diff options
Diffstat (limited to 'net/mac802154/main.c')
| -rw-r--r-- | net/mac802154/main.c | 54 |
1 files changed, 50 insertions, 4 deletions
diff --git a/net/mac802154/main.c b/net/mac802154/main.c index 520cedc594e1..bd7bdb1219dd 100644 --- a/net/mac802154/main.c +++ b/net/mac802154/main.c @@ -113,6 +113,50 @@ ieee802154_alloc_hw(size_t priv_data_len, const struct ieee802154_ops *ops) } EXPORT_SYMBOL(ieee802154_alloc_hw); +void ieee802154_configure_durations(struct wpan_phy *phy) +{ + u32 duration = 0; + + switch (phy->current_page) { + case 0: + if (BIT(phy->current_channel) & 0x1) + /* 868 MHz BPSK 802.15.4-2003: 20 ksym/s */ + duration = 50 * NSEC_PER_USEC; + else if (BIT(phy->current_channel) & 0x7FE) + /* 915 MHz BPSK 802.15.4-2003: 40 ksym/s */ + duration = 25 * NSEC_PER_USEC; + else if (BIT(phy->current_channel) & 0x7FFF800) + /* 2400 MHz O-QPSK 802.15.4-2006: 62.5 ksym/s */ + duration = 16 * NSEC_PER_USEC; + break; + case 2: + if (BIT(phy->current_channel) & 0x1) + /* 868 MHz O-QPSK 802.15.4-2006: 25 ksym/s */ + duration = 40 * NSEC_PER_USEC; + else if (BIT(phy->current_channel) & 0x7FE) + /* 915 MHz O-QPSK 802.15.4-2006: 62.5 ksym/s */ + duration = 16 * NSEC_PER_USEC; + break; + case 3: + if (BIT(phy->current_channel) & 0x3FFF) + /* 2.4 GHz CSS 802.15.4a-2007: 1/6 Msym/s */ + duration = 6 * NSEC_PER_USEC; + break; + default: + break; + } + + if (!duration) { + pr_debug("Unknown PHY symbol duration\n"); + return; + } + + phy->symbol_duration = duration; + phy->lifs_period = (IEEE802154_LIFS_PERIOD * phy->symbol_duration) / NSEC_PER_SEC; + phy->sifs_period = (IEEE802154_SIFS_PERIOD * phy->symbol_duration) / NSEC_PER_SEC; +} +EXPORT_SYMBOL(ieee802154_configure_durations); + void ieee802154_free_hw(struct ieee802154_hw *hw) { struct ieee802154_local *local = hw_to_local(hw); @@ -131,10 +175,10 @@ static void ieee802154_setup_wpan_phy_pib(struct wpan_phy *wpan_phy) * Should be done when all drivers sets this value. */ - wpan_phy->lifs_period = IEEE802154_LIFS_PERIOD * - wpan_phy->symbol_duration; - wpan_phy->sifs_period = IEEE802154_SIFS_PERIOD * - wpan_phy->symbol_duration; + wpan_phy->lifs_period = + (IEEE802154_LIFS_PERIOD * wpan_phy->symbol_duration) / 1000; + wpan_phy->sifs_period = + (IEEE802154_SIFS_PERIOD * wpan_phy->symbol_duration) / 1000; } int ieee802154_register_hw(struct ieee802154_hw *hw) @@ -157,6 +201,8 @@ int ieee802154_register_hw(struct ieee802154_hw *hw) ieee802154_setup_wpan_phy_pib(local->phy); + ieee802154_configure_durations(local->phy); + if (!(hw->flags & IEEE802154_HW_CSMA_PARAMS)) { local->phy->supported.min_csma_backoffs = 4; local->phy->supported.max_csma_backoffs = 4; |