vdev/vdev_timer.c File Reference

#include "vdev_timer.h"
#include <context.h>
#include <log/print.h>

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Data Structures
struct	vdev_timer_regs
Functions
void	vtimer_set_callback_chagned_status (vtimer_changed_status_callback_t callback)
static void	vtimer_changed_status (vmid_t vmid, uint32_t status)
static hvmm_status_t	access_handler (uint32_t write, uint32_t offset, uint32_t *pvalue, vdev_access_size_t access_size)
hvmm_status_t	vdev_timer_init (uint32_t base_addr)
Variables
static vdev_info_t	_vdev_info
static struct vdev_timer_regs	regs [NUM_GUESTS_STATIC]
static vtimer_changed_status_callback_t	_write_status = 0

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Function Documentation

static hvmm_status_t access_handler	(	uint32_t	write,
		uint32_t	offset,
		uint32_t *	pvalue,
		vdev_access_size_t	access_size
	)		[static]

Definition at line 27 of file vdev_timer.c.

{
    printh( "%s: %s offset:%d value:%x\n", __FUNCTION__, write ? "write" : "read", offset, write ? *pvalue : (uint32_t) pvalue );
    hvmm_status_t result = HVMM_STATUS_BAD_ACCESS;
    unsigned int vmid = context_current_vmid();
    if (!write) {
        // READ
        switch (offset){
        case 0x0:
            *pvalue = regs[vmid].timer_mask;
            result = HVMM_STATUS_SUCCESS;
            break;
        }
    } else { 
        //WRITE
        switch (offset){
        case 0x0:
            regs[vmid].timer_mask = *pvalue;
            vtimer_changed_status(vmid, *pvalue);
            result = HVMM_STATUS_SUCCESS;
            break;
        }
    }
    return result;
}

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hvmm_status_t vdev_timer_init

(

uint32_t

base_addr

)

Definition at line 53 of file vdev_timer.c.

{
    hvmm_status_t result = HVMM_STATUS_BUSY;

    _vdev_info.name     = "vtimer";
    _vdev_info.base     = base_addr; 
    _vdev_info.size     = sizeof(struct vdev_timer_regs);
    _vdev_info.handler  = access_handler;

    result = vdev_reg_device(&_vdev_info);
    if ( result == HVMM_STATUS_SUCCESS ) {
        printh("%s: vdev registered:'%s'\n", __FUNCTION__, _vdev_info.name);
    } else {
        printh("%s: Unable to register vdev:'%s' code=%x\n", __FUNCTION__, _vdev_info.name, result);
    }
    return result;
}

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static void vtimer_changed_status	(	vmid_t	vmid,
		uint32_t	status
	)		[static]

Definition at line 20 of file vdev_timer.c.

{
    if( _write_status != 0 ) {
        _write_status( vmid, status );
    }
}

void vtimer_set_callback_chagned_status

(

vtimer_changed_status_callback_t

callback

)

Definition at line 15 of file vdev_timer.c.

{
    _write_status = callback;
}

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Variable Documentation

vdev_info_t _vdev_info [static]

Definition at line 10 of file vdev_timer.c.

vtimer_changed_status_callback_t _write_status = 0 [static]

Definition at line 13 of file vdev_timer.c.

struct vdev_timer_regs regs[NUM_GUESTS_STATIC] [static]

Definition at line 11 of file vdev_timer.c.