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643747b912
The key changes in this patch are: * Buffer allocation is moved into a separate Buffer_pool helper. The implementation of the buffer allocation strategy does not change. The helper allocates a single RAM dataspace and splits it in multiple, equally sized chunks. * Management of main descriptor ring is enacapsulated in Descriptor_ring helper class. * Use separate RAM dataspaces for descriptor rings and buffers. Previously both of them were packed into a single dataspace. This might have been more RAM efficient, but IMO it made the code uglier and harder to understand. * All of the VirtIO::Queue members are now initialized on the class member initializer list. This is possible due to previously listed changes. * Since all VirtIO::Queue members are initalized on member initalizer list, some additional ones can be marked as const, ex _avail, _used ring pointers. * Move descriptor writing code into a common method used by both write_data and write_data_read_reply members. This avoids some code duplication between those methods. * Get rid of request_irq argument that most public VirtIO::Queue methods accept. None of the existing drivers use it and I doubt this will change any time soon. * Use Genode namespace by default in Virtio. This patch also fixes at least one bug that I discovered while working on VirtIO block device driver. Namely, when chaining descriptors only the first descriptor in the chain should be exposed in the available ring. Issue #4347 |
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| audio_in_session | ||
| audio_out_session | ||
| blit | ||
| block | ||
| block_session | ||
| capture_session | ||
| decorator | ||
| event_session | ||
| file_system | ||
| file_system_session | ||
| framebuffer_session | ||
| genode_c_api | ||
| gpio | ||
| gpio_session | ||
| gpu | ||
| gpu_session | ||
| gui_session | ||
| i2c_session | ||
| init | ||
| input | ||
| input_session | ||
| ldso | ||
| loader_session | ||
| mixer | ||
| net | ||
| nic | ||
| nic_session | ||
| nitpicker_gfx | ||
| os | ||
| packet_stream_rx | ||
| packet_stream_tx | ||
| pin_control_session | ||
| pin_state_session | ||
| platform_device | ||
| platform_session | ||
| pointer | ||
| ram_fs | ||
| report_rom | ||
| report_session | ||
| rtc_session | ||
| sandbox | ||
| smbios | ||
| spec | ||
| terminal | ||
| terminal_session | ||
| trace | ||
| uart_session | ||
| uplink_session | ||
| usb | ||
| usb_session | ||
| util | ||
| vfs | ||
| virtio | ||