kernel/io/mem.rs

12 use crate::io::resource::Region;
13 use crate::io::resource::Resource;
18 /// An IO request for a specific device and resource.
21     resource: &'a Resource,
29     /// Callers must ensure that `resource` is valid for `device` during the
31     pub(crate) unsafe fn new(device: &'a Device<Bound>, resource: &'a Resource) -> Self {
32         IoRequest { device, resource }
164     fn ioremap(resource: &Resource) -> Result<Self> {
165         let start = resource.start();
166         let size = resource.size();
167         let name = resource.name().unwrap_or(c_str!(""));
169         let region = resource
174                 io::resource::Flags::IORESOURCE_MEM,
178         let iomem = IoMem::ioremap(resource)?;
191         let res = io_request.resource;
219     fn ioremap(resource: &Resource) -> Result<Self> {
224         let size = resource.size().try_into()?;
229         let res_start = resource.start();
231         let addr = if resource
233             .contains(io::resource::Flags::IORESOURCE_MEM_NONPOSTED)
236             // - `res_start` and `size` are read from a presumably valid `struct resource`.
241             // - `res_start` and `size` are read from a presumably valid `struct resource`.
259         let res = io_request.resource;