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Commit c8ca64ec authored by Sivan Reinstein's avatar Sivan Reinstein
Browse files

msm: gsi: Add support for EV RP DDR access feature 



Allocate memory on DDR for event RP and providing it
to the GSI context.
Accessing the event RP using the DDR pointer instead
of reading the GSI register.

Change-Id: Ib25ae4ee8abbc73a74f24d360f64b1295a9d4520
Acked-by: default avatarNadav Levintov <nadavl@qti.qualcomm.com>
Signed-off-by: default avatarSivan Reinstein <sivanr@codeaurora.org>
parent 9a643a21

include/linux/msm_gsi.h

+7 −2
Original line number Diff line number Diff line
@@ -186,6 +186,8 @@ enum gsi_evt_ring_elem_size { 
 * @rp_update_addr:  physical address to which event read pointer should be

 *                   written on every event generation. must be set to 0 when

 *                   no update is desdired

 * @rp_update_vaddr: virtual address of event ring read pointer (set to NULL

 *                   when not applicable)

 * @exclusive:       if true, only one GSI channel can be associated with this

 *                   event ring. if false, the event ring can be shared among

 *                   multiple GSI channels but in that case no polling
@@ -196,6 +198,7 @@ enum gsi_evt_ring_elem_size { 
 * @evchid:          the event ID that is being specifically requested (this is

 *                   relevant for MHI where doorbell routing requires ERs to be

 *                   physically contiguous)

 * @gsi_read_event_ring_rp: function reads the value of the event ring RP.

 */

struct gsi_evt_ring_props {

	enum gsi_evt_chtype intf;
@@ -209,11 +212,14 @@ struct gsi_evt_ring_props { 
	uint32_t intvec;

	uint64_t msi_addr;

	uint64_t rp_update_addr;

	void *rp_update_vaddr;

	bool exclusive;

	void (*err_cb)(struct gsi_evt_err_notify *notify);

	void *user_data;

	bool evchid_valid;

	uint8_t evchid;

	uint64_t (*gsi_read_event_ring_rp)(struct gsi_evt_ring_props *props,

						uint8_t id, int ee);

};



enum gsi_chan_mode {
@@ -2021,6 +2027,5 @@ static inline void gsi_wdi3_write_evt_ring_db( 
static inline void gsi_wdi3_dump_register(unsigned long chan_hdl)

{

}



#endif /* IS_ENABLED(CONFIG_GSI) */

#endif