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oss: use pci_drv with class code/mask

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This commit is contained in:
Alexander Boettcher 2013-02-18 11:49:11 +01:00 committed by Norman Feske
parent d447910520
commit 934983465c
1 changed files with 51 additions and 42 deletions
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93
dde_oss/src/drivers/oss/driver.cc
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@ -1,6 +1,6 @@
/*
* \brief Driver probing and registration
* \author Sebasitian Sumpf
* \author Sebastian Sumpf
* \date 2012-11-20
*/
@ -32,7 +32,7 @@ class Driver
enum { MAX_DRIVER = 10 };
oss_driver *_drivers[MAX_DRIVER + 1]; /* reigsted drivers */
oss_driver *_drivers[MAX_DRIVER + 1]; /* registered drivers */
Driver()
{
@ -75,6 +75,30 @@ class Driver
return 0;
}
/**
* Scan pci bus for sound devices
*/
Pci::Device_capability _scan_pci(Pci::Device_capability const &prev,
Pci::Connection &pci)
{
/* check for audio device class */
enum {
CLASS_MASK = 0xff0000,
CLASS_MULTIMEDIA = 0x40000, /* class multimedia */
};
/*
* Just test for multimedia class, since some devices (e.g., Intel
* hda) do set the subclass to something different then audio (0x1).
*/
Pci::Device_capability cap;
cap = pci.next_device(prev, CLASS_MULTIMEDIA, CLASS_MASK);
if (prev.valid())
pci.release_device(prev);
return cap;
}
public:
static Driver *d()
@ -104,55 +128,40 @@ class Driver
{
using namespace Genode;
Pci::Connection pci;
Pci::Device_capability cap = pci.first_device();
Pci::Device_capability old;
Pci::Device_capability cap;
oss_driver *driver = 0;
while (cap.valid()) {
while ((cap = _scan_pci(cap, pci)).valid())
{
Pci::Device_client client(cap);
/* check for audio device class */
enum {
CLASS_MASK = 0xff0000,
CLASS_MULTIMEDIA = 0x40000, /* class multimedia */
};
if (!(driver = _probe_driver(cap)))
continue;
/*
* Just test for multimedia class, since some devices (e.g., intel
* hda) do set the subclass to something different then audio (0x1).
*/
bool audio = (client.class_code() & CLASS_MASK) == CLASS_MULTIMEDIA;
if (audio && (driver = _probe_driver(cap))) {
uint8_t bus, dev, func;
client.bus_address(&bus, &dev, &func);
uint8_t bus, dev, func;
client.bus_address(&bus, &dev, &func);
/* setup oss device */
oss_device_t *ossdev = new (env()->heap()) oss_device_t;
Genode::memset(ossdev, 0, sizeof(oss_device_t));
/* setup oss device */
oss_device_t *ossdev = new (env()->heap()) oss_device_t;
Genode::memset(ossdev, 0, sizeof(oss_device_t));
ossdev->bus = bus;
ossdev->dev = dev;
ossdev->fun = func;
ossdev->bus = bus;
ossdev->dev = dev;
ossdev->fun = func;
/* set I/O resources */
for (int i = 0; i < Pci::Device::NUM_RESOURCES; i++) {
Pci::Device::Resource res = client.resource(i);
ossdev->res[i].base = res.base();
ossdev->res[i].size = res.size();
ossdev->res[i].io = res.type() == Pci::Device::Resource::IO ? 1 : 0;
}
ossdev->drv = driver;
/* set quirks */
setup_quirks(driver);
driver->attach(ossdev);
/* set I/O resources */
for (int i = 0; i < Pci::Device::NUM_RESOURCES; i++) {
Pci::Device::Resource res = client.resource(i);
ossdev->res[i].base = res.base();
ossdev->res[i].size = res.size();
ossdev->res[i].io = res.type() == Pci::Device::Resource::IO ? 1 : 0;
}
old = cap;
cap = pci.next_device(cap);
pci.release_device(old);
ossdev->drv = driver;
/* set quirks */
setup_quirks(driver);
driver->attach(ossdev);
}
}
};