[PATCH 14/18] hw/net: cadence_gem: Add a new 'phy-addr' property

[Bin Meng <bmeng.cn@gmail.com>]

From: Bin Meng <bin.meng@windriver.com>

At present the PHY address of the PHY connected to GEM is hard-coded
to either 23 (BOARD_PHY_ADDRESS) or 0. This might not be the case for
all boards. Add a new 'phy-addr' property so that board can specify
the PHY address for each GEM instance.

Signed-off-by: Bin Meng <bin.meng@windriver.com>
---

 hw/net/cadence_gem.c         | 7 +++++--
 include/hw/net/cadence_gem.h | 2 ++
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c
index a93b5c0..9fa03de 100644
--- a/hw/net/cadence_gem.c
+++ b/hw/net/cadence_gem.c
@@ -1446,7 +1446,8 @@ static uint64_t gem_read(void *opaque, hwaddr offset, unsigned size)
             uint32_t phy_addr, reg_num;
 
             phy_addr = (retval & GEM_PHYMNTNC_ADDR) >> GEM_PHYMNTNC_ADDR_SHFT;
-            if (phy_addr == BOARD_PHY_ADDRESS || phy_addr == 0) {
+            if (phy_addr == BOARD_PHY_ADDRESS || phy_addr == 0 ||
+                phy_addr == s->phy_addr) {
                 reg_num = (retval & GEM_PHYMNTNC_REG) >> GEM_PHYMNTNC_REG_SHIFT;
                 retval &= 0xFFFF0000;
                 retval |= gem_phy_read(s, reg_num);
@@ -1569,7 +1570,8 @@ static void gem_write(void *opaque, hwaddr offset, uint64_t val,
             uint32_t phy_addr, reg_num;
 
             phy_addr = (val & GEM_PHYMNTNC_ADDR) >> GEM_PHYMNTNC_ADDR_SHFT;
-            if (phy_addr == BOARD_PHY_ADDRESS || phy_addr == 0) {
+            if (phy_addr == BOARD_PHY_ADDRESS || phy_addr == 0 ||
+                phy_addr == s->phy_addr) {
                 reg_num = (val & GEM_PHYMNTNC_REG) >> GEM_PHYMNTNC_REG_SHIFT;
                 gem_phy_write(s, reg_num, val);
             }
@@ -1682,6 +1684,7 @@ static Property gem_properties[] = {
     DEFINE_NIC_PROPERTIES(CadenceGEMState, conf),
     DEFINE_PROP_UINT32("revision", CadenceGEMState, revision,
                        GEM_MODID_VALUE),
+    DEFINE_PROP_UINT8("phy-addr", CadenceGEMState, phy_addr, 0),
     DEFINE_PROP_UINT8("num-priority-queues", CadenceGEMState,
                       num_priority_queues, 1),
     DEFINE_PROP_UINT8("num-type1-screeners", CadenceGEMState,
diff --git a/include/hw/net/cadence_gem.h b/include/hw/net/cadence_gem.h
index 54e646f..01c6189 100644
--- a/include/hw/net/cadence_gem.h
+++ b/include/hw/net/cadence_gem.h
@@ -73,6 +73,8 @@ typedef struct CadenceGEMState {
     /* Mask of register bits which are write 1 to clear */
     uint32_t regs_w1c[CADENCE_GEM_MAXREG];
 
+    /* PHY address */
+    uint8_t phy_addr;
     /* PHY registers backing store */
     uint16_t phy_regs[32];
 
-- 
2.7.4