From: Felipe Contreras <felipe.contreras@xxxxxxxxx>
This reverts commit db348ca36e5881cd1d2e5caa6eee7d0237d07a3d.
Signed-off-by: Felipe Contreras <felipe.contreras@xxxxxxxxx>
Signed-off-by: Omar Ramirez Luna <omar.ramirez@xxxxxx>
---
.../staging/tidspbridge/include/dspbridge/drv.h | 4 ++
drivers/staging/tidspbridge/rmgr/drv.c | 11 ++++++
drivers/staging/tidspbridge/rmgr/drv_interface.c | 2 +
drivers/staging/tidspbridge/rmgr/proc.c | 36 ++++++++++++++++++++
4 files changed, 53 insertions(+), 0 deletions(-)
diff --git a/drivers/staging/tidspbridge/include/dspbridge/drv.h b/drivers/staging/tidspbridge/include/dspbridge/drv.h
index 427f38b..c1f363e 100644
--- a/drivers/staging/tidspbridge/include/dspbridge/drv.h
+++ b/drivers/staging/tidspbridge/include/dspbridge/drv.h
@@ -165,6 +165,10 @@ struct process_context {
struct list_head dmm_map_list;
spinlock_t dmm_map_lock;
+ /* DMM reserved memory resources */
+ struct list_head dmm_rsv_list;
+ spinlock_t dmm_rsv_lock;
+
/* DSP Heap resources */
struct dspheap_res_object *pdspheap_list;
diff --git a/drivers/staging/tidspbridge/rmgr/drv.c b/drivers/staging/tidspbridge/rmgr/drv.c
index 91cc168..0c857b9 100644
--- a/drivers/staging/tidspbridge/rmgr/drv.c
+++ b/drivers/staging/tidspbridge/rmgr/drv.c
@@ -146,6 +146,7 @@ int drv_remove_all_dmm_res_elements(void *process_ctxt)
struct process_context *ctxt = (struct process_context *)process_ctxt;
int status = 0;
struct dmm_map_object *temp_map, *map_obj;
+ struct dmm_rsv_object *temp_rsv, *rsv_obj;
/* Free DMM mapped memory resources */
list_for_each_entry_safe(map_obj, temp_map, &ctxt->dmm_map_list, link) {
@@ -155,6 +156,16 @@ int drv_remove_all_dmm_res_elements(void *process_ctxt)
pr_err("%s: proc_un_map failed!"
" status = 0x%xn", __func__, status);
}
+
+ /* Free DMM reserved memory resources */
+ list_for_each_entry_safe(rsv_obj, temp_rsv, &ctxt->dmm_rsv_list, link) {
+ status = proc_un_reserve_memory(ctxt->hprocessor, (void *)
+ rsv_obj->dsp_reserved_addr,
+ ctxt);
+ if (status)
+ pr_err("%s: proc_un_reserve_memory failed!"
+ " status = 0x%xn", __func__, status);
+ }
return status;
}
diff --git a/drivers/staging/tidspbridge/rmgr/drv_interface.c b/drivers/staging/tidspbridge/rmgr/drv_interface.c
index 34be43f..324fcdf 100644
--- a/drivers/staging/tidspbridge/rmgr/drv_interface.c
+++ b/drivers/staging/tidspbridge/rmgr/drv_interface.c
@@ -509,6 +509,8 @@ static int bridge_open(struct inode *ip, struct file *filp)
pr_ctxt->res_state = PROC_RES_ALLOCATED;
spin_lock_init(&pr_ctxt->dmm_map_lock);
INIT_LIST_HEAD(&pr_ctxt->dmm_map_list);
+ spin_lock_init(&pr_ctxt->dmm_rsv_lock);
+ INIT_LIST_HEAD(&pr_ctxt->dmm_rsv_list);
pr_ctxt->node_id = kzalloc(sizeof(struct idr), GFP_KERNEL);
if (pr_ctxt->node_id) {
diff --git a/drivers/staging/tidspbridge/rmgr/proc.c b/drivers/staging/tidspbridge/rmgr/proc.c
index e5fec57..59c946b 100644
--- a/drivers/staging/tidspbridge/rmgr/proc.c
+++ b/drivers/staging/tidspbridge/rmgr/proc.c
@@ -1515,6 +1515,7 @@ int proc_reserve_memory(void *hprocessor, u32 ul_size,
struct dmm_object *dmm_mgr;
int status = 0;
struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
+ struct dmm_rsv_object *rsv_obj;
if (!p_proc_object) {
status = -EFAULT;
@@ -1528,6 +1529,22 @@ int proc_reserve_memory(void *hprocessor, u32 ul_size,
}
status = dmm_reserve_memory(dmm_mgr, ul_size, (u32 *) pp_rsv_addr);
+ if (status != 0)
+ goto func_end;
+
+ /*
+ * A successful reserve should be followed by insertion of rsv_obj
+ * into dmm_rsv_list, so that reserved memory resource tracking
+ * remains uptodate
+ */
+ rsv_obj = kmalloc(sizeof(struct dmm_rsv_object), GFP_KERNEL);
+ if (rsv_obj) {
+ rsv_obj->dsp_reserved_addr = (u32) *pp_rsv_addr;
+ spin_lock(&pr_ctxt->dmm_rsv_lock);
+ list_add(&rsv_obj->link, &pr_ctxt->dmm_rsv_list);
+ spin_unlock(&pr_ctxt->dmm_rsv_lock);
+ }
+
func_end:
dev_dbg(bridge, "%s: hprocessor: 0x%p ul_size: 0x%x pp_rsv_addr: 0x%p "
"status 0x%x\n", __func__, hprocessor,
@@ -1739,6 +1756,7 @@ int proc_un_reserve_memory(void *hprocessor, void *prsv_addr,
struct dmm_object *dmm_mgr;
int status = 0;
struct proc_object *p_proc_object = (struct proc_object *)hprocessor;
+ struct dmm_rsv_object *rsv_obj;
if (!p_proc_object) {
status = -EFAULT;
@@ -1752,6 +1770,24 @@ int proc_un_reserve_memory(void *hprocessor, void *prsv_addr,
}
status = dmm_un_reserve_memory(dmm_mgr, (u32) prsv_addr);
+ if (status != 0)
+ goto func_end;
+
+ /*
+ * A successful unreserve should be followed by removal of rsv_obj
+ * from dmm_rsv_list, so that reserved memory resource tracking
+ * remains uptodate
+ */
+ spin_lock(&pr_ctxt->dmm_rsv_lock);
+ list_for_each_entry(rsv_obj, &pr_ctxt->dmm_rsv_list, link) {
+ if (rsv_obj->dsp_reserved_addr == (u32) prsv_addr) {
+ list_del(&rsv_obj->link);
+ kfree(rsv_obj);
+ break;
+ }
+ }
+ spin_unlock(&pr_ctxt->dmm_rsv_lock);
+
func_end:
dev_dbg(bridge, "%s: hprocessor: 0x%p prsv_addr: 0x%p status: 0x%x\n",
__func__, hprocessor, prsv_addr, status);
--
1.7.1
_______________________________________________
devel mailing list
devel@xxxxxxxxxxxxxxxxxxxxxx
http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
