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uio_hv_generic: use standard mmap for resources

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The generic UIO mmap should work for us.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Stephen Hemminger 2018-01-04 14:13:28 -08:00 committed by Greg Kroah-Hartman
parent 4289696863
commit 9c40546c01
1 changed files with 7 additions and 26 deletions
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33
drivers/uio/uio_hv_generic.c
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@ -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;