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idc: access _ipc object through uncached memory region 

Changes accesses to the _ipc object to go through uncached
memory region. This way slave cores can safely read shared_ctx
without causing random overwrite of the data.

Signed-off-by: Tomasz Lauda <tomasz.lauda@linux.intel.com>
This commit is contained in:
Tomasz Lauda 2019-08-01 13:34:32 +02:00 committed by Liam Girdwood
parent 397c1a0d94
commit 7b564fcbd6
1 changed files with 7 additions and 4 deletions
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11
src/arch/xtensa/drivers/idc.c
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@ -14,6 +14,7 @@
#include <sof/lib/cache.h>
#include <sof/lib/clk.h>
#include <sof/lib/cpu.h>
#include <sof/lib/memory.h>
#include <sof/lib/notifier.h>
#include <sof/lib/shim.h>
#include <sof/platform.h>
@ -167,7 +168,8 @@ int arch_idc_send_msg(struct idc_msg *msg, uint32_t mode)
*/
static int idc_pipeline_trigger(uint32_t cmd)
{
struct sof_ipc_stream *data = _ipc->comp_data;
struct ipc *ipc = cache_to_uncache(_ipc);
struct sof_ipc_stream *data = ipc->comp_data;
struct ipc_comp_dev *pcm_dev;
int ret;
@ -175,7 +177,7 @@ static int idc_pipeline_trigger(uint32_t cmd)
dcache_invalidate_region(data, sizeof(*data));
/* check whether component exists */
pcm_dev = ipc_get_comp(_ipc, data->comp_id);
pcm_dev = ipc_get_comp(ipc, data->comp_id);
if (!pcm_dev)
return -ENODEV;
@ -210,7 +212,8 @@ static int idc_pipeline_trigger(uint32_t cmd)
*/
static int idc_component_command(uint32_t cmd)
{
struct sof_ipc_ctrl_data *data = _ipc->comp_data;
struct ipc *ipc = cache_to_uncache(_ipc);
struct sof_ipc_ctrl_data *data = ipc->comp_data;
struct ipc_comp_dev *comp_dev;
int ret;
@ -220,7 +223,7 @@ static int idc_component_command(uint32_t cmd)
data->rhdr.hdr.size - sizeof(*data));
/* check whether component exists */
comp_dev = ipc_get_comp(_ipc, data->comp_id);
comp_dev = ipc_get_comp(ipc, data->comp_id);
if (!comp_dev)
return -ENODEV;