[U-Boot] [PATCH] drivers/net/e1000: Introduce CONFIG_E1000_NO_NVM
Rojhalat Ibrahim
imr at rtschenk.de
Mon Oct 7 18:30:39 CEST 2013
The e1000 driver expects to always have some kind of non-volatile memory
attached directly to the ethernet controller chip. This means that I would
have to add an additional separate flash chip to my custom board just to
store essentially the MAC address. Since I don't want to do that, this patch
introduces a new config option CONFIG_E1000_NO_NVM. If defined it disables
all accesses to the NVM. I have tested the patch with a 82574 controller.
Signed-off-by: Rojhalat Ibrahim <imr at rtschenk.de>
---
drivers/net/e1000.c | 34 +++++++++++++++++++++++++++++-----
drivers/net/e1000.h | 9 +++++++++
2 files changed, 38 insertions(+), 5 deletions(-)
diff --git a/drivers/net/e1000.c b/drivers/net/e1000.c
index 57aa53d..9a66e68 100644
--- a/drivers/net/e1000.c
+++ b/drivers/net/e1000.c
@@ -114,12 +114,13 @@ static int e1000_write_phy_reg(struct e1000_hw *hw, uint32_t reg_addr,
static int32_t e1000_phy_hw_reset(struct e1000_hw *hw);
static int e1000_phy_reset(struct e1000_hw *hw);
static int e1000_detect_gig_phy(struct e1000_hw *hw);
-static void e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw);
static void e1000_set_media_type(struct e1000_hw *hw);
static int32_t e1000_swfw_sync_acquire(struct e1000_hw *hw, uint16_t mask);
static int32_t e1000_check_phy_reset_block(struct e1000_hw *hw);
+#ifndef CONFIG_E1000_NO_NVM
+static void e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw);
static int32_t e1000_read_eeprom(struct e1000_hw *hw, uint16_t offset,
uint16_t words,
uint16_t *data);
@@ -885,6 +886,7 @@ static int e1000_validate_eeprom_checksum(struct e1000_hw *hw)
return -E1000_ERR_EEPROM;
}
+#endif /* CONFIG_E1000_NO_NVM */
/*****************************************************************************
* Set PHY to class A mode
@@ -897,6 +899,7 @@ static int e1000_validate_eeprom_checksum(struct e1000_hw *hw)
static int32_t
e1000_set_phy_mode(struct e1000_hw *hw)
{
+#ifndef CONFIG_E1000_NO_NVM
int32_t ret_val;
uint16_t eeprom_data;
@@ -923,10 +926,11 @@ e1000_set_phy_mode(struct e1000_hw *hw)
hw->phy_reset_disable = false;
}
}
-
+#endif
return E1000_SUCCESS;
}
+#ifndef CONFIG_E1000_NO_NVM
/***************************************************************************
*
* Obtaining software semaphore bit (SMBI) before resetting PHY.
@@ -965,6 +969,7 @@ e1000_get_software_semaphore(struct e1000_hw *hw)
return E1000_SUCCESS;
}
+#endif
/***************************************************************************
* This function clears HW semaphore bits.
@@ -977,6 +982,7 @@ e1000_get_software_semaphore(struct e1000_hw *hw)
static void
e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw)
{
+#ifndef CONFIG_E1000_NO_NVM
uint32_t swsm;
DEBUGFUNC();
@@ -991,6 +997,7 @@ e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw)
} else
swsm &= ~(E1000_SWSM_SWESMBI);
E1000_WRITE_REG(hw, SWSM, swsm);
+#endif
}
/***************************************************************************
@@ -1007,6 +1014,7 @@ e1000_put_hw_eeprom_semaphore(struct e1000_hw *hw)
static int32_t
e1000_get_hw_eeprom_semaphore(struct e1000_hw *hw)
{
+#ifndef CONFIG_E1000_NO_NVM
int32_t timeout;
uint32_t swsm;
@@ -1043,7 +1051,7 @@ e1000_get_hw_eeprom_semaphore(struct e1000_hw *hw)
"SWESMBI bit is set.\n");
return -E1000_ERR_EEPROM;
}
-
+#endif
return E1000_SUCCESS;
}
@@ -1097,6 +1105,7 @@ static bool e1000_is_second_port(struct e1000_hw *hw)
}
}
+#ifndef CONFIG_E1000_NO_NVM
/******************************************************************************
* Reads the adapter's MAC address from the EEPROM and inverts the LSB for the
* second function of dual function devices
@@ -1136,6 +1145,7 @@ e1000_read_mac_addr(struct eth_device *nic)
#endif
return 0;
}
+#endif
/******************************************************************************
* Initializes receive address filters.
@@ -1764,9 +1774,11 @@ static int
e1000_setup_link(struct eth_device *nic)
{
struct e1000_hw *hw = nic->priv;
- uint32_t ctrl_ext;
int32_t ret_val;
+#ifndef CONFIG_E1000_NO_NVM
+ uint32_t ctrl_ext;
uint16_t eeprom_data;
+#endif
DEBUGFUNC();
@@ -1775,6 +1787,7 @@ e1000_setup_link(struct eth_device *nic)
if (e1000_check_phy_reset_block(hw))
return E1000_SUCCESS;
+#ifndef CONFIG_E1000_NO_NVM
/* Read and store word 0x0F of the EEPROM. This word contains bits
* that determine the hardware's default PAUSE (flow control) mode,
* a bit that determines whether the HW defaults to enabling or
@@ -1788,7 +1801,7 @@ e1000_setup_link(struct eth_device *nic)
DEBUGOUT("EEPROM Read Error\n");
return -E1000_ERR_EEPROM;
}
-
+#endif
if (hw->fc == e1000_fc_default) {
switch (hw->mac_type) {
case e1000_ich8lan:
@@ -1797,6 +1810,7 @@ e1000_setup_link(struct eth_device *nic)
hw->fc = e1000_fc_full;
break;
default:
+#ifndef CONFIG_E1000_NO_NVM
ret_val = e1000_read_eeprom(hw,
EEPROM_INIT_CONTROL2_REG, 1, &eeprom_data);
if (ret_val) {
@@ -1809,6 +1823,7 @@ e1000_setup_link(struct eth_device *nic)
EEPROM_WORD0F_ASM_DIR)
hw->fc = e1000_fc_tx_pause;
else
+#endif
hw->fc = e1000_fc_full;
break;
}
@@ -1828,6 +1843,7 @@ e1000_setup_link(struct eth_device *nic)
DEBUGOUT("After fix-ups FlowControl is now = %x\n", hw->fc);
+#ifndef CONFIG_E1000_NO_NVM
/* Take the 4 bits from EEPROM word 0x0F that determine the initial
* polarity value for the SW controlled pins, and setup the
* Extended Device Control reg with that info.
@@ -1840,6 +1856,7 @@ e1000_setup_link(struct eth_device *nic)
SWDPIO__EXT_SHIFT);
E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext);
}
+#endif
/* Call the necessary subroutine to configure the link. */
ret_val = (hw->media_type == e1000_media_type_fiber) ?
@@ -5196,6 +5213,7 @@ e1000_initialize(bd_t * bis)
e1000_reset_hw(hw);
list_add_tail(&hw->list_node, &e1000_hw_list);
+#ifndef CONFIG_E1000_NO_NVM
/* Validate the EEPROM and get chipset information */
#if !defined(CONFIG_MVBC_1G)
if (e1000_init_eeprom_params(hw)) {
@@ -5206,11 +5224,17 @@ e1000_initialize(bd_t * bis)
continue;
#endif
e1000_read_mac_addr(nic);
+#endif
e1000_get_bus_type(hw);
+#ifndef CONFIG_E1000_NO_NVM
printf("e1000: %02x:%02x:%02x:%02x:%02x:%02x\n ",
nic->enetaddr[0], nic->enetaddr[1], nic->enetaddr[2],
nic->enetaddr[3], nic->enetaddr[4], nic->enetaddr[5]);
+#else
+ memset(nic->enetaddr, 0, 6);
+ printf("e1000: no NVM\n");
+#endif
/* Set up the function pointers and register the device */
nic->init = e1000_init;
diff --git a/drivers/net/e1000.h b/drivers/net/e1000.h
index 25884f5..ff87af2 100644
--- a/drivers/net/e1000.h
+++ b/drivers/net/e1000.h
@@ -63,11 +63,14 @@ struct e1000_hw_stats;
/* Internal E1000 helper functions */
struct e1000_hw *e1000_find_card(unsigned int cardnum);
+
+#ifndef CONFIG_E1000_NO_NVM
int32_t e1000_acquire_eeprom(struct e1000_hw *hw);
void e1000_standby_eeprom(struct e1000_hw *hw);
void e1000_release_eeprom(struct e1000_hw *hw);
void e1000_raise_ee_clk(struct e1000_hw *hw, uint32_t *eecd);
void e1000_lower_ee_clk(struct e1000_hw *hw, uint32_t *eecd);
+#endif
#ifdef CONFIG_E1000_SPI
int do_e1000_spi(cmd_tbl_t *cmdtp, struct e1000_hw *hw,
@@ -1019,6 +1022,7 @@ struct e1000_hw_stats {
uint64_t tsctfc;
};
+#ifndef CONFIG_E1000_NO_NVM
struct e1000_eeprom_info {
e1000_eeprom_type type;
uint16_t word_size;
@@ -1029,6 +1033,7 @@ e1000_eeprom_type type;
bool use_eerd;
bool use_eewr;
};
+#endif
typedef enum {
e1000_smart_speed_default = 0,
@@ -1081,10 +1086,14 @@ struct e1000_hw {
uint32_t io_base;
#endif
uint32_t asf_firmware_present;
+#ifndef CONFIG_E1000_NO_NVM
uint32_t eeprom_semaphore_present;
+#endif
uint32_t swfw_sync_present;
uint32_t swfwhw_semaphore_present;
+#ifndef CONFIG_E1000_NO_NVM
struct e1000_eeprom_info eeprom;
+#endif
e1000_ms_type master_slave;
e1000_ms_type original_master_slave;
e1000_ffe_config ffe_config_state;
--
1.8.1.5
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