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Commit 9c40546c authored by Stephen Hemminger's avatar Stephen Hemminger Committed by Greg Kroah-Hartman
Browse files

uio_hv_generic: use standard mmap for resources 



The generic UIO mmap should work for us.

Signed-off-by: default avatarStephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 42896968

drivers/uio/uio_hv_generic.c

+7 −26
Original line number Diff line number Diff line
@@ -56,24 +56,6 @@ struct hv_uio_private_data { 
	struct hv_device *device;

};



static int

hv_uio_mmap(struct uio_info *info, struct vm_area_struct *vma)

{

	int mi;



	if (vma->vm_pgoff >= MAX_UIO_MAPS)

		return -EINVAL;



	if (info->mem[vma->vm_pgoff].size == 0)

		return -EINVAL;



	mi = (int)vma->vm_pgoff;



	return remap_pfn_range(vma, vma->vm_start,

			info->mem[mi].addr >> PAGE_SHIFT,

			vma->vm_end - vma->vm_start, vma->vm_page_prot);

}



/*

 * This is the irqcontrol callback to be registered to uio_info.

 * It can be used to disable/enable interrupt from user space processes.
@@ -133,26 +115,25 @@ hv_uio_probe(struct hv_device *dev, 
	pdata->info.name = "uio_hv_generic";

	pdata->info.version = DRIVER_VERSION;

	pdata->info.irqcontrol = hv_uio_irqcontrol;

	pdata->info.mmap = hv_uio_mmap;

	pdata->info.irq = UIO_IRQ_CUSTOM;



	/* mem resources */

	pdata->info.mem[TXRX_RING_MAP].name = "txrx_rings";

	pdata->info.mem[TXRX_RING_MAP].addr

		= virt_to_phys(dev->channel->ringbuffer_pages);

		= (phys_addr_t)dev->channel->ringbuffer_pages;

	pdata->info.mem[TXRX_RING_MAP].size

		= dev->channel->ringbuffer_pagecount * PAGE_SIZE;

		= dev->channel->ringbuffer_pagecount << PAGE_SHIFT;

	pdata->info.mem[TXRX_RING_MAP].memtype = UIO_MEM_LOGICAL;



	pdata->info.mem[INT_PAGE_MAP].name = "int_page";

	pdata->info.mem[INT_PAGE_MAP].addr =

		virt_to_phys(vmbus_connection.int_page);

	pdata->info.mem[INT_PAGE_MAP].addr

		= (phys_addr_t)vmbus_connection.int_page;

	pdata->info.mem[INT_PAGE_MAP].size = PAGE_SIZE;

	pdata->info.mem[INT_PAGE_MAP].memtype = UIO_MEM_LOGICAL;



	pdata->info.mem[MON_PAGE_MAP].name = "monitor_pages";

	pdata->info.mem[MON_PAGE_MAP].addr =

		virt_to_phys(vmbus_connection.monitor_pages[1]);

	pdata->info.mem[MON_PAGE_MAP].name = "monitor_page";

	pdata->info.mem[MON_PAGE_MAP].addr

		= (phys_addr_t)vmbus_connection.monitor_pages[1];

	pdata->info.mem[MON_PAGE_MAP].size = PAGE_SIZE;

	pdata->info.mem[MON_PAGE_MAP].memtype = UIO_MEM_LOGICAL;