

		       dev_node->full_name);

		return 0;

	}

	reg = *(unsigned int *) prop->value;



	for (i = 0; i < vdev_num_intmap; i++) {

		if (vdev_intmap[i].phys == (reg & vdev_intmask->phys) &&

		    vdev_intmap[i].irq == (irq & vdev_intmask->interrupt)) {

			irq = vdev_intmap[i].cinterrupt;

			break;

		}

	}



	if (i == vdev_num_intmap) {

		printk("VDEV: No matching interrupt map entry "

		       "for OBP node %s\n", dev_node->full_name);

		return 0;

	}



	return sun4v_build_irq(sun4v_vdev_devhandle, irq);

}



static const char *cpu_mid_prop(void)

{

	if (tlb_type == spitfire)
@@ -290,7 +194,6 @@ void __init device_scan(void) 
	}

#endif



	sun4v_virtual_device_probe();

	central_probe();



	cpu_probe();

arch/sparc64/kernel/prom.c

+23 −0
Original line number Diff line number Diff line
@@ -1008,6 +1008,27 @@ static struct irq_trans pci_irq_trans_table[] = { 
};

#endif



static unsigned int sun4v_vdev_irq_build(struct device_node *dp,

					 unsigned int devino,

					 void *_data)

{

	u32 devhandle = (u32) (unsigned long) _data;



	return sun4v_build_irq(devhandle, devino);

}



static void sun4v_vdev_irq_trans_init(struct device_node *dp)

{

	struct linux_prom64_registers *regs;



	dp->irq_trans = prom_early_alloc(sizeof(struct of_irq_controller));

	dp->irq_trans->irq_build = sun4v_vdev_irq_build;



	regs = of_get_property(dp, "reg", NULL);

	dp->irq_trans->data = (void *) (unsigned long)

		((regs->phys_addr >> 32UL) & 0x0fffffff);

}



static void irq_trans_init(struct device_node *dp)

{

	const char *model;
@@ -1034,6 +1055,8 @@ static void irq_trans_init(struct device_node *dp) 
#endif

	if (!strcmp(dp->name, "central"))

		return central_irq_trans_init(dp->child);

	if (!strcmp(dp->name, "virtual-devices"))

		return sun4v_vdev_irq_trans_init(dp);

}



static int is_root_node(const struct device_node *dp)

include/asm-sparc64/vdev.h

deleted100644 → 0
+0 −17
Original line number Diff line number Diff line 
/* vdev.h: SUN4V virtual device interfaces and defines.

 *

 * Copyright (C) 2006 David S. Miller <davem@davemloft.net>

 */



#ifndef _SPARC64_VDEV_H

#define _SPARC64_VDEV_H



#include <linux/types.h>

#include <asm/prom.h>



extern u32 sun4v_vdev_devhandle;

extern struct device_node *sun4v_vdev_root;



extern unsigned int sun4v_vdev_device_interrupt(struct device_node *dev_node);



#endif /* !(_SPARC64_VDEV_H) */