ExternalVendorCode/genode
1
0
Fork 0
mirror of https://github.com/genodelabs/genode.git synced 2025-03-22 20:15:20 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

block: let generic driver API work asynchronously

Browse Source 
Fix #990
This commit is contained in:
Stefan Kalkowski 2013-12-03 15:41:14 +01:00 committed by Norman Feske
parent 9c698ab6c1
commit c3c643bcf1
16 changed files with 289 additions and 311 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
gems/src/server/http_blk/main.cc
View File

@ -39,9 +39,8 @@ class Driver : public Block::Driver
** Block::Driver interface **
*******************************/
Genode::size_t block_size() { return _block_size; }
Genode::size_t block_count() {
return _http.file_size() / _block_size; }
Genode::size_t block_size() { return _block_size; }
Genode::size_t block_count() { return _http.file_size() / _block_size; }
Block::Session::Operations ops()
{
@ -50,25 +49,15 @@ class Driver : public Block::Driver
return o;
}
void read(Genode::size_t block_nr,
Genode::size_t block_count,
char *buffer) {
void read(Genode::size_t block_nr,
Genode::size_t block_count,
char *buffer,
Block::Packet_descriptor &packet)
{
_http.cmd_get(block_nr * _block_size, block_count * _block_size,
(addr_t)buffer); }
void write(Genode::size_t, Genode::size_t, char const*) {
throw Io_error(); }
void read_dma(Genode::size_t, Genode::size_t, Genode::addr_t) {
throw Io_error(); }
void write_dma(Genode::size_t, Genode::size_t, Genode::addr_t) {
throw Io_error(); }
bool dma_enabled() { return false; }
Genode::Ram_dataspace_capability alloc_dma_buffer(Genode::size_t size) {
return Genode::env()->ram_session()->alloc(size, false); }
void sync() {}
(addr_t)buffer);
session->complete_packet(packet);
}
};
@ -92,8 +81,8 @@ class Factory : public Block::Driver_factory
PINF("Using file=%s as device with block size %zx.", _uri, _blk_sz);
}
Block::Driver *create() {
return new (env()->heap()) Driver(_blk_sz, _uri); }
Block::Driver *create() {
return new (env()->heap()) Driver(_blk_sz, _uri); }
void destroy(Block::Driver *driver) {
Genode::destroy(env()->heap(), driver); }

43
os/include/block/component.h
View File

@ -30,6 +30,21 @@ namespace Block {
class Block::Session_component : public Block::Session_rpc_object
{
public:
void complete_packet(Packet_descriptor &packet, bool success = true)
{
packet.succeeded(success);
/* acknowledge packet to the client */
if (!tx_sink()->ready_to_ack()) {
PWRN("need to wait until ready-for-ack");
return;
}
tx_sink()->acknowledge_packet(packet);
}
private:
Driver_factory &_driver_factory;
@ -60,40 +75,34 @@ class Block::Session_component : public Block::Session_rpc_object
if (_driver.dma_enabled())
_driver.read_dma(packet.block_number(),
packet.block_count(),
_rq_phys + packet.offset());
_rq_phys + packet.offset(),
packet);
else
_driver.read(packet.block_number(),
packet.block_count(),
tx_sink()->packet_content(packet));
tx_sink()->packet_content(packet),
packet);
break;
case Block::Packet_descriptor::WRITE:
if (_driver.dma_enabled())
_driver.write_dma(packet.block_number(),
packet.block_count(),
_rq_phys + packet.offset());
_rq_phys + packet.offset(),
packet);
else
_driver.write(packet.block_number(),
packet.block_count(),
tx_sink()->packet_content(packet));
tx_sink()->packet_content(packet),
packet);
break;
default:
PWRN("received invalid packet");
packet.succeeded(false);
continue;
throw Driver::Io_error();
}
} catch (Driver::Io_error) {
packet.succeeded(false);
complete_packet(packet, false);
}
/* acknowledge packet to the client */
if (!tx_sink()->ready_to_ack()) {
PWRN("need to wait until ready-for-ack");
return;
}
tx_sink()->acknowledge_packet(packet);
}
}
@ -121,6 +130,8 @@ class Block::Session_component : public Block::Session_rpc_object
{
_tx.sigh_ready_to_ack(_sink_ack);
_tx.sigh_packet_avail(_sink_submit);
driver.session = this;
}
/**

214
os/include/block/driver.h
View File

@ -2,6 +2,7 @@
* \brief Block-driver interface
* \author Christian Helmuth
* \author Sebastian Sumpf
* \author Stefan kalkowski
* \date 2011-05-23
*/
@ -17,115 +18,132 @@
#include <base/exception.h>
#include <base/stdint.h>
#include <base/signal.h>
#include <ram_session/ram_session.h>
#include <block_session/block_session.h>
namespace Block {
class Session_component;
struct Driver;
struct Driver_factory;
};
/**
* Interface to be implemented by the device-specific driver code
*/
struct Block::Driver
{
Session_component *session;
/**
* Interface to be implemented by the device-specific driver code
* Exceptions
*/
struct Driver
{
/**
* Exceptions
*/
class Io_error : public ::Genode::Exception { };
/**
* Request block size for driver and medium
*/
virtual Genode::size_t block_size() = 0;
/**
* Request capacity of medium in blocks
*/
virtual Genode::size_t block_count() = 0;
/**
* Request operations supported by the device
*/
virtual Session::Operations ops() = 0;
/**
* Read from medium
*
* \param block_number number of first block to read
* \param block_count number of blocks to read
* \param out_buffer output buffer for read request
*/
virtual void read(Genode::size_t block_number,
Genode::size_t block_count,
char *out_buffer) = 0;
/**
* Write to medium
*
* \param block_number number of first block to write
* \param block_count number of blocks to write
* \param buffer buffer for write request
*/
virtual void write(Genode::size_t block_number,
Genode::size_t block_count,
char const *buffer) = 0;
/**
* Read from medium using DMA
*
* \param block_number number of first block to read
* \param block_count number of blocks to read
* \param phys phyiscal address of read buffer
*/
virtual void read_dma(Genode::size_t block_number,
Genode::size_t block_count,
Genode::addr_t phys) = 0;
/**
* Write to medium using DMA
*
* \param block_number number of first block to write
* \param block_count number of blocks to write
* \param phys physical address of write buffer
*/
virtual void write_dma(Genode::size_t block_number,
Genode::size_t block_count,
Genode::addr_t phys) = 0;
/**
* Check if DMA is enabled for driver
*
* \return true if DMA is enabled, false otherwise
*/
virtual bool dma_enabled() = 0;
/**
* Allocate buffer which is suitable for DMA.
*/
virtual Genode::Ram_dataspace_capability alloc_dma_buffer(Genode::size_t) = 0;
/**
* Synchronize with with device.
*/
virtual void sync() = 0;
};
class Io_error : public ::Genode::Exception { };
/**
* Interface for constructing the driver object
* Request block size for driver and medium
*/
struct Driver_factory
{
/**
* Construct new driver
*/
virtual Driver *create() = 0;
virtual Genode::size_t block_size() = 0;
/**
* Destroy driver
*/
virtual void destroy(Driver *driver) = 0;
};
}
/**
* Request capacity of medium in blocks
*/
virtual Genode::size_t block_count() = 0;
/**
* Request operations supported by the device
*/
virtual Session::Operations ops() = 0;
/**
* Read from medium
*
* \param block_number number of first block to read
* \param block_count number of blocks to read
* \param buffer output buffer for read request
*/
virtual void read(Genode::size_t block_number,
Genode::size_t block_count,
char * buffer,
Packet_descriptor &packet) {
throw Io_error(); }
/**
* Write to medium
*
* \param block_number number of first block to write
* \param block_count number of blocks to write
* \param buffer buffer for write request
*/
virtual void write(Genode::size_t block_number,
Genode::size_t block_count,
const char * buffer,
Packet_descriptor &packet) {
throw Io_error(); }
/**
* Read from medium using DMA
*
* \param block_number number of first block to read
* \param block_count number of blocks to read
* \param phys phyiscal address of read buffer
*/
virtual void read_dma(Genode::size_t block_number,
Genode::size_t block_count,
Genode::addr_t phys,
Packet_descriptor &packet) {
throw Io_error(); }
/**
* Write to medium using DMA
*
* \param block_number number of first block to write
* \param block_count number of blocks to write
* \param phys physical address of write buffer
*/
virtual void write_dma(Genode::size_t block_number,
Genode::size_t block_count,
Genode::addr_t phys,
Packet_descriptor &packet) {
throw Io_error(); }
/**
* Check if DMA is enabled for driver
*
* \return true if DMA is enabled, false otherwise
*/
virtual bool dma_enabled() { return false; }
/**
* Allocate buffer which is suitable for DMA.
*/
virtual Genode::Ram_dataspace_capability
alloc_dma_buffer(Genode::size_t size) {
return Genode::env()->ram_session()->alloc(size, false); }
/**
* Synchronize with with device.
*/
virtual void sync() {}
};
/**
* Interface for constructing the driver object
*/
struct Block::Driver_factory
{
/**
* Construct new driver
*/
virtual Driver *create() = 0;
/**
* Destroy driver
*/
virtual void destroy(Driver *driver) = 0;
};
#endif /* _BLOCK__DRIVER_H_ */

16
os/src/drivers/ahci/exynos5/ahci_driver.cc
View File

@ -1949,19 +1949,3 @@ int Ahci_driver::_ncq_command(uint64_t lba, unsigned cnt, addr_t phys, bool w)
size_t Ahci_driver::block_count() { return sata_ahci()->block_cnt; }
size_t Ahci_driver::block_size() { return Sata_ahci::BLOCK_SIZE; }
Ram_dataspace_capability Ahci_driver::alloc_dma_buffer(size_t size) {
return env()->ram_session()->alloc(size, 0); }
void Ahci_driver::read(size_t, size_t, char *)
{
PERR("Not implemented");
throw Io_error();
}
void Ahci_driver::write(size_t, size_t, char const *)
{
PERR("Not implemented");
throw Io_error();
}

26
os/src/drivers/ahci/exynos5/ahci_driver.h
View File

@ -15,7 +15,7 @@
#define _AHCI_DRIVER_H_
/* Genode includes */
#include <block/driver.h>
#include <block/component.h>
#include <ram_session/ram_session.h>
/**
@ -29,7 +29,6 @@ class Ahci_driver : public Block::Driver
typedef Genode::size_t size_t;
typedef Genode::uint64_t uint64_t;
typedef Genode::addr_t addr_t;
typedef Genode::Ram_dataspace_capability Ram_dataspace_capability;
int _ncq_command(uint64_t lba, unsigned cnt, addr_t phys, bool w);
@ -40,28 +39,37 @@ class Ahci_driver : public Block::Driver
*/
Ahci_driver();
/*****************************
** Block::Driver interface **
*****************************/
Block::Session::Operations ops()
{
Block::Session::Operations o;
o.set_operation(Block::Packet_descriptor::READ);
o.set_operation(Block::Packet_descriptor::WRITE);
return o;
}
size_t block_size();
size_t block_count();
bool dma_enabled() { return 1; }
void write(size_t, size_t, char const *);
void read(size_t, size_t, char *);
bool dma_enabled() { return true; }
Ram_dataspace_capability alloc_dma_buffer(size_t size);
void read_dma(size_t block_nr, size_t block_cnt, addr_t phys)
void read_dma(size_t block_nr, size_t block_cnt, addr_t phys,
Block::Packet_descriptor &packet)
{
if (_ncq_command(block_nr, block_cnt, phys, 0))
throw Io_error();
session->complete_packet(packet);
}
void write_dma(size_t block_nr, size_t block_cnt, addr_t phys)
void write_dma(size_t block_nr, size_t block_cnt, addr_t phys,
Block::Packet_descriptor &packet)
{
if (_ncq_command(block_nr, block_cnt, phys, 1))
throw Io_error();
session->complete_packet(packet);
}
};

10
os/src/drivers/ahci/exynos5/bench/main.cc
View File

@ -151,10 +151,11 @@ int main(int argc, char **argv)
void operator () (Block::Driver &driver,
addr_t number, size_t count, addr_t phys, char *virt)
{
Block::Packet_descriptor packet;
if (driver.dma_enabled())
driver.read_dma(number, count, phys);
driver.read_dma(number, count, phys, packet);
else
driver.read(number, count, virt);
driver.read(number, count, virt, packet);
}
} read_operation;
@ -178,10 +179,11 @@ int main(int argc, char **argv)
void operator () (Block::Driver &driver,
addr_t number, size_t count, addr_t phys, char *virt)
{
Block::Packet_descriptor packet;
if (driver.dma_enabled())
driver.write_dma(number, count, phys);
driver.write_dma(number, count, phys, packet);
else
driver.write(number, count, virt);
driver.write(number, count, virt, packet);
}
} write_operation;

27
os/src/drivers/ahci/include/ahci_driver_base.h
View File

@ -34,7 +34,8 @@ class Ahci_driver_base : public Block::Driver
throw Io_error();
}
Ahci_driver_base(Ahci_device * const device) : _device(device) { }
Ahci_driver_base(Ahci_device * const device)
: _device(device) { }
public:
@ -55,40 +56,30 @@ class Ahci_driver_base : public Block::Driver
return o;
}
bool dma_enabled() { return true; }
bool dma_enabled() { return true; }
void read_dma(size_t block_number,
size_t block_count,
addr_t phys)
addr_t phys,
Block::Packet_descriptor &packet)
{
_sanity_check(block_number, block_count);
_device->read(block_number, block_count, phys);
if (session) session->complete_packet(packet);
}
void write_dma(size_t block_number,
size_t block_count,
addr_t phys)
addr_t phys,
Block::Packet_descriptor &packet)
{
_sanity_check(block_number, block_count);
_device->write(block_number, block_count, phys);
}
void read(size_t, size_t, char *)
{
PERR("%s should not be called", __PRETTY_FUNCTION__);
throw Io_error();
}
void write(size_t, size_t, char const *)
{
PERR("%s should not be called", __PRETTY_FUNCTION__);
throw Io_error();
if (session) session->complete_packet(packet);
}
Ram_dataspace_capability alloc_dma_buffer(size_t size) {
return _device->alloc_dma_buffer(size); }
void sync() {}
};
#endif /* _AHCI_DRIVER_BASE_H_ */

42
os/src/drivers/atapi/ata_device.h
View File

@ -16,7 +16,7 @@
#include <base/exception.h>
#include <base/stdint.h>
#include <block/driver.h>
#include <block/component.h>
namespace Genode {
class Io_port_session;
@ -120,27 +120,41 @@ namespace Ata {
void read(Genode::size_t block_number,
Genode::size_t block_count,
char *buffer) {
_read(block_number, block_count, buffer, false); }
char *buffer,
Block::Packet_descriptor &packet)
{
_read(block_number, block_count, buffer, false);
session->complete_packet(packet);
}
void write(Genode::size_t block_number,
Genode::size_t block_count,
char const *buffer) {
_write(block_number, block_count, buffer, false); }
char const *buffer,
Block::Packet_descriptor &packet)
{
_write(block_number, block_count, buffer, false);
session->complete_packet(packet);
}
void read_dma(Genode::size_t block_number,
Genode::size_t block_count,
Genode::addr_t phys) {
_read(block_number, block_count, (char*)phys, true); }
Genode::addr_t phys,
Block::Packet_descriptor &packet)
{
_read(block_number, block_count, (char*)phys, true);
session->complete_packet(packet);
}
void write_dma(Genode::size_t block_number,
Genode::size_t block_count,
Genode::addr_t phys) {
_write(block_number, block_count, (char*)phys, true); }
Genode::addr_t phys,
Block::Packet_descriptor &packet)
{
_write(block_number, block_count, (char*)phys, true);
session->complete_packet(packet);
}
bool dma_enabled() { return _dma; }
Genode::Ram_dataspace_capability alloc_dma_buffer(Genode::size_t size) {
return Genode::env()->ram_session()->alloc(size, false); }
void sync() {}
};

3
os/src/drivers/atapi/atapi_device.cc
View File

@ -36,8 +36,7 @@ enum Commands {
Atapi_device::Atapi_device(unsigned base_cmd, unsigned base_ctrl)
: Device(base_cmd, base_ctrl)
{ }
: Device(base_cmd, base_ctrl) { }
int Atapi_device::read_sense(unsigned char *sense, int length)

1
os/src/drivers/atapi/main.cc
View File

@ -16,7 +16,6 @@
#include <base/thread.h>
#include <cap_session/connection.h>
#include <os/config.h>
#include <block/component.h>
/* local includes */
#include "ata_device.h"

37
os/src/drivers/sd_card/exynos5/driver.h
View File

@ -97,44 +97,47 @@ class Block::Exynos5_driver : public Block::Driver
return o;
}
void read(Genode::size_t block_number,
Genode::size_t block_count,
char *out_buffer)
void read(Genode::size_t block_number,
Genode::size_t block_count,
char *out_buffer,
Packet_descriptor &packet)
{
if (!_controller.read_blocks(block_number, block_count, out_buffer))
throw Io_error();
session->complete_packet(packet);
}
void write(Genode::size_t block_number,
Genode::size_t block_count,
char const *buffer)
void write(Genode::size_t block_number,
Genode::size_t block_count,
char const *buffer,
Packet_descriptor &packet)
{
if (!_controller.write_blocks(block_number, block_count, buffer))
throw Io_error();
session->complete_packet(packet);
}
void read_dma(Genode::size_t block_number,
Genode::size_t block_count,
Genode::addr_t phys)
void read_dma(Genode::size_t block_number,
Genode::size_t block_count,
Genode::addr_t phys,
Packet_descriptor &packet)
{
if (!_controller.read_blocks_dma(block_number, block_count, phys))
throw Io_error();
session->complete_packet(packet);
}
void write_dma(Genode::size_t block_number,
Genode::size_t block_count,
Genode::addr_t phys)
void write_dma(Genode::size_t block_number,
Genode::size_t block_count,
Genode::addr_t phys,
Packet_descriptor &packet)
{
if (!_controller.write_blocks_dma(block_number, block_count, phys))
throw Io_error();
session->complete_packet(packet);
}
bool dma_enabled() { return _use_dma; }
Ram_dataspace_capability alloc_dma_buffer(size_t size) {
return Genode::env()->ram_session()->alloc(size, false); }
void sync() {}
};
#endif /* _DRIVER_H_ */

10
os/src/drivers/sd_card/omap4/bench/main.cc
View File

@ -111,10 +111,11 @@ int main(int argc, char **argv)
void operator () (Block::Driver &driver,
addr_t number, size_t count, addr_t phys, char *virt)
{
Block::Packet_descriptor p;
if (driver.dma_enabled())
driver.read_dma(number, count, phys);
driver.read_dma(number, count, phys, p);
else
driver.read(number, count, virt);
driver.read(number, count, virt, p);
}
} read_operation;
@ -137,10 +138,11 @@ int main(int argc, char **argv)
void operator () (Block::Driver &driver,
addr_t number, size_t count, addr_t phys, char *virt)
{
Block::Packet_descriptor p;
if (driver.dma_enabled())
driver.write_dma(number, count, phys);
driver.write_dma(number, count, phys, p);
else
driver.write(number, count, virt);
driver.write(number, count, virt, p);
}
} write_operation;

37
os/src/drivers/sd_card/omap4/driver.h
View File

@ -90,44 +90,47 @@ class Block::Omap4_driver : public Block::Driver
return o;
}
void read(Genode::size_t block_number,
Genode::size_t block_count,
char *out_buffer)
void read(Genode::size_t block_number,
Genode::size_t block_count,
char *out_buffer,
Packet_descriptor &packet)
{
if (!_controller.read_blocks(block_number, block_count, out_buffer))
throw Io_error();
session->complete_packet(packet);
}
void write(Genode::size_t block_number,
Genode::size_t block_count,
char const *buffer)
void write(Genode::size_t block_number,
Genode::size_t block_count,
char const *buffer,
Packet_descriptor &packet)
{
if (!_controller.write_blocks(block_number, block_count, buffer))
throw Io_error();
session->complete_packet(packet);
}
void read_dma(Genode::size_t block_number,
Genode::size_t block_count,
Genode::addr_t phys)
void read_dma(Genode::size_t block_number,
Genode::size_t block_count,
Genode::addr_t phys,
Packet_descriptor &packet)
{
if (!_controller.read_blocks_dma(block_number, block_count, phys))
throw Io_error();
session->complete_packet(packet);
}
void write_dma(Genode::size_t block_number,
Genode::size_t block_count,
Genode::addr_t phys)
void write_dma(Genode::size_t block_number,
Genode::size_t block_count,
Genode::addr_t phys,
Packet_descriptor &packet)
{
if (!_controller.write_blocks_dma(block_number, block_count, phys))
throw Io_error();
session->complete_packet(packet);
}
bool dma_enabled() { return _use_dma; }
Ram_dataspace_capability alloc_dma_buffer(size_t size) {
return Genode::env()->ram_session()->alloc(size, false); }
void sync() {}
};
#endif /* _DRIVER_H_ */

30
os/src/drivers/sd_card/pl180/sd_card.h
View File

@ -29,7 +29,8 @@ class Sd_card : public Block::Driver
public:
Sd_card(Host_driver &host_driver) : _hd(host_driver)
Sd_card(Host_driver &host_driver)
: _hd(host_driver)
{
unsigned resp;
@ -89,7 +90,8 @@ class Sd_card : public Block::Driver
void read(Genode::size_t block_number,
Genode::size_t block_count,
char *out_buffer)
char *out_buffer,
Block::Packet_descriptor &packet)
{
unsigned resp;
unsigned length = BLOCK_SIZE;
@ -105,11 +107,13 @@ class Sd_card : public Block::Driver
length, &resp);
_hd.read_data(length, out_buffer + (i * BLOCK_SIZE));
}
session->complete_packet(packet);
}
void write(Genode::size_t block_number,
Genode::size_t block_count,
char const *buffer)
char const *buffer,
Block::Packet_descriptor &packet)
{
unsigned resp;
unsigned length = BLOCK_SIZE;
@ -125,26 +129,8 @@ class Sd_card : public Block::Driver
length, &resp);
_hd.write_data(length, buffer + (i * BLOCK_SIZE));
}
session->complete_packet(packet);
}
/*
* This driver does not support DMA operation, currently.
*/
void read_dma(Genode::size_t, Genode::size_t, Genode::addr_t) {
throw Io_error(); }
void write_dma(Genode::size_t, Genode::size_t, Genode::addr_t) {
throw Io_error(); }
bool dma_enabled() { return false; }
Genode::Ram_dataspace_capability alloc_dma_buffer(Genode::size_t size)
{
return Genode::env()->ram_session()->alloc(size, false);
}
void sync() {}
};
#endif /* _SD_CARD_H_ */

38
os/src/server/rom_blk/main.cc
View File

@ -57,9 +57,10 @@ class Rom_blk : public Block::Driver
return o;
}
void read(Genode::size_t block_number,
Genode::size_t block_count,
char *out_buffer)
void read(Genode::size_t block_number,
Genode::size_t block_count,
char* buffer,
Block::Packet_descriptor &packet)
{
/* sanity check block number */
if ((block_number + block_count > _file_sz / _blk_sz)
@ -73,32 +74,10 @@ class Rom_blk : public Block::Driver
size_t size = block_count * _blk_sz;
/* copy file content to packet payload */
memcpy(out_buffer, (void*)(_file_addr + offset), size);
memcpy((void*)buffer, (void*)(_file_addr + offset), size);
session->complete_packet(packet);
}
void write(Genode::size_t block_number,
Genode::size_t block_count,
char const *buffer)
{
PWRN("write attempt on read-only device");
}
/*
* This driver does not support DMA operation, currently.
*/
void read_dma(Genode::size_t, Genode::size_t, Genode::addr_t) {
throw Io_error(); }
void write_dma(Genode::size_t, Genode::size_t, Genode::addr_t) {
throw Io_error(); }
bool dma_enabled() { return false; }
Genode::Ram_dataspace_capability alloc_dma_buffer(Genode::size_t size) {
return Genode::env()->ram_session()->alloc(size, false); }
void sync() {}
};
@ -118,8 +97,7 @@ struct Factory : Block::Driver_factory
PINF("Using file=%s as device with block size %zx.", file, blk_sz);
try {
Rom_blk *driver = new (Genode::env()->heap()) Rom_blk(file, blk_sz);
return driver;
return new (Genode::env()->heap()) Rom_blk(file, blk_sz);
} catch(Rom_connection::Rom_connection_failed) {
PERR("Cannot open file %s.", file);
}

31
os/src/test/fb_block_adapter/main.cc
View File

@ -58,9 +58,10 @@ class Driver : public Block::Driver
return ops;
}
void read(Genode::size_t block_number,
Genode::size_t block_count,
char *buffer)
void read(Genode::size_t block_number,
Genode::size_t block_count,
char *buffer,
Block::Packet_descriptor &packet)
{
/* sanity check block number */
if (block_number + block_count > _fb_size / BLOCK_SIZE) {
@ -73,11 +74,13 @@ class Driver : public Block::Driver
Genode::size_t size = block_count * BLOCK_SIZE;
Genode::memcpy((void*)buffer, (void*)(_fb_addr + offset), size);
session->complete_packet(packet);
}
void write(Genode::size_t block_number,
Genode::size_t block_count,
char const *buffer)
void write(Genode::size_t block_number,
Genode::size_t block_count,
char const *buffer,
Block::Packet_descriptor &packet)
{
/* sanity check block number */
if (block_number + block_count > _fb_size / BLOCK_SIZE) {
@ -91,26 +94,14 @@ class Driver : public Block::Driver
Genode::memcpy((void*)(_fb_addr + offset), (void*)buffer, size);
_fb.refresh(0, 0, _fb_mode.width(), _fb_mode.height());
session->complete_packet(packet);
}
void read_dma(Genode::size_t block_number,
Genode::size_t block_count,
Genode::addr_t phys) {
throw Io_error(); }
void write_dma(Genode::size_t block_number,
Genode::size_t block_count,
Genode::addr_t phys) {
throw Io_error(); }
bool dma_enabled() { return false; }
Genode::Ram_dataspace_capability alloc_dma_buffer(Genode::size_t size) {
return Genode::env()->ram_session()->alloc(size, false); }
void sync() {}
};
struct Factory : Block::Driver_factory
{
Block::Driver *create() {
Block::Driver *create() {
return new (Genode::env()->heap()) Driver(); }
void destroy(Block::Driver *driver) {