ixgbe: use link instead of I2C combined abstraction

Introduce ixgbe_link_operations struct with the following changes:

	read_i2c_combined		=> read_link
	read_i2c_combined_unlocked	=> read_link_unlocked
	write_i2c_combined		=> write_link
	write_i2c_combined_unlocked	=> write_link_unlocked

This will allow X550EM_a to override these methods for MDIO access
while X550EM_x provides methods to use I2C combined access. This
also adds a new structure, ixgbe_link_info, to hold information
about the link. Initially this is just method pointers and a bus
address.

The functions involved in combined I2C accesses were moved from
ixgbe_phy.c to ixgbe_x550.c. The underlying functions that carry
out the combined I2C accesses were left in ixgbe_phy.c because
they share some functions with other I2C methods.

v2 - set hw->link.ops in probe.
v3 - check ii->link_ops before setting it since we don't have it
for all devices.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index de634f0..9a62b55 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -9507,6 +9507,8 @@ static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
        hw->mac.ops   = *ii->mac_ops;
        hw->mac.type  = ii->mac;
        hw->mvals     = ii->mvals;
+       if (ii->link_ops)
+               hw->link.ops  = *ii->link_ops;
 
        /* EEPROM */
        hw->eeprom.ops = *ii->eeprom_ops;

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
index ebf46af..0c65814 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.c
@@ -109,8 +109,8 @@ static u8 ixgbe_ones_comp_byte_add(u8 add1, u8 add2)
  *
  *  Returns an error code on error.
  */
-static s32 ixgbe_read_i2c_combined_generic_int(struct ixgbe_hw *hw, u8 addr,
-                                              u16 reg, u16 *val, bool lock)
+s32 ixgbe_read_i2c_combined_generic_int(struct ixgbe_hw *hw, u8 addr,
+                                       u16 reg, u16 *val, bool lock)
 {
        u32 swfw_mask = hw->phy.phy_semaphore_mask;
        int max_retry = 10;
@@ -178,36 +178,6 @@ fail:
 }
 
 /**
- *  ixgbe_read_i2c_combined_generic - Perform I2C read combined operation
- *  @hw: pointer to the hardware structure
- *  @addr: I2C bus address to read from
- *  @reg: I2C device register to read from
- *  @val: pointer to location to receive read value
- *
- *  Returns an error code on error.
- */
-s32 ixgbe_read_i2c_combined_generic(struct ixgbe_hw *hw, u8 addr,
-                                   u16 reg, u16 *val)
-{
-       return ixgbe_read_i2c_combined_generic_int(hw, addr, reg, val, true);
-}
-
-/**
- *  ixgbe_read_i2c_combined_generic_unlocked - Unlocked I2C read combined
- *  @hw: pointer to the hardware structure
- *  @addr: I2C bus address to read from
- *  @reg: I2C device register to read from
- *  @val: pointer to location to receive read value
- *
- *  Returns an error code on error.
- */
-s32 ixgbe_read_i2c_combined_generic_unlocked(struct ixgbe_hw *hw, u8 addr,
-                                            u16 reg, u16 *val)
-{
-       return ixgbe_read_i2c_combined_generic_int(hw, addr, reg, val, false);
-}
-
-/**
  *  ixgbe_write_i2c_combined_generic_int - Perform I2C write combined operation
  *  @hw: pointer to the hardware structure
  *  @addr: I2C bus address to write to
@@ -217,8 +187,8 @@ s32 ixgbe_read_i2c_combined_generic_unlocked(struct ixgbe_hw *hw, u8 addr,
  *
  *  Returns an error code on error.
  */
-static s32 ixgbe_write_i2c_combined_generic_int(struct ixgbe_hw *hw, u8 addr,
-                                               u16 reg, u16 val, bool lock)
+s32 ixgbe_write_i2c_combined_generic_int(struct ixgbe_hw *hw, u8 addr,
+                                        u16 reg, u16 val, bool lock)
 {
        u32 swfw_mask = hw->phy.phy_semaphore_mask;
        int max_retry = 1;
@@ -273,36 +243,6 @@ fail:
 }
 
 /**
- *  ixgbe_write_i2c_combined_generic - Perform I2C write combined operation
- *  @hw: pointer to the hardware structure
- *  @addr: I2C bus address to write to
- *  @reg: I2C device register to write to
- *  @val: value to write
- *
- *  Returns an error code on error.
- */
-s32 ixgbe_write_i2c_combined_generic(struct ixgbe_hw *hw,
-                                    u8 addr, u16 reg, u16 val)
-{
-       return ixgbe_write_i2c_combined_generic_int(hw, addr, reg, val, true);
-}
-
-/**
- *  ixgbe_write_i2c_combined_generic_unlocked - Unlocked I2C write combined
- *  @hw: pointer to the hardware structure
- *  @addr: I2C bus address to write to
- *  @reg: I2C device register to write to
- *  @val: value to write
- *
- *  Returns an error code on error.
- */
-s32 ixgbe_write_i2c_combined_generic_unlocked(struct ixgbe_hw *hw,
-                                             u8 addr, u16 reg, u16 val)
-{
-       return ixgbe_write_i2c_combined_generic_int(hw, addr, reg, val, false);
-}
-
-/**
  *  ixgbe_identify_phy_generic - Get physical layer module
  *  @hw: pointer to hardware structure
  *

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.h
index cc735ec..ecf05f8 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_phy.h
@@ -195,12 +195,8 @@ s32 ixgbe_read_i2c_sff8472_generic(struct ixgbe_hw *hw, u8 byte_offset,
                                   u8 *sff8472_data);
 s32 ixgbe_write_i2c_eeprom_generic(struct ixgbe_hw *hw, u8 byte_offset,
                                   u8 eeprom_data);
-s32 ixgbe_read_i2c_combined_generic(struct ixgbe_hw *hw, u8 addr,
-                                   u16 reg, u16 *val);
-s32 ixgbe_read_i2c_combined_generic_unlocked(struct ixgbe_hw *hw, u8 addr,
-                                            u16 reg, u16 *val);
-s32 ixgbe_write_i2c_combined_generic(struct ixgbe_hw *hw, u8 addr,
-                                    u16 reg, u16 val);
-s32 ixgbe_write_i2c_combined_generic_unlocked(struct ixgbe_hw *hw, u8 addr,
-                                             u16 reg, u16 val);
+s32 ixgbe_read_i2c_combined_generic_int(struct ixgbe_hw *, u8 addr, u16 reg,
+                                       u16 *val, bool lock);
+s32 ixgbe_write_i2c_combined_generic_int(struct ixgbe_hw *, u8 addr, u16 reg,
+                                        u16 val, bool lock);
 #endif /* _IXGBE_PHY_H_ */

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
index f2f60cc..fe9c6ae 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_type.h
@@ -3396,16 +3396,28 @@ struct ixgbe_phy_operations {
        s32 (*read_i2c_sff8472)(struct ixgbe_hw *, u8 , u8 *);
        s32 (*read_i2c_eeprom)(struct ixgbe_hw *, u8 , u8 *);
        s32 (*write_i2c_eeprom)(struct ixgbe_hw *, u8, u8);
-       s32 (*read_i2c_combined)(struct ixgbe_hw *, u8 addr, u16 reg, u16 *val);
-       s32 (*write_i2c_combined)(struct ixgbe_hw *, u8 addr, u16 reg, u16 val);
        s32 (*check_overtemp)(struct ixgbe_hw *);
        s32 (*set_phy_power)(struct ixgbe_hw *, bool on);
        s32 (*enter_lplu)(struct ixgbe_hw *);
        s32 (*handle_lasi)(struct ixgbe_hw *hw);
-       s32 (*read_i2c_combined_unlocked)(struct ixgbe_hw *, u8 addr, u16 reg,
-                                         u16 *value);
-       s32 (*write_i2c_combined_unlocked)(struct ixgbe_hw *, u8 addr, u16 reg,
-                                          u16 value);
+       s32 (*read_i2c_byte_unlocked)(struct ixgbe_hw *, u8 offset, u8 addr,
+                                     u8 *value);
+       s32 (*write_i2c_byte_unlocked)(struct ixgbe_hw *, u8 offset, u8 addr,
+                                      u8 value);
+};
+
+struct ixgbe_link_operations {
+       s32 (*read_link)(struct ixgbe_hw *, u8 addr, u16 reg, u16 *val);
+       s32 (*read_link_unlocked)(struct ixgbe_hw *, u8 addr, u16 reg,
+                                 u16 *val);
+       s32 (*write_link)(struct ixgbe_hw *, u8 addr, u16 reg, u16 val);
+       s32 (*write_link_unlocked)(struct ixgbe_hw *, u8 addr, u16 reg,
+                                  u16 val);
+};
+
+struct ixgbe_link_info {
+       struct ixgbe_link_operations ops;
+       u8 addr;
 };
 
 struct ixgbe_eeprom_info {
@@ -3510,6 +3522,7 @@ struct ixgbe_hw {
        struct ixgbe_addr_filter_info   addr_ctrl;
        struct ixgbe_fc_info            fc;
        struct ixgbe_phy_info           phy;
+       struct ixgbe_link_info          link;
        struct ixgbe_eeprom_info        eeprom;
        struct ixgbe_bus_info           bus;
        struct ixgbe_mbx_info           mbx;
@@ -3533,6 +3546,7 @@ struct ixgbe_info {
        const struct ixgbe_eeprom_operations    *eeprom_ops;
        const struct ixgbe_phy_operations       *phy_ops;
        const struct ixgbe_mbx_operations       *mbx_ops;
+       const struct ixgbe_link_operations      *link_ops;
        const u32                       *mvals;
 };
 

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
index c6669c2..252e52d 100644 (file)
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_x550.c
@@ -36,6 +36,23 @@ static s32 ixgbe_get_invariants_X550_x(struct ixgbe_hw *hw)
 {
        struct ixgbe_mac_info *mac = &hw->mac;
        struct ixgbe_phy_info *phy = &hw->phy;
+       struct ixgbe_link_info *link = &hw->link;
+
+       /* Start with X540 invariants, since so simular */
+       ixgbe_get_invariants_X540(hw);
+
+       if (mac->ops.get_media_type(hw) != ixgbe_media_type_copper)
+               phy->ops.set_phy_power = NULL;
+
+       link->addr = IXGBE_CS4227;
+
+       return 0;
+}
+
+static s32 ixgbe_get_invariants_X550_a(struct ixgbe_hw *hw)
+{
+       struct ixgbe_mac_info *mac = &hw->mac;
+       struct ixgbe_phy_info *phy = &hw->phy;
 
        /* Start with X540 invariants, since so simular */
        ixgbe_get_invariants_X540(hw);
@@ -72,8 +89,7 @@ static void ixgbe_setup_mux_ctl(struct ixgbe_hw *hw)
  */
 static s32 ixgbe_read_cs4227(struct ixgbe_hw *hw, u16 reg, u16 *value)
 {
-       return hw->phy.ops.read_i2c_combined_unlocked(hw, IXGBE_CS4227, reg,
-                                                     value);
+       return hw->link.ops.read_link_unlocked(hw, hw->link.addr, reg, value);
 }
 
 /**
@@ -86,8 +102,7 @@ static s32 ixgbe_read_cs4227(struct ixgbe_hw *hw, u16 reg, u16 *value)
  */
 static s32 ixgbe_write_cs4227(struct ixgbe_hw *hw, u16 reg, u16 value)
 {
-       return hw->phy.ops.write_i2c_combined_unlocked(hw, IXGBE_CS4227, reg,
-                                                      value);
+       return hw->link.ops.write_link_unlocked(hw, hw->link.addr, reg, value);
 }
 
 /**
@@ -325,6 +340,68 @@ static s32 ixgbe_write_phy_reg_x550em(struct ixgbe_hw *hw, u32 reg_addr,
        return IXGBE_NOT_IMPLEMENTED;
 }
 
+/**
+ * ixgbe_read_i2c_combined_generic - Perform I2C read combined operation
+ * @hw: pointer to the hardware structure
+ * @addr: I2C bus address to read from
+ * @reg: I2C device register to read from
+ * @val: pointer to location to receive read value
+ *
+ * Returns an error code on error.
+ **/
+static s32 ixgbe_read_i2c_combined_generic(struct ixgbe_hw *hw, u8 addr,
+                                          u16 reg, u16 *val)
+{
+       return ixgbe_read_i2c_combined_generic_int(hw, addr, reg, val, true);
+}
+
+/**
+ * ixgbe_read_i2c_combined_generic_unlocked - Do I2C read combined operation
+ * @hw: pointer to the hardware structure
+ * @addr: I2C bus address to read from
+ * @reg: I2C device register to read from
+ * @val: pointer to location to receive read value
+ *
+ * Returns an error code on error.
+ **/
+static s32
+ixgbe_read_i2c_combined_generic_unlocked(struct ixgbe_hw *hw, u8 addr,
+                                        u16 reg, u16 *val)
+{
+       return ixgbe_read_i2c_combined_generic_int(hw, addr, reg, val, false);
+}
+
+/**
+ * ixgbe_write_i2c_combined_generic - Perform I2C write combined operation
+ * @hw: pointer to the hardware structure
+ * @addr: I2C bus address to write to
+ * @reg: I2C device register to write to
+ * @val: value to write
+ *
+ * Returns an error code on error.
+ **/
+static s32 ixgbe_write_i2c_combined_generic(struct ixgbe_hw *hw,
+                                           u8 addr, u16 reg, u16 val)
+{
+       return ixgbe_write_i2c_combined_generic_int(hw, addr, reg, val, true);
+}
+
+/**
+ * ixgbe_write_i2c_combined_generic_unlocked - Do I2C write combined operation
+ * @hw: pointer to the hardware structure
+ * @addr: I2C bus address to write to
+ * @reg: I2C device register to write to
+ * @val: value to write
+ *
+ * Returns an error code on error.
+ **/
+static s32
+ixgbe_write_i2c_combined_generic_unlocked(struct ixgbe_hw *hw,
+                                         u8 addr, u16 reg, u16 val)
+{
+       return ixgbe_write_i2c_combined_generic_int(hw, addr, reg, val, false);
+}
+
 /** ixgbe_init_eeprom_params_X550 - Initialize EEPROM params
  *  @hw: pointer to hardware structure
  *
@@ -1338,8 +1415,10 @@ ixgbe_setup_mac_link_sfp_x550em(struct ixgbe_hw *hw,
                reg_val = (IXGBE_CS4227_EDC_MODE_CX1 << 1) | 0x1;
        else
                reg_val = (IXGBE_CS4227_EDC_MODE_SR << 1) | 0x1;
-       status = ixgbe_write_i2c_combined_generic(hw, IXGBE_CS4227,
-                                                 reg_slice, reg_val);
+
+       status = hw->link.ops.write_link(hw, hw->link.addr, reg_slice,
+                                        reg_val);
+
        return status;
 }
 
@@ -3216,11 +3295,6 @@ static const struct ixgbe_phy_operations phy_ops_X550EM_x = {
        .identify               = &ixgbe_identify_phy_x550em,
        .read_reg               = &ixgbe_read_phy_reg_generic,
        .write_reg              = &ixgbe_write_phy_reg_generic,
-       .read_i2c_combined      = &ixgbe_read_i2c_combined_generic,
-       .write_i2c_combined     = &ixgbe_write_i2c_combined_generic,
-       .read_i2c_combined_unlocked = &ixgbe_read_i2c_combined_generic_unlocked,
-       .write_i2c_combined_unlocked =
-                                    &ixgbe_write_i2c_combined_generic_unlocked,
 };
 
 static const struct ixgbe_phy_operations phy_ops_x550em_a = {
@@ -3233,6 +3307,13 @@ static const struct ixgbe_phy_operations phy_ops_x550em_a = {
        .write_reg_mdi          = &ixgbe_write_phy_reg_mdi,
 };
 
+static const struct ixgbe_link_operations link_ops_x550em_x = {
+       .read_link              = &ixgbe_read_i2c_combined_generic,
+       .read_link_unlocked     = &ixgbe_read_i2c_combined_generic_unlocked,
+       .write_link             = &ixgbe_write_i2c_combined_generic,
+       .write_link_unlocked    = &ixgbe_write_i2c_combined_generic_unlocked,
+};
+
 static const u32 ixgbe_mvals_X550[IXGBE_MVALS_IDX_LIMIT] = {
        IXGBE_MVALS_INIT(X550)
 };
@@ -3263,11 +3344,12 @@ const struct ixgbe_info ixgbe_X550EM_x_info = {
        .phy_ops                = &phy_ops_X550EM_x,
        .mbx_ops                = &mbx_ops_generic,
        .mvals                  = ixgbe_mvals_X550EM_x,
+       .link_ops               = &link_ops_x550em_x,
 };
 
 const struct ixgbe_info ixgbe_x550em_a_info = {
        .mac                    = ixgbe_mac_x550em_a,
-       .get_invariants         = &ixgbe_get_invariants_X550_x,
+       .get_invariants         = &ixgbe_get_invariants_X550_a,
        .mac_ops                = &mac_ops_x550em_a,
        .eeprom_ops             = &eeprom_ops_X550EM_x,
        .phy_ops                = &phy_ops_x550em_a,