ExternalVendorCode/genode
1
0
Fork 0
mirror of https://github.com/genodelabs/genode.git synced 2025-06-17 14:48:20 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

x86: support dynamic upgrades for platform driver

Browse Source 
and, especially, for the device_pd. Account all resources per platform session
separately.

Fixes #1539
This commit is contained in:
Alexander Boettcher
2015-11-16 14:04:04 +01:00
committed by Christian Helmuth
parent 4c4e7c64d0
commit 92cb9eb06d
16 changed files with 341 additions and 147 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
repos/dde_bsd/src/lib/audio/bus.cc
View File

@ -19,6 +19,7 @@
#include <io_mem_session/connection.h>
#include <platform_session/connection.h>
#include <platform_device/client.h>
#include <util/retry.h>
/* local includes */
#include "bsd.h"
@ -120,13 +121,17 @@ class Pci_driver : public Bsd::Bus_driver
*/
Genode::Ram_dataspace_capability _alloc_dma_memory(Genode::size_t size)
{
try {
char buf[32];
Genode::snprintf(buf, sizeof(buf), "ram_quota=%zu", size);
Genode::env()->parent()->upgrade(_pci.cap(), buf);
size_t donate = size;
return _pci.alloc_dma_buffer(size);
} catch (...) { return Genode::Ram_dataspace_capability(); }
return Genode::retry<Platform::Session::Out_of_metadata>(
[&] () { return _pci.alloc_dma_buffer(size); },
[&] () {
char quota[32];
Genode::snprintf(quota, sizeof(quota), "ram_quota=%zd",
donate);
Genode::env()->parent()->upgrade(_pci.cap(), quota);
donate = donate * 2 > size ? 4096 : donate * 2;
});
}
public:
@ -374,7 +379,18 @@ extern "C" int pci_mapreg_map(struct pci_attach_args *pa,
}
cmd |= Pci_driver::CMD_MASTER;
device.config_write(Pci_driver::CMD, cmd, Platform::Device::ACCESS_16BIT);
Genode::size_t donate = 4096;
Genode::retry<Platform::Device::Quota_exceeded>(
[&] () { device.config_write(Pci_driver::CMD, cmd,
Platform::Device::ACCESS_16BIT); },
[&] () {
char quota[32];
Genode::snprintf(quota, sizeof(quota), "ram_quota=%zd",
donate);
Genode::env()->parent()->upgrade(drv->pci().cap(), quota);
donate *= 2;
});
return 0;
}