diff options
| author | Stephen Hemminger <stephen@networkplumber.org> | 2018-01-05 01:13:28 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-01-09 21:44:07 +0300 |
| commit | 9c40546c012c8d98e88be38c650e66203cb2f1a8 (patch) | |
| tree | 4c7b41ffff9bd8bdd6c1a9fc81e4e8bc57eb6ffd /drivers/uio | |
| parent | 4289696863cc320e5fe573df5ad7800701751599 (diff) | |
| download | linux-9c40546c012c8d98e88be38c650e66203cb2f1a8.tar.xz | |
uio_hv_generic: use standard mmap for resources
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>
Diffstat (limited to 'drivers/uio')
| -rw-r--r-- | drivers/uio/uio_hv_generic.c | 33 |
1 files changed, 7 insertions, 26 deletions
diff --git a/drivers/uio/uio_hv_generic.c b/drivers/uio/uio_hv_generic.c index 4fea9a578990..8d5f529a1dc1 100644 --- a/drivers/uio/uio_hv_generic.c +++ b/drivers/uio/uio_hv_generic.c @@ -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; |