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block: let generic driver API work asynchronously

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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
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35
gems/src/server/http_blk/main.cc
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@ -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); }