diff options
| author | Ben Hutchings <bhutchings@solarflare.com> | 2012-02-15 01:58:49 +0000 |
|---|---|---|
| committer | Ben Hutchings <bhutchings@solarflare.com> | 2012-02-16 00:25:12 +0000 |
| commit | 28e47c498a931200125e299e9d60d22e27b4ab0d (patch) | |
| tree | 871e75c4db7e670c2ceaed7b5fd69b9ef9a5f4c4 /drivers/net/ethernet/sfc/net_driver.h | |
| parent | a9a52506277275b73955504bf4df745502a28b8b (diff) | |
sfc: Allocate SRAM between buffer table and descriptor caches at init time
Each port has a block of 64-bit SRAM that is divided between buffer
table and descriptor cache regions at initialisation time. Currently
we use a fixed allocation, but it needs to be changed to support
larger numbers of queues.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Diffstat (limited to 'drivers/net/ethernet/sfc/net_driver.h')
| -rw-r--r-- | drivers/net/ethernet/sfc/net_driver.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h index 94b0dcab897f..7870cefcb203 100644 --- a/drivers/net/ethernet/sfc/net_driver.h +++ b/drivers/net/ethernet/sfc/net_driver.h @@ -658,6 +658,9 @@ struct efx_filter_state; * should be allocated for this NIC * @rxq_entries: Size of receive queues requested by user. * @txq_entries: Size of transmit queues requested by user. + * @tx_dc_base: Base qword address in SRAM of TX queue descriptor caches + * @rx_dc_base: Base qword address in SRAM of RX queue descriptor caches + * @sram_lim_qw: Qword address limit of SRAM * @next_buffer_table: First available buffer table id * @n_channels: Number of channels in use * @n_rx_channels: Number of channels used for RX (= number of RX queues) @@ -753,6 +756,9 @@ struct efx_nic { unsigned rxq_entries; unsigned txq_entries; + unsigned tx_dc_base; + unsigned rx_dc_base; + unsigned sram_lim_qw; unsigned next_buffer_table; unsigned n_channels; unsigned n_rx_channels; @@ -839,6 +845,8 @@ static inline unsigned int efx_port_num(struct efx_nic *efx) * @probe: Probe the controller * @remove: Free resources allocated by probe() * @init: Initialise the controller + * @dimension_resources: Dimension controller resources (buffer table, + * and VIs once the available interrupt resources are clear) * @fini: Shut down the controller * @monitor: Periodic function for polling link state and hardware monitor * @map_reset_reason: Map ethtool reset reason to a reset method @@ -878,8 +886,6 @@ static inline unsigned int efx_port_num(struct efx_nic *efx) * @phys_addr_channels: Number of channels with physically addressed * descriptors * @timer_period_max: Maximum period of interrupt timer (in ticks) - * @tx_dc_base: Base address in SRAM of TX queue descriptor caches - * @rx_dc_base: Base address in SRAM of RX queue descriptor caches * @offload_features: net_device feature flags for protocol offload * features implemented in hardware */ @@ -887,6 +893,7 @@ struct efx_nic_type { int (*probe)(struct efx_nic *efx); void (*remove)(struct efx_nic *efx); int (*init)(struct efx_nic *efx); + void (*dimension_resources)(struct efx_nic *efx); void (*fini)(struct efx_nic *efx); void (*monitor)(struct efx_nic *efx); enum reset_type (*map_reset_reason)(enum reset_type reason); @@ -923,8 +930,6 @@ struct efx_nic_type { unsigned int max_interrupt_mode; unsigned int phys_addr_channels; unsigned int timer_period_max; - unsigned int tx_dc_base; - unsigned int rx_dc_base; netdev_features_t offload_features; }; |