forked from Minki/linux
sfc: Clean up non-volatile memory partitioning
Move flash and EEPROM partition boundary constants into spi.h and rename them to be consistent. Add a comment on the partitioning. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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@ -172,10 +172,7 @@ static struct efx_ethtool_stat efx_ethtool_stats[] = {
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/* Number of ethtool statistics */
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#define EFX_ETHTOOL_NUM_STATS ARRAY_SIZE(efx_ethtool_stats)
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/* EEPROM range with gPXE configuration */
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#define EFX_ETHTOOL_EEPROM_MAGIC 0xEFAB
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#define EFX_ETHTOOL_EEPROM_MIN 0x800U
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#define EFX_ETHTOOL_EEPROM_MAX 0x1800U
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/**************************************************************************
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*
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@ -545,8 +542,8 @@ static int efx_ethtool_get_eeprom_len(struct net_device *net_dev)
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if (!spi)
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return 0;
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return min(spi->size, EFX_ETHTOOL_EEPROM_MAX) -
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min(spi->size, EFX_ETHTOOL_EEPROM_MIN);
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return min(spi->size, EFX_EEPROM_BOOTCONFIG_END) -
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min(spi->size, EFX_EEPROM_BOOTCONFIG_START);
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}
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static int efx_ethtool_get_eeprom(struct net_device *net_dev,
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@ -557,7 +554,7 @@ static int efx_ethtool_get_eeprom(struct net_device *net_dev,
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size_t len;
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int rc;
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rc = falcon_spi_read(spi, eeprom->offset + EFX_ETHTOOL_EEPROM_MIN,
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rc = falcon_spi_read(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
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eeprom->len, &len, buf);
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eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC;
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eeprom->len = len;
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@ -575,7 +572,7 @@ static int efx_ethtool_set_eeprom(struct net_device *net_dev,
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if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC)
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return -EINVAL;
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rc = falcon_spi_write(spi, eeprom->offset + EFX_ETHTOOL_EEPROM_MIN,
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rc = falcon_spi_write(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START,
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eeprom->len, &len, buf);
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eeprom->len = len;
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return rc;
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@ -2253,13 +2253,13 @@ int falcon_read_nvram(struct efx_nic *efx, struct falcon_nvconfig *nvconfig_out)
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__le16 *word, *limit;
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u32 csum;
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region = kmalloc(NVCONFIG_END, GFP_KERNEL);
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region = kmalloc(FALCON_NVCONFIG_END, GFP_KERNEL);
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if (!region)
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return -ENOMEM;
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nvconfig = region + NVCONFIG_OFFSET;
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spi = efx->spi_flash ? efx->spi_flash : efx->spi_eeprom;
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rc = falcon_spi_read(spi, 0, NVCONFIG_END, NULL, region);
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rc = falcon_spi_read(spi, 0, FALCON_NVCONFIG_END, NULL, region);
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if (rc) {
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EFX_ERR(efx, "Failed to read %s\n",
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efx->spi_flash ? "flash" : "EEPROM");
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@ -2283,7 +2283,7 @@ int falcon_read_nvram(struct efx_nic *efx, struct falcon_nvconfig *nvconfig_out)
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limit = (__le16 *) (nvconfig + 1);
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} else {
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word = region;
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limit = region + NVCONFIG_END;
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limit = region + FALCON_NVCONFIG_END;
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}
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for (csum = 0; word < limit; ++word)
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csum += le16_to_cpu(*word);
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@ -1150,7 +1150,6 @@ struct falcon_nvconfig_board_v3 {
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(((type) >> EFX_LOW_BIT(field)) & EFX_MASK32(EFX_WIDTH(field)))
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#define NVCONFIG_OFFSET 0x300
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#define NVCONFIG_END 0x400
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#define NVCONFIG_BOARD_MAGIC_NUM 0xFA1C
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struct falcon_nvconfig {
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@ -63,4 +63,21 @@ int falcon_spi_read(const struct efx_spi_device *spi, loff_t start,
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int falcon_spi_write(const struct efx_spi_device *spi, loff_t start,
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size_t len, size_t *retlen, const u8 *buffer);
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/*
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* SFC4000 flash is partitioned into:
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* 0-0x400 chip and board config (see falcon_hwdefs.h)
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* 0x400-0x8000 unused (or may contain VPD if EEPROM not present)
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* 0x8000-end boot code (mapped to PCI expansion ROM)
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* SFC4000 small EEPROM (size < 0x400) is used for VPD only.
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* SFC4000 large EEPROM (size >= 0x400) is partitioned into:
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* 0-0x400 chip and board config
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* configurable VPD
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* 0x800-0x1800 boot config
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* Aside from the chip and board config, all of these are optional and may
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* be absent or truncated depending on the devices used.
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*/
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#define FALCON_NVCONFIG_END 0x400U
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#define EFX_EEPROM_BOOTCONFIG_START 0x800U
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#define EFX_EEPROM_BOOTCONFIG_END 0x1800U
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#endif /* EFX_SPI_H */
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