/*
* \brief Driver manager
* \author Norman Feske
* \date 2017-06-13
*/
/// This is forked from Genode 24.02's driver_manager
/*
* Copyright (C) 2017 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU Affero General Public License version 3.
*/
/* Genode includes */
#include <base/component.h>
#include <base/registry.h>
#include <base/attached_rom_dataspace.h>
#include <os/reporter.h>
#include <block_session/block_session.h>
#include <rm_session/rm_session.h>
#include <capture_session/capture_session.h>
#include <gpu_session/gpu_session.h>
#include <io_mem_session/io_mem_session.h>
#include <io_port_session/io_port_session.h>
#include <timer_session/timer_session.h>
#include <log_session/log_session.h>
#include <usb_session/usb_session.h>
#include <platform_session/platform_session.h>
namespace Driver_manager {
using namespace Genode;
struct Main;
struct Device_driver;
struct Intel_gpu_driver;
struct Intel_fb_driver;
struct Vesa_fb_driver;
struct Boot_fb_driver;
struct Ahci_driver;
struct Nvme_driver;
struct Priority { int value; };
struct Version { unsigned value; };
}
class Driver_manager::Device_driver : Noncopyable
{
public:
typedef String<64> Name;
typedef String<100> Binary;
typedef String<32> Service;
protected:
static void _gen_common_start_node_content(Xml_generator &xml,
Name const &name,
Binary const &binary,
Ram_quota ram,
Cap_quota caps,
Priority priority,
Version version)
{
xml.attribute("name", name);
xml.attribute("caps", String<64>(caps));
xml.attribute("priority", priority.value);
xml.attribute("version", version.value);
xml.node("binary", [&] () { xml.attribute("name", binary); });
xml.node("resource", [&] () {
xml.attribute("name", "RAM");
xml.attribute("quantum", String<64>(ram));
});
}
template <typename SESSION>
static void _gen_provides_node(Xml_generator &xml)
{
xml.node("provides", [&] () {
xml.node("service", [&] () {
xml.attribute("name", SESSION::service_name()); }); });
}
static void _gen_config_route(Xml_generator &xml, char const *config_name)
{
xml.node("service", [&] () {
xml.attribute("name", Rom_session::service_name());
xml.attribute("label", "config");
xml.node("parent", [&] () {
xml.attribute("label", config_name); });
});
}
static void _gen_default_parent_route(Xml_generator &xml)
{
xml.node("any-service", [&] () {
xml.node("parent", [&] () { }); });
}
template <typename SESSION>
static void _gen_forwarded_service(Xml_generator &xml,
Device_driver::Name const &name)
{
xml.node("service", [&] () {
xml.attribute("name", SESSION::service_name());
xml.node("default-policy", [&] () {
xml.node("child", [&] () {
xml.attribute("name", name);
});
});
});
};
virtual ~Device_driver() { }
public:
virtual void generate_start_node(Xml_generator &xml) const = 0;
};
struct Driver_manager::Intel_gpu_driver : Device_driver
{
Version version { 0 };
void generate_start_node(Xml_generator &xml) const override
{
_gen_forwarded_service<Gpu::Session>(xml, "intel_gpu_drv");
xml.node("start", [&] () {
_gen_common_start_node_content(xml, "intel_gpu_drv", "intel_gpu_drv",
Ram_quota{64*1024*1024}, Cap_quota{1400},
Priority{0}, version);
xml.node("provides", [&] () {
xml.node("service", [&] () {
xml.attribute("name", Gpu::Session::service_name()); });
xml.node("service", [&] () {
xml.attribute("name", Platform::Session::service_name()); });
});
xml.node("route", [&] () {
_gen_config_route(xml, "gpu_drv.config");
_gen_default_parent_route(xml);
});
});
}
};
struct Driver_manager::Intel_fb_driver : Device_driver
{
Intel_gpu_driver intel_gpu_driver { };
Version version { 0 };
void generate_start_node(Xml_generator &xml) const override
{
intel_gpu_driver.generate_start_node(xml);
xml.node("start", [&] () {
_gen_common_start_node_content(xml, "intel_fb_drv", "pc_intel_fb_drv",
Ram_quota{42*1024*1024}, Cap_quota{800},
Priority{0}, version);
xml.node("heartbeat", [&] () { });
xml.node("route", [&] () {
_gen_config_route(xml, "fb_drv.config");
xml.node("service", [&] () {
xml.attribute("name", Platform::Session::service_name());
xml.node("child", [&] () {
xml.attribute("name", "intel_gpu_drv");
});
});
_gen_default_parent_route(xml);
});
});
}
};
struct Driver_manager::Vesa_fb_driver : Device_driver
{
void generate_start_node(Xml_generator &xml) const override
{
xml.node("start", [&] () {
_gen_common_start_node_content(xml, "vesa_fb", "vesa_fb",
#if 0
Ram_quota{8*1024*1024}, Cap_quota{110},
#else
/// VESA needs *more* than 110 caps on bare metal (e.g. on a T410) ; this might have escaped Genode's Q.A. as they probably test the native Intel FB driver, rather than Vesa FB
// We also need to raise the RAM quota if using high resolutions like 1920px or even 2560px (as tested in qemu)
Ram_quota{16*1024*1024}, Cap_quota{150},
#endif
Priority{-1}, Version{0});
xml.node("route", [&] () {
_gen_config_route(xml, "fb_drv.config");
_gen_default_parent_route(xml);
});
});
}
};
/*
Those generate e.g.:
<start name="vesa_fb" caps="200">
<binary name="vesa_fb"/>
<resource name="RAM" quantum="9M"/>
<route>
<service name="Platform"> <child name="platform"/> </service>
<service name="ROM" label="config">
<parent label="vesa.config"/> </service>
<any-service> <parent/> <any-child /> </any-service>
</route>
</start>
<start name="intel_fb" caps="1000">
<binary name="pc_intel_fb"/>
<resource name="RAM" quantum="90M"/>
<route>
<service name="Platform"> <child name="intel_gpu"/> </service>
<service name="ROM" label="config"> <parent label="fb_drv.config"/> </service>
<service name="Report"> <child name="report_rom"/> </service>
<any-service> <parent/> <any-child /> </any-service>
</route>
</start>
<start name="intel_gpu" caps="2000">
<resource name="RAM" quantum="90M"/>
<provides>
<service name="Gpu"/>
<service name="Platform"/>
</provides>
<config max_framebuffer_memory="64M">
<device vendor="0x8086" device="0x1606" generation="8" platform="broadwell" description="HD Graphics (BDW GT1 ULT)"/>
<device vendor="0x8086" device="0x1616" generation="8" platform="broadwell" description="HD Graphics 5500 (BDW GT2 ULT)"/>
<device vendor="0x8086" device="0x1622" generation="8" platform="broadwell" description="Iris Pro Graphics 6200 (BDW GT3e)"/>
<device vendor="0x8086" device="0x1916" generation="9" platform="skylake" description="HD Graphics 520 (Skylake, Gen9)"/>
<device vendor="0x8086" device="0x191b" generation="9" platform="skylake" description="HD Graphics 530 (Skylake, Gen9)"/>
<device vendor="0x8086" device="0x5916" generation="9" platform="kabylake" description="HD Graphics 620 (Kaby Lake, Gen9p5)"/>
<device vendor="0x8086" device="0x5917" generation="9" platform="kabylake" description="UHD Graphics 620 (Kaby Lake, Gen9p5)"/>
<device vendor="0x8086" device="0x591b" generation="9" platform="kabylake" description="HD Graphics 630 (Kaby Lake, Gen9p5)"/>
<device vendor="0x8086" device="0x3ea0" generation="9" platform="whiskeylake" description="UHD Graphics 620 (Whiskey Lake, Gen9p5)"/>
<device vendor="0x8086" device="0x9a49" generation="12" platform="tigerlake" description="Iris Xe Graphics (Tiger Lake, Xe)"/>
</config>
<route>
<service name="Platform"> <child name="platform"/> </service>
<any-service> <parent /> <any-child/> </any-service>
</route>
</start>
*/
struct Driver_manager::Boot_fb_driver : Device_driver
{
Ram_quota const _ram_quota;
struct Mode
{
enum { TYPE_RGB_COLOR = 1 };
unsigned _pitch = 0, _height = 0;
Mode() { }
Mode(Xml_node node)
:
_pitch(node.attribute_value("pitch", 0U)),
_height(node.attribute_value("height", 0U))
{
/* check for unsupported type */
if (node.attribute_value("type", 0U) != TYPE_RGB_COLOR)
_pitch = _height = 0;
}
size_t num_bytes() const { return _pitch * _height + 1024*1024; }
bool valid() const { return _pitch * _height != 0; }
};
Boot_fb_driver(Mode const mode) : _ram_quota(Ram_quota{mode.num_bytes()}) { }
void generate_start_node(Xml_generator &xml) const override
{
xml.node("start", [&] () {
_gen_common_start_node_content(xml, "boot_fb", "boot_fb",
_ram_quota, Cap_quota{100},
Priority{-1}, Version{0});
xml.node("route", [&] () {
_gen_config_route(xml, "fb_drv.config");
_gen_default_parent_route(xml);
});
});
}
};
struct Driver_manager::Ahci_driver : Device_driver
{
void generate_start_node(Xml_generator &xml) const override
{
xml.node("start", [&] () {
_gen_common_start_node_content(xml, "ahci", "ahci",
#if 0
Ram_quota{10*1024*1024}, Cap_quota{100},
#else
/// ahci(_drv) runs out of caps on bare metal (e.g. T410) if provided with only 100 caps
Ram_quota{10*1024*1024}, Cap_quota{150},
#endif
Priority{-1}, Version{0});
_gen_provides_node<Block::Session>(xml);
xml.node("config", [&] () {
xml.node("report", [&] () { xml.attribute("ports", "yes"); });
for (unsigned i = 0; i < 6; i++) {
xml.node("policy", [&] () {
xml.attribute("label_suffix", String<64>("ahci-", i));
xml.attribute("device", i);
xml.attribute("writeable", "yes");
});
}
});
xml.node("heartbeat", [&] () { });
xml.node("route", [&] () {
xml.node("service", [&] () {
xml.attribute("name", "Report");
xml.node("parent", [&] () { xml.attribute("label", "ahci_ports"); });
});
_gen_default_parent_route(xml);
});
});
}
typedef String<32> Default_label;
void gen_service_forwarding_policy(Xml_generator &xml,
Default_label const &default_label) const
{
for (unsigned i = 0; i < 6; i++) {
xml.node("policy", [&] () {
xml.attribute("label_suffix", String<64>("ahci-", i));
xml.node("child", [&] () {
xml.attribute("name", "ahci"); });
});
}
if (default_label.valid()) {
xml.node("policy", [&] () {
xml.attribute("label_suffix", " default");
xml.node("child", [&] () {
xml.attribute("name", "ahci");
xml.attribute("label", default_label);
});
});
}
}
};
struct Driver_manager::Nvme_driver : Device_driver
{
void generate_start_node(Xml_generator &xml) const override
{
xml.node("start", [&] () {
_gen_common_start_node_content(xml, "nvme", "nvme",
Ram_quota{8*1024*1024}, Cap_quota{100},
Priority{-1}, Version{0});
_gen_provides_node<Block::Session>(xml);
xml.node("config", [&] () {
xml.node("report", [&] () { xml.attribute("namespaces", "yes"); });
xml.node("policy", [&] () {
xml.attribute("label_suffix", String<64>("nvme-0"));
xml.attribute("namespace", 1);
xml.attribute("writeable", "yes");
});
});
xml.node("route", [&] () {
xml.node("service", [&] () {
xml.attribute("name", "Report");
xml.node("parent", [&] () { xml.attribute("label", "nvme_ns"); });
});
_gen_default_parent_route(xml);
});
});
}
typedef String<32> Default_label;
void gen_service_forwarding_policy(Xml_generator &xml,
Default_label const &default_label) const
{
xml.node("policy", [&] () {
xml.attribute("label_suffix", String<64>("nvme-0"));
xml.node("child", [&] () {
xml.attribute("name", "nvme"); });
});
if (default_label.valid()) {
xml.node("policy", [&] () {
xml.attribute("label_suffix", " default");
xml.node("child", [&] () {
xml.attribute("name", "nvme");
xml.attribute("label", default_label);
});
});
}
}
};
struct Driver_manager::Main
{
Env &_env;
Attached_rom_dataspace _platform { _env, "platform_info" };
Attached_rom_dataspace _usb_devices { _env, "usb_devices" };
Attached_rom_dataspace _usb_policy { _env, "usb_policy" };
Attached_rom_dataspace _devices { _env, "devices" };
Attached_rom_dataspace _ahci_ports { _env, "ahci_ports" };
Attached_rom_dataspace _nvme_ns { _env, "nvme_ns" };
Attached_rom_dataspace _dynamic_state { _env, "dynamic_state" };
Reporter _init_config { _env, "config", "init.config" };
Reporter _usb_drv_config { _env, "config", "usb_drv.config" };
Reporter _block_devices { _env, "block_devices" };
Constructible<Intel_fb_driver> _intel_fb_driver { };
Constructible<Vesa_fb_driver> _vesa_fb_driver { };
Constructible<Boot_fb_driver> _boot_fb_driver { };
Constructible<Ahci_driver> _ahci_driver { };
Constructible<Nvme_driver> _nvme_driver { };
bool _devices_rom_parsed { false };
bool _use_ohci { true };
Boot_fb_driver::Mode _boot_fb_mode() const
{
try {
Xml_node fb = _platform.xml().sub_node("boot").sub_node("framebuffer");
return Boot_fb_driver::Mode(fb);
} catch (...) { }
return Boot_fb_driver::Mode();
}
void _handle_devices_update();
Signal_handler<Main> _devices_update_handler {
_env.ep(), *this, &Main::_handle_devices_update };
void _handle_usb_devices_update();
Signal_handler<Main> _usb_devices_update_handler {
_env.ep(), *this, &Main::_handle_usb_devices_update };
Signal_handler<Main> _usb_policy_update_handler {
_env.ep(), *this, &Main::_handle_usb_devices_update };
void _handle_ahci_ports_update();
Signal_handler<Main> _ahci_ports_update_handler {
_env.ep(), *this, &Main::_handle_ahci_ports_update };
void _handle_nvme_ns_update();
Signal_handler<Main> _nvme_ns_update_handler {
_env.ep(), *this, &Main::_handle_nvme_ns_update };
Signal_handler<Main> _dynamic_state_handler {
_env.ep(), *this, &Main::_handle_dynamic_state };
void _handle_dynamic_state();
static void _gen_parent_service_xml(Xml_generator &xml, char const *name)
{
xml.node("service", [&] () { xml.attribute("name", name); });
};
void _generate_init_config (Reporter &) const;
void _generate_usb_drv_config (Reporter &, Xml_node, Xml_node) const;
void _generate_block_devices (Reporter &) const;
Ahci_driver::Default_label _default_block_device() const;
void _generate_block_devices()
{
/* devices must be detected before the checks below can be conducted */
if (!_devices_rom_parsed)
return;
/* check that all drivers completed initialization before reporting */
if (_ahci_driver.constructed() && !_ahci_ports.xml().has_type("ports"))
return;
if (_nvme_driver.constructed() && !_nvme_ns.xml().has_type("controller"))
return;
_generate_block_devices(_block_devices);
}
Main(Env &env) : _env(env)
{
_init_config.enabled(true);
_usb_drv_config.enabled(true);
_block_devices.enabled(true);
_devices .sigh(_devices_update_handler);
_usb_policy .sigh(_usb_policy_update_handler);
_ahci_ports .sigh(_ahci_ports_update_handler);
_nvme_ns .sigh(_nvme_ns_update_handler);
_dynamic_state.sigh(_dynamic_state_handler);
_generate_init_config(_init_config);
_handle_devices_update();
_handle_ahci_ports_update();
_handle_nvme_ns_update();
}
};
void Driver_manager::Main::_handle_devices_update()
{
_devices.update();
/* decide about fb not before the first valid pci report is available */
if (!_devices.valid())
return;
bool has_vga = false;
bool has_intel_graphics = false;
bool has_ahci = false;
bool has_nvme = false;
Boot_fb_driver::Mode const boot_fb_mode = _boot_fb_mode();
_devices.xml().for_each_sub_node([&] (Xml_node device) {
device.with_optional_sub_node("pci-config", [&] (Xml_node pci) {
uint16_t const vendor_id = (uint16_t)pci.attribute_value("vendor_id", 0U);
uint16_t const class_code = (uint16_t)(pci.attribute_value("class", 0U) >> 8);
enum {
VENDOR_VBOX = 0x80EEU,
VENDOR_INTEL = 0x8086U,
CLASS_VGA = 0x300U,
CLASS_AHCI = 0x106U,
CLASS_NVME = 0x108U,
};
if (class_code == CLASS_VGA)
has_vga = true;
if (vendor_id == VENDOR_INTEL && class_code == CLASS_VGA)
has_intel_graphics = true;
if (vendor_id == VENDOR_INTEL && class_code == CLASS_AHCI)
has_ahci = true;
if (vendor_id == VENDOR_VBOX)
_use_ohci = false;
if (class_code == CLASS_NVME)
has_nvme = true;
});
});
if (!_intel_fb_driver.constructed() && has_intel_graphics) {
_intel_fb_driver.construct();
_vesa_fb_driver.destruct();
_boot_fb_driver.destruct();
_generate_init_config(_init_config);
}
if (!_boot_fb_driver.constructed() && boot_fb_mode.valid() && !has_intel_graphics) {
_intel_fb_driver.destruct();
_vesa_fb_driver.destruct();
_boot_fb_driver.construct(boot_fb_mode);
_generate_init_config(_init_config);
}
if (!_vesa_fb_driver.constructed() && has_vga && !has_intel_graphics &&
!boot_fb_mode.valid()) {
_intel_fb_driver.destruct();
_boot_fb_driver.destruct();
_vesa_fb_driver.construct();
_generate_init_config(_init_config);
}
if (!_ahci_driver.constructed() && has_ahci) {
_ahci_driver.construct();
_generate_init_config(_init_config);
}
if (!_nvme_driver.constructed() && has_nvme) {
_nvme_driver.construct();
_generate_init_config(_init_config);
}
/* generate initial usb driver config not before we know whether ohci should be enabled */
_generate_usb_drv_config(_usb_drv_config,
Xml_node("<devices/>"),
Xml_node("<usb/>"));
_usb_devices.sigh(_usb_devices_update_handler);
_handle_usb_devices_update();
_devices_rom_parsed = true;
}
void Driver_manager::Main::_handle_ahci_ports_update()
{
_ahci_ports.update();
_generate_block_devices();
/* update service forwarding rules */
_generate_init_config(_init_config);
}
void Driver_manager::Main::_handle_nvme_ns_update()
{
_nvme_ns.update();
_generate_block_devices();
/* update service forwarding rules */
_generate_init_config(_init_config);
}
void Driver_manager::Main::_handle_usb_devices_update()
{
_usb_devices.update();
_usb_policy.update();
_generate_usb_drv_config(_usb_drv_config, _usb_devices.xml(), _usb_policy.xml());
}
void Driver_manager::Main::_generate_init_config(Reporter &init_config) const
{
Reporter::Xml_generator xml(init_config, [&] () {
xml.attribute("verbose", false);
xml.attribute("prio_levels", 2);
xml.node("report", [&] () {
xml.attribute("child_ram", true);
xml.attribute("delay_ms", 2500);
});
xml.node("heartbeat", [&] () { xml.attribute("rate_ms", 2500); });
xml.node("parent-provides", [&] () {
_gen_parent_service_xml(xml, Rom_session::service_name());
_gen_parent_service_xml(xml, Io_mem_session::service_name());
_gen_parent_service_xml(xml, Io_port_session::service_name());
_gen_parent_service_xml(xml, Cpu_session::service_name());
_gen_parent_service_xml(xml, Pd_session::service_name());
_gen_parent_service_xml(xml, Rm_session::service_name());
_gen_parent_service_xml(xml, Log_session::service_name());
_gen_parent_service_xml(xml, Timer::Session::service_name());
_gen_parent_service_xml(xml, Platform::Session::service_name());
_gen_parent_service_xml(xml, Report::Session::service_name());
_gen_parent_service_xml(xml, Usb::Session::service_name());
_gen_parent_service_xml(xml, Capture::Session::service_name());
});
if (_intel_fb_driver.constructed())
_intel_fb_driver->generate_start_node(xml);
if (_vesa_fb_driver.constructed())
_vesa_fb_driver->generate_start_node(xml);
if (_boot_fb_driver.constructed())
_boot_fb_driver->generate_start_node(xml);
if (_ahci_driver.constructed())
_ahci_driver->generate_start_node(xml);
if (_nvme_driver.constructed())
_nvme_driver->generate_start_node(xml);
/* block-service forwarding rules */
bool const ahci = _ahci_driver.constructed() && _ahci_ports.xml().has_sub_node("port");
bool const nvme = _nvme_driver.constructed() && _nvme_ns.xml().has_sub_node("namespace");
if (!ahci && !nvme) return;
bool const ahci_and_nvme = ahci && nvme;
xml.node("service", [&] () {
xml.attribute("name", Block::Session::service_name());
if (ahci)
_ahci_driver->gen_service_forwarding_policy(xml,
ahci_and_nvme ? Ahci_driver::Default_label() : _default_block_device());
if (nvme)
_nvme_driver->gen_service_forwarding_policy(xml,
ahci_and_nvme ? Nvme_driver::Default_label() : "nvme-0");
});
});
}
Driver_manager::Ahci_driver::Default_label
Driver_manager::Main::_default_block_device() const
{
unsigned num_devices = 0;
Ahci_driver::Default_label result;
_ahci_ports.xml().for_each_sub_node([&] (Xml_node ahci_port) {
/* count devices */
num_devices++;
unsigned long const num = ahci_port.attribute_value("num", 0UL);
result = Ahci_driver::Default_label("ahci-", num);
});
/* if there is more than one device, we don't return a default device */
return (num_devices == 1) ? result : Ahci_driver::Default_label();
}
void Driver_manager::Main::_generate_block_devices(Reporter &block_devices) const
{
Reporter::Xml_generator xml(block_devices, [&] () {
/* mention default block device in 'default' attribute */
Ahci_driver::Default_label const default_label = _default_block_device();
if (default_label.valid())
xml.attribute("default", default_label);
_ahci_ports.xml().for_each_sub_node([&] (Xml_node ahci_port) {
xml.node("device", [&] () {
unsigned long const
num = ahci_port.attribute_value("num", 0UL),
block_count = ahci_port.attribute_value("block_count", 0UL),
block_size = ahci_port.attribute_value("block_size", 0UL);
typedef String<80> Model;
Model const model = ahci_port.attribute_value("model", Model());
xml.attribute("label", String<64>("ahci-", num));
xml.attribute("block_count", block_count);
xml.attribute("block_size", block_size);
xml.attribute("model", model);
});
});
/* for now just report the first name space */
if (_nvme_ns.xml().has_sub_node("namespace")) {
Xml_node nvme_ctrl = _nvme_ns.xml();
Xml_node nvme_ns = _nvme_ns.xml().sub_node("namespace");
xml.node("device", [&] () {
unsigned long const
block_count = nvme_ns.attribute_value("block_count", 0UL),
block_size = nvme_ns.attribute_value("block_size", 0UL);
typedef String<40+1> Model;
Model const model = nvme_ctrl.attribute_value("model", Model());
typedef String<20+1> Serial;
Serial const serial = nvme_ctrl.attribute_value("serial", Serial());
xml.attribute("label", String<16>("nvme-0"));
xml.attribute("block_count", block_count);
xml.attribute("block_size", block_size);
xml.attribute("model", model);
xml.attribute("serial", serial);
});
}
});
}
void Driver_manager::Main::_generate_usb_drv_config(Reporter &usb_drv_config,
Xml_node devices,
Xml_node policy) const
{
Reporter::Xml_generator xml(usb_drv_config, [&] () {
xml.attribute("bios_handoff", false);
xml.node("report", [&] () {
xml.attribute("config", true);
xml.attribute("devices", true);
});
/* incorporate user-managed policy */
policy.with_raw_content([&] (char const *start, size_t length) {
xml.append(start, length); });
/* usb hid drv gets all hid devices */
#if 0
xml.node("policy", [&] () {
xml.attribute("label_prefix", "usb_hid_drv");
xml.attribute("class", "0x3");
});
#else
/// The above no longer works in 24.04, adapt to 24.04 usb-hid changes:
xml.node("policy", [&] () {
xml.attribute("label_prefix", "usb_hid_drv");
xml.node("device", [&] () {
xml.attribute("class", "0x3"); }); });
#endif
devices.for_each_sub_node("device", [&] (Xml_node device) {
typedef String<64> Label;
typedef String<32> Id;
Label const label = device.attribute_value("label", Label());
Id const vendor_id = device.attribute_value("vendor_id", Id());
Id const product_id = device.attribute_value("product_id", Id());
/*
* Limit USB sessions to storage and vendor specific in order to avoid
* conflicts with the USB driver's built-in HID drivers.
*/
unsigned long const class_code = device.attribute_value("class", 0UL);
enum { USB_CLASS_MASS_STORAGE = 8, USB_CLASS_VENDOR_SPECIFIC = 0xff };
bool const expose_as_usb_raw = (class_code == USB_CLASS_MASS_STORAGE) ||
(class_code == USB_CLASS_VENDOR_SPECIFIC);
if (!expose_as_usb_raw)
return;
xml.node("policy", [&] () {
xml.attribute("label_suffix", label);
xml.attribute("vendor_id", vendor_id);
xml.attribute("product_id", product_id);
/* annotate policy to make storage devices easy to spot */
if (class_code == USB_CLASS_MASS_STORAGE)
xml.attribute("class", "storage");
});
});
});
}
void Driver_manager::Main::_handle_dynamic_state()
{
_dynamic_state.update();
bool reconfigure_dynamic_init = false;
_dynamic_state.xml().for_each_sub_node([&] (Xml_node child) {
using Name = Device_driver::Name;
Name const name = child.attribute_value("name", Name());
if (name == "intel_fb_drv") {
unsigned long const skipped_heartbeats =
child.attribute_value("skipped_heartbeats", 0U);
if (skipped_heartbeats >= 2) {
if (_intel_fb_driver.constructed()) {
_intel_fb_driver->version.value++;
reconfigure_dynamic_init = true;
}
}
}
});
if (reconfigure_dynamic_init)
_generate_init_config(_init_config);
}
void Component::construct(Genode::Env &env) { static Driver_manager::Main main(env); }