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-rw-r--r--drivers/thunderbolt/usb4.c77
1 files changed, 28 insertions, 49 deletions
diff --git a/drivers/thunderbolt/usb4.c b/drivers/thunderbolt/usb4.c
index d88e28eee975..5f3237d66987 100644
--- a/drivers/thunderbolt/usb4.c
+++ b/drivers/thunderbolt/usb4.c
@@ -92,16 +92,6 @@ static int usb4_switch_op_write_data(struct tb_switch *sw, const void *data,
return tb_sw_write(sw, data, TB_CFG_SWITCH, ROUTER_CS_9, dwords);
}
-static int usb4_switch_op_read_metadata(struct tb_switch *sw, u32 *metadata)
-{
- return tb_sw_read(sw, metadata, TB_CFG_SWITCH, ROUTER_CS_25, 1);
-}
-
-static int usb4_switch_op_write_metadata(struct tb_switch *sw, u32 metadata)
-{
- return tb_sw_write(sw, &metadata, TB_CFG_SWITCH, ROUTER_CS_25, 1);
-}
-
static int usb4_do_read_data(u16 address, void *buf, size_t size,
read_block_fn read_block, void *read_block_data)
{
@@ -171,11 +161,18 @@ static int usb4_do_write_data(unsigned int address, const void *buf, size_t size
return 0;
}
-static int usb4_switch_op(struct tb_switch *sw, u16 opcode, u8 *status)
+static int usb4_switch_op(struct tb_switch *sw, u16 opcode, u32 *metadata,
+ u8 *status)
{
u32 val;
int ret;
+ if (metadata) {
+ ret = tb_sw_write(sw, metadata, TB_CFG_SWITCH, ROUTER_CS_25, 1);
+ if (ret)
+ return ret;
+ }
+
val = opcode | ROUTER_CS_26_OV;
ret = tb_sw_write(sw, &val, TB_CFG_SWITCH, ROUTER_CS_26, 1);
if (ret)
@@ -195,7 +192,9 @@ static int usb4_switch_op(struct tb_switch *sw, u16 opcode, u8 *status)
if (status)
*status = (val & ROUTER_CS_26_STATUS_MASK) >>
ROUTER_CS_26_STATUS_SHIFT;
- return 0;
+
+ return metadata ?
+ tb_sw_read(sw, metadata, TB_CFG_SWITCH, ROUTER_CS_25, 1) : 0;
}
static void usb4_switch_check_wakes(struct tb_switch *sw)
@@ -350,11 +349,7 @@ static int usb4_switch_drom_read_block(void *data,
metadata |= (dwaddress << USB4_DROM_ADDRESS_SHIFT) &
USB4_DROM_ADDRESS_MASK;
- ret = usb4_switch_op_write_metadata(sw, metadata);
- if (ret)
- return ret;
-
- ret = usb4_switch_op(sw, USB4_SWITCH_OP_DROM_READ, &status);
+ ret = usb4_switch_op(sw, USB4_SWITCH_OP_DROM_READ, &metadata, &status);
if (ret)
return ret;
@@ -510,17 +505,14 @@ int usb4_switch_nvm_sector_size(struct tb_switch *sw)
u8 status;
int ret;
- ret = usb4_switch_op(sw, USB4_SWITCH_OP_NVM_SECTOR_SIZE, &status);
+ ret = usb4_switch_op(sw, USB4_SWITCH_OP_NVM_SECTOR_SIZE, &metadata,
+ &status);
if (ret)
return ret;
if (status)
return status == 0x2 ? -EOPNOTSUPP : -EIO;
- ret = usb4_switch_op_read_metadata(sw, &metadata);
- if (ret)
- return ret;
-
return metadata & USB4_NVM_SECTOR_SIZE_MASK;
}
@@ -537,11 +529,7 @@ static int usb4_switch_nvm_read_block(void *data,
metadata |= (dwaddress << USB4_NVM_READ_OFFSET_SHIFT) &
USB4_NVM_READ_OFFSET_MASK;
- ret = usb4_switch_op_write_metadata(sw, metadata);
- if (ret)
- return ret;
-
- ret = usb4_switch_op(sw, USB4_SWITCH_OP_NVM_READ, &status);
+ ret = usb4_switch_op(sw, USB4_SWITCH_OP_NVM_READ, &metadata, &status);
if (ret)
return ret;
@@ -579,11 +567,8 @@ static int usb4_switch_nvm_set_offset(struct tb_switch *sw,
metadata = (dwaddress << USB4_NVM_SET_OFFSET_SHIFT) &
USB4_NVM_SET_OFFSET_MASK;
- ret = usb4_switch_op_write_metadata(sw, metadata);
- if (ret)
- return ret;
-
- ret = usb4_switch_op(sw, USB4_SWITCH_OP_NVM_SET_OFFSET, &status);
+ ret = usb4_switch_op(sw, USB4_SWITCH_OP_NVM_SET_OFFSET, &metadata,
+ &status);
if (ret)
return ret;
@@ -601,7 +586,7 @@ static int usb4_switch_nvm_write_next_block(void *data, const void *buf,
if (ret)
return ret;
- ret = usb4_switch_op(sw, USB4_SWITCH_OP_NVM_WRITE, &status);
+ ret = usb4_switch_op(sw, USB4_SWITCH_OP_NVM_WRITE, NULL, &status);
if (ret)
return ret;
@@ -648,7 +633,7 @@ int usb4_switch_nvm_authenticate(struct tb_switch *sw)
{
int ret;
- ret = usb4_switch_op(sw, USB4_SWITCH_OP_NVM_AUTH, NULL);
+ ret = usb4_switch_op(sw, USB4_SWITCH_OP_NVM_AUTH, NULL, NULL);
switch (ret) {
/*
* The router is power cycled once NVM_AUTH is started so it is
@@ -714,14 +699,12 @@ int usb4_switch_nvm_authenticate_status(struct tb_switch *sw, u32 *status)
*/
bool usb4_switch_query_dp_resource(struct tb_switch *sw, struct tb_port *in)
{
+ u32 metadata = in->port;
u8 status;
int ret;
- ret = usb4_switch_op_write_metadata(sw, in->port);
- if (ret)
- return false;
-
- ret = usb4_switch_op(sw, USB4_SWITCH_OP_QUERY_DP_RESOURCE, &status);
+ ret = usb4_switch_op(sw, USB4_SWITCH_OP_QUERY_DP_RESOURCE, &metadata,
+ &status);
/*
* If DP resource allocation is not supported assume it is
* always available.
@@ -746,14 +729,12 @@ bool usb4_switch_query_dp_resource(struct tb_switch *sw, struct tb_port *in)
*/
int usb4_switch_alloc_dp_resource(struct tb_switch *sw, struct tb_port *in)
{
+ u32 metadata = in->port;
u8 status;
int ret;
- ret = usb4_switch_op_write_metadata(sw, in->port);
- if (ret)
- return ret;
-
- ret = usb4_switch_op(sw, USB4_SWITCH_OP_ALLOC_DP_RESOURCE, &status);
+ ret = usb4_switch_op(sw, USB4_SWITCH_OP_ALLOC_DP_RESOURCE, &metadata,
+ &status);
if (ret == -EOPNOTSUPP)
return 0;
else if (ret)
@@ -771,14 +752,12 @@ int usb4_switch_alloc_dp_resource(struct tb_switch *sw, struct tb_port *in)
*/
int usb4_switch_dealloc_dp_resource(struct tb_switch *sw, struct tb_port *in)
{
+ u32 metadata = in->port;
u8 status;
int ret;
- ret = usb4_switch_op_write_metadata(sw, in->port);
- if (ret)
- return ret;
-
- ret = usb4_switch_op(sw, USB4_SWITCH_OP_DEALLOC_DP_RESOURCE, &status);
+ ret = usb4_switch_op(sw, USB4_SWITCH_OP_DEALLOC_DP_RESOURCE, &metadata,
+ &status);
if (ret == -EOPNOTSUPP)
return 0;
else if (ret)
generated by cgit v1.2.3 (git 2.25.1) at 2025-03-17 14:34:17 +0000