4d442bca30
This patch reduces the number of exception types by facilitating globally defined exceptions for common usage patterns shared by most services. In particular, RPC functions that demand a session-resource upgrade not longer reflect this condition via a session-specific exception but via the 'Out_of_ram' or 'Out_of_caps' types. Furthermore, the 'Parent::Service_denied', 'Parent::Unavailable', 'Root::Invalid_args', 'Root::Unavailable', 'Service::Invalid_args', 'Service::Unavailable', and 'Local_service::Factory::Denied' types have been replaced by the single 'Service_denied' exception type defined in 'session/session.h'. This consolidation eases the error handling (there are fewer exceptions to handle), alleviates the need to convert exceptions along the session-creation call chain, and avoids possible aliasing problems (catching the wrong type with the same name but living in a different scope).
591 lines
15 KiB
C++
591 lines
15 KiB
C++
/*
|
|
* \brief Audio driver BSD API emulation
|
|
* \author Josef Soentgen
|
|
* \date 2014-11-16
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2014-2017 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/allocator_avl.h>
|
|
#include <base/log.h>
|
|
#include <base/object_pool.h>
|
|
#include <dataspace/client.h>
|
|
#include <io_port_session/connection.h>
|
|
#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>
|
|
#include <bsd_emul.h>
|
|
|
|
#include <extern_c_begin.h>
|
|
# include <dev/pci/pcidevs.h>
|
|
#include <extern_c_end.h>
|
|
|
|
|
|
extern "C" int probe_cfdata(struct pci_attach_args *);
|
|
|
|
namespace {
|
|
|
|
class Pci_driver : public Bsd::Bus_driver
|
|
{
|
|
public:
|
|
|
|
enum Pci_config { IRQ = 0x3c, CMD = 0x4,
|
|
CMD_IO = 0x1, CMD_MEMORY = 0x2, CMD_MASTER = 0x4 };
|
|
|
|
private:
|
|
|
|
Genode::Env &_env;
|
|
Genode::Allocator &_alloc;
|
|
|
|
struct pci_attach_args _pa { 0, 0, 0, 0, 0 };
|
|
|
|
Platform::Connection _pci { _env };
|
|
Platform::Device_capability _cap;
|
|
|
|
Genode::Io_port_connection *_io_port { nullptr };
|
|
|
|
/**
|
|
* The Dma_region_manager provides memory used for DMA
|
|
* and manages its mappings.
|
|
*/
|
|
struct Dma_region_manager : public Genode::Allocator_avl
|
|
{
|
|
Genode::Env &env;
|
|
|
|
enum { BACKING_STORE_SIZE = 1024 * 1024 };
|
|
|
|
Genode::addr_t base;
|
|
Genode::addr_t mapped_base;
|
|
|
|
bool _dma_initialized { false };
|
|
|
|
Pci_driver &_drv;
|
|
|
|
Dma_region_manager(Genode::Env &env,
|
|
Genode::Allocator &alloc,
|
|
Pci_driver &drv)
|
|
: Genode::Allocator_avl(&alloc), env(env), _drv(drv) { }
|
|
|
|
Genode::addr_t alloc(Genode::size_t size, int align)
|
|
{
|
|
using namespace Genode;
|
|
|
|
if (!_dma_initialized) {
|
|
try {
|
|
Ram_dataspace_capability cap = _drv._alloc_dma_memory(BACKING_STORE_SIZE);
|
|
mapped_base = (addr_t)env.rm().attach(cap);
|
|
base = Dataspace_client(cap).phys_addr();
|
|
|
|
Allocator_avl::add_range(mapped_base, BACKING_STORE_SIZE);
|
|
} catch (...) {
|
|
Genode::error("alloc DMA memory failed");
|
|
return 0;
|
|
}
|
|
_dma_initialized = true;
|
|
}
|
|
|
|
void *ptr = nullptr;
|
|
bool err = Allocator_avl::alloc_aligned(size, &ptr, align).error();
|
|
|
|
return err ? 0 : (addr_t)ptr;
|
|
}
|
|
|
|
void free(Genode::addr_t virt, Genode::size_t size) {
|
|
Genode::Allocator_avl::free((void*)virt, size); }
|
|
|
|
Genode::addr_t virt_to_phys(Genode::addr_t virt) {
|
|
return virt - mapped_base + base; }
|
|
|
|
Genode::addr_t phys_to_virt(Genode::addr_t phys) {
|
|
return phys - base + mapped_base; }
|
|
|
|
} _dma_region_manager;
|
|
|
|
/**
|
|
* Scan pci bus for sound devices
|
|
*/
|
|
Platform::Device_capability _scan_pci(Platform::Device_capability const &prev)
|
|
{
|
|
Platform::Device_capability cap;
|
|
/* shift values for Pci interface used by Genode */
|
|
cap = _pci.with_upgrade([&] () {
|
|
return _pci.next_device(prev,
|
|
PCI_CLASS_MULTIMEDIA << 16,
|
|
PCI_CLASS_MASK << 16); });
|
|
|
|
if (prev.valid())
|
|
_pci.release_device(prev);
|
|
return cap;
|
|
}
|
|
|
|
/**
|
|
* Allocate DMA memory from the PCI driver
|
|
*/
|
|
Genode::Ram_dataspace_capability _alloc_dma_memory(Genode::size_t size)
|
|
{
|
|
size_t donate = size;
|
|
|
|
return Genode::retry<Genode::Out_of_ram>(
|
|
[&] () {
|
|
return Genode::retry<Genode::Out_of_caps>(
|
|
[&] () { return _pci.alloc_dma_buffer(size); },
|
|
[&] () { _pci.upgrade_caps(2); });
|
|
},
|
|
[&] () {
|
|
_pci.upgrade_ram(donate);
|
|
donate = donate * 2 > size ? 4096 : donate * 2;
|
|
});
|
|
}
|
|
|
|
public:
|
|
|
|
Pci_driver(Genode::Env &env, Genode::Allocator &alloc)
|
|
:
|
|
_env(env), _alloc(alloc),
|
|
_dma_region_manager(_env, _alloc, *this)
|
|
{ }
|
|
|
|
Genode::Env &env() { return _env; }
|
|
|
|
Genode::Allocator &alloc() { return _alloc; }
|
|
|
|
Platform::Device_capability cap() { return _cap; }
|
|
|
|
Platform::Connection &pci() { return _pci; }
|
|
|
|
int probe()
|
|
{
|
|
_pci.upgrade_ram(8*1024);
|
|
|
|
/*
|
|
* We hide ourself in the bus_dma_tag_t as well as
|
|
* in the pci_chipset_tag_t field because they are
|
|
* used in all pci or bus related functions and are
|
|
* our access window, hence.
|
|
*/
|
|
_pa.pa_dmat = (bus_dma_tag_t)this;
|
|
_pa.pa_pc = (pci_chipset_tag_t)this;
|
|
|
|
int found = 0;
|
|
while ((_cap = _scan_pci(_cap)).valid()) {
|
|
Platform::Device_client device(_cap);
|
|
|
|
uint8_t bus, dev, func;
|
|
device.bus_address(&bus, &dev, &func);
|
|
|
|
if ((device.device_id() == PCI_PRODUCT_INTEL_CORE4G_HDA_2) ||
|
|
(bus == 0 && dev == 3 && func == 0)) {
|
|
Genode::warning("ignore ", (unsigned)bus, ":", (unsigned)dev, ":",
|
|
(unsigned)func, "not supported HDMI/DP HDA device");
|
|
continue;
|
|
}
|
|
|
|
/* we do the shifting to match OpenBSD's assumptions */
|
|
_pa.pa_tag = 0x80000000UL | (bus << 16) | (dev << 11) | (func << 8);
|
|
_pa.pa_class = device.class_code() << 8;
|
|
_pa.pa_id = device.vendor_id() | device.device_id() << 16;
|
|
|
|
if (probe_cfdata(&_pa)) {
|
|
found++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return found;
|
|
}
|
|
|
|
/**************************
|
|
** Bus_driver interface **
|
|
**************************/
|
|
|
|
Genode::Irq_session_capability irq_session() override {
|
|
return Platform::Device_client(_cap).irq(0); }
|
|
|
|
Genode::addr_t alloc(Genode::size_t size, int align) override {
|
|
return _dma_region_manager.alloc(size, align); }
|
|
|
|
void free(Genode::addr_t virt, Genode::size_t size) override {
|
|
_dma_region_manager.free(virt, size); }
|
|
|
|
Genode::addr_t virt_to_phys(Genode::addr_t virt) override {
|
|
return _dma_region_manager.virt_to_phys(virt); }
|
|
|
|
Genode::addr_t phys_to_virt(Genode::addr_t phys) override {
|
|
return _dma_region_manager.phys_to_virt(phys); }
|
|
};
|
|
|
|
|
|
/**********************
|
|
** Bus space helper **
|
|
**********************/
|
|
|
|
struct Bus_space
|
|
{
|
|
virtual unsigned read_1(unsigned long address) = 0;
|
|
virtual unsigned read_2(unsigned long address) = 0;
|
|
virtual unsigned read_4(unsigned long address) = 0;
|
|
|
|
virtual void write_1(unsigned long address, unsigned char value) = 0;
|
|
virtual void write_2(unsigned long address, unsigned short value) = 0;
|
|
virtual void write_4(unsigned long address, unsigned int value) = 0;
|
|
};
|
|
|
|
|
|
/*********************
|
|
** I/O port helper **
|
|
*********************/
|
|
|
|
struct Io_port : public Bus_space
|
|
{
|
|
Genode::Io_port_session_client _io;
|
|
Genode::addr_t _base;
|
|
|
|
Io_port(Genode::addr_t base, Genode::Io_port_session_capability cap)
|
|
: _io(cap), _base(base) { }
|
|
|
|
unsigned read_1(unsigned long address) {
|
|
return _io.inb(_base + address); }
|
|
|
|
unsigned read_2(unsigned long address) {
|
|
return _io.inw(_base + address); }
|
|
|
|
unsigned read_4(unsigned long address) {
|
|
return _io.inl(_base + address); }
|
|
|
|
void write_1(unsigned long address, unsigned char value) {
|
|
_io.outb(_base + address, value); }
|
|
|
|
void write_2(unsigned long address, unsigned short value) {
|
|
_io.outw(_base + address, value); }
|
|
|
|
void write_4(unsigned long address, unsigned int value) {
|
|
_io.outl(_base + address, value); }
|
|
};
|
|
|
|
|
|
/***********************
|
|
** I/O memory helper **
|
|
***********************/
|
|
|
|
struct Io_memory : public Bus_space
|
|
{
|
|
Genode::Io_mem_session_client _mem;
|
|
Genode::Io_mem_dataspace_capability _mem_ds;
|
|
Genode::addr_t _vaddr;
|
|
|
|
Io_memory(Genode::Region_map &rm,
|
|
Genode::addr_t base,
|
|
Genode::Io_mem_session_capability cap)
|
|
:
|
|
_mem(cap),
|
|
_mem_ds(_mem.dataspace())
|
|
{
|
|
if (!_mem_ds.valid())
|
|
throw Genode::Exception();
|
|
|
|
_vaddr = rm.attach(_mem_ds);
|
|
_vaddr |= base & 0xfff;
|
|
}
|
|
|
|
unsigned read_1(unsigned long address) {
|
|
return *(volatile unsigned char*)(_vaddr + address); }
|
|
|
|
unsigned read_2(unsigned long address) {
|
|
return *(volatile unsigned short*)(_vaddr + address); }
|
|
|
|
unsigned read_4(unsigned long address) {
|
|
return *(volatile unsigned int*)(_vaddr + address); }
|
|
|
|
void write_1(unsigned long address, unsigned char value) {
|
|
*(volatile unsigned char*)(_vaddr + address) = value; }
|
|
|
|
void write_2(unsigned long address, unsigned short value) {
|
|
*(volatile unsigned short*)(_vaddr + address) = value; }
|
|
|
|
void write_4(unsigned long address, unsigned int value) {
|
|
*(volatile unsigned int*)(_vaddr + address) = value; }
|
|
};
|
|
|
|
} /* anonymous namespace */
|
|
|
|
|
|
int Bsd::probe_drivers(Genode::Env &env, Genode::Allocator &alloc)
|
|
{
|
|
Genode::log("--- probe drivers ---");
|
|
static Pci_driver drv(env, alloc);
|
|
return drv.probe();
|
|
}
|
|
|
|
|
|
/**********************
|
|
** dev/pci/pcivar.h **
|
|
**********************/
|
|
|
|
extern "C" int pci_matchbyid(struct pci_attach_args *pa, const struct pci_matchid *ids, int num)
|
|
{
|
|
pci_vendor_id_t vid = PCI_VENDOR(pa->pa_id);
|
|
pci_product_id_t pid = PCI_PRODUCT(pa->pa_id);
|
|
|
|
for (int i = 0; i < num; i++) {
|
|
if (vid == ids[i].pm_vid && pid == ids[i].pm_pid)
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
extern "C" int pci_mapreg_map(struct pci_attach_args *pa,
|
|
int reg, pcireg_t type,
|
|
int flags, bus_space_tag_t *tagp,
|
|
bus_space_handle_t *handlep, bus_addr_t *basep,
|
|
bus_size_t *sizep, bus_size_t maxsize)
|
|
{
|
|
/* calculate BAR from given register */
|
|
int r = (reg - 0x10) / 4;
|
|
|
|
Pci_driver *drv = (Pci_driver*)pa->pa_pc;
|
|
|
|
Platform::Device_capability cap = drv->cap();
|
|
Platform::Device_client device(cap);
|
|
Platform::Device::Resource res = device.resource(r);
|
|
|
|
switch (res.type()) {
|
|
case Platform::Device::Resource::IO:
|
|
{
|
|
Io_port *iop = new (&drv->alloc())
|
|
Io_port(res.base(), device.io_port(r));
|
|
*tagp = (Genode::addr_t) iop;
|
|
break;
|
|
}
|
|
case Platform::Device::Resource::MEMORY:
|
|
{
|
|
Io_memory *iom = new (&drv->alloc())
|
|
Io_memory(drv->env().rm(), res.base(), device.io_mem(r));
|
|
*tagp = (Genode::addr_t) iom;
|
|
break;
|
|
}
|
|
case Platform::Device::Resource::INVALID:
|
|
{
|
|
Genode::error("PCI resource type invalid");
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
*handlep = res.base();
|
|
|
|
if (basep != 0)
|
|
*basep = res.base();
|
|
if (sizep != 0)
|
|
*sizep = maxsize > 0 && res.size() > maxsize ? maxsize : res.size();
|
|
|
|
/* enable bus master and I/O or memory bits */
|
|
uint16_t cmd = device.config_read(Pci_driver::CMD, Platform::Device::ACCESS_16BIT);
|
|
if (res.type() == Platform::Device::Resource::IO) {
|
|
cmd &= ~Pci_driver:: CMD_MEMORY;
|
|
cmd |= Pci_driver::CMD_IO;
|
|
} else {
|
|
cmd &= ~Pci_driver::CMD_IO;
|
|
cmd |= Pci_driver::CMD_MEMORY;
|
|
}
|
|
|
|
cmd |= Pci_driver::CMD_MASTER;
|
|
|
|
drv->pci().with_upgrade([&] () {
|
|
device.config_write(Pci_driver::CMD, cmd, Platform::Device::ACCESS_16BIT);
|
|
});
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/***************************
|
|
** machine/pci_machdep.h **
|
|
***************************/
|
|
|
|
extern "C" pcireg_t pci_conf_read(pci_chipset_tag_t pc, pcitag_t tag, int reg)
|
|
{
|
|
Pci_driver *drv = (Pci_driver *)pc;
|
|
Platform::Device_client device(drv->cap());
|
|
return device.config_read(reg, Platform::Device::ACCESS_32BIT);
|
|
}
|
|
|
|
|
|
extern "C" void pci_conf_write(pci_chipset_tag_t pc, pcitag_t tag, int reg,
|
|
pcireg_t val)
|
|
{
|
|
Pci_driver *drv = (Pci_driver *)pc;
|
|
Platform::Device_client device(drv->cap());
|
|
return device.config_write(reg, val, Platform::Device::ACCESS_32BIT);
|
|
}
|
|
|
|
|
|
/*******************
|
|
** machine/bus.h **
|
|
*******************/
|
|
|
|
extern "C" u_int8_t bus_space_read_1(bus_space_tag_t space,
|
|
bus_space_handle_t handle,
|
|
bus_size_t offset)
|
|
{
|
|
Bus_space *bus = (Bus_space*)space;
|
|
return bus->read_1(offset);
|
|
}
|
|
|
|
|
|
extern "C" u_int16_t bus_space_read_2(bus_space_tag_t space,
|
|
bus_space_handle_t handle,
|
|
bus_size_t offset)
|
|
{
|
|
Bus_space *bus = (Bus_space*)space;
|
|
return bus->read_2(offset);
|
|
}
|
|
|
|
|
|
extern "C" u_int32_t bus_space_read_4(bus_space_tag_t space,
|
|
bus_space_handle_t handle,
|
|
bus_size_t offset)
|
|
{
|
|
Bus_space *bus = (Bus_space*)space;
|
|
return bus->read_4(offset);
|
|
}
|
|
|
|
|
|
extern "C" void bus_space_write_1(bus_space_tag_t space,
|
|
bus_space_handle_t handle,
|
|
bus_size_t offset, u_int8_t value)
|
|
{
|
|
Bus_space *bus = (Bus_space*)space;
|
|
bus->write_1(offset, value);
|
|
}
|
|
|
|
|
|
extern "C" void bus_space_write_2(bus_space_tag_t space,
|
|
bus_space_handle_t handle,
|
|
bus_size_t offset, u_int16_t value)
|
|
{
|
|
Bus_space *bus = (Bus_space*)space;
|
|
bus->write_2(offset, value);
|
|
}
|
|
|
|
|
|
extern "C" void bus_space_write_4(bus_space_tag_t space,
|
|
bus_space_handle_t handle,
|
|
bus_size_t offset, u_int32_t value)
|
|
{
|
|
Bus_space *bus = (Bus_space*)space;
|
|
bus->write_4(offset, value);
|
|
}
|
|
|
|
|
|
extern "C" int bus_dmamap_create(bus_dma_tag_t tag, bus_size_t size, int nsegments,
|
|
bus_size_t maxsegsz, bus_size_t boundart,
|
|
int flags, bus_dmamap_t *dmamp)
|
|
{
|
|
struct bus_dmamap *map;
|
|
map = (struct bus_dmamap*) malloc(sizeof(struct bus_dmamap), M_DEVBUF, M_ZERO);
|
|
|
|
map->size = size;
|
|
map->maxsegsz = maxsegsz;
|
|
map->nsegments = nsegments;
|
|
|
|
*dmamp = map;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
extern "C" void bus_dmamap_destroy(bus_dma_tag_t tag, bus_dmamap_t map) {
|
|
free(map, 0, 0); }
|
|
|
|
|
|
extern "C" int bus_dmamap_load(bus_dma_tag_t tag, bus_dmamap_t dmam, void *buf,
|
|
bus_size_t buflen, struct proc *p, int flags)
|
|
{
|
|
Bsd::Bus_driver *drv = (Bsd::Bus_driver *)tag;
|
|
|
|
Genode::addr_t virt = (Genode::addr_t)buf;
|
|
dmam->dm_segs[0].ds_addr = drv->virt_to_phys(virt);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
extern "C" void bus_dmamap_unload(bus_dma_tag_t, bus_dmamap_t)
|
|
{
|
|
Genode::warning("not implemented, called from ",
|
|
__builtin_return_address(0));
|
|
}
|
|
|
|
|
|
extern "C" int bus_dmamem_alloc(bus_dma_tag_t tag, bus_size_t size, bus_size_t alignment,
|
|
bus_size_t boundary, bus_dma_segment_t *segs, int nsegs,
|
|
int *rsegs, int flags)
|
|
{
|
|
Bsd::Bus_driver *drv = (Bsd::Bus_driver *)tag;
|
|
|
|
Genode::addr_t virt = drv->alloc(size, Genode::log2(alignment));
|
|
if (virt == 0)
|
|
return -1;
|
|
|
|
segs->ds_addr = drv->virt_to_phys(virt);
|
|
segs->ds_size = size;
|
|
*rsegs = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
extern "C" void bus_dmamem_free(bus_dma_tag_t tag, bus_dma_segment_t *segs, int nsegs)
|
|
{
|
|
Bsd::Bus_driver *drv = (Bsd::Bus_driver *)tag;
|
|
|
|
for (int i = 0; i < nsegs; i++) {
|
|
Genode::addr_t phys = (Genode::addr_t)segs[i].ds_addr;
|
|
Genode::addr_t virt = drv->phys_to_virt(phys);
|
|
|
|
drv->free(virt, segs[i].ds_size);
|
|
}
|
|
}
|
|
|
|
|
|
extern "C" int bus_dmamem_map(bus_dma_tag_t tag, bus_dma_segment_t *segs, int nsegs,
|
|
size_t size, caddr_t *kvap, int flags)
|
|
{
|
|
if (nsegs > 1) {
|
|
Genode::error(__func__, ": cannot map more than 1 segment");
|
|
return -1;
|
|
}
|
|
|
|
Bsd::Bus_driver *drv = (Bsd::Bus_driver *)tag;
|
|
|
|
Genode::addr_t phys = (Genode::addr_t)segs[0].ds_addr;
|
|
Genode::addr_t virt = drv->phys_to_virt(phys);
|
|
|
|
*kvap = (caddr_t)virt;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
extern "C" void bus_dmamem_unmap(bus_dma_tag_t, caddr_t, size_t) { }
|
|
|
|
|
|
extern "C" paddr_t bus_dmamem_mmap(bus_dma_tag_t, bus_dma_segment_t *,
|
|
int, off_t, int, int)
|
|
{
|
|
Genode::warning("not implemented, called from ",
|
|
__builtin_return_address(0));
|
|
return 0;
|
|
}
|