[PATCH 09/10] drm/amd/display: [FW Promotion] Release 0.0.80

[Qingqing Zhuo]

From: Anthony Koo <Anthony.Koo at amd.com>

- Add volatile to avoid incomplete flushing of data in rb

Reviewed-by: Aric Cyr <Aric.Cyr at amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo at amd.com>
Signed-off-by: Anthony Koo <Anthony.Koo at amd.com>
---
 .../gpu/drm/amd/display/dmub/inc/dmub_cmd.h   | 29 ++++++++++++-------
 1 file changed, 18 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
index 7b684e7f60df..b322677dafbd 100644
--- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
+++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
@@ -47,10 +47,10 @@
 
 /* Firmware versioning. */
 #ifdef DMUB_EXPOSE_VERSION
-#define DMUB_FW_VERSION_GIT_HASH 0x7383caadc
+#define DMUB_FW_VERSION_GIT_HASH 0x591aacca1
 #define DMUB_FW_VERSION_MAJOR 0
 #define DMUB_FW_VERSION_MINOR 0
-#define DMUB_FW_VERSION_REVISION 79
+#define DMUB_FW_VERSION_REVISION 80
 #define DMUB_FW_VERSION_TEST 0
 #define DMUB_FW_VERSION_VBIOS 0
 #define DMUB_FW_VERSION_HOTFIX 0
@@ -2485,14 +2485,16 @@ static inline bool dmub_rb_full(struct dmub_rb *rb)
 static inline bool dmub_rb_push_front(struct dmub_rb *rb,
 				      const union dmub_rb_cmd *cmd)
 {
-	uint8_t *dst = (uint8_t *)(rb->base_address) + rb->wrpt;
-	const uint8_t *src = (const uint8_t *)cmd;
+	uint64_t volatile *dst = (uint64_t volatile *)(rb->base_address) + rb->wrpt / sizeof(uint64_t);
+	const uint64_t *src = (const uint64_t *)cmd;
+	uint8_t i;
 
 	if (dmub_rb_full(rb))
 		return false;
 
 	// copying data
-	dmub_memcpy(dst, src, DMUB_RB_CMD_SIZE);
+	for (i = 0; i < DMUB_RB_CMD_SIZE / sizeof(uint64_t); i++)
+		*dst++ = *src++;
 
 	rb->wrpt += DMUB_RB_CMD_SIZE;
 
@@ -2601,14 +2603,16 @@ static inline bool dmub_rb_peek_offset(struct dmub_rb *rb,
 static inline bool dmub_rb_out_front(struct dmub_rb *rb,
 				 union dmub_rb_out_cmd *cmd)
 {
-	const uint8_t *src = (const uint8_t *)(rb->base_address) + rb->rptr;
-	uint8_t *dst = (uint8_t *)cmd;
+	const uint64_t volatile *src = (const uint64_t volatile *)(rb->base_address) + rb->rptr / sizeof(uint64_t);
+	uint64_t *dst = (uint64_t *)cmd;
+	uint8_t i;
 
 	if (dmub_rb_empty(rb))
 		return false;
 
 	// copying data
-	dmub_memcpy(dst, src, DMUB_RB_CMD_SIZE);
+	for (i = 0; i < DMUB_RB_CMD_SIZE / sizeof(uint64_t); i++)
+		*dst++ = *src++;
 
 	return true;
 }
@@ -2643,14 +2647,17 @@ static inline bool dmub_rb_pop_front(struct dmub_rb *rb)
  */
 static inline void dmub_rb_flush_pending(const struct dmub_rb *rb)
 {
-	uint8_t buf[DMUB_RB_CMD_SIZE];
 	uint32_t rptr = rb->rptr;
 	uint32_t wptr = rb->wrpt;
 
 	while (rptr != wptr) {
-		const uint8_t *data = (const uint8_t *)rb->base_address + rptr;
+		uint64_t volatile *data = (uint64_t volatile *)rb->base_address + rptr / sizeof(uint64_t);
+		//uint64_t volatile *p = (uint64_t volatile *)data;
+		uint64_t temp;
+		uint8_t i;
 
-		dmub_memcpy(buf, data, DMUB_RB_CMD_SIZE);
+		for (i = 0; i < DMUB_RB_CMD_SIZE / sizeof(uint64_t); i++)
+			temp = *data++;
 
 		rptr += DMUB_RB_CMD_SIZE;
 		if (rptr >= rb->capacity)
-- 
2.25.1