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e1000: Export core EEPROM access functions for SPI support

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A followup patch will be adding a configurable feature to enable
programming of E1000 EEPROMs from the command line or via the generic
U-Boot SPI interface.

In order for it to work it needs access to certain E1000-internal
functions, so export those in the e1000.h header file.

Signed-off-by: Kyle Moffett <Kyle.D.Moffett@boeing.com>
Cc: Ben Warren <biggerbadderben@gmail.com>
This commit is contained in:
Kyle Moffett 2011-10-18 11:05:28 +00:00 committed by Wolfgang Denk
parent 114d7fc053
commit 2326a94db1
2 changed files with 24 additions and 17 deletions
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22
drivers/net/e1000.c
View file

@ -134,13 +134,6 @@ 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_swfw_sync_acquire(struct e1000_hw *hw, uint16_t mask);
static int32_t e1000_check_phy_reset_block(struct e1000_hw *hw); static int32_t e1000_check_phy_reset_block(struct e1000_hw *hw);
#define E1000_WRITE_REG(a, reg, value) (writel((value), ((a)->hw_addr + E1000_##reg)))
#define E1000_READ_REG(a, reg) (readl((a)->hw_addr + E1000_##reg))
#define E1000_WRITE_REG_ARRAY(a, reg, offset, value) (\
writel((value), ((a)->hw_addr + E1000_##reg + ((offset) << 2))))
#define E1000_READ_REG_ARRAY(a, reg, offset) ( \
readl((a)->hw_addr + E1000_##reg + ((offset) << 2)))
#define E1000_WRITE_FLUSH(a) {uint32_t x; x = E1000_READ_REG(a, STATUS);}
#ifndef CONFIG_AP1000 /* remove for warnings */ #ifndef CONFIG_AP1000 /* remove for warnings */
static int32_t e1000_read_eeprom(struct e1000_hw *hw, uint16_t offset, static int32_t e1000_read_eeprom(struct e1000_hw *hw, uint16_t offset,
@ -152,8 +145,7 @@ static int32_t e1000_read_eeprom(struct e1000_hw *hw, uint16_t offset,
* hw - Struct containing variables accessed by shared code * hw - Struct containing variables accessed by shared code
* eecd - EECD's current value * eecd - EECD's current value
*****************************************************************************/ *****************************************************************************/
static void void e1000_raise_ee_clk(struct e1000_hw *hw, uint32_t * eecd)
e1000_raise_ee_clk(struct e1000_hw *hw, uint32_t * eecd)
{ {
/* Raise the clock input to the EEPROM (by setting the SK bit), and then /* Raise the clock input to the EEPROM (by setting the SK bit), and then
* wait 50 microseconds. * wait 50 microseconds.
@ -170,8 +162,7 @@ e1000_raise_ee_clk(struct e1000_hw *hw, uint32_t * eecd)
* hw - Struct containing variables accessed by shared code * hw - Struct containing variables accessed by shared code
* eecd - EECD's current value * eecd - EECD's current value
*****************************************************************************/ *****************************************************************************/
static void void e1000_lower_ee_clk(struct e1000_hw *hw, uint32_t * eecd)
e1000_lower_ee_clk(struct e1000_hw *hw, uint32_t * eecd)
{ {
/* Lower the clock input to the EEPROM (by clearing the SK bit), and then /* Lower the clock input to the EEPROM (by clearing the SK bit), and then
* wait 50 microseconds. * wait 50 microseconds.
@ -275,8 +266,7 @@ e1000_shift_in_ee_bits(struct e1000_hw *hw, uint16_t count)
* *
* hw - Struct containing variables accessed by shared code * hw - Struct containing variables accessed by shared code
*****************************************************************************/ *****************************************************************************/
static void void e1000_standby_eeprom(struct e1000_hw *hw)
e1000_standby_eeprom(struct e1000_hw *hw)
{ {
struct e1000_eeprom_info *eeprom = &hw->eeprom; struct e1000_eeprom_info *eeprom = &hw->eeprom;
uint32_t eecd; uint32_t eecd;
@ -354,8 +344,7 @@ static boolean_t e1000_is_onboard_nvm_eeprom(struct e1000_hw *hw)
* Lowers EEPROM clock. Clears input pin. Sets the chip select pin. This * Lowers EEPROM clock. Clears input pin. Sets the chip select pin. This
* function should be called before issuing a command to the EEPROM. * function should be called before issuing a command to the EEPROM.
*****************************************************************************/ *****************************************************************************/
static int32_t int32_t e1000_acquire_eeprom(struct e1000_hw *hw)
e1000_acquire_eeprom(struct e1000_hw *hw)
{ {
struct e1000_eeprom_info *eeprom = &hw->eeprom; struct e1000_eeprom_info *eeprom = &hw->eeprom;
uint32_t eecd, i = 0; uint32_t eecd, i = 0;
@ -671,8 +660,7 @@ e1000_read_eeprom_eerd(struct e1000_hw *hw,
return error; return error;
} }
static void void e1000_release_eeprom(struct e1000_hw *hw)
e1000_release_eeprom(struct e1000_hw *hw)
{ {
uint32_t eecd; uint32_t eecd;

19
drivers/net/e1000.h
View file

@ -55,10 +55,29 @@
#define DEBUGOUT(fmt, args...) do { } while (0) #define DEBUGOUT(fmt, args...) do { } while (0)
#endif #endif
/* I/O wrapper functions */
#define E1000_WRITE_REG(a, reg, value) \
(writel((value), ((a)->hw_addr + E1000_##reg)))
#define E1000_READ_REG(a, reg) \
(readl((a)->hw_addr + E1000_##reg))
#define E1000_WRITE_REG_ARRAY(a, reg, offset, value) \
(writel((value), ((a)->hw_addr + E1000_##reg + ((offset) << 2))))
#define E1000_READ_REG_ARRAY(a, reg, offset) \
(readl((a)->hw_addr + E1000_##reg + ((offset) << 2)))
#define E1000_WRITE_FLUSH(a) \
do { uint32_t x = E1000_READ_REG(a, STATUS); } while (0)
/* Forward declarations of structures used by the shared code */ /* Forward declarations of structures used by the shared code */
struct e1000_hw; struct e1000_hw;
struct e1000_hw_stats; struct e1000_hw_stats;
/* Internal E1000 helper functions */
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);
typedef enum { typedef enum {
FALSE = 0, FALSE = 0,
TRUE = 1 TRUE = 1