Initial commit

Signed-off-by: Robert Baldyga <robert.baldyga@intel.com>
This commit is contained in:
Robert Baldyga
2018-11-29 15:14:21 +01:00
commit a8e1ce8cc5
178 changed files with 35378 additions and 0 deletions

383
src/utils/utils_io.c Normal file
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@@ -0,0 +1,383 @@
/*
* Copyright(c) 2012-2018 Intel Corporation
* SPDX-License-Identifier: BSD-3-Clause-Clear
*/
#include "ocf/ocf.h"
#include "../ocf_cache_priv.h"
#include "../ocf_data_obj_priv.h"
#include "../ocf_request.h"
#include "utils_io.h"
#include "utils_cache_line.h"
struct ocf_submit_io_wait_context {
env_completion complete;
int error;
env_atomic rq_remaining;
};
/*
* IO discard context
*/
struct discard_io_request {
void *context;
env_atomic req_remaining;
env_completion completion;
int error;
};
void ocf_submit_obj_flush(ocf_data_obj_t obj, ocf_end_t callback, void *ctx)
{
struct ocf_io *io;
io = ocf_dobj_new_io(obj);
if (!io) {
callback(ctx, -ENOMEM);
return;
}
ocf_io_configure(io, 0, 0, OCF_WRITE, 0, 0);
ocf_io_set_default_cmpl(io, ctx, callback);
ocf_dobj_submit_flush(io);
}
static void _ocf_obj_flush_end(void *_cntx, int err)
{
struct ocf_submit_io_wait_context *cntx = _cntx;
cntx->error = err;
env_completion_complete(&cntx->complete);
}
int ocf_submit_obj_flush_wait(ocf_data_obj_t obj)
{
struct ocf_submit_io_wait_context cntx = { };
env_atomic_set(&cntx.rq_remaining, 1);
env_completion_init(&cntx.complete);
ocf_submit_obj_flush(obj, _ocf_obj_flush_end, &cntx);
env_completion_wait(&cntx.complete);
return cntx.error;
}
static void ocf_submit_obj_discard_wait_io(struct ocf_io *io, int error)
{
struct ocf_submit_io_wait_context *cntx = io->priv1;
if (error)
cntx->error = error;
ocf_io_put(io); /* Release IO */
if (env_atomic_dec_return(&cntx->rq_remaining))
return;
/* All discard IO handled, signal it by setting completion */
env_completion_complete(&cntx->complete);
}
int ocf_submit_obj_discard_wait(ocf_data_obj_t obj, uint64_t addr,
uint64_t length)
{
struct ocf_submit_io_wait_context cntx = { };
uint32_t bytes;
uint32_t max_length = ~0;
ENV_BUG_ON(env_memset(&cntx, sizeof(cntx), 0));
env_atomic_set(&cntx.rq_remaining, 1);
env_completion_init(&cntx.complete);
while (length) {
struct ocf_io *io = ocf_dobj_new_io(obj);
if (!io) {
cntx.error = -ENOMEM;
break;
}
if (length > max_length)
bytes = max_length;
else
bytes = length;
env_atomic_inc(&cntx.rq_remaining);
ocf_io_configure(io, addr, bytes, OCF_WRITE, 0, 0);
ocf_io_set_cmpl(io, &cntx, NULL,
ocf_submit_obj_discard_wait_io);
ocf_dobj_submit_discard(io);
addr += bytes;
length -= bytes;
}
if (env_atomic_dec_return(&cntx.rq_remaining) == 0)
env_completion_complete(&cntx.complete);
env_completion_wait(&cntx.complete);
return cntx.error;
}
static void ocf_submit_obj_zeroes_wait_io(struct ocf_io *io, int error)
{
struct ocf_submit_io_wait_context *cntx = io->priv1;
if (error)
cntx->error = error;
env_completion_complete(&cntx->complete);
}
int ocf_submit_write_zeroes_wait(ocf_data_obj_t obj, uint64_t addr,
uint64_t length)
{
struct ocf_submit_io_wait_context cntx = { };
uint32_t bytes;
uint32_t max_length = ~((uint32_t)PAGE_SIZE - 1);
uint32_t step = 0;
struct ocf_io *io;
io = ocf_dobj_new_io(obj);
if (!io)
return -ENOMEM;
while (length) {
env_completion_init(&cntx.complete);
bytes = MIN(length, max_length);
ocf_io_configure(io, addr, bytes, OCF_WRITE, 0, 0);
ocf_io_set_cmpl(io, &cntx, NULL,
ocf_submit_obj_zeroes_wait_io);
ocf_dobj_submit_write_zeroes(io);
addr += bytes;
length -= bytes;
env_completion_wait(&cntx.complete);
if (cntx.error)
break;
OCF_COND_RESCHED_DEFAULT(step);
}
ocf_io_put(io);
return cntx.error;
}
int ocf_submit_cache_page(struct ocf_cache *cache, uint64_t addr,
int dir, void *buffer)
{
ctx_data_t *data;
struct ocf_io *io;
int result = 0;
/* Allocate resources for IO */
io = ocf_dobj_new_io(&cache->device->obj);
data = ctx_data_alloc(cache->owner, 1);
if (!io || !data) {
result = -ENOMEM;
goto end;
}
if (dir == OCF_WRITE)
ctx_data_wr_check(cache->owner, data, buffer, PAGE_SIZE);
result = ocf_io_set_data(io, data, 0);
if (result)
goto end;
ocf_io_configure(io, addr, PAGE_SIZE, dir, 0, 0);
result = ocf_submit_io_wait(io);
if (result)
goto end;
if (dir == OCF_READ)
ctx_data_rd_check(cache->owner, buffer, data, PAGE_SIZE);
end:
if (io)
ocf_io_put(io);
ctx_data_free(cache->owner, data);
return result;
}
void ocf_submit_obj_discard(ocf_data_obj_t obj, struct ocf_request *req,
ocf_end_t callback, void *ctx)
{
struct ocf_io *io = ocf_dobj_new_io(obj);
if (!io) {
callback(ctx, -ENOMEM);
return;
}
ocf_io_configure(io, SECTORS_TO_BYTES(req->discard.sector),
SECTORS_TO_BYTES(req->discard.nr_sects),
OCF_WRITE, 0, 0);
ocf_io_set_default_cmpl(io, ctx, callback);
ocf_io_set_data(io, req->data, 0);
ocf_dobj_submit_discard(io);
}
void ocf_submit_cache_reqs(struct ocf_cache *cache,
struct ocf_map_info *map_info, struct ocf_request *req, int dir,
unsigned int reqs, ocf_end_t callback, void *ctx)
{
struct ocf_counters_block *cache_stats;
uint64_t flags = req->io ? req->io->flags : 0;
uint32_t class = req->io ? req->io->class : 0;
uint64_t addr, bytes, total_bytes = 0;
struct ocf_io *io;
uint32_t i;
int err;
cache_stats = &cache->core_obj[req->core_id].
counters->cache_blocks;
if (reqs == 1) {
io = ocf_new_cache_io(cache);
if (!io) {
callback(ctx, -ENOMEM);
goto update_stats;
}
addr = ocf_metadata_map_lg2phy(cache,
map_info[0].coll_idx);
addr *= ocf_line_size(cache);
addr += cache->device->metadata_offset;
addr += (req->byte_position % ocf_line_size(cache));
bytes = req->byte_length;
ocf_io_configure(io, addr, bytes, dir, class, flags);
ocf_io_set_default_cmpl(io, ctx, callback);
err = ocf_io_set_data(io, req->data, 0);
if (err) {
ocf_io_put(io);
callback(ctx, err);
goto update_stats;
}
ocf_dobj_submit_io(io);
total_bytes = req->byte_length;
goto update_stats;
}
/* Issue requests to cache. */
for (i = 0; i < reqs; i++) {
io = ocf_new_cache_io(cache);
if (!io) {
/* Finish all IOs which left with ERROR */
for (; i < reqs; i++)
callback(ctx, -ENOMEM);
goto update_stats;
}
addr = ocf_metadata_map_lg2phy(cache,
map_info[i].coll_idx);
addr *= ocf_line_size(cache);
addr += cache->device->metadata_offset;
bytes = ocf_line_size(cache);
if (i == 0) {
uint64_t seek = (req->byte_position %
ocf_line_size(cache));
addr += seek;
bytes -= seek;
} else if (i == (reqs - 1)) {
uint64_t skip = (ocf_line_size(cache) -
((req->byte_position + req->byte_length) %
ocf_line_size(cache))) % ocf_line_size(cache);
bytes -= skip;
}
ocf_io_configure(io, addr, bytes, dir, class, flags);
ocf_io_set_default_cmpl(io, ctx, callback);
err = ocf_io_set_data(io, req->data, total_bytes);
if (err) {
ocf_io_put(io);
/* Finish all IOs which left with ERROR */
for (; i < reqs; i++)
callback(ctx, err);
goto update_stats;
}
ocf_dobj_submit_io(io);
total_bytes += bytes;
}
update_stats:
if (dir == OCF_WRITE)
env_atomic64_add(total_bytes, &cache_stats->write_bytes);
else if (dir == OCF_READ)
env_atomic64_add(total_bytes, &cache_stats->read_bytes);
}
void ocf_submit_obj_req(ocf_data_obj_t obj, struct ocf_request *rq,
int dir, ocf_end_t callback, void *ctx)
{
struct ocf_cache *cache = rq->cache;
struct ocf_counters_block *core_stats;
uint64_t flags = rq->io ? rq->io->flags : 0;
uint32_t class = rq->io ? rq->io->class : 0;
struct ocf_io *io;
int err;
core_stats = &cache->core_obj[rq->core_id].
counters->core_blocks;
if (dir == OCF_WRITE)
env_atomic64_add(rq->byte_length, &core_stats->write_bytes);
else if (dir == OCF_READ)
env_atomic64_add(rq->byte_length, &core_stats->read_bytes);
io = ocf_dobj_new_io(obj);
if (!io) {
callback(ctx, -ENOMEM);
return;
}
ocf_io_configure(io, rq->byte_position, rq->byte_length, dir,
class, flags);
ocf_io_set_default_cmpl(io, ctx, callback);
err = ocf_io_set_data(io, rq->data, 0);
if (err) {
ocf_io_put(io);
callback(ctx, err);
return;
}
ocf_dobj_submit_io(io);
}
static void ocf_submit_io_wait_end(struct ocf_io *io, int error)
{
struct ocf_submit_io_wait_context *context = io->priv1;
context->error |= error;
env_completion_complete(&context->complete);
}
int ocf_submit_io_wait(struct ocf_io *io)
{
struct ocf_submit_io_wait_context context;
ENV_BUG_ON(env_memset(&context, sizeof(context), 0));
env_completion_init(&context.complete);
context.error = 0;
ocf_io_set_cmpl(io, &context, NULL, ocf_submit_io_wait_end);
ocf_dobj_submit_io(io);
env_completion_wait(&context.complete);
return context.error;
}