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Basic non-volatile storage support

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This commit is contained in:
Michael Brown
2006-11-29 02:41:08 +00:00
parent 70d4b4f7cf
commit 4cd56820ea
3 changed files with 243 additions and 11 deletions
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118
src/drivers/net/etherfabric.c
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@@ -18,9 +18,11 @@
#include "etherboot.h"
#include "nic.h"
#include <errno.h>
#include <gpxe/pci.h>
#include <gpxe/bitbash.h>
#include <gpxe/i2c.h>
#include <gpxe/nvs.h>
#include "timer.h"
#define dma_addr_t unsigned long
#include "etherfabric.h"
@@ -210,6 +212,9 @@ struct efab_nic {
struct i2c_bit_basher ef1002_i2c;
unsigned long ef1002_i2c_outputs;
struct i2c_device ef1002_eeprom;
/** NVS access */
struct nvs_device nvs;
};
/**************************************************************************
@@ -2206,10 +2211,13 @@ struct efab_spi_device {
unsigned int device_id;
/** Address length (in bytes) */
unsigned int addr_len;
/** Read command */
unsigned int read_command;
/** Device size */
unsigned int len;
};
#define SPI_WRITE_CMD 0x02
#define SPI_READ_CMD 0x03
/**
* Wait for SPI command completion
*
@@ -2234,8 +2242,8 @@ static int falcon_spi_wait ( struct efab_nic *efab ) {
*
*/
static int falcon_spi_read ( struct efab_nic *efab,
struct efab_spi_device *spi,
int address, void *data, unsigned int len ) {
struct efab_spi_device *spi, int address,
void *data, unsigned int len ) {
efab_oword_t reg;
/* Program address register */
@@ -2250,7 +2258,7 @@ static int falcon_spi_read ( struct efab_nic *efab,
FCN_EE_SPI_HCMD_READ, FCN_EE_SPI_READ,
FCN_EE_SPI_HCMD_DUBCNT, 0,
FCN_EE_SPI_HCMD_ADBCNT, spi->addr_len,
FCN_EE_SPI_HCMD_ENC, spi->read_command );
FCN_EE_SPI_HCMD_ENC, SPI_READ_CMD );
falcon_write ( efab, &reg, FCN_EE_SPI_HCMD_REG_KER );
/* Wait for read to complete */
@@ -2264,24 +2272,61 @@ static int falcon_spi_read ( struct efab_nic *efab,
return 1;
}
#define SPI_READ_CMD 0x03
/**
* Perform SPI write
*
*/
static int falcon_spi_write ( struct efab_nic *efab,
struct efab_spi_device *spi, int address,
const void *data, unsigned int len ) {
efab_oword_t reg;
/* Program address register */
EFAB_POPULATE_OWORD_1 ( reg, FCN_EE_SPI_HADR_ADR, address );
falcon_write ( efab, &reg, FCN_EE_SPI_HADR_REG_KER );
/* Program data register */
memcpy ( &reg, data, len );
falcon_write ( efab, &reg, FCN_EE_SPI_HDATA_REG_KER );
/* Issue write command */
EFAB_POPULATE_OWORD_7 ( reg,
FCN_EE_SPI_HCMD_CMD_EN, 1,
FCN_EE_SPI_HCMD_SF_SEL, spi->device_id,
FCN_EE_SPI_HCMD_DABCNT, len,
FCN_EE_SPI_HCMD_READ, FCN_EE_SPI_WRITE,
FCN_EE_SPI_HCMD_DUBCNT, 0,
FCN_EE_SPI_HCMD_ADBCNT, spi->addr_len,
FCN_EE_SPI_HCMD_ENC, SPI_WRITE_CMD );
falcon_write ( efab, &reg, FCN_EE_SPI_HCMD_REG_KER );
/* Wait for read to complete */
if ( ! falcon_spi_wait ( efab ) )
return 0;
return 1;
}
#define AT25F1024_ADDR_LEN 3
#define AT25F1024_READ_CMD SPI_READ_CMD
#define AT25040_ADDR_LEN 1
#define MC25XX640_ADDR_LEN 2
#define MC25XX640_READ_CMD SPI_READ_CMD
/** Falcon Flash SPI device */
static struct efab_spi_device falcon_spi_flash = {
.device_id = FCN_EE_SPI_FLASH,
.addr_len = AT25F1024_ADDR_LEN,
.read_command = AT25F1024_READ_CMD,
};
/** Falcon EEPROM SPI device */
static struct efab_spi_device falcon_spi_large_eeprom = {
.device_id = FCN_EE_SPI_EEPROM,
.addr_len = MC25XX640_ADDR_LEN,
.read_command = MC25XX640_READ_CMD,
};
/** Falcon EEPROM SPI device */
static struct efab_spi_device falcon_spi_small_eeprom = {
.device_id = FCN_EE_SPI_EEPROM,
.addr_len = AT25040_ADDR_LEN,
};
/** Offset of MAC address within EEPROM or Flash */
@@ -2301,6 +2346,49 @@ static int falcon_read_eeprom ( struct efab_nic *efab ) {
efab->mac_addr, sizeof ( efab->mac_addr ) );
}
#define FALCON_NVS_OFFSET 0x000
static int falcon_read_nvs ( struct nvs_device *nvs, unsigned int offset,
void *data, size_t len ) {
struct efab_nic *efab = container_of ( nvs, struct efab_nic, nvs );
struct efab_spi_device *spi = &falcon_spi_small_eeprom;
while ( len ) {
if ( ! falcon_spi_read ( efab, spi,
( offset + FALCON_NVS_OFFSET ),
data, 16 ) ) {
return -EIO;
}
data += 16;
offset += 16;
len -=16;
}
return 0;
}
static int falcon_write_nvs ( struct nvs_device *nvs, unsigned int offset,
const void *data, size_t len ) {
struct efab_nic *efab = container_of ( nvs, struct efab_nic, nvs );
struct efab_spi_device *spi = &falcon_spi_large_eeprom;
while ( len ) {
if ( ! falcon_spi_write ( efab, spi,
( offset + FALCON_NVS_OFFSET ),
data, 16 ) ) {
return -EIO;
}
data += 16;
offset += 16;
len -=16;
}
return 0;
}
static struct nvs_operations falcon_nvs_operations = {
.read = falcon_read_nvs,
.write = falcon_write_nvs,
};
/** RX descriptor */
typedef efab_qword_t falcon_rx_desc_t;
@@ -2952,6 +3040,14 @@ static int falcon_init_nic ( struct efab_nic *efab ) {
falcon_write ( efab, &reg, FCN_INT_ADR_REG_KER );
udelay ( 1000 );
/* Register non-volatile storage */
if ( efab->has_eeprom ) {
efab->nvs.op = &falcon_nvs_operations;
efab->nvs.len = 0x100;
if ( nvs_register ( &efab->nvs ) != 0 )
return 0;
}
return 1;
}
@@ -3303,7 +3399,7 @@ PROBE - Look for an adapter, this routine's visible to the outside
***************************************************************************/
static int etherfabric_probe ( struct nic *nic, struct pci_device *pci ) {
static struct efab_nic efab;
static int nic_port = 1;
static int nic_port = 0;
struct efab_buffers *buffers;
int i;