feat: devices via caps (BootInfo, init assigns devices, drivers map MMIO/DMA themselves, IRQ-driven input); drop boot device wiring and info pages; headless display fallback

crates/adapter-riscv/src/hw/mod.rs

@@ -2,4 +2,3 @@ pub mod plic;
 pub mod timer;
 pub mod uart;
 pub mod virtio_blk;
-pub mod virtio_gpu;

crates/adapter-riscv/src/hw/virtio_blk.rs

@@ -57,11 +57,6 @@ impl VirtioBlk {
         Some(Self { mmio, queue, dma })
     }
 
-    /// Physical address of the device's MMIO window.
-    pub fn base(&self) -> usize {
-        virt_to_phys(self.mmio.base())
-    }
-
     pub fn read_sector(&mut self, sector: u32, buf: &mut [u8; SECTOR_SIZE]) -> bool {
         block::read_sector(&self.mmio, &self.queue, &self.dma, sector, buf)
     }

crates/adapter-riscv/src/hw/virtio_gpu.rs

@@ -1,57 +0,0 @@
-use crate::mmu::{phys_to_virt, virt_to_phys};
-use hw_virtio::gpu::{self, GpuDmaAddrs};
-use hw_virtio::mmio::{self, DirectMmio};
-use hw_virtio::queue::{QUEUE_SIZE, QueueAddrs, VirtioQueue};
-use types::address::{PhysicalAddress, VirtualAddress};
-use types::display::Dimension;
-
-pub struct VirtioGpu {
-    mmio: DirectMmio,
-}
-
-impl VirtioGpu {
-    pub fn probe() -> Option<Self> {
-        let mmio = mmio::scan_for_device(phys_to_virt(mmio::MMIO_FIRST), mmio::DEVICE_ID_GPU)?;
-        Some(Self { mmio })
-    }
-
-    /// Physical address of the device's MMIO window.
-    pub fn base(&self) -> usize {
-        virt_to_phys(self.mmio.base())
-    }
-
-    pub fn mmio(&self) -> &DirectMmio {
-        &self.mmio
-    }
-
-    pub fn init_device(&self, vqueue_phys: usize) {
-        mmio::init_legacy_device(&self.mmio, vqueue_phys, QUEUE_SIZE as u32);
-    }
-
-    pub fn setup_framebuffer(
-        &self,
-        cmd_phys: usize,
-        vq_phys: usize,
-        fb_phys: usize,
-        width: Dimension,
-        height: Dimension,
-    ) -> bool {
-        let queue = VirtioQueue::new(QueueAddrs::from_base(phys_to_virt(vq_phys)));
-        let dma = GpuDmaAddrs {
-            cmd_pa: PhysicalAddress::from_raw(cmd_phys),
-            cmd_va: VirtualAddress::from_raw(phys_to_virt(cmd_phys)),
-            resp_pa: PhysicalAddress::from_raw(cmd_phys + 512),
-        };
-        let ok1 = gpu::create_2d(&self.mmio, &queue, &dma, 1, width, height);
-        let ok2 = gpu::attach_backing(
-            &self.mmio,
-            &queue,
-            &dma,
-            1,
-            PhysicalAddress::from_raw(fb_phys),
-            width.raw() as u32 * height.raw() as u32 * 4,
-        );
-        let ok3 = gpu::set_scanout(&self.mmio, &queue, &dma, 0, 1, width, height);
-        ok1 && ok2 && ok3
-    }
-}