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ahci: upgrade memory

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This commit is contained in:
Alexander Boettcher 2015-04-24 16:09:42 +02:00 committed by Christian Helmuth
parent 4ead4484ec
commit 6fa85dfd45
1 changed files with 26 additions and 6 deletions
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32
repos/os/src/drivers/ahci/x86/ahci_device.h
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@ -47,9 +47,17 @@ class Ahci_device : public Ahci_device_base
static Pci::Device_capability _scan_pci(Pci::Connection &pci, Pci::Device_capability prev_device_cap)
{
Pci::Device_capability device_cap;
device_cap = pci.next_device(prev_device_cap,
CLASS_MASS_STORAGE | SUBCLASS_AHCI,
CLASS_MASK);
for (unsigned i = 0; i < 2; i++) {
try {
device_cap = pci.next_device(prev_device_cap,
CLASS_MASS_STORAGE | SUBCLASS_AHCI,
CLASS_MASK);
break;
} catch (Pci::Device::Quota_exceeded) {
Genode::env()->parent()->upgrade(pci.cap(), "ram_quota=4096");
}
}
if (prev_device_cap.valid())
pci.release_device(prev_device_cap);
@ -189,7 +197,12 @@ class Ahci_device : public Ahci_device_base
device->_pci_device = pci_device;
/* trigger assignment of pci device to the ahci driver */
pci.config_extended(device_cap);
try {
pci.config_extended(device_cap);
} catch (Pci::Device::Quota_exceeded) {
Genode::env()->parent()->upgrade(pci.cap(), "ram_quota=4096");
pci.config_extended(device_cap);
}
/* get device ready */
device->_init(pci_device);
@ -204,8 +217,15 @@ class Ahci_device : public Ahci_device_base
return 0;
}
Ram_dataspace_capability alloc_dma_buffer(size_t size) {
return _pci.alloc_dma_buffer(size); }
Ram_dataspace_capability alloc_dma_buffer(size_t size)
{
/* transfer quota to pci driver, otherwise we get a exception */
char quota[32];
Genode::snprintf(quota, sizeof(quota), "ram_quota=%zd", size);
Genode::env()->parent()->upgrade(_pci.cap(), quota);
return _pci.alloc_dma_buffer(size);
}
void free_dma_buffer(Ram_dataspace_capability cap) {
return _pci.free_dma_buffer(cap); }